Elastic return structure for a braking system

Abstract

The utility model discloses an elastic reset structure for brake system, including a pair of friction plate of setting in the brake disc both sides, the friction plate is driven by piston and is close to the brake disc or away from the brake disc, its characterized in that, the friction plate includes the first friction plate and the second friction plate of configuring in the brake disc both sides, the first friction plate is adjacent with the piston, is provided with reset spring between the first friction plate and the piston, reset spring absorbs energy compression when the piston stretches out and releases when the piston recovers and provides auxiliary force. Utilize the design plane arrangement structure of rectangular shape, add reset spring in the limited space between piston end face and friction plate, guarantee the stress balance of spring in the compression and release process simultaneously, avoid the deflection or overturn, guarantee its work reliability and durability.

Description

Technical Field

[0001] This utility model relates to the field of braking systems, and in particular to an elastic reset structure for braking systems. Background Technology

[0002] In existing automotive disc brake systems, the braking process relies on a hydraulically driven piston extending to push one friction pad against the brake disc. Simultaneously, the reaction force of the caliper body causes the other friction pad to move synchronously, thus clamping the rotating brake disc to achieve braking. When the brake is released and the hydraulic pressure dissipates, the piston's return force is often insufficient and the response is slow, easily leading to incomplete separation between the friction pad and the brake disc, resulting in a "drag" phenomenon. Dragging not only increases unnecessary driving resistance and reduces fuel economy but also causes abnormal wear on the friction pad and brake disc. Furthermore, in conditions requiring frequent intermittent braking, the slow instantaneous response of the system prolongs the brake free travel, affecting brake feel and driving safety. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide an elastic reset structure for a braking system to solve the problems of sluggishness and slow instantaneous response during braking system reset.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An elastic reset structure for a braking system includes a pair of friction pads disposed on both sides of a brake disc. The friction pads are driven by a piston to move closer to or away from the brake disc. The friction pads include a first friction pad and a second friction pad disposed on both sides of the brake disc. The first friction pad is adjacent to the piston. A reset spring is disposed between the first friction pad and the piston. The reset spring absorbs energy and compresses when the piston extends and releases when the piston retracts to provide an auxiliary force.

[0005] Furthermore, the return spring provides the auxiliary force through a pair of return clips arranged opposite each other, one end of which abuts against the end face of the piston.

[0006] Furthermore, the reset spring also includes at least one stabilizing clamp.

[0007] Furthermore, the reset spring is rectangular, and the pair of reset clips are located on opposite sides of the rectangle.

[0008] Furthermore, the piston has a rod extending toward the friction plate, and the return spring is fixed to the rod.

[0009] Furthermore, the reset clamp is a butterfly spring.

[0010] Furthermore, the pair of friction plates are configured to move synchronously on the clamp body.

[0011] Furthermore, the clamp body is connected to the piston via a linkage mechanism, and the clamp body moves through the extension and retraction of the piston.

[0012] Furthermore, the braking system is a single-piston braking system.

[0013] The beneficial effects of this utility model are as follows: The elastic reset structure of the braking system provided by this utility model utilizes a rectangular planar layout to add a reset spring in the limited space between the piston end face and the friction plate. This ensures that the spring is subjected to balanced force during compression and release, avoids skewing or overturning, and guarantees its reliability and durability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 yes Figure 1 AA sectional view.

[0017] Figure 3 This is a schematic diagram of the assembly of the piston and the return spring.

[0018] Figure 4 This is an exploded view of the piston and return spring. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature, but do not exclude the presence of one or more other features.

[0021] In the specification, when an element is described as being "on," "fixed" to, "connected" to, or "joined" to another element, the element may be directly located on, fixed to, connected to, joined to, or in contact with the other element, or there may be an intermediate element present. In the specification, the description of a feature being arranged "adjacent" to another feature may refer to a feature having a portion that overlaps with the adjacent feature or a portion located above or below the adjacent feature.

