JP2569279Y2 - 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 shift lever device for an automatic transmission, and more particularly, to a shift lever device that improves a sense of moderation when operating the shift lever.

[0002]

2. Description of the Related Art In driving a vehicle equipped with an automatic transmission, a shift range is changed by operating a shift lever. A shift lever device of an automatic transmission has a base plate fixed to a floor of a vehicle body, and a detent plate for positioning the shift lever at a plurality of positions is attached to the base plate. The shift lever has a pin that can be engaged with the detent plate, and the pin is depressed by pressing a push button provided on the top of the shift lever. Therefore, the shift lever can be shifted to each positioning portion by pressing the push button and depressing the pin to release the engagement with the detail plate.

FIG. 4 shows a shift lever device disclosed in Japanese Utility Model Laid-Open Publication No. 59-92034. As shown in FIG. 4, a detent plate 1 is provided with a detent hole 2 for engagement. A pin 4 provided on the shift lever 3 side engages with the inner peripheral surface of the detent hole 2. The detent hole 2 is a positioning hole for preventing erroneous operation of the shift lever 3,
Positioning of the shift lever 3 in the swinging direction is performed by engaging a pin-shaped engaging body 5 attached to the shift lever 3 with an uneven moderation groove 6 formed on an outer peripheral portion of the detail plate 1. It is. The engaging body 5 that engages with the moderation groove 6 is pressed against the moderation groove 6 by the spring force of the leaf spring 7. Thereby, when the engagement body 5 moves on the moderation groove 6, a moderation feeling (positioning feeling) is generated.

FIG. 5 shows a shift lever device disclosed in Japanese Utility Model Laid-Open Publication No. 60-166027. As shown in FIG. 5, a pin 14 provided on the shift lever 13 side is engaged with the engagement groove 12 of the detail plate 11. A concave-convex moderation groove 16 is formed in a portion of the detail plate 11 adjacent to the engagement groove 12. Positioning of the shift lever 13 in the swinging direction is performed by engaging a ball-shaped engaging body 15 attached to the shift lever 13 side with a moderation groove 16 of the detail plate 11. The engagement body 15 engaged with the moderation groove 16 is urged by a compression coil spring 17 so as to create a moderation feeling when the engagement body 15 moves on the moderation groove 16.

[0005]

However, the shift lever device disclosed in the above publication has the following problems. In Japanese Utility Model Laid-Open Publication No. 59-92034, the pin-shaped engaging member 5 is attached to the free end of the leaf spring 7 and is pressed against the detent groove 6, so that the deflection amount of the leaf spring varies depending on the shift position. Or the biasing direction changes.
Therefore, there is a problem that the moderating force changes depending on the position, and the operational feeling at the time of shifting deteriorates. In the case of the structure using the leaf spring 7, the stress acting on the leaf spring 7 when the shift lever 3 moves back and forth is significantly different, and the leaf spring 7 is easily damaged. In Japanese Utility Model Application Laid-Open No. 166027/1985, since the engaging body 15 is in a ball shape, the contact area with the detent groove 16 is small and the surface pressure is high, so that the engaging body 15 is difficult to rotate. Therefore, there is a problem that the usability of the shift lever is poor. In addition, the fact that the rotation of the engagement body 15 is poor and the surface pressure is high means that abrasion of the sliding contact portion between the engagement body 15 and the moderation groove 16 increases, and a problem remains in terms of durability. Furthermore, the structure in which the ball-shaped engaging body 15 is held by the rotation itself has poor assemblability and has a problem in terms of productivity.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shift lever device for an automatic transmission which can provide a good feeling of moderation during a shift operation of a shift lever and can enhance the durability of the moderation mechanism.

[0007]

A shift lever device for an automatic transmission according to the present invention which achieves this object is as follows. A body portion attached to the vehicle body and swingably supporting the shift lever; and a body held on the shift lever side,
A holder that is movable along an axis passing through a swing fulcrum of the shift lever and that is perpendicular to the shift lever and extends in a direction perpendicular to the swing direction of the shift lever; and a holder provided on the main body side. A moderation groove having a corrugated uneven surface, which is positioned parallel to the direction of swing of the shift lever with the shift lever interposed therebetween, and rotatably fitted to the holder;
One end is connected to the roller that comes into contact with the uneven surface of the moderation groove and the shift lever, and the other end is connected to the holder. The holder is pulled upward to press the roller against the uneven surface. A shift lever device for an automatic transmission.

