CN204222538U

CN204222538U - The rim structure of bicycle

Info

Publication number: CN204222538U
Application number: CN201420607954.4U
Authority: CN
Inventors: 陈威瑾
Original assignee: Alex Global Technology Inc
Current assignee: Alex Global Technology Inc
Priority date: 2014-10-21
Filing date: 2014-10-21
Publication date: 2015-03-25
Anticipated expiration: 2024-10-21

Abstract

The utility model is about a kind of rim structure of bicycle, and this wheel rim comprises two side, and is connected to the connecting wall of described sidewall in opposite directions between end face, and one is connected to internal ring wall between described sidewall radial inside edge; This internal ring wall is drilled with uniform intervals distribution and bores a hole in order to the spoke of fixed spoke, spoke adjacent between two perforation central axis between and have a mid point along the line that internal ring wall is formed, the wall thickness of this internal ring wall camber line of being bored a hole from this mid point toward spoke is cumulative, this midpoint is that the wall thickness thinnest part of this internal ring wall is about 0.8mm ~ 1.2mm, and the wall thickness thickness that spoke perforation place is this internal ring wall is about 2.5mm ~ 7.0mm; Whereby, can reach under raising wheel rim spiral shell establishes the structural strength at spoke place, reduce wheel rim weight, and reduce telling on of stress.

Description

The rim structure of bicycle

Technical field

The utility model, about a kind of rim structure, refers in particular to a kind of rim structure of bicycle.

Background technology

The quality of bicycle performance can be weighed from riding property, safety and durability three aspect, with regard to safety and durability, generally includes the structural strength of each spare part of bicycle, such as wheel rim, vehicle frame, gear, change-speed box ....Wherein, for wheel rim, its important performance is its anti-Static Fatigue Strength, anti-power strength at repeated alternation and its weight.

In recent years, people alleviate the weight of wheel rim by reducing the material usage of wheel rim, but under wheel rim weight-saving prerequisite, must consider the strength and stiffness of wheel rim under the effect of forward force and side force further, make this wheel rim both light and safety without anxiety.

Please refer to shown in Fig. 1, Fig. 2, for the one known features of wheel rim, this wheel rim 1 has two side 11, and is connected to the connecting wall 12 of described sidewall 11 in opposite directions between end face, and the internal ring wall 13 that is connected to described sidewall 11 radial inside edge, and this internal ring wall 13 has multiple spaced apart and thickened section 131 that thickness is thicker, and be drilled with the spoke perforation 132 in order to fixed spoke (not shown) in described thickened section 131, improve by the thickened section 131 that thickness is thicker the structural strength that wheel rim 1 spiral shell establishes spoke place, and then reduce the thickness at other position.

But this wheel rim because form significantly turnover between thickened section and thinning internal ring wall, and this turnover will form stress raiser, affect the structural strength of wheel rim, and easily cause the situation of rhegma in this place.

Please referring again to Fig. 3, for another known features of wheel rim, this wheel rim 2 is more or less the same with the structure of the known wheel rim of one 1, all there is two side (not shown), one is connected to the connecting wall 22 of described sidewall in opposite directions between end face, and the internal ring wall 23 that is connected to described sidewall radial inside edge, its different part mainly exists: this internal ring wall 23 has multiple spaced apart and thickened section 231 that thickness is thicker, position is between two between thickened section 231 and the homogeneous thin segment 232 of thickness, be connected the tiltedly section of establishing 233 between thickened section 231 and thin segment 232, the spoke perforation 234 in order to fixed spoke (not shown) is drilled with in described thickened section 231, make to improve by the thickened section 231 that thickness is thicker the structural strength that wheel rim 2 spiral shell establishes spoke place, and the weight of wheel rim can be reduced simultaneously.

But the rim structure shown in Fig. 3 still can produce the concentrated phenomenon of stress at thin segment and the oblique section of establishing joining place, affects the structural strength of this wheel rim.

The present, namely the design people is in view of above-mentioned known wheel rim uses in the enforcement of reality the disappearance part that produces, and grinds and create the utility model.

Utility model content

Main purpose of the present utility model, is to provide a kind of rim structure of bicycle, mainly makes this wheel rim have outside good structural strength, also can reach simultaneously and have weight-saving effect concurrently.

Above-mentioned main purpose of the present utility model and effect reached by following concrete technological means:

A rim structure for bicycle, this wheel rim comprises two side, and is connected to the connecting wall of described sidewall in opposite directions between end face, and one is connected to internal ring wall between described sidewall radial inside edge; This internal ring wall is drilled with uniform intervals distribution and bores a hole in order to the spoke of fixed spoke, this adjacent between two spoke perforation central axis between and have a mid point along the line that this internal ring wall is formed, the wall thickness of this internal ring wall camber line of being bored a hole from this mid point toward this spoke is cumulative, this midpoint is the wall thickness thinnest part of this internal ring wall, and this spoke perforation place is the wall thickness thickness of this internal ring wall.

The rim structure of bicycle as above, wherein the wall thickness thickness of this midpoint is between 0.8mm ~ 1.2mm.

The rim structure of bicycle as above, the wall thickness thickness of wherein this spoke perforation place is between 2.5mm ~ 7.0mm.

Advantage of the present utility model is:

Wheel rim of the present utility model, produce because there is no angle of transferring between the wall thickness thinnest part (mid point) of its internal ring wall and wall thickness thickness (spoke perforation place), but take continuous print camber line to be connected, therefore, internal ring wall does not have the phenomenon generation that stress is concentrated, also therefore make this wheel rim possess under good structural strength, also have wheel rim weight-saving effect simultaneously concurrently.

