CN2536212Y

CN2536212Y - Stairs-climbing wheelchairs

Info

Publication number: CN2536212Y
Application number: CN 02205379
Authority: CN
Inventors: 王庆文; 吴新宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-21
Filing date: 2002-03-21
Publication date: 2003-02-19
Anticipated expiration: 2012-03-21

Abstract

Disclosed is a climbing wheelchair, which is used to serve as a vehicle for disable people when moving on level ground and upstairs and downstairs, the climbing wheelchair is on the foundation of a folding chair with armrests and footplate frames which substantially has the same structure as a common wheelchair, wherein a planet gear with multi angle-wheels is respectively arranged on the back lower portions of two side frames of the climbing wheelchair, the outer end surface of a angle-wheel of each planet gears are respectively fixedly connected with a driven gear co-axially arranged, on the front lower portions of the two side frames of the climbing wheelchair a floating rotatable gear with compression spring are respectively arranged, the upper ends of a pair of swinging rod type drivers are arranged on the outsides of the upper portion of the two side frames of the climbing wheelchair and are arranged with drive sprockets with cranks, the lower ends of the pair of swinging rod type drivers are respectively arranged with a driven sprocket, a driving gear, a positioning hook, and a locking bolt which are fixedly connected together. When the swinging rod type driver is in driving position, the wheelchair is driven to move by shaking the cranks, and when out of driving position, the wheelchair can be pulled upstairs and downstairs.

Description

Stairs-climbing wheelchairs

This utility model relates to a kind of manned walking-replacing tool, particularly a kind of Stairs-climbing wheelchairs for the invalids use.

At present can be a lot of for the wheelchair kind that invalids uses, but, make the abovestairs user that lives feel inconvenience deeply owing to all do not step on the building function.

The purpose of this utility model provides a kind of Stairs-climbing wheelchairs, and it also has the function of stepping on the building except the function with present wheelchair, thereby the abovestairs user of being convenient to more live uses.

