KR200426246Y1 - Shock?absorbing wheel - Google Patents

Abstract

The shock absorbing member is inserted to provide a wheel having a shock absorbing function. Wheels having a shock-absorbing function according to the present invention is a wheel formed integrally with an outer member made of urethane on the outer peripheral surface of the wheel having a through shaft hole in the center, the elastic material is installed in the receiving space formed inside the outer member It includes a shock absorbing member consisting of.

Wheel, urethane, outer member, shock absorbing member, caster

Description

Shock absorbing wheel {Shock absorbing wheel}

1 is a perspective view of a wheel having a shock absorbing function according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II-II 'of FIG. 1.

3 is a partial cutaway perspective view of a wheel having a shock absorbing function according to a first embodiment of the present invention;

4 is a view showing an operating state for the road surface when the caster using the wheel having a shock absorbing function according to the first embodiment of the present invention.

Figure 5a is a side cross-sectional view of a wheel having a shock absorbing function according to a second embodiment of the present invention.

5B is a view showing an operating state of the road surface when the caster using a wheel having a shock absorbing function according to a second embodiment of the present invention.

Figure 6a is a side cross-sectional view of a wheel having a shock absorbing function according to a third embodiment of the present invention.

Figure 6b is a view showing the operating state for the road surface when the caster using the wheel having a shock absorbing function according to the third embodiment of the present invention.

Figure 7a is a side cross-sectional view of a wheel having a shock absorbing function according to a fourth embodiment of the present invention.

Figure 7b is a view showing the operating state for the road surface when the caster using the wheel having a shock absorbing function according to the fourth embodiment of the present invention.

(Explanation of symbols for the main parts of the drawing)

10: wheel 11: through shaft hole

20: outer member 24: block

22: accommodating space 30, 31a, 31b, 32, 33: shock absorbing member

The present invention relates to a wheel having a shock absorbing function, and more particularly to a wheel having a shock absorbing function by inserting a shock absorbing member inside the wheel.

In general, the wheel is a tube inside to adjust the elasticity to the outside of the wheel by the air pressure, for example, but in the case of a small diameter wheel is made of a material of urethane or rubber installed on the outer diameter of the wheel. When the small wheels rolled from the ground or the road surface, the small wheels were directly affected by the ground according to the shape of the ground.

Small wheels are widely used in various fields, and are applied to caster wheels such as in-line wheels, in particular, mini wheels, medical wheels, and machine tool wheels.

In the case of caster wheels, if the road surface is uneven, the impact of the wheels is transmitted to the upper part as it moves, and if the user does not pay close attention when carrying a product that is brittle or sensitive to fine movements, There was a problem such as product damage.

Therefore, there is a need for a wheel with sufficient cushioning capacity but without the risk of puncture.

The technical problem to be achieved by the present invention is to provide a wheel having a shock-absorbing function to absorb the shock even when the movement of the uneven surface having a better elasticity and cushioning function.

The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The wheel having a shock absorbing function according to the present invention for achieving the above technical problem, in the wheel integrally molded with an outer member made of urethane on the outer peripheral surface of the wheel having a through shaft hole in the center, formed inside the outer member It is installed in the receiving space and comprises an impact absorbing member made of an elastic material.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different forms, only the embodiments of the present invention to complete the disclosure of the present invention, it is common knowledge in the art It is provided to fully inform the person having the scope of the invention, which is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a wheel having a shock absorbing function according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a wheel 100 having a shock absorbing function according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line II-II 'of FIG. 1, and FIG. A partial cutaway perspective view of a wheel 100 having a shock absorbing function.

As shown in Figures 1 to 3, the wheel 100 having a shock absorbing function according to the first embodiment of the present invention to form a through-hole hole 11 in the center to form a wheel 100 ), The outer member 20 coupled to the outer circumferential surface of the wheel 10 and the shock absorbing member 30 inserted into the outer member 20 may be configured.

The wheel 10 is manufactured by molding into a metal or reinforced synthetic resin. In addition, a protrusion 12 having a predetermined height is formed along the outer circumferential surface of the wheel 10 so that the outer member 20 is firmly coupled, and the outer member 20 is formed on the outer circumferential surface of the wheel 10 with the wheel 10. Insert molding is combined.

