JP6934389B2 - Spring assembly - Google Patents

Description

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

Patent Document 1 discloses a spring assembly provided in a clutch mechanism of an automobile. This spring assembly includes a pair of annular substrates, a plurality of compression coil springs provided between the pair of annular substrates, and a shaft member fixed to one annular substrate and extending toward the other annular substrate. And a cylindrical guide member fixed to the other annular substrate and into which a shaft member is inserted. The end turn portions at both ends of the compression coil spring are fitted to the outer peripheral surfaces of the cylindrical protrusions formed on the pair of annular substrates.

Jikkenhei 2-96054

In the technique of Patent Document 1, the countersunk portion of the compression coil spring is wound around the cylindrical protrusion of the annular substrate to fix the compression coil spring to the annular substrate, but the countersunk portion may come off from the cylindrical protrusion. There is a risk that the pair of annular substrates will separate from each other.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a spring assembly having a simple structure capable of restricting the movement of a pair of plates sandwiching a plurality of springs from each other.

In order to solve the above problems, the spring assembly of an embodiment of the present invention is arranged with a plurality of springs facing each other with the plurality of springs interposed therebetween, and the first plate and the first plate urged by the plurality of springs in a direction away from each other. It includes a second plate and a rod-like body that limits the movement of the first plate and the second plate in the distance direction. The first plate has a plurality of first wall portions erected toward the second plate. The second plate has a plurality of second wall portions erected toward the first plate. The first wall portion has a first regulating surface that regulates the movement of the first plate away from the second plate by abutting against the rod-shaped body. The second wall portion has a second regulating surface that regulates the movement of the second plate away from the first plate by abutting against the rod-shaped body.

According to the present invention, it is possible to provide a spring assembly having a simple structure capable of restricting the movement of a pair of plates sandwiching a plurality of springs from each other.

It is a perspective view of the spring assembly of 1st Example. It is an exploded view of a spring assembly. FIG. 3A is a top view of the spring assembly, and FIG. 3B is a side view of the spring assembly. FIG. 3A is a cross-sectional view taken along the line segment AA of the spring assembly shown in FIG. 3A. It is a figure for demonstrating the contraction operation of a spring assembly. It is a perspective view of the spring assembly of a modification. It is sectional drawing BB of the line segment BB of the spring assembly shown in FIG.

FIG. 1 is a perspective view of the spring assembly 10 of the first embodiment. Further, FIG. 2 is an exploded view of the spring assembly 10. The spring assembly 10 is provided in the clutch mechanism of the transmission of the vehicle, functions as an elastic body for returning the position of the piston, and is provided on the outer or inner circumference of the pipe member. The spring assembly 10 can be expanded and contracted in the axial direction to urge the piston. The axial direction refers to the direction along the central axis of the annular spring assembly 10.

The spring assembly 10 includes a first plate 20, a second plate 22, a third plate 24, a rod-shaped body 26, a first spring 28, and a second spring 30.

The first plate 20 is formed in an annular shape and has a first wall portion 32, a first base portion 36, a first support portion 38, and a guide portion 40. A plurality of first wall portions 32 are erected in the axial direction from the outer edge of the first base portion 36, that is, erected from the first base portion 36 toward the second plate 22, and are separated from each other in the circumferential direction. The first protruding portion 34 protrudes outward in the radial direction from the tip end side of the first wall portion 32 and can be caught by the rod-shaped body 26.

A plurality of first support portions 38 are formed in a protruding shape on the first base portion 36, and enter the first spring 28 to support the first spring 28. The first support portion 38 is formed according to the inner diameter of the first spring 28, and is formed so as to be separated from each other in the circumferential direction. The first support portion 38 is wound around the end turn portion of the first spring 28 to fix the first spring 28.

The guide portion 40 is formed by bending on the inner peripheral edge of the first base portion 36 to prevent the first spring 28 from coming off. Further, the guide portion 40 is provided so as to be in contact with the guide portion 49 of the second plate 22, and may function as a stopper for limiting excessive contraction of the spring assembly 10.

