JP4861045B2 - Cylinder lock - Google Patents

Description

  The present invention relates to a cylinder lock that can be changed from a construction key compatible state to an owner key compatible state.

  In a building under construction work, when the outer wall is completed and a door is attached to the opening, and a certain degree of crime prevention can be ensured, the door is locked by a locking device provided on the door. In this case, the cylinder lock constituting the locking device provided on the door is preferably used in a completed building in consideration of economy. Therefore, the construction key used during construction and the owner key used after completion of the building need to be different keys.

  There is a switching cylinder lock that allows the construction key and the owner key to be used properly. The switching cylinder lock is locked and unlocked with a construction key during construction. After the construction is completed, the construction key cannot be used and only the owner key used by the owner can be used. As a result, it is possible to rationalize the lock / unlock operation of the installer during the construction, and further to ensure the safety of the owner.

  Conventionally, this switching cylinder lock is configured such that at least one tumbler selected from among a plurality of tumblers inside the lock is locked at an unlockable position by a locking member, so that the selected tumbler is temporarily set during construction. The construction key is used during the construction to operate only the tumbler in the other working state, and after the construction is completed, the contractor unlocks the selected tumbler using a special tool and puts it into the working state. I was trying to bring it back.

  However, the above-mentioned contractor must bring an owner key that should be handed over to the owner in order to confirm that the construction device has been released together with the special tool, and there is no possibility of duplication of the duplicate key due to loss or maliciousness. I can't say that. On the other hand, if a dedicated lock is attached during construction and replaced with a lock for the owner after the construction is completed, extra labor and cost must be borne, which is uneconomical. Further, the conventional switching cylinder lock has a problem that it is expensive because it has a large number of parts and a complicated structure.

  The present invention has been made in view of the above situation, and a cylinder lock having a simple structure that makes it impossible to use the construction key by releasing the operation restriction of the selected tumbler without using a special tool after the completion of the construction. The purpose is to reduce the work of the locker / unlock management of the contractor and to further improve the security of the owner.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
Shi cylinder lock 100 of the present invention includes owner key for a tumbler 29a to operate in a state of use of construction key 11 is restricted within the tumbler 27 to be more in set, 29b, a 29c, the owner key 13 is used The owner key tumblers 29a, 29b, 29c are operated to make the use of the construction key 11 impossible.
An inner cylinder 19 having a key hole 17 and rotatably installed in the outer cylinder 21;
A release tumbler 37 that operates when the owner key 13 is used;
A release tip 39 driven by the release tumbler 37;
A release pin 49 that is operated by rotating the inner cylinder 19 in which the owner key 13 is inserted in a state in which the release tip 39 is operated;
A cons bar 45 that follows the release pin 49 to release the operation restriction of the owner key tumblers 29a, 29b, 29c;
It is provided with.

  In the cylinder lock 100, once the owner key 13 is used, the cons bar 45 is operated via the release tumbler 37, the release tip 39, and the release pin 49, and the operation restriction of the owner key tumblers 29a, 29b, and 29c. Is canceled and the construction key 13 cannot be used. This eliminates the need to release the operation restriction of the owner key tumblers 29a, 29b, and 29c using a special tool after the completion of the construction.

The cylinder lock 100 according to the present invention is characterized in that the release tumbler 37 and the release tip 39 are disposed at the innermost part of the key hole 17.

  In this cylinder lock 100, the construction key is used when the release tumbler 37 is operated by the tip of the owner key 13 inserted into the key hole 17 and the release tumbler 37 and the release tip 39 are provided in the middle of the key hole 17. Sometimes a mechanism for avoiding these becomes unnecessary.

The cylinder lock 100 of the present invention includes a locking bar 31 that protrudes at the boundary between the inner cylinder 19 and the outer cylinder 21 and restricts the rotation of the inner cylinder 19 relative to the outer cylinder 21.
By inserting the construction key 11 or the owner key 13 into the key hole 17, the locking bar 31 can be withdrawn from the boundary.

