CN218106256U

CN218106256U - Multi-connecting-rod linkage structure of nursing bed

Info

Publication number: CN218106256U
Application number: CN202022597803.3U
Authority: CN
Inventors: 王忠胜; 蒋进良; 李家荣; 周守雄
Original assignee: Foshan Dahao Medical Technology Co ltd
Current assignee: Foshan Dahao Medical Technology Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2022-12-23
Anticipated expiration: 2030-11-11

Abstract

The utility model provides a nursing bed multi-connecting-rod linkage structure, relating to the field of nursing equipment. A nursing bed multi-connecting-rod linkage structure comprises a bed body component and a linkage component, wherein the bed body component comprises a head bracket, a backrest frame, a frame main body, a foot bracket and a pedal frame which are sequentially connected in a rotating mode, and a leg bracket which is connected with the frame main body in a rotating mode is arranged on the frame main body. The linkage assembly comprises a first connecting rod mechanism, a second connecting rod mechanism and a third connecting rod mechanism, the first connecting rod mechanism is arranged between the frame main body and the head bracket, the second connecting rod mechanism is arranged between the backrest frame and the leg bracket, the second connecting rod mechanism is further connected with the foot bracket, and the third connecting rod mechanism is arranged between the foot bracket and the pedal frame. The second connecting rod mechanism is connected with the first connecting rod mechanism, and the second connecting rod mechanism is connected with a push rod for driving the second connecting rod mechanism. The utility model discloses can only utilize a actuating mechanism to realize that the nursing bed lifts the back of the body, lifts the leg, stands up the function such as.

Description

Multi-connecting-rod linkage structure of nursing bed

Technical Field

The utility model relates to a nursing equipment field particularly, relates to a many connecting rods linkage of nursing bed.

Background

Nursing beds are generally power beds, are divided into electric or manual nursing beds, are designed according to the bedridden life habits and treatment needs of patients, can be accompanied by family members, have a plurality of nursing functions and operating buttons, and are safe to use. Such as weight monitoring, back taking and dining, regular turnover alarming, bedsore prevention, moving transportation, rest, rehabilitation (passive movement and standing), infusion administration, related prompting and other functions, and can prevent the patient from falling down. The rehabilitation nursing bed can be used independently, and can also be matched with treatment or rehabilitation equipment. The turnover nursing bed is generally not more than 90cm wide, and a single-layer bed is convenient for medical care observation and patrol and operation and use of family members. Can be used for patients, severely disabled people, the elderly and healthy people in hospitalization or in home treatment, rehabilitation and rest, and has various sizes and forms. In the medical appliance industry, particularly the nursing bed production industry, a variety of nursing beds are available. The common nursing bed functions include back lifting, leg lifting and head supporting, wherein the back lifting and leg lifting are basic functions. As the common nursing beds in the market operate one motor and operate a plurality of motors, the cost is high, and the failure rate is increased due to the plurality of motors.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many connecting rods linkage structure of nursing bed, it can only utilize a actuating mechanism to realize that nursing bed lifts the back of the body, lifts the leg, stands up the function such as, has avoided motor of traditional nursing bed action, and a plurality of motors of a plurality of actions cause the cost to be on the high side, and many motors have promoted fault rate scheduling problem.

The embodiment of the utility model is realized like this:

the embodiment of the application provides a nursing bed multi-connecting-rod linkage structure which comprises a bed body component and a linkage component, wherein the bed body component comprises a head bracket, a backrest frame, a frame main body, a foot bracket and a pedal frame which are sequentially and rotatably connected, and the frame main body is provided with a leg bracket rotatably connected with the frame main body;

the linkage assembly comprises a first connecting rod mechanism, a second connecting rod mechanism and a third connecting rod mechanism, and the first connecting rod mechanism is arranged between the frame main body and the head bracket and is used for driving the head bracket to rotate;

the second connecting rod mechanism is arranged between the backrest frame and the leg bracket and is respectively used for driving the backrest frame and the leg bracket to rotate;

the second connecting rod mechanism is also connected with the foot bracket and is used for driving the foot bracket to rotate;

the third connecting rod mechanism is arranged between the foot bracket and the pedal frame, so that the third connecting rod mechanism can be driven to drive the pedal frame to rotate when the foot bracket rotates;

the second connecting rod mechanism is connected with the first connecting rod mechanism and used for driving the first connecting rod mechanism;

the second link mechanism is connected with a push rod for driving the second link mechanism.

