CN1236716C - electric bed device - Google Patents

Abstract

The invention relates to an electric bed device and a control method for the operation of a dynamic and static bed set thereof, wherein the electric bed device comprises a bed panel which can adjust a backrest and lift feet, a bed surface framework which is combined with the bed panel, a lifting device which can jack up the bed surface framework to adjust various bed positions, a bed bottom framework which supports the lifting device and a controller which controls the dynamic and static operation of a bed body; through simple operation and application, if the manual operation is adopted, various static beds can be adjusted steplessly, and the automatic operation can change the set various static beds or various dynamic beds for operation, so that the functions of promoting the blood circulation of a human body by using the gravity of the earth, providing the lung disease patients with the functions of clearing accumulated phlegm by lying down, supplying oxygen to the brain under the head and feet, protecting the health and the like can be achieved.

Description

electric bed device

technical field

The invention relates to an electric bed device, which can be used in general families, hotels, leisure centers, medical care and other places, and its application fields include furniture, medical equipment and other industries.

Background technique

Traditional electric beds are mostly:

1. A general leisure bed with an upwardly adjustable elevation angle on the back of the bed surface, such as Taiwan’s approved announcement No. 370869 (application No. 87218307) utility model patent application for "improved structure of electric bed".

2. A general hospital bed with adjustable backrest, lifting feet, height, and inclination, such as Taiwan's approved announcement No. 325689 (application No. 86200788) utility model patent application for "automatic hospital bed".

3. Professional medical and rehabilitation beds with adjustable inclination angles, such as Taiwan's approved announcement No. 268281 (application No. 82210483 "rehabilitation bed structure" utility model patent application.

4. The inventor's Taiwan has approved the No. 372863 (Application No. 87114125 "Multi-function bed group operation control method and device thereof" invention patent application (Chinese Invention Patent Application No. 01131350.1 "Electric bed and its operation Control Method)".

Existing leisure beds and sick beds cannot provide inclined beds with larger elevation angles, nor do they have the function of dynamic transposition. The professional use of medical treatment, rehabilitation bed and the multifunctional bed set invented by the inventor (i.e. the No. 372863 patent application in Taiwan Publication Number) are products that are not easy to popularize because of their complicated structure and high price.

Contents of the invention

The purpose of the present invention is to improve and innovate the existing multifunctional bed set for popularization, and to provide an electric bed device and an operation control method that can make the electric bed have multiple dynamic and static bed positions, so that The structure of the electric bed device is simple and the cost is cheap. In addition to the general functions of adjusting the backrest and lifting the feet, it can also provide a large tilt angle and continuous automatic conversion of tilt and high and low beds, so as to promote the blood circulation of the human body through the use of gravity and help Patients with lung disease lie down, pat their chest and cough up phlegm, and it can be used for oxygen supply and health care to the head, feet, and brain.

In order to achieve the above-mentioned purpose, the present invention proposes an electric bed device, which mainly includes: a bed panel with adjustable backrest and foot lift, combined with a bed surface frame of the bed panel, and the front frame of the bed surface can be adjusted to adjust various beds. 1. The rear lifting device, a bed frame supporting the weight of the bed body and a microcomputer controller controlling the operation of the bed body. Wherein, each of the front and rear side lifting devices is respectively provided with two crank sets, left and right, and each crank set has two upper and lower cranks respectively, and the middle ends of the upper and lower cranks of the same set are respectively connected by rotary joints. . The upper ends of the two upper cranks in the front lifting device are respectively connected to the left and right sides of the front side of the bed frame by rotary joints, and the lower ends of the two lower cranks are also connected to the left and right sides of the front side of the bed frame by rotary joints. Right: The upper ends of the two upper cranks in the rear lifting device are respectively connected to the left and right of the rear side of the bed frame with rotary joints, and the lower ends of the two lower cranks are also connected to the rear side of the bed frame with rotary joints left and right of . The cross connection shaft of the upper crank on the front side is connected to the left and right upper cranks on the front side, the cross connection shaft of the lower crank on the front side is connected to the left and right lower cranks on the front side; the cross connection shaft of the upper crank on the rear side is connected to the left and right upper cranks on the rear side Crank, the left and right lower cranks of rear side lower crank horizontally connecting shaft horizontally connecting rear side. There is a screw lift connected between the upper and lower crank shafts on the same side, which pushes and pulls the two crank shafts on this side to open or close the upper and lower cranks on this side, and then drives the bed frame up and down on this side. shift.

