CN113475906A

CN113475906A - Paediatrics is with preventing playing by device

Info

Publication number: CN113475906A
Application number: CN202110566694.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shao Yuguo
Current assignee: Qingdao Women and Childrens Hospital
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-10-08
Anticipated expiration: 2041-05-24
Also published as: CN113475906B

Abstract

The invention relates to the technical field of medical instruments, in particular to a pediatric quilt kicking prevention device which comprises a base, wherein two rotating shafts which are correspondingly arranged are rotatably arranged on the upper surface of the base along the length direction of the base, a cross rod is fixedly arranged at the top ends of the two rotating shafts, one end of a pull rope is respectively fixed at two ends of each cross rod, pull rope guide mechanisms are fixedly arranged on the upper surface of the base at two sides of each rotating shaft, the pull rope guide mechanisms are arranged in a one-to-one correspondence manner with the pull ropes, a quilt fixer is fixedly arranged after one end of each pull rope passes through the corresponding pull rope guide mechanism, and a limiting mechanism corresponding to one end of each cross rod is arranged on one side of each cross rod. The quilt can prevent the quilt from being kicked off, and can accelerate the discharge of hot air in the quilt, so that children can sleep with high quality.

Description

Paediatrics is with preventing playing by device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a pediatric quilt kicking prevention device.

Background

In the paediatrics of hospital, some children are in the process of having a rest at night, the condition that kicks off the quilt can take place, and some children that are weak in constitution are consequently easy to catch cold, harm healthy, and for some children that are in the treatment process, undoubtedly add very big trouble to normal treatment process. The main reason why the children kick the quilt is generally that the body of the children feels that the temperature in the quilt is too high and feels hot, so that the quilt is not automatically supported by legs and feet, a gap is reserved between the quilt and the bed body, hot air in the quilt can leak out, the interior of the quilt is cooled, the people feel comfortable, and after the temperature is reduced, the legs and feet can be retracted, so that the quilt is attached to the bed body again; however, the children are often in a sleeping state, and the strength of the legs and the feet of the children is difficult to control at the moment, so that the quilt is kicked away directly, and the phenomenon of kicking the quilt occurs. And present prevent playing by device most utilizes fixing device to fix the quilt on the bed body for children are difficult to kick the quilt, though avoided children to kick the quilt like this, but feel hot at children, when propping up the quilt, the gap between the quilt and the bed body is very little, leads to the hot-air in the quilt to be difficult to in time leak, and the temperature in the quilt is still higher, makes children very uncomfortable, is difficult to obtain high-quality sleep.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the existing kicking-proof quilt device makes a child difficult to support a quilt, so that hot air in a quilt can not be discharged in time, the temperature in the quilt is high, and the child is difficult to move to sleep with high quality, and provides the kicking-proof quilt device for the pediatrics.

In order to achieve the purpose, the invention adopts the following technical scheme:

the design is with preventing playing by device for paediatrics, the on-line screen storage device comprises a base, the base upper surface is followed its rotatable two pivots of installing the correspondence setting of its length direction, two the equal fixed mounting in pivot top has a horizontal pole, every the horizontal pole both ends are fixed with the one end of a stay cord respectively, every the equal fixed mounting in base upper surface of pivot both sides has a stay cord guiding mechanism, just stay cord guiding mechanism sets up with the stay cord one-to-one, every the one end of stay cord all passes behind the stay cord guiding mechanism that corresponds fixed mounting has a quilt fixer, every horizontal pole one side all is provided with the stop gear who corresponds with it.

Preferably, stay cord guiding mechanism includes first diaphragm, first stand pipe, inserts the post, first a section of thick bamboo, threaded rod, second diaphragm, second stand pipe of inserting, run through on the first diaphragm and set up and be fixed with the stand pipe, fixed surface installs a plurality of and inserts the post under the first diaphragm, every it all overlaps to establish and is fixed with a first section of thick bamboo to insert the post bottom, the equal fixed connection of first section of thick bamboo is on the base, still run through on the first diaphragm and be provided with a plurality of threaded rod that are parallel to each other, equal threaded mounting has a nut on the threaded rod of first diaphragm both sides, fixed mounting has the second diaphragm between the threaded rod top, the second diaphragm upper surface runs through to set up and is fixed with the second stand pipe, second stand pipe and the coaxial setting of first stand pipe, the second stand pipe top all sets up towards base lateral buckling 90 degrees, and the correspondence one end of stay cord is from down to up passing first stand pipe in proper order, A quilt fixer is fixedly connected behind the second guide tube.

