JP2518466B2

JP2518466B2 - Watch machine

Info

Publication number: JP2518466B2
Application number: JP3309140A
Authority: JP
Inventors: 剛早川; 功人渡辺
Original assignee: Seikosha KK
Current assignee: Seikosha KK
Priority date: 1991-11-25
Filing date: 1991-11-25
Publication date: 1996-07-24
Anticipated expiration: 2011-07-24
Also published as: JPH055790A

Description

Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、電池接片と回路ユニッ
トとが相互に接続されている時計機械体に関するもので
ある。The present invention relates are those which relate to the watch mechanical body and a battery contact piece and the circuit unit are interconnected.

【０００２】[0002]

【従来の技術】従来から電池接片と回路ユニットとが相
互に接続されている時計機械体には、第１の例として、
電池接片と回路ユニットの所定の回路パターンとの接続
のため、電池接片に２股状接続部を設けて、回路ユニッ
トを構成する基板をこの２股状接続部で挟み込み、基板
上の回路パターンに弾接させるものがある。また、第２
の例として、電池接片を回路ユニットの回路パターン上
に半田付けして接続するものがある。さらに、第３の例
として、電池接片を屈曲させてばね部を設け、このばね
部を所定の接触圧で回路パターンに弾接させるものなど
がある。 2. Description of the Related Art Conventionally, a battery contact piece and a circuit unit are in phase with each other.
As a first example, the timepiece machines connected to each other are:
Connection between the battery contact piece and the specified circuit pattern of the circuit unit
For, provided bifurcated connecting portion to the battery contact piece, sandwiching the substrate of the circuit unit in the bifurcated connection portion, there is to be elastically contacted to the circuit pattern on the substrate. Also, the second
As an example, there is one in which the battery contact piece is soldered and connected on the circuit pattern of the circuit unit . Furthermore, the third example
As the spring portion provided by bending the battery contact piece, such as for elastic contact with the spring portion in the circuit pattern with a predetermined contact pressure
There is.

【０００３】[0003]

【発明が解決しようとする課題】しかし、上記従来技術
の第１のものは、２股状部の寸法精度が悪いと、基板を
確実に挾持できなかったり、基板を削り込んだりして接
触が不安定となる恐れがある。従って、接続の安定性を
高めるためには、２股状部の間隔と基板の厚さとの誤差
をできるだけ小さくする必要があるので、電池接片側の
部品に極めて高い精度が要求される。また、第２のもの
は、電池接片と回路ユニットとの導通の信頼性、安定性
は高いが、時計機械体の組立工程の途中でその都度半田
付けをしていては、半田が固化するのに時間がかかるた
め、サイクルタイムが長くなる。一方、予め半田付けを
行なってから時計機械体を組み立てる場合には、組立作
業時において、電池接片と回路ユニットとを一体化した
部材の取り扱いが煩雑で時計機械体内部への組み込みが
面倒になるなどの問題がある。さらに、第３のものは、
クリープなどにより時間の経過とともにばね部の押圧力
が不十分になって、接触が不安定となる恐れがあった。
このため、接触力の維持のために、予め基板に電池接片
をねじで締め付けることが要求される場合があり、部品
点数が多くなる。 However, the above-mentioned prior art
In the first type, if the dimensional accuracy of the bifurcated portion is poor, there is a possibility that the substrate cannot be gripped reliably or the substrate is carved in, resulting in unstable contact. Therefore, in order to improve the stability of the connection, it is necessary to minimize the error between the distance between the forked portions and the thickness of the substrate .
Extremely high precision is required for parts. Also the second one
Has high reliability and stability of continuity between the battery contact piece and the circuit unit, but soldering is required each time during the assembly process of the watch mechanical body.
It took a while for the solder to solidify
Therefore, the cycle time becomes longer. On the other hand, pre-solder
If you want to assemble the watch mechanical body after
At the time of business, there is a problem in that the handling of the member in which the battery contact piece and the circuit unit are integrated is complicated and the assembly into the timepiece mechanical body is troublesome . And the third one is
There is a possibility that contact force may become unstable due to insufficient pressing force of the spring portion due to creep or the like over time.
Therefore, in order to maintain the contact force, the battery
It may be required to screw the
The score increases.

