Tail plug type charger baby based on AC charging

Abstract

The utility model discloses a tail plug type power bank based on AC charging, which comprises a shell, a battery and a PCB are arranged in the shell, a charging circuit unit and a discharging circuit unit are arranged on the PCB, a turnover output plug is arranged on the side portion of the shell, the output plug is electrically connected with the discharging circuit unit, and the output plug is electrically connected with the discharging circuit unit. An AC plug assembly is arranged at the end part of the shell, the AC plug assembly comprises two AC plug terminals, and the AC plug terminals are electrically connected with the charging circuit unit. Compared with the prior art, equipment such as a charging wire and a charger does not need to be additionally arranged, a user can plug the charging device into an AC socket for charging at any time when going out, and the charging device is convenient for the user to carry and use.

Description

Technical Field

[0001] The utility model relates to a power bank, in particular to a tail-plug type power bank based on AC charging. Background Art

[0002] A power bank is a portable device used to charge electronic devices such as mobile phones. In order to facilitate carrying and using with a mobile phone, some power banks that can be plugged into the back of a mobile phone have appeared on the market. This type of power bank has a battery with a circuit board inside. Its output interface is used to plug in the mobile phone, and its input interface is used to connect to an external charging cable for charging. In actual application, users need to configure a charging cable and charger to charge the power bank. Once the user forgets to bring the charger and charging cable, the power bank cannot be replenished in time after it runs out of power, which will cause a lot of inconvenience, especially during business trips. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tail-plug-type power bank based on AC charging, which can be directly plugged into an AC socket for charging without the need for additional charging equipment and is convenient to carry and use, in view of the deficiencies in the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0005] A tail plug-in power bank based on AC charging, comprising a shell, wherein a battery and a PCB board are arranged in the shell, a charging circuit unit and a discharging circuit unit are arranged on the PCB board, a flippable output plug is arranged on the side of the shell, the output plug is electrically connected to the discharging circuit unit, an AC plug assembly is arranged at the end of the shell, the AC plug assembly includes two AC plug terminals, and the AC plug terminals are electrically connected to the charging circuit unit.

[0006] Preferably, the AC plug assembly includes an end shell, an inner support and two spring sheets, the AC plug terminal and the spring sheet are both arranged between the end shell and the AC plug assembly, the spring sheet is electrically connected to the charging circuit unit, the AC plug terminal corresponds to the spring sheet one-to-one, and the AC plug terminal is located above the spring sheet, a conductive hinge portion is provided at the end of the AC plug terminal, a protrusion is formed at one end of the conductive hinge portion away from the AC plug terminal, an oblique bending portion is formed at the end of the spring sheet, the protrusion corresponds to the oblique bending portion one-to-one and the two are elastically abutted, an insulating horizontal axis is provided between the two conductive hinge portions, and the insulating horizontal axis is rotatably matched with the end shell and the inner support.

[0007] Preferably, the inner support includes two side plates and a bottom plate, the side plates are provided with axial holes, and the two ends of the insulating transverse axis pass through the axial holes of the two side plates respectively.

[0008] Preferably, two screw holes are provided on the bottom plate, and the end shell is fixedly connected to the inner support by screws passing through the screw holes.

[0009] Preferably, an inner bracket is fixed on the inner side of the shell, and a flip shaft is provided on the output plug, and the flip shaft is rotatably connected to the inner bracket.

[0010] Preferably, a limit column is provided at the edge of the output plug, and an elastic support arm is formed on the inner bracket. The limit column abuts and slides with the side of the elastic support arm, and a limit slot is provided at the end of the elastic support arm. When the limit column slides to the end of the elastic support arm, it is inserted into the limit slot.

[0011] Preferably, a torsion spring is sleeved on the flip shaft and is used to drive the output plug to flip outward.

[0012] Preferably, a wireless charging module is provided on one side of the shell, and the wireless charging module is electrically connected to the wireless charging driving circuit on the PCB board.

