• 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:
    Link (200n) of rigid chain (100), comprising at least one cheek (1), of generally rectangular shape, of thickness (93, 97) substantially constant perpendicular to its main plane (81). The cheek (1) comprises a first portion (2) and a second portion (4). Each of the parts (2, 4) comprises: - a heel (5) arranged to bear against a corresponding heel of an analogous cheek (1n-1; ln + 1) of a link (200n-1; 200n + 1) adjacent to the rigid chain (100), and - a base (7) arranged to form a bearing about an axis (400) of rotation relative to said adjacent link (200n-1; 200n + 1) . The heel (5) and the base (7) extend respectively on one side and the other of the main plane (81) and parallel to said main plane (81).
    公开号:FR3043747A1
    申请号:FR1560948
    申请日:2015-11-16
    公开日:2017-05-19
    发明作者:Ivan Seigneur；Philippe Novick
    申请人:Serapid - France；
    IPC主号:
    专利说明:

    The invention relates to load displacement chains, referred to as rigid chains, and more particularly to the links used to form such chains.
    Rigid chains, or articulated bars, can move from a folded state in which they occupy a small footprint to a deployed state in the form of a straight and rigid structure capable of towing heavy loads, supporting and pushing them .
    Such chains are formed of a series of similar links, each link comprising two lateral cheeks, sometimes called sidewalls, mounted to rotate from one link to the other by means of rotation axes. The links are arranged so that the chain can move from a rectilinear state to a curved state or wound on itself and vice versa. The chain can be bent in a single plane and in a single direction. Curvatures in other directions and twists are prevented, in particular by a suitable configuration and adjustment of the component parts of the chain.
    In FR 2 134 196, each link piece is made by assembling two different mechanical parts. A first flat piece of complex shape transmits compressive forces from one link to the other when the chain is straight. A second flat piece of oblong shape connects two adjacent axes of rotation and works essentially in tension. The two pieces are assembled against each other by crimping. Sometimes, a manufacturing defect, for example flatness, appears in a room. Such a defect can be tolerable at the scale of the link. In other words, the operation of the chain is not called into question when a link in the chain has a minimal defect. But these parts are usually manufactured in series, batch. When a defect, even minimal, is reproduced on each part of a lot used to form a chain, these defects accumulate along the length of the chain to prevent its proper operation, especially over long lengths. In addition, in case of bending force oriented substantially perpendicular to the sidewalls, crimping and / or flatness of the sidewalls may be degraded until bending of one of the sidewalls and blocking of the chain. FR 2,573,832 shows an embodiment for which a piece of one piece is used to form each cheek of the chain. Such parts are also subject to bending in case of bending force perpendicular to the sidewalls, which limits the conditions of use of the chain. In addition, the length of the chain is limited under penalty of failures due to manufacturing defects on a batch of parts.
    The configuration presented in FR 2 345 626 is simplified: the cheek of the chain consists of a single type of part. For each cheek of the chain, two rows of pieces are superimposed on a quincunx. The chain is also fragile in the case of bending stress oriented perpendicular to the flanks.
    The Applicant has developed rigid chains whose cheeks are made by assembling identical flat parts to each other. Such a configuration is presented in FR 2 786 476. The manufacture of parts and their assembly are facilitated. In this configuration, the superimposition of two identical pieces staggered for each cheek remains necessary. This superposition is difficult to preserve over time, in particular in the case of bending force perpendicular to the plane of the flanks. Play and undesired relative movements appear between the pieces of a side of the chain. Such games can lead to premature wear, see bending of the chain. The invention improves the situation.
    The Applicant proposes a rigid chain link comprising at least one cheek, of generally rectangular shape, of substantially constant thickness perpendicular to its main plane. The cheek includes a first part and a second part. Each of the parts comprises: a heel arranged so as to bear against a corresponding heel of a similar cheek of an adjacent link of the rigid chain, and a base arranged so as to form a bearing around an axis of rotation relative to said adjacent link.
    The heel and the base extend respectively from one side to the other of the main plane and parallel to said main plane.
    Such a rigid chain link makes it possible to ensure the transmission of forces along the main direction of the chain while having a good resistance to bending. The shape of the cheeks leads to an interpenetration from one cheek to the other rather than a simple superposition. By interlocking, the cheeks have improved bending resistance and buckling resistance of the improved chain, regardless of the direction of bending forces applied. Additional reinforcement pieces are superfluous. The manufacture of the cheeks is simple and inexpensive. When assembling into a rigid chain, it is sufficient to juxtapose identical cheeks and reversed orientation of one link on the other. The orientation of each cheek in the assembly is imposed by its shape. An assembly error is impossible. The Applicant has also found that by inverting the orientation of the flank cheek every other time, each manufacturing defect of a cheek, for example its flatness, is overtaken by the defect of the next cheek facing in the opposite direction. In other words, if all the cheeks of a lot have the same defect, then a pair of links whose cheeks are oriented in opposite directions relative to each other may then have a zero defect. The defect of one cheek compensates the defect of the other. Instead of accumulating along the length of the chain, the effects of manufacturing defects on each cheek offset each other. The length of the chain is no longer limited by such manufacturing defects.
