CN201404382Y

CN201404382Y - Handrail mechanism of wheel chair

Info

Publication number: CN201404382Y
Application number: CN2009203027903U
Authority: CN
Inventors: 王尔琪
Original assignee: CHANGZHOU ZHONGJIN MEDICAL Co Ltd
Current assignee: CHANGZHOU ZHONGJIN MEDICAL Co Ltd
Priority date: 2009-05-04
Filing date: 2009-05-04
Publication date: 2010-02-17
Anticipated expiration: 2019-05-04

Abstract

The utility model relates to a wheel chair device, in particular to a handrail mechanism capable of being opened and closed in the wheel chair device. The utility model aims to provide a handrail mechanism with simple structure and reliable operation of a wheel chair. The handrail mechanism of the wheel chair comprises a handrail pipe rotatably connected with a backrest of the wheel chair, a connecting block connected with a seat frame of the wheel chair and a locking component used for fixing or releasing the opposite position of the handrail pipe and the connecting block, wherein the lockingcomponent comprises a pipe plug connected with the handrail pipe, a switch elastically and rotatably connected with the pipe plug and an inserting rod fixed on the connecting block, the switch and the inserting rod are mutually fixed in a buckle manner. By adopting the fixed form that the locking part and the inserting rod are matched for locking and releasing, the wheel chair device is simple and reliable, convenient to operate, also facilitates control of the production cost while the service performance is ensured.

Description

Wheelchair armrest mechanism

Technical field

This utility model relates to a kind of wheelchair device, but the particularly armrest mechanism of folding in the wheelchair device.

Background technology

Wheelchair is specific crowd as its function setting of medical special equipment service object, to satisfy the needs that they ride instead of walk.Along with technological progress, living condition improve, to the also increase day by day of functional requirement of wheelchair, its each parts of inevitable requirement are updated, to adapt to the user's request that improves constantly.

In order to improve comfortableness, present wheelchair device more and more comes complicated, not only installed power facility additional, save manual fatigue, also strengthened the structure setting, made its easy to use and multifunction as far as possible, present wheelchair armrest mechanism all possesses to backrest direction rotating opening function, purpose is to make things convenient for the entourage to assist the wheelchair user in from the side, better embodies the design of wheelchair hommization.

The utility model content

But the purpose of this utility model is to provide a kind of wheelchair armrest mechanism of simple in structure, operation folding reliably.

The technical scheme that realizes this utility model purpose is:

A kind of wheelchair armrest mechanism, have handrail tube, contiguous block that is connected with the seats frame that is rotationally connected with the wheel chair back and the lock-in component that is used for fixing or discharges handrail tube and contiguous block relative position, the switch that above-mentioned lock-in component comprises the pipe close that is connected with handrail tube, be rotationally connected with pipe close elasticity and be fixed on inserted link on the contiguous block, switch and inserted link interfix by manner.

Above-mentioned pipe close has can stretch into the link stopper portion that carries out fixedly connected union joint in the handrail tube and switch is installed, and above-mentioned link stopper portion is provided with the locating hole that connects switch, and the lower end is provided with the gear groove that cooperates with inserted link.

Above-mentioned gear groove is made up of two " U " type grooves.

Above-mentioned switch has the press section and is used for preventing the locking part that inserted link breaks away from, the front end of above-mentioned locking part have sealed before with the inserted link CONTACT WITH FRICTION with convenient sealed inclined working, switch is rotatably connected on the locating hole place of pipe close by alignment pin, and adds jump ring between switch and the pipe close.

Above-mentioned inserted link has the active section that cooperates with switch and is used for and the fixed thread segment of contiguous block, and it is fixedly connected by nut that thread segment passes the contiguous block transverse notch.

Above-mentioned handrail tube below is provided with reinforcement, and handrail tube and reinforcement all are fixedly connected on the oval connecting plate at the backrest place, connecting plate be rotatably connected on take turns second contiguous block that chair back fixedlys connected on.

The utlity model has following characteristics: 1, adopt locking part, inserted link to cooperate fixed form sealed, that discharge simple and reliable, easy to operate, also help the control of production cost when guaranteeing serviceability; 2, this novel employing pipe close spare is installed switch block, dwindles the parts volume greatly, helps the compact design of wheelchair monnolithic case; 3, this novel pipe close lower end also has the gear groove and cooperates with inserted link with the switch locking part, has guaranteed that sealed back bar upward pressure is delivered to the seat vehicle frame smoothly.

Description of drawings

Fig. 1 is this utility model wheelchair armrest mechanism perspective view.

Fig. 2 is an A place enlarged diagram among Fig. 1.

Fig. 2-1 is a B place enlarged diagram among Fig. 2.

Fig. 3 is sealed group a solid blast structural representation among Fig. 1.

Fig. 4 is the perspective view of switch among Fig. 3.

Fig. 5 is the perspective view of pipe close among Fig. 3.

