CN214806110U

CN214806110U - Transfer auxiliary wheelchair

Info

Publication number: CN214806110U
Application number: CN202120718982.3U
Authority: CN
Inventors: 杨硕; 杜天玮; 薛强; 张晓鹏; 刘杭
Original assignee: Tianjin University of Science and Technology
Current assignee: Tianjin University of Science and Technology
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-11-23
Anticipated expiration: 2031-04-09

Abstract

The utility model discloses a transfer auxiliary wheelchair, which comprises a wheelchair body, an electric push rod, a lifting mechanism, a lifting platform, a seat plate displacement adjusting mechanism, a back plate overturning adjusting mechanism and a handrail, the front side of the car body can rotate, the rear side can slide and is provided with a lifting mechanism, an electric push rod can be rotatably arranged between the car body and the lifter, the front side of the lifting mechanism is rotatably provided with a lifting platform, the rear side of the lifting mechanism is fixedly provided with a lifting platform, the lifting platform is provided with a seat plate in a sliding way, the front end of the seat plate displacement adjusting mechanism is rotatably arranged on the lifting platform, the rear end of the seat plate displacement adjusting mechanism is fixedly arranged on the seat plate, the lifting platform is rotatably provided with a back plate, the lower end of the back plate overturning adjusting mechanism is fixedly arranged on the lifting platform, the upper end of the back plate overturning adjusting mechanism is rotatably arranged on the back plate, and the handrail is fixedly arranged on the lifting platform.

Description

Transfer auxiliary wheelchair

Technical Field

The utility model relates to the technical field of rehabilitation equipment, especially relate to a shift auxiliary wheelchair.

Background

At present, the number of disabled people is rapidly increased, and the lower limb dysfunction person is difficult to complete the transfer from a bed to a wheelchair and is easy to be limited. The mode that the attendant mostly adopts to lift and embrace is supplementary to be shifted, and this kind of mode not only wastes time and energy, has the potential safety hazard moreover. In addition, under the large background of caring about the disabled people in the whole society, the method improves the independent living ability of the disabled people, and is an important way for guaranteeing the physical and mental health of the disabled people.

At the present stage, most wheelchairs in the market have single functions and are not strong in adjustability, and the requirement for transferring from a bed to a chair cannot be well met. Therefore, it is important to develop a transfer-assisted wheelchair with controllable adjustment and simple operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an auxiliary transfer wheelchair aiming at the technical defects in the prior art.

For realizing the utility model discloses a technical scheme that the purpose adopted is:

a transfer auxiliary wheelchair comprises a wheelchair body, an electric push rod, a lifting mechanism, a lifting platform, a seat plate displacement adjusting mechanism, a back plate overturning adjusting mechanism and a handrail, the front side of the car body can rotate, the rear side can slide and be provided with a lifter, an electric push rod can be rotatably arranged between the car body and the lifter, the front side of the lifting mechanism is rotatably provided with a lifting platform, the rear side of the lifting mechanism is fixedly provided with a lifting platform, the lifting platform is provided with a seat plate in a sliding way, the front end of the seat plate displacement adjusting mechanism is rotatably arranged on the lifting platform, the rear end of the seat plate displacement adjusting mechanism is fixedly arranged on the seat plate, the lifting platform is rotatably provided with a back plate, the lower end of the back plate overturning adjusting mechanism is fixedly arranged on the lifting platform, the upper end of the back plate overturning adjusting mechanism is rotatably arranged on the back plate, and the handrail is fixedly arranged on the lifting platform.

The automobile body include body frame, two steamboats, two bull wheels, two brake mechanism, two leg support and two anti-back-tipping wheels, two steamboats rotationally set up body frame front end bottom, two bull wheels rotationally set up the body frame both sides, two brake mechanism rotationally set up the body frame both sides, two leg support rotationally set up the body frame front side upper end, two anti-back-tipping wheels rotationally set up body frame rear side lower extreme.

