CN101244681A

CN101244681A - Bicycle hub assembly

Info

Publication number: CN101244681A
Application number: CNA2008100268306A
Authority: CN
Inventors: 李忠家
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-11
Filing date: 2008-03-11
Publication date: 2008-08-20
Anticipated expiration: 2028-03-11
Also published as: CN101244681B

Abstract

The invention discloses a bicycle hub assembly, comprising a hub body, a wheel disk seat arranged at an end of the hub body, a wheel shaft through the hub body and the wheel disk seat center which is supported by a self-lubricant bearing and a ball bearing between the wheel shaft and the wheel disk seat. Since the ball bearing can reduce the frictional resistance, the wheel disk seat can rotate properly. Since the self-lubricant bearing is coated at the whole circumference, the bicycle hub assembly has the advantages of dispersing the impact force, lowering the probability of damage to the steel ball of the ball bearing, and reaching the goal of prolonging the service life.

Description

Bicycle hub assembly

Technical field

The present invention system belongs to the technical field of bicycle, refers to a kind of colored hub structure of shock-resistant and high lubricity especially.

Background technology

Bicycle hub system is located in the middle of the wheel, and the spoke of the wheel of buying car in installments colludes establishes tension, and the center of bicycle hub places the wheel shaft that is pivoted again, is incorporated into Front fork end, the Rear Ends/Dropouts of bicycle again by two ends of wheel shaft.

Wherein, colored hub one end of being located at trailing wheel more is provided with a wheel disc seat with rear trochal disc, for the chain winding and drive trailing wheel and rotate, and for rear trochal disc is rotated swimmingly, therefore between rear trochal disc and wheel shaft, be provided with two ball bearing of main shafts, the friction drag when rotating to reduce rear trochal disc.

Yet cross-country in addition, stunt is surperficial because modern bicycle is except the function of riding instead of walk, when cross-country or stunt, trailing wheel often is subjected to great impulsive force, causes the ball distortion of ball bearing of main shaft even the situation of breaking.

And in order to improve the not impact-resistant disappearance of standard bicycle flower hub, therefore, there is the dealer to design M303826 number " bicycle hub structural improvement " novel patent case of a letter patent book number (hereinafter to be referred as the reference case), it is in the sheathed self lubricating bearing more than of gear connecting support internal perisporium, between self lubricating bearing and axle center, establish a lining again, this self lubricating bearing is one-body molded and have from body lubricated, the thin-walled shape sleeve of characteristics such as wear-resisting and high capacity, because the self lubricating bearing of sleeve-like system cooperates with the gear connecting support with the whole circumference face, therefore, when being subjected to impacting, can share stressed, with the probability of reduce damaging.

Yet, though can improve the not impact-resistant disappearance of ball bearing of main shaft with reference to case,, just because of self lubricating bearing is a face contact kenel, therefore, its friction coefficient is higher than the ball bearing of main shaft that is a contact naturally, has resistance and has some setbacks and require great effort in pushes pedals.Therefore, still have necessity of further improvement with reference to case.

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides a kind of bicycle hub assembly that has shock-resistant and low-friction coefficient concurrently.

The technical solution adopted for the present invention to solve the technical problems is:

Bicycle hub assembly comprises:

One flower hub body, it has two ends, is provided with a ratchet ring in an end wherein;

One wheel shaft is the body of rod that is placed through colored hub body center, and two ends of wheel shaft protrude in colored hub body two ends respectively and are respectively equipped with a spiro rod section;

One wheel disc seat, it has two ends, in the contiguous wherein annular periphery wall of an end be provided with one with the unidirectional ratchet means of ratchet ring coupling, the center of wheel disc seat is provided with a coaxial bearing hole, a perforation, the aperture of this bearing hole is greater than perforation, and bearing hole system is located at the other end with respect to unidirectional ratchet means;

One ball bearing of main shaft is to prop up between bearing hole and wheel shaft;

One self lubricating bearing, cording have the cylindrical shell of two ends, and this self lubricating bearing system props up between the perforation and wheel shaft of wheel disc seat.

The invention has the beneficial effects as follows: 1. the resistance of can reducing friction, it is comparatively smooth and easy when the wheel disc seat is rotated: because the present invention props up the wheel disc seat by self lubricating bearing and ball bearing of main shaft, because ball bearing of main shaft has lower friction coefficient and can reduce resistance, it is smooth and easy that the wheel disc seat is rotated, and establishes disappearance with the increase friction drag of self lubricating bearing fully to improve with reference to case; 2. can disperse impulsive force, increase the service life:, when being subjected to impacting power, can disperse impulsive force by self lubricating bearing because self lubricating bearing system touches with whole circumference and wheel shaft, wheel disc seated connection, reduce the chance of the steel ball breakage of ball bearing of main shaft, to increase the service life; 3. the present invention system has that tradition adopts the colored hub of ball bearing of main shaft concurrently and with reference to the advantage of case, and improves the shortcoming of the two, is that a preferable colored hub structure designs.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a three-dimensional combination scheme drawing of the present invention;

Fig. 2 is a perspective exploded view of the present invention;

Fig. 3 is a part plan combination generalized section of the present invention.

