JP3744994B2 - Detector amplifier unit - Google Patents

Detector amplifier unit Download PDF

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Publication number
JP3744994B2
JP3744994B2 JP34572795A JP34572795A JP3744994B2 JP 3744994 B2 JP3744994 B2 JP 3744994B2 JP 34572795 A JP34572795 A JP 34572795A JP 34572795 A JP34572795 A JP 34572795A JP 3744994 B2 JP3744994 B2 JP 3744994B2
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Prior art keywords
plate portion
amplifier unit
case
detector amplifier
contact
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JP34572795A
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JPH09162574A (en
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一博 槇納
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Keyence Corp
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Keyence Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、配線基板をケース内に収容し、かつ、レール部材に装着される検出器アンプユニットに関するものである。
【０００２】
【従来の技術】
近年、工場の生産ラインや検査ライン等においては、図９のように、多数の検出器１００を用いている。各検出器１００は、たとえば光ファイバ１０１と、該光ファイバ１０１からの光信号を光電変換して信号の処理を行うアンプ部１０２とから構成されている。各アンプ部１０２は、図示しない配線基板と、これを収容する樹脂製のケース１０５を備えており、該ケース１０５が制御盤１０３内のレール部材１０４に装着されている。
【０００３】
【発明が解決しようとする課題】
ところで、前記制御盤１０３は小型化される傾向にあり、そのため、アンプ部１０２同士は互いに近接ないし接触した状態でレール部材１０４に装着され、また、アンプ部１０２の薄型化の要請が強い。一方、工場の生産ライン等では、湿気や油・粉塵を含んだ悪環境下に曝される場合があるので、アンプ部１０２は略密閉された防塵・防滴構造が採用されている。したがって、アンプ部１０２内で発生した熱が逃げにくいので、効率の良い放熱の手段を講じる必要がある。
【０００４】
本発明は前記従来の問題に鑑みてなされたもので、かかる検出器アンプユニットにおいて、効率の良い放熱手段を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明は、配線基板と、前記配線基板を収容する樹脂製のケースと、前記ケースの底部に設けられ、前記ケースを二つの爪部によりレール部材を挟持する装着部とを備え、複数台が前記レール部材に装着される際に、互いに近接ないし接触した状態で装着される検出器アンプユニットにおいて、前記ケースには、金属板で形成された放熱部材が取り付けられ、前記放熱部材は、前記ケースにおける配線基板に沿い互いに対向するケース側壁の外側面に接触する一対の板からなる第１板部と、前記第１板部に連なり前記二つの爪部の間に設けられると共に前記レール部材の上面に接触する第２板部とが断面コ字状に一体形成され、前記検出器アンプユニットの第１板部は、前記レール部材に装着された状態で隣り合う他の検出器アンプユニットの第１板部と近接ないし接触可能であることを特徴とする。
【０００６】
配線基板等で発生した熱は、ケースを介して放熱部材の第１板部から第２板部に伝わり、更に、レール部材に伝熱される。ここで、ケースにおける比較的大きな面積を有する側壁に第１板部が接触しているので、樹脂製のケースから金属製の第１板部に熱が効率良く伝わり、第１板部と一体の第２板部を介して、金属製のレール部材に熱が効率良く伝わる。
【０００７】
【発明の実施の形態】
以下、本発明の一実施形態を図面にしたがって説明する。
図１において、断面凹字状の金属製のレール部材１には一対のレール部１０が形成され、このレール部１０には、複数の検出器アンプユニット２が互いに近接ないし接触した状態で装着されている。
【０００８】
図２に示すように、検出器アンプユニット２は、箱状のケース３内に破線で示すプリント基板（配線基板）４が収容されている。前記ケース３は樹脂製で、プリント基板４に沿って薄く形成されている。ケース３の底部３０には、図３に示すように、ケース３をレール部材１に装着する装着部３１が設けられている。なお、装着部３１は、底部３０の凹所３０ａの両端部に設けた固定爪３１ａおよび可動爪３１ｂによって構成されている。
【０００９】
前記ケース３には、図２に示す断面略コ字状の放熱部材５が装着される。放熱部材５は、一対の第１板部５０と、第２板部５１とが金属板により一体に形成されている。
【００１０】