The outer member 20 forms a receiving space 22 to insert the shock absorbing member 30 therein, the material may be made of an elastic material such as urethane, PE, rubber, but is not limited thereto.

The shock absorbing member 30 is manufactured by molding a predetermined size and shape to form a mold, and then mixing urethane, PE, and rubber raw materials having high elastic properties, and foaming them at a high temperature. At this time, the elasticity or fluidity of the shock absorbing member 30 is configured to be higher than the outer member 20.

The operation and effect of the wheel 100 having a shock absorbing function according to the first embodiment of the present invention having the configuration as described above will be described in detail below.

4 is a view showing an operating state for the road surface when the caster 1 using the wheel 100 having a shock absorbing function according to the first embodiment of the present invention.

That is, as shown in Figure 4, the shock absorbing member 30 having excellent elasticity is sandwiched inside the outer member 20, and the outer side is surrounded by the outer member 20, so that the different elasticity and shape retention When the road surface 5 or road gap 6 that is uneven due to the restoring force and the small grains of sand 7 collide with the surface of the outer member 20, the outer member 20 is deformed by the deformation of the shock absorbing member 30. As the margin to deform occurs, it temporarily absorbs shock.

Figure 5a is a side cross-sectional view of a wheel 200 having a shock absorbing function according to a second embodiment of the present invention, Figure 5b is a caster using a wheel 200 having a shock absorbing function according to a second embodiment of the present invention (1) shows the operating state of the road surface when moving.

With reference to this, each of the embodiments will be described only in terms of differences from the first embodiment. The wheel 200 having a shock absorbing function according to the second embodiment of the present invention has a structure basically the same as that of the first embodiment except for the following. That is, as illustrated in FIG. 5A, the shock absorbing member 30 of the first embodiment may be separated into two layers, and may be configured of the first shock absorbing member 31a and the second shock absorbing member 31b. Here, the first shock absorbing member 31a and the second shock absorbing member 31b are made of polyurethane (PU) that is relatively softer than the outer member 20. Polyurethane contains various components, but it can be seen that it is made from polydiol and diisocyanate. Polydiol has a fluid form and diisocyanate has rigidity.

Here, the fluidity of the first shock absorbing member 31a and the second shock absorbing member 31b is adjusted by controlling the content of polydiol and diisocyanate. Preferably, in order to more smoothly absorb the shock transmitted to the first shock absorbing member 31a, the content of the polydiol and the diisocyanate is adjusted so that the second shock absorbing member 31b is relatively smaller than the first shock absorbing member 31a. It has a fluid form.

Therefore, as shown in FIG. 5B, when the caster 1 moves on the uneven road surface 5, the first shock absorbing member 31a first absorbs the shock transmitted to the caster 1 and is more fluid. The second shock absorbing member 31b having the second absorbs the shock again. Therefore, the shock transmitted to the caster 1 can be more efficiently absorbed by the buffering role of the second shock absorbing member 31b following the outer member 20 and the first shock absorbing member 31a. The material of the first shock absorbing member 31a and the second shock absorbing member 31b may be an elastic material such as a rubber material, and thus the scope of the present invention is not limited thereto.

6A is a side cross-sectional view of a wheel 300 having a shock absorbing function according to a third embodiment of the present invention, and FIG. 6B is a caster using a wheel 300 having a shock absorbing function according to a third embodiment of the present invention. (1) shows the operating state of the road surface when moving.

With reference to this, each of the embodiments will be described only in terms of differences from the first embodiment. The wheel 300 having a shock absorbing function according to the third embodiment of the present invention has the same structure as the first embodiment except for the following.

That is, as shown in FIG. 6A, a plurality of receiving spaces 22a are formed in the outer member 20, and the shock absorbing members 32 are inserted into the respective receiving spaces 22a. At this time, the length h1 of the shock absorbing member 32 is applied to the shock absorbing member 32 in which the outer member 20 is pressed to increase the elongation of the accommodating space 22a in the outer member 20. It is formed shorter than the length h2 and inserted.

