WO2022176392A1

WO2022176392A1 - Spring assembly

Info

Publication number: WO2022176392A1
Application number: PCT/JP2021/048048
Authority: WO
Inventors: 泰崇植松
Original assignee: 株式会社パイオラックス
Priority date: 2021-02-18
Filing date: 2021-12-23
Publication date: 2022-08-25
Also published as: JP7453464B2; JPWO2022176392A1

Abstract

In this spring assembly 10, an inner peripheral wall part is disposed upright along the inner peripheral edge of one substrate from between a first substrate 12 and a second substrate 14, and an outer peripheral wall part is disposed upright along the outer peripheral edge of the other substrate. A plurality of springs are disposed spaced apart in the circumferential direction between the first substrate 12 and the second substrate 14, and are disposed between the inner peripheral wall part and the outer peripheral wall part. The inner peripheral wall part and/or the outer peripheral wall part has a plurality of guide faces for respectively guiding the outer periphery of the plurality of springs. The guide faces are formed curved so as to enter a space between the adjacent springs.

Description

spring assembly

The present invention relates to a spring assembly that holds multiple springs.

Patent Document 1 discloses a sealing device that includes a plurality of return springs that bias a piston and a cancel plate. One end of the return spring is positionally regulated by a semi-cylindrical concave portion and a protrusion formed on the cancel plate.

Japanese Patent Application Laid-Open No. 2002-372073

With the technique described in Patent Document 1, when one end of the return spring is assembled to the cancel plate, it is inserted between the recessed portion and the projection, resulting in poor assemblability. On the other hand, if the clearance between the concave portion and the protrusion is made too large relative to the return spring in order to improve the ease of assembly, the guide performance of the return spring deteriorates.

An object of the present invention is to provide a technique for facilitating the assembly of a spring while suppressing deterioration of the guiding performance of the spring.

In order to solve the above problems, a spring assembly according to one 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 second substrate that supports the other end of the and faces the first substrate. An inner peripheral wall portion is erected on the inner peripheral edge of one of the first substrate and the second substrate, and an outer peripheral wall portion is erected on the outer peripheral edge of the other substrate. A plurality of guides disposed circumferentially apart between the two substrates and disposed between the inner peripheral wall portion and the outer peripheral wall portion, wherein at least one of the inner peripheral wall portion and the outer peripheral wall portion guides the outer periphery of each of the plurality of springs. have a face. The guide surface is curved to fit between adjacent springs.

According to the present invention, it is possible to provide a technique for facilitating the assembly of the spring while suppressing deterioration of the guiding performance of the spring.

1 is a perspective view of the spring assembly of the first embodiment; FIG. 1 is an exploded view of the spring assembly of the first embodiment; FIG. 3(a) is a bottom view of the first substrate, and FIG. 3(b) is a cross-sectional view of the first substrate along line AA shown in FIG. 3(a). 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 the 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. FIG. 5(a) is a cross-sectional view of the spring assembly taken along the line CC. FIG. 11 is a perspective view of the spring assembly of the second embodiment; 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. 11 is a perspective view of a spring assembly of a third embodiment; 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. 11 is a perspective view of a spring assembly of a fourth embodiment; FIG. 11 is a perspective view of a spring assembly of a fifth embodiment;

FIG. 1 is a perspective view of the spring assembly 10 of the first embodiment. 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 . The mode of use of the spring assembly 10 is not limited to the mode in which the first substrate 12 is positioned above the second substrate 14 , and the first substrate 12 may be positioned below the second substrate 14 .

The spring assembly 10 is provided in the clutch mechanism of the transmission of the vehicle, functions as an elastic body that returns the position of the piston, and is provided on the outer or inner circumference of the pipe member. Spring assembly 10 is extendable in the axial direction of spring 16 to bias the piston. In the following description, the axial direction of the spring 16 is simply referred to as the axial direction.

The first substrate 12 and the second substrate 14 are made of a metal material and are plate-shaped, 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 arranged to face each other.

A plurality of springs 16 are circumferentially spaced between the first substrate 12 and the second substrate 14 . End turns 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 is reduced. Here, the first substrate 12 and the second substrate 14 will be described with reference to new drawings.

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

The first support part 24 is formed so as to protrude for crimping the end of the spring 16 . A hole is formed inside the first support portion 24 . The plurality of first support portions 24 are spaced apart in the circumferential direction according to the positions of the springs 16 .

The first guide surface 26 is curved on the inner peripheral wall portion 22 and is formed so as to dent the inner peripheral wall portion 22 radially outward. The first guide surface 26 is positioned between the first support portions 24 and formed with a gap between the two first support portions 24 . A plurality of springs 16 are arranged between circumferentially adjacent first guide surfaces 26 on the inner peripheral wall portion 22 . As a result, the number of curved first guide surfaces 26 to be formed can be reduced to facilitate molding.

