CN2691548Y

CN2691548Y - Improved electric wheel chair

Info

Publication number: CN2691548Y
Application number: CN 200420004970
Authority: CN
Inventors: 蔡昆宏; 郭聪源; 林聪益; 张冠谅; 陈柏瑞
Original assignee: 蔡昆宏
Priority date: 2004-03-18
Filing date: 2004-03-18
Publication date: 2005-04-13
Anticipated expiration: 2014-03-18

Abstract

The utility model relates to an improved electric wheelchair, comprising a body, a driving set and a control system. The body is formed of a collapsible chair rack, the back end of which is provided with an interconnecting piece, and the driving set is provided with a positioning frame. The positioning frame is provided with a sheathing part which can be detachablly loaded at the body interconnecting part, and a driving wheel is arranged at the other end of the sheathing part. The driving wheel carries out advance, fall back and turning movement functions through the control system. So the driving set can be disassembled and assembled to the interconnecting piece of the body quickly through the matching of sheathing part and fixed component, which is beneficial to the outgoings to carry and use. Advance, fall back and turn functions can be achieved through single driving set, so the weight and bulk of the electric wheelchair can be diminished, and the traveling and turning of the wheelchair can be controlled accurately through the control system. The electric wheelchair can travel stably, and the wheelchair has a very high safety performance.

Description

Improved electric wheelchair

Technical field

This utility model is about a kind of improved electric wheelchair, refers to a kind ofly for the use of riding instead of walk of handicapped user especially, and has safety, lightly reaches quick disassembled folding electric wheelchair design.

Background technology

Present common Wheelchair structure, mainly provide higher old people of age, or the handicapped common people use of riding instead of walk, and can cooperate suitable medical procedure to carry out rehabilitation, and user also can be according to different demands, select manual wheelchair or electric wheelchair for use, wherein, electric wheelchair can provide lower limb inconvenience person comparatively comfortable and divide a word with a hyphen at the end of a line easily auxiliary, and its operation is simple and easy, and better climbing power and brake force also is provided when climb and fall uses, using provides splendid convenience of user and safety, is the main product on the market now.

Only known electric wheelchair is when reality is used, and the many shortcomings that but still have the following stated exist:

1, this known electric wheelchair mainly utilizes mechanical speed difference device or electronic differential control module to reach the function of turning, only the more weight that causes of the former component assembly lays particular stress on, and be not suitable for being applied on the electric wheelchair, though the latter has the lighter characteristic of weight, right this electronic type differential mechanism mainly utilizes fixed routine and parameter, it is poor to simulate inside and outside wheel speed required when turning, and can't look pavement behavior, gait of march and driving habits etc., it is poor accurately to calculate inside and outside wheel speed, break away or phenomenons such as tire towing so when turning, produce easily, electric wheelchair can't steadily be turned, and then produce and situation such as overturn and produce, generally speaking, its safety is not good.

2, the structure of this electric wheelchair is formed quite complexity, and its member is various, causes overall weight significantly to increase, so its dismounting is difficult for, can't be convenient to user and goes out to portably use, and can't be applicable to various place, so its convenience is also not good.

Summary of the invention

Therefore, for improving the shortcoming of aforementioned known electric wheelchair, this utility model is that a kind of " improved electric wheelchair " designed in research and development, uncommon design by this, advantages such as simple structure, easy disassembling are provided, portably using so that go out, and have and can stablize the effect of turning, is to be its main utility model purpose.

For reaching aforementioned utility model purpose, the technological means that this utility model used is to provide a kind of improved electric wheelchair, and it is made up of body, transmission group and control system, wherein:

Body has a folding chair frame that comprises handrail and handle, and the chair frame is provided with seat cushion and back pad, and its both sides are provided with relative drivewheel, and drivewheel the place ahead respectively is provided with auxiliary wheel relatively, and chair frame rear end is provided with connecting portion;

Transmission group has a locating rack, locating rack is provided with the socket part on the removable connecting portion that is loaded on body, socket part end in addition is provided with the wheel rim locating rack, wheel rim locating rack winding driving wheel, driving wheel drives wheelchair by default rim motor and steering motor mate gear group and advances, retreats and turn to mobilely, and locating rack is provided with the power set as the power resources of driving wheel;

Control system comprises the controller that is arranged on the body, and this controller cooperates relay, return controller and steering motor rotary angle transmitter, in order to the rim motor of control transmission group and the start opportunity of steering motor.

Combination by said structure, this transmission group can be by its socket part design, cooperate the fixation kit fast assembling-disassembling on the connecting portion of body, and body is collapsible to fold, and is beneficial to the user portable of going out and uses, and can reach forward-reverse and function such as turn to by single transmission group, use the weight and the volume that effectively alleviate electric wheelchair, and can utilize control system accurately to control advancing and turning to of wheelchair, make this electric wheelchair more steadily advance and to turn, so its safety is splendid.

