Electric folding wheelchair

Abstract

The utility model provides an electric folding wheelchair which comprises a seat, a chassis and a folding device, and the seat comprises a cushion, a backrest and a connecting assembly used for connecting the cushion and the backrest; the folding device comprises a folding assembly and a folding driving unit, the folding driving unit is installed on the chassis, and the folding driving unit is used for driving the folding assembly to be unfolded or folded; the folding assembly comprises a supporting rod and a group of connecting plates; the connecting plates are arranged on the two sides of the supporting rod and rotationally connected with the supporting rod. The two ends of the connecting plate are connected with the cushion and the chassis respectively, and the two ends of the supporting rod are connected with the connecting assembly and the folding driving unit respectively. The electric folding wheelchair is simple and clear in structure, the folding and unfolding process is very stable and smooth, the production and manufacturing cost of an enterprise is reduced, and meanwhile the later use and maintenance cost of a user is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding wheelchair, in particular to a kind of electric folding wheelchair. BACKGROUND

[0002] Although the traditional electric wheelchair provides the convenience of electric drive, its huge volume and weight make carrying and storage difficult, so in recent years, the electric folding wheelchair develops very rapidly.Currently, although the electric folding wheelchair on the market has been popular, the structure is generally complex, not only the manufacturing cost is high, but also the maintenance cost is high in later period, which does not meet the concept of reducing cost and increasing efficiency of enterprise.Therefore, there is an urgent need for an electric folding wheelchair with clear and simple structure, easy to manufacture and maintain in the market. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an electric folding wheelchair, which has a simple and clear structure, greatly reduces the production and manufacturing cost of enterprises, and also reduces the use and maintenance cost of users.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides the following technical scheme:

[0005] An electric folding wheelchair comprises a seat, a chassis and a folding device, the seat comprises a seat cushion, a backrest and a connecting assembly for connecting the seat cushion and the backrest, the folding device comprises a folding assembly and a folding drive unit, the folding drive unit is installed on the chassis, and the folding drive unit is used to drive the folding assembly to unfold or fold, the folding assembly comprises a support rod and a set of connecting plates, the connecting plates are arranged on both sides of the support rod and are rotatably connected with the support rod, both ends of the connecting plates are connected with the seat cushion and the chassis respectively, and both ends of the support rod are connected with the connecting assembly and the folding drive unit respectively.

[0006] Further, a sliding groove is formed on the side of the connecting plate facing the support rod, the folding assembly comprises a rotating shaft, the rotating shaft penetrates through the support rod, and both ends of the rotating shaft extend into the sliding groove and are slidably connected with the sliding groove.

[0007] Further, the support rod comprises a support rod body and an extension part, and the connecting plate is rotatably connected with the support rod body, and both ends of the extension part are rotatably connected with the seat cushion and the support rod body respectively.

[0008] Further, the support rod body comprises an upper connecting part and a lower connecting part which are fixedly connected, the upper connecting part is connected with the connecting assembly, and the lower connecting part is rotatably connected with the folding drive unit.

[0009] Further, the connecting assembly comprises a linkage rod and a set of mounting plates; the mounting plates are arranged on both sides of the linkage rod, and both ends of the mounting plates are respectively mounted on the seat cushion and the backrest; one end of the linkage rod is mounted on the backrest, and the other end is inwardly bent and rotatably connected with the upper connecting part.

[0010] Further, the bottom plate is provided with a first accommodating cavity on the side away from the seat; the folding driving unit comprises a telescopic cylinder, and the telescopic cylinder is mounted in the first accommodating cavity; the lower connecting part penetrates through the bottom plate and extends into the first accommodating cavity and is rotatably connected with the output end of the telescopic cylinder.

[0011] Further, the bottom plate is provided with a first accommodating cavity on the side away from the seat; the folding driving unit comprises a telescopic cylinder, and the telescopic cylinder is mounted in the first accommodating cavity; the lower connecting part penetrates through the bottom plate and extends into the first accommodating cavity and is rotatably connected with the output end of the telescopic cylinder.

[0012] Further, the bottom plate is provided with a first accommodating cavity on the side away from the seat; the folding driving unit comprises a telescopic cylinder, and the telescopic cylinder is mounted in the first accommodating cavity; the lower connecting part penetrates through the bottom plate and extends into the first accommodating cavity and is rotatably connected with the output end of the telescopic cylinder.