The purpose of this utility model is to realize like this

Stairs-climbing wheelchairs comprises a tilting seat (2), a pair of planetary gear (1 5), a pair of floating type deflecting roller (7), a pair of oscillating rod type driver, pair of locking bolt (25), a pair of retainer (13), a pair of pilot pin (17), a pair of location hook (10) of lock hook (11), a pair of location axle sleeve (23) and a pair of wheel masking device (14) of having with a plurality of horn rings.Stairs-climbing wheelchairs be based on the essentially identical tilting seat of the armchair structure of common wheelchair, tilting seat can adopt the version of existing any wheelchair seat, it is mainly by a pair of seat bogie side frame that has handrail and footrest frame, seat folding mechanism, seat face and backrest are formed, the raising height of footrest frame and backrest angle can be made fixed or adjustable as required, and it is adjustable to be that the height of its backrest upper end headrest frame of the still high back of the body reclining seat of height of upper end handlebar (19) behind the fixed seat backrest is all made, and is locked by the height of a latch (29) with its setting of living.In the vertical rod of a pair of seat bogie side frame rear lower, by planet wheel spindle (22) planetary gear (15) with a plurality of horn rings is installed respectively, respectively have the outer face of a horn ring connecting firmly a coaxial mounted driven gear (12) respectively on two planetary gears, the driven gear axle head that is revealing in the two planetary wheel carriers outside respectively is installed with a location axle sleeve (23).A floating type deflecting roller (7) that can fluctuate according to the height on local ground under spring action is installed respectively in the preceding bottom of two seat bogie side frames.The upper end of a pair of oscillating rod type driver is installed on the fork pedestal (31) that is fixed in two seat bogie side frame upper outside by fork axle (30) respectively, have a plurality of fork axle installing holes in the middle part of fork pedestal horizontal direction, the installation site of fork axle front and back is as required adjusted; Suit fork (18) and drive sprocket (3) successively on the fork axle of oscillating rod type driver upper end, the crank (27) that chain cover (1) and handle can be folded down is installed successively in the outside of drive sprocket, on the opening pedestal that is positioned at oscillating rod type driver lower end fork, the driving gear (9) that connects firmly together is installed and by movable sprocket (8) by driving gear shaft (24); On the support at fork middle part, chain tension gear (4) is installed, by connector (26) chain cover (21) down is installed in the outside, fork middle and lower part; Back chain cover (20) is installed on the top of fork; Suit a location hook (10) that has lock hook (11) on the axle sleeve that the driving gear axle head that is exposed to the opening pedestal outside is overlapping; The locking bolt (25) that the bolt head is with the compression spring inwards at the through hole plug-in mounting that is positioned at fork lower ending opening pedestal top.The lower end of oscillating rod type driver can be positioned activation point or non-activation point as required, when being in activation point, being positioned at the driving gear (9) of oscillating rod type driver lower end is meshed with driven gear (12) on the planetary gear horn ring, at this moment should insert locating hole on the two planetary gear wheel carriers respectively with being positioned at pilot pin (17) in the two seat bogie side frame rear lower vertical rods, the locating shaft that location hook and lock hook are colluded in passive tooth wheel shaft outer end puts then, and will lock bolt and insert and to be fixed in the locating hole of the preceding bottom of seat bogie side frame keeper (5), shake the crank handle of wheelchair both sides this moment, can pass through drive sprocket, chain and transmission of power is given and the driving gear that is connected firmly by movable sprocket together by movable sprocket, by the master, the engagement of driven gear is given the planetary gear horn ring that connects firmly mutually with driven gear with transmission of power again, when shaking wheelchair both sides crank in the same way or shake a certain side crank separately, can realize advancing of wheelchair, retreat, motions such as left-hand bend or right-hand bend.When the oscillating rod type driver is in non-activation point, location hook and lock hook and location axle sleeve break off relations, pilot pin withdraws from the locating hole of wheel carrier in the planetary gear, is that lift to the front upper place at the center with the lower end of oscillating rod type driver with the fork axle, and will lock in the locating hole that bolt inserts wheelchair bogie side frame preceding bottom keeper (6), the headrest frame that can haul the wheel chair back telescopic handlebar in upper end or its backrest upper end of the high back of the body reclining seat this moment hauls the upper and lower building of wheelchair.When wheelchair is pushing away walking by other people, the oscillating rod type driver can be placed non-activation point, should insert a pair of pilot pin (17) that is installed in two seat bogie side frame rear lowers in the locating hole of wheel carrier in the planetary gear this moment.Retainer (13) and localizer (16) all are installed on the outer wheel carrier of two planetary gears, and rotating retainer is positioned at removing of the wheel carrier outside both can prevent lock pawl is pressed on the gear teeth of driven gear that wheelchair from sliding.When wheelchair does not need stop, retainer should be removed pushing locking in the localizer of making by spring leaf (16).To cover from behind under planetary gear relief angle wheel with a pair of wheel masking device (14) that wheelchair carries, and pull back wheelchair then, the horn ring that planetary gear can be had driven gear is adjusted to needed operating position.This Stairs-climbing wheelchairs is according to the seat of selected different structure, but but can have manned, the different functions such as body-building physical therapy, convenient nursing of can lying respectively.In addition can also be under the situation that the oscillating rod type driver is not installed, the special nursing people carrier that Stairs-climbing wheelchairs is become can step on the building.

Adopt the various Stairs-climbing wheelchairses of the version design production of present various wheelchair seat, except the function that has existing wheelchair respectively and had, also had the function of stepping on the building, thereby made things convenient for the abovestairs invalids of living to use, can also be used for the severe case's of hospital the transhipment downstairs of going up simultaneously.

Below in conjunction with embodiment of the present utility model and accompanying drawing, Stairs-climbing wheelchairs is described in detail.

Fig. 1 is the lateral plan of Stairs-climbing wheelchairs.

Fig. 2 is the front view of Stairs-climbing wheelchairs.

Fig. 3 is the structure chart of floating type deflecting roller.

The footrest frame of the tilting seat that adopts in this embodiment (2) and backrest all are fixed, it mainly is made up of a pair of seat bogie side frame, seat folding mechanism, seat face and the backrest etc. that have handrail and footrest frame, its structure and manufacture method and at present basic identical with the seat of kind shape, different is behind its backrest upper end handlebar (19) core bar is inserted in the backrest limit pipe of backrest both sides, the handlebar height is adjustable up and down, by the position of a latch (29) the locking handlebar of living.The plug front portion of a latch alive has a long nick along the latch axis direction, vertical near the position of breach bottom and pass breach an alignment pin is installed, one by a screw attachment in end and have vertical slotted hole on it near breach, and an end has the locking piece (28) of short gap, with latch past backrest limit pipe and fashionable the hole interpolation of core bar, the breach of locking piece end should be stuck on the alignment pin that is positioned at latch long nick bottom, make keeper and bolt rod in alignment, after the insertion keeper outwards pulled out and it is folded down and be the lockable handlebar and prevent that latch from coming off.

What planetary gear (15) adopted is the wheeled planetary gear of a pair of common triangle, different is their outsides that a horn ring all arranged with bolt connecting firmly respectively one with the coaxial mounted driven gear of this horn ring (12), fastening location axle sleeve in passive tooth wheel shaft outer end.

