CN111329282A - An electric bed with a head linkage mechanism - Google Patents

Abstract

The invention discloses an electric bed with a head linkage mechanism, which comprises: a fixed frame for providing installation and support; a bed board connected with the fixed frame and having a plurality of reversible wooden boards; a drive fixed on the fixed frame Mechanism; a sliding frame that is slidably connected with the fixed frame, which can make the back bed board link with the head bed board and a head link mechanism that delays the lifting of the head bed board. The head linkage mechanism includes a connecting piece that is rotatably connected with the sliding frame, and a delay transmission assembly that delays raising the head bed board. The head holder on the upper bed is rotatably connected. The invention can realize the linkage function between the back board and the head board of the electric bed, and the head board can be delayed to start, so as to relieve the discomfort of the head caused when the back is raised.

Description

An electric bed with a head linkage mechanism

technical field

The invention relates to an electric bed, in particular to an electric bed with a head linkage mechanism, which can realize the linkage between the back plate and the head plate.

Background technique

With the development of electric bed technology, people's demand for electric bed is also increasing. The function of the electric bed is also constantly improving and developing. The invention relates to a head linkage mechanism. The linkage mechanism is used to realize the linkage between the back board and the head board, the back board supports the back of the human body, and the head board supports the head of the human body. When watching TV or reading, etc. , the back and head of the human body need to form a certain angle in order to achieve the best body posture.

The back board and the head board of the traditional electric bed are a whole board. The lying position of the head cannot be changed during use, and the user experience needs to be improved. In order to improve the comfort of the head during the lifting process of the electric bed, some people began to develop An electric bed with a bed board and a back board, such as the invention patent with Chinese patent number 201610080347.0 discloses an intelligent remote control electric bed; it includes a head board and a back board, as well as a head motor and a back motor. Lifting, but this method is not only complicated in structure, but also greatly increases the cost of the electric bed.

At present, there are electric beds with linkage function in the existing technology on the market. There are mainly two movement modes: 1) The head board moves with the back board first, and after the head board moves to the end position, the back board starts to move; 2) The head board starts to move. The board and the back board start to move together, so that when the human body is squatting, the back board is at a small angle, and the head is first lifted, which will cause discomfort to the head.

SUMMARY OF THE INVENTION

In order to solve the deficiencies and problems existing in the prior art, the present invention provides an electric bed with a head linkage mechanism. By arranging a head linkage mechanism on the bed plate, the linkage between the back bed plate and the head bed plate is realized, which greatly improves the It improves the stability and comfort during the lifting of the electric bed.

The purpose of the present invention is achieved through the following technical solutions, an electric bed with a head linkage mechanism, comprising: a fixed frame for providing installation and support; a bed board connected with the fixed frame, with a plurality of reversible A wooden board; a sliding frame slidably connected with the fixed frame; a driving mechanism fixed on the fixed frame; a head linkage mechanism that can link the back bed with the head bed, respectively connected with the sliding frame, the back bed and the head bed.

Further, the head linkage mechanism includes a connecting piece that is rotatably connected to the sliding frame, and a delay transmission assembly that delays raising the head bed board, one end of the delay transmission assembly is rotatably connected to the connecting piece, and the other end is rotatably connected to the head bed board. Or it can be rotatably connected with the head holder fixed on the head bed.

Further, the structure in which the head linkage mechanism is connected with the sliding frame or the back bed board, the delay transmission assembly or the head fixing seat has a chute, and the chute is provided with a sliding shaft, and the sliding shaft can slide along the sliding shaft, In order to delay the lifting time of the head board, after the back board is raised for a period, the head board is raised again, which improves the comfort during the lifting of the electric bed board.

Further, the head linkage mechanism includes: a fixed seat, a sliding link, a transmission link, and a connecting piece with a chute, one end of the connecting piece with a chute is rotatably connected to the sliding frame, and the other end passes through the sliding shaft. A sliding link is connected, one end of the sliding link is hinged with a transmission link, and the other end of the transmission link is fixed on the head fixing seat.

Further, in the connecting piece with the sliding groove, the sliding groove on it is a long groove or a waist hole, a sliding shaft is arranged in the long groove, a sliding connecting rod is connected to the shaft on the sliding shaft, and the other end of the sliding connecting rod is connected with the sliding rod. The transmission link is rotatably connected, and the other end of the transmission link is rotatably connected with the fixed seat on the head bed.

