JP2013044217A - Lock/unlock sensor for window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock/unlock sensor for a window which can detect both a lock/unlock state and an open/close state and can be miniaturized.SOLUTION: A lock/unlock sensor for a window includes: a first magnet 41 which is fixed to an operating lever 23 of a crescent lock 2; a body block 1 which is fixed to one side of a part to be locked; and a second magnet 42 which is fixed to the other side of the part to be locked so that the magnet pole direction thereof intersects with that of the first magnet 41. The body block 1 has a magnetic sensor 11 which outputs an electric signal according to a magnetic flux direction and a magnetic flux density. A lock/unlock state is determined using the magnetic flux generated by the first magnet 41, and an open/close state is determined using the magnetic flux generated by the second magnet 42. Miniaturization can be performed in comparison with a case where two sets of a magnet and a reed switch are used.

Description

  The present invention relates to a window locking / unlocking sensor.

  2. Description of the Related Art Conventionally, a window locking / unlocking sensor that detects a locking / unlocking state of a crescent lock used for locking a sliding window or the like has been provided (see, for example, Patent Document 1).

  FIG. 7 shows an example of this type of window locking / unlocking sensor.

  The crescent lock 2 includes a base 21 fixed to one side of a portion to be locked, a hook 22 fixed to the other side of the portion to be locked, and an operation lever 23 rotatably connected to the base 21. Is provided. That is, when the operation lever 23 is rotated to a predetermined locking position in a state where a portion to be locked (for example, a sliding door) is closed, the operation lever 23 is hooked on the hook 22 (that is, the hook 22 is locked). Is achieved, and the opening of the part to be locked is prohibited. Specifically, for example, the part to be locked is a pair of sliding doors, the base 21 is fixed to the window frame 31 of the sliding door on the indoor side, and the hook 22 is fixed to the sliding door on the outdoor side. The There is also a crescent lock 2 that does not have the hook 22 as described above and is locked by the operation lever 23 being caught by a window frame or the like.

  The window unlocking sensor includes a first magnet 41 fixed to the operation lever 23 and the operation lever 23 in the locked position on the same side as the base 21 (in the above example, the sliding door on the indoor side) among the parts to be locked. The first reed switch 161 is fixed to a position close to the first magnet 41 (for example, the frame 31). That is, when the operation lever 23 is in the locking position, the first reed switch 161 is switched on and off by the proximity of the first magnet 41, and hence the crescent lock 2 is locked and unlocked (hereinafter simply referred to as “locking and unlocking state”). ) Can be detected based on the on / off state of the first reed switch 161.

  Furthermore, the window locking / unlocking sensor of FIG. 7 includes a second magnet 42 fixed to, for example, the glass portion 32 on the side different from the base 21 (in the above example, the sliding door on the outdoor side) of the portion to be locked, The second reed switch 162 fixed at a position close to the second magnet 42 in a state where the part to be locked is closed on the same side as the base 21 (the sliding door on the indoor side in the above example) among the parts to be locked. Is provided. That is, when the part to be locked is closed, the second reed switch 162 is switched on and off by the proximity of the second magnet 42, so the open / closed state of the part to be locked (hereinafter simply referred to as "open / closed state"). Can be detected based on the on / off state of the second reed switch 162.

JP-A-6-309572

  However, in order to prevent the reed switches 161 and 162 from being operated by the wrong magnets 41 and 42, it is necessary to sufficiently increase the distance between the magnets 41 and 42 and the distance between the reed switches 161 and 162, respectively. There is. For this reason, the main body block 1 for holding the reed switches 161 and 162 has been enlarged.

  The present invention has been made in view of the above reasons, and an object thereof is to provide a window locking / unlocking sensor that can detect both the locking / unlocking state and the open / closed state and can be downsized. It is in.

