• 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:
    The present invention relates to a screwing system comprising: - a screwing device comprising a body (1) at one end of which is mounted an output shaft (2) rotatably mounted, said body (1) housing motor means (100); ) connected to said output shaft (2) by means of a transmission (3, 4), - at least one screwing accessory (40, 50, 80, 90) for cooperating with said output shaft (2) to be rotated, at least one reversible securing means of said at least one screwing accessory (40, 50, 80, 90) to said screw device, means for recognizing said accessory (40, 50, 80, 90) when is secured to said device via said securing means, said recognition means comprising an electronic tag reader (9) integral with said device and an electronic tag (46, 58, 84, 92) integral with said accessory (40, 50, 80, 90), said reader (9) and said label (46, 58, 84 , 92) being positioned, when said accessory (40, 50, 80, 90) is secured to said device, in the axis of said output shaft (2), said reader (9) being connected to at least one feed wire and / or data transmission (13), said at least one wire (13) extending in said device in the axis of said output shaft (2).
    公开号:FR3020300A1
    申请号:FR1453750
    申请日:2014-04-25
    公开日:2015-10-30
    发明作者:Benoit Abrassart；Florian Theureaux
    申请人:Georges Renault SAS；
    IPC主号:
    专利说明:

    [0001] 1. FIELD OF THE INVENTION The field of the invention is that of the design and manufacture of screwdriving devices commonly known as screwdrivers, in particular such devices. portable. 2. Prior Art Portable screwdrivers are commonly used in particular in the aerospace industry and the automotive industry to tighten assembly of structures. Clamping such assemblies generally requires to be performed reliably, that is to say with a high level of accuracy. To satisfy this need, the screwdrivers have been developed. Screws of this type comprise means for measuring the tightening torque and / or the tightening angle of the screws. They are generally controlled via control means for programming different screwing strategies, in particular depending on the size of the screws, the elasticity of the assembly, the desired accuracy in the tension installed in the assembly due to tightening. ..
    [0002] A screwing strategy is constituted by a set of parameters defining the behavior that the screwdriver must have during a screwing operation. These parameters can relate to the target to be achieved in terms of tightening (a certain level of torque or tightening angle), but also on how to get there: the motor is driven at a given level of rotation frequency until a first torque level is reached during the screwing phase during which the screw head approaches the parts to be assembled, and then at another level of rotation frequency during the screwing phase during the tightening torque increases until the target torque is reached.
    [0003] On an assembly line, an operator is generally required to screw different sizes of screw therefore calling different screwing strategies. The screws to be clamped also often have different shapes which implies the use of different sockets. In addition, some screws may be located in a crowded environment and therefore be relatively difficult to reach. It may then be necessary to use an axis return to tighten them. An operator is therefore generally required to change the screwing accessory (bushings, axle return, etc.) while he is chaining the tightening of different elements, and to select accordingly the adapted screwing strategy in the control means. These changes in screwing accessories and selections of screwing strategies lead to loss of time and a risk of error.
    [0004] To overcome these disadvantages, the socket boxes have been developed. These socket boxes comprise a receptacle housing a plurality of bushings and axis returns, and include a presence sensor for each of these accessories. This socket box is connected to the control means of the screwdriver so that when the presence of an accessory is no longer detected in the box, which means that it is secured to the screwdriver to ensure screwing a given element, then the corresponding tightening strategy is automatically activated. The use of such socket boxes makes it possible to secure the selection of the screwing strategy adapted to the screwing accessory used and to the corresponding assembly. These boxes, however, have the disadvantage of being rather impractical to use because of their large volume and the cable that connects them to the screwdriver, particularly in the cramped and / or congested work spaces. To obviate the disadvantages inherent in the implementation of socket boxes, it has been thought to equip the sockets with an electronic tag and the screwdrivers of an electronic tag reader. Thus, when a screwing accessory is attached to the screwdriver, the control means read the information about it on the label by means of the reader and select the corresponding screwing strategy. This technical solution does not have the disadvantages of socket boxes in terms of convenience of use. It nevertheless has some disadvantages. The securing means of screwing accessory screwdrivers of this type do not allow to bind to them accessories of different types. They are indeed only designed to allow to fasten to the screwdriver different bushings or thumbprints. On the other hand, they do not allow to join sometimes different bushings, sometimes different axis references for example. Another disadvantage of this solution is that the electronic labels, and sometimes the associated reader, are placed at the periphery and / or on the surface of the accessory or the screwdriver so that they are exposed to shocks with the external environment. during handling and handling of the screwdriver. OBJECTIVES OF THE INVENTION The object of the invention is in particular to provide an effective solution to at least some of these various problems. In particular, according to at least one embodiment, an object of the invention is to provide a particularly robust technique that makes it possible to ensure the recognition of a fastening accessory secured to a screwdriver by reading its identifier. Another objective of the invention will be, according to at least one embodiment, in addition to reading the identifier of the screwing accessory, reading information relating to a screwing strategy specific to this accessory or relative its maintenance or its own characteristics.
