JP4751423B2 - Spring lamination mechanism - Google Patents

Description

  The present invention relates to a spring laminating mechanism that can be used by laminating a plurality of springs between a first member and a second member, and more particularly to a fixing technique using a spring laminating mechanism.

  In various fields such as the automobile industry, precision equipment industry, and home appliances, vibration transmission suppression technology is required. Specifically, vibration transmission suppression technology is applied to an engine, a motor that rotates at high speed, and a dehydration tank of a washing machine. As a technique for suppressing vibration transmission, it is effective to set the natural frequency of a system composed of an object and a support sufficiently lower than a predetermined frequency band. As a method for this, it is conceivable to reduce the spring constant of the support portion. In this case, however, there is a problem that if the spring constant is reduced, the amount of deflection becomes large and the spring becomes large.

  Therefore, a method has been proposed in which a disc spring is interposed between the object and the support portion. With the load characteristic of the disc spring, a flat region can be obtained in which the load can be supported and the spring constant can be set small. Such a disc spring is often used in a mechanism for supporting a large load of a chuck portion of a machining center or a bridge girder.

  By the way, when a large displacement is input from the object when a disc spring is used in a system that supports a large load, a plurality of disc springs are used in an overlapping manner in order to lengthen the stroke. However, in this case, the disc springs are not fixed to each other because their outer peripheral portions move when a load is applied. For this reason, it is necessary to measure the amount of misalignment when the disc springs are aligned with each other, or it is necessary to provide a guide member in the hole or outer peripheral portion of the central portion of the disc spring (for example, Patent Documents 1 and 2). ). Further, when an external force is applied to the surface where the disc springs are overlapped with each other from other than the axial direction, there is a possibility that an axial deviation occurs.

  When the springs other than the disc springs are used in a stacked manner, the springs are not fixed to each other, and the guide member is used in the same manner as the disc springs. Further, in the case of a spring that is not used in the first place such as a mesh spring, there is no technique for fixing the springs.

JP 2000-34847 A JP 2002-55117 A

  Therefore, according to the present invention, when the springs are used in an overlapping manner, the effort is not required and the shafts can be aligned with each other without increasing the number of parts, and the shaft by an external force applied from other than the axial direction is used. An object of the present invention is to provide a spring laminating mechanism capable of preventing the occurrence of deviation.

  The spring laminating mechanism of the present invention is a spring laminating mechanism that can be used by laminating a plurality of springs between a first member and a second member. Provided with a cylindrical portion formed so as to protrude toward the counterpart spring and a laminated portion formed on the end surface of the cylindrical portion and having a concave portion and a convex portion. It is characterized by being fitted to the laminated portion of the cylindrical portion of the spring.

  In the spring laminating mechanism of the present invention, a laminating portion having a concave portion and a convex portion is formed on the end surface of the cylindrical portion of the surface of the main body portion of the spring on which the mating spring is superimposed, and the laminating portion is used as the cylinder of the mating spring. The stacked springs can be fixed to each other by fitting with the laminated portion of the shaped portions. As described above, the fixing of the springs does not require the trouble of measuring the amount of axial deviation, and does not use other members, so that the springs can be easily aligned without increasing the number of parts. . Further, by fixing the springs, when an external force is applied from a direction other than the axial direction, it is possible to prevent the occurrence of axial misalignment in the circumferential direction or the radial direction. The effects as described above can be obtained with a simple configuration in which a laminated portion having a concave portion and a convex portion is formed in the cylindrical portion of the spring itself.

  Various configurations can be used for the spring laminating mechanism of the present invention. For example, it is preferable that the cylindrical portion is a cylindrical portion, the concave portions and the convex portions of the laminated portion have the same circumferential length, and a plurality of pairs of concave portions and convex portions are periodically formed. . In this aspect, when the stacked portions of the springs are fitted, one spring can be overlapped with the other spring with the phase shifted by a half period around the axis. Therefore, since the shape of the laminated part of all the springs can be made the same, only one type of spring needs to be manufactured, and as a result, the manufacturing cost can be reduced.

