Folding electric wheelchair

Abstract

The utility model provides a folding electric wheelchair and relates to the field of electric wheelchairs, the folding electric wheelchair comprises a seat plate, a supporting frame is fixedly arranged at the bottom end of the seat plate, a fixing plate is arranged below the supporting frame, a lifting device is arranged between the supporting frame and the fixing plate, an extension assembly is arranged at the front end of a double-cross arm, and a transmission assembly is arranged at the rear end of the seat plate. A movable supporting assembly is arranged at the top end of the transmission assembly, and handrail assemblies are arranged on the two sides of the movable supporting assembly. Through the arrangement of the double cross arms and the transmission assembly, when a user sitting on the wheelchair needs to be transferred to other beds, the transmission assembly is started to drive the movable supporting assembly to rotate towards the lower rear portion, a worker can transfer the user on the wheelchair to other beds more conveniently, meanwhile, flexible conversion from the wheelchair to the bed is achieved, and the practicability is high. The comfort and convenience of the wheelchair are improved, the process of transferring the wheelchair to a bed by a user is simplified, and potential risks and inconvenience are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric wheelchair field, specifically, it relates to folding electric wheelchair. BACKGROUND

[0002] In modern society, with the aggravation of population aging and the increasing of disabled population, the demand for convenient, comfortable and functional wheelchair is increasing, however, the traditional wheelchair design is often limited to basic movement function, lacks necessary adjustment and conversion function, so that the user has to face many inconveniences when needing to rest or transfer.

[0003] For example: the utility model patent (application number: 201620930994.1) discloses "a multifunctional electric wheelchair", the specification discloses: it includes wheelchair chassis, seat support frame, seat support frame includes seat cushion support frame equipped with seat cushion, backrest support frame equipped with seat backrest, the left and right ends of backrest support frame are equipped with seat armrest respectively, the seat cushion support frame is equipped with vertical support column connected with the upper end of wheelchair chassis; the front end of wheelchair chassis is equipped with two driven front wheels, the rear end of wheelchair chassis is equipped with two driven rear wheels, each driven rear wheel is driven through direct current speed reducer motor, the wheelchair chassis is also equipped with charging lithium battery, wheelchair controller; the seat armrest is equipped with controller, speaker and display screen, the front and rear ends of wheelchair chassis are equipped with ultrasonic distance sensor respectively, the wheelchair cushion is equipped with weighing sensor, the wheelchair controller is equipped with wireless communication module. Through the above design, the utility model has the advantages of novel structure design, high intelligent degree, various functions and convenient use; the above patent can prove the defects existing in the prior art.

[0004] Therefore, we make improvement on it, and propose folding electric wheelchair. SUMMARY

[0005] The utility model aims at: the existing wheelchair lacks necessary adjustment and conversion function.

[0006] In order to achieve the above object, improve the above problems, the utility model provides a folding electric wheelchair, including the seat plate, the bottom of the seat plate is fixedly equipped with the support frame, the lower portion of the support frame is equipped with the fixed plate, the support frame and the fixed plate are equipped with the lifting device between, the lifting device includes double cross arm and drive piece, the inside of the double cross arm is equipped with the movement component, the front end of the double cross arm is equipped with the extension component, the rear end of the seat plate is equipped with the transmission component, the top of the transmission component is equipped with the movable support component, the transmission component can make the seat plate with movable support component 180 DEG, both sides of the movable support component are equipped with the handrail component, two the handrail component is symmetrically set up, two the handrail component can be controlled individually, the top of the movable support component is equipped with the movable backrest, the rear end of the extension component and the bottom of the movable backrest are equipped with the telescopic component.

[0007] As the preferred technical scheme of the application, the transmission component includes a protective shell fixed to the rear end of the support frame, two mounting plates are fixedly arranged inside the protective shell and located on both sides of the support frame, a third gear is rotatably arranged at the end of the mounting plate away from the support frame, a second gear is rotatably arranged above the second gear and connected with the mounting plate, a first gear is rotatably arranged at the top of the second gear and connected with the mounting plate, a connecting plate is fixedly arranged at the top of the first gear, a second motor is fixedly arranged inside the support frame, and the output end of the second motor is connected with the transmission shaft through a second speed reducer.

