CN108524147A - A kind of water-closet bowl driving device and its toilet seat bed - Google Patents

Abstract

The invention discloses a toilet pan driving device, which comprises a toilet pan and a control mechanism. The toilet bed is provided with a toilet mouth, and the control mechanism includes a toilet pan bracket. The bottom of the toilet bed is located on one side of the toilet opening, and the other side of the toilet opening is provided with a yaw bracket, the upper end of the yaw bracket is hinged at the bottom of the toilet bed, and the yaw bracket is provided with a blocking plate , A driving link is hinged between the yaw bracket and the yaw link mechanism, and a yaw power device is installed at the bottom of the toilet bed, the drive device can drive the toilet pan and the toilet mouth to cooperate accurately, the toilet pan and the blocking plate Linkage, the action is simpler. In addition, the present invention also discloses a toilet bed using the driving device. The toilet bed uses the above-mentioned toilet pan driving device, which can drive the toilet pan and the toilet mouth to cooperate accurately, and switch the blocking plate while the toilet pan moves. The action is simpler.

Description

Toilet pan driving device and toilet bed

technical field

The invention relates to a toilet bowl driving device, which is used to drive the toilet bowl to move, and also relates to a toilet bed using the driving device.

Background technique

The sitting bed includes a bed frame on which a bed board is placed, and a toilet seat is arranged on the bed board. The way of horizontal driving is realized. The toilet bowl slides to the position corresponding to the toilet mouth through the horizontal sliding mechanism, and then the patient is convenient on the bed, and the excrement is discharged from the toilet mouth into the toilet bowl. When not in use, The toilet bowl is removed, and then the toilet opening is plugged with a blanking plate. However, the structure of this driving device is unreasonable. First of all, the toilet bowl cannot be closely matched with the toilet mouth, and the toilet bowl needs to be moved horizontally. Excreta may not fall into the toilet bowl accurately like this. Secondly, the blocking plate needs an additional mechanism to be driven to block the toilet opening, so that the structure and action are relatively complicated.

Contents of the invention

The technical problem to be solved by the present invention is to provide a driving device for the toilet bowl, which has a reasonable structure, can drive the toilet bowl and the toilet mouth to cooperate accurately, and the toilet bowl and the blocking plate are linked, and the action is simpler.

Another technical problem to be solved by the present invention is to provide a toilet bed, which uses the above-mentioned toilet pan driving device, which can drive the toilet pan and the toilet mouth to cooperate accurately, and the toilet seat can be blocked while moving. Board switching, the action is simpler.

In order to solve the above technical problems, the technical solution of the present invention is: a toilet pan driving device, including a toilet pan and a control mechanism for driving the toilet pan, the toilet seat is provided with a toilet mouth, and the control mechanism is installed on the toilet seat. The bottom of the toilet bed controls the toilet bowl to move to the bottom of the toilet mouth or to move away. The control mechanism includes a toilet pan bracket, the toilet pan is placed on the toilet pan bracket, and the toilet pan bracket is hinged on the toilet seat through a yaw link mechanism The bottom of the bed is located on one side of the toilet seat. The other side of the toilet seat is provided with a yaw bracket. The upper end of the yaw bracket is hinged For the blocking plate that blocks the toilet opening, a driving link is hinged between the yaw bracket and the yaw link mechanism, and a yaw power device is installed on the bottom of the toilet bed, and the yaw power device Driving the yaw bracket to yaw makes the blocking plate or the toilet bowl swing to the toilet opening to cooperate with it.

As a preferred solution, the bedpan bracket includes a lower bracket and a bedpan placement frame, the yaw link mechanism is hinged to the lower bracket and the bottom of the toilet bed, and the bedpan placement frame is fixed above the lower bracket.

As a preferred solution, the bedpan placement frame includes a frame body arranged in a well-shaped shape, and several upwardly bent support plate parts are arranged on the frame body, and each support plate part constitutes a support plate adapted to the toilet pan. Protect space.

As a preferred solution, the yaw link mechanism includes four first connecting rods parallel to each other, the upper ends of the four first connecting rods are hinged at the bottom of the toilet bed, and the lower ends of the four first connecting rods Hinged on the bedpan support, the number of the drive link is two and arranged in parallel, one end of the drive link is hinged on the yaw bracket, and the other end of the drive link is hinged on the two second adjacent to the yaw bracket. The middle of a connecting rod.

