Shaft sleeve structure for increasing lateral rigidity of brake pedal

Abstract

The utility model relates to the technical field of brake pedals, and discloses a shaft sleeve structure for increasing the lateral rigidity of a brake pedal, which comprises a pedal arm and a bracket for mounting the pedal arm, and further comprises a main shaft body for connecting the pedal arm and the bracket, and two shaft sleeves sleeved on the side surfaces of the main shaft body, the shaft sleeve comprises main shaft sleeves arranged on the side faces of the main shaft body in a sleeving mode and an extrusion ring located between the pedal arm and the support, first assembly grooves matched with the two main shaft sleeves are formed in the opposite side faces of one end of the pedal arm in a penetrating mode, and second assembly grooves matched with the main shaft body are formed in the opposite side faces of the support in a penetrating mode. According to the utility model, the widened and enlarged extrusion ring is arranged, and the extrusion ring is trumpet-shaped, so that interference fit assembly is realized for the distance between the bracket and the pedal arm during assembly, the requirement on a required size chain is reduced, a certain force lag is provided, the rigidity of the two sides of the pedal arm is improved, and the driving comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of brake pedal technology, specifically to a bushing structure that increases the lateral stiffness of the brake pedal. Background Technology

[0002] In a car's braking system, the brake pedal is a key component for the driver to control the vehicle's braking. The brake pedal, through a series of mechanical structures, transmits the driver's pressure to the braking device, thereby slowing down or stopping the vehicle.

[0003] In the existing system, the pedal arm and the bracket are connected by a main shaft, with a bushing fitted on the side of the main shaft. As an important component of the brake pedal structure, the bushing provides support and reduces friction. In the existing technology, the main force of the bushing is between the side of the main shaft and the pedal arm. When the bushing wears, the pedal arm will wobble from side to side, resulting in insufficient rigidity when the pedal arm is subjected to left and right forces. Therefore, there is an urgent need in the field to improve the brake pedal bushing structure to solve the defects of the existing technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a bushing structure that increases the lateral stiffness of the brake pedal. By providing a certain force lag through the compression ring, the stiffness of both sides of the pedal arm is improved, thereby enhancing driving comfort.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bushing structure for increasing the lateral stiffness of a brake pedal, comprising a pedal arm and a bracket for mounting the pedal arm, a main shaft for connecting the pedal arm and the bracket, and two bushings sleeved on the side of the main shaft. The bushings include a main bushing sleeve sleeved on the side of the main shaft and a compression ring located between the pedal arm and the bracket. A first mounting groove adapted to the two main bushings is opened through the opposite side of one end of the pedal arm, and a second mounting groove adapted to the main shaft is opened through the opposite side of the bracket.

[0006] Preferably, the main bushing and the extrusion ring are integrally formed.

[0007] Preferably, both the main bushing and the extrusion ring have through-holes on their sides, and the main bushing and the extrusion ring are elastic.

[0008] Preferably, the extrusion ring is trumpet-shaped and the outer circumferential side of the extrusion ring abuts against the inner sidewall of the support.

[0009] Preferably, the main sleeve has a through-hole on its side, and an elastic boss is provided inside the through-hole, with the side of the elastic boss extending beyond the inner wall of the main sleeve.

[0010] Preferably, one end of the main shaft is fixedly connected to a shaft head of an irregular shape, and a limiting groove adapted to the shaft head is provided on one side of the bracket.

[0011] Preferably, a retaining ring is snapped into one side of the spindle body, and a retaining groove adapted to the retaining ring is opened on the side of the spindle body.

[0012] To address the shortcomings of existing technologies, this utility model provides a bushing structure that increases the lateral stiffness of the brake pedal, overcoming the deficiencies of the prior art. The beneficial effects of this utility model are as follows:

[0013] In this invention, by setting a widened and enlarged extrusion ring, which is trumpet-shaped, an interference fit is achieved between the bracket and the pedal arm during assembly, reducing the required dimensional chain requirements and providing a certain amount of force resistance, thereby increasing the rigidity of both sides of the pedal arm and improving driving comfort. The main bushing has several elastic bosses, whose elastic structural characteristics, when assembled with the main shaft, further reduce the dimensional chain requirements and lower the overall bushing production cost. The bushing has a clearance opening, which, combined with the bushing's own elasticity, facilitates overall assembly and simultaneously reduces the dimensional requirements in the diameter direction, further reducing the manufacturing cost of the bushing.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model after installation;

[0017] Figure 2 This is a schematic diagram of the structure of the central bushing of this utility model installed on the pedal arm;

[0018] Figure 3 This is a schematic diagram of the structure of the bushing of this utility model installed on the side of the main shaft;

[0019] Figure 4 This is a schematic diagram of the structure of the bushing of this utility model;

[0020] Figure 5 This is a schematic diagram of the extrusion ring in this utility model;

[0021] Figure 6 This is a partial cross-sectional structural diagram of the bracket and other components in this utility model;

