JP3870352B2 - Locking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a novel door locking device using two magnet means.
[0002]
[Prior art]
A retractor that is operated by an operating member in a lock box attached to the door, a slider that can be retracted rearward by the retractor, and a slider that is connected so as to be relatively displaceable from the front plate of the lock box. A lock device provided with a latch bolt biased in a protruding direction or a lock device in which a latch bolt is directly pulled into a lock box has been conventionally known as a temporary lock (empty lock). The former is disclosed in, for example, Japanese Patent Publication No. 2-57637.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide a novel locking device in which a magnet means and a required member paired with the above-described conventional device are added so that a latch bolt can also be used as a dead bolt.
[0004]
Another object of the present invention is to improve the usability of the lock, that is, the ease of use.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is provided with a latch bolt that is biased in a direction protruding from the front plate of the lock box, and a retractor that is actuated by an operation member and that pulls the latch bolt into the lock box. A locking lever pivotally supported in the vicinity of the latch bolt in the lock box so as to be selectively engaged with the latch bolt and biased toward the non-engagement position; A pressing member provided in the vicinity of the front plate in the lock box so as to be horizontally displaceable and having a first magnet means at the front end and linked with a locking lever at the rear end is aligned with the first magnet means when the door is closed. The second magnet means mounted on the door frame portion and facing the first magnet means with the same magnetic pole when locked, and the cam part piece rotatably supported in the lock box on the indoor side of the door and the chamber Link on the outside The thumb turn and cylinder lock are guided, and the thumb turn or cylinder lock is pivotally operated so that it can be displaced between the unlock position and the lock position via the cam piece, and the locking lever is used as a latch bolt in the unlock position. And an actuating member that can be restrained in a non-engaged state.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
1 to 3 show a locking device according to a first embodiment of the present invention, and FIG. 4 partially shows a pair of magnet means in a locking device according to a second embodiment of the present invention.
[0007]
In the first embodiment shown in FIGS. 1 to 3, 10 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, and 21 is a strike plate 2. The latch bolt 36, which will be described later, is provided at the entrance of the latch bolt 36, and 22 indicates the throat of the strike plate 2.
[0008]
The lock box 1 is formed by folding a plate member, for example, a retractor 31 that is fixed to a square shaft of an operation member (not shown) such as a lever handle and is rotated by the operation member. A slider 34 is provided so that it can be guided in the front-rear direction by appropriate guide means 32, 32a, and retracted against the return spring 33 by the retractor 31. .
[0009]
It straddles between the slider 34 and the front plate 11 and is connected so as to be relatively displaceable in the front-rear direction with respect to the slider 34, and in a direction protruding from the front plate 11 of the lock box 1 by the latch spring 35. A latch bolt 36 having a guide slope at its tip is provided, and these members constitute a locking device as a conventionally known temporary lock (empty lock).
[0010]
In the locking device of the present invention, the required members such as the locking lever 4, the pushing member 5, the first magnet means 61, the second magnet means 62, the cam piece 7, and the actuating member 8, which will be sequentially described below, are known temporary fastenings. It is added to the lock device.
[0011]
In the vicinity of the latch bolt 36 in the lock box 1, for example, a locking lever 4 having a substantially V shape, which can be selectively engaged with a jaw portion 36 a having a flange shape, for example, is provided on the horizontal shaft 41. The locking lever 4 is biased by a lever spring 42 such as a torsion spring so that one end 4a of the locking lever 4 is directed to a non-engagement position with respect to the latch bolt 36.
[0012]
Further, in the vicinity of the front plate 11 in the lock box 1, a pushing member 5 comprising a front mounting plate 51 and a rear bar 52 is guided by an appropriate guide means 53 so as to be displaceable in the horizontal direction. A permanent magnet as the first magnet means 61 is fixed on the mounting plate 51 constituting the front portion of the pressing member 5.
[0013]
A receiving piece 43 fixed to the other end portion 4b of the locking lever 4 as a single body or as a separate member is in contact with the rear end of the rod body 52 constituting the rear portion of the pressing member 5. The rear end of the member 5 and the rear end 4b of the locking lever 4 are movably linked.
[0014]
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 illustrated example. In this example, the mounting plate 51 of the pushing member 5 is configured to be able to move in the horizontal direction in the guide frame 53 together with the first magnet means 61, and the rod body 52 penetrates the bottom plate of the guide frame 53 movably.
[0015]
On the other hand, the 2nd magnet means 62 can be made into a permanent magnet or an electromagnet, and the part of the door frame 20 with which the said 1st magnet means 61 aligns at the time of a door closing, for example, near the back surface of the strike plate 2 corresponded to the part. It is attached.
