JP6280327B2

JP6280327B2 - Latch type release device

Info

Publication number: JP6280327B2
Application number: JP2013160153A
Authority: JP
Inventors: 雅章神崎; 修次松本; 松本　英樹; 英樹松本
Original assignee: Hochiki Corp
Current assignee: Hochiki Corp
Priority date: 2013-08-01
Filing date: 2013-08-01
Publication date: 2018-02-14
Anticipated expiration: 2033-08-01
Also published as: JP2015031024A

Description

本発明は、火災が発生した場合に開放状態に保持している防火戸のラッチを解除して閉鎖させるラッチ式レリーズ装置に関する。
The present invention relates to a latch-type release device that releases and closes a latch of a fire door that is held open when a fire occurs.

従来、防火戸のラッチ式レリーズ装置は、避難経路となる例えば廊下に設置した防火戸を壁際に沿った開放状態に保持しており、火災が発生した場合に、遠隔操作による電磁ソレノイドの駆動でラッチを解除し、ドアクローザの力により防火戸を通路を遮る閉鎖位置に移動させている。 Conventionally, a fire door latch-type release device holds a fire door that is installed in a corridor that serves as an evacuation route in an open state along the wall. The latch is released and the fire door is moved to the closed position that blocks the passage by the force of the door closer.

このような防火戸のラッチ式レリーズ装置は、防火戸設置場所の壁面に日本工業規格（ＪＩＳ）の規格品として知られたスイッチボックス（アウトレットボックスとも言う）を埋込設置し、スイッチボックスの開口部に、裏面にラッチ式レリーズを取り付けたカバープレートをねじ止め固定し、更に、その外側に化粧カバーを装着するようにしている。 Such a latch release device for a fire door has a switch box (also referred to as an outlet box) known as a Japanese Industrial Standard (JIS) standard embedded in the wall surface of the fire door installation location. A cover plate having a latch release on the back surface is screwed to the part, and a decorative cover is attached to the outside.

図１５は従来のラッチ式レリーズ装置の説明図であり、図１５（Ａ）に正面を示し、図１５（Ｂ）にＸ−Ｘ断面を示す。また図１６はスイッチボックスを取り出して示して示した説明図であり、図１６（Ａ）に正面を示し、図１６（Ｂ）にＸ−Ｘ断面を示す。さらに図１７はカバープレートを取り出して示す。 FIGS. 15A and 15B are explanatory diagrams of a conventional latch release device, in which FIG. 15A shows a front view and FIG. 15B shows an XX cross section. FIG. 16 is an explanatory view showing the switch box taken out, and FIG. 16 (A) shows the front, and FIG. 16 (B) shows the XX cross section. Further, FIG. 17 shows the cover plate taken out.

図１５乃至図１７に示すように、従来のラッチ式レリーズ装置は、スイッチボックス１００の開口部に、裏面にラッチ式レリーズ１０４を取付け固定したカバープレート１０２を４箇所でねじ１０６によりねじ込み固定している。 As shown in FIGS. 15 to 17, the conventional latch release device has a cover plate 102 in which a latch release 104 is attached and fixed to the opening of the switch box 100 at four locations with screws 106 and fixed. Yes.

スイッチボックス１００は、略正方形の開口部をもち、開口部内側に４箇所の張出部１０８を一体に形成し、そこにねじ穴１１０を加工している。またスイッチボックス１００の上部には通線穴を備えた電線管接続口１１２を設け、電線管を介して外部から引き込んだ信号線を、ラッチ式レリーズ１０４を駆動する電磁ソレノイドに接続している。
The switch box 100 has a substantially square opening, and four projecting portions 108 are integrally formed inside the opening, and a screw hole 110 is machined therein. Further, a conduit connecting port 112 having a through hole is provided in the upper portion of the switch box 100, and a signal line drawn from the outside through the conduit is connected to an electromagnetic solenoid that drives the latch release 104.

スイッチボックス１００のねじ穴１１０の中心位置は、正方形開口の対角線交点を中心Ｐとした所定の半径Ｒの仮想的な円上となる位置であり、ねじ穴１１０の図示の横幅はＬ１であり、これに対し図示の縦幅はそれより長いＬ２となっており、Ｌ１，Ｌ２は規格で決まっており、例えばＬ１＝４６ｍｍ、Ｌ２＝８３．５ｍｍとしている。
The center position of the screw hole 110 of the switch box 100 is a position on a virtual circle having a predetermined radius R with the diagonal intersection of the square opening as the center P. The illustrated lateral width of the screw hole 110 is L1, On the other hand, the vertical width shown in the figure is longer than L2, and L1 and L2 are determined by the standard. For example, L1 = 46 mm and L2 = 83.5 mm.

カバープレート１０２は、図示で横向きにレリーズ穴１１４を開口し、スイッチボックス１００のねじ穴１１０に対応して円弧穴１１６ａを４箇所に形成している。また、カバープレート１０２は、レリーズ穴１１４を図示で縦向きとした取付けを可能とするため、円弧穴１１６ａに対し９０度回転した位置に別の円弧穴１１６ｂを４箇所に形成している。
In the cover plate 102, release holes 114 are opened sideways in the figure, and arc holes 116a are formed at four locations corresponding to the screw holes 110 of the switch box 100. Further, the cover plate 102 has four arc holes 116b at four positions at positions rotated 90 degrees with respect to the arc hole 116a in order to enable the release hole 114 to be mounted vertically in the drawing.

図１８はスイッチボックスにカバープレートを取付ける場合の位置合せを示した説明図である。図１８に示すように、スイッチボックス１００の開口部にカバープレート１０２を載せ、何れか一箇所について、カバープレート１０２の円弧穴１１６ａの中にスイッチボックス１００のねじ穴１１０が見えるように位置合せし、この状態で円弧穴１１６ａを介してねじ穴１１０にねじをねじ込み、続いて、残り３箇所について同様に位置合せして円弧穴１１６ａを介してねじ穴１１０にねじをねじ込み、最終的にスイッチボックス１００の開口部にカバープレート１０２を位置合せてして締め付け固定する。 FIG. 18 is an explanatory view showing alignment when the cover plate is attached to the switch box. As shown in FIG. 18, the cover plate 102 is placed in the opening of the switch box 100, and at any one position, the screw hole 110 of the switch box 100 is visible in the arc hole 116 a of the cover plate 102. In this state, screws are screwed into the screw holes 110 through the arc holes 116a, and then the remaining three locations are similarly aligned and screws are screwed into the screw holes 110 through the arc holes 116a. The cover plate 102 is aligned with the opening of 100 and fastened and fixed.

図１９は、レリーズ穴１１４を図示で縦向きとなるようにカバープレート１０２をねじ込み固定する場合であり、図１８に対しカバープレート１０２を９０°回転した位置とし、この場合も、何れか一箇所について、カバープレート１０２の円弧穴１１６ｂの中にスイッチボックス１００のねじ穴１１０が見えるように位置合せし、この状態で円弧穴１１６ｂを介してねじ穴１１０にねじをねじ込み、続いて、残り３箇所について同様に位置合せしてねじ穴１１０に円弧穴１１６ｂを介してねじをねじ込み、最終的にスイッチボックス１００の開口部にカバープレート１０２を位置合せてして締め付け固定する。 FIG. 19 shows a case where the cover plate 102 is screwed and fixed so that the release hole 114 is in the vertical direction in the drawing, and the cover plate 102 is rotated by 90 ° with respect to FIG. Are aligned so that the screw hole 110 of the switch box 100 can be seen in the arc hole 116b of the cover plate 102, and in this state, screws are screwed into the screw hole 110 through the arc hole 116b, and then the remaining three places In the same manner, the screw is screwed into the screw hole 110 through the circular arc hole 116b, and finally the cover plate 102 is aligned and tightened and fixed to the opening of the switch box 100.

