【0001】
【発明の属する技術分野】
本発明は,主回路基板に取り付けられる副回路基板,及び副回路基板と主回路基板との組み合わせ回路基板に係り,特に主回路基板に設けられた副回路基板挿入孔に挿入して上記副回路基板を上記主回路基板に取り付けるための副回路基板,及び組み合わせ回路基板に関するものである。
【0002】
【従来の技術】
回路基板の構成には基板同士が組み合わせられた組み合わせ回路基板として構成されるものがある。図2に示される組み合わせ回路基板組み立て体20は,主回路基板21に副回路基板22,電解コンデンサ23,リレー24,トランス25,抵抗26等が取り付けられて構成されている。
従来,上記組み合わせ回路基板組み立て体20のごとく,副回路基板を主回路基板に取り付ける場合は,図3に示されるような長孔状の副回路基板挿入孔33を主回路基板31に設け,副回路基板32の電極部2を上記の副回路基板挿入孔33に挿入し,該電極部2と主回路基板の電極部1とをハンダ付けすることにより副回路基板32を主回路基板31に固定すると共に,対応する電極部を電気的に接続させていた。しかし,上記副回路基板挿入孔33は,挿入される副回路基板32の電極部2の損傷を防ぐために電極部2の挿入部の寸法より若干大きく形成されていたため,挿入時の副回路基板32と副回路基板挿入孔33との間に生じる隙間によりガタが発生する。そのため図4(a)のように,副回路基板が傾斜したままの状態でハンダ付けがなされることにより,正常に主回路基板31と副回路基板32とが接続されず,双方の電極部に非接触部分が生じる恐れがあった。また,この場合,図4(a)に示されるように,ハンダ付けだけで主回路基板31と副回路基板32とが固定されるため,副回路基板32に加わる小さな応力や振動により副回路基板32が傾斜し,それにより電極部やハンダ42の剥離が頻繁に生じていた(図4(b))。
【0003】
かかる問題を解消するために,長孔の一部分が狭められた副回路基板挿入孔51に副回路基板2を挿入することにより,副回路基板2を主回路基板1に嵌め込んで嵌合固定する方法がある(図5参照)。しかし,かかる方法では副回路基板52を主回路基板51に嵌め込むときに副回路基板挿入孔53の狭められた嵌合部54に対応する副回路基板52の電極部が損傷する恐れがあった。
【0004】
特許文献1には図6に示すように副回路基板62の挿入部両端に突起部材64を設け,かかる突起部材64を主回路基板61に設けられた狭目の突起挿入孔63に穿設することにより,主回路基板61に副回路基板62を取り付ける組み合わせ回路基板構造が提案されている。これにより副回路基板62が傾斜することなくハンダ付けすることができる。
【0005】
【特許文献1】
特開平10−145023号公報
【0006】
【発明が解決しようとする課題】
しかしながら,特許文献1に記載される組み合わせ回路基板構造は,水平方向に加わる応力や振動に対して強い構造をしているため,副回路基板の傾斜による電極部やハンダの剥離を有効に防止することができるが,鉛直方向へ応力や振動が加わった場合に生じ得る電極部やハンダの剥離を十分に防止することができる構造とはなっていない。
従って,本発明は上記事情に鑑みてなされたものであり,その目的とするところは,主回路基板の鉛直方向に取り付けられる副回路基板の取付を堅硬なものとし,主回路基板と副回路基板との電気的な接続の信頼性を高めることが可能な副回路基板を提供することにある。
【0007】
【課題を解決するための手段】
上記目的を達成するために本発明は,主回路基板に設けられた副回路基板挿入孔に挿入して上記主回路基板に取り付けられる副回路基板において,上記副回路基板挿入孔の端縁と係合する係合部が形成されてなることを特徴とする副回路基板として構成されている。この場合,上記副回路基板に形成された上記係合部が切欠きであることが望ましい。
このように構成される副回路基板は,主回路基板に設けられた従来の長孔状の副回路基板挿入孔に挿入され,そして主回路基板に対して水平方向にスライドさせることにより主回路基板に取り付けられる。これにより,主回路基板の鉛直方向に対する副回路基板の取付が堅硬になり,鉛直方向に加わる応力や振動の影響による電極部やハンダの剥離を有効に防止することができる。その結果,主回路基板と副回路基板との電気的な接続の信頼性が高まるという効果を奏する。
また,本発明は,上記係合部が形成された副回路基板と主回路基板とが組み合わせられてなることを特徴とする組み合わせ回路基板として捉えたものであってもよい。
【0008】
【発明の実施の形態】
以下添付図面を参照しながら,本発明の実施の形態について説明し,本発明の理解に供する。尚,以下の実施の形態は,本発明を具体化した一例であって,本発明の技術的範囲を限定する性格のものではない。
ここに,図1は本発明の実施の形態に係る副回路基板の取付構造と取付方法を説明する図であり,(a)は長孔状の副回路基板挿入孔13を備えた主回路基板11の上記副回路基板挿入孔13に副回路基板12を挿入する前段階を示す図,(b)は副回路基板挿入孔13に副回路基板12を挿入した状態を示す図,(c)は副回路基板12が主回路基板11に取り付けられた状態を示す図,(d)は副回路基板12の挿入方向から見たときの主回路基板11の形体を示す図である。
