JP2015021334A - Locking/unlocking detector for fitting - Google Patents

Locking/unlocking detector for fitting Download PDF

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JP2015021334A
JP2015021334A JP2013151881A JP2013151881A JP2015021334A JP 2015021334 A JP2015021334 A JP 2015021334A JP 2013151881 A JP2013151881 A JP 2013151881A JP 2013151881 A JP2013151881 A JP 2013151881A JP 2015021334 A JP2015021334 A JP 2015021334A
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magnetic
detection
magnetic field
signal
detection signal
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JP6238155B2 (en
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智史 梶山
Satoshi Kajiyama
智史 梶山
柴田　究
Kiwamu Shibata
究 柴田
松田　啓史
Hiroshi Matsuda
啓史 松田
森　秀夫
Hideo Mori
秀夫 森
亜紀子 本田
Akiko Honda
亜紀子 本田
中村　敦
Atsushi Nakamura
敦 中村
昌典 栗田
Masanori Kurita
昌典 栗田
圭太郎 干場
Keitaro Hoshiba
圭太郎 干場
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To improve workability during construction while suppressing false detection.SOLUTION: In a detector of the present embodiment, a magnetic detection part 3 detects a bidirectional magnetic field. Thus, since a direction of a magnetic field of a permanent magnet 1 and a magnetic field detection direction of the magnetic detection part 3 do not have to be aligned with each other during construction, workability during the construction can be improved. Additionally, since the detector of the present embodiment has the magnetic detection part 3 provided with a bidirectional two-output magnetic sensor 30, false detection caused by a bidirectional one-output magnetic sensor can be suppressed.

Description

本発明は、建物の出入口や窓に設けられる建具を施錠する錠の施解錠を検出する建具用施解錠検出装置に関する。   The present invention relates to a locking / unlocking detection device for joinery that detects locking / unlocking of a lock that locks a fitting provided in a doorway or a window of a building.

例えば、特許文献１には、窓を開閉する建具(引き違い戸)に設けられるクレセント錠の施錠と解錠の各状態を検出する戸締まり検出装置が開示されている。この従来例は、引き違い式の窓枠の一方に設けられたクレセント錠の操作片に永久磁石が取り付けられ、他方の窓枠に設けられたワイヤレス送信器に近接センサが内蔵されている。近接センサにはリードスイッチが用いられ、クレセント錠の施錠状態では操作片に取り付けられた永久磁石の磁界によってリードスイッチがオンし、解錠状態では操作片に取り付けられた永久磁石が離れるためにリードスイッチがオフする。そして、リードスイッチのオン・オフによって検出されるクレセント錠の施解錠状態がワイヤレス送信器からワイヤレス信号で送信される。   For example, Patent Literature 1 discloses a door tightness detection device that detects each state of locking and unlocking of a crescent lock provided on a fitting (sliding door) that opens and closes a window. In this conventional example, a permanent magnet is attached to an operation piece of a crescent lock provided on one side of a retractable window frame, and a proximity sensor is incorporated in a wireless transmitter provided on the other window frame. A reed switch is used for the proximity sensor. In the locked state of the crescent lock, the reed switch is turned on by the magnetic field of the permanent magnet attached to the operation piece, and in the unlocked state, the reed switch is separated to release the permanent magnet attached to the operation piece. The switch turns off. Then, the lock / unlock state of the crescent lock detected by turning on / off the reed switch is transmitted from the wireless transmitter as a wireless signal.

ところで、リードスイッチは鎖交する磁束の向きに関わらず、磁界の強さのみでオン・オフが切り換えられるが、機械的な接点構造を有するために比較的に大型になるという欠点を有している。   By the way, the reed switch can be switched on and off only by the strength of the magnetic field, regardless of the direction of the magnetic flux interlinking, but it has the disadvantage that it is relatively large due to its mechanical contact structure. Yes.

これに対して、ホール素子や磁気抵抗素子などを用いた磁気センサであれば、リードスイッチに比べて小型化が容易である。なお、ホール素子や磁気抵抗素子などを用いた磁気センサは、ホール素子又は磁気抵抗素子と波形整形回路を１チップ化したＩＣ(集積回路)内蔵型磁気センサ(以下、磁気センサと略称する。)として市販されている。   In contrast, a magnetic sensor using a Hall element, a magnetoresistive element, or the like can be easily downsized as compared to a reed switch. A magnetic sensor using a Hall element, a magnetoresistive element, or the like is an IC (integrated circuit) built-in type magnetic sensor (hereinafter abbreviated as a magnetic sensor) in which a Hall element or a magnetoresistive element and a waveform shaping circuit are integrated into a single chip. Is commercially available.

特開平６−３０９５７２号公報JP-A-6-309572

ところで、上述のような磁気センサには、特定の方向の磁界のみを検出するタイプ(単方向タイプ)と、特定の方向とその逆方向の磁界をそれぞれ検出するタイプ(双方向タイプ)とがある。さらに、双方向タイプの磁気センサには、各方向の検出磁界に符号を付けて出力する２出力タイプのものと、各方向の検出磁界の絶対値を出力する１出力タイプのものとがある。   By the way, there are two types of magnetic sensors as described above: a type that detects only a magnetic field in a specific direction (unidirectional type) and a type that detects a magnetic field in a specific direction and the opposite direction (bidirectional type). . Further, the bidirectional type magnetic sensor includes a two-output type that outputs a detected magnetic field in each direction with a sign, and a one-output type that outputs an absolute value of the detected magnetic field in each direction.

単方向１出力タイプの磁気センサは、永久磁石の磁界の向きに対する配置(電流の向き)が規定されるため、施工時に誤った向きに配置されると検出不能になるなどの不具合が生じてしまう。故に、施工時に永久磁石の磁界の向きと磁気センサの向きを揃える必要があるので、施工作業が煩雑になってしまう。   Unidirectional one-output type magnetic sensors have an arrangement (current direction) with respect to the direction of the magnetic field of the permanent magnets, and if the sensor is placed in the wrong direction during construction, problems such as inability to detect will occur. . Therefore, since it is necessary to align the direction of the magnetic field of the permanent magnet and the direction of the magnetic sensor at the time of construction, the construction work becomes complicated.

また、双方向１出力タイプの磁気センサは、永久磁石が施錠位置から解錠位置に移動する途中で磁界の向きが反転し、反転した磁界の検知出力(絶対値)がしきい値を一時的に超えてしまい、施錠状態として誤検出される虞がある。   The bidirectional single-output type magnetic sensor reverses the direction of the magnetic field while the permanent magnet moves from the locked position to the unlocked position, and the detected output (absolute value) of the reversed magnetic field temporarily sets the threshold value. May be erroneously detected as a locked state.

本発明は、上記課題に鑑みて為されたものであり、誤検出を抑制しつつ施工時の作業性の向上を図ることを目的とする。   This invention is made | formed in view of the said subject, and aims at improving the workability | operativity at the time of construction, suppressing a misdetection.

本発明の建具用施解錠検出装置は、建物の出入口や窓に設けられる建具を施錠する錠の施解錠を検出する建具用施解錠検出装置であって、施錠位置と解錠位置の間を変位する前記錠の操作片に取り付けられる永久磁石と、前記建具に取り付けられて磁界を検知するとともに検知した磁界の向き及び強さに応じた検知信号を出力する磁気検知部と、前記検知信号に応じて前記操作片の変位位置を判定する判定部とを備え、前記磁気検知部は、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成され、前記判定部は、一方の極性の前記検知信号を第１のしきい値と比較する第１モードと、他方の極性の前記検知信号を第２のしきい値と比較する第２モードとを択一的に選択して実行し、前記検知信号と前記第１のしきい値又は前記第２のしきい値との比較結果に応じて前記操作片の変位位置を判定するように構成されることを特徴とする。   The locking / unlocking detection device for joinery of the present invention is a locking / unlocking detection device for fittings that detects the locking / unlocking of the lock that locks the fitting provided in the entrance / exit of the building, and is displaced between the locking position and the unlocking position. A permanent magnet attached to the operation piece of the lock, a magnetic detector attached to the joinery for detecting a magnetic field and outputting a detection signal according to the direction and strength of the detected magnetic field, and according to the detection signal A determination unit that determines a displacement position of the operation piece, and the magnetic detection unit is configured to detect a bidirectional magnetic field separately and to output a detection signal having a different polarity for each direction, The determination unit selects a first mode in which the detection signal of one polarity is compared with a first threshold and a second mode in which the detection signal of the other polarity is compared with a second threshold. And select and execute the detection signal and the Characterized in that it is configured to determine a displacement position of the operating piece in accordance with a result of comparison between the first threshold or the second threshold value.

