CN101816604B - Wheelchair device with assistant function - Google Patents

Abstract

The invention relates to a wheelchair device with a assistant function, which comprises a side frame group, a front cross rod and a wheel group, wherein the side frame group comprises two side frames, a front cross rod is pivoted between the two side frames, and the side frames are respectively provided with the wheel group; two leg frame tubes respectively arranged in the sleeve, wherein the leg frame tubes are provided with a tooth section; a seat frame group, which comprises two seat frames arranged above the side frame group, wherein the front end of the seat frame group is pivoted with the side frame group, and a rear cross bar is pivoted between the two seat frames; an extending mechanism, both ends of which are respectively connected with the front cross bar and the rear cross bar in a transmission way; at least one driving gear set arranged at the front end of the side frame and linked by the front cross bar; and at least one transmission gear pivoted to the front end of the side frame. The invention can lead the two stand pipes to descend when the two lifting arms are lifted, so that the acting force of the stand pipes is not easy to disperse in the driving process, and the two stand pipes can descend more smoothly, thereby further increasing the safety of the wheelchair device with the assistant function.

Description

Wheelchair devices with assistive features

technical field

The present invention relates to a wheelchair structure, in particular to a wheelchair device with an assisting function that can smoothly, conveniently and safely assist an occupant to stand.

Background technique

的危险发生。再者，长期乘坐轮椅者因下半身长期缺少运动或负重，往往时间一久将会产生下半身的萎缩，甚至发生骨质酥松现象，极易造成骨折，故乘坐轮椅者亦需适时站立，利用体重使下半身(尤其腿部)产生负重作用，以避免或减缓骨质酥松，因此如何方便且安全地让乘坐轮椅者可经常自行站立，也是此类辅立式轮椅的设计重点。Wheelchairs are the main means of transportation for people with disabilities, serious diseases or injuries. Even so, when users with serious diseases or inconvenient conditions want to stand, they still need assistance from others. For wheelchair users who take care of these major diseases, the most important considerations are safety issues and the moment when the wheelchair is taken off and on. Since the caregiver has to support the weight of the wheelchair user and pay attention to the positioning of the wheelchair, it is quite inconvenient and strenuous, and the wheelchair user may fall or fall if he is not careful. take off and land with great care to prevent further

danger occurs. Furthermore, due to the long-term lack of exercise or weight bearing on the lower body of the wheelchair users, the lower body will often atrophy over time, and even osteoporosis will occur, which can easily lead to fractures. (especially the legs) produce a weight-bearing effect to avoid or slow down osteoporosis, so how to conveniently and safely allow wheelchair users to stand on their own is also the focus of the design of this type of auxiliary upright wheelchair.

And in order to solve the patient's (wheelchair user) needs other people's supporting force and the wheelchair positioning problem of rising and falling, therefore in the auxiliary vertical wheelchair structure of Chinese Taiwan Patent Certificate No. M249633, this patent is to be provided with wheel body on two side frames, two sides A front cross bar is pivotally connected between the side frames at an appropriate position; and the front frame is connected to the side frames to accommodate a tooth bar, and the tooth bar is provided with a tooth end, and the two upper arm mechanisms are arranged above the side frame, and the upper arm mechanism There is a rear cross bar connected between them; an action mechanism is tooth-connected to the gear bar. The moving device includes a solid air rod, that is, the transmission device. The transmission device includes a first gear, a chain, a second gear and a third gear. The first gear is arranged on the end of the front cross bar, and the second gear and the third gear set on a shaft. The first gear is connected with the second gear by a chain, and then drives the third gear, and the third gear meshes with the tooth end of the gear rod; or the first gear directly drives the second gear to link the third gear , or the idler gear is geared by the first gear and then the third gear is geared by the idler gear.

