Junction box

Abstract

The utility model discloses a junction box, which comprises a metal main shell, the metal main shell comprises a rectangular bottom plate, side plate parts extending upwards are formed on the top surfaces of four side parts of the bottom plate, adjacent side walls of every two adjacent side plate parts in the four side plate parts are formed together, the four side plate parts form a rectangular sleeve body shape, and the rectangular sleeve body is arranged on the bottom plate. Screw joint through holes are formed in the middles of the side plate parts, and a center screw joint through hole is formed in the middle of the bottom plate. According to the utility model, a connecting plate does not need to be welded on the inner side wall of the metal main shell, the connection can be realized only by fixing the upper cover plate on the two long plates through the fixing bolts, the processing and the connection are convenient, the welding is not needed, and the product quality is ensured.

Description

Technical field:

[0001] The utility model relates to the technical field of pipeline connection equipment, and more specifically to a junction box. Background technology:

[0002] Junction boxes are used to connect various wires in various buildings. In buildings, they are set up by pre-buried pipes and are used for wiring and wiring projects of various power switches and power supply pipelines required in buildings. It is required to complete the line connection conveniently and quickly and ensure the smooth flow of the line.

[0003] In order to be fixedly connected to the upper cover body, the existing junction box needs to weld an extension plate and other components on the upper part of its inner wall, and the upper cover is fixedly connected to the extension plate by bolts to achieve the connection. The subsequent welding is troublesome to process, and the wall plate of the junction box is thin and easily deformed during welding, which affects the product quality. Utility model content:

[0004] The purpose of the utility model is to provide a junction box to address the deficiencies of the prior art. It does not require welding of a connecting plate at the inner wall of a metal main shell. It only needs to fix the upper cover plate to two elongated plates by fixing bolts to achieve connection. The processing and connection are convenient, no welding is required, and product quality is guaranteed.

[0005] The technical solutions of the utility model are as follows:

[0006] A junction box, comprising a metal main shell, the metal main shell comprising a rectangular bottom plate, the top surfaces of the four side parts of the bottom plate are formed with side plate parts extending upward, the adjacent side walls of each two adjacent side plate parts of the four side plate parts are formed together, the four side plate parts form a rectangular sleeve shape, the middle parts of the side plate parts are all formed with screw connection through holes, and the middle part of the bottom plate is formed with a central screw connection through hole;

[0007] The inner side walls of the left and right parts of the front and rear side plates of the four side plates are formed with sleeve parts extending inwards, the top surfaces of the sleeve parts are formed with connecting columns extending upwards, the middle part of the top surface of the connecting column is formed with a screw hole, and the long plate is fixedly connected to the top surface of the two connecting columns at the front or the two connecting columns at the rear by a first bolt;

[0008] A plurality of connecting screw through holes are formed on the left and right parts of the middle part of the long plate.

[0009] The top surface of the metal main shell is covered with an upper cover plate, which is fixedly connected to the two elongated plates by fixing bolts. The upper cover plate can be fixed to the two elongated plates and pressed against the top surface of the metal main shell and covers the upper part of the metal main shell by fixing bolts. It is easy to install and disassemble, and easy to connect and fix. It does not need to be fixed by welding or other methods. It only needs to process screw holes on the connecting column to carry out subsequent connection. It is easy to process and has good effect.

[0010] A lower sleeve body portion extending upward is formed on the middle top surface of the bottom plate, a central screw connection through hole is formed in the middle of the lower sleeve body portion, and the bottom end of the central screw connection through hole extends out of the bottom surface of the bottom plate.

[0011] The left and right parts of the front and rear parts of the bottom surface of the bottom plate are both formed with convex parts extending downwards.

[0012] The bottom surface of the edge of the central screw through hole of the bottom plate is formed with a hemispherical protrusion. The protrusion and the hemispherical protrusion allow a gap to exist between the bottom surface of the bottom plate and the object or wall plate below, ensuring ventilation and heat dissipation at the bottom surface of the metal main shell and improving the heat dissipation effect.

[0013] The screw portion of the fixing bolt is inserted into the corresponding through hole of the upper cover plate and screwed into the corresponding connecting screw through hole of the elongated plate. The top surface of the rotating portion of the fixing bolt is pressed against the top surface of the upper cover plate, and the bottom surface of the edge of the upper cover plate is pressed against the top surfaces of the four side plate portions.

