JP2003013642A - Lock device, and unlocking prevention method for lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock device having a simple construction and requiring no basic design change as well as an unlocking prevention method for the lock device capable of definitely preventing picking crime particularly when the occupant of a house is at home. SOLUTION: A lock face plate 10 is provided at the front side of a frame 1 of a lock device A1. A dead bolt 2 and a latch bolt 3 are located at the lower side of the lock face plate 10. The dead bolt 2 is fixed to the end portion of a slider which is slidable inside a frame 1. The slider is provided with an interlocking member. The interlocking member is interlocked with the dead bolt 2 and moves back and forth. A linking hole is provided near one end of the interlocking member. A lid body 11 of the frame 1 has a lock pin device 6. The position of the lock pin 61 of the lock pin device 6 corresponds to the position of the linking hole of the interlocking member when the dead bolt 2 is set to a locked state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device and an unlocking prevention method for a locking device. More specifically, the present invention relates to a device capable of preventing invasion by picking, having a simple structure for a device for preventing picking, requiring no fundamental design change, and being manufactured at low cost.

[0002]

2. Description of the Related Art In recent years, a so-called picking (picking) method, which does not use a key and uses a special tool to pry and unlock a locking device such as a front door in a very short time
Theft by g) is increasing rapidly. In addition, there are many cases where an intruder can get injured while being invaded by picking while at home. The tools for picking can be bought online, etc., and even if you read technical books, even beginners can quickly do it, so the root of this problem is deep.

For this reason, lock device manufacturers have developed and sold lock devices that are hard to be picked, and due to the sense of crisis in ordinary households, the replacement of lock devices is gradually progressing. A rotary disk cylinder lock is mainly used as such a lock device, and an electronic lock and the like are also used.

[0004]

However, the above-mentioned rotary disc cylinder lock and electronic lock which are difficult to be picked up have the following problems. That is, the locking device that is easily picked is a disk cylinder lock that has a simple structure and is inexpensive, and this disk cylinder lock is most popular. However, rotary disc cylinder locks and electronic locks are basically different in design from disc cylinder locks and are expensive. Therefore, the present inventor has repeatedly studied whether it is possible to provide an inexpensive locking device that can surely prevent picking by making a slight design change to a disk cylinder lock that is relatively simple in structure and inexpensive, and It came to completion.

(Object of the Invention) An object of the present invention is to provide a lock device and a method for preventing unlocking in the lock device, which can prevent intrusion by picking. Another object of the present invention is to provide a locking device that has a simple structure for preventing picking, does not require a fundamental design change, and can reliably prevent picking especially at home. .

[0006]

[Means for Solving the Problems] The means of the present invention taken to achieve the above object are as follows. According to a first aspect of the present invention, in a lock device having a structure in which a lock member is interlocked to prevent a door or window from opening by operating a key inserted in a keyhole, the lock device is a door or window lock. The lock device has a built-in mechanism inside, and the lock device operates the mechanism by inserting the unlocking means into the keyhole, and the locking member in the locked state is unlocked in conjunction with the movement of the mechanism. A lock member fixing device for preventing movement to the side is provided.
The lock device is characterized in that one end is configured to operate the mechanism part and the other end is exposed to the indoor side of the door, and the movement of the mechanism part can be controlled from the indoor side.

According to a second aspect of the invention, there is provided a fixing means for fixing the lock member or the interlocking member interlocking with the lock member when the lock member moves and is in the locked state. The lock device is characterized in that it cannot be unlocked from the outside when the lock member or the interlocking member is fixed.

In the third invention, the interlocking member interlocking with the lock member and having the engaging portion, and the engaging portion of the interlocking member when the lock member moves and is locked. And a locking body for fixing the interlocking member together, and when the interlocking member is fixed in a locked state, the locking device is prevented from being unlocked from the outside.

According to a fourth aspect of the present invention, the lock member or the interlocking member interlocking with the lock member can be fixed from outside the room. It is a lock device.

