Explosion-proof junction box

Abstract

The utility model discloses an explosion-proof junction box, which relates to the technical field of junction boxes and comprises a junction box assembly, an explosion-proof cover assembly is fixedly mounted at the top of the junction box assembly, an explosion-proof shell assembly is fixedly mounted at the top of the explosion-proof cover assembly, and the explosion-proof cover assembly comprises a cover body. Second screw holes are formed in the inner sides of the four edges of the cover body, connecting screws are inserted into the second screw holes in a penetrating mode, the tops of the connecting screws are in threaded connection with clamping heads, the clamping heads are arranged at the top of the cover body, and clamping grooves are formed in the outer sides of the clamping heads; the inner sides of the four edges of the shell are all fixedly provided with fixed hook claws, the inner side of the bottom of the shell is provided with explosion-proof ribs, and the explosion-proof ribs are arranged in a #-shaped structure; according to the explosion-proof device, the explosion-proof performance can be improved, the explosion-proof shell assembly is preferentially damaged when the explosion intensity is too large, the explosion-proof shell assembly can be replaced, and the explosion-proof device has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, specifically to an explosion-proof junction box. Background Art

[0002] A junction box is an electrical device used to protect electrical connections from environmental influences and to provide a safe interface for connecting different circuits or wires. It is typically made of plastic or metal, and its internal space can accommodate various types of connectors, terminals, and other electrical fittings to facilitate the installation and maintenance of electrical connections.

[0003] Based on the above, the inventors have discovered the following problems: the current explosion-proof junction box has a relatively simple structure, and after it cracks due to an explosion on one side, the entire box needs to be replaced, which is inconvenient to use.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings to provide an explosion-proof junction box, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this utility model is to provide an explosion-proof junction box to solve the problems mentioned in the background art.

[0006] An explosion-proof junction box includes a junction box assembly, an explosion-proof cover assembly fixedly mounted on the top of the junction box assembly, and an explosion-proof shell assembly fixedly mounted on the top of the explosion-proof cover assembly. The explosion-proof cover assembly includes a cover body, with second screw holes on the inner sides of each of the four sides of the cover body. A connecting screw is inserted into the second screw hole, and a snap-fit ​​connector is threaded to the top of the connecting screw. The snap-fit ​​connector is located on the top of the cover body, and a snap-fit ​​groove is provided on the outer side of the snap-fit ​​connector. The explosion-proof shell assembly includes a shell, with fixing claws fixedly mounted on the inner sides of each of the four sides of the shell. The fixing claws engage with the snap-fit ​​grooves. Explosion-proof ribs are provided on the inner bottom of the shell, and the explosion-proof ribs are arranged in a "well" shaped structure.

[0007] By adopting the above technical solution, an explosion-proof cover assembly is fixedly installed on the top of the junction box assembly, and an explosion-proof shell assembly is fixedly installed on the top of the explosion-proof cover assembly. This facilitates the explosion-proof protection of the wiring connections inside the junction box assembly by the explosion-proof cover assembly and the explosion-proof shell assembly. A snap-fit ​​connector is threadedly connected to the top of the connecting screw. The snap-fit ​​connector is located on the top of the cover body, which facilitates the fixing of the snap-fit ​​connector to the top of the cover body and makes it easy to disassemble the snap-fit ​​connector. The snap-fit ​​connection between the fixing hook and the snap-fit ​​slot facilitates the fixing of the explosion-proof shell assembly to the top of the explosion-proof cover assembly. The explosion-proof ribs are provided on the inner side of the bottom of the shell. The explosion-proof ribs are arranged in a "well" shape, which facilitates the snap-fit ​​fixing of the explosion-proof shell assembly to the top of the explosion-proof cover assembly after the wiring and explosion-proof cover assembly are installed, providing explosion-proof protection. The top surface of the shell has no gaps and low roughness, which can achieve a good explosion-proof effect. The internal explosion-proof ribs help to improve the structural strength of the shell and can break first in the event of an excessive explosion impact, absorbing the impact and protecting the internal junction box assembly. Furthermore, a sealing groove is provided on the outer side of the bottom of the cover, and a second reinforcing rib is fixedly installed in the middle of the bottom end of the cover. By adopting the above technical solution, with the sealing groove on the outer side of the bottom of the cover and the second reinforcing rib fixedly installed in the middle of the bottom end of the cover, the structural strength and sealing performance of the cover are improved.

[0008] Furthermore, the second reinforcing rib has first screw holes at its four corners, and fixing screws are inserted into the first screw holes. By adopting the above technical solution, the fixing screws inserted into the first screw holes facilitate the fixed connection between the explosion-proof cover assembly and the junction box assembly.