    [0005] The invention also aims, according to at least one embodiment, to provide a technique that allows to fasten to the same screwdriver accessories of different types, for example sometimes a socket sometimes an axis return. Another object of the invention is, according to at least one embodiment, to provide such a technique that is simple to implement and / or ergonomic and / or simple design. 4. PRESENTATION OF THE INVENTION For this, the invention proposes a screwing system comprising: a screwing device comprising a body at one end of which is mounted an output shaft rotatably mounted, said body housing motor means connected to said output shaft by means of a transmission, at least one screwing accessory intended to cooperate with said output shaft to be rotated, at least one reversible connection means of said at least one screwing accessory to said screwing device, means for recognizing said accessory when it is secured to said device via said securing means, said recognition means comprising an electronic tag reader integral with said device and an electronic tag secured to said accessory, said reader and said tag being positioned, when said accessory is secured to said device, in the axis of said fate tree ie, said reader being connected to at least one power and / or data transmission wire, said at least one wire extending in said device in the axis of said output shaft. Thus, the technique discussed proposes an original solution that consists of placing the electronic tag reader and the electronic tag, when the accessory which it is integral is secured to the screwdriver, in the axis of the junction between the screwdriver and the 'accessory.
    [0006] Thus, both the electronic tag and the tag reader are isolated from the outside, which helps to protect them against shocks to the environment. This also makes it possible to offer the possibility of securing to the screwdriver accessories of different types such as bushings and axle references. This improves ergonomics.
    [0007] According to an advantageous characteristic, said body comprises a first body portion housing said motor means and a second body portion housing said output shaft, said second body portion being traversed by at least one hole within which said at least one a wire, said body and said hole being configured to allow said wire to extend outside said body along said first body portion. It is thus possible to connect by an electric wire the electronic tag reader with the electronic control card of the screwing device. The wire will of course preferably be protected against crushing by a housing to join the electronic control card of the tightening device located in its handle. According to an advantageous characteristic, said transmission comprises at least a first and a second pinion meshing with each other, said second pinion being rotatably connected to said output shaft, said at least one wire extends through said second pinion . It is thus possible to place the wire in the axis of the junction between the screwing device and the screwing accessory by passing it through the second pinion. According to an advantageous characteristic, said first and second pinions belong to the group comprising: the conical type gears; parallel type gears.
    [0008] The screwing device can thus be of the angle-of-turn type in which the axis of the output shaft forms a non-zero angle with that of the motor means, or of the axis-return type in which the axis of the output shaft extends parallel to the axis of the motor means. According to an advantageous characteristic, said device comprises an axis extending along the axis of rotation of said second pinion and passing therethrough, said axis being traversed by a passage inside which extends said at least one a wire. It is thus possible to place the wire in the axis of the junction between the screwing device and the screwing accessory by passing it through the passage formed through this axis. The wire is thus protected. According to an advantageous characteristic, said axis is fixed relative to said body. According to an advantageous characteristic, said reader is integral with said axis.
    [0009] The fixed axis is an effective support for the reader. According to an advantageous characteristic, said output shaft comprises an inner hollow housing adapted to receive a securing portion of said screwing accessory, said reader extending on the edge of said hollow inner housing such that when said accessory is secured to said device and that said accessory securing portion is housed inside said hollow inner housing, said label and said reader are facing each other. The quality of reading by the reader of the contents of the electronic tag is thus improved.
    [0010] According to an advantageous characteristic, said hollow inner housing has a shape complementary to the shape of said securing portion of said screwing accessory, said shapes being configured to ensure a rotational connection of said output shaft with said screwing accessory.
    [0011] This ensures that the screwing accessory can be rotated by the output shaft. According to an advantageous characteristic, said securing means comprise at least: locking elements movable between a locked position in which they cooperate with said screwing accessory or with said device to maintain said accessory and said device integral, and a release position in which they do not cooperate with said screwing accessory or with said device so that said accessory and said device are no longer held together, and means for actuating said locking means, said actuating means being movable between a position of locking in which they act on said locking elements to place them in their locked position, and a release position in which said locking elements can take their release position. This ensures a reversible connection of the screwing accessory to the screw device which is simple to design and use. According to an advantageous characteristic, said reversible joining means comprise: first reversible joining means of a first group of at least one screwing accessory, and second reversible joining means of a second group of at least one accessory screwing. It is thus possible to secure various screwing accessories to the screwing device according to the nature of the screwing operation to be performed. According to an advantageous characteristic, said first and second joining means are coaxial. A compact device is thus provided which nevertheless offers the possibility of joining different types of screwing accessories. According to an advantageous characteristic, said electronic tag contains information belonging to the group comprising: the identifier of said screwing accessory; the parameters of the screwing strategy associated with said screwing accessory; data relating to the maintenance of said screwing accessory; manufacturer and / or user data concerning the screwing device and / or the face accessory. The present invention also relates to a screwing device for a system according to any one of the variants described above. The present invention also relates to a screwing accessory for a system according to any one of the variants previously described. 5. List of Figures Other features and advantages of the invention will appear on reading the following description of particular embodiments, given by way of a simple illustrative and nonlimiting example, and the appended drawings among which: FIG. 1 illustrates a perspective view of a screw device according to the invention; Figure 2 illustrates a detail view of a section of the angle head of the screw device of Figure 1; Figures 3 and 4 respectively illustrate a socket and its attachment to a screwdriver according to the invention; Figures 5 and 6 respectively illustrate an extension sleeve and its attachment to a screwdriver according to the invention; Figures 7 and 8 respectively illustrate a hold and drive and its attachment to a screwdriver according to the invention; Figures 9 and 10 respectively illustrate a return axis and its attachment to a screwdriver according to the invention. 6. Description of a particular embodiment 6.1. Architecture 6.1.1. Screwdriver There is shown, with reference to FIGS. 1 and 2, an exemplary embodiment of a screwing device according to the invention.
