CN111956417B

CN111956417B - Nursing bed

Info

Publication number: CN111956417B
Application number: CN202010861112.1A
Authority: CN
Inventors: 王晓东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-08-03
Anticipated expiration: 2040-08-25
Also published as: CN111956417A

Abstract

The invention discloses a nursing bed convenient for a patient to defecate on the bed, and belongs to medical auxiliary equipment. Comprises a bed frame and a bed surface positioned on the bed frame; the bed surface comprises a front plate and a rear plate; the front plate comprises a fixed plate fixed on the bedstead, and a front plate, a front two plates and a front three plate are sequentially hinged behind the fixed plate; a top frame used for being propped under the front plate is arranged below the front plate, and the front end of the top frame is hinged on the bedstead; a push frame and a front electric pole are arranged below the top frame; the lower end of the push frame is hinged on the bedstead, and the upper end of the push frame is propped against the lower surface of the top frame; the lower end of the front electric pole is hinged on the bedstead, and the upper end of the front electric pole is hinged in the middle of the push frame. After the bed body is closed, the front electric pole tightly pushes the push frame, the push frame tightly pushes the top frame, and the top frame tightly pushes the front plate movable part, so that the bed surface can be kept flat and stable after the bed body is closed, and a person can lie comfortably.

Description

Nursing bed

Technical Field

The invention relates to medical auxiliary equipment, in particular to a nursing bed convenient for a patient to defecate on the bed.

Background

The Chinese patent discloses a convenient bed for patients (patent application number is 201910500137.6), which is characterized in that a bed board is divided into a front board and a rear board, the front board is formed by hinging a front fixed single board and a plurality of rear movable single boards, and a movable part of the front board can move back and forth; the top frame is arranged below the front plate, and the front part of the top frame is hinged with the front part of the bedstead; the front electric pole hinged at the lower part of the bedstead can realize up-and-down stretching by current control, the upper end of the front electric pole is hinged at the middle part of the top frame, and the front electric pole can control the rear part of the top frame to rotate up and down; the rear part of the top frame rotates downwards to enable the front plate movable part to move forwards and separate from the rear plate, so that the bed body is opened, the front plate forms a downward groove, a hole can be formed between the front plate and the rear plate, a sitting support is arranged in the hole, and a patient can lower legs and feet into the groove of the front plate without getting out of the bed, and can sit on the sitting support to relieve the bowels freely and comfortably; the rear part of the top frame rotates upwards to enable the movable part of the front plate to move backwards, and the front plate and the rear plate can be abutted together to close the bed body to form a bed surface for a patient to lie.

However, the above-mentioned nursing bed has the following disadvantages:

in the limited space of lower part before the bed body, the electric actuator that has automatically controlled flexible performance that can install all has certain part transmission clearance and elastic deformation as preceding pole, its auto-lock action can have certain back-off under the pressure of bearing a burden after preceding pole shut down, and the extreme heavy burden that the personnel lie or even the personnel stand, walk about, jump etc. will be undertaken to the bed surface, it is very poor to rely on the self-locking effect support roof-rack of preceding pole to push up the movable part effect of front bezel, the bed surface can appear sunken and vibrate, make the unable comfortable lying of people.

Disclosure of Invention

In order to solve the technical problem, the invention provides a nursing bed which is convenient for a patient to defecate on the bed. Through setting up and pushing away the frame device, after the bed body is closed, the frame is pushed tightly in the top to push away the frame and push away the tight roof-rack in top, again with the roof-rack top tight front bezel movable part, guarantee that the bed body is closed after, the bed surface can keep leveling firm, makes the people can comfortable lie.

The invention is realized by the following technical scheme: a nursing bed comprises a bed frame and a bed surface positioned on the bed frame; the bed surface comprises a front plate and a rear plate; the front plate comprises a fixed plate fixed on the bedstead, and a front plate, a front two-plate and a front three-plate are sequentially hinged behind the fixed plate; a top frame used for being propped under the front plate is arranged below the front plate, and the front end of the top frame is hinged on the bedstead; a push frame and a front electric pole are arranged below the top frame; the lower end of the push frame is hinged on the bedstead, and the upper end of the push frame is propped against the lower surface of the top frame; the lower end of the front electric pole is hinged on the bedstead, and the upper end of the front electric pole is hinged in the middle of the push frame.

It further comprises the following steps: when the upper end of the push frame tightly props against the top frame, the axis of the push frame inclines forwards 1-30 degrees on the basis of being vertical to the ground.

When the upper end of the push frame tightly pushes the top frame, the axis of the push frame inclines forwards 3 degrees to 15 degrees on the basis of being vertical to the ground.

The push frame comprises a lower shaft lever, a push connecting rod, an upper push rod, a push connecting lug and an inclined rod; the upper push rod is welded with the push connecting rod, and the push connecting rod is welded on the lower shaft rod; two ends of the inclined rod are welded on the push connecting rod, and the middle part of the inclined rod is welded with the push connecting lug; the upper push rod is propped against the lower surface of the top frame; the push connecting lug is hinged with the upper end of the front electric pole through a pin shaft; the two ends of the lower shaft lever are hinged with the corresponding side push seats, the left push seat and the right push seat are welded at the lower ends of the two corresponding side inclined pull rods, and the upper ends of the inclined pull rods are connected with the lower surface of the bed edge; the left and right push seats are connected with the rear ends of the corresponding side flat pull rods, and the front ends of the two flat pull rods are connected with the bedstead.

The rear end of the top frame is hinged with a lengthening device, and the top frame and the lengthening device are propped under the front plate together.

The lengthening device comprises a folding rod, a folding shaft and a folding connecting lug; the two sides of the rear end face of the top frame are respectively welded with the folding connecting lug, and the upper part of the folding connecting lug is provided with a connecting hole; the upper part of the front part of the folding rod is also provided with a connecting hole, and the folding rod and the connecting hole of the folding connecting lug are hinged through the folding shaft; when the folding rod is driven by the top frame to be upwards pushed under the front two plates, the front lower end of the folding rod is propped against the lower side of the rear part of the top frame, and the folding rod is pushed to the joint part of the front two plates and the front three plates.

The front two plates are manufactured on the basis of two side rods, the two side rods and the metal rods are welded into a frame body, and the frame body is connected with the wood plates; the front part of the two side rods is hinged with the rear part of one side rod, the rear part of the two side rods is hinged with the front part of the three side rod, and the rear part of the two side rods is hinged with the rear part of the transformation assisting plate.

The rear plate is manufactured on the basis of a rear edge rod, the rear edge rod and the metal rod are welded into a frame body, and the frame body is connected with the wood plate; the front part of the rear pole is hinged with the bed side rotating shaft seat, the middle part of a frame body shaft formed by welding the rear pole and angle steel is hinged with the upper end of a rear electric pole, and the lower end of the rear electric pole is hinged with a rear pull rod connected to the bed frame.

The two sides of the front plate are provided with blocking devices; the stopper comprises a bolt, a pipe seat and a pressure spring; through holes from top to bottom are formed in the edges of the two sides of the front plate, and the tube seats are fixed on the edge of the lower side of the front plate and are opposite to the through holes of the front plate; the upper part of the bolt is inserted into the through hole of the front plate, and the lower part of the bolt is positioned in the tube seat; the pressure spring is mounted at the bottom of the pipe seat and jacks up the stud; the outward side of the bolt is provided with an outward convex transverse column, and one side of the tube seat is provided with a long strip-shaped guide groove opposite to the outward convex transverse column; the outer end of the outer convex transverse column penetrates through the elongated guide groove, and is opposite to the bed edge of the bed frame up and down.

The blocking devices are arranged on two sides of the front two plates and the front three plates.

Compared with the prior art, the invention has the beneficial effects that: after the bed body is closed, the movable part of the front plate can be kept flat and stable, so that a person can lie comfortably on the bed surface.

Drawings

FIG. 1 is a front view of the bed of the present invention assembled in a closed state; FIG. 2 is a top view of the bed of the present invention assembled in a closed state; FIG. 3 is a left side view of the bed assembly of the present invention in a closed state; FIG. 4 is a front view of the bed of the present invention assembled in an open state; FIG. 5 is an assembled top view of the bed body of the present invention in an open state; FIG. 6 is a front view of the guide frame assembly of the present invention; FIG. 7 is an assembled left side view of the guide frame of the present invention; FIG. 8 is a top view of the guide frame assembly of the present invention; FIG. 9 is a front elevational view of the present invention extender assembly; FIG. 10 is a left side elevational view of the present extender assembly; FIG. 11 is a top view of the extender assembly of the present invention; FIG. 12 is a front view of the dirt seal assembly of the present invention; FIG. 13 is a left side elevational view of the dirt trap assembly of the present invention; FIG. 14 is a top view of the dirt seal assembly of the present invention; 15 is the assembly front view of the push frame and the push base of the invention; FIG. 16 is a left side elevational view of the push frame and push base assembly of the present invention; FIG. 17 is a top view of the push frame and push base assembly of the present invention; FIG. 18 is a front elevational view of the spring connecting web assembly of the present invention; FIG. 19 is a left side elevational view of the spring connecting web assembly of the present invention; FIG. 20 is a top plan view of the spring connecting bar assembly of the present invention; FIG. 21 is a front view of the pulley push frame assembly of the present invention; FIG. 22 is a left side elevational view of the pulley push frame assembly of the present invention; FIG. 23 is a top plan view of the pulley push frame assembly of the present invention; FIG. 24 is a front elevational view of the assembly of the track transfer headframe of the present invention; FIG. 25 is a left side elevational view of the assembly of the track transfer headframe of the present invention; FIG. 26 is a top plan view of the assembly of the track transfer headframe of the present invention; FIG. 27 is a front elevational view of the seat assembly of the present invention; FIG. 28 is a top plan view of the seat assembly of the present invention; FIG. 29 is a left side elevational view of the seat assembly of the present invention; FIG. 30 is a right side view of the seat assembly of the present invention; FIG. 31 is a front elevational view of a panel assembly in accordance with the present invention; FIG. 32 is a left side elevational view of the present invention in a one-piece panel assembly; FIG. 33 is a top plan view of a panel assembly in accordance with the present invention; FIG. 34 is a front elevational view of a second panel assembly of the present invention; FIG. 35 is a left side elevational view of a second panel assembly of the present invention; FIG. 36 is a top plan view of the second panel assembly of the present invention; FIG. 37 is a front view of the modified three plate assembly of the present invention; FIG. 38 is a left side view of the modified three plate assembly of the present invention; FIG. 39 is a top view of the modified plate assembly of the present invention; FIG. 40 is a front elevational view of the modified back plate assembly of the present invention; FIG. 41 is a left side elevational view of the modified back plate assembly of the present invention; FIG. 42 is a top plan view of the modified back plate assembly of the present invention; FIG. 43 is a front view of a counterbore assist plate of the present invention; FIG. 44 is a left side view of the counterbore assist plate of the present invention; FIG. 45 is a top view of a counterbore assist plate of the present invention; FIG. 46 is a front elevational view of the present invention barrier assembly; FIG. 47 is a left side elevational view of the present invention barrier assembly; FIG. 48 is a top view of the present invention barrier assembly; FIG. 49 is a front view of a retractor assembly of the present invention; FIG. 50 is a left side elevational view of the retractor of the present invention; FIG. 51 is a top view of a retractor assembly of the present invention; fig. 52 is a dc control circuit diagram of the present invention.

