Electronic braking/parking mechanism

Abstract

The invention provides an electronic braking / parking mechanism used in the technical field of automobile parts. A tooth part of a motor runner (2) of a motor (1) of the electronic braking / parking mechanism is connected with a tooth part of a screw rod runner (3) in an engaged manner. The screw rod runner (3) is fixedly connected with one end of a screw rod (4). The screw rod (4) is sleeved with avalve seat (5). Balls (6) are arranged between the valve seat (5) and the screw rod (4). The valve seat (5) is arranged to be of a movable structure, and the valve seat (5) is connected with a pistonrod (8) of a hydraulic cylinder (7). By means of the electronic braking / parking mechanism, the structure is simple, the balls and the screw rod are matched with the motor and the hydraulic cylinder sothat an output pressure port of the hydraulic cylinder can be directly connected to an original hydraulic system of an automobile in parallel, electronic control over clamps is reliably achieved, whole automobile matching and integration can be achieved, reliability is high, and precision is high.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and more specifically relates to an electronic braking / parking mechanism. Background technique [0002] At present, the electronic parking brake system generally adopts two types of cable traction and integrated calipers. For the cable traction mechanism, the installation cost is low, but because the motor is used to drive the cable to achieve braking, it takes up a lot of space, which is not conducive to the overall structural layout, and the accuracy is not high, so it is not suitable for electronic systems. The integrated caliper type requires brake calipers, motors, belt gears, etc., so the cost is relatively high. Moreover, the integrated caliper structure brake uses a motor to directly act on the screw through a reducer, and the screw drives the brake piston to move axially through a bolt and nut mechanism. To achieve braking, bolts and nuts consume a lot of energy in the process of con...

AI Technical Summary

Problems solved by technology

For the cable traction mechanism, the installation cost is low, but because the motor is used to drive the cable to achieve braking, it takes up a lot of space, which is not conducive to the overall structural layout, and the accuracy is not high, so it is not suitable for electronic systems

The integrated caliper type requires brake calipers, motors, belt gears, etc., so the cost is relatively high. Moreover, the integrated caliper structure brake uses a motor to directly act on the screw through a reducer, and the screw drives the brake piston to move axially through a bolt and nut mechanism. To achieve braking, bolts and nuts consume a lot of energy in the process of converting rotational motion into translational motion, which can easily cause overheating of the braking system, and its axial movement accuracy is not easy to control, resulting in inaccurate braking force

Images