TW202423727A - Through axle for a bicycle - Google Patents

Abstract

The present invention relates to a through axle for a bicycle and having an axle body. The axle body has two fixed portions mounted respectively on two ends of the axle body and connected with a frame of the bicycle. A supporting portion is formed on the axle body and has a diametrically flexibility. Accordingly, the through axle can provide a supporting effect to a hub of the bicycle to keep a clearance between the hub and the through axle from becoming large.

Description

Bicycle through-axle

The present invention relates to a through-axle for a bicycle, and more particularly to a through-axle capable of improving the supporting effect on a wheel hub.

The existing bicycle wheel hub is connected to the frame through a through axle. The existing through axle is either hollow or solid. In order to keep the wheel hub rotatable relative to the through axle, a small gap is usually formed between the through axle and the wheel hub. However, after a period of riding, this small gap will become larger and larger due to wear. This will not only cause noise problems when riding the bicycle, but may also cause the wheel hub to tilt and affect the normal riding of the bicycle.

Therefore, the inventor of the present invention has specially improved the defects of the existing bicycle through-axle structure and use, and has developed a kind of invention which can improve the existing defects through continuous research and testing.

The main purpose of the present invention is to provide a bicycle through-axle, which can not only provide a good support effect for the wheel hub, but also avoid the problem of noise caused by excessive gap between the through-axle and the wheel hub.

To achieve the above-mentioned purpose, the present invention mainly provides a bicycle through-axle, which includes an axle body, a fixing part which can be connected to a bicycle frame is formed at both ends of the axle body, and a supporting part with radial elasticity is formed on the axle body.

The bicycle through-axle is characterized in that the supporting part is a receiving groove concavely provided on the axle body and surrounding the outer surface of the axle body, and a flexible supporting ring is provided in the receiving groove and is sleeved on the axle body, and the flexible supporting ring is provided with slots extending to both ends of the flexible supporting ring, and the thickness of the flexible supporting ring is slightly greater than the depth of the receiving groove, so that the flexible supporting ring slightly protrudes from the surface of the axle body.

The bicycle through-axle is characterized in that the axle body is a solid rod body.

The bicycle through-axle is characterized in that the supporting portion on the axle body is a supporting protrusion integrally protruding from the axle body and surrounding the axle body, the supporting protrusion protrudes higher than the outer surface of the axle body, and a plurality of slots radially penetrating the supporting protrusion are radially arranged on the supporting protrusion.

The bicycle through-axle is a hollow tube.

The bicycle through-axle is provided with a plurality of supporting parts on the axle body.

The bicycle through-axle described above has each supporting part having a receiving groove concavely provided on the axle body and surrounding the outer surface of the axle body, and an elastic supporting ring is provided in the receiving groove and is sleeved on the axle body, and the elastic supporting ring is provided with slots extending to both ends of the elastic supporting ring, and the thickness of the elastic supporting ring is slightly greater than the depth of the receiving groove, so that the elastic supporting ring slightly protrudes from the surface of the axle body.

The bicycle through-axle is characterized in that each supporting part is a supporting protrusion integrally protruding from and surrounding the axle body, the supporting protrusion is high and protrudes from the outer surface of the axle body, and a plurality of slots radially penetrating the supporting protrusion are radially arranged on the supporting protrusion.

By means of the above technical means, the present invention can not only provide a stable supporting force for the wheel hub, but also maintain the rotatable relationship between the wheel hub and the through-axle, so that the wheel hub can be kept in a good operating state. In addition, it can also avoid the gap between the axle and the wheel hub from becoming larger due to long-term riding, thereby preventing noise or riding problems, and thus achieving the effect of maintaining smooth operation of the wheel hub for a long time.

The present invention mainly provides a bicycle through-axle. Please refer to FIG. 1 to FIG. 3. It can be seen from the figure that the through-axle of the present invention is mainly used to connect with a frame 30, and pass through a wheel hub 40 and maintain a relatively rotatable state with the wheel hub 40. The through-axle of the present invention mainly includes an axle body 10. The axle body 10 can be solid or hollow. A fixing portion 102 that can be connected to the bicycle frame 30 is formed at both ends of the axle body 10. A supporting portion 12 with radial elasticity is formed on the axle body 10. When the shaft 10 is a solid rod, a receiving groove 122 is concavely provided on the shaft 10 and surrounds the outer surface of the shaft 10. An elastic support ring 124 is provided in the receiving groove 122 and is sleeved on the shaft 10. The elastic support ring 124 is provided with slots 126 extending to both ends of the elastic support ring 124. The thickness of the elastic support ring 124 is slightly greater than the depth of the receiving groove 1223, so that the elastic support ring 124 slightly protrudes from the surface of the shaft 10. In addition, the structure of this embodiment can also be used when the shaft 10 is a hollow tube.

