Electric wheelchair

Abstract

The utility model provides an electric wheelchair, which comprises an unfolded state and a folded state, and comprises a front end roller, a rear end roller and a rear end roller, in the unfolded state, armrest assemblies are symmetrically arranged on the two sides of the seat assembly; one end of the first connecting rod is rotationally connected with the front-end roller, and the other end of the first connecting rod is rotationally connected with the handrail assembly; the rear-end roller is connected with the front-end roller through the bottom plate; one end of the second connecting rod is rotationally connected with the rear end roller, and the other end of the second connecting rod is rotationally connected with the seat assembly; when the electric wheelchair is changed from the unfolded state to the folded state, the first connecting rod rotates to be close to the bottom plate, and the second connecting rod rotates to be close to the bottom plate.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, and in particular to an electric wheelchair. Background Art

[0002] With the development of technology, the flattening of urban roads and sidewalks, and the leveling of indoor floors, wheelchairs have become the choice of more people for people with inconvenient legs and feet. Among them, wheelchairs have been widely used by special people. Wheelchairs are also divided into electric wheelchairs and manual wheelchairs. People who use manual wheelchairs usually need waiters to push them, so manual wheelchairs are more labor-intensive. With the development of science and technology today, electric wheelchairs have gradually replaced the status of manual wheelchairs with their unique advantages and have become the first choice for special people.

[0003] However, in the related art, it is difficult to achieve a certain lightweight design for electric wheelchairs due to the special structure and the presence of components such as motors. At the same time, with the stacking of redundant components, the foldability of the electric wheelchair is also a test. Therefore, the electric wheelchairs with folding function in the related art have a more complicated folding method, which is not friendly enough for special groups of people who use electric wheelchairs.

[0004] Therefore, how to simplify the conversion of the electric wheelchair from the use state to the folded state has become an urgent problem to be solved. Utility Model Content

[0005] The problem solved by the utility model is how to simplify the transformation mode of the electric wheelchair from the use state to the folding state.

[0006] To solve the above problems, the utility model provides an electric wheelchair, which includes an unfolded state and a folded state, and the electric wheelchair includes: a front roller; a seat assembly, in the unfolded state, armrest assemblies are symmetrically arranged on both sides of the seat assembly; a first connecting rod, one end of the first connecting rod is rotatably connected to the front roller, and the other end of the first connecting rod is rotatably connected to the armrest assembly; a rear roller, the rear roller is connected to the front roller through a base plate; a second connecting rod, one end of the second connecting rod is rotatably connected to the rear roller, and the other end of the second connecting rod is rotatably connected to the seat assembly; wherein, when the electric wheelchair changes from the unfolded state to the folded state, the first connecting rod rotates close to the base plate, and the second connecting rod rotates close to the base plate.

[0007] Compared with the prior art, the present invention can achieve the following effects: to transform the electric wheelchair from an unfolded state to a folded state, it is only necessary to rotate the first connecting rod to be flush with the bottom plate, and the armrest assembly is also rotated to the inner side of the first connecting rod and overlapped with the first connecting rod, and the second connecting rod is rotated toward the bottom plate to fit, and the seat assembly is rotated toward the second connecting rod to fit, so as to form an overall flat shape and complete the folding, and the folding process is simple and convenient.

[0008] In one embodiment of the utility model, the armrest assembly includes: a first armrest plate, which is rotatably connected to a first connecting rod; a second armrest plate, which is rotatably connected to the first armrest plate; wherein the second armrest plate is used to support the user's arm, and a Z-shaped fold is formed between the first armrest plate, the second armrest plate and the first connecting rod.

[0009] Compared with the prior art, the present solution can achieve the following effects: the first armrest plate is the main adjustment component in the armrest assembly, and the second armrest plate is the main component that provides the user with an arm placement portion, wherein the first armrest plate, the second armrest plate and the first connecting rod constitute a Z-shaped structure, the first armrest plate can be rotated and adjusted relative to the first connecting rod, and the second armrest plate can be rotated and adjusted relative to the first armrest plate. Therefore, the armrest assembly in this embodiment has a larger adjustable range, which meets the different armrest height requirements of users, and the handle height adjustment is more convenient.

[0010] In one embodiment of the utility model, the seat assembly includes: a seat cushion and a backrest, the seat cushion and the backrest are rotatably connected, the seat cushion and the second connecting rod are rotatably connected, and the seat cushion and the bottom plate are always kept parallel.