[0008] As the preferred technical scheme of the application, the movable support component includes a backrest fixed between the two connecting plates, a fixed shell is fixedly arranged at the rear end of the backrest, the handrail component includes a first fixed rod arranged above the connecting plate, a second fixed rod is hingedly arranged at the front end of the first fixed rod, a support plate is fixedly arranged at the top of the second fixed rod, a first motor is fixedly arranged at the side of the first fixed rod close to the movable backrest and connected with the rear end of the backrest, an installation shaft is fixedly arranged at the side of the first fixed rod close to the movable backrest, and the output end of the first motor is connected with the installation shaft through a first speed reducer.

[0009] As a preferred technical scheme of the present application, the double cross arm comprises two sliding plates slidably connected to the bottom end of the support frame, a second sliding groove is formed in the bottom end of the sliding plate, two support plates are fixedly arranged on the top end of the fixed plate, a first sliding groove is formed in the support plate, an installation rod is slidably arranged in the first sliding groove, a first hinged rod is hingedly arranged on the support plate at the rear end, a second hinged rod is fixedly arranged at the two ends of the installation rod and hingedly connected to the middle of the first hinged rod, a third hinged rod is hingedly arranged at the end of the second hinged rod, the third hinged rod is slidably connected to the inside of the second sliding groove, a fourth hinged rod is hingedly arranged at the end of the first hinged rod and hingedly connected to the middle of the third hinged rod, the end of the fourth hinged rod is hingedly connected to the rear end of the bottom end of the sliding plate, and the driving member comprises a second telescopic rod hingedly arranged at the middle of the installation rod and fixedly connected to the fixed plate at the end.

[0010] As a preferred technical scheme of the present application, the moving assembly comprises a connecting shaft rotatably connected between the two sliding plates, a first telescopic rod is fixedly arranged on the connecting shaft, and the end of the first telescopic rod is hingedly connected to the bottom end of the support frame.

[0011] As a preferred technical scheme of the present application, the extension assembly comprises a fixed shaft arranged at the front end of the support frame, fixed discs are fixedly arranged at the two ends of the fixed shaft, four threaded holes are formed on the side of the fixed disc away from the fixed shaft and equidistantly arranged around the center of the fixed disc, adjustment plates are rotatably arranged on the side of the fixed disc away from the fixed shaft, the top end of the two adjustment plates is fixedly provided with the same extension plate, hand screws are arranged on the side of the adjustment plate away from the fixed shaft, the end of the hand screw extends to the inside of the threaded hole through the adjustment plate, and the hand screw is threadedly connected with the adjustment plate.

[0012] As a preferred technical scheme of the present application, the movable backrest comprises a movable plate arranged at the top end of the backrest plate, and a hinged frame is hingedly arranged at the rear end of the movable plate.

[0013] As a preferred technical scheme of the present application, the telescopic assembly comprises a sliding frame, the two sides of the sliding frame are provided with movable grooves, the top end of the movable groove is provided with a plurality of upwardly inclined clamping grooves, a sliding rod is slidably arranged in the sliding frame, the two sides of the sliding rod are provided with upwardly inclined inclined grooves, a torsional spring is arranged in the sliding rod, a clamping column is fixedly arranged at one end of the torsional spring, and the clamping column is arranged in the inclined groove.

[0014] One of the sliding frames is fixedly arranged in the support frame, and the front end of the sliding rod at the bottom end of the support frame is fixedly connected with the fixed shaft.

[0015] The other sliding frame is fixedly arranged at the rear end of the backrest plate, and the top end of the sliding rod at the rear end of the backrest plate is hingedly connected with the hinged frame through the fixed shell.

[0016] Compared with the prior art, the utility model has the beneficial effects of:

[0017] In the scheme of the application:

[0018] 1. By setting the double cross arm and transmission assembly, when it is needed to transfer the user sitting on the wheelchair to other bed, the transmission assembly is started to drive the dynamic support assembly to rotate downwardly, so that it is in the horizontal state, the double cross arm is used to adjust the seat plate and the dynamic support assembly to the required height, so that the staff can more conveniently transfer the user on the wheelchair to other bed, and flexible conversion from the wheelchair to the bed is realized, not only the comfort and convenience of the wheelchair are improved, but also the process of transferring the user from the wheelchair to the bed is simplified, potential risks and inconvenience are reduced, and the problem of lacking necessary adjustment and conversion function of the wheelchair in the prior art is solved.