    [0012] As shown in these figures, such a screwing device conventionally comprises a body 1. This body 1 comprises a first portion 10 which houses motor means. In this embodiment, it is an electric motor 100. The body 1 also comprises a second portion 11 which houses an output shaft 2. As will be explained in more detail later, this shaft 2 is provided to cooperate with a screwing accessory so as to drive it in rotation. The body 1 constituted by the two portions 10 and 11 incorporates a transmission of rotation between the motor 100 and the output shaft 2 such that the end of the shaft 2, opposite that provided for cooperating with a screwing accessory, is free from any moving parts. The motor means are therefore not in the extension of the shaft 2 and said end of the shaft 2 faces the outer wall of the portion 11. In general, the motor means may be either perpendicular to the shaft 2, that is parallel and offset from the shaft 2.
    [0013] The driving of the shaft 2 is achieved by means of the transmission which comprises in particular a first gear 4 rotated by the motor and a second gear 3 coaxial with the shaft 2, the second gear 3 cooperating with the first pinion 4. The first 4 and second 3 pinions may be a pair of bevel gears or a pair of parallel gears. In the embodiment illustrated in Figures 1 and 2, this transmission, which is only partially shown, comprises a pair of bevel gears.
    [0014] This pair of bevel gears comprises a first conical gear 4 which is mounted in the extension of the drive means, and a second conical gear 3 which is connected in rotation with the output shaft 2. In this embodiment, the axis of the first bevel gear 4 forms with that of the second bevel gear 3 at a right angle. The value of this angle may be different, in particular greater than 900. The end of the body 1 housing the output shaft 2 thus constitutes a corner head 5. The corner head 5 houses an axis 6 which is secured in a fixed manner inside the body portion 11. The second bevel gear 3 is rotatably mounted on the axis 6 by means of a bearing 7. The end of the body portion 11 comprises a peripheral groove 110 inner of semi circular section. The output shaft 2 has an outer peripheral groove 20 of semicircular section. These grooves 110 and 20 house balls 8. The output shaft 2 is thus guided in rotation relative to the end of the body portion 11 on the one hand by means of the bearing 7 and on the other hand by means of the Bearing constituted by the grooves 110, 20 and the balls 8. The axis 6 is traversed at its center by a bore 60 which extends along its longitudinal axis. The axis 6 is also traversed by a radial bore 61 which opens into the longitudinal bore 60. The longitudinal bore 60 and the radial bore 61 constitute a passage. The radial bore 61 communicates with the outside of the body 1 of the screwdriver, more particularly the area of the housing housing the pair of pinions. The body 1 is traversed for this purpose by a hole 120 which extends in the extension of the radial bore 61.
    [0015] The end of the axis 6 facing the output shaft 2 comprises a hexagonal outer cavity 62. It also comprises a housing 63 constituted by a bore formed inside thereof. The housing 63 houses an electronic tag reader 9. In this embodiment, it is an RFID chip reader.
    [0016] The reader 9 is connected to at least one wire 13 of power supply and / or data transmission. The output shaft 2 comprises a hollow inner housing 200 adapted to receive a securing portion of a screwing accessory. This inner hollow housing has at its end facing outwardly of the body a hexagonal inner cavity 201 which extends along the longitudinal axis of the output shaft 2. The son or son 13 of electrical power and / or data transmission pass through the longitudinal hole 60 and then the radial hole 61 and finally the hole 120. The hole 120 is configured such that the son or son 13 supply and / or data transmission stretch from the hole 120 along and outside the first body portion 10 housing the motor means. This or these son 13 are connected to the control means (101) of the screwing device. They are protected by a casing positioned on the body 1 (not shown). The screwdriver comprises reversibly securing means of screwing accessories. These securing means are well known in the state of the art. Their purpose is to allow the quick attachment or disassembly of two tooling elements. These two tooling elements comprise a connection interface of the male-female type. The interface may be cylindrical or extruded with a hexagonal section, one of the elements comprising the female part of the interface and the other element the male part.
