JP2004353275A - Cylinder pick-off protective structure for lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect a lock from cylinder pick-off. <P>SOLUTION: In this cylinder pick-off protective structure for the lock, an outer cylinder end part 30 of a cylinder 29 is inserted in a cylinder fitting hole 28 of a lock case 1, while a protective block 35 having a plurality of horizontal guide holes 50 communicating with horizontal through holes 31, 31 of a vertical pair of projecting parts 32, 32 of the outer cylinder end part 30 is built in between bearing seats 21 provided at the internal wall surface of the lock case. The protective block 35 and the cylinder 29 are integrally connected in a skewered state through a plurality of long and thin protective bars 36 inserted into the lock case from upper and lower through holes 7, 8 of a mounting plate 4 of the lock case. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cylinder lock protection structure for a lock.
[0002]
[Prior art]
JP-A-2003-120083 is described as a conventional example. The lock structure described in this publication uses a plier having a pinched portion by a thief, and prevents the fixed cylinder and the cylinder lock from being forcibly "peeled off" together with the decorative ring.
[0003]
However, in recent years, the methods of thieves have deteriorated, and drilling holes have been made in the decorative ring of the cylinder or the outer wall surface of the door around the outer cylinder using cutting tools such as carbide drills and carbide hole saws. In some cases, the peripheral edge of the fitting hole for mounting is broken, and the cylinder lock (hereinafter, referred to as “cylinder”) itself is “stripped”. In such a case, it is not always sufficient to take measures only for the protective structure of the cylinder, and it is necessary to take measures to remove the cylinder of the lock from another viewpoint.
[0004]
[Problems to be solved by the invention]
A first object of the present invention is to provide a lock cylinder peeling prevention structure which can protect even when a thief attacks a lock by drilling a hole in an outer wall surface of a door using a carbide drill or a carbide hole saw. That is. Thereby, "stripping of the cylinder" can be prevented. A second object is that an existing lock box can be used as it is without improving a case body and a case lid and a mounting plate that constitute the lock box. A third object is to effectively utilize the internal space of the lock box and not to hinder (interfere with) the operation of the dead cam. A fourth object is to tightly combine the cylinder and the guard block with the lock box.
[0005]
[Means for Solving the Problems]
According to the lock-off cylinder peeling prevention structure of the present invention, the outer cylinder end 30 of the cylinder 29 is inserted into the cylinder fitting hole 28 of the lock box 1, while being located between the receiving seats 21 provided on the inner wall surface of the lock box. A protection block 35 having a plurality of horizontal guide holes 50 respectively communicating with the horizontal through holes 31.31 of the pair of upper and lower protrusions 32.32 of the outer cylinder end 30 is incorporated. , And are integrally connected in a skewered manner through a plurality of elongated defense rods 36 inserted into the lock box from upper and lower through holes 7.8 of the mounting plate 4 of the lock box.
[0006]
In the above-described configuration, the protection block 35 communicates with the receiving hole 45 so as not to interfere with the receiving hole 45 and the dead cam 25 which are externally fitted to the peripheral wall of the fitting portion 23 protruding from the receiving seat 21 of the case body. It is characterized by having a notch 46.48 to be formed. Further, the protection block 35 is characterized in that it is fixed in the lock box via the support pillar 17 and the mounting hole 47 fixedly provided in the lock box.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
First, an environment for implementing the present invention will be described with reference to FIGS. Reference numeral 1 denotes a lock box. The lock box 1 includes a case body 2 and a case lid 3 connected to the case body via fixing means. The case body 2 has a vertically long mounting plate 4, a relatively short interposed 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. Fixtures for securing the front 6, the intervening plate 5, and the mounting plate 4 and the locking mechanism of the lock are omitted because they are not directly related to the present invention.
[0008]
Reference numeral 7.8 denotes a total of four through holes formed in the mounting plate 4 and the intervening plate 5 and the like. These through holes 7.8 will be described later when a cylinder or a thumb turn is mounted on site. Four elongated defense rods are inserted respectively.
