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JP3901451B2 - Connection terminal fixing structure - Google Patents

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Publication number
JP3901451B2
JP3901451B2 JP2000400613A JP2000400613A JP3901451B2 JP 3901451 B2 JP3901451 B2 JP 3901451B2 JP 2000400613 A JP2000400613 A JP 2000400613A JP 2000400613 A JP2000400613 A JP 2000400613A JP 3901451 B2 JP3901451 B2 JP 3901451B2
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Japan
Prior art keywords
connection terminal
circuit board
printed circuit
unit
contact
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Expired - Fee Related
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JP2000400613A
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Japanese (ja)
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JP2002203629A (en
Inventor
修一 馬場崎
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Icom Inc
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Icom Inc
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Description

【0001】
【発明の属する技術分野】
本発明は、電気的な接触を確実にするために用いられる弾性を備えた導電性の接続端子の固定構造に関するものである。
【0002】
【従来の技術】
従来より、携帯用の電子機器等においては、電池パックを装着して使用される形態が多い。そのような電子機器における電池パックとの電気的接続部分の一例を図2に示して説明する。
図2において、電子機器側の電源端子101は電子機器のプリント基板102にハンダ付けされている。前記電源端子101は弾性を備えた導電性の線材を、電池パック側の電極と確実に接触するような所定形状に成形して構成されている。
そして、電池パック110が装着されると、前記電源端子101は電池パック110の電極に当接した状態でさらに押圧されて、2点鎖線で示したようにハンダ付け部分から先が弾性変形する。
このような状態によって、電池パックの電極と電源端子とは確実に電気的に接続されるのである。
【0003】
【発明が解決しようとする課題】
ところが、図2に示したように固定された電源端子の場合には、電池パックが装着される度にハンダ付け部分にストレスがかかり、ハンダに亀裂が生じたりして接触不良等のトラブルの原因となっていた。
また、前記電源端子を基板にハンダ付けする時、仮止めが難しく、何らかの治具を必要とする場合があった。
図2の場合におけるハンダ付け部分へのストレスを回避するために、例えば、電源端子をビスで基板に固定する等の対策が講じられる場合があるが、その場合には、ビス等の別部品が必要となりコストと手間がかかるという問題がある。

【0004】
そこで、本発明は、電源端子のハンダ付けされた部分へのストレスがかかり難い構造の電源端子の接続構造を提案することを目的としてなされたものである。
【0005】
【課題を解決するための手段】
本発明にかかる接続端子の固定構造においては、
第1ユニットと、第2ユニットを電気的に接続するために、前記第1ユニットを構成するプリント基板に固定され、第2ユニットを押し当てたときに弾性変形し得る弾性を備えた導電性の接続端子の固定構造において、
前記接続端子の基部は前記プリント基板の裏面にハンダ付けされ、
前記接続端子の基部の端部に曲成された鉤部は、前記プリント基板に設けられた差し込み孔に前記プリント基板の裏面から差し込まれて、該差し込み孔の表側かつ当該プリント基板の表面に当接して係止され、
前記接続端子の先部は前記第2ユニットを押し当てたとき弾性変形するとともに、
第2ユニットの電極に当接して電気的に接続するべく形成され、
前記接続端子の基部のハンダ付けされた部分と先部との間の一部分を前記プリント基板の縁部に接触させることによって、前記第2ユニットを押し当てた時に受ける弾性変形を抑制するべく保持されていて、
前記第2ユニットを押し当てた時に生じる力を前記鉤部が前記プリント基板の表面に接する部分で受ける構造とした。
【0006】
なお、前記接続端子は電源供給のための端子でも、信号伝達のための端子でもよい。
また、変形抑制構造は、外力を受ける先部と、固定された基部の間であれば、どこに配設してもよい。
【0007】
【発明の実施の形態】
以下に、本発明にかかる接続端子の固定構造を、その実施の形態を示した図面に基づいて詳細に説明する。
【0008】
図1は、前記実施形態にかかる接続端子の固定構造を備えた携帯電子機器の要部の断面図である。
図1において、
1は携帯電子機器であり、2は該携帯電子機器1のプリント基板3に固定された接続端子である。この接続端子2はプラス電極用とマイナス電極用とで一対設けられているが、両方ともほぼ同一構造であるため、その一方のみを図示して、他方は図示及び説明を省略した。
【0009】
前記接続端子2は弾性を備えた導電性の線材もしくは板材、具体的には金属製の線状バネもしくは金属製の板バネで形成されている。前記接続端子2の基部21はプリント基板3の裏面Bに形成された配線パターンの一部にハンダ付けされて固定されている。