However, by driving the chain through the first gear to drive the second gear, the force will be distributed between the chains, and when the first gear drives the chain, or when the chain drives the second gear, it will be due to the force of the chain. The gap is that when the first gear rotates, the second gear has not been driven, so that when the front cross bar operates, the gear bar has not been driven, so there will be a situation of asynchronous driving. Therefore, when the auxiliary upright wheelchair structure is stored in the upright state, the tooth bar will be delayed in retraction, and the entire upright wheelchair will shake a bit, which will cause shaking for the wheelchair user. Therefore, it is a big test for the safety of the wheelchair in use.

Furthermore, the chain is used to drive the wheelchair. After the wheelchair has been used for a long time, the chain will be worn or even broken, so the chain must be replaced. If the chain breaks when the wheelchair is in use, the gear bar will not be able to be retracted smoothly. If the chain breaks during the standing process of the wheelchair, the gear rod will not be able to touch the ground, and the wheelchair will easily slip during the process of standing upright or storing, which is a big hidden danger to the safety of wheelchair users . In addition, in this prior art, the first gear directly drives the second gear to drive the third gear, or the first gear drives an idler gear and then drives the third gear through the idler gear. Due to the effect of the transmission torque , so that the expansion and contraction of the gear rod will be slow, stagnant or paused after the first gear is started. Cause the perplexity in the operation and use, extremely needs to be improved.

Therefore, the present invention provides a wheelchair device with an assisting function, which can prevent the wheelchair from shaking when it is raised upright or when it is stored, and provides synchronous and precise operation of the wheelchair's lifting and gear rod landing. Very sensitive and smooth function, which can increase the safety and precise operation value of the wheelchair device with assisting function, and can increase the service life of the wheelchair device with assisting function, thereby solving the above-mentioned problems.

Contents of the invention

The main purpose of the present invention is to provide a wheelchair device with an assisting function, which can eliminate the effect of the transmission torque, and make the transmission have excellent sensitivity, smoothness and accuracy, thereby improving the assisting function. Safety in use, operational value and service life of the functional wheelchair device.

In order to achieve the above object, the present invention provides a wheelchair device with assisting function, comprising:

A side frame set includes two side frames, a front cross bar is pivotally connected between the two side frames, a sleeve is provided at the front end of the side frame, and a wheel set is respectively provided on the side frames;

bipod tubes are respectively arranged in the casing, and the tripod tube has a tooth segment;

A seat frame set includes two seat frames arranged above the side frame set, the front end of the seat frame set is pivotally connected to the side frame set, and a rear cross bar is pivotally connected between the two seat frames;

a stretching mechanism, the two ends of which are connected to the front crossbar and the rear crossbar through transmission;

at least one drive gear set located at the front end of the side frame and linked by the front crossbar; and

At least one transmission gear is pivotally arranged on the front end of the side frame. The transmission gear includes a first curved tooth portion and a second curved tooth portion. The first curved tooth portion is geared to the drive gear set. The second curved tooth portion The teeth are connected to the tooth segment, the first curved tooth portion and the second curved tooth portion are concentric, and the first curved tooth portion and the second curved tooth portion are separated and have different diameter width settings.

The present invention also provides a wheelchair device with an assisting function, comprising:

A side frame set includes two side frames, a front cross bar is pivotally connected between the two side frames, a sleeve is provided at the front end of the side frame, and a wheel set is respectively provided on the side frames;

bipod tubes are respectively arranged in the casing, and the tripod tube has a tooth section;

A seat frame set includes two seat frames arranged above the side frame set, the front end of the seat frame set is pivotally connected to the side frame set, and a rear cross bar is pivotally connected between the two seat frames;

a stretching mechanism, the two ends of which are connected to the front crossbar and the rear crossbar through transmission;

at least one drive gear set located at the front end of the side frame and linked by the front crossbar; and

At least one transmission gear is pivotally arranged on the front end of the side frame. The transmission gear at least includes two first arc end surfaces and second arc end surfaces with different diameter widths. The first arc end surface and the second arc end surface are respectively provided with There is a tooth end, which is used to engage with the drive gear set and the row of teeth respectively.