[0016]
Further, the second magnet means 62 is opposed to the first magnet means 61 with the same magnetic pole at the time of locking, in other words, when the latch bolt 36 acts as a dead bolt.
[0017]
Further, a cam piece 7 is rotatably supported, for example, at an upper position in the lock box 1, and a thumb turn and a cylinder lock (both of the cam piece 7 are provided on the indoor side and the outdoor side of the door 10. (Not shown) are linked to each other.
[0018]
The dharma assembly consisting of the cam piece 7, the thumb turn and the cylinder lock has the same configuration as that of a well-known lock for operating the dead bolt, and further description thereof is omitted here.
[0019]
By rotating the key inserted in the thumb turn or cylinder lock, the operating member 8 made of, for example, a rectangular plate material is moved between the unlocked position (position in FIG. 1) and locked via the cam piece 7. It is provided so that it may slide horizontally between positions (position of FIG. 2).
[0020]
The related configuration between the cam piece 7 and the actuating member 8 will be described. A pin 71 on the projecting piece extending in the radial direction of the cam piece 7 forms a V-shaped notch 81 formed in the actuating member 8. With this configuration, the actuating member 8 is moved in the horizontal direction as the cam piece 7 rotates.
[0021]
Further, the horizontal guide of the actuating member 8 with respect to the lock box 1 can be performed by the guide means 82 composed of a pair of pin elongated holes in the illustrated example or any other guide means.
[0022]
The guide means 82 in the illustrated example also serves as stopper means at both ends of the stroke of the actuating member 8, but it goes without saying that the stopper means and guide means of the actuating member 8 may be specially provided.
[0023]
When the operating member 8 as described above occupies the unlocking position (see FIG. 1), the other end 4b of the locking lever 4 is received in the direction approaching the front plate 11 by receiving the pressing member 5, and the locking lever The engagement of the latch bolt 36 at the one end 4a of 4 with the jaw 36a from the rear is disabled.
[0024]
Further, when the operating member 8 occupies the locking position (see FIG. 2), the operating member 8 does not interfere with the swinging until the operating member 8 reaches the position where the locking lever 4 can be engaged with the latch bolt 36. Since it is retracted, the one end 4a of the locking lever 4 can be swung for engagement with the latch bolt 36. In the closed state, the latch bolt 36 is prevented from being pulled in, and the locking device is locked. It is held in a locked state as a tightening.
[0025]
Next, the operation of the first embodiment according to the present invention will be described.
In FIG. 1, the actuating member 8 has a thumb turn advanced to a front unlocking position by a 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.
[0026]
Therefore, the locking lever 4 cannot swing clockwise in FIG. 1, and when the door 10 is closed, a magnetic repulsive force is generated between the first and second magnet means 61 and 62 by the same magnetic pole. However, since the locking lever 4 cannot be swung in the clockwise direction, which is the engaging direction, by the push member 5, the latch bolt 36 only serves as a temporary tightening.
[0027]
In other words, in the state of 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 action of final tightening, are immovably restrained. The device operates as a temporary lock (empty lock).
[0028]
The operation as a temporary lock (empty lock) in this apparatus is not different from that of a conventional empty lock, and the door 10 can be freely opened and closed by turning or pushing / pulling an operation member such as a lever handle. .
[0029]
On the other hand, in order to switch the unlocked state of FIG. 1 and restrain the latch bolt 36 in the protruding state and keep the latch head engaged with the strike plate 2, it is inserted into a thumb turn or cylinder lock. The cam piece 7 is rotated counterclockwise (counterclockwise) in FIG. 1 with a key, and the actuating member 8 is retracted as indicated by an arrow A in FIG.
[0030]
When the actuating member 8 is retracted to the locking position as shown in FIG. 2, the locking lever 4 that has been restrained from being pivoted clockwise by the actuating member 8 is released from the restraint, so that the door 10 is closed. Therefore, the first and second magnet means 61 and 62 which are in the close state displace the push member 5 inward (rightward in FIG. 2) by the repulsive force of the magnetic poles.
[0031]
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. 2 against the lever spring 42, and one end 4a of the locking lever 4 is The protruding latch bolt 36 occupies a position facing the jaw portion 36a from the rear.
[0032]
Here, the latch bolt 36 is prevented from being pulled in by the operating member, and the lock device is in a locked state as the final tightening.
[0033]
In order to return the locking device to the unlocked state, the actuating member 8 may be advanced to the front unlocking position by a thumb turn or cylinder lock. At that time, the locking lever 4, the pushing member 5, and the first magnet means 61 occupying the locking position are all returned to the unlocking position in FIG. 1 by the pushing operation by the front end portion of the operating member 8.
