New energy automobile brake piston
By incorporating a buffer chamber and a buffer spring within the brake piston of new energy vehicles, the problems of poor braking smoothness and short lifespan caused by instantaneous brake fluid impact have been solved, resulting in safer, smoother braking performance and a longer service life.
Patent Information
- Application Number
- CN202520136082.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-21
AI Technical Summary
The brake pistons in existing new energy vehicles are instantaneously driven by brake fluid, resulting in poor braking smoothness and short service life.
A buffer chamber is set inside the brake piston body, which includes a limit ring, a buffer plate, a guide slide rod, a positioning ring, and a buffer spring. The buffer spring buffers the instantaneous impact force of the brake fluid, and the wear-resistant ring reduces wear, thereby improving stability and service life.
It improves braking safety and smoothness, extends the service life of brake pistons, and reduces energy consumption.
Smart Images
Figure CN223594812U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of automobile brake pistons, and particularly relates to a new energy automobile brake piston. BACKGROUND
[0002] The new energy automobile brake piston is a key component in a braking system, when a driver steps on a brake pedal, brake fluid in a brake master cylinder is subjected to pressure, is pushed to a piston in a brake caliper through a brake pipeline, the piston is subjected to the action of hydraulic pressure and moves outward, pushes brake pads into close contact with a brake disc, friction is generated, and thus the braking of a vehicle is realized.
[0003] At present, a multi-piston caliper design is usually adopted, the braking force is stronger, the braking is more uniform, and the brake pedal feel is better, and common materials of the new energy automobile brake piston include aluminum alloy, stainless steel, cast iron, ceramic and phenolic resin.
[0004] Among them, the resin piston is a common piston material in the new energy automobile adopting the multi-piston caliper, the density of the resin material is much lower than that of the metal, the use of the resin piston can significantly reduce the weight of the braking system, is helpful to reduce energy consumption, improve the cruising range of the vehicle, and the resin material itself has certain self-lubricating property, can reduce the friction between the piston and the inner wall of the brake caliper in the movement process of the piston, and the resin material also has certain elasticity and damping performance.
[0005] In the prior art, when the brake fluid acts on the brake piston, the brake piston is instantaneously driven to move, the brake piston pushes the brake pads into close contact with the brake disc, not only influences the smoothness of the brake, but also seriously reduces the service life of the brake piston.
[0006] To solve the above problems, the utility model provides a new energy automobile brake piston. UTILITY MODEL CONTENTS
[0007] To solve the above problems in the prior art, the utility model provides a new energy automobile brake piston, which has the characteristics of convenient use and long service life.
[0008] To achieve the above object, the utility model provides the following technical scheme: a new energy automobile brake piston, comprising a brake piston main body, the brake piston main body has a buffer cavity, and further comprising:
[0009] A limiting ring is fixed to the inner wall of the buffer cavity.
[0010] A buffer plate is located in the buffer cavity and behind the limiting ring.
[0011] A guide slide rod is fixed to the inner wall of the buffer cavity and has a guide slide hole through the buffer plate;
[0012] A positioning ring is fixed to the inner wall of the buffer cavity;
[0013] A buffer spring is sleeved on the positioning ring and between the inner wall of the buffer cavity and the buffer plate.
[0014] As a preferred technical scheme of the utility model, the buffer spring is a conical spring.
[0015] As a preferred technical scheme of the utility model, the guide slide rod and the guide slide hole are both distributed with four equidistant intervals in the circumferential direction.
[0016] As a preferred technical scheme of the utility model, the outer wall of the guide slide rod abuts against the inner wall of the guide slide hole.
[0017] As a preferred technical scheme of the utility model, the outer wall of the buffer plate abuts against the inner wall of the buffer cavity.
[0018] As a preferred technical scheme of the utility model, further comprising:
[0019] A wear-resistant ring is fixed to the end face of the brake piston body.
[0020] As a preferred technical scheme of the utility model, the brake piston body, the limiting ring, the positioning ring and the wear-resistant ring are integrally formed by die molding.
[0021] As a preferred technical scheme of the utility model, further comprising:
[0022] A rubber sealing ring is sleeved in the annular clamping groove in the outer wall of the brake piston body.
[0023] Compared with the prior art, the utility model has the beneficial effects that:
[0024] In the utility model, the buffer plate and the buffer spring are arranged to appropriately buffer the brake fluid, so that the brake performance is ensured, the brake pad is avoided from being instantaneously impacted by the brake piston body, the safety of the brake is greatly improved, the service life of the brake piston body is prolonged, and the brake is smoother.