The lifting mechanism comprises an electric push rod connecting rod, a right inner shearing fork arm, a left inner shearing fork arm, a right outer shearing fork arm, a left outer shearing fork arm, a shearing fork arm connecting rod, two lower guide wheels, two upper guide wheels, a C-shaped guide rail and a chassis, wherein the electric push rod connecting rod is fixedly arranged between the right inner shearing fork arm and the left inner shearing fork arm, the right outer shearing fork arm is rotatably connected to the right inner shearing fork arm, the left outer shearing fork arm is rotatably connected to the left inner shearing fork arm, the front ends of the right inner shearing fork arm and the left inner shearing fork arm are rotatably connected to the front side of the chassis, the rear ends of the right inner shearing fork arm and the left inner shearing fork arm are rotatably provided with the two upper guide wheels, the two upper guide wheels are slidably arranged in the C-shaped guide rail, and the rear ends of the right outer shearing fork arm and the left outer shearing fork arm are rotatably provided with the two lower guide wheels, the two lower guide wheels are connected to the underframe in a sliding manner.

Lift platform include landing slab, two guide rails and two gyro wheel grooves, the landing slab on be provided with two guide rail grooves, two guide rail inslot be provided with fixedly two guide rails, the left and right sides in two guide rail grooves be provided with two gyro wheel grooves.

The seat board include seat board frame, two six hole sliders and two gyro wheels, two six hole sliders set up fixedly seat board frame bottom front side, two gyro wheels set up fixedly seat board frame bottom rear side.

Seat displacement adjustment mechanism including removing shell, first big straight-tooth bevel gear, first little straight-tooth bevel gear, long screw, fixed shell and first crank, removal shell in rotationally be provided with first big straight-tooth bevel gear and first little straight-tooth bevel gear, first big straight-tooth bevel gear and first little straight-tooth bevel gear diaxon between the crossing angle become 90 and mesh, long screw set up fixedly first little straight-tooth bevel gear on, long screw rotationally set up fixed shell in, first crank set up fixedly big straight-tooth bevel gear on.

The backplate include backplate body, back of the body pad and slide way groove, the backplate body rotationally set up the hinge on, the back of the body pad set up fixedly the backplate body on, the backup plate on be provided with the slide way groove.

Backplate upset adjustment mechanism include mechanism shell, the big straight-tooth bevel gear of second, the little straight-tooth bevel gear of second, short screw rod, removal nut, crooked connecting rod and second crank, the mechanism shell in rotationally be provided with the big straight-tooth bevel gear of second and the little straight-tooth bevel gear of second, the big straight-tooth bevel gear of second and the little straight-tooth bevel gear diaxon between the angle of intersection become 90 and mesh, the short screw rod set up fixedly the little straight-tooth bevel gear of second on, the removal nut rotationally set up the short screw rod on, crooked connecting rod rotationally set up removal nut on, the second crank set up fixedly the big straight-tooth bevel gear of second on.

The handrail comprises a handrail frame rod, an auxiliary handle and a handrail pad, wherein the auxiliary handle is fixedly arranged at the rear end of the handrail frame rod, and the handrail pad is fixedly arranged at the upper end of the handrail frame rod.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a shift auxiliary wheel chair, convenient operation, stable in structure to low limbs dysfunction person, can help its completion from the bed to the transfer demand of wheelchair. The lifting mechanism enables the transfer auxiliary wheelchair to have strong adaptability and can be adjusted for users with different heights and beds with different heights. The user can automatically complete the transfer from the bed to the wheelchair or from the wheelchair to the bed by means of the armrests, the seat plate displacement adjusting mechanism and the back plate and back plate overturning adjusting mechanism. The braking device and the anti-back balance rod can well ensure the safety of the user in the transferring process. The turnover angle of the back plate can be adjusted according to the comfortable requirement of a user. In addition, the transfer auxiliary wheelchair also has the transfer transportation function of a common wheelchair.

Drawings

FIG. 1 is a front side view of a transfer assist wheelchair of the present invention;

FIG. 2 is a rear side view of the transfer assist wheelchair of the present invention;

FIG. 3 is a schematic view of a transfer state of the transfer assist wheelchair;

FIG. 4 is a schematic view of a vehicle body;

FIG. 5 is a schematic view of the elevator mechanism;

FIG. 6 is a schematic view of the lift platform;

FIG. 7 is a schematic view of a backing plate;

FIG. 8 is a schematic view of a seat plate;

FIG. 9 is a schematic view of a back plate flip adjustment mechanism;

FIG. 10 is a schematic view of the seat plate displacement adjustment mechanism;

FIG. 11 is a schematic view of an armrest;

