JPS6017038Y2 - anti-theft device - Google Patents
anti-theft deviceInfo
- Publication number
- JPS6017038Y2 JPS6017038Y2 JP12783077U JP12783077U JPS6017038Y2 JP S6017038 Y2 JPS6017038 Y2 JP S6017038Y2 JP 12783077 U JP12783077 U JP 12783077U JP 12783077 U JP12783077 U JP 12783077U JP S6017038 Y2 JPS6017038 Y2 JP S6017038Y2
- Authority
- JP
- Japan
- Prior art keywords
- mounting
- screwdriver
- screw
- panel
- mounting holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Burglar Alarm Systems (AREA)
Description
【考案の詳細な説明】
本考案は、例えばインターホン等の電気機器の筐体に附
設する盗難防止装置に関するもので、簡単な機構で筐体
の盗難を有効に防止することを目的とするものである。[Detailed description of the invention] The present invention relates to an anti-theft device attached to the housing of an electrical device such as an intercom, and its purpose is to effectively prevent theft of the housing with a simple mechanism. be.
従来、例えばインターホンのドアホン子機の保持固定は
第１図に示すように、パネル１に底板２を取付け、パネ
ル１に設けた引っかけ部１ａをボックス３のそれに対応
する位置に設けた穴３ａに挿入し、かつパネル１に設け
た取付穴１ｂとそれに対応する取付ボス３ｂを取付ねじ
４で保持固定するものであった。Conventionally, for example, to hold and fix an intercom door phone handset, a bottom plate 2 is attached to a panel 1, and a hook 1a provided on the panel 1 is inserted into a hole 3a provided at a corresponding position in a box 3, as shown in FIG. The mounting hole 1b provided in the panel 1 and the corresponding mounting boss 3b are held and fixed with mounting screws 4.
しかしながら、このような構造では、ドライバーでねじ
４をはずすだけでパネルを取りはずすことが出来、かつ
ドアホン子機は戸外に設置されるので屋内にいる所有者
にはドアホン子機が盗難にあっても全く感知することが
できなかった。However, with this structure, the panel can be removed by simply removing the screws 4 with a screwdriver, and since the doorphone handset is installed outdoors, the owner who is indoors has no protection even if the doorbell handset is stolen. I couldn't detect it at all.
本考案は以上の欠点を除去し筐体がはずされようとする
場合には屋内で感知できるようにしたものであり、以下
第２図を用いてその一実施例を説明すると、１はパネル
で、ボックス４に突設された取付ボス４ａに対応する取
付穴１ａを有している。The present invention eliminates the above-mentioned drawbacks and makes it possible to detect indoors when the casing is about to be removed. An example of this will be explained below using Fig. 2. 1 is a panel. , has a mounting hole 1a corresponding to a mounting boss 4a protruding from the box 4.
２は呼出ボタンでスイッチ作動片バネ２ａを有しパネル
１に固定される。Reference numeral 2 denotes a call button, which has a switch actuation piece spring 2a and is fixed to the panel 1.
３は呼出スイッチで呼出ボタン２に対応し、かつリード
線３ａを通じて呼出回路に接続され接点を短絡させてリ
ード線３ａを短絡することにより呼出回路が動作するよ
うに構成されている。A call switch 3 corresponds to the call button 2 and is connected to the call circuit through a lead wire 3a, so that the call circuit is operated by shorting the contacts and shorting the lead wire 3a.
５，５′は接点バネで、パネル１をボックス４に固定す
る取付ねじ６の周囲に固定され、かつリード線５ａによ
って呼出回路に接続されている。Contact springs 5 and 5' are fixed around a mounting screw 6 that fixes the panel 1 to the box 4, and are connected to a calling circuit by a lead wire 5a.
８は取付ねじ６をはずすためのドライバーである。8 is a screwdriver for removing the mounting screw 6.
