TWM642887U - Foldable and disassembled electric wheelchair - Google Patents

Abstract

A foldable and disassembled electric wheelchair, comprising a seat unit, a front support unit, a rear support unit, a bottom support unit, a front wheel frame unit, and a rear wheel frame unit, the seat unit includes two upper side bars, The front support unit includes two front chair bars that are respectively pivoted on the upper side bars, the rear support unit includes two rear chair bars that are respectively pivoted on the upper side bars, and the bottom support unit includes two lower side bars, each The side bars are pivotally connected to the respective front chair bars and the rear chair bars. The front wheel frame unit includes two operating lever groups passing through the front chair bars, and two front wheels. The rear wheel frame unit includes two detachable The connecting rods installed on the rear chair bars, and the two rear wheels respectively arranged on the connecting rods, the front support unit can move between a use position and a folded position relative to the rear support unit, so as to achieve The effect of convenient storage.

Description

Foldable and disassembled electric wheelchair

The present invention relates to a wheelchair, in particular to a foldable and disassembled electric wheelchair which can be steered by one hand or two hands.

An existing foldable and disassembled electric wheelchair comprises a seat, four wheels arranged under the seat, a motor for driving the wheels, and an operation box for controlling the motor. The operator operates the operation box to make the motor run in conjunction with the wheels, so as to control the movement of the foldable and disassembled electric wheelchair.

However, when the user operates the operation box, because there is no stable support for the hands, there will be a sense of insecurity in use. In addition, the existing foldable and disassembled electric wheelchair will also take up too much space when not in use. question.

Therefore, the purpose of the present invention is to provide a foldable and disassembled electric wheelchair that overcomes the disadvantages of the prior art.

Therefore, the electric wheelchair that can be folded and decomposed of the present invention includes a seat unit, a front support unit, a rear support unit, a bottom support unit, a front wheel frame unit, a rear wheel frame unit, and a power unit.

The seat unit includes two upper side bars arranged at intervals along a left and right direction, and a seat set on the upper side bars, each upper side bar has a first side and a second side oppositely arranged along its own extension direction , the front support unit includes two front chair bars that are respectively pivoted on the first side of the upper side bars and extend downward, and the rear support unit includes two rear chair bars that are respectively pivoted on the second side of the upper side bars , each rear chair bar has a pivotal portion pivotally arranged on the second side of the respective upper side bar, a back bar portion extending upward from the pivotal portion, and a lower portion arranged at the bottom of the pivotal portion The rod portion, the bottom support unit includes two lower side rods arranged at intervals along the left-right direction, each lower side rod has a third side pivotally connected to the respective front chair rods, and a third side pivotally connected to the respective rear chair rods The fourth side of the lower rod portion of the rod, the front wheel frame unit includes two rotatably operating rod groups that pass downwards through the front chair rods respectively, and two rotatably arranged on the operating rod groups and are located on the The front wheel below the front chair rod, and a front link pivotally connected to the operating rod groups so that the operating rod groups can move together, the rear wheel frame unit includes two detachably installed on the rear chair The connecting rods of the lower rods of the rod, two rear wheels that can be rotatably arranged on the connecting rods, and a bearing seat connected to the connecting rods, the power unit includes a set of operating rods One of them is a controller with a height higher than the seat, a battery installed on the bearing seat and electrically connected to the controller, and a motor electrically connected to the battery to provide power, and the front support unit can be opposite to the rear support The unit moves between an in-use position and a stowed position. In the in-use position, the front support unit faces forward relatively away from the rear support unit so that the seat unit is substantially horizontal. In the stowed position, The front support unit is relatively adjacent to the rear support unit facing backward, so that the side of the seat unit and the bottom support unit corresponding to the front support unit is turned upward.

The effect of the present model is: by setting the seat unit, the front support unit, the rear support unit and the bottom support unit which are pivoted correspondingly to each other, the front support unit can be positioned at the use position and the rear support unit relative to the rear support unit. The folded position can be moved between the folded positions, and the connecting rods in the rear wheel frame unit are detachably installed on the lower rods of the rear chair rods to achieve the effect of being detachable for storage separately.

Referring to Fig. 1, 2, 3, an embodiment of the electric wheelchair that can be folded and disassembled of the present invention comprises a seat unit 2, a front support unit 3, a rear support unit 4, a bottom support unit 5, a front wheel frame unit 6. A rear wheel frame unit 7 and a power unit 8 .

The seat unit 2 includes two upper side rods 21 arranged at intervals along a left-right direction X, and a seat 22 arranged on the upper side rods 21. Each upper side rod 21 has a first oppositely arranged along its own extension direction. side 211 and a second side 212 .