Further, the sliding link and the transmission link are rotatably connected through a shaft, and the shaft is fixed on the back fixing seat.

Further, the bed board includes a head board, a back board, a waist board and a foot board that are hinged to each other, wherein the back board is movably connected with a connecting rod, and the other end of the connecting rod is hinged on the fixed frame, preferably , the connecting rods are symmetrically arranged on the back bed.

Further, the sliding frame includes a sliding crossbar, a pulley and a support seat, the support seat is connected with a sliding crossbar and a pulley, the pulley is slidably connected with the fixed frame, and the two ends of the sliding crossbar are connected with the support seat to make the sliding The crossbar can move within the range of the fixed frame.

Further, the front end of the drive push rod of the driver is rotatably connected to the support frame and connected to a transmission push rod, and one end of the transmission push rod is fixed on the back bed. Preferably, the support seat is a triangular support The support frame is connected with the transmission push rod as a whole.

When sliding, the drive push rod exerts force to make the transmission push rod drive the back bed plate to lift, the back bed plate lift drives the head bed plate to rise, the connecting rod can support the back bed plate well, the lifting of the back bed plate makes the sliding shaft along the connection with the chute One end of the chute on the part starts to slide, and when it slides along the sliding shaft to the other end of the chute, the sliding link pushes the transmission link to rotate, and the rotation of the transmission link pushes the fixed seat sleeve connected to it to rotate, making the head bed plate lift.

Optionally, the chute can also be provided on the component connected to the back bed board, as long as the head bed board can be delayed relative to the back bed board to be lifted.

The invention adopts the design of the chute and the delay component to realize the linkage function between the back board and the head board of the electric bed, and the head board can be delayed to start, so as to relieve the discomfort of the head caused when the back is raised, and make the head board has better strength.

Description of drawings

The following will briefly introduce the accompanying drawings used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only the embodiments of the present invention. On the premise of creative work, other drawings can be obtained according to the provided drawings.

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

Fig. 2 is a partial enlarged schematic view of the head linkage mechanism described in Fig. 1;

3 is a schematic diagram of an embodiment of the initial state of the head linkage mechanism according to the present invention;

4 is a schematic diagram of an embodiment of the sliding state of the head linkage mechanism according to the present invention;

5 is a schematic diagram of an embodiment of the sliding shaft sliding to the end of the chute according to the present invention;

FIG. 6 is a schematic diagram of the state of the back bed board and the head bed board after the sliding shaft slides to the end of the chute according to the present invention;

7 is a schematic diagram of the sliding termination state of the head linkage mechanism in Embodiment 1 of the present invention;

8 is a schematic diagram of a sliding termination state of an embodiment of the head linkage mechanism according to the present invention;

9 is a schematic diagram of a sliding termination state of an embodiment of the head linkage mechanism according to the present invention;

FIG. 10 is a schematic diagram of a sliding termination state of an embodiment of the head linkage mechanism according to the present invention.

In the figure: 1-Fixed frame, 2-Sliding frame, 3-Head linkage mechanism, 4-Bed board, 5-Link, 6-Drive mechanism, 10-Groove, 21-Support seat, 22-Pulley, 31- Connecting piece, 32-Sliding link, 33-Transmission link, 34-Back fixing seat, 35-Head fixing seat, 36-Sliding shaft, 41-Head bed board, 42-Back bed board, 61-Driver push rod, 62-transmission push rod, 310-chute, 320-shaft, 610-support frame.

Detailed ways

The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the accompanying drawings in the embodiments of the present invention.

It should be noted that the orientation or positional relationship indicated by the terms "one end", "the other end", "end", "both sides", "inside end", etc. are based on the orientation or positional relationship shown in the accompanying drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the components or parts referred to must have a specific orientation or be configured in a specific orientation, and therefore should not be construed as a limitation of the present invention.

It should be noted that, unless otherwise expressly specified and limited, the term "rotational connection" should be understood in a broad sense, for example, it may be a hinged connection, or a 360-degree rotational connection, such as a shaft connection; it may be a direct connection, It can also be indirectly connected through an intermediate medium, and those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention under specific circumstances.