[0009]
Numeral 9 denotes a deadbolt horizontally provided on the lock box 1 so as to be able to enter and exit from the mounting plate 4 and the front 6. The deadbolt 9 is guided by a window 10, a guide shaft 11 and the like. The dead bolt 9 has a front end portion 12 that engages with a strike (not shown), an intermediate portion 14 that has a horizontal elongated hole 13 that engages with the guide shaft 11, a rear end portion 15 that engages with a dead cam, and the like. A fin-shaped engaging projection 16 is provided in the center of the upper wall of the portion 14 in the direction of emergence.
[0010]
Reference numeral 17 denotes a plurality of female screw posts fixedly provided on the case body 2, and a plurality of fixing tools 18 are screwed to these female screw posts 17, respectively.
Reference numeral 21 denotes a receiving seat fixed to the inner wall surface of the case body 2 by caulking, and a fitting portion 23 having a circular fitting hole 22 protrudes from the center of the receiving seat 21. A receiving seat having a fitting portion is provided on the inner wall surface of the case lid 3 similarly to the case body 2 (not shown).
[0011]
Thus, the cylindrical engaging portion 26 of the dead cam 25 shown in FIG. 10 is rotatably fitted into the fitting hole 22 of the receiving seat 21 (including the receiving seat of the case lid 3). The dead cam 25 has a drive arm 27 extending in a radial direction from a cylindrical engagement portion 26, and the drive arm 27 is engaged with the rear end 15 of the dead bolt 9 described above. The dead cam 25 is rotated by a driving force of a cylinder or a thumb turn operated by operating a duplicate key. As a result, the dead bolt 9 appears and disappears.
[0012]
Here, the cylinder fitting holes formed on the wide side wall of the case body 3 will be described with reference to FIGS. 8 and 9. Generally, a fitting hole 28 for a cylinder and a fitting hole (not shown) for a thumb turn are formed at the corners of the wide side walls of the case body 2 and the case lid 3 of the lock box 1, respectively. These fitting holes are formed in a contour shape of “lantern” in appearance, and the outer cylinder end 30 of the cylinder 29 is inserted into the fitting hole 28 on the case body 2 side.
[0013]
By the way, at the upper and lower portions of the outer peripheral wall of the outer cylinder end 30 of the cylinder 29, projections 32.32 having horizontal through holes 31.31 through which the plurality of elongated defense rods 36 penetrate are formed, respectively. I have. When the outer cylinder end 30 of the cylinder 29 is inserted or inserted into the fitting hole 28 on the case body 2 side, a pair of upper and lower protrusions 32.32 is formed on the peripheral wall of the fitting part 23 of the receiving seat 21. It protrudes from the upper and lower arc-shaped notches 33.33.
[0014]
Next, a main part of the present invention will be described with reference to FIGS. FIG. 3 is a perspective view of the defense block 35. As shown in FIG. 10, the defense block 35 is disposed between the receiving seat 21 of the case body 2 and the receiving seat of the case lid 3 (internal space), and is fitted into at least the fitting hole 28 of the lock box 1. And a pair of upper and lower protruding portions 32.32 of the outer cylinder end 30 of the cylinder 29 thus formed are integrally connected via a plurality of (for example, two to four) elongated protective rods 36.
[0015]
The structure of the gate-shaped defense block 35 will be described with reference to FIG. Reference numeral 37 denotes a vertical side wall on the case lid 3 side, and the vertical side wall 37 is restricted by the inner wall surface of the case lid 3. Reference numeral 38 denotes a vertical side wall on the case body side, and the vertical side wall 38 is restricted by the inner wall surface of the case body 2 (directly in a state of being in surface contact with the receiving seat 21). Reference numeral 39 denotes a front wall on the front side, and the front wall 39 is regulated by a guide plate described later. Reference numeral 40 denotes a rear wall regulated by the inner wall surface of the rear wall of the lock box 1. Reference numeral 41 denotes an upper wall regulated by the inner wall surface of the upper wall of the lock box. Reference numeral 42 denotes a bottom wall on the rear end side of the dead bolt 9.
[0016]
A relatively large receiving hole 45 is formed in the center of the vertical side wall 37.38, and this receiving hole 45 communicates with a central notch 46 formed in the center of the lower end (bottom wall). ing. The receiving hole 45 is installed in the receiving seat 21 through the mounting holes 47 and 47 formed on the right and left portions of the upper end portion (upper wall portion) of the defense block 35 and the female screw support 17 on the case body 2 side. Is externally fitted to the peripheral wall of the fitting portion 22 of the receiving seat 21 with a margin. In this case, the receiving hole 45 is externally fitted to the peripheral wall of the fitting portion of the receiving seat (not shown) of the case lid 3 with a margin.
