Waterproof structure of brake caliper piston

Abstract

The brake caliper piston waterproof structure comprises a brake caliper body, a piston cavity is formed in the brake caliper body, a piston body is slidably connected to the interior of the piston cavity, a steel back plate is fixedly installed on the surface of one side of the piston body, and a brake plate is fixedly installed on the surface of the other side of the steel back plate; a waterproof mechanism is arranged on the outer surface of the piston body, and a dustproof mechanism is arranged in the piston cavity. Through the use of the waterproof mechanism, the mechanism is composed of two sealing grooves, and a waterproof sealing ring is clamped in each sealing groove; the waterproof sealing rings are made of nitrile rubber materials, have good elasticity and water resistance and can effectively prevent external water from entering a piston cavity. In addition, a first cavity is further formed in the waterproof sealing ring, a groove is formed in the outer surface of the waterproof sealing ring, protrusions formed on the two sides of the groove can be tightly attached to the inner wall of the piston cavity, and the waterproof effect and durability of the sealing ring are further enhanced.

Description

Technical Field

[0001] The utility model relates to the relevant field of brake calipers, and in particular to a brake caliper piston waterproof structure. Background Art

[0002] The brake caliper is a crucial component in a car's braking system, converting brake fluid pressure into mechanical force to clamp the brake disc, slowing or stopping the vehicle. Typically constructed from high-strength alloys to ensure adequate strength and durability even under extreme conditions, the caliper incorporates pistons and seals. These precision components efficiently transmit hydraulic pressure, allowing the brake pads to adhere tightly to the disc surface, generating the necessary friction to slow the wheel's rotation.

[0003] The existing brake caliper piston still has some disadvantages when in use:

[0004] (1) The brake caliper piston in the prior art has a significant defect when encountering water or humid environments, namely, it is easy for water to penetrate. This water penetration not only causes the brake fluid to be contaminated, thereby affecting its normal pressure transmission and braking effect, but also accelerates the aging process of the sealing ring, causing it to lose its original sealing performance;

[0005] (2) During use, the brake caliper piston faces another severe challenge, that is, a large amount of dust generated by the rotation of the wheel hub can easily enter the brake system. This dust not only increases the wear between the brake components and shortens their service life, but also reduces the dustproof effect of the brake caliper piston, resulting in a gradual decline in braking performance.

[0006] Therefore, we have made improvements to this problem and proposed a brake caliper piston waterproof structure. Utility Model Content

[0007] In view of the deficiencies in the prior art, the present invention provides a brake caliper piston waterproof structure, which solves the problems mentioned in the background art.

[0008] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0009] The brake caliper piston has a waterproof structure to solve the above problems.

[0010] The specific application is as follows:

[0011] It includes a brake caliper body, a piston cavity is provided inside the brake caliper body, and a piston body is slidably connected inside the piston cavity, a steel back plate is fixedly installed on one side surface of the piston body, and a brake plate is fixedly installed on the other side surface of the steel back plate, a waterproof mechanism is provided on the outer surface of the piston body, and a dustproof mechanism is provided inside the piston cavity.

[0012] As a preferred technical solution of the present application, the waterproof mechanism includes a sealing groove, and there are two sealing grooves, and both sealing grooves are opened on the outer surface of the piston body, and waterproof sealing rings are engaged inside the two sealing grooves.

[0013] As a preferred technical solution of the present application, a first cavity is provided inside the waterproof sealing ring, and a groove is provided on the outer surface of the waterproof sealing ring.

[0014] As a preferred technical solution of the present application, the waterproof sealing ring is made of nitrile rubber material.

[0015] As a preferred technical solution of the present application, the dustproof mechanism includes a connecting groove, and the connecting groove is opened on the inner surface of the piston cavity, and a dustproof ring is snap-connected to the interior of the piston cavity.

[0016] As a preferred technical solution of the present application, the interior of the dustproof ring is hollow, and a plurality of convex rings are integrated on the inner ring surface of the dustproof ring.

[0017] As a preferred technical solution of the present application, the dust ring is made of polyurethane material.

[0018] As a preferred technical solution of the present application, a waterproof groove is provided on the outer surface of the piston body, and the waterproof groove is provided between the two sealing grooves.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the scheme of this application:

[0021] 1. Through the use of a waterproof mechanism, which consists of two sealing grooves, each of which is engaged with a waterproof sealing ring; these waterproof sealing rings are made of nitrile rubber material, have good elasticity and water resistance, and can effectively prevent external moisture from entering the piston cavity; in addition, a first cavity is opened inside the waterproof sealing ring, and a groove is provided on the outer surface. The protrusions formed on both sides of the groove can closely fit the inner wall of the piston cavity, further enhancing the waterproof effect and durability of the sealing ring.

