Modularized three-proofing distribution box

Abstract

The utility model discloses a modularized three-proofing power distribution box, which comprises a power distribution box bottom shell with an opening on one side, and a power distribution box end cover is hermetically arranged on the opening side of the power distribution box bottom shell through screws; a busbar is fixed in the distribution box bottom shell, and the upper side and the lower side of the busbar are provided with a plurality of wiring terminals. The top and the bottom of the distribution box bottom shell are respectively provided with a plurality of wiring through holes which are communicated internally and externally, threading fixing pipes are fixed in the wiring through holes, cables are arranged in the threading fixing pipes in a penetrating mode, and a plurality of sealing semi-rings are arranged between the outer side faces of the cables and the inner side faces of the threading fixing pipes in a sealing mode; the distribution box is provided with multiple closed protection structures, so that outside harmful substances such as moisture and dust cannot intrude into the distribution box, and the working reliability of the distribution box is guaranteed; a plurality of conical surface sector rings in each sealing constraint sleeve can form a sealing ring with an annular structure between the outer side surface of the cable and the inner side wall of the sealing constraint sleeve, and the sealing ring serves as a first protection measure and can effectively isolate external moisture and dust.

Description

Technical Field

[0001] This utility model relates to the field of power distribution box technology, specifically a modular three-proof power distribution box. Background Technology

[0002] A power distribution box is a type of industrial connector. It is a device that converts a single power supply or data input into multiple current or data signals. Generally, M8 and M12 power distribution boxes refer to those with M8 or M12 connectors. The difference between them and ordinary sockets is that ordinary sockets only have positive and negative power outputs, or an additional ground wire, while industrial power distribution boxes have pin-shaped I / O ports for power output.

[0003] When routing power lines, a power distribution box is needed to split and convert the power. However, existing power distribution boxes have poor sealing, which can easily allow moisture to enter the box and cause short circuits in the power lines, reducing the practicality of the power distribution box. Utility Model Content

[0004] The purpose of this invention is to provide a modular, three-proof power distribution box that can effectively improve the protection performance of the power distribution box and reduce the occurrence of failures.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A modular tri-proof power distribution box includes a power distribution box bottom shell with an opening on one side, and a power distribution box end cap is provided on the opening side of the power distribution box bottom shell by screws.

[0007] A busbar is fixed inside the bottom shell of the distribution box, and multiple wiring terminals are provided on the upper and lower sides of the busbar.

[0008] The top and bottom of the distribution box have multiple through holes that connect the inside and outside. A wire-passing fixing tube is fixed inside the through hole, and a cable is passed through the wire-passing fixing tube. Multiple sealing semi-rings are provided between the outer side of the cable and the inner side of the wire-passing fixing tube.

[0009] Preferably, the end of the wire fixing tube outside the bottom shell of the distribution box is provided with a sealing constraint sleeve, and the end of the sealing constraint sleeve away from the bottom shell of the distribution box has a tapered structure;

[0010] The cable passes through the inside of the sealing constraint sleeve, and multiple conical fan rings are provided to seal the inner wall of the sealing constraint sleeve and the outer side of the cable.

[0011] Explanation: The multiple conical fan rings inside each sealing constraint sleeve can form a ring-shaped sealing ring between the outer side of the cable and the inner wall of the sealing constraint sleeve, serving as the first line of protection and effectively isolating external moisture and dust.

[0012] Preferably, the end face connecting the bottom shell of the power distribution box and the end cover of the power distribution box has an annularly arranged sealing ring mating groove, and a sealing ring is sealed in the sealing ring mating groove.

[0013] Note: The sealing ring effectively seals the connection between the bottom shell of the power distribution box and the end cover of the power distribution box.

[0014] Preferably, a first auxiliary sealing plate is fixed inside the bottom shell of the power distribution box on both the upper and lower sides of the busbar, and a second auxiliary sealing plate is fixed inside the end cover of the power distribution box on both the upper and lower sides of the busbar. The first auxiliary sealing plate and the second auxiliary sealing plate are sealed together on the same plane and close to each other.