Accompanying drawing explanation

The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein,

Fig. 1 is one known rim structure diagrammatic side-view cross-sectional schematic diagram;

Fig. 2 is the section cross-sectional schematic at the A-A place of Fig. 1;

Fig. 3 is its two known rim structure diagrammatic side-view cross-sectional schematic diagram;

Fig. 4 is the utility model rim structure diagrammatic side-view cross-sectional schematic diagram;

Fig. 5 is the one embodiment side-looking partial enlarged drawing of the utility model rim structure;

Fig. 6 is its two embodiments side-looking partial enlarged drawing of the utility model rim structure;

Fig. 7 is its three embodiments side-looking partial enlarged drawing of the utility model rim structure.

Drawing reference numeral illustrates:

1 wheel rim 11 sidewall

12 connecting wall 13 internal ring walls

131 thickened section 132 spoke perforation

2 wheel rim 22 connecting walls

23 internal ring wall 231 thickened section

The 232 thin segments 233 tiltedly section of establishing

234 spoke perforation

3 wheel rim 31 sidewalls

32 connecting wall 33 internal ring walls

331 spoke perforation

Detailed description of the invention

For the effect making technological means of the present utility model and can reach, have more complete and clearly disclose, now contrasting accompanying drawing and detailed description of the invention of the present utility model is described:

Please refer to shown in Fig. 4, Fig. 5, it is rim structure diagrammatic side-view cross-sectional schematic diagram of the present utility model and its partial enlarged drawing.

The utility model mainly improves for the rim structure of bicycle.This wheel rim 3 comprises two side 31, and is connected to the connecting wall 32 of described sidewall 31 in opposite directions between end face, and one is connected to internal ring wall 33 between described sidewall 31 radial inside edge; Wherein:

This internal ring wall 33 is drilled with the spoke perforation 331 of uniform intervals distribution, the perforation 331 of this spoke is in order to fixed spoke (not shown), this adjacent between two spoke perforation 331 central axis L between and have a mid point M along the line that this internal ring wall 33 is formed, the wall thickness of this internal ring wall 33 is bored a hole from this mid point M toward this spoke 331 cumulative settings as in camber line, the wall thickness D1 at this mid point M place is the thinnest part of this internal ring wall 33, and the thickness of this wall thickness D1 is between 0.8mm ~ 1.2mm, and this spoke is bored a hole, the wall thickness D2 at 331 places is the thickness of this internal ring wall 33, the thickness of this wall thickness D2 is between 2.5mm ~ 7.0mm.Wherein, as shown in Figure 5, for the thinnest part wall thickness D1 of its internal ring wall 33 of wheel rim 3 of the present utility model differs the less schematic diagram of ratio with thickness wall thickness D2; And shown in Fig. 6, Fig. 7, be then the thinnest part wall thickness D1 of its internal ring wall 33 of wheel rim 3 of the present utility model differs large percentage schematic diagram with thickness wall thickness D2; In addition, Fig. 6, Fig. 7 are disclosed in the difference enforcement aspect in the wall thickness D2 thickness of the spoke perforation 331 of this internal ring wall 33 further.

Wheel rim 3 of the present utility model is the thickest by the wall thickness D2 at the thinnest 331 places of boring a hole with spoke of the wall thickness D1 thickness at the mid point M place making internal ring wall 33, mid point M place takes continuous print camber line to be connected with internal ring wall 33 inner edge that spoke is bored a hole between 331 simultaneously, make mid point M place and the spoke internal ring wall 33 of boring a hole between 331 there is no angle of transferring to produce, and make this internal ring wall 33 not have the concentrated phenomenon generation of stress.

In addition, just because of internal ring wall 33 inner edge that mid point M place and spoke are bored a hole between 331 takes continuous print camber line to be connected, the wall thickness D1 at mid point M place is made to be the thinnest part of this internal ring wall 33, and this spoke is bored a hole, the wall thickness D2 at 331 places is the thickness of this internal ring wall 33, this spoke 331 places of boring a hole are made to have the intensity that spoke can be provided firmly to be spirally connected, and under at mid point M place, internal ring wall 33 inner edge of boring a hole with spoke between 331 takes continuous print camber line to be connected, the weight of this wheel rim 3 can be alleviated further, reach and make wheel rim 3 weight-saving effect.

The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those of ordinary skill in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.

Claims

1. a rim structure for bicycle, is characterized in that, this wheel rim comprises two side, and is connected to the connecting wall of described sidewall in opposite directions between end face, and one is connected to internal ring wall between described sidewall radial inside edge; This internal ring wall is drilled with uniform intervals distribution and bores a hole in order to the spoke of fixed spoke, this adjacent between two spoke perforation central axis between and have a mid point along the line that this internal ring wall is formed, the wall thickness of this internal ring wall camber line of being bored a hole from this mid point toward this spoke is cumulative, this midpoint is the wall thickness thinnest part of this internal ring wall, and this spoke perforation place is the wall thickness thickness of this internal ring wall.

2. the rim structure of bicycle as claimed in claim 1, it is characterized in that, the wall thickness thickness of this midpoint is between 0.8mm ~ 1.2mm.

3. the rim structure of bicycle as claimed in claim 1 or 2, it is characterized in that, the wall thickness thickness of this spoke perforation place is between 2.5mm ~ 7.0mm.