As a preferred solution, the yaw bracket is oscillatingly installed on the bottom of the toilet bed through the bracket shaft, one end of the driving link is hinged to the middle of the swing bracket through the first hinge shaft, and the other end is hinged to the middle part of the swing bracket through the second hinge shaft. It is hinged at the middle of the first connecting rod; when the blocking plate is matched with the toilet opening, the first hinge shaft is located above the line connecting the center of the second hinge shaft and the bracket rotating shaft.

As a preferred solution, the yaw power device includes a yaw motor, and the yaw motor is hinged on the bottom of the toilet bed through a motor hinge shaft, and a articulated arm is welded on the bracket shaft, and the output of the yaw motor A lead screw nut mechanism is connected between the shaft and the hinged arm, the lead screw of the lead screw nut mechanism is connected with the output shaft of the yaw motor, and the screw sleeve of the lead screw nut mechanism is hinged on the hinge arm.

As a preferred solution, the hinged position between the yaw link mechanism and the bottom of the toilet bed is located on one side of the width direction of the toilet opening, and the bracket rotating shaft is located on the other side of the width direction of the toilet opening.

After adopting the above technical solution, the effect of the present invention is that the control mechanism includes a bedpan support, the toilet seat is placed on the bedpan support, and the bedpan support is hinged on the bottom of the toilet bed through a yaw link mechanism and is located at the bottom of the toilet seat. One side of the toilet mouth, the other side of the toilet mouth is provided with a yaw bracket, the upper end of the yaw bracket is hinged on the bottom of the toilet bed, and the yaw bracket is provided with a A blocking plate, a driving link is hinged between the yaw bracket and the yaw link mechanism, and a yaw power device is installed on the bottom of the toilet bed, and the yaw power device drives the yaw bracket The deflection makes the blocking plate or the toilet bowl swing to the toilet opening to cooperate with it, so that the structure of the toilet pan driving device is reasonable, and the deflection support is driven by the deflection power device, and the deflection linkage mechanism is driven by the drive link to move , the yaw link mechanism can drive the bedpan bracket to yaw so that the toilet bowl can be placed at the toilet mouth, which is convenient for patients to use. While the toilet bowl is based on the toilet mouth, the deflection bracket swings toward the toilet mouth, and then the blocking plate deflects to the toilet mouth and cooperates with the toilet mouth, which is convenient for patients to use normally.

And because the bedpan placement frame includes a frame body arranged in a well-shaped shape, the frame body is provided with several upwardly bent support plate parts, and each support plate part constitutes a support space adapted to the toilet pan. The placement frame structure is reasonable, the toilet bowl is placed securely, and is easy to take out.

And because the yaw link mechanism includes four first connecting rods parallel to each other, the upper ends of the four first connecting rods are hinged on the bottom of the toilet bed, and the lower ends of the four first connecting rods are hinged on the bedpan bracket , the number of the drive links is two and arranged in parallel, one end of the drive link is hinged on the yaw bracket, and the other end of the drive link is hinged on the middle of the two first links adjacent to the yaw bracket , using the parallel first connecting rod to swing smoothly, the toilet pan is always in a horizontal state when swinging, and excrement can be avoided from splashing out.

And because the swing bracket is swingably installed on the bottom of the toilet bed through the bracket shaft, one end of the driving link is hinged to the middle of the swing bracket through the first hinge shaft, and the other end is hinged to the first connecting rod through the second hinge shaft. The middle part of the rod; when the blocking plate is matched with the toilet seat, the first hinge axis is above the line connecting the second hinge axis and the center of the bracket rotation axis, because the first hinge axis is located on the center line of the second hinge axis and the bracket rotation axis In this way, when switching from the blocking plate to the toilet bowl, when the swing bracket swings, it will first drive the toilet bowl to swing away from the toilet mouth, and then drive the toilet bowl to swing towards the toilet mouth, which can make room for the deflection bracket swing.

And because the hinged position of the yaw link mechanism and the bottom of the toilet bed is located on one side of the width direction of the toilet opening, and the support rotating shaft is located on the other side of the width direction of the toilet opening, it is convenient to open the door from one side of the width direction. Take out the toilet bowl.