[0019] 2. By setting the armrest assembly, when the user converts the wheelchair into the bed, the armrest assembly can be converted into the guardrail, so that the problem that when the user converts the wheelchair into the bed for rest, due to the small space, the user is easy to fall off the wheelchair is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic view of the folding electric wheelchair is provided for the application;

[0021] Figure 2 The structure schematic view of the armrest assembly in the folding electric wheelchair is provided for the application;

[0022] Figure 3 The structure schematic view of the transmission assembly in the folding electric wheelchair is provided for the application;

[0023] Figure 4 The structure schematic view of the telescopic assembly in the folding electric wheelchair is provided for the application;

[0024] Figure 5 The structure schematic view of the double cross arm and the moving assembly in the folding electric wheelchair is provided for the application.

[0025] Indicated in the drawing:

[0026] 1, seat plate; 10, support frame; 11, fixed plate; 12, drive wheel; 13, footboard; 14, fixed plate; 15, control panel; 16, moving assembly;

[0027] 2, dynamic support assembly; 21, backrest; 22, fixed shell; 23, protection shell;

[0028] 3, armrest assembly; 31, No. 1 fixed rod; 32, No. 2 fixed rod; 33, armrest; 34, No. 1 motor; 35, No. 1 speed reducer; 36, mounting shaft;

[0029] 4, movable backrest; 41, movable plate; 42, hinged frame;

[0030] 5, telescopic assembly; 51, sliding frame; 52, movable slot; 53, clamping slot; 54, sliding rod; 55, inclined slot; 56, torsional spring; 57, clamping column;

[0031] 6, transmission assembly; 61, connecting plate; 62, first gear; 63, second gear; 64, third gear; 65, transmission shaft; 66, mounting plate; 67, second motor; 68, second speed reducer;

[0032] 7, extension assembly; 71, extension plate; 72, adjusting plate; 73, fixed shaft; 74, fixed disc; 75, threaded hole; 76, hand bolt;

[0033] 9, double cross arm; 91, first hinged rod; 92, second hinged rod; 93, third hinged rod; 94, fourth hinged rod; 95, mounting rod; 96, support plate; 97, first sliding groove; 98, sliding plate; 99, second sliding groove; 910, connecting shaft; 911, first telescopic rod; 912, second telescopic rod. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts should belong to the scope of protection of the present application.

[0035] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts should belong to the scope of protection of the present application.

[0036] It should be noted that the embodiments in the present application and the features and technical schemes in the embodiments can be combined with each other without conflict.

[0037] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] Embodiment 1

[0039] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4And Figure 5 The utility model discloses a folding electric wheelchair, which comprises a seat plate 1, a support frame 10 fixedly arranged at the bottom end of the seat plate 1, a fixed plate 11 arranged below the support frame 10, a fixed connection plate 14 fixedly arranged at the front end of the fixed plate 11, a foot pad 13 arranged below the front end of the fixed connection plate 14, a battery and a controller arranged at the bottom end of the fixed plate 11, a driving wheel 12 arranged at each corner of the bottom end of the fixed plate 11, the driving wheel 12 being electrically connected to the battery through the controller, the wheelchair being moved through the driving wheel 12, a lifting device arranged between the support frame 10 and the fixed plate 11, the lifting device comprising a double-cross arm 9 and a driving piece, a moving assembly 16 arranged in the double-cross arm 9, an extension assembly 7 arranged at the front end of the double-cross arm 9, a transmission assembly 6 arranged at the rear end of the seat plate 1, a movable support assembly 2 arranged at the top end of the transmission assembly 6, the movable support assembly 2 being used for supporting the back of a user and realizing movement in cooperation with the transmission assembly 6, the transmission assembly 6 enabling the seat plate 1 and the movable support assembly 2 to be 180°, a handrail assembly 3 arranged at the two sides of the movable support assembly 2, the handrail assembly 3 being used for driving a handrail 33 to rotate, so as to adjust the angle of the handrail 33, the two handrail assemblies 3 being symmetrically arranged, the two handrail assemblies 3 being capable of being controlled independently, a movable backrest 4 arranged at the top end of the movable support assembly 2, and a telescopic assembly 5 arranged at the rear end of the extension assembly 7 and the bottom end of the movable backrest 4.

