CN211296536U

CN211296536U - Power adapter

Info

Publication number: CN211296536U
Application number: CN201922343834.3U
Authority: CN
Inventors: 黎明兴; 陆海传
Original assignee: Aukey Technology Co Ltd
Current assignee: Aukey Technology Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-18
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to a power adapter, power adapter includes: a main circuit substrate in a flat shape and a capacitor unit provided on one surface of the main circuit substrate, the capacitor unit including a first circuit board electrically connected with the main circuit substrate and a capacitor provided on a surface of the first circuit board, wherein the first circuit board is provided upright on the surface of the main circuit substrate such that the capacitor extends above the main circuit substrate substantially in parallel with the main circuit substrate. According to the utility model discloses a power adapter can make full use of the space through reasonable components and parts overall arrangement on the circuit board to reduce power adapter's whole volume, convenience of customers carries.

Description

Power adapter

Technical Field

The utility model relates to a power conversion equipment field, it especially relates to a power adapter.

Background

The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances, and generally comprises components such as a shell, a transformer, an inductor, a capacitor, a control chip, a circuit board and the like. The working principle of the device is to convert alternating current input into direct current output. According to the connection mode, the power adapter can be divided into a wall-plugging type and a desktop type.

At present, electronic devices such as notebook computers are developed in a direction of miniaturization and lightness, however, the power adapter used in cooperation has the problems of large volume, inconvenient carrying and the like.

Therefore, it is necessary to modify the structure of the existing power adapter to meet the requirements of users for miniaturization and portability of the power adapter.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect of power adapter according to prior art, the utility model aims to provide a power adapter, its volume is less, conveniently carries.

This object is achieved by a power adapter according to the present invention. The power adapter includes: a main circuit board in a flat plate shape; and a capacitor unit disposed on one surface of the main circuit substrate, the capacitor unit including a first circuit board electrically connected with the main circuit substrate and a capacitor disposed on a surface of the first circuit board, wherein the first circuit board is disposed upright on the surface of the main circuit substrate such that the capacitor extends above the main circuit substrate substantially in parallel with the main circuit substrate.

According to an optional technical solution of the present invention, the capacitor unit includes a first group of capacitors and a second group of capacitors, the first group of capacitors and the second group of capacitors are respectively in different heights above the main circuit substrate and extend in parallel to the main circuit substrate. In this way, the space above the main circuit substrate can be fully utilized.

According to an optional technical solution of the present invention, the first group of capacitors and the second group of capacitors respectively include a capacitor, and the projections of the capacitors in the first group of capacitors and the capacitors in the second group of capacitors in the direction perpendicular to the main circuit substrate are aligned with each other or staggered. In this way, the height of the capacitor unit can be reduced to accommodate the overall height of the power adapter.

According to an alternative embodiment of the present invention, the first group of capacitors comprises two capacitors arranged side by side, the second group of capacitors comprises one capacitor, and the capacitor of the second group of capacitors is located between two capacitors of the first group of capacitors and intersects at least one of them as seen in a direction perpendicular to the main circuit substrate. In this way, the height of the capacitor unit can be reduced to accommodate the overall height of the power adapter.

According to the utility model discloses an optional technical scheme, power adapter still includes electromagnetic interference filtering and rectification subassembly, electromagnetic interference filtering and rectification subassembly include with the second circuit board that the main circuit base plate electricity is connected with set up in electromagnetic interference filtering component and rectifier bridge component on the second circuit board, the second circuit board set up upright in main circuit base plate on the surface. In this way, the space above the main circuit substrate can be fully utilized.

According to the utility model discloses an optional technical scheme, the main circuit base plate is the rectangle in essence, power adapter still includes transformer element, transformer element set up in main circuit base plate on the surface, and with electromagnetic interference filtering and rectification subassembly are arranged along a diagonal direction of rectangle. Therefore, the distance between the electromagnetic interference filtering and rectifying component and the transformer element is longer, and the integral heat dissipation of the power adapter is facilitated.

