CN2489762Y - Portable folding expansion crutch - Google Patents

Abstract

The utility model relates to a portable foldable flex crutch, containing an axilla support and a supporting rod which is connected to the axilla support; wherein, the supporting rod is divided into a stand bearing tube, an intermediate spindle and a lower adjusting rod; a moveable gemel is positioned between the stand bearing tube and the intermediate spindle; the axilla support and the stand bearing tube can both flex to adjust the height of the crutch; and the stand bearing tube can be folded and conveniently carried, thus the utility model is a walk assistant tool and highly suitable for the handicapped.

Description

The portable folding telescopic crutch

This utility model belongs to people with disability's walk help instrument, particularly relates to the residual crutch of a kind of limb.

Residual the turning on the battle structure of tradition limb is generally the Y type, and it is fixing to adopt bolt to regulate between axil holder support and the support bar, and crutch length fibrous root determines that according to the height of user length just can not arbitrarily be stretched once fixing.Crutch adopts tubulose (especially the pipe aluminium alloy is more outstanding) material, three tube side-by-side bolting, and bolt and tubing contact area are little, and the walking vibrations make bolt loosening easily, and the pin-and-hole on the tubing increases, the shank of bolt wearing and tearing.Upper hand lining position is because of producing same effect, easily distortion, modification, fracture.Therefore user reflects that generally service life is not long, and the replacement cycle is short.The residual crutch of some external limb adopts the aluminium alloy rolled material, though the manufacturing process advanced person, there are defectives such as no deal, no intensity in advantage such as light and handy.Residual another weak point that turns battle of tradition limb is to carry inconvenience, as gets on or off the bus, and the placement of the whilst on tour crutch of driving often brings all worries to the disabled.

The purpose of this utility model provides a kind of easy adjusting height, the collapsible portable folding telescopic crutch that is convenient for carrying.

The technical scheme that realizes the foregoing invention purpose is: the portable folding telescopic crutch comprise axil holder support with the support bar that links to each other with axil holder support, support bar is divided into the supporting standpipe, middle knot bar and lower dolly bar, be fixed with hinges between supporting standpipe and the middle knot bar, have at least in supporting standpipe and the middle knot bar hinges stop bit parts are housed on one, tie in the bar during lower dolly bar is contained in, the middle knot rod tube mouth outside is equipped with and can be made the localized locking device of lower dolly bar, axil holder support comprises rack sleeve, parallel expansion link, axil holder and hands lining, parallel expansion link is contained in the rack sleeve, the axil holder is fixed on the parallel expansion link, the mouth of pipe outside of rack sleeve is equipped with and can be made the localized locking device of parallel expansion link, and the hands lining is fixed on the rack sleeve.

Hinges in the technique scheme between supporting standpipe and the middle knot bar can adopt " Serpentis type " movable joint, " Serpentis type " movable joint comprises, in, following three joints, the two ends of middle joint are hinged with an end of last joint and following joint respectively by articulated pin, on, the other end of following joint all has guide groove, be respectively upper rail and lower guide channel, following joint has an end of lower guide channel to be contained in the middle extension bar, guide groove pin on the middle extension bar passes lower guide channel and will descend joint to link to each other with middle extension bar, " Serpentis type " movable joint is placed in one and connects in the screwed pipe, an end that connects screwed pipe is fixed in the supporting standpipe, guide groove pin on it passes upper rail and will go up joint and connect screwed pipe and link to each other, connect on the outside of the screwed pipe other end screw thread is arranged, the outside, the middle extension bar end one-tenth one that links to each other is coniform with saving down, be with hinges stop bit parts lock jacket casing above, the inboard end of lock jacket casing is coniform can matching with middle extension bar end, have on the other end female thread can with the threads engaged that connects on the screwed pipe, " Serpentis type " is when movable joint is in stationary state, the lock jacket casing is spun on and connects on the screwed pipe and locking, middle extension bar is fixed to a firm integral body with the supporting standpipe, when needing to fold, the lock jacket casing can be outwarded winding, " Serpentis type " movable joint is pulled out (see figure 3) from connecting in the screwed pipe, can make crutch be folded into Fig. 4 state, an end that is arranged in extension bar on the lower dolly bar is built-in with the adjusting screw mandrel, regulate screw mandrel by rotation and can work to regulate crutch support bar height, regulate on the screw mandrel nut is arranged, screw nut, can prevent that screw mandrel is loosening, for preventing that user from making the lower dolly bar slippage that makes progress moving because of gravity, middle knot bar is provided with latch and can stops the adjusting screw mandrel, middle knot bar upper locking device is the lock jacket casing, but the lock jacket casing connects the pawl head with lower dolly bar silk mouth and cooperates the banding adjusting rod that itself and middle knot bar are tightened together, the effect that adjusting rod is served a dual purpose, another of lower dolly bar lands to hold has the stake of glue pier by bolting, the stake of glue pier is with Jiao Dun outward, can make crutch have the non-skid property that lands preferably; Locking device on the axil holder support medium-height trestle sleeve pipe is the lock jacket casing, one end of lock jacket casing endoporus is coniform, the other end have screw thread can with the threads engaged on the rack sleeve, the mouth of pipe of rack sleeve is the pulling claw head, when the lock jacket casing screws, the pulling claw head that the conical surface of the conical end of lock jacket casing endoporus will be oppressed the rack sleeve mouth of pipe makes it to compress and fixing parallel expansion link, unclamp the then parallel expansion link of lock jacket casing and can slide up and down freely, the distance of regulating arbitrarily between axil holder and the hands lining is user axillary fossa and hand-holding part length distance.