According to a fifth aspect of the present invention, there is provided a means for fixing the lock member or the interlocking member interlocking with the lock member by remote control. 4 is a lock device according to the invention of No. 4.

According to the sixth aspect of the invention, when the lock member moves and is locked, the lock member or the interlocking member interlocking with the lock member is fixed so that it cannot be unlocked from the outside. Is a method for preventing unlocking in a lock device.

The "lock member" referred to in the present specification can be paraphrased (expressed) as Kannuki, bolt, dead bolt and the like. The interlocking member may be one that is merely inside the locking device and interlocks with the lock member, or, for example, like a thumb turn provided inside the room, the lock member is moved to lock and unlock. It may be capable of The movement of the interlocking member is not particularly limited, and may be linear or curved movement or rotation, for example.

The fixing means for fixing the interlocking member is not particularly limited as long as the interlocking member can be securely fixed in the locked state of the lock member. For example, one that engages or fits into some or all of the interlocking member to immobilize,
For example, a part or the whole of the interlocking member may be sandwiched or clamped so as not to move, or an interlocking member may be provided with an engagement hole to insert and fix a pin.

(Operation) The lock device according to the present invention operates as follows. Close the door with the locking device installed,
Operate the thumb turn etc. on the indoor side to move the lock member and lock it. At this time, in the device provided with the interlocking member, the interlocking member interlocks with the lock member and stops at a predetermined position.

The locking member in the locking position or the interlocking member in the above-mentioned predetermined position is fixed by a fixing means such as a structure for engaging the engaging portion and the engaging body. Accordingly, for example, even if the lock member is moved from the outside with a special tool without using a key, the lock member or the interlocking member is fixed, and consequently the lock cannot be unlocked.

Even if a key is used, it cannot be unlocked from the outside, but since the fixing means is operated by a person from the inside of the room, the person stays indoors when the family member returns home. All you have to do is contact the person and there is no problem.

In the structure in which the lock member or the interlocking member interlocking with the lock member can be fixed from the outside of the room, the lock member at the locking position or the interlocking member at the above-mentioned predetermined position is moved out by remote operation or the like. Sometimes it can be fixed from outside.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing a first embodiment of a lock device according to the present invention,
FIG. 2 is a side view of the locking device shown in FIG. 1 in which a lid is partially cut away and a locking member is projected to be in a locked state.

Reference numeral A1 is a lock device, which is a type provided on an opening door. The lock device A1 includes a frame 1.
On the front side of the frame 1, a vertically long rectangular lock surface plate 1
0 is provided. A dead bolt 2 and a latch bolt 3 are vertically adjacent to each other on the lower side of the lock plate 10.

The dead bolt 2 is for performing the final tightening of the door and constitutes a lock member. The dead bolt 2 can be put in and out by inserting a key into the key hole and turning the cylinder 5 with the key. By projecting the dead bolt 2 and engaging it with a receiving hole (not shown), the door can be fixed in the closed state. Further, the latch bolt 3 is for performing the air-tightening of the door, and can be put in and out by turning a door knob (not shown).

The dead bolt 2 is fixed to the end of a slider 20 which is slidable inside the frame 1.
Further, the slider 20 is provided with the interlocking member 4. The interlocking member 4 interlocks with the dead bolt 2,
Moves back and forth in the left and right direction. An engagement hole 40 is provided near one end of the interlocking member 4.

The lid 11 of the frame 1 is provided with a lock pin device 6 at a required position. Lock pin device 6
Has a base 60 accommodating a spring and locking means, and a lock pin 61 provided vertically through the base 60. When the lock device A1 is incorporated in the door, the lock pin 61 is exposed to the inside of the door.

Each time the lock pin 61 is pushed once, the lock pin 61 moves alternately to the inside of the frame 1 and stops, and moves to the outside of the frame 1 to stop. The position of the lock pin 61 corresponds to the position of the engagement hole 40 of the interlocking member 4 when the dead bolt 2 is locked.