特開平５−３１７４３６号公報JP-A-5-317436

しかしながら、このような従来のラッチ式レリーズ装置におけるスイッチボックスに対するカバープレートの取付作業にあっては、スイッチボックスから引き出した信号線をカバープレートの裏面に取り付けているラッチ式レリーズの電磁ソレノイドに接続した状態で、カバープレートをスイッチボックスの開口部に、図１５又は図１６に示したように位置合せしてねじにより取り付け固定しており、カバープレートを片手で位置決めしながら、もう一方の手にドライバを持ってねじをねじ穴にセットしてねじ込むという煩雑な作業を必要とし、手間と時間がかかると共に熟練を必要とする作業となっている。 However, in the work of attaching the cover plate to the switch box in such a conventional latch type release device, the signal wire drawn from the switch box is connected to the electromagnetic solenoid of the latch type release attached to the back surface of the cover plate. In this state, the cover plate is aligned with the opening of the switch box as shown in FIG. 15 or 16 and fixed with screws, and the cover plate is positioned with one hand while the driver is placed in the other hand. This requires a cumbersome work of setting the screw in the screw hole and screwing it, which is time-consuming and time-consuming and requires skill.

本発明は、スイッチボックスに対するカバープレートの位置決めを伴う取付作業を簡単且つ容易に行うことを可能とするラッチ式レリーズ装置を提供することを目的とする。
An object of the present invention is to provide a latch-type release device that makes it possible to easily and easily perform an attaching operation involving positioning of a cover plate with respect to a switch box.

（ラッチ式レリーズの２方向取付選択構造その１）
また、本発明は、防火戸を設置する場所の壁面に埋設されたスイッチボックスの開口部に、ラッチ式レリーズを備えたカバープレートをねじ止め固定するラッチ式レリーズ装置に於いて、
スイッチボックスは、開口部の４箇所にねじ穴を形成し、
カバープレートは、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部（ねじシャフト部）を挿通可能な円弧穴を４箇所に形成すると共に、円弧穴の各々に、カバープレートを第１の向きで取付ける場合にねじの頭部を挿通可能な大径の第１遊嵌穴と、カバープレートの第１の向きに対し９０度回転した第２の向きで取り付ける場合にねじの頭部を挿通可能な大径の第２遊嵌穴とを形成し、
スイッチボックスの４箇所のねじ穴にねじの先端をねじ込んで起立した状態で、カバープレートの第１の向きに対応した第１遊嵌穴は第２の向きに対応した第２遊嵌穴を位置合せして嵌め入れた後に、第１の向きは又は第２の向きに回動してねじ止め固定する取付構造としたことを特徴とする。
(Latch type release two-way mounting selection structure 1)
Further, the present invention provides a latch release device for fixing a cover plate having a latch release to an opening of a switch box embedded in a wall surface of a place where a fire door is installed.
The switch box has four screw holes at the opening,
The cover plate is formed with four arc holes into which the screw portions (screw shaft portions) of the screws to be fitted into the four screw holes of the switch box can be inserted, and the cover plate is formed in each of the arc holes. A large-diameter first loose-fitting hole through which the screw head can be inserted when mounting in the orientation, and a screw head when inserting in the second orientation rotated 90 degrees with respect to the first orientation of the cover plate Forming a possible large diameter second loose fit hole,
The first loose-fitting hole corresponding to the first direction of the cover plate is positioned in the second loose-fitting hole corresponding to the second direction with the tip of the screw screwed into the four screw holes of the switch box. After fitting together, the mounting structure is characterized in that the first direction or the second direction is rotated and fixed with screws.

（ラッチ式レリーズの２方向取付選択構造その２）
また、本発明は、防火戸を設置する場所の壁面に埋設されたスイッチボックスの開口部に、ラッチ式レリーズを備えたカバープレートをねじ止め固定するラッチ式レリーズ装置に於いて、
スイッチボックスは、開口部の４箇所にねじ穴を形成し、
カバープレートは、前記スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部（ねじシャフト部）を挿通可能な円弧穴を４箇所に形成すると共に、円弧穴の各々にねじの頭部を挿通可能な大径の遊嵌穴を形成し、
スイッチボックスの４箇所のねじ穴にねじの先端をねじ込んで起立した状態で、カバープレートの第１の向き又は第２の向きに対応して遊嵌穴を位置合せして嵌め入れた後に、第１の向きは又は第２の向きに回動してねじ止め固定する取付構造としたことを特徴とする。
(Latch-type release two-way mounting selection structure 2)
Further, the present invention provides a latch release device for fixing a cover plate having a latch release to an opening of a switch box embedded in a wall surface of a place where a fire door is installed.
The switch box has four screw holes at the opening,
The cover plate has four arc holes through which the screw portions (screw shaft portions) of the screws to be fitted into the four screw holes of the switch box can be inserted, and the head of the screw is inserted into each of the arc holes. Forming possible large diameter loose fitting holes,
In the state where the tip of the screw is screwed into the four screw holes of the switch box and stands up, the loose fitting hole is aligned and fitted in accordance with the first direction or the second direction of the cover plate, It is characterized in that the mounting structure is configured to rotate in the direction of 1 or the second direction and be fixed with screws.

（ねじ穴と円弧穴の位置関係）
スイッチボックスのねじ穴を、カバープレートを取付ける略正方形の開口部の対角線交点を中心とする所定半径の円に内接する所定の長方形の頂点が位置するカバー内側の４箇所に形成し、
カバープレートの円弧穴を、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部を挿通可能な円の一部となる４箇所に形成する。
(Positional relationship between screw holes and arc holes)
Screw holes of the switch box are formed at four locations inside the cover where the apexes of a predetermined rectangle inscribed in a circle with a predetermined radius centered on a diagonal intersection of a substantially square opening to which the cover plate is attached,
Arc holes of the cover plate are formed at four locations that are part of a circle through which threaded portions of screws that fit into the four screw holes of the switch box can be inserted.

（カバープレートを横移動して位置決めする取付構造）
本発明は、防火戸を設置する場所の壁面に埋設されたスイッチボックスの開口部に、ラッチ式レリーズを備えたカバープレートをねじ止め固定するラッチ式レリーズ装置に於いて、
スイッチボックスは、前記開口部の４箇所にねじ穴を形成し、
カバープレートは、
スイッチボックスに第１の向きで取付ける場合に、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部を挿通可能な横向きの第１の長穴を４箇所に形成すると共に第１の長穴の各々にねじの頭部を挿通可能な大径の遊嵌穴を形成し、且つ
第１の向きに対し９０度回転した第２の向きで取り付ける場合に、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部を挿通可能な縦向きの第２の長穴を４箇所に形成すると共に第２の長穴の各々にねじの頭部を挿通可能な大径の遊嵌穴を形成し、
スイッチボックスの４箇所のねじ穴にねじの先端をねじ込んで起立した状態で、カバープレートの第１の向きに対応した第１の長穴の遊嵌穴又は第２の向きに対応した第２の長穴の遊嵌穴を位置合せして嵌め入れた後に、カバープレートを横移動により位置決めしてねじ止め固定する取付構造としたことを特徴とする。
(Mounting structure that moves the cover plate laterally)
The present invention relates to a latch-type release device in which a cover plate having a latch-type release is screwed and fixed to an opening of a switch box embedded in a wall surface where a fire door is installed.
The switch box is formed with screw holes at four locations of the opening,
The cover plate
When mounting to the switch box in the first direction, the first elongated hole is formed in four laterally oriented first elongated holes through which the screw portions of the screws to be fitted into the four screw holes of the switch box can be inserted. When a large diameter loose-fitting hole into which the head of the screw can be inserted is formed in each of them and mounted in the second direction rotated 90 degrees with respect to the first direction, the four screw holes in the switch box Four vertical second elongated holes through which the threaded portion of the screw to be fitted can be inserted are formed at four locations, and a large diameter loose fitting hole through which the screw head can be inserted is formed in each of the second elongated holes. ,
In a state where the tip end of the screw is screwed into the four screw holes of the switch box and stands upright, the first elongated hole corresponding to the first direction of the cover plate or the second direction corresponding to the second direction After the long hole loose fitting hole is aligned and fitted, the cover plate is positioned by lateral movement and fixed with screws.