  Moreover, a laminated part can be joined with the laminated part of the cylindrical part of the other spring. In this aspect, the springs can be reliably fixed. Further, since the springs are fixed by fitting the laminated portions at the time of such joining, the joining can be performed with high accuracy, and as a result, the accuracy of the alignment can be further improved.

  Various shapes can be used for the spring stacking mechanism. For example, the main body portion of the spring can be formed into a cylindrical shape having the same cross-sectional shape as the cylindrical portion, and in this case, the spring can be formed integrally. Moreover, it can be set as the cylindrical spring which has a mesh.

  Moreover, even if the pressing force from a 1st member and a 2nd member changes, the structure which does not shift | deviate to a direction perpendicular | vertical to an axial direction can be used for a lamination | stacking part. Specifically, the main body extends in a direction intersecting the direction of the pressing force from the first member and the second member, and is applied to a spring having a hole. It is formed in at least one of the peripheral portion and the outer peripheral portion, and a corner portion is formed at the boundary portion between the main body portion and the cylindrical portion, and the corner portion changes its angle according to the pressing force. It is preferably elastically deformable. In this case, when the cylindrical part is formed in the inner peripheral part of a main-body part, the cylindrical parts of the inner peripheral part contact | abut, and a mutual lamination | stacking part fits. When the cylindrical part is formed in the outer peripheral part of the main-body part, the cylindrical parts of the outer peripheral part contact | abut, and a mutual lamination | stacking part fits.

  In the above aspect, the main body portion of the spring extends in a direction crossing the direction of the pressing force from the counterpart spring (that is, a direction crossing the direction of the pressing force from the first member and the second member), and the cylinder The protruding portion protrudes from the peripheral portion of the main body portion toward the cylindrical portion of the counterpart spring (that is, in the direction of the pressing force from the first member and the second member), and the stacked portions are fitted to each other. .

  When applied to a spring that contacts the first member or the second member, a cylindrical portion is formed on the surface of the main body of the spring on the side of the mating member, and the cylindrical portion on the side of the mating member faces the mating member. It is preferable that the contact member has a contact portion that protrudes and contacts therewith, and the counterpart member is provided with a stopper that prevents the contact portion from sliding relative to the counterpart member. In this aspect, the spring and the mating member can be fixed.

  Various configurations can be used for the stopper. For example, the contact portion is formed with a laminated portion having a concave portion and a convex portion, and the mating member is formed with an uneven portion that fits into the laminated portion, and the contact portion is laminated with the uneven portion of the counterpart member. Can have a function as a stopper. In this aspect, not only the number of parts can be reduced, but also the laminated portion for fixing the springs can be used, so that the manufacturing cost can be reduced.

  According to the spring laminating mechanism of the present invention, it is possible to easily align the springs without increasing the number of parts, and to prevent the occurrence of axial misalignment due to an external force applied from other than the axial direction. it can. Such an effect can be obtained with a simple configuration in which a laminated portion having a concave portion and a convex portion is formed in the cylindrical portion of the spring itself.

(1) Configuration of Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which springs 1 to 3 to which a stacking mechanism according to an embodiment of the present invention is applied are overlapped and installed between a first member 101 and a second member 102. 2A and 2B show a configuration of the spring 1, in which FIG. 2A is a perspective view and FIG. 2B is a side sectional view of a right side portion of the spring 1. FIG. 3 shows the configuration of the stacking mechanism of the spring 1 of FIG. 2, (A) is a top view of the first tubular portion 11 of the spring 1, and (B) is a bottom view of the second tubular portion 12 of the spring 1. It is.

  The spring 1 disposed in the central portion between the first member 101 and the second member 102 is a basic type of the spring of the present invention. The spring 1 includes, for example, a main body 10 having a hole 10A formed at the center. The main body 10 is, for example, a conical portion that extends in a direction that intersects the direction of the pressing force from the first member 101 and the second member 102. The conical part inclines as it goes downward, for example, and has a function as a disc spring. The hole 10A has, for example, a circular shape.

