KR100594351B1 - Wheel for caster - Google Patents

Abstract

The present invention relates to a wheel, comprising a first and a second wheel body having a through hole formed in a center thereof and provided with bearing seats having concave recesses in a peripheral outer region of the through hole, respectively; At least one at least one surface is provided at one side of the wheel body at a predetermined interval and is formed in a penetrating shape, and has a predetermined length at one side of the first and second wheel bodies at a predetermined distance from the locking groove. At least one locking jaw; The first tire material inlet hole is formed in a plurality of predetermined intervals on the flange along the outer peripheral surface circumferential direction of each of the first and second wheel body, the one side is cut out and the flange and the bearing of the first and second wheel body A second tire material inlet hole formed in a shape penetrated between the seating portions; A solid synthetic resin tire having a predetermined width is formed on the outer circumferential surfaces of the flanges of the first and second wheel bodies which are assembled to face each other by the locking jaw and the locking groove with the bearing supporting the shaft therebetween. As a result, a solid assembly binding state can be maintained by quickly and easily assembling the first and second wheel bodies using the locking step and the locking groove formed by the forging method. In addition to the advantages of maintaining the state, a caster wheel is provided that can increase the productivity according to the rapid assembly and the effect of reducing the manufacturing cost due to the reduction of the assembly number.

Castors, Wheels, Rims, Wheel Assemblies

Description

Caster wheel {wheel for caster}

1 is an exploded perspective view of a caster wheel according to the present invention;

Figure 2 is an assembled side view of the caster wheel according to Figure 1,

3 is a longitudinal sectional view according to FIG. 2;

4 is a longitudinal sectional view illustrating a state in which a shaft is installed on a caster wheel according to the present invention.

＊ Explanation of symbols for main part of drawing ＊

10: caster wheel 20, 30: first and second wheel body

20a, 30a: Through hole 20b, 30b: Bearing seat

20c, 30c: Flange 20d, 30d: 1st tire material inlet hole

20e, 30e: 2nd tire material inlet hole 40: Hanging groove

50: locking jaw 60: bearing

70: tire 100: shaft

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to caster wheels installed on various doors and manual transport vehicles to smooth their rolling. More particularly, the present invention relates to a pair of first and second wheel bodies which face each other easily and quickly without welding. It is to provide a caster wheel with excellent flatness of the rolling surface by assembling and integrally molding the paired first and second wheel bodies into a solid synthetic resin tire.

In general, casters are wheel structures configured to be installed and attached to their bottom surface to easily move a door moving along a rail having a constant track, or to easily move a carrying object such as a chair bed or the like.

Conventional caster wheels have recessed shapes in the inner circumferential direction of the outer circumferential surface of the caster wheel so as to move smoothly without leaving the rail, and the outer surface includes a tire formed of a soft plastic material. In these wheels, the pair of wheel bodies that make up the wheels are cast iron, stainless steel, aluminum or cast products or injection molded from nylon, and are formed in opposite sides on each side, which are welded or a pair of wheels. It is press-fitted or compressed using a separate connector for connecting them in the middle of the main body, thereby forcibly fitting the connection.

By the way, in the assembly method of the wheel body in the conventional caster wheels as described above, the assembly method by welding, the wheel body in addition to the cumbersome work, because each of the wheel body in the opposite direction must be connected to each other, the wheel body Is formed with a relatively small diameter, and if the shape change of the outer circumferential surface of the wheel body is distorted due to the welding, the rolling surface of the wheel becomes undesirably undesired. On the other hand, in assembling the wheel body, the tableting method of tableting or pressurizing to press them together with a separate connecting pipe between them is used, in addition to the point of deterioration of the working environment due to the noise generated by the tableting. Because of the use of parts called connectors, there was a problem that leads to an increase in manufacturing cost. In particular, the welding method and the interference fitting method are a great problem for small-scale self-employed workers because they are opposed to the increase in productivity with the increase of the assembly number.

Therefore, the object of the present invention is to maintain the solid state of assembly by the locking jaw and the locking groove in the state of contact with each other with the adoption of a relatively simple configuration, and to form a flat surface of the rolling surface by forming a solid synthetic resin tire It provides a caster wheel that can be maintained smoothly, which can reduce manufacturing costs and improve productivity due to quick and easy assembly and improve the working environment.

