JP2603903Y2 - Flat type one-way clutch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat one-way clutch which permits rotation in one direction and prevents rotation in the other direction.

[0002]

2. Description of the Related Art Conventionally, in order to permit rotation of a rotating member in one direction and prevent rotation in the other direction, the rolling member has a small playability at the time of reverse rotation due to a wedge action of a rolling member, and the rotating member and a supporting member are easily provided. As a one-way clutch that can be mounted between the outer ring and the outer ring, a one-way clutch that holds a plurality of rod-shaped cylindrical rolling members in a holding body and fits in the outer ring is used. The rolling member held by the holding body of such a conventional one-way clutch has a high axial direction height and a small outer diameter.

[0003] The conventional one-way clutch has no problem when the outer diameter of the inner race is small and is incorporated into a product having a relatively low rotational speed regardless of the axial length of the product. The following troubles occur when the product is incorporated into a product that is relatively large, has a short axial length, and has a relatively high rotational speed.

[0004] 1) When the outer diameter of the inner race is relatively large,
If a one-way clutch with a reduced axial height is used while maintaining the outer diameter of the rolling member as a rod-shaped cylinder with the same diameter as that of the conventional one, the surface pressure of the rolling member increases, and the rolling member becomes an outer ring due to rotational impact. In addition, there is a disadvantage that the inner ring is bitten and locked, and local scratches, deformation, wear and the like are promoted. 2) In the one-way clutch, the rolling member is pressed against the inner ring body and is in a sliding state. However, when the number of the rolling members is large, the rotational force increases, and when the number of the rolling members is reduced, the allowable transmission torque is proportional. There is a drawback that goes down. 3) If the rod-shaped cylindrical rolling member is shortened in order to reduce its own weight, there is a disadvantage that the rolling member bites into the outer ring member and the inner ring member and locks as described in 1) above.

[0005]

The problem to be solved is that the conventional one-way clutch has a relatively large outer diameter of the inner ring body, a short axial length of the product, and a relatively high rotational speed. When incorporated in a product, a sufficient clutch function cannot be obtained as a one-way clutch. In view of the above drawbacks, the object of the present invention is to obtain a good one-way clutch function even when incorporated into a product in which the outer diameter of the inner ring body is relatively large, the axial length of the product is short, and the rotational speed is relatively fast. To provide a flat type one-way clutch.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a one-way clutch comprising a holding member for holding a plurality of rolling members between an outer frame body and an inner ring body. It has a disk shape with a large outer diameter. When the outer frame body rotates in one direction, the disk-shaped rolling member is located in a free rotation range of the outer frame body having an inner peripheral surface of a polygonal shape, thereby enabling the outer frame body to rotate. Further, when the outer frame body rotates in the opposite direction, the disc-shaped rolling member moves from the free rotation area to the inhibition area due to the wedge action, and prevents the outer frame body from rotating in the opposite direction. The outer frame
The rotation of the inner ring is stopped and the
It is performed by operating the reverse rotation prevention mechanism that switches to the state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a first example of a flat type one-way clutch.
FIG. 2 is an enlarged cross-sectional side view showing a state in which the flat type one-way clutch shown in FIG. 1 is incorporated in, for example, a rotor portion of a fishing spinning reel; FIG. 3 is an enlarged sectional front view of the flat type one-way clutch shown in FIG.

In FIGS. 1 and 2, the flat type one-way clutch uses a hard material obtained by carburizing and quenching a steel material, and thereafter is subjected to, for example, nitriding treatment or other corrosion-resistant treatment for improving corrosion resistance. 1, a synthetic resin material holder 2, a plurality of disc-shaped rolling members 3, an inner ring body 10, and a ridge 4.

The outer frame 1 has a circular outer periphery and an inner peripheral surface formed in, for example, a regular octagonal polygon as shown in the figure, and the one side flange portion 2a of the holder 2 is fitted to the inner peripheral surface. The inner side surface of the other side flange portion 2b of the holder 2 is in contact with one side surface 1a of the outer frame body 1. In this case, one side flange portion 2a of the holding body 2 may be fixed to the inner peripheral surface of the outer frame body 1 by fitting such as press fitting. The inner peripheral surface of the outer frame 1 may be another number of regular polygons.

A plurality of through holes 2c formed in the holder 2
, A plurality of, in the figure, four, disk-shaped rolling members 3 are inserted and held, and these rolling members are placed on the outer periphery of the inner ring body 10 and are urged by the ridges 4. Further, the inner peripheral surface of the holding body 2 is directly mounted on the outer periphery of the inner race body 10 so as to act as a bearing for the rolling member 3.

