JP2010282771A - Connection means and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection means capable of securing a necessary size of distance between a side for connecting a drive-pulling cord of a pull switch and a side for connecting an operation-pulling cord of the pull switch and capable of being readily manufactured. <P>SOLUTION: A connection ring 12 (connection means) made of a metal wire rod is provided with a connection part 12b for hooking the operation-pulling cord through a gap 12f. For forming the connection part 12b, one end part 12g side of the metal wire rod is bent in a substantially ring shape in a plan view so as to be able to hook the operation-pulling cord and bent so as to allow a gap 12f, in a side view, between the one end part 12g of the metal wire rod and the intermediate part 12e of the metal wire rod through which the operation-pulling cord may pass. After the operation-pulling cord is passed through the gap 12f, the connection part 12b is caulking-precessed in a direction of the gap 12f being narrowed (in a nearly rear face direction). After processing, the gap 12f is closed. The diameter D2 of the connection part 12b do not change, before and after the processing. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、連結具及び照明器具に関するものである。本発明は、特に、プルスイッチの接続環に関するものである。   The present invention relates to a connector and a lighting fixture. The present invention particularly relates to a connection ring of a pull switch.

従来、照明器具のプルスイッチ本体の導出孔から外部に導出した駆動引き紐と、プルスイッチの操作引き紐とを接続する接続環として、略Ｓ字状に形成されたものがある（例えば、特許文献１参照）。この接続環では、駆動引き紐を連結するための上部連結部と操作引き紐を連結するための下部連結部との直径に差をつけることで、直径の大きい下部連結部が、直径の小さい上部連結部より、先に広がる構造を採用している。また、それぞれの連結部に隙間が形成されており、駆動引き紐及び操作引き紐を隙間から通した後、カシメ加工で隙間を閉じて、駆動引き紐と操作引き紐とを接続する構造を採用している。   2. Description of the Related Art Conventionally, there is an S-shaped connection ring that connects a drive pull string led out from a lead hole of a pull switch body of a lighting fixture and an operation pull string of a pull switch (for example, a patent) Reference 1). In this connection ring, by making a difference in diameter between the upper connecting part for connecting the driving pull string and the lower connecting part for connecting the operation pulling string, the lower connecting part having a larger diameter is changed to the upper part having a smaller diameter. A structure that spreads ahead of the connecting part is adopted. In addition, a gap is formed in each connecting part, and after passing the drive pull string and the operation pull string through the gap, the gap is closed by caulking and the drive pull string and the operation pull string are connected. is doing.

また、従来、他の接続環として、略８字状に形成されたものがある（例えば、特許文献２参照）。この接続環では、操作引き紐を連結するための下部連結部が、駆動引き紐を連結するための上部連結部の両側にそれぞれ連続する第１連結部と第２連結部とからなり、第１連結部と第２連結部は端部にそれぞれ駆動引き紐及び操作引き紐を通過可能な隙間を確保し、第１連結部と第２連結部とを重層状態に形成する構造を採用している。   Conventionally, there is another connection ring formed in an approximately 8-character shape (see, for example, Patent Document 2). In this connection ring, the lower connecting part for connecting the operation pulling string is composed of a first connecting part and a second connecting part which are respectively continuous on both sides of the upper connecting part for connecting the driving pulling string. The connecting portion and the second connecting portion have a structure in which a clearance through which the driving pulling cord and the operation pulling cord can pass can be secured at the end portions, and the first connecting portion and the second connecting portion are formed in a multilayered state. .

実開昭５０−１４５７５号公報Japanese Utility Model Publication No. 50-14575 特開２００７−２８０７３６号公報JP 2007-280736 A

従来の略Ｓ字状の接続環では、操作引き紐に強い引張荷重が加わった場合、操作引き紐側（即ち、下部連結部）が開き出すとともに、プルスイッチ側（即ち、上部連結部）も開き出して隙間が生じる。そのため、引き紐が外れた際、衝撃により、その隙間から接続環が外れ、落下するおそれがあるという課題があった。また、カシメ加工で隙間を閉じると、それぞれの連結部の直径が小さくなるが、カシメ加工が手作業で行われた場合、直径にばらつきが生じるため、上部連結部と下部連結部との直径の差が十分に確保できないおそれがあるという課題があった。   In a conventional substantially S-shaped connection ring, when a strong tensile load is applied to the operation pull string, the operation pull string side (that is, the lower connecting portion) is opened and the pull switch side (that is, the upper connecting portion) is also opened. A gap is created by opening. Therefore, when the drawstring is removed, there is a problem that the connection ring may be removed from the gap due to an impact and may fall. In addition, when the gap is closed by caulking, the diameter of each connecting portion is reduced, but when caulking is performed manually, the diameter varies, so the diameter of the upper connecting portion and the lower connecting portion is There was a problem that the difference could not be sufficiently secured.

また、従来の略８字状の接続環では、接続環の形状を８字状に曲げる加工が容易ではなく、しかも第１連結部と第２連結部とを重層状態に形成しているため、線材の全長が長くなることから、コストが高くなるのが避けられないという課題があった。   Moreover, in the conventional approximately 8-shaped connection ring, the process of bending the shape of the connection ring into an 8-character shape is not easy, and the first connecting portion and the second connecting portion are formed in a multi-layered state, Since the total length of the wire becomes long, there is a problem that the cost is inevitable.

本発明は、例えば、プルスイッチの駆動引き紐を連結する側とプルスイッチの操作引き紐を連結する側との間に必要な大きさの差を確保しつつ、容易に加工できる連結具を提供することを目的とする。   The present invention provides, for example, a connector that can be easily processed while ensuring the necessary size difference between the side that connects the pulling cord of the pull switch and the side that connects the pulling cord of the pull switch. The purpose is to do.

本発明の一の態様に係る連結具は、
照明器具のプルスイッチに取り付けられる第１紐と前記プルスイッチの操作のために引っ張られる第２紐とからなる引き紐の第１紐と第２紐とを連結する連結具であり、弾性を有する線材からなる連結具であって、
前記線材の一端部側を、前記第２紐が引っ掛けられるように正面視で略環形に折り曲げるとともに、側面視で前記線材の一端部と前記線材の中間部との間に前記第２紐が通る隙間があくように折り曲げて形成された、前記第２紐を前記隙間から通して引っ掛けるための引掛部を備え、
前記引掛部は、前記線材の一端部を含む一部に正面方向から一定の力を加えることにより前記隙間が縮小又は閉塞するように塑性変形可能であることを特徴とする。 The connector according to one aspect of the present invention is
It is a connecting tool for connecting the first string and the second string of the pull string composed of the first string attached to the pull switch of the lighting fixture and the second string pulled for the operation of the pull switch, and has elasticity. A connector made of wire,
The one end side of the wire is bent into a substantially ring shape when viewed from the front so that the second string is hooked, and the second string passes between the one end of the wire and the intermediate portion of the wire when viewed from the side. A hook part for hooking the second string through the gap formed by bending so as to leave a gap;
The hook portion may be plastically deformed so that the gap is reduced or closed by applying a constant force from a front direction to a part including one end portion of the wire.

