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Parking mechanism for automatic transmission

A technology of automatic transmission and parking mechanism, applied in the direction of mechanical equipment, components with teeth, transmission device control, etc., can solve the problems of increased load on the parking lever, reduced strength and reliability, increased weight, etc., to shorten the distance , Improve strength reliability, and suppress elastic deformation

Inactive Publication Date: 2015-07-29
JATCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, if the amount of elastic deformation increases due to an increase in the tilt angle of the vehicle, etc., the load on the parking lever may increase and the reliability of the strength may decrease.
In addition, in order to suppress the amount of elastic deformation, it is conceivable to increase the plate thickness of the parking lever, but in this case, problems such as increased weight and increased cost arise.

Method used

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  • Parking mechanism for automatic transmission
  • Parking mechanism for automatic transmission
  • Parking mechanism for automatic transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] First, the configuration will be described.

[0042] figure 1 It is an explanatory diagram showing the parking mechanism of the automatic transmission of the first embodiment, figure 2 (a) is an explanatory diagram showing the parking gear and the parking lever of the parking mechanism of the automatic transmission of the first embodiment, figure 2 (b) is figure 2 Enlarged view of part A of (a), image 3 It is a perspective view showing a parking lever.

[0043] figure 1 The shown parking mechanism 1 of the automatic transmission is arranged in the gearbox 1 a and has: a manual lever 2 , a manual plate 3 , a lock lever 4 , a parking lever 10 , and a parking gear 20 .

[0044] The manual lever 2 is swingably attached to the transmission case 1 a, and is connected to a shift lever 6 via a selection lever 5 . And, it swings in conjunction with the driver's operation of the shift lever 6 .

[0045] The above-mentioned manual plate 3 is connected with the manual le...

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Abstract

PROBLEM TO BE SOLVED: To provide an automatic transmission parking mechanism for suppressing an elastic deformation of a parking pawl when a removing torque is applied, and thereby improving strength reliability. SOLUTION: The automatic transmission parking mechanism 1 is configured to rotate and fix a parking gear 20 when a pawl 13 installed in the parking pawl 10 is engaged or disengaged with teeth 21 of the parking gear 20. In the parking mechanism, the parking pawl 10 is adjacent to the pawl 13, and is provided with a protrusion 14 which comes into contact with the teeth 21 by the elastic deformation of the parking pawl 10. COPYRIGHT: (C)2012,JPO&INPIT

Description

technical field [0001] The invention relates to a parking mechanism of an automatic transmission, which rotates and fixes the parking gear by engaging or releasing the pawl provided on the parking lever with the teeth of the parking gear. Background technique [0002] Conventionally, there is known a parking mechanism for an automatic transmission in which a claw portion of a parking lever is engaged with and disengaged from a parking gear provided on an output shaft of an automatic transmission to rotate and stop the output shaft (for example, Refer to literature 1). [0003] In this parking mechanism, one end of the parking lever is rotatably held by a rotating shaft provided in the transmission, and the other end is detachably supported by a wedge that rotates the parking lever. [0004] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2009-236201 [0005] Usually, the teeth and claws of the parking mechanism are both involute shapes. Therefore, when the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H63/34
CPCF16H63/3433
Inventor Y.尹J.林H.胡尔J.尹
Owner JATCO LTD
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