WO2021072757A1

WO2021072757A1 - Wheelchair bed

Info

Publication number: WO2021072757A1
Application number: PCT/CN2019/111993
Authority: WO
Inventors: 杨國强; 李舟健; 冯亚磊; 封锦华; 何辉; 高雷; 尹籽深; 叶柱英; 李东坡; 王海; 端帅亮; 于万胜; 刘进; 龙观富; 黎昊灵; 李光有
Original assignee: 广东博智林智能技术有限公司
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2021-04-22
Also published as: CN111163739B; CN111163739A

Abstract

A wheelchair bed (001), comprising a bed (200) and a wheelchair (100) that can be combined and separated. The bed (200) comprises a bed body (210) and a bed backrest (220). The bed body (210) is provided with an accommodating cavity (210a), and an entrance/exit (210b) is provided on the horizontal side of the accommodating cavity (210a). The bed backrest (220) is connected to the bed body (210) in an adjustable angle, and the bed backrest (220) is located on the side of the bed body (210) away from the entrance/exit (210b). The wheelchair (100) can travel from the entrance/exit (210b) to the accommodating cavity (210a) to be combined with the bed (200). The wheelchair (100) comprises a seat (10) and a wheelchair backrest (40). The wheelchair backrest (40) is rotatably connected to the seat (10). The wheelchair backrest (40) and the bed backrest (220) can be combined and separated. When the wheelchair backrest (40) is combined with the bed backrest (220), the angle is adjusted synchronously.

Description

Wheelchair bed

Technical field

The invention relates to the technical field of medical care equipment, in particular to a wheelchair bed.

Background technique

At present, most of the medical nursing beds on the market are integral, which is extremely inconvenient for patients with mobility impairments. There are also some wheelchair beds that combine the wheelchair with the bed, but this design is not perfect and it is inconvenient to use.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention proposes a wheelchair bed, which uses a combination of a wheelchair and a bed body to make the wheelchair bed dual-purpose, and it is more convenient to use.

A wheelchair bed according to an embodiment of the present invention includes a bed body and a wheelchair that can be combined and separated, wherein the bed body includes a bed body and a bed backrest, the bed body has an accommodating cavity, and the accommodating cavity There is an entrance and exit on the horizontal side of the bed, and the backrest angle of the bed body is adjustablely connected to the bed body; the wheelchair can travel from the entrance and exit to the containing cavity to be combined with the bed body, The wheelchair includes a chair seat and a wheelchair backrest, the wheelchair backrest is rotatably connected to the chair seat, the wheelchair backrest and the bed backrest can be combined and separated, the wheelchair backrest and the bed Adjust the angle synchronously when the body and back are combined.

According to the wheelchair bed of the embodiment of the present invention, by providing a bed and a wheelchair that can be combined and separated, the user can be safely and painlessly transported from the wheelchair to the bed during the combination process, and the user can be transported to the bed during the separation process. It can be safely and painlessly transported from the bed to the wheelchair, and through the combination of the wheelchair back and the bed back, the user can also complete the back lifting operation on the bed, and the user can be realized when the wheelchair back and the bed back are not combined The operation of lifting the back can also be completed on the wheelchair, which is beneficial to reduce labor intensity and realize automatic operation, which is especially convenient for users with limited mobility and has good convenience.

In some embodiments, the bed backrest is rotatably connected to the bed body, and the wheelchair further includes a backrest driving member connected to the wheelchair backrest; wherein, the bed backrest and the wheelchair backrest are not When combined, the backrest driving member drives the wheelchair backrest to rotate; when the bed backrest and the wheelchair backrest are combined, the backrest driving member drives the wheelchair backrest to rotate, and the wheelchair backrest drives the bed body The backrest rotates.

Further, the wheelchair further includes a lower leg plate, which is rotatably connected to a side of the chair seat away from the wheelchair backrest, and the wheelchair further includes a lower leg plate drive for driving the lower leg plate to rotate. The lower leg plate driving member and the backrest driving member are independent of each other.

Further, the wheelchair further includes an armrest and an armrest lifting device, the armrest is rotatably connected to at least one side of the chair seat, and the armrest lifting device connects the chair seat and the armrest so that the armrest The rotation of the backrest of the wheelchair and the backrest of the wheelchair are independent of each other.

Further, there are two armrests, and the two armrests are connected on opposite sides of the chair seat, and the armrest lifting device includes a set of armrest driving components and two sets of turning components, and the armrests on each side correspond to One set of said turning assembly, two sets of said turning assembly are all connected with said handrail drive assembly, and the handrails on both sides rotate in reverse direction synchronously.

Optionally, each set of the turning assembly includes a fixing member arranged below the seat, a first rocker and a second rocker, one end of the first rocker is hinged with the seat, and the other end is connected to the seat. The bottom of the armrest is hinged, the fixing member is fixed on the seat, one end of the second rocker is hinged with the fixing member, and the other end is hinged with the bottom of the armrest, and the armrest driving assembly is It is configured to drive the first rocker to rotate around the hinged joint with the seat and drive the second rocker to rotate in the same direction around the hinged joint with the fixing member, the first rocker and the seat The second rocker is configured to jointly drive the armrest to turn outward to a horizontal state when rotating in a direction close to the seat, and the first rocker and the second rocker are configured to move away from the seat When the direction of the seat is rotated, the armrests are jointly driven to flip inward to a vertical state.

In some specific embodiments, the bed body is provided with first pads on opposite sides of the accommodating cavity, and the bed backrest is provided with second pads on the opposite sides of the accommodating cavity. Plate, a first mating port is defined between the first backing plate and the second backing plate on one side of the accommodating cavity, and a second mating port is defined between the two second backing plates; When the wheelchair is combined with the bed body, the two armrests are respectively fitted in the first fitting openings on both sides, and the chair seat, the armrests, and the lower leg plate are all connected to the first pad The backrest of the wheelchair is fitted in the second fitting opening, and the backrest of the wheelchair is flush with the second pad.

In some embodiments, a guide assembly for guiding the wheelchair in and out is provided between the wheelchair and the bed body.

Specifically, the guide assembly includes guide rails arranged on opposite sides of the accommodating cavity and guide wheels arranged on opposite sides of the wheelchair.

In some embodiments, a matching part is provided on the backrest of the bed body, a movable locking member is provided on the backrest of the wheelchair, and the locking member is connected with the armrest lifting device to move synchronously with the armrest. When the armrest is in a horizontal state, the locking member is matched with the mating portion, and when the armrest is in a vertical state, the locking member is disengaged from the mating portion.

Specifically, the locking member is telescopically arranged on the backrest of the wheelchair, and the locking member is connected to the armrest drive assembly through a wire rope. When the armrest drive assembly drives the armrest to be horizontal, the wire rope pulls the lock. The backrest of the wheelchair is also provided with a back lock spring, and when the wire rope is loose, the lock part is reset by the back lock spring.

In some embodiments, the armrest drive assembly drives the first rocker to rotate through a connecting rod, one end of the connecting rod is hinged with the middle of the first rocker, and the other end is hinged with the armrest drive assembly, The armrest driving assembly includes a push rod and two horizontally arranged rack rockers, the two rack rockers are meshed with gears, and the push rod is configured to drive one of the rack rockers When moving horizontally or rotating the gears, each rack rocker is hingedly connected to one end of the connecting rod of the corresponding armrest.

In some embodiments, the wheelchair further includes a footrest, and the footrest is rotatably connected to the lower leg plate.

Specifically, the wheelchair further includes: a foot pedal linkage, the foot pedal linkage is respectively connected with the lower leg plate and the seat, so as to drive the foot pedal linkage when the lower leg plate rotates .

Optionally, the foot pedal linkage is respectively hinged to the foot pedal and the chair seat, and the foot pedal linkage is constructed with the foot pedal, the lower leg plate, and the chair seat. Parallel four-bar linkage mechanism.

In some embodiments, the chair seat is provided with an assembly opening, the wheelchair further includes an upper leg plate rotatably fitted at the assembly opening, and the upper leg plate can be rotated to a part of the chair seat. Above.

In some embodiments, the wheelchair further includes a base, and the chair base is connected to the base in a liftable manner through a post. When the post is raised to the highest position, the chair seat and the chair seat are connected to the base. The part may be higher than the bed body.

In some embodiments, the wheelchair further includes a traveling device, the traveling device includes a traveling motor, a driving wheel, and a steering wheel, and the traveling motor is located outside the driving wheel and connected to the driving wheel.

In some embodiments, the bed body further includes a bottom plate, which is fixedly connected to the bed body and located at the bottom of the accommodating cavity.

In some embodiments, the wheelchair bed further includes a chair cushion, and the chair cushion is detachably connected to the wheelchair by at least one of a sliding buckle, a rotating buckle and a locking buckle.

In some embodiments, the armrest includes an armrest body, a cover, a carrier, a remote control, and a driving member. The carrier is disposed in an internal cavity of the armrest body, and the armrest body is provided with a communication unit. The opening of the internal cavity, the cover is used to close the opening, and when the cover is opened, the driving member can be triggered to drive the stage to move toward the opening, so that the stage is The remote control is exposed.

In some embodiments, the wheelchair is provided with an anti-pinch sensor where it is combined with the bed.

Specifically, the anti-pinch sensor is an elongated pressure sensor, and the plurality of anti-pinch sensors are arranged on opposite sides of the wheelchair.

In some embodiments, the bed is provided with a charging stand, the wheelchair is provided with a charging head, and when the wheelchair is combined with the bed, the charging head is connected to the charging stand for charging .

In some embodiments, a navigation device is provided on the wheelchair, and the navigation device includes at least one of a camera and an ultrasonic sensor.