[0040] Further, as shown in Figure 1 、 Figure 2 and Figure 3 , the transmission assembly 6 comprises a protective shell 23 fixed at the rear end of the support frame 10, two mounting plates 66 fixedly arranged in the protective shell 23 and located at the two sides of the support frame 10, a third gear wheel 64 rotatably arranged at the end of the two mounting plates 66 away from the support frame 10, a second gear wheel 63 rotatably arranged at the upper side of the third gear wheel 64 and connected to the two mounting plates 66, a first gear wheel 62 rotatably arranged at the top end of the second gear wheel 63 and connected to the two mounting plates 66, and a connecting plate 61 fixedly arranged at the top end of the first gear wheel 62, when the transmission shaft 65 rotates, the second gear wheel 63 and the first gear wheel 62 are driven to rotate through the third gear wheel 64, so as to control the angle of the movable support assembly 2, a second motor 67 fixedly arranged in the support frame 10, and a second speed reducer 68 arranged at the output end of the second motor 67 and in transmission connection with the transmission shaft 65, the second speed reducer 68 being fixedly connected to the support frame 10 and the seat plate 1.

[0041] Further, as shown in Figure 1 、 Figure 2 and Figure 3As shown, the movable support assembly 2 comprises a backrest 21 fixed between the two connecting plates 61, and a fixed shell 22 is fixed to the rear end of the backrest 21. The handrail assembly 3 comprises a first fixed rod 31 arranged above the connecting plates 61, and a second fixed rod 32 is hingedly arranged at the front end of the first fixed rod 31. The end of one of the second fixed rods 32 is provided with a control panel 15, and the control panel 15 is electrically connected to the battery and the drive wheel 12 through the controller. The wheelchair is moved by controlling the control panel 15 and the controller drive wheel 12. The top end of the second fixed rod 32 is fixedly provided with a handrail 33. The side of the first fixed rod 31 close to the movable backrest 4 is provided with a first motor 34 fixedly connected to the rear end of the backrest 21. The first motor 34 is started to drive the mounting shaft 36 to rotate through the first speed reducer 35, so as to control the angle of the first fixed rod 31, the second fixed rod 32 and the handrail 33. The side of the first fixed rod 31 close to the movable backrest 4 is fixedly provided with a mounting shaft 36, and the mounting shaft 36 is drivingly connected to the output end of the first motor 34 through the first speed reducer 35.

[0042] Embodiment 2

[0043] The folding electric wheelchair provided in embodiment 1 is further optimized, and specifically, as shown in Figure 1 、 Figure 3 and Figure 5 , the double cross arm 9 comprises two sliding plates 98 slidingly connected to the bottom end of the support frame 10, and the bottom end of the sliding plate 98 is provided with a second sliding groove 99. Two support plates 96 are fixedly arranged at the top end of the fixed plate 11, and a first sliding groove 97 is arranged on the support plate 96. An installation rod 95 is slidingly arranged in the two first sliding grooves 97. A first hinged rod 91 is hingedly arranged on the rear support plate 96. A second hinged rod 92 is fixedly arranged at the two ends of the installation rod 95 and hingedly arranged at the middle of the first hinged rod 91. A third hinged rod 93 is hingedly arranged at the end of the second hinged rod 92. The other end of the third hinged rod 93 is slidingly connected to the inside of the second sliding groove 99 through a sliding column. The end of the first hinged rod 91 is hingedly arranged with a fourth hinged rod 94 hingedly arranged at the middle of the third hinged rod 93. The end of the fourth hinged rod 94 is hingedly arranged at the rear end of the bottom end of the sliding plate 98. The drive member comprises a second telescopic rod 912 hingedly arranged at the middle of the installation rod 95. The second telescopic rod 912 can be an electric telescopic rod, a pneumatic telescopic rod or a hydraulic telescopic rod. The end of the second telescopic rod 912 is fixedly connected to the fixed plate 11. The second telescopic rod 912 is extended and retracted to drive the double cross arm 9 to extend and retract through the installation rod 95, so as to control the lifting of the support frame 10 and the seat plate 1.