    The rigid chain link may have the following optional features, alone or in combination with each other: - the heel of the first part and the heel of the second part both extend on one side of the main plane while the base of the first part and the base of the second part both extend on the opposite side of the main plane. This makes it possible to form links one after the other by arranging the cheeks successively in one direction and the other. The effects of possible manufacturing defects of a lot of cheeks are thus compensated for one link on the other. - The base of the first part and the base of the second part are substantially symmetrical to each other with respect to a transverse plane perpendicular to the main plane. This facilitates the assembly of a link with its neighbor by arranging the cheeks successively in one direction and in the other while reducing the games in operation. - The link carries surfaces arranged substantially in correspondence of shape to cooperate abutting with corresponding surfaces of similar links of the rigid chain. The heel of the first portion and the heel of the second portion being substantially symmetrical to each other with respect to a transverse plane perpendicular to the main plane, the shape of the surfaces arranged to cooperate by abutment. This facilitates the assembly of a link with its neighbor by arranging the cheeks successively in one direction and in the other while reducing the games in operation. In addition, the compression support zones between two links are substantially equidistant from the axes of rotation of said links, which improves the distribution of stresses and resistance to bending. - the cheek is formed in one piece. This makes it possible to limit the risks of fragility of a cheek relative to a connection such as crimping. the heel and the base of at least one of the first portion and of the second portion each have a substantially coplanar face with the main plane. This limits the play and relative movements between the cheeks of two adjacent links. - The cheek further comprises a body, the body connecting the heels and the bases to each other. This improves the strength of a cheek. - The first part and the second part of the cheek each comprise a connecting portion connecting the heel and the base to one another, the connecting portions being formed by folding. This facilitates the manufacture of the cheeks. The connecting portion may for example be formed simultaneously with a cut of the cheek in a blank sheet. a substantially circular hole is formed in the base. A space is provided between the heel and the base, said space being open on a longitudinal end of the workpiece and extending longitudinally towards the opposite longitudinal end to beyond the center of the circular hole. Such a space allows a deep interpenetration of one cheek in the other. A tolerance in the realization of the cheek is allowed without a deformed portion come to hinder the interpenetration. each bead carries a front surface oriented so as to bear against a corresponding surface of said adjacent link. Such a front surface makes it possible to ensure a transmission of forces substantially aligned with the main direction of the chain in the rectilinear state and limits the appearance of bending forces of the cheek. the cheek carries lateral surfaces oriented so as to limit the relative rotation of the link and of said adjacent link by abutting against corresponding surfaces of said adjacent link. The correct alignment of the cheeks relative to each other is well adjusted in the rectilinear portion of the chain. - The cheek further comprises a stud on the same side of the main plane that the bases, the heels having one of said side surfaces, the stud carrying another of said side surfaces, so that the lateral surface of the heel comes into abutment against the corresponding side surface of the nipple of said adjacent link and that the surface of the nipple abuts against the corresponding lateral surface of the heel of said adjacent link. The good rotational adjustment of the cheeks relative to each other is well controlled without the overall thickness of the cheeks is increased.
    According to a second aspect of the invention, the Applicant also proposes a rigid chain formed by the assembly of links as defined above, one after the other, so that the orientation of the cheek of a link is reversed in a thickness direction relative to that of the cheek respectively of the previous link and the next link. Each link is rotatably mounted respectively with the previous link and with the next link via bars slipped into the bases.
    The Applicant also proposes a method of manufacturing a link as defined above comprising the following steps: a) cutting a cheek blank in a sheet blank, and b) shifting the bases relative to the heels in the direction of the thickness and form connecting portions by folding. Other features, details and advantages of the invention will appear on reading the detailed description below, and the attached drawings, in which: - Figure 1 is a view of a chain portion according to the invention; FIG. 2 is a view of the portion of FIG. 1 from an opposite point of view; - Figure 3 shows a perspective view of a cheek of the chain of Figure 1; - Figure 4 shows a perspective view of two identical cheeks before assembly into a rigid chain according to the invention; FIG. 5 shows the partial assembly of the two cheeks of FIG. 4; - Figure 6 shows a top view of the assembly of Figure 5; FIG. 7 shows a front view of the assembly of FIG. 5; - Figures 8 and 9 show views similar to that of Figure 7 of two other embodiments foiled according to the invention; FIG. 10 shows a front view of the assembly of three identical cheeks according to the invention; - Figure 11 shows a perspective view of an assembly of three identical cheeks according to the invention in a curved state of the chain; and - Figure 12 shows a front view of the assembly of Figure 11.
    The drawings and description below contain essentially elements of a certain character. They can therefore not only serve to better understand the present invention but also contribute to its definition where appropriate. It is noted that elements like the geometry of complex cheeks are difficult to completely define, other than by drawing.
    In Figures 1 and 2 a chain is referenced 100. Links 200 of the chain 100 are distinguished from each other by an index 1 to N from a tail link to a head link. Thus, the index n targets a link 200n while the index n + 1 targets the next link 200n + i of the head side of the chain 100. Each plays, or flank, for a link 200 of the chain 100 is referenced 1 .
    Three directions, perpendicular to each other, are symbolized by a three-dimensional coordinate system: the direction x corresponds to the transverse direction, perpendicular to the plane of FIGS. 1 and 2; - The direction corresponds to the thickness direction of the cheeks 1 of the chain 100, the direction of the axes of rotation 400 of the links 200 and the up-down direction of Figure i; the direction z corresponds to the longitudinal direction, to the main direction of the chain 100 in its rectilinear configuration and to the left-right direction of FIG.
    Each link 200n comprises one or more cheeks ln. In the example of Figures 1 and 2, each link 200n comprises a pair of cheeks ln, each of the cheeks ln belonging to a row forming one of the two sides of the chain 100. The two cheeks ln of a link 200n are mounted free in rotation around two common bars 91 extending along the axes of rotation 400. The cheeks ln are fixed in translation around the bars 91, for example here by means of circlips. The chain 100 has a section, perpendicular to its longitudinal direction z, of generally square shape. Alternatively, the chain 100 comprises a single row or more than two rows foiled. In these cases, each link 200n respectively comprises one or more ln cheeks.
    Each row of the chain 100 comprises a succession in staggered quincunx 1. A play ln of a link 200n is at the same time: - rotatably mounted around a first bar 91 common with the piece ln-i of the link 200n-i tail immediately preceding; - aligned longitudinally with the ln-2 piece of the previous tail link 200n-2; - rotatably mounted around a second bar 91 common with the ln + i part of the link 200n + i head immediately following; - aligned longitudinally with the room ln + 2 of the next 200n + 2 head link.
