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CN-224204805-U - Charger with compact structure

CN224204805UCN 224204805 UCN224204805 UCN 224204805UCN-224204805-U

Abstract

The utility model discloses a charger with a compact structure, which relates to the technical field of chargers and comprises a charger shell and an AC-DC main circuit, wherein the AC-DC main circuit comprises an AC input pin, a DC output interface, a PCB (printed Circuit Board) and a current fuse RF1, the charger shell comprises a front end shell and a rear end shell, the AC input pin comprises a plug-in part and a power-on part, L-line input pins and N-line input pins are arranged at left and right intervals to form an accommodating space between the power-on part of the L-line input pins and the power-on part of the N-line input pins, the current fuse RF1 is horizontally connected to the PCB and is positioned in the accommodating space, one end of the current fuse RF1 is electrically connected with the L-line input pins, on one hand, the charger is more compact in structure and is more beneficial to the miniaturization design of the charger, and on the other hand, the current fuse RF1 can be closer to the AC input pins, and the circuit connection distance between the current fuse RF1 and the corresponding AC input pins is more beneficial to be shortened when the circuit is connected.

Inventors

  • CHEN WENLE

Assignees

  • 东莞市乐丰电器科技有限公司

Dates

Publication Date
20260505
Application Date
20250527

Claims (10)

  1. 1. A compact charger comprises a charger housing and an AC-DC main circuit, and is characterized in that, The AC-DC main circuit comprises an AC input pin, a DC output interface, a PCB board and a current fuse RF1; The charger shell comprises a front end shell used for being connected with the AC input pins and a rear end shell connected with the front end shell, wherein the front end shell is provided with an inner space, the rear end shell is provided with an inner space, and the inner space of the front end shell is communicated with the inner space of the rear end shell in the front-back direction; the PCB board is arranged in the rear end shell and extends forwards to penetrate into the front end shell; The AC input pin comprises a plug-in part positioned outside the front end shell and an electricity receiving part positioned in the front end shell; The L-line input pins and the N-line input pins are arranged at left and right intervals to form an accommodating space at intervals between the power-on parts of the L-line input pins and the power-on parts of the N-line input pins; The current fuse RF1 is horizontally connected to the PCB and located in the accommodating space, and one end of the current fuse RF1 is electrically connected with the L-line input pin.
  2. 2. The charger according to claim 1, wherein a main body length direction of the current fuse RF1 is a left-right direction; both ends in the length direction of the body of the current fuse RF1 are at least partially located in the accommodation space.
  3. 3. The charger according to claim 2, wherein the AC-DC main circuit further comprises an inductor L1, an electrolytic capacitor EC1 and an electrolytic capacitor EC2 connected to the PCB board, and the positive electrode of the electrolytic capacitor EC1 and the positive electrode of the electrolytic capacitor EC2 are electrically connected to two ends of the inductor L1, respectively.
  4. 4. A charger according to claim 3, wherein the inductance L1, the electrolytic capacitor EC1 and the electrolytic capacitor EC2 are all connected to the PCB board in a horizontal type and are all at least partially located in the front-end housing.
  5. 5. The charger of claim 4 wherein the front housing is configured as a flat structure with a flat distance corresponding to the same direction as the thickness of the PCB.
  6. 6. The charger of claim 4 or 5, wherein the electrolytic capacitor EC1, the electrolytic capacitor EC2, and the inductor L1 are connected to a PCB board and are configured The length direction of the body of the electrolytic capacitor EC1 is the same as the length direction of the body of the electrolytic capacitor EC2, the length direction of the body of the inductor L1 is perpendicular to the length direction of the body of the electrolytic capacitor EC1, The positive end of the electrolytic capacitor EC1 and the positive end of the electrolytic capacitor EC2 are both positioned on the same side of the inductor L1 and are respectively close to the two ends of the inductor L1.
  7. 7. The charger of claim 1 wherein the AC-DC main circuit further comprises a transformer T1; The transformer T1 is connected to the PCB, and an integrally formed Mylar isolating film is arranged between the primary winding of the transformer T1 and the secondary winding of the transformer T1.
  8. 8. The charger of claim 1 wherein the AC-DC main circuit uses DIP components.
  9. 9. The charger according to claim 1 or 8, wherein the rear end housing comprises a main body integrally formed with the front end housing, the main body being provided in front-rear communication, the rear end housing further comprising a rear cover covering a rear end opening of the main body, the connection opening being provided on the rear cover.
  10. 10. The charger of claim 1 wherein the front end housing is injection molded to the AC input pins.

