JPS6014022Y2 - Kuratsuchi - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a clutch, and particularly to a clutch that is made smaller.

In general, a clutch is a means for transmitting the rotation of the motive vehicle to the driven vehicle, and has the function of disconnecting or connecting the motive vehicle and the driven vehicle. BACKGROUND ART Dog clutches have conventionally been provided as clutches that transmit rotation intermittently.

In this dog clutch, the motive wheel is fixed to the rotating shaft, the driven wheel is rotatably attached to the rotating shaft, and the driven wheel is moved along the rotating shaft, thereby meshing the motive wheel and the driven wheel. It transmits rotation or, conversely, cuts off the connection between the prime mover and the driven car.

Conventional clutches like this have a configuration in which the driven wheel is moved along the rotating shaft, so they have to be long in the axial direction, and the clutch itself is large, making it difficult to downsize. Met.

In addition, if the driven wheel is not moved properly, the meshing part is likely to be damaged, and an actuating means for the movement is also required.
This is where there was a structural problem.

Furthermore, if the connection means with this clutch is a gear mechanism, the driven wheel must be a gear or a new gear must be installed, but since the driven wheel moves, the tooth width must be widened or the driven wheel must be They must only engage when the car is in operation.

Therefore, there are many problems in terms of assembly, workmanship, and cost economy.

Apart from this, there is also a device, as shown in Japanese Utility Model Application Publication No. 52-2091, in which rotation is transmitted between a driving roller and a driven roller using friction caused by contact between the two.

In this clutch, when the clutch is stopped, the clearance grooves of the driven roller and the auxiliary wheel are aligned, and the driving roller is positioned within this clearance groove.By shifting the positions of the clearance grooves of the auxiliary wheel and the driven roller, The driving roller and the driven roller are brought into contact to create a rotating state, and the clutch operation pieces are sequentially collided with the notched grooves of the driving roller and the driven roller, so that the auxiliary wheel and the driven roller are arranged so that their relief grooves are located on the outer periphery of the driving roller. It is used to stop the engine and return it to the stopped state.

This type of clutch stops the driven roller by colliding the clutch operating piece with a notched groove, which causes a large shock at the time of stopping, and rotation is also transmitted through friction, resulting in a large moment of inertia. High-speed operation and application to large loads were not expected.

Therefore, in view of the above-mentioned conventional points, the present invention is capable of connecting and disconnecting without moving the driven wheel, can be made compact, reduces the shock when stopped, and rotates by engaging the water wheel and the presser pawl. It is a clutch that enables high-speed operation and application to heavy loads by transmitting
The objective is to provide a clutch that has unprecedented effects.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the clutch according to the present invention will be described in detail below with reference to the drawings.

A clutch 1 according to the present invention has a driving wheel 3 made of gears fixed to one end of a rotating shaft 2.

Its fixation is achieved by fitting a pin 4 passed through the rotating shaft 2 into a locking groove 6 provided in a mounting hole 5 of the prime mover 3.

Further, a water wheel 7 is attached to the other end of the rotating shaft 2.

Pawls 8 are integrally formed on the outer peripheral surface of the water wheel 7 at regular intervals, and one side of the pawls 8 is a locking end surface 9 raised at a right angle.

This water wheel 7 is integrally provided with a boss 10, and a pin 11 is passed through the boss 10 and the rotating shaft 2 to fix the water wheel 7 to the rotating shaft 2.

A driven wheel 1 has a gear group 12 integrally attached to the rotating shaft 2 between the prime mover 3 and the water wheel 7 for linking with other devices.
3 is rotatably provided via a sleeve 14.

The driven wheel 13 is located on the rook 7 side, and a presser pawl 15 is attached to the slightly protruding end surface 13a of the driven wheel 13 on the rook 7 side, which is located on the outer periphery of the water wheel 7 and is detachable from the pawl 8. It is.

The presser claws 15 are also arranged at regular intervals so as to correspond to the claws 8, and their bases are pivotally supported by pivot pins 16 protruding from the end surface 13a, and a guide is provided on the tip side of the presser claws 15. Protrude pin 17.