この建具用施解錠検出装置において、前記磁気検知部は、複数の磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成されていることが好ましい。   In this locking / unlocking detection apparatus for joinery, the magnetic detection unit includes a plurality of magnetoresistive elements and an output circuit that converts a change in the resistance value of the magnetoresistive element into an electric signal and outputs it as the detection signal. It is preferable to be configured so as to detect a bidirectional magnetic field separately and to output detection signals having different polarities in each direction.

この建具用施解錠検出装置において、前記磁気検知部は、磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、単方向の磁界を検知して検知信号を出力するように構成される磁気センサを２つ備え、前記各磁気センサの検知信号が互いに異なる極性となるように構成されていることが好ましい。   In this join / unlock detection device for joinery, the magnetic detection unit includes a magnetoresistive element and an output circuit that converts a change in the resistance value of the magnetoresistive element into an electric signal and outputs the electric signal as a detection signal. It is preferable that two magnetic sensors configured to detect a unidirectional magnetic field and output a detection signal are provided, and the detection signals of the magnetic sensors have different polarities. .

この建具用施解錠検出装置において、前記磁気検知部は、２つの磁気センサを備え、第１の前記磁気センサは、複数の磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成され、第２の前記磁気センサは、複数の磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、双方向の磁界を各別に検知し、且つ各方向について極性の等しい検知信号を出力するように構成され、前記判定部は、前記第１及び第２の磁気センサの検知信号に基づいて前記操作片の変位位置を判定するように構成されることが好ましい。   In this joinery unlocking detection apparatus, the magnetic detection unit includes two magnetic sensors, and the first magnetic sensor uses a plurality of magnetoresistive elements and a change in resistance value of the magnetoresistive elements as an electrical signal. An output circuit that converts and outputs the detection signal as a detection signal, and is configured to detect a bidirectional magnetic field separately and output a detection signal having a different polarity in each direction; In the magnetic sensor, a plurality of magnetoresistive elements and an output circuit that converts a change in resistance value of the magnetoresistive element into an electric signal and outputs the electric signal as a detection signal are integrated on one chip, and a bidirectional magnetic field And a detection signal having the same polarity in each direction is output, and the determination unit determines the displacement position of the operation piece based on the detection signals of the first and second magnetic sensors. To judge It made it is preferable.

この建具用施解錠検出装置において、前記永久磁石の磁束を前記磁気検知部に導く磁気誘導体を有し、前記磁気誘導体は、前記磁気検知部の磁界検知方向に沿って前記磁気検知部を挟んだ両側に配置されることが好ましい。   In this locking / unlocking detection device for joinery, a magnetic derivative is provided that guides the magnetic flux of the permanent magnet to the magnetic detection unit, and the magnetic derivative sandwiches the magnetic detection unit along a magnetic field detection direction of the magnetic detection unit. It is preferable to arrange on both sides.

この建具用施解錠検出装置において、前記磁気誘導体は、前記磁気検知部から離れるにつれて前記磁界検知方向と交差する方向の幅寸法が大きくなる形状に形成されることが好ましい。   In this join / unlock detection apparatus for joinery, it is preferable that the magnetic derivative is formed in a shape in which a width dimension in a direction intersecting the magnetic field detection direction increases as the distance from the magnetic detection unit increases.

この建具用施解錠検出装置において、前記磁気誘導体は、前記磁気検知部と対向する対向辺を有する形状に形成されることが好ましい。   In this join / unlock detection apparatus for joinery, it is preferable that the magnetic derivative is formed in a shape having opposing sides facing the magnetic detection unit.

本発明の建具用施解錠検出装置は、磁気検知部が双方向の磁界を検知し、しかも、磁気検知部がいわゆる双方向２出力型の磁気センサを備えているので、誤検出を抑制しつつ施工時の作業性の向上を図ることができるという効果がある。   In the locking / unlocking detection apparatus for joinery of the present invention, the magnetic detection unit detects a bidirectional magnetic field, and the magnetic detection unit includes a so-called bidirectional two-output type magnetic sensor, thereby suppressing erroneous detection. There is an effect that workability at the time of construction can be improved.

本発明に係る建具用施解錠検出装置の実施形態１の動作を説明するための波形図である。It is a wave form diagram for demonstrating operation | movement of Embodiment 1 of the locking / unlocking detection apparatus for joinery which concerns on this invention. 同上を示し、(ａ)は一部省略した斜視図、(ｂ)は磁気検知部の平面図である。FIG. 4A is a perspective view in which a part is omitted, and FIG. 4B is a plan view of a magnetic detection unit. 同上の回路ブロック図である。It is a circuit block diagram same as the above. 同上における磁石ブロックを示し、(ａ)は斜視図、(ｂ)は断面図である。The magnet block same as the above is shown, (a) is a perspective view, (b) is sectional drawing. 同上の動作説明用のフローチャートである。It is a flowchart for operation | movement description same as the above. 同上の動作説明用の波形図である。It is a wave form diagram for operation explanation same as the above. 本発明に係る建具用施解錠検出装置の実施形態２における磁気検知部の平面図である。It is a top view of the magnetic detection part in Embodiment 2 of the locking / unlocking detection apparatus for joinery concerning this invention. 本発明に係る建具用施解錠検出装置の実施形態３における磁気検知部の平面図である。It is a top view of the magnetic detection part in Embodiment 3 of the locking / unlocking detection apparatus for joinery which concerns on this invention. 同上の動作説明用のフローチャートである。It is a flowchart for operation | movement description same as the above.

以下、窓を開閉する建具(引き違い戸)に設けられるクレセント錠の施錠と解錠の各状態を検出する建具用施解錠検出装置に本発明の技術思想を適用した実施形態について、図面を参照して詳細に説明する。   Hereinafter, referring to the drawings, an embodiment in which the technical idea of the present invention is applied to a locking / unlocking detection device for fittings that detects each state of locking and unlocking of a crescent lock provided on a fitting (sliding door) that opens and closes a window. And will be described in detail.

クレセント錠100は、図２(ａ)に示すように引き違い式の２枚の窓枠110，111の一方の窓枠110に固定されたクレセント錠本体101と、他方の窓枠111に固定されたクレセント受け102とで構成される。クレセント錠本体101は、直方体形状の台座103と、台座103に対して回動自在に設けられた半月形状のクレセント部104と、一端がクレセント部104と結合されて台座103と平行に突出する矩形箱状の操作片105とを具備する。クレセント部104及び操作片105は、クレセント部104の中央を支点として回動自在に台座103に軸支されている。そして、操作片105を持ってクレセント部104を回動させることにより、操作片105がクレセント部104の上に位置するときはクレセント部104がクレセント受け102と係合してクレセント錠100が施錠状態となる(図２(ａ)参照)。一方、操作片105がクレセント部104の下に位置するときはクレセント部104とクレセント受け102との係合が外れてクレセント錠100が解錠状態となる。ただし、このようなクレセント錠100は従来周知であるから、クレセント錠本体101の詳細な構造の図示及び説明は省略する。なお、以下では、図２(ａ)に示すようにクレセント錠100が施錠状態のときの操作片105の位置(クレセント部104より上の位置)を「施錠位置」、クレセント錠100が解錠状態のときの操作片105の位置(クレセント部104より下の位置)を「解錠位置」と呼ぶことにする。   The crescent lock 100 is fixed to the crescent lock body 101 fixed to one window frame 110 of the two sliding-type window frames 110 and 111 and the other window frame 111 as shown in FIG. And a crescent receiver 102. The crescent lock body 101 includes a rectangular parallelepiped base 103, a half-moon-shaped crescent portion 104 provided so as to be rotatable with respect to the base 103, and a rectangular shape whose one end is coupled to the crescent portion 104 and protrudes parallel to the base 103. And a box-shaped operation piece 105. The crescent portion 104 and the operation piece 105 are pivotally supported on the base 103 so as to be rotatable about the center of the crescent portion 104 as a fulcrum. Then, by rotating the crescent portion 104 with the operation piece 105, when the operation piece 105 is positioned on the crescent portion 104, the crescent portion 104 is engaged with the crescent receiver 102 and the crescent lock 100 is locked. (See FIG. 2A). On the other hand, when the operation piece 105 is positioned below the crescent portion 104, the engagement between the crescent portion 104 and the crescent receiver 102 is released, and the crescent lock 100 is unlocked. However, since such a crescent lock 100 is conventionally well-known, illustration and description of the detailed structure of the crescent lock body 101 are omitted. In the following, as shown in FIG. 2A, the position of the operation piece 105 (position above the crescent portion 104) when the crescent lock 100 is locked is “locking position”, and the crescent lock 100 is unlocked. The position of the operation piece 105 at that time (position below the crescent portion 104) will be referred to as “unlocked position”.

