CN214806122U - Wheelchair capable of climbing stairs - Google Patents
Wheelchair capable of climbing stairs Download PDFInfo
- Publication number
- CN214806122U CN214806122U CN202120343847.5U CN202120343847U CN214806122U CN 214806122 U CN214806122 U CN 214806122U CN 202120343847 U CN202120343847 U CN 202120343847U CN 214806122 U CN214806122 U CN 214806122U
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- wheelchair
- frame
- sliding
- driving
- support
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- 230000009194 climbing Effects 0.000 title claims abstract description 13
- 230000000712 assembly Effects 0.000 claims abstract description 16
- 238000000429 assembly Methods 0.000 claims abstract description 16
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000013459 approach Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to a stair climbing wheelchair, which comprises a wheelchair frame, a front and back length adjusting mechanism and a traveling mechanism; the wheelchair frame comprises a bracket, a chair back and a seat plate, wherein the chair back and the seat plate are fixedly arranged on the bracket; the travelling mechanism comprises four wheel pairs, four lifting assemblies and a travelling driving piece, wherein two lifting assemblies are arranged in front of the lower side of the bracket in parallel, the other two lifting assemblies are arranged in rear of the lower side of the bracket in parallel, the four wheel pairs are arranged in the lifting assemblies in a one-to-one correspondence manner, and the travelling driving piece drives at least one wheel pair to rotate; the front and rear length adjusting mechanism comprises a first sliding rail, a first sliding frame and a first driving mechanism, the first sliding rail is fixedly mounted on the front portion of the lower side of the support, the first sliding frame is mounted on the first sliding rail in a front and rear sliding mode, when the first sliding frame climbs a building, at least one group of wheel pairs can be supported in the front and rear direction, the seat plate on the wheelchair frame is guaranteed to be basically in a horizontal state, the center of gravity is kept stable and the safety of personnel is guaranteed all the time, and the safety risk is reduced.
Description
Technical Field
The utility model relates to an auxiliary walking equipment technical field especially relates to a climb stair wheelchair.
Background
Some old people and disabled people use the wheelchair to assist in movement, and the function of going upstairs and downstairs of the wheelchair is very important in urban life. The wheelchairs with the stair climbing function in the current market have some defects, and some wheelchairs need a strong healthy person to assist in going upstairs and downstairs, so that the wheelchair is poor in independent controllability; some wheelchairs are too complicated in transition between a flat ground state and a going upstairs and downstairs state, and are inconvenient to operate; when some wheelchairs go up and down steps, the wheelchairs have rapid swinging of an angle and a gravity center, and the safety is insufficient; some wheelchairs go upstairs and downstairs and have higher gravity centers and overturn risks.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a wheelchair for climbing stairs, which solves the technical problem of insufficient safety when the wheelchair climbs stairs in the prior art.
The utility model provides a stair-climbing wheelchair, which comprises a wheelchair frame, a front-back length adjusting mechanism and a traveling mechanism
The wheelchair frame comprises a support, a chair back and a seat plate, wherein the chair back and the seat plate are fixedly arranged on the support;
the travelling mechanism comprises four wheel pairs, four lifting assemblies and a travelling driving piece, wherein two lifting assemblies are arranged in front of the lower side of the support in parallel, the other two lifting assemblies are arranged in rear of the lower side of the support in parallel, the four wheel pairs are arranged in the lifting assemblies in a one-to-one correspondence manner, each lifting assembly is used for driving the corresponding wheel pair to lift, and the travelling driving piece drives at least one wheel pair to rotate;
the front-back length adjusting mechanism comprises a first sliding rail, a first sliding frame and a first driving mechanism, the first sliding rail is fixedly mounted at the front part of the lower side of the support, the first sliding frame can be mounted on the first sliding rail in a front-back sliding mode, and the first driving mechanism is used for driving the first sliding frame to slide along the first sliding rail.
Furthermore, the lifting component comprises an upper supporting beam, a lower supporting beam, two groups of first supporting rods, two groups of second supporting rods and a lifting driving piece, the upper supporting beam and the lower supporting beam are arranged in parallel at intervals up and down, each group of the first supporting rods are correspondingly hinged with one group of the second supporting rods to form a hinged chain, the first supporting rod and the corresponding second supporting rod are hinged to form a hinge point, the upper ends of the two hinge chains are respectively installed at the two ends of the upper supporting beam, the lower ends of the two hinge chains are respectively installed at the two ends of the lower supporting beam, the wheel pair is rotatable install in the both ends of supporting beam down, the lift driving piece is through driving two the pin joint is close to each other or is kept away from in order to change go up the supporting beam with the interval of supporting beam down is located the anterior last supporting beam fixed connection in the lower extreme of first slip frame of support downside.
