JP4441922B2 - Security cover for Crescent lock - Google Patents

Description

  The present invention relates to a security cover for a crescent lock that can improve the security function by being attached to a vertical frame of an indoor sliding door.

For example, a sliding door device made of an aluminum sash in a window portion of a house, a balcony or the like widely uses a crescent lock as a final lock for preventing outsiders from entering the room. However, it is known that an outsider can invade relatively easily only by locking the crescent lock only by breaking only the glass-corresponding portion of the outdoor sliding door and unlocking the crescent lock.
Therefore, the applicant of the present application provides a plate body that can be hidden so that it cannot be seen from the outdoor side and can be attached to the glass of the outdoor sliding door, and a back surface of the plate body. There has already been proposed a security plate provided with an adhesive layer (see Patent Document 1).

According to this security plate, by attaching the plate main body to the corresponding portion of the final lock in the glass of the outdoor sliding door, the range of breaking the glass necessary for unlocking the final lock is expanded. For this reason, there is a high probability that an outsider such as a thief will give up breaking the glass lock part of the outdoor sliding door, and the outside person will be able to break the glass lock part of the outdoor sliding door itself. Therefore, the security function of the sliding door can be greatly improved.
JP 2000-306173 A (Claim 1)

  However, the conventional security plate has only a function of hiding the crescent lock so that it cannot be seen from the outdoor side by the plate body attached to the glass of the outdoor sliding door. For this reason, if an outsider breaks the glass of the outdoor sliding door without being aware of the presence of the security plate, the outsider can easily unlock the crescent lock. There is a disadvantage that it almost fulfills the security function after breaking the glass.

  Accordingly, an object of the present invention is to prevent an outsider from breaking the glass-corresponding portion of the outdoor sliding door as much as possible, and even if the glass of the outdoor sliding door is broken, The object is to provide a security cover for the crescent lock, which can greatly improve the security function of the sliding door by disabling the unlocking operation.

In order to achieve the above object, the present invention has taken the following solutions.
That is, the crime prevention cover of the crescent lock according to the present invention includes a mounting plate that can be attached to the vertical frame of the indoor sliding door, and the crescent lock that is attached to the outer surface of the vertical frame so as not to be visible from the outdoor side. A cover plate provided on one end side in the width direction of the mounting plate, and an opposing piece extending along the traveling direction of the sliding door from the outdoor side end of the mounting plate so as to face the glass of the outdoor sliding door, A cover plate comprising a rising piece extending from the front end of the facing piece to the indoor side, a guard position for preventing the crescent lock from rotating downward, and an upper side of the operation lever are opened. while so as to be freely switched to either Angado position for allowing the downward rotation of the said operating lever, lock plate said pivotally mounted to the rising piece , Characterized in that it and a locking mechanism for locking the lock plate into the guard position.

  According to the crime prevention cover of the present invention, by attaching the mounting plate to the vertical frame of the outdoor sliding door, the crescent lock is hidden from being seen from the outdoor side by the cover plate provided on one end side in the width direction of the mounting plate. The crescent lock cannot be unlocked unless the glass of the outdoor sliding door is broken in a wider range than this cover plate. For this reason, compared to the case where the security cover is not attached, the range for breaking the glass necessary to unlock the crescent lock will be expanded, and outsiders such as thieves will be able to lock the glass of the outdoor sliding door. Probability of giving up and breaking out of the part increases.

Further, according to the security cover of the present invention, the guard position that prevents the operation lever of the crescent lock from rotating downward, and the downward movement of the operation lever while allowing the upper side of the operation lever to open are allowed. A lock plate that can be switched to any of the unguard positions is pivotally attached to the rising piece , and a locking mechanism is provided to lock the lock plate to the guard position. If the lock mechanism is locked, the operation of unlocking the crescent lock by an outsider can be disabled even if the glass of the outdoor sliding door is broken.