In the above-mentioned electric bed device, preferably, the screw lifter of the lifting device is a horizontal screw lifter, wherein one end of the four variable diamond-shaped connecting rods is connected to the upper and lower cranks on the same side and the other end is connected to the horizontal lifting screw sleeve, Drive the horizontal lifting transmission by the horizontal lifting motor connected to the suspension floor to rotate the horizontal lifting screw embedded in the horizontal lifting bearings at both ends of the suspension floor and have opposite screw teeth on the left and right, forcing the horizontal lifting screw sleeves inserted on both sides of the horizontal lifting screw to move relatively. position, to change the angle of the rhombus connecting rod and then push and pull the crank on the side to connect the shaft to expand or close the upper and lower cranks on this side.

In addition, in the above-mentioned electric bed device, preferably, the screw lifter of the lifting device is a vertical screw lifter, which is provided with a lifter screw and a lifter screw sleeve respectively connected to the same side on the same side and the lower crank horizontal shaft, and the vertical The lift motor drives the straight lift transmission to rotate the straight lift screw sleeve, forcing the vertical lift screw rod in the straight lift screw sleeve to shift up and down, and then pushes and pulls the upper and lower crank transverse shafts on this side to expand or close the crank.

In addition, in the above-mentioned electric bed device, preferably, the electric bed device further includes a rotary device that can swing the bed body back and forth. In the rotary device, the rotary motor rotates the eccentric wheel to push and pull the rotary crankshaft back and forth, forcing the bottom crank to cross the shaft. Push and pull back and forth within the range of front and rear movement of the lower crank, and then drive the bed body to translate back and forth and swing back and forth.

In order to achieve the above-mentioned purpose, the present invention also proposes an electric bed device, which mainly includes: a bed panel with adjustable backrest and foot lift, combined with a bed frame of the bed panel, and jacking up one end of the bed frame so that various inclinations can be adjusted A lifting device for the bed, a bed frame supporting the weight of the bed body and a controller. Among them, the front end of the bed frame can be fixedly rotated, and the lifting device is connected between the bed frame and the bed frame at the rear end. The middle ends of the upper and lower cranks of the same group are respectively connected by rotary joints, the upper ends of the two upper cranks are respectively connected to the left and right of the bed frame by rotary joints, and the lower ends of the two lower cranks are also connected by rotary joints. It is connected to the left and right parts of the bed bottom frame, and the upper crank cross-connection shaft is cross-connected with the left and right upper cranks, and the lower crank cross-connection shaft is cross-connected with the left and right lower cranks, and the screw rod connected between the crank cross-joint shafts In the elevator, push and pull the crank to cross the shaft to open or close the crank, and then drive the rear end of the bed frame to tilt and shift.

In the above-mentioned electric bed device, preferably, the screw lifter of the lifting device is a horizontal screw lifter, wherein, one end of the four variable diamond-shaped connecting rods is connected to the upper and lower crank horizontal shafts, and the other end is connected to the horizontal lifting screw sleeve. The horizontal lifting motor of the suspension floor drives the horizontal lifting transmission to rotate the horizontal lifting screw embedded in the horizontal lifting bearings at both ends of the suspension floor and has opposite screw teeth on the left and right, forcing the horizontal lifting screw sleeves inserted on both sides of the horizontal lifting screw to move relative to each other. Changing the angle of the diamond-shaped connecting rod and then pushing and pulling the crank cross-joint shaft to open or close the crank.

In addition, in the above-mentioned electric bed device, preferably, the screw lifter of the lifting device is a vertical screw lifter, which is provided with a lifting screw and a lifting screw sleeve respectively connected to the upper and lower crank horizontal shafts, and the vertical lifting motor Drive the straight lift transmission to rotate the straight lift screw sleeve, forcing the vertical lift screw rod in the straight lift screw sleeve to shift up and down, and then push and pull the upper and lower crank horizontal joint shafts to expand or close the crank.

