CN1348898A - Controller for engine-assisted bicycle - Google Patents

Abstract

The present invention relates to control device of moped bicycle, it includes bicycle frame, chain and a power auxiliary device on bicycle frame and control circuit, a control device if set on bicycle frame, said control device includes a fixed frame, a rocking arm, a contact gear wheel, wire and an elastic element, in which the rocking arm is hinged on fixed frame, the contact gear wheel is set on end of rocking arm, one end of wire connects the rocking arm and the other end connects with control circuit, one end of elastic element connects on rocking arm, the other end connects with fixed frame. Advantages: simple structure, low cost, saving power output.

Description

The control setup of engine-assisted bicycle

The present invention relates to a kind of power auxiliary controller of bicycle, be meant a kind of power auxiliary controller of bicycle that adopts mechanical control method especially.

Press, cause the main reason of air-polluting in the past, be a large amount of waste gas of vehicle emissions, therefore for solving the day by day serious problem of aerial contamination, the end is come can be more and more ardenter for the demand of the free of contamination vehicle.

The vehicle of compliance with environmental protection requirements, be bicycle without doubt, but, drive bicycle and must rely on manpower fully, therefore be subject to the physical limited of people, make bicycle and be not suitable for long-distance driving, and the number of teeth ratiometric gap of the front and back fluted disc of Regular Bicycle is considerably big, so, make the bicycle starting time very require great effort, and very consume power during climbing, even when forcing the excessive slope of the gradient, just can't continue again to drive, and automobile-used mode of leading car gets over the slope down, has therefore caused sizable inconvenience.

Be unsuitable for long-distance driving for solving standard bicycle, starting consumption power, and the hypodynamic shortcoming of climbing have many engine-assisted bicycles to occur in recent years.The design concept that engine-assisted bicycle is main, borrow the auxiliary power of electro-motor, the light speed of riding out on flat road, during toward bicycle starting or climbing, auxiliary power is provided, so that the rider must not expend too great strength, just can start to walk rapidly, and can climb up the slope with not too requiring great effort gas.

Engine-assisted bicycle is different with the design concept of electric locomotive, engine-assisted bicycle adopts the design of manpower and electro-motor mixed drive, its power assist system can in time provide an amount of auxiliary power when bicycle starting, climbing and acceleration etc. need expend strength; And when bicycle running during in flat road surface, then can be with the minimizing of exerting oneself of electronic servo-motor, or stop the output of power; Then stop takeoff output during descending fully, have both the muscle power of saving the rider simultaneously, and save the purpose of unnecessary power consumption so as to reaching.

Therefore, the motor of engine-assisted bicycle and volume of battery must taper to minimum degree, so that when adopting manually driven, power assist apparatus and battery can not become the too big burden of rider, and power assist apparatus must can be rapidly and is correctly detected the variation of bicycle living load state, and the takeoff output of control power-assisted motor can cooperate the living load state variation of bicycle and changes.

The used control setup of the engine-assisted bicycle of commonly using mainly can be divided into: torsion controllable type power-assist system, speed detection type power assist system, torsion and speed double re-detection type power-assist system, and manual type power assist system.No matter be the power assist apparatus of aforementioned torsion control, speed test format, it is to utilize torsion or speed detector mostly, with the torsion or the rate conversion of bicycle is the output of electric signal, then, relend the computing of a microcomputer apparatus and control software, the electric signal output of detector is converted to a control signal, with the takeoff output size of control electro-motor.

A kind of design that quite meets the environmental protection notion though the notion of engine-assisted bicycle be can yet be regarded as,, the used control setup of the engine-assisted bicycle of commonly using still has appreciiable problem.

At first, the control setup that the engine-assisted bicycle of commonly using is used, micro computer and complicated control circuit owing to must arrange in pairs or groups, and the computing of the control software of must arranging in pairs or groups, can control the output of power-assisted motor power, it not only makes the structure of control setup complicate and cost becomes quite high, besides the control action of micro computer, and can't meet fully with the changing condition of bicycle living load, therefore, start to walk at bicycle, or when climbing and outputting power in time, and cause the starting of bicycle and grade climbing performance not good.

