JP2003328616A - Lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the movement of a lock bolt by constraining a slide movement itself for the lock bolt, and to ensure the prevention of a malfeasant unlocking by a picking. <P>SOLUTION: In a lock device in which the lock bolt 10 projected and retracted to and from a lock box by the locking-unlocking rotary operation of a cylinder lock is installed in the lock box 3 mounted on a door and a locking means fixing the lock bolt 10 in the case of a locking is secured, the locking means fixing the lock bolt is composed of a stopper member 80 preventing the movement of a lock member, and the rotation of a cam enabling an unlocking is controlled. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device installed on a door, and more particularly to a lock device for preventing unauthorized unlocking such as picking by enhancing a locking effect.

[0002]

2. Description of the Related Art As a conventionally known locking device,
In general, the lock bolt 10 can be retracted from the lock box 3 as the cylinder lock rotates, and the lock bolt 10 is engaged / disengaged with the seat of the door frame to lock / unlock.

[0003]

However, in this lock device, the lock bolt 10 is locked inside the lock box 3 only by inserting the picking tool into the key hole of the key cylinder and rotating the cam 7 accompanying the rotation of the cylinder lock. However, there is a problem in that it is easy to be illegally unlocked because the user suddenly immerses himself in.

In addition, the conventional locking device has a lock bolt 10
Since there is no means for restraining itself, the lock bolt 10
Since it is easy to move the lock into and out of the lock box 3, it is easy to open the lock from the outside by using a regular key, not to mention unauthorized unlocking.

In view of such circumstances, it is an object of the present invention to provide a locking device that is less likely to be unlocked illegally by picking.

[0006]

More specifically, the present invention provides the following.

(1) Inside the lock box provided on the door, there is provided a lock bolt which is retracted from the lock box by locking / unlocking rotation of a cylinder lock, and lock means for fixing the lock bolt at the time of locking is provided. A locking device characterized by the above.

(2) A lock bolt having a plurality of engaged parts, which is retracted from the lock box by locking / unlocking rotation of a cylinder lock, inside the lock box provided on the door, and the length of the lock bolt. A lock member having a cam passive portion that is movable in a direction substantially orthogonal to the direction; and a cam that rotates in conjunction with a locking / unlocking rotation operation of the cylinder lock, wherein the rotated cam locks the lock. The lock bolt is slidably moved by engaging the cam passive portion of the member to move the lock member, and engaging the cam with the engaged portion of the lock bolt against the lock member. A locking device configured as described above, characterized in that a locking means for fixing the lock bolt at the time of locking is provided.

According to the present invention, the locking device for fixing the lock bolt itself is provided in the locking device, and the sliding movement of the lock bolt is restricted by making the locking device function, so that the unlocking is performed. It is possible to regulate the rotation of the cam that is possible.

That is, the lock bolt is slidably moved by utilizing the engagement of the cam with the engaged portion of the lock bolt, and the engagement of the lock bolt with the engaged portion is caused by the cam resisting the lock member. By measuring the
Although it is possible to move the lock bolt in the unlocking direction, the locking means according to the present invention prevents the lock member or the lock bolt from moving, so that the sliding movement of the lock bolt is restrained. The rotation of the cam that enables locking can be restricted.

Therefore, since the movement of the lock bolt is blocked even if an attempt is made to illegally unlock by a picking tool or the like, the illegal unlocking by picking can be surely prevented.

(3) The locking means is characterized in that the locking means moves from a non-moving area to a moving area to prevent movement of the locking member (1) or (2).
The lock device described in 1.

According to the present invention, the locking means, which is normally located in the non-moving region of the locking member, is set so as to prevent the locking member from moving in order to fix the locking bolt. Even if an attempt is made to unlock the lock bolt, the movement of the lock bolt is blocked, so that the unauthorized unlocking due to the picking is surely prevented.

Here, the "non-moving region" refers to a region outside the moving range of the lock member in the lock member which is movable in the direction substantially orthogonal to the longitudinal direction of the lock bolt. On the other hand, the “moving area” means an area within the moving range of the lock member.

