阅读说明：本技术 一种自动翻身气垫床及其充气方法 (Automatic turning air cushion bed and inflating method thereof ) 是由 吕丽 于 2021-03-01 设计创作，主要内容包括：本发明属于气垫床技术领域,具体的说是一种自动翻身气垫床及其充气方法,包括垫体；所述垫体底端设有收纳腔,所述收纳腔内部的底面上连接有一组限位板,所述限位板顶端分别开设有滑腔,所述滑腔顶端滑动连接有滑板,且相邻两滑板与收纳腔的底面所组成的腔室中分别设有气囊,所述气囊一侧分别连通有分流管,所述分流管上分别设有气流阀,所述分流管的另一端均与总流管相连,所述总流管的另一端与外界的气泵相连；本发明能够使得气囊所托起的垫体更高效的形成坡度,从而能够使得患者在倾斜垫体的作用下实现便捷的翻身,不仅省时省力,同时也减少手动对患者翻身时对患者造成的二次伤害,大大提高了气垫床的使用效果。(The invention belongs to the technical field of air cushion beds, in particular to an automatic turning over air cushion bed and an inflation method thereof, which comprises a cushion body; the bottom end of the cushion body is provided with a containing cavity, the bottom surface inside the containing cavity is connected with a group of limiting plates, the top ends of the limiting plates are respectively provided with a sliding cavity, the top ends of the sliding cavities are connected with sliding plates in a sliding mode, air bags are respectively arranged in cavities formed by two adjacent sliding plates and the bottom surface of the containing cavity, one side of each air bag is respectively communicated with a flow dividing pipe, each flow dividing pipe is provided with an air flow valve, the other end of each flow dividing pipe is connected with a main flow pipe, and the other end of each main flow pipe is connected with an external; the invention can enable the cushion body supported by the air bag to form the slope more efficiently, thereby enabling a patient to conveniently turn over under the action of the inclined cushion body, saving time and labor, reducing secondary injury to the patient caused by manual turning over of the patient, and greatly improving the using effect of the air cushion bed.)

1. An automatic turning over air cushion bed comprises a cushion body (1); the method is characterized in that: the mattress is characterized in that a containing cavity (2) matched with the mattress body (1) in shape is arranged at the bottom end of the mattress body (1), elastic telescopic layers (3) are respectively connected between two sides of the mattress body (1) and the side walls of the containing cavity (2), a group of uniformly distributed limiting plates (4) are connected on the bottom surface inside the containing cavity (2), sliding cavities (5) are respectively arranged at the top ends of the limiting plates (4), sliding plates (6) are slidably connected at the top ends of the sliding cavities (5), a first spring (7) is connected between each sliding plate (6) and the inner end of each sliding cavity (5), air bags (8) extending along the length direction of the mattress body (1) are respectively arranged in cavities formed by two adjacent sliding plates (6) and the bottom surface of the containing cavity (2), shunt tubes (9) are respectively communicated with one side of each air bag (8), airflow valves are respectively arranged on the shunt tubes (9), and the other ends of the shunt tubes, the other end of the main flow pipe (10) is connected with an external air pump.

2. The automatic turning air cushion bed as claimed in claim 1, wherein: the top end of the air bag (8) is respectively connected with a binding plate (11), the top surface of the binding plate (11) is respectively and rotatably connected with a group of rollers (12), and the side walls of the rollers (12) are attached to the bottom surface of the cushion body (1).

3. The automatic turning air cushion bed as claimed in claim 2, wherein: the bottom surface of the storage cavity (2) corresponding to the bottom end of the air bag (8) is connected with a positioning column (13), the top end of the positioning column (13) is provided with a sliding groove (14), the inner end of the sliding groove (14) is connected with a positioning rod (15), the bottom ends of the positioning rod (15) and the sliding groove (14) are connected with an elastic body (16), and the top end of the positioning rod (15) penetrates through the air bag (8) and is fixedly connected with the bottom surface of the attaching plate (11).

