A terminal block with mistake-proof insertion structure
By incorporating labels, pointers, toggle switches, and limit switches on the terminal block, the lack of indicator functions in the terminal block is resolved, ensuring accurate and stable wiring while providing dust protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NAN TONG HUAGUAN ELECTRIC CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-10
AI Technical Summary
The existing terminal blocks lack indicator functions, resulting in complex wiring harnesses that are difficult to quickly identify different wire connectors, which is especially troublesome for novice workers.
A terminal block with an anti-misinsertion structure was designed. By setting labels, pressure blocks and pointers on both sides of the middle plate, the pointers indicate the wiring ports, and the cooperation of the toggle block and the locking lever ensures that the terminal is inserted into the correct position. The use of limit blocks and baffles prevents loosening and falling off.
It enables clear identification of the wiring ports on the terminal block, prevents incorrect terminal insertion, improves the stability and convenience of wiring, and also has a dust protection function.
Smart Images
Figure CN224481227U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of terminal block technology, specifically a terminal block with an anti-misinsertion structure. Background Technology
[0002] Terminal blocks are common connection accessories in the electrical field. They can connect multiple circuits at the same time and clearly distinguish between two sets of connected switches. The metal wire with the outer rubber layer removed is wrapped around the connection point and locked with bolts or other objects. Power can be connected in a timely manner and disconnected very easily.
[0003] Although the terminals on both sides of the terminal block are mostly arranged symmetrically, with a partition in the middle, they lack a prompting function. If the wiring harness is complicated, it is easy to connect the wrong wires during repair and maintenance, making it difficult to ensure the accuracy of wiring. If you are a novice worker, you will also not be able to quickly figure out the different wire connectors.
[0004] Now, a novel terminal block with a mis-insertion prevention structure is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a terminal block with an anti-misinsertion structure to solve the problem of inconvenient identification of terminal interfaces mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a terminal block with an anti-misinsertion structure, comprising a plate and an intermediate plate. The intermediate plate is longitudinally fixed at the center of the front end of the plate, and a lower limit block is fixed between the bottom of the intermediate plate and the plate. An upper limit block is fixed between the top of the intermediate plate and the plate. Labels are fixed on both sides of the intermediate plate. Fixing blocks are welded to both sides of the intermediate plate, and a partition block is fixed between the side of the fixing block and the plate. A cover plate is movably hinged at the center of the side of the fixing block, and a pressure block is fixed at the center of the side of the cover plate. A protrusion is fixed at the center of the front of the fixing block, and a pointer is movably sleeved on the outside of the protrusion. A rectangular groove is formed between the partition block and the fixing block, and a wiring port is provided at the rear center of the rectangular groove. A wire groove is provided on the side of the wiring port, and a fastening bolt is threaded into the inside of the wiring port.
[0007] Preferably, the outer surface of the fastening bolt matches the internal thread of the wiring port, and the pressure block fits against the fastening bolt and is embedded in the wiring port.
[0008] Preferably, two sets of slots are provided at the center of the rectangular groove, and a groove is formed between the slots and the rectangular groove. A lever is movably connected to the front surface of the slot, and a locking rod is fixed behind the lever. The lever is attached to the upper and lower parts of the right side of the flip-up cover.
[0009] Preferably, the lever moves up and down along the front of the slot, and the locking rod moves vertically into and out of the slot.
[0010] Preferably, the upper limit block has a through groove arranged longitudinally inside, and a baffle is movably inserted into the through groove. A first anti-disengagement rod is fixed horizontally below the baffle, and a second anti-disengagement rod is fixed horizontally above the baffle. Holes are provided at the four corners inside the baffle, and positioning bolts are threaded to both sides of the front end of the upper limit block.
[0011] Preferably, the positioning bolt passes through the upper limit block and the hole, and the anti-detachment rod is attached to the lower limit block.
[0012] Compared with the prior art, the beneficial effects of this utility model are: the terminal block with anti-misinsertion structure not only makes it easy to distinguish the wiring ports and facilitates wiring, but also provides dust protection;
[0013] (1) A pointer is movably sleeved on the outside of the protrusion, and each label on both sides of the middle plate has a corresponding rectangular groove. The surface of each pressure block is also equipped with a pointer through the protrusion. This not only prevents the hinged partition from opening again from the rectangular groove, but also indicates that there is a wiring port here. The pressure block is pressed on the top of the fastening bolt for fixing, which not only prevents the wiring terminal from being inserted incorrectly, but also improves the stability of the wiring.
