JPH08273628A - Filament coil for bulb and incandescent electric bulb employing thereof and manufacture of filament coil - Google Patents
Filament coil for bulb and incandescent electric bulb employing thereof and manufacture of filament coilInfo
- Publication number
- JPH08273628A JPH08273628A JP7075439A JP7543995A JPH08273628A JP H08273628 A JPH08273628 A JP H08273628A JP 7075439 A JP7075439 A JP 7075439A JP 7543995 A JP7543995 A JP 7543995A JP H08273628 A JPH08273628 A JP H08273628A
- Authority
- JP
- Japan
- Prior art keywords
- filament coil
- coil
- metal foil
- parts
- filament
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 49
- 239000011888 foil Substances 0.000 claims abstract description 37
- 238000005452 bending Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 5
- 239000011733 molybdenum Substances 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000009751 slip forming Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000002788 crimping Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Wire Processing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、管球用フイラメントコ
イルならびにこれを用いた白熱電球および管球用フイラ
メントコイルの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filament coil for a tube, an incandescent lamp using the same, and a method for manufacturing a filament coil for a tube.
【０００２】[0002]
【従来の技術】従来からハロゲン電球等の白熱電球の管
球用フイラメントコイルとして、図６（Ａ），（Ｂ）に
示すような構成を有するものが知られている。すなわ
ち、このフイラメントコイル１は、コイル部１ａと、そ
の両端から延びて形成された両足部１ｂと、両足部１ｂ
に接続された金属スリーブ２とからなる。金属スリーブ
２は、電球製造時にフイラメントコイル１の両足部１ｂ
を保護してモリブデン等からなる導入線（図示せず）に
確実に溶接により接続するためのものである。足部１ｂ
への金属スリーブ２の固着は、フイラメントコイル１の
足部１ｂの先端部に、この足部の外径寸法よりやや大き
い内径寸法を有する金属スリーブ２を挿入した後、かし
め治具（図示せず）により金属スリーブ２をかしめて足
部１ｂに金属スリーブ２を固定し、さらに足部１ｂと金
属スリーブ２とを溶接することにより行っている。2. Description of the Related Art Conventionally, as a filament coil coil for incandescent lamps such as halogen lamps, one having a structure shown in FIGS. 6A and 6B is known. That is, the filament coil 1 includes a coil portion 1a, both foot portions 1b extending from both ends thereof, and both foot portions 1b.
And a metal sleeve 2 connected to the. The metal sleeve 2 is provided on both legs 1b of the filament coil 1 when manufacturing a light bulb.
To securely connect to an introduction wire (not shown) made of molybdenum or the like by welding. Foot 1b
The metal sleeve 2 is fixed to the foot 1b of the filament coil 1 by inserting the metal sleeve 2 having an inner diameter slightly larger than the outer diameter of the foot into a caulking jig (not shown). ), The metal sleeve 2 is caulked to fix the metal sleeve 2 to the foot portion 1b, and the foot portion 1b and the metal sleeve 2 are welded together.
【０００３】[0003]
【発明が解決しようとする課題】ところで、このような
フイラメントコイルは、図７（Ａ）に示すように、フイ
ラメントコイル１の足部１ｂが金属スリーブ２を介して
導入線３に接続される必要がある。この接続状態でのフ
イラメントコイル１を図８（Ａ）に示す。By the way, in such a filament coil, as shown in FIG. 7A, the foot portion 1b of the filament coil 1 needs to be connected to the lead-in wire 3 via the metal sleeve 2. There is. The filament coil 1 in this connected state is shown in FIG.