（カバープレートを縦移動して位置決めする取付構造）
本発明は、防火戸を設置する場所の壁面に埋設されたスイッチボックスの開口部に、ラッチ式レリーズを備えたカバープレートをねじ止め固定するラッチ式レリーズ装置に於いて、
スイッチボックスは、開口部の４箇所にねじ穴を形成し、
カバープレートは、
スイッチボックスに第１の向きで取付ける場合に、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部を挿通可能な縦向きの第１の長穴を４箇所に形成すると共に第１の長穴の各々にねじの頭部を挿通可能な大径の遊嵌穴を形成し、且つ
第１の向きに対し９０度回転した第２の向きで取り付ける場合に、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部を挿通可能な横向きの第２の長穴を４箇所に形成すると共に第２の長穴の各々にねじの頭部を挿通可能な大径の遊嵌穴を形成し、
スイッチボックスの４箇所のねじ穴にねじの先端をねじ込んで起立した状態で、カバープレートの第１の向きに対応した第１の長穴の遊嵌穴又は第２の向きに対応した第２の長穴の遊嵌穴を位置合せして嵌め入れた後に、カバープレートを縦移動により位置決めしてねじ止め固定する取付構造としたことを特徴とする。

(Mounting structure that moves and positions the cover plate vertically)
The present invention relates to a latch-type release device in which a cover plate having a latch-type release is screwed and fixed to an opening of a switch box embedded in a wall surface where a fire door is installed.
The switch box has four screw holes at the opening,
The cover plate
When the switch box is mounted in the first direction, the first elongated holes are formed at four positions in the vertical direction through which the screw portions of the screws to be fitted into the four screw holes of the switch box can be inserted. Four screw holes in the switch box when a large-diameter loose-fitting hole into which the screw head can be inserted is formed in each of the holes, and the holes are mounted in the second direction rotated 90 degrees with respect to the first direction. Four lateral second long holes through which the screw portion of the screw to be fitted can be inserted are formed at four locations, and a large diameter loose fitting hole through which the screw head can be inserted is formed in each of the second long holes. ,
In a state where the tip end of the screw is screwed into the four screw holes of the switch box and stands upright, the first elongated hole corresponding to the first direction of the cover plate or the second direction corresponding to the second direction After the long hole loose fitting hole is aligned and fitted, the cover plate is positioned by vertical movement and fixed with screws.

（基本的な効果）
本発明のラッチ式レリーズ装置によれば、スイッチボックスは、カバーを取付ける開口部の４箇所にねじ穴を形成し、カバープレートは、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部（ねじシャフト部）を挿通可能な円弧穴を４箇所に形成すると共に、円弧穴の各々に、ねじの頭部を挿通可能な大径の遊嵌穴を形成し、スイッチボックスの４箇所のねじ穴にねじの先端をねじ込んで起立した状態で、カバープレートの遊嵌穴をねじの頭部に位置合せして嵌め入れた後に所定の向き回動してねじ止め固定する取付構造としたため、スイッチボックスから引き出した信号線をカバープレートの裏側に装着したラッチ式レリーズに接続した状態で、スイッチボックスの開口部にカバープレートを取付固定する場合、まず、スイッチボックス開口部の４箇所のねじ穴にねじの先端部分を少しねじ込んで予め起立しておき、この状態でカバープレートの円弧穴の一部に形成している大径の遊嵌穴を、ねじ頭部に合せて嵌め入れることで、カバープレートをスイッチボックス側にセットし、続いて、スイッチボックスの開口部にカバープレートを位置合せしてねじを締め込むことで固定することができ、スイッチボックスに対するカバープレートの位置合せとねじ込みを別々の作業に分離でき、熟練を必要とすることなく、簡単且つ容易にスイッチボックスにカバープレートを取り付け固定することができる。
(Basic effect)
According to the latch release device of the present invention, the switch box is formed with screw holes at four positions of the opening portion to which the cover is attached, and the cover plate is threaded portions of screws to be fitted into the four screw holes of the switch box ( The screw shaft part) can be inserted into four circular holes, and each of the circular holes has a large diameter loose-fitting hole through which the screw head can be inserted. The switch box has a mounting structure in which the end of the screw is screwed into the upright position, and the loose fit hole of the cover plate is aligned with the head of the screw, and then rotated in a predetermined direction and fixed with screws. When the cover plate is attached and fixed to the opening of the switch box with the signal line pulled out from the latch release installed on the back side of the cover plate, first switch The tip of the screw is slightly screwed into the four screw holes in the box opening and raised in advance. In this state, the large diameter loose-fitting hole formed in a part of the arc hole of the cover plate is The cover plate is set on the switch box side by fitting it to the part, and then it can be fixed by aligning the cover plate in the opening of the switch box and tightening the screws. The alignment and screwing of the cover plate can be separated into separate operations, and the cover plate can be easily and easily attached and fixed to the switch box without requiring skill.

（ラッチ式レリーズの２方向取付選択構造による効果）
また、カバープレートに、スイッチボックスの４箇所のねじ穴に嵌め入れるねじのねじ部を挿通可能な円弧穴を４箇所に形成すると共に、円弧穴の各々に、カバープレートを第１の向きで取付ける場合にねじの頭部を挿通可能な大径の第１遊嵌穴と、カバープレートの第１の向きに対し９０度回転した第２の向きで取り付ける場合にねじの頭部を挿通可能な大径の第２遊嵌穴とを形成することで、スイッチボックスに対しラッチ式レリーズの向きを横向き（第１の向き）又は縦向き（第２の向き）で取付ける場合についても、スイッチボックスに対するカバープレートの位置合せとねじ込みを別々の作業に分離でき、熟練を必要とすることなく、簡単且つ容易にスイッチボックスにカバープレートを取り付け固定することができる。
(Effects of 2-way mounting selection structure of latch release)
Further, the cover plate is formed with four arc holes through which the screw portions of the screws to be fitted into the four screw holes of the switch box can be inserted, and the cover plate is attached to each of the arc holes in the first direction. A large-diameter first loose-fitting hole through which the screw head can be inserted, and a screw head that can be inserted through the second orientation rotated 90 degrees with respect to the first direction of the cover plate. A cover for the switch box is also provided when the latch release is mounted in the horizontal direction (first direction) or the vertical direction (second direction) with respect to the switch box by forming a second loose-fitting hole with a diameter. The alignment and screwing of the plate can be separated into separate operations, and the cover plate can be attached and fixed to the switch box simply and easily without requiring skill.

（カバープレートを横移動又は縦移動して位置決めする取付構造の効果）
また、スイッチボックスの４箇所のねじ穴にねじの先端をねじ込んで起立した状態で、カバープレートの第１の向きに対応した第１の長穴の遊嵌穴又は第２の向きに対応した第２の長穴の遊嵌穴を位置合せして嵌め入れた後に、カバープレートを横移動又は縦移動により位置決めしてねじ止め固定する取付構造とすることで、スイッチボックスに対しラッチ式レリーズの向きを横向き（第１の向き）又は縦向き（第２の向き）で取付ける場合についても、スイッチボックスに対するカバープレートの位置合せとねじ込みを別々の作業に分離でき、熟練を必要とすることなく、簡単且つ容易にスイッチボックスにカバープレートを取り付け固定することができる。
(Effect of mounting structure that positions the cover plate by moving it horizontally or vertically)
In addition, in the state where the tip of the screw is screwed into the four screw holes of the switch box and stands upright, the first elongated hole corresponding to the first orientation of the cover plate or the second orientation corresponding to the second orientation. The orientation of the latch-type release with respect to the switch box is as follows. After the loose fitting holes of 2 are aligned and fitted, the cover plate is positioned by lateral movement or vertical movement and fixed with screws. When mounting the switch in landscape orientation (first orientation) or portrait orientation (second orientation), alignment of the cover plate with respect to the switch box and screwing can be separated into separate operations, without the need for skill. And a cover plate can be easily attached and fixed to a switch box.

