Protective junction box

Abstract

The utility model discloses a protective junction box, which comprises a box body and a box cover, the box body and the box cover are connected through screws and enclose to form a closed space, a guide rail is arranged in the box body, a fixed block is movably arranged on the guide rail, a plurality of wiring terminals are arranged on the fixed block, four shafts of the box body are provided with through grooves, and the through grooves are communicated with the through grooves. And one of a cable gland and a plug is arranged in each through groove. The utility model has the beneficial effects that the sealing performance is good, and the situations of fire, explosion and the like can be effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the field of junction boxes, and particularly relates to a protective junction box. Background Art

[0002] A junction box is a device used to fix a terminal block and serve as a connector. It plays a role in protecting the temperature-sensitive element from the erosion of the external atmosphere and ensuring good contact between the external wire and the terminal post. However, connectors, wires, etc. inside the junction box may catch fire due to aging, poor contact, excessive load, etc., leading to fire or explosion. Therefore, a junction box that can effectively suppress the above situations is needed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a protective junction box.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A protective junction box includes a box body and a box cover. The box body and the box cover are connected by screws and enclose a closed space. A guide rail is arranged inside the box body, and a fixing block is movably arranged on the guide rail. A plurality of terminal blocks are arranged on the fixing block. Through holes are formed in four axes of the box body, and one of a gland and a plug is arranged in each through hole.

[0006] Preferably, the guide rail includes a mounting plate parallel to the bottom surface of the box body and two limiting plates perpendicular to the mounting plate. A sliding block located between the two limiting plates is slidably arranged at the bottom of the fixing block, and the mounting plate is connected to the box body by screws.

[0007] Preferably, the length of the sliding block is greater than the length of the fixing block. Through holes are formed in the two sides of the sliding block protruding from the fixing block, and strip-shaped grooves corresponding to the through holes are formed on the mounting plate.

[0008] Preferably, the ends of the gland and the plug extending into the box body are fixed by being threadedly connected with nuts.

[0009] Preferably, a receiving groove is formed on one side of the box cover facing the box body, and a sealing ring is arranged in the receiving groove. The sealing ring is adhered to the box cover by silicone.

[0010] Preferably, a sealing sleeve is sleeved on the end of the gland away from the box body, and a sealing gasket is sleeved between the gland and the box cover.

[0011] The beneficial effect of the utility model is that the space inside the box body is closed by the box cover and the plug, so that when a fire occurs due to a fault in the terminal block, the fire is not easy to spread outside the box body, playing a protective role for the remaining components. At the same time, the oxygen content in the closed space is limited, which can play a certain role in suppressing the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a partial cross-sectional view of the top surface of the utility model.

[0013] Figure 2 yes Figure 1 Cross-sectional view at UU in the middle.

[0014] Figure 3 It is a partial top view of the guide rail and the fixing box in the utility model.

[0015] Among them: box body 10, box cover 12, mounting plate 14, limiting plate 16, fixing block 18, wiring terminal 20, slider 22, through hole 24, strip groove 26, gland 28, plug 30, sealing ring 32, sealing gasket 34, sealing sleeve 36, nut 38. DETAILED DESCRIPTION

[0016] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0017] like Figures 1 to 3 As shown, a protective junction box of the utility model comprises a box body 10 and a box cover 12, the box body 10 and the box cover 12 are connected by screws and enclosed to form a closed space, a guide rail is arranged in the box body 10, a fixed block 18 is movably arranged on the guide rail, a plurality of wiring terminals 20 are arranged on the fixed block 18, and through slots are opened on the four axes of the box body 10, and one of a gland 28 and a plug 30 is arranged in each through slot;

[0018] The terminal block 20 slides on the guide rail to facilitate adjustment of its position. The cable is connected to the terminal block 20 through the cable gland 28, and the plugs 30 are installed at the other through slots. The space inside the box body 10 is sealed by the box cover 12, the cable gland 28 and the plug 30. When a fire occurs inside the box body 10 due to a short circuit or poor contact, the fire is not easy to spread to the outside of the junction box, preventing damage to other external components. In addition, since it is a closed space with limited oxygen content, it can also have a certain inhibitory effect on the fire.

[0019] The guide rail includes a mounting plate 14 parallel to the bottom surface of the box body 10 and two limit plates 16 perpendicular to the mounting plate 14. A slider 22 located between the two limit plates 16 is slidably arranged at the bottom of the fixed block 18. The mounting plate 14 is connected to the box body 10 by screws. The length of the slider 22 is greater than that of the fixed block 18. The slider 22 protrudes from both sides of the fixed block 18 and is provided with through holes 24. The mounting plate 14 is provided with strip grooves 26 corresponding to the through holes 24.

[0020] The limiting plate 16 plays a limiting role on the fixed block 18, enabling the through hole 24 to always correspond to the strip-shaped groove 26, which is convenient for installation. Then, bolts pass through the through hole 24 and the strip-shaped groove 26 and are screwed into nuts to fix the position. Finally, the mounting plate 14 is installed in the box body 10 by screws.

[0021] The ends of the gland 28 and the plug 30 extending into the box body 10 are both fixed by being threadedly connected to the nut 38; the ends of the gland 28 and the plug 30 are threaded parts, and the middle parts are smooth parts. The smooth parts penetrate into the through hole 24, and then the gland 28 and the box body 10 are pressed tightly by the threaded parts and the nut 38 to increase the sealing performance.

[0022] On one side of the box cover 12 facing the box body 10, a receiving groove is provided. A sealing ring 32 is arranged in the receiving groove. The sealing ring 32 is adhered to the box cover 12 by silica gel; the sealing performance between the box body 10 and the box cover 12 is increased by the sealing ring 32, and the sealing ring 32 is adhered to the box cover 12 by silica gel to prevent the sealing ring 32 from falling off.

[0023] A sealing sleeve 36 is sleeved on the end of the gland 28 away from the box body 10, and a sealing gasket 34 is sleeved between the gland 28 and the box cover 12; the sealing sleeve 36 and the sealing gasket 34 further increase the sealing performance of the junction box.

[0024] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0025] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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 protective junction box, characterized in that: The utility model comprises a box body and a box cover, wherein the box body and the box cover are connected by screws and enclosed to form a closed space, a guide rail is arranged in the box body, a fixed block is movably arranged on the guide rail, a plurality of connecting terminals are arranged on the fixed block, through slots are opened on the four axes of the box body, and each through slot is arranged with one of a gland and a plug.

2. The protective junction box according to claim 1, characterized in that: The guide rail includes a mounting plate parallel to the bottom surface of the box body and two limit plates perpendicular to the mounting plate. A sliding block located between the two limit plates is slidably arranged at the bottom of the fixed block. The mounting plate is connected to the box body by screws.

3. The protective junction box according to claim 2, characterized in that: The length of the sliding block is greater than that of the fixing block. The sliding block protrudes from both sides of the fixing block and is provided with through holes. The mounting plate is provided with strip grooves corresponding to the through holes.

4. The protective junction box according to claim 1, characterized in that: The ends of the gland and the plug extending into the box body are both threadedly connected with the nut for fixing.

5. The protective junction box according to claim 1, characterized in that: A receiving groove is provided on one side of the box cover facing the box body, a sealing ring is arranged in the receiving groove, and the sealing ring is adhered to the box cover by silica gel.

6. The protective junction box according to claim 1, characterized in that: A sealing sleeve is sleeved on the end of the cable gland away from the box body, and a sealing gasket is sleeved between the cable gland and the box cover.

Images