JPH01223277A - Electric lock for hinged door - Google Patents

Abstract

PURPOSE:To make a mechanism small-sized, reduce the consumption quantity of a cell, and secure the operation by providing a clutch mechanism operated by an electromagnet and restricting the movement of a retractor and a slider. CONSTITUTION:A clutch mechanism operated by an electromagnet 46 is provided between a retractor 6 moved by the rotation of a hub plate 2 and a slider 19 moved interlockingly with it to protrude or submerge a dead bolt 31. When a clutch is disengaged, the movement of the retractor 6 is not transmitted to the slider 19, the dead bolt 1 is not submerged, and locking is maintained. When the electromagnet 46 is excited and the clutch is engaged, the dead bolt 31 is submerged by the rotation of the hub plate 2 via the retractor 6 and the slider 19, and locking is released. The malfunction due to the mechanical shock or the biting of a motor can be thereby prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric lock used for a swinging door at the entrance of a general house, a housing complex such as an apartment, or a hotel.

[Conventional technology]

Conventional electric locks are as shown in Japanese Utility Model Publication No. 51-32794 or Publication No. 56-24771, etc.
In most cases, the latch is fixed using a solenoid or the like, and the latch fixed type or dead latch type is used.

However, the conventional latch fixing type or dead latch type has a drawback that it lacks mechanical strength and is easily broken compared to a dead bolt.

Electric locks that are unlocked using a deadbolt have excellent mechanical strength and are difficult to break, so they have high locking reliability, but they have the following drawbacks.

[Problem to be solved by the invention]

Traditionally, deadbolt unlocking mechanisms have used motors or solenoids as drive sources, but they have the disadvantage of requiring a large lock case to house them, and they also have the disadvantage of being large in size when dirt gets caught in the motor. There was a risk that the unlocking mechanism would not operate, and with a solenoid, there was a risk that the lock would unlock if a shock was applied to the lock case.

Further, since both the motor and the solenoid require a large current, when a battery is used as a power source, there is a problem that the life of the battery is shortened.

The present invention uses a clutch mechanism using an electromagnet to miniaturize the unlocking mechanism, consumes less power, and operates reliably.

[Means to solve the problem]

In order to achieve the above purpose, a clutch mechanism is installed between the retractor, which moves within the case by the rotation of the hub plate, and the slider, which moves within the case and makes the deadbolt appear and retract. a check pin whose tip fits into the plate-shaped groove and a lock whose tip fits into the flat-bottom groove on a slider capable of sliding on the sliding surface; insert the pin,
A pusher is provided that has a movable piece that can be attracted to an electromagnet fixed to the case and contacts the rear ends of the check pin and the lock pin, and when the movable piece is not attracted, it is removed from the dish-shaped groove by movement of the retractor. When the checked pin pushes the pusher and the lock pin comes out of the flat bottom groove and the clutch is disengaged, and the movable piece is attracted, the pusher presses the check pin and lock pin to engage the clutch. It was configured as follows.

[For production]

The operation of the electric lock for a hinged door constructed as described above is as follows.

(Locked state) The latch bolt protrudes from the case, and the retractor pushed by the latch bolt is at the forward end.

The deadbolt protrudes from the case, a slider for moving the deadbolt in and out is located at the forward end and contacts the sliding surface of the retractor, and the tips of the check pin and lock pin are fitted into the dish-shaped groove and the flat-bottomed groove, respectively.

The movable piece of the pusher that contacts the rear ends of the check pin and lock pin is in a state where it is almost in contact with the electromagnet, but it is not attracted to the electromagnet that is not energized.

In this situation, even if the hub plate is rotated from the lever handle of the hinged door, the retractor is retracted, and the latch bolt is retracted, the tip of the check pin may become detached from the dish-shaped groove due to the retractor retracting. Since the pusher is pushed and the pusher moves in a direction away from the slider, the tip of the lock pin separates from the flat bottom groove and the slider does not move back.