(実施形態１)
本実施形態の建具用施解錠検出装置(以下、検出装置と略す。)は、操作片105に取り付けられる磁石ブロック10と、他方の窓枠111に支持された窓ガラス112の屋内側の面に取り付けられる検出装置本体２とを備える。 (Embodiment 1)
The lock / unlock detection device for joinery (hereinafter abbreviated as a detection device) of this embodiment is provided on the indoor side surface of the magnet block 10 attached to the operation piece 105 and the window glass 112 supported by the other window frame 111. And a detector main body 2 to be attached.

磁石ブロック10は、図４に示すように磁気を遮蔽しない材料(例えば、合成樹脂)で箱形に形成され、内部に永久磁石１及び継鉄(ヨーク)14を収納する筐体11と、筐体11を操作片105に結び付ける紐体12と、筐体11を操作片105の表面に貼り付ける貼付部材13とを備える。   As shown in FIG. 4, the magnet block 10 is formed in a box shape from a material that does not shield magnetism (for example, synthetic resin), and includes a housing 11 that houses the permanent magnet 1 and a yoke 14 inside, and a housing. A string body 12 for connecting the body 11 to the operation piece 105 and an attaching member 13 for attaching the housing 11 to the surface of the operation piece 105 are provided.

筐体11は、一面(図４における下面)が開口した矩形箱状のボディ11Aと、開口を塞ぐようにボディ11Aに結合される矩形板状のカバー11Bとで構成される。また、筐体11には、紐体12が挿通される挿通孔11Cが左右方向に貫通されている。なお、紐体12は、電気ケーブルなどを結束するための結束バンドからなる。ただし、紐体12は結束バンドに限定されず、粘着テープや自己融着テープ、あるいは熱収縮チューブなどでも構わない。   The casing 11 is composed of a rectangular box-shaped body 11A having one surface opened (the lower surface in FIG. 4) and a rectangular plate-shaped cover 11B coupled to the body 11A so as to close the opening. Further, the housing 11 has an insertion hole 11C through which the string body 12 is inserted, penetrating in the left-right direction. The string body 12 includes a binding band for binding electric cables and the like. However, the string body 12 is not limited to a binding band, and may be an adhesive tape, a self-bonding tape, a heat shrinkable tube, or the like.

貼付部材13は、例えば、従来周知の両面テープからなり、筐体11の底面(図４における下面)に貼り付けられる。   The affixing member 13 is made of, for example, a conventionally known double-sided tape, and affixed to the bottom surface of the casing 11 (the lower surface in FIG. 4).

継鉄14は、鉄板などの強磁性体材料によって板状に形成され、筐体11の内底と永久磁石１の間及び永久磁石１とカバー11Bとの間に配設される。   The yoke 14 is formed into a plate shape by a ferromagnetic material such as an iron plate, and is disposed between the inner bottom of the housing 11 and the permanent magnet 1 and between the permanent magnet 1 and the cover 11B.

而して、一面側で筐体11に貼り付けられた貼付部材13の他面側を操作片105の側面(窓ガラス112と対向する面)に貼り付けた後、紐体12を操作片105に巻回して結束することによって、磁石ブロック10を操作片105に強固に取り付けることができる(図２(ａ)参照)。ただし、貼付部材13を操作片105に貼り付けて磁石ブロック10を仮固定し、検出装置本体２で正常に検知できることを確認した後に紐体12を結束して本固定することが望ましい。   Thus, after the other side of the affixing member 13 affixed to the housing 11 on one side is affixed to the side surface of the operation piece 105 (the surface facing the window glass 112), the string body 12 is attached to the operation piece 105. The magnet block 10 can be firmly attached to the operation piece 105 by being wound around and bound (see FIG. 2A). However, it is desirable that the sticking member 13 is stuck on the operation piece 105 to temporarily fix the magnet block 10 and after confirming that the detection device main body 2 can detect normally, the string body 12 is bound and finally fixed.

検出装置本体２は、図２(ａ)及び図３に示すように磁気検知部３、判定部４、制御部５、無線通信部６、電源用の電池７、これらを収納するケース８などを具備している。磁気検知部３は、１個の磁気センサ30と、永久磁石１の磁束を磁気センサ30に導く一対の磁気誘導体31とを有する(図２(ｂ)参照)。   As shown in FIGS. 2A and 3, the detection device main body 2 includes a magnetic detection unit 3, a determination unit 4, a control unit 5, a wireless communication unit 6, a battery 7 for power supply, a case 8 for storing these, and the like. It has. The magnetic detection unit 3 includes one magnetic sensor 30 and a pair of magnetic derivatives 31 that guide the magnetic flux of the permanent magnet 1 to the magnetic sensor 30 (see FIG. 2B).

本実施形態における磁気センサ30は、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成される。例えば、磁気センサ30は、複数の磁気抵抗素子と、磁気抵抗素子の抵抗値の変化を電気信号に変換して検知信号として出力する出力回路とが１チップに集積化され、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力する。このような磁気センサ30は、一般に、双方向２出力型のＭＲセンサＩＣとして市販されている。双方向２出力型のＭＲセンサＩＣは、双方向の磁界を各別に検知し、各方向毎に極性が異なる２種の電圧(検知信号)を出力する。なお、このような双方向２出力型のＭＲセンサＩＣについては、従来周知であるから詳細な構成の図示並びに説明は省略する。   The magnetic sensor 30 in the present embodiment is configured to detect a bidirectional magnetic field separately and to output detection signals having different polarities in each direction. For example, in the magnetic sensor 30, a plurality of magnetoresistive elements and an output circuit that converts a change in the resistance value of the magnetoresistive element into an electric signal and outputs it as a detection signal are integrated on one chip, and a bidirectional magnetic field is generated. Detection signals are detected separately, and detection signals having different polarities for each direction are output. Such a magnetic sensor 30 is generally commercially available as a bidirectional two-output MR sensor IC. The bidirectional 2-output type MR sensor IC detects a bidirectional magnetic field separately and outputs two types of voltages (detection signals) having different polarities in each direction. Since such a bi-directional two-output MR sensor IC is well known in the art, the detailed illustration and description thereof will be omitted.