Simultaneously, the control setup of commonly using is controlled the size of the takeoff output of power-assisted motor usually in the mode of linear change, perhaps only be the output of controlling power merely in the mode of intermittent takeoff output, therefore, still be in operative condition with all strength at bicycle underloading stage power-assisted motor, or export unnecessary power, therefore can cause the waste of power, and make that the power consumption of engine-assisted bicycle is too fast, and have influence on the distance of continuation of the journey.

In addition, the control setup of commonly using generally has the sluggish phenomenon of control, it not only makes the bicycle starting slowly, and when bicycle is braked, the power-assisted motor still can drive the bicycle segment distance of going ahead, therefore can make the distance of brake prolong, brake take place very incessantly even, or sliding partially unsafe condition.

And, the control setup of general engine-assisted bicycle mostly is the structure that can't adjust greatly, and the formula of its controlling computer has fixing operation mode, therefore, can be considerably difficult if will change the master mode of takeoff output, so, the adjustment of the control system of the feasible engine-assisted bicycle of commonly using is difficult for, and can't allow the user adjust the takeoff output pattern of power assist apparatus according to individual's demand, so, for strong rider, the power that power assist apparatus output is too much, just can cause unnecessary energy dissipation, and the rider also can't reach the purpose of motion fully; And the rider more weak for muscle power, and enough auxiliary powers can't be provided, and cause the burden of rider's muscle power.

Owing to above reason, therefore, the feasible used control setup of commonly using of engine-assisted bicycle, and can't reach the purpose of the auxiliary power that suitable size is provided in good time fully, therefore, the engine-assisted bicycle device of some has one of other installing can use manually operated power take-off valve, so that the rider can select the takeoff output pattern of power assist apparatus voluntarily, yet, use this method suddenly can increase the complexity of engine-assisted bicycle structure, and, can promote rider's operation inconvenience on the contrary.

This shows that the used control setup of the engine-assisted bicycle of commonly using obviously has improved necessity, the inventor in view of this, be to think hard funiculus, active research is engaged in the experience that Related product is researched and developed for many years, and, develop finally and the present invention through constantly test and improvement.

Main purpose of the present invention is to provide a kind of control setup of engine-assisted bicycle, adopts simple structure, control setup with low cost.

Another purpose of the present invention is to provide a kind of control setup of engine-assisted bicycle, can effectively detect the bicycle living load and change, and be quick on the draw, and can promote engine-assisted bicycle starting, grade climbing performance and the output of saving in power.

Another object of the present invention is to provide a kind of control setup of engine-assisted bicycle, can adjust voluntarily,, reach the different operation modes demand to meet various user demands for the user.

The object of the present invention is achieved like this: a kind of control setup of engine-assisted bicycle, comprise bicycle rack, power assist apparatus on chain and the bicycle rack and a control circuit, it is characterized in that: also on bicycle rack, be provided with a control setup, this control setup comprises a fixed mount, a rocking arm, a contact gear, a lead-in wire and an elastic element, and wherein, rocking arm is articulated on the fixed mount, the contact gear is arranged at the rocking arm end, and is contacted with the epimere part of this cycle chain; The end that goes between is connected on this rocking arm, and the other end is connected with control circuit, and an elastic element one end is connected on the rocking arm other end Connection Bracket.

Described fixed mount is a support body that can be fixed on the cycle frame.

Described fixed mount is provided with setting device, and it comprises an adapter plate and a plus-minus screw, and this plus-minus screw is locked on this adapter plate, and its end is connected with this elastic element.

The contact arm of the hypomere that described rocking arm comprises, the draft arm of epimere and a stud shaft, the terminal contact gear that connects of this contact arm, this draft arm is terminal to be connected with elastic element, and be connected with this lead-in wire, this stud shaft is arranged at the position that this contact arm is connected with this draft arm, and is fixed on the aforementioned fixation frame.

Described draft arm is provided with a connecting piece, and the length direction of this draft arm of upper edge of this connecting strap is provided with most draw-in grooves.

Described lead-in wire is sheathed in the conduit, and this catheter tip is provided with a plus-minus screw.

Described contact gear and chain engages.

