Automobile brake piston convenient to disassemble and assemble

Abstract

The utility model belongs to the technical field of automobile brake pistons, and particularly relates to an automobile brake piston convenient to disassemble and assemble, which comprises a brake piston main body and a plurality of reinforcing rods, an inner cavity is arranged in the brake piston main body, and the plurality of reinforcing rods are fixed on the inner wall of the inner cavity at equal intervals along the circumferential direction; the force application plate is fixed to the head end of the brake piston body, and a dismounting hole is formed in the center of the force application plate; according to the brake piston, through the arrangement of the force application plate and the dismounting hole, the inner cavity and the dismounting hole form a T-shaped structure, the brake piston body can be conveniently pulled out with the help of a tool, dismounting is more convenient and safer, the brake piston body can be dismounted, overhauled or replaced easily, the integrity of the structure of the brake piston body can be guaranteed, and the service life of the brake piston body is prolonged. And the problem of unnecessary accidental injury is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile brake pistons, and particularly relates to an automobile brake piston convenient to disassemble and assemble. BACKGROUND

[0002] The automobile brake piston is a key component in the automobile brake system, when the driver steps on the brake pedal, the brake fluid in the brake master cylinder is subjected to pressure, is pushed to the piston in the brake caliper through the brake pipeline, the piston is subjected to the action of hydraulic pressure and moves outward, pushes the brake pad into close contact with the brake disc, friction is generated, and thus the brake of the vehicle is realized.

[0003] The common materials of the automobile brake piston currently include aluminum alloy, stainless steel, cast iron, ceramic and phenolic resin.

[0004] Among them, the resin piston is a common piston material, 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 brake system, helps to reduce the energy consumption, improves 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 during the movement of the piston, and the resin material also has certain elasticity and damping performance.

[0005] In the prior art, the automobile brake piston is mostly in a circular tube structure, the volume is not large, and because the automobile brake piston is installed on the inner side of the brake caliper, when the automobile brake piston needs to be repaired or replaced, disassembly is inconvenient, and even if tools are used, the automobile brake piston cannot be safely disassembled, and misoperation is prone to occur.

[0006] To solve the above problems, the utility model provides a kind of automobile brake piston convenient to disassemble and assemble. UTILITY MODEL CONTENTS

[0007] To solve the above problems in the prior art, the utility model provides a kind of automobile brake piston convenient to disassemble and assemble, with the characteristics of convenient use and easy disassembly.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a kind of automobile brake piston convenient to disassemble and assemble, including brake piston main body, the brake piston main body has inner cavity in, still include:

[0009] Reinforcing rod, a plurality of reinforcing rods are fixed to the inner wall of the inner cavity in the circumferential direction at equal intervals;

[0010] Force plate, the force plate is fixed to the first end of the brake piston main body, and there is a disassembly hole at the center position of the force plate.

[0011] As a preferred technical scheme of the utility model, it further includes:

[0012] A plurality of wear-resistant rings are arranged in a nested manner and fixed to the end face of the force applying plate, and the plurality of wear-resistant rings are coaxial.

[0013] As a preferred technical scheme of the utility model, the axial length of the wear-resistant ring gradually increases from outside to inside.

[0014] As a preferred technical scheme of the utility model, the reinforcing rod, the force applying plate and the wear-resistant ring are integrally formed by molding.

[0015] As a preferred technical scheme of the utility model, a spiral flow guide groove is formed on the outer wall of the brake piston body.

[0016] As a preferred technical scheme of the utility model, a flow guide inclined surface is formed at the tail end of the brake piston body.

[0017] As a preferred technical scheme of the utility model, the utility model further comprises:

[0018] A rubber sealing ring is sleeved in the annular clamping groove formed on the outer wall of the brake piston body.

[0019] As a preferred technical scheme of the utility model, the outer wall of the rubber sealing ring is tightly attached to the inner wall of the annular clamping groove.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] In the utility model, the force applying plate and the dismounting hole are arranged, so that the inner cavity and the dismounting hole form a "T" shaped structure, the brake piston body can be pulled out with the aid of a tool, and the brake piston body is convenient and safe to dismount, easy to dismount, overhaul or replace, and the integrity of the brake piston body structure can be ensured, and unnecessary injury problems can be avoided.

[0022] Other additional advantages and beneficial effects of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0024] Figure 1 It is a structural schematic view of the utility model;

[0025] Figure 2 It is a sectional structure schematic view of the utility model;

[0026] Figure 3 For the utility model Figure 2 A place amplification structure schematic view in the utility model;

[0027] Figure 4 For the utility model A place amplification structure schematic view in the utility model;

[0028] Figure 5 For the utility model Figure 2 B place amplification structure schematic view in the utility model.

