JPH0552154U - Door opening prevention tool - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a low-cost door opening preventive tool that is easy to assemble and can be used safely. [Structure] A door-side fixing metal member 4 fixed to an inner wall surface portion of the door 2 near an open end, and a metal member integrally formed with the metal member so as to be spaced a predetermined distance and project forward, and a shaft hole is formed in an opposing surface. A pair of support plates 6 and 6, a spring storage recess formed so as to be located between the support plates and the support plate inside the support plate, a plate spring housed in the storage recess, and a locked state by the plate spring. A lock member 11 having a U-shaped member which is urged when positioned in the released state and which has a shaft rotatably supported in a shaft hole of a support plate having an expanded portion at a rear end thereof.
When the lock member is positioned in the locked state, it is engaged with the lock member, and when the lock member is positioned in the released state, the lock member is fixed to a door frame or the like that can enter and exit from the expanded portion of the lock member. The frame side fixing metal fitting 16 is provided with a locking piece having a head.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a door opening preventive device that allows a door to be opened only slightly.

[0002]

[Prior Art]

 Conventionally, a door chain or a U-shaped lock member has been used as a door opening preventive tool of this type.

[0003]

[Problems to be solved by the present invention]

 Although the conventional door chain has a simple structure, it has a drawback that it is troublesome to install and remove the chain, which is troublesome.

Further, although a door opening prevention device using a U-shaped lock member can be easily used, a drawback is that a large number of parts and labor are required to connect the door side fixing metal member and the lock member. In addition, there is a drawback that the cost of the lock member is high because it requires a part to hold the lock member in the released state.If the lock member is left in a halfway state, it will be locked by the impact of the door closed, It was easy to get out of the room.

In view of the above conventional drawbacks, the present invention is easy to use, has a small number of parts, is easy to assemble, can be manufactured at low cost, and is automatically locked by the impact of closing the door. It is an object of the present invention to provide a door opening preventive device that can reliably prevent the occurrence of such problems.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is a door-side fixing metal member fixed to an inner wall surface portion near the open end of a door, and integrally molded to the door-side fixing metal member so as to be spaced a predetermined distance and protrude forward. And a pair of support plates each having an axial hole formed on the opposing surface, and a pair of spring accommodating recesses formed so as to be located between the pair of support plates at an inner portion of the pair of support plates, A pair of leaf springs accommodated in the pair of spring accommodating recesses, and a U-shaped expanding portion at the rear end which is biased and held by the pair of leaf springs in the locked state and the released state. A lock member having a shaft pivotably supported in the shaft holes of the pair of support plates, and a lock member engaged with the lock member when the lock member is positioned in a locked state. Release the member The door opening prevention device is composed of a frame-side fixing metal fitting having a locking piece having a head fixed to a door frame that can be moved in and out of the expanded portion of the lock member when the door is opened. ing.

[0007]

[Action]

 The door opening preventing tool configured as described above can be inserted by pushing the shaft of the lock member into the shaft holes of the pair of support plates. When the lock member is placed in the locked state or the released state, it is urged by the leaf spring and held in that state.

[0008]

[Examples of the present invention]

 Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 13, reference numeral 1 denotes a lock fitting, and a plurality of lock fittings 1 are provided on the inner wall surface portion of the door 2 near the open end, and in this embodiment, 3 The door-side fixing metal fitting 4 fixed by the individual screws 3, 3, 3 and the shaft holes respectively formed on the facing surfaces near the tip end, which are integrally molded with the door-side fixing metal fitting 4 at a predetermined distance from each other and project forward. In order to form a pair of spring accommodating recesses 7 and 7 between the pair of support plates 6 and 6 and the inner side portions of the pair of support plates 6 and 6 and the support plates 6 and 6, respectively. Projecting pieces 8 and 8 integrally formed with the door-side fixing fitting 4, spring locking grooves 9 and 9 formed in the pair of spring accommodating recesses 7 and 7, and the spring locking grooves 9 and 9, It is accommodated in the pair of spring accommodating recesses 7, 7 that are locked to It is composed of a pair of leaf springs 10 and 10 and a lock member 11 rotatably attached to the pair of support plates 6 and 6.

