JP3324410B2 - Locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device attached to a sliding door such as an entrance, and more particularly to a locking device which can be automatically locked by closing the sliding door.

[0002]

2. Description of the Related Art Conventionally, various locking devices with an automatic lock mechanism have been developed as measures to reduce the burden of locking operation and to prevent forgetting to lock.

[0003] For example, by operating a button attached to a door knob, the door can be opened and closed by operating the knob from the indoor side, but cannot be opened from outside without a key without a key. Locking devices are applied to doors of hotels and apartments.

[0004] Further, in sliding doors, for example,
No. 4-95000 discloses that an abutment sensing bolt is protruded from a door tip toward a door frame side, and the sensing bolt is retracted by closing a sliding door. Is disclosed.

[0005]

However, the above-mentioned auto-lock mechanisms are not only expensive because of their complicated structures, but also inadvertently forget to release the auto-lock. If the door is closed from the outside, there is a problem that the lock is locked by the operation of the auto lock mechanism, and solving such a problem has been a problem of a conventional locking device with an auto lock mechanism. Was.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in a conventional locking device, has a simple structure, can perform automatic locking with a simple operation, and has a burden on the locking operation. It is an object of the present invention to provide a locking device for a sliding door, which can prevent forgetting to be locked and can easily visually recognize whether the automatic locking is in a set state or a released state.

[0007]

According to a first aspect of the present invention, there is provided a locking device having a lock body attached to a sliding door and a strike attached to a door frame, and the lock body is used for a thumb turn and a rotation operation of the thumb turn. In addition to the sickle, which protrudes and retracts and engages a strike attached to the door frame in the protruding state, the door frame further includes a contact member that is in contact with the thumb turn when the sliding door is closed and is separated from the thumb turn. The sickle turns from the immersion position of the sickle to the protruding position based on contact with the contact member by closing the sliding door. The locking device according to claim 2 of the present invention,
A lock body attached to the sliding door and a strike attached to the door frame, the lock body comes out and in response to the thumb turn and the turning operation of the thumb turn, and together with the sickle engaging the strike attached to the door frame in the protruding state, A spring that urges the thumb turn in the operating direction of the sickle, and locking means that holds the thumb turn in the retracted position of the sickle against the elastic force of the spring;
Further, on the door frame side, the sliding door is movably disposed between a position in contact with the thumb turn and a position separated from the thumb turn in a closed state, and a locking means based on contact with the thumb turn by closing the sliding door. It is characterized in that a contact member for releasing the holding state of the thumb turn is attached, and such a configuration in the locking device is a means for solving the conventional problem.

[0008]

The locking device according to claim 3 of the present invention has a lock main body attached to a sliding door and a strike attached to a door frame, and the lock main body comes and goes according to a thumb turn and a rotation operation of the thumb turn. A sickle that engages a strike attached to the door frame in the protruding state, and a contact member that is displaceably attached to the thumb turn. The lock device according to claim 4 of the present invention is characterized in that the thumb turn is rotated from the immersion position of the sickle to the projecting position based on the contact with the member, and the lock body attached to the sliding door, The lock body has a strike attached to the door frame, and the lock body includes a thumb turn, and a sickle which comes out and emerges in accordance with the turning operation of the thumb turn and engages with the strike attached to the door frame in a protruding state. A spring that urges the thumb turn in the operating direction of the sickle, a locking means that holds the thumb turn in the sickle's retracted position against the elastic force of the spring, and a displaceably attached to the thumb turn, protruding from the thumb turn In this state, a contact member for releasing the holding state of the thumb turn by the locking means based on contact with the door frame by closing the sliding door is provided, and such a locking device is characterized in that The configuration is a means for solving the conventional problem.

