JPH084375A - Locking confirmation device - Google Patents

Abstract

PURPOSE:To confirm the locking of a door easily by detecting whether or not a locking pawl is projected by a lever mounted on a case and a switch interlocked with the lever. CONSTITUTION:When a knob 101 for locking is turned from a released state and a locking pawl 103 is projected from one end face 102a of a door 102, the peripheral section of the locking pawl 103 is abutted against a lever front-end section 6c to push the lever front-end section 6c, thus resulting in rocking centering around a support shaft 5, then releasing pushing to a switch 7. When the locking pawl 103 is further projected, a lever 6 is held at a place, where the switch 7 is not pushed as the lever 6 is left as it is brought to the state, in which the front end section 6c of the lever 6 is abutted against the side face of the locking pawl 103, thus preventing the pushing of the switch 7 by the lever 6 under the state, in which the locking pawl 103 is engaged with a recessed section 104 on the opening peripheral section side of the door and the door is locked, then maintaining the switch 7 under an off state. When the locking pawl 103 is pulled to the door 102 side from the state, the lever 6 is returned to a place at the time of release by a spring 8 and the switch 7 is also brought to an on state from the off state, thus confirming the locking and release of the door 102.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock confirmation device used in a security system or the like.

[0002]

2. Description of the Related Art In recent years, security systems for centrally managing the locked state of various doors and windows in buildings have become widespread from the viewpoint of crime prevention. This is, for example, whether the door is locked or not is detected by electrical or mechanical means, and the detection signal is transmitted to the controller in the central control room by radio waves (wireless type) or cable (wired type). By decoding and processing the signal, it is possible to display the locked state of each door on the display unit provided in the controller and issue a necessary alarm from the alarm unit.

By the way, in this type of security system, a means for detecting or confirming the locked state of a door knob or the like is required, and various types of lock confirmation devices have been proposed in the related art.

[0004]

However, in the conventional lock confirmation device, if this type of device is to be attached to an existing door or doorknob, large-scale construction is required for the doorknob and the door. There was a problem that could not be installed. Further, in the case of the conventional lock confirmation device, there is an inconvenience that when the lock confirmation device is attached to an existing door knob, it cannot be attached unless various modifications are made according to the shape and type of the door knob.

The present invention addresses such a problem, and does not require large-scale work on the door or doorknob, and can be easily attached regardless of the shape or type of the doorknob. The purpose is to provide a device.

[0006]

In order to achieve the above object, the present invention is an apparatus for confirming the locking of a door that is locked by projecting a locking claw from one end face, which is configured as follows. And

That is, a case mounted on the door surface near the locking claw is provided, and a base and a swingable mounting on the base via a support shaft are provided in the case so that one end side is located near the locking claw. So as to extend outside the case, and when the tip of the locking claw is pushed by the claw in the backward direction orthogonal to the projecting direction when the locking claw is projected, the lever swings around the support shaft, and a lever of this lever. A spring for urging the lever in a direction in which the tip portion can be brought into contact with the locking claw, and a switch for turning on and off in conjunction with the lever are provided.

Here, it is preferable that the lever has a tapered tip end portion that abuts on the locking claw, and is arranged so as to be positioned near the tip peripheral edge portion of the locking claw when the locking claw is not protruding. Good.

Further, it is desirable that the case is provided with a position adjusting mechanism for changing the position of the base so that the position of the lever tip portion with respect to the locking claw can be adjusted.

[0010]

In the lock confirmation device of the present invention, the lock confirmation of the door is performed as follows.

First, in order to lock the door, for example, when a locking knob provided on a door knob is turned to project the locking claw from one end surface of the door, the tip of the lever is orthogonal to the projecting direction of the claw by the locking claw. Is pushed in the backward direction. As a result, the entire lever swings about the support shaft by a predetermined amount, and in conjunction with this, the switch changes from the on state to the off state (or the off state to the on state). In addition, when the locking claw is projected in this way (locked state) and the locking knob is rotated in the opposite direction to the above to retract the locking claw toward the door, the lever that was pushed backward by the locking claw will The spring force causes the locking claw to oscillate in a direction opposite to that when the locking claw is projected to return to the initial position, and the switch also changes from the off state to the on state (or from the on state to the off state). In this way, whether or not the locking claw is in the protruding state is detected by the change in the lever position, and the switch is turned on / off in conjunction with the lever to confirm the locking of the door.

