Adjustable wheelchair foot support mechanism

Abstract

The utility model relates to the technical field of wheelchairs, in particular to an adjustable wheelchair foot support mechanism, and aims to solve the technical problems that an existing wheelchair foot support mechanism often does not have the capability of performing large-angle adjustment according to the use requirements of a patient, so that the comfort of the patient is reduced. According to the technical scheme, the adjustable wheelchair foot support mechanism comprises a foot support, a leg frame, a sliding assembly, a rotating assembly and a moving assembly; the rotating assembly capable of greatly adjusting the angle of the foot support mechanism of the wheelchair is additionally arranged on the wheelchair, so that the angle of the foot support can be changed more flexibly, the comfort degree of a patient using the wheelchair is improved, the foot support is detachable, the distance between the foot support and the leg frame can be changed according to the height of the patient, and the wheelchair is convenient to use. Meanwhile, the foot support can be folded and stored through the sliding assembly, space is saved, and the problem that an existing wheelchair foot support mechanism often does not have the capacity of large-angle adjustment according to the use requirement of the patient, and consequently the comfort of the patient is lowered is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheelchairs, and particularly relates to an adjustable wheelchair footrest mechanism. Background Art

[0002] The injured, disabled and some patients will lose their ability to move, and often need help from their family members when they go to the hospital for treatment and go out. In order to facilitate family members to move and take care of the patients, chairs with wheels that can help replace walking are often used to meet the transportation needs of the physically disabled and those with mobility difficulties.

[0003] At present, the footrest mechanism of existing wheelchairs often only has the ability to slightly change the angle. The footrest cannot be adjusted according to the body shape of different people, has poor versatility, and will reduce the comfort of the user. At the same time, the footrest mechanism can only provide support for the soles of the patient's feet, and the patient's legs lack support. During movement, the patient's legs are easily separated from the footrest.

[0004] Therefore, in order to address the problem that most of the existing wheelchair footrest mechanisms are fixed or only have the ability to change angles slightly and cannot be adjusted according to the patient's body shape and sitting posture requirements, the existing wheelchair footrest mechanism is improved by adding a rotating component to it so that it can greatly adjust the angle of the footrest mechanism. Utility Model Content

[0005] In order to overcome the problem that the existing wheelchair footrest mechanism often does not have the ability to adjust the angle to a large extent according to the patient's needs, resulting in reduced patient comfort.

[0006] The technical solution of the utility model is: an adjustable wheelchair footrest mechanism, comprising a footrest, a leg frame, a sliding assembly, a rotating assembly, and a moving assembly; two left and right opposite footrests are provided on the front side of the wheelchair, a U-shaped leg frame is provided on the footrest, a sliding assembly for adjusting the distance between the legrest and the wheelchair is provided at the bottom end of the wheelchair, a rotating assembly for adjusting the angle of the footrest is installed on the sliding assembly, and a moving assembly for adjusting the distance between the two footrests is installed on the leg frame.

[0007] Preferably, by adding a rotating component to the existing wheelchair that can significantly change the angle of the footrest mechanism, it can be adjusted to the patient's desired posture. The legrest can support the back of the patient's legs to prevent the patient from falling off the wheelchair due to excessive adjustment of the footrest mechanism. The movable component can change the distance between the footrests, thereby improving the versatility of the wheelchair.

[0008] Preferably, a connecting rod is fixedly connected to the footrest, and anchor holes are provided on the connecting rod and the leg frame. Anchor pieces are inserted into the anchor holes. The footrest and the connecting rod are fixed to the leg frame through the anchor pieces. The position of the connecting rod on the leg frame can be adjusted according to the height. The anchor pieces can be pins or bolts.

[0009] Preferably, the sliding assembly includes a slide groove and a slider; two T-shaped slide grooves opposite to each other are opened at the bottom of the wheelchair, and the slide grooves are slidably connected to the slider located on the opposite side of the leg frame. The slider slides in the slide groove to drive the footrest and the leg frame to move forward and backward at the bottom of the wheelchair.

[0010] Preferably, the rotating assembly includes a rotating rod and a rotating shaft; a rotating rod is provided on the opposite side of the slider, and the rotating rod is fixedly connected to a rotating shaft movably connected to the slider. The footrest and legrest can be rotated by rotating the rotating shaft and the rotating rod connected to the rotating shaft.

[0011] Preferably, the rotating assembly also includes a motor; the motor is installed on the right side of the slider, and the transmission element of the motor is connected to the rotating shaft. After the motor is started, it drives the rotating shaft and the rotating rod to rotate to adjust the patient's lower limb posture.

[0012] Preferably, the moving assembly includes a threaded rod and a limit column; a threaded rod with an external bidirectional threaded structure is inserted between the rotating rods, and the limit column is fixedly connected between the rotating rods. The leg frame is sleeved on the outside of the threaded rod and the limit column. After the threaded rod rotates, under the restriction of the limit column, the leg frame cannot follow the threaded rod to rotate but moves left and right on the threaded rod. Since the threaded rod is a bidirectional threaded rod, the leg frames sleeved in different threaded structure areas will move in opposite directions.

