Return spring piece

Abstract

The invention discloses a return spring piece which is characterized in that one end, along a first direction, of a first substrate is connected with an elastic piece through a transition edge; the two ends, in the second direction, of the first substrate are connected with the second substrate and the third substrate through connecting edges correspondingly. The second substrate is arranged in an L shape, the third substrate is arranged in a U shape, a groove is formed between the second substrate and the third substrate, and the elastic piece is arranged towards the groove; one end, far away from the elastic sheet, of the first substrate protrudes outwards to form a convex block, an opening is formed in the convex block, and the inner wall of the opening is connected with a clamping block; a fourth substrate and a fifth substrate are arranged on the second substrate in the first direction and close to one end of the third substrate in an outward protruding manner; the two ends, in the first direction, of the third base plate are connected with the sixth base plate and the seventh base plate through arc-shaped connecting plates correspondingly. Through the application of the invention, the return spring piece is provided, the device is reasonable in structural design and simple in structure, and the return spring piece simulates the return force and stress change in the braking process.

Description

Technical Field

[0001] The present invention relates to the related technical fields such as the return spring leaf of an automotive chassis, and particularly relates to a return spring leaf. Background Art

[0002] During the development of automotive chassis components, return springs are commonly used to enable components such as friction plates to automatically return after braking. The simulation of their strength and stiffness is an important part of the design process of the braking system. By simulating the stress, displacement, and return force of the return spring during operation, a spring that meets the requirements for the return of the pressurizing mechanism within the braking system can be selected. At the beginning of the design, this can effectively reduce the risks of spring failure, braking system drag, and braking noise.

[0003] However, the existing return spring leaf mechanism of automotive braking systems is too complex, with a high cost, and the elastic performance of the return spring leaf is poor, unable to simulate the return force and stress changes of the return spring leaf during braking. Summary of the Invention

[0004] In view of this, to solve the above problems, the purpose of the present invention is to provide a return spring leaf, which includes:

[0005] A spring leaf body;

[0006] The spring leaf body is provided with a first substrate, a spring piece, a second substrate, and a third substrate;

[0007] One end of the first substrate in the first direction is connected to the spring piece through a transition edge;

[0008] Both ends of the first substrate in the second direction are respectively connected to the second substrate and the third substrate through a connecting edge;

[0009] The second substrate is arranged in an "L" shape, the third substrate is arranged in a "凵" shape, a groove is formed between the second substrate and the third substrate, and the spring piece faces the groove;

[0010] One end of the first substrate in the first direction and away from the spring piece protrudes outwardly to be provided with a convex block, an opening is provided on the convex block, and a clamping block is connected to the inner wall of the opening;

[0011] One end of the second substrate in the first direction and close to the third substrate protrudes outwardly to be provided with a fourth substrate and a fifth substrate;

[0012] Both ends of the third substrate in the first direction are respectively connected to a sixth substrate and a seventh substrate through arc-shaped connecting plates.

[0013] The above-mentioned return spring sheet, wherein the spring sheet includes a first arc portion, a first connecting portion and a limiting portion which are connected in sequence.

[0014] The above-mentioned return spring sheet, wherein the first arc-shaped portion and the limiting portion are both approximately semicircularly arranged, the opening of the first arc-shaped portion faces the first connecting portion, the first connecting portion is arc-shaped, and the opening of the first connecting portion and the opening of the limiting portion both face the groove.

[0015] In the above-mentioned return spring sheet, the first connecting portion is provided with a waist hole.

[0016] In the above-mentioned return spring sheet, the end of the fourth substrate away from the second substrate is tilted inwardly.

[0017] In the above-mentioned return spring sheet, the end of the fifth substrate away from the second substrate is tilted inwardly.

[0018] In the above-mentioned return spring sheet, the end of the third substrate away from the connecting edge is arranged to be inclined outward.

[0019] In the above-mentioned return spring sheet, the sixth substrate includes a second arc-shaped portion, the second connecting portion, and an inclined portion which are connected in sequence.

[0020] In the above-mentioned return spring sheet, the second arc-shaped portion is arranged in an approximately semicircular shape, the opening of the second arc-shaped portion is arranged toward the opening of the third substrate, and the inclined portion is arranged to be inclined outward.

[0021] In the above-mentioned return spring sheet, the third substrate is further provided with a connecting block inclined inwardly at one end along the first direction and close to the groove.

