JPH0528093Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an accelerator operating device.

(Prior art) As an accelerator operating device, for example,
- There is a device shown in Publication No. 47839, in which a relay lever that interlocks with a speed adjustment lever and a hand accelerator lever that has an interlocking body that rotates together are rotatably provided on the vehicle body, and the relay lever and the interlocking body are rotatably provided. are interlocked and connected via a hand accelerator rod.

By the way, the speed increasing direction of the hand accelerator lever is the opposite in Japan and in foreign countries.In Japan, the direction in which the hand accelerator lever is pulled toward you is the direction in which the speed increases; In this case, the direction in which the hand accelerator lever is pressed is the speed increasing direction.

Therefore, when producing tractors for Japanese and foreign markets, the acceleration directions of the hand accelerator levers must be set in opposite directions. By changing the members of the accelerator device, the acceleration direction of the hand accelerator lever can be set respectively.

(Problems to be Solved by the Invention) For this reason, a large number of types of members had to be prepared, which was undesirable from the viewpoint of production efficiency and cost reduction.

An object of the present invention is to provide an accelerator operating device that can solve the above problems.

(Means for Solving the Problems) The present invention includes a speed adjustment lever 1 and a hand accelerator lever 25 spaced apart from each other at the front and rear of the vehicle body 1, and which are rotated in the front and rear directions about a rotation axis 29 as a fulcrum. a hand accelerator rod 22 that interlocks and connects the hand accelerator lever 25 and the speed adjustment lever 1;
In this accelerator operating device, which controls the speed adjustment lever 1 in the increasing/decelerating direction by operating the hand accelerator lever 25 in the longitudinal direction, the following technical measures are taken to achieve the above-mentioned object.

That is, in the present invention, the hand accelerator lever 25 is provided with an interlocking body 26 that rotates together with the hand accelerator lever 25, and one end of the same hand accelerator rod 22 is selectively connected to the hand accelerator lever 25. Interlocking parts 27 and 28 for selecting the direction of increase or decrease are formed on the interlocking body 26 at vertical positions on the circumference around the rotation axis 29 of the hand accelerator lever 25.

(Function) The same hand accelerator rod 22 is connected to the interlocking body 26.
selectively connected to one of the interlocking parts 27 and 28,
By this selection, the speed increasing direction of the hand accelerator lever 25 is selected.

(Embodiment) Hereinafter, an embodiment in which the present invention is applied to a tractor will be described based on the drawing of FIG. .

Reference numeral 3 denotes an interlocking lever, which is located behind the speed adjustment lever 1, is rotatably supported on the vehicle body 4 by a left-right support shaft 5, and is interlocked and connected to the speed adjustment lever 1 via an interlocking accelerator rod 6. There is.

At the rear of the interlocking accelerator rod 6, a double nut 8, a sleeve 9, a coil spring 10, and a double nut 11 are fitted and connected in the above order toward the rear.
The sleeve 9 is brought into contact with the double nut 8 by the bias of a spring 10.

The rear part of the sleeve 9 is connected to the interlocking lever 3 by a support shaft 13, and a foot axel rod 14 is connected to this support shaft 13.

A foot accelerator pedal 15 is provided on a step 16 fixed to the vehicle body 4 so as to be freely depressed, and is interlocked with the foot accelerator rod 14. 1
7 is a return spring.

Reference numerals 19 and 20 denote inner and outer relay levers, the inner relay lever 19 is fixed to the inner end of the support shaft 5, the outer relay lever 20 is fixed to the outer end of the support shaft 5,
Both the inner and outer relay levers 19 and 20 are rotatable together with the support shaft 5.

The interlocking lever 3 is located between the inner and outer relay levers 19 and 20, and the outer relay lever 20 has an engaging portion 21 formed at its tip that engages with the upper surface of the interlocking lever 3. A front end portion of a hand accelerator rod 22 is separably inserted and connected to 19.

24 is a bracket installed on the vehicle body 4;
A hand accelerator lever 25 is provided on the bracket 24, located behind the outer relay levers 19, 20, in an upright manner so as to be rotatable around an axis 29 in the left-right direction.

The hand accelerator lever 25 is held at a desired rotational position by a disk spring (not shown), and the hand accelerator lever 25 is provided with an interlocking body 26 that projects forward and rotates together with the lever 25. . Note that the interlocking body 26 is the hand accelerator lever 2.
In some cases, it is provided integrally with 5, and in other cases it is not.

The interlocking body 26 has a pair of upper and lower interlocking parts 27 and 28 that protrude forward and are located on the circumference (including the same circumference and different circumferences) around the rotation axis 29 of the hand accelerator lever 25, and are arranged on the upper and lower sides. formed in position,
One end of the same hand accelerator rod 22 is selectively and removably inserted and connected to one of these interlocking parts 27, 28.

Reference numeral 30 denotes a stopper that protrudes outward from the bracket 24 and stops both the interlocking parts 27 and 28 of the interlocking body 26.
The rotation range of the hand accelerator lever 25 is limited within a predetermined range.

According to the embodiment configured as described above, in the case of a tractor for use in Japan, the hand accelerator rod 22 is interlocked and connected to the upper interlocking part 27 of the interlocking body 26, as shown by the solid line in FIG.

As a result, when the hand accelerator lever 25 is pulled forward, the inner relay lever 19 rotates rearward via the upper interlocking part 27 of the interlocking body 26 and the hand accelerator rod 22.

