A reverse insertion preventing connector
By designing an anti-reverse insertion connector, utilizing a pin connector, a limit block, and a snap-fit structure, the problem of reverse insertion of traditional connectors is solved, achieving a stable and safe power connection and improving the stability and safety of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU HUI AN TENG ELECTRONICS CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional connectors are prone to reverse insertion due to misoperation, leading to poor contact, short circuits, and safety accidents. They are also prone to loosening after prolonged use, resulting in poor contact.
A reverse-insertion connector was designed. By setting up a pin connector, a limit block and a positioning rod, the insertion direction is ensured to be unique. Combined with a snap-fit and locking mechanism, a stable and safe power connection is achieved.
It effectively prevents reverse insertion, improves connection stability and safety, ensures connection accuracy, avoids loosening and detachment, and enhances ease of use.
Smart Images

Figure CN224458819U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a reverse-insertion prevention connector. Background Technology
[0002] In the fields of electronic devices, power connectors, and communication interfaces, the reliability and safety of connectors are crucial. Traditional connector designs typically employ symmetrical or simple polarity structures, making it easy for users to accidentally insert them in the wrong direction, leading to poor contact, short circuits, equipment damage, or even safety accidents. Currently, household appliances use an increasing variety of connectors with a wider range of applications. However, reverse insertion is a frequent occurrence during connection, which can easily damage electrical equipment. Furthermore, the connectors are prone to loosening after prolonged use and heating, resulting in poor contact. Therefore, we have redesigned a reverse-insertion-proof connector. Utility Model Content
[0003] The purpose of this utility model is to provide a reverse-plug connector.
[0004] To solve the above technical problems, this utility model provides the following technical solution: an anti-reverse insertion connector, comprising a first insertion plate, a pin connector fixedly installed on one side of the top surface of the first insertion plate, an electrode connector fixedly installed on one side of the top surface of the pin connector, a front limiting block fixedly installed on one side of the pin connector, a reverse limiting block fixedly installed on the side of the pin connector away from the front limiting block, a positioning rod fixedly connected to one side of the bottom surface of the first insertion plate, a second insertion plate detachably installed on one side of the top surface of the first insertion plate, an insertion groove formed inside the second insertion plate, a reverse limiting groove formed on one side of the inner wall of the insertion groove, a front limiting groove formed on the side of the insertion groove away from the reverse limiting groove, an electrode connecting groove formed on the inner bottom surface of the insertion groove, and a positioning slot hole formed on one side of the top surface of the second insertion plate.
[0005] Preferably, a first power connection plate is fixedly connected to one side surface of the first plug-in plate, a first power connection line is fixedly connected to the top side of the first power connection plate, a second power connection plate is fixedly connected to the bottom side surface of the second plug-in plate, and a second power connection line is fixedly connected to the top side of the second power connection plate.
[0006] Preferably, the connection relationship between the pin connector and the insertion slot is a pin connection; the positions of the reverse limiting slot and the reverse limiting block correspond one-to-one; the connection relationship between the reverse limiting slot and the reverse limiting block is a movable snap-fit; the positions of the front limiting slot and the front limiting block correspond one-to-one; the connection relationship between the front limiting slot and the front limiting block is a movable snap-fit; and the number of reverse limiting slots is greater than the number of front limiting slots.
[0007] Preferably, the positions of the plug slot and the electrode connector are in one-to-one correspondence, the connection relationship between the plug slot and the electrode connector is a power pin connection, the positions of the positioning slot and the positioning rod are in one-to-one correspondence, and the connection relationship between the positioning slot and the positioning rod is a pin connection.
[0008] Preferably, a rotating shaft is rotatably connected to one side surface of the first connector plate, a snap cover is fixedly connected to one side of the rotating shaft, a snap claw is fixedly connected to the top of one side of the snap cover, a first locking snap groove is formed on one side surface of the snap claw, a snap connection groove is formed on the front side of one side of the second connector plate, a second locking snap groove is formed on the bottom surface of the inner side of the snap connection groove, a sliding limiting groove is formed on the side surface of the second connector plate near the snap connection groove, a sliding limiting rail is fixedly installed on the inner wall of one side of the sliding limiting groove, a sliding adjusting plate is slidably connected to one side surface of the sliding limiting rail, a pin is fixedly connected to the top surface of one side of the sliding adjusting plate, and a friction block is fixedly connected to one side of the front side of the sliding adjusting plate.
[0009] Preferably, the positions of the first locking buckle groove and the second locking buckle groove correspond one-to-one, the cross-sectional areas of the first locking buckle groove and the second locking buckle groove are the same, the sliding adjustment plate is located inside the sliding limiting groove, the connection between the sliding adjustment plate and the sliding limiting rail is a sliding connection, the second locking buckle groove passes through the interior of the sliding limiting groove, the connection between the pin rod and the first locking buckle groove is a pin connection, and the connection between the buckle connection groove and the buckle claw is a movable snap-fit.
