CN115068224A - Transfer auxiliary wheelchair - Google Patents

Abstract

The invention discloses a transfer auxiliary wheelchair, which comprises a wheelchair body, an electric push rod, a displacement link mechanism, a cushion, a back cushion, a trolley handle, a back cushion angle adjusting mechanism, a handrail, a fulcrum displacement mechanism, a pedal and an auxiliary stabilizing mechanism, wherein the wheelchair body is fixedly provided with the displacement link mechanism, the electric push rod is rotatably arranged between the wheelchair body and the displacement link mechanism, the front end of the displacement link mechanism is fixedly provided with the cushion, the back cushion is rotatably arranged at the rear side of the cushion, the trolley handle is fixedly arranged at two sides of the back cushion, the back cushion angle adjusting mechanism is fixedly arranged at two sides of the cushion, the rear end of the handrail is rotatably arranged in the middle of the back cushion, the front end of the handrail is rotatably arranged on the back cushion angle adjusting mechanism, the fulcrum displacement mechanism is fixedly arranged at the lower end of the wheelchair body, the pedal is fixedly arranged at the front end of the fulcrum displacement mechanism, the auxiliary stabilizing mechanism is detachably arranged at the rear end of the vehicle body.

Description

Transfer auxiliary wheelchair

Technical Field

The invention relates to the technical field of rehabilitation instruments, in particular to a transfer auxiliary wheelchair.

Background

At present, the number of disabled people is rapidly increased, and the lower limb dysfunction patients are difficult to transfer from beds to wheelchairs and are easy to limit. 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.

Disclosure of Invention

The invention aims to provide an auxiliary transfer wheelchair aiming at the technical defects in the prior art.

The technical scheme adopted for realizing the purpose of the invention is as follows:

a transfer auxiliary wheelchair is characterized by comprising a wheelchair body, an electric push rod, a displacement link mechanism, a cushion, a back cushion, a cart handle, a back cushion angle adjusting mechanism, a handrail, a fulcrum displacement mechanism, pedals and an auxiliary stabilizing mechanism, wherein the upper end of the wheelchair body is fixedly provided with the displacement link mechanism, the wheelchair body and the displacement link mechanism are rotatably provided with the electric push rod, the front end of the displacement link mechanism is fixedly provided with the cushion, the rear side of the cushion is rotatably provided with the back cushion, the left side and the right side of the back cushion back are fixedly provided with the cart handle, the two sides of the cushion are fixedly provided with the back cushion angle adjusting mechanism, the rear end of the handrail is rotatably arranged in the middle of the back cushion, the front end of the handrail is rotatably arranged on the back cushion angle adjusting mechanism, the fulcrum displacement mechanism is fixedly arranged at the lower end of the wheelchair body, the pedal is fixedly arranged at the front end of the fulcrum displacement mechanism, and the auxiliary stabilizing mechanism is detachably arranged at the rear end of the vehicle body.

The body include body frame, two bull wheels, two brake mechanisms, two bull wheels rotationally set up body frame both sides, two brake mechanisms rotationally set up body frame both sides.

The displacement link mechanism include bearing bar, electric putter connecting rod, two inner arms, two short arms, two outer arms, two quadrangle mounts, the bearing bar set up fixedly the body frame on, two inner arm rear ends rotationally set up the bearing bar both ends, two inner arms between be provided with fixedly the electric putter connecting rod, two short arms set up fixedly the bearing bar both ends, two outer arm rear ends rotationally set up the short arm front end, outer arm front end rotationally just inner arm front end rotationally be provided with the quadrangle mount, two quadrangle mounts between fixed be provided with the cushion.

The cushion including by the backing plate, by cushion frame, two handrail adjustment tank, mounting bolt, the cushion board set up with fixing by cushion frame on, the left and right sides of cushion frame be provided with two handrail adjustment tank, handrail adjustment tank in the equidistance be provided with the screw hole, handrail mounting groove in be provided with mounting bolt.

