CN204092377U - A kind of can the wheelchair of speeling stairway - Google Patents

Abstract

The utility model discloses a kind of can the wheelchair of speeling stairway, comprise wheelchair frame and running gear, described running gear comprises telescopic supporting leg assembly and for providing the motor of driving force to supporting leg assembly, supporting leg assembly is at least provided with four, supporting leg assembly comprises first gear of rotary setting on described wheelchair frame, the first support be located on wheelchair frame, is located at the pin on the first gear and is connected with the first bracket slide and is driven the support bar of moving linearly by pin, and support bar is provided with the first chute allowing pin insert.This utility model can the wheelchair of speeling stairway, arranges the supporting leg assembly provided support, by the flexible of supporting leg assembly and reach, realize speeling stairway, and wheelchair climbing operates steadily, good stability, climbing work efficiency is high, also has the advantage that structure is simple, easy to operate.

Description

A kind of can the wheelchair of speeling stairway

Technical field

This utility model belongs to wheelchair technical field, specifically, this utility model relate to a kind of can the wheelchair of speeling stairway.

Background technology

The biggest obstacle of Elderly patients and lower limb disabled is that weakening of not all right ability even lacks, and they not only lose action edge, and the people more needing work capacity is nursed.At present, most of elderly and infirm and limbs the disabled can select wheelchair as their paces instrument, and need household or nursing staff with the use of assisting wheelchair.But traditional wheelchair is mostly and can only travels on level land, and the such obstacle of entablement rank, threshold can not be crossed over, more can not speeling stairway, therefore the range of activity of wheelchair user is very restricted.In order to alleviate above-mentioned disadvantaged group to social economy, the immense pressure that medical treatment and nursing each side is brought, better care old people, the life of people with disability, improve their quality of life, except increasing the accessibility designs in house and various public construction, outside the scope of application of expansion wheelchair, also need to improve existing common wheelchair, make it have both the function of level land traveling and stair climbing.

Utility model content

Technical problem to be solved in the utility model be to provide a kind of can the wheelchair of speeling stairway.

To achieve these goals, the technical scheme that this utility model is taked is: a kind of can the wheelchair of speeling stairway, comprise wheelchair frame and running gear, described running gear comprises telescopic supporting leg assembly and for providing the motor of driving force to supporting leg assembly, supporting leg assembly is at least provided with four, supporting leg assembly comprises first gear of rotary setting on described wheelchair frame, be located at the first support on wheelchair frame, be located at the pin on the first gear and be connected with the first bracket slide and driven the support bar of moving linearly by pin, support bar is provided with the first chute allowing pin insert.

Described pin stretches out towards the side of described first gear, and the axis of pin parallels with the axis of the first gear, the direction of motion of described support bar and the axis perpendicular of pin, the length direction of described first chute and the direction of motion of support bar perpendicular.

Described support bar comprises the sliding shoe that is connected with described first bracket slide and is slidably connected with sliding shoe and the connecting rod extended below sliding shoe, described first chute is located on sliding shoe, and sliding shoe is provided with for driving connecting rod along the driver of the direction moving linearly parallel with the first track length direction.

Described motor rotates by being located at the first gear described in the rack drives on described wheelchair frame, and tooth bar engages with it in the below of the first gear.

Described driver is the electric pushrod, cylinder or the hydraulic cylinder that are connected with described connecting rod.

Described supporting leg assembly also comprises the pedal of rotary setting in described connecting rod lower end and the castor of rotary setting on pedal, the rotation centerline of pedal parallels with the length direction of connecting rod, and the rotation centerline of castor parallels with the axis of described pin.

Described pedal is provided with the brake for providing brake force to described castor.

Described supporting leg assembly also comprises and to be located on described first support and for the lockable mechanism of the first gear described in locking.

Described supporting leg assembly is provided with four altogether, and described motor and described tooth bar are respectively equipped with two, and each motor drive tooth bar successively with the first gears meshing of two supporting leg assemblies of the same side, provide driving force to two the supporting leg assemblies being positioned at the same side.

Originally the wheelchair of speeling stairway the sidepiece that is located at described wheelchair frame can also be comprised and for providing the auxiliary support apparatus of supplemental support.