The effect of the present invention is actually to operate the lifting device and the lifting mechanism by the controller, so as to achieve one or more of the following effects:

1. Manually operate the lifting mechanism to make the back bed panel and leg bed panel flat, which can be used as a general flat bed.

2. Manually operate the lifting mechanism to adjust different elevation angles of the front and rear bed panels, which can be used as a function of comfortable postures such as backrest and foot lifting.

3. Manually operate the lifting device, which can adjust the height and tilt of the bed in a large range steplessly.

4. The automatic operation of the lifting device can change the various static beds that have been set, or the operation of various dynamic beds for the user to choose multiple times.

5. Manually operate the lifting device, which can adjust the inclined bed with a large elevation angle, and is equipped with a device to prevent the body from sliding down. It is used for patients with lung diseases who need to eliminate phlegm every day, and use it in the posture of lying upside down and patting the chest to cough up phlegm.

6. Manually operate the lifting device, which can adjust the inclined bed with a large elevation angle, for users lying down, a kind of oxygen supply to the brain on the head and feet, and relieve varicose veins, hemorrhoids, visceral sagging, spinal compression and other symptoms related to gravity .

7. When the operation time is set and the bed is operated in automatic mode, the tilting bed position is repeatedly cross-changed, so as to use the gravity to promote the human head and feet to rotate up and down to promote blood flow and prevent stroke.

8. When the bed body operates continuously in the dynamic bed position automatic control mode, it has the effect similar to that of a rocking bed, which can help sleepers fall asleep easily.

9. When the bed body operates continuously in the random bed position automatic control mode, the user will temporarily forget the troubles due to the unexpected change of psychology in order to divert attention.

10. When the bed body is in the interlocking condition of the middle bed position and the lifting device stops rotating, the crankshaft rotation device can be activated to drive the bed body to move back and forth and swing back and forth within the range of motion of the flat bed position.

Description of drawings

Fig. 1: It is the three-dimensional exploded schematic view of the bed body of the bilateral inclined bed group of the present invention.

Fig. 2: It is a side view and a front view schematic diagram of the bilateral tilting bed group of the present invention.

Fig. 3: It is a three-dimensional exploded view of the bed body of the unilateral inclined bed group of the present invention.

Fig. 4: It is a side view and a front view schematic diagram of the unilateral inclined bed group of the present invention.

Fig. 5 is a schematic diagram of the raising mechanism and lifting device of the bed set of the present invention.

Fig. 6: It is a schematic diagram of the bed position conversion and control mechanism of the bed group of the present invention.

Fig. 7: It is a schematic diagram of the crankshaft rotation device and the bed position swing of the bed group of the present invention.

Explanation of reference numbers

(1)………………Bed body (3)………………Bed surface structure

(5)……………Underframe structure (7)…………Back bed panel

(9)………Hip bed panel (11)………Leg bed panel

(13)…………Foot bed panel (15)……………… Lifting mechanism

(17)…………… Bed frame (19)…………… Bedside guard

(21)……………Bed end guard (23)………………Bed bottom frame

(25)…………Lifting device (27)…………………Crank

(29)…………Swivel joint (31)……………Limit control switch

(33)………Crank transverse shaft (37)………Microcomputer controller

(41)…Fixed swivel joint (43)……………Front stand

(45)……………… Rear foot stand (47)…………… Raise the motor

(49)………… Raise the speed changer (51)………… Raise the screw sleeve shaft

(53)…… Raising the shift screw (55)………… Raising the connecting rod

(57)……… Raise the horizontal axis (59)………… Raise the arm

(75)……………Low bed (77)………High elevation bed

(79)……………… High bed (81)………… Spring positioning pin

(101)...straight screw lift (103)...horizontal screw lift

(105)…………Diamond-shaped connecting rod (107)………Horizontal lifting screw

(109)…………Suspension floor (111)………Horizontal lifting motor

(113)…Transverse lift transmission (115)………Lateral lift bearing

(117)……Horizontal lift screw sleeve (121)………Straight lift motor

(123)…Straight lift transmission (125)………Straight lift screw sleeve

(127)...Straight lifting screw (129)...Bottom crank cross shaft

(131)…………Swing device (133)……………Swing motor

(135)…………Eccentric wheel (137)……………Rotary crankshaft

Detailed ways

In order to enable a further understanding of the structural composition and operating principle of the present invention, a more specific embodiment of the present invention is now given and described with reference to the accompanying drawings.

