JP3108005B2 - Shift lever device for automatic transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce generation of a hammering sound due to contact of a detent rod and a knob button without providing a new member. SOLUTION: It is a shift lever device for an automatic transmission provided with a knob button 23 on a knob 16a of a shift lever 16 free to move, provided with a detent rod 24 to be pushed down by pressure of the knob button 23 on the shift lever 16 and provided with an energizing means 27 to energize the detent rod 24 in the pushing up direction, and a cushioning part 19a to be elastically deformed by contact with the detent rod 24 integrally molded with a soft resin part 19 and to be energized by an energizing means 27 is formed on the soft resin part 19 constituting an outer peripheral part of the knob 16a of the shift lever 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lever device for an automatic transmission of a motor vehicle, and more particularly to a structure of a shift lever device for an automatic transmission for reducing a tapping sound caused by a detent rod interlocking with a shift button.

[0002]

2. Description of the Related Art In an automobile equipped with an automatic transmission, a shift operation of a shift lever is performed by pressing a shift button provided on a knob to release the engagement between the detent pin and the detent portion by depressing the detent pin. Becomes possible. 9 to 12 show an example of a conventional shift lever device. In FIG. 9, reference numeral 1 denotes a base plate. A shift lever 2 is swingably supported by the base plate 1. The shift lever 2 is provided with a knob button 3 movably in the horizontal direction. The shift lever 2 is provided with a detent rod 4 that can move in conjunction with the knob button 3 so as to be vertically movable. The detent rod 4 is provided with a detent pin 5. Base plate 1 has detent pins 5
Is formed with a detent part 6 with which the can be engaged. The detent rod 4 is urged upward by a spring 7. The knob button 3 is urged outward by a spring 8.

In order to shift the shift lever 2 to another range, first, the knob button 3 is pressed, and the detent rod 4 is pressed.
The detent pin 5 is pushed down through. This allows
The engagement between the step portion of the detent portion 6 and the detent pin 5 is released, and the shift operation of the shift lever 2 to another range becomes possible. However, the knob button 3 must be pressed only in the range P → R, P ← R, N → R, 2 → L. When shifting to another range, the detent section shown in FIG. Knob button 3 because of the shape of 6
The shift operation can be performed without pressing.

[0004]

However, the apparatus shown in FIGS. 9 to 12 has the following problems. When the shift lever 2 is in the R or L range, the detent pin 5
Is depressed by contact with the detent part 6,
The cam 3a of the knob button 3 and the upper end inclined surface 4a of the detent rod 4 are not in contact as shown in FIG.
In this state, if the shift operation is performed from the R and L ranges to N and 2 without pressing the knob button 3, the detent pin 5 comes off the step of the detent section 6, and the detent rod 4 is moved.
Is rapidly pushed upward by the spring 7, and the upper inclined surface 4 a of the detent rod 4 abuts on the cam portion 3 a of the knob button 3. Therefore, a striking sound is generated, and the quality of the shift lever device is impaired by the occurrence of the striking sound. In order to suppress the occurrence of a tapping sound, a cushion member may be provided at a portion where the knob button 3 and the detent rod 4 abut, but since this portion is also a sliding portion between the knob button 3 and the detent rod 4, it is newly added. When the cushion member is provided, the operation feeling deteriorates due to the wear of the cushion member, and the knob is pressed when the knob button is pressed. It is anticipated that there is a possibility that the error may occur. Further, when a cushion member is newly provided, the number of assembling steps is increased, and there is a problem that the cost is increased.

It is an object of the present invention to provide a shift lever device for an automatic transmission which can reduce the occurrence of a tapping sound due to the contact between a detent rod and a knob button without providing a new member. .

[0006]

A shift lever device for an automatic transmission according to the present invention which achieves the above object is as follows. The knob shea shift lever, movable the knob button, the shift lever, provided with a detent rod is pushed down by the pressing of the knob button, automatic transmission provided with a biasing means for biasing in a direction pushing up the detent rod A shift lever device, wherein a soft resin portion forming an outer peripheral portion of a knob of the shift lever includes:
A buffer portion is formed integrally with the soft resin portion and elastically deforms by contact with a detent rod urged by the urging means, and attached to the detent rod outside the knob by another urging means. A shift lever device for an automatic transmission, comprising a buffering inclined surface that pushes up the detent rod by contact with the knob button that is urged.

