CN201537187U - Wheelchair-assisting separated power assisting device - Google Patents

Abstract

The utility model discloses a wheelchair-assisting separated power assisting device. The power assisting device comprises a joint unit and a power assisting device which are arranged on the rear side of the wheelchair; a combination unit capable of combining with or separated from the joint unit is arranged on the power assisting device; the joint unit comprises combination plates arranged on two sides of the wheelchair; an upper embedding slot and a lower embedding slot are formed on each combination plate, and a retractable stopper is arranged at the opening part of each upper embedding slot; the combination unit comprises combination racks arranged on two sides of a seat frame, and upper embedding pieces and lower embedding pieces capable of being embedded in the upper embedding slots and the lower embedding slots on the joint unit are arranged on the combination racks; and when the combination unit and the joint unit are connected and combined, the lower embedding pieces are embedded in the slot bottom of the lower embedding slots, and then the upper embedding pieces are embedded in the upper embedding slots, and the stoppers on the joint unit stop the retraction of the upper embedding pieces. The utility model leads a user to easily complete the combination of the power assisting device and the wheelchair.

Description

The separate type power assist apparatus of wheel chair boosting

Technical field

This utility model relates to a kind of separate type power assist apparatus of wheel chair boosting.

Background technology

The action of general conventional manual wheelchair, be to move with the trailing wheel of its hand push runner chair voluntarily by the occupant, or promote at the rear side of wheelchair by other people, but in order to alleviate the occupant or to help pusher's physical load, can on wheelchair, install power assist apparatus additional, and this power assist apparatus mainly is to comprise that mounting upper end is provided with the control direct of travel and outside the rotating handgrip mostly, and be provided with the driving wheel that lands and turn the driving power unit of driving wheel, simultaneously for power assist apparatus can be combined with wheelchair, also can on its mounting, be provided with and the bonded combining unit of wheelchair, and be arranged on the diverse location place of wheelchair according to this power assist apparatus dress, and distinguish preceding power assist apparatus is arranged, three kinds of side power assist apparatus and back power assist apparatus, power assist apparatus and side power assist apparatus before but aforesaid, all be to be installed in the middle place, the place ahead of wheelchair or the side of wheelchair, its objective is and allow the occupant can be from line operate, but be located at the intermediary preceding power assist apparatus in wheelchair the place ahead, but can hamper on the occupant of the inconvenience of just taking action originally, following wheelchair, though and the side power assist apparatus can not hamper on the occupant, following wheelchair, but the control of its operating characteristics and turning is comparatively blunt and inconvenient, its combining unit is adopted semi-permanent fixed form mostly simultaneously, cause between wheelchair and the power assist apparatus combine or separate be difficult for, even it is simple and easy that tearing open between this power assist apparatus and the wheelchair organized, but on each, following wheelchair all must be torn the group power assist apparatus open, allows user cause very large puzzlement on the contrary.

In addition, if the occupant can't be when line operate, just must use the back power assist apparatus, operate the boosting wheelchair by the third party, its purpose is exactly to design for the physical load that alleviates the third party, but the combining unit between present back power assist apparatus itself and the wheelchair is not a complex structure, exactly in conjunction with or separate be difficult for or in conjunction with and the operation inconvenience of separating, cause the puzzlement of user and displeased use; Perhaps when this power assist apparatus breaks down temporarily, after must separating power assist apparatus, could allow wheelchair recover the function that manpower promotes, but the time of origin of power assist apparatus fault or power shortage, just in time be in the way of advancing the time, cause wheelchair can't continue to be pushed, if power assist apparatus is pulled down, though can allow wheelchair promote, heavy power assist apparatus is difficult to portable or disposal.

Certainly, the power assist apparatus that directly installs the permanent fixation formula on wheelchair additional is arranged also, just be as good as in fact with electric wheelchair, and the original meaning of Nonseparation power assist apparatus design.