Further, the lift driving piece includes driving motor, two-way lead screw, a plurality of guide arm and two sliders, driving motor fixed mounting in go up the supporting beam with between the supporting beam, two-way lead screw drive connect in driving motor and with go up supporting beam parallel arrangement, the both ends of two-way lead screw are formed with the different external screw thread of direction soon respectively, two the slider slidable threaded connection respectively in the both ends of two-way lead screw, a plurality of guide arm fixed connection in driving motor's both ends, the guide arm with go up supporting beam parallel arrangement, slider slidable cover is located the guide arm.
Further, the wheelchair frame still includes back of the chair altitude mixture control mechanism, back of the chair altitude mixture control mechanism includes second slide rail, second slip frame and second actuating mechanism, the second slide rail slope install in the seat, second slip frame slidable install in the second slide rail, the back of the chair with second slip frame fixed connection, second actuating mechanism is used for the drive the second slip frame is followed the second slide rail slides.
Furthermore, the wheelchair frame further comprises a pushing handle, and the pushing handle is hinged to the rear side of the chair back.
Furthermore, the wheelchair frame further comprises a pedal frame and a pedal, the pedal frame is fixedly installed on the front side of the support in a downward inclined mode, and the pedal is installed at the lower end of the pedal frame.
The utility model discloses when using, the height of four wheel pairs can be adjusted independently through the lifting unit who corresponds, when climbing the building, respectively have at least a set of wheel pair to play the supporting role around can guaranteeing, guarantees the seat on the wheelchair frame and guarantees the horizontality basically, and then remains the focus throughout and stabilize and personnel's safety, has reduced safe risk.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made of preferred embodiments of the present invention.
Drawings
Fig. 1 is a schematic perspective view of a wheelchair for climbing stairs according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of another view angle of the embodiment of the present invention relative to fig. 1;
fig. 3 is a schematic structural view of a lifting assembly in an embodiment of the present invention;
FIG. 4 is a schematic structural view of a chair back height adjusting mechanism according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the front-rear length adjustment mechanism in the embodiment of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
As shown in fig. 1, the embodiment of the present application provides a stair climbing wheelchair, which includes a wheelchair frame 1, a front-rear length adjustment mechanism 2, and a traveling mechanism 3.
Wherein, wheelchair frame 1 includes support 11, back of the chair 12 and seat 13, back of the chair 11 with seat 13 fixed mounting in on the support 11, in the preferred embodiment of this application, seat 13 is the level setting according to the use habit, and back of the chair 12 is vertical setting.
The traveling mechanism 3 comprises four wheel pairs 31, four lifting assemblies 32 and a traveling driving member 33, wherein two lifting assemblies 32 are arranged in parallel at the front part of the lower side of the support 11, the other two lifting assemblies 32 are arranged in parallel at the rear part of the lower side of the support 11, the four wheel pairs 31 are correspondingly arranged in the lifting assemblies 32 one by one, each lifting assembly 32 is used for driving the corresponding wheel pair 31 to ascend and descend, and the traveling driving member 33 drives at least one wheel pair 31 to rotate.
In the embodiment of the present application, the travel driving member 33 is a travel driving motor, and the travel driving motor drives any one of the four wheel pairs 31 to rotate so as to drive the wheelchair to move forward or backward.
For convenience of description, in the present application, four wheel pairs are named as a first wheel pair 311, a second wheel pair 312, a third wheel pair 313 and a fourth wheel pair 314 from front to back, wherein the first wheel pair 311 and the second wheel pair 312 are located at the lower front of the bracket 11, and the third wheel pair 313 and the fourth wheel pair 314 are located at the lower rear of the bracket 11.
The front-back length adjusting mechanism 2 comprises a first slide rail 21, a first sliding frame 22 and a first driving mechanism 23, the first slide rail 21 is fixedly mounted at the front part of the lower side of the bracket 11, the first sliding frame 22 is mounted on the first slide rail 21 in a front-back sliding manner, and the first driving mechanism 23 is used for driving the first sliding frame 22 to slide along the first slide rail 21.
In the embodiment of the present application, the first driving mechanism 23 may be a telescopic cylinder or a linear motor, in this embodiment, the first driving mechanism 23 includes a first lead screw motor 231 and a first nut 232, the first lead screw motor 231 is horizontally installed on the first slide rail 21, the first nut 232 is fixedly installed on a lead screw of the first lead screw motor 231, and the lead screw of the first lead screw motor 231 rotates to drive the first sliding frame 22 to slide.
