CN111698891A - Power adapter with radiating fins - Google Patents

Abstract

The invention relates to the technical field of power adapters, in particular to a power adapter with heat sinks, comprising a casing and a PCB board arranged in the casing; the top of the PCB board is provided with a first heat sink; The bottom is provided with a second heat sink; the bottom of the first heat sink and the top of the second heat sink are provided with locking pieces; the PCB board is provided with a locking groove; the locking piece and the locking groove connection; the first heat sink is provided with a accommodating cavity; the first heat sink is provided with a heat dissipation hole; the second heat sink includes a heat dissipation body and an insulating sheet covering the top of the heat dissipation body; the top of the insulating sheet is provided with There is a heat-conducting sheet; the heat-conducting sheet abuts against the bottom of the PCB board. In the present invention, the first heat sink and the second heat sink are respectively arranged on the top and bottom of the PCB board, thereby effectively dissipating the heat of the heat source on the PCB board and preventing the power adapter from being damaged due to high temperature.

Description

A power adapter with heat sink

technical field

The invention relates to the technical field of power adapters, in particular to a power adapter with heat sinks.

Background technique

At present, some electronic components of the power adapter will generate excess heat energy more or less when the power adapter is working. This component will be damaged due to excessive temperature and the entire product will be scrapped. Therefore, a heat sink is required to dissipate the heat energy in the heat-generating electronic components, and heat sinks are widely used in power supplies and adapters; however, the current power adapters have the problem of insufficient heat dissipation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a power adapter with a heat sink in view of the above deficiencies in the prior art.

The object of the present invention is achieved through the following technical solutions: a power adapter with a heat sink, comprising a housing and a PCB board arranged in the housing; a first heat sink is provided on the top of the PCB board; The bottom is provided with a second heat sink; the bottom of the first heat sink and the top of the second heat sink are provided with locking pieces; the PCB board is provided with a locking groove; the locking piece and the locking groove connect;

The first heat sink is provided with an accommodating cavity; the first heat sink is provided with a heat dissipation hole communicating with the accommodating cavity; the second heat sink includes a heat dissipation body and an insulating sheet covering the top of the heat dissipation body; the insulation The top of the sheet is provided with a heat-conducting sheet; the heat-conducting sheet abuts against the bottom of the PCB board.

The present invention further provides that the housing includes a lower cover and an upper cover that is detachably connected to the lower cover; the upper cover is provided with a sealing ring.

In the present invention, the heat dissipation hole is further provided on the top of the first heat dissipation fin; the side part of the first heat dissipation fin is provided with screw holes.

According to the present invention, the number of the first heat sinks is two; the two first heat sinks are respectively arranged on both sides of the PCB board.

The present invention further provides that the material of the first heat sink is a metal aluminum plate.

The present invention further provides that the material of the insulating sheet is plastic; the material of the thermally conductive sheet is silica gel.

According to the present invention, the locking member includes a plug-in body; one end of the plug-in body is extended with a first elastic arm and a second elastic arm oppositely arranged; the first elastic arm is away from the side of the second elastic arm A first clamping block is provided; a side of the second elastic arm away from the first elastic arm is provided with a second clamping block.

The present invention further provides that the plug-in body is provided with riveting holes; the plug-in body is riveted to the first heat sink and the second heat sink through the riveting holes.

Beneficial effects of the present invention: the present invention can effectively dissipate the heat of the heat source on the PCB board by setting the first heat sink and the second heat sink on the top and bottom of the PCB board, preventing the power adapter from being damaged due to high temperature .

Description of drawings

The invention will be further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, under the premise of no creative work, other Attached.

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structure exploded view of the present invention;

3 is a schematic structural diagram of a first heat sink of the present invention;

4 is a schematic structural diagram of a second heat sink of the present invention;

5 is a schematic structural diagram of the second heat sink of the present invention from another perspective;

Fig. 6 is the structural representation of the locking member of the present invention;

Among them: 11, upper cover; 12, lower cover; 2, PCB board; 3, first heat sink; 31, accommodating cavity; 32, heat dissipation hole; 33, screw hole; 4, second heat sink; 41, heat dissipation body; 42, insulating sheet; 43, thermally conductive sheet; 5, locking piece; 6, plug-in body; 61, first elastic arm; 62, second elastic arm; 71, first block; 72, second block ; 8, sealing ring; 9, riveting hole.

Detailed ways

The present invention will be further described with reference to the following examples.

It can be seen from FIGS. 1 to 6 that a power adapter with a heat sink described in this embodiment includes a housing and a PCB board 2 arranged in the housing; the top of the PCB board 2 is provided with a first heat sink 3; the bottom of the PCB board 2 is provided with a second heat sink 4; the bottom of the first heat sink 3 and the top of the second heat sink 4 are provided with locking members 5; Locking groove; the locking piece 5 is connected with the locking groove; the locking groove is not shown in the figure;

The first heat sink 3 is provided with an accommodating cavity 31 ; the first heat sink 3 is provided with a heat dissipation hole 32 communicating with the accommodating cavity 31 ; the second heat sink 4 includes a heat dissipation body 41 and a cover heat dissipation body 41 The insulating sheet 42 on the top; the top of the insulating sheet 42 is provided with a thermally conductive sheet 43 ; the thermally conductive sheet 43 abuts against the bottom of the PCB board 2 .