The front support unit 3 includes two front chair bars 31 respectively pivoted on the first sides 211 of the upper bars 21 and extending downward.

The rear support unit 4 includes two rear chair bars 41 pivotally disposed on the second sides 212 of the upper bars 21 , two positioning discs 42 , and two positioning pins 43 . Each rear chair bar 41 has a pivotal portion 411 pivotally arranged on the second side 212 of the respective upper side bar 21, a back bar portion 412 extending upward from the pivotal portion 411, and a back bar portion 412 arranged on the pivotal portion 411. The lower rod portion 413 at the bottom of the connecting portion 411, each lower rod portion 413 has two oppositely arranged through holes 414, and the positioning plates 42 are respectively arranged on the lower rod portions 413, and the positioning plates 42 have two respectively arranged on the lower rod portions 413. The main body portion 421 of the lower rod portion 413 and two support portions 422 respectively extend from the main body portions 421 along the left-right direction X. The main body portion 421 of each positioning plate 42 has a first positioning hole 423, and a second positioning hole 424 that is higher than the first positioning hole 423 and adjacent to the lower rod portion 413 relative to the first positioning hole 423 .

The bottom support unit 5 includes two lower side rods 51 arranged at intervals along the left-right direction X, each lower side rod 51 has a third side 511 pivotally connected to the respective front chair rod 31, and a third side 511 pivotally connected to the respective front chair rod 31. The fourth side 512 of the lower pole portion 413 of the rear chair bar 41 and the two third positioning holes 513 located on the fourth sides 512 and adjacent to the body portions 421 of the positioning plates 42 respectively. In this embodiment, the positioning pins 43 are pre-set in the third positioning holes 513 respectively.

The front wheel frame unit 6 includes two operating rod groups 61 that pass downwardly through the front chair bars 31 rotatably, and two operating rod groups 61 that are rotatably arranged on the operating rod groups 61 and are located below the front chair bars 31 respectively. The front wheel 62 and a front connecting rod 63 are pivotally connected to the operating lever sets 61 so that the operating lever sets 61 can move together. Each operating lever group 61 has a bushing 611 that passes through the respective front chair bar 31, and a handle 612 that passes through the bushing 611 downwards and can adjust its position, and is set in the respective bushing. 611 and a connecting piece 613 for the pivotal connection of the front wheel 62 and the front link 63 respectively, and a harness 614 for fixing the handle 612 to the sleeve tube 611 .

The rear wheel frame unit 7 includes two connecting rods 71 that are detachably mounted upwardly on the lower rods 413 of the rear chair rods 41, and two rear wheels that are respectively rotatably arranged on the connecting rods 71. 72. A bearing seat 73 connecting the connecting rods 71, two fixing parts 74, and two shock absorbing springs 75 respectively arranged in the lower rod parts 413. Each connecting rod 71 has two oppositely disposed through slots 711, and each fixing member 74 is detachably penetrated through the respective through holes 414 of the respective lower rod portion 413 and the respective through slots of the respective connecting rod 71 711 to fix the lower rod portion 413 and the connecting rod 71 , each shock absorbing spring 75 is located between the respective pivot portion 411 and the respective fixing member 74 . In this embodiment, each fixing member 74 is a D-shaped pin.

The power unit 8 includes a controller 81 arranged on one of the operating rod groups 61 and higher than the seat 22, a battery 82 arranged on the bearing seat 73 and electrically connected to the controller 81, a Electrically connected to the battery 82 to provide power to the motor 83, a gearbox 84 arranged on the motor 83, an electromagnetic brake 85 arranged on the motor 83 and electrically connected to the controller 81, and an electromagnetic brake 85 arranged on the electromagnetic brake 85 Clutch handle 86. The motor 83 and the gearbox 84 are used to drive the front wheels 62 or the rear wheels 72 . In this embodiment, the motor 83 and the gearbox 84 are used to drive the rear wheels 72, and are arranged between the rear wheels 72, the gearbox 84 is connected to the rear wheels 72, and in other implementations In an aspect, the motor 83 and the gearbox 84 can also be used to drive the front wheels 62 and be arranged between the front wheels 62, but they are not limited to these two aspects. In addition, the electromagnetic brake 85 can be locked when not powered, so that the foldable and decomposed electric wheelchair cannot move when not powered, and when the electromagnetic brake 85 is locked without being powered, the clutch handle 86 can be manually switched to unlock the wheelchair. The electromagnetic brake 85 makes this foldable and decomposed electric wheelchair still manually pushable when it is not electrified.

