JP2021520284A - Multi-function wheelchair - Google Patents

Abstract

The multifunctional wheelchair disclosed in the present application includes a wheeled base and further includes an adjustable lifting device connected above the base. Adjustable elevating devices include a bottom plate, a backrest hinged to the rear end of the bottom plate, a lower connecting plate connected to the base, and a support structure hinged between the bottom plate and the lower connecting plate. The support structure includes a front support rod assembly and a rear support rod assembly. The adjustable elevating device further includes a drive mechanism for rotationally driving the support structure and / or elevating the bottom plate. The drive mechanism produces a rotary or linear motion to bring the parallelogram mechanism formed by the bottom plate, the front support rod assembly, the lower connecting plate, and the rear support rod assembly into the deployed or retracted state. Adopt a structural form in which the base and the adjustable lifting device work together. [Selection diagram] Fig. 3

Description

The present application claims its priority on the basis of application number 201810331080.7, filing date April 13, 2018 in China, and the entire contents of the application are incorporated herein by one.

The present application relates to medical care equipment, and particularly to a multifunctional wheelchair used for a bedridden patient or a patient who cannot move voluntarily.

Currently, wheelchairs designed for long-term bedridden people and people with disabilities have a single function and meet only some of the usage needs such as the user moving in a wheelchair. It is immutable due to structural fixation, and when the user moves from the bed to the wheelchair, multiple people need to hold it at the same time, which stresses the patient's family and caregiver, and takes time and effort. It takes a lot of time and the user has a hard time. Since giving care by multiple families or caregivers at the same time puts a great deal of financial stress on the family, there is a need for a multifunctional wheelchair that is multifunctional, structurally flexible, and reduces the number of auxiliary staff.

An object of the present application is to overcome the deficiencies of the prior art and to provide a multifunctional wheelchair.

In order to achieve the above object, the present application employs the following technical means.

A multifunctional wheelchair including a wheeled base, further including an adjustable lifting device connected above the base, wherein the adjustable lifting device is a bottom plate, a backrest hinged to the rear end of the bottom plate. Includes a lower connecting plate connected to the base and a hinge-connected support structure between the bottom plate and the lower connecting plate, the support structure including an anterior support rod assembly, a rear support rod assembly, and adjustable. The lifting device further includes a driving mechanism for rotational driving of the support structure and / or lifting driving of the bottom plate, and the driving mechanism is formed by a bottom plate, a front support rod assembly, a lower connecting plate, and a rear support rod assembly. Generates a rotational or linear motion to bring the parallel quadrilateral mechanism to the unfolded or retracted state.

Further, the upper support plate of the base is provided with a slide groove, and a pulley slidably engaged with the slide groove is provided below the lower connecting plate to provide an adjustable lifting device. Form a slide removable connection with the base. Alternatively, the lower connecting plate is an upper support plate of the base and forms an integral structure. Alternatively, the lower connecting plate is fixedly connected to the upper supporting plate provided on the base.

Further, the slide detachable connection employs a slide lock structure, and specifically includes a pair of stoppers provided on the front and rear of the base, two slide grooves, two dampers, and two lock stoppers. The two lock stoppers penetrate the top plate of the base, extend downward and are connected above the unlock bracket. The unlock bracket is slidably connected below the top plate of the base via a guide rod. A self-locking spring that comes into contact with the lower part of the unlock bracket is externally inserted into the guide rod. The stopper abuts on the fixing projection on the underside of the lower connecting plate of the adjustable elevating device.

Further, the adjustable lifting device further includes a front bezel hinged to the front end of the bottom plate, a front grip hinged to the center of the front end of the bottom plate, and a neck provided at the outer end of the backrest. Further including a pillow, the front support rod assembly includes a left front support rod and a right front support rod, and the rear support rod assembly includes a left rear support rod and a right rear support rod.

Further, a defecation through hole is provided in the center of the bottom plate, and an elastic frame type holder located below the defecation through hole is provided below the bottom plate so as to support the excrement container by elastic force. It has become.

Further, the drive mechanism is a motor with a reduction mechanism, and the reduction mechanism is provided with an output shaft and is transmitted and connected to a rotation shaft of either a front support rod assembly or a rear support rod assembly. Alternatively, the drive mechanism is a manual urging lever that generates rotational power, and a torque connecting portion is provided at the outer end of the swivel shaft of either the front support rod assembly or the rear support rod assembly. The manual urging lever is transmitted and connected to the torque connecting portion. Alternatively, the drive mechanism is a linear motion mechanism provided between the lower connecting plate and the bottom plate, the front support rod assembly, or the rear support rod assembly, and the linear motion mechanism is an electric push rod or air. A cylinder, hydraulic cylinder, or ball screw transmission mechanism. Alternatively, the drive mechanism is an air cell provided between the lower connecting plate and the bottom plate, and an air pump connected to the ventilation path of the air cell. Alternatively, the drive mechanism is a magnetic mechanism provided between the lower connecting plate and the bottom plate, and the magnetic mechanism is fixed to the lower coil fixed to the upper surface of the lower connecting plate and the lower surface of the bottom plate. The upper coil, the upper coil, and the drive circuit electrically connected to the lower coil are included, and the upper coil and the lower coil generate a magnetic field of the same level and generate a repulsive force upward of the bottom plate.

