JP2009114774A - Crime-prevention structure of door lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect an electric thumb-turn unit from an attack from a mechanical tool, and to easily mount it on an inner wall surface of a door. <P>SOLUTION: This crime-prevention structure of a door lock comprises the electric thumb-turn unit which is fixed to the inner wall surface of the door on the basis of the axis line of a cylinder lock on the side of the exterior wall surface of the door and which is provided with an external facing body larger than a diameter of the cylinder lock, and a fastening implement for fixing the electric thumb-turn unit to the cylinder lock. A crime-prevention base for measures against a drill, which is arranged between the inner wall surface of the door and the electric thumb-turn unit, comprises a supporting frame which is formed in such a shape that vertical and horizontal widths are larger than the external facing body and which has a fitting opening overlapping an outer peripheral edge of the external facing body, and at least one guard plate which is integrally fixed to the supporting frame via the fixing means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a security structure for a door lock, and in particular, includes an electric thumb turn unit having an exterior body larger than the diameter of an outer cylinder of a cylinder lock, and can particularly increase the security effect against a drill attack from the outer wall surface of the door. It relates to the security structure of door locks that can be made.

  The subject of the invention of Patent Document 1 is that a drill is used from the periphery of the outer cylinder of the cylinder lock so that a hole is not drilled from the outdoor side of the door to the indoor side. To provide a door lock for unauthorized unlocking that prevents the thumb turn attached to the inside from rotating in the unlocking direction. This also applies to the starting point of the present invention.

  According to the solution of the present invention, the guard plate 30 in which the tip of the drill is inclined by the pressing force of the drill so that drilling by the drill is impossible is provided on the lock case 1 including the periphery of the outer cylinder of the cylinder lock. The peripheral portion is provided in all embodiments.

  For example, the guard plate 30 is provided integrally with the lock case 1 (first embodiment, paragraph 0020, FIG. 5), or is provided integrally with a lock part other than the lock case such as the cylinder 10, the thumb turn 20, or the round seat. (Seventh Embodiment, Paragraph 0033, FIG. 16), or a single unit provided in the door (Embodiment 1, Paragraph 0034, FIG. 3).

  Therefore, the door lock described in Patent Document 1 is hardened and tempered so that the guard plate cannot be drilled even if the tip of the drill hits the guard plate while the thief is drilling using a tool such as a drill. Since the tip of the drill is tilted because it is a hard member such as a thief, the thief cannot achieve intrusion of the house and has an advantage of being excellent in crime prevention effect.

  However, although this Patent Document 1 describes that the guard plate may be provided integrally with a lock part other than the lock case such as a cylinder, thumb turn, and round seat, the application to the “electric thumb turn unit” is described. The specific configuration is not shown. As is well known, the exterior body (including the thumb-turn pedestal) of the electric thumb-turn unit has a drive mechanism including a thumb-turn shaft, wiring, power transmission parts, etc. It is much larger than the diameter of the outer cylinder of the cylinder lock exposed on the outer wall surface side. In other words, for example, the upper and lower lengths of the exterior body are nearly twice the diameter of the outer cylinder, and the vertical length thereof is twice or more the diameter of the outer cylinder.

  Therefore, a cylinder lock attached to the outer wall surface side of the door, and an electric thumb turn unit fixed to the inner wall surface of the door on the basis of the axis of the cylinder lock and having an exterior body larger than the diameter of the cylinder lock. In the door lock provided, the exterior body not only protrudes left and right and up and down from the outer cylinder of the cylinder lock, but depending on the size of the lock box provided with the locking piece, the exterior body may be behind the lock box. It may also stick out of the wall. In this case, in particular, the electric thumb turn unit may be attacked by a thief mechanical tool as described in Patent Document 1.

  By the way, patent document 2 is what the applicant proposed to your office. In FIG. 1, FIG. 2, etc. of this Patent Document 2, there are described matters that cover the entire knob provided on the thumb turn seat as an exterior body, and that the thumb turn seat can also be applied to an electric thumb turn. (Paragraph 0002).