On the end surface 13a, a fan-shaped flange 18 is arranged in the same manner as the presser claw 15.
A groove 19 is formed between the driven wheel 13 and the flange 18 so as to stand up from the outer periphery of the protruding end surface 13a.

A ring-shaped spring 20 is interposed in this groove 19, and one end 20a of the spring 20 is connected to the driven wheel 13.
The other end 20b of the insertion hole 21a1 provided in the actuating crown 22 is inserted into the insertion hole 21b provided in the operating crown 22, respectively.

The operating crown 22 is a cap-shaped member having a through hole 23 in the center, and is attached to the driven wheel 13 so as to be able to rotate freely by slidingly contacting the outer peripheral surface of the flange 18 and covering the presser pawl 15. ing.

An elongated guide hole 24 is formed in a substantially tangential direction of the through hole 23 at a position corresponding to the presser claw 15 of the operating crown 22, and the aforementioned guide pin 17 is fitted into the guide hole 24.

Therefore, the operating crown 22 is configured to be able to rotate by a predetermined angle with respect to the driven wheel 13 due to the relationship between the guide hole 24 and the guide pin 17, and also due to the spring 20,
In FIG. 1, it is constantly biased clockwise.

As shown in FIGS. 3 and 4, the operating crown 22 rotates the tip of the presser pawl 15 toward the rotating shaft 2 when rotated clockwise, and rotates the presser pawl 15 when rotated counterclockwise. It is moved in a direction away from the shaft 2 to engage and disengage from the water wheel 7.

A locking step 25, 26 is formed on the outer peripheral surface of each of the driven wheel 13 and the operating crown 22.

A stopper 27 is locked to the locking steps 25 and 26.

The stopper 27 is connected to a shaft 2 separately arranged parallel to the rotation shaft 2.
It is a bifurcated thing attached to 8, and the tip 27a of each leg,
27b has its tip end surface in contact with each of the locking steps 25 and 26, and presses the operating crown 22 against the driven wheel 13 in a counterclockwise direction against the spring 20, thereby causing the presser pawl 15 and the water wheel 7 to It is cutting off the connection.

In this embodiment, each leg of the stopper 20 has a tip 27a that is pivotally connected to the shaft 28, and a leg that has a tip 27b that is fixed to the shaft 2B. A spring 29 is attached so as to be in constant sliding contact with the outer peripheral surfaces of the driven wheel 13 and the operating crown 22.

Note that 30 in the figure is a fixing pin that connects and fixes the driven wheel 13 and the gear group 12.

Next, the operation of the clutch 1 constructed in this manner will be explained.

When the motive wheel 3 is rotationally driven by a drive source such as a motor, the rook 7 rotates together with the rotating shaft 2.

In steady state, the stopper 27 is located at the tip 2 of one leg.
7a engages with the locking step 25 of the driven wheel 13, and the tip 27b of the other leg engages with the locking step 26 of the operating crown 22.

Therefore, as shown in FIG.
The rotation of the rook 7 is not transmitted to the driven wheel 13, and the driven wheel 13 does not rotate at all.

This transition from the steady state to the operating state is performed as follows.

That is, when an input acts on the stopper 27 and a force is applied to disengage the end 27b of the leg of the stopper 27 from the locking step 26 of the operating crown 22, the operating crown 22 is moved by the spring 20.
The presser claw 15 is rotated clockwise to move the presser claw 15 in the direction of the rotating shaft 2.

In this embodiment, the input acting on the stopper 27 is given by rotation of the shaft 28 in a predetermined direction.

As a result, the locking end surface 9 of the claw 8 provided on the rotating rook 7 engages with the presser claw 15, and the driven wheel 13 begins to rotate as the rook 7 rotates.

