JP3179525U - Positional relationship between frame, grip and wheel of 4-wheel carry cart - Google Patents

Abstract

There is provided a carry cart that can reduce a phenomenon that a four-wheel carry cart moves in an unintended direction of an operator, and can reduce a picking phenomenon, thereby allowing the carry cart to travel smoothly.
The carry cart is operated by making at least two of the rear wheels 16 stationary wheels that do not change direction, and by positioning the grip 18 at a position behind or in front of the position of the rear wheel 16. This prevents the cart from moving in a direction contrary to the intentions of the performer, and also prevents the carry cart from picking up.
[Selection] Figure 1

Description

  The present invention relates to a positional relationship between a frame, a grip, and a wheel of a four-wheel carry cart that smoothly moves on a road surface during travel, shopping, commuting, and the like.

  Conventionally, a number of four-wheel carry carts in which four wheels whose directions are freely changed are brought into contact with the road surface and the wheels are rotated to move parallel to the road surface have been used. This is shown in FIGS.

  In this type of carry cart, as shown in FIG. 2, the grip cart 21 that is generally an extension of the frame 22 is pushed in the direction intended by the person operating the carry cart to move the carry cart in the intended direction. Hereinafter, the person who operates the carry cart is simply referred to as an operator.

  However, with this type of carry cart, it may be difficult to always move the carry cart in the direction intended by the operator. In particular, when the road surface is severely uneven, the carry cart tends to move in a direction different from the direction in which it is desired to travel. In addition, it is easy to generate a phenomenon of picking up in the traveling direction. For this reason, it often happens that it becomes difficult for the operator to smoothly move the carry cart.

  The problems of the conventional four-wheel carry cart described above are as follows.

  First, because the four wheels are turnable wheels, even if you push the grip forward and try to run the carry cart forward, the four wheels attached to the frame at the extension of the grip are Depending on the unevenness of the road surface, the phenomenon of trying to move in each direction is generated, and it is not always possible to move all four wheels in the direction pushed by the grip. As a result, the carry cart easily swings from side to side in the direction of travel. Therefore, the operator often cannot move the carry cart smoothly in the intended direction.

  Second, as shown in FIG. 2, since the grip is located between the point above the front wheel and the point above the rear wheel, the unevenness of the road surface makes it easy to pick up the carry cart as shown in FIG. . However, the two wheels 15 (FIG. 1) attached to the front in the traveling direction are referred to as front wheels, and the two wheels 16 (FIG. 1) attached to the rear are referred to as rear wheels. In other words, if the grip is pushed in the direction of travel, the grip will try to travel in the direction of travel, but if the road surface and the wheel have high friction, the wheel will be prevented from moving forward, and as a result, the carry cart will have the front wheel as the axis. In addition, the rotational force in the direction of travel becomes stronger, and the carry cart is easier to pick forward.

  As for the above-mentioned problem [0006], at least the two rear wheels are made to be wheels that do not change direction (called fixed wheels) and are mounted on the bottom surface of the carry cart only in the traveling direction (Claims 1 and 2). This makes it easier for the carry cart to maintain its direction parallel to the traveling direction, and makes it difficult for the carry cart to change direction due to road surface irregularities.

  With respect to the above problem [0007], the grip is positioned behind the point above the rear wheel (claim 3). The grip positioned rearward of the rear wheel in this way is called a rear lever grip. Alternatively, the grip is positioned ahead of the point above the rear wheel. A grip positioned in front of the rear wheel in this way is referred to as a front lever grip. As shown in FIG. 5, the carry cart operator can lift the front wheel slightly by applying a force to push down the rear lever grip (58) in the road surface direction based on the principle of the lever with the rear wheel as a fulcrum. Alternatively, as shown in FIG. 5, the carry cart operator can lift the front wheel slightly by the lever principle with the rear wheel as a fulcrum by pulling up the front lever grip (59) in the air.

  When the front wheel is lifted, the front wheel and the road surface can be temporarily brought into contact with each other, or the frictional force generated between the front wheel and the road surface can be reduced, and as a result, the phenomenon of picking up can be easily prevented. Can do.

  Then, with the front wheel lifted slightly, pushing the rear lever grip forward or pulling the front lever grip forward moves the rear wheel forward, and the carry cart moves forward and picks up. The carry cart can be smoothly moved forward while preventing this.

  According to the present invention, it is possible to reduce the phenomenon that the four-wheel carry cart moves in a direction not intended by the operator, and to reduce the phenomenon of picking up, so that the carry cart can run smoothly.

  Because of the above effects, the present invention can be used on a daily basis as a four-wheel carry cart for travel, shopping, and commuting.

The perspective view of the four-wheel carry cart which shows embodiment of this invention A diagram of a person operating a four-wheel carry cart that is commonly seen in the past Perspective view of a conventional four-wheel carry cart Illustration of the phenomenon that the carry cart picks up Carry cart with rear lever grip or front grip is hard to pinch

  The following are examples of embodiments of the present invention.

  The two wheels placed in the rear corners must be fixed wheels that cannot change direction, but the wheels placed in the front corners can change direction even if they are fixed. It may be a rotary type.

  Four wheels are mounted on the bottom surface, one at each of the four corners of the bottom surface, and five or more wheels may be mounted on the bottom surface.

18, 19, 21, 31, 41 ... grips 12, 22, 32, 42 ... frames 13, 23, 33 ... 鞄 15, 45, 55 ... wheels (front wheels)
16, 26, 46, 56 ... wheels (rear wheels)
17, 57, 67 ... Rod 18, 58 ... Rear lever grip 19, 59 ... Front lever grip

21, 13, 41 ... grip 12, 22, 32, 42 ... frame 13, 23, 33 ... 鞄 15, 45, 55 ... wheels (front wheels)
16, 26, 46, 56 ... wheels (rear wheels)
17, 57 ... Rod 18, 58 ... Rear lever grip 19, 59 ... Front lever grip

Claims (3)

  At least four corners of the bottom surface of the carry cart are equipped with four wheels, that is, two wheels 15 (FIG. 1), one at each left and right corner, and two wheels 16 (FIG. 1), one at each left and right corner. Carry cart.   At least two of the rear wheels 16 (FIG. 1) do not rotate at an angle deviating from the forward direction, and are carry carts equipped with fixed wheels that always advance in the forward direction.   A grip 18 (FIG. 1) extending rearward from the rod 17 (FIG. 1) extending vertically from the point of the rod 17 (FIG. 1) standing vertically on the frame connecting the two fixed rear wheels mounted on the carry cart. A carry cart directly connected to the carry cart, a carry cart extending forward from the point (FIG. 1) directly to the rod, or a carry cart equipped with the grip 18 and the grip 19 together.

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