JP3847813B2 - Plug blade mounting structure - Google Patents

Plug blade mounting structure Download PDF

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Publication number
JP3847813B2
JP3847813B2 JP18077895A JP18077895A JP3847813B2 JP 3847813 B2 JP3847813 B2 JP 3847813B2 JP 18077895 A JP18077895 A JP 18077895A JP 18077895 A JP18077895 A JP 18077895A JP 3847813 B2 JP3847813 B2 JP 3847813B2
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JP
Japan
Prior art keywords
plug blade
blade
case
case half
plug
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP18077895A
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Japanese (ja)
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JPH097723A (en
Inventor
幸雄 折原
紀男 灘口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tabuchi Electric Co Ltd
Original Assignee
Tabuchi Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tabuchi Electric Co Ltd filed Critical Tabuchi Electric Co Ltd
Priority to JP18077895A priority Critical patent/JP3847813B2/en
Publication of JPH097723A publication Critical patent/JPH097723A/en
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Publication of JP3847813B2 publication Critical patent/JP3847813B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【産業上の利用分野】
この発明は、電気機器のケースに栓刃を取り付けるための栓刃の取付構造に関する。
【0002】
【従来の技術】
一般に、トランスのような電気機器と外部電源とを接続するために用いられる栓刃は、外部機器との接触や落下の際の衝撃などにより生じる外力から栓刃を保護するために、ケースに収納されている。
【0003】
図4に示すように、従来、栓刃1をケース2に取り付ける場合、ケース2へのインサート成型やトランスボビンとの一体成型などの方法が採られていた。この場合、栓刃1がすでにケース2内に収納された状態にあるので半田付けしにくいことやケース2内で栓刃1の位置が決まらないことから、栓刃1とトランスTとの接続には、通常、リード線Lまたは接触端子が用いられていた。
【0004】
【発明が解決しようとする課題】
しかしながら、従来構造においては、インサート成型や一体成型などで栓刃をケースに取り付けていたために、かかる複雑な成型工程が必要となり、コストダウンが困難であった。
【0005】
また、この場合、栓刃とプリント基板との接続に、リード線または接触端子が用いられていたため、部品点数が増え同様にコストダウンが困難であった。
【0006】
この発明は上記の問題点を解決して、低コストで栓刃をケースに取り付けることができる栓刃の取付構造を提供することを目的としている。
【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、この発明は、栓刃を取り付ける第1のケース半体と、この第1のケース半体に結合される第2のケース半体とからなり、上記栓刃に接続されるトランスを内部に収納するケースを備え、栓刃の先端側の突出部を、第1のケース半体に設けた貫通孔から突出させ、栓刃のつば部が第1のケース半体の内側に当接するようにして第1のケース半体に取り付け、栓刃の基端部を、第2のケース半体の底部に設けた支持溝部に嵌め込むようにして第2のケース半体に取り付けるとともに、栓刃を、前記トランスを搭載したプリント基板に貫通させ、栓刃の基端部近傍の半田付け部にプリント基板を半田付けして接続している。
【0008】
また、必要に応じて、上記栓刃の半田付け部に栓刃の熱伝導性を低下させる熱伝導抑制手段として貫通孔が設けられている。貫通孔の代わりに、細くした前記半田付け部を前記熱伝導抑制手段としてもよい。
【0009】
【作用】
この発明によれば、栓刃の先端側の突出部を第1のケース半体の貫通孔に取り付け、栓刃の基端部を第2のケース半体の底部に設けられた支持溝部に取り付けて、栓刃を取付ケースに支持するとともに、栓刃の基端部近傍の半田付け部にプリント基板を半田付けして接続している。従って、栓刃を取付ケースに取り付ける際に複雑な成型工程などが不要になり、また、栓刃とトランスとの接続用のリード線や接触端子が不要となる。
【0010】
また、必要に応じて、栓刃の半田付け部に栓刃の熱伝導性を低下させる熱伝導抑制手段として貫通孔が設けられている。従って、栓刃の熱伝導性が低くなり栓刃の半田付け性を向上することができる。貫通孔の代わりに、細くした前記半田付け部を前記熱伝導抑制手段とした場合でも、半田付け性を向上することができる。
【0011】
【実施例】
以下、この発明の実施例を図面に基づいて説明する。
図1に、この発明の一実施例に係る栓刃の取付構造の斜視図を示す。この取付構造のケース3は、左右一対(2本)の栓刃1,1、第1のケース半体4、および第2のケース半体6を備え、両ケース半体4,6は、栓刃1,1を取り付けた状態で端面12において固着されている。
【0012】
図2に、図1の断面図を示す。以下、この図によりケース3の構成を説明する。栓刃1は、先端側に突出部1aとその下方につば部1sを有し、基端側に基端部1cとその上方に半田付け部1bを有している。ケース3を構成する第1のケース半体4には、その上部に貫通孔5が設けられており、栓刃1の先端側の突出部1aはこの貫通孔5から突出される。
【0013】
第2のケース半体6には、その底部に支持溝部7が設けられており、栓刃1の基端部1cはこの支持溝部7に嵌め込まれる。また、トランスTのような電気機器を搭載したプリント基板Pは、栓刃1の基端部1c近傍の半田付け部1bで半田H付けして接続されている。なお、もう1つの栓刃1も同様に第1のケース半体4および第2のケース半体6に取り付けられている。従って、栓刃1,1の位置は、第1のケース半体4の貫通孔5の位置および第2のケース半体6の支持溝7の位置に基づいて決められる。
【0014】
このケース3は、以下のように組み立てられる。
まず、図2の栓刃1をプリント基板Pの所定位置で貫通させ、栓刃1の半田付け部1bにプリント基板Pの裏面を半田H付けして接続する。この場合、栓刃1はまだケース3に覆われておらず、周囲に障害となるような物が存在しないので、栓刃1とプリント基板Pの半田H付けが容易になる。従って、自動半田付け装置による自動半田付けも可能となる。なお、栓刃1とプリント基板Pとが半田H付けされることによって、電気的な接続だけでなく、プリント基板Pとケース3との固定にも兼用される。
【0015】
次に、栓刃1の半田付け部1bにプリント基板Pを接続した状態で、栓刃1の先端側の突出部1aを第1のケース半体4の貫通孔5から突出させ、栓刃1のつば部1sが貫通孔5周辺の第1のケース半体4の内側に当接するようにして、栓刃1の先端側を第1のケース半体4に取り付ける。そして、栓刃1の先端側を第1のケース半体4に取り付けた状態で、栓刃1の基端部1cを、第2のケース半体6の支持溝7に嵌め込むようにして、栓刃1の基端側を第2のケース半体6に取り付ける。その後、両ケース半体の端面12が接着剤などで固着される。こうして、第1のケース半体4と第2のケース半体6とに栓刃1を取り付けた状態で、ケース3が組み立てられる。
【0016】
