JPH04309682A - Rubber roller - Google Patents

Abstract

PURPOSE:To obtain a rubber roller having a light metal wheel at a low cost for connecting between a bearing and a rubber wheel accurately and rigidly in a rubber roller such as a hunger roller and a step roller or the like, which has a bearing in a center part and has a rubber wheel in the periphery part and in which the bearing and the rubber roller are connected by a metal wheel. CONSTITUTION:Two annular metal plates 6, 7 in the same shape, in which rib is formed radially between the outer periphery and the inner periphery and while a projecting part of one rib coincides with a recessed part of the other rib to the direction opposite to each other, are overlapped with each other, and are bonded integrally to form a metal wheel. A bearing 2 is installed to the inner periphery side of the metal wheel, and a rubber wheel 13 is installed to the outer periphery side thereof.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a hanger roller for hanging an elevator door and rolling it on a rail.
Or a step roller that supports the tread of an escalator and allows it to roll on the rail, or generally has a bearing in the center and a rubber wheel on the outer periphery, with metal wheels in between. This invention relates to rubber rollers connected to each other.

0002

[Prior art] The conventional technology of the above rubber roller is
Taking a roller as an example, the conventional hanger roller
As shown in FIG. 7, which is a cross section taken from above the center line, the roller is made of urethane resin in an annular groove 3a formed on the outer circumferential side of the metal wheel 3 that fits on the inner circumferential side of the bearing 2. A rubber wheel 4 is formed. In the figure, 1 is a center line, and 5 is a retainer for the bearing 1.

The structure of the hanger roller is simple as described above, and there is no particular problem in its function of supporting the load while rolling on the rail. However, since the metal wheel shown in the figure has a solid structure, a large amount of material is used, which not only increases the material cost but also makes it heavy, and the manufacturing process requires cutting using a lathe or the like. Therefore, the processing time is relatively long and the processing cost is high, so there is a desire for a more economical structure. This also applies to step rollers and other rubber rollers that have a bearing in the center, a rubber wheel on the outer periphery, and are connected by a metal wheel.

0004

OBJECTS TO BE SOLVED BY THE INVENTION Accordingly, the problem to be solved by the present invention is to provide a rubber roller that can satisfy the above-mentioned needs, in other words, to provide a rubber roller that can combine bearings and rubber wheels. It is an object of the present invention to provide a rubber roller having a lightweight and low-cost metal wheel that connects parts with high precision and high rigidity.

[0005]

[Means for Solving the Problems] The present invention has been made for the purpose of solving the above problems, and has a structure in which ribs are formed radially between the outer periphery and the inner periphery of the annular shape. At the same time, two metal plates of the same shape, facing in opposite directions so that the peaks of one rib match the valleys of the other rib, are superimposed and joined together to form a metal wheel, and the metal It is characterized in that a bearing is attached to the inner circumferential side of a manufactured wheel, and a rubber wheel is similarly attached to the outer circumferential side.

That is, the inventors of the present invention conducted research aimed at solving the above-mentioned problems, and as a result, they solved the above-mentioned problems of conventional metal wheels manufactured by cutting with a lathe and having a solid structure. In order to do this, ■ two pressed annular metal plates should be combined and firmly connected together to form a metal wheel, and ■ the metal plate (generally a pressed steel plate) should be Although it is advantageous that the weight is light because it is thin, the mechanical strength against torque in the direction tilted with respect to the central axis decreases, so in order to prevent this, a rib structure is installed between the inner and outer peripheries. It is only necessary to form them radially; ■ The two metal plates have the same shape, the peaks of the ribs on one metal plate match the valleys of the ribs on the other metal plate, and they are turned in opposite directions and polymerized. If they are connected together, the two parts will be in close contact with each other without any gaps over the entire annular part including the ribs, and there is a risk that liquid rubber will infiltrate the joint between the two parts when fixing the rubber wheel by casting or injection molding. The present invention was achieved based on the knowledge that the bearing can be firmly held when it is assembled.

[0007]

[Embodiment] Next, an embodiment of the rubber roller of the present invention will be explained with reference to the drawings. Figure 1 shows a hanger roller to which the present invention is applied.
A front view of an example as seen from the axial direction, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1, and FIG.
5 is a sectional view showing another embodiment of the rib structure, FIG. 6 is a sectional view of a step roller to which the present invention is applied, and FIG. 7 is a sectional view showing another embodiment of the rib structure.
8 is a sectional view taken from the center line of a conventional hanger roller, and FIG. 8 is a sectional view taken from the center line of a conventional step roller.

In FIGS. 1 to 4, reference numerals 6 and 7 are annular metal plates having the same shape, and the metal plate 6 has ribs 8 formed in a convex manner with respect to the paper surface of FIG. Rib 9
are formed radially in three places alternately, and the metal plate 7 has ribs 11 that are the same as the ribs 8 and ribs 10 that are the same as the ribs 9.
is provided.

After sandwiching the bearing 2, these metal plates 6 and 7 are firmly joined together to form the aforementioned metal wheel, and urethane resin is injected into the groove m on the outer periphery by injection molding. The rubber wheel 4 is formed by curing and constitutes a rubber roller according to an example of the present invention.

