JPH0853969A - Lock device - Google Patents

Abstract

PURPOSE:To make illegal unlocking practically impossible by providing constitution requiring three-stage operation such as rotation of a rotary member, union with the rotary member by pressing of the rotary member and rotation of the rotary member in a condition of pressing the rotary member. CONSTITUTION:Even if a key 3 is inserted in a key hole of a rotary member 4 and is rotated, since the rotary member 4 only runs idle, both locking and unlocking are impossible. Next, when the rotary member 4 is rotated by the inserted key 3 while pressing it against spring pressure of a spring 8, an engaging projection 9 of the rotary member 4 engages at a recess-projection with an engaging recessed part 12 of the rotary member 5, and the rotary member 4 and a rotary member 5 are united together. In succession, the rotary member 4 is pressed in its position, and when it is further reciprocally rotated while holding this engaged and united condition, the rotary member 5 reciprocally rotates. Then, a dead rod 6 engaging with the rotary member 5 protrudes in and retreats from an engaging hole 15 of a building body 14 from a door 2, and locking or unlocking is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device such as a door for locking / unlocking by inserting a key having a specific shape into a keyhole.

[0002]

A conventional lock widely used at the entrance of a house or the like can be locked / unlocked by inserting a key having a specific shape into a keyhole and rotating it in forward and reverse directions. Due to the structure, there is a problem that it can be unlocked relatively easily by an illegal intruder. Conventionally, this problem has been solved by complicating the shape of the key, but this problem could not be fundamentally solved by a lock that can be unlocked simply by turning the rotating body.

Therefore, an object of the present invention is to insert a key.
By providing a lock that cannot be locked / unlocked only by rotation, it is possible to reliably prevent illegal intrusion.

[0004]

In order to achieve the above object, a key having a specific shape is rotated by inserting and rotating, and is pressed inward of a door against a spring pressure to slide in an axial direction. A rotary member having an engaging portion formed at an eccentric position on the back surface; a rotary member that is rotatably pivoted so as to face the back surface of the rotating member, and that engages with the engaging portion of the rotary member at a position apart from the rotary fulcrum And a dead rod which engages with the rotating member and whose tip is projected and retracted to the outside of the door by the operation of the rotating member.

[0005]

When the key is inserted into the key hole of the rotating member to rotate the rotating member, the rotating member rotates. However, this operation alone causes the rotating member to idle and cannot be locked or unlocked. On the other hand, when the rotating member is rotated while pressing it against the spring pressure with the key inserted in the rotating member, the engaging portion of the rotating member engages with the engaging portion of the rotating member in a concavo-convex manner and rotates with the rotating member. The moving members coalesce. Next, when the rotating member is further rotated forward and backward while pressing the rotating member to maintain the engaged and united state, the rotating member rotates forward and backward, and the dead rod engaged with the rotating member moves the dead rod. It appears and disappears in the concave part of the building body and is locked and unlocked.
That is, the lock device according to the present invention is locked or unlocked by the following three-step operation. (1) Rotating operation of the rotating member (2) Combined operation with the rotating member by pressing the rotating member (3) Rotating operation of the rotating member while pressing the rotating member

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a longitudinal section of a lock device 1 of the present invention assembled in a door 2, and FIG. 2 is a sectional view taken along the line AA of FIG. As shown in FIG. 1, the lock device 1 of the present invention is
A rotary member 4 that is operated by inserting a key 3 of a specific shape, a rotary member 5 that is rotatably pivoted to face the rear surface of the rotary member 3, and a door that engages with the rotary member 5 Dead rod 6 that locks and unlocks by appearing and disappearing from 2
(See FIG. 2).

Although not shown, the rotary member 4 incorporates a pin tumbler that can be rotated only by inserting a key 3 having a specific shape, and is cylindrical in a case 7a fixed to the front plate 2a of the door 2. It is arranged in the frame 7b so as to rotate integrally with the rotation of the key 3. Also, the rotating member 4
As shown in FIG. 1, the spring is axially slidable while being urged to the outside of the door 2 by a spring 8 interposed between it and the tubular frame 7b. Further, the rotating member 4 is integrally provided with an engaging projection 9 at an eccentric position on its back surface.

As shown in FIGS. 1 and 2, the rotating member 5 is rotated on the back side plate 10 of the case 7a arranged on the back side of the rotating member 4 so as to face the back surface of the rotating member 5. It is pivotally attached freely, and an engaging recess 12 is formed at a position distant from the rotation fulcrum 11 so as to engage with the engaging projection 9 of the rotating member 4 in a concavo-convex manner. In the illustrated embodiment, the engaging projection 9 is formed on the rotating member 4 and the engaging concave portion 12 is formed on the rotating member 5. However, the concave and convex engagement of both members 4 and 5 is a projection and a concave. May be. The rotating member 4 may be pivotally attached to the back plate 2b of the door 2 without the back plate 10 of the case 7a.

As shown in FIG. 2, a dead rod 6 engaging with the rotating member 5 is provided in the vicinity of the rotating member 5 with a guide 13.
Is arranged slidably in the axial direction along the rotation member 5
Interlocking with the swing of the door 2, the outside of the door 2, that is, the building body 1
The locking / unlocking is carried out by appearing and disappearing in the engaging hole 15 of No. 4.

