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

A transfer assist wheelchair

technical field

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

Background technique

At present, the number of people with disabilities is growing rapidly, and it is difficult for people with lower extremity dysfunction to complete the transfer from bed to wheelchair, and it is easy to be limited. Most of the escorts use the method of lifting and holding to assist the transfer, which is not only time-consuming and labor-intensive, but also has potential safety hazards. In addition, in the context of caring for the disabled, improving the independent living ability of the disabled is an important way to protect the physical and mental health of the disabled.

At this stage, most of the wheelchairs on the market are relatively simple in function, and their adjustability is not strong, and they cannot meet the needs of transferring from bed to chair. Therefore, it is important to develop a transfer assist wheelchair with controllable adjustment and easy operation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an auxiliary transfer wheelchair for the technical defects existing in the prior art.

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

A transfer auxiliary wheelchair is characterized in that it includes a body, an electric push rod, a displacement link mechanism, a seat cushion, a back cushion, a cart handle, a cushion angle adjustment mechanism, a handrail, a fulcrum displacement mechanism, a footrest, and an auxiliary stabilization mechanism. The upper end of the vehicle body is fixedly provided with a displacement link mechanism, an electric push rod is rotatably arranged between the vehicle body and the displacement link mechanism, and the front end of the displacement link mechanism is fixedly provided with a cushion, so The back side of the seat cushion is rotatably provided with a back cushion, the left and right sides of the back of the back cushion are fixedly provided with cart handles, the two sides of the seat cushion are fixedly provided with the cushion angle adjustment mechanism, the armrest The rear end is rotatably arranged in the middle of the cushion and the front end is rotatably arranged on the angle adjustment mechanism of the cushion, the fulcrum displacement mechanism is fixedly arranged at the lower end of the vehicle body, and the footrest is fixed is arranged at the front end of the fulcrum displacement mechanism, and the auxiliary stabilization mechanism is detachably arranged at the rear end of the vehicle body.

The body includes a main frame, two large wheels, and two braking mechanisms, the two large wheels are rotatably arranged on both sides of the main frame, and the two braking mechanisms are rotatably arranged on the sides of the main frame. on both sides of the main frame.

The displacement link mechanism includes a load-bearing rod, an electric push rod connecting rod, two inner arms, two short arms, two outer arms, and two quadrilateral fixed frames, and the load-bearing rod is fixedly arranged on the On the main frame, the rear ends of the two inner arms are rotatably arranged at both ends of the load-bearing rod, and the electric push rod connecting rod is fixedly arranged between the two inner arms. The two short arms are fixedly arranged at both ends of the load-bearing rod, the rear ends of the two outer arms are rotatably arranged at the front ends of the short arms, and the front ends of the outer arms are rotatable and the The front end of the inner arm is rotatably provided with a quadrilateral fixing frame, and the seat cushion is fixedly arranged between the two quadrilateral fixing frames.

The cushion includes a cushion plate, a cushion frame, two armrest adjustment grooves, and mounting bolts, the cushion plate is fixedly arranged on the cushion frame, and the left and right sides of the cushion frame are provided with the Two handrail adjustment grooves are provided with threaded holes at equal distances in the handrail adjustment grooves, and mounting bolts are arranged in the handrail installation grooves.

The cart handle includes a handle sleeve, a T-shaped handle, a spring, a blocking piece, an n-shaped groove, and a cylindrical spring chamber, the side of the handle sleeve is provided with an n-shaped groove, and the inside of the handle sleeve is provided There is a cylindrical spring chamber, the blocking piece 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 and the middle part is slidably arranged In the n-shaped groove, the spring is arranged between the blocking piece and the inner wall of the cylindrical spring.

The cushion angle adjustment mechanism includes two screw mounting slots, two motors, two ball screws, and two ball sliders, and the two screw mounting slots are fixedly arranged on both sides of the seat cushion. , the motor is fixedly arranged in the screw installation slot, the ball screw is rotatably arranged between the motor and the inner wall of the screw installation slot, and the ball slides The block is slidably arranged on the ball screw, and the front end of the armrest is rotatably arranged on the upper end of the ball slider.