By the way, in the present invention, not only the base to which the above-mentioned lever is attached, but also the spring, the switch and the like are provided in the case. For this kind of case, for example, double-sided adhesive tape is used. By
It can be easily attached to the door surface near the locking claw.
Therefore, the door and the door knob can be attached without any large-scale work or work, and can be attached regardless of the shape or type of the door knob.

If the tip of the lever is formed in a tapered shape, the tapered portion is pushed by the peripheral edge of the tip of the locking claw when locking, so that the lever tip can be moved more reliably and smoothly. Can be retracted.

Further, when a position adjusting mechanism for changing the position of the base is provided, the lever tip is set to an optimum position with respect to the locking claw by appropriately changing the position of the base by the mechanism. It is convenient because it can be finely adjusted.

[0015]

Embodiments of the present invention will be described below. First, two representative examples of security systems to which the lock confirmation device of the present invention can be applied will be briefly described.

FIG. 1 shows, as an example, a wired type security system. In this system, a lock confirmation device A attached to a door knob (not shown) has two terminals, a lock side and an unlock side, and these terminals are connected, for example, via cables B ₁ and B ₂ for signal transmission. It is connected to the processing unit D on the controller C side. To the processing unit D, an operation unit E having two first and second switches, a display unit F, and an alarm unit G are connected.
Further, both the lock confirmation device A and the processing unit D are connected to a power source.

The system operates as follows. That is, when the lock confirmation device A is unlocked when the first switch of the operation unit E is pressed, the display unit F displays "Unlocking", and when the lock confirmation device A is locked, "Locking" is displayed. . Further, when the second switch of the operation unit E is pressed, when the lock confirmation device A changes from the locked state to the unlocked state, for example, “intrusion” is displayed on the display unit F and the alarm unit G displays A voice warning is issued. In this way, by confirming the locked state of the doorknob with the lock confirmation device A, it is possible to centrally manage the locking of the doorknob from a remote location.

FIGS. 2 and 3 show a wireless type as an example of another security system. FIG. 2 shows the configuration of the doorknob (or its vicinity) which is the transmitting side, and FIG. 3 is the receiving side. The configuration on the controller side is shown.

In this system, a door knob (not shown)
The lock confirmation device a attached to the terminal has two terminals on the lock side and the unlock side, and these terminals are signal lines b ₁ and b.
It is connected to the selector circuit c via ₂ respectively.
The selector circuit c is connected to, for example, a ROM (not shown) in which a predetermined unlock code and lock code are stored, and either the unlock code or the lock code is a signal from the lock confirmation device a. In response to the selection and reading by the selector circuit c, a signal indicating the read code is modulated by the encoder circuit d and sent to the transmitting unit e, and the controller f of FIG. It will be sent to.

On the other hand, the controller f of FIG. 3 has a receiving section g for receiving the transmitted signal, a decoding section h for demodulating the output signal from the receiving section g, and an output signal from the decoding section h. The code decoding unit i for decoding the code indicated by and the processing unit j for inputting the signal of the decoded code are provided. The operation unit k, the display unit 1 and the alarm unit m are connected to the processing unit j, as in the wired type system.

This system operates as follows. That is, when the lock confirmation device a indicates the locked state, the selector circuit c selects the preset lock code, and when the lock confirmation device indicates the unlocked state, the unlock code is selected. . The selected lock code or unlock code is transmitted from the transmitter e via the encoder circuit d.

The transmitted code is received by the receiving section g in the controller f, is sent to the code decoding section i via the decoding section h, and is also decoded / determined by the decoding section i as a lock code or an unlock code. The result is sent to the processing unit j. The processing unit j outputs the information indicated by the decoded / judged code to the display unit 1 and the alarm unit m according to the instruction content of the operation unit k. As described above, also in the wireless type security system shown in FIGS. 2 and 3, it is possible to remotely manage the locking of the door knob by confirming the locking state of the door knob with the locking confirmation device.

In the examples of FIGS. 1 and 2, the lock confirmation devices A and a have two terminals on the lock side and the unlock side, respectively. Since it can be distinguished whether it is locked or unlocked by opening and closing, it goes without saying that a locking confirmation device having only one terminal may be used.

