Charger with pin short circuit prevention function
By incorporating sealing strips, sealing grooves, protective prisms, and retaining strips into the charger, the problem of short circuits in the AC plugs caused by electrolytic capacitor leakage is solved, thus improving the charger's safety.
Patent Information
- Application Number
- CN202422959587.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In existing chargers, leakage of electrolytic capacitors can easily lead to short circuits at the AC plug pins, creating safety hazards such as melting and fire.
By installing a sealing strip in the charger that matches the sealing groove, combined with protective prisms and retaining strips, good sealing and short-circuit protection of the AC plug pins are achieved, preventing electrolytic capacitor leakage from seeping into the plug pins.
It effectively avoids short circuits and melting of AC plug pins, improves the safety protection of the charger, and prevents fire hazards.
Smart Images
Figure CN223898685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charger plug technology, specifically a charger with plug short-circuit protection function. Background Technology
[0002] Existing chargers pose serious safety hazards when electrolytic capacitors on the internal PCB leak: firstly, leakage can accumulate on the inner bottom surface of the plastic back cover, seeping along the pins to the contact surface with the power strip, causing a short circuit and resulting in AC pin melting; secondly, it can create an internal short circuit, causing AC pin melting and potentially leading to fire hazards. To solve these problems, this utility model provides a charger with pin short-circuit protection. Utility Model Content
[0003] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a charger with anti-short circuit function for the plug pins. This is achieved by setting a sealing strip that matches the sealing groove during installation; simultaneously, a protective prism is set to ensure a good seal at the AC plug pin installation point; and a baffle strip is set between the two prisms to prevent internal short circuits that could lead to AC plug pin melting. This solves the technical problems mentioned in the background art.
[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a charger with anti-short circuit function for the plug pins, including AC plug pins symmetrically installed on the bottom surface of a plastic base; two sockets are symmetrically arranged on the bottom surface of the plastic base; the AC plug pins are installed in socket holes opened on the surface of the sockets; sealing grooves are symmetrically opened on opposite sides of the upper part of the AC plug pins; sealing strips are symmetrically arranged on opposite inner sides of the socket holes; the sealing strips are matched and installed in the sealing grooves; a baffle strip is provided on the bottom surface of the plastic base; the baffle strip is located between the two sockets; by setting the baffle strip between the two sockets, internal short circuits are avoided, which could cause the AC plug pins to melt and damage, thus improving safety protection.
[0005] Preferably, the upper part of the plug is integrally connected to a protective prism; the upper surface of the protective prism is flush with the upper surface of the AC pin; the protective prism has a through hole communicating with the plug hole; the upper part of the AC pin is fitted into the through hole.
[0006] Preferably, the upper surface of the retaining wall strip has an adapter slot; the adapter slot corresponds to the two PCB slots, and the two ends of the PCB board are installed in the two PCB slots; the adapter slot matches the bottom of the PCB board for installation, and the adapter slot provided here is used to adapt the installation of the PCB board.
[0007] Preferably, the top of the retaining wall strip is higher than the top of the protective prism, achieving a better blocking effect.
[0008] Preferably, the plastic bottom shell and the rear cylinder cover are fitted together to form the charger housing.
[0009] The beneficial effects of this utility model are as follows:
[0010] This invention achieves a good seal at the AC plug mounting point by matching the sealing strip with the sealing groove and by incorporating a protective truncated pyramid. This prevents leakage from the electrolytic capacitors on the PCB board from seeping into the plastic base and causing the AC plug to melt, thus improving safety. Furthermore, by installing a baffle strip between the two plug platforms, internal short circuits that could lead to AC plug melting are prevented, further enhancing safety. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the structure of a charger with anti-short circuit function for the plug pins provided in an embodiment of the present invention.
[0013] Figure 2 This is a schematic diagram of the structure of this utility model without the PCB board installed.
[0014] Figure 3 for Figure 2 Top view.
[0015] Figure 4 for Figure 3 Sectional view of AA.
[0016] Figure 5 This is a schematic diagram of the structure of this utility model.
[0017] Explanation of reference numerals in the attached diagram: 1-Plastic base shell, 11-Insert platform, 111-Insert hole, 12-Protective bevel, 13-PCB slot, 112-Sealing strip, 2-AC pin, 21-Sealing groove, 3-Blocking strip, 31-Adaptor slot, 4-PCB board. Detailed Implementation
[0018] 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.
