JP2002204711A - Method for carrying baggage which permits smoothly ascending and descending the stairs - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for carrying baggage which solves prodigious labor required to ascend and descend the stairs with heavy baggage or the like in hand. SOLUTION: Several pairs of cylindrical rollers 5 provided with a buffer in a truncated chevron shape or a reverse truncated chevron shape with the ascending and descending direction of baggage as an axis are symmetrically placed in the bottom face of a suitcase. By attaching the rollers so as to overlap a little each other, the carriage of the baggage can be smoothly performed without a break when slid the corner of the stairs. At this time, the more the angle formed by the axis of the ascending and descending direction of the baggage and the attaching axis of the roller approaches 90 degree, the easier traction becomes. Moreover, because the roller does not rotate when the face to which these cylindrical rollers 5 are attached is placed on a flat ground, the suitcase does not move and serves as a stopper. The method of the present invention can also be used for the back of a shopping cart or the like.

Description

[Detailed description of the invention] When carrying luggage on level ground, if there is a step like a stair by conventional manual means, the long stairs can be lifted and lowered at a stretch by using the method of the present invention. Here, this is an embodiment in which the present invention is applied to a suitcase. On the bottom surface of the suitcase, several pairs of cushioned cylindrical rollers 5 are fixed by bearings 4 so as to form a symmetrical shape of a U-shape or an inverted C-shape with the vertical direction of the load as the axis. . Roller recess 7
Since the cylindrical roller 5 is inserted into the surface of the suitcase, it does not protrude so much that there is not much discomfort in appearance. Also, when the surface with the cylindrical roller 5 is placed on a level surface, the suitcase will not move because the rollers will cancel out the force of rotation. Therefore,
Replaces the stopper at the bottom of the conventional bag. Third
As the C angle in the figure approaches 90 degrees, traction A becomes easier. When going up and down the stairs, at least two places at least at the corners of the stairs slide one of the cylindrical rollers 5 as shown in the embodiment of FIG. 4, so that the goods can be transported smoothly. Since the present invention has a simple structure, it can be provided at a low cost. The same effect can be obtained by applying the present invention to the back of a conventional shopping cart.

[Brief description of the drawings]

Fig. 1 is a front view of a suitcase embodying the present invention. Fig. 2 is a bottom view of a suitcase embodying the present invention. Fig. 3 is a view of the movement of a cylindrical roller when A is set as a pulling direction. FIG. 4 shows an embodiment of the present invention.

[Explanation of symbols]

[1] Body [2] [3] Handle
[4] Bearing [5] Cylindrical roller [6] Shaft
[7] Roller depression [8] Caster [A] Traction force
[B] Force to lower [C] Angle formed by attaching the center line of the cart and rollers [D] Angle of stairs

Claims (1)

[Claims] 1. A flat ground is transported by a conventional wheel, and a step like a stair is provided with several pairs of cylindrical rollers 5 which are symmetrical in a C-shape with the direction in which the load rises and lowers as an axis. A transport method in which a cylindrical roller 5 and a cylindrical wheel 5 are provided so as to be able to slide, and the cylindrical roller 5 continuously slides the corner D of the stairs by manual means on a cart provided with the cylindrical roller 5 superimposed thereon, so that the load can be smoothly lifted and lowered. If you use this transport method on the bottom of a conventional suitcase, the back of a shopping cart, etc., you can easily go up and down stairs.