The utlity model has following characteristics:

1. the folding telescopic crutch is selected materials and is gone up main supporting and adopt high-quality thermoplastic rustless steel to decorate tubing, and tube wall is thicker, be not easy modification, and corrosion-resistant, oxidation, processing technology precision, compactness, firmly are elegant in appearance.

2. long service life, normal condition are used (non-artificial consciousness damage) can use more than 20 years (not comprise that accessory is changed in normal wear between the operating period).

3. travel away from home, be easy to carry.Especially the security of driving to have more.Be without fear of an attack from the rear.

4. the contraction that gets loose, folding or fixing can in the several seconds, finishing, convenient and swift.

5. range of accommodation is big, adapts to the adjusting height of different height persons (1.2m-1.9m) because of upper and lower expansion link, can be according to human body, and the adjusting in direct ratio of arm length=height.

6. lower dolly bar adopts built-in screw mandrel to regulate (playing dual function) but regulates the height regulated at will, simultaneously pole is slided because of gravity, and regulating crutch with tradition has distinct regulative mode.

7. modular construction adopts inner latent type purpose, reaches latent type effect perfection in one.

8. lock tube adopts (closely-pitched made in Great Britain) bolt collar, built-in pulling claw tension structure: adopted between the tube and tube and melt tight fit, convenient disassembly is convenient to change and is safeguarded.

Describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the support bar part-structure sketch map of portable folding telescopic crutch.

Fig. 2 is the axil holder holder part structural representation of portable folding telescopic crutch.

Fig. 3 is the structural representation when A part " Serpentis type " movable joint stretches among Fig. 1.

Sketch map when Fig. 4 is portable folding telescopic crutch folded state

The portable folding telescopic crutch comprise axil holder support with the support bar that links to each other with axil holder support.Fig. 1 and Fig. 2 are respectively the partial structurtes sketch maps of portable folding telescopic crutch.See Fig. 1, support bar is divided into supporting standpipe 23, middle knot bar 8 and lower dolly bar 5, be fixed with " Serpentis type " movable joint hinges between supporting standpipe 23 and the middle knot bar 8, " Serpentis type " movable joint comprises, in, following three joints 24,19,17, the two ends of middle joint 19 are by articulated pin 18,20 is hinged with an end of last joint 24 and following joint 17 respectively, on, under save 24,17 the other end all has guide groove, be respectively upper rail 22 and lower guide channel 16, saving 17 down has an end of lower guide channel 16 to be contained in the middle extension bar 8, in guide groove pin 15 on the extension bar 8 pass lower guide channel 16 and will descend joint 17 to link to each other with middle extension bar 8, " Serpentis type " movable joint is placed in one and connects in the screwed pipe 25, an end that connects screwed pipe 25 is fixed in the supporting standpipe 23, guide groove pin 21 on it passes upper rail 22 and will go up joint 24 and connect screwed pipe 25 and link to each other, connect on the outside of screwed pipe 25 other ends screw thread is arranged, become a conical boss 14 with near the outside saving 17 middle extension bar 8 ends that link to each other down, be with lock jacket casing 13 above, lock jacket casing 13 inboard ends are coniform can matching with near the conical boss 14 the middle extension bar end, have on the other end female thread can with the threads engaged that connects on the screwed pipe 25, " Serpentis type " is when movable joint is in stationary state, middle extension bar 8 ends are enclosed within and connect in the screwed pipe 25, lock jacket casing 13 is spun on and connects on the screwed pipe 25 and locking, middle extension bar 8 is fixed to a firm integral body with supporting standpipe 23, when needing to fold, lock jacket casing 13 can be outwarded winding, " Serpentis type " movable joint is pulled out (see figure 3) from connecting in the screwed pipe 25, can make crutch be folded into Fig. 4 state; Tie in the bar 8 during lower dolly bar 5 is contained in, an end internal fixation that is arranged in extension bar 8 on the lower dolly bar 5 has the screw mandrel of adjusting screwed pipe 9, regulating screw mandrel 11 is spun in the adjusting screw mandrel screwed pipe 9, regulate screw mandrel 11 by rotation and can work to regulate crutch support bar height, regulate on the screw mandrel 11 nut 10 is arranged, screw nut 10, can prevent that screw mandrel 11 is loosening, upwards slippage is moving because of gravity makes lower dolly bar 5 in order to prevent user, middle knot bar 8 is provided with latch 12 can stop adjusting screw mandrel 11, locking device on the middle knot bar 8 is lock jacket casing 6, but lock jacket casing 6 cooperates banding adjusting rod 5 that itself and middle knot bar 8 are tightened together with lower dolly bar silk mouth pulling claw head 7, the effect that adjusting rod 5 is served a dual purpose, another of lower dolly bar 5 lands and holds internal fixation that screwed pipe 3 is arranged, be fixed with glue pier stake 4 by the bolt 2 that revolves thereon, be with glue pier 1 outside the glue pier stake 4, can make crutch have the non-skid property that lands preferably; See Fig. 2, axil holder support comprises rack sleeve 27, parallel expansion link 30, capable rod 31 and the hands lining 26 moulded of axil holder arc, parallel expansion link 30 is contained in the rack sleeve 27, axil holder arc is capable to be moulded rod 31 and is fixed on the parallel expansion link 30 by coupling bar 32, the mouth of pipe outside of rack sleeve 27 is equipped with and can be made parallel expansion link 30 localized lock jacket casing 28 locking devices, one end of lock jacket casing endoporus is coniform, the other end have screw thread can with the threads engaged on the rack sleeve 27, the mouth of pipe of rack sleeve 27 is a pulling claw head 29, when lock jacket casing 28 screws, the pulling claw head 29 that the conical surface of the conical end of lock jacket casing 28 endoporus will be oppressed the rack sleeve mouth of pipe makes it to compress and fixing parallel expansion link 30, unclamping 28 parallel expansion links 30 of lock jacket casing can slide up and down freely, the distance of regulating arbitrarily between axil holder 31 and the hands lining 26 is user axillary fossa and hand-holding part length distance, and hands lining 26 is fixed on the rack sleeve 27.

