JP6127467B2 - Structure for preventing abnormal noise on printed circuit boards - Google Patents
Structure for preventing abnormal noise on printed circuit boards Download PDFInfo
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- JP6127467B2 JP6127467B2 JP2012255515A JP2012255515A JP6127467B2 JP 6127467 B2 JP6127467 B2 JP 6127467B2 JP 2012255515 A JP2012255515 A JP 2012255515A JP 2012255515 A JP2012255515 A JP 2012255515A JP 6127467 B2 JP6127467 B2 JP 6127467B2
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Description
本発明は、プリント基板の異音防止構造に関するものである。 The present invention relates to an anti-noise structure for a printed circuit board.
従来、プリント基板の異音防止構造としては、例えば特許文献１に記載されたものが知られている。図３（ａ）（ｂ）に示すように、この異音防止構造では、発振部材９１の固定されたプリント基板９２を保持固定するケース９３に、弾性変形可能な押圧部９３ａを設けている。そして、この押圧部９３ａを弾性変形させることで、プリント基板９２の発振部材９１とは反対側であって、発振部材９１の２個の端子９１ａ間の中央部を、即ちプリント基板９２の振動エネルギが最も大きい部分を弾性力的に押圧している。これにより、発振部材９１からプリント基板９２へ伝達された振動が押圧部９３ａによって確実に減衰できるとしている。 Conventionally, as an abnormal noise prevention structure of a printed circuit board, for example, one described in Patent Document 1 is known. As shown in FIGS. 3A and 3B, in this noise prevention structure, a pressing portion 93 a that can be elastically deformed is provided on a case 93 that holds and fixes a printed circuit board 92 to which the oscillation member 91 is fixed. The pressing portion 93a is elastically deformed, so that the central portion between the two terminals 91a of the oscillation member 91 on the side opposite to the oscillation member 91 of the printed board 92, that is, the vibration energy of the printed board 92 is obtained. The portion with the largest is pressed elastically. Thereby, the vibration transmitted from the oscillation member 91 to the printed circuit board 92 can be surely attenuated by the pressing portion 93a.
また、この異音防止構造では、発振部材９１からプリント基板９２へ伝達される振動を低減させるために、発振部材９１とプリント基板９２との間に柔軟なゴム、樹脂等からなる防振シート９４を介装している。これにより、発振部材９１からプリント基板９２へ伝達された振動によって、発振部材９１とプリント基板９２との間の隙間で発生する異音を抑制できるとしている。 Further, in this noise prevention structure, in order to reduce vibration transmitted from the oscillating member 91 to the printed circuit board 92, a vibration proof sheet 94 made of flexible rubber, resin or the like is provided between the oscillating member 91 and the printed circuit board 92. Is intervening. As a result, the noise transmitted from the oscillating member 91 to the printed circuit board 92 can suppress the abnormal noise generated in the gap between the oscillating member 91 and the printed circuit board 92.
以上により、発振部材９１の発振時にプリント基板９２の振動を抑制して異音の発生を防止している。 As described above, when the oscillation member 91 oscillates, the vibration of the printed circuit board 92 is suppressed to prevent the generation of abnormal noise.
ところで、特許文献１では、発振部材９１は、プリント基板９２に形成された一対のスルーホール９２ａを貫通する両端子９１ａがはんだ９５を用いてはんだ付けされることでプリント基板９２に接合されている。 By the way, in Patent Document 1, the oscillation member 91 is joined to the printed circuit board 92 by soldering both terminals 91a passing through a pair of through holes 92a formed in the printed circuit board 92 using solder 95. .
通常、端子９１ａをはんだ付けする際には、スルーホール９２ａから突出する端子９１ａの先端部をはんだ槽の表層に浸すことで行われる。これにより、スルーホール９２ａ及び端子９１ａの隙間全体にもはんだ９５が浸透して、発振部材９１が好適な強度でプリント基板９２に接合される。 Usually, when soldering the terminal 91a, the tip of the terminal 91a protruding from the through hole 92a is immersed in the surface layer of the solder bath. As a result, the solder 95 penetrates into the entire gap between the through hole 92a and the terminal 91a, and the oscillation member 91 is bonded to the printed circuit board 92 with suitable strength.