【０００４】そこで本発明の目的は、下ケースと上ケー
スとの間に、電池接片とリードフレーム式の回路ユニッ
トと時計輪列などからなる構成要素群が配置され、かつ
下ケースと上ケースとを連結することにより、構成要素
群が離脱不能に支持される時計機械体において、組立工
程の最終段階で電池接片と回路ユニットとをスポット溶
接することを可能にし、接続の自動化および高速化を図
り、それと同時に接続の信頼性を向上させた時計機械体
を提供することにある。Therefore, an object of the present invention is to connect a battery contact piece and a lead frame type circuit unit between the lower case and the upper case.
And a component group consisting of
By connecting the lower case and the upper case,
In a watch machine body in which a group is supported irremovably,
Spot welding the battery contact and the circuit unit at the final stage.
Allows you to touch, automates and speeds up connections
And at the same time, a watch mechanical body with improved connection reliability.
To provide.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するた
め、本発明は、下ケースと上ケースとの間に、電池接片
とリードフレーム式の回路ユニットと時計輪列などから
なる構成要素群が配置され、かつ下ケースと上ケースと
を連結することにより構成要素群が離脱不能に支持され
る時計機械体において、電池接片の接続部とリードフレ
ームの接続部とが、下ケースと上ケースとの間で対接す
るように重なっており、下ケース及び上ケースには、両
接続部が対接する位置に向って突出する中空の筒状部が
それぞれ一体的に形成してあり、両筒状部は、両接続部
を中空部よりスポット溶接する際に両筒状部の各端面に
よって両接続部を挾持し得る長さに形成してあることを
特徴としている。 To achieve the above object, the present invention provides a group of components including a battery contact piece, a lead frame type circuit unit, a timepiece train wheel, and the like between a lower case and an upper case. Are placed , and the lower case and upper case
By connecting the
In the watch mechanical body,
And the connecting part of the arm between the lower case and the upper case
The upper and lower cases are
The hollow cylindrical part that protrudes toward the position where the connection part contacts
They are integrally formed, and both tubular parts are both connecting parts.
When spot welding from the hollow part to each end surface of both tubular parts
Therefore, make sure that both connection parts are formed with a length that can be held.
It has a feature.

【０００６】[0006]

【作用】本発明の構成では、下ケースと上ケースから突
出する中空の筒状部の先端面間にリードフレームの接続
部と電池接片の接続部とを重なった状態で挾持可能であ
り、両接続部は両筒状部により挾持した状態でスポット
溶接されている。すなわち、組立工程の最終段階で両接
続部をスポット溶接することが可能になり、電気的及び
機械的な接続が瞬時に確実に行なえる。In the structure of the present invention, the lower case and the upper case project.
Connect the lead frame between the tips of the hollow cylindrical parts
Part and the connection part of the battery contact piece can be sandwiched and held.
Both connection parts are spotted with both tubular parts sandwiched between them.
It is welded. In other words, both sides are contacted at the final stage of the assembly process.
It becomes possible to spot-weld the connecting portion, and electrical and mechanical connections can be made instantaneously and reliably .

【０００７】[0007]

【実施例】以下、図面を参照して、本発明の一実施例を
説明する。図１に示すように、下ケース２と上ケース１
との間には、電池接片６，回路ユニットを構成するリー
ドフレーム４（図３参照），時計輪列３からなる構成要
素群が収納配置してある。時計輪列３は、詳細について
は図示しないが、時針車，分針車などの歯車と中板等を
含むものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the lower case 2 and the upper case 1
A component group including a battery contact piece 6, a lead frame 4 (see FIG. 3) that constitutes a circuit unit, and a timepiece train wheel 3 is housed between and. Although not shown in detail, the clock train 3 includes gears such as an hour hand wheel and a minute hand wheel and an intermediate plate.

【０００８】下ケース２の下側部には、金属薄板にて形
成された図３に示すような形状のリードフレーム４が配
置してある。リードフレーム４は、駆動コイル（図示せ
ず。）のコイルボビン７に取り付けられており、集積回
路８，水晶発振器９等の回路素子が接続されて、回路ユ
ニットが構成されている。 The lower part of the lower case 2 is formed of a thin metal plate.
The lead frame 4 having the shape shown in FIG.
I put it. The lead frame 4 is attached to a coil bobbin 7 of a drive coil (not shown), and circuit elements such as an integrated circuit 8 and a crystal oscillator 9 are connected to the lead frame 4 to form a circuit unit.
The knit is made up.

