JP3389008B2 - Door natural opening prevention device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake or a large vibration unless one or both doors of the two doors attached to the furniture such as a bookcase, a cupboard, and a closet are pulled and operated. For example, the present invention relates to a device for preventing the door from opening spontaneously even if a large force is applied from the inside of the door.

[0002]

2. Description of the Related Art Conventionally, in clothes chests, cupboards, bookcases, and other furniture (referred to as "furniture" in this specification), two doors are opposed to each other at their openings to form a double door. Some of them are installed and hinges are attached to each door so that they can be opened and closed. In order to open and close each door easily and securely, a handle is attached to the door, and a locking device such as a magnet type or a spring type is attached to each door so that the door does not open unintentionally. Only when an external force greater than the locking force of the locking device is applied, the locking device is disengaged and the door is opened.Do not open the door unless a force greater than the locking force of the locking device is applied. ing.

[0003]

Even in the case of such a magnet type or spring type locking device, the door does not inadvertently open and close due to the action of the locking device when furniture is stationary, and its purpose is to be solved. Can be achieved. However, when the furniture shakes greatly or falls down due to an earthquake or during transportation, the shaking force of the door causes a force greater than the locking force of the locking device directly on one or both doors or the contents. When it is acted on from the inside by moving it, this force easily disengages the locking device and opens the door.
Stored items may pop out and be damaged. Further, since such a locking device is arranged separately from the latch bolt, there is a problem in that it takes a lot of time to mount it.

According to the present invention, unless the handle attached to the door is opened to open the door of furniture, even if a force larger than the locking force of the locking tool acts on the door due to an earthquake or a large vibration, the door of the furniture is deviated. It is an object of the present invention to provide a device for preventing the door from spontaneously opening so that the door can be easily opened and closed by opening either one of the double door type doors by operating the handle.

[0005]

In order to achieve the above object, a device for preventing the natural opening of a door of the present invention is a door facing the handle provided on the front side of both doors provided in the furniture body in a double door type. In a device for preventing natural opening of a door, in which locking tool bodies are arranged on the back side so as to face each other, each locking tool body has a swingable hook member and a handle for swinging the hook member by pulling the locking tool body. When, and a hook piece for the hook member engage oppositely fastener body disposed respectively, the door is
When closed, the hook piece is positioned closer to the door than the hook member.
Place them so that the tips of both are facing each other with a slight gap
And, when the door is not pivoted hook member is about to be opened, that the said hook member, and this and opposite to the hooks of the fastener body is disposed is configured to engage Is characterized by.

[0006] In the natural opening prevention device of a door of the present invention having the above structure, when the door is not pivoted hook member is about to be opened, and the hook member, and this <br/> counter Even if a large external force acts on the door due to an earthquake, large vibration, etc., the door does not open accidentally and it is safe,
Only by pulling the handle provided on one of the doors, the hook member of the locking tool body does not rotate, and the hook member does not engage with the hook piece of the locking tool body arranged facing each other. You can open the door.

In this case, the latching tool main body is provided with a latch bolt to which a hook member is swingably attached, and a latch bolt abutting portion which engages with the latch bolt of the locking tool body, which is arranged facing each other. Can be configured to include.

As a result, it is not necessary to independently install the latch bolt, and the installation work can be performed efficiently.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a door natural opening preventing device according to the present invention will be described below with reference to the drawings. In the illustrated embodiment, two doors D are provided on the side plates of the opening of a clothes chest, a cupboard, a bookcase, and other furniture main bodies so as to be openable and closable through hinges, and provided in a double door type. Since the method of attaching the door is the same as the conventional method, detailed description thereof will be omitted. Then, the locking tool bodies A are provided on the two doors D at positions facing each other.

The locking device main body A is disposed so as to face the doors D facing each other, and is attached to one door D.
And the locking tool body A attached to the other door D cooperate with each other to prevent the doors D from being opened naturally, and the locking tool bodies A have the same structure. This locking body A is
As shown in FIG. 1 and below, it is attached to the back side of the door D that faces the handle H provided on the front side of the door D.

