JP2003253943A - Latch lock for sliding doors - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a latch lock for sliding doors, which can automatically lock the sliding doors only by closing the same, to thereby simplify locking operation of a sliding door apparatus. <P>SOLUTION: The latch lock 1 for the sliding doors is formed of a seat 3, a casing 12, a latch member 15, an energizing member 16, a locking mechanism 17, and an operating member 18. The seat 3 can be mounted on an indoor side of an outdoor-side sliding door 2. The casing can be mounted on a stile 5 of an indoor-side sliding door 4. The latch member 15 is housed in the casing 12 so as to be linearly protrudable/withdrawable in indoor/outdoor directions, and has an inclined cam surface 13 opposed to the seat 3, at a protruding edge 14 thereof. The energizing member 16 is housed in the casing 12, for always energizing the latch member 15 toward the outdoors. The locking mechanism 17 is arranged in the casing 12 so as to be switched to an unlocking state in which the latch member 15 is held in a withdrawn position against the energizing member 16, and a locking state in which the holding of the latch member 15 is released. The operating member 18 can switch the states of the locking mechanism 17 from outside the casing 12. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch lock of a sliding door used for simultaneously locking both indoor and outdoor sliding doors.

[0002]

2. Description of the Related Art For example, a sliding door device made of an aluminum sash or the like which constitutes a window or entrance of a building is constructed by arranging both indoor and outdoor sliding doors on a door frame so that both sliding doors can travel freely. ing. As a locking device for locking both the indoor and outdoor sliding doors at the same time, a crescent lock or a sickle lock is generally used. Among them, the Crescent lock locks both sliding doors by hooking a lock claw with a lever rotatably provided on the vertical frame of the indoor sliding door to a receiving metal fitting fixed to the vertical frame of the outdoor sliding door. It is a thing.

As the sickle lock, a sickle latch having a key insertion portion is rotatably mounted in a casing fixed to a vertical frame of the indoor sliding door, and the sickle latch is rotated by the key to open the outdoor sliding door. It is known that both sliding doors are locked by being hooked on a receiving seat formed on the inner crosspiece (see, for example, Japanese Patent Laid-Open No. 2000-129989).

[0004]

In the above-mentioned conventional crescent lock or sickle lock, the lock claws or sickle latches with levers are rotated around the horizontal axis with respect to the vertical frame of the indoor sliding door so that the lock claw and the sickle latch can be retracted from the vertical frame. These lock claws and sickle latches do not have the function of moving in and out in conjunction with the movement of the sliding door because they are only pivotally attached to the.

Therefore, in order to lock both sliding doors with the conventional lock, the sliding door is closed with the lock claw and the sickle latch always in the unlocked position, and then the lock claw and the sickle latch are locked with the lever or the key. It is necessary to perform a lock operation for rotating to a position, and in this respect, there is a drawback that the lock operation for the sliding door device is complicated. In other words, in the conventional lock, it is necessary to rotate the lock claw and the sickle latch to the lock position in order to lock the sliding door device, so that the locking operation for the sliding door device is complicated.

On the other hand, in the above-mentioned conventional latch lock, since the operating member (key) of the sickle latch is detachable from the sickle latch, by locking the sickle latch and then removing the operating member, There is an advantage that the locked state is hard to be broken. However, in the above conventional latch lock,
Even when the sickle latch is in the unlocked position, the operating member can be pulled out, so that the user often loses the operating member or forgets where to put it. For this reason, it is often necessary to give up the lock operation for the sickle latch when going out, etc. where it is highly necessary to lock the sliding door device, and in this respect, the function as the original locking device is greatly diminished. There was also.

The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional apparatus, and the first object of the present invention is to lock both sliding doors by automatically closing them. This is to make the lock operation for the sliding door device easier. A second object of the present invention is to make it possible to prevent the deterioration of the locking function due to misplacement of the operating member, etc., while making the locking state difficult to be broken by making the operating member detachable. .

