CN208525259U - Foldable electric wheeled chair - Google Patents

Abstract

The utility model discloses a kind of foldable electric wheeled chairs, it includes bracket, adjustable backrest, hand pushing device, armrest system, reversible foot pedal device and power device, and bracket includes fore-stock, after-poppet, front wheel carrier, rear wheel frame and seat frame；Adjustable back-rest means for chair include respectively and after-poppet, seat frame rotation connection backrest and be arranged between backrest and after-poppet and the recliner for adjusting backrest；Hand pushing device include be rotatably connected on by back pushing hands and the fixation device between backrest and pushing hands and when pushing hands rotate in place for locking pushing hands relative to the turned position of backrest is set；Armrest system includes handrail mounted on the backrest, controller bay, is mounted on controller bay and the controller for controlling electric wheelchair, and controller bay includes connecting rod, and connecting rod is inserted into handrail.It facilitates the user of different demands to use, and easy to operate, convenient for folding, brings convenience to user.

Description

Foldable electric wheeled chair

Technical field

The utility model relates to a kind of foldable electric wheeled chairs, belong to wheelchair technical field.

Background technique

Although existing wheelchair can fold, tooling complex process operates pretty troublesome, not readily portable, uses When person uses, it is also difficult to adjust electric wheelchair according to different needs, influence the comfort level of user.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides a kind of folding electric wheel Chair, it is suitable for the user of different demands, and easy to operate, convenient for folding, brings convenience to user.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of foldable electric wheeled chair, it is wrapped It includes:

Bracket, the bracket include fore-stock, after-poppet, front wheel carrier, rear wheel frame and seat frame, the lower end of the front wheel carrier Front wheels are installed, the lower end of the rear wheel frame is equipped with rear wheels, the upper end of the front wheel carrier, the upper end of rear wheel frame, seat cushion Frame is hinged, and the one end of the fore-stock is rotatably connected on front wheel carrier, after the one end of the after-poppet is rotatably connected on On wheel carrier, the other end of the fore-stock and the other end of after-poppet are hinged；

Adjustable back-rest means for chair, the adjustable back-rest means for chair include leaning on respectively with what after-poppet, seat frame were rotatablely connected Carry on the back and be arranged in the recliner between backrest and after-poppet and for adjusting backrest；

Hand pushing device, the hand pushing device include be rotatably connected on pushing hands by back and at least one setting in backrest and For locking fixation device of the pushing hands relative to the turned position of backrest between pushing hands and when pushing hands rotate in place；

Armrest system, the armrest system include handrail mounted on the backrest, controller bay, are mounted on controller bay And the controller for controlling electric wheelchair, the controller bay includes connecting rod, and the connecting rod is axially movable and can week To being rotatably inserted into handrail；

Reversible foot pedal device, the reversible foot pedal device include at least one hinge bar and footrest frame, institute The one end for stating hinge bar is hinged on fore-stock, and the footrest frame is hinged on the other end of hinge bar, on the footrest frame It is provided with foot pedal；

For driving the power device of rear wheels, the power device is connect with controller by connection line.

Further for preventing to user causing danger because electric wheelchair is swung back, the bracket further includes auxiliary frame, The auxiliary frame includes:

Cross bar, one end of the cross bar are connected to the left side of rear wheel frame, and the other end of the cross bar is connected to rear wheel frame Right side；

Auxiliary wheel carrier, the auxiliary wheel carrier are connected on cross bar, and jockey pulley group is provided on the auxiliary wheel carrier；

One end of at least one connecting rod, the connecting rod is hinged on after-poppet, and the other end of the connecting rod is connected to jockey pulley On frame.

Further provide a kind of specific structure of recliner, the recliner include jack, Draw-off mechanism and the position retaining plate matched with jack, the jack are arranged on after-poppet, set on the position retaining plate It is equipped with shift slot, the position retaining plate is connected to by back, and the draw-off mechanism is connected with jack, will pass through movement drawing It is detached from shift slot on a part insertion position retaining plate of mechanism controls jack or from shift slot；Wherein,

The jack includes cylinder, deploying and retracting axis and folding and unfolding spring, and the cylinder is connected on after-poppet, the folding and unfolding Axis is axial movably through cylinder along cylinder, and the head of the deploying and retracting axis is connected with draw-off mechanism, sets on the deploying and retracting axis It is equipped with block, the folding and unfolding spring pocket is mounted in the outside of the deploying and retracting axis, one end of the folding and unfolding spring and folding and unfolding shaft head institute The end of cylinder abut against, the other end of the folding and unfolding spring and the block abut, will pass through by compression folding and unfolding bullet The rebound of spring drives the reset of deploying and retracting axis and the tail portion of deploying and retracting axis is made to be embedded in shift slot；

The draw-off mechanism includes traction fiber and connector, and the head of deploying and retracting axis, the traction is arranged in the connector Silk is connected with connector, is provided with protective case on the connecting portion of the traction fiber and connector；

At least two shift slots are provided on the position retaining plate, and shift slot setting is propped up in jack with backrest and afterwards On swinging track line centered on the rotation connection axis of frame.

Further for backrest is preferably adjusted, there are two the jack settings, one of jack setting In the left side of after-poppet, the right side of after-poppet, position retaining plate and the drawing being connected with jack is arranged in another jack There are two mechanism is also respectively set, the left side of backrest is arranged in one of position retaining plate, and backrest is arranged in another position retaining plate The traction fiber on right side, two draw-off mechanisms links together.