本発明の一の態様によれば、照明器具のプルスイッチに取り付けられる第１紐と前記プルスイッチの操作のために引っ張られる第２紐とからなる引き紐の第１紐と第２紐とを連結する連結具において、弾性を有する線材の一端部側を、前記第２紐が引っ掛けられるように正面視で略環形に折り曲げるとともに、側面視で前記線材の一端部と前記線材の中間部との間に前記第２紐が通る隙間があくように折り曲げて形成された引掛部が、前記線材の一端部を含む一部に正面方向から一定の力を加えることにより前記隙間が縮小又は閉塞するように塑性変形可能であるため、第１紐を連結する側と第２紐を連結する側との間に必要な大きさの差を確保しつつ、容易に加工できる連結具を提供することが可能となる。   According to one aspect of the present invention, the first string and the second string of the pull string composed of the first string attached to the pull switch of the lighting fixture and the second string pulled for the operation of the pull switch. In the coupling tool to be coupled, one end of the elastic wire is bent into a substantially ring shape in front view so that the second string is hooked, and between the one end of the wire and the intermediate portion of the wire in side view. The hook part formed by bending so that a gap through which the second string passes is applied to a part including one end of the wire so that the gap is reduced or closed by applying a certain force from the front direction. It is possible to provide a connector that can be easily processed while ensuring the necessary size difference between the side connecting the first string and the side connecting the second string. It becomes.

実施の形態１に係る照明器具を示す正面部分断面図である。2 is a front partial cross-sectional view showing the lighting apparatus according to Embodiment 1. FIG. 実施の形態１に係るプルスイッチと接続環とを示す斜視図である。It is a perspective view which shows the pull switch and connection ring which concern on Embodiment 1. FIG. 実施の形態１に係るカシメ加工前の接続環を示す正面図及び側面図である。It is the front view and side view which show the connection ring before crimping processing which concerns on Embodiment 1. FIG. 実施の形態１に係るカシメ加工後の接続環を示す正面図及び側面図である。It is the front view and side view which show the connection ring after the crimping process which concerns on Embodiment 1. FIG. 実施の形態１に係る下側の連結部が開いた状態の接続環を示す正面図である。It is a front view which shows the connection ring of the state which the lower side connection part which concerns on Embodiment 1 opened. 実施の形態１に係る接続環の下側の連結部の直径と引き紐に加わる力との関係を示す表及びグラフである。4 is a table and a graph showing a relationship between a diameter of a connecting portion on a lower side of a connection ring according to Embodiment 1 and a force applied to a drawstring. 実施の形態１の変形例に係る照明器具を示す正面部分断面図である。FIG. 6 is a front partial cross-sectional view showing a lighting fixture according to a modification of the first embodiment. 実施の形態２に係る接続環のプレス加工の様子を示す図である。FIG. 10 is a diagram showing a state of press working of a connection ring according to Embodiment 2. 実施の形態３に係る接続環を示す正面図及び側面図である。It is the front view and side view which show the connection ring which concerns on Embodiment 3.

以下、本発明の実施の形態について、図を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

実施の形態１．
図１は、本実施の形態に係る照明器具１０を示す正面部分断面図である。図２は、本実施の形態に係るプルスイッチ１１と接続環１２とを示す斜視図である。 Embodiment 1 FIG.
FIG. 1 is a partial front sectional view showing a lighting fixture 10 according to the present embodiment. FIG. 2 is a perspective view showing the pull switch 11 and the connection ring 12 according to the present embodiment.

図１において、照明器具１０は、吊り下げ型照明器具である。照明器具１０は、器具本体１３、電線１４、ランプ１５（光源）、セード１６、引き紐１７を備える。器具本体１３には、ランプ１５の点灯／消灯（ＯＮ／ＯＦＦ）又は調光を切り替えるためのプルスイッチ１１、プルスイッチ１１により制御されてランプ１５を点灯／消灯又は調光する点灯装置等が内蔵される。電線１４は、天井に設けられた引掛シーリングに取り付けられ、器具本体１３に接続される。ランプ１５は、器具本体１３に取り付けられる。セード１６は、器具本体１３の上面周枠部に取り付けられる。引き紐１７は、器具本体１３の中央部に取り付けられる。   In FIG. 1, the lighting fixture 10 is a hanging type lighting fixture. The luminaire 10 includes a luminaire main body 13, an electric wire 14, a lamp 15 (light source), a shade 16, and a drawstring 17. The fixture body 13 has a built-in pull switch 11 for switching on / off (ON / OFF) or dimming of the lamp 15, a lighting device for turning on / off or dimming the lamp 15 controlled by the pull switch 11. Is done. The electric wire 14 is attached to a hook ceiling provided on the ceiling and connected to the instrument body 13. The lamp 15 is attached to the instrument body 13. The shade 16 is attached to the upper peripheral frame portion of the instrument main body 13. The drawstring 17 is attached to the central part of the instrument body 13.

図２において、引き紐１７は、器具本体１３内に備えられるプルスイッチ１１に取り付けられる駆動引き紐１７ａと、照明器具１０の使用者がランプ１５の点灯／消灯又は調光の切り替え操作を行うために引っ張る操作引き紐１７ｂからなる。駆動引き紐１７ａ及び操作引き紐１７ｂは、繊維からなる紐に限らず、金具（チェーン等）、あるいは、その他の連結部材であってもよい。接続環１２は、弾性を有する線材からなる。本実施の形態では、接続環１２は、金属線材からなるものとするが、他の材質の線材からなるものとしてもよい。接続環１２は、２つの略円形の連結部１２ａ，１２ｂを備え、これらによって駆動引き紐１７ａと操作引き紐１７ｂとを接続する。   In FIG. 2, the drawstring 17 is a drive pullstring 17 a attached to the pull switch 11 provided in the instrument main body 13, and the user of the luminaire 10 performs an operation of switching on / off or dimming the lamp 15. It consists of an operation pull string 17b that is pulled to the right. The drive pull string 17a and the operation pull string 17b are not limited to a string made of fiber, but may be a metal fitting (chain or the like) or other connecting member. The connection ring 12 is made of an elastic wire. In the present embodiment, the connection ring 12 is made of a metal wire, but may be made of a wire made of another material. The connection ring 12 includes two substantially circular coupling portions 12a and 12b, and connects the driving pull string 17a and the operation pull string 17b.

上記のように、本実施の形態では、引き紐１７は、照明器具１０のプルスイッチ１１に取り付けられる駆動引き紐１７ａ（第１紐）とプルスイッチ１１の操作のために引っ張られる操作引き紐１７ｂ（第２紐）とからなる。接続環１２（連結具）は、駆動引き紐１７ａと操作引き紐１７ｂとを連結する。プルスイッチ１１は、引き紐１７が引っ張られることで操作される。   As described above, in the present embodiment, the pull string 17 includes the drive pull string 17 a (first string) attached to the pull switch 11 of the lighting fixture 10 and the operation pull string 17 b that is pulled for the operation of the pull switch 11. (Second string). The connection ring 12 (connector) connects the drive pull string 17a and the operation pull string 17b. The pull switch 11 is operated by pulling the pull string 17.

図３は、カシメ加工前の接続環１２を示す（ａ）正面図及び（ｂ）側面図である。図４は、カシメ加工後の接続環１２を示す（ａ）正面図及び（ｂ）側面図である。   3A is a front view and FIG. 3B is a side view showing the connection ring 12 before crimping. FIG. 4A is a front view and FIG. 4B is a side view showing the connection ring 12 after crimping.

図３及び図４において、接続環１２は金属線材を略Ｓ字状に形成したものであり、駆動引き紐１７ａ取付側（プルスイッチ１１側）の連結部１２ａと操作引き紐１７ｂ取付側の連結部１２ｂとを有する。後述するように、連結部１２ａと連結部１２ｂとの直径の比は１：１．１〜１．４となることが望ましい。   3 and 4, the connection ring 12 is formed by forming a metal wire in a substantially S shape, and is connected to the connecting portion 12a on the drive pull string 17a attachment side (pull switch 11 side) and the operation pull string 17b attachment side. Part 12b. As will be described later, the diameter ratio between the connecting portion 12a and the connecting portion 12b is preferably 1: 1.1 to 1.4.

