CN2259160Y - Electric wheel-chair cart - Google Patents
Electric wheel-chair cart Download PDFInfo
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- CN2259160Y CN2259160Y CN95245267U CN95245267U CN2259160Y CN 2259160 Y CN2259160 Y CN 2259160Y CN 95245267 U CN95245267 U CN 95245267U CN 95245267 U CN95245267 U CN 95245267U CN 2259160 Y CN2259160 Y CN 2259160Y
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Abstract
The utility model belongs to the electric vehicle, comprising a mechanical part and a control part, and composed of a sitting chair, a regulating wheel, a driving wheel, a controller, a handle bar and a regulating joint of the handle bar. The utility model is characterized in that the upper joint of the regulating joint of the handle bar is connected with a plug pin, and the lower end of the plug pin is provided with a tooth; the rim of the disc on the upper end of the lower joint is provided with a tooth slot, and the upper joint is connected with the lower joint by a bolt. The controller adopts the stepless speed change of the integrated circuit, and is provided with under-voltage short circuit protection, speed control, forward and backward control, and a PWM power output overload protecting circuit. The utility model can regulate the angle of the handle bar, the sitting chair can rise and fall, the armrest can be opened, the height and the width can be regulated, the operation is easy, and the use is convenient.
Description
This utility model relates to a kind of electric vehicle, particularly a kind of electric wheel-chair vehicle.
The old,weak,sick and disabled people's walking-replacing tool has various electric motor car at present, but volume is big, operates inconvenience and the also inconvenience of getting on or off the bus, and can't satisfy the old,weak,sick and disabled people's actual needs.
The purpose of this utility model provides a kind of control system and adopts integrated circuit control, easy and simple to handle, safe and reliable, the handlebar angle be can regulate and vehicle seat and handlebar distance changed, the seat liftable, and can do 360 ° of rotations, handrail can be opened and regulate its height, width, satisfies the electric wheel-chair vehicle of different build human needs.
The purpose of this utility model is achieved in that electric wheel-chair vehicle, comprises mechanical part, controller part.The seat back is equipped with backrest and is connected by screw, and armrest support is equipped with in its both sides, and armrest support is connected by screw with handrail.Be welded with seat support below the seat, be welded with rotating shaft in the middle of it, on the external diameter of rotating shaft, be pressed with plastic sleeve.The both sides of seat support are welded with square tube, and armrest support is inserted in the square tube, are locked by handwheel.Be welded with standpipe on the chassis, be with the toothed disc sleeve in the standpipe, be connected and fixed by bolt, the rotating shaft below the seat is inserted in the toothed disc sleeve.Be covered with back cover on the standpipe, on the toothed disc sleeve, damping spring be housed.Adorn a steering wheel at the front end of pedal, handlebar is housed in the above, handlebar adjustment joint is equipped with in the lower end of handlebar, and controller is equipped with in its upper end, and control crank is housed.In wheel Wheel-chair rear end two driving wheels are housed, drive part comprises direct current generator, decelerator, differential mechanism, and controller is housed, be characterized in: have groove in the middle of the top connection lower end of handlebar adjustment joint, groove is equipped with latch in the intermediary hole, the latch lower end is provided with a tooth, in its upper end hole spring is housed, in its lateral aperture handle is housed, employing is threaded, the upper end disk border of lower contact is provided with teeth groove, and top connection is connected by bolt with lower contact.Be inserted with the transposition bar in the telescopic teeth groove of toothed disc, the upper and lower side of channel-section steel is connected by bolt, and the bolt external diameter is with axle sleeve, and the transposition bar inserts in the channel-section steel and welds with axle sleeve, the side of channel-section steel is welded on the seat support, is provided with extension spring between the upper end of channel-section steel and transposition bar.Controller is by comparator N
4-1, Zener diode V
7, diode V
33, main relay K
3, resistance R
85Constitute under-voltage short-circuit protection circuit; Direction velocity pick-up potentiometer R
3, follower N
6-1, linear detection circuit N
6-2, N
6-3, phase inverter N
6-4, diode
V6, V
18Constitute speed control circuit; Comparator N
5-1, N
5-2, fet V
40Be clutch control circuit and comparator N
5-3, N
5-4, audion V
34, V
35, relay K
1, K
2Constitute the forward-reverse control circuit; Pulse width modulator U
1Waveshaping circuit and comparator N
7-1, audion V
27, V
28, fet V
29, V
30, V
31Constitute power output circuit; Comparator N
4-2, diode V
6Brownout holding circuit and comparator N
7-3, N
7-4, diode V
18Constitute overload protecting circuit.
