CN1268517C

CN1268517C - Improved torsion force indicator

Info

Publication number: CN1268517C
Application number: CNB021092494A
Authority: CN
Inventors: 李书贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-06
Filing date: 2002-03-06
Publication date: 2006-08-09
Anticipated expiration: 2022-03-06
Also published as: CN1442680A

Abstract

The present invention relates to an improved torsion force indicator, particularly to detection of footboard torsion force used for electric bicycles. The improved torsion force indicator is provided with a torsion force sensing rotary shaft which is connected with the inner part of a five-way pipe of a middle-segment vehicle frame and a driving fluted disc. Both ends of the torsion force sensing rotary shaft are respectively connected with footboards, namely the footboards can be driven to rotate by a trample mode. A crank connection block, an elastic steel plate and a torsion force indicator group are positioned on the inner surface of the driving fluted disc. The torsion force indicator group can accommodate a deformation quantity amplifier inside. The deformation quantity amplifier is in deformation by butting and pressing the elastic steel plate by a crank of the crank connection block to make the elastic steel plate press and move a resistance strain sheet in the deformation quantity amplifier. The deformation degree of the deformation quantity amplifier is used for providing the output of electric signals which correspond to torsion force deformation quantity when the torsion force sensing rotary shaft is stressed to rotate for detecting torsion force sensing electric signals and rotary direction signals of the footboards to a motor power controller of an electric vehicle for achieving effective electric outlet.

Description

Torsion force indicator

Technical field

The present invention is a kind of torsion force indicator, especially instigate the auxiliary power that is used for Electrical Bicycle, be a distortion and make a crank of crank link block compress spring steel plate by the stampede power of stretcher, this spring steel plate presses the deformation extent of the resistance strain gage in the deflection amplifier, provide the electrical signal output of the relative torsion deflection that desire was rotated when the torsion sensing rotating shaft is stressed rotated, in order to reach stable detecting effect.

Background technology

Press, Electrical Bicycle is one of traffic means of transport that rather is in fashion at present, is that particularly environmental protection ideas generally plants under the environment trend of the popular feeling deeply, and Electrical Bicycle quite has and replaces the main flow that bicycle becomes following light-duty walking-replacing tool gradually.Yet, in electric bicycle structure, the main power resources of desk are the accessory drives propulsion source such as electro-motor, therefore, must be apt to add the running of controlling this accessory drives propulsion source, can make Electrical Bicycle in running and mobility operation process, reach the effect of people's car one, increase the electric power energy consume on foot and increase the safety problem that personnel drive operation otherwise have only.

Yet, in general traditional electric bicycle structure, simple accessory drives propulsion source operating mode then is that this electronic accessory drives propulsion source (as motor) is installed in bicycle front-wheel or trailing wheel, by the control setup of opening (on) or the electronic accessory drives propulsion source of pass (off) conduct startup that is installed in the motor switch on the operating handle, point pressure by the rider and start this accessory drives propulsion source by operation, drop into the full-power auxiliary power via this accessory drives propulsion source, therefore, the horsepower output of this auxiliary power point and without suitable control and adjustment very easily causes meaningless power wastage.For instance, for example: when being that Electrical Bicycle starts, the bigger torsion of the essential input of this accessory drives propulsion source, so that auxiliary Electrical Bicycle running, or when descending or flat road surface were travelled, this accessory drives propulsion source must cut off fully not to be provided auxiliary power or drops into less auxiliary power.

In addition, above-mentioned known auxiliary power of electric bicycle outputting torsion control, because this input control signal is simple opening, close kenel, and input auxiliary power torsion also is maximum, and the actual stretcher that can't look this Electrical Bicycle is automatically trampled state and rotating speed adjusts and auxiliary, except very easily causing the waste of meaningless electric power and manpower, in the process that this Electrical Bicycle travels, the situation that also very easily produces auxiliary power moment input or cut off takes place, as starting and parking, change too fast because this accessory drives power comes from the torsion of moment input, make this Electrical Bicycle produce the state that rocks or shake shakiness, and can't make this Electrical Bicycle produce the effect of people's car one.