[0025] Other additional advantages and beneficial effects of the utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0026] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:
[0027] Figure 1 is a structural schematic view of the present application;
[0028] Figure 2 is a sectional structural schematic view of the present application;
[0029] Figure 3 is an axonometric structural schematic view of the buffer plate in the present application.
[0030] In the drawing: 1, brake piston main body; 11, buffer cavity; 12, limiting ring; 13, guide sliding rod; 14, annular clamping groove; 15, positioning ring; 16, wear-resistant ring; 2, buffer plate; 21, guide sliding hole; 3, buffer spring; 4, rubber sealing ring. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0032] Please refer to Figures 1-3 The present application provides the following technical solutions: a new energy automobile brake piston, comprising a brake piston main body 1, the brake piston main body 1 has a buffer cavity 11 inside, further comprising: a limiting ring 12, a buffer plate 2, a guide sliding rod 13, a positioning ring 15 and a buffer spring 3.
[0033] Further, by Figures 1-3As shown, in the embodiment, the limiting ring 12 is fixed to the inner wall of the buffer cavity 11, the buffer plate 2 is located in the buffer cavity 11 and behind the limiting ring 12, the guide sliding rod 13 is fixed to the inner wall of the buffer cavity 11, the buffer plate 2 has a guide sliding hole 21 for the guide sliding rod 13 to penetrate, the positioning ring 15 is fixed to the inner wall of the buffer cavity 11, and the buffer spring 3 is sleeved on the positioning ring 15 and located between the inner wall of the buffer cavity 11 and the buffer plate 2. After the above scheme is used, when the driver steps on the brake pedal in use, the brake fluid in the brake master cylinder is subjected to pressure and is pushed to the brake piston body 1 in the brake caliper through the brake pipeline. The brake piston body 1 is moved outward under the action of hydraulic pressure, pushes the brake pad and the brake disc into close contact, generates friction force, and thus the braking of the vehicle is realized. When the brake fluid flows in the brake piston body 1, the buffer plate 2 is first impacted, the buffer plate 2 is moved backward and squeezes the buffer spring 3 after being impacted, the instantaneous impact force of the brake fluid is buffered, then the brake piston body 1 is moved under the pushing action of the brake fluid and the elastic force of the buffer spring 3, the brake pad and the brake disc are pushed into close contact, the braking of the vehicle is realized, the safety of the brake is greatly improved, the service life of the brake piston body 1 is prolonged, and the brake is smoother.
[0034] It should be noted that during the entire brake operation, the buffer spring 3 is first contracted, then the brake fluid pushing force and the buffer spring 3 elastic force jointly push the brake piston body 1 to move, and the instantaneous impact force of the brake fluid is buffered. From the perspective of energy conservation, the energy consumption of the entire process is very small, and the braking performance is not affected.
[0035] Preferably, the buffer spring 3 is a conical spring. Figure 1 and Figure 2 As shown, in the embodiment, the buffer spring 3 is a conical spring. After the above scheme is used, in use, the buffer spring 3 first receives the thrust of the brake piston body 1. Since the spring ring diameter gradually decreases from one end to the other end, in the initial compression stage, the spring ring with a larger diameter can provide a relatively soft buffer force, effectively relieving the instantaneous peak value of the impact force, avoiding the brake system from producing violent vibration due to sudden force, and as the compression degree deepens, the spring ring with a smaller diameter begins to play a role, the stiffness of the spring gradually increases, thereby providing stronger support force, ensuring that the brake piston body 1 can maintain a stable movement state during the entire braking process.
[0036] Preferably, the guide sliding rod 13 and the guide sliding hole 21 are both equally spaced in the circumferential direction. Figure 1 and Figure 2 As shown, in the embodiment, the guide sliding rod 13 and the guide sliding hole 21 are both equally spaced in the circumferential direction. After the above scheme is used, in use, the guide sliding rod 13 and the guide sliding hole 21 are used for guiding the buffer plate 2 and limiting the rotational freedom of the buffer plate 2, avoiding the buffer plate 2 from rotating during work, and improving the stability of the buffer plate 2.
[0037] Preferably, as shown in Figure 1 and Figure 2 , in the embodiment, the outer wall of the guide slide rod 13 abuts the inner wall of the guide slide hole 21, and after the above scheme is adopted, in use, this close-fitting manner further improves the stability of the buffer plate 2, avoiding shaking of the buffer plate 2.
[0038] Preferably, as shown in Figure 1 and Figure 2 , in the embodiment, the outer wall of the buffer plate 2 abuts the inner wall of the buffer cavity 11, and after the above scheme is adopted, in use, this close-fitting manner further improves the stability of the buffer plate 2, avoiding shaking of the buffer plate 2, while ensuring that the brake fluid acts on the buffer plate 2, reducing energy loss.