[0008]

The present invention adopts the following means for solving the above first problem. That is, the latch lock of the sliding door according to the present invention is provided with a receiving seat that can be mounted on the indoor side of the outdoor sliding door, a casing that can be mounted on the vertical frame of the indoor sliding door, and a linear retractable door in the indoor / outdoor direction. A latch member housed in the casing and having an inclined cam surface with respect to the receiving seat at a protruding end portion;
A biasing member housed in the casing to constantly bias the latch member toward the outside, and an unlocked state in which the latch member is held in the retracted position against the biasing member;
A lock mechanism provided in the casing so that it can be switched to either a locked state for releasing the holding to the latch member, and an operating member for switching the operating state of the lock mechanism from the outside of the casing. And ,.

In the above latch lock, when the lock mechanism is switched to the unlocked state by the operating member, the latch member is held at the retracted position against the biasing member. Therefore, the latch member does not engage with the receiving seat of the outdoor sliding door, and both sliding doors can be freely opened and closed. On the other hand, when the lock mechanism is switched to the locked state by the operation member, the holding of the latch member by the lock mechanism is released, and the protruding end portion of the latch member is projected to the outside by the biasing member.

At this time, when both the sliding doors are closed, the protruding end portion of the latch member is immediately engaged with the receiving seat, and the both sliding doors are locked. Further, when both or either of the two sliding doors are opened, when the sliding door in the opened state is closed, the inclined cam surface of the latch member rides on the receiving seat during the closing movement.
When the closing of the both sliding doors is completed, the protruding end portion of the latch member engages with the receiving seat, and the both sliding doors are locked.

Thus, according to the latch lock of the present invention,
Even if the lock mechanism is in the locked state when the sliding door is open, both sliding doors are automatically locked just by closing the sliding door, so after locking the sliding door, lock the locking mechanism. There is no need, and the locking operation for the sliding door device can be performed very easily.

On the other hand, the present invention adopts the following means for solving the second problem. That is, the present invention provides a sliding door lock having an operating member for switching the operating state of the lock mechanism from the outside of the casing, wherein the operating member can be detached from the casing when the lock mechanism is in the unlocked state. It is characterized in that it is detachable from the casing when the locking mechanism is in the locked state.

In this case, when the lock mechanism is in the locked state, the operating member can be freely attached to and detached from the casing. Therefore, the locked state is broken by pulling out the operating member after the lock mechanism is locked. Can be difficult. Further, when the lock mechanism is in the unlocked state, the operating member cannot be removed from the casing, so that it is less likely that the user loses the operating member or forgets where to put it.

For this reason, the lock operation for the sliding door lock can be reliably performed when going out or the like where it is highly necessary to lock the sliding door device, and the function as the original locking device is prevented from being diminished. can do.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a latch lock 1 for a sliding door according to the present invention. As shown in the figure, the latch lock 1 of this embodiment can be attached to a receiving seat 3 that can be attached to the indoor side of the outdoor sliding door 2 (glass surface in the illustrated example) and a vertical frame 5 of the indoor sliding door 4. The lock device body 6 is provided.

Of these, the receiving seat 3 is provided with a plastic mounting plate 7 formed in a substantially square shape, and a receiving frame portion 8 integrally projecting from the surface of the plate 7, and this receiving frame portion is provided. In the center of 8, a latch member 1 described later is provided.
A lock hole 9 into which the protruding end 14 of No. 5 is fitted is formed. The mounting plate 7 is attached to the glass surface of the outdoor sliding door 2 via a double-sided tape (not shown) provided on the back surface thereof. In addition, in order to prevent the edge portion of the lock hole 9 from being damaged due to wear, on the indoor side surface of the receiving frame portion 8,
A steel reinforcing plate 10 is fixed. Further, the back surface of the mounting plate 7 can be provided with a crime prevention display such as "no entry" or "police station".

