JPS6237780Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to an operating device for a vehicle clutch.In detail, the clutch can be turned on and off using a pedal at the foot, and when the clutch is depressed, it can be turned on or off.
It relates to a device that can be maintained in its original state.

Conventionally, in this type of device, as shown in Figure 1,
A hook member 22 having a locking pawl 22a on a bracket 18 attached to the tip of the clutch operating arm 15.
A pedal 19 which is fixed integrally is provided rotatably pivoted by a pin 21, and when stepping on this pedal 19, the front side of the pedal 19 is stepped on, and at the time of the final depression, the rear side of the petal 19 is stepped on. There was a structure in which the lower part of the member 22 was rotated forward to engage the locking pawl 22a with a locking body 24 provided under the step stand.

However, in the conventional device described above, if the timing of stepping on the front part of the petal 19 and then the rear part at the final point is even slightly off, the locking pawl 22
A and the locking body 24 do not engage, and not only do they not engage, but it becomes impossible to press the pedal 19 as shown in Fig. 1, and the clutch is forced to remain in the "disengaged" position. It was extremely troublesome to operate.
This invention aims to overcome the drawbacks of the above-mentioned conventional devices.

To achieve this objective, this invention took the following technical measures. That is, in this invention, the bracket 18 is integrated with the tip of a clutch arm 15 that is linked to a clutch whose base side is pivoted at a proper position under the step pedestal 12 and whose distal end side is provided so as to project above the step pedestal 12 and be energized. A petal 19 is rotatably attached to the bracket 18 via a pin 21, and the front lower part of the petal 19 is configured to restrict downward rotation by the front upper part of the bracket 18, A hook member 22 having a locking pawl 22a is rotatably provided on the pin 21, and between the hook member 22 and the petal 19 there is a
A spring 23 is interposed therebetween to expand the parts B to each other and connect the front parts C and D in a normal state, and a locking pawl 22a of the hook member 22 is provided below the step base 12 when stepping on the rear upper part of the petal 19. The operating device for a vehicle clutch is provided with a locking body 24 that engages.

One embodiment of this invention will be described in detail with reference to the drawings. Reference numeral 1 is a towing vehicle with a rice transplanter 20 attached to the rear. 2 is a transmission case. Reference numeral 3 denotes an engine, which is mounted on an engine stand attached to the front part of the transmission case 2. 4 indicates the bonnet. Reference numerals 5 and 5 denote chain cases, which are fixed to the base portions on both left and right sides of the transmission case 2, and have distal ends extending rearward and downward. 6 is a front wheel, 7 is a rear wheel, 8 is a control handle, and 8 is a control seat.

Reference numeral 10 is a support column, which connects the left and right chain cases 5, 5.
The control seat 9 is erected on a connecting body 11 that connects the control seat 9 and supports the control seat 9.

Reference numeral 12 denotes a step base, which is stretched below the front side of the pilot seat 9. 13 indicates a change lever. 14 is an input pulley, and 14a is an output pulley of the engine 3.

Reference numeral 15 denotes a clutch arm that is linked to the main clutch in the mission case 2. Its base is pivotally connected to the mission case 2, and its tip is fitted with a spring 1 so as to protrude from a hole 16 formed in the step base 12.
At 7, it becomes a bullet attack force.

Reference numeral 18 denotes a bracket, which is formed by bending a steel plate into a U-shape, and the clutch arm 15 is fitted into the bent groove to be integrally fixed thereto.

19 is a petal, a mold fitting 19a is attached to the back side, and the bracket 18 is placed between the metal fittings 19a.
The petal 19 is pivotally connected to the bracket 18 by a pin 21 so as to be rotatable.
Then, the lower surface of the petal 19 and the bracket 18
The petal 19 is placed in contact with the upper surface of the holder so as to prevent the petal 19 from rotating forward beyond a predetermined amount. E is a stopper surface provided on the front upper surface of the bracket 18.

A hook member 22 is made of an iron plate and has a fishhook shape when viewed from the side, and integrally forms a locking pawl 22a. The upper and lower intermediate portions of this hook member 22 are pivotally attached to the pin 21.

A spring 23 is wound around the pin 21 and has one end hooked to the hook member 22 and the other end hooked to the back surface of the petal 19, so that the rear sides A and B of the hook member 22 and the petal 19 are mutually expanded. It is opened and biased so that the front side C and D are normally joined.

24 is a locking body, and a locking hole 26 is attached to a metal fitting 25 attached to the front lower part of the hole 16 of the step base 12.
The locking pawl 2 of the hook member 22
2a is provided on the upper edge of the locking hole 26 so as to be able to be locked and removed.