[0039] Preferably, as shown in Figure 1 and Figure 2 , in the embodiment, it further includes a wear-resistant ring 16, which is fixed to the end face of the brake piston body 1, and after the above scheme is adopted, in use, in the braking process, the wear-resistant ring 16 first contacts the brake pad, and the wear-resistant ring 16 has a certain thickness, which can effectively prevent the brake piston body 1 from directly contacting the brake pad, effectively reducing wear and prolonging the service life of the brake piston body 1.
[0040] It should be noted that the wear-resistant ring 16 can be made of silicon carbide composite material and fixed to the end face of the brake piston body 1 using the existing technology of inlaying process, or can be made of the same material as the brake piston body 1 and integrally formed with the brake piston body 1, the specific selection needs to be made according to the actual use scene.
[0041] Optionally, as shown in Figure 1 and Figure 2 , in the embodiment, the brake piston body 1, the limiting ring 12, the positioning ring 15 and the wear-resistant ring 16 are integrally formed by molding, which has high structural strength and can be produced without complex process, thus reducing production cost.
[0042] Preferably, as shown in Figure 1 and Figure 2 Figure 1 Figure 2 , in the embodiment, it further includes a rubber sealing ring 4, and the brake piston body 1 has an annular clamping groove 14 on the outer wall, and the rubber sealing ring 4 is sleeved in the annular clamping groove 14, and after the above scheme is adopted, in use, the sealing performance of the brake piston body 1 and the brake caliper is improved, the energy consumption is reduced, the brake fluid is fully applied to the brake piston body 1, and unnecessary damage caused by air entering is also avoided.
[0043] The components not described in detail herein are prior art.
[0044] The working principle and use process of the utility model: the utility model's brake piston main part 1, when the driver steps on the brake pedal in use, brake fluid in brake master cylinder is under pressure, is pushed to brake caliper in brake pipe brake piston main part 1, brake piston main part 1 is moved outward under the action of hydraulic pressure, pushes brake pad and brake disc tight contact, generates friction force, thereby realizes the brake of vehicle;
[0045] For the brake piston main part 1 of the utility model, when brake fluid flows in brake piston main part 1, will first impact buffer plate 2, buffer plate 2 will move back and extrude buffer spring 3 after being impacted, buffer the instantaneous impact force of brake fluid, then brake piston main part 1 moves under the driving action of brake fluid and the elastic force of buffer spring 3, finally buffer spring 3 completely contracts, its push brake pad and brake disc tight contact, realize the brake of vehicle, greatly improve the safety of brake, prolong the service life of brake piston main part 1, and make brake more smooth;
[0046] In another aspect of the utility model, in the braking process, the wear-resistant ring 16 contacts the brake pad first, the wear-resistant ring 16 has a certain thickness, which can effectively avoid the direct contact of the brake piston main part 1 with the brake pad, effectively reduce the wear and prolong the service life of the brake piston main part 1.
[0047] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A new energy vehicle brake piston, comprising a brake piston body (1), the brake piston body (1) has a buffer cavity (11) therein, characterized in that, Also comprising: a limiting ring (12) fixed to the inner wall of the buffer cavity (11); a buffer plate (2) located in the buffer cavity (11) and behind the limiting ring (12); a guide sliding rod (13) fixed to the inner wall of the buffer cavity (11) and having a guide sliding hole (21) on the buffer plate (2) for the guide sliding rod (13) to pass through; a positioning ring (15) fixed to the inner wall of the buffer cavity (11); a buffer spring (3) sleeved on the positioning ring (15) and located between the inner wall of the buffer cavity (11) and the buffer plate (2).
2. The brake piston of claim 1, wherein: The buffer spring (3) is a conical spring.
3. The new energy vehicle brake piston according to claim 1, characterized in that: Both the guide sliding rod (13) and the guide sliding hole (21) are equally spaced in the circumferential direction and have four.
4. The new energy vehicle brake piston according to claim 3, characterized in that: The outer wall of the guide sliding rod (13) abuts against the inner wall of the guide sliding hole (21).
5. The new energy vehicle brake piston according to claim 1, characterized in that: The outer wall of the buffer plate (2) abuts against the inner wall of the buffer cavity (11).
6. The new energy vehicle brake piston according to claim 1, characterized in that: Also comprising: a wear-resistant ring (16) fixed to the end face of the brake piston body (1).
7. The new energy vehicle brake piston according to claim 6, characterized in that: The brake piston body (1), the limiting ring (12), the positioning ring (15), and the wear-resistant ring (16) are integrally formed by mold pressing.
8. The new energy vehicle brake piston according to claim 1, characterized in that: Also comprising: a rubber sealing ring (4) ringed in the annular clamping groove (14) on the outer wall of the brake piston body (1).