CN116459099A

CN116459099A - Bedsore-preventing multifunctional nursing bed

Info

Publication number: CN116459099A
Application number: CN202211344268.8A
Authority: CN
Inventors: 魏煌; 张波; 孙勇
Original assignee: Xiamen Situo Medical Technology Co ltd
Current assignee: Xiamen Situo Medical Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-07-21

Abstract

The invention relates to the technical field of nursing equipment, in particular to a multifunctional bedsore-preventing nursing bed. A multifunctional bedsore-preventing nursing bed comprises a base, a bedsore-preventing component, a nursing component and a table top component which are sequentially arranged from bottom to top; the base is used for supporting the bedsore component, the nursing component and the table-board component. The bedsore prevention assembly is used for alternately lifting the first grid plate strip group and the second grid plate strip group of the table top assembly; the table top component is divided into at least two row areas in the length direction, and each row area is also divided into at least two column areas in the width direction; the nursing component is used for driving the same-row area of the table top component to turn over together so as to achieve the effect of left turning over and/or right turning over, and driving the same-row area of the table top component to turn over together so as to achieve the effect of standing up and/or leg bending; the transverse movement problem of the table top component is solved through the design that the overturning bracket and the table top component always keep surface contact in the overturning process.

Description

Bedsore-preventing multifunctional nursing bed

Technical Field

The invention relates to nursing equipment, in particular to a multifunctional bedsore-preventing nursing bed.

Background

Patients lying in bed for a long period face the problem of sustained compression of the local limb, which can cause bedsores if the limb is subjected to pressure for a long period to cause tissue hypoxia. Therefore, the patient lying in bed for a long time needs to turn over and activate the body frequently. The multifunctional nursing bed is available in the market to realize the turning action, wherein the turning action is realized mainly by means of the table top turning component to drive the table top to turn over, but in the process of turning over, the rotation shaft of the table top turning component and the rotation shaft of the table top turning over are not on the same shaft surface, so that the table top is transversely moved, and the use of a user is uncomfortable and inconvenient.

For example, document 1 discloses chinese patent CN112294558A with a day of 2021, 2 and 2, which discloses an anti-bedsore multifunctional nursing bed, wherein a nursing bed top component is divided into a neck-back region, a waist-hip region, a thigh region and a small foot region in a length direction, and each region is divided into three sections of left, middle and right hinged to each other in a width direction, in order to realize that four regions in the length direction are synchronously turned left or right, a turning bracket is required to be arranged on a lower component of the top component, the turning bracket and the top component structure in the document can be simplified into fig. 35, it can be seen that the turning bracket and the top component rotate in different axes, that is, a rotation axis P of the top component and a rotation axis P 'of the turning bracket in fig. 35 do not coincide, as the turning bracket lifts upwards, P' changes with a small distance along with rotation, but does not overlap P, so that a connecting line between P and a plane where the top component is located and a plane where the turning bracket is located form a triangle continuously changing, the turning bracket and a straight line where the top component is located at a Q point, and the Q point is located are in contact, the turning bracket and the position is continuously located, which causes noise to be influenced by the noise, and the noise is caused to change, and the user experiences the following the defect that the change is caused by the rotation and the rotation:

1. The triangle mentioned above is constantly changing, which will cause the center of gravity of the upturned portion of the mesa to be constantly displaced, and the mesa assembly will tend to be displaced horizontally to achieve force balance. As shown in fig. 36, when the turning bracket is turned at an angle of 30 °, the table top assembly is laterally moved (a lateral movement distance l= 36.57 mm), which adversely affects the feeling of experience of the patient.

2. If the table top assembly is horizontally displaced by a limited amount, the point P will drift upward to achieve force balance and structural stability, causing compression to the patient, while the hinge at point P will be subjected to significant pressure and be susceptible to damage.

Disclosure of Invention

In order to solve the defects of the prior art in the background art, the multifunctional bedsore-preventing nursing bed comprises a base, a bedsore-preventing assembly, a nursing assembly and a table top assembly which are sequentially arranged from bottom to top; the base is used for supporting the bedsore component, the nursing component and the table-board component. The bedsore prevention assembly is used for alternately lifting the first grid plate strip group and the second grid plate strip group of the table top assembly; the table top component is divided into at least two row areas in the length direction, and each row area is also divided into at least two column areas in the width direction; the nursing component is used for driving the same-row area of the table top component to turn over together so as to achieve the effect of left turning over and/or right turning over, and driving the same-row area of the table top component to turn over together so as to achieve the effect of standing up and/or leg bending.

The nursing assembly comprises a turning mechanism, the turning mechanism comprises a turning bracket and a turning driving mechanism, the turning bracket is used for enabling the same-row area of the table top assembly to synchronously turn over, the turning driving mechanism drives the turning bracket to rotate so as to drive the same-row area of the table top assembly to turn over, and in the turning process, the turning bracket always keeps surface contact with the table top assembly.

In a preferred embodiment, the care assembly further comprises a mount; the table top component comprises a left area, a middle area and a right area which are hinged in sequence along the width direction; the hinge shafts of the middle area and the left area are hinge shafts I, and the hinge shafts of the middle area and the right area are hinge shafts II; the turning driving mechanism comprises a first turning driving mechanism and a second turning driving mechanism.

One side of the turning bracket is hinged with the movable end of the first turning driving mechanism, and the other side of the turning bracket is hinged with the movable end of the second turning driving mechanism; the fixed ends of the first turning driving mechanism and the second turning driving mechanism are hinged to the fixed frame;

when the user turns left, the turning bracket turns over by taking the hinge shaft I as a rotating shaft, so that the right area and the middle area of the table top component are driven to synchronously turn over upwards; when turning over right, the turning-over bracket turns over by taking the hinge shaft II as a rotating shaft, so that the left area and the middle area are driven to synchronously turn over upwards.

In a preferred embodiment, the movable end of the first turning driving mechanism is hinged to a first hinging seat fixed on the turning bracket, and the movable end of the second turning driving mechanism is hinged to a second hinging seat fixed on the turning bracket; the hinge shaft of the first hinge seat is collinear with the hinge shaft II; the hinge shaft of the second hinge seat is collinear with the hinge shaft I;

preferably, the device also comprises a limiting mechanism hinged to the fixing frame; when the user turns left, the limiting mechanism limits the turning bracket to turn over only by taking the hinge shaft I as a rotating shaft; when turning right, the limiting mechanism limits the turning bracket to turn over only by taking the hinge shaft II as a rotating shaft.

