• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Bayonet pressure cooker and method of manufacturing the same. The invention relates to an apparatus (1) for cooking food under pressure comprising at least: - a tank (2) and a lid (3) to be locked relative to the tank (2) to form with it a chamber cooking device adapted to increase pressure, - bayonet locking means forming first and second series of excrescences (5A - 5J, 6A - 6J) which are secured respectively to the cover of the cover (3) and the shell of the tank (2) and which are intended to cooperate together to ensure the locking of the lid (3) relative to the tank (2), said apparatus (1) being characterized in that each outgrowth (5A - 5J) of at least one of said series is adjacent to a respective opening (7A - 7J) formed through the corresponding envelope. Pressure cookers.
    公开号:FR3033993A1
    申请号:FR1552579
    申请日:2015-03-26
    公开日:2016-09-30
    发明作者:Eric Chameroy；Hubert Chaillard
    申请人:SEB SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the general technical field of apparatus for cooking food under pressure, and in particular to household appliances of the pressure-cooker type intended to form a cooking chamber capable of mounting in pressure. to ensure the cooking under pressure of steam food contained within it. The present invention more particularly relates to an apparatus for cooking food under pressure comprising at least: - a tank and a lid to be locked relative to the tank to form therewith a cooking chamber adapted to increase pressure, 10 - Bayonet locking means forming first and second series of excrescences which are secured respectively to the casing of the lid and the casing of the tank and which are intended to cooperate together to ensure the locking of the lid relative to the tank . The present invention also relates to a method of manufacturing a pressurized food cooking appliance comprising at least: a bowl and a lid intended to be locked relative to the bowl in order to form therewith a cooking chamber able to pressurized, - bayonet locking means forming first and second series of excrescences which are secured respectively to the envelope of the lid and the casing of the tank and which are intended to cooperate together to ensure the locking lid relative to the tank. Appliances for cooking food under pressure, especially for domestic use, are well known. They generally comprise a metal tank on which is intended to be reported sealingly, via a flexible seal ring seal, also a metal cover, so as to constitute a cooking chamber capable of mounting pressure.
    [0002] The lid is intended to be connected to the tank by means of locking means allowing the pressure cooker to move between a locking configuration of the lid relative to the tank, in which the cooking chamber is capable of pressurizing, and an unlocking configuration in which the lid can be freely separated from the tank. There are different types of locking means well known in the prior art. One of the most common systems is the bayonet locking system, which is based on the implementation of tank and cover ramps intended to come into sliding mutual support after rotation of the lid to thereby provide a mechanical restraining link preventing the separation of the tank and the lid under the effect of the rise in pressure. The cover ramps are conventionally made by refolding inwardly of the annular falling edge of the lid, while the tank ramps are obtained by folding and cutting the free upper edge of the tank. Such a bayonet locking system gives overall satisfaction, but nonetheless presents some disadvantages. In particular, it may be difficult for the users to correctly position the lid relative to the tank, particularly because the position of the cover ramps is difficult to determine, especially for an unsophisticated user. In the same way, it may be difficult for users of these known bayonet pressure cookers to ensure the proper engagement of tank and lid ramps. In addition, by their very design, the tank and lid ramps have a resistance to deformation, and in particular to bending, which is far from optimal. This requires the use of ramps of considerable thickness that extend along the perimeter of the tank (respectively along the perimeter of the cover) in relatively long lengths, so as to ensure a connection of the tank ramps and 3033993 3 lid that can meet the particularly demanding standards and specifications for domestic pressure cookers. In particular, certain standards provide that a bayonet pressure cooker locking mechanism must withstand a test pressure of 500 kPa without separating the tank and lid. The conventional bayonet locking systems used in known pressure cookers are therefore based on the use of long cover and tank ramps, which gives the pressure cooker an aesthetic character that is not very rewarding, particularly because of the relatively unstructured appearance of the tank rim, in which are provided notches (allowing the engagement of cover ramps) which extend over at least half of the perimeter of the vessel rim. The bayonet locking systems used in the known pressure cookers therefore necessarily induce conformations and sizing of the tank and lid edges which are very specific, which in particular limit the possibilities of accessorizing the pressure cookers concerned and affect them. significantly the overall appearance. In addition, because of the length: relatively large tank and lid ramps, it is necessary to rotate the lid relative to the tank in a relatively large angular stroke to fully align all the cover ramps with all ramps corresponding tank and thus to obtain an efficient and safe locking. This large angular stroke can also be difficult to perform because of the friction between the tank and lid ramps (and the seal) it implies. Ultimately, known bayonet pressure cooker locking systems are absolutely not optimized especially with regard to their mechanical behavior (mechanical strength and resistance to deformation), their weight, their aesthetics, their ergonomics and their reliability. ease of use. With regard specifically to this last point (ease of use), it turns out that the capacity of known bayonet locking mechanisms to suggest in a natural and intuitive way their own use (capacity generally called "affordance") is far from to be optimal. The invention therefore proposes to remedy the various disadvantages set out above and to propose a new pressurized cooking appliance whose locking means is particularly efficient, especially in terms of ease of use and resistance to deformation, while being light, safe, easy to handle and having good affordance properties as well as improved aesthetics. Another object of the invention is to provide a novel pressure cooker provided with locking means which can be manufactured simply and at a lower cost, while being particularly robust and reliable. Another object of the invention is to propose a new pressure cooking appliance which provides a high level of safety of use. Another object of the invention is to provide a new pressure cooker whose locking means can be manufactured by means of industrial equipment 15 whose operation is based on well known and proven principles. Another object of the invention is to propose a new pressure cooker whose design facilitates the proper positioning of the lid relative to the tank. Another object of the invention is to provide a new pressure cooker whose design allows the user to easily and intuitively ensure correct locking of the lid relative to the tank. Another object of the invention is to propose a new method of manufacturing a pressure cooker that relies on particularly simple and economical steps, while allowing to obtain a cooking appliance with extremely effective locking means. and sure.
    [0003] Another object of the invention is to provide a novel method of manufacturing a pressure cooker which can be implemented by means of simple and economical industrial tools. The objects of the invention are achieved with the aid of a pressure food cooking appliance comprising at least: a bowl and a lid intended to be locked relative to the bowl so as to form therewith an enclosure for cooking capable of mounting in pressure, bayonet locking means forming first and second series of excrescences which are secured respectively to the cover of the lid and the casing of the tank and which are intended to cooperate together for locking the lid relative to the tank, said apparatus being characterized in that each outgrowth of at least one of said series is adjacent to a respective opening formed through the corresponding envelope.
