Anti-creeping coupler tail end connector three-plug female plug
By introducing protective devices and mechanisms into the three-prong female connector at the end of the coupler, the problems of dustproof, waterproof and leakage prevention are solved, and stable transmission of current and signal is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-10
AI Technical Summary
The existing three-prong female connector at the end of the coupler is not convenient for dustproofing, waterproofing, and leakage prevention during use.
A three-prong female connector for a coupler tail end designed to prevent leakage current includes a female socket, a protective device, and a protective mechanism. Dust prevention is achieved through a front cover plate, a slot, and a locking block structure connected by hinges. Leakage prevention is achieved through the threaded hole connection of the live and neutral wire conductive clips and the ground copper post, as well as the locking structure of the protective sleeve. Comprehensive protection is achieved through the combination of a rear cover, a perforation, an elastic ring, and a sealing strip.
It achieves dustproof, waterproof and leakage-proof effects for the three-prong female connector at the tail end of the coupler, ensuring stable transmission of current and signal.
Smart Images

Figure CN223986774U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of female connector technology, specifically a three-prong female connector for a coupler tail end that is leak-proof. Background Technology
[0002] Coupler tail connectors with three female pins are typically used to connect power cords, ensuring stable transmission of current and signals. These connectors have three pins, corresponding to the live wire, neutral wire, and ground wire respectively. The live and neutral wires are used to transmit current, while the ground wire provides protection against electrical leakage or electric shock.
[0003] Because, based on existing solutions and actual production and processing, the current three-prong female connector for coupler tail end still has some problems, such as the inconvenience of dust and water protection and leakage protection during use. Therefore, we propose a three-prong female connector for coupler tail end that is leak-proof, in order to solve the problems mentioned above. Utility Model Content
[0004] The purpose of this utility model is to provide a three-prong female connector for coupler tail connectors that prevents leakage, so as to solve the problem that the three-prong female connector for coupler tail connectors mentioned in the background art is not convenient for dustproof, waterproof and leakage prevention during use.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-prong female connector for a coupler tail end that prevents leakage, comprising:
[0006] The leakage protection mechanism and the protective device installed on the rear side of the female connector;
[0007] The front side of the female seat is provided with a three-pronged socket, and the bottom front side of the female seat is provided with a slot. The top front side of the female seat is rotatably connected to the front cover plate by a hinge, and a locking block is fixedly connected to the bottom rear side of the front cover plate.
[0008] The rear side of the female connector is fixedly connected to a rear shell, and the left and right ends and the middle part of the rear shell are respectively fixedly connected to a live wire conductive clip and a ground wire copper post. The top front end of the live wire conductive clip and the ground wire copper post are both provided with threaded holes. The annular retaining strip on the outer rear end of the live wire conductive clip and the ground wire copper post is engaged with the annular groove opened at the front end of the internal leakage protection sleeve.
[0009] Preferably, the outer side of the protrusion in the middle of the rear side of the card slot fits against the inner side of the female seat.
[0010] Preferably, the card block engages with the card slot.
[0011] Preferably, the protective device is composed of a back cover, perforations, elastic rings and sealing strips. The back cover has perforations at the left, middle and right ends, and the front side of the perforation is fixedly connected to the elastic ring on the back cover. The outer end of the inner rear side of the back cover is fixedly connected to the sealing strip.
[0012] Preferably, the four corners of the rear cover are fixedly connected to the rear end of the rear shell by a number of bolts.
[0013] Preferably, the perforation corresponds to the external placement of the live and neutral wire conductive clips and the ground copper post.
[0014] Preferably, the front side of the sealing strip is in contact with the rear side of the rear shell.
[0015] Compared with the prior art, the beneficial effects of this utility model are: the three-prong female connector of the anti-leakage coupler tail end is dustproof, waterproof, and leakproof, and is equipped with a protective mechanism;
[0016] 1. The top of the front cover is rotatably connected to the female seat by a hinge. The slot at the bottom front side of the female seat engages with the block at the bottom rear side of the front cover. A protrusion is provided in the middle of the rear side of the front cover. The outer side of the protrusion on the rear side of the front cover fits against the inner side of the female seat, providing dust and water protection.