As shown in Figure 1, Figure 2, Figure 5, Embodiment 1, an electric bed with a head linkage mechanism, includes: a fixed frame 1 for providing installation and support; a bed board 4 connected with the fixed frame 1, with A plurality of reversible wooden boards; a sliding frame 2 slidably connected with the fixed frame 1; a driving mechanism 6 fixed on the fixed frame 1; The linkage mechanism 3 and the head linkage mechanism 3 are respectively connected with the sliding frame 2 , the back bed 42 and the head bed 41 .

Further, the fixed frame is formed by splicing a plurality of horizontal and vertical frames, preferably metal pipes are used, and grooves 10 for sliding the pulleys 22 on the sliding frame 2 are formed on both sides of the fixed frame 1 .

Further, the sliding frame includes a sliding crossbar, a pulley 22 and a support base 21, the support base 21 is connected with a sliding crossbar and a pulley, and the pulley is connected in the groove of the fixed frame and is slidably connected with the fixed frame, Both ends of the sliding crossbar are connected with the support base, so that the sliding crossbar can move within the range of the fixed frame.

Further, the sliding frame 2 relatively slides in the horizontal direction along the groove 10 on the fixed frame 1 through the pulley 22 .

Further, the head linkage mechanism includes a connecting piece 31 rotatably connected with the sliding frame 2, and a delay transmission assembly for delaying the lifting of the head bed 41, the delay transmission assembly includes a sliding link 32 and a transmission link 33, One end of the sliding link 32 is rotatably connected with the connecting piece 31, the other end of the sliding link 32 is rotatably connected with a transmission link 33 and is connected to the back fixing seat 34 on the back bed board 42 through a shaft, and the other end of the transmission link 33 is rotatably connected to the back seat 34. On the head fixing seat 35 , optionally, the transmission link 33 can also be rotatably connected to the head bed board 41 .

Further, the structure in which the head linkage mechanism 3 is directly connected with the sliding frame 2 or the back bed board 42 has a chute 310 to delay the lifting time of the head bed board, so that after the back bed board is raised for a period, the head bed board can be moved again. Lifting improves the comfort during the lifting of the electric bed board.

Further, the connecting member 31 is slidably connected with the delay transmission assembly, so that the delay transmission assembly can delay sliding to lift the head bed 41 .

As shown in FIG. 2 , the head linkage mechanism includes: a back fixing seat 34 , a head fixing seat 35 , a sliding link 32 , a transmission link 33 , a connecting piece 31 with a sliding groove, and a sliding link 32 The delay assembly formed with the transmission link 33 can delay the lifting time of the head bed. One end of the connecting piece 31 with the chute is connected with the sliding frame 2 in rotation, and the other end is connected with the sliding link 32 through the sliding shaft 36 in rotation. The sliding link 32 One end is rotatably connected to a transmission link 33 , and the other end of the transmission link 33 is rotatably connected to the head holder 35 .

Further, the sliding groove 310 on the connecting piece is a long groove or a waist hole, and a sliding shaft 36 is arranged in the long groove. The transmission link 33 is rotatably connected, and the other end of the transmission link 33 is rotatably connected with the head fixing seat 35 .

Further, the sliding link 32 and the transmission link 33 are rotatably connected through a shaft 320, and the shaft 320 is fixed on the back fixing seat 34.

Preferably, one end of the transmission link 33 is rotatably connected to the head bed 41 or the head fixing seat 35 connected to the head bed 41 , and the other end is connected to the back fixing seat of the sliding link 32 on the back bed 42 . 34 on the turning connection.

Further, the bed board includes a head board 41, a back board 42, a waist board and a foot board that are hinged to each other through hinges, wherein the back board 42 is movably connected with a connecting rod 5, and the other end of the connecting rod 5 is hinged On the fixed frame 1 of the head, preferably, the connecting rods 5 are symmetrically arranged between the back bed 42 and the fixed frame 1 of the head.

Further, the head bed board and the back bed board can be wooden boards, iron frames, or other material boards.