[0044] Further, as shown in Figure 3 and Figure 5As shown, the moving assembly 16 comprises a connecting shaft 910 rotatably connected between the two sliding plates 98, and a first telescopic rod 911 fixed on the connecting shaft 910, the end of the first telescopic rod 911 is hingedly connected to the bottom end of the support frame 10, and the support frame 10 and the seat plate 1 are moved on the sliding plates 98 by starting the first telescopic rod 911 to extend or retract.

[0045] Embodiment 3

[0046] The folding electric wheelchair provided in Embodiment 1 and Embodiment 2 is further optimized, as shown in Figure 1 、 Figure 3 and Figure 4 As shown, the extending assembly 7 comprises a fixed shaft 73 located at the front end of the support frame 10, and a fixed disc 74 is fixed on both ends of the fixed shaft 73, four threaded holes 75 are formed on the side of the fixed disc 74 away from the fixed shaft 73 and equidistantly surround the center of the fixed disc 74, an adjusting plate 72 is rotatably arranged on the side of the fixed disc 74 away from the fixed shaft 73, and the top ends of the two adjusting plates 72 are fixed with the same extending plate 71, the extending plate 71 is used to extend the length of the seat plate 1, and a hand screw 76 is arranged on the side of the adjusting plate 72 away from the fixed shaft 73, the hand screw 76 is used to control the angle of the extending plate 71 through the threaded hole 75, the end of the hand screw 76 extends to the inside of the threaded hole 75 through the adjusting plate 72, and the hand screw 76 is threadedly connected with the adjusting plate 72, when it is necessary to adjust the angle of the extending plate 71, the hand screw 76 is rotated to be separated from the inside of the threaded hole 75, so that the extending plate 71 can move freely, the extending plate 71 is rotated to the position of the other fixed disc 74, and then the end of the hand screw 76 is clamped in the inside of the threaded hole 75.

[0047] Further, as shown in Figure 1 and Figure 2 The movable backrest 4 comprises a movable plate 41 located at the top end of the backrest 21, the movable plate 41 is used to support the head of the user, and a hinged frame 42 is hingedly arranged at the rear end of the movable plate 41, when it is necessary to adjust the angle of the movable plate 41, the movable plate 41 is rotated to control the angle of the movable plate 41 through the hinge with the hinged frame 42, and then the angle is fixed through the friction force.

[0048] Further, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the telescopic assembly 5 comprises a sliding frame 51, the two sides of the sliding frame 51 are provided with movable grooves 52, the top end of the movable groove 52 is provided with a plurality of upwardly inclined clamping grooves 53, the inside of the sliding frame 51 is slidably provided with a sliding rod 54, the two sides of the sliding rod 54 are provided with upwardly inclined inclined grooves 55, the inside of the sliding rod 54 is provided with a torsion spring 56, one end of the torsion spring 56 is fixedly provided with a clamping column 57, the clamping column 57 is located in the inside of the inclined groove 55, when it is needed to lengthen the telescopic assembly 5, the sliding rod 54 is pushed backward to make the clamping column 57 retract through the inclined surface in the inside of the inclined groove 55 to drive the torsion spring 56 to retract to the bottom end of the inclined groove 55, the inside of the movable groove 52 is located behind, the sliding rod 54 is quickly pulled to make the movable groove 52 quickly move forward, the clamping column 57 cannot quickly enter the inside of the clamping groove 53 and quickly move forward, when it is moved to the required position, it is stopped, the clamping column 57 is clamped in the inside of the corresponding clamping groove 53 through the elastic force of the torsion spring 56, when it is needed to shorten the length of the sliding rod 54, the sliding rod 54 is pushed back to make the clamping column 57 retract through the inclination of the clamping groove 53 and the inclined groove 55, and the length of the telescopic assembly 5 can be shortened;