A kind of specific structure of fixed device is further provided, the fixed device includes:

Back is being leaned in fixed body, the fixed body setting；

Fixing axle, the fixing axle are movably disposed in fixed body；

Fixation hole in pushing hands is set；

Fixing axle driving mechanism, the fixing axle driving mechanism are mounted on fixed body, and the fixing axle driving mechanism For driving fixing axle to move in fixed body, when pushing hands rotate in place relative to backrest, the fixing axle driving machine is acted Structure protrudes at least part of the fixing axle in the fixation hole；

Reset spring is provided with block piece in the fixing axle, and the reset spring is sleeved in fixing axle, the reset bullet One end of spring is abutted with block piece, and the other end and the fixed body of the reset spring abut against, will pass through by compressed reset The rebound of spring drives fixing axle to be detached from fixation hole.

A kind of specific structure of fixing axle driving mechanism is further provided, the fixing axle driving mechanism includes eccentric convex Wheel body, the eccentric cam body are hinged on fixed body in eccentric shape, the end of the periphery of eccentric cam body and the fixing axle Portion's cooperation, to make the fixing axle move in fixed body, on the eccentric cam body by rotating the eccentric cam body It is provided with wrench portion.

Further for facilitating whether identification pushing hands rotate in place, the hand pushing device further includes that pushing hands rotate in place limit Component, the pushing hands limit assembly that rotate in place includes baffle and confinement block, and the baffle is connected to by back, the confinement block It is arranged in pushing hands, when pushing hands rotate in place, the baffle offsets with confinement block.

Further for the rotation and locking for facilitating controller bay, the armrest system further includes positioning mechanism, described fixed Position mechanism includes locating piece and spring, and the intermediate position of the connecting rod is provided with annular groove and with annular groove connection and in axial direction On the positioning groove at annular groove rear is set, the locating piece is screwed on handrail, when controller bay is relative to handrail activity When annular groove on to connecting rod and the locating piece cooperate, the controller bay can armrest rotate in a circumferential direction, at this point, described Controller bay is in activity bit state；When controller bay is matched relative to the positioning groove in handrail activity to connecting rod with locating piece When conjunction, the controller bay and the handrail are locked, at this point, the controller bay is in locking bit state；The one of the spring End offsets with handrail, and the other end of the spring is connected with connecting rod, to rotate in a circumferential direction when the connecting rod to locating piece position When position opposite with positioning groove on annular groove, the spring is supplied to one restoring force of connecting rod, and locating piece cooperation is made to exist On positioning groove.

It sits down or stands up from side assisting user further for convenient, the handrail is rotatably connected on by back, institute Stating armrest system further includes that the swing position being arranged between handrail and seat frame in order to adjustable handrail relative to backrest is helped Hand oscillation adjuster, wherein

The handrail oscillation adjuster include interior telescopic rod, external extension bar and setting outer telescopic rod and interior telescopic rod it Between locking mechanism, the upper end of the external extension bar and handrail are hinged, and the lower end of the interior telescopic rod is connect with seat frame, The upper end of the interior telescopic rod and the lower end of the external extension bar are slidably connected, when interior telescopic rod and external extension bar are relatively sliding When moving to lower position, the locking mechanism is used to lock the relative position of the interior telescopic rod and external extension bar, wherein

The locking mechanism includes clamping block and lock shaft, and the clamping block is fixedly connected on external extension bar, the lock Dead axle is slidably disposed in clamping block, is provided with lock hole on the lower end of the interior telescopic rod, when interior telescopic rod and outside When telescopic rod slides into lower position relatively, at least part of the lock shaft is embedded in the lock hole, the locking machine Structure further includes slide block and adjustable spring, and the slide block is flexibly connected with the lock shaft, and the adjustable spring is sleeved on lock On dead axle, be provided with block body in the lock shaft, one end of the adjustable spring and clamping block abut, the adjustable spring it is another One end and block body abut, so that when interior telescopic rod and external extension bar slide into lower position, adjustable spring is supplied to lock shaft One restoring force is embedded at least part of lock shaft in lock hole.

Further, the hinge bar is provided with two, wherein one end of a hinge bar is hinged on the left-hand end of fore-stock, One end of another hinge bar is hinged on the right-hand end of fore-stock, and the other end of two hinge bars is hinged on footrest frame, The hinge bar is 0~90 ° relative to the rotation amplitude of fore-stock, rotation amplitude of the footrest frame relative to hinge bar It is 0~90 °, the foot pedal has high gear and low gear, when the hinge bar is 0 ° relative to the rotation amplitude of fore-stock And the footrest frame, when relative to the rotation amplitude of hinge bar being also 0 °, foot pedal is in low gear；When the hinge bar phase When rotation amplitude for fore-stock is 90 ° and the footrest frame relative to the rotation amplitude of hinge bar is also 90 °, foot pedal In high gear.

Using above-mentioned technical proposal, the utility model has the following beneficial effects:

1, traction fiber is pulled, the deploying and retracting axis connecting by connector with traction fiber takes off by traction force, and then from shift slot From, while folding and unfolding spring is in compressive state by compression, when deploying and retracting axis turns to another shift slot, discharges traction fiber, folding and unfolding The rebound of spring drives the reset of deploying and retracting axis and then the tail portion of deploying and retracting axis is made to be embedded in shift slot, and then completes the gear tune to backrest Section, it is simple and convenient, traction fiber is pulled, deploying and retracting axis is made to turn to non-position retaining plate region, the achievable folding to bracket；

2, part user, which opens, forgets to check whether backrest is fixed appropriate, just direct seat after folded electric wheelchair Onto electric wheelchair, if wheelchair backrest is not fixed appropriate, some potential safety problems there is, the utility model is opened Afterwards, if deploying and retracting axis is in the non-shift slot region of position retaining plate, folding and unfolding spring is in confined state, and user takes wheelchair Afterwards, backrest stress, deploying and retracting axis and position retaining plate along deploying and retracting axis swinging track it is opposite slide, when deploying and retracting axis slides to shift slot by In the screen resilience and then insertion shift slot of compressed folding and unfolding spring, to complete the fixation to backrest, the utility model can Protective action is played to user, avoids making user danger occur because backrest is unlocked appropriate；