[0017] 2. The left, middle and right ends of the rear shell are respectively fixedly connected to the neutral and live wire conductive clips and the ground wire copper post. The top and rear ends of the neutral and live wire conductive clips and the ground wire copper post are all provided with threaded holes. The bottom of the bolts connected by threads in the threaded holes fixes the neutral wire, live wire and ground wire inside the neutral and live wire conductive clips and the ground wire copper post. The rear outer ends of the neutral and live wire conductive clips and the ground wire copper post are fixedly connected with annular retaining strips. The annular groove opened at the front end of the leakage protection sleeve engages with the annular retaining strips. The leakage protection sleeve protects the heads of the neutral wire, live wire and ground wire to prevent leakage.
[0018] 3. The rear cover is fixed to the four corners of the rear side of the back cover by several bolts. The back cover has through holes at the positions corresponding to the neutral and live wire conductive clips and the ground copper post. An elastic ring is provided inside the through hole. The inner side of the elastic ring is in contact with the outer side of the neutral, live and ground wires to prevent objects from entering from the connection between the through hole and the neutral, live and ground wires. A sealing strip is fixedly connected to the outer end of the inner rear side of the back cover. The sealing strip seals the connection between the back cover and the rear cover, and a protective mechanism is provided. Attached Figure Description
[0019] Figure 1 This is a frontal perspective view of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0021] Figure 3This is a schematic diagram of the bottom perspective structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the internal structure of the rear shell of this utility model.
[0023] Figure 5 This is a perspective structural diagram of the live and neutral wire conductive clip, the ground wire copper pillar, and the leakage protection sleeve of this utility model.
[0024] Figure 6 This is a front view structural diagram of the back cover of this utility model.
[0025] In the diagram: 1. Female connector; 2. Three-prong socket; 3. Slot; 4. Front cover; 5. Clamping block; 6. Rear cover; 7. Neutral and live wire conductive clips; 8. Ground wire copper post; 9. Threaded hole; 10. Annular retaining strip; 11. Leakage protection sleeve; 12. Annular groove; 13. Rear cover; 14. Perforation; 15. Elastic annular ring; 16. Sealing strip. Detailed Implementation
[0026] 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.
[0027] Example 1: Please refer to Figures 1-5 The existing three-prong female connector at the tail end of the coupler is not convenient for dustproofing, waterproofing, and leakage prevention during use. In order to solve this technical problem, this embodiment discloses the following technical content;
[0028] The front side of the female seat 1 is provided with a three-pronged socket 2, and the bottom front side of the female seat 1 is provided with a slot 3. The outer side of the protrusion in the middle of the rear side of the slot 3 fits against the inner side of the female seat 1. The top front side of the female seat 1 is rotatably connected to the front cover plate 4 by a hinge, and a locking block 5 is fixedly connected to the bottom rear side of the front cover plate 4. The locking block 5 is engaged with the slot 3.
[0029] The rear side of the female base 1 is fixedly connected to the outer end of the rear shell 6, and the left and right ends and the middle part of the rear shell 6 are respectively fixedly connected to the neutral and live wire conductive clips 7 and the ground wire copper pillars 8. The top front end of the neutral and live wire conductive clips 7 and the ground wire copper pillars 8 are both provided with threaded holes 9. The annular clips 10 on the outer rear end of the neutral and live wire conductive clips 7 and the ground wire copper pillars 8 are engaged with the annular grooves 12 opened at the front end of the internal leakage protection sleeve 11.
[0030] When using the female plug, rotate the front cover 4 to the front to open it. At this time, the locking block 5 separates from the locking slot 3. Then insert the plug into the three-prong socket 2. The front cover 4 can cover the front of the female plug to prevent dust and water from entering. Insert the front of the leakage protection sleeve 11 into the outer rear end of the neutral and live wire conductive clip 7 and the ground copper post 8, so that the annular groove 12 and the annular locking strip 10 are engaged together to prevent the leakage protection sleeve 11 from falling off. Insert the heads of the neutral wire, live wire and ground wire into the neutral and live wire conductive clip 7 and the ground copper post 8, and connect them to the threaded hole 9 with bolts. The bolts will fix the neutral wire, live wire and ground wire in the neutral and live wire conductive clip 7 and the ground copper post 8 respectively. The leakage protection sleeve 11 can protect the heads of the neutral wire, live wire and ground wire to prevent the heads of the neutral wire, live wire and ground wire from bending and causing leakage.
