CN210872561U - an electric wheelchair - Google Patents

Abstract

The utility model discloses an electric wheelchair, which comprises a vehicle body, a seat is fixed above the vehicle body, the seat comprises a bottom surface and side walls fixed on both sides of the bottom surface; The middle part of the bottom surface is provided with a raised base, the base is provided with a seat surface, and leg placement areas are respectively formed between the two sides of the base and the seat; A telescopic support rod is installed at the front end, the bottom of the telescopic support rod is fixedly connected with the vehicle body, and the top of the telescopic support rod is hinged with a control panel electrically connected to the energy power device and the drive device respectively. When the electric wheelchair disclosed by the utility model is used, the user does not need to rely on others, and the user can board the wheelchair by himself, which is convenient for the user to use.

Description

an electric wheelchair

technical field

The utility model relates to a wheelchair, in particular to an electric wheelchair.

Background technique

At present, when users use traditional electric wheelchairs, they need to turn their backs to the wheelchair and can only sit in the wheelchair with the help of others. It is difficult for users to sit in the wheelchair without assistance. is very inconvenient.

Utility model content

According to the above-mentioned technical problem, an electric wheelchair is provided. The technical means adopted by the utility model are as follows:

An electric wheelchair includes a vehicle body, a driving wheel is arranged in front of the bottom of the vehicle body, a driven wheel is arranged at the rear of the bottom of the vehicle body, and a driving device for driving the driving wheel to rotate is arranged in the vehicle body, An energy power device that provides energy for the driving device, a seat is fixed above the vehicle body, the seat includes a bottom surface and side walls fixed on both sides of the bottom surface; the top of the side wall is fixed with an arc-shaped support arm;

The middle part of the bottom surface is provided with a raised base, the base is provided with a seat surface, and leg placement areas are respectively formed between two sides of the base and the seat;

A retractable support rod is installed at the front end of the vehicle body, the bottom of the retractable support rod is fixedly connected with the vehicle body, and the top of the retractable support rod is hinged with electric power devices and driving devices respectively. Connected control panel. The control panel is used to control the operation of the driving device, and then control the rotation of the driving wheel to realize the movement of the vehicle body, which is common in the prior art and will not be described here.

A handrail is fixed in the middle of the telescopic support rod.

The front end of the leg rest area is mounted with a detachable leg shield.

When the user is using, the user faces the control panel, sits on the seat, and places his legs in the leg rest area. When the user wants to sit in a wheelchair on the bed by himself, he only needs to support himself with his hands. You can easily sit on the seat surface by leaning forward, and when in use, the front of the user faces the wheelchair directly instead of the back side of the wheelchair.

The seat surface is connected to the base through a scissor lift mechanism arranged at the bottom of the seat surface, and the scissor lift mechanism includes a top plate fixedly connected to the lower surface of the seat surface and a bottom plate fixedly connected to the base and two connecting rod groups arranged between the top plate and the bottom plate and arranged in parallel;

The connecting rod group includes a connecting rod I and a connecting rod II which are arranged in a cross. The bottom of the connecting rod II is fixed with a sliding rail I matched with the sliding block I, the sliding block I is slidingly matched with the sliding rail I, the bottom end of the connecting rod II is hinged with the upper surface of the bottom plate, and the The top end of the connecting rod I is hinged with the side wall of the seat surface, and the bottom end of the connecting rod I is hinged with the lead screw nut of the lead screw fixed on the bottom plate. The shearing type lifting mechanism further comprises: A lead screw driving device for driving the movement of the lead screw, the lead screw driving device includes a driven sprocket fixed on the input end of the lead screw, and a driving sprocket and a penetrating sprocket are fixed in the rear end of the base. The base is a rocker that is matched with the driving chain wheel, and the driving chain wheel is connected to the two driven chain wheels through a transmission chain. When the height of the seat surface needs to be adjusted, the driving sprocket rotates by rocking the rocker, and the driving sprocket drives the driven sprocket to rotate, and then the lead screw of the lead screw rotates, and the lead screw nut moves linearly, so that through the connecting The cooperation of rod I and link II raises or lowers the seat surface.