(4) The lock bolt has a plurality of cutouts on the side facing the engaged portion, and the locking means extends in a direction substantially orthogonal to the longitudinal direction of the lock bolt. The lock device according to (1) or (2), which slides to engage with the cutout portion of the lock bolt to prevent the lock bolt from sliding.

According to the present invention, the lock bolt has a plurality of notches on one side surface thereof, particularly on the opposite side having the engaged portion, and the lock bolt has a longitudinal direction so as to engage with the notches. Locking means that slides in a direction substantially orthogonal to the lock bolt is provided, and the locking means that engages with the cutout portion of the lock bolt can prevent the lock bolt from sliding, so it is possible to prevent unauthorized unlocking due to picking. Will be things.

(5) The lock means is a pin member that is movable in the thickness direction of the lock bolt, and the pin member is inserted into a recess provided in the lock bolt to The locking device according to (1) or (2), characterized in that it prevents sliding movement.

According to the present invention, the lock device is provided with a pin member movable in the thickness direction of the lock bolt, in other words, in the thickness direction of the lock device, and the pin member is provided on the lock bolt. By being inserted into the recess, the pin member inserted into the recess of the lock bolt blocks the sliding movement of the lock bolt, so that the unauthorized unlocking due to the picking is surely prevented.

(6) The lock device according to any one of (1) to (5), wherein the lock means is operated by a portable remote control device.

According to the present invention, the locking means can be operated from the outside of the room, and it is possible to reliably prevent unauthorized unlocking due to picking while going out.

That is, the above-mentioned lock devices (1) to (5) are intended to reliably prevent unauthorized unlocking such as picking at home, mainly for the purpose of operating the locking means from the indoor side. According to the present invention (6)
The lock device of (1) can reliably prevent unauthorized unlocking due to picking by activating the locking means even from the outdoor side. Also, even if you try to unlock from the outdoor side using a regular key, the lock means is operating, so even if you use a regular key, when you go out,
It is possible to prevent the risk of being unlocked without permission.

Of course, the locking means can be operated from the indoor side by a portable remote control device.

(7) The lock means is operated at a stage in which the lock bolt protrudes from the lock box by a predetermined number of steps, wherein the lock means is operated. apparatus.

According to the present invention, in the lock device constructed such that the rotation of the cylinder lock is made stepwise and the lock bolt is gradually moved in and out in association with the cylinder lock. Since the locking means automatically operates in a state where the locking means is projected by a predetermined number of steps, that is, in the locked state, it is possible to save the trouble of operating the locking means.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 of the present invention will be described below with reference to the drawings.

FIG. 1 shows a lock device A according to an embodiment of the present invention. In the figure, reference numeral 1 is a door, 2 is a door frame, and 2a is a seat into which the lock bolt 10 and the latch bolt 20 are fitted. The lock bolt 1 is attached to the seat 2a.
A lock hole 2a1 with which 0 is engaged and a lock hole 2a2 with which the latch bolt 20 is engaged are provided. Reference numeral 3 is a bottomed lock box, and the peripheral wall 3a and the bottom wall 3b are formed by sheet metal bending. And the boss 3d planted in the bottom wall 3b
The lid 3c is fixed with a screw 4 to close the opening of the lock box 3 (see FIG. 3).

FIG. 2 shows a state in which the lock device A is attached to the door 1.

The lock box 3 is attached to the inside of the door 1, and the cylinder lock 30 shown in FIG. 5 is attached to the outside of the door 1. Since the tip of the connecting rod 31 of the cylinder lock 30 is inserted into the hole 9 of the cam mechanism rotatably provided on the lid body 3c, when the key is inserted into the key hole 32 and rotated, the connecting rod 31 is released. Rotate the cam 8 (see FIG. 4). On the other hand, as shown in FIG. 6, another cylinder lock 5 is provided on the surface of the lock box 3 (that is, on the indoor side). The rotary shaft 6 of the cylinder lock 5 penetrates the bottom wall 3b of the lock box 3 and faces the lock box 3, and a cam member 7 is fixed to the tip of the rotary shaft 6. That is, when the key is inserted into the key hole 5a of the cylinder lock 5 and rotated, the cam member 7 rotates.