This utility model can the wheelchair of speeling stairway, arranges the supporting leg assembly provided support, by the flexible of supporting leg assembly and reach, realize speeling stairway, and wheelchair climbing operates steadily, good stability, climbing work efficiency is high, also has the advantage that structure is simple, easy to operate.

Accompanying drawing explanation

This description comprises the following drawings, shown content respectively:

Fig. 1 is the structural representation of this utility model wheelchair;

Fig. 2 is the structural representation of supporting leg assembly;

Fig. 3 is the structural representation of brake;

Fig. 4 is the connection diagram of pedal and support bar;

Fig. 5 is the structural representation of supporting leg assembly after pedal folds;

Fig. 6 is the connection diagram of the first gear and lockable mechanism;

Fig. 7 is the sectional view of lockable mechanism;

Fig. 8 is the connection diagram of motor and gear and wheelchair frame;

Fig. 9 is the structural representation of the wheelchair being configured with auxiliary support apparatus;

Figure 10 is the connection diagram of rocking arm and the second support and auxiliary leg;

Be labeled as in figure:

1, tooth bar; 2, the first motor; 3, the second motor;

4, wheelchair frame; 41, base plate; 42, front vertical pole; 43, rear vertical pole; 44, side plate;

5, supporting leg assembly; 51, the first gear; 52, the first axle; 53, the first support; 54, pin;

55, support bar; 551, sliding shoe; 552, connecting rod; 553, the first chute; 554, the second chute;

56, pedal; 57, foot wheel;

58, lockable mechanism; 581, spreadet spreadet wheel; 582, lock pin; 583, guide post; 584, the first spring; 585, the first coil; 586, the first ferrum core; 587, the first armature;

59, brake; 591, bearing; 592, clamping limb; 593, friction plate; 594, the second ferrum core; 595, the second armature; 596, the second coil;

510, joint; 511, adapter sleeve; 512, tertiary coil; 513, the 3rd armature;

6, auxiliary support apparatus; 61, pull bar; 62, gripper shoe; 63, the second support; 631, column; 632, support arm; 64, auxiliary leg; 65, rocking arm; 66, the second spring; 67, tray;

7, the second gear; 8, the 3rd gear; 9, the 4th gear; 10, the 5th gear; 11, the 6th gear; 12, the 7th gear; 13, the second axle; 14, the 3rd axle.

Detailed description of the invention

Contrast accompanying drawing below, by the description to embodiment, be described in further detail detailed description of the invention of the present utility model, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technical scheme, and contribute to its enforcement.

As shown in Figure 1, this utility model is a kind of can the wheelchair of speeling stairway, and comprise wheelchair frame 4 and running gear, running gear is for the movement of wheelchair provides power.This running gear comprises telescopic supporting leg assembly 5 and for providing the motor of driving force to supporting leg assembly 5, supporting leg assembly 5 is at least provided with four, supporting leg assembly 5 comprises first gear 51 of rotary setting on wheelchair frame 4, the first support 53 be located on wheelchair frame 4, is located at the pin 54 on the first gear 51 and is slidably connected with the first support 53 and is driven the support bar 55 of moving linearly by pin 54, and support bar 55 is provided with the first chute 553 allowing pin 54 insert.By the rotation of the first gear 51, support bar 55 can be driven to do reciprocating linear motion at vertical direction by pin 54, thus the flexible of supporting leg assembly 5 can be realized.

Specifically, the basis that wheelchair frame 4 is taken as user and other parts are installed, roughly the same with wheelchair frame 4 structure of wheelchair general in prior art, intensity is high, has the parts such as a portion, hand push frame.The bottom of wheelchair frame 4 also has a base plate arranged in the horizontal direction 41, and base plate 41 is positioned at the below in a portion.The both sides of wheelchair frame 4 are equipped with the front vertical pole 42 and rear vertical pole 43 that vertically extend, and front vertical pole 42 is also positioned at the front end of wheelchair frame 4, and rear vertical pole 43 is also positioned at the rear end of wheelchair frame 4.The both sides of wheelchair frame 4 are also equipped with side plate 44, two side plates 44 being positioned at vertical plane and are positioned at the middle both sides, seat portion of wheelchair frame 4, and between front vertical pole 42 and rear vertical pole 43.