  A first cylindrical portion 11 (tubular portion) that protrudes toward the spring 2 is provided on the inner peripheral portion of the main body portion 10 of the spring 1. On the end surface of the first cylindrical portion 11, a laminated portion 12 having a concave portion 12A and a convex portion 12B is formed. As shown in FIG. 3A, the recesses 12A and the protrusions 12B preferably have the same circumferential length l1 and a plurality of pairs of the recesses 12A and the protrusions 12B are periodically formed. is there. FIG. 3A shows an example in which two sets of recesses 12A and projections 12B (for two cycles) are formed.

  A second cylindrical portion 13 (cylindrical portion) that protrudes toward the spring 3 is provided on the outer peripheral portion of the main body portion 10 of the spring 1. On the end surface of the second cylindrical portion 13, a laminated portion 14 having a concave portion 14A and a convex portion 14B is formed. As shown in FIG. 3B, the recess 14A and the protrusion 14B are preferably equal in circumferential length l2, and a plurality of pairs of the recess 14A and the protrusion 14B are periodically formed. is there. FIG. 3A shows an example in which two sets of recesses 12A and projections 12B are formed (for two cycles).

  In the laminated parts 12 and 14 formed in the same number periodically in the first cylindrical part 11 and the second cylindrical part 13, their phases are shifted from each other by a half period.

  As shown in FIG. 2B, a first corner 15 is formed at the boundary between the main body 10 and the first cylindrical portion 11, and at the boundary between the main body 10 and the second cylindrical portion 12. A second corner portion 16 is formed. The first corner portion 15 and the second corner portion 16 can be elastically deformed so as to change their angles according to the pressing force from the first member 101 and the second member 102. The first corner 15 and the second corner 16 can be formed by various methods. The first corner 15 and the second corner 16 can be formed, for example, by bending the boundary between the main body 10 and the first cylindrical portion 11 and the boundary between the main body 10 and the second cylindrical portion 13. For example, it can be formed by welding the main body 10 and the first cylindrical portion 11 and welding the main body 10 and the second cylindrical portion 13.

  The spring 2 disposed on the second member 102 side of the spring 1 has the same configuration as the spring 1 except that the second cylindrical portion 13 does not have the laminated portion 14. That is, the first cylindrical portion 11 of the spring 2 has the laminated portion 12, and the second cylindrical portion 13 of the spring 2 does not have the laminated portion 14. In the superposition of the spring 2 and the spring 1, the stacked portions 14 are fitted to each other, so that the springs 1 and 2 are fixed to each other. The end surface of the second cylindrical portion 13 of the spring 2 is a flat surface and is in contact with the second member 102.

  The spring 3 disposed on the first member 101 side of the spring 1 has the same configuration as the spring 1 except that the first cylindrical portion 11 does not have the laminated portion 12. That is, the first cylindrical portion 11 of the spring 3 does not have the stacked portion 12, and the second cylindrical portion 13 of the spring 3 has the stacked portion 14. In the superposition of the spring 3 with respect to the spring 1, the stacked portions 14 are fitted to each other, so that the springs 1 and 3 are fixed to each other. The end surface of the first cylindrical portion 11 of the spring 3 is a flat surface and is in contact with the first member 101.

  It is preferable that the stacked portions 12 and 14 fitted to each other (particularly, the stacked portions 14 having a small diameter) are joined.

  The stacked portions 12 and 14 are preferably formed in the undeformed portions of the first cylindrical portion 11 and the second cylindrical portion 13. FIG. 4 is a diagram for explaining the undeformed portions of the first cylindrical portion 11 and the second cylindrical portion 13. Since the springs 1 to 3 perform the same operation as the spring P that does not have the stacked portions 12 and 14 in the first cylindrical portion 11 and the second cylindrical portion 13, in the description of the operation, the spring A case in which P is disposed between the first member 101 and the second member 102 is used. 4A is a side cross-sectional view of the spring P before operation (dotted line) and during operation (solid line), and FIG. 4B is a diagram illustrating the first corner portion 15 and the second corner portion 16 when the spring P operates. FIG. In FIG. 4, only the right side portion of the spring P is illustrated.