In the figure: 1-front block, 2-front rib, 3-front leg, 4-fixed plate, 5-bedside, 6-top frame, 7-front plate, 8-push frame, 9-front two plates, 10-change-assistant plate, 11-lengthener, 12-catch hook, 13-front three plates, 14-guide frame, 15-middle support, 16-connecting crank plate, 17-rear plate, 18-rear electric pole, 19-rear support, 20-rear leg, 21-rear rib, 22-rear block, 23-front support, 24-front electric pole, 25-flat pull rod, 26-diagonal pull rod, 27-lifting rail, 28-middle electric pole, 29-rail-stabilizing rod, 30-rear pull rod, 31-side pulley, 32-bottom pulley, 33-vertical plate, 34-frame body, 35-shaft sleeve, 36-short plate, 37-folding rod, 38-folding shaft, 39-folding connecting lug, 40-adjusting bolt, 41-adjusting pad, 42-connecting shaft tube, 43-crank shaft, 44-cover plate, 45-baffle holder, 46-lower shaft lever, 47-pushing connecting rod, 48-upper pushing rod, 49-pushing connecting lug, 50-inclined rod, 51-pushing seat, 52-rib spring lug, 53-rib plate spring, 54-rib body, 55-rail pulley, 56-upper wheel rod, 57-bending pushing rod, 58-rail replacing block, 59-frame body, 60-guide plate, 61-bottom rib, 62-lifting lug, 63-column plate, 64-dirt placing plate, 65-gauge rod, 66-seat plate, 67-connecting shaft, 68-upper frame, 69-bottom bracket, 70-elastic plate, 71-upper support, 72-seat shell, 73-one side rod, 74-one sleeve, 75-two side rod, 76-sleeve, 77-three side rod, 78-rear side rod, 79-rear sleeve, 80-counter bore assistant plate, 81-stud, 82-tube seat, 83-pressure spring, 84-retraction rod, 85-retraction pole, 86-support connecting rod, 87-front motor, 88-middle motor, 89-rear motor, 90-opening key, 91-closing key, 92-support key, 93-support key, 94-lifting key, 95-lowering key, 96-touch key one, 97-touch key two, 98-touch key three, 99-touch key four, 100-touch key five, 101-protection key one and 102-protection key two.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figures 1 to 5 of the drawings,

a nursing bed comprises a bed frame, a bed surface, a bed body opening and closing system, a sitting support lifting system, a rear plate 17 lifting system, an electric control system and other auxiliary replacing facilities. Wherein the bed surface is composed of a back plate 17 and a front plate.

Firstly, the bed frame is composed of left and right bed edges 5, a front baffle 1, a rear baffle 22, a front leg 3, a rear leg 20, a front support 23, a middle support 15, a rear support 19, a front rib 2 and a rear rib 21. A sliding groove is arranged in the bedside 5, and two ends of the middle support 15 are respectively welded below the middle part of the bedside 5. The front part of the bed edge 5 is welded with a front baffle 1, and the left side and the right side of the back of the front baffle 1 are respectively welded with a connecting lug. The connecting parts at the two ends of the back stop 22 can be inserted into the slots at the back part of the bed edge 5 and connected by bolts so as to be convenient for dismounting. The lower part of the front part and the lower part of the rear part of the bed edge 5 are welded with turning steel connecting ends which are respectively connected with the two front legs 3 and the two rear legs 20 by bolts so as to be convenient for disassembly and transportation. For better firmness, the four bed legs can also be directly welded with the bed edge 5.

The back plate 17 is arranged above the rear parts of the left and right bed sides 5, two sides of the front part of the back plate are hinged with a rotating shaft seat welded above the middle parts of the left and right bed sides 5 through rotating shafts fixed on the back plate, the rear part of the back plate can be lifted upwards or leveled, and a convex edge is arranged in the middle of the front end of the back plate.

And the front plate is formed by connecting a plurality of single plates and comprises a fixed plate 4, a front plate 7 as a front plate movable component, a front two plate 9, a front three plate 13 and a left and right side auxiliary variable plate 10 capable of limiting the movement path of the single plates relative to the guide front plate. The fixing plate 4 is placed across the front part of the bed edge 5 and welded thereon. The rotating shaft seats are welded on the upper portion of the bedside 5 and positioned behind the fixed plate 4, and can be respectively hinged with the connecting portions on two sides of the front portion of the front plate 7 through the rotating shafts. The rotating shaft close to the outer side of the rotating shaft seat is provided with a pin hole, and a cotter pin can be inserted to prevent the rotating shaft from moving. The front plate 7 is slightly shorter but closer to the distance between the left and right bed sides 5, above it. The two sides of the rear part of the front plate 7 are provided with connecting lugs which are hinged with the connecting parts at the two sides of the front part of the front two plates 9 through a rotating shaft. The connecting parts at the two sides of the rear part of the front two plates 9 are respectively hinged with the connecting lugs at the two sides of the front part of the front three plates 13 by a rotating shaft and are also hinged with the connecting parts at the rear parts of the left and right auxiliary variable plates 10. The rear parts of the left and right transformation-assisting plates 10 are provided with screw holes, and the corresponding positions of the rotating shafts are provided with annular grooves, so that the screws can be screwed in to abut against the rotating shafts to prevent the transformation-assisting plates 10 from falling off. The front ends of the left and right variable-assist plates 10 are correspondingly hinged with a rotating shaft seat welded above the left and right bed sides 5 through rotating shafts. The rotating shaft close to the outer side of the rotating shaft seat is also provided with a pin hole, and a cotter pin can be inserted to prevent the rotating shaft from moving. The front two plates 9 are closely attached to the inner sides of the two transformation assisting plates 10, and the length of the side-by-side plates is slightly smaller than but close to the distance between the left and right bed sides 5 and is arranged above the distance between the left and right bed sides. The front three panels 13 are slightly shorter at their longest ends than, but close to, the spacing between the left and right bed sides 5, and are centered thereabove. The left side and the right side of the rear part of the front three plate 13 are respectively provided with a connecting leg which is hinged with the guide frame 14 through a rotating shaft. Therefore, the front part of the front plate 7 and the rotating shaft seat connected with the front part of the transformation assisting plate 10 and the rotating shaft seat connected with the front part of the front plate 7, the rear part of the front plate 7 and the front part of the front two plates 9, the rear part of the front two plates 9, the front part of the front three plates 13 and the rear part of the transformation assisting plate 10 can rotate back and forth relatively.

As shown in fig. 6, 7 and 8,

the guide frame 14 is an auxiliary component, and is composed of a frame body 34, four side pulleys 31, four bottom pulleys 32, two side vertical plates 33, two side short plates 36, and left and right shaft sleeves 35. The front parts of both sides of the guide frame 14 are respectively provided with a notch which can respectively accommodate the connecting leg at the rear part of the front three plate 13 and is hinged by a rotating shaft. The front part of the front three-plate 13 can rotate up and down, and the front three-plate 13 and the guide frame 14 can move back and forth. Both sides of the guide frame 14 are close to the side walls of the inner chutes of the corresponding side bed sides 5, and when the front three plates 13 move backwards from the inclined state, the guide frame is used for guiding and preventing the front three plates from being clamped due to deviation. The two side vertical plates 33 are welded below the frame body 34, and the front part and the rear part of the outer side of each side vertical plate 33 are respectively welded with a pulley frame so as to install four side pulleys 31, so that the frictional resistance between the four side pulleys and the side wall of the sliding groove in the bedside 5 can be reduced; the pulley frames are welded at the front and the rear parts of the two sides below the frame body 34 respectively to install four bottom pulleys 32, so that the frictional resistance with the lower wall of the chute in the bedside 5 can be reduced. Of course, pulleys facing the upper wall of the chute in the bedside 5 may be installed on both sides of the front portion of the frame body 34. A left short plate 36 and a right short plate 36 are further welded below the frame body 34 and close to the gap, straight shaft holes are formed in the short plates 36 and the vertical plate 33 on the other side of the gap, and a rotating shaft of a connecting leg at the rear part of the hinged front three plate 13 can be inserted. Because the outer side of the vertical plate 33 is shielded by the inner chute of the bedside 5, the bolt is difficult to install on the rotating shaft at the outer side, so that the rotating shaft is easy to move and scrape or fall inwards. The shaft sleeves 35 can be welded at the rotating shaft holes at the inner sides of the two short plates 36 and inserted into the rotating shaft until the rotating shaft is inserted into the corresponding hole of the side vertical plate 33. The side of the shaft sleeve 35 is provided with a screw hole, the corresponding position of the rotating shaft is provided with an annular groove, and a screw can be screwed in to abut against the annular groove to prevent the rotating shaft from moving. The rear baffle 22 is connected with the bedside 5 by bolts, which is convenient for disassembly and assembly, so that the guide frame 14 can be disassembled and assembled from the chute port at the rear end of the bedside 5.

