CN210698029U

CN210698029U - Multifunctional wheelchair and wheelchair bed

Info

Publication number: CN210698029U
Application number: CN201920581619.4U
Authority: CN
Inventors: 楊国强; 李东坡; 冯亚磊; 李舟健; 黄仲羽
Original assignee: Guangdong Bozhilin Intelligent Technology Co ltd
Current assignee: Guangdong Bozhilin Intelligent Technology Co ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-06-09
Anticipated expiration: 2029-04-26

Abstract

The utility model relates to a multifunctional wheelchair and wheelchair bed. Wherein, this multi-functional wheelchair includes: the bottom of the seat part supporting frame is provided with a travelling mechanism; one end of the shank plate support frame is rotatably connected with the seat part support frame; the first driving mechanism drives the lower leg plate supporting frame to rotate relative to the seat supporting frame; and the linkage mechanism comprises a lifting connecting rod and a sliding connection seat, the sliding connection seat is provided with a strip-shaped groove, one end of the lifting connecting rod is hinged to the lower leg plate support frame, the middle part of the lifting connecting rod is hinged to the seat part support frame, the other end of the lifting connecting rod is connected to the strip-shaped groove in a sliding mode, one end, far away from the lifting connecting rod, of the sliding connection seat is hinged to the seat part support frame, the top of the sliding connection seat can be used for supporting the lower leg plate, the sliding connection seat can descend along with the lifting of the lower leg plate support frame, and the sliding connection. The utility model discloses a multi-functional wheelchair can realize the coordinated control of shank board and thigh board, still can realize the deformation of the multiple posture that accords with ergonomic characteristic simultaneously.

Description

Multifunctional wheelchair and wheelchair bed

Technical Field

The utility model relates to the field of medical care equipment, especially relate to a multifunctional wheelchair and wheelchair bed.

Background

The multifunctional wheelchair bed is an integrated nursing bed which can be operated by a passenger or a caregiver and consists of independent wheel type components with detachable, transformable and movable functions and a main bed frame. The wheelchair bed integrated design mainly solves the moving problem of a person who is inconvenient to move, reduces the risk of falling down caused by manual carrying or autonomous getting off from a bed in the transfer process from the bed to the wheelchair before going to the toilet and going out, and simultaneously avoids the skin damage caused by the friction between a human body and an appliance in the moving process. On the basis of the bed chair deformation function, around the clinical rehabilitation nursing requirements of patients with half disability and disability, the automatic bed chair deformation, wheelchair motion control, back lifting, leg lifting and safety protection supporting functions are designed, so that the support is provided for reducing the labor intensity of nursing personnel, increasing the comfort of the nursing personnel and ensuring the safety of the nursing process.

The deformable multifunctional wheelchair is a core part of the wheelchair bed, and the lifting/falling of the legs is a basic function of the wheelchair and the wheelchair bed product. Conventional wheelchairs assist in achieving multiple stance motions of the lower extremities by designing the thigh panels, the shank panels and the pedals in a segmented fashion. Related products mostly adopt a single driving motor to correspondingly drive each supporting frame plate to lift/fall so as to realize independent control, but the use of multiple driving motors increases the complexity of control and the research and development cost of products on one hand, and on the other hand, the use of multiple motors also influences the electromagnetic compatibility of the products. In addition, some products adopt plate linkage control, but the problem of mutual interference among functions caused by the plate linkage control is that especially when the horizontal state is changed into the knee bending horizontal state and the horizontal state is changed into the sitting posture state, the existing linkage control design of the thigh plate and the lower leg plate conflicts with the action requirement, the ergonomic characteristics can not be well met under various postures, and the use comfort of a user is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a multifunctional wheelchair and a wheelchair bed, which can solve the problem that the leg linkage control design and the action requirement of the conventional multifunctional wheelchair conflict with each other and the ergonomic characteristics can not be well met in various postures.