On the other hand, the lock device main body 6 is used for the indoor sliding door 4
A casing 12 attachable to the vertical frame 5 and a latch member housed in the casing 12 so as to be linearly retractable in the indoor / outdoor direction and having an inclined cam surface 13 with respect to the receiving seat 3 at a projecting end portion 14. 15 and this latch member 15
And an urging member 16 housed in the casing 12 so as to constantly urge the urging force to the outside.

The lock device body 6 is switched between an unlocked state in which the latch member 15 is held in the retracted position against the biasing member 16 and a locked state in which the latch member 15 is released from holding. A lock mechanism 17 is provided in the casing 12 so as to be freely movable, and an operation member 18 for switching the operating state of the lock mechanism 17 from the outside of the casing 12.

As shown in FIGS. 1 and 2, the casing 12 is made of a die-cast hollow box body which is long in the vertical direction, and has a case where the upper and lower ends have screw-fastening portions for the vertical frame 5 and the outside of which is open. Main body 20 and this case main body 2
It is composed of a lid member 21 that closes the opening 0. In addition, from the lower part of the indoor side wall of the case body 20,
A key insertion hole 22 is formed which is a long hole that is long in the lateral direction for inserting the key portion 35 of the operation member 18.

The latch member 15 is a slide part 23 housed in the upper part of the case body 20 so as to be linearly slidable in the indoor and outdoor directions, and the outside of the slide part 23 (left side in FIG. 1). Projecting end 1 that is integrally projected from the
4 and. The urging member 16 is composed of a coil spring, one end of which is connected to the inner surface of the outdoor side wall of the case body 20 and the other end of which is connected to the indoor side (the right side in FIG. 1) of the slide portion 23. The latch member 15 is always biased to the outside by the elastic restoring force of the spring.

As shown in FIG. 2, the inclined cam surface 13 formed on the projecting end portion 14 of the latch member 15 gradually moves toward the indoor side (FIG. 2) toward the closing side (the right side in FIG. 2) of the indoor sliding door 4. The lower side) is inclined toward the direction. Therefore, when the outdoor sliding door 2 is moved to the left side from the state shown in FIG. 2 in which the outdoor sliding door 2 is opened and is closed, the inclined cam surface 1 of the protruding end portion 14 is in the middle of the closing movement.
3 contacts the edge of the receiving frame portion 8, and the latch member 15 is retracted toward the inside of the room by the cam action of the inclined cam surface 13.

As shown in FIG. 1, the lock mechanism 17 of the present embodiment is a rotary operation member housed inside the case main body 20 inside the lower chamber so as to be rotatable about an axial center in the indoor and outdoor directions. 24, a release slider 25 housed outside the lower chamber in the case body 20 so as to move up and down in conjunction with the rotational movement of the rotary operation body 24, and the release slider 25 is always removed from the latch member 15. The return spring 26 is a coil spring that urges the coil spring in the direction (downward in the illustrated example).

Of these, the rotating operation body 24 is a columnar body whose axial direction is shorter than the diametrical direction and is rotated in the unlocking direction (direction of arrow A in FIG. 1). The spiral cam 27 that increases the size is provided on the indoor side surface.
A support shaft 28 is provided at the center of the rotary operation body 24 on the indoor side, and an end of the support shaft 28 is rotatably inserted into the lid member 21.

The release slider 25 is made of a thick plate material having an escape groove 29 of the support shaft 28 in its lower portion, and a cam projection 30 that abuts the outer peripheral cam surface of the spiral cam 27 on the outdoor side surface of the slider 25. Are projected integrally. Therefore, as shown in FIG. 1, when the rotating operation body 24 rotates in the unlock direction (arrow A direction), the spiral cam 2
The cam action of 7 causes the release slider 25 to move upward (in the direction of arrow B).

