JP6881832B2 - Locking / unlocking device for doors - Google Patents

Description

The present invention relates to a locking / unlocking device for a door in which a hub is rotated by a manually operated member or an electric mechanism to advance / retract the dead bolt. In particular, in order to prevent unlocking due to fraudulent activity, the dead bolt is prevented from being inadvertently ejected. It is characterized by being provided with a stopper member.

A locking / unlocking device for a door that prevents the deadbolt from moving out due to fraudulent activity is known as shown in FIG.
In this locking / unlocking device, the stoppers 11a and 11b move up and down the dead bolt 10 to the rear side of the dead bolt 10 by the spring force of the coil springs 12a and 12b to prevent the dead bolt 10 from retreating from the advanced position. ..

Specifically, when the rack gear 115 is interlocked by the gear 14 electrically driven by the motor 13, the sliding body 16 moves, and the dead bolt 10 is interlocked with the sliding body 16 from the lock box 17. Advance and move to the locked position.
When the dead bolt 10 passes through the positions of the stoppers 11a and 11b, the stoppers 11a and 11b descend the slopes 16a and 16b of the sliding body 16 by the spring force and move to the rear side of the dead bolt 10.

Further, when the motor 13 is reversed and the dead bolt 10 is retracted toward the unlocked position, the stoppers 11a and 11b climb up the slopes 16a and 16b of the sliding body 16 and separate from the rear portion of the dead bolt 10 as shown in the figure. ..
Even if the gear 14 is manually operated by manually operating the cylinder lock or thumb turn, the dead bolt 10 can be moved forward and backward in the same manner as described above.
When manually operating, the clutch plate 18 is released and the clutch is disengaged.

As a result, when the dead bolt 10 is in the locked position, even if the dead bolt 10 is retracted by using a tool or the like, the dead bolt 10 abuts on the stoppers 11a and 11b, so that the retracting movement of the dead bolt 10 is prevented. , The unlocking of the door due to fraudulent activity is prevented.

Special fair No. 5-9596

In the above-mentioned conventional locking / unlocking device, since the dead bolt 10 advanced to the locking position is supported by the stoppers 11a and 11b, the dead bolt 10 is not moved out and moved by fraudulent activity to be unlocked. Even when the user intentionally performs the unlocking operation, the stoppers 11a and 11b climb the slopes 16a and 16b of the sliding body 16 and slide backward to move backward, so that the unlocking operation becomes heavy and the stoppers 11a and 11b There is a problem that the operability is not always preferable because the 11b may be caught on the slopes 16a and 16b.

Therefore, an object of the present invention is to provide a door locking / unlocking device configured so that a deadbolt stopper for preventing an unauthorized unlocking action does not interfere with a normal unlocking operation.

In order to achieve the above object, as the first invention of the present invention, a hub with a gear provided in a lock box is rotated by manual operation or electric drive and interlocked with a sliding body having a rack meshed with the gear of the hub. In a locking / unlocking device having a configuration in which the dead bolt is moved back and forth, a stopper member that locks a part of the dead bolt when it moves to the locking position to prevent the dead bolt from moving in the unlocking direction and a slight delay time are provided. For doors, a sliding body interlocking mechanism that follows the dead bolt and a link mechanism that interlocks with the sliding body and releases the lock of the stopper member during the delay time are provided. We propose a locking / unlocking device.

As a second invention, in the door locking / unlocking device of the first invention described above, a first spring for rotationally urging the hub in the locking direction or the unlocking direction, the sliding body, and the dead bolt. We propose a locking / unlocking device for doors, which is provided between them and is provided with a second spring that gives a moving force in the locking direction to the dead bolt.

As a third invention, in the locking / unlocking device for the door of the first or second invention described above, the link mechanism includes a swinging member and an unlocking member connected to the swinging member. The swinging member is provided with a shaft portion that swingably supports the dead bolt and a pin hole at a position away from the shaft support portion, and further, the dead bolt is provided at a position corresponding to the pin hole. We propose a locking / unlocking device for a door, which is characterized in that the sliding body is provided with a long hole and a drive pin is provided so as to communicate with the pin hole and the long hole.