The locking tool body A is oscillatably urged between the body case 1 and the back plate 2 arranged on the back side of the body case 1 in the direction in which it is projected by the torsion spring 5S. The latch member 3 having the hook member 5 is inserted and retractable, and a hook member operating mechanism for swinging the hook member 5 attached to the tip of the latch bolt 3 by pulling the handle H is arranged. .

As shown in FIGS. 3 to 4, the main body case 1 has a U-shaped latch bolt fitting insertion groove 11 formed at the longitudinal center thereof, and mounting wing pieces are provided on both sides of the latch bolt fitting insertion groove 11. 13 and 14 are formed, a mounting hole 15 is formed in one wing piece 13, and a handle mounting bolt fitting groove 16 is formed in the other box-shaped wing piece 14, and the wing piece 14 is projectingly provided at the end thereof. In this way, the hook piece 12 is integrally formed, and further, the latch bolt abutting portion 19 with which the latch bolt 3 of the locking tool main body A arranged so as to face a part of the wing piece 14 abuts is formed.

As shown in FIG. 5, the back plate 2 has wing pieces 21 and 22 connected to both ends of the lid piece 23 fitted in the opening end of the latch bolt fitting groove 11, as shown in FIG. In addition, the wing piece 21 of one of the main body case 1 is provided with a pin 27 protruding from the wing piece 13 of the main body case 1 so that the wing piece 21 can be fitted into the grooves 17 formed on the back side of the main body case. The pin 25 is fitted in the bored pin fitting hole 18 to be aligned and fixed, and a recess 25 is formed on the inner surface of the lid piece 23. Then, when the back plate 2 is fitted to the main body case 1, the latch bolt fitting groove 11 is formed into a tubular shape having one end face opened, and the latch bolt 3 is fitted and inserted therein.

As shown in FIG. 6, the latch bolt 3 has a latch head abutment portion 19 formed on the mating main body case 1 when the door D is opened and closed by projecting a triangular latch head piece 31 at the tip. A deep recess 32 and a shallow recess 33 are formed on the inner surface of the latch head piece 31 so that the latch head 31 has a deep recess 32.
A shaft hole 34 is formed inside, a shaft hole 35 is formed inside the shallow recess 33, a hook member 5 is formed inside the deep recess 32, and a shallow recess 3 is formed inside.
The cam links 7 are inserted into the respective 3's. As shown in FIG. 7, the auxiliary latch bolt 4 that is opposed to and integrated with the latch bolt 3 is plate-shaped and has the same outer shape as the latch bolt 3, and has a latch head piece 41 at the tip. The latch bolt 3 is formed with the shaft holes 44 and 45 at the same positions as the shaft holes 34 and 35 of the latch bolt 3, and the through hole 42 is formed inside on the side opposite to the latch head piece 41. Before the latch bolt 3 and the auxiliary latch bolt 4 are integrated with each other, the hook member 5 is fitted into the recess 32 of the latch bolt 3, and the cam link 7 is fitted into the recess 33.
The hook member 5 and the cam link 7 are respectively attached to the shaft holes 34, 3
5 is swingably supported via a shaft, and a link 6 is installed between the hook member 5 and the cam link 7, and
Assembled as shown in FIG. 2 to construct a hook member operating mechanism.

As shown in FIG. 11, the hook member 5 has a hook piece 51 formed at the tip and a shaft hole 54 formed at the base side, and the hook member 5 is inserted into the shaft hole 54 through a shaft. While being swingably attached to the latch bolt 3, a recess 52 and a shaft hole 53 are formed on the side surface on the base side to form the recess 5
A plate-like link 6 shown in FIG.
3 to be pivotally attached via a shaft.

As shown in FIG. 8, the cam link 7 has a triangular shape with its corners arcuate, and the shaft holes 7 are formed at these two corners.
2, 75 are formed, and a cam 71 projecting laterally from the main body of the cam link is integrally formed at the remaining corners. One end of the link 6 is pivotally inserted into the shaft hole 72 through the shaft. Then, the shaft is inserted into the other shaft hole 75 and pivotally attached to the latch bolt 3 so as to be swingable, and the cam 71 is inserted into the through hole 42 formed in the auxiliary latch bolt 4.

