CN2263512Y

CN2263512Y - Wheelchair

Info

Publication number: CN2263512Y
Application number: CN 96200550
Authority: CN
Inventors: 施金水
Original assignee: JURIDICAL PERSON YIDIAN SOCIAL WELFARE FOUNDATION
Current assignee: JURIDICAL PERSON YIDIAN SOCIAL WELFARE FOUNDATION
Priority date: 1996-01-11
Filing date: 1996-01-11
Publication date: 1997-10-01
Anticipated expiration: 2006-01-11

Abstract

The utility model relates to a wheelchair, which is labor-saving and is operated and driven automatically only by one hand or both hands. The single point of the wheel chair is pivoted on the chair frame with the up-and-down swing and linking relation, and the main wheel of the wheel chair is provided with a bidirectional ratchet wheel set which can rotate back and forth linked with the main wheel. The ratchet wheel set controls two barrier strips by a triangular steering barrier block of each angular-cut circular, and then causes the barrier strip to control the ratchet wheel which rotates coaxially with the wheel shaft only to rotate by driven forward or reversely.

Description

Wheelchair

This utility model relates to a kind of wheelchair, refers to that especially a kind of may command advances or retreat, and the wheelchair that only needs one hand or both hands to drive from line operate.

The improvement of relevant this Wheelchair structure of past, " Wheelchair structure improvement " as Taiwan patent announcement the 245959th, wherein the wheel shaft B1 of this main wheel B all is provided with a single direction ratchet as shown in Figure 1, this folk prescription includes the ratchet E0 of ratchet E that is located on the wheel shaft B1 and the periphery that is positioned at wheel shaft B1 with one heart to ratchet, the wherein promotion of the flexible member E1 of ratchet E mat on it and normality is engaged in ratchet E0, make ratchet E0 interlock wheel shaft B1 and order about main wheel B and rotate forward in the time can making the progressive direction of wheelchair rotate, aforesaid ratchet E0 has a rocking handle E2 in the radial outward projection, but this rocking handle E2 is the aforesaid connector D of mat and connect into the connecting rod relation of interlock with aforesaid handrail tail end C1 then, therefore, when user with handrail C work on, in the following oscillating motion, just can be when pressing down handrail C at every turn interlock ratchet E0 order about main wheel B and rotate forward, and then reach and make the progressive purpose of wheelchair.

Right because this horizontal mode, its main wheel B be interlock and can't reach the effect that falls back forward only, therefore uses still very inconvenience.

The purpose of this utility model promptly is to provide a kind of one-hand operation, and the wheelchair that can move forward and backward, to make things convenient for the use of user.

The technical solution of the utility model is:

A kind of wheelchair, but the handrail of arm is shelved in the both sides that comprise the main wheel of the chair frame of taking for the patient, the both sides that are hubbed at the chair frame and independent rotation and be located at aforementioned chair frame for user;

Aforesaid handrail is to be articulated in chair frame both sides with the mode single-point that can do upper and lower swing, handrail is supported by the front forked frame of chair frame and stops and be near horizontal state when wherein being rocked to minimum point, the tail end of aforesaid handrail stretches out a pivoting point suitable length later at least again, have most again at tail end and connect perforation, in order to connect a connector; It is characterized in that:

All be provided with the ratchet group of a tool may command direction of rotation at the wheel shaft of aforesaid main wheel, this ratchet group is to comprise an enclosing cover, this enclosing cover be comprise one with the ratchet of wheel shaft fixing coaxial rotation, its opposite side then articulates with connector, it is in order to control two blend stops that this ratchet one side then has the block that turns to that can manually do to rotate, this two blend stop, be to establish fixing with two springlocks, its front end then is made as the corner cut with respect to ratchet, and make this turn to block one side and when wherein a blend stop is parallel, when just making the parallel blend stop of this block be the face contact with this, can make this parallel blend stop just contact in the roller seating space of ratchet, another blend stop then breaks away from ratchet fully, can be by turning to block when rotating, to pin down parallel blend stop by of the drive of this specific folk prescription of connector to rotation in specific folk prescription, this resistance of mat and be the walking of the mode of advancing, rotate with other direction and work as this connector, because this parallel blend stop will be subjected to the motionless active force of ratchet and pressuring spring, this spring makes it can not influence the action of ratchet fully, and can meet before next tooth of ratchet end again and rebound, perseveration like this can make wheelchair be the mode of advancing and walk, and can change the direct of travel of wheelchair after turning to block to rotate suitable angle again.

Described wheelchair is characterized in that: wherein this turns to block, is into the triangular shape of each angle circle of contact.

