CN113925703A

CN113925703A - Wheelchair bed and nursing equipment

Info

Publication number: CN113925703A
Application number: CN202010675841.8A
Authority: CN
Inventors: 王振乾; 赵锡晋
Original assignee: Guangdong Bofang Zhongji Medical Technology Co ltd
Current assignee: Guangdong Bofang Zhongji Medical Technology Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2022-01-14

Abstract

The invention discloses a wheelchair bed and nursing equipment, the wheelchair body includes: the bed body comprises a bed head and two bed tails connected with the bed head, wherein an opening is formed in one side, close to the bed tail, of the bed head, the two bed tails are respectively arranged on two sides of the opening, a passageway is defined by the two bed tails and the opening together, and the passageway is used for the wheelchair to enter and exit and is matched with an unfolded wheelchair; and at least one of the two bed tails is connected with the bed head through the link mechanism, and the link mechanism is used for enabling the bed tail to move to the outer side edge close to the bed head, and the side edge, far away from the passageway, of the bed tail is kept parallel to the outer side edge of the bed head in the moving process. The bed tail is connected with the bed head through the connecting rod mechanism, the bed tail is simple in opening mode and convenient to operate, the occupied space in the opening process is small, the bed tail can be suitable for being opened in a narrow space and is not easily influenced by obstacles, the wheelchair can be moved out from the side part of the bed body, and the wheelchair can be moved out more conveniently.

Description

Wheelchair bed and nursing equipment

Technical Field

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

Background

When a patient is hospitalized in a hospital, the patient needs to go out and move to and from different examination rooms. For the patient with inconvenient movement, the patient leaves the room or ward and can only be helped by the wheelchair, but the patient needs to consume more manpower in the process of transferring the patient from the sickbed to the wheelchair, and the patient can be damaged secondarily. Therefore, more and more bed-chair integrated equipment (wheelchair beds) are available in the market at present to solve the problem of secondary injury of patients in the moving process.

When the room space is enough, the wheelchair is generally moved out from the bed directly from the bed tail in the process of coming out of the bed, but the wheelchair cannot be moved out from the bed tail under the condition that the space at the bed tail of the wheelchair bed is insufficient, so that the bed frame is required to be capable of moving laterally, and the wheelchair is required to be moved out from the bed laterally.

The existing wheelchair on the market is mainly moved from the side direction of the bed body in two modes, one mode is that the bed body is made into a detachable mode through screws or bolts, the scheme saves space, but the operation is troublesome; the other is that a hinge is added in the middle of the bed body, so that the bed tail can be bent along the hinge, the use is relatively convenient, but the bed tail can form a fan-shaped space along the angular hinge when moving, no obstacle can be arranged in the space, and the bed tail is not suitable for being opened in a narrow space.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a wheelchair bed, which aims to solve the problems that the bed tail in the wheelchair bed is inconvenient to open and is easily influenced by space and obstacles.

The invention also aims to provide nursing equipment applying the wheelchair bed.

According to an embodiment of the present invention, a wheelchair bed includes: the wheelchair bed comprises a bed body and a bed frame, wherein the bed body comprises a bed head and two bed tails connected with the bed head, an opening is formed in one side, close to the bed tail, of the bed head, the two bed tails are respectively arranged on two sides of the opening, a passageway is defined by the two bed tails and the opening together, and the passageway is used for the wheelchair to enter and exit and is matched with the unfolded wheelchair; the linkage mechanism is used for enabling the bed tail to move to be close to the outer side edge of the bed head, and in the moving process, the side edge, far away from the passageway, of the bed tail is kept parallel to the outer side edge of the bed head.

According to the wheelchair bed provided by the embodiment of the invention, the bed tail is connected with the bed head through the connecting rod mechanism, so that the bed tail can be translated to the side part of the bed head and is parallel to the side part of the bed head in the opening process of the bed tail.

In some embodiments, the linkage mechanism has one end pivotally connected to the foot and another end pivotally connected to the head.

In some embodiments, the linkage mechanism comprises: one end of the first connecting rod is pivotally connected with the bed tail, and the other end of the first connecting rod is pivotally connected with the bed head; one end of the second connecting rod is pivotally connected with the bed tail, and the other end of the second connecting rod is pivotally connected with the bed head; wherein the first connecting rod, the second connecting rod, the bed head and the bed tail form a parallelogram structure together.

