JP3377036B2 - Anti-theft tag and door open alarm - Google Patents
Anti-theft tag and door open alarmInfo
- Publication number
- JP3377036B2 JP3377036B2 JP03146399A JP3146399A JP3377036B2 JP 3377036 B2 JP3377036 B2 JP 3377036B2 JP 03146399 A JP03146399 A JP 03146399A JP 3146399 A JP3146399 A JP 3146399A JP 3377036 B2 JP3377036 B2 JP 3377036B2
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- door
- soft magnetic
- magnetic material
- switch
- 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 - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、盗難を監視する物
品の無断持ち出しを報知するためのタグ及び装置に関す
る。更に詳しくは金属製物品上に取付けられる盗難防止
用タグ及び陳列ケースから扉を開放して内部の物品を無
断で持出すことを防止する扉開放警報装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tag and a device for notifying unauthorized removal of an article for monitoring theft. More specifically, the present invention relates to an anti-theft tag attached to a metal article and a door opening alarm device that opens a door from a display case to prevent an article from being taken out without permission.
【０００２】[0002]
【従来の技術】この種の盗難防止用タグとして、盗難監
視用の物品に取付けられ、電波発信装置からの特定周波
数の電波に共振する共振回路部を有する盗難防止用タグ
が知られている。共振回路部は絶縁性誘電体の薄膜の両
面にエッチング等により所定形状の導電性金属箔を形成
して構成され、導電性金属箔により渦巻状に形成された
誘導回路部分と、この誘導回路部分の渦巻状の中心部に
誘導回路部分に連続するコンデンサ回路部分の表面側平
面パターンとが形成される。一方、上記盗難監視用の物
品を販売する店の出入り口には送信アンテナと受信アン
テナとが互いに所定の間隔をあけて立設され、これらの
アンテナは制御部に電気的に接続される。制御部は共振
回路部で共振する周波数の電波を送信アンテナから送信
させるとともに、受信アンテナからの受信信号の信号レ
ベルを常にチェックするように構成される。更に制御部
の制御出力には警報を発するスピーカが接続される。2. Description of the Related Art As an anti-theft tag of this type, an anti-theft tag having a resonant circuit portion that is attached to an article for monitoring theft and resonates with a radio wave of a specific frequency from a radio wave transmission device is known. The resonant circuit part is constructed by forming a conductive metal foil of a predetermined shape on both sides of an insulating dielectric thin film by etching or the like, and an induction circuit part formed in a spiral shape by the conductive metal foil, and this induction circuit part. A surface side plane pattern of the capacitor circuit portion continuous with the induction circuit portion is formed in the spiral center portion of the. On the other hand, a transmitting antenna and a receiving antenna are erected at predetermined intervals at the entrance and exit of a store that sells the theft monitoring article, and these antennas are electrically connected to the control unit. The control unit is configured to cause the transmission antenna to transmit a radio wave having a frequency that resonates in the resonance circuit unit, and to constantly check the signal level of the reception signal from the reception antenna. Further, a speaker for issuing an alarm is connected to the control output of the control unit.
【０００３】このように構成された盗難防止用タグで
は、盗難を監視している物品が未清算のまま送信アンテ
ナ及び受信アンテナ間を通過しようとすると、送信アン
テナから送信された電波が盗難防止用の物品に取付けら
れたタグの共振回路部で共振するため、受信アンテナに
は受信レベルの変調された受信信号が受信される。この
結果、制御部はスピーカから警報を発し、未清算商品の
持ち出しをチェックでき、確実に盗難を監視することが
できるようになっている。しかし、この盗難防止用タグ
ではタグ自体が盗難監視用の物品から分離され、盗難監
視用の物品のみが未清算のまま送信アンテナ及び受信ア
ンテナ間を通過しても制御部がスピーカから警報を発す
ることはなく、盗難を防止できない不具合がある。In the anti-theft tag thus constructed, when an article whose theft is monitored tries to pass between the transmitting antenna and the receiving antenna without being cleared, the radio wave transmitted from the transmitting antenna is used for the anti-theft. Since it resonates in the resonance circuit portion of the tag attached to the article, the reception signal whose reception level is modulated is received by the reception antenna. As a result, the control unit can issue an alarm from the speaker, check the carry-out of unsettled products, and reliably monitor theft. However, in this anti-theft tag, the tag itself is separated from the article for theft monitoring, and even if only the article for theft monitoring passes between the transmitting antenna and the receiving antenna without being cleared, the control unit issues an alarm from the speaker. There is a problem that cannot prevent theft.
【０００４】この点を解消するために、従来盗難防止用
タグにタグが盗難監視用の物品から分離されたか否かを
検出する分離検知手段を設け、タグが盗難監視用の物品
から分離されたことを分離検知手段が検出すると、分離
検知手段の検出出力に基づいて分離報知部が報知音出力
手段を制御するように構成された盗難防止用タグが提案
されている（特開平８−１８５５８４）。この盗難防止
用タグに開示されている分離検知手段は、タグの物品へ
の取付面に突出する作動バーを有する取外し検出スイッ
チであり、この検出スイッチには電源とブザーが電気的
に接続される。この取外し検知スイッチと電源とブザー
により構成される回路が分離報知部であり、ブザーが報
知音出力手段である。タグを物品に取付けると、作動バ
ーが物品により押込まれて上記取外し検知スイッチがオ
フの状態になり、タグを物品から外すと、作動バーが突
出して取外し検知スイッチがオンするので、ブザーが鳴
動し、確実に盗難を監視することができるようになって
いる。In order to solve this point, a conventional anti-theft tag is provided with a separation detecting means for detecting whether or not the tag is separated from the article for theft monitoring, and the tag is separated from the article for theft monitoring. When this is detected by the separation detection means, a theft prevention tag is proposed in which the separation notification unit controls the notification sound output means based on the detection output of the separation detection means (JP-A-8-185584). . The separation detection means disclosed in this anti-theft tag is a removal detection switch having an operation bar protruding on the attachment surface of the tag to the article, and a power supply and a buzzer are electrically connected to this detection switch. . The circuit composed of the removal detection switch, the power source and the buzzer is the separation notification unit, and the buzzer is the notification sound output means. When the tag is attached to the article, the operation bar is pushed by the article to turn off the removal detection switch, and when the tag is removed from the article, the operation bar protrudes and the removal detection switch turns on, so the buzzer sounds. , Is able to reliably monitor theft.
【０００５】一方、盗難監視用の物品が例えば宝石、時
計などのように高価で比較的小さい場合には、外部から
内部を視認可能ないわゆる陳列ケースの内部にそれらを
収納している。顧客はその陳列ケースの外部から興味の
ある物品を見つけると販売員にその物品を確認したい旨
を告げる。販売員は顧客の要求により陳列ケースの扉を
開放して顧客の指示した物品のみをその陳列ケースから
取出すことにより盗難を防止している。また、このよう
な陳列ケースには盗難を防止する点で扉が無断開放され
た場合に警報を発する警報装置が設けられる。従来の警
報装置として陳列ケースの扉の無断開放を検出するセン
サがその陳列ケースに設けられ、そのセンサからの電気
信号を伝送するケーブルがそのセンサから他の監視室ま
で配線され、監視室の警報装置にそのケーブルが接続さ
れている。この警報装置では陳列ケースの扉が無断開放
されると監視室の警報装置が作動し、警備員が監視モニ
タ等の手段により盗難の有無を確認している。On the other hand, when the theft monitoring articles are expensive and relatively small, such as jewelry and watches, they are housed inside a so-called display case where the inside can be seen from the outside. When the customer finds an article of interest from outside the display case, he tells the salesperson that he wants to confirm the article. At the request of the customer, the salesperson prevents theft by opening the door of the display case and taking out only the article instructed by the customer from the display case. Further, such a display case is provided with an alarm device for issuing an alarm when the door is opened without permission in order to prevent theft. As a conventional alarm device, a sensor for detecting unauthorized opening of the door of the display case is provided in the display case, and a cable for transmitting an electric signal from the sensor is wired from the sensor to another monitoring room, and an alarm in the monitoring room is issued. The cable is connected to the device. In this alarm device, when the door of the display case is opened without permission, the alarm device in the monitoring room is activated, and the guard confirms the presence or absence of theft by means such as a monitoring monitor.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上述した盗難
防止用タグにおける分離検知手段では、作動バーがタグ
の物品への取付面から突出するため、例えばタグと物品
との間に剃刀等の刃を潜り込ませ、作動バーを作動させ
ることなくタグを物品から取外したような場合には検知
スイッチがオンすることはなく、盗難を有効に防止でき
ない不具合がある。 また、従来の扉開放警報装置で
は、事後的な盗難の有無を確認することはできるが、盗
難者の盗難行為を抑制させることはできない不具合があ
る。また、ケーブルを配線した警報装置ではそのケーブ
ルが予め切断された場合には警報が発しない問題点もあ
る。本発明の目的は、取付面が軟磁性体からなる盗難監
視用の物品からタグが分離されたか否かを確実に検出し
て警報を発する盗難防止用タグを提供することにある。
本発明の別の目的は、盗難監視用の物品が収納された陳
列ケースの扉が無断開放されたことを確実に検出して警
報を発する扉開放警報装置を提供することにある。However, in the above-mentioned separation detecting means in the anti-theft tag, since the operating bar projects from the attaching surface of the tag to the article, for example, a blade such as a razor is provided between the tag and the article. If the tag is removed from the article without the activation bar being operated, the detection switch will not turn on, and theft cannot be effectively prevented. Further, with the conventional door opening alarm device, it is possible to confirm the presence or absence of theft after the fact, but there is a problem that the theft act of a thief cannot be suppressed. In addition, there is a problem that an alarm device having a cable does not give an alarm when the cable is cut in advance. An object of the present invention is to provide an anti-theft tag that reliably detects whether or not the tag has been separated from an article for theft monitoring whose mounting surface is made of a soft magnetic material and issues an alarm.
Another object of the present invention is to provide a door opening alarm device that reliably detects that the door of a display case in which articles for theft monitoring are stored has been opened without permission and issues an alarm.
【０００７】[0007]
【課題を解決するための手段】請求項１に係る発明は、
図１及び図８に示すように、盗難監視用の物品１１の軟
磁性体部分１１ａに非磁性のケース１８が取付けられ、
特定周波数の電波に共振する共振回路部１４と、軟磁性
体部分１１ａに対向する永久磁石１９と、リードスイッ
チ１６と、スイッチ１６が閉じると警報を発する警報手
段１７とがケース１８に内蔵された盗難防止用タグであ
って、ケース１８の取付け状態で磁石１９と軟磁性体部
分１１ａとの間で主磁路が形成されてスイッチ１６が開
き、ケース１８の取外し状態で磁石１９とスイッチ１６
との間で警報用磁路が形成されてスイッチ１６が閉じる
ように構成されたことを特徴とする盗難防止用タグであ
る。この請求項１に係る盗難防止用タグでは、タグ１２
が取付けられた物品１１を店から無断で持出すと、送信
アンテナ１３から送信された電波をタグ１２の共振回路
部１４が拾って共振を起こして電波が共振回路部１４か
ら再放射される。この再放射された電波を受信アンテナ
が受信すると警報を発する。一方、ケース１８が物品１
１の軟磁性体部分１１ａから取外されると、磁石１９の
磁力によりリードスイッチ１６が閉じ、ケース１８に内
蔵された警報手段１７が警報を発する。The invention according to claim 1 is
As shown in FIGS. 1 and 8, a nonmagnetic case 18 is attached to the soft magnetic material portion 11a of the article 11 for theft monitoring,
A resonance circuit portion 14 that resonates with a radio wave of a specific frequency, a permanent magnet 19 that faces the soft magnetic material portion 11a, a reed switch 16, and an alarm means 17 that issues an alarm when the switch 16 is closed are incorporated in a case 18. The anti-theft tag is a tag for preventing theft, in which the main magnetic path is formed between the magnet 19 and the soft magnetic material part 11a when the case 18 is attached, and the switch 16 is opened.
