JP6687284B2 - Door locking / unlocking device - Google Patents

Description

  The present invention relates to a locking / unlocking device for a door that rotates a hub by a manually operated member or an electric mechanism to move a deadbolt forward and backward, and particularly to provide a locking / unlocking device suitable for downsizing by improving the hub. is there.

FIG. 8 is a cross-sectional view of a door locking / unlocking device shown as a conventional example, and shows a locked state in which the opening of the door is locked.
This locking / unlocking device is equipped with an electric mechanism including a motor 11. When the motor 11 starts in response to a wireless signal from a portable device, a worm wheel 13 meshed with a worm wheel 12 provided on a motor output shaft is released. The gears 15 and 16 meshed with the gear 14 that rotates in conjunction with each other and rotates integrally with the worm wheel 13 are interlocked with each other, and pivot around the support shaft 17 as a fulcrum.

As a result, the slider 19 in which the rack 18 is meshed with the gear 16 moves leftward, so that the pin 21 of the dead bolt 20 is driven by the end of the elongated hole 22 of the slider 19 and moves leftward.
As a result, the dead bolt 20 is retracted and retracted into the case 24 of the lock box 23, and the door is unlocked so that the door can be opened.

When the locking / unlocking device is locked, if the motor 11 is driven in the reverse direction, each gear operates in the opposite direction to the above, so that the slider 19 moves to the right and the dead bolt 20 interlocked with the slider 19 is illustrated. Move to the state.
Therefore, the dead bolt 20 rushes into the strike (concave hole) of the door frame, and the open state of the door is locked.

Further, in the locking / unlocking device described above, by disposing the cylinder lock or the thumb turn at the portion of the support shaft 17, the dead bolt 20 is advanced or retracted in the same manner as described above by operating the manual operation member including the cylinder lock or the thumb turn. It can be locked.
During operation by the manual operation member, the electromagnetic coupling of the clutch plates 25 and 26 between the worm wheel 13 and the gear 14 is released, and the clutch is disengaged.

Further, a detection switch 27 is provided in the case 24, and this detection switch 27 is operated by the 突 piece 28 of the slider 19.
That is, the detection switch 27 detects the moving position of the slider 19 and controls the motor.

Japanese Utility Model Publication No. 7-6457

  In the above-described conventional locking / unlocking device, since the interlocking system of the motor 11 and the dead bolt 20 is composed of many parts such as the worm 12, the worm wheel 13, the gears 14, 15, 16 and the slider 19, However, the lock box 23 becomes large, which is not suitable for downsizing of the locking / unlocking device.

Further, since it has the interlocking system including many gears, the operability of manual operation such as a cylinder lock is not preferable.
Therefore, an object of the present invention is to provide a locking / unlocking device for a door, which is suitable for downsizing as much as possible and is excellent in operability.

In order to achieve the above-mentioned object, in the present invention, as a first invention, a cylindrical hub provided in a lock box is rotated by a manual operation member or an electric mechanism, and the dead bolt is advanced and retracted in conjunction with the rotation of the hub. In the locking and unlocking device for the door to lock and unlock,
The hub is formed of a cylindrical hub base body and a first gear and a second gear provided on the outer periphery of the hub base body in the direction around the cylinder axis. The first gear is allowed to idle in a predetermined range. A door mounted on a hub base and meshed with an interlocking gear of the electric mechanism, the second gear mounted so as to rotate integrally with the hub base, and meshed with a rack gear for advancing and retracting the dead bolt. We propose a locking and unlocking device.

  As a second invention, in the locking / unlocking device for a door of the above-mentioned first invention, a base-side projection formed on the outer peripheral surface of the hub base and protruding in the cylinder axis direction is formed on the first gear. And a clutch mechanism formed by a gear-side protrusion that protrudes in the cylinder axis direction of the hub base and engages with or separates from the base-side protrusion at a predetermined rotation angle. We propose a locking and unlocking device.

  As a third invention, in the locking / unlocking device for a door of the above-mentioned first or second invention, the first gear is provided on an outer peripheral portion on one end side of the hub base, and the second gear is the hub base. The present invention proposes a locking / unlocking device for a door, which is provided on the outer peripheral portion on the other end side.