[0011] Compared with the prior art, the present solution can achieve the following effects: when the electric wheelchair is transformed from an unfolded state to a folded state, the backrest is rotated toward the seat cushion to fit, and the folding can be completed, which is more convenient.

[0012] In one embodiment of the present invention, the seat assembly further includes: a back plate, the back plate is fixedly connected to the backrest, and a hollow space is formed between the back plate and the backrest.

[0013] Compared with the prior art, the present solution can achieve the following effects: In a specific embodiment, the back plate is a parameterized buffer shell that can resist impact to a certain extent.

[0014] In one embodiment of the present invention, the back plate is provided with a plurality of openings arranged at intervals.

[0015] Compared with the prior art, the present solution can achieve the following effects: the setting of the openings enables the back panel to have a lighter setting while having better impact resistance.

[0016] In one embodiment of the utility model, the electric wheelchair further comprises: an auxiliary roller assembly, which is connected to the rear end roller.

[0017] Compared with the prior art, the present solution can achieve the following effects: the provision of the auxiliary rollers can effectively prevent the electric wheelchair from tipping over backwards.

[0018] In one embodiment of the utility model, the front roller further includes: a roller member, which is rotatably connected to the first connecting rod; and a mudguard shell, which is wrapped around the roller member and connected to the bottom plate.

[0019] Compared with the prior art, the present solution can achieve the following effects: the mud guard shell can effectively block the mud by the mud guard, thereby reducing the impact of the mud on the user's use.

[0020] In one embodiment of the utility model, the roller member includes a left end roller and a right end roller, and correspondingly, the mudguard shell includes a left end mudguard shell and a right end mudguard shell; wherein a footrest is sandwiched and connected between the left end mudguard shell and the right end mudguard shell.

[0021] Compared with the prior art, the present solution can achieve the following effect: In a specific embodiment, the footrest is a textured footrest with an anti-slip texture, which can effectively prevent the user from falling when getting on or off the vehicle.

[0022] In one embodiment of the utility model, the roller member includes: a wheel hub and a universal wheel, a plurality of universal wheels are provided, and the plurality of universal wheels are arranged around the wheel hub.

[0023] Compared with the prior art, the present solution can achieve the following effects: the universal wheel is provided to control the direction of travel of the electric wheelchair. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an electric wheelchair in an unfolded state;

[0025] Figure 2 is another structural schematic diagram of an electric wheelchair;

[0026] Figure 3 This is a front view of the electric wheelchair;

[0027] Figure 4 It is a rear view of the electric wheelchair;

[0028] Figure 5 is a schematic diagram of an electric wheelchair in an unfolded state in some embodiments;

[0029] Figure 6 is a schematic diagram of a folded state of an electric wheelchair in some embodiments;

[0030] Description of reference numerals:

[0031] 1. Electric wheelchair; 10. Front roller; 11. Roller member; 111. Left roller; 112. Right roller; 12. Mudguard; 121. Left mudguard; 122. Right mudguard; 20. Seat assembly; 21. Cushion; 22. Backrest; 23. Backboard; 24. Opening; 30. First connecting rod; 40. Second connecting rod; 50. Rear roller; 60. Bottom plate; 70. Armrest assembly; 71. First armrest board; 72. Second armrest board; 80. Auxiliary roller assembly; 81. Safety pin; 90. Battery; 91. Light strip; 100. Footrest; 110. Wheel hub; 120. Universal wheel; 130. Control assembly. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The utility model is further described in detail below with reference to the accompanying drawings:

[0037] Embodiment 1:

[0038] See also Figures 1 to 6 The present embodiment provides an electric wheelchair 1, which includes an unfolded state and a folded state. The electric wheelchair 1 includes: a front roller 10; a seat assembly 20, in the unfolded state, armrest assemblies 70 are symmetrically arranged on both sides of the seat assembly 20; a first connecting rod 30, one end of the first connecting rod 30 is rotatably connected to the front roller 10, and the other end of the first connecting rod 30 is rotatably connected to the armrest assembly 70; a rear roller 50, the rear roller 50 is connected to the front roller 10 through a bottom plate 60; a second connecting rod 40, one end of the second connecting rod 40 is rotatably connected to the rear roller 50, and the other end of the second connecting rod 40 is rotatably connected to the seat assembly 20; wherein, when the electric wheelchair 1 is changed from the unfolded state to the folded state, the first connecting rod 30 rotates close to the bottom plate 60, and the second connecting rod 40 rotates close to the bottom plate 60.