[0014] (2) By fixing a lever behind the lever, rotating the pointer, lifting the cover, and then moving the lever along the symmetrical slot, the lever connected to the lever is pushed out of the slot to support the lifted cover. Then, the lever passes through the wire groove to fix the wire harness in the wiring port, and then screws in the fastening bolt to lock it. After closing the cover, it is pressed to prevent it from loosening. It can also be used to press the cover with the rotation of the pointer.
[0015] (3) After completing the wiring task of each terminal by inserting the baffle in the through slot, the baffle is vertically lowered along the through slot inside the upper limit block. After aligning with the holes at the two locations above, the positioning bolt is screwed in to limit the position, so that the first anti-detachment rod is attached to the lower limit block, while the second anti-detachment rod overlaps the surface of the through slot, which not only protects the terminal block, but also facilitates opening and closing for wiring and disassembly. Attached Figure Description
[0016] Figure 1 This is a front view cross-sectional structural diagram of the present invention;
[0017] Figure 2 This is a front view schematic diagram of the rectangular groove structure of this utility model;
[0018] Figure 3 This is a front view schematic diagram of the cover plate structure of this utility model;
[0019] Figure 4This is a front view schematic diagram of the baffle structure of this utility model;
[0020] In the diagram: 1. Plate; 2. Partition; 3. Lower limit block; 4. Middle plate; 5. Label; 6. Rectangular groove; 7. Wire groove; 8. Fastening bolt; 9. Connection port; 10. Pointer; 11. Slot; 12. Cover plate; 13. Anti-detachment rod one; 14. Upper limit block; 15. Baffle plate; 16. Hole; 17. Anti-detachment rod two; 18. Through groove; 19. Positioning bolt; 20. Locking rod; 21. Pulling block; 22. Pressing block; 23. Protrusion; 24. Fixing block; 25. Slot. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-4 An embodiment of this utility model provides: a terminal block with an anti-misinsertion structure, including a plate 1 and an intermediate plate 4. The intermediate plate 4 is longitudinally fixed at the center of the front end of the plate 1, and a lower limit block 3 is fixed between the bottom of the intermediate plate 4 and the plate 1. An upper limit block 14 is fixed between the top of the intermediate plate 4 and the plate 1. Labels 5 are fixed on both sides of the intermediate plate 4. Fixing blocks 24 are welded on both sides of the intermediate plate 4. A partition block 2 is fixed between the side of the fixing block 24 and the plate 1. A cover plate 12 is movably hinged at the center of the side of the fixing block 24. A pressure block 22 is fixed at the center of the side of the cover plate 12. A protrusion 23 is fixed at the center of the front of the fixing block 24. A pointer 10 is movably sleeved on the outside of the protrusion 23. A rectangular groove 6 is formed between the partition block 2 and the fixing block 24. A wiring port 9 is provided at the center of the rear of the rectangular groove 6. A wire groove 7 is provided on the side of the wiring port 9. A fastening bolt 8 is threadedly connected inside the wiring port 9.
[0023] The outer surface of the fastening bolt 8 matches the internal thread of the wiring port 9, and the pressure block 22 fits against the fastening bolt 8 and is embedded in the wiring port 9;
[0024] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, each label 5 on both sides of the middle plate 4 has a corresponding rectangular groove 6, and the surface of each pressure block 22 is also equipped with a pointer 10 through the protrusion 23, which not only prevents the hinged partition 2 from opening again from the rectangular groove 6, but also indicates that there is a wiring port 9 here. The pressure block 22 presses on the top of the fastening bolt 8 for fixing and to prevent the wiring terminals from being inserted incorrectly.
[0025] Two sets of slots 11 are provided at the center of the rectangular groove 6, and a slot 25 is formed between the slot 11 and the rectangular groove 6. A lever 21 is movably connected to the front surface of the slot 11, and a locking rod 20 is fixed behind the lever 21. The lever 21 is attached to the upper and lower parts of the right side of the flip-up cover 12. The lever 21 moves up and down along the front of the slot 11, and the locking rod 20 moves vertically into and out of the slot 25 and the slot 11.
[0026] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, rotate pointer 10 to lift cover 12, then move lever 21 along symmetrical slot 11 to push lever 20 connected to lever 21 out of slot 25 to support cover 12 after lifting. Then pass through wire groove 7 to fix wire harness in wiring port 9, then screw in fastening bolt 8 to lock, close cover 12 and press to prevent it from loosening.