The present invention also provides a wheelchair device with an assisting function, comprising:

A side frame set includes two side frames, a front cross bar is pivotally connected between the two side frames, a sleeve is provided at the front end of the side frame, and a wheel set is respectively provided on the side frames;

bipod tubes are respectively arranged in the casing, and the tripod tube has a tooth section;

A seat frame set includes two seat frames arranged above the side frame set, the front end of the seat frame set is pivotally connected to the side frame set, and a rear cross bar is pivotally connected between the two seat frames;

a stretching mechanism, the two ends of which are connected to the front crossbar and the rear crossbar through transmission;

At least one driving gear set is arranged on the front end of the side frame and is linked by the front cross bar. The driving gear set includes a first gear and a second gear which are geared together. The first gear is set on the front on the crossbar; and

At least one transmission gear is pivotally arranged on the front end of the side frame. The transmission gear is toothed with the tooth segment and the second gear, and the transmission distance between the transmission gear and the tooth segment is greater than that between the transmission gear and the second gear. Transmission distance between gears.

The present invention has beneficial effects: the present invention can lower the bipod tube when the two lifting arms are raised, so that the tripod tube is in the driving process, so that the driving force is less likely to be dispersed, and it can make the bipod tube The relatively smooth lowering increases the safety of the wheelchair device with assisting functions.

Description of drawings

Figure 1A is a schematic side view of the structure of the present invention;

Figure 1B is a schematic side view of the structure of the lifting operation of the present invention;

The transmission schematic diagram of Fig. 2 transmission mechanism of the present invention;

Fig. 3 is a schematic diagram of the linkage of the lifting operation of the present invention; and

Fig. 4 is a schematic diagram of another embodiment of the stretching mechanism of the present invention.

[Simple description of figure number]

Side frame group 10 Tripod group 20

Seat frame group 30 stretching mechanism 40

Transmission mechanism 50 side frame 11

Upper side frame 13 Lower side frame 14

Sleeve 131 Wheel Seat Tube 132

Abutting piece 133 Front cross bar 15

Support rod 16 Transmission box seat 141

Axle sleeve 161 wheel set 60

Front wheel 61 Rear wheel 62

Tripod tube 21 Tooth segment 211

Elastic part 23 pedal tube 22

Pedal 221 Upper Seat Tube 31

Lower seat tube 32 Rear cross bar 34

Backrest 36 Arm Arm 35

Telescopic rod 41 Motor gearbox 43

Power supply unit 44 Pneumatic unit 45

Telescopic auxiliary rod 42 Driving gear set 51

First gear 52 Second gear 53

Transmission gear 54 First arc end face 541

The second arc end face 542 The first arc tooth part 543

The second arc tooth part 544 control knob 351

Detailed ways

In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

Please refer to Fig. 1A to Fig. 3, the wheelchair device with assisting function of the present invention comprises a side frame group 10, a foot frame group 20, a seat frame group 30, an extension mechanism 40 and a transmission mechanism 50; the side frame group 10 includes left and right Two side frame 11, this side frame 11 comprises an upper side frame 13 and the lower side frame 14 that are connected, and this upper side frame 13, the lower side frame 14 are slightly curved pipe body (or rod body) respectively, and this upper side frame The front end of the side frame 13 forms a casing 131 downwards, and the rear end of the upper side frame 13 forms a round seat tube 132 downwards. In addition, an abutting piece 133 is provided at an appropriate position at the rear end of the upper side frame 13 . The connecting piece 133 has a design corresponding to the arc concave receiving surface of the seat frame set 30 . Between the two side frames 11 is a front cross bar 15 pivotally connected with a front end and a support rod 16 connected with a rear end. Connected transmission box seat 141, the transmission box seat 141 is connected to the inside of the casing 131 and has accommodating space, usually, the front cross bar 15 is pivotally connected between the left and right two transmission box seats 141; and the support rod 16 It is connected between the two left and right wheel frame tubes 132 . In a preferred embodiment, the support rod 16 is connected to the wheel frame tube 132 by a wheel hub 161 . Furthermore, the two side frames 11 are respectively provided with a wheel set 60, and the wheel set 60 includes a front wheel 61 and a rear wheel 62. A front wheel frame 611 located at the transmission box seat 141 is set, and the rear wheel 62 is located at the wheel frame tube 132 of the side frame 11, through the wheel frame tube 132 located between the support rod 16 and the wheel frame tube 132. The axle sleeve 161 is connected and arranged.