Secondly; normally single wheel or two-wheel design arranged side by side of driving wheel on the present back power assist apparatus; it can't allow whole power assist apparatus stand at all; cause outside the puzzlement and inconvenience in the collection; more when power assist apparatus with after wheelchair combines; the position of its driving wheel usually can be under wheelchair rear axle center; and must contact fully really with ground; operation in the time of could allowing wheel chair boosting is more easy with turning; if but the center of gravity of occupant moves a little backward; and when crossing the center of rear axle; wheelchair just is very easy to the danger that generation is toppled over to layback; though also the Position Design of handlebar driving wheel no doubt makes it have the effect that prevents that wheelchair from toppling over backward in the side after a while at wheelchair rear axle center, operation when causing the boosting wheelchair and turning are comparatively difficult.

Summary of the invention

This utility model purpose is: the separate type power assist apparatus that a kind of wheel chair boosting is provided, the set set joint unit of combining unit and wheelchair rear side corresponding position on its power assist apparatus, make binding operation between power assist apparatus and the wheelchair more simple easily, allow user can finish combining between power assist apparatus and the wheelchair easily.

The technical solution of the utility model is: a kind of separate type power assist apparatus of wheel chair boosting, it comprises the joint unit and a power assist apparatus of the rear side that is arranged on wheelchair, this power assist apparatus is provided with and can combines with joint unit or isolating combining unit, wherein:

This joint unit is included in the board that is arranged on inboard, wheelchair both sides, the upper/lower terminal of board offers upper and lower embeded slot, it is horizontal slightly and have an opening wherein to go up embeded slot, following embeded slot is upward to be established and has an opening, and the described opening part of going up embeded slot is provided with telescopic block piece;

This power assist apparatus comprises:

One mounting which is provided with power supply unit;

One driver element, it is located at the mounting below, and has the driving wheel that can be turned;

One pushing hands unit is fixedly arranged on the mounting for gripping;

One combining unit comprises the joining rack that is arranged on the mounting both sides, and the upper/lower terminal of joining rack respectively is provided with upper and lower chimeric in the upper and lower embeded slot that can embed joint unit;

Combining unit and joint unit johning knot are fashionable, make the bottom land in the embeded slot under following chimeric the embedding after, make again in chimeric the embedding in the embeded slot, stop last chimeric withdrawing from by the block piece on the joint unit then.

The inboard upper/lower terminal of described joining rack is equipped with expansion bracket respectively, and expansion bracket wears and is fixed in the sleeve pipe set on the mounting, and telescopic outboard end is provided with the tight tread assembly that can tighten or loosen expansion bracket.Last chimeric outboard end of described joining rack upper end sets firmly a catch.

The block piece of described joint unit plugs in the hole seat that is fixed on medicated cap spare after passing the bar cover that a spring and is fixedly arranged on board upper end, and being provided with between the bottom surface in the end face of described bar cover and the hole seat can be mutually to the inclined-plane that closes.

Inboard, described wheelchair both sides respectively is installed with seat board, and the board pivot of each side is fixed on the pairing seat board, and is provided with two locating holes on each board, and wherein the pairing seat board of a locating hole is provided with scalable insertion or withdraws from the keeper of locating hole.Described keeper is affixed with a pull piece after passing a spring and being arranged on sleeve on the seat board, and described sleeve part plugs in the hole seat of pull piece, is provided with between the bottom surface of telescopic end face and hole seat to support the inclined-plane that closes mutually.

The mounting rear end of described power assist apparatus is established one and is had collapsible or setting and the auxiliary supporter of localized auxiliary wheel.The auxiliary wheel of described auxiliary supporter has two and articulate the both sides be fixed on mounting by wheel seat respectively, wear a rod member between described two wheel seats, pivot joint is fixed with one and steps on part on the described mounting, the other end of stepping on part is provided with and makes rod member be through at wherein L shaped guide groove, is provided with between described rod member and the mounting can make wheel seat fold into or erect the back and the spring of pulling is drawn in the location.The rod member of described auxiliary supporter and wheel seat wear the place of closing again pivot intrinsic drive part, described mounting rear end one side is provided with chute, is equipped with an axostylus axostyle in the chute, the described other end that drives part is arranged on the axostylus axostyle, the outboard end of described axostylus axostyle is provided with the side pedal.

