TWM500568U - Detachable power assist device for wheelchair - Google Patents

Description

Wheelchair detachable power assist device

The present invention relates to a power assist device, and more particularly to a detachable power assist device for a wheelchair.

As shown in FIG. 1, the conventional power assisting device 11 is adapted to be mounted on a wheelchair 10 having two front wheels 101 and two rear wheels 102, and includes a power storage device 111, and a power storage device 111 can be used. The motor 112 is driven to achieve the user's self-control and drive of the wheelchair 10, thereby improving the flexibility and the movable distance when used outdoors, which is a convenient design for people with reduced mobility.

Such a design still needs to consider the ease of handling required for indoor and outdoor use, so it is important to have good and convenient detachability, but the conventional power assist device 11 is directly locked in the wheelchair. 10, so it is very inconvenient to disassemble. On the other hand, even if the power assisting device 11 is externally attached, the two front wheels 101 of the wheelchair 10 are constantly in contact with the ground, and the front wheels 101 may affect the smoothness of the driving of the wheelchair 10 by the power assisting device 11 because it rubs against the ground. Therefore, there is still room for improvement.

Accordingly, it is an object of the present invention to provide a detachable power assist device that is easy to disassemble and use and that has better safety in use.

Therefore, the detachable power assisting device of the present invention includes a frame body and two front wheels and two rear wheels respectively for supporting the frame body. The detachable power assisting device includes an auxiliary connecting unit and a A bracket unit, a faucet unit, and a power unit.

The auxiliary connecting unit is assembled on the frame of the wheelchair and includes a connecting plate and a plurality of clamping claws capable of positioning the connecting plate on the wheelchair.

The bracket unit includes a main frame body, an extension frame body pivotally disposed on the main frame body, and a linkage between the main frame body and the extension frame body and having a handleable toggle lever The module is configured to pivot the extension frame relative to the main frame body between a connection position and a release position, and the extension frame body can be fixed to the auxiliary connection when the connection position is The lands of the unit are supported by the linkage module to abut against the main frame body, thereby lifting the front wheels of the wheelchair away from the ground. In the release position, the extension frame body The lands of the auxiliary connection unit are removed.

The faucet unit is pivotally disposed on the main frame body and includes a handle for holding.

The power unit includes a power wheel assembled on the faucet unit, and a power component capable of driving the power wheel to rotate.

The effect of the novel is that the connection is facilitated by manual operation. In addition to improving the convenience of disassembly and use, the moving module does not have to worry about the risk of not being able to switch between the two states when the external power source fails.

100‧‧‧ Wheelchair

101‧‧‧ frame

102‧‧‧ front wheel

103‧‧‧ Rear wheel

2‧‧‧Auxiliary connection unit

21‧‧‧Connector

211‧‧‧Positioning holes

22‧‧‧Connecting tube

23‧‧‧Clamping claws

231‧‧‧Snap holes

24‧‧‧Retractable buckle

3‧‧‧ bracket unit

31‧‧‧Main frame

32‧‧‧Extended frame

33‧‧‧ linkage module

331‧‧‧Lifter

332‧‧‧ trench

333‧‧‧First groove segment

334‧‧‧Second groove section

335‧‧‧ grip

336‧‧‧ pivot shaft

337‧‧‧Sliding parts

338‧‧‧Flexible components

34‧‧‧Quick lock module

341‧‧‧Extension hole

342‧‧‧Connecting tube hole

343‧‧‧ fast lock pin

344‧‧‧Hand screw

35‧‧‧ foot stand

351‧‧‧ buckle slot

36‧‧‧foot stand

4‧‧‧Faucet unit

41‧‧‧Before the tube

42‧‧‧standpipe

43‧‧‧Adjusting the collar

44‧‧‧Hands

45‧‧‧Front tube

46‧‧‧Snap lock connector

5‧‧‧Power unit

51‧‧‧Power Wheel

52‧‧‧Power components

53‧‧‧Power storage components

54‧‧‧Control elements

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a schematic diagram illustrating a conventional power assisting device. FIG. 2 is a partial exploded view showing the wheelchair of the present invention. An auxiliary connecting unit of one embodiment of the detachable power assisting device; FIG. 3 is a combined view illustrating the state of the embodiment after the auxiliary connecting unit is removed and in a release position; FIG. 4 is a schematic view. A state in which an extension frame of the embodiment is connected to the auxiliary connection unit is illustrated; and FIG. 5 is a combination view showing a state in which the embodiment is in a connection position and the tripod is folded upward.