The anti-theft tag is characterized in that a warning magnetic path is formed between the switch and the switch 16 so that the switch 16 is closed. In the theft prevention tag according to claim 1, the tag 12
When the article 11 attached with is taken out of the store without permission, the resonance circuit section 14 of the tag 12 picks up the radio wave transmitted from the transmission antenna 13 to cause resonance, and the radio wave is re-radiated from the resonance circuit section 14. When the receiving antenna receives this re-radiated radio wave, an alarm is issued. On the other hand, the case 18 is the article 1
When removed from the soft magnetic material part 11a of No. 1, the reed switch 16 is closed by the magnetic force of the magnet 19, and the alarm means 17 incorporated in the case 18 gives an alarm.
【０００８】請求項２に係る発明は、請求項１に係る発
明であって、図３及び図７に示すように、永久磁石１９
が第１永久磁石１９ａと第２永久磁石１９ｂからなり、
第１永久磁石１９ａのＳ極及び第２永久磁石１９ｂのＮ
極に基端がそれぞれ接着され物品１１の軟磁性体部分１
１ａに対向するケース１８内面にそれぞれ取付けられか
つリードスイッチ１６の第１及び第２リード片１６ａ，
１６ｂが所定の距離をあけて先端に接続された第１及び
第２鉄部２１ａ，２１ｂと、第１永久磁石１９ａのＮ極
及び第２永久磁石１９ｂのＳ極に連結するように接着さ
れた第３鉄部２２とを備える。The invention according to claim 2 is the invention according to claim 1, and as shown in FIG. 3 and FIG.
Consists of a first permanent magnet 19a and a second permanent magnet 19b,
The S pole of the first permanent magnet 19a and the N pole of the second permanent magnet 19b.
The soft magnetic material portion 1 of the article 11 in which the base ends are respectively bonded to the poles
The first and second reed pieces 16a of the reed switch 16 mounted on the inner surface of the case 18 facing the 1a,
16b is adhered so as to be connected to the first and second iron parts 21a and 21b, which are connected to the ends with a predetermined distance, and the N pole of the first permanent magnet 19a and the S pole of the second permanent magnet 19b. And a third iron part 22.
【０００９】物品１１の軟磁性体部分１１ａと第１及び
第２鉄部２１ａ，２１ｂとの間の距離をＬ1、軟磁性体
部分１１ａに対向する第１及び第２鉄部２１ａ，２１ｂ
のそれぞれの面積をＳ1、第１及び第２リード片１６
ａ，１６ｂと第１及び第２鉄部２１ａ，２１ｂとの間の
所定の距離をＬ2、第１及び第２リード片１６ａ，１６
ｂに対向する第１及び第２鉄部２１ａ，２１ｂのそれぞ
れの面積をＳ2とするとき、次式（１）の関係がある盗
難防止用タグである。（
Ｌ2／Ｓ2 ）＞ （Ｌ1／Ｓ1） …… （１）
なお、式（１）において好ましい値は以下の式（２）で
ある。（
Ｌ2／Ｓ2 ）＞ １０×（Ｌ1／Ｓ1） …… （２）
請求項２に係る発明では、永久磁石１９に第１及び第２
永久磁石１９ａ，１９ｂを使用し、そのＮ極及びＳ極を
第３鉄部２２により連結するので、永久磁石１９自体を
薄くすることにより、タグ全体の厚さを薄くする。第１
永久磁石１９ａのＳ極及び第２永久磁石１９ｂのＮ極に
基端がそれぞれ接着された第１及び第２鉄部２１ａ，２
１ｂの先端にリードスイッチ１６の第１及び第２リード
片１６ａ，１６ｂを所定の距離をあけて接続するので、
リードスイッチ１６を接続する所定の距離の調整及び第
１及び第２リード片１６ａ，１６ｂの接続が容易に行う
ことができる。更に、式（１）を満足することにより、
ケース１８が物品１１の軟磁性体部分１１ａから取外さ
れることに起因するリードスイッチ１６の閉じる動作を
確実に行わせることができる。The distance between the soft magnetic part 11a of the article 11 and the first and second iron parts 21a and 21b is L 1 , and the first and second iron parts 21a and 21b facing the soft magnetic part 11a are L 1 .
The area of each of S 1 and the first and second lead pieces 16
a, 16b and the first and second iron parts 21a, 21b by a predetermined distance L 2 , the first and second lead pieces 16a, 16
first and second iron parts 21a opposed to b, that of 21b
When the area of these is S 2 , it is a theft prevention tag having the relationship of the following expression (1). ( L 2 / S 2 ) > (L 1 / S 1 ) ... (1) In addition, a preferable value in the formula (1) is the following formula (2). ( L 2 / S 2 ) > 10 × (L 1 / S 1 ) ... (2) In the invention according to claim 2, the permanent magnet 19 has the first and second magnets.
Since the permanent magnets 19a and 19b are used and the N pole and the S pole are connected by the ferric iron portion 22, the thickness of the entire tag is reduced by making the permanent magnet 19 itself thin. First
First and second iron parts 21a, 2 whose base ends are respectively bonded to the S pole of the permanent magnet 19a and the N pole of the second permanent magnet 19b.
Since the first and second reed pieces 16a and 16b of the reed switch 16 are connected to the tip of 1b with a predetermined distance,
Adjustment of a predetermined distance for connecting the reed switch 16 and connection of the first and second lead pieces 16a, 16b can be easily performed. Further, by satisfying the equation (1),
The reed switch 16 can be reliably closed due to the case 18 being removed from the soft magnetic material portion 11a of the article 11.
【００１０】また、請求項１及び２に係る発明は、永久
磁石１９、又は第１永久磁石１９ａ、第２永久磁石１９
ｂの磁力を利用して警報を発するため、ケース１８の外
部より電磁石（図示せず）を用いて交流電流又は減衰す
る交番パルス電流を流すことにより永久磁石１９、又は
第１永久磁石１９ａ若しくは第２永久磁石１９ｂの少な
くとも一方を脱磁させ、物品１１への取付け時又は取付
けられた物品１１からの取外し時のタグ、若しくは正規
に料金を支払った物品１１に取付けられているタグの警
報手段１７による警報を防止することができる。Further, the invention according to claims 1 and 2 is such that the permanent magnet 19 or the first permanent magnet 19a and the second permanent magnet 19 are provided.
Since an alarm is issued by using the magnetic force of b, a permanent magnet 19 or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a, or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first permanent magnet 19a or the first or second permanent magnet 19a is used. (2) At least one of the permanent magnets 19b is demagnetized to alarm the tag 17 when attached to the article 11 or removed from the attached article 11, or the tag attached to the article 11 for which a regular fee has been paid. It is possible to prevent the alarm.
【００１１】また、上記電磁石の代りにケース１８の外
部より永久磁石（図示せず）を用い、永久磁石１９、又
は第１永久磁石１９ａ若しくは第２永久磁石１９ｂの少
なくとも一方の磁力を与える方法を変えることにより、
物品１１への取付け時又は取付けられた物品１１からの
取外し時のタグ、若しくは正規に料金を支払った物品１
１に取付けられているタグの警報手段１７による警報を
防止しても良い。更に、物品１１が軟磁性体で構成され
ていない場合には、軟磁性体からなる板、棒、箱その他
の物品をその物品１１に強固に張付けて軟磁性体部分１
１ａとすることにより上記発明の効果を得ることができ
る。In addition, instead of the electromagnet, a permanent magnet (not shown) is used from the outside of the case 18 to apply a magnetic force to the permanent magnet 19 or at least one of the first permanent magnet 19a and the second permanent magnet 19b. By changing
Tag when attached to or detached from article 11 or article 1 for which a regular fee has been paid
The alarm attached to the tag 1 may be prevented by the alarm means 17. Further, when the article 11 is not made of a soft magnetic material, a soft magnetic material such as a plate, a rod, a box or the like is firmly attached to the article 11 to softly soften the soft magnetic material portion 1.
The effect of the above-mentioned invention can be acquired by setting it as 1a.
【００１２】請求項３に係る発明は、請求項２に係る発
明であって、図３に示すように、第１及び第２鉄部２１
ａ，２１ｂの間に挿脱可能に軟磁性体からなる警報不作
動部材２４が設けられ、警報不作動部材２４の挿入状態
でケース１８が物品１１の軟磁性体部分１１ａから取外
されたときでも警報用磁路を遮断し、警報不作動部材２
４の離脱状態でケース１８が物品１１の軟磁性体部分１
１ａから取外されたときに警報用磁路を形成するように
構成された盗難防止用タグである。請求項３に係る発明
では、警報不作動部材２４を第１及び第２鉄部２１ａ，
２１ｂの間に店員が挿入することにより、物品１１への
取付け時又は取付けられた物品１１からの取外し時のタ
グ、若しくは正規に料金を支払った物品１１に取付けら
れているタグの警報手段１７による警報を防止する。The invention according to claim 3 is the invention according to claim 2, wherein, as shown in FIG. 3, the first and second iron parts 21 are
An alarm deactivating member 24 made of a soft magnetic material is provided between a and 21b so that the case 18 is removed from the soft magnetic material portion 11a of the article 11 with the alarm deactivating member 24 inserted. However, the alarm magnetic path is shut off, and the alarm inoperative member 2
4 in the detached state, the case 18 is the soft magnetic material portion 1 of the article 11.
The anti-theft tag is configured to form an alarm magnetic path when removed from 1a. In the invention according to claim 3, the alarm deactivating member 24 is provided to the first and second iron parts 21a,
By the clerk inserting between 21b, by the alarm means 17 of the tag attached to the article 11 or detached from the attached article 11 or the tag attached to the article 11 that paid the regular fee. Prevent alarms.
【００１３】また、図示しないが警報手段１７にケース
１８の外部より専用の鍵又はジグを用いて警報手段１７
の電気回路を接続／切断を繰返し行うことが可能なスイ
ッチを設けることにより、物品１１の取付時又は取付け
られた物品１１からの取外し時のタグ、若しくは正規に
料金を支払った物品１１に取付けられているタグの警報
手段１７による警報を防止しても良い。 Although not shown, the alarm means 17 is provided from the outside of the case 18 by using a dedicated key or jig for the alarm means 17.
By providing a switch capable of repeatedly connecting / disconnecting the electric circuit of, the tag can be attached to the article 11 when the article 11 is attached or detached from the attached article 11 or to the article 11 for which a regular fee has been paid. It is also possible to prevent the warning by the warning means 17 of the tag that is present .
【００１４】請求項４に係る発明は、図９に示すよう
に、扉４１が閉止するとき扉４１が当接する扉用枠４２
に非磁性のケース４８が取付けられ、ケース４８に対向
する閉止状態の扉４１が軟磁性体からなるか、又は扉４
１に軟磁性体４３が設けられ、閉止状態の扉４１の軟磁
性体４３に対向する永久磁石１９と、リードスイッチ１
６と、スイッチ１６が閉じると警報を発する警報手段１
７とがケース４８に内蔵され、扉４１の閉止状態で磁石
１９と軟磁性体４３との間で主磁路が形成されてスイッ
チ１６が開き、扉４１の開放状態で磁石１９とスイッチ
１６との間で警報用磁路が形成されてスイッチ１６が閉
じるように構成された扉開放警報装置である。The invention according to claim 4 is, as shown in FIG. 9, a door frame 42 with which the door 41 abuts when the door 41 is closed.
The non-magnetic case 48 is attached to the door, and the closed door 41 facing the case 48 is made of a soft magnetic material, or
1 is provided with a soft magnetic material 43, and the reed switch 1 and the permanent magnet 19 facing the soft magnetic material 43 of the door 41 in the closed state.