As a fourth invention, in the locking / unlocking device for a door according to any one of the first to third inventions described above, the stopper member is a long lever whose base is rotatably attached to the housing of the lock box. Therefore, we propose a locking / unlocking device for a door, which is provided with a spring having a spring force in a direction in which the tip portion thereof approaches the dead bolt.

A fifth aspect of the invention is characterized in that, in the door locking / unlocking device of the fourth invention described above, a convex portion is provided at the locking portion of the dead bolt locked by the tip end portion of the stopper member. We propose a locking / unlocking device for doors.

According to the first invention, the sliding body slides in the unlocking direction by the interlocking mechanism of the sliding body, so that the dead bolt is moved backward with a slight delay time.
Therefore, the link mechanism unlocks the stopper member during the delay time.

That is, while the dead bolt in the locked position is surely prevented from being unlocked due to an illegal unlocking action by locking the stopper member, when the user intentionally unlocks the dead bolt, there are few dead bolts linked to the sliding body. Since it follows the sliding body with a long delay time, the stopper member is released from the lock during the delay time when the dead bottle is stationary, and then the dead bolt moves toward the unlocking position.

As a result, the dead bolt in the locked position is surely prevented from being unlocked due to an illegal unlocking action by locking the stopper member, but there is no problem of adverse effects such as the stopper member being caught in the regular unlocking operation, and the operability is operability. It will be a good locking / unlocking device.

The second invention is characterized in that a second spring is provided between the sliding body and the dead bolt.
That is, during the unlocking operation, the dead bolt receives the spring force of the second spring at the initial stage of sliding of the sliding body and stays at the locked position.
Then, the link mechanism operates in conjunction with the operation of the sliding body to release the lock by the stopper member.

The third invention is characterized in that the link mechanism is configured by the swing member and the unlocking member, that is, the swing member swings around a support shaft portion pivotally supported by the dead bolt.
Then, the swing member swivels while the drive pin of the sliding body, which is communicated with the pin hole of the rocking body and the long hole of the dead bolt, moves in the long hole of the dead bolt due to the sliding of the sliding body. The unlocking member is operated to unlock the stopper member.

In the fourth invention, the base is pivotally attached to the housing of the lock box to form a stopper member by a long swivel lever, and the stopper member has a spring force in a direction in which the tip thereof approaches the dead bolt. It is characterized by having a configuration that gives.

According to the fifth aspect of the present invention, the tip end portion of the stopper member fits into the convex portion of the dead bolt when the dead bolt is directly operated.
For example, even if an illegal unlocking action such as finely vibrating the dead bolt while applying a force in the direction of retracting the dead bolt (moving in the unlocking direction) is performed, the concave portion of the stopper member fits into the convex portion of the dead bolt. As a result, the stopper member is not unlocked, and unauthorized unlocking is reliably prevented.

It is an exploded perspective view of the locking / unlocking device for a door which shows one Embodiment of this invention. It is a front view of the above-mentioned locking / unlocking device. It is a partial enlarged side sectional view of the said locking and unlocking apparatus which showed the partial sectional view. It is a front view which showed the internal structure (locking state) of the lock box provided in the said locking / unlocking device. It is the same front view as FIG. 4 which shows the unlocked state. It is an enlarged side view of the hub provided in the lock box of the locking / unlocking device. It is an enlarged partial view which showed the locking operation of the stopper member provided in the locking / unlocking device. FIG. 7 is an enlarged partial view similar to FIG. 7 showing the unlocking operation of the stopper member by removing the sliding body with the rack gear. FIG. 7 is an enlarged partial view showing a P portion on FIG. 7. It is sectional drawing of the locking / unlocking apparatus shown as a conventional example.

Next, an embodiment of the locking / unlocking device according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 5, the locking / unlocking device 40 includes a lock box 41 mounted on a door (not shown), an operation lock portion 42 attached to the lock box 41 on the outside of the door, and the inside of the door. It is composed of a thumb turn 43 attached to the lock box 41.

