Electric parking braking force amplifier
An electronic parking brake and amplifier technology, applied in the direction of brakes, brake transmission devices, vehicle components, etc., can solve the problems of poor response in the braking process, slow initial response speed, and inability to meet changing braking requirements, etc. To achieve the effect of fast braking response
Active Publication Date: 2013-05-22
SUZHOU BOZHIDUN PROTECTION TECH CO LTD
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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.
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[0017] like Figure 1 to Figure 3 As shown, the electronic parking brake power amplifier of the present invention includes a driving wheel 1, an input cable 11 (not shown in the figure), a driven wheel 2, an output cable 21 (not shown in the figure) and a rotating shaft 3. The wheel 1 and the driven wheel 2 are respectively fixed and installed at different positions O1 and O2 along the axial direction 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 located on the opposite sides of the rotating shaft 3 respectively. That is, the driving wheel 1 and the driven wheel 2 are eccentrically and fixedly installed relative to the rota...
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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 whose amplification ratio can be continuously changed. Background technique [0002] In the traditional electronic parking brake system (EPB), the braking force cable of the servo unit is directly connected to the brake, and the structure is simple, but the parking braking force is not enough, which reduces the braking efficiency 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 of the system and slow action. In addition, if the value of the parking brake force increases, it will affect the design strength requirements and service life of the servo unit. Therefore, it is...
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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