The retractable support rod includes an inner rod and an outer rod sleeved outside the inner rod, the bottom end of the outer rod is fixedly connected with the front end of the vehicle body, and the top end of the inner rod is connected with the control panel Hinged, the inner rod is radially machined with a through hole group I, the through hole group I includes a plurality of through holes I uniformly arranged along the axial direction of the outer rod, and the outer rod is radially machined with the The through hole II is matched with the through hole I, and the outer rod and the inner rod are fixed through the through hole I and the through hole II through a safety pin. The height of the control panel can be adjusted autonomously as required by means of a retractable support rod.

The rear end of the base is provided with a drawer, and the energy power device is arranged in the base. The drawer can store the user's daily necessities.

The upper surface of the rear end of the seat surface is provided with a groove, and a draw-out backrest is arranged in the groove, and the draw-out backrest is connected to the groove through the backrest retracting devices respectively arranged on both sides of the groove. connected, the backrest retracting device includes a sliding rail II arranged in the groove, the front end of the sliding rail II is provided with a sliding block II that cooperates with the sliding rail II, and the rear of the sliding rail II The end is hinged with one end of the backrest support rod, and the other end of the backrest support rod is hinged with the middle of the withdrawable backrest, and the withdrawable backrest is provided with a cloth handle. When the user needs to use the draw-out backrest, he only needs to pull up the cloth handle, the slider II moves backward, and the backboard support rod changes from the original horizontal state to the inclined state to support the draw-out backrest. When the user is not using the pull-out backrest, it can be placed in the groove.

The utility model has the following advantages:

The height of the control panel can be adjusted independently, the height of the seat surface can be adjusted independently according to the needs of the user, the withdrawable backrest can be selected to be withdrawn or not withdrawn according to the needs of the user, and the electric wheelchair disclosed by the utility model does not need to rely on others when in use, the user himself You can board a wheelchair for the convenience of the user.

Based on the above reasons, the utility model can be widely promoted in the fields of wheelchairs and the like.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

FIG. 1 is a perspective view of an electric wheelchair in a specific embodiment of the present invention.

Fig. 2 is a front view of an electric wheelchair in a specific embodiment of the present invention.

3 is a back view of an electric wheelchair in a specific embodiment of the present invention.

4 is a side view of an electric wheelchair in a specific embodiment of the present invention.

5 is a top view of an electric wheelchair in a specific embodiment of the present invention.

FIG. 6 is an internal schematic diagram of an electric wheelchair in a specific embodiment of the present invention.

7 is a schematic structural diagram of a scissor lift mechanism in a specific embodiment of the present invention.

8 is a schematic structural diagram of a screw drive device in a specific embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a telescopic support rod in a specific embodiment of the present invention.

FIG. 10 is a schematic structural diagram of the pull-out backrest in a specific embodiment of the present invention when the pull-out backrest is pulled out.

FIG. 11 is a schematic view of the structure of the draw-out backrest in the groove according to the specific embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described above are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in FIGS. 1 to 11 , an electric wheelchair includes a vehicle body 1 with a driving wheel 11 at the front of the bottom of the vehicle body 1 and a driven wheel 12 at the rear of the bottom of the vehicle body 1 . The body 1 is provided with a driving device 13 for driving the driving wheel 11 to rotate, and an energy power device 14 for providing energy for the driving device 13. A seat 2 is fixed above the vehicle body 1, and the seat 2 includes a bottom surface 21 and a The side walls 22 are fixed on both sides of the bottom surface 21; the top of the side walls 22 is fixed with an arc-shaped support arm 23;

The middle part of the bottom surface 21 is provided with a raised base 3, the base 3 is provided with a seat surface 31, and leg placement areas 24 are respectively formed between the two sides of the base 3 and the seat 2;

A retractable support rod 4 is installed at the front end of the vehicle body 1 , the bottom of the retractable support rod 4 is fixedly connected with the vehicle body 1 , and the top of the retractable support rod 4 is hinged with the energy power source respectively. The control panel 5 to which the device 14 and the drive device 13 are electrically connected.

