JP2002303064A - Unlocking jig of building lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unlocking jig of a building lock, capable of quietly, simply and quickly making an unlocking operation, even if the building lock has such a structure that it is difficult to make a picking through a key hole of a cylinder and that the cylinder must be broken. SOLUTION: The unlocking jig 15 for unlocking the building lock is constituted of an inserting section 15a, inserted into the inside of a door from a gap between a collar of the cylinder and the door, a cam-hooking section 15b hooked on a projection of a rotational cam inserted into the inside of a lock box from an opening provided to the lock box by extending from the front end of the inserting section 15a and an operating section 15c for rotating the rotational cam in the locking direction by operating the cam hooking section 15b from the outside of the door.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for unlocking a building lock, and more particularly to a jig for unlocking a building lock for a door lock through a gap between a collar of a cylinder and a door. It is about technology.

[0002]

2. Description of the Related Art Conventionally, a lock 10 for a building is shown in FIGS.
As shown in FIG. 1, a collar 5 which is brought into contact with the surface of a door 4 by a spring is fitted on the outer peripheral portion of a cylinder 1 provided with a plug 2 rotated by a key (not shown). A lock box 6 embedded in the door 4 has a rotating cam 7 which is rotated by a key, and which is inserted into a receiving hole of the door frame by projecting from the lock surface 8 when the rotating cam 7 rotates in the locking direction. When the lock 7 rotates in the unlocking direction B (FIG. 10), the slide-type dead bolt 9 that is pulled inside the lock surface 8 is rotated.
And a spring mechanism 40 for holding the dead bolt 9 are housed. In FIGS. 9 and 10, 17a is a screw insertion hole for a decorative plate mounting screw, 21 is a face plate attached to the door 4 side, 22 is a latch bolt drawn into the lock surface 8 by rotation of the knob 23, 41 is Stopper, 4
Reference numeral 2 denotes a deadbolt driver.

[0003]

When the key of the lock 10 for a building is lost, a picking wire of a special shape is generally inserted into the plug 2 through a key hole of the cylinder 1 by requesting a service company. Unlocking is performed by picking while applying rotational force to the plug 2. However, there are locks for building that are difficult to pick or that cannot be picked, such as electronic keys (dimple keys). In the former case, there is a problem that picking takes time and effort. In the latter case, a method of breaking the cylinder 1 with a drill or the like is inevitable, and there is a problem of noise, especially in the case of breaking at night, there is a problem that the neighborhood is troubled, After the tablet is broken, it is necessary to replace the cylinder with a new one.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and aims at a structure in which it is difficult to pick through a key hole of a cylinder, or has to break a cylinder. An object of the present invention is to provide an unlocking jig for a building lock that enables a quiet, simple and quick unlocking operation even for a building lock having no structure.

[0005]

According to the first aspect of the present invention, the surface of the door 4 is mounted on the outer peripheral portion of the cylinder 1 containing the plug 2 which is rotated by a key by a spring. And a lock box 6 embedded inside the door 4 has
A rotating cam 7 rotated by the key, and when the rotating cam 7 rotates in the locking direction A, protrudes from the lock surface 8 and is inserted into the receiving hole of the door frame, and the rotating cam 7 rotates in the unlocking direction B. A lock 10 for a building is formed by housing a sliding dead bolt 9 drawn into the inside of the lock surface 8, and an unlocking jig 1 for unlocking the lock 10 for a building.
5, an insertion portion 15a inserted into the door 4 through a gap 16 between the collar 5 of the cylinder 1 and the door 4, and an insertion portion 1
Opening 1 provided in lock box 6 extending from the tip of 5a
7, a cam hook 15 b inserted into the lock box 6 and hooked on the projection 7 a of the rotary cam 7, and the rotary cam 7 operated by operating the cam hook 15 b from outside the door 4.
And the operating portion 15c for rotating the unlocking jig 15 in the unlocking direction B. With this configuration, the cam hooking portion 15b of the unlocking jig 15 is
By inserting the lock 7 into the lock box 6 and hooking it on the projection 7a of the rotary cam 7 and rotating it, the building lock 10 can be unlocked quietly and easily, and the key lock of the cylinder 1 can be opened. Or difficult to pick
The present invention can also be applied to a building lock having a structure in which the cylinder 1 must be broken.