The lock box 41 is interlocked with a tubular hub 45 rotatably supported by a housing 44, a sliding body 46 with a rack gear 46a that slides in response to the rotation of the hub 45, and a sliding body 46. A dead bolt 47 or the like for advancing and retreating is provided.
A convex portion (driven portion) 45a formed along the tubular axis direction is provided on the inner peripheral surface of the hub 45.
The dead bolt 47 advances from the swivel end surface of the door, rushes into a strike (locking hole) provided in the door frame, prevents the door from opening, and locks the door.

Further, as shown in FIG. 4, the lock box 41 is equipped with an actuator 48 for electrically driving the hub 45, a detection switch 49 and a detection lever 50 for detecting the driving state of the actuator 48, electronic components constituting the controller, and the like. A spring 52 for urging the printed circuit board 51 and the hub 45 in the locking direction and in the unlocking direction is provided.
In particular, the locking / unlocking device is provided with a stopper member 53 for locking the dead bolt 47 and a link mechanism 54 for releasing the locking of the stopper member 53.

The operation lock portion 42 is provided with a cylinder lock 55 projecting rearward, and a key insertion hole 56 having a shutter is provided on the surface thereof.
As shown in FIG. 3, the operation lock portion 42 is attached to the lock box 41 so that the cylinder lock 55 is partially inserted into the hub 45.
The operation lock portion 42 is attached to the lock box 41 together with the thumb turn 43 by using the mounting screw 57 shown in FIG.

The operation lock portion 42 attached in this way has an engaging plate 59 that rotates integrally with the inner cylinder 58 of the cylinder lock 55 engaged with the convex portion 45a of the hub 45, so that the inner cylinder 58 can be rotated by the key. Therefore, the hub 45 is rotated.

On the other hand, as shown in FIG. 6, the above-mentioned hub 45 is formed of a cylindrical hub base 60 and a first gear 61 and a second gear 62 provided around the outer periphery of the hub base 60.
The first gear 61 is rotatably fitted to the hub base 60, and the second gear 62 is a fixed gear insert-molded into the hub base 60.
The clutch mechanism is composed of a gear-side protrusion 61a provided on the first gear 61 and a base-side protrusion 60a provided on the hub base 60.

As shown in FIGS. 1, 2, and 3, the hub 45 thus formed is provided in the lock box 41 so that both ends thereof are rotatably supported by the housing 44.
Then, as described above, the engaging plate 59 provided on the inner cylinder 58 of the cylinder lock 55 can be engaged with the convex portion 45a of the hub 45, and the convex portion 45a is formed as the inner cylinder 58 rotates. The hub 45 rotates when the portion 45a is driven by the engaging plate 59.
The hub 45 also rotates when the thumb turn 43 is rotated.

Further, the first gear 61 of the hub 45 is meshed with an interlocking gear 63 of an actuator 48 which is an electric mechanism, and the first gear 61 is rotated by driving the actuator 48.
That is, after the first gear 61 idles and the gear side protrusion 61a comes into contact with the base side protrusion 60a and is engaged with the clutch, the hub 45 rotates with the bubbly base 60.

Therefore, when the hub 45 rotates, the sliding body 46 provided with the rack gear 46a meshed with the second gear 62 that rotates integrally with the hub base 60 slides, so that the dead bolt 47 advances and exits.

When the hub 45 is driven by the actuator 48 and rotates, the gear side projection 61a rotates, so that the detection lever 50 that can rotate around the support shaft 64 undulates in conjunction with the gear side projection 61a. The detection switch 50 is turned ON / OFF.
Therefore, the actuator 48 is stopped and controlled by turning on the detection switch 49.
The actuator 48 enters the operation mode by receiving a wireless signal from a portable device (not shown), and is started by pressing the push button 65 of the operation lock unit 42.

On the other hand, the stopper member 53 described above is a swivel lever provided so that a part of the dead bolt 47 can be locked when the dead bolt 47 is in the locked position.
As shown in FIGS. 4, 5, 7, and 8, the stopper member 53 has its base rotatably attached to the housing 44 by a support shaft 66, and a spring 67 is provided by the spring 67. A rotational force in the right turning direction is given.