図３（ａ）に示すように、駆動引き紐１７ａ取付側（上側）の連結部１２ａは、駆動引き紐１７ａが通る隙間１２ｃを側面方向に有する。図３（ｂ）に示すように、連結部１２ａは、その先端が少なくとも金属線材断面の直径と同じだけ正面方向に折り曲げられて形成される曲げ突起１２ｄを有する。即ち、連結部１２ａは、その先端に線径分の曲げ突起１２ｄを有する。隙間１２ｃにプルスイッチ１１から出ている駆動引き紐１７ａが通された後、連結部１２ａは、隙間１２ｃが狭まる方向（略側面方向）にカシメ加工される。図４は、図３に示した部品が加工された状態を示している。図４（ａ）及び（ｂ）に示すように、加工後は、曲げ突起１２ｄと接続環１２の中間部１２ｅとが重なり合う。そのため、駆動引き紐１７ａが通れる隙間がなくなり、駆動引き紐１７ａが抜けるのを防止できる。また、引張荷重による連結部１２ａの変形により隙間が生じるのを抑制できる。さらに、カシメ加工によって連結部１２ａの直径Ｄ０が小さくなる（直径Ｄ１となり、Ｄ０＞Ｄ１である）ため、連結部１２ａが、引張荷重に対し、より強固になる。   As shown in FIG. 3A, the connecting portion 12a on the drive pull string 17a attachment side (upper side) has a gap 12c through which the drive pull string 17a passes in the side surface direction. As shown in FIG. 3B, the connecting portion 12a has a bending protrusion 12d formed by bending the tip thereof in the front direction at least as much as the diameter of the cross section of the metal wire. That is, the connecting portion 12a has a bending projection 12d corresponding to the wire diameter at the tip. After the drive pull string 17a extending from the pull switch 11 is passed through the gap 12c, the connecting portion 12a is crimped in the direction in which the gap 12c narrows (substantially the side surface direction). FIG. 4 shows a state in which the component shown in FIG. 3 has been processed. As shown in FIGS. 4A and 4B, after processing, the bending projection 12d and the intermediate portion 12e of the connection ring 12 overlap each other. Therefore, there is no gap through which the drive pull string 17a can pass, and the drive pull string 17a can be prevented from coming off. Moreover, it can suppress that a clearance gap arises by the deformation | transformation of the connection part 12a by a tensile load. Furthermore, since the diameter D0 of the connecting portion 12a is reduced by the caulking process (the diameter becomes D1, and D0> D1), the connecting portion 12a becomes stronger against the tensile load.

図３（ａ）に示すように、操作引き紐１７ｂ取付側（下側）の連結部１２ｂの先端と接続環１２の中間部１２ｅとの間には、側面方向の隙間がないか、あったとしても、その幅は操作引き紐１７ｂの太さより狭いものとする。図３（ｂ）に示すように、連結部１２ｂは、操作引き紐１７ｂが通る隙間１２ｆを正面方向に有する。隙間１２ｆに操作引き紐１７ｂが通された後、連結部１２ｂは、隙間１２ｆが狭まる方向（略背面方向）にカシメ加工される。図４（ｂ）に示すように、加工後は、隙間１２ｆが閉じるため、操作引き紐１７ｂが外れにくくなる。連結部１２ｂでは、加工前後の直径Ｄ２が変化しない（直径Ｄ２のままとなり、Ｄ２＞Ｄ１である）ようにカシメ方向を略背面方向（正面方向と略平行）にすることで、カシメ加工が手作業で行われた場合等の引張強度のばらつきを抑制する。また、連結部１２ｂの先端と接続環１２の中間部１２ｅとの間に側面方向の隙間があったとしても、その幅が操作引き紐１７ｂの太さより狭くなるようにすることで、通常使用時に操作引き紐１７ｂが外れるのを防止できる。   As shown in FIG. 3 (a), there was a gap in the side surface direction between the distal end of the connecting portion 12b on the operation pulling string 17b attachment side (lower side) and the intermediate portion 12e of the connection ring 12. However, the width is narrower than the thickness of the operation pull string 17b. As shown in FIG.3 (b), the connection part 12b has the clearance gap 12f through which the operation pull string 17b passes in a front direction. After the operation pull string 17b is passed through the gap 12f, the connecting portion 12b is crimped in the direction in which the gap 12f narrows (substantially the back side). As shown in FIG.4 (b), since the clearance gap 12f closes after a process, the operation pull string 17b becomes difficult to remove | deviate. In the connecting portion 12b, the caulking process is performed by changing the caulking direction to the substantially back direction (substantially parallel to the front direction) so that the diameter D2 before and after the machining does not change (the diameter D2 remains unchanged and D2> D1). Suppresses the variation in tensile strength when the work is performed. Moreover, even if there is a gap in the side surface direction between the tip of the connecting portion 12b and the intermediate portion 12e of the connecting ring 12, by making the width narrower than the thickness of the operation pull string 17b, It is possible to prevent the operation pull string 17b from coming off.

上記のように、本実施の形態では、接続環１２（連結具）は、操作引き紐１７ｂを隙間１２ｆから通して引っ掛けるための連結部１２ｂ（引掛部）を備える。連結部１２ｂは、金属線材の一端部１２ｇ側を、操作引き紐１７ｂが引っ掛けられるように正面視で略環形に折り曲げるとともに、側面視で金属線材の一端部１２ｇと金属線材の中間部１２ｅとの間に操作引き紐１７ｂが通る隙間１２ｆがあくように折り曲げて形成される。連結部１２ｂは、金属線材の一端部１２ｇを含む一部に正面方向から一定の力を加えることにより隙間１２ｆが縮小又は閉塞するように塑性変形可能である。このような構成としたことで、連結部１２ｂは、たとえ手作業で加工された場合であっても、加工前後の直径Ｄ２が変化しないため、連結部１２ａと連結部１２ｂとの間に必要な大きさの差を確保することができる。ここで、連結部１２ｂの加工は、一方向へのカシメ加工であるから、容易に行うことができるものである。   As described above, in the present embodiment, the connection ring 12 (connector) includes the connection portion 12b (hook portion) for hooking the operation pull string 17b through the gap 12f. The connecting portion 12b bends the one end portion 12g side of the metal wire into a substantially ring shape when viewed from the front so that the operation pulling string 17b is hooked, and between the one end portion 12g of the metal wire and the intermediate portion 12e of the metal wire when viewed from the side. It is formed by bending so that there is a gap 12f through which the operation pulling string 17b passes. The connecting portion 12b can be plastically deformed so that the gap 12f is reduced or closed by applying a certain force from the front direction to a part including the one end portion 12g of the metal wire. With such a configuration, the connecting portion 12b is necessary between the connecting portion 12a and the connecting portion 12b because the diameter D2 before and after processing does not change even when the connecting portion 12b is processed manually. A difference in size can be secured. Here, since the process of the connection part 12b is a caulking process in one direction, it can be easily performed.

また、本実施の形態では、接続環１２は、駆動引き紐１７ａを取り付けるための連結部１２ａ（取付部）を備える。連結部１２ａは、金属線材の他端部１２ｈ側を、駆動引き紐１７ａが取り付けられるように正面視で略環形に折り曲げて形成される。このような構成としたことで、連結部１２ａは、加工後の直径Ｄ０が小さくなる（直径Ｄ１となる）ため、連結部１２ａと連結部１２ｂとの間に必要な大きさの差を確保することができる。ここで、連結部１２ａの加工は、一方向へのカシメ加工であるから、容易に行うことができるものである。   Moreover, in this Embodiment, the connection ring 12 is provided with the connection part 12a (attachment part) for attaching the drive pull string 17a. The connecting portion 12a is formed by bending the other end portion 12h side of the metal wire into a substantially ring shape when viewed from the front so that the drive pull cord 17a is attached. By adopting such a configuration, the connecting portion 12a has a reduced diameter D0 after processing (becomes the diameter D1), and thus ensures a necessary difference in size between the connecting portion 12a and the connecting portion 12b. be able to. Here, since the process of the connection part 12a is a caulking process in one direction, it can be easily performed.