[0049] One of the sliding frames 51 is fixedly arranged in the inside of the support frame 10, the front end of the sliding rod 54 located at the bottom end of the support frame 10 is fixedly connected with the fixed shaft 73, so that the extension assembly 7 has the forward and backward telescopic function;

[0050] The other sliding frame 51 is fixedly arranged at the rear end of the backrest 21, the top end of the sliding rod 54 located at the rear end of the backrest 21 is hingedly connected with the hinge frame 42 through the fixed shell 22, so that the movable backrest 4 has the upward and downward telescopic function.

[0051] The use process of the folding electric wheelchair is as follows:

[0052] When it is needed to transfer the user to the bed, the second motor 67 is started to drive the transmission shaft 65 to rotate through the second speed reducer 68, the third gear 64 drives the connecting plate 61 and the movable support assembly 2 to overturn downwardly rearward through the second gear 63 and the first gear 62, so that the connecting plate 61 and the movable support assembly 2 are located at the same horizontal position as the seat plate 1, then the connecting shaft 910 is started to be telescopic to drive the double cross arms 9 to lift, the seat plate 1 and the movable support assembly 2 are adjusted to the required height, then the first motor 34 on the side close to the bed is started to drive the first fixed rod 31 to rotate through the mounting shaft 36, so that the first fixed rod 31 does not block the user to transfer to the side of the bed, so that the user only needs to turn over to the bed, or the user is directly transferred to the bed in cooperation with the nursing staff, so that the process of transferring the user from the wheelchair to the bed is simplified, and the potential risk and inconvenience are reduced;

[0053] When the wheelchair needs to be used as a bed, the second motor 67 is started to make the connecting plate 61 and the movable support assembly 2 flip backward and downward to the same level as the seat plate 1, and then the handrail assembly 3 is used as a guardrail of the bed by flipping the second fixed rod 32 through the hinge with the first fixed rod 31, so that the vertical second fixed rod 32 is flipped 90° to a horizontal angle, thereby converting the wheelchair into a bed for the user to rest;

[0054] When the user drives the wheelchair on an uphill road, the first telescopic rod 911 is started to extend to drive the support frame 10 to slide on the two sliding plates 98, so that the center of the user on the seat plate 1 is close to the front, preventing the user from falling backward due to instability of the center of gravity; when driving on a downhill road, the first telescopic rod 911 is started to shorten, so that the center of the user is close to the back, thereby better controlling the center of gravity of the wheelchair, helping to maintain the stability and balance of the wheelchair on the inclined road, and reducing the risk of rollover or loss of control.

[0055] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for part of the technical features. Any equivalent structure made by using the contents of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A folding electrically powered wheelchair characterised in that, The utility model provides a kind of chair, including seat plate (1), the bottom end of the seat plate (1) is fixedly provided with support frame (10), the lower of the support frame (10) is provided with fixed plate (11), lifting device is provided between the support frame (10) and fixed plate (11), the lifting device includes double cross arm (9) and driving piece, the inside of the double cross arm (9) is provided with moving assembly (16), the front end of the double cross arm (9) is provided with extension assembly (7), the rear end of the seat plate (1) is provided with transmission assembly (6), the top of the transmission assembly (6) is provided with dynamic support assembly (2), the transmission assembly (6) can make seat plate (1) and dynamic support assembly (2) 180 °, the both sides of the dynamic support assembly (2) are provided with handrail assembly (3), two the handrail assembly (3) is symmetrically provided, two the handrail assembly (3) can be controlled separately, the top of the dynamic support assembly (2) is provided with movable backrest (4), the rear end of the extension assembly (7) and the bottom of the movable backrest (4) are provided with telescopic assembly (5).