Owing to adopt such scheme: simple structure, with low cost, and can promote engine-assisted bicycle starting, grade climbing performance and the output of saving in power.

The present invention is for reaching above-mentioned and other purpose, and the technological means that certain adopted, element and effect thereof adopt preferred embodiment now, cooperates correlative type to be described in detail as follows.

Fig. 1 is the lateral plan of the engine-assisted bicycle of control setup of the present invention.

Fig. 2 is the combination stereogram of control setup of the present invention.

Fig. 3 is the lateral plan of control setup of the present invention under bicycle light load state.

Fig. 4 is the lateral plan of control setup of the present invention under bicycle heavy load state.

Fig. 5 is the action scheme drawing of the adjustment mode of control setup of the present invention.

As shown in Figure 1, be engine-assisted bicycle of the present invention, wherein mainly comprise: a power assist apparatus 20, be installed on a bicycle rack 10 on, and rear wheel 11 that can this bicycle rack 10 of transmission is to provide auxiliary power; And a control circuit 30 (genus prior art), be arranged on this bicycle, can be in order to control the takeoff output situation of this power assist apparatus 20; And control setup 40, be arranged near the position of the chain 12 of this bicycle, can borrow the tension variation of chain 12, and detect the variable condition of bicycle torsion, and control this control circuit 30, the control signal of this control circuit 30 outputs is changed, and make the takeoff output state of this power assist apparatus 20 cooperate the variable condition of the living load of bicycle.

As shown in Figure 2, control setup 40 of the present invention mainly comprises: a fixed mount 41 is installed on the bicycle rack 10; And Rocker arm 42, be installed on swingably this fixed mount 41 on, and the position of this Rocker arm 42 is close to the position of chain 12 tops of bicycle, its central authorities borrow a stud shaft 43 to be installed on the end of this fixed mount 41, and the one end has a contact arm 421, the end item of contact arm 421 has a contact gear 44, and this contact gear 44 is contacted with the upper limb of this chain 12; This Rocker arm 42 is with respect to an other end of this contact arm 421, it is a draft arm 422, the end of this draft arm 422 is connected with a setting device 47, this setting device 47 can be borrowed the elastic force of an elastic element 46, draw this Rocker arm 42, make this contact gear 44 keep certain pressure, be contacted with the upper limb of this chain 12, and can be, and move up and down along with the tension variation of chain 12; And lead-in wire 50, one end is connected on this Rocker arm 42, and an other end passes a conduit 51 and is connected on the aforesaid control circuit 30, makes the displacement action of this control setup 40 change and is delivered on this control circuit 30, and make the control signal of these control circuit 30 outputs change.

This control circuit 30 is borrowed this lead-in wire 50 to be subjected to Rocker arm 42 and is drawn the change in displacement that is produced, and changes the control signal of its output, so as to controlling the size of these power assist apparatus 20 outputting powers, can cooperate the change in displacement degree of Rocker arm 42 and changes.Yet, because the non-this case emphasis of the technology place of this control circuit 30, so its detailed technology contents will not be described in detail in detail at this.

As shown in Figure 2, comprise in this setting device 47: an adapter plate 471, it is provided with a nut 472; And a plus-minus screw 473, to lock among this nut 472, its head end has a rotating part 474, is available for users to rotate this plus-minus screw 473, makes this plus-minus screw 473 advance in this nut 472 or retreats; And aforesaid elastic element 48, the one end is connected in the end of aforementioned draft arm 422, and an other end is connected in the end of this plus-minus screw 473; And connecting portion 475, be arranged on the end of this plus-minus screw 473, can be connected, and make this elastic element 46 driven by this plus-minus screw 473 with this elastic element 46, and make its tension change, adjust this Rocker arm 42 and contact the pressure that gear 44 contacts with chain 12 so as to reaching.

As shown in Figure 3, for control setup of the present invention 40 zero load at bicycle, or the view under the low load condition.Control setup 40 of the present invention when mounted, this chain 12 is loosening slightly state, and the contact gear 44 of this control setup 40, contact with the upper limb of certain pressure with this chain 12, therefore, make the upper limb of this chain 12 be subjected to the pressure of this contact gear 44, and become slightly to recessed state.

