JP3377600B2 - Magnetic latch lock - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a latch lock which is an empty lock used for doors of general houses and companies.

[0002]

2. Description of the Related Art Generally, a conventional lock lock has only a latch or the like coming in and out, has no dead bolt, and has a fixed door opening / closing direction. Further, as shown in FIG. 8, the latch bolt 1 has a pointed tip in a right triangle shape,
It was spring-biased in the direction of protruding from the lock box. For this reason, when the door 2 is opened, it is always protruding from the end of the door by the spring force. The closing direction of the door has been determined so that the tapered surface of the latch bolt comes into contact with the strike. Further, as shown in FIG. 9, a latch bolt guide plate 3 is provided to prevent the latch bolt 1 from abutting against the frame and damaging it. In this latch bolt guide plate 3, the position of the guide tongue portion 3a was different depending on the opening direction of the door.

[0003]

[SUMMARY OF THE INVENTION Incidentally, Te conventional air lock odor mentioned above, in the state in which the door is opened, the latch bolt projects from the door edge. In other words, since the pointed latch bolt is always protruding, clothes are caught and it is dangerous. When using it for bathroom doors,
It was especially dangerous. Further, since the latch bolts have directionality depending on the opening / closing direction of the door (door opening / closing direction), it is necessary to attach the strike bolt upside down and the latch bolt left / right upside down depending on the opening / closing direction. Further, since there are various frame thicknesses, unless the latch bolt guide plate corresponding to the thickness of the door frame is prepared, the frame will be damaged, which is not preferable in terms of inventory control.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks, and to provide a magnetic latch lock in which the latch bolt does not project to the end face of the door when the door is opened and the latch bolt guide plate is not required on the strike side. It is in.

[0005]

A magnet latch lock according to the present invention has a latch bolt that is arranged so as to project from the lock box on the door side and retractable, and a magnet inside the strike side casing.
And a rotary strike that is arranged so that it can rotate half way,
When the latch bolt faces the rotary strike
The end face of the latch bolt on the front side and the rotary strut.
The magnet that attracts between the front end surface of the
The latch bolt and rotary strike in the same direction.
The latch bolt is moved and the latch bolt is moved to the housing of the strike side.
It is to enter inside and be locked. In addition, the rotating screen
The trike has a latch bolt that is attracted by a magnet.
A rotatable roller that comes into contact with the end face on the front side is provided.
It is that you are.

[0006]

As described above, according to the magnetic latch lock of the present invention, when the latch bolt faces the rotary strike disposed on the strike side, the latch bolt protrudes from the lock box and is air-tightened, so that the latch bolt is opened when the door is opened. Does not stick out.

[0007]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an end view of a door provided with a magnet latch lock according to an embodiment of the present invention, and FIGS. 2 to 4 are vertical cross-sectional views showing an operating state of the magnet latch lock according to an embodiment of the present invention. is there. Here, the magnet latch lock 10 is a latch bolt 1 that is arranged so as to be capable of protruding and retracting from the lock box 11.
2, a spring member 13 that biases the latch bolt 12 in the backward direction, a sliding member 14 that retracts the latch bolt 12, a hub 15 that slides the sliding member 14, and a rotary strike to the strike side. 16 is provided.

The lock box 11, as shown in FIGS.
The front side has an opening 11a through which the engaging portion 12a of the latch bolt 12 comes in and out, and shaft holes 11b into which the rotary shaft portion 15a of the hub 15 is inserted are formed at both end surfaces. Further, as shown in FIG. 1, a screw hole 11c for fixing to the door is formed on the front side.

The latch bolt 12 is, as shown in FIG.
The engaging portion 12a is made of a magnetic material that is attracted to the magnet, and attracts to the magnet of the rotary strike 16 that is arranged oppositely. Further, a part of the latch bolt 12 may be made of a magnetic material. Further, the latch bolt 12 is provided so as to be semi-rotatable with respect to the lock box 11 by a shaft 17, and an operating arm 12b is formed substantially at a right angle to the engaging portion 12a. Furthermore, the operating arm 1
An operation pin 18 that abuts the sliding member 14 is fixed near the tip of 2b. Further, the latch bolt 12 is urged to rotate about the shaft 17 by the spring member 13 in the direction of retracting from the opening 11a.