  As indicated by a dotted line in FIG. 4A, a downward load is applied from the first member 101 to the spring P disposed between the first member 101 and the second member 102. Then, as shown by the solid line in FIG. 4B, the spring P bends and the first member 101 moves downward. The symbol d in the figure indicates the amount of bending of the spring P.

  Here, the main body portion 10 extends in a direction crossing the direction of the pressing force from the first member 101, and on the upper side of the spring P, the first cylindrical portion 11 is first from the inner peripheral portion of the main body portion 10. It protrudes toward the member 101 and abuts there. The first corner portion 15 formed at the boundary between the main body portion 10 and the first cylindrical portion 11 is elastically deformed so that the angle α changes according to the pressing force from the first member 101 when a load is applied. Can do. In this case, since the first corner 15 is a part formed at the boundary between the main body 10 and the first cylindrical portion 11 having the above positional relationship, such a first corner 15 is a load. While changing the angle α at the time of application, it can move to the outside (the left side in the figure) of the inner periphery of the main body 10.

  As described above, the first corner portion 15 can be elastically deformed when a load is applied. Therefore, by appropriately setting the length of the first cylindrical portion 11 in the axial direction, the first cylindrical portion 11 can be deformed when the load is applied. An undeformed portion on the 101 side (above the point S in FIG. 4B) can be provided. In such an undeformed portion of the first cylindrical portion 11 on the first member 101 side, the laminated portion 12 having the concave portion 12A and the convex portion 12B is formed.

  On the other hand, on the lower side of the spring P, the second cylindrical portion 13 protrudes from the inner peripheral portion of the main body portion 10 toward the second member 102 and is in contact therewith. In this case, the second corner portion 16 having the same function as that of the first corner portion 15 changes the angle β according to the pressing force from the second member 102 during the elastic deformation by applying a load, while the main body portion 10. It is possible to move to the outer side (right side in the figure) of the outer peripheral portion.

  Since the second corner portion 16 can be elastically deformed when a load is applied in this way, the second cylindrical portion 13 can be set to the second member when the load is applied by appropriately setting the length of the second cylindrical portion 13 in the axial direction. An undeformed portion on the 102 side (below the point T in FIG. 4B) can be provided. In such an undeformed portion of the second cylindrical portion 13 on the second member 102 side, the laminated portion 14 having the concave portion 14A and the convex portion 14B is formed.

  As described above, the stacked portion 12 is formed in the undeformed portion of the first cylindrical portion 11 on the first member 101 side, and the stacked portion 14 is formed in the undeformed portion of the second cylindrical portion 13 on the second member 102 side. Thus, the spring P can prevent the first cylindrical portion 11 and the second cylindrical portion 13 from sliding. When the springs 1 to 3 that perform the same operation as the spring P are overlapped and disposed between the first member 101 and the first member 102 as shown in FIG. 1, the springs 1 to 3 slide against each other. The springs 1 and 3 do not slide with respect to the first member 101 and the first member 102. As a result, in the load characteristics of the springs 1 to 3, the hysteresis that has been a problem with the disc spring does not occur.

(2) Operation of Embodiment The operation of the spring laminating mechanism including the cylindrical portion and the laminating portion as described above will be described mainly with reference to FIGS. 5 (A) to 5 (D). 5 (A) to 5 (D) show a fitting state between the stacked portions of the stacking mechanism of the springs 1 and 2, FIG. 5 (A) is a normal fitting state, and FIG. 5 (B) is a drawing. FIG. 5C is a fitting state when the spring 1 moves to the lower side of the drawing with respect to the spring 2, and FIG. 5 (D) is a cross-sectional view of the fitting state when the spring 1 moves to the lower right side of the drawing with respect to the spring 2. In FIGS. 5A to 5D, in order to distinguish the convex portion 12B of the springs 1 and 2, the convex portion of the spring 1 is denoted by reference numeral 12B ₁ , and the convex portion of the spring 2 is denoted by reference numeral 12B _2. Yes. Moreover, in the fitting state of the lamination parts of the lamination mechanism of the springs 1 and 3, since the same operation as the fitting state of the lamination parts of the lamination mechanism of the springs 1 and 2 is performed, the description is omitted. .