Optionally, the first link has a first hinge point and a second hinge point, and the second link has a third hinge point and a fourth hinge point; wherein the first hinge point and the third hinge point are arranged on one side of the bed head close to the aisle, and the first hinge point and the third hinge point are arranged at intervals along the length direction of the bed head; the second hinge point and the fourth hinge point are arranged on one side of the bed tail far away from the aisle, and the second hinge point and the fourth hinge point are arranged at intervals along the length direction of the bed tail.

Optionally, the second hinge point is arranged close to a side of the bed tail far away from the aisle, relative to the fourth hinge point; the third hinge point is disposed opposite to the first hinge point on a side of the head of the bed near the aisle.

Optionally, the second hinge point is arranged on a side of the bed tail close to the bed head opposite to the fourth hinge point; the third hinge point is arranged opposite to the first hinge point and close to one side of the bed head close to the bed tail.

In some embodiments, the first link comprises a first long rod portion and a first short rod portion connected to form an obtuse angle therebetween; the second connecting rod comprises a second long rod part and a second short rod part which are connected, and an obtuse angle is formed between the second long rod part and the second short rod part; wherein the second long rod part can be arranged close to the first long rod part when the bed tail is not moved.

In some embodiments, the first hinge point is provided on the first long rod portion and the second hinge point is provided on the first short rod portion; the third hinge point is arranged on the second long rod part, and the fourth hinge point is arranged on the second short rod part.

In some embodiments, the wheelchair bed further comprises: two guardrails are arranged on two sides of the length direction of the bed head.

A care apparatus according to an embodiment of the present invention includes: a wheelchair bed according to any of the preceding paragraphs; a wheelchair having a use condition in which a seat surface is extendable, the wheelchair in the use condition being fitted within the aisle and the wheelchair in a non-use condition being removable from the foot.

According to the nursing bed equipment provided by the embodiment of the invention, the connecting rod mechanism is arranged in the wheelchair bed and is connected with the bed tail and the bed head, so that the bed tail can be translated to the side part of the bed head and is parallel to the side part of the bed head in the opening process of the bed tail, the bed tail opening mode is simple, the operation is convenient, the occupied space in the opening process is small, the space can be saved, meanwhile, the bed tail can be suitable for being opened in a narrow space and is not easily influenced by obstacles, the wheelchair can be moved out from the side part of the bed body, and the wheelchair can be moved out more conveniently.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic perspective view of a wheelchair bed according to an embodiment of the present invention;

FIG. 2 is a bottom view of the wheelchair bed of the present invention;

FIG. 3 is a schematic view showing the process of opening the bed end of the wheelchair bed according to the embodiment of the present invention;

fig. 4 is a schematic perspective view of a nursing device in an embodiment of the present invention.

Reference numerals:

100. a wheelchair bed;

10. a bed body;

11. a bed head; 111. an aisle; 112. a support member; 113. an opening; 12. a bed tail; 101. a support leg;

20. a link mechanism;

21. a first link; 2101. a first hinge point; 2102. a second hinge point; 211. a first long rod part; 212. a first short rod part;

22. a second link; 2201. a third hinge point; 2202. a fourth hinge point; 221. a second long rod part; 222. a second short rod part;

30. a backrest; 40. a guardrail;

1000. a care device; 200. a wheelchair; 201. a chair surface.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A wheelchair bed 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, a wheelchair bed 100 according to an embodiment of the present invention includes: a bed body 10 and a connecting rod mechanism 20.

The bed body 10 comprises a bed head 11 and two bed tails 12 connected with the bed head 11, wherein one side of the bed head 11 close to the bed tails 12 is provided with an opening 113, the two bed tails 12 are respectively arranged at two sides of the opening 113, and the two bed tails 12 and the opening 113 jointly define a passageway 111, and the passageway 111 is used for the wheelchair 200 to enter and exit and is matched with the unfolded wheelchair 200. The bed body 10 is matched with the wheelchair 200 through the passageway 111, and after the wheelchair 200 is unfolded, the seat surface 201 of the wheelchair 200, the bed head 11 and the bed tail 12 form the bed surface of the bed body 10.