[0031] Example 2: Existing leakage-proof coupler tail connectors have a three-prong female connector. When the female connector is not in use, it is inconvenient to protect the rear side. Therefore, this example uses the following technical solution, such as... Figures 1-3 and Figure 6 As shown;
[0032] The protective device is composed of a rear cover 13, a perforation 14, an elastic ring 15 and a sealing strip 16. The four corners of the rear cover 13 are fixedly connected to the rear end of the rear shell 6 by several bolts. The left, middle and right ends of the rear cover 13 are provided with perforations 14, and the perforations 14 correspond to the external placement of the live and neutral wire conductive clips 7 and the ground copper post 8. The front side of the perforation 14 is fixedly connected to the elastic ring 15 on the rear cover 13, and the outer end of the inner rear side of the rear cover 13 is fixedly connected to the sealing strip 16, and the front side of the sealing strip 16 is in contact with the rear side of the rear shell 6.
[0033] When the female connector is not in use, the rear side of the female connector needs to be protected to prevent dust and other objects from entering the interior of the rear housing 6. The rear cover 13 is connected to the rear housing 6, and the front side of the sealing strip 16 is in contact with the rear side of the rear housing 6 to prevent dust and other objects from entering from the connection between the rear housing 6 and the rear cover 13. The neutral wire, live wire and ground wire can be passed through the through hole 14. The elastic ring 15 supports the neutral wire, live wire and ground wire. When the rear cover 13 is connected to the rear end of the rear housing 6, the rear cover 13 is fixedly connected to the rear housing 6 with bolts.
[0034] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A leakage-proof coupler tail end connector three-pin female socket, comprising: a female seat (1) and a leakage-proof mechanism arranged inside the rear side of the female seat (1) and a protective device arranged on the rear side of the female seat (1); characterized in that: a three-pin female socket (2) is arranged on the front side of the female seat (1), a clamping groove (3) is formed on the bottom end of the front side of the female seat (1), the top end of the front side of the female seat (1) is rotationally connected with a front cover plate (4) through a hinge, and the bottom part of the rear side of the front cover plate (4) is fixedly connected with a clamping block (5); a rear shell (6) is fixedly connected with the outer end of the rear side of the female seat (1), zero and fire wire conductive clamps (7) and ground wire copper columns (8) are respectively fixedly connected with the left and right ends and the middle part of the inside of the rear shell (6), threaded holes (9) are formed on the top front end of the zero and fire wire conductive clamps (7) and the ground wire copper columns (8), and annular clamping strips (10) on the outer side of the rear end of the zero and fire wire conductive clamps (7) and the ground wire copper columns (8) are clampingly connected with annular grooves (12) formed on the front end of the inside of a leakage-proof protective sleeve (11).
2. The leakage current proof coupler tail end connector three-prong female plug of claim 1, wherein: The outer side of the protruding block arranged on the middle part of the rear side of the clamping groove (3) is in close contact with the inner side of the female seat (1).
3. The leakproof coupler tail connector three-prong female plug of claim 1, wherein: The clamping block (5) is clampingly connected with the clamping groove (3).
4. The leakproof coupler tail connector three-prong female plug of claim 1, wherein: The protective device is composed of a rear cover (13), perforations (14), elastic annular rings (15) and sealing strips (16), the left, middle and right ends of the rear cover (13) are provided with perforations (14), the front side of the perforation (14) is fixedly connected with an elastic annular ring (15) on the rear cover (13), and the outer end of the rear side of the inside of the rear cover (13) is fixedly connected with a sealing strip (16).
5. The leakproof coupler tail connector three-prong female plug of claim 4, wherein: The four corners of the rear cover (13) are fixedly connected with the rear end of the rear shell (6) through a plurality of bolts.
6. The leakproof coupler tail connector three-prong female plug of claim 4, wherein: The perforations (14) correspond to the outer parts of the zero and fire wire conductive clamps (7) and the ground wire copper columns (8).
7. The leakage current proof coupler tail end connector three-prong female plug of claim 4, wherein: The front side of the sealing strip (16) is in close contact with the rear side of the rear shell (6).