Further, an axially length-adjustable rod-shaped drip stand is hinged to the left and / or right sides of the base.

Further, a stiffener is connected to the base, and the stiffener has a portal frame structure and is connected to the left rear side and the right rear side of the base. When the backrest and the bottom plate are in a 180-degree unfolded state, the lateral push rod is locked in a lateral locking groove provided on the rear back surface of the backrest.

Further, right-angled armrests are hinged to both sides of the base, and the right-angled armrests are retracted when rotated 90 degrees forward.

Further, each of the tops of the adjustable armrests is provided with an outlet for an external table.

Further, a pedal is provided at the front end of the base.

The multifunctional wheelchair of the present application has the following remarkable advantages as compared with a conventional wheelchair.

In this application, the height and angle of the wheelchair body can be adjusted by adopting a structural form in which the base and the adjustable elevating device cooperate, which has wider applicability and beds of various heights. And meet various usage needs such as flat reclining, upright, moving, folding, etc. By adopting a slide removable structure, it is easy to separate the wheelchair body and the base, it is lighter, the physical expenditure of the caregiver and the patient's family is reduced, and when it is used less in the mobile work state, Multiple wheelchair bodies can share one base and reduce cost expenditure. The adjustable lifting device further includes a bottom plate centered on a defecation through hole, a front bezel to support the lower legs, a front grip for the user to approach and a neck pillow to support the head for comfort. And have higher safety. Since multiple types of power drive mechanisms can be used, the manufacturer has the flexibility to choose according to different costs and manufacturing priorities. The base is equipped with a stiffener to push the wheelchair, an armrest to support the user's elbow, an external table to put things on, and a pedal to support the foot, and it is fully functional and durable. be.

In order to more clearly understand the above objectives, features and advantages of the present application, the present application will be described in more detail below in connection with the drawings and specific embodiments.

It is a structural drawing of the stored state in the specific embodiment of the multifunctional wheelchair of this application. It is a structural diagram of the deployed state (lying state) in the specific embodiment of the multifunctional wheelchair shown in FIG. It is a structural diagram of the deployed state in the specific embodiment of the multifunctional wheelchair shown in FIG. 1 (sitting state). It is a side view of FIG. It is a drawing of the base part of the multifunctional wheelchair of this application shown in FIG. It is a bottom perspective view of the adjustable lifting device of the multifunctional wheelchair of this application. FIG. 6 is a development view of a simplified support structure and a drive mechanism of the adjustable lifting device of FIG. It is a side view of FIG. 5 (state in which casters are disassembled). It is a bottom perspective view of FIG.

To facilitate a full understanding of the present application, many specific details are provided in the detailed description below, but the present application may be otherwise different from those described herein. It may be realized and implemented. Therefore, the scope of protection of the present application is not limited by the specific examples disclosed below.

As shown in FIG. 1, the multifunction wheelchair includes a base 1 having wheels 17 and further includes an adjustable elevating device 2 connected above the base 1.

As shown in FIGS. 2 to 4, the adjustable elevating device 2 includes a bottom plate 3, a backrest 4 hinged to the rear end of the bottom plate 3, a lower connecting plate 5 connected to the base 1, and a bottom plate 3. Includes a support structure 6 hinged to and from the lower connecting plate 5. The support structure 6 includes a front support rod assembly 61 including a left front support rod and a right front support rod, and a rear support rod assembly 62 including a left rear support rod and a right rear support rod. The adjustable elevating device 2 further includes a drive mechanism for rotationally driving the support structure 6 and / or for elevating and driving the bottom plate 3, which produces a rotary or linear motion. The parallelogram mechanism formed by the bottom plate 3, the front support rod assembly 61, the lower connecting plate 5, and the rear support rod assembly 62 is brought into the deployed or retracted state. The multifunctional wheelchair of the present application is in an operating state in a deployed state and assists a caregiver or a family member of a care patient in performing daily cleaning activities for the user. When in the stowed state, the multifunctional wheelchair of the present application can be folded and stowed, easily stowed in any corner with a minimum volume, and the space occupancy can be reduced.