In the embodiment of the present application, each lifting assembly 32 has the same structure, taking the lifting assembly corresponding to the first wheel pair as an example, the lifting assembly 32 includes an upper supporting beam 321, a lower supporting beam 322, two sets of first supporting rods 323, two sets of second supporting rods 324 and a lifting driving member 325, the upper supporting beam 321 and the lower supporting beam 322 are arranged at an interval in parallel, each set of the first supporting rods 323 correspond to each other one by one and are set of hinge chains 326 are formed between the second supporting rods 324 in a hinged manner, the first supporting rods 323 and the corresponding second supporting rods 324 are hinged to form hinge points, two upper ends of the hinge chains 326 are respectively installed at two ends of the upper supporting beam 321, two lower ends of the hinge chains 326 are respectively installed at two ends of the lower supporting beam 322, the first wheel pair 311 is rotatably installed at two ends of the lower supporting beam 322, the lifting driving member 325 drives two hinge points to be close to or far away from each other to change the upper supporting beam 321 321 and the lower support beam 322, wherein the upper support beam 321 positioned at the lower front portion of the bracket 11 is fixedly connected to the lower end of the first sliding frame 22.
Specifically, in the embodiment of this application, lift driving piece 325 includes driving motor 3251, two-way lead screw 3252, a plurality of guide rod 3253 and two sliders 3254, driving motor 3251 fixed mounting in go up supporting beam 321 with between the supporting beam 322, two-way lead screw 3252 drive connect in driving motor 3251 and with go up supporting beam 321 parallel arrangement, two-way lead screw 3252's both ends are formed with the different external screw thread of rotation respectively, two slider 3254 slidable threaded connection respectively in two-way lead screw 3252's both ends, a plurality of guide rod 3253 fixed connection in driving motor 3251's both ends, guide rod 3253 with go up supporting beam 321 parallel arrangement, slider 3254 slidable cover is located guide rod 3253.
When the driving motor 3251 rotates, the driving motor 3251 drives the bidirectional screw rod 3252 to rotate, and when the sliding blocks 3254 at the two ends of the bidirectional screw rod 3252 move inwards to approach each other at the same time, the two hinge points approach each other, the hinge chain 326 is folded, the included angle between the first support rod 323 and the corresponding second support rod 324 is reduced, and the lower support beam 322 approaches the upper support beam 321 to drive the first wheel pair 311 to ascend; when the sliding blocks 3254 at the two ends of the bidirectional screw rod 3252 move towards the two ends to be away from each other, the two hinge points are away from each other, the hinge chain 326 is opened, the included angle between the first support rod 323 and the corresponding second support rod 324 is increased, and the lower support beam 322 moves towards the upper support beam 321 away from each other to drive the first wheel pair 311 to descend.
In some embodiments of the present application, a drive switch may be separately provided for each drive motor to control the on/off and steering of the drive motor, the drive switch may be directly electrically connected to the wheelchair through a wire, and a user directly controls the lifting of the wheel pair through the drive switch on the wheelchair; in other embodiments of this application, this drive switch also can be a remote controller, and the remote controller passes through wireless connection modes such as bluetooth and is connected with driving motor to control driving motor's switch and turn to, and then control wheel pair lift.
In the preferred embodiment of this application, wheelchair frame 1 still includes back of the chair height adjustment mechanism 14, back of the chair height adjustment mechanism 14 includes second slide rail 141, second sideslip frame 142 and second actuating mechanism 143, second slide rail 141 slope install in seat 13, second sideslip frame 142 slidable install in second slide rail 141, back of the chair 12 with second sideslip frame 142 fixed connection, second actuating mechanism 143 is used for the drive second sideslip frame 142 is followed second slide rail 141 slides.
In the embodiment of the present application, the second driving mechanism 143 may be a telescopic cylinder or a linear motor, in this embodiment, the second driving mechanism 143 includes a second lead screw motor 1431 and a second nut 1432, the second lead screw motor 1431 is vertically installed on the second slide rail 141, the second nut 1432 is fixedly installed on a lead screw of the second lead screw motor 1431, and the lead screw of the second lead screw motor 1431 rotates to drive the chair back 12 to slide.
In order to facilitate the pushing of the wheelchair, the wheelchair frame 1 further comprises a pushing handle 15, and the pushing handle 15 is hinged to the rear side of the chair back 12.
In order to facilitate the comfort of the feet of the wheelchair user during use, the wheelchair frame 1 further comprises a pedal frame 161 and a pedal 162, wherein the pedal frame 161 is fixedly arranged at the front side of the bracket 11 in a downward inclined mode, and the pedal 162 is arranged at the lower end of the pedal frame 161.
