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Setting device for actuating a selector rod of a transmission

A technology of setting device and selector rod, which is applied in the direction of fluid pressure actuating device, transmission device control, mechanical equipment, etc., can solve problems caused by axial play, increase flexibility, avoid dead travel or The effect of energy loss and wear minimization

Active Publication Date: 2019-04-23
FTE AUTOMOTIVE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this axial play poses problems, especially if the stroke of the selector piston has to be detected as precisely as possible for transmission control purposes

Method used

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  • Setting device for actuating a selector rod of a transmission
  • Setting device for actuating a selector rod of a transmission
  • Setting device for actuating a selector rod of a transmission

Examples

Experimental program
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Effect test

Embodiment Construction

[0033] In the figures, reference numeral 10 generally designates hydraulic setting means for the actuation (ie in this case axial displacement) of the selector lever 12 of the transmission, for which in figure 1 In , in addition to the selector lever 12, a transmission housing 13 is shown. The setting device 10 has a cylinder housing 14 which can be mounted in or on the transmission, more precisely on its transmission housing 13, and in which a selector piston 16 is received for possible Move vertically. The selector piston 16 has a plastic piston base body 18 and in the illustrated embodiment divides and delimits the cylinder housing 14 into two working chambers 20 and 22 which can optionally be pressurized. In this case, the selector piston 16 is provided with a recess 26 extending along the longitudinal axis 24 of the selector piston 16 for receiving the end 28 of the selector rod 12 and passing it through a tightening screw with a screw head 32 . A set screw 30 is mounte...

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Abstract

A setting device (10) for actuating a transmission selector rod (12) of a transmission has a cylinder housing (14) arranged in or on the transmission. A selector piston (16) is received in the cylinder housing (14) to move vertically, defines at least one working chamber (20, 22) selectively loaded with pressure, and has a base body (18) of plastics material. The selector piston is provided with arecess (26) extending along a longitudinal axis (24) for reception of an end (28) of the selector rod and is mounted on the end of the selector rod by a securing screw (30) with a screw head (32). Awasher (34) protruding transversely to the longitudinal axis into the recess is embedded in the plastics material of the base body to be connected in a shape fitting manner, along the longitudinal axis, a first support surface (36) for the screw head is formed on a front side, and a second support surface (38) for the end of the selector rod is formed on a rear side. Therefore, the selector pistonis connected to the selector rod in a play-free manner via the washer through the securing screw.

Description

technical field [0001] The invention relates to a setting device for actuating a selector lever of a transmission according to the preamble of claim 1 . In particular, the invention relates to a hydraulic setting device for actuating a selector lever of a transmission for a motor vehicle, such as is used on a large scale in the automotive industry, such as an automatic mechanical transmission. Such a setting device is used for the purpose of eg actuating, ie moving and optionally positioning a selector fork for gear shifting, which is fixed to the selector lever of the transmission. Background technique [0002] Document DE 10 2006 030 450 A1 discloses a hydraulic setting device for actuating a selector lever of a motor vehicle transmission, the device having a cylinder chamber arranged in or at the transmission housing for Receives a selector piston, which is operatively connected to the selector rod and which divides the cylinder space into two working chambers which are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H63/30F16H61/26
CPCF16H61/26F16H63/30F16H61/30F16H63/065F16H63/3023F16H2063/3079F15B15/1447F15B15/2861F16H59/70
Inventor R·伯格K·海德S·格伯特
Owner FTE AUTOMOTIVE GMBH & CO KG
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