JPH0514935Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hand-pushed unicycle used for civil engineering work, agriculture, gardening, etc.

[Conventional technology]

As disclosed in Japanese Utility Model Application Publication No. 58-95364, a hand-held unicycle commonly used for agriculture, horticulture, and civil engineering and construction work consists of two main body frames with handles protruding from one end, and a bucket cart with the required volume. Equipped with
A wheel is provided protruding from the lower end of the frame on the opposite side from the handle, and the load on the bucket is supported by this single wheel, so that the bucket can be transported by holding the handle. Further, in order to reinforce the periphery of the bucket, a pipe material is placed around the bucket, and the periphery of the bucket is bent and wrapped around the reinforcing pipe material to form an integral piece.

Furthermore, the frame to which the wheels are attached is manufactured separately from the main body frame, and its base end is simply welded to the main body frame, so its strength is low. To reinforce this, one or two stays are vertically installed and welded between the front end of the wheel mounting frame and the main body frame. In addition, to install the bucket, place the bucket on the lower reinforcing crosspiece placed on the main body frame, and secure it to the bottom of the bucket with screws.

[The problem that the idea attempts to solve]

Conventional push unicycles have many welded parts because each member is fixed and reinforced by welding, which increases the product cost. In addition, the main body frame and the bucket are assembled and shipped as one unit at a factory, so they are bulky and expensive to transport and store.

In this invention, the main body frame, the reinforcing frame disposed at the front part of the main body frame, the bucket bag, and the wheels are assembled, and the purpose is to reduce the bulk for transportation and storage, and to maintain the specified strength.

[Means to solve the problem]

The present invention was made to achieve the above object, and the main body frame is formed by bending a pipe material into a U-shape, and the lower surface of the bent part is placed at a position slightly larger than the radius of the wheel from the tip of the bent part. , two wheel mounting tubes are welded so that their respective axes are aligned in a straight line, and the axle inserted between the bent pieces is installed by penetrating into the opposing axle mounting tube, and the bucket mounting position of the main body frame is A bucket mounting rod is welded to the main body frame, and the periphery of the opening is bent outward and reinforced as a double layer, and this periphery is placed on the bucket mounting rod and reinforcing frame provided on the main body frame to be used as a mounting piece. The gist is that it consists of a bucket and a reinforcing frame that is screwed along the periphery of the front end of the bucket and whose lower end penetrates the axle mounting tube and is attached to the axle that supports the wheel. This makes it easy to assemble and reduces bulk during transportation and storage.

[Effect]

Main body frame, front reinforcement frame, bucket,
The wheels are made to be of an assembled type, so that each part can be transported in a disassembled state and assembled as required at a dealer, etc. This reduces the bulk during transport and storage, and greatly reduces the cost of transport, etc., compared to the conventional method.

〔Example〕

The present invention will be explained below based on embodiments shown in the drawings.

Fig. 1 is an external view showing only the main body frame with the bucket removed. 1 is the main body frame of the hand-powered unicycle, which is bent into a U-shape with a pipe material having a desired diameter and length. Both ends are made to be slightly wider than the bent portion 1C, and these ends are used as handles, and the grip 2 is fitted into the handles. A reinforcing stay 3 is provided between each piece 1A, 1B of this U-shaped body frame which is installed opposite to each other.
One or more of these are horizontally welded, but the structure of the main body frame 1 and stay 3 is the same as the conventional product.

In addition, a bucket mounting rod 4 is installed on the main body frame 1 at the rear end position of the bucket 6 at the bucket mounting position, and the bucket 6 is placed on the main frame.
is fixed to this bucket mounting rod with screws or bolts 7. The bottom of the bucket bag 6 is supported by a stay 3, and a leg frame 5 is provided protruding from the lower part of the main body frame 1.

The leg frame 5 is bent into a U-shape using an angle material. At this time, one piece of the angle material is made to be a flat surface along the outer circumferential surface that is bent into the U-shape, and when the leg frame touches the ground. This bent portion 52
The flat pieces of the leg frames are bent 51 outward in a dogleg shape at both ends so that when the main body frames 1, 1 are stacked one on top of the other, the main bodies that are adjacent to each other on the upper and lower sides The frames are combined so that the leg frames straddle them. In addition, both ends of this leg frame are brought into contact with the main body frame made of pipe material, and in order to ensure this welding, the ends of the leg frame are cut into an arc shape that closely follows the pipe material of the main body frame. At the contact position, both the front and back sides of the angle material of this leg frame are welded to the pipe material, thereby increasing the strength compared to conventional welding of the leg frame using pipe material.

The wheels 8 are attached at the U-shaped bent portion 1C of the main body frame 1. At the U-shaped bent end portion of the main body frame, the U-shaped bend is made as shown in FIGS. 1 to 3. Weld the axle mounting tubes 9, 9 to the lower surfaces of these two opposing pieces 1W, 1W, respectively, at a position slightly larger than the radius of the wheel from the tip of the section, with the axes aligned in a straight line. Protrudes in the direction intersecting 1W.

