CN201189940Y

CN201189940Y - Pedal capable of sensing pedaling force

Info

Publication number: CN201189940Y
Application number: CNU200820006729XU
Authority: CN
Inventors: 洪万竹
Original assignee: JD Components Co Ltd
Current assignee: JD Components Co Ltd
Priority date: 2008-02-18
Filing date: 2008-02-18
Publication date: 2009-02-04
Anticipated expiration: 2018-02-18

Abstract

The utility model relates to a pedal capable of sensing pedal force, which is assembled in the pedal transmission mechanism of an electric-driven bicycle. The pedal transmission mechanism bears the pedal force and drives a crank to rotate; the pedal comprises a shaft lever, a first plate body and a second plate, and a magnetic inductive group; wherein, the shaft lever is combined at one end of the crank to drive the crank to rotate; the first plate body and the second plate body are connected with the shaft lever for being pedaled, and a fine gap is arranged between the first plate body and the second plate body; the magnetic inductive group is provided with a magnetic inductive element and a magnetic body which are all pressed by the first plate body and the second plate body so that the distance between the magnetic inductive element and the magnetic body is changed, and a pedal sensing signal is generated by the magnetic inductive element. Therefore, the utility model can improve the riding safety of the electric-driven bicycle, and is accurate at pedal force sensing.

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

Press, 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 be power-assisted according to user's sufficient legpower and default than pattern, decide 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; And in the known technology, 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; Therefore, known technology still remains to be improved part.

The utility model content

But the purpose of this utility model is to provide a kind of pedal of perception legpower, and improving the safety that electric booster bicycle drives, and user's sufficient legpower sensing is certain more, and simple in structure, is convenient to change and maintenance.

For achieving the above object, but the pedal of the perception legpower that the utility model provides, 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; Wherein, this pedal includes:

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

One first plate body and one second plate body are arranged in this axostylus axostyle for trampling, and have a finedraw between this first, second plate body; And

One magnetic strength group has a magnetic strength spare and a magnetic substance, is subjected to the compressing of this first plate body and second plate body respectively, distance is between the two changed, and allow this magnetic strength spare produce a legpower sensing signal.

But the pedal of described perception legpower wherein also includes a circuit module, has a power elements and a microprocessor, and this microprocessor is electrically connected at this power elements and this magnetic strength group, and it receives the legpower sensing signal of handling this magnetic strength spare institute sensing.

But the pedal of described perception legpower wherein also is provided with a transmission over radio part, so that the legpower sensing signal is sent to primary controller in the microprocessor of this circuit module.

But the pedal of described perception legpower, wherein the power elements of this circuit module is a gold capacitor.

But the pedal of described perception legpower, wherein the power elements of this circuit module is an electrical generator, and is installed in this axostylus axostyle, generates electricity with the rotation that utilizes this axostylus axostyle.

But the pedal of described perception legpower, wherein the magnetic strength spare of this magnetic strength group is a Hall magnetic strength device (HallSensor).

But the pedal of described perception legpower, wherein this magnetic strength group also has a clamp, is arranged in this axostylus axostyle, and this clamp has two ears that separate, the lateral surface of this two ear respectively fits in this first, second plate body, and this magnetic strength spare and magnetic substance are located at the medial surface of this two ear respectively.

Synthetically say, but the pedal of perception legpower provided by the utility model, the foot that is installed in an electric booster bicycle is stepped on transmission device, and this foot is stepped on transmission device and is born sufficient strength of stepping on and drive crank rotation; Wherein, this pedal includes: an axostylus axostyle is compound in an end of this crank, rotates to drive this crank; One first plate body and one second plate body are arranged in this axostylus axostyle for trampling, and have a finedraw between this first, second plate body; And one the magnetic strength group have a magnetic strength spare and a magnetic substance, be subjected to the compressing of this first plate body and second plate body respectively, distance is between the two changed, and allows this magnetic strength spare produce a legpower sensing signal.

Concluding above-mentioned explanation can learn, uses the utility model on electric booster bicycle, is to make 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.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the utility model one preferred embodiment.

Fig. 2 is the three-dimensional combination figure of the utility model one preferred embodiment.

Fig. 3 is the part sectional view of the partial component of the utility model one preferred embodiment.

Fig. 4 is the partial exploded view of another preferred embodiment of the utility model.

Primary clustering nomenclature in the accompanying drawing:

Axostylus axostyle 10

Axis part 11

Circuit module 20

Power elements 22

The first plate body 30﹠amp; 30A

Junction surface 32

Stampeding section 34

The second plate body 40﹠amp; 40A

Junction surface 42

Stampeding section 44

Magnetic strength group 50﹠amp; 50A

Clamp 52

Ear 522

Magnetic strength spare 54﹠amp; 54A

Magnetic substance 56﹠amp; 56A

Finedraw C

The specific embodiment

For more understanding characteristics of the present utility model and effect, lift following examples and conjunction with figs. and be described as follows.

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 several fluted discs and chain, and it also is connected in CD-ROM drive motor; Thus, when the user trampled, crank bore sufficient legpower and rotates, and perhaps also can be advanced by bicycle by fluted disc group transmission force then by primary controller controlling and driving motor outputting power.

Furthermore, pedal of the present utility model is applied to the crank that this foot is stepped on transmission device, trample for the user, please refer to Fig. 1 to Fig. 3, this pedal includes that axostylus axostyle 10, a circuit module 20, one first plate body 30, one second plate body 40 and a magnetic strength group 50.