Described pushing hands unit comprises that one is fixed in the lower carriage on the mounting, and one by a joint assembly and with the banded upper bracket assembly of lower carriage.Described joint assembly comprises a upper joint that is fixed together with joining rack, an and hypozygal that is fixed together with lower carriage, and pivot admittedly together between upper joint and the hypozygal, wear an alignment pin that is subjected to spring push on the joining rack at described upper joint place, the rear end of alignment pin and a pull piece articulate, described hypozygal is provided with locating hole corresponding to the alignment pin place, alignment pin can insert in the locating hole, make the upper bracket assembly can erect and not can by under roll over.Described upper bracket assembly comprises that one is linked on the joint assembly and the upper end is provided with the joining rack of locating hole, joining rack upper end be coated with one have handle, and several adjust the adjustment rack in holes, the upper bracket assembly also comprises and is the C type and middle fastener with alignment pin, alignment pin on this fastener can insert in arbitrary adjustment hole and the locating hole, and fastener is held on the adjustment rack.

This utility model advantage is:

1. the set set joint unit of combining unit and wheelchair rear side corresponding position on this utility model medium power auxiliary device, make binding operation between power assist apparatus and the wheelchair more simple easily, allow user can finish combining between power assist apparatus and the wheelchair easily.

2. this utility model is under power assist apparatus still is incorporated into situation on the wheelchair, can see through the commentaries on classics pendulum and location of board of the joint unit of wheelchair, allow the power assist apparatus can be liftoff, and then under the situation that power assist apparatus needn't be separated, can directly change and carry out wheelchair in the manpower mode.

3. the auxiliary wheel of auxiliary supporter of the present utility model, in the time of at the bottom of its folding is accommodated in mounting, can make things convenient for the binding between power assist apparatus and the wheelchair, when power wheel helps device to be incorporated on the wheelchair and after auxiliary wheel erects, more can be as the support of wheelchair anti-dumping, after this power assist apparatus was recessed out wheelchair, the auxiliary wheel after this setting can allow power assist apparatus be stood and be convenient to and move and collect simultaneously.

Description of drawings

Below in conjunction with drawings and Examples this utility model is further described:

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a decomposing schematic representation of the present utility model.

Fig. 3 is the partial exploded view of this utility model wheelchair place joint unit.

Fig. 4 is the cutaway view one of this utility model wheelchair place joint unit.

Fig. 5 is the cutaway view two of this utility model wheelchair place joint unit.

Fig. 6 is the swing sketch map of this utility model wheelchair place board.

Fig. 7 is the combination board perspective exploded view of this utility model joint unit.

Fig. 8 is the cutaway view of the board upper end structure of this utility model joint unit.

Fig. 9 is the action sketch map of the board upper end structure of this utility model joint unit.

Figure 10 is the schematic perspective view of this utility model power assist apparatus.

Figure 11 is the other direction sketch map of this utility model power assist apparatus.

Figure 12 is the unitary perspective exploded view of this utility model pushing hands.

Figure 13 is the cutaway view of this utility model pushing hands unit joint.

Figure 14 is the decomposing schematic representation one of this utility model driver element and auxiliary supporter.

Figure 15 is the decomposing schematic representation two of this utility model driver element and auxiliary supporter.

Figure 16 is the decomposing schematic representation three of this utility model driver element and auxiliary supporter.

Figure 17 is the side view at this utility model driver element and auxiliary supporter place.

Figure 18 is the sketch map before this utility model power assist apparatus is incorporated into wheelchair.

Figure 19 is the sketch map after this utility model power assist apparatus is incorporated into wheelchair.

Figure 20 is the power assist apparatus view after the load-carrying of this utility model wheelchair.