[0022] Compared with the prior art, the above technical solution has the following positive effects:

[0023] Through the application of the present invention, a return spring piece is provided. The device has reasonable structural design, simple structure and low cost, and the return spring piece simulates the return force and stress changes during braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a return spring sheet of the present invention.

[0025] Figure 2 It is a three-dimensional diagram of a return spring sheet of the present invention.

[0026] 1. First substrate; 2. Elastic piece; 21. First arc portion; 22. First connection portion; 23. Limiting portion; 3. Second substrate; 4. Transition edge; 5. Connection edge; 6. Third substrate; 7. Groove; 8. Bump; 9. Opening; 10. Clamping block; 11. Fourth substrate; 12. Fifth substrate; 13. Sixth substrate; 131. Second arc portion; 132. Second connection portion; 133. Tilted portion; 14. Seventh substrate; 15. Waist-shaped hole; 16. Connection block. Detailed implementation manner

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations, but it is not a limitation of the present invention.

[0028] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0029] As Figure 1 to Figure 2 shown, a return spring piece of a preferred embodiment is shown, which includes: a spring piece body.

[0030] The spring piece body is provided with a first substrate 1, an elastic piece 2, a second substrate 3, and a third substrate 6; one end of the first substrate 1 along the first direction is connected to the elastic piece 2 through a transition edge 4; both ends of the first substrate 1 along the second direction are respectively connected to the second substrate 3 and the third substrate 6 through a connection edge 5; the second substrate 3 is arranged in an "L" shape, the third substrate 6 is arranged in a "U" shape, a groove 7 is formed between the second substrate 3 and the third substrate 6, and the elastic piece 2 faces the groove 7; one end of the first substrate 1 along the first direction and away from the elastic piece 2 protrudes outwardly to be provided with a bump 8, an opening 9 is provided on the bump 8, and an inner wall of the opening 9 is connected to a clamping block 10; one end of the second substrate 3 along the first direction and close to the third substrate 6 protrudes outwardly to be provided with a fourth substrate 11 and a fifth substrate 12; both ends of the third substrate 6 along the first direction are respectively connected to a sixth substrate 13 and a seventh substrate 14 through arc-shaped connecting plates.

[0031] In actual use, the present invention simplifies the structure of the return spring piece, so that the return force and stress changes of the return spring piece during the braking process can be simulated by the simulation software Abaqus. First, the model is extracted in Ansa, and the mid-surface mesh is exported. The shell unit is used for simulation in the Abaqus software. Only the return spring piece is retained in the assembly module. According to the specific actual working conditions, the corresponding boundary conditions and displacement parameters are set in the software. The calculation type is static analysis. After all parameter settings are completed, the return spring simulation calculation is performed. When the simulation calculation is completed, the return spring piece return force result and the maximum stress result can be obtained in the result cloud diagram.

[0032] Specifically, the return spring piece can be fixed by the second substrate 3 and the third substrate 6. During the braking process, the second substrate 3 and the third substrate 6 are subjected to the force of the external bracket, and the spring piece 2 is subjected to the force of the external back plate, so that the return spring piece is simultaneously subjected to the combined action of the back plate and the bracket, resulting in deformation of the return spring piece, and the deformation of the return spring piece mainly depends on the stroke of the friction plate, and the main input is the displacement of the friction plate in the direction perpendicular to the disk surface, wherein the friction plate drives the back plate to displace, so that the displacement of the friction plate can be used as the displacement of the return spring piece, and thus input into the simulation software for calculation, so as to obtain the reaction force and stress results of the return spring piece, wherein the return force curve of the return spring piece in the time domain can be obtained in combination with the reaction force result calculation, and whether the return spring piece has failed can also be judged from the stress result.

[0033] Furthermore, the first direction mentioned above is the length direction of the first substrate 1 , and the second direction is the width direction of the first substrate 1 .

[0034] The present invention also has the following implementation modes based on the above:

[0035] Furthermore, a return spring sheet is provided, wherein the spring sheet 2 comprises a first arc-shaped portion 21 , a first connecting portion 22 and a limiting portion 23 which are connected in sequence.

[0036] Furthermore, a return spring sheet is provided, wherein the first arc portion 21 and the limiting portion 23 are both approximately semicircularly arranged, the opening of the first arc portion 21 faces the first connecting portion 22, the first connecting portion 22 is arc-shaped, and the openings of the first connecting portion 22 and the limiting portion 23 both face the groove 7.