Next, the latch mechanism R for retracting the lock bolt 10 from the lock box 3 with the rotation of the cylinder locks 5 and 30 will be described. The latch mechanism R includes the cam 7, the lock member 40, the lock bolt 10, and the lock claw 4.
4, a mechanism including notches 14 to 17, a spring 43, and the like.

Both ends of the lock bolt 10 are inserted into the holes of the lock box peripheral wall 3a so that the lock bolt 10 can be slid horizontally in the lock box 3. Notches 14 to 17 are formed on the upper end surface of the lock bolt 10 at equal intervals in the longitudinal direction, while engaged parts 11 to 13 as cam passive portions are arranged on the lower end surface of the lock bolt 10 at equal intervals. Is formed by. It should be noted that the lock bolt 10 has a pin 47 for restricting its moving stroke to prevent the lock bolt 10 from falling out of the lock box 3, and a lever 2
The pin 48 which restricts the rotation stroke of 2 is planted.

The lock member 40 has a U-shaped cross section, and the lock bolt 10 is inserted between both side walls 45-45 of the lock member 40. The lock member 40 is slidable in the vertical direction by engaging the cutouts 41-41 with the boss 3d.

At the tip of the connecting wall 46 of the lock member 40,
A lock pawl 44 as an engaging portion is formed, and a cam passive portion 42 is formed at the lower edges of both side walls 45-45. As will be described later, the cam passive portion 42 includes bent portions 7a, 8 of the cams 7, 8 that interlock with the cylinder locks 5, 30.
a will be engaged. Connecting wall 46 of locking member 40
A spring 43 as a biasing means is arranged between the lock box 3 and the peripheral wall 3a of the lock box 3. Therefore, the lock member 40 is biased toward the cam 7 by the spring 43, and normally,
The inner surface of the connecting wall 46 is pressed against the lock bolt 10 so that the lock claw 44 is engaged with the notches 14 to 17 of the lock bolt 10.

Next, a mechanism for retracting the latch bolt 20 from the lock box 3 will be described.

The latch bolt 20 is provided with an operating rod 20a,
A slit 24 extending in the longitudinal direction is formed in the flat plate portion 20b provided in the central portion. The slit 24 is engaged with the other end of the lever 22, one end of which is pivotally connected to the lock bolt 10 by a pin 23. This lever 22
Has a pair of tongue pieces 22a and 22c at one end, and a bent piece 22b at the other end for preventing the tongue piece 22c from falling off from the slit 24.

The operating rod 20a is inserted at its tip into a bracket 25 planted in the bottom wall 3b of the lock box 3, and a stopper 61 is fixed thereto by a pin 26. This pin 26
Extends from the stopper 61 to the bottom wall 3b side of the lock box 3 and is connected to the slide knob 60 of FIG. Operating rod 2
A spring 21 is interposed between the flat plate portion 20b of 0a and the bracket 25, and the operating rod 20a has a spring 21a.
Thus, the stopper 61 is normally pressed against the bracket 25 and the latch bolt 20 is projected from the peripheral wall 3a of the lock box 3 by being urged to the left in the figure.

The lock device A is also provided with a lock mechanism for fixing the latch bolt 20.

That is, the bottom wall 3b of the lock box 3 is shown in FIG.
A lock slider 51 is attached so as to be vertically slidable as shown in FIG. The figure shows the lock bolt 1
A part of 0 is cut out to show the lifting mechanism of the lock slider 51. The lock slider 51 is provided with a vertically extending long hole 53, and this long hole 53 is engaged with a boss 54 planted in the lock box bottom wall 3b. Further, the torsion coil spring 52 is passed through the boss 54, and both ends thereof are engaged with the cut-and-raised pieces 55-55 of the lock slider 51.

A cam groove 56 is formed in the lock slider 51, a shaft 50a of the rotary knob 50 shown in FIG. 6 is passed through the cam groove 56, and a rotary member 57 is fixedly provided at the tip thereof. The rotating member 57 has a pin 58, which is engaged with the cam groove 56. Therefore, when the rotating member 57 is at the position shown in FIG. 1, the lock slider 51 is biased upward by the torsion coil spring 52 to press the bent peripheral edge of the cam groove 56 against the shaft 50a of the rotating knob 50.