According to a second aspect of the present invention, in the first aspect, the opening 17 of the lock box 6 is
Preferably, a screw insertion hole 17a is provided at the upper end surface of the door 4 and into which a decorative plate mounting screw 11 for mounting the decorative plate 13 on the surface of the door 4 is inserted. In this case, the decorative plate mounting screw is used. Screw insertion hole 17a into which 11 is inserted
Can be used to unlock the building lock 10.

According to a third aspect of the present invention, in the first aspect, the opening 17 of the lock box 6 is
It is preferable that the opening 17b is provided on the surface opposite to the lock surface 8 of the lock 10. In this case, the opening 10b is used to reduce material costs and the like.
Can be unlocked.

According to a fourth aspect of the present invention, in the first aspect, it is preferable that the cam hooking portion 15b is inclined toward the projection 7a of the rotary cam 7, and in this case, the cam pulling portion is preferably provided. The hook 15b can be easily hooked on the projection 7a.

According to a fifth aspect of the present invention, in the first aspect, a hook groove 12 is formed on the surface of the cam hook portion 15b so as to be hooked on the projection 7a of the rotary cam 7. Preferably, in this case, the projection 7 of the rotary cam 7
The rotation of the rotary cam 7 can be reliably performed without slipping of the cam hooking portion 15b with respect to a.

According to a sixth aspect of the present invention, in the third aspect, the lock box 6 is inserted into the insertion portion 15a of the unlocking jig 15.
It is preferable to provide a driver locking portion 15d which is inserted into the inside from the opening 17b and locks the driver 42 for driving the dead bolt 9 in the locking direction or the unlocking direction. In this case, the driver locking portion 15d is inserted from the opening 17b of the lock box 6 and locked to the driver 42, and the driver 42 is moved to slide the deadbolt 9 in the unlocking direction, so that the building lock is used. The lock 10 can be unlocked.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

The basic structure of the lock 10 for a door lock is the same as that described in the conventional example (FIGS. 8 to 10). That is, a cylinder 1 having a plug 2 into which a key (not shown) is inserted and which rotates, and a collar 5 of the cylinder 1 which is fitted to the outside of the cylinder 1 and abuts against the surface of the door 4 by a spring (not shown). And a lock box 6 buried inside the door 4. The lock box 6 has a rotating cam 7 rotated by a key, and a rotating cam 7.
The sliding dead bolt 9 which is locked or locked by the locking mechanism and the spring mechanism 40 are housed. Here, the collar 5 of the cylinder 1 is spring-biased toward the surface of the door 4 by a spring so as to cope with a change in the thickness of the door 4. The spring mechanism 40 is configured such that when the rotary cam 7 rotates in the locking direction A, the driver 42 retreats and the stopper 41 engages with the dead bolt 9 to hold the dead bolt 9 in a locked state, and When the rotary cam 7 rotates in the unlocking direction B, the driver 42 pushes the stopper 41 in a direction to separate from the deadbolt 9 to hold the deadbolt 9 in the unlocked state. Further, screw insertion holes 17a are provided on both upper and lower end surfaces of the lock box 6, respectively. When the decorative plates 13 (FIG. 9) are mounted on both surfaces of the door 4, a decorative plate mounting penetrating through the inside of the door 4 is provided. The screw 11 is inserted into the screw insertion hole 17 a of the lock box 6 and screwed to the decorative plate 13.

The case where the above-mentioned lock 10 for building is unlocked by using the unlocking jig 15 according to the present invention will be described. As shown in FIG. 1, the unlocking jig 15 of the present embodiment is made of a single metal wire bent in a substantially U-shape, and one end of the metal wire has an operation unit 1.
5c, the other end is an insertion portion 15a folded back into a substantially U-shape. The folded width of the insertion portion 15a is set substantially equal to the thickness of the face plate on one side of the door 4, so that the cam hooking portion 15b provided on the distal end side of the insertion portion 15a
It can be inserted smoothly inside the Also,
By rotating the entire unlocking jig 15 about the insertion portion 15a, the cam hooking portion 15b can be smoothly inserted into the lock box 6 from the screw insertion hole 17a. The cam hooking portion 15b is inserted from the screw insertion hole 17a of the lock box 6 and hooked on the projection 7a of the rotating cam 7 to rotate the rotating cam 7 in the unlocking direction B to thereby lock the dead bolt 9. Works to unlock.

