JPH11182117A - Lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new lock device using a pair of magnet means and to improve ability of the lock. SOLUTION: This lock device is provided with a retractor 31 actuated by an operation member, and a slider 34 and a latch bolt 36 which is displaceably connected to the slider 34 and energized in a protruding direction in a lock box 1 attached to a door 10. In this case, the device is provided with an oscillatable locking lever 4 to be selectively engaged with the latch bolt 36, a pushing member 5 which has the first magnet means 61 at a front end and is connected to the locking lever 4 at a rear end and can horizontally displace, the second magnet means 62 which is attached to a door frame 20 and opposite to the first magnet means 61 at the same pole in closing the door: and an actuating member 8 which can be displaced through a cam piece 7 by operating a thumb turn or a cylinder lock and can restrict the locking lever 4 to the latch bolt 36 at a released position in a nonengaged state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a novel door locking device using two magnet means.

[0002]

2. Description of the Related Art A retractor operated by an operating member in a lock box attached to a door, a slider which can be retracted rearward by the retractor, and a lock which is connected so as to be relatively displaceable with respect to the slider, A lock device provided with a latch bolt biased in a direction protruding from the front plate of the box, or a lock device in which the latch bolt is directly drawn into the lock box, has been conventionally provided as a temporary lock (empty lock). It is well known that the former is, for example,
637 and the like.

[0003]

According to the present invention, a magnet means and a required member which make a pair with the above-mentioned conventional apparatus are added,
It is an object of the present invention to provide a novel locking device in which a latch bolt is also used as a dead bolt.

Another object of the present invention is to improve the usability of the lock, that is, to improve the ease of use.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a latch box which is urged in a direction protruding from a front plate of a lock box, and a latch box which is operated by an operating member to reduce the latch bolt. And a retractor retracted into the lock box. The lock device is pivotably supported near a latch bolt in the lock box so as to be selectively engaged with the latch bolt, and is provided at a non-engagement position side. A locking lever urged toward, and a pushing member provided horizontally displaceable in the vicinity of a front plate in the lock box, having a first magnet means at a front end, and having a rear end linked to the locking lever;
A second magnet means which is mounted on a portion of the door frame where the first magnet means is aligned when the door is closed, and which faces the first magnet means with the same magnetic pole when locking, and a cam portion which is rotatably supported in the lock box; A thumb turn and a cylinder lock respectively linked on the indoor side and the outdoor side of the door with respect to the piece, and the unlocking position and the locking position can be displaced between the unlocking position and the locking position via the cam piece by rotating the thumb turn or the cylinder lock. And an actuating member guided in the unlocked position so that the locking lever can be restrained in a disengaged state with respect to the latch bolt in the unlocked position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. 1 to 3 show a lock device according to a first embodiment of the present invention, and FIG.
Fig. 4 shows partly a pair of magnet means in the locking device of the embodiment.

In the first embodiment shown in FIGS.
0 is a door, 20 is a door frame, 1 is a lock box attached to the door 10, 2 is a strike plate attached to the door frame 20, 21 is an entrance of a latch bolt 36 described later provided on the strike plate 2, Numeral 22 indicates the strikes of the strike plate 2.

In the lock box 1, a retractor 31 having a T-shaped side surface, for example, fixed to the square axis of an operating member (not shown) such as a lever handle and rotated by the operating member is provided. A suitable guide means 3 formed by bending
While being guided in the front-rear direction at 2, 32a,
A slider 34 is provided which can be retracted rearward by the retractor 31 against the return spring 33.

The slider 34 and the front plate 11 are connected to each other so as to be relatively displaceable in the front-rear direction with respect to the slider 34, and protrude from the front plate 11 of the lock box 1 by a latch spring 35. There is provided a latch bolt 36 having a guide slope at the tip, which is urged in the direction of rotation, and these members constitute a lock device as a conventionally known temporary lock (empty lock).

In the lock device of the present invention, required members such as a locking lever 4, a pushing member 5, a first magnet means 61, a second magnet means 62, a cam piece 7, and an operating member 8, which will be described below, are known. Is added to the lock device as a temporary tightening.

In the vicinity of the latch bolt 36 in the lock box 1,
For example, a flange-shaped jaw 36 of the latch bolt 36
a locking lever 4 having, for example, a substantially V-shape which can be selectively engaged with the locking bolt 3 is pivotally supported by a horizontal shaft 41. The locking lever 4 has one end 4a having a latch bolt 3
6 is urged by a lever spring 42 such as a torsion spring toward the non-engaging position.

In the vicinity of the front plate 11 in the lock box 1, a pushing member 5 composed of a front mounting plate 51 and a rear rod 52 is guided by a suitable guiding means 53 and can be displaced in the horizontal direction. A permanent magnet as a first magnet means 61 is fixed on a mounting plate 51 constituting a front portion of the pressing member 5.

Further, a rod 5 constituting a rear portion of the pressing member 5 is provided.
A receiving piece 43 integrally or separately fixed to the other end 4b of the locking lever 4 is in contact with the rear end of the locking lever 4, so that the rear end of the pressing member 5 and the rear end of the locking lever 4 are provided. 4b is movably linked.