[0013] In the tail-plug power bank based on AC charging disclosed by the utility model, the output plug is used to plug into the tail of the mobile phone, and the power of the battery is transmitted to the mobile phone through the discharge circuit unit, thereby charging the mobile phone. When the power bank is insufficient, the AC plug terminal can be directly plugged into the AC socket, and the power of the AC socket is obtained through the charging circuit unit to charge the battery. Compared with the prior art, the utility model does not need to be equipped with additional equipment such as charging cables and chargers. Users can plug it into the AC socket for charging at any time when going out, which is convenient for users to carry and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of the tail-plug type power bank based on AC charging of the utility model;

[0015] Figure 2 It is the structural diagram of the output plug and the inner bracket;

[0016] Figure 3 The comparative view of the output plug before and after flipping over relative to the inner bracket;

[0017] Figure 4 is an exploded view of the AC plug assembly;

[0018] Figure 5 Comparison view of the AC plug assembly before and after the AC plug terminals are flipped over. DETAILED DESCRIPTION

[0019] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0020] The utility model discloses a tail plug type power bank based on AC charging, combined with Figures 1 to 5 As shown, it includes a shell 1, in which a battery 2 and a PCB board 3 are arranged, on which a charging circuit unit and a discharging circuit unit are arranged, a flippable output plug 4 is arranged on the side of the shell 1, and the output plug 4 is electrically connected to the discharging circuit unit, and an AC plug assembly 5 is arranged at the end of the shell 1, and the AC plug assembly 5 includes two AC plug terminals 50, and the AC plug terminals 50 are electrically connected to the charging circuit unit.

[0021] In the above structure, the output plug 4 is used to plug into the rear of the mobile phone, and the power of the battery 2 is transmitted to the mobile phone through the discharge circuit unit, thereby charging the mobile phone. When the power bank is low on power, the AC plug terminal 50 can be directly plugged into the AC socket, and the power of the AC socket is obtained through the charging circuit unit to charge the battery 2. Compared with the prior art, the utility model does not need to be equipped with additional equipment such as charging cables and chargers. Users can plug it into the AC socket for charging at any time when going out, which is convenient for users to carry and use.

[0022] The AC plug assembly 5 in this embodiment preferably adopts a reversible structure. Figure 4 The AC plug assembly 5 includes an end shell 51, an inner support 52 and two springs 53. The AC plug terminal 50 and the springs 53 are both arranged between the end shell 51 and the AC plug assembly 5. The springs 53 are electrically connected to the charging circuit unit. The AC plug terminal 50 corresponds to the springs 53 one by one, and the AC plug terminal 50 is located above the springs 53. A conductive hinge 500 is provided at the end of the AC plug terminal 50. A protrusion 501 is formed at one end of the conductive hinge 500 away from the AC plug terminal 50. An oblique bending portion 530 is formed at the end of the spring 53. The protrusion 501 corresponds to the oblique bending portion 530 one by one and the two are elastically abutted. An insulating horizontal axis 54 is provided between the two conductive hinges 500. The insulating horizontal axis 54 is rotatably matched with the end shell 51 and the inner support 52.

[0023] In the above structure, the structure composed of the end shell 51 and the inner support 52 provides support for the AC plug terminal 50 and the spring 53, and the spring 53 is attached to the bottom of the inner support 52, and the two AC plug terminals 50 are correspondingly arranged on the two springs 53. When the AC plug terminal 50 is turned outward based on the insulating horizontal axis 54 as the axis, the protrusion 501 and the oblique bending portion 530 are kept in contact and slide relatively. In this process, the AC plug terminal 50, the spring 53 and the charging circuit unit are reliably electrically connected, and the AC plug terminal 50 can be directly plugged into the AC socket, thereby realizing the charging function of the power bank. Based on the above structure, it can be seen that the AC plug terminal 50 in this embodiment can be turned out and stored, and the overall structure of the power bank is compact, which is convenient for carrying and charging.

[0024] In order to limit the insulating horizontal axis 54 and ensure that the insulating horizontal axis 54 can rotate reliably, in this embodiment, the inner support 52 includes two side plates 520 and a bottom plate 521, and the side plates 520 are provided with axial holes 522, and the two ends of the insulating horizontal axis 54 pass through the axial holes 522 of the two side plates 520 respectively.

[0025] As a preferred embodiment, two screw holes 525 are provided on the bottom plate 521, and the end shell 51 is fixedly connected to the inner support 52 by screws passing through the screw holes 525. After the end shell 51 and the inner support 52 are fixed by screws, the AC plug assembly 5 can be made into an integral component. In a specific production process, the manufacturer can choose to install the AC plug assembly 5 or only install the DC interface according to the needs, which is conducive to saving design and manufacturing resources.

[0026] In order to support and limit the output plug 4 , in this embodiment, an inner bracket 40 is fixed to the inner side of the housing 1 , and a flip shaft 41 is provided on the output plug 4 , and the flip shaft 41 is rotatably connected to the inner bracket 40 .