As described above, the hook member 5, the link 6 and the cam link 7 are incorporated between the latch bolt 3 and the auxiliary latch bolt 4, and the latch bolt 3 is latched in the main body case 1 as shown in FIG. Insert the latch bolt into the bolt fitting groove 11 and attach the back plate 2 to attach the latch bolt to the body case 1.
It can slide inside. In this case, the spring S is inserted between the side wall of the latch bolt fitting groove 11 and the hole 36 of the latch bolt 3.
The latch bolt 3 is urged by this spring pressure so that the tip portion of the latch bolt 3 always projects from the tip of the case main body by the spring pressure so as to project and retract when the door is opened and closed.

In addition, the box-shaped wing piece 14 of the main body case 1
The handle mounting bolt 10 penetrates between the groove 17 of the base plate and the wing piece 22 of the back plate 2, and swings the hook member 5 arranged at the tip of the latch bolt 3 via the cam link 7. A pusher 8 is provided.

As shown in FIG. 10, the pressing tool 8 has an elongated hole 83 formed therein, and a depression 82 is formed on the upper surface of the pressing tool 8 so as to surround the elongated hole 83. The size, shape and position of the recess 82 are the same as the holes 16 drilled in the wing piece 14 of the main body case, and the protrusion 81 is provided on one side in the longitudinal direction. With respect to the position of the projecting piece 81, the cam 71 of the cam link 7 is operably abutted by the projecting piece 81 when the pressing tool 8 is arranged at a fixed position between the main body case 1 and the back plate 2. To do. Further, on both sides of the end side surface, spring fitting insertion grooves 83, 83 for fitting and supporting a spring are formed on the opposite side of the projecting piece 81, that is, on the lower surface side of the pressing tool 8,
As a result, unless the handle 8 is pulled by the handle H, this spring force pushes up the pusher 8 and presses it against the back surface of the main body case wing piece 14. Therefore, the outer shape of the pusher 8 is made larger than the hole 16 of the main body case 1, and the protrusion 81 of the pusher 8 is formed in the hole 41 of the auxiliary latch bolt 4.
To be inserted inside.

A guide pipe 9 with a head is fitted into the pusher 8. The guide pipe 9 is in the shape of a pipe provided with a flange piece 91 that can be fitted into the recess 82 on the head and has a length of the pressing tool 8.
It is determined so that it can be inserted into the door D when the main body case 1 and the back plate 2 are passed through the inner case and the back plate 2 and screwed to the door D as necessary.

A handle mounting bolt 1 is provided in the guide pipe 9.
The handle H is fixed to the tip of the bolt 10 at the front side position of the door D through 0.

The locking tool main body A having the above-described structure is attached to the back side of the doors D, D facing each other in a double door type with screws. In this case, the two facing fastener body A are arranged so that the hook member 5 sides face each other, and the wing pieces 14,
The handles are attached so that the handle attachment positions provided on the 14 are at the same height. Thereby, when the door D is closed, the hook member 5 and the hook piece 12 of the one locking tool body A are connected to the hook piece 12 and the hook member 5 of the other locking tool body A,
The positional relationship should be such that they face each other and are close to each other. That is, the two door D, when closing the D, the hook member 5 and the hook piece 12, as shown in FIG. 13, the hooks
12 is located on the door D side of the hook member 5 so that the tips thereof face each other with a slight gap. In this state, if the pressing force from the inside of the furniture acts on one or both doors D without swinging the hook member 5,
The door D is about to be opened, but at this time, the hook member 5 and the hook piece 12 facing each other are about to be opened.
The hook member 5 of the fastener main body A attached to the door comes close to the hook piece 12 of the fastener main body A disposed opposite to each other, and the hook member 5 and the hook piece 12 are engaged with each other, and the door Further opening of D is prevented.

On the other hand, when the door D is operated by holding the handle H, the pusher 8 is pulled down against the biasing force of the spring via the handle H and the mounting bolt 10, whereby the pusher is pushed. The cam 71 of the cam link 7 is pushed down by the protruding piece 81 of 8.

As a result, the cam link 7 swings about the support shaft, and the hook member 5 swings in the arrow direction shown in FIG. It comes to separate from the hook piece 12 of the ingredient body A. That is, the hook member 5 swings in the direction away from the hook piece 12, and even if the door is opened in this state, the hook member 5 and the hook piece 1 are separated.
Since it is not engaged with 2, the door D can be freely opened. When the handle H is released, the hook member 5 swings by the urging force of the torsion spring 5S and returns to the initially projected position.