Further, FIG. 1 of Patent Document 3 and paragraph 0015 of Patent Document 4 describe each element (reference) that conceptualizes the “electric thumb turn unit”. That is, the common elements of the electric thumb turn units described in these patent documents are (a) a case-shaped exterior body, (b) a knob provided so as to protrude from the outer wall surface of the exterior body, and (c A thumb-turn drive mechanism including a thumb-turn shaft coupled to the knob; (d) a micromotor as a drive source for the thumb-turn drive mechanism; and (e) a connection means electrically connected to the micromotor.
JP 2004-211400 A JP 2006-118313 A JP 2003-239585 A JP 2005-336835 A

  The first object of the present invention is to protect the electric thumb turn unit from attacks from machine tools and at the same time easily attach it to the inner wall surface of the door (efficiency of mounting work). The second purpose is that there is no rattling even if the electric thumb turn unit is mounted on the inner wall surface of the door (goodness of assembly work). The third purpose is to make the security pedestal as simple as possible and to add design elements to the support frame. Another incidental purpose is that a waterproof effect can be obtained.

  The crime prevention structure of the door lock of the present invention includes a cylinder lock attached to the outer wall surface side of the door, and an exterior that is fixed to the inner wall surface of the door with reference to the axis of the cylinder lock and larger than the diameter of the cylinder lock. In a door lock crime prevention structure comprising an electric thumb turn unit having a body and a fastener for fixing the electric thumb turn unit to a cylinder lock, a countermeasure for drilling is provided between the inner wall surface of the door and the electric thumb turn unit. A security pedestal is provided, and the security pedestal for countermeasures against drills is formed with a support frame having a fitting opening that is formed to be larger in width in the vertical and horizontal directions than the exterior body and overlaps with the outer peripheral edge of the exterior body. And at least one guard plate integrally fixed to the support frame via fixing means.

  The said structure WHEREIN: The said fitting opening of a crime prevention base is a big support frame opening demarcated by the annular support frame which surrounds the outer-periphery edge part of an exterior body inside. Also, the crime prevention pedestal for drill countermeasures is sandwiched between the cylinder lock and the electric thumb turn unit via a fastener that is screwed into the cylinder lock through the positioning opening of the guard plate from the exterior body side. It is characterized by. Furthermore, the crime prevention pedestal for drill measures is provided with an elastic waterproof plate disposed on one side of the guard plate.

(A) The electric thumb turn unit can be protected from attacks from machine tools. That is, as described in Patent Document 1, since a hole is not drilled from the outside of the door to the inside of the room by a drill from the periphery of the outer cylinder of the cylinder lock, it is possible to prevent unauthorized unlocking of a thumb turn turning tool or the like. Can do.
(B) The crime prevention pedestal for countermeasure against drill includes at least one support frame having a circumferential fitting groove that overlaps with the outer peripheral edge of the exterior body, and at least one piece fixed integrally to the support frame via a fixing means. Since it consists of a guard plate, it is only necessary to fit the outer peripheral edge of the exterior body of the electric thumb-turn unit to the support frame when it is attached to the inner wall surface of the door, so the electric thumb-turn unit can be easily attached to the inner wall surface of the door can do. Therefore, the efficiency of the mounting work can be improved.
(C) According to the invention described in claim 3, since it is not necessary to provide a mounting portion for a fastener on the support frame itself, the security pedestal can be made as simple as possible and the outer peripheral wall of the support frame can be Design elements such as shapes can be added.
(D) The invention according to claim 4 can easily obtain a waterproof effect.

  The best mode for carrying out the present invention shown in FIGS. 1 to 9 will be described below (first embodiment).

(1) Environment for Implementing the Invention FIG. 1 is a schematic explanatory diagram showing the environment for implementing the invention. In FIG. 1, 1 is a door for joinery, and the base end side of this door 1 for joinery is attached to the vertical frame of the door frame via a hinge. Therefore, in FIG. 1, the front 2 constituting the lock box on the free end side of the door 1 for joinery can be seen. As is well known, the lock box includes a case body, a case lid, a front plate for attaching the case body, and the front 2 fixed to the front surface of the front plate. Here, since the criminal technique may be taught through a gazette, the detailed explanation about the suggestion drawing, the form of the lock box, and the relationship between the lock box and other members is omitted.

  Now, with reference to FIG. 1, the right side is outdoor and the left side is indoor. Therefore, 3 is a cylinder lock attached to the outer wall surface 1a side of the door 1, while 4 is fixed to the inner wall surface 1b of the door 1 with reference to the axis a of the drive shaft or thumb turn shaft of the cylinder lock 3, and the cylinder lock. An electric thumb turn unit 5 having an exterior body larger than the diameter of the outer cylinder of the lock 3 is a security pedestal sandwiched between the electric thumb turn unit and the cylinder lock 3 via a plurality of fasteners 6. In FIG. 1, for convenience of explanation, the front surface 3a of the cylinder lock 3, the back surface 3b of the cylinder lock 3, and the plurality of fasteners 6 are schematically shown together.