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, 2 and 3, the transfer assist wheelchair of the present invention comprises a body 1, a lifting mechanism 2 rotatably provided on the body 1 at a front side and slidably provided at a rear side, an electric push rod 3 which is rotatablely arranged between the vehicle body 1 and the lifting mechanism 2, a lifting platform 4 which is fixed at the front side and is arranged on the lifting mechanism 2 at the rear side in a sliding way, a seat plate 5 which is arranged on the lifting platform 4 in a sliding way, a seat plate displacement adjusting mechanism 6 which is arranged on the lifting platform 4 in a rotating way at the front end and is fixedly arranged on the seat plate 5 at the rear end, a backboard 7 rotatably arranged on the lifting platform 4, a backboard overturning adjusting mechanism 8 with the lower end fixedly arranged on the lifting platform 4 and the upper end rotatably arranged on the backboard 7, and a handrail 9 fixedly arranged on the lifting platform 4.

The transfer-assisted wheelchair of the utility model can help the lower limb dysfunction person to complete the conversion from the bed to the wheelchair. Specifically, as shown in fig. 1, 2 and 3, the caregiver pushes the transfer-assisting wheelchair to the front of the user's bed, drives the electric push rod 3 to drive the lifting mechanism 2 to make the lifting platform 4 level with the bed height, rotates the second crank 86 to turn the back plate 7 backward to be level with the bed, rotates the first crank 65 to slide the seat plate 5 backward, the user holds the armrest 9 to move the body onto the seat plate 5, rotates the first crank 65 to slide the seat plate 5 forward, rotates the second crank 86 to turn the back plate 7 forward, adjusts the lifting platform 4 to a proper height, and completes the transfer of the user.

Further, in order to improve the stability of the transfer-assisting wheelchair, a brake mechanism 13 and a backward tilting prevention wheel 15 are provided on the body 1, as shown in fig. 1, 2 and 4, the body 1 includes a main frame 10, two small wheels 11, two large wheels 12, two brake mechanisms 13, two leg rests 14 and two backward tilting prevention wheels 15, the two small wheels 11 are rotatably provided at the bottom of the front end of the main frame 10, the two large wheels 12 are rotatably provided at both sides of the main frame 10, the two brake mechanisms 13 are rotatably provided at both sides of the main frame, the two leg rests 14 are rotatably provided at the upper end of the front side of the main frame 10, and the two backward tilting prevention wheels 15 are rotatably provided at the lower end of the rear side of the main frame 10. When the wheelchair is transferred, a nursing person pushes the transfer auxiliary wheelchair to the front of a bed of a user, firstly rotates the two brake mechanisms 13 to lock the two large wheels 12, and then tightly tightens the bolts on the two anti-backward-tilting wheels 15 to prevent the auxiliary wheelchair from sliding and tilting backwards in the transfer process.

Further, in order to enhance the adaptability of the auxiliary wheelchair, the lifting platform 4 can be adapted to users at different positions by adjusting the lifting mechanism 2, as shown in fig. 1, fig. 3, fig. 5 and fig. 6, the lifting mechanism 2 includes an electric push rod connecting rod 20, a right inner scissors arm 21, a left inner scissors arm 22, a right outer scissors arm 23, a left outer scissors arm 24, a scissors arm connecting rod 25, two lower guide wheels 26, two upper guide wheels 27, a C-shaped guide rail 28 and a chassis 29, the electric push rod connecting rod 20 is fixedly arranged between the right inner scissors arm 21 and the left inner scissors arm 22, the right outer scissors arm 22 is rotatably connected to the right inner scissors arm 21, the left outer scissors arm 24 is rotatably connected to the left inner scissors arm 23, the front ends of the right inner scissors arm 22 and the left inner scissors arm 21 are rotatably connected to the front side of the chassis 29, the two upper guide wheels 27 are rotatably arranged at the rear ends of the right inner scissor arm 21 and the left inner scissor arm 22, the two upper guide wheels 27 are slidably arranged in the C-shaped guide rail 28, the two lower guide wheels 26 are rotatably arranged at the rear ends of the right outer scissor arm 23 and the left outer scissor arm 24, and the two lower guide wheels 26 are slidably connected to the bottom frame 29. During adjustment, the electric push rod 3 is driven, and the electric push rod 3 drives the lifting mechanism 2 to adjust the lifting platform 4 to a proper height.