[0007] In the above SL shift lever device for an automatic transmission of, the detent rod is pushed by the biasing means when the shift operation, the detent rod contacts the buffer portion, the buffer portion is elastically deformed by contact with the detent rod I do. Therefore, the impact when the detent rod comes into contact with the knob button is reduced, and the hitting sound can be reduced. Also,
Since the buffer portion is formed integrally with the soft resin portion forming the outer peripheral portion of the knob, no new member is required. In addition, since the urging force of the knob button by another urging means is converted into a force for urging the detent rod upward by the cushioning inclined surface, even if the knob button is released with the knob button fully depressed, the cushioning portion is not moved. It is elastically deformed by the contact with the detent rod. Therefore, it is possible to reduce the hitting sound due to the contact between the knob button and the detent rod when the knob button is released.

[0008]

1 to 4 show a first embodiment of the present invention, FIGS. 5 and 6 show a second embodiment of the present invention, and FIGS. 7 and 8 show a third embodiment of the present invention. An example is shown. First, a configuration common to all embodiments will be described with reference to, for example, FIG. Constituent parts common to the respective embodiments are denoted by the same reference numerals.

In FIG. 1, reference numeral 11 denotes a base plate. A shift lever 16 is swingably supported by the base plate 11. The shift lever 16 has a metal pipe 17 extending vertically. A holder 18 made of a synthetic resin is provided on the outer periphery of the upper part of the metal pipe 17. A soft resin portion 19 is provided around the outer periphery of the holder 18.
Is located. The soft resin portion 19 is connected to the shift lever 16.
Of the outer periphery of the knob 16a (grip portion) of
A material having a soft feeling is used to improve the tactile sensation. The holder 18 of the shift lever 16 has a knob button 2
3 is provided movably in the horizontal direction. Inside the metal pipe 17 of the shift lever 16, a detent rod 24 operable in conjunction with the knob button 23 is provided movably in the vertical direction. The upper end of the detent rod 24
The knob button 23 is formed on an inclined surface 24a that comes into contact with the cam 23a. The detent rod 24 is provided with a detent pin 25. A detent portion 26 with which a detent pin 25 can be engaged is provided on the base plate 11.
Are formed. The detent rod 24 is urged upward by the urging means 27. The urging means 27
For example, it is composed of a spring. Knob button 2
3 is another urging means 28 arranged on the upper part of the holder 18.
Is biased outward by The biasing means 28 is formed of, for example, a spring.

Next, the operation common to the embodiments will be described. When shifting the shift lever 16 from the P range to the R range, the knob button 23 is pressed and the detent pin 25 is pressed down. Thus, the engagement between the detent pin 25 and the step 26a of the detent portion 26 is released, and the shift lever 16 can be shifted from the P range to the R range. In this state, the detent pin 25 comes into contact with another step 26b of the detent portion 26, so that the detent rod 24 remains depressed, and the inclined surface 24a of the detent rod 24
Do not touch a. Shift lever 16 from R range to N
When shifting to the range, the shift lever 16 is swung toward the N range without pressing the shift button 23. Thereby, the detent pin 25 and the detent section 2
6 is released from contact with another step 26b, and the shift lever 16 can be shifted from the R range to the N range. Therefore, the detent rod 24 is
7, the inclined surface 24a of the detent rod 24 comes into contact with the cam 23a.