[0017]
Here, another notch will be described with reference to FIG. A bottom wall cutout 48 communicating with the center cutout 46 from the front wall 39 to the rear wall 40 is formed in the bottom wall 42 of one portal-shaped defense block 35. The bottom wall cutout portion 48 and the center cutout portion 46 are provided so as not to interfere with a dead cam (commonly called “Dharma”) or the like. Therefore, the shapes of the bottom wall cutout 48 and the center cutout 46 can be arbitrarily changed in design.
[0018]
The horizontal guide hole 50 for the defense rod will be described with reference to FIGS. 4 and 5. As described above, when the cylinder 29 or the thumb turn (not shown) is mounted on the lock box 1, for example, a total of four elongated defense rods 36 are connected to the protection block 35 and the protection block 35 through the upper and lower through holes 7.8 of the mounting plate 4. The upper and lower projections 32.32 of the outer cylinder end 30 of the cylinder 29 are respectively inserted.
[0019]
Therefore, at the upper end and the lower end of the defense block 35, a total of eight horizontal guide holes 50 for defense rods are formed on the upper and lower through-holes 7.8 of the mounting plate 4 or at positions similar thereto. I have. Next, the eight horizontal guide holes 50 will be supplementarily described. As shown in FIGS. 4 and 7, the four horizontal guide holes 50 formed on the front wall 39 side of the defense block 35 are in a horizontal state, but the four horizontal guide holes 50 formed on the rear wall 40 side. The hole 50 has a slightly gradual curvature (slightly arc-shaped) so that the elongated defense bar 36 does not easily come off.
[0020]
As shown in FIG. 7, the horizontal through holes 31.31 of the pair of upper and lower protrusions 32.32 of the outer cylinder end 30 of the cylinder 29 and the upper and lower sides of one side (case body side) of the protection block 35 and the front and rear sides Since the horizontal guide hole 50 communicates with the horizontal line, the two elongated defense rods 36 are connected to the upper and lower horizontal guide holes 50 on one side (case body side) of the defense block 35 from the upper and lower through holes 7.8 of the mounting plate 4. It is necessary to pierce the horizontal through holes 31 and 31 of the outer cylinder end 30 of the cylinder 29 in a so-called skewered shape. When the two elongated protective bars 36 are stabbed, the protective block 35 and the cylinder 29 are integrally connected.
[0021]
Therefore, although not particularly shown, the thumb turn is also provided with the remaining two elongated protective rods 36 through the upper and lower through holes 7.8 on the other side of the mounting plate 4 to guide the upper and lower horizontal sides of the other side (case lid side) of the protective block 35. By piercing the hole 50.50 and the horizontal through hole at the end of the outer cylinder of the thumb turn into a so-called skewered shape, the defense block 35 and the thumb turn are integrally connected.
[0022]
As shown in FIG. 10, in the present embodiment, a guide plate 55 that engages with the engagement projection piece 16 of the dead bolt 9 is fixedly disposed in the case body 3, and the upper and lower two The elongated defense rods 36.36 also penetrate through small through holes formed above and below the guide plate 55. Therefore, the protection block 35 and the cylinder 29 are further combined with the lock box 1.
[0023]
【Example】
The defense block 35 is formed in a gate-shaped shape so as to be restricted by the inner wall surface of the lock box 1, but is not limited to this form. The design can be arbitrarily changed as long as it does not cause an obstacle to the darma or the operating piece that constitutes the application / unlocking mechanism (for example, an example of forming a slightly thick plate). Further, the protection block 35 is formed in a single block from the viewpoint of simplification of assembly, but may be formed in a two-part block as long as the object and function of the invention are the same. Further, the protective block 35 may be formed into a thick plate or block by quenching carbon steel so as to withstand a cutting tool such as a carbide drill or a carbide hole saw.
[0024]
【The invention's effect】
As is apparent from the above description, the present invention has the following effects.