The first guide surface 26 is curved radially outward so as to fit between the adjacent springs 16 and guide a part of the outer periphery of the springs 16 . As a result, when the first guide surface 26 approaches the side of the spring 16 and the spring 16 is about to fall, the spring 16 can be supported and prevented from falling. The first notch portion 28 is formed by notching the outer peripheral edge side of the first pedestal portion 20 to be recessed. The first notch 28 is formed with an interval between the two first support portions 24 . The first notch 28 is circumferentially displaced from the first guide surface 26 .

4(a) is a top view of the second substrate 14, and FIG. 4(b) is a cross-sectional view of the second substrate 14 taken along the line BB 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 is erected from the outer peripheral edge of the second pedestal portion 30 and formed over the entire outer peripheral edge of the second pedestal portion 30 .

The second support part 34 is formed so as to protrude for crimping the end of the spring 16 . A plurality of second support portions 34 are provided so as to be spaced apart in the circumferential direction according to the positions of the springs 16 .

The second guide surface 36 is curved on the outer peripheral wall portion 32 and is formed so as to dent the outer peripheral wall portion 32 radially inward. The second guide surface 36 is positioned between the second support portions 34 and formed with a gap between the two second support portions 34 . That is, the plurality of springs 16 are arranged between the circumferentially adjacent second guide surfaces 36 on the outer peripheral wall portion 32 . As a result, the number of curved second guide surfaces 36 to be formed can be reduced to facilitate molding. The second guide surface 36 is curved radially outward so as to fit between the adjacent springs 16 and guide a portion of the outer surface of the spring 16 .

The second notch portion 38 is formed by notching so as to dent the outer peripheral edge side of the second pedestal portion 30 . The second notch 38 is formed with an interval between the two second support portions 34 . The second notch 38 is circumferentially displaced from the second guide surface 36 .

The distance D1 by which the first guide surface 26 is recessed radially outward from the inscribed circle 29 of the inner peripheral wall portion 22 is from the inscribed circle 29 of the inner peripheral wall portion 22 to the center position C of the first support portion 24 (spring 16). is longer than the distance DC. That is, the first guide surface 26 is formed so as to be recessed radially outward from the center position C of the first support portion 24 . As a result, it is possible to prevent 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 positioned radially outward of the first substrate 12 and radially outward of the first base portion 20 when viewed in the axial direction. A first cutout portion 28 is formed in the first base portion 20 of the first substrate 12 according to 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 peripheral wall portion 22 is located on the inner peripheral side of the second substrate 14 when viewed in the axial direction, and is located on the radially inner side of the second pedestal portion 30 . A 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. As a result, when the spring 16 contracts and the first board 12 and the second board 14 approach each other, the contact between the first board 12 and the second board 14 can be avoided, and a sufficient stroke amount can be ensured. By forming the inner peripheral wall portion 22 only on the inner peripheral edge, the spring 16 can be inserted radially from the outside, as compared with the case where the wall portions are provided on the inner peripheral edge and the outer peripheral edge of the first substrate 12. Good nature. Therefore, it is easy to attach the spring 16 in a state close to the inner peripheral wall portion 22 .

The distance D2 by which the second guide surface 36 is recessed radially inward from the circumscribed circle 39 of the outer peripheral wall portion 32 is the distance from the circumscribed circle 39 of the outer peripheral wall portion 32 to the center position C of the first support portion 24 (spring 16). longer than DC. That is, the second guide surface 36 is formed so as to be recessed radially inward from the center position C of the first support portion 24 . As a result, it is possible to prevent 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). A plurality of springs 16 are arranged between the inner peripheral wall portion 22 and the outer peripheral wall portion 32 . As a result, even if the spring 16 falls radially inwardly or radially outwardly, it is possible to suppress the collapse.

Since the first substrate 12 has the inner peripheral wall portion 22 and the second substrate 14 has the outer peripheral wall portion 32, the rigidity of both substrates can be increased. The inner peripheral wall portion 22 and the outer peripheral wall portion 32 may have a height of 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 peripheral wall portion 22 and the outer peripheral wall portion 32 respectively function as guides for the spring 16 during crimping. By forming the inner peripheral wall portion 22 and the first support portion 24 on the first substrate 12, the distance between the position of the spring 16 and the inner peripheral wall portion 22 can be easily set, and the spring 16 and the inner peripheral wall portion 22 can be brought close to each other. can. Also, the outer peripheral wall portion 32 of the second substrate 14 can be brought 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 peripheral wall portion 22 and the outer peripheral wall portion 32, respectively, and are arranged so as to sandwich the spring 16 in the circumferential direction. 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, causing the springs 16 to collapse 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. In addition, by arranging the first guide surface 26 and the second guide surface 36 so as to sandwich the spring 16, even if the rotation deviation of the first substrate 12 and the second substrate 14 occurs in either direction, can guide the spring 16.

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

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.

