Three-plug self-locking connector
By designing a three-prong self-locking connector and utilizing the cooperation of a sliding groove and a snap-fit plate, the problem of easy pin slippage is solved, achieving stable pin connection and improving the service life of electronic components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN RUNFA CABLE CO LTD
- Filing Date
- 2025-01-03
- Publication Date
- 2026-05-05
AI Technical Summary
The existing plug and pins are directly connected, which makes them prone to slipping due to accidental force, affecting the lifespan of electronic components.
Design a three-pin self-locking connector. By setting a sliding groove and a connecting groove in the housing, and using the cooperation of a sliding plate, a snap-fit plate and a contact spring, the snap-fit plate tilts and clamps the pin after the pin is inserted, preventing the pin from coming out.
It effectively prevents the pins from detaching from the socket, thus improving the lifespan of electronic devices.
Smart Images

Figure CN224204484U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plug technology, specifically a three-prong self-locking connector. Background Technology
[0002] Plugs and sockets are common electrical devices in daily life. Most plugs and sockets currently in use are three-pronged. All household appliances require power cords to connect to the power source. The structure of a power cord includes a wire, a plug, and a connector connected together. The plug and connector are fixed at both ends of the wire. The plug is inserted into the power socket. The appliance has pins, and the connector is directly fitted onto the pins to allow the appliance to receive power.
[0003] In actual use, since the existing connectors and pins are directly connected, the connectors are often prone to slipping off the socket due to accidental force, which greatly affects the lifespan of electronic devices.
[0004] Based on this, the present invention designs a three-prong self-locking connector to solve the above problems. Summary of the Invention
[0005] To achieve the above objectives, the present invention provides the following technical solution: a three-prong self-locking connector, comprising a housing, a socket disposed within the housing, and a pin disposed on the electrical component. The housing has a sliding groove and a connecting groove, the connecting groove being vertically positioned and communicating with both the sliding groove and the socket. A sliding plate is slidably disposed within the sliding groove. A snap-fit plate is placed within the connecting groove, and a connecting rod is fixedly connected to the snap-fit plate. The sliding plate has clearance grooves, and the connecting rod is located within these clearance grooves. Two clearance grooves are correspondingly provided, and two corresponding connecting rods are also provided. The snap-fit plate has a snap-fit interface. A fixing block is fixedly disposed within the sliding groove, and a stop is fixedly disposed on the sliding plate. The system consists of a block and a connecting block, with a connecting rod positioned between the stop block and the connecting block. A contact spring is placed in the sliding groove, with one end of the contact spring abutting against the fixed block and the other end abutting against the stop block. A clearance opening is provided on the outer casing. A push plate is fixedly mounted on the sliding plate, with the push plate positioned in the clearance opening. The snap-fit plate is lower than the height of the connecting groove. When the pin is inserted into the insertion hole and is located in the snap-fit interface, the contact spring abuts against the stop block and moves away from the fixed block, causing the snap-fit plate to be in an inclined state and the snap-fit interface to clamp the pin. When the push plate contacts the side of the clearance opening away from the snap-fit plate, the snap-fit plate is in a vertical state, and the snap-fit interface does not clamp the pin.
[0006] By adopting the above technical solution, after the pin is inserted, the snap-fit plate is in an inclined state. At this time, the snap-fit interface clamps the pin and blocks the pin, thereby reducing the chance of the pin coming out of the socket.
[0007] Preferably, a mounting block is fixedly provided on the stop block, and one end of the abutment spring is sleeved on the mounting block.
[0008] By adopting the above technical solution, the contact spring is installed on the mounting block, which reduces the movement of the contact spring and stabilizes it.
[0009] Preferably, the bottom of the sliding groove is provided with a guide groove, and a guide block is fixedly provided on the stop block, and the guide block slides in the guide groove.
[0010] By adopting the above technical solution, when the sliding plate moves, the guide block slides in the guide groove, reducing the swaying of the sliding plate and stabilizing its movement.
[0011] Preferably, a lever is fixedly provided on the push plate.
[0012] By adopting the above technical solution, when it is necessary to push the push plate, the wave-moving block can easily move the push plate.
