Electric wheelchair

Abstract

The utility model relates to the technical field of wheelchairs, in particular to an electric wheelchair, which comprises a chair body, wheels, an advancing driving mechanism, a pedal mechanism, a leg support, an overturning driving mechanism and a storage battery, the chair body is provided with a pedal position, the wheels are rotatably mounted on the chair body, the advancing driving mechanism drives the wheels to rotate, the pedal mechanism is rotatably mounted on the chair body, and the leg support drives the overturning driving mechanism to rotate. The leg support is rotationally connected with the end, close to the pedal position, of the chair body, the overturning driving mechanism is installed on the chair body and drives the leg support to rotate around the second rotating shaft to be close to or away from the pedal position, and the storage battery is installed on the chair body and provides electric energy for the advancing driving mechanism and the overturning driving mechanism. The first rotating shaft is perpendicular to the second rotating shaft. According to the electric wheelchair, the electric wheelchair assists a rider in placing feet on the pedal mechanism, and the technical purpose of improving the convenience of independently using the electric wheelchair by old people with disabled legs and feet is achieved.

Description

Technical Field

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

[0002] After the physical function of the elderly declines, a wheelchair is needed to assist the elderly in moving. An electric wheelchair is a wheelchair that uses electric energy to drive the wheels to rotate, so as to reduce the physical strength consumed by the elderly in driving the wheelchair. In the traditional technology, the electric wheelchair usually has footrests to prevent the feet of the elderly from touching the ground. However, for the elderly with inconvenient legs and feet, it is difficult to lift their feet and place them on the footrests, and artificial assistance is required to place the feet of the elderly on the footrests. There is a technical problem that the elderly with inconvenient legs and feet are difficult to use the electric wheelchair alone. Summary of the Utility Model

[0003] Based on this, in view of the technical problem that the elderly with inconvenient legs and feet are difficult to lift their feet and place them on the footrests, and artificial assistance is required to place the feet of the elderly on the footrests, and the elderly with inconvenient legs and feet are difficult to use the electric wheelchair alone, an electric wheelchair is provided.

[0004] An electric wheelchair includes: a chair body, wheels, a traveling drive mechanism, a footrest mechanism, a leg rest, a flipping drive mechanism, and a storage battery. The chair body has a footrest position. The wheels are rotatably installed on the chair body. The traveling drive mechanism drives the wheels to rotate. The footrest mechanism is rotatably installed on the chair body and rotates around a first rotation axis to approach or move away from the footrest position. The leg rest is rotatably connected to one end of the chair body close to the footrest position. The flipping drive mechanism is installed on the chair body and drives the leg rest to rotate around a second rotation axis to approach or move away from the footrest position. The storage battery is installed on the chair body and provides electric energy for the traveling drive mechanism and the flipping drive mechanism. The first rotation axis and the second rotation axis are perpendicular to each other.

[0005] For the above-mentioned electric wheelchair, first, the control pedal mechanism rotates around the first rotation axis to move away from the pedal position, so that the rider can sit on the seat body through the pedal position. Then, the storage battery provides electric energy, enabling the flipping drive mechanism to drive the leg rest to rotate around the second rotation axis and move away from the pedal position, supporting the rider's legs through the leg rest and moving the rider's legs away from the pedal position. Finally, the control pedal mechanism rotates around the first rotation axis to approach the pedal position, and the flipping drive mechanism drives the leg rest to approach the pedal position, enabling the rider's feet to be placed on the pedal mechanism at the pedal position, thus realizing that the electric wheelchair assists the rider in placing the feet on the pedal mechanism. Through the above design, by using the pedal mechanism to rotate around the first rotation axis on the seat body to approach or move away from the pedal position, and the flipping drive mechanism driving the leg rest to rotate around the second rotation axis on the seat body to approach or move away from the pedal position, it is beneficial to drive the rider's legs away from the pedal position through the flipping drive mechanism driving the leg rest. When the pedal mechanism is placed at the pedal position, the flipping drive mechanism is then used to drive the rider's legs to be placed on the pedal mechanism at the pedal position, so as to realize that the electric wheelchair assists the rider in placing the feet on the pedal mechanism, and solve the technical problem of improving the convenience of the elderly with inconvenient legs to use the electric wheelchair alone.

[0006] In one embodiment, the flipping drive mechanism includes a guide member, a guiding block, a connecting rod, and a translation drive assembly. The guide member is connected to the seat body, the guiding block is slidably connected to the guide member, one end of the connecting rod is rotatably connected to the guiding block, the other end of the connecting rod is rotatably connected to the leg rest, and the translation drive assembly drives the guiding block to slide along the guide member.

