阅读说明：本技术 一种具有防水功能的薄膜开关 (Membrane switch with waterproof function ) 是由 冷国徽 孙荣 曾庆双 冷志强 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种具有防水功能的薄膜开关,包括外壳和开关本体,所述外壳上设有对开关本体进行通风防水的防水机构,所述防水机构包括开设在外壳两侧侧壁的多个第一通孔,所述外壳两侧内壁均开设有两个滑槽,所述滑槽内壁滑动连接有滑块,所述滑块侧壁固定连接有竖板,所述竖板侧壁与外壳内壁紧密贴合,所述竖板侧壁均布开设有多个与第一通孔匹配的第二通孔,所述竖板上端通过多个橡胶筒与外壳顶部连接,所述橡胶筒内壁固定连接有导电弹簧。本发明通过设置防水机构,可以在户外湿度较低时对开关本体处进行散热,在户外湿度较高时对外壳进行封闭,避免外界湿度较高的空气进入外壳内,导致开关本体上有水渗入,从而影响其正常使用。(The invention discloses a membrane switch with a waterproof function, which comprises a shell and a switch body, wherein a waterproof mechanism for ventilating and waterproofing the switch body is arranged on the shell, the waterproof mechanism comprises a plurality of first through holes formed in the side walls of the two sides of the shell, two sliding grooves are formed in the inner walls of the two sides of the shell, sliding blocks are connected to the inner walls of the sliding grooves in a sliding mode, a vertical plate is fixedly connected to the side wall of each sliding block, the side wall of each vertical plate is tightly attached to the inner wall of the shell, a plurality of second through holes matched with the first through holes are uniformly distributed in the side wall of each vertical plate, the upper end of each vertical plate is connected with the top of the shell through a plurality of rubber cylinders, and conductive springs are fixedly connected to the inner wall of each rubber cylinder. According to the invention, the waterproof mechanism is arranged, so that heat can be radiated to the switch body when outdoor humidity is low, the shell is sealed when outdoor humidity is high, and the phenomenon that water permeates into the switch body due to the fact that air with high external humidity enters the shell is avoided, and normal use of the switch body is influenced.)

1. The utility model provides a membrane switch with waterproof function, includes shell (1) and switch body (2), its characterized in that, be equipped with on shell (1) and carry out waterproof waterproofing's waterproofing mechanism (3) ventilates to switch body (2), waterproofing mechanism (3) are including seting up a plurality of first through-holes (301) at shell (1) both sides lateral wall, two spout (302) have all been seted up to shell (1) both sides inner wall, spout (302) inner wall sliding connection has slider (303), slider (303) lateral wall fixedly connected with riser (304), riser (304) lateral wall and shell (1) inner wall closely laminate, riser (304) lateral wall equipartition is seted up a plurality of second through-holes (305) that match with first through-hole (301), riser (304) upper end is connected with shell (1) top through a plurality of rubber section of thick bamboo (306), rubber section of thick bamboo (306) inner wall fixedly connected with conductive spring (307), the humidity sensor (308) is embedded in the side walls of the two sides of the shell (1), the temperature sensor (309) is installed at the top of the shell (1), and the conductive spring (307), the humidity sensor (308), the temperature sensor (309) and an external power supply are connected in series.

2. The membrane switch with the waterproof function according to claim 1, wherein a dehumidifying mechanism (5) for dehumidifying air entering the housing (1) is arranged on the vertical plate (304), the dehumidifying mechanism (5) comprises a fixing frame (501) fixedly connected to the vertical plate (304) and far away from the side wall of the housing (1), a moisture absorption bag (502) is fixedly connected to the inner wall of the fixing frame (501), the inner wall of the fixing frame (501) is communicated with the inside of the housing (1) through a plurality of air inlet pipes (503), and the inner wall of the fixing frame (501) is communicated with the outside of the housing (1) through a plurality of air outlet pipes (504).