As shown in Figure 2, the first gear 51 is roller gear, and pin 54 is cylindrical, and the end of pin 54 is fixedly connected with the sidepiece of the first gear 51, and pin 54 stretches out towards the side of the first gear 51 in the horizontal direction.The axis of pin 54 parallels with the axis of the first gear 51, both disalignments, makes pin 54 be arranged to eccentric state, can drive pin 54 synchronous rotary when the first gear 51 rotates.As shown in Figure 6, the first gear 51 is arranged on horizontally disposed first axle 52, and the first axle 52 rotary setting is in front vertical pole 42 or rear vertical pole 43.Pin 54 drives support bar 55 moving linearly by the first chute 553 that support bar 55 is arranged, first support 53 provides guide effect for support bar 55, the direction of motion of support bar 55 and the axis perpendicular of pin 54, the length direction of the first chute 553 and the direction of motion of support bar 55 perpendicular.

As preferably, as shown in Figure 2, first support 53 comprises and to be fixedly connected with front vertical pole 42 or rear vertical pole 43 and for the horizontal part that extends above the first gear 51 in the horizontal direction be fixedly connected with horizontal part and the vertical portion vertically extended, this vertical portion is positioned at the side of the first gear 51, vertical portion also provides guide effect for the movement of support bar 55, and vertical portion is rectangular frame-structure.As shown in the figure, support bar 55 comprises the sliding shoe 551 that is slidably connected with vertical portion and is slidably connected with sliding shoe 551 and the connecting rod 552 extended below sliding shoe 551, the guide groove vertically extended is provided with in the vertical portion of the first support 53, the two ends of sliding shoe 551 embed in guide groove, and sliding shoe 551 can move linearly along guide groove.First chute 553 is located on sliding shoe 551, the elongated slot of the first chute 553 also for extending in the horizontal direction, the axis of its length direction and pin 54 is spatially perpendicular, and the pin 54 on the first gear 51 inserts in the first chute 553, forms crank and translating guide-bar mechanism with sliding shoe 551.

As shown in Figure 2, sliding shoe 551 is also provided with one to parallel with the first chute 553 and to be positioned at the second chute 554 below the first chute 553, the upper end of connecting rod 552 is inserted in this second chute 554 and is realized and being slidably connected of sliding shoe 551, connecting rod 552 relative sliding block 551 only can do straight reciprocating motion along the second chute 554, in the vertical direction, the position relative sliding block 551 of connecting rod 552 keeps motionless, sliding shoe 551 is correspondingly provided with position limiting structure, as baffle plate etc.In order to realize the movement of connecting rod 552, sliding shoe 551 is provided with the driver for driving connecting rod 552 to do straight reciprocating motion.Driver can be the parts that electric pushrod, cylinder or hydraulic cylinder etc. can produce horizontal actuator force, and driver is for being horizontally set on sliding shoe 551, and its clutch end is fixedly connected with the upper end of connecting rod 552.

As preferably, as shown in Figure 2, supporting leg assembly 5 also comprises the pedal 56 of rotary setting in connecting rod 552 lower end and the castor 57 of rotary setting on pedal 56, the rotation centerline of pedal 56 is positioned at vertical plane, parallel with the length direction of connecting rod 552, the rotation centerline of castor 57 is positioned at horizontal plane, parallels with the axis of pin 54.Castor 57 is as the parts for contacting with ground or flooring, and castor 57 can roll, and is convenient to the traveling of wheelchair.Pedal 56 is arranged to rotatable, swings, realize wheelchair turning in the process of moving so that control castor 57.

In the present embodiment, as shown in Figure 1, supporting leg assembly 5 is provided with four altogether, and wherein two supporting leg assemblies 5 are disposed side by side on the front end of wheelchair frame 4, and the first axle 52 of these two supporting leg assemblies 5 is connected with the front vertical pole 42 in two, left and right respectively with the first support 53; Two other supporting leg assembly 5 is disposed side by side on the rear end of wheelchair frame 4, and the first axle 52 of these two supporting leg assemblies 5 is connected with vertical pole 43 behind two, left and right respectively with the first support 53.And two the supporting leg assemblies 5 be positioned on the left of wheelchair frame 4 are symmetrical with two the supporting leg assemblies 5 be positioned on the right side of wheelchair frame 4.