[0010]

[0011]

The locking device according to the first aspect of the present invention can include a thumb turn for operating the sickle in a protruding state and a retracted state to perform a locking and unlocking operation, and a closing door for closing the sliding door on the door frame side. A contact member that moves between a position that contacts the thumb turn and a position that is separated from the thumb turn in the state, wherein the thumb turn rotates from the immersion position of the sickle to the protruding position based on the contact with the contact member. It has become. Therefore, when the sliding door is closed in a state where the contact member is located at a position where it can come into contact with the thumb turn in the closed state of the sliding door, the thumb turn comes into contact with the contact member, and the thumb turn rotates to the projecting position of the sickle. From
The sliding door is automatically locked, and the automatic locking mode is released by moving the contact member to a position where it cannot contact the thumb turn in advance, and the sliding door is not locked even if closed, and the sliding door can be freely opened and closed, Ingress and egress will be allowed. That is, in the locking device according to the present invention, since the automatic locking is performed by using the contact between the thumb turn and the contact member disposed on the door frame, a complicated automatic locking mechanism is not required, and the locking device is not required. Will be cheaper. And it is obvious at a glance whether the contact member is in a position where it can contact the thumb turn or in a position where it cannot contact, so it can be overlooked whether the locking device is in the automatic locking mode,
The possibility of misunderstanding is extremely small.

A locking device according to a second aspect of the present invention is provided with a thumb-turn and a contact member in the same manner, and urges the thumb-turn by a spring in a projecting direction of the sickle, that is, a locking direction. A locking means is provided for holding the thumb turn in the sickle retracted position, that is, the unlocked position, against the force. Therefore, when the thumb turn is rotated toward the unlocking side against the urging force of the spring, the thumb turn is held at the unlocking position by the locking means, and the sickle remains retracted. So, in the closed state of the sliding door,
When the sliding door is closed in a state where the contact member is positioned at a position where the thumb member can be brought into contact with the thumb turn held at the immersion position of the sickle, the thumb turn abuts on the contact member so that the thumb turn is locked by the holding means. Since the state is released, the thumb turn rotates in the projecting direction of the sickle by the elastic force of the spring, and the sliding door is automatically locked. Further, if the contact member is moved to a position where the contact member cannot contact the thumb turn in advance, the thumb lock does not touch the contact member even when the sliding door is closed, so that the automatic locking mode is released, and the locking according to claim 1 is performed. As in the case of the device, the opening and closing of the sliding door and the ingress and egress of the sliding door are allowed. Similarly, since a complicated automatic locking mechanism is not required, the locking device is inexpensive, and the possibility of overlooking whether or not the locking device is in the automatic locking mode or the possibility of erroneous recognition is extremely low. .

In the locking device according to the third and fourth aspects of the present invention, the thumb turn has a contact member that is displaced, and the contact member protrudes from the thumb turn, thereby extending the substantial length of the thumb turn. When the sliding door is closed in this state, the contact member comes into contact with the door frame, so that the thumb turn is automatically locked by rotating in the protruding direction of the sickle, and the substantial length of the thumb turn is obtained by retracting the contact member. Is reduced, the abutment member does not touch the door frame even when the sliding door is closed, so that automatic locking cannot be performed, and the automatic locking mode is released. That is, the locking device according to these claims is such that the contact member in the locking device according to claims 1 and 2 is provided on the thumb turn instead of being arranged on the door frame side, and in principle, The locking device is basically the same as the locking device according to claims 1 and 2.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings.

Embodiment 1 FIGS. 1 to 4 show a first embodiment of a locking device according to the present invention, in which FIGS.
It is the front view and horizontal sectional view which show the structure of the sliding door and door frame which attached this locking device.

The locking device 1 shown in FIG. 1 has a lock body 3 mounted in a door stop frame of a sliding door 2 and a strike 5 mounted on a door stop of a door frame 4. An abutment member 6 is provided on the indoor side, and the abutment member 6 is slidably mounted in the vertical direction at the same height position as a thumb turn 8 described later.

Further, the lock body 3 has a thumb-turn seat 7 and a thumb-turn 8 on the indoor side of the sliding door 2, and rotates the thumb-turn 8 clockwise, that is, the thumb-turn 8 in FIG.
When the sickle 9 is moved to the position indicated by the imaginary line,
Is pivoted about the sliding door, and when the sliding door is closed, the sliding door is locked by engaging with a strike 5 provided at the door stop. Conversely, the thumb turn 8 is turned counterclockwise. When the sickle 9 is retracted, the sliding door is unlocked when the sickle 9 is retracted, that is, when it is moved to the position indicated by the solid line in FIG.

