JP2017197990A - Locking device for door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device that enhances a feeling of operation by smoothly unlocking a stopper member, which locks a dead bolt at a locking position and directly makes the dead bolt move backward for unlocking when a user performs intentional unlocking.SOLUTION: An unlocking device which moves a dead bolt 47 backward associatively with a sliding body 46 meshing with a gear of a geared hub 45 that a lock box 41 comprises by rotating the geared hub 45 through manual operation or by an electric mechanism is provided with: a stopper member 53 which locks a part of the dead bolt 47 when it moves to a locking position so as to stop a movement in an unlocking direction; an interlocking mechanism for the sliding body 46 which allows the dead bolt 47 to follow up with a slight delay time; and a link mechanism 54 which interlocks with the sliding body 46 to unlock the stopper member 53 in the delay time.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a door locking / unlocking device in which a hub is rotated by a manual operation member or an electric mechanism, and the deadbolt is advanced and retracted. It is characterized by including a stopper member.

As shown in FIG. 10, a door locking / unlocking device that prevents the deadbolt from moving out due to fraud is known.
In this locking / unlocking device, the stoppers 11a, 11b are moved to the rear side of the dead bolt 10 by the spring force of the coil springs 12a, 12b above and below the dead bolt 10 to prevent the dead bolt 10 from retreating from the advanced position. .

Specifically, when the rack gear 115 is interlocked by the gear 14 that is electrically driven by the motor 13, the sliding body 16 moves, and accordingly, 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 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.

When the motor 13 is rotated in the reverse direction and the dead bolt 10 is moved backward toward the unlocking position, the stoppers 11a and 11b climb up the slopes 16a and 16b of the sliding body 16 and leave the rear portion of the dead bolt 10 as shown in the figure. .
Note that the dead bolt 10 can be advanced and retracted in the same manner as described above even if the gear 14 is rotated manually by operating the cylinder lock or thumb turn.
When manual operation is performed, the clutch plate 18 is released and the clutch is disconnected.

  As a result, when the dead bolt 10 is in the locked position, even if an attempt is made to retract the dead bolt 10 using a tool or the like, since the dead bolt 10 hits the stoppers 11a and 11b, the backward movement of the dead bolt 10 is prevented. , Door unlocking due to fraud is prevented.

Japanese Patent No.5-9596

  In the above-described 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 unlocked by an illegal act, Even when the user intentionally performs the unlocking operation, the stoppers 11a and 11b climb and slide on the inclined surfaces 16a and 16b of the sliding body 16, and thus the unlocking operation becomes heavy. 11b may be caught on the slopes 16a and 16b, and there is a problem that operability is not always preferable.

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

  To achieve the above object, according to the present invention, as a first aspect of the present invention, a geared hub 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 hub gear. In the locking / unlocking device configured to advance and retract the deadbolt, when the deadbolt moves to the locking position, a part of the deadbolt can be locked to prevent movement in the unlocking direction, and a slight delay time is provided. And a sliding mechanism interlocking mechanism for following the dead bolt and a link mechanism interlocking with the sliding mechanism and releasing the stopper member during the delay time. We propose a locking and unlocking device.

  As a second invention, in the door locking / unlocking device according to the first invention described above, the first spring for rotating and biasing the hub in the locking direction or the unlocking direction, the sliding body, and the dead bolt A door locking / unlocking device is provided, which is provided with a second spring for providing a dead bolt with a moving force in the locking direction.

  As a third invention, in the door locking / unlocking device according to the first or second invention described above, the link mechanism includes a swing member and an unlocking member connected to the swing member, The swing member is provided with a shaft portion pivotally supported by the dead bolt and a pin hole at a position away from the shaft support portion. Further, the dead bolt is provided at a position corresponding to the pin hole. A door locking / unlocking device is provided in which a long hole is provided and a driving pin connected to the pin hole and the long hole is provided on the sliding body.