As shown in Figure 8, for provide the motor of driving force to be included in wheelchair frame 4 for individual supporting leg assembly 5 base plate 41 on arrange the first motor 2 and the second motor 3, first motor 2 is for providing driving force to two the supporting leg assemblies 5 be positioned on the right side of wheelchair frame 4, second motor 3 is for providing driving force to two the supporting leg assemblies 5 be positioned on the left of wheelchair frame 4, and the first motor 2 and the second motor 3 are for be horizontally disposed with and for symmetrical.First motor 2 and the second motor 3 respectively by gear drive by power transmission to each supporting leg assembly 5, concrete, the motor shaft of the first motor 2 is provided with second gear 7, second gear 7 engages with the 3rd gear 8,3rd gear 8 and the 4th gear 9 are co-located on the second axle 13 of a level, second axle 13 by support installing on the base plate 41 of wheelchair frame 4, second axle 13 parallels with the motor shaft of the first axle 52 and the first motor 2, and the 3rd gear 8 is coaxial and synchronous rotary with the 4th gear 9.Second gear 7, the 3rd gear 8 and the 4th gear 9 are roller gear, and the power that the first motor 2 produces is passed to the 3rd gear the 8, three gear 8 through the second gear 7 and drives the 4th gear 9 synchronous rotary through the second axle 13.The motor shaft of the second motor 3 is provided with the 5th gear 10,5th gear 10 engages with the 6th gear 11,6th gear 11 and the 7th gear 12 are co-located on the 3rd axle 14 of a level, 3rd axle 14 by support installing on the base plate 41 of wheelchair frame 4,3rd axle 14 is coaxial with the second axle 13, and the 6th gear 11 is coaxial and synchronous rotary with the 7th gear 12.5th gear 10, the 6th gear 11 and the 7th gear 12 are roller gear, and the power that the second motor 3 produces is passed to the 6th gear the 11, six gear 11 through the 5th gear 10 and drives the 7th gear 12 synchronous rotary through the 3rd axle 14.

As shown in Figure 1, 4th gear 9 is meshed with the tooth bar 1 be arranged on the right side of wheelchair frame 4, this tooth bar 1 is be arranged on the base plate 41 of wheelchair frame 4 in the horizontal direction, base plate 41 can be arranged and hold this tooth bar 1 and the guide rail (not shown) it being provided to guiding, 4th gear 9 keeps normal with this tooth bar 1 and engages, the 4th gear 9 rotated can drive the lower straight of the first gear 51 of former and later two the supporting leg assemblies 5 of this tooth bar 1 on the right side of wheelchair frame 4 to move back and forth, and engage to drive it to rotate with the first gear 51, but tooth bar 1 can not engage with two the first gears 51 of homonymy simultaneously.When the 4th gear 9 drives tooth bar 1 to move towards first gear 51 in front, right side, tooth bar 1 engages rear drive first gear 51 with the first gear 51 and rotates, and the first gear 51 drives support bar 55 to rise through pin 54, thus the supporting leg assembly 5 in front is shunk.When the 4th gear 9 drives tooth bar 1 to move towards rear, tooth bar 1 drives the first gear 51 to reversely rotate, and the first gear 51 drives support bar 55 to decline through pin 54, thus the supporting leg assembly 5 in front is extended.When the 4th gear 9 continues to drive tooth bar 1 to move towards rear, after tooth bar 1 engages with the first gear 51 of the supporting leg assembly 5 at rear, tooth bar 1 drives this first gear 51 to rotate, and the first gear 51 drives support bar 55 to rise through pin 54, thus the supporting leg assembly 5 at rear is shunk.When the 4th gear 9 drives tooth bar 1 to move toward the front, tooth bar 1 drives first gear 51 at rear to reversely rotate, and this first gear 51 drives support bar 55 to decline through pin 54, thus the supporting leg assembly 5 at rear is extended.