This utility model can be regulated the handlebar angle and change vehicle seat and handlebar distance, the seat liftable, and handrail can be opened; regulate its height, width, can satisfy different build human needs, controller adopts the pulse wide modulation mode to realize stepless speed regulation; power output stage uses the fet parallel connection of big electric current, low on-resistance; output current is big, and is low in energy consumption, and controller has braking circuit and under-voltage; overload; anti-storage battery reversal connection kinds of protect function, simple to operate, easy to use.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is this utility model schematic appearance;
Fig. 2 is that toothed disc sleeve of the present utility model is connected cutaway view with standpipe;
Fig. 3 is that the A-A of this utility model Fig. 2 is to analysing and observe rotation diagram;
Fig. 4 is the structural representation that this utility model handlebar is adjusted joint;
Fig. 5 is the side view of this utility model Fig. 4;
Fig. 6 is this utility model circuit block diagram;
Fig. 7 is this utility model circuit theory diagrams.
In Fig. 1,2,3,4,5: backrest 1 is equipped with in seat 5 back, connect by screw 22, with screw 22 is that rotating shaft can be folding with seat 5, armrest support 7 is equipped with in its both sides, armrest support 7 is connected by screw 3 with handrail 2, can rotate around screw 3, realizes opening and falling of handrail 2, adjustment screw 4 can change the height after handrail 2 falls, and realizes the altitude mixture control of handrail 2.Be welded with seat support 28 below the seat 5, be welded with rotating shaft 24 in the middle of it, be pressed with plastic sleeve 33 on the external diameter of rotating shaft 24, the both sides of seat support 28 are welded with square tube 6, and armrest support 7 is inserted in the square tube 6, can stretch, by handwheel 23 lockings, realize the adjusting of handrail 2 width.Be welded with standpipe 25 on the chassis 11, be with toothed disc sleeve 27 in the standpipe 25, have three holes on the toothed disc sleeve pipe 27, be connected and fixed by bolt 26 as required, rotating shaft 24 below the seat 5 is inserted in the toothed disc sleeve 27, be inserted with transposition bar 29 in the teeth groove of toothed disc sleeve 27, the upper and lower side of channel-section steel 32 is connected by bolt 31, bolt 31 external diameters are with axle sleeve, transposition bar 29 inserts in the channel-section steels 32 and the axle sleeve welding, and the side of channel-section steel 32 is welded on the seat support 28, is provided with extension spring 30 between the bar 29 in the upper end of channel-section steel 32 with replacing, transposition bar 29 adopts leverage, its fulcrum is a screw 31, and transposition bar 29 1 ends are handle, and the other end relies on extension spring 30 can drop in the tooth of toothed disc sleeve 27 automatically, when pressing transposition bar 29, one end of transposition bar 29 and the tooth of toothed disc sleeve 27 are thrown off, and seat 5 at toothed disc sleeve 27 internal rotation, realizes that seat 5 rotates in the horizontal direction together with seat support 28, when transposition bar 29 1 ends drop in arbitrary teeth groove, seat 5 is locked in a certain position.Be covered with back cover 13 on the standpipe 25, damping spring 12 is housed on toothed disc sleeve 27, adorn a steering wheel 15 at the front end of pedal, handlebar 17 is housed in the above, handlebar adjustment joint 16 is equipped with in the lower end of handlebar 17, and controller 18 is equipped with in its upper end, and control crank 21 is housed; In wheel Wheel-chair rear end two driving wheels 10 are housed, drive part 8 comprises direct current generator, decelerator, differential mechanism, and controller 9 is housed.Handlebar is adjusted the middle groove that has in top connection 34 lower ends of joint 16, groove is equipped with latch 36 in the intermediary hole, latch 36 lower ends are provided with a tooth, spring 35 is housed in its upper end hole, handle 38 is housed in its lateral aperture, and employing is threaded, and the upper end disk border of lower contact 37 is provided with teeth groove 39, top connection 34 and lower contact 37 are connected by bolt, and nut 40 is tightened.When upwards spurring handle 38 with hands, latch 36 is deviate from from the teeth groove 39 of lower contact 37, upper and lower joint 34,37 is that rotating shaft relatively rotates with the bolt, latch 36 inserts in the teeth groove 39 of lower contact 37 under the effect of spring 35 at ordinary times, make upper and lower joint 34,37 in a certain fixed-site, realized the adjustment of handlebar 17 angles.Controller 9,18 adopts the pulse wide modulation mode to realize stepless time adjustment; its effect is that functions such as electric alarm are indicated, owed to over current of motor protection, voltage; speed knob 20 on the controller 18 is regulated speed of a motor vehicle speed; control crank 21 manipulation electric wheel-chair vehicles advance or retreat, three normal, under-voltage, urgent need chargings of green, yellow, the red expression voltage of LED light emitting diode.