At least one of the two bedtails 12, is connected to the head of the bed 11 by a linkage 20, the linkage 20 being adapted to move the bedtail 12 close to the outer side of the head of the bed 11, and the side of the bedtail 12 remote from the aisle 111 being parallel to the outer side of the head of the bed 11 during movement. That is, the linkage 20 allows the foot 12 to move in a translational motion to the outside of the head 11 so that the foot 12 is not affected by overhead spaces or obstructions during opening. And because the outside limit of the tailstock 12 is parallel with the outside limit of the bed head 11, therefore the space that the tailstock 12 takes up in the horizontal direction is less, is applicable to opening the tailstock 12 in narrow and small space, also is difficult to lead to the tailstock 12 can't open because of the restriction of space size and barrier in the horizontal direction simultaneously, make the open mode of the tailstock 12 simple, also more convenient through link mechanism 20. After the bed tail 12 is opened, an outlet is formed at the side part of the bed body 10, so that the wheelchair 200 can be moved out from the outlet when being moved out, and the wheelchair 200 can be overcome by overcoming the problem that the wheelchair 200 cannot be moved out due to insufficient space in the length direction of the bed body 10 without being moved out through the passageway 111.

It should be noted that one of the two bed tails 12 can be a bed tail 12 connected to the bed head 11 through a link mechanism 20, i.e. one side of the bed body 10 is opened to form an outlet, so as to realize the side-out of the wheelchair 200. The two bed tails 12 can also be connected with the bed head 11 through the connecting rod mechanism 20, so that outlets can be formed on two sides of the bed body 10, the outlet on one side can be opened as required to move the wheelchair 200 out, the wheelchair 200 can be moved out under more scenes, and the adaptability is stronger.

According to the wheelchair bed 100 provided by the embodiment of the invention, the bed tail 12 is connected with the bed head 11 through the link mechanism 20, so that the bed tail 12 can be translated to the side part of the bed head 11 and is parallel to the side part of the bed head 11 in the opening process of the bed tail 12, the opening mode of the bed tail 12 is simple, the operation is convenient, the occupied space in the opening process is small, the space can be saved, meanwhile, the bed tail 12 can be suitable for being opened in a narrow space and is not easily influenced by obstacles, the wheelchair 200 can be moved out from the side part of the bed body 10, and the wheelchair 200 can be moved out more conveniently.

In some embodiments, the linkage 20 is pivotally connected at one end to the foot 12 and at the other end to the head 11.

In some embodiments, as shown in fig. 2 and 3, the linkage mechanism 20 includes: a first connecting rod 21, one end of the first connecting rod 21 is pivotally connected with the bed tail 12, and the other end is pivotally connected with the bed head 11; a second connecting rod 22, one end of the second connecting rod 22 is pivotally connected with the bed tail 12, and the other end is pivotally connected with the bed head 11; wherein, the first connecting rod 21, the second connecting rod 22, the bed head 11 and the bed tail 12 form a parallelogram structure together. That is, as shown in fig. 3, by virtue of the characteristics of the parallelogram structure, the bed tail 12 moves along an arc-shaped track under the driving of the link mechanism 20, and the motion track is simple and has better stability. When the tailstock 12 is opened, the first connecting rod 21 and the second connecting rod 22 rotate relative to the bed head 11, the tailstock 12 leaves the position A in the figure 2, the first connecting rod 21 and the second connecting rod 22 always enable the tailstock 12 to keep translational motion and be parallel to the bed head 11 in the rotating process, and the bed head 11 is located at the side part of the bed head 11 when the tailstock moves to the preset position B (the dotted line part in the figure 3).

