JP3354772B2 - Door locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cupboard, a closet,
More specifically, the present invention relates to a door locking device provided on a door of other furniture (including a door of a building in this specification, which may be simply referred to as a “door”). And a locking device body movably disposed between the storage position and the projecting position, the door locking device comprising: The present invention relates to a door locking device having an opening prevention function for preventing a door from being opened.

[0002]

2. Description of the Related Art Clothes closets, cupboards, and other furniture are provided with one door at the opening thereof via a hinge, or two doors are attached to each other so as to be openable and closable. . And in order to easily and reliably open and close the door, a handle is provided on the door,
A latch device for a door comprising a latch device main body disposed so as to be able to move a latch bolt between a projecting position and a storage position and to be urged in the direction of the projecting position is provided with a door and a furniture body, or a door. Each door is attached to the door, and when a force greater than the locking force of the latch bolt acts on the door, the latch bolt is moved from the projecting position to the storage position to open and close the door.

[0003]

According to the conventional locking device of this type, when the door receives a large vibration due to an earthquake or the like and a force greater than the locking force of the latch bolt acts on the door, the door is spontaneously moved. The door may be opened, the door may be damaged, or the stored articles may pop out and the articles may be damaged. It is conceivable to attach a key (deadbolt) to the door to cope with such a large vibration caused by an earthquake or the like, but unlocking and locking the door each time the door is opened and closed is troublesome and troublesome. It is also conceivable to forget to lock.

[0004] The present invention provides a door locking device that prevents a cupboard, a closet, and other furniture doors from being opened even when subjected to a large vibration due to an earthquake or the like, and that does not require any trouble to open and close the doors. The purpose is to do.

[0005]

In order to achieve the above object, a door locking device according to a first aspect of the present invention includes a latch bolt having an inclined surface that comes into contact with a receiving seat provided opposite to the locking bolt body. The door locking device is provided so as to be movable between the protruding position and the storage position, and biased in the direction of the protruding position.
A latch bolt having an inclined surface formed to be inclined with respect to the opening and closing direction of the door and a right-angled surface formed at a right angle; and the latch bolt can swing between a protruding position and a storage position. A sliding body which is slidably inserted into the locking device main body while being urged in the direction of the latch bolt while being supported at the tip end for locking the sliding body so as not to slide.
An operation lever formed with a locking piece for locking the sliding body , wherein the latch bolt is configured to be movable from a protruding position to a storage position by swinging in only one direction, and the right-angled surface is provided as a seat. By moving from the protruding position to the storage position by abutting and swinging, operating the operation lever to release the lock to the sliding body, and contacting the inclined surface of the latch bolt with the receiving seat, The latch bolt is slid together with the sliding body to move from the protruding position to the storage position.

In the door locking device according to the first aspect of the invention, when the door is closed, the right-angled surface of the latch bolt is brought into contact with the seat to swing the latch bolt and move it from the projecting position to the storage position. After that, the door can be automatically locked by engaging with the seat. When the door is opened, the operation lever is operated to release the locking of the sliding body by the locking piece, and then the latch bolt is slid together with the sliding body by contacting the inclined surface of the latch bolt with the receiving seat. It can be moved from the protruding position to the storage position. In this case, unless the operation lever is operated, the locking of the sliding body by the locking piece is not released, the sliding body does not slide, and the latch bolt can swing only in one direction from the projecting position. Even if the inclined surface of the latch bolt abuts on the seat, the latch bolt does not swing, and the latch between the latch bolt and the seat is not released. The door is not opened even if received.