In this embodiment, the cam hooking section 15b is
As shown in (a), the rotary cam 7 includes a plurality of hook grooves 12 hooked on the protrusions 7a. Any one of the plurality of hooking grooves 12 is a protrusion 7a of the rotary cam 7.
By hooking on (FIG. 5), the cam hooking portion 15b does not slip on the rotating cam 7, and the rotating operation of the rotating cam 7 is surely performed. Further, the cam hooking portion 15b is inclined rightward or leftward as shown in FIGS. 2B and 2C so that it can correspond to the positional relationship between the collar 5 of the cylinder 1 and the rotating cam 7 of the lock box 6. I have to. In other words, when the lock box 6 is on the left side when viewed from the collar 5 (so-called right-hand mounting state), use the one in which the cam hooking portion 15b is inclined rightward as shown in FIG. When the collar 6 is on the right side when viewed from the collar 5 (so-called left-handed attachment state), a cam hook 15b that is inclined leftward as shown in FIG. 2C is used. As a result, the gap 16 between the collar 5 and the door 4
When the insertion portion 15a is inserted from the
b is inclined so as to face the rotating cam 7, and the cam hooking portion 1
5b can be easily hooked on the projection 7a of the rotary cam 7.

Next, an example of a case where a trader performs an unlocking operation using the unlocking jig 15 according to the present invention when the key of the building lock 10 is lost will be described. First, as shown in FIG. 3A, the collar 5 of the cylinder 1 is moved in the direction of arrow E, and the cam hook 15b provided at the tip of the insertion portion 15a of the unlocking jig 15 is inserted in the direction of arrow A. Then, the unlocking jig 15 is rotated in the direction of arrow B in FIG.
4A, the cam hook 15b is inserted into the lock box 6 in the direction of arrow C, and hooked on the projection 7a of the rotary cam 7 as shown in FIG. The hook 15b is pulled to rotate the rotary cam 7 in the unlocking direction B (FIG. 5). As a result, the dead bolt 9 is pulled into the inside of the lock surface 8, and the building lock 10 can be unlocked without a key.

Therefore, by providing the unlocking jig 15 according to the present invention to the trader, it is possible to easily and quickly perform the unlocking operation based on a request to open the building lock 10 from a person who has lost the key. Become. In addition, since the rotation jig 15 is rotated by inserting the unlocking jig 15 through the gap 16 between the collar 5 of the cylinder 1 and the door 4, it is difficult to pick from the key hole of the cylinder 1 or the cylinder 1 is broken. It can also handle building locks that have no choice but to take the time and effort of picking as before, no noise is generated, and the cost of replacing with a new cylinder 1 is expensive. Such a problem does not occur. Further, since the unlocking jig 15 has a simple structure in which only one metal wire is bent, there is an advantage that it can be manufactured at low cost and easily.

Further, a cam hook 15b of the unlocking jig 15 is inserted through a screw insertion hole 17a provided in the upper end surface of the lock box 6.
Is inserted into the lock box 6 and the rotary cam 7 is rotated, so that the building lock 10 can be unlocked using the screw insertion hole 17a into which the decorative plate mounting screw 11 is inserted. Moreover, since the cam hook 15b is inclined toward the projection 7a of the rotary cam 7, when the insertion portion 15a is inserted from the gap 16 between the collar 5 and the door 4, the cam hook 15b rotates. By turning to cam 7,
The cam hook 15b can be securely hooked on the projection 7a of the rotary cam 7, so that even a non-skilled person can insert the cam hook 15b into the screw insertion hole 17a and rotate the cam. A series of unlocking operations in which the rotary cam 7 is rotated by hooking on the protrusion 7a of the lock 7 can be performed smoothly and reliably.

As another example of the present invention, as shown in FIG. 6B, a case where an opening 17b for reducing material costs and the like is provided on the surface of the lock box 6 opposite to the lock surface 8 is provided. It is possible to unlock the building lock 10 using the opening 17b. That is, when the decoration plate 13 is attached to the door 4 and the screw insertion hole 17a is closed by the decoration plate attachment screw 11, the rotation operation of the rotary cam 7 from the screw insertion hole 17a cannot be performed. . Therefore, as shown in FIG. 6A, the cam hook 15b of the unlocking jig 15 according to the present invention is moved from the opening 17b provided on the surface opposite to the lock surface 8 of the lock box 6 to the lock box. 6 and presses the projection 7a of the rotating cam 7 from behind to unlock the rotating cam 7 in the unlocking direction B.
Can be rotated. In this case, the building lock 10 can be unlocked using the opening 17b for reducing material costs and the like. In addition, in the example of FIG.
Although the case where b is provided on the upper half of the back surface of the lock box 6 is shown, it may be provided on the entire back surface of the lock box 6.