In the present invention, the attachment means of the attachment plate to the vertical frame of the indoor sliding door can adopt a general method such as adhesive or screwing. However, when the attachment plate is attached by screwing, the attachment plate It is preferable to have a clearance groove portion having a width dimension through which a mounting screw for mounting the mounting base of the crescent lock to the vertical frame of the indoor sliding door can be inserted and opening at the edge of the mounting plate.
When such a relief groove is formed on the mounting plate, the mounting plate is mounted on the vertical frame of the indoor sliding door with the mounting plate being sandwiched between the vertical frame of the indoor sliding door and the crescent lock mounting base. Can do. For this reason, the mounting plate can be screwed without forming a new screw hole in the vertical frame of the indoor sliding door, so that the mounting plate can be firmly fixed without damaging the vertical frame of the indoor sliding door. .

  In the present invention, it is preferable to employ a locking mechanism that includes a key insertion portion that opens indoors and an operation key that can be detachably attached to the key insertion portion. In this case, since the key insertion portion of the operation key is open to the indoor side, compared to the case where the key insertion portion is open in another direction (for example, the upper side or the outside of the indoor sliding door frame), There is an advantage that the lock plate can be easily locked and unlocked by the operation keys.

  As described above, according to the present invention, it is possible to prevent an outsider from cracking the lock-corresponding portion of the glass of the outdoor sliding door as much as possible, and even if the glass of the outdoor sliding door is broken, Since the unlocking operation of the lock can be disabled, the security function of the sliding door can be greatly improved.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 3 show a security cover 1 according to an embodiment of the present invention. In this embodiment, the security cover 1 is attached to a sliding door device made of an aluminum sash installed on a window or a balcony of a house. The case of using is illustrated.
In this case, the sliding door device includes an outdoor sliding door 2 and an indoor sliding door 3 that are movably fitted in a sash frame that is not illustrated, and a crescent for tightening the sliding doors 2 and 3. A rectangular plate-like transparent or translucent glass 5 is fitted in the frame of the sliding doors 2 and 3. The crescent lock 4 includes a hook 8 fixed to the inner end surface of the vertical frame 6 of the outdoor sliding door 2 and a lock body 9 fixed to the outer surface of the vertical frame 7 of the indoor sliding door 3.

  Among these, the lock body 9 includes a substantially trapezoidal mounting base 10 fixed to the outer end surface of the vertical frame 7 and an arc-shaped locking claw 11 pivotally attached to the mounting base 10 so as to be rotatable about a horizontal axis. And an operation lever 12 fixed to the lock claw 11. The operation lever 12 is rotated upward so that the lock claw 11 is hooked on the hook hook 8, thereby overlapping vertically in the indoor and outdoor directions. The frames 6 and 7 are connected to each other, whereby the sliding doors 2 and 3 are locked.

As shown in FIGS. 1 and 2, the security cover 1 according to the present embodiment includes a cover body 14 formed by bending a stainless steel plate material into a substantially U-shaped cross section. 14 is a mounting plate 15 that can be attached to the vertical frame 7 of the indoor sliding door 3, and a cover plate 16 that is provided at one end in the width direction of the mounting plate 15 so as to hide the crescent lock 4 from the outside. Is integrated.
Of the plates 15 and 16 constituting the cover main holiday 14, the mounting plate 15 is a substantially rectangular plate having substantially the same width as the vertical frame 7 of the indoor sliding door 3 and a vertical dimension larger than that of the mounting base 10. The mounting plate 15 is formed with a clearance groove portion 17 that opens toward the lower edge of the mounting plate 15. The escape groove 17 has a width dimension through which a mounting screw 18 for mounting the mounting base 10 of the crescent lock 4 to the vertical frame 7 of the indoor sliding door 3 can be inserted. It is cut and formed in a state of extending straight toward.

  On the other hand, the cover plate 16 includes a facing piece 19 extending from the outdoor side end of the mounting plate 15 along the traveling direction of the sliding doors 2 and 3 so as to face the glass 5 of the outdoor sliding door 2, and the facing piece 19. And a rising piece 10 extending from the front end to the indoor side. Therefore, as shown in FIG. 2, when the crime prevention cover 1 is attached, the crescent lock 4 (except for the hooks 8) is hidden by the opposing piece 19 of the cover plate 16 so that it cannot be seen from the front side. In addition, the plate 16 is hidden by the rising piece 20 so that it cannot be seen from the side (direction slightly shifted from the front).