Considering the manufacturing cost and the selling price, the bed set of the present invention has the following two ways of inclination on both sides and one side for consumers to choose from:

As shown in Figure 1 and Figure 2:

The bilaterally inclined bed body 1 includes two parts, the bed surface structure 3 and the underframe structure 5. The bed surface structure 3 is divided into four sections: the movable back long panel 7, the fixed buttock bed panel 9 and the movable leg bed panel 11. Movable foot bed panels 13, each bed panel is combined with the two bed frames 17, and the traditional lifting mechanism 15 under the buttock bed panel 9 can make the back bed panel 7 adjust the elevation angle up and down, and the legs connected together The bed panel 11 and the foot bed panel 13 are arched or laid flat in the middle, and a headboard guard 19 and a bed tail guard 21 are respectively provided at the front and rear of the bed surface structure 3; Between the bed frame 23 under it, a lifting device 25 is respectively connected to the front and rear sections. Two upper and lower cranks 27, one end of the upper and lower cranks 27 are respectively connected by a rotary joint 29, and the other ends are also connected to the opposite side of the bed surface and the bed bottom frame 17, 23 by a rotary joint 29, and there are upper 1. The lower two crank horizontal joint shafts 33 are connected to the left and right cranks 27, and the straight or horizontal screw lifters 101, 103 connected to the crank horizontal joint shafts 33 push and pull the crank horizontal joint shafts 33 to open or close the crank 27 to drive the bed surface frame 17 Up and down displacement, because the two screw lifts 101, 103 can be controlled synchronously or individually by the microcomputer controller 37, so the height and tilt of the bed surface can be manually adjusted according to the user's needs, or the dynamic and static bed positions can be changed by automatic operation. Groups of spring positioning pins 81 are also arranged at the appropriate positions of the joints between the skeleton 17 and the bed bottom skeleton 23 and each crank 27 to limit the movement of the bed body beyond the predetermined range of motion and as a buffer adjustment when the crank 27 is opened and closed.

As shown in Figure 3 and Figure 4:

The bed frame 17 with unilateral inclination has a fixed swivel joint 41 at the front section of the bed frame 17, which is connected and located on the upper end of the front foot frame 43 of the underframe structure 5, and the bed frame 17 and the bottom frame 23 at the rear section are connected by a group Lifting device 25, this lifting device 25 comprises left and right two crank groups, each crank group has upper and lower two cranks 27 respectively, wherein the middle ends of upper and lower cranks 27 are respectively connected with rotary joint 29, and the other end is also Each is connected to the relative position of the bed surface and the rear section of the bed frame 17 and 23 with a rotary joint 29, and there are upper and lower two crank cross-joint shafts 33 connected to the left and right crank 27, and are connected to the crank cross-joint shafts 33. The straight or horizontal screw lifts 101, 103 push and pull the crank cross shaft 33 to expand or close the crank 27 and then drive the rear section of the bed surface frame 17 to leave the rear foot frame 45 to tilt and shift, because the screw lifts 101, 103 can be borrowed from the microcomputer controller 37 adjustment, so the larger inclination angle of the bed surface can be manually adjusted according to the user's needs, or the dynamic operation can be performed automatically.

As shown in Figure 5A:

The lift-up mechanism 15 below the buttocks bed panel 9 is the lift-up motor 47 driving the lift-up transmission 49 to rotate the front lift-up nut shaft 51 to force the displacement in the nut-up screw rod 53 to push and pull the lift-up connecting rod 55 to drive the lift-up horizontal The connecting shaft 57 further drives the lifting arm 59 to adjust the elevation angles of the back bed panel 7 , the leg bed panel 11 and the foot bed panel 13 .