【０００４】しかしながら、このような従来の方法で
は、足部１ｂの外周面の位置に対して金属スリーブ２の
つなぎ目２ａの箇所が大きくばらつくために、このつな
ぎ目２ａが図７（Ｂ）に示すような位置に来ることがあ
り、この場合、金属スリーブ２と導入線３とを溶接電極
４で溶接した時、フイラメントコイル１にひねりが生
じ、図８（Ｂ）に示すようにコイル部１ａが変形し、こ
のようなフイラメントコイルを用いた白熱電球では所望
する配光特性が得られないという不具合があった。ま
た、溶接時、金属スリーブ２のつなぎ目２ａが大きく開
いてしまうこともあり、この場合は、フイラメントコイ
ル１が導入線３に直接溶接されてしまい、点灯中等にフ
イラメントコイル１の足部１ｂが断線するという不具合
があった。However, according to such a conventional method, since the position of the joint 2a of the metal sleeve 2 greatly varies with respect to the position of the outer peripheral surface of the foot portion 1b, the joint 2a is as shown in FIG. 7 (B). In this case, when the metal sleeve 2 and the lead-in wire 3 are welded by the welding electrode 4, the filament coil 1 is twisted and the coil portion 1a is deformed as shown in FIG. 8 (B). However, the incandescent light bulb using such filament coil has a problem that desired light distribution characteristics cannot be obtained. In addition, at the time of welding, the joint 2a of the metal sleeve 2 may be wide open. In this case, the filament coil 1 is directly welded to the lead-in wire 3, and the foot portion 1b of the filament coil 1 is disconnected during lighting. There was a problem of doing.
【０００５】本発明は、このような従来の問題点を解決
するためになされたもので、電球製造時、フイラメント
コイルに変形が生じず、したがって所望する配光特性が
得られ、またフイラメントコイルの足部と導入線との接
続不良に基づく同足部の断線を防止した管球用フイラメ
ントコイルならびにこれを用いた白熱電球および管球用
フイラメントコイルの製造方法を提供するものである。The present invention has been made in order to solve the above-mentioned conventional problems, and the filament coil is not deformed at the time of manufacturing a light bulb, so that a desired light distribution characteristic is obtained and the filament coil (EN) Provided are a filament coil for a tube which prevents disconnection of the foot due to a poor connection between the foot and a lead wire, and an incandescent light bulb using the same and a method for manufacturing a filament coil for a tube.
【０００６】[0006]
【課題を解決するための手段】本発明の管球用フイラメ
ントコイルは、コイル部と、このコイル部の両端から延
びて形成された両足部と、それぞれの足部に円筒状に巻
きつけられて接続され、かつ長さ方向の両端部が絞り成
形された円筒状部、およびこの円筒状部の絞り成形部分
に連設し、かつこの円筒状部より外側へ突出した突出部
の内面同士が突合された突合せ部からなる金属箔とを備
えたものである。The filament filament coil of the present invention includes a coil portion, both foot portions extending from both ends of the coil portion, and a cylindrical winding around each foot portion. The inner surface of the cylindrical part that is connected and has both ends in the lengthwise direction formed by drawing, and the inner surfaces of the projecting parts that are continuous with the drawing part of this cylindrical part and that project outward from this cylindrical part And a metal foil formed of the abutted portion.
【０００７】また、本発明の白熱電球は、バルブ内に設
けた導入線に、請求項１記載の管球用フイラメントコイ
ルの両足部を金属箔を介して接続したものである。Further, the incandescent lamp of the present invention is one in which both legs of the filament coil for a tube according to claim 1 are connected to the lead-in wire provided in the bulb through the metal foil.
【０００８】さらに、本発明の管球用フイラメントコイ
ルの製造方法は、金属箔の先端部を折曲げて折曲部分を
形成し、前記折曲部分の間にフイラメントコイルの足部
を挿入し、前記折曲部分を上下一対のかしめ治具でかし
めることにより、前記足部に円筒状に巻きつけられて接
続され、かつ長さ方向の両端部が絞り成形された円筒状
部を前記金属箔に形成し、前記金属箔を切断することに
より、前記円筒状部の絞り成形部分に連設し、かつこの
円筒状部より外側へ突出した突出部の内面同士が突合さ
れた突合せ部を形成してフイラメントコイルを得るもの
である。Further, in the method for manufacturing a filament coil for a tube according to the present invention, the tip portion of the metal foil is bent to form a bent portion, and the foot portion of the filament coil is inserted between the bent portions, By crimping the bent portion with a pair of upper and lower crimping jigs, the bent portion is connected to be wound around the leg in a cylindrical shape, and both end portions in the length direction are drawn and formed into a cylindrical portion. And cutting the metal foil to form a butt portion that is continuous with the draw-formed portion of the cylindrical portion and the inner surfaces of the protruding portions that project outward from the cylindrical portion are abutted with each other. To obtain a filament coil.