【０００９】下ケース２の一側部（図面右側）には、電
池収納部５が設けてあり、この電池収納部の一端（図面
下側）には、リードフレーム４から延伸して形成されて
いるプラスの電池接片部４ａが配設してある。また、電
池収納部５の他端（図面上側）には、マイナスの電池接
片６の接点部６ａが配設してあり、このマイナスの電池
接片６はＬ字状に屈曲して延伸しており、接点部６ａの
反対側の接続部６ｂは、リードフレーム４の導体片の一
部に形成された接続部４ｂと対接するように重なってい
る。 One side of the lower case 2 (on the right side of the drawing) has an electric
A pond storage unit 5 is provided, and one end of this battery storage unit (see the drawing
The lower side) is formed by extending from the lead frame 4.
A positive battery contact piece 4a is provided. Also,
Connect the negative battery to the other end (upper side of the drawing) of the pond storage unit 5.
The contact portion 6a of the piece 6 is provided, and this negative battery
The contact piece 6 is bent and extended in an L-shape, and
The connecting portion 6b on the opposite side is one of the conductor pieces of the lead frame 4.
Overlapping so as to contact the connecting portion 4b formed on the
It

【００１０】この構成をさらに具体的に説明すると、リ
ードフレーム４には、図３に示すように１つの導体片を
屈成して接続部４ｂが形成してあり、図２に示すよう
に、この接続部４ｂとマイナスの電池接片６の接続部６
ｂとが、相互の面で対接するように重なっている。 The structure will be described more specifically.
As shown in FIG. 3, one conductor piece is attached to the lead frame 4.
As shown in FIG. 2, the connecting portion 4b is formed by bending.
In addition, the connection portion 6 of this connection portion 4b and the negative battery contact piece 6
and b are overlapped so as to be in contact with each other.

【００１１】このように両接続部４ｂ，６ｂが対接する
ように重なった状態は、以下の構成により保たれてい
る。すなわち、上ケース１と下ケース２には、図２に示
すように、互いに対向するように内側に突出する中空の
筒状部１ｂ，２ｂが設けられ、この筒状部１ｂ，２ｂの
先端面には開口部１ａ，２ａがそれぞれ穿設されてい
る。筒状部１ｂ，２ｂの先端の開口部１ａ，２ａは、接
続部４ｂ，６ｂを介して近接対向している。このように
中空の筒状部１ｂ，２ｂは、両接続部４ｂ，６ｂが対接
する位置に向かって突設されており、この両筒状部１
ｂ，２ｂの先端面間で両接続部４ｂ，６ｂが挟持されて
いる。従って、両接続部４ｂ，６ｂは筒状部１ｂ，２ｂ
の開口部１ａ，２ａを介して外部に露出状態となってい
る。そして、両接続部４ｂ，６ｂは両筒状部１ｂ，２ｂ
間においてスポット溶接されている。 In this way, the connecting portions 4b and 6b are in contact with each other.
The overlapping state is maintained by the following configuration.
It That is, the upper case 1 and the lower case 2 are shown in FIG.
Hollows that project inward so that they face each other.
The tubular portions 1b and 2b are provided, and the tubular portions 1b and 2b are
Openings 1a and 2a are formed in the tip end surface, respectively.
It The openings 1a and 2a at the tips of the tubular portions 1b and 2b are in contact with each other.
They are closely opposed to each other via the connecting portions 4b and 6b. in this way
The hollow cylindrical portions 1b and 2b are in contact with both connecting portions 4b and 6b.
These tubular parts 1 are projected toward the position where
Both connection parts 4b and 6b are sandwiched between the tip surfaces of b and 2b.
I have. Therefore, the connecting portions 4b and 6b are connected to the tubular portions 1b and 2b.
Is exposed to the outside through the openings 1a and 2a of
It The connecting portions 4b and 6b are connected to the tubular portions 1b and 2b.
Spot welded between.

【００１２】次に、この時計機械体の組立方法について
説明する。組み立てに際しては、まず、下ケース２上に
時計輪列３、回路ユニットであるリードフレーム４、電
池接片６などの構成要素群を組み込み、上ケース１をこ
の下ケース２に連結して構成要素群を離脱不能に支持す
る。この状態では、上ケース１と下ケース２に突設され
た中空の筒状部１ｂ，２ｂの先端面の間に、リードフレ
ーム４の接続部４ｂとマイナス電池接片６の接続部６ｂ
とが、対接するように重なって挟持されており、筒状部
１ｂ，２ｂの開口部１ａ，２ａを介して、接続部４ｂ，
６ｂは外部に露出した状態である。 Next, regarding the method of assembling this timepiece mechanical body
explain. When assembling, first place it on the lower case 2.
Clock train 3, lead frame 4 which is a circuit unit, electric
Incorporate a group of components such as the pond contact piece 6 into the upper case 1.
Connected to the lower case 2 to support the component group in a detachable manner
It In this state, the upper case 1 and the lower case 2 are projected.
Between the tip surfaces of the hollow cylindrical portions 1b and 2b, the lead frame is
Connecting part 4b of the battery 4 and connecting part 6b of the negative battery contact piece 6
And are sandwiched so as to face each other, and the cylindrical part
Through the openings 1a and 2a of 1b and 2b, the connecting portion 4b,
6b is a state of being exposed to the outside.