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

As a fifth invention, in the door locking / unlocking device according to the fourth invention described above, the locking portion of the dead bolt locked by the tip of the stopper member is provided with a convex portion. We propose a locking and unlocking device for doors.

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

That is, the dead bolt in the locking position is reliably prevented from being unlocked by the unauthorized unlocking action by the locking of the stopper member, while when the user intentionally unlocks, the dead bolt interlocked with the sliding body is slightly Since it follows the sliding body after a long delay time, the stopper member is unlocked during the delay time when the dead bottle is stationary, and then the dead bolt moves toward the unlocking position.

As a result, the deadbolt in the locking position is reliably prevented from being unlocked by the unauthorized unlocking action by locking the stopper member, while there is no adverse problem such as the stopper member being caught during regular unlocking operation. It becomes a good locking and 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 sliding of the sliding body and remains in the locked position.
Then, the link mechanism operates in conjunction with the operation of the sliding body to release the locking by the stopper member.

The third invention is characterized in that a link mechanism is constituted by the swing member and the locking release member. That is, the swing member swings around a support shaft portion pivotally supported by a dead bolt.
Then, while the drive pin of the sliding body 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 by the sliding of the sliding body, the rocking member rotates. The locking release member is operated to release the stopper member.

  According to a fourth aspect of the present invention, a base member is pivotally attached to the housing of the lock box, and a stopper member is formed by an elongated swiveling lever. Further, the stopper member has a spring force in a direction in which the tip end portion approaches the dead bolt. It is characterized by the configuration that gives

According to the fifth aspect of the present invention, the tip of the stopper member is fitted to the convex portion of the dead bolt during an illegal act of directly operating the dead bolt.
For example, even if an unauthorized unlocking action that causes the dead bolt to vibrate finely while applying a force in the direction of retreating the dead bolt (moving in the unlocking direction), the concave portion of the stopper member fits into the convex portion of the dead bolt. Therefore, the stopper member is not unlocked, and the unauthorized unlocking action is reliably prevented.

It is a disassembled perspective view of the locking / unlocking apparatus for doors which shows one Embodiment of this invention. It is a front view of an above-described locking / unlocking apparatus. It is a partial expanded sectional side view of the said locking / unlocking apparatus which showed a part in cross section. It is the front view which showed the internal structure (locking state) of the lock box with which the said locking / unlocking apparatus is equipped. It is a front view similar to FIG. 4 which shows an unlocked state. It is an expanded side view of the hub with which the lock box of the said locking / unlocking device was equipped. It is the expanded partial view which showed the latching operation | movement of the stopper member with which the said locking / unlocking apparatus was equipped. FIG. 8 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. It is the fragmentary figure which expanded and showed P part on FIG. It is sectional drawing of the locking / unlocking apparatus shown as a prior art 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 outside the door, and an inner side of the door. The thumb turn 43 is attached to the lock box 41.

The lock box 41 includes a cylindrical hub 45 rotatably supported by a housing 44, a sliding body 46 with a rack gear 46 a that slides in response to the rotation of the hub 45, and an interlock with the sliding body 46. A dead bolt 47 or the like that is advanced and retracted is provided.
A convex portion (driven portion) 45a formed along the cylinder axis direction is provided on the inner peripheral surface of the hub 45.
The above-described dead bolt 47 advances from the turning end surface of the door, enters a strike (locking hole) provided in the door frame, and locks the door while preventing the door from opening.

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 for detecting the driving state of the actuator 48, a detection lever 50, 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, this 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 protruding rearward, and has a key insertion hole 56 provided with a shutter on the surface.
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 using the attachment screw 57 shown in FIG.

  The operation lock portion 42 attached in this way has an engagement 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 is rotated by the key. Therefore, the hub 45 is rotated.

On the other hand, as shown in FIG. 6, the above-described hub 45 is formed by a cylindrical hub base 60 and a first gear 61 and a second gear 62 provided on 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 that is insert-molded on the hub base 60.
The gear-side protrusion 61a provided on the first gear 61 and the base-side protrusion 60a provided on the hub base 60 constitute a clutch mechanism.