The inner peripheral surface of the outer frame 1 is formed in a regular octagonal polygon as described above, whereby the free rotation area α of the rolling member 3 is formed at the corner 1b of the inner peripheral surface. A blocking surface β is formed in which the rolling member 3 abuts on the side 1c of the inner peripheral surface to prevent rotation. Further, a plurality of notches 1d are formed on the outer peripheral surface of the outer frame body 1, and are fitted to a rotating member, in this embodiment, a rotor 6 of a spinning reel, and can be integrally rotated. ing.

The disc-shaped rolling member 3 is made of a hard material such as high-carbon chromium bearing steel, and has a height H as shown in FIG.
The outer diameter dimension D is formed larger and the outer surface has a diameter of 2 μm to 2 μm.
Nickel plating is applied to a thickness of about 0 μm. The ridge 4 is bent in an N-shape so that one side 4a is in contact with the outer peripheral surface of the rolling member 3 and the other side 4b is a holder 2
2d.

The rotor 6 is rotated so as to be linked with the rotation of a handle (not shown).
And is supported by being fitted to a rotation shaft cylinder 11 protruding to the front side thereof, and a front portion thereof is fixed by a nut 13. A collar 12 is fitted on the outer peripheral surface inside the rotor 6 of the rotary barrel 11, and a reverse rotation preventing body 7 is held on the outer periphery. The reverse rotation preventing body 7 is formed with a reverse rotation preventing ratchet wheel 7a, and the locking claw 8 can be engaged. When the operating rod 20 is operated, the locking claw 8 can be engaged or disengaged with the reverse rotation preventing pawl 7a via a cam 9a of a cam portion 9 formed at the tip of the operating rod. Is controlled. Therefore, the reverse rotation preventing body 7 is held in a rotatable or stopped state. The inner race 10 of the flat type one-way clutch is fitted around the outer periphery of the reverse rotation preventing body 7 in a non-rotating manner.

The flat type one-way clutch is incorporated into the recessed portion of the rotor 6 by using a cushioning material 22 such as felt or leather.
After dropping, the holder 2 into which the disc-shaped rolling member 3 is inserted and the outer frame 1 are dropped so that the other flange portion 2b of the holder 2 is on the front side, and the plurality of cutouts 1d are removed. The stopper ring 17 is engaged with the hook 6b of the rotor 6 by being fitted to the rotor.

Next, the operation of the thus configured flat type one-way clutch will be described with reference to FIG. When the reverse rotation preventing body 7 is in the stopped state, the rotor (not shown) fitted to the outer frame body 1 is rotated clockwise in the forward direction, so that the outer frame body 1 is also integrally clockwise rotated in the forward direction. Is done. By this rotation, the disc-shaped rolling member 3 is positioned in the free rotation area α formed by the corners 1b of the inner peripheral surface of the outer frame body 1 against the urging force of the ridges 4, whereby the outer frame body 1 is Inner ring 1
Rotation with respect to 0 is possible.

When the rotor is rotated counterclockwise, the outer frame 1 of the flat type one-way clutch is also integrally counterclockwise rotated by this rotation. With this reversing operation, the disc-shaped rolling member 3 moves from the position of the free rotation range α to the blocking surface β formed by the side 1c of the inner peripheral surface as shown in the figure.
And the abutment of the disc-shaped rolling member 3 prevents reverse rotation of the outer frame 1 with respect to the inner race 10. At this time, since the reverse rotation preventing body 7 is in the stopped state, the rotation of the inner race body 10 fixed to the outer periphery of the reverse rotation preventing body 7 is also stopped, and as a result, the reverse rotation of the rotor is stopped.

At the time of this reversing operation, the disk-shaped rolling member 3
The reverse rotation of the rotor is promptly stopped because the play at the time of reverse rotation due to the wedge action is small and the reverse rotation preventing body 7 is in a stopped state in advance. If the reverse rotation preventing body 7 is in a rotatable state, the rotor can be integrally reversely rotated together with the inner ring body 10 and the reverse rotation preventing body 7.

As shown in FIG. 2, since the outer diameter D of the disk-shaped rolling member 3 is larger than the height H, the one-way clutch can be constituted by a small number of disk-shaped rolling members. In addition, since the outer diameter of the disc-shaped rolling member 3 is configured to be large, the surface pressure between the disc-shaped rolling member 3 and the blocking surface β formed by the side 1c of the inner peripheral surface of the outer frame 1 and the inner ring body 10 are reduced. As a result, even if it receives a rotational shock, it does not bite and lock, avoids a decrease in allowable transmission torque, and improves durability. Further, since the number of the disc-shaped rolling members 3 is small, the rotational force is reduced and the weight is reduced. Furthermore, as shown in the embodiment of the figure,
It can be incorporated in products with a thin axial direction.