In other words, since the clutch is disengaged, the deadbolt remains protruded.

(Unlock) The latch bolt and dead bolt are at the forward end.

When the electromagnet is energized in such a locked state, the movable piece that is almost in contact with the electromagnet is attracted to the electromagnet.

Next, when the retractor is moved backward using the lever handle of the hinged door, etc., the latch bolt retracts and the pusher's check pin pressing force is greater than the release force generated at the check pin tip, so the lock pin pressing force of the pusher is not maintained. , the lock pin remains inserted into the flat bottom groove.

That is, since the clutch is engaged, the slider moves backward together with the retractor, and the deadbolt retracts accordingly.

〔Example〕

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

FIG. 1 shows a partially cutaway front view of the electric lock in the locked state, and the hub plate 2 rotatably provided on the case 1 is
One end of the spring 3 is pressed by the other end of the spring 3, which is secured to the case l, and is biased counterclockwise.

The hub plate has a square hole 4 at the center of rotation, and the square shaft of a lever handle or knob fits into the square hole 4, and when the lever handle or the like is rotated clockwise, a protrusion formed on the hub plate 2 is formed. pushes the retractor 6.

The retractor 6 is provided so as to be movable back and forth with respect to the front 7 which is the front surface of the case l, and as shown in FIG. 5 which is a front view of FIG. 4 and a XX sectional view of FIG.
is installed vertically, and a hole 9 is provided in the vertical wall 8.

The shaft portion 12 of the latch bolt 11 passes through the thrust washers 10.10 and the hole 9 provided on both sides of the vertical wall 8, and the snap ring 14 is inserted into the annular groove 13 provided at the rear end of the shaft portion 12. is fitted.

A spring support member 15 having a hole into which the shaft portion 12 is inserted is fixed to the inner wall surface of the case l, and a spring 17 is inserted between the spring support member 15 and a spring bearing 16 fixed to the shaft portion 12.

Therefore, the latch bolt 11 is pressed by the spring 17 and protrudes outward from the front 7, and also presses the retractor 6 via the thrust washer 10, so that the retractor 6 is stopped at the forward end.

A sliding surface 18 is formed on the upper part of the retractor 6.
A slider 19 is provided on the slider 8.

The slider 19 has a shaft portion 2 on the side of the arm 20 projecting upward.
1 is provided, and a long groove 22 is carved in parallel to the sliding surface 18 on the lower side surface of the shaft portion 21.

The long groove 22 has a shaft 2 projecting from the side wall of one end of the link 23.
4 is slidably inserted, and on the opposite side of the shaft 24 is a case 1.
A shaft 25 protrudingly fits into a hole provided in the link 2.
The shaft part 21 is slidably inserted into a long hole 26 bored in the middle part of the link 23, one end of an intermediate link 27 is pivotally connected to the other side of the link 23, and the other end of the intermediate link 27 is It is pivotally connected to a pin 30 installed in a drive section 29 provided on a cam plate 28 that is pivotally connected to the case 1 .

A dead pole 310 recess 32 engages with the drive portion 29 .

Therefore, when the slider 19 is moved to the forward end in the front 7 direction, the shaft portion 21 pushes the elongated hole 26 in the front 7 direction, the link 23 rotates counterclockwise about the shaft 25, and the intermediate link 27 The pin 30 is pulled in the direction of the front 7, and the driving part 29 pushes the recessed part 32 in the direction of the front 7, so that the dead bolt 31 protrudes from the front 7.

The slider 19 has holes 33.3 as shown in FIG.
4 is provided through the hole 33 of the sliding surface 18 when the slider 19 and the retractor 6 are both at the forward movement end.
A shallow conical dish-shaped groove 35 is provided at a position facing the hole 34 of the sliding surface 18, and a flat bottom groove 36 is provided at a position facing the hole 34 of the sliding surface 18.
(See Figures 6 and 7).

