JP2004204467A - Crime preventive lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crime preventive lock preventing the loss of a locking member in unlocking and preventing confinement in a room by mischief. <P>SOLUTION: In the crime preventive lock, a locking member holding piece 3 projected in the opening direction of a hinged door 1 is mounted on the door frame 2 side of the hinged door 1, and the locking member 5 is mounted to the locking member holding piece 3 and allowed to abut against the hinged door 1 to carry out locking. In this constitution, a mounting part 4 of the locking member holding piece 3 is provided with a locking member holder 6 projected to the indoor side and engagedly fitted with the locking member 5. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a security lock used as an auxiliary lock attached to a hinged door of an apartment or the like, and in particular, to prevent a locking member from being lost at the time of unlocking, and to prevent locking in a room due to mischief locking. It relates to a security lock that can be made.
[0002]
[Prior art]
In recent years, as a countermeasure against theft by picking, there is an increasing number of occasions in which a retrofit security lock is installed on a hinged door of an apartment or the like.
As this security lock, for example, as shown in Japanese Patent Application Laid-Open No. 9-100665, a locking member holding piece projecting in the opening direction of the hinged door is attached to the door frame side of the hinged door, and the locking member holding piece is attached to the locking member holding piece. There is known a security lock that locks by attaching the lock member and bringing the lock member into contact with an opening door from the outside.
[0003]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional security lock, since the locking member is detached from the locking member holding piece at the time of unlocking, there is a possibility that the locking member may be lost, and if a third party locks with mischief, the room There is a problem that the door cannot be opened from inside, and it is locked.
[0004]
The present invention has been made in view of the problems of the above-described conventional security lock, and has as its object to provide a security lock that can prevent a locking member from being lost at the time of unlocking and prevent trapping in a room due to mischief. I do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a security lock according to the present invention is characterized in that a locking member holding piece projecting in an opening direction of a hinged door is attached to a door frame side of a hinged door, a locking member is attached to the locking member holding piece, and the locking member is attached. In a security lock for locking by contacting a door with a hinged door, a locking member holder is provided at a mounting portion of the locking member holding piece, the locking member holder protruding toward the indoor side and being engaged with the locking member.
[0006]
In this security lock, the locking member holder is attached to the mounting portion of the locking member holding piece and is provided with a locking member holder to which the locking member is engaged so that the locking member can be held at the time of unlocking. Thus, it is possible to prevent the locking member from being lost at the time of unlocking, and to prevent the locking member from being locked in the room due to mischief locking.
[0007]
In this case, a locking portion for locking the locking member in a locked state can be formed in the locking member holder.
[0008]
Thus, the locking member can be held in the locking member holder in the locked state, and removal of the locking member due to mischief can be prevented.
[0009]
Further, it is possible to form a slit-shaped hole for inserting the locking member holding piece or the locking member holder in the locking member, and to provide a latch ball which can be protruded and retracted by the locking mechanism behind the slit-shaped hole.
[0010]
As a result, the latch ball is not exposed to the outside, and therefore, it is possible to obtain a security lock that is not easily unlocked.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the security lock of the present invention will be described with reference to the drawings.
[0012]
1 to 4 show one embodiment of the security lock of the present invention.
In this security lock, a locking member holding piece 3 protruding in the opening direction of the hinged door is attached to a part of the door frame 2 of the hinged door 1 by a clamp holder 4, and a locking member 5 is mounted on the locking member holding piece 3. Locking is performed by bringing the locking member 5 into contact with the opening door 1 from outside.
In the security lock, a locking member holder 6 is provided on a mounting portion of the locking member holding piece 3, that is, the clamp holder 4, to which the locking member 5 protrudes toward the indoor side and is engaged.
[0013]
The locking member holding piece 3 is formed with a through hole 31 as a locking portion, and the locking member holder 6 is also formed with a through hole 61 as a locking portion.
[0014]
In the clamp holder 4, the gripping piece 43 is screwed to a screw bolt 42 pivotally supported on the holder main body 41, whereby only the gripping piece 43 moves without causing the screw bolt 42 to protrude and retract in the axial direction. Then, the clamp holder 4 can be fixed to the door frame 2.
[0015]
On the other hand, as shown in FIG. 1, the locking member 5 is formed on a rectangular parallelepiped main body 50 as a locking mechanism on a cylinder lock 51 and on the opposite side of the cylinder lock 51, and the locking member holding piece 3 or the locking member holder 6 is provided. And a key 52 is inserted into the cylinder lock 51 and turned to fix the latch ball 54 provided protruding and retractable in the depth of the slit-shaped hole 53 in a protruding state. It is configured as follows.