According to the utility model discloses an optional technical scheme, power adapter still includes output interface unit, output interface unit include with the third circuit board that main circuit base plate electricity is connected with set up in output interface on the third circuit board, the third circuit board set up upright in main circuit base plate on the surface, just output interface unit with capacitor unit arranges along another diagonal direction of rectangle. Thus, the layout space of the main circuit board can be effectively utilized.

According to an optional technical solution of the present invention, the third circuit board includes two third circuit boards disposed next to each other and extending parallel to each other and two output interfaces respectively disposed on surfaces of the two third circuit boards that face away from each other. In this way, the two third circuit boards can be made to abut against each other more, making more efficient use of the local space.

According to an optional technical scheme of the utility model, the power adapter still includes the LED lamp, the LED lamp set up upright in main circuit substrate on the surface, just the LED lamp dispose by the transformer element with in the space that the edge of main circuit substrate formed. In this way, the space above the main circuit substrate can be fully utilized.

According to the utility model discloses an optional technical scheme, power adapter still includes insulating barrier, insulating barrier set up in electromagnetic interference filtering and rectification subassembly with between the output interface unit, insulating barrier include next door and with the installation department that next door set up perpendicularly, be provided with the mounting groove on the main circuit substrate board, insulating barrier the next door is constructed into and can be followed the back of main circuit substrate passes the mounting groove, afterwards by being fixed in the back of main circuit substrate the installation department is fixed on the main circuit substrate board. Therefore, the safety can be improved, and the insulating partition plate is convenient and firm to mount.

According to the utility model discloses a power adapter can make full use of the space through reasonable components and parts overall arrangement on the circuit board to reduce power adapter's whole volume, convenience of customers carries.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. Like reference numerals in the drawings refer to like parts. It will be appreciated by persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the invention without any limiting effect on the scope of the invention, and that the various components in the drawings are not to scale.

Fig. 1 is a schematic perspective view of a power adapter according to a preferred embodiment of the present invention;

fig. 2 is another perspective view of a power adapter according to a preferred embodiment of the present invention;

FIG. 3 is an exploded view of the power adapter according to the preferred embodiment of the present invention;

fig. 4 is a schematic plan view of a power adapter according to a preferred embodiment of the present invention;

fig. 5 is a schematic partial plan view of a power adapter according to another preferred embodiment of the present invention;

fig. 6 is a schematic perspective view of a third circuit board of the power adapter according to the preferred embodiment of the present invention;

fig. 7 is a schematic perspective view of another third circuit board of the power adapter according to the preferred embodiment of the present invention.

Detailed Description

The inventive concept of the present invention will be described in detail below with reference to the accompanying drawings. What has been described herein is merely a preferred embodiment in accordance with the present invention, and those skilled in the art will appreciate that other ways of implementing the present invention on the basis of the preferred embodiment will also fall within the scope of the present invention. In the following detailed description, directional terms, such as "upper", "lower", "front", "rear", and the like, are used with reference to the orientation depicted in the accompanying drawings. The components of embodiments of the present invention can be positioned in a number of different orientations and the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1-3 are schematic perspective and exploded views of a power adapter according to a preferred embodiment of the present invention. As shown in fig. 1 to 3, in the illustrated embodiment, the power adapter 1 mainly includes a main circuit board 2 having a flat plate shape, and a capacitor unit 3, an electromagnetic interference filtering and rectifying assembly 4, an output interface unit 5, and a transformer element 6, which are provided on one surface of the main circuit board 2. The power adapter 1 further comprises a housing (not shown). The main circuit board 2, and the capacitor unit 3, the emi filter and rectifier assembly 4, the output interface unit 5, and the transformer element 6 disposed thereon are mounted in the housing. The housing also mounts a plug (not shown) for connection to an external power source.

The capacitor unit 3 includes a first circuit board 31 electrically connected to the main circuit substrate and a capacitor 32 disposed on a surface of the first circuit board 31. The first circuit board 31 is disposed upright on the surface of the main circuit substrate 2 such that the capacitor 32 extends above the main circuit substrate 2 substantially parallel to the main circuit substrate 2. The main circuit board 2 is used to carry electronic components. The capacitor 32 is mainly used for filtering.