Referring to FIGS. 1 and 4 , the front support unit 3 can move relative to the rear support unit 4 between a use position and a folded position.

When in the use position (see FIG. 1 ), the front support unit 3 faces forward and is relatively far away from the rear support unit 4 , and the lower rods 51 respectively abut against the top sides of the support portions 422 of the positioning plates 42 , so as to Make the seat unit 2 substantially horizontal, each positioning pin 43 passes through the corresponding third positioning holes 513 and penetrates through the first positioning holes 423 of the respective positioning plate 42, so that the rear support The unit 4 and the bottom support unit 5 are fixed.

When in the folded position (see FIG. 4 ), the front support unit 3 faces backward and is relatively adjacent to the rear support unit 4, so that the side of the seat unit 2 and the bottom support unit 5 corresponding to the front support unit 3 faces Upturned, each positioning pin 43 passes through the corresponding third positioning holes 513 and penetrates through the second positioning holes 424 of the respective positioning plate 42, so that the rear support unit 4 and the bottom support unit 5 subject to fixation.

Referring to Figures 1, 2, and 3, when in use, the front support unit 3 is moved to the use position relative to the rear support unit 4, and after being fixed by the positioning pins 43, the user can sit on the seat unit 2, by operating the handles 612, the bushings 611 and the connectors 613 are respectively linked to change the direction of the front wheels 62, and the controller 81 can be operated by fingers to drive the motor 83 to run, and then Controls forward and backward movement. It should be noted that since the front link 63 and the connecting pieces 613 form a link structure, even if only one of the handles 612 is operated to rotate, the other handle 612 will also be linked and move simultaneously.

Referring to Figures 1 and 6, in addition, since the handles 612 can be adjusted relative to the sleeve pipes 611, they can be adapted to the hand positions of different users, and the user will also feel uncomfortable after holding the handles 612. Stable support improves comfort and security during use.

Referring to Figures 2, 3, and 4, when the foldable and disassembled electric wheelchair is to be folded, only the front support unit 3 is moved to the folded position relative to the rear support unit 4, and through the positioning pins 43 Once fixed, it can be folded to save space.

Referring to Fig. 3, 5, further, after taking off these fixing parts 74, this rear wheel frame unit 7 can be taken out downwards from these lower rod parts 413 of these rear chair rods 41, together with the battery 82 They can be stored together to further save space.

In summary, by setting the seat unit 2 , the front support unit 3 , the rear support unit 4 and the bottom support unit 5 which are pivoted correspondingly to each other, the front support unit 3 can be opposite to the rear support unit 4 Move between the use position and the folded position, and by the connecting rods 71 detachably installed on the lower rod parts 413 of the rear chair bars 41 in the rear wheel frame unit 7, the The effect of being able to be disassembled to be stored separately, and then to be foldable and disassembled, can indeed achieve the purpose of the present invention.

But the above-mentioned person is only the embodiment of the present invention, and should not limit the scope of implementation of the present invention with this, and all simple equivalent changes and modifications made according to the patent scope of the present application and the content of the patent specification are still within the scope of the present invention. Within the scope covered by this patent.

2: seat unit 21: upper side bar 211: first side 212: second side 22: seat 3: Front support unit 31: Front chair bar 4: rear support unit 41: Rear chair bar 411: pivot joint 412: back bar 413: Lower shaft 414: perforation 42: Positioning plate 421: Body Department 423: The first positioning hole 424: Second positioning hole 422: support part 43: Locating pin 5: Bottom support unit 51: lower side bar 511: third side 512: Fourth side 513: The third positioning hole 6: Front wheel frame unit 61: Joystick set 611: Casing 612: handle 613: connector 614: harness 62: front wheel 63: Front connecting rod 7: Rear wheel frame unit 71: connecting rod 711: slotting 72: rear wheel 73: Bearing seat 74:Fixer 75: shock absorber spring 8: Power unit 81: Controller 82: battery 83: motor 84: gearbox 85:Electromagnetic brake 86: clutch handle X: left and right direction

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a perspective view of an embodiment of the new foldable and disassembled electric wheelchair, illustrating a front support unit in a use position relative to a rear support unit; Fig. 2 is a three-dimensional exploded view of this embodiment, illustrating the configuration of a seat unit, the front support unit, a bottom support unit and a front wheel frame unit; Fig. 3 is a three-dimensional exploded view of this embodiment, illustrating the configuration of the seat unit, the rear support unit, the bottom support unit, a rear wheel frame unit, a battery, a motor, an electromagnetic brake and a clutch handle; Figure 4 is a view similar to Figure 1, illustrating the front support unit in a collapsed position relative to the rear support unit; Figure 5 is a view similar to Figure 4, illustrating that the rear wheel frame unit has been disassembled from the two rear chair bars; and Fig. 6 is a view similar to Fig. 1, illustrating the state of adjusting the position of the second handle.

