Brake caliper body sealing structure

Abstract

The utility model provides a sealing structure of a brake caliper body. The sealing structure comprises the brake caliper body, a piston body, a sealing dust cover and a pressure spring, a sealing groove is formed in the brake caliper body, and a limiting groove is formed in the bottom face of the sealing groove. A cylinder hole is formed in the piston body; the outer periphery of the sealing dust cover is arranged in the sealing groove, and the inner periphery of the sealing dust cover is arranged in the cylinder hole. The pressure spring is arranged in the mounting groove; thus, the pressure spring can apply pressure towards the limiting groove in the bottom face of the sealing groove to the peripheral portion of the sealing dust cover, the peripheral portion of the sealing dust cover is pressed into the limiting groove, the peripheral portion of the sealing dust cover is tightly attached to the interior of the limiting groove, dust and moisture can be effectively prevented from invading, and the dustproof performance and the waterproof performance are remarkably improved; and meanwhile, the sealing dust cover is always in a pressed state under the action of the pressure spring, so that the risk of sealing failure caused by vibration or temperature change is reduced, and the service life of the sealing structure is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of automobile brakes, and in particular to a brake caliper body sealing structure. Background Art

[0002] In existing brake caliper designs, a dust cover is typically installed within a sealing groove in the caliper body to prevent external impurities such as dust and moisture from entering the gap between the piston and the caliper body, thereby preventing rust and other problems that could affect braking performance. However, the traditional sealing method between the dust cover and the sealing groove has the following problems: insufficient sealing performance. The contact surface between the dust cover and the sealing groove is a smooth circumferential surface, which is easily damaged by vibration or temperature fluctuations, especially in harsh operating environments, where moisture and dust can easily penetrate. It also has a short service life. Due to poor sealing performance, the dust cover is prone to aging or deformation after long-term use, leading to seal failure and thus affecting the performance of the brake system. Therefore, regular inspection and maintenance are required. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a brake caliper body sealing structure, including a brake caliper body, a piston body, a sealing dust cover and a compression spring; a sealing groove is provided on the brake caliper body, and a limiting groove is formed on the bottom surface of the sealing groove; a cylinder hole is provided on the piston body; the sealing dust cover includes an outer peripheral portion, a connecting portion and an inner peripheral portion connected in sequence, and an installation groove is formed on the outer peripheral portion; the outer peripheral portion of the sealing dust cover is arranged in the sealing groove, and the inner peripheral portion is arranged in the cylinder hole; the compression spring is arranged in the installation groove.

[0004] In some embodiments of the present application, the cross-sectional shape of the limiting groove is sawtooth-shaped.

[0005] In some embodiments of the present application, the cross-sectional shape of the limiting groove is trapezoidal.

[0006] In some embodiments of the present application, the cross-sectional shape of the limiting groove is an arc shape.

[0007] In some embodiments of the present application, a limiting protrusion adapted to the limiting groove is provided on the outer periphery of the sealing dust cover, and the limiting protrusion is clamped in the limiting groove.

[0008] In some embodiments of the present application, the sealing dust cover is made of EPDM rubber.

[0009] Compared with the prior art, the present invention has the following advantages and beneficial effects: the brake caliper body sealing structure of the present application includes a brake caliper body, a piston body, a sealing dust cover and a compression spring; a sealing groove is provided on the brake caliper body, and a limiting groove is formed on the bottom surface of the sealing groove; a cylinder hole is provided on the piston body; the sealing dust cover includes an outer peripheral portion, a connecting portion and an inner peripheral portion connected in sequence, and a mounting groove is formed on the outer peripheral portion; the outer peripheral portion of the sealing dust cover is arranged in the sealing groove, and the inner peripheral portion is arranged in the cylinder hole; the compression spring is arranged in the mounting groove; in this way, the compression spring can apply pressure to the outer peripheral portion of the sealing dust cover toward the limiting groove on the bottom surface of the sealing groove, pressing the outer peripheral portion of the sealing dust cover into the limiting groove, so that the outer peripheral portion of the sealing dust cover fits tightly in the limiting groove, which can effectively prevent the intrusion of dust and moisture, and the dustproof and waterproof performance are significantly improved; at the same time, the sealing dust cover is always in a pressurized state under the action of the compression spring, reducing the risk of sealing failure caused by vibration or temperature change, and extending the service life of the sealing structure.