Further, in the door locking device according to the second aspect of the present invention, the latch bolt having an inclined surface which comes into contact with the oppositely provided receiving seat is moved between the protruding position and the storage position on the locking device main body. A locking device for a door, which is disposed so as to be capable of being urged in the direction of the protruding position, wherein the locking device main body has an inclined surface formed to be inclined with respect to the opening and closing direction of the door and a right angle formed at a right angle. A latch bolt having a surface, an elongated hole through which the latch bolt shaft is slidably inserted, and a latch bolt support surface for biasing and supporting the latch bolt in the direction of the protruding position.
A first support having a support piece, a support piece for urging and supporting the axis of the latch bolt in the direction of the protruding position, and supporting the axis for locking the latch bolt so as not to swing;
And a locking piece abutting against a contact surface of the latch bolt .
A support, and an operation lever for operating the second support in the direction of the storage position, wherein the latch bolt is configured to be movable from the protruding position to the storage position by swinging in only one direction,
By contacting the inclined surface with the seat, the latch bolt is slid together with each support so as to move from the projecting position to the storage position, and the operation lever is operated to operate the second position.
The latch by the support is released, and the right-angled surface is brought into contact with the seat to swing the latch bolt to move from the projecting position to the storage position.

In the door locking device according to the second aspect of the invention, when the door is closed, the inclined surface of the latch bolt is brought into contact with the seat to slide the latch bolt to move from the protruding position to the storage position. After that, the door can be automatically locked by engaging with the seat. When the door is opened, the operation lever is operated to slide the second support, the latch bolt is released from the second support, and the right-angled surface of the latch bolt is brought into contact with the seat. Thus, the latch bolt can be swung and moved from the protruding position to the storage position.
In this case, unless the operation lever is operated, the latching of the latch bolt by the second support is not released, the latch bolt does not swing, and even if the right-angled surface of the latch bolt abuts the seat. Since the latch bolt does not slide, the latch between the latch bolt and the seat is not released, so that it is possible to prevent the door from being opened even when subjected to a large vibration such as an earthquake.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a door locking device according to the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show a first embodiment of a door locking device according to the present invention. The locking device for the door includes a locking device main body 11 attached to the back surface of the door 32 with screws or the like, and a receiving seat 24 attached to the inner side surface of the furniture main body 31 with screws or the like.
Consists of

The latch device main body 11 has a latch bolt 12 having an inclined surface 12a formed to be inclined with respect to the opening and closing direction of the door 32 and a right-angled surface 12b formed at a right angle. A sliding member 15 rotatably supported between the protruding position and the storage position and slidably inserted into the locking device body 20, and a locking piece 17 for locking the sliding member 15 at the tip end. And an operation lever 23 formed.

The latch bolt 12 is urged in the direction of the projecting position by the urging force of the spring 13, and a projection 12 c projecting from the latch bolt 12 is fitted into a guide groove 15 a formed on the inner surface of the sliding body 15. Thus, the latch bolt 12 can be swung only in one direction (the direction of the arrow shown in FIG. 2) from the protruding position, and the right-angled surface 12 b of the latch bolt 12 abuts on the receiving seat 24 to swing the latch bolt 12. Then, it moves from the protruding position to the storage position of the sliding body 19. As shown in FIG. 3, the sliding body 15 is
2, and is urged toward the latch bolt 12 by the urging force of the spring 16, that is, in the direction of the projecting position of the latch bolt 12, and a surface plate 21 that covers the locking device main body 11. Is stopped by. A guide groove 15a for guiding the protrusion 12c protruding from the latch bolt 12 is formed in the sliding body 15,
Hole 15b for inserting shaft 13 that supports latch bolt 12
Drilling. In this case, the guide groove 15a is formed on an arc centered on the hole 15b. The operating lever 23 is urged by the urging force of the spring 18 in the direction in which the sliding body 15 is locked, and is slidably retained by the surface plate 22 that covers the locking device main body 11 and held.

The seat 24 is formed in an L-shaped cross section, and is attached to the inner side surface of the furniture main body 31 with a screw or the like such that the locking piece 24a projects into the opening of the furniture main body 31.

