CN110327167A - A kind of electric wheelchair - Google Patents

Abstract

The invention discloses an electric wheelchair, comprising 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 top of the side wall is fixed with an arc-shaped the support arm; the middle part of the bottom surface is provided with a raised base, the base is provided with a seat surface, and the legs are placed between the two sides of the base and the seat; the front end of the car body A telescopic support rod is installed, 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 with the energy power device and the driving device respectively. When using the electric wheelchair disclosed by the invention, the user can board the wheelchair without relying on others, which is convenient for the user.

Description

electric wheelchair

technical field

The invention relates to a wheelchair, in particular to an electric wheelchair.

Background technique

At present, when users use traditional electric wheelchairs, they need to face the wheelchair with their backs, and can only sit in the wheelchair with the help of others. Without the help of others, it is difficult for the user to sit in the wheelchair by himself. It is very inconvenient.

Contents of the invention

According to the technical problem raised above, an electric wheelchair is provided. The technical means adopted in the present invention are as follows:

An electric wheelchair, comprising a vehicle body, a driving wheel is provided at the front of the bottom of the vehicle body, a driven wheel is provided at the rear of the bottom of the vehicle body, 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, and 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 the legs are placed between the two sides of the base and the seat;

The front end of the vehicle body is equipped with a telescopic support rod, 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 electrical connections respectively connected to the energy power device and the driving device. Connected control panel. The control panel is used to control the operation of the driving device, and then control the rotation of the driving wheels to realize the movement of the vehicle body, which is a common prior art and will not be described too much here.

The middle part of the telescopic support rod is fixed with an armrest.

A detachable leg guard is installed at the front end of the leg placement area.

When the user is in use, the user faces the control panel, sits on the seat, and places both legs in the leg placement area. When the user wants to sit on the wheelchair on the bed by himself, he only needs to support himself with his hands The body can easily sit on the seat surface by leaning forward, and when in use, the user's front face is directly facing the wheelchair, and the user does not have to face the wheelchair directly from the back.

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 in parallel between the top plate and the bottom plate;

The connecting rod group includes connecting rod I and connecting rod II arranged crosswise, 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 slider I, and the top plate The bottom of the slider I is fixed with a slide rail I that is matched with the slider I, and the slider I is slidingly matched with the slide rail I, and 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 the lead screw nut of the screw fixed on the bottom plate, and the shear lifting mechanism also includes A lead screw driving device that drives the lead screw to move, the lead screw drive device includes a driven sprocket fixed on the input end of the lead screw, a driving sprocket and a threaded out sprocket are fixed in the rear end of the base Described base and the rocking bar that cooperates with described driving sprocket, described driving sprocket connects two described driven sprockets by transmission chain. When it is necessary to adjust the height of the seat surface, the driving sprocket rotates through the shaking of 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, thereby The cooperation of rod I and connecting rod II raises or lowers the seat surface.

The telescopic 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 to the front end of the vehicle body, and the top end of the inner rod is connected to the control panel Hinged, the inner rod is radially processed with through hole group I, and 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 processed with the The through hole I matches the through hole II, 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 independently according to the needs through the telescopic support rod.

The rear end of the base is provided with a drawer, and the energy power device is arranged in the base. The drawers can place 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 with the groove by the backrest retractable device respectively arranged on both sides of the groove. Connected, the backrest retractable device includes a slide rail II arranged in the groove, the front end of the slide rail II is provided with a slide block II that cooperates with the slide rail II, and the rear of the slide rail II The end is hinged with one end of the back support rod, and the other end of the back support rod is hinged with the middle part of the draw-out backrest, and a cloth handle is installed on the draw-out backrest. 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 bar changes from the original horizontal state to an inclined state to support the draw-out backrest. When the user does not use the pull-out backrest, just put it into the groove.

The present invention 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, and the draw-out backrest can be selected to be drawn out or not according to the needs of the user, and the electric wheelchair disclosed by the present invention does not need to rely on others when in use, and the user can It can be mounted on a wheelchair, which is convenient for users to use.

Based on the above reasons, the present invention can be widely promoted in fields such as wheelchairs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

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.

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

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

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

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

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

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

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

Fig. 10 is a schematic diagram of the structure when the drawable backrest is drawn out in a specific embodiment of the present invention.

Fig. 11 is a schematic diagram of the structure of the withdrawable backrest in the groove in the specific embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 11, an electric wheelchair includes a vehicle body 1, a drive wheel 11 is provided at the front of the bottom of the vehicle body 1, and a driven wheel 12 is provided 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 fixed on both sides of the bottom surface 21; the top of the side wall 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, and the base 3 is provided with a seat surface 31, and a leg placement area 24 is formed between both sides of the base 3 and the seat 2;

The front end of the car body 1 is equipped with a telescopic support rod 4, the bottom of the telescopic support rod 4 is fixedly connected with the car body 1, and the top of the telescopic support rod 4 is hinged with the energy source respectively. The device 14 is electrically connected to the control panel 5 of the driving device 13 .

An armrest 41 is fixed in the middle of the telescopic support rod 4 .

A detachable leg shield 25 is mounted on the front end of the leg rest area 24 .

When the user uses it, the user's face faces the control panel 5, sits on the seat surface 31, and both legs are respectively placed in the leg placement area 24, when the user wants to sit on the wheelchair on the bed by himself, he only needs to use the Support your body with your hands and lean forward to sit on the seat surface 31 easily. When in use, the front of the user faces the wheelchair directly, and the user does not need to face the wheelchair directly from the back.

