JP2010273434A - Ac adapter - Google Patents

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JP2010273434A
JP2010273434A JP2009122110A JP2009122110A JP2010273434A JP 2010273434 A JP2010273434 A JP 2010273434A JP 2009122110 A JP2009122110 A JP 2009122110A JP 2009122110 A JP2009122110 A JP 2009122110A JP 2010273434 A JP2010273434 A JP 2010273434A
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casing
adapter
outer casing
inner casing
voltage
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Katsura Komata
桂 小俣
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an AC adapter which is improved in dissipation characteristics and has no risk of spreading of fire to a periphery even if a circuit component ignites by a secular deterioration. <P>SOLUTION: A housing 1 of the AC adapter is constituted of an iron plate of 0.3 mm, for example, and it is provided with a printed board 2 where circuit components such as a transformer reducing a voltage of an AC power supply, a rectifier circuit rectifying the voltage and a smoothing circuit smoothing output of the rectifier circuit are mounted inside. The inner face of the housing 1 of the AC adapter is treated by insulation for insulation with the respective circuit components. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、交流電源の電圧を所定の直流電圧に変換して負荷側に出力するACアダプターに関するものである。   The present invention relates to an AC adapter that converts a voltage of an AC power source into a predetermined DC voltage and outputs the voltage to a load side.

従来のACアダプターには、パーソナルコンピュータなどの負荷が稼動状態である場合、トランスの一次側に挿入されたリレー接点がオンしてAC電源が通電状態となり、前述の負荷が非稼動状態である場合は、リレー接点がオフしてAC電源との接続を遮断するものがある(例えば、特許文献1参照)。   In a conventional AC adapter, when the load of a personal computer or the like is in an operating state, the relay contact inserted in the primary side of the transformer is turned on, the AC power supply is in an energized state, and the aforementioned load is in a non-operating state In some cases, the relay contact is turned off to cut off the connection with the AC power supply (see, for example, Patent Document 1).

特開2006−238676号公報(第4頁、図1,2)JP 2006-238676 A (page 4, FIGS. 1 and 2)

ところで、ACアダプターは、一般的にプラスチックで構成されているため、内部の回路部品から発生する熱に対する放熱特性が低下し、回路部品が経年劣化などにより発火した場合には燃焼し、周辺に可燃物が存在すると延焼する危険性があった。
本発明は、前記のような課題を解決するためになされたもので、放熱特性を向上させ、回路部品が経年劣化により発火しても、周辺に延焼する虞のないACアダプターを提供することを目的とする。
By the way, AC adapters are generally made of plastic, so the heat dissipation characteristics against the heat generated from the internal circuit components are reduced. There was a risk of fire spreading when objects were present.
The present invention has been made to solve the above-described problems, and provides an AC adapter that improves heat dissipation characteristics and has no risk of spreading to the periphery even when circuit components ignite due to aging. Objective.

本発明に係るACアダプターは、交流電源の電圧を所定の直流電圧に変換するための各種の回路部品が実装されたプリント基板と、プリント基板が収容された筐体とを備え、筐体を金属で構成したものである。   An AC adapter according to the present invention includes a printed circuit board on which various circuit components for converting the voltage of an AC power source into a predetermined DC voltage are mounted, and a housing in which the printed circuit board is housed. It is composed of

本発明においては、ACアダプターの筐体を金属で構成したので、放熱特性が向上し、経年劣化などによりプリント基板などから発火したとしても周辺への延焼を防止できる。   In the present invention, since the casing of the AC adapter is made of metal, the heat dissipation characteristics are improved, and it is possible to prevent the spread of fire to the periphery even if the printed board or the like is ignited due to deterioration over time.

本発明の実施の形態1に係るACアダプターの外観を示す斜視図である。It is a perspective view which shows the external appearance of the AC adapter which concerns on Embodiment 1 of this invention. 本発明の実施の形態2に係るACアダプターの上面の一部を破砕して示す平面図である。It is a top view which crushes and shows a part of upper surface of the AC adapter which concerns on Embodiment 2 of this invention. 本発明の実施の形態3に係るACアダプターの長手方向と直交する面を切断して示す断面図である。It is sectional drawing which cut | disconnects and shows the surface orthogonal to the longitudinal direction of the AC adapter which concerns on Embodiment 3 of this invention. 本発明の実施の形態4に係るACアダプターの長手方向と直交する面を切断して示す断面図である。It is sectional drawing which cut | disconnects and shows the surface orthogonal to the longitudinal direction of the AC adapter which concerns on Embodiment 4 of this invention. 本発明の実施の形態4に係るACアダプターの外観を示す斜視図である。It is a perspective view which shows the external appearance of the AC adapter which concerns on Embodiment 4 of this invention. 実施の形態4の他の形態に係るACアダプターの外観を示す斜視図である。FIG. 20 is a perspective view showing an external appearance of an AC adapter according to another embodiment of the fourth embodiment. 実施の形態4の他の形態に係るACアダプターの外観を示す斜視図である。FIG. 20 is a perspective view showing an external appearance of an AC adapter according to another embodiment of the fourth embodiment.