ラッチ式レリーズを横向き配置とした実施形態を示した説明図An explanatory view showing an embodiment in which the latch release is disposed sideways. スイッチボックスを取出して示した説明図Explanatory drawing showing the switch box taken out カバープレートを取出して示した説明図Explanatory drawing showing the cover plate taken out 図１のスイッチボックス側に起立したねじに対するカバープレートの嵌め込みを示した説明図Explanatory drawing which showed fitting of the cover plate with respect to the screw standing up on the switch box side of FIG. 図４に続く位置合せと取付け固定を示した説明図Explanatory drawing showing alignment and mounting fixation following FIG. 図４及び図５に対応したカバープレート嵌め込みと取付け固定を示した断面図Sectional view showing cover plate fitting and mounting fixing corresponding to FIGS. 4 and 5 ラッチ式レリーズを縦向き配置とした実施形態を示した説明図An explanatory view showing an embodiment in which the latch release is vertically arranged. 図７のスイッチボックス側に起立したねじに対するカバープレートの嵌め込みを示した説明図Explanatory drawing which showed fitting of the cover plate with respect to the screw standing up on the switch box side of FIG. 図８に続く位置合せと取付け固定を示した説明図Explanatory drawing showing alignment and mounting fixation following FIG. 遊嵌穴付きの円弧穴を二重に形成したカバープレートの実施形態を示した説明図Explanatory drawing which showed embodiment of the cover plate which formed the circular arc hole with a loose fitting hole doubly 図１０の外周側の遊嵌穴付きの円弧穴を使用して取付け固定するスイッチボックスを示した説明図Explanatory drawing which showed the switch box attached and fixed using the circular arc hole with the loose fitting hole of the outer peripheral side of FIG. ラッチ式レリーズを横向き配置のみとするカバープレートを用いた実施形態を示した説明図Explanatory drawing which showed the embodiment using the cover plate which makes a latch release only a sideways arrangement カバープレートを横移動して取付け固定する実施形態を示した説明図Explanatory drawing which showed embodiment which moves and fixes a cover plate laterally カバープレートを縦移動して取付け固定する実施形態を示した説明図Explanatory drawing which showed embodiment which moves and fixes a cover plate vertically 従来のラッチ式レリーズ装置を示した説明図Explanatory drawing showing a conventional latch release device 図１５のスイッチボックスを示した説明図Explanatory drawing which showed the switch box of FIG. 従来のカバープレートを取り出して示した説明図Explanatory drawing showing a conventional cover plate taken out ラッチ式レリーズを横向き配置とした従来装置を示した説明図Explanatory drawing showing a conventional device with a latch release arranged sideways ラッチ式レリーズを縦向き配置とした従来装置を示した説明図Explanatory drawing showing a conventional device with the latch release vertically oriented

［ラッチ式レリーズ装置の概要］
図１はラッチ式レリーズを横向き配置とした実施形態を示した説明図であり、図１（Ａ）は正面を示し、図１（Ｂ）はＸ−Ｘ断面を示す。また図２はスイッチボックスを取出して示した説明図であり、図２（Ａ）に正面を示し、図２（Ｂ）に側面を一部断面で示す。更に、図３はカバープレートを取出して示した説明図である。 [Outline of latch release device]
FIGS. 1A and 1B are explanatory views showing an embodiment in which the latch release is disposed sideways, FIG. 1A shows a front view, and FIG. 1B shows an XX cross section. FIG. 2 is an explanatory view showing the switch box taken out. FIG. 2 (A) shows a front view, and FIG. 2 (B) shows a side view in partial section. Further, FIG. 3 is an explanatory view showing the cover plate taken out.

図１乃至図３に示すように、ラッチ式レリーズ装置は、防火戸を設置する場所の壁面等に埋設されるスイッチボックス１０の開口部に、裏側にラッチ式レリーズ１４を取り付けたカバープレート１２を４本のねじ１６によりねじ込み固定している。 As shown in FIGS. 1 to 3, the latch release device includes a cover plate 12 having a latch release 14 attached to the back side of an opening of a switch box 10 embedded in a wall surface or the like where a fire door is installed. It is fixed by screwing with four screws 16.

スイッチボックス１０は、日本工業規格（ＪＩＳ）の規格品であり、略正方形の開口部を備えた厚さが例えば１．６ｍｍの金属製ボックスであり、開口部に相対して設けた４箇所の張出部１８の各々にねじ穴３０を加工している。 The switch box 10 is a Japanese Industrial Standard (JIS) standard product, which is a metal box having a thickness of, for example, 1.6 mm provided with a substantially square opening, and is provided at four locations provided relative to the opening. A screw hole 30 is formed in each of the overhang portions 18.

スイッチボックス１０におけるねじ穴３０の中心位置は、図２（Ａ）に示すように、略正方形の開口部における対角線交点Ｐを中心とする所定半径Ｒの仮想的な円３２に内接する図上で横幅Ｌ１、縦幅Ｌ２の所定の長方形の頂点の位置としている。ねじ穴３０の中心間隔となる横幅Ｌ１と縦幅Ｌ２は規格で決まっており、例えばＬ１＝４６ｍｍ、Ｌ２＝８３．５ｍｍとなる。なお、スイッチボックス１０は図１３の従来例と同じである。 As shown in FIG. 2A, the center position of the screw hole 30 in the switch box 10 is inscribed in a virtual circle 32 having a predetermined radius R centering on the diagonal intersection P in the substantially square opening. The positions of the vertices of a predetermined rectangle having a horizontal width L1 and a vertical width L2. The horizontal width L1 and the vertical width L2 that are the center interval of the screw holes 30 are determined by the standard, for example, L1 = 46 mm and L2 = 83.5 mm. The switch box 10 is the same as the conventional example of FIG.

スイッチボックス１０の図示上部には電線管接続口２０を形成し、ここに電線管を接続し、電線管を通して通線穴２０ａから信号線をボックス内に引き込み、カバープレート１２の裏側に取り付けているラッチ式レリーズ１４の電磁ソレノイド（図示せず）に信号線を接続する。 A conduit connection port 20 is formed in the upper portion of the switch box 10 in the figure, and the conduit is connected to the switch box 10. The signal line is drawn into the box from the through hole 20 a through the conduit and attached to the back side of the cover plate 12. A signal line is connected to an electromagnetic solenoid (not shown) of the latch release 14.

カバープレート１２は、コーナ部をアール取りした厚さ１．６ｍｍ程度の略正方形の金属板であり、中央に、図示横向きにレリーズ穴２２を開口し、その両側に皿ねじを挿通する通し穴３４を形成している。 The cover plate 12 is a substantially square metal plate having a thickness of about 1.6 mm with a rounded corner. The cover plate 12 has a release hole 22 in the center in the illustrated horizontal direction, and through holes 34 through which countersunk screws are inserted. Is forming.

またカバープレート１２の上下には皿ねじ穴３６を形成し、図１に示すスイッチボックス１０に対するカバープレート１２の取り付け固定状態で、カバープレート１２の前面に装着する化粧カバーを、皿ねじによる皿ねじ穴３６に対するねじ込みで取付け可能としている。なお、化粧カバーには、レリーズ穴２２に対応した開口を形成している。 Also, countersunk screw holes 36 are formed on the upper and lower sides of the cover plate 12 so that the decorative cover to be attached to the front surface of the cover plate 12 in a state where the cover plate 12 is fixedly attached to the switch box 10 shown in FIG. It can be attached by screwing into the hole 36. Note that an opening corresponding to the release hole 22 is formed in the decorative cover.

スイッチボックス１０のねじ穴３０に対応したカバープレート１２の４箇所には、ねじ１６のねじシャフト部を挿通可能な円弧穴２４を形成している。この円弧穴２４は、スイッチボックス１０のねじ穴３０が位置する仮想的な円３２に沿った円弧形状としており、この円３２に内接する正八角形の１つ置きの辺の位置に略対応して円弧穴２４を４箇所に分けて形成している。
Arc holes 24 into which the screw shaft portions of the screws 16 can be inserted are formed at four locations on the cover plate 12 corresponding to the screw holes 30 of the switch box 10. The arc hole 24 has an arc shape along a virtual circle 32 where the screw hole 30 of the switch box 10 is located, and substantially corresponds to the positions of every other side of a regular octagon inscribed in the circle 32. The arc holes 24 are formed in four places.