また、本実施の形態では、連結部１２ｂと連結部１２ａとは、金属線材が略Ｓ字形をなすように金属線材の両端部（一端部１２ｇ及び他端部１２ｈ）側を互いに異なる方向に折り曲げて形成される。このように、金属線材を略Ｓ字形に曲げているため、加工が容易であり、しかも線材の全長が短くなるため、コストを下げることができる。   Moreover, in this Embodiment, the connection part 12b and the connection part 12a bend the both ends (one end part 12g and the other end part 12h) side of a metal wire in a mutually different direction so that a metal wire may make a substantially S shape. Formed. Thus, since the metal wire is bent into a substantially S shape, the processing is easy, and the total length of the wire is shortened, so that the cost can be reduced.

また、本実施の形態では、連結部１２ａは、金属線材の他端部１２ｈ側を正面視で直径Ｄ１（第１直径）を有する略円環形に折り曲げて形成される。連結部１２ｂは、金属線材の一端部１２ｇ側を正面視で直径Ｄ１より長い直径Ｄ２（第２直径）を有する略円環形に折り曲げて形成される。このように、連結部１２ｂの直径Ｄ２を連結部１２ａの直径Ｄ１より長くしたことで、引き紐１７に一定以上の引張荷重が加わったとき、連結部１２ｂが連結部１２ａより先に開いて、接続環１２から操作引き紐１７ｂが外れ、接続環１２は駆動引き紐１７ａと接続したままとなるため、接続環１２の落下を防止できる。   In the present embodiment, the connecting portion 12a is formed by bending the other end portion 12h side of the metal wire into a substantially annular shape having a diameter D1 (first diameter) in front view. The connecting portion 12b is formed by bending the one end portion 12g side of the metal wire into a substantially annular shape having a diameter D2 (second diameter) longer than the diameter D1 in front view. Thus, by making the diameter D2 of the connecting part 12b longer than the diameter D1 of the connecting part 12a, when a certain tensile load is applied to the drawstring 17, the connecting part 12b opens before the connecting part 12a. Since the operation pull string 17b is removed from the connection ring 12 and the connection ring 12 remains connected to the drive pull string 17a, the connection ring 12 can be prevented from dropping.

図５は、大きな引張加重がかかることにより下側の連結部１２ｂが開いた状態の接続環１２を示す正面図である。   FIG. 5 is a front view showing the connection ring 12 in a state in which the lower connecting portion 12b is opened by applying a large tensile load.

前述したように、操作引き紐１７ｂ取付側の連結部１２ｂの直径Ｄ２は、駆動引き紐１７ａ取付側の連結部１２ａの直径Ｄ１より大きい。そのため、操作引き紐１７ｂに強い引張荷重が加わった場合、図５に示すように、連結部１２ｂが大きく変形して連結部１２ｂの先端と接続環１２の中間部１２ｅとの間に側面方向の隙間があき、この隙間から操作引き紐１７ｂが外れる。また、連結部１２ａのカシメ加工前の直径Ｄ０はカシメ加工後に小さくなる（直径Ｄ１になる）ので、連結部１２ａは、カシメ加工されることで、引張荷重に対し、より強固になる。そのため、操作引き紐１７ｂが外れた際も、接続環１２は駆動引き紐１７ａと接続したままとなり、落下するおそれがない。   As described above, the diameter D2 of the connecting portion 12b on the operation pulling string 17b mounting side is larger than the diameter D1 of the connecting portion 12a on the driving pulling string 17a mounting side. Therefore, when a strong tensile load is applied to the operation pull string 17b, as shown in FIG. 5, the connecting portion 12b is greatly deformed, and a lateral direction is formed between the tip of the connecting portion 12b and the intermediate portion 12e of the connecting ring 12. There is a gap, and the operation pull string 17b is released from this gap. Moreover, since the diameter D0 before crimping of the connecting portion 12a is reduced after the crimping (becomes a diameter D1), the connecting portion 12a becomes stronger against the tensile load by being crimped. Therefore, even when the operation pull string 17b is removed, the connection ring 12 remains connected to the drive pull string 17a, and there is no possibility of dropping.

図６は、接続環１２の下側の連結部１２ｂの直径Ｄ２と引き紐１７に加わる力との関係を示す（ａ）表及び（ｂ）グラフである。   FIG. 6 is a (a) table and a (b) graph showing the relationship between the diameter D2 of the lower connecting portion 12b of the connecting ring 12 and the force applied to the drawstring 17.

図６（ａ）では、操作引き紐１７ｂ取付側の連結部１２ｂの直径Ｄ２及び金属線材の材質（具体的には、ＳＵＳ３０４Ｗ−１、ＳＵＳ３０４Ｗ−２）が違う接続環１２について、連結部１２ｂに取り付けた操作引き紐１７ｂに徐々に荷重を加え、操作引き紐１７ｂと接続環１２とが分離したときの荷重（分離加重）を記録した表を示している。なお、駆動引き紐１７ａ取付側の連結部１２ａの直径Ｄ１は５．０ｍｍ（ミリメートル）、金属線材断面の直径は１．０ｍｍとする。図６（ｂ）では、図６（ａ）の数値から得られる、連結部１２ｂの直径Ｄ２と分離加重との関係を表す近似線を示している。   In FIG. 6A, for the connection ring 12 having a different diameter D2 and a metal wire material (specifically, SUS304W-1, SUS304W-2) of the connecting portion 12b on the operation pulling string 17b attachment side, The table which recorded the load (separation weight) when a load was gradually added to the attached operation pull string 17b and the operation pull string 17b and the connection ring 12 separated was shown. The diameter D1 of the connecting portion 12a on the drive pull string 17a attachment side is 5.0 mm (millimeters), and the diameter of the cross section of the metal wire is 1.0 mm. FIG. 6B shows an approximate line representing the relationship between the diameter D2 of the connecting portion 12b and the separation weight obtained from the numerical values of FIG.

電気用品の技術上の基準を定める省令では、家庭用吊り下げ型蛍光灯器具の引き紐取付部及び引き紐について、以下の基準が定められている。
ａ．器具を通常の使用状態に取り付け、引き紐取付部に７０Ｎ（ニュートン）の引張荷重を１分間加えたとき、これに耐えること。
ｂ．ａの試験の後、引き紐の先端に５０Ｎの引張荷重を１分間加えたとき、引き紐は切断せず、かつ、１５０Ｎの引張荷重を加えたとき、引き紐は切断すること。
ｃ．ａ及びｂの試験の後、器体に異状が生じないこと。 According to the ministerial ordinance that establishes technical standards for electrical appliances, the following standards are established for the pull string attachment portion and the pull string of a household hanging fluorescent lamp fixture.
a. Withstand the device when it is attached to normal use and a tensile load of 70 N (Newton) is applied to the drawstring attachment for 1 minute.
b. After the test of a, when a tensile load of 50 N is applied to the tip of the drawstring for 1 minute, the drawstring is not cut, and when a tensile load of 150 N is applied, the drawstring is cut.
c. No abnormalities occur in the container after the tests a and b.