In another embodiment, the device further comprises a limiting mechanism and an interference prevention mechanism; the turning driving mechanism is not collinear with the hinge shaft of the turning bracket and the hinge shaft I or the hinge shaft II;

the limiting mechanism is hinged to the fixing frame; when the user turns left, the limiting mechanism limits the turning bracket to turn over only by taking the hinge shaft I as a rotating shaft; when turning right, the limiting mechanism limits the turning bracket to only turn over by taking the hinge shaft II as a rotating shaft;

The anti-interference mechanism is used for preventing the turning-over bracket from interfering the limiting mechanism to rotate around the hinge shaft I or the hinge shaft II;

optionally, the anti-interference mechanism comprises third hinging seats positioned at the left side and the right side of the turning bracket, and the third hinging seats are provided with strip-shaped grooves; the movable end of the first turning driving mechanism is slidably hinged to the bar-shaped groove of the right third hinging seat so as to prevent the turning bracket from interfering the limiting mechanism to rotate around the hinging shaft I; the movable end of the second turning driving mechanism is slidably hinged to the strip-shaped groove of the third hinging seat at the left side, so that the turning bracket is prevented from interfering the limiting mechanism to rotate around the hinging shaft II.

In one embodiment, the limit mechanism comprises at least one set of first limit mechanisms and at least one set of second limit mechanisms;

the first limiting mechanism comprises a first fixed hinge, a first movable hinge and a first connecting rod; the first fixed hinge is fixed on the right side of the fixed frame, and the first movable hinge is fixed on the left side of the turning bracket; one end of the first connecting rod is hinged with the first fixed hinge, and the other end of the first connecting rod is hinged with the first movable hinge;

the second limiting mechanism comprises a second fixed hinge, a second movable hinge and a second connecting rod; the second fixed hinge is fixed on the left side of the fixed frame, and the second movable hinge is fixed on the right side of the turning bracket; one end of the second connecting rod is hinged with the second fixed hinge, and the other end of the second connecting rod is hinged with the second movable hinge;

The hinge shafts of the first fixed hinge and the second movable hinge are collinear with the hinge shaft I, and the hinge shafts of the second fixed hinge and the first movable hinge are collinear with the hinge shaft II;

preferably, the turnover bracket further comprises a locking mechanism, wherein the locking mechanism can lock the rotation shaft of the turnover bracket to be collinear with the hinge shaft I or the hinge shaft II when the turnover bracket turns over;

specifically, the locking mechanism comprises fourth hinging seats at the left side and the right side of the turning bracket, and the fixing frame is provided with door lock motors which are in one-to-one correspondence with the fourth hinging seats; the left side the fourth hinging seat is collinear with the hinging shaft I, and the right side the fourth hinging seat is collinear with the hinging shaft II.

In an embodiment, the fixing frame is provided with a limiting structure for preventing the turning-over bracket from moving along the length direction of the table top component.

In an embodiment, the table top assembly comprises a frame plate, a positioning block and a bed plate arranged on one surface of the frame plate facing the human body; the bed board consists of the first grid plate strip group and the second grid plate strip group; the first grid plate strip group and the second grid plate strip group comprise a plurality of grid plates, and the grid plates are connected with the positioning blocks; the frame plate is provided with a plurality of positioning grooves penetrating through the upper surface and the lower surface of the frame plate, and positioning blocks are connected in a sliding manner in the positioning grooves; the positioning block is driven to ascend by the bedsore prevention assembly to drive the grid plate strip connected with the positioning block to ascend; after losing the function of the bedsore prevention component, the positioning block and the grid plate strip connected with the positioning block descend together to restore to the original position under the self gravity.

In one embodiment, the outer wall surface of the positioning block is provided with a raised limit clamping block;

the wall surface of the positioning groove is concavely provided with a limiting groove, the limiting groove extends along the direction from the lower surface to the upper surface of the frame plate and does not penetrate through the upper surface of the frame plate, so that the inner wall surface of the positioning groove forms a step structure; the limiting clamping block is matched with the limiting groove, so that the limiting clamping block can slide in the limiting groove.

In one embodiment, the grid plate strip is detachably connected with the positioning block through clamping fit;

preferably, the grid plate strip is provided with a buckle, the positioning block is provided with a mounting hole, and the buckle is matched with the mounting hole so as to enable the grid plate strip to be connected with the positioning block through clamping of the buckle and the mounting hole.

In an embodiment, the bottom surface of the positioning block is provided with a groove with a trapezoid structure, the bedsore prevention assembly is provided with a jacking through for jacking the positioning block, and the middle part of the jacking through is provided with a ladder structure.

Based on the above, compared with the prior art, the multifunctional bedsore-preventing nursing bed provided by the invention has the following beneficial effects:

according to the invention, through the design of the table top overturning component and the matching of the overturning bracket and the table top component, the overturning function of the table top component is realized, the nursing function requirement is met, and the rehabilitation of patients is facilitated; in addition, the overturning bracket and the table top component are always in surface contact in the overturning process, so that the problems of transverse movement and noise of the table top component in overturning are solved, and the user experience is effectively improved; meanwhile, the stress of the hinge shaft of the table top component is reduced, the maintenance cost is reduced, and the service life is prolonged.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

For a clearer description of embodiments of the invention or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art; the positional relationships described in the drawings in the following description are based on the orientation of the elements shown in the drawings unless otherwise specified.

Fig. 1 is a schematic structural view of a multifunctional nursing bed for preventing bedsores in embodiment 1 provided by the invention;

fig. 2 is a schematic view showing a part of the structure of the multifunctional nursing bed for preventing bedsores in embodiment 1;

FIG. 3 is a schematic diagram showing the front structure of a mesa assembly according to embodiment 1 of the present invention;

FIG. 4 is a schematic diagram showing a front view of a mesa assembly according to embodiment 1;

FIG. 5 is a schematic view showing the structure of the back surface of the mesa assembly in example 1 according to the present invention;

FIG. 6 is an enlarged view of a portion of section B-B of FIG. 3;

FIG. 7 is an enlarged view of a portion of section C-C of FIG. 3;

FIG. 8 is an enlarged view of a portion of FIG. 5 at A;

FIG. 9 is a partially exploded view of the mesa assembly of embodiment 1 according to the present invention;

fig. 10 is a schematic structural view of a positioning block in embodiment 1 provided by the present invention;

fig. 11 is a schematic structural view of a bedsore prevention assembly in embodiment 1 provided by the present invention;

fig. 12 is a schematic diagram of a second structure of the bedsore prevention assembly in embodiment 1 provided by the present invention;

fig. 13 is a schematic structural view of a nursing assembly in embodiment 1 provided by the present invention;

fig. 14 is a second schematic structural view of the care component in embodiment 1 according to the present invention;

fig. 15 is a schematic view of a third structure of the care assembly in embodiment 1 provided by the present invention;

FIG. 16 is an enlarged view of a portion of the structure at D in FIG. 15;

FIG. 17 is an enlarged view of a portion of the structure at E in FIG. 15;

FIG. 18 is an enlarged view of a part of the structure at F in FIG. 15;

fig. 19 is an enlarged view of a partial structure at G in fig. 15;

fig. 20 is a partially exploded view of the nursing assembly of embodiment 1 provided by the present invention;