An upwardly extending arm portion 31 is integrally provided on the upper surface of the release slider 25, and a portion of the slide portion 23 of the latch member 15 located immediately above the arm portion 31 has an outdoor side. The release cam surface 32 is formed so as to incline upward as it goes toward. For this reason,
When the release slider 25 moves upward, the upper end of the arm portion 31 contacts the release cam surface 32 and pushes it upward,
Due to the cam action of the release cam surface 32, the latch member 1
5 is to be immersed in the casing 12.

As shown in FIGS. 1 and 2, in the operating member 18 of the present embodiment, a rotary shaft portion 34 is integrally projected from the tip of the knob portion 33, and the tip of the rotary shaft portion 34 is provided. Is formed by integrally projecting the key portion 35.
The key portion 35 is composed of a plate body having an oblong oval shape that is substantially the same as the key insertion hole 22, and is connected to the tip of the rotary shaft portion 34 so as to project in a radially eccentric direction of the rotary shaft portion 34. Has been done.

On the other hand, on the inner side surface (lower side surface in FIG. 2) of the rotary operation body 24 of the lock mechanism 17, a horizontally elongated elliptical key fitting groove 36, which is substantially the same as the key insertion hole 22, is formed.
The rotation axis of the rotation operation body 24 is arranged at a position eccentric to the one end side (the right side in FIG. 2) from the center of the key fitting groove 36 in the longitudinal direction, and the key fitting groove 36 is The lock mechanism 17 is arranged at a position matching the key insertion hole 22 only when the lock mechanism 17 is in the locked state (the state shown in FIGS. 1 and 2).

Therefore, when the lock mechanism 17 is in the locked state (the state shown in FIGS. 1 and 2), the operating member 18 of this embodiment is attachable to and detachable from the casing 12 through the key insertion hole 22. However, when the lock mechanism 17 is in the unlocked state (when the rotating operation body 24 is rotated in the unlock direction from the state shown in FIGS. 1 and 2), the operation member 18 fitted in the key fitting groove 36. The key portion 35 does not coincide with the key insertion hole 22 and cannot be removed from the casing 12.

Next, a method of using the latch lock 1 according to this embodiment and its operation will be described. First, when the lock function of the latch lock 1 is not required, the key portion 35 of the operation member 18 is inserted into the key insertion hole 22 and the operation member 1 is inserted.
The rotating operation body 24 of the lock mechanism 17 may be rotated in the unlocking direction (direction A in FIG. 1) by means of 8. Then,
By the cam action of the spiral cam 27 that rotates together with the rotating operation body 24, the release slider 25 moves upward against the return spring 26, and the lock mechanism 17 is switched to the unlocked state.

At this time, the arm portion 3 of the release slider 25
1 pushes the release cam surface 32 of the latch member 15 upward, so that the latch member 15 retracts into the casing 12 against the biasing member 16 and the arm portion 3
1 is the stepped portion 15A of the latch member 15 (see FIG. 1).
The immersive state is maintained by being caught on. Therefore, when the lock mechanism 17 is in the unlocked state, the latch member 15 serves as the receiving seat 3 of the outdoor sliding door 2.
Both sliding doors 2 and 4 can be freely opened and closed without engaging with.

In the unlocked state, as described above, the key portion 35 of the operation member 18 fitted in the key fitting groove 36 does not coincide with the key insertion hole 22, so that the operation member 18 is casing. Cannot be removed from 12. Therefore, the user may lose the operation member 18,
The possibility of forgetting where it is placed can be greatly reduced.

On the other hand, when the lock function by the latch lock 1 is required, the rotating operation body 24 of the lock mechanism 17 is operated by the operation member 18 mounted on the casing 12.
May be rotated in the locking direction (the direction opposite to the A direction in FIG. 1). Then, the release slider 25 moves downward by the cam action of the spiral cam 27 rotating with the rotating operation body 24 and the urging force of the return spring 26, and the lock mechanism 17 is switched to the locked state.

