JPS6120210Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to locks for sliding doors and single sliding doors, and more specifically, the lock piece rotates only when the sliding door to which the main lock is attached overlaps with the other sliding door (or wall). The present invention relates to a trigger device which can be moved to lock and unlock the lock, and when in a non-polymerized state, the lock piece is prevented from rotating and cannot be locked.

As this type of sliding door lock, an invention such as Patent Application Publication No. 44479 of 1975 is already known. At this time, a magnetic force is generated between the recess formed on the upper periphery of the lock piece (rotation locking piece), the stop pawl that engages with the recess, and the holder of the other sliding door located at a position opposite to the pawl. When the frame body is not polymerized, the recess is engaged with the free-hanging stop claw to prevent the lock piece from rotating, and when the frame body is polymerized, the engagement between the two is released and the lock piece is stopped. It is designed to allow rotation.

However, in this case, since the stop pawl is removably engaged with the lock piece, the stop pawl is
It must be located near the mating lock piece,
Moreover, it must be installed in a narrow space between the front part of the lock box and the lock piece, which is within the range of the magnetic force of the magnet provided on the other sliding door. Due to the mounting position and space, the stop pawl is limited in size and cannot be made large. Therefore, the locking force of the stop claw against the lock piece must be small, and furthermore, the size of the portion of the magnet that is affected by the magnetic force is also small, making operation by the magnetic force unstable. In order to solve this inconvenience, a method of increasing the size of the magnet may be considered, but,
In this device, the stop pawl is directly engaged with and disengaged from the recess formed on the upper edge of the lock piece through the magnetic force acting on the stop pawl, due to the above-mentioned mounting position, etc., and the magnetic force acts on the lock piece. Therefore, since the magnet cannot be made large, the magnetic force must be weak, and the mounting position is also greatly restricted, making the design complicated.

In addition, this method requires the special effort to form a stopping engagement receiving portion on the lock piece, and there is a problem in that this weakens the strength of the lock piece.

This device provides a locking rod at the top or bottom of a slider that is moved up and down by key or thumb turn operations, and a locking member that is removably engaged with the locking rod is pivoted inside the lock box. A magnet is attached to the inner side of the counter wall or the seat of the sliding door at a position opposite to this locking member, and the magnetic force of this magnet causes the lock piece to move into the receiving hole formed in the wall or the seat of the sliding door. When the locking member is aligned with the receiving hole, the locking member releases the engagement with the locking rod to enable rotation of the lock piece, and conversely, when the lock piece is not aligned with the receiving hole, the locking member releases the engagement with the locking rod and allows the lock piece to rotate. It is an object of the present invention to provide a locking device which is constructed so that the engaged state of the locking member and the locking rod is maintained and rotation of the lock piece is prevented, thereby eliminating the disadvantages of the conventional products.

A case in which an embodiment of this invention is attached to a sliding door will be described below with reference to FIGS. 1 to 3.

1 is an inner door, 2 is an outer door, 3 is a lock box for a sliding door lock embedded in the mounting hole of the inner door 1, and a thumb turn 5 is attached to the back plate 4 of the lock box 3.
A cylinder 7 is installed inside the lock box 3 at a position opposite to the thumb turn 5 and extending from the front 6. A slider 8 is interposed between the thumbturn 5 and the cylinder 7, and an elongated hole (not shown) is formed in the side wall of the slider 8 facing the thumbturn, and one end edge of the thumbturn 5 is inserted into this elongated hole. A pin 9 connected to is inserted. The thumb turn 5 is pressed against the side wall of the slider 8 by constantly pressing the pin 9.
A spring 10 is provided to prevent the swinging of the shaft.
By rotating the thumb turn 5 in an arc, the slider 8 is moved up and down.

On the other hand, in order to rotate the cylinder 7 by inserting the key 12 into the cylinder 7 from the outside and move the cylinder 8 up and down, a step is removably engaged with the connecting pin 9 of the thumb turn 5 on the rear end surface of the cylinder 7. A portion 13 is formed. 11a is a seat attached to the outer door 2 and provided with a hole 11 for inserting a key.

