CN102981589A

CN102981589A - Power adapter

Info

Publication number: CN102981589A
Application number: CN2012104767738A
Authority: CN
Inventors: 毕东涛; 黄伟明
Original assignee: 王奉瑾
Priority date: 2012-11-21
Filing date: 2012-11-21
Publication date: 2013-03-20
Anticipated expiration: 2032-11-21
Also published as: CN102981589B

Abstract

The invention relates to the design field of power adapters, and particularly relates to a heat radiation structure design of a power adapter. In order to improve the problem of the heat radiation of the power adapter, the invention provides a power adapter which comprises a shell, wherein the shell is provided with a cavity for holding a circuit board, the cavity comprises a main cavity and one or more auxiliary cavities extending from the main cavity, the main cavity is mutually communicated with the auxiliary cavities, and the circuit board comprises a main body board arranged in the main cavity and auxiliary boards arranged in the auxiliary cavities. According to the power adapter provided by the invention, electronic components in the power adapter can be dispersedly arranged in the main cavity and the auxiliary cavities, and therefore the heat generated by the electronic components is easily dispersed. In addition, in order to prevent the heat from accumulating in joints between the main cavity and the auxiliary cavities, the main cavity is mutually communicated with the auxiliary cavities, and the integrity of the cavities is maintained for avoiding causing heat radiation dead angles.

Description

Power supply adaptor

Technical field

The present invention relates to the design field of power supply adaptor, relate in particular to the radiator structure design of power supply adaptor.

Background technology

For whole notebook computer, the importance of power supply is lower than CPU anything but, and the stable magnitude of voltage that provides that power supply continues is provided in the stable operation of whole notebook computer.Because notebook computer generally adopts direct supply to drive, and the power supply that the user adopts AC power normally adopt 220 volts alternating current such as China, so notebook computer can be equipped with a power supply adaptor usually.The basic functional principle of power supply adaptor is to convert High Level AC Voltage (such as 220 volts alternating current) to notebook computer required low-voltage DC by the HF switch technology.In alternating current and galvanic transfer process, because the restriction of state-of-the art and the characteristic of electronic devices and components itself, the energy of understanding some becomes heat energy, distributes among air with the form of heat, and it gives the sensation of high temperature.In addition, power supply adaptor is worked under high-temperature condition and can be reduced to some extent than serviceability under the normal temperature, is mainly reflected in output power and reduces.

Because the integrated level of electronic devices and components is more and more higher, function is also more and more stronger, reduced so that originally take than the physical dimension of the electronic equipment of the large space form with the order of magnitude, but the thermal value of unit volume is increasing.As seen in electronic devices and components miniaturization, the integrated process, its heat dissipation problem highlights.As a rule, the operating temperature range of electronic devices and components is between-5 ~ 65 degree.When temperature surpassed above-mentioned scope, the degree of accuracy of electronic devices and components, degree of stability also had the performances such as resistance, appearance value and sense value of all kinds of electronic components all will significantly to descend, even can't steady operation, affected the most at last the whole system reliability of operation.Some electronic component of power supply adaptor is damaged, cause the mistake of power supply adaptor to decrease.

In summary, the heat dissipation problem of power supply adaptor has become a bottleneck in the power supply adaptor design gradually.

Summary of the invention

The object of the invention is to overcome the defective of prior art, aim to provide the power supply adaptor with better heat dispersion.

The present invention realizes like this, power supply adaptor, comprise housing, described housing has the chamber of accommodating circuit board, the surface of described housing is provided with the pin of external power supply, described chamber comprises main chamber and by the extended one or more secondary cavities of described main chamber, described main chamber and each described secondary cavity are interconnected; Described circuit board comprises the subplate that is arranged at the main board in the described main chamber and is arranged at secondary cavity.

Particularly, described housing comprises drain pan and is fastened on loam cake on the described drain pan, and described loam cake has one or more half the circumference of the sleeve where it joins the shoulders, and described half the circumference of the sleeve where it joins the shoulder has cavity.

Particularly, described secondary cavity is provided with two, and described secondary cavity is extended by the both sides of described main chamber and consists of.

Particularly, connected by the rebound of an arc between the adjacent two described half the circumference of the sleeve where it joins the shoulders.

Particularly, described rebound is provided with radiating fin.

Particularly, described half the circumference of the sleeve where it joins the shoulder symmetry be arranged at described loam cake both sides, and the cross section of described loam cake is M shape.