しかしながら、発振部材９１とプリント基板９２との間に防振シート９４が介装されていると、気化したフラックスが充満してスルーホール９２ａ及び端子９１ａの隙間へのはんだ９５の浸透が阻害されることがある。この場合、発振部材９１とプリント基板９２との接合強度が不足して歩留まりが低下する可能性がある。 However, if the vibration isolating sheet 94 is interposed between the oscillation member 91 and the printed board 92, the vaporized flux is filled and the penetration of the solder 95 into the gap between the through hole 92a and the terminal 91a is hindered. Sometimes. In this case, the bonding strength between the oscillation member 91 and the printed circuit board 92 may be insufficient and the yield may be reduced.
本発明の目的は、歩留まりを低下させることなく、発振部材からプリント基板へ伝達された振動によって発生する異音を抑制することができるプリント基板の異音防止構造を提供することにある。 An object of the present invention is to provide a noise prevention structure for a printed circuit board that can suppress noise generated by vibration transmitted from an oscillation member to the printed circuit board without reducing the yield.
上記問題点を解決するために、請求項１に記載の発明は、プリント基板と、一方向に並設された複数の端子を有し前記プリント基板に形成されたスルーホールを貫通するこれら端子がはんだ付けされることで前記プリント基板に実装される発振部材と、前記プリント基板及び前記発振部材の間に介装される弾性変形可能な防振シートと、を備え、前記防振シートは、最外側の二つの前記端子間を含む領域に広がる単独の開口部を有することを要旨とする。 In order to solve the above-mentioned problems, the invention according to claim 1 includes a printed circuit board and a plurality of terminals arranged in parallel in one direction, and these terminals penetrating through holes formed in the printed circuit board. An oscillation member that is mounted on the printed circuit board by being soldered, and an elastically deformable vibration isolation sheet interposed between the printed circuit board and the oscillation member. The gist of the invention is to have a single opening that extends into a region including the space between the two outer terminals.
同構成によれば、例えば、前記複数の端子をはんだ付けする際には、前記スルーホールから突出する前記端子の先端部をはんだ槽の表層に浸すことで行われる。このとき、気化したフラックスは、前記スルーホールを通って前記防振シートの前記開口部へと導かれる。この開口部は、前記最外側の二つの端子間を含む領域、即ち前記複数の端子の全てを含む領域に広がって十分な容積が確保されていることで、前記フラックスは、前記スルーホールを円滑に通過することができる。従って、前記スルーホール及び端子の隙間にはんだをより円滑に浸透させることができ、前記発振部材及び前記プリント基板の接合強度の不足による歩留まりの低下を抑制することができる。 According to this configuration, for example, when soldering the plurality of terminals, the tip of the terminal protruding from the through hole is immersed in the surface layer of the solder bath. At this time, the vaporized flux is guided to the opening of the vibration-proof sheet through the through hole. The opening spreads to a region including the space between the outermost two terminals, that is, a region including all of the plurality of terminals, so that a sufficient volume is secured, so that the flux smoothly flows through the through hole. Can pass through. Accordingly, the solder can be more smoothly penetrated into the gaps between the through holes and the terminals, and a decrease in yield due to insufficient bonding strength between the oscillation member and the printed circuit board can be suppressed.
また、前記プリント基板及び前記発振部材の間には、前記開口部の外側で前記防振シートが介装されることで、前記発振部材から前記プリント基板へ伝達された振動によって発生する異音を抑制できる。 In addition, an anti-vibration sheet is interposed between the printed board and the oscillation member outside the opening, so that abnormal noise generated by vibration transmitted from the oscillation member to the printed board is generated. Can be suppressed.