As shown in FIGS. 4 and 5, two front and rear sets of wheels 17 are symmetrically attached below the base 1. The wheels 17 are detachably screwed to the base 1, and the screwing height can be adjusted as necessary by artificially increasing or decreasing the screwing amount. If the height of the adjustable elevating device 2 cannot meet the usage requirements due to the different bed heights to which the present application applies, the wheels 17 on the base 1 supplement the overall height of the multifunction wheelchair. However, its adjustable height range applies to most beds used on the market and has wide versatility.

In the first embodiment, as shown in FIGS. 6 and 7, the front lower support shaft 57, the front upper support shaft 59, the rear lower support shaft 63, and the rear upper support shaft 64 are connected by four hinges of the support structure 6. Configure the position. The first electric push rod 111 is an electric telescopic rod, and the fixed end of the first electric push rod 111 is a fixing bracket of the adjustable lifting device 2 (provided on the lower connecting plate 5 and the lower connecting plate 5). The movable end is hinged to (a part of), and the movable end is fitted onto the outer periphery of the push shaft 58 via the connector 56. At both ends of the push shaft 58, rollers 52 that roll in the roller groove 55 provided on the left front support rod and the right front support rod are provided. The fixed bracket of the adjustable elevating device 2 is further provided with an intermediate support rotating shaft 54 in which both ends are hinged to the fixed bracket. At the base end of the intermediate support rotating shaft 54, an intermediate support arm 53 perpendicular to the axis is provided. An upper roller shaft 51 having a relatively small diameter is provided at the tip of the intermediate support arm 53. Both ends of the push shaft 58 are pivotally attached to the middle of the intermediate support arm 53, respectively. When the adjustable lifting device 2 is raised, the outer surface of the roller 52 comes into contact with the roller groove 55, and when the free end of the first electric push rod 111 protrudes, the roller 52 rolls in the roller groove 55, and the bottom plate 3 and the front side A parallelogram consisting of a support rod assembly 61, a lower connecting plate 5 and a rear support rod assembly 62 is stretched. When the adjustable elevating device 2 is raised to a predetermined height (close to the maximum open state), the roller 52 is disengaged from the roller groove 55 and no bearing force is generated, and the upper roller 51 at the tip of the intermediate support arm 53 is not generated. Abuts on both sides of the roller groove 55 to generate a bearing force, the force arm at this time becomes large, and the reaction force received by the first electric push rod 111 becomes small, so that the adjustable lifting device 2 is opened. The state can be made more stable. Such a support structure increases the initial force during the ascent of the adjustable elevating device 2, shortens the stroke of the electric push rod, which receives a small force in the maximum state, and secures the structural stability of each member. , It is advantageous for extending the service life. The upper roller 51 preferably has a stepped structure in which the diameters at both ends are smaller than those in the middle portion.

In another embodiment, the upper support plate of the base 1 of the multifunctional wheelchair of the present application is provided with a slide groove 13, and a pulley slidably engaged with the slide groove 13 is provided below the lower connecting plate 5. It constitutes a slide-detachable connection between the adjustable elevating device 2 and the base 1.

As shown in FIGS. 5, 8 and 9, in other embodiments, the removable connection between the adjustable elevating device 2 and the base 1 is made using a slide lock structure. On the upper surface of the base 1, a pair of front and rear four stoppers 12, two slide grooves 13, two dampers 14, and two lock stoppers 15 are provided. The two lock stoppers 15 penetrate the upper surface plate (that is, the upper surface) of the base 1 and extend downward to be connected above the unlock bracket 19. The unlock bracket 19 is slidably connected below the top plate of the base 1 via a guide rod. A self-locking spring 18 that comes into contact with the lower part of the unlocking bracket 19 is extrapolated to the guide rod. The damper 14 is provided with a spring that buffers the damper inside, and reduces secondary obstacles to the user due to inertia during assembly. The stopper 12 is provided with two sets of fixing protrusions (not shown, two near the front end and two near the rear end) on the lower surface of the lower connecting plate 5 of the adjustable lifting device 2, and corresponds to the number of stoppers 12. It is used for position regulation after assembly. When a multifunctional wheelchair is used in combination, the lower connecting plate 5 of the adjustable lifting device 2 is placed in the slide groove 13 in the horizontal direction from the rear end to the front end of the base 1 due to the regulation of the two slide grooves 13. When the fixing protrusion on the lower surface of the lower connecting plate 5 acts on the guide slope of the lock stopper 15, the lock stopper 15 is pushed down downward, and the fixing protrusion near the rear end is the most of the lock stopper 15. After getting over the upper end, the lock stopper 15 is automatically pushed upward by the spring force of the self-lock spring 18 against the unlock bracket 19, and the fixing protrusion near the rear end is between the stopper 12 at the rear end and the lock stopper 15. It is positioned and ready for assembly. By using the slide groove 13 and the damper 14, labor saving and safety in the assembly process are ensured, and by using the stopper 12 and the lock stopper 15, the assembly effect is strong and reliable. When disassembling the assembled wheelchair, a pressing force is applied to the lock stopper 15, the upper surface of the lock stopper 15 is pressed so as to be flush with the upper surface of the lower connecting plate 5, and the elastic force of the damper 14 is applied in the anti-assembly direction. When the adjustable lifting device 2 is unlocked from the base 1 and the adjustable lifting device 2 is pulled in and disassembled by an external force, the disassembling work can be saved and one worker is required. Can be done with. When disassembling specifically, the user steps down the horizontal bar of the unlock bracket 19 with his foot (or pushes it downward with another work tool), applies downward pressure to the unlock bracket 19, and self-locks. Adjustable by pressing the lock stopper 15 downward against the spring force of the spring 18 so that the upper surface thereof is flush with the upper surface of the lower connecting plate 5 and directing the spring force of the damper 14 to the anti-assembly side. The elevating device 2 is released from the locked connection with the base 1 (that is, the assembled state is released), and the elevating device 2 adjustable by an external force is pulled in and disassembled. Such a foot-stepping unlocking structure reduces the work strength of the disassembly worker and can be easily and reliably performed. Of these, the stopper 12 is configured in an inverted L shape in this embodiment, forms a positioning cavity for accommodating the fixing protrusion, and the adjustable lifting device 2 is detached upward from the base 1 in the assembled state. To prevent that.