The cart handle comprises a handle sleeve, a T-shaped handle, a spring, a resistance sheet, an n-shaped groove and a cylindrical spring chamber, wherein the n-shaped groove is formed in the side surface of the handle sleeve, the cylindrical spring chamber is arranged in the handle sleeve, the resistance sheet is fixedly arranged on one side of the front end of the T-shaped handle, the front end of the T-shaped handle is rotatably arranged in the handle sleeve, the middle of the front end of the T-shaped handle is slidably arranged in the n-shaped groove, and the spring is arranged between the resistance sheet and the inner wall of the cylindrical spring chamber.

Cushion angle adjustment mechanism include two lead screw mounting grooves, two motors, two ball, two lead screw mounting grooves set up fixedly the cushion both sides, the motor set up fixedly the lead screw mounting groove in, ball rotationally set up the motor with lead screw mounting groove inner wall between, ball set up with sliding the ball on ball, handrail front end rotationally set up in the ball upper end.

The fulcrum displacement mechanism comprises two sleeves, two telescopic rods, a seat plate, a worm and gear elevator, a worm, an n-shaped support and two universal wheels, wherein the two sleeves are fixedly arranged below the main frame, the seat plate is fixedly arranged between the two sleeves, the worm and gear elevator is fixedly arranged on the seat plate, the worm is slidably arranged in the worm and gear elevator, the front end of the worm is fixedly arranged in the middle of the upper part of the n-shaped support, the rear ends of the two telescopic rods are slidably arranged in the sleeves, the front ends of the two telescopic rods are fixedly arranged on the n-shaped support, and the two universal wheels are rotatably arranged on two sides below the n-shaped support.

The pedal include footboard, rectangle telescopic link, square sleeve and locking screw, the footboard set up fixedly the rectangle telescopic link on, the rectangle telescopic link on be provided with the positioning screw hole equidistance, square sleeve set up fixedly n shape support on, square sleeve on be provided with locking screw.

Supplementary steady mechanism include removable pole, weight box, supplementary footboard, removable pole detachably set up automobile body rear, the weight box set up fixedly removable pole below, supplementary footboard set up fixedly removable pole below. Compared with the prior art, the invention has the beneficial effects that:

the transfer auxiliary wheelchair is convenient to operate and stable in structure, and can help a person with lower limb dysfunction to meet the transfer requirement from a bed to the wheelchair. The shift connecting rod mechanism enables the transfer auxiliary wheelchair to have stronger adaptability, and the movement track of the mechanism enables the seat to be suitable for bed surfaces with different heights. The user can realize the contact of the seat and the bed surface by means of the displacement connecting rod mechanism, and the transfer from the bed to the wheelchair or from the wheelchair to the bed is automatically completed. The braking device and the fulcrum displacement mechanism can well ensure the safety of the user in the transferring process. The auxiliary stabilizing mechanism can properly adjust the balance weight according to the weight of a user, and the stability in the transfer process is improved. The back cushion angle adjusting mechanism can also be automatically adjusted according to the comfortable requirement of a user. The cart handle can be folded when no power is supplied to a caregiver, and the condition of being hooked by collision is reduced. In addition, the transfer auxiliary wheelchair also has the transfer transportation function of a common wheelchair.

Drawings

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

FIG. 2 is a rear side elevational 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 displacement linkage;

FIG. 5 is a schematic view of a back pad;

FIG. 6 is a schematic view of the angle adjustment mechanism for the back pad;

FIG. 7 is a schematic view of the cart handle;

FIG. 8 is a schematic view of the fulcrum displacement mechanism;

