Central valve type motorcycle brake master cylinder

Abstract

The utility model provides a kind of center valve type motorcycle brake master cylinder, belong to motor vehicle braking technical field.It solves the unstable situation of the oil pressure in brake pipeline when braking of existing brake master cylinder, and brake pipeline cannot keep certain residual pressure when removing brake, which affects the braking effect of brake master cylinder problem.This center valve type motorcycle brake master cylinder, including brake master cylinder cylinder body, brake pipeline is connected to brake master cylinder cylinder body, brake chamber is arranged in brake master cylinder cylinder body, the upper end of brake master cylinder cylinder body is provided with oil storage chamber, the inside of brake master cylinder cylinder body is provided with piston part that is active in brake chamber, connecting spring is arranged between piston part and brake master cylinder cylinder body, brake handle is provided on brake master cylinder cylinder body, fixedly arranged with locating rod in brake master cylinder cylinder body, locating sliding slot is opened on piston part, check assembly is arranged in piston part.The utility model has the advantages of good braking effect and easy installation.

Description

Technical Field

[0001] This utility model belongs to the field of motor vehicle braking technology, and relates to a brake master cylinder, particularly a center valve type motorcycle brake master cylinder. Background Technology

[0002] The master cylinder is the main braking component in a motor vehicle's hydraulic braking system. The brake fluid output from it is fed into the brake wheel cylinders on the brake disc through the outlet port and brake lines, thereby achieving the purpose of braking the motor vehicle.

[0003] The existing brake master cylinder experiences unstable oil pressure in the brake lines during braking, and the brake lines cannot maintain a certain residual pressure when the brake is released, which affects the braking performance of the brake master cylinder. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a center valve type motorcycle brake master cylinder that offers good braking performance and is easy to install.

[0005] The objective of this utility model can be achieved through the following technical solution: A center valve type motorcycle brake master cylinder, comprising a brake master cylinder body, wherein a brake pipeline is connected to the outside of the brake master cylinder body, characterized in that a brake chamber is provided inside the brake master cylinder body, an oil reservoir is provided at the upper end of the brake master cylinder body, the oil reservoir and the brake chamber are connected through an oil outlet hole, a piston part that moves within the brake chamber is provided inside the brake master cylinder body, a connecting spring is provided between the piston part and the brake master cylinder body, a brake handle is provided on the brake master cylinder body that connects to the piston part and can control the forward and backward movement of the piston part, a positioning rod for positioning the piston part is fixedly provided inside the brake master cylinder body, a positioning groove corresponding to the positioning rod is provided on the piston part, and a check valve assembly for preventing backflow is provided inside the piston part.

[0006] In the aforementioned center valve type motorcycle brake master cylinder, the piston section has an open space for the movement of the check valve, and both ends of the open space have oil passage holes for oil passage. The check valve assembly consists of a fixed rod and a check valve. One end of the fixed rod extends out of the open space and abuts against the positioning rod. A return spring is provided between the piston section and the check valve.

[0007] In the aforementioned center valve type motorcycle brake master cylinder, one end of the piston is disposed inside the brake master cylinder body, and the other end of the piston extends out of the brake master cylinder body and is connected to the brake handle.

[0008] In the aforementioned center valve type motorcycle brake master cylinder, a mounting part one for a brake handle is provided at the rear end of the brake master cylinder body, and a mounting part two for a motorcycle handle is provided at the front end of the brake master cylinder body. The brake handle is rotatably mounted on the mounting part one via a pivot.

[0009] Compared with existing technologies, the piston in this center-valve motorcycle brake master cylinder works in conjunction with the brake lever to move within the brake chamber of the brake master cylinder, resulting in a more stable braking effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0012] Figure 3 This is a schematic diagram of the piston part in this utility model.

[0013] In the diagram, 1. Brake master cylinder body; 2. Brake chamber; 3. Oil reservoir; 4. Oil outlet; 5. Piston part; 6. Connecting spring; 7. Brake handle; 8. Positioning rod; 9. Positioning groove; 10. Check valve assembly; 11. Oil passage hole; 12. Fixing rod; 13. Check valve; 14. Return spring; 15. Mounting part one; 16. Mounting part two. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figure 1 , Figure 2 , Figure 3 As shown, this center valve type motorcycle brake master cylinder includes a brake master cylinder body 1, a brake line connected to the brake master cylinder body 1, a brake chamber 2 inside the brake master cylinder body 1, an oil reservoir 3 at the upper end of the brake master cylinder body 1, and an oil outlet 4 connecting the oil reservoir 3 and the brake chamber 2. A piston part 5 that moves within the brake chamber 2 is provided inside the brake master cylinder body 1. A connecting spring 6 is provided between the piston part 5 and the brake master cylinder body 1. A brake handle 7 connected to the piston part 5 and capable of controlling the forward and backward movement of the piston part 5 is provided on the brake master cylinder body 1. A positioning rod 8 for positioning the piston part 5 is fixedly provided inside the brake master cylinder body 1. A positioning groove 9 corresponding to the positioning rod 8 is provided on the piston part 5. A check valve assembly 10 for preventing backflow is provided inside the piston part 5.