The guide means 53 may be a box-shaped guide frame fixed to the back plate 12 of the front plate 11 as shown in the drawing. In this example, the mounting plate 51 of the pressing member 5 is configured to be able to move in the guide frame 53 in the horizontal direction together with the first magnet means 61, and the rod 52 is movably penetrated through the bottom plate of the guide frame 53.

On the other hand, the second magnet means 62 can be a permanent magnet or an electromagnet.
Are installed near the rear surface of the strike plate 2 corresponding to the portion of the door frame 20 where the door frame 20 matches.

The second magnet means 62 is opposed to the first magnet means 61 with the same magnetic pole when locking, in other words, when operating the latch bolt 36 as a dead bolt.

Further, a cam piece 7 is rotatably supported at, for example, an upper position in the lock box 1, and a thumb turn and a cylinder lock are provided on the inside and outside of the door 10 with respect to the cam piece 7. (Both not shown) are associated with each other.

The dalma assembly consisting of the cam piece 7, the thumb-turn and the cylinder lock has the same configuration as that of the well-known final lock for operating the deadbolt, and further description is omitted here.

By rotating the key inserted in the thumb-turn or cylinder lock, the operating member 8 made of, for example, a rectangular plate is unlocked through the cam piece 7 in the unlocking position (the position in FIG. 1). ) And a locking position (the position in FIG. 2).

The configuration of the cam member 7 and the operating member 8 will be described. The pin 71 on the protruding piece of the cam member 7 extending in the radial direction forms a V-shape formed on the operating member 8. The driven notch 81 is movably engaged with the driven notch 81. With this configuration, the actuating member 8 is moved in the horizontal direction with the rotation of the cam piece 7.

The guide of the operating member 8 in the horizontal direction with respect to the lock box 1 is a guide means 82 composed of a set of elongated pins in the illustrated example.
It can be performed by any other guide means.

In the illustrated example, the guide member 82 is provided with the operating member 8.
Needless to say, the stopper means and the guide means of the operating member 8 may be specially provided.

When the operating member 8 as described above occupies the unlocked position (see FIG. 1), the other end 4b of the locking lever 4 receives the pressing member 5 and presses it in the direction approaching the front plate 11. , One end 4a of the locking lever 4
The latch bolt 36 cannot be engaged with the jaw 36a from behind.

The operating member 8 is in the locked position (see FIG. 2).
When the locking lever 4 is in the position, the operating member 8 is retracted to a position where the locking member 4 does not hinder the swinging movement of the locking lever 4 until the locking lever 4 can be engaged with the latch bolt 36. One end 4a is latch bolt 3
In the closed state, the latch bolt 36 is prevented from being pulled in, and the lock device is held in a locked state as final tightening.

Next, the operation of the first embodiment according to the present invention will be described. In FIG. 1, the actuating member 8 has the thumb turn advanced to the front unlocking position by the cylinder lock. In this state, the other end 4 b of the locking lever 4 is in contact with the front end of the actuating member 8.

For this reason, the locking lever 4 cannot swing clockwise in FIG. 1, and when the door 10 is closed, the magnetic repulsion between the first and second magnet means 61 and 62 by the same magnetic pole occurs. Even if a force is generated, the locking lever 4 cannot be swung clockwise, which is the engagement direction, by the pressing member 5, so that the latch bolt 36 only functions as a temporary tightening.

In other words, in the state shown in FIG. 1, the locking lever 4, the pushing member 5, and the first magnet means 61, which are part of the mechanism for exhibiting the final tightening action, are immovably restrained. This lock device operates as a temporary lock (empty lock).

The function of the device as a temporary lock (empty lock) is not different from that of the conventional empty lock, and the door 10 can be freely opened and closed by turning or pushing and pulling an operating member such as a lever handle. be able to.

On the other hand, in order to switch the unlocked state of FIG. 1 to lock the latch bolt 36 in the protruding state and to keep the latch head engaged with the strike plate 2, a thumb-turn or cylinder lock is required. The cam member 7 is rotated counterclockwise (counterclockwise) in FIG. 1 by the key inserted into the, and the operating member 8 is retracted as shown by the arrow A in FIG.

When the operating member 8 is retracted to the locked position as shown in FIG. 2, the locking lever 4 whose right-handed swing has been restrained by the operating member 8 is released, so that the locking lever 4 is released. The first and second magnet means 61 and 62 which are in close proximity with each other displace the pushing member 5 inward (to the right in FIG. 2) by the repulsive force of the magnetic poles.

Since the rear end of the pressing member 5 presses the other end 4b of the locking lever 4, the locking lever 4 swings clockwise in FIG. Latch bolt 3 with one end 4a protruding
6 occupies a position facing the jaw 36a from behind.

Here, the retraction of the latch bolt 36 by the operating member is prevented, and the lock device is in the locked state as the final tightening.

In order to return the lock device to the unlocked state, the operating member 8 may be advanced to the front unlock position by a thumb turn or a cylinder lock. At this time, the locking lever 4, the pressing member 5, and the first magnet 61
Are both returned to the unlocked position in FIG. 1 by the pushing operation by the front end of the operating member 8.

