JP4217771B2 - Cylinder insertion hole obstruction for door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door cylinder tube insertion hole obturator (hereinafter simply referred to as an obturator). In particular, the cylinder tube insertion hole on the outer surface of the door can be easily obstructed with a simple structure. The present invention relates to an occluding device that can be improved.
[0002]
[Prior art]
For example, as shown in FIG. 1, the cylinder lock 2 that houses the cylinder lock 1 protrudes out of the door surface through the side plate of the lock box 3 and the door 4. The protruding portion is covered with the decorative ring 5.
[0003]
Incidentally, the cylinder cylinder 2 itself has a male screw portion 60 formed on the outer peripheral portion of the opening edge thereof screwed into a female screw portion (not shown) provided on the side surface portion of the lock box 3, and this is also set by a set screw (not shown). Fix from the free side edge side.
[0004]
Therefore, in some types of high-grade doors, an escation (decorative seat plate: not shown) may be mounted instead of the decorative ring.
[0005]
This escation is usually a vertically long plate material, and its surface is decorated with sculpture or the like, and is mounted so that it can be called from the indoor side to the outer surface of the door with a mounting screw.
[0006]
[Problems to be solved by the invention]
However, the dimensions of the lock box 3 and the position of the escation mounting screw are determined to be substantially constant, and as shown in FIG. 2, the position of the mounting screw is such that the upper end of the raw hat box is given up.
[0007]
Therefore, as shown in FIG. 2, in order to avoid interference with the escation mounting screw, a screw groove 7 must be formed in the ceiling plate 3a of the lock box 3, and a screw hole 8 must be formed in the upper end of the side plate 3b of the lock box. 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. 2, the screw hole 8 is U-shaped, but there are also semicircular screw holes and rectangular ones depending on the cross-sectional shape of the mounting screws.
[0009]
However, separately manufacturing a lock box having the same mechanism but having a screw groove 7 and a screw hole 8 for mounting screws separately causes an increase in cost and is also controlled. 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 opened in the vicinity of 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 is opened on the outer surface of the door 4, and the cylinder cylinder is inserted from the door outer surface side when the cylinder lock is mounted. The male screw part 6 formed on the outer peripheral part is screwed into a female screw part (not shown) provided on the side part of the lock box 3, and this is also fixed from the free side edge side of the door by a set screw (not shown).
[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 tube insertion hole 11 and between the door outer surface and the lock box 3. Then, since the deadbolt is pulled by pulling this, there is a disadvantage that unauthorized unlocking is not impossible and thus the security property of the lock is lost.
[0013]
It should be noted that this unauthorized unlocking method has a problem in crime prevention when it is made public, and is described in the registered utility model gazette according to utility model registration No. 3080899, and therefore, description thereof is omitted here.
[0014]
An object of the present invention is to provide a closing device having a simple structure for closing the cylinder tube insertion hole 11 opened on the outer surface of the door.
[0015]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention opens a cup-shaped cylinder cylinder carrying a cylinder lock on the inner side and having a male threaded part on the outer peripheral edge of the opening edge on the outer surface of the door with the opening end on the inner side. Inserted into the cylinder tube insertion hole, and fixed to the lock box by screwing the male screw portion into the female screw portion provided on the side surface portion of the lock box. A holding cylinder in which an outward locking portion is formed with an outward locking claw at the inner end opening, a flange that fits outside the holding cylinder and covers the cylinder insertion hole from the outside, and a cylinder cylinder A cylindrical body formed by connecting an insertion hole and a cylindrical portion having substantially the same diameter in the axial direction, and forming a stepped portion that engages with an engaging portion of the holding cylinder at the inner peripheral portion of the outer end opening edge, And having a main body that can be expanded by cutting one portion of the outer peripheral surface along the busbar. And butterflies.
[0016]
【Example】
An embodiment of the present invention will be described below with reference to FIGS.
In FIG. 3, reference numeral 12 denotes a holding cylinder. The holding cylinder 12 is a thin cylindrical body that is fitted to the outside of the cylinder cylinder 2 (see FIG. 6), and becomes an outer side when fitted to the cylinder cylinder. An outward locking portion 13 is integrally formed at the outer end (upper end in FIG. 3) opening.
[0017]
In the illustrated embodiment, the locking portion 13 is integrally formed with the holding cylinder 12 as a flange projecting outward at the outer peripheral edge of the outer end opening.
[0018]
Further, at least one (four in the illustrated embodiment) outward locking claws 14 are formed in the inner end opening of the holding cylinder 12. In the illustrated embodiment, the locking claw 14 is configured to be elastically deformable in the radial direction of the holding cylinder 12.
[0019]
On the other hand, in FIG. 4 and FIG. 5, reference numeral 15 denotes a main body, and the main body 15 includes 16 flange portions that can cover the cylinder insertion hole 11 from the outside.
[0020]
In the illustrated embodiment, the outer shape of the flange portion 16 is a horizontally long oval that circumscribes a cylinder portion 17 described later, as shown in FIG.
[0021]
The main body 15 has an outer diameter substantially the same as that of the cylinder tube insertion hole 11, and has a tube portion 17 fitted on the outside of the holding tube. The tube portion 17 and the flange portion 16 are formed of a cylinder. Are connected in the axial direction (vertical direction in FIG. 5).
[0022]
Further, the outer end (upper end in FIG. 5) of the main body 15 has an enlarged inner peripheral portion of the opening edge, and a step portion 18 (see FIG. 5) that engages with the locking portion 13 (see FIG. 3) of the holding cylinder. ) Is formed.