As shown in Figure 1, for the driving of the supporting leg assembly 5 of two on the left of wheelchair frame 4, can adopt and two of right side type of drive that supporting leg assembly 5 is identical, corresponding 7th gear 12 is meshed with the tooth bar 1 be arranged on the left of wheelchair frame 4, this tooth bar 1 is be arranged on the base plate 41 of wheelchair frame 4 in the horizontal direction, base plate 41 can be arranged equally and hold this tooth bar 1 and the guide rail (not shown) it being provided to guiding, the tooth bar 1 in left side parallels with the tooth bar 1 on right side and is in sustained height, 7th gear 12 keeps normal with this tooth bar 1 and engages, the 7th gear 12 rotated can drive the lower straight of the first gear 51 of former and later two the supporting leg assemblies 5 of this tooth bar 1 on the left of wheelchair frame 4 to move back and forth, and engage to drive it to rotate with the first gear 51, but tooth bar 1 can not engage with two the first gears 51 of homonymy simultaneously.When the 7th gear 12 drives tooth bar 1 to move towards first gear 51 in front, left side, tooth bar 1 engages rear drive first gear 51 with the first gear 51 and rotates, and the first gear 51 drives support bar 55 to rise through pin 54, thus the supporting leg assembly 5 in front is shunk.When the 7th gear 12 drives tooth bar 1 to move towards rear, tooth bar 1 drives the first gear 51 to reversely rotate, and the first gear 51 drives support bar 55 to decline through pin 54, thus the supporting leg assembly 5 in front is extended.When the 7th gear 12 continues to drive tooth bar 1 to move towards rear, after tooth bar 1 engages with the first gear 51 of the supporting leg assembly 5 at rear, tooth bar 1 drives this first gear 51 to rotate, and the first gear 51 drives support bar 55 to rise through pin 54, thus the supporting leg assembly 5 at rear is shunk.When the 7th gear 12 drives tooth bar 1 to move toward the front, tooth bar 1 drives first gear 51 at rear to reversely rotate, and this first gear 51 drives support bar 55 to decline through pin 54, thus the supporting leg assembly 5 at rear is extended.

Therefore when speeling stairway of wheelchair, for former and later two supporting leg assemblies 5 be positioned on the right side of wheelchair frame 4, by controlling the rotation direction of the first motor 2, former and later two supporting leg assemblies 5 of right side are made to carry out expanding-contracting action successively.For former and later two supporting leg assemblies 5 be positioned on the left of wheelchair frame 4, by controlling the rotation direction of the second motor 3, former and later two supporting leg assemblies 5 of left side are made to carry out expanding-contracting action successively.After the support bar 55 of supporting leg assembly 5 rises, the connecting rod 552 risen by driver drives moves forward, and makes connecting rod 552 drive pedal 56 and castor 57 to move on upper level step.And be drive two supporting leg assemblies 5 of front end successively to climb upper upper level step successively respectively by the first motor 2 and the second motor 3, then being reversed by the first motor 2 and the second motor 3 drives two supporting leg assemblies 5 of rear end successively to climb upper upper level step successively respectively, thus can realize stable speeling stairway work.

As preferably, as shown in Figure 2, the pedal 56 of supporting leg assembly 5 is connected with the connecting rod 552 of top by an adapter sleeve 511, adapter sleeve 511 is set on connecting rod 552, adapter sleeve 511 only can rotate on connecting rod 552, and both are coaxial, the rotation centerline of adapter sleeve 511 is positioned at vertical plane.Pedal 56 is connected with the lower end of adapter sleeve 511 by a joint 510, and the upper end of joint 510 is connected with adapter sleeve 511, and lower end is fixedly connected with pedal 56.

Castor 57 is connected with pedal 56 by horizontally disposed axle, because castor 57 will contact with step, the stability of wheelchair is affected in order to avoid castor 57 that rolling occurs when speeling stairway, wanting to control castor 57 makes it fix, and therefore can arrange the brake 59 being used for castor 57 being provided to brake force on pedal 56.As shown in Figure 3, as preferably, this brake 59 comprise be fixedly connected with pedal 56 bearing 591, to be located on bearing 591 and for two clamping limbs 592 being oppositely arranged with to be located on clamping limb 592 and electric magnet for making two clamping limbs 592 clamp.Same one end of two clamping limbs 592 is connected with bearing 591, two clamping limbs 592 can carry out folding, the axle of castor 57 passes between two clamping limbs 592, when two clamping limbs 592 close, can by the axis clamping of centre, make axle locking, thus the effect of braking can be played, avoid castor 57 to roll.Axle due to castor 57 is columniform component, the end that each clamping limb 592 is connected with bearing 591 has one section of curved portions, as preferably, the arc shaped inside face of this curved portions is provided with the friction plate 593 of arc, this friction plate 593 adopts quality of rubber materials to make, for be coupling tactile.After two clamping limbs 592 are closed, two friction plates 593 and axle surface contact, stiction is large, guarantees that countershaft clamping is more reliable, thus can improve braking effect.

