JP7453464B2 - spring assembly - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a spring assembly that holds a plurality of springs.

Patent Document 1 discloses a sealing device that includes a plurality of return springs that bias a piston and a cancel plate. The position of one end of the return spring is regulated by a semi-cylindrical recess and a protrusion formed on the cancel plate.

Japanese Patent Application Publication No. 2002-372073

In the technique described in Patent Document 1, when assembling one end of the return spring to the cancel plate, it must be inserted between the recessed portion and the protrusion, resulting in poor assemblability. On the other hand, if the clearance between the concave portion and the protrusion is made too large than the return spring in order to improve the ease of assembly, the guideability of the return spring will be reduced.

An object of the present invention is to provide a technique that makes it easy to assemble a spring while suppressing deterioration in guideability of the spring.

In order to solve the above problems, a spring assembly according to an aspect of the present invention includes a plurality of springs, a first substrate provided in an annular shape and supporting one end of the plurality of springs, and a first substrate provided in an annular shape and supporting one end of the plurality of springs. The second substrate supports the other end and faces the first substrate. Of the first substrate and the second substrate, an inner circumferential wall is erected on the inner periphery of one substrate, an outer periphery wall is erected on the outer periphery of the other substrate, and the plurality of springs are connected to the first substrate and the second substrate. A plurality of guides are disposed apart in the circumferential direction between the two substrates, are disposed between an inner circumferential wall portion and an outer circumferential wall portion, and at least one of the inner circumferential wall portion and the outer circumferential wall portion guides the outer periphery of the plurality of springs. It has a surface. The guide surface is curved to fit between adjacent springs.

According to the present invention, it is possible to provide a technique that makes it easy to assemble a spring and suppresses deterioration in guideability of the spring.

FIG. 3 is a perspective view of the spring assembly of the first embodiment. FIG. 3 is an exploded view of the spring assembly of the first embodiment. 3(a) is a bottom view of the first substrate, and FIG. 3(b) is a sectional view taken along line AA of the first substrate shown in FIG. 3(a). FIG. 4(a) is a top view of the second substrate, and FIG. 4(b) is a cross-sectional view of the second substrate taken along line BB shown in FIG. 4(a). FIG. 5(a) is a top view of the spring assembly of the first embodiment, and FIG. 5(b) is a bottom view of the spring assembly of the second embodiment. 5(a) is a sectional view taken along line CC of the spring assembly shown in FIG. 5(a). FIG. FIG. 7 is a perspective view of a spring assembly according to a second embodiment. FIG. 8(a) is a top view of the assembly of the second embodiment, and FIG. 8(b) is a bottom view of the spring assembly of the second embodiment. FIG. 7 is a perspective view of a spring assembly according to a third embodiment. FIG. 10(a) is a top view of the assembly of the third embodiment, and FIG. 10(b) is a bottom view of the spring assembly of the third embodiment. FIG. 7 is a perspective view of a spring assembly according to a fourth embodiment. It is a perspective view of the spring assembly of a 5th example.

FIG. 1 is a perspective view of a spring assembly 10 according to a first embodiment. Further, FIG. 2 is an exploded view of the spring assembly 10 of the first embodiment. Spring assembly 10 includes a first substrate 12 , a second substrate 14 , and a plurality of springs 16 . Note that the manner in which the spring assembly 10 is used is not limited to the manner in which the first substrate 12 is located above the second substrate 14, but the first substrate 12 may be located below the second substrate 14.

The spring assembly 10 is provided in a clutch mechanism of a vehicle transmission, functions as an elastic body for returning the position of a piston, and is provided on the outer periphery or inner periphery of a tube member. The spring assembly 10 is expandable and retractable in the axial direction of the spring 16 and biases the piston. Note that in the following description, the axial direction of the spring 16 will be simply referred to as the axial direction.

The first substrate 12 and the second substrate 14 are formed into plate shapes made of a metal material, and support one end and the other end of the plurality of springs 16. The first substrate 12 and the second substrate 14 are each formed in an annular shape and are arranged to face each other.

The plurality of springs 16 are spaced apart in the circumferential direction between the first substrate 12 and the second substrate 14. The end turn portions located at one end and the other end of the spring 16 may be formed to have a smaller diameter than the average coil diameter of the spring 16. This makes it easier to caulk only the end turn portion whose diameter has been reduced. Here, the first substrate 12 and the second substrate 14 will be explained with reference to new drawings.