[0016] To elaborate further, the piston part 5 has an active space for the check valve 13 to move, and both ends of the active space have oil passage holes 11 for oil passage. The check valve assembly 10 consists of a fixed rod 12 and a check valve 13. One end of the fixed rod 12 extends out of the active space and abuts against the positioning rod 8. A return spring 14 is provided between the piston part 5 and the check valve 13.

[0017] To elaborate further, when the brake handle 7 applies the brakes, it drives the piston 5 to move forward within the brake chamber 2. The brake fluid in the reservoir 3 enters the brake chamber 2 through the outlet hole 4, passes through the oil passage hole 11 on the piston 5, enters the front end of the brake chamber 2, and enters the brake line connected to the master cylinder 1 to brake the vehicle. When the brake handle 7 releases the pressure on the piston 5, the piston 5 returns to its original position under the action of the connecting spring 6, the brake fluid flows back, and the braking of the vehicle is released.

[0018] To elaborate further on the function of the check valve assembly 10, when the master cylinder 1 is braking, the brake fluid applies pressure to the check valve 13, pushing it to the left. When all the brake fluid is output, the return spring 14 pushes the check valve 13 back to prevent the brake fluid from flowing back. When the master cylinder 1 stops braking, the brake fluid flows back. At the same time, the fixing rod 12 of the check valve 13 abuts against the positioning rod 8, and the oil passage 11 is in the open state.

[0019] To elaborate further, one end of the piston part 5 is located inside the brake master cylinder body 1, and the other end of the piston part 5 extends out of the brake master cylinder body 1 and is connected to the brake handle 7.

[0020] To elaborate further, the rear end of the master cylinder body 1 is provided with a mounting part 15 for the brake handle 7, and the front end of the master cylinder body 1 is provided with a mounting part 16 for the motorcycle handle. The brake handle 7 is rotatably mounted on the mounting part 15 via a pivot.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document frequently uses terms such as brake master cylinder body 1, brake chamber 2, oil reservoir 3, oil outlet 4, piston part 5, connecting spring 6, brake handle 7, positioning rod 8, positioning groove 9, check valve assembly 10, oil passage hole 11, fixing rod 12, check valve 13, return spring 14, mounting part one 15, and mounting part two 16, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A center-valve type motorcycle brake master cylinder, comprising a brake master cylinder body (1), wherein the brake master cylinder body (1) is externally connected to a brake pipeline, characterized in that, The brake master cylinder body (1) is provided with a brake chamber (2), and the upper end of the brake master cylinder body (1) is provided with an oil reservoir (3). The oil reservoir (3) and the brake chamber (2) are connected by an oil outlet (4). The brake master cylinder body (1) is provided with a piston part (5) that moves in the brake chamber (2). A connecting spring (6) is provided between the piston part (5) and the brake master cylinder body (1). The brake master cylinder body (1) is provided with a brake handle (7) that connects to the piston part (5) and can control the piston part (5) to move back and forth. The brake master cylinder body (1) is fixedly provided with a positioning rod (8) for positioning the piston part (5). The piston part (5) is provided with a positioning groove (9) corresponding to the positioning rod (8). The piston part (5) is provided with a check valve assembly (10) for check valve.

2. A center-valve type motorcycle brake master cylinder according to claim 1, characterized in that, The piston part (5) has an open space for the check valve (13) to move, and oil passage holes (11) for oil passage are opened at both ends of the open space. The check valve assembly (10) consists of a fixed rod (12) and a check valve (13). One end of the fixed rod (12) extends out of the open space and abuts against the positioning rod (8). A return spring (14) is provided between the piston part (5) and the check valve (13).

3. A center-valve type motorcycle brake master cylinder according to claim 1, characterized in that, One end of the piston (5) is located inside the master cylinder (1), and the other end of the piston (5) extends out of the master cylinder (1) and is connected to the brake handle (7).

4. A center-valve type motorcycle brake master cylinder according to claim 1, characterized in that, The rear end of the brake master cylinder body (1) is provided with a mounting part one (15) for the brake handle (7), and the front end of the brake master cylinder body (1) is provided with a mounting part two (16) for the motorcycle handle. The brake handle (7) is rotatably mounted on the mounting part one (15) via a rotating shaft.

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