[0009] Furthermore, the junction box assembly includes a box body, and a first reinforcing rib is fixedly installed in the middle of the inner side of the box body, with the top of the first reinforcing rib abutting against the bottom of a second reinforcing rib.

[0010] By adopting the above technical solution, a first reinforcing rib is fixedly installed in the middle of the inner side of the box. The top of the first reinforcing rib abuts against the bottom of the second reinforcing rib, which facilitates the improvement of the structural strength of the box, provides protection for the connection of the internal circuit, and effectively improves the explosion-proof performance.

[0011] Furthermore, the box body has wire holes at both ends, and a waterproof metal connector is inserted inside the wire holes.

[0012] By adopting the above technical solution, a waterproof metal interface is inserted inside the wire hole, which facilitates the connection of the wire inside the device.

[0013] Furthermore, a terminal block is fixedly installed in the middle of the first reinforcing rib, and arched holes are formed on both sides of the first reinforcing rib. By adopting the above technical solution, the arched holes on both sides of the first reinforcing rib facilitate the electrical connection of the wiring through the arched holes to the terminal block.

[0014] Furthermore, the first reinforcing rib has threaded holes at the top of its four corners, and the threaded holes are threadedly connected to the fixing screws.

[0015] By adopting the above technical solution, the explosion-proof cover assembly and the junction box assembly can be easily fixedly connected by threaded holes and screws.

[0016] Furthermore, a sealing ring is fixedly installed on the top of the box body, and the sealing ring is engaged with the sealing groove.

[0017] By adopting the above technical solution, the connection between the explosion-proof cover assembly and the junction box assembly is easily sealed by the locking connection between the sealing ring and the sealing groove, thereby improving the explosion-proof effect and sealing performance.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: An explosion-proof cover assembly is fixedly installed on the top of the junction box assembly, and an explosion-proof shell assembly is fixedly installed on the top of the explosion-proof cover assembly. This facilitates the explosion-proof cover assembly and the explosion-proof shell assembly to provide explosion-proof protection for the wiring connections inside the junction box assembly. A snap-fit ​​connector is threaded onto the top of the connecting screw. The snap-fit ​​connector is located on the top of the cover body, facilitating its fixed installation and disassembly. A fixing hook engages with a slot, facilitating the fixed installation of the explosion-proof shell assembly on the top of the explosion-proof cover assembly. The bottom inner side of the shell is provided with… The explosion-proof ribs are arranged in a "well" shape, which facilitates the installation of the wiring and explosion-proof cover assembly. After installation, the explosion-proof housing assembly can be snapped and fixed to the top of the explosion-proof cover assembly to provide explosion protection. The top surface of the housing is seamless and has low roughness, which can achieve a good explosion-proof effect. The internal explosion-proof ribs help to improve the structural strength of the housing and can break first in the event of excessive explosion impact, absorbing the impact and protecting the internal junction box assembly. This utility model can improve explosion-proof performance, prioritize damage to the explosion-proof housing assembly in the event of excessive explosion intensity, and allow for replacement of the explosion-proof housing assembly, thus having high practical value. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an explosion-proof junction box according to the present invention;

[0020] Figure 2 This is an exploded view of an explosion-proof junction box according to this utility model;

[0021] Figure 3 This is an exploded view of the explosion-proof cover assembly of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the explosion-proof shell assembly of this utility model;

[0023] Figure 5 This is an exploded view of the junction box assembly of this utility model.

[0024] In the diagram: 101, Junction box assembly; 10101, Box body; 10102, Wiring hole; 10103, Waterproof metal interface; 10104, Terminal block; 10105, First reinforcing rib; 10106, Arched hole; 10107, Threaded hole; 10108, Sealing ring; 102, Explosion-proof cover assembly; 10201, Cover body; 10202, Sealing groove; 10203, Second reinforcing rib; 10204, First screw hole; 10205, Fixing screw; 10206, Second screw hole; 10207, Connecting screw; 10208, Snap-fit ​​connector; 10209, Snap-fit ​​groove; 103, Explosion-proof shell assembly; 10301, Shell; 10302, Explosion-proof rib; 10303, Fixing hook. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Please see Figures 1-5This utility model provides a technical solution: an explosion-proof junction box, including a junction box assembly 101, an explosion-proof cover assembly 102 fixedly installed on the top of the junction box assembly 101, and an explosion-proof shell assembly 103 fixedly installed on the top of the explosion-proof cover assembly 102. The explosion-proof cover assembly 102 and the explosion-proof shell assembly 103 provide explosion-proof protection for the internal wiring connections of the junction box assembly 101. The explosion-proof cover assembly 102 includes a cover body 102. 01. Each of the four inner sides of the cover 10201 has a second screw hole 10206. A connecting screw 10207 is inserted into the second screw hole 10206. A snap-fit ​​connector 10208 is threaded onto the top of the connecting screw 10207. The snap-fit ​​connector 10208 is located on the top of the cover 10201. The snap-fit ​​connector 10208 is connected to the top of the cover 10201 by the threaded connection of the connecting screw 10207. The snap-fit ​​connector 10208 is located on the top of the cover 10201, which facilitates the fixing of the snap-fit ​​connector 10208 to the top of the cover 10201 and facilitates the adjustment of the snap-fit ​​connector 10208. Disassembly: The snap-fit ​​connector 10208 has a snap-fit ​​groove 10209 on its outer side. The explosion-proof housing assembly 103 includes a housing 10301. Fixing hooks 10303 are fixedly installed on the inner sides of all four sides of the housing 10301. The fixing hooks 10303 engage with the snap-fit ​​grooves 10209, facilitating the fixed installation of the explosion-proof housing assembly 103 on the top of the explosion-proof cover assembly 102. Explosion-proof ribs 10302 are provided on the inner bottom side of the housing 10301. The explosion-proof ribs 10302 are arranged in a "well" shape. The bottom inner side of 0301 is provided with explosion-proof ribs 10302. The explosion-proof ribs 10302 are arranged in a "well" shape structure, which facilitates the installation of the wiring and explosion-proof cover assembly 102. After the explosion-proof cover assembly 102 is installed, the explosion-proof shell assembly 103 can be snapped and fixed on the top of the explosion-proof cover assembly 102 to provide explosion-proof protection. The top surface of the shell 10301 has no gaps and low roughness, which can play a very good explosion-proof role. The internal explosion-proof ribs 10302 help to improve the structural strength of the shell 10301, and can break first when the explosion impact is too large, absorbing the impact and protecting the internal junction box assembly 101.

[0027] The cover 10201 has a sealing groove 10202 on the outer side of its bottom and a second reinforcing rib 10203 fixedly installed at the middle of its bottom. The sealing groove 10202 on the outer side of the bottom and the second reinforcing rib 10203 fixedly installed at the middle of its bottom improve the structural strength and sealing performance of the cover 10201.

[0028] The second reinforcing rib 10203 has first screw holes 10204 at its four corners, and fixing screws 10205 are inserted inside the first screw holes 10204. The fixing screws 10205 inserted inside the first screw holes 10204 facilitate the fixed connection between the explosion-proof cover assembly 102 and the junction box assembly 101.

[0029] The junction box assembly 101 includes a box body 10101. A first reinforcing rib 10105 is fixedly installed in the middle of the inner side of the box body 10101. The top of the first reinforcing rib 10105 abuts against the bottom of the second reinforcing rib 10203. The fixed installation of the first reinforcing rib 10105 in the middle of the inner side of the box body 10101, with the top of the first reinforcing rib 10105 abutting against the bottom of the second reinforcing rib 10203, facilitates the improvement of the structural strength of the box body 10101, provides protection for the connection of internal circuits, and effectively improves the explosion-proof performance.

[0030] The housing 10101 has wire-passing holes 10102 at both ends, and a waterproof metal connector 10103 is inserted inside the wire-passing hole 10102. This allows for easy threading of wires into the device for connection. A terminal block 10104 is fixedly installed in the middle of the first reinforcing rib 10105. Arched holes 10106 are formed on both sides of the first reinforcing rib 10105, facilitating wires to pass through the arched holes 10106 and electrically connect to the terminal block 10104.

[0031] The first reinforcing rib 10105 has threaded holes 10107 at the top of its four corners. The threaded holes 10107 are threadedly connected to the fixing screws 10205. The threaded connection between the threaded holes 10107 and the fixing screws 10205 facilitates the fixed connection between the explosion-proof cover assembly 102 and the junction box assembly 101.

[0032] A sealing ring 10108 is fixedly installed on the top of the box 10101. The sealing ring 10108 is engaged with the sealing groove 10202. The engagement of the sealing ring 10108 with the sealing groove 10202 facilitates the sealing of the connection between the explosion-proof cover assembly 102 and the junction box assembly 101, thereby improving the explosion-proof effect and sealing performance.

[0033] Specifically, the working principle of this explosion-proof junction box is as follows: During use, a waterproof metal connector 10103 is inserted through the wire hole 10102, facilitating the connection of the wiring inside the device. Arched holes 10106 are provided on both sides of the first reinforcing rib 10105, allowing the wiring to pass through and electrically connect to the terminal block 10104. A threaded connection is made to the fixing screw 10205 through the threaded hole 10107, facilitating the connection between the explosion-proof cover assembly 102 and the junction box assembly 101. A fixed connection is achieved by engaging a sealing ring 10108 with a sealing groove 10202, facilitating the sealing of the connection between the explosion-proof cover assembly 102 and the junction box assembly 101, thus improving the explosion-proof effect and sealing performance. A first reinforcing rib 10105 is fixedly installed in the center of the inner side of the box body 10101, with the top of the first reinforcing rib 10105 abutting against the bottom of the second reinforcing rib 10203, thereby improving the structural strength of the box body 10101, protecting the internal wiring connections, and effectively enhancing the explosion-proof performance. The connecting screw 10207 has a threaded connection to a snap-fit ​​connector 10208 at its top. The snap-fit ​​connector 10208 is located on the top of the cover 10201, facilitating its fixed installation and disassembly. A fixing claw 10303 engages with a slot 10209, allowing the explosion-proof housing assembly 103 to be fixedly installed on top of the explosion-proof cover assembly 102. An explosion-proof rib 10302 is provided on the inner bottom side of the housing 10301. The 10302 is arranged in a "well" shape, which facilitates the installation of the wiring and explosion-proof cover assembly 102. After installation, the explosion-proof housing assembly 103 can be snapped and fixed on the top of the explosion-proof cover assembly 102 to provide explosion protection. The top surface of the housing 10301 has no gaps and low roughness, which can play a good explosion-proof role. The internal explosion-proof ribs 10302 help to improve the structural strength of the housing 10301 and can break first when the explosion impact is too large, absorbing the impact and protecting the internal junction box assembly 101.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An explosion-proof junction box, characterized in that, The system includes a junction box assembly (101), on which an explosion-proof cover assembly (102) is fixedly mounted. An explosion-proof shell assembly (103) is fixedly mounted on the top of the explosion-proof cover assembly (102). The explosion-proof cover assembly (102) includes a cover body (10201). Each of the four inner sides of the cover body (10201) has a second screw hole (10206). A connecting screw (10207) is inserted into each of the second screw holes (10206), and a snap-fit ​​connector (10208) is threaded onto the top of each connecting screw (10207). The snap-fit ​​connector (10208) is located on the top of the cover (10201). A snap-fit ​​groove (10209) is provided on the outer side of the snap-fit ​​connector (10208). The explosion-proof shell assembly (103) includes a shell (10301). Fixing claws (10303) are fixedly installed on the inner sides of the four sides of the shell (10301). The fixing claws (10303) are engaged with the snap-fit ​​grooves (10209). An explosion-proof rib (10302) is provided on the inner side of the bottom of the shell (10301). The explosion-proof ribs (10302) are arranged in a "well" shape.

2. The explosion-proof junction box according to claim 1, characterized in that, A sealing groove (10202) is provided on the outer side of the bottom of the cover (10201), and a second reinforcing rib (10203) is fixedly installed in the middle of the bottom end of the cover (10201).

3. The explosion-proof junction box according to claim 2, characterized in that, The second reinforcing rib (10203) has first screw holes (10204) at its four corners, and fixing screws (10205) are inserted inside the first screw holes (10204).

4. The explosion-proof junction box according to claim 1, characterized in that, The junction box assembly (101) includes a box body (10101), and a first reinforcing rib (10105) is fixedly installed in the middle of the inner side of the box body (10101). The top of the first reinforcing rib (10105) abuts against the bottom of the second reinforcing rib (10203).

5. The explosion-proof junction box according to claim 4, characterized in that, The box body (10101) has wire holes (10102) at both ends, and a metal waterproof connector (10103) is inserted inside the wire holes (10102).

6. The explosion-proof junction box according to claim 5, characterized in that, A terminal block (10104) is fixedly installed in the middle of the first reinforcing rib (10105), and arched holes (10106) are opened on both sides of the first reinforcing rib (10105).

7. The explosion-proof junction box according to claim 6, characterized in that, The first reinforcing rib (10105) has threaded holes (10107) at the top of its four corners, and the threaded holes (10107) are threadedly connected to the fixing screws (10205).

8. The explosion-proof junction box according to claim 5, characterized in that, A sealing ring (10108) is fixedly installed on the top of the box body (10101), and the sealing ring (10108) is engaged with the sealing groove (10202).

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