FIG. 7 shows still another example of the unlocking jig 15.
Is inserted through the opening 17b of the lock box 6 into the insertion portion 15a of the lock box 6 to lock the cam bolt 42a of the driver 42 for driving the dead bolt 9 in the locking direction or the unlocking direction. The case where the driver locking portion 15d described above is provided is shown. The driver engaging portion 15d is inserted into the lock box 6 from the opening 17b and hooked onto the cam connecting portion 42a of the driver 42 to be locked.
By moving 2a in the direction indicated by arrow E in FIG. 7, the rotary cam 7 rotates in the unlocking direction B, and the dead bolt 9 can be slid in the unlocking direction. This allows
Using the opening 17b for reducing material costs, etc.,
The building lock 10 can be unlocked.

In the above embodiment, the opening 17 of the lock box 6 is exemplified by the screw insertion hole 17a provided on the upper end surface of the lock box 6 and the opening 17b provided on the surface opposite to the lock surface 8. What is necessary is that at least one of the screw insertion hole 17a and the opening 17b is provided so as to be compatible with the unlocking jig 15 according to the present invention.

[0021]

As described above, according to the first aspect of the present invention, the collar which abuts on the surface of the door by a spring is fitted into the outer peripheral portion of the cylinder containing the plug rotated by the key. The lock box buried inside the door has a rotating cam that is rotated by the key, and a rotating cam that projects from the lock surface when inserted in the locking direction, is inserted into the receiving hole of the door frame, and is unlocked. When rotated in the lock direction, a slide-type dead bolt that is drawn inside the lock surface is stored to constitute a building lock, and an unlocking jig for unlocking this building lock is a cylinder lock. An insertion portion that is inserted into the door through a gap between the collar and the door; and an insertion portion that extends from the tip of the insertion portion and is inserted into the interior of the lock box through an opening provided in the lock box and hooked on the projection of the rotating cam. Since it is composed of a cam hooking section and an operating section for operating the cam hooking section from outside the door to rotate the rotating cam in the unlocking direction, the cam hooking section of the unlocking jig is opened. By inserting the lock into the lock box and hooking it on the projection of the rotary cam and rotating it, the building lock can be unlocked. Therefore, by providing the unlocking jig according to the present invention to the trader, the unlocking operation can be easily and quickly performed based on a request to open the building lock from a person who has lost the key. In addition, because the unlocking jig is inserted from the gap between the cylinder collar and the door to rotate the rotating cam, it is difficult to pick from the key hole of the cylinder, or for structures with a structure that has to break the cylinder Locking is also possible, and there is no problem that picking takes time and labor, noise is generated, and the cost for replacing with a new cylinder is high as in the past.

According to a second aspect of the present invention, in addition to the effect of the first aspect, an opening of the lock box is provided on an upper end surface of the lock box, and a decorative plate for attaching a decorative plate to a surface of a door. Since the mounting screw is a screw insertion hole, the cam hook of the unlocking jig can be inserted into the lock box from the screw insertion hole, hooked on the projection of the rotating cam, and rotated. The building lock can be unlocked using the screw insertion hole into which the mounting screw is inserted.

According to a third aspect of the present invention, in addition to the effect of the first aspect, the opening of the lock box is an opening provided on the surface opposite to the lock surface of the lock box, so that the unlocking operation is performed. The cam hook of the tool can be inserted into the lock box through the opening and hooked on the protrusion of the rotating cam to rotate. The opening for unlocking the building lock can be achieved by using the opening to reduce material costs. It is possible to do.

According to a fourth aspect of the present invention, in addition to the effect of the first aspect, the cam hooking portion is inclined toward the projection of the rotary cam, so that the cylinder collar can be mounted in the left-right direction. Unaffected, i.e., whether the collar is attached to the front or rear of the door, the cam hook is inserted into the screw insertion hole of the lock box through the gap between the collar and the door. The hook is inclined toward the protrusion of the rotating cam, so that the cam hook can be easily hooked on the protrusion.
As a result, even a non-expert can smoothly and reliably perform a series of unlocking operations of inserting the cam hook into the screw insertion hole, hooking the projection on the rotary cam and rotating the rotary cam. Can be.