[0014] The beneficial effects of the utility model are:

[0015] It does not need to weld a connecting plate on the inner wall of the metal main shell. It only needs to fix the upper cover plate on the two long plates by fixing bolts to achieve the connection. The processing and connection are convenient, and welding is not required, so the product quality is guaranteed. Description of the drawings:

[0016] Figure 1 It is a partial cross-sectional view of the utility model;

[0017] Figure 2 It is a partial top view of the metal main shell of the utility model;

[0018] Figure 3 for Figure 2 A partial top view without the long plate;

[0019] Figure 4 It is a side view of the metal main housing of the utility model;

[0020] Figure 5 It is a partial bottom view of the utility model. Specific implementation method:

[0021] Example: See Figures 1 to 5 As shown, a junction box includes a metal main shell 10, wherein the metal main shell 10 includes a rectangular bottom plate 11, and the top surfaces of the four side portions of the bottom plate 11 are formed with side plate portions 12 extending upward, and the adjacent side walls of each adjacent two side plate portions 12 in the four side plate portions 12 are formed together, and the four side plate portions 12 form a rectangular sleeve shape, and the middle portions of the side plate portions 12 are all formed with screw-connection through holes 13, and the middle portion of the bottom plate 11 is formed with a central screw-connection through hole 14;

[0022] The inner side walls of the left and right parts of the front and rear side plates 12 of the four side plates 12 are formed with sleeve parts 15 extending inwards, and the outer side walls of the side plates 12 corresponding to the sleeve parts 15 are formed with recessed holes extending inwards, and the recessed holes extend into the corresponding sleeve parts 15. The top surfaces of the sleeve parts 15 are formed with connecting columns 16 extending upwards, and the middle parts of the top surfaces of the connecting columns 16 are formed with screw holes, and the elongated plates 20 are fixedly connected to the top surfaces of the two front connecting columns 16 or the two rear connecting columns 16 by first bolts;

[0023] A plurality of connecting screw through holes 21 are formed on the left and right parts of the middle part of the elongated plate 20 .

[0024] Furthermore, the top surface of the metal main shell 10 is covered with an upper cover plate 30 , and the upper cover plate 30 is fixedly connected to the two elongated plates 20 by fixing bolts.

[0025] In this embodiment, the upper part of the inner side wall of the side plate portion 12 of the metal main shell 10 does not need to be fixed with the connection part by welding. The top surface of the sleeve portion 15 formed on the side plate portion 12 directly forms the connection column 16. In the later stage, it is only necessary to form a screw hole at the top end of the connection column 16. The long plate 20 is fixed to the connection column 16 by a first bolt, and then the upper cover plate 30 is fixed to the long plate 20 by a fixing bolt to achieve the connection. It is easy to install, and in the later stage, it is only necessary to process the screw hole on the connection column 16. The processing is convenient and simple, and it will not cause the deformation of the metal main shell 10. In addition, the long plate 20 also has other connection through holes, which can be connected to some plates or supports installed inside the metal main shell 10 to achieve the connection inside the metal main shell 10.

[0026] In this embodiment, a reinforcing sleeve portion 1 is formed on the inner side wall of the middle part of the four side plate portions 12, and a screw-through hole 13 is formed in the middle part of the reinforcing sleeve portion 1. The outer end of the screw-through hole 13 extends out of the outer wall surface of the corresponding side plate portion 12, and the bottom end of the reinforcing sleeve portion 1 in the middle part of the front and rear side plate portions 12 extends downward to the top surface of the bottom plate 11.

[0027] The bottom end of the sleeve portion 15 extends downward to the top surface of the bottom plate 11 .

[0028] A lower casing portion 111 extending upward is formed on the middle top surface of the bottom plate 11 , a central screw-connecting through hole 14 is formed in the middle of the lower casing portion 111 , and the bottom end of the central screw-connecting through hole 14 extends out of the bottom surface of the bottom plate 11 .

[0029] The reinforced sleeve body 1 improves the support force and the fixing firmness of the wire pipe connector connected to the screw through hole 13. Similarly, the lower sleeve body 111 also improves the support force and the fixing firmness of the wire pipe connector connected to the central screw through hole 14.

[0030] Furthermore, the left and right parts of the front and rear bottom surfaces of the bottom plate 11 are formed with downwardly extending protrusions 2. The protrusions 2 prevent the bottom surface of the bottom plate 10 from contacting the wall surface of the object or component below, thereby ensuring a gap between the two and improving the heat dissipation effect.

[0031] The bottom surface of the edge of the central screw through hole 14 of the bottom plate 11 is formed with a hemispherical protrusion 3. The hemispherical protrusion 30 also prevents the bottom surface of the bottom plate 10 from contacting the wall surface of the object or component below, ensuring a gap between the two and improving the heat dissipation effect.

[0032] Furthermore, the left and right portions of the elongated plate 20 are both formed with through holes, the screw portion of the first bolt is inserted into the corresponding through hole and screwed into the screw hole of the corresponding connecting column 16, and the elongated plate 20 is clamped between the top surface of the corresponding connecting column 16 and the bottom surface of the rotating portion of the first bolt.

[0033] The screw portion of the fixing bolt is inserted into the corresponding through hole of the upper cover plate 30 and screwed into the corresponding connecting screw through hole 21 of the elongated plate 20. The top surface of the rotating portion of the fixing bolt is pressed against the top surface of the upper cover plate 30, and the bottom surface of the edge of the upper cover plate 30 is pressed against the top surfaces of the four side plate portions 12.

[0034] A rectangular protrusion 31 extending downward is formed on the bottom edge of the upper cover plate 30, and a rectangular frame-shaped groove extending inward is formed in the middle of the outer wall of the rectangular protrusion 31. A rectangular sealing sleeve 32 is inserted into the outer side of the rectangular protrusion 31, and the inner wall of the rectangular sealing sleeve 32 is tightly against the outer wall of the rectangular protrusion 31. A rectangular frame-shaped protrusion strip 33 is formed in the middle of the inner wall of the rectangular sealing sleeve 32, and the protrusion strip 33 is nested in the groove. The outer wall of the rectangular sealing sleeve 32 is tightly against the inner walls of the four side plate portions 12, and a radially extending edge 34 is formed on the inner wall of the bottom end of the rectangular sealing sleeve 32, and the top surface of the radially extending edge 34 is tightly against the bottom surface of the rectangular protrusion 31.

[0035] The rectangular sealing sleeve 32 improves the sealing effect of the connection between the upper cover plate 30 and the metal main shell 10 .

[0036] The above description is only a preferred embodiment of the utility model. It is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A junction box, comprising a metal main housing (10), characterized in that: The metal main shell (10) comprises a rectangular bottom plate (11), the top surfaces of the four side portions of the bottom plate (11) are formed with side plate portions (12) extending upward, the adjacent side walls of each two adjacent side plate portions (12) of the four side plate portions (12) are formed together, the four side plate portions (12) form a rectangular sleeve shape, the middle portions of the side plate portions (12) are all formed with screw-connection through holes (13), and the middle portion of the bottom plate (11) is formed with a central screw-connection through hole (14); The inner side walls of the left and right parts of the front and rear two side plate parts (12) of the four side plate parts (12) are both formed with sleeve parts (15) extending inwards, the top surfaces of the sleeve parts (15) are both formed with connecting columns (16) extending upwards, and the middle part of the top surface of the connecting column (16) is formed with a screw hole, and the elongated plate (20) is fixedly connected to the top surface of the two front connecting columns (16) or the two rear connecting columns (16) by a first bolt; A plurality of connecting screw through holes (21) are formed on the left and right parts of the middle part of the elongated plate (20).

2. A junction box according to claim 1, characterized in that: The top surface of the metal main shell (10) is covered with an upper cover plate (30), and the upper cover plate (30) is fixedly connected to the two elongated plates (20) by fixing bolts.

3. A junction box according to claim 1, characterized in that: The bottom end of the sleeve portion (15) extends downwardly to be formed onto the top surface of the bottom plate (11).

4. A junction box according to claim 1, characterized in that: A lower casing portion (111) extending upward is formed on the middle top surface of the bottom plate (11), a central screw-connecting through hole (14) is formed in the middle of the lower casing portion (111), and the bottom end of the central screw-connecting through hole (14) extends out of the bottom surface of the bottom plate (11).

5. A junction box according to claim 1, characterized in that: The front part and the left part and the right part of the rear part of the bottom surface of the bottom plate (11) are both formed with convex parts (2) extending downwards.

6. A junction box according to claim 1, characterized in that: The bottom surface at the edge of the central screw-connected through hole (14) of the bottom plate (11) is formed with a hemispherical protrusion (3).

7. A junction box according to claim 1, characterized in that: The left and right parts of the elongated plate (20) are both formed with through holes, the screw portion of the first bolt is inserted into the corresponding through hole and screwed into the screw hole of the corresponding connecting column (16), and the elongated plate (20) is clamped between the top surface of the corresponding connecting column (16) and the bottom surface of the rotating portion of the first bolt.

8. A junction box according to claim 2, characterized in that: The screw portion of the fixing bolt is inserted into the corresponding through hole of the upper cover plate (30) and is screwed into the connecting screw through hole (21) of the corresponding elongated plate (20); the top surface of the rotating portion of the fixing bolt is pressed against the top surface of the upper cover plate (30); and the bottom surface of the edge of the upper cover plate (30) is pressed against the top surfaces of the four side plate portions (12).

9. A junction box according to claim 8, characterized in that: The bottom edge of the upper cover plate (30) is formed with a rectangular protrusion (31) extending downward, the middle of the outer wall of the rectangular protrusion (31) is formed with a rectangular frame-shaped groove extending inward, the rectangular sealing sleeve (32) is inserted into the outer side of the rectangular protrusion (31), the inner wall of the rectangular sealing sleeve (32) is tightly attached to the outer wall of the rectangular protrusion (31), the middle of the inner wall of the rectangular sealing sleeve (32) is formed with a rectangular frame-shaped protrusion strip (33), the protrusion strip (33) is nested in the groove, and the outer wall of the rectangular sealing sleeve (32) is tightly attached to the inner walls of the four side plate parts (12).

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