The tripod group 20 includes a tripod tube 21, which is respectively arranged in the two casing pipes 131 and protrudes downward. The tripod pipe 21 can slide and move in the casing pipe 131. The tripod pipe 21 inner side (promptly with respect to this transmission box seat 141 direction) has a tooth section 211, is connected with this transmission mechanism 50 phase gears; One end of the elastic member 23 is connected to an appropriate position in the upper side frame 13, one end of the elastic member 23 is abutted against the top of the tripod tube 21, and the other end of the elastic member 23 is connected to the upper side frame 13. Appropriate position, through this elastic part 23 constant exerts an elastic force effect to this tripod tube 21; A pedal tube 22 is arranged between the two tripod tubes 21, and this pedal tube 22 is provided with a pedal 221, and this pedal 221 can pass this pedal The height position of the pipe 22 is adjusted relative to the position provided on the stand pipe 21 .

The seat frame set 30 is arranged on the top of the frame set 10 in two sets of left and right. The front end of the seat frame set 30 is pivotally connected with the frame set 10, while the rear end is in a movable state. In a preferred embodiment, The seat frame group 30 includes an upper seat tube 31 and a lower seat tube 32. 32 rear ends are connected or pivotally connected; moreover, a pad (not shown) is sleeved between the left and right upper seat tubes 31, and a rear cross bar 34 is provided between the left and right two lower seat tubes 32 . Also, the rear end of the seat frame group 30 is pivotally provided with a backrest frame 36, and a backrest cushion (not shown) is arranged between the left and right backrest frames 36, and the appropriate position of the backrest frame 36 is pivotally provided with a The hand arm 35 is placed, and the front end of the arm 35 is provided with a control button 351 for controlling the start operation of the stretching mechanism 40 .

The stretching mechanism 40 is located between the front crossbar 15 and the rear crossbar 34. Please refer to FIG. Between the cross bar 15 and the rear cross bar 34 of the seat frame group 30, the telescopic rod 41 (such as a screw rod) is linked by a corresponding motor gear box 43, and the motor gear box 43 accepts a power supply ( Such as the power supply of the storage battery) 44, the power supply device 44 can be arranged on the support rod 16, and is connected with the motor gearbox 43 circuit by a power line. Furthermore, the telescopic rod 41 can be a solid air rod (or hydraulic rod) in the form of air pressure. As shown in Figure 4, the telescopic rod 41 is linked by a pneumatic device 45 (or hydraulic device). The stretching mechanism 40 may further include two telescopic auxiliary rods 42, the two ends of the telescopic auxiliary rods 42 are connected to the front cross bar 15 and the rear cross bar 34, and are located on both sides of the telescopic rod 41 to achieve greater Good driving balance; since the telescopic rod 41 can be connected to the front cross bar 15 to rotate when telescopic, so in this embodiment, the telescopic rod 41 and the telescopic auxiliary rod 42 are designed to connect the front A crossbar of 15 is preferred.

The transmission mechanism 50 includes a drive gear set 51. Please refer to FIG. The transmission box seat 141 further includes a first gear 52 and a second gear 53. The first gear 52 is arranged on the front cross bar 15 so that the first gear 52 can move with the front cross bar 15. The second gear 53 is pivotally set in the transmission case seat 141, and is toothed with the first gear 52; moreover, a transmission gear 54 is pivotally arranged at the front end in the transmission case seat 141, and the transmission gear 54 includes a first curved end surface 541 and a second curved end surface 542 with two different diameter widths, the first curved end surface 541 and the second curved end surface 542 are respectively provided with a first curved tooth portion 543 and a second curved tooth portion 544, the first curved tooth portion 543 is toothed to the second gear 53, and the second curved tooth portion 544 is toothed to the tooth segment 211 of the tripod tube 21; in the aforementioned design, the first curved tooth portion 543 ( The first arc tooth portion 541) and the second arc tooth portion 544 (the second arc end surface 542) are concentric, and the first arc tooth portion 543 (the first arc end surface 541) and the second arc tooth portion 544 (the second arc end surface 542) are concentric. The end faces 542) are separated and have different diameter widths. In a preferred embodiment, the diameter width of the second arc tooth portion 544 (second arc end face 542) is larger than that of the first arc tooth portion 543 (the first arc tooth portion 543). The radial width of an arc end face 541).