The second plate 22 is formed in an annular shape and is arranged to face the first plate 20 with the first spring 28 interposed therebetween. The second plate 22 has a second wall portion 42, a second base portion 46, a second support portion 48, and a guide portion 49.

A plurality of the second wall portions 42 are erected in the axial direction from the outer edge of the second base portion 46, that is, erected from the second base portion 46 toward the first plate 20, and are separated from each other in the circumferential direction. The second protruding portion 44 projects radially outward from the tip end side of the second wall portion 42 and can be caught by the rod-shaped body 26.

A plurality of second support portions 48 are formed on the second base portion 46 in a protruding shape, and enter the end turn portion of the first spring 28 to support the first spring 28. The second support portion 48 is formed according to the inner diameter of the first spring 28, and is formed so as to be separated from each other in the circumferential direction. The second support portion 48 is wound around the end turn portion of the first spring 28 to fix the first spring 28.

The guide portion 49 is formed by bending on the inner peripheral edge of the second base portion 46 to prevent the first spring 28 from coming off. The third support portion 50 is formed by being recessed in the second base portion 46, and receives and supports the second spring 30. The third support portion 50 is a recess formed by bossing the second support portion 48.

The first spring 28 is provided between the first plate 20 and the second plate 22 and urges the first plate 20 and the second plate 22 in a direction away from the first plate 20 and the second plate 22. The plurality of first springs 28 include coil springs having different spring diameters. One end of the first spring 28 is supported by the first support portion 38, and the other end of the first spring 28 is supported by the second support portion 48. The urging direction of the first spring 28 is along the axial direction of the spring assembly 10.

The third plate 24 is formed in an annular shape and has a fourth support portion (not shown) that supports the second spring 30. The fourth support portion is formed in a protruding shape and is inserted into the end turn portion of the second spring 30. The second spring 30 is provided between the second plate 22 and the third plate 24 and urges the second plate 22 and the third plate 24 in a direction away from each other. By providing the first spring 28 and the second spring 30 in different layers, the spring characteristics of the spring assembly 10 can be set stepwise.

The rod-shaped body 26 is formed in an annular shape having a slit 26a. The rod-shaped body 26 is provided on the outer periphery of the spring assembly 10, is located outside the first wall portion 32 and the second wall portion 42, and is sandwiched between the first protruding portion 34 and the second protruding portion 44. As a result, the rod-shaped body 26 limits the movement of the first plate 20 and the second plate 22 in the distant direction. By providing the slit 26a, the rod-shaped body 26 can be easily assembled, and the first plate 20 and the second plate 22 can be easily integrated.

FIG. 3A is a top view of the spring assembly 10, and FIG. 3B is a side view of the spring assembly 10. The spring assembly 10 shown in FIG. 3A has an annular shape, but the present invention is not limited to this mode, and the spring assembly 10 may be formed in an arc shape or a linear shape.

As shown in FIG. 3B, the rod-shaped body 26 is vertically sandwiched by the plurality of first protrusions 34 and the plurality of second protrusions 44. The first spring 28 is urged away from the first plate 20 and the second plate 22, but the movement of the first plate 20 and the second plate 22 in the away direction is restricted by the rod-shaped body 26. As a result, the spring assembly 10 can be integrated to facilitate transportation and parts management.

As shown in FIG. 3B, the first wall portion 32 and the second wall portion 42 are arranged so as to be displaced in the circumferential direction, and the second wall portion 42 is arranged between the first wall portions 32. As a result, the first wall portion 32 and the second wall portion 42 are configured so as not to interfere with each other when the spring assembly 10 expands and contracts.

The second wall portion 42 is adjacent to the first wall portion 32, and the side surfaces of the second wall portion 42 and the first wall portion 32 face each other. The second wall when the first plate 20 moves in the arrangement direction of the plurality of first springs 28 and is displaced with respect to the second plate 22, that is, when the first plate 20 and the second plate 22 rotate relative to each other. The portion 42 hits the first wall portion 32 and restricts the movement. That is, the side portions of the first wall portion 32 and the second wall portion 42 function as stoppers for stopping the relative rotation of the first plate 20 and the second plate 22.