Figure 21 is the liftoff sketch map of the bonded power assist apparatus of this utility model and wheelchair.

Figure 22 is the sketch map after the auxiliary wheel of the bonded power assist apparatus of this utility model and wheelchair is erect.

Sketch map when Figure 23 is this utility model power assist apparatus independence.

Figure 24 is the operation chart of the unitary joint of this utility model pushing hands.

Figure 25 is the power assist apparatus sketch map after this utility model pushing hands unit folds.

Wherein: the A power assist apparatus; The B wheelchair;

1 mounting;

2 power supply units;

3 driver elements; 31 driving wheels; 32 motors; 33 bolsters; 34 supports;

4 pushing hands unit; 41 lower carriages; 42 upper bracket assemblies; 420 locating holes; 421 joining racks; 422 adjustment racks; 423 handles; 424 adjust the hole; 425 fasteners; 426 alignment pins; 43 joint assemblies; 431 upper joints; 432 hypozygals; 433 plates; 434 springs; 435 alignment pins; 436 sell directly to households; 437 sleeves; 438 locating holes;

5 combining units; 51 sleeve pipes; 52 tight tread assemblies; 53 expansion brackets; 54 joining racks; On 55 chimeric; 56 times chimeric; 57 catch;

6 auxiliary units; 61 auxiliary wheels; 62 wheel seats; 63 rod members; 64 step on part; 641 guide grooves; 65 springs; 66 springs; 67 side pedals; 671 axostylus axostyles; 68 drive part;

7 joint units; 70 springs; 71 seat boards; 72 boards; 720 locating holes; Embeded slot on 721; 722 times embeded slots; 73 sleeves; 731 end faces; 732 inclined-planes; 74 keepers; 75 springs; 76 plates; 760 hole seats; 761 bottom surfaces; 762 inclined-planes; 77 bar covers; 771 end faces; 772 inclined-planes; 78 block pieces; 79 medicated cap spares; 790 hole seats; 791 bottom surfaces; 792 inclined-planes.

The specific embodiment

Embodiment: as depicted in figs. 1 and 2, a kind of separate type power assist apparatus of wheel chair boosting, the joint unit 7 and the power assist apparatus A that comprise the rear side that is arranged on wheelchair B, this power assist apparatus A comprises a mounting 1, mounting 1 is provided with power supply unit 2, and the driver element 3 with driving wheel 31, be installed with on the described mounting 1 and can also be provided with on this mounting 1 and can combine or isolating combining unit 5 for the pushing hands unit 4 that helps pusher's holding operation with joint unit 7.Simultaneously, place, the rear side of mounting 1 below is provided with the auxiliary supporter 6 with the auxiliary wheel 61 that can fold and erect.

As Fig. 3, Fig. 4 and shown in Figure 5, the above-mentioned joint unit 7 of being located at wheelchair B rear side is included in inboard place, wheelchair B both sides and respectively is installed with seat board 71, the solid board 72 of pivot on the seat board 71 of each side, offer two locating holes 720 on the board 72, wherein set firmly a sleeve 73 on a locating hole 720 pairing seat boards 71, and establish positioning piece 74 behind a sheathed spring 75, insert again in the sleeve 73 and pass by the other end, affixed with a pull piece 76 again, establishing one on the described pull piece 76 can be for the hole seat 760 of sleeve 73 insertions, be respectively equipped with between 761 places, bottom surface of end face 731 places of sleeve 73 and the hole seat 760 of pull piece 76 and can support the inclined-plane 732 that closes mutually, 762, and then when pull piece 76 is pulled downwards and is rotated, two support the inclined-plane 732,762 that closes originally mutually can break away from, and produce axial thrust and pull piece 76 is moved laterally, allow the end face 731 of sleeve 73 support and close with the bottom surface 761 of pull piece 76, and then make keeper 74 withdraw from the locating hole 720, make board 72 can change pendulum; Otherwise when returning when pulling pull piece 76, keeper 74 promptly as shown in Figure 6, makes board 72 can do the rotation and the location of different angles under the pushing tow that is subjected to spring 75 and reset and insert locating hole 720.