接続端子2の基部21の端部に曲成された鉤部210は、プリント基板3に設けられた差し込み孔31に差し込まれて、該差し込み孔31の表側Aに係止されている。そして、接続端子2の先部22は図示した形状に曲成され、前記プリント基板3の表面A側に弾性変形可能に配設されている。
【0010】
前記携帯電子機器1に電池パック5が装着されると、電池パック5の電極は前記接続端子2に押し当てられる。従って、接続端子2は2点鎖線で示した状態に弾性変形する。
このとき、前記接続端子2の基部21はプリント基板3の裏面Bにハンダ付けされているとともに、その端部の鉤部210はプリント基板の差し込み孔31に差し込まれて係止されているので、プリント基板3から剥がれ落ちる等のトラブルは発生しない。特に、電池パックによって加えられた力によって生じる接続端子2の回転モーメントは、端部においては矢印で示したように時計回り方向となるが、このような回転モーメントは、差し込み孔31に係止されている鉤部210によって受け止められるので、接続端子2を回転させることにはならない。従って、ハンダ付けされた基部21へのストレスは殆ど発生しない。
【0011】
そして、電池パック5の装着によって前記先部22に加えられた力は、接続端子2とプリント基板3の縁部32との接触部位Cから先の部分を弾性変形させるが、上述した構造によって、前記接触部位Cから基部側へのストレスは減少する。即ち、接続端子2に加えられた外力は前記接触部位Cで受け止められることにより、基部21側へは外力がそのままは伝わらないように構成されているのである。
従って、前記接触部位Cから基部側へ位置しているハンダ付けされた基部21に加えられるストレスは少なくなり、ハンダに亀裂が生じたりすることが防止できる。
よって、接触不良等のトラブルの発生を防ぎ、信頼性の高い電気的接触が可能となるのである。
このような信頼性の高い電気的接触によって電池パック5から供給される電気エネルギーが携帯電子機器1の各部に供給されるのである。
【0012】
そして、電池パック5を取り外す時には、接続端子2は弾性復元力によって実線で示した状態に復元するのである。
このときも、ハンダ付けされた基部21に大きなストレスは発生しない。
【0013】
以上のように、ハンダ付けされた部分と、外力を受ける部分とを分離させたので、電池パック5の装着によるストレスがハンダ付けされた基部へ伝わりにくくしたので、ハンダに亀裂が生じたりすることが防止できるのである。
また、接続端子2の基部21に鉤部210を形成するともに、プリント基板3には差し込み孔31を設けたので、接続端子2の取り付けにあたって、接続端子2をプリント基板3に仮止する場合には、前記鉤部210を前記差し込み孔31に差し込むことによって、簡単に仮止が可能になった。従って、接続端子2のプリント基板3への取り付け作業も容易になった。
【0014】
なお、以上の実施形態においては、携帯電子機器1は特許請求の範囲の第1ユニットに対応し、電池パック5は第2ユニットに対応している。
【0015】
なお、以上の実施形態においては、前記接続端子は、携帯電子機器側に設けたが、電池パック側に設けてもよい。また、電池パックとの電気的接触部分に限らず、電気信号を伝達する電気的接触部分に設けてもよい。
【0016】
【発明の効果】
本発明によれば、第1ユニットと、第2ユニットを電気的に接続するために、前記第1ユニットのプリント基板に固定され、第2ユニットを押し当てたときに弾性変形し得る弾性を備えた導電性の接続端子の固定構造において、前記接続端子の基部は前記プリント基板の裏面にハンダ付けされ、前記接続端子の基部の端部に曲成された鉤部は、前記プリント基板に設けられた差し込み孔に差し込まれて、該差し込み孔の表側に係止され、前記第2ユニットを押し当てた時に受ける回転モーメントを受け止めるように構成したので、前記第2ユニットを押し当てた時に受ける、前記接続端子の基部のハンダ付けされた部分へのストレスが減少し、ハンダの亀裂等のトラブルが発生しにくくなった。
また、前記接続端子の基部と先部との間の一部分は、前記プリント基板の縁部に接触させることによって、前記第2ユニットを押し当てた時に受ける弾性変形を抑制するべく保持されているので、前記接触部位から基部側へのストレスは減少し、基部におけるハンダに亀裂が生じたりすることが防止できる。
従って、接続端子における接触不良を防ぎ信頼性を向上させることができるのである。また、ビス等の部品を使用することなく、上記効果が得られるので、低コストで信頼性の高い接続端子の固定構造を実現できる。
【図面の簡単な説明】
【図1】本発明にかかる接続端子の固定構造の実施の形態の構成を示した要部断面図である。
【図2】従来例の接続端子の固定構造の断面図である。
【符号の説明】
1 携帯電子機器(第1ユニット)
2 接続端子
21 接続端子の基部
210 鉤部
22 接続端子の先部
3 プリント基板
31 差し込み孔
32 縁部
5 電池パック(第2ユニット)
C 接触部位
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for fixing a conductive connection terminal having elasticity used to ensure electrical contact.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, portable electronic devices and the like are often used with a battery pack attached. An example of an electrical connection portion with a battery pack in such an electronic device will be described with reference to FIG.
In FIG. 2, a power supply terminal 101 on the electronic device side is soldered to a printed circuit board 102 of the electronic device. The power terminal 101 is formed by molding a conductive wire having elasticity into a predetermined shape so as to be surely in contact with the electrode on the battery pack side.