3(a) is a bottom view of the first substrate 12, and FIG. 3(b) is a sectional view taken along line AA of the first substrate 12 shown in FIG. 3(a). The first substrate 12 has a first pedestal section 20, an inner circumferential wall section 22, a first support section 24, a first guide surface 26, and a first notch section 28. The first pedestal portion 20 is formed into a substantially annular plate shape. The inner peripheral wall portion 22 stands upright from the inner peripheral edge of the first pedestal portion 20 and is formed over the entire inner peripheral edge of the first pedestal portion 20 .

The first support portion 24 is formed to protrude in order to caulk the end of the spring 16. A hole is formed inside the first support portion 24 . The plurality of first supports 24 are provided spaced apart in the circumferential direction in accordance with the position of the spring 16.

The first guide surface 26 is formed in a curved manner on the inner circumferential wall portion 22 and is formed to recess the inner circumferential wall portion 22 radially outward. The first guide surface 26 is located between the first support parts 24 and is formed with an interval between the two first support parts 24 . A plurality of springs 16 are arranged between circumferentially adjacent first guide surfaces 26 on the inner circumferential wall portion 22 . Thereby, the number of curved first guide surfaces 26 to be formed can be reduced and molding can be facilitated.

The first guide surface 26 is curved outward in the radial direction so as to fit between adjacent springs 16 , and guides a portion of the outer periphery of the spring 16 . Thereby, the first guide surface 26 comes close to the side portion of the spring 16, and when the spring 16 tries to fall down, it can support it and suppress the fall of the spring 16. The first notch 28 is formed by cutting out the outer peripheral edge of the first pedestal 20 so as to be recessed. The first cutout portion 28 is formed at a distance between the two first support portions 24 . The first notch 28 is positioned offset from the first guide surface 26 in the circumferential direction.

4(a) is a top view of the second substrate 14, and FIG. 4(b) is a sectional view taken along line BB of the second substrate 14 shown in FIG. 4(a). The second substrate 14 has a second pedestal portion 30, an outer peripheral wall portion 32, a second support portion 34, a second guide surface 36, and a second notch portion 38. The second pedestal portion 30 is formed in a substantially annular plate shape. The outer peripheral wall portion 32 stands up from the outer peripheral edge of the second pedestal portion 30 and is formed over the entire circumference of the outer peripheral edge of the second pedestal portion 30 .

The second support portion 34 is formed to protrude in order to caulk the end of the spring 16. The plurality of second support parts 34 are provided spaced apart in the circumferential direction in accordance with the position of the spring 16.

The second guide surface 36 is curved and formed on the outer circumferential wall 32 and is formed to recess the outer circumferential wall 32 radially inward. The second guide surface 36 is located between the second support parts 34 and is formed with an interval between the two second support parts 34 . That is, the plurality of springs 16 are arranged between the second guide surfaces 36 adjacent in the circumferential direction on the outer peripheral wall portion 32. Thereby, the number of curved second guide surfaces 36 to be formed can be reduced and molding can be facilitated. The second guide surface 36 is curved radially outward so as to fit between adjacent springs 16 and guides a portion of the outer surface of the spring 16.

The second cutout portion 38 is formed by cutting out the outer peripheral edge of the second pedestal portion 30 so as to be recessed. The second cutout portion 38 is formed at a distance between the two second support portions 34 . The second notch 38 is positioned offset from the second guide surface 36 in the circumferential direction.

The distance D1 that the first guide surface 26 is recessed radially outward from the inscribed circle 29 of the inner peripheral wall 22 is from the inscribed circle 29 of the inner peripheral wall 22 to the center position C of the first support part 24 (spring 16). is longer than the distance DC. That is, the first guide surface 26 is formed to be recessed radially outward from the center position C of the first support portion 24 . This prevents the spring 16 from collapsing in the circumferential direction.

FIG. 5(a) is a top view of the spring assembly 10 of the first embodiment, and FIG. 5(b) is a bottom view of the spring assembly 10 of the second embodiment. As shown in FIG. 5A, the outer peripheral wall portion 32 is located on the outer peripheral side of the first substrate 12 when viewed in the axial direction, and is located on the outer side of the first pedestal portion 20 in the radial direction. A first notch portion 28 is formed in the first pedestal portion 20 of the first substrate 12 in accordance with the position of the second guide surface 36 of the second substrate 14 . Thereby, interference between the inwardly curved second guide surface 36 and the first substrate 12 can be avoided.