In another embodiment, the lower connecting plate 5 is the upper support plate of the base 1, and the multifunction wheelchair constitutes an integral structure.

Alternatively, the lower connecting plate 5 is fixedly connected to the upper support plate provided on the base 1 by a method such as screwing or welding, which ensures the reliability of the wheelchair in order to obtain a multifunctional wheelchair having an integrated structure. It is also to do.

As shown in FIG. 2, the adjustable elevating device 2 further includes:
Front bezel 21 hinged to the front end of the bottom plate 3: In the seated operation state of the wheelchair, the front bezel 21 inclines according to the lower leg of the user to give support to the legs.
Front grip 22 hinged to the center of the tip of the bottom plate 3: When the wheelchair is in the seated operating state, the front grip 22 rotates from the horizontal state to the vertical state and is gripped by the user, and the wheelchair is moving. Relieve the tension of the user.
Neck pillow 23 provided at the outer end of the backrest 4: The neck pillow 23 is customized according to the purpose of use of the user, and is fixedly connected to the outer end of the backrest 4 or integrated with the outer end of the backrest 4. Or an insertion groove is provided at the outer end of the backrest 4, and a plug of the other party is provided at the lower part of the neck pillow 23 to be operably connected.

As shown in FIG. 9, in another embodiment, the fixed end of the second electric push rod 112 is fixedly connected to the lower bracket of the base 1, and the movable end is hinged to the handrail lower link 117. The handrail lower link 117 is fixedly connected to the grab bar 16 via a fixedly connected handrail side connecting plate 115, and the handrail side connecting plate 115 is perpendicular to the grab bar 16. When the grab bar 16 is in the horizontal state, it is in the contracted state, and the movable state of the second electric push rod 112 is in the extended state. In the operating state, the movable end of the second electric push rod 112 contracts to rotate the handrail lower link 117, the handrail lower link 117 rotates, and the handrail side connecting plate 115 is fixedly connected. The grab bar 16 is rotated upward, and the grab bar 16 is stretched to support the user's elbow.

Further, as shown in FIG. 9, a pedal link 116 is inserted in the middle of the handrail lower link 117. One end of the pedal link 116 is hinged to the lower handrail link 117, and the other end is hinged to the lower center of the front pedal 21. In the operating state, the movable end of the second electric push rod 112 contracts to rotate the handrail lower link 117, rotate the handrail lower link 117, and rotate the pedal link 116 to connect the front. The pedal 21 is rotated from the rear side to the front side to relax the legs when the user sits down.

Further, as shown in FIG. 8, the fixed end of the third electric push rod 113 is fixedly connected to the fixed bracket of the base 1, and the movable end is hinged to the lower end of the strut 114. As can be seen from FIGS. 1 to 3, the strut 114 is fixedly connected vertically to the left side rod 71 and the right side rod. When the backrest 4 is opened at an angle larger than 90 degrees, the third electric push rod 113 rotates, and the strut 114, the left side rod 71, and the right side rod rotate downward, and the side push rod 72 rotates on the backrest. When it comes into contact with the lower surface of 4, the drive mechanism stops driving and reaches a stable state, gives sufficient support to the backrest 4, and guarantees smooth support of the user's back.

The electric push rod in the above embodiment can be replaced with another linear motion mechanism such as a ball screw mechanism with a motor, a screw mechanism, an air cylinder having a built-in pressure source, or a hydraulic cylinder.