Axostylus axostyle 10 has an axis part 11, is compound in the end that foot is stepped on the crank of transmission device, and axostylus axostyle 10 can and drive crank relative to the crank rotation and rotate.

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.

First, second plate body 30﹠amp; 40 all have two junction surface 32﹠amp; 42, respectively be arranged in the both sides of the power elements 22 of circuit module 20, and the phase mutual connection supports up and down, each junction surface 32﹠amp; 42 extend to form a stampeding section 34﹠amp forward; 44, each stampeding section 34﹠amp; 44 have a finedraw C apart, each stampeding section 34﹠amp; 44 are available for users to trample, and then drive the crank rotation by axostylus axostyle 10.

Magnetic strength group 50 has a clamp 52, a magnetic strength spare 54 and a magnetic substance 56, and clamp 52 is arranged in the power elements 22 of circuit module 20, and it has two ears of being separated by 522, and the lateral surface of each ear 522 fits in first, second plate body 30﹠amp; 40 stampeding section 34﹠amp; 44 medial surface, magnetic strength spare 54 and magnetic substance 56 are located at the medial surface of each ear 522 respectively, magnetic strength spare 54 is electrically connected at the microprocessor of circuit module 20, but the flux change of its sensing magnetic substance 56 and produce a legpower sensing signal, wherein, magnetic strength spare 54 is a Hall magnetic strength device (Hall Sensor) in present embodiment.

By above-mentioned member, when the user drives bicycle, user's sufficient legpower will apply pressure to the stampeding section 34﹠amp of first plate body 30 or second plate body 40; 44, make each stampeding section 34﹠amp; 44 finedraw C dwindles relatively, two ears 522 of the clamp 52 of related compressing magnetic strength group 50 of while, so also changed the distance of 56 of magnetic strength spare 54 and magnetic substances, but the flux change of its relative magnetic substance 56 of magnetic strength spare 54 sensings then, and obtain the legpower sensing signal, and the legpower sensing signal is back to the microprocessor of circuit module 20, is sent to primary controller by microprocessor again; In other words, the utility model is promptly used the slight distance variation that sufficient legpower compressing is produced, again by the flux change of 56 of magnetic strength spare 54 sensings and magnetic substances, to obtain the legpower sensing signal, thus, what primary controller can carry out that bicycle advances controls, that is by the measured signal of the utility model, and the size of controlling and driving motor outputting power.

Wherein, when user's both feet did not apply pressure to first plate body 30 or second plate body 40, primary controller 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 the sensing mode and the installation position of 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 to be sheathed on axostylus axostyle 10 with modular design in present embodiment, 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 first plate body 30 or second plate body 40, and first plate body 30 and second plate body 40 also can be arranged in axostylus axostyle 10, and thus, the utility model can lower the modularization production cost of circuit module 20.

In addition, the utility model also can change as follows, as shown in Figure 4, itself and previous embodiment difference are: the magnetic strength spare 54A of magnetic strength group 50A and magnetic substance 56A are installed in the first plate body 30A and the second plate body 40A respectively, magnetic strength spare 54A also is electrically connected at the circuit module (not shown), thus, magnetic strength spare 54A and magnetic substance 56A also can be subjected to the win the second place compressing of plate body 40A of the first plate body 30A, distance is between the two changed, then magnetic strength spare 54A gets final product the sensing flux change, thus, the utility model can be simplified member, and then also can lower production cost.

In sum, the utility model is a casehistory only in the constituent components of preceding taking off described in the embodiment, is not to be used for limiting scope of the present utility model, the substituting or change of other equivalent elements, and the claim scope that also should be the utility model application contains.

Claims

But 1, a kind of pedal of perception legpower, be installed in an electric booster bicycle, it is characterized in that, 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; Wherein, this pedal includes:

One axostylus axostyle is compound in an end of this crank, drives this crank and rotates;

One first plate body and one second plate body are arranged in this axostylus axostyle for trampling, and have a finedraw between this first, second plate body; And

One magnetic strength group has a magnetic strength spare and a magnetic substance, is subjected to the compressing of this first plate body and second plate body respectively, distance is between the two changed, and allow this magnetic strength spare produce a legpower sensing signal.
But 2, according to the pedal of the described perception legpower of claim 1, it is characterized in that, wherein 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, receives the legpower sensing signal of handling this magnetic strength spare institute sensing.
But 3,, it is characterized in that, wherein be provided with one in the microprocessor of this circuit module the legpower sensing signal is sent to the transmission over radio part of primary controller according to the pedal of the described perception legpower of claim 2.
But according to the pedal of the described perception legpower of claim 2, it is characterized in that 4, wherein the power elements of this circuit module is a gold capacitor.
But according to the pedal of the described perception legpower of claim 2, it is characterized in that 5, wherein the power elements of this circuit module is an electrical generator, and be installed in this axostylus axostyle, utilize the rotation of this axostylus axostyle to generate electricity.
But according to the pedal of the described perception legpower of claim 1, it is characterized in that 6, wherein the magnetic strength spare of this magnetic strength group is a Hall magnetic strength device.
But 7, according to the pedal of the described perception legpower of claim 1, it is characterized in that, wherein this magnetic strength group also has a clamp, be arranged in this axostylus axostyle, this clamp has two ears that separate, the lateral surface of this two ear respectively fits in this first, second plate body, and this magnetic strength spare and magnetic substance are located at the medial surface of this two ear respectively.