The hub 45 formed in this manner is provided in the lock box 41 so that both ends thereof are rotatably supported by the housing 44 as shown in FIGS.
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 45 a of the hub 45, and the convex portion 45 a of the hub 45 is convex as the inner cylinder 58 rotates. The hub 45 rotates when the part 45a is driven by the engagement plate 59.
Even when the thumb turn 43 is rotated, the hub 45 rotates as described above.

Further, the first gear 61 of the hub 45 is engaged with an interlocking gear 63 of an actuator 48 that is an electric mechanism, and the first gear 61 is rotated by driving the actuator 48.
That is, the hub 45 rotates with the bubb base 60 after the first gear 61 idles and the gear side protrusion 61a contacts the base side protrusion 60a and is engaged with the clutch.

  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 retreats.

When the hub 45 is driven and rotated by the actuator 48, the gear-side protrusion 61a turns, so that the detection lever 50 that can turn around the support shaft 64 is raised and lowered in conjunction with the gear-side protrusion 61a. The detection switch 50 is turned on / off.
Therefore, the actuator 48 is controlled to stop when the detection switch 49 is turned on.
The actuator 48 receives a radio signal from a portable device (not shown), enters an operation mode, and starts when the push button 65 of the operation lock unit 42 is pressed.

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

That is, since the stopper member 53 receives the turning force in the right turning direction, the tip end portion 53 a 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 distal end portion 53 a of the stopper member 53 approaches the locking portion 47 a 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 and 5 and FIGS. 7 and 8 shown as enlarged views, the link mechanism 54 includes a swing member 68 and an unlocking member 69.
The swing member 68 is a three-arm plate, the plate portion that contacts the first arm is pivotally attached to the dead bolt 47 so as to be swingable by the shaft portion 68a, and the pin portion 68b is provided in the plate portion that contacts the second arm. In addition, the plate portion that contacts the third arm is pivotally attached to the base portion of the locking release member 69 by the shaft portion 68c.
The sliding member 68 is disposed 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-like dead bolt 47. Yes.
In the dead bolt 47, a long hole 47b is provided in a position corresponding to the pin hole 68b which is elongated in the forward / backward direction of the bolt 47.
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 arranged in the office.
A spring force in the locking direction (left direction in FIG. 7) is applied to the dead bolt 47 by the extending force of the spring 71.
The sliding body 46 is provided with a drive pin 70 that communicates with the pin hole 68b of the swinging member 68 and the long 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 pivotally attached to the sliding body 46 slides in the long hole 47b of the dead bolt 47.

In the link mechanism 54 configured as described above, since the drive pin 70 moves in the long hole 47b of the dead bolt 47 at the initial stage when the sliding body 46 slides from the locking position, only the sliding body 46 is in contact with the dead bolt 47. Move independently.
That is, even if the sliding body 46 slides, the dead bolt 47 receives the spring force of the spring 71 and therefore does not move and maintains the locking position.

  Therefore, when the sliding body 46 slides from the locked position shown in FIGS. 4 and 7 toward the unlocked position, the dead bolt 47 is stationary at the initial stage of sliding when the drive pin 70 moves in the long hole 47b. As a result, only the sliding body 46 slides independently with respect to the dead bolt 47. As a result, the swinging member 68 is drawn around by the drive pin 70, and rotates counterclockwise around the shaft portion 68a.

By this operation, the locking release 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 The stopper member 53 is released from the locking portion 47a of the dead bolt 47 and released.
The locking / unlocking member 69 is slidably moved in a sliding groove formed in the dead bolt 47.

While the drive pin 70 moves to the end of the long hole 47b, the stopper member 53 releases the lock, and then the end of the long hole 47b is driven by the movement of the drive pin 70 due to the sliding of the sliding body 46. The dead bolt 47 is moved (retracted) in the unlocking direction by being pushed by the pin 70.
5 and 8 show a state in which the dead bolt 47 has moved to the unlocked position, and the distal end side of the stopper member 53 rides on the mountain-shaped convex portion 47c of the dead bolt 47 and keeps the unlocking.