In order to solve the second technical problem above, the technical solution of the present invention is: a toilet bed of a toilet pan driving device, the toilet bed includes a bed frame, a bed board is placed on the bed frame, and a bed board is set on the bed board There is the toilet opening, the toilet pan driving device is arranged at the bottom of the bed frame, the bed board includes a first bed board, a second bed board, a third bed board and a fourth bed board, and the first bed board and the second bed board between the second bed board and the third bed board, and between the third bed board and the fourth bed board are respectively hinged by hinge shafts extending along the width direction, the toilet opening is arranged on the third bed board, and the bottom of the bed frame A sinking yaw drive device for driving the second bed board to deflect and sink, and a lifting yaw drive device for driving the fourth bed board to lift relative to the third bed board.

Preferably, the sinking yaw driving device includes a sinking yaw motor hinged at the bottom of the bed frame, the bottom of the second bed board and the bottom of the first bed board are respectively fixed with a second support frame and a first support frame, The first support frame is fixed on the bottom of the first bed board, one end of the first support frame is hinged to the second support frame, the other end of the second support frame is hinged on the bed frame, and the sinking The output shaft of the yaw motor is hinged to the middle part of the second support frame through a screw nut mechanism.

Preferably, the third bed board and the fourth bed board respectively include two third bed board halves and a fourth bed board half, and the third bed board halves and the fourth bed board halves are all passed along the length direction. The extended hinge shafts are hinged to each other, and a side turning drive device for driving the deflection between the two fourth bed board halves is arranged between the two fourth bed board halves.

After adopting the above-mentioned technical scheme, the effect of the present invention is: the toilet bed uses the above-mentioned toilet pan drive device, which can drive the toilet pan and the toilet mouth to cooperate accurately, and the closing plate is switched at the same time as the toilet pan moves, and the movement simpler.

Since the sinking yaw driving device includes a sinking yaw motor hinged at the bottom of the bed frame, and the bottom of the second bed board and the bottom of the first bed board are respectively fixed with a second support frame and a first support frame, the The first support frame is fixed on the bottom of the first bed board, one end of the first support frame is hinged to the second support frame, the other end of the second support frame is hinged on the bed frame, and the sinking bias The output shaft of the pendulum motor is hinged with the middle part of the second support frame through the lead screw nut mechanism, so that the sinking yaw motor can drive the second support frame to move through the lead screw nut mechanism, so that the second bed board can be moved relative to the third bed board. Sinking deflects, and meanwhile also makes the first bed board sink through the first supporting frame, so that the patient can sit up comfortably and conveniently.

And because the third bed board and the fourth bed board respectively include two third bed board half bodies and the fourth bed board half body, between the third bed board half body and the fourth bed board half body, the The hinge shafts of the toilet bed are hinged to each other, and a side turning drive device for driving the deflection between the two fourth bed board halves is arranged between the two fourth bed board halves. It is more convenient to use.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structure diagram when using toilet pan state of embodiment 1 of the present invention;

Fig. 2 is another three-dimensional structure diagram when using the toilet pan in Embodiment 1 of the present invention;

Fig. 3 is the three-dimensional structural diagram when using the blocking plate state in Embodiment 1 of the present invention;

Fig. 4 is a perspective view in Embodiment 2 of the present invention;

Fig. 5 is a structural schematic view of the sinking of the first bed board and the second bed board in Example 2 of the present invention;

Fig. 6 is a schematic side view of Fig. 5;

Fig. 7 is a schematic diagram of the bottom of Fig. 5;

In the attached drawings: 1. Toilet bowl; 2. First connecting rod; 3. Driving connecting rod; 4. Sway bracket; 5. Blocking plate; 6. Lower bracket; Department; 9. screw nut mechanism; 10. yaw motor; 11. articulated arm; 12. bracket shaft; 13. first hinge shaft; 14. second hinge shaft; 15. bed frame; 16. bed board; 161. 162. The second bed board; 163. The third bed board; 1631. The third bed board half; 164. The fourth bed board; 1641. The fourth bed board half; 17. The toilet seat; 18. The first support frame 18; 19. Second support frame; 20. Lead screw and nut mechanism; 21. Sinking yaw motor; 22. Lifting yaw motor; 23. Lead screw and nut mechanism; 24. Side turning yaw motor; Lever nut mechanism.

Detailed ways

The present invention will be described in further detail below through specific examples.