上記の基準に従い、通常の引き紐１７の操作によって接続環１２がオープンにならない引張荷重、即ち、分離荷重の最大値を７０Ｎ〜１００Ｎの範囲に収めることを目標とする。言い換えれば、分離荷重が７０Ｎ〜１００Ｎの範囲で設定した数値を超えると、連結部１２ｂから操作引き紐１７ｂが外れるようにすることを目標とする。   In accordance with the above-mentioned criteria, the target is to keep the tensile load at which the connection ring 12 is not opened by the operation of the normal drawstring 17, that is, the maximum value of the separation load within the range of 70N to 100N. In other words, when the separation load exceeds a numerical value set in the range of 70N to 100N, the target is to make the operation pull string 17b come off from the connecting portion 12b.

図６（ｂ）に示すように、接続環１２の材質にＳＵＳ３０４Ｗ−１を使用すると、連結部１２ｂの直径Ｄ２が約４．５ｍｍのときに分離荷重が１００Ｎとなり、連結部１２ｂの直径Ｄ２が約６．０ｍｍのときに分離荷重が７０Ｎとなる。つまり、上側の連結部１２ａと下側の連結部１２ｂとの直径の比が１：０．９となるとき、分離荷重が１００Ｎとなる。そして、上側の連結部１２ａと下側の連結部１２ｂとの直径の比が１：１．２となるとき、分離荷重が７０Ｎとなる。一方、接続環１２の材質にＳＵＳ３０４Ｗ−２を使用すると、連結部１２ｂの直径Ｄ２が約５．５ｍｍのときに分離荷重が１００Ｎとなり、連結部１２ｂの直径Ｄ２が約７．０ｍｍのときに分離荷重が７０Ｎとなる。つまり、上側の連結部１２ａと下側の連結部１２ｂとの直径の比が１：１．１となるとき、分離荷重が１００Ｎとなる。そして、上側の連結部１２ａと下側の連結部１２ｂとの直径の比が１：１．４となるとき、分離荷重が７０Ｎとなる。   As shown in FIG. 6B, when SUS304W-1 is used as the material of the connection ring 12, the separation load is 100 N when the diameter D2 of the connecting portion 12b is about 4.5 mm, and the diameter D2 of the connecting portion 12b is When it is about 6.0 mm, the separation load is 70 N. That is, when the ratio of the diameters of the upper connecting portion 12a and the lower connecting portion 12b is 1: 0.9, the separation load is 100N. When the ratio of the diameters of the upper connecting portion 12a and the lower connecting portion 12b is 1: 1.2, the separation load is 70N. On the other hand, when SUS304W-2 is used as the material of the connection ring 12, the separation load is 100 N when the diameter D2 of the connecting portion 12b is about 5.5 mm, and the separation is performed when the diameter D2 of the connecting portion 12b is about 7.0 mm. The load is 70N. That is, when the ratio of the diameters of the upper connecting portion 12a and the lower connecting portion 12b is 1: 1.1, the separation load is 100N. When the ratio of the diameters of the upper connecting portion 12a and the lower connecting portion 12b is 1: 1.4, the separation load is 70N.

前述したように、引き紐１７に一定以上の引張荷重が加わったとき、連結部１２ｂが連結部１２ａより先に開いて、接続環１２から操作引き紐１７ｂが外れ、接続環１２は駆動引き紐１７ａと接続したままとなるように、連結部１２ｂの直径Ｄ２を連結部１２ａの直径Ｄ１より長くする必要がある。したがって、接続環１２の材質としては、ＳＵＳ３０４Ｗ−１よりもＳＵＳ３０４Ｗ−２を使用することが望ましい。上側の連結部１２ａの直径Ｄ１は５．０ｍｍ前後となるケースが多いことから、上側の連結部１２ａと下側の連結部１２ｂとの直径の比は１：１．１〜１．４が最適となる。   As described above, when a tensile load of a certain level or more is applied to the pull string 17, the connecting portion 12b opens before the connecting portion 12a, the operation pull string 17b is detached from the connecting ring 12, and the connecting ring 12 is driven pull string. It is necessary to make the diameter D2 of the connecting portion 12b longer than the diameter D1 of the connecting portion 12a so as to remain connected to 17a. Therefore, it is desirable to use SUS304W-2 as a material of the connection ring 12 rather than SUS304W-1. Since there are many cases in which the diameter D1 of the upper connecting portion 12a is around 5.0 mm, the ratio of the diameters of the upper connecting portion 12a and the lower connecting portion 12b is optimally from 1: 1.1 to 1.4. It becomes.

なお、本実施の形態では、駆動引き紐１７ａ取付側の連結部１２ａは、駆動引き紐１７ａが通る隙間１２ｃを側面方向に有するものとしたが、操作引き紐１７ｂ取付側の連結部１２ｂと同様に、駆動引き紐１７ａが通る隙間１２ｃを正面方向に有していてもよい。この場合、連結部１２ａは、金属線材の他端部１２ｈ側を、駆動引き紐１７ａが取り付けられるように正面視で略環形に折り曲げるとともに、側面視で金属線材の他端部１２ｈと金属線材の中間部１２ｅとの間に駆動引き紐１７ａが通る隙間１２ｃがあくように折り曲げて形成される。連結部１２ａは、金属線材の他端部１２ｈを含む一部に正面方向から一定の力を加えることにより隙間１２ｃが縮小又は閉塞するように塑性変形可能である。このような構成としたことで、連結部１２ｂだけでなく、連結部１２ａも、たとえ手作業で加工された場合であっても、加工前後の直径が変化しない（直径Ｄ０のままとなる）ため、連結部１２ａと連結部１２ｂとの間に必要な大きさの差を確保することができる。ここで、連結部１２ａの加工は、一方向へのカシメ加工であるから、容易に行うことができるものである。   In the present embodiment, the connecting portion 12a on the drive pull string 17a attachment side has a gap 12c through which the drive pull string 17a passes in the side surface direction, but is similar to the connection portion 12b on the operation pull string 17b attachment side. In addition, a gap 12c through which the drive pull string 17a passes may be provided in the front direction. In this case, the connecting portion 12a bends the other end portion 12h side of the metal wire into a substantially ring shape when viewed from the front so that the drive pull string 17a is attached, and the other end portion 12h of the metal wire and the metal wire material when viewed from the side. It is formed by bending so that there is a gap 12c through which the drive pull string 17a passes between the intermediate portion 12e. The connecting portion 12a can be plastically deformed so that the gap 12c is reduced or closed by applying a certain force from the front direction to a part including the other end portion 12h of the metal wire. By adopting such a configuration, not only the connecting portion 12b but also the connecting portion 12a does not change the diameter before and after processing even if it is manually processed (the diameter D0 remains). A necessary size difference can be ensured between the connecting portion 12a and the connecting portion 12b. Here, since the process of the connection part 12a is a caulking process in one direction, it can be easily performed.

また、本実施の形態では、照明器具１０を吊り下げ型照明器具としたが、本実施の形態は、天井直付型照明器具にも応用できる。   Moreover, although the lighting fixture 10 was made into the hanging type lighting fixture in this Embodiment, this Embodiment is applicable also to a ceiling direct attachment type lighting fixture.

図７は、本実施の形態の変形例に係る照明器具１０ａを示す正面部分断面図である。   FIG. 7 is a front partial cross-sectional view showing a lighting fixture 10a according to a modification of the present embodiment.

図７において、照明器具１０ａは、天井直付型照明器具である。照明器具１０ａは、器具本体１３、ランプ１５、セード１６、引き紐１７を備える。それぞれの部品については、図１に示した照明器具１０のものと同様である。   In FIG. 7, the lighting fixture 10a is a ceiling-mounted lighting fixture. The lighting fixture 10a includes a fixture body 13, a lamp 15, a shade 16, and a drawstring 17. About each component, it is the same as that of the lighting fixture 10 shown in FIG.

