CN201211851Y

CN201211851Y - Pedal capable of sensing pedaling force

Info

Publication number: CN201211851Y
Application number: CNU2008200075510U
Authority: CN
Inventors: 洪万竹
Original assignee: JD Components Co Ltd
Current assignee: JD Components Co Ltd
Priority date: 2008-04-09
Filing date: 2008-04-09
Publication date: 2009-03-25
Anticipated expiration: 2018-04-09

Abstract

The utility model relates to a pedal capable of sensing the foot power, which is assembled on a treadle drive mechanism for an electric-aided bicycle, and the treadle drive mechanism bears the power form treadle and drives a crank to rotate; the pedal comprises a shaft lever pivotally arranged at one end of the crank to drive the crane to rotate, a magnetic induction group provided with a magnetic part and two magnetic induction parts and a plate body connected to the shaft lever for trampling and wrapping the shaft lever and the magnetic induction group, wherein the magnetic part is arranged at the other end of the shaft lever relative to the crank, the two magnetic induction parts are oppositely arranged on the magnetic part, and when the magnetic part is rotated along with the shaft lever, the magnetic field between the magnetic part and the shaft lever is changed, the two magnetic induction parts generate direction sensing signals. The utility model can enhance the security of riding of the electric-aided bicycle and the convenience for follow-up maintenance and replacement.

Description

But the pedal of perception legpower

Technical field

The utility model relates to a kind of electric booster bicycle, but is meant a kind of pedal of perception legpower especially.

Background technology

Under the influence that oil price climbs up and up, the energy-conservation vehicle have become popular focus, wherein, power-actuated electric booster bicycle is owing to possessed the advantage of pollution-free and low power consuming, therefore in recent years, no matter electric booster bicycle is the vehicle that are used to body-building, leisure or short distance, it is day by day generalizing on the market.

In general, electric booster bicycle than pattern, decides the size of its motor-assisted supply, so electric booster bicycle must be installed pedal force sensing system, with the size of sensing user foot legpower according to the power-assisted of user's sufficient legpower and default; And in the prior art, industry mainly is installed on various sensors driven wheel or rear axle, with the pressure that bears of sensing gear rotational speed or wheel shaft, and then converts sensing signal to control system, and is motor-assisted to determine.

But, above-mentioned sensing modes still exists the part shortcoming, rotating speed with the sensing driven wheel, when the user does not apply any sufficient legpower again, driven wheel still can be rotated further, then when the user does not trample in bicycle because of burst accident, system will be not the power-assisted of stop supplies motor immediately, relatively cause danger easily; On the other hand, with the pressure that bears of sensing wheel shaft, the physical construction of its installation is comparatively complicated, and is relatively also inconvenient in the maintenance; What therefore, prior art still remained to be improved locates.

The utility model content

But main purpose of the present utility model provides a kind of pedal of perception legpower, and it can improve the safety that electric booster bicycle drives.

But secondary objective of the present utility model provides a kind of pedal of perception legpower, and it is simple in structure, is to improve follow-up maintenance and the convenience that replaces with.

Edge is taking off the creation purpose before reaching, but the utility model provides a kind of pedal of perception legpower, and the foot that is installed in an electric booster bicycle is stepped on transmission device, and this foot is stepped on transmission device and born the strength that foot steps on and drive a crank and rotate; This pedal includes: an axostylus axostyle is arranged in an end of this crank, rotates to drive this crank; One magnetic strength group has a magnetic part and two magnetic strength spares, this magnetic part is located at the other end of this axostylus axostyle with respect to this crank, and this two magnetic strength spares relative positioning is in this magnetic part, when this magnetic part during with this spindle rotation, to magnetic field between the two be changed, and allow this two magnetic strength spare produce a sensing direction signal; And a plate body, be arranged in this axostylus axostyle for trampling, and coating this axostylus axostyle and this magnetic strength group.

The beneficial effects of the utility model are can improve the safety that electric booster bicycle drives, and improve follow-up maintenance and the convenience that replaces with.

More understand characteristics of the present utility model and effect for making, lift following examples now and cooperate graphic being described as follows:

Description of drawings

Fig. 1 is the exploded drawings of the utility model one preferred embodiment;

Fig. 2 is the partial exploded view of the utility model one preferred embodiment;

Fig. 3 is the partial schematic diagram of the utility model one preferred embodiment.