The additional aspects and advantages of the present invention will be partly given in the following description, and partly will become obvious from the following description, or be understood through the practice of the present invention.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic diagram of a wheelchair before entering a bed in an embodiment of the present invention;

Figure 2 is a schematic diagram of a wheelchair bed formed by combining a wheelchair with a bed body in an embodiment of the present invention;

Figure 3 is a schematic diagram of the exploded structure of the bed in the embodiment of the present invention;

Figure 4 is a first structural diagram of a wheelchair in an embodiment of the present invention;

Figure 5 is a schematic diagram of a part of the structure of a wheelchair in an embodiment of the present invention;

Fig. 6 is a second schematic diagram of a partial structure of a wheelchair in an embodiment of the present invention;

Fig. 7 is a partial enlarged schematic diagram of the position II of Fig. 6;

FIG. 8 is a partial enlarged schematic diagram of III in FIG. 6;

Fig. 9 is a partial enlarged schematic diagram of I in Fig. 2;

Figure 10 is a schematic view of the structure of the locking member in the embodiment of the present invention;

Figure 11 is a structural schematic diagram 1 of the armrest lifting device in an embodiment of the present invention;

Figure 12 is a second structural diagram of the armrest lifting device in an embodiment of the present invention;

Figure 13 is a structural schematic diagram 1 of the armrest lifting device in another embodiment of the present invention;

Figure 14 is a second structural diagram of the armrest lifting device in another embodiment of the present invention;

Figure 15 is a second schematic diagram of the structure of the wheelchair in the embodiment of the present invention;

Figure 16 is a schematic diagram of the structure of the armrest in the embodiment of the present invention;

Figure 17 is a schematic diagram of an exploded structure of the armrest in the embodiment of the present invention;

18 is a schematic structural view of the cover of the armrest in an open state in the embodiment of the present invention;

Figure 19 is a schematic diagram of a part of a wheelchair and a chair cushion in an embodiment of the present invention;

Figure 20 is a cross-sectional view taken along line A-A of Figure 10;

FIG. 21 is a partial enlarged schematic diagram of the position IV in FIG. 20;

FIG. 22 is a schematic diagram of the structure of the rotary buckle in the embodiment of the present invention;

FIG. 23 is a schematic diagram of the structure of the chuck in the embodiment of the present invention;

24 is a schematic diagram of the coordination of the charging head and the charging base in the embodiment of the present invention;

Fig. 25 is a cross-sectional view of the internal structure of the matching charging head and the charging base in the embodiment of the present invention.

Reference signs:

Wheelchair bed 001,

Wheelchair 100,

Seat 10, first hinged end 11, second hinged end 12, fourth hinged end 13, assembly port 10a,

Armrest 20, recess 20a, first hinge part 20b, second hinge part 20c, armrest body 21, opening 21a, cover 22, lever 22a, stage 23, remote control 24, drive 25, guide mechanism 26 , Mounting seat 261, guide rod 262,

Handrail lifting device 30,

Handrail drive assembly 31, electric push rod 311, rack rocker 312, gear 313, fixed rod 314, card slot 315, cross bar 316,

Turnover assembly 32, fixing member 321, first rocker 322, second rocker 323,

Wheelchair backrest 40, locking member 41, base 411, telescopic pin 412, wire rope 42, connecting seat 4201, brake screw 4202, pin 4203, lock back spring 43, backrest driver 44, seat belt assembly 45,

Lower leg plate 50, lower leg plate driver 51,

Foot pedal 60, pedal linkage 61, third hinged end 62,

Upper leg plate 70, base 80, column 81,

Travel device 90, travel motor 91, driving wheel 92, steering wheel 93,

Bed body 200,

The bed body 210, the accommodating cavity 210a, the inlet and outlet 210b, the first matching port 210c, the second matching port 210d, the first pad 211, the second pad 212,

Bed back 220, matching part 221,

Bottom plate 230, bedside assembly 240, side plate 250, guardrail 260, dining table assembly 270, light board assembly 280,

Guide assembly 300,

Guide rail 310, guide wheel 320,

Chair cushion 400,

Sliding buckle 410, L-shaped buckle 411, pressing plate 412, gap 412a, rotating buckle 420, chuck 421, extension plate 4211, chuck 422, strip hole 4221

Anti-pinch sensor 500,

Charging stand 600,

The housing 610, the first cavity 610a, the interface 610b, the stop body 620, the plug tongue 630, the first spring 640, the second spring 650, the guide rail 660,

Charging head 700,

The housing 710, the second cavity 710a, the plug body 720, the sheath 721, the plug piece 722, and the photoelectric switch 730.

Detailed ways

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for ease of description The present invention and simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features, which are used to distinguish and describe the features, without ordering, and without distinction.

In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected", and "connected" should be understood in a broad sense unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood in specific situations.

The following describes the wheelchair bed 001 according to the embodiment of the present invention with reference to Figs. 1-25.

As shown in FIGS. 1 and 2, a wheelchair bed 001 according to an embodiment of the present invention includes a bed body 200 and a wheelchair 100 that can be combined and separated. When the wheelchair 100 and the bed body 200 are combined to form a bed, it is convenient for the user to lie down; when the wheelchair 100 and the bed body 200 are disengaged, the wheelchair 100 is removed from the bed, and the wheelchair 100 itself can be operated and used alone.

As shown in Figure 1, the bed body 200 includes a bed body 210 and a bed back 220. The bed body 210 has a containing cavity 210a. The horizontal side of the containing cavity 210a has an inlet and outlet 210b. The bed back 220 is connected to the bed in an angle adjustable manner. On the body 210. The wheelchair 100 can travel from the inlet and outlet 210b to the accommodating cavity 210a to be combined with the bed body 200, and the wheelchair 100 can enter or leave the accommodating cavity 210a through the inlet and outlet 210b, so as to realize the combination or disengagement of the wheelchair 100 and the bed body 200 to accommodate The cavity 210a reserves an assembly space for the wheelchair 100 and the bed 200 to facilitate the combination of the two. The wheelchair 100 includes a seat 10 and a wheelchair back 40. The wheelchair back 40 is rotatably connected to the seat 10, and the wheelchair back 40 and the bed back 220 can be combined and separated. When the wheelchair back 40 and the bed back 220 are combined Synchronous angle adjustment.

As shown in Figure 2, that is to say, the wheelchair 100 and the bed body 200 in the present invention can be combined, so that the user can move from the wheelchair 100 into the bed body 200 and can lie down on the bed body 200. , Has a strong convenience, especially convenient for users with mobility impairments to go to bed. Moreover, since the wheelchair back 40 and the bed back 220 are both rotatable, when the wheelchair back 40 and the bed back 220 are combined, the two can be integrated together and they can be flipped and lifted synchronously. It is difficult for the user to lift the back when lying on the bed. At this time, the wheelchair bed 001 can help the user to automatically lift the back by setting the corresponding back lifting drive. For example, when the wheelchair bed 001 is used as a medical bed, it is difficult for the patient to lift the back due to physical reasons. At this time, the combination of the wheelchair back 40 and the bed back 220 can assist the patient to lift the back, reducing the labor intensity of the doctor or nurse, and is convenient Take care of patients. In addition, when used as a medical bed, the patient does not need to move manually during the process of getting on the bed and lifting the back, thereby greatly reducing the number of patients' movements and avoiding injury.

According to the wheelchair bed 001 of the embodiment of the present invention, by providing the bed body 200 and the wheelchair 100 that can be combined and separated, the user can be transported from the wheelchair 100 to the bed body 200 in the process of combining, and in the process of separating The user is transported from the bed 200 to the wheelchair 100, and the combination of the wheelchair back 40 and the bed back 220 can realize the user's back lifting operation, which is beneficial to reduce labor intensity, realizes automatic operation, and is especially convenient for users with limited mobility. It is easy to use.

In some embodiments, the bed back 220 is rotatably connected to the bed body 210, and the wheelchair 100 further includes a back driving member 44 connected to the wheelchair back 40. When the bed back 220 and the wheelchair back 40 are not combined, the backrest driver 44 drives the wheelchair back 40 to rotate; when the bed back 220 and the wheelchair back 40 are combined, the backrest driver 44 drives the wheelchair back 40 to rotate, and the wheelchair back 40 drives the bed The backrest 220 rotates.

In other words, the bed back 220 on the bed body 210 does not have a rotating drive structure. Therefore, when the bed back 220 and the wheelchair back 40 are not combined, if you want to adjust the angle of the bed back 220, you can only pull the bed manually. Body back 220. On the wheelchair 100, the wheelchair backrest 40 can be driven to rotate by the backrest driving member 44, so that when the wheelchair 100 is used alone, the wheelchair backrest 40 can be automatically rotated by controlling the backrest driving member 44, and the angle of the wheelchair back 40 can be adjusted on the one hand. It makes the user more comfortable. On the other hand, it is convenient to use the backrest driving member 44 to automatically adjust the angle of the wheelchair back 40 during the process of coupling and disengaging with the bed body 200, which facilitates the wheelchair 100 to reduce obstacles during the in and out process. In addition, by setting the backrest driver 44 to automatically adjust the angle of the wheelchair back 40, the user himself can complete the angle adjustment operation by issuing a control command even if his legs are inconvenient. Here, when the bed back 220 and the wheelchair back 40 are combined, the backrest driving member 44 drives the wheelchair back 40 to rotate, and the wheelchair back 40 drives the bed back 220 to rotate, the backrest driving member 44 achieves a dual purpose. The bed body 200 is additionally provided with a mediation driving part of the bed body back 220, which greatly saves the cost of the bed body.

Optionally, the backrest driving member 44 is an electric telescopic rod, and both ends of the backrest driving member 44 are hinged on the seat 10 and the wheelchair back 40 respectively, and the angle of the wheelchair back 40 is changed by changing the length. In other embodiments, the backrest driving member 44 may also be a driving motor for driving the backrest driving member 44 to rotate.

In some embodiments, as shown in FIG. 3, the wheelchair 100 further includes a seat 10, an armrest 20, and an armrest lifting device 30. The armrest 20 is rotatably connected to at least one side of the seat 10, and the armrest lifting device 30 is connected to the seat 10 and The armrest 20 makes the armrest 20 and the wheelchair back 40 rotate independently of each other.

On the wheelchair 100, the armrest 20 can be driven to rotate by the armrest lifting device 30, so when the wheelchair 100 is used alone, the armrest 20 can be automatically rotated by controlling the armrest lifting device 30. On the one hand, the angle of the armrest 20 can be adjusted to make the user more comfortable. On the other hand, it is convenient to use the armrest lifting device 30 to automatically adjust the angle of the armrest 20 during the process of coupling and disengagement from the bed body 200, which facilitates the wheelchair 100 to reduce obstacles during the in and out process. In addition, by setting the armrest lifting device 30 to automatically adjust the angle of the armrest 20, the user himself can complete the angle adjustment operation by issuing a control command even if his legs or feet are inconvenient. The armrest 20 and the wheelchair back 40 rotate independently of each other, so the angle adjustment ranges of the two do not affect each other, which is beneficial for the user to adjust the sitting posture more suitable for him according to his own requirements.