Reference numeral 27 denotes an elevating link mechanism, in which the bases of an upper link 27a and a lower link 27b are pivotally connected to the pillar 10, and the rear parts of both links are pivotally connected by a vertical link 27c to form a parallel link. The rice transplanter 20 is connected. Reference numeral 28 denotes a hydraulic cylinder device, in which the base of the cylinder is pivotally connected to the transmission case 2, and the tip of the piston is pivotally connected to an arm 29 that is integrally attached to the upper link 27a.
0 can be moved up and down.

30 is a seedling link, 31 is a planting rod, and 32 and 33 are soil leveling floats, each of which is a main component of the rice transplanter.

Reference numeral 34 designates preliminary seedling stands provided on both the left and right sides of the pilot seat. 35 indicates a conductive shaft that can be bent at a universal joint.

In the configuration of the above example, the engine 3 is started to transmit power to each rotating part. Then, the vehicle is propelled and the rice transplanter 20 is towed via the elevating link mechanism 27.

Then, the seedlings placed and housed in the seedling tank 30 of the rice transplanter 20 are divided by a planting rod 31 and planted onto the soil leveled by leveling floats 32 and 33. In this way, the seedling planting work is carried out, but when the number of seedlings in the seedling tank 30 decreases and it becomes necessary to replenish the seedlings, the operator randomly plants the petals 19 without stepping on the front upper surface of the petal 19. 19, the clutch arm 15 is rotated via the petal 19 as shown in FIG. Then, the engaging claw 22a portion is pushed further downward along the rear wall surface of the locking body 25 as shown in FIG. At this time, the locking claw 2
Even when 2a hits the locking body 24, it slides while escaping to the rear side due to the spring 23, so the pedal 19 can be depressed, and finally the locking pawl 22a touches the locking hole 2
6 as shown in FIG. Therefore, even if you stop stepping on the pedal, that state will be maintained. Therefore, the main clutch in the transmission case 2, which is interlocked with the clutch arm 15, is held in the "disengaged" state, and the propulsion of the vehicle 1 and the operation of the rice transplanter 20 are stopped.

In this state, the operator replenishes the seedling tank 30 with the seedlings stored in the preliminary seedling stand 34 in advance. Then, when the supply is finished, Petal 19
Step on the front side of the Then, as shown in Fig. 9, the hook member 24 rotates backward and upward, the locking pawl 22a disengages from the locking hole 26 of the locking body 24, and when the depression is stopped, the main clutch returns to its original "on" state. The seedling planting work will then resume.

As mentioned above, since this device has the above-mentioned configuration, when the clutch is brought into the "disengaged" state by depressing the pedal, and the clutch is held in that state, force is applied to the front side of the pedal as in the conventional device. Even if you step on the back of the pedal from the beginning, the engaging pawl of the hook member will not release the spring even if it comes into contact with the wall of the locking body, without having to perform a complicated stepping operation such as applying force to the side to rotate the petal. Due to the bending action, it can move along the wall surface and become properly locked. Therefore, it is possible to perform an operation of pressing the pedal down very easily, and yet to perform an accurate "disengage" operation of the clutch.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main part of the conventional device, Fig. 2 is a partially sectional side view showing an embodiment of the present invention, Fig. 3 is a side sectional view of the main part, and Fig. 4 is the main part. front view,
FIG. 5 is a rear view of the main part, and FIGS. 6 to 9 are side views of the main part showing the operating state. Symbols in the diagram: 1 is a vehicle, 12 is a step stand, 15
is the clutch arm, 18 is the bracket, 19 is the petal, 21 is the pin, 22 is the hook member, 22a is the locking pawl, 23 is the spring, 24 is the locking body, A is the rear part of the hook member, B is the rear of the petal A and C indicate the front part of the hook member, and D indicates the front part of the petal.

Claims (1)

[Scope of utility model registration request] A bracket is integrally fixed to the tip of a clutch arm that is linked to a clutch whose base side is pivoted at a proper location under the step table and whose tip side is provided to be biased and protrudes above the step table, and a pin is attached to this bracket. A pedal is rotatably provided through the pedal, and the lower front side of the pedal is configured to restrict downward rotation by the upper front side of the bracket, and a hook member having a locking claw on the pin is rotatably provided. A spring is interposed between the hook member and the petal to spread out the rear sides of the two and connect the front parts in a normal state, and a spring is provided under the step base to step on the rear upper part of the petal. An operating device for a vehicle clutch comprising a locking body that engages a locking pawl of a hook member when the clutch is engaged.