As shown in Figures 3 and 4, the front end of the drive push rod 61 of the driver is rotatably connected to the support frame 610, the support frame 610 is connected with a transmission push rod 62, and one end of the transmission push rod 62 and the support frame 610 are respectively connected to the support frame 610. Fixed on the back bed board 42, preferably, the support frame 610 is a triangular support frame, and the support frame 610 is connected with the transmission push rod 62 as a whole, which can improve the stability of lifting the bed board.

As shown in FIG. 8 , Embodiment 2 takes Embodiment 1 as the basic technical solution.

Optionally, the head linkage mechanism includes a connecting member 31 rotatably connected to the sliding frame 2, the connecting member 31 is rotatably connected to one end of the delay transmission assembly, and the other end of the delay transmission assembly is connected to the head bed board 41, the said The delay transmission assembly includes a sliding link 32 and a transmission link 33. A sliding slot 310 is provided on one end of the sliding link 32 and the connecting piece 31 for rotating connection. The part 31 is rotatably connected with the sliding shaft 36 in the chute 310 at one end of the sliding link 32, and the other end of the sliding link 32 is rotatably connected with the transmission link 33 and is connected to the back fixing seat 34 on the back bed 42 through the shaft, and the transmission is connected The other end of the rod 33 is rotatably connected to the head fixing seat 35 , and optionally, the transmission link 33 can also be rotatably connected to the head bed board 41 .

As shown in FIG. 9, Embodiment 3 takes Embodiment 1 as the basic technical solution.

Optionally, the head linkage mechanism includes a connecting member 31 rotatably connected to the sliding frame 2, the connecting member 31 is rotatably connected to one end of the delay transmission assembly, and the other end of the delay transmission assembly is connected to the head bed board 41, the said The delay transmission assembly includes a sliding link 32 and a transmission link 33. One end of the transmission link 33 that is rotatably connected to the sliding link 32 is provided with a chute 310, and the chute 310 is provided with a sliding shaft 36 that slides along the chute 310. The sliding shaft 36 is rotatably connected to the sliding link 32, one end of the sliding link 32 is rotatably connected to the transmission link 33 and is connected to the back fixing seat 34 on the back bed board 42 through the shaft, and the other end of the transmission link 33 is rotatably connected to the head On the fixed seat 35 , optionally, the transmission link 33 can also be rotatably connected to the head bed 41 .

As shown in FIG. 10, Embodiment 4 takes Embodiment 1 as the basic technical solution.

Optionally, the head linkage mechanism includes a connecting member 31 rotatably connected to the sliding frame 2, and a delay transmission assembly for delaying the lifting of the head bed 41, the delay transmission assembly includes a sliding link 32 and a transmission link. 33. One end of the delay transmission assembly is rotatably connected with the connecting piece 31, the other end is rotatably connected with the head holder 35 fixed on the head bed board 41, and one end of the sliding link 32 is rotatably connected with the transmission link 33 and is connected to the back through the shaft On the back fixing seat 34 on the bed board 42 , the other end of the transmission link 33 is rotatably connected to the head fixing seat 35 , and optionally, the transmission link 33 can also be rotatably connected to the head bed board 41 .

Further, a chute 310 is provided at the rotational connection between the head holder 35 and the transmission link 33 , and a sliding shaft 36 is arranged in the chute 310 , and the sliding shaft 36 is rotatably connected with the transmission link 33 .

In Embodiments 1-4, due to the use of components with a chute, the head bed can be raised with a delay when the back bed is raised, thereby improving the comfort of the head when the electric bed is raised.

The drive push rod exerts force to make the transmission push rod drive the back bed plate to rise, the back bed plate lift drives the head bed plate to rise, the connecting rod can support the back bed plate well, the lifting of the back bed plate makes the sliding shaft slide up along the connecting piece with the chute One end of the slot starts to slide, and when it slides along the sliding shaft to the other end of the chute, the sliding link pushes the transmission link to rotate, and the rotation of the transmission link pushes the fixed seat cover connected to it to rotate, so that the head bed plate is lifted.

Optionally, the chute can also be provided on the component connected to the back bed board, as long as the head bed board can be delayed relative to the back bed board to be lifted.

Further, in the head linkage mechanism, when the sliding shaft slides from one end of the chute to the other end of the chute, the back bed and the head bed are lifted synchronously, and when sliding to the end of the chute, the transmission is connected. The rod begins to rotate to raise the head deck.