[0007] In one embodiment, the translation drive assembly includes a rack, a gear, and a translation drive member. The rack is installed on the seat body, the gear meshes with the rack, and the translation drive member is connected to the guiding block and drives the gear to rotate.

[0008] In one embodiment, the leg rest includes a guiding shaft, a support plate, and an adapter block. The guiding shaft is rotatably connected to the seat body, the support plate is connected to the guiding shaft, and the adapter block connects the support plate and the flipping drive mechanism.

[0009] In one embodiment, the leg rest further includes a flexible pad, and the flexible pad is connected to the support plate.

[0010] In one embodiment, the pedal mechanism includes a footrest frame and a footrest plate. The footrest frame is rotatably connected to the seat body around the first rotation axis, and the footrest plate is installed at one end of the footrest frame away from the seat body.

[0011] In one embodiment, the footrest mechanism further includes a locking assembly, the locking assembly is installed on the footrest frame, and the chair body is provided with a lock hole that cooperates with the locking assembly.

[0012] In one embodiment, the locking assembly includes a handle, a plug rod, a guide rod, a stop block and an elastic member. The handle is connected to the plug rod and the guide rod. The plug rod and the guide rod are both slidably connected to the footrest frame, and the plug rod is arranged in cooperation with the lock hole. The guide rod passes through the footrest frame and is connected to the stop block, and the elastic member is arranged between the stop block and the footrest frame.

[0013] In one embodiment, the footrest mechanism further includes a rear baffle, and the rear baffle is connected to the footrest frame and the footrest board.

[0014] In one embodiment, the traveling drive mechanism includes a traveling drive member and a control member. The traveling drive member is installed on the chair body and drives the wheels to rotate. The control member is installed on the chair body and is signal-connected to the traveling drive member. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the electric wheelchair shown in the present utility model;

[0016] Figure 2 is Figure 1 a schematic structural diagram of another perspective of the electric wheelchair shown;

[0017] Figure 3 is Figure 1 a schematic structural diagram of the footrest assembly of the electric wheelchair shown;

[0018] Figure 4 is Figure 1 a schematic structural diagram of the leg rest of the electric wheelchair shown;

[0019] Figure 5 is Figure 1 an enlarged schematic diagram of part A of the electric wheelchair shown.

[0020] The meanings of the reference numerals in the drawings are as follows:

[0021] 100, electric wheelchair;

[0022] 10, chair body; 11, footrest position;

[0023] 20, wheels;

[0024] 30, traveling drive mechanism; 31, traveling drive member; 32, control member;

[0025] 40. Footrest assembly; 41. Pedal frame; 42. Pedal board; 43. Rear baffle; 44. Locking assembly; 441. Handle; 442. Plug rod; 443. Guide rod; 444. Stopper; 445. Elastic member;

[0026] 50. Leg rest; 51. Guide shaft; 52. Support plate; 53. Adapter block;

[0027] 60. Flip drive mechanism; 61. Guide member; 62. Guide block; 63. Link; 64. Translation drive assembly; 641. Rack; 642. Gear; 643. Translation drive member;

[0028] 70. Storage battery. Detailed implementation manners

[0029] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0035] As Figure 1 shown, it is the electric wheelchair 100 shown in the present utility model.

[0036] As Figures 1 to 2As shown in the figure, the electric wheelchair 100 includes: a chair body 10, wheels 20, a traveling drive mechanism 30, a footrest mechanism, a leg rest 50, a flipping drive mechanism 60, and a storage battery 70. Among them, the chair body 10 is for the rider to sit on. The wheels 20 are rotatably installed on the chair body 10, and the number of wheels 20 is 4 to stably support the chair body 10. The traveling drive mechanism 30 is used to drive the wheels 20 to rotate. Both the footrest mechanism and the leg rest 50 are rotatably installed on the chair body 10. Among them, the flipping drive mechanism 60 drives the leg rest 50 to rotate around the chair body 10 to support the rider's legs to be lifted by the leg rest 50. The storage battery 70 is installed on the chair body 10 and provides electrical energy for the traveling drive mechanism 30 and the flipping drive mechanism 60. By using the flipping drive mechanism 60 to drive the leg rest 50 to support the rider's legs to be lifted and assisting the rider's legs to be placed on the footrest mechanism, it is beneficial to improve the convenience of the elderly with inconvenient legs to use the electric wheelchair 100 alone.