  The window locking / unlocking sensor of the present invention has a base fixed to one side of a part to be locked and an operation lever rotatably connected to the base, and the part to be locked is closed. A window locking / unlocking sensor for detecting a locking / unlocking state of a crescent lock that prohibits opening of a portion to be locked by the operation lever rotated to a predetermined locking position in a state, and is fixed to the operation lever. One magnet, a second magnet fixed to the other side of the part to be locked in a direction in which the magnetic pole direction intersects the magnetic pole direction of the first magnet, and a main body block fixed to one side of the part to be locked The main body block outputs a magnetic sensor according to the direction and magnetic flux density of the magnetic flux, and based on the output of the magnetic sensor, whether or not the operating lever is in the locked position. Solution A determination unit that determines a state opening / closing state and an opening / closing state indicating whether or not the part to be locked is closed, and the determination unit is configured to determine whether the operation lever is in the locking position. The locked / unlocked state is determined based on the magnetic flux density in the same direction as the magnetic flux generated by one magnet, and the open / closed state is determined based on the magnetic flux density in the same direction as the magnetic flux generated by the second magnet. It is characterized by.

  Further, another window locking / unlocking sensor of the present invention includes a base fixed to one side of a part to be locked, and an operation lever rotatably connected to the base, and the part to be locked A locking / unlocking sensor for a window for detecting a locking / unlocking state of a crescent lock that prohibits opening of a portion to be locked by the operation lever rotated to a predetermined locking position in a closed state, and A magnet fixed to the operating lever in a direction crossing a magnetic pole direction with a rotation axis of the operating lever, and a main body block fixed to the other side of the part to be locked, the main body block having a direction of magnetic flux A magnetic sensor that outputs an electrical signal according to the magnetic flux density, and a locking / unlocking shape indicating whether or not the operating lever is in the locking position based on the direction of the magnetic flux detected by the magnetic sensor With determining, on the basis of the density of the detected magnetic flux by the magnetic sensor, characterized by comprising a determination unit configured to determine whether or not the opening and closing states site to be the locking it is closed.

  In the window locking / unlocking sensor described above, the determination unit prohibits the opening of the portion where the operation lever is locked in the locking / unlocking state if the deviation between the direction of the magnetic flux and the predetermined direction is within a predetermined range. If the deviation is larger than the upper limit value of the predetermined range, the unlocking state prohibits the opening of the part where the operation lever is locked. If the deviation is smaller than the lower limit value of the predetermined range, the locking / unlocking state prohibits the operation lever from opening the part to be locked. It may be determined that the locked state is certain.

  The window locking / unlocking sensor includes a setting input unit for inputting an instruction to change the determination criterion in the determination unit, and the determination unit determines a determination criterion according to an input to the setting input unit. It may be changed.

  Furthermore, in the above-described window locking / unlocking sensor, the magnet may be provided with a display indicating a magnetic pole direction.

  In the window locking / unlocking sensor, the magnetic sensor may include at least one of a Hall element, a magnetoresistive element, and a magnetoimpedance element.

  According to the present invention, the first magnet and the second magnet whose magnetic pole directions intersect each other are used for the determination of the unlocked state and the open / closed state, respectively, or the direction of the magnetic flux is used for the determination of the unlocked state. By using the magnetic flux density for the determination of the open / close state, both the unlocked state and the open / close state can be detected. Further, the size can be reduced as compared with the case where two magnetic sensors whose outputs do not depend on the direction of the magnetic flux are used.

It is explanatory drawing which shows embodiment of this invention. It is a block diagram which shows the same as the above. It is explanatory drawing which shows Embodiment 2 of this invention. It is a block diagram which shows the example of a change same as the above. It is explanatory drawing which shows another example of a change same as the above. (A) (b) is a front view which shows the example of the magnet in each same as the above. It is explanatory drawing which shows a prior art example.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(Embodiment 1)
Since the basic configuration of this embodiment is the same as the example of FIG. 7, the description of the common parts is omitted.

  In the present embodiment, as shown in FIG. 1, the first magnet 41 fixed to the operation lever 23 and the side to be locked on the side different from the base 21 (for example, the glass portion 32 of the sliding door on the outdoor side). The fixed 2nd magnet 42 and the main body block 1 fixed to the same side as the base 21 among the parts to be locked (for example, the frame 31 of the sliding door on the indoor side) are provided.