This state is shown in FIG. Next, the rotating driven wheel 13 causes the operating crown 22 to rotate together with the gear group 12, but a spring 2 is attached to the outer peripheral surfaces of the driven wheel 13 and the operating crown 22.
9, the locking step 26 of the operating crown 22 that has rotated comes into contact with the tip 27b of the stopper 27.

As a result, the rotation of the operating crown 22 is stopped, so the relative positional relationship with the driven wheel 13 is that it has rotated counterclockwise against the spring 20, and the presser pawl 15 and the rook 7 are rotated counterclockwise against the spring 20.
The engagement with is released.

At this time, the tip end 27a of the leg of the stopper 27 engages with the locking step 25 of the driven wheel 13, and the driven wheel 13 and the operating crown 2 at this time
The relative positional relationship with 2 is fixed.

As a result, the driven vehicle 13 returns from the operating state to the steady state.
rotation stops.

In this way, the clutch 1 rotates the driven wheel 13 intermittently by input to the stopper 27, but unlike conventional clutches, the driven wheel 13 is equipped with the operating crown 22, and rotates in the circumferential direction. Since the clutch action is based on motion, the length of the rotating shaft 2 can be shortened, and it is sufficient to make it long enough to mount the necessary gear group 12 in addition to the prime mover 3 and the driven wheel 13.

Therefore, the clutch itself can be made much smaller than conventional clutches.

In addition, since the driven wheel 13 is not configured to move along the rotating shaft 2 to perform a clutch action, the rotating means is not limited to gears, and belt hooks and other windings can be used in various ways such as transmission or rolling transmission. This makes it possible to take other means, making the clutch a product that can be used in a wide range of applications.

Furthermore, since no means for moving the driven vehicle is required, the structure is simple and assembly work can be simplified.

To return the activated clutch to a steady state, the operating crown 22 is stopped at the tip 27b of the stopper 27, and the driven wheel 13 is stopped by the elasticity of the spring 20. Since the shock at the time of stopping can be almost eliminated, and the rotation of the driving wheel 3 to the driven wheel 13 is also transmitted by the engagement between the rook 7 and the presser pawl 15, It also facilitates high-speed operation with a large moment of inertia and application to large loads.

As described above, the present invention is a clutch that can be sufficiently miniaturized, can be easily applied to high-speed operation and large-mass loads, has a wide range of uses, and is structurally simple. The clutch is highly reliable, has a high practical value, and has a beneficial effect.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention, in which Fig. 1 is an exploded perspective view of the clutch, Fig. 2 is a vertical sectional view of the clutch, and Fig. 3 is a longitudinal sectional view of the clutch.
The figure is a front view of the rook and presser pawl in a state where they are disengaged, and FIG. 4 is a front view of the same state in which they are engaged. 1...Clutch, 2...Rotating shaft, 3.
...Motor vehicle, 7...Rook, 13...
... Driven wheel, 15 ... Presser claw, 22 ...
- Operating crown.

Claims (1)

[Scope of utility model registration request] It has a rotating shaft to which the motive wheel is fixed, a rook is fixed to the rotating shaft, a driven wheel is rotatably provided, and the operating crown is attached so that it can rotate by a predetermined angle with respect to the driven wheel. At the same time, this actuating crown is provided with elongated guide holes having different distances from the center of the actuating crown at both ends, and the base of a presser pawl that can be freely engaged with and detached from the rook is pivotally supported on the end face of the driven wheel. A guide pin attached to the tip side of the presser pawl is inserted into the guide hole, and a force is applied between the driven wheel and the operating crown in the direction of engaging the presser pawl with the rook. An openable and closable stopper is provided with a spring interposed therebetween, a stopper forming a locking step on the outer peripheral surface of the driven wheel and the operating crown, and having two legs that slide on the outer peripheral surface of the driven wheel or the operating crown, By bringing the tips of these legs into contact with the locking steps, the relative angle between the driven wheel and the operating crown is locked at an angle that releases the engagement with the rook of the presser claw against the spring, and A clutch characterized in that a driving vehicle and a driven vehicle are connected by removing the leg of a stopper from a locking step portion of a crown.