6 and alarm means 1 for issuing an alarm when the switch 16 is closed
7 is built in the case 48, the main magnetic path is formed between the magnet 19 and the soft magnetic body 43 when the door 41 is closed, the switch 16 is opened, and the magnet 19 and the switch 16 are opened when the door 41 is opened. The door opening alarm device is configured so that an alarm magnetic path is formed between them and the switch 16 is closed.
【００１５】請求項５に係る発明は、図１２に示すよう
に、扉用枠４２に当接して閉止する扉４１に扉用枠４２
に対向して非磁性のケース４８が取付けられ、扉用枠４
２が軟磁性体からなるか、又は扉用枠４２に軟磁性体が
設けられ、扉４１の閉止状態で扉用枠４２の軟磁性体に
対向する永久磁石１９と、リードスイッチ１６と、スイ
ッチ１６が閉じると警報を発する警報手段１７とがケー
ス４８に内蔵され、扉４１の閉止状態で磁石１９と軟磁
性体４１との間で主磁路が形成されてスイッチ１６が開
き、扉４１の開放状態で磁石１９とスイッチ１６との間
で警報用磁路が形成されてスイッチ１６が閉じるように
構成された扉開放警報装置である。この請求項４及び請
求項５に係る扉開放警報装置では、盗難者が扉４１を開
放すると、磁石１９と軟磁性体４３との間で形成されて
いた主磁路が絶たれ、永久磁石１９とリードスイッチ１
６との間で警報用磁路が形成される。警報用磁路が形成
されると磁石１９の磁力によりリードスイッチ１６が閉
じ、警報手段１７が警報を発する。According to a fifth aspect of the present invention, as shown in FIG. 12, the door frame 42 abuts on the door frame 42 and closes.
A non-magnetic case 48 is attached to face the door frame 4
2 is made of a soft magnetic material, or the soft magnetic material is provided on the door frame 42, and the permanent magnet 19 facing the soft magnetic material of the door frame 42 in the closed state of the door 41, the reed switch 16, and the switch. When the door 16 is closed, an alarm means 17 for issuing an alarm is built in the case 48, and when the door 41 is closed, a main magnetic path is formed between the magnet 19 and the soft magnetic material 41, and the switch 16 is opened to open the door 41. In the door open alarm device, an alarm magnetic path is formed between the magnet 19 and the switch 16 so that the switch 16 is closed in the open state. In the door open alarm device according to claims 4 and 5 , when the thief opens the door 41, the main magnetic path formed between the magnet 19 and the soft magnetic body 43 is cut off, and the permanent magnet 19 is released. And reed switch 1
An alarm magnetic path is formed between the alarm magnetic path 6 and the alarm magnetic path 6. When the alarm magnetic path is formed, the magnetic force of the magnet 19 closes the reed switch 16 and the alarm means 17 issues an alarm.
【００１６】請求項６に係る発明は、請求項４又は５に
係る発明であって、図１１及び図７に示すように、永久
磁石１９が第１永久磁石１９ａと第２永久磁石１９ｂか
らなり、第１永久磁石１９ａのＳ極及び第２永久磁石１
９ｂのＮ極に基端がそれぞれ接着され扉４１又は扉用枠
４２の軟磁性体４３に対向する前記ケース４８内面にそ
れぞれ取付けられかつリードスイッチ１６の第１及び第
２リード片１６ａ，１６ｂが所定の距離をあけて先端に
接続された第１及び第２鉄部２１ａ，２１ｂと、第１永
久磁石１９ａのＮ極及び第２永久磁石１９ｂのＳ極に連
結するように接着された第３鉄部２２とを備える。The invention according to claim 6 is the invention according to claim 4 or 5 , wherein, as shown in FIGS. 11 and 7, the permanent magnet 19 comprises a first permanent magnet 19a and a second permanent magnet 19b. , The S pole of the first permanent magnet 19a and the second permanent magnet 1
The base end is adhered to the N pole of 9b and is attached to the inner surface of the case 48 facing the soft magnetic material 43 of the door 41 or the door frame 42, and the first and second reed pieces 16a and 16b of the reed switch 16 are attached. The first and second iron parts 21a and 21b which are connected to the tip at a predetermined distance and the third pole which is bonded so as to be connected to the N pole of the first permanent magnet 19a and the S pole of the second permanent magnet 19b. And an iron part 22.
【００１７】扉４１又は扉用枠４２の軟磁性体４３と第
１及び第２鉄部２１ａ，２１ｂとの間の距離をＬ1、軟
磁性体４３に対向する第１及び第２鉄部２１ａ，２１ｂ
のそれぞれの面積をＳ1、第１及び第２リード片１６
ａ，１６ｂと第１及び第２鉄部２１ａ，２１ｂとの間の
所定の距離をＬ2、第１及び第２リード片１６ａ，１６
ｂに対向する第１及び第２鉄部２１ａ，２１ｂのそれぞ
れの面積をＳ2とするとき、次式（１）の関係がある扉
開放警報装置である。（
Ｌ2／Ｓ2 ）＞ （Ｌ1／Ｓ1） …… （１）
なお、式（１）において好ましい値は以下の式（２）で
ある。（
Ｌ2／Ｓ2 ）＞ １０×（Ｌ1／Ｓ1） …… （２）
請求項６に係る発明では、永久磁石１９に第１及び第２
永久磁石１９ａ，１９ｂを使用し、そのＮ極及びＳ極を
第３鉄部２２により連結するので、永久磁石１９自体を
薄くすることにより、ケース４８の厚さを薄くする。ま
た、式（１）を満足することにより、扉４１が開放され
たときにリードスイッチ１６の閉じる動作を確実に行わ
せることができる。The distance between the soft magnetic body 43 of the door 41 or the door frame 42 and the first and second iron portions 21a, 21b is L 1 , and the first and second iron portions 21a facing the soft magnetic body 43 are L 1 . , 21b
The area of each of S 1 and the first and second lead pieces 16
a, 16b and the first and second iron parts 21a, 21b by a predetermined distance L 2 , the first and second lead pieces 16a, 16
first and second iron parts 21a opposed to b, that of 21b
When the area of these is S 2 , it is a door opening alarm device having the relationship of the following expression (1). ( L 2 / S 2 ) > (L 1 / S 1 ) ... (1) In addition, a preferable value in the formula (1) is the following formula (2). ( L 2 / S 2 ) > 10 × (L 1 / S 1 ) ... (2) In the invention according to claim 6 , the permanent magnet 19 has the first and second portions.
Since the permanent magnets 19a and 19b are used and the N poles and the S poles thereof are connected by the ferric iron portion 22, the thickness of the case 48 is thinned by thinning the permanent magnet 19 itself. Further, by satisfying the expression (1), the reed switch 16 can be reliably closed when the door 41 is opened.
【００１８】請求項７に係る発明は、請求項６に係る発
明であって、図１１に示すように、第１及び第２鉄部２
１ａ，２１ｂの間に挿脱可能に軟磁性体からなる警報不
作動部材２４が設けられ、警報不作動部材２４の挿入状
態で扉４１の開放状態でも警報用磁路を遮断し、警報不
作動部材２４の離脱状態で４１の開放状態で警報用磁路
を形成するように構成された扉開放警報装置である。請
求項７に係る発明では、警報不作動部材２４を第１及び
第２鉄部２１ａ，２１ｂの間に店員が挿入することによ
り、顧客の要求によりその店員が扉４１を開放する際の
警報手段１７による警報を防止する。The invention according to claim 7 is the invention according to claim 6 , and as shown in FIG. 11, the first and second iron parts 2
An alarm deactivating member 24 made of a soft magnetic material is provided between 1a and 21b so that the alarm deactivating member 24 is cut off even when the alarm deactivating member 24 is inserted and the door 41 is open. The door opening alarm device is configured to form an alarm magnetic path when the member 24 is disengaged and when the member 24 is opened. In the invention according to claim 7 , the clerk inserts the alarm inactivating member 24 between the first and second iron parts 21a and 21b, so that the clerk can open the door 41 at the request of the customer. Prevent alarm by 17.
【００１９】また、図示しないが警報手段１７にケース
４８の外部より専用の鍵又はジグを用いて警報手段１７
の電気回路を接続／切断を繰返し行うことが可能なスイ
ッチを設けることにより、店員が扉４１を開放する際の
警報手段１７による警報を防止しても良い。 Although not shown, the alarm means 17 is provided from the outside of the case 48 by using a dedicated key or jig for the alarm means 17.
By providing a switch capable of repeatedly connecting / disconnecting the electric circuit of 1, the alarm by the alarm means 17 when the store clerk opens the door 41 may be prevented .
【００２０】請求項８に係る発明は、請求項４ないし７
いずれかに係る発明であって、図９及び図１２に示すよ
うに、扉４１又は扉用枠４２に設けられる軟磁性体４３
が鉄板である扉開放警報装置である。この請求項８に係
る扉開放警報装置では、扉４１又は扉用枠４２が非磁性
である場合であっても鉄板を設けることにより容易に軟
磁性体４３を設けることができる。The invention according to claim 8 relates to claims 4 to 7.
It is the invention which concerns on either, As shown in FIG.9 and FIG.12, the soft magnetic body 43 provided in the door 41 or the frame 42 for doors.
Is a door opening alarm device that is an iron plate. In the door open alarm device according to the eighth aspect , the soft magnetic body 43 can be easily provided by providing the iron plate even when the door 41 or the door frame 42 is non-magnetic.
【００２１】[0021]
【発明の実施の形態】次に本発明の盗難防止用タグに関
する実施の形態を図面に基づいて詳しく説明する。図１
に示すように、盗難監視用の物品１１に取付けられたタ
グ１２は送信アンテナ１３（図８）から送信された特定
周波数の電波に共振する共振回路部１４と、物品から取
外すと閉じるリードスイッチ１６と、このスイッチ１６
が閉じると警報を発する警報手段１７とが非磁性のケー
ス１８に内蔵される。物品１１はこの実施の形態では軟
磁性材料である鋼板製のケースに収納されたパソコン本
体等である。共振回路部１４は図示しない絶縁性基材シ
ートの一方の面に銅やアルミニウム等の導電性材料によ
りコイル部１４ａが形成され、このコイル部１４ａと電
気的に接続されたコンデンサ１４ｂとを有する。図示し
ないが、コイル部１４ａは絶縁導線を略正方形に渦巻き
状に巻回して絶縁性基材シートに貼付けることにより形
成され、或いは絶縁性基材シートに積層したアルミニウ
ム箔や銅箔等の導電性材料をエッチング法又は打抜き法
等により不要部分を除去して略正方形の渦巻き状に形成
される。なお、この共振回路部１４は物品１１の軟磁性
体部分１１ａに接近しすぎると特性が変化するので、十
分に距離をおくか、非導電性の軟磁性体を間に挿入する
かする必要がある。また、磁性体からなるコアの周囲に
コイルを巻いた構造としても良い。BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the antitheft tag of the present invention will be described in detail with reference to the drawings. Figure 1
As shown in FIG. 2, the tag 12 attached to the theft monitoring article 11 includes a resonance circuit section 14 that resonates with a radio wave of a specific frequency transmitted from a transmission antenna 13 (FIG. 8), and a reed switch 16 that closes when removed from the article. And this switch 16
The alarm means 17 for issuing an alarm when is closed is built in the non-magnetic case 18. The article 11 is a personal computer body or the like housed in a case made of a steel plate which is a soft magnetic material in this embodiment. The resonance circuit portion 14 has a coil portion 14a made of a conductive material such as copper or aluminum on one surface of an insulating base sheet (not shown), and has a capacitor 14b electrically connected to the coil portion 14a. Although not shown, the coil portion 14a is formed by spirally winding an insulative conductor into a substantially square shape and pasting it on an insulative base material sheet, or a conductive material such as aluminum foil or copper foil laminated on the insulative base material sheet. The unnecessary portion of the conductive material is removed by an etching method or a punching method to form a substantially square spiral shape. The characteristics of the resonance circuit portion 14 change when it is too close to the soft magnetic material portion 11a of the article 11, so it is necessary to keep a sufficient distance or to insert a non-conductive soft magnetic material therebetween. is there. Alternatively, a coil may be wound around a magnetic core.