Moreover, or there are manufacturer thereby germinating to improve, structure and operating mode with the oiling handle, the accessory drives propulsion source auxiliary power of controlling in this Electrical Bicycle drops into size, no doubt can problem that improve its auxiliary power and torsion input be arranged more above-mentioned known the pressure by mode slightly with switch, but the input of operating this accessory drives propulsion source in one hand oiling mode, must judge the input size of refueling handle and controlling the accessory drives propulsion source with driver's visual state and experience to rotate, therefore, also can't reach fully and make Electrical Bicycle really look road conditions and actual torsion need state and drop into suitable power and torsion, when especially being to travel for a long time, easily make both hands muscle tight tired or because of emergency situations nervous out of control, rotate to maximum as refueling handle, can't playback immediately, cause operation go up to produce out of control and lead to unexpected storms.

In addition, aspect relevant previous patented technology document, as novel the 842 First Five-Year Plan of patent application case of Taiwan five or three No. eight " the foot-operated electronic auxiliary driving motor device of tending to act ", the power that then discloses a kind of auxiliary driving motor drops into mode, its shortcoming then as above-mentioned known to refuel the Electrical Bicycle that the handle mode controls, can't really be looked the effect that different situations and actual torsion demand reach suitable output auxiliary power; In addition, in US Patent the 5th, 900, No. 703 cases, then disclosed again and installed on the fluted disc that is the transmission of stretcher institute with some magnet, and on the vehicle frame correspondence position installing with the detecting structure of magnetic reed switch, in order to control startup (on) accessory drives power or cut-out (off) accessory drives power according to magnet on the fluted disc and the spacing induced signal between the magnetic reed switch on the vehicle frame, but its shortcoming is this accessory drives propulsion source, as motor horsepower output homogeneous, can't look actual the power that road conditions drop into different demands, therefore, being need not high-power and torsion input, but still need under the state that accessory drives power drops into, then need again and again by the mechanical brake control of arranging in pairs or groups, relatively, cause the consume of more inefficient power, cause the stroke range of Electrical Bicycle to be dwindled and the deterioration of efficiency of accessory drives power.

So the applicant is to collect related data because above-mentioned shortcoming, via assessing in many ways and consider, and to engage in the many years of experience of the industry accumulation, via constantly studying and revising, the beginning is designed the patent application of this kind actv. electric power outputting torsion detector.

Summary of the invention

Main purpose of the present invention promptly is that a kind of torsion force indicator is being provided, directly detect the actual stampede power of stretcher by torsion deformation element (straingage), decide the input power and the torque magnitude of auxiliary power of electric bicycle motor, but the torsion demand of trampling in order to do actual road conditions of actual response and driver, and suitably big or small auxiliary power and the resistance of input, can make Electrical Bicycle more smooth and easy on travelling, and make this accessory drives power have more efficient, and above-mentioned torsion deformation element (strain gage) is to fit on the spring steel plate, and press the deformation extent that resistance strain gage was produced in the deflection amplifier with this spring steel plate, in order to the electrical signal output of the torsion sensing rotating shaft relative torsion deflection that desire of stressed when rotation is rotated to be provided, again by a signal detection device, give the motor power controller of above-mentioned elec. vehicle in order to the torsion sensing electrical signal that detects stretcher and rotation direction signal, this reaches the output of actv. electric power.

Another purpose of the present invention is the torsion demand of trampling by the detecting stretcher, control the accessory drives power input of Electrical Bicycle, can make Electrical Bicycle control the output of accessory drives power in the process of moving fully by foot-operated strength, and reason is nervous not out of control and lead to accident, can guarantee the driving safety of Electrical Bicycle.

The present invention is used in the stretcher torsion detecting of battery-driven car, it is characterized in that having a torsion sensing rotating shaft, be positioned the interior and driving fluted disc place of five-way pipe of stage casing vehicle frame, and two ends is articulated with stretcher respectively; And, one crank link block, spring steel plate and torsion force indicator group are positioned on this driving fluted disc inner face, and the torsion force indicator group be can a ccontaining deflection amplifier in it, the contact jaw of its circuit and torsion sensing rotating shaft is for being connected, promptly can the mode of trampling make the footboard drives rotation, make a crank of crank link block compress spring steel plate and be a distortion, and the electrical signal output of the relative torsion deflection can provide the stressed rotation of torsion sensing rotating shaft according to its deformation extent the time.

The present invention is the electrical signal output of the relative torsion deflection when providing the stressed rotation of torsion sensing rotating shaft by its deformation extent, and in order to detect the torsion sensing electrical signal of stretcher, this reaches the output of actv. electric power.Export the auxiliary Electrical Bicycle starting of bigger power and torsion or the running of going up a slope, make the driver when running is handled, really can reach laborsaving and alleviate the effect of physical load.Can make Electrical Bicycle control the output of accessory drives power in the process of moving fully by foot-operated strength, auxiliary Electrical Bicycle running, driving safety.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the present invention.