    [0017] The immobilization in translation of the male part in the female part is obtained by blocking balls integral with the female part, in holes perpendicular to the interface formed in the female part, in a position such that the center of the balls is at level of the interface and protrude into a groove in the male part. Thus a separation effort of the two parts solicits the balls in shear. The female element carries a locking ring allowing the operator to act on the balls to separate the two parts by translating the ring along its axis. The structure of these securing means will be described in more detail below. Such securing means comprise a male element and a female element intended to cooperate with each other. They also comprise: a ring comprising an inner portion of large diameter and an inner portion of small diameter connected by a frustoconical portion, mounted movable in translation between a locking position and a release position, and balls mounted movably between a locked position and a release position, the ring and the balls being integral with the ta-of the female element. The portion of small diameter acts, when the ring is in the locking position, on the balls to place them in their locked position in which they cooperate with a housing of complementary shape provided for this purpose on the male element so that the elements male and female are kept together. When the ring is in the release position, the balls are facing the portion of large diameter so that they can occupy their release position to allow coupling or uncoupling male and female elements. In this embodiment, the securing means comprise: first reversible securing means of a first group of at least one screwing accessory, and second reversible securing means of a second group of at least one accessory screwing. In this embodiment, and as will be explained in more detail below, the first securing means can be secured to the screwdriver screwing sleeves, extension sleeves and screw locking bushings more commonly referred to as "Hold and drive" in English, while the second securing means to secure axis referrals. The first securing means comprise balls 14 secured to the output shaft 2. The balls 14 are movably mounted inside the output shaft 2 between: a locked position in which they project inside the hollow inner housing 200 so as to cooperate, when a screwing accessory is introduced inside the hollow inner housing 200, with an outer groove of complementary shape formed at the periphery of the securing portion of this screwing accessory: screwing accessory is then held by the balls 14 located inside the housing 200, and a release position in which they are at least partly retracted inside the peripheral wall of the output shaft 2 of so as to allow the balls 14 to be dislodged from the groove of the screwing accessory to allow the uncoupling of the latter from the output shaft 2. The screwdriver compr end means for actuating the first securing means. These actuating means comprise a first ring 30 which is mounted to move in translation along the output shaft 2. This ring 30 comprises an inner portion of large diameter 32 and an inner portion 31 of smaller diameter. These two portions are connected by a frustoconical portion 33. This ring 30 is movable relative to the output shaft 2 between: a locking position in which the peripheral wall of the portion of small diameter 31 acts on the balls 14 so to push them into their locking position in which they project inside the hollow inner housing 200 to be housed in the groove provided for this purpose in the screwing accessory, and a release position, reached when the ring 30 is translated according to the arrow A, in which the small diameter portion 31 is not facing the balls 14 while the large diameter portion 32 is in the extension of the balls 14 so that they can come s retract inside the peripheral wall of the output shaft 2 to occupy their release position in which they no longer cooperate with the throat of the vissag accessory e thus allowing the uncoupling of it. A compression spring 34 interposed between the ring 30 and the output shaft 2 tends to bring the ring into its locking position by exerting thereon a return force according to the arrow B.
    [0018] The second securing means comprise an outer groove 15 of semicircular section formed at the periphery of the body portion 11. As will be explained in more detail later, this groove 15 is adapted to accommodate locking elements. secured to a screwing accessory.
    [0019] Both in the first and in the second securing means, the balls integral with the female part are housed in a groove in the male part. This groove is adapted to achieve a stop in translation between the male and female elements along the axis of the interface.
    [0020] This implies to have a complete connection between the two elements that there is a stop in rotation between these two elements along the axis of the interface without which the screwing accessory can not be rotated. This can be achieved by having a hexagonal interface section such as the socket 201. 6.1.2. Sleeve In connection with FIGS. 3 and 4, an example of a face socket according to the invention is presented. Such a screwdriver socket 40 comprises an accessory body 41 which is intended to be housed inside the hollow inner housing 200 of the output shaft 2. This accessory body 41 comprises a first portion whose periphery comprises a male hexagonal recess 42 of complementary shape of the hexagonal female socket 201 formed in the output shaft 2. This first portion also comprises a peripheral outer groove 43 of semicircular section intended to accommodate the balls 14. This first portion comprises still a hexagonal inner footprint 47 can for example accommodate a screw end 48 have a portion of complementary shape. The first portion is extended by a second portion 44 at the end of which is formed a housing 45 which houses an electronic tag such as an RFID chip 46. Thus housed in this housing 45, the RFID chip is flush with the end of the body accessory 41 while being otherwise protected by the accessory body. The first and second portions of the accessory body form a securing portion. 6.1.3. Extension socket With reference to FIGS. 5 and 6, an example of an extension socket according to the invention is shown. Such an extension screwdriver socket 50 comprises an accessory body 51 which is intended to be housed inside the hollow inner housing 200 of the output shaft 2. This accessory body 51 comprises a first portion of end 52, a central portion 53 and a second end portion 54.
    [0021] The central portion 53 comprises a male peripheral hexagonal recess 55 of complementary shape of the hexagonal female socket 201 formed in the output shaft 2. This central portion 53 also comprises a peripheral outer groove 56 of semicircular section intended to house the balls 14.
    [0022] The first end portion 52 comprises a housing 57 which houses an electronic tag such as for example an RFID chip 58. Thus housed in this housing 57, the RFID chip is flush with the end of the accessory body 51 while being otherwise protected. by the accessory body. The second end portion 54 is traversed by a radial hole 541.
    [0023] An extension 59 has at one of its ends a housing 591 of shape complementary to that of the second end portion 54 so as to accommodate it. It is traversed by a radial hole 592 provided to be in the extension of the hole 541 when the second end portion 54 cooperates with the housing 591 so as to insert a pin 593 inside the holes 541, 592 to secure the extension 59 to the accessory body 51. The extension 59 has at the other of its ends a female hexagonal section 594 recess adapted to cooperate with an element to be clamped. The end portions 52 and central 53 constitute a securing portion. 6.1.4. Screw-locking bushing With reference to FIGS. 7 and 8, an example of a hold-and-drive device according to the invention is shown. Such a hold-and-drive device 80 comprises a locking mechanism in rotation of a screw.
