JP2004124671A - Cylinder insertion hole blocking device for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder insertion hole blocking device for a door which prevents unauthentic unlocking by inserting a wire into a cylinder insertion hole opened to the outside of the door. <P>SOLUTION: A protector ring 12 is fitted the cylinder insertion hole from the outside of the door, and the protector ring 12 is prevented from slipping out of the insertion hole. Then the outer periphery of a cylinder 2 is sheathed with a liner block 13 which is further sheathed with at least one adjusting liner 15 and a ring liner 17. The adjusting liner 15 is formed like a thin annular washer, and has an outer diameter almost the same as the opening rim of a decoration ring. The ring liner 17 has an annular bead portion 16 formed on the periphery thereof to house the adjusting liner 15 in the same. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for closing a cylinder cylinder insertion hole of a door (hereinafter, simply referred to as a closure device). In particular, the cylinder cylinder insertion hole on the outer surface of the door can be easily closed with a simple structure, and the safety of the lock can be improved. A closure device that can be improved.
[0002]
[Prior art]
As shown in FIG. 1, for example, the cylinder lock is attached to the door by inserting a cup-shaped cylinder tube 2 containing the cylinder lock 1 through the side plate of the lock box 3 and the door 4 and projecting out of the door surface. And the projecting portion is covered with a decorative ring 5.
[0003]
Incidentally, the cylinder cylinder 2 itself is fixed to the lock box 3 through mounting blocks 10 and 10 (see FIG. 2) formed on the outer peripheral surface of the opening end edge and mounting rods 6 and 6 penetrating the lock box 3. You.
[0004]
In some high-end doors, an escation (decorative seat: not shown) may be attached instead of the decorative ring.
[0005]
This escation is usually a vertically long plate material, the surface of which is decorated with a sculpture or the like, and is attached so that it can be called on the outside of the door with a mounting screw from the indoor side.
[0006]
[Problems to be solved by the invention]
However, the dimensions of the lock box 3 and the positions of the escation mounting screws are practically fixed. As shown in FIG. 3, the positions of the mounting screws are such that the upper end of the lock box is sharpened.
[0007]
Therefore, as shown in FIG. 3, a screw groove 7 must be formed in the ceiling plate 3a of the lock box 3 and a screw hole 8 is formed in the upper end of the side plate 3b of the lock box in order to avoid interference of the escation with the mounting screw. However, these screw grooves 7 and screw holes 8 are not necessary for a lock box for a door using a decorative ring.
[0008]
In FIG. 3, the screw holes 8 are U-shaped, but there are also semicircular screw holes and rectangular holes depending on the cross-sectional shape of the mounting screw.
[0009]
However, separately manufacturing the lock box having the same mechanism and having the screw groove 7 and the screw hole 8 for the mounting screw and not forming the lock box may cause an increase in cost, and also increase management. Therefore, screw grooves and screw holes are also formed in the lock box for the door to which the decorative ring is attached.
[0010]
The screw groove 7 and the screw hole 8 are open near a dead cam 9 for operating a locking member such as a dead bolt, as shown in FIG.
[0011]
On the other hand, as shown in FIG. 1, a cylinder cylinder insertion hole 11 for passing the cylinder cylinder 2 and the mounting block 10 is opened on the outer surface of the door 4, and the cylinder cylinder mounting block is installed from the door outer surface side when the cylinder lock is mounted. 10 is inserted into the lock box 3, and the mounting rods 6, 6 are inserted into the mounting block 10 from the free side edge of the door to be fixed.
[0012]
Therefore, the movable part of the decorative ring is lifted, and the tip of the wire having a special shape is inserted into the lock box 3 from the screw groove 7 through the cylinder cylinder insertion hole 11 and the outer surface of the door and the lock box 3. Then, since the deadbolt is retracted by pulling the lock, unauthorized unlocking is not impossible, and thus the security of the lock is lost.
[0013]
This method of unauthorized unlocking has a security problem if it is disclosed, and is described in Japanese Utility Model Registration No. 3080899, and will not be described here.
