wheelchair

Abstract

The application provides a wheelchair, which comprises a seat, a seat cushion rotatably mounted on the seat, a lifting member movably connected to the bottom surface of the seat cushion, the moving direction of the lifting member being perpendicular to the axial direction of the rotating shaft of the seat cushion, and a driving assembly mounted on the seat, the driving assembly being connected to the lifting member and used for driving the lifting member to move up and down. When a user sits on the seat cushion, the driving assembly drives the lifting member to move up and down, the lifting member can lift the seat cushion, and the seat cushion is flipped relative to the seat, thereby helping the user to stand up.

Description

Technical Field

[0001] This invention relates to the field of wheelchair technology, and more particularly to a wheelchair. Background Technology

[0002] Wheelchair users are mostly people with mobility issues, such as people with disabilities, patients, or the elderly, who usually need to use a wheelchair to get around.

[0003] When wheelchair users get up, their center of gravity shifts upward, requiring greater leg strength to overcome their body weight. Wheelchair users already have difficulty walking, making it even more challenging for them to get up.

[0004] Therefore, a new type of wheelchair is needed to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned deficiencies of the prior art, the present invention provides a wheelchair that can help users get up.

[0006] The technical solution adopted by this invention to solve the technical problem is as follows:

[0007] A wheelchair includes: a seat; a cushion rotatably mounted on the seat; a lifting member movably connected to the bottom surface of the cushion, the lifting member moving in a direction perpendicular to the axial direction of the cushion's rotation axis; and a drive assembly mounted on the seat, the drive assembly being connected to the lifting member and used to drive the lifting member to move up and down.

[0008] Preferably, the wheelchair further includes a rotating component, which is rotatably connected to the lifting component and movably connected to the bottom surface of the seat cushion.

[0009] Preferably, the wheelchair further includes a guide rail assembly, the guide rail of which is mounted on the bottom surface of the seat cushion, and the slider of the guide rail assembly is connected to the rotating component.

[0010] Preferably, the wheelchair further includes two armrests, which are movably mounted on the seat and located on both sides of the seat cushion, and the lifting device is connected to the two armrests.

[0011] Preferably, the lifting component includes a lifting body and a crossbar, the crossbar is connected to the lifting body, both ends of the crossbar are respectively connected to the two handrails, the driving component is connected to the lifting body, and the rotating component is connected to the lifting body.

[0012] Preferably, the drive assembly includes a driver and a lead screw. The driver is mounted on the seat and connected to the lead screw to drive the lead screw to rotate. The lifting body is provided with a nut structure that cooperates with the lead screw.

[0013] Preferably, the wheelchair further includes two sets of guide assemblies, which are located on both sides of the lifting body. Each guide assembly includes a guide rod and a guide sleeve that cooperate with each other. The guide sleeve is connected to the lifting body, and the guide rod is connected to the seat.

[0014] Preferably, the wheelchair further includes multiple linear bearings, with the linear bearings respectively located on both sides of the seat, and the armrest includes an armrest body and a connecting shaft, with the connecting shaft passing through the linear bearings and one end connected to the armrest body.

[0015] Preferably, the wheelchair further includes a pedal assembly, which includes a connecting rod, a damping rod, and a pedal. One end of the connecting rod is hinged to the seat, and the other end is connected to the pedal. The damping rod is located on the side of the connecting rod closer to the seat, and one end of the damping rod is hinged to the seat, while the other end is hinged to the connecting rod.

[0016] Preferably, the wheelchair further includes a massage assembly and a tension spring. The massage assembly includes a rear seat, two side panels, and multiple torsion springs. The two side panels are located on both sides of the rear seat and are hinged to the rear seat. The torsion springs are connected to the rear seat and the side panels, and are used to generate an elastic force to keep the two side panels relatively closed. The inner side of the side panels is provided with massage protrusions. The rear seat passes through the connecting rod. The connecting rod is provided with a flange for supporting the rear seat. The end of the connecting rod near the pedal is provided with a column cavity and a side notch. The pedal includes a foot support plate and a connecting column. The connecting column passes through the column cavity. One end of the connecting column is connected to the foot support plate, and the other end is provided with a connecting piece on its side. The connecting piece passes through the side notch. The two ends of the tension spring are respectively connected to the flange and the connecting block.

[0017] Compared with the prior art, the present invention has the following main advantages:

[0018] When a user sits on the cushion, the drive assembly drives the lifting component to move up and down. The lifting component can lift the cushion, and the cushion can flip relative to the seat to help the user get up. Attached Figure Description

[0019] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the wheelchair involved in this invention;

[0021] Figure 2 This is an exploded view of the wheelchair involved in this invention.

