JP3984682B2 - Keyhole sealing tool for cylinder lock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealing tool for a keyhole of a cylinder lock. For example, when a renter is behind with rent in a rental housing, the owner side (lessor or manager) consciously and punishes the key (joint key) of the residence. It is intended to make it unusable and has been proposed as a completely new tool.
[0002]
[Problems to be solved by the invention]
The cylinder key lock device of the cylinder lock of the present invention prevents, for example, the owner from locking and unlocking the door of the residence when the renter is unreasonably delinquent. It was proposed to make it impossible for tenants to use the residence.
[0003]
[Means for Solving the Problems]
In order to achieve the above-described object, a cylinder lock locking device of the present invention is a cylinder lock comprising a sealing piece that is removably inserted into a key hole of a cylinder lock, and an extraction jig that extracts the sealing piece from the key hole. It is a keyhole sealing tool, which is a plate-shaped body with a tip formed in a chevron shape and its slope as an inclining inclined portion, and has a cross-sectional shape substantially the same as the cross-sectional shape of the keyhole and its length. The length is set to be equal to or less than the length of the keyhole, and the sealing piece formed with a hook-shaped restraining portion at the tip, and the stem portion on the front side and the knob portion on the rear side are integrally coupled to each other. parts are therewith has a width and length such to complement the notches the sealing piece can be engaged wear, removal and formed into substantially the same shape as a part of its cross-sectional shape corresponding the cross-sectional shape of the keyhole Osamu When these sealing pieces and extraction jigs are fitted together, they face each other. An engaging part is formed on one of the sides, and a notch that engages with the engaging part is formed on the other side. When the sealing piece is inserted into the key hole, at least one tumbler is sealed against the restraining part from the rear. The piece is restrained so that it does not come out of the keyhole, and the keyhole is sealed.When the piece is removed, the stem portion of the extraction jig is inserted into the keyhole and the guide inclined portion at the tip thereof is The opposing tumbler was eliminated, and one of the engaging parts and the other notch were engaged to connect the sealing piece and the extraction jig, and the sealing piece was extracted from the key hole together with the extraction jig. It is characterized by.
[0004]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
The lock hole sealing device according to the present invention can be employed in any cylinder lock such as a rotary disc cylinder lock, a sliding disc cylinder lock, or a pin cylinder lock as long as it has a tumbler. The cylinder lock 10 shown in FIGS. 3 and 4 which is a target in this embodiment is a rotary disk cylinder lock.
[0005]
1 to 4, reference numeral 1 denotes a plate-like sealing piece that forms one main member of the present invention, 2 denotes a key-shaped extraction jig that similarly forms another main member of the present invention, and 10 denotes an outer cylinder portion. 20 is a rotary disk cylinder lock as a cylinder lock having an inner cylinder part 30; 40 is a plurality of tumblers interposed between the outer cylinder part 20 and the inner cylinder part 30; and 50 is a key provided on the inner cylinder part 30. Each hole is shown.
[0006]
The keyhole sealing tool of the present invention comprises a sealing piece 1 that is grasped with a finger into the keyhole 50 of the cylinder lock 10 and is detachably inserted, and an extraction jig 2 that extracts the sealing piece 1 from the keyhole 50. The sealing piece 1 and the extraction jig 2 are strong and can be made of a hard synthetic resin material or brass or other metal material.
[0007]
The blocking piece 1 shown in FIG. 1 has a cross-sectional shape substantially the same as that of the key hole 50 of the cylinder lock 10, and has a length equal to or less than the length of the key hole 50 in the insertion direction. It is.
[0008]
The reason why the length of the blocking piece 1 is made smaller than the length of the key hole 50 of the cylinder lock 10 is that when the length is made larger than that of the key hole 50, when the blocking piece 1 is inserted into the cylinder lock 10, This is because the rear end portion protrudes from the key hole 50, and the blocking piece 1 is forcibly extracted by using that portion as a clue.
[0009]
In FIG. 1B, reference numeral 11 denotes a ward provided on one surface or both surfaces of the flat portion of the blocking piece 1 so as to correspond to a ward (not shown) of the key hole 50. Needless to say, the ward 11 of the blocking piece 1 is formed in substantially the same shape as the ward of the key (not shown) for the cylinder lock 10.
[0010]
Further, the blocking piece 1 includes a guide inclined portion 12 at the tip, and a notch 13 on at least one side of the rear side. The notch 13 is provided on one or both sides of the sealing piece 1 inserted into the cylinder lock 10 with which the rotary disk or other tumbler 40 of the cylinder lock 10 abuts.