Wherein: 10 flower hub bodies, 11 ratchet rings, 20 wheel disc seats, 21 fluted discs, 22 unidirectional ratchet means, 23 bearing holes, 24 perforation, 30 wheel shafts, 31 spiro rod sections, 40 self lubricating bearings, 50 ball bearing of main shafts, 55 nuts among the figure.

The specific embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, bicycle hub assembly provided by the present invention comprises a flower hub body 10, one wheel disc seat 20, one wheel shaft 30, one self lubricating bearing 40, one ball bearing of main shaft 50, wherein, described colored hub body 10 is general with existing product, annular solid for two ends about having, the annular periphery two end places of flower hub body 10 form a radially outstanding flange respectively, on flange, to form most perforation 101 of arranging in the form of a ring, the spoke of taking turns of buying car in installments places fixing, flower hub body 10 centers place for described wheel shaft 30, and two ends of wheel shaft 30 system protrudes in colored hub body 10 and is provided with a spiro rod section 31, wherein end internal perisporium in flower hub body 10 forms a ratchet ring 11 in addition, and mat cooperates with described wheel disc seat 20.

This wheel disc seat 20 is for having the annular solid of two ends, the contiguous wherein annular periphery wall of an end is provided with the fluted disc 21 more than, when it establishes fluted disc more than two, can cooperate speed change, annular periphery wall in the contiguous other end is provided with a unidirectional ratchet means 22 again, and it can cooperate with the ratchet ring 11 of flower hub body 10, when wheel disc seat 20 is just being changeed with flower hub body 10 rotation that combines, during counter-rotating, then break away from idle running with flower hub body 10.Have a variety ofly about the structure of this unidirectional ratchet means 22 and ratchet ring 11, and non-pass characteristics of the present invention are held and are not given unnecessary details.And the center of wheel disc seat 20 is provided with coaxial a bearing hole 23, a perforation 24, and this bearing hole 23 is to be located at same end with fluted disc 21, and the aperture of bearing hole 23 is greater than perforation 24.

Described ball bearing of main shaft 50 is to be located in the bearing hole 23, ball bearing of main shaft 50 comprises ring in the external toroidal ring,, most the balls of being located between the inside and outside ring, wherein, external toroidal ring system and bearing hole 23 internal perisporium precision-fit, and interior ring system and wheel shaft 30 precision-fit.

Described self lubricating bearing 40 has from moistening the shock-resistant thin type sleeve of effect for integral type, it is sheathed between the perforation 24 of wheel shaft 30 annular perisporiums and wheel disc seat 20, to prop up 20 rotations of wheel disc seat, preferable, self lubricating bearing 40 perisporiums are provided with the profile groove that runs through perisporium and two ends together, it can make self lubricating bearing 40 slightly have elasticity, with the internal perisporium of stretching in wheel disc seat 20.

This wheel shaft 30 is the Rear Ends/Dropouts outside that is piercing in vehicle frame with the spiro rod section 31 of two ends, fixes with a packing ring, nut 55 couplings again.

As shown in Figure 3, the present invention is owing to prop up in wheel disc seat 20 by a self lubricating bearing 40 and a ball bearing of main shaft 50, because ball bearing of main shaft 50 has lower friction coefficient and can reduce resistance, it is smooth and easy that wheel disc seat 20 is rotated; Be to contact with wheel shaft 30, wheel disc seat 20 owing to self lubricating bearing 40 again, and when being subjected to impacting power, can disperse impulsive forces, reduce the chance of the steel ball breakage of ball bearing of main shaft 50, to increase the service life by self lubricating bearing 40 with whole circumference.

Claims

1. bicycle hub assembly is characterized in that, comprising: a flower hub body, and it has two ends, is provided with a ratchet ring in an end wherein; One wheel shaft is the body of rod that is placed through colored hub body center, and two ends of wheel shaft protrude in colored hub body two ends respectively and are respectively equipped with a spiro rod section; One wheel disc seat, it has two ends, in the contiguous wherein annular periphery wall of an end be provided with one with the unidirectional ratchet means of ratchet ring coupling, the center of wheel disc seat is provided with a coaxial bearing hole, a perforation, the aperture of this bearing hole is greater than perforation, and bearing hole system is located at the other end with respect to unidirectional ratchet means; One ball bearing of main shaft is to prop up between bearing hole and wheel shaft; One self lubricating bearing, cording have the cylindrical shell of two ends, and this self lubricating bearing system props up between the perforation and wheel shaft of wheel disc seat.

2. bicycle hub assembly according to claim 1 is characterized in that described self lubricating bearing is provided with the profile groove that runs through perisporium and two ends together.