    The parts 1 of the chain 100 are, here, identical. Each piece 1 is generally rectangular in shape and has a length, a width and a thickness. The orientation of each piece 1 in the chain 100 is such that: the width of the piece 1 is oriented in the transverse direction x of the chain 100, the thickness of each piece 1 is oriented in the direction of thickness y, and the length is oriented in the longitudinal direction z of the chain 100.
    In the following figures, the three-dimensional mark represents the orientation of the piece I relative to the chain 100, or of the piece ln when several pieces 1 are shown. Reference is now made to FIG. 3, which represents an isolated cheek 1 of the link 200.
    The cheek 1 has a main plane 81 perpendicular to the y direction of the thickness. The cheek 1 has two longitudinally opposite parts: a first part 2 and a second part 4. The first part 2 and the second part 4 are mutually delimited by a transverse plane 83 perpendicular to the longitudinal direction z and the main plane 81. assembled state into a chain 100, the portion longitudinally of the side of the head of the chain 100 is called the head portion while the other part is called the tail part. Depending on the direction in which the cheek 1 is mounted in the chain 100, the first part 2, on the right in FIG. 1, forms the head part while the second part 4 on the left in FIG. tail, or vice versa.
    In the example described here, the first portion 2 and the second portion 4 of the cheek 1 are symmetrical to one another relative to the transverse plane 83. The transverse plane 83 constitutes a plane of symmetry of the cheek 1 As a variant, the cheek 1 has exceptions to the symmetry with respect to the transverse plane 83.
    The cheek 1 comprises a body 3 in the form of a plate or platinum. The body 3 has a first face 31 and a second face 33 opposite. The first face 31 and the second face 33 are substantially flat and perpendicular to the direction y of thickness. The first face 31 is substantially merged with the main plane 81. The distance between the first face 31 and the second face 33 defines the thickness 93 of the body 3. The thickness 93 is substantially homogeneous in the body 3.
    It is now described a longitudinal half of the cheek 1 corresponding to the first portion 2, to the right of the transverse plane 83 in Figure 1. The other half corresponding to the second portion 4 is deduced by symmetry with respect to the transverse plane 83.
    The first part 2 of the cheek 1 comprises a heel 5 and a base 7. The heel 5 is located on one side of the cheek 1 in the transverse direction x, at the top in FIG. 1, whereas the base 7 is located on the opposite side, bottom in Figure 1.
    The heel 5 here designates a portion of the cheek 1 configured to work in compression and against corresponding parts of other links. The heel 5 is formed in the longitudinal extension of the body 3, at the longitudinal end opposite the transverse plane 83, or distal end. The body 3 and the heel 5 are delimited by a common longitudinal edge 35, at the top in FIG. 1. Here, the longitudinal edge 35 is substantially continuous, plane and perpendicular to the transverse direction x. Alternatively, the longitudinal edge 35 is slightly curved or slightly concave, for example in order to cooperate with a correspondingly shaped guide member during the movement of the chain 100. The longitudinal edge 35 connects the first face 31 and the second face 33 1 to the other and extends over the entire length of the cheek 1. At the longitudinal end of the first portion 2, the heel 5 is delimited by a front surface 55. The front surface 55 also connects the first face 31 and the second face 33 to each other. In addition, the front surface 55 and the longitudinal edge 35 are substantially perpendicular and connected to each other by a fillet. Here, the front surface 55 extends in the transverse direction x over a width less than half the overall width of the cheek 1.
    The front surface 55 is configured to cooperate by shape matching with a corresponding surface of a similar cheek 1. In the assembled and straight state of the chain 100, the front surface 55n of the first portion 2n of the cheek ln 200n of the link cooperates with a front surface 55n + 2 of a second part 4 n + 2 of a cheek 1 n + 2 similar to the cheek ln. The front surfaces 55 cooperate with each other by stop.
    Here, the front surfaces 55 are substantially continuous, flat and perpendicular to the longitudinal direction z. The front surfaces 55 respectively of the first portion 2 and the second portion 4 of the cheek 1 are then strictly symmetrical to one another relative to the transverse plane 83. As a variant, the front surfaces 55 of the first portion 2 and the second part 4 have different shapes from each other but substantially corresponding. For example, one is convex and the other concave. In this case, this is an exception to the symmetrical nature of the cheek 1. The first part 2 and the second part 4 are substantially symmetrical to each other, to the shape of the front surfaces 55 near.
    The heel 5 is delimited, in the transverse direction x opposite the longitudinal edge 35, by a lateral surface 57 and a connecting portion 80. The lateral surface 57 is substantially flat and perpendicular to the transverse direction x, located on the side of the longitudinal end of the first portion 2 and connected to the front surface 55 by a fillet. The connecting portion 80 is formed in the extension of the lateral surface 57 towards the transverse plane 83. The connecting portion 80 is substantially concave and rounded. The connecting portion 80 extends partly around the base 7 and at a distance therefrom. The lateral surface 57 and the connecting portion 80 connect the first face 31 and the second face 33 to one another. The base 7 has a form of generally circular plate portion. The base 7 extends substantially in a plane parallel to the body 3 and the heel 5. The base 7 has a first face 71 and a second face 73 opposite. The first face 71 and the second face 73 are substantially flat and perpendicular to the direction y of thickness. The first face 71 is substantially merged with the main plane 81. The distance between the first face 71 and the second face 73 defines the thickness 97 of the base 7, which is here substantially homogeneous and equal to the thickness 93 of the body 3 and the heel 5. The body 3 and the heel 5 on the one hand and the base 7 on the other hand respectively extend on one side and the other of the main plane 81 and parallel to the main plane 81. The thickness 93 of the body 3 and the heel 5 and the thickness 97 of the base are substantially constant perpendicular to the main plane 81 and equal to one another. The cheek 1 has a substantially constant thickness. The overall thickness of the cheek 1 is substantially equal to twice the thicknesses 93 and 97, which results from the offset of the base 7 relative to the body 3 and the heel 5 in the direction of the thickness y. The base 7 is traversed in the direction of thickness y by a circular hole 75. The bore of the hole 75 is substantially cylindrical and connects the first face 71 and the second face 73 to one another. In operation, the base 7 forms a bearing for the rotation of the cheek 1 about a bar 91 disposed in the hole 75 along one of the axes of rotation 400. The base 7 is connected to the body 3 and the heel 5 by the intermediate of a connecting portion 9. The connecting portion 9 extends through the main plane 81. The connecting portion 9 has a complex shape, in double fold, each of the folds substantially forms a right angle of direction opposite one another, substantially in the shape of "S". The double fold of the connecting portion 9 is generally rounded so that the first face 31 of the body 3 and the heel 5 and the second face 73 of the base 7 are connected to each other substantially continuously. Similarly, the second face 33 of the body 3 and the heel 5 and the first face 71 of the base 7 are connected to each other substantially continuously.