As a result, it is possible to prevent the first spring 28 from coming off due to the relative rotation of the first plate 20 and the second plate 22. Further, a configuration for restricting the relative rotation of the first plate 20 and the second plate 22 and a configuration for integrating the first plate 20 and the second plate 22 are provided on the edge of the first plate 20 or the second plate 22. Therefore, a sufficient space for arranging the first spring 28 can be secured. In addition, as a configuration for restricting the relative rotation of the first plate 20 and the second plate 22, the side surface of the first wall portion 32 and the second protruding portion 44 are provided so as to be in contact with each other, or the side surface of the second wall portion 42. It may be realized by providing the first protruding portion 34 so as to be in contact with each other.

FIG. 4 is a cross-sectional view taken along line AA of the spring assembly 10 shown in FIG. 3A. The first spring 28 is supported by the first support portion 38 and the second support portion 48, and urges the first plate 20 and the second plate 22 so as to separate from each other.

The first wall portion 32 and the second wall portion 42 intersect when viewed in the circumferential direction. The first protruding portion 34 projects from the tip end to form the first regulating surface 34a. The second protruding portion 44 projects from the tip end to form the second regulating surface 44a. Due to the urging of the first spring 28, the first base 36 and the second base 46 receive a force in the direction of separation, while the first regulation surface 34a and the second regulation surface 44a receive the force in the direction of approaching the rod-shaped body. Hold 26. In the free state spring assembly 10 to which no external force is applied, the first regulating surface 34a and the second regulating surface 44a are in a state of sandwiching the rod-shaped body 26.

The first protruding portion 34 is located on the second base portion 46 side from the first base portion 36 by the first wall portion 32 beyond the rod-shaped body 26, and the first regulating surface 34a of the first protruding portion 34 hits the rod-shaped body 26. It restricts the first plate 20 from coming into contact with the second plate 22. The second protruding portion 44 is located on the side of the first base portion 36 from the second base portion 46 by the second wall portion 42 beyond the rod-shaped body 26, and the second regulation surface 44a of the second protruding portion 44 becomes the rod-shaped body 26. It restricts the second plate 22 from coming into contact with the first plate 20. As a result, the first plate 20 and the second plate 22 can be integrated.

FIG. 5 is a diagram for explaining the contraction operation of the spring assembly 10. FIG. 5A shows a spring assembly 10 in a normal state, and shows a state in which an axial load for contracting the spring assembly 10 is not applied. When the spring assembly 10 is pushed by a piston or the like, the second spring 30, which is more flexible than the first spring 28, contracts significantly.

As shown in FIG. 5B, the spring assembly 10 is further pushed so that the third plate 24 approaches and contacts the second plate 22. Further, when the spring assembly 10 is pushed, only the first spring 28 contracts, so that the spring characteristics of the spring assembly 10 change.

As shown in FIG. 5 (c), the spring assembly 10 is further pushed, the first spring 28 contracts, the first regulation surface 34a separates from the rod-shaped body 26, and the second plate 22 approaches the first plate 20. do. The guide portion 40 and the guide portion 49 come into contact with each other to stop the approach of the first plate 20 and the second plate 22. When the first plate 20 and the second plate 22 approach against the first spring 28, at least one of the first regulation surface 34a and the second regulation surface 44a is separated from the rod-shaped body 26. In this way, the rod-shaped body 26 sandwiched between the first regulation surface 34a and the second regulation surface 44a is separated from one of the regulation surfaces to facilitate the start of approaching the first plate 20 and the second plate 22.

FIG. 6 is a perspective view of the spring assembly 100 of the modified example. Further, FIG. 7 is a cross-sectional view taken along line BB of the spring assembly 100 shown in FIG. The first plate 120 shown in FIG. 6 is characterized in that the first wall portion 132 is inclined as compared with the first plate 20 shown in FIG. 4, and the overhanging portion 60 and the engaging hole portion 62 are provided. different. Further, the second plate 122 shown in FIG. 6 is different from the first plate 20 shown in FIG. 4 in that the contact portion 64 is provided.