3, pushing hands relative to backrest rotate during, when pushing hands rotate in place, be arranged in by back baffle and The confinement block being arranged in pushing hands offsets, and acting wrench portion at this time protrudes at least part of eccentric cam body driving fixing axle In fixation hole, at the same time, reset spring is in compressive state by block piece compression, when rotation eccentric cam body makes in fixing axle When thrust reduces, the pressure of the block piece born on compressed reset spring also reduces therewith, and reset spring resets and then band Dynamic fixing axle is detached from fixation hole and retracts in fixed body, and then facilitates the rotation of pushing hands, and the utility model structure is simple, operation side Just, when electric wheelchair is idle or needs to carry, foldable pushing hands reduces space occupied, can be when electric wheelchair comes into operation Pushing hands is locked after rotateing in place；

4, when controller bay is in locking bit state relative to handrail, spring is in normal condition, when along connecting rod It is axial to match controller bay with the locating piece relative to the annular groove in handrail activity to connecting rod to one external force of controller When conjunction, the controller bay can armrest rotate in a circumferential direction, at this point, the controller bay is in activity bit state, while spring It is compressed, when connecting rod, which rotates in a circumferential direction, is in the annular groove position opposite with positioning groove to locating piece, compressed spring Rebound drive connecting rod reset, and then make locating piece cooperation on positioning groove, controller bay again relative to handrail be in lock Positioning states, the controller bay rotation, locking of the utility model are convenient；

5, the armrest system further includes handrail oscillation adjuster, when interior telescopic rod and external extension bar are opposite to be slided, The side wall of the lock shaft and interior telescopic rod abuts against, and adjustable spring is in compressive state, when interior telescopic rod and external extension bar phase When to sliding into lower limit, the rebound of compressed adjustable spring is driven at least part insertion lock hole of lock shaft, from And handrail is locked, at this point, the lock shaft can be made to be detached from lock hole by acting the slide block, interior telescopic rod again can be opposite External extension bar sliding, by using handrail oscillation adjuster control handrail rise and fall operation, facilitate assistance personnel from Side assisting user sit on electric wheelchair up or get off from electric wheelchair, user can also sit down from side or Body, it is user-friendly, it provides convenience to user；

6, the utility model has two gears of high gear and low gear, when rotation amplitude of the hinge bar relative to fore-stock For 0 ° and when the footrest frame relative to the rotation amplitude of hinge bar is also 0 °, foot pedal is in low gear, the utility model It is suitble to the user of 1.7 meters of height or more to use, handicapped user is also suitble to sit on wheelchair up by foot pedal, when The hinge bar relative to the rotation amplitude of fore-stock is 90 ° and the footrest frame relative to the rotation amplitude of hinge bar is also At 90 °, foot pedal is in high gear, and the utility model is suitble to 1.7 meters of height user below to use, the utility model structure Simply, gear is easy to adjust, the user suitable for different heights.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the foldable electric wheeled chair of the utility model；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the structural schematic diagram of the recliner of the utility model；

Fig. 4 is another structural schematic diagram of the recliner of the utility model；

Fig. 5 is the structural schematic diagram of the position retaining plate of the utility model；

Fig. 6 is the structural schematic diagram of the fixation device of the utility model；

Fig. 7 is that the pushing hands of the utility model rotate in place the structural schematic diagram of limit assembly；

Fig. 8 is the structural schematic diagram of the positioning mechanism of the utility model；

Fig. 9 is the structural schematic diagram of the locking mechanism of the utility model；

Figure 10 is the structural schematic diagram of the locking mechanism another kind of the utility model；

Figure 11 is the structural schematic diagram of the reversible foot pedal device of the utility model；

Figure 12 is the left view of Figure 11.

Specific embodiment

In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached Figure, is described in further detail the utility model.

As shown in Fig. 1~12, a kind of foldable electric wheeled chair, it includes:

Bracket, the bracket includes fore-stock 11, after-poppet 12, front wheel carrier 13, rear wheel frame 14 and seat frame 15, before described The lower end of wheel carrier 13 is equipped with front wheels 16, and the lower end of the rear wheel frame 14 is equipped with rear wheels 17, the front wheel carrier 13 it is upper End, the upper end of rear wheel frame 14, seat frame 15 are hinged, and the one end of the fore-stock 11 is rotatably connected on front wheel carrier 13, institute The one end for stating after-poppet 12 is rotatably connected on rear wheel frame 14, the other end of the fore-stock 11 and after-poppet 12 it is another One end is hinged, and specifically, the upper end of the front wheel carrier 13, the upper end of rear wheel frame 14, seat frame 15 are cut with scissors by rotation axis 18 It is connected together；

Adjustable back-rest means for chair, the adjustable back-rest means for chair include being rotatablely connected respectively with after-poppet 12, seat frame 15 Backrest 2 and be arranged between backrest 2 and after-poppet 12 and the recliner for adjusting backrest 2；

Hand pushing device, the hand pushing device include that the pushing hands 21 being rotatably connected on backrest 2 and at least one setting are being leaned on Back 2 and pushing hands 21 between and when pushing hands 21 rotate in place for locking fixation of the pushing hands 21 relative to the turned position of backrest 2 Device；

Armrest system, the armrest system include the handrail 31 being mounted on backrest 2, controller bay 32, are mounted on control Controller 33 on device frame 32 and for controlling electric wheelchair, the controller bay 32 include connecting rod 34, the connecting rod 34 It is axially movable and can be inserted into rotating in a circumferential direction in handrail 31, specifically, the controller 33 is including horizontal ends 33a and along institute The beveled end 33b that horizontal ends 33a is obliquely installed upwards and is connected with the horizontal ends 33a is stated, the horizontal ends 33a is mounted on On controller bay 32；

Reversible foot pedal device, the reversible foot pedal device include at least one hinge bar 41 and footrest frame 42, one end of the hinge bar 41 is hinged on fore-stock 11, and the footrest frame 42 is hinged on the other end of hinge bar 41, institute It states and is provided with foot pedal 43 on footrest frame 42；

For driving the power device 10 of rear wheels 17, the power device 10 is connected with controller 33 by connection line It connects.