Preferably, the limiting mechanism comprises a supporting plate, a fixing plate, guide rods, baffles, springs, rubber heads and sliding chutes, wherein two baffles are arranged on one side of each transverse rod and are in contact with the transverse rod, the outer side surface of each baffle is fixedly connected with one guide rod, the guide rod is sleeved with one fixing plate, the spring is sleeved on the guide rod between each baffle and the fixing plate, the supporting plate is arranged below the baffle, the sliding chute parallel to the guide rods is formed in the supporting plate, a sliding block is arranged in the sliding chute, the sliding block is fixedly connected with the adjacent baffle, the bottom end of the fixing plate is fixedly connected to the supporting plate, the rubber head is fixedly arranged at the tail end of one side, extending out of the fixing plate, of each guide rod, and the height of the top end of each fixing plate is smaller than or equal to the height of the top end of the corresponding baffle;

every all run through on the layer board and be provided with a montant, the equal fixed connection in montant bottom is on the base, equal fixed mounting has a stopper on the montant of layer board top, two fixed mounting has the connecting plate between the layer board, be provided with the climbing mechanism corresponding with it under the connecting plate.

Preferably, climbing mechanism includes cam, drive shaft, riser, crank, spacing bolt, every under the connecting plate all be provided with a cam that contacts with it, fixed mounting has a drive shaft on the cam, the rotatable a plurality of riser of installing in the drive shaft, the equal fixed connection of riser is on the base, fixed mounting has the crank on one side end of drive shaft, the screw thread runs through on the crank and is provided with a spacing bolt, and is adjacent set up the corresponding jack of a plurality of and spacing bolt movement track on the riser, spacing bolt inserts after passing the crank in the jack that corresponds.

Preferably, a corresponding time delay power-off switch is fixedly mounted on the supporting plate outside each rubber head, and a key corresponding to the rubber head is arranged on each time delay power-off switch, so that the rubber head can press the key on the adjacent time delay power-off switch;

two electric fan modules are fixedly installed on two sides of the upper surface of the base between the rotating shafts respectively, the two electric fan modules are arranged in a staggered mode, the two electric fan modules are electrically connected to the same power supply module, and the four time-delay power-off switches are connected to a power circuit of the power supply module in parallel.

The pediatric quilt kicking prevention device has the advantages that: by arranging the rotating shaft, the cross rod, the pull rope, the limiting mechanism and the like, when a child supports the quilt, the cross rod tends to deflect due to the fact that the quilt can pull the cross rod through the pull rope, at the moment, the baffle plate on the limiting mechanism can stretch out and draw back, the cross rod can deflect in a small range, at the moment, the quilt can enable a small gap to be reserved between the quilt and a bed body due to looseness of the pull rope, accordingly, hot air in the quilt can be conveniently discharged, the temperature in the quilt is reduced, the child feels comfortable, and the quilt is beneficial to keeping high-quality sleep of the child; by arranging the time delay power-off switch, the electric fan module and the like, when a child supports a quilt, the electric fan module can be powered on for a period of time by correspondingly turning on the time delay switch, so that the hot air in the quilt can be discharged with higher speed by utilizing the wind blown out by the electric fan module, and the quilt can be cooled more quickly.

Drawings

Fig. 1 is a schematic structural view of a pediatric anti-kicking device provided by the invention;

fig. 2 is a schematic top view of a pediatric anti-kicking device according to the present invention;

FIG. 3 is a partial schematic structural view of a pediatric anti-kicking device according to the present invention;

FIG. 4 is a schematic structural view of a pull rope guide mechanism of a pediatric anti-kicking device according to the present invention;

fig. 5 is a first schematic structural diagram of a limiting mechanism of a pediatric anti-kicking device provided by the invention;

fig. 6 is a schematic structural view of a second limiting mechanism of the pediatric anti-kicking device provided by the invention;

FIG. 7 is a schematic view of an installation of a pediatric anti-kicking device according to the present invention;

fig. 8 is a system schematic diagram of a pediatric anti-kicking device according to the present invention.

