JPS62257596A - Locking detector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention provides a door, 'f! This invention relates to a lock detection device for detecting the locked state of doors such as , etc., and has a particularly simple configuration that can detect the locked state of a key that is mechanically inserted between sliding doors or double doors. This invention relates to a lock detection device.

(Prior Art) In recent years, various security systems have become popular for the purpose of crime prevention and disaster prevention in buildings. This security system generally collects various information in a building in one place, such as the open/close status of doors, lighting status of lights, and gas cock open/close status, and displays this on a display or issues necessary alarms. It is. Therefore, in configuring such a security system, a detection device that detects various states is required. A lock detection device that detects the locked state of doors and windows is also an important element in the configuration of a security system.

By the way, in the conventional lock detection device, a detection device is provided at a locked portion of a door or window to detect a locked state. However, with this type of system, if the locking part is placed on the movable side, such as a sliding door or a double door, the detection device must also be placed on the movable side. Therefore, there was a problem in that wiring from the detection device was difficult. For this reason, for the above-mentioned 1 m long door, only the open/closed state of the door is detected, which is not necessarily sufficient from the perspective of crime prevention.

(Problems to be Solved by the Invention) As described above, in the conventional lock detection device, if the door structure is such that the locking part is arranged on the movable side, it is difficult to wire the detection device, so lock detection is difficult. The problem was that I couldn't do it.

Therefore, an object of the present invention is to provide a lock detection device that can perform lock detection without causing difficulty in wiring even when the lock portion is disposed on the movable side.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a door that is provided with an engaging pawl among a pair of doors that are movable elements that are locked by engaging a locking lever and an engaging pawl. The following displacement member is provided on the door on the side where the door is being held, and a detection means is provided on the support frame. That is, one end of the displacement member extends to a position near the support frame, and the one end is displaced in conjunction with the locking operation of the engaging claw and the locking lever. The detection means detects the displacement of one end of the displacement member on the support frame side.

(Function) When the locking lever is engaged with the engagement pawl with the door closed, one end of the displacement member is displaced relative to the support frame in conjunction with the engagement pawl. Since the detection means attached to the support frame detects this displacement, it can detect that the door is locked.

(Example) Hereinafter, the present invention will be described in detail based on the drawings.

FIG. 1 is a diagram showing an example in which the present invention is applied to a sliding glass door. 1 in the figure is a window frame as a support frame.

This window frame 1 has two upper rails 2a along its inner surface.
, 2b and a lower rail (not shown) are formed, and these upper rails 2a.

2b and two glass doors 3a along the lower rail.

3b is movably attached. Glass door 3a.

3b+, t, door frames 4a, 4b, glass plates 5a, 5b fitted into these door frames 4a, 4b, and door frames 4a, 4
The upper rails 2a, 2b are attached to the upper and lower ends of b, respectively.
and guide bodies 6a and 6b that fit into the lower rails, respectively. Further, vertical frames 7a and 7b of the door frames 4a and 4b, which overlap when the glass doors 3a and 3b are closed, are provided with rotary lock keys. This key β−
is composed of an engagement claw 9 provided on the vertical frame 7a side and an engagement lever 10 provided on the vertical frame 7b side. A lock detection unit Vi, which will be described below, is attached so as to be interlocked with the engagement claw 9.

That is, as shown in FIG. 2, the engaging pawl 9 is rotatably supported by the vertical frame 7a about the rotation lJJ axis. The lower end of a rod 16, which is a displacement member, is engaged with the end of the engagement claw 9 opposite to the engagement end. The lower end of this rod 16 is constantly urged downward by a coil spring 17. The rod 16 extends upward inside the vertical frame 7a, and its upper end protrudes from the upper end of the vertical frame 7a. A magnet 18 is attached to the upper end of this rod 16.

This magnet 18 is arranged at a position where it does not interfere with the opening and closing of the glass doors 3a, 3b. On the other hand, a reed switch 19 is attached inside the door frame 1 at a position where the upper ends of the rods 16 face each other when the glass doors 3a, 3b are closed. This reed switch 19 is attached at a position where it can be turned on when the magnet 18 moves upward and turned off when it moves downward. In addition,
The connecting portion between the engaging claw 9, the rod 16 and the coil spring 17 is
As shown in FIG. 3, a frontage 20 formed in the vertical frame 7a
It is covered with a lid body 21 that closes off.

In the above configuration, when the glass doors 3a and 3b are closed and the locks are unlocked, the rod 16 is pulled downward by the coil spring 17, so the magnet 18 attached to the upper end of the rod 16 is also positioned downward. are doing. Therefore, as shown in FIG. 4(a), the reed switch 19 and the magnet 18 are separated from each other to the extent that the reed switch 19 is stably maintained in the OFF state. When the key β- is locked, the locking lever 10 engages with the engaging claw 9, and the engaging end of the engaging claw 9 is pushed down. Therefore, the other end of the engaging claw 9 pushes the rod 16 upward against the spring force of the coil spring 17. As a result, as shown in 41fl(b), the magnet 18 approaches the reed switch 29, turning the reed switch 19 on. Therefore, by detecting the open/closed state of the reed switch 19 on the window frame 1 side, the locked state can be detected.

Note that the present invention is not limited to the embodiments described above. For example, in each of the above embodiments, a proximity sensor consisting of a magnet and a reed switch was used as the detection means for detecting the displacement of the displacement member, but a contact sensor such as a microswitch or a non-contact sensor such as an optical switch may be used instead. Also good. Furthermore, the displacement member is not limited to one that protrudes from the top of the glass door as in the example described above, but may also be one that protrudes downward, one that protrudes laterally, or the like. Furthermore, it goes without saying that the present invention is also applicable to double doors.

[Effects of the Invention] As described above, according to the present invention, even if the locking part is provided on the movable side, the detection means is provided on the support frame side.
There is no difficulty in wiring.

Therefore, it is possible to provide a locking detection device that can detect locking in any type of door construction.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a sliding door equipped with a lock detection device according to an embodiment of the present invention, Fig. 2 is a perspective view showing the configuration of a displacement member of the lock detection device, and Fig. 3 is a partially cutaway perspective view showing how the displacement member is housed in the vertical frame;
FIG. 4 is a diagram showing the positional relationship between the magnet and the reed switch in the unlocked state and the locked state of the same lock detection device. 1...Window frame, 2a, 2b-...Top rail, 3a, 3b
...Glass door, 4a, 4b...Door frame, 5a, 5b...
...Glass, 6a, 6b...Guide body, 7a, 7b.
...Vertical frame, β-...Key, 9...Engagement claw, 10...
Lock lever, work 5 - Lock detection device, 16... Rod, 17... Coil spring, 18... Magnet, 19...
- Reed switch, 20...opening, 21...lid, L...rotation shaft. Applicant's agent Patent attorney Takehiko Suzue 1st 1 Figure 2 One (a) 4 Figure 3 (b) Figure

Claims (1)

[Claims] In a locking detection device that detects the locked state of a pair of doors that are supported by a support frame so as to be openable and closable and are locked by engaging a locking lever provided on one side with an engaging claw provided on the other side. a displacement member provided on the door on the engaging claw side, one end of which extends to a position near the support frame, and whose one end is displaced in conjunction with the locking operation of the engaging claw and the locking lever; 1. A lock detection device comprising: detection means for detecting displacement of one end of a member on a support frame side.