A handrail 41 is fixed in the middle of the telescopic support rod 4 .

A detachable leg shield 25 is installed at the front end of the leg rest area 24 .

When the user is using, the user's face faces the control panel 5, sits on the seat surface 31, and his legs are placed in the leg rest area 24 respectively. You can easily sit on the seat surface 31 by supporting your body with your hands and leaning forward, and when in use, the front of the user faces the wheelchair directly instead of the back side of the wheelchair.

The seat surface 31 is connected to the base 3 through a scissor lift mechanism 6 arranged at the bottom of the seat surface 31. The scissor lift mechanism 6 includes a top plate 61 fixedly connected to the lower surface of the seat surface 31, and The bottom plate 62 fixedly connected to the base 3 and two connecting rod groups arranged between the top plate 61 and the bottom plate 62 and arranged in parallel;

The connecting rod group includes a connecting rod I63 and a connecting rod II64 arranged in a cross, the middle part of the connecting rod I63 is hinged with the middle part of the connecting rod II64, the top of the connecting rod II64 is hinged with a slider I65, and the top plate is hinged. The bottom of the connecting rod II64 is fixed with a slide rail I66 matched with the slider I65, the slider I65 is matched with the slide rail I66, and the bottom end of the connecting rod II64 is hinged with the upper surface of the bottom plate 62, The top end of the connecting rod I63 is hinged with the side wall of the seat surface 31, and the bottom end of the connecting rod I63 is hinged with the lead screw nut 68 of the lead screw 67 fixed on the bottom plate 62. The cutting lift mechanism 6 also includes a screw driving device 69 for driving the screw 67 to move. The screw driving device 69 includes a driven sprocket 691 fixed on the input end of the screw 67. The base 3 A driving sprocket 692 and a rocker 693 that passes through the base 3 and is matched with the driving sprocket 691 are fixed in the rear end of the driving sprocket 692 . The driving chain wheel 692 connects the two driven chains through a transmission chain 694 Round 691. When the height of the seat surface 31 needs to be adjusted, the driving sprocket 692 rotates by the rocking of the rocker 693, and the driving sprocket 692 drives the driven sprocket 691 to rotate, and then the lead screw of the lead screw 67 rotates, and the lead screw nut rotates. 68 moves linearly, so that the seat surface 31 is raised or lowered through the cooperation of the connecting rod I63 and the connecting rod II64.

The retractable support rod 4 includes an inner rod 42 and an outer rod 43 sleeved outside the inner rod 42. The bottom end of the outer rod 43 is fixedly connected with the front end of the vehicle body 1, and the inner rod 42 The top end of the rod is hinged with the control panel 5, the inner rod 42 is radially machined with a through hole group I, and the through hole group I includes a plurality of through holes I421 uniformly arranged along the axial direction of the outer rod. The outer rod 43 is radially machined with a through hole II 431 matching the through hole I 421 , and the outer rod 43 and the inner rod 42 are fixed through the through hole I 421 and the through hole II 431 by a safety pin 44 . The height of the control panel 5 can be adjusted independently according to the need through the retractable support rod 4 .

The rear end of the base 3 is provided with a drawer 32 , and the energy power device 13 is arranged in the base 3 . The drawer 32 can store the user's daily necessities.

The upper surface of the rear end of the seat surface 31 is provided with a groove 311 , and a pull-out backrest 7 is arranged in the groove 311 . The device is connected to the groove 311, and the backrest retracting device includes a slide rail II8 arranged in the groove 311. The front end of the slide rail II8 is provided with a slider II81 that cooperates with the slide rail II8. , the rear end of the slide rail II8 is hinged with one end of the backrest support rod 82, and the other end of the backrest support rod 82 is hinged with the middle of the withdrawable backrest 7, which is provided with a cloth handle 71. When the user needs to use the pull-out backrest 7, he only needs to pull up the cloth handle 71, the slider II moves backward, and the backboard support rod 82 changes from the original horizontal state to the inclined state, supporting the pull-out Backrest 7. When the user does not use the withdrawable backrest 7 , it is sufficient to put it into the groove 311 .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (7)