【0009】
主回路基板13には副回路基板12が挿入される長孔状の副回路基板挿入孔13が形成され,該副回路基板挿入孔13の周囲には副回路基板12の電極部2と電気的に接続される電極部1が配設されている。尚,副回路基板挿入孔13は特別な形状に加工されたものではなく,副回路基板11の挿入部が挿入され得る程度に形成された長孔である。また,副回路基板12には,主回路基板11の電極部1と電気的に接続される電極部2と,該副回路基板12の副回路基板挿入孔13への挿入部の端部に,副回路基板挿入孔13の端縁と係合する係合部の一例である切欠き14が形成されている。尚,上記切欠き14は上述したように副回路基板12の副回路基板挿入孔13への挿入部の一端にのみ形成されていてもよく,或いは両端に形成されていてもよい。
【0010】
次に副回路基板12を主回路基板11の副回路基板挿入孔13に挿入して取り付ける方法について説明する。
まず,副回路基板12を主回路基板11に形成された副回路基板挿入孔13に挿入する。かかる挿入は(a)に示すX方向,つまり主回路基板に対して鉛直方向に向かって挿入する。このとき,副回路基板12の挿入深さは切欠き14と副回路基板挿入孔13の端縁とが係合できる位置までとする((b)参照)。挿入後は,副回路基板12を(b)に示すY方向,つまり切欠き14が形成されている方向へ水平にスライドさせる。このようにして切欠き14と副回路基板挿入孔13の端縁とが係合され,即ち副回路基板12が主回路基板11に取り付けられる。
【0011】
上述のように主回路基板11に取り付けられた副回路基板12は,図1(c)に示されるように,上記切欠き14を挟む上側係合部15−1と下側係合部15−2とにより挟まれ,主回路基板11の鉛直方向に対して支持されることになるので,主回路基板11と副回路基板12は鉛直方向に対して堅硬に取り付けられる。その結果,副回路基板12の傾きが防止されることになる。従って,主回路基板11と副回路基板12の電極部がハンダによって電気的に接続されると,主回路基板11と副回路基板12との取付強度が更に増すので,主回路基板11の鉛直方向に加わる応力や振動の影響による電極部やハンダの剥離を有効に防止することができる。その結果,主回路基板11と副回路基板12との電気的な接続の信頼性が高まる効果を奏する。
【0012】
【発明の効果】
以上説明したように,本発明によれば,副回路基板に,主回路基板に設けられた副回路基板挿入孔の端縁と係合する係合部が形成されることにより,主回路基板と副回路基板とを鉛直方向に対して堅硬に取り付けることができるので,鉛直方向に加わる応力や振動の影響による電極部やハンダの剥離を有効に防止することができる。その結果,主回路基板と副回路基板との電気的な接続の信頼性が高まるという効果を奏する。
【図面の簡単な説明】
【図1】本発明の実施の形態に係る副回路基板の取付構造と取付方法を説明する図。
【図2】主回路基板と副回路基板とが組み合わせられた組み合わせ回路基板組み立て体の一例を表す斜視図。
【図3】従来の組み合わせ回路基板の取付構造を説明する。
【図4】従来の組み合わせ回路基板における主回路基板と副回路基板との取付状態を示す図。
【図5】従来の組み合わせ回路基板の取付構造を説明する。
【図6】特許文献1に異彩された発明にかかる主回路基板と副回路基板の取付構造を説明する図である。
【符号の説明】
1…主回路基板電極部(電極パターン)
2…副回路基板電極部(電極パターン)
11,21,31,51,61…主回路基板
12,22,32,52,62…副回路基板
13,33,53…副回路基板挿入孔
14…切欠き
15−1…上側係合部
15−2…下側係合部
20…組み合わせ回路基板組み立て体
23…電解コンデンサ
24…リレー
25…トランス
26…抵抗
42…ハンダ
54…嵌合部
63…突起挿入孔
64…突起部材[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sub-circuit board mounted on a main circuit board, and a combined circuit board comprising a sub-circuit board and a main circuit board. In particular, the present invention relates to a sub-circuit board inserted into a sub-circuit board insertion hole provided in the main circuit board. The present invention relates to a sub-circuit board for attaching a board to the main circuit board, and a combined circuit board.
