JP2502680Y2 - Electric lock - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock using a reversible rotation motor.

[0002]

2. Description of the Related Art Conventionally, as an electric lock using a reversible rotation motor, there is an electric lock described in Japanese Utility Model Laid-Open No. 61-137753, which is a clutch in which gears are disengaged from each other. It is excellent in that it can operate the motor drive unit and the manual operation unit that use the dead bolt to move in and out completely independently, but the configuration for that is complicated and the number of parts is also large. Many,
Not only is the manufacturing cost expensive, but when the locking operation is performed regardless of manual or electric operation, the indirect rotation method that rotates the hub that causes the dead bolt to move in and out via a spring was used. The cylinder lock or thumb turn of the manual operation part can be rotated even if the dead bolt cannot be projected due to inconsistency with the fitting hole etc., and due to this operation, the dead bolt does not project and is not locked However, there was a risk of mistakenly recognizing that it was locked.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention adopts a torque transmission mechanism of a rack and a pinion to simplify the structure, and a hub for moving a dead bolt into and out of a cylinder. An object of the present invention is to provide an electric lock in which an erroneous misidentification at the time of locking is prevented by directly operating it by a manual operation such as a lock or thumb turn.

[0004]

DISCLOSURE OF THE INVENTION The electric lock according to the present invention is provided in a lock case.
A dead bolt that moves in and out by rotation of a hub that is directly operated by a manual operation such as a cylinder lock or thumb turn is fitted, and rack teeth that mesh with a gear 21 integrated with the hub are formed. One slider and a second slider that slides up and down by driving a reversible rotation motor are provided so that both sliders can slide integrally via a spring, and rotation of a gear that rotates by driving the motor. Two gears, which constantly mesh with the gears, are symmetrically pivoted on the shaft, respectively, around the rotation shaft, and the plate swings in the rotation direction of the rotation shaft to pivot on the plate. The second slider is formed with a rack in which one of the supported gears selectively meshes with the first slider, and the mesh of the gear and the rack is released by pushing the shaft of the gear pivotally supported by the plate. The release plate forming the tapered portion is characterized in that it has integrally formed.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment illustrating the concrete constitution of the present invention will be described. That is, reference numeral 1 denotes a lock case constituting the electric lock of the present invention, in which a dead bolt 3 which is retracted by rotation of a hub 2 pivotally supported by a case side plate is fitted together with a click motion spring 31, and the center of a rotation axis of the hub 2 is fitted. The operation plate A from a cylinder lock or thumb turn (not shown) mounted inside or outside the door is inserted into the 90-degree play hole 22 of the door, and the hub 2 is rotated by the manual operation of the thumb turn or the cylinder lock to rotate the dead bolt 3. It is designed to work in and out. Reference numeral 4 denotes a first slider that transmits the rotational force of the reversible rotation motor 5 that is the drive source of the electric operation unit to the hub 2.
A rack 41 that meshes with a semicircular gear 21 that is integrally formed with the rotating shaft of the hub 2 is formed, and a taper portion 42 that acts to return the gear of a clutch mechanism described later to a neutral position is formed at the upper end.
A release plate 42 having a and 42b is integrally fixed. 6 also applies the rotational force of the reversible rotation motor 5 to the hub 21.
To the plate 7 pivotally supported on the rotary shaft 52 of the gear 51 fixed to the motor 5 by the second slider transmitted to the gear 5.
The gears 8 and 9 that constantly mesh with 1 are pivotally supported by the shafts 81 and 91 symmetrically about the rotation shaft 52 to form a clutch mechanism, and the plate 7 swings in the rotation direction of the rotation shaft 52 to rotate the gears. 8 or a gear wheel 9 is selectively engaged with a rack 61, and a guide rod 63 integrally fixed to a lower end horizontal piece 62 is
The spring 64 is wound around the outer periphery of the first slider 4, and the lower end horizontal piece 62 is inserted into the notch 44 of the seat 43 integrally formed at the lower end of the first slider 4, and the lower end horizontal piece 62 of the release plate 42 is bent.
By contacting the lower surface of 2c, the first slider 4
The second slider 6 can be slid up and down indirectly or directly via the spring 64. In the figure,
Reference numerals 100 and 101 denote microswitches that detect the rising and falling of the first slider 4 to check the retracted / unlocked state of the dead bolt 3, that is, the locked / unlocked state, and the upper bent portion 4 of the release plate 42.
Each make contact is closed via the cover plate 102 which is reversed by the contact of the 2d, and a confirmation signal is issued. In addition, micro switches (not shown) for energization control are provided in parallel on the back side of the micro switches 100 and 101, and when the second slider 6 is moved up and down, the break contact is opened and closed to open the motor 5. Energization control is performed. Reference numeral 103 is a reed switch for detecting a closed state, and 104 is a latch bolt for temporary locking, which is unlocked by operating a knob or a handle.

