An electronically controlled hydraulic integrated multi-cylinder brake caliper

Abstract

The invention relates to an electronically controlled hydraulic integrated multi-cylinder brake caliper, which is characterized in that it comprises a brake caliper body, a piston, a threaded sleeve, a screw, an inner brake block assembly, an outer brake block assembly, a bracket, a guide pin and a bolt; the invention belongs to a disc brake, can provide greater braking force, can be used in commercial vehicles, has good heat dissipation, and has good water stability and thermal stability of braking efficiency; it has both driving brake and parking brake functions, can be controlled by electronic and hydraulic transmission devices, has an emergency brake function, works reliably and stably, has a compact structure and is easy to arrange; the parking function is electronically controlled, and can realize automatic adjustment of the braking force of the vehicle on different slopes and realize the automatic parking function; the threaded sleeve used is an integrated double pressure head structure, and the brake block assembly has two force-bearing parts, which increases the force-bearing area, is evenly stressed, and the brake block is not easy to tilt up, ensuring good contact with the brake disc, balanced wear, and increasing the service life of the brake.

Description

Technical Field

[0001] The invention relates to the technical field of automobile braking, and in particular to an electronically controlled hydraulic integrated multi-cylinder brake caliper. Background Art

[0002] In the field of automobile braking technology, disc brakes are generally used in passenger cars, especially the front wheels of cars. With the development of disc brake integrated parking technology, disc brakes are also used in the rear wheels of cars. The existing integrated calipers are single-cylinder structures and provide small braking torque. They can only be used in passenger cars or other vehicles under 3.5 tons, and cannot be used in cars with a full load weight of more than 3.5 tons, especially commercial vehicles.

[0003] At present, commercial vehicles basically use drum brakes for driving braking. The parking brake function can be achieved through a device integrated on the drum brake or through a central brake device installed on the drive shaft. However, after the drum brake is immersed in water, its performance is severely reduced and the recovery is slow. In addition, the heat dissipation is poor and the thermal decay is serious, making it difficult to achieve the braking requirements of intelligent driving. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an electronically controlled hydraulic integrated multi-cylinder brake caliper, which can provide more efficient and stable braking force for commercial vehicles, can be combined with a controller to realize automatic adjustment of the parking braking force under different slopes and realize the automatic parking function, has both service braking and parking braking functions, has a compact and reliable structure, and is easy to arrange.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: an electronically controlled hydraulic integrated multi-cylinder brake caliper, the innovation of which is: comprising a brake caliper body, a piston, a screw sleeve, a screw rod, an inner brake block assembly, an outer brake block assembly, a bracket, a guide pin and a bolt;

[0006] The brake caliper body is provided with two wheel cylinders and pistons are coaxially installed in the wheel cylinders, and a channel is cast between the two wheel cylinders of the brake caliper body; the brake caliper body is provided with an intermediate cylinder and the intermediate cylinder is located between the two wheel cylinders, the intermediate cylinder is coaxially equipped with a power part of a screw sleeve and the power part cooperates with the screw rod, and a connecting arm is provided on the power part, and a pressure head is respectively provided at both ends of the screw sleeve power part and the pressure head extends to be installed in the wheel cylinder with a piston and is coaxially assembled in the piston;

[0007] The bracket is mounted astride the brake disc, and a bracket guide hole is provided on the bracket; the brake caliper body bolt is fixedly connected to the guide pin and can slide along the bracket guide hole, the screw is installed in the brake caliper body and forms a spiral transmission mechanism with the screw sleeve power part, the inner brake pad assembly and the outer brake pad assembly are symmetrically arranged on both sides of the brake disc, and the inner brake pad assembly and the outer brake pad assembly can slide along the bracket groove.

[0008] Furthermore, a notch structure is provided at the end of the piston.

[0009] Furthermore, the depth of the notch at the end of the piston is greater than the thickness of the screw sleeve pressure head by more than 2.5 mm.

[0010] Furthermore, the screw sleeve is an integrated double-pressure head symmetrical structure, the two pressure head end planes of the screw sleeve are in the same plane, and the central area of ​​the pressure head is a circular concave structure.

[0011] Furthermore, the pressure head of the screw sleeve is higher than the connecting arm by more than 0.5 mm.

[0012] The advantages of the present invention are:

[0013] 1) The present invention belongs to a disc brake, which can provide greater braking force and can be used in commercial vehicles. It has good heat dissipation, good water stability and thermal stability of braking efficiency. The present invention has both driving braking and parking braking functions, can be controlled by electronic and hydraulic transmission devices, has emergency braking function, works reliably and stably, has compact structure and is easy to arrange. The parking function of the present invention can realize automatic adjustment of the braking force of the vehicle on different slopes and realize automatic parking function through electronic control, which is easy to realize the braking requirements of intelligent driving. The screw sleeve of the present invention is an integrated double pressure head structure, and the brake block assembly has two force-bearing parts, which increases the force-bearing area, is evenly stressed, and the brake block is not easy to lift up, ensuring good contact with the brake disc, balanced wear, and increasing the service life of the brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a schematic diagram of an exploded view of an electronically controlled hydraulic integrated multi-cylinder brake caliper of the present invention.

[0016] Figure 2 It is a schematic diagram of a brake caliper body of an electronically controlled hydraulic integrated multi-cylinder brake caliper of the present invention.

[0017] Figure 3 The figure is a schematic diagram of the piston structure of an electronically controlled hydraulic integrated multi-cylinder brake caliper of the present invention.