[0013] In summary, this application has the following beneficial technical effects: after the pin is inserted, the snap-fit plate is in an inclined state, and the snap-fit interface clamps the pin and blocks the pin, thereby reducing the effect of the pin coming out of the socket. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the outer shell structure in this embodiment;
[0016] Figure 2 This is a schematic diagram of the internal structure of the outer shell in this embodiment;
[0017] Figure 3 This is a schematic diagram of the structure of the snap-fit plate clamping the pins in this embodiment;
[0018] Figure 4 This is a schematic diagram of the installation structure of the sliding plate in this embodiment;
[0019] Figure 5 This is the mounting structure of the abutment spring in this embodiment;
[0020] Figure 6 This is a schematic diagram of the push plate position when the inserter is ready to disengage in this embodiment;
[0021] Figure 7 This is a schematic diagram showing the pin detaching in this embodiment.
[0022] The attached diagram lists the components represented by each number as follows:
[0023] 1. Outer shell; 2. Insertion hole; 3. Sliding groove; 4. Connecting groove; 5. Sliding plate; 6. Snap-fit plate; 7. Connecting rod; 8. Clearance groove; 9. Fixing block; 10. Stop block; 11. Connecting block; 12. Abutment spring; 13. Mounting block; 14. Clearance opening; 15. Push plate; 16. Placement block; 17. Snap-fit interface; 18. Guide groove; 19. Guide block; 20. Pulling block; 21. Pin. Detailed Implementation
[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0025] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.
[0026] Reference Figures 1-7 A three-prong self-locking connector includes a housing 1, a socket 2 disposed in the housing 1, a pin 21 disposed on the electrical component, a sliding groove 3 and a connecting groove 4 disposed in the housing 1, the connecting groove 4 being vertically disposed and communicating with the sliding groove 3 and the socket 2, a sliding plate 5 being slidably disposed in the sliding groove 3, a snap-fit plate 6 being placed in the connecting groove 4, the snap-fit plate 6 being lower than the height of the connecting groove 4, a connecting rod 7 being fixedly connected to the snap-fit plate 6, a clearance groove 8 being disposed on the sliding plate 5, the connecting rod 7 being located in the clearance groove 8, two clearance grooves 8 being disposed correspondingly, and two corresponding connecting rods 7 being disposed, the two connecting rods 7 being located in the clearance grooves 8 respectively so that the sliding plate 5 is located between the two connecting rods 7, and a snap-fit interface 17 being disposed on the snap-fit plate 6;
[0027] Reference Figures 1-7A fixing block 9 is fixedly installed in the sliding groove 3, and the fixing block 9 is located below the sliding plate 5. A stop block 10 and a connecting block 11 are fixedly installed on the sliding plate 5. A connecting rod 7 is located between the stop block 10 and the connecting block 11, and the connecting rod 7 contacts the stop block 10 and the connecting block 11 respectively. An anti-spring 12 is placed in the sliding groove 3. An installation block 13 is fixedly installed on the stop block 10. One end of the anti-spring 12 abuts against the fixing block 9, and the other end abuts against the stop block 10. At the same time, one end of the anti-spring 12 is sleeved on the installation block 13 to reduce the movement of the anti-spring 12 and stabilize the placement of the anti-spring 12. A clearance opening 14 is opened on the outer shell 1. A push plate 15 is fixedly installed on the sliding plate 5 and is located in the clearance opening 14. A placement block 16 is fixedly installed at the bottom of the connecting groove 4, and the lower side of the snap-fit plate 6 contacts the placement block 16.
[0028] Reference Figures 1-7 After the pin 21 enters the socket 2, the pin 21 pushes the snap-fit plate 6 to rotate toward the fixed block 9. There is a gap between the snap-fit plate 6 and the sliding plate 5 to ensure that the snap-fit plate 6 can rotate normally. When the snap-fit plate 6 rotates, the connecting rod 7 abuts against the sliding plate 5 and moves away from the socket 2. The snap-fit plate 6 rotates continuously until the pin 21 can pass through the snap-fit interface 17. When the pin 21 is in the snap-fit interface 17, the abutting spring 12 abuts against the stop block 10 and moves away from the fixed block 9. The stop block 10 pushes the connecting rod 7 to rotate away from the fixed block 9, so that the upper end of the snap-fit plate 6 rotates toward the placement block 16. The snap-fit plate 6 is in an inclined state, so that the snap-fit interface 17 clamps the pin 21 and blocks the pin 21, thereby reducing the effect of the pin 21 coming out of the socket.