In Fig. 6,7: controller 9, controller 18 are by comparator N
4-1, Zener diode V
7, diode V
33, main relay K
3, resistance R
85Constitute under-voltage short-circuit protection circuit 1, the 24V power supply is through the overcurrent switch S
1, S
2, electric fuse F
1, diode V
32, be comparator N
4, audion V
36And main relay K
3Resistance R is passed through in power supply
30, at Zener diode V
7Last generation reference voltage is again by diode V
33, resistance R
85Be the remaining circuit power supply; Circuit just often is added to comparator N
4-1The negative relatively voltage of end is if be higher than just relatively terminal voltage, comparator N
4-1Output low level, audion V
36Conducting, main relay coil electricity contact K
3Adhesive is directly powered to the A point by electric current; When short circuit exists, resistance R
85Pressure drop strengthens, and A point current potential reduces, comparator N
4-1Negative relatively terminal voltage is lower than just relatively terminal voltage, comparator N
4-1The output high level, audion V
36Not conducting, main relay coil no current, not adhesive of contact, the A point voltage is very low, and controller can not normally move, resistance R
85The restriction maximum short circuit current is about 500mA; In case the storage battery reversal connection, diode V
32, V
33Unilateral conduction, the holding circuit power supply is not damaged, and constitutes anti-storage battery reversal connection circuit.Direction velocity pick-up potentiometer R in the controller 9,18
3, follower N
6-1, linear detection circuit N
6-2, N
6-3, phase inverter N
6-4, diode V
6, V
18Constitute speed control circuit 2; Operating grip 21 closure velocity pick-up potentiometer R
3, when operating grip 21 in the centre position, its moving point is output 2.5V voltage when resistance value 1/2 position, electric wheel-chair vehicle is in dead ship condition, and clutch discharges, when operating grip 21 turns right, its moving point is when high potential slides, electric wheel-chair vehicle advances, and the high more speed of a motor vehicle of current potential is fast more, when operating grip 21 turns left, its moving point slides to the electronegative potential direction, electric wheel-chair vehicle retreats, and current potential is low more, and the speed of a motor vehicle is fast more; Speed governing knob 20 control potentiometer R
2, to speed of a motor vehicle fine tuning; Direction velocity pick-up potentiometer R
3The direction rate signal of output is through follower N
6-1Positive and negative to detecting circuit N
6-2, N
6-3The output speed absolute value signal is again through phase inverter N
6-4After the paraphase, be defeated by pulse-width modulation circuit and realize speed controlling, potentiometer R
3Rate signal through diode V
10, capacitor C
9And astern speed detecting circuit N
6-2Negative input end resistance form peaker, produce the astern speed variable signal at its negative input end, the acceleration when reducing to retreat is through diode V
6, V
18The pulse signal of the amplitude 5V of input makes capacitor C
11Discharge, phase inverter N
6-4The positive input terminal current potential raises, and this operational amplifier is put output voltage and raise, and makes the speed of a motor vehicle slack-off, and the pulse signal of input is wide more, and the speed of a motor vehicle is slow more.Comparator N in the controller 9,18
5-1, N
5-2, N
4-4And fet V
40Be clutch control circuit and comparator N
5-3, N
5-4, audion V
34, V
35, relay K
1, K
2, constitute forward-reverse control circuit 3; Comparator N
5-1, N
5-2And comparator N
5-3, N
5-4Be two double-limit comparators, as potentiometer R
3During output 2.5V voltage, comparator N
5-1, N
5-2The output high level, comparator N
4-4Output low level, fet V
40Turn-off clutch coil L
1No current, clutch discharges, comparator N
5-3, N
5-4Output is low level, audion V
34, V
35Not conducting, relay K
1, K
2Be in normally off, the motor short circuit in winding; As potentiometer R
3Output is when being higher than the slip of 2.5V voltage direction, and rate signal is higher than comparator N
5-1During threshold value, comparator N
5-1Output is by high step-down, fet V
40Conducting, clutch coil L
1Power supply, clutch is opened, simultaneously comparator N
5-3Output becomes high level, audion V
34Conducting, relay K
1Coil power supply adhesive, motor winding seal in the power output tube circuit, and when the power tube conducting, electric wheel-chair vehicle begins to travel forward, otherwise as potentiometer R
3Signal is lower than comparator N to being lower than the variation of 2.5V voltage direction
5-2Threshold voltage the time, comparator N
5-2Output is by high step-down, comparator N
4-4Uprise fet V by low
40Conducting, clutch is opened, simultaneously comparator N