Now, when the rotary knob 50 is rotated clockwise, the pin 58 moves upward in the cam groove 56 and lowers the lock slider 51 as the rotary member 57 rotates in the arrow B direction. . The pin 58 is shown in FIG.
When it reaches the bent portion of the cam groove 56 as shown by 0, the lock slider 51 is fixed by the locking means (not shown). At this time, the tongue piece 51a at the lower end of the lock slider 51 faces the sliding area of the pin 26, and blocks the movement of the operating rod 20a of the lock bolt 20 as described later.

Next, the locking / unlocking operation by the locking device A will be described. In the following, in the locked state of FIG. 1, a case where the cylinder lock 5 on the indoor side is operated to unlock will be described.
Even when unlocking by the operation of, the cam 8 is used instead of the cam 7.
Is the same as the basic operation except that it engages with the cam passive portion 42 of the lock member 40.

When the cylinder lock 5 is rotated counterclockwise in the locked state of FIG. 1 (FIG. 8A), the bent portion 7a of the cam 7 is engaged with the cam passive portion 42 of the lock member 40. (FIG. 8 (B)), the lock member 40 is pushed up against the biasing force of the spring 43, and the lock claw 44 is disengaged from the notch 17 of the lock bolt 10 (see FIG. 7).
When the cam 7 further rotates, the bent portion 7a engages with the engaged portion 13 of the lock bolt 10 to slide the lock bolt 10 leftward in the drawing.

When the lock bolt 10 slides by the pitch of the cutout portion 17, the bent portion 7a of the cam 7 passes through the apex P of the cam passive portion 42 (FIG. 8C), and the lock member 40.
Starts to descend, and eventually the lock claw 44 engages with the adjacent notch 16 (FIG. 8 (D)). That is, when the cylinder lock 5 is rotated once, the lock bolt 10 slides by the pitches of the notches 14 to 17. In this way, each time the cylinder lock 5 is rotated once, the lock bolt 10 is gradually retracted into the lock box 3. When the cylinder lock 5 is rotated three times in total, the lock bolt 10 is completely immersed in the lock box 3 as shown in FIG. 9, and the unlocking operation is completed. The same operation is performed in the case of locking.

As the lock bolt 10 slides in this way, the lever 22 rotates clockwise about the pin 23 as a fulcrum, and the tongue piece 22a abuts on the pin 48 when unlocking as shown in FIG. 9 (A). I am in contact. In this state, when the cylinder lock 5 is rotated about a half counterclockwise, the cam member 7
The bent portion 7a of the lever engages with the tongue piece 22c of the lever 22 to rotate the lever 22 counterclockwise (see FIG. 9 (B)), and the latch bolt 20 moves to the left in the figure to lock the lock box. Immerse in 3. That is, the latch bolt 20 separates from the seat 2a,
The door 1 is opened. When the latch bolt 20 is detached from the seat 2a, the slide knob 60 of FIG. 6 may be operated instead of the cylinder lock 5.

By the way, as shown in FIG.
If 0 is operated and the lock slider 51 is lowered, even if the cylinder lock 5 or the slide knob 60 is operated,
Since the pin 26 is locked by the tongue piece 51a of the lock slider 51, the movement of the latch bolt 20 is prevented,
It cannot be separated from the seat 2a.

This lock device A is provided with a lock means for fixing the lock bolt 10 by an operation from the indoor side when locking.

The first form of this locking means is constituted by a stopper member 80 shown in FIG. 10, and the locking mechanism thereof is such that the stopper member 80 is moved horizontally above the lock bolt 10 by a guide means (not shown). It is configured to slide to. The stopper member 80 moves from the non-moving region of the lock member 40 to the moving region to prevent the lock member 40 from moving.

In this first lock mechanism, a window 81 is formed on the surface of the lock box 3, and the slide knob 82 of the stopper member 80 is exposed from this window (see FIG. 6). further,
The boss 83 is planted on the peripheral wall 3a of the lock box 3 to secure the spring 84.
And a pin 85 (see FIG. 11). That is, the pin 85 is urged by the spring 84 and the stopper member 8
The stopper member 80 is held in the non-moving region and the moving region of the lock member 40 by engaging with the recess portion 86 of 0. It should be noted that at the position where the slide knob 82 comes into contact with the front and rear edges of the window 81 and is locked, the pin 85 is engaged with the stopper member 80.
To be respectively engaged with the concave portions 86 of the.

