JPH0754975A - Shift lever device - Google Patents

Abstract

PURPOSE:To prevent a rod from separating off from a shift lever device of such a structure that the rod moves upward when a push button is pushed and which is formed from the same number of component parts as any conventional shift lever device, by incorporating such a system that a cam is held by a retention groove after installation. CONSTITUTION:A shift lever device concerned comprises a cavity 14 formed in a shift knob 1, a push button 2 to be loosely fitted in the cavity 14, the first spring 3 installed in the cavity 14 and energizing the push button 2 in the first direction, a rod 4 furnished at one end with a cam 41 contacting the push button 2 and at the other end with a detent pin 42, and the second spring 5 to energize the rod 4 in the second direction which stretches approx. perpendicularly to the first direction. The cam 41 is equipped with a detention surface 41a, while the push button 2 is furnished with a retention groove 23 having a slope 22. The groove 23 holds the cam 41, and the detention surface 41a is in slide contact with the slope 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a shift lever device used in a vehicle with an automatic transmission.

[0002]

2. Description of the Related Art In this type of shift lever device, when a push button provided on a shift knob is operated, a detent pin is disengaged from a detent plate and the shift lever is released from a restrained state so that a shift change can be performed. This shift lever device has been conventionally used, for example, in the actual open sho 63-
As shown in Japanese Patent Publication No. 99920, when the push button is operated, the rod moves downward, and the detent pin comes off the detent plate. On the other hand, recently, a shift lever device having a structure in which a rod moves upward when a push button is operated has been considered, and it is necessary to change the structure of a push button, a cam provided on the rod, or the like from a conventional one. .

[0003]

However, in the shift lever device having the structure in which the rod moves upward when the push button is operated as described above, the number of parts is apt to increase in comparison with the conventional shift lever device due to its structure. There was a tendency.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and even in a shift lever device having a structure in which a rod moves upward when a push button is operated, the number of parts can be changed from the conventional shift. It is intended to be equivalent to a lever device.

The present invention, in order to achieve the above object,
A cavity formed in the shift knob, a push button loosely fitted in the cavity, and a first button provided in the cavity for urging the push button in a first direction.
A spring, a rod having a cam contacting the push button on one end side and a detent pin on the other end side, and a second spring for urging the rod in a second direction substantially orthogonal to the first direction. In the shift lever device, the shift lever is characterized in that the cam has an engagement surface, and the push button has a holding groove for holding the cam by having a slope with which the engagement surface of the cam slides. Provide a device.

[0006]

1 is a vertical sectional view of a shift lever device, FIG. 2 is a top view of a push button 2, and FIG. 3 is FIG. View A-
FIG. 4 is a perspective view of the cam 41 of the rod 4, and FIGS. 5 to 8 are main-portion cross-sectional views for explaining the assembly procedure of the shift lever device. In the figure, 1 is a shift knob, 2 is a push button, 3 is a first spring, 4 is a rod, 5
Is a second spring and 6 is a detent block,
Each configuration will be described below.

First, the shift knob 1 is a grip portion of an operator and is composed of a skeleton 11 made of a hard resin, a cover 12 made of a soft resin adhered to the skeleton 11, and a frame 13 fixed to the skeleton 11. At the same time, a cavity 14 is formed inside the skeleton 11.

The push button 2 is a portion operated by an operator during a shift change, and is loosely fitted in the cavity 14 of the shift knob 1. The push button 2 is biased in the first direction by the first spring 3 provided in the cavity 14, and has a guide groove 21 extending in the second direction, and a holding portion that is in contact with the guide groove 21 and has a slope 22. And a groove 23.
The first direction is, for example, a direction parallel to the floor of the vehicle, and the second direction is a direction substantially orthogonal to the first direction, for example, the floor direction of the vehicle.

The rod 4 operates in the second direction in response to the operation of the push button 2, has a cam 41 in contact with the push button 2 on one end side, and is constrained by a detent block 6 on the other end side. Detent pin 42 receiving
Have. Further, the cam 41 is provided with an engaging surface 41 a which is in sliding contact with the slope 22 of the holding groove 23.