The utility model discloses an in some embodiments, above-mentioned first link mechanism includes long connection piece, head holds in the palm short connection piece and the even piece of L type motion, long connection piece one end is connected with the rotation of head bracket through first connection subplate, the both sides that are located the long connection piece other end are provided with head respectively and hold in the palm short connection piece and the even piece of L type motion, head holds in the palm short connection piece and the even piece of L type motion and rotates with long connection piece respectively and be connected, the free end and the push rod one end rotation of head support short connection piece are connected, the even piece of L type motion is connected with the frame main part rotation.

The utility model discloses an in some embodiments, above-mentioned second link mechanism includes that adjustable shelf and leg hold in the palm short connection piece, and adjustable shelf one end is connected through the second and is rotated with the back frame and be connected, and the other end holds in the palm short connection piece with the leg and rotates to be connected, and the leg holds in the palm short connection piece and rotates with the leg bracket to be connected, is provided with the third between adjustable shelf and the foot bracket and connects the subplate, and the third is connected subplate one end and is fixed with the foot bracket, and the other end rotates with the adjustable shelf to be connected.

The utility model discloses an in some embodiments, be provided with the recess on the above-mentioned adjustable shelf, the push rod can stretch into in the recess, makes the push rod remove and can drive the adjustable shelf motion.

In some embodiments of the present invention, the third link mechanism includes a double-curved connecting piece, and two ends of the double-curved connecting piece are respectively connected to the pedal frame and the pedal bracket in a rotating manner.

In some embodiments of the present invention, a fourth connecting sub-piece is disposed between the double-bent connecting piece and the pedal frame, and the double-bent connecting piece is rotatably connected to the fourth connecting sub-piece.

In some embodiments of the present invention, a fifth connecting sub-piece is disposed between the two bent connecting pin brackets, and the two bent connecting pieces are rotatably connected to the fifth connecting sub-piece.

In some embodiments of the present invention, the multi-link linkage structure comprises two linkage assemblies, and the two linkage assemblies are symmetrically disposed on two sides of the bed assembly.

In some embodiments of the present invention, the two linkage assemblies share the same push rod.

The utility model discloses an in some embodiments, above-mentioned many connecting rods linkage still includes actuating mechanism, and actuating mechanism includes the hydraulic stem, and the hydraulic stem both ends rotate the middle part that is connected to frame main part and push rod respectively.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