[0006]

The operation of the electric lock of the present invention will be described with reference to the illustrated embodiment. When locking by manual operation, that is, by operating the cylinder lock on the outside of the door or the thumb turn on the inside of the door, when the cylinder lock or thumb turn is operated to rotate the operation plate A to the right, that is, in the clockwise direction in the unlocked state of FIG. 1, The rotating shaft of the hub 2 rotates and the dead bolt 3
Is projected and locked as shown in FIG. At this time, since the rack 41 of the first slider 4 meshes with the gear 21 that is integral with the rotation shaft of the hub 2, the second slider 6 descends on the first slider 4 day and so on as the hub 2 rotates, As shown in FIG. 2, the gears 8 and 9 of the clutch mechanism are in a neutral state where they do not mesh with the rack 61, so that both sliders 4 and 6 descend without any resistance, and do not become resistance during manual operation by a cylinder lock or thumb turn. The same applies to the unlocking operation. Next, when locking and unlocking by energizing the motor, in the unlocked state of FIG. 1 and FIG.
When the motor 5 is energized so as to rotate the gear 51 in the state shown in FIGS. 2 and 5 counterclockwise by pressing the lock switch, the gear 8 meshing with the gear 51 rotates counterclockwise by the left rotation of the gear 51 while rotating the rotation shaft 52 of the gear 51. With the fulcrum as a fulcrum, it swings leftward integrally with the play 7 and meshes with the rack 61 of the second slider 6 (FIG. 6). Since the gear 8 meshed with the rack 61 is rotating to the right, the rack 61, that is, the second slider 6 descends, and the first slider 4 also descends via the spring 64. When the first slider descends, the gear 21 of the hub 2 that meshes with the rack 41 rotates to the right, causing the dead bolt 3 to project and lock (FIG. 3). At this time, the release plate 42 integrated with the first slider 4 also descends, and the tapered portion 42a on the top of the release plate 42 pushes the shaft 91 of the gear 9 to the right as shown in FIG. With the fulcrum as a fulcrum, the gear 8 swings to the left, that is, in the direction in which it disengages from the meshing state with the rack 61 and returns to the neutral state in which it does not mesh with the rack 61. At the same time as the second slider 6 descends, the break contact of the one microswitch for energization control is pushed, the energization to the motor 5 is cut off, and the rotation of the motor is stopped. In the locked state of FIG. 3, in the unlocked state, when the switch for unlocking is pushed and the motor 5 is energized so as to rotate in the opposite direction, that is, to the right, the gear 51 rotates to the right and the gear 9 meshing with this gear shifts. While rotating counterclockwise while swinging counterclockwise with the rotating shaft 52 as a fulcrum and meshing with the rack 61, the rack 61, that is, the second slider 6 ascends, and the first slider 4 moves to the lower end bending piece 42c. Horizontal piece 6
It is directly pulled up by the engagement of two. The hub 2 rotates counterclockwise due to the rise of the first slider 4, and the dead bolt 3 is retracted and unlocked (FIG. 1). At this time, since the lower taper portion 42b of the release plate 42 pushes the shaft 81 of the gear 8 to the right, the plate 7 swings left about the rotation shaft 52 as a fulcrum and returns to the neutral state where it does not mesh with the rack 61. Simultaneously with the rise of the second slider 6, the break contact of the other microswitch for energization control is pushed, the energization to the motor is cut off, and the rotation of the motor is stopped. After that, each time the motor is energized, the above operation is repeated to unlock the door. However, the door is not completely closed in the unlocked state, and the dead bolt 2 does not match the fitting hole of the bracket. When the locking switch is pressed when the hub 2 cannot be projected, the motor 5 drives the second slider 6 to descend, but the hub 2 cannot rotate in the direction in which the dead bolt 3 projects and the first slider is fixed. Since it is in the state, the spring 64
Only is compressed. When the second slider 6 descends, the power supply to the motor 5 is cut off and the rotation of the motor is stopped. At this time, however, the first slider 4 is in the raised position and is in the unlocked state. You can see that it is not locked. As a method of notifying this unlocked state,
An alarm may be issued when the lock confirmation signal is not input within a certain period of time after pressing the lock switch. At this time, if the dead bolt is prevented from projecting by pushing the door or the like, the first slider 4 descends due to the restoring force of the accumulated spring 64, and the hub 2 rotates,
The dead bolt 3 is projected and locked.