By vertically disposing the first circuit board 31 on the main circuit board 2, that is, by independently disposing the capacitor directly disposed on the main circuit board 2 in a modularized manner and vertically disposing the capacitor, the area of the main circuit board 2 can be reduced, and the space above the main circuit board 2 can be effectively utilized, thereby reducing the overall size of the power adapter 1.

In order to make space efficiency higher and also to facilitate mounting, the first circuit board 31 is vertically disposed on the main circuit substrate 2. It should be understood that the first circuit board 31 may be provided upright on the main circuit substrate 2 in other manners. For example, the first circuit board 31 may be obliquely disposed to the main circuit substrate 2.

As shown in fig. 1 to 3, in the illustrated embodiment, the capacitor unit 3 includes a first group of capacitors 33 and a second group of capacitors 34, the first group of capacitors 33 and the second group of capacitors 34 extending in parallel to the main circuit substrate at different heights above the main circuit substrate 2, respectively. Specifically, as shown in fig. 4, the first group of capacitors 33 and the second group of capacitors 34 include one

capacitance

35 and 36, respectively, and projections of the capacitance 35 in the first group of capacitors 33 and the capacitance 36 in the second group of capacitors 34 in a direction perpendicular to the main circuit substrate 2 are shifted from each other. As shown in fig. 4, the capacitors 35 in the first set of capacitors 33 are relatively small in volume and located at a high height above the main circuit substrate 2, and the capacitors 36 in the second set of capacitors 34 are relatively large in volume and located at a low height above the main circuit substrate 2. By staggering the two capacitors, the height of the capacitor unit 3 can be reduced to accommodate the overall height of the power adapter 1. In some embodiments, projections of the two capacitances in a direction perpendicular to the main circuit substrate 2 may also be aligned with each other. In this manner, the size of the capacitor unit 3 in the direction parallel to the main circuit substrate 2 can be reduced.

As shown in fig. 5, in some embodiments, the first group of capacitors 33 comprises two

capacitors

37 and 38 arranged side by side, the second group of capacitors 34 comprises one capacitor 39, and the capacitor 39 of the second group of capacitors 34 is located between the two

capacitors

37 and 38 of the first group of capacitors 33 as seen in a direction perpendicular to the main circuit substrate. In this way, the height of the capacitor unit 3 can be reduced to accommodate the overall height of the power adapter 1. As shown in fig. 5, the two

capacitors

37 and 38 of the first group of capacitors 33 are relatively small in volume and located at a high height above the main circuit substrate 2, and the capacitor 39 of the second group of capacitors 34 is relatively large in volume and located at a low height above the main circuit substrate 2. The capacitance 39 of the second set of capacitors 34 intersects one 37 of the two

capacitances

37 and 38 of the first set of capacitors 33.

As shown in fig. 3, in the illustrated embodiment, the capacitor unit 3 includes several pins (not shown), the main circuit substrate 2 includes several corresponding insertion holes 21, and the capacitor unit 3 is mounted to the main circuit substrate 2 by inserting the pins into the insertion holes 21. An emi filter and rectifier assembly 4 and an output interface unit 5, which will be described later, are also mounted on the main circuit substrate 2 by means of pins and sockets.

As shown in fig. 3, in the illustrated embodiment, the emi filter and rectifier assembly 4 includes a second circuit board 41 electrically connected to the main circuit board 41, and an emi filter element 42 and a rectifier bridge element 43 disposed on the second circuit board 41, wherein the second circuit board 41 is disposed upright on the surface of the main circuit board 2. The emi filter 42 is mainly used to filter emi, i.e. interference generated by electromagnetic wave and electronic components. The rectifier bridge element 43 is mainly used to convert an ac input into a dc output.