[0022] Figure label:

[0023] 100-Wheelchair, 10-Seat, 11-Mounting plate, 12-Front wheel, 13-Rear wheel, 14-Control switch, 20-Seat cushion, 21-Guide rail assembly, 31-Lifting component, 311-Lifting main body, 312-Crossbar, 32-Rotating component, 40-Drive assembly, 41-Driver, 42-Lead screw, 50-Armrest, 51-Armrest main body, 52-Connecting shaft, 611-Guide rod, 612-Guide sleeve, 62-Linear bearing, 70-Pedal assembly, 71-Connecting rod, 711-Flange, 712-Side notch, 72-Damping rod, 73-Pedal, 731-Foot support plate, 732-Connecting column, 733-Connecting piece, 80-Massage assembly, 81-Rear seat, 82-Side plate, 83-Torsion spring, 90-Tension spring. Detailed Implementation

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the wheelchair 100 involved in this invention; Figure 2 This is an exploded view of the wheelchair 100 involved in this invention.

[0027] like Figures 1 to 2As shown, a preferred embodiment of the present invention provides a wheelchair 100, which includes: a seat 10, a cushion 20, a lifting component 31, a drive assembly 40, a rotating component 32, a guide rail assembly 21, an armrest 50, a guide assembly, a linear bearing 62, a pedal assembly 70, a massage assembly 80, a tension spring 90, a front wheel 12, a rear wheel 13, and a control switch 14. Figure 1 In the middle, the seat cushion 20 is in a horizontal position. Figure 2 In the middle, the seat cushion 20 is rotated at a certain angle relative to the seat 10.

[0028] The wheelchair 100 can be used by people with mobility impairments, such as people with disabilities, patients, or the elderly, and can help users get up. In some examples, the wheelchair 100 can be used as a mechanical accessible wheelchair for the elderly.

[0029] The seat cushion 20 is rotatably mounted on the seat 10; the lifting member 31 is movably connected to the bottom surface of the seat cushion 20, and the direction of movement of the lifting member 31 relative to the seat cushion 20 is perpendicular to the axis of rotation of the seat cushion 20; the drive assembly 40 is mounted on the seat 10, and the drive assembly 40 is connected to the lifting member 31 and is used to drive the lifting member 31 to move up and down.

[0030] In this embodiment, the user sits on the cushion 20, and the drive assembly 40 drives the lifting member 31 to move up and down. The lifting member 31 can lift the cushion 20, and the cushion 20 flips relative to the seat 10, which can help the user get up.

[0031] The seat 10 may be equipped with front wheels 12 and rear wheels 13 at its bottom. The rear wheels 13 may be equipped with motors, which drive the rear wheels 13 to rotate, thereby moving the wheelchair 100. The seat 10 may have a backrest with handles, and the wheelchair 100 may also be pushed manually. Armrests 50 may be provided on both sides of the seat 10.

[0032] The seat cushion 20 is rotatably mounted on the seat 10. A user can sit on the seat cushion 20. The seat cushion 20 is hinged to the front end of the seat 10. When in a horizontal position, the seat cushion 20 rests on the seat 10. The seat cushion 20 can be flipped under the drive of the drive assembly 40, with a maximum flip angle of 60°.

[0033] The lifting member 31 is movably connected to the bottom surface of the seat cushion 20, and the direction of movement of the lifting member 31 relative to the seat cushion 20 is perpendicular to the axial direction of the rotation axis of the seat cushion 20. The seat cushion 20 rotates relative to the seat 10, and this rotation naturally forms a rotation axis, which can be a physical axis or a virtual axis. The seat cushion 20 can be mounted to the seat 10 via hinges, in which case the hinge axis is the rotation axis of the seat cushion 20. The lifting member 31 moves on the bottom surface of the seat cushion 20, and the direction of movement of the lifting member 31 relative to the seat cushion 20 is radial along the rotation axis. The lifting member 31 applies a force to the seat cushion 20, which can drive the seat cushion 20 to flip.

[0034] The rotating member 32 is rotatably connected to the lifting member 31, and the rotating member 32 is movably connected to the bottom surface of the seat cushion 20. As the lifting member 31 rises, the rotating member 32 moves along the rotation axis away from the seat cushion 20, and the rotating member 32 can apply a force to the seat cushion 20 to drive the seat cushion 20 to flip upward.

[0035] The guide rail assembly 21 is mounted on the bottom surface of the seat cushion 20, and the slider of the guide rail assembly 21 is connected to the rotating component 32. The rotating component 32 is connected to the seat cushion 20 through the guide rail assembly 21, which can reduce friction and make the seat cushion 20 flip more smoothly. In some other examples, a roller can also be provided on the top of the lifting component 31, and the roller can be disengaged from the bottom surface of the seat cushion 20.