Next, a specific configuration of each embodiment will be described. In the first embodiment, as shown in FIGS. 1 to 4, an upper end of the detent rod 24 is provided with a contact portion 24b projecting upward. The contact portion 24b is formed integrally with the detent rod 24. Contact part 24
A buffer portion 19a is formed at a position facing the end surface of b. The buffer portion 19a is formed integrally with the soft resin portion 19 that forms the outer peripheral portion of the knob of the shift lever 16. The buffer portion 19a is formed by melting the molten soft resin into the holder 18.
This is performed by wrapping around the inside of the holder 18 via the through hole 18a formed in the hole. The buffer portion 19a can be elastically deformed by contact with the contact portion 24b by pushing up the detent rod 24 by the urging means 27. When the contact portion 24b is in contact with the buffer portion 19a, the inclined surface 24a of the detent rod 24 and the cam 23a
It is desirable that there is a slight gap between them.

In the second embodiment, as shown in FIGS. 5 and 6, immediately below the inclined surface 24a of the detent rod 24, a contact portion 24b projecting right and left is formed. A buffer 19b is formed at a position facing the upper surface of the contact portion 24b. The buffer portion 19b is formed integrally with the soft resin portion 19 forming the outer peripheral portion of the knob of the shift lever 16. The formation of the buffer 19b is performed by causing the molten soft resin to go around the inside of the holder 18 through the through hole 18b formed in the holder 18. Buffer 19b
Is elastically deformable by contact with the contact portion 24b by pushing up the detent rod 24 by the urging means 27. When the contact portion 24b is in contact with the buffer portion 19b, the inclined surface 24a of the detent rod 24 and the cam 2
It is desirable that there is a slight gap between the gap 3a.

In the third embodiment, as shown in FIGS. 7 and 8, an upper end of the detent rod 24 is provided with a contact portion 24b projecting upward. The contact portion 24b is
It is formed integrally with the detent rod 24. Contact part 2
A buffer 19a is formed at a position facing the end face of 4b. Since the relationship between the contact portion 24b and the buffer portion 19a is the same as in the first embodiment, a description thereof will be omitted. On one side of the upper end of the detent rod 24,
A concave recess 24d is formed on the side of the inclined surface 24a. At a position facing the inclined surface 24a of the concave portion 24d, a buffering inclined surface 24e extending obliquely upward is formed.
A convex portion 23b is formed at a position of the knob button 23 facing the cushioning inclined surface 24e. The convex portion 23b is pressed against the cushioning inclined surface 24e by another urging means 28 disposed on the upper portion of the holder 18. The protruding portion 23b contacts the detent rod 24e by contact with the cushioning inclined surface 24e.
Has the function of pushing upward.

Next, the operation of each embodiment will be described. In the first embodiment, when the shift lever 16 is in the R range, the detent pin 25 and the detent
Of the detent rod 24 by contact with the step 26b of the
Is depressed, and the inclined surface 24a of the detent rod 24 is, as shown in FIG.
It is far away from a. When the shift lever 16 is shifted from the R range to the N range, the detent pin 2
The contact between the step 5 and the step 26b is released, and the detent rod 24 is rapidly pushed up by the urging means 27.
When the detent rod 24 is pushed up, the contact portion 24b abuts on the buffer portion 19a and the buffer portion 19a is elastically deformed. Sound generation is reduced.

In the second embodiment, when the shift lever 16 is shifted from the R range to the N range, the detent rod 24 is rapidly pushed up by the urging means 27. When the detent rod 24 is pushed up, the contact portion 24b comes into contact with the buffer portion 19b, and the buffer portion 19b is elastically deformed, so that the shock caused by the contact between the contact portion 24b and the buffer portion 19b is absorbed, The occurrence of hitting sound is reduced.

In the third embodiment, when the shift lever 16 is shifted from the R range to the N range, the detent rod 24 is pushed up by the urging means 27. When the detent rod 24 is pushed up, the contact portion 24
Since b contacts the buffer portion 19a and the buffer portion 19a is elastically deformed, the shock when the contact portion 24b collides with the buffer portion 19a is absorbed, and the generation of a tapping sound due to the contact of the contact portion 24b is reduced. Also, the detent rod 24 has
Since the cushioning inclined surface 24e is provided, another urging means 2 is provided.
8, the detent rod 24 is pushed up by the movement of the knob button 23, and the detent rod 24 comes into contact with the buffer 19a. In the third embodiment, another urging means 28
A part of the urging force F of the knob button 23 is converted into a force for urging the detent rod 24 upward. Therefore, even when the knob button 23 and the detent rod 24 come into contact with each other, the cushioning portion 19a contacts the detent rod 24. It is elastically deformed by contact. Therefore, the shock when the knob button 23 comes into contact with the detent rod 24 is also reduced by the buffer 19a, and the knob button 23 and the detent rod 2
The hitting sound due to the contact with No. 4 is reduced.