Two clamping limbs 592 carry out folding by magnet control, second iron core 594 of electric magnet is arranged on the end away from bearing 591 on one of them clamping limb 592, second coil 596 is wrapped on the second iron core 594, second armature 595 of electric magnet is arranged on the end away from bearing 591 on another clamping limb 592, when the second coil 596 is energized, second iron core 594 applies magnetic force to the second armature 595, second armature 595 can drive clamping limb 592 to swing towards the clamping limb 592 at the second iron core 594 place, thus two clamping limbs 592 can be closed, the axle of clamping castor 57.When the second coil 596 no power, two clamping limbs 592 can unclamp.

Because two clamping limbs 592 are can folding, therefore two clamping limbs 592 can rotary setting on bearing 591, or only one of them clamping limb 592 is arranged to rotatable.Two clamping limbs 592 and bearing 591 also can adopt syndeton as shown in Figure 3, and two clamping limbs 592 have certain deflection with the link of bearing 591, make two clamping limbs 592 can do low-angle swing by relative seat 591.

Castor 57 is avoided to roll for adopting the brake 59 of said structure, improve stability during speeling stairway of wheelchair, joint 510 on pedal 56 can being arranged to the lower end of adapter sleeve 511 as being fixedly connected with, support bar 55 and stability when adapter sleeve 511, pedal 56 and roller supporting can be improved.

As variant embodiment, structure as shown in Figure 4 and Figure 5 also can be adopted to improve stability during speeling stairway of wheelchair.As shown in the figure, the structure that can rotate relative to adapter sleeve 511 is arranged to by pedal 56, to be arranged to the lower end of adapter sleeve 511, for being rotationally connected, pedal 56 to be spun upside down by the joint 510 on pedal 56.Because pedal 56 is the component of L-type, avoid castor 57 and step to come in contact by upset pedal 56, and directly contacted with step at different levels by pedal 56, because the contact area of pedal 56 is large, therefore stability is better.Concrete, this structure adopts the mode control pin pedal 56 of electric magnet absorption to overturn, tertiary coil 512 is wrapped on adapter sleeve 511,3rd armature 513 is arranged on pedal 56, the tertiary coil 512 of energising produces magnetic field, produces magnetic force, make the 3rd armature 513 have towards the trend of adapter sleeve 511 movement to the 3rd armature 513, thus drive pedals 56 to be turned into vertical state by ground three armature, the lower limb making the platen surface of pedal 56 form Absorbable organic halogens down to stand.The work that above-mentioned control pin pedal 56 overturns, can complete in support bar 55 uphill process, also can complete before beginning speeling stairway.

As preferably, supporting leg assembly 5 also comprises and to be located on the first support 53 and for the lockable mechanism 58 of locking first gear 51, this lockable mechanism 58 is that the first gear 51 is fixed when non rotating, this makes it possible to the vertical holding state making supporting leg assembly 5 keep stable, for wheelchair provides support when road traveling and speeling stairway.As shown in Figure 6 and Figure 7, this lockable mechanism 58 is vertical pole 42 or rear between vertical pole 43 and the first gear 51 before wheelchair frame 4, the lock pin 582 that lockable mechanism 58 comprises the spreadet spreadet wheel 581 be fixedly mounted on the first axle 52, is vertically located at the guide post 583 on the horizontal part of the first support 53 and is set on guide post 583, lock pin 582 is between spreadet spreadet wheel 581 and the horizontal part of the first support 53, and lock pin 582 can slide up and down on guide post 583.The lower end of lock pin 582 is to embed the flat tip in the teeth groove of spreadet spreadet wheel 581, when lock pin 582 embeds after in a teeth groove of spreadet spreadet wheel 581, spreadet spreadet wheel 581 can be made to fix, and first gear 51 position that the first axle 52 be fixedly connected with spreadet spreadet wheel 581 simultaneously also just can be made to fix and the first axle 52 is fixedly installed is fixed.

