Cooperating structure of clutch pedal and clutch master cylinder

Abstract

The invention provides a matching structure of a clutch pedal and a clutch main cylinder. The matching structure comprises a pedal base, a pedal arm and the clutch main cylinder. One end of the pedal arm is rotatably connected with the pedal base, the other end of the pedal arm is provided with a pedal pad, a first matching mechanism is arranged between the two ends of the pedal arm, the end of a pushing rod of the clutch main cylinder is provided with a second matching mechanism, the matching molded surface between the first matching mechanism and the second matching mechanism is molded, so that in the process of stepping down the pedal pad, the output force arm of the pedal arm is gradually decreased before the matching molded surface reaches the position corresponding to the position with the maximum separation force of the clutch, and the output force arm of the pedal arm is gradually increased after the matching molded surface reaches the position corresponding to the position with the maximum separation force of the clutch. According to the structure, stepping-down force of the clutch pedal is gentle through the simple structure, and the comfort of a driver is improved.

Description

technical field [0001] The invention relates to the field of clutch transmission of automobiles, in particular to a matching structure of a clutch pedal and a clutch master cylinder. Background technique [0002] During driving, the driver depresses or releases the clutch pedal to drive the clutch master cylinder to push the clutch cylinder, thereby pushing the clutch to separate or combine. [0003] In fact, the relationship between the separation force of the clutch pressure plate and the separation stroke during the clutch separation process is as follows: figure 1 As shown, there is no linear relationship between the separation force and the separation stroke, but the separation force first increases with the increase of the separation stroke until it reaches the position of the highest point A, and then the separation force will increase as the separation stroke continues to increase. decrease. Correspondingly, as figure 2 As shown, in the process of depressing the ...

AI Technical Summary

Problems solved by technology

[0004] In order to improve the driver's driving comfort, one improvement direction is to use electronic control means to measure the stroke of the clutch pedal through sensors, and then use electronic control-hydraulic or electronic control-motor devices to provide assistance to compensate for force changes during the pedaling process. However, this requires a complex electronic control structure, and the smoother the control process, the more sensors are required, the higher the accuracy, or the higher the requirements for hydraulic oil circuits and motors, which significantly increases the cost

Another direction of improvement is to use mechanical means: for example, in the Chinese invention patent application with the application publication number CN102029905A and the invention name "a clutch pedal assembly", two booster springs are used to provide power to improve the operating comfort of the clutch pedal. However, this scheme cannot fit the depressing force required by the clutch pedal to such image 3 The state shown; For example, in the Chinese invention patent application with the application publication number CN102481846A, the invention name "clutch pedal device", and the priority is DE102009038051.5, the clutch pedal is optimized by limiting the working process of the tension spring. force, which actually limits the winding structure of the spring, and the complex spring winding structure brings higher processing costs and parts replacement costs, because it is well known that the production and maintenance costs of springs with standard structures are much higher. It is lower than the non-standard spring, and as the clutch pedal is repeatedly stepped on, the elastic coefficient of the non-standard spring is extremely easy to change. In fact, this solution cannot be well realized. image 3 Desired pedaling force indicated

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