When the battery pack 110 is attached, the power supply terminal 101 is further pressed in contact with the electrodes of the battery pack 110, and the tip of the soldered portion is elastically deformed as indicated by a two-dot chain line.
In such a state, the electrode of the battery pack and the power supply terminal are reliably electrically connected.
[0003]
[Problems to be solved by the invention]
However, in the case of the power supply terminal fixed as shown in FIG. 2, the soldered portion is stressed every time the battery pack is mounted, and the solder is cracked, causing trouble such as poor contact. It was.
Further, when soldering the power supply terminal to the substrate, it is difficult to temporarily fix the power supply terminal, and a certain jig may be required.
In order to avoid stress on the soldered portion in the case of FIG. 2, for example, measures such as fixing the power supply terminal to the board with screws may be taken. There is a problem that it is necessary and costly.
.
[0004]
Therefore, the present invention has been made for the purpose of proposing a connection structure of power supply terminals having a structure in which stress is not easily applied to a soldered portion of the power supply terminal.
[0005]
[Means for Solving the Problems]
In the fixing structure of the connection terminal according to the present invention,
In order to electrically connect the first unit and the second unit, it is fixed to a printed circuit board that constitutes the first unit, and has a conductive property having elasticity that can be elastically deformed when the second unit is pressed. In the connection terminal fixing structure,
The base of the connection terminal is soldered to the back surface of the printed circuit board,
The flange portion bent at the end of the base portion of the connection terminal is inserted into the insertion hole provided in the printed circuit board from the back surface of the printed circuit board and contacts the front side of the insertion hole and the surface of the printed circuit board. It is locked in contact with each other,
The tip of the connection terminal is elastically deformed when pressed against the second unit,
Formed to contact and electrically connect to the electrode of the second unit;
A part between the soldered portion and the front portion of the base portion of the connection terminal is brought into contact with an edge portion of the printed circuit board, and thereby held to suppress elastic deformation received when the second unit is pressed. have been,
The force generated when the second unit is pressed is received by the portion where the collar portion contacts the surface of the printed board .