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. 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 vehicle body 1, a displacement link mechanism 2 fixedly provided at an upper side of the vehicle body 1, an electric push rod 3 rotatably provided between the vehicle body 1 and the displacement link mechanism 2, a seat cushion 4 fixedly provided at a front end of the displacement link mechanism 2, the utility model discloses a chair, including cushion 4, fixed back cushion 5, the shallow handle 6 that sets up rotationally the cushion 4 rear end, set up fixedly the cushion angle adjustment mechanism 7 of cushion 4 both sides, the front end rotationally sets up on cushion angle adjustment mechanism 7 and the rear end rotationally sets up handrail 8 at cushion 5 middle part, set up fixedly fulcrum displacement mechanism 9 of automobile body 1 below, set up fixedly pedal 10 in fulcrum displacement mechanism 9 front side, set up fixedly supplementary stationary mechanism 11 in automobile body 1 rear side.

The transfer-assisting wheelchair can help a person with lower limb dysfunction to complete the transfer from a bed to the wheelchair. Specifically, as shown in fig. 3 and 4, the displacement link mechanism 2 includes a bearing rod 21, an electric push rod connecting rod 22, two inner arms 23, two short arms 24, two outer arms 25, two quadrilateral fixing brackets 26, the bearing rod 21 is fixedly arranged on the main frame 12, the rear ends of the two inner arms 23 are rotatably arranged at the two ends of the bearing rod 21, the electric push rod connecting rod 22 is fixedly arranged between the two inner arms 23, the two short arms 24 are fixedly arranged at the two ends of the bearing rod 21, the rear ends of the two outer arms 25 are rotatably arranged at the front ends of the short arms 24, the front ends of the outer arms 25 are rotatably arranged, the front ends of the inner arms 23 are rotatably provided with quadrilateral fixing frames 26, and the seat cushion 4 is fixedly arranged between the two quadrilateral fixing frames 26. When shifting, the nursing staff will shift before the auxiliary wheelchair pushes the user's bed, drive electric putter 3, drive electric putter connecting rod 22 and make inner arm 23 clockwise rotation, then drive quadrangle mount 26 and cushion 4 and stretch out forward, and make cushion 4 rise earlier afterwards to fall with the high parallel and level of bed with the arc orbit, the user removes the health to the cushion, drive electric putter 3, drive electric putter connecting rod 22 and make inner arm 23 anticlockwise rotation, then drive quadrangle mount 26 and cushion 4 and withdraw backwards, and make cushion 4 rise earlier afterwards to suitable height with the arc orbit, accomplish user's transfer.

Further, in order to improve the safety of the transfer-assisted wheelchair during the transfer process and prevent the transfer-assisted wheelchair from moving during the transfer process, the large wheels 13 of the transfer-assisted wheelchair of the present invention can be locked, as shown in fig. 8, the body 1 includes a main frame 12, two large wheels 13, and two brake mechanisms 14, the two large wheels 13 are rotatably disposed on both sides of the main frame 12, and the two brake mechanisms 14 are rotatably disposed on both sides of the main frame 12. After the auxiliary wheelchair approaches the bed, the user can rotate the two brake mechanisms 14 to lock the two large wheels 13, so as to prevent the auxiliary wheelchair from moving on the ground. Meanwhile, in order to prevent the auxiliary wheelchair from turning forward during the transfer process, the universal wheel 97 of the transfer auxiliary wheelchair of the invention can be extended and contracted forwards and backwards, as shown in fig. 8, the fulcrum displacement mechanism 9 comprises two sleeves 91, two telescopic rods 92, a seat plate 93, a worm gear and worm elevator 94, a worm 95, an n-shaped bracket 96 and two universal wheels 97, the two sleeves 91 are fixedly arranged below the main frame 12, the seat plate 93 is fixedly arranged between the two sleeves 91, the worm gear and worm elevator 94 is fixedly arranged on the seat plate 93, the worm 95 is slidably arranged in the worm gear and worm elevator 94, the front end of the worm 95 is fixedly arranged above the n-shaped bracket 96, the rear ends of the two telescopic rods 92 are slidably arranged in the sleeves 91 and the front ends are fixedly arranged on the n-shaped bracket 96, the two universal wheels 97 are rotatably disposed at two sides below the n-shaped bracket 96. The user moves the auxiliary wheelchair to the front of the bed, rotates the two brake mechanisms 14 to lock the two large wheels 13, and then drives the worm gear and worm lifter 94 to enable the worm 95 to extend forwards, drives the n-shaped bracket 96 and the two universal wheels 97 below to move forwards and backwards, changes the axle distance between the universal wheels 97 and the large wheels 13, and prevents the auxiliary wheelchair from turning forwards.