    [0004] The objects intended for the invention are also achieved by means of a method of manufacturing a pressurized food cooking appliance comprising at least: a bowl and a lid intended to be locked relative to the bowl; to form with the latter a cooking chamber capable of mounting in pressure, - bayonet locking means forming first and second series of excrescences 20 which are secured respectively to the cover of the lid and the casing of the tank and which are intended to cooperate together to ensure the locking of the lid relative to the tank, said method being characterized in that it comprises: - a step of producing, through at least one of said envelopes, a plurality openings, and a step of forming a plurality of protuberances each adjacent to a respective opening of said plurality of apertures, said plurality of excrescences 3033993 6 issances forming at least one of said first and second series of excrescences. Other features and advantages of the invention will become apparent and will appear in more detail on reading the description given below, with reference to the accompanying drawings, given by way of purely illustrative and non-limiting example, in which: Figure 1 illustrates, in a schematic perspective view, a first embodiment of a pressure food cooking apparatus according to the invention, with the lid separated from the tank. - Figure 2 illustrates, in a schematic perspective view, the apparatus of Figure 1 10 with the lid attached and locked on the vessel. FIG. 3 illustrates, in a partial sectional view, the lid of the apparatus of FIGS. 1 and 2. FIG. 4 illustrates, in another sectional view, the lid of FIG. 3. FIG. according to a schematic perspective view partially from below, the apparatus of Figures 1 and 2 while the cover is attached to the tank, against the free upper edge of the latter, in a locking waiting configuration. - Figure 6 illustrates, in an incomplete schematic view in perspective partially from below, the apparatus of Figure 6 while the cover is attached and locked on the vessel. FIGS. 7 and 8 are diagrammatic views in section, along two respective section planes, of a detail of embodiment of the pressure cooker of FIG. 6.
    [0005] FIG. 9 illustrates, in a diagrammatic sectional view, the manner in which the seal is positioned within a pressure cooker according to the invention, the lid of which is locked on the tank. - Figure 10 is a partial sectional view also illustrating the positioning of the seal in the unlocked lid of a pressure cooker according to the invention. FIG. 11 schematically illustrates, in front view, an example of a lid ramp conformation, corresponding to the conformation implemented in the pressure cooker of FIGS. 1 to 10.
    [0006] FIGS. 12 and 13 schematically illustrate, in front view, alternative configurations of cover ramps that can be implemented instead, or in association with, the ramps of FIG. 11. FIG. according to a view from below, an apparatus similar to that of the preceding figures (except that its locking means include eight cover and tank protrusions and not ten as in the variants of the preceding figures), in the unlocking configuration. - Figure 15 illustrates, in a view from below, the apparatus of Figure 14 in the locking configuration. FIG. 16 illustrates, in a view from below, the pressure cooker of FIGS. 14 and 15 with the lid attached to the tank in an incorrect configuration which does not allow locking. - Figure 17 illustrates, in a general view, a cooking apparatus according to a second embodiment of the invention, the lid is locked on the tank. FIG. 18 is an enlarged view of a detail of FIG. 17. FIG. 19 illustrates the pressure cooker of FIGS. 17 and 18 with the lid unlocked and placed freely on the tank. - Figure 20 illustrates, in a partial view from below in perspective, the lid of a pressure cooker according to a third embodiment of the invention. FIG. 21 illustrates, in a partial top view in perspective, the lid of FIG. 20. FIG. 22 illustrates, in a partial view from below in perspective, the lid of a pressure cooker conforming to a fourth embodiment of FIG. embodiment of the invention. - Figure 23 illustrates, in a partial view from below in perspective, the lid 10 of a pressure cooker according to a fifth embodiment of the invention. As illustrated in the figures, the invention relates to a device 1 for cooking food under pressure, intended to ensure the cooking of different foods at a pressure level higher than atmospheric pressure, in the presence of steam, and for example steam. 'water. Said steam is generated by heating, in the apparatus 1 and in the presence of food, a cooking liquid, for example an aqueous liquid. The apparatus 1 according to the invention is preferably intended for domestic use, it being understood however that the invention may also relate to professional or semiprofessional apparatus. The apparatus 1 according to the invention is designed for mounting pressure exclusively under the effect of a heating source (onboard or external), without external pressure. The apparatus 1 for cooking food under pressure is therefore a pressure cooker, preferably intended to be arranged on an independent cooking plate to heat the contents. The cooking apparatus 1 according to the invention comprises at least one bowl 2 forming a cooking vessel, intended to accommodate the food to be cooked and presenting in this case substantially a symmetry of revolution along a central axis X-X ', which extends in a direction that is similar to the vertical direction when the apparatus 1 is in normal operation, that is to say rests on a horizontal plane. The vessel 2 is conventionally fabricated from a metallic material such as stainless steel or aluminum, or any other suitable material, coated (for example with a layer of ceramic, PTFE, enamel, lacquer. ..) or not. The tank 2 comprises a bottom 2A, which is for example a multilayer heat-conductive bottom secured to the rest of the tank 2 by any suitable technique (for example hot stamping). The vessel 2 also comprises an annular side wall 2B which rises between said bottom 2A and a free upper edge 10C, which is in this case circular in shape, and which delimits an access opening inside the tank 2. The conformation of this free upper edge 2C will be described in greater detail in the following, in relation to the locking means of the device 1. The tank 2 may also comprise gripping members, such as handles of 2D vessel, 2E (see Figures 17 to 19), preferably two in number, and 15 fixed for example on the side wall 2B of the vessel 2 diametrically opposite with respect to the central axis X-X '. The apparatus 1 according to the invention also comprises a lid 3 intended to be associated with the tank 2, to form with it a cooking chamber. More specifically, the lid 3 is intended to be locked relative to the tank 2 to form therewith a cooking chamber adapted to be mounted in pressure, that is to say a cooking chamber sufficiently hermetic to allow the rise in In order to obtain this hermetic, watertight character, the apparatus 1 advantageously includes a seal, such as a flexible annular seal 4, of elastomer for example, intended to be interposed between the lid 3 and the tank 2, to thereby prevent uncontrolled leakage of steam and / or air between the inside of the enclosure and the outside. The lid 3 is conventionally made of a metallic material such as stainless steel or aluminum, or any other suitable material, coated (for example with a layer of ceramic, PTFE, enamel, lacquer, etc.). .) or not. It advantageously has a shape conjugate to that of the vessel 2, for example a generally discoid shape, which advantageously extends in a mean plane substantially parallel to the mean plane of extension of the bottom 2A of the vessel 2 (this is ie a substantially horizontal plane in this case) when it is attached and locked on the latter. In the embodiments illustrated in the figures, the envelope of the cover 3 includes a discoid cover element 3A of shape and dimensions conjugated to those of the access opening delimited by the free upper edge 2C of the annular lateral wall 2B 2. In the embodiments illustrated in the figures, the envelope of the lid 3 also includes an annular belt 3B, for example of substantially cylindrical or frustoconical shape, which rises between a first circular edge 30B integral with the discoid cover element 3A (in this case at the periphery of the latter) and a second free circular edge 31B, which is for example itself extended by a flange 32B (absent the variants illustrated in FIGS. and 17 to 19). As illustrated in the figures, the discoidal covering element 3A extends generally along a horizontal mean plane, that is to say in this case parallel to the mean extension plane of the bottom 2A of the tank 2 when the lid 3 is associated with the tank 2 to form the cooking chamber, while the annular belt 3B extends substantially vertically, that is to say parallel to the central axis X-X ', the flange 32B terminal extending in turn substantially horizontally. This of course does not exclude that the discoid cover member 3A may be, as shown in the figures, slightly domed or curved locally, as is well known as such. In the embodiments illustrated in the figures, the annular belt 3B is formed by a falling edge which extends downwardly from the periphery of the discoid cover member 3A. In these embodiments, the lid 3 is intended to cap substantially the top of the tank 2 in such a manner that the annular belt 3B surrounds the top of the annular side wall 2B and the upper edge from outside. free 2C. However, it is quite possible that the annular belt 3B is rather intended to be inserted into the vessel 2, so as to be surrounded by and contained in the vessel 2 without leaving the frame of the invention.