1. The utility model provides an electric wheelchair, includes the automobile body, the place ahead of the bottom of automobile body has the drive wheel, the rear of the bottom of automobile body has from the driving wheel, be equipped with in the automobile body drive wheel pivoted drive arrangement, for drive arrangement provides the energy power device of the energy, its characterized in that:

a seat is fixed above the vehicle body and comprises a bottom surface and side walls fixed on two sides of the bottom surface; an arc-shaped supporting arm is fixed at the top of the side wall;

a raised base is arranged in the middle of the bottom surface, a seat surface is arranged on the base, and leg placing areas are formed between two sides of the base and the seat respectively;

scalable bracing piece is installed to the front end of automobile body, the bottom of scalable bracing piece with automobile body fixed connection, the top of scalable bracing piece articulate have respectively with energy power device and drive arrangement electricity connect the control panel.

2. An electrically powered wheelchair in accordance with claim 1, wherein: the middle part of the telescopic supporting rod is fixed with a handrail.

3. An electrically powered wheelchair in accordance with claim 1, wherein: the front end in district is placed to the shank installs detachable leg guard board.

4. An electrically powered wheelchair in accordance with claim 1, wherein: the seat surface is connected with the base through a scissor type lifting mechanism arranged at the bottom of the seat surface, and the scissor type lifting mechanism comprises a top plate fixedly connected with the lower surface of the seat surface, a bottom plate fixedly connected with the base and two connecting rod groups arranged between the top plate and the bottom plate and arranged in parallel;

the connecting rod group comprises a connecting rod I and a connecting rod II which are arranged in a crossed manner, the middle part of the connecting rod I is hinged with the middle part of the connecting rod II, the top end of the connecting rod II is hinged with a sliding block I, the bottom of the top plate is fixed with a sliding rail I matched with the sliding block I, the slide block I is in sliding fit with the slide rail I, the bottom end of the connecting rod II is hinged with the upper surface of the bottom plate, the top end of the connecting rod I is hinged with the side wall of the seat surface, the bottom end of the connecting rod I is hinged with a screw nut of the screw rod fixed on the bottom plate, the scissor type lifting mechanism also comprises a lead screw driving device for driving the lead screw to move, the lead screw driving device comprises a driven chain wheel fixed on the input end of the lead screw, and a driving chain wheel and a rocker which penetrates out of the base and is matched with the driving chain wheel are fixed in the rear end of the base, and the driving chain wheel is connected with two driven chain wheels through a transmission chain.

5. An electrically powered wheelchair in accordance with claim 1, wherein: scalable bracing piece includes interior pole and cover and establishes outer pole outside interior pole, the bottom of outer pole with the front end fixed connection of automobile body, the top of interior pole with control panel is articulated, interior radial processing of pole has through-hole group I, through-hole group I includes a plurality of edges the axial align to grid's of outer pole through-hole I, outer radial processing of pole have with I assorted through-hole II of through-hole, outer pole with interior pole passes through the safety pin through-hole I with through-hole II is fixed.

6. An electrically powered wheelchair in accordance with claim 1, wherein: the rear end of the base is provided with a drawer, and the energy power device is arranged in the base.

7. An electrically powered wheelchair in accordance with claim 1, wherein: the utility model discloses a seat back, including seat face, back support, recess, back retraction device, back extension device, back support bracing piece, the rear end upper surface of seat face is equipped with the recess, be equipped with the pull-out type back in the recess, the pull-out type back is through setting up respectively the back retraction device of recess both sides with groove connection, back retraction device is including setting up slide rail II in the recess, be equipped with on the front end of slide rail II with II complex sliders II of slide rail, the rear end of slide rail II is articulated with the one end of back bracing piece, the other end of back bracing piece with the middle part of pull-out type back is articulated, install cloth matter handle on the.

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