As shown in FIG. 2, FIG. 3, and FIG. 4, the embodiment of the detachable power assist device of the present invention is suitable for being installed in a wheelchair 100. The wheelchair 100 includes a frame 101 and is respectively used for supporting the wheelchair 100. The two front wheels 102 and the two rear wheels 103 of the frame body 101, wherein the wheelchair 100 is a well-known and widely used product on the market, and therefore will not be described in detail herein. The embodiment comprises an auxiliary connecting unit 2, a bracket unit 3, a faucet unit 4, and a power unit 5.

The auxiliary connecting unit 2 is assembled on the wheelchair 100 and includes a connecting plate 21, a connecting tube 22, a plurality of clamping claws 23, and a plurality of telescopic buckles 24.

The lands 21 have a plurality of locating holes 211. The connecting pipe 22 is fixedly disposed on the lands 21. In the embodiment, the lands 21 are H-shaped, and the positioning holes 211 are distributed at the four ends of the lands 21 , and the connecting tubes 22 are spanned at a central position of the lands 21 .

The clamping claws 23 are telescopically inserted into the connecting plate 21, and the connecting plate 21 can be positioned on the frame body 101 of the wheelchair 100, and each has a corresponding positioning hole 211 corresponding to one of the positioning holes 211. The snap hole 231.

The telescopic buckles 24 are respectively disposed in the clamping claws 23 and can pass through the corresponding locking holes 231 to be fastened and fixed in the adjacent positioning holes 211. In this embodiment, each of the latching holes 231 can correspond to the plurality of positioning holes 211 of the connecting plate 21, thereby facilitating the operator to flexibly change the position of the clamping claws 23 relative to the connecting plate 21, thereby enabling A preferred fixing method is achieved according to the outer dimensions of the frame body 101 of the wheelchair 100.

The bracket unit 3 includes a main frame body 31, an extension frame body 32, a linkage module 33, a quick lock module 34, a tripod base 35, and a stand 36.

The extension frame body 32 is pivotally disposed on the main frame body 31.

The linkage module 33 is located between the main frame body 31 and the extension frame body 32, and has a hand-turnable switch and has a groove 332 and a grip. a pivoting rod 331 of the portion 335, a pivoting shaft 336 for pivoting the triggering rod 331 to the extending frame body 32, a pivoting member 336 fixed to the main frame body 31, and slidable in the groove 332 of the trigger rod 331 The sliding member 337 and a resilient member 338 connected between the trigger rod 331 and the main frame body 31 and adjacent to the main frame body 31.

The operator can hold the grip portion 335 of the trigger rod 331 and pivot the trigger rod 331 around the pivot shaft 336 to pivot the trigger rod 331 relative to the extension frame body 32. The extension frame 32 is pivotable relative to the main frame 31 between a connection position (as shown in FIG. 5) and a release position (shown in FIG. 3). In the connection position, the extension frame 32 can be fixed to the lands 21 of the auxiliary connection unit 2, and the linkage module 33 is positioned to abut against the main frame 31, thereby being able to The front wheels 102 of the wheelchair 100 are lifted away from the ground, and in the released position, the extension frame 32 is removed from the lands 21 of the auxiliary connection unit 2. Preferably, the operator moves the lever 331 in the direction of its own direction to move between the connecting position and the releasing position, thereby achieving the advantage of facilitating the gripping force.

In the embodiment, the groove 332 of the pull rod 331 has a first groove segment 333 and a second groove segment 334. The first groove segment 333 is coupled to the second groove segment 334. Adjacent to the position of the pivot axis 336. In the connected position, the slider 337 slides to a position where the first groove segment 333 is away from the pivot shaft 336. In the release position, the slider 337 slides to the second groove segment 334 away from the position. The position of the pivot shaft 336. Preferably, the first groove segment 333 is orthogonal to the second groove 334 segment, whereby the elastic member 338 can be used to keep the trigger rod 331 adjacent to the main frame. The body 31 further achieves the effect of sequentially positioning the extension frame 32 at the connection position and the release position.

The quick-lock module 34 can fix the extension frame 32 to the connecting tube 22 of the auxiliary connecting unit 2, and has an extending frame hole 341 extending through the extending frame body 32, and a plurality of through-holes are disposed through the connecting pipe. The connecting pipe hole 342 of the 22, and a quick lock pin 343 which can be inserted into the corresponding extending frame hole 341 and the connecting pipe hole 342.