    [0007] The apparatus 1 for cooking food under pressure according to the invention advantageously comprises a pressure regulating means (not shown), such as for example a valve, preferably mounted on the cover 3 and arranged to maintain the pressure. pressure prevailing in the cooking chamber at a substantially constant predetermined value, said operating pressure, which exceeds the atmospheric pressure by a value which is for example between substantially 10 and 120 kPa, and which is preferably from order of 100 kPa. The general operating principle of such a pressure regulating means is well known as such, so there is no need to further describe it here.
    [0008] The appliance 1 for cooking food under pressure may comprise other operating members (for example a pressure sensitive safety pin, a safety valve at the overpressure, etc.) which are not illustrated in FIGS. , which represent only "bare" lids for the sake of simplicity and brevity of description. FIGS. 1 and 2 in particular make it possible to visualize various orifices formed through the lid 3 and intended to put the interior of the cooking chamber in communication with the various operating members (operating valve, safety valve, finger security ...) intended to be mounted on the cover. The vessel 2 and the lid 3 thus constitute complementary, preferably metallic, envelopes which, once associated, form a resulting metal shell 20 delimiting a closed volume within which the food is intended to cook under steam pressure. The apparatus 1 according to the invention also comprises means for locking the lid 3 relative to the bowl 2, in order to allow the cooking chamber formed by the combination of the lid 3 and the bowl 2 to reach the less operating pressure without risk of the lid 3 escape under the effect of the pressure prevailing within the enclosure. By "locking means" is meant here means designed to ensure a mechanical connection between the tank 2 and the lid 3 which is sufficiently robust to prevent the lid 3 from separating from the tank 2 under the effect of the increase in pressure within the cooking chamber.
    [0009] According to the invention, said locking means are bayonet locking means, that is to say locking means for attaching the lid 3 to the tank 2 by relative rotation of the lid 3 and the tank 2, preferably along the central axis X-X ', to thus pass the lid 3 of a locking waiting configuration 5, in which the lid is attached to the tank 2 and rests freely on the latter , to a locking configuration in which the tank 2 and the lid 3 interact to prevent their free separation. The bayonet locking means of the cooking apparatus 1 form for this purpose a first series of protuberances 5A-5J and a second series of protuberances 6A-6J which are secured respectively to the envelope of the lid 3 and the envelope of the tank 2, and which are intended to cooperate together to ensure the locking of the lid 3 relative to the tank 2. As is well known as such, the growths 5A-5J, 6A-6J of each series cooperate in pairs, that is to say that each outgrowth of one of said series is brought, by rotation of the lid 3 relative to the tank 2, to pass 15 under a corresponding protrusion of the other series. This mechanical cooperation of the protuberances 5A-5J, 6A-6J of each series thus makes an interlocking which prevents any inadvertent separation of the lid 3 and the tank 2, since in response to a separation effort of the lid 3 and the tank 2 exerting in the vertical direction (materialized by the central axis X-X '), the superimpositions superimposed two by two come 20 mutual support blocking. In the embodiments illustrated in the figures, the protuberances 5A-5J of the first series (integral with the cover of the cover 3) project radially towards the inside of the cover 3, while the protuberances 6A-6J of the second series (integral with the casing of the tank 2) protrude radially from the casing of the vessel 2 towards the outside thereof. However, it is perfectly conceivable, according to an alternative embodiment not illustrated, that the protuberances 5A-5D of the first series protrude outwardly of the cover 3 and that the protuberances 6A-6D of the second series protrude, from said shell of the tank 2, towards the center of the latter. The invention is therefore not limited to a particular configuration of the locking ramps, the essential fact being that protrusions of the cover 5A-5J and of the tank 6A-6J, 3033993 13 respectively forming lid and tank ramps, cooperate together by relative rotation of the tank 2 of the lid 3, in this case along the axis X-X ', so that the lid ramps are positioned under (or possibly on) the tank ramps to achieve a mechanical connection between the tank 2 and the lid 3 capable of withstanding the internal pressure prevailing in the cooking chamber. According to the invention, each protrusion 5A-5J of at least one of said series of excrescences is adjacent to a respective opening 7A-7J formed through the corresponding envelope (i.e. the envelope of which the excrescences of the series concerned are solidary). As illustrated in the figures, the opening is a through opening formed through the entire thickness of the envelope concerned. By "adjacent" is meant here that each outgrowth 5A-5J is in the immediate vicinity of the respective opening 7A-7J, and comes for example border and / or partially delimit said opening 7A-7J. In the embodiments illustrated in the figures, the protuberances 5A-5J adjacent to the respective openings 7A-7J form the protuberances 5A-5J of the first series integral with the cover of the cover 3. As will be described in more detail in this embodiment. following, each outgrowth 5A-5J of the first series of excrescences is, in the examples illustrated in the figures, constituted by a locally deformed portion of the envelope of the cover 3, forming in this case a volume element which protrudes Radially inwardly of the cover 3, while the protuberances 6A-6J of the second series of excrescences are for example (as described in more detail in the following) in the form of radially extending metal tongues. from the free upper edge 2C of the tank 2, in this case towards the outside of the tank 2. It is of course alternatively possible that the protuberances 5A-5D integral with the Veloppe lid 3 are formed by flat or volume elements which protrude outwardly of the lid, and that the protuberances 6A-6D integral with the tank 2 are constituted by flat or volume elements which protrude towards the 2. The invention therefore relates to all possible combinations of growths (flat / volume, projecting internally / externally), insofar as at least one of the series 3033993 14 excrescences is associated to a plurality of corresponding openings 7A-7J as previously described Advantageously, and as illustrated in the figures, the protuberances 6A-6J of the second series are formed by an annular flange 60 which protrudes outwardly from the upper free edge 5 2C, notches 61A-61J passing said protuberances 5A-5J of the first series being formed through said annular flange 60, so that the portions of said annular flange 60 extending between each notch 61A-61J form tank ramps intended to cooperate with the protuberances 5A-5J of the first series integral with the cover casing 3. The annular flange 60 is thus advantageously in the form of a ring substantially flat, which