The spring assembly 100 comprises a first substrate 112, a second substrate 114 and a spring 16. The first substrate 112 has a first pedestal portion 120 , an inner peripheral wall portion 122 , a first support portion 124 and a first guide surface 126 . The second substrate 114 has a second pedestal portion 130 , an outer peripheral wall portion 132 , a second support portion 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), while the second guide surface 136 is formed by four springs 16 as shown in FIG. 8(b). are formed at intervals of As a result, 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 peripheral wall portion 122 and the outer peripheral wall portion 132, respectively, and are displaced in the circumferential direction. Either the first guide surface 126 or the second guide surface 136 is adjacent to any spring 16 and guides it.

FIG. 9 is a perspective view of the spring assembly 200 of the third embodiment. 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. Spring assembly 200 of the third embodiment shown in FIG. 9 differs from spring assembly 10 shown in FIG. 2. The number of guide surfaces 236 is small.

The spring assembly 200 comprises a first substrate 212 , a second substrate 214 and springs 16 . The first substrate 212 has a first pedestal portion 220 , an inner peripheral wall portion 222 , a first support portion 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 apart as shown in FIG. 10(a), while the second guide surface 236 is formed by two or four springs 16 as shown in FIG. 10(b). are formed with two springs 16 spaced apart. Thus, two or more springs 16 are arranged between adjacent second guide surfaces 236 . As a result, the number of first guide surfaces 226 and second guide surfaces 236 can be reduced to facilitate molding. Either the first guide surface 226 or the second guide surface 236 is adjacent to any spring 16 and guides it.

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

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

The first guide surfaces 326 are provided on both sides of each spring 16 to suppress the fall of each spring 16 in the circumferential direction. Each spring 16 is provided with a first guide surface 326, whereas the second substrate 314 is not provided with a guide surface.

The first support portion 324 is crimped to the spring 16. On the other hand, the second support portion of the second substrate 314 has a simple boss shape, and although it is inserted into the end turn portion of the spring 16, it does not have to be crimped. In the fourth embodiment, the inner peripheral wall portion 322 is formed with the first guide surface 326 and the outer peripheral wall portion 332 is not formed with the second guide surface. A guide surface may be formed on the outer peripheral wall portion 332 instead of forming the guide surface on the outer peripheral wall portion 332 .

FIG. 12 is a perspective view of the spring assembly 400 of the 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 the number of first guide surfaces 426 and second guide surfaces 436 is greater.

A spring assembly 400 comprises a first substrate 412 , a second substrate 414 and springs 16 . The first substrate 412 has a first pedestal portion 420 , an inner peripheral wall portion 422 , a first support portion 424 and a first guide surface 426 . The second substrate 414 has a second pedestal portion 430 , an outer peripheral wall portion 432 , a second support portion 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 collapsing in the circumferential direction.

The present invention is not limited to the embodiments described above, and modifications such as various design changes can be made to each embodiment based on the knowledge of those skilled in the art. Examples may also be included within the scope of the present invention.

In the embodiment, the end turn portion of the spring 16 is formed smaller than the diameter of the coil other than the end turn portion. However, the coil diameter of the spring 16 may be formed uniformly. .

The present invention relates to a spring assembly that holds multiple springs.

10 spring assembly 12 first substrate 14 second substrate 16 spring 20 first pedestal portion 22 inner peripheral wall portion 24 first support portion 26 first guide surface 28 first notch portion 30 second Base portion, 32 outer peripheral wall portion, 34 second support portion, 36 second guide surface, 38 second notch portion.

Claims

a plurality of springs;
a first substrate provided in an annular shape and supporting one ends of the plurality of springs;
a second substrate that is provided in an annular shape, supports the other ends of the plurality of springs, and faces the first substrate;
An inner peripheral wall portion is erected on the inner peripheral edge of one of the first substrate and the second substrate, and an outer peripheral wall portion is erected on the outer peripheral edge of the other substrate,
the plurality of springs are spaced apart in the circumferential direction and arranged between the inner peripheral wall portion and the outer peripheral wall portion;
at least one of the inner peripheral wall portion and the outer peripheral wall portion has a plurality of guide surfaces that respectively guide the outer peripheries of the plurality of springs;
A spring assembly, wherein the guide surface is curved to fit between the adjacent springs.
The spring assembly according to claim 1, wherein the guide surfaces are formed on the inner peripheral wall portion and the outer peripheral wall portion, respectively.
The spring assembly according to claim 1 or 2, 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.
The spring assembly according to any one of claims 1 to 3, wherein a plurality of said springs are arranged between said guide surfaces adjacent in the circumferential direction on said inner peripheral wall portion or said outer peripheral wall portion.
The spring assembly according to claim 2, wherein the guide surface formed on the inner peripheral wall portion and the guide surface formed on the outer peripheral wall portion are displaced in the circumferential direction.
the inner peripheral wall portion is located on the inner peripheral side of the one substrate when viewed in the axial direction,
6. The spring assembly according to any one of claims 1 to 5, wherein the outer peripheral wall portion is located on the outer peripheral side of the other substrate when viewed in the axial direction.