CN201656459U

CN201656459U - Power conversion device with discharge-preventing and controlling shield positioning structure

Info

Publication number: CN201656459U
Application number: CN2010201522203U
Authority: CN
Inventors: 李博胜
Original assignee: Chicony Power Technology Co Ltd
Current assignee: Chicony Power Technology Co Ltd
Priority date: 2010-03-26
Filing date: 2010-03-26
Publication date: 2010-11-24
Anticipated expiration: 2020-03-26

Abstract

The utility model relates to a power conversion device with a discharge-preventing and controlling shield positioning structure. The bottom surface of a circuit board with a power connector is struck with an insulating shield, and the outer side of the insulating shield is provided with a metal covering slice. One side edge of the metal covering slice far away from the power connector is molded with a bending part. One end of the insulating shield is butted and positioned on the bending part, so that the other end is exposed out the metal covering slice for a certain distance. A shell is covered at the outer side of the metal covering slice. The insulating shield is positioned and exposed out the metal covering slice for a certain safe distance, so that the effect of discharge preventing and controlling is reached.

Description

The power supply change-over device of the bluff piece location structure of the anti-system of tool discharge

Technical field

The utility model is relevant with supply unit, is particularly to a kind of anti-system of discharge structure of power supply changeover device.

Background technology

Discharge (Discharge) is a kind of recurrent in daily life electron ion induced phenomenon, though its generation time is to short (ns), but under some environmental condition, still can cause damage to personnel and electronic component, owing to the situation that the reason of electronic product generation problem is often punched, burns, destroyed by discharging, protect the major subjects that has obviously become each big Electronics Factory of the whole world so discharge.

At present in electronic applications, stipulating of existing many relevant specification limits values of the protection of relevant discharge and checking measurement method, to avoid discharge to destroy electronic product, in addition, current electronic product, protection for discharge can be accomplished in several ways, with the power connector (power adapter) that is used for notebook computer is example, its insulation shell inside is equiped with a circuit board, one insulating trip and a metal shield (shielding, as the usefulness of covering electromagnetic noise and heat radiation), wherein, this insulating trip is arranged between this thin metal coverboard and this circuit board, to be used to avoid phase of solder joint mutual conductance on this metal shield and this circuit board to connect and cause short circuit, yet, because the solder joint on this circuit board still has the doubt that produces electric arc (arcing), therefore, according to the security regulations of discharge protection, this insulating trip needs emergence to go out side one preset distance of this thin metal coverboard, make this thin metal coverboard and this circuit board possess a safe distance, can reach discharge protection effect.

Hold above-mentioned, be fixed on after this thin metal coverboard becomes semi-finished product at this insulating trip, often need be transferred to the elsewhere and other semi-finished product are assembled mutually, yet, because this insulating trip is fixed on this thin metal coverboard in the mode of pasting usually, in the process of transporting, often, collision is shifted because of making the relative distance between this insulating trip and this thin metal coverboard, and then cause the regulation of protection that can't meet discharge safety, and not only reduced rate of finished products, improved manufacturing cost again.

The utility model content

A purpose of the present utility model is to provide a kind of tool discharge to prevent the power supply change-over device of the bluff piece location structure of system, makes the insulating shield emergence go out metal matte one safe distance, to reach the effect of the anti-system of discharge.

In order to reach above-mentioned purpose, the utility model provides the power supply change-over device of the bluff piece location structure of the anti-system of a kind of tool discharge, comprise a circuit board, an insulating shield, a metal matte and a housing, one end of circuit board has a power connector, insulating shield is sticked in the bottom surface of circuit board, the metal matte is arranged on the outside of insulating shield, the metal matte forms a kink at the side away from power connector, and an end of insulating shield retaining supports and is positioned on the kink, so that other end emergence goes out the metal matte one distance is arranged.

Another purpose of the present utility model is to provide a kind of tool discharge to prevent the power supply change-over device of the bluff piece location structure of system, establishes rate of finished products with the group that improves product, and can reduce manufacturing cost.

Compared to known technology, supply unit of the present utility model forms a kink in a side of its metal matte, when being sticked insulating shield, the one end retaining of insulating shield is supported and is positioned on the kink, so that other end emergence goes out the distance that the metal matte has 5mm at least, so as to meeting the regulation of protection of discharge safety, the finished product rate when raising group is in view of the above established, can reduce manufacturing cost again, increase practicality of the present utility model.

Description of drawings

Fig. 1 is the part perspective exploded view of the utility model supply unit;

Fig. 2 is the semi-finished product figure of the utility model supply unit;

Fig. 3 is half-finished end view of the utility model supply unit;

Fig. 4 is half-finished part three-dimensional exploded view of the utility model supply unit; And

Fig. 5 is half-finished three-dimensional exploded view of the utility model supply unit.

Wherein, Reference numeral

1 supply unit

10 circuit boards, 11 power connectors

12 power leads, 20 insulating shields

30 tacky on two sides, 40 metal mattes

400 kinks, 401 second kinks

41 first metal mattes, 411 base plates

412 first side plates, 4120 projections

42 second metal mattes, 421 cover plates

422 second side plates, 4220 flutings

50 housings, 51 upper shells

52 lower house H distances

A thickness B width

Embodiment

Relevant detailed description of the present utility model and technology contents, conjunction with figs. is described as follows, however appended accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.