extends substantially horizontally or at a slight inclination downwards, and through which are formed, for example by cutting the material forming the annular flange 60, the notches 61A-61J which allow the passage of the protuberances 5A -5J of cover. The notches 61A-61J advantageously have a rounded profile, 15 conjugated to that of the protrusions 5A-5J cover. Thus, when the cover 3 comes to cap the tank 2, the protuberances 5A-5J which project from the annular belt 3B can pass through the notches 61A-61J to find themselves positioned lower than the annular rim 60. The cover 3 is located then in a pre-lock configuration, from which the locking configuration can be reached by simply rotating the lid 3 relative to the bowl 2 along the vertical axis X-X ', which has the effect of angularly shifting the protuberances 5A-5J of the cover 3 and the notches 61A-61J of the annular flange 60, thus achieving a "bayonet" type locking. Preferably, as is apparent from FIGS. 1, 7 and 8, the annular flange 60 includes a flange which extends substantially radially and outwardly from said free upper edge 2C, as well as a skirt 600 which substantially extends downwards between an upper edge 600A secured to the flange and a free lower edge 600B against which the projections 5A-5J of the first series (forming in this case the cover ramps 3) are intended to bear to lock the lid 3 relative to the tank 2. This embodiment is particularly advantageous from the mechanical point of view, since it makes it possible to give the tank ramp a particularly high quadratic moment in the vertical direction X-X ', thus leading to obtaining a particularly stable and robust mechanical connection between the tank 2 and the lid 3. Preferably, the skirt 600 is discontinuous, and is not present at 61A-61J notches, although it is quite possible, alternatively, that the skirt 600 extends continuously over the entire perimeter of the annular rim 60, notches 61A-61J inclusive, without, as far as it is outside the scope of the invention. Preferably, as illustrated in the figures, said openings 7A-7J are located on said annular belt 3A, at a distance from said first and second circular edges 30B, 31B, so that each opening 7A-7J is substantially continuously lined on its entire perimeter by the material forming the belt 3B. The edge delimiting each opening 7A-7J is therefore advantageously a closed edge on itself, unlike for example the edge open on the outside of a single notch. Each of said openings 7A-7J is thus formed through the thickness of the annular belt 3B of the cover 3, and 15 in this case forms a through window obtained by removal of material. Thus, each protrusion 5A-5J is associated with a respective opening 7A-7J which is formed through the corresponding envelope (that is to say in this case the envelope of the lid 3, and more precisely the annular belt 3B) and which is delimited by at least one edge 70A-70J, and preferably by at least two opposite edges (for example a first longitudinal edge 70A-70J and a second longitudinal edge 71A-71J). Preferably, said edge 70A-70J also contributes to defining said outgrowth 5A-5J adjacent to said opening 7A-7J. In other words, said edge 70A-70J is advantageously common to the opening 7A-7J and the corresponding protrusion 5A-5J, that is to say, it contributes to border said opening 7A-7J and the associated growth 5A-5J. Preferably, said edge 70A-70J of said opening 7A-7J forms a bearing face against which is intended to bear one protrusion 6A-6J of the other series.
    [0010] Preferably, said protuberance 5A-5J adjacent to the opening 7A-7J is formed by a deformed portion of the corresponding envelope (in this case the envelope of the cover 3, and more precisely the annular belt 3B), said deformed portion being for example obtained by stamping the corresponding envelope. In other words, the localized radial deformation of the envelope forming said deformed portion is obtained by localized plastic deformation of the material forming said envelope. The use of stamping makes it possible to obtain, in a particularly simple, rapid and inexpensive manner, a deformed portion that is particularly rigid and robust, having in particular excellent properties of resistance to bending in the vertical direction.
    [0011] Said edge 70A-70J is advantageously part of said deformed portion. This means that the deformed envelope portion forming the relevant protrusion 5A-5J is positioned relative to said respective opening 7A-7J so that at least a portion of said edge 70A-70J (in this case the first longitudinal edge mentioned above). , which corresponds to the lower edge in the variants illustrated in FIGS. 1 to 19) is deformed radially (for example during the aforementioned stamping operation) to present a curved profile and thus form part of the protrusion 5A -5J corresponding. In the embodiments illustrated in FIGS. 1 to 16, said localized radial deformation consists in pushing the lower edge 70A-70J of the opening 7A-7J towards the center of the cover 3, so as to thus pass the edge 70A-70J of an initial profile (before radial deformation) which follows the curvature of the envelope of the cover 3 (that is to say in this case the curvature of the annular belt 3B), to a curved profile which advantageously inscribed in a substantially horizontal plane, that is to say perpendicular to the central axis X-X '. In the examples of FIGS. 1 to 16, said edge 70A-70J of the opening 7A-7J forms the apex of the corresponding outgrowth 5A-5J, and even more preferably forms a bearing face against which is intended to come support a protrusion of the other series (in this case a corresponding tank ramp). In other words, said curved profile edge 70A-70J is intended to slide under the tank ramps 2 in order to lock the lid 3 relative to the tank 2. Preferably, in accordance with the embodiment of FIGS. at 16, only the lower edge 70A-70J of the opening 7A-7J is deformed radially to present a curved profile, the opposite upper edge 71A-71J being not substantially deformed and therefore remaining inscribed in the continuity of the corresponding envelope (in this case the envelope of the cover 3, and more precisely the annular belt 3B). However, it is quite conceivable, as in the embodiment of FIGS. 17 to 19, that the localized radial deformation intended to form the protuberance 5A-5J is practiced so as to deform radially and in a manner similar to both the lower edge 70A and the upper edge 71A of the opening 7A-7J. In this embodiment of FIGS. 17 to 19, the protuberances 6A-6J forming the locking ramps of the tank 2 will thus be inserted into the opening between the lower edges 70A and the upper edges 71A of the latter (see FIG. 19), the deformed lower edge 70A abutting against the corresponding protrusion 6A to prevent the separation of the lid 3 and the bowl 2. The use of an opening edge 70A-70J radially deformed to form the mechanically active face Locking protrusions are particularly advantageous because they make it possible to obtain extremely rigid and flexural resistant growths with a high quadratic moment relative to the vertical direction represented by the central axis X-X '. Preferably, the orthogonal projection of each aperture 7A-7J on a radial plane is in the form of a substantially straight or curved elongated slot which extends longitudinally in a generally horizontal direction.
