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Actuators for hydraulic or pneumatic controls

A pneumatic control and actuator technology, which is applied in fluid pressure actuators, fluid-driven clutches, mechanical-driven clutches, etc., can solve problems such as the inability to prevent dust from entering the internal volume of the bellows, and achieve the effect of promoting movement

Active Publication Date: 2020-10-13
PEZHO SITROEN AUTOMOBILS SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution only limits the penetration of dust into the inner volume of the bellows, but does not prevent the penetration of dust into the inner volume of the bellows

Method used

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  • Actuators for hydraulic or pneumatic controls
  • Actuators for hydraulic or pneumatic controls
  • Actuators for hydraulic or pneumatic controls

Examples

Experimental program
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Embodiment Construction

[0054] In the description and claims, the terms "outer" and "inner" and the orientations "axial" and "radial" shall be used to refer to elements of the control device actuator according to the definitions given in the description. By convention, the "radial" orientation is orthogonal to the X-axis that determines the "axial" orientation of the piston sliding in the bore of the cylinder body and away from that axis from the inside to the outside. The terms "outer" and "inner" are used to define the relative position of one element relative to another about the X-axis; thus, elements near the X-axis are considered inner, as opposed to radially outer elements. Furthermore, the terms "rear" AR and "front" AV are used to define the relative position of one element with respect to another in the axial direction, elements intended to be placed near the end of the control rod opposite the piston are designated as rear , while components intended to be placed near the end of the piston...

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PUM

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Abstract

The invention relates to an actuator for a hydraulic or pneumatic control device, comprising: a cylindrical body (8); a piston (10) sliding inside the body (8); capable of moving between an extended position and a retracted position a moving lever (12), a stop (28) protruding radially from the lever (12) and configured to interact with a stop surface (30) on the cylindrical body (8); a protective sleeve (16), The protective cover surrounds the lever (12) and comprises in succession: a first end (17) attached to the main body (8); a rigid part (21) inside which the stopper (28) moves; having a retracted state and an extended The deformable portion (22) of the state; and the second end (19) attached to the control rod (12), the piston (10) and the main body (9) define a variable-volume third chamber (39), whose volume changes to receive fluid from or supply fluid to the deformable portion (22).

Description

technical field [0001] The invention relates to the field of actuators for assembling hydraulic or pneumatic control devices of motor vehicles. In view of this, the present invention relates to a cylinder for a clutch control system or a brake control system of a motor vehicle. Background technique [0002] A hydraulic or pneumatic cylinder for a control device is known in the prior art, comprising a cylindrical body provided with an internal bore in which a piston is slidably housed, thereby defining a variable volume cylinder. Chambers for hydraulic or pneumatic actuators. A hydraulic or pneumatic cylinder has a control rod connected at one end to a piston and at the other end to an actuating member to control the movement of the piston. For example, in the context of a transmission control cylinder in a clutch system, such an actuating member is the clutch pedal of the vehicle. [0003] In order to limit the movement of the control rod relative to the cylindrical body,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/24
CPCF15B15/1423F15B15/24F16D13/50F16D25/08F16D48/02F16D2025/081
Inventor 吉拉姆·艾伯特克里斯多夫·莫里尔让·菲利浦·瓦赞
Owner PEZHO SITROEN AUTOMOBILS SA