[0013] Preferably, the moving component also includes a knob; a knob is provided on the outside of the rotating rod, and the knob is connected to the threaded rod. By turning the knob to drive the threaded rod to rotate, the distance between the two leg frames can be adjusted according to the patient's body shape and sitting posture, thereby improving the versatility of the wheelchair.

[0014] Beneficial effects of the utility model:

[0015] 1. By adding a rotating component to the wheelchair that can greatly adjust the angle of the wheelchair footrest mechanism, the angle of the footrest can be changed more flexibly, improving the patient's comfort when using the wheelchair. The footrest is set to be detachable, and the distance between the footrest and the legrest can be changed according to the patient's height, increasing the versatility of the wheelchair. At the same time, the footrest can be folded and stored using the sliding component to save space.

[0016] 2. When the footrest is rotated to a horizontal state by the motor, the leg frame can support and fix the patient's legs to prevent the patient from falling off the wheelchair due to leg weakness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the first three-dimensional structure of the adjustable wheelchair footrest mechanism of the present invention;

[0018] Figure 2Shown is a schematic diagram of the second three-dimensional structure of the adjustable wheelchair footrest mechanism of the present invention;

[0019] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the footrest and legrest of the adjustable wheelchair footrest mechanism of the present invention;

[0020] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the slideway of the adjustable wheelchair footrest mechanism of the present invention;

[0021] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the rotating assembly of the adjustable wheelchair footrest mechanism of the present invention;

[0022] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the movable component of the adjustable wheelchair footrest mechanism of the present invention.

[0023] Explanation of the accompanying reference numerals: 1. footrest; 2. legrest; 3. connecting rod; 4. anchor; 501. slide groove; 502. slider; 601. rotating rod; 602. rotating shaft; 603. motor; 701. threaded rod; 702. limiting column; 703. knob. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figure 1-2 The utility model provides an embodiment: an adjustable wheelchair footrest mechanism includes a footrest 1, a leg frame 2, a sliding assembly, a rotating assembly, and a moving assembly; two left and right opposite footrests 1 are provided on the front side of the wheelchair, and a U-shaped leg frame 2 is provided on the footrest 1. A sliding assembly for adjusting the distance between the legrest and the wheelchair is provided at the bottom end of the wheelchair, a rotating assembly for adjusting the angle of the footrest 1 is installed on the sliding assembly, and a moving assembly for adjusting the distance between the two footrests 1 is installed on the leg frame 2. By adding a rotating assembly that can greatly change the angle of the footrest mechanism to the existing wheelchair, it can be adjusted to the posture desired by the patient, and the leg frame 2 can support the back of the patient's legs to prevent the patient from falling off the wheelchair due to excessive adjustment of the footrest mechanism. The moving assembly can change the distance between the footrests 1, thereby improving the versatility of the wheelchair.

[0026] See also Figure 3-4In this embodiment, a connecting rod 3 is fixedly connected to the footrest 1, and anchor holes are provided on the connecting rod 3 and the leg frame 2, and an anchor 4 is inserted into the anchor hole. The sliding assembly includes a slide groove 501 and a slider 502; two T-shaped slide grooves 501 opposite to each other are provided at the bottom of the wheelchair, and a slider 502 located on the opposite side of the leg frame 2 is slidably connected in the slide groove 501. The footrest 1 and the connecting rod 3 are fixed to the leg frame 2 through the anchor 4. The position of the connecting rod 3 on the leg frame 2 can be adjusted according to the height. The anchor 4 can be a pin or a bolt, and the slider 502 slides in the slide groove 501 to drive the footrest 1 and the leg frame 2 to move forward and backward at the bottom of the wheelchair.

[0027] See also Figure 5-6 In this embodiment, the rotating assembly includes a rotating rod 601 and a rotating shaft 602; a rotating rod 601 is provided on the opposite side of the slider 502, and the rotating rod 601 is fixedly connected to the rotating shaft 602 movably connected to the slider 502, and the rotating assembly also includes a motor 603; a motor 603 is installed on the right side of the slider 502, and the transmission element of the motor 603 is connected to the rotating shaft 602, and the moving assembly includes a threaded rod 701 and a limiting column 702; a threaded rod 701 with an external bidirectional threaded structure is inserted between the rotating rods 601, and the limiting column 702 is fixedly connected between the rotating rods 601, and the leg frame 2 is sleeved on the outside of the threaded rod 701 and the limiting column 702, and the moving assembly also includes a knob 703; a knob 703 is provided on the outside of the rotating rod 601 The knob 703 is connected to the threaded rod 701. By rotating the shaft 602 and the rotating rod 601 connected to the shaft 602, the footrest 1 and the leg frame 2 are rotated. After the motor 603 is started, the shaft 602 and the rotating rod 601 are driven to rotate to adjust the patient's lower limb posture. After the threaded rod 701 rotates, under the restriction of the limit column 702, the leg frame 2 cannot rotate with the threaded rod 701 but moves left and right on the threaded rod 701. Since the threaded rod 701 is a bidirectional threaded rod 701, the leg frames 2 connected to different threaded structure areas will move in opposite directions. By turning the knob 703 to drive the threaded rod 701 to rotate, the distance between the two leg frames 2 can be adjusted according to the patient's body shape and sitting posture, thereby improving the versatility of the wheelchair.