Fig. 2 is a stereo appearance figure of the present invention.

Fig. 3 is the three-dimensional exploded view of signal detection device of the present invention.

Fig. 4 is the side cutaway view of torsion sensing rotating shaft of the present invention and signal detection device.

Fig. 5 is the deflection amplifier circuit figure of torsion force indicator group of the present invention.

Fig. 6 tramples preceding action scheme drawing for crank link block of the present invention.

Action scheme drawing when Fig. 7 tramples for crank link block of the present invention.

Fig. 8 is a preferred embodiment lateral plan of the present invention.

Among the figure 1 is the torsion sensing rotating shaft, and 11 is steering component, and 111 is contact jaw, 112 is insulating collar, and 113 is coupling end, and 114 is wire casing, 12 is the signal cable, and 2 is the crank link block, and 21 is crank, 22 is fixed block, and 3 is spring steel plate, and 4 is the torsion force indicator group, 40 is the gap, and 41 is groove, and 42 is the deflection amplifier, 421 is resistance strain gage, and 422 is resistance strain gage, and 5 is the signal detection device, 50 is hole, and 51 is contact rod, and 52 for turning to sensing element, 53 is mouth, and 54 is insulated shell, and 6 is the torsion sensing element, A is an Electrical Bicycle, and A1 is a vehicle frame, and A11 is the five-way pipe, A111 is a slotted eye, and A2 is for driving fluted disc, and A3 is a stretcher, A4 is a cable, A5 is a motor controller, and A6 is an auxiliary driving motor, and A7 is a bolt.

The specific embodiment

For reaching above-mentioned purpose and structure, technological means that the present invention adopts and effect thereof, drawing now illustrates in detail that with regard to preferred embodiment of the present invention its step and function are as follows, understand fully in order to do profit.

See also shown in first, second, third and fourth figure, torsion force indicator of the present invention, comprise a torsion sensing rotating shaft 1, be installed in the vehicle frame A1 stage casing five-way pipe A11 partly of Electrical Bicycle A (shown in the 8th figure), and this torsion sensing rotating shaft 1 is provided with a plurality of steering components 11 and is provided with contact jaw 111 in the steering component surface, and contact jaw 111 forms binding with the deflection amplifier that is positioned at the torsion force indicator group.This contact jaw 111 is that conductor loops is on the steering component 11 that is incorporated into this torsion sensing rotating

shaft

1, and 111 of each contact jaws then separate with an insulating collar 112, steering component 11 is then constituted by magnetics, infrared inductor or other equivalence element, and is embedded in this torsion sensing rotating shaft 1 inside; Moreover, the two side ends of torsion sensing rotating shaft 1 is respectively equipped with a coupling end 113, behind the driving fluted disc A2 that is set in Electrical Bicycle A, link stretcher A3 respectively, and see through some bolt A7 locking binding one crank link blocks 2 simultaneously on this driving fluted disc A2 inner face, and on the position of cooresponding two reverse 180 degree of these crank link block 2 peripheries, extend a crank 21 respectively, and then link a fixed block 22 in the inboard of a crank 21 wherein, 22 of this fixed blocks also are fixed in and drive fluted disc A2 inner face, and the outside of side crank 21 links a spring steel plate 3 in addition, these spring steel plate 3 one sides then also are fixed in torsion force indicator group 4 one sides, and torsion force indicator group 4 has a groove 41, for can a ccontaining deflection amplifier 42 in it, its circuit is binding mutually with the contact jaw 111 of torsion sensing rotating shaft 1, with when the torsion sensing rotating shaft 1 stressed rotation, producing relative torsion sensing electrical signal exports via contact jaw 111, and above-mentioned torsion force indicator group 4 also is fixed in driving fluted disc A2 inner face, the continuous signal detection device 5 that utilizes, be provided with plurality of holes 50 in the surface, pass with bolt A7 and to lock among the default slotted eye A111 in this five-way pipe A11 below, and, this five-way pipe appearance is provided with the signal detection device, give the motor power controller of Electrical Bicycle in order to the torsion sensing electrical signal that detects stretcher and rotation direction signal, this signal detection device 5 is provided with a plurality of contact rod 51 and turns to sensing element 52, and cover is covered with an insulated shell 54; Wherein, this contact rod 51 is on having, following telescopic resilience, to stretch into from slotted eye A111 in the five-way pipe A11 and be contacted with the contact jaw 111 and the steering component of this torsion sensing rotating shaft 1 respectively, to draw the torsion sensing electrical signal that the deflection amplifier 42 that connects torsion force indicator group 4 is exported, and connect among the motor power controller A5 that a cable A4 exports Electrical Bicycle A to (consulting shown in the 8th figure) via a mouth 53, for the control reference of this motor power controller A5 as power and torsion output, and this turns to the steering component 11 in sensing element 52 and the torsion sensing rotating shaft 1 corresponding mutually, just to change in this torque rotary shaft 1 or to get in touch veer when running, respond to the different electrical signals that turns to respectively, and export among the motor power controller A5 via above-mentioned mouth 53, so that being provided, this motor controller A5 does the differentiation reference of Electrical Bicycle A rotation direction or the rotating speed and the speed of a motor vehicle.