As shown in Figure 4, when the living load of this bicycle rack 10 strengthens, the tension force that this chain 12 is born also can be along with increasing, therefore, when the tension force of this chain 12 during greater than the contact pressure of contact gear 44, just can drive this contact gear 44 and move up, therefore, make this Rocker arm 42 be subjected to the drive of this contact gear 44 and produce rocking motion.At this moment, lead-in wire 50 can be subjected to the traction of this Rocker arm 42, therefore, produces action and drive this control circuit 30.And when the living load of bicycle diminished, the pulling force that this chain 12 is born diminished, this moment should contact gear 44 and Rocker arm 42 be subjected to the elastic traction of this elastic element 46, again can be, and be returned to state shown in Figure 3 with chain 12 to pressing down.

Control setup 40 of the present invention, its main characteristics, for borrowing the displacement of this contact gear 44 with Rocker arm 42, and correctly detect the size of the living load of bicycle rack 10, and when living load states such as bicycle starting, climbing are big, the pulling force maximum that this chain 12 bears, therefore, contact gear 44 is also maximum with the degree of displacement of Rocker arm 42, makes control circuit 30 reach the state of the big power of output, so that bicycle rack 10 has enough starting power and climbing power; And when bicycle during in the light living load state of smooth ground run, chain 12 suffered pulling force reduce, contact gear 44 diminishes with the degree of displacement of Rocker arm 42, the signal that also can drive these control circuit 30 outputs simultaneously changes, and make the power of power assist apparatus 20 outputs diminish, to reach the purpose of saving in power.Therefore, make that control setup of the present invention can be so that the takeoff output size of power assist apparatus 20 cooperates nearly with the living load size variation state of bicycle, and effectively promote starting, the grade climbing performance of bicycle, and saving electric power, the effect that prolongs cruising radius.

Simultaneously, because the degree of displacement of the Rocker arm 42 of control setup 40, can be ratio ground along with the size of bicycle living load changes, therefore, make 30 of this control circuits to change the variation of the voltage height of control signal according to the variation ratio of the telescopic displacement amount of lead-in wire 50, just can control the size of the takeoff output of power assist apparatus 20, so, need just can accurately not control the output of auxiliary power via the computing of software, make the structure of this control circuit 30 to simplify.

And the action generation of this control setup 40 is borrowed the pulling force no-load voltage ratio of chain 12 fully and is controlled, and therefore can sense the strength that the rider steps on the pedal 13 of bicycle rack 10 very delicately.When the rider begins push down on the pedal 13 in an instant, contact gear 44 and just be subjected to the drive of chain 12 at once, and make the power of power assist apparatus 20 increase; And when the rider stopped to step on pedal 13, the pulling force that chain 12 is born disappeared, and then should just descend at once by contact gear 44, and made power assist apparatus 20 stop the output of power.Therefore, when making these bicycle rack 10 startings or acceleration, power assist apparatus 20 can be exported auxiliary power at once, and can effectively promote the starting and the grade climbing performance of bicycle rack 10; Simultaneously when bicycle rack 10 brakes, general rider will inevitably stop to step on pedal 13 at once, therefore, just can make the pulling force of chain 12 disappear, at this moment, this control setup 40 can be returned to reference position at once, and make power assist apparatus 20 stop outputting power, therefore, in the time of can avoiding braking, power assist apparatus 20 still continues the danger of outputting power.

In addition, control setup 40 another characteristics of the present invention, for it can borrow mechanical adjustment mode, and the blend proportion of change auxiliary power and bicycle living load, so that this power assist apparatus 20 can turn round under optimal state; And control setup 40 of the present invention can be adjusted voluntarily for the rider, therefore, can meet the various different demands of rider.