これにより、栓刃1は、貫通孔5を有する第1のケース半体4と支持溝7を有する第2のケース半体6とにより支持されているので、ケース3の前後方向,左右方向の外力A〜Dが栓刃1に作用しても、これら外力A〜Dに抗して栓刃1が強固に保持される。従って、インサート成型などによる栓刃1のケースへの取り付けに比較しても外力に対する強度は低下することがなく、従来のケースに比較して、複雑な成型工程がないことによりコストダウンが図られる。また、栓刃1とプリント基板Pとを直半田付けで接続するので、従来の栓刃1を接続するためのリード線や接触端子が不要となるから、コストダウンが図られる。
【0017】
また、栓刃1の半田付け部1bに熱伝導抑制手段として図3のような所定の大きさの貫通孔8を設けてもよい。この貫通孔8は、栓刃1の形成のときに同時に設けられる。
【0018】
この貫通孔8により、半田付け部1bの熱伝導性が低くなるので、栓刃1の半田付け性が向上する。なお、貫通孔8を設ける代わりに半田付け部1bを細くして、栓刃1の熱伝導性を低下させてもよい。
【0019】
なお、この実施例では、熱伝導抑制手段を栓刃1とプリント基板の半田付けに用いているが、熱容量の大きい部品や端子などの半田付けに用いてもよい。
【0020】
【効果】
以上のように、この発明は、栓刃の先端側の突出部を第1のケース半体の貫通孔に取り付け、栓刃の基端部を第2のケース半体の支持溝部に取り付けて、栓刃をケースに支持するとともに、栓刃の半田付け部にプリント基板を半田付けして接続している。従って、栓刃をケースに取り付ける際に複雑な成型工程が不要となり、また、栓刃と電気機器との接続用のリード線や接触端子が不要となる。これにより、低コストで栓刃をケースに取り付けることができる栓刃の取付構造を提供することができる。
【0021】
また、必要に応じて、栓刃の半田付け部に栓刃の熱伝導性を低下させる熱伝導抑制手段が設けられている。従って、栓刃の熱伝導性が低くなり栓刃の半田付け性を向上することができる。
【図面の簡単な説明】
【図1】この発明の一実施例に係る栓刃の取付構造を示す斜視図である。
【図2】上記栓刃の取付構造を示す縦断面図である。
【図3】他の実施例を示す側面図である。
【図4】従来の栓刃の取付構造を示す断面図である。
【符号の説明】
1…栓刃、1a…突出部、1b…半田付け部、1c…基端部、1s…ストッパ、3…ケース、4…第1のケース半体、5…貫通孔、6…第2のケース半体、7…支持溝部、P…プリント基板。
[0001]
[Industrial application fields]
The present invention relates to a plug blade mounting structure for mounting a plug blade to a case of an electrical device.
[0002]
[Prior art]
In general, the blades used to connect electrical devices such as transformers and external power supplies are housed in cases to protect the blades from external forces caused by contact with external devices or impact when dropped. Has been.
[0003]
As shown in FIG. 4, conventionally, when the plug blade 1 is attached to the case 2, methods such as insert molding into the case 2 and integral molding with a transbobbin have been employed. In this case, since the plug blade 1 is already stored in the case 2, it is difficult to solder and the position of the plug blade 1 is not determined in the case 2. In general, a lead wire L or a contact terminal is used.
[0004]
[Problems to be solved by the invention]
However, in the conventional structure, since the plug blade is attached to the case by insert molding or integral molding, such a complicated molding process is required, and cost reduction is difficult.
[0005]
Further, in this case, since lead wires or contact terminals are used for connection between the plug blade and the printed circuit board, the number of parts is increased and it is difficult to reduce the cost.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems and to provide a plug blade attachment structure that can attach a plug blade to a case at a low cost.
[0007]
[Means for Solving the Problems]
To achieve the above object, the present invention comprises a first case half to which a blade is attached and a second case half coupled to the first case, and is connected to the blade. A case in which the transformer to be housed is housed, and the protruding portion on the distal end side of the plug blade is protruded from a through hole provided in the first case half, and the collar portion of the plug blade is the first case half Attaching to the first case half so as to contact the inside, and attaching the proximal end portion of the plug blade to the second case half so as to fit into a support groove provided at the bottom of the second case half The plug blade is passed through the printed board on which the transformer is mounted, and the printed board is soldered and connected to a soldering portion in the vicinity of the base end portion of the plug blade.
[0008]
Further, if necessary, a through hole is provided in the soldering portion of the plug blade as a heat conduction suppressing means for reducing the thermal conductivity of the plug blade. The thinned soldering portion may be used as the heat conduction suppressing means instead of the through hole.
[0009]
