CN2395715Y - Wheelchair back folding device - Google Patents

Abstract

The utility model relates to a wheel chair back folding device. Both sides of a backrest of the wheel chair are provided with lower backrest pipes, and an upper backrest pipe for pushing is assembled on the top of each of the lower backrest pipes, wherein, a group of back folding devices is sheathed between the lower backrest pipes and the upper backrest pipes, the back folding device comprises a lower back folding joint which is assembled on the lower backrest pipe, and an upper back folding joint which is assembled on the upper backrest pipe, and the middle part between the upper back folding joint and the lower back folding joint is in a bent shape. When the wheel chair is folded, the upper backrest pipes can be bent by the upper back folding joint to shorten the length of the wheel chair and to be conveniently collected and placed in a rear luggage case of an automobile.

Description

The Wheelchair back folding device

This utility model relates to a kind of wheelchair, refers to a kind of Wheelchair back folding device with folding back of the body device of folding especially.

For many health disabilities, the action inconvenient people such as sufferer that benumb or just ended cutter because of the caused health of cerebral hemorrhage say, need ride instead of walk with wheelchair, and existing more general wheelchair form is shown in Figure 5, wheelchair 7 is provided with the medicated cushion 71 of level and vertically leans against 72, be provided with support body 73 in medicated cushion 71 both sides, be provided with cross-like support bar 74 between two support bodys 73, in addition be provided with lower back tube 75 leaning against 72 both sides, plant respectively to assemble and lean against pipe 76 on one in the top of two lower back tubes 75, usual sufferer can be sitting on the medicated cushion 71, carry out by other people, again wheelchair 7 foldings are got up when arriving destination, the folding mode is support bar 74 gatherings with cross-like, make the support body 73 of being located at both sides, lower back tube 75 grades are drawn close to the centre and are formed flat, during if want the taxi, the wheelchair of again folding being finished 7 places luggage boot, but, since on lean against the pipe 76 and lower back tube 75 between can't bend,, the length after the folding quite accounts for the space of luggage boot so can't shortening, if car is the narrower compact car of width, also be not easy to insert.

Above-mentioned for existing wheelchair because on lean against pipe and can't bend so that take the space of more automobile luggage boot, even be difficult for inserting the defective in the compact car.

When main purpose of the present utility model provides a kind of folding wheelchair for improving above-mentioned defective by wheelchair go up folding back of the body joint will on lean against the pipe bending, and the Wheelchair back folding device of being convenient to collect.

This utility model major technology means, be to be to provide a kind of Wheelchair back folding device, the both sides that lean against of wheelchair are provided with the lower back tube, the top assembling of lower back tube leans against pipe on passing, wherein, infra leans against to manage to reach and leans against one group of folding back of the body of socket device between the pipe, this folding back of the body device comprises folding back of the body joint down, last folding back of the body joint, be located at the positioner on the folding back of the body joint, wherein, following folding back of the body joint is provided with a bell and spigot joint that is set in the lower back tube, and the upper semisection periphery of bell and spigot joint coats the sleeve pipe of a hollow, is provided with profile groove and spacing hole relatively at telescopic diameter two ends, and, establish the lug of a radial direction projection respectively in both sides, profile groove bottom;

The upper semisection of last folding back of the body joint is provided with and can be set on the bell and spigot joint that leans against in the pipe, lower semisection then is made as the bigger body of external diameter, other establishes an ear that is stretched on body periphery bottom, the width of this ear must be less than the two lug distances of rolling over back of the body joint down, and two lugs of ear and following folding back of the body joint are relative to be provided with perforation, be provided with in addition an end of ear on body, with respect to the spacing hole position of folding back of the body joint down radially establishing a through hole, and it is less to be located at the through hole aperture that ear should hold;

Positioner comprises an alignment pin, is set in the spring of alignment pin outer peripheral edges, reaches a spherical handle, and wherein, the contiguous wherein end ora terminalis of alignment pin is provided with annular retaining edge, and the other end then can be spirally connected with the sphere handle;

Comprise that also one can pass down the lug of folding back of the body joint and go up the clamping screw of the ear of folding back of the body joint.