[0014]
The present invention is applicable to an existing cylinder lock, and an object of the present invention is to provide a closing device having a simple structure for closing the cylinder cylinder insertion hole 11 opened on the outer surface of the door.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 provides a cup-shaped cylinder having a cylinder lock held inside and a mounting block protruding from an outer periphery of an opening edge, with the opening end inside. The mounting block in the lock box is inserted through the cylinder box insertion hole opened in the outer surface of the door, penetrates through the side plate of the lock box, and is inserted into the lock box from the free side edge of the door. A cylinder rod is fixed to the lock box by a mounting rod that penetrates the cylinder box, and a portion protruding from the outer surface of the door of the cylinder cylinder is covered with a trapezoidal decorative ring urged in a direction approaching the door surface. In the detached state, a protector ring, which is a thin-walled short cylindrical body with a flange and has an inside diameter that allows the opening end of the cylinder cylinder to be inserted, is fitted into the cylinder cylinder insertion hole from the door outer surface side, and the protector ring is pulled out. On the other hand, a thick-walled cylindrical body having an outer diameter substantially the same as the diameter of the cylinder circumscribing the mounting block of the cylinder cylinder on the outer periphery of the cylinder cylinder, and divided into two or more liners in the circumferential direction. A block is fitted, and at least one adjustment liner having a thin-walled annular washer-like outer diameter substantially the same as the opening edge of the decorative ring is attached to the outer periphery of the liner block, and a ring embankment is provided at the outer periphery. A ring liner and an adjustment liner that are formed and fitted to a ring liner capable of accommodating the adjustment liner in the ring embankment portion, and which contact the outer surface of the door when the open end of the cylinder cylinder is attached to the lock box through the protector ring. Thus, the floating stroke of the decorative ring in the door thickness direction is substantially zero.
[0016]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
4 and 5, reference numeral 12 denotes a protector ring. The protector ring 12 is a thin-walled cylinder having a flange formed at one end, and has an inner diameter capable of passing an opening end of the cylinder cylinder 2 on the mounting block 10 side. are doing.
[0017]
The protector ring 12 is fitted into the cylinder cylinder insertion hole 11 (see FIG. 1) from the outer surface of the door with the open end on which the flange is not formed being inward.
[0018]
The length of the protector ring 12 in the direction of the central axis (the length in the left-right direction in FIG. 4) is set so that the inner end opening thereof keeps a slight gap with the outer surface of the lock box 3.
[0019]
In addition, for both the protector ring 12 and an adjustment liner and a ring liner to be described later, in the case of a new construction, the operation is performed before the cylinder cylinder 2 is mounted, and in the case of the existing cylinder cylinder, the cylinder cylinder 2 is removed from the lock box.
[0020]
To remove the cylinder cylinder 2 from the lock box 3, the head of the mounting rod 6 (see FIG. 1) is exposed by removing the front plate (not shown) of the lock box with the door open. For example, by turning the screw with a screwdriver or the like and then pulling it out and removing it, holding the decorative ring 5 by hand and pulling it outward, the cylinder cylinder 2 can be removed integrally with the decorative ring 5.
[0021]
The protector ring 12 is provided with a stopper so that once it is mounted on the door, it cannot be pulled out.
[0022]
In the illustrated embodiment, for example, as shown in FIG. 5, a plurality of portions of the cylindrical portion of the protector ring 12 are cut and raised outward to form an elastically deformable retaining piece 12b. As shown in FIG. When the ring 12 is mounted on the outer surface of the door, the outer surface of the door 4 is sandwiched between the flange 12a (see FIG. 5) and the retaining piece 12b.
[0023]
By simply mounting the protector ring 12 on the outer surface of the door as described above, the present applicant has the same function as the door cylinder opening hole closing device proposed by the present applicant in Japanese Patent Application No. 2002-173392. Unauthorized unlocking by inserting a wire having a special shape into the door from the insertion hole 11 can be effectively prevented.
[0024]
On the other hand, as shown in FIGS. 2 and 4, liner blocks 13, 13 forming two cylinders, for example, are fitted on the outer peripheral portion of the cylinder cylinder 2 removed from the lock box 3.
[0025]
As shown in FIG. 2, the liner block 13 is formed by cutting a thick-walled cylinder having an outer diameter substantially the same as that of a cylinder circumscribing the mounting block 10 of the cylinder cylinder 2 by cutting surfaces 14 and 4 along the generatrix. It is a member divided into two in the circumferential direction.
[0026]
The function of the liner block 13 is to facilitate mounting and guiding of an adjustment liner and a ring liner described below.
[0027]
As shown in FIG. 4, at least one adjusting liner 15 having a thin annular shape and an outer diameter substantially equal to the opening edge of the decorative ring 5 is provided on the outer peripheral portion of the liner block 13. As shown in FIG. 6, a ring liner 17 having a ring embankment portion 16 formed on the outer peripheral portion is fitted.
[0028]
The ring liner 17 in the illustrated embodiment is formed by forming an annular embankment portion 16 by pressing a ring-shaped thin plate, and then joining a thick reinforcing plate by spot welding, for example.
[0029]
As shown in FIG. 4, the ring liner 17 configured as described above is fitted to the liner block 13 such that the adjustment liner 15 is sandwiched between the ring liner 17 and the decorative ring 5 with the ring embankment portion 16 facing outward.