[0008]

In the shift lever device of the automatic transmission according to the present invention, since the holder is located on the axis passing through the swing fulcrum of the shift lever, the holder moves around the swing fulcrum when shifting the shift lever. However, even if the shift position changes, the force for urging the rollers by the urging means is always constant. Therefore, there is no change in the moderation force during the shift as compared with the conventional device, and a good moderation feeling can be obtained.
Since the roller comes into contact with the concave and convex surface of the moderation groove, the contact area between the roller and the concave and convex surface can be made larger than that of the ball, and the rotation of the roller at the time of the shift operation is improved, thereby improving the usability. Since the uneven surface is located at both ends in the axial direction of the holder, an increase in the contact area between the roller and the uneven surface reduces the surface pressure of the contact portion, thereby suppressing the wear of the contact portion to a small degree, The durability of the mechanism is improved. Since the urging means has a function of pulling the holder upward, space saving can be achieved as compared with a case where an urging means utilizing a compressive force such as a compression coil spring is used. In other words, in the case of a biasing means using a compression force such as a compression coil spring, the spring buckles at the time of compression, so a guide for preventing buckling is required. However, this guide is unnecessary, and the space can be saved accordingly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a shift lever device for an automatic transmission according to the present invention will be described below with reference to the drawings. First Embodiment FIGS. 1 and 2 show a first embodiment of the present invention.
In the figure, the upper part of a detent plate 22 as a main body attached to the vehicle body is covered by a housing (not shown). The housing is a shift lever 23
Has an indicator (not shown) for displaying the shift position. The lower end of the shift lever 23 is swingably connected to the detent plate 22 via a fulcrum shaft 31. A detent groove (not shown) is formed in the detent plate 22. As shown in FIG. 2, the shift lever 23 is provided with an engagement pin 26 that can be engaged with the detent groove so as to be movable. The engagement pin 26 is interlocked with the movement of a push button (not shown) provided on the top of the shift lever 23 via a rod (not shown) disposed in the shift lever 23.

[0010] Brackets 51 and 52 are swingably connected to the fulcrum shaft 31 below the shift lever 23. The brackets 51 and 52 are formed with elongated holes 51a and 52a extending in the axial direction, respectively. Slot 51
a and 52a are respectively formed. Slots 51a, 5
2a is located on the axis S passing through the pivot point of the shift lever 23. Long holes 51a, 5 of brackets 51, 52
One cylindrical holder 53 is inserted through 2a.
The axial length of the holder 53 is substantially equal to the diameter of the shift lever 23.

A detent groove 40 is formed in the detent plate 22 so as to sandwich the shift lever 23 and to be parallel to the swinging direction of the shift lever 23. Above each moderation groove 40, a corrugated surface 40a is formed in a wavy shape corresponding to each position during the shift operation. A roller 5 having both ends in contact with the uneven surface 40 a of the moderation groove 40 is provided on the holder 53.
4 are rotatably fitted. A connecting portion 51b bent in the horizontal direction is formed on an upper portion of the bracket 51 located above the holder 53. Connecting part 51b
A tension coil spring 55 as an urging means is disposed between the holder and the holder 53.

The upper end of the tension coil spring 55
It is hooked on the connecting portion 51b of the bracket 51. The lower end of the tension coil spring 55 is hooked on the central portion of the holder 53 in the axial direction. As a result, the holder 53 is pulled upward by the spring force of the extension coil spring 55, and both ends of the roller 54 held by the holder 53 are pressed against the uneven surface 40 a of each moderation groove 40. As described above, in the present embodiment, the roller 54 has a support structure at both ends.

Next, the operation of the first embodiment will be described. When changing the shift position of the shift lever 23 during operation of the vehicle, a push button (not shown) provided on the head of the shift lever 23 is pressed, and this pressing force is applied to the engaging pin 26 via a rod. The engagement pin 26 and the detent groove are released by the downward movement of the engagement pin 26 being transmitted. In the state where the engagement between the engagement pin 26 and the detent groove is released, the shift lever 23 is held at the position where the engagement is released because the roller 54 is pressed against the uneven surface 40 a of the moderation groove 40. .

In a state where the engagement between the engagement pin 26 and the detent groove is released, the driver of the vehicle operates the shift lever 2.
When the gear 3 is shifted, the roller 54 moves to a predetermined position while rolling on the uneven surface 40a of the moderation groove 40. Here, since the holder 53 and the roller 54 are arranged on the axis S passing through the swing fulcrum P of the shift lever 23, the roller 54 moves around the swing fulcrum P, and the roller 54 is pulled by the tension coil. The force biased by the spring 55 is always constant. Therefore, there is no change in the moderation force during the shift, and a good moderation feeling (positioning feeling) can be obtained.