前記第１板部５０は、ケース３におけるプリント基板４に沿った一対の側壁３２の外側面３２ａに図４のように接触しており、該第１板部５０には、ケース３を介して、プリント基板４（図２）などで発生した熱が伝熱される。図２の前記第１板部５０は、第２板部５１から遠ざかる程互いの間隔が狭く設定されており、放熱部材５がバネ性を有する金属（たとえば銅合金）で形成されていることにより、第１板部５０と外側面３２ａとの接触圧力の増大を図っている。
【００１１】
前記第２板部５１は、一対の第１板部５０に連なり、図３のように、装着部３１によりレール部材１のレール部１０に接触した状態が保持されている。図２に示すように、前記ケース３の側壁３２には凹所からなる被係合部（係合要素）３２ｂが設けられ、一方、前記第１板部５０には突起からなる係合部（係合要素）５０ａが設けられており、係合部５０ａが被係合部３２ｂに嵌り込んで係合していることによって、第２板部５１がケース３の底部３０に接触した状態が保持される。
【００１２】
なお、放熱部材５には、ニッケルメッキが施されている。また、６はコネクタで、検出器アンプユニット２同士を電気的に接続している。
【００１３】
前記構成においては、図１の検出器アンプユニット２が互いに近接ないし接触しているので、検出器アンプユニット２の間に挟まれた検出器アンプユニット２は、特に、熱が逃げにくい。これに対し、本検出器アンプユニット２は、比較的大きな表面積を有する一対の側壁３２に金属からなる第１板部５０が接触している。そのため、側壁３２から第１板部５０に熱が伝わり易く、更に、第１板部５０と一体の第２板部５１を介して、金属製のレール部材１に伝熱される。したがって、検出器アンプユニット２で発生した熱を効率良く逃がすことができる。
【００１４】
特に、本実施形態では、放熱部材５の第１板部５０がバネ性を有し、第１板部５０と側壁３２との接触圧力が大きいので、熱伝達の効率が良い。
【００１５】
また、図３のように、第２板部５１も底部３０に接触しているので、底部３０からも第２板部５１に熱が伝わる。そのため、ケース３から放熱部材５に熱伝達される面積が大きくなるので、熱を効率良く逃がすことができる。
【００１６】
また、本実施形態では、係合部５０ａと被係合部３２ｂとを設けているので、第２板部５１がケース３の底部３０に接触した状態を良好に保持することができる。
【００１７】
なお、ケース３は防塵および防滴構造となっているが、本発明では、ケース３の外部に放熱手段を設けたので、ケース３の防塵性および防滴性を損なうおそれもない。
【００１８】
ところで、係合部５０ａと被係合部３２ｂは必ずしも必要ではなく、また、係合部５０ａの形状も、図５のように、種々の形状とすることができる。さらに、係合部５０ａを貫通孔で形成し、被係合部３２ｂ（図２）を凸部で形成してもよい。
【００１９】
また、第２板部５１の裏面には、図６のように、冷却フィン５１ａを設けてもよい。また、第２板部５１はレール部材１のレール部１０に接触している必要はなく、図７のように、レール部材１におけるレール部１０以外の部分に接触していてもよい。
【００２０】
さらに、図８のように、レール部１０（図７）に接触する接触部５１ｂを斜め下方に若干折り曲げて、バネ性を持たせ、接触部５１ｂとレール部１０との接触圧力の増大を図ってもよい。
【００２１】
また、図２のケース３と放熱部材５とが接触する面には、熱伝導率の高い部材を介挿してもよい。たとえば、ケース３の底部３０および側壁３２に金属膜を蒸着したり、あるいは、ケース３と放熱部材５との間に熱伝導率の良いグリースを介挿してもよい。また、ケース３の表面に導電性塗料を塗布して、塗料によってケース３に放熱部材５を接着してもよい。
【００２２】
また、前記実施形態では、光ファイバ式の検出器について説明したが、本発明は、近接スイッチや超音波センサなどの他の検出器についても採用することができる。
【００２３】
【発明の効果】
以上説明したように、本発明によれば、金属製の放熱部材を設け、比較的広い面積を有するケースの側壁に第１板部を接触させ、第１板部から第２板部を介して金属製のレール部材に熱を逃がすので、薄い箱状のケースから熱を効率良く逃がすことができる。
【００２４】
また、請求項３の発明によれば、第１板部とケースの側壁との接触圧力が大きくなるので、熱伝導の効率が向上する。
【００２５】
また、請求項４の発明によれば、第２板部もケースの底部に接触しているので、熱伝達される面積が増大する。
【図面の簡単な説明】
【図１】 本発明の一実施形態を示す検出器アンプユニットおよびレールの分解斜視図である。
【図２】 検出器アンプユニットの分解斜視図である。
【図３】 同側面図である。
【図４】 同断面図である。
【図５】 放熱部材の第１変形例を示す斜視図である。
【図６】 放熱部材の第２変形例を示す斜視図である。
【図７】 放熱部材の第３変形例を示す検出器アンプユニットの側面図である。
【図８】 放熱部材の第４変形例を示す側面図である。
【図９】 従来の電子機器の全体を示す斜視図である。
【符号の説明】
１：レール部材
１０：レール部
２：検出器アンプユニット
３：ケース
３０：底部
３１：装着部
３２：側壁
３２ｂ：係合要素
４：配線基板
５：放熱部材
５０：第１板部
５０ａ：係合部
５１：第２板部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a detector amplifier unit that houses a wiring board in a case and is mounted on a rail member .
[0002]
[Prior art]