5-4Become high level, audion V to export mutually
35Conducting, relay K
2Adhesive, motor winding seal in the power output tube circuit in the other direction; In both cases, as potentiometer R
3When output becomes 2.5V voltage again, comparator N
5-3, N
5-4Output becomes low level, audion V
34, V
35Turn-off relay K
1, K
2Discharge motor short circuit in winding, comparator N
5-1, N
5-2Output becomes high level, and capacitor C
7Fill the 5V voltage of depositing and pass through resistance R
41, R
42Discharge makes comparator N
4-4Negative relatively terminal potential reduces, and delays comparator N during through one section
4-4The output voltage step-down, clutch discharges, so the stall of motor elder generation, clutch discharges again then.Pulse width modulator U in the controller 9,18
1Pwm signal form circuit and comparator N
7-1, audion V
27, V
28, fet V
29, V
30, V
31Constitute power output circuit 4; Pulse-width modulation circuit frequency of oscillation 15KHZ, its 5V power supply is as controller reference power supply, pulse width modulator U
1The single-ended output of interior emitter stage, dutycycle can be regulated resistance R in 8% to 100% scope
62, Zener diode V
14For the output transistor colelctor electrode provides power supply, the pulse-width signal of pin 9,10 outputs is through resistance R
66, capacitor C
17Be added to comparator N
7-1, N
7-2Input, comparator N
7-1Control audion V
27, V
28, fet V
29, V
30, V
31, power output circuit, comparator N
7-2Control audion V
20, fet V
23, V
24, V
25Suppress negative peak and braking circuit, fet V
29, V
30, V
31During conducting, fet V
23, V
24, V
25Conducting; Fet V
23, V
24, V
25Turn-off fet V
29, V
30, V
31Turn-off; When pulse-width signal during by low uprising, capacitor C
17On voltage progressively raise comparator N
7-1Export at first by high step-down audion V
27Turn-off audion V
28Conducting, fet V
29, V
30, V
31Turn-off, after this comparator N
7-2Export also by high step-down fet V
23, V
24, V
25Conducting, fet V on the one hand
23, V
24, V
25Inverse peak voltage when interior parasitic diode suppresses the power circuit shutoff, when motor rotates, the fet V of conducting
23, V
24, V
25Make the motor short circuit in winding, realize braking; When pulse-width signal during by high step-down, comparator N
7-2Output is at first uprised by low, turn-offs fet V
23, V
24, V
25Afterwards, comparator N
7-1Output uprises audion V by low
27Conducting, audion V
28Turn-off fet V
29, V
30, V
31Gate pole become high level and conducting, the motor winding powers up; Time slot between two groups of fet states are changed is by resistance R
66, capacitor C
16And the different threshold voltage decisions of two comparators; Fet V
23, V
24, V
25Gate pole control voltage produce by bootstrap circuit boost, as comparator N
7-2Output is during by low uprising, audion V
20Conducting, fet V at this moment
29, V
30, V
31All turn-off; Zener diode V
22When cathode potential is 24V voltage, by Zener diode V
22, resistance R
78, audion V
20Form electric current, Zener diode V
22Forward voltage drop be fet V
23, V
24, V
25Door source interpolar voltage, thereby make fet V
23, V
24, V
25Turn-off fet V
29, V
30, V
31Conducting, Zener diode V
22The anode potential vanishing, resistance R
78Middle no current, fet V
23, V
24, V
25Door voltage between source electrodes vanishing, keep off state, capacitor C
18By diode V
21, Zener diode V
22, charge to about 24V voltage, as comparator N
7-2Output is during by high step-down, audion V
20At first turn-off, then fet V
29, V
30, V
31Also turn-off Zener diode V
22Cathode voltage become 24V voltage, capacitor C
18Through resistance R
77, R
78With Zener diode V
22Discharge is at Zener diode V
22Last generation burning voltage makes fet V
23, V
24, V
25Conducting; Diode V
21Cathode potential is a capacitor C
18On voltage and supply voltage sum, be higher than anode potential and not conducting.Comparator N in the controller 9,18
4-2, diode V
6Brownout holding circuit and comparator N
7-3, N
7-4, diode V
18Constitute overload protecting circuit 5; Comparator N
7-3Be output fet V
29, V
30, V
31Turn-off, identification circuit, and be overload comparator N
7-4Gating signal is provided, when pulse-width signal is high level, fet V
29, V
30, V
31Turn-off resistance R
63, capacitor C
16Be high level, comparator N
7-3The negative terminal current potential is higher than anode, is output as low level zero volt, although comparator N
7-3Load resistance R
65Power supply meet fet V
29, V
30, V
31Bushing is a 24V voltage, but by this comparator N
7-3Shielding, a fet V fails
29, V
30, V
31Drain potential is introduced comparator N
7-4Input, and then make comparator N
7-4Output potential be zero; When pulse width signal is low level, fet V
29, V
30, V
31Conducting, comparator N
7-3Be output as high level, fet V
29, V
30, V
