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Vehicle park lock assembly

An assembly and parking technology, applied to components with teeth, transmission control, belt/chain/gear, etc., to achieve the effect of reducing size and cost

Inactive Publication Date: 2014-05-14
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This force requires a large servo to accomplish

Method used

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  • Vehicle park lock assembly
  • Vehicle park lock assembly
  • Vehicle park lock assembly

Examples

Experimental program
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Embodiment Construction

[0014] figure 1 Components of a park assembly 10 are shown, suitable for use with a vehicle of the type having a park gear 12 and a shifter (not shown) for selecting the operating range of an automatic transmission, the transmission output shaft being connected to The axis 15 is aligned and secured to the park gear 12 .

[0015] The park gear 12 includes a number of circumferentially disposed and substantially identical teeth or protrusions 16 . Each tooth 16 is separated by a recess or recess 18 . Park pawl 20 including teeth 22 pivots about axis 24 to engage park gear 12 to substantially prevent rotation of park gear 12 and the output shaft. When pawl 20 is disengaged from park gear 12 , the output shaft is free to rotate about axis 25 .

[0016] The shifter can be operatively and selectively moved between several positions, such as a "park" position, a "reverse" position, a "neutral" position, and a "drive" position, which respectively correspond to different operations ...

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PUM

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Abstract

A park assembly includes a park gear, a pawl that engages and disengages the park gear, a park rod that causes the pawl to engage with the park gear and to disengage from the park gear, a servo, and a bellcrank transmitting a first force to the park rod causes the pawl to disengage from the park gear in response to a second force substantially greater than the first force and produced by the servo.

Description

technical field [0001] The present invention relates to a parking brake mechanism for an automatic transmission, and more particularly, to a parking mechanism driven by a servo to alternately engage and disengage a parking gear of a vehicle. Background technique [0002] A parking mechanism or assembly is used in a motor vehicle to allow the vehicle to enter and maintain a "parked" condition or condition. Park assemblies typically include a park link or cam that selectively actuates a park pawl that operably engages the vehicle's park gear to maintain the vehicle in a "park" position or condition. [0003] The park linkage is typically mechanically connected to the vehicle shifter and moves in response to movement of the shifter. When the shifter is moved to the "Park" position, the park link engages the park pawl, and the park pawl pivots or rotates into a position between a pair of teeth on the park gear, thereby essentially stop the park gear and output shaft from furth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H63/34
CPCF16H63/3416
Inventor 布拉德利·R·赫乌维尔
Owner FORD GLOBAL TECH LLC
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