【０００９】[0009]
【作用】かかる構成により、フイラメントコイルの足部
の外周面の位置に対して、金属箔の突合せ部の位置のば
らつきを小さくすることができ、電球製造時、導入線と
金属箔とを接続する際に、フイラメントコイルのコイル
部にひねりが加わるのを防止することができる。With this configuration, it is possible to reduce the variation in the position of the metal foil butt portion with respect to the position of the outer peripheral surface of the foot portion of the filament coil, and to connect the lead-in wire and the metal foil when manufacturing the light bulb. At this time, it is possible to prevent a twist from being applied to the coil portion of the filament coil.
【００１０】[0010]
【実施例】以下、本発明の一実施例について図面を用い
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１１】図１（Ａ）は本発明の一実施例である管球
用フイラメントコイルの斜視図、同（Ｂ）は同要部拡大
斜視図である。FIG. 1A is a perspective view of a filament coil coil for a tube according to an embodiment of the present invention, and FIG. 1B is an enlarged perspective view of the same main portion.
【００１２】図１（Ａ），（Ｂ）に示すように、本発明
実施例の自動車ヘツドライト用フイラメントコイル５
は、タングステンからなるコイル部５ａと、このコイル
部の両端から延びて形成されたタングステンからなる両
足部５ｂと、それぞれの足部に円筒状に巻きつけられて
接続され、かつ長さ方向の両端部が絞り成形された円筒
状部６ａ、およびこの円筒状部の絞り成形部分に連設
し、かつこの円筒状部より外側へ突出した突出部の内面
同士が突合された突合せ部６ｂからなるモリブデン製の
金属箔６とを備えている。As shown in FIGS. 1A and 1B, a filament coil 5 for an automobile headlight according to an embodiment of the present invention.
Is a coil portion 5a made of tungsten, both foot portions 5b made of tungsten extending from both ends of the coil portion, and connected to each foot portion by being wound in a cylindrical shape and having both ends in the longitudinal direction. A molybdenum portion 6a whose part is formed by drawing, and a butt portion 6b in which inner surfaces of projecting parts which are continuous with the drawing part of the cylindrical part and which project outward from the cylindrical part are butted against each other. And a metal foil 6 made of metal.
【００１３】図２は同フイラメントコイルを用いた自動
車ヘツドライト用ハロゲン電球の正面図である。FIG. 2 is a front view of a halogen light bulb for an automobile headlight using the filament coil.
【００１４】図２において、石英製のガラスバルブ７内
には、その中心軸に平行に２つのフイラメントコイル
５，８が設けられている。フイラメントコイル５の両端
部は導入線９，１２に接続されている。フイラメントコ
イル８には対向車側に光が当たらないようにするため
に、導入線９に接続されたモリブデン製の反射鏡１０が
取り付けられている。また、フイラメントコイル８の一
端部は導入線１１に接続され、同他端部は反射鏡１０に
接続されている。導入線９，１１，１２はモリブデンか
らなり、ステムガラス１３で一体化されている。ガラス
バルブ７の頂部外面には遮光膜１４が形成されており、
またガラスバルブ７の一端部には口金１５が固着されて
いる。In FIG. 2, two filament coils 5 and 8 are provided in a glass bulb 7 made of quartz in parallel with the central axis thereof. Both ends of the filament coil 5 are connected to the lead wires 9 and 12. A reflection mirror 10 made of molybdenum, which is connected to the lead-in wire 9, is attached to the filament coil 8 in order to prevent light from hitting the oncoming vehicle side. Further, one end of the filament coil 8 is connected to the lead-in wire 11, and the other end thereof is connected to the reflecting mirror 10. The lead-in wires 9, 11 and 12 are made of molybdenum and are integrated by a stem glass 13. A light shielding film 14 is formed on the outer surface of the top of the glass bulb 7,
A base 15 is fixed to one end of the glass bulb 7.