[0034]
In the locking device according to the present invention, when locking as final tightening when going out, the operating member 8 is released by thumb turn after releasing the hand from the operating member with the door 10 slightly opened by the operating member. Is moved backward to the locked position (see FIG. 3), where the door 10 is closed.
[0035]
Then, the magnetic repulsive force of the 1st and 2nd magnet means 61 and 62 acts, and the latch bolt 36 is restrained by the locking lever 4 in the protrusion state (refer FIG. 2). Such an action is nothing but automatic locking in which locking is achieved without using a key.
[0036]
FIG. 4 partially shows only the second magnet means 61 and the second magnet means 62 in the second embodiment of the present invention. Other configurations are the same as those of the locking device of the first embodiment.
[0037]
In the lock device of the second embodiment, the pair of first magnet means 61 and second magnet means 62 are both one permanent magnet 61a, 62a and two yokes 61b, 62b, and each side shape is, for example, U-shaped. It is made to make.
[0038]
The first magnet means 61 is fixed to the movable pressing member 5 in the same manner as in the first embodiment, but the second magnet means 62 has a counter magnetic pole opposite to the first permanent magnet 61 on the door frame 20 side. It is attached so that it can be changed.
[0039]
In FIG. 4, reference numeral 63 denotes an actuator such as a rotary solenoid provided in the door frame 20, and the actuator 63 supports the second magnet means 62 at the tip of the output shaft 63 a with the gear reducer 64 interposed. Yes.
[0040]
In the locking device of the present invention, basically, at the time of locking as final tightening, the actuating member 8 is retracted to the locking position, and the two magnet means 61 and 62 making a pair are repelled by the same magnetic pole. (See FIG. 2), the locking bolt 4 swung to the locking position can prevent the latch bolt 36 from being pulled.
[0041]
In the second embodiment, the second magnet means 62 can be rotated by 180 ° around the horizontal axis by energizing the actuator 63 with a switch located at a remote position.
[0042]
As a result of this operation, the first and second magnet means 61 and 62 facing each other with the same magnetic pole as shown in FIG. 4 (A) come to face each other with different magnetic poles as shown in FIG. 4 (B). The pushing member 5 is displaced so as to approach the front plate 11 by the attracting action between the magnet means 61 and 62.
[0043]
Then, the locking lever 4 occupying the locking position by the pushing of the pressing member 5 is swung to the unlocking position by the lever spring 42 (see FIG. 1), and the latch bolt 36 in the final tightening state is remotely Will be unlocked.
[0044]
Although not shown, 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 away from the lock body is also another aspect of the present invention. It can be adopted as an embodiment.
[0045]
According to another embodiment, the first and second magnet means opposed to each other with the same magnetic pole at the time of locking by changing the direction of the current passed to the electromagnet as the second magnet means (62). The remote unlocking is achieved in the same manner as in the locking device of the second embodiment.
[0046]
In the locking 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 to prevent the lines of magnetic force from being interrupted or dispersed.
[0047]
【The invention's effect】
The locking device according to the present invention described above is reliable in locking and unlocking operation regardless of its simple mechanism. In addition, automatic locking can be performed by following a specific operation procedure, improving usability. The effects such as can be achieved.
[Brief description of the drawings]
FIG. 1 is a partially longitudinal side view showing a first embodiment of a locking device of the present invention in an unlocked state.
FIG. 2 is a partially longitudinal side view showing the first embodiment in a locked state.
FIG. 3 is a partially longitudinal side view showing the first embodiment with the door opened.
FIG. 4 is an explanatory view seen from the side showing the outline of the first and second magnet means in the second embodiment of the locking device of the present invention, wherein (A) is shown in a locked state; Is shown in an unlocked state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Door 20 Door frame 1 Lock box 11 Front board 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 Actuating member

Claims (1)

A lock device provided with a latch bolt energized in a direction protruding from the front plate of the lock box and a retractor operated by an operating member and retracting the latch bolt into the lock box in a lock box attached to the door. A locking lever pivotally supported in the vicinity of the latch bolt in the lock box so as to be selectively engaged with the latch bolt, and biased toward the non-engagement position side, A door frame which is provided in the vicinity of the front plate so as to be horizontally displaceable, has a first magnet means at the front end and whose rear end is linked to a locking lever, and a door frame in which the first magnet means is aligned when the door is closed. And the second magnet means facing the first magnet means with the same magnetic pole when locked, and the cam piece rotatably supported in the lock box on the indoor side and the outdoor side of the door, respectively. Sam linked The cylinder and the cylinder lock and the thumb turn or the cylinder lock are guided to be able to be displaced between the unlocked position and the locked position via the cam piece, and the locking lever is moved to the latch bolt at the unlocked position. An actuating member that can be restrained in a non-engaged state.

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