Specifically, there are two armrests 20, and the two armrests 20 are connected to opposite sides of the seat 10, and the armrest lifting device 30 includes a set of armrest driving assemblies 31 and two sets of turning assemblies 32, and each armrest 20 corresponds to a set of turnings. The components 32 and the two sets of turning components 32 are all connected to the armrest drive assembly 31, and the armrests 20 on both sides rotate in reverse and synchronously. In this way, the two armrests 20 can be adjusted synchronously by using the same driving source, which can save the driving source on the wheelchair 100 and reduce the cost.

Of course, in other embodiments, the wheelchair 100 may not be provided with an armrest 20 or only one armrest 20 may be provided.

As shown in Figures 11 and 12, the armrest lifting device 30 includes an armrest drive assembly 31 and two sets of turnover assemblies 32. Each armrest 20 corresponds to a set of turnover assemblies 32; each set of turnover assemblies 32 includes a fixed set under the seat 10 A member 321, a first rocker 322 and a second rocker 323, one end of the first rocker 322 is hinged with the seat 10, and the other end is hinged with the bottom of the armrest 20, the fixing member 321 is fixed on the seat 10, and the second rocker 322 One end of the rod 323 is hinged with the fixing member 321, and the other end is hinged with the bottom of the armrest 20. The armrest driving assembly 31 is configured to drive the first rocker 322 to rotate around the hinged joint with the seat 10 and drive the second rocker 323 to rotate around the hinge. Rotating in the same direction as the hinge of the fixing member 321, the first rocker 322 and the second rocker 323 are configured to jointly drive the armrest 20 to turn outward to a horizontal state when rotating in a direction close to the seat 10, the first rocker The 322 and the second rocker 323 are configured to jointly drive the armrest 20 to flip inward to a vertical state when rotated in a direction away from the seat 10.

It should be noted that through the action of the armrest lifting device 30, the armrests 20 on both sides of the wheelchair 100 can present a process of turning and opening from the inside to the outside. When the armrest 20 is turned to the horizontal state, in some examples it can be flush with the surface of the bed body 200, thereby increasing the comfort of the user lying down; when the armrest 20 is turned to the vertical state, it can prevent the user from The wheelchair 100 is disengaged, so as to play a better protective effect. Since the armrest 20 of the wheelchair 100 adopts a flip-opening manner, it can also prevent the armrest 20 from pinching the user's hand during the retracting and opening process, which greatly improves the safety of use.

At present, most of the deformable wheelchair armrests on the market usually adopt a vertical lifting or folding design. In order to prevent the armrest from interfering with the bed structure when it is combined with the bed, the armrest is usually designed to be relatively low to ensure that the wheelchair armrest is folded, lowered, and retracted. Leave enough room for normal entry and exit of the bed. Moreover, it is often necessary to reserve cuts or blocks on the seat cushion or back cushion, so as to reserve space for the folding and lifting of the armrest. However, because the position of the armrest is too low, the angle of protection provided to the user when the user is tilted sideways will be reduced, and the user's potential safety hazard will be increased. Although these designs ensure the flatness of the bed surface after the wheelchair is transformed into the bed to a certain extent, the cuts or sections reserved on the cushion will destroy the aesthetics of the whole bed.

In the present invention, the way of turning and opening the armrest 20 is more flexible, the opening speed is faster, and the efficiency is higher. Moreover, since the armrest 20 is turned outwards and flattened, there is no need to reserve a space required for lifting or folding the armrest on the wheelchair 100, which improves the overall structural strength of the wheelchair 100. Similarly, the position of the armrest 20 can also be designed to be higher, which can provide more protection angles for the user when the user's body is tilted, thereby further improving the safety of the user. It is understandable that when the armrest 20 changes from a vertical state to a horizontal state, the wheelchair 100 changes from a wheelchair form to a bed form; and when the armrest 20 is combined with the bed body 200 in the horizontal state, the armrest 20 is fitted to the bed body 210 On the upper side, the armrest 20 can be used as a part of the bed surface, and the user's arm is supported on the horizontal armrest 20, so the bearing capacity is stronger.

Optionally, as shown in FIG. 3, the bed body 210 is provided with first pads 211 on opposite sides of the accommodating cavity 210a, and the bed back 220 is provided with second pads on opposite sides of the accommodating cavity 210a. The board 212 passes through the first pad 211 and the second pad 212 to prevent the user from directly contacting the upper surface of the bed body 210 to improve comfort. A first mating opening 210c is defined between the first backing plate 211 and the second backing plate 212 on one side of the accommodating cavity 210a, and a second mating opening 210d is defined between the two second backing plates 212. By setting the first mating opening The 210c and the second matching opening 210d are beneficial to improve the matching effect of the wheelchair 100 and the bed body 210, and facilitate the combination of the bed body 210 and the wheelchair 100. With this structural layout, after the wheelchair 100 is combined with the bed body 210, the wheelchair bed 001 can present a flat bed surface, and the user is more comfortable.

In some embodiments, as shown in FIG. 4, the wheelchair 100 further includes a lower leg plate 50, which is rotatably connected to the side of the seat 10 away from the wheelchair back 40. The wheelchair 100 further includes a lower leg plate 50 for driving the lower leg plate 50 to rotate. The lower leg plate drive member 51, the lower leg plate drive member 51 and the backrest drive member 44 are independent of each other.

On the wheelchair 100, the lower leg plate 50 can be driven to rotate by the lower leg plate driver 51, so when the wheelchair 100 is used alone, the lower leg plate 50 can be automatically rotated by controlling the lower leg plate driver 51, and the lower leg plate 50 can be adjusted on the one hand. The angle makes the user more comfortable. On the other hand, it is convenient to use the lower leg plate driving member 51 to automatically adjust the angle of the lower leg plate 50 during the process of coupling and detaching from the bed body 200, which facilitates the wheelchair 100 to reduce obstacles during the in and out process. Among them, the lower leg plate drive member 51 and the backrest drive member 44 are independent of each other, which refers to the angle of the wheelchair back 40 and the angle of the lower leg plate 50. The two do not affect each other when adjusted. The wheelchair backrest 40 and the lower leg plate 50 can be adjusted separately. Independent adjustment, the angle adjustment range of the two do not interfere with each other, so it is more convenient to use.

Optionally, the lower leg plate driving member 51 is an electric telescopic rod, and both ends of the lower leg plate driving member 51 are hinged on the seat 10 and the lower leg plate 50 respectively, and the angle of the lower leg plate 50 is changed by changing the length. In other embodiments, the lower leg plate driving member 51 may also be a driving motor for driving the lower leg plate 50 to rotate.

As shown in FIG. 4, the wheelchair 100 further includes a lower leg plate 50 and a footrest 60, the lower leg plate 50 is rotatably connected to the side of the seat 10 away from the wheelchair back 40, and the footrest 60 is rotatably connected to the lower leg plate 50. In combination with the foregoing, it can be seen that the wheelchair back 40, the lower leg plate 50, and the foot pedal 60 are all rotatable, and the armrest 20 can be turned to a horizontal state. Therefore, when the wheelchair back 40, the lower leg plate 50, and the foot pedal 60 are set accordingly After the rotation driving part of, the whole wheelchair 100 can be opened to present a flat state, so that after being combined with the bed body 200, it is convenient for the user to lie down on the bed.

As shown in Figure 2, when the wheelchair 100 is combined with the bed 200, the two armrests 20 are respectively fitted into the first fitting openings 210c on both sides, and the seat 10, armrests 20, lower leg plates 50 and footrests 60 are all fitted It is flush with the first pad 211, the wheelchair back 40 is fitted in the second mating opening 210d, and the wheelchair back 40 is flush with the second pad 212. That is to say, in this way, it is ensured that the upper surface of the combined wheelchair bed 001 is flush with no potholes, which can improve the comfort of the user when lying down, and the wheelchair bed 001 as a whole is more beautiful.

In other embodiments, the foot pedal 60 may be fixed on the lower leg plate 50, or the foot pedal 60 may be manually rotated.

In some embodiments, as shown in FIG. 1, a guide assembly 300 for guiding the wheelchair 100 in and out is provided between the wheelchair 100 and the bed body 210. The guide assembly 300 ensures that the wheelchair 100 enters the bed body 210 stably and reliably, reduces the collision between the wheelchair 100 and the bed body 210, and facilitates the combination of the two.

Optionally, as shown in FIGS. 3 and 4, the guide assembly 300 includes guide rails 310 arranged on opposite sides of the accommodating cavity 210 a and guide wheels 320 arranged on opposite sides of the wheelchair 100. Through the guide wheel 320, the wheelchair 100 is in rolling contact with the guide rail 310 during the entire guiding process, which is beneficial to reduce friction, reduce the damage of the wheelchair 100, and improve the service life of the wheelchair 100 to a certain extent.

Advantageously, the guide rails 310 on both sides are respectively formed with arc-shaped sections on the side facing the inlet and outlet 210b, and the arc-shaped sections on both sides extend away from each other in the direction from the inside to the outside, so that the guide rails 310 on both sides are A flared shape is formed at the entrance and exit 210b, which facilitates the introduction of the wheelchair 100 toward the entrance and exit 210b along the guide rail 310 from the outside.

In some embodiments, as shown in Figures 2 and 9, a mating portion 221 is provided on the backrest 220 of the bed body, and a movable locking member 41 is provided on the backrest 40 of the wheelchair. The locking member 41 is connected with the armrest lifting device 30 to connect with The armrest 20 moves synchronously. When the armrest 20 is in a horizontal state, the locking member 41 cooperates with the matching portion 221, and when the armrest 20 is in a vertical state, the locking member 41 disengages from the matching portion 221. That is to say, the wheelchair back 40 and the bed back 220 are non-manual mechanically coupled, and the combination of the two is related to the state of entering and leaving the wheelchair 100. When the wheelchair 100 enters the bed, the armrest 20 is opened, and the wheelchair back 40 is connected by the locking member 41 and the mating part 221 of the bed back 220; when the wheelchair 100 gets out of the bed, the armrest 20 rises, and the locking member 41 and the mating part 221 In this way, the wheelchair 100 can be prevented from leaving the bed when the wheelchair back 40 and the bed back 220 are not loosened, thereby preventing damage to the bed 200 and improving safety.

