CN212277848U

CN212277848U - Fire-resistant junction box

Info

Publication number: CN212277848U
Application number: CN202020871755.XU
Authority: CN
Inventors: 何军涛; 何勇
Original assignee: Shanghai Qin Lan Electrical System Engineering Co ltd
Current assignee: Shanghai Qin Lan Electrical System Engineering Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-01-01
Anticipated expiration: 2030-05-21

Abstract

The utility model belongs to the technical field of cable connection, and particularly discloses a fire-resistant junction box, which comprises a lower shell and an upper shell; screw holes are formed in the four corners of the bottom surface of the lower shell, and screw rods are arranged at the positions, corresponding to the screw holes, of the upper shell; the screw is a hollow round pipe, a thread structure is arranged in the screw, and a fixing bolt is arranged in the screw hole; the fixing bolt penetrates through the screw hole, is embedded into the screw rod and is respectively in threaded connection with the screw hole and the screw rod; binding posts are arranged on the front side and the rear side of the lower shell, the binding posts penetrate through the lower shell and are fixedly connected with the through bar inside the lower shell, and fire-proof columns are sleeved on the outer sides of the binding posts; the length of the fireproof column is greater than that of the wiring column, and the fireproof column is fixed on the front side and the rear side of the lower shell through welding; and sealing strips are arranged on the bottom surface of the upper shell and the top surface of the lower shell.

Description

Fire-resistant junction box

Technical Field

The utility model relates to a cable junction technical field specifically is a fire-resistant terminal box.

Background

At present, the terminal box can be used usually in the defeated construction of erectting of electric power electric wire netting, and traditional terminal box structure is comparatively simple, except having insulating and waterproof effect, does not possess other safety protection function to traditional terminal box seal structure is adhesive fixation, nevertheless after using a period, its sealed glue often can drop, leads to its sealing performance relatively poor. In addition, the demand for electric power is great due to the increase of activities of people, and safety accidents such as fire disasters and the like are caused at cable joints due to overhigh power, so that property loss is caused.

Disclosure of Invention

An object of the utility model is to provide a fire-resistant terminal box to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a fire-resistant junction box comprises a lower shell and an upper shell; screw holes are formed in the four corners of the bottom surface of the lower shell, and screw rods are arranged at the positions, corresponding to the screw holes, of the upper shell; the screw is a hollow round pipe, a thread structure is arranged in the screw, and a fixing bolt is arranged in the screw hole; the fixing bolt penetrates through the screw hole, is embedded into the screw rod and is respectively in threaded connection with the screw hole and the screw rod; binding posts are arranged on the front side and the rear side of the lower shell, the binding posts penetrate through the lower shell and are fixedly connected with the through bar inside the lower shell, and fire-proof columns are sleeved on the outer sides of the binding posts; the length of the fireproof column is greater than that of the wiring column, and the fireproof column is fixed on the front side and the rear side of the lower shell through welding; and sealing strips are arranged on the bottom surface of the upper shell and the top surface of the lower shell.

Preferably, the bottom surfaces of the two ends of the lower shell are horizontally provided with grounding heads, and the surfaces of the end parts of the grounding heads are provided with through holes; the grounding head and the wiring terminal are made of high-temperature-resistant ceramic materials.

Preferably, one side, away from each other, of each of the two sealing strips is provided with a mounting surface which is of a wave-shaped structure; the upper shell bottom surface and the lower shell top surface are of wave-shaped structures matched with the mounting surface, and the two sealing strips are respectively fixed with the upper shell and the lower shell through gluing.

Preferably, two opposite sides of the sealing strips are respectively provided with a clamping block and a clamping groove, and the two sealing strips are clamped and fixed with the clamping grooves through the clamping blocks.

Preferably, the upper shell, the fire-proof column and the lower shell are formed by die-casting aluminum alloy materials.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with the fire prevention post in the terminal outside to the hookup location department to cable and terminal plays the guard action, prevents to catch fire and the piling up of dust.

2. The utility model discloses a set up the fixed effect of sealing strip between in order to strengthen epitheca and inferior valve to the wave type structure that sets up jointly through epitheca, inferior valve and sealing strip makes two sealing strips respectively with the area of contact grow between epitheca and the inferior valve, thereby improves the sticky fixed stability of sealing strip.

Drawings

FIG. 1 is a schematic view of the connection of the whole of the present invention;

fig. 2 is a sectional view of the utility model of connecting the upper shell and the lower shell.

In the figure: 1. an upper shell; 2. a lower case; 3. a screw hole; 4. a screw; 5. fixing the bolt; 6. a binding post; 7. a fire-proof column; 8. a sealing strip; 801. a mounting surface; 802. a clamping block; 803. a card slot; 9. a grounding head; 10. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a fire-resistant junction box comprises a lower shell 2 and an upper shell 1; screw holes 3 are formed in the four corners of the bottom surface of the lower shell 2, and screw rods 4 are arranged at the positions, corresponding to the screw holes 3, of the upper shell 1; the screw rod 4 is a hollow circular tube, a thread structure is arranged inside the screw rod 4, and a fixing bolt 5 is arranged inside the screw hole 3; the fixing bolt 5 penetrates through the screw hole 3, is embedded into the screw rod 4 and is respectively in threaded connection with the screw hole 3 and the screw rod 4; binding posts 6 are arranged on the front side and the rear side of the lower shell 2, the binding posts 6 penetrate through the lower shell 2 and are fixedly connected with an internal row, and fire-proof columns 7 are sleeved on the outer sides of the binding posts 6; the length of the fireproof column 7 is greater than that of the binding post 6, and the fireproof column 7 is fixed on the front side and the rear side of the lower shell 2 through welding; and sealing strips 8 are arranged on the bottom surface of the upper shell 1 and the top surface of the lower shell 2.