The sliding member 14 slides on the lock box 11 in the directions of arrows A and B along the guide grooves 19, 20 and the like.
The lower end 14a of the sliding member 14 is arranged at a position where it can come into contact with the operation pin 18 described above. The sliding member 14 is arranged so that the flanges 14b and 14b contact the arms 15b and 15c protruding to the left and right of the hub 15, respectively.

The hub 15 has a shaft hole 1 formed in the lock box 11.
It is rotatably attached to 1b, and a spindle shaft of a grip ball, a lever handle, etc. is inserted into the shaft hole 11b and is half-turned to the left and right. Even if the hub 15 is rotated in either the left or right direction, one of the arms 15b and 15c abuts the flange 14b of the sliding member 14, and the sliding member 14 is moved by the arrow A.
Pull down in the direction.

The rotary strike 16 is shown in FIG.
In addition, the shaft 2 provided at the lower position in the concave housing 22 that is fixed with screws to the frame portion facing the door when the door is closed.
It is rotatably supported in half. Further, the rotary strike 16 can be freely rotated to a position above the shaft 23 on the front side.
A roller 24 between the shaft 23 and the roller 24
Magnets 25 are each arranged to have, closed by a door latch <br/> the roller 24 against the Chiboruto 12 abutment and the magnetic
Stone 25 sucks. Furthermore, the front side of the rotary strike 16
The end surface of is urged by the coil spring 26 in a direction flush with the front surface of the housing 22. Here, the spring force of the coil spring 26 is configured to be weaker than the attraction force of the magnet 25.

Next, the operation of the magnet latch lock 10 configured as described above will be described. First, when the door is opened, the latch bolt 12 is urged by the spring member 13 in the direction of retracting into the lock box 11. Therefore, the latch bolt 12, Do not protrude from the sides of the door
Yes . Therefore, there is no possibility that the latch bolt 12 will be caught on clothes or the like.

Next, when the door is closed as shown in FIG. 2, as shown in FIG. 3, with respect to the rotary strike 16 in which the latch bolt 12 is vertically positioned, the spring member is centered around the shaft 17.
Rotate in the direction of protruding from the lock box 11 against the biasing force of 13
The front end surface of the engaging portion 12a is attached to the roller 24.
It comes into contact with each other and is attracted by the magnet 25 at an angle α. Engagement part of the latch bolt 12 attracted to the magnet 25
As shown in FIG. 4, 12a is a front side of the engaging portion 12a.
In order to narrow the gap between the end surface of the magnet and the end surface of the magnet 25 ,
Further, it rotates in a direction projecting from the lock box 11 and enters the housing 22.

[0015] In response to this, the rotation strike 16, this
With the magnet 25 provided on it , coil around the shaft 23
From the front side of the concave housing 22 against the biasing force of the spring 26
It turns to the back side and moves backward. As shown in FIGS.
As described above, the latch bolt 12 and the rotary strike 16
Is the center of the shaft 17 and the shaft 23 in the figure.
Rotate counterclockwise to move. Then, the engaging portion 1
The roller 24 that is in contact with the front end surface of the 2a is
It rotates appropriately according to the counterclockwise rotation state. With the above operation, the engaging portion 12a of the latch bolt 12 is adsorbed to the rotary strike 16, and is engaged in the strike (case 22) to lock the door.

When opening the door, turn the door knob to rotate the hub 1
2, the sliding member 14 is moved in the direction of arrow A as shown in FIG. 2, and the operating arm 12b is pushed down via the operating pin 18, so that the engaging portion 12a of the latch bolt 12 is placed in the lock box 11. Retreat. With this operation, the door can be opened.

[0017] FIGS. 5-7, shows another embodiment of the present invention. Here, the magnetic latch lock is a lock box 30.
A latch bolt 31 that is arranged so as to project from and retract
Spring member 32 for urging the latch bolt 31 in the backward direction
A hub 33 for retracting the latch bolt 31 and a rotary strike 34 having a magnet on the strike side. The latch bolt 31 is arranged so as to linearly project from the lock box 30 and retract. .