(Operation) FIG. 3 shows the structure of the interlocking member and the engaging member, and is an explanatory cross-sectional view of the main part in the unlocked state. FIG. 4 shows the structure of the interlocking member and the engaging member. FIG. 7 is an explanatory cross-sectional view of a main part in a state where the member is engaged with the engagement hole of the interlocking member.
The operation of the lock device A1 will be described with reference to FIGS. 1 to 4.

The lock device A1 according to the present embodiment operates as follows. The locking device A1 is incorporated in a door that opens and closes by rotating. Close the door incorporating the locking device A1. By operating the thumb turn on the indoor side, the dead bolt 2 is projected to be locked. At this time, the interlocking member 4 interlocks with the dead bolt 2 and moves to a predetermined position (see FIG.
Stop at the position indicated by the solid line.

The lock pin 61 of the lock pin device 6 is pushed to move it toward the inside of the frame 1, and the tip of the lock pin 61 is inserted into the engagement hole 40 of the interlocking member 4 and engaged. As a result, the dead bolt 2 and the interlocking member 4 do not move. Even if the dead bolt 2 is moved from the outside with a special tool, the interlocking member 4 is fixed, so that the dead bolts 2 that are interlocked with each other also do not move, and as a result, they cannot be unlocked. Even if a key is used, it cannot be unlocked from the outside. Therefore, it is possible to prevent invasion by picking.

[Second Embodiment] FIG. 5 shows a state in which the lock device according to the second embodiment is incorporated in a door, and the lock pin device of the lock device is operated from outside by a remote controller. It is a schematic explanatory drawing which shows. 6A and 6B are schematic explanatory views of the main parts showing the cross-sectional structures of the interlocking member and the engaging member, of which FIG. 6A shows the unlocked state and FIG. 6B shows the locked state. FIG. 7 is a schematic explanatory view of a main part showing a cross-sectional structure of the interlocking member and the engaging member, and shows a state in which the locking device is manually operated to lock. Further, the same or equivalent portions as those in the first embodiment are designated by the same reference numerals, and the portions shown in the first embodiment will not be described, and the differences will be mainly described. To do.

The lock device A3 is configured such that the lock pin device 6a shown in FIG. 6 can be operated from the outside by a remote-control key (hereinafter referred to as a remote control key R) shown in FIG. The remote control key is also called a wireless key. The remote control key R is an operation switch R that operates the lock pin device 6a to move a lock pin 61a, which will be described later, toward the inside of the frame 1 and stop it.
1 and a release switch R2 for moving the lock pin 61a toward the outside of the frame 1 and stopping it. The remote control key R is used while being carried along with a key K for locking the cylinder lock of the door D, for example. Also, the remote control key R
Can also use an integral key K.

Cylinder lock pedestal 50 provided on door D
A receiver 51 is provided for receiving signals such as infrared rays, radio waves or ultrasonic waves transmitted from the remote control key R.
Each switch R1 of the remote control key R toward the receiving unit 51
When R2 is pressed, a signal is transmitted to the receiver 51, and the lock pin device 6a is activated. Reference numeral 100 indicates a door knob.

Referring to FIG. 6 (a). Lock pin device 6a
Is a base body 60a in which a spring or the like for biasing the lock pin 61a toward the outside of the frame 1 is housed, and a lock pin 6 provided by vertically penetrating the base body 60a in FIG. 6A.
1a. The lock pin device 6a includes a solenoid 82 that electromagnetically advances and retracts the lock pin 61a to fix and release the interlocking member 4. Note that the lock pin 61a can be manually operated from the room, as in the first embodiment. The knob portion of the lock pin 61a is formed of a semicircular plate-shaped body.

The lock pin 61a is a slide rod 824 (also called a plunger) of a solenoid 82 which will be described later.
And an engaging pin 601 fixed to the tip of the slide rod 824.