  As shown in FIG. 2, the main body block 1 includes a magnetic sensor 11 and a determination unit 12 that determines a locked / unlocked state and an open / closed state based on the output of the magnetic sensor 11.

  Further, the main body block 1 has a wireless communication unit 13 as a notification unit that performs a notification operation of transmitting a predetermined wireless signal to an external device (not shown) when the unlocking state is detected by the determination unit 12; And a control unit 14 that controls the wireless communication unit 13 based on the output of the determination unit 12.

  When the determination unit 12 determines the unlocked state or the open state, the control unit 14 controls the wireless communication unit 13 to perform the notification operation. The determination unit 12 and the control unit 14 can be realized by a microcomputer, for example.

  For example, the external device performs notification by sound or light when the wireless signal is received.

  In addition, in place of or in addition to the wireless communication unit 13 as described above, the notification unit includes an electric circuit for performing notification by sound having a buzzer or a speaker, or a light-emitting element such as a light-emitting diode. You may provide the electric circuit which alert | reports.

  In addition, the magnetic pole direction of the second magnet 42 is set to intersect the magnetic pole direction of the first magnet 41. In the present embodiment, the magnetic pole direction of the first magnet 41 is a direction parallel to the rotation axis of the operation lever 23 with respect to the base 21 (left-right direction in FIG. 1), and the magnetic pole direction of the second magnet 42 is orthogonal to the rotation axis. Direction (vertical direction in FIG. 1).

  Further, the magnetic sensor 11 outputs an electrical signal corresponding to the direction of the magnetic flux and the magnetic flux density. Specifically, the magnetic sensor 11 includes an element that selectively detects the magnetic flux in the horizontal direction in FIG. 1 generated by the first magnet 41 and the magnetic flux in the vertical direction in FIG. 1 generated by the second magnet 42. A combination with an element that selectively detects is used. As said element, a Hall element, a magnetoresistive element, and a magneto-impedance element can be used, for example.

  Based on the density of magnetic flux in the same direction as the magnetic flux generated by the first magnet 41 (left-right direction in FIG. 1), the determination unit 12 is in the unlocked state (that is, whether the operation lever 23 is in the locked position). Determine. Specifically, the magnetic flux density is compared with a predetermined threshold value (hereinafter referred to as “locking determination threshold value”). If the magnetic flux density is equal to or higher than the locking determination threshold value, the operation lever 23 is in the locking position. If the magnetic flux density is less than the lock determination threshold, it is determined that the operation lever 23 is not in the unlocked position. In order to increase the accuracy of the determination as described above, the position of the first magnet 41 is as close as possible to the magnetic sensor 11 in the locked state, and as far as possible from the rotation axis of the operation lever 23. It is desirable to be in position.

  In addition, the determination unit 12 closes the open / closed state (that is, the window that is locked) based on the magnetic flux density in the same direction as the magnetic flux generated by the second magnet 42 (vertical direction in FIG. 1). Whether or not). Specifically, the magnetic flux density is compared with a predetermined threshold value (hereinafter referred to as “open / close determination threshold value”), and if the magnetic flux density is equal to or higher than the open / close determination threshold value, the closed state where the window is closed If the density of the magnetic flux is less than the open / close determination threshold, it is determined that the window is open. In order to increase the accuracy of the determination as described above, it is desirable that the position of the second magnet 42 be a position that is as close as possible to the magnetic sensor 11 in the closed state.

According to the above configuration, both the unlocked state and the open / closed state can be detected. In addition, since the unlocked state and the open / closed state are determined using magnetic fluxes in different directions, when two magnetic sensors such as the reed switches 161 and 162 whose outputs do not depend on the direction of the magnetic flux as in the conventional example are used. The size can be reduced compared to
(Embodiment 2)
Since the basic configuration of the present embodiment is the same as that of the first embodiment, description of the common parts is omitted.

  In the present embodiment, as shown in FIG. 3, the main body block 1 is fixed to a side different from the base 21 of the crescent lock 2 (for example, the glass portion 32 of the outdoor sliding door). Further, only one magnet 4 is used while being fixed on a rotation shaft of the operation lever 23 with respect to, for example, the base 21. The magnetic pole direction of the magnet 4 is directed in a direction perpendicular to the rotation axis, and in the example shown in FIG. 3, the direction is the vertical direction in the locked state.