Thus, when the wheel hub 40 is sleeved on the through-axis, the slightly protruding support portion 12 can be closely fitted and contacted with the inner surface of the wheel hub 40. Since the support portion 12 has radial elasticity, it will not affect the assembly between the wheel hub 40 and the through-axis, and can provide a stable supporting force for the wheel hub 40. The rotatable relationship between the wheel hub 40 and the through-axle can be maintained, so that the wheel hub 40 can be kept in a good operating state. In addition, the gap between the shaft 10 and the wheel hub 40 can be prevented from increasing due to long-term riding, thereby preventing noise or riding problems. The smooth operation of the wheel hub 40 can be maintained for a long time.

Please refer to FIG. 4 and FIG. 5 , as can be seen from the figure, if the shaft 10A is a hollow tube, the support portion 12A on the shaft 10A can be a support protrusion 124A that is integrally protruded from the shaft 10A and surrounds the shaft 10A. The support protrusion 124A is high and protrudes from the outer surface of the shaft 10A, and a plurality of grooves 126A that radially penetrate the support protrusion 124A are radially arranged on the support protrusion 124A. By setting the groove 126A, the support The protrusion 124A has the characteristic of radial expansion, so when the wheel hub 40 is mounted on the shaft 10A, the protrusion 124A can be supported to provide the wheel hub 40 with a good support effect, and the wheel hub 40 can be kept in a rotatable state relative to the shaft 10A, and the gap between the wheel hub 40 and the shaft 10A can be prevented from increasing due to wear, thereby maintaining the wheel hub 40 in a good operating state. In addition, the structure of this embodiment can also be used when the shaft 10A is a solid rod.

Please also refer to FIG. 6 , from which it can be seen that a plurality of supporting portions 12B can be provided on the axle 10B of the present invention, and the plurality of supporting portions 12B can be used to support different parts of the wheel hub 40, such as bearings, etc., so as to provide a better supporting effect for the bicycle wheel hub 40.

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.

10,10A,10B: axle 102: fixing part 12,12A,12B: supporting part 122: receiving groove 124: supporting ring 124A: supporting protrusion 126,126A: slot 30: frame 40: wheel hub

FIG. 1 is a three-dimensional schematic diagram of the present invention in which the wheel hub and the frame of the bicycle are assembled. FIG. 2 is a three-dimensional external view of the first embodiment of the present invention. FIG. 3 is a side cross-sectional view of the first embodiment of the present invention combined with the wheel hub. FIG. 4 is a three-dimensional external view of the second embodiment of the present invention. FIG. 5 is a three-dimensional cross-sectional view of the second embodiment of the present invention. FIG. 6 is a cross-sectional schematic diagram of the third embodiment of the present invention.

10: Axis

102:Fixed part

12: Support part

30: Frame

40: wheel hub

Claims (8)

A bicycle through-axle includes an axle body, a fixing portion connected to a bicycle frame is formed at both ends of the axle body, and a radially retractable supporting portion is formed on the axle body. As described in claim 1, the bicycle through-axle, wherein the supporting portion is a receiving groove concavely provided on the axle body and surrounding the outer surface of the axle body, and an elastic support ring is provided in the receiving groove and is annularly arranged on the axle body, and the elastic support ring is provided with grooves extending to both ends of the elastic support ring, and the thickness of the elastic support ring is slightly larger than the depth of the receiving groove, so that the elastic support ring slightly protrudes from the surface of the axle body. A bicycle through-axle as described in claim 1 or 2, wherein the axle body is a solid rod body. As described in claim 1, the bicycle through-axle, wherein the supporting portion on the axle is a supporting protrusion that is integrally protruded from the axle and surrounds the axle, the supporting protrusion protrudes higher than the outer surface of the axle, and a plurality of grooves that radially penetrate the supporting protrusion are radially arranged on the supporting protrusion. A bicycle through-axle as described in claim 1 or 4, wherein the axle body is a hollow tube. The bicycle through-axle as described in claim 1 has a plurality of supporting parts disposed on the axle body. As described in claim 6, the bicycle through-axle, wherein each supporting part is a receiving groove concavely provided on the axle body and surrounding the outer surface of the axle body, and an elastic support ring is provided in the receiving groove and is annularly mounted on the axle body, and the elastic support ring is provided with grooves extending to both ends of the elastic support ring, and the thickness of the elastic support ring is slightly larger than the depth of the receiving groove, so that the elastic support ring slightly protrudes from the surface of the axle body. As described in claim 6, the bicycle through-axle, each supporting portion is a supporting protrusion that is integrally protruded from the axle body and surrounds the axle body, the supporting protrusion is higher than the outer surface of the axle body, and a plurality of grooves that radially penetrate the supporting protrusion are radially arranged on the supporting protrusion.

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