【００２２】ケース１８内には永久磁石１９が設けら
れ、ケース１８が物品１１の軟磁性体部分１１ａに取付
けられた状態で磁石１９と物品の軟磁性体部分１１ａと
の間で破線で示す主磁路が形成されるように構成され
る。その一方、図２に示すように、ケース１８が物品の
軟磁性体部分１１ａから取外されて永久磁石１９と物品
の軟磁性体部分１１ａが離間すると永久磁石１９とリー
ドスイッチ１６との間で破線で示す警報用磁路が形成さ
れて磁石１９の磁力によりリードスイッチ１６が閉じる
ように構成される。図３に示すように、本実施の形態に
おける永久磁石１９は第１永久磁石１９ａと第２永久磁
石１９ｂからなり、第１永久磁石１９ａのＳ極及び第２
永久磁石１９ｂのＮ極に基端がそれぞれ接着された第１
及び第２鉄部２１ａ，２１ｂが、物品の軟磁性体部分１
１ａに対向するケース１８の内面にそれぞれ取付けられ
る。第１永久磁石１９ａのＮ極及び第２永久磁石１９ｂ
のＳ極には第３鉄部２２がこのＮ極とＳ極を連結するよ
うに接着される。A permanent magnet 19 is provided in the case 18, and in the state where the case 18 is attached to the soft magnetic material portion 11a of the article 11, a main portion shown by a broken line between the magnet 19 and the soft magnetic material portion 11a of the article. A magnetic path is formed. On the other hand, as shown in FIG. 2, when the case 18 is detached from the soft magnetic material portion 11a of the article and the permanent magnet 19 and the soft magnetic material portion 11a of the article are separated, the permanent magnet 19 and the reed switch 16 are separated from each other. An alarm magnetic path shown by a broken line is formed so that the reed switch 16 is closed by the magnetic force of the magnet 19. As shown in FIG. 3, the permanent magnet 19 in the present embodiment includes a first permanent magnet 19a and a second permanent magnet 19b, and the S pole and the second permanent magnet of the first permanent magnet 19a.
The first end in which the base ends are respectively bonded to the N poles of the permanent magnets 19b
And the second iron parts 21a and 21b are the soft magnetic material part 1 of the article.
It is attached to the inner surface of the case 18 facing the 1a. The N pole of the first permanent magnet 19a and the second permanent magnet 19b
The third iron part 22 is bonded to the S pole so as to connect the N pole and the S pole.
【００２３】図７に示すように、リードスイッチ１６は
それぞれ弾性を有する第１及び第２リード片１６ａ，１
６ｂの接点部分をガラス管１６ｃに不活性ガスとともに
封入したスイッチであって、磁束が第１及び第２リード
片１６ａ，１６ｂを通ると接点部分が互いに吸引するこ
とにより接触してリードスイッチ１６を閉じ、無磁束状
態で第１及び第２リード片１６ａ，１６ｂはその弾性に
より接点部分が離間するように構成される。図３、図５
及び図６に示すように、リードスイッチ１６の第１及び
第２リード片１６ａ，１６ｂは非磁性体であるプラスチ
ック２３を介して第１及び第２鉄部２１ａ，２１ｂの先
端に所定の距離をあけて接続され、ケース１８が物品の
軟磁性体部分１１ａから取外された状態で磁石１９とリ
ードスイッチ１６との間で警報用磁路が形成されて磁石
１９の磁力によりリードスイッチ１６が閉じるように構
成される。As shown in FIG. 7, the reed switch 16 has elastic first and second reed pieces 16a, 16a.
6b is a switch in which the contact portion of 6b is sealed in a glass tube 16c together with an inert gas, and when the magnetic flux passes through the first and second lead pieces 16a and 16b, the contact portions attract each other to come into contact with each other so that the reed switch 16 is formed. The contact portions of the first and second lead pieces 16a and 16b are closed and separated from each other in a closed state without magnetic flux. 3 and 5
Also, as shown in FIG. 6, the first and second reed pieces 16a and 16b of the reed switch 16 have a predetermined distance from the tips of the first and second iron parts 21a and 21b through the plastic 23 which is a non-magnetic material. An alarm magnetic path is formed between the magnet 19 and the reed switch 16 in a state where the reed switch 16 is opened and connected and the case 18 is removed from the soft magnetic material portion 11a of the article, and the reed switch 16 is closed by the magnetic force of the magnet 19. Is configured as follows.
【００２４】図１及び図３に示すように、警報手段１７
はブザー１７ａと電源であるボタン電池１７ｂとにより
構成され、ボタン電池１７ｂの一方の電極とブザー１７
ａの一方の端子が接続される。ボタン電池１７ｂの他方
の電極はリードスイッチ１６の第１リード片１６ａに接
続され、第２リード片１６ｂはブザー１７ａの他方の端
子が接続される。図２に示すように、リードスイッチ１
６が閉じるとボタン電池１７ｂとブザー１７ａは閉回路
を構成してブザー１７ａが鳴動して音による警報を発す
るように構成される。As shown in FIGS. 1 and 3, the alarm means 17
Is composed of a buzzer 17a and a button battery 17b which is a power source, and one electrode of the button battery 17b and the buzzer 17b.
One terminal of a is connected. The other electrode of the button battery 17b is connected to the first lead piece 16a of the reed switch 16, and the second lead piece 16b is connected to the other terminal of the buzzer 17a. As shown in FIG. 2, the reed switch 1
When 6 is closed, the button battery 17b and the buzzer 17a form a closed circuit, and the buzzer 17a sounds to issue a sound alarm.
【００２５】図３〜図６に示すように、ケース１８には
更に軟磁性体からなる警報不作動部材２４が移動可能に
設けられ、警報不作動部材２４は第１及び第２鉄部２１
ａ，２１ｂの間に挿脱可能に構成される。警報不作動部
材２４にはラックギヤ２４ａが形成され、ラックギヤ２
４ａに歯合する歯車２６ａが先端に固着された回転部材
２６が警報不作動部材２４側方のケース１８内部の図示
しない軸受に枢支される。回転部材２６の他端には鍵穴
２６ｂが形成され、鍵穴２６ｂに対向するケース１８に
は鍵挿入孔１８ａが形成される。回転部材２６が回転し
て歯車２６ａが回転すると警報不作動部材２４は移動し
て第１及び第２鉄部２１ａ，２１ｂの間に挿入又は離脱
するように構成される。警報不作動部材２４が第１及び
第２鉄部２１ａ，２１ｂの間に挿入すると、ケース１８
が物品の軟磁性体部分１１ａから取外されたときでも警
報不作動部材２４により磁路が形成されて警報用磁路を
遮断し、警報不作動部材２４が第１及び第２鉄部２１
ａ，２１ｂの間から離脱するとケース１８が物品の軟磁
性体部分１１ａから取外されたときにリードスイッチ１
６による警報用磁路を形成するように構成される。As shown in FIGS. 3 to 6, an alarm inactivating member 24 made of a soft magnetic material is movably provided on the case 18, and the alarm inactivating member 24 is provided in the first and second iron parts 21.
It can be inserted and removed between a and 21b. A rack gear 24a is formed on the alarm deactivating member 24, and the rack gear 2
The rotating member 26, to the tip of which a gear 26a meshing with 4a is fixed, is pivotally supported by a bearing (not shown) inside the case 18 on the side of the alarm deactivating member 24. A key hole 26b is formed at the other end of the rotating member 26, and a key insertion hole 18a is formed in the case 18 facing the key hole 26b. When the rotating member 26 rotates and the gear 26a rotates, the alarm deactivating member 24 moves and is inserted or removed between the first and second iron parts 21a and 21b. When the alarm deactivating member 24 is inserted between the first and second iron parts 21a and 21b, the case 18
Even when is removed from the soft magnetic material part 11a of the article, a magnetic path is formed by the alarm deactivating member 24 to shut off the alarm magnetic path, and the alarm deactivating member 24 causes the alarm deactivating member 24 to move.
When the case 18 is detached from the soft magnetic material portion 11a of the article when separated from the space between a and 21b, the reed switch 1
6 to form an alarm magnetic path.
【００２６】このように構成された盗難防止用タグの動
作を説明する。図８に示すように、タグ１２が取付けら
れた物品１１を店から無断で持出そうとして送信アンテ
ナ１３及び受信アンテナ２７間を通過すると、送信アン
テナ１３から送信された電波をタグ１２の共振回路部１
４が拾って共振を起こす。共振回路部１４が共振する
と、コイル部１４ａ（図１）の自己インダクタンスとコ
ンデンサ１４ｂ（図１）の容量により予め定められた周
波数の電波が共振回路部１４から再放射される。この再
放射された電波を受信アンテナ２７が受信すると、この
受信信号に基づいて制御部２８は料金を支払っていない
物品１１が無断で持出されることを検出するので、スピ
ーカ２９を鳴動して警報を発する。逆に正規に料金を支
払った場合には、店員が会計場所（図示せず）でタグ１
２に強い電波を放射して共振回路部１４のコンデンサ１
４ｂを破壊する。この結果、送信アンテナ１３及び受信
アンテナ２７間をその物品１１が通過しても、共振回路
部１４は共振しないので、制御部２８はスピーカ２９を
鳴動させない。The operation of the anti-theft tag thus configured will be described. As shown in FIG. 8, when the article 11 to which the tag 12 is attached passes through between the transmitting antenna 13 and the receiving antenna 27 in an attempt to take it out from the store without permission, the electric wave transmitted from the transmitting antenna 13 is transmitted to the resonant circuit of the tag 12. Part 1
4 picks up and causes resonance. When the resonance circuit section 14 resonates, the resonance circuit section 14 reradiates a radio wave having a frequency predetermined by the self-inductance of the coil section 14a (FIG. 1) and the capacitance of the capacitor 14b (FIG. 1). When the receiving antenna 27 receives the re-radiated radio wave, the control unit 28 detects that the article 11 for which the fee has not been paid is taken out without permission based on the received signal. Emit. On the contrary, if the fee is legally paid, the clerk at the checkout place (not shown) uses the tag 1
The capacitor 1 of the resonance circuit unit 14 radiates a strong radio wave to 2
Destroy 4b. As a result, even when the article 11 passes between the transmitting antenna 13 and the receiving antenna 27, the resonance circuit unit 14 does not resonate, so the control unit 28 does not cause the speaker 29 to ring.
【００２７】一方、タグ１２と物品１１との間に剃刀等
の刃を潜り込ませてタグ１２が盗難監視用の物品１１か
ら分離されると、磁石１９と物品の軟磁性体部分１１ａ
との間で形成されていた図１に示す主磁路が絶たれ、図
２に示すように永久磁石１９とリードスイッチ１６との
間で警報用磁路が形成される。警報用磁路が形成される
と磁石１９の磁力によりリードスイッチ１６が閉じ、警
報手段１７であるボタン電池１７ｂとブザー１７ａは閉
回路を構成してブザー１７ａが鳴動して音による警報が
発せられる。逆に正規に料金を支払った場合には、店員
が会計場所（図示せず）で警報用磁路を遮断し、その後
タグ１２が盗難監視用の物品１１から分離されても警報
手段１７であるブザー１７ａが鳴動することを防止す
る。On the other hand, when the tag 12 is separated from the theft monitoring article 11 by inserting a blade such as a razor between the tag 12 and the article 11, the magnet 19 and the soft magnetic material portion 11a of the article are separated.