In the superposition of the springs 1 and 2, one of the spring 1 and the spring 2 is shifted in phase by a half cycle around the axis with respect to the other, and the stacked portions are fitted to each other. In this case, the convex portions 12B ₁ and the convex portion 12B ₂ of the laminate unit springs 2 of the laminate unit springs 1 are adjacent to each other. In such fitting of the laminated portions, the central axes C ₁ and C ₂ of the springs ₁ and ₂ coincide with each other. It becomes unnecessary.

In the normal fitting state shown in FIG. 5 (A), when a horizontal external force is applied to the overlapped surfaces of the springs 1 and 2, the occurrence of axial misalignment is prevented as follows. For example, as shown in FIG. 5 (B), the spring 1 spring when the external force to move to the right in FIG applied for two, convex bottom right bottom left of the convex portion 12B ₁ spring 2 of the spring 1 and parts 12B _2, by contact at a point marked H, move against the spring 2 of the spring 1 is minimized. For example, as shown in FIG. 5 (C), the spring 1 spring 2 for the case where applied in the horizontal direction external forces so as to move to the bottom of the illustration of the spring 1 the upper right of the convex portion 12B ₁ spring 2 by location abutting of the convex portion 12B ₂ and the mark I in the lower right, move against the spring 2 of the spring 1 is minimized. For example, as shown in FIG. 5D, when a horizontal external force is applied to the spring 1 so that the spring 1 moves to the lower right side of the drawing, the lower left convex portion 12B1 of the spring ₁ is of by contact with portions of the convex portion 12B ₂ and the mark H in the lower right, by abutting at the location of the projecting portion 12B ₂ and the mark I in the lower right of the top right of the convex portion 12B ₁ spring 2 Katsubane 1 The movement of the spring 1 with respect to the spring 2 is suppressed to a minimum.

Thus, in the normal fitting state shown in FIG. 5A, when a horizontal external force is applied to the superimposed surfaces of the springs ₁ and 2, the convex portion 12B1 of the spring ₁ and the convex portion of the spring 2 are applied. Since the relative degrees of freedom of each other are constrained by the selective contact of 12B _2, it is possible to prevent the occurrence of axial misalignment.

  As described above, in the laminating mechanism of the springs 1 to 3 according to the present embodiment, the concavo-convex laminated portions 12 and 14 are formed on the end surfaces of the first and second cylindrical portions 11 and 13 on the surface of the main body portion 10 on which the counterpart spring is overlapped. , And the stacked portions 12 and 14 are fitted into the stacked portions 12 and 14 of the cylindrical portion of the counterpart spring, whereby the stacked springs can be fixed. As described above, the fixing of the springs does not require the trouble of measuring the amount of axial deviation, and does not use other members, so that the springs can be easily aligned without increasing the number of parts. . Further, by fixing the springs together, it is possible to prevent the occurrence of axial misalignment in the circumferential direction and the radial direction when an external force is applied from other than the axial direction. The effects as described above can be obtained with a simple configuration in which the laminated portions 12 and 14 are formed in the first cylindrical portion 11 and the second cylindrical portion 13 of the spring itself.

  In particular, in the first cylindrical portion 11, the circumferential lengths of the concave portions 12A of the laminated portion 12 are equal to each other, the circumferential lengths of the convex portions 12B of the laminated portion 12 are equal to each other, and the concave portions 12A and 12A A plurality of pairs of convex portions 12B are periodically formed. Similarly to the first cylindrical portion 11, the second cylindrical portion 13 also has a plurality of pairs of concave portions 14 </ b> A and convex portions 14 </ b> B of the laminated portion 14 formed in the same manner as the first cylindrical portion 11. As a result, when the laminated portions 12 of the springs are fitted together and when the laminated portions 14 of the springs are fitted together, the phase of one spring is shifted by half a period around the axis with respect to the other spring. It can be shifted and stacked. Therefore, since the shape of each of the laminated portions 12 and 14 of all the springs can be made the same, only one type of spring needs to be manufactured, and as a result, the manufacturing cost can be reduced.