  As a fourth invention, in the door locking / unlocking device of any one of the above-mentioned first to third inventions, a detection switch for detecting an operating state of the electric mechanism and the first gear are formed. A locking / unlocking device for a door is provided, which is provided with a detection lever that interlocks with the rotation of the gear-side protrusion and that switches the detection switch.

  According to the first aspect of the present invention, the hub is formed by the tubular hub base body, and the first gear and the second gear provided on the outer periphery of the hub base body in the direction around the cylinder axis, and the first gear is , Is attached to the hub base body so as to rotate freely within a predetermined range, and is meshed with an interlocking gear of the electric mechanism. The second gear is mounted so as to rotate integrally with the hub base body, and is meshed with a rack gear for advancing and retracting the dead bolt. .

Therefore, in the hub thus configured, the hub base and the first and second gears are coaxially integrated, so that the space in the thickness direction of the door is effectively utilized to make the lock box housing dimensions (vertical width, horizontal width). Therefore, it is possible to provide a locking / unlocking device suitable for downsizing.
Further, since the rack gear for advancing and retracting the dead bolt is driven by the second gear of the hub, the driving force of the dead bolt becomes constant, and further, the operation feeling of the dead bolt is improved and the noise is reduced. it can.

   In the second invention, since the clutch mechanism is formed around the outer periphery of the hub base, the first and second gears and the clutch mechanism can be arranged in a stacked manner along the rotation axis of the hub. Can be downsized

The third invention is characterized in that the first gear is provided on the outer peripheral portion on one end side of the hub base body and the second gear is provided on the outer peripheral portion on the other end side of the hub base body.

  According to the fourth aspect of the present invention, since the detection lever that rises and falls in conjunction with the rotation of the gear side protrusion provided on the first gear and the detection switch that switches the switch in response to this detection lever are provided, the electric mechanism is controlled. It is possible to arrange the detection switch that is attached to the hub, which is advantageous in shortening the housing size of the lock box.

It is an exploded perspective view of a locking / unlocking device for doors showing one embodiment of the present invention. It is a front view of the locking / unlocking device mentioned above. It is a partial expanded side view of the said locking / unlocking device which showed a part cross section. It is the front view which showed the internal structure (locked 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 expansion perspective view showing the hub base of the hub with which the locking / unlocking device was provided. It is an expanded side view of the hub with which the said locking / unlocking device was equipped. It is sectional drawing of the locking / unlocking device shown as a prior art example.

Next, an embodiment of a locking / unlocking device according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 4, the locking / unlocking device 40 includes a lock box 41 mounted on a door (not shown), an operation lock section 42 attached to the lock box 41 outside the door, and an inside of the door. And the thumb turn 43 attached to the lock box 41.

The lock box 41 is provided with a cylindrical hub 45 rotatably supported by a housing 44, a dead bolt 46 that moves forward and backward in response to the rotation of the hub 45, and the like.
In addition, 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-mentioned dead bolt 46 enters the strike (locking hole) provided in the door frame by advancing and locks the door to prevent its opening.

In addition, as shown in FIG. 4, the lock box 41 includes an actuator 47 for electrically driving the hub 45, a sliding body 48 with a rack gear 48a for driving the dead bolt 46 forward and backward, and a detection switch for detecting the driving state of the actuator 47. 49, a detection lever 50, and a printed circuit board 51 on which electronic components and the like that constitute the controller are mounted.

The operation lock portion 42 is provided with a cylinder lock 52 protruding rearward, and a key insertion hole 53 having a shutter is provided 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 52 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 attaching screw 54 shown in FIG.

  In the operation lock portion 42 thus attached, the engaging plate 56 that rotates integrally with the inner cylinder 55 of the cylinder lock 52 is engaged with the convex portion 45a of the hub 45, and the inner cylinder 55 is prevented from rotating by the key. Therefore, the hub 45 is rotated.