  In this cylinder lock 100, the construction key 11 or the owner key 13 is inserted into the key hole 17, whereby the locking bar 31 can be withdrawn from the boundary, and the tumbler 27 is directly connected to the boundary between the outer cylinder 21 and the inner cylinder 19. Compared with the case where the rotation of the inner cylinder 19 is restricted by protruding, the rotation of the inner cylinder 19 using the high-strength locking bar 31 can be restricted.

According to engagement cie Linda tablet in the present invention, includes an owner key for a tumbler actuated is regulated in a use state of construction key, and inner cylinder is installed inside rotatably the outer cylinder, the owner keys are used The release tumbler that operates by the release, the release tip that follows the release tumbler, the release pin that operates when the release tip is activated and the inner cylinder into which the owner key is inserted, and the release pin that operates And a cons bar that releases the operation restriction of the owner key tumbler, so that once the owner key is used once the construction is completed, the operation restriction of the owner key tumbler is released Thus, the use of the construction key is certainly impossible. As a result, it is possible to reduce the lock / unlock management work of the contractor with a simple structure, and to further improve the security of the owner.

According to the cylinder lock of the present invention, since the release tumbler and the release tip are arranged at the innermost part of the key hole, when the construction key is used when the release tumbler and the release tip are provided in the middle part of the key hole. A mechanism for avoiding these becomes unnecessary, and the lock structure can be obtained simply and reliably.

According to the cylinder lock of the present invention, a locking bar that protrudes at the boundary between the inner cylinder and the outer cylinder and restricts the rotation of the inner cylinder with respect to the outer cylinder is provided, and the construction key or the owner key is inserted into the key hole. Because the locking bar can be retracted from the boundary, the strength of the inner cylinder is restricted compared to the case where the rotation of the inner cylinder is restricted by projecting the tumbler directly to the boundary between the outer cylinder and the inner cylinder. Can do.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a cylinder lock according to the invention will be described in detail with reference to the drawings.
1 is an external perspective view of a cylinder lock according to the present invention having a construction key and an owner key, FIG. 2 is a cross-sectional view of the construction key and the owner key, and FIG. 3 is an axis of the cylinder lock shown in FIG. 4 is a sectional view taken along the line AA in FIG. 3, and FIG. 5 is a sectional view taken along the line BB in FIG.
The cylinder lock 100 according to the present embodiment includes a construction key 11 and an owner key 13 as shown in FIG. In the cylinder lock body 15, an inner cylinder 19 having a key hole 17 into which the construction key 11 or the owner key 13 is inserted is rotatably installed in an outer cylinder 21, and the outer periphery of the outer cylinder 21 is a decorative ring 23. Covered by.

  As shown in FIG. 2, the construction key 11 and the owner key 13 have different cross-sectional shapes, that is, key grooves 11a and 13a. Further, the construction key 11 is provided with a notch 25 for not operating a release tumbler described later.

The inner cylinder 19 accommodates a plurality of tumblers 27 arranged in parallel in the insertion direction of the key hole 17 and having key-through openings . The cylinder lock 100 includes an owner key tumbler 29 that is restricted in operation when the construction key 11 is used among a plurality of tumblers 27 provided therein, and the owner key 13 is used by a mechanism described below. The owner key tumbler 29 is activated to disable the use of the construction key 11. The cylinder lock 100 according to the present embodiment includes three owner key tumblers 29a, 29b, and 29c.

  A locking bar 31 extending in the axial direction is provided in the inner cylinder 19, and the locking bar 31 is accommodated slidably in the radial direction of the inner cylinder 19. The locking bar 31 is disposed on the radially outer side of the inner cylinder 19 by the urging force of the coil springs 33 and 33. As a result, the locking bar 31 enters the lock groove 35 of the outer cylinder 21 as shown in FIG. In this state shown in FIG. 4, the locking bar 31 is movable upward by the taper 31 a at the tip contacting the inclined surface 35 a of the lock groove 35 and the inner cylinder 19 being rotated. On the other hand, if the tumbler 27 prevents the upward movement, the rotation of the inner cylinder 19 is restricted. That is, the locking bar 31 protrudes at the boundary between the inner cylinder 19 and the outer cylinder 21 and can restrict the rotation of the inner cylinder 19 with respect to the outer cylinder 21.