[0013] Further, the moving device comprises a pair of universal wheels and a pair of driven wheels.

[0014] As described above, the electric folding wheelchair has the following beneficial effects:

[0015] 1、The folding assembly in the utility model has simple and clear structure, which not only greatly reduces the production cost, but also reduces the cost of later use and maintenance of consumers while ensuring the smooth folding and unfolding of the wheelchair.

[0016] 2、The connecting points between the folding driving unit and part of the structure are placed in the first accommodating cavity below the bottom plate, so that the height of the wheelchair after folding is reduced, the space occupied after folding is reduced, and better storage is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure schematic view of the electric folding wheelchair in the utility model is shown.

[0018] Figure 2 A structure schematic view of the folding assembly in the utility model is shown.

[0019] Figure 3 An assembly schematic view of the folding assembly and the seat in the utility model is shown.

[0020] Figure 4 A structure schematic view of the electric folding wheelchair in another view in the utility model is shown.

[0021] Figure 5 A structure schematic view of the electric folding wheelchair in another view in the utility model is shown. Figure 4An enlarged schematic view of part A.

[0022] Figure 6 A structure schematic view of another perspective of the electric folding wheelchair in the utility model.

[0023] 1, seat; 11, seat cushion; 12, backrest; 13, connecting assembly; 131, linkage rod; 132, mounting plate; 2, chassis; 21, first accommodating cavity; 22, battery accommodating cavity; 23, power battery; 24, second accommodating cavity; 3, folding device; 31, folding assembly; 311, support rod; 3111, support rod body; 31111, upper connecting portion; 31112, lower connecting portion; 3112, extension portion; 312, connecting plate; 3121, sliding groove; 313, rotating shaft; 32, telescopic cylinder; 4, moving device; 41, universal wheel; 42, driven wheel; 5, control system; 51, controller; 52, control panel; 1000, electric folding wheelchair. DETAILED DESCRIPTION

[0024] The following specific embodiments illustrate the implementation of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.

[0025] Please refer to Figures 1-6 It is understood that the structure, proportion, size, etc. shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions that the utility model can be implemented, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that the utility model can produce, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model that can be implemented, the change or adjustment of the relative relationship, without changing the technical content, is also regarded as the scope of the utility model that can be implemented.

[0026] Please refer to Figures 1 to 6 The utility model provides an electric folding wheelchair 1000, including seat 1, chassis 2 and folding device 3, wherein, seat 1 includes seat cushion 11, backrest 12 and the connecting assembly 13 for connecting seat cushion 11 with backrest 12;Folding device 3 includes folding assembly 31 and the folding drive unit of drive folding assembly 31 unfolds or folds, and the folding drive unit is installed on chassis 2.

[0027] Specifically, the folding assembly 31 comprises a support rod 311 and a set of connecting plates 312, both ends of the support rod 311 are connected with the connecting assembly 13 and the folding driving unit respectively; the connecting plates 312 are located on both sides of the support rod 311 and are rotatably connected with the support rod 311 respectively, both ends of the connecting plates 312 are connected with the cushion 11 and the bottom plate 2 respectively.

[0028] Further, the connecting plate 312 is provided with a synchronous rod at one end close to the cushion 11, so as to ensure that the connecting plates 312 maintain synchronous rotation between each other and improve the stability of the folding assembly 31 during unfolding or folding.

[0029] Through the arrangement of the folding assembly 31, the unfolding and folding of the folding assembly 31 can be realized. The structure of the folding assembly 31 is clear and simple, and the folding and unfolding are also very stable. Under the premise of ensuring the folding function, the production cost and the use cost are reduced.

[0030] Please refer to Figure 2 , the folding assembly 31 comprises a rotating shaft 313.

[0031] Specifically, the side of the connecting plate 312 facing the support rod 311 is provided with a sliding groove 3121; the rotating shaft 313 penetrates the support rod 311 along the horizontal direction and extends to the sliding groove 3121 at both ends and is slidably connected with the sliding groove 3121.

[0032] The rotating shaft 313 is used to realize the rotatable connection between the support rod 311 and the connecting plate 312. When the folding assembly 31 is folded and unfolded, due to the difference in the shaft center between the connecting plate 312 and the support rod 311, a certain displacement will be generated between the two. At this time, the sliding groove 3121 can allow the both ends of the rotating shaft 313 to displace to a certain extent in the sliding groove 3121, and the sliding groove 3121 also plays a certain guiding role, so that the folding assembly 31 is more stable and smooth during unfolding or folding.