カバープレート１２の円弧穴２４とスイッチボックス１０のねじ穴３０との関係は、レリーズ穴２２を図示で横向きとした第１の向きでカバープレート１２をスイッチボックス１０に取付ける場合、図３に示すＡ点がねじ穴３０の中心位置となる。 The relationship between the arc hole 24 of the cover plate 12 and the screw hole 30 of the switch box 10 is shown in FIG. 3 when the cover plate 12 is attached to the switch box 10 in the first orientation in which the release hole 22 is laterally illustrated. The point is the center position of the screw hole 30.

また、レリーズ穴２２を図示の横向きに対し９０°回転して縦向きとした第２の向きでカバープレート１２をスイッチボックス１０に取付ける場合、図３に示すＢ点がねじ穴３０の中心位置となる。 Further, when the cover plate 12 is attached to the switch box 10 in the second direction in which the release hole 22 is rotated 90 ° with respect to the horizontal direction shown in the drawing and the vertical direction, the point B shown in FIG. Become.

カバープレート１２を第１の向き（レリーズ穴２２を横向き）でスイッチボックス１０に取り付ける場合に、ねじ穴３０が位置するＡ点の左側近傍には、ねじ１６のねじシャフト部に対し径の大きなねじ頭部を挿通可能な大径の第１遊嵌穴２６ａを形成している。
When the cover plate 12 is attached to the switch box 10 in the first direction (the release hole 22 sideways), a screw having a diameter larger than that of the screw shaft portion of the screw 16 is near the left side of the point A where the screw hole 30 is located. A large-diameter first loose-fitting hole 26a through which the head can be inserted is formed.

また、カバープレート１２を第２の向き（レリーズ穴２２を縦向き）でスイッチボックス１０に取り付ける場合に、ねじ穴３０が位置するＢ点の左側近傍には、ねじ１６のねじシャフト部に対し径の大きなねじ頭部を挿通可能な大径の第２遊嵌穴２６ｂを形成している。なお、大径の第１遊嵌穴２６ａと第２遊嵌穴２６ｂを形成した円弧穴２４は、一種のダルマ穴ということもできる。
When the cover plate 12 is attached to the switch box 10 in the second direction (the release hole 22 is vertically oriented), the diameter of the screw 16 is near the left side of the point B where the screw hole 30 is located. A large-diameter second loose fitting hole 26b through which a large screw head can be inserted is formed. In addition, the circular arc hole 24 in which the large-diameter first loose fitting hole 26a and the second loose fitting hole 26b are formed can also be called a kind of dharma hole.

［ラッチ式レリーズを横向きとしたカバープレートの取付け］
図４は図１のスイッチボックス側に起立するねじに対するカバープレートの嵌め込みを示した説明図、図５は図４に続く位置合せと取付け固定を示した説明図、図６は図４のＸ−Ｘ断面について図４のカバープレート嵌め込みと図５の取付け固定を示した断面図である。なお、図４及び図５にあっては、位置関係を分かり易くするため、スイッチボックスとカバープレートのみを示している。 [Attaching the cover plate with the latch release facing sideways]
4 is an explanatory view showing the fitting of the cover plate to the screw standing on the switch box side of FIG. 1, FIG. 5 is an explanatory view showing the alignment and mounting fixation following FIG. 4, and FIG. 6 is an X- FIG. 6 is a cross-sectional view of the X cross section showing the cover plate fitting of FIG. 4 and the mounting and fixing of FIG. 5. In FIGS. 4 and 5, only the switch box and the cover plate are shown for easy understanding of the positional relationship.

スイッチボックス１０の開口部にカバープレート１２を取り付ける場合には、スイッチボックス１０の４箇所のねじ穴３０に、ねじ１６のねじシャフト部を少しだけねじ込み、ねじ頭部との間にカバープレート１２が入る十分な隙間を空けた状態でねじ１６を起立させる。 When the cover plate 12 is attached to the opening of the switch box 10, the screw shaft portion of the screw 16 is slightly screwed into the four screw holes 30 of the switch box 10, and the cover plate 12 is interposed between the screw heads. The screw 16 is erected with a sufficient clearance to enter.

この状態で、図４に示すように、ねじ穴３０に起立しているねじ１６（図示省略）のねじ頭部に、カバープレート１２の円弧穴２４に形成している大径の第１遊嵌穴２６ａが相対するように、カバープレート１２を斜めにして位置合せし、この状態でカバープレート１２の第１遊嵌穴２６ａにねじ１６のねじ頭部が入るようにカバープレート１２を嵌め込み、図６（Ａ）に示すように、スイッチボックス１０側に起立しているねじ１６にカバープレート１２を保持させる。 In this state, as shown in FIG. 4, a large-diameter first loose fit formed in the arc hole 24 of the cover plate 12 on the screw head of the screw 16 (not shown) standing in the screw hole 30. The cover plate 12 is obliquely aligned so that the holes 26a face each other, and in this state, the cover plate 12 is fitted so that the screw heads of the screws 16 are inserted into the first loose fitting holes 26a of the cover plate 12. As shown in FIG. 6 (A), the cover plate 12 is held by the screws 16 standing on the switch box 10 side.

続いて、図５に示すように、カバープレート１２を左回りに回動して、スイッチボックス１０の開口部に位置合せし、この状態でねじ１６をねじ穴３０に締め込むことで、図６（Ｂ）に示すように、スイッチボックス１０にカバープレート１２を取り付け固定する。 Subsequently, as shown in FIG. 5, the cover plate 12 is rotated counterclockwise to align with the opening of the switch box 10, and in this state, the screw 16 is tightened into the screw hole 30. As shown in (B), the cover plate 12 is attached and fixed to the switch box 10.

このようにスイッチボックス１０に隙間を空けて起立したねじ１６にカバープレート１２を嵌め込んで保持させる作業と、続いてスイッチボックス１０に起立したねじ１６に回動自在に保持しているカバープレート１２を位置決めして、ねじ１６をドライバを使用して締め付け固定する作業とを分離して行うことができ、従来のように、カバープレートの円弧穴をスイッチボックスのねじ穴に合せながらドライバによるねじを締め付け固定するという煩雑で熟練を要する作業を不要とし、裏面に取り付けたラッチ式レリーズ１４に信号線を接続した状態でカバープレート１２をスイッチボックス１０に簡単且つ容易に取付け固定することを可能とし、作業効率を高めることができる。
In this way, the cover plate 12 is fitted and held on the screws 16 that stand up with a gap in the switch box 10, and then the cover plates 12 that are rotatably held by the screws 16 that stand on the switch box 10. Can be performed separately from the work of tightening and fixing the screw 16 using a screwdriver, and the screw by the screwdriver can be adjusted while aligning the arc hole of the cover plate with the screw hole of the switch box as before. It is possible to easily and easily attach and fix the cover plate 12 to the switch box 10 with the signal line connected to the latch release 14 attached to the back surface, without the complicated and skillful work of tightening and fixing. Work efficiency can be increased.

［ラッチ式レリーズを縦向きとしたカバープレートの取付け］
図７はラッチ式レリーズを縦向きとした実施形態を示した説明図、図８は図７のスイッチボックス側に起立したねじに対するカバープレートの嵌め込みを示した説明図、図９は図８に続く位置合せと取付け固定を示した説明図である。なお、図８及び図９にあっては、位置関係を分かり易くするため、スイッチボックスとカバープレートのみを示している。 [Attaching the cover plate with the latch release in the vertical orientation]
FIG. 7 is an explanatory view showing an embodiment in which the latch release is vertically oriented, FIG. 8 is an explanatory view showing the fitting of the cover plate to the screw erected on the switch box side of FIG. 7, and FIG. 9 follows FIG. It is explanatory drawing which showed position alignment and attachment fixation. 8 and 9, only the switch box and the cover plate are shown for easy understanding of the positional relationship.