Fourthly, a bed body opening and closing system,

the device comprises a front electric pole 24, a push frame 8, a top frame 6, an extender 11, a stop hook 12 and related auxiliary components.

1. The structural components and structural relationships that need to be explained first:

the front electric pole 24, the later-mentioned middle electric pole 28 and the later-mentioned rear electric pole 18 are electric devices with electric control telescopic performance, and are electric push rods or electric cylinders for converting the rotary motion of a motor into the forward and reverse linear motion of the push rods, and all the electric push rods or electric cylinders have self-locking measures such as a worm gear transmission structure or a nut screw transmission structure with a shutdown self-locking function.

The lower welding of the middle part of the front baffle 1 is provided with a turning steel connecting end, the upper end of the front rib 2 is connected by a bolt, and the front baffle can be conveniently detached and is beneficial to transportation. The middle part of the front rib 2 is welded with the middle part of the front support 23, and two ends of the front support 23 are respectively welded with the two front legs 3. The front rib 2 is a channel steel with a backward opening. Shaft holes are arranged on two side plates at the lower end of the front rib 2, and are hinged with the lower end of the front electric pole 24 through a pin shaft.

As shown in fig. 1, 15, 16 and 17,

the push frame 8 is composed of a lower shaft rod 46, a push connecting rod 47, an upper push rod 48, a push connecting lug 49 and an inclined rod 50, and a structure schematic diagram of a push seat 51 hinged with the push frame is also shown in the figure. The upper push rod 48 is welded with the push connecting rod 47, the push connecting rod 47 is welded on the lower shaft lever 46, both ends of the lower shaft lever 46 are hinged with a push seat 51 connected on the bedstead, and the upper part of the push frame 8 can rotate around the center of a shaft hole of the push seat 51; the lower shaft 46 has pin holes at both ends for preventing the lower shaft from moving relative to the pushing base 51 by using cotter pins. The push seats 51 are respectively connected with the diagonal draw bars 26 and the horizontal draw bars 25 which are connected on the bed frame, the lower surfaces of the left and right bed sides 5 are respectively welded with a crutch steel connecting end, the upper ends of the two diagonal draw bars 26 are respectively connected by bolts, and the left and right push seats 51 are respectively welded at the lower ends of the two diagonal draw bars 26; the rear ends of the two horizontal pull rods 25 are welded with connecting plates and are respectively connected with the corresponding side push seats 51 through bolts; the front ends of the two horizontal pull rods 25 are connected with the lower part of the front rib 2 or the middle part of the front support 23 by bolts; a connecting rod is respectively fixed between the left and right push seats 51 and the corresponding side of the front support 23 to enhance the front-back stability of the front leg 3. Thus, the push base 51 is positioned stably in three-dimensional directions of up-down, front-back, and left-right. The aforesaid many places are bolted connection, are the dismouting transportation of being convenient for. The two ends of the inclined rod 50 are welded on the push connecting rod 47, and can play a role in reinforcement. The upper part or the lower part of the middle part of the inclined rod 50 is welded with a pushing lug 49 and is hinged with the upper end of the front electric pole 24 through a pin shaft, the lower end of the front electric pole 24 is hinged with the lower part of the front rib 2 through a pin shaft, and the front electric pole 24 can stretch and pull to push the upper part of the pushing frame 8 to rotate in a reciprocating mode. The inclined rod 50 can move the position of the push connecting lug 49 backwards due to the inclined arrangement, so that the installation space of the front electric pole 24 can be enlarged.

Preferably: an angle steel is welded on the rear side of the front support 23, one edge of the angle steel faces backwards, and front-rear rigidity is mainly enhanced to prevent the front support 23 from deforming due to the fact that the thrust of the front electric pole 24 is too large.

The top frame 6 is arranged below the front plate, a left connecting rod, a right connecting rod and a rear connecting rod are welded into a frame body, and a plane is arranged above the frame body. The connecting parts at the two sides of the front end of the top frame 6 are respectively hinged with the connecting lugs welded at the two sides of the back of the front baffle 1 by pin shafts, so that the back part of the top frame 6 can rotate up and down around the pin shafts. Or two connecting lugs can be respectively welded at the two sides under the fixed plate 4 to be connected with the front end of the top frame 6. The left and right connecting rods of the top frame 6 can be made of square steel tubes besides angle steel, and the middle part of the connecting rods can be welded with a reinforcing rib.

The front plate movable component is provided with two side lower parts with stop hooks 12, the stop hooks 12 are provided with downward vertical rod bodies, the outer end surfaces of the rod bodies are flush with the outer end surfaces of the two sides of the corresponding front plate movable component, and the bottom ends of the stop hooks 12 at the two sides are provided with convex parts extending out of the outer bed edge 5 to form a straight hook shape. After the bed body is closed, the top frame 6 pushes up the front plate movable component to rise to the right position, and the outward protruding parts of the left and right side blocking hooks 12 respectively abut against the lower surfaces of the left and right bed edges 5 so as to limit the upward moving height of the front plate movable component. Particularly, the blocking hooks 12 are respectively welded below the rear parts at the two sides of the front plate 7 and below the front parts at the two sides of the front three plates 13; the stopping hooks 12 can be welded below the two sides of the front two plates 9, and the outward convex parts of the stopping hooks are lengthened and can be propped below the left and right bed sides 5 through the lower parts of the auxiliary variable plates 10.

2. Opening of the bed:

the front pole 24 is contracted, the front part of the push frame 8 rotates forwards and downwards, the rear part of the top frame 6 rotates forwards and downwards, and the front plate movable part moves forwards and downwards under the action of self weight. To ensure the action is reliable, the front part of the push frame 8 should tension the front two plates 9 by a tension spring. At this time, the rear part of the front plate 7 rotates forward and downward, and finally stands obliquely rearward and downward. The front two plates 9 move to the front lower part; the front part of the front three-plate 13 rotates forwards and downwards and simultaneously drives the guide frame 14 to move forwards, finally the front three-plate 13 is inclined forwards and downwards, and the front end of the guide frame 14 abuts against a partition plate of a track on the inner side of the bedside 5. The rear part of the transformation assisting plate 10 rotates forwards and downwards and finally stands backwards and downwards obliquely. Here, the deflection-assisting plate 10 participates in restricting the moving path that guides the front two plates 9 and the front three plates 13 forward and downward. Because the distance between the upper and lower rotating axes of the transformation assisting plate 10 is equal to the distance between the upper and lower rotating axes of the previous plate 7, and the distance between the front and rear rotating axes of the previous plate 9 is equal to the distance from the rotating axis of the upper end of the previous plate 7 to the rotating axis of the upper end of the transformation assisting plate 10, a four-point connecting line of the upper and lower rotating axes of the transformation assisting plate 10 and the rotating axis of the upper and lower ends of the previous plate 7 on the same front and rear tangent planes can form a changeable parallelogram structure, so that the previous two plates 9 can be translated to the front lower part, and the changing process is stable. The distance between the upper and lower rotating axes of the front three plate 13 is basically equal to the distance between the upper and lower rotating axes of the front plate 7, so that the front plate can form a groove which is similar to an isosceles trapezoid from side to side and gradually goes from shallow to deep, and finally the bed body is opened. This not only facilitates the patient to lower his legs and feet to make his sitting position comfortable, but also makes the patient more easily adapt to the changing process.

Therefore, the patient can conveniently and quickly sit on the seat support without taking the trouble to get out of the bed, and the toilet is used for freely and comfortably defecating on the toilet. If the back plate 17 is pushed up, the back of the patient can lean. After the bed is released, the back plate 17 is lowered, and the bed body can be closed by slightly lifting legs of a patient lying on the back plate 17 or slightly supporting the legs of the patient by other people, so that the bed surface is quickly restored for the patient to lie.

For the bed body to be opened, each part of the front plate has different target positions, and for the sake of clarity, the attached drawings also show a front assembly view of the bed body in the opened state shown in fig. 4 and a top assembly view of the bed body in the opened state shown in fig. 5.

3. Regarding closing of the bed:

the front electric pole 24 is extended, the upper part of the pushing frame 8 can be pushed to rotate towards the back upper side, the pushing top frame 6 is pushed, the front pin shaft of the top frame 6 serves as a fulcrum, the combination part of the front plate 7 and the front two plates 9 is pushed towards the back upper side, the rear part of the front plate 7 rotates towards the back upper side, the front two plates 9 and the front three plates 13 are driven to move towards the back upper side, the guide frame 14 is driven to move backwards, and the rear part of the change assisting plate 10 is driven to rotate towards the back upper side. The change-assistant plate 10 also participates in limiting the moving path of guiding the front two plates 9 and the front three plates 13 to the back and up, so that the moving process is stable. Finally, the movable part of the front plate is pushed to rise to the proper height, the stop hook 12 is hooked under the bedside 5, the front electric pole 24 is stopped, the push frame 8 tightly pushes the top frame 6, the top frame 6 tightly pushes the movable part of the front plate, the bed surface is flat, and the bed body is closed.