[0011]
In the illustrated cylinder lock 10, the tumbler 40 is arranged so as to abut on both sides of the blocking piece 1, but the notch 13 is provided only on one side of the blocking piece 1.
[0012]
Further, at the edge of the notch 13, at least one of the tumblers 40 faces from the rear when the blocking piece 1 is attached to the cylinder lock 10, and the stem portion 21 in the extraction jig 2 described later. engagement part 2 4 has an engagement portion 15 that match therewith.
[0013]
The restraining portion 14 is provided at the front edge of the notch 13. Further, the locking portion 15 in the illustrated example has an elongated side surface shape corresponding to the side surface shape of the engaging portion 24 formed by the elongated protrusion of the extraction jig 2 in the substantially central portion of the edge portion of the notch 13 in the front-rear direction. It is formed as a groove.
[0014]
However, the position and shape of the locking portion 15 can be arbitrarily designed. For example, in terms of the shape, the engaging portion 15 of the blocking piece 1 can be a protruding piece and the engaging portion 24 of the extraction jig 2 can be a groove, contrary to the illustrated example.
[0015]
Next, the extraction jig 2 clearly shown in FIG. 2 will be described in detail.
The extraction jig 2 includes a front stem portion 21 and a rear knob portion 22 integral therewith.
[0016]
The stem portion 21 has a width and a length so as to complement the notch 13 in the above-described blocking piece 1 to which the stem portion 21 can be detachably engaged (engaged), and the cross-sectional shape thereof is a crossing of the key hole 50. It is formed substantially in the same shape as the corresponding part of the surface shape.
[0017]
Furthermore, the stem portion 21 of the extraction jig 2 has a guide inclined portion 23 at the tip, and an engaging portion 24 formed as a long and slender integral protrusion at a location corresponding to the locking portion 15 of the blocking piece 1. It has. The position and shape of the engaging portion 24 on the stem portion 21 can be arbitrarily designed similarly to the engaging portion 15 of the blocking piece 1 described above.
[0018]
In FIG. 2B, reference numeral 25 denotes a ward provided on one surface or both surfaces of the stem portion 21 of the extraction jig 2 so as to correspond to a ward (not shown) of the key hole 50.
[0019]
Needless to say, the ward 25 of the stem portion 21 is formed in a shape substantially the same as a part of the ward of the key (not shown) for the cylinder lock 10.
[0020]
Next, the operation (use) of the tool according to the present invention will be described with reference to FIGS.
In order to seal the key hole 50 of the cylinder lock 10 using the tool of the present invention and make it impossible to insert the key (not shown) into the lock 10, the sealing piece 1 is grasped with a finger, and FIG. Is pushed into the key hole 50 of the cylinder lock 10 as indicated by an arrow P in FIG.
[0021]
As shown in FIG. 3 (B), in the intermediate process in the insertion of the blocking piece 1, the leading inclined portion 12 is biased by a spring or the like so as to occupy the position on the center side of the inner cylinder portion 30. Since the plurality of tumblers 40 are pushed against the urging force and the block 1 is allowed to advance, the block 1 is entirely inserted into the key hole 50 as shown in FIG. Will be.
[0022]
In the state in which the blocking piece 1 is inserted into the key hole 50, the upper end edge in FIG. 3C receives elasticity in a direction inclined in the key hole 50 from the tumblers 40, 40 which are elastically contacted thereto. Since it has a cross-sectional shape as shown in FIG. 1B and is restrained by the keyhole, it does not tilt.
[0023]
And since all the tumblers 40 located in the notch 13 portion of the blocking piece 1 are returned to the original central position by the biasing force of a spring or the like, the first tumbler 40 in the restored tumbler 40 [FIG. )] Directly corresponds to the restraining portion 14 of the blocking piece 1.
[0024]
Therefore, since the sealing piece 1 is restrained by one (40a) of the tumbler 40, unless the extraction jig 2 is used, it cannot be extracted by anyone other than the owner side, and the rent is delinquent. The person cannot insert the key, and the cylinder lock 10 cannot be locked or unlocked.
[0025]
On the other hand, in order to extract the blocking piece 1 from the cylinder lock 10 with the key hole 50 sealed as described above, the knob portion 22 of the extraction jig 2 is grasped with fingers and the stem portion 21 is shown by an arrow in FIG. As indicated by Q, it is inserted into the space 50a formed by the notch 13 of the blocking piece 1 in the key hole 50 of the cylinder lock 10.