The first wall portion 132 has an inclined surface 132a that is inclined with respect to the opposite direction of the first plate 20 and the second plate 22. The inclined surface 132a is formed on the outer surface of the first wall portion 132 and is inclined with respect to the axial direction of the spring assembly 10. On the other hand, the second wall portion 42 is not inclined and is erected along the axial direction of the spring assembly 10. The inclined surface 132a inclines so as to project outward in the radial direction as it extends toward the second plate 22. The rod-shaped body 26 may be configured to be in contact with the second wall portion 42 while not in contact with the first wall portion 132 by utilizing the elastic force inward in the radial direction of the rod-shaped body 26.

As a result, as the first plate 20 and the second plate 22 approach each other, the rod-shaped body 26 separates from the inclined surface 132a, so that the rod-shaped body 26 approaches the first wall portion 132 when the first plate 20 and the second plate 22 approach each other. The first plate 20 and the second plate 22 can approach each other smoothly without rubbing, and preset spring characteristics can be realized.

The contact portion 64 is formed in a convex shape on the second base portion 46 of the second plate 122, has a lower axial height than the second wall portion 42, and can contact the rod-shaped body 26. When the first plate 120 and the second plate 122 approach each other, the contact portion 64 comes into contact with the rod-shaped body 26 and pushes the rod-shaped body 26 toward the first plate 120.

The overhanging portion 60 is formed so as to project outward in the radial direction from the middle of the first wall portion 132. When the first plate 120 and the second plate 122 approach each other and the contact portion 64 pushes the rod-shaped body 26 toward the first plate 120, the overhanging portion 60 stops the movement of the rod-shaped body 26. As a result, the overhanging portion 60 and the contacting portion 64 function as stoppers for stopping the approach of the first plate 120 and the second plate 122.

Further, an engaging hole portion 62 is formed in the first wall portion 132, and the end portion 26b of the rod-shaped body 26 bends into the engaging hole portion 62. As a result, the rod-shaped body 26 can be stably held. Further, when the first plate 120 and the second plate 122 approach each other and the contact portion 64 pushes the rod-shaped body 26 toward the first plate 120, the end portion 26b of the rod-shaped body 26 becomes the engaging hole portion 62. It hits the edge of the first plate 120 and the second plate 122 is stopped from approaching.

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

In the embodiment, the spring assembly 10 uses the first spring 28 and the second spring 30 to show a mode in which the spring assembly has two stages of spring characteristics, but the present invention is not limited to this mode, and the spring assembly 10 is the second spring 30. And the configuration may not have the third plate 24.

Further, in the embodiment, the mode in which the first wall portion 32 and the second wall portion 42 are erected on the outer edges of the first plate 20 and the second plate 22 is shown, but the present invention is not limited to this mode, and the first plate 20 and The mode may be such that it is erected on the inner edge of the second plate 22. When the first wall portion and the second wall portion are erected on the inner edges of the first plate 20 and the second plate 22, the first protruding portion and the second protruding portion project inward in the radial direction, and the rod-shaped body 26 is the first. It is sandwiched between the first protruding portion and the second protruding portion on the radial inside of the first wall portion and the second wall portion. In this modification, the spring assembly can be easily attached to the inner peripheral side of the pipe member.

Further, in the embodiment, the first wall portion 32 and the second wall portion 42 are formed with the first protrusion 34 and the second protrusion 44 to sandwich the rod-shaped body 26, but the embodiment is limited to this mode. No. For example, the first wall portion 32 and the second wall portion 42 may be formed with a regulation hole portion as a first regulation surface and a second regulation surface that regulate the movement of the rod-shaped body 26. In this case, the rod-shaped body 26 is formed with a plurality of protruding portions bent so as to protrude inward in the radial direction so as to enter the regulation holes of the first wall portion 32 and the second wall portion 42. Also in this modification, the first regulating surface of the first wall portion 32 abuts on the rod-shaped body 26 to restrict the first plate 20 from separating from the second plate 22, and the second regulating surface of the second wall portion 42 Is in contact with the rod-shaped body 26 and restricts the second plate 22 from separating from the first plate 20.