In recent years, many detectors 100 are used in production lines and inspection lines of factories as shown in FIG. Each detector 100 includes, for example, an optical fiber 101 and an amplifier unit 102 that photoelectrically converts an optical signal from the optical fiber 101 and performs signal processing. Each amplifier section 102 includes a wiring board (not shown) and a resin case 105 that accommodates the wiring board, and the case 105 is mounted on a rail member 104 in the control panel 103.
[0003]
[Problems to be solved by the invention]
By the way, the control panel 103 tends to be miniaturized. For this reason, the amplifier units 102 are mounted on the rail member 104 in a state of being close to or in contact with each other, and there is a strong demand for the amplifier unit 102 to be thin. On the other hand, since the factory production line and the like may be exposed to a bad environment including moisture, oil, and dust, the amplifier unit 102 has a substantially sealed dustproof / dripproof structure. Therefore, since heat generated in the amplifier unit 102 is difficult to escape, it is necessary to take efficient heat radiation means.
[0004]
The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide an efficient heat dissipation means in such a detector amplifier unit .
[0005]
[Means for Solving the Problems]
The present invention includes a wiring board, a resin case that accommodates the wiring board, and a mounting portion that is provided at a bottom portion of the case and sandwiches the rail member between two claw portions. In the detector amplifier unit that is mounted in a state of being close to or in contact with each other when mounted on the rail member, the case is provided with a heat radiating member formed of a metal plate, and the heat radiating member is the case A first plate portion made of a pair of plates contacting the outer side surfaces of the case side walls facing each other along the wiring board, and an upper surface of the rail member provided between the two claw portions connected to the first plate portion And a second plate portion that is in contact with the second plate portion is integrally formed in a U-shaped cross section, and the first plate portion of the detector amplifier unit is adjacent to another detector amplifier unit that is mounted on the rail member. Characterized in that it is a possible proximity to contact with the first plate portion.