The specific embodiment

See Fig. 1, Fig. 2, Fig. 2-1 and Fig. 3, this is novel to have handrail tube 1, lock-in component and contiguous block 6, above-mentioned handrail tube below is provided with " L " type reinforcement 2, handrail tube and reinforcement all are fixedly connected on the oval connecting plate 9 at the backrest place, connecting plate be rotatably connected on take turns second contiguous block 10 that chair back fixedlys connected on, thereby handrail tube can be rotated around the wheel chair back.Lock-in component comprises pipe close 3, switch 4, inserted link 5 and jump ring 7, switch 4 is rotatably connected on the pipe close 3 by alignment pin 8, and being provided with jump ring 7 between switch and the pipe close, to make both be that elasticity is rotationally connected, and pipe close, switch and inserted link are worked in coordination and realized the locking function of handrail.

See Fig. 4 and Fig. 5, pipe close 3 has first half union joint 31 and Lower Half link stopper portion 32, union joint is cylindrical, be used for stretching in the handrail tube fixedly connected, be provided with perforate 31-1 in order to connect convenient union joint, the link stopper portion 32 of pipe close is made up of two parallel metal sheets, the middle part is provided with the locating hole 32-1 that switch 4 is installed, the lower end has gear groove 32-2, and the gear groove is made up of two sheet metals, and is " U " type, when handrail tube turns to contiguous block 6, behind the switch 4 sealed inserted links, the gear groove will contact with inserted link 5, and will be delivered to inserted link from the pressure of handrail.

See Fig. 3 and Fig. 4, switch 4 has the locking part 42 of press section 41 and lower end, switch is rotatably connected on the pipe close 3, alignment pin 8 passes locating hole 32-1, switch and the jump ring on link stopper portion 32 sheet metals of pipe close respectively, tighten up by nut again, like this switch just elasticity be rotatably connected on the pipe close, press section 41 with the hands push switch can make switch rotate, and the front end of switch locking part is provided with inclined working 43, before the sealed inserted link of switch, inserted link friction slip relatively on inclined working is earlier entering the locking part latched position at last.Inserted link 5 has active section 51 and thread segment 52, and the transverse notch that thread segment passes on the contiguous block 6 is fixed by nut, and active section 51 is also fixed simultaneously.

When the sealed handrail of needs, rotate handrail tube 1 near contiguous block 6 and the inserted link 5 on it, at first be the inclined working 43 of switch 4 and active section 51 contact and the relative slips of inserted link 5, enter the locking part 42 of switch fully up to the active section of inserted link, and simultaneously or afterwards the inserted link working end contacts with the gear groove 32-2 of pipe close 3, and inserted link bears the handrail pressure that the gear groove passes over, this moment is because the effect of switch jump ring, locking part is subjected to the elastic force effect can prevent that inserted link breaks away from from locking part, makes handrail fixed.To discharge armrest lock fashionable when needs, the press section 41 of artificial push switch 4, and locking part will outwards rotate, and lift the position that handrail can upwards turn to handrail tube to be needed.

Claims

1. wheelchair armrest mechanism, have handrail tube (1), contiguous block (6) that is connected with the seats frame that is rotationally connected with the wheel chair back and the lock-in component that is used for fixing or discharges handrail tube and contiguous block relative position, it is characterized in that: the switch (4) that above-mentioned lock-in component comprises the pipe close (3) that is connected with handrail tube (1), be rotationally connected with pipe close elasticity and be fixed on inserted link (5) on the contiguous block (6), switch and inserted link interfix by manner.

2. wheelchair armrest according to claim 1 mechanism, it is characterized in that: above-mentioned pipe close (3) has can stretch into the link stopper portion (32) that carries out fixedly connected union joint (31) in the handrail tube (1) and switch is installed, above-mentioned link stopper portion is provided with the locating hole (32-1) that connects switch, and the lower end is provided with the gear groove (32-2) that cooperates with inserted link (5).

3. according to the described wheelchair armrest of claim 2 mechanism, it is characterized in that: above-mentioned gear groove (32-2) is made up of two " U " type grooves.

4. according to claim 2 or 3 described wheelchair armrest mechanisms, it is characterized in that: above-mentioned switch (4) has press section (41) and is used for preventing the locking part (42) that inserted link (5) breaks away from, the front end of above-mentioned locking part have sealed before with the inserted link CONTACT WITH FRICTION with convenient sealed inclined working (43), switch (4) is rotatably connected on the locating hole place of pipe close by alignment pin (8), and adds jump ring (7) between switch and the pipe close.

5. according to the described wheelchair armrest of claim 4 mechanism, it is characterized in that: above-mentioned inserted link (5) has the active section (51) that cooperates with switch and is used for and the fixed thread segment of contiguous block (6) (52), and it is fixedly connected by nut that thread segment passes the contiguous block transverse notch.

6. according to the described wheelchair armrest of claim 5 mechanism, it is characterized in that: above-mentioned handrail tube (1) below is provided with reinforcement (2), handrail tube and reinforcement all are fixedly connected on the oval connecting plate (9) at the backrest place, connecting plate be rotatably connected on take turns second contiguous block (10) that chair back fixedlys connected on.