以上説明したように、本実施の形態に係る接続環１２は、ランプ１５、その点灯装置、ランプ１５のＯＮ／ＯＦＦ又は調光を切り替えるためのプルスイッチ１１、引き紐１７を有した吊り下げ型の照明器具１０又は天井直付型の照明器具１０ａを対象とし、駆動引き紐１７ａと操作引き紐１７ｂとを連結するものである。接続環１２は、鉄又は非鉄線材を上／下部で直径の異なる略Ｓ字状に形成したものである。接続環１２は、駆動引き紐１７ａを取り付ける上部の連結部１２ａと、操作引き紐１７ｂを取り付ける下部の連結部１２ｂを有する。上部の連結部１２ａは、駆動引き紐１７ａを通すための隙間１２ｃを正面に有し、その先端には線径分の曲げ突起１２ｄを有する。上部の連結部１２ａについては、線材が重なるようにカシメ加工を行い、プルスイッチ１１と接続環１２とを連結する。このような構成としたことで、引張荷重による上部の連結部１２ａの変形による隙間の発生を抑制することができる。また、カシメ加工によって上部の連結部１２ａの直径が小さくなり、上部の連結部１２ａが引張荷重に対し、より強固になるので、操作引き紐１７ｂが外れた際も、接続環１２が駆動引き紐１７ａと接続したままとなり、落下するおそれがない。一方、下部の連結部１２ｂは、操作引き紐１７ｂを通すための隙間１２ｆを側面に有する。下部の連結部１２ｂについては、カシメ加工によって、接続環１２と操作引き紐１７ｂとを結合する。カシメ方向が、加工時に下部の連結部１２ｂの直径の変化を回避する方向であることから、カシメ加工による引張強度のばらつきを抑制することができる。また、引き紐１７に強い引張荷重が加わったとき、下部の連結部１２ｂから確実に外れる効果を得られる。さらに、側面方向の隙間を操作引き紐１７ｂの太さ以下にしたことにより、通常使用時の操作引き紐１７ｂの外れを防止することができる。   As described above, the connection ring 12 according to the present embodiment is a hanging type having the lamp 15, its lighting device, the pull switch 11 for switching ON / OFF or dimming of the lamp 15, and the pull string 17. The driving pull string 17a and the operation pull string 17b are connected to the lighting apparatus 10 or the ceiling direct lighting apparatus 10a. The connection ring 12 is formed of iron or non-ferrous wire in a substantially S shape having a different diameter at the top / bottom. The connection ring 12 has an upper connecting portion 12a to which the driving pull cord 17a is attached and a lower connecting portion 12b to which the operation pull cord 17b is attached. The upper connecting portion 12a has a gap 12c for passing the drive pull string 17a in the front, and has a bending projection 12d corresponding to the wire diameter at the tip. About the upper connection part 12a, it crimps so that a wire may overlap, and the pull switch 11 and the connection ring 12 are connected. By setting it as such a structure, generation | occurrence | production of the clearance gap by the deformation | transformation of the upper connection part 12a by a tensile load can be suppressed. Further, the diameter of the upper connecting portion 12a is reduced by the caulking process, and the upper connecting portion 12a becomes stronger against the tensile load. Therefore, even when the operation pulling cord 17b is detached, the connection ring 12 is driven and pulled. It remains connected to 17a and there is no risk of falling. On the other hand, the lower connecting portion 12b has a gap 12f on the side surface for allowing the operation pull string 17b to pass therethrough. About the lower connection part 12b, the connection ring 12 and the operation pull string 17b are couple | bonded by caulking. Since the caulking direction is a direction that avoids a change in the diameter of the lower connecting portion 12b during processing, variations in tensile strength due to the caulking processing can be suppressed. Further, when a strong tensile load is applied to the drawstring 17, an effect of reliably detaching from the lower connecting portion 12b can be obtained. Furthermore, by making the gap in the side surface direction equal to or smaller than the thickness of the operation pull string 17b, it is possible to prevent the operation pull string 17b from being detached during normal use.

実施の形態２．
本実施の形態について、主に実施の形態１との差異を説明する。 Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

図８は、本実施の形態に係る接続環１２のプレス加工の様子を示す図である。   FIG. 8 is a diagram showing a state of press working of the connection ring 12 according to the present embodiment.

図８において、接続環１２は、実施の形態１に係るものと同様である。操作引き紐１７ｂ取付側の連結部１２ｂは、操作引き紐１７ｂが通る隙間１２ｆを正面方向に有するため、ペンチ等で手作業によりカシメ加工する代わりに、プレス加工機１８でカシメ加工する手法を用いることができる。   In FIG. 8, the connection ring 12 is the same as that according to the first embodiment. Since the connecting portion 12b on the operation pulling string 17b attachment side has a gap 12f through which the operation pulling string 17b passes in the front direction, a method of caulking with the press machine 18 is used instead of caulking by manual operation with pliers or the like. be able to.

このように、本実施の形態によれば、プレス加工機１８で正面方向から一定の力を加えることにより連結部１２ｂを塑性加工するため、カシメ加工の作業性が向上する。   Thus, according to this Embodiment, since the connection part 12b is plastically processed by applying a fixed force from the front direction with the press machine 18, the workability | operativity of a crimping process improves.

実施の形態３．
本実施の形態について、主に実施の形態１との差異を説明する。 Embodiment 3 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

図９は、本実施の形態に係る接続環１２を示す（ａ）正面図及び（ｂ）側面図である。   9A is a front view and FIG. 9B is a side view showing the connection ring 12 according to the present embodiment.

図９において、接続環１２は金属線材を略８字状に形成したものであり、駆動引き紐１７ａ取付側（プルスイッチ１１側）の連結部１２ａと操作引き紐１７ｂ取付側の連結部１２ｂとを有する。実施の形態１と同様に、連結部１２ａと連結部１２ｂとの直径の比は１：１．１〜１．４となることが望ましい。   In FIG. 9, the connection ring 12 is formed by forming a metal wire in an approximately eight-letter shape, and includes a connection portion 12 a on the drive pull string 17 a attachment side (pull switch 11 side) and a connection portion 12 b on the operation draw string 17 b attachment side. Have As in the first embodiment, it is desirable that the ratio of the diameters of the connecting portion 12a and the connecting portion 12b is 1: 1.1 to 1.4.