[0029] In the drawing: 1, brake piston main body;11, guide groove;12, inner chamber;13, guide inclined surface;14, reinforcing rod;15, force plate;151, dismounting hole;152, wear ring;16, annular clamping groove;2, rubber sealing ring. Specific implementation

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Please refer to Figures 1-5 The utility model provides the following technical scheme: a convenient to dismount automobile brake piston, including brake piston main body 1, brake piston main body 1 has inner chamber 12 in, still include: reinforcing rod 14 and force plate 15.

[0032] Further, as shown by Figure 1 And Figure 2 In the embodiment, a plurality of reinforcing rods 14 are fixed to the inner wall of the inner chamber 12 in the circumferential direction at equal intervals, the force plate 15 is fixed to the first end of the brake piston main body 1, and the dismounting hole 151 is formed at the center position of the force plate 15. After using the above-mentioned scheme, the inner chamber 12 and the dismounting hole 151 form a "T" shape structure, which can be easily pulled out by the brake piston main body 1 with the help of tools, and the dismounting is more convenient, safe and easy to dismount, overhaul or replace the brake piston main body 1, and can ensure the integrity of the structure of the brake piston main body 1, avoiding unnecessary injury problems.

[0033] For example, when disassembling the brake piston body 1, a round pin with a diameter smaller than the diameter of the disassembly hole 151 and an axial length greater than the diameter of the disassembly hole 151 can be used. The middle part of the round pin is fixed by a pull rope, and the round pin is inserted through the disassembly hole 151. By pulling the pull rope, the brake piston body 1 can be easily removed. Finally, the round pin is removed from the brake piston body 1.

[0034] Preferably, by Figures 1-3 As shown in the embodiment, the plurality of wear-resistant rings 152 are nested and fixed to the end face of the force applying plate 15, and the plurality of wear-resistant rings 152 are coaxial. After using the above-mentioned scheme, when the brake piston body 1 is in action, the wear-resistant ring 152 first contacts the brake pad, avoiding the wear caused by the direct contact between the brake piston body 1 and the brake pad, and prolonging the service life of the brake piston body 1.

[0035] Preferably, by Figures 1-4 As shown in the embodiment, the axial length of the wear-resistant ring 152 gradually increases from the outside to the inside. After using the above-mentioned scheme, in the initial stage of braking, the smaller diameter wear-resistant ring 152 first contacts the brake pad, generating a larger unit area pressure, which can quickly make the brake pad adhere to the brake disc, shortening the braking response time. As the braking process progresses, the larger diameter part participates in action in turn, gradually increasing the braking force, realizing the linear growth of the braking force, avoiding the abrupt feeling during braking, and making the braking process more stable.

[0036] Preferably, by Figures 1-4 As shown in the embodiment, the reinforcing rod 14, the force applying plate 15 and the wear-resistant ring 152 are integrally formed by molding, which has high structural strength.

[0037] Preferably, by Figure 1 and Figure 2 As shown in the embodiment, the outer wall of the brake piston body 1 is processed with a spiral flow guide groove 11. After using the above-mentioned scheme, when the brake system is working, the brake oil pushes the brake piston body 1 under the action of pressure. The spiral flow guide groove 11 on the outer wall of the brake piston body 1 can guide the brake oil to form a spiral flow path around the piston. This flow pattern is more dynamic than ordinary straight-line flow, which can make the brake oil more evenly distributed around the brake piston body 1.

[0038] In addition, the spiral flow guide groove 11 increases the surface area of the brake piston body 1, which is helpful for heat dissipation of the brake piston body 1.

[0039] During braking, the pressure change of brake oil may cause the occurrence of cavitation, which refers to the formation of local vacuum areas in the liquid, and these areas will produce air bubbles. When the air bubbles burst, it will impact the braking system, affecting the stability and efficiency of braking. The spiral flow groove 11 can help the brake oil better expel air during flow, thereby reducing the probability of cavitation.

[0040] Preferably, as shown in Figure 1 , Figure 2 and , in this embodiment, a flow guide slope 13 is machined at the tail end of the brake piston body 1. After using the above scheme, the flow guide slope 13 can guide the brake oil, which can improve the stress distribution of the brake piston body 1 during braking, reduce the phenomenon of local pressure concentration, and more evenly transmit the force to the brake pad, thereby improving the stability and efficiency of braking.

