JPH10184909A - Sliding plate for shift fork - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the manufacture of a shift fork so as to reduce costs by assembling a leaf spring in the resin plate main body of a sliding plate, the leaf spring being pressed into a notched loading part provided in the shift fork for preventing the plate main body form being pulled out from the shift fork. SOLUTION: A sliding plate 11 loaded in both ends of the circular-arc part 2 T-shaped in section of a shift fork 1 is constructed by assembling a leaf spring 21 in a plate main body 12 made of a resin, the leaf spring being pressed into a notched loading part 5 provided in the thin part 3 of the circular-arc part 2. This resin plate main body 12 has a window-like engaging part 16 provided in a pair of flat surfaces 14 integrally formed in both sides of a sliding surface part 13 and a triangular projecting holding part 18 integrally provided toward the leaf spring 21. On the other hand, the leaf spring 21 is elastically deformed so as to bend a roughly rectangular flat plate three-dimensionally and change its width w2 , and the pressing-in of a sliding plate 11 is performed by elastically narrowing the width w2 of the leaf spring 21 and pushing it in to the loading part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding plate mounted on a shift fork.

[0002]

2. Description of the Related Art Conventionally, a sliding plate mounted on a shift fork has been made of metal, but in recent years, a sliding plate made of resin has been developed for the purpose of reducing friction and wear. 13 and 14 show a state in which a sliding plate 52 made of resin is mounted on the shift fork 51 as an example.

However, the conventional resin sliding plate 52 is mounted on the shift fork 51 by being integrated with the shift fork 51 by insert molding.

[0004] Thus is the sliding plate 52 of the shift fork 51 dimensional accuracy of the hot water cutting plane (drawing L ₁ size and L ₂ dimension) required for, thereby the shift fork 5
There is a problem that it takes a lot of labor and time to manufacture the device 1 and the cost is high.

[0005] Since there are a plurality of shift forks 51, some of which have different shapes, different insert molding dies must be prepared for each different shape. Therefore, also from this point, there is a problem that it takes much labor and time to manufacture the shift fork 51 and the cost is high.

[0006]

SUMMARY OF THE INVENTION In view of the foregoing, the present invention is not integrated with a shift fork by insert molding, but is instead mounted by press-fitting. It is an object of the present invention to provide a shift plate for a shift fork, which is easy to manufacture and advantageous in cost.

[0007]

In order to achieve the above object, a sliding plate for a shift fork according to the present invention is a sliding plate mounted on a shift fork by press-fitting, wherein a plate body made of resin, A plate spring that is assembled to the plate body and press-fitted into a notch-shaped mounting portion provided on the shift fork to prevent the plate body from falling out of the shift fork is provided.

The sliding plate for a shift fork of the present invention having the above-described structure is manufactured by molding a resin plate body independently and assembling a leaf spring with the plate body.
The assembly including the resin plate body and the leaf spring is mounted by press-fitting the assembly into a shift fork. Therefore, unlike the conventional case, it is not necessary to have the dimensional accuracy of the hot-water cut surface with the sliding plate of the shift fork or to prepare a plurality of insert molding dies, which makes it easy to mount or manufacture the shift fork. Can be realized.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a state in which a sliding plate 11 according to the embodiment is mounted on a shift fork 1.
As shown in the drawing, one of the sliding plates 11 is mounted on each of both ends of an arc-shaped portion 2 having a T-shaped cross section of the shift fork 1.

FIG. 2 is an enlarged view of part A of FIG.
Further, as shown in FIG. 3, the sliding plate 11 is mounted by being press-fitted into a notched mounting portion 5 provided in the thin portion 3 of the arc-shaped portion 2 of the shift fork 1. Press-fitting is carried out by pushing the mounting portion 5 so as to narrow the width w ₂ resiliently the leaf spring 21 with slightly greater width w ₂ than the width w ₁ of the mounting portion 5.

The sliding plate 11 is obtained by assembling a plate spring 12 with a resin plate body 12 and has the following configuration.

That is, first, the resin plate body 12
Is formed integrally with a pair of parallel flat portions 14 and 15 on both sides of a sliding surface portion 13 formed into a shape along the inner surface 3a of the thin portion 3 of the shift fork 1 to form a substantially U-shaped cross section as a whole. Window-like engaging portions 16 and 17 for engaging and holding the leaf spring 21 are provided in pairs on the flat portions 14 and 15, and the leaf spring 21 is engaged when the leaf spring 21 is assembled. The leaf springs 2 are fixed so that they do not come off
A triangular projection-shaped holding portion 18 is provided integrally with the leaf spring 21 at a position located on the back side (sliding surface portion 13 side) of the device 1. 4 to 7 show the plate body 12 alone.

As shown in FIGS. 8 to 10, the leaf spring 21 is formed by three-dimensionally bending a substantially rectangular flat plate into a substantially rectangular shape or a substantially circular arc shape (substantially rectangular shape in the figure), and has a width w. ₂ are deformed elastically so as to change the shape of the plate body 12. The substantially rectangular chamfered portions 22 are provided at the four corners, so that the edges of the plate body 12 in the direction orthogonal to the bending direction at the time of assembling are formed at the respective edges. Are provided with protruding engagement portions 23 and 24 that engage with the engagement portions 16 and 17 of the first and second portions.

A plate spring 21 is attached to the plate body 12 having the above-described structure.
To produce the sliding plate 11 as shown in FIG. 11 and FIG.