Fig. 21 is a schematic view of a structure of a turnover bracket in embodiment 1 provided by the present invention;

fig. 22 is a schematic diagram II of a turnover bracket in embodiment 1;

fig. 23 is a schematic view of a use state of the second limiting mechanism in embodiment 1 provided by the present invention;

fig. 24 is a schematic structural view of a base in embodiment 1 provided by the present invention;

FIG. 25 is an enlarged view of a part of the structure at H in FIG. 1;

FIG. 26 is an enlarged view of a portion of the structure at I in FIG. 15;

fig. 27 is a schematic view showing a use state of the turning mechanism in embodiment 1 provided by the present invention;

fig. 28 is a schematic view of the structure of the tray in embodiment 2 provided by the present invention;

fig. 29 is a schematic diagram of a second tray structure in embodiment 2 according to the present invention;

FIG. 30 is an enlarged view of a portion of the structure at J in FIG. 28;

FIG. 31 is an enlarged view of a portion of the structure at K in FIG. 29;

FIG. 32 is a schematic view of the tray and table top assembly of embodiment 2 provided by the present invention;

FIG. 33 is an enlarged view of a partial structure at M and L in FIG. 32;

fig. 34 is a schematic view showing a use state of the turning mechanism in embodiment 2 provided by the present invention;

FIG. 35 is a schematic view of a state of use of the turning mechanism in the prior art;

fig. 36 is a schematic view of a conventional turning mechanism with a rotation axis not coaxial with the rotation axis of the table assembly to cause lateral movement.

Reference numerals:

100 tabletop assemblies; 200 a care assembly; 300 anti-decubitus assemblies; a 400 base; 500 coaming plates; 600 guard rails; 110 frame plates; 120 positioning blocks; 130 bed boards; 140 frame hinge connection structure; 111 positioning grooves; 1111 limit grooves; 1112 a step structure; 121 limit clamping blocks; 122 grooves; 123 mounting holes; 131 a first set of grid straps; 132 a second set of grid straps; 1311 first grid strips; 1321 a second grid bar; 13111 snap-fit; 130a left segment of the nape region; 130b mid-neck dorsal region; 130c right segment of the nape region; 130d left section of the lumbar region; 130e mid-waist and buttocks region; 130f right section of lumbar region; 130g left thigh area; 130h mid-thigh area; 130i right thigh area; 130j left leg region; 130k mid-calf region; 130m right leg region; a first jacking unit 310; 320 a second jacking unit; 330 lifting the driving mechanism; 340 jacking; 311 first cross bar; 321 second cross bar; 341 a step structure; 210 fixing frame; 220 a turning-over mechanism; 230 a back lifting mechanism; 240 leg bending mechanisms; 211 limit structure; 221 turn-over bracket; 222 turn-over driving mechanism; 223 first limit mechanism; 224 a second spacing mechanism; 225 a locking mechanism; 226 support frames; 227 first hinge mount; 228 a second hinge mount; 229 an interference prevention mechanism; 2291 a third hinge base; 2292 bar-shaped grooves; 2231 a first fixed hinge; 2232 a first living hinge; 2233 a first link; 2241 second fixed hinges; 2242 a second living hinge; 2243 second links; 2251 a fourth hinge seat; 2252 door lock motor; 2221 first turn-over drive mechanism; 2222 second turn-over driving mechanism; 231 lift back drive mechanism; 232 a first axis of rotation; 233 lifting the back support rod; 241 leg bending driving mechanism; 242 a second axis of rotation; 243 leg-bending support rods; 410 chassis; 420 a base lifting mechanism; 430 universal wheels; 421 linkage; 422 a base drive mechanism;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention; the technical features designed in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The present invention provides a multifunctional bedsore prevention nursing bed as shown in embodiment 1 of fig. 1-26 and embodiment 2 of fig. 27-34, comprising a base 400, a bedsore prevention assembly 300, a nursing assembly 200 and a table top assembly 100, a coaming 500 and a guard rail 600.

The base 400 is used to support the three components of the bedsore assembly 300, the nursing assembly 200 and the table top assembly 100. The anti-decubitus assembly 300 is used to alternately raise and lower the first and second sets of grid slats 131, 132 of the table top assembly 100. The mesa assembly 100 is divided into at least two rows of regions in a length direction, and each of the rows of regions is also divided into at least two columns of regions in a width direction. The care assembly 200 is used for driving the same row of the table top assembly 100 to turn over together to achieve the effects of turning left and right, and driving the same row of the table top assembly 100 to turn over together to achieve the effects of raising and/or leg bending.

For the mesa assembly 100:

as shown in fig. 3-10, the table top assembly 100 includes a frame plate 110, a positioning block 120, and a bed plate 130 provided on a side of the frame plate 110 facing the human body; the bed board 130 comprises a plurality of grid plates, and the grid plates are connected with the positioning blocks 120; the frame plate 110 is provided with a plurality of positioning grooves 111 penetrating through the upper surface and the lower surface of the frame plate 110, a positioning block 120 is slidably connected in the positioning grooves 111, and the positioning block 120 is driven to rise by an external force (which can be a jacking 340 described below) to drive a grid plate bar connected with the positioning block 120 to rise; after the positioning block 120 loses the external force (the top through 340 moves downwards), the positioning block 120 and the grid plate strip connected with the positioning block descend together under the self gravity to restore to the original position. Because the positioning blocks 120 and the positioning grooves 111 are used for positioning the positions of the grid strips, in the use process, the grid strips are accurately lifted to be in place and fall by combining the gravity of a human body and the positioning grooves 111, the phenomenon of stacking the grid strips can be avoided, and the bedsore prevention function of the nursing bed is met.

Specifically, as shown in fig. 6-7, the outer wall surface of the positioning block 120 is provided with a horizontal protruding limiting clamping block 121; a limiting groove 1111 is formed on the wall surface of the positioning groove 111, the limiting groove 1111 extends along the direction from the lower surface to the upper surface of the frame plate 110, and does not penetrate to the upper surface of the frame plate 110, so that the inner wall surface of the positioning groove 111 forms a step structure 1112; the limit clamping block 121 is matched with the limit groove 1111, so that the limit clamping block 121 can slide in the limit groove 1111. When the positioning block 120 is used, the positioning block 120 is lifted upwards to drive the grid plate strip, the limiting clamping block 121 slides in the limiting groove 1111 until the limiting clamping block 121 abuts against the step structure 1112 at the top end of the limiting groove 1111, and at the moment, the positioning block 120 slides in place, and the grid plate strip is lifted in place; the limiting sliding of the positioning block 120 in the positioning groove 111 is realized.

As shown in fig. 6-7, the grid strips are preferably removably attached to the locating blocks 120 by a snap fit. Specifically, the grid plate strip is provided with a buckle 13111, the positioning block 120 is provided with a mounting hole 123, the buckle 13111 is matched with the mounting hole 123, and the grid plate strip is connected with the positioning block 120 through the buckling of the buckle 13111 and the mounting hole 123. The arrangement is simple in structure, convenient to install, low in cost, and convenient to replace and maintain, and the grid plate strips are detachable from the positioning blocks 120.