【００１５】次に、かかる自動車ヘツドライト用フイラ
メントコイルの製造方法について、図３〜図５を用いて
説明する。Next, a method of manufacturing such a filament coil for an automobile headlight will be described with reference to FIGS.
【００１６】図３および図４はかかる自動車ヘツドライ
ト用フイラメントコイルの製造方法を実施するための装
置の一例を示す要部斜視図および同要部拡大正面図であ
る。FIG. 3 and FIG. 4 are a perspective view and an enlarged front view of an essential part showing an example of an apparatus for carrying out the method for manufacturing the filament coil for an automobile headlight.
【００１７】図３において、この装置は、金属箔６の固
定用治具１６、先端部に斜面を有する金属箔用折曲げ治
具１７および金属箔用折曲げ成形治具１８からなり、折
曲げ成形治具１８は断面が半円形で回転可能になってい
る。上下一対のかしめ治具１９，２０は図４に示すよう
に、それぞれ下面および上面にＶ字形の溝１９ａ，２０
ａが形成されている。上側かしめ治具１９の溝１９ａ内
には、１つまたは２つの突起１９ｂが設けられている。
上側かしめ治具１９は、フイラメントコイル５の足部５
ｂに金属箔６を絞り成形して接続するためのものであ
り、上下可動になっている。下側かしめ治具２０は基台
（図示せず）上に固定されており、金属箔６の先端部の
折曲部分６ｃとフイラメントコイル５の足部５ｂとを成
形する位置にある。フイラメントコイル５は、ターンテ
ーブル２１に固定された治具２２のＶ字形溝に挿入さ
れ、その側面から押え治具２３により押圧固定されてい
る。In FIG. 3, this apparatus comprises a jig 16 for fixing the metal foil 6, a bending jig 17 for a metal foil having a slope at its tip and a bending and forming jig 18 for a metal foil. The molding jig 18 has a semicircular cross section and is rotatable. As shown in FIG. 4, the pair of upper and lower caulking jigs 19 and 20 have V-shaped grooves 19a and 20 on the lower surface and the upper surface, respectively.
a is formed. One or two protrusions 19b are provided in the groove 19a of the upper crimping jig 19.
The upper side caulking jig 19 is the foot portion 5 of the filament coil 5.
It is for forming a metal foil 6 on b by drawing and connecting it, and is movable up and down. The lower caulking jig 20 is fixed on a base (not shown), and is located at a position where the bent portion 6c at the tip of the metal foil 6 and the foot 5b of the filament coil 5 are formed. The filament coil 5 is inserted into the V-shaped groove of the jig 22 fixed to the turntable 21, and is pressed and fixed by the holding jig 23 from the side surface thereof.