The solenoid 82 has an electromagnetic coil 822 and a permanent magnet 823 inside a casing 821. The solenoid 82 normally has a slide rod 824 protruding from the inside of the casing 821 to the outside of the frame 1 (upward in FIG. 6A). Slide rod 824
Can move back and forth inward of the frame 1.

The solenoid 82 uses a permanent magnet 823 and can hold the slide rod 824 with the slide rod 824 retracted toward the inside of the frame 1 (adsorption state), and the holding current is unnecessary. Solenoid 82
Are generally called "self-holding solenoids" or "latch solenoids". Since the solenoid 82 employs a known technique, a detailed description of its structure will be omitted.

Then, when the operation switch R1 of the remote control key R is pressed, a DC voltage for operation is applied to the electromagnetic coil 822, and the slide rod 824 moves inside the frame 1 as shown in FIG. 6 (b). Retract in the direction. The retracted state is retained by the attractive force of the permanent magnet 823 even after the current is cut off. When the slide rod 824 retracts to the state of FIG. 6B, the entire lock pin 61a moves toward the inside of the frame 1, and the engagement pin 601 fixed to the tip of the lock pin 61a moves the interlocking member 4
It is inserted into the engaging hole 40 and engaged. As a result, the dead bolt 2 and the interlocking member 4 do not move.

Next, the release switch R2 of the remote control key R
When is pressed, a DC voltage for releasing is applied to the electromagnetic coil 822, and the slide rod 824 returns to the original position shown in FIG. 6A. As a result, the fixing of the interlocking member 4 by the lock pin 61 is released.

The base body 60a has a guide groove 602 cut out in a key shape. This guide groove 60
2, an engaging projection 91 provided at a required position of the lock pin 61a (in the present embodiment, substantially the central portion of the slide rod 824) is slidably positioned.

In the state shown in FIG. 6 (a) in which the lock pin 61a has moved to the outside of the frame 1, the engaging projection 91 is located on the base end side of the guide groove 602 (outside of the frame 1). On the other hand, in the state of FIG. 6B in which the lock pin 61a has moved inward of the frame 1, the engagement protrusion 91 is located at an intermediate corner portion of the guide groove 602 (inside the frame 1).

(Operation) The operation of the lock device A3 will be described with reference to FIGS. The lock device A3 is incorporated into a door D that rotates and opens and closes. Go out of the room and close the door D incorporating the lock device A3. Lock the cylinder with the key K and let the dead bolt 2 project. At this time, the interlocking member 4 interlocks with the dead bolt 2 and stops at a predetermined position (the position shown in FIG. 6B).

By pressing the operation switch R1 of the remote control key R, the lock pin 61a of the lock pin device 6a is moved toward the inside of the frame 1, and the engaging pin 601 is moved to the interlocking member 4.
It is inserted into the engaging hole 40 and engaged. As a result, the dead bolt 2 and the interlocking member 4 do not move. Therefore, it is possible to prevent invasion by picking.

When opening the door D, the release switch R2 of the remote controller is pushed to lock the lock pin 61 of the lock pin device 6.
A is moved to the outside of the frame 1 to release the fixing of the interlocking member 4. Then, unlock the cylinder lock with the key K,
The dead bolt 2 is housed in the door D.

If the receiver 51 is provided on the indoor side of the door D, the lock pin device 6 can be operated from the indoor side by remote control with the remote control key R.

Further, by electrically interlocking the movement of the deadbolt 2 and the movement of the lock pin device 6a, the deadbolt 2 can be locked and the deadbolt 2 can be locked by the lockpin device 6a by one operation of the remote control key R. Can be fixed at the same time.

Further, in this embodiment, the operation switch R1 and the release switch R2 are separately provided on the remote control key R for operation, but the lock pin device 6a can be operated and released by the same switch. It can also be configured as follows. In this embodiment, the solenoid is used to actuate the lock pin device 6a, but other power means such as a motor may be used.