In the embodiment, the lock piece 14 consists of two pieces, both of which are pivotally mounted in the lock box 3 by shafts 15 and 16, and both lock pieces 14 have a guide hole 17 in one side and a guide hole 17 in the other. The guide hole 17 is connected with a pin 18 that loosely fits therein, and is connected to the cylinder 8 via a connecting shaft 19 fixed to the other lock piece 14, and the lock piece is moved up and down by the vertical movement of the cylinder 8. 14,14
is made to be freely retractable from the front 6 of the lock box 3, and is locked and unlocked with respect to the receiving hole 24 on the outside door 2 side. Reference numeral 20 denotes a long hole drilled in the lower side of the slider 8, and 21 a stopper that regulates the sliding distance of the slider 8 through the long hole 20 and also restricts the retreating position of the lock piece 14. 22 is a spring attached to the other lock piece 14, and 23 is a seat for causing the lock piece 14 to protrude from the receiving hole 24.

A locking rod 25 is integrally provided at the upper end of the slider 8, and a locking member 27 having an engaging portion 26 with which the locking rod 25 is removably engaged is shafted into the lock box 3. 28, and at least the portion of this locking member 27 facing a magnet, which will be described later, is
Made of magnetic material. On the other hand, a magnet 29 is attached to a position opposite to the locking member 27 on the receiving seat 23 of the sliding door, which is the wallless outer door 2 to be locked and unlocked by the locking piece 14. Lock piece 14
When the locking member 27 is aligned with the receiving hole 24 formed in the receiving seat 23 of the sliding door, which is the wall body or the outer door 2, the locking member 27 is attracted toward the receiving seat 23 by the magnetic force of the magnet 29, and the engaging member 27 is The engagement of the locking rod 25 with the locking member 27 is released, and as a result, the slider 8 becomes free, and when the cylinder 7 is rotated via the thumb turn 5 or the key 12, the lock piece 14 is projected and the outer door is closed. When the opposite lock piece 14 is locked in the receiving hole 24 of the second receiving seat (see Fig. 2), and the opposite lock piece 14 does not match the receiving hole 24 of the sliding door of the other party, the magnetic force of the magnet 29 is Since it does not act on the locking member 27, the locking rod 26 is engaged with the engaging portion 26 of the locking member 27 and the engaged state is maintained, as shown by the solid line in FIG. 14 is prevented from rotating.

In the embodiment, the magnet 2 provided on the seat 23
9 is the N pole, and an S-shaped magnet (not shown) is provided on the side of the locking member 27, so that magnets with different polarities are provided on both sides, and the attractive force when the two overlap is utilized. good. Further, as shown in FIG.
A magnet 29a is provided on the upper part of the locking member 27, while a magnet 29 with the same polarity as the magnet 29a is placed opposite to the receiving seat 23 of the opposite wall or outer door 2. It is also possible to enable the lock piece 14 to rotate by utilizing the magnetic repulsive force of the lock pieces 29a, 29a. That is, when the lock piece 14 matches the receiving hole formed in the seat 23 of the wall body or outer door 2, magnetic repulsion between the magnet 29 provided on the seat 23 and the magnet 29a of the locking member 27 occurs. By force,
Since the upper part of the locking member 27 is rotated counterclockwise in the figure, the locking member 27 and the locking rod 25 are disengaged from each other, and the lock piece 14 can be rotated and locked. On the other hand, if the lock piece 14 does not match the receiving hole, both the magnets 29, 29
a does not work, therefore, the engagement state between the locking member 27 and the locking rod 25 is maintained, and the lock piece 14
Rotation in the protruding direction is blocked and cannot be locked. Note that the slider 8 is not limited to the shape described above, and the specific means for moving the slider 8 up and down using keys or thumb turns can be changed as appropriate. Furthermore, the locking rod 25 is integrally provided not only at the upper part of the slider 8 but also at the lower part thereof, and accordingly, the locking rod 25 is provided integrally with the locking member 27, its shaft 28, and the receiving seat 23 of the sliding door or wall of the other party. A structure may also be adopted in which the attached magnet 29 is also provided at the bottom. The locking rod 25 can be provided separately on the slider 8, and its shape is also arbitrary. The number of lock pieces 14 is not limited to two as in this embodiment, but may be one.