The grid plates of the bedplate 130 are divided into a first grid plate strip group 131 and a second grid plate strip group 132; the first louver group 131 includes a plurality of first louvers 1311, the second louver group 132 includes a plurality of second louvers 1321, and the first louvers 1311 and the second louvers 1321 are staggered along the length direction of the frame plate 110. As shown in fig. 3-4, by dividing the bed board 130 into the first grid bar 131 and the second grid bar 132, in use, the first grid bar 131 and the second grid bar 1321 can be lifted alternately, so as to achieve a wave effect, which is more beneficial to bedsore prevention than the design of lifting part of the blocks.

For anti-decubitus assembly 300:

as shown in fig. 11 to 12, the bedsore prevention assembly 300 includes a first elevating unit 310, a second elevating unit 320, and an elevating driving mechanism 330 for driving the first elevating unit 310 and the second elevating unit 320 to alternately ascend. The first jacking unit 310 includes a plurality of first cross bars 311 that are synchronously linked, the second jacking unit 320 includes a plurality of second cross bars 321 that are synchronously linked, and the first cross bars 311 and the second cross bars 321 are staggered along the length direction of the frame plate 110; each first louver 1311 has a first cross bar 311 corresponding thereto, and the first cross bar 311 is configured to abut against the corresponding first louver 1311; each second grid 1321 has a second cross bar 321 corresponding thereto, and the second cross bar 321 is configured to abut against the corresponding second grid 1321.

When in use, the jacking driving mechanism 330 drives the first jacking unit 310 to lift, so as to drive the synchronously linked first transverse bars 311 to lift, and as the first transverse bars 311 are in one-to-one correspondence with the first grid bars 1311, the first transverse bars 311 lift and prop against the corresponding first grid bars 1311, so that the first grid bars 1311 lift, and the first transverse bars 311 descend, so that the first grid bars 1311 fall under the action of gravity; the second lifting unit 320 drives the second grid strip 1321 to lift, by the above design, to realize the function that the bedsore prevention assembly 300 drives the first grid strip group 131 and the second grid strip group 132 to lift alternately, so as to realize the fluctuation effect of the table top assembly 100. It should be noted that, the speed of alternating fluctuation of the first grating strip set 131 and the second grating strip set 132 may be set according to the requirement, and when the alternating fluctuation speed is high, a good massage effect may be achieved, where the initial working position of the massage function is that the first grating strip set 131 and the second grating strip set 132 are both at the lowest position; when the alternating heave velocity is low, the table top assembly 100 forms a partial hollow, so as to achieve the ventilation and bedsore prevention effect, wherein the initial working position of the ventilation and bedsore prevention function is that the first grid slat group 131 and the second grid slat group 132 are at the highest position.

Specifically, the first jacking unit 310 includes a plurality of first transverse bars 311 and an inner transverse bar connected to the first transverse bars 311, and the second jacking unit 320 includes a plurality of second transverse bars 321 and an outer transverse bar connected to the second transverse bars 321; the jacking driving mechanism 330 includes two jacking driving mechanisms 330 for driving the first jacking unit 310 to lift and driving the second jacking unit 320 to lift, respectively.

The first transverse bar 311 and the second transverse bar 321 are respectively provided with a jacking passage 340; the positioning blocks 120 on each first grid 1311 have a top through 340 on the first rail 311 corresponding to the top through 340, and the positioning blocks 120 on each second grid 1321 have a top through 340 on the second rail 321 corresponding to the top through 340, where the top through 340 is used to abut against the corresponding positioning block 120. So configured, the lifting of the first rail 311 or the second rail 321 translates into the lifting of the top opening 340 thereon, which is ultimately transferred to the first grid 1311 or the second grid 1321, to achieve a wave effect in the table assembly 100.

The anti-decubitus assembly 300 further includes a guide post and guide sleeve structure. The two jacking driving mechanisms 330 are driven alternately, so that the first jacking unit 310 and the second jacking unit 320 are driven to accurately lift under the positioning of the guide post and guide sleeve structure. Specifically, the jacking driving mechanism adopts a fluctuating electric cylinder, further specifically four fluctuating electric cylinders, the first jacking driving mechanism is provided with a group, the second jacking driving mechanism is provided with a group, the two first jacking driving mechanisms are respectively arranged at the front part and the rear part of the bedsore prevention assembly 300, the second jacking driving mechanism is also the same, and under the software control action, the first jacking driving mechanism and the second jacking driving mechanism alternately stretch and retract, thereby driving the inner and outer beam assemblies to accurately lift under the positioning of the guide post and the guide sleeve, and finally transmitting the beams to the grid lath. It should be noted that the anti-decubitus assembly 300 may be configured in a variety of ways to perform the above-described functions, including but not limited to the embodiment.

In a preferred embodiment, the bottom surface of the positioning block 120 is provided with a groove 122 with a trapezoid structure, and the top width of the top through 340 is smaller than or equal to the minimum width of the groove 122; a step structure 341 is disposed in the middle of the top through 340, and the maximum width of the step structure 341 is greater than the width of the positioning slot 111. The inclined sides of the groove 122 have guiding function, which is beneficial to ensuring that the propping-up passage 340 is positioned in the middle of the groove 122 when the propping-up passage 340 contacts with the positioning block 120. The inclined plane of step structure 341 contacts with the bottom border of constant head tank 111, is favorable to improving the smoothness that top leads to 340 goes up and down, avoids top leading to and 340 constant head tank 111 lateral wall to take place to interfere and causes the condition such as card to stop.

For care assembly 200

The care assembly 200 includes a turn-over mechanism 220, a back-up mechanism 230, a leg-bending mechanism 240, and a mount 210 carrying the back-up mechanism 230, the leg-bending mechanism 240, and the turn-over mechanism 220.

For cooperation with the turning-over mechanism 220, the back lifting mechanism 230 and the leg bending mechanism 240 of the nursing assembly 200, the table top assembly 100 adopts the following structure:

as shown in fig. 3, the table top assembly 100 in this embodiment includes twelve sections, that is, the frame plate 110 includes 12 sub-frame plates 110, and is formed by hinge-connecting and assembling the three-folded twelve sub-frame plates 110, and the table top assembly 100 includes a left neck-back section 130a, a middle neck-back section 130b, a right neck-back section 130c, a left waist-hip section 130d, a middle waist-hip section 130e, a right waist-hip section 130f, a left thigh section 130g, a middle thigh section 130h, a right thigh section 130i, a left calf section 130j, a middle calf section 130k, and a right calf section 130m.

Specifically, the tabletop assembly 100 includes, along its length, a neck-back region, a waist-hip region, a thigh region, and a calf region (i.e., the in-line regions submitted above) that are sequentially hinged (connected by the frame hinge connection structure 140), and includes, along its width, a left region, a middle region, and a right region that are sequentially hinged (connected by the frame hinge connection structure 140); the nape region, the lumbar region, the thigh region, and the calf region are each divided into three sections, left, middle, and right, that are hinged to each other (connected by the frame hinge connection 140) along the width direction of the tabletop assembly 100.