2. The folding electric wheelchair according to claim 1, characterized in that The transmission assembly (6) includes the protection shell (23) fixed to the rear end of the support frame (10), the inside of the protection shell (23) is fixedly provided with two installation plates (66) located on the both sides of the support frame (10), one end of the two installation plates (66) away from the support frame (10) is rotatably provided with a No. three gear (64), the upper side of the No. two gear (63) is rotatably provided with a No. two gear (63) connected with the installation plate (66), the top of the No. two gear (63) is rotatably provided with a No. one gear (62) connected with the installation plate (66), the top of the No. one gear (62) is fixedly provided with a connecting plate (61), the inside of the support frame (10) is fixedly provided with a No. two motor (67), the output end of the No. two motor (67) is drivingly connected with a transmission shaft (65) through a No. two speed reducer (68).

3. The folding electric wheelchair according to claim 2, characterized in that The dynamic support assembly (2) includes the back plate (21) fixed between the two connecting plates (61), the rear end of the back plate (21) is fixedly provided with a fixed shell (22), the handrail assembly (3) includes a No. one fixed rod (31) provided above the connecting plate (61), the front end of the No. one fixed rod (31) is hingedly provided with a No. two fixed rod (32), the top of the No. two fixed rod (32) is fixedly provided with a handrail (33), the side of the No. one fixed rod (31) close to the movable backrest (4) is provided with a No. one motor (34) fixedly connected with the rear end of the back plate (21), the side of the No. one fixed rod (31) close to the movable backrest (4) is fixedly provided with a mounting shaft (36), the mounting shaft (36) passes through the fixed shell (22) and is drivingly connected with the output end of the No. one motor (34) through a No. one speed reducer (35).

4. The folding electric wheelchair according to claim 3, wherein The double cross arm (9) comprises two sliding plates (98) slidably connected to the bottom end of the support frame (10), the bottom end of the sliding plate (98) is provided with a second sliding groove (99), the top end of the fixed plate (11) is fixedly provided with two support plates (96) on both sides, the support plate (96) is provided with a first sliding groove (97), the same mounting rod (95) is slidably arranged in the two first sliding grooves (97), the support plate (96) at the rear end is hingedly provided with a first hinge rod (91), the two ends of the mounting rod (95) are fixedly provided with a second hinge rod (92) hingedly connected to the middle of the first hinge rod (91), the end of the second hinge rod (92) is hingedly provided with a third hinge rod (93), the other end of the third hinge rod (93) is slidably connected with the inside of the second sliding groove (99), the end of the first hinge rod (91) is hingedly provided with a fourth hinge rod (94) hingedly connected to the middle of the third hinge rod (93), the end of the fourth hinge rod (94) is hingedly connected to the rear end of the sliding plate (98), the driving part comprises a second telescopic rod (912) hingedly connected to the middle of the mounting rod (95), and the end of the second telescopic rod (912) is fixedly connected with the fixed plate (11).

5. The folding electric wheelchair according to claim 4, characterized in that The moving assembly (16) comprises a connecting shaft (910) rotatably connected between the two sliding plates (98), and a first telescopic rod (911) is fixedly arranged on the connecting shaft (910).

6. The folding electric wheelchair according to claim 5, characterized in that The extension assembly (7) comprises a fixed shaft (73) located at the front end of the support frame (10), two fixed discs (74) are fixedly arranged at the two ends of the fixed shaft (73), four threaded holes (75) are arranged on one side of the fixed disc (74) away from the fixed shaft (73) and equidistantly around the center of the fixed disc (74), an adjusting plate (72) is rotatably arranged on the side of the fixed disc (74) away from the fixed shaft (73), and the top ends of the two adjusting plates (72) are fixedly provided with the same extension plate (71).

7. The folding electric wheelchair according to claim 6, characterized in that The movable backrest (4) comprises a movable plate (41) located at the top end of the backrest plate (21), and a hinge frame (42) is hingedly arranged at the rear end of the movable plate (41).

8. The folding electric wheelchair of claim 7, wherein, The telescopic assembly (5) comprises a sliding frame (51), and the two sides of the sliding frame (51) are provided with movable grooves (52). One of the slide frames (51) is fixed to the inside of the support frame (10), and the front end of the slide rod (54) at the bottom end of the support frame (10) is fixedly connected with the fixed shaft (73); The other slide frame (51) is fixed to the rear end of the backrest (21), and the top end of the slide rod (54) at the rear end of the backrest (21) penetrates the fixed shell (22) and is hingedly connected with the hinge frame (42).

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