    [0012] Each opening 7A-7J is for example (variants of FIGS. 1 to 19), prior to the radial deformation of the edge 70A-70J, in the form of a substantially straight or curved elongated slot which fits substantially in a plane. of average extension perpendicular to the vertical central axis X-X '. Preferably, each opening 7A-7J is made by localized material removal, for example by cutting, from the corresponding envelope of the lid 3 and / or the tank 2. In the embodiments illustrated in FIGS. 1 to 19, each opening 7A-7J is thus directly cut in the annular belt 3B. Advantageously, the edge 70A-70J is formed by a central portion 700A (see FIGS. 11 to 13) framed on either side by two end portions 701A, 702A, only said central portion being deformed radially to present a curved profile. and thus become part of the protrusion 5A-5J 3033993 18 adjacent to the opening 7A-7J, said end portions 701A, 702A not being part of said protrusion 5A-5J. In the examples of FIGS. 11 to 13, the end portions 701A, 702A thus follow the curvature of the annular belt 3B, so as to be part of the continuity of this latter, unlike the central portion 700A that protrudes , in this case towards the center of the lid 3, of the annular belt 3B, to form a kind of gusset whose free upper edge is intended to bear against the tank ramps to ensure the locking of the cover 3 relative to the In other words, the radial deformation intended to form the protuberance 5A-5J is not practiced over the entire length of the edge 70A-70J, but only on a central portion of the latter (which forms preferably the bulk of said edge 70A-70J), to avoid uncontrolled tearing of material towards the ends of the edge 70A-70J under the effect of the deformation force (for example by stamping) exerted on the material forming the envelope for form the outgrowth 5A-5J. Preferably, and as illustrated in particular by the variants of FIGS. 1 to 19 and 23, said protrusion 5A-5J adjacent to said opening 7A-7J is formed by a volume element, ie a three-dimensional element which has a substantially non-planar surface, curved, for example left. Such a volume element is therefore distinguished from a simple flat tab. Said volume element has opposite convex faces 50A-50J and concave 51A-51J. In the embodiments illustrated in FIGS. 1 to 19, the protuberances adjacent to the respective openings 7A-7J form the protuberances 5A-5J of the first series integral with the cover 3, which in this case project radially towards the inside of the cover 3, so that the convex face 50A-50J of each volume element is advantageously arranged facing the inside of the apparatus 1. Said volume element is advantageously formed by a localized radial deformation of the envelope ( tank and / or lid). In other words, each volume element is advantageously formed by a local volume deformation of the material constituting the casing of the tank 2 and / or lid 3. Each volume element thus forms a protuberance, which comes from material with the envelope concerned (cover and / or tank) and which protrudes from said envelope by defining on one side a convex face 50A-50J and on the other side, in "negative", a face 3033993 19 concave 51A-51J for example corresponding to the application of a forming tool. The use of such elements in volume to form the first and / or second series of growths of the bayonet locking means makes it possible easily to obtain, by simple deformation of material, an excrescence which has excellent mechanical properties, and in particular a resistance to bending much greater than that of the metal tongues used in the bayonet locking means of the known pressure cookers. The use of a volume element obtained by localized radial deformation of the envelope of the cover 3 and / or of the vessel 2 makes it possible to obtain a locking protrusion having a high quadratic moment section relative to the vertical axis. application of the locking forces exerted by the corresponding outgrowth of the other series. In addition, any hinge effect, particularly detrimental to flexural strength, is minimized by virtue of the three-dimensional nature of the element in volume and the fact that it comes from material with the envelope from which it is derived. This material continuity (resulting from the fact that the volume element is obtained by a localized radial deformation) and the voluminal nature of the outgrowth thus obtained leads to the production of an extremely rigid and resistant locking ramp. bending, even when the volume element is very localized and does not extend over a significant length of the perimeter of the envelope (lid 3 and / or tank 2) from which it is derived. The invention makes it possible in particular to easily obtain locking projections 5A-5J having a length L to height H ratio of less than 4, preferably less than 3, even more preferably less than 2. Thanks to the invention It is thus possible to obtain bayonet locking protrusions which need not be long, nor be made from thick sheet metal, to have sufficient mechanical properties. This shorter length significantly reduces the amplitude of the angular displacement required to cooperate together the first and second series of excrescences 5A-5J, 6A-6J. Due to the reduced size of the elements in volume, it is possible to go from the pre-locking configuration of the lid 3 relative to the tank 2 to the locking configuration of the lid 3 relative to the tank 2 by relative rotation of the lid 3 3033993 20 of the vessel 2 at a relatively low angle, for example less than 30 °, and even more preferably less than 20 °, for example of the order of 15 °. Preferably, in accordance with the embodiment of FIGS. 1 to 16, said protrusion 5A-5B adjacent to said opening 7A-7B is formed by a puncture.
    [0013] The opening 7A-7B may for example be obtained directly during stamping, by localized and controlled tearing of the material forming the envelope under the effect of the stamping operation, or on the contrary be carried out beforehand or after the deformation operation (for example by means of a cutting laser beam or any other cutting tool). Each protrusion 5A-5J may be formed by a single puncture, as illustrated, or alternatively by a double puncture. The use of a flat is particularly advantageous because it provides a volume element particularly rigid and resistant to bending, extremely simple, fast and cheap to manufacture. As illustrated in FIGS. 1 to 16 and 23, said protrusion 5A-5J adjacent to said opening 7A-7J is advantageously formed by a shell delimited by a peripheral edge of which said edge 70A-70J of said opening 7A-7J is preferably part. . Advantageously, said peripheral edge comprises a first portion located on, and attached to, the corresponding envelope and a second portion (formed for example in this case by the central portion 700A) free which forms a bearing face against which is 20 intended to support an outgrowth 6A-6J of the other series. Thus, the first portion of said peripheral edge is inscribed on the surface of the envelope from which the protrusion 5A-5J concerned originates, while the second portion projects from said envelope to form said locking protuberance 5A-5J. Advantageously, the second free portion of the peripheral edge of the shell forming in this case the protrusion 5A-5J extends substantially in a horizontal plane, perpendicular to the central axis X-X ', and preferably extends according to a curved profile between two ends located on, and attached to, the envelope from which the protrusion 5A-5J concerned (that is to say, in the embodiments illustrated in the figures), the annular belt 3B of cover 3). Preferably, said first portion of the peripheral edge of the shell extends at least partly in a flared profile from bottom to top, for example a substantially V-shaped 3033993 21 (FIG. 11) or U-shaped profile (FIG. 12). and 13). As illustrated in the figures, said first portion of the peripheral edge of the shell extends longitudinally between two ends which respectively correspond to the two ends between which extends longitudinally the second portion of the peripheral edge, formed in this case by the central portion. 700A of the edge 70A-70J of the opening 7A-7J concerned. Each protrusion thus extends, in the vertical direction shown by the central axis X-X ', between a foot and a top, said vertex being formed by said second portion of the peripheral edge of the shell. Advantageously, said first portion is itself formed of at least two segments converging towards each other from the top to the foot.
    [0014] Preferably, each outgrowth 5A-5J, as well as each adjacent aperture 7A-7J, is symmetrical with respect to a median radial plane PO-P3. More precisely, in the example of FIG. 11, the first portion of the peripheral edge includes two V-shaped inclined portions whose lower ends meet and whose upper ends are connected by the radially deformed central portion 700A. In the embodiment of FIG. 12, the first portion of the peripheral edge of the shell has a continuously rounded shape which extends between two free upper ends connected by the radially deformed central portion 700A. Finally, in the embodiment of FIG. 13, the first portion of the peripheral edge of the shell forming the volume element includes two inclined portions connected by a horizontal section, so as to have a generally "barque" shape of which the free upper ends are interconnected by the central portion 700A radially deformed. The protuberances 5A-5J also serve, in particular when they have a V-shaped gusset shape as illustrated in FIGS. 1 to 16, as support for the seal 4, which is thus retained by the gussets in question when the cover 3 is separated from the tank 2, no additional element for holding the gasket 4 relative to the lid 3 is therefore necessary. The seal 4, which is advantageously a lip seal, can also be easily dissociated from the lid 3, and even more easily be put back into place thanks to the "conical" shape of the gussets forming the protuberances 5A-5J, which form which allows the seal 4 to slide until it reaches its final position of support against and on the upper free edge 70A-70J of the gussets (see Figure 10). Of course, the invention is in no way limited to a particular shape of a peripheral edge, even though a substantially convergent shape from top to bottom, as illustrated in FIGS. 11 to 13, is particularly advantageous in facilitating the 5A-5J self-positioning of the protrusions in the corresponding notches 61A-61J formed through the annular flange 60 of the tank 2. Advantageously, as emerges particularly from FIG. 8, each projection 5A-5J presents, in projection on a radial plane PO-P3, a flared profile of the foot towards the top. Thus, each protuberance 5A-5J is advantageously in the form of a gusset that converges from top to bottom both in the radial plane PO-P3 and in the tangential plane (ie the plane of the sheet of FIGS. 11 to 13 ), which facilitates the self-positioning of the gussets in the corresponding notches 61A-61J formed through the annular rim 60 of the tank 2.