In the embodiment shown in FIG. 2, the spring 16 urges the dead rod 6 toward the inside of the door 2, and the base end of the dead rod 6 is moved to the cam surface 1 of the rotating member 5.
By engaging with 7, the rotating member 5 and the dead rod 6 are interlocked. However, the interlocking mechanism of the rotating member 5 and the dead rod 6 is not limited to the structure shown in FIG.
Any other structure may be used. For example, a cam groove may be formed in the rotating member 5, an engaging pin may be provided on the base end side of the dead rod 6, and the cam groove and the engaging pin may be engaged to interlock.

In FIG. 2, 20 is a locking piece fixed to the rotating member 5, and 21a and 21b are engaged with these locking pieces 20 to rotate the rotating member 5 in a locked position and an unlocked position. It is a stopper that regulates to. Although illustration is omitted, preferably, a concavo-convex engagement mechanism for providing a moderation feeling of the locked position and the unlocked position may be provided on the facing surfaces of the rotating member 5 and the case 7a.

FIG. 3 shows another embodiment of the present invention.
In this embodiment, the rotation fulcrum 1 of the rotation member 5 as shown in FIG.
Instead of pivotally attaching 1 to the fixed shaft, a rotary fulcrum 11 of the rotary member 5 is integrally fixed to the rotary shaft 19 of the insertion lever 18 from the back side of the door 2. With this structure, the dead rod can be locked / unlocked from the inside of the door 2 by rotating the lever 18.

Next, the operation of this embodiment will be described.
In the illustrated embodiment, when the rotary member 4 is in the rotary position shown in FIG. 1, the key 3 can be inserted and pulled out. Therefore, when the key 3 is inserted and rotated in the state of FIG. 1, the rotating member 4 rotates. However, in this operation, the rotating member 4
It does not lock / unlock, just spinning around. On the other hand, when the rotating member 4 is rotated while being lightly pressed against the spring 8, the engaging protrusion 9 of the rotating member 4 is located at a position facing the engaging recess 12 of the rotating member 5 as shown in FIG. To rotate. When the rotating member 4 is further pressed against the spring 8 at this position, the rotating member 5 slides inward of the door 2 and the engaging projection 9 and the engaging recess 12 engage with each other in a concave-convex manner, and the rotating member 4 and the rotating member. Five are united.

When the key 3 is further rotated while pressing the rotating member 4 in this state, the rotating force of the rotating member 5 is transmitted to the rotating member 5 as shown in FIG. Rotate around. Since the rotating member 5 is engaged with the dead rod 6, it is interlocked with the operation of the rotating member 5,
The dead rod 6 appears and disappears in the engagement hole 15 of the building body facing the outside of the door 2 to be formed or disentangled. Locking and unlocking are similar operations except that the rotating direction after the rotating member 4 and the rotating member 5 are combined is different.

At the rotational position of the locked or unlocked key 3,
When the pressing force is released, the rotating member 5 is slid toward the front plate 2a of the door 2 by the urging force of the spring 8, and the union of the rotating member 4 and the rotating member 5 is released. Therefore, when the key 3 is rotated in the position of FIG. 1 in this state, the key 3 can be pulled out from the rotating member 4.

[0016]

[Effect] In the conventional lock device, since unlocking can be performed simply by rotating the rotating member, illegal unlocking is relatively easily achieved. However, the lock device of the present invention has a rotating member. Unlocking is not possible only by rotating the rotating member. (1) The rotating member is rotated while being pressed, and (2) When the concave and convex engaging portions are aligned, the pressing force is further increased to combine the rotating member and the rotating member. And (3) further rotate while maintaining the pressing force,
That three-step operation becomes essential. This kind of operation is easy by continuous operation if you use a regular key,
Illegal unlocking without a key is extremely difficult. In particular, it is difficult to rotate and press the rotating member at the same time without a key, and in addition, the pressing force has to be changed at a specific rotating position in the present invention, so that illegal unlocking is practically impossible. Become.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a lock device according to an embodiment of the present invention in a mounted state.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a view corresponding to FIG. 1 according to another embodiment of the present invention.

FIG. 4 is an operation explanatory diagram of the lock device according to the present invention.

FIG. 5 is an operation explanatory view of the lock device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lock device, 2 ... Door, 3 ... Key, 4 ... Rotating member, 5 ... Rotating member, 6 ... Dead rod, 7a ... Case, 7b ... Cylindrical lock frame, 8, 16 ... Spring,
9 ... Engaging projections, 10 ... Support plate, 11 ... Rotation fulcrum,
12 ... Engagement recess, 13 ... Guide, 14 ... Building body,
15 ... Engagement hole, 17 ... Cam surface.

Claims (1)

[Claims] 1. A rotating member that rotates by inserting and rotating a key of a specific shape and slides in the axial direction by pressing against the spring pressure against the inside of the door to form an engaging portion at the back eccentric position. A rotating member that is rotatably and pivotally attached to face the back surface of the rotating member, and that has an engaging portion that engages with the engaging portion of the rotating member in a concavo-convex manner at a position apart from the rotating fulcrum; A lock rod which is engaged with the rotating member and whose tip is projected and retracted to the outside of the door by the operation of the rotating member;