Further, at least one stop piece is installed on the back bed board or the head bed board, and the two ends of the stop piece respectively extend to the area of the back board board and the head board board, so as to prevent the head board board from turning down.

Preferably, the stop piece is symmetrically arranged on the back bed or the head bed, when one end of the stop piece is installed on the back bed, the other end supports the head bed; when one end of the stop piece is installed on the head bed , the other end extends to the back deck area to prevent the head deck from turning down.

In Embodiment 1, as shown in Fig. 3, Fig. 4, Fig. 5, in the initial state, the driving push rod is in a state of not being pushed out, and the connecting piece 31 with the chute 310 of the head linkage mechanism 3 is in an unstressed state down, the sliding shaft 36 is on the inner end of the chute 310 on the connecting piece 31; after the driver is activated, the driving push rod 61 starts to push the back bed board 42 to rise slowly through the transmission push rod 62, and at this time, the push rod 5 lifts the back bed board 42 The back bed 42 drives the sliding link 32 to slide along the chute 310 on the connecting piece 31 , while the transmission link 33 does not receive the thrust and will not drive the head bed 35 to lift, and the sliding shaft 36 moves to the chute 310 Before the other side end, the head board 41 will be lifted synchronously with the back board 42 .

As shown in FIGS. 5 and 6 , after the sliding shaft 36 slides to the other side of the chute 310 , the driving push rod 61 continues to exert force, the transmission push rod 62 continues to push the back bed board 42 , and the sliding link 32 will follow the back The bed board 42 is rotated and lifted up, and the transmission link 33 connected to the sliding link 32 will rotate and push the head fixing seat 35 to rotate. Lift slowly.

After the sliding shaft 36 reaches the end position of the chute, the back bed 42 will be raised to a certain angle first, and then the head bed 41 will move with the back bed 42. The advantage of this is that when the back bed 42 is at a relatively small angle When the human body is generally in a lying state, the head does not need to be lifted; but when the back of the human body is raised to a certain angle, the human body is in a sitting position, and the head needs to be lifted so that the eyes can look straight ahead.

Further, when the sliding link 32 is rotated until the back deck 42 is no longer lifted, the transmission link 33 rotatably connected with the sliding link 32 also stops and continues to push the head deck 41 to lift.

As shown in FIG. 5 and FIG. 7 , after the sliding shaft 36 slides to the other side of the chute 310 , the driving push rod 61 continues to exert force, and the transmission push rod 62 continues to push the back bed board 42 . At this time, the sliding shaft 36 cannot continue Sliding along the chute 310, the sliding link 32 will push the transmission link 33 to rotate, and lift the back seat 34. When the back bed 42 cannot be lifted, the head bed 41 will also stop lifting.

Based on the above embodiments, the idea of the linkage between the back bed and the head bed of the present invention is: first the back panel is raised to a certain angle, and then the head panel moves together with the back panel. The advantage of this design is that when the back panel is at a relatively small angle, the human body is generally in a lying state, and the head does not need to be lifted; but when the back of the human body is raised to a certain angle, the human body is in a sitting position, and the head is in a sitting position. The upper part needs to be raised so that the eyes can look straight ahead.

Based on the concept of the present invention, the chute described in the present invention can be provided on the connecting piece connected with the sliding frame, on the structure connected with the head bed, on the delay transmission assembly, or on the On the parts connected to the back bed, as long as the sliding shaft slides from one end to the other in the chute, the back bed is linked with the head bed, and the head bed can continue to rise after the sliding shaft slides to the end of the chute. .