Please cooperate shown in the 5th figure again, detailed scheme circuit for the deflection amplifier 42 of above-mentioned torsion force indicator group 4, wherein, power supply BATTERY introduces among this motor power controller A5 certainly through this contact jaw 111, in other words, above-mentioned contact jaw 111, have at least two to be the input end of power end BATTERY, so that the operating voltage of whole deflection amplifier 42 to be provided, and, this deflection amplifier 42 comprises at least two resistance strain gages 421 and 422, the resistance strain gage of this deflection amplifier is the variable resistance kenel on circuit, change with this torsion sensing rotating shaft 1 stressed rotation value of having a resistance, can treat as respectively on electrical specification is a variable rheostat element, and, this resistance strain gage 421 and 422 and resistor R 1 and R3 constitute an electric bridge networking, and draw its detecting current potential by detecting end points B1 and B2 again, and above-mentioned deflection amplifier 42 comprises a plurality of op amp U1 and U2, to cooperate resistor R 4, R5, R6, R7, R8, R9 and variable rheostat VR2, form a differential amplification networking, connect the current potential input of detecting end points B1 and B2 in the above-mentioned electric bridge networking to draw, and by the mouth U21 of this op amp U2, the electrical signal that will change with respect to torsion is via above-mentioned contact jaw 111 motor power controller A5 that export among the above-mentioned Electrical Bicycle A wherein.

Please consult the 6th again, shown in seven figure, when stretcher A3 starting trample and each time the application of force trample in the process forward, must overcome the damping elastic force of this crank link block 2 and spring steel plate 3 in advance, can make this driving fluted disc A2 be driven running, and a wherein end of this

spring steel plate

3 and 4 of torsion force indicator groups are formed with a gap 40, for supplying the torsion sensing element to place in it and being fixed on the spring steel plate, and utilize a torsion sensing element 6 to place between this gap 40 and be fixed on the spring steel plate 3, spring steel plate 3 is pushed in crank 21 rotations by crank link block 2, make the variable in distance of 6 of the gap 40 of 4 of itself and torsion force indicator groups and this torsion sensing elements, making this torsion sensing element 6 produce relative induced voltage signal changes, as the sensor signal of torsion variation, and the sensor signal that torsion is changed is sent to deflection amplifier 42; In addition, one side surface of this torsion sensing rotating shaft 1 laterally cutter is provided with a wire casing 114 (shown in first figure), bury underground fixing for a signal cable 12, one end of this signal cable 12 then is linked to the contact jaw 111 of above-mentioned torsion sensing rotating shaft 1, the other end then is linked to deflection amplifier 42, so the contact jaw 111 of torsion sensing rotating shaft 1 can conduct the binding electrical signal, and its bonded assembly electrical signal is sent to signal detection device 5 links the motor power controller A5 that is sent to this Electrical Bicycle A.

When Electrical Bicycle A in go up a slope or the process of starting in, this stretcher A3 to trample application of force strength bigger, so the gap 40 that makes 4 of spring steel plate 3 and torsion force indicator groups in this crank link block 2 and the variable in distance change of 6 of this torsion sensing elements are greatly, in other words, it is also higher that this torsion sensing element 6 is responded to the voltage signal variable quantity that obtains, and after via this deflection amplifier 42 voltage signal being amplified, after being sent to the contact jaw 111 of torsion sensing rotating shaft 1, conduct to signal detection device 5 (shown in first figure) again, be resent to the motor power controller A5 of Electrical Bicycle A by signal detection device 5, make this motor power controller A5 control auxiliary driving motor A6 (seeing also shown in the 8th figure), export the auxiliary Electrical Bicycle A starting of bigger power and torsion or the running of going up a slope, make the driver when running is handled, really can reach laborsaving and alleviate the effect of physical load.