Further, a grounding head 9 is horizontally arranged on the bottom surface, and a through hole 10 is formed in the surface of the end part of the grounding head 9; the grounding head 9 and the binding post 6 are made of high-temperature-resistant ceramic materials.

Further, an installation surface 801 is arranged on one side, away from each other, of each of the two sealing strips 8, and the installation surface 801 is of a wave-shaped structure; the bottom surface of the upper shell 1 and the top surface of the lower shell 2 are of wave-shaped structures matched with the mounting surface 801, and the two sealing strips 8 are fixed with the upper shell 1 and the lower shell 2 through gluing.

Furthermore, two opposite sides of the sealing strips 8 are respectively provided with a clamping block 802 and a clamping groove 803, and the two sealing strips 8 are clamped and fixed with the clamping groove 803 through the clamping block 802.

Further, the upper shell 1, the fireproof column 7 and the lower shell 2 are formed by die casting of aluminum alloy materials.

When the junction box is installed, a worker inserts a fixing bolt 5 into a screw rod 4 arranged on the bottom surface of the upper shell 1 from bottom to top and penetrating through a screw hole 3 arranged on the bottom surface of the lower shell 2, so that the upper shell 1 is fixedly connected with the lower shell 2, and the screw hole 3 is arranged on the bottom surface of the lower shell 2, so that dust can be prevented from falling into the junction box from the screw hole 3; the bottom surface of the upper shell 1 and the top surface of the lower shell 2 are both provided with sealing strips 8, one sides, opposite to the two sealing strips 8, are respectively provided with a clamping block 802 and a clamping groove 803, when the upper shell 1 is fixedly connected with the lower shell 2, the clamping block 802 arranged on one sealing strip 8 is clamped and fixed with the clamping groove 803 arranged on the other sealing strip 8, so that the fixing and sealing effects are enhanced, one sides, away from each other, of the two sealing strips 8 are provided with a wave-shaped mounting surface 801, the bottom surface of the upper shell 1 and the top surface of the lower shell 2 are wave-shaped structures matched with the mounting surface 801, the contact area can be increased due to the arrangement of the; the front side and the rear side of the lower shell 2 extend outwards from the binding posts 6, the outer sides of the binding posts 6 are provided with fireproof columns 7, and the fireproof columns 7 can play a dustproof role in the binding posts 6 and prevent the joints of the binding posts 6 and cables from being damaged due to the fact that the length of the fireproof columns 7 is larger than that of the binding posts 6; the upper shell 1, the fireproof column 7 and the lower shell 2 are formed by die casting of aluminum alloy materials, so that the junction box has high fireproof performance.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fire resistant junction box, characterized by: comprises a lower shell (2) and an upper shell (1); screw holes (3) are formed in the four corners of the bottom surface of the lower shell (2), and screw rods (4) are arranged in the positions, corresponding to the screw holes (3), of the upper shell (1); the screw rod (4) is a hollow circular tube, a thread structure is arranged inside the screw rod (4), and a fixing bolt (5) is arranged inside the screw hole (3); the fixing bolt (5) penetrates through the screw hole (3) and is embedded into the screw rod (4) and is respectively in threaded connection with the screw hole (3) and the screw rod (4); binding posts (6) are arranged on the front side and the rear side of the lower shell (2), the binding posts (6) penetrate through the lower shell (2) and are fixedly connected with the inner row, and fire-proof columns (7) are sleeved on the outer sides of the binding posts (6); the length of the fireproof column (7) is greater than that of the binding post (6), and the fireproof column (7) is fixed on the front side and the rear side of the lower shell (2) through welding; and sealing strips (8) are arranged on the bottom surface of the upper shell (1) and the top surface of the lower shell (2).

2. The fire resistant junction box of claim 1, wherein: the bottom surfaces of two ends of the lower shell (2) are horizontally provided with grounding heads (9), and the end surfaces of the grounding heads (9) are provided with through holes (10); the grounding head (9) and the binding post (6) are made of high-temperature-resistant ceramic materials.

3. The fire resistant junction box of claim 1, wherein: an installation surface (801) is arranged on one side, away from each other, of each of the two sealing strips (8), and the installation surface (801) is of a wave-shaped structure; the bottom surface of the upper shell (1) and the top surface of the lower shell (2) are of wave-shaped structures matched with the mounting surface (801), and the two sealing strips (8) are fixed with the upper shell (1) and the lower shell (2) through gluing.

4. The fire resistant junction box of claim 3, wherein: two opposite sides of the sealing strips (8) are respectively provided with a clamping block (802) and a clamping groove (803), and the two sealing strips (8) are clamped and fixed with the clamping grooves (803) through the clamping blocks (802).

5. The fire resistant junction box of claim 1, wherein: the upper shell (1), the fireproof column (7) and the lower shell (2) are formed by die-casting aluminum alloy materials.