  Moreover, the laminated parts 12 and 14 can fix springs reliably by joining with the laminated parts 12 and 14 of the cylindrical part of the other spring. In addition, since the springs are fixed by fitting the laminated portions at the time of such joining, the joining can be performed with high accuracy, and as a result, the accuracy of the alignment can be further improved. .

(3) Modifications Although the present invention has been described with reference to the above-described embodiment, the present invention is not limited to the above-described embodiment, and various modifications are possible. In the following modification, the same components as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the said embodiment, although the laminated part of this invention was applied to the springs 1-3 whose main-body part 10 is a cone part, it is not limited to this, A cylindrical part is formed in the end surface of the main-body part 10. The laminated portion of the present invention can be applied to various springs. For example, in the spring 4A shown in FIG. 6, the main body 40 can be formed in a cylindrical shape having the same cross-sectional shape as the cylindrical parts 42 and 43. In this case, the main body 40 and the cylindrical parts 42 and 43 are integrally formed. can do. For example, the spring 4B shown in FIG. 7 is a mesh-like spring (so-called mesh spring) in which a plurality of holes 45 are formed in the spring 4A shown in FIG.

  For example, in the above embodiment, the cylindrical portion is a cylindrical portion, and a plurality of laminated portions having a concave portion and a convex portion having the same circumferential length are periodically formed, but the present invention is not limited to this. Various modifications can be made to the shape of the cylindrical portion, the number of concave portions and convex portions, the length in the circumferential direction, the shape, and the like. The shape of the cylindrical portion may be a cylindrical shape, and an elliptical shape, a rectangular shape, or the like can be used as its cross-sectional shape. The number of the concave portions and the convex portions can be set as appropriate, and the larger the number, the more reliably the springs can be fixed.

  The lengths of the concave portion and the convex portion may not be equal to each other, and the concave portion and the convex portion may not be periodic and can be appropriately set. The shape of the concave portion and the convex portion is not limited to a rectangular shape, and may be a circle, an ellipse, or the like, and a fine shape may be added to the shape. In the above embodiment, the number of springs to be overlapped is 3, but the number can be set as appropriate. In the above embodiment, for example, the number of springs to be overlapped can be set by adjusting the number of springs 1.

  For example, in the example illustrated in FIG. 8, the number of springs to be overlapped is two, the stacked portions 51 and 52 are formed in the second cylindrical portion 13 of the springs 5A and 5B, and the stacked portions 51 and 52 are fitted to each other. In this case, the laminated portion 51 has an arc-shaped concave portion 51A and a flat convex portion 51B, and the concave portions 51A are formed at equal intervals. The laminated portion 52 has a flat concave portion 52A and an arc-shaped convex portion 51B, and the convex portions 51B are formed at equal intervals.

  In addition, a stopper can be formed on the first member 101 and the second member 102 with which the first cylindrical portion 11 of the spring 3 and the second cylindrical portion 13 of the spring 2 abut. For example, the first member 101 and the second member 102 can be formed with the recesses fitted to the first and second cylindrical portions 11 and 13 as stoppers. Further, the laminated portion 12 can be formed in the first cylindrical portion 11 of the spring 3 that contacts the first member 101, and the uneven portion that fits into the laminated portion 12 can be formed in the first member 101. Furthermore, the laminated portion 14 can be formed in the second cylindrical portion 13 of the spring 2 that contacts the second member 102, and the uneven portion that fits into the laminated portion 14 can be formed in the second member 102.

  The stopper is not limited to the concave portion or the concave and convex portion, and may be any fixing means for fixing the first cylindrical portion 11 or the second cylindrical portion 13, for example, and it goes without saying that various modifications are possible. In this aspect, the occurrence of hysteresis in the load characteristics of the springs 1 to 3 can be more effectively prevented.

  Moreover, when applying this invention to the spring whose main-body part 10 is a cone part, this invention is not limited to the said embodiment, A various deformation | transformation is possible.