    [0015] It is also conceivable that the tank and lid ramps are distributed at equidistant angles from each other. However, according to a preferred variant, illustrated in FIGS. 14 to 16, the cover protuberances 5A-5J (formed in this case by stamped gussets), as well as the corresponding notches 61A-61J formed through the annular flange 60 of FIG. the vessel 2 are regularly spaced apart by a first angle r3, except four of them which are spaced two by two from a second angle a. Such an irregular angular disposition has the following two advantages: once the cover 3 has been locked relative to the tank 2 (FIG. 15), the second angle a, advantageously chosen to be greater than the first angle f 3, will create in the metal structure a zone of preferential deformation at which the seal seal 4 may preferentially escape (creep) in the event of abnormal overpressure, in order to create a vapor leak and thus reduce the internal pressure. the implementation of two different angles a and j3 allows the installation of the cover 3 only in two relative positions only (one of which is illustrated in FIG. 14), symmetrical with respect to the X axis -X '. FIG. 16 shows, on the other hand, that if the gussets 5A-5J of the lid 3 are not presented in the required position relative to the corresponding notches 61A-61J of the tank 2, then only two of them 5A, 5E can be presented to the notch right of the tank 2, which prevents any incorrect relative positioning of the tank 2 and the lid 3. It is however perfectly possible, to promote the balance of forces, that the angles a and j3 are equal, to which 5A-5J gussets are evenly spaced angularly, or all 5A-5J gussets are regularly spaced angularly from the same angle except two of them separated by a different angle, so as to allow the establishment of the lid 3 only in a single relative position. Preferably, in the embodiments of FIGS. 1 to 16, the protuberances 5A-5J are located on the annular belt 3B of the cover 3 at a distance from the second free circular edge 31B of said belt 3B, so that the annular belt 3B 15 forms, beyond the protuberances 5A-5J, a self-centering skirt of the lid 3 relative to the tank 2. This self-centering skirt makes it possible, in cooperation with the quasi-continuous lateral flange 60 the exception of the notches 61A-61J) of the tank 2, the lid 3 to position themselves naturally and spontaneously centrally relative to the tank 2 when it is deposited on the latter.
    [0016] The invention furthermore relates, as such, to a method of manufacturing a device 1 for cooking food under pressure, and in particular to manufacturing an appliance 1 according to the foregoing description. Therefore, the whole of the foregoing description concerning the apparatus 1 as such remains perfectly valid and applicable, mutatis mutandis, to the manufacturing method according to the invention, and vice versa.
    [0017] The process in question is therefore a method of manufacturing a device 1 for cooking food under pressure comprising at least: - a tank 2 and a lid 3 intended to be locked relative to the tank 2 to form with this last a cooking chamber capable of mounting pressure, 5 - bayonet locking means forming first and second series of excrescences 5A-5J, 6A-6J which are secured respectively to the cover of the cover 3 and the shell of the tank 2 and which are intended to cooperate together to ensure the locking of the lid 3 relative to the tank 2. According to the invention, said method comprises: - a step of producing, through at least one of said envelopes of a plurality of openings 7A-7J, each opening 7A-7J being advantageously each delimited by at least one respective edge 70A-70J, and a step of forming a plurality of excrescences 5A-5J each adja at a respective opening 7A-7J of said plurality of apertures, said plurality of protuberances 5A-5J forming at least one of said first and second series of excrescences. Preferably, said step of forming said plurality of protuberances 5A-5J comprises an operation for forming each of said protuberances 5A-5J by localized radial deformation of the corresponding envelope. Advantageously, said localized radial deformation of the envelope is made by stamping the constituent material of the envelope. However, it is perfectly possible to use any other technique of deformation of the material, such as for example the hydroforming technique or the magnetoforming technique, without departing from the scope of the invention.
    [0018] Preferably, said step of producing a plurality of openings 7A-7J is performed by a laser cutting operation of the envelope concerned, which allows a precise and fast cutting to be performed, being understood that other cutting means could possibly be implemented. Advantageously, the step of producing a plurality of openings 7A-7J is performed before said step of forming said plurality of protuberances 5A-5J, which advantageously allows the edges of each opening 7A-7J to be used. to form, by deformation of the constituent material of the envelope in the vicinity of the opening, each of said protuberances 5A-5J, for example by stamping or folding. The presence of the aperture 7A-7J facilitates stamping and allows the use of a portion of the edge 70A-70J to form a particularly rigid bearing surface for interacting with one protrusion of the other series to lock the lid. 3 in relation to the tank 2. Thus, in this particularly advantageous embodiment illustrated in particular in FIGS. 1 to 16, said step of forming said plurality of growths 5A-5J includes a step of radial deformation of each of said edges 70A-70J. so that said edges 70A-70J are each part of one of said protuberances 5A-5J, as described in detail above. In the particularly advantageous embodiment illustrated in FIGS. 1 to 16, the method firstly comprises a step of stamping a discoidal metal blank, in order to obtain a cup-shaped lid element with a cover element. discoid 3A extended at its periphery by a falling edge forming an annular belt 3B. The lid member thus obtained is then subjected to cutting operations, aimed at providing, through the annular belt 3B, narrow slots corresponding to the aforementioned openings, spaced apart from each other along the circumference of the belt 3B. Preferably, the slots are slightly bent so that at the end of the subsequent operation of localized radial deformation of the annular belt 3B, intended to form the protrusion 5A-5J, the edge 70A-70J deformed radially s' inscribed in a substantially horizontal plane, and thus forms a substantially horizontal and flat bearing face. Preferably, the cutting step in question is carried out by attaching the lid member to a rotating mandrel so as to successively present different angular sectors of the annular belt 3B of the cover 3 to a cutting laser beam, which produces lines slit-forming section outside the annular belt 3B. Then, once the slots have been made, volume elements are formed by pushing the lower edge 70A-70J of each slot towards the inside of the lid 3, for example by stamping the material situated at the level of said edge 70A-70J and under the latter, to obtain a series of "gussets" 5 locking protruding from the inner face of the annular belt 3B and forming said protuberances 5A-5J. According to an alternative example of a manufacturing method according to the invention, it is also possible to make the openings (again, for example in the form of curved slots) on a flat metal strip, then to make, on this flat metal strip, 10 the protuberances 5A-5J by stamping said flat metal strip at each opening 7A-7J to deform the lower edge 70A-70J, and thus obtain a flat metal strip from which gussets projecting similar to those described above, gussets that come from material with the flat metal band. The method then comprises in this case a subsequent step of bending the metal band provided with gussets, to obtain an annular belt provided with gussets projecting from its inner face. Then, the method comprises in this case an assembly operation (for example by welding) of the belt provided with gussets thus obtained to a discoid closure element, in order to obtain a complete subset of the lid. According to yet another possibility, the discoid belt provided with gussets 20 could be attached to the inner face of an annular outer belt which is itself already integral with a discoidal closure element. Moreover, as regards the embodiment of FIGS. 17 to 19, the corresponding manufacturing method is characterized this time by the fact that the step of producing the opening 7A-7J may possibly be carried out after the training step. of the associated 5A-5J outgrowth. For example, to obtain the pressure cooker of FIGS. 17 to 19, a metal cover member is first made by stamping a discoidal metal blank to obtain a cover member having a discoidal cover member 3A which extends at its periphery by an annular belt 3B. The annular belt 3B in question is then subjected to stamping operations 30 for locally deforming the annular belt 3B, preferably over its entire height, to form radial protrusions directed towards the center of the lid 3. These Radial protuberances are then cut so as to be provided with a horizontal slot intended to allow the passage and the capture of the annular rim 60, as illustrated in FIGS. It is also possible, according to an alternative embodiment, first to cut the annular belt 3B and then stamp it to obtain the pressure cooker of FIGS. 17 to 19. It is moreover perfectly possible to resort to excrescences. 5A-5J that are not formed by volume elements. For example, in the embodiments of Figures 20 to 22, each protrusion 5A-5J is in the form of a flat flap connected to the remainder of the envelope by one of the edges 70A-70J of the opening 7A-7J corresponding. In this case, a cutout according to a generally U-shaped profile (in this case inverted) is formed through the envelope (here the annular belt 3B) in order to define a flap which is for example of substantially rectangular shape and attached to the rest of the envelope by one of its sides (in this case the large lower side).