When the bed body is opened, the joint of the front plate 7 and the front plate 9 moves to the front lower part, and the top frame 6 is pressed from the upper part. The rear part of the top frame 6 is blocked by the lower shaft rod 46 or the ground, so that the backward arrangement length of the top frame 6 is limited. Therefore, the rear part of the top frame 6 is difficult to push to the joint part of the front two plates 9 and the front three plates 13 when being pushed upwards, and the bed surface is easy to vibrate or collapse after the bed body is closed. An extension 11 is provided for this purpose.

As shown in connection with figures 9, 10 and 11,

the lengthening device 11 is composed of a folding rod 37, a folding shaft 38, a folding connecting lug 39, an adjusting bolt 40 and an adjusting pad 41. A folding lug 39 is welded on each side of the rear end face of the cross bar at the rear part of the top frame 6, the upper part of the folding lug 39 is provided with a connecting hole, the upper part of the front part of the folding rod 37 is also provided with a connecting hole, the folding lugs are hinged by a folding shaft 38, and the rear part of the folding rod 37 can rotate up and down. When the folding rod 37 is driven by the top frame 6 to move upwards and is pressed by the front two plates 9, the front lower end of the folding rod 37 can prop against the lower side of the rear part of the top frame 6. The lower part of the folding lug 39 can extend downwards slightly than the lower edge of the rear cross bar of the top frame 6 to enhance the supporting force, and the front lower end of the folding rod 37 can prop against the rear lower side of the front wall of the folding lug 39, so that the top frame 6 can drive the folding rod 37 to straighten and prop up the front plate movable part. When the rear part of the top frame 6 is upwards, the rear part of the top frame is extended backwards and can be pushed to the vicinity of the joint part of the front two plates 9 and the front three plates 13. At the moment, the stop hook 12 below the front plate is just hooked below the bedside 5, the front electric pole 24 is stopped and self-locked, and the bed body is closed. When the rear part of the top frame 6 is downward, the folding rod 37 meets the blocking of the lower shaft rod 46, and the rear part of the folding rod 37 can be folded to the rear upper part by taking the folding shaft 38 as the center, so that the downward rotating range of the rear part of the top frame 6 can not be influenced, and enough space can be reserved for the joint part of the front plate 7 and the front two plates 9 to move to the front lower part.

Preferably: when the top frame 6 pushes up the driving folding rod 37, the connecting rod at the rear part of the top frame 6 has certain elastic deformation, and reinforcing rods which are obliquely arranged can be welded between the middle part of the connecting rod at the rear part of the top frame 6 and the middle parts of the connecting rods at the two sides for improving the strength of the connecting rod.

Preferably: in practice, it is difficult to push the front plate upward by the rear part of the folding rod 37 and the top frame 6, and to push the front plate and the rear part of the front two plates 9 tightly at the same time. For this purpose, a certain gap is left between the front lower end of the folding rod 37 and the inner lower side of the folding lug 39, and an adjusting pad 41 is fixed on the rear side of the front wall of the folding lug 39 by an adjusting bolt 40. The lower part of the adjusting pad 41 is provided with an inclined surface and a groove upwards, the threaded end of the adjusting bolt 40 passes through the groove and is screwed into the threaded hole on the front wall of the folding lug 39, and the adjusting pad 41 is pressed tightly by the rear annular convex part. The front lower end of the folding rod 37 can be abutted against the inclined plane at the lower part of the adjusting pad 41, and the upward pushing degree of the folding rod 37 can be adjusted by adjusting the upper and lower positions of the adjusting pad 41. A screw hole can be arranged at the front lower part of the folding lug 39, a hole is correspondingly arranged at the rear cross bar of the top frame 6, another adjusting bolt 40 can be screwed in from the front part of the folding lug 39, and the lower part of the top adjusting pad 41 moves backwards, so that the upward pressing degree of the folding rod 37 can be more conveniently adjusted and controlled. The adjusting pad 41 can also be made into a structure with certain elasticity and certain bending, and the upward pressing degree of the folding rod 37 can also be adjusted and controlled.

In the closing process of the bed body, the movable part of the front plate is pushed upwards to a proper position easily. Because the bed body is closed, the movable part of the front plate can bear the possible impact of standing, walking or even jumping of a person on the bed surface, if the electric pole 24 directly props against the top frame 6 to prop against the movable part of the front plate, the bed surface cannot be kept flat and stable only by the self-locking force of the electric machine which can be adopted by the electric pole 24. The problem is solved by adopting a mode that the pushing frame 8 is used for tightly pushing the top frame 6, and then the top frame 6 drives the folding rod 37 to tightly push the movable part of the front plate together. After the bed body is closed, the push frame 8 is in a forward slightly inclined state taking the vertical direction of the bed body as a reference to push the rear part of the top frame 6 tightly. The structure of the push frame 8 has great bearing rigidity and can bear most or all of the pressure applied by the movable parts of the front plate and the loaded objects on the front plate. The requirement on the self-locking force of the front electric pole 24 can be greatly reduced or eliminated, the push frame 8 can be kept stable only by the aid of the small self-locking force of the front electric pole 24 or even without the aid of the front electric pole 24, and the bed surface is kept flat and stable.

After the bed body is closed, the selection of the proper inclination angle when the push frame 8 is pushed upwards is analyzed and determined:

at the beginning of the closing process of the bed body, the pushing frame 8 and the top frame 6 are parallel, the front electric pole 24 pushes the upper part of the pushing frame 8 to rotate backwards and upwards, and the pushing frame 8 pushes the rear part of the top frame 6 to rotate backwards firstly. Because the connecting pin shaft at the front end of the top frame 6 can not move backwards, the upper push rod 48 slides backwards along the bottom surface of the top frame 6, and frictional resistance along the bottom surface direction of the top frame 6 is formed. Along with the gradual increase of the included angle between the push frame 8 and the top frame 6, the rear part of the top frame 6 gradually takes the upward rotation as the main part. The push frame 8 is gradually pushed towards the state close to the vertical state with the bottom surface of the top frame 6, the erecting direction of the push frame 8 is increasingly close to the direction of the downward pressure of the top frame 6, the upward push rod 48 is gradually increased under the positive pressure transmitted and applied by the top frame 6, and then the friction force is continuously increased. The frictional force exerted by the head frame 6 to resist rearward movement of the upper push rod 48 is maximised immediately before closure of the bed is complete. After the bed body is closed, the front electric pole 24 is stopped, if the push frame 8 is close but not in a vertical state, the push frame is pressed by the top frame 6, the upper push rod 48 tends to move forwards, and meanwhile, a backward friction force is generated between the upper push rod 48 and the top frame 6 to block. Because the positive pressure and the friction coefficient are the same, the positive pressure and the friction coefficient are the same as the forward friction force which is applied on the bed body immediately before the closing of the bed body. After the bed body is closed, the friction force becomes the resistance of the top frame 6 to prevent the push rod 48 from sliding forward, and becomes the stable maintaining force of the push frame 8. The force action point is at the bottom of the top frame 6, and the force arm for maintaining the stability of the push frame 8 is the distance between the contact point of the bottom of the top frame 6 and the upper push rod 48 and the axle center of the two push seats 51. The product of this force and the force arm becomes a positively influenced frictional securing torque which is applied to the push frame 8 by the push frame 6 being pushed down.

Regarding the negative influence on the stability of the push frame 8, the downward pressure transmitted by the top frame 6 is twofold, and it is also an unstable pressure, and the action point is at the contact position of the two sides of the upper push rod 48 and the bottom surface of the top frame 6. The unstable pressure acts on the connecting line of two contact points of the lower part of the top frame 6 and the upper push rod 48 to form a downward vertical acting surface. The upward supporting force of the push frame 8 acts on the axle center of the inner sides of the two push seats 51, and the supporting force acts on the connecting line of the two points to form an upward vertical acting surface. The distance between the two vertical surfaces is the force arm for the unstable pressure pressing of the top frame 6. The product of this unstable pressure and the moment arm creates an unstable moment that the top frame 6 exerts on the push frame 8. The pressure is not changed, and the magnitude of the force arm determines the magnitude of the unstable moment.

Whether the friction stabilizing torque applied to the push frame 8 by the top frame 6 pressing down is balanced with the unstable torque applied to the push frame 8 by the top frame 6 is determined according to the condition that the push frame 8 is erected. If the push frame 8 is completely vertical to the ground, the unstable pressure arm will be zero. However, in actual operation, the front board movable member is limited to be pressed upward by the hook 12 against the bedside 5, and the push frame 8 completely perpendicular or nearly perpendicular to the floor is difficult to be actually pressed against the front board movable member by the top frame 6 due to the gap deviation and elastic deformation of the connection structure of the push frame 8. And the push of the front electric pole 24 has errors, and the push rod 48 cannot be pushed to slide to the highest point and is inclined backwards. Because of the existence of the friction force between the push frame 8 and the top frame 6, an optimal angle range exists, even if the push frame 8 inclines forwards for a certain angle, the unstable moment can be ensured to be smaller than the friction stable moment on the premise that the movable part of the front plate can be tightly pushed and cannot be pushed to slide over the highest point and incline backwards. In this case, after the front mast 24 is stopped, the push frame 8 can take up all the pressure exerted by the movable front plate part, and the front mast 24 is completely free from any pressure and is more stable. Of course, the angle range is very small, the push frame 8 is nearly vertical to the ground, and as the abrasion between the parts is increased, the effect of pushing the front plate movable part tightly is also reduced, which is determined by the rigidity and the abrasion resistance of the materials of the push frame 8 and the related linkage parts. In order to ensure the effect of the pushing frame 8 for tightly pushing the movable part of the front plate in a certain abrasion period, the forward inclination angle of the pushing frame 8 can be slightly increased from the optimal range, so that the stabilizing moment is slightly smaller than the unstable moment, at the moment, the upper push rod 48 has the forward moving trend, the front electric pole 24 is required to be assisted by self-locking force to achieve complete balance, but the forward inclination angle of the pushing frame 8 is controlled to be as small as possible, and the front electric pole 24 can meet the requirement only by extremely small self-locking force. In addition, even if the load on the bed surface is suddenly increased greatly, the friction force acting backwards on the upper push rod 48 is also increased greatly due to the increase of the positive pressure while the unstable moment is increased greatly, so that the stable moment is synchronously increased greatly, the stability of the push frame 8 is not influenced greatly, and the requirement of additional auxiliary self-locking force applied to the front electric pole 24 is not high. Therefore, the pushing mode has super strong stability.