磁気誘導体31は、磁気異方性を有する磁性体、例えば、電磁鋼板、フェライト、パーマロイ、アモルファス磁性体などで薄い板状に形成されている。ここで、本実施形態では、磁気誘導体31は、図２(ｂ)に示すように長方形と、長方形の一辺を下底とする台形とを組み合わせた多角形(六角形)の形状に形成されている。そして、一対の磁気誘導体31は、台形の上底を磁気センサ30に向け、且つ磁気センサ30を挟んで対向するように配置される。つまり、磁気誘導体31は、磁気センサ30から離れるにつれて磁界検知方向(図２(ｂ)における上下方向)と交差する方向(左右方向)の幅寸法が大きくなる形状に形成されていることになる。   The magnetic derivative 31 is formed in a thin plate shape with a magnetic material having magnetic anisotropy, for example, an electromagnetic steel plate, ferrite, permalloy, amorphous magnetic material, or the like. Here, in the present embodiment, the magnetic derivative 31 is formed in a polygonal (hexagonal) shape combining a rectangle and a trapezoid with one side of the rectangle as a bottom base, as shown in FIG. Yes. The pair of magnetic derivatives 31 are arranged so that the upper base of the trapezoid faces the magnetic sensor 30 and faces the magnetic sensor 30 therebetween. That is, the magnetic derivative 31 is formed in a shape in which the width dimension in the direction (horizontal direction) intersecting the magnetic field detection direction (vertical direction in FIG. 2B) increases with distance from the magnetic sensor 30.

判定部４は、磁気検知部３の検知信号を信号処理することで操作片105の変位位置(施錠位置と解錠位置)を判定する。ただし、判定部４における信号処理(判定処理)については、後述する。無線通信部６は、例えば、宅内に設置されるセキュリティ装置(図示せず)との間で電波を媒体とする無線通信を行う。制御部５は、判定部４の判定結果に対応した監視情報(クレセント錠100の施解錠状態)を、無線通信部６から送信される無線信号によってセキュリティ装置に送信する。そして、セキュリティ装置は、無線信号を受信することで検出装置の検出結果、すなわち、クレセント錠100の施解錠状態を取得し、それを音や光で報知(表示)する。ただし、このようなセキュリティ装置及びセキュリティ装置と検出装置を含むセキュリティシステムについては、従来周知であるから詳細な構成の図示及び動作の説明は省略する。   The determination unit 4 determines the displacement position (locking position and unlocking position) of the operation piece 105 by performing signal processing on the detection signal of the magnetic detection unit 3. However, signal processing (determination processing) in the determination unit 4 will be described later. For example, the wireless communication unit 6 performs wireless communication using radio waves as a medium with a security device (not shown) installed in the house. The control unit 5 transmits monitoring information (locked / unlocked state of the crescent lock 100) corresponding to the determination result of the determination unit 4 to the security device by a wireless signal transmitted from the wireless communication unit 6. Then, the security device acquires the detection result of the detection device, that is, the locked / unlocked state of the crescent lock 100 by receiving the radio signal, and notifies (displays) the result by sound or light. However, since such a security device and a security system including the security device and the detection device are well known in the art, detailed illustration of the configuration and description of the operation are omitted.

ケース８は、扁平な直方体形状の合成樹脂成形体からなり、両面テープなどを用いて窓ガラス112に貼り付けられている。また、ケース８は長手方向の一端側(図２(ａ)における下側)に磁気検知部３が収納され、長手方向における他端側(図２(ａ)における上側)に２つの電池(釦電池)７が収納されている。なお、判定部４、制御部５、無線通信部６はプリント配線板(図示せず)に実装されてケース８内に収納されている。ここで、図２(ａ)ではケース８の一部が取り除かれて外部に露出した状態を示しているが、実際には、磁気検知部３や電池７は外部に露出しない。   The case 8 is made of a flat, rectangular parallelepiped synthetic resin molding, and is attached to the window glass 112 using a double-sided tape or the like. In addition, the case 8 accommodates the magnetic detector 3 on one end side in the longitudinal direction (lower side in FIG. 2A), and two batteries (buttons) on the other end side in the longitudinal direction (upper side in FIG. 2A). Battery) 7 is housed. The determination unit 4, the control unit 5, and the wireless communication unit 6 are mounted on a printed wiring board (not shown) and housed in the case 8. Here, FIG. 2A shows a state in which a part of the case 8 is removed and exposed to the outside, but actually, the magnetic detection unit 3 and the battery 7 are not exposed to the outside.

次に、図１の波形図と図５のフローチャートを参照しながら、本実施形態の検出装置の動作を詳細に説明する。なお、図１は、横軸をクレセント錠100の操作片105の回転角(施錠位置を０°、解錠位置を１８０°とする。)とし、縦軸を磁気センサ30の検知信号(出力電圧)としている。   Next, the operation of the detection apparatus of this embodiment will be described in detail with reference to the waveform diagram of FIG. 1 and the flowchart of FIG. In FIG. 1, the horizontal axis represents the rotation angle of the operation piece 105 of the crescent lock 100 (the locking position is 0 ° and the unlocking position is 180 °), and the vertical axis is the detection signal (output voltage) of the magnetic sensor 30. ).

まず、永久磁石１(磁石ブロック10)と検出装置本体２の設置作業が完了した後、検出装置本体２に設けられたディップスイッチなどを使って初期設定が行われる(図５のステップ１)。この初期設定は、２種類の信号処理(第１モードと第２モード)のうちの何れか一方のモードを選択して判定部４に実行させるために行われる。   First, after the installation work of the permanent magnet 1 (magnet block 10) and the detector main body 2 is completed, initial setting is performed using a dip switch or the like provided in the detector main body 2 (step 1 in FIG. 5). This initial setting is performed in order to select one of the two types of signal processing (first mode and second mode) and cause the determination unit 4 to execute it.

例えば、永久磁石１の磁界方向が、磁気センサ30の正の磁界検知方向に一致している場合、クレセント錠100の操作片105が施錠位置から解錠位置に変位するときに、磁気センサ30の検知信号は、図１に実線Ｘで示すように変化する。つまり、操作片105が施錠位置にあるとき、検知信号は正の値となり、操作片105が施錠位置から解錠位置に向かって変位するにしたがって徐々に下降してゼロとなる。この場合、判定部４が第１モードに設定されていれば、磁気検知部３の出力電圧(検知信号)を正のしきい値(第１のしきい値Vth+)と比較する。そして、判定部４は、検知信号が第１のしきい値Vth+を上回っているときに施錠位置と判定し、検知信号が第１のしきい値Vth+を下回っているときに解錠位置と判定することができる(図５のステップ２〜ステップ５)。   For example, when the magnetic field direction of the permanent magnet 1 coincides with the positive magnetic field detection direction of the magnetic sensor 30, when the operation piece 105 of the crescent lock 100 is displaced from the locked position to the unlocked position, The detection signal changes as indicated by a solid line X in FIG. That is, when the operation piece 105 is in the locked position, the detection signal becomes a positive value, and gradually descends to zero as the operation piece 105 is displaced from the locked position toward the unlocked position. In this case, if the determination unit 4 is set to the first mode, the output voltage (detection signal) of the magnetic detection unit 3 is compared with a positive threshold value (first threshold value Vth +). Then, the determination unit 4 determines the locking position when the detection signal is above the first threshold value Vth +, and determines the unlocking position when the detection signal is below the first threshold value Vth +. (Step 2 to Step 5 in FIG. 5).

一方、永久磁石１の磁界方向が、磁気センサ30の負の磁界検知方向に一致している場合、クレセント錠100の操作片105が施錠位置から解錠位置に変位するときに、磁気センサ30の検知信号は、図１に破線Ｙで示すように変化する。つまり、操作片105が施錠位置にあるとき、検知信号は負の値となり、操作片105が施錠位置から解錠位置に向かって変位するにしたがって徐々に上昇してゼロとなる。この場合、判定部４が第２モードに設定されていれば、磁気検知部３の出力電圧(検知信号)を負のしきい値(第２のしきい値Vth-)と比較する。そして、判定部４は、検知信号が第２のしきい値Vth-を下回っているときに施錠位置と判定し、検知信号が第２のしきい値Vth-を上回っているときに解錠位置と判定することができる(図５のステップ２〜ステップ５)。   On the other hand, when the magnetic field direction of the permanent magnet 1 coincides with the negative magnetic field detection direction of the magnetic sensor 30, when the operation piece 105 of the crescent lock 100 is displaced from the locked position to the unlocked position, The detection signal changes as indicated by a broken line Y in FIG. That is, when the operation piece 105 is in the locking position, the detection signal has a negative value, and gradually rises to zero as the operation piece 105 is displaced from the locking position toward the unlocking position. In this case, if the determination unit 4 is set to the second mode, the output voltage (detection signal) of the magnetic detection unit 3 is compared with a negative threshold value (second threshold value Vth−). The determination unit 4 determines the locked position when the detection signal is below the second threshold value Vth−, and the unlocked position when the detection signal is above the second threshold value Vth−. (Step 2 to Step 5 in FIG. 5).

