A plug converter

By using a snap-fit ​​and latching connection structure and circuit board positioning design, the inefficiency and poor appearance of traditional screw fixing methods are solved, enabling rapid assembly and stable connection, and improving the production efficiency and aesthetics of plug adapters.

CN224355514UActive Publication Date: 2026-06-12NINGBO DUOQUAN ELECTRIC APPLIANCE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO DUOQUAN ELECTRIC APPLIANCE
Filing Date
2025-07-18
Publication Date
2026-06-12

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Abstract

This application discloses a plug adapter, belonging to the field of electrical equipment technology. It includes a first housing and a second housing, with a circuit board installed between them. The first housing has pins, one end of which passes through the first housing and is electrically connected to the circuit board. The second housing has a conversion interface. The inner wall of the first housing has a snap-fit, and the inner wall of the second housing has a snap-fit ​​that matches the snap-fit. The snap-fit ​​and the snap-fit ​​are connected to limit the connection between the first and second housings. The first and second housings are snap-fit ​​connected via the snap-fit ​​and the snap-fit, requiring no additional tools and allowing for rapid assembly. This reduces the number of parts and assembly steps in the production process, improving product aesthetics.
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Claims

1. A plug adapter, characterized in that, It includes a first housing (1) and a second housing (2). A circuit board (3) is installed between the first housing (1) and the second housing (2). A pin (4) is provided on the first housing (1). One end of the pin (4) passes through the first housing (1) and is electrically connected to the circuit board (3). The second housing (2) is provided with a conversion interface (21). An undercut (11) is provided on the inner wall of the first housing (1). A clamping position (22) adapted to the undercut (11) is provided on the inner wall of the second housing (2). The undercut (11) is connected to the clamping position (22) to limit the connection between the first housing (1) and the second housing (2).

2. A plug adapter according to claim 1, characterized in that, The circuit board (3) is provided with a first positioning hole (31). A first protrusion (12) adapted to the first positioning hole (31) is provided on the inner wall of the first housing (1). The first protrusion (12) is inserted into the first positioning hole (31) to positionally connect the circuit board (3) and the first housing (1).

3. A plug adapter according to claim 2, characterized in that, The circuit board (3) is provided with a second positioning hole (32). A second protrusion (23) adapted to the second positioning hole (32) is provided on the inner wall of the second housing (2). The second protrusion (23) is inserted into the second positioning hole (32) to positionally connect the circuit board (3) and the second housing (2).

4. A plug adapter according to claim 3, characterized in that, The first protrusion (12) is in a convex shape, and the second protrusion (23) is in a linear shape; or, the first protrusion (12) is in a linear shape, and the second protrusion (23) is in a convex shape.

5. A plug adapter according to claim 1, characterized in that, A first positioning structure (13) adapted to the circuit board (3) is provided on the inner wall of the first housing (1). One side of the circuit board (3) abuts against the first positioning structure (13). The first positioning structure (13) is used to limit the circuit board (3) in the left-right direction and support the circuit board (3).

6. A plug adapter according to claim 5, characterized in that, A second positioning structure (24) adapted to the circuit board (3) is provided on the inner wall of the second housing (2). The circuit board (3) is installed in the second positioning structure (24). The second positioning structure (24) is used to limit the circuit board (3) in the up-down direction and support the circuit board (3).

7. A plug adapter according to claim 1, characterized in that, A surge indicator light (5) is installed on the second housing (2). One end of the surge indicator light (5) passes through the second housing (2) and is electrically connected to the circuit board (3).

8. A plug adapter according to claim 1, characterized in that, Both sides of the first housing (1) are provided with holding parts (14). The holding parts (14) are in a concave structure.

9. A plug adapter according to claim 1, characterized in that, A fixing seat (15) adapted to the pin (4) is provided on the first housing (1). The other end of the pin (4) passes through the fixing seat (15) and extends out.

10. A plug adapter according to claim 1, characterized in that, The rated current of the pin (4) is 10 amperes; or, the rated current of the pin (4) is 20 amperes.