[0036] The wheelchair 100 also includes two armrests 50, which are movably mounted on the seat 10 and located on both sides of the seat cushion 20. A lifting mechanism 31 is connected to the two armrests 50. When the lifting mechanism 31 moves upward, the seat cushion 20 flips up, and the two armrests 50 move upward simultaneously. As a result, during the process of getting up, the hands can exert force, and the angle between the upper and lower arms changes less, thereby reducing the burden on the muscles of both arms.

[0037] The lifting component 31 includes a lifting body 311 and a crossbar 312. The crossbar 312 is connected to the lifting body 311, and its two ends are connected to two armrests 50 respectively. The drive assembly 40 is connected to the lifting body 311, and the rotating component 32 is connected to the lifting body 311. As a result, the left and right sides of the lifting body 311 are balanced, and the wheelchair 100 can maintain good stability during use.

[0038] The drive assembly 40 includes a driver 41 and a lead screw 42. The driver 41 is mounted on the seat 10 and is connected to the lead screw 42 to drive its rotation. The lifting body 311 has a nut structure that mates with the lead screw 42. The seat 10 has a mounting plate 11 below the seat cushion 20. The driver 41 can be a motor, mounted on a motor mount, which is mounted on the mounting plate 11. The lower end of the lead screw 42 is connected to the driver 41 via a coupling. The lifting body 311 can be cylindrical, with a nut structure inside that mates with the lead screw 42. The driver 41 drives the lead screw 42 to rotate, and the lead screw 42, in conjunction with the nut structure, drives the lifting component 31 to move up and down. The driver 41 can also drive the lifting component 31 to move up and down via other types of transmission mechanisms, such as a rack and pinion mechanism, a belt drive mechanism, or a chain drive mechanism.

[0039] The wheelchair 100 also includes two sets of guide assemblies, located on either side of the lifting body 311. Each guide assembly includes a cooperating guide rod 611 and a guide sleeve 612. The guide sleeve 612 is connected to the lifting body 311, and the guide rod 611 is connected to the seat 10. The upper end of the guide sleeve 612 is fixedly connected to the lifting body 311, and the lower end of the guide rod 611 is fixedly connected to the mounting plate 11 via a motor mount. The guide assemblies improve the stability of the lifting component 31 during vertical movement.

[0040] The wheelchair 100 also includes multiple linear bearings 62. Linear bearings 62 are respectively provided on both sides of the seat 10. The armrest 50 includes an armrest body 51 and a connecting shaft 52. The connecting shaft 52 passes through the linear bearings 62 and is connected at one end to the armrest body 51. This improves the stability of the armrest 50 during vertical movement and prevents wobbling when the user gets up. Two linear bearings 62 can be provided on each side of the seat 10, with the connecting shaft 52 passing through both linear bearings 62, thereby further improving the stability of the armrest 50 during vertical movement.

[0041] The pedal assembly 70 includes a connecting rod 71, a damping rod 72, and a pedal 73. One end of the connecting rod 71 is hinged to the seat 10, and the other end is connected to the pedal 73. The damping rod 72 is located on the side of the connecting rod 71 closer to the seat 10, with one end hinged to the seat 10 and the other end hinged to the connecting rod 71. When the user steps on the pedal 73, the connecting rod 71 rotates, causing the length of the damping rod 72 to change. The damping rod 72 provides damping to mitigate this change in length, preventing the connecting rod 71 from rotating too quickly and causing a hazard. The damping rod 72 can be a hydraulic buffer rod or a spring rod, and its length is extendable, providing a cushioning effect.

[0042] The massage assembly 80 includes a rear seat 81, two side plates 82, and multiple torsion springs 83. The two side plates 82 are located on both sides of the rear seat 81 and are hinged to the rear seat 81. The torsion springs 83 are connected to the rear seat 81 and the side plates 82. The torsion springs 83 are used to generate elastic force to keep the two side plates 82 relatively closed. The inner side of the side plates 82 is provided with massage protrusions. The rear seat 81 is inserted through a connecting rod 71. The connecting rod 71 is provided with a flange 711 for receiving the rear seat 81. The end of the connecting rod 71 near the pedal 73 is provided with a column cavity and a side notch 712. The pedal 73 includes a foot support plate 731 and a connecting post 732. The connecting post 732 is inserted through the column cavity. One end of the connecting post 732 is connected to the foot support plate 731, and the other end is provided with a connecting piece 733 on the side. The connecting piece 733 passes through the side notch 712. The two ends of the tension spring 90 are connected to the flange 711 and the connecting block, respectively. When the user steps on the pedal 73, the two side plates 82 press against the calf under the action of the torsion spring 83. As the user presses down, the calf moves between the two side plates 82, and the massage protrusions provide a massage effect, relieving fatigue, numbness, or soreness. The tension spring 90 exerts an upward pull on the pedal 73, assisting in lifting the foot. The user can lift their foot with less force, reducing the burden on the leg muscles and further improving the massage effect. The connecting rod 71 can be a hollow tube or a solid rod with a cavity at the lower end. Connecting plates 733 can be provided on both sides of the upper end of the connecting column 732, with a tension spring 90 on each side, forming a symmetrical structure.