ところで、初期設定に不備があり、永久磁石１の磁界方向と磁気センサ30の磁界検知方向が一致してない、例えば、磁気センサ30の検知信号が図１に実線Ｘで示すように変化し、且つ判定部４が第２モードに設定されていると仮定する。このとき、判定部４は検知信号を第２のしきい値Vth-と比較するが、検知信号が負の値になることがないために施錠位置を誤判定(誤検出)する虞は無い。したがって、操作片105が施錠位置と解錠位置の何れにあっても検出装置本体２から施錠状態の判定結果が得られないので、施工者は、初期設定に不備があることが容易に判断できる。   By the way, there is a deficiency in the initial setting, and the magnetic field direction of the permanent magnet 1 and the magnetic field detection direction of the magnetic sensor 30 do not match. For example, the detection signal of the magnetic sensor 30 changes as indicated by the solid line X in FIG. It is assumed that the determination unit 4 is set to the second mode. At this time, the determination unit 4 compares the detection signal with the second threshold value Vth−. However, since the detection signal does not become a negative value, there is no possibility that the lock position is erroneously determined (false detection). Therefore, since the determination result of the locked state cannot be obtained from the detection device main body 2 regardless of whether the operation piece 105 is in the locked position or the unlocked position, the installer can easily determine that the initial setting is incomplete. .

ここで、磁気センサ30が双方向１出力型のＭＲセンサＩＣで構成されていると仮定する。なお、双方向１出力型のＭＲセンサＩＣは、磁界が負の方向に鎖交しているときは負の電圧を出力し、磁界が正の方向に鎖交しているときは正の電圧を出力する。   Here, it is assumed that the magnetic sensor 30 is composed of a bidirectional one-output MR sensor IC. The bidirectional single-output MR sensor IC outputs a negative voltage when the magnetic field is linked in the negative direction, and outputs a positive voltage when the magnetic field is linked in the positive direction. Output.

双方向１出力型のＭＲセンサＩＣからなる磁気センサ30は、クレセント錠100の操作片105が施錠位置から解錠位置に変位するときに、図６に実線Ｗで示すような検知信号を出力する。つまり、操作片105が施錠位置にあるとき、検知信号は正の値となり、操作片105が施錠位置から解錠位置に向かって変位するにしたがって徐々に下降し、やがて、極性(符号)が反転して負の値となる。そして、操作片105が施錠位置から離れるにつれて永久磁石１と磁気センサ30との距離が大きくなるため、検知信号は負の極大値を通過した後に徐々に上昇してゼロとなる。この場合、判定部４が第１モードに設定されていれば、磁気検知部３の出力電圧(検知信号)を正のしきい値(第１のしきい値Vth+)と比較し、検知信号が第１のしきい値Vth+を上回っているときに施錠位置と判定することができる。   The magnetic sensor 30 including the bidirectional one-output MR sensor IC outputs a detection signal as indicated by a solid line W in FIG. 6 when the operation piece 105 of the crescent lock 100 is displaced from the locked position to the unlocked position. . That is, when the operation piece 105 is in the locking position, the detection signal becomes a positive value, and gradually descends as the operation piece 105 is displaced from the locking position toward the unlocking position, and then the polarity (sign) is reversed. It becomes a negative value. Since the distance between the permanent magnet 1 and the magnetic sensor 30 increases as the operation piece 105 moves away from the locking position, the detection signal gradually rises to zero after passing the negative maximum value. In this case, if the determination unit 4 is set to the first mode, the output voltage (detection signal) of the magnetic detection unit 3 is compared with a positive threshold value (first threshold value Vth +), and the detection signal is The lock position can be determined when it exceeds the first threshold value Vth +.

また、双方向１出力型のＭＲセンサＩＣからなる磁気センサ30は、永久磁石１の磁界方向が負の磁界検知方向に一致している場合、クレセント錠100の操作片105が施錠位置から解錠位置に変位するときに、図６に破線Ｚで示すような検知信号を出力する。つまり、操作片105が施錠位置にあるとき、検知信号は負の値となり、操作片105が施錠位置から解錠位置に向かって変位するにしたがって徐々に上昇し、やがて、極性(符号)が反転して正の値となる。そして、操作片105が施錠位置から離れるにつれて永久磁石１と磁気センサ30との距離が大きくなるため、検知信号は正の極大値を通過した後に徐々に下降してゼロとなる。この場合、判定部４が第２モードに設定されていれば、磁気検知部３の出力電圧(検知信号)を負のしきい値(第２のしきい値Vth-)と比較し、検知信号が第２のしきい値Vth-を下回っているときに施錠位置と判定することができる。   Further, in the magnetic sensor 30 composed of the bidirectional single-output MR sensor IC, when the magnetic field direction of the permanent magnet 1 coincides with the negative magnetic field detection direction, the operation piece 105 of the crescent lock 100 is unlocked from the locking position. When the position is displaced, a detection signal as indicated by a broken line Z in FIG. That is, when the operation piece 105 is in the locked position, the detection signal becomes a negative value, and gradually rises as the operation piece 105 is displaced from the locked position toward the unlocked position, and eventually the polarity (sign) is reversed. And become a positive value. Since the distance between the permanent magnet 1 and the magnetic sensor 30 increases as the operation piece 105 moves away from the locking position, the detection signal gradually falls to zero after passing through the positive maximum value. In this case, if the determination unit 4 is set to the second mode, the output voltage (detection signal) of the magnetic detection unit 3 is compared with a negative threshold value (second threshold value Vth−), and the detection signal Can be determined as a locked position when the value is below the second threshold value Vth−.

ここで、初期設定に不備があり、永久磁石１の磁界方向と磁気センサ30の磁界検知方向が一致してない、例えば、磁気センサ30の検知信号が図６に実線Ｗで示すように変化し、且つ判定部４が第２モードに設定されていると仮定する。このとき、判定部４は検知信号を第２のしきい値Vth-と比較するので、検知信号が負の極大値となる付近で第２のしきい値Vth-を下回り、施錠位置を誤判定(誤検出)してしまう。その結果、施工者が初期設定の不備に気付かず、検出装置がそのまま使用されてしまう虞がある。   Here, the initial setting is incomplete, and the magnetic field direction of the permanent magnet 1 and the magnetic field detection direction of the magnetic sensor 30 do not match. For example, the detection signal of the magnetic sensor 30 changes as indicated by the solid line W in FIG. Assume that the determination unit 4 is set to the second mode. At this time, since the determination unit 4 compares the detection signal with the second threshold value Vth−, the detection signal falls below the second threshold value Vth− in the vicinity of the negative maximum value, and the lock position is erroneously determined. (False detection). As a result, the installer may not be aware of the initial setting deficiency and the detection device may be used as it is.