Described wheelchair is characterized in that: wherein this turns to block, is that its outside, axle center protruded out a vertical control stick in the past, and with the rotation in the 120 degree scopes about the manual mode work.

Described wheelchair is characterized in that: wherein this spring is fixed within the ratchet group enclosing cover on the wall in the screw lock mode.

Effect of the present utility model is:

The ratchet group may command wheelchair of the may command direction of rotation that wheelchair mat of the present utility model is set marches forward or falls back backward, for user is provided convenience.

For understanding structure of the present utility model, technological means and effect really, describe in detail as the back with following diagram respectively now:

Fig. 1: be the part sketch map of known Wheelchair structure.

Fig. 2 is a stereo appearance figure of the present utility model.

Fig. 3 is the sketch map of this utility model ratchet group.

Fig. 4 is a phantom view of the present utility model.

As shown in the figure, at first see also Fig. 2, wheelchair of the present utility model includes the chair frame of taking for the patient 1, but is hubbed at the both sides of chair frame 1 and the main wheel 2,2 ' of independent rotation, and the handrail 3,3 ' of arm is shelved in the both sides of being located at aforementioned chair frame 1 for user;

Aforesaid chair frame 1 is can make front-wheel 20,20 ' and main wheel 2,2 ' the chair frame that close mode folds before and after doing for a kind of, seat cushion 10 can be taken off when desiring to place and to prop up collapsible the finishing of bar 11 doublings again, also can turn down as for the callosity 12,12 ' that is positioned at front-wheel 20,20 ' top and pack up.

Aforesaid handrail 3,3 ' all is with on can doing, the single-point that concerns of lower swing motion (as shown in Figure 3) is articulated in chair frame 1 both sides, make handrail 3, but 3 ' the mat pivoting point 30,30 ' for doing swing as the seesaw in the center, handrail 3 when wherein being rocked to minimum point, 3 ' will be supported by crotch 13 before the chair frame 1 and stop and be near horizontal state, so that user is in the usefulness of shelving arm at ordinary times, aforesaid again handrail 3,3 ' tail end 31 need stretch out pivoting point 30 suitable length later at least, have most again at tail end 31 and connect perforation 310, in order to connect a connector 4.

All be provided with the ratchet group 5 of a tool may command direction of rotation at the wheel shaft 21 of aforesaid main wheel 2, as Fig. 3, shown in 4, this ratchet group 5 is to comprise an enclosing cover 51 and one and the ratchet 511 of wheel shaft 21 fixing coaxials rotations, its opposite side then articulates with connector 4, these ratchet 511 1 sides then have one can manually do 120 ° of rotations turn to block 512, it is into triangular shape and each angle circle of contact, be in order to control two blend stops 513,513 ', this two blend stop 513,513 ', be with two springs 514,514 ' is fixing, 5131 corner cuts that are made as with respect to ratchet 511 of its front end, and make this turn to block 512 one side and a blend stop 513 wherein, 513 ' when being parallel, when just making this block 512 and following blend stop 513 be face to contact, can make this time blend stop 513 just contact in the roller seating space of ratchet 511, last blend stop 513 ' then breaks away from ratchet 511 (not having any interference effect) fully, this moment is owing to turn to block 512 can pin down down the drive that blend stop 513 rotates clockwise by connector 4 when being the clockwise rotation, this resistance of mat and be the walking of the mode of falling back, rotate with counterclockwise and work as this connector 4, because following blend stop 513 will be subjected to ratchet 511 motionless active forces and pressuring spring 514, these spring 514 counteracting forces are less than ratchet 511 active forces, make it can not influence the action of ratchet fully, and can meet before ratchet 511 next tooth end again and rebound, perseveration like this can make wheelchair be the mode of falling back and walk, and after turning to block 512 to rotate 120 ° again, i.e. these block 512 tips situation down can change the direct of travel (be wheelchair become forward advance) of wheelchair.

Claims

1, a kind of wheelchair, but the handrail of arm is shelved in the both sides that comprise the main wheel of the chair frame of taking for the patient, the both sides that are hubbed at the chair frame and independent rotation and be located at aforementioned chair frame for user;

2, wheelchair according to claim 1, it is characterized in that: wherein this turns to block, is into the triangular shape of each angle circle of contact.

3, wheelchair according to claim 1 and 2, it is characterized in that: wherein this turns to block, is that its outside, axle center protruded out a vertical control stick in the past, and with the rotation in the 120 degree scopes about the manual mode work.

4, wheelchair according to claim 1 and 2 is characterized in that: wherein this spring is fixed within the ratchet group enclosing cover on the wall in the screw lock mode.