3. The membrane switch with the waterproof function according to claim 2, wherein a drying mechanism (6) for drying the moisture absorption bag (502) is arranged on the fixing frame (501), the drying mechanism (6) comprises two heating plates (601) embedded with the inner wall of the fixing frame (501), the inner wall of the fixing frame (501) is elastically connected with a push plate (603) through a plurality of first springs (602), an L-shaped groove (604) is formed in the inner wall of the fixing frame (501), two conductive plates (605) are symmetrically embedded in the inner wall of the L-shaped groove (604), a conductive block (606) is slidably connected with the inner wall of the L-shaped groove (604), a first wedge-shaped plate (607) is fixedly connected with the lower end of the conductive block (606) through a fixing rod, a second wedge-shaped plate (608) matched with the first wedge-shaped plate (607) is fixedly connected with the side wall of the push plate (603), the conductive block (606), the conductive plate (605) and the heating plate (601) are connected in series with an external power supply.

4. The membrane switch with waterproof function according to claim 3, wherein a first solenoid valve (609) is installed in the air inlet pipe (503), a second solenoid valve (610) is installed in the air outlet pipe (504), and the first solenoid valve (609), the second solenoid valve (610) and the heating plate (601) are connected in series.

5. The membrane switch with the waterproof function according to claim 1, wherein a fixing mechanism (7) for fixing the switch body (2) is arranged on the housing (1), the fixing mechanism (7) comprises a groove (701) formed in the bottom of the housing (1), two sliding plates (702) are slidably connected to the inner wall of the groove (701), the side walls of the two sliding plates (702) are elastically connected to the inner wall of the groove (701) through second springs (703), and an L-shaped plate (704) is fixedly connected to the upper end of each sliding plate (702).

6. The membrane switch with the waterproof function according to claim 5, wherein a pressing mechanism (8) for pressing the switch body (2) is arranged on the housing (1), the pressing mechanism (8) comprises an air bag (801) fixedly connected with the top of the housing (1), a pressing plate (802) is fixedly connected with the lower end of the air bag (801), an annular frame (803) is fixedly connected with the inner wall of the groove (701), two transverse plates (804) are connected with the inner wall of the annular frame (803) in a sealing and sliding manner, one ends of the two transverse plates (804) far away from each other are respectively fixedly connected with the side walls of the corresponding sliding plates (702), and the inner wall of the annular frame (803) is communicated with the inner wall of the air bag (801) through a connecting pipe (805).

7. The membrane switch with the waterproof function according to claim 2, wherein a cooling mechanism (9) for assisting in cooling the interior of the switch body (2) is arranged on the housing (1), the cooling mechanism (9) comprises a strip-shaped cavity (901) formed in the top of the housing (1), a magnetic plate (903) is connected to the inner wall of the strip-shaped cavity (901) in a sealing and sliding manner, a return pipe (902) is fixedly connected to the inner wall of the housing (1), two ends of the return pipe (902) are respectively communicated with the inner walls of the strip-shaped cavity (901) located on two sides of the magnetic plate (903), an electromagnetic plate (904) attracted to the magnetic plate (903) is embedded in the inner wall of the strip-shaped cavity (901), and the electromagnetic plate (904) and the temperature sensor (309) are connected with an external alternating current power supply in series.

8. The membrane switch with waterproof function according to claim 7, wherein silica gel particles are arranged in the moisture absorption bag (502), and a cooling liquid is arranged in the bar-shaped cavity (901).

Technical Field

The invention relates to the technical field of membrane switches, in particular to a membrane switch with a waterproof function.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel.

In the patent of application number "202022073022.4" an it is outdoor with membrane switch that has waterproof function ", this scheme mainly carries out the suit through setting up the waterproof layer and moulds hotly, carries out seamless parcel to the circuit, seals up the reinforcement to membrane switch simultaneously, prevents that button and pad pasting layer etc. from droing, avoids inside conducting medium gets into the substrate layer such as water droplet, but this scheme still has certain defect:

1. the waterproof layer is arranged outside the membrane switch and is sealed and reinforced, so that the membrane switch has certain waterproof capability and the heat dissipation capability of the membrane switch is reduced, the internal temperature of the membrane switch is higher after the membrane switch works for a long time, and the service life of the membrane switch is reduced;

2. because outdoor conditions are complicated, when the membrane switch works outdoors for a long time, the protective sealing structure on the surface of the membrane switch can be damaged to a certain extent, and then the membrane switch is exposed to the outside, so that the waterproof function of the membrane switch is reduced.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a membrane switch with a waterproof function.

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

a membrane switch with waterproof function comprises a shell and a switch body, wherein the shell is provided with a waterproof mechanism for ventilating and waterproofing the switch body, the waterproof mechanism comprises a plurality of first through holes arranged on the side walls of the two sides of the shell, two sliding grooves are arranged on the inner walls of the two sides of the shell, the inner wall of the sliding chute is connected with a sliding block in a sliding way, the side wall of the sliding block is fixedly connected with a vertical plate, the side wall of the vertical plate is tightly attached to the inner wall of the shell, a plurality of second through holes matched with the first through holes are uniformly distributed on the side wall of the vertical plate, the upper end of the vertical plate is connected with the top of the shell through a plurality of rubber cylinders, the inner wall of the rubber cylinder is fixedly connected with a conductive spring, the side walls of the two sides of the shell are embedded with humidity sensors, a temperature sensor is installed at the top of the shell, and the conductive spring, the humidity sensor and the temperature sensor are connected with an external power supply in series.

Further, be equipped with the dehumidification mechanism that dehumidifies the air that gets into in the shell on the riser, dehumidification mechanism includes that fixed connection keeps away from the fixed frame of external lateral wall at the riser, fixed frame inner wall fixedly connected with moisture absorption package, intercommunication in fixed frame inner wall through a plurality of intake pipes and the shell, fixed frame inner wall communicates through outside a plurality of blast pipes and the shell.

Further, be equipped with the stoving mechanism of drying to the moisture absorption package on the fixed frame, stoving mechanism is including inlaying two hot plates that are equipped with fixed frame inner wall, fixed frame inner wall has the push pedal through a plurality of first spring elastic connection, L type groove has been seted up to fixed frame inner wall, L type inslot wall symmetry inlays and is equipped with two current conducting plates, L type inslot wall sliding connection has the conducting block, the conducting block lower extreme passes through the first wedge of dead lever fixedly connected with, push pedal lateral wall fixedly connected with and first wedge complex second wedge, conducting block, current conducting plate, hot plate and external power supply series connection.

Further, install first solenoid valve in the inlet duct, install the second solenoid valve in the blast pipe, first solenoid valve, second solenoid valve and hot plate series connection.

Further, be equipped with the fixed establishment who fixes the switch body on the shell, fixed establishment is including the recess of seting up the shell bottom, recess inner wall sliding connection has two slides, two the slide lateral wall passes through second spring and recess inner wall elastic connection, slide upper end fixedly connected with L template.

Further, be equipped with the pressing mechanism who presses down the switch body on the shell, pressing mechanism includes the gasbag at fixedly connected with shell top, gasbag lower extreme fixedly connected with clamp plate, recess inner wall fixedly connected with annular frame, the sealed sliding connection of annular frame inner wall has two diaphragms, two the one end that the diaphragm was kept away from each other is rather than the slide lateral wall fixed connection who corresponds respectively, the annular frame inner wall passes through connecting pipe and gasbag inner wall intercommunication.

Further, be equipped with the cooling mechanism that assists the cooling to this internal cooling of carrying on of switch on the shell, cooling mechanism is including the bar chamber of seting up the shell top, the sealed sliding connection of bar chamber inner wall has the magnetic sheet, shell inner wall fixedly connected with back flow, the back flow both ends are the inner wall intercommunication that the bar chamber is located the magnetic sheet both sides respectively, bar intracavity wall inlays and is equipped with the electromagnetic plate of inhaling mutually with the magnetic sheet, electromagnetic plate, temperature sensor and external alternating current power supply series connection.

Furthermore, the moisture absorption bag is internally provided with silica gel particles, and the strip-shaped cavity is internally provided with cooling liquid.

The invention has the following advantages:

1: through setting up waterproof mechanism, can dispel the heat to switch body department when outdoor humidity is lower, seal the shell when outdoor humidity is higher, avoid in the higher air admission shell of external humidity, lead to having the water infiltration on the switch body to influence its normal use.

2: through setting up dehumidification mechanism and stoving mechanism, the silica gel granule in the moisture absorption package can absorb the moisture in the air for the air keeps dry, thereby increases the water-proof effects of switch body, and can dry it by oneself after absorbing more moisture in the silica gel granule, makes the silica gel granule can used repeatedly, need not the manual work and carries out periodic replacement.

3: through setting up cooling mechanism, can accelerate the cooling to in the shell to when the great first through-hole of outdoor humidity seals, the coolant liquid can also absorb the heat in the shell this moment, thereby guarantees the cooling effect on the switch body.

Drawings

Fig. 1 is a schematic structural diagram of a membrane switch with a waterproof function according to the present invention;

fig. 2 is a schematic cross-sectional structural diagram of a membrane switch with a waterproof function according to the present invention;

fig. 3 is a schematic vertical sectional structural view of a membrane switch with a waterproof function according to the present invention;

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

fig. 5 is a schematic structural diagram of a dehumidifying mechanism and a drying mechanism in a membrane switch with a waterproof function according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 5;

fig. 7 is a schematic rear view of a membrane switch with waterproof function according to the present invention;

fig. 8 is a schematic structural diagram of a return pipe in a membrane switch with a waterproof function according to the present invention.

In the figure: the device comprises a shell 1, a switch body 2, a waterproof mechanism 3, a first through hole 301, a sliding groove 302, a sliding block 303, a vertical plate 304, a second through hole 305, a rubber tube 306, a conductive spring 307, a humidity sensor 308, a temperature sensor 309, a shell door 4, a dehumidifying mechanism 5, a fixing frame 501, a moisture absorption bag 502, an air inlet pipe 503, an air outlet pipe 504, a drying mechanism 6, a heating plate 601, a first spring 602, a push plate 603, a groove 604L type groove 605, a conductive plate 605, a conductive block 606, a first wedge plate 607, a second wedge plate 608, a first electromagnetic valve 609, a second electromagnetic valve 610, a fixing mechanism 7, a groove 701, a sliding plate 702, a second spring 703, a 704L type plate 8 pressing mechanism, an air bag 801, a pressing plate 802, an annular frame 803, a transverse plate 804, a connecting pipe 805, a cooling mechanism 9, a strip-shaped cavity 901, a return pipe, a magnetic plate 903 and an electromagnetic plate 904.

Detailed Description

Referring to fig. 1, 2 and 4, a membrane switch with waterproof function comprises a shell 1 and a switch body 2, a shell door 4 is installed on the side wall of the shell 1, a rubber pad is arranged on the side wall of the shell door 4 to increase the sealing performance of the shell 1 after the shell door 4 is closed, a waterproof mechanism 3 for ventilating and waterproofing the switch body 2 is arranged on the shell 1, the waterproof mechanism 3 comprises a plurality of first through holes 301 which are arranged on the side walls of two sides of the shell 1, two sliding grooves 302 are arranged on the inner walls of two sides of the shell 1, a sliding block 303 is connected on the inner wall of the sliding groove 302 in a sliding manner, a vertical plate 304 is fixedly connected on the side wall of the sliding block 303, the side wall of the vertical plate 304 is tightly attached to the inner wall of the shell 1, a plurality of second through holes 305 which are matched with the first through holes 301 are uniformly arranged on the side wall of the vertical plate 304, the upper end of the vertical plate 304 is connected with the top of the shell 1 through a plurality of rubber tubes 306, a conductive spring 307 is fixedly connected with the inner wall of the rubber tube 306, and can play an insulating effect on the conductive spring 307, current is prevented from escaping when the conductive spring 307 is electrified, humidity sensors 308 are embedded in the side walls of the two sides of the shell 1, a temperature sensor 309 is installed at the top of the shell 1, and the conductive spring 307, the humidity sensors 308 and the temperature sensor 309 are connected with an external power supply in series.

It should be noted that the humidity sensor 308 can sense the humidity change of the outdoor air, so as to control the on/off of the circuit on the conductive spring 307, that is, the circuit is off when the humidity of the outdoor air is high, the circuit is opened when the humidity of the outdoor air is low, the temperature sensor 309 can sense the temperature change in the housing 1, so as to control the on/off of the circuit on the conductive spring 307, that is, the circuit is opened when the temperature in the housing 1 is high, the circuit is off when the temperature in the housing 1 is low, and both are the prior art.

Further, when the outdoor air humidity is low and the temperature in the housing 1 is high, at this time, the circuits between the conductive spring 307, the humidity sensor 308, the temperature sensor 309 and the external power supply are conducted, and then the conductive spring 307 is electrified and contracted, so that the vertical plate 304 is driven to move upwards, the plurality of first through holes 301 and the plurality of second through holes 305 are in one-to-one correspondence, and then outdoor cold air can flow in the housing 1, so that the heat in the housing 1 is dissipated, and the switch body 2 is cooled;

when outdoor air humidity is higher, no matter how the temperature changes in the shell 1 this moment, conductive spring 307, humidity transducer 308, circuit disconnection between temperature sensor 309 and the external power supply, and then conductive spring 307 keeps the initial commentaries on classics attitude, also be exactly the riser 304 keeps the normal position, make a plurality of first through-holes 301 and a plurality of second through-hole 305 misplace each other, and then outdoor cold air can't flow in shell 1, avoid in the higher air admission shell 1 of external humidity, lead to there being the water infiltration on the switch body 2, thereby influence its normal use, then can seal first through-hole 301 by oneself when air humidity is great, thereby guarantee to waterproof switch body 2.

Referring to fig. 5, be equipped with on the riser 304 and carry out dehumidification 5 to the air that gets into in the shell 1, dehumidification 5 includes that fixed connection keeps away from the fixed frame 501 of shell 1 lateral wall at riser 304, and fixed frame 501 inner wall fixedly connected with moisture absorption package 502 is equipped with the silica gel granule in the moisture absorption package 502, and the intercommunication is passed through in a plurality of intake pipes 503 and the shell 1 to fixed frame 501 inner wall, and fixed frame 501 inner wall communicates outside through a plurality of blast pipes 504 and shell 1.

Further, when the external air flows in the housing 1 through the fixing frame 501 and the air inlet pipe 503, the moisture in the air can be absorbed by the silica gel particles in the moisture absorption bag 502, so that the air is kept dry, and the waterproof effect of the switch body 2 is further improved.

Further, the air inlet pipe 503 is respectively located at the top and the bottom of the two fixing frames 501, so that the air can flow from bottom to top or from top to bottom when flowing in the housing 1, and further, the heat in the housing 1 can be better taken out.

Referring to fig. 6, be equipped with on the fixed frame 501 and carry out the stoving mechanism 6 of drying to moisture absorption package 502, stoving mechanism 6 is including inlaying two hot plates 601 that are equipped with fixed frame 501 inner wall, fixed frame 501 inner wall has push pedal 603 through a plurality of first spring 602 elastic connection, L type groove 604 has been seted up to fixed frame 501 inner wall, L type groove 604 inner wall symmetry inlays and is equipped with two current conducting plates 605, L type groove 604 inner wall sliding connection has conducting block 606, the conducting block 606 lower extreme passes through the first wedge plate 607 of dead lever fixedly connected with, push pedal 603 lateral wall fixedly connected with and first wedge plate 607 complex second wedge plate 608, conducting block 606, current conducting plate 605, hot plate 601 and external power series connection.

Further, its volume increase of silica gel granule after the moisture absorption, and then when absorbing more moisture in the silica gel granule, moisture absorption package 502 volume increase this moment, thereby extrusion push pedal 603 is to the direction removal of being close to fixed frame 501 inner wall, and then second wedge 608 extrudees first wedge 607, make first wedge 607 slide on driving conducting block 606 through the dead lever, when slide and two conducting blocks 605 contacts on conducting block 606, conducting block 606 this moment, conducting plate 605, circuit between hot plate 601 and the external power switches on, and then hot plate 601 circular telegram generates heat, thereby dry the silica gel granule, make the silica gel granule can used repeatedly, need not the manual work and change regularly, thereby further assurance is to waterproof on the switch body 2.

Referring to fig. 5, a first solenoid valve 609 is installed in the intake pipe 503, a second solenoid valve 610 is installed in the exhaust pipe 504, and the first solenoid valve 609, the second solenoid valve 610 and the heating plate 601 are connected in series.

It should be noted that the first solenoid valve 609 is a normally open type solenoid valve, that is, when the first solenoid valve 609 is powered on, the first solenoid valve 609 is closed, when the first solenoid valve 609 is powered off, the first solenoid valve 609 is opened, the second solenoid valve 610 is a normally closed type solenoid valve, that is, when the second solenoid valve 610 is powered on, the second solenoid valve 610 is opened, and when the second solenoid valve 610 is powered off, the second solenoid valve 610 is closed.

Further, after the heating plate 601 is powered on, the first electromagnetic valve 609 and the second electromagnetic valve 610 are powered on, so that the first electromagnetic valve 609 is closed, the second electromagnetic valve 610 is opened, and steam heated by silica gel particles is discharged out of the shell 1 through the exhaust pipe 504, so that the steam is prevented from entering the shell 1 and water seepage on the switch body 2 is caused.

Referring to fig. 3, the fixing mechanism 7 for fixing the switch body 2 is arranged on the housing 1, the fixing mechanism 7 includes a groove 701 formed in the bottom of the housing 1, two sliding plates 702 are slidably connected to the inner wall of the groove 701, the side walls of the two sliding plates 702 are elastically connected to the inner wall of the groove 701 through a second spring 703, and an L-shaped plate 704 is fixedly connected to the upper end of each sliding plate 702.

Referring to fig. 2 and 3, a pressing mechanism 8 for pressing the switch body 2 is arranged on the housing 1, the pressing mechanism 8 includes an air bag 801 fixedly connected to the top of the housing 1, a pressing plate 802 is fixedly connected to the lower end of the air bag 801, an annular frame 803 is fixedly connected to the inner wall of the groove 701, two transverse plates 804 are slidably connected to the inner wall of the annular frame 803 in a sealing manner, one ends of the two transverse plates 804, which are away from each other, are fixedly connected to the side walls of the corresponding sliding plates 702 respectively, and the inner wall of the annular frame 803 is communicated with the inner wall of the air bag 801 through a connecting pipe 805.

Further, pull two L template 704 and keep away from each other, put switch body 2 between two L template 704 afterwards, and then two L template 704 can press from both sides tight switch body 2 under the effect of second spring 703, when two slides 702 keep away from each other simultaneously, drive two diaphragms 804 and keep away from each other this moment, and then annular frame 803 passes through connecting pipe 805 and inhales from gasbag 801, and then gasbag 801 contracts, make switch body 2 upper end can laminate with clamp plate 802 lower extreme, and then clamp plate 802 compresses tightly switch body 2, thereby avoid switch body 2 to rock in shell 1, and can also cushion the vibrations that switch body 2 received, thereby increase its stability, avoided directly exposing switch body 2 outside simultaneously, service life has been prolonged.

Referring to fig. 3 and 8, be equipped with cooling mechanism 9 that assists the cooling in switch body 2 on shell 1, cooling mechanism 9 is including the bar chamber 901 of seting up shell 1 top, be equipped with the coolant liquid in the bar chamber 901, the sealed sliding connection of bar chamber 901 inner wall has magnetic sheet 903, 1 inner wall fixedly connected with back flow 902 of shell, back flow 902 lateral wall is laminated with shell 1 top and bottom respectively, back flow 902 both ends are the inner wall intercommunication that bar chamber 901 is located magnetic sheet 903 both sides respectively, bar chamber 901 inner wall inlays and is equipped with the electromagnetic plate 904 of inhaling mutually with magnetic sheet 903, electromagnetic plate 904, temperature sensor 309 and external alternating current power supply series connection.

Further, when the temperature is higher in shell 1, electromagnetic plate 904 this moment, the circuit switches on between temperature sensor 309 and the external alternating current power supply, let in sinusoidal formula electric current on carrying out electromagnetic plate 904, and then periodic production and magnetic plate 903 attract and repel each other's magnetic force on electromagnetic plate 904, and then magnetic plate 903 slides back and forth at bar chamber 901 inner wall, make the coolant liquid in bar chamber 901 flow at back flow 902 inner loop, and then accelerate the cooling in to shell 1, and when the great first through-hole 301 of outdoor humidity seals, the coolant liquid can also absorb heat in shell 1 this moment, thereby guarantee the cooling effect on the switch body 2.

In the invention, two L-shaped plates 704 are pulled to two sides, then the two L-shaped plates 704 drive the two sliding plates 702 to be away from each other, then the switch body 2 is placed on the two L-shaped plates 704, so that the two L-shaped plates 704 can clamp the switch body 2 under the action of a second spring 703, and the two sliding plates 702 are away from each other to drive the two transverse plates 804 to be away from each other, so that the annular frame 803 is sucked from the air bag 801 through the connecting pipe 805, then the air bag 801 contracts, so that the upper end of the switch body 2 can be attached to the lower end of the pressing plate 802, and then the pressing plate 802 presses the switch body 2, thereby increasing the stability of the switch body 2, and then the shell door 4 is closed to seal the shell 1;

when the outdoor humidity is low and the temperature in the housing 1 is high, the circuit between the conductive spring 307, the humidity sensor 308, the temperature sensor 309 and the external power supply is conducted, and then the conductive spring 307 is electrified and contracted, so as to drive the vertical plate 304 to move upwards, so that the plurality of first through holes 301 and the plurality of second through holes 305 correspond one to one, and further the outdoor cold air can flow in the housing 1, and further the heat in the housing 1 is dissipated, so as to cool the switch body 2, when the outdoor air humidity is high, the circuit between the conductive spring 307, the humidity sensor 308, the temperature sensor 309 and the external power supply is disconnected, and further the conductive spring 307 keeps the initial rotation state, namely the vertical plate 304 keeps the original position, so that the plurality of first through holes 301 and the plurality of second through holes 305 are staggered with each other, and further the outdoor cold air can not flow in the housing 1, and the air with high external humidity is prevented from entering the housing 1, causing water to penetrate the switch body 2;

when the temperature in the housing 1 is high, the electromagnetic plate 904, the temperature sensor 309 and an external alternating current power supply are conducted, sinusoidal current is conducted to the electromagnetic plate 904, magnetic force which is attracted and repelled with the magnetic plate 903 is periodically generated on the electromagnetic plate 904, and therefore the magnetic plate 903 is driven to slide back and forth on the inner wall of the bar-shaped cavity 901, cooling liquid in the bar-shaped cavity 901 flows in the return pipe 902 in a circulating mode, cooling in the housing 1 is accelerated, and when the first through hole 301 with high outdoor humidity is closed, the cooling liquid can absorb heat in the housing 1, and therefore the cooling effect of the switch body 2 is guaranteed;

when the external cold air flows in the housing 1 through the fixing frame 501 and the air inlet pipe 503, the silica gel particles in the moisture absorption bag 502 can absorb moisture in the cold air, so that the cold air is kept dry, thereby increasing the waterproof effect on the switch body 2, and when more moisture is absorbed in the silica gel particles, the volume of the moisture absorption bag 502 is increased, so that the extrusion push plate 603 moves towards the direction close to the inner wall of the fixing frame 501, the second wedge plate 608 extrudes the first wedge plate 607, so that the first wedge plate 607 drives the conductive block 606 to slide upwards through the fixing rod, when the conductive block 606 slides upwards to contact with the two conductive plates 605, at the moment, the conductive block 606, the conductive plate 605, the circuit between the heating plate 601 and the external power supply is conducted, at the moment, the heating plate 601 is electrified to generate heat, thereby drying the silica gel particles, and when the heating plate 601 is electrified, at the moment, the first electromagnetic valve 609 and the second electromagnetic valve 610 are both electrified, and then first solenoid valve 609 is closed, and second solenoid valve 610 is opened, and then the steam after the silica gel granule heating passes through exhaust pipe 504 and discharges outside shell 1 for the silica gel granule can be dried used repeatedly, need not the manual work and carries out periodic replacement, thereby further assurance to switch body 2 waterproof.