Wheelchair back folding device as previously discussed, wherein, the bell and spigot joint end face of infra folding back of the body joint is concaved with a groove, can place a valve rubber in the groove.

By above-mentioned technological means, it is to lean against one group of folding back of the body of socket device between the pipe on the lower back tube reaches for this utility model, this folding back of the body device comprises the following folding back of the body joint that is assembled in the lower back tube, and be assembled in lean against pipe go up folding back of the body joint, and going up folding back of the body joint, to carry on the back between the joint with folding down be bent shape, after the folding wheelchair, again will on lean against pipe bending, to shorten the height of wheelchair, Convenient wheelchair places in the luggage boot of automobile, and more do not take up space,, also can place if during the automobile kart that to be width narrower.

Further specify architectural feature of the present utility model and purpose below in conjunction with accompanying drawing.

Fig. 1 is implemented on the outward appearance combination sketch map of wheelchair for this utility model.

Fig. 2 is an outward appearance decomposing schematic representation of the present utility model.

Fig. 3 is a combination generalized section in plane of the present utility model.

Action sketch map when Fig. 4 bends for this utility model.

Fig. 5 is the schematic appearance of existing wheelchair.

As shown in Figure 1, the applied wheelchair of this utility model is still the same with existing product, promptly be provided with medicated cushion 1 and lean against 2, lean against 2 both sides by lower back tube 3 and on lean against pipe 4 and support, but, in order to shorten the length after the wheelchair folding, the special infra of this utility model lean against pipe 3 with on lean against and establish one group of folding between the pipe 4 and carry on the back device 5, by the setting of this folding back of the body device 5, make to lean against that pipe 4 can bend and the length that shortens wheelchair.

Above-mentioned position and effect thereof of assembling for this utility model, its detailed construction is then please consulted Fig. 2 and shown in Figure 3 simultaneously, folding back of the body device 5 comprises folding back of the body joint 51 down, last folding back of the body joint 52, be located at the positioner 53 on the folding back of the body joint 52, wherein, following folding back of the body joint 51 is provided with a bell and spigot joint 511 that is set in the lower back tube 3, bell and spigot joint 511 end faces are arranged with a groove 5111, so as to assembling a valve rubber 54, coat the sleeve pipe 512 of a hollow in addition in the upper semisection periphery of bell and spigot joint 511, be provided with profile groove 513 and spacing hole 514 relatively at the diameter two ends of sleeve pipe 512, when it is assembled in lower back tube 3, profile groove 513 is to be provided with towards wheelchair rear as shown in Figure 1, and at both sides, the bottom projection lug 515 of profile groove 513, on two lugs 515, be provided with the perforation 516 of concentric respectively relatively, go up folding back of the body joint 52 so as to placing for a clamping screw 517 to be pivoted.

And the upper semisection of going up folding back of the body joint 52 is provided with and can be set in the bell and spigot joints 521 that lean against in the pipe 4, lower semisection then is made as the bigger body of external diameter 522, body 522 apical margins promptly form shoulder 523, make and lean against pipe 4 and be inserted in folding when carrying on the back the bell and spigot joint 521 of joint 52, can obtain to place restrictions on effect by shoulder 523, periphery in body 522 extends axially a spacer 524 downwards in addition, spacer 524 is stretched on this end of body 522 bottoms and radially is extended with ear 525, the width of ear 525 must be less than two lugs, 515 distances of rolling over back of the body joint 51 down, the ear 525 of last folding back of the body joint 52 is provided with perforation 526, in addition on body 522, from the periphery that is provided with spacer 524 these ends, radially establish a through hole 528 with respect to rolling over back of the body joint 51 spacing holes 514 positions down, so as to assembling positioner 53, and the aperture that is positioned at perforation 527 that is provided with on the spacer 524 and the spacing hole 514 of rolling over back of the body joint 51 down is less, and through hole 528 apertures on last folding back of the body joint 52 bodies 522 are then bigger.