Next, the operation of the door locking device will be described with reference to FIG. When the door 32 is closed, the right-angled surface 12b of the latch bolt 12 is brought into contact with the locking piece 24a of the seat 24, thereby swinging the latch bolt 12 and moving it from the projecting position to the storage position of the sliding member 19. After that, the seat 24
And automatically locks the door 32 (FIG. 4A). When the door 32 is opened, the operation lever 23 is pulled to release the locking of the sliding body 15 by the locking piece 17, and then the inclined surface 12 a of the latch bolt 12 is moved to the locking piece 24 a of the seat 24. , The latch bolt 12 is slid together with the sliding body 15 to move from the protruding position to the storage position in the locking device main body 20 (FIG. 4).
(B)). In this case, unless the operation lever 23 is pulled, the locking of the sliding body 15 by the locking piece 17 is not released, and the sliding body 15 does not slide. The latch bolt 12 is moved in one direction from the protruding position (the direction of the arrow shown in FIG. 2).
The latch bolt 1
The latch bolt 12 does not swing even if the second inclined surface 12a comes into contact with the locking piece 24a of the receiving seat 24. For this reason, the latch between the latch bolt 12 and the locking piece 24a of the seat 24 is not released, and the door 32 is not opened even if it receives a large vibration due to an earthquake or the like.

In the door locking device, the operation lever 23 is pulled to operate the sliding member 15 by the locking piece 17.
However, the present invention is not limited to this, and the sliding member 15 by the locking piece 17 is rotated by operating the operation lever by using a link mechanism or a cam.
Can be released.

FIG. 5 shows a modification of the first embodiment of the door locking device of the present invention. This locking device for the door is used when the mounting position of the latch bolt 12 and the mounting position of the operation lever 23 are separated, for example, when the locking device is mounted on the inner top surface of the furniture body 31. Thus, the locking device body is divided into a locking portion 11a in which the latch bolts 12 and the like are disposed and an operation portion 11b in which the operation lever 23 and the like are disposed, and the sliding member 15 is connected in the middle. It is formed to be long with a rod 15c interposed, and is configured so that the locking portion 11a and the operation portion 11b are connected by the sliding body 15. The rest of the configuration and the operation of the locking device are the same as those of the first embodiment.

6 to 11 show a second embodiment of the door locking device according to the present invention. The locking device for the door includes a locking device main body 41 attached to the back surface of the door with screws or the like, and a seat (not shown) attached to the inner side surface of the furniture main body with screws or the like.

The locking device main body 41 supports a latch bolt 42 having an inclined surface 42a formed to be inclined with respect to the opening and closing direction of the door and a right-angled surface 42b formed at a right angle, and a supporting surface 42d of the latch bolt 42. A first support member 43 having a support piece 43a, and a shaft hole 42 formed in the latch bolt 42;
c and a second support body 45 having a support piece 45c for supporting the shaft 53 inserted into a long hole 41a formed in the locking device body 41 and a locking piece 45d for abutting against a contact surface 42e of the latch bolt 42; , The second support 45 having an inclined surface 47a that engages with the inclined surface 45a formed on the second support 45.
And a control lever 49 integrated with the power transmitting member 47 and a bolt 48. The locking device main body 41 has a shaft hole 42 c formed in the latch bolt 42.
When assembling the long hole 41a through which the shaft 53 is slidably inserted and the locking device main body 41, the bolt 48 that integrates the transmission 47 and the operating lever 49 is inserted into the locking device main body 5.
1. A through hole 41b for insertion into 1 is formed.

The latch bolt 42 is, as shown in FIG.
It has a support surface 42d supported by the support piece 43a of the first support body 43 and a contact surface 42e abutting on the locking piece 45d of the second support body 45, and the latch bolt 42 is pressed by the biasing force of the springs 44 and 46. The first supporting member 43 for supporting the supporting surface 42d and the supporting piece 45c of the second supporting member 45 for supporting the shaft 53 inserted through the latch bolt 42 are configured to be biased in the direction of the projecting position. By contacting the inclined surface 42a of the latch bolt 42 with a receiving seat (not shown), the latch bolt 42 is slid to move from the projecting position to the storage position of the locking device main body 51. As shown in FIG. 8, the first support 43 has a support piece 43a that supports a support surface 42d of the latch bolt 42,
When assembling the locking device main body 41 at substantially the center thereof, a through hole 43b for inserting a bolt 48 for integrating the transmission 47 and the operation lever 49 is formed. The second support 45 is
As shown in FIG. 9, an inclined surface 47 a formed on the transmission 47.
Inclined surface 45a that engages with the support piece 45 that supports the shaft 53
c and a locking piece 45d that abuts against the abutting surface 42e of the latch bolt 42, and a bolt 48 that integrates the transmission 47 and the operating lever 49 is inserted into the locking device main body 41 substantially at the center thereof. Hole 43b is formed. As shown in FIG. 10, the transmission 47 has an inclined surface 47 a that engages with an inclined surface 45 a formed on the second support 45.
And an insertion hole 47b for a bolt 48 screwed to the operation lever 49 is formed, and the operation lever 49 is integrated with the operation lever 49 by the bolt 48. In addition, the transmission body 47 includes the spring 5
The urging force of 0 urges the latching piece 45d of the second support 45 in the direction in which the latching of the latch bolt 42 due to the contact of the latching bolt 42 with the contact surface 42e of the latch bolt 42 is not released. It is slidably retained and held by a surface plate 52 that covers 41.