The main magnetic path shown in FIG. 1 formed between the magnetic field and the magnetic field is cut off, and the magnetic path for alarm is formed between the permanent magnet 19 and the reed switch 16 as shown in FIG. When the alarm magnetic path is formed, the reed switch 16 is closed by the magnetic force of the magnet 19, and the button battery 17b and the buzzer 17a, which are the alarm means 17, constitute a closed circuit, and the buzzer 17a sounds to issue an alarm by sound. . On the contrary, when the fee is legally paid, even if the clerk shuts off the alarm magnetic path at the checkout place (not shown) and the tag 12 is separated from the theft monitoring article 11, the alarm means 17 remains. The buzzer 17a is prevented from ringing.
【００２８】警報用磁路の遮断は会計場所に保管されて
いる鍵３１（図３）により警報不作動部材２４を移動し
て第１及び第２鉄部２１ａ，２１ｂの間に挿入すること
により行われる。具体的には鍵３１をケース１８の鍵挿
入用孔１８ａを介して回転部材２６の鍵穴２６ｂに挿入
し、その鍵３１を回転させることにより回転部材２６を
回転させて警報不作動部材２４を移動させる。第１及び
第２鉄部２１ａ，２１ｂの間に警報不作動部材２４が挿
入すると、警報不作動部材２４により磁路が形成され警
報用磁路が遮断される。なお、上述した実施の形態では
警報手段１７をブザー１７ａと電源であるボタン電池１
７ｂとにより構成したが、図１及び図２の破線で示すよ
うに、蛍光を発する発光素子３２をブザー１７ａに並列
に設けて警報手段１７により音及び光の双方により警報
を発してもよく、蛍光のみにより警報を発しても良い。
また、警報手段１７により発せられる警報が図示しない
他の警報手段を駆動するための電波であってもよい。更
に、警報手段１７により発せられる警報は音及び電波の
双方、又は光及び電波の双方、若しくは音、光及び電波
の全てであってもよい。The alarm magnetic path is shut off by moving the alarm deactivating member 24 with the key 31 (FIG. 3) stored at the checkout place and inserting it between the first and second iron parts 21a and 21b. Done. Specifically, the key 31 is inserted into the key hole 26b of the rotary member 26 through the key insertion hole 18a of the case 18, and the key 31 is rotated to rotate the rotary member 26 and move the alarm deactivating member 24. Let When the alarm deactivating member 24 is inserted between the first and second iron parts 21a and 21b, the alarm deactivating member 24 forms a magnetic path and interrupts the alarm magnetic path. In the embodiment described above, the alarm means 17 is the buzzer 17a and the button battery 1 which is the power source.
7b, but as shown by the broken lines in FIGS. 1 and 2, a light emitting element 32 that emits fluorescence may be provided in parallel with the buzzer 17a, and the alarm means 17 may issue an alarm by both sound and light. The alarm may be issued only by fluorescence.
The alarm issued by the alarm means 17 may be a radio wave for driving another alarm means (not shown). Furthermore, the alarm issued by the alarm means 17 may be both sound and radio waves, both light and radio waves, or all sound, light and radio waves.
【００２９】次に本発明の扉開放警報装置に関する実施
の形態を図面に基づいて詳しく説明する。上述した実施
の形態と同一符号は同一部品を示し、繰返しての説明を
省略する。図９〜図１１に示すように、この実施の形態
における陳列ケースは、スライドすることにより陳列ケ
ースを開閉する非磁性体であるガラスからなる扉４１
と、この扉４１が閉止するときこの扉４１の端縁が当接
する扉用枠４２とを有する。扉用枠４２には非磁性のケ
ース４８が取付けられ、このケース４８に対向する閉止
状態の扉４１には鉄板からなる軟磁性体４３が設けられ
る。ケース４８には、閉止状態の扉４１の軟磁性体４３
に対向する永久磁石１９と、リードスイッチ１６と、こ
のスイッチ１６が閉じると警報を発する警報手段１７と
が内蔵される。Next, embodiments of the door opening alarm device of the present invention will be described in detail with reference to the drawings. The same reference numerals as those in the above-described embodiment indicate the same parts, and the repeated description will be omitted. As shown in FIGS. 9 to 11, the display case according to this embodiment has a door 41 made of glass, which is a non-magnetic material, which opens and closes the display case by sliding.
And a door frame 42 with which an edge of the door 41 abuts when the door 41 is closed. A non-magnetic case 48 is attached to the door frame 42, and a soft magnetic body 43 made of an iron plate is provided on the closed door 41 facing the case 48. The case 48 includes the soft magnetic body 43 of the door 41 in the closed state.
A permanent magnet 19 opposed to, a reed switch 16, and an alarm means 17 for issuing an alarm when the switch 16 is closed are incorporated.
【００３０】図９に示すように、扉４１が閉止状態でケ
ース４８は軟磁性体４３に対向し、磁石１９はその軟磁
性体４３との間で破線で示す主磁路が形成されるように
構成される。その一方、図１０に示すように、扉４１が
開放するとケース４８は軟磁性体４３から離間し、永久
磁石１９と軟磁性体４３が離間すると永久磁石１９とリ
ードスイッチ１６との間で破線で示す警報用磁路が形成
されて磁石１９の磁力によりリードスイッチ１６が閉じ
るように構成される。図１１に示すように、この実施の
形態におけるリードスイッチ１６の第１及び第２リード
片１６ａ，１６ｂは、非磁性体であるプラスチック２３
を介して第１及び第２鉄部２１ａ，２１ｂの先端に所定
の距離をあけて接続され、扉４１が開放されて永久磁石
１９と軟磁性体４３が離間すると、磁石１９とリードス
イッチ１６との間で警報用磁路が形成されて磁石１９の
磁力によりリードスイッチ１６が閉じるように構成され
る。As shown in FIG. 9, when the door 41 is closed, the case 48 faces the soft magnetic material 43, and the magnet 19 forms a main magnetic path shown by the broken line between the magnet 19 and the soft magnetic material 43. Is composed of. On the other hand, as shown in FIG. 10, when the door 41 is opened, the case 48 is separated from the soft magnetic body 43, and when the permanent magnet 19 and the soft magnetic body 43 are separated from each other, the case 48 is indicated by a broken line between the permanent magnet 19 and the reed switch 16. The alarm magnetic path shown is formed so that the reed switch 16 is closed by the magnetic force of the magnet 19. As shown in FIG. 11, the first and second reed pieces 16a and 16b of the reed switch 16 in this embodiment are made of a plastic 23 which is a non-magnetic material.
When the door 41 is opened and the permanent magnet 19 and the soft magnetic material 43 are separated from each other, they are connected to the tips of the first and second iron parts 21a and 21b with a space therebetween, and the magnet 19 and the reed switch 16 are separated from each other. An alarm magnetic path is formed between them, and the reed switch 16 is closed by the magnetic force of the magnet 19.
【００３１】このケース４８には更に軟磁性体からなる
警報不作動部材２４が第１及び第２鉄部２１ａ，２１ｂ
の間に挿脱可能に設けられ、警報不作動部材２４が第１
及び第２鉄部２１ａ，２１ｂの間に挿入すると、ケース
４８が軟磁性体４３から離間したときでも警報不作動部
材２４により磁路が形成されて警報用磁路を遮断し、警
報不作動部材２４が第１及び第２鉄部２１ａ，２１ｂの
間から離脱するとケース１８が軟磁性体４３から離間し
たときにリードスイッチ１６による警報用磁路を形成す
るように構成される。The case 48 is further provided with an alarm deactivating member 24 made of a soft magnetic material for the first and second iron parts 21a and 21b.
The alarm non-operation member 24 is provided between the
When inserted between the second iron parts 21a and 21b, even if the case 48 is separated from the soft magnetic body 43, a magnetic path is formed by the alarm non-operation member 24 to shut off the alarm magnetic path, and the alarm non-operation member. When 24 is separated from between the first and second iron parts 21a and 21b, the reed switch 16 forms an alarm magnetic path when the case 18 separates from the soft magnetic body 43.
【００３２】このように構成された扉開放警報装置の動
作を説明する。顧客はその陳列ケースの外部から興味の
ある物品を見つけると販売員にその物品を確認したい旨
を告げる。販売員は顧客の要求により陳列ケースから顧
客の指示した物品を取出す。この際に、販売員は所有す
る鍵３１（図１１）により警報不作動部材２４を移動し
て第１及び第２鉄部２１ａ，２１ｂの間に挿入する。具
体的には鍵３１をケース４８の鍵挿入用孔４８ａを介し
て回転部材２６の鍵穴２６ｂに挿入し、その鍵３１を回
転させることにより回転部材２６を回転させて警報不作
動部材２４を移動させる。第１及び第２鉄部２１ａ，２
１ｂの間に警報不作動部材２４が挿入すると、警報不作
動部材２４により磁路が形成され警報用磁路が遮断され
る。この状態で陳列ケースの扉を開放して顧客の指示し
た物品のみをその陳列ケースから取出す。顧客の要求に
より物品を取出した後に、販売員は扉４１を閉じて軟磁
性体４３を永久磁石１９に対向させ、この状態で鍵３１
を逆方向に回転させることにより回転部材２６を回転さ
せて警報不作動部材２４を第１及び第２鉄部２１ａ，２
１ｂの間から離脱させる。The operation of the door opening alarm device thus configured will be described. When the customer finds an article of interest from outside the display case, he tells the salesperson that he wants to confirm the article. The salesperson takes out the article instructed by the customer from the display case at the request of the customer. At this time, the salesperson moves the alarm non-operation member 24 with the key 31 (FIG. 11) owned and inserts it between the first and second iron parts 21a and 21b. Specifically, the key 31 is inserted into the key hole 26b of the rotary member 26 through the key insertion hole 48a of the case 48, and the key 31 is rotated to rotate the rotary member 26 and move the alarm deactivating member 24. Let First and second iron parts 21a, 2
When the alarm deactivating member 24 is inserted between 1b, the alarm deactivating member 24 forms a magnetic path and interrupts the alarm magnetic path. In this state, the door of the display case is opened, and only the article instructed by the customer is taken out from the display case. After taking out the article at the customer's request, the salesperson closes the door 41 to make the soft magnetic body 43 face the permanent magnet 19, and in this state, the key 31
Is rotated in the opposite direction to rotate the rotating member 26 to move the alarm inactivating member 24 to the first and second iron parts 21a, 2a.
Remove from between 1b.
【００３３】一方、陳列ケースに収納されている盗難監
視用の物品を盗難しようとする者が販売員が監視してい
ないときにその物品を持出そうとしてその扉４１を開放
すると、磁石１９と軟磁性体４３との間で形成されてい
た図９に示す主磁路が絶たれ、図１０に示すように永久
磁石１９とリードスイッチ１６との間で警報用磁路が形
成される。警報用磁路が形成されると磁石１９の磁力に
よりリードスイッチ１６が閉じ、警報手段１７であるボ
タン電池１７ｂとブザー１７ａは閉回路を構成してブザ
ー１７ａが鳴動して音による警報が発せられる。この警
報により販売員はその警報の発する箇所に注意を払うこ
とになり、盗難しようとしていた者はその警報により販
売員の注意が払われたことを認識してその盗難を断念す
る。On the other hand, when a person trying to steal the theft monitoring article stored in the display case opens the door 41 to take out the article when the salesperson is not watching it, the magnet 19 and The main magnetic path shown in FIG. 9 formed between the soft magnetic body 43 is cut off, and an alarm magnetic path is formed between the permanent magnet 19 and the reed switch 16 as shown in FIG. When the alarm magnetic path is formed, the reed switch 16 is closed by the magnetic force of the magnet 19, and the button battery 17b and the buzzer 17a, which are the alarm means 17, constitute a closed circuit, and the buzzer 17a sounds to issue an alarm by sound. . This alarm causes the sales person to pay attention to the part where the alarm is issued, and the person who is about to steal recognizes that the sales person has paid attention to the alarm and gives up the theft.