Further, since the roller 54 is pressed against the uneven surface 40a, the roller 54 and the uneven surface 40a are
Large contact area can be secured. Therefore, the rotation of the roller 36 during the shift operation is improved as compared with the ball engaging body of the conventional device, and the usability during the shift operation is improved. Since the concave and convex surfaces 40a that are in contact with the rollers 54 are located at both ends in the axial direction of the holder 53,
The contact area between the roller 54 and the uneven surface 40a is sufficiently increased,
Wear at the contact portion between the roller 54 and the uneven surface 40a is also suppressed to a small level. In addition, since the roller 54 has a support structure at both ends, rigidity against bending can be increased. The moderation groove 4
When the member pressed to 0 is a ball, the structure for rotatably holding the ball is relatively complicated and the assemblability deteriorates, but the roller 54 is held by the holder 53 as in this embodiment. The work is easy, and the efficiency of the assembling work can be improved.

In this embodiment, the holder 5 is used as the urging means.
Since the tension coil spring 55 that pulls up the spring 3 is used, it is not necessary to consider the buckling of the spring at the time of compression as compared with the case where the compression coil spring is used. Therefore, a member for preventing deformation of the compression coil spring is not required, and a space for the deformation is not required. Thereby, downsizing of the shift lever device is achieved.

Second Embodiment FIG. 3 shows a second embodiment of the present invention. The second embodiment is different from the first embodiment only in the configuration of the roller and the holder, and the other parts are the same as those in the first embodiment. Therefore, the corresponding description will be omitted, and only different portions will be described. In the second embodiment, the holder 61 is formed in a cylindrical shape, and the roller 62 is formed in a cylindrical shape. Holder 61
Both ends project from the shift lever 23, and rollers 62 are rotatably fitted to both ends of the holder 61, respectively. In the second embodiment, at the time of the shift operation of the shift lever 23, the roller 62 rolls on the uneven surface 40a, so that the abrasion due to the contact with the detent groove 40 is suppressed to a small level. Further, as in the first embodiment, since the holder 61 has a support structure at both ends, the rigidity of the holder 61 against bending is increased. Other operations are the same as in the first embodiment.

[0018]

According to the shift lever device of the automatic transmission according to the present invention, a holder movable on the shift lever side along an axis passing through the swing fulcrum of the shift lever is held.
The roller is rotatably fitted to the holder, and the roller is pressed against the corrugated uneven surface of the detent groove located in parallel with the direction of swing of the shift lever by sandwiching the shift lever. And the contact area between the groove and the concave and convex surface of the moderation groove can be increased. Therefore, a good tactile sensation can be obtained when the shift lever is operated due to the smooth rotation of the roller, and the durability of the moderation mechanism can be increased by reducing abrasion of the contact portion between the uneven surface and the roller. In addition, since the roller is rotatably fitted to the holder, assembling work becomes easier and productivity can be improved as compared with a conventional device in which a ball-shaped engaging member is pressed against the moderation groove. Since the urging means functions to pull the holder upward and press the roller against the uneven surface, it is not necessary to consider the buckling of the spring as in the case of the compression coil spring, and the space can be saved accordingly. As a result, the size of the shift lever device can be further reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a shift lever device of an automatic transmission according to a first embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view showing a main part of a shift lever device of the automatic transmission according to a second embodiment of the present invention.

FIG. 4 is a front view of a main part of a shift lever device of the automatic transmission disclosed in Japanese Utility Model Laid-Open No. 59-92034.

FIG. 5 is a front view of a main part of a shift lever device of an automatic transmission disclosed in Japanese Utility Model Laid-Open Publication No. 60-166027.

[Explanation of symbols]

 Reference Signs List 22 detent plate 23 as main body 23 shift lever 40 moderation groove 40a uneven surface 53 holder 54 roller 55 biasing means (tension coil spring) 61 holder 62 roller P swing fulcrum S axis passing through swing fulcrum

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body mounted on a vehicle body side for swingably supporting a shift lever; and a main body held on the shift lever side and movable along an axis passing through a swing fulcrum of the shift lever. A single holder that is perpendicular to the shift lever and extends in a direction perpendicular to the direction in which the shift lever swings, provided on the main body side, and sandwiching the shift lever and positioned parallel to the direction in which the shift lever swings A moderation groove portion having a corrugated uneven surface, a roller rotatably fitted to the holder and contacting the uneven surface of the moderation groove portion, and one end connected to the shift lever, and another to the holder. And a biasing means having an end connected thereto and for pulling the holder upward to press the roller against the uneven surface.