上述のように本実施形態の検出装置は、施錠位置と解錠位置の間を変位する錠100の操作片105に取り付けられる永久磁石１と、建具に取り付けられて磁界を検知するとともに検知した磁界の向き及び強さに応じた検知信号を出力する磁気検知部３とを備える。また、本実施形態の検出装置は、検知信号に応じて操作片105の変位位置を判定する判定部４を備える。磁気検知部３は、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成される。判定部４は、一方の極性の検知信号を第１のしきい値Vth+と比較する第１モードと、他方の極性の検知信号を第２のしきい値Vth-と比較する第２モードとを択一的に選択して実行する。そして、判定部４は、検知信号と第１のしきい値Vth+又は第２のしきい値Vth-との比較結果に応じて操作片105の変位位置を判定するように構成される。   As described above, the detection device according to the present embodiment detects the magnetic field detected and detected by the permanent magnet 1 attached to the operation piece 105 of the lock 100 that is displaced between the locked position and the unlocked position, and the fixture. And a magnetic detection unit 3 that outputs a detection signal corresponding to the direction and strength of the magnetic field. In addition, the detection device of the present embodiment includes a determination unit 4 that determines the displacement position of the operation piece 105 according to the detection signal. The magnetic detection unit 3 is configured to detect a bidirectional magnetic field separately and output detection signals having different polarities in each direction. The determination unit 4 performs a first mode in which the detection signal having one polarity is compared with the first threshold value Vth +, and a second mode in which the detection signal having the other polarity is compared with the second threshold value Vth−. Select and execute alternatively. Then, the determination unit 4 is configured to determine the displacement position of the operation piece 105 according to a comparison result between the detection signal and the first threshold value Vth + or the second threshold value Vth−.

本実施形態の検出装置では、磁気検知部３が双方向の磁界を検知するので、永久磁石１の磁界方向と磁界検知部３の磁界検知方向とを施工時に揃える必要が無くなり、施工時の作業性の向上を図ることができる。しかも、本実施形態の検出装置は、磁気検知部３が双方向２出力型の磁気センサ30を備えているので、双方向１出力型の磁気センサで生じる誤検出を抑制することができる。   In the detection apparatus of this embodiment, since the magnetic detection unit 3 detects a bidirectional magnetic field, it is not necessary to align the magnetic field direction of the permanent magnet 1 and the magnetic field detection direction of the magnetic field detection unit 3 at the time of construction. It is possible to improve the performance. In addition, since the magnetic detection unit 3 includes the bidirectional two-output magnetic sensor 30 in the detection device of the present embodiment, it is possible to suppress erroneous detection that occurs in the bidirectional one-output magnetic sensor.

また、本実施形態の検出装置において、永久磁石１の磁束を磁気検知部３(磁気センサ30)に導く磁気誘導体31を有し、磁気誘導体31が、磁気検知部３(磁気センサ30)の磁界検知方向に沿って磁気検知部３(磁気センサ30)を挟んだ両側に配置されることが好ましい。   Further, the detection device of the present embodiment includes a magnetic derivative 31 that guides the magnetic flux of the permanent magnet 1 to the magnetic detection unit 3 (magnetic sensor 30), and the magnetic derivative 31 is a magnetic field of the magnetic detection unit 3 (magnetic sensor 30). It is preferable that they are arranged on both sides of the magnetic detection unit 3 (magnetic sensor 30) along the detection direction.

本実施形態の検出装置では、磁気誘導体31が無い場合と比較して、磁気センサ30と鎖交する磁束を増やす(磁束密度を大きくする)ことができる。その結果、従来例よりも寸法の小さい(磁界の弱い)永久磁石１を使用しても従来例と同等の検出感度を維持することができる。   In the detection device of the present embodiment, the magnetic flux interlinking with the magnetic sensor 30 can be increased (the magnetic flux density is increased) as compared with the case where the magnetic derivative 31 is not provided. As a result, even if the permanent magnet 1 having a smaller dimension (weak magnetic field) than that of the conventional example is used, the detection sensitivity equivalent to that of the conventional example can be maintained.

また、磁気誘導体31は、磁気センサ30から離れるにつれて磁界検知方向(図２(ｂ)における上下方向)と交差する方向(左右方向)の幅寸法が大きくなる形状に形成されることが好ましい。これにより、磁気誘導体31の幅広の端部から入った磁束を幅狭の端部より磁気センサ30に鎖交させることができるので、磁気センサ30の検知感度を向上することができる。なお、磁気誘導体31が磁気異方性を有する磁性体で構成されている場合、磁化容易方向が磁気センサ30の磁界検知方向と一致するように磁気誘導体31が配置されることにより、磁気センサ30の検知感度をさらに向上することができる。   In addition, the magnetic derivative 31 is preferably formed in a shape in which the width dimension in the direction (horizontal direction) intersecting the magnetic field detection direction (vertical direction in FIG. 2B) increases with distance from the magnetic sensor 30. Thereby, since the magnetic flux entered from the wide end of the magnetic derivative 31 can be linked to the magnetic sensor 30 from the narrow end, the detection sensitivity of the magnetic sensor 30 can be improved. When the magnetic derivative 31 is made of a magnetic material having magnetic anisotropy, the magnetic derivative 31 is arranged so that the easy magnetization direction matches the magnetic field detection direction of the magnetic sensor 30. The detection sensitivity can be further improved.

(実施形態２)
本実施形態の検出装置は、磁気検知部３の構成に特徴があり、その他の構成については実施形態１と共通である。故に、実施形態１と共通の構成要素については図示並びに説明を省略し、本実施形態の特徴である磁気検知部３についてのみ説明する。 (Embodiment 2)
The detection device of the present embodiment is characterized by the configuration of the magnetic detection unit 3, and other configurations are the same as those of the first embodiment. Therefore, illustration and description of components common to the first embodiment are omitted, and only the magnetic detection unit 3 that is a feature of the present embodiment will be described.

本実施形態における磁気検知部３は、磁気抵抗素子と、磁気抵抗素子の抵抗値の変化を電気信号に変換して検知信号として出力する出力回路とが１チップに集積化され、単方向の磁界を検知して検知信号を出力するように構成される磁気センサ32を２つ備える。また、本実施形態における磁気検知部３は、２つの磁気センサ32の検知信号が互いに異なる極性となるように構成されることが好ましい。なお、このような磁気センサ32は、一般に、単方向１出力型のＭＲセンサＩＣとして市販されている。単方向１出力型のＭＲセンサＩＣは、単方向の磁界を検知し、磁界強度に応じた電圧信号(検知信号)を出力する。なお、このような単方向１出力型のＭＲセンサＩＣについては、従来周知であるから詳細な構成の図示並びに説明は省略する。   In the magnetic detection unit 3 in the present embodiment, a magnetoresistive element and an output circuit that converts a change in resistance value of the magnetoresistive element into an electrical signal and outputs it as a detection signal are integrated on one chip, and a unidirectional magnetic field And two magnetic sensors 32 configured to output a detection signal. In addition, the magnetic detection unit 3 in the present embodiment is preferably configured such that the detection signals of the two magnetic sensors 32 have different polarities. Such a magnetic sensor 32 is generally commercially available as a unidirectional one-output MR sensor IC. The unidirectional one-output MR sensor IC detects a unidirectional magnetic field and outputs a voltage signal (detection signal) corresponding to the magnetic field strength. Since such a unidirectional one-output MR sensor IC is well known in the art, detailed illustration and description thereof will be omitted.

磁気検知部３は、図７に示すように、一方(左側)の磁気センサ32の磁界検知方向(図中の上方向)と、他方(右側)の磁気センサ32の磁界検知方向(図中の下方向)とが互いに１８０°異なるように配置される。したがって、磁気検知部３は、永久磁石１の磁界方向と磁界検知方向が一致している方の磁気センサ32の出力電圧を検知信号として出力する。なお、操作片105の回転角と検知信号との関係は、実施形態１における磁気検知部３の正の検知信号と同一である(図１の実線Ｘ参照)。   As shown in FIG. 7, the magnetic detection unit 3 includes a magnetic field detection direction (upward in the figure) of one (left side) magnetic sensor 32 and a magnetic field detection direction (upward in the figure) of the other (right side) magnetic sensor 32. (Downward direction) are different from each other by 180 °. Therefore, the magnetic detection unit 3 outputs the output voltage of the magnetic sensor 32 in which the magnetic field direction of the permanent magnet 1 matches the magnetic field detection direction as a detection signal. The relationship between the rotation angle of the operation piece 105 and the detection signal is the same as the positive detection signal of the magnetic detection unit 3 in the first embodiment (see the solid line X in FIG. 1).