Alternatively, as shown in fig. 2, the first link 21 has a first hinge point 2101 and a second hinge point 2102, and the second link 22 has a third hinge point 2201 and a fourth hinge point 2202; wherein, the first hinge point 2101 and the third hinge point 2201 are arranged at one side of the bedside 11 close to the aisle 111, and the first hinge point 2101 and the third hinge point 2201 are arranged at intervals along the length direction of the bedside 11; the second hinge point 2102 and the fourth hinge point 2202 are provided on a side of the bed tail 12 away from the aisle 111, and the second hinge point 2102 and the fourth hinge point 2202 are provided at intervals in a length direction of the bed tail 12. It can be understood that, in the formed parallelogram structure, the fixed connecting rod portions (i.e. the connecting line of the first hinge point 2101 and the third hinge point 2201, and the connecting line of the second hinge point 2102 and the fourth hinge point 2202) are arranged along the length direction of the bed body 10, so that the rotating angle of the bed tail 12 is greater than 90 degrees in the process of driving the bed tail 12 to move along the arc-shaped track by the first connecting rod 21 and the second connecting rod 22, and the bed tail 12 can be ensured to be translated to the side of the bed head 11.

Alternatively, as shown in fig. 2, the side of the foot 12 abuts against the side of the head 11, that is, the fitting between the foot 12 and the head 11 is tight, which can improve the overall comfort of the bed 10. The second hinge point 2102 is arranged opposite the fourth hinge point 2202 near the side of the bed tail 12 remote from the aisle 111; the third hinge point 2201 is located close to the side of the bed head 11 close to the aisle 111 relative to the first hinge point 2101, it can be understood that in the width direction of the bed 10, for example, in the left-right direction, the second hinge point 2102 and the fourth hinge point 2202 are spaced apart, the second hinge point 2102 is closer to the left side of the bed tail 12, the third hinge point 2201 is also spaced apart from the first hinge point 2101, and the third hinge point 2201 is closer to the inner side of the bed head 11, in this way, when the bed tail 12 is not opened, the supporting surface of the link mechanism 20 with the bed head 11 and the bed tail 12 is larger and the stability is better.

In some embodiments, as shown in FIG. 2, the second hinge point 2102 is disposed opposite the fourth hinge point 2202 on a side of the foot 12 proximate the head 11; the third hinge point 2201 is arranged close to the side of the head 11 close to the foot 12 relative to the first hinge point 2101. That is, in the lengthwise direction of the bed 10, for example, the front-rear direction, the second hinge point 2102 is located at the rear side of the fourth hinge point 2202, and the third hinge point 2201 is located at the front side of the first hinge point 2101, in such a manner that the outer side of the foot 12 moves in parallel with the outer side of the bed head 11 when the first and

second links

21 and 22 rotate.

In some embodiments, as shown in fig. 2, the first link 21 includes a first long link portion 211 and a first short link portion 212 connected to each other, and an obtuse angle is formed between the first long link portion 211 and the first short link portion 212; the second link 22 includes a second long rod part 221 and a second short rod part 222 connected to each other, and an obtuse angle is formed between the second long rod part 221 and the second short rod part 222; wherein the second long rod part 221 can be disposed closely to the first long rod part 211 when the bed tail 12 is not moved. In this way, the first long rod part 211 and the first short rod part 212 enable the first connecting rod 21 to form a similar L shape, and the second long rod part 221 and the second short rod part 222 enable the second connecting rod 22 to form a similar L shape, so that the overall size is small while the reliable connection is ensured, and the space can be saved.

In some embodiments, as shown in fig. 2, a first hinge point 2101 is provided on first long rod portion 211 and a second hinge point 2102 is provided on first short rod portion 212; a third hinge point 2201 is provided on the second long lever part 221, and a fourth hinge point 2202 is provided on the second short lever part 222.

In some embodiments, as shown in fig. 1, the wheelchair bed 100 further includes: the backrest 30 is arranged at one end of the bed head 11 far away from the bed tail 12, and the backrest 30 is arranged to facilitate a user to lean on the wheelchair bed 100, so that convenience is improved.

In some embodiments, as shown in fig. 1, the wheelchair bed 100 further includes: the two guard rails 40, the two guard rails 40 are provided at both sides of the length direction of the head of bed 11, so that a user can be prevented from falling off the wheelchair bed 100, and the safety of the user can be improved.

In some embodiments, as shown in fig. 1, the head 11 is provided with a support member 112, the support member 112 extends along the length direction of the bed 10, and the lower portion of the foot 12 abuts against the support member 112, that is, since the foot 12 is not fixedly connected to the head 11 but movably connected to the head 11 through the link mechanism 20, the support member 112 can provide a supporting function for the foot 12, so as to improve the reliability and stability of the connection between the foot 12 and the head 11, and improve the overall strength of the wheelchair bed 100, and the foot 12 is separated from the support member 112 during the translation of the foot 12 to the side of the head 11.