As Fig. 7, Fig. 8 and shown in Figure 9, the outer side edges place, two ends up and down of above-mentioned board 72 offers upper and lower embeded slot 721,722 respectively, wherein goes up embeded slot 721 and is horizontal slightly and have opening, 722 of following embeded slots are to be upward setting and to make opening be downward slightly

The described opening part of going up embeded slot 721 is provided with telescopic block piece 78, block piece 78 plugs in the hole seat 790 that is fixed on medicated cap spare 79 after passing the bar cover 77 that a spring 70 and is fixedly arranged on board 72 upper ends, be provided with between the end face of described bar cover 77 and the bottom surface in the hole seat 790 and can support the inclined-plane 772,792 that closes mutually.So when medicated cap spare 79 rotates, two support the inclined-plane 772 that closes originally mutually, 792 can break away from and produce axial thrust and medicated cap spare 79 is moved up, and then make block piece 78 with on move and to break away from the opening part of last embeded slot 721, simultaneously when the end face 771 of bar cover 77 and the bottom surface 791 of hole seat 790 support close after, even with block piece 78 location and can not move down; Otherwise if rotating cap spare 79 and make between end face 771 and the bottom surface 791 disengaging a little, block piece 78 pushes and can move down in the elastic top of spring 70, makes the opening part of embeded slot 721 be subjected to stopping (as shown in Figure 6) of block piece 78 lower ends.

As Figure 10 and shown in Figure 11, this combining unit 5 comprises the sleeve pipe 51 that is fixedly arranged on mounting 1 top and below respectively, the place, two ends of each sleeve pipe 51 is provided with tight tread assembly 52 respectively, on, the two ends of setting of casing 51 respectively wear an expansion bracket 53, an affixed joining rack 54 between two expansion brackets, 53 ends of each side, on the both sides joining rack 54, the lateral surface place at following two ends is provided with chimeric 55 respectively and chimeric 56 down, on, chimeric 55 down, 56 can embed accordingly the inboard both sides of aforementioned wheelchair B board 72 set on, following embeded slot 721, in 722 (as shown in Figure 7), the outboard end of wherein going up chimeric 55 sets firmly a catch 57.The joining rack 54 of these both sides can be by the telescopic displacement of expansion bracket 53 in sleeve pipe 51, and then can adjust the width between two joining racks 54, and located by tight tread assembly 52, so power assist apparatus A can be used in combination with the wheelchair of most of different in width.

As Figure 12 and shown in Figure 13, above-mentioned pushing hands unit 4 comprises that one is fixed in the upper bracket assembly 42 that lower carriage 41 and on the mounting 1 is linked to lower carriage 41 upper ends, between lower carriage 41 and the upper bracket assembly 42 is to see through a joint assembly 43 to link.This upper bracket assembly 42 comprises that the upper end is provided with the joining rack 421 of locating hole 420, the upper end of joining rack 421 wears one to have handle 423, is provided with the adjustment rack 422 that several adjust holes 424 simultaneously, upper bracket assembly 42 also comprises and is the C type and middle fastener 425 with alignment pin 426, alignment pin 426 on this fastener 425 can be inserted in arbitrary adjustment hole 424 and the locating hole 420, fastener 425 is held on the adjustment rack 422, so the visual height that helps the pusher, and adjust adjustment rack 422 to suitable height.This joint assembly 43 comprises a upper joint 431 that is fixed together with joining rack 421 lower ends, and a hypozygal 432 that is fixed together with lower carriage 41 upper ends, and between upper joint 431 and the hypozygal 432 be pivot admittedly together.Set firmly a sleeve 437 on the joining rack 421 at described upper joint 431 places, one alignment pin 435 is after passing spring 434 and sleeve 437, by a direct selling 436 itself and a pull piece 433 are articulated, and then by the elastic top thrust amount of spring 434, the front end of alignment pin 435 is stretched out in outside the sleeve 437 a little, described hypozygal 432 is provided with locating hole 439 corresponding to alignment pin 435 places, and alignment pin 435 can insert in the locating hole 439, make upper bracket assembly 42 can erect and not can by under roll over.