Further, in order to increase the adaptation range of the auxiliary wheelchair and satisfy the requirement of heavier users, the auxiliary stabilizing mechanism 11 of the auxiliary transfer wheelchair of the present invention can provide additional stabilizing torque to the auxiliary wheelchair by adding heavy objects or by means of external force, as shown in fig. 3, the auxiliary stabilizing mechanism 11 includes a detachable rod 111, a weight box 112, and an auxiliary pedal 113, the detachable rod 111 is detachably disposed behind the main frame 12, the weight box 112 is fixedly disposed below the detachable rod 111, and the auxiliary pedal 113 is fixedly disposed below the detachable rod 111. The weight box 112 can be added with weight according to the weight of the user, and the auxiliary pedal 113 can provide an additional force point for nursing staff, so as to ensure the stability of the auxiliary wheelchair during transfer. Meanwhile, in order to meet users with different heights, the pedals 10 of the indoor multifunctional sitting and standing transfer device can be adjusted in height, as shown in fig. 8, each pedal 10 comprises a pedal 101, a rectangular telescopic rod 102, a square sleeve 103 and a locking screw 104, the pedals 101 are fixedly arranged on the rectangular telescopic rods 102, the rectangular telescopic rods 103 are equidistantly provided with positioning threaded holes, the square sleeves 103 are fixedly arranged on the n-shaped support 96, and the square sleeves 103 are provided with the locking screws 104. Firstly, the locking screw 104 is loosened, the rectangular telescopic rod 102 is adjusted to a proper height and is aligned with the positioning threaded hole, then the locking screw 104 is screwed, and the rectangular telescopic rod 102 is tightly fixed on the square sleeve 103, so that the height of the pedal 101 is adjusted.

Further, in order to improve the comfort of the auxiliary wheelchair, the armrest 8 of the transfer auxiliary wheelchair of the present invention may be height-adjusted, as shown in fig. 5, the back cushion 5 includes a back cushion plate 51, a back cushion frame 52, two armrest adjustment grooves 53, and mounting bolts 54, the back cushion plate 51 is fixedly disposed on the back cushion frame 52, the two armrest adjustment grooves 53 are disposed on the left and right sides of the back cushion frame 52, threaded holes are equidistantly disposed in the armrest adjustment grooves 53, and the mounting bolts 54 are disposed in the armrest mounting grooves 53. When the height of the armrest 8 needs to be adjusted, the mounting bolt 54 is removed, the rear end of the armrest 8 is adjusted to the proper height, the mounting bolt 54 is inserted and screwed after being aligned with the threaded hole in the armrest adjusting groove 53, and therefore the height of the armrest 8 is adjusted. Meanwhile, in order to allow a user to have a comfortable sitting posture, the backrest 5 of the transfer assist wheelchair of the present invention may be angularly adjusted, as shown in fig. 6, the backrest angle adjusting mechanism 7 includes two screw mounting grooves 71, two motors 72, two ball screws 73, and two ball sliders 74, the two screw mounting grooves 71 are fixedly disposed at both sides of the seat cushion 4, the motors 72 are fixedly disposed in the screw mounting grooves 71, the ball screws 73 are rotatably disposed between the motors 72 and the inner walls of the screw mounting grooves 71, the ball sliders 74 are slidably disposed on the ball screws 73, and the front ends of the armrests 8 are rotatably disposed at the upper ends of the ball sliders 74. When a user needs to adjust the angle of the backrest cushion, the motor 72 is driven to rotate the ball screw 73, so that the ball slider 74 slides back and forth along the ball screw 73, and the armrest 8 on the ball slider 74 is driven to move back and forth. Thereby achieving angular adjustment of the back cushion 5 relative to the seat cushion 4.

