A brake pedal and master cylinder connection structure

Abstract

This utility model discloses a brake pedal and master cylinder connection structure, including a mounting bracket (1) installed on the vehicle body. The mounting bracket (1) has a pedal arm (2) on its inner side. One end of the pedal arm (2) is connected to the mounting bracket (1). The mounting bracket (1) has a push rod (3) in the middle. The push rod (3) passes through the mounting bracket (1) and is connected to the pedal arm (2). The other end of the pedal arm (2) has a pedal (4). The connection point between the pedal arm (2) and the push rod (3) is located between the two ends of the pedal arm (2). By changing the connection position and setting method of the push rod (3) and the pedal arm (2), the overall leverage ratio of the brake pedal (4) is improved, and the equipment such as the booster used for pedal assistance is removed, reducing the overall volume occupied by the equipment. This makes it easier to pedal the brake pedal (4) while also facilitating the layout of the vehicle and saving internal space.

Description

Technical Field

[0001] This utility model belongs to the field of automotive pedal technology. Specifically, this utility model relates to a connection structure between a brake pedal and a master cylinder. Background Technology

[0002] Under current economic conditions, low-speed four-wheeled electric vehicles, as an important component of vehicles, bear the upper body of the vehicle, connect various components, and transmit power. The rational design of the connection structure between the brake pedal and the brake master cylinder is of great significance to the feasibility of vehicle layout.

[0003] A patent specification with patent number 201721786276.2 and publication date of September 18, 2018, discloses a vacuum booster system for electric vehicles. A vacuum booster brake pump is installed on one side of the vacuum pack, and a brake pedal base is installed on the other side. The brake pedal is connected to the brake pedal base via a pin. A return spring is installed between the brake pedal base near the vacuum pack and the top of the brake pedal. The brake pedal rotates around the pin. The end of the booster push rod at the center of the vacuum pack is hinged to the upper end of the brake pedal. The end of a third vacuum pipe connected to the vacuum pump is connected to the inlet of an air tank. A pressure control switch is installed on the air tank. A second vacuum pipe is installed between the air tank and the vacuum pack. A wire is installed between the pressure control switch and the vacuum pump. The system improves braking performance, enhances safety, and facilitates vehicle handling. It has a simple structure, low production cost, and significant performance benefits.

[0004] While ensuring performance and quality, designing a more reasonable structural scheme can not only reduce the weight of the vehicle, but also save layout space. However, the traditional electric vehicle brake pedal is connected to the vacuum booster and brake master cylinder assembly, which can easily lead to an increase in the weight of the vehicle, which to some extent increases the difficulty of layout, driving energy consumption and unit cost of low-speed four-wheel vehicles. Utility Model Content

[0005] The present invention aims to provide a brake pedal and master cylinder connection structure that can save layout space.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a brake pedal and master cylinder connection structure, including a mounting bracket installed on the vehicle body, a pedal arm provided on the inner side of the mounting bracket, one end of the pedal arm being connected to the mounting bracket, a push rod provided in the middle of the mounting bracket, the push rod passing through the mounting bracket and being connected to the pedal arm, a pedal provided at the other end of the pedal arm, and the connection point between the pedal arm and the push rod being located between the two ends of the pedal arm.

[0007] The mounting bracket consists of a connecting flange connected to the vehicle body and a mounting plate mounted on the connecting flange. The end of the foot arm is hinged between the mounting plates on both sides.

[0008] The connecting flange is bolted with a fixing plate, the inner side of which is provided with an arc-shaped plate and a protective plate. The mounting plate is placed on the protective plate. The middle part of the fixing plate is arc-shaped and has a raised rib. The protective plate and the mounting plate are provided with reinforcing ribs.

[0009] A bolt shaft is provided between the mounting plates, passing through both sides of the mounting plates. The bolt shaft is inserted into the end of the pedal arm. A torsion spring is provided between the bolt shaft and the mounting plate. A cover plate is provided on the mounting plate.

[0010] The mounting bracket has a brake master cylinder on its side, the push rod is installed inside the brake master cylinder, and the brake master cylinder has a reservoir.

[0011] The push rod is connected to the pedal arm at one end with a connecting end, and the connecting end is provided with a locking claw. The pedal arm is provided with a buckle, and the locking claw is connected to the pedal arm through the buckle.

[0012] A reinforcing plate is provided between the mounting plates, and the end of the reinforcing plate is fixed to the vehicle body by bolts.

[0013] The reinforcing plate is stepped, and its two sides abut against the inner wall surface of the mounting plate.

