A novel walking assistive wheelchair and working method thereof

Abstract

The present invention relates to a novel walking-assistive wheelchair and a working method thereof, comprising two parallelly arranged bases, wherein the front ends of the two bases are each provided with a liftable lifting platform, the lift platform is in an inverted L-shape, and the top end thereof extends horizontally backwards, the rear ends of the two lift platforms are both rotatably connected with backrest plates, the two backrest plates are in contact and locked when they are turned inwards to the same vertical plane, and are arranged in a square shape in cooperation with a connecting rod erected between the front ends of the two lift platforms, the lower surfaces of the lift platforms near the rear ends are each provided with a connecting plate, the connecting plates are each hinged with a cushion rod, the lower ends of the cushion rods are each vertically connected to a cushion, the inner ends of the two cushions are in contact when they are turned to the same horizontal plane, the bases are connected as a whole via a fixing box, and the bottom ends of the bases are each provided with universal casters. The novel walking-assistive wheelchair has a simple structure and is convenient and labor-saving to operate.

Description

Technical Field

[0001] The invention relates to a novel walking assisting wheelchair and a working method thereof. Background Art

[0002] Usually, elderly people with immobility and patients in the rehabilitation or recovery stage such as those with lower limb injuries need to use assistive wheelchairs for their daily life and daily living. However, the existing assistive wheelchairs have single functions and cannot be used for the user's complete daily life, that is, they cannot complete daily behaviors such as moving and going to the toilet by themselves. Summary of the invention

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a new type of walking assist wheelchair and a working method thereof, which is not only reasonable in structure but also convenient in operation.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a new type of walking-assistive wheelchair, comprising two parallelly arranged bases, each of which is provided with a liftable lifting platform on the top of the front end of the two bases, the lift platform is in an inverted L-shape, and its top end extends horizontally backward, and the rear ends of the two lift platforms are rotatably connected to backrest plates, and the two backrest plates are contacted and locked when they are rotated inward to the same vertical plane, and are arranged in a square shape in conjunction with the connecting rods erected between the front ends of the two lift platforms, and the lower surface of the lift platform near the rear end is provided with a connecting plate, and a seat cushion rod is hinged on the connecting plate, and the lower ends of the seat cushion rods are vertically connected to the seat cushions, and the inner ends of the two seat cushions are contacted when they are rotated to the same horizontal plane, and the bases are connected as a whole via a fixed box, and universal casters are installed at the bottom ends of the bases.

[0005] Furthermore, a threaded rod is screwed in the vertical section of the lifting rod, and the lower end of the threaded rod is driven to rotate by a motor to realize the lifting of the lifting platform. The motor is installed in a fixed box, and a driving power supply connected to the motor is also provided in the fixed box.

[0006] Furthermore, handrails are extended upward at the front ends of the tops of the two lifting adjustments.

[0007] Furthermore, the rotation of the backrest plate and the seat cushion is provided with torque by a torque motor.

[0008] Furthermore, a positioning plate is extended from the rear end of the lifting platform and is hinged with the backrest plate. Electric locks are provided between the positioning plate and the backrest plate, and between the connecting plate and the seat cushion rod. That is, when the two backrest plates are rotated inward to the same vertical plane and when the two seat cushions are rotated to the same horizontal plane, they are locked to provide support.

[0009] Furthermore, a mounting groove with an inverted "convex" shaped cross-section is opened forward at the rear end of the lifting platform, and the lower end of the mounting groove passes through the lifting platform. The connecting plate includes a front connecting plate and a rear connecting plate that clamp the cushion rod in the middle, and is passed through a rotating shaft extending forward and backward. The top ends of the two connecting plates are in an inverted convex shape that cooperates with the mounting groove. The front connecting plate is top-connected to the bottom end of the mounting groove, and the rear end of the front connecting plate is limited by the top connection of the positioning plate. The front end of the positioning plate is inserted into the mounting groove and limited by the limit rods that pass through the left and right sides.

[0010] Furthermore, the upper surface of the seat cushion is provided with an arc-shaped groove facing downward, and the groove runs through the seat cushion from front to back.

[0011] Furthermore, a pedal extending obliquely is fixedly connected to the top of the fixed box, and a top surface of the pedal extends obliquely downward from the front to the rear.

[0012] A novel working method of a walking assistive wheelchair is carried out in the following steps: first, the motor is controlled to rotate, thereby raising and lowering the lifting platform to a suitable position so that the seat cushion is at the same height as the bed; then, the backrest plate is rotated outwardly and unfolded by a torque motor, and the user can move and sit on the seat cushion. At this time, the electric latch on the seat cushion is in a locked state to ensure the support stability of the seat cushion; then, the backrest plate is rotated inwardly and closed, and the corresponding electric latch is locked to complete the support.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the auxiliary wheelchair can be moved without changing the sitting posture, unlike ordinary wheelchairs that require users to stand or others to help them sit on the wheelchair, which provides convenience for users and their families. This device can also help users complete some daily life behaviors such as moving and going to the toilet by themselves.