The fulcrum displacement mechanism includes two sleeves, two telescopic rods, a seat plate, a worm gear lifter, a worm, an n-shaped bracket, and two universal wheels, and the two sleeves are fixedly arranged on the Below the main frame, the seat plate is fixedly arranged between the two sleeves, the turbine worm elevator is fixedly arranged on the seat plate, and the worm is slidably arranged on the seat plate. In the turbine worm elevator, the front end of the worm is fixedly arranged in the middle above the n-shaped bracket, the rear ends of the two telescopic rods are slidably arranged in the sleeve and the front ends are fixedly arranged on the n On the n-shaped bracket, the two universal wheels are rotatably arranged on both sides below the n-shaped bracket.

The foot pedal includes a pedal, a rectangular telescopic rod, a square sleeve and a locking screw, the pedal is fixedly arranged on the rectangular telescopic rod, and the rectangular telescopic rod is equidistantly provided with positioning threads The square sleeve is fixedly arranged on the n-shaped bracket, and the square sleeve is provided with a locking screw.

The auxiliary stabilization mechanism includes a detachable rod, a counterweight box, and an auxiliary pedal, the detachable rod is detachably arranged behind the vehicle body, and the counterweight box is fixedly arranged below the detachable rod , the auxiliary pedal is fixedly arranged below the detachable rod. Compared with the prior art, the beneficial effects of the present invention are:

The transfer assistant wheelchair of the invention has convenient operation and stable structure, and can help the person with lower limb function impairment to complete the transfer requirement from the bed to the wheelchair. The displacement link mechanism makes the transfer assist wheelchair have strong adaptability, and the movement trajectory of the mechanism can make the seat suitable for bed surfaces of different heights. The user can realize the contact between the seat and the bed surface by means of the displacement link mechanism, and complete the transfer from the bed to the wheelchair or from the wheelchair to the bed by himself. The braking device and the fulcrum displacement mechanism can ensure the safety of the user during the transfer process. The auxiliary stabilization mechanism can adjust the weight according to the user's weight to increase the stability of the transfer process. The cushion angle adjustment mechanism can also be adjusted according to the user's comfort needs. The handle of the cart can be stowed away without the assistance of a caregiver to reduce the situation of being hooked by a collision. In addition, the transfer assist wheelchair also has the transfer and transportation function of a common wheelchair.

Description of drawings

Figure 1 shows a front side view of the transfer assist wheelchair of the present invention;

Figure 2 shows a rear side view of the transfer assist wheelchair of the present invention;

Figure 3 shows a schematic diagram of the transfer state of the transfer assist wheelchair;

Figure 4 shows a schematic diagram of the displacement linkage mechanism;

Figure 5 shows a schematic diagram of the back cushion;

Figure 6 shows a schematic diagram of a cushion angle adjustment mechanism;

Figure 7 shows a schematic diagram of the cart handle;

Figure 8 shows a schematic diagram of the fulcrum displacement mechanism;

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

As shown in FIGS. 1 , 2 and 3 , the transfer assist wheelchair of the present invention includes a body 1 , a displacement link mechanism 2 fixedly arranged on the upper side of the body 1 and rotatably arranged between the body 1 and all The electric push rod 3 between the displacement link mechanisms 2 is fixedly arranged on the seat cushion 4 at the front end of the displacement link mechanism 2, and the back cushion 5 is rotatably arranged at the rear end of the seat cushion 4, and is fixedly arranged on the seat cushion 4. The cart handle 6 above the rear side of the back cushion 5 is fixedly arranged on the back cushion angle adjusting mechanism 7 on both sides of the seat cushion 4, the front end is rotatably arranged on the back cushion angle adjusting mechanism 7 and the rear end is rotatably arranged on the back cushion angle adjusting mechanism 7. The armrest 8 in the middle of the back cushion 5 is fixedly arranged on the fulcrum displacement mechanism 9 below the vehicle body 1 , and the footrest 10 fixedly arranged on the front side of the fulcrum displacement mechanism 9 is fixedly arranged behind the vehicle body 1 . Auxiliary smoothing mechanism 11 on the side.