【００１８】いま、プーリー２３を介して前進移動した
金属箔６の先端部は、図５（Ａ）〜（Ｃ）に示すよう
に、折曲げ治具１７，１８によりＶ字形に折曲げられて
折曲部分６ｃが形成され、その後さらに前進移動して下
側かしめ治具２０の上に位置決めされる。そして、ター
ンテーブル２１が回転し、治具２２の溝に固定されたフ
イラメントコイル５の一方の足部５ｂが金属箔６の先端
部に形成された折曲部分６ｃの間に挿入されて位置規制
される。しかる後、上側かしめ治具１９とカッターナイ
フ２４が下側かしめ治具２０に押し当てられると同時に
金属箔６を切断する（図４参照）。金属箔６はかしめ治
具１９，２０のＶ字形溝１９ａ，２０ａにより、チュー
ブ形状に絞り成形されて円筒状部が形成される。カッタ
ーナイフ２４はばね（図示せず）で附勢されており、金
属箔６の先端部を成形する場合、上側かしめ治具１９が
先に金属箔６に当たり、円筒状部形成後カッターナイフ
２４より金属箔６が切断されて、円筒状部の絞り成形部
分に連設し、かつこの円筒状部より外側へ突出した突出
部の内面同士が突合された突合せ部が形成される。Now, as shown in FIGS. 5A to 5C, the tip of the metal foil 6 which has moved forward through the pulley 23 is bent into a V shape by the bending jigs 17 and 18. The bent portion 6c is formed, and then further moved forward and positioned on the lower caulking jig 20. Then, the turntable 21 rotates, and one foot portion 5b of the filament coil 5 fixed in the groove of the jig 22 is inserted between the bent portions 6c formed at the tip of the metal foil 6 to regulate the position. To be done. Thereafter, the upper crimping jig 19 and the cutter knife 24 are pressed against the lower crimping jig 20 and, at the same time, the metal foil 6 is cut (see FIG. 4). The metal foil 6 is drawn into a tube shape by the V-shaped grooves 19a and 20a of the caulking jigs 19 and 20 to form a cylindrical portion. The cutter knife 24 is biased by a spring (not shown), and when forming the tip of the metal foil 6, the upper caulking jig 19 contacts the metal foil 6 first, and the cutter knife 24 after forming the cylindrical portion. The metal foil 6 is cut to form a butt portion that is continuous with the draw-formed portion of the cylindrical portion, and the inner surfaces of the protruding portions protruding outward from the cylindrical portion are abutted with each other.
【００１９】なお、フイラメントコイル５の他方の足部
５ｂには、下側かしめ治具２０の位置に来る前に、別の
上下一対のかしめ治具（図示せず）にてフイラメントコ
イル５の一方の足部５ｂと同様にして金属箔６のスリー
ブが固着されている。すなわち、フイラメントコイル５
は別の上下一対のかしめ治具にて他方の足部５ｂに金属
箔６のスリーブが固着された後、図示されていない反転
機構により、反転されてから下側かしめ治具２０の位置
に来ることになる。かくして、両足部５ｂに金属箔６の
スリーブが固着された図１に示すようなフイラメントコ
イル５が得られることとなる。Before reaching the position of the lower caulking jig 20, another pair of upper and lower caulking jigs (not shown) are attached to one side of the filament coil 5 on the other foot portion 5b of the filament coil 5. The sleeve of the metal foil 6 is fixed similarly to the foot portion 5b. That is, the filament coil 5
After the sleeve of the metal foil 6 is fixed to the other foot portion 5b by another pair of upper and lower caulking jigs, it is reversed by an unillustrated reversing mechanism and then comes to the position of the lower caulking jig 20. It will be. Thus, the filament coil 5 as shown in FIG. 1 in which the sleeves of the metal foil 6 are fixed to both the foot portions 5b is obtained.
【００２０】金属箔６は図示されていない機構により折
曲げ治具１７の位置まで後退移動し、上記と同様に再度
折曲げられ、以降上記と同様の工程が繰り返される。The metal foil 6 is moved back to the position of the bending jig 17 by a mechanism (not shown), is bent again in the same manner as above, and the same steps as above are repeated thereafter.