Please refer to Fig. 1 to Fig. 5, the power supply change-over device 1 of the bluff piece location structure of the anti-system of tool discharge of the present utility model includes a circuit board 10, an insulating shield 20, one two-sided viscose glue 30, a metal matte 40 and a housing 50.

This circuit board 10 is provided with a plurality of electronic components, and an end of this circuit board 10 has a power connector 11, and the other end is a power lead 12.

This insulating shield 20 can be a mylar film (Mylar), and it is sticked in the bottom surface of this circuit board 10, is provided with this metal matte 40 again in the outside of this insulating shield 20, and a side of this metal matte 40 forms a kink 400; In the present embodiment, this metal matte 40 comprises one first metal matte 41 and covers the one second metal matte 42 that closes mutually with this first metal matte 41, this first metal matte 41 comprises a base plate 411 and reaches from vertically extending two first side plates 412 of these base plate 411 dual side-edges, one side of one of them of these two first side plates 412 forms this kink 400, and form a projection 4120 on this first side plate 412, in the present embodiment, this projection 4120 is molded over respectively on one first side plate 412 with this kink 400.

Moreover, this second metal matte 42 comprises a cover plate 421 and reaches from vertically extending 2 second side plates 422 of 421 2 sides of this cover plate, one side of one of them of this 2 second side plate 422 also forms one

second kink

401, and 422 pairs of this second side plates should first side plate 412 projection 4120 and be provided with a fluting 4220, this projection 4120 fixes in this fluting 4220, fix to make this first metal matte 41 and this second metal matte 42 mutual clips, at this moment, second kink 401 of this second metal matte 42 can be against on first side plate 412 of this first metal matte 41 by retaining, so that this second metal matte 42 is positioned on this first metal matte 41.

More include a two-sided viscose glue 30 between this first metal matte 41 and this insulating shield 20, this first metal matte 41 is fixed on this insulating shield 20 by this tacky on two sides 30, the one end retaining of this insulating shield 20 supports and is positioned on this kink 400, so that other end emergence goes out this first metal matte 41 distance H is arranged, this distance H is more than the 5mm, to meet the regulation of protection of discharge safety.

The shape of this insulating shield 20 is to should the first metal matte 41 and be provided with, in the present embodiment, the cross section of this insulating shield 20 roughly is the U font, and these insulating shield 20 retainings are against, and shared width ratio is approximately 1/5th on this kink 400, reaching the preferred positioning effect, that is, when these insulating shield 40 thickness are A, when the width of 400 bendings of this kink was B, the ratio of A and B was 1: 5.

Moreover this housing 50 is made up of a upper shell 51 that covers mutually and a lower house 52, and this upper shell 51 and lower house 52 can utilize the ultrasonic waves fusing mode to engage.When group is established, earlier this tacky on two sides 30 is sticked on the base plate 411 of this first metal matte 41, end retaining with this insulating shield 20 supports and is positioned on this kink 400 again, then circuit board 10 is placed on this insulating shield 20, in addition these second metal matte, 42 clips are fixed on this first metal matte 41, at last, these semi-finished product are placed in this lower house 52, and combine with ultrasonic waves welding mode and this upper shell 51, promptly finish the power supply change-over device 1 of the bluff piece location structure of the anti-system of the utility model tool discharge.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.

Claims

1. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge is characterized in that, comprising:

One circuit board, an end of this circuit board has a power connector;

One insulating shield is sticked in the bottom surface of this circuit board;

One metal matte, be arranged on the outside of insulating shield, this metal matte forms a kink at the side away from this power connector, and an end of this insulating shield retaining supports and be positioned on this kink, so that other end emergence goes out this metal matte one distance is arranged; And

One housing is coated on the outside of this metal matte.

2. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 1 is characterized in that this insulating shield is a mylar film.

3. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 1 is characterized in that it is 1/5th that this insulating shield retaining is against the shared width ratio of this kink.

4. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 1, it is characterized in that, this metal matte comprises one first metal matte and covers the one second metal matte that closes mutually with this first metal matte, and this first metal matte and the mutual clip of this second metal matte are fixed.

5. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 4, it is characterized in that, more include a two-sided viscose glue between this first metal matte and this insulating shield, this first metal matte is fixed on this insulating shield by this tacky on two sides.

6. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 4 is characterized in that this first metal matte is sticked in the inboard of this insulating shield.

7. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 4, it is characterized in that, this first metal matte comprises a base plate and from vertically extending two first side plates of this base plate dual side-edge, a side of one of them of these two first side plates forms this kink.

8. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 7, it is characterized in that, this second metal matte comprises a cover plate and reaches from vertically extending two second side plates of two sides of this cover plate, one side of one of them of these two second side plates forms one second kink, and this second kink retaining is against on this first side plate.

9. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 8, it is characterized in that, form a projection on this another first side plate, this second side plate is to should projection and be provided with a fluting, this projection fixes in this fluting, to make this first metal matte and the mutual clip of this second metal matte.

10. the power supply change-over device of the bluff piece location structure of the anti-system of tool discharge according to claim 1 is characterized in that this distance is more than the 5mm.