The transfer assist wheelchair of the present invention can help a person with lower limb function to complete the transfer from a bed to a wheelchair. Specifically, as shown in FIGS. 3 and 4 , the displacement linkage mechanism 2 includes a load-bearing rod 21 , an electric push rod connecting rod 22 , two inner arms 23 , two short arms 24 , and two outer arms 25 2. Two quadrilateral fixed frames 26, the load-bearing rod 21 is fixedly arranged on the main frame 12, the rear ends of the two inner arms 23 are rotatably arranged at both ends of the load-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 both ends of the load-bearing rod 21, the two The rear end of the outer arm 25 is rotatably arranged at the front end of the short arm 24, the front end of the outer arm 25 is rotatable and the front end of the inner arm 23 is rotatably provided with a quadrilateral fixing frame 26, and the two The seat cushion 4 is fixedly arranged between the quadrilateral fixing frames 26 . During the transfer, the nursing staff pushes the transfer assist wheelchair to the front of the user's bed, drives the electric push rod 3, drives the electric push rod connecting rod 22 to rotate the inner arm 23 clockwise, and then drives the quadrilateral fixing frame 26 and the seat cushion 4 to extend forward. The user moves his body to the seat cushion, drives the electric push rod 3, and drives the electric push rod connecting rod 22 to rotate the inner arm 23 counterclockwise. Then, the quadrilateral fixing frame 26 and the seat cushion 4 are driven to retract backward, and the seat cushion 4 is first raised and then lowered to a suitable height in an arc-shaped trajectory, so as to complete the transfer of the user.

Further, in order to improve the safety of the transfer assist wheelchair during the transfer process and prevent the assist wheelchair from moving during the transfer process, the large wheel 13 of the transfer assist wheelchair of the present invention can be locked. As shown in FIG. 8 , the body 1 includes: The main frame 12, two large wheels 13, and two braking mechanisms 14, the two large wheels 13 are rotatably arranged on both sides of the main frame 12, and the two braking mechanisms 14 are rotatably arranged on both sides of the main frame 12. After the auxiliary wheelchair approaches the bed, the user can turn the two brake mechanisms 14 to lock the two large wheels 13 to prevent the auxiliary wheelchair from moving on the ground. At the same time, 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 present invention can be telescopic forward and backward. As shown in FIG. 8 , the fulcrum displacement mechanism 9 includes two sleeves 91, two telescopic Rod 92, seat plate 93, worm gear lifter 94, worm 95, n-shaped bracket 96, two universal wheels 97, the two sleeves 91 are fixedly arranged under the main frame 12, the The seat plate 93 is fixedly arranged between the two sleeves 91 , the turbine worm elevator 94 is fixedly arranged on the seat plate 93 , and the worm 95 is slidably arranged on the turbine worm In the elevator 94, the front end of the worm 95 is fixedly arranged in the middle above the n-shaped bracket 96, the rear ends of the two telescopic rods 92 are slidably arranged in the sleeve 91, and the front ends are fixedly arranged in the middle. On the n-shaped bracket 96 , the two universal wheels 97 are rotatably arranged on both sides below the n-shaped bracket 96 . The user moves the auxiliary wheelchair to the front of the bed, and after turning the two brake mechanisms 14 to lock the two large wheels 13, the worm gear lifter 94 can be driven to make the worm 95 extend forward, which drives the n-shaped bracket 96 and the two lower gears. Move the wheel 97 back and forth to change the wheelbase between the universal wheel 97 and the large wheel 13 to prevent the auxiliary wheelchair from tipping forward.

Further, in order to improve the adaptation range of the auxiliary wheelchair and satisfy the users with heavier weight, the auxiliary stabilization mechanism 11 of the auxiliary transfer wheelchair of the present invention can provide additional stabilizing moment for the auxiliary wheelchair by adding heavy objects or using external force, as shown in FIG. 3 . As shown, the auxiliary stabilization mechanism 11 includes a detachable rod 111, a counterweight box 112, and an auxiliary pedal 113. The detachable rod 111 is detachably arranged behind the main frame 12, and the counterweight box 112 The auxiliary pedal 113 is fixedly arranged under the detachable rod 111 , and the auxiliary pedal 113 is fixedly arranged under the detachable rod 111 . The weight box 112 can appropriately add weights according to the user's weight, and the auxiliary pedals 113 can provide an additional force point for the nursing staff to ensure the stability of the auxiliary wheelchair during transfer. At the same time, in order to satisfy users of different heights, the footrest 10 of the indoor multifunctional sitting-to-stand transfer device of the present invention can be adjusted in height. As shown in FIG. 8 , the footrest 10 includes a pedal 101, a rectangular telescopic rod 102, A square sleeve 103 and a locking screw 104, the pedal 101 is fixedly arranged on the rectangular telescopic rod 102, the rectangular telescopic rod 103 is provided with positioning threaded holes at equal distances, and the square sleeve The barrel 103 is fixedly arranged on the n-shaped bracket 96 , and the square sleeve 103 is provided with a locking screw 104 . First, loosen the locking screw 104, adjust the rectangular telescopic rod 102 to a suitable height and align with the positioning threaded hole, then tighten the locking screw 104, the rectangular telescopic rod 102 is tightly fixed on the square sleeve 103, and the height of the pedal 101 is realized. adjustment.