31Drain voltage during conducting is through resistance R
65Be added to comparator N
7-4Just relatively the end, when voltage is higher than negative terminal voltage, comparator N
7-4Output 5V voltage is by diode V
18Be added to the speed circuit, output pulse width is reduced, fet V
29, V
30, V
31The conducting electric current reduces, until making comparator N
7-4Output becomes low level; Comparator N
7-4Negative terminal voltage can be by resistance R
73Adjust and set; When supply voltage is crossed when low comparator N
4-2Negative terminal voltage when being lower than positive terminal voltage, comparator N
4-2Output high level 5V voltage is by diode V
6Be added to the speed circuit, reduce pulsewidth, reduce the speed of a motor vehicle, until car is stopped.
Claims (7)
1. an electric wheel-chair vehicle comprises mechanical part, the controller part; Seat (5) back is equipped with backrest (1) and is connected by screw (22), and armrest support (7) is equipped with in its both sides, and armrest support (7) is connected by screw (3) with handrail (2); Be welded with seat support (28) below the seat (5), be welded with rotating shaft (24) in the middle of it, be pressed with plastic sleeve (33) on the external diameter of rotating shaft (24); The both sides of seat support (28) are welded with square tube (6), and armrest support (7) is inserted in the square tube (6), are locked by handwheel (23); Be welded with standpipe (25) on the chassis (11); Be with toothed disc sleeve (27) in the standpipe (25), be connected and fixed by bolt (26), the rotating shaft (24) below the seat is inserted in the toothed disc sleeve (27); Be covered with back cover (13) on the standpipe (25), damping spring (12) is housed on toothed disc sleeve (27); Adorn a steering wheel (15) at the front end of pedal (14), handlebar (17) is housed in the above, handlebar adjustment joint (16) is equipped with in the lower end of handlebar (17), and controller (18) is equipped with in its upper end, and control crank (21) is housed; In wheel Wheel-chair rear end two driving wheels (10) are housed, drive part (8) comprises direct current generator, decelerator, differential mechanism, and controller (9) is housed, it is characterized in that: have groove in the middle of top connection (34) lower end of handlebar adjustment joint (16), latch (36) is housed in the intermediary hole of groove, latch (36) lower end is provided with a tooth, spring (35) is housed in the upper end hole, handle (38) is housed in its lateral aperture, employing is threaded; The upper end disk border of lower contact (37) is provided with teeth groove (39), and top connection (34) is connected by bolt (41) with lower contact (37).
2. electric wheel-chair vehicle according to claim 1, it is characterized in that: be inserted with transposition bar (29) in the teeth groove of toothed disc sleeve (27), the upper and lower side of channel-section steel (32) is connected by bolt (31), bolt (31) external diameter is with axle sleeve, transposition bar (29) inserts in the channel-section steel (32), with axle sleeve welding, the side of channel-section steel (32) is welded on the seat support (28), draws spring (30) in the upper end of channel-section steel (32) with replacing to be provided with to stretch between the bar (29).
3. electric wheel-chair vehicle according to claim 1 is characterized in that: controller (9), controller (18) are by comparator N
4-1, Zener diode V
7, diode V
33, main relay K
3, resistance R
85Constitute under-voltage short-circuit protection circuit 1, the 24V power supply is through the overcurrent switch S
1, S
2, electric fuse F
1, diode V
32, be comparator N
4, audion V
36And main relay K
3Resistance R is passed through in power supply
30, at Zener diode V
7Last generation reference voltage is again by diode V
33, resistance R
85Be the remaining circuit power supply; Circuit just often is added to comparator N
4-1The negative relatively voltage of end is if be higher than just relatively terminal voltage, comparator N
4-1Output low level, audion V
36Conducting, main relay coil electricity contact K
3Adhesive is directly powered to the A point by electric current; When short circuit exists, resistance R
85Pressure drop strengthens, and A point current potential reduces, comparator N
4-1Negative relatively terminal voltage is lower than just relatively terminal voltage, comparator N
4-1The output high level, audion V
36Not conducting, main relay coil no current, not adhesive of contact, the A point voltage is very low, and controller can not normally move, resistance R
85The restriction maximum short circuit current is about 500mA; In case the storage battery reversal connection, diode V
32, V
33Unilateral conduction, the holding circuit power supply is not damaged, and constitutes anti-storage battery reversal connection circuit.