(1) It is possible to provide a lock-off cylinder peeling prevention structure that can protect even when a thief attacks a lock by making a hole in the outer wall surface of the door using a carbide drill or a carbide hole saw. Thereby, "stripping of the cylinder" can be prevented.
(2) The existing lock box can be used as it is without improving the case body and the case seat and the mounting plate constituting the lock box.
(3) The invention described in claim 2 effectively utilizes the internal space of the lock box and does not hinder (do not interfere) the operation of the dead cam.
(4) The cylinder and the protection block can be firmly combined with the lock box.
(5) In the case of the embodiment in which the defense block is formed in a single gate shape, the incorporation can be simplified.
[Brief description of the drawings]
1 to 10 are explanatory views showing an embodiment of the present invention.
FIG. 1 is a schematic explanatory view showing an example of an implementation environment (lock box) to which a main part of the present invention conforms.
FIG. 2 is a schematic explanatory view showing a place to be arranged in a lock box.
FIG. 3 is a perspective view of a main part (defense block, elongated defense bar) of the present invention.
FIG. 4 is an explanatory diagram from the left side of the defense block.
FIG. 5 is a schematic sectional view taken along line 4-4 in FIG. 3;
FIG. 6 is an explanatory view from the bottom of the defense block.
FIG. 7 is a schematic cross-sectional explanatory view in which a defense block and an outer cylinder end of a cylinder are connected via an elongated defense bar.
FIG. 8 is a schematic explanatory view of a cylinder fitting hole of the lock box.
FIG. 9 is a schematic explanatory view when the outer cylinder end of the cylinder is inserted into the cylinder fitting hole of the lock box.
FIG. 10 is a schematic explanatory view showing an example of an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lock box, 2 ... Case body, 3 ... Case lid, 4 ... Mounting plate, 6 ... Front, 7, 8 ... Through hole, 9 ... Deadbolt, 17 ... Post, 21 ... Receiving seat, 22 ... Fitting hole , 23 ... fitting part, 25 ... dead cam, 26 ... cylindrical engaging part, 27 ... drive arm, 28 ... cylinder fitting hole, 29 ... cylinder, 30 ... outer cylinder end part, 31 ... horizontal through hole, 32 ... projecting part, 33 ... arc-shaped notch part, 35 ... defense block, 36 ... elongated protection rod, 37, 38 ... vertical side wall, 39 ... front wall, 40 ... rear wall, 41 ... top wall, 42 ... bottom wall, 45 ... receiving hole, 46 ... central notch, 47 ... mounting hole, 48 ... bottom wall notch, 50 ... horizontal guide hole, 55 ... guide plate.

Claims (6)

The outer cylinder end 30 of the cylinder 29 is inserted into the cylinder fitting hole 28 of the lock box 1, while a pair of upper and lower protrusions of the outer cylinder end 30 is provided between the receiving seats 21 provided on the inner wall surface of the lock box. A protection block 35 having a plurality of horizontal guide holes 50 respectively communicating with the horizontal through holes 31.31 of the portion 32.32 is incorporated, and the protection block 35 and the cylinder 29 are vertically penetrated through the mounting plate 4 of the lock box. A lock-off cylinder peel-off prevention structure, which is integrally connected in a skewered manner through a plurality of elongated protection rods 36 inserted into the lock box through holes 7.8. In the first embodiment, the protection block 35 is provided in the receiving hole 45 so as not to interfere with the receiving hole 45 and the dead cam 25 which are externally fitted to the peripheral wall of the fitting portion 23 formed on the receiving seat 21 of the case body. A lock cylinder having a cut-off portion (46.48) that communicates with the lock. A cylinder according to claim 1 or 2, wherein the protection block (35) is fixed in the lock box through a support (17) and a mounting hole (47) fixedly provided in the lock box. Wrestling defense structure. 2. The structure according to claim 1, wherein the protection block 35 is formed in a single block body. The protection block 35 according to claim 1, wherein the protection block 35 is fixedly disposed in the lock box, and is connected to a guide plate 55 through which two upper and lower elongated protection bars 36 and 36 penetrate. Cylinder protection structure to lock the lock. 2. The structure as claimed in claim 1, wherein the protection block 35 is formed in a thick plate shape.

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