[0014] The technical effect of this utility model is as follows: by changing the connection position and setting method of the push rod and the pedal arm, the overall leverage ratio of the brake pedal is improved, the booster and other devices used for pedaling assistance are eliminated, the overall volume occupied by the equipment is reduced, making it easier to pedal the brake pedal, and also facilitating the layout of the whole vehicle and saving internal space. Attached Figure Description

[0015] This manual includes the following figures, which illustrate the following:

[0016] Figure 1 This is a schematic diagram of the connection structure between the brake pedal and the master cylinder according to the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the connection end of a brake pedal and master cylinder connection structure;

[0018] Figure 3 for Figure 1 A schematic diagram of a fixing plate for a brake pedal and master cylinder connection structure.

[0019] The markings in the diagram are as follows: 1. Mounting bracket; 2. Foot arm; 3. Push rod; 4. Pedal; 5. Connecting flange; 6. Mounting plate; 7. Fixing plate; 8. Curved plate; 9. Guard plate; 10. Raised rib; 11. Reinforcing rib; 12. Bolt shaft; 13. Torsion spring; 14. Baffle plate; 15. Brake master cylinder; 16. Reservoir; 17. Connecting end; 18. Clamping claw; 19. Clip; 20. Reinforcing plate. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution, and to facilitate its implementation.

[0021] Please see Figure 1-3 A brake pedal and master cylinder connection structure. Figure 1-3 Both the pedal arm 2 and the pedal 4 have two movement states: the pedal 4 is depressed and the pedal 4 is not depressed. The system includes a mounting bracket 1 mounted on the vehicle body. The inner side of the mounting bracket 1 has a pedal arm 2. One end of the pedal arm 2 is connected to the mounting bracket 1. A push rod 3 is located in the middle of the mounting bracket 1, passing through the mounting bracket 1 and connecting to the pedal arm 2. The other end of the pedal arm 2 has a pedal 4. The connection point between the pedal arm 2 and the push rod 3 is located between the two ends of the pedal arm 2. By changing the connection position and arrangement of the push rod 3 and the pedal arm 2, the overall leverage ratio of the brake pedal 4 is increased. The need for a power booster and other devices used for pedal assistance is eliminated, reducing the overall volume occupied by the equipment. This makes it easier to depress the brake pedal 4 and also facilitates the overall vehicle layout, saving internal space. The distance between the connection point of the pedal arm 2 and the push rod 3 and the pedal 4 is greater than the distance between the connection point of the pedal arm 2 and the push rod 3 and the connection point of the pedal arm 2 and the mounting bracket 1, further increasing the leverage ratio and reducing the force required by the driver.

[0022] Mounting bracket 1 consists of a connecting flange 5 connected to the vehicle body and a mounting plate 6 set on the connecting flange 5. The end of the foot arm 2 is hinged between the mounting plates 6 on both sides. Bolts are provided at all four corners of the connecting flange 5 to improve the overall installation firmness, prevent loosening or falling off, and ensure safety during driving.

[0023] A fixing plate 7 is bolted onto the connecting flange 5. The inner side of the fixing plate 7 has an arc-shaped plate 8 and a protective plate 9. A mounting plate 6 is mounted on the protective plate 9. The middle of the fixing plate 7 is arc-shaped and has a raised rib 10. The protective plate 9 and mounting plate 6 have reinforcing ribs 11. The symmetrically arranged fixing plates 7 are mounted on both sides of the connecting flange 5. Each end of the fixing plate 7 has a bolt hole for mounting bolts to secure it to the connecting flange 5. The arc-shaped middle of the fixing plate 7 accommodates the shape of the arc-shaped plate 8. The push rod 3 is located inside the arc-shaped plate 8, and the arc-shaped plates 8 on both sides protect the inner push rod 3. The protective plates 9 at both ends of the arc-shaped plate 8 also provide the same protection. The raised rib 10 in the middle of the fixing plate 7 increases its strength and reduces the likelihood of breakage. The reinforcing ribs 11 on the sides of the protective plate 9 and mounting plate 6 also ensure strength and prevent breakage at the connection between the mounting plate 6 and the protective plate 9.

[0024] A bolt 12 is provided between the mounting plates 6, passing through both sides of the mounting plates 6. The bolt 12 is inserted into the end of the pedal arm 2. A torsion spring 13 is provided between the bolt 12 and the mounting plate 6. A baffle plate 14 is provided on the mounting plate 6. The pedal arm 2 is hinged to the inner side of the mounting plate 6 through the bolt 12. The torsion spring 13 is used for the return of the pedal arm 2. The baffle plate 14 controls the position of the pedal arm 2 to prevent excessive return, thus playing a certain role in protecting the driver. At the same time, it can also protect the connection between the pedal arm 2 and the mounting plate 6, preventing external objects from falling into the connection between the pedal arm 2 and the mounting plate 6, and preventing external objects from getting caught and causing the torsion spring 13 to break.