    [0024] This locking mechanism comprises a first blocking element 81. This first blocking element 81 comprises at one of its ends a hexagonal socket 810 intended to house a screwdriver bit 82 of complementary shape, itself having a hexagonal footprint. male 820 provided to cooperate with a housing of complementary shape formed in a screw. At its other end, the first locking element comprises longitudinal grooves 811 protruding at its periphery. A bore 812 is formed inside the first locking element 81 from its end having the grooves 811. This locking mechanism comprises a second locking element 83. The latter comprises an internal bore 830, which extends from one of its ends, and inside which are formed grooves 831 of complementary shape of the grooves 811 of the first locking element 81. The first locking element 81 can thus be inserted inside the bore 830. cooperating the grooves 811 and 831 so that the first and second locking members 81, 83 are rotatably connected and the first locking member is translatable along the second locking member. The second locking element 83 comprises at the other of its ends a hexagonal female cavity 832 of complementary shape to the hexagonal male 62 of the axis 6 footprint. This footprint 832 is extended by a housing 833 inside which is placed a RFID tag 84. A guide member 85 extends within the bores 830 and 812. A compression spring 86 is mounted on the guide member 85 between the first and second locking members 81, 83.
    [0025] The first blocking element 81 is thus mounted to move in translation inside the second blocking element 83 against the effect of this spring 86 which tends to move it along the arrow C. The hold and drive device 80 comprises an element 87 training of a nut. This drive element 87 comprises a first drive member 870. The latter comprises at one of its ends a hexagonal socket 871 intended to cooperate with a nut, and at the other end of its ends a threaded portion 872. The drive element 87 comprises a second drive element 873 which comprises at one of its ends a threaded portion 874 of complementary shape of the tapped portion 872 of the first drive element 870. The first and the second training elements can thus be secured to one another. The second drive member 873 comprises at the other end thereof a peripheral groove of semicircular section 875. This is intended to accommodate the balls 14 in the locking position. A hexagonal-shaped male imprint 876 is provided at the periphery of this end of the second drive member. It has a shape complementary to that of the hexagonal female cavity 210 of the output shaft 2. A housing 877 is formed inside the first and second drive elements for housing the first and second locking elements . The drive element 87 is thus rotatably mounted on the first and second locking elements. The second blocking element 83 and the second driving element 873 constitute a securing portion. 6.1.5. Return of axis In connection with FIGS. 9 and 10, an example of axis return according to the invention is presented. In general, an axis return is a screwing accessory which comprises a parallel gear train which makes it possible to offset the axis of rotation of the driving member of the element to be screwed from that of the drive means in the to allow to wait for screws located in a cramped space that are difficult to access or inaccessible directly with a conventional screwdriver. Such an axis of reference 90 comprises an accessory body 900. This accessory body comprises a securing portion 901, a screwing portion 902 interconnected by a connecting portion 903. The securing portions 901 and screwing 902 extend substantially parallel to each other and substantially perpendicular to the connecting portion 903. The securing portion 901 houses a drive shaft 91 (partially shown) which is mounted rotatably there. A spur gear, not shown, is rotatably connected to the lower end of the drive shaft 91. A housing 910, inside which is placed an RFID tag 92, is provided at the other end of the spindle. 91. A male hexagonal recess 911 is formed at the periphery of the drive shaft 91. This has a shape complementary to that of the hexagonal socket 201 of the output shaft 2. Beads 93, integral with the accessory body 900, are movably mounted in translation inside the wall of the upper end of the securing portion 901 between: a locking position in which they project inside. the hollow housing 94 formed inside the securing portion 901 to accommodate the output shaft 2 and the end of the body portion 11, so as to cooperate, when the output shaft 2 and the end of the 11th portion of co rps are housed in the hollow housing 94, with the groove 15 formed at the end of the body portion 11: the axis return is thus secured to the body by the balls 93 which are housed in the groove 15, and a position in which they are concealed at least partly inside the peripheral wall of the securing portion 901 so as to allow the balls 93 to be dislodged from the groove 15 to allow the uncoupling of the return of axis of the screwdriver. Actuating means make it possible to move the balls 93 from one to the other of their position. These actuating means comprise a ring 95 which is mounted to move in translation along the upper end of the securing position 901. This ring 95 comprises an inner portion of large diameter 951 and an inner portion of smaller diameter 952 which are connected together by a frustoconical portion 953. This ring 95 is movable relative to the securing portion 901 between: a locking position in which the small-diameter portion 952 acts on the balls 93 so as to push them into their locking position in which they project inside the inner housing 94 to come if necessary cooperate with the groove 15 of the output shaft 2 to maintain the integral axis of the screw return, and a release position reached when the ring 95 is translated according to the arrow D, in which the small diameter portion 952 is not facing the balls 93 a when the large-diameter portion 951 is in the extension of the balls 93 so that they can retract inside the securing portion 901 to occupy their release position thus allowing the uncoupling of the return of 'axis. A compression spring 96 interposed between the ring 95 and the securing portion 901 tends to bring the ring 95 into its locking position by exerting on it a return force along the arrow E. The pinion secured to the lower end of the drive shaft 91 meshes with the first gear (not shown) of a cascade of gears (not shown) mounted on parallel axes inside the connecting portion 903. The last of these gears (no shown) is mounted on an output shaft 97 which it is integral in rotation. This output shaft 97 is rotatably mounted in the screwing portion 902. It has at its lower end a screw element 98. 