  An escape opening 21 for avoiding interference with the hooking hook 8 is formed at the substantially central portion in the vertical direction of the opposing piece 19 of the cover plate 16. In addition, relief corners 22 for avoiding interference with the vertical frame 6 of the outdoor sliding door 2 are formed at the corners of the mounting plate 15 and the cover plate 16 and the corners of the opposing piece 19 and the rising piece 20. ing. Further, the rising piece 20 of the cover plate 16 can be inserted with a rotating tool (not shown) such as a screwdriver for rotating the mounting screw 18 of the mounting base 10 and is an operation that is long in the vertical direction. A window 22A is formed.

The security cover 1 of the present embodiment further includes a guard position (state shown in FIG. 2) surrounding the crescent lock 4 in an inoperable state and an unguard position (state shown in FIG. 1) that releases the crescent lock 4 into an operable state. There are provided a lock plate 23 attached to the cover plate 16 so that it can be switched to any one of the above, and a locking mechanism 24 for locking the lock plate 23 at a guard position.
The lock plate 23 is made of a plate member having substantially the same size as the rising piece 20 of the cover plate 16, and is pivotally attached so that upper end portions thereof can swing up and down via mounting pins 25. . Therefore, when the lock plate 23 is in the guard position shown in FIG. 2, the lock plate 23 is superposed on the outer surface side of the rising piece 20, and when the lock plate 23 is swung upward from the guard position, as shown in FIG. It becomes an unguard position located above 20.

  As shown in FIG. 2, a lock piece 26 extending toward the indoor sliding door 3 side (right side in FIG. 2) is bent at the indoor side edge in the width direction of the lock plate 23 at the guard position. 26 protrudes to the indoor sliding door 3 side to the extent that it can interfere with the operation lever 12 of the crescent lock 4 and prevent its downward rotation. For this reason, when the lock plate 23 is locked at the guard position, the lock piece 26 of the lock plate 23 cannot operate the crescent lock 4.

  The locking mechanism 24 includes a key insertion portion 27 formed in the lock piece 26 so as to open to the indoor side, a rotation shaft 28 disposed in the key insertion portion 27, and rotation of the shaft 28. A locking member (not shown) for connecting the lock plate 23 to the rising piece 20 and an operation key 29 that can be detachably attached to the key insertion part 27 are provided. Therefore, when the operation key 29 is inserted into the key insertion portion 27 after the lock plate 23 is set to the guard position, and then the operation key 29 is rotated in the unlocking direction, the lock plate 23 rises via the latch member. Connected to the piece 20, the lock plate 23 is locked in the guard position.

Next, with reference to FIG.1 and FIG.2, the usage method and effect | action of the crime prevention cover 1 of this embodiment are demonstrated.
First, in order to install the security cover 1 on the sliding door device, the mounting screw 18 of the mounting base 10 is loosened by using a turning tool such as a screwdriver to provide a slight gap between the mounting base 10 and the vertical frame 7. . Next, as shown in FIG. 1, the mounting plate 15 of the security cover 1 is inserted into the gap from above, and the mounting screw 18 of the mounting base 10 is inserted into the escape groove 17 so that the mounting plate 15 is attached to the mounting base. Set on the back side of 10.

Then, since the entire crescent lock 4 is surrounded by the cover main body 14 of the security cover 1, the mounting screw 18 is retightened by the rotating tool inserted from the operation window 22 in this state, and the mounting plate 15 is attached to the mounting base 10. Is installed between the vertical frame 7 and the security cover 1 is completed.
FIG. 3 is a front view of the sliding door device after installing the security cover 1 as described above, as viewed from the outdoor side. As shown in FIG. It is hidden from view from the outside.

  Further, in order to prevent the crescent lock 4 from being unlocked by the crime prevention cover 1 of the present embodiment, the lock plate 23 is rotated downward to the guard position shown in FIG. The key 29 may be inserted into the key insertion part 27 and rotated in the unlocking direction. Then, the lock plate 23 is coupled to the rising piece 20 by the locking mechanism 24 and locked to the guard position, and the operation lever 12 of the crescent lock 4 cannot be rotated downward by the lock piece 26 of the lock plate 23, thereby the crescent. The unlocking operation on the lock 4 is prevented.