実施の形態1.
図1は本発明の実施の形態1に係るACアダプターの外観を示す斜視図である。
図1において、ACアダプターの筐体1は、例えば鉄板あるいは銅板の金属により構成されている。鉄板の場合は例えば板厚が0.3mm以上、銅板の場合は例えば0.4mm以上の板金が使用されている。筐体1の内部には、交流電源(AC)の電圧を降圧するトランス、その電圧を整流する整流回路、整流回路の出力をさらに平滑(DC)する平滑回路などの回路部品が実装されたプリント基板2が設けられている。筐体1の内側面には、各回路部品との絶縁のために絶縁処理が施されている。
Embodiment 1 FIG.
FIG. 1 is a perspective view showing an external appearance of an AC adapter according to Embodiment 1 of the present invention.
In FIG. 1, a casing 1 of an AC adapter is made of, for example, an iron plate or a copper plate. In the case of an iron plate, for example, a sheet metal having a thickness of 0.3 mm or more, and in the case of a copper plate, for example, a sheet metal having a thickness of 0.4 mm or more is used. Printed with circuit components such as a transformer for stepping down the voltage of the AC power supply (AC), a rectifying circuit for rectifying the voltage, and a smoothing circuit for further smoothing (DC) the output of the rectifying circuit mounted in the housing 1 A substrate 2 is provided. The inner surface of the housing 1 is subjected to insulation treatment for insulation from each circuit component.

筐体1の長手方向の一方の側面には、AC入力コード3がトランスの一次側に接続され、もう一方の側面には、DC出力コード4がプラグ5及びレセプタクル(図示せず)を介して平滑回路の出力側に接続されている。前述のレセプタクルは、ACアダプターの筐体1に取り付けられ、プラグ5が着脱可能に接続されている。   The AC input cord 3 is connected to the primary side of the transformer on one side surface of the casing 1 in the longitudinal direction, and the DC output cord 4 is connected to the other side surface via a plug 5 and a receptacle (not shown). It is connected to the output side of the smoothing circuit. The aforementioned receptacle is attached to the casing 1 of the AC adapter, and the plug 5 is detachably connected thereto.

以上のように、ACアダプターの筐体1を鉄板あるいは銅板で構成したので、プリント基板2上の各回路部品から発生する熱を放熱し易くなり、回路部品が経年劣化により発火しても延焼を防止でき、安全性が向上する。   As described above, the AC adapter casing 1 is made of an iron plate or a copper plate, so that it is easy to dissipate heat generated from each circuit component on the printed circuit board 2, and the fire spreads even if the circuit component ignites due to deterioration over time. Can be prevented and safety is improved.

実施の形態2.
実施の形態2は、筐体1をプラスチック製の内筐体と内筐体の周囲を覆う金属製の外筐体とで構成したものである。
図2は本発明の実施の形態2に係るACアダプターの上面の一部を破砕して示す平面図である。なお、図1で説明した実施の形態1と同様の部分には同じ符号を付している。
Embodiment 2. FIG.
In the second embodiment, the casing 1 is composed of a plastic inner casing and a metal outer casing covering the periphery of the inner casing.
FIG. 2 is a plan view showing a part of the upper surface of the AC adapter according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1 demonstrated in FIG.

図2において、ACアダプターの筐体1は、プラスチック製の内筐体1aと、その内筐体1aを覆うように各外面に接触して設けられたアルミニウム製の外筐体1bとで構成されている。内筐体1aは、前述の如く外筐体1bによって覆われているため、内筐体1aを構成するプラスチックの厚みが従来と比べ薄く形成されている。これは、プラスチックの強度がアルミニウム製の外筐体1bによって補強されているからである。   In FIG. 2, a casing 1 of the AC adapter includes an inner casing 1a made of plastic and an outer casing 1b made of aluminum provided in contact with each outer surface so as to cover the inner casing 1a. ing. Since the inner casing 1a is covered with the outer casing 1b as described above, the plastic constituting the inner casing 1a is formed thinner than the conventional one. This is because the strength of the plastic is reinforced by the outer casing 1b made of aluminum.

