Brake caliper spring piece

Abstract

The utility model belongs to the field of brakes, and relates to a brake caliper spring piece, which comprises a punch forming spring piece body, and is mainly characterized in that the structure can effectively reduce the occurrence probability of friction abnormal sound while realizing the return of a brake block. The contact area of the return strip and the brake block is effectively reduced, abnormal sound generated by scraping of the pre-pressing contact position of the brake block and the edges with flashes and burrs of the spring piece return strip deformed together with the support due to stress deformation of the support in the braking process is prevented, and the riding comfort is improved.

Description

Technical Field

[0001] This utility model belongs to the field of brakes and relates to a brake caliper spring plate. Background Technology

[0002] As an indispensable component of the braking system, the brake caliper spring pad's main function is to provide a stable reverse thrust to the brake pad through pre-compression contact, thereby achieving the return function after braking and ensuring the normal operation of the brake. In practical applications, when the brake is subjected to external pressure, the braking force is inevitably transmitted to the bracket, causing the bracket to deform to a certain extent. Since the spring pad is usually fixed to the bracket, its structure changes accordingly with the deformation of the bracket. At this time, in order to meet the design requirements of brake pad return, the spring pad's return strip structure always maintains a pre-compression state with the brake pad. Although this pre-compression contact can effectively achieve the return function, it also brings significant technical problems: friction and scratching are prone to occur between the edges of the return strip and the contact surface of the brake pad. Especially during the manufacturing process, it is often difficult to completely avoid the presence of burrs or flash on the edges of the return strip. These tiny surface defects will aggravate the mechanical interaction between the spring pad and the brake pad during braking, leading to friction noise. When the sound pressure level of abnormal noise reaches a certain level, it will be transmitted to the cockpit through the vehicle body structure, directly interfering with the sensory experience of the passengers, reducing the overall comfort of the vehicle, and thus causing complaints and dissatisfaction from end customers.

[0003] In existing technologies, brake caliper spring designs primarily focus on meeting basic return function and structural strength requirements, while the control of friction noise has not received sufficient attention. For example, conventional spring return strips typically employ a flat contact surface design. While this structure facilitates processing and assembly, its larger contact area increases the probability of edge-to-brake pad rubbing when the bracket deforms under stress. Especially in high-frequency braking or prolonged use scenarios, the return strip surface may further deteriorate due to wear, leading to increasingly significant noise problems. Furthermore, existing technologies lack optimization measures for the contact pattern between the return strip and the brake pad, failing to effectively address the potential noise issues caused by burrs or flash. This technological deficiency not only affects the noise performance of the braking system but also limits the potential for improving brake comfort to some extent.

[0004] Meanwhile, with the rapid development of the automotive industry, consumers' demands for driving experience are increasing, especially their focus on vehicle NVH (noise, vibration, and harshness) performance. Braking noise, as a crucial component of NVH, has become a key area of ​​technological research and development for major OEMs. The growing complaints from end-customers about brake noise have driven the industry's urgent need for low-noise braking systems. However, reducing brake noise often requires more complex structural designs or higher-quality materials, inevitably increasing production costs. For example, improving the surface treatment precision of spring plates or using special coatings can reduce friction noise, but these methods significantly increase manufacturing difficulty and economic investment. Furthermore, modern automotive design emphasizes lightweight and universal brake structures to meet energy conservation, emission reduction, and production efficiency requirements, while the introduction of noise control measures often contradicts these goals. For example, adding additional damping components may increase weight, and complex processing techniques may reduce the universality of parts. Therefore, how to effectively reduce friction noise by improving the spring plate structure without significantly increasing cost and complexity, while simultaneously meeting the design requirements of lightweighting and universality, has become a pressing technical challenge in the current brake industry. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a brake caliper spring sheet that can meet the requirements of preventing scraping noise between the return bar and the brake block during braking, while also meeting the requirements of lightweight and universal brake structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a brake caliper spring sheet, comprising a stamped spring sheet body, wherein a boss is provided on the return strip of the spring sheet body, the boss being used to reduce the contact area between the return strip and the brake block, thereby reducing the probability of friction noise during braking, preventing the burrs or rough edges of the return strip from scraping against the pre-pressed contact position of the brake block when the bracket is deformed under stress, thus improving ride comfort.

[0007] Optionally, the boss on the return bar is formed by stamping. The width of the return bar is 6-7mm, the width of the boss is 4.5-5.5mm, the boss and the return bar are connected by an arc, and the height of the boss is 0.15-0.2mm.

[0008] Optionally, the thickness of the spring sheet body is 0.5mm, the material is steel plate, and the boss on the return bar is pre-pressed together with the contact area of ​​the brake block to provide a reverse thrust to the brake block to achieve the return function.