As described above, when the dead bolt 47 is in the locked position, the locking / unlocking device according to the present embodiment retracts the dead bolt 47 because the locking portion 47a of the dead bolt 47 is locked by the stopper member 53. In the case where the user intentionally unlocks, the link mechanism 54 operates at the initial stage of sliding of the sliding body 46, and the dead bolt 47 is stationary while the stopper is stopped. The locking of the member 53 is released.

That is, when the stopper member 53 is unlocked, the sliding body 46 slides while the drive pin 70 of the sliding body 46 is moving in the long hole 47b, that is, the dead bolt 47 is not moved and remains stationary. Performed in the initial operation
Specifically, since the locking is released by the operation of the link mechanism 54 that is interlocked at the initial sliding of the sliding body 46, the leading end 53 a of the stopper member 53 may be caught by the locking portion 47 a of the dead bolt 47. Therefore, the locking and unlocking device is smoothly released and has excellent operability.

  As a result, in the locking / unlocking device of this embodiment, the dead end is interlocked with 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 long hole 47b of the dead bolt 47. 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 end portion 53a of the stopper member 53 described above can be configured to be fitted to a convex portion 47d provided on the locking portion 47a of the dead bolt 47 as shown in FIG.
By configuring in this way, for example, even if an unauthorized unlocking action is performed such that the dead bolt 47 is vibrated finely while applying a force in the direction in which the dead bolt 47 moves backward (moves in the unlocking direction), the stopper member Since the front end portion 53a of the 53 is fitted into the convex portion 47d of the dead bolt 47, the stopper member 53 is not unlocked, and the unauthorized unlocking action can be reliably prevented.

  The present invention can be applied as a door locking / unlocking device or a vehicle door locking / unlocking device.

40 Locking and unlocking device 41 Lock box 42 Operation lock portion 45 Hub 45a Convex portion 46 Sliding body 46a Rack gear 47 Dead bolt 47a Locking portion 47b Long hole 47d Convex portion 48 Actuator 53 Stopper member 53a Tip portion 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 portion 68b Pin hole 68c Shaft portion 69 Unlocking member 70 Drive pin 71 Spring

Claims (5)

In a locking / unlocking device having a configuration in which a hub with a gear provided in a lock box is rotated manually or by electric drive, and a dead bolt is advanced and retracted in conjunction with a sliding body having a rack meshed with the gear of the hub.
When the dead bolt moves to the locking position, a part thereof can be locked, and a stopper member for preventing movement in the unlocking direction;
A sliding mechanism interlocking mechanism that follows a dead bolt with a slight delay time,
A door locking / unlocking device comprising a link mechanism that interlocks with the sliding body and releases the stopper member during the delay time. In the door locking / unlocking device according to claim 1,
A first spring that urges the hub in a locking direction or an unlocking direction; and a second spring that is provided between the sliding body and the dead bolt and applies a moving force in the locking direction to the dead bolt. A locking / unlocking device for doors. In the door locking / unlocking device according to claim 1 or 2,
The link mechanism includes a swinging member and an unlocking member connected to the swinging member,
The swing member is provided with a shaft portion pivotally supported by the dead bolt and a pin hole at a position away from the shaft support portion,
Further, the dead bolt is provided with a long 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 long hole. Locking and unlocking device for doors. In the door locking / unlocking device according to any one of claims 1 to 3,
The stopper member is a long lever whose base is pivotally attached to the housing of the lock box, and includes a spring having a spring force in a direction in which a distal end thereof approaches a dead bolt. Locking / unlocking device. In the door locking / unlocking device according to claim 4,
A locking / unlocking device for a door, characterized in that a protruding portion is provided in a locking portion of the dead bolt locked by a tip portion of the stopper member.

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