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Electric parking braking force amplifier

An electronic parking brake and amplifier technology, applied in the direction of brakes, brake transmissions, vehicle components, etc., can solve the problems of poor response in the braking process, inability to meet changing braking requirements, and slow initial response speed. Achieve fast braking response

Active Publication Date: 2014-11-05
SUZHOU BOZHIDUN PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above technology amplifies the output pulling force of the servo unit, but there are still problems: the multiple of the pulling force amplification is constant, which cannot meet the changing braking requirements, the initial reaction speed is slow, and the response of the braking process is poor.

Method used

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  • Electric parking braking force amplifier
  • Electric parking braking force amplifier

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Embodiment Construction

[0017] Such as Figure 1 to Figure 3 As shown, the electronic parking brake booster of the present invention includes a driving wheel 1, an input pull wire 11 (not shown in the figure), a driven wheel 2, an output pull wire 21 (not shown in the figure) and a rotating shaft 3. The wheel 1 and the driven wheel 2 are respectively fixedly installed at different axial positions O1 and O2 of the rotating shaft 3, that is, O1 is the rotation center of the driving wheel 1, and O2 is the rotation center of the driven wheel 2. When the input cable 11 on the outer edge pulls the driving wheel 1 to rotate, the driven wheel 2 is driven to rotate through the rotating shaft 3, thereby driving the output cable 21 around the outer edge of the driven wheel 2 to move. The center O4 of the circle is respectively located on two sides opposite to the rotation axis 3 . That is, the driving wheel 1 and the driven wheel 2 are eccentrically fixedly installed relative to the rotating shaft 3 in opposit...

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Abstract

The invention discloses an electric parking braking force amplifier. The electric parking braking force amplifier comprises a driving wheel, an input stay wire, a driven wheel, an output stay wire and a rotating shaft. The driving wheel and the driven wheel are respectively and fixedly arranged on different positions along the axial direction of the rotating shaft, when the input stay wound on the outer edge of the driving wheel drives the driving wheel to rotate, the rotating shaft drives the driven wheel to rotate, and therefore the output stay line wound on the outer edge of the driven wheel can be driven to move. The circle center of the driving wheel and the circle center of the driven wheel are respectively arranged on two opposite sides of the rotating shaft. By means of the electric parking braking force amplifier, parking brake response speed can be improved greatly, and parking brake time can be shortened.

Description

technical field [0001] The invention belongs to the technical field of force amplifiers, in particular to an electronic parking brake force amplifier with continuously variable amplification ratio. Background technique [0002] In the traditional electronic parking brake system (EPB), the brake force cable of the servo unit is directly connected to the brake, which has a simple structure, but the parking brake force is not enough, which reduces the braking performance and efficiency of the parking brake system. In order to increase the parking braking force, the gear reduction mechanism in the servo unit needs to have a larger transmission ratio, but the increase of the transmission ratio will reduce the movement speed of the servo unit, resulting in prolonged braking time and slow action of the system. In addition, if the parking brake force becomes larger, it will affect the design strength requirements and service life of the servo unit. Therefore, it is necessary to add...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/74B60T13/02
Inventor 王洪亮丁义兰皮大伟周云波郑婷郑雅丽王显会
Owner SUZHOU BOZHIDUN PROTECTION TECH CO LTD