The difference of floating type deflecting roller (7) and other deflecting roller is to be installed on the core bar (39) on the wheel carrier top in the sleeve (34) successively suit and lower steel bowl (36), steel ball (37), upper steel bowl (38), compression spring (35), nylined bearing (33), socket cover (40) and core bar medicated cap (32) outward.Socket cover and the sleeve thread connection of passing through suitable for reading, the nylon sleeve of installing in the socket cover centre bore is located by axial bolt, expose the core bar upper end of socket cover and pass through thread connection with the outer medicated cap of core bar, and it is locking by the jackscrew of radially installing, the compression spring can be changed according to the body weight of wheelchair occupant, his upper end withstand on socket cover below, the lower end is pressed on the upper steel bowl, under the effect of external force and compression spring, upper steel bowl can slide up and down along the sleeve inner hole wall, thereby has realized fluctuating of deflecting roller.

In the oscillating rod type driver, leading, nylined bearing all be installed in by the axis hole of movable sprocket, driving gear, regulating wheel and fork upper end.Hinged handle is made up of core bar and outer sleeve on the crank, is positioned on the support of fork middle and lower part to have the slotted hole that is used to install the chain tension wheel shaft.

The bolt head of locking bolt (25) omits thick than tightening latch and has front fine and rear thick tapering, the afterbody of tightening latch is threaded, on tightening latch, put ring washer and compression spring successively, tightening latch is penetrated from the through hole on the opening pedestal top of fork lower end from inside to outside, and the nut that will have a draw ring is fastened on the tightening latch afterbody that exposes the opening pedestal.

Retainer (13) by one at two ends the little axle of side and all at one end have square hole remove and lock pawl form, little axle is horizontal to be contained on the outer wheel carrier of planetary gear, remove handle and lock pawl and be installed in the little axle two ends that are positioned at the wheel carrier outside and inboard respectively by square hole, and fastening by ring washer and screw.

Be processed with 2 to 3 fork locking bolt jacks on keeper (5), the position of jack is determined according to the diverse location that the fork axle is mounted on the fork pedestal.The lock hook (11) that is installed on the location hook (10) is made by elastic wire.

Pilot pin is bent by one tightening latch and a tightening latch keeper is formed, and its structure and operation principle are similar to the latch that door and window is used.