[0033] Please continue to refer to 2, the support rod 311 comprises a support rod body 3111 and an extension part 3112.

[0034] Specifically, the connecting plate 312 is rotatably connected with the support rod body 3111; both ends of the extension part 3112 are connected with the cushion 11 and the support rod body 3111 respectively. When the folding assembly 31 is folded, the extension part 3112 moves together with the support rod body 3111 to pull down the cushion 11; when the folding assembly 31 is unfolded, the extension assembly is used to assist the cushion 11 to rise and limit the rising height of the cushion 11.

[0035] Please refer to Figure 3 , the connecting assembly 13 comprises a linkage rod 131 and a set of mounting plates 132.

[0036] Specifically, the mounting plate 132 is located on both sides of the linkage rod 131, and the two ends are connected to the seat 1 and the cushion 11 respectively; one end of the linkage rod 131 is installed on the backrest 12, and the other end is rotatably connected to the support rod 311.

[0037] Through the rotatable connection of the linkage rod 131 and the support rod 311, when the folding driving unit drives the support rod 311, it can drive the linkage rod 131 to rotate, and then drive the backrest 12 to rotate by the linkage rod 131, and fold inward, so as to realize folding and further reduce the volume of the folded wheelchair. Similarly, when the wheelchair is unfolded, the backrest 12 is folded in the opposite direction to open the seat 1.

[0038] Please continue to refer to Figures 3 to 5 , the support rod body 3111 includes an upper connecting portion 31111 and a lower connecting portion 31112.

[0039] Specifically, the upper connecting portion 31111 and the lower connecting portion 31112 are fixedly connected to each other, the upper connecting portion 31111 is connected to the linkage rod 131, and the lower connecting portion 31112 is hingedly connected to the folding driving unit.

[0040] In an alternative embodiment, the folding driving unit is a telescopic cylinder 32, and the output end of the telescopic cylinder 32 is hingedly connected to the lower connecting portion 31112. Through the telescopic movement of the output end, the support rod 311 is driven to rotate clockwise or counterclockwise, thereby realizing the unfolding or folding of the folding assembly 31.

[0041] Please continue to refer to Figure 6 , the chassis 2 includes a first accommodating cavity 21 and a second accommodating cavity 24.

[0042] Specifically, the first accommodating cavity 21 is arranged on the side of the chassis 2 away from the seat 1, the telescopic cylinder 32 is installed in the first accommodating cavity 21, the lower connecting portion 31112 penetrates the chassis 2 and extends into the first accommodating cavity 21, and is hingedly connected to the output end of the telescopic cylinder 32. The second accommodating cavity 24 is arranged on the side of the chassis 2 facing the seat 1, and is used for accommodating the folded folding assembly 31.

[0043] The telescopic cylinder 32 is arranged in the first accommodating cavity 21, which reduces the space occupation of the second accommodating cavity 24, and the folding assembly 31 can be accommodated in the second accommodating cavity 24 more, so that the folded wheelchair is more flat and easy to store.

[0044] Please continue to refer to Figure 6 , the side of the chassis 2 facing the seat 1 is also provided with a battery accommodating cavity 22.

[0045] Specifically, the battery accommodating cavity 22 is used for accommodating the power battery 23. The outer peripheral surface of the chassis 2 is further provided with the moving device 4, and the moving device 4 and the power battery 23 are electrically connected, and the power battery 23 is used for driving the telescopic air cylinder 32 and the moving device 4.

[0046] Further, the moving device 4 comprises a pair of universal wheels 41 and a pair of driven wheels 42.

[0047] In addition, it needs to be explained that the electric folding wheelchair 1000 provided by the utility model further comprises a control system 5. The control system 5 comprises a controller 51 and a control panel 52 installed on the seat 1, the controller 51 is installed in the battery accommodating cavity 22, and the controller 51 is electrically connected with the control panel 52.