2: seat unit

3: Front support unit

4: rear support unit

413: Lower shaft

414: perforation

5: Bottom support unit

6: Front wheel frame unit

7: Rear wheel frame unit

71: connecting rod

74:Fixer

8: Power unit

82: battery

83: motor

84: gearbox

Claims (10)

A foldable and disassembled electric wheelchair, comprising: A seat unit, including two upper side rods arranged at intervals along a left-right direction, and a seat seat arranged on the upper side rods, each upper side rod has a first side and a second side oppositely arranged along its own extension direction side; a front support unit, including two front chair bars which are respectively pivoted on the first side of the upper side bars and extend downward; A rear support unit, including two rear chair bars pivotally arranged on the second side of the upper side bars respectively, each rear chair bar has a pivoting part pivotally arranged on the second side of the respective upper side bars, an automatic a back rod part extending upwards from the pivot joint part, and a lower rod part arranged at the bottom of the pivot joint part; A bottom support unit, including two lower side rods arranged at intervals along the left-right direction, each lower side rod has a third side pivotally connected to the respective front chair rods, and a third side pivotally connected to the respective rear chair rods the fourth side of the lower shaft; A front wheel frame unit, including two operating rod groups rotatably passing through the front chair rods respectively downwards, two front wheels respectively rotatably arranged on the operating rod groups and located below the front chair rods, and a a front link pivotally connected to the sets of operating levers to enable the sets of operating levers to move together; A rear wheel frame unit, including two connecting rods respectively detachably installed on the lower rods of the rear chair rods, two rear wheels respectively rotatably arranged on the connecting rods, and a connecting rod connected to the bearing seats for connecting rods; and A power unit, including a controller arranged on one of the operating rod groups and having a height higher than the seat seat, a battery arranged on the bearing seat and electrically connected to the controller, and a battery electrically connected to the battery to motors providing power; The front support unit can move between a use position and a folded position relative to the rear support unit. It is horizontal, and in the folded position, the front support unit is relatively adjacent to the rear support unit, so that the side of the seat unit and the bottom support unit corresponding to the front support unit is turned upward. The foldable and disassembled electric wheelchair according to claim 1, wherein the power unit further includes a gearbox arranged on the motor, an electromagnetic brake arranged on the motor, and a clutch handle arranged on the electromagnetic brake. The foldable and disassembled electric wheelchair according to claim 2, wherein the gearbox is connected to the rear wheels. The foldable and disassembled electric wheelchair according to claim 2, wherein the motor and the gearbox are used to drive the front wheels or the rear wheels. The electric wheelchair that can be folded and disassembled as described in claim 1, wherein each operating rod set has a sleeve that passes through the respective front chair rod, and a sleeve that passes through the sleeve downwards and can be adjusted in position. handle. The electric wheelchair that can be folded and disassembled as claimed in claim 5, wherein each operating rod set also has a connecting piece set on the respective bushing and pivotally connected to the respective front wheel and the front link. The electric wheelchair that can be folded and disassembled according to claim 1, wherein each lower bar has two oppositely arranged perforations, each connecting rod has two oppositely arranged through slots, and the rear wheel frame unit also includes two fixing pieces, Each fixing piece is detachably penetrated through the through holes of the respective lower rods and the through grooves of the respective connecting rods to fix the lower rods and the connecting rods. The electric wheelchair that can be folded and disassembled according to claim 7, wherein the rear wheel frame unit further includes two shock absorbing springs respectively arranged in the lower rods, each shock absorbing spring is located at the respective pivot joints and between the respective fixtures. The electric wheelchair that can be folded and disassembled according to claim 1, wherein the rear support unit further includes two positioning plates respectively arranged on the lower rods, and the positioning plates have two positioning plates respectively arranged on the lower rods The body part, and two supporting parts extending from the body parts along the left-right direction, when in the use position, the lower rods respectively abut against the top sides of the supporting parts. The electric wheelchair that can be folded and disassembled as described in Claim 9, wherein, the body portion of each positioning plate has a first positioning hole, and a second positioning hole that is higher than the first positioning hole, and each lower side bar There are also two third positioning holes located on the respective fourth sides. The rear support unit also includes two positioning pins. When the respective first positioning holes are in the retracted position, each positioning pin passes through the corresponding third positioning holes and passes through the respective second positioning holes.

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