Further, in order to accomplish the displacement conversion of the user and to improve the comfort of the device, the transfer assist wheelchair of the present invention can realize the turnover of the back plate 7 by adjusting the back plate turnover adjusting mechanism 8, as shown in fig. 1, fig. 3, fig. 7 and fig. 9, the back plate turnover adjusting mechanism 8 includes a mechanism housing 80, a second large spur bevel gear 81, a second small spur bevel gear 82, a short screw 83, a moving nut 84, a curved link 85 and a second crank 86, the mechanism housing 80 is rotatably provided with the second large spur bevel gear 81 and the second small spur bevel gear 82, the intersection angle between the two shafts of the second large spur bevel gear 81 and the second small spur bevel gear 82 is 90 ° and is engaged, the short screw 83 is fixedly disposed on the second small spur bevel gear 82, the moving nut 84 is rotatably disposed on the short screw 83, the moving nut 84 is slidably disposed in the mechanism housing 80, the curved link 85 is rotatably disposed on the moving nut 84, and the second rocker 86 is fixedly disposed on the large straight bevel gear 81. When adjusting, the second rocking bar 86 is rotated, the bending connecting rod 85 drives the backboard 7 to turn over, and the user adjusts the backboard 7 to a proper position according to the requirement.

Further, for the convenience of user's completion displacement conversion and promotion user experience, the utility model discloses a shift auxiliary wheelchair can realize seat 5's slip through adjusting seat displacement adjustment mechanism 6, as shown in fig. 1, fig. 3, fig. 6, fig. 8 and fig. 10, seat 5 include seat frame 50, two six hole sliders 51 and two gyro wheels 52, two six hole sliders 51 set up fixedly seat frame 50 bottom front side, two gyro wheels 52 set up fixedly seat frame 50 bottom rear side. The seat plate displacement adjusting mechanism 6 comprises a movable shell 60, a first large straight bevel gear 61, a first small straight bevel gear 62, a long screw 63, a fixed shell 64 and a first crank 65, wherein the movable shell 60 is internally and rotatably provided with the first large straight bevel gear 61 and the first small straight bevel gear 62, the crossed angle between the two shafts of the first large straight bevel gear 61 and the first small straight bevel gear 62 is 90 degrees and is meshed, the long screw 63 is fixedly arranged on the first small straight bevel gear 62, the long screw 63 is rotatably arranged in the fixed shell 64, and the first rocker 65 is fixedly arranged on the large straight bevel gear 61. During adjustment, the first rocker 65 is rotated, the movable housing 60 drives the seat plate 5 to move axially relative to the fixed housing 65, and the user adjusts the seat plate 5 to a proper position as required.

Further, in order to improve the safety and convenience of the transfer-assisting wheelchair, handrails 9 are disposed on both sides of the lifting platform, as shown in fig. 1, 2, 3 and 11, the handrails 9 include a handrail frame rod 90, an assisting handle 91 and a handrail pad 92, the assisting handle 91 is fixedly disposed at the rear end of the handrail frame rod 90, and the handrail pad 92 is fixedly disposed at the upper end of the handrail frame rod 90. When transferring, the user can move the body to the seat plate 5 by pulling the handrail 9, thereby completing the displacement conversion.

To sum up, the utility model discloses a shift auxiliary wheelchair, it is easy and simple to handle, higher security and stability have. To the crowd of low limbs dysfunction, the utility model discloses a shift auxiliary device can help it to accomplish the transfer activity, alleviates nursing staff's work burden. The lifting mechanism enables the transfer auxiliary wheelchair to have stronger adaptability and can transfer users at different height positions; the back plate overturning adjusting mechanism and the seat plate displacement adjusting mechanism improve the adaptability of the transfer auxiliary wheelchair; the anti-back-tipping wheels and the armrests ensure the safety of the user during the transfer process. Therefore the utility model discloses a multi-functional transfer auxiliary device can let the more convenient, safe realization of user shift and multiple functions such as the conversion of gesture, and help low limbs dysfunction person carries out diversified shifting, lets the more convenient various activities of carrying on of user.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A transfer auxiliary wheelchair is characterized by comprising a wheelchair body, an electric push rod, a lifting mechanism, a lifting platform, a seat plate displacement adjusting mechanism, a back plate overturning adjusting mechanism and a handrail, the front side of the car body can rotate, the rear side can slide and is provided with a lifting mechanism, an electric push rod can be rotatably arranged between the car body and the lifter, the front side of the lifting mechanism is rotatably provided with a lifting platform, the rear side of the lifting mechanism is fixedly provided with a lifting platform, the lifting platform is provided with a seat plate in a sliding way, the front end of the seat plate displacement adjusting mechanism is rotatably arranged on the lifting platform, the rear end of the seat plate displacement adjusting mechanism is fixedly arranged on the seat plate, the lifting platform is rotatably provided with a back plate, the lower end of the back plate overturning adjusting mechanism is fixedly arranged on the lifting platform, the upper end of the back plate overturning adjusting mechanism is rotatably arranged on the back plate, and the handrail is fixedly arranged on the lifting platform.