The lock pin 61a can also be operated from the inside of the room as follows. As shown in FIG. 7, against the urging force of the spring housed in the base body 60a, the lock pin 61a is manually pushed and rotated from the room to fix the engagement protrusion 91 to the tip portion of the guide groove 602. To do. In this way, the lock pin 61a cannot be moved to the outside of the frame 1 regardless of the operation of the remote control key R. Therefore, if the lock pin 61a is manually operated and fixed as described above while at home, for example, the lock pin 61a is operated by the stolen remote control key R or by an intruder who can decode the signal of the remote control key R. There is no need to worry about opening the door by releasing the device 6a.

[Third Embodiment] FIG. 8 is a perspective view showing a third embodiment of the locking device according to the present invention, and FIG. 9 shows the structure of the interlocking member and the engaging member, and the essential parts in the unlocked state. Side view explanatory diagram,
FIG. 10 shows the structure of the interlocking member and the engaging member, and is a side view explanatory view of the main parts in a state where the engaging member is engaged with the engaging hole of the interlocking member in the locked state.

The lock device A2 according to this embodiment is of a type provided on a sliding door. The lock device A2 has a lock seat 8. The lock seat 8 is provided with an interlocking member 7 that slides in the vertical direction. The interlocking member 7 and the lock member (not shown) of the locking device A2 are interlocked with each other. When the knob 70 of the interlocking member 7 is located in the middle of the window, the interlocking member 7 is in the unlocked state. The structure is such that when 70 is lowered, it is locked. An engagement hole 71 is provided near the lower end of the interlocking member 7.

A lock pin device 6 having the same structure as the lock pin device 6 of the lock device A1 is provided below the lock seat 8. When the lock pin 61 of the lock pin device 6 is located outside and in the unlocked state, the interlocking member 7 can be moved up and down. When the interlocking member 7 is lowered and moved to the locking position, the lock pin 61 is pushed to move inward, so that the tip end of the lock pin 61 is inserted into the engaging hole 71 of the interlocking member 7 and the interlocking member 7 is moved. Is fixed.

(Operation) The operation of the lock device A2 will be described with reference to FIGS. The lock device A2 is incorporated in the inner door 9a on the indoor side of the sliding door. The sliding door is composed of an inner door 9a and an outer door 9b.

As shown in FIGS. 8 and 9, from the state in which the sliding door is closed and unlocked, the knob 70 of the interlocking member 7 is lowered and locked. Then, by pushing the lock pin 61 of the lock pin device 6, the lock pin 6 is inserted into the engagement hole 71 of the interlocking member 7.
The distal end portion of 1 is engaged and the interlocking member 7 is fixed. As a result, the interlocking member 7 does not move in the unlocking direction (upward), and thus unlocking from the outside can be prevented. The other operations are almost the same as those of the lock device A1, and thus the description thereof is omitted. In addition, the lock device A3 described in the second embodiment
Similarly, the lock pin device 6 can be operated by a remote controller.

The terms and expressions used in the present specification are for the purpose of explanation only and are not limiting, and the terms and expressions equivalent to the above terms and expressions are not excluded. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the technical idea.

[0051]

According to the lock device and the unlocking prevention method in the lock device according to the present invention, the locking member or the interlocking member interlocking with the lock member at the locking position can be fixed by the fixing means. Accordingly, for example, even if the lock member is moved from the outside with a special tool without using a key, the lock member or the interlocking member is fixed, and consequently the lock cannot be unlocked. In addition,
Even if a key is used, it cannot be unlocked from the outside, but since the fixing means is operated by a person from inside the room, when the family member returns home, contact the person inside the room. Well, there is no problem. Furthermore, if the locking device according to the present invention is attached to all the doors, it is possible to prevent intrusion by picking at home, which is safe. Moreover, since the structure of the device for preventing picking is simple, it is not necessary to make a fundamental design change, and the device can be manufactured at low cost.
Further, in the structure in which the lock member or the interlocking member that interlocks with the lock member can be fixed from the outside of the room, the lock member in the locking position or the interlocking member in the predetermined position described above can be moved out by remote operation or the like. Sometimes it can be fixed from outside. Therefore, even when the user is out, it is possible to prevent invasion by picking.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a lock device according to the present invention.