[0019] Example 1:
[0020] like Figures 1 to 5 As shown, this embodiment provides a charger with anti-short circuit function for the plug pins, including: AC plug pins 2 symmetrically installed on the inner bottom surface of the plastic base shell 1; specifically, the plastic base shell 1 and the rear cover are matched and installed to form a charger housing. Two plug platforms 11 are symmetrically provided on the inner bottom surface of the plastic base shell 1; the AC plug pins 2 are installed in the plug holes 111 opened on the surface of the plug platform 11; thus, the AC plug pins 2 are stably installed on the inner bottom surface of the plastic base shell 1.
[0021] Please see Figures 3 to 5 As shown, symmetrical sealing grooves 21 are formed on the upper side of the AC plug 2; symmetrical sealing strips 112 are provided on the inner side of the socket 111; the sealing strips 112 are matched and installed in the sealing grooves 21; by setting the sealing strips 112 and the sealing grooves 21 to match and install, a good seal is achieved at the installation point of the AC plug 2, preventing the electrolytic capacitor on the PCB from leaking and seeping into the outside of the plastic base shell 1, which would cause the AC plug to melt and improve safety protection. More specifically, a protective prism 12 is integrally connected to the upper part of the socket 11; the upper end face of the protective prism 12 is flush with the upper end face of the AC plug 2, achieving protection of the top of the AC plug 2; the protective prism 12 has a through hole communicating with the socket 111; the upper part of the AC plug 2 is matched and installed in the through hole. By setting the protective prism 12, the AC plug 2 inside the plastic base shell 1 is effectively protected, preventing the electrolytic capacitor from leaking and seeping into the outside of the plastic base shell 1, thus improving safety protection.
[0022] Please see Figure 2 and Figure 3 As shown, a baffle strip 3 is provided on the inner bottom surface of the plastic base shell 1; the baffle strip 3 is located between the two insertion platforms 11; by setting the baffle strip 3 between the two insertion platforms 11, internal short circuits that could cause AC pins to melt are prevented, thus improving safety protection. More specifically, an adapter slot 31 is formed on the upper surface of the baffle strip 3; the adapter slot 31 corresponds to the two PCB slots 13, and in fact, both ends of the PCB board 4 are installed in the two PCB slots 13; the adapter slot 31 matches and is installed at the bottom of the PCB board 4; the adapter slot 31 provided here is used to adapt the installation of the PCB board 4. More specifically, the top of the baffle strip 3 is higher than the top of the protective prism 12; achieving a better blocking effect.
[0023] In actual use, this embodiment achieves a good seal at the AC pin 2 mounting location by matching the sealing strip 112 with the sealing groove 21 and by setting a protective truncated pyramid 12. This prevents leakage of electrolyte from the electrolytic capacitor on the PCB board from seeping into the plastic base shell 1 and causing the AC pin to melt, thus improving safety. Furthermore, by setting a baffle strip 3 between the two sockets 11, internal short circuits that could lead to AC pin melting are prevented, further enhancing safety.
[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A charger with anti-short circuit protection for plug pins, characterized in that, It includes AC pins (2) symmetrically installed on the inner bottom surface of the plastic base shell (1); the inner bottom surface of the plastic base shell (1) is symmetrically provided with two plug platforms (11); the AC pins (2) are installed in the plug holes (111) opened on the surface of the plug platforms (11); The AC pin (2) has symmetrically opened sealing grooves (21) on the upper side opposite to each other; the socket (111) has symmetrically provided sealing strips (112) on the inner side opposite to each other; the sealing strips (112) are matched and installed in the sealing grooves (21); the plastic bottom shell (1) has a retaining strip (3) on the inner bottom surface; the retaining strip (3) is located between the two sockets (11).
2. The charger with anti-short circuit function for the plug pins as described in claim 1, characterized in that, The upper part of the socket (11) is integrally connected to the protective prism (12); the upper end face of the protective prism (12) is flush with the upper end face of the AC pin (2); the protective prism (12) has a through hole communicating with the socket (111); the upper part of the AC pin (2) is matched and installed in the through hole.
3. The charger with anti-short circuit function for the plug pins as described in claim 2, characterized in that, The upper surface of the retaining strip (3) has an adapter slot (31); the adapter slot (31) corresponds to the two PCB slots (13); the adapter slot (31) is matched and installed at the bottom of the PCB board (4).
4. The charger with anti-short circuit function for the plug pins as described in claim 3, characterized in that, The top of the retaining wall strip (3) is higher than the top of the protective prism (12).
5. The charger with anti-short circuit function for the plug pins as described in claim 4, characterized in that, The plastic bottom shell (1) is matched and installed with the rear cylinder cover to form the charger housing.