[0014] 1. The user can easily get into a wheelchair from a sitting position in bed without assistance from others.

[0015] 2. The lifting structure can be used to adjust the size of the wheelchair to adapt to beds and toilet environments of different heights.

[0016] 3. The support structure installed can help the elderly stand up and sit down, making it easier for them to do so.

[0017] 4. Adjust the angle of the backrest to increase user experience.

[0018] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the connection between the lifting platform and the seat cushion and backrest board in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Explosion diagram of

[0022] Figure 4 The user usage status of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 5 The user usage status of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 6 The user usage status of the embodiment of the present invention is shown in FIG. Figure 3 ;

[0025] Figure 7 The user usage status of the embodiment of the present invention is shown in FIG. Figure 4 .

[0026] In the figure: 1-base, 2-lifting platform, 3-backrest plate, 4-connecting rod, 5-connecting plate, 6-cushion rod, 7-cushion, 8-fixed box, 9-universal caster, 10-threaded rod, 12-armrest, 13-torque motor, 14-positioning plate, 15-electric latch, 16-installation slot, 17-front connecting plate, 18-rear connecting plate, 19-rotating shaft, 20-limiting rod, 21-groove, 22-pedal. DETAILED DESCRIPTION

[0027] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description.

[0028] like Figures 1 to 7 As shown, a new type of walking-assistive wheelchair comprises two parallelly arranged bases 1, and the top of the front end of the two bases is provided with a lift platform 2, the lift platform is in an inverted L shape, and its top end extends horizontally backward, and the rear ends of the two lift platforms are rotatably connected with backrest boards 3, and the two backrest boards are contacted and locked when they are rotated inwardly to the same vertical plane, so as to provide backrest support for the user, and are arranged in a square shape in conjunction with the connecting rod 4 erected between the front ends of the two lift platforms, so as to ensure the connection stability of the device, and the lower surface of the lift platform near the rear end is provided with a connecting plate 5, and a seat cushion rod 6 is hinged on the connecting plate, and the lower end of the seat cushion rod is vertically connected to the seat cushion 7, and the seat cushion and the seat cushion rod are fixedly connected as a whole, that is, when the seat cushion is rotated to the horizontal to play a supporting role, the seat cushion rod is in a vertical state, and the inner ends of the two seat cushions are contacted when they are rotated to the same horizontal plane, and the bases are connected as a whole via a fixed box 8, and universal casters 9 are installed at the bottom ends of the bases.

[0029] In the embodiment of the present invention, a threaded rod 10 is screwed into the vertical section of the lifting rod, and the lower end of the threaded rod is driven by a motor to rotate to realize the lifting of the lifting platform. The motor is installed in a fixed box, and a driving power supply connected to the motor is also provided in the fixed box.

[0030] In the embodiment of the present invention, armrests 12 are extended upward at the front ends of the tops of the two lifting and lowering devices to provide auxiliary support for the user when standing and ensure comfort in holding.

[0031] In the embodiment of the present invention, the rotation of the backrest plate and the seat cushion is provided with torque by the torque motor 13 .

[0032] In the embodiment of the present invention, a positioning plate 14 is extended from the rear end of the lifting platform and is hinged to the backrest plate. An electric latch 15 is provided between the positioning plate and the backrest plate and between the connecting plate and the seat cushion rod. The electric latch on the seat cushion passes through the connecting rod and is embedded in the seat cushion rod at the lock tongue to complete the locking limit. That is, when the two backrest plates are rotated inward to the same vertical plane and when the two seat cushions are rotated to the same horizontal plane, they are locked to play a supporting role. The electric latch uses a mini oblique tongue electric latch.

[0033] In the embodiment of the present invention, a mounting groove 16 with an inverted "convex" shaped cross-section is opened forward at the rear end of the lifting platform, and the lower end of the mounting groove passes through the lifting platform. The connecting plate includes a front connecting plate 17 and a rear connecting plate 18 that clamp the cushion rod in the middle, and is passed through a rotating shaft 19 extending forward and backward. The front end of the rotating shaft is driven by a torque motor, and the top ends of the two connecting plates are both in an inverted convex shape that cooperates with the mounting groove. The front connecting plate is connected to the bottom end of the mounting groove, and the rear end of the front connecting plate is limited by the top of the positioning plate. The front end of the positioning plate is inserted into the mounting groove and limited by the limit rod 20 that passes horizontally to the left and right.

[0034] In the embodiment of the present invention, the upper surface of the seat cushion is provided with an arc-shaped groove 21 facing downward, and the groove runs through the seat cushion from front to back, so as to ensure the comfort of the user when sitting down.

[0035] In the embodiment of the present invention, a pedal 22 extending obliquely is fixedly connected to the top of the fixed box, and the top surface of the pedal 22 extends obliquely downward from the front to the rear, so as to facilitate the foot support of the user when sitting down.