As shown in Figure 1, causing danger to user due to electric wheelchair is swung back in order to prevent, the bracket further includes auxiliary Frame, the auxiliary frame include:

Cross bar 191, one end of the cross bar 191 are connected to the left side of rear wheel frame 14, the other end connection of the cross bar 191 On the right side of rear wheel frame 14；

Auxiliary wheel carrier 192, the auxiliary wheel carrier 192 are connected on cross bar 191, are provided with jockey pulley group on the auxiliary wheel carrier 192 193；

One end of at least one connecting rod 194, the connecting rod 194 is hinged on after-poppet 12, the other end of the connecting rod 194 It is connected on auxiliary wheel carrier 192.

As shown in Fig. 1,3,4,5, the recliner include jack, draw-off mechanism and with jack phase The position retaining plate 5 of cooperation, the jack are arranged on after-poppet 12, and shift slot 51 is provided on the position retaining plate 5, described Position retaining plate 5 is connected on backrest 2, and the draw-off mechanism is connected with jack, will pass through movement draw-off mechanism control folding and unfolding It is detached from shift slot 51 on a part insertion position retaining plate 5 of mechanism or from shift slot 51；Wherein,

The jack includes cylinder 61, deploying and retracting axis 62 and folding and unfolding spring 63, and the cylinder 61 is connected to after-poppet 12 On, the deploying and retracting axis 62 is axial movably through cylinder 61, head and the draw-off mechanism phase of the deploying and retracting axis 62 along cylinder 61 It connects, is provided with block 64 on the deploying and retracting axis 62, the folding and unfolding spring 63 is sleeved on the outside of the deploying and retracting axis 62, described The end of cylinder 61 where 62 head of one end and deploying and retracting axis of folding and unfolding spring 63 abuts against, the other end of the folding and unfolding spring 63 It is abutted with the block 64, will pass through by the reset of the rebound drive deploying and retracting axis 62 of compression folding and unfolding spring 63 and make deploying and retracting axis 62 Tail portion be embedded in shift slot 51；

The draw-off mechanism includes traction fiber 65 and connector 66, and the head of deploying and retracting axis 62 is arranged in the connector 66, The traction fiber 65 is connected with connector 66, is provided with protective case 67 on the connecting portion of the traction fiber 65 and connector 66；

At least two shift slots 51 are provided on the position retaining plate 5, and shift slot 51 is arranged in jack with backrest 2 and after-poppet 12 rotation connection axis 68 centered on swinging track line on.

As shown in Figure 1, there are two the jack settings, one of to receive further for backrest 2 is preferably adjusted The left side of after-poppet 12 is arranged in laying mechanism, another jack is arranged in the right side of after-poppet 12, position retaining plate 5 and with receipts There are two the connected draw-off mechanism of laying mechanism is also respectively set, the left side of backrest 2 is arranged in one of position retaining plate 5, another The right side of backrest 2 is arranged in position retaining plate 5, and the traction fiber 65 of two draw-off mechanisms links together.

Traction fiber 65 is pulled, the deploying and retracting axis 62 connecting by connector 66 with traction fiber 65 is by traction force, and then from gear Position slot 51 is detached from, while folding and unfolding spring 63 is released in compressive state when deploying and retracting axis 62 turns to another shift slot 51 by compression Traction fiber 65 is put, the rebound of folding and unfolding spring 63 drives the reset of deploying and retracting axis 62 and then the tail portion of deploying and retracting axis 62 is made to be embedded in shift slot 51, and then complete to adjust the gear of backrest 2, it is simple and convenient, traction fiber 65 is pulled, deploying and retracting axis 62 is made to turn to non-position retaining plate area Domain, the achievable folding to bracket；Part user forgets to check whether backrest 2 is fixed after opening folded electric wheelchair It is appropriate, it just directly sits on electric wheelchair, if the backrest 2 of wheelchair is not fixed appropriate, there is some potential safety problems, this After utility model is opened, if deploying and retracting axis 62 is in the non-shift slot region of position retaining plate 5, folding and unfolding spring 63 is in by compression shape State, after user takes wheelchair, 2 stress of backrest, deploying and retracting axis 62 and position retaining plate 5 slide relatively along the swinging track of deploying and retracting axis 62, It is embedded in shift slot 51 in turn when deploying and retracting axis 62 slides to shift slot 51 by the screen resilience of compressed folding and unfolding spring 63, thus The fixation to backrest 2 is completed, the utility model can play protective action to user, avoid due to backrest 2 is unlocked appropriate There is user dangerous.