Description of drawings

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 is the stereo appearance figure of this utility model transmission group.

Fig. 3 is a stereo appearance figure of the present utility model.

Fig. 4 is this utility model driving wheel schematic internal view.

Fig. 5 is the loop sketch map of this utility model control system.

Symbol description among the figure

10 bodies, 11 chair framves

111 handrails, 112 handles

12 seat cushions, 13 back pads

14 drivewheels, 15 connecting portions

152 perforation of 151 connection tubes

16 fixation kits, 17 auxiliary wheels

20 transmission groups, 21 locating racks

22 socket parts, 221 sleeving connecting rods

222 fixing holes, 23 wheel rim locating racks

24 driving wheels, 241 travelling gears

242 rim gear wheels, 243 pinions

25 power set 26 turn to the control group

261 first gears, 262 second gears

263 motors, 264 shock absorbers

30 control system, 31 controllers

32 relays, 33 return control groups

34 steering motor rotary angle transmitters

The specific embodiment

Is to understand really structural design of the present utility model, and other utility model purpose and effect, below enumerates a specific embodiment now, and conjunction with figs. is described in detail as follows:

Relevant concrete enforcement design of the present utility model sees also shown in Figure 1ly, is the improved electric wheelchair of this utility model, and it mainly includes body 10, transmission group 20 and control system 30, wherein:

Body 10 has a folding chair frame 11 that comprises handrail 111 and handle 112, chair frame 11 is provided with for user and takes seat cushion 12 on it, and one in order to support the back pad 13 at user back, these chair frame 11 both sides are provided with two relative drivewheels 14, drivewheel 14 the place aheads then respectively are provided with an auxiliary wheel 17 relatively, wherein, drivewheel 14 can be used for bearing user weight, and produce the auxiliary body 10 of frictional force with ground and move, 17 of auxiliary wheels can make body 10 move more stably, aforementioned chair frame 11 is provided with connecting portion 15 in the rear end in addition, in this preferred embodiment, this connecting portion 15 extends the connection tube 151 of two hollows respectively backwards from both sides, chair frame 11 rear end, and each connection tube 151 is provided with the perforation 152 that connects to inner, and its perforation 152 can be for as bolt, fixation kit such as latch or screw 16 wears wherein.

Please cooperate consult shown in Figure 2, transmission group 20 mainly has a locating rack 21, these locating rack 21 corresponding bodies 10 are provided with the socket part 22 of fast demountable on its connecting portion 15, in this preferred embodiment, this socket part 22 can cooperate connection tube 151 positions of aforementioned connecting portion 15, extend towards connection tube 151 places respectively and can insert winding sleeving connecting rod 221 wherein, and perforation 152 positions of corresponding connection tube 151 are provided with fixing hole 222 on each sleeving connecting rod 221, by this, the sleeving connecting rod 221 of locating rack 21 can be connected in the connection tube 151 of body 10, utilize fixation kit 16 perforation that stretched through 152 to be fixed in the fixing hole 222 again, can make this transmission group 20 be connected to body 10 rear ends smoothly as shown in Figure 3.

Again, locating rack 21 is provided with

power set

25, and 22 other ends are provided with wheel rim locating rack 23 towards the socket part, this wheel rim locating rack 23 can be for a driving wheel 24 windings on it, what be provided with on it that may command driving wheel 24 turns to turns to control group 26, in this preferred embodiment, this turns to control group 26 to be provided with intermeshing first in locating

rack

21 and 23 of wheel rim locating racks, two gears 261,262, motor 263 is set on locating rack 21 in addition, with so that second gear 262 rotate, intermeshing first gear 261 is also rotated thereupon, to reach the function that control driving wheel 24 turns to, in addition, can on wheel rim locating rack 26, cooperate driving wheel 24 that shock absorber 264 is set, in order to absorb the vibrations that produced when wheelchair moves, make the driving effect of this driving wheel 24 reach best, see also shown in Figure 4, driving wheel 24 inside are provided with by travelling gear 241, the planetary gearsets that rim gear wheel 242 and number pinion 243 are formed, by this, can be by utilizing power set 25 to drive the rim motor start that defaults on the driving wheel 24, and aforementioned motor 263 starts that turn to control group 26, in order to transmission planetary gearsets running start, make driving wheel 24 can produce the drive wheelchair and advance, the driving force that retreats and turn to.