Since the metal plates 6 and 7 are provided with ribs as described above, they are in contact at the center in FIG. 2 showing the AA cross section in FIG. In FIG. 3, the rib 8 is shown to be on the left side of the center, and the rib 9 is shown on the right side of the center. On the other hand, FIG. 4 also shows the C-C cross section.
The cross section along the circumference located approximately halfway between the inner circumference and the outer circumference is shown developed on a plane, but the rib structure formed on the two metal plates 6 and 7 has irregularities cut into each other. contact,
A state in which they are integrally configured is shown.

The metal plates 6 and 7 may be joined by mechanical joining using parts such as screws and rivets, by welding such as projection welding, spot welding, arc welding, or by adhesive. These include, but are not particularly limited to.

By providing the above-described rib structure, the hanger roller to which the present invention is applied has the mechanical strength against torque in the direction of inclination with respect to the central axis of the metal wheel, compared to that without the rib structure. It is significantly strengthened compared to the conventional case, and can have practical rigidity comparable to that of the metal wheel 3 according to the prior art shown in FIG. In this way, the first component of the present invention is that the contacting surfaces of the two metal plates 6 and 7 are in close contact with each other over the entire circumference without creating any gaps to form a rib structure. Note that the two metal plates 6 and 7 can be manufactured using one press mold, which is extremely economical.

The second component of the present invention is shown in FIGS. 2 and 3.
As shown in FIG. 2, the inner circumferential portion of the metal wheel composed of two metal plates 6 and 7 is in close contact with the inner circumferential surface and the axial end surface of the outer ring of the bearing 2 to form a so-called bearing housing. The outer ring of the bearing 2 and the metal wheel are combined. For this reason, the two metal plates 6 and 7 are combined and joined together, and at the same time the metal wheels and bearings 2
The assembly is completed, and the overall processing cost can be significantly reduced. Recently, it has become possible to finish the dimensional accuracy of the bearing housing part to about H6 or M7 by press working, making the present invention even more economical.

In the above embodiment, six ribs were provided on the metal plates 6 and 7, but the structure of the ribs is not limited to this.
For example, the portion corresponding to FIG. 4 may be as shown in FIG. 5, and various other variations are possible. Furthermore, when joining two metal plates 6 and 7 by projection welding or spot welding, in the case of the embodiment of FIG. 4, the flat part of the metal plates 6 and 7, and in the case of the embodiment of FIG.
The flat parts of the ribs 8, 10 and 9, 11 can be easily joined.

The above is an embodiment of the present invention applied to a hanger roller. Next, an example in which the present invention is applied to a step roller will be described.

FIG. 8 is a cross-sectional view of a step roller according to the prior art taken from above the center axis, and shows an aluminum wheel 12.
A rubber wheel 13 made of urethane resin is bonded to the outer periphery of the wheel, two bearings 2 are fitted to the inner periphery, and two axial bearing holders 15 fastened to the wheel 12 with rivets 14 hold the shaft. Fixed in direction. Therefore, there are problems similar to those of the hanger roller.

FIG. 6 shows a step roller to which the present invention is applied.
In order to firmly maintain concentricity, the two bearings 2 are fitted into the bearing collar 16 and then assembled into the metal wheel at the same time as the two steel plates 17 and 18 are joined. It will be done. Further, a rubber wheel 13 made of urethane resin is bonded and attached to the outer cylindrical surface of the metal wheel. Therefore, compared to the prior art shown in FIG. 8, it has the same effect as the above-mentioned hanger roller.

[0018]

[Effects of the Invention] The present invention is as described above, and whereas conventionally metal wheels were produced by cutting bar materials, pipe materials, or die-cast products, ribs obtained by press processing are used. By manufacturing a metal wheel by joining two metal plates having a structure and at the same time assembling a bearing to the metal wheel, it is possible to have sufficient rigidity for practical use. This has the effect of significantly reducing the material cost and processing cost for the rubber roller as a whole.

[Brief explanation of drawings]

FIG. 1 is a front view of an example of a hanger roller to which the present invention is applied, viewed from the axial direction.

FIG. 2 is a sectional view taken along line AA in FIG. 1;

FIG. 3 is a cross-sectional view taken along line BB in FIG. 1;

FIG. 4 is a sectional view taken along line CC in FIG. 1.

FIG. 5 is a sectional view showing another example of the rib structure.

FIG. 6 is a sectional view of a step roller to which the present invention is applied.

FIG. 7 is a sectional view taken from the center line of a conventional hanger roller.

FIG. 8 is a sectional view from the center line of a conventional step roller.

[Explanation of symbols]

1 Center line 2 Bearing 3 Metal wheels 4 Rubber wheels 5　Bearing retainer 6 Metal plate 7 Metal plate 8 Rib (protrusion) of metal plate 6 9 Rib (recess) of metal plate 6 10 Rib (recess) of metal plate 7 11 Rib (convex part) of metal plate 7 12 Metal (aluminum) wheels 13 Rubber wheels 14 Rivet 15 Bearing holder 16 Bearing collar 17 Metal plate 18 Metal plate

Claims (1)

[Claims] Claim 1: An annular shape with ribs formed radially between the outer periphery and the inner periphery, the same shape facing in opposite directions so that the peaks of one rib match the valleys of the other rib. Two metal plates are polymerized and joined together to form a metal wheel, a bearing is attached to the inner circumference of the metal wheel, and a rubber wheel is also attached to the outer circumference of the metal wheel. Rubber roller.