以上のように、ACアダプターの筐体1を、プラスチック製の内筐体1aと、その内筐体1aを覆うように各外面に接触して設けられたアルミニウム製の外筐体1bとで構成したので、延焼防止に加え、放熱特性が向上し、軽量化を図ることができる。   As described above, the casing 1 of the AC adapter includes the plastic inner casing 1a and the aluminum outer casing 1b provided in contact with each outer surface so as to cover the inner casing 1a. Therefore, in addition to preventing the spread of fire, the heat dissipation characteristics are improved and the weight can be reduced.

実施の形態3.
実施の形態3は、ACアダプターの筐体1を構成する内筐体1aと外筐体1bとの間に熱伝導性の接着剤を塗布したものである。
図3は本発明の実施の形態3に係るACアダプターの長手方向と直交する面を切断して示す断面図である。なお、図1で説明した実施の形態1と同様の部分には同じ符号を付している。
Embodiment 3 FIG.
In the third embodiment, a heat conductive adhesive is applied between the inner casing 1a and the outer casing 1b that constitute the casing 1 of the AC adapter.
FIG. 3 is a cross-sectional view showing a surface orthogonal to the longitudinal direction of the AC adapter according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1 demonstrated in FIG.

図3において、ACアダプターの筐体1は、前述したように、プラスチック製の内筐体1aと、その内筐体1aの周囲を覆うアルミニウム製の外筐体1bとで構成されている。内筐体1aと外筐体1bとの間のうち例えばプリント基板2近接の間には、難燃性で熱伝導性の優れた接着剤6が介在している。これは、内筐体1aあるいは外筐体1bの何れかの面に塗布されたものである。その他の間は直接接触している。   In FIG. 3, the casing 1 of the AC adapter is composed of the plastic inner casing 1a and the aluminum outer casing 1b covering the periphery of the inner casing 1a as described above. Between the inner casing 1a and the outer casing 1b, for example, in the vicinity of the printed circuit board 2, an adhesive 6 having flame resistance and excellent thermal conductivity is interposed. This is applied to either surface of the inner casing 1a or the outer casing 1b. Others are in direct contact.

このように、内筐体1aと外筐体1bとの間のうちプリント基板2近接の間に難燃性で熱伝導性の優れた接着剤6が介在しているので、実施の形態2と比べ熱伝導性が向上し、そのため、ACアダプターの筐体1内部の発熱を速やかに外筐体1bから放熱でき、回路部品の劣化を抑えることが可能になり、発火防止となる。   Thus, since the adhesive 6 having flame retardancy and excellent thermal conductivity is interposed between the inner casing 1a and the outer casing 1b in the vicinity of the printed circuit board 2, the second embodiment and Compared with this, the thermal conductivity is improved, so that the heat generated inside the casing 1 of the AC adapter can be quickly dissipated from the outer casing 1b, the deterioration of the circuit components can be suppressed, and the ignition is prevented.

なお、実施の形態3では、内筐体1aと外筐体1bとの間のうちプリント基板2近接の間に熱伝導性の接着剤6を塗布させたことを述べたが、これ以外の間にも熱伝導性の接着剤6を介在させるようにしても良い。   In the third embodiment, it is described that the heat conductive adhesive 6 is applied between the inner casing 1a and the outer casing 1b in the vicinity of the printed circuit board 2. Alternatively, a heat conductive adhesive 6 may be interposed.

実施の形態4.
実施の形態4は、ACアダプターの筐体1を構成する内筐体1aと外筐体1bとの間に弾性部材を設けたものである。
図4は本発明の実施の形態4に係るACアダプターの長手方向と直交する面を切断して示す断面図である。なお、図1で説明した実施の形態1と同様の部分には同じ符号を付している。
Embodiment 4 FIG.
In the fourth embodiment, an elastic member is provided between an inner casing 1a and an outer casing 1b constituting the casing 1 of the AC adapter.
FIG. 4 is a cross-sectional view of the AC adapter according to Embodiment 4 of the present invention cut along a plane orthogonal to the longitudinal direction. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1 demonstrated in FIG.

図4において、ACアダプターの筐体1は、前述したように、プラスチック製の内筐体1aと、その内筐体1aの周囲を覆うアルミニウム製の外筐体1bとで構成されている。内筐体1aと外筐体1bとの間のうち例えばプリント基板2上方の間には、弾性部材である例えば難燃性のゴム7が設けられている。このゴム7により、内筐体1aがプリント基板2側に押しつけられ、外筐体1bの一面に密着した状態となっている。   In FIG. 4, the casing 1 of the AC adapter is composed of the plastic inner casing 1a and the aluminum outer casing 1b covering the periphery of the inner casing 1a as described above. Between the inner casing 1a and the outer casing 1b, for example, between the upper part of the printed circuit board 2, for example, a flame-retardant rubber 7 that is an elastic member is provided. The inner casing 1a is pressed against the printed circuit board 2 by the rubber 7, and is in close contact with one surface of the outer casing 1b.