As shown in fig. 6, the fixed device includes:

Fixed body 71, the fixed body 71 are arranged on backrest 2；

Fixing axle 72, the fixing axle 72 are movably disposed in fixed body 71；

Fixation hole 22 in pushing hands 21 is set；

Fixing axle driving mechanism, the fixing axle driving mechanism are mounted on fixed body 71, and the fixing axle driving machine Structure, when pushing hands 21 rotate in place relative to backrest 2, acts the fixation for driving fixing axle 72 to move in fixed body 71 Axis driving mechanism protrudes at least part of the fixing axle 72 in the fixation hole 22；

Reset spring 73 is provided with block piece 74 in the fixing axle 72, and the reset spring 73 is sleeved on fixing axle 72 On, one end of the reset spring 73 is abutted with block piece 74, and the other end and the fixed body 71 of the reset spring 73 abut against, with It will pass through and drive fixing axle 72 to be detached from fixation hole 22 by the rebound of compressed reset spring 73.As shown in Fig. 6, the fixation Axis driving mechanism includes eccentric cam body 75, and the eccentric cam body 75 is hinged on fixed body 71 in eccentric shape, eccentric cam The end of the periphery of body 75 and the fixing axle 72 cooperates, to make the fixation by rotating the eccentric cam body 75 Axis 72 moves in fixed body 71, is provided with wrench portion 76 on the eccentric cam body 75.

As shown in Fig. 1,7, identify whether pushing hands 21 rotate in place for convenience, the hand pushing device further includes pushing hands rotation Limit assembly in place, the pushing hands limit assembly that rotate in place includes baffle 77 and confinement block 78, and the baffle 77, which is connected to, to be leaned on On back 2, the confinement block 78 is arranged in pushing hands 21, when pushing hands 21 rotate in place, the baffle 77 and 78 phase of confinement block It supports.

During pushing hands 21 is rotated relative to backrest 2, when pushing hands 21 rotate in place, the gear on backrest 2 is set Plate 77 and the confinement block 78 being arranged in pushing hands 21 offset, and acting wrench portion 76 at this time makes eccentric cam body 75 drive fixing axle 72 At least part protrude into fixation hole 22, at the same time, reset spring 73 by block piece 74 compression be in compressive state, work as rotation When eccentric cam body 75 reduces the thrust in fixing axle 72, the pressure of the block piece 74 born on compressed reset spring 73 Power also reduces therewith, and reset spring 73 resets and then drives fixing axle 72 to be detached from fixation hole 22 and retract in fixed body 71, in turn Facilitating the rotation of pushing hands 21, the utility model structure is simple, and it is easy to operate, it is foldable when electric wheelchair is idle or needs to carry Pushing hands 21 is played, space occupied is reduced, when electric wheelchair comes into operation, can be locked after pushing hands 21 rotate in place.

As shown in figure 8, the armrest system further includes positioning further for the rotation and locking that facilitate controller bay 32 Mechanism, the positioning mechanism include locating piece 35 and spring 36, and the intermediate position of the connecting rod 34 is provided with 37 He of annular groove The positioning groove 38 at 37 rear of annular groove is connected and is arranged in the axial direction with annular groove 37, and the locating piece 35, which is screwed in, to be helped On hand 31, when controller bay 32 cooperates relative to 31 activity of handrail to the annular groove 37 in connecting rod 34 with the locating piece 35 When, the controller bay 32 can armrest 31 rotate in a circumferential direction, at this point, the controller bay 32 is in activity bit state；Work as control When device frame 32 processed cooperates relative to 31 activity of handrail to the positioning groove 38 in connecting rod 34 with locating piece 35, the controller Frame 32 and the handrail 31 lock, at this point, the controller bay 32 is in locking bit state；One end of the spring 36 and handrail 31 offset, and the other end of the spring 36 is connected with connecting rod 34, to rotate in a circumferential direction when the connecting rod 34 to locating piece 35 On annular groove 37 when the position opposite with positioning groove 38, the spring 36 is supplied to 34 1 restoring force of connecting rod, and it is fixed to make The position cooperation of part 35 is on positioning groove 38.Specifically, barricade 39, one end of the spring 36 and barricade are provided in the handrail 39 offset.

When controller bay 32 is in locking bit state relative to handrail 31, spring 36 is in normal condition, when along connection The axial of bar 34 makes controller bay 32 relative to 31 activity of handrail to the annular groove in connecting rod 34 to 33 1 external force of controller 37 with the locating piece 35 cooperate when, the controller bay 32 can armrest 31 rotate in a circumferential direction, at this point, the controller bay 32 In activity bit state, while spring 36 is compressed, and is in annular groove 37 when connecting rod 34 rotates in a circumferential direction to locating piece 35 and is determined When the opposite position of groove 38 of position, the rebound of compressed spring 36 drives connecting rod 34 to reset, and then cooperates locating piece 35 On positioning groove 38, controller bay 32 is in locking bit state, the controller bay 32 of the utility model relative to handrail 31 again Rotation, locking are convenient, when user eats, by controller bay 32 relative to 31 activity of handrail to activity bit state, controller bay 32 rotate 180 ° in activity bit state relative to handrail 31, and beveled end 33b becomes the shape that setting is tilted down along horizontal ends 33a State, beveled end 33b can be at the lower section of dining table, to further user at a distance from dining table, and then convenient for users to having dinner.