If the stopper member 80 is arranged in the non-moving region of the lock member 40 shown in FIG. 1, the lock bolt 10 can be projected and retracted as described above.
When it is moved to the movement region of the lock member 40 shown in
The upward movement of the locking member 40 is prevented, and the locking claw 44
Cannot be removed from the recess 17 of the lock bolt 10.
That is, unlocking with the cylinder locks 5 and 30 becomes impossible.

Since this lock device A is constructed as described above, the linder lock 30 must be rotated in three steps before unlocking. Therefore, the time required for unlocking becomes long, and it becomes difficult for unauthorized unlocking by picking. In general, a person who tries to unlock by picking has the belief that the cylinder lock 30 can be unlocked by rotating the cylinder lock 30 a little. Therefore, if the lock cannot be unlocked by the first rotation operation, the lock itself is broken. Thinking about it, I will give up unlocking halfway. Further, even when the unlocking is continued, the time required for unlocking becomes longer than that of the conventional one, so that the unauthorized unlocking action is easily detected.

Further, since the lock means for fixing the lock bolt 10 in the protruding state is provided, even if another person obtains a legitimate key due to loss or the like, it is possible to prevent the key from unlocking, which is safe. Is extremely high.

Further, since the cam 8 pulls the lock member 40 away from the lock bolt 10 against the urging force of the pulling 43, a torque to overcome the urging force of the spring 43 must be applied to the cam 8. The rotation of the cylinder lock 30 becomes heavy, and the effect of preventing unauthorized unlocking is further enhanced.

[0052]

Second Embodiment of the Invention In the above first embodiment, the lock bolt 10 is fixed by blocking the movement of the lock member 40 by the stopper member 80. However, the lock bolt 10 is fixed as follows. You may make it the structure fixed directly.

The locking means of FIG. 12 is a lock bolt 10
The stopper member 87 is engaged with the notches 14 to 17. The stopper member 87 is configured to be slidable up and down by a guide means (not shown), and is attracted and held by the magnet 88 above the lock bolt 10.

A window 89 is formed on the surface of the lock box 3,
From here, the slide knob 90 of the stopper member 87 is exposed (see FIG. 13). When the slide knob 90 is pushed down and the stopper member 87 is separated from the magnet 88, the stopper member 87 causes the recess 15 of the lock bolt 10 to move.
And the lock bolt 10 is fixed.

[0055]

Embodiment 3 Alternatively, as shown in FIG. 14, a screw hole 91 is formed in the bottom wall 3b of the lock box 3 and a screw portion 93 is formed in the shaft 92a of the rotary knob 92, and this screw portion 93 is formed. May be screwed into the screw hole 91, and the tip end thereof may be engaged with the recess 92 of the lock bolt 10.

[0056]

[Fourth Embodiment of the Invention] The locking means of FIG. 15 is designed to operate in conjunction with the locking mechanism of the latch bolt 20.

This locking means is slidably supported by the recess 94 provided in the lock bolt 10 and the bracket 95 fixedly mounted on the lock box 3, and is disposed between the lock bolt 10 and the lock slider 51. A pin member 96, a spring 97 for urging the pin member 96 toward the lock slider 51, and a cam 98 provided on the lock slider 51 for engaging the pin member 96 with the recess 94 of the lock bolt 10. is there. Now, when rotating the rotary knob 50 to lower the lock slider 51, the pin member 9
One end of 6 rides on the cam 98, and the other end of the pin member 96 engages with the recess 94 of the lock bolt 10.

[0058]

Fifth Embodiment of the Invention Next, a lock device A in which the locking means can be operated / released mainly from the outdoor side by a portable remote control device will be described.
In addition, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

FIG. 16 is a block diagram showing the control system of the lock device A.

The remote control device 100 includes switches 101 and 102 for activating and releasing the lock means,
A memory unit 103 that stores an ID code, a control unit 104 that generates a transmission signal that includes the output signals of the operation / release switches 101 and 102 and an ID code, and a transmission that modulates the transmission signal from the control unit 104 and wirelessly transmits it. And a part 105.