  As the magnetic sensor 11, for example, a well-known biaxial magnetic sensor can be used. As such a magnetic sensor 11, a combination of two Hall elements, magnetoresistive elements, and magnetoimpedance elements in a direction orthogonal to each other is known.

  The determination unit 12 determines the unlocked / unlocked state based on the direction of the magnetic flux detected by the magnetic sensor 11. Specifically, for example, a deviation between the direction of the magnetic flux detected by the magnetic sensor 11 and the direction of the magnetic flux generated by the magnet 4 when the operation handle 23 is in the locked position is calculated. Then, the determination unit 12 determines the locked state if the deviation is smaller than a predetermined threshold, and determines the unlocked state if the deviation is larger than the predetermined threshold.

  Furthermore, in the present embodiment, the determination unit 12 unlocks the uncertain state in which it is uncertain whether or not the operation lever 23 is caught by the hook 22, and the operation lever 23 is not unlocked by the hook 22. It is also possible to make a distinction between the state and the locked state in which the operation lever 23 is reliably caught by the hook 22. Specifically, for example, the determination unit 12 uses the first threshold value and the second threshold value that is larger than the first threshold value, and if the deviation is smaller than the first threshold value (that is, the lower limit value of the predetermined range). It is determined as a locked state, and if the above deviation is larger than the second threshold value (that is, the upper limit value of the predetermined range), it is determined as an unlocked state. If it is within (), it is determined as an indeterminate state. In this case, when the operation lever 23 is gradually rotated from the unlocked state to the locked state, the unlocked state determined by the determination unit 12 changes from the unlocked state to the indeterminate state according to the rotation of the operation lever 23. The locked state changes in three stages.

  The determination unit 12 determines the open / close state based on the magnetic flux density detected by the magnetic sensor 11. Specifically, the magnetic flux density is compared with a predetermined threshold value (hereinafter referred to as “open / close determination threshold value”), and if the magnetic flux density is equal to or higher than the open / close determination threshold value, the closed state where the window is closed If the density of the magnetic flux is less than the open / close determination threshold, it is determined that the window is open.

  In order to increase the accuracy of the determination as described above, it is desirable that the distance between the magnetic sensor 11 and the magnet 4 in the closed state be as small as possible.

  According to the above configuration, both the unlocked state and the open / closed state can be detected. In addition, since the locking / unlocking state is determined based on the direction of the magnetic flux and the open / closed state is determined based on the density of the magnetic flux, the magnetic sensors such as the reed switches 161, 162, etc. whose output does not depend on the direction of the magnetic flux as in the conventional example. The size can be reduced as compared with the case where two are used. Furthermore, since only one magnet 4 is required, the workability is improved as compared with the case of using two magnets 41 and 42 as in the first embodiment.

  In each of the above embodiments, as shown in FIG. 4, a setting input unit 15 for inputting an instruction to change the determination criterion in the determination unit 12 is provided, and the determination unit 12 inputs to the setting input unit 15. It is good also as what changes a judgment standard according to. Specifically, for example, a push button switch is provided as the setting input unit 15, and the determination unit 12 determines that the output of the magnetic sensor 11 when the push button switch is pressed is determined to be locked and closed. Change the criteria. When the above-described configuration is adopted in the second embodiment, the magnetic pole direction of the magnet 4 may be directed in any direction as long as it intersects the rotation axis of the operation handle 23, so that the workability is further improved. Alternatively, a variable resistor or a changeover switch may be provided in the setting input unit 15 so that various threshold values can be changed by operating the variable resistor or the changeover switch.