In the locking device according to the present invention, when the door is to be locked out for final tightening, after releasing the hand from the operating member while the door 10 is slightly opened by the operating member, the lock is released by a thumb turn. The actuating member 8 is retracted to the rear locking position (see FIG. 3), where the door 10 is closed.

Then, the first and second magnet means 61, 62
, The latch bolt 36 is restrained in a protruding state by the locking lever 4 (see FIG. 2). Such an operation is nothing more than an automatic locking in which locking is achieved without using a key.

FIG. 4 shows a second embodiment according to the second embodiment of the present invention.
Only the magnet means 61 and the second magnet means 62 are partially illustrated. Other configurations are the same as those of the lock device of the first embodiment.

In the lock device of the second embodiment, both the first magnet means 61 and the second magnet means 62 forming a pair are formed of one permanent magnet 61a, 62a and two yokes 61b, 62b, each of which has a side surface shape, for example. It is made to be U-shaped.

The first magnet means 61 is fixed to the movable push member 5 in the same manner as in the first embodiment, but the second magnet means 62 is provided on the side of the door frame 20 with the magnetic poles facing the first permanent magnet 61. Is mounted so that can be changed to a different magnetic pole.

In FIG. 4, reference numeral 63 denotes an actuator such as a rotary solenoid provided in the door frame 20,
The actuator 63 supports the second magnet means 62 at the tip of the output shaft 63a with the gear reducer 64 interposed.

In the locking device of the present invention, basically, when locking as final tightening, the operating member 8 is retracted to the locking position, and the two magnet means 61, 6 forming a pair.
Numeral 2 is repelled by the same magnetic pole (see FIG. 2) so that the locking lever 4 oscillated to the locked position can prevent the latch bolt 36 from being pulled in.

In the second embodiment, the actuator 6
By energizing the switch 3 at a remote position, the second magnet means 62 can be rotated by 180 ° about the horizontal axis.

By this operation, as shown in FIG. 4A, the first and second magnet means 61, 6 opposed to each other with the same magnetic pole.
As shown in FIG. 4 (B), the magnets 2 are opposed to each other with different magnetic poles.

The locking lever 4 occupying the locked position by the pushing of the pushing member 5 is moved to the lever spring 42.
Swings to the unlock position (see FIG. 1), and the latch bolt 36 in the final tightened state is unlocked remotely.

Although not shown, the present invention also provides a lock device in which the second magnet means (62) is an electromagnet and the direction of the current flowing through the electromagnet is changed by a changeover switch provided at a position remote from the lock body. Such another embodiment can be adopted.

According to another embodiment, the direction of the current flowing to the electromagnet as the second magnet means (62) is changed so that the first and second magnets are opposed to each other with the same magnetic pole at the time of locking. Remote unlocking is achieved in the same manner as in the lock device of the second embodiment, with the two magnet means facing each other with different magnetic poles.

In the lock device according to the present invention, the members near the first and second magnet means 61 and 62 are made of a non-magnetic material in order to prevent the lines of magnetic force from being interrupted or dispersed.

[0047]

The locking device according to the present invention described above has a reliable locking and unlocking operation irrespective of the simple mechanism, and can also perform automatic locking if a specific operation procedure is taken. It is possible to achieve effects such as improvement of usability.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional side view showing a first embodiment of a lock device of the present invention in an unlocked state.

FIG. 2 is a partial vertical sectional side view showing the first embodiment in a locked state.

FIG. 3 is a partial longitudinal sectional side view showing the first embodiment with the door opened.

FIG. 4 is an explanatory view seen from a side showing an outline of first and second magnet means in a second embodiment of the lock device of the present invention;
(A) is shown in a locked state, and (B) is shown in an unlocked state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Door 20 Door frame 1 Lock box 11 Front plate 31 Retractor 34 Slider 36 Latch bolt 4 Locking lever 5 Push member 61 1st magnet means 62 2nd magnet means 7 Cam piece 8 Operating member

Claims (1)

[Claims] 1. A lock box attached to a door, comprising: a latch bolt urged in a direction protruding from a front plate of the lock box; and a retractor operated by an operation member to draw the latch bolt into the lock box. A locking device, comprising: a locking lever pivotally supported in the vicinity of a latch bolt in a lock box so as to be selectively engaged with the latch bolt, and biased toward a non-engagement position. A pressing member provided in the lock box in the vicinity of a front plate in the horizontal direction so as to be displaceable in a horizontal direction, having a first magnet means at a front end, and a rear end linked to a locking lever; Is mounted on a portion of the door frame which is aligned with the first magnet means and has the same magnetic pole at the time of locking. The second magnet means is opposed to the cam piece rotatably supported in the lock box. And outdoor The unlocked position and the locked position are guided via the cam piece by the rotating operation of the thumb turn and the cylinder lock to be engaged and the thumb turn or the cylinder lock, and the locking lever is latched in the unlocked position. An operating member adapted to be restrained in a non-engaged state with respect to a bolt.