JP4477342B2 - Door lock box - Google Patents

Description

  The present invention relates to a door lock box, and more particularly to a vertically long door lock box attached to a door of a building.

  The lock structure described in Patent Document 1 uses a pliers in which a thief has a pinch, and forcibly “breaks” the fixed cylinder and the cylinder lock together with the decorative ring.

  However, in recent years, the thief's technique has deteriorated, and cutting tools such as carbide drills and carbide hole saws are used to cover the peripheral part of the cylinder outer cylinder, the required part of the door, and the locking and unlocking mechanism of the lock box. There has been a “cam feed” incident in which appropriate attacks are made on the wide side walls, etc., and appropriate holes are opened, and seven tools are operated using the holes to rotate the dead cam drive arm in the unlocking direction. .

Therefore, in the case of such a “cam feed” case, it is not always perfect to take only measures for removing the cylinder, and it is necessary to take measures to protect the lock from another viewpoint.
JP 2003-120083 A

  A first object of the present invention is to provide a lock box that can protect even when a thief attacks a lock by making a hole in the outer wall surface of a door using a carbide drill or a carbide hole saw. Thereby, “cam feed” can be prevented as much as possible. The second object is to attach and fix the hard defense plate so as not to adversely affect members and parts constituting the lock mechanism in the vertically long lock box. The third purpose is to easily attach and fix the hard defense plate divided vertically on the wide side wall of the vertically long lock box through a plurality of defense plate fixing means and prevent cam feeding. It is to be able to surely defend the range that can be done. The fourth purpose is that the hard defense plate does not easily fall even if it tilts outward in the gap of the door. Others are incidental purposes.

Door for lock box of the present invention, the end surface L-shaped rigid lower with the second engaged portion 24 respectively in the vertical direction of the lock box X in the upper side in the longitudinal direction of the first engaged portion 23 and the lock box X A protective plate 21, and an upper end face L-shaped hard protective plate 22 having a first engaging portion 23A in the vertical direction of the lock box X and a second engaging portion 24A in the front-rear direction of the lock box X on the lower side, respectively. The lower end surface L-shaped hard defense plate 21 and the upper end surface L-shaped hard defense plate 22 include the first engaged portion 23, the first engaging portion 23A, and the second engaged portion. The portion 24 and the second engagement portion 24 </ b> A are engaged with each other, and are fixedly attached to the lock box X via a plurality of defense plate fixing means 27.

  In the above configuration, the lower hard defense plate 21 and the upper hard defense plate 22 are mounted on at least one wide side wall of the lock box X, and the engaged relationship between the engaged portion and the engaging portion is a puzzle type. It is characterized by being fitted to each other. The hard defense plate is connected to the wide side wall of the lock box X and the end of the wide side wall orthogonal to the wide side wall, and is attached to the rear wall 1a of the lock box X. And a vertically long side wall portion. The lower hard defense plate 21 and the upper hard defense plate 22 are provided on both the case body and the case lid of the lock box X, respectively. The plurality of female small holes 12 formed on the wide side wall of the lock box X correspond to the positions of the through small holes 26 for the fixing means 27 of the hard defense plate 21.22, but the case lid for the case body. It is characterized by being uniquely formed at a position different from the position of the fixing means 2 for 2. Furthermore, the height ratio of the male defense plate 22 and the female defense plate 21 divided into two parts in the vertical direction is approximately 1: 1 to approximately 1: 1.5.

  (1) With respect to the vertically long lock box, the hard defense plate is divided into upper and lower portions at an appropriate length ratio, so that the lower hard defense plate or the upper hard defense plate is within the gap of the door. Does not warp outward. Therefore, it does not adversely affect the members and parts constituting the lock mechanism in the lock box.

  (2) Since the upper and lower plates each have an engaged portion on one side and an engaging portion that engages with the engaged portion on the other side, positioning is easy. Therefore, it can be easily attached and fixed to the wide side wall of the vertically long lock box via the plurality of defense plate fixing means. Moreover, the range which can prevent cam feed can be reliably protected by combining upper and lower plates integrally.

(3) Further, the hard protective plate 21.22 above or below, since a plurality of sets of the engaging portion and the engaged portion are respectively engaged in the vertical direction and the longitudinal direction of the lock box, the gap of the door Even if it is tilted outward, it does not fall easily.