The transmission gear 54 is used as a transmission medium between the second gear 53 and the tooth segment 211, such as a transmission medium, and the transmission distance between the tooth segment 211 and the transmission gear 54 is greater than that of the second gear 53 and the transmission gear 54. The transmission distance between, that is, the transmission gear 54 has a subsequent transmission distance amplification effect, and cooperates with the design of the tooth segment 211 and the appropriate number of teeth of the second arc tooth portion 544, so that the linkage tripod tube 21 of the transmission mechanism 50 has Very sensitive and stable effect; Again, this transmission medium part can be made of the transmission gear 54 of single gear form, and first gear 52 is amplified, and make this first gear 52, second gear 53, transmission gear 54 The diameter-to-width ratio is set to be large, small, and medium, and the effect of amplifying the transmission distance can also be achieved through the transmission medium, that is, the transmission distance between the transmission gear 54 and the tooth segment 211 is greater than that between the transmission gear 54 and the second gear. The transmission distance between the gears 53. But, the enlargement of the first gear 52 at this moment will form the problem of wheelchair structure and space combination, because this problem is not what this case intends to overcome, it will not be repeated.

In this way, when the present invention carries out the lifting operation of the wheelchair, the motor gearbox 43 is started to make the telescopic rod 41 perform the stretching operation. Gear 52 rotates, and makes the second gear 53, transmission gear 54 of the torsional force of first gear 52 direct transmission action, and can not produce transmission torque, moreover, because this second gear 53 is the first with this transmission gear 54 The curved tooth portion 543 is toothed, and the second curved tooth portion 544 of the transmission gear 54 is toothed with the tooth segment 211 of the tripod tube 21, and at the same time, the elastic member 23 acts on the tripod tube 21, So that when the tripod tube 21 is linked downward, it has a more sensitive linkage effect, without torque braking, and there will be no pause or hysteresis. Therefore, the transmission The linkage of the gear 54 to the tripod tube 21 will appear to be quite timely and smooth, and break through the bottleneck in the linkage of the prior art, and rely on and solve its missing problem.

During the lifting operation of the aforementioned wheelchair, the rear crossbar 34 will be pushed up by the telescopic rod 41, and the seat frame group 30 will finally be in a slightly erect state, so that the occupant will be naturally pushed up to stand, and at the same time the feet The frame tube 21 is in a positioning stop state when it touches the ground downwards, so as to prevent the movement of the wheelchair and assist the occupant to achieve the function of assisting in standing safely.

When the wheelchair is lowered, the motor gear box 43 is started again to make the telescopic rod 41 shrink, so that the rear cross bar 34 and the seat frame group 30 can be operated in reverse through the stretch mechanism 40 and the transmission mechanism 50. Return to the original state, at the same time through the gear movement of the tooth segment 211 and the second curved tooth portion 544 of the transmission gear 54, the tripod tube 21 is raised and retracted, and the wheelchair returns to a freely movable state, and the elastic member 23 Acting on the tripod tube 21, it makes excellent transmission stability for the next lifting operation.

In summary, it is only a preferred embodiment of the present invention, and is not intended to limit the implementation scope of the present invention. All equivalent changes and Modifications should be included within the scope of the claims of the present invention.