The leaf spring 21 has its respective engaging portions 23, 24
Is inserted into the window-like engaging portions 16 and 17 of the plate body 12 from the inside, so that the plate body 12 does not move in the vertical direction in FIG.
11 are sandwiched between the triangular projection-shaped holding portion 18 and the peripheral portions 16a and 17a of the engaging portions 16 and 17 opposed to the holding portion 18 so that the plate body 12 is moved in the left-right direction in FIG. It does not move. Thus the leaf spring 21 is not disengaged from the plate body 12, without the earthmoving N殆In this assembled position, by changing the bending angle of the dogleg is elastically deformed to change the width w _2.

As described above, the leaf spring 21 is attached to the plate body 12.
To produce a sliding plate 11, and then, as shown in FIG.
The pair of flat portions 14 and 15 sandwich the thin portion 3 of the shift fork 1, and the leaf spring 21 is mounted so as to be pressed into the notched mounting portion 5.

The width w _{2 of the} notched mounting portion 5 is press-fitted into the notched mounting portion 5.
The spring 21 whose elasticity has been narrowed is pressed against the inner surface of the mounting portion 5 by the reaction force (elastic return force).
Since the plate spring 21 contacts the inner surface of the mounting portion 5 at an acute angle, the leaf spring 21 is firmly hooked on the inner surface of the mounting portion 5 and does not come off. Therefore, the plate body 12 or the entire sliding plate 11 to which the leaf spring 21 is assembled can be reliably prevented from coming off.

The sliding plate 11 is a shift fork 1
Against the inner surface 13 of the sliding surface portion 13 of the plate body 12.
a comes into contact with the inner surface 3a of the thin portion 3 of the shift fork 1, or the end surfaces 14a, 15a of the flat portions 14, 15 of the plate body 12 contact the inner surface 4a of the thick portion 4 of the shift fork 1. It is positioned by doing.

The sliding plate 11 having the above configuration has the following effects.

That is, first of all, as shown in FIGS. 1 to 3, the shift fork 1 only needs to provide the notched mounting portion 5 at the portion where the sliding plate 11 is mounted, and does not require dimensional accuracy. . In addition, there is no need to prepare a plurality of insert molding dies as in the related art. Therefore, the manufacture of the shift fork 1 can be facilitated, which is advantageous in cost.

The window-shaped engaging portion 1 is attached to the plate body 12.
6, 17 and a triangular projection-like holding portion 18 and a projection-like engaging portion 23, 24 on the leaf spring 21 to assemble the leaf spring 21 on the plate main body 12. The leaf spring 21 is easy to assemble, and the leaf spring 21 does not easily come off the plate body 12. Therefore, it is possible to provide a sliding plate product that is easy to assemble and hard to be disassembled.

The sliding plate 11 is mounted on the shift fork 1 by press-fitting the leaf spring 21 into the cutout mounting portion 5 provided on the thin portion 3 of the shift fork 1. Sliding plate 1
1 is easy to mount, and the sliding plate 11 is hard to come off from the shift fork 1. Therefore, it is possible to provide a shift fork product in which the sliding plate 11 can be easily mounted and is hardly disassembled.

[0024]

The present invention has the following effects.

That is, in the present invention having the above-described structure, first, the shift fork need only be provided with a cutout mounting portion at a portion where the sliding plate is mounted, and dimensional accuracy is not required. In addition, there is no need to prepare a plurality of insert molding dies as in the related art. Therefore, the manufacture of the shift fork can be facilitated, which is advantageous in terms of cost.

Further, since the slide plate is mounted on the shift fork by press-fitting a leaf spring into a cutout mounting portion provided on the shift fork, the slide plate can be easily mounted on the shift fork, and The sliding plate does not easily come off the shift fork. Therefore, it is possible to provide a shift fork product in which the sliding plate can be easily mounted and is not easily disassembled.

[Brief description of the drawings]

FIG. 1 is a front view of a shift fork equipped with a sliding plate according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a front view showing a mounting method of the sliding plate.

FIG. 4 is a front view of a plate main body in the sliding plate.

FIG. 5 is a bottom view of the plate body.

6 is a sectional view taken along line CC in FIG. 5;

FIG. 7 is a sectional view taken along line BB in FIG. 4;

FIG. 8 is a front view of a leaf spring in the sliding plate.

FIG. 9 is a bottom view of the leaf spring.

FIG. 10 is a side view of the leaf spring.

FIG. 11 is a front view of the sliding plate.

FIG. 12 is a bottom view of the sliding plate.

FIG. 13 is a front view of a shift fork equipped with a sliding plate according to a conventional example.

14 is an enlarged sectional view taken along line DD in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shift fork 2 Arc-shaped part 3 Thin part 3a, 4a, 13a Inner surface 4 Thick part 5 Mounting part 11 Sliding plate 12 Plate body 13 Sliding surface part 14, 15 Flat part 14a, 15a End face 16, 17 Engaging part 16a , 17a Peripheral part 18 Holding part 21 Leaf spring 22 Chamfered part 23, 24 Engagement part

Claims (1)

[Claims] 1. A sliding plate (11) mounted on a shift fork (1) by press-fitting, comprising: a resin plate body (12); A plate spring (21) press-fitted into the notch-shaped mounting portion (5) provided in 1) to prevent the plate body (12) from coming off with respect to the shift fork (1). Sliding plate for shift fork.