図７に示すように、本実施形態では、スイッチボックス１０に対し、ラッチ式レリーズ１４を図示で縦向きとなるように、カバープレート１２を位置決めして、４本のねじ１６でねじ込み固定している。 As shown in FIG. 7, in this embodiment, the cover plate 12 is positioned with respect to the switch box 10 so that the latch release 14 is vertically oriented in the drawing, and is fixed by screwing with four screws 16. Yes.

図７のようにラッチ式レリーズ１４を縦置きでスイッチボックス１０の開口部にカバープレート１２を取付け固定する場合には、まず図８に示すスイッチボックス１０の４箇所のねじ穴３０に、ねじ１６（図示省略）のねじシャフト部を少しだけねじ込み、ねじ頭部との間にカバープレート１２が入る十分な隙間を空けた状態でねじ１６を起立させる。 As shown in FIG. 7, when the cover release plate 12 is mounted and fixed to the opening of the switch box 10 by placing the latch release 14 vertically, first, screws 16 are inserted into the four screw holes 30 of the switch box 10 shown in FIG. The screw shaft portion (not shown) is screwed in a little, and the screw 16 is erected in a state where there is a sufficient clearance for the cover plate 12 to enter between the screw head portion.

続いて、図４の横向き配置の場合に対し、カバープレート１２を９０°回転し、この状態で図８に示すように、ねじ穴３０に起立しているねじ１６（図示省略）のねじ頭部に、カバープレート１２の円弧穴２４に形成している大径の第２遊嵌穴２６ｂが相対するように、カバープレート１２を斜めにして位置合せし、この状態でカバープレート１２の第２遊嵌穴２６ｂにねじ１６のねじ頭部が入るようにカバープレート１２を嵌め込み、スイッチボックス１０側に起立しているねじ１６にカバープレート１２を保持させる。 Subsequently, the cover plate 12 is rotated by 90 ° with respect to the lateral arrangement shown in FIG. 4, and the screw head of the screw 16 (not shown) standing in the screw hole 30 in this state as shown in FIG. The cover plate 12 is obliquely aligned so that the large-diameter second loose-fitting hole 26b formed in the circular arc hole 24 of the cover plate 12 faces each other. The cover plate 12 is fitted so that the screw head of the screw 16 enters the fitting hole 26b, and the cover plate 12 is held by the screw 16 standing on the switch box 10 side.

続いて、図９に示すように、カバープレート１２を左回りに回動して、スイッチボックス１０の開口部に位置合せし、この状態でねじ１６をねじ穴３０に締め込むことで、図７に示したように、スイッチボックス１０にカバープレート１２を取り付け固定する。 Subsequently, as shown in FIG. 9, the cover plate 12 is rotated counterclockwise to align with the opening of the switch box 10, and in this state, the screw 16 is tightened into the screw hole 30. The cover plate 12 is attached and fixed to the switch box 10 as shown in FIG.

このようにラッチ式レリーズ１４を縦置きでスイッチボックス１０の開口部にカバープレート１２を取り付ける場合にも、スイッチボックス１０に隙間を空けて起立したねじ１６に対するカバープレート１０を嵌め込んで保持させる作業と、続いてスイッチボックス１０に起立したねじ１６に回動自在に保持しているカバープレート１２を位置決めして、ねじ１６をドライバを使用して締め付け固定する作業とを分離して行うことができ、従来のように、カバープレートの円弧穴をスイッチボックスのねじ穴に合せながらドライバによるねじを締め付け固定するという煩雑で熟練を要する作業を不要とし、裏面に取り付けたラッチ式レリーズ１４に信号線を接続したカバープレート１２をスイッチボックス１０に簡単且つ容易に取付け固定することを可能とし、作業効率を高めることができる。 In this way, even when the latch release 14 is installed vertically and the cover plate 12 is attached to the opening of the switch box 10, the cover plate 10 is fitted into the switch box 10 and held up with a gap therebetween. Then, the operation of positioning the cover plate 12 rotatably held by the screws 16 standing on the switch box 10 and tightening and fixing the screws 16 using a screwdriver can be performed separately. As in the past, the complicated and skillful work of tightening and fixing the screw by the driver while aligning the arc hole of the cover plate with the screw hole of the switch box is unnecessary, and the signal line is connected to the latch release 14 attached to the back surface. The connected cover plate 12 is simply and easily attached and fixed to the switch box 10. It possible, it is possible to enhance the working efficiency.

［カバープレートに遊嵌穴付きの円弧穴を二重に形成した実施形態］
図１０は遊嵌穴付きの円弧穴を二重に形成したカバープレートの実施形態を示した説明図、図１１は図１０の外周側の遊嵌穴付きの円弧穴を使用して取付け固定するスイッチボックスを示した説明図である。 [Embodiment in which double circular arc holes with loose fitting holes are formed in the cover plate]
FIG. 10 is an explanatory view showing an embodiment of a cover plate in which circular arc holes with loose fitting holes are formed in duplicate, and FIG. 11 is attached and fixed using the circular arc holes with loose fitting holes on the outer peripheral side of FIG. It is explanatory drawing which showed the switch box.

図１０に示すように、本実施形態のカバープレート１２は、内側に第１遊嵌穴２６ａと第２遊嵌穴２６ｂを設けた円弧穴２４を４箇所に分けて環状に設けており、この点は図３のカバープレート１２と同じであるが、更に、その外側に、単一の遊嵌穴４０を設けた円弧穴３８を４箇所に分けて環状に設けている。 As shown in FIG. 10, the cover plate 12 of the present embodiment is provided with an annular hole 24 provided in an annular shape with four arc holes 24 provided with a first loose hole 26a and a second loose hole 26b on the inside. The point is the same as that of the cover plate 12 of FIG. 3, but further, an arc hole 38 provided with a single loose-fitting hole 40 is provided in an annular shape on the outer side in four places.

カバープレート１２の外側に設けた円弧穴３８は、図１１に示すスイッチボックス１０への取り付けを予定している。図１１に示すスイッチボックス１０は、開口部の張出部１８に、ねじ穴中心を図示の横幅Ｌ３と縦幅Ｌ４としてねじ穴３０を４箇所に設けており、この横幅Ｌ３，縦幅Ｌ４は規格で決まっており、例えばＬ３＝７０ｍｍ、Ｌ４＝１０５ｍｍとしている。 An arc hole 38 provided outside the cover plate 12 is scheduled to be attached to the switch box 10 shown in FIG. The switch box 10 shown in FIG. 11 is provided with four screw holes 30 on the overhanging portion 18 of the opening with the center of the screw hole as illustrated in the horizontal width L3 and the vertical width L4. The horizontal width L3 and the vertical width L4 are as follows. For example, L3 = 70 mm and L4 = 105 mm.

スイッチボックス１０のねじ穴３０に対応したカバープレート１２の４箇所には、ねじ１６のねじ部を挿通可能な円弧穴３８を形成している。 Arc holes 38 through which the screw portions of the screws 16 can be inserted are formed at four locations on the cover plate 12 corresponding to the screw holes 30 of the switch box 10.

カバープレート１２の円弧穴３８とスイッチボックス１０のねじ穴３０との関係は、レリーズ穴２２を図示で横向きとした第１の向きでカバープレート１２をスイッチボックス１０に取付ける場合、図１０に示す円弧穴３８の中のＣ点がねじ穴３０の中心位置となる。 The relationship between the arc hole 38 of the cover plate 12 and the screw hole 30 of the switch box 10 is shown in FIG. 10 when the cover plate 12 is attached to the switch box 10 in the first orientation in which the release hole 22 is laterally illustrated. The point C in the hole 38 is the center position of the screw hole 30.

また、レリーズ穴２２を図示の横向きに対し９０°回転して縦向きとした第２の向きでカバープレート１２をスイッチボックス１０に取付ける場合、図１０に示す円弧穴３８の中のＤ点がねじ穴３０の中心位置となる。 Further, when the cover plate 12 is attached to the switch box 10 in the second direction in which the release hole 22 is rotated 90 ° with respect to the horizontal direction shown in the drawing and the vertical direction, the point D in the arc hole 38 shown in FIG. It becomes the center position of the hole 30.