As shown in Fig. 1,2,9,10, sits down or stand up from side assisting user further for convenient, the handrail 31 It is rotatably connected on backrest 2, the armrest system further includes being arranged between handrail 31 and seat frame 15 in order to adjustable handrail The 31 handrail oscillation adjuster relative to the swing position of backrest 2, wherein

The handrail oscillation adjuster includes interior telescopic rod 81, external extension bar 82 and setting in outer telescopic rod 82 and interior stretches Locking mechanism between contracting bar 81, the upper end of the external extension bar 82 and handrail 31 are hinged, the lower end of the interior telescopic rod 81 Portion is connect with seat frame 15, and the upper end of the interior telescopic rod 81 and the lower end of the external extension bar 82 are slidably connected, when interior When telescopic rod 81 and external extension bar 82 slide into lower position relatively, the locking mechanism is for locking 81 He of interior telescopic rod The relative position of external extension bar 82；

The locking mechanism includes clamping block 83 and lock shaft 84, and the clamping block 83 is fixedly connected on external extension bar 82 On, the lock shaft 84 is slidably disposed in clamping block 83, is provided with lock hole on the lower end of the interior telescopic rod 81 85, when interior telescopic rod 81 and external extension bar 82 are opposite slides into lower position, at least part insertion of the lock shaft 84 In the lock hole 85, the locking mechanism further includes slide block 86 and adjustable spring 87, the slide block 86 and the locking Axis 84 is flexibly connected, and the adjustable spring 87 is sleeved in lock shaft 84, and block body 88 is provided in the lock shaft 84, described One end of adjustable spring 87 and clamping block 83 abut, and the other end and block body 88 of the adjustable spring 87 abut, to stretch when interior When contracting bar 81 and external extension bar 82 slide into lower position, adjustable spring 87 is supplied to 84 1 restoring force of lock shaft, makes lock shaft In 84 at least part insertion lock hole 85.

When interior telescopic rod 81 and external extension bar 82 slide relatively, the side wall of the lock shaft 84 and interior telescopic rod 81 offsets It connects, adjustable spring 87 is in compressive state, compressed when interior telescopic rod 81 and external extension bar 82 relatively slide to lower limit The rebound of adjustable spring 87 drives at least part insertion lock hole 85 of lock shaft 84, so that handrail 31 is locked, at this point, logical It crosses and acts the slide block 86, the lock shaft 84 can be made to be detached from lock hole 85, interior telescopic rod 81 again can be with respect to external extension bar 82 Sliding controls the rise of handrail 31 by using handrail oscillation adjuster and falls operation, assistance personnel is facilitated to assist from side User is helped to sit on electric wheelchair up or get off from electric wheelchair, user can also sit down or stand up from side, side Just the use of user, provides convenience to user.

As shown in Figure 11,12, the hinge bar 41 is provided with two, wherein one end of a hinge bar 41 is hinged on preceding branch The left-hand end of frame 11, one end of another hinge bar 41 are hinged on the right-hand end of fore-stock 11, the other end of two hinge bars 41 It is hinged on footrest frame 42, the hinge bar 41 is 0~90 ° relative to the rotation amplitude of fore-stock 11, the foot pedal Frame 42 is also 0~90 ° relative to the rotation amplitude of hinge bar 41, and the foot pedal 43 has high gear and low gear, when described Hinge bar 41 is 0 ° and rotation amplitude of the footrest frame 42 relative to hinge bar 41 relative to the rotation amplitude of fore-stock 11 When being also 0 °, foot pedal 43 is in low gear；When the hinge bar 41 is 90 ° and institute relative to the rotation amplitude of fore-stock 11 When to state footrest frame 42 relative to the rotation amplitude of hinge bar 41 be also 90 °, foot pedal 43 is in high gear.Specifically, described The both ends of hinge bar 41 are each provided with hinged groove 44, and the hinged groove 44 has contacting wall 45, and the end of the fore-stock 11 is set It is equipped with fore-stock hinged block 47, the end of the footrest frame 42 is provided with footrest frame hinged block 48, and the fore-stock is hinged Block 47 is embedded in the hinged groove 44 of 41 upper end of hinge bar, and fore-stock hinged block 47 is hinged on hinge bar 41 by pin shaft 46 In the hinged groove 44 of upper end, the footrest frame hinged block 48 is embedded in the hinged groove 44 of 41 lower end of hinge bar and passes through pin shaft 46 are hinged on footrest frame hinged block 48 in the hinged groove 44 of 41 lower end of hinge bar, the end of the fore-stock hinged block 47 Side is the first fillet 47a, and the other side is the first right angle 47b, during hinge bar 41 is rotated to the first side fillet 47a, Always there is certain gap between contacting wall 45 and the first fillet 47a, hinge bar 41 can continue to rotate to the first side fillet 47a, During hinge bar 41 is rotated to the first right angle side 47b, contacting wall 45 can be abutted against with the first right angle 47b, and then be limited Hinge bar 41 continues to rotate to the first right angle side 47b, and the side of the end of the footrest frame hinged block 48 is the second fillet 48a, the other side are the second right angle 48b, the second fillet 48a and the first fillet 47a in the same side, in footrest frame 42 to the During two sides fillet 48a rotate, there are certain gap, footrest frame 42 between the second fillet 48a and contacting wall 45 always It can continue to rotate to the second side fillet 48a, during footrest frame 42 is rotated to the second right angle side 48b, the second right angle 48b meeting It is abutted against with contacting wall 45, and then limits footrest frame 42 and continue to rotate to the second right angle side 48b.

The utility model has two gears of high gear and low gear, when rotation width of the hinge bar 41 relative to fore-stock 11 For degree for 0 ° and when the footrest frame 42 relative to the rotation amplitude of hinge bar 41 is also 0 °, foot pedal 43 be in low gear, Utility model is suitble to the user of 1.7 meters of height or more to use, and handicapped user is also suitble to sit on by foot pedal 43 Wheelchair gets on, when the hinge bar 41 is 90 ° and the footrest frame 42 relative to hinge relative to the rotation amplitude of fore-stock 11 When the rotation amplitude of extension bar 41 is also 90 °, foot pedal 43 is in high gear, and the utility model is suitble to that 1.7 meters of height is below to be made User uses, and the utility model structure is simple, and gear is easy to adjust, the user suitable for different heights.

When electric wheelchair is idle or needs to carry, traction fiber 65 is pulled, while pulling back backrest 2, completes the folding to bracket It is folded, and then wrench portion 76 is acted, so that pushing hands 21 is in movable state, folds pushing hands 21, afterwards turn over foot pedal 43, that is, complete Folding to electric wheelchair, it is simple and fast.