The left cervical region segment 130a, the left lumbar region segment 130d, the left thigh region segment 130g, and the left calf region segment 130j are connected by a rotational connection (frame hinge connection 140 connection) along the width direction of the tabletop assembly 100 between adjacent two to form a left region (the same column region submitted above); the neck-back region middle section 130b, the waist-hip region middle section 130e, the thigh region middle section 130h, and the shank region middle section 130k are adjacently connected by a rotation (frame hinge connection 140) along the width direction of the table top assembly 100 to constitute a middle region (the same column region submitted above); the right region (the in-line region submitted above) is formed by a rotational connection (frame hinge connection 140 connection) along the width direction of the tabletop assembly 100 between adjacent ones of the cervical-back region right segment 130c, the lumbar-hip region right segment 130f, the thigh region right segment 130i and the calf region right segment 130 m.

The table top component 100 is designed to be a three-fold and twelve-block structure, so that a user can be prevented from being extruded in the turning process, and the nursing function requirement is met; in use, the three sections of the left section, the middle section and the right section are connected through rotation (the frame hinge connection structure 140 is connected) along the length direction of the table top assembly 100, so that the three sections of the back area are synchronously lifted when the back is lifted; when the feet are bent, the three sections of the thigh area and the shank area are lifted synchronously. When turning over, each section of the left area, the middle area and the right area can be synchronously turned over.

The turning-over mechanism 220:

the turning mechanism 220 includes a turning bracket 221 and a turning driving mechanism 222, the turning bracket 221 is used for synchronously turning over the same-column region (such as the left region, the middle region and the right region mentioned above) of the table top assembly 100, the turning driving mechanism 222 drives the turning bracket 221 to rotate so as to drive the same-column region of the table top assembly 100 to turn over, and the turning bracket 221 and the table top assembly 100 always keep surface contact during the turning process. Because the two keep surface contact all the time in the rotation process, the problem of transverse movement (displacement in the width direction) of the table top component 100 during turning is solved, noise is reduced, the stress of the turning connection part of the turning bracket 221 in the long-term use process is small, the turning bracket is not easy to twist, and the structural stability of the turning bracket 221 is improved.

The table top assembly 100 is divided into twelve areas, but the table top assembly 100 may be divided into two rows of areas in the width direction (for example, only the back bending function has no leg bending function or only the leg bending function has no back bending function), may be divided into two rows of areas in the width direction (for example, the leg bending function has the leg bending function and the back bending function, but the leg area is not divided into the thigh and the shank), may be divided into three rows of areas in the width direction, and may be divided into three rows of areas in the length direction, and the design concept that the turnover bracket 221 and the table top assembly 100 always keep surface contact is equally applicable.

The following is a detailed description of the technique for maintaining the roll-over bracket 221 in surface contact with the table top assembly 100 at all times. The table top assembly 100 according to the following technical scheme is composed of three regions, i.e., a left region, a middle region, and a right region, wherein the hinge axis between the middle region and the left region of the table top assembly 100 is defined as a hinge axis i, and the hinge axis between the middle region and the right region is defined as a hinge axis ii. The turning-over driving mechanism 222 includes a first turning-over driving mechanism 2221 and a second turning-over driving mechanism 2222; one side of the turnover bracket 221 is hinged with the movable end of the first turnover driving mechanism 2221, and the other side is hinged with the movable end of the second turnover driving mechanism 2222; and the fixed ends of the first turning driving mechanism 2221 and the second turning driving mechanism 2222 are both hinged to the fixing frame 210.

(1) As shown in example 1 of fig. 1-26:

in this embodiment, the turning-over driving mechanism 222 is not collinear with the hinge axis of the turning-over bracket 221 and the hinge axis i or ii, and preferably, the hinge axis of the turning-over driving mechanism 222 and the turning-over bracket 221 is located at the inner lower side of the turning-over bracket 221. The turning bracket 221 and the table top assembly 100 always keep surface contact by being provided with a limiting mechanism and an interference prevention mechanism 229 in the present embodiment. Specifically, the limiting mechanism is used to limit the turning bracket 221 so that it can only rotate about the hinge axis i or the hinge axis ii. The anti-interference mechanism 229 is used to prevent the turning-over bracket 221 from interfering with the rotation of the limiting mechanism around the hinge axis i or the hinge axis ii.

In particular, as shown in FIGS. 27-34, the stop mechanism includes at least one set of first stop mechanisms 223 and at least one set of second stop mechanisms 224. Preferably, two first limit mechanisms 223 and two second limit mechanisms 224 are provided, respectively distributed at the front and rear of the turn-over bracket 221.

The first limiting mechanism 223 includes a first fixed hinge 2231, a first movable hinge 2232, and a first link 2233; the first fixed hinge 2231 is fixed to the right side of the fixed frame 210, and the first movable hinge 2232 is fixed to the left side of the turn-over bracket 221; one end of the first link 2233 is hinged to the first fixed hinge 2231, and the other end is hinged to the first movable hinge 2232. The second limiting mechanism 224 includes a second fixed hinge 2241, a second movable hinge 2242, and a second link 2243; the second fixed hinge 2241 is fixed to the left side of the fixed frame 210, and the second movable hinge 2242 is fixed to the right side of the turn-over bracket 221; one end of the second link 2243 is hinged to the second fixed hinge 2241, and the other end is hinged to the second movable hinge 2242. The hinge axes of the first fixed hinge 2231 and the second movable hinge 2242 are collinear with the hinge axis ii, and the hinge axes of the second fixed hinge 2232 and the first movable hinge 2241 are collinear with the hinge axis i. In use, the rotational axis of the first fixed hinge 2231 (i.e., hinge axis ii) serves as the rotational axis of the first limiting mechanism 223; the rotation axis (hinge axis i) of the second stationary hinge 2241 serves as the rotation axis of the second stopper mechanism 224.

When the first turning driving mechanism 2221 operates, the right side of the turning bracket 221 is lifted, the turning bracket 221 drives the second limiting mechanism 224 to rotate along with the second movable hinge 2242, and because the second limiting mechanism 224 can only rotate around the hinge shaft (namely the hinge shaft i) of the second fixed hinge 2241, the turning bracket 221 can only rotate around the hinge shaft i under the limitation of the second limiting mechanism 224, so that left turning is realized, and the turning bracket 221 and the table top assembly 100 keep surface contact all the time. Similarly, when the second turning driving mechanism 2222 turns, the turning bracket 221 rotates along the first fixed hinge 2231 to realize right turning.