Extremely shown in Figure 17 as Figure 14, power supply unit 2 set on the mounting 1 of above-mentioned power assist apparatus A is a set of cells, it provides electric power to the motor 32 on the driver element 3, and this driver element 3 has a support 34 that is provided with motor 32, the rear end pivot of support 34 is fixed in the rear side place, bottom of mounting 1, then be provided with bolster 33 between the front end of mounting 1 and support 34, and be provided with driving wheel 31, and then drive driving wheel 31 rotations by motor 32 at the place, front side of support 34.

The set auxiliary supporter 6 in mounting 1 rear side below of power assist apparatus A comprises two auxiliary wheels 61, pivot is fixed in the both sides of mounting 1 to two auxiliary wheels 61 by wheel seat 62 respectively, wear a rod member 63 between two wheel seats 62, the beneath pivot of mounting 1 solid one is stepped on part 64, the other end of stepping on part 64 is provided with a L shaped guide groove 641, rod member 63 is through in the guide groove 641, step between the pin fixed part of part 64 and the rod member 63 and hang a spring 65, its objective is when auxiliary wheel 61 is erect, the strength of pulling of drawing by spring 66, and rod member 63 is subjected to the block at L shaped guide groove 641 end ends, makes auxiliary wheel 61 erect the back and located; Otherwise, when the operator will step on part 64 downwards and toward interior when stepping on down and when folding into mounting 1 in, rod member 63 meetings be moved towards the other end along L shaped guide groove 641, and add and located after drawing of upper spring 66 pulled strength and made auxiliary wheel 61 invaginations.

The drives structure that allows auxiliary wheel 61 erect, be to establish a side pedal 67 in mounting 1 rear end one side, pedal 67 is provided with an axostylus axostyle 671, this axostylus axostyle 671 is arranged in the chute 66 set on the mounting 1, and again the Chuan Hechu of rod member 63 and wheel seat 62 again pivot solid drive part 68, making this other end that drives part 68 worn by axostylus axostyle 671 then closes, so when auxiliary wheel 61 is when being in the state that folds under the mounting 1, can be by the downward trampling of operator's offside pedal 67, allow axostylus axostyle 671 rotate and drive and drive part 68 downward pushing tows, and the lower end pushing wheel base 62 of pivot spare 68 is outwards swung, and then make auxiliary wheel 61 exhibitions pushed outwards and be erected in place, mounting 1 back lower place.

As Figure 18 and shown in Figure 19, when power assist apparatus A desires to be incorporated on the wheelchair B, auxiliary wheel 61 can be folded in mountings 1 beneath, allow the combining unit 5 of power assist apparatus A be able to successfully to combine with the joint unit 7 of wheelchair B, even during the opening part of the following embeded slot 722 of following chimeric 56 of joining rack 54 lower ends of the power assist apparatus A board 72 of aiming at wheelchair B rear side, power assist apparatus 1 can be pushed and make down chimeric 56 and slip into down the bottom land place of embeded slot 722 and form a pivot point; And then power assist apparatus A is swung towards wheelchair B according to this fulcrum, allow chimeric 55 block piece 78 back down and after slipping in the embeded slot 721 with board 72 upper ends, this block piece 78 can descend again immediately and withstand chimeric 55, thereby stop chimeric 55 withdraw from, and then allow whole power assist apparatus A combine with regard to complete and wheelchair 2, go up set bolster 33 by power assist apparatus A simultaneously, can allow wheelchair B a little upwards be lifted, its purpose as shown in figure 20, when wheelchair B has the people to take, can be by the weight of its health and make outside the trailing wheel of wheelchair B landed, and then more guarantee contacting between driving wheel 31 and the ground, and produce enough frictional force and drive wheelchair B and move, this bolster 33 also has concurrently and has buffered effect when allowing wheelchair B walking simultaneously.