[0010] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which constitute part of this document, are intended to provide a further understanding of this document. The exemplary embodiments and descriptions herein are intended to explain this document and do not constitute an improper limitation on this document. In the accompanying drawings:

[0012] Figure 1 is a structural schematic diagram of a brake caliper body sealing structure provided by an exemplary embodiment of the present application;

[0013] Figure 2 The first exemplary embodiment of the present application provides Figure 1 Enlarged view in the middle circle;

[0014] Figure 3 The second exemplary embodiment of the present application provides Figure 1 Enlarged view in the middle circle;

[0015] Figure 4 The third exemplary embodiment of the present application provides Figure 1 Enlarged view in the middle circle;

[0016] Figure 5 The fourth exemplary embodiment of the present application provides Figure 1 Enlarged view within the middle circle.

[0017] In the picture:

[0018] 10. Brake caliper body; 20. Piston body; 30. Sealing dust cover; 40. Compression spring;

[0019] 101. Sealing groove; 102. Limiting groove; 201. Cylinder hole; 301. Outer periphery; 302. Connecting part; 303. Inner periphery; 304. Mounting groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other in any way.

[0021] In existing brake caliper designs, a dust cover is typically installed within a sealing groove in the caliper body to prevent external impurities such as dust and moisture from entering the gap between the piston and the caliper body, thereby preventing rust and other problems that could affect braking performance. However, the traditional sealing method between the dust cover and the sealing groove has the following problems: insufficient sealing performance. The contact surface between the dust cover and the sealing groove is a smooth circumferential surface, which is easily damaged by vibration or temperature fluctuations, especially in harsh operating environments, where moisture and dust can easily penetrate. It also has a short service life. Due to poor sealing performance, the dust cover is prone to aging or deformation after long-term use, leading to seal failure and thus affecting the performance of the brake system. Therefore, regular inspection and maintenance are required.

[0022] Based on this, an exemplary embodiment of the present application provides a brake caliper body sealing structure, which includes a brake caliper body, a piston body, a sealing dust cover and a compression spring; a sealing groove is provided on the brake caliper body, and a limiting groove is formed on the bottom surface of the sealing groove; a cylinder hole is provided on the piston body; the sealing dust cover includes an outer peripheral portion, a connecting portion and an inner peripheral portion connected in sequence, and a mounting groove is formed on the outer peripheral portion; the outer peripheral portion of the sealing dust cover is arranged in the sealing groove, and the inner peripheral portion is arranged in the cylinder hole; the compression spring is arranged in the mounting groove; in this way, the compression spring can apply pressure to the outer peripheral portion of the sealing dust cover toward the limiting groove on the bottom surface of the sealing groove, pressing the outer peripheral portion of the sealing dust cover into the limiting groove, so that the outer peripheral portion of the sealing dust cover fits tightly in the limiting groove, which can effectively prevent the intrusion of dust and moisture, and the dustproof and waterproof performance are significantly improved; at the same time, the sealing dust cover is always in a pressurized state under the action of the compression spring, reducing the risk of sealing failure caused by vibration or temperature changes, and extending the service life of the sealing structure.

[0023] An exemplary embodiment of the present application provides a brake caliper body sealing structure, such as Figure 1 and 2As shown, the sealing structure includes a brake caliper body 10, a piston body 20, a sealing dust cover 30, and a compression spring 40. The brake caliper body 10 is provided with a sealing groove 101, and the bottom surface of the sealing groove 101 forms a limiting groove 102. For example, the surface opposite to the opening direction of the sealing groove 101 is the bottom surface of the sealing groove 101, and the opening direction of the limiting groove 102 is the same as the opening direction of the sealing groove 101. The piston body 20 is provided with a cylinder hole 201, which is arranged around the outer circumference of the piston body 20 for mounting the sealing dust cover 30. The sealing dust cover 30 includes an outer circumference 301, a connecting portion 302, and an inner circumference 303 connected in sequence. The outer circumference 301 is formed with a mounting groove 304. The sealing dust cover 30 is preferably made of EPDM rubber, which makes the sealing dust cover 30 have good elasticity and weather resistance. When sealing the brake caliper body 10 and the piston body 20, the outer peripheral portion 301 of the sealing dust cover 30 is arranged in the sealing groove 101, and the inner peripheral portion 303 is arranged in the cylinder hole 201; the compression spring 40 is arranged in the mounting groove 304; the compression spring 40 can apply pressure to the outer peripheral portion 301 of the sealing dust cover 30 toward the limiting groove 102 on the bottom surface of the sealing groove 101, pressing the outer peripheral portion 301 of the sealing dust cover 30 into the limiting groove 102, so that the outer peripheral portion 301 of the sealing dust cover 30 fits tightly in the limiting groove 102, which can effectively prevent the intrusion of dust and moisture, and the dustproof and waterproof performance are significantly improved; at the same time, the sealing dust cover 30 is always in a pressurized state under the action of the compression spring 40, reducing the risk of sealing failure caused by vibration or temperature changes, and extending the service life of the sealing structure. At the same time, during the installation of the sealing structure, the limit groove 102 has a guiding function, which can automatically align the sealing dust cover 30, reducing the alignment error during the assembly process and improving the assembly efficiency; the sealing structure is suitable for various types of brake caliper bodies 10, especially for brake systems that need to work under complex working conditions.