Next, an embodiment of the present invention applicable to the above security system will be described in detail. The lock confirmation device according to the present embodiment can be applied to the wired or wireless security system as described above.
Shows the overall configuration of the device.

As shown in the figure, this lock confirmation device 1
The door is configured so that when the locking knob 101 of the door knob 100 is turned, the locking claw 103 projects from one end surface 102a of the door 102 and engages with the recess 104 on the peripheral edge of the door opening. For checking the locking of the lock 102, there is a case 2 attached to the door surface near the locking claw 103 by, for example, a double-sided adhesive tape (not shown).

As shown in an enlarged view in FIG. 5, a base 4 is attached to the case 2 so as to be swingable via a shaft 3, and is swingable via a support shaft 5 on the base 4. And a lever 6 mounted so as to be possible. Of these, the lever 6 has one end 6a outside the case 2 and the locking claw 103
And the other end side 6b is arranged at one end in the case 2. And the tip portion 6c of the one end side 6a
Is formed in a taper shape and is located in the vicinity of the tip peripheral edge portion 103a of the locking claw 103 in the illustrated non-projecting state.

Further, on the base 4, a switch 7 which is turned on and off by a lever 6, and a direction in which the lever 6 is centered around the support shaft 5 and which is opposite to the direction shown by an arrow α in the figure (the lever tip 6c is a locking claw). Spring 8 for urging in the direction toward 103)
And the lever tip portion 6c is the locking claw tip peripheral edge portion 103a.
There is provided a stopper 9 for restricting the swing position of the lever 6 so that the switch 7 is pushed by the lever 6 to be in the ON state when it is located in the vicinity of. When the locking claw 103 projects forward (to the left in the drawing) from the non-projecting position shown by the solid line in the figure, the tip peripheral edge portion 103a of the locking claw 103 is tapered as shown by the chain line in the figure. By abutting against the lever tip portion 6c and pushing it in the backward direction indicated by the arrow β in the figure, the lever 6 swings around the support shaft 5 in the direction of the arrow α, and accordingly the switch 7 by the lever 6 is moved. The pressure on is released.

Further, in the locking confirmation device 1 of this embodiment, as shown in FIGS. 5 to 6, the nut member 11 can be swung around the pin 10 on the lower surface side of the base 4 by the pin 10. The adjustment screw 12 is attached to the nut member 11 while being attached.
The head 12a of the adjusting screw 12 is attached to the case 2, and the tip 12b is in contact with the inner surface of the case so that the head 12a can rotate but does not move in the axial direction. Then, by turning the adjusting screw 12 and swinging the base 4 around the shaft 3 as shown by the arrow in FIG. 6, the distance from the lever tip 6c to the locking claw 103 can be adjusted. There is.

Next, the operation of this embodiment will be described. When the door 102 is unlocked, as shown in FIGS. 4 and 5, the locking claw 103 is retracted toward the door. At this time, in the locking confirmation device 1, the tip portion 6c of the lever 6 is located in the vicinity of the tip peripheral edge portion 103a of the locking claw 103, while the lever 6 pushes the switch 7 to turn it on.

From this state, when the locking knob 101 of the door knob 100 is turned to project the locking claw 103 from the one end surface 102a of the door 102, the locking claw tip peripheral edge portion 103a is shown at the beginning of the projection as shown by the chain line in FIG. The lever 6 is abutted against the tapered lever tip portion 6c to push the lever 6 in the direction of arrow β in the figure. As a result, the lever 6 resists the spring 8 and the tip portion 6c retreats in the same direction as the arrow β, and at the same time, swings around the support shaft 5 in the direction of the arrow α as a whole. Release the pressure.

When the locking claw 103 further protrudes from the chain line state in FIG. 5, the lever 6 swings as described above while the tip 6c is in contact with the side surface of the locking claw 103, as shown in FIG. It is held at the rear position, that is, the position where the switch 7 is not pressed. Therefore, in the state shown in FIG. 7 in which the locking claw 103 is engaged with the recess 104 on the peripheral edge side of the door opening and locked, the switch 7 is not pushed by the lever 7 and is maintained in the off state.