[0010] Compared with related technologies, the anti-reverse insertion connector provided by this utility model has the following beneficial effects:
[0011] 1. This utility model provides an anti-reverse insertion plug. By setting a pin connector head to directly insert into the insertion groove, the insertion between the electrode connector head and the electrode connection groove is realized to achieve electrical connection. The positions of the reverse limiting groove and the reverse limiting block are locked one by one, and the positions of the front limiting block and the front limiting groove are locked one by one. The number of front limiting blocks and the reverse limiting blocks are different, thereby preventing the problem of reverse insertion. Only one-way insertion operation can be performed, which improves the stability and safety of the connection between the first insertion plate and the second insertion plate. The one-to-one correspondence between the positioning rod and the positioning slot hole limits the connection between the first insertion plate and the second insertion plate, further ensuring the connection accuracy of the first insertion plate and the second insertion plate, and also reflecting the convenience of insertion of the device.
[0012] 2. This utility model provides an anti-reverse insertion plug. After the first and second insertion plates are inserted, the rotating shaft controls the latching claw to directly latch into the inside of the latching connection groove. At this time, the first and second locking latching grooves are directly aligned. By sliding the sliding adjustment plate on the sliding limit rail, the position of the pin rod can be directly adjusted. The pin rod is inserted into the inside of the second and first locking latching grooves. The locking operation between the pin rod and the latching claw further ensures the stability of the connection between the latching cover and the second insertion plate, preventing the first and second insertion plates from falling off, and further improving the safety of the device's connection. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a schematic diagram of the internal structure of the second connector plate of this utility model;
[0015] Figure 3 This is a schematic diagram of the disassembled front and side views of the device of this utility model;
[0016] Figure 4 This utility model Figure 3 A magnified structural diagram at point A.
[0017] The following are the labeling elements in the diagram: 1. First connector plate; 2. Pin connector; 3. Electrode connector; 4. Front limiting block; 5. Back limiting block; 6. Positioning rod; 7. Second connector plate; 8. Connecting slot; 9. Back limiting slot; 10. Front limiting slot; 11. Electrode connection slot; 12. Positioning slot hole; 13. First power connection plate; 14. First power connection line; 15. Second power connection plate; 16. Second power connection line; 17. Rotating shaft; 18. Snap cover; 19. Snap claw; 20. First locking snap slot; 21. Snap connection slot; 22. Second locking snap slot; 23. Sliding limiting slot; 24. Sliding limiting rail; 25. Sliding adjusting plate; 26. Pin rod; 27. Friction block. Detailed Implementation
[0018] Example 1:
[0019] Please see Figure 1-4 This utility model provides a technical solution: an anti-reverse insertion connector, including a first insertion plate 1, a pin connector 2 fixedly installed on one side of the top surface of the first insertion plate 1, an electrode connector 3 fixedly installed on one side of the top surface of the pin connector 2, a front limiting block 4 fixedly installed on one side of the pin connector 2, a reverse limiting block 5 fixedly installed on the side of the pin connector 2 away from the front limiting block 4, a positioning rod 6 fixedly connected to one side of the bottom surface of the first insertion plate 1, a second insertion plate 7 detachably installed on one side of the top surface of the first insertion plate 1, an insertion groove 8 opened inside the second insertion plate 7, a reverse limiting groove 9 opened on one side of the inner wall of the insertion groove 8, a front limiting groove 10 opened on the side of the insertion groove 8 away from the reverse limiting groove 9, an electrode connection groove 11 opened on the inner bottom surface of the insertion groove 8, a positioning slot 12 opened on one side of the top surface of the second insertion plate 7, and a first electrode connection 3 fixedly connected to one side of the first insertion plate 1. The first power connection plate 13 has a first power connection line 14 fixedly connected to one side top. The second power connection plate 7 has a second power connection plate 15 fixedly connected to one side bottom surface. The second power connection plate 15 has a second power connection line 16 fixedly connected to one side top. The connection relationship between the pin connector 2 and the plug slot 8 is a pin connection. The positions of the reverse limiting groove 9 and the reverse limiting block 5 are one-to-one, and the connection relationship between the reverse limiting groove 9 and the reverse limiting block 5 is a movable snap connection. The positions of the front limiting groove 10 and the front limiting block 4 are one-to-one, and the connection relationship between the front limiting groove 10 and the front limiting block 4 is a movable snap connection. The number of reverse limiting grooves 9 is greater than the number of front limiting grooves 10. The positions of the plug slot 8 and the electrode connector 3 are one-to-one, and the connection relationship between the plug slot 8 and the electrode connector 3 is a power pin connection. The positions of the positioning slot hole 12 and the positioning rod 6 are one-to-one, and the connection relationship between the positioning slot hole 12 and the positioning rod 6 is a pin connection.