The final moment before the bed body is closed, the vertical angle to which the push frame 8 needs to be pushed is generally forward inclined within the range of 30 degrees to 1 degree based on the axis of the push frame 8 being vertical to the ground, and the inclined state of the push frame 8 within the angle range can bear sixty percent of the pressure applied by all the front plate movable components. The selection of the optimum angle range for erection of the push frame 8 is generally optimized in such a manner that the axis of the push frame 8 is inclined forward by an angle in the range of 15 ° to 3 ° from the vertical to the ground, in consideration of the requirement for reducing the self-locking force of the front pole 24 as much as possible and the presence of wear factors.

As shown in conjunction with figures 18, 19 and 20,

after the bed body is closed, the relative transmission parts are deformed due to gaps or elasticity, so that the pushing action of the front electric pole 24 after the machine is stopped can be retracted, and the pushing frame 8 is unstable. For this purpose, the front rib 2 is provided, as shown in the drawing, which is formed by a rib body 54, a rib spring 53 and a rib spring lug 52. The front of the lower part of the rib body 54 is provided with a groove, the front of the groove is welded or connected with the upper part of a rib plate spring 53 by a bolt, the lower part of the rib plate spring 53 is connected with a rib spring lug 52, and the rib spring lug 52 is hinged with the lower end of the front electric pole 24 by a pin shaft. In the closing process of the bed body, the front electric pole 24 can push the rib plate spring 53 to be tightly deformed while pushing the push frame 8. After the bed body is closed, the rib plate spring 53 can provide deformation thrust to prevent the front electric pole 24 from backing up after stopping to push the pushing frame 8 all the time.

As shown in fig. 21, 22 and 23,

when the push frame 8 pushes the top frame 6, the upper push rod 48 needs to push the vertical edge below the top frame 6, and the friction force is large. For this purpose, the upper push rod 48 and the push link rod 47 of the push frame 8 are partially formed into a pulley push frame as shown in fig. 21, 22 and 23, and are composed of a rail pulley 55, an upper wheel lever 56 and a curved push rod 57. The lower end of the bent push rod 57 is welded with the original lower shaft rod 46, the lower part of the middle part of the bent push rods 57 at two sides is still welded with two ends of the inclined rod 50, and the middle part of the inclined rod 50 is still welded with the pushing lug 49. Pulley shafts are arranged at two ends of the upper wheel rod 56, rail pulleys 55 are arranged on the pulley shafts, and the rail pulleys are sealed by gaskets and cotter pins. The upper wheel rod 56 is welded on the upper end of the bent push rod 57, and the upper parts of the two bent push rods 57 are bent inwards, so that the left and right rail pulleys 55 are convenient to disassemble and assemble. In the closing process of the bed body, when the upper wheel rod 56 is pushed upwards, the two rail pulleys 55 just can be respectively propped against the two vertical edges below the top frame 6, so that the friction effect between the upper wheel rod 56 and the top frame 6 can be reduced.

As shown in conjunction with figures 24, 25 and 26,

the rail pulley 55 reduces the self-locking force of the pulley pushing frame pushing up after the bed body is closed. For this purpose, the top frame 6 may be made into a rail-changing top frame as shown in fig. 24, 25 and 26, and may be composed of a frame 59 and a rail replacement block 58. The two-rail pulley 55 is pushed up to the lower vertical edge of the frame 59 in most of the stroke of starting the push-up. When the frame 59 is about to be raised, the lower vertical edges of the frame will dent at a section near the rear end, causing the two-rail pulley 55 to lose contact with the original straight rail at that location. The two sides of the frame 59 are welded with the replacing rail blocks 58, and the lower surfaces of the two replacing rail blocks are provided with vertical edges which are staggered and arranged in succession in the same direction and are positioned on the same plane. The middle column of the upper wheel rod 56 without pulley section has the same diameter as the rail pulley 55, and will be supported against the vertical edges of the left and right rail replacing blocks 58 in a seamless manner. After the bed body is closed, the friction self-locking force between the upper wheel rod 56 and the track-changing top frame can be kept not to change greatly, and the movable part of the front plate can be stabilized.

Fifthly, regarding to sit and hold in the palm operating system and back plate 17 operating system:

the seat support is shown in fig. 27, 28, 29 and 30 and comprises a guide plate 60, a bottom rib 61, a lifting lug 62, a column plate 63, a dirt placing plate 64, a gauge rod 65, a seat plate 66, a connecting shaft 67, an upper rib frame 68, a bottom support 69, an elastic plate 70, an upper support 71, a seat shell 72 and a excrement receiving basin.

When the bed body is opened, a square hole is formed between the front three plate 13 and the rear plate 17 due to the forward movement of the front three plate. Since the guide frame 14 is driven by the front three plates 13 to move forward, the baffle plates on both sides can shield both sides of the square hole to prevent the foreign matters from entering by mistake. The middle part of the guide frame 14 is also provided with a reduced square hole, and the sitting support can be lifted from the square hole for the patient to sit when relieving the bowels, so that the patient has the effect of free and comfortable defecation on the toilet. A bed pan is arranged on the sitting-supporting sewage-placing plate 64 to contain excrement. For clarity of expression, the sitting support and the bed body are not drawn together, but are drawn separately. The upper part of the guide plate 60 is connected with a bottom support 69, the bottom support 69 is in a U-shaped structure, and the left side and the right side of the bottom support 69 are respectively hinged with an upper support 71 which is also in a U-shaped structure through two connecting lugs. The rear lower part of the guide plate 60 is welded with a lifting lug 62 which is connected with the lower end of the middle electric pole 28 by a pin shaft, so that the seat support can be lifted. The lower end of the guide plate 60 is inserted from above the guide groove of the elevation rail 27, along which the guide plate 60 is movable up and down. The guide plate 60 rises until the rear part of the upper support 71 is close to the convex edge at the front end of the rear plate 17, and the middle electric pole 28 stops acting and is fixed in a self-locking way; the guide plate 60 descends until the underside of the shoe 69 is stopped by the upper end of the lifting rail 27.

The upper support 71 is used for supporting a patient and has a semi-circular elongated hole in the middle for receiving the excrement of the patient to fall into the lower part for receiving the bedpan. The rear parts of the left and right parts of the upper support 71 are both supported upwards by the elastic plate 70 fixed on the bottom support 69, and both sides of the front end of the upper support are respectively lapped on the folded parts of the two front ends of the bottom support 69, so that the upper support 71 can swing up and down around the connecting lug. The inner circular arc of the upper support 71 is provided with a downward-folded circular arc section for strengthening. The upper support 71 is also sleeved with a seat shell 72 with a structure size suitable for the upper support, so that the upper support is more suitable for a patient to sit and lean against, the downward folded part at the inner side can block dirt and is convenient to wipe, and the front part of the upper support is provided with a downward extending baffle plate which can prevent urine from splashing. In order to make the sitting comfortable, soft articles which are convenient to scrub can be arranged on the sitting shell 72. The back plate 17 can also be made to stand upright with the back resting when the patient sits and defecates. When the rear part of the rear plate 17 reaches a certain height, the convex edge at the front end can press downwards against the inclined plate at the rear end of the upper support 71 to press the elastic plate 70, so that the front part of the upper support 71 and the front part of the seat shell 72 slightly tilt upwards, and the patient can be prevented from sliding forwards. When the rear part of the rear plate 17 is lowered, the rear end inclined plate of the upper support 71 loses the pressing force, and the upper support 71 is pushed by the elastic plate 70 to return to the horizontal state. Here, the front end flange of the rear plate 17 may be formed as a separate structure to be actively coupled with the rear plate 17 and removed when not in use. In addition, in order to increase the structural strength, a column plate 63 is fixed at the middle part of the front of the guide plate 60, a bottom rib 61 is fixed below the dirt placing plate 64, and an upper rib frame 68 which can be supported at the left and right lower parts of the bottom support 69 is fixed at the front upper part of the guide plate 60.

The guide plate 60 has a connecting lug on each of the left and right sides in front thereof to which the connecting shaft 67 is connected. The connecting shaft 67 is connected with the left and right gauge rods 65, and the other ends of the two gauge rods 65 are respectively hinged with the lower parts of the left and right sides of the seat plate 66 through pin shafts. The sitting plate 66 is hung on the buckling nose at the front upper part of the sitting shell 72 through an upper hook at ordinary times, and the sitting plate 66 can be lifted to cover the upper part of the sitting shell 72 for use as a seat. The front end of the gauge rod 65 can be pulled by the lower part of the seat plate 66 to rotate upwards by taking the connecting shaft 67 as an axial direction.