Further, when the locking knob 101 is turned in the opposite direction from the locked state of FIG. 7 to cause the locking claw 103 to retract toward the door 102, the lever pushed by the locking claw 103 in the backward direction. 6 is the force of the spring 8 in FIG.
Return to the unlocked position shown in, and switch 7 accordingly.
Also changes from the off state to the on state (or from the on state to the off state).

In this way, whether the locking claw 103 is in the projected state or not is confirmed by the switch 7 being turned on / off according to the position change of the lever 6. The on / off information of the switch 7, that is, the information indicating the locking / unlocking of the door 102 is externally transmitted by a cable (in the case of a wired system) or a transmitter (in the case of a wireless system) which is not shown in the figure and is connected to the switch 7. Sent. Therefore, by receiving this remotely, for example, by a controller (not shown) or the like, it is possible to easily confirm whether the door 102 is in the locked state or the unlocked state. As a result, the lock management of the door can be centralized in the wired or wireless security system.

According to the lock confirmation device 1 for confirming the lock state of the door as described above, for example, the case 2
The rear surface side can be easily attached by simply sticking it to a predetermined position on the door surface with a double-sided adhesive tape or the like. Therefore, a large-scale work for the door and the door knob is not necessary at the time of mounting. Further, since the door knob is not modified, the door knob can be attached regardless of its shape or type.

[0035]

As described above, according to the lock confirmation device of the present invention, whether or not the locking claw is projected is detected by turning on / off the lever provided on the case and the switch interlocking with the lever. For example, the locking of the door can be confirmed simply by attaching the case to the door surface near the locking claw using a double-sided adhesive tape or the like. Therefore, it is not necessary to carry out a large-scale installation work for the door knob and the door. Further, since no work is required for the doorknob, the doorknob can be attached regardless of the shape or type of the doorknob.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an example of a wired security system to which a lock confirmation device of the present invention can be applied.

FIG. 2 is a configuration diagram of a transmitting side showing an example of a wireless security system to which the lock confirmation device of the present invention can be applied.

FIG. 3 is a block diagram of a receiving side of the wireless security system.

FIG. 4 is a partial cross-sectional view showing an overall configuration of a lock confirmation device according to an embodiment of the present invention, showing a state in which the device is attached to a door surface near a lock claw.

5 is a partially enlarged view showing an enlarged part of FIG.

FIG. 6 is a perspective view showing a position adjusting mechanism provided in the lock confirmation device, in which a part of a peripheral portion of the base is omitted.

FIG. 7 is a partial cross-sectional view showing a state when the device is locked.

[Explanation of Codes] 1 ... Lock Confirmation Device 2 ... Case 3, 10, 11, 12 ... Position Adjustment Mechanism (3 ...
Shaft, 10 ... Pin, 11 ... Nut member, 12 ...
・ Adjusting screw) 4 ... Base 6 ... Lever 6c ... Lever tip 7 ... Switch 8 ... Spring 102 ... Door 102a ... Door one end surface 103 ... Locking claw 103a: peripheral edge of locking claw

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Naotaka Miyamoto 1-10-40 Mikuni Honcho, Yodogawa-ku, Osaka City, Osaka Prefecture Izumi Electric Co., Ltd.

Claims (3)

[Claims] 1. A device for confirming whether a door is locked by projecting a locking claw from one end surface, the device having a case attached to a door surface near the locking claw, and a base in the case. And is swingably mounted on this base via a support shaft and extends outside the case so that one end side is located in the vicinity of the locking pawl, and its tip is projected by the pawl when the locking pawl is projected. A lever that swings around the support shaft when pushed in the backward direction orthogonal to the direction, a spring that biases the lever in a direction that allows the tip of the lever to abut on the locking claw, and the lever. A lock confirmation device, which is provided with a switch that is turned on and off in conjunction with each other. 2. The tip of the lever is formed in a tapered shape,
The locking confirmation device according to claim 1, wherein the locking confirmation device is arranged so as to be positioned in the vicinity of the tip peripheral edge portion of the locking claw when the locking claw is not protruding. 3. The locking mechanism according to claim 1, wherein the case is provided with a position adjusting mechanism capable of adjusting the position of the lever tip portion with respect to the locking claw by changing the position of the base. Confirmation device.