The inner circumferential wall portion 22 is located on the inner circumferential side of the second substrate 14 when viewed in the axial direction, and is located on the inner circumferential side of the second pedestal portion 30 in the radial direction. The second notch 38 of the second substrate 14 is formed according to the position of the first guide surface 26 of the first substrate 12 to avoid interference between the outwardly curved first guide surface 26 and the second substrate 14. be able to. Thereby, when the spring 16 is compressed and the first substrate 12 and the second substrate 14 approach each other, it is possible to avoid the first substrate 12 and the second substrate 14 from hitting each other, and a sufficient stroke amount can be ensured. Compared to the case where walls are provided on the inner and outer circumferential edges of the first substrate 12, by forming the inner circumferential wall section 22 only on the inner circumferential edge, the spring 16 can be inserted radially from the outside, making it easier to install. Good sex. Therefore, it is easy to attach the spring 16 in close proximity to the inner peripheral wall 22.

The distance D2 that the second guide surface 36 is recessed radially inward from the circumscribed circle 39 of the outer peripheral wall 32 is the distance from the circumscribed circle 39 of the outer peripheral wall 32 to the center position C of the first support part 24 (spring 16). Longer than DC. That is, the second guide surface 36 is formed to be recessed radially inward from the center position C of the first support portion 24 . This prevents the spring 16 from collapsing in the circumferential direction.

FIG. 6 is a sectional view taken along line CC of the spring assembly 10 shown in FIG. 5(a). The plurality of springs 16 are arranged between the inner peripheral wall 22 and the outer peripheral wall 32. Thereby, even if the spring 16 collapses radially inward or radially outward, it is possible to prevent the spring 16 from collapsing.

Since the first substrate 12 has the inner circumferential wall portion 22 and the second substrate 14 has the outer circumferential wall portion 32, the rigidity of both substrates can be increased. The inner circumferential wall portion 22 and the outer circumferential wall portion 32 may have a height that is one-third or more of the free length of the spring 16.

One end and the other end of the plurality of springs 16 are supported by the first substrate 12 or the second substrate 14 by caulking. The inner circumferential wall portion 22 and the outer circumferential wall portion 32 each function as a guide for the spring 16 during caulking. By forming the inner peripheral wall part 22 and the first support part 24 on the first substrate 12, it is easy to set the distance between the position of the spring 16 and the inner peripheral wall part 22, and it is possible to make the spring 16 and the inner peripheral wall part 22 close to each other. can. Further, the outer peripheral wall portion 32 of the second substrate 14 can also be close to the spring 16 in the same manner.

Return to Figure 1. The first guide surface 26 and the second guide surface 36 are formed on the inner circumferential wall 22 and the outer circumferential wall 32, respectively, and are disposed offset in the circumferential direction so as to sandwich the spring 16 therebetween. When the first substrate 12 and the second substrate 14 receive an input in the circumferential direction, they tend to shift in the circumferential direction, and the spring 16 collapses in the circumferential direction. At this time, the first guide surface 26 and the second guide surface 36 can prevent the spring 16 from collapsing in the circumferential direction. Furthermore, by arranging the first guide surface 26 and the second guide surface 36 so as to sandwich the spring 16, even if the rotational deviation of the first substrate 12 and the second substrate 14 occurs in either direction, either The guide surfaces 26, 36 can guide the spring 16.

The first guide surface 26 formed on the inner circumferential wall 22 and the second guide surface 36 formed on the outer circumferential wall 32 are arranged to be shifted in the circumferential direction. Thereby, the number of curved guide surfaces 26, 36 can be reduced and molding can be facilitated.

FIG. 7 is a perspective view of the spring assembly 100 of the second embodiment. FIG. 8(a) is a top view of the assembly 100 of the second embodiment, and FIG. 8(b) is a bottom view of the spring assembly 100 of the second embodiment. The spring assembly 100 of the second embodiment shown in FIG. 7 has fewer second guide surfaces 136 formed on the lower second substrate 114 than the spring assembly 10 shown in FIG.

Spring assembly 100 includes a first substrate 112, a second substrate 114, and a spring 16. The first substrate 112 has a first pedestal section 120, an inner circumferential wall section 122, a first support section 124, and a first guide surface 126. The second substrate 114 has a second pedestal section 130, an outer peripheral wall section 132, a second support section 134, and a second guide surface 136.

The first guide surface 126 is formed by spacing two springs 16 as shown in FIG. 8(a), but the second guide surface 136 is formed by four springs 16 as shown in FIG. It is formed with an interval of . Thereby, the number of first guide surfaces 126 and second guide surfaces 136 can be reduced to facilitate molding. The first guide surface 126 and the second guide surface 136 are formed on the inner circumferential wall 122 and the outer circumferential wall 132, respectively, and are arranged offset in the circumferential direction. Each of the springs 16 is guided by either the first guide surface 126 or the second guide surface 136 in close proximity thereto.