The lifting rail 27 is welded on the connecting crutch plate 16, and the connecting crutch plate 16 is connected with the middle support 15 by a bolt. The upper end of the middle electric pole 28 is connected with a connecting lug welded on the connecting crutch plate 16 through a pin shaft. The left and right sides of the rear lower part of the lifting rail 27 are respectively connected with the front lower ends of two rail stabilizing rods 29 by connecting lugs and bolts, the rear upper ends of the two rail stabilizing rods 29 are inwards folded and then welded with a connecting plate, and the two rail stabilizing rods are connected with the middle front part of the rear pull rod 30 by bolts. The rear end of the rear pull rod 30 is connected with the lower end of the rear rib 21 by a bolt. The rear rib 21 may be made of angle steel, in addition to channel steel. A connecting plate is welded on the middle part of the middle support 15, and a connecting lug is welded at the rear end of the middle support and is connected with the front end of the rear pull rod 30 through a bolt. The rear rib 21 is welded with the middle part of the rear support 19, and both ends of the rear support 19 are respectively welded with the rear legs 20. Two turning steel connecting ends are welded below the middle part of the rear stop 22 and connected with the upper end of the rear rib 21 through bolts. And a connecting lug is welded above the rear part of the rear pull rod 30 and is hinged with the lower end of the rear electric pole 18 through a pin shaft. The upper end of the rear electric pole 18 is hinged with a connecting lug welded below the rear plate 17 through a pin shaft. The rear part of the rear plate 17 can be driven to rise or fall through the extension and contraction of the rear electric pole 18.

Sixthly, an electric control system, as shown in a direct current control circuit diagram of fig. 52;

the main actions of the bed body deformation are driven by the front electric pole 24, the middle electric pole 28 and the rear electric pole 18, which can be controlled by a logic circuit composed of various switches. A circuit master control box can be arranged on the wall surface behind the bed or below the fixed plate 4 and used for containing a power transformer and collecting the circuit connecting ends of all control switches for logic connection, and fixed switches or pull switches are arranged on the outer side of the bed edge 5 on any side for control. A remote switch can be arranged for operation, and a remote signal receiver is arranged in front of the bed. A switch can be arranged on the outer surface of the control box for control, and a power line is reserved outside the control box to be connected with commercial power for use.

For the front pole 24, the middle pole 28 and the rear pole 18, dc powered electric putters may be used. The DC motors used by them have positive and negative external lines, and are positively connected with power supply to make them rotate forward, and reversely connected to power supply to make them rotate backward.

The circuit is provided with six control switches including an open key 90, a close key 91, a support key 92, a support key 93, a rise key 94 and a level-down key 95, which are two-way control switches, each of which is provided with three branch ends of input, normally-on and normally-off, one way of the control switches is kept to be disconnected, and the two ways of the control switches are opposite after being pressed. The opening key 90 can control the bed body to open, the supporting key 92 can control the sitting support to rise, the rising key 94 can control the rear part of the rear plate 17 to rise, the closing key 91 can control the bed body to close, the supporting key 93 can control the sitting support to fall, and the leveling key 95 can control the rear part of the rear plate 17 to level. The normally-on branches are connected with the negative pole of the power supply, and the normally-off branches are connected with the positive pole of the power supply. The other ends of the open key 90, the lift key 92 and the raise key 94 are respectively connected with the positive terminals of the front motor 87, the middle motor 88 and the rear motor 89. The other ends of the close key 91, the support key 93 and the flat key 95 are respectively connected with the negative ends of the front motor 87, the middle motor 88 and the rear motor 89. When the open key 90, the hold-up key 92 and the raise key 94 are pressed respectively, the forward power supply input ends of the front motor 87, the middle motor 88 and the rear motor 89 corresponding to the open key, the hold-up key 92 and the raise key respectively are switched on to realize forward rotation under the condition of not considering the influence of other limit switches in the circuit temporarily. When the close key 91, the hold-down key 93 and the level-down key 95 are pressed respectively, the reverse power supply input ends of the front motor 87, the middle motor 88 and the rear motor 89 corresponding to the close key, the hold-down key 93 and the level-down key respectively are switched on the positive pole of the power supply to realize reverse rotation under the condition of not considering the influence of other limit switches in the circuit. In addition, trigger switches are arranged at different positions, and the trigger switches are as follows:

the first touch key 96 is arranged between the back plate 17 and the bedside 5, is a normally-off trigger switch and is switched on only when the back plate 17 is flat and pressed. The first touch key 96 is respectively connected between the normally open branches of the opening key 90, the closing key 91, the lifting key 92 and the lifting key 93 and the negative pole of the power supply, and can control the on-off of the forward and reverse rotation circuits of the front motor 87 and the middle motor 88. The rear plate 17 is in a flat state to become a prerequisite, and the bed body can be opened, closed, lifted and lowered only by touching the key 96 to be turned on.

The second touch key 97 is arranged below the fixed plate 4 and is a normally-off trigger switch, and the second touch key is pressed by the front plate 7 to be switched on only after the bed body is opened. The second touch key 97 is connected in series in the circuit from the positive pole of the power supply to the normally open branch of the hold-up key 92. When the back plate 17 is in a flat state, the first touch key 96 is on, and after the bed body is completely opened, the front plate 7 presses the second on-touch key 97, and then the normally-off branch of the on-hold key 92 is pressed, so that the middle motor 88 is switched on to rotate forwards, and the sitting support can be lifted.

The touch key III 98 is arranged in the middle of the front of the continuous turning plate 16 and is a normally-off trigger switch, and the touch key III is turned on only when the bottom support 69 descends to the right position and is pressed. Touch key three 98 is connected in series in the circuit from the positive power supply to the normally open branch of the close key 91. When the rear plate 17 is in a flat state, the first contact key 96 is on, and the bottom support 69 is in place after falling, the third contact key 98 is pressed, and the normally-off branch of the on-off key 91 is pressed, so that the front motor 87 has the possibility of switching on and reversing to close the bed body.

The touch key IV 99 is arranged at the inner side of the bedside 5 at any side and is a normally-off trigger switch, and the touch key IV is switched on only by pressing the bed body by the guide frame 14 after the bed body is closed; the touch key five 100 is arranged at the rear lower part of the continuous turning plate 16 and is a normally-off trigger switch, and the touch key five is turned on only when the seat support is lifted to the right position and the lifting lug 62 presses the seat support. The touch key IV 99 and the touch key V100 are connected in parallel and then connected in series into a circuit from the positive electrode of the power supply to the normally-off branch of the lifting key 94, when the touch keys are completely off, the forward rotation circuit of the rear motor 89 is off, and when any touch key is on, the forward rotation circuit of the rear motor 89 is on. After the bed body is closed, the guide frame 14 presses the touch key four 99 to be switched on, and if the switch-on lifting key 94 normally cuts off the branch, the rear motor 89 can be switched on to rotate forwards, and the rear part of the rear plate 17 is lifted. Or after the bed body is opened and the seat support is lifted to the right position, the lifting lug 62 presses the five touch buttons 100 to be switched on, if the normally-off branch of the lifting key 94 is pressed to be switched on, the rear motor 89 can be switched on to rotate forwards, and the rear part of the rear plate 17 is lifted. If the bed body is opened or closed, the touch key IV 99 and the touch key V100 are not pressed and can be kept disconnected, so that two branches of a parallel circuit formed by the touch keys are not communicated, the rear motor 89 can not be switched on, and the rear part of the rear plate 17 can not be lifted.

The first security key 101 and the second security key 102 are respectively arranged on the left side and the right side of the rear end face of the front three plates 13, are normally-on trigger switches, and can be disconnected only by being touched in the closing process of the bed body. In order to be able to touch any point behind the front three plates 13 between the two sides 5, a cross bar can be placed behind the two switches. The two ends of the cross rod are connected with spring pieces which are vertically fixed with the cross rod, the spring pieces can be bent, and the lower ends of the spring pieces are fixed below the rear ends of the front three plates 13. The cross bar can keep a proper distance from the first safety key 101 and the second safety key 102, at least one switch is disconnected when the cross bar is pressed, and the switch is switched on again when the cross bar is not pressed. The first and

second security keys

101 and 102 are connected in series in the circuit from the positive pole of the power supply to the normally open branch of the closing key 91, and when they are all on, the reverse circuit of the front motor 87 is not turned on, and when either is off, the reverse circuit of the front motor 87 is turned off. Therefore, foreign matters can be prevented from being clamped and squeezed behind the front three plates 13 in the closing process of the bed body.

In addition, the normally-on branch of the lifting key 92 is connected with the negative power supply through the touch key one 96, and the normally-off branch of the lifting key 93 is connected with the positive power supply. If the back plate 17 is in a flat state, the touch key is turned on at 96, and the middle motor 88 can be turned on and reversely rotated to realize the landing by pressing the landing key 93 to switch on the normally-off branch. The raise key 94 is normally on and connected to the negative power supply and the lower key 95 is normally off and connected to the positive power supply. The rear motor 89 can be switched on and reversely rotated to realize the leveling of the rear plate 17 by pressing the leveling key 95 to switch on the normally-off branch.

Preferably: the opening key 90 and the supporting key 92 can be controlled by a relay switch at the same time, three branches respectively connected with the two keys are controlled by one key, and if the normally-off branches are switched on at the same time, the bed body can be opened, continued sitting and supporting can be lifted. The support key 93 and the closing key 91 can be controlled by a relay switch at the same time, three branches connected with the two keys are controlled by one key, and if normally-broken branches are connected at the same time, the automatic continuous bed body closing for the sitting, supporting and descending can be realized.