このように、内筐体1aと外筐体1bとの間のうちプリント基板2上方の間にゴム7を設けて、内筐体1aをプリント基板2側に押しつけて外筐体1bの一面に密着させるようにしたので、実施の形態2と比べ熱伝導性が向上し、そのため、ACアダプターの筐体1内部の発熱を速やかに外筐体1bから放熱でき、回路部品の劣化を抑えることが可能になり、発火防止となる。   As described above, the rubber 7 is provided between the inner casing 1a and the outer casing 1b above the printed circuit board 2, and the inner casing 1a is pressed against the printed circuit board 2 so as to be placed on one surface of the outer casing 1b. Since it is made to adhere, the thermal conductivity is improved as compared with the second embodiment, so that the heat generated inside the casing 1 of the AC adapter can be quickly dissipated from the outer casing 1b, and the deterioration of the circuit components can be suppressed. It becomes possible to prevent ignition.

なお、実施の形態4では、内筐体1aと外筐体1bとの間のうちプリント基板2上方の間にゴム7を設けたことを述べたが、これに代えて板ばねを設けて、内筐体1aをプリント基板2側に押しつけるようにしても良い。   In the fourth embodiment, it has been described that the rubber 7 is provided between the inner casing 1a and the outer casing 1b above the printed circuit board 2, but a leaf spring is provided instead of this. The inner casing 1a may be pressed against the printed circuit board 2 side.

実施の形態5.
実施の形態5は、ACアダプターの筐体1を構成する内筐体1aと外筐体1bのうち外筐体1bに複数のスリットを設けたものである。
図5は本発明の実施の形態4に係るACアダプターの外観を示す斜視図である。なお、図1で説明した実施の形態1と同様の部分には同じ符号を付している。
Embodiment 5 FIG.
In the fifth embodiment, a plurality of slits are provided in the outer casing 1b among the inner casing 1a and the outer casing 1b constituting the casing 1 of the AC adapter.
FIG. 5 is a perspective view showing the appearance of an AC adapter according to Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1 demonstrated in FIG.

図5において、ACアダプターの筐体1は、実施の形態2と同様に、プラスチック製の内筐体1aと、その内筐体1aの周囲を覆うアルミニウム製の外筐体1bとで構成されている。ACアダプターの筐体1のうち外筐体1bの例えば両側面には、長手方向に配列された複数のスリット8が設けられている。各スリット8は、例えば内部に炎が発生しても外部へ通さない1mm以下となっている。   In FIG. 5, as in the second embodiment, the AC adapter casing 1 is composed of a plastic inner casing 1a and an aluminum outer casing 1b covering the periphery of the inner casing 1a. Yes. A plurality of slits 8 arranged in the longitudinal direction are provided on, for example, both side surfaces of the outer casing 1b of the casing 1 of the AC adapter. Each slit 8 is, for example, 1 mm or less which does not pass outside even if a flame occurs inside.

以上のように、ACアダプターの筐体1を、プラスチック製の内筐体1aと、その内筐体1aを覆うように各外面に接触して設けられたアルミニウム製の外筐体1bとで構成し、さらに外筐体1bの両側面に複数のスリット8を設けたので、延焼防止に加え、放熱特性が向上し、軽量化を図ることができる。   As described above, the casing 1 of the AC adapter includes the plastic inner casing 1a and the aluminum outer casing 1b provided in contact with each outer surface so as to cover the inner casing 1a. In addition, since the plurality of slits 8 are provided on both side surfaces of the outer casing 1b, in addition to preventing the spread of fire, the heat dissipation characteristics are improved and the weight can be reduced.

なお、実施の形態5では、外筐体1bの両側面に複数のスリット8を設けたことを述べたが、これに代えて、例えば図6に示すように、外筐体1bの各面の四隅にそれぞれ複数のスリット8を設けても良い。また、例えば図7に示すように、外筐体1bの上面に長手方向に配列された複数のスリット8を設けても良い。   In the fifth embodiment, it has been described that the plurality of slits 8 are provided on both side surfaces of the outer casing 1b. Instead, for example, as shown in FIG. A plurality of slits 8 may be provided at each of the four corners. For example, as shown in FIG. 7, a plurality of slits 8 arranged in the longitudinal direction may be provided on the upper surface of the outer casing 1b.