the utility model provides a nursing bed multi-connecting-rod linkage structure, including bed body subassembly and linkage subassembly, bed body subassembly is the essential element of nursing bed, and the various actions of bed body subassembly are realized to above-mentioned linkage group mainly used. The bed body component comprises a head bracket, a backrest frame, a frame main body, a foot bracket and a pedal frame which are sequentially connected in a rotating manner, wherein the frame main body is provided with a leg bracket which is connected with the frame main body in a rotating manner. Wherein, the head bracket is used for supporting the head of a user, and the backrest frame is used for leaning on the back of the user. The main frame of the vehicle body is used for bearing a part of the body part of a patient and also used as the main structure of the nursing bed. The leg bracket is used for supporting the thigh part of a user, the foot bracket is used for supporting the calf part of the user, and the foot rest is used for supporting the foot of the user. The head bracket, the backrest frame, the frame main body, the foot bracket and the pedal frame are sequentially connected in a rotating manner, and after the parts rotate mutually, actions such as back lifting, leg lifting, head supporting and the like can be realized by changing the angles of the parts on the horizontal plane. The linkage assembly comprises a first connecting rod mechanism, a second connecting rod mechanism and a third connecting rod mechanism, the first connecting rod mechanism is arranged between the frame main body and the head bracket and used for driving the head bracket to rotate, and the first connecting rod mechanism is specifically used for driving the head bracket to rotate to a proper position around the backrest frame and supporting the head of a user. The second connecting rod mechanism is arranged between the backrest frame and the leg bracket and is respectively used for driving the backrest frame and the leg bracket to rotate. The second link mechanism is specifically used for driving the backrest frame to rotate around the frame main body and driving the leg bracket to rotate around the frame main body, so that the backrest frame and the leg bracket rotate to proper positions, and a user can lift the back or the thigh conveniently. The second connecting rod mechanism is further connected with the foot bracket and used for driving the foot bracket to rotate. The leg support can lift the lower leg part of the user in the rotating process, so that the lower leg of the user is lifted to a proper position. The third connecting rod mechanism is arranged between the foot bracket and the pedal frame, so that the third connecting rod mechanism can be driven to drive the pedal frame to rotate when the foot bracket rotates. Because the third link mechanism is respectively connected to the foot bracket and the foot rest, after the second link mechanism drives the foot bracket to rotate, the foot bracket can drive the third mechanism to move, so that the third mechanism drives the foot rest to relatively rotate around the foot bracket, and the foot rest is rotated to a position suitable for placing feet of a user. The second link mechanism is connected with the first link mechanism and is used for driving the first link mechanism. The second link mechanism is connected with a push rod for driving the second link mechanism. The push rod is moved by external force, and the second connecting rod mechanism can be driven after the push rod moves. Because the second link mechanism is connected with the first link mechanism, the second link mechanism can drive the first link mechanism after the second link mechanism is driven. It is known that the foot bracket can drive the third linkage after the second linkage drives the foot bracket in motion. Therefore, the movement of all the connecting rod mechanisms can be realized only by driving the push rod to move by one driving mechanism, so that all parts of the bed body assembly are driven to move to proper positions, and the purpose of supporting all body parts of a user is achieved.

Therefore, the multi-connecting-rod linkage structure of the nursing bed can realize the functions of back lifting, leg lifting, body turning and the like of the nursing bed by only utilizing one driving mechanism, and the problems that the cost is higher, the failure rate is increased by multiple motors and the like caused by one motor and multiple motors acting in the traditional nursing bed are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of the lying structure of the embodiment of the present invention;

fig. 3 is a three-dimensional structure diagram of the embodiment of the present invention.

Icon: 1-head bracket, 2-long connecting piece, 3-head support short connecting piece, 4-L type moving connecting piece, 5-movable frame, 6-hydraulic rod, 7-double-bent connecting piece, 8-pedal, 9-foot supporting plate, 10-leg support short connecting piece, 11-leg bracket, 12-frame main body, 13-backrest frame, 14-first connecting auxiliary piece, 15-second connecting auxiliary piece, 16-third connecting auxiliary piece, 17-fifth connecting auxiliary piece, 18-fourth connecting auxiliary piece and 19-push rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "lower", "horizontal", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" and the like, if present, does not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Please refer to fig. 1 and fig. 2, fig. 1 shows the structural schematic diagram of the embodiment of the present invention, fig. 2 shows the structural schematic diagram of the lying of the embodiment of the present invention, the present embodiment provides a nursing bed multi-connecting-rod linkage structure, including bed body assembly and linkage assembly, the bed body assembly is the main component of the nursing bed, and the above-mentioned linkage assembly is mainly used for realizing various actions of the bed body assembly. The bed body component comprises a head bracket 1, a backrest frame 13, a frame main body 12, a foot bracket and a pedal frame which are sequentially connected in a rotating way, wherein the frame main body 12 is provided with a leg bracket 11 which is connected with the frame main body 12 in a rotating way. Wherein the head bracket 1 is used for supporting the head of a user, and the backrest frame 13 is used for leaning of the back of the user. The main frame of the vehicle body is used for bearing a part of the body part of a patient and also used as the main structure of the nursing bed. The leg support 11 is used for supporting the thigh of the user, the foot support is used for supporting the calf of the user, and the foot rest is used for supporting the foot of the user. The head bracket 1, the backrest frame 13, the frame body 12, the foot bracket and the pedal frame are sequentially connected in a rotating manner, and after the components rotate mutually, actions such as back lifting, leg lifting, head supporting and the like can be realized by changing the angles of the components on the horizontal plane.