[0015] The first auxiliary sealing plate and the second auxiliary sealing plate have multiple through holes on one side for sealing. The cable is inserted into the through holes, and a through sealing ring is used to seal the inner wall of the through hole and the outer side of the cable.

[0016] Explanation: The first and second auxiliary sealing plates, which are sealed in a one-to-one correspondence, are called sealing partitions. The sealing partitions on the upper and lower sides of the busbar form a separate sealed chamber, which surrounds the main electrical components such as the busbar. The sealing partition on the upper side of the busbar and the top of the distribution box, as well as the lower side of the busbar and the bottom of the distribution box, each form a sealed isolation chamber. The design of the sealed isolation chambers serves as a third layer of protection, which can effectively isolate external moisture and dust, preventing external moisture and dust from corroding the electrical components inside the distribution box.

[0017] Preferably, a vertically penetrating heat dissipation shell is fixed to the outer side of the bottom shell of the power distribution box, and a heat-conducting plate is attached and fixed between the busbar and the inner side wall of the bottom shell of the power distribution box. One side of the heat-conducting plate extends into the interior of the heat dissipation shell, and multiple vertically extending heat dissipation fins are fixed on the part of the heat-conducting plate that extends into the interior of the heat dissipation shell.

[0018] Note: The heat dissipation design with a purely physical isolation structure can effectively isolate external moisture and dust from entering the power distribution box while ensuring heat dissipation performance.

[0019] Compared with the prior art, the beneficial effects of this utility model are reflected in the following aspects:

[0020] 1. The present invention has a reasonable structural design. The power distribution box has multiple sealed protection structures to ensure that external moisture, dust and other harmful substances will not enter the inside of the power distribution box, thus ensuring the reliability of the power distribution box.

[0021] 2. The power distribution box of this utility model has multiple conical fan rings in each sealing constraint sleeve, which can form a ring-shaped sealing ring between the outer side of the cable and the inner side wall of the sealing constraint sleeve. As the first line of protection, it can effectively isolate external moisture and dust.

[0022] 3. The power distribution box of this utility model has multiple sealing half rings in each wire fixing tube, which can also form a ring-shaped sealing ring between the outer side of the cable and the inner side of the wire fixing tube, as a second protection measure to further effectively isolate external moisture and dust.

[0023] 4. The power distribution box of this utility model has multiple sealed chambers inside, which surround the main electrical components such as the busbar. The design of the sealed isolation chambers serves as a third layer of protection, which can effectively isolate external moisture and dust, and prevent external moisture and dust from corroding the electrical components inside the power distribution box. Attached Figure Description

[0024] Figure 1 This is the front view of this utility model;

[0025] Figure 2 yes Figure 1 The left view;

[0026] Figure 3 yes Figure 1 Top view;

[0027] Figure 4 This is a schematic diagram of the bottom shell of the power distribution box of this utility model.

[0028] In the diagram, 10-Distributor box bottom shell, 101-Wiring through hole, 102-Sealing ring mating groove, 103-Sealing ring, 11-Distributor box end cover, 12-Busbar, 121-Terminal, 13-Wire fixing tube, 131-Sealing half ring, 14-Sealing constraint sleeve, 141-Conical fan ring, 151-First auxiliary sealing plate, 152-Second auxiliary sealing plate, 153-Wire through hole, 154-Wire sealing ring, 16-Heat dissipation shell, 161-Heat conduction plate, 162-Heat dissipation fins, 20-Cable. Detailed Implementation

[0029] The following is combined with Figures 1-4 This utility model will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of their respective main views or structural schematic diagrams.

[0030] Example 1:

[0031] A modular, three-proof power distribution box, such as Figure 1 , Figure 2 As shown, the bottom shell 10 of the power distribution box has an opening on one side, and the opening side of the bottom shell 10 of the power distribution box is sealed with a power distribution box end cap 11 by screws.

[0032] like Figure 1 As shown, a busbar 12 is fixed inside the bottom shell 10 of the distribution box, and multiple terminals 121 are provided on the upper and lower sides of the busbar 12.