(4) Depending on the embodiment, the vertical side wall of the lock box can be fully protected. Moreover, a lock box can be used according to the usage mode (meaning that any of the inner and outer wall surfaces can be used as the outer wall surface).

(5) In some embodiments, there is no concern that split hard barrier plate and the case lid are removed together.

  In the following, the best mode for carrying out the present invention will be described with reference to FIGS.

(1) Lock box X
X is a vertically long lock box. The lock box X includes a case body 1 and a case lid 3 coupled to the case body 1 via a plurality of fixing means 2. The case body 1 has a vertically long mounting plate 4, an interposition plate 5 fixed to the inner wall surface of the mounting plate 4, and a front 6 fixed to the outer wall surface of the mounting plate 4. The fasteners for fixing the front 6, the intervening plate 5, and the mounting plate 4 and the detailed locking mechanism before the lock are not directly related to the present invention, and will be omitted.

  Reference numeral 7 denotes a dead bolt provided in the lock box 1 so as to be able to enter and exit from the mounting plate 4 and the front 6. The dead bolt 7 is guided by the window portion 8, the guide shaft 9, and the like. The dead bolt 7 has a front end portion that engages with a strike (not shown), an intermediate portion that has a horizontal elongated hole that engages with the guide shaft 9, a rear end portion that engages with the dead cam 10, and the like.

  Reference numeral 11 denotes a plurality of internal thread struts fixedly provided on the inner wall surface of the case body 1, and the above-mentioned plurality of fixing means 2 for the lid are screwed onto the internal thread struts 11, respectively. Therefore, the case lid 3 is fixed to the case body 1 via the lid through small hole symbol and the lid fixing means 2.

  Here, the position of the lid fixing means 2 will be described with reference to FIGS. In the present embodiment, since the lock box X is formed in a vertically long shape, a total of six fixing means 2 are used. Thus, two are located in the lower part of the lock box X, and the remaining four are located in the central part and upper part of the lock box X, respectively. The fixing position of the fixing means 2 is different from that of the fixing means for the divided hard defense plate described later.

  By the way, since the plurality of female screw struts 11 are formed so as to protrude from the inner wall surface of the case body 1, the case body 1 naturally has no through-holes for the lid fixing means 2. However, in the present embodiment, not only the case lid 3 but also the case body 1 is an example in which a plurality of (for example, a total of 4) hard divided protection plates are fixedly attached and fixed. An attachment hole for fixing means for attaching and fixing the hard defense plate is formed on the side wall. The mounting holes 12 for the hard defense plate formed in the case body 1 and the case lid 3 are both female screw holes in the present embodiment, and are therefore denoted by the same reference numeral 12 for convenience of explanation.

Thus, the plurality of female screw holes 12 of the case body 1 and the case lid 3 correspond to the positions of the through-holes 26 for the fixing means 27 of the divided hard defense plate 21.22 described later, but on the other hand, the case body. 1 is uniquely formed at a position different from the position of the fixing means 2 for the case lid 3 with respect to 1. That is, each female screw small hole 12 for attaching the split type hard defense plate is not used for the lid fixing means 2 but is formed independently. The reason is that when the lid fixing means 2 is removed from the thief, there is a concern that the split hard defense plate 21.22 and the case lid 1 may be removed together.

  Next, reference numeral 13 is a receiving seat that is caulked and fixed to the inner wall surfaces of the case body 1 and the case lid 3 (the case seat side receiving seat is not shown). A fitting portion having a circular fitting hole is formed to protrude.

  Thus, the above-described cylindrical engagement portion of the dead cam 10 is rotatably fitted in the fitting hole of the receiving seat 13. The dead cam 10 has a drive arm 14 extending in the radial direction from the cylindrical engagement portion, and the drive arm 14 is engaged with the rear end portion of the dead bolt 7. The dead cam 7 is rotated by a driving force of a cylinder or a thumb turn that is operated by operating a key combination. As a result, the dead bolt 7 appears and disappears. The cylinder and thumb turn are omitted.

  Here, the cylinder fitting hole 15 formed in the wide side wall of the case body 1 and the case lid 3 will be described with reference to FIG. The cylinder is selectively attached to the fitting hole 15 on the side corresponding to the outer wall surface of the door. Generally, fitting holes 15 and 15 for cylinders or thumbturns are formed to face each other at appropriate portions of the wide side walls of the case body 1 and the case lid 3 of the lock box X. In this embodiment, the lock box X is formed at a position closer to the rear wall 1a than the center portion and below the center portion. These fitting holes 15, 15 are formed to have a “lantern” outline shape in appearance, and the outer cylinder end portion of the cylinder 16 is attached to one of the fitting holes 15.

