Equipment junction box of transfer cable
By using a sealing gasket to seal the junction box with the cable and utilizing a fan to drive airflow for heat dissipation, the problem of device damage caused by insects entering was solved, achieving both sealing and efficient heat dissipation of the junction box.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SHENGYONG ENG TECH CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-21
AI Technical Summary
The existing cable interfaces have large gaps between the cables, allowing small animals such as insects to enter the junction box, causing damage to components and affecting the lifespan of the junction box.
A junction box for a relay cable was designed. It uses a sealing gasket to seal the conduit with the cable, combines a fan to drive airflow for heat dissipation, and uses a filter to filter impurities, prevent insects from entering, and accelerate heat dissipation.
It effectively seals the gap between the cable and the conduit, preventing insects from entering and extending the service life of the junction box. It also accelerates heat dissipation through airflow, improving heat dissipation and dust prevention.
Smart Images

Figure CN224153922U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable junction box technology, and in particular to a junction box for a relay cable. Background Technology
[0002] When assembling cables, long lines or cable conduits requiring bends are common. Using tape to wrap the cables poses a significant safety hazard, necessitating the use of junction boxes for transition. Junction boxes typically have cable interfaces on both sides for cable entry. Wires from either side pass through these interfaces and are then connected via terminals within the junction box. However, existing cable interfaces have large gaps between them and the cables. After installation, insects and other small animals can still enter the junction box through these gaps, potentially damaging internal components and hindering its usability. Therefore, we propose a new type of junction box for transferring cables. Utility Model Content
[0003] To address the aforementioned problems, this invention provides a junction box for relay cables. This invention solves the problem that existing junction boxes have large gaps between the cable interface and the cable, allowing small animals such as insects to enter the junction box after cable installation, potentially damaging internal components and hindering its use.
[0004] This utility model discloses a junction box for a relay cable, comprising a box body with a cover plate on top, a wiring plate in the middle of the box body, an inlet on one side of the lower end of the box body, and two outlets on the side of the box body away from the inlet. The inlet and outlets have the same structure. The inlet includes a conduit. Both ends of the conduit on the side away from the box body have through grooves. Connecting plates are provided on both sides of the conduit on the through grooves. Bolts are inserted into the two connecting plates on the same side of the conduit. Nuts are provided on the side of the connecting plates of the bolts. An installation groove is provided on the inner side of the conduit near the through groove, and a sealing gasket is provided in the installation groove.
[0005] In the above scheme, an air inlet is provided on one side wall of the box body, and an air outlet is provided on the side wall of the box body away from the air inlet.
[0006] In the above scheme, a first filter screen is provided inside the air inlet, and a second filter screen is provided inside the air outlet.
[0007] In the above scheme, the box body is equipped with a fan inside the air outlet.
[0008] In the above scheme, the box body is provided with four threaded holes arranged in a matrix on the top, and the cover plate is fixedly connected to the box body by screws.
[0009] In the above solution, mounting plates are provided on both sides of the lower part of the box body, and mounting holes are provided on the mounting plates.
[0010] The advantages and beneficial effects of this utility model are as follows: This utility model provides a junction box for relay cables. Through the cooperation between the sealing gasket and the cable, the contact surface between the conduit and the cable can be sealed, effectively preventing insects and other animals from entering the junction box through the gap between the conduit and the cable. A fan drives airflow, which carries away the heat generated by the electrical components inside the box as it passes through. This airflow effectively accelerates heat dissipation from the junction box. This junction box has a simple structure, good heat dissipation and dust prevention effects, and effectively seals the gap between the conduit and the cable, preventing damage from insects and other animals and effectively improving the service life of the junction box. Attached Figure Description
[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a top view of the box body of this utility model;
[0014] Figure 3 This is a schematic diagram of part A of the present invention.
[0015] Figure 4 This is a rear view of the present invention.
[0016] In the diagram: 1. Box body; 2. Cover plate; 3. Terminal block; 4. Cable inlet.
[0017] 41. Conduit; 42. Through groove; 43. Connecting plate; 44. Bolt
[0018] 45. Nut; 46. Mounting groove; 47. Sealing gasket; 5. Cable outlet.
[0019] 6. Air inlet 7. Air outlet 8. Fan 9. First filter
[0020] 10. Second filter screen; 11. Threaded hole; 12. Screw; 13. Mounting plate. Detailed Implementation
[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.
[0022] like Figure 1-4 As shown, this utility model is a junction box for relay cables, including a box body 1, a cover plate 2 on the top of the box body 1, a junction plate 3 in the middle of the box body 1, an inlet 4 at the lower end of one side of the box body 1, through which cables enter the box body 1. Two outlets 5 are provided at the lower end of the side of the box body 1 away from the inlet 4, through which cables inside the box body 1 are discharged. The inlet 4 and outlets 5 have the same structure. The inlet 4 includes a conduit 41, with through grooves 42 at both ends of the conduit 41 away from the box body 1. Connecting plates 43 are provided on both sides of the conduit 41 at the through grooves 42, and bolts are inserted into the two connecting plates 43 on the same side of the conduit 41. 44. The bolt 44 is provided with a nut 45 on one side of the connecting plate 43. The inner side of the end of the wire conduit 41 near the through groove 42 is provided with an installation groove 46. A sealing gasket 47 is provided in the installation groove 46. When the cable enters the box 1 through the inlet 4, the bolt 44 and the nut 45 are tightened. Through the mutual cooperation between the bolt 44 and the nut 45, the end of the wire conduit 41 away from the box 1 is brought closer to the cable, and the sealing gasket 47 comes into contact with the cable. Through the mutual cooperation between the sealing gasket 47 and the cable, the contact surface between the wire conduit 41 and the cable can be sealed, thereby effectively preventing insects and other animals from entering the junction box through the gap between the wire conduit 41 and the cable.
[0023] The box 1 has an air inlet 6 on one side wall and an air outlet 7 on the side wall away from the air inlet 6. Airflow can enter the box 1 through the air inlet 6. The air outlet 7 and the air inlet 6 form a channel connecting the inside and outside of the box 1, allowing airflow to circulate from the inside of the box 1. The airflow can effectively accelerate the heat dissipation of the components inside the box 1.
[0024] The air inlet 6 is provided with a first filter screen 9 inside, and the air outlet 7 is provided with a second filter screen 10. The first filter screen 9 and the second filter screen 10 can effectively filter solid impurities carried in the airflow.
[0025] The box 1 is equipped with a fan 8 inside the air outlet 7, which can effectively accelerate the flow speed of the air inside the box 1.
[0026] The box body 1 has four threaded holes 11 arranged in a matrix on the top. The cover plate 2 is fixedly connected to the box body 1 by screws 12. The screws 12 can be fixedly connected to the box body 1 through the threaded holes 11 on the box body 1.
[0027] The box body 1 is provided with mounting plates 13 on both lower ends. The mounting plates 13 are provided with mounting holes 14, through which the box body 1 can be fixedly installed.
[0028] Specifically, in this utility model, when the cable enters the box 1 through the inlet 4, the bolt 44 and nut 45 are tightened. Through the cooperation between the bolt 44 and nut 45, the end of the conduit 41 away from the box 1 moves closer to the cable, and the sealing gasket 47 contacts the cable. Through the cooperation between the sealing gasket 47 and the cable, the contact surface between the conduit 41 and the cable can be sealed, thereby effectively preventing insects and other animals from entering the junction box through the gap between the conduit 41 and the cable. When the fan 8 is working, the fan 8 drives the airflow. When the airflow passes through the inside of the box 1, the airflow can carry away the heat generated by the electrical components inside the box 1 during operation. Through the flow of air, the heat dissipation of the junction box can be effectively accelerated.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device junction box for transit cables, comprising a box body (1), characterized in that, The box body (1) is provided with a cover plate (2) on top, and a wiring plate (3) is provided in the middle of the box body (1). A wire inlet (4) is provided at the lower end of one side of the box body (1). Two wire outlets (5) are provided at the lower end of the side of the box body (1) away from the wire inlet (4). The wire inlet (4) and the wire outlet (5) have the same structure. The wire inlet (4) includes a wire conduit (41). Both ends of the wire conduit (41) away from the box body (1) are provided with through grooves (42). Both sides of the wire conduit (41) located in the through groove (42) are provided with connecting plates (43). Bolts (44) are inserted into the two connecting plates (43) located on the same side of the wire conduit (41). Nuts (45) are provided on the side of the bolts (44) located in the connecting plates (43). An installation groove (46) is provided on the inner side of the end of the wire conduit (41) near the through groove (42). A sealing gasket (47) is provided in the installation groove (46).
2. A device junction box for a transition cable according to claim 1, wherein, The box body (1) has an air inlet (6) on one side wall and an air outlet (7) on the side wall away from the air inlet (6).
3. A device junction box for a transition cable according to claim 2, wherein, The air inlet (6) is provided with a first filter screen (9) inside, and the air outlet (7) is provided with a second filter screen (10).
4. A device junction box for a transition cable according to claim 2, wherein, The box (1) is equipped with a fan (8) inside the air outlet (7).
5. The device enclosure of claim 1, wherein, The box body (1) has four threaded holes (11) arranged in a matrix on the top, and the cover plate (2) is fixedly connected to the box body (1) by screws (12).
6. The device enclosure of claim 1, wherein, The box body (1) is provided with mounting plates (13) on both sides below, and mounting holes (14) are provided on the mounting plates (13).