JPH0427071B2 - - Google Patents

Description

Claim 1: A housing having a housing that can be fixed to a bicycle and houses a stator and a rotor, and in which the rotor is rotated by a drive part that can be driven by the wheels of the bicycle, in which the housing 1 has a flat, substantially oval shape. Configured as a housing, the support bush 2
3 is fixable on the axle 6, in the housing 1 an annular drive part 4 is rotatably supported around a support bushing 23, a coupling mechanism 22 is attached to the drive part 4 via an overhanging arm 50, A swingable engagement piece 52, which is acted upon by a spring locking device 53 of this coupling mechanism, engages between the spokes 10 of the wheel 5 and is inserted into the housing 1, away from the drive part 4, into the stator of the generator. 2 and a rotor 3 are provided,
A ring-shaped large toothed belt wheel 45 is fixed around the drive part 4, and a small toothed belt wheel 46 is fixed around the shaft 29 of the rotor 3, and a toothed belt wheel 45 is fixed around both belt wheels 45, 46. A bicycle generator characterized in that a belt 44 is wound around and drives a rotor 3 through an engagement piece 52 when a drive part 4 is rotated by a wheel 5.

[Industrial application field]

The present invention relates to a bicycle generator, which has a housing that can be fixed to a bicycle and accommodates a stator and a rotor, the rotor being caused to rotate by a drive part that can be driven by the wheels of the bicycle.

[Conventional technology]

Such a generator is publicly known (Utility Model Opening in 1982).
176888), the Bicycle Hawk is equipped with a generator with drive wheels. A large drive wheel is rotatably supported around the wheel axis, and a generator is driven via a belt wrapped around both drive wheels. In this configuration, the generator, drive wheels and belts are exposed and are therefore protected from rainwater, snow and
Since they are not protected against environmental influences such as dust, these exposed parts are susceptible to rust and wear, and slippage of the belt on the drive wheels does not guarantee reliable drive power transmission. Further, this generator drive device has the disadvantage that it is constructed in a large size, has a poor appearance, and is easily damaged.

Utility Model Application No. 53-65513 also shows a generator drive device for a bicycle, but the generator is attached to the frame of the bicycle, and the gear fixed to the chain wheel meshes with the rotor gear of the generator. Alternatively, by wrapping a belt around the belt wheel on the chain wheel and the rotor belt wheel of the generator, the generator is driven through the gear when the pedal is depressed.

Even in this configuration, the driving force transmission part is exposed,
It has the same drawbacks as in the previously described configuration.

[Problem to be solved by the invention]

SUMMARY OF THE INVENTION The object of the invention is to provide a bicycle generator which is compact, protected from external influences and which is easy to install on the bicycle.

[Means to solve the problem]

In order to solve this problem, according to the present invention, the housing is configured as a flat, substantially oval housing, which can be fixed on the axle by means of a support bush, and an annular drive part is fixed in the housing around the support bush. A coupling mechanism is mounted on the drive part via an overhanging arm, and a pivotable engagement piece, which is acted upon by a spring locking device of the coupling mechanism, engages between the spokes of the wheel; The stator and rotor of the generator are provided within the housing separate from the drive part, a ring-shaped large toothed belt wheel is fixed around the drive part, and a small toothed belt wheel is fixed around the axis of the rotor. fixed, a toothed belt is wrapped around both belt wheels,
The rotor is driven via the engagement piece when the drive part is rotated by the wheel.

〔Effect of the invention〕

Thus, according to the invention, the compact, flat housing can be easily fixed to the axle, and the entire transmission and generator is protected from external influences and damage, such as weather and dust, in a closed housing. protected and contained. The transmission device consists of a toothed belt wheel and a toothed belt, so
Slip-free driving force transmission is guaranteed. Furthermore, the engagement piece, which can be inserted between the spokes for engagement, is the only part that projects from the housing, so it can be easily manipulated by hand, and when the wheel rotates, it can be easily manipulated by the drive part that rotates with it. The driving force can be transmitted reliably.

[Brief explanation of drawings]

Figure 1 is a perspective view of a bicycle equipped with a generator, Figure 2
The figure is a front view of the embodiment of the present invention with the lid removed.
The figure is a sectional view taken along the line -- in FIG. 2, and FIGS. 4 and 5 are views corresponding to FIGS. 2 and 3 of another embodiment.

〔Example〕

In FIG. 1, a housing 1 of a generator, which is rotationally driven by a wheel 5, can be fixed to an axle 6, preferably a front axle 6, of a bicycle.

That is, in FIGS. 2 and 3, the housing 1
can be fixed to the axle 6 by a support bush 23. This support bushing 23 is located within the housing 1.
Around the annular drive part 4 and a similarly annular large toothed belt wheel 45 are rotatably supported via ball bearings, and on the rotor shaft 29 a small toothed belt wheel 46 is fixed. There is. A toothed belt 44 is wound around these toothed belt pulleys 45 and 46 to form a winding transmission device, and a tension wheel 47
kept in a state of tension.

The housing 1 has the basic shape of an oval, and in the smaller oval area there is a housing part 27 with a lid 28, in which the stator 2, the rotor 3 and the toothed belt wheel are arranged. 4
6, a tension wheel 47 and a current cable connection rocker piece 48 with a brass connection 49 for the current cable 21 are provided.

The annular drive part 4 is provided with an overhanging arm 50,
The connecting mechanism 22 supported by this overhanging arm has a shaft 5
The engagement piece 52 has a spring locking device 53 and is pivotable around the engagement piece 52 .

An annular large toothed belt pulley 45 is constructed integrally with the drive part 4 around an outer race 54 of a ball bearing, which supports it rotatably around the bearing bush 23.

By swinging the engaging piece 52 of the coupling mechanism 22 about 90 degrees around the pin 51 from the position shown by the solid line to the position shown by the chain line, the engaging piece 52 is inserted between the spokes 10 of the wheel 5, Due to the rotation of the wheel 5, the coupling mechanism 22 and the wrap transmission devices 44 to 47
The rotor 3 of the generator is rotated via the rotor 3 of the generator.
In the uncoupled state, in which the engagement piece 52 is in the position of the solid line, the wheel 5 rotates freely without additional load, as in the normal state.

The coupling mechanism 22 is moved against a spring locking device 53 which only allows coupling or uncoupling by means of two marked positions.

As mentioned above, the toothed belt 44 drives the toothed belt wheel 46 and hence the rotor 3, for example i=10
This results in a gear ratio of .

4 and 5 differ from the previously described embodiment only in that the coupling mechanism 22 is provided near the generator and the engaging piece 52 is formed in an L shape.

The headlight and taillight current cables are connected to the generator by a swingable current cable connection swing piece 48 .

Installation of the generator is carried out by removing the retaining nuts and washers of the axle 6 from the wheel hubs.

The generator can now be fitted onto the axle 6.
The generator is fixedly connected to the axle 6 by means of the previously removed retaining nut. The normal assembly of the wheel 5 and the wheel hawk 20 is carried out by tightening the nuts.