Apparatus for preventing mal-operation for automatic transmission

Patent metadata

Field	Value
Publication number	US-10557548-B2
Application number	US-201615780961-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Dec 1, 2015
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

An apparatus for preventing mal-operation for an automatic transmission, which is formed as one body including a plurality of parts, is provided, whereby it is possible to simplify the structure and the manufacturing process thereof.

First claim

The invention claimed is:

1. An apparatus for preventing mal-operation for an automatic transmission, comprising:
a stopper which restricts a pawl provided in a gear lever from moving to a lower gear when shifting the gear lever from P or R to D;
a body having a stopper support to support an other side surface of the stopper which restricts the pawl from moving to a lower gear when shifting the gear lever from P or R to D;
a stopper neck which is elastic and connects the stopper to the body; and
a body spring protruding from a bottom of the body to elastically support the body moving down as the pawl presses down an upper part of the stopper, when shifting the gear lever from D to a lower gear,
wherein the stopper, the stopper neck, the body, the stopper support and the body spring are integrally formed.

2. The apparatus for preventing mal-operation for an automatic transmission according to claim 1 , further comprising:
a first connector and a second connector connecting the apparatus for preventing mal-operation for an automatic transmission to a housing having a detent,
wherein the first connector and the second connector are integrally formed in the body.

3. The apparatus for preventing mal-operation for an automatic transmission according to claim 2 , wherein during shifting the gear lever from D to a lower gear, the first connector and the second connector guide the body upward and downward, wherein when the pawl presses down the upper part of the stopper, the body moves down by an elastic force of the body spring, and when the pawl pressing down the upper part of stopper moves up, the body returns to an original location by elastic force restoration of the body spring.

4. The apparatus for preventing mal-operation for an automatic transmission according to claim 1 , wherein the stopper and the stopper support are spaced apart at a predetermined distance.

5. The apparatus for preventing mal-operation for an automatic transmission according to claim 1 , wherein during shifting the gear lever from P or R to D, when the pawl presses one side surface of the stopper, the stopper neck moves the stopper back by an elastic force until the stopper is supported on the stopper support, and
when the pawl of which movement to a lower gear is restricted by the stopper moves up, the stopper neck allows the stopper to return to an original location by elastic force restoration.

6. The apparatus for preventing mal-operation for an automatic transmission according to claim 1 , which comprises a plurality of body springs.

7. The apparatus for preventing mal-operation for an automatic transmission according to claim 6 , wherein the plurality of body spring are formed in a semi-ring shape.

8. The apparatus for preventing mal-operation for an automatic transmission according to claim 1 , wherein the body spring is formed in a semi-ring shape.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Ahn Kyuhwan
• Rhew Choonghee

Classifications

• F16H61/18 Primary

  Preventing unintentional or unsafe shift {, e.g. preventing manual shift from highest gear to reverse gear} · CPC title

• G05G1/04

  Controlling members for hand actuation by pivoting movement, e.g. levers · CPC title

• F16H59/10

  comprising levers · CPC title

• G05G5/02

  Means preventing undesired movements of a controlling member which can be moved in two or more separate steps or ways, e.g. restricting to a stepwise movement or to a particular sequence of movements (G05G5/28 takes precedence) · CPC title

• G05G5/00

  Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member (G05G17/00 takes precedence) · CPC title