In order to realize unblock and the locking of lockable mechanism 58, lock pin 582 can be controlled move up and down by arranging electric magnet.As shown in Figure 7, lock pin 582 inside center is provided with the cavity holding electric magnet and guide post 583, the lower end of guide post 583 is slidably connected with lock pin 582 in the cavity of the upper end open insertion lock pin 582 of lock pin 582, electric magnet is made up of the first coil 585, first iron core 586 and the first armature 587, first armature 587 is fixed on the cavity bottom of lock pin 582, first iron core 586 is fixed on the lower end of guide post 583, relative with the first armature 587 position, the first coil 585 is wrapped on the first iron core 586.Because guide post 583 is fixedly mounted on the first support 53, when the first coil 585 is energized, first iron core 586 applies magnetic force to the first armature 587, first armature 587 can drive lock pin 582 to move up, thus the lower end of lock pin 582 can be made to depart from from the teeth groove of spreadet spreadet wheel 581, realize unlocking, now the first gear 51 can freely rotate under the driving of tooth bar 1.When the first coil 585 no power, lock pin 582 can fall after rise downwards under the driving of the first spring 584, until lower end is inserted in the teeth groove of spreadet spreadet wheel 581, realizes locking.As shown in the figure, first spring 584 is set on guide post 583, the upper end of the first spring 584 is against on the horizontal part of the first support 53, lower end is against on the upper surface of lock pin 582, first spring 584 is for applying downward thrust to lock pin 582, make lockable mechanism 58 can automatic locking, improve reliability.

As variant embodiment, for the first axle 52 of each supporting leg assembly 5 and the locking of the first gear 51, also the brake of structure as shown in Figure 3 can be adopted, be arranged on the first support 53, clamp the first axle 52 by magnet control two clamping limbs, equally also can realize the locking of the first axle 52 and the first gear 51.

As variant embodiment, as shown in Figure 9, originally the wheelchair of speeling stairway can also comprise the left and right sides that is located at wheelchair frame 4 and for providing the auxiliary support apparatus 6 of supplemental support, with improve further wheelchair travel or speeling stairway time stability.Concrete, this auxiliary support apparatus 6 comprises a pull bar 61, a gripper shoe 62, two the second supports 63, two auxiliary leg 64, two rocking arms 65, second spring 66 and a tray 67, pull bar 61 is vertically be arranged on the side plate 44 of wheelchair frame 4, horizontally disposed gripper shoe 62 is fixedly connected with a side lever of wheelchair frame 4 sidepiece, and extend towards the outside of wheelchair frame 4, second spring 66 is arranged on the end face of gripper shoe 62, tray 67 is arranged on the lower end of pull bar 61 and is positioned at the top of the second spring 66, the upper end of the second spring 66 is also connected with tray 67.Second spring 66 is for providing downward pulling force to tray 67, can move down reset.Two the second supports, 63, two auxiliary leg 64 and two rocking arms 65 respectively arrange one in front and back respectively, and second support 63 in front is connected with the front vertical pole 42 of wheelchair frame 4, and second support 63 at rear is connected with the rear vertical pole 43 of wheelchair frame 4.As shown in Figure 10, second support 63 comprises the column 631 and a support arm 632 that vertically arrange, support arm 632 is arranged on the side of column 631 and extends towards gripper shoe 62 place, support arm 632 is positioned at the below of rocking arm 65, column 631 is enclosed within auxiliary leg 64, the lower end of auxiliary leg 64 is stretched out from column 631 lower ending opening, the upper end of auxiliary leg 64 is stretched out from column 631 upper end open, and hinged with the end of rocking arm 65; rocking arm 65 position between the ends and the upper end thereof of support arm 632, the other end of rocking arm 65 contacts with tray 67 above tray 67.Former and later two rocking arms 65 of auxiliary support apparatus 6 are arranged to rotatable, by pulling pull bar 61, tray 67 is moved up, tray 67 thus two rocking arms 65 can be driven to swing, two rocking arms 65 can drive an auxiliary leg 64 to move down, until the lower end of auxiliary leg 64 contacts with ground or flooring respectively.