    The body 3 and the base 7 are delimited, in the transverse direction x, by a longitudinal edge 37 opposite the longitudinal edge 35, at bottom in FIG. 1. Here, the longitudinal edge 37 is substantially plane and perpendicular to the transverse direction. x. Alternatively, the longitudinal edge 37 is slightly curved or slightly concave, for example in order to cooperate with a correspondingly shaped guide member during the movement of the chain 100. The longitudinal edge 37 extends from a base 7 to its symmetrical passing through an intermediate portion of the body 3 and connecting portions 9. Unlike the longitudinal edge 35, the longitudinal edge 37 is not rectilinear and has offsets in the direction of thickness y along the body 3, portions link 9 and the bases 7 as can be seen, for example, in FIG. 2. The longitudinal edge 37 connects the first face 31 and the second face 33 of the body 3 to each other, and the first face 71 and the second face 73 of the base 7 to one another. At each of its longitudinal ends, the longitudinal edge 37 is connected substantially continuously to a transverse edge 77. The transverse edge 77 has a substantially cylindrical shape partially surrounding the base 7, more than 180 ° around the hole 75.
    The portion of the base 7 located on the side of the transverse plane 83, or proximal portion, is partially surrounded by the connecting portion 9 which connects to the body 3 while the portion of the base 7 furthest from the transverse plane 83 or distal portion, is free and delimited by the transverse edge 77. A connecting surface 79 defines the longitudinal end of the connecting portion 9. The connecting surface 79 extends substantially perpendicular to the longitudinal direction z. The connecting surface 79 connects to the connecting portion 80.
    In summary, the contour of the cheek 1 is formed successively by: - the longitudinal edge 35 which extends over the entire length of the cheek 1, - the frontal surface 55 of the first part 2, - the lateral surface 57 of the first part 2, - the connecting portion 80 of the first part 2, - the connecting surface 79 of the first part 2, - the transverse edge 77 of the first part 2, - the longitudinal edge 37 which extends from the first part 2 to the second part 4, - the transverse edge 77 of the second part 4, - the connecting surface 79 of the second part 4, - the connecting portion 80 of the second part 4, - the lateral surface 57 of the second part 4, the front surface 55 of the second part 4 connected to the longitudinal edge 35.
    The transverse edge 77, the connecting surface 79 and the connecting portion 80 of the first portion 2, respectively of the second portion 4, together define a space formed between the heel 5 and the base 7. The space is open on a longitudinal end of the cheek 1 and extends partially around the base 7 to the transverse plane 83 longitudinally beyond the center of the hole 75. Here, the space takes the form of a cut. In other words, the connecting surface 79 which delimits the connecting portion 9 of the free space is situated at a distance from the transverse plane 83 which is strictly smaller than the distance separating the axis of rotation 400 from the transverse plane 83. the assembly of two cheeks 1 around a common bar 91, the connecting surfaces 79 of each of the cheeks 1 do not come into contact and a distance between them is preserved, as shown in Figure 7.
    In the example described here, the flange 1 comprises a stud 11. The stud 11 protrudes from the first face 31 of the body 3. The stud 11 thus projects from the same side of the main plane 81 as the bases 7. The stud 11 is, here, substantially centered on the first face 31 and extends through the transverse plane 83.
    Here, the stud 11 has a rectangular section. The stud 11 has a lateral surface 15. The lateral surface 15 is, here, substantially flat, perpendicular to the transverse direction x and oriented towards the longitudinal edge 35, upwards in FIG. 1. The position of the stud 11 relative to the body 3 is selected so that the side surface 15 is substantially coplanar with the lateral surface 57 of the heel 5 and oriented in the opposite direction. Thus, the side surface 15 forms a seat for the side surface 57 of each of the two adjacent cheeks 1 when the chain 100 adopts a straight position. This abutment cooperation is represented for example in FIG.
    The lateral surface 57 of the heel 5 and the lateral surface 15 of the stud 11 are configured so as to cooperate by shape correspondence of a cheek 1 to the other. In the assembled and straight state of the chain 100, the lateral surfaces 57n cooperate respectively with the lateral surfaces 15n-i and 15n + 1. The lateral surface 15n cooperates with one of the lateral surfaces 57n-1 and one of the lateral surfaces 57n + 1. When the chain 100 passes from a curved state to a rectilinear state, the abovementioned surfaces cooperate by abutment so as to stop the relative rotation of the two adjacent cheeks 1 when a rectilinear configuration is reached.
    The second face 33 has a cavity 13, or concavity, corresponding to the pin 11. The impression 13 is the result of the deformation operation of a metal plate to form the pin 11, here to the press. Alternatively, the footprint 13 is absent, for example when the stud 11 is obtained by adding material to the first surface 31, for example by welding or insert by screwing or mechano-assembly.
    The rectangular shape of the stud 11 of the embodiment of FIGS. 3 to 7, in particular the orientation of the lateral surface perpendicular to the direction x, makes it possible to avoid the transmission of compression forces oriented in the z direction of a link 200 to the next.