Further, the rod-shaped body 26 may be fixed to one of the wall portions of the first wall portion 32 and the second wall portion 42 by caulking. For example, the second protruding portion of the second wall portion 42 may be curved to surround and fix the rod-shaped body 26.

10 Spring assembly, 20 1st plate, 22 2nd plate, 24 3rd plate, 26 rod-shaped body, 26a slit, 26b end, 28 1st spring, 30 2nd spring, 32 1st wall, 34 1st Protrusion, 34a 1st regulation surface, 36 1st base, 38 1st support, 40 guide, 42 2nd wall, 44 2nd protrusion, 44a 2nd regulation surface, 46 2nd base, 48 2nd Support part, 49 guide part, 50 third support part, 132a inclined surface.

Claims (4)

With multiple springs
A first plate and a second plate which are arranged so as to face each other with the plurality of the springs interposed therebetween and are urged by the plurality of the springs in a direction away from each other.
The first plate and the rod-shaped body that restricts the movement of the second plate in the distance direction are provided.
The first plate has a plurality of first wall portions erected toward the second plate.
The second plate has a plurality of second wall portions erected toward the first plate.
The first wall portion has a first projecting portion that projects from the tip end and abuts on the rod-shaped body to regulate the movement of the first plate away from the second plate.
The second wall portion has a second projecting portion that projects from the tip end and abuts on the rod-shaped body to regulate the movement of the second plate away from the first plate.
The rod-shaped body is a spring assembly characterized in that the first plate and the second plate are sandwiched in a direction facing each other by the first protruding portion and the second protruding portion. The first protrusion and the second protrusion sandwich the rod-shaped body by the urging of the spring, and when the first plate and the second plate approach against the spring, the first protrusion The spring assembly according to claim 1, wherein at least one of the portion and the second protruding portion is separated from the rod-shaped body. With multiple springs
A first plate and a second plate which are arranged so as to face each other with the plurality of the springs interposed therebetween and are urged by the plurality of the springs in a direction away from each other.
The first plate and the rod-shaped body that restricts the movement of the second plate in the distance direction are provided.
The first plate has a plurality of first wall portions erected toward the second plate.
The second plate has a plurality of second wall portions erected toward the first plate.
The first wall portion has a first regulating surface that regulates the movement of the first plate away from the second plate by abutting on the rod-shaped body.
The second wall portion has a second regulating surface that regulates the movement of the second plate away from the first plate by abutting on the rod-shaped body.
The first wall portion is erected from the edge of the first plate.
The second wall portion is erected from the edge of the second plate and is adjacent to the first wall portion, and when the first plate moves in the arrangement direction of the plurality of springs, it hits the first wall portion. , A spring assembly characterized in that movement of the springs in the arrangement direction is restricted. With multiple springs
A first plate and a second plate which are arranged so as to face each other with the plurality of the springs interposed therebetween and are urged by the plurality of the springs in a direction away from each other.
The first plate and the rod-shaped body that restricts the movement of the second plate in the distance direction are provided.
The first plate has a plurality of first wall portions erected toward the second plate.
The second plate has a plurality of second wall portions erected toward the first plate.
The first wall portion
A first protruding portion that projects from the tip and abuts on the rod-shaped body to regulate the movement of the first plate away from the second plate.
It has an inclined surface that is inclined with respect to the direction in which the first plate and the second plate are opposed to each other.
The second wall portion has a second projecting portion that projects from the tip end and abuts on the rod-shaped body to regulate the movement of the second plate away from the first plate.
A spring assembly characterized in that the rod-shaped body separates from the inclined surface as the first plate and the second plate approach each other.

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