JPS6031939Y2 - Clutch pedal fixing device for agricultural tractors - Google Patents

Description

[Detailed description of the invention] The present invention is related to the clutch pedal part of an agricultural tractor.

If the clutch of an agricultural tractor is left connected for a long period of time when the tractor is not in use, the clutch facing may become compressed by rust, muddy water, etc.

If the driver were to start the engine for the first time in a while without noticing this condition, the force of the clutch spring would release the facing even if the clutch pedal was depressed, resulting in a sudden start and a serious accident.

In order to eliminate these problems, a clutch pedal fixing lever was introduced to keep the clutch pedal in the depressed state during long-term storage.

However, conventional clutch pedal fixed operation levers are often made of plates, etc., and they become deformed or cracked, making them difficult to operate. It didn't move very well, and the pilot found it troublesome to use.

The present invention provides a clutch pedal fixing operation lever with a shape that is easy to use and a part that is easy to process.

The purpose of the present invention is as described above, and the structure of the present invention will be explained based on the configuration of the embodiment shown in the attached drawings. Fig. 1 is an overall side view of the tractor.

The power of the engine 14 is connected and disconnected by a clutch housing 6 fixed to the rear surface of the engine 14, and is transmitted to a transmission case 13 at the rear of the clutch housing.

Pedals are provided on both sides of the clutch housing 6, two left and right brake pedals are provided on the right side, and a clutch pedal 4 is provided on the left side.

The present invention relates to the fixed operating lever of the clutch pedal 4.

FIG. 2 is a diagram showing the clutch pedal fixing operation lever of the present invention.

A foot surface 5 is provided at the upper end of the clutch pedal 4, and a link 8 is fixedly attached to the lower end via a pivot pin 15.

A connecting rod 9 extends forward from the link 8, and the connecting rod 9
is connected to the clutch release spring 10.

A bullet 7 is provided at the rear of the link 8, and the rear of the bullet 7 is hooked to a step 12.

The pedal stopper 2 serves to stop the rotation of the pedal 4 to prevent it from being depressed too much and damaging a clutch release bearing (not shown) in the clutch housing.

The back surface of the foot surface 5 of the clutch pedal 4 is brought into contact with the stopper surface 2a to stop the clutch pedal.

A clutch pedal fixing operation lever 1 having a pivot point 1c in a part of the pedal stopper 2 is composed of a plate body,
It is rotatably supported.

7 is a spring for returning the clutch pedal 4, 5 is a foot surface of the clutch pedal 4, and 1b is an engaging portion of the clutch pedal fixing operation lever 1.

FIG. 3 is a side view of another embodiment of the clutch pedal fixing operation lever of the present invention.

FIG. 4 is a plan view showing the clutch pedal and clutch housing section.

FIG. 5 is an enlarged view of the clutch pedal fixing operation lever.

The clutch pedal fixing operation lever 1 is constructed of a rod-shaped body, unlike a plate-shaped one.

In the embodiment shown in Fig. 2, the engagement was made by a surface, but the engagement was made into a bar by a line or a point to prevent an increase in frictional force due to twisting.

The clutch pedal fixing operation lever 1 has its base pivotally connected to a pin 3, and is configured to rotate at a position away from the clutch housing mounting surface of the pedal stopper.

This makes it easier for the operator to insert his/her arms and fingers into the device.

Further, a curved portion 1c is formed on the rod-shaped body, the surface 1b is used as an engaging portion, and the tip of the retaining portion 1b is bent to form a finger hook portion 1a.

In FIG. 3, 6 is a stopper for upward rotation of the clutch pedal 6, which is disposed from the elastic body.

Reference numeral 11 is a link for operating the inertial slip prevention brake of the power shift transmission.

As described above, the present invention replaces the clutch pedal fixing operation lever 1, which maintains the clutch pedal 4 in a depressed state, with the pedal stopper 2, which prevents the clutch pedal 4 from being depressed beyond a certain distance, when the agricultural tractor is stored for a long period of time. Because it was supported by a central branch, the following effects were achieved.

First, since a pivot point IC is provided in a part of the pedal stopper 2 to support it rotatably, there is no need to separately provide a pivot shaft or a hole for a pivot pin in the transmission case 13.

Second, when assembling the clutch pedal fixing operation lever 1, it can be assembled to the pedal stopper 2 as a mechanism before assembling it to the transmission case, and if it is assembled integrally to the transmission case after the mechanism is assembled, the number of assembly steps can be reduced. That's what happens.

Thirdly, after the clutch pedal 4 is depressed until it contacts the pedal stopper 2, the clutch pedal fixing operation lever 1 is rotated to the locking position and engaged. The pedal fixing operation lever 1 must have an accurate gap at the engaged position,
By integrally supporting the clutch pedal fixing operating lever 1 and the pedal stopper 2 as in the present invention, it is possible to reliably maintain a constant gap between the two.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the tractor, Fig. 2 is a side view of the clutch housing showing a conventional clutch pedal fixing operation section, Fig. 3 is a side view of the clutch housing showing the device of the present invention, and Fig. 4 is a clutch A plan view showing the pedal and the clutch housing, and FIG. 5 is an enlarged view of the clutch pedal fixing operation lever. 1...Clutch pedal fixing operation lever, 2...
...Pedal stopper, 3...Pivot pin,
4...Clutch pedal, 5...Tread surface.

Claims (1)

[Scope of utility model registration request] When storing the agricultural tractor for a long period of time, the clutch pedal 4
Clutch pedal fixed operation lever 1 that maintains the pedal in the depressed state
A clutch pedal fixing device for an agricultural tractor, characterized in that a pedal stopper 2 that prevents the clutch pedal 4 from being depressed beyond a certain distance is supported by a pivot part.