Optionally, as shown in FIG. 6, the locking member 41 is telescopically arranged on the wheelchair back 40, and the locking member 41 is connected to the armrest lifting device 30 through a wire rope 42. When the armrest lifting device 30 drives the armrest 20 to be horizontal, the locking member is pulled by the wire rope 42 41 stretched out. In this way, the linkage between the armrest 20 and the locking member 41 is realized, the driving source is saved for the locking member 41, and the cost is reduced. The use characteristics of the armrest 20 are also used here, that is, when the wheelchair 100 is used alone, that is, when entering or exiting the bed 200, the armrest 20 can be kept upright, and when the wheelchair 100 is combined with the bed 200, the armrest 20 needs to be turned horizontally. The movement timing of the armrest 20 coincides with the movement timing of the locking member 41, which ensures that when the wheelchair 100 is combined with the bed body 200, the locking member 41 is in the locked state, and when the wheelchair 100 and the bed body 200 are to be separated, the armrest 20 The action of can determine whether the locking member 41 is unlocked. Compared with the locking member 41 being locked by a manual locking method, the solution of the present application is beneficial to prevent the locking member 41 from being unlocked by mistake.

Optionally, as shown in FIGS. 7 and 10, the locking member 41 includes a base 411 and a telescopic pin 412. The base 411 is provided on the wheelchair back 40, and the telescopic pin 412 is movably provided on the base 411. For example, the mating portion 221 is a pin hole formed on the backrest 220 of the bed body. In this way, when the armrest drive assembly 31 drives the armrest 20 to turn over, the telescopic pin 412 is pulled by the wire rope 42 to insert it into the pin hole, thereby realizing the combination of the wheelchair back 40 and the bed back 220. The wheelchair backrest 40 is also provided with a lock back spring 43. When the wire rope 42 is loosened, the locking member 41 is reset by the lock back spring 43. That is to say, the wire rope 42 lacks pulling force after the armrest 20 is raised. At this time, the elasticity of the lock back spring 43 is used. The function can realize the reset of the telescopic pin, the structure is simple, and it is more convenient to use.

Optionally, in the armrest lifting device 30, the present application does not specifically limit the shape and arrangement of the first rocker 322, and it only needs to ensure that it achieves the corresponding function. Normally, the middle of the first rocker 322 is bent upward, and the hinge joint between the first rocker 322 and the armrest 20 is bent upward; the bottom of the armrest 20 has a recess 20a, and the recess 20a is provided with a first hinge 20b. , The curved end of the first rocker 322 is hinged with the first hinge part 20b, and the first rocker 322 is configured to push the armrest 20 to flip when the curved end rotates around the hinge with the seat 10.

Optionally, in the armrest lifting device 30, the shape and arrangement of the fixing member 321 and the second rocker 323 are not particularly limited in this application, and it is only necessary to ensure that they achieve corresponding functions. Normally, the fixing member 321 is L-shaped, and one end is fixed on the bottom surface of the seat 10, and the other end is close to the armrest 20; the bottom of the armrest 20 has a recess 20a, and the recess 20a is provided with a second hinge part 20c; The rocker 323 is in the shape of an arc, and one end is hinged with the end of the fixing member 321 close to the armrest 20, and the other end is hinged with the second hinge part 20c. In this embodiment, the first rocker 322 and the second rocker 323 cooperate to realize the flip and lift of the armrest 20, and the first rocker 322 and the second rocker 323 can be hinged to the bottom of the seat 10 respectively.

In some embodiments, as shown in FIGS. 11 and 12, the armrest driving assembly 31 drives the first rocker 322 to rotate through the connecting rod 33. One end of the connecting rod 33 is hinged with the middle of the first rocker 322, and the other end is connected to the armrest. The driving assembly 31 is hinged. Specifically, the first rocker 322 is formed into a shape with both ends bent upward. Normally, only the connecting rod 33 needs to be moved (horizontally or vertically), because the connecting rod 33 and the armrest With the hinge structure of the driving assembly 31 and the first rocker 322, the connecting rod 33 can drive the first rocker 322 to rotate. The armrest drive assembly 31 includes an electric push rod 311 and two rack rockers 312 horizontally arranged. The gear 313 is meshed between the two rack rockers 312, so that the electric push rod 311 drives the two rack rockers 312 to move synchronously. The electric push rod 311 is configured to drive one of the rack rockers 312 to move horizontally or to rotate the gear 313, and each rack rocker 312 is hinged to one end of the connecting rod 33 corresponding to the hand 20 on one side. In this embodiment, the electric push rod 311 is connected to one of the rack rockers 312. Specifically, the fixed end of the electric push rod 311 is fixed under the seat 10 by a pin, and the telescopic end of the electric push rod 311 is screwed Connected with the lower hole of the rack rocker 312 below, the gear 313 is relatively fixed to the seat 10 by a pin. The telescopic end of the electric push rod 311 can drive the rack rocker 312 to move horizontally, and the gear 313 functions At the same time, it drives the other rack rocker 312 to move horizontally in the opposite direction. In other examples, the electric push rod 311 may also be a manual telescopic rod, so as to manually push the armrest 20 up and down.

Optionally, a fixed rod 314 is connected to the end of the rack rocker 312, the fixed rod 314 is provided with a slot 315, and the armrest 20 is configured to slide into the slot 315 of the fixed rod 314 on the same side when the armrest 20 is configured to be in a vertical state. Inside. Due to the special structure of the flip assembly 32 and the connection relationship with the armrest 20, the armrest 20 is on the same horizontal plane as the seat 10 when the armrest 20 is in a horizontal state. When the armrest 20 is in a vertical state, the armrest 20 as a whole will move downward so that the bottom can slide in. Positioning is achieved in the corresponding card slot 315; in order to achieve switching between different states, a limit wheel can be provided at the bottom of the armrest 20 to facilitate the limit wheel to slide into or out of the card slot 315.

At this time, the working process of the armrest lifting device 30 is: under the action of the electric push rod 311, the lower rack rocker 312 drives the connecting rod 33 to move, pushes the subsequent first rocker 322 to rotate and drives the second rocker 323 Rotating, the first rocker 322 rotates around the hinged joint with the seat 10, and the second rocker 323 rotates around the hinged joint with the fixing member 321, so as to push the armrest 20 on one side to rotate. When the electric push rod 311 pushes the lower rack rocker 312 to move, the gear 313 engages and drives the upper rack rocker 312 to move in the opposite direction, thereby pushing the corresponding connecting rod 33 and passing the corresponding first rocker 322 and the second rocker 323 drive the armrest 20 on the other side to synchronously rotate. When the armrests 20 on both sides are rotated by 90° and are in a vertical state, the limiting wheels at the bottom of the armrests 20 slide into the slots 315 at the ends of the fixed rods 314 on the same side, thereby restricting the armrests 20 on both sides from shaking left and right.

In some embodiments, as shown in FIGS. 13 and 14, the armrest drive assembly 31 includes an electric push rod 311 fixed under the seat 10, the bottom end of the electric push rod 311 telescopes up and down, and the bottom end of the electric push rod 311 is fixed There is a cross bar 316, both ends of the cross bar 316 are hinged with the connecting rods 33 of the armrests 20 on both sides respectively. The fixed end of the electric push rod 311 is fixed under the seat 10 by a bolt, and the telescopic end of the electric push rod 311 is fixedly connected with a cross bar 316, which is connected to the connecting rod 33 corresponding to the armrests 20 on both sides, and the electric push rod 311 The expansion and contraction of the telescopic end can drive the crossbar 316 and the connecting rod 33 to move up and down, so as to realize the synchronous lifting of the armrest 20. In this embodiment, the recess 20a, the first hinge part 20b, and the second hinge part 20c are located on the bottom and outward side of the armrest 20 in a vertical state, and the curved end of the first rocker 322 is close to a right-angled shape, half-enclosed The bottom of the armrest 20 and supports the bottom of the armrest 20. With the rotation of the first rocker 322, under the restriction of the curved end, the armrest 20 is pushed to turn over; the second rocker 323 surrounds the curved part of the armrest 20 and has the same effect on the armrest 20. With a restrictive effect, with the rotation of the second rocker 323, the armrest 20 can also be pushed to turn over.

At this time, the working process of the armrest lifting device 30 is: under the action of the electric push rod 311, the connecting rod 33 is driven to move, pushing the subsequent first rocker 322 to rotate and drive the second rocker 323 to rotate, the first rocker 322 Rotating around the hinged joint with the seat 10, the second rocker 323 rotates around the hinged joint with the fixing member 321, thereby pushing the armrests 20 on both sides to rotate synchronously.

In some embodiments, as shown in Figures 7 and 8, when the locking member 41 is in operation, the moving end 311a of the electric push rod 311 is connected to the rack rocker 312 via the pin 4203, and one end of the wire rope 42 is provided with a connection The seat 4201, the connecting seat 4201 is fixed to the rack rocker 312 by the brake screw 4202, so that when the rack rocker 312 is extended or shortened, it will drive the wire rope 42 to move, and the other end of the wire rope 42 is connected to the telescopic pin 412 Under the action of the wire rope 42, the telescopic pin 412 reciprocates on the base 411 to cooperate with the matching portion 221, so as to realize the separation and combination of the wheelchair back 40 and the bed back 220.

In the present invention, after the bed and chair are combined, the wheelchair back 40 and the bed back 220 are automatically combined into one body, and the automatic combination is realized in the form of a telescopic pin 412. The locking structure of the wheelchair back 40 and the bed back 220 includes a telescopic pin 412, a lock back spring 43, a wire rope 42, and a base 411. When the wheelchair 100 turns into a bed state, the armrest 20 changes from the vertical state to the horizontal state at the end. At this time, the armrest drive assembly 31 will pull out the telescopic pin 412 through the wire rope 42 and the telescopic pin 412 will automatically be inserted into it. The mating portion 221 of the bed back 220 realizes the connection between the wheelchair back 40 and the bed back 220 to achieve the purpose of lifting the back together. When the wheelchair 100 turns into a chair state, the armrest 20 of the wheelchair 100 changes from a horizontal state to a vertical state, the wire rope 42 will relax, and the telescopic pin 412 is automatically reset and retracted into the chair body 100 under the action of the lock back spring 43 , To realize the separation of the wheelchair back 40 and the bed back 220.