  Moreover, in each said embodiment, you may attach | subject the display which shows a magnetic pole direction to magnet 4,41,42. For example, as shown in FIGS. 5 and 6A and 6B, both ends of the boundary line of the magnetic pole (that is, both end parts in the direction orthogonal to the magnetic pole direction) are marked 40 respectively. The mark 40 may be printed or uneven, and may be a line as shown in FIGS. 5 and 6A, or may be a point as shown in FIG. 6B. Good. Furthermore, you may attach | subject the display explaining the correct position and direction of the magnet 4,41,42 to the outer surface of the main body block 1. FIG. 5 and 6 (a) and 6 (b) show application examples of the magnet 4 of the second embodiment, but the present invention can also be applied to the magnets 41 and 42 of the first embodiment. In the second embodiment, when the direction of the magnetic flux that is determined to be in the locked state can be changed by the setting input unit 15, the mark 40 as described above is not necessary, so a magnet is used from the outside. In order to prevent a mischief that intentionally causes a malfunction, it is desirable to make the magnetic pole direction of the magnet 4 unknown without providing the mark 40 as described above.

DESCRIPTION OF SYMBOLS 1 Main body block 2 Crescent lock 4 Magnet 11 Magnetic sensor 12 Judgment part 15 Setting input part 21 Base 23 Operation lever 40 Mark (display)
41 1st magnet 42 2nd magnet

Claims (6)

A base fixed to one side of the part to be locked, and an operating lever rotatably connected to the base, and the part to be locked was rotated to a predetermined locking position in a closed state A window locking / unlocking sensor for detecting a locking / unlocking state of a crescent lock that prohibits the opening of the portion to be locked by the operation lever;
A first magnet fixed to the operation lever;
A second magnet fixed on the other side of the portion to be locked in a direction that intersects the magnetic pole direction with the magnetic pole direction of the first magnet;
A main body block fixed to one side of the part to be locked;
The body block is
A magnetic sensor that outputs an electrical signal according to the direction and magnetic flux density of the magnetic flux;
Judgment for determining whether the operation lever is in the locked position or not and whether the locked part is closed or not based on the output of the magnetic sensor And
The determination unit determines the unlocked state based on the density of magnetic flux in the same direction as the magnetic flux generated by the first magnet when the operation lever is in the locked position, and generates the second magnet. A window locking / unlocking sensor characterized in that the open / close state is determined based on a magnetic flux density in the same direction as the magnetic flux. A base fixed to one side of the part to be locked, and an operating lever rotatably connected to the base, and the part to be locked was rotated to a predetermined locking position in a closed state A window locking / unlocking sensor for detecting a locking / unlocking state of a crescent lock that prohibits the opening of the portion to be locked by the operation lever;
A magnet fixed to the operation lever in a direction crossing a magnetic pole direction with a rotation axis of the operation lever with respect to the base;
A main body block fixed to the other side of the part to be locked;
The body block is
A magnetic sensor that outputs an electrical signal according to the direction and magnetic flux density of the magnetic flux;
Based on the direction of the magnetic flux detected by the magnetic sensor, and determining whether the operating lever is in the locked position or not, and based on the density of the magnetic flux detected by the magnetic sensor, A window locking / unlocking sensor comprising: a determination unit that determines an open / closed state of whether or not a part to be locked is closed.   If the deviation between the direction of the magnetic flux and the predetermined direction is within a predetermined range, the determination unit is uncertain whether or not the unlocking state prohibits the operation lever from opening the part to be locked. It is determined that the state is indeterminate, and if the deviation is larger than the upper limit value of the predetermined range, the unlocking state is sure that the operation lever does not prohibit the opening of the part to be locked. If the deviation is smaller than the lower limit value of the predetermined range, the locking / unlocking state is a locking state in which it is certain that the operation lever is prohibited from opening the part to be locked. The window locking / unlocking sensor according to claim 2, wherein A setting input unit for inputting an instruction to change the determination criterion in the determination unit;
The window locking / unlocking sensor according to claim 2, wherein the determination unit changes a determination criterion in accordance with an input to the setting input unit.   The window lock / unlock sensor according to any one of claims 1 to 3, wherein the magnet is provided with a display indicating a magnetic pole direction.   The said magnetic sensor has at least 1 among a Hall element, a magnetoresistive element, and a magneto-impedance element, The window locking / unlocking sensor of any one of Claims 1-5 characterized by the above-mentioned.

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