JPS6336830Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a seat for a vehicle in which a person is seated to perform steering operations and operate levers, etc. of a working machine attached to the aircraft body.

Seats in general vehicles are cushioned separately by inserting springs in only the seat or only the backrest, but this makes the structure complicated and expensive, and it is not possible to use springs of standard strength to cushion the seats. The backrest has the disadvantage that it feels stiff for small and light people, and too soft and unstable for large and heavy people.Also, the control lever of the work equipment is located at the back of the seat. When reaching backwards to operate the lever, the backrest gets in the way and makes it difficult to operate the lever, which is especially difficult for small people.

Although the present invention has a simple structure and can be obtained at low cost, it fits well regardless of body shape and allows even small people to operate the levers and other operating tools at the rear extremely easily. In a work vehicle that is intended to provide a seat for a work vehicle, and is equipped with a seat consisting of a seat and a backrest on the body of the work vehicle, the front part of the seat is pivotally supported so as to be movable up and down, and the backrest is attached to the backrest. The lower part of the supporting member is bent and pivoted so as to be rotatable back and forth, and a spring is interposed between the lower rear surface of the seat and the bent part of the lower part of the supporting member. .

The embodiments shown in the drawings will be explained below.
Figure 1 shows a four-wheel drive tractor, with an engine 2 mounted on the front of the machine body 1, and a control section consisting of a handle 3, a brake pedal, a clutch pedal 4,
It is composed of various operating levers 5, seats 6, etc., and various working machines are attached to the rear, although not shown.

The seat 6 consists of a seat 7 and a backrest 8, as shown in FIG. The support member 12 of the backrest 8 has an inverted U-shape when viewed from the rear, with its lower part facing forward. The corner part 12a is bent, and the support metal 13 installed on the fuselage 1,
13, the bent portions 12b, 1 are pivotally supported by fulcrum pins 14, 14 so as to be rotatable back and forth, and extend toward the front.
Winding springs 15, 15 are interposed between 2b and the rear lower surface of the seat 7.

Further, the bent portions 12b, 12 of the support member 12
A cushion 16, 16 made of soft rubber and having a cavity opened downward at the center is joined to the lower surface of b.
In this case, the bolt 17 and nut 18 are more integrally fastened.

When the operator takes a seat on the seat 6, the winding springs 15, 15 are compressed according to the weight of the operator, and the cushions 16, 16 are pressed against the receiving plate 1.
9 and 19.

At that time, if the strength of the coiled springs 15, 15 is set to suit a person of normal weight,
When a light operator is seated, the amount of compression of the winding springs 15, 15 is small as shown in FIG. Moreover, when a heavy operator takes a seat, the winding springs 15, 15 are greatly compressed as shown in FIG. There is no.

Furthermore, when the operator raises his hips slightly, turns back, and extends his hand while putting his weight on the backrest 8 to operate the operating lever or other operating member of the work equipment attached to the rear of the aircraft 1, the winding occurs. As the load on the springs 15, 15 decreases, at the same time the force pushing the backrest increases, the rear part of the seat 7 lifts up and the backrest tilts backward from the state shown in Figure 3c, as shown in d. , operating levers, etc. can be easily operated.

As mentioned above, the present invention is applied to a work vehicle equipped with a seat consisting of a seat and a backrest on the body.
The front part of the seat is pivotally supported so as to be vertically movable, the lower part of the support member of the backrest is bent and pivotally supported so as to be rotatable back and forth, and the bent part of the rear lower surface of the seat and the lower part of the support member is provided. Since the spring is interposed between the seat and the backrest, the spring interposed between them can serve as a buffer for the seat and the backrest, and the structure can be simple and inexpensive.

Moreover, by simply selecting the springs to be suitable for a person of a standard weight, the backrest will operate so that it feels soft for a person of light weight, and will adjust to the weight of a person of a heavy weight. It provides support with a corresponding sense of stability, and provides a comfortable seat regardless of your weight.

Furthermore, when operating the operating members at the rear of the aircraft, if the pilot assumes a rearward operating position, the rear of the seat tends to lift up and the backrest easily tilts backwards. The operability is significantly improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a side view of the tractor, FIG. 2 is a side view of the seat and its support, and FIGS. 3a, b, c, and d are operational views. 1... Aircraft, 6... Seat, 7... Seat, 8...
...backrest, 11, 14... fulcrum pin, 12... support member, 15... winding spring.

Claims (1)

[Scope of utility model registration request] In a work vehicle in which a seat consisting of a seat and a backrest is mounted on the body, the front part of the seat is pivotally supported so as to be movable up and down, and the lower part of the support member of the backrest can be bent and rotated back and forth. What is claimed is: 1. A seat for a work vehicle, characterized in that the seat is pivotally supported on the seat, and a spring is interposed between the rear lower surface of the seat and a bent portion at the bottom of the support member.