[primary clustering nomenclature]

Axostylus axostyle 10 socket parts 12

Circuit module 20 power elements 22

Magnetic strength group 30 magnetic parts 32 collars 322

Magnet 324 pedestals 34

Perforation 342 fixture blocks 344

Caulking groove 346 magnetic strength spares 36

Plate body 40 loam cakes 42 lower covers 44

The specific embodiment

At first, but the utility model is a kind of pedal of perception legpower, and the car body (figure does not show) that it is installed in a bicycle includes a battery, a CD-ROM drive motor, a primary controller and a foot and steps on transmission device.Wherein, battery is in order to provide bicycle required electric power, primary controller is electrically connected at battery and CD-ROM drive motor, takeoff output with the controlling and driving motor, foot is stepped on the bottom that transmission device is located at car body, and it bears user's sufficient legpower amount and drives a crank (figure does not show) rotation, and the compound fluted disc group of crank concentric (figure does not show), the fluted disc group is made up of a plurality of fluted discs and chain, and it also is connected in CD-ROM drive motor; By this, when the user trampled, crank bore sufficient legpower and rotates, perhaps also can be by primary controller controlling and driving motor outputting power, and allow bicycle advance.

Furthermore, pedal of the present utility model is applied to the crank that this foot is stepped on transmission device, tramples for the user, please refer to Fig. 1 to Fig. 2, and this pedal includes an axostylus axostyle 10, a circuit module 20, a magnetic strength group 30 and a plate body 40.

One termination of axostylus axostyle 10 is located at the end that foot is stepped on the crank of transmission device, and it can drive crank and rotate, and axostylus axostyle 10 then is provided with a socket part 12 with respect to the other end of crank.

Circuit module 20 is sheathed on axostylus axostyle 10, it has a power elements 22 and a microprocessor (figure does not show), power elements 22 is a small-sized electrical generator in present embodiment, collocation is used in axostylus axostyle 10, generate electricity with the rotation that utilizes axostylus axostyle 10, microprocessor is electrically connected at power elements 22, and its inside is provided with a transmission over radio part, the signal that microprocessor produced can be sent to primary controller, with the takeoff output of further controlling and driving motor; Wherein, microprocessor and power elements 22 are to be combined into same modular assembly with modular design in present embodiment.

Magnetic strength group 30 has a magnetic part 32, a pedestal 34 and two magnetic strength spares 36, magnetic part 32 is made up of with a plurality of magnet 324 collar 322, the collar 322 is arranged in the socket part 12 of axostylus axostyle 10, and rotate with axostylus axostyle 10, each magnet 324 is cylindrical shape and is embedded in the collar 322, and it distributes in the magnetic pole that the collar 322 is arranged in N continuous S; Pedestal 34 is located at circuit module 20, wears a perforation 342 in the middle of it, rotates for magnetic part 32, and the both sides of pedestal 34 are provided with a fixture block 344, and each fixture block 344 is provided with a caulking groove 346, is embedded for each magnetic strength spare 36; Each magnetic strength spare 36 is electrically connected at the microprocessor of circuit module 20, it is embedded at two caulking grooves 346 of pedestal 34, and the motor angle of about 90 degree in the position that is separated by, and each magnetic strength spare 36 is by the structure by pedestal 34, can not follow axostylus axostyle 10 and rotate, that is each magnetic strength spare 36 relative positionings are in magnetic part 32; Wherein, each magnetic strength spare 54 is a Hall magnetic strength device (Hall Sensor) in present embodiment.

Plate body 40 is made up of a loam cake 42 and a lower cover 44; it is arranged in circuit module 20 in present embodiment; certainly; plate body 40 also can directly be compound in axostylus axostyle 10; plate body 40 can coat protection axostylus axostyle 10, circuit module 20 and magnetic strength group 30; and be available for users to trample, and then drive the crank rotation by axostylus axostyle 10.

By by above-mentioned member, when the user drives bicycle, the user will trample in plate body 40, rotate and make axostylus axostyle 10 drive crank, at this moment, the magnetic part 32 of magnetic strength group 30 also can be along with axostylus axostyle 10 rotates, and each magnetic strength spare 36 relative positionings are in magnetic part 32, so but each magnetic strength spare 36 is with the pole change of each magnet 324 of induced magnetism part 32, and respectively obtain the flux change waveform of different phase sequences, that is produce a sensing direction signal, and then be back to the microprocessor of circuit module 20, whether microprocessor has the action of trampling by by the waveform in the sensing direction signal relatively and can judge the user, and trample to just changeing (advancing) or counter-rotating directions such as (retreating), be back to primary controller again; Wherein, the motor angle of about 90 degree at a distance of the position of each magnetic strength spare 36 and allow the waveform of each magnetic strength spare 36 sensings can compare four kinds of situations, with further by the microprocessor judges direction.

