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Rear wheel spoke rim for bicycle

A bicycle and spoke technology, applied to spoked wheels, wheels, rims, etc., can solve the problems of rim deformation, contact between the rim and the brake block, etc., and achieve the effect of reducing tensile deformation, preventing rim deformation, and improving rigidity

Active Publication Date: 2010-03-03
SHIMANO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, when driving, the tensile load will be applied to the spokes 31" to cause tensile deformation, so that when the rim travels, problems such as rim deformation and contact between the rim and the brake pads are prone to occur

Method used

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  • Rear wheel spoke rim for bicycle
  • Rear wheel spoke rim for bicycle
  • Rear wheel spoke rim for bicycle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0077] Below, refer to figure 2 and Figure 4 A first embodiment of the present invention will be described.

[0078] figure 2 showing a rear view of a spoked rim of a rear wheel according to a first embodiment of the present invention, Figure 4 A left side view of the spoked rim of the rear wheel showing the first embodiment of the present invention.

[0079] The rear spoked rim 1 of the first embodiment of the present invention has: a rim 10 having a hub axle 21 and a first spoke connecting portion 22 and a second spoke connecting portion 23 (formed at intervals from the first spoke connecting portion 22 ) hub 20, the first spoke group 30 used to connect the rim 10 and the first spoke connecting portion 22, and the second spoke group 40 used to connect the rim 10 and the second spoke connecting portion 23.

[0080] Such as Figure 4 As shown, the first spoke group 30 has spokes 32 of a second cross-sectional area that are loaded in compression when actuated and spoke...

no. 2 example

[0092] Figure 5 A second embodiment of the invention is shown. exist Figure 5 in, with Figure 4 The same symbols denote the same components, and descriptions of these components are omitted. The difference between the first spoke group 30' of the second embodiment and the first spoke group 30 of the first embodiment is that the first spoke group 30' is composed of two kinds of spokes with different materials, that is, made of the first material. The spokes 31' of the first material and the spokes 32' of the second material are formed; and the modulus of elasticity of the first material is higher than the modulus of elasticity of the second material.

[0093] As the second material spokes 32', for example, aluminum spokes are used for weight reduction; and as the first material spokes 31', for example, stainless steel spokes having a higher modulus of elasticity than aluminum are used.

[0094] In this way, by increasing the modulus of elasticity of the spoke 3r of the f...

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PUM

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Abstract

The invention provides a rear wheel spoke rim for a bicycle, which can enhance the rigidity of the rim in the state that the weight increase of a spoke is inhibited as much as possible. The rear wheelspoke rim comprises a rim, a hub, a first spoke group and a second spoke group, wherein the hub is provided with a hub shaft, first spoke connecting parts and second spoke connecting parts alternately formed with the first spoke connecting parts; the first spoke group is used for connecting the rim and the first spoke connecting parts; the second spoke group is used for connecting the rim and thesecond spoke connecting parts; the first spoke group is provided with a second sectional area spoke and a first sectional area spoke; the second sectional area spoke comprises a rim side end, a hub side end and a second central part; the rim side end is connected to the rim, the hub side end is connected to the first spoke connecting parts, and the second central part is connected to the two endsand comprises a first central part with a first sectional area which is larger than the second sectional area.

Description

technical field [0001] The invention relates to a spoked rim of a rear wheel for a bicycle, in particular to a spoked rim of a rear wheel for a bicycle which can improve the rigidity of the rim. Background technique [0002] There are two hub flanges on the rear hub for spokes, one hub flange is located on the drive side driven by the sprocket (usually on the right side when riding a bicycle), and the other hub flange is located on the drive side. Opposite side (left). [0003] Generally speaking, if figure 1 As shown, the configuration of the spoke group 40 installed on the right flange R adopts a cross pattern (cross pattern). When viewed from the lateral direction, the spokes 40A and 40B intersect each other. The included angle θ1 is larger than the included angle θ2 between the spoke connected to the right flange and the horizontal plane S of the rim (refer to figure 2 ), from the perspective of tension balance in the transverse direction, the tension of each spoke m...

Claims

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Application Information

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IPC IPC(8): B60B21/06B60B1/00
Inventor 腰山和喜
Owner SHIMANO INC
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