As mentioned above, this invention can be adopted not only for double sliding doors but also for single sliding doors, and in the latter case, the magnet 29 may be provided on the seat of the wall that is the counterpart of the single sliding door.

As mentioned above, this invention provides a locking rod at the top or bottom of the slider that is moved up and down by key or thumb turn operations, and an engaging portion with which the locking rod is removably engaged. A locking member having a locking member is pivotally mounted in a lock box, and a magnet is attached to a position opposite to the locking member on a wall body or a receiving seat of a sliding door on which a lock piece is inserted and retracted to lock and unlock. Due to the magnetic force of the magnet, when the lock piece is aligned with the receiving hole formed in the wall body or the receiving seat of the sliding door, the locking part releases the engagement with the locking rod and prevents the lock piece from rotating. If the lock piece is not aligned with the receiving hole, the engaging state of the locking member and the locking rod is maintained and rotation is prevented. It has the following effects.

That is, the lock piece is not directly locked with a stop claw as in the conventional example, but the lock piece 25 is provided at the upper or lower part of the slider 8, which is separate from the lock piece 14.
Since the lock piece 14 is indirectly locked through the slider 8 by engaging the locking member 27 with the locking member 27, there is no need to form an engagement receiving part for the stop pawl on the lock piece 14, and it is also possible to Therefore, the strength of the lock piece 14 is not weakened.

In addition, the locking rod 25 and its locking member 27 of the present invention
Since it is not necessary to arrange it near the lock piece 14, which has a narrow space, it can be provided at any location with a wide mounting space. Therefore, the locking rod 25 and the locking member 2
7 has no dimensional restrictions and can be large. Therefore, the locking member 27 is exposed to the magnetic force of the magnet 29.
The size of the receiving part of the magnet 29 can also be increased, and
Since a large magnet can be attached, a magnet with strong magnetic force can be obtained, and the locking rod 25 can be securely and firmly engaged with and removed from the locking member 27 by this magnet, and the operation of the slider 8 can be stabilized. .

Further, since the locking rod 25, the locking member 27, and the magnet 29 do not need to be provided near the lock piece 14, which has a narrow space, it is convenient in terms of design and installation. In this manner, the present invention provides highly reliable and safe operation of both the functions of engaging the locking member 27 by the locking rod 25 and releasing the engagement by the magnet 29.

[Brief explanation of the drawing]

The figures all show examples of this invention. Fig. 1 is a longitudinal sectional side view of the main part in the unlocked state, Fig. 2 is a longitudinal sectional view of the main part in the locked state, and Fig. 3 is a longitudinal sectional view of the main part in the unlocked state. -A
FIG. 4 is a longitudinal sectional view of the main part showing another modification. 3...Lock box, 5...Thumb turn, 7...Cylinder, 8...Slider, 14...Lock piece, 19...
...Connection shaft, 23...Socket, 24...Socket hole, 25...
...Latching rod, 27...Locking member, 29, 29a...
magnet.

Claims (1)

[Scope of utility model registration request] A sliding door lock in which a slider housed in a lockbox is moved up and down by the operation of a key or a thumb turn, and a lock piece can be moved out and out of the lockbox via the slider to lock and unlock the lock, the upper part of the slider being Alternatively, a locking rod is provided at the lower part, and a locking member having an engaging portion that is removably engaged with the locking rod is pivotally mounted in the lock box, and the lock piece is protruded and retracted to lock and unlock the lock. A magnet is attached to a position opposite the locking member in the receiving seat of the wall or sliding door of the other party, and the magnetic force of the magnet causes the lock piece to fit into the receiving hole formed in the receiving seat of the wall or sliding door. When they match, the locking member releases the engagement with the locking rod, allowing the lock piece to rotate; conversely, when the lock piece does not match the receiving hole, the locking member releases the locking member from the locking rod, allowing the lock piece to rotate. A sliding door lock characterized in that the member and the locking rod are kept in an engaged state so that rotation of the lock piece is prevented.