FIG. 2 is a side view of the locking device shown in FIG. 1 in which a lid body is partially cut away and a locking member is projected to be in a locked state.

FIG. 3 is a cross-sectional explanatory view of the essential parts in the unlocked state, showing the structures of the interlocking member and the engaging member.

FIG. 4 is a cross-sectional explanatory view of essential parts showing a structure of an interlocking member and an engaging member, showing a state in which the engaging member is engaged with an engaging hole of the interlocking member in a locked state.

FIG. 5 is a schematic explanatory view showing a state in which the lock device according to the second embodiment is incorporated in a door, and a state in which a lock pin device of the lock device is operated from the outside by a remote controller.

6A and 6B are schematic explanatory views of main parts showing cross-sectional structures of an interlocking member and an engaging member, in which FIG. 6A shows an unlocked state and FIG. 6B shows a locked state.

FIG. 7 is a schematic explanatory view of a main part showing a cross-sectional structure of an interlocking member and an engaging member, showing a state in which a lock device is manually operated to be locked.

FIG. 8 is a perspective view showing another embodiment of the lock device according to the present invention.

FIG. 9 is an explanatory side view of the main parts in the unlocked state, showing the structures of the interlocking member and the engaging member.

FIG. 10 is a side view explanatory view of a main part showing a structure of an interlocking member and an engaging member, in a state where the engaging member is engaged with an engaging hole of the interlocking member in a locked state.

[Explanation of symbols]

A1 lock member 1 frame 11 lid 10 lock face plates 2 dead bolt 3 Latch bolt 5 cylinders 20 slider 4 interlocking member 40 engagement hole 6 Lock pin device 60 base 61 lock pin A3 lock device D door K key R remote control key R1 operation switch R2 release switch 50 cylinder lock pedestal 51 Receiver 60a base 6a Lock pin device 61a lock pin 601 engagement pin 602 guide groove 82 solenoid 821 casing 822 electromagnetic coil 823 permanent magnet 824 slide rod 91 Engagement protrusion 100 door knob A2 lock device 7 interlocking member 70 control 71 Engagement hole 8 lock seat 9a Uchito 9b exterior door

Claims (6)

[Claims] 1. A lock device having a structure in which a lock member is interlocked to prevent a door or window from opening by operating a key inserted in a keyhole, wherein the lock device is built in the door or window. In addition, the locking device operates the mechanism unit by inserting the unlocking means into the keyhole, and the locking member in the locked state moves to the unlocking side in conjunction with the movement of the mechanism unit. A lock member fixing device is provided to prevent the movement of the mechanism part, one end of which is configured to operate the mechanism part, and the other end of which is exposed to the indoor side of the door. A locking device characterized in that it can be controlled. 2. When the locking member moves and is locked, the fixing member is provided for fixing the locking member or the interlocking member interlocking with the locking member, and fixing the locking member or the interlocking member in the locking state. The locking device is characterized in that it cannot be unlocked from the outside when it is done. 3. An interlocking member which interlocks with a lock member and has an engaging portion, and which engages with the interlocking member of the interlocking member to fix the interlocking member when the lock member moves to a locked state. The locking device is characterized in that it is configured so that it cannot be unlocked from the outside when the interlocking member is fixed in a locked state. 4. The lock device according to claim 1, further comprising means for fixing the lock member or the interlocking member interlocking with the lock member from outside the room. 5. The lock device according to claim 1, further comprising a means capable of remotely fixing the lock member or the interlocking member interlocking with the lock member by remote control. 6. A locking device, characterized in that, when the locking member moves and is locked, the locking member or the interlocking member interlocking with the locking member is fixed so that it cannot be unlocked from the outside. Unlocking prevention method in.