Single-cylinder 34 running and parking integrated EPB hydraulic disc brake

Abstract

The utility model discloses a single-cylinder 34 running and parking integrated EPB hydraulic disc brake which comprises a brake support, a brake caliper body is arranged on one side of the brake support, a guide pin penetrates through the brake caliper body in a sliding mode, the brake support is connected with the brake caliper body through the guide pin, a piston is arranged in the brake caliper body, and the piston is connected with the brake caliper body through the guide pin. A rectangular ring is arranged on the piston in an interference fit mode. According to the utility model, the hydraulic disc brake is combined with the EPB controller and is connected with the electronic hand brake of the whole vehicle, so that hydraulic pressure is input for driving braking during driving, and the whole vehicle outputs an electric signal to the EPB actuator for parking braking during parking, thereby realizing a driving and parking integrated braking system, reducing the weight and cost of the vehicle, and improving the safety of the vehicle. Therefore, the vehicle has higher response speed and accurate braking force distribution, the braking effect of the vehicle is improved, and the safety performance of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of EPB hydraulic disc brakes, in particular to a single-cylinder 34-row-station integrated EPB hydraulic disc brake. Background Art

[0002] Brakes are an important system on a vehicle, used to slow down and stop the vehicle. Their main function is to convert the vehicle's kinetic energy into heat energy by generating friction, thereby slowing down or stopping the vehicle. Brakes usually include disc brakes, drum brakes and hydraulic brakes. Hydraulic disc brakes are a common vehicle braking system, mainly composed of brake discs, brake calipers, brake pads and hydraulic systems. Their working principle is to transmit hydraulic pressure to make the brake caliper clamp the brake disc, thereby generating friction to slow down or stop the vehicle.

[0003] Existing hydraulic disc brakes are all hydraulically driven, generate braking torque, and have no parking function. They usually require manual operation and have a relatively slow response speed. In an emergency, they may not be able to respond quickly and achieve rapid braking, which limits the improvement of the vehicle's overall performance, increases the braking distance, weakens the vehicle's braking effect, and increases the risk of accidents. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing hydraulic disc brakes are all hydraulically driven to generate braking torque and have no parking function, which limits the improvement of the overall performance of the vehicle and increases the risk of accidents.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: a single-cylinder 34-row integrated EPB hydraulic disc brake, including a brake bracket, a brake caliper body is arranged on one side of the brake bracket, a guide pin slides through the brake caliper body, the brake bracket and the brake caliper body are connected by the guide pin, a piston is arranged in the brake caliper body, and a rectangular ring is interference fit on the piston.

[0006] Through the above technical solution, through the interference fit between the piston and the rectangular ring, the fixed rectangular ring can maintain the stable position of the piston, ensure the smooth and reliable transmission of the braking force, and improve the performance and response speed of the braking system.

[0007] The utility model is further configured that a piston dust cap is interference-fitted on the piston, and the brake caliper body is interference-fitted with the piston.

[0008] Through the above technical solution, the piston dust cap can effectively prevent dust, mud and other debris from entering the brake, preventing these foreign objects from affecting the piston seal and brake performance, while the interference fit between the two can ensure the sealing between the piston and the piston cylinder, avoid hydraulic fluid leakage, maintain the normal working state of the brake, and improve the efficiency and performance of the brake.

[0009] The utility model is further configured that a screw rod and a threaded sleeve are arranged in the piston, the screw rod is threadedly connected to the threaded sleeve, the screw rod is threadedly connected to the piston, and the brake caliper body is connected to the oil pipe of the whole vehicle.

[0010] Through the above technical solution, the oil pipe of the whole vehicle outputs oil pressure to push the piston and the brake lining to move forward. When the brake lining is pressed against the brake disc, service braking is achieved.

[0011] The utility model is further configured that one end of the screw is rotatably connected to the brake caliper body, and one side of the screw is splined with an EPB actuator.

[0012] Through the above technical solution, the whole vehicle outputs an electrical signal to the EPB actuator, the EPB actuator 3 starts to work, the screw rod cooperates with the threaded sleeve, so that the piston drives the brake lining to move forward and close to the brake disc, thereby realizing parking braking.

[0013] The utility model is further configured that a plane bearing is rotatably connected on the plane of the screw rod, and the plane bearing is fixedly connected to the brake caliper body.

[0014] Through the above technical solution, the plane bearing allows the screw to rotate more smoothly when subjected to force, reduces friction, reduces energy loss, and improves the working efficiency and output performance of the equipment.