By this, what primary controller can carry out that bicycle advances controls, that is by by the measured signal of the utility model, and the outputting power of controlling and driving motor; That is to say, when user's both feet do not apply pressure to plate body 40, then magnetic strength group 30 will can not sense the waveform of any flux change, just can not produce the sensing direction signal yet, and the sensing direction signal is when counter-rotating, and primary controller all can stop CD-ROM drive motor, perhaps when the user leaves pedal because of the burst accident both feet, the utility model also can reach the design function of safety switch, and allows electric booster bicycle cut off the power supply immediately; Therefore, the utility model can allow the sufficient legpower sensing of electric booster bicycle certain more by sensing mode and installation position by the improvement legpower, and pedal of the present utility model install also simpler and easyly, and it is convenient to allow maintenance go up.

What this must be illustrated be, circuit module 20 is sheathed on axostylus axostyle 10 in present embodiment system with modular design, power elements 22 palpus collocation axostylus axostyles 10, generate electricity to utilize axostylus axostyle 10 to rotate, wherein, if the power elements of circuit module is one can store the object of electric energy, gold capacitor (figure does not show) as a battery (figure does not show) or a capacitor batteries form, then circuit module does not promptly need collocation to be located at axostylus axostyle 10, and can be located at plate body 40, by this, the utility model can lower the modularization production cost of circuit module 20.

In addition, the utility model also can respectively be installed in two magnetic strength spares 36 of magnetic strength group 30 loam cake 42 of plate body 40 and the inner peripheral surface of lower cover 44, and makes each magnetic strength spare relative positioning in magnetic part, and then each magnetic strength spare can sense the waveform of flux change equally; Moreover the utility model also can directly be conformable to axostylus axostyle with the pedestal of magnetic strength group, and allows pedestal spindle rotation relatively, that is each magnetic strength spare can be responded to flux change with respect to magnetic part; By this, the utility model all can be simplified member, and then also can lower production cost.

Concluding above-mentioned explanation can learn, uses the utility model on electric booster bicycle, makes the sensing of sufficient legpower more certain, and the utility model also can serve as safety switch, further improve the degree of safety that drives, and the utility model is simple in structure, can allows installation or maintenance go up convenient.

To sum up institute is old, and the utility model is taken off disclosed constituent components among the embodiment in preceding, only be casehistory, is not the scope that is used for limiting this case, the alternative or variation of other equivalent elements, and the claim that also should be this case contains.

Claims

1. but the pedal of a perception legpower, be installed in an electric booster bicycle, this bicycle includes a car body, a battery, a CD-ROM drive motor, a primary controller and a foot and steps on transmission device, this primary controller is electrically connected at this battery and this CD-ROM drive motor, and this foot is stepped on transmission device and born sufficient strength of stepping on and drive crank rotation; It is characterized in that this pedal includes:

One axostylus axostyle is arranged in an end of this crank, rotates to drive this crank;

One magnetic strength group, have a magnetic part and two magnetic strength spares, this magnetic part is located at the other end of this axostylus axostyle with respect to this crank, and this two magnetic strength spares relative positioning is in this magnetic part, when this magnetic part during with this spindle rotation, to magnetic field between the two be changed, and allow this two magnetic strength spare produce a sensing direction signal; And

One plate body is arranged in this axostylus axostyle for trampling, and is coating this axostylus axostyle and this magnetic strength group.

2. but according to the pedal of the described perception legpower of claim 1, it is characterized in that the position that is separated by between two magnetic strength spares of this magnetic strength group is the motor angle of 90 degree.

3. but according to the pedal of the described perception legpower of claim 1, it is characterized in that this magnetic strength group also has a pedestal, be located at this axostylus axostyle and not with this spindle rotation, this two magnetic part then is located at this pedestal.

4. but according to the pedal of the described perception legpower of claim 1, it is characterized in that the magnetic part of this magnetic strength group is made up of a collar and two magnet at least, this cover is located on the other end of this axostylus axostyle with respect to this crank, and with this spindle rotation, respectively this magnet then is embedded in this collar.

5. but according to the pedal of the described perception legpower of claim 1, it is characterized in that two magnetic strength spares of this magnetic strength group are installed in this plate body, and the motor angle of position of being separated by less than 180 degree.

6. but according to the pedal of the described perception legpower of claim 1, it is characterized in that, include a circuit module, have a power elements and a microprocessor, this microprocessor is electrically connected at this power elements and this magnetic strength group, it receives the sensing direction signal of handling this two magnetic strength spares institute sensing, and is provided with a transmission over radio part in this microprocessor, so that the sensing direction signal is sent to this primary controller.

7. but according to the pedal of the described perception legpower of claim 6, it is characterized in that the power elements of this circuit module is a gold capacitor.

8. but according to the pedal of the described perception legpower of claim 6, it is characterized in that the power elements of this circuit module is an electrical generator, and be installed in this axostylus axostyle, generate electricity with the rotation that utilizes this axostylus axostyle.

9. but according to the pedal of the described perception legpower of claim 1, it is characterized in that the magnetic strength spare of this magnetic strength group is a Hall magnetic strength device.