JPS5839254B2 - Kuratsuchi Sochi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is configured such that driving and driven rotary bodies provided concentrically are relatively distanced from each other in the direction of their rotational axes P, and power transmission between the two rotary bodies is interrupted. This invention relates to a clutch device.

In such a latch device, there is a structure shown in FIG. 4 that utilizes a cam structure to move one rotating body relatively near and far in the axial direction.

In this device, a driving rotating body 10 and a driven rotating body 11 are provided on the same axis P, and the driving rotating body 10 is provided so that it can freely rotate only, and the driven rotating body 11 can only freely slide in the axial direction. A clutch piece 12.12 is provided on the opposing surfaces of both rotary bodies 10.11 to constitute a clutch 13, and both rotary bodies 10 are spline-fitted to .11 can be engaged and disengaged to form a clutch device 9 that transmits power to the driven rotary body 11, and a thrust bearing 25 is interposed on the side opposite to the clutch piece forming surface of the driven movable rotary body 11 to form a waveform. A cam body 26° 26 having a clutch 27 is provided, one of the cam bodies 26 on the movable rotating body side is loosely fitted onto the shaft 6 so that it can be rotated about the axis P1 by manual operation, and the other cam body 26 is fixedly installed on the fuselage side in a state that allows rotation of the shaft 6, and the clutch 13 is further installed between both rotating bodies 10 and 11.
A spring 14 is provided which urges in a direction to release the lock, and the movable rotating body 11 is slid in the direction of the axis P by the rotating operation of the one cam body 26 and the urging force of the spring 14. It is generally used as a left-right steering clutch device for left and right running wheels of agricultural machinery, etc.

In summary, the sliding movement of one movable rotating body 11 in the axial direction is made up of the engagement and disengagement of the teeth of the wave clutches 27 and 27.
On the other hand, because of the structure in which the wave-shaped clutch pieces are formed with curved irregularities, they cannot be easily cut and are very expensive.

Furthermore, since the wave-shaped clutch pieces cannot be formed directly on the movable rotary body 11, there is also the drawback that the overall width of the device becomes wider.

In addition to the above-mentioned clutch device, the present invention also provides that, in order to displace the movable side of the two rotating bodies in the direction of the rotational axis, a button is pressed on the movable rotating body in the radial direction thereof. A displacing cam surface is formed over the entire circumference, and the operating tool for displacing the movable rotary body is provided with a cam follower that acts to suppress the cam surface and displaces in the radial direction of the movable rotary body. characterized by something.

That is, since the cam surface is formed directly on the movable rotating body, the overall width of the clutch device can be kept to a minimum, and the cam surface has a shape that can be easily cut with a machine such as a lathe. Cam surface processing can be done easily and inexpensively,
Furthermore, since the cam surface does not need to be engaged with the cam surface in contact with each other over the entire circumference as in the prior art, the entire structure can be made simpler and cheaper.

Next, embodiments of the present invention will be described in detail with reference to illustrative drawings.

Figure 1 shows a Taylor-type cultivator 1, with a machine frame 2.
The engine 3 is mounted on the engine 3, and the engine power is transmitted to the transmission case 5 via the transmission mechanism 4.
7 can be selectively installed, and a handle 8 extending rearward from the top of the mission case that can be changed forward and backward.

FIG. 2 shows a steering clutch device 9 for the drive shafts 6, 6.
, the shaft ends of the drive shafts 6, 6 are butt-fitted to each other, and the drive rotary body 10 is loosely fitted to one drive shaft 6, and the driven rotary bodies of the drive shafts 6, 6 on both sides of the drive rotor 100 are fitted. 11.1
1 are spline-fitted so that they can only slide freely in the direction of the axis P, and clutch pieces 12...
Established.

The relative movement of the driven rotors 11, 11 with respect to the drive rotor 10 constitutes a clutch 13.13 that transmits the power from the drive rotor 10 to the respective driven rotor 11.11, and the clutch 13 is separated. A spring 14.14 is interposed between both rotating bodies 10.11, and a driven rotating body sliding structure 15.15 is provided for engaging the clutch 13.13. .

The sliding mechanism 15 has an annular cam surface 16 formed on the opposite side of the clutch piece forming surface of one of the driven movable rotary bodies 11, which is displaced toward the rotation axis P; A link 17.17 is pivotally connected in an X-shape by an axis P1 parallel to the axis P and is provided on the case wall, and a sphere 18.18 is rotatably held at the tip of the link, and a connecting link 19 is attached to the other end of the link. A push-pull cable 20 is connected to the push-pull cable 20 via the . , is interposed between the connecting point and the fixing point of the cable 20, and the operating tool 23 is configured by placing the sphere 18.18 in contact with the annular cam surface 16, thereby controlling the operating lever 21. By the gripping operation, the sphere 18.18 moves in the radial direction about the axis P, displacing the movable rotating body 11 in the direction of the rotation axis via the cam surface 16.
acts to suppress the cam surface 16 and the movable rotating body 11
The cam follower 18.18 is configured as a radially displaced cam follower 18.18.

In the figure, reference numeral 24 denotes an operating tool movement restrictor, which prevents the movable rotary body 1 from moving when the cam follower 18.18 moves relative to the cam surface 16.
It receives the reaction force of sliding movement in the direction of the axis P of the first button.

The cam surface 16 may have a shape that protrudes toward the axis P, and extends from the circumferential surface of the twisted movable rotating body 11 toward the axis of rotation P.
It is also good to form towards.

Note that the clutch device according to the present invention can be used not only as a steering clutch but also as a power on/off clutch for various uses.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the clutch device according to the present invention, FIG. 1 is an overall side view of a tiller equipped with the present invention, FIG. 2 is an overall sectional view of the clutch device, and FIG. 3 is an operation system. FIG. 4 is an overall sectional view showing an example of a conventional structure. 10... Drive rotating body, 11... Driven rotating body, 16... Cam surface, 18... Cam driven body, 23... Operating tool, P... Axis core.

Claims (1)

[Claims] 1 Concentric driving and driven rotating bodies 10.1
The clutch device is configured to connect and disengage power transmission between the two rotary bodies 10.11 by moving the rotary bodies 10.1 relatively far and near in the direction of the rotation axis P thereof, the movable side of the rotary bodies 10.11 being connected to the movable side of the rotary bodies 10.11. In order to displace the movable rotary body 11 in the direction of the rotation axis P, a cam surface 16 that is radially displaced in the direction of the rotation axis P is formed on the movable rotary body 11 over the entire circumference, and the movable rotary body 11 is displaced. A clutch device characterized in that an operating tool 23 for the purpose of the present invention is provided with a cam follower 18 that exerts a suppressing action on the cam surface 16 and is displaced in the radial direction of the movable rotating body 11.