FIG. 4 is an enlarged sectional rear view showing a second embodiment of the flat type one-way clutch. The first embodiment is characterized in that the inner peripheral surface of the holding body 2 is separated from the outer periphery of the inner race body 10 and that the disc-shaped rolling member 3 is provided with a through hole 3a to reduce the weight. This embodiment is different from the embodiment.

FIGS. 5 and 6 show a third embodiment of the flat type one-way clutch. FIG. 5 is an enlarged cross-sectional rear view of the flat type one-way clutch, and FIG. 6 is the same as the configuration shown in FIG. ,
FIG. 2 is an enlarged cross-sectional side view of an essential part in which a flat type one-way clutch is incorporated in a fishing spinning reel.

5 and 6, the outer frame 1 'of the flat type one-way clutch is formed into a cylindrical shape with a bottom by drawing using a hard material obtained by carburizing and quenching a steel plate. 1
In addition, a through hole 1e is formed to fit the outer periphery of the outer periphery 0, and a plurality of protrusions 1f are formed on the outer periphery to form corners 1g of the inner peripheral surface.
A free rotation area α of the rolling member 3 is formed, and a blocking surface β where the rolling member 3 is in contact with the side 1h of the inner peripheral surface to prevent rotation is formed to form a deformed polygon.

A holding ring 23 is fitted and fixed in an opening of the outer frame 1 ', and a holder 2' is inserted into the outer frame 1 '. A plurality of through holes 2e of the holder 2 '
In the figure, four disc-shaped rolling members 3 are inserted and held, and these rolling members are mounted on the outer periphery of the inner ring body 10 and are pressed and urged by the ridges 4 '. The ridges 4 'are attached to the holder 2' by folding back a plurality of tongue pieces 4c formed on both sides of the holder 2 '. Further, a rectangular through hole 4d and a through hole 4
d Spring piece 4 bent inward to press rolling member 3
e is formed. Incidentally, both side surfaces of the rolling member 3 may be spherical surfaces having extremely low height as shown in FIG. The clutch operation of the flat one-way clutch according to the third embodiment is substantially the same as that of the first embodiment.

[0023]

According to the present invention, the outer diameter of the disc-shaped rolling member is made larger than the height, so that the outer diameter of the disc-shaped rolling member can be increased. The surface pressure between the rolling member, the inner peripheral surface of the outer frame, and the inner race can be reduced. Therefore,
Even if it receives a rotational shock, it will not be locked by biting, and a reduction in the allowable transmission torque will be avoided, and the durability will be improved. Further, since the number of disk-shaped rolling members can be reduced, the rotational force is reduced and the weight is reduced . In addition, the inner ring is rotated or
Is configured to be held stationary, but
It is possible to provide a flat type one-way clutch which has an excellent effect in practical use, such as being compact .

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional rear view showing a first embodiment of a flat type one-way clutch.

FIG. 2 is an enlarged cross-sectional side view of an essential part showing a state in which the flat type one-way clutch shown in FIG. 1 is incorporated in a rotor portion of a fishing spinning reel.

FIG. 3 is an enlarged sectional front view of the flat type one-way clutch shown in FIG. 1;

FIG. 4 is an enlarged cross-sectional rear view showing a second embodiment of a flat type one-way clutch.

FIG. 5 is an enlarged cross-sectional rear view showing a third embodiment of a flat type one-way clutch.

6 is an enlarged cross-sectional side view of an essential part showing a state in which the flat type one-way clutch shown in FIG. 5 is incorporated in a rotor portion of a fishing spinning reel.

[Explanation of symbols]

 1, 1 'outer frame 2, 2' holder 3 disk-shaped rolling member H height D outer diameter

Continuation of the front page (56) References JP-A 3-333 (JP, U) JP-A 53-61559 (JP, U) Utility model registration 2586756 (JP, Y2) JP-A 43-6824 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) F16D 41/06 A01K 89/01

Claims (1)

(57) [Scope of request for utility model registration] 1. A holding member for holding a plurality of rolling members between an outer frame body and an inner ring body, wherein the shape of the rolling members is a disk shape having an outer diameter dimension larger than a height, and A flat one-way clutch in which the inner peripheral surface of the outer frame is polygonally shaped to allow free rotation of the rolling member and prevent rotation by a wedge action, wherein the inner race is an axial direction of the inner race. A flat type one-way clutch, wherein the clutch is held in a rotating state or a stopped state by a reverse rotation preventing mechanism disposed outside .