[0020] In the implementation plan, the plug connector 2 is directly inserted into the insertion slot 8, and the electrode connector 3 and electrode connection slot 11 are connected to achieve electrical connection. The positions of the reverse limiting slot 9 and the reverse limiting block 5 are locked one by one, and the positions of the front limiting block 4 and the front limiting slot 10 are locked one by one. The number of front limiting blocks 4 and the reverse limiting blocks 5 are different, thereby preventing the problem of reverse insertion. Only one-way insertion operation can be achieved, which improves the stability and safety of the connection between the first insertion plate 1 and the second insertion plate 7. The position of the positioning rod 6 and the positioning slot hole 12 are one-to-one, which limits the connection between the first insertion plate 1 and the second insertion plate 7, further ensuring the connection accuracy of the first insertion plate 1 and the second insertion plate 7, and also reflecting the convenience of the device's insertion.
[0021] Example 2:
[0022] Please see Figure 1-4 This utility model provides a technical solution: an anti-reverse insertion connector, comprising a first insertion plate 1 with a rotating shaft 17 rotatably connected to one side surface, a snap-fit cover 18 fixedly connected to one side of the rotating shaft 17, a snap-fit claw 19 fixedly connected to the top of one side of the snap-fit cover 18, a first locking snap-fit groove 20 formed on one side surface of the snap-fit claw 19, a snap-fit connection groove 21 formed on the front side of one side of the second insertion plate 7, a second locking snap-fit groove 22 formed on the bottom surface of the inner side of the snap-fit connection groove 21, a sliding limiting groove 23 formed on the side surface of the second insertion plate 7 near the snap-fit connection groove 21, a sliding limiting rail 24 fixedly installed on the inner wall of one side of the sliding limiting groove 23, and a sliding limiting rail 24 slidably connected to one side surface of the sliding limiting rail 24. A sliding adjustment disc 25 is attached. A pin rod 26 is fixedly connected to the top surface of one side of the sliding adjustment disc 25. A friction block 27 is fixedly connected to the front side of the sliding adjustment disc 25. The positions of the first locking buckle groove 20 and the second locking buckle groove 22 correspond one-to-one. The cross-sectional areas of the first locking buckle groove 20 and the second locking buckle groove 22 are the same. The sliding adjustment disc 25 is located inside the sliding limit groove 23. The connection relationship between the sliding adjustment disc 25 and the sliding limit rail 24 is a sliding connection. The second locking buckle groove 22 penetrates the interior of the sliding limit groove 23. The connection relationship between the pin rod 26 and the first locking buckle groove 20 is a pin connection. The connection relationship between the buckle connection groove 21 and the buckle claw 19 is a movable snap-fit.
[0023] In the implementation scheme, after the first insertion plate 1 and the second insertion plate 7 are inserted, the rotating shaft 17 controls the locking claw 19 to directly lock into the inside of the locking connection groove 21. At this time, the first locking locking groove 20 and the second locking locking groove 22 are directly aligned. By using the sliding adjustment plate 25 to slide on the sliding limit rail 24, the position of the pin 26 can be directly adjusted. The pin 26 is inserted into the inside of the second locking locking groove 22 and the first locking locking groove 20. The locking operation between the pin 26 and the locking claw 19 further ensures the stability of the connection between the locking cover 18 and the second insertion plate 7, avoids the phenomenon of the first insertion plate 1 and the second insertion plate 7 falling off, and further improves the safety of the device connection.
[0024] Working principle:
[0025] By setting the pin connector 2 to be directly inserted into the insertion slot 8, and the insertion between the electrode connector 3 and the electrode connection slot 11, the power connection is realized. The positions of the reverse limiting slot 9 and the reverse limiting block 5 are locked one by one, and the positions of the front limiting block 4 and the front limiting slot 10 are locked one by one. The number of front limiting blocks 4 and the reverse limiting blocks 5 are different, thereby preventing the problem of reverse insertion. Only one-way insertion operation can be realized, which improves the stability and safety of the connection between the first insertion plate 1 and the second insertion plate 7. By the one-to-one correspondence between the positioning rod 6 and the positioning slot hole 12, the connection between the first insertion plate 1 and the second insertion plate 7 is limited, further ensuring the connection accuracy of the first insertion plate 1 and the second insertion plate 7, and also reflecting the convenience of the device's insertion.