    [0019] A centripetal radial thrust is then exerted on the flap in question to fold it inwardly by rotation about its lower side attaching it to the rest of the envelope. This makes it possible to simultaneously form the protrusion 5A-5J and the corresponding opening 7A-7J, which is delimited in particular by a substantially straight lower edge 70A-70J which also forms the lower edge of the shutter. The latter may be inclined relative to the horizontal plane at a substantially zero angle (FIG. 22) or less than 90 ° (for example of the order of 45 ° - FIGS. 20 and 21). In the example of FIG. 23, the protuberances 5A-5J present this time a voluminal character and are obtained substantially according to the same principle as the gussets of FIGS. 1 to 16, except that the bearing and interlocking surface intended for contacting the protuberances 6A-6J of the other series is not directly formed by the edge 70A but by the convex surface 50A of the pressed volume element. The tank 2 is made for example by stamping a metal blank, to obtain a cylindrical cell element provided at its free upper edge 2C of a flange which extends radially outwardly. Said collar is then cut to form notches 61A-61J for passing protrusions 5A-5J for locking the lid 3. Finally, the invention makes it possible, in particular in the preferred embodiment of FIGS. 1 to 16, to to obtain easily and at low cost a bayonet locking system 5 particularly robust and efficient, by optimizing the amount of material required, through the implementation of reduced metal thicknesses. The invention thus makes it possible, in the embodiment of FIGS. 1 to 16, to manufacture a metal lid 3 from a blank less than 1 mm thick, and for example between 0.6 and 1 mm, more preferably of the order of 0.9 mm. In the same way, the tank 2, with its annular flange 60, can be manufactured by forming a metal blank with an initial thickness of less than 1 mm, for example of the order of 0.8 or 0.9 mm. , it being understood that the implementation of certain forming techniques (stamping, drawing ...) can lead the side wall 2B of the tank 2 to have a thickness less than the initial thickness of the blank and the lateral flange 60 to present a thickness greater than the initial thickness of the blank. The implementation of other forming techniques (hydroforming, spinning ...) could lead to different thickness changes. The pressure cooker according to the invention therefore has a weight significantly lower than that of the bayonet pressure cookers of the prior art. Not only the presence of openings 7A-7J formed through the cover 3 allows 20 the user to know at a glance the positioning of the cover ramps, and to be able to directly visualize the mutual commitment of the ramps of tank and lid, but it also facilitates the achievement of locking ramps exhibiting remarkable mechanical behavior, by simple deformation of material in the vicinity of an opening.
    [0020] The invention also makes it possible to obtain locking means whose components come directly from material with the tank 2 and the lid 3, without the need to use inserts such as a stirrup, ears, jaws or segments.
    权利要求:
    Claims (23)
    [0001]
    CLAIMS1 - Apparatus (1) for cooking food under pressure comprising at least: - a tank (2) and a lid (3) to be locked relative to the tank (2) to form a suitable cooking chamber therewith pressurized, - bayonet locking means forming first and second series of excrescences (5A - 5J, 6A - 6J) which are integral respectively with the cover of the cover (3) and the envelope of the tank (2) and which are intended to cooperate together to ensure the locking of the lid (3) relative to the tank (2), said apparatus (1) being characterized in that each outgrowth (5A-5J) of at least l one of said series is adjacent to a respective opening (7A-7J) formed through the corresponding envelope.
    [0002]
    2 - Apparatus (1) according to claim 1 characterized in that said opening is delimited by at least one edge (70A) which also contributes to delimiting said outgrowth (5A - 5J) adjacent said opening (7A - 7J).
    [0003]
    3 - Apparatus (1) according to claim 2 characterized in that said edge (70A - 70J) of said opening forms a bearing surface against which is intended to bear one protrusion (6A - 6J) of the other series .
    [0004]
    4 - Apparatus (1) according to one of claims 1 to 3 characterized in that said protrusion (5A - 5J) adjacent to said opening (7A - 7J) is formed by a deformed portion of the corresponding envelope.
    [0005]
    5- Apparatus (1) according to claims 2 and 4 characterized in that said edge (70A - 70J) of said opening (7A - 7J) is part of said deformed portion.
    [0006]
    6 - Apparatus (1) according to claim 4 or 5 characterized in that said deformed portion is obtained by stamping the corresponding envelope. 3033993 30
    [0007]
    7 - Apparatus (1) according to claim 2, 3 or 5 characterized in that said adjacent outgrowth (5A - 5J) to said opening (7A - 7J) is formed by a shell delimited by a peripheral edge of which said edge ( 70A - 70J) of said opening (7A - 7J).
    [0008]
    8 - Apparatus (1) according to claim 7 characterized in that said peripheral edge 5 comprises a first portion located on and attached to the corresponding envelope and a second free portion which forms a bearing surface against which is intended to come to bear one outgrowth (6A - 6J) of the other series.
    [0009]
    9 - Apparatus (1) according to claim 8 characterized in that said second free portion extends substantially in a horizontal plane. 10
    [0010]
    10-Device (1) according to one of claims 1 to 9 characterized in that said protrusion (5A - 5J) adjacent to said opening (7A - 7J) is formed by a flat.