6.2. Operation Two groups of screwing accessories can be secured to the screwdriver: screw-in type accessories, and accessories of the axis return type. 6.2.1. Solidarization of a socket-type accessory i. Bushing The fastening of a screwdriver socket 40 to a screwdriver according to the invention is obtained in the following manner. The ring 30 is moved according to the arrow A in its release position in which its portion of small diameter 31 no longer acts on the balls 14 which are in the extension of its position of large diameter 32. The balls 14 are then free to retract inside the peripheral wall of the output shaft 2. The balls can thus reach a position in which the diameter of the hollow inner housing 200 at the end of the balls turned towards it is high enough to allow insertion of the socket. The accessory body 41 of the bushing 40 is then inserted inside the hollow inner housing 200 of the output shaft 2 by cooperating the male hexagonal recess 42 of the bushing 40 with the hexagonal socket 201 of the output shaft. The output shaft 2 and the sleeve 40 are thus connected in rotation. During this insertion, the accessory body 41 acts on the balls 14 to place them in their release position. The ring 30 is then released so that it is moved along the arrow B under the effect of the spring 34 and thus returned to its locking position. Its small diameter portion 31 then faces the balls 14 on which it acts to place them in their locking position in which they cooperate with the groove 43 formed at the periphery of the accessory body 41 of the sleeve 40. sleeve 40 is thus locked in translation inside the output shaft 2 along its longitudinal axis. The sleeve thus positioned, the RFID tag 46 is facing and close to the reader 9. The control means can thus recognize by means of the reader and the RFID tag the socket secured to the screwdriver and select the screwing strategy adapted programmed in the screwdriver. When the drive means are implemented accordingly, the output shaft 2 is rotated via the transmission including in particular the conical torque. The sleeve 40 is rotated via the output shaft 2. To separate the sleeve 40, the ring 30 is moved to its release position according to the arrow A in which the balls 14 are free to retract inside. of the peripheral wall of the output shaft 2. The sleeve is then moved along the arrow A to be extracted from the hollow inner housing 201. ii. Extension socket The joining of an extension socket 50 to a screwdriver according to the invention is obtained in the following manner. The ring 30 is moved according to the arrow A in its release position in which its portion of small diameter 31 no longer acts on the balls 14 which are in the extension of its portion of large diameter 32. The balls 14 are then free to retract inside the peripheral wall of the output shaft 2. The balls can thus reach a position in which the diameter of the hollow inner housing 200 at the end of the balls turned towards it is high enough to allow insertion of the extension socket. The accessory body 51 of the bushing 50 is then inserted inside the hollow inner housing 200 of the output shaft 2 by cooperating the male hexagonal imprint 55 of the bushing 50 with the hexagonal socket 201 of the output shaft. The output shaft 2 and the extension sleeve 50 are thus connected in rotation. During this insertion, the accessory body 51 acts on the balls 14 to place them in their release position. The ring 30 is then released so that it is moved along the arrow B under the effect of the spring 34 and thus returned to its locking position. Its small diameter portion 31 then faces the balls 14 on which it acts to place them in their locking position in which they cooperate with the groove 56 formed at the periphery of the accessory body 51 of the sleeve 50. sleeve 50 is thus locked in translation inside the output shaft 2 along its longitudinal axis. The extension sleeve 50 thus positioned, the RFID tag 58 is facing and close to the reader 9. The control means can thus recognize by means of the reader and the RFID tag the extension sleeve secured to the screwdriver and select the appropriate tightening strategy programmed in the screwdriver. When the drive means are implemented accordingly, the output shaft 2 is rotated via the transmission including in particular the conical torque. The extension sleeve 50 is rotated via the output shaft 2. To separate the extension sleeve 50, the ring 30 is moved to its release position according to the arrow A in which the balls 14 are free to retract inside the peripheral wall of the output shaft 2. The extension sleeve can then be moved according to the arrow A to be extracted from the hollow inner housing 201. iii. Hold and drive The joining of a hold and drive 80 to a screwdriver according to the invention is obtained in the following manner.
    [0026] The ring 30 is moved according to the arrow A in its release position in which its portion of small diameter 31 no longer acts on the balls 14 which are in the extension of its portion of large diameter 32. The balls 14 are then free to retract inside the peripheral wall of the output shaft 2. The balls can thus reach a position in which the diameter of the hollow inner housing 200 at the end of the balls turned towards it is high enough to allow the insertion of hold and drive. The hold and drive is then inserted inside the hollow inner housing 200 of the output shaft 2 by causing the male hexagonal recess 62 of the axis 6 to cooperate with the hexagonal socket 832, and the hexagonal imprint male 876 with the hexagonal socket 201 of the output shaft. The output shaft 2 and the drive element 87 are thus rotatably connected. The locking elements 81 and 83 are thus locked in rotation by the axis 6. During this insertion, the driving element 87 acts on the balls 14 to place them in their release position. The ring 30 is then released so that it is moved along the arrow B under the effect of the spring 34 and thus returned to its locking position.