ここで、筐体を取りはずそうとしてドライバー７をパネ
ル１に設けである取付穴１ａに挿入し、取付ねじ６を取
りはずそうとすると、その際ドライバー７又はねじ６の
頭が接点バネ５，５′に接触し、両者間を短絡させるた
め接点バネ５，５′に接続させているリード線５ａによ
ってショート信号が呼出回路に流れて呼出回路が動作し
ドアホン子機及び屋内の親機に発振音が発生して筐体が
取りはずされようとしていることを屋内で感知でき盗難
を防止することが出来る。Here, when attempting to remove the housing by inserting the screwdriver 7 into the mounting hole 1a provided in the panel 1 and attempting to remove the mounting screw 6, the head of the screwdriver 7 or the screw 6 may 5' and connected to the contact springs 5 and 5' to short-circuit the two, a short signal flows to the calling circuit, which operates and oscillates to the door intercom handset and the indoor base unit. It is possible to detect indoors that the casing is about to be removed when a sound is generated, thereby preventing theft.
以上のように、本考案によれば筐体を取りはずそうとし
てドライバーを筐体に設けたねじ挿入用の取付孔に挿入
すれば、ただそれだけで警報音を発することになり、有
効に機器の盗難を防止することができる。As described above, according to the present invention, if a screwdriver is inserted into the screw insertion hole provided in the housing in an attempt to remove the housing, an alarm will be emitted simply by inserting the screwdriver into the screw insertion hole provided in the housing. Theft can be prevented.
そして、特にねじを弛め出したときには、そのねじの頭
が接点ばねに接触しながら回転し、両者間をセルフクリ
ーニングすることになり、接触ばねやねじの頭が多少酸
化していても、互いに対向する接触ばね間を上記ねじに
よって確実に短絡させることが出来るようになり、長年
に亘って有効に盗難を防止することができるという利点
を有する。Especially when a screw is loosened, the head of the screw rotates while contacting the contact spring, self-cleaning between the two, so even if the contact spring or the head of the screw is slightly oxidized, This has the advantage that it is possible to reliably short-circuit between the opposing contact springs using the screw, and that theft can be effectively prevented for many years.
第１図は従来のドアホン子機の構造を示す断面図、第２
図は本考案の一実施例における盗難防止装置の断面図で
ある。
１・・・・・・パネル、２・・・・・・呼出ボタン、３
・・・・・・呼出スイッチ、４・・・・・・ボックス、
５．５’・・・・・・接点バネ、６・・・・・・取付ね
じ、７・・・・・・ドライバー。Figure 1 is a sectional view showing the structure of a conventional door intercom handset;
The figure is a sectional view of an anti-theft device according to an embodiment of the present invention. 1...Panel, 2...Call button, 3
...Call switch, 4...Box,
5.5'...Contact spring, 6...Mounting screw, 7...Driver.
Claims (1)
取付孔に突出するように互いに対向する接点ばねを取付
け、上記取付孔にドライバーを挿入し、上記取付孔に挿
入された取付ねじを弛めようとしたとき、上記ドライバ
ー、上記取付ねじの頭等によって上記接点ばねが互いに
短絡し、上記接点ばねに接続された呼出回路が動作する
ように構成した盗難防止装置。Attach contact springs facing each other so that some of them protrude into the mounting holes in the mounting holes for inserting screws for mounting the casing, insert a screwdriver into the mounting holes, and insert the mounting screws into the mounting holes. When an attempt is made to loosen the contact spring, the contact springs are short-circuited to each other by the screwdriver, the head of the mounting screw, etc., and a calling circuit connected to the contact spring is activated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12783077U JPS6017038Y2 (en) | 1977-09-22 | 1977-09-22 | anti-theft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12783077U JPS6017038Y2 (en) | 1977-09-22 | 1977-09-22 | anti-theft device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5453389U JPS5453389U (en) | 1979-04-13 |
| JPS6017038Y2 true JPS6017038Y2 (en) | 1985-05-25 |
Family
ID=29090951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12783077U Expired JPS6017038Y2 (en) | 1977-09-22 | 1977-09-22 | anti-theft device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6017038Y2 (en) |
-
1977
- 1977-09-22 JP JP12783077U patent/JPS6017038Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5453389U (en) | 1979-04-13 |
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