FIG. 9 is a perspective view of a spring assembly 200 according to a third embodiment. FIG. 10(a) is a top view of the assembly 200 of the third embodiment, and FIG. 10(b) is a bottom view of the spring assembly 200 of the third embodiment. The spring assembly 200 of the third embodiment shown in FIG. 9 is different from the spring assembly 10 shown in FIG. 2. The number of guide surfaces 236 is small.

Spring assembly 200 includes a first substrate 212, a second substrate 214, and spring 16. The first substrate 212 has a first pedestal section 220, an inner peripheral wall section 222, a first support section 224, and a first guide surface 226. The second substrate 214 has a second pedestal portion 230, an outer peripheral wall portion 232, a second support portion 234, and a second guide surface 236.

The first guide surface 226 is formed by spacing six springs 16 as shown in FIG. 10(a), but the second guide surface 236 is formed by two or four springs as shown in FIG. It is formed with two springs 16 spaced apart. In this way, two or more springs 16 are arranged between adjacent second guide surfaces 236. Thereby, the number of first guide surfaces 226 and second guide surfaces 236 can be reduced to facilitate molding. Each of the springs 16 is guided by either the first guide surface 226 or the second guide surface 236 in close proximity thereto.

FIG. 11 is a perspective view of a spring assembly 300 according to a fourth embodiment. The spring assembly 300 of the fourth embodiment shown in FIG. 11 has a larger number of first guide surfaces 326 formed on the first substrate 312 than the spring assembly 10 shown in FIG. The difference is that the second guide surface is not formed.

Spring assembly 300 includes a first substrate 312, a second substrate 314, and spring 16. The first substrate 312 has a first pedestal section 320, an inner peripheral wall section 322, a first support section 324, and a first guide surface 326. The second substrate 314 has a second pedestal section 330, an outer peripheral wall section 332, and a second support section.

The first guide surfaces 326 are provided on both sides of each spring 16 to prevent each spring 16 from collapsing in the circumferential direction. A first guide surface 326 is provided on each spring 16, whereas no guide surface is formed on the second substrate 314.

The first support portion 324 is caulked to the spring 16. On the other hand, the second support portion of the second substrate 314 is simply a boss shape, and although it is inserted into the end turn portion of the spring 16, it does not need to be caulked. In the fourth embodiment, the first guide surface 326 is formed on the inner circumferential wall 322 and the second guide surface is not formed on the outer circumferential wall 332, but the present invention is not limited to this mode. The guide surface may not be formed on the outer peripheral wall portion 332, but the guide surface may be formed on the outer peripheral wall portion 332.

FIG. 12 is a perspective view of a spring assembly 400 according to a fifth embodiment. The spring assembly 400 of the fifth embodiment shown in FIG. 12 differs from the spring assembly 10 shown in FIG. 1 in that it has more first guide surfaces 426 and second guide surfaces 436.

Spring assembly 400 includes a first substrate 412, a second substrate 414, and spring 16. The first substrate 412 has a first pedestal section 420, an inner peripheral wall section 422, a first support section 424, and a first guide surface 426. The second substrate 414 has a second pedestal section 430, an outer peripheral wall section 432, a second support section 434, and a second guide surface 436.

The first guide surfaces 426 are provided on both sides of each spring 16, and the second guide surfaces 436 are provided on both sides of each spring 16 to prevent the springs 16 from falling down in the circumferential direction.

The present invention is not limited to the embodiments described above, and it is possible to make various design changes and other modifications to each embodiment based on the knowledge of those skilled in the art. Examples described herein may also be included within the scope of the present invention.

In the embodiment, the end turn portion of the spring 16 is formed to be smaller in diameter than the coil diameter other than the end turn portion, but the present invention is not limited to this mode, and the coil diameters of the spring 16 may all be formed uniformly. .

FIELD OF THE INVENTION The present invention relates to a spring assembly that holds a plurality of springs.

Reference Signs List 10 spring assembly, 12 first board, 14 second board, 16 spring, 20 first pedestal part, 22 inner peripheral wall part, 24 first support part, 26 first guide surface, 28 first cutout part, 30 second pedestal part, 32 outer peripheral wall part, 34 second support part, 36 second guide surface, 38 second notch part.

