A wall-penetrating terminal

Abstract

The utility model discloses a wall -penetrating terminal, including the shell and install the copper bar of shell, be provided with the wiring tube on the shell, install the rubber plug at the wiring tube outer opening, install, and the rubber plug inserts the inner hole of wiring tube, makes first cylinder section insert first hole section, and first cylinder section outer wall close contact first hole section inner wall, and second cylinder section inserts second hole section, and second cylinder section outer wall close contact second hole section inner wall, and first step surface close contact second step surface, through above -mentioned structure increases multiple direction's sealing surface, guarantees the sealed effect, and according to each structure axial dimension's limitation simultaneously, makes first cylinder section's outer end surface with the end surface flush of wiring tube outer opening, or first cylinder section's outer end surface is lower than the end surface of wiring tube outer opening. Use rubber plug to embed completely the inner hole of wiring tube, and there is no protruding part, avoid cable terminal installation to knock off rubber plug, improve equipment safety and reliability, improve maintenance efficiency significantly, reduce manual cost.

Description

Technical Field

[0001] This utility model relates to the field of cable installation, and in particular to a through-wall terminal. Background Technology

[0002] Through-wall terminals are widely used in power connections, communication equipment, and various electrical devices, serving as an accessory for achieving electrical connections. Existing through-wall terminals include protective covers, primarily for dust and electric shock protection. Protective covers are divided into fixed and flip-top structures. Flip-top structures are generally used only for insulation protection, with sealing rings added for sealing in special locations.

[0003] In existing technology, the housing of a through-wall terminal is equipped with a copper busbar and a conduit. The copper busbar is used to connect the OT terminal. To ensure a good seal, a sealing plug is needed to seal the outer opening of the conduit. During cable installation, there is a risk that the OT terminal of the cable may knock off the sealing plug, affecting the safety and reliability of the equipment.

[0004] Therefore, how to provide a through-wall terminal that prevents the rubber plug from falling out is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a through-wall terminal that uses a rubber plug to be completely embedded in the inner hole of the wiring conduit, with no protruding parts, to prevent the rubber plug from being knocked off during cable terminal installation, thereby improving the safety and reliability of the equipment.

[0006] To solve the above-mentioned technical problems, this utility model provides a through-wall terminal, including a housing and a copper busbar installed on the housing. A wiring conduit is provided on the housing, and a rubber plug is installed at the outer opening of the wiring conduit. The inner hole of the wiring conduit is a stepped hole, comprising a first hole segment and a second hole segment arranged sequentially from the outer opening inwards. The diameter of the first hole segment is larger than the diameter of the second hole segment. A first step surface is provided between the first hole segment and the second hole segment. The rubber plug comprises a first cylindrical segment and a second cylindrical segment arranged coaxially. The diameter of the first cylindrical segment is larger than the diameter of the second cylindrical segment. A second step surface is provided between the first cylindrical segment and the second cylindrical segment. The first cylindrical segment is inserted into the first hole segment, with its outer wall in close contact with the inner wall of the first hole segment. The second cylindrical segment is inserted into the second hole segment, with its outer wall in close contact with the inner wall of the second hole segment. The first step surface is tightly fitted to the second step surface. The outer end face of the first cylindrical segment is flush with the end face of the outer opening of the wiring conduit, or the outer end face of the first cylindrical segment is lower than the end face of the outer opening of the wiring conduit.

[0007] Preferably, the housing includes a back plate, a top plate and two side plates disposed on the front side of the back plate, the two side plates being disposed opposite each other, a partition being disposed between the two side plates, two copper busbars being installed on both sides of the partition, two corresponding wiring conduits being disposed on both sides of the partition, and the wiring conduits being disposed on the front side of the back plate.

[0008] Preferably, a baffle is detachably installed at the lower end of the side plate and the partition, and a protective cover is installed on the upper part of the side plate.

[0009] Preferably, the back plate is provided with an opening for inserting the copper busbar, and a support groove is provided on the back side of the back plate. The support groove is located below the opening, and the copper busbar is inserted into the opening and connected to the support groove by bolts.

[0010] Preferably, the back plate has a rectangular washer surrounding the support groove on its back side.

[0011] Preferably, the wiring conduit and the backplate are integrally formed.

[0012] Preferably, the inner end face of the rubber stopper is provided with a process blind hole.

[0013] Preferably, multiple anti-slip rings arranged axially are provided on the outer walls of both the first cylindrical segment and the second cylindrical segment.

[0014] Preferably, positioning protrusions are provided on the inner walls of the first and second bore segments, and positioning grooves are provided at corresponding positions on the first and second cylindrical segments, with the positioning protrusions engaging in the positioning grooves.

[0015] Preferably, the outer end face of the rubber stopper is provided with a notch for inserting a disassembly tool.

[0016] This utility model provides a through-wall terminal, including a housing and a copper busbar installed on the housing. A wiring conduit is provided on the housing, and a rubber plug is installed at the outer opening of the wiring conduit. The inner hole of the wiring conduit is a stepped hole, which includes a first hole segment and a second hole segment arranged sequentially from the outer opening to the inside. The diameter of the first hole segment is larger than the diameter of the second hole segment. A first step surface is provided between the first hole segment and the second hole segment. The rubber plug includes a first cylindrical segment and a second cylindrical segment arranged coaxially. The diameter of the first cylindrical segment is larger than the diameter of the second cylindrical segment. A second step surface is provided between the first cylindrical segment and the second cylindrical segment.

[0017] The rubber plug and the inner bore of the connector are designed with a stepped hole and stepped shaft structure that fit together. During installation, the rubber plug is inserted into the inner bore of the connector, so that the first cylindrical section is inserted into the first hole section, with the outer wall of the first cylindrical section in close contact with the inner wall of the first hole section. The second cylindrical section is inserted into the second hole section, with the outer wall of the second cylindrical section in close contact with the inner wall of the second hole section. The first stepped surface is tightly fitted to the second stepped surface. This structure increases the sealing surface in multiple directions, ensuring a good seal. Simultaneously, based on the axial dimensions of each structure, the outer end face of the first cylindrical section is flush with the end face of the connector's outer opening, or the outer end face of the first cylindrical section is lower than the end face of the connector's outer opening. Using a rubber plug that is completely embedded in the inner bore of the connector, with no protruding parts, prevents the rubber plug from being knocked off during cable terminal installation, improves equipment safety and reliability, significantly increases maintenance efficiency, and reduces labor costs. Attached Figure Description

[0018] Figure 1 A schematic diagram of a specific embodiment of the through-wall terminal provided by this utility model;

[0019] Figure 2 An exploded view of a specific embodiment of the through-wall terminal provided by this utility model;

[0020] Figure 3 This is an enlarged cross-sectional view of a specific embodiment of the through-wall terminal provided by this utility model.

[0021] Among them, 1-shell; 11-back plate; 12-side plate; 13-top plate; 14-partition; 15-baffle; 16-protective cover; 17-support groove; 18-rectangular washer; 2-copper busbar; 3-connecting pipe; 31-first hole section; 32-second hole section; 4-rubber plug; 41-first cylindrical section; 42-second cylindrical section. Detailed Implementation

[0022] The core of this utility model is to provide a through-wall terminal that uses a rubber plug to be completely embedded in the inner hole of the wiring conduit, with no protruding parts, to prevent the rubber plug from being knocked off during cable terminal installation, thereby improving the safety and reliability of the equipment.

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of a specific embodiment of the through-wall terminal provided by this utility model; Figure 2 An exploded view of a specific embodiment of the through-wall terminal provided by this utility model; Figure 3 This is an enlarged cross-sectional view of a specific embodiment of the through-wall terminal provided by this utility model.

[0025] This utility model provides a through-wall terminal, including a housing 1 and a copper busbar 2 installed on the housing 1. A wiring conduit 3 is provided on the housing 1, and a rubber plug 4 is installed at the outer opening of the wiring conduit 3. The end of each component closer to the wall is the inner end, and the end farther from the wall is the outer end. The inner hole of the wiring conduit 3 is a stepped hole, which includes a first hole segment 31 and a second hole segment 32 arranged sequentially from the outer opening inward. The first hole segment 31 and the second hole segment 32 are coaxially arranged, and the diameter of the first hole segment 31 is greater than that of the second hole segment 32. The diameter of the second hole section 32, that is, the diameter of the outer end of the inner hole of the connector 3, is greater than the diameter of the inner end. Therefore, a radially extending first step surface is provided between the first hole section 31 and the second hole section 32. The rubber plug 4 is a stepped shaft structure, including a first cylindrical section 41 and a second cylindrical section 42 arranged coaxially. The diameter of the first cylindrical section 41 is greater than the diameter of the second cylindrical section 42, that is, the diameter of the outer end of the rubber plug 4 is greater than the diameter of the inner end. A radially extending second step surface is provided between the first cylindrical section 41 and the second cylindrical section 42.

[0026] The inner holes of the rubber plug 4 and the connector 3 are stepped holes and stepped shafts that fit together, with an interference fit at each contact point. The rubber plug 4 has a certain degree of elasticity and deforms slightly after insertion, ensuring a sufficiently tight seal. During installation, the rubber plug 4 is inserted into the inner hole of the connector 3. The second cylindrical section 42 first passes through the first hole section 31 and then is inserted into the second hole section 32. Simultaneously, the first cylindrical section 41 is inserted into the first hole section 31, with its outer wall in close contact with the inner wall of the first hole section 31. The second cylindrical section 42 is inserted into the second hole section 32, with its outer wall in close contact with the inner wall of the second hole section 32. The first stepped surface tightly adheres to the second stepped surface. This structure increases sealing surfaces in multiple directions, ensuring a sealing effect, while also considering the axial dimensions of each structure. In Embodiment 1, the axial length of the first cylindrical section 41 is equal to the axial depth of the first hole section 31. After full insertion, the outer end face of the first cylindrical section 41 is flush with the end face of the outer opening of the connector 3. In Embodiment 2, the axial length of the first cylindrical segment 41 is less than the axial depth of the first hole segment 31. After full insertion, the outer end face of the first cylindrical segment 41 is lower than the end face of the outer opening of the connector 3. In Embodiment 3, the outer end face of the first cylindrical segment 41 is provided with a groove structure. The axial length from the edge of the groove on the outer end face of the first cylindrical segment 41 to the first step surface is equal to the axial depth of the first hole segment 31. The axial length from the bottom of the groove on the outer end face of the first cylindrical segment 41 to the first step surface is less than the axial depth of the first hole segment 31. After full insertion, the outer end face of the first cylindrical segment 41 will not be higher than the end face of the outer opening of the connector 3.

[0027] The rubber plug 4 is fully embedded in the inner hole of the connector 3, with no protruding parts, to prevent the rubber plug 4 from being knocked off during cable terminal installation, thereby improving equipment safety and reliability, significantly improving maintenance efficiency, and reducing labor costs.

[0028] In the through-wall terminal provided in this specific embodiment of the utility model, the housing 1 includes a back plate 11, a top plate 13 disposed on the front of the back plate 11, and two side plates 12. The back plate 11 is attached to the wall surface, the two side plates 12 are disposed opposite each other, and a partition 14 is disposed between the two side plates 12. Two copper busbars 2 are installed on both sides of the partition 14, and two corresponding wiring pipes 3 are disposed on both sides of the partition 14. The wiring pipes 3 are disposed on the front of the back plate 11, and the wiring pipes 3 and the back plate 11 are integrally formed. Further, a baffle 15 is detachably installed at the lower end of the side plates 12 and the partition 14, and a protective cover 16 is installed on the upper part of the side plates 12.

[0029] Preferably, the copper busbar 2 has an L-shaped structure, including a connecting plate and a vertical plate that are connected to each other. The back plate 11 is provided with an opening for inserting the copper busbar 2. The back of the back plate 11 is provided with a support groove 17, which is located below the opening. During installation, the connecting plate of the copper busbar 2 is inserted into the opening and connected to the support groove 17 by bolts. At the same time, the vertical plate of the copper busbar 2 is located on the front of the back plate 11 and connected by bolts.

[0030] To improve the sealing effect, a rectangular washer 18 is provided on the back of the back plate 11 around the support groove 17. To improve strength, crisscrossing reinforcing ribs are provided on the side plate 12 and the back plate 11.

[0031] The structure and connection method of each component can also be adjusted according to the situation, all of which are within the protection scope of this utility model.

[0032] In the through-wall terminal provided in the specific embodiment of this utility model, the inner end face of the rubber plug 4 is provided with a blind hole for the process, forming a snap-on structure, which reduces weight and saves materials.

[0033] To improve the stability of the connection, multiple anti-slip rings are arranged axially on the outer walls of the first cylindrical section 41 and the second cylindrical section 42. The anti-slip rings are arranged around the axis of the rubber plug 4 to form a sealing ring structure, which increases the sealing effect and makes the contact tighter.

[0034] Furthermore, positioning protrusions are provided on the inner walls of both the first bore section 31 and the second bore section 32, and positioning grooves are provided at corresponding positions on the first cylindrical section 41 and the second cylindrical section 42, with the positioning protrusions engaging in the positioning grooves. This increases axial limiting, effectively preventing detachment, and also avoids the rubber plug 4 from being inserted too deeply, facilitating disassembly.

[0035] Based on the through-wall terminals provided in the above-described specific embodiments, a notch is provided on the outer end face of the rubber plug 4. When disassembly is required, a disassembly tool such as a flathead screwdriver can be inserted into the notch to easily pry up and remove the rubber plug 4. The notch is located on one side, with an asymmetrical design, which facilitates the application of force during disassembly.

[0036] The wall-penetrating terminal provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A through-wall terminal, comprising a housing (1) and a copper busbar (2) mounted on the housing (1), wherein a wiring conduit (3) is provided on the housing (1), and a rubber plug (4) is installed at the outer opening of the wiring conduit (3), characterized in that, The inner hole of the wiring conduit (3) is a stepped hole, which includes a first hole segment (31) and a second hole segment (32) arranged sequentially from the outer opening to the inside. The diameter of the first hole segment (31) is larger than the diameter of the second hole segment (32). A first step surface is provided between the first hole segment (31) and the second hole segment (32). The rubber plug (4) includes a first cylindrical segment (41) and a second cylindrical segment (42) arranged coaxially. The diameter of the first cylindrical segment (41) is larger than the diameter of the second cylindrical segment (42). The first cylindrical segment (41) and the second cylindrical segment (42) are arranged with a first step surface between them. A second stepped surface is provided between the two sections. The first cylindrical section (41) is inserted into the first hole section (31). The outer wall of the first cylindrical section (41) is in close contact with the inner wall of the first hole section (31). The second cylindrical section (42) is inserted into the second hole section (32). The outer wall of the second cylindrical section (42) is in close contact with the inner wall of the second hole section (32). The first stepped surface is in close contact with the second stepped surface. The outer end face of the first cylindrical section (41) is flush with the end face of the outer opening of the connector (3), or the outer end face of the first cylindrical section (41) is lower than the end face of the outer opening of the connector (3).

2. The through-wall terminal according to claim 1, characterized in that, The housing (1) includes a back plate (11), a top plate (13) disposed on the front of the back plate (11), and two side plates (12). The two side plates (12) are disposed opposite to each other, and a partition (14) is disposed between the two side plates (12). Two copper busbars (2) are installed on both sides of the partition (14), and two corresponding wiring pipes (3) are disposed on both sides of the partition (14). The wiring pipes (3) are disposed on the front of the back plate (11).

3. The through-wall terminal according to claim 2, characterized in that, A baffle (15) is detachably installed at the lower end of the side plate (12) and the partition (14), and a protective cover (16) is installed on the upper part of the side plate (12).

4. The through-wall terminal according to claim 3, characterized in that, The back plate (11) is provided with an opening for inserting the copper busbar (2). The back of the back plate (11) is provided with a support groove (17). The support groove (17) is located below the opening. The copper busbar (2) is inserted into the opening and connected to the support groove (17) by bolts.

5. The through-wall terminal according to claim 4, characterized in that, The back of the back plate (11) is provided with a rectangular washer (18) surrounding the support groove (17).

6. The through-wall terminal according to claim 5, characterized in that, The wiring conduit (3) and the back plate (11) are integrally formed.

7. The through-wall terminal according to claim 1, characterized in that, The inner end face of the rubber plug (4) is provided with a process blind hole.

8. The through-wall terminal according to claim 1, characterized in that, Multiple anti-slip rings arranged axially are provided on the outer wall of the first cylindrical section (41) and the outer wall of the second cylindrical section (42).

9. The through-wall terminal according to claim 1, characterized in that, Positioning protrusions are provided on the inner walls of the first hole segment (31) and the second hole segment (32), and positioning grooves are provided at corresponding positions of the first cylindrical segment (41) and the second cylindrical segment (42), and the positioning protrusions are inserted into the positioning grooves.

10. The through-wall terminal according to any one of claims 1 to 9, characterized in that, The rubber plug (4) has a notch on the outer end face for inserting a disassembly tool.

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