Next, the assembling procedure of the embodiment having the above construction will be described with reference to FIGS. The first procedure is a procedure for inserting the push button 2 and the rod 4 into the shift knob 1, and the procedure will be described with reference to FIG. As a procedure, first, the first spring 3 and the push button 2 are pushed into the cavity 14 through the opening of the cavity 14 of the shift knob 1. Next, the rod 4 is pushed into the frame 13 through the lower opening of the frame 13. At this time, the cam 41 of the rod 4 is in a state in which the upper end portion thereof is in contact with the lower surface of the push button 2 as shown in FIG.

The second procedure is a procedure for guiding the cam 41 provided on the rod 4 into the guide groove 21 of the push button 2, which procedure will be described with reference to FIG. As a procedure, first push button 2 with arrow B
Move slowly in the direction. And cam 4 of rod 4
Search for a position where 1 enters the guide groove 21 of the push button 2. Next, when this position is confirmed, the rod 4 is pushed until it abuts in the direction of arrow C as shown in FIG. As a result, the cam 41 is guided into the guide groove 21 of the push button 2.

The third procedure is a procedure for guiding the cam 41 into the holding groove 23 of the push button 2, which procedure will be described with reference to FIG. As a procedure, after the second procedure is completed, the push button 2 is pushed in the direction of arrow D shown in FIG. This allows the cam 4
1 is guided in the holding groove 23.

The fourth procedure is a procedure for holding the cam 41 in the holding groove 23, and the procedure will be described with reference to FIG.
As a procedure, after the third procedure is completed, the pushing operation of the rod 4 is stopped. Then, the rod 4 has the second spring 5
8 is urged in the direction of arrow E, and the cam 41 is fitted into the bottom portion of the holding groove 23 as shown in FIG. As a result, the cam 41 is held by the holding groove 23, and the engagement surface 41 a contacts the slope 22.

In the shift lever device which has been assembled by the above procedure, the engaging surface 41a of the cam 41 is pushed to the slope 32 of the holding groove 23 by pushing the push button 2 in the direction of arrow F as shown in FIG. Move while sliding to. As a result, the rod 4 moves in the direction of arrow G against the elastic force of the second spring 5, and the detent pin 42 is disengaged from the detent block 6. Thus, the shift lever device is in a state where a shift change can be performed.

It should be noted that the present invention can be variously modified without departing from the scope of the invention. For example, the holding groove can hold the cam, and the shape of the embodiment can be used as long as the function of the holding groove can be substantially achieved. It is not limited to ones.

[0016]

According to the present invention, the cam of the rod has the engaging surface, the push button loosely fitted in the cavity of the shift knob has the holding groove having the slope, and the cam is held in the holding groove. The shift lever device is characterized in that the engagement surface of the cam is slidably contacted with the slope. Therefore, even if the shift lever device has a structure in which the rod moves upward when the push button is operated,
The number of parts can be made equal to that of the conventional shift lever device, and further, since the cam is held by the holding groove after assembling, the rod does not drop out of the shift lever device, and the reliability is high. .

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a shift lever device showing a preferred embodiment of the present invention.

FIG. 2 is a top view of the push button shown in FIG.

FIG. 3 is a cross-sectional view taken along the line AA of the arrow shown in FIG.

FIG. 4 is a perspective view of a cam included in the rod shown in FIG.

5 is a cross-sectional view of an essential part for explaining an assembling procedure of the shift lever device shown in FIG. 1, showing a first procedure.

6 is a cross-sectional view of a main part for explaining an assembling procedure of the shift lever device shown in FIG. 1, showing a second procedure.

7 is a cross-sectional view of a main part for explaining an assembling procedure of the shift lever device shown in FIG. 1, showing a third procedure.

8 is a cross-sectional view of an essential part for explaining a procedure for assembling the shift lever device shown in FIG. 1, showing a fourth procedure.

[Explanation of symbols]

 1 Shift Knob 2 Push Button 3 First Spring 4 Rod 5 Second Spring 14 Cavity 21 Guide Groove 22 Slope 23 Holding Groove 41 Cam 41a Engaging Surface

Claims (1)

[Claims] 1. A cavity formed in a shift knob, a push button loosely fitted in the cavity, a first spring provided in the cavity for urging the push button in a first direction, and a cam contacting the push button on one end side. A shift lever device including a rod having a detent pin on the other end side and a second spring biasing the rod in a second direction substantially orthogonal to the first direction, wherein the cam is engaged. A shift lever device, comprising: a surface, wherein the push button includes a holding groove having a slope with which an engaging surface of the cam is in sliding contact and holding the cam.