Based on the above-mentioned preferred embodiments of the present invention, those of ordinary skill in the art can make various deformations, replacements or modifications, the setting position of the chute can have various changes, and the composition of the delay assembly can also be variously changed as required, No specific description is given here.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (14)

1. An electric bed with a head linkage mechanism, comprising: a fixed frame for providing installation and support; a bed board connected with the fixed frame, having a plurality of reversible wooden boards; a drive mechanism fixed on the fixed frame; It is characterized in that it also includes: a sliding frame slidably connected with the fixed frame, and a head linkage mechanism that can make the back bed plate and the head bed plate interlock and delay the lifting of the head bed plate, the head linkage mechanism is respectively connected with the sliding frame, the back bed plate and the head bed The head bed is connected to the head bed, the head linkage mechanism includes a connecting piece that is rotatably connected to the sliding frame, and a delay transmission assembly that delays raising the head bed board, one end of the delay transmission assembly is rotatably connected to the connecting piece, and the other end is rotatably connected to the head bed Or it is rotatably connected with the head fixing base fixed on the head bed, the connecting piece, the delay transmission assembly or the head fixing base has a chute for delaying the lifting of the head bed, and a sliding shaft is arranged in the chute. 2. An electric bed with a head linkage mechanism according to claim 1, wherein the delay transmission assembly comprises a sliding link and a transmission link, one end of the sliding link is rotatably connected with the connecting piece, and the sliding The other end of the connecting rod is rotatably connected with a transmission link and is connected to the back fixing seat on the back bed board through a shaft, and the other end of the transmission link is rotatably connected to the head fixing seat. 3 . The electric bed with a head linkage mechanism according to claim 2 , wherein the connecting piece rotatably connected with the sliding frame is provided with a chute on one end connected with the sliding link, and the sliding A sliding shaft sliding along the sliding groove is arranged in the groove, and the sliding shaft is rotatably connected with the sliding connecting rod. 4 . The electric bed with a head linkage mechanism according to claim 2 , wherein the sliding connecting rod is provided with a chute on one end connected to the connecting piece, and a sliding groove is provided in the chute. 5 . The sliding shaft of the groove slides, and the sliding shaft is rotatably connected with the connecting piece. 5 . The electric bed with a head linkage mechanism according to claim 2 , wherein the transmission link is provided with a chute on one end that is rotatably connected with the sliding link, and a chute is provided in the chute. 6 . The sliding shaft slides along the chute, and the sliding shaft is rotatably connected with the sliding link. 6 . The electric bed with a head linkage mechanism according to claim 2 , wherein the head fixing seat is provided with a chute at the connection with the transmission link, and a slide groove is arranged in the chute. 7 . The sliding shaft of the chute sliding, the sliding shaft is rotatably connected with the transmission link. 7. An electric bed with a head linkage mechanism according to any one of claims 1-6, characterized in that, before the sliding shaft slides from one end of the chute to the other end of the chute, the back bed board is connected to the other end of the chute. The head bed plate is raised synchronously, and when sliding to the end of the chute, the transmission link starts to rotate to lift the head bed plate. 8 . The electric bed with a head linkage mechanism according to claim 7 , wherein the chute is a long slot or a waist hole. 9 . 9 . The electric bed with a head linkage mechanism according to claim 8 , wherein the head linkage mechanism further comprises: a back fixing seat and a head fixing seat, and the sliding link is connected with the transmission. 10 . The rod is rotatably connected by a shaft and the shaft is fixed on the back mounting seat, and one end of the transmission link is fixed on the head fixing seat. 10 . The electric bed with a head linkage mechanism according to claim 8 , wherein the bed board comprises a head board, a back board, a waist board and a foot board that are hinged to each other, wherein, 10 . A connecting rod is symmetrically and movably connected on the back bed, and the other end of the connecting rod is hinged on the fixed frame. 11 . The electric bed with a head linkage mechanism according to claim 10 , wherein the front end of the drive push rod is rotatably connected to the support frame, and the support frame is connected with a transmission push rod. 11 . , one end of the transmission push rod and the support frame are fixed on the back bed. 12. An electric bed with a head linkage mechanism according to any one of claims 1-6, 8-11, wherein the sliding frame comprises a sliding crossbar, a pulley and a support seat, and supports The seat is connected with a sliding crossbar and a pulley, the pulley is slidably connected with the fixed frame, and both ends of the sliding crossbar are connected with the support seat. 13 . The electric bed with a head linkage mechanism according to claim 12 , wherein the fixed frame has grooves for sliding the pulleys on the sliding frame. 14 . 14 . The electric bed with a head linkage mechanism according to claim 12 , wherein at least one stopper is installed on the back bed or the head bed to prevent the head bed from turning down. 14 . , the two ends of the stop piece extend to the area of the back bed board and the head bed board respectively.

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