Claims (20)

1. the wheelchair device of a tool assisting function is characterized in that, comprises:

One bogie side frame group includes two bogie side frames, is articulated with a front rail between this two bogie side frame, and this two bogie side frames front end is respectively equipped with a sleeve pipe, and this two bogie side frame is respectively equipped with wheels;

The bipod pipe is located at respectively in this sleeve pipe, this bipod pipe wherein one have a tooth section; One seat group includes two seats and is located at this two bogie side frames group top, and this seat group front end and this two bogie side frames group are articulated, and are articulated with a rear transverse rod between this two seat;

One extension means, its two ends transmission respectively are linked to this front rail and this rear transverse rod;

At least one drive gear set, be located at this two bogie side frame front end and by this front rail institute interlock; And

At least one travelling gear; Be hubbed at the front end of this two bogie side frame; This travelling gear includes the one first curved tooth portion and the second curved tooth portion, this first curved tooth portion this drive gear set of toe joint, this second curved tooth portion this tooth section of toe joint; This first curved tooth portion and the second curved tooth portion are concentric, and this first curved tooth portion and the second curved tooth portion are and separate and have the wide setting in different footpaths.

2. the wheelchair device of tool assisting function according to claim 1 is characterized in that, it is wide that wherein the footpath of this second curved tooth portion is wider than the footpath of this first curved tooth portion.

3. the wheelchair device of tool assisting function according to claim 1; It is characterized in that wherein this two bogie side frames front end is formed with the transmission block that is connected and is communicated with this sleeve pipe respectively, this transmission block is in order to be installed with this drive gear set and this travelling gear; This drive gear set includes one first gear and second gear; This first gear is located on this front rail, and this second gear teeth is connected to this first curved tooth portion of this travelling gear, and this front rail is articulated on this transmission block.

4. the wheelchair device of tool assisting function according to claim 1 is characterized in that, wherein this seat group rear is pivoted with one and leans on frame, should lean on the frame both sides be respectively equipped with one and hold up arm, and this is held up one of them front end of arm to be provided with one and controls button.

5. the wheelchair device of tool assisting function according to claim 1 is characterized in that, wherein one of them in this two bogie side frame is provided with an elastic component, and this elastic component one end is linked in this two bogie side frame, and this elastic component other end is connected to this foot rest pipe.

6. the wheelchair device of tool assisting function according to claim 1; It is characterized in that; Wherein this extension means includes an expansion link; These expansion link two ends are linked to this front rail and this rear transverse rod, and this expansion link receives the interlock of a motor gear case, and this motor gear case is accepted the power supply supply of a supply unit.

7. the wheelchair device of tool assisting function according to claim 1; It is characterized in that; Wherein this extension means includes an expansion link, and these expansion link two ends are linked to this front rail and this rear transverse rod, and this expansion link is the solid and gas pressure bar of an air pressure form or the hydraulic pressure rod of hydraulic pressure form.

8. the wheelchair device of tool assisting function according to claim 1; It is characterized in that; Wherein this extension means further comprises two flexible auxiliary rods, and these flexible auxiliary excellent two ends are connected with in this front rail and this rear transverse rod, and this two flexible auxiliary rod is positioned at the both sides of this extension means.

9. the wheelchair device of tool assisting function according to claim 3 is characterized in that, wherein the intersegmental transmission of this travelling gear and this tooth distance is greater than the transmission distance between this second gear and this travelling gear.

10. the wheelchair device of a tool assisting function is characterized in that, comprises:

One bogie side frame group includes two bogie side frames, is articulated with a front rail between this two bogie side frame, and this two bogie side frames front end is respectively equipped with a sleeve pipe, and this two bogie side frame is respectively equipped with wheels;

The bipod pipe is located at respectively in this sleeve pipe, and this bipod pipe has a tooth section respectively; One seat group includes two seats and is located at this two bogie side frames group top, and this seat group front end and this two bogie side frames group are articulated, and are articulated with a rear transverse rod between this two seat;

One extension means, its two ends transmission respectively are linked to this front rail and this rear transverse rod; At least one drive gear set, be located at this two bogie side frame front end and by this front rail institute interlock; And

At least one travelling gear; Be hubbed at the front end of this two bogie side frame; This travelling gear includes the first wide arc end face of two Different Diameter and the second arc end face at least, is respectively equipped with increment on this first arc end face and the second arc end face, is used for respectively and this drive gear set, this tooth section toe joint mutually.