The flat bottom groove 36 is formed in a long shape in the moving direction of the retractor 6, and the side wall opposite to the front 7 is an inclined surface 36a.

A shaft portion 37 having a conical tip and a cylindrical portion 38 having a hole through which the shaft portion 37 passes are loosely fitted into the hole 33.
8, the tip of the spring 39 is inserted into the dish-shaped groove 35.
A check pin is configured to fit into the.

A lock pin 40 having a cylindrical shape and a flange 40a at the rear end is inserted into the hole 34, and the hole 340 has a stepped portion 41 and a flange 40a.
A spring 42 is inserted between them, and the lock pin 40 is biased rearward (upward in the drawing).

A pusher 43 is disposed behind the check pin cylindrical portion 38 and the lock pin 40.

The pusher 43 has one end connected to a pin 44 installed in the case 1.
The movable piece 45 is attached to the other end.

The movable piece 45 is made of a magnetic material and is located at a position where it almost contacts an electromagnet 46 fixed to the case 1.

The operation of the electric lock for a hinged door constructed as above will be explained.

(Locked state) As shown in FIG. 1, the hub plate 2 is pressed by the spring 3 and is at the end of rotation in the counterclockwise direction, and the latch plate 11 is pressed by the spring 17 and protrudes from the front 7, and the retractor 6 is being pushed to the forward movement end.

On the other hand, the deadbolt 31 protrudes from the front 7, the driving part 29 of the cam plate 28 presses the link 23 in the direction of the front 7 via the intermediate link 27, and the link 23 rotates counterclockwise about the shaft 25 as a fulcrum. The slider 19 is pushed to the forward movement end via the shaft portion 21 that engages with the elongated hole 26.

Since both the retractor 6 and the slider 19 are located at the forward movement end, the tip of the shaft portion 37 of the check pin fits into the dish-shaped groove 35 (see FIG. 6(a)), and the lock pin 40
The flange portion 40a is pressed by the pusher 43 and the tip thereof is fitted into the flat bottom groove 36 (see FIG. 7(A)).

The pusher 43 rotates around the pin 44 due to its own weight, presses the lock pin 40, and is in a position where the movable piece 45 almost contacts the electromagnet 46.

From this state, when the hub plate 2 is rotated clockwise using a lever handle or the like of the hinged door, the retractor 6 is moved backward and the latch bolt 11 is retracted into the front 7.

On the other hand, due to the backward movement of the retractor 6, the shaft portion 37 of the check pin is pushed out of the moving dish-shaped groove 35, and the spring 3
9, the cylindrical portion of the check pin presses the pusher 43 (see FIG. 6 (b)), so the pusher 43 retreats upward using the pin 44 as a fulcrum, and the lock pin 40 rises due to the pressing force of the spring 42. and separates from the flat bottom groove 36 (
(See Figure 7 (b)).

Therefore, since the slider 19 that has been disengaged from the retractor 6 does not move rearward, the deadbolt 31 remains protruding from the front 7 (see FIG. 2).

(Unlocking) When the electromagnet 46 is energized by an unlocking signal in the locked state as shown in FIG.

When the hub plate 2 is rotated clockwise from this state, the retractor 6 moves backward and the latch pole [1 is retracted into the front 7.

The dish-shaped groove 35 moves as the retractor 6 moves backward.
The shaft portion 37 of the check pin that has detached further presses the cylindrical portion 38 via the spring 39, and the cylindrical portion 38 presses the pusher 43 (see Fig. 6 (c)), but the force of the movable piece is greater than this pressing force. The pressing force of the pusher 43 that attracts 45 is stronger,
Since the pusher 43 is not pushed upward, the lock pin 40 remains engaged in the flat bottom groove 36 (see Fig. 7(C)).
), the slider 19 retreats together with the retractor 6 while remaining engaged with the retractor 6.