[0006]
The heat generated in the wiring board or the like is transmitted from the first plate portion of the heat radiating member to the second plate portion through the case, and is further transferred to the rail member. Here, since the first plate portion is in contact with the side wall having a relatively large area in the case, heat is efficiently transferred from the resin case to the metal first plate portion, and is integrated with the first plate portion. Heat is efficiently transmitted to the metal rail member via the second plate portion.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, a pair of rail portions 10 are formed on a metal rail member 1 having a concave cross section, and a plurality of detector amplifier units 2 are mounted on the rail portions 10 in a state where they are close to or in contact with each other. It is .
[0008]
As shown in FIG. 2 , the detector amplifier unit 2 contains a printed circuit board (wiring board) 4 indicated by a broken line in a box-shaped case 3. The case 3 is made of resin and is thinly formed along the printed circuit board 4. As shown in FIG. 3, the bottom portion 30 of the case 3 is provided with a mounting portion 31 for mounting the case 3 to the rail member 1. The mounting portion 31 includes a fixed claw 31a and a movable claw 31b provided at both ends of the recess 30a of the bottom portion 30.
[0009]
A heat radiating member 5 having a substantially U-shaped cross section shown in FIG. In the heat radiating member 5, a pair of the first plate portion 50 and the second plate portion 51 are integrally formed of a metal plate.
[0010]
The first plate portion 50 is in contact with the outer side surfaces 32a of the pair of side walls 32 along the printed circuit board 4 in the case 3 as shown in FIG. The heat generated in the printed circuit board 4 (FIG. 2) is transferred. The first plate portion 50 in FIG. 2 is set such that the distance between the first plate portion 50 and the second plate portion 51 is further reduced, and the heat dissipating member 5 is formed of a metal having a spring property (for example, a copper alloy). The contact pressure between the first plate portion 50 and the outer surface 32a is increased.
[0011]
The second plate portion 51 is connected to the pair of first plate portions 50 and is held in contact with the rail portion 10 of the rail member 1 by the mounting portion 31 as shown in FIG. As shown in FIG. 2, the side wall 32 of the case 3 is provided with an engaged portion (engaging element) 32b made of a recess, while the first plate portion 50 has an engaging portion made of a protrusion ( Engagement element) 50a is provided, and the engagement of the engagement portion 50a with the engaged portion 32b keeps the second plate portion 51 in contact with the bottom 30 of the case 3. Is done.
[0012]
The heat dissipating member 5 is plated with nickel. Reference numeral 6 denotes a connector, which electrically connects the detector amplifier units 2 to each other.
[0013]
In the above-described configuration, the detector amplifier units 2 of FIG. 1 are close to or in contact with each other, so that the detector amplifier units 2 sandwiched between the detector amplifier units 2 are particularly difficult to release heat. On the other hand, in the present detector amplifier unit 2 , the first plate portion 50 made of metal is in contact with a pair of side walls 32 having a relatively large surface area. Therefore, heat is easily transferred from the side wall 32 to the first plate portion 50, and is further transferred to the metal rail member 1 through the second plate portion 51 integrated with the first plate portion 50. Therefore, the heat generated in the detector amplifier unit 2 can be released efficiently.
[0014]
In particular, in the present embodiment, since the first plate portion 50 of the heat radiating member 5 has a spring property and the contact pressure between the first plate portion 50 and the side wall 32 is large, the efficiency of heat transfer is good.
[0015]
As shown in FIG. 3, since the second plate portion 51 is also in contact with the bottom portion 30, heat is transferred from the bottom portion 30 to the second plate portion 51. Therefore, since the area where heat is transferred from the case 3 to the heat radiating member 5 is increased, heat can be efficiently released.
[0016]
Moreover, in this embodiment, since the engaging part 50a and the to-be-engaged part 32b are provided, the state which the 2nd board part 51 contacted the bottom part 30 of case 3 can be hold | maintained favorably.
[0017]
Although the case 3 has a dustproof and drip-proof structure, in the present invention, since the heat dissipating means is provided outside the case 3, there is no possibility of impairing the dustproof and dripproof properties of the case 3.