[Action]
According to this invention, the protruding portion on the distal end side of the plug blade is attached to the through hole of the first case half, and the base end portion of the plug blade is attached to the support groove provided on the bottom of the second case half. The plug blade is supported by the mounting case, and the printed board is soldered and connected to the soldering portion in the vicinity of the base end portion of the plug blade. Therefore, a complicated molding process or the like is not required when the plug blade is attached to the mounting case, and lead wires and contact terminals for connecting the plug blade and the transformer are not required.
[0010]
Moreover, if necessary, a through hole is provided in the soldering part of the blade as a heat conduction suppressing means for reducing the heat conductivity of the blade. Accordingly, the thermal conductivity of the plug blade is lowered, and the solderability of the plug blade can be improved. Even when the thinned soldering portion is used as the heat conduction suppressing means instead of the through hole, the solderability can be improved.
[0011]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of a stopper blade mounting structure according to one embodiment of the present invention. The case 3 having this mounting structure includes a pair of left and right (two) plug blades 1, 1, a first case half 4, and a second case half 6. The blades 1 and 1 are fixed on the end surface 12 with the blades 1 and 1 attached.
[0012]
FIG. 2 shows a cross-sectional view of FIG. Hereinafter, the configuration of the case 3 will be described with reference to FIG. The plug blade 1 has a protruding portion 1a on the distal end side and a collar portion 1s on the lower side, a proximal end portion 1c on the proximal end side, and a soldering portion 1b on the upper side. The first case half 4 constituting the case 3 is provided with a through hole 5 in the upper part thereof, and the protruding portion 1 a on the distal end side of the plug blade 1 protrudes from the through hole 5.
[0013]
The second case half 6 is provided with a support groove 7 at the bottom thereof, and the base end 1 c of the plug blade 1 is fitted into the support groove 7. A printed circuit board P on which an electrical device such as a transformer T is mounted is connected by soldering with a soldering portion 1b in the vicinity of the base end portion 1c of the plug blade 1. The other blade 1 is similarly attached to the first case half 4 and the second case half 6. Therefore, the positions of the plug blades 1, 1 are determined based on the positions of the through holes 5 of the first case half 4 and the positions of the support grooves 7 of the second case half 6.
[0014]
The case 3 is assembled as follows.
First, the plug blade 1 of FIG. 2 is penetrated at a predetermined position of the printed board P, and the back surface of the printed board P is soldered and connected to the soldering portion 1b of the plug blade 1. In this case, the plug blade 1 is not yet covered with the case 3, and there is no obstacle around the plug blade 1, so that the solder blade H and the printed board P can be easily soldered. Therefore, automatic soldering by an automatic soldering apparatus is also possible. The plug blade 1 and the printed circuit board P are soldered to be used not only for electrical connection but also for fixing the printed circuit board P and the case 3.
[0015]
