JP2012252867A - Open window detection device of double sliding window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an open window detection device of a double sliding window, capable of reducing costs required for assembly and use components and improving reliability without causing mechanical failure due to long term use.SOLUTION: On a window frame in the vicinity of an overlapping part 93 of an inside window 91 and an outside window 92 in a fully closed state, two changeover type reed switches 1 having two auxiliary magnets 2 opposite in a magnetic pole direction to each other annexed thereto, are provided at an interval. An operation magnet 3 is provided in each of the parts of the inside window 91 and the outside window 92 facing the two changeover type reed switches 1 in the fully closed state, respectively. Normally-opened contacts 1a of the two changeover type reed switches 1 are connected in series and are connected to terminals 4 respectively, and the magnetic pole direction of the operation magnet 3 in the fully closed state is set to be opposite to that of the auxiliary magnet 2 annexed to the changeover type reed switch 1 which the operation magnet 3 faces.

Description

  The present invention relates to a security detection device that is installed in a sliding window and operates when either one or both of an inner window and an outer window are opened.

  A typical window consists of a window frame in which an aluminum frame is formed in a rectangular shape, and an inner window and an outer window that are fitted in the window frame so as to be openable and closable in a lateral direction, and a glass plate is fitted into these windows. It is a thing.

  An intruder, such as a thief, can open the sliding window by breaking and unlocking the glass of the crescent lock part of the sliding window.

  As shown in FIG. 3 (a), a reed switch 6 is provided at each of the left and right ends of the window frame 8 as an opening detection device that issues an alarm when the sliding window is opened as described above. When the magnet 7 is attached to each of the outer windows 92 and the windows are closed, the inner window 91 and the magnets 7 of the outer window 92 face the reed switches 6 provided on the left and right sides of the window frame 8, The reed switch 6 is closed by the magnetic force.

  The window opening detection device configured as described above is installed in each window, and all the reed switches 6 are connected in series and energized. When all the windows are closed, all the reed switches 6 connected in series form a closed circuit and can be energized. However, as shown in FIG. 3B, any one of the windows 92 is opened. Then, since the opposing magnet 7 is separated from the reed switch 6, the magnetic force is weakened, the reed switch 6 is opened, and energization becomes impossible and an alarm is issued.

  In the opening detection device shown in FIG. 3, since the two reed switches 6 are separated from each other, it is troublesome at the time of wiring work. Therefore, as shown in FIG. Two reed switches 6 are provided in one place in the vicinity of the position facing the overlapping portion 93 between the inner window 91 and the outer window 92, and the inner window 91 and the outer window 92 facing the two reed switches 6 in the fully closed state. It is conceivable to provide a magnet 7 at each position.

  However, as shown in FIG. 4B, when the two windows are opened so as to form gaps on both the left and right sides of the inner window 91 and the outer window 92, the two magnets 7 face the two reed switches 6, respectively. Therefore, the same state as that in which all the windows are closed is formed.

  Therefore, two magnets with opposite magnetic pole directions are attached to the inner and outer windows, and two reed switches are provided with rotary magnets to identify the magnetic pole directions of the inner and outer windows. Patent Document 1 below discloses a sliding window opening detection device configured so that an alarm does not stop even when the state shown in FIG.

JP 2004-12385 A

  In such a conventional sliding window opening detection device, the reed switch is provided with a rotating rotary magnet, so that the cost required for assembly and parts used is high, and mechanical failure occurs due to long-term use. It sometimes occurred.

  Therefore, the sliding window opening detection device of the present invention has been conceived in order to solve the problems of such a conventional window detection device.

  The sliding window opening detection device according to the present invention includes two auxiliary magnets each having two opposite magnets with opposite magnetic pole directions attached to the window frame in the vicinity of the overlapping portion of the inner window and the outer window in the fully closed state. Switch-type reed switches are provided at intervals, and magnets for operation are provided on the inner window and the outer window, respectively, facing the two switch-type reed switches in the fully closed state, and the two switch-type reed switches are normally opened. The contact is connected in series and connected to the terminal, and the direction of the magnetic pole of the operating magnet in the fully closed state is set opposite to the direction of the magnetic pole of the auxiliary magnet attached to the opposite switching type reed switch. It is.

  According to the sliding window opening detection device of the present invention, it is possible to reduce the cost required for assembly and parts to be used by using a switching type reed switch provided with a magnet, and mechanical failure due to long-term use. The reliability can be improved without causing any problems.

Schematic diagram showing an embodiment of a sliding window opening detection device of the present invention, Schematic diagram for explaining the operating principle of the sliding window opening detection device of the present invention, Explanatory drawing for demonstrating an example of the installation state of the opening detection apparatus in the conventional sliding window, It is explanatory drawing for demonstrating another example to the installation state of the window opening detection apparatus in the conventional sliding window.