ここで円弧穴３８に対する第１の向きのねじ穴中心位置のＣ点と第２の向きのねじ穴中心位置のＤ点は、円弧穴３８の両側に位置することから、その間にねじ１６のねじシャフト部に対し径の大きなねじ頭部を挿通可能な大径の遊嵌穴４０を形成している。
Wherein point C of the screw hole center position of the first orientation relative to the arc hole 38 and the point D of the screw hole center position of the second orientation, since it is located on either side of the arc hole 38, the screw 16 during the screw A large-diameter loosely fitting hole 40 into which a screw head having a large diameter can be inserted into the shaft portion is formed.

このカバープレート１２に単一の遊嵌穴４０を設けた円弧穴３８を形成した場合についても、スイッチボックス１０の開口部にカバープレート１２を取り付ける場合、スイッチボックス１０に隙間を空けて起立したねじ１６に対するカバープレート１２を嵌め込んで保持させる作業と、続いてスイッチボックス１０に起立したねじ１６に回動自在に保持しているカバープレート１２を位置決めして、ねじ１６をドライバを使用して締め付け固定する作業とを分離して行うことができ、従来のように、カバープレートの円弧穴をスイッチボックスのねじ穴に合せながらドライバによるねじを締め付け固定するという煩雑で熟練を要する作業を不要とし、裏面に取り付けたラッチ式レリーズ１４に信号線を接続したカバープレート１２をスイッチボックス１０に簡単且つ容易に取付け固定することを可能とし、作業効率を高めることができる。
Even when the circular arc hole 38 having a single loose-fitting hole 40 is formed in the cover plate 12, when the cover plate 12 is attached to the opening of the switch box 10, a screw that stands up with a gap in the switch box 10. The cover plate 12 is fitted into and held with respect to the screw 16, and the cover plate 12 that is rotatably held by the screw 16 standing upright on the switch box 10 is then positioned, and the screw 16 is tightened using a screwdriver. It can be done separately from the work of fixing, and as before, the complicated and skillful work of tightening and fixing the screw by the driver while aligning the arc hole of the cover plate with the screw hole of the switch box is unnecessary, Switch the cover plate 12 with the signal line connected to the latch release 14 attached to the back. It possible to simply and easily attached and fixed to the box 10, it is possible to enhance the working efficiency.

また、カバープレート１２に円弧穴２４，３８を二重に設けたことで、図２と図１１に示したねじ穴の中心間隔の異なる２種類のスイッチボックス１０について、同じカバープレート１２を使用した取付けが選択的にできる。 Further, since the circular arc holes 24 and 38 are provided in the cover plate 12, the same cover plate 12 is used for the two types of switch boxes 10 having different center distances of the screw holes shown in FIGS. Installation can be done selectively.

［ラッチ式レリーズを横向き配置のみとする実施形態］
図１２はラッチ式レリーズを横向き配置のみとするカバープレートを用いた実施形態を示した説明図であり、図１２（Ａ）に正面を示し、図１２（Ｂ）に図１２（Ａ）のＸ−Ｘ断面を示す。 [Embodiment in which latch-type release is arranged only in landscape orientation]
FIG. 12 is an explanatory view showing an embodiment using a cover plate in which the latch release is only arranged sideways. FIG. 12 (A) shows a front view, and FIG. 12 (B) shows an X in FIG. 12 (A). -X shows a cross section.

図１２に示すように、本実施形態のカバープレート１２は、図２に示したねじ穴中心位置の横幅Ｌ１，縦幅Ｌ２のスイッチボックス１０に対し、ラッチ式レリーズを横向きにのみ配置可能とする円弧穴２４を形成しており、このため図３に示したカバープレート１２の円弧穴２４のねじ穴中心位置を示すＢ点側の半分を除き、ねじ穴中心位置を示すＡ点側の半分を残した円弧形状としており、ねじ頭部を挿通する遊嵌穴も、ねじ穴中心位置を示すＡ点側の第１遊嵌穴２６ａのみとしている。 As shown in FIG. 12, the cover plate 12 of the present embodiment enables the latch release to be arranged only in the horizontal direction with respect to the switch box 10 having the horizontal width L1 and the vertical width L2 at the screw hole center position shown in FIG. An arc hole 24 is formed. For this reason, a half on the B point side indicating the screw hole center position of the arc hole 24 of the cover plate 12 shown in FIG. The remaining arc has a circular shape, and the loose fitting hole through which the screw head is inserted is only the first loose fitting hole 26a on the point A side indicating the screw hole center position.

このようなカバープレート１２の構造により、スイッチボックス１０に対しラッチ式レリーズ１４を図示で横向きのみとした取付け固定を可能とする。
Such a structure of the cover plate 12 makes it possible to mount and fix the latch release 14 to the switch box 10 only in the horizontal direction in the figure.

一方、スイッチカバー１０に対しラッチ式レリーズ１４を図示で縦向きのみとした取付け固定を可能とする場合には、図３に示したカバープレート１２の円弧穴２４のねじ穴中心位置を示すＡ点側の半分を除き、ねじ穴中心位置を示すＢ点側の半分を残した円弧形状とし、ねじ頭部を挿通する遊嵌穴も、ねじ穴中心位置を示すＢ点側の第２遊嵌穴２６ｂのみとすれば良い。 On the other hand, when the latch release 14 can be mounted and fixed on the switch cover 10 only in the vertical direction in the drawing, the point A indicating the screw hole center position of the arc hole 24 of the cover plate 12 shown in FIG. The second loose-fitting hole on the B point side showing the screw hole center position is also an arc shape that leaves the half on the B point side indicating the screw hole center position except for the half on the side, Only 26b may be used.

［カバープレートを横異動して位置決めする取付け構造の実施形態］
図１３はカバープレートを横移動して取付け固定する実施形態を示した説明図である。 [Embodiment for mounting structure in which cover plate is moved laterally and positioned]
FIG. 13 is an explanatory view showing an embodiment in which the cover plate is moved laterally and fixed.

図１３に示すように、本実施形態のカバープレート１２は、スイッチボックス１０に第１の向き（レリーズ穴２２を横向き）で取付ける場合に、スイッチボックス１０の４箇所のねじ穴に嵌め入れるねじ１６のねじシャフト部を挿通可能な横向きの第１の長穴４２ａを４箇所に形成すると共に、第１の長穴４２ａの各々に、ねじ１６のねじシャフト部に対し径の大きなねじ頭部を挿通可能な大径の遊嵌穴４４ａを形成している。
As shown in FIG. 13, the cover plate 12 of the present embodiment has screws 16 that are fitted into the four screw holes of the switch box 10 when the switch plate 10 is attached to the switch box 10 in the first direction (the release holes 22 are laterally oriented). The transverse first elongated holes 42a through which the screw shaft portions of the screws 16 can be inserted are formed at four locations, and the screw heads having a larger diameter than the screw shaft portions of the screws 16 are inserted into the first elongated holes 42a. A possible large-diameter loose fitting hole 44a is formed.

また、カバープレート１２は、スイッチボックス１０に第１の向きに対し９０度回転した第２の向き（レリーズ穴２２を縦向き）で取り付ける場合に、スイッチボックス１０の４箇所のねじ穴に嵌め入れるねじ１６のねじシャフト部を挿通可能な横向きの第２の長穴４２ｂ（図示の第１の向きでは縦向きであるが、第２の向きでは横向きとなる）を４箇所に形成すると共に、第２の長穴４２ｂの各々に、ねじ１６のねじシャフト部に対し径の大きなねじ頭部を挿通可能な大径の遊嵌穴４４ｂを形成している。

Further, when the cover plate 12 is attached to the switch box 10 in the second direction rotated 90 degrees with respect to the first direction (the release hole 22 is vertically oriented), the cover plate 12 is fitted into the four screw holes of the switch box 10. The laterally elongated second long holes 42b (which are vertically oriented in the first orientation shown in the figure but laterally oriented in the second orientation) that can be inserted through the screw shaft portion of the screw 16 are formed at four locations. Each of the two long holes 42b is formed with a large-diameter loose fitting hole 44b through which a screw head having a large diameter can be inserted into the screw shaft portion of the screw 16 .