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 a The bottom plate 62 fixedly connected to the base 3 and two connecting rod groups arranged in parallel between the top plate 61 and the bottom plate 62;

The connecting rod group includes connecting rod I63 and connecting rod II64 arranged crosswise, the middle part of the connecting rod I63 is hinged with the middle part of the connecting rod II64, the top end of the connecting rod II64 is hinged with a slider I65, and the top plate A slide rail I66 matched with the slide block I65 is fixed at the bottom of the bottom, the slide block I65 cooperates with the slide rail I slide 66, 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, 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, and the scissors The cutting type lifting mechanism 6 also includes a lead screw drive device 69 that drives the movement of the lead screw 67, and the lead screw drive device 69 includes a driven sprocket 691 fixed on the input end of the lead screw 67, and the base 3 A drive sprocket 692 and a rocker 693 that passes through the base 3 and matches with the drive sprocket 691 are fixed in the rear end of the drive sprocket 692, and the drive chain 692 is connected to the two driven chains through a transmission chain 694. Wheel 691. When the height of the seat surface 31 needs to be adjusted, the driving sprocket 692 is rotated by rocking the rocking bar 693, and the driving sprocket 692 drives the driven sprocket 691 to rotate, and then the leading screw of the leading screw 67 rotates, and the leading screw nut 68 moves linearly, thereby lifting or lowering the seat surface 31 through the cooperation of the connecting rod I 63 and the connecting rod II 64.

The telescopic 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 is hinged with the control panel 5, and the inner rod 42 is radially processed with a through hole group I, and the through hole group I includes a plurality of through holes I 421 uniformly arranged along the axial direction of the outer rod. The outer rod 43 is radially processed 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 through the safety pin 44 . The height of the control panel 5 can be adjusted autonomously as required through the telescopic 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 place 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 draw-out backrest 7 is arranged in the groove 311. The device is connected with the groove 311, and the backrest retractable device includes a slide rail II8 arranged in the groove 311, and a slide block II81 cooperating with the slide rail II8 is provided on the front end of the slide rail II8 , the rear end of the slide rail II8 is hinged to one end of the back support rod 82, and the other end of the back support rod 82 is hinged to the middle part of the draw-out backrest 7, and a cloth handle is installed on the draw-out backrest 7 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 an inclined state to support the pull-out backrest 7. Type backrest7. When the user does not use the draw-out backrest 7, just put it into the groove 311 and get final product.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for 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 technical solutions of the various embodiments of the present invention. scope.

Claims (7)

1. An electric wheelchair, comprising a vehicle body, the front of the bottom of the vehicle body has a driving wheel, the rear of the bottom of the vehicle body has a driven wheel, and the vehicle body is provided with a driving wheel that drives the rotation of the driving wheel A device, an energy power device providing energy for the driving device, is characterized in that: A seat is fixed above the car body, and 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 the legs are placed between the two sides of the base and the seat; The front end of the vehicle body is equipped with a telescopic support rod, 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 electrical connections respectively connected to the energy power device and the driving device. Connected control panel. 2. An electric wheelchair according to claim 1, characterized in that: the middle part of the telescopic support rod is fixed with an armrest. 3. An electric wheelchair according to claim 1, characterized in that: a detachable leg guard is installed at the front end of the leg rest area. 4. An electric wheelchair according to claim 1, characterized in that: 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 a top plate fixedly connected to the lower surface of the seat surface, a bottom plate fixedly connected to the base, and two connecting rod groups arranged in parallel between the top plate and the bottom plate; The connecting rod group includes connecting rod I and connecting rod II arranged crosswise, 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 slider I, and the top plate The bottom of the slider I is fixed with a slide rail I that is matched with the slider I, and the slider I is slidingly matched with the slide rail I, and 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 the lead screw nut of the screw fixed on the bottom plate, and the shear lifting mechanism also includes A lead screw driving device that drives the lead screw to move, the lead screw drive device includes a driven sprocket fixed on the input end of the lead screw, a driving sprocket and a threaded out sprocket are fixed in the rear end of the base Described base and the rocking bar that cooperates with described driving sprocket, described driving sprocket connects two described driven sprockets by transmission chain. 5. An electric wheelchair according to claim 1, characterized in that: the telescopic support rod comprises an inner rod and an outer rod sleeved outside the inner rod, the bottom end of the outer rod is connected to the The front end of the car body is fixedly connected, the top end of the inner rod is hinged to the control panel, and the inner rod is radially processed with a through hole group I, and the through hole group I includes a plurality of holes along the axial direction of the outer rod Evenly arranged through holes I, the outer rod is radially processed with a through hole II matching the through hole I, the outer rod and the inner rod pass through the through hole I and the through hole through the safety pin Through hole II is fixed. 6. An electric wheelchair according to claim 1, characterized in that: a drawer is provided at the rear end of the base, and the energy power device is arranged in the base. 7. An electric wheelchair according to claim 1, characterized in that: 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 passed through respectively The backrest retractable device arranged on both sides of the groove is connected with the groove, and the backrest retractable device includes a slide rail II arranged in the groove, and the front end of the slide rail II is provided with a The slider II matched with the slide rail II, the rear end of the slide rail II is hinged to one end of the back support rod, the other end of the back support rod is hinged to the middle part of the draw-out backrest, and the draw-out backrest There is a cloth handle on it.