[0018]
Incidentally, the engaging portion 50a and the engaged portion 32b are not necessarily required, and the shape of the engaging portion 50a can be various shapes as shown in FIG. Furthermore, the engaging part 50a may be formed by a through hole, and the engaged part 32b (FIG. 2) may be formed by a convex part.
[0019]
Moreover, you may provide the cooling fin 51a in the back surface of the 2nd board part 51 like FIG. Moreover, the 2nd board part 51 does not need to contact the rail part 10 of the rail member 1, and may contact parts other than the rail part 10 in the rail member 1 like FIG.
[0020]
Further, as shown in FIG. 8, the contact portion 51 b that contacts the rail portion 10 (FIG. 7) is slightly bent obliquely downward to provide springiness, thereby increasing the contact pressure between the contact portion 51 b and the rail portion 10. May be.
[0021]
Moreover, you may insert a member with high heat conductivity in the surface where the case 3 and the thermal radiation member 5 of FIG. 2 contact. For example, a metal film may be deposited on the bottom 30 and the side wall 32 of the case 3, or grease having good thermal conductivity may be interposed between the case 3 and the heat radiating member 5. Alternatively, a conductive paint may be applied to the surface of the case 3 and the heat radiating member 5 may be bonded to the case 3 with the paint.
[0022]
In the above embodiment has described an optical fiber type detector, the present invention can also be employed with other detectors such as proximity switches or ultrasonic sensors.
[0023]
【The invention's effect】
As described above, according to the present invention, the metal heat dissipating member is provided, the first plate portion is brought into contact with the side wall of the case having a relatively large area, and the first plate portion is passed through the second plate portion. Since heat is released to the metal rail member, heat can be efficiently released from the thin box-shaped case.
[0024]
According to the invention of claim 3, since the contact pressure between the first plate portion and the side wall of the case is increased, the efficiency of heat conduction is improved.
[0025]
According to the invention of claim 4, since the second plate portion is also in contact with the bottom portion of the case, the area of heat transfer increases.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a detector amplifier unit and a rail showing an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a detector amplifier unit .
FIG. 3 is a side view of the same.
FIG. 4 is a sectional view of the same.
FIG. 5 is a perspective view showing a first modification of the heat dissipating member.
FIG. 6 is a perspective view showing a second modification of the heat radiating member.
FIG. 7 is a side view of a detector amplifier unit showing a third modification of the heat radiating member.
FIG. 8 is a side view showing a fourth modification of the heat radiating member.
FIG. 9 is a perspective view showing an entire conventional electronic device.
[Explanation of symbols]
1: Rail member 10: Rail part 2: Detector amplifier unit 3: Case 30: Bottom part 31: Mounting part 32: Side wall 32b: Engagement element 4: Wiring board 5: Heat radiation member 50: First plate part 50a: Engagement Part 51: second plate part

Claims (6)

配線基板と、
前記配線基板を収容する樹脂製のケースと、
前記ケースの底部に設けられ、前記ケースを二つの爪部によりレール部材を挟持する装着部とを備え、
複数台が前記レール部材に装着される際に、互いに近接ないし接触した状態で装着される検出器アンプユニットにおいて、
前記ケースには、金属板で形成された放熱部材が取り付けられ、
前記放熱部材は、前記ケースにおける配線基板に沿い互いに対向するケース側壁の外側面に接触する一対の板からなる第１板部と、前記第１板部に連なり前記二つの爪部の間に設けられると共に前記レール部材の上面に接触する第２板部とが断面コ字状に一体形成され、
前記検出器アンプユニットの第１板部は、前記レール部材に装着された状態で隣り合う他の検出器アンプユニットの第１板部と近接ないし接触可能であることを特徴とする検出器アンプユニット。A wiring board;
A resin case for housing the wiring board;
A mounting portion provided at the bottom of the case and holding the rail member between the two claws by the case;
When a plurality of units are mounted on the rail member, in the detector amplifier unit mounted in a state of being close to or in contact with each other,