When the door D is to be closed, the head piece 31 of the latch bolt 3 abuts on the latch bolt abutment portion 19 of the fastener main body A which is disposed so as to face the door, as in the conventional door. Due to the force in the direction of closing D, the latch bolt 3 withdraws the latch bolt 3 together with the hook piece 12 into the main body case 1 against the biasing force of the spring S, so that the door D can be closed freely. And completely door D, when D is closed, the hook member 5 and the hook piece 12, as shown in FIG. 13, the hook piece 12 is hydrofluoric
It is located closer to the door D than the closing member 5, and its front ends face each other with a slight gap.

[0026]

According to the door natural opening preventing device of the present invention, when the door in which the hook member is not rocking is about to be opened, the hook member and the locking device arranged so as to face the hook member. The hook piece of the main body is engaged, and due to an earthquake or large vibration,
Even if a large external force acts on the door, the door does not open unintentionally, which is safe, and it is possible to prevent the door from being damaged or the stored articles from being broken out and damaged. Further, by simply pulling the handle provided on either one of the doors, the hook member of the locking device main body rotates, and the hook member engages with the hook piece of the locking device main body that is arranged facing each other. The door can be opened without any trouble, and the door does not interfere with opening and closing.

In addition, the latch main body is provided with a latch bolt to which a hook member is swingably attached, and a latch bolt abutting portion that engages with the latch bolt of the lock main body that is disposed so as to face each other. As a result, it is not necessary to independently install the latch bolt, and the installation work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a door natural opening prevention device of the present invention, in which a part of the door opened state is broken.

FIG. 2 is a front vertical sectional view of a locking tool main body.

FIG. 3 is an explanatory view of a main body case, (A) is a front view,
(B) is a side view.

FIG. 4 is an explanatory view of the main body case, (A) is a bottom view,
(B) is a side view.

FIG. 5 is an explanatory view of a back plate, (A) is a front view, (B) is a left side view, (C) is a right side view, and (D) is a bottom view.

FIG. 6 is an explanatory view of a latch bolt, (A) is a front view,
(B) is a plan view, (C) is a left side view, and (D) is a right side view.

FIG. 7 is an explanatory view of an auxiliary latch bolt, (A) is a front view and (B) is a plan view.

FIG. 8 is an explanatory view of a cam link, (A) is a front view,
(B) is a side view.

FIG. 9 is an explanatory diagram of a slide link.

10 (A) is a front view, FIG. 10 (B) is a side view, FIG. 10 (C) is a rear view, and FIG. 10 (D) is a bottom view.

FIG. 11 is an explanatory view of a hook member, (A) is a front view,
(B) is a side view and (C) is a rear view.

FIG. 12 is an explanatory diagram showing a state in which the door is closed and locked.

FIG. 13 is a side view of FIG.

FIG. 14 is an explanatory diagram of a state in which the door is attached to a door.

[Explanation of symbols]

A locking body D door H handle 1 Fixture body case 2 Back plate 3 Latch bolt 4 Auxiliary latch bolt 5 hook members 6 slide links 7 cam link 8 pushers 9 Guide pipe 19 Latch bolt contact part

Claims (2)

(57) [Claims] 1. A door natural opening prevention device in which a locking body is arranged opposite to each other on the back side of a door which faces a handle provided on the front side of both doors provided on a furniture body in a double door type door opening system. Each locking tool body includes a swingable hook member, a handle for swinging the hook member by pulling the hook member,
When the door is closed , each of the hook members is provided with a hook member that engages with the hook member of the locking device main body that is disposed so as to face the hook member.
The hook piece is located closer to the door than the hook member, and both tips are slightly
When the door that is not rocking the hook member is about to be opened, the hook member and the hook piece of the locking device main body which is arranged facing the hook member are opposed to each other. A device for preventing natural opening of a door, which is configured to be engaged. 2. The locking tool main body is provided with a latch bolt to which a hook member is swingably attached, and a latch bolt abutting portion that engages with a latch bolt of the locking tool main body that is disposed facing each other. The natural opening prevention device for a door according to claim 1, wherein