  For example, in the above embodiment, the main body 10 and the first and second cylindrical parts 11 and 13 are not formed with structures, but various structures may be formed at these parts. For example, a slit can be formed in at least one of the main body portion 10 and the first and second cylindrical portions 11 and 13. Specifically, in the spring 6 </ b> A shown in FIG. 9, slits 61 and 62 are formed on the side surfaces of the convex portions 11 </ b> B and 13 </ b> B of the first and second cylindrical portions 11 and 13. In the spring 6 </ b> B shown in FIG. 10, a slit 63 is formed in the main body 10. Such slits 61 to 63 can be appropriately combined, and the shape thereof can be set as appropriate. In this aspect, the weight of the spring can be reduced.

  For example, in the said embodiment, although the main-body part 10 which makes the cone shape which inclines below toward an outer peripheral part from an inner peripheral part was used, it is not limited to this, A main-body part uses various shapes. be able to. For example, the spring 7A shown in FIG. 11 uses a main body 70 that has a stepped shape from the inner periphery toward the outer periphery. The stepped shape of the main body portion 70 has a plurality of step portions including a vertical direction portion 71 and a horizontal direction portion 72. A corner 73 is formed at the boundary between the vertical portion 71 and the horizontal portion 72, a corner 74 is formed at the boundary between the steps, and the corners 73 and 74 are corners of the above embodiment. 73 and 74 can be provided.

  The spring 7B shown in FIG. 12 uses a main body portion 75 having a substantially S shape. In the spring 7 </ b> C shown in FIG. 13, a main body 76 having a conical shape inclined upward from the inner periphery toward the outer periphery is used. In this case, the height of the first cylindrical portion 11 and the second cylindrical portion 13 is high. The main body 10 may have a planar shape that is substantially orthogonal to the first cylindrical portion 11 and the second cylindrical portion 13.

  Furthermore, in the said embodiment, although the 1st, 2nd cylindrical part 11 and 13 was used as a cylindrical part of this invention, it is not limited to this, A cylindrical part can use a various structure. For example, when the spring deflection is small, only one of the first and second cylindrical portions 11 and 13 can be used. In addition, the shape of the cylindrical portion is not limited to the cylindrical shape shown in the above embodiment, and various shapes such as a conical shape can be used. In this case, the cross section is not limited to a linear shape, and may be a curved shape such as a substantially S shape.

  Moreover, the protrusion direction with respect to the main-body part 10 of the 1st cylindrical part 11 and the 2nd cylindrical part 13 is good also as a reverse direction with the said embodiment. That is, the protruding direction of the first cylindrical portion 11 with respect to the main body portion 10 may be the lower side in FIG. 2, and the protruding direction of the second cylindrical portion 13 with respect to the main body portion 10 may be the upper side in FIG. In the said embodiment, although the 1st cylindrical part 11 and the 2nd cylindrical part 13 were formed in the inner peripheral part and outer peripheral part of a main-body part, only any one of the 1st cylindrical part 11 and the 2nd cylindrical part 13 is formed. Also good. Moreover, the shape of the 1st corner | angular part 15 and the 2nd corner | angular part 16 is not limited to the shape of illustration, It can change into various shapes, such as a curved surface shape.

  As described above, the shape of the main body part, the shape of the cylindrical part, the formation position and the protruding direction, the number of concave parts and convex parts, the circumferential length and shape, the formation of structures such as slits, and the first corner part Needless to say, modifications such as the shape of the second corner can be appropriately combined.