[0018] Figure 4 The present invention is a schematic diagram of the threaded sleeve structure of an electronically controlled hydraulic integrated multi-cylinder brake caliper. DETAILED DESCRIPTION

[0019] The following embodiments can enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0020] like Figures 1 to 4The electronically controlled hydraulic integrated multi-cylinder brake caliper shown includes a brake caliper body 1, a piston 2, a threaded sleeve 3, a screw rod 4, an inner brake block assembly 5, an outer brake block assembly 6, a bracket 7, a guide pin 8 and a bolt 9.

[0021] Two wheel cylinders 11 are provided on the brake caliper body 1 and pistons 2 are coaxially installed in the wheel cylinders 11, and a channel is cast between the two wheel cylinders 11 of the brake caliper body 1; an intermediate cylinder 12 is provided on the brake caliper body 1 and the intermediate cylinder 12 is located between the two wheel cylinders 11, a power part 33 of a screw sleeve 3 is coaxially installed in the intermediate cylinder 12 and the power part 33 cooperates with the screw rod 4, a connecting arm 32 is provided on the power part 33, and a pressure head 31 is respectively provided at both ends of the screw sleeve power part 33 and the pressure head 31 extends to the wheel cylinder 11 installed with the piston 2 and is coaxially installed in the piston 2.

[0022] The bracket 7 is mounted astride the brake disc 10, and a bracket guide hole is provided on the bracket 7; the brake caliper body 1 is fixedly connected to the guide pin 8 by a bolt 9 and can slide along the bracket guide hole, the screw 4 is installed in the brake caliper body 1 and forms a spiral transmission mechanism with the power part of the screw sleeve 3, the inner brake pad assembly 5 and the outer brake pad assembly 6 are symmetrically arranged on both sides of the brake disc 10, and the inner brake pad assembly 5 and the outer brake pad assembly 6 can slide along the bracket groove.

[0023] The end of the piston 2 is provided with a notch 21 .

[0024] The depth of the notch 21 at the end of the piston 2 is greater than the thickness of the pressure head 31 of the screw sleeve 3 by more than 2.5 mm.

[0025] The screw sleeve 3 is an integrated double-pressure head 31 symmetrical structure, the two pressure head end planes of the screw sleeve 3 are in the same plane, and the center area of ​​the pressure head is a circular concave structure.

[0026] The pressure head 31 of the screw sleeve 3 is higher than the connecting arm 32 by more than 0.5 mm.

[0027] The working principle is:

[0028] During service braking, the hydraulic pressure in the wheel cylinder 11 of the brake caliper body actuates the piston 2 to move, and the piston 2 pushes the inner brake pad assembly 5 to press against the brake disc 10. At the same time, the hydraulic pressure in the wheel cylinder 11 of the brake caliper body pushes the brake caliper body 1 to move in the opposite direction of the movement of the piston. The brake caliper body hook 13 drives the outer brake pad assembly 6 to press against the fixed disc 10. Finally, the inner brake pad assembly 5 and the outer brake pad assembly 6 clamp the brake disc with equal force, thereby achieving the purpose of slowing down or stopping the vehicle; during parking braking, the actuator is energized to drive the screw 4 to rotate. Since the rotation of the screw sleeve 3 is restricted by the piston, the screw sleeve 3 is 4 can only move axially, the screw sleeve 3 pushes the inner brake block assembly 5 to press against the brake disc 10, and at the same time, the screw 4 drives the brake caliper body 1 to move in the opposite direction of the screw sleeve 3 due to the axial reaction of the screw sleeve 3, and the brake caliper body hook 13 drives the outer brake block assembly 6 to press against the brake disc 10, and finally the inner brake block assembly 5 and the outer brake block assembly 6 clamp the brake disc with equal force to achieve parking brake. Due to the self-locking characteristics of the screw sleeve mechanism, after the actuator is powered off, the clamping force of the brake caliper remains unchanged, so the function of long-term stable parking can be achieved, and the electric control brake can also achieve emergency braking function when driving.

[0029] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electronically controlled hydraulic integrated multi-cylinder brake caliper, characterized in that: It includes a brake caliper body, a piston, a threaded sleeve, a screw, an inner brake block assembly, an outer brake block assembly, a bracket, a guide pin and a bolt; The brake caliper body is provided with two wheel cylinders and pistons are coaxially installed in the wheel cylinders, and a channel is cast between the two wheel cylinders of the brake caliper body; the brake caliper body is provided with an intermediate cylinder and the intermediate cylinder is located between the two wheel cylinders, and the power part of the screw sleeve is coaxially installed in the intermediate cylinder and the power part cooperates with the screw, and a connecting arm is provided on the power part; a pressure head is respectively provided at both ends of the screw sleeve power part, and the pressure head extends to be installed in the wheel cylinder with the piston and is coaxially installed in the piston; The end of the piston is provided with a notch structure; The screw sleeve is an integrated double-pressure head symmetrical structure, the two pressure head end planes of the screw sleeve are in the same plane, and the center area of ​​the pressure head is a circular concave structure; The bracket is mounted astride the brake disc, and a bracket guide hole is provided on the bracket; the brake caliper body bolt is fixedly connected to the guide pin and can slide along the bracket guide hole, the screw is installed in the brake caliper body and forms a spiral transmission mechanism with the screw sleeve power part, the inner brake pad assembly and the outer brake pad assembly are symmetrically arranged on both sides of the brake disc, and the inner brake pad assembly and the outer brake pad assembly can slide along the bracket groove.

2. The electronically controlled hydraulic integrated multi-cylinder brake caliper according to claim 1, characterized in that: The depth of the notch at the end of the piston is greater than the thickness of the screw sleeve pressure head by more than 2.5 mm.

3. The electronically controlled hydraulic integrated multi-cylinder brake caliper according to claim 1, characterized in that: The pressure head of the screw sleeve is higher than the connecting arm by more than 0.5 mm.

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