[0026]
As shown in FIG. 4 (B), in the intermediate process in the insertion of the extraction jig 2, the leading inclined portion 23 includes the tumbler 40 a that restrains the blocking piece 1, and the center side of the inner cylinder portion 30. The stem portion 21 is allowed to move forward while allowing some of the tumblers 40 biased so as to occupy the position of the position to be pushed against the biasing force. As shown, almost the entire length can be inserted into the keyhole 50.
[0027]
Then, the engaging portion 24 on the stem portion 21 in the extraction jig 2 engages with the locking portion 15 of the sealing piece 1 when the insertion of the jig 2 is completed, and the extraction jig 2 and the sealing piece 1 Are attached to each other in the length direction (insertion / removal direction). Therefore, if the extraction jig 2 is pulled out with fingers as shown by an arrow R in FIG. It can be extracted from the keyhole 50 of the lock 10 without being obstructed by the tumbler 40.
[0028]
In an intermediate process in extracting the extraction jig 2 and the sealing piece 1 associated with the extraction jig 2, each tumbler 40 is in contact with flat surfaces on both sides or one side of the assembly constituted by the extraction jig 2 and the sealing piece 1. Therefore, the extraction of both members 1 and 2 is not hindered by the tumbler 40.
[0029]
Here, the cylinder lock 10 returns to the normal state without the blocking piece 1 as the filling [see FIG. 3A].
[0030]
By the way, when the engagement of the engaging portion 24 and the locking portion 15 of the sealing piece 1 is not successful when the insertion of the extraction jig 2 is completed, play between the keyhole 50 is advantageous. If the stem portion 21 of the jig 2 is pushed so as to approach the blocking piece 1 in the width direction, both can be easily engaged.
[0031]
The keyhole sealing tool of the present invention can be used regardless of whether the cylinder lock 10 is in the locked state or in the unlocked state. In other words, the insertion and removal of the blocking piece 1 and the extraction jig 2 can be performed regardless of whether the cylinder lock 10 is applied or unlocked.
[0032]
【The invention's effect】
According to the keyhole sealing device for cylinder locks according to the present invention described above, when the owner of a rental house wants to make the key of a residence (door) necessary to be unlocked and unlocked, it can be easily operated. In addition, there is an effect that the unlocking / unlocking state can be easily released.
[0033]
In addition, the keyhole sealing tool of this invention can also be used as a means for locking a cylinder lock double as another use, when not using a residence for a long period of time or leaving it.
[Brief description of the drawings]
1A and 1B are views showing a sealing piece as one of the tools in the embodiment of the present invention, in which FIG. 1A is a side view, and FIG. 1B is an end view taken along line II of FIG.
FIGS. 2A and 2B are diagrams showing an extraction tool as the other tool in the embodiment of the present invention, in which FIG. 2A is a side view, and FIG. 2B is an end view taken along line II-II in FIG.
FIGS. 3A to 3C are explanatory views sequentially showing a process of inserting a blocking piece into a cylinder lock.
4 (A) to 4 (D) are explanatory views sequentially showing a process of extracting a sealing piece from a cylinder lock with a removal jig.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cylinder lock 40 Tumbler 50 Key hole 1 Sealing piece 12 Guide inclination part 13 of a sealing piece Notch 14 Restraint part 15 Locking part 2 Extraction jig 21 Stem part 22 Knob part 23 Guide inclination part 24 of extraction jig Engagement part

Claims (1)

A blockade tool keyhole of the cylinder lock comprising a sequestering piece plugging detachably on the keyhole of the cylinder lock and its blockade piece withdrawn from the keyhole extraction jig shaping the tip Yamagata induce tilting the slope The cross-sectional shape of the tip of the plate-shaped body is almost the same as the cross-sectional shape of the keyhole, and the length is set to be equal to or less than the length of the keyhole. A sealing piece that forms a part, and a stem part on the front side and a knob part on the rear side are integrally coupled, and the stem part has a width that complements the notch of the sealing piece to which it can be engaged, and A pulling jig having a length and a cross-sectional shape of which is substantially the same as the corresponding part of the cross-sectional shape of the keyhole, and when the sealing piece and the pulling jig are fitted together, An engaging part is formed on one of the opposite sides and a notch is formed on the other side to engage with this engaging part. When the sealing piece is inserted into the keyhole, the at least one tumbler faces the restraining portion from behind and restrains the sealing piece so that it does not come out of the keyhole. Insert the stem part of the jig into the key hole and eliminate the tumbler facing the constraining part of the sealing piece by the guiding inclined part at the tip of the jig. Also, the one engaging part and the other notch are engaged and sealed. A keyhole sealing tool for a cylinder lock, wherein the piece and the extraction jig are connected, and the sealing piece is extracted from the keyhole together with the extraction jig .

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