In this embodiment, the linkage assembly includes a first link mechanism, a second link mechanism and a third link mechanism, the first link mechanism is disposed between the frame body 12 and the head bracket 1 and is used for driving the head bracket 1 to rotate, and the first link mechanism is specifically used for driving the head bracket 1 to rotate to a proper position around the backrest frame 13 and supporting the head of the user.

In the present embodiment, the second link mechanism is disposed between the backrest frame 13 and the leg bracket 11, and is used for driving the backrest frame 13 and the leg bracket 11 to rotate, respectively. The second link mechanism is specifically used for driving the backrest frame 13 to rotate around the frame main body 12, and simultaneously driving the leg bracket 11 to rotate around the frame main body 12, so that the backrest frame 13 and the leg bracket 11 rotate to proper positions, and a user can lift the back or thigh conveniently. The second connecting rod mechanism is further connected with the foot bracket and used for driving the foot bracket to rotate. The leg support can lift the lower leg part of the user in the rotating process, so that the lower leg of the user is lifted to a proper position.

In this embodiment, the third link mechanism is disposed between the foot rest and the foot rest, so that the foot rest can drive the third link mechanism to drive the foot rest to rotate when rotating. Because the third link mechanism is respectively connected to the foot bracket and the foot rest, after the second link mechanism drives the foot bracket to rotate, the foot bracket can drive the third mechanism to move, so that the third mechanism drives the foot rest to relatively rotate around the foot bracket, and the foot rest rotates to a position suitable for placing the feet of a user. The second link mechanism is connected with the first link mechanism and is used for driving the first link mechanism. The second link mechanism is connected with a push rod 19 for driving the second link mechanism. The push rod 19 is moved by an external force, and the second link mechanism can be driven after the push rod 19 is moved. Because the second link mechanism is connected with the first link mechanism, the second link mechanism can drive the first link mechanism after the second link mechanism is driven. It is known that the foot bracket can drive the third linkage after the second linkage drives the foot bracket in motion. Therefore, only one driving mechanism is needed to drive the push rod 19 to move, and the movement of all the connecting rod mechanisms can be realized, so that all parts of the bed body assembly are driven to move to proper positions, and the purpose of supporting all body parts of a user is achieved.

Referring to fig. 3, in some embodiments of the present invention, the first link mechanism includes a long connecting piece 2, a head support short connecting piece 3 and an L-shaped moving connecting piece 4, one end of the long connecting piece 2 is rotatably connected to the head bracket 1 through a first connecting sub-piece 14, the head support short connecting piece 3 and the L-shaped moving connecting piece 4 are respectively disposed on two sides of the other end of the long connecting piece 2, the head support short connecting piece 3 and the L-shaped moving connecting piece 4 are respectively rotatably connected to the long connecting piece 2, a free end of the head support short connecting piece 3 is rotatably connected to one end of the push rod 19, and the L-shaped moving connecting piece 4 is rotatably connected to the frame body 12.

In this embodiment, the long connecting piece 2 and the head support short connecting piece 3 form a link mechanism, the head support short connecting piece 3 is connected with the push rod 19, the push rod 19 can drive the head support short connecting piece 3 to move after moving, and the long connecting piece 2 connected with the head support short connecting piece 3 starts to move, so that the long connecting piece 2 drives the head bracket 1 to rotate to a proper position around the backrest frame 13, and the head of a user can be supported in the rotating process. Similarly, when the push rod 19 is moved in the reverse direction, the head rest 1 is rotated around the back rest frame 13 to a position in parallel engagement with the back rest frame 13, so that the head of the user lies down.

In this embodiment, after the L-shaped moving link 4 is rotatably connected to the frame body 12, the head support short link 3 needs to drive the long link 2 to move, and the head support short link 3 can also drive the L-shaped moving link 4 to move, so as to link the L-shaped moving link 4. The L-shaped moving connecting piece 4 provides an acting point for the head support short connecting piece 3 after moving, and ensures that the long connecting piece 2 can drive the first connecting auxiliary piece 14 to move after moving, so that the head bracket 1 moves to a proper position.