4. electric wheel-chair vehicle according to claim 1 is characterized in that: the direction velocity pick-up potentiometer R in controller (9), (18)
3, follower N
6-1, linear detection circuit N
6-2, N
6-3, phase inverter N
6-4, diode V
6, V
18Constitute speed control circuit 2; Control crank (21) closure velocity pick-up potentiometer R
3, when control crank (21) in the centre position, its moving point is output 2.5V voltage when resistance value 1/2 position, electric wheel-chair vehicle is in dead ship condition, and clutch discharges, when control crank (21) turns right, its moving point is when high potential slides, electric wheel-chair vehicle advances, and the high more speed of a motor vehicle of current potential is fast more, when control crank (21) turns left, its moving point slides to the electronegative potential direction, electric wheel-chair vehicle retreats, and current potential is low more, and the speed of a motor vehicle is fast more; Speed governing knob (20) control potentiometer R
2, to speed of a motor vehicle fine tuning; Direction velocity pick-up potentiometer R
3The direction rate signal of output is through follower N
6-1, positive and negative to detecting circuit N
6-2, N
6-3The output speed absolute value signal is again through phase inverter N
6-4After the paraphase, be defeated by pulse-width modulation circuit and realize speed controlling, potentiometer R
3Rate signal through diode V
10, capacitor C
9And astern speed detecting circuit N
6-2Negative input end resistance form peaker, produce the astern speed variable signal at its negative input end, the acceleration when reducing to retreat is through diode V
6, V
18The pulse signal of the amplitude 5V of input makes capacitor C
11Discharge, phase inverter N
6-4The positive input terminal current potential raises, this operational amplifier N
6Output voltage raises, and makes the speed of a motor vehicle slack-off, and the pulse signal of input is wide more, and the speed of a motor vehicle is slow more.
5. electric wheel-chair vehicle according to claim 1 is characterized in that, the comparator N in controller (9), (18)
5-1, N
5-2, N
4-4And fet V
40Be clutch control circuit and comparator N
5-3, N
5-4, audion V
34, V
35, relay K
1, K
2, constitute forward-reverse control circuit 3; Comparator N
5-1, N
5-2And comparator N
5-3, N
5-4Be two double-limit comparators, as potentiometer R
3During output 2.5V voltage, comparator N
5-1, N
5-2The output high level, comparator N
4-4Output low level, fet V
40Turn-off clutch coil L
1No current, clutch discharges, comparator N
5-3, N
5-4Output is low level, audion V
34, V
35Not conducting, relay K
1, K
2Be in normally off, the motor short circuit in winding; As potentiometer R
3Output rate signal when being higher than the slip of 2.5V voltage direction is higher than comparator N
5-1During threshold value, comparator N
5-1Output is by high step-down, fet V
40Conducting, clutch coil L
1Power supply, clutch is opened, simultaneously comparator N
5-3Output becomes high level, audion V
34Conducting, relay K
1Coil power supply adhesive, motor winding seal in the power output tube circuit, and when the power tube conducting, electric wheel-chair vehicle begins to travel forward, otherwise as potentiometer R
3Signal changes to being lower than the 2.5V voltage direction, is lower than comparator N
5-2Threshold voltage the time, comparator N
5-2Output is by high step-down, comparator N
4-4Uprise fet V by low
40Conducting, clutch is opened, simultaneously comparator N
5-4Output becomes high level, audion V
35Conducting, relay K
2Adhesive, motor winding seal in the power output tube circuit in the opposite direction; In both cases, as potentiometer R
3When output becomes 2.5V voltage again, comparator N
5-3, N
5-4Output becomes low level, audion V
34, V
35Turn-off relay K
1, K
2Discharge motor short circuit in winding, comparator N
5-1, N
5-2Output becomes high level, and capacitor C
7Fill the 5V voltage of depositing and pass through resistance R
41, R
42Discharge makes comparator N
4-4Negative relatively terminal potential reduces, and delays comparator N during through one section
4-4The output voltage step-down, clutch discharges, so the stall of motor elder generation, clutch discharges again then.