In order to increase the safety of a user in the process of driving by using the auxiliary wheelchair alone and reduce the possibility that the handle of the auxiliary wheelchair is collided or hooked by a passerby, the transfer auxiliary wheelchair cart handle 6 of the invention can be folded, as shown in fig. 7, the cart handle 6 comprises a handle sleeve 61, a T-shaped handle 62, a spring 63, a resistance sheet 64, an n-shaped groove 65 and a cylindrical spring chamber 66, the side surface of the handle sleeve 61 is provided with the n-shaped groove 65, the handle sleeve 61 is internally provided with the cylindrical spring chamber 66, the resistance sheet 64 is fixedly arranged at one side of the front end of the T-shaped handle 62, the T-shaped handle 62 is rotatably arranged in the handle sleeve 61, the middle part of the T-shaped handle is slidably arranged in the n-shaped groove 65, and the spring 63 is arranged between the resistance sheet 64 and the inner wall of the cylindrical spring chamber 66. When a user needs to fold the trolley handle 6, the T-shaped handle 62 is operated to the right to compress the spring 63, then the T-shaped handle 62 is rotated to the other end of the n-shaped groove 65, and then the T-shaped handle is locked at the other end of the n-shaped groove 65 under the action of the elastic force of the spring 63, so that the folding function of the trolley handle 6 is realized.

In conclusion, the transfer auxiliary wheelchair is simple and convenient to operate and has high safety and stability. Aiming at the people with lower limb dysfunction, the transfer auxiliary device can help the people to complete the transfer activity, and the workload of nursing staff is reduced. The shift connecting rod mechanism enables the transfer auxiliary wheelchair to have stronger applicability and be suitable for bed surfaces with different heights; the brake mechanism and the fulcrum displacement mechanism improve the safety of the auxiliary wheelchair for transfer and prevent the auxiliary wheelchair from sliding and turning forwards in the transfer process; the auxiliary stabilizing mechanism and the pedals can be flexibly adjusted to be suitable for users with different weights and elevations; the angle-adjustable back cushion and the height-adjustable armrests increase the comfort of the user; the foldable stroller handle reduces the possibility that the auxiliary wheelchair is mistakenly bumped or hooked when a user goes out alone. Therefore, the multifunctional transfer auxiliary device can enable a user to more conveniently and safely realize various functions such as transfer, posture conversion and the like, help a lower limb dysfunction person to transfer in multiple directions and enable the user to more conveniently perform various activities. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A transfer auxiliary wheelchair is characterized by comprising a wheelchair body, an electric push rod, a displacement link mechanism, a cushion, a back cushion, a cart handle, a back cushion angle adjusting mechanism, a handrail, a fulcrum displacement mechanism, pedals and an auxiliary stabilizing mechanism, wherein the upper end of the wheelchair body is fixedly provided with the displacement link mechanism, the wheelchair body and the displacement link mechanism are rotatably provided with the electric push rod, the front end of the displacement link mechanism is fixedly provided with the cushion, the rear side of the cushion is rotatably provided with the back cushion, the left side and the right side of the back cushion back are fixedly provided with the cart handle, the two sides of the cushion are fixedly provided with the back cushion angle adjusting mechanism, the rear end of the handrail is rotatably arranged in the middle of the back cushion, the front end of the handrail is rotatably arranged on the back cushion angle adjusting mechanism, the fulcrum displacement mechanism is fixedly arranged at the lower end of the wheelchair body, the pedal is fixedly arranged at the front end of the fulcrum displacement mechanism, and the auxiliary stabilizing mechanism is detachably arranged at the rear end of the vehicle body.