[0002]
[Prior art]
There is a configuration of a circuit board configured as a combination circuit board in which the boards are combined. The combined circuit board assembly 20 shown in FIG. 2 is configured by attaching a sub-circuit board 22, an electrolytic capacitor 23, a relay 24, a transformer 25, a resistor 26, and the like to a main circuit board 21.
Conventionally, when the sub-circuit board is attached to the main circuit board as in the above-described combined circuit board assembly 20, an elongated sub-circuit board insertion hole 33 as shown in FIG. The sub-circuit board 32 is fixed to the main circuit board 31 by inserting the electrode section 2 of the circuit board 32 into the sub-circuit board insertion hole 33 and soldering the electrode section 2 and the electrode section 1 of the main circuit board. At the same time, the corresponding electrode portions are electrically connected. However, the sub-circuit board insertion hole 33 is formed slightly larger than the dimension of the insertion portion of the electrode portion 2 in order to prevent the electrode portion 2 of the sub-circuit board 32 to be inserted. A play is generated due to a gap generated between the hole and the sub-circuit board insertion hole 33. Therefore, as shown in FIG. 4A, the soldering is performed in a state where the sub-circuit board is inclined, so that the main circuit board 31 and the sub-circuit board 32 are not normally connected, and both the electrode portions are connected. There was a possibility that a non-contact portion may occur. In this case, as shown in FIG. 4A, the main circuit board 31 and the sub-circuit board 32 are fixed only by soldering. As a result, the electrode portion and the solder 42 were frequently peeled off (FIG. 4B).
[0003]
In order to solve this problem, the sub-circuit board 2 is inserted into the sub-circuit board insertion hole 51 in which a part of the long hole is narrowed, so that the sub-circuit board 2 is fitted and fixed to the main circuit board 1. There is a method (see FIG. 5). However, in this method, when the sub-circuit board 52 is fitted into the main circuit board 51, there is a possibility that the electrode portion of the sub-circuit board 52 corresponding to the fitting portion 54 in which the sub-circuit board insertion hole 53 is narrowed may be damaged. .
[0004]
In Patent Document 1, as shown in FIG. 6, protrusion members 64 are provided at both ends of an insertion portion of a sub-circuit board 62, and the protrusion members 64 are formed in narrow protrusion insertion holes 63 provided in the main circuit board 61. Accordingly, a combination circuit board structure in which the sub-circuit board 62 is attached to the main circuit board 61 has been proposed. Thus, the sub-circuit board 62 can be soldered without being inclined.
[0005]
[Patent Document 1]
JP-A-10-145023
[Problems to be solved by the invention]
However, since the combined circuit board structure described in Patent Document 1 has a structure that is strong against stress and vibration applied in the horizontal direction, peeling of the electrode portion and the solder due to the inclination of the sub-circuit board is effectively prevented. However, it does not have a structure capable of sufficiently preventing the peeling of the electrode portion and the solder which may occur when a stress or vibration is applied in the vertical direction.
Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rigid mounting of a sub-circuit board which is mounted in a vertical direction of a main circuit board. An object of the present invention is to provide a sub-circuit board capable of improving the reliability of electrical connection with the sub-circuit.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention relates to a sub circuit board which is inserted into a sub circuit board insertion hole provided in the main circuit board and is attached to the main circuit board. It is configured as a sub-circuit board characterized in that a mating engaging portion is formed. In this case, it is desirable that the engaging portion formed on the sub-circuit board is a notch.
The sub-circuit board thus configured is inserted into the conventional long-hole-shaped sub-circuit board insertion hole provided on the main circuit board, and is slid horizontally with respect to the main circuit board. Attached to. Thus, the sub-circuit board can be firmly attached to the main circuit board in the vertical direction, and peeling of the electrode portion and the solder due to the influence of the stress and vibration applied in the vertical direction can be effectively prevented. As a result, there is an effect that the reliability of the electrical connection between the main circuit board and the sub circuit board is improved.
Further, the present invention may be regarded as a combined circuit board characterized in that the sub-circuit board on which the engaging portion is formed and the main circuit board are combined.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings to facilitate understanding of the present invention. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention.