In some embodiments, as shown in fig. 1, the support 112 is wedge-shaped, and the support 112 gradually decreases in width in a direction away from the aisle 111.

In some embodiments, as shown in fig. 1, the head 11 and the foot 12 are provided with legs 101, and the legs 101 are used for supporting the head 11 and the foot 12.

One embodiment of the wheelchair bed 100 of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, a wheelchair bed 100 includes: bed 10, link mechanism 20, back 30, guardrail 40.

The bed body 10 comprises a bed head 11 and two bed tails 12 connected with the bed head 11, wherein one side of the bed head 11 close to the bed tails 12 is provided with an opening 113, the two bed tails 12 are respectively arranged at two sides of the opening 113, and the two bed tails 12 and the opening 113 jointly define a passageway 111, and the passageway 111 is used for the wheelchair 200 to enter and exit and is matched with the unfolded wheelchair 200.

A foot 12 is connected to the head 11 through a linkage 20, and the linkage 20 is used for driving the foot 12 to translate to the side of the head 11, and making the foot 12 parallel to the side of the head 11.

The link mechanism 20 includes: a first connecting rod 21, one end of the first connecting rod 21 is pivotally connected below the bed tail 12, and the other end is pivotally connected below the bed head 11; a second connecting rod 22, one end of the second connecting rod 22 is pivotally connected below the bed tail 12, and the other end is pivotally connected below the bed head 11; wherein, the first connecting rod 21, the second connecting rod 22, the bed head 11 and the bed tail 12 form a parallelogram structure together.

First link 21 has a first hinge point 2101 and a second hinge point 2102, and second link 22 has a third hinge point 2201 and a fourth hinge point 2202; wherein, the first hinge point 2101 and the third hinge point 2201 are arranged at one side of the bedside 11 close to the aisle 111, and the first hinge point 2101 and the third hinge point 2201 are arranged at intervals along the length direction of the bedside 11; the second hinge point 2102 and the fourth hinge point 2202 are provided on a side of the bed tail 12 away from the aisle 111, and the second hinge point 2102 and the fourth hinge point 2202 are provided at intervals in a length direction of the bed tail 12.

The side of the foot 12 rests on the side of the head 11, the second hinge point 2102 being arranged close to the side of the foot 12 remote from the aisle 111, relative to the fourth hinge point 2202; the third hinge point 2201 is arranged close to the side of the head of bed 11 close to the aisle 111 with respect to the first hinge point 2101.

The first link 21 includes a first long rod portion 211 and a first short rod portion 212 connected to each other, and an obtuse angle is formed between the first long rod portion 211 and the first short rod portion 212; the second link 22 includes a second long rod part 221 and a second short rod part 222 connected to each other, and an obtuse angle is formed between the second long rod part 221 and the second short rod part 222; wherein the second long rod part 221 may be disposed closely to the first long rod part 211.

The backrest 30 is provided at an end of the head 11 remote from the foot 12, and the backrest 30 is provided to facilitate the user leaning on the wheelchair bed 100, thereby improving convenience.

The two guard rails 40 are provided on both sides of the head of bed 11 in the longitudinal direction, so that a user can be prevented from falling off the wheelchair bed 100, and the safety of the user can be improved.

The head 11 is provided with a supporting member 112, the supporting member 112 extends along the length direction of the bed 10, and the lower part of the bed tail 12 is stopped against the supporting member 112. The support 112 is wedge-shaped, the support 112 gradually decreasing in width in a direction away from the aisle 111.

The bed head 11 and the bed tail 12 are both provided with legs 101, and the legs 101 are used for supporting the bed head 11 and the bed tail 12.

A care apparatus 1000 according to an embodiment of the invention will be described below with reference to the drawings.

As shown in fig. 4, a care apparatus 1000 according to an embodiment of the present invention includes: a wheelchair bed 100 and a wheelchair 200.

The wheelchair bed 100 is a wheelchair bed 100 according to any of the preceding; the wheelchair 200 has a use position in which the seat 201 is extended, the seat 201 fits in the aisle 111 in the use position of the wheelchair 200, and the wheelchair 200 is removable from the bed tail 12 in the non-use position.

