Brake clamp lever structure

Abstract

The utility model discloses a brake clamp lever structure which aims to overcome the defects that an ejector block with a semicircular cross section is in contact with a brake pad in an existing brake clamp lever structure, the contact area is small, the pressure is large, and the brake pad is prone to being damaged. The device comprises a lever body, a lever shaft, a top block, a pivoting shaft and a brake pad support, the lever shaft is rotationally connected to the middle of the lever body, the top block is arranged at one end of the lever body, the pivoting shaft is inserted in the position, away from the top block and close to the other end, of the lever body, the brake pad support is connected to the pivoting shaft, and the brake pad support and the lever shaft are rotationally arranged relatively. And the free end contact surface of the brake pad support is parallel to the top surface of the brake pad during fitting. The brake pad support is arranged to be rotationally connected with the lever body, and the bottom surface of the brake pad support is kept horizontal through gravity, so that the brake pad support and the brake pad are reliably connected in the contact-pressing process, and component force is reduced.

Description

Technical Field

[0001] The utility model relates to the field of brake parts, and more specifically, to a brake clamp lever structure. Background Art

[0002] The brake caliper is an essential brake actuator in the friction brake system, and the lever is an important part of the brake caliper. The existing brake caliper lever structure has a semicircular cross-section top block in contact with the brake pad, which is a line-surface contact with a small contact area and a huge pressure, which can easily lead to damage to the brake pad and cause brake failure.

[0003] The present application aims to provide a brake caliper lever structure to solve the above-mentioned problem. Summary of the invention

[0004] The utility model overcomes the disadvantage that the existing brake clamp lever structure adopts a top block with a semicircular cross section to ensure sufficient contact with the brake pad during the rotation process of the lever, but this leads to the disadvantage that the contact area is too small and the brake pad is easily crushed. A brake clamp lever structure is provided, which can increase the contact area between the brake pad and the top block, reduce the pressure, and thus extend the service life of the brake pad.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A brake caliper lever structure comprises a lever body, a lever shaft, a top block, a pivot shaft and a brake pad support, wherein the lever shaft is rotatably connected to the middle part of the lever body, the top block is arranged at one end of the lever body, the pivot shaft is inserted at a position of the lever body away from the top block and close to the other end, the pivot shaft is connected to the brake pad support, the brake pad support and the lever shaft are rotatably arranged relative to each other, and the free end contact surface of the brake pad support is parallel to the top surface of the brake pad when in contact.

[0007] The present application transmits the braking force through the lever body, thereby spatially separating the brake pad and the oil cylinder providing the braking force. The telescopic end of the oil cylinder pushes the top block to drive the lever body to rotate around the lever axis, and transmits the force to the brake pad support through the pivot axis. The brake pad support presses the brake pad, and the brake pad presses the brake disc under the action of the force. The brake pad support in the present application is connected to the lever axis by rotation. The angle of the contact surface of the free end of the brake pad support is not affected by the rotation angle of the lever axis, and can achieve surface-to-surface contact with the brake pad when it is in contact, thereby increasing the contact area, reducing the pressure, protecting the brake pad, and extending the life of the device.

[0008] Preferably, the brake pad holder maintains the level of the free end contact surface by gravity. The brake pad holder is affected by gravity to maintain the level of the free end contact surface.

[0009] Preferably, the top block is arranged on the bottom surface of the lever body. The structure is suitable for the installation structure in which the oil cylinder is located at the bottom of the top block.

[0010] Preferably, the brake pad holder includes a first hanging ear and a second hanging ear, both ends of the pivot shaft extend out of the lever body, and the first hanging ear and the second hanging ear are respectively connected to both ends of the pivot shaft. The embodiment improves the stability of the brake pad holder, and as an intermediate force transmission structure that bears the torque of the lever body, the first hanging ear and the second hanging ear limit the degree of freedom, thereby ensuring the horizontality of the free end of the brake pad holder.

[0011] Preferably, the pivot shaft is fixedly connected to the first hanging ear or the second hanging ear via a retaining ring. The structure is used to prevent the brake pad support from moving along the axial direction on the pivot shaft.

[0012] Preferably, the lever body is thick in the middle and thin at both ends. The structure reduces the moment of inertia, making the lever body have smaller inertia and more sensitive when rotating and stopping.

[0013] Preferably, the cross section of the top block is semicircular. The structure enables the top block to maintain reliable contact with the oil cylinder during the rotation of the lever body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of the utility model;

[0016] In the figure:

[0017] The lever body 1 , the lever shaft 2 , the top block 3 , the pivot shaft 4 , the brake pad support 5 , the brake pad 6 , the first hanging ear 7 , the second hanging ear 8 , the retaining ring 9 , the oil cylinder 10 , and the brake disc 11 . DETAILED DESCRIPTION

[0018] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0019] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] In the present disclosure, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and they cannot be understood as limitations on the present disclosure.