Next, in a state where the printed board P is connected to the soldering portion 1b of the plug blade 1, the protruding portion 1a on the distal end side of the plug blade 1 is protruded from the through hole 5 of the first case half 4, and the plug blade 1 The tip end side of the plug blade 1 is attached to the first case half 4 so that the collar portion 1 s is in contact with the inside of the first case half 4 around the through hole 5. Then, with the distal end side of the plug blade 1 attached to the first case half 4, the base end 1c of the plug blade 1 is fitted into the support groove 7 of the second case half 6, so that the plug blade The base end side of 1 is attached to the second case half 6. Thereafter, the end faces 12 of both case halves are fixed with an adhesive or the like. In this way, the case 3 is assembled with the plug blade 1 attached to the first case half 4 and the second case half 6.
[0016]
Accordingly, the plug blade 1 is supported by the first case half 4 having the through-hole 5 and the second case half 6 having the support groove 7. Even if the external forces A to D act on the plug blade 1, the plug blade 1 is firmly held against these external forces A to D. Therefore, the strength against external force does not decrease even when compared with the case where the plug blade 1 is attached to the case by insert molding or the like, and the cost can be reduced because there is no complicated molding process compared to the conventional case. . In addition, since the plug blade 1 and the printed circuit board P are connected by direct soldering, lead wires and contact terminals for connecting the conventional plug blade 1 are not necessary, so that the cost can be reduced.
[0017]
Moreover, you may provide the through-hole 8 of the predetermined magnitude | size like FIG. 3 in the soldering part 1b of the blade 1 as a heat conduction suppression means. The through hole 8 is provided at the same time when the plug blade 1 is formed.
[0018]
Since the thermal conductivity of the soldering portion 1b is lowered by the through hole 8, the solderability of the plug blade 1 is improved. In addition, instead of providing the through hole 8, the soldering portion 1b may be thinned to reduce the thermal conductivity of the blade 1.
[0019]
In this embodiment, the heat conduction suppressing means is used for soldering the plug blade 1 and the printed board, but may be used for soldering a component or terminal having a large heat capacity.
[0020]
【effect】
As described above, the present invention attaches the protruding portion on the distal end side of the plug blade to the through hole of the first case half, attaches the base end portion of the plug blade to the support groove portion of the second case half, The blade is supported by the case, and the printed board is soldered to the soldering portion of the blade. Therefore, when the plug blade is attached to the case, a complicated molding process is not required, and lead wires and contact terminals for connecting the plug blade and the electric device are not required. Thereby, the attachment structure of the plug blade which can attach a plug blade to a case at low cost can be provided.
[0021]
Moreover, the heat conduction suppression means which reduces the heat conductivity of a plug blade is provided in the soldering part of the plug blade as needed. Accordingly, the thermal conductivity of the plug blade is lowered, and the solderability of the plug blade can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a stopper blade mounting structure according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a mounting structure of the plug blade.
FIG. 3 is a side view showing another embodiment.
FIG. 4 is a cross-sectional view showing a conventional plug blade mounting structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Plug blade, 1a ... Projection part, 1b ... Solder part, 1c ... Base end part, 1s ... Stopper, 3 ... Case, 4 ... 1st case half body, 5 ... Through-hole, 6 ... 2nd case Half, 7 ... support groove, P ... printed circuit board.