It is a side view showing the state where the spring to which the lamination mechanism concerning one embodiment of the present invention was applied was piled up and installed between the 1st member and the 2nd member. 1 is a perspective view of a spring, and FIG. 2B is a side sectional view of a right side portion of the spring. 2A and 2B show a configuration of a stacking mechanism of the spring 1 in FIG. 2, in which FIG. 2A is a plan view of a first tubular portion of the spring, and FIG. 2B is a plan view of a second tubular portion of the spring. (A) is a sectional side view of the spring before operation (dotted line) and at the time of operation (solid line), and (B) is the first corner and the second corner during operation of the spring. It is an expanded sectional side view of a part. The fitting state of the laminated parts of the spring laminating mechanism is represented, (A) is a sectional view of the fitting state in the normal state, and (B) to (D) are the fitting state in the normal state of (A). It is sectional drawing of a fitting state when the external force of each direction is applied. It is a perspective view showing the structure of the modification of the spring to which the lamination | stacking mechanism which concerns on one Embodiment of this invention was applied. It is a perspective view showing the structure of the other modification of the spring to which the lamination | stacking mechanism which concerns on one Embodiment of this invention was applied. It is a side view showing the structure of the other modification of the spring to which the lamination | stacking mechanism which concerns on one Embodiment of this invention was applied. It is a perspective view showing the structure of the other modification of the spring to which the lamination | stacking mechanism which concerns on one Embodiment of this invention was applied. It is a perspective view showing the structure of the other modification of the spring to which the lamination | stacking mechanism which concerns on one Embodiment of this invention was applied. It is a sectional side view showing the composition of the other modification of the spring to which the lamination mechanism concerning one embodiment of the present invention is applied. It is a sectional side view showing the composition of the other modification of the spring to which the lamination mechanism concerning one embodiment of the present invention is applied. It is a sectional side view showing the composition of the other modification of the spring to which the lamination mechanism concerning one embodiment of the present invention is applied.

Explanation of symbols

1-3, 4A, 4B, 5 ... spring, 10, 40, 70, 75, 76 ... main body, 10A ... hole, 11, 41 ... first cylindrical part (cylindrical part), 12, 14, 42, 44,51,52 ... laminated unit, 12A, 14A, 42A, 44A , 51A, 52A ... _{recess, 12B, 12B 1, 12B 2} , 14B, 42B, 44B, 51B, 52B ... projecting portion, 13 ... second cylindrical portion (Cylindrical part), 15 ... 1st corner (corner), 16 ... 2nd corner (corner), 45 ... Hole, 101 ... 1st member, 102 ... 2nd member, (alpha), (beta) ... Angle

Claims (7)

In the spring laminating mechanism that enables the use of a plurality of springs stacked between the first member and the second member,
A cylindrical portion formed so as to protrude toward the counterpart spring on the surface of the main body portion of the spring on which the counterpart spring is stacked;
And formed on the end face of the cylindrical portion, and a laminated portion having a concave portion and a convex portion,
The laminated portion of the spring is characterized in that the laminated portion is fitted with a laminated portion of a cylindrical portion of the counterpart spring. The cylindrical part is a cylindrical part,
2. The spring according to claim 1, wherein the concave portion and the convex portion of the stacked portion have the same circumferential length, and a plurality of pairs of the concave portion and the convex portion are periodically formed. Laminating mechanism.   The said lamination | stacking part is joined to the lamination | stacking part of the cylindrical part of the said other party spring, The spring lamination | stacking mechanism of Claim 1 or 2 characterized by the above-mentioned.   The spring according to any one of claims 1 to 3, wherein the stacked portion does not shift in a direction perpendicular to the axial direction even if the pressing force from the first member and the second member changes. Laminating mechanism. The main body portion is applied to a spring that extends in a direction crossing the direction of the pressing force from the first member and the second member, and has a hole portion,
The cylindrical portion is formed on at least one of the inner peripheral portion and the outer peripheral portion of the main body portion,
A corner portion is formed at a boundary portion between the main body portion and the cylindrical portion,
The spring lamination mechanism according to any one of claims 1 to 4, wherein the corner portion is elastically deformable so that the angle changes according to the pressing force. When applied to the spring abutting against the member, the tubular portion is formed on the surface of the main body portion of the spring on the member side,
The cylindrical portion on the member side has a contact portion that protrudes toward the member and contacts the member,
The spring lamination mechanism according to any one of claims 1 to 5, wherein the member is provided with a stopper that prevents the contact portion from sliding relative to the member. The contact portion is formed with the laminated portion having the concave portion and the convex portion,
The member is formed with an uneven portion that fits into the laminated portion,
The spring laminating mechanism according to claim 6, wherein the laminated portion of the contact portion and the uneven portion of the member have a function as the stopper.

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