  By the way, when the key is operated, the dead cam 10 that engages with the cylinder drive shaft rotates, and the drive arm 14 rotates, for example, in the arrow direction (clockwise) in FIG. Projects in the locking direction). On the other hand, when the drive arm 14 rotates in the counterclockwise direction, a so-called unlocked state is obtained.

Therefore, when there is no key, the thief uses a cutting tool (not shown) to attack the required part of the door and the wide side wall of the lock box 1, particularly the heart part of the lock, respectively, There is a risk of manipulating the heart of the lock using seven tools.
Therefore, in order to prevent the return of the dead bolt 7 (cam feed, movement in the unlocking direction), the present invention uses a plurality of divided hard defense plates as shown in FIGS. X was fixedly attached to the outer wall surface of at least the wide side wall.

(2) Split type hard defense plate 21.22
Each of the divided hard defense plates 21.22 is formed in an end face L shape by quenching carbon steel. As shown in FIG. 2, FIG. 3, etc., there are a total of four split hard defense plates 21.22 in this embodiment.

  That is, with reference to FIG. 2, a lower female defense plate 21 attached and fixed to the case lid 3 side, an upper male defense plate 22 engaged therewith, There are a lower female defense plate 21 attached and fixed, and an upper male defense plate 22 engaged therewith. The split type hard defense plate 21.22 is a so-called four-piece puzzle piece. A total of four defense plates 21.22 are the left and right objects when the rear wall 1a of the case body 1 of the lock box X is used as a reference. Accordingly, here, the defense plate 21.22 on the case lid 3 side will be described, and those on the case body 1 side will be denoted by the same reference numerals and redundant description will be omitted.

  The lower protective plate 21 on the case lid 3 side is connected to the wide side wall portion 21a attached to the wide side wall of the lock box X and to one end portion of the wide side wall portion 21a. It consists of a vertically long side wall portion 21b attached to the rear wall 1a of X. These side walls 21a. 21 b has a plurality of engaged portions 23.24 that engage with the upper male defense plate 22. Here, the notched portion cut out in an inverted T shape at the portion near the center of the upper end portion of the wide side wall portion 21a is referred to as a “first engaged portion 23”, and on the other hand, the upper end portion of the vertically long side wall portion 21b. The portion formed in the L shape is referred to as “second engaged portion 24”.

  Thus, an opening 25 corresponding to the fitting hole 15 of the lock box X is formed at the upper corner of the wide side wall 21a. In addition, two through holes 26.26 corresponding to the two attachment holes 12.12 on the lower side of the lock box X are formed. Therefore, the lower defense plate 21 is fixedly attached to the lower side of the case lid 3 via a plurality of (for example, two) defense plate fixing means 27 inserted into the through hole 26 and the attachment hole 12. The

  On the other hand, the upper protection plate 22 on the case lid 3 side is also connected to the wide side wall portion 22a attached to the wide side wall of the lock box X and to one end portion of the wide side wall portion 22a. It comprises a vertically long side wall portion 22b attached to the rear wall 1a of X. These side walls 22a. 22b, a plurality of engaging portions 23A. 24A. Here, in order to correspond to the first and second engaged portions of the female defense plate 21, the inverted T-shaped engagement protrusion at the portion near the center of the lower end portion of the wide side wall portion 22 a is referred to as “first engagement”. On the other hand, a portion formed in an inverted L shape at the lower end of the vertically long side wall portion 22b is referred to as a “second engaging portion 24A”.

  Thus, a plurality of small through holes 26 respectively corresponding to the three upper mounting holes 12.12 of the lock box X are formed in the wide side wall portion 22a as well as the female defense plate 21. Therefore, the upper defense plate 22 is also fixedly attached to the upper side of the case lid 3 via a plurality of (for example, three) defense plate fixing means 27 inserted into the through hole 26 and the attachment hole 12. The In this case, the reverse T-shaped first engagement portion (engagement protrusion) 23A of the upper protection plate 22 is puzzle-typed on the reverse T-shaped first engagement portion (notch portion) 23 of the lower defense plate 21. Are attached to the lock box X in a state of being “fitting” to the lock box X.