Claims (3)

栓刃を取り付ける第1のケース半体と、この第1のケース半体に結合される第2のケース半体とからなり、上記栓刃に接続されるトランスを内部に収納するケースを備え、
栓刃の先端側の突出部を、第1のケース半体に設けた貫通孔から突出させ、栓刃のつば部が第1のケース半体の内側に当接するようにして第1のケース半体に取り付け、
栓刃の基端部を、第2のケース半体の底部に設けた支持溝部に嵌め込むようにして第2のケース半体に取り付けるとともに、
栓刃を、前記トランスを搭載したプリント基板に貫通させ、栓刃の基端部近傍の半田付け部にプリント基板を半田付けして接続している栓刃の取付構造。
A first case half to which the blade is attached, and a second case half to be coupled to the first case half, and a case for accommodating therein a transformer connected to the blade.
The protrusion on the distal end side of the plug blade is protruded from a through hole provided in the first case half so that the flange of the plug blade comes into contact with the inside of the first case half. Attached to the body,
The base end of the blade is attached to the second case half so as to fit into the support groove provided at the bottom of the second case half,
A plug blade mounting structure in which a plug blade is passed through a printed board on which the transformer is mounted, and the printed board is soldered and connected to a soldering portion in the vicinity of the base end portion of the plug blade.
請求項1において、さらに、
上記栓刃の半田付け部に栓刃の熱伝導性を低下させる熱伝導抑制手段として貫通孔が設けられている栓刃の取付構造。
The claim 1, further comprising:
A plug blade mounting structure in which a through hole is provided in the soldering portion of the blade as a heat conduction suppressing means for reducing the heat conductivity of the blade.
請求項1において、細くした前記半田付け部を、栓刃の熱伝導性を低下させる熱伝導抑制
手段とした栓刃の取付構造。
According to claim 1, thinned said soldering portion, the attachment structure of the plug pins which was heat conduction suppressing means Ru lowers the thermal conductivity of the plug pins.
JP18077895A 1995-06-22 1995-06-22 Plug blade mounting structure Expired - Fee Related JP3847813B2 (en)

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JP18077895A JP3847813B2 (en) 1995-06-22 1995-06-22 Plug blade mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18077895A JP3847813B2 (en) 1995-06-22 1995-06-22 Plug blade mounting structure

Publications (2)

Publication Number Publication Date
JPH097723A JPH097723A (en) 1997-01-10
JP3847813B2 true JP3847813B2 (en) 2006-11-22

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JP5130948B2 (en) 2008-02-19 2013-01-30 ミツミ電機株式会社 AC adapter and assembling method thereof

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