That is, since the stopper member 53 receives a turning force in the right turning direction, its tip portion 53a is always close to the dead bolt 47.
Therefore, when the dead bolt 47 moves to the locking position, as can be seen from FIGS. 3 and 7, the tip portion 53a of the stopper member 53 approaches the locking portion 47a of the dead bolt 47 and can be locked.

The stopper member 53 is locked and unlocked by the link mechanism 54.
As can be seen from FIGS. 4, 5 and 7 and 8 shown as enlarged views, the link mechanism 54 is composed of a swing member 68 and an unlocking member 69.
The swing member 68 is a three-armed plate material, and the plate portion corresponding to the first arm is pivotally attached to the dead bolt 47 so as to be swingable by the shaft portion 68a, and the plate portion corresponding to the second arm is provided with a pin hole 68b. The plate portion corresponding to the third arm is pivotally attached to the base portion of the unlocking member 69 by the shaft portion 68c.
The sliding member 68 is arranged so as to be sandwiched between the side surface of the dead bolt 47 and the side surface of the sliding body 46.

The sliding body 46 has a U shape as shown in FIG. 3, and is fitted in a slidable state with respect to the dead bolt 47 so as to cover the upper surface and the side surface of the plate-shaped dead bolt 47. There is.
The dead bolt 47 is elongated in the advancing / retreating direction of the bolt 47, and a long hole 47b is provided at a position corresponding to the pin hole 68b.
Further, a spring 71 is provided between the dead bolt 47 and the sliding body 46.
As shown in FIG. 7, the spring 71 has a recess formed in the dead bolt 47 with one end (left side in FIG. 7) in contact with the dead bolt and the other end (right side in FIG. 7) in contact with the sliding body 46. It is located inside the facility.
The extension force of the spring 71 gives the dead bolt 47 a spring force in the locking direction (leftward in FIG. 7).
The sliding body 46 is provided with a drive pin 70 that communicates with the pin hole 68b of the swing member 68 and the elongated hole 47b of the dead bolt 47. That is, when the sliding body 46 slides with respect to the dead bolt 47, the drive pin 70 axially attached to the sliding body 46 slides in the elongated hole 47b of the dead bolt 47.

In the link mechanism 54 configured in this way, in the initial stage when the sliding body 46 slides from the locked position, the drive pin 70 moves in the elongated hole 47b of the dead bolt 47, so that only the sliding body 46 with respect to the dead bolt 47. Move independently.
That is, even if the sliding body 46 slides, the dead bolt 47 does not move because it receives the spring force of the spring 71, and holds the locked position.

Therefore, when the sliding body 46 slides from the locking position shown in FIGS. 4 and 7 toward the unlocking position, the dead bolt 47 is stationary at the initial stage of sliding when the drive pin 70 moves in the elongated hole 47b. Only the sliding body 46 slides independently of the dead bolt 47, and as a result, the swing member 68 is routed by the drive pin 70 and rotates counterclockwise with the shaft portion 68a as a support shaft.

By this operation, the unlocking member 69 moves downward, and the stopper member 53 is pushed by the tip portion thereof. Therefore, the stopper member 53 turns counterclockwise against the spring force, and the tip portion 53a is rotated. The dead bolt 47 is separated from the locking portion 47a, and the stopper member 53 is released from the locking portion 53.
The locking / unlocking member 69 is adapted to slide and move in the sliding groove formed in the dead bolt 47.

The lock by the stopper member 53 is released while the drive pin 70 moves to the end of the elongated hole 47b, and then the end of the elongated hole 47b is driven by the movement of the drive pin 70 due to the sliding of the sliding body 46. By being pushed by the pin 70, the dead bolt 47 moves (backward) in the unlocking direction.
5 and 8 show a state in which the dead bolt 47 has been moved to the unlocking position, and the tip end side of the stopper member 53 rides on the chevron convex portion 47c of the dead bolt 47 to keep the lock released.