    [0027] Its small diameter portion 31 is then opposite the balls 14 on which it acts to place them in their locking position in which they cooperate with the groove 875 formed at the periphery of the second drive element 873. The hold and drive is thus locked in translation inside the output shaft 2 along its longitudinal axis.
    [0028] The hold and drive 80 thus positioned, the RFID tag 84 is facing and close to the reader 9. The control means can thus recognize by means of the reader and the RFID tag the hold and drive secured to the screwdriver and select the appropriate tightening strategy programmed in the screwdriver.
    [0029] When the drive means are implemented accordingly, the output shaft 2 is rotated via the transmission including in particular the conical torque. The drive element 87 is then rotated by the output shaft 2, while the locking elements 81, 83 are held stationary by the axis 6.
    [0030] To separate the hold-and-drive 80, the ring 30 is moved into its release position according to the arrow A in which the balls 14 are free to retract inside the peripheral wall of the output shaft 2. hold and drive can then be moved according to the arrow A to be extracted from the hollow inner housing 201. 6.2.2. Solidarization of an accessory of the axis return type The attachment of an axis 90 to a screwdriver according to the invention is obtained in the following manner. The ring 95 is moved according to the arrow D in its release position in which its small diameter portion 952 no longer acts on the balls 93 which are in the extension of its large diameter portion 951. The balls 93 are then free to to retract inside the peripheral wall of the securing portion 901. The balls can thus reach a position in which the diameter of the hollow inner housing 200 at the end of the balls turned towards it is sufficiently raised to allow the insertion of the body into the axis return. The accessory body 900 of the axle return 90 is then brought closer to the end 11 of the body of the screwdriver so as to insert the end of the latter into the housing 94 by making the hexagonal impression cooperate. male 911 of the drive shaft 91 with the hexagonal socket 201 of the output shaft 2. The output shaft 2 and the drive shaft 91 are thus linked in rotation. The ring 95 is then released so that it is moved according to the arrow E under the effect of the spring 96 and thus returned to its locking position.
    [0031] Its small diameter portion 952 is then facing balls 93 on which it acts to place them in their locking position in which they cooperate with the groove 15 formed at the periphery of the end 11 of the body of the screwdriver. The axle return 90 is thus locked in translation inside the output shaft 2 along its longitudinal axis.
    [0032] The axis return thus positioned, the RFID tag 92 is opposite and close to the reader 9. The control means can thus recognize by means of the reader and the RFID tag the pin return secured to the screwdriver. and select the appropriate tightening strategy programmed in the screwdriver. When the drive means are implemented accordingly, the output shaft 2 is rotated via the transmission including in particular the conical torque. The drive shaft 91 is rotated via the output shaft 2, and the output shaft 97 is rotated via the drive shaft 91 and the gear cascade. In order to separate the axle return 90, the ring 95 is moved into its release position according to the arrow D in which the balls 93 are free to retract inside the peripheral wall of the securing portion 901. Axial return 90 can then be moved according to the arrow D to be extracted from the hollow inner housing 201.
    [0033] It can be observed that when the first securing means are implemented, the second securing means are inactive, and vice versa. 6.3. Information carried and readable in the RFID tag The information carried and readable in the RFID tag may be restricted to a simple identifier, which once recognized by the control means of the screwdriver, allows the activation of the screwing strategy contained in these control means and corresponding to the accessory. Other information is conceivable, including: the number of screwing cycles already made by the accessory and characterizing the state of wear of the accessory. Depending on these the control means of the screwdriver may cause: an alert to the operator on the need for maintenance of the accessory immediate or future. a deactivation of the screwdriver. a screwing strategy specific to the accessory and substituting for a screwing strategy contained in the control means of the screwdriver. other information from either the supplier or the company using the attachment accessory such as the reduction ratio or the transmission efficiency in the case of an axis return. The choice of the type of RFID tag will of course be adapted to the volume of this information.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Screwing system comprising: a screwing device comprising a body (1) at one end of which is mounted an output shaft (2) rotatably mounted, said body (1) housing motor means (100) connected to said output shaft (2) by means of a transmission (3, 4), at least one screwing accessory (40, 50, 80, 90) for cooperating with said output shaft (2) to be rotated, at least one reversible securing means of said at least one screwing accessory (40, 50, 80, 90) to said screw device, means for recognizing said accessory (40, 50, 80, 90) when secured to said device via said means securing means, said recognition means comprising an electronic tag reader (9) integral with said device and an electronic tag (46, 58, 84, 92) secured to said accessory (40, 50, 80, 90), said reader (9 ) and said label (46, 58, 84, 92) being positioned, when ledi t accessory (40, 50, 80, 90) is secured to said device, in the axis of said output shaft (2), said reader (9) being connected to at least one power supply wire and / or data transmission (13), said at least one wire (13) extending in said device in the axis of said output shaft (2).