  The locking bar 31 is withdrawn from the boundary when the construction key 11 or the owner key 13 is inserted into the key hole 17. According to such a structure that restricts the rotation of the inner cylinder 19 through the locking bar 31, the rotation of the inner cylinder 19 is restricted by causing the tumbler 27 to protrude directly from the boundary between the outer cylinder 21 and the inner cylinder 19. Compared with the case where it does, the rotation control intensity | strength of the inner cylinder 19 can be raised.

A release tumbler 37 shown in FIG. 4 and a release tip 39 shown in FIG. 5 are disposed at the innermost portion of the key hole 17. The release tumbler 37 and the release tip 39 are plate-like and have a key passage opening. The release tumbler 37 is movable in the left-right direction in FIG. 4 by engaging the long hole 37 a with the shaft 41 fixed to the inner cylinder 19. Further, the release tumbler 37 is urged to the right in FIG. 4 by the coil spring 43. The release tumbler 37 has a concave portion 37b that allows the locking bar 31 to rise. Even if the construction key 11 is inserted, the release tumbler 37 is not moved leftward because the protrusion 37c avoids interference by the notch 25. That is, the release tumbler 37 is operated by using the owner key 13 as will be described later.

  The release tip 39 follows the release tumbler 37, engages with the shaft 41 and is movable in the left-right direction in FIG. 5, and can move upward with the notch 39a aligned at the leftward movement position. In addition, the release tip 39 has a recess 39b at the bottom that allows the locking bar 31 to rise.

  A cons bar 45 extending in the axial direction and slidable in the same direction is provided in the inner cylinder 19. The cons bar 45 is applied with a biasing force in the right direction in FIG.

  Further, the inner cylinder 19 is provided with a release pin 49 with which the tip 45a of the cons bar 45 abuts so as to be movable in the vertical direction of FIG. The release pin 49 moves the release tip 39 up and down integrally by engaging the engagement piece 39c of the release tip 39 with the gap 49a.

  As shown in FIG. 3, the cons bar 45 is prevented from moving in the right direction by the tip 45 a coming into contact with the release pin 49. On the other hand, the cons bar 45 is provided with three release recesses 51, 51, 51 corresponding to the owner key tumblers 29a, 29b, 29c. In the cons bar 45 whose tip 45a is in contact with the release pin 49 in the lowered position, the release recesses 51, 51, 51 do not coincide with the owner key tumblers 29a, 29b, 29c. On the other hand, when the release pin 49 rises, the tip 45a enters the stepped portion 49b of the release pin 49, and the cons bar 45 moves to the right in FIG. Thus, the release recesses 51, 51, 51 coincide with the owner key tumblers 29a, 29b, 29c.

Next, the operation of the cylinder lock 100 having the above configuration will be described.
6 is a diagram for explaining the operation during rotation of the inner cylinder of FIG. 4, FIG. 7 is a sectional view in the axial direction of the cylinder lock shown in FIG. 1 when the owner key is inserted, FIG. 7 is a sectional view taken along the line DD of FIG. 7, FIG. 10 is an explanatory diagram of the operation when the inner cylinder is rotated in FIG. 8, and FIG.
When the construction key 11 is used, that is, during construction, the release recesses 51, 51, 51 of the cons bar 45 do not coincide with the owner key tumblers 29a, 29b, 29c, and the owner key tumblers 29a, 29b, 29c are shear lines. Are arranged. That is, the owner key tumblers 29a, 29b, and 29c are maintained in an inoperative state.

  If the construction key 11 is inserted and rotated in this state, the locking bar 31 is withdrawn from the locking groove 35 and pushed up as shown in FIG. In other words, the release tumbler 37 and the release pin 49 are formed with recesses 37b and 39b that allow the locking bar 31 to be lifted, so that the locking bar 31 is allowed to rise, whereby the inner cylinder 19 rotates, that is, , Can be unlocked. Note that in the tumbler 27 (not shown), the tumbler 27 is moved to a predetermined position on the left and right by the keyway, and the respective recesses coincide with the locking bar 31.