【００３４】なお、上述した実施の形態では扉４１に鉄
板からなる軟磁性体４３を設けたが、閉止状態でケース
４８に対向する扉４１自体が軟磁性体からなるものであ
れば、鉄板からなる軟磁性体４３を設ける必要はない。
また、上述した実施の形態では、扉４１が閉止するとき
扉４１が当接する扉用枠４２に非磁性のケース４８を取
付けたが、図１２及び図１３に示すように、ケース４８
は扉用枠４２に当接して閉止する扉４１に扉用枠４２に
対向して取付けてもよい。この場合であっても扉用枠４
２が軟磁性体からなるか又は扉用枠４２に軟磁性体を設
け、扉４１の閉止状態で扉用枠４２の軟磁性体に対向す
る永久磁石１９と、リードスイッチ１６と、スイッチ１
６が閉じると警報を発する警報手段１７とをケース４８
に内蔵し、扉４１の閉止状態で磁石１９と軟磁性体４１
との間で主磁路が形成されてスイッチ１６が開き、扉４
１の開放状態で磁石１９とスイッチ１６との間で警報用
磁路が形成されてスイッチ１６が閉じるように構成する
ことにより扉開放警報装置を得ることができる。In the above-described embodiment, the door 41 is provided with the soft magnetic material 43 made of an iron plate. However, if the door 41 itself facing the case 48 in the closed state is made of a soft magnetic material, it is made of an iron material. It is not necessary to provide the soft magnetic material 43.
Further, in the above-described embodiment, the non-magnetic case 48 is attached to the door frame 42 with which the door 41 abuts when the door 41 is closed. However, as shown in FIGS.
May be attached to the door 41 that abuts and closes the door frame 42 so as to face the door frame 42. Even in this case, the door frame 4
2 is made of a soft magnetic material or a soft magnetic material is provided on the door frame 42, and the permanent magnet 19 facing the soft magnetic material of the door frame 42 in the closed state of the door 41, the reed switch 16, and the switch 1
Case 48 with alarm means 17 for issuing an alarm when 6 is closed
Built in the magnet 19 and the soft magnetic material 41 when the door 41 is closed.
The main magnetic path is formed between the switch 16 and the switch 16, and the door 4
A door opening alarm device can be obtained by forming an alarm magnetic path between the magnet 19 and the switch 16 so that the switch 16 is closed in the open state of 1.
【００３５】更に、上述した実施の形態では警報手段１
７をブザー１７ａと電源であるボタン電池１７ｂとによ
り構成したが、図９、図１０、図１２及び図１３の破線
で示すように、蛍光を発する発光素子３２をブザー１７
ａに並列に設けて警報手段１７により音及び光の双方に
より警報を発してもよく、蛍光のみにより警報を発して
も良い。また、警報手段１７により発せられる警報が図
示しない他の警報手段を駆動するための電波であっても
よい。更に、警報手段１７により発せられる警報は音及
び電波の双方、又は光及び電波の双方、若しくは音、光
及び電波の全てであってもよい。Further, in the above embodiment, the alarm means 1
7 is composed of a buzzer 17a and a button battery 17b which is a power source. As shown by the broken lines in FIGS. 9, 10, 12 and 13, the buzzer 17 has a light emitting element 32 that emits fluorescence.
The alarm may be provided in parallel with a and the alarm means 17 may issue an alarm by both sound and light, or may be issued only by fluorescence. The alarm issued by the alarm means 17 may be a radio wave for driving another alarm means (not shown). Furthermore, the alarm issued by the alarm means 17 may be both sound and radio waves, both light and radio waves, or all sound, light and radio waves.
【００３６】[0036]
【実施例】次に本発明の実施例を詳しく説明する。
＜実施例１＞
図４〜図６に示すように、厚さ２ｍｍ、幅が５ｍｍ、長
さが１１ｍｍの等方性バリウムフェライトを用いた第１
及び第２永久磁石１９ａ，１９ｂを用意し、厚さ０．１
５ｍｍ、幅が９ｍｍ、長さが４０ｍｍのぶりき板からな
る第３鉄部２２に１２．５ｍｍの間隔をあけて第１及び
第２永久磁石１９ａ，１９ｂをそのＮ極及びＳ極が連結
するように接着した。第１永久磁石１９ａのＳ極及び第
２永久磁石１９ｂのＮ極には厚さ０．３ｍｍ、幅が１１
ｍｍ、長さが２０ｍｍのぶりき板からなる第１及び第２
鉄部２１ａ，２１ｂの基端をそれぞれ接着し、第１及び
第２永久磁石１９ａ，１９ｂから１２ｍｍ離れた第１及
び第２鉄部２１ａ，２１ｂの先端には厚さ１．５ｍｍの
ポリカーボネートの板２３を介してリードスイッチ１６
の第１及び第２リード片１６ａ，１６ｂを接続した。こ
の場合の軟磁性体部分に対向する第１及び第２鉄部２１
ａ，２１ｂのそれぞれの面積Ｓ1は２２０ｍｍ2である。EXAMPLES Next, examples of the present invention will be described in detail. <Example 1> As shown in FIGS. 4 to 6, a first isotropic barium ferrite having a thickness of 2 mm, a width of 5 mm, and a length of 11 mm was used.
And second permanent magnets 19a and 19b are prepared, and the thickness is 0.1
The N-pole and the S-pole of the first and second permanent magnets 19a and 19b are connected to the third iron part 22 made of a brass plate having a width of 5 mm, a width of 9 mm, and a length of 40 mm with an interval of 12.5 mm. So glued. The S pole of the first permanent magnet 19a and the N pole of the second permanent magnet 19b have a thickness of 0.3 mm and a width of 11 mm.
1st and 2nd consisting of a tin plate of 20 mm in length and 20 mm
A 1.5 mm thick polycarbonate plate is attached to the base ends of the iron parts 21a and 21b, and the tips of the first and second iron parts 21a and 21b 12 mm apart from the first and second permanent magnets 19a and 19b. Reed switch 16 via 23
The first and second lead pieces 16a and 16b were connected. In this case, the first and second iron parts 21 facing the soft magnetic material part
The area S 1 of each of a and 21b is 220 mm 2 .
【００３７】リードスイッチ１６は富士通高見沢コンポ
ーネント社製のマイクロリードスイッチＦＤＲ−５ＨＬ
を使用し、リードスイッチ１６の端子には図示しないが
単３乾電池２個とブザーを接続し、ブザーの鳴動により
リードスイッチ１６の導通状態を確認可能に接続した。
この場合の第１及び第２リード片１６ａ，１６ｂと第１
及び第２鉄部２１ａ，２１ｂとの間の所定の距離Ｌ
2（図５）は１．５ｍｍであり、第１及び第２リード片
１６ａ，１６ｂに対向する第１及び第２鉄部２１ａ，２
１ｂのそれぞれの面積Ｓ2は、第１及び第２リード片１
６ａ，１６ｂの直径０．５５ｍｍと第１及び第２鉄部２
１ａ，２１ｂの幅１１ｍｍの積であり６．０５ｍｍ2で
ある。従って上述した式（１）及び（２）の左辺である
（Ｌ2／Ｓ2 ）は０．２４８／ｍｍに構成した。The reed switch 16 is a micro reed switch FDR-5HL manufactured by Fujitsu Takamizawa Component Co., Ltd.
Although not shown, two rechargeable AA batteries and a buzzer were connected to the terminals of the reed switch 16 so that the conduction state of the reed switch 16 could be confirmed by the buzzer sounding.
In this case, the first and second lead pieces 16a, 16b and the first
And a predetermined distance L between the second iron parts 21a and 21b
2 (FIG. 5) is 1.5 mm, and the first and second iron parts 21a, 2 facing the first and second lead pieces 16a, 16b.
The area S 2 of each of the first and second lead pieces 1b is
6a, 16b diameter 0.55 mm and the first and second iron parts 2
The product of 1a and 21b having a width of 11 mm is 6.05 mm 2 . Therefore, it is the left side of the above equations (1) and (2).
( L 2 / S 2 ) was set to 0.248 / mm.
【００３８】＜比較試験１＞第１及び第２鉄部２１ａ，
２１ｂの上面に軟磁性体部分として厚さ０．５ｍｍのぶ
りき板を載せてブザーの鳴動状態を確認したところ、ブ
ザーは鳴動しなかった。この場合におけるぶりき板と第
１及び第２鉄部２１ａ，２１ｂとの間の距離Ｌ1は０ｍ
ｍであるため、上述した式（１）の右辺である（Ｌ1／
Ｓ1）、及び式（２）の右辺である１０×（Ｌ1／Ｓ1）
はそれぞれ０／ｍｍである。<Comparative Test 1> First and second iron parts 21a,
When a buzzer having a thickness of 0.5 mm was placed as a soft magnetic material portion on the upper surface of 21b to check the ringing state of the buzzer, the buzzer did not ring. In this case, the distance L 1 between the tin plate and the first and second iron parts 21a and 21b is 0 m.
Since m, it is the right side of the above equation (1) (L 1 /
S 1 ), and 10 × (L 1 / S 1 ), which is the right side of Expression (2).
Are 0 / mm, respectively.
【００３９】＜比較試験２＞第１及び第２鉄部２１ａ，
２１ｂの上面に厚さ１ｍｍのアクリル板を１枚載せた上
に厚さ０．５ｍｍのぶりき板を更に載せてブザーの鳴動
状態を確認したところ、ブザーは鳴動しなかった。この
場合におけるぶりき板と第１及び第２鉄部２１ａ，２１
ｂとの間の距離Ｌ1は１ｍｍであるため、上述した式
（１）の右辺である（Ｌ1／Ｓ1）は０．００４５／ｍｍ
であり、式（２）の右辺である１０×（Ｌ1／Ｓ1）は
０．０４５／ｍｍである。
＜比較試験３＞第１及び第２鉄部２１ａ，２１ｂの上面
に厚さ１ｍｍのアクリル板を２枚載せた上に厚さ０．５
ｍｍのぶりき板を更に載せてブザーの鳴動状態を確認し
たところ、ブザーは鳴動しなかった。この場合における
ぶりき板と第１及び第２鉄部２１ａ，２１ｂとの間の距
離Ｌ1は２ｍｍであるため、上述した式（１）の右辺で
ある（Ｌ1／Ｓ1）は０．００９１／ｍｍであり、式
（２）の右辺である１０×（Ｌ1／Ｓ1）は０．０９１／
ｍｍである。<Comparative Test 2> First and second iron parts 21a,
When a 1 mm thick acrylic plate was placed on the upper surface of 21b and a tin plate having a thickness of 0.5 mm was further placed to check the ringing state of the buzzer, the buzzer did not ring. In this case, the tin plate and the first and second iron parts 21a, 21
Since the distance L 1 from b is 1 mm, (L 1 / S 1 ) on the right side of the above equation ( 1 ) is 0.0045 / mm.
And 10 × (L 1 / S 1 ) which is the right side of Expression (2) is 0.045 / mm. <Comparative test 3> Two acrylic plates having a thickness of 1 mm were placed on the upper surfaces of the first and second iron parts 21a and 21b, and the thickness was 0.5.
When a buzzer sounding state was confirmed by further mounting a mm-sized tin plate, the buzzer did not sound. In this case, the distance L 1 between the tin plate and the first and second iron parts 21a and 21b is 2 mm, so that (L 1 / S 1 ) on the right side of the above-mentioned formula ( 1 ) is 0. 0091 / mm, and 10 × (L 1 / S 1 ) on the right side of the equation (2) is 0.091 /
mm.
【００４０】＜比較試験４＞
第１及び第２鉄部２１ａ，２１ｂの上面に何も載せなか
った場合のブザーの鳴動状態を確認したところ、ブザー
は鳴動した。 <Comparative Test 4> When the buzzer rang when nothing was placed on the upper surfaces of the first and second iron parts 21a, 21b, the buzzer rang.