[0048] The implementation principle of the electric folding wheelchair 1000 in the utility model is as follows: when the wheelchair needs to be folded, the output end of the telescopic air cylinder 32 driven by the power battery 23 is pushed outwards, and the supporting rod 311 is driven to rotate downwards; at the same time, due to the connecting relationship between the supporting rod 311, the connecting plate 312 and the linkage rod 131, the connecting plate 312 is also driven to move downwards, and the linkage rod 131 drives the backrest 12 to be close to the cushion 11, and the extension part 3112 assists the connecting plate 312 to pull the cushion 11 downwards, until the supporting rod 311 moves to a fixed angle, and the whole folding assembly 31 can be accommodated in the second accommodating cavity 24 mostly. When the wheelchair needs to be unfolded, the output end of the telescopic air cylinder 32 driven by the power battery 23 is retracted inwards, and the supporting rod 311 is driven to move upwards, and the connecting plate 312 is also driven to move upwards, the extension part 3112 assists the connecting part to lift the cushion 11, and the linkage rod 131 pulls the backrest 12 upwards, and finally the whole wheelchair is unfolded.

[0049] The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used for limiting the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. An electric folding wheelchair, characterized in that, comprising a seat (1), a chassis (2) and a folding device (3), the seat (1) comprising a seat cushion (11), a backrest (12) and a connecting assembly (13) for connecting the seat cushion (11) and the backrest (12); the folding device (3) comprising a folding assembly (31) and a folding drive unit; the folding drive unit is installed on the chassis (2), and the folding drive unit is used to drive the folding assembly (31) to unfold or fold; the folding assembly (31) is located between the chassis (2) and the seat (1), and the folding assembly (31) comprises a support rod (311) and a set of connecting plates (312); the connecting plates (312) are arranged on both sides of the support rod (311) and are rotatably connected with the support rod (311); both ends of the connecting plate (312) are connected with the seat cushion (11) and the chassis (2) respectively, and both ends of the support rod (311) are connected with the connecting assembly (13) and the folding drive unit respectively.

2. The electric folding wheelchair according to claim 1, characterized in that, A sliding groove (3121) is formed on one side of the connecting plate (312) facing the support rod (311); the folding assembly (31) comprises a rotating shaft (313), the rotating shaft (313) penetrates the support rod (311) along the horizontal direction, and both ends extend into the sliding groove (3121) and are slidably connected with the sliding groove (3121).

3. The electric folding wheelchair according to claim 2, wherein, The support rod (311) comprises a support rod body (3111) and an extension part (3112), and the connecting plate (312) is rotatably connected with the support rod body (3111); both ends of the extension part (3112) are rotatably connected with the seat cushion (11) and the support rod body (3111) respectively.

4. The electric folding wheelchair according to claim 3, wherein, The support rod body (3111) comprises a fixedly connected upper connecting part (31111) and a lower connecting part (31112); the upper connecting part (31111) is connected with the connecting assembly (13); the lower connecting part (31112) is rotatably connected with the folding drive unit.

5. The electrically folding wheelchair of claim 4, wherein, The connecting assembly (13) comprises a linkage rod (131) and a set of mounting plates (132); the mounting plates (132) are arranged on both sides of the linkage rod, and both ends thereof are mounted on the seat cushion (11) and the backrest (12) respectively; one end of the linkage rod (131) is mounted on the backrest (12), and the other end is inwardly bent and rotatably connected with the upper connecting part (31111).

6. The power folding wheelchair of claim 4, wherein, A first accommodating cavity (21) is arranged on the side of the chassis (2) away from the seat (1); the folding drive unit comprises a telescopic cylinder (32), and the telescopic cylinder (32) is installed in the first accommodating cavity (21); the lower connecting part (31112) penetrates the chassis (2) and extends into the first accommodating cavity (21) and is rotatably connected with the output end of the telescopic cylinder (32).

7. The power folding wheelchair of claim 1, wherein, The bottom plate (2) is provided with a moving device (4); the side of the bottom plate (2) facing the seat (1) is further provided with a battery accommodating cavity (22) for accommodating a power battery (23); the power battery (23) is used for driving the moving device (4) and a folding driving unit.

8. The power folding wheelchair of claim 7, wherein, A control system (5) is further included, the control system (5) comprising a controller (51) and a control panel (52) installed on the seat (1); the controller (51) is installed in the battery accommodating cavity (22) and is in electrical signal connection with the control panel (52).

9. The power folding wheelchair of claim 7, wherein, The moving device (4) comprises a pair of universal wheels (41) and a pair of driven wheels (42).

Images