  The basic structural member of the door lock crime prevention structure X according to the present invention is a cylinder lock 3, an electric thumb turn unit 4, and a crime prevention pedestal 5 as well as a lock box (not shown) formed in a predetermined size. And a fastening tool 6 for holding the security pedestal 5 between the electric thumb turn unit 4 and the cylinder lock 3. Hereinafter, specific requirements of the present invention will be described sequentially.

(2) Cylinder lock 3
The cylinder lock 3 is attached to the outer wall surface 1 a side of the door 1. Referring to FIG. 1, 7 is an outer cylinder, 8 is an inner cylinder exposing a keyhole on the front surface 3a side, 9 is a drive shaft (including a tail piece) of the cylinder lock 3 existing on the back surface 3b side, and 10 is a back surface 3b. It is the screwing part (for example, internal thread) for the fastener 6 formed in this. Although the internal structure of the cylinder lock 3 is omitted, for example, a pin tumbler lock in which a movable obstacle moves in the radial direction is used as the cylinder lock 3. In addition, the code | symbol b means the radial direction of the cylinder lock 3, and the code | symbol L means the diameter of the outer cylinder of the cylinder lock 3. FIG.

(3) Electric thumb turn unit 4
The electric thumb turn unit 4 is fixedly fitted and attached to the inner wall surface 1b of the door 1 with the crime prevention pedestal 5 on the basis of the axis a of the cylinder lock 3 and is larger than the diameter L of the cylinder lock 3. have.

  2A is a front view of the electric thumb turn unit 4 fixedly fitted to the crime prevention pedestal 5 as viewed from the indoor side, and FIG. 2B is a concentric circle of the knob 13 and the shaft 13a of the knob 13. It is the front view which looked at the electric thumb turn unit 4 which removed the provided annular thick cover board 14 from the room inner side.

  When the knob 13 and the annular thick cover plate 14 are removed from the upper part of the front wall (front wall) 11a of the exterior body 11, the knob 13 is attached to the central portion of the mounting plate 15 fixed to the inner wall surface of the front wall 11a. A shaft hole 15a for the shaft 13a and a plurality of mounting holes 15b for the fastener 6 formed on concentric circles of the shaft hole 15a can be seen. In FIG. 2B, for convenience, a shaft (or thumb turn shaft) 13b of the knob 13 and the fastening tool 6 are also drawn.

  By the way, the exterior body 11 of the electric thumb turn unit 4 includes a front wall 11a corresponding to the front wall on the front side when viewed from the indoor side, and an inner wall surface 1b of the door 1 from the peripheral end of the front wall 11a as shown in FIG. An annular peripheral side wall 11b extending a required amount on the side, and a thumb turn pedestal integrally connected to the annular peripheral side wall 11b (here, the thumb turn pedestal is also conceptualized as a part of the exterior body 11) 11c.

  The thumb turn pedestal 11c is appropriately fixed at one end to the annular peripheral side wall 11b, while the outer peripheral edge at the other end is just fitted into the fitting opening 22 of the annular support frame 21 of the security pedestal 5. . Further, although not particularly shown, the thumb turn base 11c is also formed in an annular shape like the annular support frame 21 of the security base 5, and has a notch for wiring means at an appropriate place.

(4) Concept of Electric Thumb Turn Unit 4 Here, the electric thumb turn unit will be described. The patent documents relating to the electric thumb turn unit are as described in the “Background Art” section.

  Therefore, with reference to Patent Documents 2 to 4, in this specification, the standard for conceptualizing the electric thumb turn unit 4 is at least (a) a case-shaped exterior body and (b) an exterior body exterior. A knob provided so as to protrude from the wall surface; (c) a thumb-turn drive mechanism including a thumb-turn shaft coupled to the knob; (d) a micromotor or solenoid as a drive source for the thumb-turn drive mechanism; and (e). It can be said that the connection means is electrically connected to the drive source. In addition, since a control part may be arrange | positioned outside an exterior body, a control part does not become a reference | standard which conceptualizes the electric thumb turn unit 4. FIG.