さらに請求項１に記載の発明は、前記開口部は、前記最外側の二つの端子に圧接して、該最外側の二つの端子を互いに近付く方向に付勢することを要旨とする。
同構成によれば、前記プリント基板及び前記発振部材の間に前記防振シートを介装する際、前記複数の端子を前記開口部に予め挿入しておけば、前記最外側の二つの端子が前記開口部に圧接することで、前記発振部材及び前記防振シートを仮組みすることができる。従って、前記防振シートの固定された前記発振部材の前記複数の端子を該当の前記スルーホールに挿入することで、前記プリント基板及び前記発振部材の間に前記防振シートを介装することができ、その組付性を向上させることができる。
The gist of the invention described in claim 1 is that the opening presses the two outermost terminals and urges the outermost two terminals toward each other .
According to this configuration, when the vibration-proof sheet is interposed between the printed circuit board and the oscillation member, if the plurality of terminals are inserted into the opening in advance, the outermost two terminals are By press-contacting the opening, the oscillation member and the vibration-proof sheet can be temporarily assembled. Therefore, by inserting the plurality of terminals of the oscillation member to which the vibration isolation sheet is fixed into the corresponding through hole, the vibration isolation sheet can be interposed between the printed board and the oscillation member. Can be improved.
請求項２に記載の発明は、請求項１に記載のプリント基板の異音防止構造において、前記最外側の二つの端子は、前記開口部に形成された鋭角部に挟まれた状態で、前記開口部に圧接していることを要旨とする。 According to a second aspect of the present invention, in the noise prevention structure for a printed circuit board according to the first aspect , the outermost two terminals are sandwiched between acute angle portions formed in the opening, and The gist is that it is in pressure contact with the opening.
同構成によれば、前記最外側の二つの端子は、前記鋭角部に挟まれた状態で前記開口部に圧接していることで、前記発振部材及び前記防振シートをより堅固に仮組みすることができる。
請求項３に記載の発明は、請求項２に記載のプリント基板の異音防止構造において、前記開口部は、前記最外側の二つの端子に圧接する二つの前記鋭角部を有する菱形であることを要旨とする。
According to this configuration, the outermost two terminals are in pressure contact with the opening while being sandwiched between the acute angle portions, so that the oscillation member and the vibration-proof sheet are more firmly temporarily assembled. be able to.
According to a third aspect of the present invention, in the structure for preventing abnormal noise of the printed circuit board according to the second aspect, the opening is a rhombus having the two acute angle portions pressed against the two outermost terminals. Is the gist.
本発明は、歩留まりを低下させることなく、発振部材からプリント基板へ伝達された振動によって発生する異音を抑制することができる効果がある。 INDUSTRIAL APPLICABILITY The present invention has an effect of suppressing abnormal noise generated by vibration transmitted from an oscillation member to a printed circuit board without reducing yield.
図１〜図２を参照して本発明の一実施形態について説明する。
図１（ａ）（ｂ）に示すように、プリント基板１０には、一方向に並設された複数（二つ）のスルーホール１１が形成されている。そして、プリント基板１０の一側面には、発振部材としてのブザー２０が実装されている。
An embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1A and 1B, a plurality of (two) through holes 11 arranged in one direction are formed in the printed circuit board 10. A buzzer 20 as an oscillation member is mounted on one side surface of the printed board 10.
すなわち、ブザー２０は、略円柱状の本体部２１と、該本体部２１のプリント基板１０に対向する部位から該プリント基板１０に向かって突設された複数（二つ）の略丸棒状の端子２２とを有する。これら端子２２は、スルーホール１１に対応して一方向に並設されており、該スルーホール１１に挿通されている。ブザー２０は、スルーホール１１を貫通する端子２２がはんだ２６を用いてはんだ付けされることでプリント基板１０に接合されている。 That is, the buzzer 20 includes a substantially cylindrical main body 21 and a plurality of (two) substantially round bar-shaped terminals protruding from the portion of the main body 21 facing the printed circuit board 10 toward the printed circuit board 10. 22. These terminals 22 are juxtaposed in one direction corresponding to the through hole 11 and are inserted through the through hole 11. The buzzer 20 is joined to the printed circuit board 10 by soldering a terminal 22 that penetrates the through hole 11 using a solder 26.