Referring to fig. 3, in some embodiments of the present invention, the second link mechanism includes a movable frame 5 and a leg support short connecting piece 10, one end of the movable frame 5 is connected to the back frame 13 through a second connecting sub-piece 15, the other end of the movable frame is connected to the leg support short connecting piece 10, the leg support short connecting piece 10 is connected to the leg bracket 11, a third connecting sub-piece 16 is disposed between the movable frame 5 and the leg bracket, one end of the third connecting sub-piece 16 is fixed to the leg bracket, and the other end of the third connecting sub-piece 16 is connected to the movable frame 5.

In this embodiment, the movable frame 5 can drive the second connecting sub-piece 15 to move, so that the second connecting sub-piece 15 drives the back frame 13 to rotate around the frame body 12 to a proper position, and the back frame 13 lifts the back of the user during the rotation to the proper position. After the same movable frame 5 moves reversely, the backrest frame 13 can be connected with the frame main body 12 in parallel, so that the back of the user is in a lying state.

In this embodiment, the other end of the movable frame 5 is connected to the third connecting sub-piece 16 to form a link mechanism, and the third connecting sub-piece 16 is fixedly connected to the leg bracket 11. When one end of the movable frame 5 moves to drive the second connecting auxiliary sheet 15 to move, so that the backrest frame 13 rotates, the other end of the movable frame 5 pulls the leg support short connecting sheet 10, so that the leg support short connecting sheet 10 upwards jacks up the leg bracket 11, and the thigh of a user is supported. Meanwhile, the other end of the movable frame 5 pulls the third connecting sub-piece 16, so that the third connecting sub-piece 16 drives the foot bracket to rotate around the frame main body 12, and the lower leg part of the user is bent to a proper position.

Referring to fig. 3, in some embodiments of the present invention, a groove is disposed on the movable frame 5, and the push rod 19 can extend into the groove, so that the push rod 19 can move to drive the movable frame 5 to move. The side walls of the groove will act on the movable frame 5 after the movement of the push rod 19, thereby moving the movable frame 5.

In some embodiments of this embodiment, the third link mechanism includes a double-bent connecting plate 7, and two ends of the double-bent connecting plate 7 are respectively rotatably connected to the pedal frame and the foot rest. The two ends of the double-bent connecting piece 7 are of bent structures, and the double-bent connecting piece 7 can be driven to move after the foot bracket moves, so that the double-bent connecting piece 7 drives the foot bracket to rotate around the foot bracket.

In this embodiment, a fourth connecting sub-piece 18 is provided between the double-bent connecting piece 7 and the pedal frame, and the double-bent connecting piece 7 is rotatably connected to the fourth connecting sub-piece 18.

In this embodiment, a fifth connecting sub-piece 17 is provided between the leg brackets of the double-bent connecting piece 7, and the double-bent connecting piece 7 is rotatably connected to the fifth connecting sub-piece 17.

In this embodiment, the fourth connecting sub-piece 18 and the fifth connecting sub-piece 17 can assist the foot rest to rotate to a proper position around the foot bracket, so that the user can place the foot conveniently.

In some embodiments of this embodiment, the multi-link linkage structure includes two linkage assemblies symmetrically disposed on two sides of the bed assembly. The two linkage assemblies can ensure that all parts of the bed body assembly are stressed uniformly, and can effectively move all parts to proper positions.

In some embodiments of this embodiment, the two linkage assemblies share the same push rod 19. The two linkage assemblies share the same push rod 19, so that synchronous movement of the linkage assemblies can be ensured.

In some embodiments of the present invention, the multi-link linkage structure further includes a driving mechanism, the driving mechanism includes a hydraulic rod 6, and two ends of the hydraulic rod 6 are respectively and rotatably connected to the middle portion of the frame body 12 and the push rod 19. The driving mechanism is mainly used for driving the push rod 19 to move, and the hydraulic rod 6 is used for forcefully pushing the push rod 19 to move and keeping the push rod 19 at a required position.