As shown in Figure 5B:

One end of four variable diamond-shaped connecting rods 105 is connected to the upper and lower crank shafts 33, the other end is connected to the horizontal screw elevator 103 of the horizontal lifting screw sleeve 117, and the horizontal lifting motor 111 connected to the suspension base plate 109 drives the horizontal lifting. The transmission 113 rotates the horizontal lifting screw 107 embedded in the horizontal lifting bearings 115 at both ends of the suspension base plate 109 and has opposite screw teeth on the left and right, forcing the horizontal lifting screw sleeves 117 inserted on both sides of the horizontal lifting screw 107 to shift relative to each other, forcing the diamond-shaped connecting rod to change. 105 angles and then push and pull the crank traversing the shaft 33 to adjust the opening of the crank 27.

As shown in Figure 5C:

The vertical screw lifter 101 connected to the crank cross shaft 33 can also drive the vertical lift transmission 123 to rotate the vertical lift screw sleeve 125 by the vertical lift motor 121, forcing the vertical lift screw rod 127 in the vertical lift screw sleeve 125 to go up and down. Shift, and then push and pull the crank handle 33 to adjust the opening of the crank handle 27 .

As shown in Figures 6A and 6B (taking the bilateral tilting method as an example):

The solid line is the position of the low bed 75, and the dotted line is the position of the high elevation angle and the high bed 77`79 respectively; the position parameters obtained by sensing the high, middle and low limit control switches 31 between the displacement strokes of the lifting device 25 are arranged and combined, Convert it into a control program, input it into the memory of the microcomputer controller, and operate the motor driver to perform the following various static and dynamic bed positions through the comparison, calculation, timing, random, and sequence operations of the microcomputer controller according to the user's instructions Control mode:

1. Manual control:

Use the hand controller to operate the front and rear lifting devices 25 of the bed group respectively. In the displacement stroke of the upper and lower limit switches 31, adjust the direction of travel, press the button to go, release it to stop, and touch the limit switch 31. The upper and lower limit points can only go back, and the user can adjust the static bed position at will.

2. Static bed automatic control:

(1) Bed selection: Assume that the high, middle and low limit switch codes of the front (bedside) lifting device 25 displacement strokes are A, B, C, and the bed group rear (bed end) lifting device 25 displacement strokes The high, medium and low limit switch codes are D, E, F, then there are at least A+D (fixed high position at the head of the bed: fixed high position at the end of the bed), A+E, A+F, B+D (fixed middle position at the head of the bed) : fixed high position at the end of the bed), B+E (fixed middle position at the head of the bed: fixed middle position at the end of the bed), B+F, C+D, C+E, C+F, D+B (fixed high position at the end of the bed: fixed at the head of the bed There are 15 static bed position modes to choose from, including D+C, E+A, E+C, F+A (fixed low position at the end of the bed: fixed high position at the head of the bed), and F+B.

(2) Control method: If the above 15 kinds of static bed numbers are 01~15, select the static bed number according to the bed comparison table, press the number button of the hand controller, the controller will first determine the above demand command and then determine the motor travel direction, for example A (high head of the bed demand command)-B (the head of the bed stays in the middle position before the action), then the motor travel direction of the (bed head) lifting device 25 in front of the bed group is forward and upward, and C (low head of the bed demand command)- B (the head of the bed stays in the middle position before the action), then the direction of the motor is to reverse and go down, the motor of A-A is to stay in the original position, and the direction of the motor to move forward is the combination of A-B, A-C, B-C, D-E, D-F, E-F , the motor travel direction is reversed, there are C-A, C-B, B-A, F-D, F-E, E-D, and the motor stays in the original position, there are A-A, B-B, C-C, D-D, E-E, F-F and so on.