According to the present invention, in the wheel, the through-hole is formed in the center, the first and second wheel body provided with bearing seats of the shape concave recessed in the outer peripheral region of the through hole, respectively; At least one at least one surface is provided at one side of the first and second wheel bodies at predetermined intervals, and has a groove formed in a penetrating shape, and a predetermined length at one side of the first and second wheel bodies at a predetermined interval from the locking groove. At least one locking jaw formed to protrude; The first tire material inlet hole is formed in a plurality of predetermined intervals on the flange along the outer peripheral surface circumferential direction of each of the first and second wheel body, the one side is cut out and the flange and the bearing of the first and second wheel body A second tire material inlet hole formed in a shape penetrated between the seating portions; On the caster wheel, characterized in that the solid synthetic resin tire of a predetermined width is formed on the outer peripheral surface of the flange of the first and second wheel body assembled opposite to each other by the locking jaw and the locking groove with a bearing supporting the shaft therebetween. Is achieved.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention. 1 is an exploded perspective view of the caster wheel according to the present invention, Figure 2 is an assembled side view of the caster wheel according to Figure 1, Figure 3 is a longitudinal cross-sectional view according to FIG.

As can be seen in these figures, the caster wheel 10 according to the present invention is formed in a forged manner to be firmly assembled in contact with each other in the opposite direction, having a through hole (20a, 30a) The first and second wheel bodies 20 and 30 are provided.

At least one locking groove 40 and a locking jaw 50 are formed at one side of the first and second wheel bodies 20 and 30 at predetermined intervals, and the locking groove 40 and the locking jaw 50 are formed. Are interlocked at mutually alternating positions and rotated to one side to be jammed, thereby solidifying each other primarily to maintain the assembled state. At this time, the bearing seating portion 20b (30b) is located in the bearing 60 serves to support the shaft 100 as shown in FIG.

Meanwhile, the first tire material inlet hole 20d having one side cut out at a predetermined interval in the flanges 20c and 30c along the circumferential surface of the first and second wheel bodies 20 and 30, respectively ( 30d) is formed, and the second tire material inlet hole 20e is formed between the flanges 20c and 30c of the first and second wheel bodies 20 and 30 and the bearing seats 20b and 30b. 30e is formed, and the tire 70 is formed on the outer circumferential surface of the flanges 20c and 30c of the first and second wheel bodies 20 and 30 by the urethane material. When the mold is formed into the solid synthetic resin material for forming the tire 70 through the first tire material inlet hole 20d and 30d and the second tire material inlet hole 20e and 30e, the first and second wheel bodies are introduced. While the 20 and 30 are integrally fixed to each other, the second and second wheel bodies 20 and 30 serve to maintain the assembled state firmly, and the solid synthetic resin tire 70 is molded. because of Since the flatness of the rolling surface is smooth, the rolling state of the caster wheel 10 is good.

In the above-described and embodiments, the locking grooves 40 formed on one side of the first and second wheel bodies 20 and 30 are formed in a penetrating shape, and the locking jaw 50 has a predetermined length to protrude. Forming in the shape is described, but not limited to the locking groove and the locking step of the form and shape as shown in the above embodiment, as described above, the first and second wheel body 20 If the first and second wheel body 20, 30 is formed on one side of the 30 to be formed to engage and hook each other, even if the first and second wheel body of any shape and form It is possible to implement, and of course, included in the technical scope of the present invention.

As described above, according to the present invention, a solid assembly binding state can be maintained by quickly and simply assembling the first and second wheel bodies using the locking step and the locking groove formed by the forging method, and the solid synthetic resin tire In addition to the advantages of maintaining the flat state of the cloud surface by the molding of, the caster wheel is provided to obtain the effect of improving the productivity due to the rapid assembly and reducing the manufacturing cost due to the reduction of the assembly number.

Claims (1)

In the wheel, First and second wheel bodies each having a through hole formed at a center thereof, and bearing seats having concave recesses formed in outer peripheral areas of the through hole; At least one at least one surface is provided at one side of the first and second wheel bodies at predetermined intervals, and includes a locking groove formed in a penetrating shape, and at one side of the first and second wheel bodies at predetermined intervals. At least one locking jaw having a predetermined length and protruding from the protrusion; The first tire material inlet hole is formed in a plurality of predetermined intervals on the flange along the outer peripheral surface circumferential direction of each of the first and second wheel body, the one side is cut out and the flange and the bearing of the first and second wheel body A second tire material inlet hole formed in a shape penetrated between the seating portions; A caster wheel, comprising: a solid synthetic resin tire having a predetermined width formed on the outer circumferential surfaces of the flanges of the first and second wheel bodies assembled to face each other by the locking jaw and the locking groove with a bearing supporting the shaft therebetween.

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