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Hydraulic auxiliary actuator and vehicle comprising same

An actuator, hydraulic technology, applied in the direction of non-mechanical drive clutches, clutches, mechanical equipment, etc., can solve the problems of low functional safety level, the clutch is no longer disengaged, etc., to increase comfort, reduce clutch pedal force, optimize Effect of clutch actuation behavior

Active Publication Date: 2016-05-11
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] On the other hand, in the worst case, if the motor fails, the clutch will no longer disengage
Therefore, the functional safety level is very low

Method used

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  • Hydraulic auxiliary actuator and vehicle comprising same
  • Hydraulic auxiliary actuator and vehicle comprising same
  • Hydraulic auxiliary actuator and vehicle comprising same

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Experimental program
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Effect test

Embodiment Construction

[0030] Embodiments according to the present invention will hereinafter be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding parts are denoted by the same numerals and symbols, and repeated descriptions will be omitted. Terms such as "front" and "rear" used to represent directions in this specification do not limit the present invention.

[0031] figure 1 An arrangement diagram of a hydraulic auxiliary actuator according to the invention is shown. The hydraulic auxiliary actuator 50 according to the invention can be used for disengaging clutches in the automotive sector, but can also be used for actuating brake cylinders. Preferably, the case where the hydraulic auxiliary actuator 50 can be used for the clutch will be described below.

[0032] The hydraulic auxiliary actuator 50 is typically mounted on the exterior of the automotive transmission. Such as figure 1 As shown, the vehicle has a hydr...

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Abstract

The invention discloses a hydraulic auxiliary actuator and a vehicle comprising the same. One side of the hydraulic auxiliary actuator is connected to a pedal assembly of the vehicle. The other side of the hydraulic auxiliary actuator is connected to a clutch assembly of the vehicle. The hydraulic auxiliary actuator comprises a motor, a ball screw and a hydraulic cylinder assembly, wherein the hydraulic cylinder assembly is connected to the ball screw so as to be driven by the ball screw. The hydraulic cylinder assembly comprises a cylinder shell, a second piston, a first piston, a third piston, a first pre-tightening spring and a second pre-tightening spring, wherein the second piston, the first piston and the third piston are sequentially arranged in the cylinder shell; the second piston is pre-tightened relative to the first piston through the first pre-tightening spring, and the third piston is pre-tightened relative to the first piston through the second pre-tightening spring. The cylinder shell is provided with a hole, so that the hydraulic cylinder assembly is in fluid communication with the pedal assembly. The hole is located between a second sealing ring of the second piston and a third sealing ring of the third piston in the axial direction of the cylinder shell, and the first piston can move to pass through the hole.

Description

technical field [0001] The invention relates to a hydraulic auxiliary actuator and a vehicle comprising it. Background technique [0002] Clutches in the automotive field are usually actuated hydraulically. Image 6 A conventional hydraulic clutch release system for a manual transmission, which is common in the Chinese and European markets, is schematically shown, wherein the clutch employs a diaphragm spring. The hydraulic clutch separation system mainly includes a master cylinder, a slave cylinder and a high-pressure pipe connecting the master cylinder and the slave cylinder. when Image 6 When the clutch pedal on the upper side is actuated, the piston in the master cylinder will push the fluid in the system and transmit the pressure to the slave cylinder through the high pressure pipe, then the piston in the slave cylinder will push the shift fork through the piston rod, and finally the separate Image 6 Clutch in the bell housing on the underside. Further, when the clu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/06
CPCF16D48/066F16D29/005F16D48/04F16D2048/0212F16D2048/0254F16D2500/1024F16D2500/1025F16D2500/3026F16D2500/31413
Inventor 黄超李哲
Owner SCHAEFFLER TECH AG & CO KG
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