In addition, when Electrical Bicycle A is in flat road surface or descent run, this stretcher A3 to trample application of force strength less or be zero (the not application of force), so the variable in distance of 6 of the gap 40 of 4 of spring steel plate 3 in this crank link block 2 and torsion force indicator groups and this torsion sensing elements diminished or do not change, in other words, it is also less or be zero that this torsion sensing element 6 is responded to the voltage signal variable quantity that obtains, and be sent to the contact jaw 111 of torsion sensing rotating shaft 1 via this deflection amplifier 42 after, conduct to signal detection device 5 (shown in first figure) again, be resent to the motor power controller A5 of Electrical Bicycle A by signal detection device 5, make this motor power controller A5 control auxiliary driving motor A6, drop into less power and torsion and make flat road surface or descent run to cooperate Electrical Bicycle A, or also can decide the usefulness of the vehicle operation direction and the detecting speed of a motor vehicle by the sensing element 52 that turns in the steering component 11 in this torsion sensing rotating shaft 1 and this signal detection device 5, in addition, steering component 11 is one or above sensing element composition, when stretcher A3 drives torsion sensing rotating shaft 1, its steering component 11 is followed rotation, the message that then turns to sensing element 52 to detect is successional, Electrical Bicycle A is rotated, if detectable signal does not then allow Electrical Bicycle A rotate when being not continuity, this prevents that car stopping time stretcher A3 from gently stepping on situation that generation dashes cruelly and producing and cause accident, and makes the driver can reach power saving when running operation and guarantee the effect of traffic safety.

Claims

1. torsion force indicator is used in the stretcher torsion detecting of battery-driven car, it is characterized in that it has a torsion sensing rotating shaft, be positioned in the five-way pipe of stage casing vehicle frame and drive the fluted disc place, and two ends is articulated with stretcher respectively; And, one crank link block, spring steel plate and torsion force indicator group are positioned on this driving fluted disc inner face, and the torsion force indicator group be can a ccontaining deflection amplifier in it, the contact jaw of its circuit and torsion sensing rotating shaft is connected, promptly can the mode of trampling make the footboard drives rotation, make a crank of crank link block compress spring steel plate and be a distortion, and the electrical signal output of the relative torsion deflection can provide the stressed rotation of torsion sensing rotating shaft according to its deformation extent the time.

2. torsion force indicator as claimed in claim 1 is characterized in that this torsion sensing rotating shaft is provided with a plurality of steering components and is provided with contact jaw in the steering component surface, and contact jaw then forms with the deflection amplifier that is positioned at the torsion force indicator group and links.

3. torsion force indicator as claimed in claim 1 is characterized in that this five-way pipe appearance is provided with the signal detection device, gives the motor power controller of Electrical Bicycle in order to the torsion sensing electrical signal that detects stretcher and rotation direction signal.

4. torsion force indicator as claimed in claim 1 is characterized in that this signal detection device has a plurality of contact rods and turns to sensing element, to stretch into contact jaw and the steering component that is contacted with this torsion sensing rotating shaft in the five-way pipe respectively.

5. torsion force indicator as claimed in claim 2, the steering component that it is characterized in that this torsion sensing rotating shaft surface is magnetics or infrared inductor.

6. torsion force indicator as claimed in claim 2 is characterized in that being respectively equipped with an insulating collar between each contact jaw on this torsion sensing rotating shaft surface.

7. torsion force indicator as claimed in claim 1 is characterized in that including at least two resistance strain gages in this deflection amplifier.

8. torsion force indicator as claimed in claim 7 is characterized in that the resistance strain gage of this deflection amplifier is the variable resistance kenel on circuit.

9. torsion force indicator as claimed in claim 1 is characterized in that forming between the spring steel plate of this crank link block and torsion force indicator group a gap, for placing in it and be fixed on the shell fragment steel plate for the torsion sensing element.

10. torsion force indicator as claimed in claim 1 is characterized in that the torsion sensing electrical signal that the gap of this crank link block is responded to, and the contact jaw that sees through the torsion sensing rotating shaft is sent to the signal detection device.