JPH0223148Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a pack for the caster of a bag that can be towed.

[Conventional technology]

Generally, a bag that can be towed has a rotatable caster on the towing side of the bottom and a fixed caster on the opposite side, and the caster mounting plate is in contact with the caster mounting part on the bottom of the bag. Each is fixed and can be towed.

However, since the casters protrude from the bottom of the bag, they cannot be hung on the steps when going up or down stairs.
Furthermore, due to rough handling when checked in as luggage, this type of bag is likely to receive a large impact on the casters themselves and their mounting parts.

In order to alleviate this impact, an elastic flat packing is interposed between the bottom of the bag and the caster, as disclosed in Japanese Utility Model Application Publication No. 53-140264.

[The problem that the idea aims to solve]

However, casters need to be firmly fixed with strong force to ensure running stability, and for this reason, when conventional flat packings are fixed to casters, they are compressed and lose their elasticity. The impact absorption effect of the packing is halved, and if the bag is subjected to a large impact, the part where the casters are attached may cave in, or the casters may come off, leaving holes in the bottom of the bag.

The purpose of the present invention is to solve the above-mentioned problems and provide a bag caster packing that has significantly improved impact resistance and load resistance.

[Means to solve the problem]

The present invention was made to achieve the above object, and the caster packing interposed between the bottom of the bag and the casters is made of a flexible and elastic material and has a plate shape of a required thickness. A large number of wart-shaped protrusions are integrally provided at predetermined intervals on the surface of the caster that comes into contact with the mounting part, and a mounting hole and a fitting part are arranged in the recess, and the mounting hole , the gist is that the peripheral edge of the fitting part is thick and equal in height to the protrusion.

[Effect]

By using the above-mentioned means, the protrusions 3, 3 bulge outward when the caster receives an impact, thereby mitigating and dissipating the impact force, thereby significantly improving impact resistance and load resistance. can.

〔Example〕

The present invention will be explained below based on the illustrated embodiments.

The drawing shows a packing for a swingable caster according to the present invention. 1 is a packing body made of a flexible and elastic material such as soft synthetic resin or synthetic rubber, and is formed into a plate shape with a required thickness; 2 is this packing. It is formed on one side of the main body 1, and is attached to the mounting part Ca of the caster C.
The recess 3 into which a metal plate (for example) can be fitted is a large number of warp-shaped protrusions protruding from the inner bottom surface of the recess 2 at predetermined intervals. Although the wart-like protrusion 3 has a substantially cylindrical cross section, it can also have a desired shape such as a semicircular shape or a truncated conical shape.

4 is a mounting hole, 5 is a fitting part into which the head of the rotating shaft of the caster fits;
is formed on a packing body 1 having a recessed portion 2, a fitting portion 5 is provided in the center, and two mounting holes 4 are provided on both sides of the fitting portion 5. The peripheral edges of the mounting hole 4 and the fitting part 5 are thickened to increase strength, and the thick part 4
The top surfaces of a and 5a are made to be flush with the top surface of the projection 3.

The lower surface of the packing body 1 is formed into a concave shape with a slight depth as shown in Fig. 1C, so that it can be easily attached without slipping by fitting into the convex part provided on the attachment part at the bottom of the bag. The packing body 1 may be made thicker on one side and thinner on the other side in a direction perpendicular to the longitudinal direction, so as to match the slope of the bottom of the bag, so that the caster can be mounted substantially horizontally.

Next, in the above-mentioned caster packing, the packing main body 1 is placed on the attachment part of the bottom of the bag, and the recessed part 2
At the same time as fitting the mounting part Ca of the caster C,
Bolts or the like are inserted into the mounting holes 4, 4 and firmly fixed with nuts or the like.

Therefore, when using the caster packing according to the present invention, even if the caster receives an impact, the protrusions 3, 3... bulge outward to alleviate the impact force.
In addition, since there is a space a between the mounting part Ca of the caster and the inner bottom surface 2a of the recess 2, the influence of impact on the bottom of the bag can be significantly reduced (see Figure 3 A and B). .

In addition, although the above-mentioned Example explained the packing for a swiveling type caster, when it is a packing for a fixed type caster, the fitting part 5 is omitted.

[Effect of idea]

According to the present invention, a recess for mounting a caster is formed on the upper surface of the packing body of a required thickness made of a flexible and elastic material, and a number of wart-like protrusions are protruded at predetermined intervals in the recess. In addition, a mounting hole and a fitting part are provided, and the circumference of this hole is made equal to the height of the protrusion, which greatly improves impact resistance and load capacity, as well as improving fatigue resistance of the caster mounting part due to vibration. It also has practical advantages such as being effective in reducing noise during caster running.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the caster packing of the present invention, A is a plan view, B is a sectional view taken along A-A of A, C is a sectional view taken along B-B of A, and Fig. 2 shows the installed state. The main part sectional view and FIG. 3 show the operating state, A is a schematic explanatory diagram of the normal state, and B is a schematic explanatory diagram of the state at the time of impact. 1 is the packing body, 2 is the recess, 2a is the inner bottom surface,
3 is a protrusion, 4 is a mounting hole, 5 is a fitting part, 4a, 5
a is the thick part.

Claims (1)

[Scope of utility model registration request] The caster packing interposed between the bottom of the bag and the casters is made of a flexible and elastic material in the form of a plate of the required thickness, and has many warts on the surface that comes into contact with the mounting part of the casters. protrusions are integrally provided at predetermined intervals, and a mounting hole and a fitting part are arranged in the recess, and the peripheral edges of the mounting hole and the fitting part are made thick, and the height of the protrusion and the fitting part are made thick. Packaging for the caster of a bag, which is characterized by equal parts.