When the nursing bed needs to be converted from the lying state to the rising state, the hydraulic rod 6 is started, and the hydraulic rod 6 drives the push rod 19 to move. The push rod 19 drives the movable frame 5 and the head support short connecting sheet 3 to be linked, the movable frame 5 drives the second connecting auxiliary sheet 15 to push the backrest frame 13 to rotate around the frame main body 12, and the user can stand up the back of the user. Meanwhile, the head support short connecting piece 3 is linked with the L-shaped moving connecting piece 4, so that the first connecting auxiliary piece 14 drives the head bracket 1 to rotate around the backrest frame 13, and the head of a user is supported. In the moving process of the movable frame 5, the other end of the movable frame is respectively linked with the leg support short connecting sheet 10 and the third connecting auxiliary sheet 16, the leg support short connecting sheet 10 drives the leg bracket 11 to rotate around the frame main body 12 to support the thigh part of a user, and the third connecting auxiliary sheet 16 drives the foot bracket to rotate downwards around the frame main body 12, so that the foot bracket drives the shank part of the user to bend. When the foot bracket rotates, the double-bending connecting sheet can be driven to move, so that the foot rest rotates around the foot bracket, and a user can place feet conveniently. Similarly, when the components of the bed body assembly need to be adjusted to be in a lying state, only the hydraulic rod 6 needs to be reversely driven.

To sum up, the embodiment of the utility model provides a nursing bed multi-connecting-rod linkage structure, including bed body subassembly and linkage subassembly, the bed body subassembly is the essential element of nursing bed, and the various actions of bed body subassembly are realized to above-mentioned linkage group mainly used. The bed body component comprises a head bracket 1, a backrest frame 13, a frame main body 12, a foot bracket and a pedal frame which are sequentially connected in a rotating way, wherein the frame main body 12 is provided with a leg bracket 11 which is connected with the frame main body 12 in a rotating way. Wherein, the head bracket 1 is used for supporting the head of a user, and the backrest frame 13 is used for leaning of the back of the user. The main frame of the vehicle body is used for bearing a part of the body part of a patient and also used as the main structure of the nursing bed. The leg support 11 is used for supporting the thigh of the user, the foot support is used for supporting the calf of the user, and the foot rest is used for supporting the foot of the user. The head bracket 1, the backrest frame 13, the frame body 12, the foot bracket and the pedal frame are sequentially connected in a rotating manner, and after the components rotate mutually, actions such as back lifting, leg lifting, head supporting and the like can be realized by changing the angles of the components on the horizontal plane. The linkage assembly comprises a first linkage mechanism, a second linkage mechanism and a third linkage mechanism, the first linkage mechanism is arranged between the frame main body 12 and the head bracket 1 and is used for driving the head bracket 1 to rotate, and the first linkage mechanism is specifically used for driving the head bracket 1 to rotate to a proper position around the backrest frame 13 and supporting the head of a user. The second link mechanism is arranged between the backrest frame 13 and the leg bracket 11 and is used for driving the backrest frame 13 and the leg bracket 11 to rotate respectively. The second link mechanism is specifically used for driving the backrest frame 13 to rotate around the frame body 12, and simultaneously driving the leg bracket 11 to rotate around the frame body 12, so that the backrest frame 13 and the leg bracket 11 rotate to proper positions, and a user can lift the back or thigh conveniently. The second connecting rod mechanism is further connected with the foot bracket and used for driving the foot bracket to rotate. The leg support can lift the lower leg part of the user in the rotating process, so that the lower leg of the user is lifted to a proper position. The third connecting rod mechanism is arranged between the foot bracket and the pedal frame, so that the third connecting rod mechanism can be driven to drive the pedal frame to rotate when the foot bracket rotates. Because the third link mechanism is respectively connected to the foot bracket and the foot rest, after the second link mechanism drives the foot bracket to rotate, the foot bracket can drive the third mechanism to move, so that the third mechanism drives the foot rest to relatively rotate around the foot bracket, and the foot rest rotates to a position suitable for placing the feet of a user. The second link mechanism is connected with the first link mechanism and is used for driving the first link mechanism. The second link mechanism is connected with a push rod 19 for driving the second link mechanism. The push rod 19 is moved by an external force, and the second link mechanism can be driven after the push rod 19 is moved. Because the second link mechanism is connected with the first link mechanism, the second link mechanism can drive the first link mechanism after the second link mechanism is driven. It is known that the foot bracket can drive the third linkage after the second linkage drives the foot bracket in motion. Therefore, only one driving mechanism is needed to drive the push rod 19 to move, and the movement of all the connecting rod mechanisms can be realized, so that all parts of the bed body component are driven to move to proper positions, and the purpose of supporting all body parts of a user is achieved. Therefore, the multi-connecting-rod linkage structure of the nursing bed can realize the functions of back lifting, leg lifting, body turning and the like of the nursing bed by only utilizing one driving mechanism, and the problems that the cost is higher, the failure rate is increased by multiple motors and the like caused by one motor and multiple motors acting in the traditional nursing bed are solved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-connecting-rod linkage structure of a nursing bed is characterized by comprising a bed body component and a linkage component, wherein the bed body component comprises a head bracket, a backrest frame, a frame main body, a foot bracket and a pedal frame which are sequentially and rotatably connected, and the frame main body is provided with a leg bracket rotatably connected with the frame main body;