Positioner 53 is spring 532, and the spherical handles 533 that comprise an alignment pin 531, are sheathed on alignment pin 531 outer peripheral edges, wherein, alignment pin 531 contiguous wherein ora terminalis are provided with annular retaining edge 534, and the other end then is provided with threaded portion 535, and spherical handle 533 then is provided with screw 536.During assembling, be that spring 532 is set in outside the alignment pin 531, together penetrate again in the through hole 528 of body 522, be located at the threaded portion 535 of alignment pin 531 ends and be piercing in spacer 524, establish assembling with screw 536 spiral shells of sphere handle 533 again, even spring 532 stays between the retaining edge 534 of spacer 524 and alignment pin 531.

Above-mentioned is detailed construction of the present utility model, its assembling situation is then please consulted Fig. 2 again, shown in 3, last folding back of the body joint 52 is carried on the back joint 51 respectively with bell and spigot joint 521 with following folding, 511 be socketed in lean against the pipe 4, lower back tube 3, during assembling, the body 522 of last folding back of the body joint 52 is inserted in down in the sleeve pipe 512 of folding back of the body joint 51, and the ear 525 that makes body 522 places between two lugs 515 of sleeve pipe 512, perforation 526 in the ear 525 just with two lugs 515 on perforation 516 be oppositely arranged, place for clamping screw 517, establish with nut 518 spiral shells at the other end again, make folding back of the body joint 52 and following folding back of the body joint 51 be the shape that is pivoted, at this moment, be arranged on folding back of the body joint 52 interior alignment pins 531 because be subjected to the effect of shoring of spring 532, its end is piercing in down outside the spacing hole 514 of folding back of the body joint 51, and forms the blocking effect, make to lean against pipe 4 and be assembled on the lower back tube 3 by last folding back of the body joint 52, at ordinary times, can promote to lean against pipe 4 and carry out wheelchair.

When wanting the folding wheelchair, shown in the notional line of Fig. 3, sphere handle 533 is pulled out outward together with alignment pin 531, even the free end retraction of alignment pin 531 and break away from the down spacing hole 514 of folding back of the body joint 51, again as shown in Figure 4 will on to lean against pipe 4 be that pivot down bends with clamping screw 517, can shorten the later wheelchair height of folding, in order to collecting and placing in the automobile luggage boot, reduce its shared space, when desiring to open the wheelchair use, again will on lean against pipe and 4 push back, make sleeve pipe 512 interior the getting final product that folding back of the body joint 52 is inserted in down folding back of the body joint 51 it on, and by valve rubber 54 formation buffering effects.

Claims (2)

1. Wheelchair back folding device, the both sides that lean against of wheelchair are provided with the lower back tube, the top assembling of lower back tube leans against pipe on passing, it is characterized in that: infra leans against to manage to reach and leans against one group of folding back of the body of socket device between the pipe, this folding back of the body device comprises folding back of the body joint down, last folding back of the body joint, be located at the positioner on the folding back of the body joint, wherein, following folding back of the body joint is provided with a bell and spigot joint that is set in the lower back tube, the upper semisection periphery of bell and spigot joint coats the sleeve pipe of a hollow, be provided with profile groove and spacing hole relatively at telescopic diameter two ends, and, establish the lug of a radial direction projection respectively in both sides, profile groove bottom;

The upper semisection of last folding back of the body joint is provided with and can be set on the bell and spigot joint that leans against in the pipe, lower semisection then is made as the bigger body of external diameter, other establishes an ear that is stretched on body periphery bottom, the width of this ear must be less than the two lug distances of rolling over back of the body joint down, and two lugs of ear and following folding back of the body joint are relative to be provided with perforation, be provided with in addition an end of ear on body, with respect to the spacing hole position of folding back of the body joint down radially establishing a through hole, and it is less to be located at the through hole aperture that ear should hold;

Positioner comprises an alignment pin, is set in the spring of alignment pin outer peripheral edges, reaches a spherical handle, and wherein, the contiguous wherein end ora terminalis of alignment pin is provided with annular retaining edge, and the other end then can be spirally connected with the sphere handle;

Comprise that also one can pass down the lug of folding back of the body joint and go up the clamping screw of the ear of folding back of the body joint.

2. Wheelchair back folding device according to claim 1 is characterized in that: the bell and spigot joint end face of infra folding back of the body joint is concaved with a groove, can place a valve rubber in the groove.

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