[0022] Figure 7for Figure 6 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Pedal arm; 2. Bracket; 3. Main shaft; 4. First assembly slot; 5. Second assembly slot; 6. Main shaft sleeve; 7. Extrusion ring; 8. Relief opening; 9. Through opening; 10. Elastic boss; 11. Shaft head; 12. Limiting groove; 13. Snap ring; 14. Snap groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-7 A bushing structure for increasing the lateral stiffness of a brake pedal includes a pedal arm 1 and a bracket 2 for mounting the pedal arm 1. It also includes a main shaft 3 for connecting the pedal arm 1 and the bracket 2, and two bushings fitted onto the sides of the main shaft 3. Each bushing includes a main bushing 6 fitted onto the sides of the main shaft 3 and a compression ring 7 located between the pedal arm 1 and the bracket 2. A first mounting groove 4, adapted to the two main bushings 6, is formed through one end of the pedal arm 1 on opposite sides. A second mounting groove 5, adapted to the main shaft 3, is formed through the opposite side of the bracket 2 on opposite sides. The main bushing 6 and the compression ring 7 are integrally formed. Both the sleeve 6 and the compression ring 7 have through-holes 8. The main sleeve 6 and the compression ring 7 are elastic. The compression ring 7 is trumpet-shaped and its outer circumference abuts against the inner wall of the bracket 2. The main sleeve 6 has through-holes 9 on its side. There is an elastic boss 10 in the through-holes 9. The side of the elastic boss 10 extends beyond the inner wall of the main sleeve 6. One end of the main shaft 3 is fixedly connected to a shaft head 11 with an irregular shape. A limiting groove 12 adapted to the shaft head 11 is opened on one side of the bracket 2. A retaining spring 13 is snapped into one side of the main shaft 3. A retaining groove 14 adapted to the retaining spring 13 is opened on the side of the main shaft 3.

[0026] In this specific embodiment, when assembling the pedal arm 1 and the bracket 2, the main bushings 6 on the two bushings are engaged in the first assembly groove 4 on the opposite side of the pedal arm 1. The elastic compression ring 7 is then compressed, engaging the two main bushings 6 and the pedal arm 1 between the two mounting ears on the bracket 2. The first assembly groove 4 and the second assembly groove 5 are aligned. One end of the main shaft 3 passes through the first assembly groove 4 and the second assembly groove 5, with the shaft head 11 positioned in the limiting groove 12 to limit the main shaft 3. The retaining spring 13 is engaged in the retaining groove 14 on the side of the main shaft 3 to limit its position, thus completing the assembly of the pedal arm 1 and the bracket 2. Due to the widened and enlarged compression ring 7, which is trumpet-shaped, the assembly... The spacing between the bracket 2 and the pedal arm 1 is achieved through an interference fit, reducing the required dimensional chain and providing a certain amount of force resistance, thereby increasing the rigidity of both sides of the pedal arm 1 and improving driving comfort. The main bushing 6 has several elastic bosses 10, whose elastic structural characteristics are matched with the main shaft body 3, further reducing the dimensional chain requirements and lowering the overall bushing production cost. The bushing has a clearance opening 8, which, combined with the bushing's own elasticity, facilitates overall assembly and simultaneously reduces the dimensional requirements in the diameter direction, further reducing the manufacturing cost of the bushing. The bushing is integrally molded using POM material with added PTFE material, which provides a self-lubricating effect while improving wear resistance and enhancing driving comfort.

[0027] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bushing structure for increasing the lateral stiffness of a brake pedal, comprising a pedal arm (1) and a bracket (2) for mounting the pedal arm (1), characterized in that, It also includes a main shaft (3) for connecting the pedal arm (1) and the bracket (2) and two bushings sleeved on the side of the main shaft (3). The bushings include a main bushing (6) sleeved on the side of the main shaft (3) and a compression ring (7) located between the pedal arm (1) and the bracket (2). A first mounting groove (4) adapted to the two main bushings (6) is opened through the opposite side of one end of the pedal arm (1), and a second mounting groove (5) adapted to the main shaft (3) is opened through the opposite side of the bracket (2).

2. The bushing structure for increasing the lateral stiffness of the brake pedal according to claim 1, characterized in that, The main shaft sleeve (6) and the extrusion ring (7) are integrally formed.

3. The bushing structure for increasing the lateral stiffness of the brake pedal according to claim 1, characterized in that, Both the main shaft sleeve (6) and the extrusion ring (7) have through-holes (8) on their sides, and the main shaft sleeve (6) and the extrusion ring (7) are elastic.

4. A bushing structure for increasing the lateral stiffness of the brake pedal according to claim 1, characterized in that, The extrusion ring (7) is trumpet-shaped and the outer side of the extrusion ring (7) abuts against the inner side wall of the support (2).

5. A bushing structure for increasing the lateral stiffness of the brake pedal according to claim 1, characterized in that, The main sleeve (6) has a through-hole (9) on its side, and an elastic boss (10) is provided inside the through-hole (9). The side of the elastic boss (10) extends beyond the inner wall of the main sleeve (6).

6. A bushing structure for increasing the lateral stiffness of a brake pedal according to claim 1, characterized in that, One end of the main shaft (3) is fixedly connected to a shaft head (11) of an irregular shape, and a limiting groove (12) adapted to the shaft head (11) is provided on one side of the bracket (2).

7. A bushing structure for increasing the lateral stiffness of a brake pedal according to claim 1, characterized in that, A retaining ring (13) is attached to one side of the spindle body (3), and a retaining groove (14) adapted to the retaining ring (13) is provided on the side of the spindle body (3).

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