JP2571001Y2 - One-way clutch retainer - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a one-way clutch in which a large number of sprags are provided between an outer race and an inner race and the outer race and the inner race are engaged and disengaged by the operation of the sprags to transmit torque in only one direction. In particular, the present invention relates to a retainer in which the sprags are arranged at a predetermined pitch in a circumferential direction.

[0002]

2. Description of the Related Art As a conventional technique, there is one having a structure shown in FIG. That is, the outer race 1 and the inner race 2 are fitted concentrically while maintaining a predetermined gap in the radial direction,
A large number of sprags 3 are arranged between the outer race 1 and the inner race 2 in the circumferential direction. An annular outer circumferential retainer 4 having a large number of window holes in the circumferential direction;
And the inner circumferential retainer 5 is sequentially arranged concentrically in the radial direction and fitted between the outer race 1 and the inner race 2. The outer circumferential retainer 4, the ribbon spring 6, and the inner circumferential retainer 5 have the above-described window holes. The sprags 3 are fitted together, the sprags 3 are arranged at a predetermined pitch in the circumferential direction, and are neutralized by the spring force of the ribbon spring 6.

For example, five gate-shaped drag clips 7 are attached to the outer peripheral retainer 4 in the circumferential direction at a predetermined pitch, and the outer peripheral end of the drag clip 7 is elastically engaged with the inner peripheral surface of the outer race 1 to thereby hold the outer peripheral retainer 4. The outer race 1 is strongly engaged. A strip-shaped drag strip 8 is attached to the inner diameter side of the inner peripheral retainer 6, and the inner peripheral surface of the drag strip 8 is slidably and elastically contacted with the outer peripheral surface of the inner race 2 to make the inner peripheral retainer 5 inner race. 2 Loosely lock.

[0004]

In the prior art described above, a small-sized drag clip 7 is attached to the outer circumferential retainer 4 and the outer circumferential retainer 4 is engaged with the outer race 1 by the drag clip 7. However, there are drawbacks that the cost increases and the cost increases, and the assembling requires time and effort. It is an object of the present invention to obtain a new one-way clutch which has solved the above-mentioned disadvantages.

[0005]

Means for Solving the Problems The present invention is configured as follows to achieve the above object. That is, between the outer race and the inner race, an annular retainer having window holes formed at a predetermined pitch in the circumferential direction is provided concentrically,
In a retainer of a one-way clutch in which a large number of sprags provided between the outer race and the inner race are fitted into each of the window holes of the retainer and arranged at a predetermined pitch in a circumferential direction, the wall of the retainer is located upward and Wrap around
Between the window hole and the edge of the window hole in the circumferential direction.
A plurality of engaging pieces projecting radially outward from one edge of the outer race are formed in a circumferential direction, and an outer peripheral end of the engaging piece is pressed into engagement with an inner circumferential surface of the outer race. is there.

[0006]

Since the present invention is constructed as described above, when the retainer is fitted between the outer race and the inner race, the outer peripheral end of the engaging piece is pressed against the inner peripheral surface of the outer race. Together, the sprags fixed to the outer race and interposed between the outer race and the inner race are maintained at a predetermined pitch in the circumferential direction by the window holes of the retainer. Also, the protrusion of the engagement piece
Even if the direction is slightly shifted due to manufacturing,
Upward from one of the edges of the window hole that faces in the circumferential direction
And turned back in the circumferential direction to project outward in the radial direction
From the outer peripheral end of the engagement piece and the inner peripheral surface of the outer race.
Even if the engagement position shifts in the circumferential direction, it does not shift in the axial direction.
No.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a perspective view of a retainer, and FIG. 3 is a sectional view taken along line III-III of FIG. Note that, in FIG. 1, the portions denoted by the same reference numerals as those in FIG. 4 have substantially the same structure as in FIG. 1 to 3, reference numeral 10 denotes an outer peripheral retainer which is a feature of the present invention. The outer peripheral retainer 10 is formed of a sheet metal material, and as shown in FIGS.
For example, 20 to 25 rectangular window holes 1
2 are formed at a predetermined pitch in the circumferential direction. The window holes 12 are for fitting the outer peripheral portions of the sprags 3 provided between the outer race 1 and the inner race 2 to arrange the sprags 3 at a predetermined pitch in the circumferential direction.

In the above-mentioned window holes 12, engaging pieces 13 projecting radially outward are formed at the edges of, for example, five window holes 12a at predetermined intervals in the circumferential direction. The engagement piece 13 is formed by folding the window of the main body 11 upward and in one circumferential direction when forming the window hole 12a. In addition, this engagement piece 13
One edge of the edge of the window hole 12a that faces in the circumferential direction
From the outside in the radial direction. Then, the outer peripheral retainer 10 is fitted into the outer race 1, and
The outer peripheral edge 13a is pressed against the inner peripheral surface of the outer race 1 so that the outer peripheral retainer 10 is engaged with the outer race 1 so as not to rotate relatively.

According to the above embodiment, when the outer peripheral retainer 10 is fitted between the outer race 1 and the inner race 2, the outer peripheral retainer 10 becomes the outer peripheral edge 1 of the engagement piece 13.
3 a engages with the inner peripheral surface of the outer race 1 and is fixed to the outer race 1. Each of the sprags 3 interposed between the outer race 1 and the inner race 2 has an outer peripheral portion defined by each window hole 12 of the outer peripheral retainer 10 and an inner peripheral portion defined by each window hole of the inner peripheral retainer 5. The pitch in the direction is maintained at a predetermined value. Then, in FIG. 1, when the outer race 1 relatively rotates to the left with respect to the inner race 2,
When the sprags 3 rotate to the left, that is, rotate in the upright direction to frictionally engage the outer race 1 and the inner race 2, and the outer race 1 relatively rotates to the right with respect to the inner race 2, the sprags 3 rotate to the right. That is, the frictional engagement is released by rotating in the inclined direction.

[0010]

As is clear from the above description, in the present invention, the retainer is engaged with the outer race by the engagement piece formed on the outer peripheral surface of the retainer, so that the number of parts is reduced, the cost is low, and the assembling is easy. It has the effect of being easy. Further, in the present invention, the projecting direction of the engagement piece is slightly shifted.
Also, the pressure contact between the outer peripheral end of the engagement piece and the inner peripheral surface of the outer race
Since the engagement position does not shift in the axial direction, the retainer
It is not held deviated from the outer race. Ma
Also, by folding the retainer wall upward and circumferentially
Window holes are formed and project radially outward.
Since the engaging piece is also formed, the engaging piece and the window hole can be easily manufactured.
It also produces effects such as

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of an embodiment of the present invention.

FIG. 2 is a perspective view of a retainer.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a sectional view of a main part showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 outer race 2 inner race 3 sprag 5 inner retainer 6 ribbon spring 8 drag strip 10 outer retainer 11 main body 12 window hole 13 engagement piece 13a outer peripheral edge

Claims (1)

(57) [Scope of request for utility model registration] An annular retainer having window holes formed at a predetermined pitch in a circumferential direction is provided concentrically between an outer race and an inner race, and a number of sprags provided between the outer race and the inner race are provided. In a retainer of a one-way clutch, which is fitted into each window hole of the retainer and is arranged at a predetermined pitch in a circumferential direction, a wall of the retainer is located upward and circumferentially.
In the direction of the window hole and the edge of the window hole
A plurality of engaging pieces protruding radially outward from one peripheral edge facing in the circumferential direction were formed in the circumferential direction, and the outer peripheral end of the engaging piece was pressed into engagement with the inner peripheral surface of the outer race. A one-way clutch retainer, characterized in that: