Fireproof and explosion-proof switch

Abstract

The utility model discloses a fireproof explosion-proof switch, which comprises a shell and a box cover, the box cover is clamped at the top of the shell, the shell is internally provided with a placement cavity, the bottom of the box cover is provided with a first accommodating cavity, the inner side wall of the placement cavity is provided with two fixing strips in an opposite manner, the side wall of each fixing strip is provided with a clamping groove, and the clamping grooves are clamped in the clamping grooves. According to the utility model, the explosion-proof box is arranged in the placing cavity to seal and wrap the circuit board and the lower part of the conductive core, and the inert gas is filled in the explosion-proof cavity of the explosion-proof box, so that the circuit board and the conductive core are protected; the sealing cover is arranged in the second containing cavity of the clamping box, the clamping ring is inserted into the groove to press the sealing gasket, and due to the arrangement of the sealing gasket, the sealing performance of the switch socket is improved, external liquid drops are effectively prevented from entering the switch to damage an internal circuit, and the service life of the switch socket is prolonged. The waterproof effect is good.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a fireproof and explosion-proof switch. Background Technology

[0002] Switches and sockets are electrical switches and sockets installed on walls. They are common functional items in buildings and rooms, used to connect and disconnect household appliances. They also serve as furniture decorations when installed on walls. According to the activation method, switches can be divided into pull-cord switches, rotary switches, push-button switches, and touch switches. According to the connection method, switches can be divided into single-pole switches and double-pole switches.

[0003] Existing switches and sockets do not have fireproof and explosion-proof functions. Once a fire starts inside the switch, it can easily burn the internal wiring of the switch and socket, causing an explosion inside the switch and socket and damaging the entire switch and socket.

[0004] Therefore, it is necessary to provide a fireproof and explosion-proof switch to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a fireproof and explosion-proof switch to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fireproof and explosion-proof switch, comprising a housing and a cover, the cover being snapped onto the top of the housing, a placement cavity being formed inside the housing, a first receiving cavity being formed at the bottom of the cover, two fixing strips being arranged opposite each other on the inner side wall of the placement cavity, slots being formed on the side wall of the fixing strips, a connecting plate being snapped into the slots, a circuit board being arranged on the side wall of the connecting plate, a conductive core being arranged on the circuit board, an explosion-proof box being arranged inside the placement cavity, and two first sliding... The first two sliding grooves are respectively engaged with two fixing strips. The explosion-proof box has an explosion-proof cavity filled with inert gas, which completely covers the circuit board and the lower part of the conductive core. The top of the explosion-proof box has a groove with a sealing gasket inside. The top of the shell has a card box with a second receiving cavity at the bottom. The second receiving cavity has a sealing cover inside. The bottom of the sealing cover has a third receiving cavity with a retaining ring inserted into the groove.

[0007] As a preferred technical solution of this utility model, a support plate is provided in the placement cavity, the top of the support plate abuts against the bottom of the connecting plate, and a second sliding groove is provided on the front of the explosion-proof box, which slides in cooperation with the support plate.

[0008] As a preferred embodiment of this utility model, the top of the housing is provided with four protrusions, and two locking holes are provided on both sides of the second receiving cavity. The four locking holes are engaged with the four protrusions.

[0009] As a preferred embodiment of this utility model, the explosion-proof box has a second insertion hole at the top for the top of the conductive core to pass through, the second receiving cavity has a third insertion hole at the bottom for the top of the conductive core to pass through, the third receiving cavity has a fourth insertion hole at the bottom for the top of the conductive core to pass through, and the box cover has a first insertion hole at the bottom of the first receiving cavity, which is directly opposite the conductive core.

[0010] As a preferred technical solution of this utility model, the explosion-proof box is provided with connecting holes at the four corners of the top, the second receiving cavity is provided with countersunk holes at the four corners of the bottom, and the sealing cover is provided with second threaded holes at the four corners of the top. The four second threaded holes are respectively opened opposite to the four second countersunk holes. The sealing cover is locked in the card box by screwing the screw through the second countersunk hole into the second threaded hole.

[0011] As a preferred embodiment of this utility model, the side wall of the housing is provided with four locking strips, and the bottom of the first receiving cavity is provided with four locking blocks, which respectively cooperate with the four locking strips to lock in place.

[0012] As a preferred technical solution of this utility model, connecting blocks are provided at both the front and rear ends of the housing, and a first threaded hole is provided on the connecting block. Two first countersunk holes are provided at the bottom of the first receiving cavity, and a bolt is provided in the first countersunk hole. The lower end of the bolt is screwed into the first threaded hole.

[0013] As a preferred technical solution of this utility model, the side wall of the card block is provided with multiple locking teeth, which are used to adjust the tightness of the engagement between the cover and the shell.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model discloses a fireproof and explosion-proof switch. It features an explosion-proof box within the placement cavity to seal and enclose the circuit board and the lower part of the conductive core. Inert gas is filled into the explosion-proof cavity of the box to protect the circuit board and conductive core, preventing fire and explosion caused by malfunctions. The switch offers excellent fire and explosion protection. A sealing cover is installed in the second receiving cavity of the card box. A screw passes through the second countersunk hole and screws into the second threaded hole to lock the sealing cover at the bottom of the card box. The card box is then secured to the top of the housing through a locking hole and a protrusion. A retaining ring is inserted into a groove to press the sealing gasket, and then the cover is pressed firmly onto the card box. The cover is secured by a locking block and a retaining strip, and the tightness of the connection between the cover and the housing is adjusted using retaining teeth. Installation and adjustment are convenient and quick. The sealing gasket improves the sealing performance of the switch socket, effectively preventing external liquid droplets from entering the switch and damaging the internal circuitry, providing excellent waterproofing. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional exploded view of the overall structure of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the shell structure of this utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the box lid structure of this utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the explosion-proof box structure of this utility model;

[0022] Figure 6 This is a three-dimensional schematic diagram of the card box structure of this utility model;

[0023] Figure 7 This is a three-dimensional schematic diagram of the sealing cap structure of this utility model.

[0024] In the diagram: 1. Housing; 101. Placement cavity; 102. Protrusion; 103. Locking strip; 104. Fixing strip; 1041. Locking groove; 105. Support plate; 106. Connecting block; 107. First threaded hole; 2. Cover; 201. First receiving cavity; 202. Locking block; 2021. Locking tooth; 203. First insertion hole; 204. First countersunk hole; 3. Connecting plate; 4. Circuit board; 5. Explosion-proof box; 501. Explosion-proof 502. First groove; 503. Second groove; 504. Groove; 505. Connecting hole; 506. Second insertion hole; 6. Card holder; 601. Second receiving cavity; 602. Card hole; 603. Third insertion hole; 604. Second countersunk hole; 7. Sealing cover; 701. Third receiving cavity; 702. Snap ring; 703. Second threaded hole; 704. Fourth insertion hole; 8. Sealing gasket; 9. Conductive core; 10. Bolt. Detailed Implementation

[0025] The embodiments of this utility model will now be described with reference to the accompanying drawings. In this process, to ensure clarity and convenience, we may exaggerate the width of lines or the size of constituent elements in the drawings.

[0026] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the user's or operator's intent or convention. Therefore, these terms are defined based on the entire contents of this specification.

[0027] like Figures 1 to 7 As shown, a fireproof and explosion-proof switch includes a housing 1 and a cover 2. The housing 1 has a placement cavity 101. The side wall of the housing 1 is provided with four retaining strips 103. The bottom of the cover 2 has a first receiving cavity 201. The bottom of the first receiving cavity 201 is provided with four retaining blocks 202. The side wall of the retaining blocks 202 is provided with multiple retaining teeth 2021. The four retaining blocks 202 respectively cooperate with the four retaining strips 103 to lock together. The tightness of the fit between the cover 2 and the housing 1 is adjusted by the retaining teeth 2021. The front and rear ends of the housing 1 are provided with connecting blocks 106. The connecting blocks 106 are provided with first threaded holes 107. The bottom of the first receiving cavity 201 is provided with two first countersunk holes 204. The first countersunk holes 204 are provided with bolts 10. The lower end of the bolts 10 is screwed into the first threaded holes 107 to further lock the cover 2 onto the housing 1.

