JPH11217962A - Electric lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive electric lock, in good response to remote control operation, in a simple structure capable of performing manual operation as well. SOLUTION: A clutch device 2 is formed of a first clutch part 13 and a second clutch part 14 adapted to be rotated therearound. The first clutch part 13 connects a thumb turn 3 and a dead bolt 4. A roller 17 arranged on the outer periphery of the first clutch part 13 is energized outward. The second clutch part 14 is connected to a speed reducer 6 to be rotationally moved and its inner periphery is engaged/disengaged at the engagement recess 15 thereof with/from a connection member 17. In the rotation of the first clutch part 13 with the manual operation of the thumb turn 3, the rotation range of the second clutch part 14 is wider than that of the first clutch part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock used for a door of a house or the like.

[0002]

2. Description of the Related Art Conventionally, in an electric lock, connection and disconnection are performed by a clutch using an electric signal, so that the door can be locked and unlocked. This type of electric lock has a problem that the operation is delayed because the clutch must be switched before the locking and unlocking operations are performed. There is also a problem that the structure of the clutch is complicated and expensive.

[0003] In order to solve these problems, the actual fairness 6-
An electric lock disclosed in Japanese Patent Publication No. 39026 has been devised. In this electric lock, when a remote control is operated, the motor is driven, power is transmitted from the drive gear to the transmission gear, and the rotation of the transmission gear causes the dead bolt to slide to lock or unlock. Further, when the thumb turn is manually operated, the connector is rotated, and the pin provided on the connector is pressed against the inclined edge of the recess formed in the transmission gear. As a result, the transmission gear rotates against the urging force of the spring, and the dead bolt slides to lock or unlock.

[0004]

However, in the above-mentioned electric lock, in the case of manual operation, it is necessary to rotate the transmission gear against the urging force of the spring. There is a problem in point.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive electric lock having a simple structure which has a good response to a remote control operation and can be easily operated manually.

[0006]

According to the present invention, there is provided an electric lock in which a dead bolt can be moved between a locked position and an unlocked position by manual operation of a thumb turn or driving of a motor. , A clutch device including a first clutch unit that connects the thumb turn and the deadbolt and a second clutch unit that is rotated by driving the motor is provided, and the first clutch unit and the second clutch unit are connected to each other. A connecting member urged so as to protrude is provided on one of the connecting members, and an engaging concave portion for engaging and disengaging the connecting member is formed on the other of the connecting members. Also, the rotation range of the second clutch unit is widened.

The connecting member may be a rotatable rolling member.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The electric lock shown in FIG.
In this configuration, the clutch device 2 and the thumb turn 3 are mounted, and the dead bolt 4 of the lock device 22 can be driven.

The electric lock main body 1 is formed by disposing a speed reducer 6 in a case 5 as shown in FIG. As shown in FIG. 5, the speed reducer 6 drives the gear motor 7 to rotate the cylindrical shaft 11 integrated with the gear 10 via the plurality of gears 8, 9, 10 in forward and reverse directions. is there. The shaft 11 protrudes from the reduction gear 6 to the rear of the electric lock main body 1. The gear motor 7 is
Drive control is performed based on an electric signal from a remote controller (not shown). In addition, the shaft 1
One center hole is opened, and as shown in FIG. 3B, a first reed switch 12a and a second reed switch 12b are provided at a predetermined angle around the center hole. These switches 12a and 12b are turned on when a position detecting magnet 21a of the thumb turn 3 described later approaches to detect a lock position and an unlock position, respectively. Gear motor 7 driven by remote control
Are stopped based on detection signals of the lock position and the unlock position from each of the reed switches 12a and 12b.

The clutch device 2 has a cylindrical first clutch portion 13 rotatably housed in a cylindrical second clutch portion 14.

The first clutch section 13 is provided with a first end on one end side.
A shaft portion 13a is provided to penetrate the second clutch portion 14 and protrude from the front surface of the electric lock main body 1. On the other hand, the second shaft portion 13b on the other end side of the first clutch portion 13 is
It is connected to a dead bolt 4 described later. Also, the first
Grooves 15 are formed in the body 13c of the clutch 13 at symmetrical positions along the longitudinal direction. In each groove 15,
Rollers 17 as rolling members urged outward by springs 16 are provided.

The small diameter portion 1 at one end of the second clutch portion 14
4a is fitted on the outer periphery of a shaft 11 protruding from the electric lock main body 1, and the driving force of the gear motor 7 is changed to the gears 8, 9,.
10. Also, the second
A pair of engagement grooves 18a, 18b extending in the longitudinal direction are formed at opposing positions on the inner peripheral surface of the clutch portion 14, respectively.

The thumb turn 3 has a plate-shaped operating portion 19 and a fitting portion 20 into which the first shaft portion 13a of the first clutch portion 13 is fitted. When the first shaft portion 13a is fitted to the fitting portion 20, the magnet holding portion 21 having the position detecting magnet 21a is integrated (the position detecting magnet 21a is provided integrally with the thumb turn 3). May be.). When the thumb turn 3 is operated, the position detecting magnet 21a rotates together with the magnet holding portion 21, and the reed switches 12a, 1a of the speed reduction device 6 are rotated.
2b is turned on and off, and the first clutch unit 13 rotates.

As shown in FIG. 6, the dead bolt 4 is provided in the lock device 22, and is protruded and retracted from the side surface via the cam member 24 by the rotation of the dead cam 23. The dead cam 23 is substantially L-shaped and pivots about a shaft 23a.
3 and is rotated in the directions of arrows a and a 'around the shaft portion 23a by manual operation of a key or thumb turn 3 (not shown) or driving of the gear motor 7.
The cam member 24 responds to the dead cam 23 by an arrow b,
It slides in the direction b ′ to push the dead bolt 4. However, the description of the drive mechanism on the key side is omitted here.

