JP2588697Y2 - Shift lever device for automatic transmission - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a shift lever device for an automatic transmission of an automobile.

[0002]

2. Description of the Related Art FIGS. 4 to 6 show a conventional shift lever device of this type. 1
Is a shift lever of the automatic transmission, a vertically oriented cylinder 3 pivotally mounted on a vehicle body (not shown) having a horizontally oriented shaft 2 fixed to the rear surface of the lower end, and an upper end of the cylinder 3 And a substantially T-shaped knob 4 fixed to the knob.
A substantially horizontal guide hole 5 that opens leftward is formed in the upper part of the knob 4, and a push button 6 is fitted in the guide hole 5 so as to be able to protrude and retract. A compression coil spring 7 is contracted between the rear end surface of the guide hole 5 and the right end of the push button 6, and the push button 6 is always attached in a direction protruding from the knob 4 by the compression coil spring 7. It is being rushed. In the vicinity of the right end of the push button 6, an engagement hole 8 pointing in the up-down direction is formed. In this engagement hole 8, a roller 9 is pivotally mounted with a shaft 10 pointing in the front-rear direction. Push button 6 at both ends of shaft 10
Are supported on the side wall portions 6a before and after the engagement hole 8 in the first embodiment. At the center of the knob 4, a vertical hole 11 whose upper end communicates with the middle part of the guide hole 5 and whose lower end communicates with the upper end of the cylindrical body 3 is formed. Inclined cam (follower) 12 having a cam surface 12a inclined in the upper right direction
Are fitted so as to be slidable in the vertical direction. Cylinder 3
In the lower part of the inside, the upper inclined cam 12
The sliding body 14 coupled with the first member is slidably fitted in the vertical direction. Between a lower end of the sliding body 14 and an end plate 15 formed by bending a lower end of the cylindrical body 3 inward, a return spring 16 made of a compression coil spring is contracted,
The sliding body 14 and the rod 13
The inclined cam 12 coupled to the sliding body 14 is constantly urged upward. In the middle part of the sliding body 14, a detent pin 18 penetrating through a long hole 17 extending in the longitudinal direction formed in the lower part of both sides of the cylindrical body 3, and having both ends protruding to both sides from the cylindrical body 3. Have been. Detent pin 1
The left end of 8 is inserted through a position selection hole 20 cut out of a position plate 19 disposed on the left side of the shift lever 1. The upper edge of the position selection hole 20 has a substantially arc shape centered on the rotation center of the shift lever 1, and has a plurality of shift positions of the shift lever 1, for example, a parking position, a rear position, a neutral-drive position, a second position. Stepped engaging portions 20a, 20b, 20c, 20d, and 20e corresponding to the position, the first position, and the like are provided.

Thus, the locking means 21 for restricting the rotation of the shift lever is constituted by the inclined cam 12, the rod 13, the sliding member 14, the detent pin 18 and the like. It is urged upward to be able to stably stop at the locking position shown by the solid line in FIGS. Then, by the pushing operation of the push button 6, the roller 9 moves rightward, and the cam surface 12a of the inclined cam 12 is pushed down, so that the detent pin 18 resists the urging force of the return spring 16 as shown in FIGS. It can be moved to a release position indicated by an imaginary line in FIG. When the detent pin 18 is located at the release position, the shift lever 1 can freely rotate, and by rotating the shift lever 1 to a desired position, the detent pin 18 is moved to the position selection hole 2.
0, the engagement portions 20a, 20b, 20c, 20d,
By engaging any one of the shift levers 20e, the shift lever 1 is held at the corresponding positions as described above. In this conventional apparatus, the roller 9 is provided with the inclined cam 1.
Since the two cam surfaces 12a are rolled, there is an advantage that frictional resistance is small and operability is good as compared with a configuration in which the two inclined cams are brought into sliding contact with each other (not shown).

[0004]

In the conventional device as described above, the shift lever 1 is turned from the state where the detent pin 18 is engaged with the engaging portion 20b or 20d of the position selection hole 20. Let me detent pin 18
Is engaged with the engagement portion 20c of the position selection hole 20, the biasing force of the return spring 16 causes the cam surface 12a of the inclined cam 12 to contact the roller 9, or the detent pin 18 The contact with the engagement portion 20c of 20 causes problems such as the generation of a collision sound and the abrasion of those contact members, which hinders the improvement of durability.

The present invention has been made in consideration of the above-mentioned problems of the prior art, and has been made in consideration of the above problem. It is an object to provide a shift lever device.

[0006]

In order to achieve the above object, the present invention provides a shift lever in which a push button and a locking means for restricting rotation of the shift lever are movable in directions intersecting each other. Along with disposing, one of the push button and the locking means is provided with an inclined cam, and the other is provided with a roller that can roll along the cam surface of the inclined cam, and by a push operation of the push button, In the shift lever device of the automatic transmission, wherein the locking means can be moved in the release direction via the inclined cam and the roller, the shift button device may be configured such that the push button and the locking means
A base end of a leaf spring whose distal end is made to be able to elastically bend in the moving direction of the inclined cam is fixed to the one provided with the roller, and the roller is pivotally connected to the distal end of the leaf spring. It is characterized by being supported.