それ以外の構成は図１の実施形態と同様である。また、なお、大径の遊嵌穴４４ａ，４４ｂを形成した第１の長穴４４及び第２の長穴４２ｂは、ダルマ穴ということもできる。 The other configuration is the same as that of the embodiment of FIG. In addition, the 1st long hole 44 and the 2nd long hole 42b which formed the large diameter loose fitting holes 44a and 44b can also be called Dharma hole.

本実施例によれば、スイッチボックス１０の４箇所のねじ穴３０にねじ１６の先端をねじ込んで起立した状態で、カバープレート１２の第１の向きに対応した第１の長穴４２ａの遊嵌穴４４ａを位置合せして嵌め入れた後に、カバープレート１２を横移動により位置決めしてねじ止め固定することで、スイッチボックス１０に対しラッチ式レリーズ１４の向きを横向きで取付ける場合に、スイッチボックス１０に対するカバープレート１２の位置合せとねじ込みを別々の作業に分離でき、熟練を必要とすることなく、簡単且つ容易にスイッチボックス１０にカバープレート１２を取り付け固定することを可能とする。 According to the present embodiment, the first elongated hole 42 a corresponding to the first direction of the cover plate 12 is loosely fitted in the upright state with the tip of the screw 16 screwed into the four screw holes 30 of the switch box 10. After the holes 44a are aligned and fitted, the cover plate 12 is positioned by lateral movement and fixed with screws, so that when the latch release 14 is mounted sideways on the switch box 10, the switch box 10 Therefore, the cover plate 12 can be attached and fixed to the switch box 10 easily and easily without requiring skill.

［本発明の変形例］
上記の実施形態におけるカバープレートの大径の遊嵌穴を設けた円弧穴の配置は、カバープレートをねじ込み固定するスイッチボックスに設けたねじ穴の中心位置の横幅及び縦幅により決まるものであり、上記の実施形態に限定されない。 [Modification of the present invention]
The arrangement of the circular hole provided with the large-diameter loose fitting hole of the cover plate in the above embodiment is determined by the horizontal width and vertical width of the center position of the screw hole provided in the switch box for screwing and fixing the cover plate, The present invention is not limited to the above embodiment.

また、円弧穴に大径の遊嵌穴を２つ設けるか、１つ設けるかも、スイッチボックスに設けたねじ穴の中心位置の横幅及び縦幅により決まるものであり、上記の実施形態に限定されない。 Whether the arc hole has two large-diameter loose fitting holes or one is determined by the horizontal width and vertical width of the center position of the screw hole provided in the switch box, and is not limited to the above embodiment. .

また、上記の実施形態は、ラッチ式レリーズ装置を例にとるものであったが、適宜の器機を取り付けたカバープレートをスイッチボックスにねじ込み固定する適宜の装置についても、そのまま適用することができる。 In addition, the above-described embodiment is an example of a latch-type release device, but the present invention can also be applied as it is to an appropriate device for screwing and fixing a cover plate to which an appropriate device is attached to a switch box.

また、本発明はその目的と利点を損なうことのない適宜の変形を含み、更に上記の実施形態に示した数値による限定は受けない。
The present invention includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

１０：スイッチボックス
１２：カバープレート
１４：ラッチ式レリーズ
１６：ねじ
１８：張出部
２０：電線管接続口
２２：レリーズ穴
２４，３８：円弧穴
２６ａ：第１遊嵌穴
２６ｂ：第２遊嵌穴
３０：ねじ穴
３４：通し穴
３６：皿ねじ穴
４０：遊嵌穴 10: Switch box 12: Cover plate 14: Latch type release 16: Screw 18: Overhang 20: Conduit connection port 22: Release hole 24, 38: Arc hole 26a: First loose fitting hole 26b: Second loose fitting Hole 30: Screw hole 34: Through hole 36: Countersunk screw hole 40: Free fitting hole

Claims

In a latch-type release device in which a cover plate with a latch-type release is screwed and fixed to the opening of a switch box embedded in the wall surface where the fire door is installed.
The switch box is formed with screw holes at four locations of the opening,
The cover plate is formed with four arc holes through which screw portions of screws to be fitted into the four screw holes of the switch box can be inserted, and the cover plate is disposed in each of the arc holes in a first direction. When mounting with the screw head, a large-diameter first loose-fitting hole through which the screw head can be inserted and a second orientation rotated 90 degrees with respect to the first direction of the cover plate are inserted. Forming a possible large diameter second loose fit hole,
The first free-fit hole corresponding to the first direction of the cover plate or the second direction corresponding to the second direction of the cover plate in a state where the tip of the screw is screwed into the four screw holes of the switch box . the loosely fitted hole after fitted in aligned, the first orientation or Ratchi type release device, characterized in that it has an attachment structure for screwed rotated to the second orientation.

In a latch-type release device in which a cover plate with a latch-type release is screwed and fixed to the opening of a switch box embedded in the wall surface of the place where the fire door is installed.
The switch box, the screw holes formed at four positions of the opening,
The cover plate is formed with four arc holes into which screw portions of screws to be fitted into the four screw holes of the switch box can be inserted, and the head of the screw can be inserted into each of the arc holes. Forming a large-diameter loose-fitting hole,
With the tip of the screw screwed into the four screw holes of the switch box and standing up, the loose fitting hole is aligned and fitted in accordance with the first direction or the second direction of the cover plate . after the said first orientation or latching release device being characterized in that a mounting structure for screwed by rotating the second orientation.

In the latch type release device according to claim 1 or 2 ,
The switch box screw holes are formed at four locations inside the cover where the apexes of a predetermined rectangle inscribed in a circle of a predetermined radius centered on a diagonal intersection of a substantially square opening surface to which the cover plate is attached,
The latch release device according to claim 1, wherein the arc holes of the cover plate are formed at four locations that are part of the circle through which threaded portions of screws that fit into the four screw holes of the switch box can be inserted.

In a latch-type release device in which a cover plate with a latch-type release is screwed and fixed to the opening of a switch box embedded in the wall surface where the fire door is installed.
The switch box is formed with screw holes at four locations of the opening,
The cover plate is
When the switch box is mounted in the first direction, laterally long first elongated holes through which the screw portions of the screws to be fitted into the four screw holes of the switch box can be inserted are formed at the four positions. In the case of forming a large-diameter loosely fitting hole through which the head of the screw can be inserted into each of the long holes, and mounting in a second direction rotated 90 degrees with respect to the first direction, Longitudinal second elongated holes that can be inserted into the threaded portions of the screws to be inserted into the screw holes at four locations are formed at four locations, and a large-diameter that allows the head of the screw to be inserted into each of the second elongated holes. Form loose holes,
In the state where the tip end of the screw is screwed into the four screw holes of the switch box and stands upright, the first elongated hole corresponding to the first direction of the cover plate or the second fitting direction. A latch-type release device characterized by having an attachment structure in which the cover plate is positioned by lateral movement and screwed and fixed after the loose fitting holes of the corresponding second elongated holes are aligned and fitted.

In a latch-type release device in which a cover plate with a latch-type release is screwed and fixed to the opening of a switch box embedded in the wall surface where the fire door is installed.
The switch box is formed with screw holes at four locations of the opening,
The cover plate is
When the switch box is mounted in the first direction, the first elongated holes in the vertical direction through which the screw portions of the screws to be fitted into the four screw holes of the switch box can be inserted are formed at the four positions. In the case of forming a large-diameter loosely fitting hole into which the head portion of the screw can be inserted in each of the long holes and mounting in a second direction rotated by 90 degrees with respect to the first direction, A laterally long second long hole through which a threaded portion of a screw to be fitted into four screw holes can be inserted is formed at four positions, and a large diameter through which a screw head can be inserted into each of the second long holes. Form loose holes,
In the state where the tip end of the screw is screwed into the four screw holes of the switch box and stands upright, the first elongated hole corresponding to the first direction of the cover plate or the second fitting direction. A latch-type release device characterized by having a mounting structure in which the cover plate is positioned by vertical movement and screwed and fixed after the loose fitting holes of the corresponding second elongated holes are aligned and fitted.