JP2022035557A - Chair for farm work - Google Patents

Abstract

To provide a chair for farm work, capable of easily inclining according to the body weight movement of a worker.SOLUTION: A chair 80 for farm work securely grounds a central part and smoothly rotates due to that wheels 30 have a nearly long oval shape. With this, the chair 80 for farm work can smoothly move with a worker, and easily inclines in a direction in which the worker extends the hands far away. Consequently, a range of the reach of the hands of the worker is extended, and a work range in which the worker can work while being seated on the chair 80 for farm work is expanded, and load of the worker can be further reduced.SELECTED DRAWING: Figure 2

Description

The present invention relates to a chair for agricultural work used in agricultural work and the like.

Low-profile agricultural work chairs used for farming in fields have been commercialized. As such a chair for agricultural work, as described in the following [Patent Document 1], there are a chair having two wide columnar wheels in the front and rear, and a chair having four wheels. Then, the worker can reduce the work load of the middle waist and crouching by moving along the ridges and the like while sitting on the farm work chair and performing the farm work.

Jitsukaisho 63-177107

Here, when the worker reaches for a distant place or the like, weight shift occurs. However, since the invention described in [Patent Document 1] and the conventional four-wheeled agricultural work chair do not easily tilt, the worker needs to lift his / her waist each time.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chair for agricultural work that can be easily tilted according to the weight shift of a worker.

The present invention
(1) In an agricultural work chair having two front and rear wheels 30, a frame that pivotally supports the wheels 30, and a seat portion 32 installed above the frame.
The above-mentioned problem is solved by providing the agricultural work chair 80 characterized in that the wheel 30 exhibits a substantially ellipsoidal shape with a long axis as a rotation axis.
(2) The above problem is solved by providing the agricultural work chair 80 according to the above (1), wherein the flatness of the wheel 30 is 0.35 to 0.40.

In the agricultural work chair according to the present invention, since the wheels have a substantially ellipsoidal shape, when the worker reaches for a distance, the chair easily tilts in that direction. As a result, the reach of the worker is extended, the work range that can be performed while sitting on the agricultural work chair is expanded, and the burden on the worker can be reduced.

It is an external view of the chair for agricultural work which concerns on this invention. It is a perspective view of the chair for agricultural work which concerns on this invention. It is a figure explaining the use method of the agricultural work chair which concerns on this invention.

An embodiment of the agricultural work chair according to the present invention will be described with reference to the drawings. Here, FIG. 1 is a top view, a side view, a bottom view, and a front view of the agricultural work chair 80 according to the present invention, and FIG. 2 is a perspective view of the agricultural work chair 80 according to the present invention. The agricultural work chair 80 according to the present invention shown in FIGS. 1 and 2 has two front and rear wheels 30, a frame that pivotally supports the wheels 30, and a seat portion 32 installed above the frame. ing. The wheel 30 of the agricultural work chair 80 according to the present invention is characterized in that it exhibits a substantially ellipsoidal shape with a major axis as a rotation axis 34. As shown in FIGS. 1 and 2, it is preferable that both end portions (both pole portions of the long axis) of the wheel 30 are formed of a flat surface so that the wheel 30 can be easily supported by the rotating shaft 34. Further, if the flatness of the wheel 30 is too small, the stability is poor, and if it is too large, it becomes difficult to tilt when the body weight is transferred. Therefore, about 0.2 to 0.5 is preferable, and 0.35 to 0.40 is particularly preferable.

Further, the frame of the agricultural work chair 80 according to the present invention includes a seat surface frame 42 for fixing the seat portion 32 and side frames located on the left and right sides of the seat surface frame 42 and supporting the rotation shafts 34 of the front and rear wheels 30. It is preferable that the 40 is composed of a handle frame 44 which is bridged between the left and right side frames 40 and is provided in front of and behind the seat portion 32. The side frame 40 may have any shape such as U-shaped, T-shaped, H-shaped, U-shaped, Y-shaped, etc. as long as the rotating shafts 34 of the front and rear wheels 30 can be pivotally supported. As shown in FIGS. 1 and 2, it is preferable to use an inverted V-shaped wheel having an arcuate apex. When the side frame 40 has an inverted V shape having an arcuate apex, it is preferable that the handle frame 44 is erected diagonally upward from both end portions of the left and right side frames 40.

Next, a method of using the agricultural work chair 80 according to the present invention will be described. First, the agricultural work chair 80 according to the present invention is placed in a ridge, a work place, or the like on the agricultural land. Then, as shown in FIG. 3A, the worker sits on the seat 32 to perform the work. As a result, farm work can be performed while sitting, and the burden on the worker can be reduced. Further, since the wheel 30 of the agricultural work chair 80 according to the present invention is wide, it is stable, and the worker does not need to consciously balance and can concentrate on the work.

Further, when the worker moves along the ridge while sitting on the agricultural work chair 80, the wheel 30 rotates and the agricultural work chair 80 also moves along the ridge. As a result, the worker can continuously perform the farm work by moving the ridges while sitting on the farm work chair 80. For example, when the wheel has a cylindrical shape as described in [Patent Document 1], only the portions on both sides of the wheel touch the ground and the central portion floats depending on the inclination of the ridge groove or the like. In such a grounded state, the load is concentrated on both side portions of the wheel and the ridges and grooves are cut, so that the wheel does not rotate smoothly, and the operator may feel stress in movement. In this respect, since the wheel 30 of the agricultural work chair 80 according to the present invention has a substantially ellipsoidal shape, the central portion of the wheel 30 surely touches the ridge groove and rotates smoothly. As a result, the agricultural work chair 80 moves smoothly with the worker, and the worker does not feel stress.

Further, since the wheels 30 of the agricultural work chair 80 have a substantially ellipsoidal shape as described above and both sides are gently curved, when the worker moves his / her weight such as reaching a distance, the figure shows. As shown in 3 (b), it easily tilts in that direction. As a result, the reach of the worker is dramatically improved as compared with the conventional chair for agricultural work. As a result, the work range that the worker can perform while sitting on the agricultural work chair 80 is expanded, and the burden on the worker can be reduced.

As described above, in the agricultural work chair 80 according to the present invention, since the wheel 30 has a substantially ellipsoidal shape, the central portion of the chair 80 is surely grounded and smoothly rotates. As a result, the agricultural work chair 80 can move smoothly with the worker. Also, if the worker reaches for a distance, it easily tilts in that direction. As a result, the reach of the worker is extended, the work range that can be performed while sitting on the agricultural work chair 80 is expanded, and the burden on the worker can be further reduced.

Since the configuration, dimensions, design, etc. of each part of the agricultural work chair 80 and the frame shown above are examples, the present invention is not limited to the above examples, and the present invention does not deviate from the gist of the present invention. It can be changed and implemented.

30 wheels
32 seat
80 Agricultural work chair

Claims (2)

Two front and rear wheels and
The frame that supports the wheels and
In an agricultural work chair having a seat portion installed above the frame.
The wheel is a chair for agricultural work characterized in that it has a substantially ellipsoidal shape with a long axis as a rotation axis. The agricultural work chair according to claim 1, wherein the flatness of the wheel is 0.35 to 0.40.

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