Particular embodiments described above, to the utility model solve the technical issues of, technical scheme and beneficial effects into It has gone further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and has not had to In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvement done Deng should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of foldable electric wheeled chair, which is characterized in that it includes:

Bracket, the bracket include fore-stock (11), after-poppet (12), front wheel carrier (13), rear wheel frame (14) and seat frame (15), The lower end of the front wheel carrier (13) is equipped with front wheels (16), and the lower end of the rear wheel frame (14) is equipped with rear wheels (17), institute State the upper end of front wheel carrier (13), the upper end of rear wheel frame (14), seat frame (15) are hinged, the one end of the fore-stock (11) turns Dynamic to be connected on front wheel carrier (13), the one end of the after-poppet (12) is rotatably connected on rear wheel frame (14), the fore-stock (11) the other end of the other end and after-poppet (12) is hinged；

Adjustable back-rest means for chair, the adjustable back-rest means for chair include being rotatablely connected respectively with after-poppet (12), seat frame (15) Backrest (2) and be arranged between backrest (2) and after-poppet (12) and be used to adjust the recliners of backrest (2)；

Hand pushing device, the hand pushing device include that the pushing hands (21) being rotatably connected on backrest (2) and at least one setting are being leaned on It is used between back (2) and pushing hands (21) and when pushing hands (21) rotate in place lock rotation of the pushing hands (21) relative to backrest (2) The fixation device of position；

Armrest system, the armrest system include the handrail (31) being mounted on backrest (2), controller bay (32), are mounted on control Controller (33) on device frame (32) processed and for controlling electric wheelchair, the controller bay (32) includes connecting rod (34), institute Connecting rod (34) is stated to be axially movable and can be inserted into rotating in a circumferential direction in handrail (31)；

Reversible foot pedal device, the reversible foot pedal device include at least one hinge bar (41) and footrest frame (42), one end of the hinge bar (41) is hinged on fore-stock (11), and the footrest frame (42) is hinged on hinge bar (41) The other end, be provided with foot pedal (43) on the footrest frame (42)；

For driving the power device (10) of rear wheels (17), the power device and controller (33) are connected by connection line It connects.

2. foldable electric wheeled chair according to claim 1, which is characterized in that the bracket further includes auxiliary frame, described Auxiliary frame includes:

Cross bar (191), one end of the cross bar (191) are connected to the left side of rear wheel frame (14), the other end of the cross bar (191) It is connected to the right side of rear wheel frame (14)；

Auxiliary wheel carrier (192), the auxiliary wheel carrier (192) are connected on cross bar (191), are provided with jockey pulley on the auxiliary wheel carrier (192) Group (193)；

One end of at least one connecting rod (194), the connecting rod (194) is hinged on after-poppet (12), the connecting rod (194) it is another One end is connected on auxiliary wheel carrier (192).

3. foldable electric wheeled chair according to claim 1, it is characterised in that: the recliner includes radio and tape player Structure, draw-off mechanism and the position retaining plate (5) matched with jack, the jack is arranged on after-poppet (12), described It is provided on position retaining plate (5) shift slot (51), the position retaining plate (5) is connected on backrest (2), the draw-off mechanism and radio and tape player Structure is connected, in the shift slot (51) in a part insertion position retaining plate (5) will pass through movement draw-off mechanism control jack Or it is detached from from shift slot (51)；Wherein,

The jack includes cylinder (61), deploying and retracting axis (62) and folding and unfolding spring (63), and the cylinder (61) is propped up after being connected to On frame (12), the deploying and retracting axis (62) is axial movably through cylinder (61), the head of the deploying and retracting axis (62) along cylinder (61) Portion is connected with draw-off mechanism, is provided with block (64) on the deploying and retracting axis (62), and the folding and unfolding spring (63) is sleeved on described The outside of deploying and retracting axis (62), one end of the folding and unfolding spring (63) and the end phase of the cylinder (61) where deploying and retracting axis (62) head It abuts, the other end and the block (64) of the folding and unfolding spring (63) abut, will pass through by compression folding and unfolding spring (63) Rebound drives the reset of deploying and retracting axis (62) and the tail portion of deploying and retracting axis (62) is made to be embedded in shift slot (51)；

The draw-off mechanism includes traction fiber (65) and connector (66), head of connector (66) setting in deploying and retracting axis (62) Portion, the traction fiber (65) are connected with connector (66), are arranged on the connecting portion of the traction fiber (65) and connector (66) There are protective case (67)；

It is provided at least two shift slots (51) on the position retaining plate (5), and shift slot (51) is arranged in jack to lean on On swinging track line centered on the rotation connection axis (68) of back (2) and after-poppet (12).

4. foldable electric wheeled chair according to claim 3, it is characterised in that: there are two the jack settings, In the setting of jack in the left side of after-poppet (12), the setting of another jack is in the right side of after-poppet (12), gear There are two position plate (5) and the draw-off mechanism being connected with jack are also respectively set, one of position retaining plate (5) is arranged in backrest (2) left side, another position retaining plate (5) are arranged on the right side of backrest (2), and the traction fiber (65) of two draw-off mechanisms is connected to one It rises.