FIG. 1 is a view for explaining a mounting structure and a mounting method of a sub-circuit board according to an embodiment of the present invention. FIG. 1 (a) shows a main circuit board having an elongated sub-circuit board insertion hole 13. 11 is a view showing a stage before the sub-circuit board 12 is inserted into the sub-circuit board insertion hole 13, (b) is a view showing a state where the sub-circuit board 12 is inserted into the sub-circuit board insertion hole 13, and (c) is a view showing FIG. 3D is a diagram illustrating a state where the sub-circuit board 12 is mounted on the main circuit board 11, and FIG.
[0009]
An elongated sub-circuit board insertion hole 13 into which the sub-circuit board 12 is inserted is formed in the main circuit board 13, and around the sub-circuit board insertion hole 13, the electrode portion 2 of the sub-circuit board 12 is electrically connected. The electrode section 1 connected to the power supply is provided. The sub-circuit board insertion hole 13 is not formed into a special shape, but is an elongated hole formed so that the insertion portion of the sub-circuit board 11 can be inserted. The sub-circuit board 12 has an electrode portion 2 electrically connected to the electrode portion 1 of the main circuit board 11 and an end of an insertion portion of the sub-circuit board 12 inserted into the sub-circuit board insertion hole 13. A notch 14 is formed as an example of an engaging portion that engages with the edge of the sub circuit board insertion hole 13. The notch 14 may be formed at only one end of the insertion portion of the sub-circuit board 12 into the sub-circuit board insertion hole 13 as described above, or may be formed at both ends.
[0010]
Next, a method of inserting the sub-circuit board 12 into the sub-circuit board insertion hole 13 of the main circuit board 11 and attaching the same will be described.
First, the sub-circuit board 12 is inserted into the sub-circuit board insertion hole 13 formed in the main circuit board 11. Such insertion is performed in the X direction shown in FIG. 7A, that is, in the direction perpendicular to the main circuit board. At this time, the insertion depth of the sub-circuit board 12 is set to a position where the notch 14 and the edge of the sub-circuit board insertion hole 13 can be engaged (see (b)). After the insertion, the sub-circuit board 12 is slid horizontally in the Y direction shown in FIG. In this manner, the notch 14 and the edge of the sub circuit board insertion hole 13 are engaged, that is, the sub circuit board 12 is attached to the main circuit board 11.
[0011]
As shown in FIG. 1C, the sub-circuit board 12 attached to the main circuit board 11 has an upper engaging portion 15-1 and a lower engaging portion 15- 2 and supported in the vertical direction of the main circuit board 11, the main circuit board 11 and the sub-circuit board 12 are rigidly mounted in the vertical direction. As a result, the inclination of the sub-circuit board 12 is prevented. Accordingly, when the electrode portions of the main circuit board 11 and the sub-circuit board 12 are electrically connected by solder, the mounting strength between the main circuit board 11 and the sub-circuit board 12 is further increased. It is possible to effectively prevent peeling of the electrode portion and the solder due to the influence of the stress and vibration applied to the electrode. As a result, there is an effect that the reliability of the electrical connection between the main circuit board 11 and the sub-circuit board 12 is improved.
[0012]
【The invention's effect】
As described above, according to the present invention, the engagement portion that engages with the edge of the sub circuit board insertion hole provided in the main circuit board is formed on the sub circuit board, so that the Since the sub-circuit board and the sub-circuit board can be rigidly mounted in the vertical direction, the separation of the electrode portion and the solder due to the influence of the stress and vibration applied in the vertical direction can be effectively prevented. As a result, there is an effect that the reliability of the electrical connection between the main circuit board and the sub circuit board is improved.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a mounting structure and a mounting method of a sub-circuit board according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating an example of a combined circuit board assembly in which a main circuit board and a sub circuit board are combined.
FIG. 3 illustrates a mounting structure of a conventional combination circuit board.
FIG. 4 is a diagram showing an attached state of a main circuit board and a sub circuit board in a conventional combination circuit board.
FIG. 5 illustrates a mounting structure of a conventional combination circuit board.
FIG. 6 is a diagram illustrating a mounting structure of a main circuit board and a sub circuit board according to the invention that is characterized by Patent Document 1.
[Explanation of symbols]
1: Main circuit board electrode (electrode pattern)
2 ... Sub circuit board electrode part (electrode pattern)
11, 21, 31, 51, 61 ... main circuit boards 12, 22, 32, 52, 62 ... sub-circuit boards 13, 33, 53 ... sub-circuit board insertion holes 14 ... notches 15-1 ... upper engaging portions 15 -2: Lower engaging portion 20: Combination circuit board assembly 23: Electrolytic capacitor 24: Relay 25: Transformer 26: Resistor 42: Solder 54: Fitting portion 63: Projection insertion hole 64: Projection member