As shown in fig. 2, in the illustrated embodiment, the main circuit board 2 is substantially rectangular, and the emi filter and rectifier assembly 4 is disposed at one corner of the surface of the rectangular main circuit board 2. The transformer element 6 included in the power adapter 1 is disposed at another corner of the surface of the rectangular main circuit substrate 2, and is diagonally arranged with the emi filtering and rectifying component 4 along one diagonal direction M of the rectangle. With such an arrangement, the distance between the rectifying component 4 and the transformer element 6 generating more heat and the electromagnetic interference filtering including the rectifying bridge element 43 generating more heat can be made longer, thereby facilitating the overall heat dissipation of the power adapter 1.

The output interface unit 5 is further described below. As shown in fig. 3, in the illustrated embodiment, the output interface unit 5 includes a third circuit board 51 electrically connected to the main circuit substrate and an output interface 52 provided on the third circuit board 51. The third circuit board 51 is provided upright on the surface of the main circuit substrate 2, and the output interface unit 5 and the capacitor unit 3 are arranged diagonally in the other diagonal direction N (see fig. 2) of the rectangle. Thus, the capacitor unit 3, the emi filter and rectifier assembly 4, the output interface unit 5, and the transformer element 6 are located at four corners of the rectangular main circuit board 2, respectively.

As shown in fig. 3, in the illustrated embodiment, the third circuit board 51 comprises two third circuit boards 51 arranged next to one another and extending parallel to one another and two different types of output interfaces 52 each arranged on a surface of the two third circuit boards 51 facing away from one another. Specifically, the two output interfaces 52 are a type-C interface and a type-a interface, respectively, as shown in fig. 6, the third circuit board 51 provided with the type-C interface is further provided with components such as a protocol chip 53 and a switch MOS transistor 54, and as shown in fig. 7, the third circuit board 51 provided with the type-a interface is further provided with an intelligent identification chip 55 and a DC-DC voltage reduction chip 56. It should be understood that both output interfaces 52 may be type-a interfaces or type-C interfaces, or other output interfaces. The two output interfaces 52 are respectively arranged on the surfaces of the two third circuit boards 51 which are away from each other, so that the two third circuit boards 51 can be closer to each other, and the local space can be more effectively utilized.

As shown in fig. 3, in the illustrated embodiment, the transformer element 6 is spaced apart from the edge 22 of the main circuit substrate 2 by a certain distance to define a certain space 71. In the space 71, the LED lamp 8 may be disposed, and the LED lamp 8 may be disposed upright on the surface of the main circuit substrate 2.

The transformer element 6 includes a flexible connection line (not shown) to be connected to the main circuit substrate 2. The flexible connection line can be disposed in the space 71. Connecting the transformer element 6 to the main circuit substrate 2 in a conventional manner takes up much space, and connecting the transformer element 6 to the main circuit substrate 2 by flexible connection lines makes efficient use of space. As shown in fig. 3, in the illustrated embodiment, the transformer element 6 has a bevel 61, the bevel 61 and the edge 22 of the main circuit substrate 2 also define a space 72, and the flexible connecting line can be disposed in the space 72.

As shown in fig. 3, in the illustrated embodiment, the power adapter 1 further includes an insulating partition 9, and the insulating partition 9 is disposed between the emi filtering and rectifying assembly 4 and the output interface unit 5. The insulating partition 9 includes a partition wall 91 and a mounting portion (not shown) provided perpendicularly to the partition wall 91. The main circuit board 2 is provided with a mounting groove 23. The partition wall 91 of the insulating partition 9 may pass through the mounting groove 23 from the back surface of the main circuit substrate 2. The mounting portion may be fixed to the back surface of the main circuit substrate 2. Thereby, the partition wall can be fixed to the main circuit board. Because the space layout of the power adapter 1 is compact, considering that the power adapter meets the safety standard, an insulating partition plate 9 is arranged between the electromagnetic interference filtering and rectifying component 4 and the output interface unit 5 so as to increase the creepage distance. For mounting convenience, the insulating spacer 9 is mounted from the back surface of the main circuit substrate 2. After the partition 91 is inserted into the mounting groove 23, the mounting portion may abut against the back surface of the main circuit board 2 to fix the insulating spacer 9 to the main circuit board 2 by means of adhesion or the like, and the insulating spacer 9 may be firmly fixed to the main circuit board 2 to prevent the insulating spacer from falling off when being impacted.