Seventhly, other auxiliary alternative facilities and supplementary descriptions:

1. other ancillary alternative facilities:

as shown in FIGS. 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 and 42,

in order to reduce the weight, the front plate 7 can also be manufactured by taking a side rod 73 as a base, a left side rod 73 and a right side rod 73 are welded with front and back side angle steels or metal rods with other shapes to form a frame body, and a reinforcing rod is welded in the middle; the front two-plate 9 is manufactured by taking two side rods 75 as a base, the left and right side two side rods 75 and front and rear side angle steels or metal rods with other shapes are welded into a frame body, and two reinforcing rods are welded in the middle; the front three-plate 13 is manufactured by taking a three-sided rod 77 as a base, welding a left three-sided rod 77 and a right three-sided rod 77 with front and rear angle steels or metal rods with other shapes to form a frame body, and welding a reinforcing rod in the middle; the rear plate 17 is manufactured on the basis of the rear side bars 78, the left and right rear side bars 78 are welded to front and rear side angle steels or other shaped metal bars to form a frame, and a reinforcing bar is welded to the middle portion. See fig. 31, 32 and 33 for a modified plate, fig. 34, 35 and 36 for a modified plate, fig. 37, 38 and 39 for a modified plate, and fig. 40, 41 and 42 for a modified plate. A plurality of connecting blocks are welded in the frames, and can be respectively connected and fixed with wood plates or wood laths by screws, so that the original metal plate surfaces of the front first plate 7, the front second plate 9, the front three plate 13 and the rear plate 17 in the figure 1 can be respectively replaced. The fixing plate 4 can also be manufactured in this way. The front part of the first side rod 73 is hinged with the rotating shaft seat of the bedside 5, and the rear part of the first side rod 73 is hinged with the front part of the second side rod 75; the front part of the two-side rod 75 is hinged with the rear part of one side rod 73, the rear part of the two-side rod 75 is hinged with the front part of the three-side rod 77, and the rear part of the two-side rod 75 is also hinged with the rear part of the transformation assisting plate 10; the front part of the three-side rod 77 is hinged with the rear part of the two-side rod 75, the front part of the three-side rod 77 is also hinged with the rear part of the transformation assisting plate 10, and the rear part of the three-side rod 77 is hinged with the front part of the guide frame 14; the front part of the rear side rod 78 is hinged with the rotating shaft seat of the bedside 5, the middle part of a frame body formed by welding the rear side rod 78 and a metal rod is hinged with the upper end of the rear electric pole 18, and the lower end of the rear electric pole 18 is hinged with the rear pull rod 30 connected to the bedstead. Because of the existence of the connection clearance, each rotating shaft is easy to be inclined, which can cause the unstable deformation action of the bed body and increase the rotation resistance. Two first sleeves 74, four second sleeves 76 and two rear sleeves 79 are respectively and correspondingly welded at the connecting holes of the side rod 73, the side rod 75 and the rear rod 78. The rotating shaft is inserted into a sleeve 74, a sleeve 76 and a rear sleeve 79, and is hinged with the relevant connecting part, so that the rotating shaft can be prevented from being inclined. The side walls of the sleeves are provided with screw holes, and the corresponding positions on the rotating shafts are provided with annular grooves which can be screwed in and abutted by screws, so that the rotating shafts can be prevented from moving. Two reinforcing rods are welded in the middle of the frame body of the modified front two plates 9, so that the two reinforcing rods can play a role in reinforcing, and are respectively positioned above the corresponding positions of the two folding rods 37 after being installed on the bed body, so that the folding rods 37 can move along the bottom surface of the folding rods when being pushed up. In addition, the connecting blocks on the first plate, the second plate, the third plate, the rear plate and the modified fixing plate 4 can be downwards welded, and the wood laths connected with the connecting blocks can be grooved at the contact position with the upper surface of the frame body, so that the wood laths can sink towards the inside of the frame body, and the whole thickness of the bed plate can be reduced on the premise that the wood laths are as thick as possible.

For easy disassembly and assembly, the two side transformation assisting plates 10 can be made into the counter bore assisting plate 80. The inner sides of the rotating shaft holes at the front parts of the counter bore auxiliary plates 80 at the two sides are respectively provided with a counter bore with a slightly larger diameter, and an independent rotating shaft with an annular step at the rear part can be respectively hinged with the rotating shaft seats welded on the bed edges 5 at the two sides, so that the front parts of the counter bore auxiliary plates 80 can be prevented from slipping inwards from the rotating shaft. The pin hole is arranged on the rotating shaft close to the outer side of the rotating shaft seat, and the split pin is inserted into the pin hole, so that the rotating shaft can be prevented from moving left and right relative to the rotating shaft seat. The outer sides of the rotating shaft holes at the rear parts of the two counter bore auxiliary plates 80 are also provided with counter bores with slightly larger diameters, and the three-side rods 77 and the two-side rods 75 at the corresponding sides can be respectively connected by a single rotating shaft with an annular step at the rear part, so that the rear parts of the counter bore auxiliary plates 80 can be prevented from slipping outwards from the rotating shaft.

As shown in figures 12, 13 and 14,

in order to cover the receiving bowl at ordinary times, a sewage sealing device as shown in fig. 12, 13 and 14 can be arranged. It is composed of a connecting pipe 42, a crank shaft 43, a cover plate 44 and a retainer 45. A connecting pipe 42 can be welded on the rear surface of the middle support 15 and positioned outside the two sides of the connecting crutch plate 16, and the upper end of the crutch shaft 43 is inserted into the connecting pipe 42. Through holes are arranged on the connecting pipe 42 and the crank shaft 43 and are fixed by split pins. With this connection, the dismouting transportation of can being convenient for. The horizontal axis at the lower part of the crank shaft 43 is positioned at the proper height at both sides of the dirt placing plate 64 and can be inserted into the shaft holes of the left and right cover plates 44 to be hinged. When the seat support is at the lower part, the left and right cover plates 44 can be horizontally overlapped on the bed pan. When the seat support moves upwards and the sewage containing plate 64 drives the excrement receiving basin to move upwards, because the two crank shafts 43 cannot move, the two sides of the upper part of the excrement receiving basin can prop against the lower part of the left cover plate 44 and the right cover plate 44, so that the inner ends of the left cover plate 44 and the right cover plate 44 rotate upwards. Until the seat support is lifted to the right, the left cover plate 44 and the right cover plate are both erected, so that the excrement receiving basin is completely exposed for receiving excrement. A torsion spring is arranged between the crank shaft 43 and the cover plate 44, when the bed pan falls along with the integral sitting support, the left and right cover plates 44 can rotate inwards by being twisted by the torsion spring until the bed pan is covered. At the middle part of the horizontal shaft at the lower part of the two crank shafts 43, a baffle 45 facing inwards is also arranged, and the two baffle 45 are both composed of a baffle plate and a lantern ring. The baffle plates at two sides can limit the cover plate 44 to rotate downwards when the excrement receiving basin is taken out, and the outer ends of the baffle plates are welded with lantern rings which are sleeved on the transverse shaft at the lower part of the crank shaft 43 and are fastened by screws.

As shown in figures 49, 50 and 51,

the lifting, leveling, retracting and landing of the seat plate 66 can also be controlled electrically, and the retractable device consists of a retractable rod 84, a retractable electric pole 85 and a support connecting rod 86. The gauge rod 65 and the connecting shaft 67 can be connected and fixed through a pin or a connecting key. The front end of the retractable rod 84 can be welded on the connecting shaft 67 on any side, and the rear end of the retractable rod 84 is provided with a connecting lug which is hinged with the upper end of the retractable electric pole 85 through a rotating shaft. The lower end of the retractable pole 85 is hinged with a connecting lug on the supporting connecting rod 86 through a rotating shaft, and the other end of the supporting connecting rod 86 is provided with a turning part which can be welded at the rear part of the guide plate 60. Since the connecting shaft 67 is left-right communicated, either side can be controlled. If the retractable device is installed on the other side, the supporting connecting rod 86 is turned to the horizontal direction opposite to the retractable electric pole 85 from the downward direction by taking the connecting lug as an axis. When the retractable pole 85 pulls the retractable rod 84 downward, the connecting shaft 67 will drive the front parts of the two side gauge rods 65 upward, so that the seat plate 66 is lifted. A torsion spring is arranged on a pin shaft connecting the seat plate 66 and the gauge rod 65, so that the seat plate 66 can be inclined backwards in the lifting process until the seat plate is attached to the upper end surface of the seat shell 72 and stops after the seat plate is in place. When the retractable pole 85 pushes the retractable pole 84 upwards, the connecting shaft 67 drives the front parts of the two gauge rods 65 downwards to be pushed by the front part of the seat shell 72, so that the seat plate 66 is erected and pulled by the gauge rods 65 to move downwards until the seat plate 66 is hooked on the buckling nose at the front upper part of the seat shell 72.

As shown in connection with figures 46, 47 and 48,

a blocking device:

as the front part of the bed board is provided with the cotton-padded mattress and the bed sheet, the cotton-padded mattress and the bed sheet are difficult to avoid extending out of the bedside 5. During the closing process of the bed body, the relative movement between the movable part of the front plate and the bed edge 5 can cause shearing to the outwards extending part of the edge of the mattress sheet. For this purpose, a catch is provided, as shown in fig. 46, 47 and 48, which is formed by a bolt 81, a socket 82 and a compression spring 83.

For the former plate 7, first, a through hole from top to bottom should be provided at both sides thereof near the edges, and the upper end of the stud 81 is inserted from below this through hole. The upper end flat plate of each tube seat 82 is respectively clung to the bottom surface of the lower side of the through holes, and each tube seat 82 is vertical to the bottom surface and welded. The lower body rod body of the stud 81 is inserted into the tube seats 82, each tube seat 82 has a strip-shaped guide groove towards the adjacent bedside 5, and the lower part of the stud 81 extends out of the strip-shaped guide groove to form a convex cross column, so that the stud 81 can only move up and down and can not rotate. The outward convex transverse column of the stud 81 can be resisted by the underside of the bed edge 5 in the closing process of the bed body. A compression spring 83 is arranged below the interior of the pipe seat 82, and when the outward convex transverse column of the stud 81 is abutted, the stud 81 moves downwards in the pipe seat 82 to compress the compression spring 83; after the bed body is closed, the exposed part of the upper end of the stud 81 can completely enter the corresponding through hole, so that the flatness of the front part of the bed plate is not influenced.