Wheelchair is provided with the auxiliary support apparatus 6 of said structure, situation when can travel according to wheelchair, is stretched out by the auxiliary leg 64 of control wheel chair frame 4 left and right sides as required, guarantee stability when wheelchair travels and safety.For the wheelchair needing speeling stairway, owing to having step, front and back second support 63 of auxiliary support apparatus 6 and the length of auxiliary leg 64 can be arranged to different, as being arranged to front short rear length, to adapt to the superior and the subordinate's step.

The balance and stability ability that the wheelchair tool of said structure is good and work efficiency.Good engagement between gear, adopt on a foot when going upstairs, by which foot of Motor Control front first can be topped bar, top bar after which foot of rear, which foot of left and right is first topped bar, and, its stability can be kept by supporting mechanism.According to circumstances can adjust step order and ensure that the balance and stability ability of wheelchair and required then riding comfort.Simultaneous wheels structure of chair is compact.Reliably deliver the various force and moments between vehicle body and wheel, meet parts quality want little while, ensure again enough intensity and life-span.

Orientation or the position relationship of the instructions such as upper and lower, the front, rear, left and right involved by foregoing are based on orientation shown in the drawings or position relationship, only this utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.

Below by reference to the accompanying drawings this utility model is exemplarily described.Obviously, this utility model specific implementation is not subject to the restrictions described above.As long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; Or without improvement, above-mentioned design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model.

Claims (10)

1. one kind can the wheelchair of speeling stairway, comprise wheelchair frame and running gear, it is characterized in that: described running gear comprises telescopic supporting leg assembly and for providing the motor of driving force to supporting leg assembly, supporting leg assembly is at least provided with four, supporting leg assembly comprises first gear of rotary setting on described wheelchair frame, the first support be located on wheelchair frame, is located at the pin on the first gear and is connected with the first bracket slide and is driven the support bar of moving linearly by pin, and support bar is provided with the first chute allowing pin insert.

2. according to claim 1 can the wheelchair of speeling stairway, it is characterized in that: described pin stretches out towards the side of described first gear, and the axis of pin parallels with the axis of the first gear, the direction of motion of described support bar and the axis perpendicular of pin, the length direction of described first chute and the direction of motion of support bar perpendicular.

3. according to claim 1 and 2 can the wheelchair of speeling stairway, it is characterized in that: described support bar comprises the sliding shoe that is connected with described first bracket slide and is slidably connected with sliding shoe and the connecting rod extended below sliding shoe, described first chute is located on sliding shoe, and sliding shoe is provided with for driving connecting rod along the driver of the direction moving linearly parallel with the first track length direction.

4. according to claim 3 can the wheelchair of speeling stairway, it is characterized in that: described motor rotates by being located at the first gear described in the rack drives on described wheelchair frame, and tooth bar engages with it in the below of the first gear.

5. according to claim 4 can the wheelchair of speeling stairway, it is characterized in that: described driver is the electric pushrod, cylinder or the hydraulic cylinder that are connected with described connecting rod.

6. according to claim 5 can the wheelchair of speeling stairway, it is characterized in that: described supporting leg assembly also comprises the pedal of rotary setting in described connecting rod lower end and the castor of rotary setting on pedal, the rotation centerline of pedal parallels with the length direction of connecting rod, and the rotation centerline of castor parallels with the axis of described pin.

7. according to claim 6 can the wheelchair of speeling stairway, it is characterized in that: described pedal is provided with the brake for providing brake force to described castor.

8. according to claim 7 can the wheelchair of speeling stairway, it is characterized in that: described supporting leg assembly also comprises and to be located on described first support and for the lockable mechanism of the first gear described in locking.

9. according to claim 8 can the wheelchair of speeling stairway, it is characterized in that: described supporting leg assembly is provided with four altogether, described motor and described tooth bar are respectively equipped with two, and each motor drive tooth bar successively with the first gears meshing of two supporting leg assemblies of the same side, provide driving force to two the supporting leg assemblies being positioned at the same side.

10. according to claim 9 can the wheelchair of speeling stairway, it is characterized in that: also comprise the sidepiece that is located at described wheelchair frame and for providing the auxiliary support apparatus of supplemental support.