As shown in figure 21, when the electric power on this power assist apparatus A can't drive wheelchair B or break down, user can be pulled (as Fig. 5 and shown in Figure 6) downwards with the pull piece 73 of wheelchair B two inboards at any time, can make the upper end of board 71 be rocked to behind the book office downwards and locate, so just can allow driving wheel 31 on the power assist apparatus A raise and break away from ground, and then allow boosting to change and adopt the manpower mode and promote wheelchair B.

As shown in figure 22, be incorporated on the wheelchair B at power assist apparatus A, and when wheelchair 7 stops to advance, auxiliary wheel 61 can be erected backward, make between auxiliary wheel 61 and the ground to be state of contact, allow ride in people on the wheelchair B, promptly its health makes to layback after its center of gravity surmounted the trailing wheel center of wheelchair B, this auxiliary wheel 61 just in time just can in time be supported on the ground, and then makes wheelchair B that the dangerous thing of reclining overturning backward can not take place.

As shown in figure 23, after this power assist apparatus A detaches wheelchair B, its auxiliary wheel 61 can be shown the back, location backward and land, and then allow whole power assist apparatus A can stand, and convenient moving, simultaneously as Figure 24 and shown in Figure 25, when pull piece 433 is depressed, can make alignment pin 435 withdraw from the locating hole 439 on the hypozygal 432, and then allow whole upper bracket assembly 42 foldings and other in mounting 1, so make the volume of whole power assist apparatus A, can dwindle significantly and be convenient to the Tibetan and put.

Claims (10)

1. the separate type power assist apparatus of a wheel chair boosting, it is characterized in that: the joint unit (7) and the power assist apparatus (A) that comprise the rear side that is arranged on wheelchair (B), this power assist apparatus (A) is provided with and can combines with joint unit (7) or isolating combining unit (5), wherein:

This joint unit (7) is included in the board (72) that is arranged on wheelchair (B) inboard, both sides, the upper/lower terminal of board (72) offers upper and lower embeded slot (721,722), it is horizontal slightly and have an opening wherein to go up embeded slot (721), following embeded slot (722) is upward to be established and has an opening, and the described opening part of going up embeded slot (721) is provided with telescopic block piece (78);

This power assist apparatus (A) comprising:

One mounting (1) which is provided with power supply unit (2);

One driver element (3), it is located at mounting (1) below, and has the driving wheel (31) that can be turned;

One pushing hands unit (4) is fixedly arranged on the mounting (1) for gripping;

One combining unit (5) comprises the joining rack (54) that is arranged on mounting (1) both sides, and the upper/lower terminal of joining rack (54) respectively is provided with upper and lower chimeric (55,56) in the upper and lower embeded slot (721,722) that can embed joint unit (7);

Combining unit (5) is fashionable with joint unit (7) johning knot, behind the bottom land under chimeric (56) embed under the order in the embeded slot (722), make again in chimeric (55) embedding in the embeded slot (721), stop withdrawing from of last chimeric (55) by the block piece (78) on the joint unit (7) then.

2. according to the separate type power assist apparatus of the described wheel chair boosting of claim 1, it is characterized in that: the inboard upper/lower terminal of described joining rack (54) is equipped with expansion bracket (53) respectively, expansion bracket (53) wears and is fixed in the upward set sleeve pipe (51) of mounting (1), and the outboard end of sleeve pipe (51) is provided with the tight tread assembly (52) that can tighten or loosen expansion bracket (53).

3. according to the separate type power assist apparatus of the described wheel chair boosting of claim 1, it is characterized in that: the block piece (78) of described joint unit (7) plugs in the hole seat (790) that is fixed on medicated cap spare (79) after passing the bar cover (77) that a spring (70) and is fixedly arranged on board (72) upper end, be provided with between the bottom surface in the end face of described bar cover (77) and the hole seat (790) and can support the inclined-plane (772,792) that closes mutually.