4. The automatic turning air cushion bed as claimed in claim 3, wherein: the cross-sectional shape of attaching plate (11) is the arc form, just the both ends of attaching plate (11) can restrict the top both sides of gasbag (8) and expand to one side that is close to slide (6).

5. The automatic turning air cushion bed as claimed in claim 4, wherein: one side of the sliding plate (6) close to the air bag (8) is provided with a group of evenly distributed limiting cavities (17), the limiting cavities (17) are connected with cylindrical limiting blocks (18) in a sliding manner, the limiting blocks (18) are connected through connecting rods (19), the outer ends of the limiting blocks (18) positioned at the bottom ends are provided with fixing blocks (20), the bottom ends of the fixing blocks (20) are provided with fixing grooves (21), a second spring (22) is connected between the limiting blocks (18) and the inner ends of the limiting cavities (17), the inner ends of the limiting cavities (17) are respectively connected with positioning pieces (23), the outer ends of the positioning pieces (23) are connected with the limiting blocks (18) in a sliding manner, one side of the top end of the sliding cavity (5) close to the air bag (8) is provided with an inclined extrusion surface (24), and a slide way (25) communicated with the top surface of the sliding cavity (5, slide (25) bottom inside sliding connection has piston (26), be connected with between piston (26) and slide (25) inner wall elasticity piece (27), slide (25) top sliding connection has and fixed slot (21) matched with dead lever (28).

6. The automatic turning air cushion bed as claimed in claim 5, wherein: shutoff groove (29) have been seted up respectively at the upper and lower both ends of stopper (18) outer end, shutoff groove (29) inside sliding connection has shutoff piece (30), be connected with elastic component (31) between shutoff piece (30) and shutoff groove (29) the inner, one side outer end that shutoff piece (30) are close to spacing chamber (17) is provided with inclined plane (32) respectively.

7. The automatic turning air cushion bed as claimed in claim 6, wherein: the outer end of the fixing groove (21) is provided with a funnel-shaped cavity (33) with an opening gradually increasing from inside to outside.

8. An automatic turning air cushion bed inflation method, which is suitable for the air cushion bed of any one of claims 1-7, and is characterized by comprising the following steps:

s1: firstly, the air pump is used for inflating the inside of the cushion body (1) so that the cushion body (1) is expanded and a patient is supported;

s2: then, the air pump and the air flow valve are respectively used for inflating the air bags (8) corresponding to the shunt tubes (9), so that the amount of gas inflated by the air bags (8) is gradually increased from the air bags (8) in the middle to the air bags (8) on the side parts, the cushion body (1) supported by the air bags (8) forms an arc-shaped slope, and the patient can turn over under the action of the inclined cushion body (1);

s3: and then the air pump and the air flow valve are used for controlling the inflated air bags (8) to deflate, and the air quantity in each air bag (8) is the same, so that the cushion body (1) at the top ends of the air bags (8) is in a horizontal state again.

Technical Field

The invention belongs to the technical field of air cushion beds, and particularly relates to an automatic turning air cushion bed and an inflation method thereof.

Background

The medical air cushion bed is mainly used for preventing and relieving bedsores of long-term bedridden patients, and is difficult to move when patients need to be locally treated and nursed on all parts of a body due to the fact that the patients are used or do not have independent consciousness or are inconvenient to move, physical strength of nursing staff is increased, and the patients can be injured improperly.

Some technical solutions related to air cushion beds also appear in the prior art, such as a chinese patent, patent No. 2014101134465, which proposes an automatic turning over air cushion bed and an inflation method thereof, including a bed frame and air cushions disposed on the bed frame, characterized in that the air cushions include an upper layer and a lower layer, wherein the upper layer of air cushions is divided into a first sub-air cushion region, a second sub-air cushion region and a third sub-air cushion region along the length direction of the bed frame according to the positions of the head, chest, hip, leg and foot of a human body, and each sub-air cushion region includes two sub-air cushion air bags along the width direction of the bed frame; the lower air cushion is composed of a first air cushion area and a second air cushion area which are composed of a plurality of air bags arranged along the length direction of the bed frame; wherein each sub-air cushion of the sub-air cushion regions and the two air cushion regions comprise respective independent air path controls. The invention reduces the risk that a patient rolls off the bed edge when turning over by conventional manpower and also reduces the physical strength of medical staff.

