CN2052743U - Electromagnetic booster for bicycle - Google Patents

Abstract

The utility model relates to an electromagnetic booster used for a bicycle, which leaves out a transmission and deceleration mechanism of an ordinary electric bicycle. A plurality of rim teeth which are made of ferromagnetic materials and protrude from a wheel rim are additionally arranged on an ordinary wheel rim to form a toothed wheel rim; the rim teeth of the wheel rim are fast attracted by an electromagnet fixed on a bicycle frame under the control of a sensor and a switch circuit, and thus, a bicycle wheel is driven. The device has no mechanical transmission or friction, and can be widely used for various unpowered vehicles.

Description

Electromagnetic booster for bicycle

The utility model is a kind of electric device that is used for bicycle.

Existing Electrical Bicycle generally is by vehicle body and independently motor and reduction gearing mechanism constitute.This design-calculated shortcoming: owing to have frictional transmission, so driving efficiency is low, complex structure, weight increases, the cost height.And, general indispensable custom-designed vehicle frame, this is unfavorable for existing bicycle and parts Quantity production in addition thereof.

The purpose of this utility model provides a kind of later-model bicycle driving device, and its energy actv. overcomes the shortcoming of common electric bicycle.

The purpose of this utility model is achieved in that on the common wheel steel ring what additional several ferromagnetic materials were made, protrude from the heel teeth of rim, form the flute profile rim, and on vehicle frame, fix an electromagnet, it is shaped as " Jiong " shape, and make the inboard of the heel teeth that protrudes on two magnetic poles of electromagnet and the rim or the outside along the radial array of rim, keep certain clearance between the two.It is passed through the master cock circuit turn-on and is turn-offed electromagnet by the impulse singla that sensor produced, and makes the quick again and again attraction of electromagnet lean on into its heel teeth, thus the drive wheels rotation.

Because power of the present utility model comes from the electromagnet that is fixed on vehicle frame and the direct interaction of flute profile rim, so eliminated transmission device; Because gapped between the magnetic pole of electromagnet and rim heel teeth,, improved efficient again so actuating device does not have friction.The utility model is an assisting device additional on original bicycle basis, thus can use on existing bicycle, thus reduced cost.

The utility model is illustrated by following embodiment and accompanying drawing.

Fig. 1 is the utility model Electrical Bicycle rear wheel frame lateral plan.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is sensor construction figure.

(1) is rim among the figure, and (2) are heel teeths, and (3) are electromagnet, and (4) are sensor stands, and (5) are tires, and (6) are signal sending elements, and (7) are signal receiving elements.

Several heel teeths that protrudes from rim (2) are fixed in the both sides of rim among Fig. 2 (1), and it is made by ferromagnetic material.The quantity of heel teeth, specification, geometric configuration can be decided according to the shape of rim.

Install " Jiong " shape electromagnet (3) (see figure 2) among Fig. 1 on the vehicle frame, and make heel teeth (2) arrangement in parallel of its two lower surface and flute profile rim.To keep certain clearance between the lower surface of electromagnet (3) and the heel teeth (2), (see figure 2), and on the position near heel teeth (2).One sensor stand (4) is installed, signal transmission, receiving element (6) is arranged, (7) (seeing Fig. 2, Fig. 3) on the support (4).Its effect is: when heel teeth (2) during, produce impulse singla near electromagnet (3), and trigger switch circuit rapidly, the conducting electromagnet, thus produce attraction to heel teeth (2); When heel teeth (2) by electromagnet (3) be drawn near the time stopcock circuit rapidly, make the electromagnet outage, heel teeth (2) relies on inertia to break away from electromagnet (3).

When having the bicycle of this mobility aid, use rides drive wheels as long as use earlier, and then energized, under the control of sensor and switch circuit, force the quick again and again heel teeth (2) that attracts the flute profile rim of electromagnet (3), thus the rotation that wheel is not stopped.

Both can constitute about the flute profile rim, also can constitute with rim is whole by the additional ferromagnet heel teeth of common rim.Or rim heel teeth, rim and spoke or the whole formation of disc.

Electromagnetic actuator device described in the utility model, the vehicle of all kinds of unpowered devices such as lock, band-type brake, axle lock that can be easily be used for rising.

Claims (4)

1, a kind of electromagnetism mobility aid that is used for bicycle and other human powered vehicle, the flute profile rim that this device is made up of rim (1) and heel teeth (2) and being fixed on the vehicle frame, the electromagnet (3) of sensor and switch circuit control constitutes, it is characterized in that having several ferromagnetic materials to make on the rim (1), protrude from the heel teeth (2) of rim, and make the inboard of two magnetic poles of electromagnet (3) and heel teeth (2) or the outside along the radial array of rim, keep certain clearance between magnetic pole and heel teeth.

2, electromagnetism mobility aid according to claim 1 is characterized in that rim heel teeth (2), constitutes with rim (1) is whole; Or rim heel teeth (2) and rim and spoke or the whole formation of disc.

3, electromagnetism mobility aid according to claim 1 is characterized in that rim heel teeth (2) can distribute in rim one side.

4, electromagnetism mobility aid according to claim 1 is characterized in that electromagnet (3) can have one or several onboard.

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