As the slider 19 retreats, the link 23 having the elongated hole 26 that engages with the shaft portion 21 rotates clockwise about the shaft 25, and rotates the drive portion 29 counterclockwise via the intermediate link 27. , the deadbolt 31 having a recess 32 that engages with the drive portion 29 is inserted into the front 7 and unlocked (see FIG. 3).

As explained above, the deadbolt 31 is recessed into the front 7 by rotating the hub plate 2 clockwise after energizing the electromagnet 46. However, even when the electromagnet 46 is not energized, by turning the The deadbolt 31 can be retracted by rotating the cam plate 28 counterclockwise.

In such unlocking, the retractor 6 is located at the forward end,
Only the slider 19 will move back from the forward end, but in this case, the check pin shaft 37 will separate from the dish-shaped groove 35 due to the slider 19 moving back, and the pusher 43 will move back.
is pushed upward and the lock pin 40 is removed from the flat bottom groove 36, so the retractor 6 is held at the forward end.

At this time, if the electromagnet 46 is energized, the lock pin 40 does not separate from the flat-bottomed groove 36, but rises along the inclined surface 36a of the flat-bottomed groove 36, so that the retractor 6 is held at the forward end.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

(a) Since the movable piece is close enough to almost touch the electromagnet, even an extremely small electric current is attracted with a strong force.

Therefore, the battery consumption is small and it is suitable for a battery built-in electric lock.

(b) Because it is an electromagnetic clutch, the mechanism is smaller,
Can be stored in a conventional lock case.

(C) Unless the electromagnet is attracted, there is no risk of unlocking due to the rotation of the hub plate, and unlike conventional electric locks, there is no longer a risk of unlocking due to shock or malfunction due to motor jamming. .

[Brief explanation of the drawing]

1 to 7 show embodiments of the present invention, FIG. 1 is a partially cutaway front view of the electric lock in the locked state with the latch bolt protruding, and FIG. 2 is a partially cutaway front view of the electric lock in the locked state and Figure 3 is a partially cutaway front view of the electric lock in the unlocked state, Figure 4 is a front view of the main parts of the electric lock, Figure 5 is the front view of the electric lock in the unlocked state, XX sectional view in Figure 4, Figure 6 (A), (B), and (C) are front views showing the operation of the check pin, and Figure 7 (A), (B), and (C) are front views showing the operation of the lock pin. It is. DESCRIPTION OF SYMBOLS 1...Case, 2...Hub plate, 5...Protrusion, 6...Retractor, 7...Front, 11...
Latch bolt, 12... Shaft, 17... Spring, 18
...Sliding surface, 19...Slider, 23...Link, 27...Intermediate link, 28...Cam plate,
29... Drive unit, 31... Dead bolt, 35...
・Dish-shaped groove, 36...Flat bottom groove, 37...Shaft of check pin, 38...Cylinder part of check pin, 40...Lock pin, 43...Pusher 145...Movable piece ,
46...Electromagnet. Patent applicant: Kokusan Metal Industry Co., Ltd. Figure 1 Figure 3

Claims (1)

[Claims] A retractor that moves within the case and pushes the latch bolt in the direction of recessing into the case by the rotation of a hub plate rotatably provided inside the case is provided with a sliding surface, and the sliding surface has a dish-shaped groove. A slider is provided with a flat-bottomed groove, and is slidably provided on the sliding surface and makes the deadbolt move in and out as it moves.A check pin whose tip fits into the dish-shaped groove and a lock pin whose tip fits into the flat-bottomed groove. A pusher is provided, which has a movable piece that is close to the electromagnet fixed to the case and can be attracted to the electromagnet, and contacts the rear ends of the check pin and the lock pin, and when the movable piece is not attracted, the retractor When the check pin, which is detached from the dish-shaped groove due to the movement of An electric lock for a hinged door, characterized in that the slider moves together with the retractor when pressed.