TWI856614B - Bearing for a bicycle - Google Patents

Abstract

The present invention relates to a bearing for a bicycle, and the bearing has an outer ring, an inner ring and an annular gasket. The annular gasket is mounted rotatably between the outer ring and the inner ring and has a curve-shaped cross section. Accordingly, a bearing having a smooth rotation-ability is provided.

Description

Bicycle Bearings

The present invention relates to a bearing, and more particularly to a bearing which is installed on a bicycle and has a simplified structure.

Many rotatable parts on a bicycle are usually equipped with a bearing to make the rotation smoother, such as the headset between the standpipe and the head tube. However, most of the existing bearings are ball bearings, which generally include an inner ring, An outer ring, a cage and a plurality of balls and other structures can provide smooth rotation between the standpipe and the head tube, but its overall structure is relatively complex. It is complex, has many components, and the overall manufacturing cost is high. There are also bearing structures that use a washer between the inner and outer rings. Although it can simplify the complexity of the bearing structure, most of the existing bearing washers are flat. Therefore, the contact area between the existing washer and the inner and outer rings is relatively large, so the relative rotation is prone to be unsmooth, so there is a need for further improvement.

The main purpose of the present invention is to provide a bicycle bearing, wherein the washer has a circular cross section, so that the contact area between the washer and the inner and outer rings can be reduced, thereby achieving the purpose of improving the smoothness of the rotation of the bicycle bearing.

To achieve the above-mentioned purpose, the present invention provides a bicycle bearing, which comprises: an outer ring; an inner ring, which is rotatably disposed in the outer ring; and a gasket, which is rotatably disposed between the inner ring and the outer ring, and the gasket has an arc-shaped cross section.

The bicycle bearing is characterized in that the gasket has a circular cross section.

The bicycle bearing is characterized in that the gasket has an elliptical cross-section.

The bicycle bearing has a groove with an arc-shaped cross section and a groove for accommodating a part of the gasket respectively formed on the side surfaces of the inner and outer rings facing the gasket.

The bicycle bearing has an arc-shaped auxiliary gasket disposed between the inner ring and the gasket, and the auxiliary gasket is accommodated in a groove on the inner ring.

The bicycle bearing is provided with an arc-shaped auxiliary pad between the outer ring and the pad, and the auxiliary pad is accommodated in a groove on the outer ring.

The tubular bicycle bearing further comprises two pairs of washers, which are respectively located between the washers and the outer ring and between the washers and the inner ring, and are respectively partially accommodated in the grooves of the inner and outer rings.

The bicycle bearing is characterized in that the inner and outer rings are made of non-ferrous metal or non-ferrous metal, the gasket is made of engineering plastic or non-ferrous metal, and the auxiliary gasket is made of engineering plastic or non-ferrous metal.

In the bicycle bearing, the material of the auxiliary washer is different from that of the washer.

The bicycle bearing has an arc-shaped auxiliary cushion ring disposed between the inner ring and the cushion ring.

The bicycle bearing has an arc-shaped auxiliary cushion ring disposed between the outer ring and the cushion ring.

The bicycle bearing further comprises two pairs of gaskets, which are respectively located between the gasket and the outer ring and between the gasket and the inner ring.

By using the above-mentioned technical means, the present invention can not only reduce the contact area between the gasket and the inner and outer rings, but also achieve the effect of improving the relative rotation smoothness between the bearing components.

The present invention relates to a bicycle bearing. The bearing of the present invention can be used on a headset or other rotatable frame between a vertical tube and a head tube of a bicycle. Please refer to FIGS. 1 to 3. It can be seen from the drawings that the bearing of the present invention mainly includes an outer ring 10, an inner ring 20 and a washer 30, wherein the inner ring 20 is rotatably arranged at Inside the outer ring 10, the inner and outer rings 10, 20 are made of metal materials, such as non-ferrous metal materials (aluminum, copper or zinc, etc.) or non-ferrous metal materials (steel or iron, etc.). The gasket 30 is rotatably arranged between the inner and outer rings 10, 20. The gasket can be made of engineering plastic materials, such as Teflon or polyoxymethylene (POM) or non-ferrous metal materials.