In the figure: the electric fan comprises a base 1, a rotating shaft 2, a cross rod 3, a pull rope 4, a first transverse plate 5, a first guide tube 6, an inserting column 7, a first inserting barrel 8, a threaded rod 9, a second transverse plate 10, a second guide tube 11, a quilt fixer 12, a supporting plate 13, a fixing plate 14, a guide rod 15, a baffle 16, a spring 17, a rubber head 18, a sliding groove 19, a time-delay power-off switch 21, a key 22, a vertical rod 23, a connecting plate 24, a cam 25, a driving shaft 26, a vertical plate 27, a crank 28, a limiting bolt 29, a second inserting barrel 30, a telescopic rod 31, an electric fan 32, a bed body 33 and a quilt 34.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-8, a pediatric anti-kicking quilt device comprises a base 1, two rotating shafts 2 which are correspondingly arranged are rotatably arranged on the upper surface of the base 1 along the length direction of the base, a cross rod 3 is fixedly arranged on the top ends of the two rotating shafts 2, one end of a pull rope 4 is fixed at each end of each cross rod 3, a pull rope guide mechanism is fixedly arranged on the upper surface of the base 1 on two sides of each rotating shaft 2, the pull rope guide mechanisms and the pull ropes 4 are arranged in a one-to-one correspondence manner, a quilt fixer is fixedly arranged after one end of each pull rope 4 penetrates through the corresponding pull rope guide mechanism, and a limiting mechanism corresponding to each cross rod is arranged on one side of each cross rod 3.

The pull rope guide mechanism comprises a first transverse plate 5, a first guide pipe 6, inserting columns 7, a first inserting cylinder 8, threaded rods 9, a second transverse plate 10 and a second guide pipe 11, the guide pipe 6 is arranged and fixed on the first transverse plate 5 in a penetrating manner, a plurality of inserting columns 7 are fixedly arranged on the lower surface of the first transverse plate 5, a first inserting cylinder 8 is sleeved and fixed at the bottom end of each inserting column 7, the first inserting cylinders 8 are fixedly connected on the base 1, a plurality of threaded rods 9 which are mutually parallel are also arranged on the first transverse plate 5 in a penetrating manner, a nut is arranged on each threaded rod 9 on two sides of the first transverse plate 5 in a threaded manner, the second transverse plate 10 is fixedly arranged between the top ends of the threaded rods 9, the second guide pipe 11 is arranged and fixed on the upper surface of the second transverse plate 10 in a penetrating manner, the second guide pipe 11 is coaxial with the first guide pipe 6, the top end of the second guide pipe 11 is arranged towards the base 1 in a lateral bending manner by 90 degrees, one end of the corresponding pull rope 4 sequentially passes through the first guide pipe 6 and the second guide pipe 11 from bottom to top and then is fixedly connected with a quilt fixer 12. In the actual use process, the top end of the second guide tube 11 in the pull rope guide mechanism and the quilt body 34 are arranged on the same horizontal plane, and the height of the second guide tube 11 can be adjusted by adjusting the threaded rod 9; the quilt fixer 12 mainly comprises fixing buckles and fixing nails, wherein the fixing buckles are fixedly connected on the pull ropes 4, and when the quilt is fixed, the fixing nails penetrate through the quilt body and then are inserted into the fixing buckles.

The limiting mechanism comprises a supporting plate 13, a fixing plate 14, guide rods 15, baffle plates 16, springs 17, rubber heads 18 and sliding grooves 19, wherein two baffle plates 16 which are contacted with each other are arranged on one side of each cross rod 3, the outer side surface of each baffle plate 16 is fixedly connected with one guide rod 15, one fixing plate 14 is sleeved on each guide rod 15, one spring 17 is sleeved on each guide rod 15 between each baffle plate 16 and the fixing plate 14, a supporting plate 13 is arranged below each baffle plate 16, each supporting plate 13 is provided with one sliding groove 19 which is parallel to the corresponding guide rod 15, each sliding groove 19 is internally provided with one sliding block, each sliding block is fixedly connected with the corresponding adjacent baffle plate 16, the bottom end of each fixing plate 14 is fixedly connected onto the corresponding supporting plate 13, the rubber head 18 is fixedly arranged at the tail end of one side, extending out of each fixing plate 14, of each guide rod 15, and the height of the top end of each fixing plate 14 is less than or equal to the height of the top end of each baffle plate 16; the height of the top ends of the skirt 16 and the fixed plate 14 is set so that no other obstacles block the deflection of the crossbar 3 when the skirt 16 is lowered.

All run through on every layer board 13 and be provided with a montant 23, the equal fixed connection in montant 23 bottom is on base 1, and equal fixed mounting has a stopper on the montant 23 of layer board 13 top, and fixed mounting has connecting plate 24 between two layer boards 13, is provided with the climbing mechanism corresponding with it under the connecting plate 24. Climbing mechanism includes cam 25, drive shaft 26, riser 27, crank 28, stop bolt 29, all be provided with a cam 25 that contacts with it under every connecting plate 24, fixed mounting has a drive shaft 26 on the cam 25, rotatable mounting has a plurality of riser 27 on the drive shaft 26, the equal fixed connection of riser 27 is on base 1, fixed mounting has crank 28 on one side end of drive shaft 26, the screw thread runs through on the crank 28 and is provided with a stop bolt 29, set up the corresponding jack of a plurality of and stop bolt 29 motion trail on the adjacent riser 27, stop bolt 29 passes and inserts in the jack that corresponds behind the crank 28. The main effect of climbing mechanism is in order to realize the lift control to connecting plate 24 to realize the lift control to two push pedal 13 through connecting plate 24, so that baffle 16 that sets up on layer board 13 can realize the limiting displacement to horizontal pole 3 when connecting plate 24 rises, when connecting plate 24 descends, loses the limiting displacement to horizontal pole 3.

When the quilt is used, an operator fixedly installs the device on the bed body, when a child props up the quilt, the quilt can pull the cross rod 3 through the pull rope 4, the cross rod 3 tends to deflect, at the moment, the baffle plate 16 on the limiting mechanism can stretch and retract, the cross rod 3 can deflect in a small range, at the moment, the quilt can loose through the pull rope 4, a small gap is reserved between the quilt and the bed body, hot air in a quilt nest can be conveniently discharged, the temperature in the quilt nest is reduced, the child feels comfortable, and when the child lays the legs and feet, under the reset action of the spring 17, the push plate 16 can push the cross rod 3 to reset, so that the cross rod 3 is kept in a state of being parallel to the length direction of the base 1.

Example 2

Referring to fig. 1-8, as another preferred embodiment of the present invention, the difference from embodiment 1 is that a corresponding time-delay cut-off switch 21 is fixedly installed on the supporting plate 13 outside each rubber head 18, and a key 22 corresponding to the rubber head 18 is arranged on each time-delay cut-off switch 21, so that the rubber head 18 can press the key 22 on the adjacent time-delay cut-off switch 21; the time delay power-off switch 21 can be freely set for an extended time, when the key 22 is pressed, the time delay power-off switch 21 is turned on, and then is turned off after being kept in the on state for a period of time, and the key 22 is automatically reset.

Two electric fan modules are fixedly mounted on two sides of the upper surface of the base 1 between the two rotating shafts 2 respectively, the two electric fan modules are arranged in a staggered mode, the two electric fan modules are electrically connected to the same power supply module, and the four time-delay power-off switches 12 are connected to a power circuit of the power supply module in parallel. The electric fan module comprises a second inserting cylinder 30, an expansion link 31 and an electric fan 32, wherein the electric fan 32 is fixedly installed at the top end of the expansion link 31, the second inserting cylinder 30 is inserted and fixed at the bottom end of the expansion link 31, and the second inserting cylinders 30 are fixedly connected to the base 1. The height of the electric fan 32 can be adjusted by the telescopic rod 31. The four time-delay power-off switches 12 are used as four branch switches, and any one time-delay power-off switch 12 is switched on, so that the power supply module can supply power to the two electric fan modules for a period of time until the time-delay power-off switch 12 is reset. The two electric fan modules are arranged in a staggered mode, and the situation that blown wind offsets with each other can be avoided.

Through setting up time delay power-off switch 21, when children drag the quilt and make horizontal pole 3 take place to deflect, horizontal pole 3 extrudes a baffle 16 in the stop gear for it promotes rubber head 18 on the guide arm 15 and presses button 22, thereby switch-on time delay power-off switch 21, make electric fan module work with it electric connection, thereby utilize the wind that electric fan module blown out, accelerate the discharge of the air in the quilt, make can rapid cooling in the quilt nest, thereby make children can feel comfortable.

The specific operation flow of the invention is as follows:

s1, an operator fixedly installs the base 1 of the device under a bed body 33, then installs a pull rope guide mechanism, pull ropes 4, a limiting mechanism, fan modules and the like, and then fixes the quilt fixer 12 at the tail end of each pull rope 4 on a quilt 34, wherein four quilt fixers 12 are distributed on the quilt body in a rectangular shape, and two fan modules are respectively arranged at two sides of the bed body 33;

s2, when a child needs to be placed on the bed body 33, an operator releases the limiting bolt 29 on the crank 28, then rotates the driving shaft 26, so that the driving shaft 26 drives the cam 25 to rotate until the cam 25 does not jack up the connecting plate 24, at the moment, the connecting plate 24 drives the two supporting plates 13 fixedly connected with the connecting plate to move downwards until the supporting plates 13 drive the baffles 16 arranged on the supporting plates to move to the positions below the cross rods 3, at the moment, the baffles 16 lose the limiting effect on the cross rods 3, so that the operator can rotate the cross rods 3 to enable the cross rods 3 to be arranged in parallel to the width direction of the base 1, the pull ropes 4 fixedly connected with the cross rods 3 are in a loose state, the quilt body is not pulled tightly by the pull ropes 4, and then the operator can place the child into the quilt body;

s3, rotating the two cross bars 3 by an operator to be arranged in parallel to the length direction of the base 1, wherein the cross bars 3 tighten the pull ropes 4, so that the quilt 34 is tightened; then the driving shaft 26 is rotated again, so that the cam 25 jacks up the connecting plate 24 again, and then the crank 28 is fixed by using the limiting bolt 29, so that the baffle 16 in each limiting mechanism can limit the transverse rod 3 again;

s4, when a child sleeps in the quilt, when the child feels that the temperature of the quilt is high, the child can use the legs to support the quilt 34, the quilt 34 can pull the quilt fixer 12 fixedly connected with the quilt out, the quilt fixer 12 can pull the pull rope 4 fixedly connected with the quilt out, the pull rope 4 can pull the cross rod 3 fixedly connected with the pull rope to deflect to the side, at the same time, the cross rod 3 can press one baffle plate 16 in the adjacent limiting mechanism, the baffle plate 16 pushes the guide rod 15 to move inwards, simultaneously, the spring 17 is pressurized until the rubber head 18 connected with the tail end of the guide rod 15 presses the key 22 on the adjacent time-delay power-off switch 21, at the moment, the time-delay power-off switch 21 continuously energizes the electrically connected power supply module for a period of time, the power supply module energizes the two electric fan modules to blow air to the gap between the quilt 34 and the bed body 33 by the electric fan modules, thereby accelerating the discharge of hot air in the quilt, realize the cooling to let children feel comfortable, children feel comfortable back, can put down the legs and feet, the gap between quilt 34 and the bed body 33 reduces, and quilt 34 is not drawing to drag stay cord 4, and horizontal pole 3 automatic re-setting, baffle 16 also automatic re-setting under spring 17's effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a paediatrics is with preventing playing by device, includes base (1), its characterized in that, base (1) upper surface is followed two pivot (2) that its length direction rotatable installation set up correspondingly, two the equal fixed mounting in pivot (2) top has a horizontal pole (3), every horizontal pole (3) both ends are fixed with the one end of a stay cord (4) respectively, every the equal fixed mounting in base (1) upper surface of pivot (2) both sides has a stay cord guiding mechanism, just stay cord guiding mechanism sets up with stay cord (4) one-to-one, every the one end of stay cord (4) all passes stay cord guiding mechanism rear fixed mounting who corresponds has quilt fixer (12), every horizontal pole (3) one side all is provided with the stop gear who corresponds with it.

2. The pediatric quilt kicking preventing device according to claim 1, wherein the pull rope guiding mechanism comprises a first transverse plate (5), a first guiding tube (6), inserting columns (7), a first inserting cylinder (8), a threaded rod (9), a second transverse plate (10) and a second guiding tube (11), the guiding tube (6) is arranged and fixed on the first transverse plate (5) in a penetrating manner, a plurality of inserting columns (7) are fixedly arranged on the lower surface of the first transverse plate (5), the first inserting cylinder (8) is sleeved and fixed at the bottom end of each inserting column (7), the first inserting cylinders (8) are fixedly connected on the base (1), a plurality of mutually parallel threaded rods (9) are arranged on the first transverse plate (5) in a penetrating manner, a nut is arranged on each threaded rod (9) on two sides of the first transverse plate (5), the second transverse plate (10) is fixedly arranged between the top ends of the threaded rods (9), the upper surface of the second transverse plate (10) penetrates through and is fixed with a second guide pipe (11), the second guide pipe (11) and the first guide pipe (6) are coaxially arranged, the top end of the second guide pipe (11) is arranged towards the base (1) in a side bending mode by 90 degrees, and one end of the pull rope (4) sequentially penetrates through the first guide pipe (6) and a quilt fixer (12) from bottom to top and is fixedly connected with the back of the second guide pipe (11).

3. The pediatric quilt kicking prevention device according to claim 1, wherein the limiting mechanism comprises a supporting plate (13), a fixing plate (14), a guide rod (15), a baffle (16), a spring (17), a rubber head (18) and a sliding groove (19), two baffles (16) in contact with the limiting mechanism are arranged on one side of each transverse rod (3), the outer side surface of each baffle (16) is fixedly connected with one guide rod (15), the fixing plate (14) is sleeved on the guide rod (15), the spring (17) is sleeved on the guide rod (15) between the baffle (16) and the fixing plate (14), the supporting plate (13) is arranged below the baffle (16), the sliding groove (19) parallel to the guide rod (15) is formed in the supporting plate (13), and a sliding block is installed in the sliding groove (19), the sliding block is fixedly connected with the adjacent baffle (16), the bottom end of the fixing plate (14) is fixedly connected to the supporting plate (13), the tail end of one side, extending out of the fixing plate (14), of the guide rod (15) is fixedly provided with a rubber head (18), and the height of the top end of the fixing plate (14) is smaller than or equal to that of the top end of the baffle (16);

every all run through on layer board (13) and be provided with a montant (23), the equal fixed connection in montant (23) bottom is on base (1), equal fixed mounting has a stopper on montant (23) of layer board (13) top, two fixed mounting has connecting plate (24) between layer board (13), be provided with corresponding climbing mechanism with it under connecting plate (24).

4. The pediatric anti-kicking device according to claim 3, wherein the jacking mechanism comprises a cam (25), a driving shaft (26), a vertical plate (27), a crank (28) and a limit bolt (29), the cam (25) is arranged under each connecting plate (24) and is in contact with the connecting plate, a driving shaft (26) is fixedly arranged on the cam (25), a plurality of vertical plates (27) are rotatably arranged on the driving shaft (26), the vertical plates (27) are fixedly connected to the base (1), the tail end of one side of the driving shaft (26) is fixedly provided with a crank (28), a limit bolt (29) is arranged on the crank (28) in a penetrating way through the thread, a plurality of jacks corresponding to the motion trail of the limit bolt (29) are arranged on the adjacent vertical plates (27), and the limiting bolt (29) penetrates through the crank (28) and then is inserted into the corresponding insertion hole.

5. The pediatric anti-kicking device as claimed in claim 3, wherein a corresponding time-delay power-off switch (21) is fixedly mounted on the supporting plate (13) outside each rubber head (18), and a button (22) corresponding to the rubber head (18) is arranged on each time-delay power-off switch (21) so that the rubber head (18) can press the button (22) on the adjacent time-delay power-off switch (21);

two electric fan modules are fixedly installed on two sides of the upper surface of the base (1) between the two rotating shafts (2) respectively, the two electric fan modules are arranged in a staggered mode, the two electric fan modules are electrically connected to the same power supply module, and the four time-delay power-off switches (12) are connected to a power circuit of the power supply module in parallel.