Particularly, this power supply adaptor also comprises the electric power connection line of being drawn by described housing, the projection that the two ends of each described half the circumference of the sleeve where it joins the shoulder are provided with.

Particularly, each described radiating fin is mutually vertical with the length direction of described rebound, and the length direction that each described radiating fin prolongs described rebound offers the draw-in groove of placing attaching plug.

Compared with prior art, power supply adaptor provided by the invention, chamber in the housing is arranged to comprise that main chamber reaches by the extended one or more secondary cavities of described main chamber, correspondingly the employing of the layout of circuit board is located at main board in the described main chamber therewith, and subplate then is arranged in the described secondary cavity.So, the setting that can make the electronic devices and components in the power supply adaptor obtain to disperse, thus make the heat of its generation be easy to shed.In addition, for gathering between the junction that prevents heat main chamber and each secondary cavity, described main chamber and each described secondary cavity are interconnected, keep the integraty of chamber, to prevent the heat radiation dead angle.

Description of drawings

Fig. 1 is the external structure synoptic diagram of one embodiment of the present invention;

Fig. 2 is the cross-sectional view after Fig. 1 removes circuit board and electric power connection line;

Fig. 3 is the cross-sectional view after Fig. 1 removes electric power connection line;

Fig. 4 is the inner structure synoptic diagram of one embodiment of the present invention.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.

Please refer to Fig. 1 ~ 4, power supply adaptor, comprise housing 1, described housing 1 has the chamber 3 of accommodating circuit board 2, the surface of described housing 1 is provided with the pin 13 of external power supply, described chamber 3 comprises main chamber 31 and by described main chamber 31 extended two secondary cavities 32, described main chamber 31 and two described secondary cavities 32 are interconnected; Described circuit board 2 comprises the subplate 22 that is arranged at the main board 21 in the described main chamber 31 and is arranged at secondary cavity 32.

Compared with prior art, power supply adaptor provided by the invention, chamber 3 in the described housing 1 is arranged to comprise that main chamber 31 reaches by described main chamber 31 extended two secondary cavities 32, correspondingly the employing of the layout of circuit board 2 is located at main board 21 in the described main chamber 31 therewith, and subplate 22 then is arranged in the described secondary cavity 32.And normally be arranged on the described circuit board 2 as the heating electronic component of power supply adaptor, so, the setting that can make the electronic devices and components in the power supply adaptor obtain to disperse, layout is more flexible on the whole.On this basis, the layout of each electronic devices and components on the suitable Circuit tuning plate 2 can make the whole heat that produces be easier to shed, and reaches the heat dispersion that improves whole power supply adaptor with this.In addition, for gathering between the junction that prevents heat main chamber 31 and each secondary cavity 32, described main chamber 31 is interconnected with each described secondary cavity 32, keeps the integraty of described chamber 3, to prevent the heat radiation dead angle.Simultaneously, it is to be noted, the concrete layout type of the electronic devices and components in the power supply adaptor is acceptor's plate body 21 and subplate 22 restriction nominally not, and namely each electronic devices and components can according to the designing requirement of reality, be distributed on described mainboard body 21 and each described subplate 22.

Please refer to Fig. 1 ~ 3, in the present embodiment, described housing 1 comprises drain pan 11 and is fastened on loam cake 12 on the described drain pan 11 that described loam cake 12 has two half the circumference of the sleeve where it joins the shoulders 121, and described half the circumference of the sleeve where it joins the shoulder 121 respectively has a cavity.Wherein, manufacturing for ease of described drain pan 11, described drain pan 11 adopts the rectangle frame of upper end open, so, can be to forming described main chamber 31 between the described loam cake 12 above described drain pan 11 after described drain pan 11 and described loam cake 12 mutual fastenings, the cavity in the described half the circumference of the sleeve where it joins the shoulder 121 then forms described secondary cavity 22 jointly with described drain pan 11.With the setting of above-mentioned housing 1 correspondingly, the mainboard body 21 of described circuit board 2 is arranged in the described drain pan 11, two described subplates 22 are vertical being arranged on the described mainboard body then.The housing that present embodiment provides structurally is easy to realize, can adopt the mode of plastics sucking moulding or injection mo(u)lding to obtain, and manufacturing cost is controlled.Particularly, described secondary cavity 32 is provided with two, and described secondary cavity 32 is extended by the both sides of described main chamber 31 and consists of.