[0025] The mounting bracket 1 has a brake master cylinder 15 on its side, and a push rod 3 is installed inside the brake master cylinder 15. The brake master cylinder 15 is equipped with a reservoir 16. The push rod 3 moves inside the brake master cylinder 15 under the action of the pedal arm 2, pushing the brake fluid to flow in the reservoir 16 and the brake lines to ensure stable operation.

[0026] The push rod 3 is connected to the pedal arm 2 at one end with a connecting end 17. The connecting end 17 is provided with a locking claw 18, and the pedal arm 2 is provided with a buckle 19. The locking claw 18 is connected to the pedal arm 2 through the buckle 19. The locking plate covers both sides of the pedal arm 2 from both sides. The buckle 19 is a rod that passes through the pedal arm 2 and a pin inserted into the rod. The locking claw 18 is fixed to the pedal arm 2 by the cooperation of the rod and the pin. The two locking claws 18 can also improve the stability and reliability of the connection, prevent loosening or slippage during force transmission, ensure reliable connection, and avoid direct metal-to-metal collision during operation, thereby avoiding abnormal noise.

[0027] A reinforcing plate 20 is provided between the mounting plates 6. The end of the reinforcing plate 20 is fixed to the vehicle body by bolts. The reinforcing plate 20 can also fix the other end of the mounting plate 6 away from the guard plate 9, so as to prevent the mounting plate 6 from being twisted due to the lack of support at the end of the pedal arm 2 connected to the mounting plate 6 when the pedal 4 is stepped down.

[0028] The reinforcing plate 20 is stepped, and its two sides abut against the inner wall surface of the mounting plate 6. The reinforcing plate 20 supports the mounting plates 6 on both sides of the column, preventing the mounting plates 6 on both sides from bending towards each other and improving the overall installation strength.

[0029] The technical effect of this utility model is as follows: by changing the connection position and setting method of the push rod 3 and the pedal arm 2, the overall leverage ratio of the brake pedal 4 is improved, the booster and other equipment used for pedaling assistance are removed, the overall volume of the equipment is reduced, making it easier to pedal the brake pedal 4, and also facilitating the layout of the whole vehicle and saving internal space.

[0030] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A brake pedal and master cylinder connection structure, characterized by: The device includes a mounting bracket (1) installed on the vehicle body. The mounting bracket (1) has a foot arm (2) on its inner side. One end of the foot arm (2) is connected to the mounting bracket (1). The mounting bracket (1) has a push rod (3) in the middle. The push rod (3) passes through the mounting bracket (1) and is connected to the foot arm (2). The other end of the foot arm (2) has a pedal (4). The connection point between the foot arm (2) and the push rod (3) is located between the two ends of the foot arm (2).

2. The brake pedal and master cylinder connection structure according to claim 1, characterized by: The mounting bracket (1) is divided into a connecting flange (5) connected to the vehicle body and a mounting plate (6) set on the connecting flange (5). The end of the foot arm (2) is hinged between the mounting plates (6) on both sides.

3. The brake pedal and master cylinder connection structure according to claim 2, characterized by: The connecting flange (5) is provided with a fixing plate (7) by bolts. The inner side of the fixing plate (7) is provided with an arc plate (8) and a guard plate (9). The mounting plate (6) is set on the guard plate (9). The middle part of the fixing plate (7) is arc-shaped. The middle part of the fixing plate (7) is provided with a protruding rib (10). The guard plate (9) and the mounting plate (6) are provided with reinforcing ribs (11).

4. A brake pedal and master cylinder connection structure according to claim 2 or 3, characterized in that: A bolt (12) is provided between the mounting plates (6) and passes through the two mounting plates (6). The bolt (12) is inserted into the end of the pedal arm (2). A torsion spring (13) is provided between the bolt (12) and the mounting plate (6). A cover plate (14) is provided on the mounting plate (6).

5. The brake pedal and master cylinder connection structure according to claim 1, characterized in that: The mounting bracket (1) has a brake master cylinder (15) on its side, the push rod (3) is located inside the brake master cylinder (15), and the brake master cylinder (15) has a reservoir (16).

6. A brake pedal and master cylinder connection structure according to claim 1 or 5, characterized in that: The push rod (3) is connected to the pedal arm (2) at one end with a connecting end (17). The connecting end (17) is provided with a locking claw (18). The pedal arm (2) is provided with a buckle (19). The locking claw (18) is connected to the pedal arm (2) through the buckle (19).

7. A brake pedal and master cylinder connection structure according to claim 2 or 3, characterized in that: A reinforcing plate (20) is provided between the mounting plates (6), and the end of the reinforcing plate (20) is fixed to the vehicle body by bolts.

8. The brake pedal and master cylinder connection structure according to claim 7, characterized in that: The reinforcing plate (20) is stepped, and the two sides of the reinforcing plate (20) abut against the inner wall surface of the mounting plate (6).

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