Claims (2)

1, a kind of portable folding telescopic crutch, comprise axil holder support with the support bar that links to each other with axil holder support, it is characterized in that support bar is divided into supporting standpipe (23), middle knot bar (8) and lower dolly bar (5), be fixed with hinges between supporting standpipe (23) and the middle knot bar (8), have at least in supporting standpipe (23) and the middle knot bar (8) hinges stop bit parts (13) are housed on one, tie in the bar (8) during lower dolly bar (5) is contained in, middle knot bar (8) mouth of pipe outside is equipped with and can be made the localized locking device of lower dolly bar (6), axil holder support comprises rack sleeve (27), parallel expansion link (30), axil holder (31) and hands lining (26), parallel expansion link (30) is contained in the rack sleeve (27), axil holder (31) is fixed on the parallel expansion link (30), the mouth of pipe outside of rack sleeve (27) is equipped with and can be made the localized locking device of parallel expansion link (30) (28), and hands lining (26) is fixed on the rack sleeve (27).

2, portable folding telescopic crutch according to claim 1, the hinges that it is characterized in that supporting between standpipe (23) and the middle knot bar (8) can adopt " Serpentis type " movable joint, " Serpentis type " movable joint comprises, in, following three joints (24,19,17), the two ends of middle joint (19) are by articulated pin (18,20) hinged with an end of last joint (24) and following joint (17) respectively, on, the other end of following joint all has guide groove, be respectively upper rail (22) and lower guide channel (16), following joint (17) has an end of lower guide channel (16) to be contained in the middle extension bar (8), guide groove pin (15) on the middle extension bar (8) passes lower guide channel (16) and will descend joint (17) to link to each other with middle extension bar (8), " Serpentis type " movable joint is placed in one and connects in the screwed pipe (25), an end that connects screwed pipe (25) is fixed in the supporting standpipe (23), guide groove pin (21) on it passes upper rail (22) and will go up joint (24) and connect screwed pipe (25) and link to each other, connect on the outside of screwed pipe (25) other end screw thread is arranged, the outside, middle extension bar (8) end that links to each other with following joint (17) becomes a circular cone (14) shape, be with hinges stop bit parts lock jacket casing (13) above, the inboard end of lock jacket casing (13) is coniform can matching with middle extension bar (8) end, have on the other end female thread can with the threads engaged that connects on the screwed pipe (25), an end internal fixation that is arranged in extension bar (8) on the lower dolly bar (5) has adjusting screw mandrel (11), regulate on the screw mandrel (11) nut (10) is arranged, middle knot bar (8) is provided with latch (12) can stop adjusting screw mandrel (11), middle knot bar (8) upper locking device is lock jacket casing (6), another of lower dolly bar (5) lands to hold and is fixed with glue pier stake (4) by bolt (2), the outer Jiao Dun (1) that is with of glue pier stake (4); Locking device on the axil holder support medium-height trestle sleeve pipe (27) is lock jacket casing (28), and an end of lock jacket casing (28) endoporus is coniform, the other end have screw thread can with the threads engaged on the rack sleeve (27), the mouth of pipe of rack sleeve (27) is pulling claw head (29).