    In Figure 8, an alternative embodiment of the pin is shown. The stud is referenced 611. The stud 611 has a circular section and is positioned closer to the longitudinal edge 35 than the stud 11 of the embodiment described above. The hollow footprint 613 in the second face 33 is also of circular section. The stud 611 has a lateral surface 615 of substantially cylindrical shape. In this variant, the lateral surface 657 has a shape match with the lateral surface 615, that is to say a substantially cylindrical concave shape, or half-bore. The lateral surface 657 is formed at the end of the bead 5, that is to say formed in the front surface 655. The shape of the lateral surface 657 differs from a strictly circular shape in that it connects at the frontal surface 655 by a leakage leave, tangent to the circle shape. Such leakage relief facilitates the placement of the pin 611 against the side surface 657 during the folding / unfolding of the chain portion 100.
    FIG. 9 shows an alternative embodiment of the stud, referenced 711. The stud 711 also has a circular section and is positioned at the same location of the body 3 as the stud 11 of FIG. 3. The hollow imprint 713 in the second face 33 is also of circular section. The stud 711 has a lateral surface 715 of substantially cylindrical shape. In this variant, the lateral surface 757 also has a shape correspondence, that is to say a quadrant cutting shape. The lateral surface 757 is formed at the angle connecting the front surface 55 and the longitudinal edge corresponding to the lateral surface 57 of the embodiment of FIG. 3.
    In the examples described here, the lateral surfaces 15, 615, 715, 57, 657 and 757 of each of the first portion 2 and the second portion 4 of each cheek 1 are symmetrical in pairs relative to the transverse plane 83. Symmetry of the cheek 1 is strictly respected. Alternatively, the side surfaces of the first portion 2 and the side surfaces of the second portion 4 have asymmetrical configurations. In this case, this is an exception to the symmetrical nature of the cheek 1. The first part 2 and the second part 4 are substantially symmetrical to one another, in the shape of the lateral surfaces 15, 615, 715, 57 , 657 and 757 near.
    Reference is now made to FIGS. 4 to 7. In these figures, the assembly of two cheeks ln and ln + i belonging respectively to two adjacent links of a chain 100 is represented.
    For the assembly operation, the cheeks ln and ln + i are positioned in similar orientations but in opposite directions along the direction y of the thickness.
    In other words, the longitudinal flanks 35n and 35n + 1 are aligned, the longitudinal flanks 37n and 37n + 1 are aligned and the first faces 31n and 31n + 1 are oriented in opposite directions. The main planes 81n and 81n + i are merged. The body 3n and the heels 5n are aligned with the bases 7n + i while the body 3n + i and the heels 5n + i are aligned with the bases 7n. To achieve the assembly and move from the state shown in Figure 4 to that shown in Figures 5, 6 and 7, the cheeks ln and ln + i interpenetrate by a movement of approximation in the common longitudinal direction z. In the final position, the hole 75n of the second part 4n is aligned with the hole 75n + i of the second part 4n + i so that the bar 91 can be threaded in by defining the axis of rotation 400.
    For each cheek 1, the interpenetration assembly, first faces 31 and 71 against first faces 31 and 71, leads to form a staggered row. By alternating the direction of the cheeks 1 of a link 200 to the other, the first parts 2 are superimposed with first parts 2 while the second parts 4 are superimposed with second parts 4 in the transverse direction y. The side surfaces 15, 615, 715, 57, 657, 757 of the first parts 2 on the one hand and the second parts 4 on the other hand can therefore be different and incompatible. In this case, this is an exception to the symmetrical nature of the cheek 1. The first part 2 and the second part 4 are substantially symmetrical to one another, in the shape of the lateral surfaces 15, 615, 715, 57 , 657 and 757 near. The front surfaces 55 of the first parts 2 and the front surfaces 55 of the second parts 4 bear against each other. They are compatible with each other. The thickness of the assembly of the cheeks ln and ln + i then corresponds to the overall thickness of a cheek 1, that is to say twice the thickness 93 of the body 3. The assembly of two cheeks ln and ln + i form an elementary pattern reproduced as many times as necessary to form a chain 100 of the desired length.
    In Figure 10, the cheek ln is assembled on one side to the cheek ln + i, and the opposite side to a cheek ln-i. The chain portion 100 which passes from a curved configuration as shown in FIGS. 11 and 12 to a rectilinear configuration as represented in FIG. 10 can not bend in the opposite direction thanks to the abutment of the lateral surfaces 15 and 57 corresponding three cheeks 1. The side surfaces 15, 57 then form abutment surfaces. In Figures 10, 11 and 12, the bars 91 forming axis of rotation 400 are not shown.
    During a deployment operation of the chain 100, the latter gradually moves from a wound configuration, or at least curved, to a rectilinear configuration to work in compression in the longitudinal direction z and push a movable element and / or in traction through the bars 91 arranged in the holes 75. During its deployment, the chain 100 is driven by a motor member. The chain portions 100, the links 200, pass one after the other in at least one guide zone. The guide zone, for example a set of rails, forces the flanges 1 to rotate relative to each other to adopt a rectilinear configuration, for example to move from the state shown in FIGS. 11 and 12 to that represented in FIG. .
    The cheeks 1 are then aligned on two layers which correspond to the double thickness. In other words, a first layer is formed by putting end to end cheeks ln-4, ln-2, ln, ln + 2, ln + 4, etc. while the second layer is formed by putting the cheeks ln-3, ln-i, ln + i, ln + 3, etc., end to end. The front surfaces 55n-i and 55n + i bear against each other. Thus, the cheeks 1 are pushed two by two against each other as and when deployment and through their respective front surfaces 55 which then form bearing surfaces. The links of the chain 100 work in compression in the longitudinal direction z. At the scale of the chain 100, the compression forces are distributed in two sections perpendicular to the main direction z of the chain 100 in the rectilinear state, the two sections corresponding substantially to twice that of the front surface 55.