[0028] During operation, the user first pulls the slider 502 outward, and the slider 502 slides forward in the slide groove 501, driving the footrest 1 and the leg frame 2 to move forward together. Then, the anchor 4 is removed, and the footrest 1 is placed aside. The patient is helped to move to the wheelchair. The knob 703 is rotated according to the patient's sitting posture. The knob 703 drives the threaded rod 701 to rotate. Under the restriction of the limit column 702, the leg supports located in different threaded areas on the threaded rod 701 move in opposite directions, so that the leg frame 2 is closely attached to the back of the patient's legs.

[0029] The footrest 1 is installed according to the patient's leg length. When the footrest 1 is tightly attached to the patient's sole, the anchor 4 is inserted into the anchor holes provided on the footrest 1 and the leg frame 2 and fixed with a nut. After the fixing is completed, the motor 603 is started, and the motor 603 drives the rotating rod 601 and the footrest 1 and leg frame 2 installed between the rotating rod 601 to rotate, thereby adjusting the patient's leg posture and improving the patient's comfort.

[0030] After the patient has finished using the wheelchair and has gotten off, the motor 603 can be started to drive the shaft 602 to rotate in the opposite direction, and then the slider 502 can be pushed inward to store the footrest 1 and legrest 2 at the bottom of the wheelchair, thereby reducing the space occupied by the wheelchair.

[0031] Through the above steps, a rotating component that can greatly adjust the angle of the wheelchair footrest mechanism is installed on the wheelchair, so that the angle of the footrest 1 can be changed more flexibly, thereby improving the comfort of the patient using the wheelchair. The footrest 1 is set to be detachable, and the distance between the footrest 1 and the leg frame 2 can be changed according to the patient's height, thereby increasing the versatility of the wheelchair. At the same time, the footrest 1 can be folded and stored using the sliding component to save space. The existing wheelchair footrest mechanism often does not have the ability to make large angle adjustments according to the patient's usage needs, resulting in a decrease in patient comfort.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. An adjustable wheelchair footrest mechanism, comprising a footrest (1) and a legrest (2); characterized in that: The wheelchair further comprises a sliding assembly, a rotating assembly, and a moving assembly; two left and right opposite footrests (1) are provided on the front side of the wheelchair, a U-shaped leg frame (2) is provided on the footrest (1), a sliding assembly for adjusting the distance between the leg frame (2) and the wheelchair is provided at the bottom end of the wheelchair, a rotating assembly for adjusting the angle of the footrest (1) is installed on the sliding assembly, and a moving assembly for adjusting the distance between the two footrests (1) is installed on the leg frame (2).

2. The adjustable wheelchair foot support mechanism according to claim 1, characterized in that: A connecting rod (3) is fixedly connected to the footrest (1); anchor holes are provided on the connecting rod (3) and the leg frame (2); and anchor pieces (4) are inserted into the anchor holes.

3. The adjustable wheelchair foot support mechanism according to claim 1, characterized in that: The sliding assembly comprises a slide groove (501) and a slider (502); two T-shaped slide grooves (501) opposite to each other are provided at the bottom of the wheelchair, and a slider (502) located on the opposite side of the leg frame (2) is slidably connected in the slide groove (501).

4. The adjustable wheelchair foot support mechanism according to claim 3, characterized in that: The rotating assembly includes a rotating rod (601) and a rotating shaft (602); the rotating rod (601) is provided on one side opposite to the slider (502), and the rotating rod (601) is fixedly connected to the rotating shaft (602) which is movably connected to the slider (502).

5. The adjustable wheelchair foot support mechanism according to claim 4, characterized in that: The rotating assembly further includes a motor (603); the motor (603) is installed on the right side of the slider (502), and the transmission element of the motor (603) is connected to the rotating shaft (602).

6. The adjustable wheelchair foot support mechanism according to claim 4, characterized in that The movable assembly comprises a threaded rod (701) and a limiting column (702); a threaded rod (701) with an external bidirectional threaded structure is inserted between the rotating rods (601), the limiting column (702) is fixedly connected between the rotating rods (601), and the leg frame (2) is sleeved on the outside of the threaded rod (701) and the limiting column (702).

7. The adjustable wheelchair foot support mechanism according to claim 6, characterized in that: The moving assembly further comprises a knob (703); the knob (703) is arranged on the outside of the rotating rod (601), and the knob (703) is connected to the threaded rod (701).

Images