A heat radiating member formed of a metal plate is attached to the case,
The heat dissipating member is provided between a first plate portion made of a pair of plates contacting the outer side surfaces of the case side walls facing each other along the wiring board in the case, and between the two claw portions connected to the first plate portion. And the second plate portion that contacts the upper surface of the rail member is integrally formed in a U-shaped cross section,
The detector amplifier unit is characterized in that the first plate portion of the detector amplifier unit is close to or can be in contact with the first plate portion of another detector amplifier unit adjacent to the detector plate when mounted on the rail member. . 請求項１において、
検出器アンプユニットは、隣り合う検出器アンプユニットを電気的に接続し、前記第１板部が設けられた側壁面に設けられたコネクタを有し、
該コネクタにより電気的に接続されている状態において、前記隣り合う検出器アンプユニットの第１板部同士が近接ないし接触することを特徴とする検出器アンプユニット。 In claim 1,
Detector amplifier unit electrically connects the detector amplifier unit adjacent, has a connector to the first plate portion is provided on the side wall surface provided,
A detector amplifier unit, wherein the first plate portions of the adjacent detector amplifier units are close to or in contact with each other in a state of being electrically connected by the connector. 請求項１もしくは２において、
前記一対の第１板部が前記第２板部から遠ざかる程、互いの間隔が狭く設定されている検出器アンプユニット。In claim 1 or 2,
A detector amplifier unit in which a distance between the pair of first plate portions is set to be narrower as the pair of first plate portions is moved away from the second plate portion. 請求項１，２もしくは３において、
前記装着部を設けたケースの底部に、前記第２板部が接触している検出器アンプユニット。In claim 1, 2 or 3,
A detector amplifier unit in which the second plate portion is in contact with a bottom portion of the case provided with the mounting portion. 請求項１，２，３もしくは４において、
前記第２板部が前記レール部材のレール部に接触する検出器アンプユニット。In claim 1, 2, 3 or 4,
A detector amplifier unit in which the second plate portion contacts the rail portion of the rail member. 請求項４において、
前記第１板部および側壁には互いに係合する係合要素が設けられ、該係合要素が係合していることで、前記第２板部がケースの底部に接触した状態が保持されている検出器アンプユニット。In claim 4,
The first plate portion and the side wall are provided with engaging elements that engage with each other, and the engagement of the engaging elements keeps the second plate portion in contact with the bottom of the case. Detector amplifier unit.
JP34572795A 1995-12-08 1995-12-08 Detector amplifier unit Expired - Fee Related JP3744994B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34572795A JP3744994B2 (en) 1995-12-08 1995-12-08 Detector amplifier unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34572795A JP3744994B2 (en) 1995-12-08 1995-12-08 Detector amplifier unit

Publications (2)

Publication Number Publication Date
JPH09162574A JPH09162574A (en) 1997-06-20
JP3744994B2 true JP3744994B2 (en) 2006-02-15

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Family Applications (1)

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JP34572795A Expired - Fee Related JP3744994B2 (en) 1995-12-08 1995-12-08 Detector amplifier unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2960399A (en) * 1998-04-01 1999-10-18 Omron Corporation Electronic device, panel device, and supporting rail
JP4068331B2 (en) * 2001-10-17 2008-03-26 株式会社ニフコ Clamp
EP3090611B8 (en) * 2013-12-30 2020-12-09 Schneider Electric USA, Inc. Method and apparatus for increasing heat dissipation capacity of a din rail mounted enclosure
DE102014109049B4 (en) * 2014-06-27 2017-02-16 Phoenix Contact Gmbh & Co. Kg Device for receiving electrical devices
JP2022147498A (en) * 2021-03-23 2022-10-06 パナソニックＩｐマネジメント株式会社 Enclosure for electronic equipment
JP2022147499A (en) * 2021-03-23 2022-10-06 パナソニックＩｐマネジメント株式会社 Enclosure for electronic equipment
DE102021120493A1 (en) * 2021-08-06 2023-02-09 Phoenix Contact Gmbh & Co. Kg Electronics housing for mounting on a mounting rail and a system

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