A cylinder 10 is mounted on the outside of the sliding door 2 as shown in FIG.
The key inserted into the box allows the sickle 9 to be moved in and out, that is, locking and unlocking operations from outside the room.

If the sliding door 2 is closed with the sickle 9 protruding, the sickle 9 may hit the strike 5 and deform the sickle 9 or the strike 5, so that the lock body 3 is used to prevent this. A trigger 11 is provided for detecting the contact state between the sliding door 2 and the door frame 4 by protruding and retracting to the side of the door frame 4,
When the trigger 11 is projected, that is, when the sliding door 2 is opened, the sickle 9 cannot be projected.

FIG. 3 is an enlarged sectional view showing the structure of the thumb-turn 8 and the thumb-turn seat 7. As shown, the thumb-turn 8 is provided with a spring 12 at its shaft. 8 is urged in the locking direction, that is, clockwise direction in which the sickle 9 projects.

Further, an engagement member (locking means) 13 is attached to the thumb-turn seat 7 at an unlocking position of the thumb-turn 8, that is, a retracting operation position of the sickle 9 shown by a solid line in FIG. The engaging member 13 is urged in a protruding direction by a coil spring 13a, and the hemispherical tip portion engages with a hemispherical concave portion 8a formed on the back surface of the thumb turn 8, thereby causing the thumb turn 8 to spring. 12 can be held in the unlocked position against the elastic force of the lock.

FIG. 4 is a front view showing a state in which the sliding door 2 shown in FIG. 1 is closed. By operating the thumb turn 8 in the unlocking direction, the engaging member 1 provided on the thumb turn seat 7 is displayed.
After the thumb turn 8 is held in the unlocked state by 3 and the sliding door 2 is closed in a state where the contact member 6 is slid to the position indicated by the imaginary line in the figure, the upper end of the thumb turn 8 is brought into contact with the contact member 6. The engagement causes the engagement member 13 to be disengaged from the hemispherical concave portion 8a formed in the thumb turn 8, thereby causing the spring 1 to move slightly.
Since the thumb turn 8 rotates in the clockwise direction, that is, in the locking direction by the elastic force of 2, the sickle 9 projects and engages with the strike 5, and the sliding door 2 is automatically locked.

When the sliding door 2 is closed in a state where the contact member 6 is slid to the lower position shown by the solid line, the thumb turn 8 does not touch the contact member 6, so that the thumb turn 8 by the engagement member 13 is used. Is maintained in the unlocked position, and the sliding door 2 can be freely opened and closed and freely enter and exit.

At this time, whether the contact member 6 is in the upper position (automatic locking mode) or in the lower position (automatic unlocking) can be easily visually recognized, and the locking device 1 is in the automatic locking mode. There is almost no chance of overlooking or misunderstanding whether or not the sliding door 2 is automatically locked unexpectedly.

FIG. 5 shows another example of the structure of the contact member 6.
Instead of the slide structure shown in the above embodiment, for example, as shown in FIG. 5 (a), the contact member 6 is pivotally supported on the base 6a, or as shown in FIG. The contact member 6 can be moved between a position where the contact member 6 contacts the thumb turn 8 and a position where the contact member 6 does not contact by causing the contact member 6 to protrude and retract from the position 6a.

Embodiment 2 FIGS. 6 and 7 illustrate a second embodiment of the locking device according to the present invention. FIG. 6 shows the structure of a sliding door and a door frame to which the locking device is attached. It is a front view.

The locking device 1 according to this embodiment is different from the first embodiment in that the contact member 6 provided on the side of the door frame 4 in the first embodiment is replaced by
The contact member 8b is slidably attached to the thumb turn 8, so that the contact member 8b can be displaced (projected) to a position where the contact member 8b contacts the door frame 4 when the sliding door 2 is closed. Except for the contact member 8b, there is no difference in structure and principle from the locking device according to the first embodiment. Therefore, the description is omitted by attaching the same reference numerals as those in the first embodiment.