[0039] The electric wheelchair 1 in this embodiment has an unfolded state and a folded state. Figures 1 to 5 The figure shows the structure of the electric wheelchair 1 in a folded state. Figure 6 1 is a structural display of the electric wheelchair 1 in a folded state. The main supporting components of the electric wheelchair 1 in this embodiment are composed of a front roller 10, a bottom plate 60 and a rear roller 50. The front roller 10 and the rear roller 50 are connected through the bottom plate 60. The front roller 10, the rear roller 50 and the bottom plate 60 constitute the main body of the electric wheelchair 1. Based on this main body, the first connecting rod 30 is connected to the front roller 10, and the first connecting rod 30 is located on the outside of the front roller 10. The end of the first connecting rod 30 is connected to the armrest assembly 70. Therefore, when the electric wheelchair 1 is unfolded and folded, the first connecting rod 30 can rotate relative to the front roller 10. Similarly, the armrest assembly 70 can also rotate relative to the first connecting rod 30. When the electric wheelchair 1 is in a folded state, the first connecting rod 30 rotates to be flush with the bottom plate 60, and the armrest assembly 70 also rotates to the inside of the first connecting rod 30 and overlaps with the first connecting rod 30.

[0040] When the electric wheelchair 1 is transformed from a folded state to an unfolded state, the first connecting rod 30 rotates relative to the front roller 10, so that the first connecting rod 30 and the bottom plate 60 preferably form an angle of 60 to 75 degrees. The unfolding rotation angle of the first connecting rod 30 can be set according to the actual user's usage, and the rotation angle of the first connecting rod 30 relative to the bottom plate 60 is between 0 and 180 degrees to adapt to more different user groups.

[0041] It should be noted that, in the present embodiment, two first connecting rods 30 are provided, and the two first connecting rods 30 are respectively connected to the front rollers 10 on both sides. Similarly, the two first connecting rods 30 are correspondingly provided with two sets of armrest assemblies 70, so as to adapt to the user's two-hand support. The rear roller 50 is connected to the second connecting rod 40, and a battery 90 is provided in the body of the rear roller 50. The battery 90 is provided to provide electrical power for the electric wheelchair 1. The second connecting rod 40 is provided as a single one, and the single second connecting rod 40 is connected to the main body of the rear roller 50. The rotating shaft of the rear roller 50 is provided between the rear rollers 50 on both sides. Therefore, the second connecting rod 40 is a connecting rod body with a relatively thick body to provide a higher supporting strength. The end of the second connecting rod 40 is connected to the seat assembly 20. Therefore, when the electric wheelchair 1 in the present embodiment changes from the unfolded state to the folded state, the second connecting rod 40 rotates and fits toward the bottom plate 60, and the seat assembly 20 rotates and fits toward the second connecting rod 40 to form an overall flat shape.

[0042] The armrest assembly 70 includes: a first armrest plate 71, which is rotatably connected to the first connecting rod 30; a second armrest plate 72, which is rotatably connected to the first armrest plate 71; wherein the second armrest plate 72 is used to support the user's arm, and a Z-shaped fold is formed between the first armrest plate 71, the second armrest plate 72 and the first connecting rod 30.

[0043] The first armrest plate 71 is the main adjustment component in the armrest assembly 70, and the second armrest plate 72 is the main component that provides the user with an arm placement portion, wherein the first armrest plate 71, the second armrest plate 72 and the first connecting rod 30 form a Z-shaped structure, the first armrest plate 71 can be rotated and adjusted relative to the first connecting rod 30, and the second armrest plate 72 can be rotated and adjusted relative to the first armrest plate 71, so the adjustable range of the armrest assembly 70 in this embodiment is large, which meets the different armrest height requirements of users, and the handle height adjustment is relatively convenient, wherein, if the armrest assembly 70 is required to be in a lower position, the angle of the first connecting rod 30 relative to the bottom plate 60 can be adjusted to be reduced, and the first armrest plate 71 can also be adjusted toward the direction of the front roller 10, and the second armrest plate 72 remains parallel to the bottom plate 60. If the armrest assembly 70 is required to be in a higher position, the angle of the first connecting rod 30 relative to the bottom plate 60 can be adjusted to be increased, and the first armrest plate 71 can also be adjusted toward the direction of the rear roller 50, and the second armrest plate 72 remains parallel to the bottom plate 60.