On the other hand, FIG. 6 is an enlarged perspective view of a hub base forming the above hub, and FIG. 7 is an enlarged side view of the above hub 45.
As can be seen from these drawings, the hub 45 is formed of a cylindrical hub base 57, and a first gear 58 and a second gear 59 provided on the outer periphery of the hub base 57.

Specifically, as shown in FIG. 6, on the inner surface of the hub base 57, a convex portion 45a as a driven portion formed along the cylinder axis direction and a middle portion in the cylinder axis direction are formed. There is provided a base-side protrusion 57b which is protruded from the ring-shaped portion 57a integrally formed on the outer peripheral surface in the axial direction of the cylinder.

A ring-shaped first gear 58 is rotatably fitted to the hub base 57 on the outer periphery of the metal hub base 57 that contacts one end 57c, and the other end 57d. A second gear 59 made of resin, which is insert-molded into the hub base 57, is provided on the outer periphery of the.
Incidentally, the first gear 58 is provided with a gear side protrusion 58a which is protruded in the axial direction of the cylinder.

A clutch mechanism is configured by the base-side protrusion 57b of the hub base 57 and the gear-side protrusion 58a of the first gear 58 described above. The first gear 58 idles within a predetermined range, and the gear-side protrusion 58a moves at a predetermined position. By contacting the base-side projection 57b, the clutch is connected, and the first gear 58 and the second gear 59 are integrally rotated via the hub base 57 by this clutch connection.
Therefore, the clutch is not connected until the gear-side protrusion 58a contacts the base-side protrusion 57b, and the second gear 59 can rotate together with the hub base 57 without being connected to the first gear 58.

The hub 45 thus formed is provided in the lock box 41 such that both ends of the hub base 57 are rotatably supported by the housing 44, as shown in FIGS. 1, 3 and 4.
Then, as described above, the engaging plate 56 provided on the inner cylinder 55 of the cylinder lock 52 can be engaged with the convex portion 45a of the hub 45, and the convex portion 45a is formed in accordance with the rotation of the inner cylinder 55. The hub 45 rotates as the portion 45a is driven by the engagement plate 56.
The hub 45 also rotates in the same manner as above when the thumb turn 46 is rotated.

The first gear 58 of the hub 45 is meshed with the interlocking gear 60 of the actuator 47 that is an electric mechanism, and the first gear 58 is rotated by driving the actuator 47.
That is, when the actuator 47 is driven, the first gear 58 idles with respect to the hub base 57, the gear-side protrusion 58a contacts the base-side protrusion 57b, and the first gear 58 and the second gear 59 are coupled to each other. Rotate with 57.

  Therefore, when the hub 45 rotates, the sliding body 48 provided with the rack gear 48a meshed with the second gear 59 that rotates integrally with the hub base 57 slides, so that the dead bolt 46 advances and withdraws.

When the hub 45 is rotated by being driven by the actuator 47, the gear-side protrusion 58a turns, so that the detection lever 50 that can turn about the support shaft 62 that contacts the outer periphery of the hub 45 serves as the gear-side protrusion 58a. It undulates in conjunction.
That is, the detection lever 50 is activated by riding on the key-side protrusion 58a to turn on the detection switch 49, and falls down from the gear-side protrusion 58a to move down to turn off the detection switch 49.

Therefore, the actuator 47 is stopped and controlled by turning on the detection switch 49.
In addition, the actuator 47 receives a wireless signal from a portable device (not shown), enters the operation mode, and is started by pressing the push button 65 of the operation lock unit 42.

In addition, the stopper member 63 shown in FIG. 4 locks a part of the advanced dead bolt 46 by the tip portion 63a thereof to prevent the dead bolt 46 from being unintentionally retracted (unauthorized unlocking).
Therefore, in the stopper member 63, when the dead bolt 46 is retracted by a normal operation, the tip portion 63a of the stopper member 63 is retracted from a part of the dead bolt 46, as shown in FIG.
Further, the spring 64 urges the dead bolt 46 in the advancing direction at the locking position and in the retreating direction at the unlocking position.