In order to avoid interference to rotation of the turnover bracket 221 around the hinge axis i or ii, in this embodiment, an interference prevention mechanism 229 is specially provided, because the turnover bracket 221 rotates continuously, so that the position of the hinge seat of the turnover bracket 221 and the stationary turnover driving mechanism 222 also shifts continuously. As shown in fig. 26-27, the interference prevention mechanism 229 includes third hinge seats 2291 located on the left and right sides of the turnover bracket 221, and the third hinge seats 2291 are provided with bar-shaped grooves 2292; the movable end of the first turning driving mechanism 2221 is slidably hinged to the bar-shaped groove 2292 of the third hinge seat 2291 on the right side, so as to avoid the turning bracket 221 from interfering the limiting mechanism to rotate around the hinge shaft i; the movable end of the second turning driving mechanism 2222 is slidably hinged to the bar-shaped groove 2292 of the third hinge seat 2291 on the left side, so as to avoid the turning bracket 221 interfering with the limiting mechanism to rotate around the hinge axis ii when the second turning driving mechanism 2222 operates to raise the left side of the turning bracket 221.

Further, optionally, the mid-section 130e of the lumbar and hip region is fixedly coupled to the turn-over bracket 221 to secure the table top assembly 100 in position locally to the turn-over bracket 221.

Further, optionally, locking mechanisms 225 are respectively added on the left side and the right side of the turning bracket 221, and the locking mechanisms 225 can lock the rotation shaft of the turning bracket 221 to be collinear with the hinge axis i or the hinge axis ii when the turning bracket 221 turns over. Specifically, the locking mechanism 225 includes fourth hinge seats 2251 on the left and right sides of the turnover bracket 221, and the fixing frame 210 is provided with door lock motors 2252 corresponding to the fourth hinge seats 2251 one by one; the fourth hinge seat 2251 on the left is collinear with the hinge axis i, and the fourth hinge seat 2251 on the right is collinear with the hinge axis ii.

The specific working process comprises the following steps: when the turnover bracket 221 turns left, the right door lock motor 2252 of the turnover bracket 221 does not work, the left door lock motor 2252 works, the working door lock motor 2252 stretches the motor shaft to complete the rotation connection with the fourth hinge seat 2251 (the motor shaft stretches into the through hole of the fourth hinge seat 2251), so that the turnover bracket 221 and the fixing frame 210 form a hinge structure, the close contact between the turnover bracket 221 and the table top assembly 100 is further ensured, after the left turnover is completed, the left door lock motor 2252 resets, otherwise, when the right turnover is completed, the same is true.

Further, optionally, supporting frames 226 are respectively disposed on the left and right sides of the turning bracket 221. Support frames 226 are provided on the left and right sides of the turn-over bracket 221 to facilitate the overall turning over of the left and right regions of the table top assembly 100.

(2) As in embodiment 2 of fig. 27-34:

in this embodiment, the turn-over driving mechanism 222 is collinear with the hinge axis of the turn-over bracket 221 and the hinge axis i or ii. 27-34, the movable end of the first turning-over driving mechanism 2221 is hinged to a first hinge seat 227 fixed on the turning-over bracket 221, and the movable end of the second turning-over driving mechanism 2222 is hinged to a second hinge seat 228 fixed on the turning-over bracket 221; the hinge shaft of the first hinge base 227 is collinear with the hinge shaft i; the hinge axis of the second hinge seat 228 is collinear with the hinge axis ii. Because the rotation axis of the turning bracket 221 coincides with the rotation axis of the table top assembly 100, the turning bracket 221 and the table top assembly 100 always keep surface contact during rotation.

When in use, the first turning-over driving mechanism 2221 drives one side edge of the turning-over bracket 221 to lift, the second turning-over driving mechanism 2221 does not operate, the turning-over bracket 221 rotates above the fixing frame 210 around the rotation axis of the second hinge seat 228, and when in rotation, the rotation axis of the turning-over bracket 221 is hinged and overlapped with the table top component 100 due to the fact that the rotation axis of the second hinge seat 228 is collinear with the hinge axis II, so that the turning-over bracket 221 and the table top component 100 always keep surface contact in the rotation process. The other direction of turning is the same as the above process, thereby realizing left-right turning.

Further, the above-mentioned limit mechanism may be optionally added in the present embodiment, and the specific structure of the limit mechanism is the same as that of embodiment 1.

Further, this embodiment can be selectively increased as in embodiment 1: the table top assembly 100 is fixed in position locally to the turn-over bracket 221; a locking mechanism 225; the support 226, etc. one structure or a combination of structures.

It should be noted that, in the above-mentioned embodiment 1-2, the turning mechanism 220 is structurally designed to be turned left and right by matching with the three-fold table top assembly 100, but is not limited to the case of being suitable for double-sided turning, and is also suitable for single-sided turning, including but not limited to the above-mentioned embodiment.

Back lifting mechanism 230:

as shown in fig. 14, the lift mechanism 230 is located below the tabletop assembly 100 and is used to lift the nape region. The back lifting mechanism 230 comprises a back lifting driving mechanism 231, a first rotating shaft 232 and a back lifting support rod 233; the first rotating shaft 232 is rotatably installed on the fixing frame 210, one end of the back lifting support rod 233 is fixedly connected to the first rotating shaft 232, and the other end is a free end; the lifting driving mechanism 231 is used for driving the first rotating shaft 232 to rotate, so as to drive the lifting support rod 233 to rotate upwards, and the free end of the lifting support rod 233 abuts against the nape region, so as to drive the nape region to rotate. Preferably, the free ends of the back supporting rods 233 are provided with rollers.

When in use, the back lifting driving mechanism 231 drives the first rotating shaft 232 to rotate, so as to drive the back lifting supporting rod 233 to rotate upwards, the free end of the back lifting supporting rod 233 abuts against the neck and back area, and further the neck and back area is driven to rotate around the hinge connection position, so that the back lifting function is realized.

The back lifting mechanism 230 includes a plurality of back lifting support rods 233, and the plurality of back lifting support rods 233 are uniformly arranged on the first rotating shaft 232. The arrangement is convenient for synchronously lifting all parts of the neck and back area; four back support bars 233 are provided in this embodiment, and one skilled in the art may make adaptations, including but not limited to embodiment solutions.

Leg bending mechanism 240:

as shown in fig. 14, the leg curl mechanism 240 is located below the table top assembly 100, and the leg curl mechanism 240 is configured to raise the thigh area or the calf area. The leg bending mechanism 240 includes a leg bending driving mechanism 241, a second rotating shaft 242, and a leg bending support rod 243; the second rotating shaft 242 is rotatably disposed on the fixing frame 210, one end of the leg-bending supporting rod 243 is fixedly connected to the second rotating shaft 242, and the other end thereof is a free end; the leg bending driving mechanism 241 is configured to drive the second rotating shaft 242 to rotate, so as to drive the leg bending supporting rod 243 to rotate upwards, and the free end of the leg bending supporting rod 243 abuts against the thigh area, so as to drive the thigh area or the calf area to rotate. Preferably, the free end of the leg-bending support rod 243 is provided with a roller. The leg bending mechanism 240 includes a plurality of leg bending support rods 243, and the plurality of leg bending support rods 243 are uniformly arranged on the second rotating shaft 242.