[0033] The bottom shell 10 of the distribution box has multiple through holes 101 that are connected inside and outside. A wire fixing tube 13 is fixed inside the through hole 101. A cable 20 is passed through the wire fixing tube 13. (This application does not make any improvement to the cable 20.) Multiple sealing half rings 131 are provided between the outer side of the cable 20 and the inner side of the wire fixing tube 13.

[0034] Multiple sealing semi-rings 131 in each wire-fixing tube 13 together form an annular structure that seals and fills the gap between the outer side of the cable 20 and the inner side of the wire-fixing tube 13.

[0035] like Figure 4 As shown, the end face of the junction box bottom shell 10 connected to the junction box end cover 11 has an annularly arranged sealing ring mating groove 102, and a sealing ring 103 is sealed in the sealing ring mating groove 102.

[0036] Example 2:

[0037] Based on Example 1, such as Figure 1 As shown, a sealing constraint sleeve 14 is provided at one end of the wire fixing tube 13 outside the bottom shell 10 of the distribution box, and the end of the sealing constraint sleeve 14 away from the bottom shell 10 of the distribution box has a tapered structure.

[0038] The cable 20 passes through the inside of the sealing constraint sleeve 14, and a plurality of conical fan rings 141 are provided to seal between the inner side wall of the sealing constraint sleeve 14 and the outer side of the cable 20.

[0039] The sealing constraint sleeve 14 is connected to the outer end of the wire-threading fixing tube 13 by a threaded connection.

[0040] The outer surface of the conical fan ring 141 is a conical structure, and the outer surface of the conical fan ring 141 is in close contact with the conical part of the inner side of the sealing constraint sleeve 14. The inner side of the conical fan ring 141 is an inner cylindrical surface, and the inner side of the conical fan ring 141 is in close contact with the outer surface of the cable 20.

[0041] Example 3:

[0042] Based on Example 2, such as Figure 2As shown, a first auxiliary sealing plate 151 is fixed inside the bottom shell 10 of the power distribution box, located on the upper and lower sides of the busbar 12. A second auxiliary sealing plate 152 is fixed inside the end cover 11 of the power distribution box, located on the upper and lower sides of the busbar 12. The first auxiliary sealing plate 151 and the second auxiliary sealing plate 152 are in the same plane and close to each other for sealing cooperation.

[0043] The first auxiliary sealing plate 151 and the second auxiliary sealing plate 152 have a plurality of through holes 153 on one side for sealing cooperation. The cable 20 is inserted into the through holes 153. A through sealing ring 154 is used to seal and fill the space between the inner wall of the through hole 153 and the outer side of the cable 20.

[0044] Example 4:

[0045] Based on Example 3, such as Figure 3 As shown, a vertically penetrating heat dissipation shell 16 is fixed on the outer side of the bottom shell 10 of the power distribution box. A heat-conducting plate 161 is attached and fixed between the busbar 12 and the inner side wall of the bottom shell 10 of the power distribution box. One side of the heat-conducting plate 161 extends into the interior of the heat dissipation shell 16. Multiple vertically extending heat dissipation fins 162 are fixed on the part of the heat-conducting plate 161 that extends into the interior of the heat dissipation shell 16.

[0046] Both the heat-conducting plate 161 and the heat dissipation fins 162 are made of copper, and the structure and layout of the heat dissipation fins 162 are existing technologies.

[0047] The portion of the heat-conducting plate 161 that passes through the bottom shell 10 of the power distribution box and the heat dissipation circulation shell 16 is sealed to it.

[0048] It should be noted that the busbar 12, terminal block 121, and sealing ring 103 used in this application are all based on existing technology and are not specifically limited here. Those skilled in the art can choose according to their needs, as long as the technical solution of this application can be achieved.

[0049] The sealing half-ring 131, the conical fan ring 141, and the threaded sealing ring 154 in this application are all made of rubber.

[0050] In practical applications, the power distribution box of this utility model adopts a multi-protection structure, which can effectively prevent external moisture, dust and other contaminants from entering the power distribution box.

[0051] Multiple conical fan rings 141 within each sealing constraint sleeve 14 can form a ring-shaped sealing ring between the outer side of the cable 20 and the inner wall of the sealing constraint sleeve 14, serving as the first line of protection and effectively isolating external moisture and dust.

[0052] Multiple sealing half-rings 131 in each cable fixing tube 13 can also form a ring-shaped sealing ring between the outer side of the cable 20 and the inner side of the cable fixing tube 13, as a second protective measure to further effectively isolate external moisture and dust.

[0053] The first auxiliary sealing plate 151 and the second auxiliary sealing plate 152, which are sealed in a one-to-one correspondence, are called sealing partitions. The sealing partitions on the upper and lower sides of the busbar 12 form a separate sealed chamber that surrounds the main electrical components such as the busbar 12.

[0054] The sealing partition on the upper side of the busbar 12 and the top of the distribution box, as well as the lower side of the busbar 12 and the bottom of the distribution box, each form a sealed isolation chamber. The design of the sealed isolation chamber serves as a third layer of protection, effectively isolating external moisture and dust and preventing external moisture and dust from corroding the electrical components inside the distribution box.

[0055] The heat generated by the operation of the electrical components will be conducted to the heat conduction plate 161, and the heat on the heat conduction plate 161 will be conducted away through multiple heat dissipation fins 162 and air via thermal convection, thus achieving the heat dissipation function.

[0056] The heat dissipation mechanism is designed with a physical isolation structure from the inside of the power distribution box, which can effectively prevent external moisture and dust from entering the inside of the power distribution box.

Claims

1. A modular, three-proof power distribution box, characterized in that, The power distribution box includes a bottom shell (10) with an opening on one side, and a power distribution box end cap (11) is provided on the opening side of the bottom shell (10) by screws. A busbar (12) is fixed inside the bottom shell (10) of the distribution box, and the busbar (12) has multiple terminals (121) on its upper and lower sides; The bottom shell (10) of the power distribution box has multiple through holes (101) with internal and external communication at the top and bottom. A wire fixing tube (13) is fixed in the through hole (101), and a cable (20) is threaded through the wire fixing tube (13). Multiple sealing half rings (131) are sealed between the outer side of the cable (20) and the inner side of the wire fixing tube (13).

2. The modular three-proof power distribution box according to claim 1, characterized in that, The end of the wire fixing tube (13) located outside the bottom shell (10) of the power distribution box is provided with a sealing constraint sleeve (14), and the end of the sealing constraint sleeve (14) away from the bottom shell (10) of the power distribution box has a tapered structure. The cable (20) passes through the inside of the sealing constraint sleeve (14), and a plurality of conical fan rings (141) are provided between the inner wall of the sealing constraint sleeve (14) and the outer side of the cable (20).

3. A modular three-proof power distribution box according to claim 1, characterized in that, The bottom shell (10) of the power distribution box has an annularly arranged sealing ring mating groove (102) on the end face where it connects with the end cover (11) of the power distribution box, and a sealing ring (103) is sealed in the sealing ring mating groove (102).

4. A modular three-proof power distribution box according to claim 1, characterized in that, Inside the bottom shell (10) of the power distribution box, a first auxiliary sealing plate (151) is fixed on each of the upper and lower sides of the busbar (12). Inside the end cover (11) of the power distribution box, a second auxiliary sealing plate (152) is fixed on each of the upper and lower sides of the busbar (12). The first auxiliary sealing plate (151) and the second auxiliary sealing plate (152) are in the same plane and close to each other for sealing cooperation. The first auxiliary sealing plate (151) and the second auxiliary sealing plate (152) have a plurality of through holes (153) on one side of their sealing fit. The cable (20) passes through the through holes (153). A through sealing ring (154) is used to seal between the inner wall of the through hole (153) and the outer side of the cable (20).

5. A modular three-proof power distribution box according to claim 1, characterized in that, A vertically penetrating heat dissipation shell (16) is fixed to the outside of the bottom shell (10) of the power distribution box. A heat-conducting plate (161) is attached and fixed between the busbar (12) and the inner side wall of the bottom shell (10) of the power distribution box. One side of the heat-conducting plate (161) extends into the interior of the heat dissipation shell (16). Multiple vertically extending heat dissipation fins (162) are fixed on the part of the heat-conducting plate (161) that extends into the interior of the heat dissipation shell (16).

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