JP2521751Y2 - Crescent lock with lock confirmation function - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention relates to a crescent lock with a lock confirmation function that can be electrically locked by locking an internal switch.

[Prior Art] Conventionally, a crescent lock is known as a locking device attached to a side surface of a window frame such as a sliding door such as a sash, and a proximity switch is provided on the window and the window frame, so that there is an illegal intrusion. In some cases, this is monitored at a remote monitoring center by operating a proximity switch.

[Problem to be Solved by the Invention] By the way, when a proximity switch is provided on the window and the window frame, and when there is an illegal intrusion, the proximity switch is operated to monitor this at a distant monitoring center. The proximity switch is normal when the window is closed, cannot detect the locked state of the window, and may be in the unlocked state due to forgetting to lock the window closed.

In particular, in the case of Crescent tablets, there are the following problems. That is, as shown in FIG. 1 and FIG. 2, the crescent lock has a seat 6 installed on the side of one outer frame of the window.
Then, the window is locked by rotating and engaging the spiral portion 5a provided on the outer frame of the other window.

However, when the window is in a semi-closed state, the spiral portion 5a
However, there is a problem that the lock is rotated without engaging with the receiving seat 6, and is actually unlocked even if the spiral operation is performed.

The present invention has been made to solve the above-described problem, and has an object to obtain a crescent lock with a lock confirmation function that can detect a locked state of a window and prevent forgetting to lock.

[Means for Solving the Problems] The present invention has been made to solve the above problems, and employs the following means.

A cylindrical bearing 3 is formed integrally with a support portion 1 attached to a side surface 2 of one of the outer frames of a set of windows, and the rotary shaft is supported by the bearing 3 so as to be rotatable and movable in the axial direction. 4 is provided with a spiral portion 5a, the spiral portion 5a is rotated to engage with a receiving seat 6 attached to the other outer frame of the window, and the spiral portion 5a is provided with a predetermined pitch. When the spiral portion 5a and the receiving seat 6 are engaged with each other, the rotary shaft 4 is movably supported in the axial direction by a pitch length L corresponding to the ratio of the rotation angle of the spiral portion 5a. In addition, the operating plate 7 having a protruding portion 7a movably engaged with a cutout portion 3a formed in the bearing 3 in the axial direction so as to move in the axial direction in conjunction with the rotating shaft 4 And a micro switch 10 that is activated when the protruding portion 7a of the operation plate 7 urged toward the rotation shaft 4 by the coil spring 9 comes into contact with the micro switch. Characterized in that provided in the support portion 1.

[Operation] In the present invention, when locking, that is, when the helical portion engages with the seat due to the rotation of the rotary portion, the operating plate is connected to the helical portion via the helical portion and the rotating shaft. It moves in the axial direction by a distance L for a predetermined pitch length, and its protrusion can actuate the microswitch, and as a result, a signal can be taken out in accordance with the unlocking and unlocking of the crescent lock,
By using a known alarm device (not shown), locking and unlocking of doors and windows can be performed automatically and easily in a concentrated manner, which can be used to prevent forgetting to lock. Even if the operation is performed, it is possible to early find out that the lock is actually unlocked.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing an unlocked state of a crescent lock with a lock confirmation function according to this embodiment. FIGS. 2A and 2B are operation explanatory diagrams showing the operation when the crescent lock is locked.
FIG. 3 is a diagram showing the contact structure of the microswitch.

In the drawing, reference numeral 1 denotes a supporting portion attached to the side surface 2 of one outer frame of the window, and 3 denotes a cylindrical bearing formed integrally with the supporting portion 1 and has an axial cutout 3a.

Reference numeral 4 denotes a rotating shaft, which is inserted through an insertion hole 1a provided in the support portion 1 and is supported by the bearing 3 so as to be rotatable and movable in the axial direction.

Reference numeral 5 denotes a rotating portion integrally attached to the end of the rotating shaft 4 opposite to the side surface 2 side, and has a helical shape which removably engages with a receiving seat 6 attached to the other outer frame of the window. It has a portion 5a.

As shown in FIGS. 1 and 2, the spiral portion 5a
It has a known predetermined pitch and is formed in a helical shape, and when engaging with the receiving seat 6, FIGS.
As shown in (1), the rotary shaft 4 is moved in the axial direction by the distance L corresponding to the length of the pitch, and the protrusion 9a of the operation plate 7 is brought into contact with the microswitch 10.