2. The nursing bed multi-connecting-rod linkage structure according to claim 1, wherein the first connecting rod mechanism comprises a long connecting piece, a head support short connecting piece and an L-shaped moving connecting piece, one end of the long connecting piece is rotatably connected with the head bracket through a first connecting auxiliary piece, the head support short connecting piece and the L-shaped moving connecting piece are respectively arranged on two sides of the other end of the long connecting piece, the head support short connecting piece and the L-shaped moving connecting piece are respectively rotatably connected with the long connecting piece, the free end of the head support short connecting piece is rotatably connected with one end of the push rod, and the L-shaped moving connecting piece is rotatably connected with the frame main body.

3. The multi-link linkage structure of a nursing bed as claimed in claim 2, wherein the second link mechanism comprises a movable frame and a leg support short connecting piece, one end of the movable frame is rotatably connected with the backrest frame through a second connecting sub-piece, the other end of the movable frame is rotatably connected with the leg support short connecting piece, the leg support short connecting piece is rotatably connected with the leg bracket, a third connecting sub-piece is arranged between the movable frame and the leg bracket, one end of the third connecting sub-piece is fixed with the leg bracket, and the other end of the third connecting sub-piece is rotatably connected with the movable frame.

4. The multi-link linkage structure of a nursing bed as claimed in claim 3, wherein the movable frame is provided with a groove, and the push rod can extend into the groove, so that the push rod can move to drive the movable frame to move.

5. The multi-link linkage structure of claim 3, wherein the third link mechanism comprises a double-bent connecting piece, and two ends of the double-bent connecting piece are respectively connected with the foot rest and the foot bracket in a rotating manner.

6. The multi-link linkage structure of a nursing bed as claimed in claim 5, wherein a fourth connecting sub-piece is arranged between the double-bent connecting piece and the foot rest, and the double-bent connecting piece is rotatably connected with the fourth connecting sub-piece.

7. The nursing bed multi-link linkage structure as claimed in claim 5, wherein a fifth connecting sub-piece is provided between the foot brackets and the double-bent connecting piece is rotatably connected with the fifth connecting sub-piece.

8. The nursing bed multi-link linkage structure according to any one of claims 1 to 7, wherein the multi-link linkage structure comprises two linkage assemblies symmetrically disposed on both sides of the bed assembly.

9. The nursing bed multi-link linkage structure of claim 8 wherein two of the linkage assemblies share the same push rod.

10. The nursing bed multi-link linkage structure of claim 8, further comprising a driving mechanism including a hydraulic rod having two ends rotatably connected to the frame body and the middle portion of the push rod, respectively.