Example 1

As shown in Figures 1 to 3, a driving device for a toilet bowl 1 includes a toilet bowl 1 and a control mechanism for driving the toilet bowl 1. The toilet bed is provided with a toilet mouth 17, and the control mechanism is installed on the toilet The bottom of the toilet bed controls the toilet pan 1 to move to the bottom of the toilet opening 17 or to move away. The control mechanism includes a toilet pan bracket, the toilet pan 1 is placed on the toilet pan bracket, and the toilet pan bracket is hinged by a yaw link mechanism At the bottom of the toilet bed and on one side of the toilet mouth 17, preferably, the hinged position between the yaw link mechanism and the bottom of the toilet bed is located on one side in the width direction of the toilet mouth 17, and the bracket rotating shaft 12 is located at The other side of the width direction of toilet seat mouth 17. In this way, the yaw link mechanism drives the toilet bowl 1 to be closer to the left side or the right side of the toilet bed when the toilet pan 1 is deflected, which is convenient for cleaning the toilet bowl 1 .

The other side of the toilet opening 17 is provided with a yaw bracket 4, the upper end of which is hinged on the bottom of the toilet bed, and the yaw bracket 4 is provided with a bracket for blocking the toilet opening 17. Blocking plate 5, the blocking plate 5 in the present embodiment is a rectangular frame plate, the two sides of this blocking plate 5 are bent perpendicular to its own plate body, like this, when the deflection support 4 deflects in place, the sealing The body of the blocking plate 5 stretches into the toilet seat 17 and is flush with the bed board 16 .

A driving link 3 is hinged between the yaw bracket 4 and the yaw link mechanism, and a yaw power device is installed on the bottom of the toilet bed, and the yaw power device drives the yaw bracket 4 to yaw Make the blocking plate 5 or the toilet bowl 1 swing to the toilet mouth 17 to cooperate with it.

The bedpan bracket includes a lower bracket 6 and a bedpan placement frame 7, the lower bracket 6 is welded on the lower part of the bedpan placement frame 7, the yaw link mechanism is hinged on the lower bracket 6 and the bottom of the toilet bed, and the bedpan placement frame 7 is fixed Above the lower bracket 6 , the lower bracket 6 includes two poles with bent ends, and the yaw link mechanism is hinged on the corresponding bent parts of the connecting rods.

As shown in Figures 1 and 3, the bedpan placement frame 7 includes a frame body arranged in a well-shaped shape, and several upwardly bent support plate parts 8 are arranged on the frame body, and each support plate part 8 constitutes a The supporting space that the bedpan 1 is adapted to.

The yaw link mechanism includes four first connecting rods 2 parallel to each other, the upper ends of the four first connecting rods 2 are hinged on the bottom of the toilet bed, and the lower ends of the four first connecting rods 2 are hinged on the bedpan bracket On the top, specifically hinged on the lower bracket 6, the number of the drive link 3 is two and arranged in parallel, one end of the drive link 3 is hinged on the yaw bracket 4, and the other end of the drive link 3 is hinged on the yaw The middle part of the two first connecting rods 2 adjacent to the bracket 4 .

The yaw bracket 4 is swingably installed on the bottom of the toilet bed through the bracket shaft 12, one end of the driving link 3 is hinged to the middle of the swing bracket through the first hinge shaft 13, and the other end is hinged to the middle part of the swing bracket through the second hinge shaft 14. The middle part of the first connecting rod 2; when the blocking plate 5 is matched with the toilet seat 17, the first hinge shaft 13 is located above the line connecting the second hinge shaft 14 and the center of the bracket shaft 12, and occurs at the swing bracket 4 During yaw, the yaw bracket 4 will first push the first link 2 to swing away from the toilet opening 17 by driving the connecting rod 3, so that the swing bracket can be given enough yaw space, and then the yaw bracket 4 will drive the first connecting rod 2 to swing. Bar 2 swings to make toilet bowl 1 cooperate with toilet mouth 17.

The yaw power unit includes a yaw motor 10, the yaw motor 10 is hinged on the bottom of the toilet bed through the motor hinge shaft, and the articulated arm 11 is welded on the support shaft 12, the output shaft of the yaw motor 10 is connected to the A lead screw nut mechanism 9 is connected between the articulated arms 11, the lead screw of the lead screw nut mechanism 9 is connected with the output shaft of the yaw motor 10, the screw sleeve of the lead screw nut mechanism 9 is hinged on the articulated arm 11, and the articulated arm 11 It is welded on the support shaft 12 and deflected together with it.