As described above, in the locking / unlocking device of the present embodiment, when the dead bolt 47 is in the locked position, the locking portion 47a of the dead bolt 47 is locked by the stopper member 53, so that the dead bolt 47 is retracted. When the user intentionally unlocks the lock, the link mechanism 54 operates at the initial stage of sliding of the sliding body 46, and the dead bolt 47 is stopped while the stopper is stopped. The locking of the member 53 is released.

That is, the locking of the stopper member 53 is released while the drive pin 70 of the sliding body 46 is moving in the elongated hole 47b, that is, the sliding of the sliding body 46 that keeps the dead bolt 47 stationary without moving. It is done in the initial operation.
Specifically, since the locking is released by the operation of the link mechanism 54 interlocked with the initial sliding of the sliding body 46, the tip portion 53a of the stopper member 53 may be caught by the locking portion 47a of the dead bolt 47. It is a locking / unlocking device with excellent operability, which results in smooth unlocking.

As a result, in the locking / unlocking device of the present embodiment, the drive pin 70 is linked to the sliding of the sliding body 46 after the initial sliding of the sliding body 46 that moves the drive pin 70 to the end of the elongated hole 47b of the dead bolt 47 and is dead. Since the bolt 47 moves in the unlocking direction, the dead bolt 47 moves with a slight delay time with respect to the sliding of the sliding body 46.

On the other hand, the tip portion 53a of the stopper member 53 may be fitted to the convex portion 47d provided on the locking portion 47a of the dead bolt 47 as shown in FIG.
With this configuration, for example, even if an illegal unlocking action such as finely vibrating the dead bolt 47 while applying a force in the direction of retracting the dead bolt 47 (moving in the unlocking direction) is performed, the stopper member Since the tip portion 53a of the 53 fits into the convex portion 47d of the dead bolt 47, the stopper member 53 is not unlocked, and an unauthorized unlocking action can be reliably prevented.

It can be applied as a lock / unlock device for doors and a lock / unlock device for vehicle doors.

40 Locking / unlocking device 41 Locking box 42 Operation lock part 45 Hub 45a Convex part 46 Sliding body 46a Rack gear 47 Dead bolt 47a Locking part 47b Long hole 47d Convex part 48 Actuator 53 Stopper member 53a Tip part 54 Link mechanism 55 Cylinder lock 58 Inner cylinder 59 Engagement plate 63 Interlocking gear 66 Support shaft 67 Spring 68 Swing member 68a Shaft part 68b Pin hole 68c Shaft part 69 Unlocking member 70 Drive pin 71 Spring

Claims (4)

In a locking / unlocking device having a configuration in which a hub with a gear provided in a lock box is rotated by manual operation or electric drive, and a dead bolt is moved forward and backward in conjunction with a sliding body having a rack meshed with the gear of the hub.
A stopper member that enables a part of the dead bolt to be locked when it moves to the locking position and prevents the dead bolt from moving in the unlocking direction.
An interlocking mechanism of the sliding body that follows the dead bolt with a slight delay with respect to the sliding body,
A link mechanism that interlocks with the sliding body and releases the locking of the stopper member during the delay time is provided .
The link mechanism includes a rocking member and an unlocking member connected to the rocking member.
The swing member is provided with a shaft portion that swingably supports the dead bolt and a pin hole at a position away from the shaft portion.
Further, the dead bolt is provided with an elongated hole at a position corresponding to the pin hole, and the sliding body is provided with a drive pin communicating with the pin hole and the elongated hole. Locking and unlocking device for doors. In the door locking / unlocking device according to claim 1.
A first spring for rotationally urging the hub in the locking or unlocking direction and a second spring provided between the sliding body and the dead bolt to give a moving force in the locking direction to the dead bolt are provided. A locking / unlocking device for doors that features. In the door locking / unlocking device according to claim 1 or 2.
The stopper member is a long lever whose base is rotatably attached to the housing of the lock box, and is provided with a spring having a spring force in a direction in which the tip thereof approaches a dead bolt. Locking and unlocking device for. In the door locking / unlocking device according to claim 3.
A locking / unlocking device for a door, characterized in that a convex portion is provided at the locking portion of the dead bolt that is locked by the tip end portion of the stopper member.

Images