In the present invention, in addition to the structural size of the chair-bed combination, one of the useful functions is to complete the combination of the wheelchair back 40 and the bed back 220, and realize the synchronous lifting of the wheelchair back 40 and the bed back 220. At present, the existing wheelchair beds on the market mainly adopt manual mechanical combination in the combination of the chair back and the bed back, and the two parts are combined by manual mechanical latch or a buckle mechanism driven by a pull wire. The biggest disadvantage of the mechanical operation method is that it needs to be manually cut manually, and can only be operated under the condition of nursing staff. This lacks relevance to the state of the wheelchair getting out of the bed, and getting out of the bed when the back coupling mechanism is not loosened can easily cause damage. However, in the present invention, the automatic locking of the wheelchair back 40 and the bed back 220 is realized through the designed locking structure, which has strong linkage.

In some embodiments, as shown in FIGS. 5 and 6, the wheelchair 100 further includes: a lower leg plate driving member 51 and a foot pedal linkage member 61. The lower leg plate driver 51 is connected between the lower leg plate 50 and the seat 10 to drive the lower leg plate 50 to rotate. For example, the lower leg plate driver 51 is a push rod motor, one end of the push rod motor is hinged on the seat 10 and the other end is hinged On the lower leg plate 50, there is a space between the end of the push rod motor close to the seat 10 and the seat 10, so that the push rod motor, the seat 10, and the lower leg plate 50 are distributed in a triangle shape, so that when the push rod motor is When extended, the lower leg plate 50 can be driven to rotate around the hinge point with the seat 10, thereby driving the lower leg plate 50 to rotate. In a specific example, the lower leg plate driving member 51 can also drive a motor, and the motor shaft of the driving motor is connected to the rotation shaft of the lower leg plate 50, and the lower leg plate 50 can also be driven to rotate in this way. The pedal linkage 61 is respectively connected with the lower leg plate 50 and the seat 10 to drive the pedal 60 to be linked when the lower leg plate 50 rotates. The pedal linkage 61 realizes the linkage function to realize the pedal 60 and the lower leg Synchronous rotation of the plate 50.

Optionally, as shown in FIG. 6, the pedal linkage 61 is hinged to the pedal 60 and the seat 10 respectively, and the pedal linkage 61 is constructed parallel to the pedal 60, the lower leg plate 50 and the seat 10 Four-bar linkage mechanism. It can be understood that the seat 10 has a first articulated end 11 and a second articulated end 12, the first articulated end 11 is connected to the footrest 60, the second articulated end 12 is connected to the seat 10, and the footrest 60 has The third hinged end 62 connected with the pedal linkage 61, the seat 10 has a fourth hinged end 13 connected with the pedal linkage 61, so the parallel four-bar linkage mechanism is actually composed of: pedal linkage 61. The lower leg plate 50, the connecting line of the first hinged end 11 and the third hinged end 62, and the connecting line of the second hinged end 12 and the fourth hinged end 13 are formed, so that the lower leg plate 50 and the lower leg plate 50 and Synchronous rotation of the foot pedal 60.

In some embodiments, as shown in FIG. 6, the wheelchair 100 further includes a backrest driving member 44 for driving the wheelchair backrest 40 to rotate on the seat 10. For example, the backrest driver 44 is a push rod motor, one end of the push rod motor is hinged on the wheelchair back 40 and the other end is hinged below the seat 10, wherein the backrest driver 44, the wheelchair back 40, and the seat 10 form a triangle. When the push rod of the push rod motor is shortened, the wheelchair back 40 can be driven to rotate from the vertical state to the horizontal state; when the push rod of the push rod motor is extended, the wheelchair back 40 is driven to rotate, and then from the horizontal state. The state changes to the vertical state.

It is worth noting that, in the existing deformable wheelchairs on the market, the lifting of the back plate and the leg plate are mostly controlled by the wheelchair or the bed alone, which is difficult to meet the application requirements of the multi-functional combination. In the design in which the back pushing and leg raising device is fixedly connected to the wheelchair back plate, it is difficult to push the back plate of the entire bed up and down when the bed and chair are integrated. In the design where the push-back device is fixedly connected to the backboard of the bed body, it is difficult for the backboard to realize automatic control when the wheelchair is used independently. In the design where both the bed frame and the wheelchair are equipped with push-back devices, how to solve the independence of function control and avoid interference between the two sets of control devices is an important link that affects the realization of the combination of the wheelchair bed function. Panasonic wheelchair bed products use the chute design to achieve the independence of the two sets of control devices, avoiding interference between the control devices, but the single-sided bed frame push design still has the stability and safety issues of pushing. In the wheelchair 100 of the present invention, the lifting movement of the lower leg plate 50 and the footrest 60, the lifting movement of the armrest 20, and the lifting movement of the wheelchair back 40 are independent and do not interfere with each other. Wherein, when the wheelchair 100 is combined with the bed 200, the backrest driving member 44 can drive the wheelchair back 40 and the bed back 220 to rise and fall together, thereby realizing the operation of lifting the back.

In some embodiments, as shown in FIG. 4, the seat 10 is provided with an assembly opening 10a, and the wheelchair 100 further includes an upper leg plate 70 rotatably fitted at the assembly opening, and the upper leg plate 70 can be rotated to a part located in the chair. Above the seat 10. For example, when the wheelchair 100 undergoes a bed-chair change from a bed state to a wheelchair state, the upper leg plate 70 is raised to a certain angle to reach a position where the legs are more comfortable when the human body is sitting. Among them, the lifting angle of the upper leg plate 70 can be adjusted according to needs, for example, the range is 15 degrees to 18 degrees, to meet the needs of different users.

In some embodiments, the upper leg plate 70 is lifted manually or automatically. For example, an electric push rod can be stopped below the upper leg plate 70, and the upper leg plate 70 is driven to lift by the push of the electric push rod. In addition, when the lower leg plate driving member 51 is a push rod motor, the end of the push rod motor close to the seat 10 may be provided with a connecting rod (not shown in the figure), so that the push rod motor drives the connecting rod during the rotation process. The upper leg plate 70 is pushed up, and in this way, the motion linkage of the upper leg plate 70 and the lower leg plate 50 can be realized, which is beneficial to realize automatic operation.

In some embodiments, as shown in FIG. 15, the wheelchair 100 further includes a base 80. The chair base 10 is connected to the base 80 in a liftable manner through a column 81. When the column 81 is raised to the highest position, the chair base 10 and the chair base 10 are The connected part may be higher than the bed body 210. For example, the column 81 may be a high-power, multi-stroke lifting column. When the push rod of the column 81 is extended, the seat 10 and the components connected to the seat 10 are driven to rise above the bed body 210 as a whole. Conversely, when the push rod of the column 81 is shortened, the seat 10 and the components connected to the seat 10 are lowered as a whole. The lifting of part of the components of the wheelchair 100 can improve the convenience of users and adapt to the comfort of users of different heights. For example, when the wheelchair 100 is a nursing chair, it can also improve the accompany of the attendant in the wheelchair. The convenience. It is worth noting that in this way, the wheelchair 100 can be raised into the bed, so that when the wheelchair 100 enters and exits the accommodating cavity 210a, the seat 10 and the components connected to the seat 10 are prevented from interfering with the bed body 200, and the bed can be lowered. The structure of the body 200 is complicated.

Especially when the seat 10 and the components connected to the seat 10 are set to fit the bed 200 in the unfolded state, the problem of interference with the bed 200 when the wheelchair 100 enters and exits needs to be solved. Conversely, through the design of the lifting structure of the seat 10, after solving the problem of interference between the wheelchair 100 and the bed body 200 when the wheelchair 100 enters and exits, the seat 10 and the components connected to the seat 10 can be set to be exactly in the unfolded state. It fits with the bed body 200, so that the combined wheelchair bed 001 bed surface is more flat and beautiful, and there is no need to design too many gaps, escape openings, etc.

In some embodiments, as shown in FIG. 15, the wheelchair 100 further includes a traveling device 90. The traveling device 90 includes a traveling motor 91, a driving wheel 92, and a steering wheel 93. The driving motor 91 is located outside the driving wheel 92 and connected to the driving wheel 92. . In a specific example, for example, the driving motor 91 may be a DC motor, the driving wheel 92 is arranged in front of the wheelchair 100 as a power wheel and is driven by the DC motor, and the steering wheel 93 is a universal wheel arranged behind the wheelchair 100 to drive Wheelchair 100 walks. This time, the driving wheel 92 and the steering wheel 93 can be wheels with a large radius, so that they have a relatively strong ability to overcome obstacles and can meet the outdoor use of the wheelchair.

Among them, the base 80 adopts an ordinary wheelchair chassis instead of an AGV chassis, so that the manufacturing cost of the wheelchair 100 can be reduced.

In the present invention, before the bed and chair are automatically combined, first, the push rods of the lower leg plate driving member 51 and the backrest driving member 44 of the wheelchair 100 are extended, the push rod of the column 81 is raised, and the upper part of the wheelchair 100 will avoid the bed structure In this way, the bed structure is a static structure, the bed structure will be simpler and lower cost. After reaching the preset position, the action before entering the bed is completed. Secondly, the process of wheelchair entering the bed requires two conditions to ensure smooth and safe entry. The first is that when the wheelchair enters the bed, there is a corresponding guiding device on the bed body 200 to ensure that the wheelchair 100 plays a guiding role in small deviations. The second is to rely on the infrared vision navigation scheme to enable the wheelchair 100 to automatically find the position to enter the bed smoothly. Third, when the wheelchair 100 enters the bed body, a limit mechanism is added to the corresponding bed body part. When the wheelchair 100 enters a certain distance, the wheelchair 100 is restricted to continue to move forward, so as to complete the preparation for the integration of the wheelchair 100 and the bed body 200. Finally, when the wheelchair 100 and the bed meet the fit plan, the push rods of the lower leg plate driving member 51 and the backrest driving member 44 of the wheelchair 100 are shortened, and the push rod of the column 81 is lowered until the lowering is flush with the bed frame. The electric push rod 311 at the armrest 20 is shortened, so that the armrest 20 is changed from a vertical state to a horizontal state. At the same time, the locking structure of the backrest is driven to realize the automatic retracting of the wheelchair back 40 and the bed back 220, and finally the integration process of the wheelchair bed is completed.