Reference numeral 7 denotes an operating plate movably supported at the end of the side surface 2 of the rotating shaft 4 via a pin 8 and has a protruding portion 7a movably engaged with the notch 3a.

Reference numeral 9 denotes a coil spring provided between the operation plate 7 and the side surface 2, and reference numeral 10 denotes a microswitch mounted on the support 1.

Next, the operation will be described. At the time of unlocking shown in FIG.
The notch 3a is pushed by the terminal end, and the rotating shaft 4 also projects to the opposite side together with the operating plate 7. Therefore, the microswitch
10 is not actuated by the projection 7a of the actuation plate 7.

Here, as shown in FIG. 2, when the rotating part 5 is rotated to engage the spiral part 5a with the receiving seat 6, the pitch length corresponding to the ratio of the rotation angle of the spiral part 5a is increased. The rotating shaft 4 is inserted into the bearing 3 by the distance L of the minute. In response to this, the operating plate 7 moves by the distance L in the direction of the side surface 2 without rotating since the protruding portion 7a is engaged with the notch portion 3a.
The protrusion 7a of the operation plate 7 activates the micro switch 10.

For example, as shown in FIG. 3, the microswitch 10 has terminals A to C, and the terminals A to C are electrically connected to an alarm device (not shown). A and B are connected via contacts, and in the locked state, terminals A and B are connected via contacts, so that unlocking and unlocking can be taken out as a signal.

When the rotating part 5 is rotated to remove the spiral part 5a from the receiving seat 6 and the locked state is changed to the unlocked state, the rotating shaft 4 and the operating plate 7 are coiled with the rotation of the rotating part 5. By the repulsion force of No. 9, it is pushed out in the axial direction, and the unlocked state shown in FIG. 1 is obtained.

Note that a plurality of notches 3a and protrusions 7a may be provided. Further, although the support portion 1 is directly attached to the side surface 2 of one outer frame of the window, a mounting plate may be attached to the side surface 2 and the support portion 1 may be attached to this mounting plate. In this case, the coil spring 9 is supported by the operation plate 7 and the mounting plate.

[Effects of the Invention] As described above, according to the invention, a signal can be taken out in accordance with the locking and unlocking of the crescent lock. Can be performed automatically and easily, helping to prevent forgetting to lock, and even if the locking operation is performed by the semi-closed state of the window, etc., it is possible to quickly detect the fact that the lock is in fact unlocked. it can.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the crescent lock according to the present invention in an unlocked state, FIGS. 2A and 2B are explanatory diagrams of the operation when the crescent lock is locked according to the present invention, and FIG. It is a contact block diagram of a switch. DESCRIPTION OF SYMBOLS 1 ... Support part 2 ... Side surface 3 ... Bearing 3a ... Notch part 4 ... Rotating shaft 5 ... Rotating part 5a ... Helical part 6 ... Receiving seat 7 ... Operating plate 7a ... Projection Part 9: Coil spring 10: Micro switch

Claims (1)

(57) [Scope of request for utility model registration] 1. A cylindrical bearing (3) is formed integrally with a support (1) attached to a side surface (2) of one outer frame of a set of windows, and the bearing (3) is rotatable. A spiral part (5a) is provided on a rotating shaft (4) supported movably in the axial direction, and the spiral part (5a) is provided on a seat (6) attached to the other outer frame of the window. Is rotated to be freely engageable, the helical portion (5a) is given a predetermined pitch, and when the helical portion (5a) and the seat (6) are engaged, the helical portion (5 The rotary shaft (4) is supported movably in the axial direction by a length (L) of the pitch corresponding to the ratio of the rotation angle of 5a), and the notch (3) formed in the bearing (3) in the axial direction. An operating plate (7) having a protruding portion (7a) movably engaged with the rotating shaft (4a) and moving in the axial direction in conjunction with the rotating shaft (4) is provided on the rotating shaft (4); (9 A micro switch (10) that operates when the projection (7a) of the operation plate (7) urged toward the rotating shaft (4) comes into contact with the support (1) is provided on the support (1). A crescent tablet with a lock confirmation function.