The locking member holding piece 3 and the locking member holder 6 are inserted into the slit-shaped holes 53 and the through holes of the locking member holder 6 are locked by the latch balls 54 to lock the locking member holding piece 3 and the locking member holder 6. It is configured to be able to.
[0016]
The locking member holder 6 provided on the clamp holder 4 can be formed integrally with the clamp holder 4, but can be easily removed by the user when the user does not need the locking member holder 6. Thus, as shown in the present embodiment, it is desirable that the clamp holder 4 be detachably attached to the clamp holder 4 with screws 7 or the like.
In this case, a screw hole 44 into which the screw 7 is screwed is formed in the clamp holder 4, and a through hole 62 through which the screw 7 is inserted is formed in the locking member holder 6.
[0017]
In this way, the locking member 5 is formed with the slit-shaped hole 53 into which the locking member holding piece 3 or the locking member holder 6 is inserted, and the latch ball 54 provided so as to be able to protrude and retract into the depth of the slit-shaped hole 53 is projected. Since the latch ball 54 is fixed in the state, the latch ball 54 is not exposed to the outside, and therefore, there is an advantage that unauthorized unlocking is difficult to be performed.
[0018]
Thus, the security lock according to the present embodiment is provided with the locking member holder 6 which projects to the indoor side and is engaged with the locking member 5 at the mounting portion of the locking member holding piece 3, as shown in FIGS. In addition, the locking member 5 can be held by the locking member holder 6 at the time of unlocking, thereby preventing the locking member 5 from being lost at the time of unlocking and preventing the lock from being locked in the room due to mischief locking. Can be.
Further, in this embodiment, the locked locking member 5 can be held in the locked state by using the through hole 61 of the locking member holder 6, thereby preventing the locking member 5 from being removed due to tampering. Can be.
[0019]
As described above, the security lock of the present invention has been described based on the embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and a locking mechanism of the locking member 5 other than the cylinder lock 51 is used. A range that does not deviate from the gist of using a locking mechanism of another type or fixing the locking member holding piece 3 to the door frame 2 side by fixing means other than the clamp holder 4, for example, a screw, a nail, or the like. The configuration can be changed as appropriate.
[0020]
【The invention's effect】
According to the security lock of the present invention, since the locking member holder is attached to the mounting portion of the locking member holding piece and is provided with the locking member holder that protrudes toward the indoor side and is engaged with the locking member, the locking member is held by the locking member holder during unlocking. Accordingly, it is possible to prevent the lock member from being lost at the time of unlocking, and to prevent the lock member from being locked in a room due to mischief locking.
[0021]
Further, a locking member for locking the locking member in the locked state is formed in the locking member holder, so that the locking member is held in the locking member holder in the locked state, and the removal of the locking member due to tampering is prevented. Can be.
[0022]
Further, by forming a slit-shaped hole for inserting a locking member holding piece or a locking member holder in the locking member, and providing a latch ball that can be protruded and retracted by a locking mechanism behind the slit-shaped hole, the latch ball is provided. A security lock that is not exposed to the outside and is therefore difficult to be unlocked illegally can be obtained.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing one embodiment of a security lock of the present invention.
FIG. 2 is a plan view showing an attached state of the security lock.
3A and 3B show the security lock, wherein FIG. 3A is a front view in which a locking member is omitted, FIG. 3B is a plan view thereof, and FIG. 3C is a plan view showing a state in which the locking member is engaged with a locking member holder. is there.
4A and 4B show the security lock, wherein FIG. 4A is a front view of a clamp holder, and FIGS. 4B to 4C are three views of a lock member holder.
[Explanation of symbols]
Reference Signs List 1 swing door 2 door frame 3 locking member holding piece 31 through hole 4 clamp holder (mounting part)
41 Holder body 42 Screw bolt 43 Gripping piece 5 Locking member 50 Body 51 Cylinder lock (lock mechanism)
52 key 53 slit-shaped hole 54 latch ball 6 locking member holder 61 through hole 7 screw

Claims (3)

In a security lock in which a locking member holding piece protruding in the opening direction of the hinged door is attached to the door frame side of the hinged door, a locking member is attached to the locking member holding piece, and the locking member is brought into contact with the hinged door to perform locking. A security lock, wherein a locking member holder is provided at a mounting portion of the locking member holding piece, the locking member protruding toward the interior of the room and being engaged with the locking member. 2. The security lock according to claim 1, wherein the locking member holder has a locking portion for locking the locking member in a locked state. The locking member is provided with a slit-shaped hole for inserting a locking member holding piece or a locking member holder, and a latch ball which can be protruded and retracted by a locking mechanism is provided behind the slit-shaped hole. The security tablet according to 1 or 2.

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