また、複数のスリット8に代えて、直径3mm以下の穴を、外筐体1bの両側面、外筐体1bの各面の四隅、あるいは外筐体1bの上面に設けても良い。穴の寸法は、前述したように内部に炎が発生しても外部へ通さない大きさである。   Instead of the plurality of slits 8, holes having a diameter of 3 mm or less may be provided on both side surfaces of the outer casing 1b, four corners of each surface of the outer casing 1b, or the upper surface of the outer casing 1b. As described above, the size of the hole is such a size that it does not pass outside even if a flame is generated inside.

1 ACアダプターの筐体、1a 内筐体、1b 外筐体、2 プリント基板、3 AC入力コード、4 DC出力コード、5 プラグ、6 熱伝導性の接着剤、7 ゴム、
8 スリット。
1 AC adapter housing, 1a inner housing, 1b outer housing, 2 printed circuit board, 3 AC input cord, 4 DC output cord, 5 plug, 6 heat conductive adhesive, 7 rubber,
8 Slit.

Claims (6)

交流電源の電圧を所定の直流電圧に変換するための各種の回路部品が実装されたプリント基板と、
前記プリント基板が収容された筐体とを備え、
前記筐体を金属で構成したことを特徴とするACアダプター。
A printed circuit board on which various circuit components for converting the voltage of the AC power source into a predetermined DC voltage are mounted;
A housing containing the printed circuit board;
An AC adapter comprising the casing made of metal.
前記筐体は、プラスチック製の内筐体と、前記内筐体の周囲を覆う金属製の外筐体とで構成されていることを特徴とする請求項1記載のACアダプター。   2. The AC adapter according to claim 1, wherein the casing includes an inner casing made of plastic and an outer casing made of metal that covers the periphery of the inner casing. 前記内筐体と前記外筐体との間に熱伝導性の接着剤が塗布されていることを特徴とする請求項2記載のACアダプター。   The AC adapter according to claim 2, wherein a heat conductive adhesive is applied between the inner casing and the outer casing. 前記内筐体と前記外筐体との間に弾性部材が設けられ、この弾性部材によって前記内筐体と前記外筐体の一面が密着していることを特徴とする請求項2記載のACアダプター。   3. The AC according to claim 2, wherein an elastic member is provided between the inner case and the outer case, and one surface of the inner case and the outer case are in close contact with each other by the elastic member. adapter. 前記外筐体に1mm以下のスリットあるいは直径3mm以下の穴が複数設けられていることを特徴とする請求項2乃至4の何れかに記載のACアダプター。   The AC adapter according to any one of claims 2 to 4, wherein a plurality of slits having a diameter of 1 mm or less or holes having a diameter of 3 mm or less are provided in the outer casing. 前記外筐体はアルミニウム製の板金で構成されていることを特徴とする請求項2乃至5の何れかに記載のACアダプター。   6. The AC adapter according to claim 2, wherein the outer casing is made of aluminum sheet metal.
JP2009122110A 2009-05-20 2009-05-20 Ac adapter Pending JP2010273434A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019167418A1 (en) * 2018-03-01 2019-09-06 パナソニックIpマネジメント株式会社 Robot
TWI833114B (en) * 2020-12-31 2024-02-21 大陸商台達電子企業管理(上海)有限公司 Ac adapter structure and manufacturing method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04255296A (en) * 1991-02-06 1992-09-10 Nippon Densan Corp Power supply adapter
JP2005310174A (en) * 2005-05-02 2005-11-04 Fujitsu Ltd Ic card
JP2005328667A (en) * 2004-05-17 2005-11-24 Hitachi Ltd Ac adapter
JP2009065748A (en) * 2007-09-05 2009-03-26 Keihin Corp Inverter device having separated module terminal
JP2009103391A (en) * 2007-10-25 2009-05-14 Panasonic Corp Air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04255296A (en) * 1991-02-06 1992-09-10 Nippon Densan Corp Power supply adapter
JP2005328667A (en) * 2004-05-17 2005-11-24 Hitachi Ltd Ac adapter
JP2005310174A (en) * 2005-05-02 2005-11-04 Fujitsu Ltd Ic card
JP2009065748A (en) * 2007-09-05 2009-03-26 Keihin Corp Inverter device having separated module terminal
JP2009103391A (en) * 2007-10-25 2009-05-14 Panasonic Corp Air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019167418A1 (en) * 2018-03-01 2019-09-06 パナソニックIpマネジメント株式会社 Robot
TWI833114B (en) * 2020-12-31 2024-02-21 大陸商台達電子企業管理(上海)有限公司 Ac adapter structure and manufacturing method thereof

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