【００２１】[0021]
【発明の効果】以上説明したように、本発明によれば、
フイラメントコイルの足部に巻きつけられた金属箔は、
従来に比して、足部の外周面から金属箔のつなぎ目、す
なわち突合せ部までの隙間が小さく、しかもフイラメン
トコイルのコイル部に対する金属箔の突合せ部の位置が
常に一定し安定化する。したがって、電球製造時におけ
るフイラメントコイルの足部への金属箔の接続が安定
し、コイル部が変形しにくくなるために、本発明のフイ
ラメントコイルを有する白熱電球は、所望する配光特性
が得られるとともに、点灯中等にフイラメントコイルの
足部が断線するようなおそれもない。As described above, according to the present invention,
The metal foil wrapped around the foot of the filament coil is
Compared with the conventional case, the gap from the outer peripheral surface of the foot portion to the joint of the metal foil, that is, the abutting portion is smaller, and the position of the abutting portion of the metal foil with respect to the coil portion of the filament coil is always constant and stabilized. Therefore, the connection of the metal foil to the foot portion of the filament coil during the production of the light bulb is stable, and the coil portion is less likely to be deformed, so that the incandescent light bulb having the filament coil of the present invention can obtain desired light distribution characteristics. At the same time, there is no fear that the foot of the filament coil will be disconnected during lighting.
【図１】（Ａ）本発明の一実施例である管球用フイラメ
ントコイルの斜視図 （Ｂ）同じく要部拡大斜視図FIG. 1A is a perspective view of a filament coil coil for a tube according to an embodiment of the present invention. FIG.
【図２】本発明の管球用フイラメントコイルを用いた白
熱電球の正面図FIG. 2 is a front view of an incandescent light bulb using the filament filament coil of the present invention.
【図３】本発明の管球用フイラメントコイルの製造方法
を実施するための装置の一例を示す要部斜視図FIG. 3 is a perspective view of essential parts showing an example of an apparatus for carrying out the method for manufacturing a filament coil for a tube according to the present invention.
【図４】同じく要部拡大正面図[Fig. 4] Similarly, an enlarged front view of the main part
【図５】（Ａ）本発明の管球用フイラメントコイルの製
造方法において金属箔の先端部に折曲部分を形成する工
程図 （Ｂ）同じく工程図 （Ｃ）同じく工程図FIG. 5 (A) is a process diagram of forming a bent portion at the tip of a metal foil in the method for manufacturing a filament coil for a tube of the present invention (B) the same process diagram (C) the same process diagram
【図６】（Ａ）従来の管球用フイラメントコイルの斜視
図 （Ｂ）同じく部分拡大斜視図FIG. 6A is a perspective view of a conventional filament coil coil for a tube. FIG. 6B is a partially enlarged perspective view of the same.
【図７】（Ａ）従来の管球用フイラメントコイルと導入
線との正常な接続状態を示す図 （Ｂ）従来の管球用フイラメントコイルと導入線との異
常な接続状態を示す図FIG. 7A is a diagram showing a normal connection state between a conventional filament coil for a tube and a lead-in wire. FIG. 7B is a diagram showing an abnormal connection state between a conventional filament coil for a tube and a lead-in wire.