[0043] In some cases, prolonged sitting can lead to decreased cardiac function and slower blood circulation, resulting in limb ischemia and insufficient oxygen supply. The massage component 80 can be used to massage the user's leg muscles, promoting blood circulation and preventing muscle relaxation, atrophy, stiffness, and soreness. It can relieve muscle fatigue, numbness, or soreness after prolonged sitting.

[0044] The control switch 14 can be installed on the handrail 50. The user can operate the control switch 14 to control the rear wheel 13 drive motor and the lifting motion driver 41.

[0045] In this embodiment, the user sits on the seat cushion 20, and the drive assembly 40 drives the lifting component 31 to move up and down. The lifting component 31 can lift the seat cushion 20, causing it to flip relative to the seat 10, which helps the user get up. The user's feet are on the footrest 73, and the massage component 80 can massage the leg muscles, relieving fatigue, numbness, or soreness. The wheelchair 100 provided in this embodiment has an assistive standing function. Its included screw mechanism can lift and flip the seat cushion 20. At the same time, the armrests 50 rise with the lifting component 31 to assist the arms in exerting force, which is of great help to people with mobility impairments. The wheelchair 100 provided in this embodiment is also equipped with a massage mechanism. The lower legs are placed in massage claws that can be tightened and loosened. As the legs move up and down, the lower legs can be massaged, which can relieve muscle fatigue, numbness, or soreness after sitting for a long time.

[0046] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A wheelchair, characterized in that, include: Seats; A seat cushion, rotatably mounted on the seat; A lifting component is movably connected to the bottom surface of the seat cushion, and the direction of movement of the lifting component relative to the seat cushion is perpendicular to the axis of rotation of the seat cushion. A drive assembly is installed on the seat, the drive assembly is connected to the lifting component and is used to drive the lifting component to move up and down; A pedal assembly, comprising a connecting rod and a pedal, wherein one end of the connecting rod is hinged to the seat and the other end is connected to the pedal; A massage assembly and a tension spring are provided. The massage assembly includes a rear seat, two side plates, and multiple torsion springs. The two side plates are located on both sides of the rear seat and are hinged to the rear seat. The torsion springs are connected to the rear seat and the side plates and generate an elastic force to keep the two side plates relatively closed. The inner side of the side plates is provided with massage protrusions. The rear seat passes through a connecting rod. The connecting rod is provided with a flange for receiving the rear seat. The end of the connecting rod near the pedal is provided with a column cavity and a side notch. The pedal includes a foot support plate and a connecting post. The connecting post passes through the column cavity. One end of the connecting post is connected to the foot support plate, and the other end is provided with a connecting piece on its side. The connecting piece passes through the side notch. The two ends of the tension spring are connected to the flange and the connecting piece, respectively.

2. The wheelchair according to claim 1, characterized in that, It also includes a rotating component, which is rotatably connected to the lifting component and movably connected to the bottom surface of the seat cushion.

3. The wheelchair according to claim 2, characterized in that, It also includes a guide rail assembly, wherein the guide rail of the guide rail assembly is mounted on the bottom surface of the seat cushion, and the slider of the guide rail assembly is connected to the rotating component.

4. The wheelchair according to claim 2, characterized in that, It also includes two armrests, which are movably mounted on the seat and located on both sides of the seat cushion, and the lifting device is connected to the two armrests.

5. The wheelchair according to claim 4, characterized in that, The lifting component includes a lifting body and a crossbar. The crossbar is connected to the lifting body, and both ends of the crossbar are respectively connected to the two handrails. The driving component is connected to the lifting body, and the rotating component is connected to the lifting body.

6. The wheelchair according to claim 5, characterized in that, The drive assembly includes a driver and a lead screw. The driver is mounted on the seat and is connected to the lead screw to drive the lead screw to rotate. The lifting body is provided with a nut structure that cooperates with the lead screw.

7. The wheelchair according to claim 5, characterized in that, It also includes two sets of guide components, which are located on both sides of the lifting body. Each guide component includes a guide rod and a guide sleeve that cooperate with each other. The guide sleeve is connected to the lifting body, and the guide rod is connected to the seat.

8. The wheelchair according to claim 4, characterized in that, It also includes multiple linear bearings, with the linear bearings respectively located on both sides of the seat. The armrest includes an armrest body and a connecting shaft, with the connecting shaft passing through the linear bearings and one end connected to the armrest body.

9. The wheelchair according to any one of claims 1 to 8, characterized in that, The pedal assembly includes a damping rod located on the side of the connecting rod closer to the seat. One end of the damping rod is hinged to the seat, and the other end is hinged to the connecting rod. The damping rod is a hydraulic damping rod or a spring rod.

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