  As described above, according to the crime prevention cover 1 of the present embodiment, the crescent lock 4 is hidden by the facing piece 19 of the cover plate 16 so as not to be seen from the outdoor side, and the outdoor sliding door 2 has a wider range than the facing piece 19. The crescent lock 4 cannot be unlocked unless the glass 5 is broken. For this reason, compared with the case where the said crime prevention cover 1 is not attached, the range which breaks the glass 5 required in order to unlock the crescent lock 4 will be expanded, and outsiders, such as a thief, will be outside of the outdoor sliding door 2. The probability of giving up breaking the lock-corresponding portion of the glass 5 and dissipating increases.

  Moreover, according to the crime prevention cover 1 of this embodiment, the lock | rock which can be switched to either the guard position which surrounds the crescent lock 4 in an inoperable state, and the unguard position which releases the crescent lock 4 in an operable state. Since the plate 23 is attached to the cover plate 16 and a locking mechanism 24 for locking the lock plate 23 to the guard position is provided, the plate 23 is locked by the locking mechanism 24 after the lock plate 23 is set to the guard position. By doing so, even if the glass 5 of the outdoor sliding door 2 is broken, an unlocking operation on the crescent lock 4 by an outsider can be prevented.

Furthermore, in the crime prevention cover 1 of the present embodiment, the crescent lock 4 is not only from the front of the outdoor sliding door 2 but also from the direction slightly inclined from the front by the rising piece 20 formed at the tip of the cover plate 16. Since it is hidden so that it cannot be seen, the crime prevention function by the crime prevention cover 1 is further improved.
The present invention is not limited to the above embodiment.

  It is a perspective view at the time of attaching the crime prevention cover of this invention to a sliding door apparatus.   It is a perspective view which shows the state after attaching the crime prevention cover of this invention to the sliding door apparatus.   It is the front view which looked at the sliding door apparatus which attached the crime prevention cover of this invention from the outdoor side.

Explanation of symbols

1 Crime prevention cover 2 Outdoor sliding door 3 Indoor sliding door 4 Crescent lock 5 Glass 6 Vertical frame (outside)
7 Vertical frame (indoor side)
DESCRIPTION OF SYMBOLS 10 Mounting stand 15 Mounting plate 16 Cover plate 17 Escape groove part 18 Mounting screw 23 Lock plate 24 Locking mechanism 27 Key insertion part 28 Operation key

Claims (3)

A mounting plate (15) attachable to the vertical frame (7) of the indoor sliding door (3);
In the vertical frame (7) the outside-frame crescent lock attached to the side surface (4) to hide so as not to be visible from the weather side mounting plate (15) widthwise end provided on the side cover plate (16) And the opposing piece (19) extended along the traveling direction of the sliding door (2, 3) from the outdoor side end of the said mounting plate (15) so as to oppose the glass (5) of an outdoor sliding door (2). ) And a rising plate (20) extending from the tip of the opposing piece (19) to the indoor side, and a cover plate (16) ,
A guard position that prevents the crescent lock (4) from rotating downwardly, and a downward rotation of the operating lever (12) while opening the upper side of the operating lever (12). A lock plate (23) pivotally attached to the rising piece ( 20) so as to be switchable to any of the unguard positions that allow
A locking mechanism (24) for locking the lock plate (23) in the guard position;
A security cover for Crescent locks, characterized by comprising:   The mounting plate (15) has a width dimension in which a mounting screw (18) for mounting the mounting base (10) of the crescent lock (4) to the vertical frame (7) of the indoor sliding door (3) can be inserted, and The crescent lock crime prevention cover according to claim 1, further comprising a clearance groove (17) opening at an edge of the mounting plate (15).   The locking mechanism (24) comprises a key insertion part (27) that opens to the indoor side, and an operation key (29) that can be detachably attached to the key insertion part (27). Crispy lock security cover.

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