3. Automatic bed position control:

(1) Bed selection: According to the codes of the high, medium and low limit switches between the 25 displacement strokes of the front and rear lifting devices mentioned above are A, B, C and D, E, F, then a total of at least A+DUE (the head of the bed is fixed) High position: high at the end of the bed, move back and forth in the middle position), A+DUF (fixed high position at the head of the bed: move back and forth at the high and low position at the end of the bed), A+EUF, B+DUE, B+EUF, B+DUF, C+DUE, C +DUF, C+EUF, D+AUB, D+AUCD+BUC, E+AAUB, E+AUC, E+BUC, F+AUB, F+BUC, F+AUC, A+FUC+D (bedside, 22 types such as bed end cross raising and lowering), A+DUC+F (bed head and bed end parallel raising and lowering), B+EUC+F, A+DUB+E (bed head and bed tail parallel raising and lowering) Dynamic bed mode for selection.

(2) Control method: If the above 22 kinds of dynamic bed numbers are 16~37, select the dynamic bed number according to the bed comparison table, press the number button of the hand controller, and the controller will continue to reciprocate regularly under the mode command of the demand Run until the total timer is released and return to the flat bed position (the head and tail of the bed are placed in the C+F low bed position).

4. Random bed automatic control:

The position parameters obtained by sensing the high, medium and low limit control switches 31 between the displacement strokes of the lifting device 25 are matched with the motor speed parameters (such as fast, medium, and slow speeds) and the pause time of the forward and reverse conversion of the motor (such as 5 seconds, 10 seconds, 15 seconds) parameters, input microcomputer combined processing, and extend and expand more different change modes, then the user can press the random button of the hand controller to exercise various non-regular actions in a random manner. , The static bed position jumps and runs until the total timer is released and returns to the flat bed position, so that the user can change his mind due to expectations and divert his attention to temporarily forget his troubles.

5. Flat bed swing automatic control: (as shown in Figure 7)

A spring positioning pin 81 is provided at the appropriate position of the joints between the bed surface and the bed bottom frame 17, 23 and each crank 27 to serve as a buffer adjustment when the crank 27 shifts and to limit its range of motion. The bottom crank at one end of the bed body The middle end of the horizontal joint shaft 129 is also connected to a crank rotation device 131, which is the rotary motor 133 rotating the eccentric wheel 135 to push and pull the rotary crank shaft 137 to force the bottom crank horizontal joint shaft 129 to reciprocate and push and pull within the movable gap of the lower crank 27, thereby driving the bed body 1 to translate back and forth, Rock back and forth.

From the above, the structure of the present invention is novel and practical. In addition to the general functions of adjusting the backrest and lifting the feet, it can also provide tilting with a large elevation angle, high and low beds, and continuous and automatic conversion of various beds. The practical functions obviously surpass the traditional ones. It is progressive because of the approved structure of the previous application, and it is economical because of the simple structure and low cost.

The above descriptions are only some of the embodiments of the present invention, and certainly cannot limit the actual implementation scope of the present invention. All the various transformations or modifications made on the basis of the structural features and functions described in the above specification should be included in this document. The scope of patent rights for inventions.

Claims (7)