According to a fifth aspect of the present invention, in addition to the effect of the first aspect, a hooking groove is formed on the surface of the cam hooking portion so as to be hooked on the projection of the rotary cam. Sliding of the cam hooking portion with respect to the portion can be eliminated, and the unlocking operation of the rotating cam by the cam hooking portion can be reliably performed, and the unlocking operability is improved.

According to a sixth aspect of the present invention, in addition to the effect of the third aspect, the dead bolt is inserted into the insertion portion of the unlocking jig through the opening of the lock box to lock or unlock the dead bolt. A driver locking part is provided to lock the driver to the driver.The driver locking part is inserted into the lock box from the opening and locked to the driver, and the driver is dead bolted. By moving the lock in the unlocking direction, it is possible to unlock the building lock using an opening for reducing material costs and the like.

[Brief description of the drawings]

FIG. 1 is a front view of an unlocking jig showing an example of an embodiment of the present invention.

FIG. 2A is an enlarged view of a hook groove of the above-described cam hook portion, FIG. 2B is an explanatory diagram when the same cam hook portion is inclined to the left, and FIG. FIG.

FIGS. 3 (a) and 3 (b) are explanatory views of a state where the cam hooking unit is inserted into a door.

FIG. 4 (a) is an explanatory view of a case where the cam hooking section is inserted into an opening of a lock box, and FIG. 4 (b) is an explanatory view of a state where the cam hooking section is hooked on a projection of a rotary cam.

FIG. 5 is an explanatory diagram in a case where the rotating cam is rotated in an unlocking direction by pulling a cam hooking portion of the same.

FIG. 6 (a) shows another example of the present invention, and is an explanatory view showing a state in which the cam hook of the unlocking jig is inserted from the opening of the lock box and hooked on the projection of the rotary cam, and FIG. FIG. 2 is a schematic perspective view illustrating an opening of a lock box.

FIG. 7 shows still another example of the present invention, and is an explanatory view showing a state where a driver locking portion of an unlocking jig is inserted from an opening of a lock box and locked to a driver.

FIG. 8 is a perspective view of a lock for a building.

FIG. 9 is a perspective view illustrating a state in which a decorative plate is attached to a lock for a building.

FIG. 10 is an explanatory diagram of an unlocked state of a building lock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder 2 Plug 4 Door 5 Collar 6 Lock box 7 Rotating cam 7a Projection part 8 Lock surface 9 Dead bolt 10 Building lock 11 Decorative plate mounting screw 12 Hook groove 13 Decorative plate 15 Unlocking jig 15a Insertion part 15b Cam hook Part 15c Operation part 15d Driver locking part 16 Gap 17 Opening 17a Screw insertion hole 17b Opening 42 Driver A Locking direction B Unlocking direction

Claims (6)

[Claims] 1. A collar, which comes into contact with the surface of a door by a spring, is fitted around the outer periphery of a cylinder containing a plug rotated by a key, and a lock box buried inside the door is provided with the key by the key. A rotating cam that rotates, and a slide that protrudes from the locking surface when the rotating cam rotates in the locking direction, is inserted into the receiving hole of the door frame, and is drawn into the locking surface when the rotating cam rotates in the unlocking direction. The deadlock of the type is stored and a lock for a building is constituted, and an unlocking jig for unlocking this lock for a building is inserted into the door through the gap between the collar of the cylinder and the door. A cam hook portion extending from the tip of the insertion portion and being inserted into the lock box from an opening provided in the lock box and hooked on the projection of the rotating cam; and a cam hook portion from the outside of the door And an operating unit for rotating the rotating cam in the unlocking direction by operating the unlocking jig. 2. The lock box according to claim 1, wherein an opening of the lock box is a screw insertion hole provided at an upper end surface of the lock box and for inserting a decorative plate mounting screw for mounting a decorative plate on the surface of the door. Item 4. An unlocking jig for a lock for a building according to Item 1. 3. The unlocking jig for a building lock according to claim 1, wherein the opening of the lock box is an opening provided on a surface of the lock box opposite to the lock surface. 4. The unlocking jig for a building lock according to claim 1, wherein the cam hooking portion is inclined toward the projection of the rotary cam. 5. The unlocking jig for a building lock according to claim 1, wherein a hook groove is formed on a surface of the cam hooking portion so as to be hooked on a projection of the rotary cam. 6. A driver locking portion, which is inserted into the lock jig through an opening of the lock box and locks the dead bolt with a driver for driving the dead bolt in the locking direction or the unlocking direction. 4. The jig for unlocking a building lock according to claim 3, wherein the jig is provided.