Although the automatic turning-over air cushion bed in the technology can realize automatic turning-over of a patient through independent inflation and deflation of the air bags, the air bags expand towards the periphery when inflated, so that the expansion and extension effects of the air bags in the longitudinal direction are not obvious, the height change of the jacked air cushion bed is slow, and the automatic turning-over effect of the air cushion bed is influenced.

In view of the above, the invention provides an automatic turning-over air cushion bed and an inflation method thereof, so that a cushion body supported by an air bag forms an arc-shaped slope more efficiently, a patient can conveniently turn over under the action of an inclined cushion body, time and labor are saved, secondary injury to the patient caused by manual turning-over of the patient is reduced, and the use effect of the air cushion bed is greatly improved.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the automatic turning air cushion bed and the inflation method thereof, so that the cushion body supported by the air bag can form an arc-shaped slope more efficiently, the patient can conveniently turn over under the action of the inclined cushion body, time and labor are saved, secondary injury to the patient caused by manual turning over of the patient is reduced, and the use effect of the air cushion bed is greatly improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic turning over air cushion bed comprises a cushion body; the bottom end of the cushion body is provided with a containing cavity matched with the cushion body in shape, elastic telescopic layers are respectively connected between two sides of the cushion body and the side walls of the containing cavity, the bottom surface inside the containing cavity is connected with a group of uniformly distributed limiting plates, the top ends of the limiting plates are respectively provided with a sliding cavity, the top end of the sliding cavity is connected with a sliding plate in a sliding manner, a first spring is connected between the sliding plate and the inner end of the sliding cavity, air bags extending along the length direction of the cushion body are respectively arranged in cavities formed by two adjacent sliding plates and the bottom surface of the containing cavity, one side of each air bag is respectively communicated with a flow dividing pipe, an air flow valve is respectively arranged on each flow dividing pipe, the other ends of the flow dividing pipes are all connected with; when the automatic turning-over air cushion bed works, although the automatic turning-over of a patient can be realized through the independent inflation and deflation of the air bags in the prior art, the air bags expand towards the periphery during inflation, so that the expansion and extension effects of the air bags in the longitudinal direction are not obvious, the height change of the jacked air cushion bed is slow, and the automatic turning-over effect of the air cushion bed is influenced; when the air cushion bed is used, when the air pump fills air into the air bag through the flow dividing pipe, the limiting plates on the two sides of the air bag can limit the expansion of the air bag towards the two sides, so that the air bag can expand and extend towards the top end more effectively, and the cushion body on the top is supported, meanwhile, the sliding plate is attached to the bottom surface of the cushion body under the action of the first spring, and when the air bag expands longitudinally, the sliding plate moves towards the top of the sliding cavity along with the continuous rising of the bottom surface of the cushion body under the pressure of the first spring, so that the side part of the air bag can be effectively limited under the action of the limiting plates and the sliding plate, so that the air bag can extend longitudinally better and the cushion body can be supported efficiently; when the patient that will lie on filling up the body when needs stand up, because each gasbag of separate flow intraduct air current valve can the independent control expand, make the gasbag have the difference at the gas that fills under the effect of air pump and air current valve, thereby make the vertical expanded height of gasbag produce the step difference, and make the body of filling up that the gasbag held up form curved slope, thereby can make the patient realize convenient standing up under the effect of the body of the slope pad, not only labour saving and time saving, the secondary injury that causes the patient when also reducing simultaneously manually standing up the patient, the result of use of air bed is greatly improved.

