JPS585608Y2 - caster - Google Patents

Description

[Detailed Description of the Invention] This invention relates to casters, and in particular to casters used for transportation vehicles and the like.

Conventionally, in casters used for transportation carts, etc., both sides of a mounting board extend downward parallel to each other, and a wheel is mounted between the tips of the extended portions so as to be rotatable in a vertical direction. It always rotates to face the direction in which the carriage is traveling, allowing the carriage to run smoothly.

However, since the wheels are provided between parts extending from both sides of the construction board, if vertical vibrations are applied to the wheels across a step that protrudes above the floor, such as a threshold or rail, the vibrations may occur. This method has the disadvantage that the vibration effect is directly transmitted to the carrier, and the load on the carrier often collapses due to the impact.

This invention eliminates the drawbacks of the conventional ones as described above, prevents the vibration effect mentioned above from being directly transmitted to the transport vehicle, etc., and reduces the load on the load placed on the upper part of the transport vehicle. An object of the present invention is to provide a caster that can prevent collapse.

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

The figure shows a case of a fixed caster used as the rear wheel of a transport trolley, for example, in which the central part 2 forming the mounting base is formed wide, and at both ends of the central part 20 there are band-shaped parts slightly narrower than the central part 2. 3 is integrally provided on both ends of an elastic plate 3, such as an SK rust steel plate, each of which is bent downward with the same curvature, and formed into a flat ring shape so that the tips thereof overlap each other at the lower center position. At the same time, the wing pieces provided on both sides of the tip located below the overlapping part are extended downward parallel to each other to form the wheel mounting part 4,
In addition, the tongue pieces provided on both sides of the tip located above the overlapping part are also slightly extended downward to form a fitting part 8 into which the upper part of the pair of wheel mounting parts 4 is fitted. A wheel 5 made of hard rubber or the like is provided between the tips of the pair of wheel attachment parts 4 of the attachment member 1 so as to be rotatable in the vertical direction via a shaft 6.

Note that 7 is a mounting hole drilled in the center portion 2 of the wheel mounting member 1 for mounting the wheel mounting member 1 on a transport truck.

Then, the center portion 2 of the wheel attachment member 1 is attached to both ends of the rear lower surface of the transportation base or the like using the attachment hole 7 using screws or the like.

When moving the transport cart or the like constructed in this way, the wheels 5 are rotatable in the vertical direction, so it can be easily moved. 5 is absorbed by the elastic plate, which is formed into a flat ring shape by curving the band-shaped portions 3 at both ends. Therefore, there is no risk of load collapse without applying a large impact to the transport cart, etc. This can be prevented.

In addition, as shown in the embodiment, when the both end strip portions 3 are curved with the same curvature, and the mounting base and the overlapping tip portion are configured to be located in the center of the flat ring shape, the upper and lower portions applied to the wheel 5 It is capable of absorbing directional vibrations extremely effectively.

Furthermore, the above embodiment shows a case where the mounting base is directly mounted to the wheel mounting member 1 with screws, etc., but when this is mounted as a swivel caster to the lower front surface of a transport vehicle, etc., the center of the mounting base A mounting plate is rotatably mounted on the portion 2 by a known means, and this mounting plate is fixed to the wheel mounting member 1.

By having the above-mentioned structure, this device can effectively absorb the vertical vibrations applied to the wheels when they pass through the step on the floor, and the load on the top of the transport vehicle, etc. can be effectively absorbed. It has the advantage of being able to prevent it from collapsing and allowing safe cargo transportation.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, with the first being a front view and the second being a front view.
The figure is a plan view, and FIG. 3 is a right side view. In the drawings, 1 is a wheel mounting member, 2 is a central portion, 3 is a band-shaped portion, 4 is a wheel mounting portion, 5 is a wheel, 6 is a shaft, 7 is a mounting hole, and 8 is a fitting portion.

Claims (3)

[Scope of utility model registration request] (1) Both ends of a band-shaped elastic plate whose central part serves as the mounting base are bent downward to form a flat ring shape in which the tips overlap each other, and one tip located below the overlap part. A caster characterized in that both sides of the caster are suspended parallel to each other to form a wheel mounting part, and a wheel is rotatably provided between the tips of the wheel mounting parts. (2) The caster according to claim 1, wherein the curved portions formed at both end positions have the same curvature. (3) Utility model registration claim 1 in which the mounting base and the overlapping tip portion are located at the center of the flat ring shape
Casters listed in section.