As a result, the external relay lever 2
0, the interlocking lever 3 rotates rearward, and due to this rotation, the sleeve 9, the spring 10, and the double nut 11
, the interlocking accelerator rod 6 is pulled rearward, and the speed adjustment lever 1 is rotated rearward.

This rotation causes the speed adjustment shaft 2 to rotate, and the speed of the engine is increased.

In the case of a foreign tractor, the hand accelerator rod 22 is interlocked and connected to the lower interlocking part 28 of the interlocking body 26, as shown by the imaginary line in FIG.

As a result, when the hand accelerator lever 25 is pushed forward, the inner relay lever 19 is
is rotated rearward, and the engine speed is increased in the same manner as above.

Also, in any of the above cases, if the foot accelerator pedal 15 is depressed, the foot accelerator pedal 15
The interlocking lever 3 is rotated rearward via the lever 3 to increase the speed of the engine, without causing any trouble to the hand accelerator operation system.

FIG. 2 shows a different safety cover from the present invention, in which a safety cover 32 is divided into two parts, upper and lower covers 33 and 34, which are separably integrated by bolts 35.

Fig. 3 shows a work machine stopping device different from the present invention, in which a work machine such as a rotary tiller is provided behind the tractor so that it can be raised and lowered freely by a hydraulic system for raising and lowering the work machine, and the tractor's PTO clutch is The PTO system and the input shaft of the work machine are interlocked and connected.

Reference numeral 37 denotes a PTO clutch lever, which is provided on the vehicle body 4 via a support shaft 38 so as to be movable up and down.The lower rotational position shown by the solid line in FIG. The upper rotation position shown is
This is the PTO clutch connection position.

38 is an L-shaped intermediate lever, which is attached to the vehicle body 4 with a support shaft 40.
It is rotatably supported by and is operatively connected to the PTO clutch lever 37 via an interlocking rod 41, and operatively connected to the PTO clutch via an interlocking rod 42.

Reference numeral 43 denotes a hydraulic control lever, which controls the hydraulic system for lifting and lowering the work machine, and is rotatably provided on the vehicle body 4 by a support shaft 44, and the position shown by the solid line in FIG. 3 is the work machine lowering position. , the position shown by the imaginary line in FIG. 3 is the working machine raised position.

Reference numeral 45 denotes an intermediate lever, which is rotatably provided on the vehicle body 4 by a support shaft 46, and is interlockingly connected to the hydraulic control lever 43 via an interlocking rod 47, and also interlockingly connected to an actuating rod 48.

The actuating rod 48 is held at the intermediate portion of the vehicle body 4, and is provided with a pair of projecting pins 49 at its distal end that protrude outward when the hydraulic control lever 43 is gripped and grip the intermediate lever 39. There is.

Therefore, by rotating the hydraulic control lever 43 between the work implement lowering position and the work implement raising position,
The PTO clutch lever 37 rotates between the PTO clutch connection position and the PTO clutch disconnection position,
The PTO clutch is switched between the connected and disconnected positions.

Furthermore, when the hydraulic control lever 43 is not operated, the protruding pin 49 is located on the inner side of the intermediate lever 39, so the PTO clutch lever 37 can be operated independently of the hydraulic control lever 43.

Note that the protruding pin 49 is connected to the actuating rod 4 via a spring.
8, and an inclined cam surface is formed on the surface opposite to the facing surface of both protruding pins 49.

Therefore, for example, with the intermediate lever 39 in the position shown by the phantom line in FIG. 3 and the protruding pin 49 of the actuating rod 48 in the position shown by the solid line in FIG.
When the hydraulic control lever 43 is rotated to the working machine raised position shown in the imaginary line in FIG.
9 hits the intermediate lever 39, but the rear protruding pin 49
is retreated inward due to the action of the cam surface and spring,
This does not impede the rotation of the hydraulic control lever 43.

(Effects of the invention) As detailed above, according to the invention, the accelerating direction of the hand accelerator lever can be freely selected to one of the rotating directions without changing the members of the accelerator device. Even when producing domestic and foreign tractors, there is no negative impact on production efficiency or costs. The present invention has the above advantages and is of great practical benefit.

[Brief explanation of drawings]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a perspective view of the safety cover, and FIG. 3 is an explanatory view showing the work machine stop device. 1...Speed adjustment lever, 4...Vehicle body, 22...
Hand accelerator rod, 25... hand accelerator lever, 26... interlocking body, 27, 28... upper/lower interlocking section.

Claims (1)

[Scope of claim for utility model registration] Speed adjustment lever 1 and hand accelerator lever 25
are provided spaced apart at the front and rear of the vehicle body 1, and the rotation axis 29
A hand accelerator rod 22 is provided which interlocks and connects the speed adjusting lever 1 with the hand accelerator lever 25, which is rotatably operated in the front and back direction about In the accelerator operation device for controlling in the acceleration/deceleration direction, the hand accelerator lever 25 is provided with an interlocking body 26 that rotates together with the hand accelerator lever 25, one end of the same hand accelerator rod 22 is selectively connected to the Interlocking unit 2 in which the increasing/decreasing direction of the hand accelerator lever 25 is selected by selection
7 and 28 are formed on the interlocking body 26 at vertical positions on a circumference centered on the rotation axis 29 of the hand accelerator lever 25.