2. A transfer assist wheelchair as claimed in claim 1 wherein said body comprises a frame, two large wheels rotatably mounted on opposite sides of said frame, and two brake mechanisms rotatably mounted on opposite sides of said frame.

3. The transfer assist wheelchair as claimed in claim 1, wherein the displacement link mechanism comprises a bearing bar, an electric push rod connecting bar, two inner arms, two short arms, two outer arms, and two quadrilateral holders, the bearing bar is fixedly disposed on the main frame, rear ends of the two inner arms are rotatably disposed at both ends of the bearing bar, the electric push rod connecting bar is fixedly disposed between the two inner arms, the two short arms are fixedly disposed at both ends of the bearing bar, rear ends of the two outer arms are rotatably disposed at front ends of the short arms, front ends of the outer arms are rotatably disposed at front ends of the inner arms, and the quadrilateral holders are fixedly disposed between the two quadrilateral holders.

4. A transfer assist wheelchair as claimed in claim 1, wherein the backrest comprises a backrest plate, a backrest frame, two armrest adjustment slots, and a mounting bolt, the backrest plate is fixedly disposed on the backrest frame, the two armrest adjustment slots are disposed on left and right sides of the backrest frame, threaded holes are equidistantly disposed in the armrest adjustment slots, and the mounting bolt is disposed in the armrest mounting slot.

5. The transfer assist wheelchair as claimed in claim 1, wherein the cart handle comprises a handle sleeve, a T-shaped handle, a spring, a resistance piece, an n-shaped groove, and a cylindrical spring chamber, the handle sleeve has the n-shaped groove on the side, the cylindrical spring chamber is disposed in the handle sleeve, the resistance piece is fixedly disposed on the side of the front end of the T-shaped handle, the front end of the T-shaped handle is rotatably disposed in the handle sleeve and the middle portion of the T-shaped handle is slidably disposed in the n-shaped groove, and the spring is disposed between the resistance piece and the inner wall of the cylindrical spring chamber.

6. A transfer assist wheelchair as claimed in claim 1, wherein said cushion angle adjusting mechanism comprises two lead screw mounting grooves fixedly provided on both sides of said seat cushion, two motors fixedly provided in said lead screw mounting grooves, two ball screws slidably provided on said ball screws, and two ball sliders rotatably provided at upper ends of said ball sliders, said two lead screw mounting grooves being fixedly provided on both sides of said seat cushion, said motors being fixedly provided in said lead screw mounting grooves, said ball screws being rotatably provided between said motors and inner walls of said lead screw mounting grooves, said ball sliders being slidably provided on said ball screws.

7. A transfer assist wheelchair as claimed in claim 1, wherein the pivot displacement mechanism comprises two sleeves fixedly disposed below the main frame, two telescopic links fixedly disposed between the two sleeves, a seat plate, a worm gear elevator fixedly disposed on the seat plate, a worm slidably disposed in the worm gear elevator, an n-shaped frame, and two universal wheels, wherein the front end of the worm is fixedly disposed above and in the middle of the n-shaped frame, the rear ends of the two telescopic links are slidably disposed in the sleeves and the front ends of the two telescopic links are fixedly disposed on the n-shaped frame, and the two universal wheels are rotatably disposed on both sides below the n-shaped frame.

8. The transfer assist wheelchair as claimed in claim 1, wherein the pedals comprise pedals, rectangular extension bars, square sleeves and locking screws, the pedals are fixedly arranged on the rectangular extension bars, the rectangular extension bars are equidistantly provided with positioning threaded holes, the square sleeves are fixedly arranged on the n-shaped brackets, and the square sleeves are provided with the locking screws.

9. A transfer assist wheelchair as claimed in claim 1 wherein said assist leveling mechanism comprises a removable bar, a weight box and an assist pedal, said removable bar being removably disposed behind said body, said weight box being fixedly disposed below said removable bar, said assist pedal being fixedly disposed below said removable bar.

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