Claims

1. a Stairs-climbing wheelchairs comprises a common wheelchair tilting seat of being made up of a pair of seat bogie side frame, seat folding mechanism, seat face, backrest, handlebar, footrest frame height adjustment mechanism and the backrest angle governor motion etc. that have handrail and footrest frame; A pair of by fork, fork axle, drive sprocket, by movable sprocket, regulating wheel, driving gear shaft, driving gear, go up chain cover, the oscillating rod type driver formed of chain cover, back chain cover, crank, location hook, lock hook, locking bolt down; And a pair of floating type deflecting roller, a pair ofly have the planetary gear of a plurality of horn rings, a pair of location axle sleeve, a pair of retainer, a pair of localizer, a pair of pilot pin, two pairs of keepers and an a pair of wheel masking device.It is characterized in that Stairs-climbing wheelchairs be based on the essentially identical tilting seat of the armchair structure of common wheelchair, tilting seat can adopt the version of existing any wheelchair seat, the height of different is behind fixed seat backrest upper end handlebar or the height of its backrest upper end headrest frame of high back of the body reclining seat are all made adjustable, and by the height locking of a latch with its setting of living.In the vertical rod of a pair of seat bogie side frame rear lower, by planet wheel spindle a planetary gear with a plurality of horn rings is installed respectively, respectively have the outer face of a horn ring connecting firmly a coaxial mounted driven gear respectively on two planetary gears, the driven gear axle head that is revealing in the planetary wheel carrier outside is installed with a location axle sleeve.A floating type deflecting roller that can fluctuate according to the height on local ground under spring action respectively is installed in the preceding bottom of two seat bogie side frames.The upper end of a pair of oscillating rod type driver is installed on the fork pedestal that is fixed in two seat bogie side frame upper outside by the fork axle respectively, have a plurality of fork axle installing holes at the middle part of fork pedestal horizontal level, the installation site of fork axle front and back is as required adjusted; Suit fork and drive sprocket successively on the fork axle of oscillating rod type driver upper end, and the crank that chain cover and handle can be folded down is installed successively in the outside of drive sprocket; On the opening pedestal that is positioned at oscillating rod type driver lower end fork, the driving gear that connects firmly together is installed and by movable sprocket by driving gear shaft; Suit a location hook that has lock hook that is used to lock master, driven gear centre-to-centre spacing on the driving gear shaft that is exposed to the opening pedestal outside; The through hole plug-in mounting that is positioned at fork lower ending opening pedestal top be used to guarantee gears engaged precision and the localized bolt head of fork inwards, the tightening latch front portion is with the locking bolt of compression spring.A retainer and the localizer that is used to lock retainer of being made by flexure strip of removing handle and lock pawl that has that prevents the wheelchair slip respectively is installed on the outer wheel carrier of two planetary gears.Respectively be installed with one at the rear lower of two seat bogie side frames and be used for seat and planetary wheel carrier are fixed together, prevent the pilot pin that planetary gear rotates around planet wheel spindle.Also carrying a pair of wheel masking device in addition with car.When the oscillating rod type driver is in activation point, being positioned at the driving gear of oscillating rod type driver bottom is meshed with driven gear on the planetary gear horn ring, at this moment should insert locating hole on the two planetary gear wheel carriers respectively with being positioned at pilot pin in the two seat bogie side frame rear lower vertical rods, then location hook and lock hook are colluded at locating shaft and put, and will lock bolt and insert and to be fixed in the locating hole of the preceding bottom of seat bogie side frame keeper, shake crank and can pass through drive sprocket this moment, chain, by movable sprocket transmission of power is given and the driving gear that is connected firmly by movable sprocket together, and by main, the engagement of driven gear is given the planetary gear horn ring that connects firmly mutually with driven gear with transmission of power again, and then the driving wheelchair moves on the level land.When the oscillating rod type driver is in non-activation point, location hook and lock hook and location axle sleeve are broken off relations, location hook is withdrawed from the locating hole of wheel carrier in the planetary gear, is that lift to the front upper place at the center with oscillating rod type driver lower end with the fork axle, and will lock in the locating hole of the preceding bottom of bolt insertion wheelchair bogie side frame keeper, can haul the headrest frame of taking turns the chair back telescopic handlebar in upper end or its backrest upper end of the high back of the body reclining seat bogie side frame this moment, haul on the wheelchair and go downstairs.When wheelchair is pushing away walking by other people, the oscillating rod type driver can be placed non-activation point, should insert a pair of pilot pin that is installed in two seat bogie side frame rear lowers in the locating hole of bogie side frame in the planetary gear this moment, in case the wheelchair upset.This Stairs-climbing wheelchairs is according to the seat of selected different structure, but but can have manned, the different functions such as body-building physical therapy, convenient nursing of can lying respectively.

2. according to the described Stairs-climbing wheelchairs of claim 1, on the core bar that turns to wheel carrier top that it is characterized in that being installed with in the sleeve of floating type deflecting roller successively suit lower steel bowl, steel ball; Upper steel bowl; The outer medicated cap of compression spring, nylined bearing, overcoat cover and core bar, socket cover and sleeve are suitable for reading to link, in the socket cover centre bore nylined bearing is installed, the core bar upper end of exposing socket cover and the outer medicated cap of core bar be by thread connection, and locking by the jackscrew of radially installing, and top socket cover on the compression spring, presses down upper steel bowl, under the effect of external force and compression spring, upper steel bowl can slide up and down along the sleeve inner hole wall, thereby core bar and following deflecting roller thereof can be fluctuated, and can rotate again.

3. according to the described Stairs-climbing wheelchairs of claim 1, the bolt head that it is characterized in that locking bolt is slightly thicker and have a front fine and rear thick tapering than tightening latch, on tightening latch, overlapping ring washer and compression spring successively, tightening latch is penetrated from the through hole on the opening pedestal top of fork lower end from inside to outside, and will expose the nut that the tightening latch afterbody of opening pedestal has draw ring on fastening.

4. according to the described Stairs-climbing wheelchairs of claim 1, the plug front portion that it is characterized in that a latch alive has a long nick along the latch axis direction, vertical near the position of breach bottom and pass breach an alignment pin is installed, have a screw attachment one in the end near breach and have the locking piece that vertical slotted hole and an end have short gap on it, this screw crosses the locking piece slotted hole.The breach of locking piece end is stuck on the alignment pin that is positioned at latch long nick bottom, and locking piece is promptly in alignment with bolt rod, and the breach of locking piece is pulled away from alignment pin, locking piece can be folded down.

5. according to the described Stairs-climbing wheelchairs of claim 1, it is characterized in that pilot pin curvedly forms tightening latch and a tightening latch keeper by one, the latch that its structure and operation principle and door and window are used is basic identical.