The latch bolt 31 is also rotated in either direction by the arm 33a, 33 b formed in the hub 33, it is configured to retract the flange 31a, in contact with 31b. Further, the rotary strike 34 is rotatably supported by the shaft 35 as well as the spring 3 as in the first embodiment.
6 is urged in the protruding direction. However, since the opening 40 of the front plate of the strike is smaller than the rotary strike 34, it does not project to the outside.

Further, the rotary strike 34 has a magnet 37 and is configured to attract the latch bolt 31.

In the case of the above construction, the latch bolt 3
Since No. 1 moves linearly, the size of the magnet latch lock can be reduced. Further, the sliding member becomes unnecessary, and the number of parts can be reduced. The present invention is not limited to the above embodiments, and various design changes can be made based on the technical idea of the present invention.

[0021]

[Effect of the Invention] As described above in detail, according to the magnetic latch lock according to the present invention, protruding from the lock box door side 且
One and retractably disposed latch bolt, the strike side
A rotating sleeve that has a magnet inside and is rotatably mounted halfway.
A trike and the latch bolt is
The front end face of the latch bolt when facing the
And the suction action between the front end face of the rotary strike
By the magnet, the latch bolt and the rotary strike
Like moves in the same direction and the latch bolt moves
It enters the housing on the side of the trike and is locked in the air. When the latch bolt arranged on the door side confronts the rotary strike arranged on the strike side, it projects from the lock box due to the attraction force of the magnet, and the latch bolt attracted by the magnet is
Enter the enclosure to close the gap. Therefore, the rotation strike
By the magnet of the rotary strike arranged on the front side of the like
The latch bolt is securely attracted and the latch
The bolt and rotary strike are moved in the same direction and the latch
Insert the bolt deep into the housing from the front side to the back side.
You can Further, since it is air-tightened in this way , the pointed latch bolt does not project when the door is open, which is safe for use.

Further, it is not necessary to prepare a strike corresponding to the thickness of the door frame, which is excellent in inventory management.

[Brief description of drawings]

FIG. 1 is an end view of a door provided with a magnetic latch lock according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing an operating state of the magnet latch lock according to the embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing an operating state of the magnet latch lock according to the embodiment of the present invention.

FIG. 4 is a longitudinal sectional view showing an operating state of the magnet latch lock according to the embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view showing an operating state of the magnet latch lock according to the embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view showing an operating state of the magnet latch lock according to the embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view showing an operating state of the magnet latch lock according to the embodiment of the present invention.

FIG. 8 is a perspective view showing a latch bolt which is an example of a conventional blank lock.

FIG. 9 is a plan view showing a latch bolt which is an example of a conventional air lock.

[Explanation of Codes] 10 Magnet Latch Lock 11
Lock box 11a opening 11b
Shaft hole 11c Screw hole 12
Latch bolt 12a Engaging portion 12b
Actuating arm 13 Spring member 14
Sliding member 14a Lower end 14b
Flange 15 Hub 15a
Rotating shaft 15b, c Arm 16
Rotary strike 17 axis 18
Operating pin 19,20 Guide groove 21
Hub hole 22 Case 23
Shaft 24 Roller 25
Magnet 26 Coil spring 30
Lock box 31 Latch bolt 32
Spring member 33 Hub 34
Rotary strike 35 shaft 36
Spring 37 Magnet 40
Aperture

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Claims (2)

(57) [Claims] 1. A latch bolt, which is arranged so as to project from the lock box on the door side and is retractable, and a magnet in the strike-side casing, which is arranged so as to be semi-rotatable.
And the latch bolt faces the rotary strike.
The end face of the latch bolt on the front side and the rotary strut.
The magnet that attracts between the front end surface of the
The latch bolt and rotary strike in the same direction.
Moved, the latch bolt enters the strike-side housing.
The magnet latch lock is characterized in that it is locked in place . 2. A magnet is attached to the rotary strike by a magnet.
Rotated to abut the front end face of the latch bolt
2. The magnet latch lock according to claim 1, wherein the magnet latch is provided.