2. The transfer assist wheelchair as claimed in claim 1, wherein the body comprises a main frame, two small wheels rotatably provided at a bottom of a front end of the main frame, two large wheels rotatably provided at both sides of the main frame, two brake mechanisms rotatably provided at both sides of the main frame, two leg rests rotatably provided at an upper end of a front side of the main frame, and two caster wheels rotatably provided at a lower end of a rear side of the main frame.

3. The transfer assist wheelchair as claimed in claim 1, wherein the lifting mechanism comprises an electric push rod connecting rod, a right inner scissor arm, a left inner scissor arm, a right outer scissor arm, a left outer scissor arm, a scissor arm connecting rod, two lower guide wheels, two upper guide wheels, a C-shaped guide rail and a chassis, the electric push rod connecting rod is fixedly arranged between the right inner scissor arm and the left inner scissor arm, the right outer scissor arm is rotatably connected to the right inner scissor arm, the left outer scissor arm is rotatably connected to the left inner scissor arm, the front ends of the right inner scissor arm and the left inner scissor arm are rotatably connected to the front side of the chassis, the rear ends of the right inner scissor arm and the left inner scissor arm are rotatably provided with the two upper guide wheels, the two upper guide wheels are arranged in the C-shaped guide rail, the rear ends of the right side outer shearing fork arm and the left side outer shearing fork arm are rotatably provided with the two lower guide wheels, and the two lower guide wheels are connected to the underframe in a sliding manner.

4. The transfer assist wheelchair as claimed in claim 1, wherein the elevating platform comprises a platform plate, two guide rails and two roller grooves, the platform plate is provided with two guide rail grooves, the two guide rails are fixedly provided in the two guide rail grooves, and the two roller grooves are provided on left and right sides of the two guide rail grooves.

5. The transfer assist wheelchair as claimed in claim 1, wherein the seat comprises a seat frame, two six-hole sliders fixedly disposed at a front side of a bottom end of the seat frame, and two rollers fixedly disposed at a rear side of the bottom end of the seat frame.

6. The transfer assist wheelchair as claimed in claim 1, wherein the seat displacement adjusting mechanism comprises a movable housing, a first large bevel gear, a first small bevel gear, a long screw, a fixed housing and a first crank, the first large bevel gear and the first small bevel gear are rotatably provided in the movable housing, an intersection angle between both axes of the first large bevel gear and the first small bevel gear is 90 ° and is engaged with each other, the long screw is fixedly provided on the first small bevel gear, the long screw is rotatably provided in the fixed housing, and the first crank is fixedly provided on the large bevel gear.

7. The transfer assist wheelchair of claim 1 wherein said back plate includes a back plate body, a back pad and roller channels, said back pad being fixedly disposed on said back plate body, said back plate body having roller channels disposed thereon.

8. The transfer assist wheelchair as claimed in claim 1, wherein the back plate turnover adjusting mechanism comprises a mechanism housing, a second large bevel gear, a second small bevel gear, a short screw, a traveling nut, a curved link, and a second crank, the second large bevel gear and the second small bevel gear being rotatably disposed in the mechanism housing, the second large bevel gear and the second small bevel gear being engaged with each other at an angle of 90 ° with respect to the intersection angle between the two shafts, the short screw being fixedly disposed on the second small bevel gear, the traveling nut being rotatably disposed on the short screw, the curved link being rotatably disposed on the traveling nut, and the second crank being fixedly disposed on the second large bevel gear.

9. A transfer assist wheelchair as claimed in claim 1, wherein the armrest comprises an armrest frame rod, an assist handle fixedly provided at a rear end of the armrest frame rod, and an armrest pad fixedly provided at an upper end of the armrest frame rod.