  In the sliding window opening detection device of the present invention, a switching type reed switch is used. As shown in FIG. 2 (a), the switching type reed switch 1 is composed of a magnetic lead 1c, a magnetic normally open contact 1a, and a non-magnetic normally closed contact 1b. The normally closed contact 1b of the nonmagnetic material is turned OFF and the normally open contact 1a of the magnetic material is turned ON.

  As shown in FIG. 2B, when the auxiliary magnet 2 is previously attached to the switching type reed switch 1 and a magnetic field is applied, the normally closed contact 1b is turned off and the normally opened contact 1a is turned on. .

  When the operating magnet 3 is brought close to the switching reed switch 1 in the state where the normally closed contact 1b is OFF and the normally open contact 1a is ON by the magnetic field of the auxiliary magnet 2 as shown in FIG. Thus, when the direction of the magnetic poles of the auxiliary magnet 2 and the operating magnet 3 is set in the same direction, the magnetic flux passing through the switching type reed switch 1 is strengthened, so that the normally open contact 1a remains ON. It does not change.

  However, as shown in FIG. 2 (d), when the operating magnet 3 having a magnetic pole in the direction opposite to the direction of the magnetic pole of the auxiliary magnet 2 is brought close to the switching reed switch 1 provided with the auxiliary magnet 2, the switching type. Since the magnetic flux passing through the reed switch 1 is canceled and weakened, the normally closed contact 1b is turned ON and the normally open contact 1a is turned OFF.

  The sliding window opening detection device of the present invention is based on the operation principle described above, and as shown in FIG. 1, auxiliary devices are provided in the vicinity of both ends of an elongated casing 5 made of a nonmagnetic material. Two switchable reed switches 1 with magnets 2 are provided apart. And the direction of the magnetic pole of these two auxiliary magnets 2 is set to the opposite direction.

  The normally open contacts 1b of the two switch-type reed switches 1 are connected in series and coupled to the two terminals 4. This terminal 4 is a terminal for drawing the electric wire out of the housing 5.

  As shown in FIG. 1A, an open window detection unit housed in the housing 5 is installed in the vicinity of the overlapping portion 93 of the inner window 91 and the outer window 92 in the fully closed state.

  In the fully closed state, the operation magnets 3 are respectively attached to the positions of the inner window 91 and the outer window 92 facing the two switchable reed switches 1 in the housing 5. The direction of the magnetic pole of the operating magnet 3 is set in the direction opposite to the direction of the magnetic pole of the auxiliary magnet 2 attached to the two switching reed switches 1.

  In the fully closed state, the normally open contact 1a of the two switchable reed switches 1 is closed to form a closed circuit between the two terminals 4. When the inner window 91 or the outer window 92 is opened, the window operating magnet 3 moves away from the opening detection unit, so that the normally closed setting 1b of the switching type reed switch 1 is closed and the normally open contact 1a is opened. During 4 the circuit is opened and an alarm can be issued.

  As shown in FIG. 1B, both windows are opened so as to form gaps on both the left and right sides of the inner window 91 and the outer window 92, and two operating magnets 3 are provided in the two switchable reed switches 1. Even if they face each other, the direction of the magnetic pole of the auxiliary magnet 2 of the switching reed switch 1 and the direction of the magnetic pole of the window operating magnet 3 are the same, so the normally closed setting 1b of the switching reed switch 1 is opened. The normally open contact 1a is kept closed and the contacts 1a and 1b are not reversed.

  As described above, the switching type reed switch 1 provided with the auxiliary magnet 2 can be operated by identifying the direction of the magnetic poles of the approaching operation magnet 3.

  In the fully closed state, the distance between the switching reed switch 1 provided with the auxiliary magnet 2 and the operating magnet 3 is narrow in the inner window 91 and wide in the outer window 92, and acts on the switching reed switch 1. Since the strength of the magnetic field of the operating magnet 3 is different, a large or strong operating magnet 3 is used in the outer window 92.

DESCRIPTION OF SYMBOLS 1 Switch type reed switch 2 Auxiliary magnet 3 Operation magnet 4 Terminal 5 Case 6 Reed switch 7 Magnet 8 Window frame
91 Inside window
92 Outside window

Claims (1)

Two switchable reed switches with two auxiliary magnets with opposite magnetic poles attached to the window frame in the vicinity of the overlap between the inner window and the outer window in the fully closed state are provided at intervals,
A magnet for operation is provided on each of the inner window and the outer window facing the two switch-type reed switches in the fully closed state,
Connect the normally open contacts of the two switchable reed switches in series and connect them to the terminals.
The sliding window opening detection device characterized in that the direction of the magnetic pole of the operating magnet in the fully closed state is set in the direction opposite to the direction of the magnetic pole of the auxiliary magnet attached to the opposite switching type reed switch. .

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