As shown in FIGS. 2 and 3, a defecation through hole 31 is provided in the center of the bottom plate 3, and an elastic frame-shaped holder located below the defecation through hole 31 is provided below the bottom plate 3 for excrement. It elastically supports the container and enhances the efficiency of supporting the excrement container and the convenience of attaching and detaching the container.

In another embodiment, a defecation through hole 31 is provided in the center of the bottom plate 3 for the user to excrete on a daily basis in a wheelchair, and is located below the bottom plate 3 below the defecation through hole 31. A slide groove or support for slidably connecting or supporting a toilet bowl, a disposable excrement bag, or other excrement container that can be selectively used according to a specific need is provided.

In another embodiment, the drive mechanism of the multifunctional wheelchair of the present application is a motor with a reduction mechanism. The speed reduction mechanism includes an output shaft and is transmission-connected to the rotation shaft of either the front support rod assembly 61 or the rear support rod assembly 62.

In another embodiment, the drive mechanism is a manual urging lever that produces rotational power, and the outer end of the axis of rotation of either the front support rod assembly 61 or the rear support rod assembly 62 is manually urged. A torque connecting portion is provided to which the lever is transmitted and connected.

In another embodiment, the drive mechanism is a linear motion mechanism provided between the lower connecting plate 5 and the bottom plate 3, the front support rod assembly 61, or the rear support rod assembly 62, and the linear motion mechanism is , Electric push rod, air cylinder, hydraulic cylinder, or ball screw actuator.

In another embodiment, the drive mechanism is an air cell arranged between the lower connecting plate 5 and the bottom plate 3, and an air pump connected to the air passage of the air cell.

In another embodiment, the drive mechanism is a magnetic mechanism provided between the lower connecting plate 5 and the bottom plate 3, and the magnetic mechanism is a lower coil fixed to the upper surface of the lower connecting plate 5 and a bottom plate. The upper coil fixed to the lower surface of No. 3 and a drive circuit electrically connected to the upper coil and the lower coil are included. The upper coil and the lower coil generate the same level of magnetic field, and an upward repulsive force is generated on the bottom plate 3.

As shown in FIGS. 2 to 3, a drip stand 11 having an axial length adjustable rod-like structure is hinged to the left side and / or the right side of the base 1. When the user defecates with the multifunctional wheelchair of the present application or performs other daily cleaning work during the drip, the drip stand 11 is extended from the stored state to a desired height to suspend the drip bottle / bag. used.

In another embodiment, the stiffener 7 is connected to the base 1. The stiffener 7 has a gate-shaped frame structure, and is a left rear rod 71 connected to the left rear side and the right rear side of the base 1, a right rod, and a lateral push rod connected to the left rear rod 71 and the rear end of the right rod. 72 is included. The stiffener 7 is for the caregiver or the patient's family to push and move the wheelchair from the rear side. In a state where the backrest 4 and the bottom plate 3 are deployed 180 degrees, the lateral push rod 72 is hooked on the lateral locking groove provided on the back surface of the backrest 4, giving upward support to the backrest 4 portion, and a washroom or the like. This is to ensure the safety of the patient in the sleeping state of the patient.

In another embodiment, right-angled armrests 8 are hinged to both sides of the base 1. When the right-angled armrest 8 is rotated 90 degrees forward, it is in the retracted state. The right-angled armrest 8 is in a vertical state and is used by the user. Further, an outlet for an external table 9 is provided above the right-angled armrest 8 for placing articles necessary for the user to eat, read, bathe, etc. in a multifunctional wheelchair.

In another embodiment, a pedal 10 for supporting the foot is provided at the tip of the base 1, which is advantageous for use by a user who has difficulty in defecation, such as an elderly person or a bedridden person, and has stress in defecation. To alleviate.

At the same time, the present application also discloses the following technical measures.