A multi-function wheelchair comprising:

a seat support frame;

one end of the shank plate support frame is rotatably connected with the seat part support frame;

the first driving mechanism drives the lower leg plate supporting frame to rotate relative to the seat supporting frame; and

linkage mechanism, including lifting connecting rod and sliding connection seat, sliding connection seat is equipped with the bar groove, the one end of lifting connecting rod with the shank board support frame is articulated, the middle part of lifting connecting rod with the seat support frame is articulated, the other end slidable of lifting connecting rod connect in the bar inslot, sliding connection seat is kept away from the one end of lifting connecting rod with the seat support frame is articulated, sliding connection seat's top can be used for supporting the shank board, sliding connection seat can follow the lifting of shank board support frame descends, and follows the descending and the lifting of shank board support frame.

According to the multifunctional wheelchair, the linkage matching of the first driving mechanism, the lower leg plate support frame and the linkage mechanism can realize linkage control of the lower leg plate and the upper leg plate, and meanwhile, deformation of various postures can be realized. Specifically, a shank plate is mounted at the top of a shank plate support frame, a thigh plate is mounted at the top of a sliding connection seat, when the sitting posture state is required to be converted into the lying state, the shank plate support frame is driven to rotate upwards and lift through a first driving mechanism, then a lifting connecting rod is driven to rotate around a seat support frame, the sliding end of the lifting connecting rod slides along a strip-shaped groove, the sliding connection seat can be driven to rotate downwards and descend around the seat support frame, at the moment, the shank plate and the thigh plate are substantially on the same plane, the ergonomic characteristic of the lying state is met, and legs of a human body can be unfolded; when needs convert the position of sitting from the state of lying to, drive shank board support frame through a actuating mechanism and rotate the descending downwards, and then drive lifting connecting rod antiport, the slip end of lifting connecting rod slides along bar groove antiport, can drive the butt seat and upwards lift, and the thigh board is close to one side tilt up a little that shank board was close to this moment, accords with the ergonomic characteristic of position of sitting state, can effectively promote user's comfort level in utilization.

In one embodiment, the seat support frame is provided with an accommodating space, and when the lower leg plate support frame is lifted upwards to a certain angle above the horizontal plane, the end part of the lifting connecting rod and the sliding seat are accommodated in the accommodating space.

In one embodiment, the sliding seat includes two side supporting plates disposed opposite to each other at an interval, and a top supporting plate disposed on top of the two side supporting plates, the two side supporting plates are correspondingly provided with the strip-shaped groove, two opposite sides of the lifting link are respectively provided with a sliding portion slidably engaged with the strip-shaped groove, and the thigh plate is connected to the top supporting plate.

In one embodiment, the end of the lifting link is provided with a shaft hole for a sliding shaft to pass through, and two ends of the sliding shaft protrude out of the lifting link to form the sliding part.

In one embodiment, the lower end of the lower leg plate support frame is rotatably connected with a foot support frame, the first driving mechanism comprises a first driving part and a transmission support frame, the transmission support frame is located below the lower leg plate support frame, the upper end of the transmission support frame is hinged with the seat support frame, the lower end of the transmission support frame is hinged with the foot support frame, a parallelogram linkage mechanism is formed among the seat support frame, the transmission support frame, the foot support frame and the lower leg plate support frame, and the first driving part is used for driving the transmission support frame to rotate.

In one embodiment, the transmission support frame comprises two side support rods which are oppositely arranged, and a transverse support rod connected between the two side support rods, the lower ends of the side support rods are hinged with the foot support frame, the upper ends of the side support rods are hinged with the seat support frame, and a connecting seat used for being connected with the driving end of the first driving piece is arranged in the middle of the transverse support rod.

In one embodiment, the foot support frame comprises a foot support frame, a support column and two connecting arms, two opposite sides of the foot support frame are respectively hinged to the lower leg plate support frame, the support column is arranged at the bottom of the foot support frame, the two connecting arms are arranged in an inclined manner, one end of each connecting arm is fixedly connected with the foot support frame, and the other end of each connecting arm is hinged to the corresponding side supporting rod.

In one embodiment, the seat supporting frame comprises a seat supporting frame and two side supporting frames arranged on two opposite sides of the bottom of the seat supporting frame, a cross beam is connected between the two side supporting frames, the first driving part is a push rod motor, the mounting end of the push rod motor is connected to the cross beam, and the telescopic end of the push rod motor extends upwards in an inclined manner and is connected with the transmission supporting frame.