Specifically, in the power adapter with heat sink described in this embodiment, the PCB board 2 , the first heat sink 3 and the second heat sink 4 are all arranged in the housing, and the first heat sink 3 is locked by the locking member 5 . In the locking groove, the first heat sink 3 is fixed on the top of the PCB board 2, so that the heat source on the PCB board 2 is placed in the accommodating cavity 31, and the heat source on the PCB board 2 and the first heat sink are The inner side of the fins 3 is closely attached, thereby achieving the effect of heat dissipation, and the heat dissipation effect of the first fins 3 can be increased by setting the cooling holes 32 through the first fins 3;

Secondly, the second heat sink 4 is locked in the locking groove by the locking member 5, so that the second heat sink 4 is fixed on the bottom of the PCB board 2, and the heat conduction sheet 43 is in close contact with the heat source on the PCB board 2 so that the The heat is transmitted to the heat dissipation body 41 to dissipate heat. In addition, since the bottom of the PCB board 2 is welded with the pins of the electronic components, in order to prevent the short circuit between the second heat sink 4 and the electronic components, the heat dissipation body 41 is placed on the bottom of the heat dissipation body 41. The top is covered with insulating sheet 42 .

In the power adapter with cooling fins described in this embodiment, the housing includes a lower cover 12 and an upper cover 11 detachably connected to the lower cover 12 ; the upper cover 11 is provided with a sealing ring 8 . The above arrangement is convenient for disassembly, assembly and maintenance of the casing; the sealing ring 8 plays a waterproof role.

In the power adapter with heat sinks described in this embodiment, the heat dissipation holes 32 are arranged on the top of the first heat sink 3; the above arrangement can improve the heat dissipation effect of the first heat sink 3; the first heat sink 3 The side of 3 is provided with screw holes 33 . By providing the screw holes 33 , it is convenient for the first heat sink 3 to be fixed and tightly attached to the heat source on the PCB board 2 .

In the power adapter with heat sinks described in this embodiment, the number of the first heat sinks 3 is two; the two first heat sinks 3 are respectively disposed on both sides of the PCB board 2 . The above arrangement can further improve the heat dissipation effect of the power adapter.

In the power adapter with heat sinks described in this embodiment, the material of the first heat sink 3 is a metal aluminum plate. The above arrangement can further improve the heat dissipation effect of the power adapter.

In the power adapter with a heat sink described in this embodiment, the material of the insulating sheet 42 is plastic; the material of the heat conducting sheet 43 is silica gel. The above arrangement can improve the heat conduction effect of the heat conduction sheet 43 .

In the power adapter with cooling fins described in this embodiment, the locking member 5 includes a plug-in body 6; one end of the plug-in body 6 is extended with a first elastic arm 61 and a second elastic arm 62 arranged oppositely The side of the first elastic arm 61 away from the second elastic arm 62 is provided with a first block 71 ; the side of the second elastic arm 62 away from the first elastic arm 61 is provided with a second block 72 .

Specifically, by arranging the first elastic arm 61 and the second elastic arm 62 , the locking member 5 can be inserted smoothly in the process of being inserted into the locking groove of the PCB board 2 . The blocking block 71 and the second blocking block 72 of the second elastic arm 62 are rebounded, so that the first blocking block 71 and the second blocking block 72 can be firmly fastened to the locking groove of the PCB board 2, so that the entire product can be produced during production. During the process, the first heat sink 3 and the second heat sink 4 will not fall off and displace.

In the power adapter with heat sinks described in this embodiment, the socket body 6 is provided with riveting holes 9 ; the socket body 6 is riveted to the first heat sink 3 and the second heat sink 4 through the riveting holes 9 . The above arrangement is convenient for production.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that , the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims (8)

1. A power adapter with a heat sink, characterized in that: it comprises a housing and a PCB board (2) arranged in the housing; the top of the PCB board (2) is provided with a first heat sink (3); The bottom of the PCB board (2) is provided with a second heat sink (4); the bottom of the first heat sink (3) and the top of the second heat sink (4) are provided with locking pieces (5); A locking groove is provided through the PCB board (2); the locking member (5) is connected with the locking groove; The first radiating fin (3) is provided with an accommodating cavity (31); the first radiating fin (3) is provided with a radiating hole (32) communicating with the accommodating cavity (31); the second radiating fin (4) comprising a heat dissipation body (41) and an insulating sheet (42) covering the top of the heat dissipation body (41); the top of the insulating sheet (42) is provided with a heat conducting sheet (43); the heat conducting sheet (43) is connected to the PCB The bottom of the plate (2) abuts. 2. The power adapter with heat sink according to claim 1, wherein the housing comprises a lower cover (12) and an upper cover (11) detachably connected to the lower cover (12); The upper cover (11) is provided with a sealing ring (8). 3. A power adapter with a heat sink according to claim 1, characterized in that: the heat dissipation hole (32) is arranged on the top of the first heat sink (3); the first heat sink (3) ) is provided with a screw hole (33) on the side. 4. A power adapter with heat sinks according to claim 1, characterized in that: the number of the first heat sinks (3) is two; the two first heat sinks (3) are respectively arranged in Both sides of the PCB board (2). 5 . The power adapter with heat sinks according to claim 1 , wherein the material of the first heat sink ( 3 ) is a metal aluminum plate. 6 . 6 . The power adapter with heat sink according to claim 1 , wherein the insulating sheet ( 42 ) is made of plastic; the thermal conductive sheet ( 43 ) is made of silica gel. 7 . 7 . The power adapter with heat sink according to claim 1 , wherein the locking member ( 5 ) comprises a plug-in body ( 6 ); one end of the plug-in body ( 6 ) extends with opposite A first elastic arm (61) and a second elastic arm (62) are provided; a first clamping block (71) is provided on the side of the first elastic arm (61) away from the second elastic arm (62); the A second blocking block (72) is provided on the side of the second elastic arm (62) away from the first elastic arm (61). 8. The power adapter with heat sink according to claim 1, characterized in that: the plug-in body (6) is provided with a riveting hole (9); the plug-in body (6) passes through the riveting hole (9). ) are riveted to the first heat sink (3) and the second heat sink (4).

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