By the arrangement, all parts of the thigh area are lifted synchronously; the present embodiment provides four leg curl support bars 243, which can be adapted by those skilled in the art, including but not limited to embodiment solutions.

Specifically, the first rotating shaft 232 and the second rotating shaft 242 are rotatably mounted on the fixing frame 210 through a swivel hinge. The back lifting driving mechanism 231 and the leg bending driving mechanism 241 adopt electric cylinders, and the rotating shafts are driven to rotate through the expansion and contraction of the electric cylinders, so that power is converted into thrust for the rollers to roll along the table top, and the back lifting and leg bending functions are realized. Other existing drive mechanisms, including but not limited to embodiment versions, can also be employed for the lift drive mechanism 231 and the leg curl drive mechanism 241 in accordance with the concepts described above.

Further, the turn-over driving mechanism 222 is located below the waist and hip region, and is separated from the back lifting mechanism 230 and leg bending mechanism 240, so as to avoid blocking.

In a preferred embodiment, the fixing frame 210 is provided with a limiting structure 211 for preventing the turning-over bracket 221 from moving along the length direction of the table top assembly 100, i.e. preventing the table top assembly 100 from being displaced in the length direction after the table top assembly 100 is moved back or leg bending and reset. The limiting structure 211 may be a limiting baffle. So configured, the turn-over bracket 221 is blocked from moving along the length direction of the table top assembly 100, thereby enhancing the user experience.

As shown in fig. 16-19, the front and rear parts of the right side edge of the turning bracket 221 are respectively provided with a first limiting structure 211; the front end of the first movable hinge 2232 positioned at the front part is provided with a limit baffle, the rear end of the first movable hinge 2232 positioned at the rear part is provided with a limit baffle, the front end of the second movable hinge 2242 positioned at the front part is provided with a limit baffle, and the rear end of the second movable hinge 2242 positioned at the front part is provided with a limit baffle; and/or, the rear end of the first movable hinge 2232 positioned at the front part is provided with a limit baffle, the front end of the first movable hinge 2232 positioned at the rear part is provided with a limit baffle, the rear end of the second movable hinge 2242 positioned at the front part is provided with a limit baffle, and the front end of the second movable hinge 2242 positioned at the rear part is provided with a limit baffle.

Thus, four turning-over positioning baffles are arranged in the front and the back, and the turning-over bracket 221 is closely attached to the turning-over positioning baffles to limit the position of the bed plate 130 in the length direction.

For base 400:

as shown in fig. 24, the chassis 410 is connected to the fixing frame 210, and is used for driving the fixing frame 210, and the bedsore prevention unit 300 and the nursing unit 200 to be installed with the fixing frame 210 to be lifted and lowered together. The base 400 includes a chassis 410 and a base lifting mechanism 420; the base lifting mechanism 420 comprises a link mechanism 421 which is connected on the chassis 410 in a sliding way, and a base 400 driving mechanism which drives the link mechanism 421 to slide on the chassis 410; the link mechanism 421 comprises a slide bar which is in sliding connection with the chassis 410 and a cross bar which is connected with the slide bar; the base driving mechanism 422 drives the sliding rod to slide, so as to drive the cross rod to move up and down. Specifically, this example is provided with two sets of base lifting mechanisms 420; the left and right sides of the base 400 are provided with C-shaped channel steel components, the slide bars of the two groups of link mechanisms 421 are provided with POM slide blocks, and under the action of the two base driving mechanisms 422, the POM slide blocks of the link mechanisms 421 slide back and forth in the channel steel, so that the lifting, forward tilting and backward tilting actions of the superstructure (bedstead and the like) are realized. Preferably, a universal wheel 430 is provided under the chassis 410. This arrangement allows for flexible rotation of the base 400. The base 400 driving mechanism adopts a lifting electric cylinder. It should be noted that: chassis 410 may take a variety of configurations including, but not limited to, an embodiment.

For coaming 500:

the coaming 500 is sleeved on the periphery of the bedsore prevention assembly 300, the nursing assembly 200 and the table top assembly 100; and preferably a pendant mounting mechanism may be provided on the shroud 500. Above-mentioned chinese style bounding wall 500 structure accords with most house nursing demands, and the installation is very convenient moreover, combines hanging member installation mechanism on standard pendant and the bedstead, can high-efficient installation and dismantlement, and the practicality is very high.

For guardrail 600:

guard rails 600 are arranged on the left side and the right side above the table top assembly 100, so that the table top assembly can be used for protection, and is convenient and practical.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A multifunctional nursing bed for preventing bedsores, which is characterized in that: comprises a base (400), an anti-bedsore component (300), a nursing component (200) and a table top component (100) which are sequentially arranged from bottom to top;

The base (400) is used for supporting three components, namely a bedsore component (300), a nursing component (200) and a table top component (100); the bedsore prevention assembly (300) is used for alternately lifting a first grid slat group (131) and a second grid slat group (132) of the table top assembly (100);

the table top assembly (100) is divided into at least two rows of regions in a length direction, and each row of regions is also divided into at least two columns of regions in a width direction;

the nursing component (200) is used for driving the same-row area of the table top component (100) to turn over together so as to achieve the effect of left turning over and/or right turning over, and driving the same-row area of the table top component (100) to turn over together so as to achieve the effect of standing up and/or leg bending;

the nursing assembly (200) comprises a turnover mechanism (220), the turnover mechanism (220) comprises a turnover bracket (221) and a turnover driving mechanism (222), the turnover bracket (221) is used for enabling the same-row area of the table top assembly (100) to synchronously turn over, the turnover driving mechanism (222) drives the turnover bracket (221) to rotate so as to drive the same-row area of the table top assembly (100) to turn over, and in the turning process, the turnover bracket (221) is always in surface contact with the table top assembly (100).

2. The multifunctional nursing bed for preventing bedsores according to claim 1, wherein: the care assembly (200) further comprises a mount (210); the table top assembly (100) comprises a left area, a middle area and a right area which are hinged in sequence along the width direction; the hinge shafts of the middle area and the left area are hinge shafts I, and the hinge shafts of the middle area and the right area are hinge shafts II; the turnover driving mechanism (222) comprises a first turnover driving mechanism (2221) and a second turnover driving mechanism (2222);

One side of the turning bracket (221) is hinged with the movable end of the first turning driving mechanism (2221), and the other side of the turning bracket is hinged with the movable end of the second turning driving mechanism (2222); the fixed ends of the first turning driving mechanism (2221) and the second turning driving mechanism (2222) are hinged to the fixed frame (210);

when the user turns left, the turning bracket (221) turns over by taking the hinge shaft I as a rotating shaft, so that the right area and the middle area of the table top assembly (100) are driven to synchronously turn upwards; when turning over right, the turning-over bracket (221) turns over by taking the hinge shaft II as a rotating shaft, so that the left area and the middle area are driven to synchronously turn over upwards.