[0009] The beneficial effects of this utility model are as follows: The brake caliper spring sheet of this utility model, by setting a boss structure on the return strip, brings significant technical advantages and practical application value. Compared with the conventional flat return strip design in the prior art, this utility model effectively reduces the contact area between the return strip and the brake pad through the boss. This optimized design can significantly reduce the probability of friction noise during braking, especially avoiding the noise caused by the scraping of the burrs or rough edges of the return strip against the pre-pressurized contact point of the brake pad when the bracket is deformed under stress. This greatly improves the ride comfort of the vehicle and reduces noise complaints from end customers.

[0010] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0012] Fig. 1 This is a schematic diagram of the spring sheet assembly of this utility model;

[0013] Fig. 2 This is a three-dimensional view of the overall installation of this utility model;

[0014] Fig. 3 This is the front view of the present invention.

[0015] Reference numerals: 1. Return bar boss; 2. Spring plate return bar; 3. Brake block; 4. Bracket. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0017] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0018] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0019] Please see Figs. 1-3 This is a brake caliper spring, whose main structure includes a stamped spring body. The spring body has a spring return strip 2, which is formed into a return strip boss 1 through stamping. The return strip boss 1 makes pre-pressed contact with the surface of the brake block 3, providing a reverse thrust to the brake block 3 during braking to achieve the return function and reduce friction noise. The spring body is fixed to a bracket 4 and works in conjunction with other components of the braking system to complete the braking operation.

[0020] In this embodiment, the thickness of the spring sheet body is 0.5mm, and steel plate is used as the material to ensure sufficient strength and lightweight characteristics. The width of the spring sheet return bar 2 is designed to be 6mm, and the width of the return bar boss 1 located on it is 5mm, and the boss height is 0.18mm. The return bar boss 1 and the spring sheet return bar 2 are connected by an arc transition to avoid the generation of sharp edges and ensure the smoothness of the contact surface. The return bar boss 1 is directly formed on the spring sheet return bar 2 by stamping process, which is simple and low cost.

[0021] like Fig. 1 As shown, Fig. 1 The position and shape of the return bar boss 1 on the spring plate return bar 2 are clearly shown. Fig. 2 and Fig. 3 The images show the state of the spring sheet during actual assembly. For example... Fig. 2 As shown, the spring sheet body is fixed on the bracket 4, and the return bar boss 1 on the spring sheet return bar 2 forms a pre-pressure contact with the surface of the brake block 3. Fig. 3The state of the bracket 4 under force during braking is further demonstrated. By reducing the contact area with the brake block 3, the return bar boss 1 effectively avoids the burrs or flashes caused by the deformation of the bracket 4 on the spring plate return bar 2 from rubbing against the brake block 3.

[0022] During operation in this embodiment, when pressure is applied to the brake, the bracket 4 undergoes slight deformation under the braking force, and the spring plate body fixed on the bracket 4 deforms accordingly. At this time, the pre-pressurized contact area between the return bar boss 1 and the brake block 3 can stably provide a reverse thrust, allowing the brake block 3 to quickly return to its original position after braking. Compared with the prior art, due to the presence of the return bar boss 1, the contact area between the spring plate return bar 2 and the brake block 3 is significantly reduced. Even if the bracket 4 deforms, causing the spring plate return bar 2 to deform, its edges will not directly rub or scrape against the brake block 3 over a large area, thereby effectively reducing the probability of friction noise and improving ride comfort.

[0023] The brake caliper spring plate structure in this embodiment is rationally designed and has a simple manufacturing process, achieving the dual goals of noise control and return function without increasing additional material costs. Furthermore, this design has strong versatility and can be widely applied to different types of braking systems, meeting the requirements of lightweight design and practicality.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A brake caliper spring, comprising a stamped spring body, characterized in that, The spring plate body has a boss on the return bar. The boss is used to reduce the contact area between the return bar and the brake block, so as to reduce the probability of friction noise during braking. It also prevents the burrs or rough edges of the return bar from scraping against the pre-pressed contact position of the brake block when the bracket is deformed by force, thereby improving ride comfort.

2. The brake caliper spring according to claim 1, characterized in that: The boss on the return bar is formed by stamping. The width of the return bar is 6-7mm, the width of the boss is 4.5-5.5mm, the boss and the return bar are connected by an arc, and the height of the boss is 0.15-0.2mm.

3. A brake caliper spring according to claim 1, characterized in that: The thickness of the spring plate body is 0.5mm, and the material is steel plate. The boss on the return bar is pre-pressed together with the contact area of ​​the brake block to provide a reverse thrust to the brake block to achieve the return function.

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