In one embodiment, the multifunctional wheelchair further comprises a back support frame and a second driving mechanism, wherein the lower end of the back support frame is rotatably connected with the seat support frame, and the second driving mechanism is used for driving the back support frame to rotate relative to the seat support frame.

A wheelchair bed comprises a bed frame and the multifunctional wheelchair, wherein the multifunctional wheelchair is detachably connected with the bed frame.

Drawings

Fig. 1 is a schematic structural view of a first state of a multifunctional wheelchair according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of the multi-function wheelchair of FIG. 1 in a second configuration;

FIG. 4 is a schematic structural view of the multi-function wheelchair of FIG. 1 in a third configuration;

FIG. 5 is a schematic view of the engagement of the thigh plate and the lower leg plate of the wheelchair in a third condition;

fig. 6 is a schematic structural view of a wheelchair bed according to an embodiment of the present invention.

10. A wheelchair, 11, a seat support frame, 110, an accommodation space, 111, a seat support frame, 112, a side support frame, 113, a beam, 114, a seat plate, 115, an armrest, 12, a walking mechanism, 13, a lower leg plate support frame, 131, a lower leg plate, 14, a first driving mechanism, 141, a first driving member, 142, a transmission support frame, 1421, a side support rod, 1422, a transverse support rod, 15, a linkage mechanism, 151, a lifting link, 152, a sliding seat, 1521, a strip-shaped groove, 1522, a side support plate, 1523, a top support plate, 153, a upper leg plate, 16, a foot support frame, 160, a pedal, 161, a foot support frame, 162, a support column, 163, a connecting arm, 17, a back support frame, 171, a guide, 18, a second driving mechanism, 181, a back pushing rod, 182, a rotating shaft, 183, a sliding shaft, 184, a second driving member, 21, a bed frame, 22, a back frame, 23, a third driving mechanism, 24. base, 25, elevating system, 251, crossing link assembly, 252, lift driving piece.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only. In the present invention, the terms "first", "second" and "third" do not denote any particular quantity or order, but are merely used to distinguish names.

For convenience of description, the terms "up" and "down" are used herein with reference to the wheelchair 10 in a sitting position, and as shown in fig. 1, a multi-function wheelchair 10 includes a seat support frame 11, a lower leg plate support frame 13, a first drive mechanism 14, and a linkage mechanism 15. The upper end of the lower leg plate support frame 13 is rotatably connected with the seat part support frame 11; the first driving mechanism 14 is used for driving the lower leg plate support frame 13 to rotate relative to the seat support frame 11; referring to fig. 2, the linkage mechanism 15 includes a lifting link 151 and a sliding seat 152, the sliding seat 152 is provided with a strip-shaped groove 1521, the lower end of the lifting link 151 is hinged to the calf plate support frame 13, the middle of the lifting link 151 is hinged to the seat support frame 11, the upper end of the lifting link 151 is slidably connected to the strip-shaped groove 1521, one end of the sliding seat 152, which is far away from the lifting link 151, is hinged to the seat support frame 11, the top of the sliding seat 152 can be used for supporting the calf plate 153, and the sliding seat 152 can descend along with the lifting of the calf plate support frame 13 and ascend along with the descending of the calf plate support frame 13.

Specifically, as shown in fig. 5, the seat support frame 11 is used to form a main body support structure, a seat plate 114 may be installed on the top of the seat support frame 11 to support the buttocks of a human body, a liftable armrest 115 may be disposed on the side of the seat support frame 11, and a traveling mechanism 12 (such as a caster assembly or a track wheel) may be disposed on the bottom of the seat support frame 11 to facilitate the movement of the wheelchair 10. . The top of the shank plate support frame 13 can be provided with a shank plate 131 for supporting the shank of the human body; a thigh plate 153 may be mounted on the top of the slip seat 152 for supporting the thigh of the human body. Preferably, the controller is arranged on the handrail 115, the controller is electrically connected with the first driving mechanism 14, the first driving mechanism 14 drives the lower leg plate support frame 13 to rotate under the control of the controller, so as to realize the lifting or descending of the lower leg plate 131, the lower leg plate support frame 13 drives the linkage mechanism 15 to move, thereby realizing the descending or lifting of the upper leg plate 153, the operation is simple and convenient, the linkage control of the lower leg plate 131 and the upper leg plate 153 can be realized only by one set of driving device, the interference problem caused by the use of multiple sets of driving devices can be avoided, and meanwhile, the cost can be effectively reduced.

The multifunction wheelchair 10 can realize the interlocking control of the lower leg plate 131 and the upper leg plate 153 and also realize the deformation of various postures by the interlocking engagement of the first drive mechanism 14, the lower leg plate support frame 13, and the interlocking mechanism 15. Specifically, the top of the lower leg plate support frame 13 is provided with a lower leg plate 131, the top of the sliding seat 152 is provided with a upper leg plate 153, when the sitting posture state needs to be converted into the lying state, the first driving mechanism 14 drives the lower leg plate support frame 13 to rotate upwards and lift, and further drives the lifting connecting rod 151 to rotate around the seat support frame 11, the lower end of the lifting connecting rod 151 lifts upwards, the upper end of the lifting connecting rod 151 falls and slides along the strip-shaped groove 1521, and further drives the sliding seat 152 to rotate downwards and fall around the seat support frame 11, at the moment, the lower leg plate 131 and the upper leg plate 153 are substantially in the same plane, the ergonomic characteristics of the lying state are met, and the legs of a human body can be unfolded; when the user needs to change from the lying state to the sitting state, the first driving mechanism 14 drives the lower leg plate support frame 13 to rotate downwards and descend, so as to drive the lifting connecting rod 151 to rotate reversely, the sliding end of the lifting connecting rod 151 slides reversely along the strip-shaped groove 1521, so as to drive the sliding connection seat 152 to lift upwards, at the moment, one side of the upper leg plate 153 close to the lower leg plate 131 inclines upwards slightly, the ergonomic characteristic of the sitting state is met, and the use comfort of the user can be effectively improved.

In one embodiment, referring to fig. 4, the seat support frame 11 is provided with an accommodating space 110, and when the lower leg plate support frame 13 is lifted upwards to a certain angle above the horizontal plane, the end of the lifting link 151 and the sliding seat 152 are both accommodated in the accommodating space 110. Specifically, the linkage mechanism 15 may be provided as one set or a plurality of sets as long as the thigh plate 153 can be driven to lift and lower. For example, in the present embodiment, the linkage 15 is provided as a set and located in the middle of the lower leg plate support frame 13 and the seat support frame 11 to ensure that a more uniform support force can be provided. The hinged position of the seat support frame 11 and the lifting connecting rod 151 is provided with an avoiding notch to ensure that the lifting connecting rod 151 does not interfere with the seat support frame 11 in the rotating process, a containing cavity is arranged at the position of the seat support frame 11 corresponding to the sliding connection seat 152, and the containing cavity is communicated with the avoiding notch to form a containing space 110.

When a user needs to change from lying to bending knees in a supine manner, the user only needs to drive the lower leg plate support frame 13 through the first driving piece 141 to lift upwards and be higher than the water level for a certain angle, the sliding end of the lifting connecting rod 151 slides along the strip-shaped groove 1521, and pushes the sliding connection seat 152 to move downwards to be lower than the top surface of the seat support frame 11 and fall into the accommodating space 110, at the moment, the front side of the lower leg plate 131 is in an upwards inclined state, and the upper leg plate 153 is kept in a horizontal state (as shown in fig. 5) due to the support of the seat support frame 11, so that the deformation from the lying state to the supine bending knee is realized, and the ergonomic characteristics in the supine.

Referring to fig. 2 again, further, the sliding seat 152 includes two side supporting plates 1522 disposed opposite to each other at intervals, and a top supporting plate 1523 disposed on the top of the two side supporting plates 1522, the two side supporting plates 1522 are correspondingly provided with strip grooves 1521, the two opposite sides of the lifting link 151 are respectively provided with sliding portions slidably engaged with the strip grooves 1521, and the thigh plate 153 is connected to the top supporting plate 1523. Through two sliding parts respectively with two bar grooves 1521 sliding fit for the cooperation between lifting connecting rod 151 and the sliding connection seat 152 is more reliable, thereby makes the lifting of top backup pad 1523 and thigh board 153 more stable.

Further, the end of the lifting link 151 is provided with a shaft hole through which a sliding shaft (not shown) is inserted, and both ends of the sliding shaft protrude from the lifting link 151 to form a sliding portion. Through the tip at lifting connecting rod 151 be provided with the shaft hole, when the assembly, arrange the tip of lifting connecting rod 151 in between two collateral branch backup pads 1522 earlier, pass the shaft hole with the sliding shaft again, and can make the tip and the bar groove 1521 sliding connection of sliding shaft, simple structure, the assembly of being convenient for. Preferably, a rolling bearing may be further provided at an end of the sliding shaft to make the sliding of the sliding shaft smoother.

Further, referring to fig. 1 and 4, the lower end of the lower leg plate support frame 13 is rotatably connected to the foot support frame 16, the first driving mechanism 14 includes a first driving member 141 and a transmission support frame 142, the transmission support frame 142 is located below the lower leg plate support frame 13, the upper end of the transmission support frame 142 is hinged to the seat support frame 11, the lower end of the transmission support frame 142 is hinged to the foot support frame 16, a parallelogram link mechanism is formed among the seat support frame 11, the transmission support frame 142, the foot support frame 16 and the lower leg plate support frame 13, and the first driving member 141 is used for driving the transmission support frame 142 to rotate. The foot support 16 may be provided with a pedal 160 for supporting the foot of the human body. The first driving member 141 drives the transmission support 142 to rotate, so as to realize the movement of the foot support 16, the lower leg plate support 13 and the linkage mechanism 15, and realize the conversion of the wheelchair 10 between the sitting posture, the lying posture, the supine knee bending state and the like.

Further, referring to fig. 4, the transmission support frame 142 includes two side support bars 1421 disposed oppositely and a transverse support bar 1422 connected between the two side support bars 1421, the lower end of the side support bar 1421 is hinged to the foot support frame 16, the upper end of the side support bar 1421 is hinged to the seat support frame 11, and the middle of the transverse support bar 1422 is provided with a connecting seat for connecting with the driving end of the first driving member 141. Connect two side bracing pieces 1421 in an organic whole through horizontal bracing piece 1422 for the overall structure intensity of transmission support frame 142 is higher, with the stronger support stability of assurance, wherein, horizontal bracing piece 1422 can set up to one or more. The driving end of the first driving member 141 is connected to the connecting seat located in the middle of the transverse supporting bar 1422, so as to ensure the movement stability of the transmission supporting frame 142.

Further, the foot supporting frame 16 includes a foot supporting frame 161, a supporting column 162 and two connecting arms 163, two opposite sides of the foot supporting frame 161 are hinged to the lower leg plate supporting frame 13, the supporting column 162 is disposed at the bottom of the foot supporting frame 161, the two connecting arms 163 are disposed in an inclined manner, one end of each connecting arm 163 is fixedly connected to the foot supporting frame 161, and the other end of each connecting arm is hinged to the side supporting rod 1421. When the wheelchair 10 is in a sitting posture state, the foot support frame 161 is easy to be mechanically deformed due to the treading force of the feet of the human body, and the bottom of the support column 162 can be abutted to the ground by arranging the support column 162, so that the foot support frame 161 can be well supported, the risk of deformation and damage of the foot support frame 161 due to long-term treading is reduced, and the service life is prolonged.

With reference to fig. 4, the seat supporting frame 11 further includes a seat supporting frame 111 and two side supporting frames 112 disposed at two opposite sides of the bottom of the seat supporting frame 111, a cross beam 113 is connected between the two side supporting frames 112, the first driving member 141 is a push rod motor, an installation end of the push rod motor is connected to the cross beam 113, and a telescopic end of the push rod motor extends upward and slantingly to be connected to the transmission supporting frame 142.

Specifically, when the telescopic end of the push rod motor is pushed out obliquely upward, the transmission support frame 142, the foot support frame 16 and the seat support frame 11 can be driven to lift upward together, so as to drive the lower end of the lifting connecting rod 151 to lift synchronously, and the upper end of the lifting connecting rod 151 pushes the sliding seat 152 to fall; when the telescopic end of the push rod motor is retracted obliquely downward, the transmission support 142, the foot support 16, and the seat support 11 are driven to fall together, so as to drive the lower end of the lifting link 151 to fall synchronously, and the upper end of the lifting link 151 drives the sliding seat 152 to lift. The push rod motor is adopted for driving, the structure is simple, the matching is reliable, certainly, the first driving part 141 can also adopt other driving structures, for example, a stepping motor and a spiral transmission mechanism can be adopted for matching, as long as the rotation of the transmission supporting frame 142 can be realized, and the specific limitation is not made herein.

Further, referring to fig. 1, the multifunctional wheelchair 10 further includes a back support frame 17 and a second driving mechanism 18, wherein the lower end of the back support frame 17 is rotatably connected to the seat support frame 11, and the second driving mechanism 18 is used for driving the back support frame 17 to rotate relative to the seat support frame 11. The top of the back support frame 17 can be provided with a back plate, and the angle of the back support frame 17 can be adjusted through the second driving mechanism 18 to meet different use requirements. For example, when the user wants to lie flat for rest, the back support 17 can be driven by the second driving mechanism 18 to rotate to a horizontal state, and at this time, the lower leg plate 131, the upper leg plate 153, the seat plate 114 and the back plate are substantially in the same plane, so that the user can lie flat; when the user wants to sit up or go out, the back support frame 17 can be lifted upwards by the second driving mechanism 18, and the first driving mechanism 14 drives the lower leg plate support frame 13 and the linkage mechanism 15 to move, so that the wheelchair 10 is deformed into the seat state.

As shown in fig. 3, in one embodiment, the second driving mechanism 18 includes a back pushing rod 181, a rotating shaft 182, a sliding shaft 183, and a second driving member 184, the rotating shaft 182 is installed on the seat supporting frame 11, one end of the back pushing rod 181 is rotatably connected to the middle of the rotating shaft 182, the other end of the back pushing rod 181 is connected to the middle of the sliding shaft 183, two opposite sides of the back supporting frame 17 are respectively provided with a guiding member 171 slidably engaged with two ends of the sliding shaft 183, and the driving member is configured to drive the back pushing rod 181 to rotate so as to drive the sliding shaft 183 to slide along the guiding member 171, thereby driving the back supporting frame 17 to rotate. Specifically, in the lifting process, the back pushing rod 181 rotates to drive the sliding shaft 183 to slide along the guide part 171, the sliding shaft 183 can apply force to two sides of the back support frame 17 simultaneously when sliding along the guide part 171, so that the two sides of the back support frame 17 are stressed in balance in the lifting process, and thus when the bearing force of the back support frame 17 is increased or the force is applied to the two sides of the back support frame 17 in a deviated mode, stable support can still be kept, stability and safety of the back lifting process of the wheelchair 10 are guaranteed, and meanwhile, the risk that the second driving part 184 and the back support frame 17 are damaged due to mechanical deformation can be effectively reduced. The second driver 184 may employ, but is not limited to, a push rod motor.

Referring to fig. 6, the present invention further provides a wheelchair bed, which includes a frame and a wheelchair 10, wherein the wheelchair 10 is detachably connected to the frame. The specific structure of the multifunctional wheelchair 10 can refer to the above embodiments, and the wheelchair bed adopts all technical solutions of the above embodiments, so that the wheelchair bed at least has all the beneficial effects brought by the above embodiments, and further description is omitted here.

Further, as shown in fig. 6, the bed frame includes a bed frame 21, a back frame 22 and a third driving mechanism 23, one end of the back frame 22 is rotatably connected to the bed frame 21, when the wheelchair 10 is assembled with the bed frame, the back support frame 17 is lapped on the back frame 22, and the third driving mechanism 23 is used for driving the back frame 22 to drive the back frame 22 and the back support frame 17 to be lifted and lowered synchronously, so that the integral back lifting and lowering function of the wheelchair bed can be realized.

Further, in order to adjust the height of the wheelchair bed, the bed frame further comprises a base 24 and a lifting mechanism 25, the bed body frame 21 is mounted on the base 24 through the lifting mechanism 25, and the lifting mechanism 25 can drive the bed body frame 21 to lift in the vertical direction. For example, the lifting mechanism 25 may include a cross link assembly 251 and a lifting driving member 252, a lower end of the cross link assembly 251 is hinged to the base 24, an upper end of the cross link assembly 251 is hinged to the bed frame 21, and the lifting driving member 252 is configured to drive the cross link assembly 251 to move so as to drive the bed frame 21 to lift. The lifting driving member 252 may be, but not limited to, a push rod motor or a motor and reducer matching structure.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A multi-function wheelchair, comprising:

a seat support frame;

2. The multifunctional wheelchair as claimed in claim 1, wherein the seat support frame has a receiving space, and when the lower leg plate support frame is raised upward to a certain angle above the horizontal plane, the ends of the lifting link and the sliding seat are received in the receiving space.

3. The multifunctional wheelchair as claimed in claim 1, wherein the sliding seat comprises two side supporting plates disposed oppositely and at an interval, and a top supporting plate disposed on top of the two side supporting plates, the two side supporting plates are correspondingly provided with the strip-shaped grooves, the two opposite sides of the lifting link are respectively provided with sliding portions slidably engaged with the strip-shaped grooves, and the thigh plate is connected to the top supporting plate.

4. The multi-function wheelchair as claimed in claim 3, wherein the lifting link has a shaft hole at an end thereof through which a sliding shaft is inserted, and both ends of the sliding shaft protrude from the lifting link to form the sliding portion.

5. The multifunctional wheelchair as claimed in claim 1, wherein the lower end of the lower leg plate support is rotatably connected with a foot support, the first driving mechanism comprises a first driving member and a transmission support, the transmission support is located below the lower leg plate support, the upper end of the transmission support is hinged with the seat support, the lower end of the transmission support is hinged with the foot support, a parallelogram linkage is formed among the seat support, the transmission support, the foot support and the lower leg plate support, and the first driving member is used for driving the transmission support to rotate.

6. The multifunctional wheelchair as claimed in claim 5, wherein the transmission support comprises two side support rods arranged oppositely, and a transverse support rod connected between the two side support rods, the lower ends of the side support rods are hinged with the foot support frame, the upper ends of the side support rods are hinged with the seat support frame, and the middle part of the transverse support rod is provided with a connecting seat for connecting with the driving end of the first driving member.

7. The multifunctional wheelchair as claimed in claim 6, wherein the foot support comprises a foot support frame, a support column and two connecting arms, opposite sides of the foot support frame are respectively hinged to the lower leg plate support frame, the support column is arranged at the bottom of the foot support frame, the two connecting arms are arranged in an inclined manner, one end of each connecting arm is fixedly connected with the foot support frame, and the other end of each connecting arm is hinged to the side support rod.

8. The multifunctional wheelchair as claimed in claim 6, wherein the seat supporting frame comprises a seat supporting frame and two side supporting frames disposed at opposite sides of the bottom of the seat supporting frame, a cross beam is connected between the two side supporting frames, the first driving member is a push rod motor, the mounting end of the push rod motor is connected to the cross beam, and the telescopic end of the push rod motor extends obliquely upward and is connected to the transmission supporting frame.

9. The multi-function wheelchair of any one of claims 1 to 8 further comprising a back support frame rotatably connected at a lower end thereof to the seat support frame, and a second drive mechanism for driving the back support frame to rotate relative to the seat support frame.

10. A wheelchair bed comprising a frame and a multi-function wheelchair as claimed in any one of claims 1 to 9, the multi-function wheelchair being detachably connected to the frame.