In some embodiments, as shown in FIG. 3, the bed body 200 further includes a bottom plate 230, which is fixedly connected to the bed body 210 and located at the bottom of the receiving cavity 200a. When the wheelchair 100 enters the bed, in order to prevent insufficient friction of the bed body 200 on the ground, the bed body 200 moves due to lateral force during the wheelchair 100 entering the bed, thereby affecting the attitude of the wheelchair 100 when entering the bed. Here, a bottom plate 230 is added to the bottom of the bed body 200. During use, the bottom plate 230 is placed on the ground and locked with the bed body 210 through four legs. After the wheelchair 100 enters the bed body 200, the wheelchair 100 moves on the bottom plate 230. . In this way, even when the bed body 200 moves slightly laterally, the relative position of the wheelchair 100 and the bed will not change drastically, and the entering posture of the wheelchair 100 will not be affected basically.

Optionally, the bottom plate 230 may be an aluminum alloy plate, which has high structural strength and low cost.

Optionally, as shown in FIG. 3, the bed body 200 further includes: a bed head assembly 240 and two side panels 250. The two side panels 250 are provided on both sides of the bed body 210 in the width direction, which can improve the overall bed body 200. The structural strength is more beautiful.

Optionally, as shown in FIG. 3, a guardrail 260 is provided on the bed body 210, so that the head assembly 240, the two side panels 250, and the guardrail 260 constitute the peripheral protection device of the bed body 200, which can prevent the user from falling. The role of improving safety.

Optionally, as shown in FIG. 3, a dining table assembly 270 is provided on the bed body 210. The dining table assembly 270 may be a dining table, and the dining table may be set on the guardrail 260, so as to facilitate the user to eat on the bed. Among them, the bed body 210 is composed of welding parts, and its main function is to install and support other components of the bed body 200. In addition, the bed body 200 is mainly composed of a bed body 210, a bed head assembly 240, and a side plate 250, which is convenient for disassembly, assembly and transportation.

Optionally, as shown in FIG. 3, two spaced apart light board assemblies 280 are provided at the end of the bed body 210. The light board assemblies 280 can provide an identification function for the wheelchair 100 to automatically enter the bed after being lit, so as to use The visual inspection navigation is conducive to realizing the automatic bed entry of the wheelchair 100.

In some embodiments, as shown in FIG. 19, the wheelchair bed 001 further includes a chair cushion 400, and the chair cushion 400 is detachable by at least one of a sliding buckle 410, a rotating buckle 420, and a locking buckle (not shown) Connected to the wheelchair 100. For example, the wheelchair back 40, the lower leg plate 50, and the foot pedal 60 are all provided with sliding buckles 410, and the rotating buckles 420 are evenly distributed on the wheelchair back 40, the lower leg plate 50, and the foot pedal 60. The chair seat 10 is provided with a rotating buckle 420, and the armrest 20 is provided with a locking buckle. By adopting a variety of buckle methods for cooperation, the chair cushion 400 can be better secured to the wheelchair 100. According to the softness and deformability of the chair cushion 400, three types of buckles, namely the rotating buckle 420, the sliding buckle 410, and the locking buckle, are used to realize the rapid disassembly of the chair cushion 400. The rotating buckle 420 fixes the up and down direction and lock The buckles are fixed in the left and right directions, and the front and rear directions are movable. Because the chair cushion 400 is stretched and compressed in the front and rear directions during the change of the bed and chair, the sliding buckle 410 is used to realize the movement. The headrest cushion, the armrest cushion, and the cushion on the bed board are all fixed and fixed and quick-released by using the locking buckle. Similarly, in the present invention, the mattress of the bed body 200 can also be quickly disassembled by using the rotating buckle 420 and the sliding buckle 410 to cooperate together.

In some embodiments, as shown in FIGS. 20 and 21, the sliding buckle 410 includes: an L-shaped clamping plate 411 and a pressure plate 412. The L-shaped clamping plate 411 is provided on the chair cushion 400, and the pressure plate 412 is provided on the corresponding wheelchair 100. There is a gap 412a between the component and the corresponding component. For example, taking the seat 10 as an example, the pressure plate 412 is provided on the seat 10 and has a gap 412a with the seat 10. When the buckle is performed, the chair cushion 400 slides on the wheelchair 100 so that the free end of the L-shaped clamping plate 411 abuts on the pressing plate 412 and is located in the gap 412a, so as to realize the sliding buckle between the chair cushion 400 and the wheelchair 100.

In some embodiments, as shown in FIGS. 22 and 23, the rotary buckle 420 includes a chuck 421 and a chuck 422. The chuck 421 is arranged on the chair cushion 400, and the end of the chuck 421 away from the chair cushion 400 is arranged There is an extension board 4211. The chuck 422 is arranged on the seat 10, the chuck 422 has a cavity, the chuck 422 is provided with a strip hole 4221 communicating with the cavity, and the extension plate 4211 can be matched with the strip hole 4221 to enter the cavity . During the rotation and clamping, by rotating the initial position of the seat cushion 400, the extension plate 4211 of the chuck 421 fits with the strip hole 4221 and enters the cavity. Then, after the seat cushion 400 is turned back, the chuck 421 extends The plate 4211 is confined in the cavity of the chuck 422 so as to achieve rotational clamping.

Optionally, there may be multiple strip holes 4221. For example, two strip holes 4221 are formed in a cross shape on the chuck 422. In this way, the efficiency of matching between the extension plate 4211 and the strip holes 4221 can be improved, and the card rotation can be facilitated. tight.

In some embodiments, as shown in FIGS. 16 and 17, the armrest 20 includes an armrest body 21, a cover 22, a stage 23, a remote control 24, and a driving member 25, and the stage 23 is arranged inside the armrest body 21 In the cavity, the armrest body 21 is provided with an opening 21a communicating with the internal cavity. The cover 22 is used to close the opening 21a. When the cover 22 is opened, the driving member 25 can be triggered to drive the stage 23 to move toward the opening 21a to enable the loading The remote controller 24 on the stage 23 is exposed. In this way, as shown in FIG. 18, when the cover 22 is in the unopened state, the remote control 24 and the stage 23 are hidden in the internal cavity of the armrest body 21, which can effectively prevent the user from touching by mistake. Avoid danger.

Optionally, the cover 22 is slidably arranged on the armrest body 21, the driving member 25 is a lever, the lever is arranged in the inner cavity and the middle part is hinged on the armrest body 21, one end of the lever is matched with the cover 22 and the other end Stop at the bottom of the stage 23. The cover 22 is configured such that when the cover 22 is slid open, the cover 22 can trigger one end of the lever to rotate the lever, and the other end of the lever drives the stage 23 to move toward the opening 21a.

Optionally, as shown in FIG. 17, an end of the cover plate 22 close to the driving member 25 is provided with a lever 22a, and the cover plate 22 contacts the lever through the lever 22a during the sliding and opening process, thereby pushing the lever to rotate.

Optionally, as shown in FIG. 17, a guide mechanism 26 is provided in the armrest body 21. The guide mechanism 26 includes a mounting seat 261 and a guide rod 262. The mounting seat 261 is fixed on the armrest body 21, and the guide rod 262 slides through the mounting On the seat 261, and one end of the guide rod 262 is connected with the stage 23. During the moving process of the stage 23, the guide rod 262 cooperates with the mounting seat 261 to ensure that the moving process of the stage 23 is stable and reliable.

It is worth noting that the remote controller 24 is the hand controller of the wheelchair 100. Through the joystick operation of the hand controller, the driving functions of the wheelchair 100 can be controlled, such as forward, backward, shift to the left, shift to the right, and obstacle crossing. And other functions. Among them, the buttons of the hand controller have the function of making the wheelchair 100 one-key bed and chair conversion. Among them, each of the two armrests 20 has a place for installing a hand controller. The hidden hand controller can be installed in the left armrest 20 or the right armrest 20 according to user needs to adapt to the habit of left and right hands. User needs.

In some embodiments, as shown in Figures 4 and 5, during exercise and bed-chair change, the wheelchair 100 is equipped with a seat belt assembly 45, which is provided on the wheelchair back 40 to protect the user. Ensure that the user does not leave the wheelchair 100 during this process to avoid danger.

In some embodiments, the wheelchair 100 is provided with an anti-pinch sensor 500 where it is combined with the bed 200.

In some embodiments, as shown in FIG. 5, the anti-pinch sensor 500 is a strip-shaped pressure sensor, and there are multiple anti-pinch sensors 500 and are arranged on opposite sides of the wheelchair 100. In this way, when the wheelchair 100 is combined with the bed 200, the anti-pinch sensor 500 can remind the user to prevent the user from being injured by the pinch, thereby improving the safety of use.

In the example of FIG. 5, two anti-pinch sensors 500 are respectively provided on the front and rear sides of each armrest 20, two anti-pinch sensors 500 are respectively provided on the left and right sides of the wheelchair back 40, and the left and right sides of the lower leg plate 50 are respectively provided. There are two anti-pinch sensors 500, and two anti-pinch sensors 500 are respectively provided on the left and right sides of the foot pedal 60.

In some embodiments, a rechargeable lithium battery is provided in the cavity of the base 80 for controlling automatic control devices such as a circuit board, so as to make better use of the structural space of the wheelchair 100.

In some embodiments, as shown in FIG. 24, the bed 200 is provided with a charging stand 600, and the wheelchair 100 is provided with a charging head 700. When the wheelchair 100 is combined with the bed 200, the charging head 700 is connected to the charging stand 600 To charge. In this way, it can be ensured that the wheelchair 100 is always in a state of sufficient power, so as to avoid insufficient power of the wheelchair 100 when in use.

Optionally, as shown in FIG. 3, the charging stand 600 can be arranged in the middle position of the bed body 210, so that when the wheelchair 100 is automatically entered into the bed, the wheelchair 100 can be charged after being charged on the charging stand 600.

Optionally, as shown in FIG. 24 and FIG. 25, the charging head 700 includes: a housing 710 and a plug-in body 720. The housing 710 has a second cavity 710a and defines an insertion direction. The plug-in body 720 is matched with the housing 710. The plug-in body 720 includes an insulating sleeve 721 arranged along the plugging direction and a plug piece 722 for connecting the power supply device. The sleeve 721 is wrapped around the plug piece 722 to realize the pairing of the plug pieces. For the protection of 722, the insert 722 includes a start section and an end, the end has a conductive contact part, the start section is located in the second cavity 710a, and the end is located outside the housing 710. In the plugging direction, the sheath 721 can move relative to the insert 722 into the second cavity 710a under the action of the load to expose the contact part and move out of the second cavity 710a to wrap the contact when the load is removed. That is, when the wheelchair 100 is combined with the bed 200, the charging stand 600 is matched with the charging head 700. At this time, the cover 721 exposes the insert 722 due to the forced movement, so that the charging can be performed.