[0037] Below, in combination with Figures 1 to 5 , the above-mentioned electric wheelchair 100 will be further described.

[0038] As Figures 1 to 2 shown, the chair body 10 has a footrest position 11, and the footrest position 11 is for the soles of the feet to be placed. The traveling drive mechanism 30 includes a traveling drive member 31 and a control member 32. The traveling drive member 31 is a motor and is installed on the chair body 10. The traveling drive member 31 is connected to the wheels 20 to drive the wheels 20 to rotate. The control member 32 is installed on the chair body 10 and is signal-connected to the traveling drive member 31. By means of the control member 32, it is beneficial to control the rotation of the traveling drive member 31 to achieve the control of the movement of the electric wheelchair 100. It can be understood that the flipping drive mechanism 60 can also control the rotation of the leg rest 50 through the control member 32 to improve the control convenience of the flipping drive mechanism 60.

[0039] As Figure 1 and Figure 3As shown, the pedal mechanism is rotatably mounted on the chair body 10 and rotates around the first rotation axis F1 to approach or move away from the footrest position 11. Specifically, the pedal mechanism includes a pedal frame 41, a pedal board 42 and a rear baffle 43. The pedal frame 41 is rotatably connected to the chair body 10 around the first rotation axis F1. The pedal board 42 is mounted on one end of the pedal frame 41 away from the chair body 10. The rear baffle 43 is connected to the pedal frame 41 and the pedal board 42. Further, the pedal mechanism also includes a locking assembly 44, which is mounted on the pedal frame 41. The chair body 10 is provided with a locking hole (not shown) that cooperates with the locking assembly 44. Among them, the locking assembly 44 includes a handle 441, an insertion rod 442, a guide rod 443, a block 444 and an elastic member 445. The handle 441 is connected to the insertion rod 442 and the guide rod 443. The insertion rod 442 and the guide rod 443 are both slidably connected to the footrest frame 41, and the insertion rod 442 is matched with the locking hole. The guide rod 443 passes through the footrest frame 41 and is connected to the block 444. The elastic member 445 is arranged between the block 444 and the footrest frame 41. Through the cooperation of the locking assembly 44 and the footrest frame 41, it is beneficial to control the footrest plate 42 and the rear baffle plate 43 to be stably placed at the footrest position 11 for the passenger's feet to be placed.

[0040] like Figure 4 As shown, the leg rest 50 includes a guide shaft 51, a support plate 52 and an adapter block 53. The guide shaft 51 is rotatably connected to the chair body 10, the support plate 52 is connected to the guide shaft 51, the adapter block 53 connects the support plate 52 and the flip drive mechanism 60, and the leg rest 50 also includes a flexible pad (not shown), which is connected to the support plate 52 to enhance the support comfort of the leg rest 50 for the legs.

[0041] like Figure 5 As shown, the leg rest 50 is rotatably connected to one end of the chair body 10 near the footrest 11, the first rotation axis F1 and the second rotation axis F2 are perpendicular to each other, the flip drive mechanism 60 is installed on the chair body 10, and drives the leg rest 50 to rotate around the second rotation axis F2 to approach or move away from the footrest 11. Specifically, the flip drive mechanism 60 includes a guide member 61, a guide block 62, a connecting rod 63 and a translation drive assembly 64, the guide member 61 is connected to the chair body 10, and the guide block 62 slides with the guide member 61. The connecting rod 63 is dynamically connected, one end of the connecting rod 63 is rotationally connected to the guide block 62, and the other end of the connecting rod 63 is rotationally connected to the leg support 50. The translation drive assembly 64 drives the guide block 62 to slide along the guide member 61. Specifically, the translation drive assembly 64 includes a rack 641, a gear 642 and a translation drive member 643. The rack 641 is installed on the chair body 10, and the gear 642 is engaged with the rack 641. The translation drive member 643 is a motor, which is connected to the guide block 62 and drives the gear 642 to rotate.

[0042] The usage method of the electric wheelchair 100 described in the present utility model is as follows: First, control the footrest mechanism to rotate around the first rotation axis F1 to move away from the footrest position 11, so that the rider can sit on the seat body 10 through the footrest position 11. Then, the battery 70 provides electrical energy, enabling the flipping drive mechanism 60 to drive the leg rest 50 to rotate around the second rotation axis F2 and move away from the footrest position 11, supporting the rider's legs through the leg rest 50 and moving the rider's legs away from the footrest position 11. Finally, control the footrest mechanism to rotate around the first rotation axis F1 to approach the footrest position 11, and the flipping drive mechanism 60 drives the leg rest 50 to approach the footrest position 11, so that the rider's feet are placed on the footrest mechanism at the footrest position 11, realizing that the electric wheelchair 100 assists the rider in placing the feet on the footrest mechanism.

