CN2266731Y

CN2266731Y - Radiation apparatus for power switch

Info

Publication number: CN2266731Y
Application number: CN 96222674
Authority: CN
Inventors: 吴志贤
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-05
Filing date: 1996-09-05
Publication date: 1997-11-05
Anticipated expiration: 2006-09-05

Abstract

The utility model relates to a heat radiation apparatus for a power transducer, which is composed of a molding outer casing, a front closing board, a rear closing board, circuit board elements and a bottom board, wherein, the molding outer casing is provided with heat radiation branch sheets, and positioning slots and screw holes are arranged at the center of the top part of the inner wall surface of the outer casing; two opposite slide slots are arranged at the extending near end of a side board; slotting type screw holes are arranged at an inner turning corner part and the extending end of the side board; the front closing board provided with a socket, the rear closing board provided with plug wires, fuses and an exhaust fan are respectively and fixedly locked on slotting type screw holes at the front and the rear parts; circuit elements are clamped in slide slots in a slide way, and a heat transmission sheet with a bend right angle is welded and fixed on the circuit board; screw holes arranged on a central lug of the circuit board are butted in positioning slots in a sliding way; screws are locked into the outer casing in a binding way to transfer average heat to the outer casing, and airflow is guided by the exhaust fan to be cooled at the inner surface of the heat radiation outer casing.

Description

The power supply changeover device heat abstractor

The utility model relates to the ac/Dc power converter, especially the heat abstractor that refers to power supply changeover device, be meant that especially a kind of heating portion that changes power supply changeover device touches the position that subsides combine with outer casing, it can be reached is spread on each radiator fin uniformly, improve and enlarge its area of dissipation with rapid cooling, and both sides of heat-conducting plate form the heat dissipation wind channel of circulation of air, the heat abstractor of the heat radiation function of tool the best in it.

The fast development of computer now drives continuous expansion, the prosperity of computer peripheral device, as disk drive, interface card, the compatible body of computer, computer private jack and power supply changeover device ... Deng; Wherein with this power supply changeover device, the contribution of computer equipment is converted to direct current work for being used for alternating current, it is the power source of one-piece computer, popular especially at present portable mini computer, the application of power supply changeover device is important especially.

Moreover, in advanced countries such as Europe, the United States, quite pay attention to stress-relieving activity at home in its life style, with as a chance of unfolding body and mind after moiling, the mode of its leisure mostly is carries out outdoor activities, but is in the countryside, and its power supply has only the direct current that battery was equipped with on the vehicle, use as indoor ac electric apparatus product will produce difficulty because of lacking alternating voltage as desire, therefore generation of the present utility model is that to be transformed to alternating current with the mat direct current be purpose.

Existing ac/Dc power converter, (Fig. 1 is the cutaway view of existing power supply converter) as shown in Figure 1, it has a shell 100, one circuit board 102 that comprises the power supply transformation is embedded at 104 of two chutes, one heat transfer sheet 106 is fixedly welded on the side of circuit board 102, mat one spiral shell spare 108 makes the heat transfer sheet 106 of pyrotoxin lower the temperature with ventilation type so that the heat energy diffusion is come because of touching with subsides in shell 100 in the solid heat transfer sheet 106 of the sidepiece spiral shell of housing.

As above-mentioned existing power supply converter heat radiation conduction pattern, still there is following shortcoming, be that its heat transfer sheet 106 adopts the monolateral shell 100 that is contacted with the tool heat sinking function, so the temperature of its shell limit 100a will be higher than the temperature of opposite side 100b always, though the air blowing of radiator fan is arranged on its power supply changeover device, right this phenomenon does not change because of air-flow only circulates among the 100c of sky chamber, is the phenomenon of a heat conduction inequality, and it is not obvious to form cooling effect indirectly.

Because still have above-mentioned shortcoming in the existing power supply changeover device heat-dissipating structure design,, generation of the present utility model is arranged then so the creator improves at these Study of Defects.

The purpose of this utility model aims to provide a kind of power supply changeover device heat abstractor of better heat-radiation effect, this radiating part structure system is by between heat-conducting plate and ventilation type housing case, the thermal conductivity points of closing of signing an undertaking is formed at the housing center upper portion, the fuel factor of diffusion can be reached evenly and perfect condition rapidly, the both sides between inner heat-conducting plate and shell wall of while are the cooling airway that remains with sky, and the suction air-flow of mat ventilating fan is to reach best cooling effect.

For reaching above-mentioned purpose, the utility model power supply changeover device heat abstractor is that setting includes an outer casing, preceding shrouding, afterwards shrouding, circuit board component and a base plate are formed; Wherein, outer surface in outer casing is provided with the divergent sheet that increases area of dissipation, inner face top system of central authorities establishes locating slot and screw, two subtends and the chute established be one-body molded is located at the proximal end place that the shell side plate extends, and inside lock portion and side plate extending end tool thereof are provided with the open flume type screw, order is equiped with the preceding shrouding of socket, be equiped with the plug electric wire, the back shrouding of fuse and ventilating fan, be locked on the open flume type screw of front and rear part with screw respectively, its circuit board component is sliding in chute for card, the rectangular heat transfer sheet of solid welding one bending on its plate, establish screw on the heat transfer sheet central authorities projection, be butted in the locating slot with its projection cunning, lock with screw and to reach in conjunction with developing soaking and conduct in outer casing to touch, and mat ventilating fan bleed stream cools off in the inner face of heat radiation outer casing, tool is refrigerating function fast and effectively.