Optionally, as shown in Figs. 24 and 25, the charging stand 600 includes: a housing 610, an insulating stopper 620, and a tongue 630 with conductive contacts. The housing 610 has a first cavity 610a and an interface 610b passing through the first cavity 610a. The stop body 620 is connected to the housing 610 and blocks the interface 610b, so as to protect the plug tongue 630. The stop body 620 is configured to retract into the first cavity 610a in the first direction when being squeezed to expose the interface 610b, and expand when the squeezing effect is eliminated to fill the interface 610b. The plug tongue 630 is located in the first cavity 610a and is in contact with the stop body 620. The plug tongue 630 can shrink and expand in the second direction synchronously with the stop body 620. The plug tongue 630 and the plug piece 722 of the charging head 700 When the stopper 620 retracts into the first cavity 610a, the plug tongue 630 is in an extended state and the contact head is located in the projection area of the interface 610b in the second direction when the stopper 620 is retracted into the first cavity 610a.

Optionally, both the charging head 700 and the charging base 600 are provided with sensitive elements (not shown in the figure) for determining the distance between the charging head 700 and the charging base 600. For example, the sensitive element is an infrared emitting head or an infrared receiving head. The housing of the charging head 700 is equipped with an infrared receiving head, and the housing of the charging stand 600 is equipped with an infrared emitting head. When the wheelchair 100 enters the bed, the infrared ray is emitted from the hair. It is received by the infrared receiving head, thereby controlling the circuit of the charging head 700 to be energized. In other examples, the sensitive element may also be a communication method such as Bluetooth, WiFi, and NFC.

Optionally, as shown in FIG. 24, a switch is provided on the charging head 700, so that the plug-in power supply device can optionally be controlled to form an electrical path or an open circuit. For example, the switch is a photoelectric switch 730 or a contact switch. The photoelectric switch 730 is configured to control the electrical path or disconnection between the insert and the power supply device according to the on-off of the optical path, and the sheath 721 is connected with an opaque light blocker. , The light blocking body can move synchronously with the sheath 721 to block or restore the optical path of the photoelectric switch 730. The contact switch is configured to be touched by the sheath 721 moving into the second cavity 710a to conduct the electrical connection between the insert 722 and the power supply device, and to disconnect the insert 722 from the power supply when the sheath 721 is separated from the contact switch. Electrical connection between devices.

Optionally, a first spring 640 is provided between the stop body 620 and the housing 610. One end of the first spring 640 supports the stop body 620 and the other end is supported on the housing 610, so that the stop body 620 is not affected. Reset when force is applied.

Optionally, a second spring 650 is provided between the plug tongue 630 and the housing 610, one end of the second spring 650 supports the plug tongue 630 and the other end is supported on the housing 610. When the stop body 620 is forced to move horizontally, the insert piece 722 enters the interface 610b, and the insert tongue 630 can be pushed up under the action of the second spring 650, so as to realize the cooperation of the insert piece 722 and the insert tongue 630, and realize both The electrical conduction.

Optionally, a guide rail 660 is provided in the housing 610, and the tongue 630 is slidably fitted on the guide rail 660, so that the tongue 630 can be stably and reliably extended and moved in the vertical direction, which facilitates the cooperation between the insert piece 722 and the insert tongue 630 .

It is worth noting that the existing electric wheelchair charging process requires a manual external power adapter at the wheelchair interface to charge, and for the current wheelchair bed products with fewer product types, there is basically no more convenient and efficient solution for this comprehensive product. The charging solution still needs to consider the wheelchair part as an independent product and manually charge it. Such an operation mode destroys the integrity of the wheelchair bed. In addition, if the wheelchair is in the bed state, it is extremely inconvenient to manually plug in the wheelchair to charge the wheelchair, and it is also extremely unfriendly to the patient user who uses the wheelchair bed. In the present invention, the wheelchair 100 can also be equipped with a manual charging interface, which can realize manual charging and can automatically charge after docking with the bed 200. That is, the wheelchair base 80 is provided with a manual charging socket and hidden The charging head 700 is designed to charge the wheelchair through a manual charging socket in the wheelchair state. After the docking with the bed 200 is completed, the protruding charging contact electrode on the bed 200 penetrates into the wheelchair 100 to reach the power receiving electrode of the wheelchair to complete the charging. The circuit is turned on, and the wheelchair 100 is automatically charged through the bed 200.

In some embodiments, a navigation device (not shown in the figure) is provided on the wheelchair 100, and the navigation device includes at least one of a camera and an ultrasonic sensor. For example, a number of ultrasonic sensors can be provided on the base 80 to help determine obstacles when the wheelchair 100 is walking, so as to better complete various motion actions. A camera may be provided on the rear side of the base 80 to perform a visual navigation function. In addition to identifying the bed body 200 to automatically connect the body 200, it can also further help determine obstacles during walking.

To sum up, compared with the manual combination design of the wheelchair and the bed in the nursing bed, it increases the workload of the nursing staff when caring for the patient, and also increases the risk of injury and falling of the bed for the patient during the bed. The invention is beneficial to realize a product intelligent wheelchair equipment, which is suitable for the daily rest, movement and care of the disabled or people with motor dysfunction in their lower limbs in a small area near their homes or nursing homes. Products with integrated design of wheelchairs that realize the function of automatic navigation into the bed are few in the current market.

The wheelchair bed 001 of the present invention realizes the unmanned docking and separation with the bed body through the intelligent control of each mechanical structure and the cooperation of the automatic navigation system. The wheelchair entry and exit posture restriction design prevents accidental pinching and slipping of patients during the docking process, and provides support for the daily activities of the bedridden elderly. Through design, the wheelchair bed 001 of the present invention has the following functions: anti-falling function, auxiliary dining function, auxiliary wheelchair entering function, wheelchair charging function, and preventing bed sliding function.

The wheelchair bed 001 of the present invention can be an integrated nursing bed composed of independent wheeled parts with detachable, deformable and moving functions and a main body bed frame, which can be operated by a occupant or a caregiver. The integrated design of the wheelchair bed mainly solves the mobility problem of the elderly with limited mobility, reduces the risk of falling caused by manual lifting or autonomously getting out of the bed during the transfer process from the bed to the wheelchair before going to the toilet or traveling, and avoids the movement process The friction between the human body and the appliance causes skin damage. Based on the bed and chair deformation function, and around the clinical rehabilitation and nursing needs of patients with semi-disability and disability, the bed and chair automatic deformation, wheelchair movement control, back lifting, leg lifting and safety protection support functions are designed to relieve nursing staff. Provide support to increase the comfort of the nursing staff and ensure the safety of the nursing process.

The invention realizes the automatic combination of the wheelchair and the bed through a series of automatic control. The bed and chair can be automatically separated and combined under the condition that nursing staff and users only need to touch the buttons. All movable parts of the wheelchair can be controlled separately It can also be adjusted as a whole. After the chair body returns to the bed, it can be charged automatically, without manually plugging and unplugging the charging device. Equipped with an anti-falling bed structure system, combined with a multi-faceted control system to achieve safe operation of the wheelchair. The independent operation function and intelligent function of the electric bed and chair integrated equipment are truly realized. Compared with the existing nursing bed and nursing chair, the present invention has the following advantages:

1. The bed and chair separate and combine functions are automated, and the bed and chair are combined with an anti-pinch function.

2. After the bed and chair are combined, the charging is automatic, and the bed can be charged externally.

3. The chair body has a single part and multiple parts, and the overall adjustment is automatic.

4. Automatic positioning of bed entry.

5. The wheelchair has a lifting function, which can improve the convenience of users, adapt to the comfort of users of different heights, and the convenience of accompaniment in the state of the escort's wheelchair. At the same time, the complexity of the bed can be reduced.

6. After the armrests are flattened, the carrying capacity is strengthened (the bed surface is made wider and more comfortable).

7. Using ordinary wheelchair chassis, non-AGV wheels, our wheels can be larger, and the ability to overcome obstacles is stronger, which can meet the needs of outdoor use, and the cost is lower.

8. The back of the bed and chair is integrated and flipped.

9. The chair cushion, mattress chute and buckle structure can be quickly disassembled.

Other configurations and operations of the wheelchair bed 001 according to the embodiment of the present invention are known to those of ordinary skill in the art, and will not be described in detail here.

In the wheelchair bed 001 of the embodiment of the present invention, various embodiments can be combined through the arrangement of the above-mentioned structure.

Example 1

The wheelchair bed 001 includes a bed body 200 and a wheelchair 100 that can be combined and separated. The bed body 200 includes a bed body 210 and a bed back 220. The bed body 210 has a containing cavity 210a, and the horizontal side of the containing cavity 210a has an inlet and outlet 210b. The bed back 220 is angle-adjustably connected to the bed body 210, and the bed back 220 is located on the side of the bed body 210 away from the inlet and outlet 210b. The wheelchair 100 can travel from the entrance and exit 210b to the accommodating cavity 210a to be combined with the bed body 200, and it is convenient for the wheelchair 100 to enter or leave the accommodating cavity 210a through the entrance and exit 210b.

The wheelchair 100 includes a seat 10, a wheelchair back 40 and a lower leg plate 50. The wheelchair back 40 and the lower leg plate 50 are rotatably connected to the front and rear sides of the seat 10. The wheelchair back 40 and the lower leg plate 50 can share a driving source and rotate in parallel. The wheelchair back 40 and the lower leg plate 50 can also have independent drive sources respectively. The wheelchair back 40 is driven to rotate by the backrest driving member 44, and the lower leg plate 50 is driven by the lower leg plate driving member. 51 drive rotation.

In Embodiment 1, the wheelchair 100 is provided with an armrest 20 and a footrest 60, the armrest 20 is rotatably connected to the seat 10, and the armrest 20 is a manually rotating part. The foot pedal 60 is fixedly connected to the lower leg plate 50, or the leg pedal 60 is detachably inserted into the lower leg plate 50.