6. electric wheel-chair vehicle according to claim 1 is characterized in that: pulse width modulator U in controller (9), (18)
1Pwm signal form circuit and comparator N
7-1, audion V
27, V
28, fet V
29, V
30, V
31Constitute power output circuit 4; Pulse-width modulation circuit frequency of oscillation 15KHZ, its 5V power supply is as controller reference power supply, pulse width modulator U
1The single-ended output of interior emitter stage, dutycycle can be regulated resistance R in 8% to 100% scope
62, Zener diode V
14For the output transistor colelctor electrode provides power supply, the pulse-width signal of pin 9,10 outputs is through resistance R
66, capacitor C
17Be added to comparator N
7-1, N
7-2Input, comparator N
7-1Control audion V
27, V
28, fet V
29, V
30, V
31Power output circuit, comparator N
7-2Control audion V
20, fet V
23, V
24, V
25Suppress negative peak and braking circuit, fet V
29, V
30, V
31During conducting, fet V
23, V
24, V
25Turn-off; Fet V
23, V
24, V
25Conducting, fet V
29, V
30, V
31Turn-off; When pulse-width signal during by low uprising, capacitor C
17On voltage progressively raise comparator N
7-1Export at first by high step-down audion V
27Turn-off audion V
28Conducting, fet V
29, V
30, V
31Turn-off, after this comparator N
7-2Export also by high step-down fet V
23, V
24, V
25Conducting, fet V on the one hand
23, V
24, V
25Inverse peak voltage when interior parasitic diode suppresses the power circuit shutoff, when motor rotates, the fet V of conducting
23, V
24, V
25Make the motor short circuit in winding, realize braking; On the other hand when pulse-width signal during by high step-down, comparator N
7-2Output is at first uprised by low, turn-offs fet V
23, V
24, V
25Afterwards, comparator N
7-1Output uprises audion V by low
27Conducting, audion V
28Turn-off fet V
29, V
30, V
31Gate pole become high level and conducting, the motor winding powers up; Time slot between two groups of fet states are changed is by resistance R
66, capacitor C
16And the different threshold voltage decisions of two comparators; Fet V
23, V
24, V
25Gate pole control voltage produce by bootstrap circuit boost, as comparator N
7-2Output is during by low uprising, audion V
20Conducting, fet V at this moment
29, V
30, V
31All turn-off; Zener diode V
22When anode potential is 24V voltage, by Zener diode V
22, resistance R
78, audion V
20Form electric current, Zener diode V
22Forward voltage drop be fet V
23, V
24, V
25Door source interpolar voltage, thereby make fet V
23, V
24, V
25Turn-off fet V
29, V
30, V
31Conducting, Zener diode V
22The anode potential vanishing, resistance R
78Middle no current, fet V
23, V
24, V
25Door voltage between source electrodes vanishing, keep off state, capacitor C
18By diode V
21, Zener diode V
22, charge to about 24V voltage, as comparator N
7-2Output is during by high step-down, audion V
20At first turn-off, then fet V
29, V
30, V
31Also turn-off Zener diode V
22Anode voltage become 24V voltage, capacitor C
18Through resistance R
77, R
78With Zener diode V
22Discharge is at Zener diode V
22Last generation burning voltage makes fet V
23, V
24, V
25Conducting; Diode V
21Cathode potential is a capacitor C
18On voltage and supply voltage sum, be higher than anode potential and not conducting.