[0017]

According to the shift lever device for an automatic transmission of 請 Motomeko 1 according to the present invention, the soft resin portion constituting the outer peripheral portion of the knob of the shift lever, the contact between the detent rod is biased by a biasing means Since a buffer part that elastically deforms is formed,
Even when the detent rod is pushed up by the urging means during the shift operation, the shock when the detent rod and the knob button come into contact with each other can be reduced by the elastic deformation of the buffer portion, and the hitting sound can be reduced. Further, since the buffer portion is formed integrally with the soft resin portion forming the outer peripheral portion of the knob, no new member is required. In addition, since the detent rod is provided with a cushioning inclined surface with which the knob button urged by another urging means comes into contact, a part of the urging force of the knob button can be converted into a force for pushing up the detent rod, and the shock absorbing buffer can be converted. The portion is elastically deformed by contact with the detent rod. Therefore, even when the knob button is released with the knob button pressed down to the full stroke, the impact due to the contact of the knob button with the detent rod is reduced, and the hitting sound can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view showing a shift lever device for an automatic transmission according to a first embodiment of the present invention, showing a state where the shift lever is shifted to one of N, D, and two ranges.

FIG. 2 is a partially enlarged cross-sectional view showing the shift lever device for the automatic transmission of FIG. 1, showing a state where the shift lever is shifted to one of an R range and an L range.

FIG. 3 is an overall sectional view of the shift lever device for the automatic transmission of FIG. 1;

FIG. 4 is a cross-sectional view showing an engagement state between a detent pin and a detent part in FIG. 3;

FIG. 5 is a partially enlarged cross-sectional view showing a shift lever device for an automatic transmission according to a second embodiment of the present invention, showing a state where the shift lever is shifted to any of P, N, D, and 2 ranges. is there.

FIG. 6 is a cross-sectional view of FIG. 5 viewed from another direction.

FIG. 7 is a shift lever device for an automatic transmission according to a third embodiment of the present invention, in which a knob button is depressed in a state where the shift lever is shifted to any of P, N, D, and 2 ranges. It is a partial expanded sectional view shown.

8 is a partially enlarged cross-sectional view showing movement of each part when a knob button is released from the state of FIG. 7;

FIG. 9 is a sectional view of a conventional shift lever device for an automatic transmission.

FIG. 10 is a cross-sectional view of the shift lever device for the automatic transmission of FIG. 9 as viewed from another direction.

11 is a partially enlarged cross-sectional view showing the shift lever device for the automatic transmission of FIG. 9, showing a state where the shift lever is shifted to P, N, D, and two ranges.

12 is a partially enlarged cross-sectional view showing the shift lever device for the automatic transmission of FIG. 9, showing a state where the shift lever is shifted to the R and L ranges.

[Explanation of symbols]

 Reference Signs List 16 shift lever 16a knob 19 soft resin part 19a buffer part 23 knob button 24 detent rod 24e buffer inclined surface 25 detent pin 26 detent part 27 urging means 28 different urging means

Claims (1)

(57) [Claims] 1. A knob of a shift lever is provided with a knob button movably, a detent rod is provided on the shift lever which is depressed by pressing the knob button, and an urging means for urging the detent rod in a push-up direction is provided. A shift lever device for an automatic transmission, comprising: a soft resin portion forming an outer peripheral portion of a knob of the shift lever; and a detent rod integrally formed with the soft resin portion and biased by the biasing means. A buffer portion that is elastically deformed by contact is formed, and the detent rod is provided with a buffer inclined surface that pushes up the detent rod by contact with the knob button that is biased outward from the knob by another biasing means. A shift lever device for an automatic transmission.