JPS6316623Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention relates to a work bicycle that can be ridden stably in order to perform vineyard or other agricultural work while seated and facing upward.

(Conventional techniques and problems) Traditionally, agricultural work such as removing kernels or hanging hats in a vineyard is done in a standing position and facing upwards, which is extremely hard work and not only causes occupational diseases.
Shorter workers must use auxiliary equipment, such as wearing clogs or carrying a table (in the case of a table, they have to climb up and down from the table each time they move), which increases the level of fatigue. , and also contributed to a decline in efficiency.

(Means for solving the problem) However, this idea was designed to sit on three stable wheels,
In addition, it is possible to work in an upward position and move forward without coming down to the ground by operating the pedals, which not only makes the working posture more comfortable, but also improves efficiency and solves the problems of the conventional method. That is, this invention is a tricycle that has one front wheel and two rear wheels attached to a frame, and is equipped with a foot pedal and a brake.The idea is to provide a footrest on the top of the front wheel frame that works with the saddle to maintain an upward posture. In addition, a working bicycle is constructed in which a saddle is provided with a rising edge for supporting the waist that wraps around the bottom part of the frame of the rear wheel, and is movable up and down and installed at a variable angle. The saddle described above has a rising edge that wraps around the lower part to stably support the lower back of the worker, and it is more convenient for the foot pedal to have a latch piece attached to the step for forward and backward operations. Furthermore, if the brakes can be restrained, the stability during work will be better, and the bicycle will not move automatically, especially when working on slopes, and the bicycle will be held in place more reliably.

(Function) Since the saddle of this invention can be raised and lowered, the height during work can be adjusted appropriately. In addition, by operating the pedals, the worker can freely move the bicycle forward and backward without having to go down to the ground. In addition, when the worker sits on the saddle and puts his or her feet on the footrest, the worker naturally assumes a diagonally upward working posture, which can be expected to have various effects, such as stabilizing the working posture.

(Example) That is, to explain this invention in terms of an example, the front wheel 3 is connected to the lower part of one side of the frame 1 via the front fork 2.
At the same time, a handle 5 is connected above it via a head pipe 4. A support shaft 7 is horizontally mounted on the other side of the frame 1 parallel to the shaft 6 of the front wheel 3, and rear wheels 8, 8a are attached to both ends of the support shaft 7.
A saddle 10 is attached to the upper end of a vertical pipe 9 close to the other side of the frame 1 so as to be movable up and down. The saddle 10 is constructed by attaching the upper end of a support rod 12 to the lower surface of a deep seat 11 having a rising edge with a rear peripheral edge raised obliquely, inserting the support rod 12 into the vertical pipe 9, and tightening the set screw 24 Fixed and adjustable in height. The deep seat 11 is intended to support the worker's lower back and lower back during work, stabilize the work posture, and reduce fatigue, so that the worker can continue working as is. It is preferable to have a shape that allows you to maintain a calm posture. Therefore, the mounting ring 13 is loosely fitted to the end of the support rod 12 on the lower surface of the deep seat 1, and the pin 14
When rotating, the lower edge of the mounting fitting 13 acts as a stopper to restrict the rotation of the deep seat 11 to a small angle (for example, 30 degrees). A footrest 15 is installed horizontally on the head pipe 4. The footrest 15 is for the worker to place his or her feet on.
It may be either frame-shaped or plate-shaped, or it may be made into two on the left and right as shown in FIG. 4, so that it can be rotated and folded toward the frame side as shown by the arrow 16 in the figure.

Further, a gear 18 is fixed to a gear shaft 17 at the lower center of the frame, and a chain 20 is installed between it and a gear 19 fixed to the support shaft 7 of the rear wheels 8, 8a. crank 21,
The base end of 21a is fixed, and a petal consisting of a step piece 22 and a hook piece 23 is attached to the tips of the cranks 21, 21a. This petal is designed so that the work vehicle can be moved forward and backward with one foot, so that the foot and the petal can be engaged, but the structure is not limited to this.

A brake lever 25 is attached to the grip portion 5a of the handle 5, and the brake lever 25 is connected to brakes 27, 27a via a wire 26. A locking ring 28 is rotatably attached to the grip portion 5a (FIG. 6), so that the brake lever 25 can be locked in the activated state. Therefore, it is possible to work with the brake applied.
Further, in the above embodiment, the deep seat 11 is configured to be able to tilt by a small angle, but it is of course possible to adopt a shape structure that can achieve the purpose without tilting, depending on the situation and specific structure. It's not limited either.

(Advantages of the device) In other words, this device provides a foot rest and a saddle for supporting the waist on the tricycle, which allows the worker to work in a diagonally upward position, and allows the worker to work at a height that suits his/her height. This improves work efficiency (e.g., there is no need to climb up and down the platform).
At the same time, it has a great practical effect of reducing fatigue of the worker. Also, the lumbar support saddle has a raised edge, so that the lower back of the worker can be stably supported.

[Brief explanation of the drawing]

Figure 1 is a front view of an embodiment of this invention, Figure 2 is a plan view, Figure 3 is an enlarged partial cross-sectional view showing an example of mounting a saddle, and Figure 4 is a partial view showing an example of a footrest. FIG. 5 is an enlarged view showing how the brake lever is engaged and removed, and FIG. 6 is a partially enlarged view showing an example of the pedal. 1... Frame, 2... Front fork, 3... Front wheel, 5... Handle, 7... Support shaft, 8, 8a...
Rear wheel, 10...saddle, 11...deep seat, 15...
Foot rest, 25...brake lever.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a tricycle that has one front wheel and two rear wheels attached to a frame and is equipped with a foot pedal and a brake, the front wheel is attached to the top of the frame in cooperation with the saddle to maintain an upward posture. In addition to providing a footrest,
This work bicycle has a saddle that can be raised and lowered and has a raised edge for supporting the waist that wraps around the bottom of the rear wheel frame, and is installed at a variable angle. 2. The work bicycle according to claim 1, wherein the foot pedal is composed of a step piece and a latch piece. 3. The work bicycle according to claim 1, wherein the brake is connected to a brake lever that can be restrained.