Wherein, the bed back 220 on the bed body 210 does not have a rotation driving structure. When the bed back 220 and the wheelchair back 40 are combined, the back driver 44 drives the wheelchair back 40 to rotate, and the wheelchair back 40 drives the bed back 220 to rotate.

Example 2

The wheelchair 100 includes a seat 10, a wheelchair back 40 and a lower leg plate 50. The wheelchair back 40 is rotatably connected to the rear side of the seat 10, and the wheelchair back 40 is driven to rotate by a back driving member 44. The lower leg plate 50 is rotatably connected to the front side of the seat 10, the lower leg plate 50 is not connected to any driving source, and the lower leg plate 50 is manually rotated.

In the second embodiment, the wheelchair 100 is provided with an armrest 20 and a footrest 60, the armrest 20 is rotatably connected to the seat 10, and the armrest 20 is driven to rotate by the backrest driving member 44. The foot pedal 60 is fixedly connected to the lower leg plate 50, or the leg pedal 60 is detachably inserted into the lower leg plate 50.

Example 3

The wheelchair 100 includes a seat 10, a wheelchair back 40, a lower leg plate 50, an armrest 20, and a footrest 60. The wheelchair back 40 and the lower leg plate 50 are rotatably connected to the front and rear sides of the seat 10, and two armrests 20 are rotatably connected to the seat. On the left and right sides of 10, the foot pedal 60 is rotatably connected to the front side of the lower leg plate 50.

Wherein, the wheelchair back 40 and the lower leg plate 50 respectively have independent driving sources, the wheelchair back 40 is driven to rotate by the backrest driving member 44, and the lower leg plate 50 is driven to rotate by the lower leg plate driving member 51. Among them, the foot pedal 60 and the lower leg plate 50 rotate in conjunction. The two armrests 20 are driven to rotate by the armrest lifting device 30, and the two armrests 20 are a linked rotation structure.

The bed back 220 is provided with a mating part 221, and the wheelchair back 40 is provided with a movable locking member 41. The locking member 41 is connected with the armrest lifting device 30 to move synchronously with the armrest 20. When the armrest 20 is in a horizontal state, the locking member 41 cooperates with When the armrest 20 is in a vertical state, the locking member 41 is separated from the mating portion 221.

In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific feature, structure, material or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention . In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

A wheelchair bed, characterized in that it comprises a bed body and a wheelchair that can be combined and separated, wherein:

The bed body includes a bed body and a bed body back, the bed body has an accommodating cavity, and the horizontal side of the accommodating cavity has an inlet and outlet, and the bed backrest angle is adjustable and connected to the bed body;

The wheelchair can travel from the entrance and exit into the accommodating cavity to be combined with the bed body, the wheelchair includes a chair seat and a wheelchair backrest, and the wheelchair backrest is rotatably connected to the chair seat, The wheelchair backrest and the bed backrest can be combined and separated. When the wheelchair backrest is combined with the bed backrest, the angle can be adjusted synchronously.
The wheelchair bed according to claim 1, wherein the backrest of the bed body is rotatably connected to the bed body, and the wheelchair further comprises a backrest driving member connected to the backrest of the wheelchair; wherein,

When the bed backrest and the wheelchair backrest are not combined, the backrest driving member drives the wheelchair backrest to rotate;

When the bed backrest is combined with the wheelchair backrest, the backrest driving member drives the wheelchair backrest to rotate, and the wheelchair backrest drives the bed backrest to rotate.
The wheelchair bed according to claim 2, wherein the wheelchair further comprises: a lower leg plate, the lower leg plate is rotatably connected to a side of the chair seat away from the wheelchair backrest, and the wheelchair further includes For the lower leg plate driving member that drives the lower leg plate to rotate, the lower leg plate driving member and the backrest driving member are independent of each other.
The wheelchair bed according to claim 3, wherein the wheelchair further comprises: an armrest and an armrest lifting device, the armrest is rotatably connected to at least one side of the chair seat, and the armrest lifting device is connected to the chair The seat and the armrest, so that the armrest and the wheelchair backrest rotate independently of each other.
The wheelchair bed according to claim 4, wherein there are two armrests, and the two armrests are connected on opposite sides of the seat, and the armrest lifting device includes a set of armrest driving components and There are two sets of turning components, the armrests on each side correspond to a set of turning components, the two sets of turning components are connected with the handrail driving assembly, and the armrests on both sides rotate in reverse synchronously.
The wheelchair bed according to claim 5, wherein each set of the turning assembly includes a fixing member arranged under the seat, a first rocker and a second rocker, one end of the first rocker The second rocker is hinged with the seat, the other end is hinged with the bottom of the armrest, the fixing part is fixed on the seat, one end of the second rocker is hinged with the fixing part, and the other end is hinged with the armrest The armrest drive assembly is configured to drive the first rocker to rotate around the hinged joint with the seat base and drive the second rocker to rotate in the same direction as the hinged joint with the fixed part Rotating, the first rocker and the second rocker are configured to jointly drive the armrest to flip outward to a horizontal state when they are rotated in a direction close to the seat, the first rocker and the second rocker The two rockers are configured to jointly drive the armrest to flip inward to a vertical state when rotated in a direction away from the chair seat.
The wheelchair bed according to claim 5 or 6, wherein the bed body is provided with first pads on opposite sides of the accommodating cavity, and the backrest of the bed body is located in the accommodating cavity. The two opposite sides are respectively provided with second backing plates, a first mating opening is defined between the first backing plate and the second backing plate on one side of the accommodating cavity, and between the two second backing plates Define the second mating port;

When the wheelchair is combined with the bed body, the two armrests are respectively fitted in the first fitting openings on both sides, and the chair seat, the armrests, and the lower leg plate are all connected to the first The backing plate is flush, the wheelchair backrest is fitted in the second matching opening, and the wheelchair backrest is flush with the second backing plate.
The wheelchair bed according to any one of claims 1-7, wherein a guide assembly for guiding the wheelchair in and out is provided between the wheelchair and the bed body.
The wheelchair bed according to claim 8, wherein the guide assembly includes guide rails arranged on opposite sides of the accommodating cavity and guide wheels arranged on opposite sides of the wheelchair.
The wheelchair bed according to any one of claims 4-7, wherein a matching portion is provided on the backrest of the bed body, a movable locking part is provided on the backrest of the wheelchair, and the locking part is connected to the backrest of the wheelchair. The armrest lifting device is connected to move synchronously with the armrest. When the armrest is in a horizontal state, the locking member cooperates with the matching portion, and when the armrest is in a vertical state, the locking member is disengaged from the matching portion.
The wheelchair bed according to claim 10, wherein the locking member is telescopically provided on the wheelchair backrest, the locking member is connected to the armrest drive assembly through a wire rope, and the armrest drive assembly drives the When the armrest is horizontal, the wire rope is used to pull the locking member to extend; the wheelchair backrest is also provided with a lock back spring, and when the wire rope is loose, the lock member is reset by the lock back spring.
The wheelchair bed according to claim 6, wherein the armrest drive assembly drives the first rocker to rotate through a connecting rod, one end of the connecting rod is hinged with the middle of the first rocker, and the other end is hinged to the middle of the first rocker. Hinged to the armrest drive assembly, the armrest drive assembly includes a push rod and two horizontally arranged rack rockers, the two rack rockers are meshed with gears, and the push rod is configured to drive therein One of the rack rockers moves horizontally or the gear rotates, and each of the rack rockers is hinged to one end of the connecting rod of the corresponding armrest.
The wheelchair bed according to any one of claims 3-7, wherein the wheelchair further comprises: a footrest, and the footrest is rotatably connected to the lower leg plate.
The wheelchair bed according to claim 13, characterized in that, the wheelchair further comprises: a foot pedal linkage, and the foot pedal linkage is respectively connected with the lower leg plate and the chair seat so as to be connected to the chair seat. When the lower leg plate rotates, the foot pedal is driven to move in linkage.
The wheelchair bed according to claim 14, wherein the pedal linkage is hinged to the pedal and the seat, and the pedal linkage is connected to the pedal and the seat. The lower leg plate and the chair seat construct a parallel four-bar linkage mechanism.
The wheelchair bed according to any one of claims 1-15, wherein an assembly opening is provided on the seat, and the wheelchair further comprises an upper leg plate rotatably fitted at the assembly opening, The upper leg plate can be rotated so that a part of it is located above the seat.
The wheelchair bed according to any one of claims 1-16, wherein the wheelchair further comprises a base, and the chair base is connected to the base in a liftable manner through a column, and when the column is raised to the highest At this time, the seat and the parts connected to the seat may be higher than the bed body.
The wheelchair bed according to any one of claims 1-17, wherein the wheelchair further comprises a traveling device, the traveling device includes a traveling motor, a driving wheel, and a steering wheel, and the driving motor is located in the driving device. Out of the wheel and connected with the driving wheel.
The wheelchair bed according to any one of claims 1-18, wherein the bed body further comprises a bottom plate, and the bottom plate is fixedly connected to the bed body and located at the bottom of the accommodating cavity.
The wheelchair bed according to any one of claims 1-19, further comprising a chair cushion, which is detachably connected to the chair cushion by at least one of a sliding buckle, a rotating buckle and a locking buckle. Said on the wheelchair.
The wheelchair bed according to any one of claims 4-7, wherein the armrest includes an armrest body, a cover, a carrier, a remote control, and a driving member, and the carrier is disposed on the armrest. In the internal cavity of the body, the armrest body is provided with an opening communicating with the internal cavity, the cover plate is used to close the opening, and when the cover plate is opened, the driving member can be triggered to drive the stage Move toward the opening to expose the remote control on the stage.
The wheelchair bed according to any one of claims 1-21, wherein the wheelchair is provided with an anti-pinch sensor where it is combined with the bed body.
The wheelchair bed according to claim 22, wherein the anti-pinch sensor is an elongated pressure sensor, and the plurality of anti-pinch sensors are arranged on opposite sides of the wheelchair.
The wheelchair bed according to any one of claims 1-23, wherein the bed body is provided with a charging seat, the wheelchair is provided with a charging head, and when the wheelchair is combined with the bed body , The charging head is connected to the charging base for charging.
The wheelchair bed according to any one of claims 1-24, wherein a navigation device is provided on the wheelchair, and the navigation device includes at least one of a camera and an ultrasonic sensor.