[0007]

[Function] From the state where the inclined cam and the roller are separated from each other,
When the locking means is returned from the release position to the locking position, the cam surface of the inclined cam comes into contact with the outer peripheral surface of the roller. At this time, the tip of the leaf spring supporting the roller is elastically bent in the moving direction of the inclined cam, and the impact energy at the time of abutment is absorbed, so that the collision noise is reduced and
Wear of the roller and the tilt cam is reduced, and durability is improved.

[0008]

1 to 3 show an embodiment of the present invention.
It will be described based on. In this embodiment, FIG.
The same members as those of the related art shown in FIG. 6 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, the push button 6
The inclined cams 12 are provided on the side wall portions 6a before and after the engagement hole 8 in FIG.
A long hole 22 that is long in the vertical direction, which is the direction of movement (see FIG. 3)
The provided, by fitting the ends of the shaft 10 of the roller 9 in the elongated holes 22, together with the roller 9 and its axis 10 so as be movable in the vertical direction, the engagement of the push button 6
The distal end of a leaf spring 23, which has a base end horizontally buried and fixed in the left side wall surface 8a of the hole 8 and is bifurcated back and forth, is formed of a pair of front and rear arms 23a facing right. A portion between the roller 9 and the side wall portion 6a of the push button 6 on the shaft 10 is supported by a cylindrical bearing portion 23b formed at the tip portion.

When the push button 6 is pushed in, the roller 9 rolls along the cam surface 12a of the inclined cam 12 while the distal end of the leaf spring 23 is elastically bent upward. To push down the tilt cam 12 and the sliding body 14 and the like. At this time, when the amount of elastic bending of the distal end of the leaf spring 23 reaches a certain limit, the shaft 1 of the roller 9
0 abuts against the upper end of the elongated hole 22 and the leaf spring 23
Is prevented from being elastically bent at the tip of
The tilt cam 12 can be pushed down with a strong force as in the case where the shaft 10 is fixed to the push 6.

Further, as in the case where the detent pin 18 is engaged with the engaging portion 20b or 20d of the position selection hole 20, the shift lever 1 is moved from the state where the inclined cam 12 and the roller 9 are separated from each other. Is rotated to engage the detent pin 18 with the engaging portion 20 c of the position selection hole 20, the biasing force of the return spring 16 causes the cam surface 12 a of the inclined cam 12 to contact the outer peripheral surface of the roller 9. Touch
At this time, the tip of the leaf spring 23 supporting the roller 9 elastically bends in the moving direction of the inclined cam 12 and absorbs the impact energy at the time of abutment, so that the collision sound is reduced and the roller 9 is moved. And the wear of the inclined cam 12 is reduced, and the durability is improved.

In the above-described embodiment, the base end of the leaf spring 23 is fixed to the push button 6 side.
A roller 9 is pivotally supported at the tip end of the roller 3 so that the roller 9 contacts the cam surface 12a of the inclined cam 12 provided on the locking means 21 side. Is provided, a base end of a leaf spring whose distal end is elastically bent in the moving direction of the inclined cam is fixed to the locking means 21 side, and a roller 9 is attached to the distal end of this leaf spring. , The roller 9 may be brought into contact with the cam surface of the inclined cam provided on the push button 6 side.

[0013]

As is apparent from the above description, according to the present invention, the roller contacting the cam surface of the inclined cam is provided with the tip end of the leaf spring whose tip end can be elastically bent in the moving direction of the inclined cam. When the roller and the inclined cam come into contact with each other, the tip of the leaf spring supporting the roller elastically bends in the moving direction of the inclined cam, absorbing the impact energy at the time of contact. So that the impact noise is reduced and
Wear of the roller and the tilt cam is reduced, and durability is improved.

[Brief description of the drawings]

FIG. 1 is a front view of a central longitudinal section of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a central longitudinal sectional front view showing an example of a conventional shift lever device for an automatic transmission.

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is a sectional view taken along line DD of FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 shift lever 2 shaft 3 cylinder 4 knob 5 guide hole 6 push button 6a side wall 7 compression coil spring 8 engagement hole 8a side wall 9 roller 10 shaft 11 vertical hole 12 inclined cam 12a cam surface 13 rod 14 sliding member 15 end Plate 16 Return spring 17 Long hole 18 Detent pin 19 Position plate 20 Position selection hole 20a, 20b, 20c, 20d, 20e Engagement part 21 Locking means 22 Long hole 23 Leaf spring 23a Arm 23b Bearing

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Real opening Sho 62-66320 (JP, U) Real opening Sho 63-151023 (JP, U) Real opening Sho 53-113531 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) F16H 59/00-59/12 B60K 20/00-20/08

Claims (1)

(57) [Scope of request for utility model registration] A shift button is provided within a shift lever with a push button and locking means for restricting rotation of the shift lever so as to be movable in directions intersecting with each other. On one side, an inclined cam is provided, and on the other side, a roller capable of rolling along the cam surface of the inclined cam is provided, and the pushing means of a push button releases the locking means via the inclined cam and the roller. in the shift lever device for an automatic transmission which is adapted be moved in the direction of said push button and the locking means b
The base end of a leaf spring whose distal end can be elastically bent in the moving direction of the inclined cam is fixed to the one provided with a roller, and the roller is attached to the distal end of the leaf spring. A shift lever device for an automatic transmission, which is pivotally supported.