(5) Security pedestal 5
The security pedestal 5 is disposed between the inner wall surface 1 b of the door 1 and the electric thumb turn unit 4. In the present embodiment, for example, the security pedestal 5 is attached to the inner wall surface 1 b of the door 1 with reference to the positioning opening of the guard plate 24 </ b> A, and the exterior body 11 of the electric thumb turn unit 4 is fitted to the fitting opening 22 of the support frame 21. The outer casing 11 and the cylinder lock 3 are integrally fixed via a plurality of fasteners 6 in such a state that the outer casing 11 and the cylinder lock 3 are fitted.

  FIG. 3 is a front view of the security pedestal 5 as viewed from the indoor side (the front wall 11a can be seen by a solid line), while FIG. 4 is a schematic explanatory view from the back of the security pedestal 5. In particular, FIG. 9 is a perspective view showing an example of the constituent members of the crime prevention pedestal 5.

  As shown in FIGS. 1 and 2, the crime prevention pedestal 5 for drill countermeasures is formed such that the vertical and horizontal widths are larger than the exterior body 11 of the electric thumb turn unit 4, and the door inner wall surface side of the exterior body 11 It comprises an annular support frame 21 having a fitting opening 22 that overlaps with the outer peripheral edge portion thereof, and at least one guard plate 24 that is integrally fixed to the support frame 21 via a plurality of fixing means 23.

In this embodiment, the guard plate 24 is fixed to the upper side of the guard plate 24 through a fitting groove 25 provided on the back surface of the support frame 21 as shown in FIG. The guard plate 24A and a horizontally long lower guard plate 24B fixed to the lower side of the guard plate 24 via the fitting groove 25 on the back side of the support frame 21 with a predetermined distance from the upper guard plate 24A. Become.
The upper guard plate 24A and the lower guard plate 24B are formed with a plurality of small through holes 26 and 27 for the fixing means 23 at the peripheral end portion and the left and right end portions.

  By the way, the upper guard plate 24A of the present embodiment is wider in the vertical direction than the lower guard plate 24B, and its upper end edge is formed in an arc shape corresponding to the arc shape of the upper end edge of the support frame 21. Yes. Further, a relatively large positioning opening 28 through which at least the shaft 13a of the knob 13 of the electric thumb turn unit 4 and the fastening tool 6 can be passed is formed in the central portion of the upper guard plate 24A. The size of the positioning opening 28 is set to be equal to or slightly smaller than the diameter L of the outer cylinder 7 of the cylinder lock 3 in consideration of the card function of the upper guard plate 24A. Therefore, the positioning opening 28 is formed within the range of the diameter of the outer cylinder 7 of the cylinder lock 3.

  Here, the fitting opening 22 of the crime prevention pedestal 5 will be additionally described. The fitting opening 22 of the security pedestal 5 is a large support frame opening defined by an annular support frame 21 that surrounds the outer peripheral edge of the exterior body 11 inside. 3, 4 and 7, when the upper guard plate 24A and the lower guard plate 24B are fitted into the fitting grooves 25 on the back side of the annular support frame 21, respectively, Although it is closed corresponding to the areas of the guard plate 24A and the lower guard plate 24B, a gap 30 is formed between the lower end edge of the upper guard plate 24A and the upper end edge of the lower guard plate 24B. In addition, the positioning opening 28 of the upper guard plate 24A and a part of the support frame opening 22 are in communication with each other.

(6) Elastic waterproof board 31
By the way, although it is an accompanying structural requirement, the crime prevention pedestal 5 of this embodiment for drill countermeasures further includes an elastic waterproof plate 31 disposed on one side surface of the guard plate via an adhesive layer. The elastic waterproof plate 31 is any one of a sheet-like rubber, a sheet-like synthetic resin, and a sheet-like sponge. In this embodiment, the elastic waterproof plate 31 is formed in an oval shape, and has an upper guard plate 24A and a lower guard plate. 24B is provided. Note that an opening 32 that coincides with the positioning opening 28 of the upper guard plate 24A is formed at the upper end of the elastic waterproof plate 31, and a small mounting hole 33 is appropriately formed at the lower end.

(7) Mounting work and assembly work As shown in FIGS. 1, 7 and 8, the security pedestal 5 is fixed to the inner wall surface 1b of the door 1, but in this embodiment, as shown in FIG. When the security pedestal 5 is fixed to the inner wall surface 1 b of the door 1, the outer peripheral edge portion of the exterior body 11 of the electric thumb turn unit 4 is inserted into the fitting opening 22 of the security pedestal 5 with reference to the positioning opening 28 of the upper guard plate 24 </ b> A. Fit. Then, since the fitting opening 22 of the security pedestal 5 is defined by the annular support frame 21 that surrounds the outer peripheral edge of the exterior body 11, the electric thumb turn unit 4 is rattled to the security pedestal 5 during mounting work. Is supported stably.