In this case, the arm portion 3 of the release slider 25
Since 1 is completely separated from the latch member 15, the latch member 15 slides to the outside of the room by the urging force of the urging member 16, and the protruding end portion 14 thereof is in a state of protruding to the outside of the casing 12. At this time, when both the sliding doors 2 and 4 are closed, the protruding end portion 14 of the latch member 15 is
Is immediately fitted into the lock hole 9 of the receiving frame portion 8, and the both sliding doors 2 and 4 are locked.

On the other hand, for example, as shown in FIG.
When the outdoor sliding door 2 is opened (the indoor sliding door 4 may be open), when the opened outdoor sliding door 2 is closed, the latch member 15 of the latch member 15 is closed during the closing movement. The inclined cam surface 13 abuts on the edge of the receiving frame portion 8 and rides up, and the protruding end portion 14 of the latch member 15
At the time when is aligned with the lock hole 9 of the receiving frame portion 8, the projecting end portion 14 is fitted into the lock hole 9, and the sliding doors 2 and 4 are locked.

In the locked state, as described above, the key portion 35 of the operating member 18 fitted in the key fitting groove 36 coincides with the key insertion hole 22.
Is detachable from the casing 12. Therefore, it is possible to make it difficult to break the locked state by pulling out the operation member 18 after the lock mechanism 17 is locked.

As described above, according to the latch lock 1 of this embodiment, even if the lock mechanism 17 is in the locked state when the sliding door 2 is opened, the sliding doors 2 can be closed by simply closing the sliding door 2. , 4 is automatically locked, so
It is not necessary to perform the lock operation for the lock mechanism 17 after closing the sliding door 2, and the lock operation for the sliding door device can be performed very easily.

The present invention is not limited to the above embodiment. For example, the casing 12 may be incorporated in the vertical frame 5 of the indoor sliding door 4, and the receiving seat 3 may be incorporated in the vertical frame 2A of the outdoor sliding door 2 accordingly. Also,
The latch lock 1 of the present invention can be provided in addition to the sliding door device provided with the crescent lock as the main locking, and thus can be used as an auxiliary locking device of the sliding door.

[0038]

According to the present invention, since both sliding doors are automatically locked by simply closing them, the sliding door device can be locked more easily. Further, according to the present invention, it is possible to prevent the locking function from being deteriorated due to forgetting to put the operating member, etc., while making the locking state difficult to break by making the operating member detachable.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a sliding door device equipped with a latch lock of the present invention.

FIG. 2 is a plan sectional view of a sliding door device to which the latch lock is attached.

FIG. 3 is a perspective view of a sliding door device to which the latch lock is attached.

[Explanation of symbols]

1 latch lock 2 outdoor sliding doors 3 pedestal 4 indoor sliding doors 5 vertical frames 12 casing 13 Inclined cam surface 14 protruding end 15 Latch member 16 Biasing member 17 Lock mechanism 18 Operation member

Claims (2)

[Claims] 1. A receiving seat (3) attachable to the indoor side of an outdoor sliding door (2), a casing (12) attachable to a vertical frame (5) of the indoor sliding door (4), and a straight line in the indoor / outdoor direction. A latch member (15) that is housed in the casing (12) and has an inclined cam surface (13) with respect to the receiving seat (3) at a projecting end portion (14) so that it can be retracted and retracted. A biasing member (16) housed in the casing (12) for constantly biasing the member (15) to the outdoor side.
And an unlocked state in which the latch member (15) is held in the retracted position against the biasing member (16) and a locked state in which the latch member (15) is released from holding. A lock mechanism (17) provided inside the casing (12) so that the operating state of the lock mechanism (17) is switched from the outside of the casing (12). The latch lock of the sliding door characterized by having. 2. The operating member (18) has a lock mechanism (1).
When the device (7) is in the unlocked state, it cannot be removed from the casing (12), and when the locking mechanism (17) is in the locked state, it is detachable from the casing (12). The latch lock for the sliding door described in 1.