図９（ａ）に示すように、駆動引き紐１７ａ取付側（上側）の連結部１２ａは、円状に接続環１２の中間部１２ｅとクロスする。クロス終了部分から連結部１２ａの先端までは１．５ｍｍあるとする。操作引き紐１７ｂ取付側（下側）の連結部１２ｂは、半円を過ぎたところから、ストレートで接続環１２の中間部１２ｅとクロスする。クロス終了部分から連結部１２ｂの先端までは１．５ｍｍ以上あるとする。図９（ｂ）に示すように、連結部１２ａ及び連結部１２ｂは、接続環１２の中間部１２ｅに当接しており、駆動引き紐１７ａ及び操作引き紐１７ｂが通る隙間はない。そのため、駆動引き紐１７ａ及び操作引き紐１７ｂを接続環１２に取り付ける際には、駆動引き紐１７ａ及び操作引き紐１７ｂを、それぞれ連結部１２ａ及び連結部１２ｂの先端に引っ掛け、接続環１２の弾性により駆動引き紐１７ａ及び操作引き紐１７ｂをスライドさせて連結を行う。これにより、実施の形態１のようなカシメ加工が不要となる。したがって、駆動引き紐１７ａ及び操作引き紐１７ｂの取り付け時に引張強度が変化することはない。また、本実施の形態においても、上側の連結部１２ａと下側の連結部１２ｂとの直径の比が１：１．１〜１．４にすることで、操作引き紐１７ｂに強い引張荷重が加わったとき、操作引き紐１７ｂが連結部１２ｂから確実に外れる効果を得られる。さらに、クロス方向が連結部１２ａと連結部１２ｂとで逆方向になっているので、連結部１２ａと連結部１２ｂとが開き出した際に互いに干渉することがない。   As shown in FIG. 9A, the connecting portion 12a on the drive pull string 17a attachment side (upper side) crosses the intermediate portion 12e of the connection ring 12 in a circular shape. It is assumed that there is 1.5 mm from the cross end portion to the tip of the connecting portion 12a. The connecting part 12b on the operation pulling string 17b attachment side (lower side) crosses the intermediate part 12e of the connecting ring 12 in a straight line from the point where the semicircle has passed. It is assumed that there is 1.5 mm or more from the cross end portion to the tip of the connecting portion 12b. As shown in FIG. 9B, the connecting portion 12a and the connecting portion 12b are in contact with the intermediate portion 12e of the connecting ring 12, and there is no gap through which the drive pull cord 17a and the operation pull cord 17b pass. Therefore, when the drive pull string 17a and the operation pull string 17b are attached to the connection ring 12, the drive pull string 17a and the operation pull string 17b are hooked on the distal ends of the connection part 12a and the connection part 12b, respectively, and the elasticity of the connection ring 12 is obtained. Thus, the drive pull string 17a and the operation pull string 17b are slid to perform connection. Thereby, the caulking process like Embodiment 1 becomes unnecessary. Therefore, the tensile strength does not change when the drive pull string 17a and the operation pull string 17b are attached. Also in the present embodiment, when the ratio of the diameters of the upper connecting portion 12a and the lower connecting portion 12b is 1: 1.1 to 1.4, a strong tensile load is applied to the operation pull string 17b. When added, it is possible to obtain the effect that the operation pull string 17b is surely removed from the connecting portion 12b. Furthermore, since the cross direction is opposite between the connecting portion 12a and the connecting portion 12b, the connecting portion 12a and the connecting portion 12b do not interfere with each other when they open.

上記のように、本実施の形態では、接続環１２（連結具）は、操作引き紐１７ｂを引っ掛けるための連結部１２ｂ（引掛部）を備える。連結部１２ｂは、金属線材の一端部１２ｇ側を、操作引き紐１７ｂが引っ掛けられるように正面視で略環形に折り曲げるとともに、正面視で金属線材の一端部１２ｇと金属線材の中間部１２ｅとが交差するように折り曲げて形成される。連結部１２ｂは、金属線材の一端部１２ｇを含む一部に正面方向から一定の力を加えることにより側面視で金属線材の一端部１２ｇと金属線材の中間部１２ｅとの間に操作引き紐１７ｂが通る隙間があくように弾性変形可能である。このような構成としたことで、連結部１２ｂは、操作引き紐１７ｂが取り付けられる前と後で直径Ｄ２が変化しないため、連結部１２ａと連結部１２ｂとの間に必要な大きさの差を確保することができる。   As described above, in the present embodiment, the connection ring 12 (connector) includes the connection portion 12b (hook portion) for hooking the operation pull string 17b. The connecting portion 12b bends the one end portion 12g side of the metal wire rod into a substantially ring shape when viewed from the front so that the operation pulling string 17b is hooked, and the one end portion 12g of the metal wire rod and the intermediate portion 12e of the metal wire rod when viewed from the front side. It is formed by bending so as to intersect. The connecting portion 12b applies a constant force from the front direction to a part including the one end portion 12g of the metal wire rod, so that the operation pull string 17b is provided between the one end portion 12g of the metal wire rod and the intermediate portion 12e of the metal wire rod in a side view. It can be elastically deformed so that there is a gap through which it passes. By adopting such a configuration, the connecting portion 12b has a difference in necessary size between the connecting portion 12a and the connecting portion 12b because the diameter D2 does not change before and after the operation pull string 17b is attached. Can be secured.

また、本実施の形態では、接続環１２は、駆動引き紐１７ａを取り付けるための連結部１２ａ（取付部）を備える。連結部１２ａは、金属線材の他端部１２ｈ側を、駆動引き紐１７ａが取り付けられるように正面視で略環形に折り曲げて形成される。連結部１２ｂと連結部１２ａとは、金属線材が略８字形をなすように金属線材の両端部（一端部１２ｇ及び他端部１２ｈ）側を互いに異なる方向に折り曲げて形成される。金属線材の両端部は、金属線材の中間部１２ｅを挟んで互いに異なる側で金属線材の中間部１２ｅと交差する。このような構成としたことで、引き紐１７に一定以上の引張荷重が加わったとき、連結部１２ａ及び連結部１２ｂが開いても互いに干渉せず、スムーズに開く。   Moreover, in this Embodiment, the connection ring 12 is provided with the connection part 12a (attachment part) for attaching the drive pull string 17a. The connecting portion 12a is formed by bending the other end portion 12h side of the metal wire into a substantially ring shape when viewed from the front so that the drive pull cord 17a is attached. The connecting portion 12b and the connecting portion 12a are formed by bending both end portions (one end portion 12g and the other end portion 12h) of the metal wire in different directions so that the metal wire has an approximately 8-character shape. Both end portions of the metal wire cross the metal wire intermediate portion 12e on different sides with the metal wire intermediate portion 12e interposed therebetween. With such a configuration, when a tensile load of a certain level or more is applied to the drawstring 17, even if the connecting portion 12a and the connecting portion 12b are opened, they do not interfere with each other and open smoothly.

以上説明したように、本実施の形態に係る接続環１２は、ランプ１５、その点灯装置、ランプ１５のＯＮ／ＯＦＦ又は調光を切り替えるためのプルスイッチ１１、引き紐１７を有した吊り下げ型の照明器具１０又は天井直付型の照明器具１０ａを対象とし、駆動引き紐１７ａと操作引き紐１７ｂとを連結するものである。接続環１２は、鉄又は非鉄線材を略８字状に形成したものである。接続環１２は、駆動引き紐１７ａを取り付ける上部の連結部１２ａと、操作引き紐１７ｂを取り付ける下部の連結部１２ｂを有する。上部の連結部１２ａと下部の連結部１２ｂとの比は１：１．１〜１．４である。上部の連結部１２ａは、略円状であり、接続環１２の中間部１２ｅとクロスし、クロス終了部から先端までが１．５ｍｍ以上である。下部の連結部１２ｂは、略円状であるが、半円を過ぎたところから、ストレートで接続環１２の中間部１２ｅとクロスし、クロス終了部から先端までが１．５ｍｍ以上である。駆動引き紐１７ａと操作引き紐１７ｂとをそれぞれの先端に引っ掛け、接続環１２の弾性によりスライドすることで、駆動引き紐１７ａと操作引き紐１７ｂとを上／下部の連結部１２ａ，１２ｂにそれぞれ結合する。クロス方向は、上部の連結部１２ａと下部の連結部１２ｂとで逆方向とする。   As described above, the connection ring 12 according to the present embodiment is a hanging type having the lamp 15, its lighting device, the pull switch 11 for switching ON / OFF or dimming of the lamp 15, and the pull string 17. The driving pull string 17a and the operation pull string 17b are connected to the lighting apparatus 10 or the ceiling direct lighting apparatus 10a. The connection ring 12 is formed of iron or non-ferrous wire in a substantially 8-character shape. The connection ring 12 has an upper connecting portion 12a to which the driving pull cord 17a is attached and a lower connecting portion 12b to which the operation pull cord 17b is attached. The ratio of the upper connecting portion 12a and the lower connecting portion 12b is 1: 1.1 to 1.4. The upper connecting portion 12a is substantially circular, crosses the intermediate portion 12e of the connection ring 12, and is 1.5 mm or more from the end of the cross to the tip. The lower connecting portion 12b has a substantially circular shape, but crosses the intermediate portion 12e of the connecting ring 12 straight from the point where the semicircle is passed, and the distance from the end of the cross to the tip is 1.5 mm or more. The drive pull string 17a and the operation pull string 17b are hooked on the respective tips and slid by the elasticity of the connection ring 12, so that the drive pull string 17a and the operation pull string 17b are respectively connected to the upper / lower connecting portions 12a and 12b. Join. The cross direction is opposite between the upper connecting portion 12a and the lower connecting portion 12b.