Claims (7)

a plurality of springs;
a first substrate provided in an annular shape and supporting one end of the plurality of springs;
a second substrate provided in an annular shape, supporting the other ends of the plurality of springs, and facing the first substrate;
Of the first substrate and the second substrate, an inner circumferential wall is erected on the inner periphery of one substrate, and an outer periphery wall is erected on the outer periphery of the other substrate,
The plurality of springs are spaced apart in the circumferential direction and arranged between the inner circumferential wall and the outer circumferential wall,
At least one of the inner circumferential wall portion and the outer circumferential wall portion has a plurality of guide surfaces that respectively guide outer peripheries of the plurality of springs,
The spring assembly is characterized in that the guide surface is curved so as to fit between the adjacent springs, and is formed on the inner circumferential wall and the outer circumferential wall, respectively. The spring assembly according to claim 1, wherein at least one of one end and the other end of the plurality of springs is supported by the first substrate or the second substrate by caulking. a plurality of springs;
a first substrate provided in an annular shape and supporting one end of the plurality of springs;
a second substrate provided in an annular shape, supporting the other ends of the plurality of springs, and facing the first substrate;
Of the first substrate and the second substrate, an inner circumferential wall is erected on the inner periphery of one substrate, and an outer periphery wall is erected on the outer periphery of the other substrate,
The plurality of springs are spaced apart in the circumferential direction and arranged between the inner circumferential wall and the outer circumferential wall,
At least one of the inner circumferential wall portion and the outer circumferential wall portion has a plurality of guide surfaces that respectively guide outer peripheries of the plurality of springs,
The guide surface is curved and formed to fit between the adjacent springs,
A spring assembly characterized in that a plurality of the springs are arranged between the guide surfaces adjacent in the circumferential direction in the inner circumferential wall portion or the outer circumferential wall portion. The spring assembly according to claim 1, wherein the guide surface formed on the inner circumferential wall and the guide surface formed on the outer circumferential wall are disposed offset in the circumferential direction. a plurality of springs;
a first substrate provided in an annular shape and supporting one end of the plurality of springs;
a second substrate provided in an annular shape, supporting the other ends of the plurality of springs, and facing the first substrate;
Of the first substrate and the second substrate, an inner circumferential wall is erected on the inner periphery of one substrate, and an outer periphery wall is erected on the outer periphery of the other substrate,
The plurality of springs are spaced apart in the circumferential direction and arranged between the inner circumferential wall and the outer circumferential wall,
At least one of the inner circumferential wall portion and the outer circumferential wall portion has a plurality of guide surfaces that respectively guide outer peripheries of the plurality of springs,
The guide surface is curved and formed to fit between the adjacent springs,
The inner circumferential wall portion is located on the inner circumferential side of the other substrate when viewed in the axial direction,
The spring assembly is characterized in that the outer circumferential wall portion is located on the outer circumferential side of the one substrate when viewed in the axial direction. a plurality of springs;
a first substrate provided in an annular shape and supporting one end of the plurality of springs;
a second substrate provided in an annular shape, supporting the other ends of the plurality of springs, and facing the first substrate;
Of the first substrate and the second substrate, an inner circumferential wall is erected on the inner periphery of one substrate, and an outer periphery wall is erected on the outer periphery of the other substrate,
The plurality of springs are spaced apart in the circumferential direction and arranged between the inner circumferential wall and the outer circumferential wall,
The inner circumferential wall portion has a plurality of guide surfaces that respectively guide outer peripheries of the plurality of springs,
The guide surface is curved and formed to fit between the adjacent springs,
The first substrate has a plurality of first support parts each supporting one end of the plurality of springs,
A spring assembly, wherein a distance by which the guide surface is recessed radially outward from an inscribed circle of the inner circumferential wall portion is longer than a distance from the inscribed circle to a center position of the first support portion. a plurality of springs;
a first substrate provided in an annular shape and supporting one end of the plurality of springs;
a second substrate provided in an annular shape, supporting the other ends of the plurality of springs, and facing the first substrate;
Of the first substrate and the second substrate, an inner circumferential wall is erected on the inner periphery of one substrate, and an outer periphery wall is erected on the outer periphery of the other substrate,
The plurality of springs are spaced apart in the circumferential direction and arranged between the inner circumferential wall and the outer circumferential wall,
The outer peripheral wall portion has a plurality of guide surfaces that respectively guide outer peripheries of the plurality of springs,
The guide surface is curved and formed to fit between the adjacent springs,
The first substrate has a plurality of first support parts each supporting one end of the plurality of springs,
A spring assembly, wherein a distance by which the guide surface is recessed radially inward from a circumscribed circle of the outer peripheral wall portion is longer than a distance from the circumscribed circle to a center position of the first support portion.

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