[0022] Example:

[0023] A brake caliper lever structure, reference Figure 1 , 2 As shown, it includes a lever body 1, a lever shaft 2, a top block 3, a pivot shaft 4 and a brake pad support 5.

[0024] The lever body 1 is thick in the middle and thin at both ends. The structure reduces the moment of inertia, making the lever body 1 smaller in inertia and more sensitive when rotating and stopping. The lever shaft 2 is rotatably connected to the middle of the lever body 1, the top block 3 is set at one end of the lever body 1, and the pivot shaft 4 is inserted at a position of the lever body 1 away from the top block 3 and close to the other end.

[0025] A brake pad holder 5 is connected to the pivot shaft 4. The brake pad holder 5 is arranged to rotate relative to the lever shaft 2. The free end contact surface of the brake pad holder 5 is parallel to the top surface of the brake pad 6 when in contact. Specifically, the brake pad holder 5 maintains the level of the free end contact surface by gravity. The brake pad holder 5 is affected by gravity to maintain the level of its free end contact surface. Among them, the brake pad holder 5 includes a first hanging ear 7 and a second hanging ear 8. The two ends of the pivot shaft 4 extend out of the lever body 1. The first hanging ear 7 and the second hanging ear 8 are respectively connected to the two ends of the pivot shaft 4. The embodiment improves the stability of the brake pad holder 5. As an intermediate force transmission structure that bears the torque of the lever body 1, the degree of freedom is limited by the first hanging ear 7 and the second hanging ear 8 to ensure the horizontality of the free end of the brake pad holder 5. The pivot shaft 4 is fixedly connected to the first hanging ear 7 or the second hanging ear 8 by a retaining ring 9. The structure is used to prevent the brake pad holder 5 from moving in the axial direction on the pivot shaft 4.

[0026] In some embodiments, the top block 3 is arranged on the bottom surface of the lever body 1. The structure is suitable for the installation structure in which the oil cylinder 10 is located at the bottom of the top block 3. The cross section of the top block 3 is semicircular. The structure enables the top block 3 to maintain reliable contact with the oil cylinder 10 during the rotation of the lever body 1.

[0027] The present application transmits the braking force through the lever body 1, thereby spatially separating the brake pad 6 and the oil cylinder 10 providing the braking force. The telescopic end of the oil cylinder 10 pushes the top block 3 to drive the lever body 1 to rotate around the lever shaft 2, and transmits the force to the brake pad support 5 through the pivot shaft 4. The brake pad support 5 presses the brake pad 6, and the brake pad 6 presses the brake disc 11 under the action of the force. The brake pad support 5 in the present application is connected to the lever shaft 2 by rotation. The angle of the contact surface of the free end of the brake pad support 5 is not affected by the rotation angle of the lever shaft 2, and can achieve surface-to-surface contact with the brake pad 6 when it is in contact, thereby increasing the contact area, reducing the pressure, protecting the brake pad 6, and extending the life of the device.

[0028] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A brake caliper lever structure, characterized in that: It includes a lever body, a lever shaft, a top block, a pivot shaft and a brake pad support. The lever shaft is rotatably connected to the middle part of the lever body, the top block is arranged at one end of the lever body, the pivot shaft is inserted at a position of the lever body close to the other end away from the top block, and the brake pad support is connected to the pivot shaft. The brake pad support and the lever shaft are rotatably arranged relative to each other, and the free end contact surface of the brake pad support is parallel to the top surface of the brake pad when they are in contact.

2. A brake caliper lever structure according to claim 1, characterized in that: The brake pad support maintains the level of the free end contact surface through gravity.

3. A brake caliper lever structure according to claim 1, characterized in that: The top block is arranged on the bottom surface of the lever body.

4. A brake caliper lever structure according to claim 2, characterized in that: The brake shoe support comprises a first hanging ear and a second hanging ear, two ends of the pivot shaft extend out of the lever body, and the first hanging ear and the second hanging ear are respectively connected to the two ends of the pivot shaft.

5. A brake caliper lever structure according to claim 4, characterized in that: The pivot shaft is fixedly connected to the first hanging ear or the second hanging ear via a retaining ring.

6. A brake caliper lever structure according to claim 1, characterized in that: The lever body is thick in the middle and thin at both ends.

7. A brake caliper lever structure according to claim 3, characterized in that: The cross section of the top block is semicircular.

Images