[0030]
The number of the adjustment liners 15 is adjusted according to the door thickness, that is, the amount of protrusion of the cylinder tube 2 from the outer surface of the door, and when the open end of the cylinder tube 2 is mounted on the lock box 3 through the protector ring, the outer surface of the door is adjusted. The urging spring of the decorative link 5 is fully compressed and contracted by the ring liner and the adjusting liner that comes into contact with the ring, so that the floating stroke of the decorative ring in the door thickness direction is set to substantially zero.
[0031]
In the closing device according to an embodiment of the present invention configured as described above, as is apparent from FIG. 4, since the decorative ring 5 cannot be lifted as already shown in FIG. Unauthorized unlocking by inserting a wire into the insertion hole is not possible.
[0032]
Even if the decorative ring 5 is lifted by any method, the protector ring 12 closes the gap between the cylinder cylinder insertion hole 11 and the side of the lock box, so that the wire reaches the upper part of the lock box from the cylinder cylinder insertion hole 11. I can't.
[0033]
【The invention's effect】
As is apparent from the above description, the present invention allows the protector ring to be fitted into the cylinder cylinder insertion hole from the outer surface of the door and to prevent the protector ring from coming off, while the liner block is provided on the outer peripheral portion of the cylinder cylinder. At least one adjusting liner having a thin-walled annular washer-like outer diameter substantially the same as the opening edge of the decorative ring is formed on the outer peripheral portion of the liner block, and a ring embankment is formed on the outer peripheral portion. A ring liner capable of accommodating the adjustment liner is fitted in the ring embankment portion, and when the opening end of the cylinder cylinder is mounted on the lock box through the protector ring, the ring liner and the adjustment liner abut on the outer surface of the door. Since the floating stroke of the decorative ring in the thickness direction of the door has been reduced to almost zero, the decorative ring cannot be lifted first, thus exposing the cylinder cylinder insertion hole. Can not be, a wire from which it is possible to prevent incorrect unlocking by passing it through the door.
[0034]
In addition, for the same reason, the gap between the cylinder cylinder insertion hole and the lock box side is closed by the protector ring, so the wire cannot reach the upper part of the lock box from the cylinder cylinder insertion hole, and the wire is inserted into the door from here. Unauthorized unlocking caused by passing through the device can be prevented twice.
[0035]
Furthermore, since the ring embankment of the ring liner covers the adjustment liner, various effects such as an improved appearance can be obtained.
[Brief description of the drawings]
FIG. 1 is a diagrammatic sectional view showing an example of mounting a cylinder cylinder.
FIG. 2 is a front view of a cylinder tube.
FIG. 3 is a partial sectional side view showing an example of the structure of the lock box.
FIG. 4 is a diagrammatic cross-sectional view of a cylinder cylinder mounting portion to which a closure according to the present invention is mounted.
FIG. 5 is an enlarged partial sectional view of a protector ring.
FIG. 6 is a sectional view of a ring liner.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylinder lock 2 Cylinder cylinder 3 Lock box 4 Door 5 Decorative ring 6 Mounting rod 7 Screw groove 8 Screw hole 9 Dead cam 10 Mounting block 11 Cylinder cylinder insertion hole 12 Protector ring 13 Liner block 15 Adjustment liner 16 Bridge ridge 17 Ring liner

Claims (1)

Insert the cup-shaped cylinder cylinder, which carries the cylinder lock inside and a mounting block protruding from the outer periphery of the opening edge, into the cylinder cylinder insertion hole opened on the outer surface of the door with the opening end inside, and the side plate of the lock box , The mounting block in the lock box is inserted from the free side edge of the door into the lock box, and is fixed to the lock box by a mounting rod penetrating the mounting block and the lock box, and the cylinder cylinder door A thin-walled short cylindrical body with a flange in a state in which a portion protruding from the outer surface is covered with a trapezoidal decorative ring urged in a direction approaching the door surface, with the cylinder cylinder removed from the lock box, A protector ring having an inner diameter that allows the opening end of the cylinder to be inserted is fitted into the cylinder cylinder insertion hole from the outer surface of the door, and the protector ring is prevented from coming off. A thick-walled cylinder having an outer diameter substantially the same as that of the cylinder circumscribing the mounting block. A liner block divided into two or more pieces in the circumferential direction is fitted thereto. At least one of the adjustment liners having an outer diameter substantially the same as the opening edge of the decorative ring and a ring ridge formed on the outer periphery, so that the adjustment liner can be accommodated in the ring ridge. When the ring liner was fitted and the open end of the cylinder cylinder was attached to the lock box through the protector ring, the ring liner and the adjustment liner contacting the outer surface of the door reduced the floating travel of the decorative ring in the thickness direction of the door to almost zero. A door cylinder closing hole closing device for a door.

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