    [0011]
    11 Apparatus (1) according to one of claims 1 to 10 characterized in that said protrusion (5A - 5J) adjacent to said opening (7A - 7 J) is formed by a volume element which has convex and concave faces opposed. 15
    [0012]
    12-Device (1) according to claim 2 characterized in that said edge of said opening is formed by a central portion flanked on both sides by two end portions, only said central portion being deformed radially to have a curved profile and thus forming part of the outgrowth (5A - 5J) adjacent to the opening (7A - 7J), said extremal portions not being part of said outgrowth (5A - 5J).
    [0013]
    13-Apparatus (1) according to one of the preceding claims characterized in that said protuberances adjacent to the openings (7A - 7J) respectively form the protrusions (5A - 5J) of the first series integral with the cover of the cover (3) . 3033 993 31
    [0014]
    14-Apparatus (1) according to claim 13 characterized in that the cover of the cover (3) includes a discoid cover member (3A) and an annular belt (3B) which rises between a first circular edge ( 30B) integral with the discoid cover member (3A) and a second free circular edge (31B), said openings (7A - 7J) being located on said belt (3B), away from said first and second circular edges (30B). - 31B).
    [0015]
    Apparatus (1) according to claim 13 or 14 characterized in that said protuberances (5A - 5J) of the first series project radially inwardly of the lid (3). 10
    [0016]
    16 -Device (1) according to one of claims 13 to 15 characterized in that the vessel (2) comprises a bottom (2A) and an annular side wall (2B) which rises between said bottom (2A) and a free upper edge (2C) delimiting an access opening within the vessel 2, the outgrowths (6A-6J) of the second series being formed by an annular flange (60) projecting outwardly at from said free upper edge (2C), notches (61A-61J) passing said protuberances (5A-5J) of the first series being formed through said annular flange (60).
    [0017]
    17-Apparatus (1) according to claim 16 characterized in that said annular flange (60) includes a flange which extends substantially radially and outwardly from said free upper edge (2C), and a skirt which extends substantially downwards between an upper edge (600A) integral with the flange and a lower edge (600B) free against which the projections (5A - 5J) of the first series are intended to come to bear to lock the lid (3) relative to the tank (2).
    [0018]
    18 - Method of manufacturing a device (1) for cooking food under pressure comprising at least: - a tank (2) and a lid (3) to be locked relative to the tank (2) to form with this last a cooking chamber capable of mounting pressure, 30 - a bayonet locking means forming first and second series of excrescences (5A - 5J, 6A - 6J) which are secured respectively to the cover of the cover and of the casing of the tank and which are intended to cooperate together to ensure the locking of the lid (3) relative to the tank (2), said method being characterized in that it comprises: a step of carrying out, through at least one of said envelopes, a plurality of openings (7A-7J), and a step of forming a plurality of excrescences (5A-5J) each adjacent to a respective one of said plurality of openings, said plurality of excrescences (5A - 5J) forming at least one of said first and second series of excrescences.
    [0019]
    19 - Process according to claim 18 characterized in that said step of forming said plurality of excrescences (5A - 5J) comprises an operation of forming each of said excrescences by localized radial deformation of the corresponding casing 15.
    [0020]
    20 - Process according to claim 19 characterized in that said localized radial deformation of the envelope is made by stamping the constituent material of the envelope.
    [0021]
    21 - Method according to one of claims 18 to 20 characterized in that said step of making a plurality of openings (7A - 7J) is performed before said step of forming said plurality of excrescences (5A - 5J ).
    [0022]
    22 - Method according to one of claims 18 to 21 characterized in that each opening (7A - 7J) of said plurality of openings is delimited by at least one edge (70A - 70J) respectively, said step of forming said plurality protrusion device (5A-25J) including a step of radial deformation of each of said edges (70A-70J) so that said edges (70A-70J) are each part of one of said protuberances (5A-5J). 3033993 33
    [0023]
    23 -Procédé according to one of claims 18 to 22 characterized in that said step of producing a plurality of openings (5A - 5J) is performed by a laser cutting operation of the envelope concerned.
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    同族专利:
    公开号 | 公开日
    BR102016006440A2|2016-10-04|
    CN105996747B|2020-09-18|
    PL3072423T3|2019-12-31|
    ES2747266T3|2020-03-10|
    US10542836B2|2020-01-28|
    CN105996747A|2016-10-12|
    KR20160115759A|2016-10-06|
    MX2016003760A|2017-03-10|
    JP2016195760A|2016-11-24|
    PT3072423T|2019-10-14|
    WO2016151237A1|2016-09-29|
    JP6721373B2|2020-07-15|
    CN206303697U|2017-07-07|
    US20160278565A1|2016-09-29|
    EP3072423A1|2016-09-28|
    EP3072423B1|2019-08-21|
    FR3033993B1|2017-04-28|
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    法律状态:
    2016-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-30| PLSC| Publication of the preliminary search report|Effective date: 20160930 |
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    2017-06-23| CA| Change of address|Effective date: 20170518 |
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    2021-12-10| ST| Notification of lapse|Effective date: 20211105 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1552579A|FR3033993B1|2015-03-26|2015-03-26|BAIONNETTE COOKER AND MANUFACTURING METHOD THEREOF|FR1552579A| FR3033993B1|2015-03-26|2015-03-26|BAIONNETTE COOKER AND MANUFACTURING METHOD THEREOF|
    PL16161745T| PL3072423T3|2015-03-26|2016-03-22|Pressure cooker with bayonet and method for manufacturing the same|
    PCT/FR2016/050631| WO2016151237A1|2015-03-26|2016-03-22|Pressure cooker with bayonet, and corresponding manufacturing method|
    ES16161745T| ES2747266T3|2015-03-26|2016-03-22|Bayonet pressure cooker and corresponding manufacturing procedure|
    EP16161745.1A| EP3072423B1|2015-03-26|2016-03-22|Pressure cooker with bayonet and method for manufacturing the same|
    PT161617451T| PT3072423T|2015-03-26|2016-03-22|Pressure cooker with bayonet and method for manufacturing the same|
    KR1020160034394A| KR20160115759A|2015-03-26|2016-03-23|A bayonet pressure cooker and a corresponding method of fabrication|
    MX2016003760A| MX2016003760A|2015-03-26|2016-03-23|Bayonet pressure cooker and a corresponding method of fabrication.|
    BR102016006440A| BR102016006440A2|2015-03-26|2016-03-23|bayonet pressure cooker and a corresponding manufacturing method|
    US15/081,303| US10542836B2|2015-03-26|2016-03-25|Bayonet pressure cooker and a corresponding method of fabrication|
    CN201610180179.2A| CN105996747B|2015-03-26|2016-03-28|Bayonet pressure cooker and corresponding production method|
    JP2016064160A| JP6721373B2|2015-03-26|2016-03-28|Bayonet pressure cooker and corresponding manufacturing method|
    CN201620244990.8U| CN206303697U|2015-03-26|2016-03-28|For the utensil of cooking food under stress|
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