11. the wheelchair device of tool assisting function according to claim 10 is characterized in that, wherein this first arc end face and this second arc end face are concentric setting.

12. the wheelchair device of tool assisting function according to claim 10 is characterized in that, it is wide that wherein the footpath of this second arc end face is wider than the footpath of this first arc end face.

13. the wheelchair device of tool assisting function according to claim 10; It is characterized in that wherein this two bogie side frames front end is formed with the transmission block that is connected and is communicated with this sleeve pipe respectively, this transmission block is in order to be installed with this drive gear set and this travelling gear; This drive gear set includes one first gear and second gear; This first gear is located on this front rail, and this second gear teeth is connected to this first arc end face of this travelling gear, and this front rail is articulated on this transmission block.

14. the wheelchair device of tool assisting function according to claim 10; It is characterized in that wherein this seat group rear is pivoted with one and leans on frame, should lean on the frame both sides to be respectively equipped with one and hold up arm; This is held up one of them front end of arm to be provided with one and controls button; In this two bogie side frame one of them is provided with an elastic component, and this elastic component one end is linked in this two bogie side frame, and this elastic component other end is connected to this foot rest pipe.

15. the wheelchair device of tool assisting function according to claim 10; It is characterized in that; Wherein this extension means includes an expansion link; These expansion link two ends are linked to this front rail and this rear transverse rod, and this expansion link receives the interlock of a motor gear case, and this motor gear case is accepted the power supply supply of a supply unit.

16. the wheelchair device of tool assisting function according to claim 10; It is characterized in that; Wherein this extension means includes an expansion link, and these expansion link two ends are linked to this front rail and this rear transverse rod, and this expansion link is the solid and gas pressure bar of an air pressure form or the hydraulic pressure rod of hydraulic pressure form.

17. the wheelchair device of tool assisting function according to claim 10; It is characterized in that; Wherein this extension means further comprises two flexible auxiliary rods, and these flexible auxiliary excellent two ends are connected with in this front rail and this rear transverse rod, and this two flexible auxiliary rod is positioned at the both sides of this extension means.

18. the wheelchair device of a tool assisting function is characterized in that, comprises:

One bogie side frame group includes two bogie side frames, is articulated with a front rail between this two bogie side frame, and this two bogie side frames front end is respectively equipped with a sleeve pipe, and this two bogie side frame is respectively equipped with wheels;

The bipod pipe is located at respectively in this sleeve pipe, and this bipod pipe has a tooth section respectively;

One seat group includes two seats and is located at this two bogie side frames group top, and this seat group front end and this two bogie side frames group are articulated, and are articulated with a rear transverse rod between this two seat;

One extension means, its two ends transmission respectively are linked to this front rail and this rear transverse rod;

At least one drive gear set is located at the front end of this two bogie side frame and by this front rail institute interlock, this drive gear set includes one first gear and second gear of phase toe joint, and this first gear is located on this front rail; And

At least one travelling gear is hubbed at the front end of this two bogie side frame, and this travelling gear and this tooth section, this second gear be toe joint mutually, and the intersegmental transmission distance of this travelling gear and this tooth is greater than the transmission distance between this travelling gear and this second gear.

19. the wheelchair device of tool assisting function according to claim 18; It is characterized in that; Wherein this travelling gear includes the one first curved tooth portion and the second curved tooth portion, this first curved tooth portion this second gear of toe joint, this second curved tooth portion this tooth section of toe joint; This first curved tooth portion and the second curved tooth portion are concentric, and this first curved tooth portion and the second curved tooth portion are and separate and have the wide setting in different footpaths.

20. the wheelchair device of tool assisting function according to claim 18; It is characterized in that; It is wide that wherein the footpath of this second curved tooth portion is wider than the footpath of this first curved tooth portion; And one of them in this two bogie side frame is provided with an elastic component, and this elastic component one end is linked in this two bogie side frame, and this elastic component other end is connected to this foot rest pipe.

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