Example 2

As shown in Fig. 4 to Fig. 7, a toilet bed of the driving device of the toilet pan 1, the toilet bed includes a bed frame 15, a bed board 16 is placed on the bed frame 15, and a bed board 16 is provided with Referring to the toilet opening 17, the driving device of the toilet pan 1 is arranged at the bottom of the bed frame 15, and the bed board 16 includes a first bed board 161, a second bed board 162, a third bed board 163 and a fourth bed board 164. Between the bed board 161 and the second bed board 162, between the second bed board 162 and the third bed board 163, between the third bed board 163 and the fourth bed board 164 are respectively hinged by hinges extending along the width direction, so that the first bed board 161 and The second bed board 162 can deflect around the width direction, the second bed board 162 and the third bed board 163 can deflect around the width direction, and the third bed board 163 and the fourth bed board 164 can deflect around the width direction. The mouth 17 is arranged on the third bed board 163, and the bottom of the bed frame 15 is installed with a sinking and yaw driving device that drives the second bed board 162 to deflect and sink, and drives the fourth bed board 164 to tilt and lift relative to the third bed board 163. The lifting yaw drive unit.

The sinking yaw driving device includes a sinking yaw motor 21 hinged at the bottom of the bed frame 15, and the bottom of the second bed board 162 and the bottom of the first bed board 161 are respectively fixed with the second support frame 19 and the first support frame. Frame 18, the first support frame 18 is fixed on the bottom of the first bed board 161, and one end of the first support frame 18 and the second support frame 19 is hinged, and the other end of the second support frame 19 is hinged on On the bed frame 15, the output shaft of the sinking yaw motor 21 is hinged with the middle part of the second support frame 19 through the lead screw nut mechanism 20. Similarly, the middle part of the second support frame 19 is also provided with a convenient and lead screw nut mechanism. The articulated arm 11 is articulated by a lead screw of 20.

The third bed board 163 and the fourth bed board 164 respectively include two third bed board halves 1631 and a fourth bed board half 1641, and the third bed board halves 1631 and the fourth bed board halves 1641 pass through The hinge shafts extending along the length direction are hinged to each other, and a side turning drive device for driving the deflection between the two fourth bed board halves 1641 is arranged between the two fourth bed board halves 1641 .

As shown in Fig. 4 to Fig. 7, the structure of the side turning driving device is similar to that of lifting the yaw driving device, the side turning body driving device includes a side turning body yaw motor 24 and a screw nut mechanism 25, and the output of the side turning body yaw motor 24 The shaft is connected with the leading screw, and the nut of the leading screw nut mechanism 25 and the side turning body yaw motor 24 are respectively hinged between the two fourth bed board half bodies 1641 . And lifting the yaw driving device includes lifting the yaw motor 22 and the leading screw nut mechanism 23, the output shaft of the lifting yaw motor 22 is connected with the leading screw of the leading screw nut mechanism 23, and its nut is hinged on the fourth bed board 164 , Lift the yaw motor 22 and be hinged on the bed frame 15. Respective motors drive the lead screw of the lead screw nut mechanism to rotate, and then the lead screw nut mechanism is elongated or shortened to complete the swing of the respective parts.

The executive devices such as the motor mentioned in this embodiment, and the lead screw and nut mechanism are all current conventional technologies, which were detailed in the "Machine Design Manual Fifth Edition" printed on the twenty-eighth edition of the fifth edition in Beijing in April 2008. The specific structure and principle and other designs of cylinders, motors and other transmission mechanisms are disclosed. It belongs to the prior art, and its structure is clear. The third edition of modern practical pneumatic technology SMC published by Mechanical Industry Press on August 1, 2008 In the training materials, the vacuum components, gas circuit and program control are disclosed in detail, which shows that the gas circuit structure in this embodiment is also an existing technology, which is clear and clear. It was published by the Chemical Industry Press on July 01, 2015. The book "Motor Drive and Speed Regulation" also introduces the control of the motor and the limit switch in detail, so the circuit and air circuit connections are clear.

The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. On the basis of not departing from the design spirit of the present invention, any deformation and transformation made to the technical solution of the present invention shall fall within the scope of the present invention. Into the scope of protection determined by the claims of the present invention.