[0015] The utility model is further configured that the threaded sleeve cooperates with the piston, and one end of the piston is fixedly connected with a brake lining.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model combines the hydraulic disc brake with the EPB controller and connects it to the electronic handbrake of the whole vehicle. When driving, the hydraulic pressure is input to make the piston move forward and press the brake lining against the brake disc to perform driving braking. When parking, the whole vehicle outputs an electrical signal to the EPB actuator, and the EPB actuator starts to work, so that the screw rod and the screw sleeve cooperate, and the piston presses the brake lining against the brake disc to perform parking braking, thereby realizing driving and parking integration and reducing the weight and cost of the vehicle. The driving and parking integration braking system has a faster response speed and precise braking force distribution, so it can help reduce the braking distance, make braking more precise, improve the braking effect of the vehicle, reduce the risk of accidents, improve the safety performance of the whole vehicle, and provide a safer driving environment for the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the utility model from the first perspective;

[0019] Figure 2 It is a three-dimensional cross-sectional view of the brake caliper body of the utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the utility model from a second viewing angle.

[0021] In the figure: 1. brake bracket; 2. brake caliper body; 3. EPB actuator; 4. brake lining; 5. piston dust cap; 6. rectangular ring; 7. piston; 8. screw sleeve; 9. screw; 10. plane bearing; 11. guide pin. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0023] See also Figure 1 , Figure 2 and Figure 3 The single-cylinder 34-row EPB hydraulic disc brake comprises a brake bracket 1, a brake caliper body 2 is arranged on one side of the brake bracket 1, a guide pin 11 slides through the brake caliper body 2, the brake bracket 1 and the brake caliper body 2 are connected by the guide pin 11, a piston 7 is arranged in the brake caliper body 2, and a rectangular ring 6 is interference fit on the piston 7.

[0024] A piston dust cap 5 is interference fit on the piston 7, and the brake caliper body 2 is interference fit with the piston 7; a screw 9 and a threaded sleeve 8 are arranged in the piston 7, the screw 9 is threadedly connected to the threaded sleeve 8, the screw 9 is threadedly connected to the piston 7, and the brake caliper body 2 is connected to the oil pipe of the whole vehicle; one end of the screw 9 is rotatably connected to the brake caliper body 2, and an EPB actuator 3 is splined on one side of the screw 9; a plane bearing 10 is rotatably connected on the plane of the screw 9, and the plane bearing 10 is fixedly connected to the brake caliper body 2; the threaded sleeve 8 and the piston 7 cooperate with each other, and a brake lining 4 is fixedly connected to one end of the piston 7.

[0025] When the utility model is in use, during parking brake, the whole vehicle outputs an electrical signal to the EPB actuator 3, and the EPB actuator 3 starts to work. Since the EPB actuator 3 is splined with the screw rod 9, the screw rod 9 is driven to start rotating. Since the screw rod 9 is threadedly connected with the screw sleeve 8, the screw rod 9 drives the screw sleeve 8 to move forward. When the two sides of the screw sleeve 8 are in contact with the piston 7, the screw sleeve 8 starts to drive the piston 7 to move forward together. The piston 7 drives the brake lining 4 to move forward and press against the brake disc, generating a parking braking torque to achieve parking brake. During driving brake, since the oil pipe of the whole vehicle is connected to the brake caliper body 2, the oil pipe of the whole vehicle outputs oil pressure, and the oil pressure directly acts on the piston 7 to push the piston 7 forward. The piston 7 presses the brake lining 4 against the brake disc to generate a driving braking torque to achieve driving brake.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A single-cylinder 34-row EPB hydraulic disc brake, comprising a brake bracket (1), characterized in that: A brake caliper body (2) is provided on one side of the brake bracket (1), a guide pin (11) is slidably passed through the brake caliper body (2), the brake bracket (1) and the brake caliper body (2) are connected via the guide pin (11), a piston (7) is provided in the brake caliper body (2), and a rectangular ring (6) is interference-fitted on the piston (7).

2. The single-cylinder 34-row EPB hydraulic disc brake according to claim 1 is characterized in that: A piston dust cap (5) is interference-fitted on the piston (7), and the brake caliper body (2) and the piston (7) are interference-fitted.

3. The single-cylinder 34-row EPB hydraulic disc brake according to claim 1 is characterized in that: A screw rod (9) and a threaded sleeve (8) are arranged in the piston (7); the screw rod (9) and the threaded sleeve (8) are threadedly connected; the screw rod (9) and the piston (7) are threadedly connected; and the brake caliper body (2) is connected to the oil pipe of the whole vehicle.

4. The single-cylinder 34-row EPB hydraulic disc brake according to claim 3 is characterized in that: One end of the screw rod (9) is rotatably connected to the brake caliper body (2), and one side of the screw rod (9) is spline-matched with the EPB actuator (3).

5. The single-cylinder 34-row EPB hydraulic disc brake according to claim 3 is characterized in that: The screw rod (9) is rotatably connected to a plane bearing (10), and the plane bearing (10) is fixedly connected to the brake caliper body (2).

6. The single-cylinder 34-row EPB hydraulic disc brake according to claim 3 is characterized in that: The threaded sleeve (8) and the piston (7) cooperate with each other, and a brake lining (4) is fixedly connected to one end of the piston (7).

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