The axle 10 passes through the two wheel mounting tubes 9, 9 facing each other so that the axis is in a straight line, and the axle 10 also has two wheel mounting tubes 9,
A desired wheel 8 is rotatably supported between 9. The axle 10 is shaped like a bolt, and a nut 11 is screwed onto the tip of the axle 10, so that the wheel 8 can be freely rotated and attached to the main body frame via the axle and the wheel mounting tube.

The bucket 6 has the required internal capacity to be mounted and supported on the main body frame 1, and its outer periphery is folded outward and downward to form a double layer to reinforce the periphery of the bucket, and the rear periphery 61 of the bucket is attached to the bucket. It is placed on the rod 4 and fixed between the mounting rod 4 and the peripheral edge 61 using screws or bolt nuts 7. Further, the front end periphery 61 of this bucket bag 6 is formed into a semicircular arc shape, a reinforcing frame 13 made of pipe material bent in a U-shape is applied to this front end periphery, and the front end periphery and the reinforcing frame are fixed with screws.
One or two reinforcing stays 14, 14 are provided protruding from the lower surface of this reinforcing frame 13, and these stays 14,
A locking plate 15 is provided at the lower end of the bucket 14, into which an axle is fitted and secured by tightening a nut, thereby reinforcing the front end of the bucket and the wheel mounting portion.

The main body frame 1 is U-shaped when viewed from above so that a bucket can be mounted thereon, but when viewed from the side, it is bent into a crank shape.

Each of the parts constructed as described above is the same, for example, the main body frame alone is stacked in a multi-tiered manner for transportation or storage. At this time, the main body frame is bent and formed using pipe material, the leg frames are formed from angle material, and the upper part of this leg frame is bent outward, so that the stacked main body frames are combined with each other. Since it is constructed as follows, even if a large number of them are piled up, they are not bulky. Also, since the buckets are fitted together, they are low in bulk. Furthermore, since reinforcing frames of the same shape are stacked one on top of the other, it becomes less bulky.

Next, the assembly of the unicycle from each part will be explained.

Insert the wheel 8 into the U-shaped bent portion 1C of the main body frame 1, align the engagement plates 15, 15 of the reinforcing frame with the outer surfaces of the wheel attachment tubes 9, and attach the attachment plates 15 and the wheel attachment tubes. 9. A bolt-like axle 10 is passed through the wheel 8, and a nut is screwed onto it to support the wheel rotatably. Next, the bucket is mounted on the main body frame, and the rear edge of the bucket is fixed to the bucket mounting rod, and the front edge of the bucket is fixed to the reinforcing frame with screws.

[Effect of idea]

According to the present invention, the main body frame, reinforcing frame, bucket, and wheels are assembled using bolt-like axles and screws, so each part can be stacked on top of each other during storage and transportation, which reduces the transportation cost. The axle is bolt-shaped and fits into the axle mounting tube that protrudes from the main body frame, making it easy and secure to install the wheel. It can also be fixed. Furthermore, since the periphery of the bucket is double-folded and used as a reinforcement and as a mounting piece for the bucket, there is no need to hold the periphery of the bucket in the reinforcing pipe as in the past, making it possible to manufacture it at a low cost. It has the advantage that the bucket mounting rod and reinforcing frame can be easily attached.

[Brief explanation of drawings]

FIG. 1 is an external view of the main body frame, FIG. 2 is a plan view, FIG. 3 is a front view of the bucket belt attached, and FIG. 4 is an explanatory view of the reinforcing frame. 1 is the main body frame, 2 is the handle grip,
3 is a stay, 4 is a bucket mounting rod, 5 is a leg frame, 6 is a bucket, 8 is a wheel, 9 is a wheel mounting tube,
10 is an axle, 13 is a reinforcing frame, and 14 is a reinforcing stay.

Claims (1)

[Scope of utility model registration request] The main body frame is formed by bending pipe material into a U-shape, and two axles are attached to the lower surface of the bent part at a position slightly larger than the radius of the wheel from the tip of this bent part, so that the respective axes are aligned in a straight line. Welding the cylinder, passing through and attaching the axle of the wheel inserted between the bent pieces into the opposing axle mounting cylinder, and welding the bucket mounting rod to the bucket mounting position of the main body frame,
This main body frame, a bucket whose opening periphery is bent outward and reinforced as a double layer, and which is used as a mounting piece by placing this peripheral edge on the bucket mounting rod and reinforcing frame provided on the main body frame, A push unicycle that can be assembled by having a reinforcing frame that is aligned and fixed with screws, and whose lower end passes through an axle mounting tube and is attached to an axle that supports the wheel.