Please refer to Fig. 1 ~ 3, because of power supply adaptor of the present invention directly towards public users, therefore its appearance effect will affect the user to its fancy grade, for making power supply adaptor of the present invention can obtain better aesthetic appearance, in the present embodiment, connected by the rebound 122 of an arc between the adjacent two described half the circumference of the sleeve where it joins the shoulders 121.So, can so that have between the two adjacent described half the circumference of the sleeve where it joins the shoulders 121 good excessively, the rebound 122 of arc also can increase whole housing 1 and extraneous contact area simultaneously, also is conducive to the design of heat dissipation direction.When obtaining good radiating effect, be further to strengthen its apparent effect, described half the circumference of the sleeve where it joins the shoulder 121 symmetries be arranged at described loam cake 12 both sides, and the cross section of described loam cake 12 is M shape.This power supply adaptor also comprises the electric power connection line 4 of being drawn by described housing 1.The structure of M shape can make electric power connection line 4 windings thereon simultaneously, and namely the loam cake 12 of M shape structure can become the winding body of electric power connection line 4, places and carries when making things convenient for notebook computer idle.For further adding the radiating effect that increases described rebound 122, described rebound 122 is provided with radiating fin 123, so increases greatly the contact area in whole housing 1 and the external world, thereby obtains better radiating effect.

Please refer to Fig. 1 ~ 3, in the present embodiment, the projection 1211 that the two ends of each described half the circumference of the sleeve where it joins the shoulder 121 are provided with.Particularly, described electric power connection line 4 is drawn by a side of described drain pan 11, this electric power connection line 4 comprises line body 41, and an end of described line body 41 is electrically connected with circuit board 2 in the described housing 1, and its other end is provided with an attaching plug that is connected with notebook computer 42.When described electric power connection line 4 is set around on the described loam cake 12, can be fixed by described protruding 1211, to prevent getting loose of described electric power connection line 4.Further, each described radiating fin 123 is mutually vertical with the length direction of described rebound 122, and the length direction that each described radiating fin 122 prolongs described rebound 122 offers the draw-in groove 124 of placing attaching plug 42.So, when finishing after line body 41 with described electric power connection line 4 is set around on the described loam cake 12, described attaching plug 42 can be positioned over described draw-in groove 124.This kind design can make described power supply adaptor when idle, and its volume further dwindles, thereby makes things convenient for the user to carry and take-up.

The above is only for preferred embodiment of the present invention, and its structure is not limited to the above-mentioned shape of enumerating, and all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

1. power supply adaptor, comprise housing, described housing has the chamber of accommodating circuit board, the surface of described housing is provided with the pin of external power supply, it is characterized in that: described chamber comprises main chamber and by the extended one or more secondary cavities of described main chamber, described main chamber and each described secondary cavity are interconnected; Described circuit board comprises the subplate that is arranged at the main board in the described main chamber and is arranged at secondary cavity.

2. power supply adaptor according to claim 1 is characterized in that: described housing comprises drain pan and is fastened on loam cake on the described drain pan, and described loam cake has one or more half the circumference of the sleeve where it joins the shoulders, and described half the circumference of the sleeve where it joins the shoulder has cavity.

3. power supply adaptor according to claim 2, it is characterized in that: described secondary cavity is provided with two, and described secondary cavity is extended by the both sides of described main chamber and consists of.

4. it is characterized in that according to claim 2 or 3 described power supply adaptors: the rebound by an arc between the adjacent two described half the circumference of the sleeve where it joins the shoulders connects.

5. power supply adaptor according to claim 4, it is characterized in that: described rebound is provided with radiating fin.

6. each described power supply adaptor according to claim 2 ~ 5 is characterized in that: described half the circumference of the sleeve where it joins the shoulder symmetry be arranged at described loam cake both sides, and the cross section of described loam cake is M shape.

7. described power supply adaptor is characterized in that: also comprise the electric power connection line of being drawn by described housing, the projection that the two ends of each described half the circumference of the sleeve where it joins the shoulder are provided with according to claim 2 ~ 5.

8. power supply adaptor according to claim 5, it is characterized in that: each described radiating fin is mutually vertical with the length direction of described rebound, and the length direction that each described radiating fin prolongs described rebound offers the draw-in groove of placing attaching plug.