[0023]
Furthermore, as shown in FIG. 4, one portion of the outer peripheral surface of the main body 15 is cut out along the bus line including the flange portion 16 and the cylindrical portion 17, and a slit 19 is formed. It can be expanded in the direction of increasing the width of the.
[0024]
In the illustrated embodiment, in order to facilitate the expansion of the main body 15, the inner peripheral surface at an angular position symmetrical to the slit 19 with respect to the central axis is stealed to form a thin portion 21.
[0025]
Further, a chamfered portion 22 (see FIG. 5) is formed on the inner peripheral surface of the inner end opening edge portion of the cylindrical portion 17.
[0026]
The obturator according to one embodiment of the present invention configured as described above is arranged at the inner end of the cylinder cylinder 2 with the decorative ring 5 as shown in FIG. 7 after the lock box 3 is attached to the door 4. First, the holding cylinder 12 is fitted. At this time, the cylinder tube 2 is fitted first from the upper end of the holding tube shown in FIG.
[0027]
Next, the main body 15 is wound around the outside of the holding cylinder 12. At this time, if the slit 19 is opened to expand the main body, and the holding cylinder 12 is inserted into the open portion so that the locking portion 13 engages with the stepped portion 18 of the main body, the winding is facilitated. it can.
[0028]
In this case, as shown in FIG. 6, each part of the holding cylinder is engaged so that the locking portion 13 of the holding cylinder engages with the step portion 18 of the main body and the locking claw 14 of the holding cylinder engages with the chamfered portion 22 of the main body. The shape and dimensions are set.
[0029]
Next, contrary to the above, when the ring-shaped main body is tightened in the direction in which the interval between the slits 19 is narrowed, the outer diameter of the cylindrical portion 17 (see FIG. 4) is slightly reduced. The end is inserted through the cylinder tube insertion hole 11 and inserted into the door.
[0030]
Then, the cylinder part 17 of the main body 15 passes through the cylinder cylinder insertion hole 11, but the flange part 16 is hooked on the opening edge of the cylinder cylinder insertion hole 11 on the outer surface of the door (see FIG. 6). .
[0031]
After that, as in the conventional cylinder tube mounting operation, the male screw portion 6 formed on the outer peripheral surface of the inner end of the cylinder tube is screwed into a female screw (not shown) of the lock box side plate, and further fixed with a set screw (not shown).
[0032]
Once mounted, as is apparent from FIG. 6, the main body 15 and the holding cylinder 12 constituting the obturator cannot be pushed into the door, and cannot be extracted from the door outer surface side.
[0033]
In the obturator according to the present invention mounted on the outer surface of the door as described above, it is impossible to lift the movable part of the decorative ring 5 and insert a wire into the door through the gap.
[0034]
As is clear from FIG. 6, the cylinder cylinder insertion hole 11 (see FIG. 1) has the cylinder cylinder 2 itself at the center, and the annular gap around the cylinder cylinder 2 is the cylinder 17 of the obturator and the holding cylinder. This is because 12 is closed.
[0035]
【The invention's effect】
As is apparent from the above description, the present invention is a holding cylinder that is fitted into a cylinder cylinder, and has an outer locking portion formed at the outer end opening and an outer locking pawl formed at the inner end opening. And a cylinder body that is fitted on the outer side of the holding cylinder and covers the cylinder insertion hole from the outside, and a cylinder part having substantially the same diameter as the cylinder cylinder insertion hole. The outer end opening edge has an inner peripheral portion formed with a stepped portion that engages with the locking portion of the holding cylinder, and has a main body that can be expanded by notching one portion of the outer peripheral surface along the generatrix. Since the annular gap around the cylinder cylinder is closed while the holding cylinder and the main body are engaged with each other, unauthorized unlocking by inserting a wire from the cylinder cylinder insertion hole is completely prevented. It has the expected effect of being able to.
[Brief description of the drawings]
FIG. 1 is a diagrammatic sectional view showing an example of mounting of a cylinder cylinder.
FIG. 2 is a partial sectional side view showing an example of the structure of a lock box.
FIG. 3 is a partial cross-sectional side view of a holding cylinder.
FIG. 4 is a rear view of the main body.
FIG. 5 is a partial cross-sectional side view of the main body.
FIG. 6 is a schematic cross-sectional view of a cylinder tube mounting portion on which the obturator according to the present invention is mounted.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylinder lock 2 Cylinder cylinder 3 Lock box 4 Door 5 Cosmetic ring 6 Male thread part 7 Screw groove 8 Screw hole 9 Dead cam 11 Cylinder cylinder insertion hole 12 Holding cylinder 13 Engagement part 14 Engagement claw 15 Main body 16 Eaves part 17 Cylindrical part 18 Step part 19 Slit 21 Thin part 22 Chamfer

Claims (1)

Insert a cup-shaped cylinder cylinder carrying a cylinder lock on the inside and forming an external thread on the outer periphery of the opening edge into a cylinder cylinder insertion hole opened on the outside of the door with the open end on the inside, and lock the external thread For fixing to a lock box by screwing into a female thread part provided on the side part of the box, it is fitted to the cylinder cylinder and has an outward locking part at the outer end opening part and an inner end opening part. An axial direction includes a holding cylinder formed with an outward latching claw, a flange that fits outside the holding cylinder and covers the cylinder insertion hole from the outside, and a cylinder that has the same diameter as the cylinder cylinder insertion hole. And a stepped portion that engages with the engaging portion of the holding cylinder is formed on the inner peripheral portion of the outer end opening edge, and one portion of the outer peripheral surface thereof is cut out along the generatrix. And a cylinder tube insertion hole obturator for the door, characterized in that it has a main body that can be expanded.

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