JP2569141Y2 - Management machine clutch mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved technique for connecting and disconnecting a main clutch of a control device.

[0002]

2. Description of the Related Art Conventionally, a technique relating to a power transmission mechanism of a walking type management machine has been known.
46150. In the power transmission mechanism in this technology, power from the engine is transmitted from a pulley fixed on an output shaft of the engine to a pulley on an input shaft of a transmission case via a belt, and a tension pulley is provided between the pulleys to provide tension. A clutch was used, the tension pulley was connected to a clutch lever, and the clutch lever was rotated to enable disconnection and connection of power.

[0003]

The disconnection / connection of the main clutch can be switched by a method using the tension clutch or by sliding a meshing clutch. However, these clutches are connected to a clutch lever to rotate the clutch lever. Because the disconnection / connection switching was performed by movement, this operation requires releasing the one hand and rotating the clutch lever, and just before turning off the power, it is necessary to hold the handle with one hand and support it and it becomes unstable In the case where power is applied, the handle is similarly held with one hand and the clutch lever is operated with the other hand, so that the work becomes unstable immediately after the start of work, which may be dangerous.

[0004]

According to the present invention, an electromagnetic clutch is provided between an output shaft of an engine of a control device and an input shaft of a transmission case, and a sensor is provided on a grip of a steering wheel in order to solve such a problem. Provided and connected to the electromagnetic clutch, clutch ON only when gripping
It is configured to make it possible.

[0005]

[Function] Just by gripping the handle grip, the sensor is turned on, the electromagnetic clutch is activated and the main clutch is brought into contact, the power from the engine is transmitted to the transmission case, driving and driving the PTO shaft, enabling work When the handle is released from the grip of the steering wheel, the sensor is turned off, the electromagnetic clutch is disconnected, the power from the engine is cut off, and the management machine stops.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The problems to be solved and means to be solved of the present invention are as described above. Next, the embodiment shown in the attached drawings will be described. FIG. 1 is an overall side view of a management machine, and FIG. FIG. 3 is a plan view and FIG. 3 is a control block diagram.

1 and 2, the engine E is mounted on an engine frame 1 which projects forward from a transmission case 2 and has an axle at the lower end of the transmission case 2. 7, a running wheel 10 is fixedly mounted on the axle 7, a hitch 11 is provided at the rear of the center of the transmission case 2, and a rotary tilling device R is mounted on the hitch 11.
Chain case 12 erected on the rotary tilling device R
At the lower end, a tilling claw shaft 14 is laterally mounted, tilling claws 13 are implanted on the tilling claw shaft 14, and power is transmitted to the chain case 12 from a PTO shaft protruding from the side of the transmission case 2, The tilling claw shaft 14 is made rotatable.

A transmission lever 3 and a handle 4 project obliquely rearward from the transmission case 2, and an accelerator lever 5 and side clutch levers 6L and 6
R is attached, and the auxiliary handle 9 is suspended between the handles 4 on both sides.
The FF is designed to hold and hold the clutch when the clutch is released. And the sensor 15 which is the main part of this invention is provided in the grip 4a at the rear end of the handle 4. The sensor 15 is a sensor or a switch that is turned on when grasped lightly. The sensor 15 is not turned on when touched to enhance safety, and the sensor 15 is provided on the right or left or both grips 4a. However, when the sensor 15 is provided on both grips 4a, the clutch is turned ON only when both are gripped.

The sensor 15 is connected to a driving circuit 16 as shown in FIG.
7, the power is supplied from the engine 7 (however, the power can be supplied from the engine via a dynamo), and the electromagnetic clutch 20 can be operated. The electromagnetic clutch 20 is provided on an input shaft 21 to the transmission case 2, a pulley 22 is fixed on the input shaft 21, and an output shaft 23 of the engine E is provided.
A pulley 24 is fixedly mounted on the vehicle. A V-belt 25 is wound between the pulleys 22 and 24 so that power can be transmitted to the input shaft 21. When the electromagnetic clutch 20 is operated, the clutch is brought into contact. Thus, the power is transmitted to the transmission in the transmission case 2.

In such a configuration, the right grip 4
In the case where the sensor 15 is provided at the position a, the engine E is started, the traveling shift and the work clutch lever of the rotary tilling device R are operated, and both grips 4a are gripped. The transmission is transmitted from the input shaft 21 to the transmission case 2 via the electromagnetic clutch 20 via the pulley 24, the V-belt 25, and the pulley 22,
The running wheel 10 and the tilling claw 13 are rotated. Then, when the handle 4 is supported by the left hand and the right hand is released from the grip 4a, the electromagnetic clutch 20 is disengaged, the running and the work are stopped, and the speed change operation or the like can be performed with the right hand.

[0011]

[Effect of the Invention] The present invention is constructed as described above, and has the following effects. In other words, when you release your hand from the grip, the transmission of power is cut off, so you do not need to operate the clutch lever, even if you suddenly become in danger, you can stop the management machine just by releasing your hand and avoid danger The management machine will move forward quickly when starting high-speed driving or work, but will start running after holding the steering wheel with both hands instead of one hand, so it will be shaken It is now possible to run and work safely without any problems.

[Brief description of the drawings]

FIG. 1 is an overall side view of a management machine.

FIG. 2 is a plan view of the same.

FIG. 3 is a control block diagram.

[Explanation of symbols]

 E engine 2 transmission case 4 handle 4a grip 15 sensor 20 electromagnetic clutch

Claims (1)

(57) [Scope of request for utility model registration] An electromagnetic clutch is provided between an output shaft of an engine of a control device and an input shaft of a transmission case, a sensor is provided on a grip of a steering wheel, connected to the electromagnetic clutch, and the clutch is operated only when the grip is gripped. A clutch mechanism for a management machine, wherein the clutch mechanism is configured to be turned on.