    In first applications, the chain 100 is designed to work in a direction inclined relative to the horizontal or the horizontal. In this case, the longitudinal direction z corresponds to this direction of work. For example, the chain 100 is used to convey large masses. The weight of the chain 100 is generally too high for the chain 100 to withstand bending, an involuntary curvature, under its own weight. External supports are necessary, especially for working on important races. The straight portion of the chain 100 then rests on suitable structures and relative to which it moves in translation. In this case, the presence of pins 11, 611, 711 and cooperation with the side surfaces 57, 657, 757 may be superfluous. Nevertheless, the cooperation between pin 11, 611, 711 and lateral surfaces 57, 657, 757 improves the maintenance of good alignment of the links of the chain 100.
    In second applications, the chain 100 is designed to work substantially vertically. In this case, the longitudinal direction z corresponds to the vertical direction. For example, the chain 100 is used to lift a platform of a freight elevator. The weight of the platform, of the articles it supports and / or of the chain 100 itself may be sufficient to maintain a high compressive force in the longitudinal direction z in the vertical portion of the chain 100. In this case, the The presence of nipples 11, 611, 711 and the cooperation between the lateral surfaces 15, 57, 615, 657, 715, 757 may be superfluous. Alternatively, guides accompany the movement of the chain 100 along at least part of its vertical stroke so as to prevent buckling phenomena and accidental curvature of the chain 100. For example, rails are arranged so that in sliding contact with the longitudinal edge 35 and / or the longitudinal edge 37 of the cheeks 1. When nipples 11, 611, 711 are provided, their cooperation with the respective lateral surfaces 57, 657, 757 improves the maintenance of the chain 100 in a straight configuration.
    During a storage operation of the chain 100, the direction of movement is reversed with respect to the deployment operation. The chain 100 can then work in tension, through the bases 7 and bars 91 which pass through.
    A chain 100 formed by the assembly of cheeks 1 one after the other by means of bars 91 disposed in the bearings formed by the bases 7 is functional. Nevertheless, when the races are long and the high loads, such a chain 100 tends to be sensitive to buckling and bending in the transverse direction y. In particular, the connecting portions 9 of the cheeks 1 can be deformed, which can lead to make the chain 100 unusable. To limit these risks, the chain 100 can be guided over a large part of its course to prevent unwanted movements. The chain 100 can also be split as shown in FIGS. 1 and 2. Each link then comprises two similar cheeks 1 connected by bars 91 defining common axes of rotation 400 passing through the bases 7. The chain 100 then has a section transverse shape substantially square rather than flattened. The strength and resistance to bending are improved. The chain 100 has two rows of cheeks 1, each row being composed of two layers staggered and interpenetrating. Alternatively, each link may comprise more than two similar cheeks and interconnected by bars.
    In the configuration shown in Figures 1 and 2, the pairs of cheeks 1 of the same link 200 are mounted symmetrically with respect to a plane perpendicular to the transverse direction y. Alternatively, the pairs may be asymmetrically mounted.
    In the example described here, the cheeks 1 are made from a sheet metal blank. The cheeks 1 are monoblocks. The cheeks 1 are devoid of external fixation type rivets, screws or nuts or attachment by seal type welding or solder. As a variant, the flange 1 may be formed in one piece, for example by welding two one-piece pieces.
    The manufacturing method can be decomposed according to the following steps: a) to cut a blank of cheek 1 in a blank of sheet metal, b) to offset the bases 7 with respect to the heels 5 in the direction of the thickness and to form the connecting portions 9 connecting the heel 5 to the base 7 by folding, for example a double folding or squelching.
    Here, the method further comprises the following additional steps: c) flattening and paralleling the body 3 and the heels 5 on the one hand, and the bases 7 on the other hand, d) finishing at least some of the functional surfaces, such as than those of the heels 5, the pin 11 and the holes 75.
    During the step a) of trimming, the contour of the cheek 1 as defined above is cut. In addition, the holes 75 are also recessed and the stud 11 is formed. At the end of the trimming step, the foiled blank 1, or platen, remains substantially flat, plate-shaped. During step b), the formation of the connecting portions 9 passes the cheek blank 1 to its final or almost definitive form. The thickness of the blank cheek 1 goes from the thickness of the starting sheet to an overall thickness substantially equal to twice, that is to say the sum of the thickness 93 of the body 3 and the heels 5 and the thickness 97 of the bases 7.
    Alternatively, the cheek 1 is manufactured, at least in part, by machining in the mass. A blank substantially equal in thickness to the desired overall thickness of the cheek 1 can undergo successive operations of removal of material to obtain the cheek 1. The offset cheek 1 can also be obtained by welding or mechano-assembly two rooms.
    Alternatively, the cheek 1 is made of non-metallic material, for example plastic. The cheek 1 may for example be made by injection. The invention is not limited to the examples of rigid chain links and rigid chains described above, only by way of example, but it encompasses all the variants that can be envisaged by those skilled in the art in the context of claims below.
    权利要求:
    Claims (14)
    [1" id="c-fr-0001]
    claims
    1. Link (200n) of rigid chain (100), comprising at least one cheek (1), of generally rectangular shape, of thickness (93, 97) substantially constant perpendicular to its main plane (81), the cheek (1) ) comprising a first portion (2) and a second portion (4), each of the portions (2, 4) comprising: - a heel (5) arranged to bear against a corresponding heel of a similar cheek (ln -i; ln + i) of a link (200n-i; 200n + i) adjacent to the rigid chain (100), and - a base (7) arranged to form a bearing about an axis (400) rotational with respect to said adjacent link (200n-i; 200n + i), the heel (5) and the base (7) extending respectively from one side to the other of the main plane (81) and in parallel audit principal plan (81).