[0022] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

[0023] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0024] Figure 1 and Figure 2 An automotive braking system is shown, which mainly includes a frame 10 and a piston 50 and a caliper 20 disposed on the frame 10. A pair of friction pads 30a and 30b are arranged opposite each other within the caliper 20, and a brake disc 40 is clamped between the pair of friction pads 30a and 30b. When the vehicle is in motion, the brake disc 40 rotates with the wheel hub (not shown in the figure), and the piston 50 pushes the pair of friction pads 30a and 30b to move towards each other, thereby clamping the brake disc 40 and achieving deceleration and braking.

[0025] Reference Figure 3 and Figure 4A return spring 60 is provided between the friction plate 30a and the piston 50. Considering the limited space at this location, the return spring 60 is positioned on the end face 50a of the piston 50 facing the friction plate 30a. The piston 50 has a rod 51 extending from this end face 50a, and the return spring 60 is specifically fixed to this rod 51. During braking, the piston 50 extends under the pressure of the brake fluid. One end of the piston presses against the friction plate 30a via the return spring 60, while the other end pulls the friction plate 30b to move via a linkage mechanism and a clamp 20. The return spring 60 has a pair of return clips 61 and a limiting clip 63. The pair of return clips 61 are positioned on both sides of the return spring 60 and abut against the end face 50a of the piston rod 50. When the system brakes, the piston 50 presses against the friction plate 30a via the return spring 60, and the return clips 61 compress and absorb energy; when the braking system is released, the return clips 61 simultaneously release energy to provide a restoring force to the piston 50. This structure addresses the piston end face 50a to solve the problem of piston lag during return, reducing braking internal resistance and enabling the brake disc 40 and friction pad 30a to quickly return to a reasonable distance, thus improving the instantaneous response of the braking system. The limiting clip 63 is positioned on a different side from the return clip 61 to help the return spring 60 maintain balance during elastic deformation.

[0026] In some embodiments, the reset clip 61 is a butterfly spring that bends and deforms during energy absorption.

[0027] In some embodiments, the contact plane between the return spring 60 and the friction plate 30a is rectangular, the return clips 61 are located on opposite sides, and the limiting clips 63 are located on adjacent sides of the return clips 61. In this way, the return clips 61 are relatively balanced when compressed, and the return clips 61 prevent overturning.

[0028] In some implementations, this return structure is particularly suitable for larger piston models, taking into account the volume of the return spring 60. Typically, there is only one piston 50, meaning the braking system is a disc brake system with a single piston.

[0029] In some embodiments, several hollow grooves are also provided on the contact plane of the return spring 60. This is to reduce weight and improve the heat dissipation efficiency of this part.

Claims

1. A resilient reset structure for a braking system, comprising a pair of friction pads disposed on both sides of a brake disc, the friction pads being driven by a piston to move closer to or away from the brake disc, characterized in that, The friction pads include a first friction pad and a second friction pad disposed on both sides of the brake disc. The first friction pad is adjacent to the piston. A return spring is provided between the first friction pad and the piston. The return spring absorbs energy and compresses when the piston extends and releases when the piston retracts to provide auxiliary force.

2. The elastic reset structure for a braking system as described in claim 1, characterized in that, The return spring provides the auxiliary force through a pair of return clips arranged opposite each other, one end of which abuts against the end face of the piston.

3. The elastic reset structure for a braking system as described in claim 2, characterized in that, The return spring also includes at least one stabilizing clamp.

4. The elastic reset structure for a braking system as described in claim 2, characterized in that, The reset spring is rectangular, and the pair of reset clips are located on opposite sides of the rectangle.

5. The elastic reset structure for a braking system as described in claim 2, characterized in that, The piston has a rod extending toward the first friction plate, and the return spring is fixed to the rod.

6. The elastic reset structure for a braking system as described in claim 2, characterized in that, The reset clamp is a butterfly spring.

7. The elastic reset structure for a braking system as described in any one of claims 1 to 6, characterized in that, The first and second friction plates are configured to move synchronously on the clamp body.

8. The elastic reset structure for a braking system as described in claim 7, characterized in that, The clamp body is connected to the piston via a linkage mechanism, and the clamp body moves as the piston extends and retracts.

9. The elastic reset structure for a braking system as described in claim 1, characterized in that, The braking system is a single-piston braking system.

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