That is, the locking device 1 according to this embodiment
As shown in FIG. 3, the thumb turn 8 is urged in the locking direction, that is, the clockwise direction in which the sickle 9 protrudes, by the spring 12 provided on the shaft portion thereof, and the engagement member 13 provided on the thumb turn seat 7 is provided. Are formed similarly.

Further, as shown in FIG. 6, a contact member 8b is attached to the thumb turn 8 so as to be slidable in the longitudinal direction of the thumb turn 8, and when the sliding door 2 is closed, the contact member 8b is moved to the thumb turn 8. Door frame 4 when projected from
, And does not come into contact with the door frame 4 in the retracted state.

Then, the thumb turn 8 is operated in the unlocking direction, and the recess 8a of the thumb turn 8 is engaged with the engaging member 13 provided on the thumb turn seat 7, whereby the thumb turn 8 is unlocked.
When the sliding door 2 is closed in a state in which the contact member 8b of the thumb turn 8 is moved to the imaginary line position and the substantial length of the thumb turn 8 is extended, as shown in FIG. The tip of the member 8b abuts on the door frame 4 and the thumb turn 8 slightly moves clockwise, so that the engagement between the engaging member 13 and the recess 8a is released. The sickle 9 protrudes and engages with the strike 5 in the clockwise direction, that is, the locking direction, whereby the sliding door 2 is automatically locked.

At this time, if the contact member 8b is retracted as shown by a solid line in FIG. 7, the contact member 8b does not touch the door frame 4 even when the sliding door 2 is closed. The holding state of the thumb turn 8 at the unlocking position is maintained, and the sliding door 2 can be freely opened and closed and freely enter and exit.

It is obvious at a glance whether the contact member 8b of the thumb turn 8 is in a state of protruding from the thumb turn 8 (automatic locking mode) or in a retracted state (automatic locking release). There is almost no possibility that the lock mode is overlooked or mistaken, and the possibility that the sliding door 2 is automatically locked unexpectedly is extremely small. In addition, in a state where the contact member 8b is protruded, the substantial length of the thumb turn 8 is increased, so that the locking and unlocking operations are facilitated, and the locking device 1 is released from the locked state or the unlocked state. It can be easily confirmed even from the position.

In the above-described embodiment, the example in which the contact member 8b is slidably attached to the thumb turn 8 is shown. However, as shown in FIG. Instead, the abutment member 8b having a U-shaped cross section is rotatably mounted on the support shaft 8c so as to be displaced in a foldable manner around the support shaft 8c, or is protruded and retracted from the thumb turn 8 by a spring. It is also possible.

[0034]

As described above, according to the first aspect of the present invention,
The locking device according to the above is configured as described above, that is, the thumb turn for performing the locking and unlocking operation, and the contact between the contact member provided on the door frame side and the thumb turn projecting from the sickle immersion position (unlock position). (Locking position), it is possible to provide an automatic locking function to the locking device without using a complicated and expensive mechanism, and to determine the position where the contact member contacts the thumb turn and the position where the contact member cannot contact. It is easy to set and release the automatic lock because it can be moved between the doors, and it is easy to visually recognize whether or not the lock is set. , And an extremely excellent effect that the possibility of automatic locking being unexpectedly reduced is extremely small.

According to a second aspect of the present invention, there is provided a locking device having the same thumb-turn and abutting member, and biasing the thumb-turn in a projecting direction of the sickle, that is, a locking direction,
Since the thumb turn is provided with locking means for holding the sickle at the immersion position of the sickle, that is, at the unlocking position, the thumb turn held at the unlocking position by the locking means and the contact member abut against each other. Since the holding state of the thumb turn is released, the sliding door can be automatically locked, the structure is simple, the increase in manufacturing cost can be minimized, and the automatic locking can be set and released by a simple operation. The locking device according to claim 1, wherein the load of the locking operation can be reduced, the forgetting of the locking can be prevented, and whether or not the automatic locking is in the set state can be easily visually recognized. Similar excellent effects are provided.