    [0002]
    2. System according to claim 1, characterized in that said body (1) comprises a first body portion (10) housing said motor means (100) and a second body portion (11) housing said output shaft (2). said second body portion (11) being traversed by at least one hole (120) within which said at least one wire (13) passes, said body (1) and said hole (120) being configured to enable said wire (13) to extend outside said body (1) along said first body portion (10).
    [0003]
    3. System according to claim 1 or 2, characterized in that said transmission comprises at least a first (4) and a second (3) pinion meshing with each other, said second pinion (3) being rotatably connected. at said output shaft (2), said at least one wire (13) extends through said second pinion (3).
    [0004]
    4. System according to claim 3, characterized in that said first (4) and second (3) gears belong to the group comprising: the conical type gears; parallel type gears.
    [0005]
    5. System according to claim 3 or 4, characterized in that said device comprises an axis (6) extending along the axis of rotation of said second pinion (3) and passing therethrough, said axis ( 6) being traversed by a passage (60, 61) within which the at least one wire (13) extends.
    [0006]
    6. System according to claim 5, characterized in that said axis (6) is fixed relative to said body (1).
    [0007]
    7. System according to claim 6, characterized in that said reader (9) is integral with said axis (6).
    [0008]
    8. System according to any one of claims 1 to 7, characterized in that said output shaft (2) comprises an inner hollow housing (200) adapted to receive a securing portion (42, 44, 52, 55, 83 873, 901) of said screw-in accessory (40, 50, 80, 90), said reader (9) extending at the edge of said hollow inner housing (200) such that when said accessory (40, 50, 80, 90) is secured to said device and said accessory securing portion (42, 44, 52, 55, 83, 873, 901) is housed inside said hollow inner housing (200), said label (46, 58 84, 92) and said reader (9) are facing each other.
    [0009]
    9. System according to claim 8, characterized in that said hollow inner housing (200) has a shape complementary to the shape of said securing portion of said screwing accessory (42, 44, 52, 55, 83, 873, 901). said shapes being configured to rotatably couple said output shaft (2) with said screw-in accessory (40, 50, 80, 90).
    [0010]
    10. System according to any one of claims 1 to 9, characterized in that said securing means comprise at least: locking elements (14, 93) movable between a locked position in which they cooperate with said screwing accessory ( 40, 50, 80, 90) or with said device for holding said accessory (40, 50, 80, 90) and said device integral, and a release position in which they do not cooperate with said screwing accessory (40, 50 , 80, 90) or with said device so that said accessory (40, 50, 80, 90) and said device are no longer held together, and actuating means (30, 95) of said locking means, said means actuators (30, 95) being movable between a locking position in which they act on said locking members (14, 93) to place them in their locked position, and a release position in which said locking members e lock can take their release position.
    [0011]
    11. System according to any one of claims 1 to 10, characterized in that said reversible joining means comprise: first reversible securing means of a first group of at least one screwing accessory, and second means of reversible joining of a second group of at least one screwing accessory.
    [0012]
    12. System according to claim 11, characterized in that said first and second securing means are coaxial.
    [0013]
    13. System according to any one of claims 1 to 12, characterized in that said electronic tag (46, 58, 84, 92) contains information belonging to the group comprising: the identifier of said screwing accessory; the parameters of the screwing strategy associated with said screwing accessory; data relating to the maintenance of said screwing accessory; manufacturer and / or user data concerning the screwing device and / or the face accessory.
    [0014]
    14. Device for screwing system according to any one of claims 1 to 13.
    [0015]
    15. A screwdriving accessory for a system according to any one of claims 1 to 13.
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    同族专利:
    公开号 | 公开日
    EP2944425A1|2015-11-18|
    EP2944425B1|2018-06-06|
    FR3020300B1|2017-02-10|
    US20150306747A1|2015-10-29|
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    DE102012017376A1|2012-06-13|2013-12-19|Robert Bosch Gmbh|Electrical propelled tool i.e. rechargeable battery-claimant screw jack, has tool components provided with power supply unit that enables data communication unit to generate power using inductive coupling|
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    法律状态:
    2015-04-28| PLFP| Fee payment|Year of fee payment: 2 |
    2015-10-30| PLSC| Search report ready|Effective date: 20151030 |
    2016-04-26| PLFP| Fee payment|Year of fee payment: 3 |
    2017-04-27| PLFP| Fee payment|Year of fee payment: 4 |
    2018-04-25| PLFP| Fee payment|Year of fee payment: 5 |
    2020-01-10| ST| Notification of lapse|Effective date: 20191206 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1453750A|FR3020300B1|2014-04-25|2014-04-25|SCREW DEVICE HAVING COAXIAL POSITION CONNECTION ATTACHMENT MEANS FOR RECOGNITION|FR1453750A| FR3020300B1|2014-04-25|2014-04-25|SCREW DEVICE HAVING COAXIAL POSITION CONNECTION ATTACHMENT MEANS FOR RECOGNITION|
    EP15164347.5A| EP2944425B1|2014-04-25|2015-04-20|Screwdriver device with means for recognising a driving accessory in coaxial position|
    US14/697,179| US20150306747A1|2014-04-25|2015-04-27|Screw driving device for recognizing screwing accessories in the coaxial position|
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