It is a labor-saving short-stroke link structure that can be used for raising and lowering articles such as tables and chairs, and is particularly suitable for product structures with a small space. Specifically, the labor-saving short-stroke link structure has a hinge between the upper connecting plate (bottom plate in the embodiments of FIGS. 1 to 9), the lower connecting plate, and the upper connecting plate and the lower connecting plate. Includes connected support structures. The support structure includes a front support rod assembly and a rear support rod assembly, further including a drive mechanism for rotationally driving the support structure. The drive mechanism generates a linear motion to bring the parallelogram mechanism formed of the upper connecting plate, the front support rod assembly, the lower connecting plate, and the rear support rod assembly into the deployed state or the retracted state. The front support rod assembly includes a left front support rod and a right front support rod, and the rear support rod assembly includes a left rear support rod and a right rear support rod. The drive mechanism is an electric telescopic rod. The fixed end of the electric telescopic rod is hinged to the lower connecting plate, and the movable end of the electric telescopic rod is fitted to the outer circumference of the push shaft via a connecting tool. One roller is provided at each end of the push shaft, and the roller is rolled in the roller grooves provided on the left front support rod and the right front support rod. The lower connecting plate is provided with an intermediate support rotating shaft whose both ends are hinged to the lower connecting plate. At the base end of the intermediate support rotation shaft, an intermediate support arm orthogonal to the axis is provided. An upper roller is provided at the tip of the intermediate support arm, and both ends of the push shaft are hinged in the middle of the intermediate support arm. When the outer peripheral surface of the roller comes into contact with the roller groove and the movable end of the electric telescopic rod protrudes during ascending, the roller rolls in the roller groove, and the upper connecting plate, the front support rod assembly, the lower connecting plate and the rear are connected. Stretch a parallelogram consisting of side support rod assemblies. When the adjustable elevating device is raised to a predetermined height (close to the maximum open state), the rollers are disengaged from the roller groove and no bearing force is generated, and the upper rollers at the tip of the intermediate support arm are on both sides of the roller groove. By contacting the edge, a bearing force is generated, the force arm at this time becomes large, and the reaction force received by the first electric push rod becomes small, so that the open state of the adjustable lifting device can be more stabilized. .. Such a support structure increases the initial force during the ascent of the adjustable lifting device, shortens the stroke of the electric push rod, which receives the least force in the maximum state, and ensures the structural stability of each member. It is advantageous for extending the service life. The upper roller preferably has a stepped structure in which the diameters at both ends are smaller than those in the middle portion.

The labor-saving short-stroke link structure of the present application can be applied to a multifunctional wheelchair as shown in the examples of FIGS. 1 to 9, and can also be applied to various wheelchair structures such as student seats and automobile seats.

The present application further discloses an interlocking link mechanism for seats. The seat includes a base, grab bars hinged to both sides of the base, pedals hinged to the front end of the base, and further includes a linear drive mechanism provided between the base and the grab bar. The fixed end of the linear drive mechanism is fixedly connected to the bracket of the base, and the movable end is hinged to the link under the handrail. The handrail lower link is fixedly connected to the grab bar via the handrail side connecting plate which is fixedly connected. When the grab bar is in the horizontal state, it is in the contracted state, and the movable end of the linear drive mechanism is in the extended state. In the operating state, the movable end of the linear drive mechanism contracts to rotate the handrail lower link, and at the same time the handrail lower link rotates, and at the same time, the grab bar rotates upward via the fixedly connected handrail side connecting plate. Let the grab bar be stretched and used to support the user's elbow.

Further, the pedal link is externally fitted in the middle of the handrail lower link, and one end of the pedal link is hinged to the lower handrail link and the other end is hinged to the lower center portion of the front pedal. In the operating state, the movable side of the linear drive mechanism contracts to rotate the handrail lower link, the handrail lower link rotates the pedal link along with the rotation, and the connected front pedal is rotated from the rear side to the front side. , Provided to relax the legs when the user sits down.

The interlocking link mechanism for seats of the present application can be applied to a multifunctional wheelchair as shown in the examples of FIGS. 1 to 9, and can also be applied to the structure of various chairs such as a folding chair and an automobile seat.

As described above, the multifunctional wheelchair of the present application can adjust the height and angle of the wheelchair body by adopting a structural form in which the base and the adjustable elevating device cooperate with each other, and has wider applicability. It has, is applied to beds of various heights, and meets various usage needs such as flat reclining, upright, moving, folding, etc. By adopting a slide removable structure, it is easy to separate the wheelchair body and the base, it is lighter, the physical burden on the caregiver and the patient's family is reduced, and when it is used less in the mobile work state, Multiple wheelchair bodies can share one base and reduce cost expenditure. The adjustable lifting device further includes a bottom plate centered on a defecation through hole, a front bezel to support the lower legs, a front grip for the user to approach and a neck pillow to support the head for comfort. And have higher safety. Since multiple types of power drive mechanisms can be used, the manufacturer has the flexibility to choose according to different costs and manufacturing priorities. The base is equipped with a stiffener to push the wheelchair, an armrest to support the user's elbow, an external table to put things on, and a pedal to support the foot, and it is fully functional and durable. be.

The above has further described the technical content of the present disclosure with examples for ease of understanding, but does not represent an embodiment of the present disclosure and is a technical extension or reconstruction made by the present disclosure. Both are protected by this disclosure. The scope of protection of the present application conforms to the scope of claims.

(Additional note)
(Appendix 1)
A multifunctional wheelchair including a wheeled base, further including an adjustable lifting device connected above the base, wherein the adjustable lifting device is a bottom plate, a backrest hinged to the rear end of the bottom plate. Includes a lower connecting plate connected to the base and a hinge-connected support structure between the bottom plate and the lower connecting plate, the support structure including a front support rod assembly, a rear support rod assembly and adjustable. The lifting device further includes a driving mechanism for rotational driving of the support structure and / or lifting driving of the bottom plate, and the driving mechanism is formed by a bottom plate, a front support rod assembly, a lower connecting plate, and a rear support rod assembly. A multifunctional wheelchair characterized by generating a rotational or linear motion to bring the parallel quadrilateral mechanism into a deployed or retracted state.