[0022] 2. Through the use of a dustproof mechanism, a connecting groove is provided on the inner surface of the piston cavity, and a dustproof ring is snap-connected in the connecting groove; the dustproof ring is made of polyurethane material, has excellent wear resistance and elasticity, and can effectively prevent dust from entering the piston cavity; the interior of the dustproof ring is hollow, and a number of convex rings are integrated on the surface of the inner ring, which can make the convex rings contact with the outer surface of the piston body. Multiple convex rings can form a multi-layer barrier, thereby enhancing the sealing performance of the dustproof ring and increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the brake caliper body of the utility model;

[0024] Figure 2 This is a structural diagram of the piston chamber and the piston body of the utility model;

[0025] Figure 3 This is a structural diagram of the sealing groove and waterproof groove of the utility model;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the waterproof sealing ring of the utility model;

[0027] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0028] Indicated in the figure:

[0029] 1. Brake caliper body; 2. Piston chamber; 3. Piston body; 4. Steel back plate; 5. Brake plate; 6. Waterproof mechanism; 601. Sealing groove; 602. Waterproof sealing ring; 603. First cavity; 604. Groove; 7. Dustproof mechanism; 701. Connecting groove; 702. Dustproof ring; 703. Raised strip ring; 8. Waterproof groove. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the examples described are only part of the embodiments of the present invention, not all of them.

[0031] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of this utility model, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is typically placed when in use, or the orientations or positional relationships commonly understood by those skilled in the art. Such terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] In order to solve the technical problems in the background technology, the following brake caliper piston waterproof structure is provided:

[0036] Combine Figure 1 - Figure 5 As shown, the utility model provides a brake caliper piston waterproof structure, including a brake caliper body 1, a piston cavity 2 is opened inside the brake caliper body 1, and a piston body 3 is slidably connected inside the piston cavity 2, a steel back plate 4 is fixedly installed on one side surface of the piston body 3, and a brake plate 5 is fixedly installed on the other side surface of the steel back plate 4, a waterproof mechanism 6 is opened on the outer surface of the piston body 3, and a dustproof mechanism 7 is arranged inside the piston cavity 2.

[0037] In this embodiment: a piston chamber 2 is opened inside the brake caliper body 1 for accommodating and guiding the smooth sliding of the piston body 3; a steel back plate 4 is installed on one side of the piston body 3 to further enhance the stability and durability of the structure; a brake plate 5 is fixed on the other side of the steel back plate 4 to ensure that the brake disc can be clamped quickly and effectively during the braking process; a waterproof mechanism 6 is provided on the outer surface of the piston body 3 to effectively isolate external moisture and prevent it from invading the piston chamber 2, thereby protecting the brake fluid from contamination and extending the service life of the sealing ring; at the same time, a dustproof mechanism 7 is provided inside the piston chamber 2 to effectively block dust generated by the rotation of the wheel hub, thereby ensuring the cleanliness of the internal environment of the brake caliper and further improving the overall performance and reliability of the braking system.

[0038] refer to Figure 1 - Figure 4 On the basis of the above embodiment, in order to improve the waterproof performance of the piston, this embodiment provides the following design:

[0039] As a preferred embodiment, on the basis of the above method, the waterproof mechanism 6 further includes a sealing groove 601, and there are two sealing grooves 601, and the two sealing grooves 601 are both opened on the outer surface of the piston body 3, and the inside of the two sealing grooves 601 are both engaged with waterproof sealing rings 602.

[0040] In this embodiment: by opening two sealing grooves 601 on the outer surface of the piston body 3, the positions and sizes of the two sealing grooves 601 are precisely calculated to ensure that they can effectively cooperate with the waterproof sealing ring 602, so that it is engaged inside the two sealing grooves 601, forming a solid waterproof barrier, thereby effectively preventing the intrusion of external moisture and ensuring the stability and smoothness of the piston during the sliding process.

[0041] As a preferred embodiment, on the basis of the above-mentioned manner, further, a first cavity 603 is provided inside the waterproof sealing ring 602 , and a groove 604 is provided on the outer surface of the waterproof sealing ring 602 .

[0042] In this embodiment: by providing a groove 604 on the outer surface of the waterproof sealing ring 602, the protrusions on both sides of the groove 604 can form two barriers and fit tightly with the piston cavity 2, thereby ensuring the stability of the waterproof sealing ring 602 under high pressure. The groove 604 can also accommodate and disperse moisture to a certain extent, preventing it from penetrating into the interior of the piston cavity 2, further improving the waterproof effect.

[0043] As a preferred embodiment, on the basis of the above-mentioned embodiment, the waterproof sealing ring 602 is further made of nitrile rubber material.

