JP2595899Y2 - Remote control structure of vehicle transmission - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION In the present invention, a shift lever is operated via a select shaft which is turned by a power shift device for reducing a shift force and is moved in an axial direction. The present invention relates to a remote control structure for a vehicle, which is disposed such that an end of a select shaft comes into contact with a spring receiving seat urged by a spring when moved in an axial direction.

[0002]

2. Description of the Related Art A remote control structure of a conventional vehicle transmission will be described with reference to FIGS. In these figures, a case 20 is attached to a transmission case (not shown), and a hollow shift shaft 21 and a solid shaft select shaft 23 spline-fitted to the shift shaft 21 extend horizontally in the case 20. Are rotatably supported by a needle bearing 25 and a bush 32, respectively. The movement of the power shift device 5 in a direction perpendicular to the paper surface causes the lever 4 to rotate the shift shaft 21. The select shaft 23 has a pin 30
The shift lever 22 is fixed by the
The rotation of the shift lever 2 via the select shaft 32
2 are driven. On the other hand, when the rotation shaft 36 rotates, the shift lever 22 is moved by the select lever 37 along the axial direction of the select shaft 23. For example, when the shift lever 22 moves leftward in FIG.
The select shaft 23, which is substantially integral with the shaft, moves to the left so that the small-diameter portion 38 at the tip passes through the hole 39 of the washer 34, and the step portion 40 pushes the washer 34 to compress the spring 33. When the shift lever 22 moves rightward in the figure, the spring 26 built in the shift shaft 21 is compressed in the same manner.

[0003]

However, in the above-described conventional remote control structure for a vehicle transmission, when the select shaft 23 enters or comes into contact with the washer 34 or 35, the outer peripheral surface of the select shaft 23 and the washer 34 are disengaged.
Alternatively, there is a problem that a frictional force is generated by sliding between the holes and the holes 39 or 41, or the holes are stuck, resulting in poor operation feeling.

Japanese Unexamined Utility Model Publication No. 3-117156 filed by the present applicant discloses a technique for controlling the output of a power shift by providing a shift operation force detecting means. There are disclosed techniques for bringing the tip of the shaft into point contact with the transmission case, but none of them can solve the above problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide a remote control structure for a vehicle transmission having a good operation feeling.

[0006]

According to the present invention, a shift lever is operated via a select shaft which is rotated by a power shift device and is moved in an axial direction, and the select shaft is moved in an axial direction. A remote control structure for a vehicle, wherein the end of the select shaft is disposed so that the end of the select shaft abuts on a spring receiving seat biased by a spring when moved, the end of the select shaft has a tapered portion and a small diameter. The spring receiving seat has a seat portion in surface contact with the tapered portion and an inner diameter portion facing the small diameter portion.

[0007]

According to the remote control structure of the vehicle transmission constructed as described above, when the select shaft is moved in the axial direction, the tapered end portion thereof comes into surface contact with the seat portion of the spring seat. The concentricity of the receiving seat and the select shaft is maintained, and the inner diameter portion of the receiving seat operates smoothly without contacting the small-diameter portion of the select shaft, and the operation is performed with a good shift feeling.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to FIG. In this figure, the same or similar parts as those in the related art are denoted by the same reference numerals, and description thereof is omitted. Case 2
A shift shaft 21 of a hollow shaft and a select shaft 50 of a solid shaft spline-fitted to the shift shaft 21 extend horizontally inside the shaft 0, and are rotatably supported by a needle bearing 25 and a bush 32, respectively. Although the structure is the same as the conventional one, the select shaft 50 and the spring receiving seat 51 are different from the conventional one. That is, the end of the select shaft 50 is provided with a tapered portion 52 and a small diameter portion 53. More specifically, shift lever 2
In order to reduce the diameter from the shaft portion 54 penetrated by the shaft 2 to the small-diameter portion 53, two steps of the slope portion 55 and the tapered portion 52 are performed.
In order to facilitate the processing of the tapered portion 52, the tapered portion 52 has a 45 ° tapered surface, and the inclined surface portion 55 has a tapered surface smaller than 45 °. The small diameter portion 53 has a length approximately three times the diameter. Spring seat 51
Has a cylindrical portion 57 having a flange 56 formed on the select shaft 50 side, and the spring 33 has a cylindrical portion 57.
Is in contact with a predetermined position of the case 20 while being seated on the flange 56 so as to cover the outside of the case. Flange 56
An appropriate gap is provided between the case 20 and the inner surface of the case 20. A sheet portion 58 is provided on the flange side of the cylindrical portion 57, and a taper surface having the same angle as the taper portion 52 of the select shaft 50 is formed. The inner diameter portion 59 of the cylindrical portion 57 has a diameter appropriately larger than the small diameter portion 53 of the select shaft 50, and the length of the cylindrical portion 57 is preferably approximately 2 to 2.5 times the inner diameter.

The operation of the present invention will be described. By turning a select lever (not shown) (see reference numeral 36 in FIG. 3), for example, when the shift lever 22 moves to the left in the drawing, the select shaft 50 is also driven, and the small diameter portion 53 enters the inside diameter portion 59 of the spring receiving seat 51. I do. Finally, the tapered portion 52 of the select shaft 50 and the spring receiving seat 5
The flange 56 of the spring seat 51 does not come into contact with the inner surface of the case 20 because the one seat portion 58 can be in close contact and maintain perfect concentricity. In the return stroke of the select shaft 50, the spring receiving seat 51 is fixed to the case 20 via the flange 56 by the elastic resilience of the spring while the concentricity is maintained. When detached from the seat 51, they do not come into contact with each other.

In the above description, the case of shifting to deceleration, that is, the case of the leftward movement of the select shaft 50 in the drawing has been exemplified, but it is a matter of course that the same structure may be adopted in the case of the rightward rotation in the drawing.

[0011]

Since the present invention is configured as described above, the spring receiving seat 51 associated with the select operation is provided.
The operation feeling is good since there is no contact between the shaft and the inner surface of the select shaft 51 or the case 20 and no friction or snagging occurs.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment according to the present invention.

FIG. 2 is a sectional view showing a remote control structure of a conventional vehicle transmission.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along the line BB of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 ... Lever 5 ... Power shift device 20 ... Case 21 ... Shift shaft 22 ... Shift lever 23,50 ... Select shaft 25 ... Needle bearing 30 ... Pin 26, 33 ... spring 34.35 ... washer 37 ... select lever 38, 53 ... small diameter part 39, 41 ... hole 40 ... stepped part 51 ... spring receiving seat 52 ... Tapered portion 54 Shaft portion 55 Slope portion 56 Flange 57 Cylindrical portion 58 Seat portion 59 Inner diameter portion

Claims (1)

(57) [Scope of request for utility model registration] A shift lever is operated via a select shaft which is turned by a power shift device and is moved in an axial direction, and is urged by a spring when the select shaft is moved in an axial direction. In the remote control structure for a vehicle, which is disposed so that the end of the select shaft is in contact with the spring receiving seat, the end of the select shaft has a tapered portion and a small diameter portion,
A remote control structure for a vehicular transmission, wherein the spring receiving seat has a seat portion in surface contact with the tapered portion and an inner diameter portion facing the small diameter portion.