(Appendix 2)
The upper support plate of the base is provided with a slide groove, and below the lower connecting plate, a pulley that is slidably engaged with the slide groove is provided, so that the elevating device and the base can be adjusted. Form a slide removable connection between
Alternatively, the lower connecting plate is an upper support plate of the base and forms an integral structure.
Alternatively, the multifunctional wheelchair according to Appendix 1, wherein the lower connecting plate is fixedly connected to an upper support plate provided on the base.

(Appendix 3)
The adjustable lifting device further includes a front bezel hinged to the front end of the bottom plate, a front grip hinged to the center of the front end of the bottom plate, and a neck pillow provided at the outer end of the backrest. The front support rod assembly includes a left front support rod and a right front support rod, and the rear support rod assembly includes a left rear support rod and a right rear support rod. The multifunctional wheelchair described in 1.

(Appendix 4)
A defecation through hole is provided in the center of the bottom plate, and an elastic frame-shaped holder located below the defecation through hole is provided below the bottom plate to support the excrement container by elastic force. The multifunctional wheelchair according to Appendix 1, which is characterized in that it is used.

(Appendix 5)
The drive mechanism is a motor with a reduction mechanism, and the reduction mechanism is provided with an output shaft and is transmitted and connected to a rotation shaft of either a front support rod assembly or a rear support rod assembly.
Alternatively, the drive mechanism is a manual urging lever that generates rotational power, and a torque connecting portion is provided at the outer end of the swivel shaft of either the front support rod assembly or the rear support rod assembly. The manual urging lever is transmitted and connected to the torque connecting portion.
Alternatively, the drive mechanism is a linear motion mechanism provided between the lower connecting plate and the bottom plate, the front support rod assembly, or the rear support rod assembly, and the linear motion mechanism is an electric push rod or air. Cylinder, hydraulic cylinder, or ball screw transmission mechanism,
Alternatively, the drive mechanism is an air cell provided between the lower connecting plate and the bottom plate, and an air pump connected to the ventilation path of the air cell.
Alternatively, the drive mechanism is a magnetic mechanism provided between the lower connecting plate and the bottom plate, and the magnetic mechanism is fixed to the lower coil fixed to the upper surface of the lower connecting plate and the lower surface of the bottom plate. The upper coil, the upper coil, and the drive circuit electrically connected to the lower coil are included, and the upper coil and the lower coil generate a magnetic field of the same level and generate a repulsive force upward of the bottom plate. The multifunctional wheelchair according to any one of the appendices 1 to 4, characterized in that.

(Appendix 6)
The multifunctional wheelchair according to any one of Supplementary note 1 to 4, wherein a drip stand having a rod-shaped structure with an adjustable length in the axial direction is hinged to the left side and / or the right side of the base.

(Appendix 7)
A stiffener is connected to the base, and the stiffener has a portal frame structure and is connected to the left rear side, the right rear side of the base, the left side rod, the right side rod, and the left side rod and the rear end of the right side rod. When the backrest and the bottom plate are in a 180-degree unfolded state, the lateral push rod is locked in a lateral locking groove provided on the rear back surface of the backrest. The multifunctional wheelchair according to any one of 1 to 4.

(Appendix 8)
The multifunctional wheelchair according to any one of Supplementary note 1 to 4, wherein right-angled armrests are hinged to both sides of the base, and the right-angled armrests are retracted when the right-angled armrests are rotated 90 degrees forward. ..

(Appendix 9)
The multifunctional wheelchair according to Appendix 8, wherein each of the tops of the adjustable armrests is provided with an outlet for an external table.

(Appendix 10)
The multifunctional wheelchair according to Appendix 1, wherein a pedal is provided at the front end of the base.

1 ... Base, 10 ... Pedal, 11 ... Drip stand, 12 ... Stopper, 13 ... Slide groove, 14 ... Damper, 15 ... Lock stopper, 16 ... Grab bar, 17 ... Wheel, 18 ... Self-lock spring, 19 ... Unlock bracket , 111 ... 1st electric push rod, 112 ... 2nd electric push rod, 113 ... 3rd electric push rod, 114 ... strut, 115 ... handrail side connecting plate, 116 ... pedal link, 117 ... handrail lower link, 2 ... adjustment Possible lifting devices, 21 ... front bezel, 22 ... front grip, 23 ... neck pillow, 3 ... bottom plate, 31 ... through hole for defecation, 4 ... backrest, 5 ... lower connecting plate, 51 ... upper roller, 52 ... roller , 53 ... Intermediate support arm, 54 ... Intermediate support rotation shaft, 55 ... Roller groove, 56 ... Connector, 57 ... Front lower support shaft, 58 ... Push shaft, 59 ... Front upper support shaft, 6 ... Support structure, 61 ... Front support rod assembly, 62 ... Rear support rod assembly, 63 ... Rear lower support shaft, 64 ... Rear upper support shaft, 7 ... Stiffener, 71 ... Left side rod, 72 ... Side push rod, 8 ... Right angle type armrest, 9 ... External table.