    [2" id="c-fr-0002]
    2. Link (200n) according to claim 1, wherein the heel (5) of the first part (2) and the heel (5) of the second part (4) both extend on one side of the main plane (81) while the base (7) of the first part (2) and the base (7) of the second part (4) both extend on the opposite side of the main plane (81).
    [3" id="c-fr-0003]
    3. Link (200n) according to one of the preceding claims, wherein the base (7) of the first portion (2) and the base (7) of the second portion (4) are substantially symmetrical one. the other relative to a transverse plane (83) perpendicular to the main plane (81).
    [4" id="c-fr-0004]
    4. Link (200n) according to one of the preceding claims, carrying surfaces (55, 15, 615, 715, 57, 657, 757) arranged substantially in correspondence of shape to cooperate by abutment with corresponding surfaces of similar links ( 200n-2, 200n-i, 200n + 1, 200n + 2) of the rigid chain (100), the heel (5) of the first part (2) and the heel (5) of the second part (4) being substantially symmetrical to each other with respect to a transverse plane (83) perpendicular to the main plane (81), to the shape of the surfaces (55, 15, 615, 715, 57, 657, 757) arranged to cooperate by stop near.
    [5" id="c-fr-0005]
    5. Link (200n) according to one of the preceding claims, wherein the cheek (1) is formed integrally.
    [6" id="c-fr-0006]
    6. Link (200n) according to one of the preceding claims, wherein the heel (5) and the base (7) of at least one of the first portion (2) and the second portion (4) have each one face (31; 71) substantially coplanar with the main plane (81).
    [7" id="c-fr-0007]
    7. Link (200n) according to one of the preceding claims, wherein the cheek (1) further comprises a body (3), the body (3) connecting the heels (5) and the bases (7) to each other. other.
    [8" id="c-fr-0008]
    8. Link (200n) according to one of the preceding claims, wherein the first portion (2) and the second portion (4) of the cheek (1) each comprise a connecting portion (9) connecting the heel (5). and the base (7) to each other, the connecting portions (9) being formed by folding the sheet blank.
    [9" id="c-fr-0009]
    9. Link (200n) according to one of the preceding claims, wherein a substantially circular hole (75) is formed in the base (7), a space (77, 79, 80) being formed between the heel (5). and the base (7), said gap (77, 79, 80) being open on a longitudinal end of the workpiece (1) and extending longitudinally towards the opposite longitudinal end to beyond the center of the hole ( 75) circular.
    [10" id="c-fr-0010]
    10. Link (200n) according to one of the preceding claims, wherein each heel (5) carries a front surface (55) oriented so as to bear against a corresponding surface of said link (200n-i; 200n + i) adjacent.
    [11" id="c-fr-0011]
    11. Link (200n) according to one of the preceding claims, wherein the cheek (1) carries side surfaces (57, 657, 757, 15, 615, 715) oriented to limit the relative rotation of the link (200n). ) and said link (200n-i; 200n + i) adjacent abutting against corresponding surfaces of said adjacent link (200n-i; 200n + i).
    [12" id="c-fr-0012]
    12. Link (200n) according to claim 11, wherein the cheek (1) further comprises a stud (11; 611; 711) on the same side of the main plane (81) that the bases (7), the heels (5). ) having one of said side surfaces (57, 657, 757), the stud (11; 611; 711) carrying another of said side surfaces (15; 615; 715), so that the lateral surface (57; 657; 757) of the heel (5) abuts against the corresponding lateral surface of the nipple of said adjacent link (200n-i; 200n + i) and that the surface (15; 615; 715) of the nipple (11; 611; 711) comes abutting against the corresponding lateral surface of the heel of said adjacent link (200n-i; 200n + i).
    [13" id="c-fr-0013]
    13. A rigid chain (100) formed by the assembly of links (200n-i, 200n, 200n + i) according to one of the preceding claims, one after the other, so that the orientation of the cheek (1) of a link (200n,) is reversed in a direction of thickness relative to that of the cheek (1) respectively of the preceding link (200n-1) and the next link (200n + 1), each link (200n,) being rotatably mounted respectively with the preceding link (200n-i) and with the next link (200n + i) by means of bars (91) threaded into the bases (7).
    [14" id="c-fr-0014]
    14. A method of manufacturing a link (200n) according to one of claims 1 to 13 comprising the following steps: a) cut a cheek blank (1) in a sheet blank, and b) offset the bases (7). ) with respect to the heels (5) in the direction of the thickness and form connecting portions (9) connecting a heel (5) and a base (7) by folding.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3377786A1|2018-09-26|Rigid chain link and rigid chain equipped with such a link
    EP1564141B1|2007-08-01|Aircraft seat rail and its production method
    EP1407125B1|2007-01-10|Variable cylinder capacity engine
    EP2152124B1|2012-10-24|Elastic suspension member of plastic material and of the spring or ball and socket type or the like for bed base, mattress or seat
    FR3066087B1|2019-07-05|ADJUSTABLE STIFFENER ELEMENT FOR SLEEP OR SEAT FURNITURE
    FR2635077A1|1990-02-09|SELF-MOTORIZED ARTICULATION, WITHOUT FRICTION, AND ARTICULATED ASSEMBLY SUCH AS A SOLAR SATELLITE PANEL EQUIPPED WITH SUCH ARTICULATIONS
    FR2954240A1|2011-06-24|Eccentric articulation liner i.e. backrest articulation liner, for seat adjusting device of motor vehicle, has handling zone for plating blocking tooth against collar such that tooth is pre-stressed to engage with notches
    EP3208666B1|2018-11-21|Clock wheel with backlash compensation
    FR2909195A1|2008-05-30|ADJUSTING DEVICE IN A MOTOR VEHICLE INCLUDING AN ADJUSTABLE ADJUSTING PART
    WO2013021142A1|2013-02-14|Device for shaping a metal sheet by die forging
    CH700556A2|2010-09-15|bending press for bending sheets.