According to the nursing device 1000 provided by the embodiment of the invention, the connecting rod mechanism 20 is arranged in the wheelchair bed 100, and the connecting rod mechanism 20 is connected with the bed tail 12 and the bed head 11, so that the bed tail 12 can be translated to the side part of the bed head 11 and is parallel to the side part of the bed head 11 in the opening process of the bed tail 12, the opening mode of the bed tail 12 is simple, the operation is convenient, the occupied space in the opening process is small, the space can be saved, meanwhile, the bed tail 12 can be suitable for being opened in a narrow space and is not easily influenced by obstacles, the wheelchair 200 can be moved out from the side part of the bed body 10, and the wheelchair 200 can be moved out more conveniently.

Other constructions and the like and operation of the wheelchair bed 100 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 herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wheelchair bed comprising:

the wheelchair bed comprises a bed body and a bed frame, wherein the bed body comprises a bed head and two bed tails connected with the bed head, an opening is formed in one side, close to the bed tail, of the bed head, the two bed tails are respectively arranged on two sides of the opening, a passageway is defined by the two bed tails and the opening together, and the passageway is used for the wheelchair to enter and exit and is matched with the unfolded wheelchair;

the linkage mechanism is used for enabling the bed tail to move to be close to the outer side edge of the bed head, and the side edge, far away from the passageway, of the bed tail is parallel to the outer side edge of the bed head in the moving process.

2. The wheelchair bed of claim 1 wherein,

one end of the link mechanism is pivotally connected with the bed tail, and the other end of the link mechanism is pivotally connected with the bed head.

3. The wheelchair bed of claim 1 wherein the linkage mechanism comprises:

one end of the first connecting rod is pivotally connected with the bed tail, and the other end of the first connecting rod is pivotally connected with the bed head;

one end of the second connecting rod is pivotally connected with the bed tail, and the other end of the second connecting rod is pivotally connected with the bed head; wherein the content of the first and second substances,

the first connecting rod, the second connecting rod, the bed head and the bed tail form a parallelogram structure together.

4. The wheelchair bed of claim 3 wherein,

the first link having a first hinge point and a second hinge point, the second link having a third hinge point and a fourth hinge point; wherein the content of the first and second substances,

the first hinge point and the third hinge point are arranged on one side of the bed head close to the aisle, and the first hinge point and the third hinge point are arranged at intervals along the length direction of the bed head;

the second hinge point and the fourth hinge point are arranged on one side of the bed tail far away from the aisle, and the second hinge point and the fourth hinge point are arranged at intervals along the length direction of the bed tail.

5. The wheelchair bed of claim 4 wherein,

the second hinge point is arranged close to one side of the bed tail, which is far away from the aisle, relative to the fourth hinge point;

the third hinge point is disposed opposite to the first hinge point on a side of the head of the bed near the aisle.

6. The wheelchair bed of claim 4 wherein,

the second hinge point is arranged opposite to the fourth hinge point and close to one side of the bed tail close to the bed head;

the third hinge point is arranged opposite to the first hinge point and close to one side of the bed head close to the bed tail.

7. The wheelchair bed of claim 4 wherein,

the first connecting rod comprises a first long rod part and a first short rod part which are connected, and an obtuse angle is formed between the first long rod part and the first short rod part;

the second connecting rod comprises a second long rod part and a second short rod part which are connected, and an obtuse angle is formed between the second long rod part and the second short rod part; wherein the second long rod part can be arranged close to the first long rod part when the bed tail is not moved.

8. The wheelchair bed of claim 7 wherein,

the first hinge point is arranged on the first long rod part, and the second hinge point is arranged on the first short rod part;

the third hinge point is arranged on the second long rod part, and the fourth hinge point is arranged on the second short rod part.

9. The wheelchair bed of claim 1 further comprising:

two guardrails are arranged on two sides of the length direction of the bed head.

10. A care apparatus, comprising:

a wheelchair bed according to any one of claims 1 to 9;

a wheelchair having a use condition in which a seat surface is extendable, the wheelchair in the use condition being fitted within the aisle and the wheelchair in a non-use condition being removable from the foot.