3. The multifunctional nursing bed for preventing bedsores according to claim 2, wherein: the movable end of the first turning driving mechanism (2221) is hinged to a first hinging seat (227) fixed on the turning bracket (221), and the movable end of the second turning driving mechanism (2222) is hinged to a second hinging seat (228) fixed on the turning bracket (221); the hinge shaft of the first hinge seat (227) is collinear with the hinge shaft I; the hinge shaft of the second hinge seat (228) is collinear with the hinge shaft II;

preferably, the device also comprises a limiting mechanism hinged to the fixing frame (210); when turning over left, the limiting mechanism limits the turning-over bracket (221) to only turn over by taking the hinge shaft I as a rotating shaft; when turning right, the limiting mechanism limits the turning bracket (221) to only turn around by taking the hinge shaft II as a rotating shaft.

4. The multifunctional nursing bed for preventing bedsores according to claim 2, wherein: the device also comprises a limiting mechanism and an interference prevention mechanism (229); the turning driving mechanism (222) is not collinear with the hinge shaft of the turning bracket (221) and the hinge shaft I or the hinge shaft II;

the limiting mechanism is hinged to the fixing frame (210); when turning over left, the limiting mechanism limits the turning-over bracket (221) to only turn over by taking the hinge shaft I as a rotating shaft; when turning right, the limiting mechanism limits the turning bracket (221) to only turn over by taking the hinge shaft II as a rotating shaft;

the anti-interference mechanism (229) is used for preventing the turning-over bracket (221) from interfering the limiting mechanism to rotate around the hinge shaft I or the hinge shaft II;

optionally, the anti-interference mechanism (229) comprises third hinging seats (2291) positioned at the left side and the right side of the turnover bracket (221), and the third hinging seats (2291) are provided with strip-shaped grooves (2292); the movable end of the first turning driving mechanism (2221) is slidably hinged to the bar-shaped groove (2292) of the third hinging seat (2291) on the right side, so that the turning bracket (221) is prevented from interfering the limiting mechanism to rotate around the hinging shaft I; the movable end of the second turning driving mechanism (2222) is slidably hinged to the strip-shaped groove (2292) of the third hinging seat (2291) at the left side, so that the turning bracket (221) is prevented from interfering the limiting mechanism to rotate around the hinging shaft II.

5. The multifunctional nursing bed for preventing bedsores according to claim 3 or 4, wherein: the limiting mechanisms comprise at least one group of first limiting mechanisms (223) and at least one group of second limiting mechanisms (224);

the first limiting mechanism (223) comprises a first fixed hinge (2231), a first movable hinge (2232) and a first connecting rod (2233); the first fixed hinge (2231) is fixed on the right side of the fixed frame (210), and the first movable hinge (2232) is fixed on the left side of the turning bracket (221); one end of the first connecting rod (2233) is hinged with the first fixed hinge (2231), and the other end of the first connecting rod is hinged with the first movable hinge (2232);

the second limiting mechanism (224) comprises a second fixed hinge (2241), a second movable hinge (2242) and a second connecting rod (2243); the second fixed hinge (2241) is fixed on the left side of the fixed frame (210), and the second movable hinge (2242) is fixed on the right side of the turning bracket (221); one end of the second connecting rod (2243) is hinged with the second fixed hinge (2241), and the other end of the second connecting rod is hinged with the second movable hinge (2242);

the hinge shafts of the first fixed hinge (2231) and the second movable hinge (2242) are collinear with the hinge shaft II, and the hinge shafts of the second fixed hinge (2241) and the first movable hinge (2232) are collinear with the hinge shaft I;

Preferably, the turnover device further comprises a locking mechanism (225), wherein the locking mechanism (225) can lock the rotation shaft of the turnover bracket (221) to be collinear with the hinging shaft I or the hinging shaft II when the turnover bracket (221) is turned over;

specifically, the locking mechanism (225) comprises fourth hinging seats (2251) on the left side and the right side of the turning bracket (221), and the fixing frame (210) is provided with door lock motors (2252) which are in one-to-one correspondence with the fourth hinging seats (2251); the left side fourth hinging seat (2251) is collinear with the hinging shaft I, and the right side fourth hinging seat (2251) is collinear with the hinging shaft II.

6. The multifunctional nursing bed for preventing bedsores according to any one of claims 1 to 4, wherein: the fixing frame (210) is provided with a limiting structure (211) for preventing the turning-over bracket (221) from moving along the length direction of the table top component (100).

7. The multifunctional nursing bed for preventing bedsores according to any one of claims 2 to 4, wherein: the table top assembly (100) comprises a frame plate (110), a positioning block (120) and a bed plate (130) arranged on one surface of the frame plate (110) facing the human body; the bed plate (130) is composed of the first grid plate strip group (131) and the second grid plate strip group (132); the first grating strip group (131) and the second grating strip group (132) comprise a plurality of grating strips, and the grating strips are connected with the positioning blocks (120); a plurality of positioning grooves (111) penetrating through the upper surface and the lower surface of the frame plate (110) are formed in the frame plate (110), and positioning blocks (120) are connected in a sliding mode in the positioning grooves (111); the positioning block (120) is driven to ascend by the bedsore prevention assembly (300) to drive the grid plate strip connected with the positioning block to ascend; after the positioning block loses the function of the bedsore prevention assembly (300), the positioning block (120) and the grid plate strip connected with the positioning block descend together under the self gravity to restore to the original position.

8. The multifunctional nursing bed for preventing bedsores according to claim 7, wherein: the outer wall surface of the positioning block (120) is provided with a raised limit clamping block (121);

a limit groove (1111) is concavely arranged on the wall surface of the positioning groove (111), the limit groove (1111) extends along the direction from the lower surface to the upper surface of the frame plate (110) and does not penetrate to the upper surface of the frame plate (110), so that the inner wall surface of the positioning groove (111) forms a step structure (1112); the limiting clamping block (121) is matched with the limiting groove (1111) so that the limiting clamping block (121) can slide in the limiting groove (1111).

9. The multifunctional nursing bed for preventing bedsores according to claim 8, wherein: the grid plate strip is detachably connected with the positioning block (120) through clamping fit;

preferably, the grid plate strip is provided with a buckle (13111), the positioning block (120) is provided with a mounting hole (123), and the buckle (13111) is matched with the mounting hole (123) so as to enable the grid plate strip to be connected with the positioning block (120) through clamping of the buckle (13111) and the mounting hole (123).

10. The bedsore-preventing multifunctional nursing bed as claimed in claim 9, characterized in that the bottom surface of the positioning block (120) is provided with a groove (122) with a trapezoid structure, the bedsore-preventing assembly (300) is provided with a jacking through (340) jacking the positioning block (120), and the middle part of the jacking through (340) is provided with a stair structure (341).