[0006]
The connection terminal may be a terminal for supplying power or a terminal for signal transmission.
Further, the deformation suppressing structure may be disposed anywhere as long as it is between the front portion receiving the external force and the fixed base portion.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Below, the fixing structure of the connection terminal concerning this invention is demonstrated in detail based on drawing which showed the embodiment.
[0008]
FIG. 1 is a cross-sectional view of a main part of a portable electronic device having a connection terminal fixing structure according to the embodiment.
In FIG.
Reference numeral 1 denotes a portable electronic device, and reference numeral 2 denotes a connection terminal fixed to the printed circuit board 3 of the portable electronic device 1. A pair of the connection terminals 2 are provided for the plus electrode and the minus electrode. Since both of them have substantially the same structure, only one of them is shown, and the other is not shown or described.
[0009]
The connection terminal 2 is formed of an electrically conductive wire or plate having elasticity, specifically, a metal linear spring or a metal leaf spring. The base 21 of the connection terminal 2 is soldered and fixed to a part of the wiring pattern formed on the back surface B of the printed circuit board 3.
The flange 210 bent at the end of the base 21 of the connection terminal 2 is inserted into the insertion hole 31 provided in the printed circuit board 3 and is locked to the front side A of the insertion hole 31. The tip 22 of the connection terminal 2 is bent into the shape shown in the figure, and is disposed on the surface A side of the printed circuit board 3 so as to be elastically deformable.
[0010]
When the battery pack 5 is attached to the portable electronic device 1, the electrode of the battery pack 5 is pressed against the connection terminal 2. Accordingly, the connection terminal 2 is elastically deformed to the state indicated by the two-dot chain line.
At this time, the base portion 21 of the connection terminal 2 is soldered to the back surface B of the printed circuit board 3, and the flange portion 210 at the end thereof is inserted and locked into the insertion hole 31 of the printed circuit board. Troubles such as peeling off from the printed circuit board 3 do not occur. In particular, the rotational moment of the connection terminal 2 generated by the force applied by the battery pack is clockwise as indicated by the arrow at the end, and such rotational moment is locked in the insertion hole 31. Therefore, the connecting terminal 2 is not rotated. Therefore, almost no stress is applied to the soldered base 21.
[0011]
The force applied to the tip portion 22 by mounting the battery pack 5 elastically deforms the tip portion from the contact portion C between the connection terminal 2 and the edge portion 32 of the printed circuit board 3. The stress from the contact part C to the base side is reduced. That is, the external force applied to the connection terminal 2 is received at the contact portion C, so that the external force is not transmitted as it is to the base 21 side.
Therefore, the stress applied to the soldered base portion 21 located on the base side from the contact portion C is reduced, and it is possible to prevent the solder from being cracked.
Therefore, troubles such as poor contact can be prevented and highly reliable electrical contact can be achieved.
The electrical energy supplied from the battery pack 5 is supplied to each part of the portable electronic device 1 by such highly reliable electrical contact.
[0012]
When the battery pack 5 is removed, the connection terminal 2 is restored to the state indicated by the solid line by the elastic restoring force.
At this time as well, no great stress is generated on the soldered base 21.
[0013]
As described above, since the soldered part and the part receiving the external force are separated, the stress due to the attachment of the battery pack 5 is not easily transmitted to the soldered base, and the solder may be cracked. Can be prevented.
Further, since the flange portion 210 is formed in the base portion 21 of the connection terminal 2 and the insertion hole 31 is provided in the printed circuit board 3, when the connection terminal 2 is temporarily fixed to the printed circuit board 3 when the connection terminal 2 is attached. Can be temporarily fixed by inserting the collar portion 210 into the insertion hole 31. Therefore, it is easy to attach the connection terminal 2 to the printed circuit board 3.
[0014]
In the above embodiments, the portable electronic apparatus 1 corresponds to the first unit in the claims, the battery pack 5 that corresponds to the second unit.