Based on the above description, those skilled in the art will appreciate that the benefits of the present invention include, but are not limited to: the components and parts are reasonably arranged, the heat dissipation performance is good, the space is fully utilized, the whole volume of the power adapter is reduced, and the power adapter is convenient for a user to carry.

The scope of protection of the present invention is limited only by the claims. Persons of ordinary skill in the art, having benefit of the teachings of the present invention, will readily appreciate that alternative structures to those disclosed as possible may be substituted for the alternative embodiments disclosed, and that the disclosed embodiments may be combined to create new embodiments, which likewise fall within the scope of the appended claims.

Claims

1. A power adapter, the power adapter comprising:

a main circuit board in a flat plate shape; and

a capacitor unit disposed on one surface of the main circuit substrate, the capacitor unit including a first circuit board electrically connected with the main circuit substrate and a capacitor disposed on a surface of the first circuit board, wherein the first circuit board is disposed upright on the surface of the main circuit substrate such that the capacitor extends above the main circuit substrate substantially parallel to the main circuit substrate.

2. The power adapter as claimed in claim 1, wherein the capacitor unit includes a first set of capacitors and a second set of capacitors, the first set of capacitors and the second set of capacitors extending parallel to the main circuit substrate at different heights above the main circuit substrate, respectively.

3. The power adapter as claimed in claim 2, wherein the first and second sets of capacitors each include a capacitance, and projections of the capacitances in the first and second sets of capacitors in a direction perpendicular to the main circuit substrate are aligned with or offset from each other.

4. A power adapter as claimed in claim 2, wherein the first set of capacitors comprises two capacitors arranged side by side, the second set of capacitors comprises one capacitor, and the capacitance of the second set of capacitors is located between two capacitors of the first set of capacitors and intersects at least one of them as seen in a direction perpendicular to the main circuit substrate.

5. The power adapter as claimed in any one of claims 1-4, further comprising an EMI filtering and rectifying assembly, the EMI filtering and rectifying assembly comprising a second circuit board electrically connected to the main circuit substrate, and an EMI filtering element and a rectifying bridge element disposed on the second circuit board, the second circuit board being disposed upright on the surface of the main circuit substrate.

6. The power adapter as claimed in claim 5, wherein the main circuit substrate is substantially rectangular, and further comprising a transformer element disposed on the surface of the main circuit substrate and arranged along one diagonal direction of the rectangle with the EMI filtering and rectifying assembly.

7. The power adapter as claimed in claim 6, further comprising an output interface unit including a third circuit board electrically connected to the main circuit substrate and an output interface provided on the third circuit board, the third circuit board being provided upright on the surface of the main circuit substrate, and the output interface unit and the capacitor unit being arranged in the other diagonal direction of the rectangle.

8. The power adapter as claimed in claim 7, wherein the third circuit board comprises two third circuit boards arranged next to each other and extending parallel to each other and two output interfaces respectively arranged on surfaces of the two third circuit boards facing away from each other.

9. The power adapter as claimed in claim 8, further comprising an LED lamp provided upright on the surface of the main circuit substrate, the LED lamp being disposed in a space formed by the transformer element and an edge of the main circuit substrate.

10. The power adapter as claimed in claim 9, further comprising an insulating spacer disposed between the emi filtering and rectifying module and the output interface unit, the insulating spacer including a partition wall and a mounting portion disposed perpendicular to the partition wall, the main circuit board having a mounting groove provided thereon, the partition wall of the insulating spacer being configured to pass through the mounting groove from a rear surface of the main circuit board and then be fixed to the main circuit board by the mounting portion fixed to the rear surface of the main circuit board.