In the process of opening the bed body, the tube seat 82 moves downwards along with the connected relevant part, the pressing on the outward convex transverse column of the stud 81 is gradually lost, the upper end of the stud 81 can extend upwards from the corresponding through hole under the pushing of the pressure spring 83, and the edge of the mattress can be pushed and blocked to extend out to the bed edge 5. When the bed body is closed to a certain degree, the outward convex transverse columns of the studs 81 are pressed again, so that the studs 81 gradually descend, and when the upper parts of the studs 81 cannot effectively block the edge of the sheet, the relative displacement of the relevant parts of the bed body enters a region where the sheet is not easy to cut any more until the sheet is flattened after the bed body is closed.

The same method can be applied to the front three plates 13 to provide a barrier. In the same way for the front two panels 9, the outer side auxiliary variable panels 10 also extend the outer transverse columns of the studs 81 further outward to be held against the underside of the bed 5. In addition, the main body of the stud 81 may also be a circular tube structure.

2. Other supplementary notes:

for the sheet and the pillow on the back plate 17, since the back plate 17 may be raised sometimes, in order to prevent slipping, a bed clip can be fixed at the back of the back plate 17 to clip the sheet and the pillow. For the sheet on the front plate, the sheet is easy to wrinkle after the bed body is opened and then closed. For this purpose, the sheet rear portion is passed around the front plate rear end downward and clamped by a bed clip fixed thereto. The front end of the sheet is tensioned by an elastic belt at the front part of the bed surface. Therefore, when the bed board is flat, the mattress sheet can be flat.

Preferably: the front rail 1 and the rear rail 22 can also be made of angle steel, and the front rib 2 and the rear rib 21 can be connected conveniently.

Preferably: in order to make the deformation of the bed body more flexible, a shaft sleeve or a bearing can be arranged in the related rotating shaft hole.

Preferably: two sides of the back plate 17 are respectively connected with a rope belt, the middle of the back plate is fastened by a buckle similar to a safety belt of an automobile, and a patient with unstable sitting posture can be pulled after the back part of the back plate 17 is lifted.

Preferably: the middle part of the bed edge 5 is welded with the position near the rotating shaft seat, because the front plate can not cover the bed edge 5 at the position, the front plate can also be fixed on the bed edge by a wood plate through screws, so that the front plate is level with the bed surface, and a groove can be reserved on the wood plate at the corresponding rotating shaft seat.

Preferably: protective baffles are arranged on the front baffle 1 and the rear baffle 22, and guardrails which can be conveniently erected and laid down are arranged on the upper parts of the side surfaces of the left and right bed sides 5.

Preferably: the front legs 3 and the rear legs 20 can be kept short, and rollers are arranged at the lower parts of the front legs and the rear legs, so that the bed body can move conveniently.

Preferably: a water heater or a water tank is also arranged on the back wall close to the bed body and leads a water pipe to the sitting support so that the patient can clean after defecating.

Preferably: the four sides of the square hole inside the guide frame 14 are preferably provided with downward folded edges or provided with folding ribs and bones under the flat plate, so that the strength requirement can be reduced. In addition, the main body of the guide frame 14 can be made into a frame structure, and wood plates are fixed on the two sides of the main body, so that the weight can be reduced. When the patient takes the seat support as a chair, the left and right armrests can be arranged more comfortably. The flat plates at both sides of the guide frame 14 are provided with long grooves in the front-back direction, three holes arranged in the front-back direction are reserved in each groove, and sleeves are fixed below the front-back holes at each side. The four pipe columns are respectively inserted into the four sleeves, and the four pipe columns are tightly matched, can slide up and down and are not easy to shake. The upper end of the pipe column is connected with a transverse handrail, and the handrail can be hidden into the groove along with the downward movement of the pipe column and can be clamped and fixed upwards. The middle part of the handrail can be hinged with a connecting rod, the connecting rod can be hidden in the middle hole of the groove when the handrail faces downwards, and the lower end of the connecting rod can be lifted outwards after the handrail is lifted and is connected to the adjacent guardrails, so that the handrail is more stable. If the handrail is of a tubular structure, a sleeve with a slightly smaller size can be inserted into the front end of the handrail. When the sleeve is pulled out, a table plate can be placed on the sleeve.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A nursing bed comprises a bed frame and a bed surface positioned on the bed frame; the bed surface comprises a front plate and a rear plate (17); the front plate comprises a fixed plate (4) fixed on the bedstead, and a front plate (7), a front two plates (9) and a front three plate (13) are sequentially hinged behind the fixed plate (4); a top frame (6) which is used for being propped under the front plate is arranged below the front plate, and the front end of the top frame (6) is hinged on the bed frame;

the method is characterized in that:

a push frame (8) and a front electric pole (24) are arranged below the top frame (6); the lower end of the push frame (8) is hinged on the bed frame, and the upper end of the push frame (8) is propped against the lower surface of the top frame (6); the lower end of the front electric pole (24) is hinged on the bedstead, and the upper end of the front electric pole (24) is hinged in the middle of the push frame (8);

the push frame (8) comprises a lower shaft lever (46), a push connecting rod (47), an upper push rod (48), a push connecting lug (49) and an inclined rod (50); the upper push rod (48) is welded with the push connecting rod (47), and the push connecting rod (47) is welded on the lower shaft lever (46); two ends of the inclined rod (50) are welded on the push connecting rod (47), and the middle part of the inclined rod (50) is welded with the push connecting lug (49); the upper push rod (48) is propped against the lower surface of the top frame (6); the push connecting lug (49) is hinged with the upper end of the front electric pole (24) through a pin shaft.

2. The care bed of claim 1, wherein: when the upper end of the push frame (8) tightly pushes the top frame (6), the axis of the push frame (8) inclines forwards 1-30 degrees on the basis of being vertical to the ground.

3. The care bed of claim 2, wherein: when the upper end of the push frame (8) tightly pushes the top frame (6), the axis of the push frame (8) inclines forwards by 3 degrees to 15 degrees on the basis of being vertical to the ground.

4. The care bed of claim 1, wherein: two ends of the lower shaft lever (46) are hinged with push seats (51), and the left and right push seats (51) are respectively welded with two diagonal draw bars (26) and a flat draw bar (25); the upper end of the diagonal draw bar (26) is connected with the lower surface of the bed edge (5) of the bed frame, and the front end of the horizontal draw bar (25) is connected with the bed frame.

5. The care bed of claim 1, wherein: the rear end of the top frame (6) is hinged with a lengthening device (11), and the top frame (6) and the lengthening device (11) are propped under the front plate together.

6. The care bed of claim 5, wherein: the lengthener (11) comprises a folding rod (37), a folding shaft (38) and a folding connecting lug (39); the folding lugs (39) are welded on two sides of the rear end face of the top frame (6), and connecting holes are formed in the upper parts of the folding lugs (39); a connecting hole is also formed above the front part of the folding rod (37), and the folding rod (37) and the connecting hole of the folding connecting lug (39) are hinged through the folding shaft (38); when the folding rod (37) is driven by the top frame (6) to be upwards jacked below the front two plates (9), the front lower end of the folding rod (37) is propped against the lower side of the rear part of the top frame (6), and the folding rod (37) is jacked to the joint part of the front two plates (9) and the front three plates (13).

7. The care bed of claim 1, wherein:

the front plate (7) comprises a pair of side bars (73);

the front two plates (9) comprise a pair of two-side rods (75);

the front three plates (13) comprise a pair of three-sided bars (77);

the rear plate (17) includes a pair of rear side bars (78);

the two side rods (75) and the metal rods are welded into a frame body, and the frame body is connected with the wood board; the front part of the two-side rod (75) is hinged with the rear part of the one-side rod (73), the rear part of the two-side rod (75) is hinged with the front part of the three-side rod (77), and the rear part of the two-side rod (75) is hinged with the rear part of the transformation assisting plate (10).

8. The care bed of claim 7, wherein: the rear side rod (78) and the metal rod are welded into a frame body, and the frame body is connected with the wood board; the front part of the rear side rod (78) is hinged with a rotating shaft seat of a bedside (5) of the bed frame, the middle part of a frame body formed by welding the rear side rod (78) and a metal rod is hinged with the upper end of a rear electric pole (18), and the lower end of the rear electric pole (18) is hinged with a rear pull rod (30) connected to the bed frame.

9. The care bed of claim 1, wherein: the two sides of the front plate (7) are provided with blocking devices; the stopper comprises a bolt (81), a pipe seat (82) and a pressure spring (83); through holes from top to bottom are formed in the edges of two sides of the front plate (7), and the tube seats (82) are fixed on the edge of the lower side of the front plate (7) and are opposite to the through holes of the front plate (7); the upper part of the bolt (81) is inserted into a through hole of the front plate (7), and the lower part of the bolt (81) is positioned in the tube seat (82); the bottom of the pipe seat (82) is provided with the pressure spring (83), and the pressure spring (83) jacks up the stud (81); an outward convex transverse column is arranged on the outward side of the stud (81), and a long strip-shaped guide groove opposite to the outward convex transverse column is arranged on one side of the tube seat (82); the outer end of the outer convex transverse column penetrates through the elongated guide groove, and is vertically opposite to the bed edge (5) of the bed frame.

10. The care bed of claim 9, wherein: the blocking devices are arranged on two sides of the front two plates (9) and the front three plates (13).