Claims (10)

A multifunctional wheelchair including a wheeled base, further including an adjustable lifting device connected above the base, wherein the adjustable lifting device is a bottom plate, a backrest hinged to the rear end of the bottom plate. Includes a lower connecting plate connected to the base and a hinge-connected support structure between the bottom plate and the lower connecting plate, the support structure including a front support rod assembly, a rear support rod assembly and adjustable. The lifting device further includes a driving mechanism for rotational driving of the support structure and / or lifting driving of the bottom plate, and the driving mechanism is formed by a bottom plate, a front support rod assembly, a lower connecting plate, and a rear support rod assembly. A multifunctional wheelchair characterized by generating a rotational or linear motion to bring the parallel quadrilateral mechanism into a deployed or retracted state. The upper support plate of the base is provided with a slide groove, and below the lower connecting plate, a pulley that is slidably engaged with the slide groove is provided, so that the elevating device and the base can be adjusted. Form a slide removable connection between
Alternatively, the lower connecting plate is an upper support plate of the base and forms an integral structure.
Alternatively, the multifunctional wheelchair according to claim 1, wherein the lower connecting plate is fixedly connected to an upper support plate provided on the base. The adjustable lifting device further includes a front bezel hinged to the front end of the bottom plate, a front grip hinged to the center of the front end of the bottom plate, and a neck pillow provided at the outer end of the backrest. The front support rod assembly includes a left front support rod and a right front support rod, and the rear support rod assembly includes a left rear support rod and a right rear support rod. Item 1. The multifunctional wheelchair according to item 1. A defecation through hole is provided in the center of the bottom plate, and an elastic frame-shaped holder located below the defecation through hole is provided below the bottom plate to support the excrement container by elastic force. The multifunctional wheelchair according to claim 1, wherein the wheelchair is provided. The drive mechanism is a motor with a reduction mechanism, and the reduction mechanism is provided with an output shaft and is transmitted and connected to a rotation shaft of either a front support rod assembly or a rear support rod assembly.
Alternatively, the drive mechanism is a manual urging lever that generates rotational power, and a torque connecting portion is provided at the outer end of the swivel shaft of either the front support rod assembly or the rear support rod assembly. The manual urging lever is transmitted and connected to the torque connecting portion.
Alternatively, the drive mechanism is a linear motion mechanism provided between the lower connecting plate and the bottom plate, the front support rod assembly, or the rear support rod assembly, and the linear motion mechanism is an electric push rod or air. Cylinder, hydraulic cylinder, or ball screw transmission mechanism,
Alternatively, the drive mechanism is an air cell provided between the lower connecting plate and the bottom plate, and an air pump connected to the ventilation path of the air cell.
Alternatively, the drive mechanism is a magnetic mechanism provided between the lower connecting plate and the bottom plate, and the magnetic mechanism is fixed to the lower coil fixed to the upper surface of the lower connecting plate and the lower surface of the bottom plate. The upper coil, the upper coil, and the drive circuit electrically connected to the lower coil are included, and the upper coil and the lower coil generate a magnetic field of the same level and generate a repulsive force upward of the bottom plate. The multifunctional wheelchair according to any one of claims 1 to 4, characterized in that. The multifunctional wheelchair according to any one of claims 1 to 4, wherein a drip stand having a rod-shaped structure with an adjustable axial length is hinged to the left side and / or the right side of the base. A stiffener is connected to the base, and the stiffener has a portal frame structure and is connected to the left rear side, the right rear side of the base, the left side rod, the right side rod, and the left side rod and the rear end of the right side rod. The claim is characterized in that when the backrest and the bottom plate are in a 180-degree unfolded state, the lateral push rod is locked in a lateral locking groove provided on the rear back surface of the backrest. The multifunctional wheelchair according to any one of items 1 to 4. The multifunction according to any one of claims 1 to 4, wherein right-angled armrests are hinged to both sides of the base, and the right-angled armrests are retracted when the right-angled armrests are rotated 90 degrees forward. wheelchair. The multifunctional wheelchair according to claim 8, wherein each of the tops of the adjustable armrests is provided with an outlet for an external table. The multifunctional wheelchair according to claim 1, wherein a pedal is provided at the front end of the base.

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