次に、本実施形態の検出装置の動作を説明する。なお、本実施形態においても、実施形態１と同様に初期設定が行われ、判定部４は、初期設定で選択されたモード(第１モード又は第２モード)を実行する。   Next, the operation of the detection apparatus of this embodiment will be described. Also in this embodiment, the initial setting is performed in the same manner as in the first embodiment, and the determination unit 4 executes the mode (first mode or second mode) selected by the initial setting.

例えば、永久磁石１の磁界方向が、何れか一方の磁気センサ32の磁界検知方向に一致している場合、磁気検知部３の検知信号は、クレセント錠100の操作片105が施錠位置から解錠位置に変位するにしたがって徐々に下降してゼロとなる。この場合、判定部４が第１モードに設定されていれば、磁気検知部３の検知信号を正のしきい値(第１のしきい値Vth+)と比較する。そして、判定部４は、検知信号が第１のしきい値Vth+を上回っているときに施錠位置と判定し、検知信号が第１のしきい値Vth+を下回っているときに解錠位置と判定することができる。   For example, when the magnetic field direction of the permanent magnet 1 coincides with the magnetic field detection direction of one of the magnetic sensors 32, the detection signal of the magnetic detection unit 3 is unlocked by the operation piece 105 of the crescent lock 100 from the locking position. It gradually descends to zero as it is displaced to the position. In this case, if the determination unit 4 is set to the first mode, the detection signal of the magnetic detection unit 3 is compared with a positive threshold value (first threshold value Vth +). Then, the determination unit 4 determines the locking position when the detection signal is above the first threshold value Vth +, and determines the unlocking position when the detection signal is below the first threshold value Vth +. can do.

一方、初期設定に不備があり、永久磁石１の磁界方向が、何れの磁気センサ32の磁界検知方向とも一致していない場合、磁気検知部３の検知信号はゼロのままとなる。したがって、判定部４は、操作片105の回転角に関わらず、常に解錠状態と判定することになるから、施工者が初期設定の不備に容易に気付くことができる。   On the other hand, when the initial setting is incomplete and the magnetic field direction of the permanent magnet 1 does not coincide with the magnetic field detection direction of any magnetic sensor 32, the detection signal of the magnetic detection unit 3 remains zero. Therefore, the determination unit 4 always determines the unlocked state regardless of the rotation angle of the operation piece 105, so that the installer can easily notice the deficiencies in the initial settings.

上述のように本実施形態の検出装置は、実施形態１と同様に、磁気検知部３が双方向の磁界を検知するので、永久磁石１の磁界方向と磁界検知部３の磁界検知方向とを施工時に揃える必要が無くなり、施工時の作業性の向上を図ることができる。しかも、本実施形態の検出装置は、磁気検知部３が単方向１出力型の２つの磁気センサ32を備えているので、双方向１出力型の磁気センサで生じる誤検出を抑制することができる。   As described above, in the detection apparatus according to the present embodiment, the magnetic detection unit 3 detects a bidirectional magnetic field, as in the first embodiment. Therefore, the magnetic field direction of the permanent magnet 1 and the magnetic field detection direction of the magnetic field detection unit 3 are determined. There is no need to prepare at the time of construction, and workability at the time of construction can be improved. In addition, in the detection device of the present embodiment, since the magnetic detection unit 3 includes the two unidirectional one output type magnetic sensors 32, it is possible to suppress false detections that occur in the bidirectional one output type magnetic sensor. .

(実施形態３)
本実施形態の検出装置は、磁気検知部３の構成に特徴があり、その他の構成については実施形態１又は２と共通である。故に、実施形態１又は２と共通の構成要素については図示並びに説明を省略し、本実施形態の特徴である磁気検知部３についてのみ説明する。 (Embodiment 3)
The detection device of the present embodiment is characterized by the configuration of the magnetic detection unit 3, and the other configurations are the same as those of the first or second embodiment. Therefore, illustration and description of components common to the first or second embodiment are omitted, and only the magnetic detection unit 3 that is a feature of the present embodiment will be described.

本実施形態における磁気検知部３は、双方向２出力型の磁気センサ30と、双方向１出力型の磁気センサ33と備える。ただし、双方向１出力型の磁気センサ33は、双方向２出力型の磁気センサ30と比べて、磁界の感度変動が小さいものとする。なお、感度変動とは、同じ強さの磁界に対する検知信号の信号レベル(電圧)の変動を意味する。   The magnetic detection unit 3 in this embodiment includes a bidirectional two-output magnetic sensor 30 and a bidirectional one-output magnetic sensor 33. However, it is assumed that the bidirectional single-output type magnetic sensor 33 has a smaller variation in the sensitivity of the magnetic field than the bidirectional two-output type magnetic sensor 30. Sensitivity fluctuation means fluctuation in the signal level (voltage) of the detection signal with respect to a magnetic field having the same strength.

磁気検知部３は、図８に示すように、図中左側に双方向２出力型の磁気センサ30が配置され、図中右側に双方向１出力型の磁気センサ33が配置され、それぞれの磁気センサ30，33の検知信号を判定部４へ各別に出力する。   As shown in FIG. 8, the magnetic detection unit 3 has a bidirectional two-output magnetic sensor 30 arranged on the left side in the drawing and a bidirectional one-output magnetic sensor 33 arranged on the right side in the drawing. The detection signals of the sensors 30 and 33 are output to the determination unit 4 separately.

次に、図９のフローチャートを参照して、本実施形態の検出装置の動作を説明する。なお、本実施形態においても、実施形態１と同様に初期設定が行われ、判定部４は、初期設定で選択されたモード(第１モード又は第２モード)を実行する(ステップ１)。   Next, the operation of the detection apparatus of this embodiment will be described with reference to the flowchart of FIG. In this embodiment, the initial setting is performed in the same manner as in the first embodiment, and the determination unit 4 executes the mode (first mode or second mode) selected in the initial setting (step 1).

例えば、永久磁石１の磁界方向が、磁気センサ30の正の磁界検知方向に一致している場合、クレセント錠100の操作片105が施錠位置から解錠位置に変位するにしたがって徐々に下降してゼロとなる。この場合、判定部４が第１モードに設定されていれば、磁気センサ30の検知信号を正のしきい値(第１のしきい値Vth+)と比較する。そして、判定部４は、検知信号が第１のしきい値Vth+を下回っているときに解錠位置と判定する(図９のステップ２，３，６)。   For example, when the magnetic field direction of the permanent magnet 1 coincides with the positive magnetic field detection direction of the magnetic sensor 30, the operation piece 105 of the crescent lock 100 is gradually lowered as the operation piece 105 is displaced from the locked position to the unlocked position. It becomes zero. In this case, if the determination unit 4 is set to the first mode, the detection signal of the magnetic sensor 30 is compared with a positive threshold value (first threshold value Vth +). And the determination part 4 determines with an unlocking position, when the detection signal is less than 1st threshold value Vth + (step 2, 3, 6 of FIG. 9).

一方、判定部４は、検知信号が第１のしきい値Vth+を上回っていれば、磁気センサ33の検知信号を第１のしきい値Vth+と比較する(図９のステップ４)。そして、判定部４は、磁気センサ33の検知信号が第１のしきい値Vth+を上回っていれば施錠位置と判定し(図９のステップ５)、磁気センサ33の検知信号が第１のしきい値Vth+を下回っていれば解錠位置と判定する(図９のステップ６)。   On the other hand, if the detection signal exceeds the first threshold value Vth +, the determination unit 4 compares the detection signal of the magnetic sensor 33 with the first threshold value Vth + (step 4 in FIG. 9). If the detection signal of the magnetic sensor 33 exceeds the first threshold value Vth +, the determination unit 4 determines that the position is locked (step 5 in FIG. 9), and the detection signal of the magnetic sensor 33 is the first signal. If it is below the threshold value Vth +, it is determined that the position is unlocked (step 6 in FIG. 9).