[0044] In this embodiment: the waterproof sealing ring 602 made of nitrile rubber can not only maintain stable sealing performance under harsh working conditions and effectively prevent the intrusion of moisture, but also maintain good elasticity and wear resistance during long-term use, thereby extending the service life of the sealing ring; in addition, the nitrile rubber material also has good adaptability and can well adapt to the tiny gap between the piston body 3 and the sealing groove 601, further improving the waterproof effect.

[0045] refer to Figure 1 - Figure 5 On the basis of the above embodiment, in order to improve the dustproof effect of the piston, this embodiment provides the following design:

[0046] As a preferred embodiment, based on the above method, the dustproof mechanism 7 further includes a connecting groove 701, and the connecting groove 701 is opened on the inner surface of the piston cavity 2, and a dustproof ring 702 is engaged and connected inside the piston cavity 2.

[0047] In this embodiment: by providing a connecting groove 701 on the inner surface of the piston chamber 2, a positioning and installation space can be provided for the dust ring 702, ensuring a tight fit between the dust ring 702 and the piston chamber 2, so that it is engaged inside the connecting groove 701, forming a solid dust barrier; thereby effectively blocking dust and impurities generated by the rotation of the wheel hub, keeping the inside of the piston chamber 2 clean, and thus extending the service life of the brake caliper piston.

[0048] As a preferred embodiment, based on the above-mentioned embodiment, further, the interior of the dust ring 702 is hollow, and a plurality of convex rings 703 are integrally provided on the inner ring surface of the dust ring 702 .

[0049] In this embodiment: the interior of the dust ring 702 is a hollow structure, which can improve its elasticity and adaptability, so that it can better fit the inner surface of the piston cavity 2 and enhance the dust-proof effect; the inner ring surface of the dust ring 702 is integrated with a number of raised rings 703, which not only increase the contact area between the dust ring 702 and the piston body 3, and improve the friction, but also can form multiple barriers, thereby improving the dust-proof effect.

[0050] As a preferred embodiment, on the basis of the above embodiment, the dust ring 702 is further made of polyurethane material.

[0051] In this embodiment: the dustproof ring 702 made of polyurethane can not only maintain stable dustproof performance under harsh working conditions and effectively block the invasion of dust and impurities, but also maintain good elasticity and wear resistance during long-term use, thereby extending the service life of the dustproof ring 702.

[0052] refer to Figure 2 and Figure 3 On the basis of the above embodiment, in order to further improve the waterproof performance of the piston, this embodiment provides the following design

[0053] As a preferred embodiment, based on the above embodiment, a waterproof groove 8 is further provided on the outer surface of the piston body 3 , and the waterproof groove 8 is provided between the two sealing grooves 601 .

[0054] In this embodiment, the waterproof groove 8 is arranged between the two sealing grooves 601 to form an additional waterproof barrier, which helps to better contain and disperse moisture, prevent it from penetrating into the piston cavity 2, and enhance the waterproof effect.

[0055] The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0056] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A brake caliper piston waterproof structure, comprising a brake caliper body (1), characterized in that: The brake caliper body (1) is provided with a piston cavity (2) inside, and the piston cavity (2) is slidably connected to a piston body (3), a steel back plate (4) is fixedly mounted on one side surface of the piston body (3), and a brake plate (5) is fixedly mounted on the other side surface of the steel back plate (4), a waterproof mechanism (6) is provided on the outer surface of the piston body (3), and a dustproof mechanism (7) is provided inside the piston cavity (2).

2. The brake caliper piston waterproof structure according to claim 1, characterized in that: The waterproof mechanism (6) includes a sealing groove (601), and two sealing grooves (601) are provided. Both sealing grooves (601) are opened on the outer surface of the piston body (3), and waterproof sealing rings (602) are clamped inside the two sealing grooves (601).

3. The brake caliper piston waterproof structure according to claim 2, characterized in that: A first cavity (603) is provided inside the waterproof sealing ring (602), and a groove (604) is provided on the outer surface of the waterproof sealing ring (602).

4. The brake caliper piston waterproof structure according to claim 2, characterized in that: The waterproof sealing ring (602) is made of nitrile rubber material.

5. The brake caliper piston waterproof structure according to claim 1, characterized in that: The dustproof mechanism (7) comprises a connecting groove (701), and the connecting groove (701) is provided on the inner surface of the piston cavity (2), and a dustproof ring (702) is engaged and connected inside the piston cavity (2).

6. The brake caliper piston waterproof structure according to claim 5, characterized in that: The interior of the dustproof ring (702) is hollow, and a plurality of convex rings (703) are integrally provided on the inner ring surface of the dustproof ring (702).

7. The brake caliper piston waterproof structure according to claim 5, characterized in that: The dustproof ring (702) is made of polyurethane material.

8. The brake caliper piston waterproof structure according to claim 2, characterized in that: A waterproof groove (8) is provided on the outer surface of the piston body (3), and the waterproof groove (8) is provided between the two sealing grooves (601).

Images