JPS6252226A - One way clutch - Google Patents

Abstract

PURPOSE:To enable a clutch to be integrally rotated with a driven side, by forming a resilient piece in the peripheral edge of one of the side plates and increasing friction force generated with the driven side. CONSTITUTION:When a one way clutch 20 is built in a starter device, the clutch, providing a flange part 21a and a resilient piece 27 to be held between a rotor 8 of an AC generator 7 and a clutch outer 10 further placing the resilient piece 27 to be deflectively positioned for the flange part 21a, increases friction force in a part where a side plate 21 is held. Accordingly, the one way clutch 20 can be rotated always integrally with the rotor 8 and the clutch outer 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a one-way clutch, and particularly to a one-way clutch provided in an engine starter d of a vehicle.

[Prior Art] In a vehicle engine starting device, the rotation of a starter motor is transmitted to a crankshaft via a large number of gears.
It is necessary to prevent the rotation of the crankshaft from being transmitted to the starter motor.

Therefore, for example, in a motorcycle, as shown in FIG. A one-way clutch 6 is mounted on the boss portion 2a of the driven gear 2, and the rotor 8 of the AC generator 7 has the one-way clutch 6 provided at the tip of the crankshaft 3. Clutch outer 10 fixed to bolt 9
The rotation of the starter motor is controlled by the middle mountain 1 degree driven gear 2. The transmission is transmitted to the crankshaft 4 via the one-way clutch 6 and rotor 8 to start the internal combustion engine 3. When the internal combustion engine 3 is started, the crankshaft 4 is rotated by the internal combustion engine 3, and the rotor 8 and Although the clutch outer 10 is prevented from rotating, the driven gear 2 is not rotated by the one-way clutch 6, and the rotation of the internal combustion engine 3 is transmitted to the starter motor 1.
) I try not to.

One-way clutch 6 used in such a starting device
As an example, as shown in FIG. 2, a large number of cams 13 are arranged between a pair of ring-shaped side roots 11 and 12,
1. Lock the inner peripheral edge side of 12 with wire cage 171,
The cam 13 is sandwiched and held between the side plates 11 and 12, and the cam 13 is formed on the outer circumferential side of the one-way clutch 6.
The spring 15 is formed in a ring shape in the groove 13a of the spring 15.
It is rolled up to prevent it from coming off.

(Problems to be Solved by the Invention) In this way, the one-way clutch 6 constructed as shown in FIG. 11
The outer side of the AC generator 7 is prevented from being removed by the rotor 8 of the AC generator 7.

Therefore, the one-way clutch 6 thus connected is connected to the internal combustion engine 3 by the crank shaft 6, which rotates at J.
That is, it is desirable to rotate together with the rotor 8 and clutch outer 9 of the AC generator 7.

For this reason, conventionally, seven flange portions 11a are formed by bending slightly outward from the outer peripheral edge of the side plate 11, and this flange portion 11a
is sandwiched between the rotor 8 and clutch outer 10 so that it can rotate integrally with the rotor 8 and clutch outer 10, but since the side plate 11 is simply sandwiched between the rotor 8 and clutch outer 10, it cannot rotate integrally with them. However, depending on the degree of friction, it may rotate slower than these, or may not rotate at all.

Therefore, the present invention enables the one-way clutch to rotate integrally with the rotor and the clutch outer when the crankshaft is being rotated by the internal combustion engine.

[Means for solving problems]

In order to solve these problems, the present invention provides a one-way clutch in which a large number of cams are held between a pair of ring-shaped side plates, in which the outer peripheral edge of one of the side plates is aligned with the axis of the one-way clutch. It is characterized by forming an explosive piece that directs the force in the direction A to the right.

[For production]

Therefore, the outer peripheral edge of the side plate, which is held between the rotor and the clutch outer, is held between them by the elastic piece with a considerable amount of friction, so that it can rotate together with the rotor and the clutch outer.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 3 to 5.

The one-way clutch 20, like the conventional one, includes ring-shaped side plates 21 and 22, a large number of cams 23 arranged between the side plates 21 and 22, and engagement parts formed on the inner peripheral edges of the side plates 21 and 22. Hook the cam 2 between the C side plates 21 and 22.
3, and a coil spring 25 formed in the shape of a ring to prevent it from coming off, which is fitted in order into a groove 23a formed in a cam 23 corresponding to the outer circumferential side of the one-way clutch 20 and wound. A clutch portion 21a bent outward is formed on the outer peripheral edge of the side root 21 located on the rotor 8 side of the AC generator 7, which is the driven side.

That is, the side plate 21 has a pair of cut grooves 26, 26 formed at an appropriate number of places at equal intervals (for example, three places in the case of illustration) inward from the outer peripheral edge, and formed by the cut grooves 26, 26. Bend the tongue in the same direction as the axis of the one-way clutch 20 1
! , a resilient piece 27 is formed by being slightly offset from the flange portion 21a.

That is, the resilient piece 27 is attached to the flange portion 2 as shown in FIG.
1 a J: The force is biased toward the rim force 1123 side, or as shown in FIG. 5, it is biased toward the outside of the flange portion 21a. In this case, the former is more likely to be assembled to the starting device.
The side plate 21 is not deformed when the cam is moved evenly when the side plate 21 is
It can be held between 1 and 22.

Therefore, when the one-way clutch 20 is configured as described above, the one-way clutch 20 is used as a starting device (=
When the flange part 21a and the bullet 27 are held between the rotor 8 of the AC generator 7 and the clutch outer 10, the spring piece 27 is biased against the clutch part 21a. Since they are closer to each other, the number of 7 links in the sandwiched portion of the side plate 21 increases, and the one-way clutch 20 can always rotate integrally with the rotor 8 and the clutch outer 10.

〔Effect of the invention〕

As described above, the present invention is a one-way clutch in which a large number of cams are held by a pair of side plates, and since a resilient piece is formed on the outer periphery of one of the side plates, when the outer periphery of the side plate is held on the driven side, , the number of friction points with the driven side increases by 7, making it possible to rotate integrally with the driven side.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a one-way clutch installed in an automatic device, Fig. 2 is a partially cutaway front view of a conventional one-way clutch, and Fig. 3 is a partially cutaway view of the one-way clutch of the present invention. The front view, FIGS. 4 and 5 are sectional views taken along the line 1--TV in FIG. 3, respectively, showing different embodiments.

Claims (1)

[Scope of Claims] 1. In a one-way clutch in which a number of cams are held between a pair of ring-shaped side plates, a spring having a biasing force on the outer peripheral edge of one of the side plates in the same direction as the axis of the one-way clutch. A one-way clutch characterized by forming a single piece. 2. The one-way clutch according to claim 1, wherein the resilient piece is bent toward the cam. 3. The one-way clutch according to claim 1, wherein the resilient piece is bent on the opposite side of the cam.