[0024] The cross-sectional shape of the limiting groove 102 is various. In one embodiment, Figure 2 As shown, the cross-sectional shape of the retaining groove 102 is sawtooth-shaped. Preferably, the height of the sawtooth is 0.5 mm, and the spacing between the sawtooth teeth is 2 mm. Under the action of the compression spring 40, the outer peripheral surface of the sealing dust cover 30 can be pressed into the sawtooth-shaped retaining groove 102, causing the sealing dust cover 30 to elastically deform, tightly fitting the retaining groove 102, and enhancing the sealing effect.

[0025] In one embodiment, Figure 3As shown, in order to improve the sealing performance and effect and facilitate the assembly of the sealing dust cover 30, a limiting protrusion that matches the limiting groove 102 is provided on the outer periphery 301 of the sealing dust cover 30, and the limiting protrusion is clamped in the limiting groove 102. In this way, the limiting protrusion and the limiting groove can fit tightly together, improving the sealing effect. At the same time, during the installation process, the limiting protrusion and the limiting groove can be automatically aligned, improving the convenience and efficiency of installation.

[0026] In one embodiment, Figure 4 As shown, the cross-sectional shape of the limiting groove 102 is a trapezoid. In this case, the outer circumference of the sealing dust cover 30 can be provided with a limiting protrusion with a trapezoidal cross-section to adapt to the limiting groove 102. Alternatively, the limiting protrusion may not be provided, and the outer circumference of the sealing dust cover 30 can be pressed into the limiting groove 102 with a trapezoidal cross-sectional shape only by a retaining spring.

[0027] In one embodiment, Figure 5 As shown, the cross-section of the limiting groove 102 is an arc. In this case, the outer circumference of the sealing dust cover 30 can be provided with a limiting protrusion with an arc cross-section to adapt to the limiting groove 102. Alternatively, the limiting protrusion may not be provided, and the outer circumference of the sealing dust cover 30 can be pressed into the limiting groove 102 with an arc cross-section by using a retaining spring.

[0028] In this application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that an article or device comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the article or device comprising the element.

[0029] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0030] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if such changes and modifications of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such changes and modifications.

Claims

1. A brake caliper body sealing structure, characterized in that: It includes a brake caliper body, a piston body, a sealing dust cover and a compression spring; the brake caliper body is provided with a sealing groove, and the bottom surface of the sealing groove forms a limiting groove; the piston body is provided with a cylinder hole; the sealing dust cover includes an outer peripheral part, a connecting part and an inner peripheral part connected in sequence, and a mounting groove is formed on the outer peripheral part; the outer peripheral part of the sealing dust cover is arranged in the sealing groove, and the inner peripheral part is arranged in the cylinder hole; the compression spring is arranged in the mounting groove.

2. The brake caliper body sealing structure according to claim 1, characterized in that: The cross-section of the limiting groove is sawtooth-shaped.

3. The brake caliper body sealing structure according to claim 1, characterized in that: The cross-sectional shape of the limiting groove is trapezoidal.

4. The brake caliper body sealing structure according to claim 1, characterized in that: The cross-section of the limiting groove is an arc shape.

5. The brake caliper body sealing structure according to claim 1, characterized in that: A limiting protrusion adapted to the limiting groove is provided on the outer periphery of the sealing dust cover, and the limiting protrusion is clamped in the limiting groove.

6. The brake caliper body sealing structure according to claim 1, characterized in that: The sealing dust cover is made of EPDM rubber.

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