Therefore, as shown in FIG. 6B, the shock transmitted to the outer member 20 when the caster 1 moves on the uneven road surface 5 is absorbed by the plurality of shock absorbing members 32 formed therein. Here, the length h2 of the receiving space 22a is formed longer than the length h1 of the shock absorbing member 31, so that there is a free space, so that the shock absorbing member 32 extending in the longitudinal direction is provided to the caster 1 without interference. It can absorb the shock transmitted.

7A is a side cross-sectional view of a wheel 400 having a shock absorbing function according to a fourth embodiment of the present invention, and FIG. 7B is a caster using a wheel 400 having a shock absorbing function according to a fourth embodiment of the present invention. (1) shows the operating state of the road surface when moving.

With reference to this, each of the embodiments will be described only in terms of differences from the first embodiment. The wheel 400 having a shock absorbing function according to the fourth embodiment of the present invention has a structure basically the same as that of the first embodiment except for the following.

That is, as shown in Figure 7a, by forming a plurality of blocks 24 on the outer surface of the outer member 20 serves to prevent steering, traction, stability and sliding. Here, the shock absorbing member 33 preferably has a protrusion so as to correspond to the shape of the block 24. Therefore, as shown in Figure 7b, by the plurality of blocks 24 formed on the outer member 20, not only the gravel field 8, but also can be used on the ground, such as dirt roads in places consisting of sandy beaches such as beach It is also applicable to mobile floats and farm equipment.

In addition, although not shown, a tread pattern or the like may be formed on the outer surface of the outer member 20 to prevent slippage.

Although the above embodiments have been individually described, a wheel having a shock absorbing function of the present invention may be applied by mixing one or more of these embodiments.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, a person of ordinary skill in the art to which the present invention belongs may be embodied in other specific forms without changing the technical idea or essential features thereof. You will understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

In addition, the wheel having a shock absorbing function according to the present invention has been described as being used for caster wheels. Although the wheel having a shock absorbing function according to the present invention is expected to be used for the caster wheel, it is not impossible to use the wheel having a shock absorbing function according to the present invention in a device other than the caster wheel. For example, it can be used for in-line wheels, skateboard wheels, quick board wheels and many other leisure culture products. Therefore, the term 'caster' used in the present specification should be understood as only 'exemplifying' a specific embodiment.

As described above, according to the wheel having a shock absorbing function according to the present invention, there is an advantage that the concern of puncture can be solved and the cushioning effect can be increased.

In addition, it is easy and easy to manufacture, reducing the manpower and production time required for the production has the advantage that can provide a high quality product at a low cost.

Claims (9)

In the wheel integrally molded with an outer member made of urethane on the outer peripheral surface of the wheel having a through shaft hole in the center, The wheel having a shock absorbing function is installed in the receiving space formed inside the outer member and comprises a shock absorbing member made of an elastic material. The method of claim 1, The accommodation space is formed in an annular shape according to the shape of the outer member, the shock absorbing member is a wheel having a shock absorbing function is formed to correspond to the shape of the receiving space. The method of claim 1, The accommodation space is made of a plurality of spaces formed at a predetermined interval, the shock absorbing member has a wheel having a shock absorbing function is inserted into each of the plurality of receiving space. The method of claim 3, wherein The length of the receiving space is a wheel having a shock absorbing function is formed to be longer than the length of the shock absorbing member. The method of claim 1, wherein the outer member, Wheel having a shock absorption function further comprises a plurality of blocks formed on the outer surface at a predetermined interval. The shock absorbing member according to any one of claims 2 to 5, The wheel having a shock absorbing function made of a material having a higher elasticity or fluidity than the outer member. The method of claim 6, wherein the shock absorbing member, A first shock absorbing member that primarily absorbs the shock transmitted from the outer member; And The wheel having a shock absorbing function consisting of a second shock absorbing member for secondarily absorbing the shock transmitted from the first shock absorbing member. The method of claim 7, wherein the second shock absorbing member, The wheel having a shock absorbing function made of a material having a higher elasticity or fluidity than the first shock absorbing member. The method of claim 8, wherein the second shock absorbing member, Wheel having a shock absorbing function is installed on the inner side than the first shock absorbing member.

Images