[0041] Figure 1 Preferably, as shown in Figure 2 , Figure 5 and , in this embodiment, it also includes a rubber sealing ring 2, and an annular clamping groove 16 is machined on the outer wall of the brake piston body 1. The rubber sealing ring 2 is sleeved in the annular clamping groove 16. After using the above scheme, in use, the rubber sealing ring 2 plays a crucial sealing role. When the braking system is working, high-pressure brake oil will flow into the gap between the brake piston body 1 and the inner wall of the brake master cylinder. At this time, the rubber sealing ring 2 tightly adheres to the inner wall of the annular clamping groove 16 and the inner wall of the brake master cylinder due to its good elasticity and sealing property, effectively preventing brake oil leakage. This not only ensures the stable transmission of brake oil pressure, so that the brake piston body 1 can smoothly and powerfully push the brake pad under hydraulic pressure to achieve efficient braking, but also prevents brake oil leakage from corroding surrounding parts, prolonging the service life of the overall braking system.

[0042] Figure 1 Preferably, as shown in Figure 2 , Figure 5 and , in this embodiment, the outer wall of the rubber sealing ring 2 tightly abuts the inner wall of the annular clamping groove 16. After using the above scheme, in use, this tight fit is the key to realizing reliable sealing of the braking system. When the brake pedal is depressed, the high pressure generated by the brake fluid will be quickly transmitted to the brake piston body 1. At this time, the rubber sealing ring 2 is in a very critical pressure-bearing position. It further extrudes the inner wall of the annular clamping groove 16 under the action of external force due to its good elasticity and toughness, thereby forming an invincible sealing barrier to effectively prevent brake fluid from leaking from the gap between the piston and the brake master cylinder.

[0043] Components not described in detail herein are prior art.

[0044] The utility model discloses a brake piston main body 1, in using, through the force plate 15 and the dismounting hole 151 of setting, make the inner chamber 12 and dismounting hole 151 form " T " shape structure, can very conveniently draw out brake piston main body 1 with the aid of tool, and dismount more convenient, safe, easy to brake piston main body 1 dismounting overhaul or replacement to can guarantee brake piston main body 1 structure's integrity, avoid unnecessary injury problem appears.

[0045] In another aspect of the utility model, the spiral flow guide groove 11 can guide the brake oil to form a spiral flow path around the piston. This flow pattern is more dynamic than ordinary linear flow, which can make the brake oil more evenly distributed around the brake piston main body 1, and help the brake piston main body 1 dissipate heat. The brake oil can reliably carry away the heat generated by the brake piston main body 1.

[0046] In addition, the setting and distribution of the wear-resistant ring 152 make the smaller diameter wear-resistant ring 152 first contact the brake pad during the initial braking, generating a larger unit area pressure, which can quickly make the brake pad adhere to the brake disc, shorten the braking response time, and gradually increase the braking force as the braking process progresses, achieving linear growth of the braking force and avoiding the sudden feeling during braking, making the braking process more stable.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and does not limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. Any modification, equivalent substitution, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A detachable automobile brake piston, comprising a brake piston body (1) with an inner cavity (12) in the brake piston body (1), characterized in that, Further comprising: a plurality of reinforcing rods (14) fixed to the inner wall of the inner cavity (12) at equal intervals in the circumferential direction; a force applying plate (15) fixed to the leading end of the brake piston body (1), and having a dismounting hole (151) at the center position of the force applying plate (15).

2. The easily removable brake piston of claim 1, wherein: Further comprising: a plurality of wear-resistant rings (152) distributed in a layer-by-layer nested manner and fixed to the end face of the force applying plate (15), and coaxial.

3. The easy-to-mount-and-disassemble automotive brake piston according to claim 2, characterized in that: The axial length of the wear-resistant ring (152) gradually increases from the outside to the inside.

4. The easy-to-mount-and-disassemble automotive brake piston according to claim 2, characterized in that: The reinforcing rod (14), the force applying plate (15), and the wear-resistant ring (152) are integrally formed by mold pressing.

5. The easy-to-assemble-and-disassemble automotive brake piston according to claim 1, characterized in that: A spiral flow guide groove (11) is processed on the outer wall of the brake piston body (1).

6. The easy-to-assemble-and-disassemble automotive brake piston according to claim 1, characterized in that: A flow guide inclined surface (13) is processed at the trailing end of the brake piston body (1).

7. The easy-to-mount-and-disassemble automotive brake piston according to claim 1, characterized in that: Further comprising: a rubber sealing ring (2), and an annular clamping groove (16) is processed on the outer wall of the brake piston body (1), and the rubber sealing ring (2) is sleeved in the annular clamping groove (16).

8. The easy-to-mount-and-disassemble automotive brake piston according to claim 7, characterized in that: The outer wall of the rubber sealing ring (2) tightly abuts against the inner wall of the annular clamping groove (16).

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