4. according to the separate type power assist apparatus of the described wheel chair boosting of claim 1, it is characterized in that: described wheelchair (B) inboard, both sides respectively is installed with seat board (71), the board of each side (72) pivot is fixed on the pairing seat board (71), and be provided with two locating holes (720) on each board (72), wherein the pairing seat board of a locating hole (720) (71) is provided with scalable insertion or withdraws from the keeper (74) of locating hole (720).

5. according to the separate type power assist apparatus of the described wheel chair boosting of claim 7, it is characterized in that: described keeper (74) pass a spring (75) and sleeve (73) back that is arranged on the seat board (71) affixed with a pull piece (76), described sleeve (73) part plugs in the hole seat (760) of pull piece (76), be provided with between the bottom surface of the end face of sleeve (73) and hole seat (760) and can support the inclined-plane (732,762) that closes mutually.

6. according to the separate type power assist apparatus of the described wheel chair boosting of claim 1, it is characterized in that: mounting (1) rear end of described power assist apparatus (A), if one has collapsible or setting and the auxiliary supporter (6) of localized auxiliary wheel (61), the auxiliary wheel (61) of described auxiliary supporter (6) has two and articulate the both sides be fixed on mounting (1) by wheel seat (62) respectively, wear a rod member (63) between described two wheel seats (62), the last pivot joint of described mounting (1) is fixed with one and steps on part (64), the other end of stepping on part (64) is provided with and makes rod member (63) be through at wherein L shaped guide groove (641), is provided with between described rod member (63) and the mounting (1) can make wheel seat (62) fold into or erect the back and the spring (66) of pulling is drawn in the location.

7. according to the separate type power assist apparatus of the described wheel chair boosting of claim 6, it is characterized in that: the rod member (63) of described auxiliary supporter (6) and wheel seat (62) wear the place of closing again pivot intrinsic drive part (68), described mounting (1) rear end one side is provided with chute (66), be equipped with an axostylus axostyle (671) in the chute (66), the described other end that drives part (68) is arranged on the axostylus axostyle (671), and the outboard end of described axostylus axostyle (671) is provided with side pedal (67).

8. according to the separate type power assist apparatus of the described wheel chair boosting of claim 1, it is characterized in that: described pushing hands unit (4) comprises that one is fixed in the lower carriage (41) on the mounting (1), and one by a joint assembly (43) and with the banded upper bracket assembly (42) of lower carriage (41).

9. according to the separate type power assist apparatus of the described wheel chair boosting of claim 8, it is characterized in that: described joint assembly (43) comprises a upper joint (431) that is fixed together with joining rack (421), an and hypozygal (432) that is fixed together with lower carriage (41), and pivot admittedly together between upper joint (431) and the hypozygal (432), wear an alignment pin (435) that is subjected to spring (434) pushing tow on the joining rack (421) that described upper joint (431) is located, the rear end of alignment pin (435) and a pull piece (433) articulate, described hypozygal (432) locates to be provided with locating hole (438) corresponding to alignment pin (435), alignment pin (435) can insert in the locating hole (438), make upper bracket assembly (42) can erect and not can by under roll over.

10. according to the separate type power assist apparatus of the described wheel chair boosting of claim 9, it is characterized in that: described upper bracket assembly (42) comprises that one is linked to that joint assembly (43) is gone up and the upper end is provided with the joining rack (421) of locating hole (420), joining rack (421) upper end is coated with one and has handle (423), and several adjust the adjustment rack (422) in hole (424), upper bracket assembly (42) also comprises and is the C type and the centre has the fastener (425) of alignment pin (426), alignment pin (426) on this fastener (425) can insert in arbitrary adjustment hole (424) and the locating hole (420), and fastener (425) is held on the adjustment rack (422).

Images