[0036]

Further, claims 3 and 4 of the present invention
The locking device according to the related art is configured such that the abutting member is displaceably provided on the side of the thumb turn, so that the abutting member is located in a protruding state from the thumb turn, so that the abutting member is closed by closing the sliding door. Claim 1 and Claim 2 wherein the contact with the door frame causes the thumb turn to pivot to the projecting position of the sickle, so that the sliding door can be automatically locked, and the automatic locking can be released by retracting the contact member. The same effects as those of the locking device according to claim 2 can be obtained. Furthermore, in the locking device according to the claims, since the contact member is provided on the thumb turn, the thumb turn is substantially enlarged by making the contact member protrude, so that the thumb turn can be more easily operated. As a result, it is possible to determine whether or not the locking device is in a locked state.

[0038]

[Brief description of the drawings]

FIG. 1 is a front view showing the appearance of a sliding door and a door frame to which a locking device according to an embodiment of the present invention is attached.

FIG. 2 is a horizontal sectional view of the sliding door and the door frame shown in FIG.

FIG. 3 is an enlarged sectional view illustrating a structure of a thumb turn and a thumb turn seat in the locking device shown in FIGS. 1 and 2.

FIG. 4 is a front view for explaining a closed state of the sliding door shown in FIG. 1;

FIGS. 5A and 5B are perspective views showing other structural examples of the contact member, respectively.

FIG. 6 is a front view showing the appearance of a sliding door and a door frame to which a locking device according to another embodiment of the present invention is attached.

FIG. 7 is a front view for explaining a closed state of the sliding door shown in FIG. 6;

FIG. 8 is a side view of a thumb turn showing another structural example of the contact member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking device 2 Sliding door 3 Lock body 4 Door frame 5 Strike 6 Contact member 8 Thumb turn 8b Contact member 9 Sickle 13 Engaging member (locking means)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 65/08 E05C 3/00-3/04

Claims (4)

(57) [Claims] 1. A lock body attached to a sliding door, and a strike attached to a door frame, wherein the lock body comes and goes according to a rotation operation of the thumb turn and engages with a strike attached to the door frame in a protruding state. In addition to the sickle, a contact member is provided on the door frame side movably between a position in contact with the thumb turn and a position away from the thumb turn in a closed state of the sliding door. A locking device wherein a thumb turn rotates from a retracted position of a sickle to a protruding position based on contact with a contact member by closing. 2. A lock body attached to a sliding door, and a strike attached to a door frame, wherein the lock body is engaged with a thumb turn and a strike attached to the door frame in a protruding state when the thumb body is turned in accordance with a rotation operation of the thumb turn. Along with the mating sickle, a spring that urges the thumb turn in the projecting direction of the sickle, and a locking means that holds the thumb turn at the retracted position of the sickle against the elastic force of the spring are provided. The sliding door is movably disposed between a position in contact with the thumb turn and a position apart from the thumb turn in a closed state, and releases the holding state of the thumb turn by the locking means based on the contact with the thumb turn by closing the sliding door. A locking member having an abutting member attached thereto. 3. A lock body attached to a sliding door and a strike attached to a door frame, wherein the lock body comes and goes according to a rotation operation of the thumb turn, and engages with a strike attached to the door frame in a protruding state. And a contact member that is displaceably attached to the thumb turn, and the thumb turn is attached to the contact member that is displaced to protrude from the thumb turn by closing the sliding door. A locking device that rotates from a retracted position to a projected position. 4. A lock body attached to a sliding door, and a strike attached to a door frame. The lock body is engaged with a thumb turn and a strike attached to the door frame in a protruding state when the thumb body is protruded and retracted in accordance with a rotation operation of the thumb turn. A spring that biases the thumb turn in the direction in which the sickle protrudes,
Locking means for holding the thumb turn at the sickle immersion position against the elastic force of the spring, and displaceably attached to the thumb turn,
A locking device comprising: a contact member that releases a holding state of a thumb turn by a locking means based on contact with a door frame by closing a sliding door in a state protruding from the thumb turn.