By the way, it is desirable that the height ratio between the male defense plate 22 and the female defense plate 21 that is divided into two parts is approximately 1: 1 to approximately 1: 1.5. The reason for this is that in the case of quenching carbon steel, warping tends to occur as the plate (for example, the lower defense plate 21 or the upper defense plate 22) becomes longer.
Therefore, in this embodiment, as shown in FIGS. 4 and 5, the height ratio between the lower female defense plate 21 and the upper male defense plate 22 is set to approximately 1: 1. However, the height dimension of the upper male defense plate 22 is measured from the upper end surface to the end surface of the engaging projection 23 formed to protrude from the lower end surface.

  In the example shown in the embodiment of the invention, the lower divided hard defense plate 21 and the upper divided hard defense plate 22 are mounted almost entirely on at least one wide side wall of the lock box X. However, it is not necessary to completely protect (cover) from the upper end portion to the lower end portion of the lock box, and it is only necessary to “protect the range in which cam feeding can be prevented” in relation to the purpose of the invention. Therefore, the upper and lower hard defense plates 21 divided into two so as to be able to protect (cover) the dead cam or the cylinder are integrally coupled by the engagement relationship between at least one set of the engaging portion and the engaged portion. It is enough if you do.

  Further, the engagement protrusion 23 corresponding to the first engagement portion is formed in a downward T-shaped shape at a portion near the center portion of the lower end surface, but the shape is not limited to the downward T-shape, for example, It may be L-shaped. Moreover, although the engagement protrusion 23 is single, multiple may be sufficient. Further, the engagement relationship between the first engaged portion 23 and the first engaging portion 23A of the protection plate 21.22 may be reversed.

  The lower and upper divided hard defense plates 21.22 of this embodiment are each formed in an L-shaped end face, and the first engaged portion 23 and the second engaging portion 23A engage with each other in a puzzle manner. However, for example, when the purpose of preventing the upper or lower divided hard defense plate 21.22 from falling is taken into account, it can be an essential part of the present invention.

  The present invention is used as a lock box for a building door.

1 to 6 are explanatory views showing an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows embodiment of this invention. Explanatory drawing from the perspective of a lock box and a split-type hard defense plate. The exploded perspective view of a hard defense board. The front view seen from the case lid side of the lock box. The rear view on the basis of FIG. FIG. 6 is an enlarged schematic cross-sectional view taken along line 6-6 in FIG. 4 (the internal structure is omitted).

X: Lock box, 1 ... Case body, 2 ... Lid fixing means, 3 ... Case lid, 7 ... Dead bolt, 10 ... Dead cam, 14 ... Drive arm, 15 ... Cylinder or thumb turn fitting hole, 21. 22 ... split type hard defense plate (21 ... lower defense plate, 22 ... upper defense plate), 21a. 22a ... Wide side wall, 21b. 22b: Longitudinal side wall portion, 23: First engaged portion, 23A: First engaging portion, 24: First engaging portion, 24A: Second engaging portion, 25: Opening portion, 26: Through hole, 27: Adhering means for the protective plate.

Claims (3)

The end surface L-shaped rigid barrier plate 21 downward with the second engaged portion 24 respectively in the vertical direction of the lock box X in the upper side in the longitudinal direction of the first engaged portion 23 and the lock box X, whereas, the lower side and a upper end surface L-shaped rigid barrier plate 22 having a second engagement portion 24A in the longitudinal direction of the first engagement portion 23A and the lock box X respectively in the vertical direction of the lock box X, the end surface L-type of the lower The rigid hard plate 21 and the upper end face L-shaped hard defense plate 22 are the first engaged portion 23, the first engaging portion 23A, the second engaged portion 24, and the second engaging portion 24A. The door lock box is fixedly attached to the lock box X via a plurality of defense plate fixing means 27 in a state in which they are engaged with each other .
In claim 1, the plurality of female small holes 12 formed on the wide side wall of the lock box X correspond to the positions of the through small holes 26 for the fixing means 27 of the hard defense plate 21.22, A door lock box, which is uniquely formed at a position different from the position of the fixing means 2 for the case lid 2 with respect to the case body.
The height ratio of the male defense plate 22 and the female defense plate 21 divided into two parts in the vertical direction according to claim 1 is a ratio of approximately 1: 1 to approximately 1: 1.5. Lock box.

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