[0027] On this basis, a limit column 42 is provided at the edge of the output plug 4, and an elastic support arm 400 is formed on the inner bracket 40. The limit column 42 abuts against and slides with the side of the elastic support arm 400, and a limit snap-in 401 is provided at the end of the elastic support arm 400. When the limit column 42 slides to the end of the elastic support arm 400, it is snapped into the limit snap-in 401.

[0028] In the above structure, the limiting column 42 maintains reliable contact with the elastic support arm 400. This contact mode can provide a certain turning damping for the output plug 4 to prevent the output plug 4 from being too loose. At the same time, a limiting bayonet 401 is provided at the end of the elastic support arm 400. When the output plug 4 is turned outward to the right position, the limiting column 42 is snapped into the limiting bayonet 401 to keep the output plug 4 in the turned-out state. When the output plug 4 needs to be retracted into the shell 1, it is only necessary to overcome the clamping stress between the limiting column 42 and the limiting bayonet 401 to slide the limiting column 42 to the side of the elastic support arm 400.

[0029] On this basis, a torsion spring 43 is sleeved on the turning shaft 41 for driving the output plug 4 to turn outward.

[0030] In order to realize the wireless charging function, in this embodiment, a wireless charging module 6 is provided on one side of the housing 1, and the wireless charging module 6 is electrically connected to the wireless charging driving circuit on the PCB board 3. The wireless charging module 6 can be a module for charging a watch.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tail-plug power bank based on AC charging, characterized in that: The invention comprises a housing (1), wherein a battery (2) and a PCB board (3) are arranged inside the housing (1), a charging circuit unit and a discharging circuit unit are arranged on the PCB board (3), a reversible output plug (4) is arranged on the side of the housing (1), and the output plug (4) is electrically connected to the discharging circuit unit, and an AC plug assembly (5) is arranged at the end of the housing (1), and the AC plug assembly (5) includes two AC plug terminals (50), and the AC plug terminals (50) are electrically connected to the charging circuit unit.

2. The AC charging-based tail plug-in power bank as claimed in claim 1, characterized in that: The AC plug assembly (5) comprises an end shell (51), an inner support (52) and two springs (53); the AC plug terminal (50) and the springs (53) are both arranged between the end shell (51) and the AC plug assembly (5); the springs (53) are electrically connected to the charging circuit unit; the AC plug terminal (50) corresponds to the springs (53) one by one, and the AC plug terminal (50) is located above the springs (53); the end of the AC plug terminal (50) is A conductive hinged portion (500) is provided at the end thereof, a protrusion (501) is formed at one end of the conductive hinged portion (500) away from the AC plug terminal (50), an oblique bending portion (530) is formed at the end of the spring sheet (53), the protrusion (501) corresponds to the oblique bending portion (530) one by one and the two are elastically abutted, an insulating horizontal axis (54) is provided between the two conductive hinged portions (500), and the insulating horizontal axis (54) is rotatably matched with the end shell (51) and the inner support (52).

3. The AC charging-based tail plug-in power bank as claimed in claim 2, characterized in that: The inner support (52) comprises two side plates (520) and a bottom plate (521). The side plates (520) are provided with shaft holes (522). The two ends of the insulating horizontal axis (54) respectively pass through the shaft holes (522) of the two side plates (520).

4. The AC charging-based tail plug-in power bank as claimed in claim 3, characterized in that: The bottom plate (521) is provided with two screw holes (525), and the end shell (51) and the inner support (52) are fixedly connected by screws passing through the screw holes (525).

5. The AC charging-based tail plug-in power bank as claimed in claim 1, characterized in that: An inner bracket (40) is fixed on the inner side of the housing (1), and a turning shaft (41) is provided on the output plug (4), wherein the turning shaft (41) is rotatably connected to the inner bracket (40).

6. The AC charging-based tail plug-in power bank as claimed in claim 5, characterized in that: A limiting column (42) is provided at the edge of the output plug (4), an elastic support arm (400) is formed on the inner bracket (40), the limiting column (42) abuts against and slidably fits with the side of the elastic support arm (400), and a limiting snap-in (401) is provided at the end of the elastic support arm (400), and when the limiting column (42) slides to the end of the elastic support arm (400), it is snapped into the limiting snap-in (401).

7. The AC charging-based tail-plug power bank as claimed in claim 5, characterized in that: The turning shaft (41) is sleeved with a torsion spring (43) for driving the output plug (4) to turn outward.

8. The AC charging-based tail-plug power bank as claimed in claim 1, characterized in that: A wireless charging module (6) is provided on one side of the housing (1), and the wireless charging module (6) is electrically connected to the wireless charging drive circuit on the PCB board (3).

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