On the other hand, the lock device A receives the wireless signal from the remote control device 100 and demodulates it by the receiving unit 10.
6, an auto-lock detection sensor 107 for detecting the protruding state of the lock bolt 10, a means 108 for detecting the voltage of the battery that supplies power to the electromagnetic actuator 110, and an ID.
A memory unit 109 that stores a code and the above-mentioned means 106
Electromagnetic actuator 11 based on signals from
The control unit 111 controls 0.

As the automatic lock detection sensor 107, for example, an operation transformer that moves the core in conjunction with the lock bolt 10 is used. When the auto lock sensor 107 detects the three-step locked state (the locked state where the lock bolt 10 shown in FIG. 1 is most protruded), the control means 111 operates the electromagnetic actuator 110 to fix the lock bolt 10. Is done. Also, the control means 1
11 indicates that when the voltage of the battery is lower than a predetermined value, the electromagnetic actuator 110 does not operate even if the operation switch 101 of the remote control device 100 is operated.

Output rod 1 of electromagnetic actuator 110
10a is connected to a stopper member 80 as shown in FIG. The electromagnetic actuator 110 alternately changes the direction of the energizing current of the solenoid so that the output rod 1
10a alternately repeats forward and backward movements. That is, when switching the state of the output rod 110a, it is sufficient to energize the solenoid for a short time.
There is no hindrance to the movement of the stopper member 80 by the manual operation of 2.

According to this lock device A, when the operation switch 101 or the release switch 102 of the remote control device 100 is operated, these switches 101, 102
Output signal is sent to the control unit 104. The control unit 104 generates a transmission signal in which the ID code stored in the memory unit 103 is added to this signal, and sends the transmission signal to the transmission unit 105. The transmitter 105 modulates this transmission signal and wirelessly transmits it to the lock device A.

The receiving unit 106 of the lock device A receives and demodulates a radio signal from the remote control device 100. The demodulated signal is sent to the control unit 111, the ID code included in this signal is compared with the ID code stored in the memory unit 109, and if they match,
The control unit 111 sends an operation or release command to the electromagnetic actuator 11, but if they do not match, no command is sent. Based on this command, the electromagnetic actuator 11 slides the stopper member 80 to operate or release the locking means.

With this arrangement, the locking means can be operated from the outside of the room by the remote control device 100, so that it is possible to reliably prevent unauthorized unlocking due to picking while going out.

By the way, when the cylinder locks 5 and 30 are locked in three stages, the locking means is automatically operated, so that the remote control device 100 does not need to be operated.

When the voltage of the battery becomes lower than the predetermined value, the electromagnetic actuator 110 is operated even if the operation switch 101 of the remote control device 100 is operated.
Does not operate, there is no possibility that the operating state of the locking means cannot be released due to exhaustion of the battery.

The remote control device 100 and the lock device A are provided with red and green lamps respectively, and when the remote control device 100 is operated when the voltage of the battery is lower than a predetermined value, the red lamp is given a predetermined light. While blinking for a time to notify that the lock means has not been activated, when the voltage of the battery is equal to or higher than a predetermined value, the green lamp is blinked for a predetermined time to notify that the lock means has been activated. You may

Although the lock device A of the above embodiment is provided with the indoor and outdoor cylinder locks 5 and 30,
This requires unlocking of the cylinder lock 5 on the indoor side when the intruder leaves the house, in consideration of the case where the intruder takes out household property from a window other than the door. Therefore, it goes without saying that the present invention can be applied to a normal lock device having a thumb turn on the indoor side.

[0071]

According to the present invention, since the cylinder lock has to be rotated in a plurality of steps when unlocking, the time required for unlocking becomes long and illegal unlocking by picking is less likely to occur.

Further, since the lock means for fixing the lock bolt from the inside of the room at the time of locking is provided, even if another person obtains a legitimate key due to loss or the like, it is possible to prevent the key from unlocking, and it is safe. Extremely high.

[Brief description of drawings]

FIG. 1 is a diagram showing a latch mechanism of a lock device according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which the lock device of FIG. 1 is attached to a door.