【００４１】＜評価＞
比較試験１の結果により、磁石が物品１１の軟磁性体部
分に取付けられると磁石１９と物品１１の軟磁性体部分
との間で主磁路が形成されることが判る。また、比較試
験２及び比較試験３の結果により、非磁性体から成るケ
ース１８が磁石と物品１１の軟磁性体部分の間に介在し
ても磁石１９と軟磁性体部分との間で主磁路が形成され
ることも判る。更に、比較試験４の結果により、ケース
１８が物品１１の軟磁性体部分から取外されて軟磁性体
部分１１ａが磁石１９から所定距離離間すると磁石１９
とリードスイッチ１６との間で警報用磁路が形成されて
磁石１９の磁力によりリードスイッチ１６が閉じられる
ことが確認され、本発明が成立することが判る。<Evaluation> From the result of the comparative test 1, it is understood that when the magnet is attached to the soft magnetic material portion of the article 11, a main magnetic path is formed between the magnet 19 and the soft magnetic material portion of the article 11. . Further, according to the results of the comparative test 2 and the comparative test 3, even if the case 18 made of a non-magnetic material is interposed between the magnet and the soft magnetic material portion of the article 11, the main magnetic field is generated between the magnet 19 and the soft magnetic material portion. It can also be seen that the road is formed. Further, according to the result of the comparative test 4 , when the case 18 is removed from the soft magnetic material portion of the article 11 and the soft magnetic material portion 11a is separated from the magnet 19 by a predetermined distance, the magnet 19 is removed.
It is confirmed that an alarm magnetic path is formed between the reed switch 16 and the reed switch 16, and the reed switch 16 is closed by the magnetic force of the magnet 19, and it is understood that the present invention is realized.
【００４２】[0042]
【発明の効果】以上述べたように、本発明における盗難
防止用タグによれば、ケース内に永久磁石を設け、ケー
スが物品の軟磁性体部分に取付けられた状態で磁石と物
品の軟磁性体部分との間で主磁路が形成され、ケースが
物品の軟磁性体部分から取外された状態で磁石とリード
スイッチとの間で警報用磁路が形成されてリードスイッ
チを閉じるように構成したので、ケースが物品の軟磁性
体部分から取外され又はケースが軟磁性体から離間する
とリードスイッチが閉じてケースに内蔵された警報手段
が警報を発し、盗難監視用の物品からタグが分離された
か否かを確実に検出して警報を発することができる。As described above, according to the anti-theft tag of the present invention, the permanent magnet is provided in the case and the magnet and the soft magnetic property of the article are attached to the soft magnetic material part of the article. A main magnetic path is formed between the body part and an alarm magnetic path is formed between the magnet and the reed switch to close the reed switch when the case is removed from the soft magnetic material part of the article. With this configuration, when the case is removed from the soft magnetic material part of the article or when the case is separated from the soft magnetic material, the reed switch is closed and the alarm means built in the case gives an alarm, and the tag for theft monitoring article is released. It is possible to reliably detect whether or not they have been separated and issue an alarm.
【００４３】また、本発明における扉開放警報装置によ
れば、扉が閉止するとき扉が当接する扉用枠に、又は扉
用枠に当接して閉止する扉にその扉又は扉用枠に対向し
て非磁性のケースを取付け、ケースに対向する閉止状態
の扉又は扉用枠が軟磁性体からなるか、又は扉又は扉用
枠に軟磁性体を設け、扉が閉止状態で軟磁性体に対向す
る永久磁石と、リードスイッチと、スイッチが閉じると
警報を発する警報手段とをケースに内蔵し、扉の閉止状
態で磁石と軟磁性体との間で主磁路が形成されてスイッ
チが開き、扉の開放状態で磁石とスイッチとの間で警報
用磁路が形成されてスイッチが閉じるように構成したの
で、盗難者が扉を開放すると、磁石と軟磁性体との間で
形成されていた主磁路が絶たれ、永久磁石とリードスイ
ッチとの間で警報用磁路が形成される。警報用磁路が形
成されると磁石の磁力によりリードスイッチが閉じ、警
報手段が警報を発することができる。According to the door opening alarm device of the present invention, the door or the door frame faces the door frame which the door abuts when the door is closed, or the door which abuts and closes the door frame. Then, a non-magnetic case is attached, and the closed door or door frame facing the case is made of a soft magnetic material, or a soft magnetic material is provided on the door or the door frame, and the soft magnetic material is provided when the door is closed. , A reed switch, and an alarm means for issuing an alarm when the switch is closed are built in the case, and the main magnetic path is formed between the magnet and the soft magnetic material when the door is closed, and the switch is Since the alarm magnetic path is formed between the magnet and the switch when the door is opened and the switch is closed, when the door is opened by the thief, it is formed between the magnet and the soft magnetic material. The main magnetic path that had been used was cut off, and an alarm was issued between the permanent magnet and the reed switch. The magnetic path is formed. When the alarm magnetic path is formed, the magnetic force of the magnet closes the reed switch, and the alarm means can issue an alarm.
【００４４】更に、永久磁石に第１及び第２永久磁石を
使用し、そのＮ極及びＳ極を第３鉄部により連結すれ
ば、永久磁石自体を薄くすることにより、ケース自体の
厚さを薄くすることができる。第１永久磁石のＳ極及び
第２永久磁石のＮ極に基端がそれぞれ接着された第１及
び第２鉄部の先端にリードスイッチの第１及び第２リー
ド片を所定の距離をあけて接続すれば、リードスイッチ
を接続する所定の距離の調整及び第１及び第２リード片
の接続を容易に行うことができる。この場合、第１及び
第２鉄部の間に挿脱可能に軟磁性体からなる警報不作動
部材を設ければ、警報不作動部材を第１及び第２鉄部の
間に挿入するだけで、警報手段による警報を防止するこ
とができる。具体的に、盗難防止用タグでは、物品への
取付け時又は取付けられた物品からの取外し時のタグ、
若しくは正規に料金を支払った物品に取付けられている
タグの警報手段による警報を防止することができ、扉開
放警報装置では、顧客の要求によりその店員が扉を開放
する際の警報手段による警報を防止することができる。Furthermore, if the first and second permanent magnets are used as the permanent magnets and the N pole and the S pole are connected by the third iron part, the thickness of the case itself can be reduced by thinning the permanent magnet itself. Can be thinned. Place the first and second reed pieces of the reed switch at a predetermined distance from the tips of the first and second iron parts whose base ends are bonded to the S pole of the first permanent magnet and the N pole of the second permanent magnet, respectively. By connecting, it is possible to easily adjust a predetermined distance for connecting the reed switch and to connect the first and second reed pieces. In this case, if an alarm deactivating member made of a soft magnetic material is provided between the first and second iron parts so as to be removable, it is only necessary to insert the alarm deactivating member between the first and second iron parts. It is possible to prevent the alarm by the alarm means. Specifically, the anti-theft tag is a tag when attached to or removed from an attached article,
Alternatively, it is possible to prevent an alarm by an alarm means of a tag attached to an article for which a regular payment has been made, and in a door opening alarm device, an alarm by an alarm means when the clerk opens the door at the request of the customer. Can be prevented.
【図１】本発明の盗難防止用タグの構成図。FIG. 1 is a configuration diagram of a theft prevention tag of the present invention.
【図２】その盗難防止用タグが物品から取外された状態
を示す図１に対応する構成図。FIG. 2 is a configuration diagram corresponding to FIG. 1, showing a state in which the antitheft tag is removed from an article.
【図３】その盗難防止用タグの分解斜視図。FIG. 3 is an exploded perspective view of the anti-theft tag.
【図４】そのタグの磁石と鉄部とリードスイッチとの関
係を示す上面図。FIG. 4 is a top view showing the relationship between the magnet of the tag, the iron portion, and the reed switch.
【図５】そのタグの磁石と鉄部とリードスイッチとの関
係を示す側面図。FIG. 5 is a side view showing the relationship between the magnet of the tag, the iron portion, and the reed switch.
【図６】そのタグの磁石と鉄部とリードスイッチとの関
係を示す正面図。FIG. 6 is a front view showing the relationship between the magnet of the tag, the iron portion, and the reed switch.
【図７】そのリードスイッチの拡大図。FIG. 7 is an enlarged view of the reed switch.
【図８】そのタグが取付けられた物品を送信アンテナ及
び受信アンテナ間を通過させている状態を示す図。FIG. 8 is a diagram showing a state in which an article to which the tag is attached is passed between a transmitting antenna and a receiving antenna.
【図９】扉用枠にケースが取付けられた本発明の扉開放
警報装置の構成図。FIG. 9 is a configuration diagram of a door opening alarm device of the present invention in which a case is attached to a door frame.
【図１０】その扉が開放された状態を示す図９に対応す
る構成図。FIG. 10 is a configuration diagram corresponding to FIG. 9 showing a state in which the door is opened.
【図１１】その扉開放警報装置の分解斜視図。FIG. 11 is an exploded perspective view of the door opening alarm device.
【図１２】扉にケースが取付けられた本発明の扉開放警
報装置の構成図。FIG. 12 is a configuration diagram of a door opening alarm device of the present invention in which a case is attached to the door.
【図１３】その扉が開放された状態を示す図１２に対応
する構成図。FIG. 13 is a configuration diagram corresponding to FIG. 12 showing a state in which the door is opened.
１１ 物品 １２ タグ １３ 送信アンテナ １４ 共振回路部 １６ リードスイッチ １６ａ 第１リード片 １６ｂ 第２リード片 １７ 警報手段 １８ ケース １９ 永久磁石 １９ａ 第１永久磁石 １９ｂ 第２永久磁石 ２１ａ 第１鉄部 ２１ｂ 第２鉄部 ２２ 第３鉄部 ２４ 警報不作動部材 ４１ 扉 ４２ 扉用枠 ４３ 軟磁性体 ４８ ケース 11 articles 12 tags 13 Transmit antenna 14 Resonance circuit section 16 reed switch 16a First lead piece 16b Second lead piece 17 Alarm means 18 cases 19 permanent magnet 19a First permanent magnet 19b Second permanent magnet 21a Iron 1st part 21b Iron No. 2 22 Iron No. 3 24 Alarm inoperative member 41 door 42 Door frame 43 Soft magnetic material 48 cases
───────────────────────────────────────────────────── フロントページの続き (72)発明者 八幡 誠朗 東京都千代田区大手町１丁目６番１号 知財サービス株式会社内 (56)参考文献 特開 平５−143875（ＪＰ，Ａ) 特開 平８−185584（ＪＰ，Ａ) 実開 昭61−103788（ＪＰ，Ｕ) 実開 平２−149495（ＪＰ，Ｕ) 実開 平２−42180（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G08B 13/00 - 13/26 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiro Yawata 1-6-1, Otemachi, Chiyoda-ku, Tokyo IP Service Co., Ltd. (56) Reference JP-A-5-143875 (JP, A) JP Flat 8-185584 (JP, A) Actual Open 61-103788 (JP, U) Actual Open 2-149495 (JP, U) Actual Open 2-42180 (JP, U) (58) Fields investigated (Int .Cl. 7 , DB name) G08B 13/00-13/26
Claims (8)
1a)に非磁性のケース(18)が取付けられ、 特定周波数の電波に共振する共振回路部(14)と、前記軟
磁性体部分(11a)に対向する永久磁石(19)と、リードス
イッチ(16)と、前記スイッチ(16)が閉じると警報を発す
る警報手段(17)とが前記ケース(18)に内蔵された盗難防
止用タグであって、 前記ケース(18)の取付け状態で前記磁石(19)と前記軟磁
性体部分(11a)との間で主磁路が形成されて前記スイッ
チ(16)が開き、 前記ケース(18)の取外し状態で前記磁石(19)と前記スイ
ッチ(16)との間で警報用磁路が形成されて前記スイッチ
(16)が閉じるように構成されたことを特徴とする盗難防
止用タグ。1. A soft magnetic material part (1) of an article (11) for monitoring theft.