7. electric wheel-chair vehicle according to claim 1 is characterized in that: the comparator N in controller (9), (18)
4-2, diode V
6Brownout holding circuit and comparator N
7-3, N
7-4, diode V
18Constitute overload protecting circuit 5; Comparator N
7-3Be output fet V
29, V
30, V
31Turn-off, identification circuit, and be overload comparator N
7-4Gating signal is provided, when pulse-width signal is high level, fet V
29, V
30, V
31Turn-off resistance R
63, capacitor C
16Be high level, comparator N
7-3The negative terminal current potential is higher than anode, is output as low level zero volt, although comparator N
7-3Load resistance R
65Power supply meet fet V
29, V
30, V
31Bushing is a 24V voltage, but by this comparator N
7-3Shielding, a fet V fails
29, V
30, V
31Drain potential is introduced comparator N
7-4Input, and then make comparator N
7-4Output potential be zero; When pulse width signal is low level, fet V
29, V
30, V
31Conducting, comparator N
7-3Be output as high level, fet V
29, V
30, V
31Drain voltage during conducting is through resistance R
65Be added to comparator N
7-4Just relatively the end, when voltage is higher than negative terminal voltage, comparator N
7-4Output 5V voltage is by diode V
18Be added to the speed circuit, output pulse width is reduced, fet V
29, V
30, V
31The conducting electric current reduces, until making comparator N
7-4Output becomes low level; Comparator N
7-4Negative terminal voltage can be by resistance R
73Adjust and set; When supply voltage is crossed when low comparator N
4-2Negative terminal voltage when being lower than positive terminal voltage, comparator N
4-2Output high level 5V voltage is by diode V
6Be added to the speed circuit, reduce pulsewidth, reduce the speed of a motor vehicle, until car is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95245267U CN2259160Y (en) | 1995-09-18 | 1995-09-18 | Electric wheel-chair cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95245267U CN2259160Y (en) | 1995-09-18 | 1995-09-18 | Electric wheel-chair cart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2259160Y true CN2259160Y (en) | 1997-08-13 |
Family
ID=33885453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95245267U Expired - Fee Related CN2259160Y (en) | 1995-09-18 | 1995-09-18 | Electric wheel-chair cart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2259160Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418806C (en) * | 2004-08-17 | 2008-09-17 | 光阳工业股份有限公司 | Driving character individualized device of electric vehicle |
| CN101544255A (en) * | 2009-05-04 | 2009-09-30 | 倪既民 | Seat hand-ring rotating steering type loaner car |
| CN101949441A (en) * | 2010-09-19 | 2011-01-19 | 张维国 | Star-axis difference adjusting differential mechanism |
| CN103110486A (en) * | 2013-03-06 | 2013-05-22 | 胡三清 | Wheel chair and method controlled by tooth |
| CN103720549A (en) * | 2013-12-20 | 2014-04-16 | 杭州银江智慧医疗集团有限公司 | Manual four-wheel multifunctional vehicle special for old persons |
| CN104323770A (en) * | 2014-11-20 | 2015-02-04 | 康泰医学系统（秦皇岛）股份有限公司 | Pedestal pan type quick physical examination device |
| CN104825287A (en) * | 2015-05-22 | 2015-08-12 | 浙江全球跑电动轮椅有限公司 | Seat of electric wheelchair |
| CN110682986A (en) * | 2019-10-18 | 2020-01-14 | 徐州美世通电动车有限公司 | Electric vehicle convenient for disabled to get on and off |
| CN114305895A (en) * | 2022-01-06 | 2022-04-12 | 恩比尔(厦门)机械制造有限公司 | Handlebar-adjustable wheelchair |
-
1995
- 1995-09-18 CN CN95245267U patent/CN2259160Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418806C (en) * | 2004-08-17 | 2008-09-17 | 光阳工业股份有限公司 | Driving character individualized device of electric vehicle |
| CN101544255A (en) * | 2009-05-04 | 2009-09-30 | 倪既民 | Seat hand-ring rotating steering type loaner car |
| CN101544255B (en) * | 2009-05-04 | 2014-06-11 | 倪既民 | Seat hand-ring rotating steering type loaner car |
| CN101949441A (en) * | 2010-09-19 | 2011-01-19 | 张维国 | Star-axis difference adjusting differential mechanism |
| CN101949441B (en) * | 2010-09-19 | 2013-01-02 | 张维国 | Star-axis difference adjusting differential mechanism |
| CN103110486A (en) * | 2013-03-06 | 2013-05-22 | 胡三清 | Wheel chair and method controlled by tooth |
| CN103720549A (en) * | 2013-12-20 | 2014-04-16 | 杭州银江智慧医疗集团有限公司 | Manual four-wheel multifunctional vehicle special for old persons |
| CN104323770A (en) * | 2014-11-20 | 2015-02-04 | 康泰医学系统（秦皇岛）股份有限公司 | Pedestal pan type quick physical examination device |
| CN104825287A (en) * | 2015-05-22 | 2015-08-12 | 浙江全球跑电动轮椅有限公司 | Seat of electric wheelchair |
| CN110682986A (en) * | 2019-10-18 | 2020-01-14 | 徐州美世通电动车有限公司 | Electric vehicle convenient for disabled to get on and off |
| CN114305895A (en) * | 2022-01-06 | 2022-04-12 | 恩比尔(厦门)机械制造有限公司 | Handlebar-adjustable wheelchair |
| CN114305895B (en) * | 2022-01-06 | 2024-05-28 | 恩比尔(厦门)机械制造有限公司 | Wheelchair with adjustable handlebar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |