CN109907893B - Multifunctional wheelchair and wheelchair bed - Google Patents
Multifunctional wheelchair and wheelchair bed Download PDFInfo
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- CN109907893B CN109907893B CN201910342051.5A CN201910342051A CN109907893B CN 109907893 B CN109907893 B CN 109907893B CN 201910342051 A CN201910342051 A CN 201910342051A CN 109907893 B CN109907893 B CN 109907893B
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- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 210000000689 upper leg Anatomy 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 244000309466 calf Species 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000036544 posture Effects 0.000 abstract description 14
- 230000033001 locomotion Effects 0.000 description 6
- 210000003127 knee Anatomy 0.000 description 5
- 210000002414 leg Anatomy 0.000 description 5
- 230000000474 nursing effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001144 postural effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000037380 skin damage Effects 0.000 description 1
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Abstract
The invention relates to a multifunctional wheelchair and a wheelchair bed. Wherein, this multi-functional wheelchair includes: a seat support frame, the bottom of which is provided with a travelling mechanism; one end of the shank board support frame is rotatably connected with the seat support frame; the first driving mechanism drives the shank board support frame to rotate relative to the seat support frame; and the linkage mechanism comprises a lifting connecting rod and a sliding seat, wherein the sliding seat is provided with a bar-shaped groove, one end of the lifting connecting rod is hinged with the shank plate support frame, the middle part of the lifting connecting rod is hinged with the seat support frame, the other end of the lifting connecting rod is slidably connected in the bar-shaped groove, one end of the sliding seat, which is far away from the lifting connecting rod, is hinged with the seat support frame, the top of the sliding seat can be used for supporting a thigh plate, and the sliding seat can descend along with the lifting of the shank plate support frame and ascends along with the descending of the shank plate support frame. The multifunctional wheelchair can realize the linkage control of the lower leg plate and the thigh plate and can also realize the deformation of various postures conforming to the ergonomic characteristics.
Description
Technical Field
The invention relates to the field of medical care equipment, in particular to a multifunctional wheelchair and a wheelchair bed.
Background
The multifunctional wheelchair bed is an integrated nursing bed which can be operated by an occupant or a caretaker and is composed of an independent wheel type component with detachable, deforming and moving functions and a main body bed frame. The wheelchair bed integrated design mainly solves the moving problem of the person with inconvenient movement, reduces the falling risk generated by manual lifting or autonomous getting off the bed in the transferring process from the bed to the wheelchair before the person uses the toilet and goes out, and simultaneously avoids skin damage caused by friction between a human body and an appliance in the moving process. On the basis of the deformation function of the bed and chair, the automatic deformation, wheelchair motion control, back lifting, leg lifting and safety protection support functions of the bed and chair are designed around the clinical rehabilitation nursing demands of patients with disability and disability, so that support is provided for relieving the labor intensity of nursing staff, improving the comfort of the nursing staff and ensuring the safety of the nursing process.
The deformable multifunctional wheelchair is a core component of the wheelchair bed, and leg lifting/falling is a basic function of the wheelchair and wheelchair bed products. The conventional wheelchair is designed to assist in achieving multiple postural movements of the lower limbs by sectioning the thigh plate, the shank plate and the pedals. The related products adopt 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 the products on one hand, and on the other hand, the use of multiple motors also affects the electromagnetic compatibility of the products. In addition, part of products adopt plate linkage control, but the problem of mutual interference among functions caused by the plate linkage control is especially caused when the plate is converted from a lying state to a knee bending lying state and from the lying state to a sitting state, the prior thigh plate and the calf plate have conflict with the linkage control design and action requirements, and the human engineering characteristics can not be well met under various different postures, so that the use comfort of a user is influenced.
Disclosure of Invention
Based on the above, it is necessary to provide a multifunctional wheelchair and a wheelchair bed, which solve the problem that the design of leg linkage control and the action requirements of the traditional multifunctional wheelchair are conflicting and the ergonomic characteristics cannot be well met under various different postures.
A multi-function wheelchair comprising:
a seat support frame, the bottom of which is provided with a travelling mechanism;
One end of the shank board support frame is rotatably connected with the seat support frame;
The first driving mechanism drives the shank board support frame to rotate relative to the seat support frame; and
The linkage mechanism comprises a lifting connecting rod and a sliding seat, wherein the sliding seat is provided with a strip-shaped groove, one end of the lifting connecting rod is hinged to the shank plate support frame, the middle part of the lifting connecting rod is hinged to the seat support frame, the other end of the lifting connecting rod is slidably connected to the strip-shaped groove, the sliding seat is far away from one end of the lifting connecting rod and is hinged to the seat support frame, the top of the sliding seat can be used for supporting a thigh plate, and the sliding seat can descend along with the lifting of the shank plate support frame and ascend along with the descending of the shank plate support frame.
The multifunctional wheelchair is in linkage fit with the first driving mechanism, the shank plate supporting frame and the linkage mechanism, so that linkage control of the shank plate and the thigh plate can be realized, and deformation of various postures can be realized. Specifically, the lower leg plate is installed at the top of the lower leg plate support frame, the thigh plate is installed at the top of the sliding seat, when the lower leg plate support frame is required to be converted into a lying state from a sitting state, the upper leg plate support frame is driven to rotate upwards to be lifted through the first driving mechanism, the lifting connecting rod is driven to rotate around the seat support frame, the sliding end of the lifting connecting rod slides along the strip-shaped groove, the sliding seat can be driven to rotate downwards around the seat support frame to fall, at the moment, the lower leg plate and the thigh plate are approximately located on the same plane, the ergonomic characteristics of the lying state are met, and the legs of a human body can be unfolded; when the sitting posture state is converted from the lying posture state, the lower leg plate supporting frame is driven to rotate downwards through the first driving mechanism to drop, the lifting connecting rod is driven to rotate reversely, the sliding end of the lifting connecting rod slides reversely along the strip-shaped groove, the sliding seat can be driven to lift upwards, at the moment, one side of the thigh plate, which is close to the lower leg plate, is slightly inclined upwards, the ergonomic characteristics of the sitting posture state are met, and the use comfort of a user can be effectively improved.
In one embodiment, the seat support frame is provided with a receiving space, and when the shank board support frame is lifted up to a certain angle above the water level, the end part of the lifting connecting rod and the sliding seat are both received in the receiving space.
In one embodiment, the sliding seat comprises two opposite side support plates arranged at intervals, and a top support plate arranged at the top of the two side support plates, the two side support plates are correspondingly provided with the bar-shaped grooves, the two opposite sides of the lifting connecting rod are respectively provided with a sliding part in sliding fit with the bar-shaped grooves, and the thigh plate is connected with the top support plate.
In one embodiment, the end part of the lifting connecting rod is provided with a shaft hole for the sliding shaft to pass through, and two ends of the sliding shaft protrude outwards from the lifting connecting rod to form the sliding part.
In one embodiment, the lower end of the shank board support frame is rotatably connected with a foot support frame, the first driving mechanism comprises a first driving piece and a transmission support frame, the transmission support frame is located below the shank board support frame, the upper end of the transmission support frame is hinged to the seat support frame, the lower end of the transmission support frame is hinged to the foot support frame, the seat support frame, the transmission support frame, the foot support frame and the shank board support frame form a parallelogram linkage mechanism therebetween, and the first driving piece 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, wherein the lower end of the side support rod is hinged with the foot support frame, the upper end of the side support rod is 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 supporting frame comprises a foot supporting frame, supporting columns and two connecting arms, wherein two opposite sides of the foot supporting frame are respectively hinged with the shank supporting frame, the supporting columns are arranged at the bottoms of the foot supporting frame, the two connecting arms are obliquely arranged, one ends of the connecting arms are fixedly connected with the foot supporting frame, and the other ends of the connecting arms are hinged with the side supporting rods.
In one embodiment, the seat support frame comprises a seat support frame, two side support frames arranged on two opposite sides of the bottom of the seat support frame, a cross beam is connected between the two side support frames, the first driving piece is a push rod motor, the mounting end of the push rod motor is connected with the cross beam, and the telescopic end of the push rod motor extends in an upward inclined mode and is connected with the transmission support 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 view of a multifunctional wheelchair according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the multifunctional wheelchair of FIG. 1 in a second state;
FIG. 4 is a schematic view of the multifunctional wheelchair of FIG. 1 in a third state;
FIG. 5 is a schematic view of the cooperation of the thigh plate and the calf plate of the wheelchair in a third state;
fig. 6 is a schematic structural view of a wheelchair bed according to an embodiment of the present invention.
10. Wheelchair, 11, seat support frame, 110, accommodation space, 111, seat support frame, 112, side support frame, 113, cross beam, 114, seat, 115, armrest, 12, walking mechanism, 13, lower leg plate support frame, 131, lower leg plate, 14, first driving mechanism, 141, first driving member, 142, transmission support frame, 1421, side support bar, 1422, lateral support bar, 15, linkage mechanism, 151, lifting link, 152, sliding seat, 1521, bar slot, 1522, side support plate, 1523, top support plate, 153, upper leg plate, 16, foot support frame, 160, pedal, 161, foot support frame, 162, support column, 163, connecting arm, 17, back support frame, 171, guide, 18, second driving mechanism, 181, back pushing lever, 182, rotation shaft, 183, sliding shaft, 184, second driving member, 21, bed frame, 22, back frame, 23, third driving mechanism, 24, base, 25, lifting mechanism, 251, cross link assembly, 252, lifting driving member.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This 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 "fixed 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 are used herein for illustrative purposes only. The terms "first," "second," and "third" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
For convenience of description, the "up" and "down" herein refer to the wheelchair 10 in a sitting position, as shown in fig. 1, a multifunctional wheelchair 10 includes a seat support frame 11, a lower leg plate support frame 13, a first driving mechanism 14 and a linkage mechanism 15. The bottom of the seat support frame 11 is provided with a running gear 12 (e.g., a caster assembly or track wheel, etc.) to facilitate movement of the wheelchair 10. The upper end of the shank board support frame 13 is rotatably connected with the seat support frame 11; the first driving mechanism 14 is used for driving the shank board 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 bar slot 1521, the lower end of the lifting link 151 is hinged with the lower leg plate support frame 13, the middle part of the lifting link 151 is hinged with the seat support frame 11, the upper end of the lifting link 151 is slidably connected in the bar slot 1521, one end of the sliding seat 152 away from the lifting link 151 is hinged with the seat support frame 11, the top of the sliding seat 152 can be used for supporting the thigh plate 153, and the sliding seat 152 can descend along with the lifting of the lower leg plate support frame 13 and ascend along with the descending of the lower leg 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 at the top of the seat support frame 11 for supporting buttocks of a human body, and a liftable armrest 115 may be provided at the side of the seat support frame 11. The upper part of the shank plate support frame 13 may be provided with a shank plate 131 for supporting the shank of the human body; the top of the slide mount 152 may be mounted with a thigh plate 153 for supporting the thighs of the human body. Preferably, the armrest 115 is provided with a controller, the controller is electrically connected with the first driving mechanism 14, the first driving mechanism 14 drives the shank board support frame 13 to rotate under the control of the controller, and lifting or dropping of the shank board 131 is realized, the shank board support frame 13 drives the linkage mechanism 15 to move, so that dropping or lifting of the thigh board 153 is realized, the operation is simple and convenient, linkage control of the shank board 131 and the thigh board 153 can be realized only by one set of driving device, interference problems caused by using multiple sets of driving devices can be avoided, and meanwhile, the cost can be effectively reduced.
The multifunctional wheelchair 10 can realize linkage control of the lower leg plate 131 and the thigh plate 153 and deformation of various postures through linkage cooperation of the first driving mechanism 14, the lower leg plate supporting frame 13 and the linkage mechanism 15. Specifically, the lower leg plate 131 is mounted on the top of the lower leg plate support frame 13, the upper leg plate 153 is mounted on the top of the sliding seat 152, when the sitting posture is required to be converted into the lying posture, the lower leg plate support frame 13 is driven to rotate upwards and lift by the first driving mechanism 14, the lifting connecting rod 151 is driven to rotate around the seat support frame 11, the lower end of the lifting connecting rod 151 is lifted upwards, the upper end of the lifting connecting rod 151 falls down and slides along the strip-shaped groove 1521, the sliding seat 152 is driven to rotate downwards around the seat support frame 11 to drop, at this time, the lower leg plate 131 and the upper leg plate 153 are in the same plane, according with the ergonomic characteristics of the lying posture, and the legs of a human body can be stretched; when the sitting posture state is required to be converted from the lying posture state, the first driving mechanism 14 drives the shank board support frame 13 to rotate downwards, then drives 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, the sliding seat 152 can be driven to lift upwards, at the moment, one side of the thigh board 153, which is close to the shank board 131, is slightly inclined upwards, the ergonomic characteristics of the sitting posture state are met, and the use comfort of a user can be effectively improved.
In one embodiment, referring to fig. 4, the seat support frame 11 is provided with a receiving space 110, and when the lower leg plate support frame 13 is lifted up to a certain angle above the horizontal plane, both the end of the lifting link 151 and the sliding seat 152 are received in the receiving space 110. Specifically, the linkage 15 may be provided as one or more sets, as long as the thigh plate 153 can be driven to lift. For example, in the present embodiment, the linkage 15 is provided as a set in the middle of the lower leg plate support frame 13 and the seat support frame 11 to ensure that a more uniform supporting force can be provided. The hinge joint of the seat support frame 11 and the lifting connecting rod 151 is provided with an avoidance notch to ensure that the lifting connecting rod 151 cannot interfere with the seat support frame 11 in the rotation process, the seat support frame 11 is provided with a containing cavity corresponding to the sliding seat 152, and the containing cavity is communicated with the avoidance notch to form a containing space 110.
When the user needs to bend his or her knee from lying to lying, the first driving member 141 only needs to drive the shank support 13 to lift upwards and raise the water level by a certain angle, the sliding end of the lifting link 151 slides along the bar-shaped groove 1521 and pushes the sliding seat 152 to move down below the top surface of the seat support 11 and to descend into the accommodating space 110, at this time, the front side of the shank 131 is in an upward inclined state, and the thigh 153 is kept in a horizontal state (as shown in fig. 5) due to the support of the seat support 11, so as to achieve the deformation from lying state to lying knee bending, so as to conform to the ergonomic characteristics in the lying knee bending state.
Referring to fig. 2 again, further, the sliding seat 152 includes two opposite side support plates 1522 disposed at intervals, and a top support plate 1523 disposed at the top of the two side support plates 1522, the two side support plates 1522 are correspondingly provided with a bar slot 1521, the opposite sides of the lifting link 151 are respectively provided with a sliding portion slidably engaged with the bar slot 1521, and the thigh plate 153 is connected to the top support plate 1523. Through the sliding fit of the two sliding parts with the two bar grooves 1521 respectively, the fit between the lifting connecting rod 151 and the sliding seat 152 is more reliable, so that the lifting of the top supporting plate 1523 and the thigh plate 153 is 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 being provided with the shaft hole at the tip of lifting connecting rod 151, when the assembly, place the tip of lifting connecting rod 151 between two side support plates 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 is convenient for assemble. Preferably, a rolling bearing may be further provided at an end portion of the sliding shaft to make sliding of the sliding shaft smoother.
Further, referring to fig. 1 and 4 together, the foot support 16 is rotatably connected to the lower end of the shank support 13, the first driving mechanism 14 includes a first driving member 141 and a driving support 142, the driving support 142 is located below the shank support 13, the upper end of the driving support 142 is hinged to the seat support 11, the lower end of the driving support 142 is hinged to the foot support 16, and a parallelogram linkage is formed among the seat support 11, the driving support 142, the foot support 16 and the shank support 13, and the first driving member 141 is used for driving the driving support 142 to rotate. Wherein, the foot supporting frame 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 frame 142 to rotate, so as to realize the movement of the foot support frame 16, the shank support frame 13 and the linkage mechanism 15, and the wheelchair 10 can be converted among sitting, lying and supine knee bending states.
Further, referring to fig. 4, the transmission support frame 142 includes two side support rods 1421 disposed opposite to each other, and a transverse support rod 1422 connected between the two side support rods 1421, wherein the lower end of the side support rod 1421 is hinged to the foot support frame 16, the upper end of the side support rod 1421 is hinged to the seat support frame 11, and a connection seat for connecting with the driving end of the first driving member 141 is disposed in the middle of the transverse support rod 1422. The two side support rods 1421 are connected into a whole through the transverse support rods 1422, so that the overall structural strength of the transmission support frame 142 is higher to ensure stronger support stability, wherein the transverse support rods 1422 can be arranged into one or more. The driving end of the first driving member 141 is connected with a connecting seat positioned in the middle of the transverse supporting rod 1422, so as to ensure the motion 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, wherein opposite sides of the foot supporting frame 161 are respectively hinged with the shank supporting frame 13, the supporting column 162 is arranged at the bottom of the foot supporting frame 161, the two connecting arms 163 are obliquely arranged, one end of each connecting arm 163 is fixedly connected with the foot supporting frame 161, and the other end is hinged with the side supporting rod 1421. When the wheelchair 10 is in a sitting state, the foot support frame 161 is easy to generate mechanical deformation due to the pedal force of the human foot, and the bottom of the support column 162 can be abutted against 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 pedal is reduced, and the service life is prolonged.
With continued reference to fig. 4, further, the seat support frame 11 includes a seat support frame 111 and two side support frames 112 disposed at two opposite sides of the bottom of the seat support frame 111, a beam 113 is connected between the two side support frames 112, the first driving member 141 is a push rod motor, the mounting end of the push rod motor is connected to the beam 113, and the telescopic end of the push rod motor extends obliquely upward to be connected to the transmission support frame 142.
Specifically, when the telescopic end of the push rod motor pushes out obliquely upwards, the transmission support frame 142, the foot support frame 16 and the seat support frame 11 can be driven to be lifted upwards together, so that the lower end of the lifting connecting rod 151 is driven to be lifted 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 contracted obliquely downwards, the transmission support frame 142, the foot support frame 16 and the seat support frame 11 can be driven to fall together, so that the lower end of the lifting connecting rod 151 is driven to fall synchronously, and the upper end of the lifting connecting rod 151 drives the sliding seat 152 to lift. The push rod motor is adopted for driving, the structure is simple, the matching is reliable, of course, the first driving member 141 can also adopt other driving structures, for example, a stepping motor can be adopted for matching with a screw transmission mechanism, so long as the rotation of the transmission supporting frame 142 can be realized, and the method is not particularly limited.
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 with 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. Wherein, the top of back support frame 17 can be equipped with the backplate, can adjust the angle of back support frame 17 through second actuating mechanism 18 to satisfy different user demands. For example, when the user wants to lie on his or her back for rest, the back support frame 17 is driven by the second driving mechanism 18 to rotate to a horizontal state, and the lower leg plate 131, the thigh plate 153, the seat plate 114 and the back plate are located on the same plane, so as to facilitate the user to lie on his or her back; when a user wants to sit up or go out, the back support frame 17 can be driven to lift upwards by the second driving mechanism 18, and meanwhile, the first driving mechanism 14 drives the shank support frame 13 and the linkage mechanism 15 to move, so that the wheelchair 10 is deformed into a chair state.
As shown in fig. 3, in an 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 mounted on the seat support 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 support frame 17 are respectively provided with a guiding member 171 in sliding fit with two ends of the sliding shaft 183, and the driving member is used for driving the back pushing rod 181 to rotate so as to drive the sliding shaft 183 to slide along the guiding member 171, and further drive the back support frame 17 to rotate. Specifically, in the lifting process, the sliding shaft 183 is driven to slide along the guide member 171 through the rotation of the back pushing rod 181, and the sliding shaft 183 can simultaneously apply force to two sides of the back supporting frame 17 while sliding along the guide member 171, so that the two sides of the back supporting frame 17 are stressed and balanced in the lifting process, and thus, when the bearing capacity of the back supporting frame 17 is increased or the back supporting frame 17 is biased, the back supporting frame can still be stably supported, thereby ensuring the stability and safety of the back lifting process of the wheelchair 10, and simultaneously, the risk of mechanical deformation damage of the second driving member 184 and the back supporting frame 17 can be effectively reduced. The second drive member 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 bed frame and a wheelchair 10, wherein the wheelchair 10 is detachably connected with the bed frame. The specific structure of the multifunctional wheelchair 10 can refer to the above embodiments, and since the wheelchair bed adopts all the technical solutions of the above embodiments, the wheelchair bed has at least all the beneficial effects brought by the above embodiments, and will not be described in detail herein.
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 with the bed frame 21, when the wheelchair 10 is assembled with the bed frame, the back support 17 is overlapped 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 17 to synchronously lift and lower, so that the overall back lifting function of the wheelchair bed can be realized.
Further, in order to facilitate the adjustment of the height of the wheelchair bed, the bed frame further comprises a base 24 and a lifting mechanism 25, the bed frame 21 is mounted on the base 24 through the lifting mechanism 25, and the lifting mechanism 25 can drive the bed frame 21 to lift in the vertical direction. For example, the lifting mechanism 25 may include a cross link assembly 251, the lower end of the cross link assembly 251 is hinged to the base 24, the upper end of the cross link assembly 251 is hinged to the bed frame 21, and a lifting driving member 252 for driving the cross link assembly 251 to move so as to lift the bed frame 21. The lifting drive 252 may employ, but is not limited to, a push rod motor or a combination of a motor and a decelerator, etc.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A multi-function wheelchair, comprising:
The seat support frame is provided with a travelling mechanism at the bottom and a lifting handrail at the side;
One end of the shank board support frame is rotatably connected with the seat support frame;
The first driving mechanism drives the shank board support frame to rotate relative to the seat support frame; and
The linkage mechanism comprises a lifting connecting rod and a sliding seat, wherein the sliding seat is provided with a strip-shaped groove, one end of the lifting connecting rod is hinged with the shank board support frame, the middle part of the lifting connecting rod is hinged with the seat support frame, the other end of the lifting connecting rod is slidably connected in the strip-shaped groove, one end of the sliding seat, which is far away from the lifting connecting rod, is hinged with the seat support frame, the top of the sliding seat can be used for supporting a thigh board, and the sliding seat can descend along with the lifting of the shank board support frame and ascends along with the descending of the shank board support frame; the seat support frame is provided with a containing space, and when the shank board support frame is lifted upwards to a certain angle above the water level, the end part of the lifting connecting rod and the sliding seat are both contained in the containing space; the hinge joint of the seat support frame and the lifting connecting rod is provided with an avoidance notch so as to ensure that the lifting connecting rod cannot interfere with the seat support frame in the rotation process, the seat support frame is provided with a containing cavity corresponding to the sliding seat, and the containing cavity is communicated with the avoidance notch to form a containing space;
The sliding seat comprises two opposite side support plates and a top support plate, wherein the two side support plates are arranged at intervals, the top support plate is arranged at the top of each side support plate, the two side support plates are correspondingly provided with the strip-shaped grooves, the two opposite sides of the lifting connecting rod are respectively provided with a sliding part in sliding fit with the strip-shaped grooves, and the thigh plate is connected with the top support plate;
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 so as to adjust the angle of the back support frame; the second driving mechanism comprises a back pushing rod, a rotating shaft, a sliding shaft and a second driving piece, wherein the rotating shaft is arranged on the seat support frame, one end of the back pushing rod is rotatably connected to the middle of the rotating shaft, the other end of the back pushing rod is connected to the middle of the sliding shaft, and guide pieces which are in sliding fit with the two ends of the sliding shaft are respectively arranged on the two opposite sides of the back support frame.
2. The wheelchair of claim 1 wherein a controller is provided on the arm rest and is electrically connected to the first drive mechanism.
3. A multifunctional wheelchair according to claim 1, characterised in that the linkage is one or more sets.
4. The multifunctional wheelchair according to claim 1, wherein the end of the lifting link is provided with a shaft hole through which a sliding shaft is inserted, and both ends of the sliding shaft protrude outward from the lifting link to form the sliding portion.
5. The multifunctional wheelchair of claim 1, wherein the lower end of the calf plate support frame is rotatably connected with a foot support frame, the first driving mechanism comprises a first driving member and a transmission support frame, the transmission support frame is located below the calf 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 is formed among the seat support frame, the transmission support frame, the foot support frame and the calf plate support frame, and the first driving member is used for driving the transmission support frame to rotate.
6. The multifunctional wheelchair according to claim 5, wherein the transmission support frame 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 frames, the upper ends of the side support rods are hinged with the seat support frames, and a connecting seat for connecting with the driving end of the first driving member is arranged in the middle of the transverse support rod.
7. The multifunctional wheelchair of 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 with the shank support frame, the support column is arranged at the bottom of the foot support frame, the two connecting arms are obliquely arranged, one end of each connecting arm is fixedly connected with the foot support frame, and the other end of each connecting arm is hinged with the side support rod.
8. The multifunctional wheelchair of claim 6 wherein the seat support comprises a seat support frame and two side support frames arranged on opposite sides of the bottom of the seat support frame, a cross beam is connected between the two side support 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 upwards and is connected with the transmission support frame.
9. A wheelchair bed comprising a bed frame and a multifunctional wheelchair according to any one of claims 1 to 8, said multifunctional wheelchair being detachably connected to said bed frame.
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| CN111317624B (en) * | 2020-02-27 | 2022-05-24 | 广东博方众济医疗科技有限公司 | Adjustment mechanism and wheelchair |
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| CN111419560B (en) * | 2020-04-22 | 2022-06-14 | 广东博方众济医疗科技有限公司 | Wheelchair bed and deformation method thereof |
| CN111481359B (en) * | 2020-05-15 | 2022-06-14 | 广东博方众济医疗科技有限公司 | Wheelchair back lifting structure, wheelchair and wheelchair bed |
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