Control system 30 can be arranged at body 10 side appropriate location (not shown), please cooperate consult shown in Figure 5, the detailed loop sketch map of this control system 30, it includes a cross rocker-type controller 31, can be located at wheelchair left side or right side according to the user actual demand, the rocking bar of this controller 31 can be pulled towards the plane 360 deg, when the rocking bar of controller 31 when a certain specific direction is pulled, can flow to rim motor or the steering motor that defaults on the aforementioned driving wheel 24 by relay 32 control electric currents, wheelchair can be moved towards the direction that controller 31 is pulled, and cooperate a return controller 33 to control the revert action of driving wheels 24, and the steering angle of this driving wheel 24 of a steering motor rotary angle transmitter 34 sensings, by this, user can utilize cross rocker-type controller 31, make it produce control signal and drive the rim motor or the steering motor start of driving wheel 24, so make wheelchair can produce before and after and turn to mobile comprehensive action.

When reality is used, when user is taken on this utility model wheelchair, move forward as desire control wheelchair, can pull cross rocker-type controller 31 forward, make the contact conducting in the controller 31 and produce electric current and flow to relay 32, the rim motor of the electric current that makes relay 32 output one particular polarity to the driving wheel 24, and then it is mobile to make driving wheel 24 advance, and when user is pulled controller 31 backward, can produce another polar electric current to rim motor, and then it is mobile to make driving wheel 24 retreat.

In addition, when user desire control wheelchair turns to, cross rocker-type controller 31 can be pulled towards the direction of desiring to turn to, make the contact conducting in the controller 31 and produce electric current and flow to relay 32, the electric current that makes relay 32 output one particular polarity is rim motor and the steering motor to the driving wheel 24 respectively, at this moment, driving wheel 24 can move forward or backward by rim motor, and default in steering motor on the CD-ROM drive motor also can make driving wheel 24 towards specific direction rotation start, mobile to finish turning to of wheelchair, when turning to, wheelchair finishes and controller 31 when pulling to original position, steering motor rotary angle transmitter 34 promptly carries out the sensing that turns to of driving wheel 24, and with signal to return controller 33, make return controller 33 can send signal to relay 32, carry out rectilinear direction and move in order to order about driving wheel 24 returns.

By said structure feature and compound mode, the characteristics of the improved electric wheelchair of the utility model are:

1, this transmission group 20 can be by its socket part 22 designs, and it is quick to be fixed assembly 16 Dismounting on the connecting portion 15 of body 10, so want when going out to carry, can be directly with transmission group 20 dismountings on body 10, and body 10 folded fold, be beneficial to the user and go out Portable is used, and applicable to different places, so its convenience is splendid.

2, the utility model is with the design of single transmission group 20, reaches forward-reverse and turns to Etc. function, must utilize the various differential mechanism of member to reach identical compared to the known electric wheelchair Function, the utility model can reach undoubtedly weight reduction and reduce the effect of volume.

3, utilize this control system 30 can accurately control advancing and turning to of wheelchair, so be not easy to Produce the phenomenons such as sideslip or tire towing during turning, this electric wheelchair can steadily be advanced and carry out Turn, the situation such as overturn and be unlikely to produce, so its security is also good.

By above explanation as can be known, the improved electric wheelchair of the utility model, have member simple, Be easy to the advantages such as dismounting, so that go out to portably use, and can stablize to advance and turn to accurate control To, it really is a quite excellent design.

Claims

1, a kind of improved electric wheelchair, it mainly includes body and transmission group, wherein:

Body has the chair frame, and chair frame both sides are provided with drivewheel and auxiliary wheel, and its rear end is provided with connecting portion;

Transmission group has locating rack, locating rack is provided with the removable socket part that is loaded on the body connecting portion, this locating rack is connected with the wheel rim locating rack of driving wheel, and what be provided with between locating rack and wheel rim locating rack that the may command driving wheel turns to turns to the control group, and is provided with power set as the power resources of driving wheel in locating rack.

2, improved electric wheelchair as claimed in claim 1, wherein, the connecting portion of the body hollow connection tube that extends outwardly out respectively from both sides, chair frame rear end, each connection tube is provided with perforation, the socket part of the transmission group pipe that is connected is provided with and can inserts winding sleeving connecting rod wherein, the punch position of the corresponding connection tube of each sleeving connecting rod is provided with fixing hole, uses to pass aforementioned perforation for fixation kit and be fixed in this fixing hole.

3, improved electric wheelchair as claimed in claim 1 or 2, wherein, body is provided with control system, control system comprises the controller that is arranged on the body, this controller cooperates relay, return controller and steering motor rotary angle transmitter, in order to the rim motor of control transmission group and the start opportunity of steering motor.

4, improved electric wheelchair as claimed in claim 3, wherein, turn to control to organize intermeshing first and second gear is set between locating rack and wheel rim locating rack, but the motor of this first and second gear of setting transmission on the locating rack, and cooperate driving wheel that shock absorber is set on this wheel rim locating rack.

5, improved electric wheelchair as claimed in claim 4, wherein, the chair frame is the folding chair frame that comprises handrail and handle.