[0036] In the embodiment of the present invention, the lifting of the lifting platform, the rotation of the torque motor, the locking and unlocking of the electric lock, and the driving and walking of the casters can be controlled by setting a controller on the device or by remote control. These are all common technologies and will not be described in detail here.

[0037] Working principle of the embodiment of the present invention: When the user needs to get out of bed and sit on the wheelchair, Figure 4 , 5 As shown, it is necessary to control the rotation of the motor to lift the lifting platform to a suitable position so that the seat cushion is at the same height as the bed, and then the backrest plate is rotated outward and unfolded by the torque motor. The user can move and sit on the seat cushion. At this time, the electric latch on the seat cushion is in a locked state to ensure the support stability of the seat cushion. Then the backrest plate is rotated inward and closed, and the corresponding electric latch is locked to complete the support. The same applies to transferring from a wheelchair to a bed.

[0038] When the user needs to use the toilet in a wheelchair, Figure 6 , 7 As shown, the lifting platform is raised and lowered to a suitable position so that the seat cushion is at the same height as the toilet bowl, and then the backrest board is rotated outward and unfolded by a torque motor. The user can slowly move backward from the seat cushion to the toilet bowl, and then the electric latch on the seat cushion is unlocked and the seat cushion is unfolded, so that the user's legs are released. After completing the toileting operation, the reverse operation can be performed, that is, the seat cushion is rotated to a horizontal level and locked. After sitting on the seat cushion, the backrest board is rotated inward and locked to complete the toileting operation.

[0039] The present invention is not limited to the above-mentioned best implementation mode. Anyone can derive other various forms of new walking assistive wheelchairs and working methods thereof under the enlightenment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A new type of walking assist wheelchair, characterized by: It comprises two parallelly arranged bases, the front ends of the two bases are provided with a lift platform, the lift platform is in an inverted L shape, the top of the lift platform extends horizontally backward, the rear ends of the two lift platforms are rotatably connected with backrest plates, the two backrest plates are contacted and locked when they are turned inward to the same vertical plane, and are arranged in a square shape in conjunction with the connecting rods erected between the front ends of the two lift platforms, the lower surfaces of the lift platforms near the rear ends are provided with connecting plates, the connecting plates are hinged with seat cushion rods, the lower ends of the seat cushion rods are vertically connected to the seat cushions, the inner ends of the two seat cushions are contacted when they are turned to the same horizontal plane, the bases are connected as a whole through a fixed box, and the bottom ends of the bases are installed with universal casters; The rear end of the lifting platform extends out a positioning plate which is hinged to the backrest plate. Electric latches are provided between the positioning plate and the backrest plate, and between the connecting plate and the cushion rod. When the two backrest plates are turned inward to the same vertical plane and the two cushions are turned to the same horizontal plane, they are locked to play a supporting role. The rear end of the lifting platform is provided with a mounting groove with an inverted "convex" shaped cross-section facing forward, and the lower end of the mounting groove passes through the lifting platform. The connecting plate includes a front connecting plate and a rear connecting plate with the cushion rod clamped in the middle, and is passed through a rotating shaft extending forward and backward. The top ends of the two connecting plates are both in an inverted convex shape that cooperates with the mounting groove. The front connecting plate is top-connected to the bottom end of the mounting groove, and the rear end of the front connecting plate is top-connected to the positioning plate for limiting, and the front end of the positioning plate is inserted into the mounting groove and limited by the limiting rods that cross the left and right sides.

2. A novel walking assistive wheelchair according to claim 1, characterized in that: A threaded rod is screwed in the vertical section of the lifting platform, and the lower end of the threaded rod is driven to rotate by a motor to realize the lifting of the lifting platform. The motor is installed in a fixed box, and a driving power supply connected to the motor is also provided in the fixed box.

3. The novel walking assist wheelchair according to claim 1, characterized in that: The front ends of the tops of the two lifting platforms are both provided with handrails extending upward.

4. The novel walking assist wheelchair according to claim 1, characterized in that: The rotation of the backrest plate and the seat cushion is provided with torque by a torque motor.

5. The novel walking assistive wheelchair according to claim 1 is characterized in that: The upper surface of the seat cushion is provided with an arc-shaped groove facing downward, and the groove runs through the seat cushion front and back.

6. The novel walking assistive wheelchair according to claim 1 is characterized in that: The top of the fixed box is fixedly connected with a pedal extending obliquely, and the top surface of the pedal extends obliquely downward from the front to the rear.

7. A novel working method of a walking assist wheelchair, characterized in that: A new type of walking assistive wheelchair as described in any one of claims 1 to 6 is used, and the following steps are followed: first, the motor is controlled to rotate, thereby raising and lowering the lifting platform to a suitable position so that the seat cushion is at the same height as the bed; then, the backrest plate is rotated outward and unfolded by the torque motor, and the user can move and sit on the seat cushion. At this time, the electric latch on the seat cushion is in a locked state to ensure the support stability of the seat cushion; then, the backrest plate is rotated inward and closed, and the corresponding electric latch is locked to complete the support.

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