Below in conjunction with accompanying drawing the utility model is described in further details:

Fig. 1 is the cutaway view of existing power supply converter;

Fig. 2 is a structure decomposition map of the present utility model;

Fig. 3 is the cutaway view of the utility model structure;

Fig. 4 is the utility model outer casing structure section schematic diagram.

As shown in Figure 1, it is the cross-sectional sectional schematic diagram of an existing power supply converter, its heat-dissipating structure for monolateral contact to conduct heat energy, so the inhomogeneous cooling effect that causes of described heat sinking function is poor, has described in detail no longer superfluous old in preceding.

Consulting Fig. 2, is the structure decomposition map of the utility model power supply changeover device, discloses the utility model system among the figure and is made up of outer casing 1, preceding shrouding 2, back shrouding 3, circuit board component 4 and a base plate 5; Wherein:

This outer casing 1, consult Fig. 4, central authorities are formed with a locating slot 11 in the internal face top, reach and in its groove, be provided with several screws 12, two be subtend, parallel be to be located at the proximal end place that side plate extends to the chute 13 that is provided with, two A of inside lock portion, B place and side plate extending end thereof respectively are provided with open

flume type screw

14,15.

Preceding shrouding 2 is equiped with 21, four jiaos of end places of socket and establishes screw 22 on it, mat screw 23 can be locked on its anterior open

flume type screw

14,15.

Back shrouding 3 is equiped with plug electric wire 31, fuse 32 and ventilating fan 33 on it, establish screw 34 in four jiaos of end places of back shrouding 3, and mat screw 35 can be locked on its rear portion open

flume type screw

14,15.

And circuit board component 4, the width of its plate is suitable with two chutes, 13 spacings, is positioned in two chutes 13 with the circuit-board card cunning, and the rectangular heat transfer sheet 41 of solid welding one bending on its plate, the central authorities of heat transfer sheet 41 form a projection 42, engrave on this projection and establish screw 43.

Base plate 5 is the screw 51 of a platysome and four jiaos of ends of tool, can be locked in the bottom of outer casing 1.

During combination, system with the plate body both side edges card cunning of its circuit board component 4 in chute 13, and make projection 42 clamped being fastened in the locating slot 11 of its heat transfer sheet 41, by passing screw 12,43 outward, make heat transfer sheet 41 and heat radiation outer casing 1 keep pasting the state that touches on screw 6 with locking.

So, the heat energy of this heat transfer sheet 41 is outwards satisfied via the contact of outer casing 1 evenly diffusion, and it can possess preferable heat sinking function because of central portion forms contact point but not belongs to monolateral diffusion.

Moreover, consult shown in Figure 3, it is the sectional schematic diagram after the utility model combination, by diagram as can be known, power supply changeover device heat abstractor of the present utility model, it is located at the upper end because of heat transfer sheet 41 and outer casing 1 linking part, so its

inwall

16 and 41 of heat transfer sheets are to form cooling air channel x, the y that connects, via the ventilating fan 33 of back on the shrouding 3 by outer suction cold air to circulate among passage x, the y, satisfy the superpower cooling effect of tool, have more preferable radiating effect.

In sum, the utility model power supply changeover device heat abstractor, really can improve via unprecedented joint portion, after the combination of each member, reaches thermal energy conduction is diffused to average state, and the heat transfer sheet of its heating all forms the cooling duct of air in periphery, on the technological means for innovating in the past, reach best heat radiation function, have practical value.

Claims

1, a kind of power supply changeover device heat abstractor is made up of an outer casing, preceding shrouding, back shrouding, circuit board component and a base plate; It is characterized in that:

This outer casing is that system is set as tool one moulding shape, and central authorities are provided with the location division in the inwall top, and two chutes are formed at the inwall both sides, are provided with the open flume type screw in inside lock portion and side plate extending end thereof;

Shrouding before being somebody's turn to do is equiped with socket aperture on it, appropriate location is established the front end of screw with the locking outer casing on the plate;

This back shrouding is equiped with appropriate location on plug electric wire, fuse and the ventilating fan plate and establishes the rear end of screw with the locking outer casing on it;

This circuit board component, solid welding one heat transfer sheet on its plate is established fixing the subsides and is touched structure and make with outer casing and link in its heat transfer sheet top;

This base plate is established the tool screw in four jiaos of end places, and mat spiral shell spare can be locked in the outer casing bottom;

When circuit board component is positioned in two chutes with its plate body card cunning, and the location that makes its heat transfer sheet top is pasted and is touched the location division that structure is incorporated into outer casing inwall top central authorities, preceding shrouding and back shrouding are locked in the open flume type screw of outer casing front and back end, base plate are locked in the bottom of outer casing again.

2, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: this outer casing inwall pushes up location division of central authorities, comprises by a locating slot and screw to combine.

3, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: the outer surface of this outer casing is provided with most radiator fins.

4, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: mode that described two chutes form is a subtend.

5, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: the mode that described two chutes form be parallel to.

6, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: described open flume type screw, one-body moldedly when it is established by outer casing system formed to extend narrow wall, and can make spiral shell spare be screwed into to cooperate locking.

7, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: the right angle heat transfer sheet of solid welding on this circuit board component, it is that bending is rectangular.

8, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: the right angle heat transfer sheet of solid welding on this circuit board component, its top are established fixing the subsides and are touched structure and comprise a projection and screw.

9, a kind of power supply changeover device heat abstractor as claimed in claim 1 is characterized in that: when the location division that is incorporated into outer casing inwall top central authorities is touched in the subsides of location, heat transfer sheet top, be formed with gas-permeable channels between its coverboard inwall and heat transfer sheet plate, in order to cooling.