Next, the operation of the door locking device will be described with reference to FIG. To close the door, use the latch bolt 4
After the second inclined surface 42a is brought into contact with the locking piece (not shown) of the seat, the latch bolt 42 is slid to move from the protruding position to the storage position of the locking device main body 51, and then the seat is received. 11 and automatically locks the door (FIG. 11).
(A)). When the door is to be opened, the operating lever 49 is pulled and the inclined surface 4 of the transmission 47 is transmitted through the transmission 47.
7a and the inclined surface 45a of the second support 45, the second
The support 45 is slid, and the locking piece 45d of the second support 45 is
After the latching of the latch bolt 42 due to the contact of the latch bolt 42 with the contact surface 42e of the latch bolt 42 is released, the right-angled surface 42b of the latch bolt 42 is brought into contact with the locking piece of the receiving seat, so that the latch bolt 42 is reset. To move from the protruding position to the storage position in the locking device main body 51 (FIG. 11).
(B)). In this case, unless the operation lever 49 is pulled, the latching of the latch bolt 42 by the contact of the latching piece 45d of the second support 45 with the contact surface 42e of the latch bolt 42 is not released, and the latch bolt 42 does not swing. Further, since the surface of the latch bolt 42 on the opposite side to the inclined surface 47a is formed by a right-angled surface 42b, the latch bolt 42 slides even if the right-angled surface 42b of the latch bolt 42 comes into contact with the locking piece of the seat. Does not work. For this reason, the locking between the latch bolt 42 and the locking piece of the seat is not released.
The door is not opened even if it receives a large vibration due to an earthquake or the like.

[0021]

According to the door locking device of the first aspect of the present invention, when the door is closed, the right-angled surface of the latch bolt is brought into contact with the seat to swing the latch bolt so that the latch bolt is moved from the projecting position. After being moved to the storage position, the door can be automatically locked by engaging with the seat. When the door is opened, the operation lever is operated to release the locking of the sliding body by the locking piece, and then the latch bolt is slid together with the sliding body by contacting the inclined surface of the latch bolt with the receiving seat. It can be moved from the protruding position to the storage position. In this case, unless the operation lever is operated, the locking of the sliding body by the locking piece is not released, the sliding body does not slide, and the latch bolt can swing only in one direction from the projecting position. Even if the inclined surface of the latch bolt abuts on the seat, the latch bolt does not swing, and the latch between the latch bolt and the seat is not released. The door can be prevented from being opened even if received. Therefore, when the door is closed, the door can be locked automatically, and when the door is opened, the operation lever can be operated to open the door. Since the door is not opened, the opening and closing operation of the door can be performed simply as in the case of the conventional opening and closing of the door, and the door is prevented from being opened when subjected to a large vibration due to an earthquake or the like. be able to.

According to the door locking device of the second aspect of the present invention, when the door is closed, the inclined surface of the latch bolt is brought into contact with the receiving seat, so that the latch bolt is slid to move from the projecting position. After being moved to the storage position, the door can be automatically locked by engaging with the receiving seat. When the door is opened, the operation lever is operated to slide the second support, the latch bolt is released from the second support, and the right-angled surface of the latch bolt is brought into contact with the seat. Thus, the latch bolt can be swung and moved from the protruding position to the storage position. In this case, if you do not operate the operation lever,
Since the latching of the latch bolt by the second support is not released, the latch bolt does not swing, and the latch bolt does not slide even if the right-angled surface of the latch bolt comes into contact with the seat. The latch between the latch bolt and the seat is not released, so that it is possible to prevent the door from being opened even when receiving a large vibration due to an earthquake or the like. Therefore, when the door is closed, the door can be locked automatically, and when the door is opened, the operation lever can be operated to open the door. Since the door is not opened, the opening and closing operation of the door can be performed simply as in the case of the conventional opening and closing of the door, and the door is prevented from being opened when subjected to a large vibration due to an earthquake or the like. be able to.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing a first embodiment of a door locking device according to the present invention.