[0026] After the first connector 1 and the second connector 7 are connected, the rotating shaft 17 controls the locking claw 19 to directly engage with the inside of the locking connection groove 21. At this time, the first locking groove 20 and the second locking groove 22 are directly aligned. By sliding the sliding adjustment plate 25 on the sliding limit rail 24, the position of the pin 26 can be directly adjusted. The pin 26 is then inserted into the inside of the second locking groove 22 and the first locking groove 20. The locking operation between the pin 26 and the locking claw 19 further ensures the stability of the connection between the locking cover 18 and the second connector 7, preventing the first connector 1 and the second connector 7 from falling off, and further improving the safety of the device's connection.
Claims
1. A reverse insertion preventing connector, comprising a first connector panel (1), a latch connector (2) is fixedly installed on one side top surface of the first connector panel (1), characterized in that: An electrode connector (3) is fixedly installed on one side of the top surface of the pin connector (2). A front limiting block (4) is fixedly installed on one side of the pin connector (2). A back limiting block (5) is fixedly installed on the side of the pin connector (2) away from the front limiting block (4). A positioning rod (6) is fixedly connected to one side of the bottom surface of the first plug plate (1). A second plug plate (7) is detachably installed on one side of the top surface of the first plug plate (1). A plug groove (8) is opened inside the second plug plate (7). A back limiting groove (9) is opened on one side of the inner wall of the plug groove (8). A front limiting groove (10) is opened on the side of the plug groove (8) away from the back limiting groove (9). An electrode connection groove (11) is opened on the bottom surface of the plug groove (8). A positioning slot hole (12) is opened on one side of the top surface of the second plug plate (7).
2. A reverse insertion resistant connector plug according to claim 1, wherein, A first power connection plate (13) is fixedly connected to one side surface of the first plug-in plate (1), a first power connection line (14) is fixedly connected to the top side of the first power connection plate (13), a second power connection plate (15) is fixedly connected to the bottom side surface of the second plug-in plate (7), and a second power connection line (16) is fixedly connected to the top side of the second power connection plate (15).
3. The anti-reverse insertion connector plug of claim 1, wherein, The connection relationship between the pin connector (2) and the insertion slot (8) is a pin connection. The positions of the reverse limiting slot (9) and the reverse limiting block (5) are one-to-one. The connection relationship between the reverse limiting slot (9) and the reverse limiting block (5) is a movable snap-fit. The positions of the front limiting slot (10) and the front limiting block (4) are one-to-one. The connection relationship between the front limiting slot (10) and the front limiting block (4) is a movable snap-fit. The number of reverse limiting slots (9) is greater than the number of front limiting slots (10).
4. The anti-reverse insertion connector plug of claim 1, wherein, The positions of the plug slot (8) and the electrode connector (3) are one-to-one, and the connection relationship between the plug slot (8) and the electrode connector (3) is a power pin connection. The positions of the positioning slot (12) and the positioning rod (6) are one-to-one, and the connection relationship between the positioning slot (12) and the positioning rod (6) is a pin connection.
5. The anti-reverse insertion connector plug of claim 1, wherein, A rotating shaft (17) is rotatably connected to one side surface of the first connector plate (1). A snap cover (18) is fixedly connected to one side of the rotating shaft (17). A snap claw (19) is fixedly connected to the top of one side of the snap cover (18). A first locking snap groove (20) is formed on one side surface of the snap claw (19). A snap connection groove (21) is formed on the front side of one side of the second connector plate (7). A second locking snap groove is formed on the bottom surface of the inner part of the snap connection groove (21). (22) A sliding limiting groove (23) is provided on the side surface of the second plug-in plate (7) near the snap-fit connection groove (21). A sliding limiting rail (24) is fixedly installed on the inner wall of one side of the sliding limiting groove (23). A sliding adjusting plate (25) is slidably connected to one side surface of the sliding limiting rail (24). A pin rod (26) is fixedly connected to the top surface of one side of the sliding adjusting plate (25). A friction block (27) is fixedly connected to one side of the front of the sliding adjusting plate (25).
6. A reverse insertion resistant connector plug according to claim 5, wherein, The positions of the first locking buckle groove (20) and the second locking buckle groove (22) correspond one-to-one. The cross-sectional areas of the first locking buckle groove (20) and the second locking buckle groove (22) are the same. The sliding adjustment plate (25) is located inside the sliding limit groove (23). The connection relationship between the sliding adjustment plate (25) and the sliding limit rail (24) is a sliding connection. The second locking buckle groove (22) penetrates the interior of the sliding limit groove (23). The connection relationship between the pin rod (26) and the first locking buckle groove (20) is a pin connection. The connection relationship between the buckle connection groove (21) and the buckle claw (19) is a movable snap-fit.