Preferably, the top ends of the air bags are respectively connected with a binding plate, the top surfaces of the binding plates are respectively and rotatably connected with a group of rollers, and the side walls of the rollers are bound with the bottom surface of the cushion body; when the air cushion bed works, when the air bag is inflated and longitudinally expands, the top end of the air bag can support the cushion body through the attaching plate, and meanwhile, the attaching plate can drive the roller to stably roll on the bottom surface of the cushion body when moving upwards, so that the situation that the air bag and the bottom surface of the cushion body are abraded too much due to direct relative movement of the air bag and the bottom surface of the cushion body or the cushion body does not move stably under the condition that the friction force between the air bag and the cushion body is large is prevented, and the using effect of the air cushion bed is further improved.

Preferably, a positioning column is connected to the bottom surface of the containing cavity corresponding to the bottom end of the airbag, a chute is formed in the top end of the positioning column, a positioning rod is connected to the inner end of the chute in a sliding manner, the positioning rod and the bottom end of the chute are connected with an elastic body, and the top end of the positioning rod penetrates through the airbag and is fixedly connected with the bottom surface of the attaching plate; during operation, sliding connection's reference column and locating lever can play the effect of vertical location to the laminating board position of motion, prevent that the laminating board is along with the inflation of gasbag and the condition that fills up the no longer laminating effect of body, have improved the stability and the validity of laminating board when using.

Preferably, the cross section of the attaching plate is arc-shaped, and two ends of the attaching plate can limit the expansion of two sides of the top end of the air bag to one side close to the sliding plate; during operation, through the shape that sets up the rigging board for the rigging board of concave surface shape can carry on spacingly to the inflation of gasbag top both sides, thereby makes the gasbag can vertically carry out more effectual inflation extension, and drives the pad body and carries out more efficient and hold up, has further improved the result of use of air cushion bed.

Preferably, one side of the sliding plate, which is close to the airbag, is provided with a group of evenly distributed limiting cavities, the inner parts of the limiting cavities are connected with cylindrical limiting blocks in a sliding manner, the limiting blocks are connected with each other through connecting rods, the outer ends of the limiting blocks, which are positioned at the bottom, are provided with fixing blocks, the bottom ends of the fixing blocks are provided with fixing grooves, a second spring is connected between the limiting blocks and the inner ends of the limiting cavities, the inner ends of the limiting cavities are respectively connected with positioning pieces, the outer ends of the positioning pieces are connected with the limiting blocks in a sliding manner, one side, which is close to the airbag, of the top end of the sliding cavity is provided with an inclined extrusion surface, a sliding way, which is communicated with the top surface of the sliding cavity, is arranged in the side; when the air bag expansion limiting device works, when the sliding plate gradually slides out of the sliding cavity, the limiting block compressed in the limiting cavity can be ejected out of the limiting cavity under the action of the second spring, when the air bag continues to expand, the side wall of the air bag can extrude the piston, so that the piston moves towards the inner end of the sliding way and drives the fixed rod to move towards the top end of the sliding way until the top end of the fixed rod is inserted into the fixed groove, so that the limiting block is fixed under the action of the connecting rod and the fixed rod at the same time, the limiting block protruding to the outer side of the sliding plate can limit the expansion of the side part of the air bag, so that the air bag can drive the cushion body to be supported more efficiently, meanwhile, the spherical limiting block can reduce the single-point acting force between the spherical limiting block and the expanded air bag, the air bag is prevented from being punctured or damaged by the limiting block, when the air bag finishes, make the stopper atress slide to spacing intracavity portion to make the stopper can be compressed in spacing intracavity portion, and then make the resetting of slide can effectively go on and can used repeatedly.