  On the other hand, as shown in FIGS. 7, 8, and 9, when the owner key 13 is inserted, the release tumbler 37 is engaged against the urging force of the coil spring 43 by engaging the key groove 13 a with the projection 37 c. 8 is moved to the left. Further, the release tip 39 is also moved to the left in FIG. 8 because the engagement piece 39d shown in the drawing is engaged with the engagement recess 37d of the release tumbler 37. In this state, in the release tip 39, the notch 39a is disposed immediately below the shaft 41 (see FIG. 9).

Next, as shown in FIG. 10, when the owner key 13 is rotated clockwise in the figure, the locking bar 31 enters the recess 37 b of the release tumbler 37. At this time, as shown in FIG. 11, the bottom of the release tip 39 is pressed by the locking bar 31 and pushed upward. When the release tip 39 moves upward, the release pin 49 is also driven and moved upward. When the release pin 49 is moved upward, as shown in FIG. 7, the tip 45 a of the cons bar 45 enters the stepped portion 49 b of the release pin 49, and as a result, the cons bar 45 is pressed by the biasing force of the coil spring 47. Slide to the right. Accordingly, the release recesses 51, 51, 51 formed in the cons bar 45 coincide with the owner key tumblers 29a, 29b, 29c.

  In this way, the owner key 13 is inserted once, the release tip 39 is activated, and the inner cylinder 19 is rotated, whereby the release pin 49 is activated, and the cons bar 45 slides following the release pin 49. Thus, the operation restriction of the owner key tumblers 29a, 29b, and 29c is released. Thereafter, the tip 45a of the cons bar 45 locks the release pin 49 in the raised position, and the release tip 39 also stays in the raised position.

  As a result, the construction key 11 cannot be used. Therefore, it is not necessary to release the operation restriction of the owner key tumblers 29a, 29b, and 29c using a special tool after the completion of the construction.

  Therefore, according to this cylinder lock 100, the inner cylinder 19 provided with the owner key tumblers 29a, 29b, 29c, whose operation is restricted when the construction key 11 is in use, is rotatably provided in the outer cylinder 21. The release tumbler 37 that operates when the owner key 13 is used, the release tip 39 that is driven by the release tumbler 37, and the inner cylinder 19 in which the owner key 13 is inserted while the release tip 39 is in operation. Provided with a release pin 49 that operates by being operated, and a cons bar 45 that follows the release pin 49 and releases the operation restriction of the tumblers 29a, 29b, and 29c for the owner key. Even if the owner key 13 is used once, the owner key tumbler 29a, 9b, operation regulations 29c is released, the use of construction key 11 becomes impossible. As a result, it is possible to reduce the lock / unlock management work of the contractor with a simple structure, and to further improve the security of the owner.

  Further, since the release tumbler 37 is actuated by the tip 45a of the owner key 13 inserted into the key hole 17, when the construction key is used when the release tumbler 37 and the release tip 39 are provided in the middle of the key hole 17, A mechanism for avoiding this becomes unnecessary. This also simplifies the lock structure.

In the above embodiment, the case where there are three owner key tumblers 29a, 29b, and 29c has been described as an example, but the owner key tumblers are one, two, or a plurality of three or more. It may be.
In the above-described embodiment, the owner key tumblers are arranged adjacent to each other. However, the owner key tumblers are arranged in a distributed manner without being adjacent to other positions such as in front of the key holes or the intermediate portion. It may be a thing.
Furthermore, in the above embodiment, the case where the tumbler 27 is plate-shaped has been described as an example. However, the cylinder lock according to the present invention may be a combination of a pin-shaped pin tumbler and a plate-shaped tumbler. . By such a combination, a more complicated key mechanism can be configured.

FIG. 1 is an external perspective view of a cylinder lock according to the present invention having a construction key and an owner key. It is sectional drawing of a construction key and an owner key. It is an axial sectional view of the cylinder lock shown in FIG. 1 in a construction key insertion state. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is operation | movement explanatory drawing at the time of the inner cylinder rotation of FIG. It is an axial sectional view of the cylinder lock shown in FIG. 1 in an owner key insertion state. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is operation | movement explanatory drawing at the time of inner cylinder rotation of FIG. It is operation | movement explanatory drawing at the time of the inner cylinder rotation of FIG.