プリント基板１０及びブザー２０の間には、例えば柔軟なゴム、樹脂等からなる弾性変形可能な略円板状の防振シート３０が介装されている。この防振シート３０は、本体部２１の外径よりも大きい外径を有しており、該本体部２１と略同心円上に配置されている。防振シート３０には、略菱形の開口部３１が形成されている。この開口部３１は、単独で最外側の二つの端子としての両端子２２間を含む領域に広がっている。両端子２２の並設方向に一致する開口部３１の対角線方向の開口幅は、両端子２２間の距離と同等に設定されており、開口部３１は、当該対角線方向両側の角部をなす鋭角部３１ａにおいて両端子２２に圧接する。つまり、各端子２２は、該当の鋭角部３１ａに挟まれた状態で開口部３１に圧接している。 Between the printed circuit board 10 and the buzzer 20, an elastically deformable substantially disk-shaped vibration-proof sheet 30 made of, for example, flexible rubber or resin is interposed. The vibration isolating sheet 30 has an outer diameter larger than the outer diameter of the main body portion 21 and is disposed substantially concentrically with the main body portion 21. A substantially diamond-shaped opening 31 is formed in the vibration-proof sheet 30. The opening 31 extends to a region including the space between both terminals 22 as the two outermost terminals. The opening width in the diagonal direction of the opening 31 corresponding to the juxtaposed direction of both terminals 22 is set to be equal to the distance between the both terminals 22, and the opening 31 is an acute angle that forms corners on both sides in the diagonal direction. The part 31a is in pressure contact with both terminals 22. That is, each terminal 22 is in pressure contact with the opening 31 while being sandwiched between the corresponding acute angle portions 31a.
以上により、開口部３１の外側でプリント基板１０及びブザー２０（本体部２１）の間に防振シート３０が介装されていることで、ブザー２０からプリント基板１０へ伝達された振動によって発生する異音が抑制される。 As described above, the vibration-proof sheet 30 is interposed between the printed board 10 and the buzzer 20 (main body part 21) outside the opening 31, so that the vibration is transmitted from the buzzer 20 to the printed board 10. Abnormal noise is suppressed.
次に、本実施形態の組付時の動作について説明する。
まず、ブザー２０の両端子２２を、防振シート３０の開口部３１に挿通する。このとき、各端子２２が該当の鋭角部３１ａに挟まれた状態で開口部３１に圧接することで、ブザー２０及び防振シート３０が仮組みされる。このとき、両端子２２には、プリント基板１０の一側面に平行な互いに近付く方向の付勢力が加わる。従って、防振シート３０の固定されたブザー２０の端子２２を該当のスルーホール１１に挿入することで、プリント基板１０及びブザー２０（本体部２１）の間に防振シート３０が介装される。
Next, the operation at the time of assembly of this embodiment will be described.
First, the both terminals 22 of the buzzer 20 are inserted into the opening 31 of the vibration isolating sheet 30. At this time, the buzzer 20 and the vibration isolating sheet 30 are temporarily assembled by press-contacting each terminal 22 with the opening 31 in a state of being sandwiched between the corresponding acute angle portions 31a. At this time, an urging force in a direction approaching each other parallel to one side surface of the printed circuit board 10 is applied to both terminals 22. Therefore, the vibration isolating sheet 30 is interposed between the printed board 10 and the buzzer 20 (main body portion 21) by inserting the terminal 22 of the buzzer 20 to which the vibration isolating sheet 30 is fixed into the corresponding through hole 11. .
その後、スルーホール１１から突出する端子２２の先端部をはんだ槽の表層に浸して端子２２をはんだ付けする。
図２に拡大して示すように、この際、スルーホール１１及び端子２２の隙間全体にもはんだ２６が浸透しようとする。このとき、気化したフラックスは、スルーホール１１を通って防振シート３０の開口部３１へと導かれる。この開口部３１は、両端子２２間を含む領域、即ち全ての端子２２を含む領域に広がって十分な容積が確保されていることで、フラックスは、スルーホール１１を円滑に通過することになる。従って、スルーホール１１及び端子２２の隙間全体へのはんだ２６の浸透がより円滑化される。
Thereafter, the tip of the terminal 22 protruding from the through hole 11 is immersed in the surface layer of the solder bath to solder the terminal 22.