5. foldable electric wheeled chair according to claim 1, which is characterized in that the fixed device includes:

Fixed body (71), the fixed body (71) are arranged on backrest (2)；

Fixing axle (72), the fixing axle (72) are movably disposed in fixed body (71)；

The fixation hole (22) being arranged on pushing hands (21)；

Fixing axle driving mechanism, the fixing axle driving mechanism are mounted on fixed body (71), and the fixing axle driving mechanism For driving fixing axle (72) to move in fixed body (71), when pushing hands (21) rotate in place relative to backrest (2), institute is acted Fixing axle driving mechanism is stated, protrudes at least part of the fixing axle (72) in the fixation hole (22)；

Reset spring (73) is provided with block piece (74) on the fixing axle (72), and the reset spring (73) is sleeved on fixing axle (72) on, one end of the reset spring (73) is abutted with block piece (74), the other end and fixed body of the reset spring (73) (71) it abuts against, drives fixing axle (72) to be detached from fixation hole (22) by the rebound of compressed reset spring (73) will pass through.

6. foldable electric wheeled chair according to claim 5, it is characterised in that: the fixing axle driving mechanism includes bias Cam body (75), the eccentric cam body (75) are hinged on fixed body (71) in eccentric shape, the outer circle of eccentric cam body (75) The end of face and the fixing axle (72) cooperates, to make the fixing axle (72) by rotating the eccentric cam body (75) It is moved in fixed body (71), is provided with wrench portion (76) on the eccentric cam body (75).

7. foldable electric wheeled chair according to claim 1, it is characterised in that: the hand pushing device further includes pushing hands rotation Limit assembly in place, the pushing hands limit assembly that rotate in place includes baffle (77) and confinement block (78), and the baffle (77) is even It connecing on backrest (2), the confinement block (78) is arranged on pushing hands (21), when pushing hands (21) rotate in place, the baffle (77) it offsets with confinement block (78).

8. according to benefit require 1 described in foldable electric wheeled chair, it is characterised in that: the armrest system further includes positioning mechanism, The positioning mechanism includes locating piece (35) and spring (36), and the intermediate position of the connecting rod (34) is provided with annular groove (37) With the positioning groove (38) that annular groove (37) rear is connected and be arranged in the axial direction with annular groove (37), the locating piece (35) Be screwed on handrail (31), when controller bay (32) relative to handrail (31) activity on connecting rod (34) annular groove (37) with The locating piece (35) cooperate when, the controller bay (32) can armrest (31) rotate in a circumferential direction, at this point, the controller bay (32) it is in activity bit state；When controller bay (32) is relative to handrail (31) activity to the positioning groove on connecting rod (34) (38) when cooperating with locating piece (35), the controller bay (32) and the handrail (31) are locked, at this point, the controller bay (32) it is in locking bit state；One end of the spring (36) offsets with handrail (31), the other end of the spring (36) and company Extension bar (34) be connected, so as to when the connecting rod (34) rotate in a circumferential direction to locating piece (35) be located on annular groove (37) with positioning it is recessed When the opposite position of slot (38), the spring (36) is supplied to (34) one restoring force of connecting rod, makes locating piece (35) cooperation fixed On position groove (38).

9. foldable electric wheeled chair according to claim 1, it is characterised in that: the handrail (31) is rotatably connected on backrest (2) on, the armrest system further includes being arranged between handrail (31) and seat frame (15) in order to which adjustable handrail (31) is opposite In the handrail oscillation adjuster of the swing position of backrest (2), wherein

The handrail oscillation adjuster includes interior telescopic rod (81), external extension bar (82) and setting in outer telescopic rod (82) and interior Locking mechanism between telescopic rod (81), the upper end of the external extension bar (82) and handrail (31) hingedly, the interior telescopic rod (81) lower end is connect with seat frame (15), the upper end of the interior telescopic rod (81) and the lower end of the external extension bar (82) Portion is slidably connected, and when interior telescopic rod (81) and external extension bar (82) are opposite slides into lower position, the locking mechanism is used for Lock the relative position of the interior telescopic rod (81) and external extension bar (82), wherein

The locking mechanism includes clamping block (83) and lock shaft (84), and the clamping block (83) is fixedly connected on external extension bar (82) on, the lock shaft (84) is slidably disposed in clamping block (83), is set on the lower end of the interior telescopic rod (81) Lock hole (85) are equipped with, when interior telescopic rod (81) and external extension bar (82) are opposite slides into lower position, the lock shaft (84) at least part is embedded in the lock hole (85), and the locking mechanism further includes slide block (86) and adjustable spring (87), the slide block (86) is flexibly connected with the lock shaft (84), and the adjustable spring (87) is sleeved on lock shaft (84) On, it is provided with block body (88) on the lock shaft (84), one end of the adjustable spring (87) and clamping block (83) abut, described The other end and block body (88) of adjustable spring (87) abut, to slide into lower limit when interior telescopic rod (81) and external extension bar (82) When position, adjustable spring (87) is supplied to (84) one restoring force of lock shaft, and at least part of lock shaft (84) is made to be embedded in locking In hole (85).

10. foldable electric wheeled chair according to claim 1, it is characterised in that: the hinge bar (41) is provided with two, Wherein one end of a hinge bar (41) is hinged on the left-hand end of fore-stock (11), and one end of another hinge bar (41) is hinged on The right-hand end of fore-stock (11), the other end of two hinge bars (41) are hinged on footrest frame (42), the hinge bar It (41) is 0~90 ° relative to the rotation amplitude of fore-stock (11), rotation of the footrest frame (42) relative to hinge bar (41) Amplitude is also 0~90 °, and the foot pedal (43) has high gear and low gear, when the hinge bar (41) is relative to fore-stock (11) rotation amplitude is 0 ° and the footrest frame (42) when relative to the rotation amplitude of hinge bar (41) being also 0 °, foot pedal (43) it is in low gear；When the hinge bar (41) is 90 ° and the footrest frame relative to the rotation amplitude of fore-stock (11) (42) when the rotation amplitude relative to hinge bar (41) is also 90 °, foot pedal (43) is in high gear.