Claims (10)

1. A toilet pan driving device, comprising a toilet pan and a control mechanism for driving the action of the toilet pan, the toilet seat is provided with a toilet opening, and the control mechanism is installed on the bottom of the toilet bed to control the toilet pan to move to the toilet Below or removed from the mouth, it is characterized in that: the control mechanism includes a bedpan support, the toilet seat is placed on the bedpan support, and the bedpan support is hinged at the bottom of the toilet bed through a deflection link mechanism and is located on the toilet seat One side of the mouth, the other side of the toilet mouth is provided with a yaw bracket, the upper end of the yaw bracket is hinged on the bottom of the toilet bed, and the yaw bracket is provided with a A blocking plate, a driving link is hinged between the yaw bracket and the yaw link mechanism, and a yaw power device is installed on the bottom of the toilet bed, and the yaw power device drives the yaw bracket to deflect Swing to make the blocking board or the toilet bowl swing to the toilet mouth to cooperate with it. 2. A toilet pan driving device as claimed in claim 1, wherein the toilet pan support includes a lower bracket and a bedpan placement frame, and the yaw link mechanism is hinged to the lower bracket and the bottom of the toilet bed, so that The bedpan placement frame is fixed above the lower bracket. 3. A toilet pan driving device as claimed in claim 2, characterized in that: the toilet pan placement frame includes a frame body arranged in a well-shaped shape, and several upwardly bent support plates are arranged on the frame body, each The support board part constitutes a support space adapted to the toilet pan. 4. A toilet pan driving device according to any one of claims 1 to 3, characterized in that: the yaw link mechanism includes four first connecting rods parallel to each other, and the four first connecting rods The upper end of the upper end is hinged on the bottom of the toilet bed, the lower ends of the four first connecting rods are hinged on the bedpan bracket, the number of the driving connecting rods is two and arranged in parallel, and one end of the driving connecting rod is hinged on the yaw bracket, The other end of the drive link is hinged at the middle of the two first links adjacent to the yaw bracket. 5. A toilet pan driving device according to claim 4, characterized in that: the yaw bracket is oscillatingly installed on the bottom of the toilet bed through the bracket rotating shaft, and one end of the driving link is hinged through the first hinge shaft In the middle of the swing bracket, the other end is hinged to the middle of the first connecting rod through the second hinge shaft; when the blocking plate is matched with the toilet opening, the first hinge shaft is located on the line connecting the second hinge shaft and the center of the bracket shaft above. 6. A toilet pan driving device as claimed in claim 5, characterized in that: said yaw power device comprises a yaw motor, said yaw motor is hinged to the bottom of the toilet bed through a motor hinge shaft, and the bracket shaft An articulated arm is welded on the top, and a lead screw nut mechanism is connected between the output shaft of the yaw motor and the articulated arm. The lead screw of the lead screw nut mechanism is connected with the output shaft of the yaw motor, and the screw sleeve of the lead screw nut mechanism Hinged on a hinged arm. 7. A toilet pan driving device according to claim 6, characterized in that: the hinged position between the yaw link mechanism and the bottom of the toilet bed is located on one side of the width direction of the toilet opening, and the rotating shaft of the bracket is located The other side of the width direction of the toilet. 8. A toilet bed using the toilet bowl drive device in claim 1, characterized in that: the toilet seat comprises a bed frame, a bed board is placed on the bed frame, and the seat board is arranged on the bed board. The toilet port, the toilet pan driving device is arranged at the bottom of the bed frame, the bed board includes a first bed board, a second bed board, a third bed board and a fourth bed board, between the first bed board and the second bed board, the second bed board Between the bed board and the third bed board, between the third bed board and the fourth bed board are respectively hinged by hinge shafts extending along the width direction, the toilet opening is arranged on the third bed board, and the bottom of the bed frame is equipped with a driving first The sinking yaw driving device for deflecting and sinking of the second bed board, and the lifting yaw driving device for driving the fourth bed board to lift relative to the deflection of the third bed board. 9. A toilet bed as claimed in claim 8, characterized in that: the sinking yaw driving device comprises a sinking yaw motor hinged at the bottom of the bed frame, the bottom of the second bed board and the first The bottom of the bed board is respectively fixed with a second support frame and a first support frame, the first support frame is fixed on the bottom of the first bed board, the first support frame is hinged with one end of the second support frame, and the first support frame is fixed on the bottom of the first bed board. The other end of the two support frames is hinged on the bed frame, and the output shaft of the sinking yaw motor is hinged with the middle part of the second support frame through a screw nut mechanism. 10. A toilet bed according to claim 9, wherein the third bed board and the fourth bed board respectively comprise two third bed board halves and a fourth bed board half body, and the third bed board half Both the body and the fourth bed half body are hinged to each other through the hinge shaft extending along the length direction, and a side turning body that drives the deflection between the two fourth bed half bodies is arranged between the two fourth bed half bodies drive unit.