As shown in an enlarged view in FIG. 2, at this time, the solder 26 tends to penetrate into the entire gap between the through hole 11 and the terminal 22. At this time, the vaporized flux is guided to the opening 31 of the vibration-proof sheet 30 through the through hole 11. The opening 31 spreads in a region including the space between the terminals 22, that is, a region including all the terminals 22, and a sufficient volume is secured, so that the flux smoothly passes through the through hole 11. . Accordingly, the penetration of the solder 26 into the entire gap between the through hole 11 and the terminal 22 is further smoothed.
以上詳述したように、本実施形態によれば、以下に示す効果が得られるようになる。
（１）本実施形態では、端子２２をはんだ付けする際には、スルーホール１１及び端子２２の隙間にはんだ２６をより円滑に浸透させることができ、ブザー２０及びプリント基板１０の接合強度の不足による歩留まりの低下を抑制することができる。
As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In this embodiment, when soldering the terminal 22, the solder 26 can be more smoothly penetrated into the gap between the through hole 11 and the terminal 22, and the bonding strength between the buzzer 20 and the printed circuit board 10 is insufficient. It is possible to suppress a decrease in yield due to.
また、ブザー２０及びプリント基板１０の間には、開口部３１の外側で防振シート３０が介装されることで、ブザー２０及びプリント基板１０へ伝達された振動によって発生する異音を抑制できる。 In addition, an anti-vibration sheet 30 is interposed between the buzzer 20 and the printed circuit board 10 on the outside of the opening 31, so that noise generated by vibrations transmitted to the buzzer 20 and the printed circuit board 10 can be suppressed. .
（２）本実施形態では、プリント基板１０及びブザー２０の間に防振シート３０を介装する際、両端子２２を開口部３１に予め挿入しておけば、最外側の二つの端子としての両端子２２が開口部３１に圧接することで、ブザー２０及び防振シート３０を仮組みすることができる。従って、防振シート３０の固定されたブザー２０の両端子２２を該当のスルーホール１１に挿入することで、プリント基板１０及びブザー２０の間に防振シート３０を介装することができ、その組付性を向上させることができる。 (2) In the present embodiment, when the anti-vibration sheet 30 is interposed between the printed circuit board 10 and the buzzer 20, if both terminals 22 are inserted in the opening 31 in advance, the outermost two terminals The buzzer 20 and the vibration isolating sheet 30 can be temporarily assembled by the two terminals 22 being in pressure contact with the opening 31. Therefore, the vibration isolating sheet 30 can be interposed between the printed circuit board 10 and the buzzer 20 by inserting both terminals 22 of the buzzer 20 to which the vibration isolating sheet 30 is fixed into the corresponding through hole 11. Assembling property can be improved.
（３）本実施形態では、最外側の二つの端子としての両端子２２は、鋭角部３１ａに挟まれた状態で開口部３１に圧接していることで、ブザー２０及び防振シート３０をより堅固に仮組みすることができる。 (3) In the present embodiment, the two terminals 22 as the two outermost terminals are in pressure contact with the opening 31 while being sandwiched between the acute angle portions 31a, so that the buzzer 20 and the vibration isolating sheet 30 are more It can be firmly assembled temporarily.
（４）本実施形態では、開口部３１の内壁面同士が当接又は近接する部位が僅かであるため、防振シート３０自体の振動で内壁面同士が擦れて異音を発生することを防止できる。 (4) In this embodiment, since the inner wall surfaces of the opening 31 are in contact with or close to each other, the inner wall surfaces are prevented from rubbing due to vibration of the vibration isolating sheet 30 itself and generating noise. it can.
なお、上記実施形態は以下のように変更してもよい。
・前記実施形態において、開口部３１の鋭角部３１ａはなくてもよい。つまり、防振シート３０の開口部は、長円形や楕円形であってもよい。この場合、開口部の長径方向を両端子２２の並設方向に一致させることがより好ましい。
In addition, you may change the said embodiment as follows.