Therefore, the fastener 6 is inserted into the plurality of mounting holes 15b of the thumb turn mounting plate 15 from the exterior body 11 side, and the cylinder lock is passed through the positioning opening 28 of the upper guard plate 24A and the opening 32 of the elastic waterproof plate 31. When screwed into the screwed part of
The security pedestal 5 is sandwiched between the cylinder lock 3 and the electric thumb turn unit 4 in a sandwich shape.

  In the example shown in the embodiment of the invention, the guard plate 24 is composed of “two pieces” of the upper guard plate 24A and the lower guard plate 24B that fit into the fitting groove 25 on the back side of the annular support frame 21. However, of course, “one piece formed in a required size” may be used. Further, the guard plate 24 is fitted into the fitting groove 25 on the back side of the annular support frame 21 in consideration of its ease of attachment, non-movability, etc., and the fitting groove 25 is an essential requirement of the invention. is not. Note that the guard plate 24 is hardened through processes such as quenching and tempering as well as materials.

  The present invention is mainly used in the locksmith and joinery industries.

1 to 9 are explanatory views showing the best embodiments of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows the environment of implementation of invention. FIG. 2A is a front view as seen from the indoor side in a state where the electric thumb turn unit is fitted to the security pedestal. FIG. 2B is a front view of the electric thumb turn unit from which the annular thick cover plate is removed as viewed from the indoor side. The front view which looked at the security pedestal from the indoor side. The schematic explanatory drawing from the back of a security pedestal. Explanatory drawing based on the 5-5 line cross section of FIG. Explanatory drawing based on the 6-6 line cross section of FIG. Explanatory drawing based on the 7-7 line cross section of FIG. Schematic explanatory drawing of mounting work and assembly work. The perspective view which shows an example of the structural member of a crime prevention pedestal.

Explanation of symbols

X: Security structure of door lock, 1 ... Door for joinery, 1a ... Outer wall surface, 1b ... Inner wall surface, 2 ... Front, 3 ... Cylinder lock, 3a ... Front surface, 3b ... Back surface, L ... Diameter of outer cylinder, a ... Axis 4, Electric thumb turn unit 5, Crime prevention pedestal 6, tightening tool 7, outer cylinder 8, inner cylinder 9 drive shaft 10 screw part 11 outer body 11 a front wall (front side) 11b: annular peripheral side wall, 11c: thumb turn base, 13 ... knob, 13a ... shaft, 14 ... annular thick cover plate, 15 ... mounting plate, 15a ... shaft hole, 15b ... mounting hole, 21 ... annular Support frame, 22 ... fitting opening, 23 ... fixing means, 24 ... guard plate, 24 ... A upper guard plate, 24B ... lower guard plate, 25 ... fitting groove, 26, 27 ... small through hole, 28 ... positioning opening 30 ... Gap, 31 ... Elastic waterproof board.

Claims (4)

A cylinder lock attached to the outer wall surface side of the door; on the other hand, an electric thumb turn unit fixed to the inner wall surface of the door with reference to the axis of the cylinder lock and having an exterior body larger than the diameter of the cylinder lock; In a door lock crime prevention structure comprising a fastener for fixing the thumb turn unit to the cylinder lock, a crime prevention pedestal is disposed between the inner wall surface of the door and the electric thumb turn unit, and this drill countermeasure The security pedestal for use is provided with a support frame having a fitting opening that overlaps with the outer peripheral edge of the exterior body, and is fixed to the support frame via fixing means. A door lock crime prevention structure consisting of at least one guard plate fixed together. The door lock crime prevention structure according to claim 1, wherein the fitting opening of the crime prevention pedestal is a large support frame opening defined by an annular support frame that surrounds the outer peripheral edge of the exterior body. The crime prevention pedestal for drill measures according to claim 1 is sandwiched between the cylinder lock and the electric thumb turn unit via a fastening tool screwed into the cylinder lock from the exterior body side through the positioning opening of the guard plate. A door lock crime prevention structure characterized by being pinched. 2. The door lock crime prevention structure according to claim 1, wherein the crime prevention pedestal for drill measures further includes an elastic waterproof plate disposed on one side surface of the guard plate.

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