FIG. 3 is a view of the lock device according to the embodiment of the present invention viewed from the lid side.

FIG. 4 is a view of the lid body of FIG. 3 viewed from the back side.

5A is a front view of the cylinder lock, and FIG. 5B is a side view of the cylinder lock.

FIG. 6 is a view of the lock device according to the embodiment of the present invention viewed from the front side.

FIG. 7 is a diagram showing a state in which the cam of the lock device according to the embodiment of the present invention lifts the lock means.

FIG. 8 is a diagram illustrating an unlocking operation of the lock device according to the embodiment of the present invention.

FIG. 9A is a diagram showing an unlocked state of the lock device, and FIG. 9B
FIG. 6 is a view showing a retracted state of a latch bolt.

FIG. 10 is a view showing a locked state of the latch bolt of the lock device according to the embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a locking mechanism of a stopper member that constitutes the locking means of the locking device according to the embodiment of the present invention.

FIG. 12 is a view showing a modified example of the lock means of the lock device according to the embodiment of the present invention.

13 is a view of the lock device of FIG. 12 viewed from the front side.

FIG. 14 is a cross-sectional view showing a modified example of the locking means of the locking device according to the embodiment of the present invention.

FIG. 15 is a cross-sectional view showing a modified example of the lock means of the lock device according to the embodiment of the present invention.

FIG. 16 is a block diagram showing a control system for a lock device according to another embodiment of the present invention.

FIG. 17 is a cross-sectional view showing a drive mechanism for a stopper member of the locking device according to the embodiment of the present invention.

[Explanation of symbols]

1 door 2a seat 3 lock boxes 3a Perimeter wall 3b bottom wall 3d boss 5,30 cylinder lock 6 rotation axes 7,8 cam 10 Rock bolt 11-13 Engagement part 14-17 Notch 20 Latch bolt 20a operating rod 21,43,84 springs 22 lever 23, 26, 54, 58, 85 pins 24 slits 31 connecting rod 40 Lock member 41 Notch 42 Cam passive part 44 Lock claw 45 Side wall 46 connecting wall 50 rotary knob 50a rotating shaft 51 lock slider 51a tongue 52 Torsion coil spring 53 long hole 56 Cam groove 57 Rotating member 80 Stopper member 81 windows 82 Slide knob 83 Boss 86 recess 100 remote control device A lock device R latch mechanism

Claims (7)

[Claims] 1. A lock box provided on a door is provided with a lock bolt that is retracted from the lock box by a lock / unlock rotation operation of a cylinder lock, and lock means for fixing the lock bolt at the time of locking is provided. Locking device. 2. A lock bolt having a plurality of engaged parts, which is retracted from the lock box by a locking / unlocking rotation operation of a cylinder lock, inside a lock box provided on a door, and a longitudinal direction of the lock bolt. A lock member having a cam passive portion that is movable in a direction substantially orthogonal to the lock member; and a cam that rotates in association with a locking / unlocking rotation operation of the cylinder lock, wherein the rotated cam is the lock member. To slide the lock bolt by engaging the cam passive portion and moving the lock member, and engaging the cam with the engaged portion of the lock bolt against the lock member. The locking device configured as described above, further comprising a locking means for fixing the lock bolt when locking. 3. The lock device according to claim 1, wherein the locking means moves the locking means from a non-moving area to a moving area to prevent movement of the locking member. 4. The lock bolt has a plurality of cutouts on the side facing the engaged portion, and the locking means slides in a direction substantially orthogonal to the longitudinal direction of the lock bolt. The lock device according to claim 1 or 2, wherein the lock device moves and engages with the cutout portion of the lock bolt to prevent sliding movement of the lock bolt. 5. The lock means is a pin member that is movable in the thickness direction of the lock bolt, and the pin member is inserted into a recess provided in the lock bolt to slide the lock bolt. The locking device according to claim 1 or 2, which blocks movement. 6. The lock device according to claim 1, wherein the lock means is operated by a portable remote control device. 7. The lock device according to claim 1, wherein the lock means is activated when the lock bolt protrudes from the lock box by a predetermined number of steps.