[0043] The beneficial effects of the electric wheelchair 100 described in the present utility model are as follows: By adopting the method that the footrest mechanism rotates around the first rotation axis F1 on the seat body 10 to approach or move away from the footrest position 11, and the flipping drive mechanism 60 drives the leg rest 50 to rotate around the second rotation axis F2 on the seat body 10 to approach or move away from the footrest position 11, it is beneficial to drive the rider's legs away from the footrest position 11 through the flipping drive mechanism 60 driving the leg rest 50. When the footrest mechanism is placed at the footrest position 11, then drive the rider's legs to be placed on the footrest mechanism at the footrest position 11 through the flipping drive mechanism 60 driving the leg rest 50, so as to realize that the electric wheelchair 100 assists the rider in placing the feet on the footrest mechanism, and solve the technical problem of improving the convenience of the elderly with inconvenient legs to use the electric wheelchair 100 alone.

[0044] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0045] The above-described embodiments only represent several implementation manners of the present utility model. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An electric wheelchair, characterized in that: include: A chair body, wheels, a travel drive mechanism, a footrest mechanism, a leg rest, a flip drive mechanism and a battery, wherein the chair body has a footrest, the wheel is rotatably mounted on the chair body, the travel drive mechanism drives the wheel to rotate, the footrest mechanism is rotatably mounted on the chair body, and rotates around a first rotation axis to approach or move away from the footrest, the leg rest is rotatably connected to one end of the chair body near the footrest, the flip drive mechanism is mounted on the chair body, and drives the leg rest to rotate around a second rotation axis to approach or move away from the footrest, the battery is mounted on the chair body, and provides electrical energy for the travel drive mechanism and the flip drive mechanism, and the first rotation axis and the second rotation axis are perpendicular to each other.

2. The electric wheelchair according to claim 1, characterized in that: The flipping drive mechanism includes a guide member, a guide block, a connecting rod and a translation drive assembly, wherein the guide member is connected to the chair body, the guide block is slidably connected to the guide member, one end of the connecting rod is rotationally connected to the guide block, the other end of the connecting rod is rotationally connected to the leg rest, and the translation drive assembly drives the guide block to slide along the guide member.

3. The electric wheelchair according to claim 2, characterized in that: The translation driving assembly comprises a rack, a gear and a translation driving member, wherein the rack is mounted on the chair body, the gear is meshed with the rack, and the translation driving member is connected with the guide block and drives the gear to rotate.

4. The electric wheelchair according to claim 1, characterized in that: The leg support comprises a guide shaft, a support plate and an adapter block, the guide shaft is rotatably connected to the chair body, the support plate is connected to the guide shaft, and the adapter block connects the support plate and the flip driving mechanism.

5. The electric wheelchair according to claim 4, characterized in that: The leg support also includes a flexible pad connected to the support plate.

6. The electric wheelchair according to claim 1, characterized in that: The pedal mechanism comprises a pedal frame and a pedal plate. The pedal frame is rotatably connected to the chair body around the first rotating axis, and the pedal plate is installed at one end of the pedal frame away from the chair body.

7. The electric wheelchair according to claim 6, characterized in that: The pedal mechanism also includes a locking assembly, which is mounted on the pedal frame, and the chair body is provided with a locking hole that cooperates with the locking assembly.

8. The electric wheelchair according to claim 7, characterized in that: The locking assembly includes a handle, an insertion rod, a guide rod, a block and an elastic member, the handle is connected to the insertion rod and the guide rod, the insertion rod and the guide rod are both slidably connected to the pedal frame, and the insertion rod is matched with the locking hole, the guide rod passes through the pedal frame and is connected to the block, and the elastic member is arranged between the block and the pedal frame.

9. The electric wheelchair according to claim 6, characterized in that: The pedal mechanism also includes a rear baffle, which is connected to the pedal frame and the pedal plate.

10. The electric wheelchair according to claim 1, characterized in that: The travel driving mechanism comprises a travel driving component and a control component. The travel driving component is installed on the chair body and drives the wheels to rotate. The control component is installed on the chair body and is connected to the travel driving component by signal.

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