FIG. 2 is a cross-sectional plan view showing the locking device main body.

FIG. 3 is an explanatory view showing a sliding body of the locking device main body.

FIGS. 4A and 4B are explanatory diagrams of the operation, wherein FIG. 4A shows a state when the door is closed, and FIG. 4B shows a state when the door is opened.

FIG. 5 is a side longitudinal sectional view showing a modification of the first embodiment of the door locking device of the present invention.

FIG. 6 is a plan cross-sectional view showing a locking device body of a second embodiment of the locking device for a door of the present invention.

FIG. 7 is an explanatory view showing a latch bolt of the locking device main body.

FIG. 8 is an explanatory view showing a first support of the locking device main body.

FIG. 9 is an explanatory view showing a second support of the locking device main body.

FIG. 10 is an explanatory view showing a transmission body of the locking device main body.

11A and 11B are explanatory diagrams of the operation, in which FIG. 11A shows a state when the door is closed, and FIG. 11B shows a state when the door is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Latch apparatus main body 12 Latch bolt 12a Inclined surface 13 Axis 15 Sliding body 17 Locking piece 23 Operating lever 24 Receiving 41 Main body of latch device 42 Latch bolt 42a Inclined surface 43 First support 45 Second support 45d Lock Piece 47 transmission 49 operating lever 53 axis

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E05C 1/14 E05C 5/00 E05B 15/10

Claims (2)

(57) [Claims] 1. A latch bolt having an inclined surface which comes into contact with a receiving seat provided opposed thereto is urged to a locking device main body between a projecting position and a storage position and in the direction of the projecting position. A latch bolt having an inclined surface formed to be inclined with respect to the opening / closing direction of the door and a right-angled surface formed at a right angle; and A sliding member pivotally supported between the position and the storage position, and urged in the direction of the latch bolt and slidably inserted into the locking device body; and the sliding member does not slide. To lock the sliding body at the tip for locking
An operating lever formed with a locking piece , wherein the latch bolt is configured to be movable from a protruding position to a storage position by swinging in only one direction, and the right-angled surface is abutted against a seat to swing. By moving the operating lever from the projecting position to the storage position, the operation lever is operated to release the engagement with the sliding body, and the inclined surface of the latch bolt is brought into contact with the seat, so that the latch bolt is moved together with the sliding body. A door locking device wherein the door is slid to move from a protruding position to a storage position. 2. A latch bolt having an inclined surface which comes into contact with a receiving seat provided oppositely, is urged to a locking device main body between a projecting position and a storage position and in the direction of the projecting position. In the door locking device arranged in this manner, the locking device main body includes a latch bolt having an inclined surface formed to be inclined with respect to the opening and closing direction of the door and a right angle surface formed at a right angle, and a shaft of the latch bolt. A slot slidably inserted therein and a latch bolt for biasing and supporting the latch bolt in the direction of the protruding position.
A first support having a support piece for supporting the bets of the support surface, wherein to support urging the shaft of the latch bolt in the direction of the extended position and the latch bolt is locked so as not to swing
Abuts the support piece that supports the shaft of
A second support having a locking piece to be engaged , and an operation lever for operating the second support in the direction of the storage position, wherein the latch bolt is swung only in one direction to move from the projecting position to the storage position. It is configured to be movable, and by contacting the inclined surface with the seat, the latch bolt is slid together with each support to move from the protruding position to the storage position, and the operation lever is operated to operate the second position. A locking device for a door, wherein the locking by the support is released, and the right-angled surface is brought into contact with the seat to swing the latch bolt to move from the projecting position to the storage position.