Preferably, the upper end and the lower end of the outer end of the limiting block are respectively provided with a plugging groove, a plugging block is connected in the plugging groove in a sliding manner, an elastic part is connected between the plugging block and the inner end of the plugging groove, and the outer end of one side of the plugging block, which is close to the limiting cavity, is respectively provided with an inclined plane; during operation, when the stopper is from the inside roll-off of spacing intracavity, the shutoff piece of being compressed in shutoff inslot portion this moment can stretch out to the stopper outer end under the effect of elastic component, the spacing area of stopper to the gasbag lateral part inflation has been increaseed, thereby make the gasbag can more effectual longitudinal expansion and drive the better rise of pad body, when the slide resets, the stopper can drive the shutoff piece and extrude with the face contact this moment, make the shutoff piece be impressed earlier inside the shutoff inslot, when the stopper contracts into spacing intracavity portion under the effect of extrusion face afterwards, the stopper can drive inclined plane on the shutoff piece and spout outer port extrusion mutually this moment, thereby make the shutoff piece can be smooth by the compression inside the shutoff inslot, and then make the reposition of slide can effectively go on and can used repeatedly.

Preferably, the outer end of the fixing groove is provided with a funnel-shaped cavity with an opening gradually increasing from inside to outside; the during operation, when the stopper that is equipped with the fixed block takes place to rock under the effect of external force, the dead lever was taken place the dislocation with the fixed slot easily this moment, and through the funnel chamber that sets up this moment, when the fixed slot takes place the dislocation with the dead lever, the dead lever top can drive this stopper through the lateral wall in extrusion funnel chamber and move this moment to make the dead lever can stabilize effectual the card of sliding into in the fixed slot and with it, improved the stability and the validity of dead lever and fixed slot when the cooperation.

An automatic turning over air cushion bed inflation method is suitable for the air cushion bed, and comprises the following steps:

s1: firstly, the air pump is used for inflating the inside of the cushion body, so that the cushion body is expanded and a patient is supported;

s2: then the air pump and the air flow valve respectively inflate the air bags corresponding to the shunt tubes, so that the amount of air inflated by the air bags is gradually increased from the air bags in the middle to the air bags on the side parts, the cushion body supported by the air bags forms an arc-shaped slope, and the patient can turn over under the action of the inclined cushion body;

s3: and then the air pump and the air flow valve are used for controlling the inflated air bags to deflate, and the air quantity in each air bag is the same, so that the cushion body at the top end of each air bag is in a horizontal state again.

The invention has the following beneficial effects:

1. according to the invention, through the air cushion bed, the air bag at the bottom end of the cushion body can be expanded and extended towards the top end more effectively, and the cushion body at the top part is supported, so that the cushion body supported by the air bag can form an arc-shaped slope more efficiently, and thus a patient can conveniently turn over under the action of the inclined cushion body, time and labor are saved, secondary injury to the patient caused by manual turning over of the patient is reduced, and the use effect of the air cushion bed is greatly improved.

2. According to the invention, the binding plate and the roller are arranged at the top end of the air bag, so that the situation that the air bag and the bottom surface of the cushion body are abraded too much due to direct relative movement of the air bag and the bottom surface of the cushion body or the cushion body moves unstably under the condition of large friction force with the air bag can be effectively prevented, and the using effect of the air cushion bed is further improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a diagram of the method steps of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic view of a partial structure of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 4;

in the figure: the cushion body 1, the accommodating cavity 2, the telescopic layer 3, the limiting plate 4, the sliding cavity 5, the sliding plate 6, the first spring 7, the air bag 8, the shunt tube 9, the total flow tube 10, the attaching plate 11, the roller 12, the positioning column 13, the sliding chute 14, the positioning rod 15, the elastic body 16, the limiting cavity 17, the limiting block 18, the connecting rod 19, the fixing block 20, the fixing groove 21, the second spring 22, the positioning piece 23, the extrusion surface 24, the sliding way 25, the piston 26, the elastic block 27, the fixing rod 28, the blocking groove 29, the blocking block 30, the elastic piece 31, the inclined plane 32 and the funnel-shaped cavity 33.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.

As shown in fig. 1-5, the air cushion bed for automatic turning over of the invention comprises a cushion body 1; the bottom end of the cushion body 1 is provided with a containing cavity 2 matched with the cushion body in shape, elastic telescopic layers 3 are respectively connected between two sides of the cushion body 1 and the side walls of the containing cavity 2, the bottom surface inside the containing cavity 2 is connected with a group of uniformly distributed limiting plates 4, the top end of each limiting plate 4 is provided with a sliding cavity 5, the top end of each sliding cavity 5 is connected with a sliding plate 6 in a sliding manner, a first spring 7 is connected between each sliding plate 6 and the inner end of each sliding cavity 5, air bags 8 extending along the length direction of the cushion body 1 are respectively arranged in a cavity formed by two adjacent sliding plates 6 and the bottom surface of the containing cavity 2, one sides of the air bags 8 are respectively communicated with a flow dividing pipe 9, an air flow valve is respectively arranged on each flow dividing pipe 9, the other ends of the flow dividing pipes 9 are all connected with a total; when the automatic turning-over air cushion bed works, although the automatic turning-over of a patient can be realized by the independent inflation and deflation of the air bags 8 in the prior art, the air bags 8 expand towards the periphery during inflation, so that the expansion and extension effects of the air bags 8 in the longitudinal direction are not obvious, the height change of the jacked air cushion bed is slow, and the automatic turning-over effect of the air cushion bed is influenced; when the air cushion bed is used, when the air pump fills air into the air bag 8 through the shunt pipe 9, the limiting plates 4 on the two sides of the air bag 8 can limit the expansion of the air bag 8 towards the two sides, so that the air bag 8 can expand and extend towards the top more effectively, the cushion body 1 at the top is supported, meanwhile, the sliding plate 6 is attached to the bottom surface of the cushion body 1 under the action of the first spring 7, when the air bag 8 expands longitudinally, the sliding plate 6 moves towards the top of the sliding cavity 5 under the pressure of the first spring 7 along with the continuous rising of the bottom surface of the cushion body 1, so that the side part of the air bag 8 can be effectively limited under the action of the limiting plates 4 and the sliding plate 6, the air bag 8 can extend longitudinally better, and the cushion body 1 is driven to be supported efficiently; when the patient who will lie on filling up the body 1 when rolling over as needs, because each gasbag 8 of independent control of the inside air flow valve of shunt tubes 9 can expand, make gasbag 8 there is the difference in the gas that fills under the effect of air pump and air flow valve, thereby make the height of 8 vertical inflation of gasbag produce the step difference, and make the body 1 that fills up that gasbag 8 held up form curved slope, thereby can make the patient realize convenient standing up under the effect of the body 1 is filled up in the slope, not only labour saving and time saving, the secondary injury that causes the patient when also reducing simultaneously manually to the patient stands up, the result of use of air cushion bed has been improved greatly.

As an embodiment of the invention, the top ends of the airbags 8 are respectively connected with a binding plate 11, the top surfaces of the binding plates 11 are respectively and rotatably connected with a group of rollers 12, and the side walls of the rollers 12 are attached to the bottom surface of the cushion body 1; when the air cushion bed works, when the air bag 8 is inflated and longitudinally expands, the top end of the air bag 8 can lift the cushion body 1 through the attaching plate 11, and meanwhile, the attaching plate 11 can drive the roller 12 to stably roll on the bottom surface of the cushion body 1 when moving upwards, so that the situation that the air bag 8 and the cushion body 1 are abraded too much due to direct relative movement of the bottom surfaces of the air bag 8 and the cushion body 1 or the cushion body 1 moves unstably under the condition of large friction force with the air bag 8 is prevented, and the using effect of the air cushion bed is further improved.

As an embodiment of the present invention, a positioning column 13 is connected to a bottom surface of the receiving cavity 2 corresponding to the bottom end of the airbag 8, a sliding groove 14 is formed at the top end of the positioning column 13, a positioning rod 15 is slidably connected to an inner end of the sliding groove 14, the positioning rod 15 and the bottom end of the sliding groove 14 are connected to an elastic body 16, and the top end of the positioning rod 15 penetrates through the airbag 8 and is fixedly connected to the bottom surface of the attachment plate 11; during operation, sliding connection's reference column 13 and locating lever 15 can play the effect of vertical location to the laminating board 11 position of motion, prevent that laminating board 11 is along with the inflation of gasbag 8 and the condition that fills up body 1 effect of no longer laminating, have improved the stability and the validity of laminating board 11 when using.

As an embodiment of the present invention, the cross-sectional shape of the attachment plate 11 is an arc shape, and both ends of the attachment plate 11 can limit both sides of the top end of the airbag 8 from expanding toward the side close to the sliding plate 6; during operation, through the shape that sets up rigging board 11 for the rigging board 11 of concave surface shape can carry on spacingly to the inflation of 8 top both sides of gasbag, thereby makes gasbag 8 can vertically carry out more effectual inflation extension, and drives to fill up body 1 and carry out more efficient and hold up, has further improved the result of use of air cushion bed.

As an implementation mode of the invention, one side of the sliding plate 6 close to the airbag 8 is provided with a group of evenly distributed limiting cavities 17, the limiting cavities 17 are connected with cylindrical limiting blocks 18 in a sliding manner, the limiting blocks 18 are connected with each other through connecting rods 19, the outer ends of the limiting blocks 18 at the bottom ends are provided with fixing blocks 20, the bottom ends of the fixing blocks 20 are provided with fixing grooves 21, a second spring 22 is connected between the limiting blocks 18 and the inner ends of the limiting cavities 17, the inner ends of the limiting cavities 17 are respectively connected with positioning pieces 23, the outer ends of the positioning pieces 23 are connected with the limiting blocks 18 in a sliding manner, one side of the top end of the sliding cavity 5 close to the airbag 8 is provided with an inclined extrusion surface 24, a slide way 25 communicated with the top surface of the sliding cavity 5 is arranged in the side wall of the sliding cavity 5 close to the airbag 8, a piston 26 is, the top end of the slide way 25 is slidably connected with a fixed rod 28 matched with the fixed groove 21; when the air bag cushion works, when the sliding plate 6 gradually slides out of the sliding cavity 5, the limiting block 18 compressed in the limiting cavity 17 can be ejected out of the limiting cavity 17 under the action of the second spring 22, when the air bag 8 continues to expand, the side wall of the air bag 8 can extrude the piston 26, so that the piston 26 moves towards the inner end of the slideway 25 and drives the fixed rod 28 to move towards the top end of the slideway 25 until the top end of the fixed rod 28 is inserted into the fixed groove 21, so that the limiting block 18 is simultaneously fixed under the action of the connecting rod 19 and the fixed rod 28, the limiting block 18 protruding to the outer side of the sliding plate 6 can limit the expansion of the side part of the air bag 8, so that the air bag 8 can drive the cushion body 1 to be supported more efficiently, meanwhile, the spherical limiting block 18 can also reduce the single-point acting force between the spherical limiting block 18 and the expanded air bag 8, and prevent, when the gasbag 8 finishes working and resets, the slide 6 can drive the limiting block 18 and the extrusion surface 24 contact extrusion of bottom when falling in step this moment for limiting block 18 atress slides to limiting cavity 17 is inside, thereby makes limiting block 18 can be compressed inside limiting cavity 17, and then makes resetting of slide 6 can effectively go on and can used repeatedly.

As an embodiment of the present invention, the upper and lower ends of the outer end of the limiting block 18 are respectively provided with a blocking groove 29, the inside of the blocking groove 29 is slidably connected with a blocking block 30, an elastic member 31 is connected between the blocking block 30 and the inner end of the blocking groove 29, and the outer end of one side of the blocking block 30 close to the limiting cavity 17 is respectively provided with an inclined surface 32; when the air bag stopping device works, when the limiting block 18 slides out of the limiting cavity 17, the blocking block 30 compressed in the blocking groove 29 can extend out to the outer end of the limiting block 18 under the action of the elastic piece 31, so that the limiting area of the limiting block 18 for expanding the side part of the air bag 8 is increased, so that the air bag 8 can expand longitudinally more effectively and drive the cushion body 1 to rise better, when the sliding plate 6 resets, the limiting block 18 can drive the plugging block 30 to contact and extrude with the extrusion surface 24, so that the blocking piece 30 is pressed into the blocking groove 29 at first, and then when the limiting block 18 is retracted into the limiting cavity 17 under the action of the pressing surface 24, at this time, the stopper 18 can drive the inclined surface 32 of the blocking block 30 to extrude with the outer port of the chute 14, thereby enabling the blocking block 30 to be smoothly compressed inside the blocking groove 29, and further enabling the slide 6 to be effectively restored and reused.

As an embodiment of the present invention, the outer end of the fixing groove 21 is provided with a funnel-shaped cavity 33 with an opening gradually increasing from inside to outside; the during operation, when the stopper 18 that is equipped with fixed block 20 takes place to rock under the effect of external force, dead lever 28 takes place the dislocation with fixed slot 21 easily this moment, this moment through the funnel shape chamber 33 that sets up, when fixed slot 21 takes place the dislocation with dead lever 28, dead lever 28 top can drive this stopper 18 through the lateral wall that extrudees funnel shape chamber 33 and move this moment, thereby make dead lever 28 can stabilize effectual slipping in the fixed slot 21 and block with it, the stability and the validity of dead lever 28 with fixed slot 21 when the cooperation have been improved.

An automatic turning over air cushion bed inflation method is suitable for the air cushion bed, and comprises the following steps:

s1: firstly, the air pump is used for inflating the cushion body 1, so that the cushion body 1 is expanded and a patient is supported;

s2: then, the air pump and the air flow valve are respectively used for inflating the air bags 8 corresponding to the shunt tubes 9, so that the amount of gas inflated by the air bags 8 is gradually increased from the air bags 8 in the middle to the air bags 8 on the side parts, the cushion body 1 lifted by the air bags 8 forms an arc-shaped slope, and the patient can turn over under the action of the inclined cushion body 1;

s3: then, the air pump and the air flow valve control inflated air bags 8 are deflated, and the air amount inside each air bag 8 is made to be the same, so that the cushion body 1 at the top ends of the air bags 8 is in a horizontal state again.

When the air pump is in operation, when the air pump fills air into the air bag 8 through the shunt pipe 9, the limiting plates 4 on the two sides of the air bag 8 can limit the expansion of the air bag 8 towards the two sides, so that the air bag 8 can expand and extend towards the top end more effectively, the cushion body 1 at the top is supported, meanwhile, the sliding plate 6 is attached to the bottom surface of the cushion body 1 under the action of the first spring 7, when the air bag 8 expands longitudinally, the sliding plate 6 moves towards the top of the sliding cavity 5 under the pressure of the first spring 7 along with the continuous rising of the bottom surface of the cushion body 1, so that the side part of the air bag 8 can be effectively limited under the action of the limiting plates 4 and the sliding plate 6, the air bag 8 can extend longitudinally better and drive the cushion body 1 to be supported efficiently; when the patient who will lie on filling up the body 1 when rolling over as needs, because each gasbag 8 of independent control of the inside air flow valve of shunt tubes 9 can expand, make gasbag 8 there is the difference in the gas that fills under the effect of air pump and air flow valve, thereby make the height of 8 vertical inflation of gasbag produce the step difference, and make the body 1 that fills up that gasbag 8 held up form curved slope, thereby can make the patient realize convenient standing up under the effect of the body 1 is filled up in the slope, not only labour saving and time saving, the secondary injury that causes the patient when also reducing simultaneously manually to the patient stands up, the result of use of air cushion bed has been improved greatly.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.