【図８】（Ａ）図７（Ａ）の場合の管球用フイラメント
コイルのコイル部の状態を示す拡大正面図 （Ｂ）図７（Ｂ）の場合の管球用フイラメントコイルの
コイル部の状態を示す拡大正面図8A is an enlarged front view showing the state of the coil portion of the filament filament coil in the case of FIG. 7A, and FIG. 8B is the coil portion of the filament coil of the tube in FIG. 7B. Enlarged front view showing the state
５，８ フイラメントコイル ５ａ フイラメントコイルのコイル部 ５ｂ フイラメントコイルの両足部 ６ 金属箔 ６ａ 金属箔の円筒状部 ６ｂ 金属箔の突合せ部 ６ｃ 金属箔の折曲部分 ９，１１，１２ 導入線 １６ 固定用治具 １７ 折曲げ治具 １８ 折曲げ成形治具 １９，２０ かしめ治具 １９ａ かしめ治具１９のＶ字形溝 ２０ａ かしめ治具２０のＶ字形溝 ２４ カッターナイフ 5,8 Filament coil 5a Coil part of filament coil 5b Both legs of filament coil 6 Metal foil 6a Cylindrical part of metal foil 6b Butt part of metal foil 6c Bent part of metal foil 9,11,12 Introductory wire 16 For fixing Jig 17 Bending jig 18 Bending forming jig 19,20 Crimping jig 19a V-shaped groove of caulking jig 20a V-shaped groove of caulking jig 20 24 Cutter knife
Claims (3)
びて形成された両足部と、それぞれの足部に円筒状に巻
きつけられて接続され、かつ長さ方向の両端部が絞り成
形された円筒状部、およびこの円筒状部の絞り成形部分
に連設し、かつこの円筒状部より外側へ突出した突出部
の内面同士が突合された突合せ部からなる金属箔とを備
えたことを特徴とする管球用フイラメントコイル。1. A coil portion, both foot portions formed extending from both ends of the coil portion, and each foot portion are wound and connected in a cylindrical shape, and both end portions in a length direction are formed by drawing. A cylindrical portion, and a metal foil comprising a butt portion that is provided continuously to the drawing-formed portion of the cylindrical portion and that is butt-joined to each other on the inner surfaces of the protruding portions that project outward from the cylindrical portion. Characteristic filament coil for tubes.
載の管球用フイラメントコイルの両足部を金属箔を介し
て接続したことを特徴とする白熱電球。2. An incandescent light bulb characterized in that both legs of the filament coil coil according to claim 1 are connected to a lead-in wire provided in the bulb through a metal foil.
成し、前記折曲部分の間にフイラメントコイルの足部を
挿入し、前記折曲部分を上下一対のかしめ治具でかしめ
ることにより、前記足部に円筒状に巻きつけられて接続
され、かつ長さ方向の両端部が絞り成形された円筒状部
を前記金属箔に形成し、前記金属箔を切断することによ
り、前記円筒状部の絞り成形部分に連設し、かつこの円
筒状部より外側へ突出した突出部の内面同士が突合され
た突合せ部を形成してフイラメントコイルを得ることを
特徴とする管球用フイラメントコイルの製造方法。3. A bent portion is formed by bending a front end portion of a metal foil, a foot portion of a filament coil is inserted between the bent portions, and the bent portion is formed by a pair of upper and lower caulking jigs. By squeezing, the foot is cylindrically wound and connected, and both ends in the lengthwise direction are formed into a cylindrical portion by drawing, and by cutting the metal foil, A filament coil is obtained by forming a butt portion that is provided continuously to the draw-formed portion of the cylindrical portion and that is formed by abutting the inner surfaces of the protruding portions protruding outward from the cylindrical portion. Manufacturing method of filament coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07543995A JP3303591B2 (en) | 1995-03-31 | 1995-03-31 | Filament coil for tube, incandescent lamp using the same, and method of manufacturing filament coil for tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07543995A JP3303591B2 (en) | 1995-03-31 | 1995-03-31 | Filament coil for tube, incandescent lamp using the same, and method of manufacturing filament coil for tube |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001268486A Division JP3473597B2 (en) | 2001-09-05 | 2001-09-05 | Filament coil for tube and incandescent lamp using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08273628A true JPH08273628A (en) | 1996-10-18 |
| JP3303591B2 JP3303591B2 (en) | 2002-07-22 |
Family
ID=13576277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07543995A Expired - Fee Related JP3303591B2 (en) | 1995-03-31 | 1995-03-31 | Filament coil for tube, incandescent lamp using the same, and method of manufacturing filament coil for tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3303591B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101411652B1 (en) * | 2012-07-27 | 2014-06-27 | (주)선광텅스텐 | Sleeving device and sleeving method for filament |
-
1995
- 1995-03-31 JP JP07543995A patent/JP3303591B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101411652B1 (en) * | 2012-07-27 | 2014-06-27 | (주)선광텅스텐 | Sleeving device and sleeving method for filament |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3303591B2 (en) | 2002-07-22 |
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