[0037] Further, a return spring sheet, wherein the first connection part 22 is provided with a waist hole 15. Specifically, the first connection part 22 can be fixed to an external device, and because the waist hole 15 is a long strip hole, when the first connection part 22 is fixed, the first connection part 22 can also move through the waist hole 15 without affecting the displacement of the first connection part 22.

[0038] Furthermore, a return spring piece, wherein one end of the fourth substrate 11 away from the second substrate 3 is inclined inward. Specifically, the direction in which the fourth substrate 11 faces the opening of the "L"-shaped second substrate 3 is the inside.

[0039] Furthermore, a return spring piece, wherein one end of the fifth substrate 12 away from the second substrate 13 is inclined inward. The direction in which the fifth substrate 12 faces the opening of the "L"-shaped second substrate 3 is the inside.

[0040] Furthermore, a return spring piece, wherein one end of the third substrate 6 away from the connecting edge 5 is inclined outward. Specifically, the direction in which the third substrate 6 faces the outside of the "U"-shaped opening is inclined outward.

[0041] Furthermore, a return spring piece, wherein the sixth substrate 13 includes a second arc portion 131, a second connecting portion 132, and an inclined portion 133 connected in sequence.

[0042] Furthermore, a return spring piece, wherein the second arc portion 131 is arranged in an approximately semicircular shape, the opening of the second arc portion 131 faces the opening of the third substrate 6, and the inclined portion 133 is inclined outward. Specifically, the direction in which the inclined portion 133 faces the outside of the "U"-shaped opening of the third substrate 6 is inclined outward.

[0043] Furthermore, a return spring piece, wherein a connecting block 16 is further provided at one end of the third substrate 6 along the first direction and close to the groove 7 and is inclined inward. Specifically, the direction in which the connecting block 16 faces the "U"-shaped opening of the second substrate 3 is inclined inward.

[0044] The above are only the preferred embodiments of the present invention, and thus do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A return spring sheet, characterized in that: Comprising: The body of the spring piece; The body of the spring piece is provided with a first substrate, a spring piece, a second substrate, and a third substrate; One end of the first substrate in the first direction is connected to the spring piece through a transition edge; Both ends of the first substrate in the second direction are respectively connected to the second substrate and the third substrate through a connecting edge; The second substrate is arranged in an "L" shape, the third substrate is arranged in a "凵" shape, a groove is formed between the second substrate and the third substrate, and the spring piece faces the groove; One end of the first substrate in the first direction and away from the spring piece protrudes outwardly with a convex block, an opening is provided on the convex block, and a clamping block is connected to the inner wall of the opening; One end of the second substrate in the first direction and close to the third substrate protrudes outwardly with a fourth substrate and a fifth substrate; Both ends of the third substrate in the first direction are respectively connected to a sixth substrate and a seventh substrate through arc-shaped connecting plates.

2. A return spring sheet according to claim 1, characterized in that: The spring piece includes a first arc portion, a first connecting portion, and a limiting portion connected in sequence.

3. A return spring sheet according to claim 2, characterized in that: Both the first arc portion and the limiting portion are approximately semicircularly arranged, the opening of the first arc portion faces the first connecting portion, the first connecting portion is arc-shaped, and the openings of the first connecting portion and the limiting portion both face the groove.

4. A return spring sheet according to claim 2, characterized in that: The first connecting portion is provided with an oblong hole.

5. The return spring sheet according to claim 1, characterized in that: One end of the fourth substrate away from the second substrate is inclined inwardly.

6. The return spring sheet according to claim 1, characterized in that: One end of the fifth substrate away from the second substrate is inclined inwardly.

7. The return spring sheet according to claim 1, characterized in that: One end of the third substrate away from the connecting edge is inclined outwardly.

8. The return spring sheet according to claim 1, characterized in that: The sixth substrate includes a second arc portion, a second connecting portion, and an inclined portion connected in sequence.

9. The return spring sheet according to claim 8, characterized in that: The second arc portion is approximately semicircularly arranged, the opening of the second arc portion faces the opening of the third substrate, and the inclined portion is inclined outwardly.

10. The return spring sheet according to claim 8, characterized in that: One end of the third substrate in the first direction and close to the groove is further provided with a connecting block inclined inwardly.

Images