[0007]

As described above, according to the electric lock of the present invention, in the electric lock using the reversible rotation motor, the gear of the clutch mechanism is automatically attached to the rack of the slider which is the operating plate at the start of driving the motor. Since a simple structure is adopted in which the above engagement is automatically released at the same time as the engagement, locking and unlocking operations are completed, the connecting member between the hub and the manual operation section is used to manually operate the hub as in the prior art. Since there is no need to intervene, etc., the number of parts is reduced, the manufacturing cost is low, and the hub is a direct-acting type with a manual operation part,
If the dead bolt is in an unprotrudable state due to a mismatch with the fitting hole of the bracket, it will be noticed abnormally due to the inability to rotate when manually locking the dead bolt, and the dead bolt cannot be ejected. Since it can be locked by locking it, it is safe and does not mistakenly think that it was locked by rotating it even though the dead bolt does not project as in the prior art, and it is safe and structurally safe. It is also superior to the conventional technology in terms of surface, and adopts a torque transmission mechanism with a rack and pinion, so the transmission efficiency is better than a torque transmission mechanism using a worm gear, and the motor can be downsized. It also has the advantage that

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an electric lock of the present invention in an unlocked state.

FIG. 2 is a partially cutaway rear view taken along line XX of FIG.

FIG. 3 is a partially cut side view of the electric lock in a locked state.

FIG. 4 is an exploded perspective view showing a relationship between a clutch mechanism and first and second sliders.

FIG. 5 is an explanatory diagram showing a relationship between a clutch mechanism and first and second sliders in an unlocked state.

FIG. 6 is an explanatory diagram showing a relationship between a clutch mechanism and first and second sliders during locking.

FIG. 7 is an explanatory diagram showing a relationship between a clutch mechanism and first and second sliders in a locked state.

[Explanation of symbols]

 1 Lock Case 2 Hub 3 Dead Bolt 4 First Slider 41 Rack 42 Release Plate 5 Reversible Rotation Motor 51 Gear 6 Second Slider 64 Spring 7 Plate 8 Gear 9 Gear

Claims (1)

(57) [Scope of utility model registration request] 1. A rack in which a dead bolt (3) which is retracted by rotation of a hub (2) which is directly operated by a manual operation such as a cylinder lock or thumb turn is fitted in a lock case (1), and which meshes with a gear (21) integral with the hub. An upper and lower slidable first slider 4 having teeth 41 ... 41 and a second slider 6 which slides up and down by driving a reversible rotation motor 5.
Is provided so that both sliders 4 and 6 can slide integrally via a spring 64, and the second slider 6 has
The rotating shaft 5 of the gear 51 that is rotated by the drive of the motor 5.
Gears 8 and 9 that are constantly meshed with the gear 51 are symmetrically pivoted about shafts 81 and 91 around the rotary shaft 52, respectively, and the plate is supported in the rotational direction of the rotary shaft 52. The rack 61 is formed on the second slider 6 which swings to selectively mesh with the gear 8 or the gear 9. The first slider 4 pushes the shafts 81, 91 of the gears 8, 9 to push the gear 8
Alternatively, an electric lock characterized by integrally forming a release plate 42 having tapered portions 42a and 42b for releasing the meshing between the gear 9 and the rack 61.