[0044] At the same time, due to the rotatable connection setting of the first armrest plate 71 and the second armrest plate 72 in this embodiment, the electric wheelchair 1 in this embodiment supports the user to get on the vehicle sideways. It only needs to rotate the first armrest plate 71 below the seat cushion 21 to achieve a more convenient and easy sideways getting on the vehicle operation for some users without being affected by the position of the armrest.

[0045] The control component 130 is disposed on the second armrest plate 72 , so that the user can start, stop and move the electric wheelchair 1 through the control component 130 .

[0046] The seat assembly 20 includes a seat cushion 21 and a backrest 22 , wherein the seat cushion 21 is rotatably connected to the backrest 22 , and the seat cushion 21 is rotatably connected to the second connecting rod 40 , and the seat cushion 21 is always kept parallel to the bottom plate 60 .

[0047] The seat cushion 21 is used to support the user when sitting, and the backrest 22 is used to support the user's back. The backrest 22 can be rotated and adjusted relative to the seat cushion 21. According to the different rotation angles of the backrest 22, different backrest 22 leaning experiences can be provided to the user. Moreover, since the seat cushion 21 and the backrest 22 are rotatably connected, when the electric wheelchair 1 is transformed from an unfolded state to a folded state, the backrest 22 is rotated toward the seat cushion 21 to fit the seat cushion 21, and the folding can be completed, which is more convenient.

[0048] Preferably, both sides of the seat cushion 21 are slightly raised, providing a better wrapping feeling and a comfortable sitting feeling.

[0049] The seat assembly 20 further includes a back plate 23 , which is fixedly connected to the backrest 22 , and a hollow space is formed between the back plate 23 and the backrest 22 .

[0050] Specifically, the back plate 23 is a parameterized buffer shell that can resist impact to a certain extent. At the same time, the hollowing out between the back plate 23 and the backrest 22 can further improve the buffering effect.

[0051] The back panel 23 is connected to the backrest 22 in a detachable manner, and a groove is provided on the top of the back panel 23 to facilitate the user to take the back panel 23 and to install and remove the back panel 23.

[0052] The back plate 23 is provided with a plurality of openings 24 arranged at intervals. The arrangement of the openings 24 enables the back plate 23 to have a relatively light arrangement while having relatively good impact resistance.

[0053] Furthermore, the electric wheelchair 1 further includes an auxiliary roller assembly 80 , which is connected to the rear roller 50 .

[0054] The auxiliary roller assembly 80 extends out of the rear roller 50 . In this embodiment, the auxiliary roller is a small roller structure. The auxiliary roller can effectively prevent the electric wheelchair 1 from tipping over backwards.

[0055] The front roller 10 further includes: a roller member 11 , which is rotatably connected to the first connecting rod 30 ; and a mudguard shell 12 , which is wrapped around the roller member 11 and connected to the bottom plate 60 .

[0056] The roller member 11 is the main body of the front roller 10. The roller member 11 is covered with a mudguard shell 12 which is annularly covered on the outer surface of the roller member 11. When the electric wheelchair 1 in this embodiment passes through a muddy road section, the mud brought up by the roller member 11 can be blocked by the mudguard, thereby improving the user experience.

[0057] The roller member 11 includes a left roller 111 and a right roller 112 , and correspondingly, the mudguard shell 12 includes a left mudguard shell 121 and a right mudguard shell 122 ; wherein a footrest plate 100 is sandwiched and connected between the left mudguard shell 121 and the right mudguard shell 122 .

[0058] Specifically, the footrest 100 is a textured footrest 100, and an anti-skid texture is provided on the footrest 100, which can effectively prevent users from slipping when getting on and off the vehicle, thereby reducing the problem of side slipping caused by users stepping on the footrest 100.

[0059] The roller member 11 includes a wheel hub 110 and a universal wheel 120 . A plurality of universal wheels 120 are provided, and the plurality of universal wheels 120 are arranged around the wheel hub 110 .