By adjusting the extension holes 341 to the connection holes 342 at different positions, the position of the support unit 3 relative to the auxiliary connection unit 2 can be adjusted, thereby achieving better use for different types of operators. Comfort. It should be noted that the number of the connecting tube holes 342 in this embodiment can also be only one, and cannot be limited thereto.

The stand base 35 has a plurality of snap grooves 351. In this embodiment, the fastening slots 351 are arranged in an array, and the tripod 36 can be fastened to any one of the fastening slots 351 by an external force. Preferably, the external force can be additionally installed with a spring. Provided (not shown). It should be noted that when the extension frame 32 is located at the connection position, the operator can form a position for the foot when the foot frame 36 is disposed at the uppermost fastening groove 351 (eg, Figure 5), which further improves the convenience of use. Conversely, when the extension frame 32 is in the release position, the stand 36 can be supported against the ground to achieve the effect of supporting the embodiment.

The faucet unit 4 is pivotally disposed on the main frame body 31, and includes a front tube 41 pivotally coupled to the main frame body 31, and a movable tube 42 that is movably sleeved in the front tube 41. Fixing the standpipe 42 to the front pipe An adjustment collar 43, a handle 44 mounted on the top of the riser 42 and capable of being gripped, and a front fork tube 45 disposed opposite the riser 42 at the bottom of the front tube 41.

Preferably, in order to improve the space saving during storage, the front tube 41 of the embodiment can be bent and stored in the direction of the ground by a latching joint 46, thereby reducing the space required for storage. , but not limited to this.

The power unit 5 includes a power wheel 51 assembled to the front fork tube 45 of the faucet unit 4, a power component 52 capable of driving the power wheel 51 to rotate, a power storage component 53, and an electrical connection to the power Element 52 and control element 54 between the storage element 53. In the present embodiment, the power element 52 is disposed outside the power wheel 51, preferably a thin-wall motor. By arranging the power element 52 adjacent to the power wheel 51, the position of the center of gravity can be effectively reduced, thereby facilitating the operator's ability to rotate the handle 44, thereby improving the stability between the driving.

With the above structure, the assembly method of the detachable power assisting device of the present invention is as follows:

Step 1: The auxiliary connecting unit 2 is fixed to the frame body 101 of the wheelchair 100 by the clamping claws 23. At this time, the operator can flexibly adjust the position of the clamping claws 23 fixed to the connecting plate 21 by the telescopic buckles 24 according to the outer dimensions of the frame 101.

Step 2: The extension frame 32 of the bracket unit 3 is mounted on the connecting tube 22 of the auxiliary connecting unit 2 by the quick lock module 34. At this time, the operator can also use the fast mode locking mode. The extension hole 341 of the group 34 and The connection of the tube holes 342 to the elastic adjustment position is convenient for the operator to use.

Step 3: The grip 331 can be pivoted relative to the extension frame 32 by holding the grip portion 335 of the trigger rod 331 and pivoting the trigger rod 331 around the pivot shaft 336. Positioning the extension frame 32 in the connection position, the front wheel 102 of the wheelchair and the stand 36 of the embodiment are far from the ground, and only by the rear wheels 103 of the wheelchair 100 and the The power wheel 51 achieves a stable three-point support, thereby improving the operational and riding comfort in addition to the effective reduction of the frictional force and the aging of the storage element.

Step 4: At the connection position, the operator can also choose whether to fasten the tripod 36 upward, and thus can be used to support the feet, thereby improving the comfort during riding.

When the operator wants to dismount the embodiment, the above steps can be quickly completed only by reverse operation. However, when the assembly and disassembly operations are frequent, the auxiliary connecting unit 2 can be fixed to the wheelchair 100. Further, the subsequent assembly process is facilitated, and the convenience in use is improved.

In summary, the hand-operated interlocking module 33 can improve the convenience of disassembly and use, and there is no need to worry about the risk of failing to switch between the two states when the external power source fails. In order to achieve the safety of use, it is indeed possible to achieve the purpose of the present invention.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change of the patent application scope and the patent specification content of the present invention is Modifications are still within the scope of this new patent.