[0028] like Figure 3 and Figure 5As shown, two fixing strips 104 are arranged opposite each other on the inner side wall of the placement cavity 101. The fixing strips 104 have slots 1041 on their side walls, and a connecting plate 3 is engaged within these slots. A circuit board 4 is arranged on the side wall of the connecting plate 3, and a conductive core 9 is arranged on the circuit board 4. A support plate 105 is arranged inside the placement cavity 101, with its top abutting against the bottom of the connecting plate 3 for support. An explosion-proof box 5 is arranged inside the placement cavity 101. Two first sliding grooves 502 are arranged opposite each other on the outer wall of the explosion-proof box 5. The two first sliding grooves 502 respectively engage with the two fixing strips 104 in a sliding manner. The front of the explosion-proof box 5 has a second sliding groove 503, which slides in cooperation with the support plate 105. The explosion-proof box 5 has an explosion-proof cavity 501, which is filled with inert gas. The explosion-proof cavity 501 completely covers the circuit board 4 and the lower part of the conductive core 9. The inert gas prevents fire and explosion in the explosion-proof cavity 501, providing good fire and explosion protection. The top of the explosion-proof box 5 has a second insertion hole 506, through which the top of the conductive core 9 passes. The top of the explosion-proof box 5 has a groove 504, in which a sealing gasket 8 is placed. The four corners of the top of the explosion-proof box 5 have connection holes 505.

[0029] like Figure 6 and Figure 7 As shown, the top of the housing 1 is provided with four protrusions 102, and the top of the housing 1 is provided with a card box 6. The bottom of the card box 6 is provided with a second receiving cavity 601. Two card holes 602 are provided on each side wall of the second receiving cavity 601. The four card holes 602 are engaged with the four protrusions 102. The bottom of the second receiving cavity 601 is provided with a third insertion hole 603 for the top of the conductive core 9 to pass through. The bottom of the second receiving cavity 601 is provided with a second countersunk hole 604 at each of the four corners. A sealing cover 7 is provided inside the second receiving cavity 601. The bottom of the sealing cover 7 is provided with a... The third receiving cavity 701 has four second threaded holes 703 at the top corners of the sealing cover 7. The four second threaded holes 703 are respectively opened opposite to the four second countersunk holes 604. The sealing cover 7 is locked in the card box 6 by screwing the screw through the second countersunk hole 604 and screwing it into the second threaded hole 703. The bottom of the sealing cover 7 is provided with a retaining ring 702. The retaining ring 702 is inserted into the groove 504 and presses the sealing gasket 8 to enhance the overall sealing performance and waterproof effect. The bottom of the third receiving cavity 701 has a fourth insertion hole 704 for the top of the conductive core 9 to pass through.

[0030] The bottom of the first receiving cavity 201 of the cover 2 is provided with a first insertion hole 203, which is opened directly opposite the conductive core 9. The first insertion hole 203 is used for external plugs to be inserted to charge electronic products.

[0031] Specifically, the implementation method involves sealing the lower part of the circuit board 4 and the conductive core 9 within an explosion-proof box 5 installed in the placement cavity 101. Inert gas is then filled into the explosion-proof cavity 501 of the explosion-proof box 5 to protect the circuit board 4 and the conductive core 9, preventing fire and explosion caused by malfunctions in these components. This provides good fire and explosion protection. A sealing cover 7 is installed in the second receiving cavity 601 of the card box 6. The sealing cover 7 is locked in the card box 6 by screwing a screw through the second countersunk hole 604 and into the second threaded hole 703. At the bottom, the card box 6 is snapped onto the top of the housing 1 by the cooperation of the card hole 602 and the protrusion 102. The retaining ring 702 is inserted into the groove 504 to press the sealing gasket 8. Then, the box cover 2 is pressed onto the card box 6 and snapped onto the housing 1 by the cooperation of the retaining block 202 and the retaining strip 103. The tightness of the snapping between the box cover 2 and the housing 1 is adjusted by the retaining teeth 2021. The installation and adjustment are convenient and quick. The setting of the sealing gasket 8 improves the sealing performance of the switch socket and effectively prevents external liquid droplets from entering the inside of the switch and causing damage to the internal circuit. It has a good waterproof effect.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fireproof and explosion-proof switch, comprising a housing (1) and a cover (2), wherein the cover (2) is snapped onto the top of the housing (1), characterized in that: The housing (1) has a placement cavity (101) inside, and the bottom of the cover (2) has a first receiving cavity (201). Two fixing strips (104) are arranged opposite each other on the inner side wall of the placement cavity (101). A slot (1041) is formed on the side wall of each fixing strip (104), and a connecting plate (3) is engaged within the slot (1041). A circuit board (4) is arranged on the side wall of the connecting plate (3), and a conductive core (9) is arranged on the circuit board (4). An explosion-proof box (5) is placed inside the placement cavity (101). Two first sliding grooves (502) are formed opposite each other on the outer wall of the explosion-proof box (5). The two first sliding grooves (502) respectively engage with the two fixing strips (104) in a sliding manner. An explosion-proof cavity (501) is provided inside the explosion-proof box (5). The explosion-proof cavity (501) is filled with inert gas. The explosion-proof cavity (501) completely covers the circuit board (4) and the lower part of the conductive core (9). A groove (504) is provided on the top of the explosion-proof box (5). A sealing gasket (8) is provided in the groove (504). A card box (6) is provided on the top of the shell (1). A second receiving cavity (601) is provided at the bottom of the card box (6). A sealing cover (7) is provided in the second receiving cavity (601). A third receiving cavity (701) is provided at the bottom of the sealing cover (7). A retaining ring (702) is provided at the bottom of the sealing cover (7). The retaining ring (702) is inserted into the groove (504).

2. The fireproof and explosion-proof switch according to claim 1, characterized in that: A support plate (105) is provided inside the placement cavity (101). The top of the support plate (105) abuts against the bottom of the connecting plate (3). A second sliding groove (503) is provided on the front of the explosion-proof box (5). The second sliding groove (503) slides in cooperation with the support plate (105).

3. A fireproof and explosion-proof switch according to claim 1, characterized in that: The top of the housing (1) is provided with four protrusions (102), and two locking holes (602) are provided on both sides of the second receiving cavity (601). The four locking holes (602) are engaged with the four protrusions (102).

4. A fireproof and explosion-proof switch according to claim 1, characterized in that: The explosion-proof box (5) has a second socket (506) at the top, through which the top of the conductive core (9) passes. The second receiving cavity (601) has a third socket (603) at the bottom, through which the top of the conductive core (9) passes. The third receiving cavity (701) has a fourth socket (704) at the bottom, through which the top of the conductive core (9) passes. The first receiving cavity (201) of the box cover (2) has a first socket (203) at the bottom, which is directly opposite the conductive core (9).

5. A fireproof and explosion-proof switch according to claim 1, characterized in that: The explosion-proof box (5) has connection holes (505) at the top four corners, the second receiving cavity (601) has second countersunk holes (604) at the bottom four corners, and the sealing cover (7) has second threaded holes (703) at the top four corners. The four second threaded holes (703) are respectively opened opposite to the four second countersunk holes (604). The sealing cover (7) is locked in the card box (6) by screwing the screw through the second countersunk hole (604) into the second threaded hole (703).

6. A fireproof and explosion-proof switch according to claim 1, characterized in that: The side wall of the housing (1) is provided with four locking strips (103), and the bottom of the first receiving cavity (201) is provided with four locking blocks (202). The four locking blocks (202) respectively cooperate with the four locking strips (103) to lock together.

7. A fireproof and explosion-proof switch according to claim 1, characterized in that: The housing (1) is provided with connecting blocks (106) at both the front and rear ends. The connecting blocks (106) are provided with first threaded holes (107). The bottom of the first receiving cavity (201) is provided with two first countersunk holes (204). The first countersunk holes (204) are provided with bolts (10). The lower end of the bolts (10) is screwed into the first threaded holes (107).

8. A fireproof and explosion-proof switch according to claim 6, characterized in that: The side wall of the card block (202) is provided with multiple card teeth (2021).

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