【００１３】そこで組み立ての最終工程として、重なっ
ている接続部４ｂと６ｂとを、筒状部１ｂ，２ｂ間にお
いてスポット溶接する。溶接方法の一例としては、図２
に示すように、スポット溶接用の電極棒１０，１１を筒
状部１ｂ，２ｂの開口部１ａ，２ａから挿入し、接続部
６ｂと接続部４ｂに上下から当接させて行うスポット溶
接がある。 Therefore, as the final process of assembly,
Connect the connecting portions 4b and 6b that are connected between the tubular portions 1b and 2b.
Spot welding. As an example of the welding method, FIG.
As shown in, cylindrical electrode rods 10 and 11 for spot welding
Inserted from the openings 1a, 2a of the shaped portions 1b, 2b, the connection portion
There is spot welding performed by contacting 6b and the connecting portion 4b from above and below .

【００１４】このように、接続部４ｂ，６ｂが筒状部１
ｂ，２ｂに挾持された状態でスポット溶接が行なわれる
ので、溶接時に位置ずれを生じたりすることがなく正確
かつ確実に接続が行なわれる。また、筒状部１ｂ，２ｂ
の間で溶接すると、溶接部が筒状部１ｂ，２ｂにより時
計機械体内の空間に対して遮断されているので、溶接時
において発生する溶接ガスが、構成要素群等の位置へ侵
入することがない。したがって、品質の安定化に寄与す
るとともに、組み立て後の防塵性にも優れている。As described above, the connecting portions 4b and 6b have the tubular portion 1
Spot welding is performed while being held between b and 2b.
Since it does not cause misalignment during welding, it is accurate
And the connection is surely made. Also, the tubular portions 1b and 2b
When welding is performed between the two, since the welded portion is blocked from the space inside the timepiece machine body by the tubular portions 1b and 2b, during welding.
The welding gas generated in 1 does not enter the position of the component group or the like. Therefore, contributes to the stabilization of quality, is superior in dust resistance after assembly.

【００１５】[0015]

【発明の効果】本発明によれば、溶接すべき２つの接続
部は、筒状部の先端面によって重なった状態を保持され
るので、時計機械体の最終組み立て工程で両接続部は位
置ずれを生じることなくスポット溶接することが可能
で、そのため組み立ての自動化が容易になる。また、両
接続部は筒状部で挟持されてスポット溶接個所が実質的
に囲まれているため、溶接時に他の部品に影響を及ぼす
ことがなく、時計機械体の品質の安定化と防塵性に優れ
たものとなる。 According to the invention, two connections to be welded
Parts are held in an overlapping state by the tip surface of the tubular part.
Therefore, both connection parts should be positioned in the final assembly process of the watch mechanical body.
Spot welding is possible without misalignment
In, therefore automation of the assembly is facilitated. Moreover, since both connections which are sandwiched between the cylindrical portion is spot welds are substantially enclosed, without affecting other parts during welding, stable quality watch machine body and dust resistance Excellent
It becomes a thing.

[Brief description of drawings]

【図１】本発明の時計機械体の一部切欠平面図FIG. 1 is a partially cutaway plan view of a timepiece mechanical body of the invention.

【図２】図１Ａ−Ａ線拡大断面図FIG. 2 is an enlarged sectional view taken along the line AA in FIG.

【図３】回路ユニットの拡大正面図FIG. 3 is an enlarged front view of a circuit unit.

[Explanation of symbols]

１上ケース１ｂ中空の筒状部２下ケース２ｂ中空の筒状部３時計輪列４……回路ユニットを構成するリードフレーム４ｂ……接続部６……電池接片６ｂ……接続部 1 Upper Case 1b Hollow Cylindrical Part 2 Lower Case 2b Hollow Cylindrical Part 3 Clock Wheel Train 4 ... Lead Frame 4b Forming Circuit Unit ... Connection Part 6 ... Battery Contact 6b ... Connection Part

Claims

(57) [Claims]

1. A component group including a battery contact piece, a lead frame type circuit unit, a clock train, and the like is arranged between the lower case and the upper case, and the lower case and the upper case.
By connecting with the case, the above component group is separated
The timepiece machine body that will be incapable of supporting a connecting portion of the battery contact piece and connecting portion of the lead frame
But make sure that the lower case and the upper case are in contact with each other.
Overlaps the, in the lower case and the upper case, the both connecting portions are paired
Each hollow cylindrical part protruding toward the contacting position
The two tubular parts are formed in a body, and the both connecting parts are spotted from the hollow part.
When welding, the two end faces of the tubular parts will
It is characterized in that the connecting part is formed to a length that allows it to be held.
Watch mechanical body.