    EP3063418A1|2016-09-07|Connecting assembly using a stop ring for a length of shaft. method of mounting such a connecting assembly
    FR3040053A1|2017-02-17|DYNAMIC ANCHOR FOR LIFTING A BUILDING ELEMENT, REINFORCED
    EP2492435B1|2016-02-10|Frame in form of a kit for a fixed, hinged or sliding leaf for a gate or similar
    FR2480633A1|1981-10-23|SEGMENTED MATRIX, IN PARTICULAR FOR THE MATRIXING OF METALS, METHOD OF MANUFACTURING SUCH MATRIX, AND METHOD OF MANUFACTURING ROD HEAD HAT COMPRISING THE USE OF SUCH A MATRIX
    EP1467835B1|2006-08-23|Struture for the maintaining of a car body part
    EP2380455B1|2013-03-20|Bracelet with articulated links
    CH712143A2|2017-08-31|Watch wheel with play catch-up.
    CA2596676C|2013-04-16|Complementary locking system for locking legs to the deck of an offshore drilling platform and methods of installing one such locking system
    WO2008028703A2|2008-03-13|Link for quick-assembly chain and corresponding chain designed for use in horology
    EP3299246B1|2020-11-04|A body structure of a railway vehicle
    EP3507431A1|2019-07-10|Reinforced dynamic lifting anchor for lifting, turning over a building element.
    EP1136011B1|2005-04-13|Articulated bracelet having limited flexibility
    FR2795474A1|2000-12-29|Link plate for chain drive for distribution systems in engines for motor vehicles is provided with two drillings aligned in longitudinal direction for receiving shaft or dowel
    CH614360A5|1979-11-30|Method for manufacturing a bracelet and bracelet obtained by this method
    同族专利:
    公开号 | 公开日
    FR3043747B1|2017-12-22|
    JP2018536131A|2018-12-06|
    AU2016356909B2|2020-12-24|
    US20190264777A1|2019-08-29|
    WO2017085389A1|2017-05-26|
    AU2016356909A1|2018-06-07|
    CA3003918A1|2017-05-26|
    CN108884910A|2018-11-23|
    EP3377786A1|2018-09-26|
    KR20180093942A|2018-08-22|
    US10378611B2|2019-08-13|
    CN108884910B|2021-03-23|
    US20180372185A1|2018-12-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE642350A|
    US2219125A|1939-09-05|1940-10-22|Morse Chain Co|Transmission chain|
    AU2010212303B2|2009-09-30|2015-06-25|Azuma Design Pty Limited|A chain|WO2019077254A1|2017-10-17|2019-04-25|Serapid - France|Thrust lifting device|
    FR3082762A1|2018-06-25|2019-12-27|Serapid - France|INTERVENTION DEVICE IN A SPEAKER|FR2134196B1|1971-04-26|1975-04-18|Haut Rhin Manufacture Machines|
    GB1534726A|1976-03-23|1978-12-06|Teleflex Morse Ltd|Chains|
    FR2573832B1|1984-11-23|1991-10-04|Serapid France|PUSH CHAIN|
    IT222350Z2|1990-11-06|1995-02-17|Ultraflex Srl|SERVOMECHANICAL CHAIN ACTUATOR FOR CLOSING AND OPENING WINDOWS|
    FR2786476B1|1998-11-30|2001-02-23|Serapid France|LOAD LIFT COLUMN|
    CN1219147C|2002-11-06|2005-09-14|董祥义|New-type chain and its application|
    JP4662507B1|2009-11-05|2011-03-30|株式会社椿本チエイン|Meshing chain|
    US8336286B2|2010-02-10|2012-12-25|Prince Castle LLC|Push chain with a bias spring to prevent buckling|
    CN204025533U|2014-08-02|2014-12-17|徐光昕|The chain module unit part of Transmitted chains post|TW201946354A|2018-04-26|2019-12-01|和碩聯合科技股份有限公司|Telescopic adjuster|
    法律状态:
    2016-11-21| PLFP| Fee payment|Year of fee payment: 2 |
    2017-05-19| PLSC| Publication of the preliminary search report|Effective date: 20170519 |
    2017-11-24| PLFP| Fee payment|Year of fee payment: 3 |
    2019-11-26| PLFP| Fee payment|Year of fee payment: 5 |
    2020-11-19| PLFP| Fee payment|Year of fee payment: 6 |
    2021-11-29| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1560948A|FR3043747B1|2015-11-16|2015-11-16|RIGID CHAIN LINK AND RIGID CHAIN EQUIPPED WITH SUCH LINK|FR1560948A| FR3043747B1|2015-11-16|2015-11-16|RIGID CHAIN LINK AND RIGID CHAIN EQUIPPED WITH SUCH LINK|
    JP2018544433A| JP7037491B2|2015-11-16|2016-11-15|Manufacturing method of rigid chain and link of rigid chain|
    CA3003918A| CA3003918A1|2015-11-16|2016-11-15|Rigid chain link and rigid chain equipped with such a link|
    PCT/FR2016/052953| WO2017085389A1|2015-11-16|2016-11-15|Rigid chain link and rigid chain equipped with such a link|
    AU2016356909A| AU2016356909B2|2015-11-16|2016-11-15|Rigid chain link and rigid chain equipped with such a link|
    CN201680076503.4A| CN108884910B|2015-11-16|2016-11-15|Rigid chain link and rigid chain equipped with such a link|
    EP16809495.1A| EP3377786A1|2015-11-16|2016-11-15|Rigid chain link and rigid chain equipped with such a link|
    KR1020187016997A| KR20180093942A|2015-11-16|2016-11-15|Rigid chain links and rigid chains with these links|
    US15/776,320| US10378611B2|2015-11-16|2016-11-15|Rigid chain link and rigid chain equipped with such a link|
    US16/405,501| US20190264777A1|2015-11-16|2019-05-07|Rigid chain link and rigid chain equipped with such a link|
    [返回顶部]