1. An electric bed device, mainly comprising: a bed panel with adjustable backrest and foot lift, combined with the bed frame of the bed panel, lifting the bed frame to adjust the front and rear lifting devices of various beds, and supporting the bed Body weight of a bed frame and a microcomputer controller to control the operation of the bed body; Wherein, each of the front and rear side lifting devices is respectively provided with two crank sets, left and right, and each crank set has two upper and lower cranks respectively, and the middle ends of the upper and lower cranks of the same set are respectively connected by rotary joints. ; The upper ends of the two upper cranks in the front lifting device are respectively connected to the left and right sides of the front side of the bed frame by rotary joints, and the lower ends of the two lower cranks are also connected to the left and right sides of the front side of the bed frame by rotary joints. Right: The upper ends of the two upper cranks in the rear lifting device are respectively connected to the left and right of the rear side of the bed frame with rotary joints, and the lower ends of the two lower cranks are also connected to the rear side of the bed frame with rotary joints left and right of The cross connection shaft of the upper crank on the front side is connected to the left and right upper cranks on the front side, the cross connection shaft of the lower crank on the front side is connected to the left and right lower cranks on the front side; the cross connection shaft of the upper crank on the rear side is connected to the left and right upper cranks on the rear side Crank, the lower crank on the rear side connects the shaft to the left and right lower cranks on the rear side; There is a screw lift connected between the upper and lower crank shafts on the same side, which pushes and pulls the two crank shafts on this side to open or close the upper and lower cranks on this side, and then drives the bed frame up and down on this side. shift. 2. The electric bed device according to claim 1, characterized in that: The screw lift of the lifting device is a horizontal screw lift, in which one end of the four variable diamond-shaped connecting rods is connected to the upper and lower cranks on the same side, and the other end is connected to the horizontal lifting screw sleeve, which is connected to the horizontal lifting motor on the suspension floor. Drive the horizontal lifting transmission to rotate the horizontal lifting screw embedded in the horizontal lifting bearings at both ends of the suspension floor and have opposite left and right threads, forcing the horizontal lifting screw sleeves inserted on both sides of the horizontal lifting screw to move relatively, so as to change the angle of the diamond-shaped connecting rod and then push and pull The crank on the side is transversely connected to the shaft to open or close the upper and lower cranks on the side. 3. The electric bed device according to claim 1, characterized in that: The screw lift of the lifting device is a straight screw lift, which is provided with a lift screw and a lift screw sleeve respectively connected to the upper and lower crank horizontal shafts on the same side. The sleeve forces the vertical lifting screw rod in the vertical lifting screw sleeve to move up and down, and then pushes and pulls the upper and lower cranks on this side to extend or close the crank. 4. The electric bed device according to any one of claims 1 to 3, characterized in that: The electric bed device also includes a rotary device that can make the bed swing back and forth. In the rotary device, the rotary motor rotates the eccentric wheel to push and pull the rotary crankshaft back and forth, forcing the bottom crank to move back and forth within the front and rear range of the lower crank. Drive the bed body to move back and forth and swing back and forth. 5. An electric bed device, mainly comprising: a bed panel that can adjust the backrest and feet, combined with the bed frame of the bed panel, a lifting device that jacks up one end of the bed frame to adjust various inclined beds, and supports the bed a body weight of a bed frame and a controller; Among them, the front end of the bed frame can be fixedly rotated, and the lifting device is connected between the bed frame and the bed frame at the rear end. The middle ends of the upper and lower cranks of the same group are respectively connected by rotary joints, the upper ends of the two upper cranks are respectively connected to the left and right of the bed frame by rotary joints, and the lower ends of the two lower cranks are also connected by rotary joints. It is connected to the left and right parts of the bed bottom frame, and the upper crank cross-connection shaft is cross-connected with the left and right upper cranks, and the lower crank cross-connection shaft is cross-connected with the left and right lower cranks, and the screw rod connected between the crank cross-joint shafts In the elevator, push and pull the crank to cross the shaft to open or close the crank, and then drive the rear end of the bed frame to tilt and shift. 6. The electric bed device according to claim 5, characterized in that: The screw lift of the lifting device is a horizontal screw lift, in which one end of the four variable diamond-shaped connecting rods is connected to the upper and lower cranks, and the other end is connected to the horizontal lifting screw sleeve, and the horizontal lifting motor is connected to the suspension floor to drive the horizontal lifting. The transmission rotates the horizontal lifting screw embedded in the horizontal lifting bearings at both ends of the suspension floor and has opposite screw teeth on the left and right, forcing the horizontal lifting screw sleeves inserted on both sides of the horizontal lifting screw to move relatively, so as to change the angle of the diamond-shaped connecting rod and then push and pull the crank. The shaft opens or closes the crank. 7. The electric bed device according to claim 5, characterized in that: The screw lift of the lifting device is a straight screw lift, which is provided with a lift screw and a lift screw sleeve respectively connected to the upper and lower crank horizontal shafts, and the vertical lift transmission is driven by the vertical lift motor to rotate the straight lift screw sleeve. Force the vertical lifting screw rod in the vertical lifting screw sleeve to move up and down, and then push and pull the upper and lower crank horizontal joint shafts to open or close the crank.

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