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Electronic brake power assisting device with sliding lead screw structure

A technology of electronic brakes and booster devices, applied in the direction of brake transmissions, brakes, vehicle components, etc., can solve the problems of poor braking operation feeling, etc., and achieve the effects of low production cost, convenient braking, and simple structure

Active Publication Date: 2015-12-16
NINGBO TUOPU INTELLIGENT BRAKE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydraulic vacuum booster uses the hydraulic pressure generated by the master cylinder to assist, so it can be installed anywhere between the master cylinder and the wheel cylinder, but the brake operation feeling is generally worse than that of the direct acting vacuum booster

Method used

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  • Electronic brake power assisting device with sliding lead screw structure
  • Electronic brake power assisting device with sliding lead screw structure
  • Electronic brake power assisting device with sliding lead screw structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] When the device is installed in the brake system, the brake pedal is connected to the ejector rod 1, and the pinion 6 is tightly connected to the motor shaft 5. When the driver steps on the pedal, the ejector rod 1 moves forward, and the motor receives the signal Starting to rotate, the motor shaft 5 drives the pinion 6 to rotate. The pinion 6 transmits the torque to the secondary reduction gear 8 through the primary reduction gear 7. Due to the gear ratio, the rotation speed of the motor is transmitted to the secondary reduction gear 8 will be decelerated, the secondary reduction gear 8 drives the rotary motion of the sliding nut 3, the sliding nut 3 converts the rotary motion into the linear motion of the sliding screw 2 through the teeth and the thread on the sliding screw 2, and the sliding screw 2 will push the main The cylinder piston 9 can provide an extra force for the brake master cylinder 10 through the motor, so as to achieve the effect of providing power assi...

Embodiment 2

[0030] When the motor is damaged or any one of the pinion 6, the primary reduction gear 7 and the secondary reduction gear 8 fails to operate, it is necessary to use the disengagement structure of the device to assist, so as to avoid the damage caused by the booster. Unexpected driving accidents caused by failure, disengagement of the structure, mainly through the driver stepping on the brake pedal vigorously, so that the brake pedal pushes the ejector rod 1, and the ejector rod 1 pushes the sliding screw 2 and the sliding nut 3, and the positioning ring on the sliding nut 3 11 is disengaged from the secondary reduction gear 8, so that the sliding nut 3 can apply pressure toward the brake master cylinder 10, providing an additional force for the brake master cylinder 10, and achieving the effect of providing power assistance for the driver to brake.

Embodiment 3

[0032] When the structural strength of the sliding lead screw required by the entire booster changes, the strength of the entire structure can be increased by properly adjusting the tooth thickness of the sliding nut 3 and the sliding screw 2 .

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PUM

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Abstract

The invention relates to an electronic brake power assisting device with a sliding lead screw structure. A small gear is arranged at the end of a motor shaft. A first-level speed reduction gear engaged with the small gear is arranged on one side of the small gear. A second-level speed reduction gear is arranged on one side of the first-level speed reduction gear and engaged with the first-level speed reduction gear. A sliding nut sliding in the axial direction is arranged in the middle of the second-level speed reduction gear. The outer ring of the sliding nut is connected with the second-level speed reduction gear through positioning protrusions. A sliding screw rod rotationally connected with the sliding nut is arranged at the inner ring of the sliding nut. An ejector rod is arranged at one end of the sliding screw rod, and the other end of the sliding screw rod is connected with one end of a main cylinder piston, and the other end of the main cylinder piston is inserted in a brake master cylinder. The electronic brake power assisting device has the beneficial effects that the structure is simple, the production cost is low, and the rotation of a motor can be effectively converted into the sliding of the screw rod.

Description

technical field [0001] The invention relates to the technical field of sliding screw, in particular to an electronic brake booster equipped with a sliding screw structure. Background technique [0002] Brake booster is a brake booster widely used in light-duty vehicles to medium-sized vehicles. It can be roughly divided into vacuum booster, hydraulic booster and pneumatic booster. Vacuum booster can be roughly divided into direct-acting vacuum booster and hydraulic vacuum booster. Since the direct-acting vacuum booster directly assists the pedaling force, the braking operation feels good, so it is widely used in cars and small trucks, but because the pedaling force is directly used as a booster, it will be restricted by the installation space. The hydraulic vacuum booster uses the hydraulic pressure generated by the master cylinder to assist, so it can be installed anywhere between the master cylinder and the wheel cylinder, but the brake operation feeling is generally worse...

Claims

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Application Information

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IPC IPC(8): B60T13/74B60T13/52
CPCB60T13/52B60T13/746
Inventor 蒋开洪颜卫伟
Owner NINGBO TUOPU INTELLIGENT BRAKE SYST