[0060] The electric wheelchair 1 in this embodiment is a front-wheel drive structure, and the control direction is also achieved by the universal wheel 120 set by the front roller 10. A plurality of universal wheels 120 are set on the outer periphery of the wheel hub 110, and the travel direction of the electric wheelchair 1 is changed by the swing of the universal wheel 120.

[0061] Furthermore, an LED light shaft is provided at the rotating connection portion between the first connecting rod 30 and the first armrest plate 71. The LED light shaft can provide a certain warning effect to alert vehicles coming from the rear and side while providing the structure required for the rotating connection.

[0062] At the same time, a reflective dust cover is provided on the side of the rear roller 50 to effectively prevent the entry of dust. A light strip 91 is provided on one side of the auxiliary roller of the rear roller 50. The light strip 91 is preferably provided with a constant red light to serve as a warning to vehicles coming from behind. A safety bolt 81 is provided at one end of the rear roller 50 close to the second connecting rod 40, which can stop the electric wheelchair 1 in an emergency and reduce the occurrence of road accidents.

[0063] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. An electric wheelchair, characterized in that: The electric wheelchair (1) comprises an unfolded state and a folded state, and the electric wheelchair (1) comprises: Front roller (10); A seat assembly (20), wherein in the unfolded state, armrest assemblies (70) are symmetrically arranged on both sides of the seat assembly (20); a first connecting rod (30), one end of the first connecting rod (30) being rotatably connected to the front roller (10), and the other end of the first connecting rod (30) being rotatably connected to the handrail assembly (70); A rear end roller (50), wherein the rear end roller (50) is connected to the front end roller (10) via a bottom plate (60); a second connecting rod (40), one end of the second connecting rod (40) being rotatably connected to the rear end roller (50), and the other end of the second connecting rod (40) being rotatably connected to the seat assembly (20); When the electric wheelchair (1) changes from an unfolded state to a folded state, the first connecting rod (30) rotates close to the bottom plate (60), and the second connecting rod (40) rotates close to the bottom plate (60).

2. The electric wheelchair according to claim 1, characterized in that: The armrest assembly (70) comprises: A first armrest plate (71), the first armrest plate (71) being rotatably connected to the first connecting rod (30); A second armrest plate (72), the second armrest plate (72) being rotatably connected to the first armrest plate (71); The second armrest plate (72) is used to support the user's arm, and the first armrest plate (71), the second armrest plate (72) and the first connecting rod (30) form a Z-shaped fold.

3. The electric wheelchair according to claim 1, characterized in that: The seat assembly (20) comprises: A seat cushion (21) and a backrest (22), wherein the seat cushion (21) and the backrest (22) are rotatably connected, the seat cushion (21) and the second connecting rod (40) are rotatably connected, and the seat cushion (21) and the bottom plate (60) are always kept parallel.

4. The electric wheelchair according to claim 3, characterized in that: The seat assembly (20) further comprises: A back plate (23), wherein the back plate (23) is fixedly connected to the backrest (22), and a hollow space is formed between the back plate (23) and the backrest (22).

5. The electric wheelchair according to claim 4, characterized in that: The back plate (23) is provided with a plurality of openings (24) arranged at intervals.

6. The electric wheelchair according to claim 1, characterized in that: The electric wheelchair (1) further comprises: An auxiliary roller assembly (80), wherein the auxiliary roller assembly (80) is connected to the rear end roller (50).

7. The electric wheelchair according to any one of claims 1 to 6, characterized in that: The front roller (10) further comprises: A roller member (11), the roller member (11) being rotatably connected to the first connecting rod (30); A mudguard shell (12), wherein the mudguard shell (12) is wrapped around the roller member (11), and the mudguard shell (12) is connected to the bottom plate (60).

8. The electric wheelchair according to claim 7, characterized in that: The roller member (11) comprises a left end roller (111) and a right end roller (112), and correspondingly, the mudguard shell (12) comprises a left end mudguard shell (121) and a right end mudguard shell (122); Wherein, a footrest plate (100) is sandwiched and connected between the left end mudguard shell (121) and the right end mudguard shell (122).

9. The electric wheelchair according to claim 7, characterized in that: The roller member (11) comprises: A wheel hub (110) and a universal wheel (120), wherein a plurality of the universal wheels (120) are provided, and the plurality of universal wheels (120) are arranged around the wheel hub (110).

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