As described above, the hub 45 can be rotated by driving the convex portion 45a by the manual operation member (cylinder lock 52 or thumb turn 43) or by driving the first gear 58 by the actuator 47.
When the actuator 47 is driven, the manual operation member is configured so that the engagement plate 56 idles within a predetermined range in which the engagement plate 56 does not contact the convex portion 45a of the hub 45.

Further, since the second gear 59 drives the rack gear 48a in response to the rotation of the hub 45, the sliding body 48 slides and the dead bolt 46 advances in conjunction with the sliding body 48 as shown in FIG. It is in the locked state, and as shown in FIG. 5, it exits and is in the unlocked state.

As can be seen from the present embodiment, the hub 45 includes a first gear 58 and a second gear 59 provided on the outer periphery of the hub base 57, and a clutch mechanism formed of the base-side protrusion 57b and the gear-side protrusion 58a. Since the first gear 58, the second gear 59 and the clutch mechanism can be collectively formed on the same circular axis as the hub base 57, the hub 45 becomes compact and the hub 45 is Since the structure of the interlocking system with the actuator 47 and the interlocking system with the hub 45 and the rack gear 48a for advancing and retracting the dead bolt 46 is simplified, the size of the lock box 41 can be shortened, and as a result, downsizing can be achieved. It becomes a suitable locking and unlocking device for doors.

  Further, since the rack gear 48a for advancing and retracting the dead bolt 46 is driven by the second gear 59 of the hub 45, the driving force of the dead bottle 46 becomes constant, and in addition, the operation feeling of the dead bolt 46 is improved. Can be silenced.

Although the preferred embodiment has been described above, in the hub 45, the hub base 51 can be made of metal (die casting), and the first gear 58 and the second gear 59 can be made of synthetic resin material. All of 57, the first gear 58, and the second gear 59 can be formed of a synthetic resin material.
The second gear 59 may be formed as a ring-shaped gear as a separate body and fitted and fixed to the hub base 51 without being insert-molded in the hub base 51.

  It can be applied as a door locking / unlocking device or a vehicle door locking / unlocking device.

40 Locking / unlocking device 41 Lock box 42 Operation lock part 43 Thumb turn 44 Housing 45 Hub 45a Convex part 46 Dead bolt 47 Actuator 48 Sliding body 48a Rack gear 49 Detection switch 50 Detection lever 52 Cylinder lock 56 Engagement plate 57 Hub base 57b Base side projection 58 first gear 58a gear-side protrusion 59 second gear 60 interlocking gear

Claims (4)

In a locking / unlocking device for a door, which rotates a cylindrical hub provided in a lock box by a manually operated member or an electric mechanism, and locks / unlocks by advancing and retracting a dead bolt in conjunction with the rotation of this hub,
The hub is formed of a cylindrical hub base, and a first gear and a second gear provided on the outer periphery of the hub base around the cylinder axis.
The first gear is attached to the hub base body so as to idle in a predetermined range, and is meshed with the interlocking gear of the electric mechanism,
The locking / unlocking device for a door, wherein the second gear is attached so as to rotate integrally with the hub base, and is meshed with a rack gear for advancing and retracting the dead bolt. The locking / unlocking device for doors according to claim 1,
A base-side protrusion formed on the outer peripheral surface of the hub base and protruding in the cylinder axis direction, and a protrusion formed on the first gear in the cylinder-axis direction of the hub base and having a predetermined size with respect to the base-side protrusion. A locking / unlocking device for a door, characterized in that a clutch mechanism formed by a gear side protrusion that engages or disengages at a rotation angle of is provided. The locking / unlocking device for doors according to claim 1 or 2,
The locking / unlocking device for a door, wherein the first gear is provided on an outer peripheral portion on one end side of the hub base body, and the second gear is provided on an outer peripheral portion on the other end side of the hub base body. In the locking / unlocking device for the door according to any one of claims 1 to 3,
A detection switch for detecting the operating state of the electric mechanism,
A locking / unlocking device for a door, comprising: a detection lever that interlocks with the rotation of a gear-side protrusion formed on the first gear and that switches the detection switch.

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