而して、双方向２出力型の磁気センサ30は、双方向１出力型の磁気センサ33に比較して感度変動が大きい。そこで、本実施形態の検出装置においては、判定部４が、双方向２出力型の磁気センサ30の検知信号だけでなく、双方向２出力型よりも感度変動が相対的に小さい双方向１出力型の磁気センサ33の検知信号に基づいて施解錠を検出(判定)している。その結果、判定部４が双方向２出力型の磁気センサ30の検知信号のみから施解錠を検出する場合と比較して、検出精度の向上を図ることができる。   Thus, the bidirectional two-output type magnetic sensor 30 has a larger sensitivity fluctuation than the bidirectional one-output type magnetic sensor 33. Therefore, in the detection apparatus of the present embodiment, the determination unit 4 not only detects the detection signal of the bidirectional two-output type magnetic sensor 30, but also the bidirectional one output in which the sensitivity fluctuation is relatively smaller than that of the bidirectional two-output type. Locking / unlocking is detected (determined) based on the detection signal of the magnetic sensor 33 of the mold. As a result, the detection accuracy can be improved as compared with the case where the determination unit 4 detects locking / unlocking only from the detection signal of the bidirectional two-output type magnetic sensor 30.

ところで、実施形態１〜３における磁気センサ30をホールＩＣで構成しても構わない。ホールＩＣとは、ホール素子と、ホール素子の出力を電気信号に変換して検知信号として出力する出力回路とが１チップに集積化されたものである。ただし、ホールＩＣは、ホール素子が実装される基板の法線方向が磁界の検知方向となるため、ＭＲセンサＩＣとは設置される向きが異なる場合がある。なお、このようなホールＩＣについては、従来周知であるから詳細な構成の図示並びに説明は省略する。   By the way, you may comprise the magnetic sensor 30 in Embodiment 1-3 in Hall IC. The Hall IC is a device in which a Hall element and an output circuit that converts the output of the Hall element into an electrical signal and outputs it as a detection signal are integrated on one chip. However, since the normal direction of the substrate on which the Hall element is mounted is the detection direction of the magnetic field, the Hall IC may be installed in a different direction from the MR sensor IC. Since such a Hall IC is well known in the art, detailed illustration and description of the configuration will be omitted.

１ 永久磁石
２ 検出装置本体
３ 磁気検知部
４ 判定部 DESCRIPTION OF SYMBOLS 1 Permanent magnet 2 Detection apparatus main body 3 Magnetic detection part 4 Judgment part

Claims (7)

建物の出入口や窓に設けられる建具を施錠する錠の施解錠を検出する建具用施解錠検出装置であって、施錠位置と解錠位置の間を変位する前記錠の操作片に取り付けられる永久磁石と、前記建具に取り付けられて磁界を検知するとともに検知した磁界の向き及び強さに応じた検知信号を出力する磁気検知部と、前記検知信号に応じて前記操作片の変位位置を判定する判定部とを備え、
前記磁気検知部は、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成され、
前記判定部は、一方の極性の前記検知信号を第１のしきい値と比較する第１モードと、他方の極性の前記検知信号を第２のしきい値と比較する第２モードとを択一的に選択して実行し、前記検知信号と前記第１のしきい値又は前記第２のしきい値との比較結果に応じて前記操作片の変位位置を判定するように構成されることを特徴とする建具用施解錠検出装置。 A locking / unlocking detection device for a joinery for detecting locking / unlocking of a lock for locking a fitting provided at a doorway or a window of a building, wherein the permanent magnet is attached to an operation piece of the lock that is displaced between the locking position and the unlocking position. And a magnetic detection unit that is attached to the joinery and detects a magnetic field and outputs a detection signal corresponding to the direction and strength of the detected magnetic field, and a determination for determining a displacement position of the operation piece according to the detection signal With
The magnetic detection unit is configured to detect a bidirectional magnetic field separately and output detection signals having different polarities in each direction,
The determination unit selects a first mode in which the detection signal of one polarity is compared with a first threshold and a second mode in which the detection signal of the other polarity is compared with a second threshold. It is selected and executed, and is configured to determine a displacement position of the operation piece according to a comparison result between the detection signal and the first threshold value or the second threshold value. A lock / unlock detection device for joinery. 前記磁気検知部は、複数の磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成されていることを特徴とする請求項１記載の建具用施解錠検出装置。   In the magnetic detection unit, a plurality of magnetoresistive elements and an output circuit that converts a change in resistance value of the magnetoresistive elements into an electric signal and outputs the electric signal as a detection signal are integrated on one chip, and a bidirectional magnetic field 2. The lock / unlock detection apparatus for joinery according to claim 1, wherein the detection is performed separately, and detection signals having different polarities for each direction are output. 前記磁気検知部は、磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、単方向の磁界を検知して検知信号を出力するように構成される磁気センサを２つ備え、前記各磁気センサの検知信号が互いに異なる極性となるように構成されていることを特徴とする請求項１記載の建具用施解錠検出装置。   The magnetic detection unit integrates a magnetoresistive element and an output circuit that converts a change in resistance value of the magnetoresistive element into an electric signal and outputs the electric signal as a detection signal, and detects a unidirectional magnetic field. 2. The fitting device according to claim 1, wherein two magnetic sensors configured to output detection signals are provided, and the detection signals of the respective magnetic sensors have different polarities. Locking / unlocking detection device. 前記磁気検知部は、２つの磁気センサを備え、第１の前記磁気センサは、複数の磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、双方向の磁界を各別に検知し、且つ各方向毎に極性が異なる検知信号を出力するように構成され、第２の前記磁気センサは、複数の磁気抵抗素子と、前記磁気抵抗素子の抵抗値の変化を電気信号に変換して前記検知信号として出力する出力回路とが１チップに集積化され、双方向の磁界を各別に検知し、且つ各方向について極性の等しい検知信号を出力するように構成され、
前記判定部は、前記第１及び第２の磁気センサの検知信号に基づいて前記操作片の変位位置を判定するように構成されることを特徴とする請求項１記載の建具用施解錠検出装置。 The magnetic detection unit includes two magnetic sensors, and the first magnetic sensor converts a plurality of magnetoresistive elements and a change in resistance value of the magnetoresistive elements into an electric signal and outputs the electric signal as the detection signal. And an output circuit integrated on a single chip, configured to detect bidirectional magnetic fields separately and to output detection signals having different polarities in each direction, and the second magnetic sensor includes a plurality of magnetic sensors. A resistive element and an output circuit that converts a change in the resistance value of the magnetoresistive element into an electrical signal and outputs it as the detection signal are integrated on one chip, and detects a bidirectional magnetic field separately, and in each direction Is configured to output detection signals of equal polarity with respect to
2. The joinery lock / unlock detection apparatus for joinery according to claim 1, wherein the determination unit is configured to determine a displacement position of the operation piece based on detection signals of the first and second magnetic sensors. . 前記永久磁石の磁束を前記磁気検知部に導く磁気誘導体を有し、前記磁気誘導体は、前記磁気検知部の磁界検知方向に沿って前記磁気検知部を挟んだ両側に配置されることを特徴とする請求項１〜４の何れか１項に記載の建具用施解錠検出装置。   It has a magnetic derivative that guides the magnetic flux of the permanent magnet to the magnetic detection unit, and the magnetic derivative is disposed on both sides of the magnetic detection unit along the magnetic field detection direction of the magnetic detection unit. The locking / unlocking detection apparatus for joinery according to any one of claims 1 to 4. 前記磁気誘導体は、前記磁気検知部から離れるにつれて前記磁界検知方向と交差する方向の幅寸法が大きくなる形状に形成されることを特徴とする請求項５記載の建具用施解錠検出装置。   The lock / unlock detection apparatus for joinery according to claim 5, wherein the magnetic derivative is formed in a shape in which a width dimension in a direction intersecting the magnetic field detection direction increases as the distance from the magnetic detection unit increases. 前記磁気誘導体は、前記磁気検知部と対向する対向辺を有する形状に形成されることを特徴とする請求項５又は６記載の建具用施解錠検出装置。   The lock / unlock detection apparatus for joinery according to claim 5 or 6, wherein the magnetic derivative is formed in a shape having an opposite side facing the magnetic detection unit.
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