11 ... Construction key 13 ... Owner key 17 ... Key hole 19 ... Inner cylinder 21 ... Outer cylinder 27 ... Tumbler 29a, 29b, 29c ... Owner key tumbler 31 ... Locking bar 37 ... Release tumbler 39 ... Release tip 45 ... Cons bar 49 ... Release pin 100 ... Cylinder lock

Claims (1)

Among the tumblers (27) that are arranged in parallel in the insertion direction of the key hole (17) in the inner cylinder (19) and have a key- like opening in a plate shape, the operation is restricted when the construction key is used. The owner key tumbler (29), and the owner key is used to operate the owner key tumbler (29) to disable the use of the construction key.
An inner cylinder (19) having a key hole (17) and rotatably installed in the outer cylinder (21);
When the construction key or the owner key is inserted into the key hole and the inner cylinder (19) is rotated, a spring bias is applied to the boundary between the inner cylinder (19) and the outer cylinder (21). A locking bar (31) that protrudes from the outer cylinder (21) to restrict the rotation of the inner cylinder (19);
A release tumbler (37) that operates when the owner key is inserted into a key-through opening and used;
Driven to the release tumbler (37), a release tumbler (37) and parallel plate, and release the chip (39) that have a opening through key the owner key is inserted, the release tip (39) A release pin (49) that is activated by rotating the inner cylinder (19) in which the owner key is inserted,
A cons bar (45) extends slidably in the axial direction in the inner cylinder (19), and its tip (45a) abuts on the release pin (49) by a spring bias, and the release pin (49 ) And the sliding movement in the axial direction to release the operation restriction of the owner key tumbler (29), thereby permitting the use of the owner key and disabling the use of the construction key. and Konsuba (45) that,
Equipped with a,
The release tumbler (37) and the release tip (39) are disposed at the innermost part of the key hole (17),
The release tumbler (37) is movable in the left-right direction by engaging a long hole (37a) with a shaft (41) fixed to the inner cylinder (19) and is unidirectionally driven by a spring. The bottom of the release tumbler (37) is urged to move, and a recess (37b) is formed to allow the locking bar (31) to rise into the inner cylinder (19). The release tumbler (37) Even if the contraction key is inserted into the through-opening, it does not move in the other direction.
The release tip (39) engages with the shaft (41) and is movable in the left-right direction, and is movable upward in the movement position to the other side. A recess (39b) that allows the locking bar (31) to rise into the inner cylinder (19) is formed at the bottom,
The release pin (49) is integrated with the release tip (39) by engaging an engagement piece (39c) projectingly formed on the release tip (39) into the groove (49a) formed in the groove shape. Up and down,
The concave portion (37) formed in the bottom of the release tumbler (37) and the release pin (49) by inserting the contraction key into the key hole (17) of the inner cylinder (19) and rotating it. 37b, 39b) the base of the locking bar (31) enters, the inner cylinder (19) is made rotatable and can be unlocked,
By inserting the owner key into the key hole (17) of the inner cylinder (19), the release tumbler (37) is moved to the other side against the spring bias, and the release tip ( 39) is moved in the other direction, and a notch (39a) formed in the inner periphery of the key-through opening is arranged directly below the shaft (41) so that it can be moved upward. By rotating, the locking bar (31) enters the recess (37b) of the release tumbler (37), and the release tip (39) is pushed upward by the locking bar (31), When the release tip (39) is pushed upward and moved, the release pin (49) is driven and moved upward, whereby the cons bar The tip (45a) of 45) enters the stepped portion (49b) formed on the release pin (49) and the operation restriction by the tumbler (29) for the owner key is released, so that the owner key can be used. Allow and disable the use of the construction key,
In this state, the tip (45a) of the cons bar (45) enters the step (49b) of the release pin (49) to lock the release pin (49) in the raised position, and the release tip (39) also The cylinder lock characterized in that the locking piece (39c) engages with the groove-like gap (49a) of the release pin (49) and remains in the raised position .

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