-In the said embodiment, the acute angle part 31a of the opening part 31 does not need to be. That is, the opening of the vibration-proof sheet 30 may be oval or elliptical. In this case, it is more preferable to match the major axis direction of the opening with the juxtaposed direction of the terminals 22.
・前記実施形態において、ブザー２０の両端子２２は、開口部３１に圧接していなくてもよい。
・前記実施形態においては、防振シート３０を円板状としたが、多角板状であってもよい。
In the above embodiment, the both terminals 22 of the buzzer 20 may not be in pressure contact with the opening 31.
-In the said embodiment, although the vibration isolating sheet 30 was made into disk shape, polygonal plate shape may be sufficient.
・前記実施形態においては、発振部材としてブザー２０を採用した。これに対し、発振部材としてリレー回路を採用してもよい。この場合、励磁コイルの通電するための二つの端子及びスイッチに繋げるための少なくとも二つの端子の全てを一方向に並設するとともに、防振シートに最外側の二つの端子間を含む領域に広がる単独の開口部を形成すればよい。 In the embodiment, the buzzer 20 is used as the oscillation member. On the other hand, a relay circuit may be employed as the oscillation member. In this case, all of the two terminals for energizing the exciting coil and at least two terminals for connecting to the switch are arranged in parallel in one direction, and the anti-vibration sheet extends to a region including between the two outermost terminals. A single opening may be formed.
１０…プリント基板、１１…スルーホール、２０…ブザー（発振部材）、２２…端子、２６…はんだ、３０…防振シート、３１…開口部、３１ａ…鋭角部。 DESCRIPTION OF SYMBOLS 10 ... Printed circuit board, 11 ... Through hole, 20 ... Buzzer (oscillation member), 22 ... Terminal, 26 ... Solder, 30 ... Vibration-proof sheet, 31 ... Opening part, 31a ... Acute angle part.
Claims (3)
前記防振シートは、最外側の二つの前記端子間を含む領域に広がる単独の開口部を有し、
前記開口部は、前記最外側の二つの端子に圧接して、該最外側の二つの端子を互いに近付く方向に付勢することを特徴とするプリント基板の異音防止構造。 An oscillation member mounted on the printed circuit board by soldering the printed circuit board, and a plurality of terminals arranged in parallel in one direction through the through holes formed in the printed circuit board; and An elastically deformable vibration-proof sheet interposed between the printed circuit board and the oscillation member,
The anti-vibration sheet have a opening single spreading region containing between two of said terminals of outermost,
The structure for preventing abnormal noise of a printed circuit board , wherein the opening presses the outermost two terminals and biases the outermost two terminals toward each other .
前記最外側の二つの端子は、前記開口部に形成された鋭角部に挟まれた状態で、前記開口部に圧接していることを特徴とするプリント基板の異音防止構造。 In the noise prevention structure of the printed circuit board of Claim 1 ,
The structure for preventing abnormal noise on a printed circuit board, wherein the two outermost terminals are in pressure contact with the opening in a state of being sandwiched between acute angles formed in the opening.
前記開口部は、前記最外側の二つの端子に圧接する二つの前記鋭角部を有する菱形であることを特徴とするプリント基板の異音防止構造。 The structure for preventing abnormal noise of a printed circuit board, wherein the opening is a rhombus having the two acute angle portions pressed against the two outermost terminals.
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| JP2012255515A JP6127467B2 (en) | 2012-11-21 | 2012-11-21 | Structure for preventing abnormal noise on printed circuit boards |
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| JPH0683009B2 (en) * | 1988-07-22 | 1994-10-19 | 日本電波工業株式会社 | Insulation plate and piezoelectric vibrator |
| JPH03119917U (en) * | 1990-03-20 | 1991-12-10 | ||
| JPH0645372U (en) * | 1992-11-20 | 1994-06-14 | アルパイン株式会社 | Electronic component mounting structure |
| JP3482507B2 (en) * | 1994-05-31 | 2003-12-22 | ジェーシーシーエンジニアリング株式会社 | Electronic component and method of manufacturing the same |
| JP4913960B2 (en) * | 2001-07-16 | 2012-04-11 | キヤノン株式会社 | Lens barrel |
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