[0015]
In the above embodiment, the connection terminal is provided on the portable electronic device side, but may be provided on the battery pack side. Moreover, you may provide in the electrical contact part which transmits not only the electrical contact part with a battery pack but an electrical signal.
[0016]
【The invention's effect】
According to the present invention, in order to electrically connect the first unit and the second unit, the first unit is fixed to the printed circuit board of the first unit, and has elasticity that can be elastically deformed when the second unit is pressed. In the fixing structure of the conductive connection terminal, the base of the connection terminal is soldered to the back surface of the printed circuit board, and the flange bent at the end of the base of the connection terminal is provided on the printed circuit board. Inserted into the insertion hole, locked to the front side of the insertion hole, and configured to receive the rotational moment received when the second unit is pressed, so when the second unit is pressed, Stress on the soldered part of the base of the connection terminal is reduced, and troubles such as solder cracks are less likely to occur.
In addition, since a part between the base portion and the tip portion of the connection terminal is held in contact with the edge portion of the printed circuit board so as to suppress elastic deformation received when the second unit is pressed. The stress from the contact part to the base side can be reduced, and the solder at the base part can be prevented from cracking.
Therefore, it is possible to prevent contact failure at the connection terminal and improve reliability. Further, since the above-described effect can be obtained without using parts such as screws, it is possible to realize a connection terminal fixing structure with low cost and high reliability.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a principal part showing a configuration of an embodiment of a connection terminal fixing structure according to the present invention.
FIG. 2 is a cross-sectional view of a conventional connection terminal fixing structure.
[Explanation of symbols]
1 Portable electronic device (first unit)
2 connection terminal 21 connection terminal base 210 collar 22 connection terminal tip 3 printed circuit board 31 insertion hole 32 edge 5 battery pack (second unit)
C contact area

Claims (1)

第1ユニットと、第2ユニットを電気的に接続するために、前記第1ユニットを構成するプリント基板に固定され、第2ユニットを押し当てたときに弾性変形し得る弾性を備えた導電性の接続端子の固定構造において、
前記接続端子の基部は前記プリント基板の裏面にハンダ付けされ、
前記接続端子の基部の端部に曲成された鉤部は、前記プリント基板に設けられた差し込み孔に前記プリント基板の裏面から差し込まれて、該差し込み孔の表側かつ当該プリント基板の表面に当接して係止され、
前記接続端子の先部は前記第2ユニットを押し当てたとき弾性変形するとともに、
第2ユニットの電極に当接して電気的に接続するべく形成され、
前記接続端子の基部のハンダ付けされた部分と先部との間の一部分を前記プリント基板の縁部に接触させることによって、前記第2ユニットを押し当てた時に受ける弾性変形を抑制するべく保持されていて、
前記第2ユニットを押し当てた時に生じる力を前記鉤部が前記プリント基板の表面に接する部分で受けることを特徴とする接続端子の固定構造。
In order to electrically connect the first unit and the second unit, it is fixed to a printed circuit board that constitutes the first unit, and has a conductive property having elasticity that can be elastically deformed when the second unit is pressed. In the connection terminal fixing structure,
The base of the connection terminal is soldered to the back surface of the printed circuit board,
The flange portion bent at the end of the base portion of the connection terminal is inserted into the insertion hole provided in the printed circuit board from the back surface of the printed circuit board and contacts the front side of the insertion hole and the surface of the printed circuit board. It is locked in contact with each other,
The tip of the connection terminal is elastically deformed when pressed against the second unit,
Formed to contact and electrically connect to the electrode of the second unit;
A part between the soldered portion and the front portion of the base portion of the connection terminal is brought into contact with an edge portion of the printed circuit board, and thereby held to suppress elastic deformation received when the second unit is pressed. have been,
The connection terminal fixing structure , wherein a force generated when the second unit is pressed is received at a portion where the collar portion is in contact with the surface of the printed circuit board .
JP2000400613A 2000-12-28 2000-12-28 Connection terminal fixing structure Expired - Fee Related JP3901451B2 (en)

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