[0027] The upper limit block 14 has a through groove 18 arranged longitudinally inside, and a baffle 15 is movably inserted into the through groove 18. A first anti-detachment rod 13 is fixed horizontally below the baffle 15, and a second anti-detachment rod 17 is fixed horizontally above the baffle 15. Holes 16 are provided at the four corners inside the baffle 15. Positioning bolts 19 are threaded to both sides of the front end of the upper limit block 14. The positioning bolts 19 pass through the upper limit block 14 and the holes 16. The first anti-detachment rod 13 is attached to the lower limit block 3.
[0028] Specifically, such as Figure 1 and Figure 4 As shown, after completing the wiring tasks of each terminal, the baffle 15 is vertically lowered along the through groove 18 inside the upper limit block 14, and the positioning bolt 19 is screwed in after aligning with the holes 16 at the two locations above to limit the position, so that the first anti-detachment rod 13 fits against the lower limit block 3, while the second anti-detachment rod 17 overlaps the surface of the through groove 18, protecting the terminal block and also preventing dust and water.
[0029] Working principle: When using this utility model, firstly, each label 5 on both sides of the middle plate 4 has a corresponding rectangular groove 6. The surface of each pressure block 22 is also equipped with a pointer 10 through the protrusion 23, which not only prevents the hinged partition 2 from opening again from the rectangular groove 6, but also indicates that there is a wiring port 9 here. Rotate the pointer 10 to lift the cover 12. Then, move the lever 21 along the symmetrical slot 11 to push the locking rod 20 connected to the lever 21 out of the slot 25 to support the lifted cover 12. Then, pass through the wire groove 7 to fix the wire harness in the wiring port 9. Then, screw in the fastening bolt 8 to lock it. After closing the cover 12, press it to complete the wiring task of each terminal. Then, vertically lower the baffle 15 along the through groove 18 inside the upper limit block 14. Align it with the holes 16 at the two places above and screw in the positioning bolt 19 to limit it. This makes the anti-detachment rod 13 fit on the lower limit block 3, while the anti-detachment rod 27 overlaps the surface of the through groove 18 for protection.
[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A terminal block with an anti-misinsertion structure, comprising a plate (1) and an intermediate plate (4), characterized in that: A middle plate (4) is longitudinally fixed at the center of the front end of the plate (1), and a lower limit block (3) is fixed between the bottom of the middle plate (4) and the plate (1). An upper limit block (14) is fixed between the top of the middle plate (4) and the plate (1). Labels (5) are fixed on both sides of the middle plate (4). Fixing blocks (24) are welded to both sides of the middle plate (4), and a partition block (2) is fixed between the side of the fixing block (24) and the plate (1). The center of the side of the fixing block (24) is... A cover plate (12) is hinged to the side, and a pressure block (22) is fixed at the center of the side of the cover plate (12). A protrusion (23) is fixed at the center of the front of the fixed block (24), and a pointer (10) is movably sleeved on the outside of the protrusion (23). A rectangular groove (6) is formed between the partition block (2) and the fixed block (24), and a wiring port (9) is provided at the center of the rear of the rectangular groove (6). A wire groove (7) is provided on the side of the wiring port (9), and a fastening bolt (8) is threaded inside the wiring port (9).
2. A terminal block with an anti-misinsertion structure according to claim 1, characterized in that: The outer surface of the fastening bolt (8) matches the internal thread of the wiring port (9), and the pressure block (22) fits the fastening bolt (8) and is embedded in the wiring port (9).
3. A terminal block with an anti-misinsertion structure according to claim 1, characterized in that: Two sets of slots (11) are provided at the center of the rectangular groove (6), and a slot (25) is formed between the slot (11) and the rectangular groove (6). A lever (21) is movably connected to the front surface of the slot (11), and a locking rod (20) is fixed behind the lever (21). The lever (21) is attached to the upper and lower parts of the right side of the flip-up cover (12).
4. A terminal block with an anti-misinsertion structure according to claim 3, characterized in that: The push block (21) moves up and down along the front of the slot (11), and the lever (20) moves vertically into and out of the slot (25) and the slot (11).
5. A terminal block with an anti-misinsertion structure according to claim 1, characterized in that: The upper limit block (14) has a through groove (18) arranged longitudinally inside, and a baffle (15) is movably inserted in the through groove (18). A first anti-detachment rod (13) is fixed horizontally below the baffle (15), and a second anti-detachment rod (17) is fixed horizontally above the baffle (15). Holes (16) are respectively provided at the four corners inside the baffle (15). Positioning bolts (19) are threadedly connected to both sides of the front end of the upper limit block (14).
6. A terminal block with an anti-misinsertion structure according to claim 5, characterized in that: The positioning bolt (19) passes through the upper limit block (14) and the hole (16), and the anti-detachment rod (13) is attached to the lower limit block (3).