CN2181417Y

CN2181417Y - Energy-saving wheel bearing

Info

Publication number: CN2181417Y
Application number: CN 93241335
Authority: CN
Inventors: 赵思俭
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-11
Filing date: 1993-10-11
Publication date: 1994-11-02
Anticipated expiration: 2003-10-11

Abstract

The utility model relates to an energy-saving and labour-saving wheel bearing. The inner race and the outer race of the rear-wheel bearing of the existing bicycle are dismounted and removed and replaced by the inner race and outer race with changed designs; so, the original rotation of the outer race following with wheels is changed to the rotation of the inner race following with wheels, the frictional resistance is reduced, and the effects of labour saving and energy saving are obtained.

Description

Energy-saving wheel bearing

The utility model is the energy-saving Wheel bearing of a kind of bicycle use.

At present, existing cycle wheel bearing as shown in Figure 1, inner bearing ring 6 is fixed on the rear axle, transfixion during bicycle running; 3 of outer races are pressed on the axle skin that is linked together with flywheel, rotate with wheel.Because this structure outer race is a revolving part, will overcome certain friction drag during bicycle running.

The purpose of this utility model is to be the Wheel bearing of revolving part with the race, inner for bicycle provides a kind of, and it can reduce the friction drag of wheel in travelling.

The purpose of this utility model is achieved in that race, inner 6(such as the Fig. 5 that changes after designing), be pressed in the axle hole skin that is linked together with flywheel.During bicycle running, it rotates with wheel; Changing the outer race 3 after designing, then be linked together by screw thread and rear axle, is supporter during bicycle running, transfixion.Because race, inner becomes revolving part, the external diameter of it and ball contact portion is significantly smaller than the internal diameter of former revolving part outer race.Clearly, the friction drag during wheel travels then can greatly reduce.

Be analyzed as follows from mechanics principle now:

According to existing cycle wheel version, as people by bike the time, if the power that people's body weight and bicycle deadweight are distributed on the rear axle by vehicle frame is made as G, this power is passed through rear axle--race, inner G--ball 4 and outer race 3 supportings.In traveling process, manpower drives flywheel by chain.Backshaft skin and outer race 3 together rotate, the friction moment that it need overcome be M1 as shown in Figure 3, this moment friction moment M1 be:

M1＝μ＊D／2＊G －－－－－－－－－－－－－（1）

In the formula: μ is a coefficient of rolling friction

D is the outer race internal diameter

G is the gravity that is distributed on the rear axle

According to the utility model bearing arrangement, be distributed in that gravity is G on the rear axle, this power is passed through rear axle---improving race, inner 6 supportings after outer race 3---ball 4---after the design improves design, the friction moment that will overcome this moment is M2:

M2＝μ＊d／2＊G －－－－－－－－－－－－－（2）

Compare (1), (2) two formulas

Because D＞d

So M2＜M1

Above-mentioned analytical proof: behind the race, inner and outer race enforcement change design and change installation site to existing bicycle wheels bearing, then can reach the effect of lowering energy-saving, and simple in structure.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is existing bicycle rear bearing arrangement figure.

Fig. 2 is the utility model wheel bearing figure.

Fig. 3 is existing cycle wheel bearing reduced graph.

Fig. 4 is the utility model Wheel bearing reduced graph.

Fig. 5 is the race, inner enforcement figure that changes after designing.

Fig. 6 is the outer race enforcement figure that changes after designing.

In the embodiment of Fig. 2, be that former bicycle wheels bearing is as shown in Figure 1 pulled down, remove race, inner 6 and outer race 3, and according to the embodiment of Fig. 5 and Fig. 6, processing and manufacturing goes out to change design-calculated race, inner 6 and outer race 3, replace race, inner 6 and outer race 3 in the former front and back wheel bearing with them, implement legend according to Fig. 2, the race, inner 6 that changes after designing is pressed in the axle skin of front and back wheel, install ball 4, again outer race 3 usefulness screw threads are screwed into the threaded portion of antero posterior axis, regulate the gap, with wheel can freely rotate, no clamping stagnation, nothing swing and get final product.

Claims

1, a kind of energy-saving Wheel bearing, by race, inner, ball and outer race are formed, and it is characterized by: race, inner and the wheel hub of bearing are linked together, together rotation, outer race then becomes supporter and static and fixes.

2, as right 1 described Wheel bearing, it is characterized by: inner bearing ring is pressed on the skin hollow shaft or is pressed in the intracutaneous hole, and bearing outer race links with screw thread and axle.