100‧‧‧ Wheelchair

101‧‧‧ frame

102‧‧‧ front wheel

103‧‧‧ Rear wheel

2‧‧‧Auxiliary connection unit

21‧‧‧Connector

22‧‧‧Connecting tube

23‧‧‧Clamping claws

3‧‧‧ bracket unit

31‧‧‧Main frame

32‧‧‧Extended frame

33‧‧‧ linkage module

331‧‧‧Lifter

332‧‧‧ trench

333‧‧‧First groove segment

334‧‧‧Second groove section

335‧‧‧ grip

336‧‧‧ pivot shaft

337‧‧‧Sliding parts

338‧‧‧Flexible components

34‧‧‧Quick lock module

35‧‧‧ foot stand

351‧‧‧ buckle slot

36‧‧‧foot stand

4‧‧‧Faucet unit

41‧‧‧Before the tube

42‧‧‧standpipe

43‧‧‧Adjusting the collar

44‧‧‧Hands

45‧‧‧Front tube

46‧‧‧Snap lock connector

5‧‧‧Power unit

51‧‧‧Power Wheel

52‧‧‧Power components

53‧‧‧Power storage components

54‧‧‧Control elements

Claims (10)

A detachable power assisting device for a wheelchair, the wheelchair comprising a frame body and two front wheels and two rear wheels respectively for supporting the frame body, the detachable power assisting device comprising: an auxiliary connecting unit, assembled and arranged The frame body of the wheelchair includes a connecting plate and a plurality of clamping claws capable of positioning the connecting plate on the wheelchair; a bracket unit including a main frame body and a pivoting arrangement on the main frame body The upper extension frame body, and a linkage module between the main frame body and the extension frame body and having a handleable toggle lever, by pulling the trigger lever, the extension frame body can be opposite The main frame body is pivoted between a connection position and a release position. In the connection position, the extension frame body can be fixed to the connection plate of the auxiliary connection unit, and the linkage module is supported by the linkage module. The main frame body can thereby lift the front wheels of the wheelchair away from the ground. In the release position, the extension frame body is removed from the connecting plate of the auxiliary connecting unit; a faucet unit is pivotally disposed at The main frame body includes a handle that can be held ; And a power unit, comprising a driving wheel, and a power element can be driven to rotate the power wheel assembly of a tap provided on the unit. The detachable power assisting device of the wheelchair of claim 1, wherein the ejector module of the linkage module has a groove and a grip portion, and the linkage module further has a pivoting lever a pivot shaft disposed on the extension body, and a sliding portion fixed to the main frame body and capable of sliding in the groove And the lever is rotatable relative to the extension body by the pivot shaft, and synchronously restricting the slider by the groove to rotate the extension body between the connection position and the release position. The detachable power assist device of the wheelchair of claim 2, wherein the groove of the trigger has a first groove segment and a second groove segment, the first groove segment and the second The groove segments are coupled adjacent to the pivot axis. The detachable power assisting device of the wheelchair of claim 3, wherein the interlocking module further has a connection between the trigger lever and the main frame body, and the lever is adjacent to the main frame body. Elastic element. The detachable power assisting device of the wheelchair of claim 1, wherein the bracket unit further comprises a tripod and a tripod base having a plurality of engaging slots, the tripod being fastenable to the fastening slots Any of them. The detachable power assisting device of the wheelchair of claim 1, wherein the faucet unit further comprises a front tube pivotally coupled to the main frame body, a movable sleeve disposed in the front tube, and a top portion a standpipe for mounting the handle, an adjustment collar capable of fixing the standpipe to the front tube, and a front fork opposite to the standpipe disposed at the bottom of the front tube and pivotally securing the power wheel tube. The detachable power assist device of the wheelchair of claim 1, wherein the power unit further comprises a power storage component, and a control component electrically connected between the power storage component and the power component. The detachable power assisting device of the wheelchair of claim 1, wherein the auxiliary connecting unit further comprises a fixing plate disposed on the connecting plate and capable of being fixed The connecting tube of the extension frame. The detachable power assisting device of the wheelchair of claim 8, wherein the bracket unit further comprises a quick lock module capable of fixing the extension frame to the auxiliary connecting unit, the quick lock module having at least one The connecting pipe hole disposed in the connecting pipe, the extending frame hole disposed through the extending frame body, and a quick locking pin that can be inserted into the corresponding connecting pipe hole and the extending frame hole. The detachable power assisting device of the wheelchair of claim 9, wherein the connecting plate of the auxiliary connecting unit has a plurality of positioning holes, and the clamping claws are inserted into the connecting plate and respectively have a proximity Corresponding to the one of the positioning holes, the auxiliary connecting unit further includes a plurality of clamping claws respectively disposed in the clamping claws, and can pass through the corresponding locking holes, thereby being fastened and fixed to the corresponding positioning holes. Telescopic buckle.