The washer 30 has an arc-shaped cross section, such as a circular cross section as shown in the figure, which can reduce the contact area between the washer 30 and the inner and outer rings 10, 20, so that the relative rotation of the inner and outer rings 10, 20 and the washer 30 can be smoother, thereby avoiding the relative rotation of the bicycle parts, such as the head tube, etc. A groove 12, 22 with an arcuate cross section can be respectively formed on the side surface of the rings 10, 20 facing the gasket, so that the gasket 30 with a circular cross section can be partially accommodated in the groove 12, 22 on the inner and outer rings 10, 20, so that the gasket 30 and the inner and outer rings 10, 20 can be more stably matched. In addition, the gasket 30 can also be an elliptical cross section. For example, any arcuate line segment, such as a perfect circle, a non-perfect circle, an ellipse or a long ellipse, which can reduce the contact area between the inner and outer rings 10, 20, belongs to the scope of the present invention.

Please refer to FIG. 4, from which it can be seen that in the second embodiment of the present invention, an arc-shaped auxiliary gasket 40 is provided between the inner ring 20 and the gasket 30. The auxiliary gasket 40 can be accommodated in the groove 22 on the inner ring 20. The auxiliary gasket 40 is made of a material different from that of the inner and outer rings 10 and 20. The auxiliary gasket 40 can be used The auxiliary gasket 40 is made of engineering plastic material, such as Teflon or polyoxymethylene (POM) or non-ferrous metal material, and the material of the auxiliary gasket 40 can be the same as or different from that of the gasket 30. When the materials of the gasket 30 and the auxiliary gasket 40 are different, the friction coefficient between the outer ring 10 and the inner ring 20 can be reduced, so that the inner ring 20 can rotate more smoothly relative to the outer ring 10.

Please refer to FIG. 5 , which shows the third embodiment of the present invention, wherein the auxiliary gasket 40A is disposed between the gasket 30 and the outer ring 10 , and is partially accommodated in the groove 12 of the outer ring 10 .

Please refer to FIG. 6 , which shows the fourth embodiment of the present invention, wherein the bearing of the present invention may be provided with two auxiliary rings 40B, which are respectively provided between the gasket 30 and the outer ring 10 and between the gasket 30 and the inner ring 20 , and are respectively partially accommodated in the grooves 12 , 22 of the inner and outer rings 10 , 20 .

It can be seen from the above content that various modifications and changes can be achieved without departing from the essential spirit and novel concept of the present invention, and the specific embodiments disclosed in the present invention are not intended to limit the present invention. This disclosure includes all modifications that fall within the scope of the attached patent application.

10: Outer ring 12: Groove 20: Inner ring 22: Groove 30: Gasket 40,40A,40B: Secondary gasket

Figure 1 is a three-dimensional external view of the first embodiment of the present invention. Figure 2 is a three-dimensional exploded view of the first embodiment of the present invention. Figure 3 is a cross-sectional view of the first embodiment of the present invention. Figure 4 is a cross-sectional view of the second embodiment of the present invention. Figure 5 is a cross-sectional view of the third embodiment of the present invention. . Figure 6 is a cross-sectional view of the fourth embodiment of the present invention.

10: Outer ring

12: Grooves

20: Inner ring

22: Groove

30: Gasket

Claims (8)

A bicycle bearing comprises: an outer ring; an inner ring which is rotatably arranged in the outer ring; and a gasket which is rotatably arranged between the inner ring and the outer ring, the gasket having an arc-shaped cross section, wherein a secondary gasket is arranged between the inner ring and the gasket or between the outer ring and the gasket, and the secondary gasket is curved in an arc shape corresponding to the arc-shaped cross section of the gasket. A bicycle bearing as described in claim 1, wherein the gasket has a circular cross-section. A bicycle bearing as described in claim 1, wherein the gasket has an elliptical cross-section. As described in claim 2, the bicycle bearing has a groove with an arc-shaped cross section and a groove for accommodating a portion of the gasket, respectively, formed on the side surfaces of the inner and outer rings facing the gasket. The bicycle bearing as described in claim 4 further comprises two gaskets, which are respectively located between the gasket and the outer ring and between the gasket and the inner ring, and are respectively partially accommodated in the grooves of the inner and outer rings. A bicycle bearing as described in any one of claim items 1 to 5, wherein the inner and outer rings are made of non-ferrous metal or non-ferrous metal, the gasket is made of engineering plastic or non-ferrous metal, and the auxiliary gasket is made of engineering plastic or non-ferrous metal. In the bicycle bearing as described in claim 6, the material of the auxiliary gasket is different from the material of the gasket. The bicycle bearing as described in claim 1 further comprises two gaskets, which are respectively located between the gasket and the outer ring and between the gasket and the inner ring.

Images