Next, the operation when the electric lock is mounted on a house door will be described. The electric lock is mounted in a concave portion formed on the side surface of the door so that the thumb tern 3 is located indoors.

When the remote controller is operated from the unlocked state, the gear motor 7 rotates forward and the second clutch unit 14 also rotates forward via the gears 8, 9, and 10 (clockwise in FIG. 7A).
Thereby, the engagement grooves 18a, 18 of the second clutch portion 14 are formed.
7b engages with the roller 17 of the first clutch portion 13 (FIG. 7).
(See (b)), both rotate integrally. As a result, the dead bolt 4 is moved from the dead cam 23 through the cam member 24.
Is driven, and the door is locked. At this time, the rotation of the first clutch unit 13 is stopped, and the position detecting magnet 2 is rotated.
When 1 turns on the second reed switch 12b, the gear motor 7 is turned off. Then, the second clutch unit 14
Stops when the roller 17 falls off the engagement grooves 18a and 18b (see FIG. 7C).

When the remote controller is operated from the locked state,
When the gear motor 7 rotates in the reverse direction and the second clutch portion 14 also rotates in the reverse direction, and the rollers 17 are engaged with the engagement grooves 18a and 18b, the two rotate integrally. As a result, the deadbolt 4 sinks into the door, and the door is unlocked. Also in this case, after the rotation of the first clutch portion 13 is stopped, only the second clutch portion 14 continues to rotate, and the roller 17 falls out of the engagement grooves 18a and 18b.

As described above, locking and unlocking of the door by operating the remote controller is performed by driving the dead bolt 4 from the second clutch unit 14 via the first clutch unit 13.

Further, when a locking operation is performed by a remote controller in a state where the door is not completely closed, the dead bolt 4 is locked in a state where it does not project or does not project sufficiently. In this case, the first clutch portion 13 is also locked through the cam member 24 and the dead cam 23, but the transmission of the force from the second clutch portion 14 to the first clutch portion 13 is performed by the engagement grooves 18 a and 18 b and the roller 17. This is done through the engagement portion with For this reason, the engagement grooves 18a, 1
The roller 17 comes off from 8b, the locking of the door is stopped, and the speed reducer 6 is not damaged.

In this case, if the reed switch 12b is not turned on within a predetermined time after the start of the remote control operation, it is determined that the door is not completely closed, and the fact is notified. Is preferred.

Subsequently, when the thumb turn 3 is manually operated to rotate forward from the unlocked state, the first clutch portion 13 integrally rotates forward and the dead bolt 4 projects from the dead cam 23 via the cam member 24. The door is locked.
At this time, the engagement grooves 18a, 18b of the second clutch portion 14
Are located on the opposite side to the rotation direction of the first clutch unit 13. Accordingly, the rotation of the thumb turn 3 causes the engagement grooves 18a, 18b of the second clutch portion 14 to move to the first positions.
There is no interference with the roller 17 of the clutch unit 13. For this reason, the rotation of the thumb turn 3 does not require an extra force that is not related to the unlocking of the door as in the related art.

Further, when the thumb turn 3 is manually operated so as to reversely rotate from the locked state, the first clutch portion 13 is integrally reversely rotated, and the door is unlocked. Also in this case, as described above, the engagement grooves 18a and 18b of the second clutch portion 14 do not interfere with the rollers 17 of the first clutch portion 13, so that appropriate operability can be obtained.

[0024]

As is apparent from the above description, according to the electric lock of the present invention, the second operation is performed manually by the thumb turn.
When rotating the clutch unit, the first clutch unit does not hinder its operation, so that the deadbolt can be smoothly moved and good locking and unlocking can be performed. Also, the first
Since it has a simple structure in which the clutch portion is simply rotated around the second clutch portion, it can be manufactured at low cost. Further, even if the door is not completely closed and the deadbolt cannot be protruded, the first clutch portion idles and no overload acts on the gear. Also, when locking or unlocking by remote control operation, even if the motor breaks down or stops with the dead bolt protruding due to power failure etc., the dead bolt can be operated by the thumb turn, so even in an emergency The door can be opened and closed. Further, since the clutch has a simple structure, even if the clutch is damaged, it can be replaced easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is an exploded side view of an electric lock according to the present embodiment.

FIG. 2 is a front view of the electric lock according to the embodiment.

3A is a sectional view taken along line AA of FIG. 2A and FIG. 3B is a plan view of a portion near the position detecting magnet.

FIG. 4 is a side view (b) and a rear view (b) of FIG. 2;

FIG. 5 is a side sectional view (a) and a plan sectional view (b) of the reduction gear transmission of FIG. 4 (b).

FIG. 6 is a plan sectional view of the lock device provided with the dead bolt of FIG. 1;

FIG. 7 is a schematic plan view showing a driving state of the clutch device of FIG. 1;

[Explanation of symbols]

 Reference Signs List 2 clutch device 3 thumb turn 4 dead bolt 13 first clutch portion 14 second clutch portion 16 spring 17 roller 18a, 18b engagement groove

Claims (2)

[Claims] 1. An electric lock in which a dead bolt can be moved between a lock position and an unlock position by manual operation of a thumb turn or driving of a motor, comprising: a first clutch portion connecting between the thumb turn and the dead bolt; A clutch device including a second clutch portion that is rotated by driving the motor; and a connecting member urged to project to one of the first clutch portion and the second clutch portion. And an engagement recess for engaging and disengaging the connection member is formed on the other side, and a rotation range of the second clutch portion is wider than a rotation of the first clutch portion by manual operation of the thumb turn. Tablets. 2. The electric lock according to claim 1, wherein the connection member is a rotatable rolling member.