Further, in order to improve the comfort of the auxiliary wheelchair, the armrest 8 of the transfer auxiliary wheelchair of the present invention can be adjusted in height. As shown in FIG. 5 , the cushion 5 includes a cushion plate 51 , a cushion frame 52 , and two armrest adjustment grooves. 53. Mounting bolts 54, the cushion plate 51 is fixedly arranged on the cushion frame 52, the left and right sides of the cushion frame 52 are provided with the two armrest adjusting grooves 53, the armrest The adjusting grooves 53 are provided with threaded holes at equal distances, and the armrest mounting grooves 53 are provided with mounting bolts 54 . When adjustment is required, first remove the mounting bolts 54, adjust the rear end of the handrail 8 to a suitable height, align with the threaded holes in the handrail adjustment groove 53, and then insert and tighten the mounting bolts 54, so as to adjust the height of the handrail 8. At the same time, in order to allow the user to have a comfortable sitting posture, the cushion 5 of the transfer assist wheelchair of the present invention can be adjusted in angle. As shown in FIG. 6 , the cushion angle adjustment mechanism 7 includes two screw mounting grooves 71, two Two motors 72, two ball screws 73, and two ball sliders 74, the two screw mounting slots 71 are fixedly arranged on both sides of the seat cushion 4, and the motors 72 are fixedly arranged on the In the screw mounting slot 71, the ball screw 73 is rotatably arranged between the motor 72 and the inner wall of the screw mounting slot 71, and the ball slider 74 is slidably arranged On the ball screw 73 , the front end of the handrail 8 is rotatably disposed on the upper end of the ball slider 74 . When the user needs to adjust the angle of the cushion, the motor 72 is driven to drive the ball screw 73 to rotate, so that the ball slider 74 slides back and forth along the ball screw 73 and drives the armrest 8 on the ball slider 74 to move forward and backward. Thus, the angle adjustment of the back cushion 5 relative to the seat cushion 4 is realized.

In order to increase the safety of the user in the process of using the auxiliary wheelchair to drive alone, and reduce the possibility of the auxiliary wheelchair cart handle being accidentally hit or hooked by passers-by, the transfer assist wheelchair cart handle 6 of the present invention can be folded, as shown in FIG. 7 . As shown, the cart handle 6 includes a handle sleeve 61, a T-shaped handle 62, a spring 63, a blocking piece 64, an n-shaped groove 65, and a cylindrical spring chamber 66. The side of the handle sleeve 61 is provided with n The handle sleeve 61 is provided with a cylindrical spring chamber 66, the blocking piece 64 is fixedly arranged on the front end side of the T-shaped handle 62, and the T-shaped handle 62 can be rotated The spring 63 is arranged between the blocking piece 64 and the inner wall of the cylindrical spring chamber 66 . When the user needs to fold the cart handle 6, operate the T-shaped handle 62 to compress the spring 63 to the right, then turn the T-shaped handle 62 to the other end of the n-shaped groove 65, and then compress the T-shaped handle under the elastic force of the spring 63 It is locked at the other end of the n-shaped slot 65, so as to realize the folding function of the cart handle 6.

To sum up, the transfer assist wheelchair of the present invention is easy to operate, and has high safety and stability. For people with lower extremity dysfunction, the transfer assistance device of the present invention can help them to complete the transfer activities and reduce the workload of nursing staff. The displacement link mechanism makes the transfer assist wheelchair have strong applicability and can be applied to bed surfaces of different heights; the brake mechanism and the fulcrum displacement mechanism improve the safety of the transfer assist wheelchair and prevent the assist wheelchair from sliding and forwarding during the transfer process. Turn over; Auxiliary stabilization mechanism and footrest can be flexibly adjusted to suit users of different weights and heights; Angled cushions and height-adjustable armrests increase user comfort; foldable cart handle reduces The possibility of the assist wheelchair being accidentally bumped or hooked when the user travels alone. Therefore, the multifunctional transfer assisting device of the present invention can make the user more convenient and safe to realize various functions such as transfer and posture conversion, help the lower limb dysfunction to perform multi-directional transfer, and allow the user to perform various activities more conveniently. . The above are only the preferred embodiments of the present invention. It should be noted that, for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and Retouching 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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