以上、本発明の実施の形態について説明したが、これらのうち、２つ以上の実施の形態を組み合わせて実施しても構わない。あるいは、これらのうち、１つの実施の形態を部分的に実施しても構わない。あるいは、これらのうち、２つ以上の実施の形態を部分的に組み合わせて実施しても構わない。   As mentioned above, although embodiment of this invention was described, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

１０，１０ａ 照明器具、１１ プルスイッチ、１２ 接続環、１２ａ，１２ｂ 連結部、１２ｃ，１２ｆ 隙間、１２ｄ 曲げ突起、１２ｅ 中間部、１２ｇ 一端部、１２ｈ 他端部、１３ 器具本体、１４ 電線、１５ ランプ、１６ セード、１７ 引き紐、１７ａ 駆動引き紐、１７ｂ 操作引き紐、１８ プレス加工機。   10, 10a luminaire, 11 pull switch, 12 connecting ring, 12a, 12b connecting part, 12c, 12f gap, 12d bending projection, 12e intermediate part, 12g one end part, 12h other end part, 13 instrument body, 14 electric wire, 15 Lamp, 16 shades, 17 drawstrings, 17a drive drawstrings, 17b operation drawstrings, 18 press machine.

Claims (8)

照明器具のプルスイッチに取り付けられる第１紐と前記プルスイッチの操作のために引っ張られる第２紐とからなる引き紐の第１紐と第２紐とを連結する連結具であり、弾性を有する線材からなる連結具であって、
前記線材の一端部側を、前記第２紐が引っ掛けられるように正面視で略環形に折り曲げるとともに、側面視で前記線材の一端部と前記線材の中間部との間に前記第２紐が通る隙間があくように折り曲げて形成された、前記第２紐を前記隙間から通して引っ掛けるための引掛部を備え、
前記引掛部は、前記線材の一端部を含む一部に正面方向から一定の力を加えることにより前記隙間が縮小又は閉塞するように塑性変形可能であることを特徴とする連結具。 It is a connecting tool for connecting the first string and the second string of the pull string composed of the first string attached to the pull switch of the lighting fixture and the second string pulled for the operation of the pull switch, and has elasticity. A connector made of wire,
The one end side of the wire is bent into a substantially ring shape when viewed from the front so that the second string is hooked, and the second string passes between the one end of the wire and the intermediate portion of the wire when viewed from the side. A hook part for hooking the second string through the gap formed by bending so as to leave a gap;
The said hook part can be plastically deformed so that the said clearance gap may reduce or close | close by applying a fixed force from the front direction to a part including the one end part of the said wire. 前記連結具は、さらに、
前記線材の他端部側を、前記第１紐が取り付けられるように正面視で略環形に折り曲げて形成された、前記第１紐を取り付けるための取付部を備え、
前記引掛部と前記取付部とは、前記線材が略Ｓ字形をなすように前記線材の両端部側を互いに異なる方向に折り曲げて形成されていることを特徴とする請求項１に記載の連結具。 The connector further includes:
The other end portion side of the wire rod is formed by being bent into a substantially ring shape when viewed from the front so that the first string is attached, and includes an attachment part for attaching the first string.
2. The connector according to claim 1, wherein the hook portion and the attachment portion are formed by bending both ends of the wire in different directions so that the wire has a substantially S-shape. . 照明器具のプルスイッチに取り付けられる第１紐と前記プルスイッチの操作のために引っ張られる第２紐とからなる引き紐の第１紐と第２紐とを連結する連結具であり、弾性を有する線材からなる連結具において、
前記線材の一端部側を、前記第２紐が引っ掛けられるように正面視で略環形に折り曲げるとともに、正面視で前記線材の一端部と前記線材の中間部とが交差するように折り曲げて形成された、前記第２紐を引っ掛けるための引掛部を備え、
前記引掛部は、前記線材の一端部を含む一部に正面方向へ一定の力を加えることにより側面視で前記線材の一端部と前記線材の中間部との間に前記第２紐が通る隙間があくように弾性変形可能であることを特徴とする連結具。 It is a connecting tool for connecting the first string and the second string of the pull string composed of the first string attached to the pull switch of the lighting fixture and the second string pulled for the operation of the pull switch, and has elasticity. In a connector made of wire,
The one end side of the wire is bent into a substantially ring shape in front view so that the second string is hooked, and the one end portion of the wire and the intermediate portion of the wire member are crossed in front view. A hook for hooking the second string;
The hook part is a gap through which the second string passes between one end of the wire and the intermediate part of the wire in a side view by applying a constant force in a front direction to a part including the one end of the wire. A connecting tool characterized by being elastically deformable so as to pierce. 前記連結具は、さらに、
前記線材の他端部側を、前記第１紐が取り付けられるように正面視で略環形に折り曲げて形成された、前記第１紐を取り付けるための取付部を備え、
前記引掛部と前記取付部とは、前記線材が略８字形をなすように前記線材の両端部側を互いに異なる方向に折り曲げて形成されていることを特徴とする請求項３に記載の連結具。 The connector further includes:
The other end portion side of the wire rod is formed by being bent into a substantially ring shape when viewed from the front so that the first string is attached, and includes an attachment part for attaching the first string.
4. The connector according to claim 3, wherein the hook portion and the attachment portion are formed by bending both end portions of the wire in different directions so that the wire has an approximately 8-character shape. . 前記線材の両端部は、前記線材の中間部を挟んで互いに異なる側で前記線材の中間部と交差していることを特徴とする請求項４に記載の連結具。   The both ends of the said wire rod cross | intersect with the intermediate part of the said wire on the mutually different side on both sides of the intermediate part of the said wire rod, The coupling tool of Claim 4 characterized by the above-mentioned. 前記取付部は、前記線材の他端部側を正面視で第１直径を有する略円環形に折り曲げて形成されており、
前記引掛部は、前記線材の一端部側を正面視で前記第１直径より長い第２直径を有する略円環形に折り曲げて形成されていることを特徴とする請求項２又は４又は５に記載の連結具。 The mounting portion is formed by bending the other end portion of the wire rod into a substantially annular shape having a first diameter in a front view,
The said hook part is formed by bend | folding the one end part side of the said wire to the substantially annular | circular shape which has a 2nd diameter longer than the said 1st diameter by a front view, It is characterized by the above-mentioned. Connector. 前記第２直径は、前記第１直径の１．１〜１．４倍であることを特徴とする請求項６に記載の連結具。   The connector according to claim 6, wherein the second diameter is 1.1 to 1.4 times the first diameter. 請求項１から７までのいずれかに記載の連結具と、
前記連結具により連結された引き紐と、
前記引き紐が引っ張られることで操作されるプルスイッチと、
前記プルスイッチにより制御される点灯装置とを備えることを特徴とする照明器具。 A connector according to any one of claims 1 to 7,
A drawstring connected by the connector,
A pull switch operated by pulling the drawstring;
A lighting apparatus comprising: a lighting device controlled by the pull switch.

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