Description

Charger with compact structure Technical Field The utility model relates to the technical field of chargers, in particular to a charger with a compact structure. Background The structure of the European style two-plug type charging plug is as shown in the Chinese utility model 'a waterproof European style power charger' with the bulletin number of CN211958797U, wherein the front end of a charger shell is provided with a flat front end shell, the left side and the right side of the flat front end shell are provided with corresponding diamond parts, and two pins of the charger are connected to the front side of the flat front end shell so as to be suitable for plugging of a European style socket. As charger market demand steadily increases. The charger with more compact structure and smaller volume is especially important to develop. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provides a technical scheme for solving the problems. In order to achieve the purpose, the utility model provides the technical scheme that the charger with the compact structure comprises a charger shell and an AC-DC main circuit, wherein the AC-DC main circuit comprises an AC input pin, a DC output interface, a PCB board and a current fuse RF1; The charger shell comprises a front end shell used for being connected with the AC input pins and a rear end shell connected with the front end shell, wherein the front end shell is provided with an inner space, the rear end shell is provided with an inner space, and the inner space of the front end shell is communicated with the inner space of the rear end shell in the front-back direction; the PCB board is arranged in the rear end shell and extends forwards to penetrate into the front end shell; The AC input pin comprises a plug-in part positioned outside the front end shell and an electricity receiving part positioned in the front end shell; The L-line input pins and the N-line input pins are arranged at left and right intervals to form an accommodating space at intervals between the power-on parts of the L-line input pins and the power-on parts of the N-line input pins; The current fuse RF1 is horizontally connected to the PCB and located in the accommodating space, and one end of the current fuse RF1 is electrically connected with the L-line input pin. The utility model further provides that the length direction of the main body of the current fuse RF1 is the left-right direction; both ends in the length direction of the body of the current fuse RF1 are at least partially located in the accommodation space. As a further scheme of the utility model, the AC-DC main circuit further comprises an inductor L1, an electrolytic capacitor EC1 and an electrolytic capacitor EC2 which are connected to the PCB, wherein the positive electrode of the electrolytic capacitor EC1 and the positive electrode of the electrolytic capacitor EC2 are respectively and electrically connected with two ends of the inductor L1. As a further scheme of the utility model, the inductor L1, the electrolytic capacitor EC1 and the electrolytic capacitor EC2 are all horizontally connected to the PCB and are at least partially positioned in the front-end shell. As a further scheme of the utility model, the front end shell forms a flat structure, and the direction corresponding to the flat distance is the same as the thickness direction of the PCB. As a further scheme of the utility model, the electrolytic capacitor EC1, the electrolytic capacitor EC2 and the inductor L1 are connected on the PCB board and form The length direction of the body of the electrolytic capacitor EC1 is the same as the length direction of the body of the electrolytic capacitor EC2, the length direction of the body of the inductor L1 is perpendicular to the length direction of the body of the electrolytic capacitor EC1, The positive end of the electrolytic capacitor EC1 and the positive end of the electrolytic capacitor EC2 are both positioned on the same side of the inductor L1 and are respectively close to the two ends of the inductor L1. The AC-DC main circuit further comprises a transformer T1; The transformer T1 is connected to the PCB, and an integrally formed Mylar isolating film is arranged between the primary winding of the transformer T1 and the secondary winding of the transformer T1. As a further aspect of the utility model, the AC-DC main circuit uses DIP components. The utility model further provides that the rear end shell comprises a main body part integrally formed with the front end shell, the main body part is arranged in a front-back communication way, the rear end shell further comprises a rear cover which is covered on a rear end opening of the main body part, and the connecting opening is arranged on the rear cover. As a further proposal of the utility model, the front end shell is connected with the AC input pins in an injection molding mode. Compared with the prior art, the char