A non-magnetic case (18) is attached to 1a), a resonance circuit section (14) that resonates with a radio wave of a specific frequency, a permanent magnet (19) facing the soft magnetic material section (11a), and a reed switch ( 16) and an alarm means (17) for issuing an alarm when the switch (16) is closed are anti-theft tags built in the case (18), and the magnets are attached in the case (18). A main magnetic path is formed between the soft magnetic material portion (11a) and the soft magnetic material portion (11a) to open the switch (16), and the magnet (19) and the switch (16) are removed when the case (18) is removed. ) And a magnetic path for alarm is formed between
Anti-theft tag characterized in that (16) is configured to close.
２永久磁石(19b)からなり、前記第１永久磁石(19a)のＳ
極及び第２永久磁石(19b)のＮ極に基端がそれぞれ接着
され前記物品(11)の軟磁性体部分(11a)に対向する前記
ケース(18)内面にそれぞれ取付けられかつリードスイッ
チ(16)の第１及び第２リード片(16a,16b)が所定の距離
をあけて先端に接続された第１及び第２鉄部(21a,21b)
と、前記第１永久磁石(19a)のＮ極及び第２永久磁石(19
b)のＳ極に連結するように接着された第３鉄部(22)とを
備え、 前記物品(11)の軟磁性体部分(11a)と前記第１及び第２
鉄部(21a,21b)との間の距離をＬ1、 前記軟磁性体部分(11a)に対向する前記第１及び第２鉄
部(21a,21b)のそれぞれの面積をＳ1、 前記第１及び第２リード片(16a,16b)と前記第１及び第
２鉄部(21a,21b)との間の所定の距離をＬ2、 前記第１及び第２リード片(16a,16b)に対向する前記第
１及び第２鉄部(21a,21b)のそれぞれの面積をＳ2 とするとき、次式（１）の関係がある請求項１記載の盗
難防止用タグ。（ Ｌ2／Ｓ2 ）＞ （Ｌ1／Ｓ1） …… （１）2. The permanent magnet (19) comprises a first permanent magnet (19a) and a second permanent magnet (19b), and the S of the first permanent magnet (19a).
The base end is adhered to the pole and the N pole of the second permanent magnet (19b), and the reed switch (16) is attached to the inner surface of the case (18) facing the soft magnetic material part (11a) of the article (11). ) 1st and 2nd iron pieces (21a, 21b) to which the 1st and 2nd lead pieces (16a, 16b) are connected to the tip with a predetermined distance.
And the N pole of the first permanent magnet (19a) and the second permanent magnet (19a).
b) a third iron part (22) adhered so as to be connected to the S pole, and the soft magnetic material part (11a) of the article (11) and the first and second
The distance from the iron part (21a, 21b) is L 1 , the area of each of the first and second iron parts (21a, 21b) facing the soft magnetic part (11a) is S 1 , and A predetermined distance between the first and second lead pieces (16a, 16b) and the first and second iron parts (21a, 21b) is L 2 , and the first and second lead pieces (16a, 16b) are The anti-theft tag according to claim 1, wherein when the areas of the first and second iron parts (21a, 21b) facing each other are S 2 , there is a relation of the following expression (1). ( L 2 / S 2 ) > (L 1 / S 1 ) ... (1)
可能に軟磁性体からなる警報不作動部材(24)が設けら
れ、前記警報不作動部材(24)の挿入状態で前記ケース(1
8)が前記物品(11)の軟磁性体部分(11a)から取外された
ときでも警報用磁路を遮断し、前記警報不作動部材(24)
の離脱状態で前記ケース(18)が前記物品(11)の軟磁性体
部分(11a)から取外されたときに警報用磁路を形成する
ように構成された請求項２記載の盗難防止用タグ。3. An alarm deactivating member (24) made of a soft magnetic material is detachably inserted between the first and second iron parts (21a, 21b), and the alarm deactivating member (24) is inserted. In the above case (1
Even when 8) is removed from the soft magnetic material part (11a) of the article (11), the alarm magnetic path is shut off, and the alarm deactivating member (24).
The antitheft device according to claim 2, wherein when the case (18) is detached from the soft magnetic material portion (11a) of the article (11) in the detached state, an alarm magnetic path is formed. tag.
する扉用枠(42)に非磁性のケース(48)が取付けられ、 前記ケース(48)に対向する閉止状態の前記扉(41)が軟磁
性体からなるか、又は前記扉(41)に軟磁性体(43)が設け
られ、 閉止状態の前記扉(41)の軟磁性体(43)に対向する永久磁
石(19)と、リードスイッチ(16)と、前記スイッチ(16)が
閉じると警報を発する警報手段(17)とが前記ケース(48)
に内蔵され、 前記扉(41)の閉止状態で前記磁石(19)と前記軟磁性体(4
3)との間で主磁路が形成されて前記スイッチ(16)が開
き、 前記扉(41)の開放状態で前記磁石(19)と前記スイッチ(1
6)との間で警報用磁路が形成されて前記スイッチ(16)が
閉じるように構成されたことを特徴とする扉開放警報装
置。4. A non-magnetic case (48) is attached to a door frame (42) with which the door (41) abuts when the door (41) is closed, and the non-magnetic case (48) is in a closed state facing the case (48). The door (41) is made of a soft magnetic material, or the door (41) is provided with a soft magnetic material (43), and the permanent magnet faces the soft magnetic material (43) of the door (41) in the closed state. (19), a reed switch (16), and an alarm means (17) for issuing an alarm when the switch (16) is closed, the case (48)
The magnet (19) and the soft magnetic body (4) are installed in the closed state of the door (41).
A main magnetic path is formed between the switch (16) and the switch (16), and the magnet (19) and the switch (1) are opened when the door (41) is open.
A door open alarm device characterized in that an alarm magnetic path is formed between the switch and the switch (16) to close the switch (16).
前記扉用枠(42)に対向して非磁性のケース(48)が取付け
られ、 前記扉用枠(42)が軟磁性体からなるか、又は前記扉用枠
(42)に軟磁性体が設けられ、 前記扉(41)の閉止状態で前記扉用枠(42)の軟磁性体に対
向する永久磁石(19)と、リードスイッチ(16)と、前記ス
イッチ(16)が閉じると警報を発する警報手段(17)とが前
記ケース(48)に内蔵され、 前記扉(41)の閉止状態で前記磁石(19)と前記軟磁性体(4
1)との間で主磁路が形成されて前記スイッチ(16)が開
き、 前記扉(41)の開放状態で前記磁石(19)と前記スイッチ(1
6)との間で警報用磁路が形成されて前記スイッチ(16)が
閉じるように構成されたことを特徴とする扉開放警報装
置。5. A non-magnetic case (48) is attached to a door (41) that abuts and closes the door frame (42) so as to face the door frame (42). ) Is made of a soft magnetic material, or the door frame
(42) is provided with a soft magnetic material, the permanent magnet (19) facing the soft magnetic material of the door frame (42) in the closed state of the door (41), a reed switch (16), and the switch. An alarm means (17) for issuing an alarm when the (16) is closed is built in the case (48), and the magnet (19) and the soft magnetic material (4) are provided when the door (41) is closed.
A main magnetic path is formed between the switch (16) and the magnet (19) and the switch (1) when the door (41) is open.
A door open alarm device characterized in that an alarm magnetic path is formed between the switch and the switch (16) to close the switch (16).
２永久磁石(19b)からなり、前記第１永久磁石(19a)のＳ
極及び第２永久磁石(19b)のＮ極に基端がそれぞれ接着
され扉(41)又は扉用枠(42)の軟磁性体(43)に対向する前
記ケース(48)内面にそれぞれ取付けられかつリードスイ
ッチ(16)の第１及び第２リード片(16a,16b)が所定の距
離をあけて先端に接続された第１及び第２鉄部(21a,21
b)と、前記第１永久磁石(19a)のＮ極及び第２永久磁石
(19b)のＳ極に連結するように接着された第３鉄部(22)
とを備え、 扉(41)又は扉用枠(42)の軟磁性体(43)と前記第１及び第
２鉄部(21a,21b)との間の距離をＬ1、 前記軟磁性体(43)に対向する前記第１及び第２鉄部(21
a,21b)のそれぞれの面積をＳ1、 前記第１及び第２リード片(16a,16b)と前記第１及び第
２鉄部(21a,21b)との間の所定の距離をＬ2、 前記第１及び第２リード片(16a,16b)に対向する前記第
１及び第２鉄部(21a,21b)のそれぞれの面積をＳ2とする
とき、次式（１）の関係がある請求項４又は５記載の扉
開放警報装置。（ Ｌ2／Ｓ2 ）＞ （Ｌ1／Ｓ1） …… （１）6. The permanent magnet (19) comprises a first permanent magnet (19a) and a second permanent magnet (19b), and the S of the first permanent magnet (19a).
The base ends of the poles and the N poles of the second permanent magnets (19b) are adhered to the inner surfaces of the case (48) facing the door (41) or the soft magnetic material (43) of the door frame (42). In addition, the first and second iron parts (21a, 21) to which the first and second reed pieces (16a, 16b) of the reed switch (16) are connected to the tip at a predetermined distance.
b), the N pole of the first permanent magnet (19a) and the second permanent magnet
The third iron part (22) adhered so as to be connected to the south pole of (19b)
The distance between the soft magnetic material (43) of the door (41) or the door frame (42) and the first and second iron parts (21a, 21b) is L 1 , and the soft magnetic material ( 43) facing the first and second iron parts (21
a, 21b) each area S 1 , a predetermined distance between the first and second lead pieces (16a, 16b) and the first and second iron parts (21a, 21b) L 2 , When the area of each of the first and second iron portions (21a, 21b) facing the first and second lead pieces (16a, 16b) is S 2 , the following formula (1) is satisfied: A door opening alarm device according to item 4 or 5 . ( L 2 / S 2 ) > (L 1 / S 1 ) ... (1)
可能に軟磁性体からなる警報不作動部材(24)が設けら
れ、前記警報不作動部材(24)の挿入状態で扉(41)の開放
状態でも警報用磁路を遮断し、前記警報不作動部材(24)
の離脱状態で前記扉(41)の開放状態で警報用磁路を形成
するように構成された請求項６記載の扉開放警報装置。7. An alarm deactivating member (24) made of a soft magnetic material is provided between the first and second iron parts (21a, 21b) so as to be removable, and the alarm deactivating member (24) is inserted. In this state, even if the door (41) is open, the alarm magnetic path is shut off, and the alarm inactivating member (24)
The door opening alarm device according to claim 6 , wherein the alarm magnetic path is formed when the door (41) is opened when the door is opened.
性体(43)が鉄板である請求項４ないし７いずれか記載の
扉開放警報装置。8. The door open alarm device according to claim 4 , wherein the soft magnetic body (43) provided on the door (41) or the door frame (42) is an iron plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03146399A JP3377036B2 (en) | 1998-06-11 | 1999-02-09 | Anti-theft tag and door open alarm |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10-163538 | 1998-06-11 | ||
| JP16353898 | 1998-06-11 | ||
| JP03146399A JP3377036B2 (en) | 1998-06-11 | 1999-02-09 | Anti-theft tag and door open alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000067332A JP2000067332A (en) | 2000-03-03 |
| JP3377036B2 true JP3377036B2 (en) | 2003-02-17 |
Family
ID=26369937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03146399A Expired - Fee Related JP3377036B2 (en) | 1998-06-11 | 1999-02-09 | Anti-theft tag and door open alarm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3377036B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008125621A1 (en) | 2007-04-13 | 2008-10-23 | Alert Metalguard Aps | A method, a device and a system for preventing false alarms in a theft-preventing system |
| WO2013119713A1 (en) * | 2012-02-06 | 2013-08-15 | Eastern Aero Marine, Inc. | Detection system and device |
| JP7437954B2 (en) | 2020-02-03 | 2024-02-26 | 川崎車両株式会社 | Lock state detection device and lock state management system |
-
1999
- 1999-02-09 JP JP03146399A patent/JP3377036B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000067332A (en) | 2000-03-03 |
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