[0029] Reference Figures 1-7 When the pin 21 is to be pulled out, push the push plate 15 to move away from the socket 2, which will move the sliding plate 5 and make the connecting block 11 rotate towards the fixed block 9. When the push plate 15 contacts the side of the relief port 14 away from the snap-fit plate 6, the snap-fit plate 6 is in a vertical state and the snap-fit interface 17 no longer clamps the pin 21, thus making it easier for the pin 21 to be removed from the socket 2.
[0030] Reference Figures 1-7 The bottom of the sliding groove 3 is provided with a guide groove 18, and a guide block 19 is fixedly provided on the stop block 10. The guide block 19 slides in the guide groove 18. When the sliding plate 5 moves, the stop block 10 slides in the guide groove 18 to reduce the shaking of the sliding plate 5 and stabilize the movement of the sliding plate 5. A toggle block 20 is fixedly provided on the push plate 15. When it is necessary to push the snap-fit plate 6, the toggle block 20 can be moved to facilitate the movement of the push plate 15.
[0031] The implementation principle of this embodiment is as follows: When the pin 21 is located in the card interface 17, the abutment spring 12 abuts the stop block 10 and moves away from the fixed block 9. The stop block 10 pushes the connecting rod 7 to rotate away from the fixed block 9, thereby causing the upper end of the card plate 6 to rotate towards the placement block 16. The card plate 6 is in an inclined state, so that the card interface 17 clamps the pin 21 and blocks the pin 21, thereby reducing the effect of the pin 21 coming out of the socket.
[0032] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A three-prong self-locking connector, comprising a housing (1), a socket (2) disposed in the housing (1), and a pin (21) disposed on the electrical component, characterized in that: The outer casing (1) has a sliding groove (3) and a connecting groove (4). The connecting groove (4) is vertically arranged and communicates with the sliding groove (3) and the insertion hole (2). A sliding plate (5) is slidably arranged in the sliding groove (3). A snap-fit plate (6) is placed in the connecting groove (4). A connecting rod (7) is fixedly connected to the snap-fit plate (6). A clearance groove (8) is provided on the sliding plate (5). The connecting rod (7) The sliding groove (3) is located in the clearance groove (8), and there are two clearance grooves (8) and two corresponding connecting rods (7). The snap-fit plate (6) has a snap-fit interface (17). A fixing block (9) is fixedly installed in the sliding groove (3). A stop block (10) and a connecting block (11) are fixedly installed on the sliding plate (5). The connecting rod (7) is located between the stop block (10) and the connecting block (11). A stop is placed in the sliding groove (3). A contact spring (12) is provided, with one end of the contact spring (12) abutting against the fixed block (9) and the other end abutting against the stop block (10). A clearance opening (14) is provided on the outer shell (1). A push plate (15) is fixedly provided on the sliding plate (5). The push plate (15) is located in the clearance opening (14). The snap-fit plate (6) is lower than the height of the connecting groove (4). After the pin (21) is inserted into the insertion hole (2), the pin... (21) When located in the card interface (17), the abutting spring (12) moves away from the fixed block (9) and the stop block (10) moves away from the fixed block (9), the card plate (6) is in an inclined state, and the card interface (17) clamps the pin (21); when the push plate (15) contacts the side of the clearance port (14) away from the card plate (6), the card plate (6) is in a vertical state, and the card interface (17) does not clamp the pin (21).
2. The three-prong self-locking connector according to claim 1, characterized in that: An installation block (13) is fixedly provided on the stop block (10), and one end of the abutment spring (12) is sleeved on the installation block (13).
3. A three-prong self-locking connector according to claim 2, characterized in that: The bottom of the sliding groove (3) is provided with a guide groove (18), and a guide block (19) is fixedly provided on the stop block (10). The guide block (19) slides in the guide groove (18).
4. A three-prong self-locking connector according to claim 1, characterized in that: A lever (20) is fixedly installed on the push plate (15).