As shown in Figures 3 and 4, control setup 40 of the present invention can be temporarily transferred the plus-minus screw 473 of whole this setting device 47, changes the pulling force of elastic element 46, reaches the ratiometric purpose that changes power assist apparatus 20 outputting powers.When the user screws this plus-minus screw 473, when increasing the pulling force of this elastic element 46, can increase the contact pressure of this contact gear 44 and chain 12, therefore, the displacement amplitude that the pulling force that makes this Rocker arm 42 be subjected to chain 12 drives diminishes, and the power that makes power assist apparatus 20 outputs diminishes with respect to the ratio of the living load of bicycle; Otherwise, if the user loosens plus-minus screw 473, can be so that the displacement amplitude of Rocker arm 42 becomes big, and make power assist apparatus 20 export the auxiliary power of higher proportion, so, muscle power rider preferably can be selected the elastic force of elastic element 46 is increased, and reaching saving in power, or promotes the purpose of movement effects; And the more weak user of muscle power can reduce the pulling force of elastic element 46, makes to obtain auxiliary power largely.

In addition, as shown in Figure 3, the conduit 51 of aforesaid lead-in wire 50 is provided with one near terminal position and adjusts nut 52, can adjust the telescopic level of lead-in wire 50, the variation of 50 telescopic location can cooperate the change in location of Rocker arm 42 so that go between, and makes that the action of this control circuit 30 is accurate.

In addition, as shown in Figure 5, the draft arm 422 of Rocker arm 42 of the present invention is provided with a connecting strap 423, and the length direction along this draft arm 422 on this connecting strap 423 is provided with several draw-in grooves 424.These some draw-in grooves 424 can be sticked in wherein for the fastened component 53 of these 50 ends that go between, therefore, the user can select this fastened component 53 is sticked in the different draw-in groove 424, and makes this lead-in wire 50 and the distance of these draft arm 422 bonded assembly positions apart from the pivot center of this Rocker arm 42 change.Therefore, when lead-in wire 50 was sticked in draw-in groove 424 than the outside, then this lead-in wire 50 degree of displacement of produced by Rocker arm 42 drives can be bigger; Otherwise when lead-in wire 50 was sticked in the inboard draw-in groove 424, it is just less that it is subjected to Rocker arm 42 to drive the displacement stroke that is produced.

Control setup 40 of the present invention is borrowed above-mentioned setting device 47, is adjusted nut 52, and each draw-in groove 424, can adjust the matching relationship of this control setup 40, lead-in wire 50 and control circuit 30, to reach the correct purpose of action, but also can be for the demand of user according to oneself, the takeoff output of this power assist apparatus 20 adjusts different controller characteristic curves, so that can meet user's demand.

Claims (7)

1, a kind of control setup of engine-assisted bicycle, comprise bicycle rack, power assist apparatus on chain and the bicycle rack and a control circuit, it is characterized in that: also on bicycle rack, be provided with a control setup, this control setup comprises a fixed mount, a rocking arm, a contact gear, a lead-in wire and an elastic element, and wherein, rocking arm is articulated on the fixed mount, the contact gear is arranged at the rocking arm end, and is contacted with the epimere part of this cycle chain; The end that goes between is connected on this rocking arm, and the other end is connected with control circuit, and an elastic element one end is connected on the rocking arm other end Connection Bracket.

2, the control setup of engine-assisted bicycle as claimed in claim 1 is characterized in that: described fixed mount is a support body that can be fixed on the cycle frame.

3, the control setup of engine-assisted bicycle as claimed in claim 1, it is characterized in that: described fixed mount is provided with setting device, it comprises an adapter plate and a plus-minus screw, and this plus-minus screw is locked on this adapter plate, and its end is connected with this elastic element.

4, the control setup of engine-assisted bicycle as claimed in claim 1, it is characterized in that: the contact arm of the hypomere that described rocking arm comprises, the draft arm of epimere and a stud shaft, the terminal contact gear that connects of this contact arm, this draft arm is terminal to be connected with elastic element, and be connected with this lead-in wire, this stud shaft is arranged at the position that this contact arm is connected with this draft arm, and is fixed on the aforementioned fixation frame.

5, the control setup of engine-assisted bicycle as claimed in claim 4 is characterized in that: described draft arm is provided with a connecting piece, and the length direction of this draft arm of upper edge of this connecting strap is provided with most draw-in grooves.

6, the control setup of engine-assisted bicycle as claimed in claim 1 is characterized in that: described lead-in wire is sheathed in the conduit, and this catheter tip is provided with a plus-minus screw.

7, the control setup of engine-assisted bicycle as claimed in claim 1 is characterized in that: described contact gear and chain engages.