When the wheelchair for climbing stairs provided by the embodiment of the application climbs stairs, the first lead screw motor 231 is started firstly, so that the distance between the second wheel pair 312 and the third wheel pair 313 is integral multiple of a single-stage step of the stairs, in the forward movement process of the wheelchair, when the first wheel pair 311 is about to contact with the stair steps, the driving motor 3251 corresponding to the first wheel pair 311 is started to work, so that the first wheel pair 311 is lifted to the height of the upper step, the wheelchair continues to move, the first wheel pair 311 is supported in a contact manner with the upper step, then the second wheel pair 312 is lifted and falls on the same step as the first wheel pair 311, so that the wheelchair alternately climbs in sequence until the third wheel pair 313 approaches the stair steps, the driving motor 3251 corresponding to the third wheel pair 313 is started to work, so that the third wheel pair 313 is lifted to the height of the upper step, the wheelchair continues to move, the third wheel pair 313 is supported in a contact manner with the upper step, then the fourth wheel pair 312 is lifted and falls on the same step as the third wheel pair 313, therefore, the wheelchair integrally climbs corresponding to the first-level stairs, and the wheelchair can climb the stairs by repeating the processes.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (6)
1. A stair climbing wheelchair is characterized by comprising a wheelchair frame, a front-back length adjusting mechanism and a traveling mechanism
The wheelchair frame comprises a support, a chair back and a seat plate, wherein the chair back and the seat plate are fixedly arranged on the support;
the travelling mechanism comprises four wheel pairs, four lifting assemblies and a travelling driving piece, wherein two lifting assemblies are arranged in front of the lower side of the support in parallel, the other two lifting assemblies are arranged in rear of the lower side of the support in parallel, the four wheel pairs are arranged in the lifting assemblies in a one-to-one correspondence manner, each lifting assembly is used for driving the corresponding wheel pair to lift, and the travelling driving piece drives at least one wheel pair to rotate;
the front-back length adjusting mechanism comprises a first sliding rail, a first sliding frame and a first driving mechanism, the first sliding rail is fixedly mounted at the front part of the lower side of the support, the first sliding frame can be mounted on the first sliding rail in a front-back sliding mode, and the first driving mechanism is used for driving the first sliding frame to slide along the first sliding rail.
2. The wheelchair as claimed in claim 1, wherein the lifting assembly comprises an upper support beam, a lower support beam, two sets of first support rods, two sets of second support rods, and a lifting driving member, the upper support beam and the lower support beam are spaced apart from each other in parallel, each set of first support rods and one set of second support rods are hinged to each other to form a hinge chain, the first support rods and the corresponding second support rods are hinged to form hinge points, upper ends of the two hinge chains are respectively mounted to two ends of the upper support beam, lower ends of the two hinge chains are respectively mounted to two ends of the lower support beam, the wheel sets are rotatably mounted to two ends of the lower support beam, the lifting driving member drives the two hinge points to move toward or away from each other to change the distance between the upper support beam and the lower support beam, and the upper supporting beam positioned at the front part of the lower side of the bracket is fixedly connected with the lower end of the first sliding frame.
3. The wheelchair as claimed in claim 2, wherein the lifting driving member comprises a driving motor, a bi-directional screw rod, a plurality of guide rods and two sliding blocks, the driving motor is fixedly installed between the upper supporting beam and the lower supporting beam, the bi-directional screw rod is drivingly connected to the driving motor and arranged in parallel with the upper supporting beam, external threads with different rotation directions are respectively formed at two ends of the bi-directional screw rod, the two sliding blocks are respectively slidably and threadedly connected to two ends of the bi-directional screw rod, the plurality of guide rods are fixedly connected to two ends of the driving motor, the guide rods are arranged in parallel with the upper supporting beam, and the guide rods are slidably sleeved on the sliding blocks.
4. The stair climbing wheelchair as claimed in claim 1, wherein the wheelchair frame further comprises a chair back height adjusting mechanism, the chair back height adjusting mechanism comprises a second slide rail, a second sliding frame and a second driving mechanism, the second slide rail is obliquely mounted on the seat, the second sliding frame is slidably mounted on the second slide rail, the chair back is fixedly connected with the second sliding frame, and the second driving mechanism is used for driving the second sliding frame to slide along the second slide rail.
5. The stair climbing wheelchair of claim 1 wherein the wheelchair frame further comprises a push handle hinged to a rear side of the seat back.
6. The stair climbing wheelchair as claimed in claim 1, wherein the wheelchair frame further comprises a pedal frame fixedly installed at a front side of the bracket to be inclined downward, and a pedal installed at a lower end of the pedal frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120343847.5U CN214806122U (en) | 2021-02-05 | 2021-02-05 | Wheelchair capable of climbing stairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120343847.5U CN214806122U (en) | 2021-02-05 | 2021-02-05 | Wheelchair capable of climbing stairs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214806122U true CN214806122U (en) | 2021-11-23 |
Family
ID=78881195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120343847.5U Expired - Fee Related CN214806122U (en) | 2021-02-05 | 2021-02-05 | Wheelchair capable of climbing stairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214806122U (en) |
-
2021
- 2021-02-05 CN CN202120343847.5U patent/CN214806122U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |