Large-current through-wall terminal block
The wire-free connection nose structure and the combined design of the insulating base and fixing screws solve the problems of rusting of fixing screws and exposed cold-pressed terminals in the through-wall terminal block, achieving the effect of convenient maintenance and cost reduction.
Patent Information
- Application Number
- CN202422513249.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The internal fixing screws of existing through-the-wall terminal blocks are prone to rust, causing disconnection or poor contact, making maintenance inconvenient and costly. The exposed cold-pressed terminals can easily affect surrounding components.
A wire-free connection nose structure is adopted, including a nose body and an insulating base, which is fixed by a first fixing screw and a fixing nut, avoiding the use of internal fixing screws and cold-pressed terminals, and utilizing an insulating protective jacket and a sealing groove to improve connection stability and safety.
It solves the problems of rusted internal fixing screws and exposed cold-pressed terminals, simplifies the repair process, reduces maintenance costs, and improves connection reliability and safety.
Smart Images
Figure CN223348011U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of circuit components, in particular to a high-current through-wall terminal block. Background Art
[0002] The current through-wall terminal block connection station 600, reference Figures 1 to 3 Generally, the insulating base 610 of the through-the-wall terminal block connecting base 600 is fixedly installed in the mounting hole (not shown) of the circuit wall plate (not shown). The inner end of the connecting end piece 620 is provided with an internal fixing through hole 621, and the outer end of the connecting end piece 620 is bent to form an external connecting end block 622. The insulating base 610 is provided with an end piece insertion hole 611, and the inner side of the insulating base 610 is provided with a fixing protrusion 612 protruding outward from the edge of the end piece insertion hole 631. The fixing protrusion 612 is provided with an internal fixing screw hole 6121. The inner end of the connecting end piece 620 passes through the end piece insertion hole 611, and the internal fixing through hole 621 is directly opposite the internal fixing screw hole 6121. The wire is tightened by the cold-pressed terminal, and then an internal fixing screw (not shown) is passed through the fixing through hole 621 and screwed into the internal fixing screw hole 6121 to be fixed. The external connection block 622 on the outside of the connection end piece 620 has an external fixing hole (not shown). An external fixing screw 640 passes through the hole from the inside out. The external fixing nut 650 is screwed together with the external fixing screw 640 to securely connect the external connection block 622 to the outer wall of the insulating base 610. However, the internal fixing screws on the inside of the circuit wallboard can rust over time, causing a short circuit. Alternatively, if the internal fixing screws are not tightened properly, poor contact can result. This requires disassembling the circuit wallboard to tighten the connecting screws again or replacing them, which is inconvenient for maintenance and increases manufacturing costs. Furthermore, the cold-pressed terminals are exposed on the inside of the circuit wallboard, which can easily affect surrounding components due to high voltage. Utility Model Content
[0003] The purpose of the utility model is to provide a high-current through-wall terminal block to solve the above-mentioned technical problems.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a high-current through-wall terminal block is provided, including a wire-free connection nose, an insulating base, a first fixing screw, a first fixing nut and a second fixing screw, the wire-free connection nose includes a nose body and an insulating protective jacket, the nose body includes a plurality of long, sheet-like high-conductivity copper sheets that are in contact with each other and stacked, the upper and lower ends of the plurality of high-conductivity copper sheets are respectively fitted and fixed to each other to form a first mounting end and a second mounting end, the upper end of the first mounting end is bent horizontally to form a connecting end plate, a connecting through hole is provided on the connecting end plate that passes through itself from top to bottom, a fixed end block is protruded downward from the edge of the connecting end plate, an end block jack is provided on the fixed end block, the nose body forms a flexible bending portion between the first mounting end and the second mounting end, the The protective sleeve is arranged outside the flexible bending part, and the top of the insulating base is provided with a mounting boss protruding upward, and the middle of the top of the mounting boss is recessed downward to form a nut receiving groove matching the shape and size of the nut of the first fixing screw, and the side wall of the mounting boss is provided with an end block fixing screw hole, and the insulating base is provided with a terminal insertion hole on the outside of the mounting boss, and the lower end of the first mounting end portion is inserted into the terminal insertion hole, and the first fixing screw passes upward through the connecting through hole and is screwed and fixed with the first fixing nut, and the nut of the first fixing screw is placed in the nut receiving groove, and the fixed end block abuts against the side wall of the mounting boss, and the second fixing screw passes through the end block insertion hole and is screwed and inserted into the end block fixing screw hole, thereby fixing the connecting end plate to the mounting boss.
[0005] Preferably, a second end mounting hole is provided on the second mounting end.
[0006] Preferably, the protective outer sleeve includes an insulating heat shrinkable sleeve and two insulating wear-resistant sleeves. The heat shrinkable sleeve is sleeved outside the middle of the flexible bending part, and the two wear-resistant sleeves are respectively sleeved outside the flexible bending part on both outer sides of the heat shrinkable sleeve.
[0007] Preferably, the thickness of the high-conductivity copper sheet is between 0.5 mm and 1.5 mm.
[0008] Preferably, the thickness of the high-conductivity copper sheet is 0.1 mm.
[0009] Preferably, a sealing groove is formed at the bottom of the insulating base on the outer side of the terminal insertion hole, and a sealing ring is embedded in the sealing groove.
[0010] The utility model discloses a large current through-wall terminal block, the diameter of the wire-free connection nose of the circuit wall panel inner side passes through the terminal through hole of the insulating base and is fixed to the top of the insulating base, and does not need to be connected through the connecting end piece and the cold-pressed terminal, thereby avoiding the situation that the internal fixing screws on the inner side of the circuit wall panel are prone to rust due to long-term use, thereby causing a short circuit, or the situation that the internal fixing screws are not tightened can also cause poor contact, and the circuit wall panel needs to be disassembled and the connecting screws are tightened again or replaced, which is not convenient for maintenance and has high manufacturing costs. In addition, it also avoids the cold-pressed terminal being exposed on the inner side of the circuit wall panel, which is prone to affecting the surrounding components due to high voltage.
[0011] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a structural diagram of an existing through-the-wall terminal block connection station from one angle;
[0013] Figure 2 This is a structural diagram of the existing through-the-wall terminal block connection station from another angle;
[0014] Figure 3 for Figure 2 Exploded view of
[0015] Figure 4 This is a structural diagram of a large current through-the-wall terminal block of the utility model from one angle;
[0016] Figure 5 for Figure 4 Exploded view of
[0017] Figure 6 This is a structural diagram of the high-current through-wall terminal block of the utility model from another angle;
[0018] Figure 7 This is a structural diagram of the insulating base of the high-current through-wall terminal block of the utility model from one angle;
[0019] Figure 8 This is a partial exploded view of the wire-free connection nose of the high-current through-wall terminal block of the utility model;
[0020] Figure 9 This is a partial enlarged view of one angle of the nose body of the high-current through-wall terminal block of the utility model. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] refer to Figures 4 to 9 The high-current through-wall terminal block of the present invention includes a wire-free connection nose 100, an insulating base 200, a first fixing screw 300, a first fixing nut 400 and a second fixing screw 500.
[0023] The wire-free connection nose 100 comprises a nose body 10 and an insulating protective cover 20. The nose body 10 comprises multiple long, overlapping, high-conductivity copper sheets 11. The upper and lower ends of these sheets 11 are affixed to each other to form a first mounting end 111 and a second mounting end 112. The second mounting end 112 defines a second mounting hole 1121. The upper end of the first mounting end 111 is bent horizontally to form a connecting end plate 1111. This connecting end plate 1111 defines a connecting hole extending vertically through it (not shown). A fixed end block 1113 protrudes downward from the edge of the connecting end plate 1111. This fixed end block 1113 defines an end block insertion hole 1114. The nose body 10 forms a flexible curved portion 113 between the first and second mounting ends 111. The protective cover 20 is positioned over the flexible curved portion 113. In this embodiment, the upper and lower ends of the plurality of high-conductivity copper sheets 11 are welded to each other to form the first mounting end portion 111 and the second mounting end portion 112 .
[0024] The top of the insulating base 200 is provided with a mounting boss 220 protruding upward, and the middle of the top of the mounting boss 220 is recessed downward to form a nut receiving groove 221 that matches the shape and size of the nut of the first fixing screw 300. The side wall of the mounting boss 220 is provided with an end block fixing screw hole (not shown in the figure). The insulating base 200 is provided with a terminal insertion hole 210 on the outer side of the mounting boss 220. The lower end of the first mounting end portion 111 is inserted into the terminal insertion hole 210. The first fixing screw 300 passes upward through the connecting through hole and is screwed and fixed with the first fixing nut 400. The nut of the first fixing screw 300 is placed in the nut receiving groove 221. The fixing end block 1113 abuts against the side wall of the mounting boss 220. The second fixing screw 500 passes through the end block insertion hole 1114 and is screwed and inserted into the end block fixing screw hole, thereby fixing the connecting end plate 1111 to the mounting boss 220. A sealing groove 230 is formed at the bottom of the insulating base 200 outside the terminal insertion hole 210 , and a sealing ring 240 is embedded in the sealing groove 230 .
[0025] Specifically, the protective cover 20 includes an insulating heat shrinkable tube 21 and two insulating wear-resistant tubes 22. The heat shrinkable tube 21 is sleeved outside the middle of the flexible bending portion 113, and the two wear-resistant tubes 22 are respectively sleeved outside the flexible bending portion 113 on both outer sides of the heat shrinkable tube 21.
[0026] Preferably, the thickness of the high-conductivity copper sheet 11 is between 0.5 mm and 1.5 mm. In this embodiment, the thickness of the high-conductivity copper sheet is 0.1 mm.
[0027] When the high-current through-wall terminal block of the present invention is in use, the insulating seat 200 is installed in the mounting hole of the circuit wallboard. When it is necessary to connect components on the outside of the circuit wallboard, the first fixing nut 400 is unscrewed, the wire is tightened by the cold-pressed terminal, and the first fixing screw 300 is passed through the mounting hole of the cold-pressed end piece, and then the first fixing nut is tightened again.
[0028] The utility model discloses a large current through-wall terminal block, the diameter of the wire-free connection nose of the circuit wall panel inner side passes through the terminal through hole of the insulating base and is fixed to the top of the insulating base, and does not need to be connected through the connecting end piece and the cold-pressed terminal, thereby avoiding the situation that the internal fixing screws on the inner side of the circuit wall panel are prone to rust due to long-term use, thereby causing a short circuit, or the situation that the internal fixing screws are not tightened can also cause poor contact, and the circuit wall panel needs to be disassembled and the connecting screws are tightened again or replaced, which is not convenient for maintenance and has high manufacturing costs. In addition, it also avoids the cold-pressed terminal being exposed on the inner side of the circuit wall panel, which is prone to affecting the surrounding components due to high voltage.
[0029] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the embodiments.
Claims
1. A high-current through-the-wall terminal block, characterized by: It includes a wire-free connection nose, an insulating base, a first fixing screw, a first fixing nut and a second fixing screw. The wire-free connection nose includes a nose body and an insulating protective jacket. The nose body includes multiple long, sheet-like high-conductivity copper sheets that are in contact with each other and stacked. The upper and lower ends of the multiple high-conductivity copper sheets are respectively fitted and fixed to each other to form a first mounting end and a second mounting end. The upper end of the first mounting end is bent horizontally to form a connecting end plate. The connecting end plate is provided with a connecting through hole that passes through itself from top to bottom. A fixed end block is protruding downward from the edge of the connecting end plate. An end block jack is provided on the fixed end block. The nose body forms a flexible bending portion between the first mounting end and the second mounting end. The protective jacket is sleeved outside the flexible bending portion. The top of the insulating base is provided with a mounting boss protruding upward, and the middle of the top of the mounting boss is recessed downward to form a nut receiving groove matching the shape and size of the nut of the first fixing screw. The side wall of the mounting boss is provided with an end block fixing screw hole, and the insulating base is provided with a terminal insertion hole on the outer side of the mounting boss, and the lower end of the first mounting end portion is inserted into the terminal insertion hole, and the first fixing screw passes upward through the connecting through hole and is screwed and fixedly connected with the first fixing nut, and the nut of the first fixing screw is placed in the nut receiving groove, and the fixed end block abuts against the side wall of the mounting boss, and the second fixing screw passes through the end block insertion hole and is screwed and inserted into the end block fixing screw hole, thereby fixing the connecting end plate to the mounting boss.
2. The high-current through-wall terminal block according to claim 1, characterized in that: A second end mounting hole is formed on the second mounting end.
3. The high-current through-wall terminal block according to claim 1, characterized in that: The protective outer sleeve includes an insulating heat shrinkable sleeve and two insulating wear-resistant sleeves. The heat shrinkable sleeve is sleeved outside the middle of the flexible bending part, and the two wear-resistant sleeves are respectively sleeved outside the flexible bending part on both outer sides of the heat shrinkable sleeve.
4. The high-current through-wall terminal block according to claim 1, characterized in that: The thickness of the high-conductivity copper sheet is between 0.5 mm and 1.5 mm.
5. The high-current through-wall terminal block according to claim 4, characterized in that: The thickness of the high-conductivity copper sheet is 0.1 mm.
6. The high-current through-wall terminal block according to claim 1, characterized in that: A sealing groove is formed at the bottom of the insulating base on the outer side of the terminal insertion hole, and a sealing ring is embedded in the sealing groove.