The lock member 11 is U-shaped and has a lock member main body 13 having a widened portion 12 at a rear end thereof, and a pair of square bases 14 integrally formed at the rear end of the lock member main body 13. , 14 and the outer surfaces of the pair of bases 14, 14 when placed in the attached state, when they are placed in the released state and the locked state without coming into contact with the projecting pieces 8, 8. A pair of shafts rotatably supported by the shaft holes 5, 5 of the pair of support plates 6, 6 integrally formed so as to project outward at the portions contacting the projecting pieces 8, 8. It is composed of 15 and 15.

Reference numeral 16 denotes a frame-side fixing metal fitting fixed to a door frame or the like. A plurality of frame-side fixing metal fittings 16 are provided on the door frame or the like, and in this embodiment, two screws 3, 3 are provided. The frame side fixing metal fitting main body 17 fixed by and the lock member 11 of the locking metal fitting 1 projecting forward from substantially the center of the frame side fixing metal fitting main body 17 are placed in the locked state. In this case, from the locking piece 19 having the head 18 which engages with the lock member 11 and can enter and exit from the expansion portion 12 of the lock member 11 when the lock member 11 is positioned in the released state. It is configured.

As shown in FIG. 11, the door opening preventive tool 20 having the above-described structure is configured such that the leaf springs 10 and 10 are inserted into the pair of spring accommodating recesses 7 and 7 and then locked from the side surface of the door side fixing fitting 4. The base portions 14, 14 of the member 11 are inserted between the pair of support plates 6, 6 by utilizing the elastic force of the lock member 11, and the shafts 15, 15 are inserted into the shaft holes 5, 5 for assembly.

The lock fitting 1 assembled in this manner fixes the door-side fixing fitting 4 by using a screw 3 on the inner wall surface portion near the open end of the door. Thereafter, when the lock member 11 of the lock fitting 1 is placed in the open state, the head portion 18 of the locking piece 19 of the frame-side fixing fitting 16 is placed in the expanding portion 12, and the lock member 11 is placed in the locked state. Fix it with a screw 3 on the frame or the like of the engaging part.

In the door opening preventive device 20 attached as described above, when the lock member 11 is positioned in the locked state as shown in FIG. 12, the leaf springs 10 and 10 cause the base portions 14 and 14 to have distal end flat surfaces 14a, It abuts against 14a and holds its state for biasing. Therefore, when the door is released, the locking piece 19 of the frame-side fixing member 16 is locked with the lock member main body 13 of the lock member 11, and the door can be released by the length of the lock member main body 13. . Further, the tip ends of the base portions 14 and 14 of the lock member 11 come into contact with the projecting pieces 8 and 8, so that the lock member 11 cannot be removed.

When the lock member 11 is positioned in the released state as shown in FIG. 13, the leaf springs 10 and 10 come into contact with the lower flat surfaces 14b and 14b of the base portions 14 and 14 to urge them, so that the state is changed. Hold. Therefore, the door can be freely opened and closed, and the lock member 11 is prevented from being inadvertently locked even if the door is closed so that an impact is exerted. Further, the lower portions of the base portions 14 and 14 of the lock member 11 come into contact with the projecting pieces 8 and 8, so that the lock member 11 cannot be removed.

In the above-described embodiment of the present invention, the door-side fixing member 4 is described with the locking member 11 formed with a protrusion that prevents the locking member 11 from being detached in the locked state and the released state. By selecting a material or a shape that does not easily deform the member, the same operational effect can be obtained even if the member does not have the protruding piece.

As is apparent from the above description, the following effects can be obtained in the present invention.

(1) A door-side fixing member fixed to an inner wall surface portion near the open end of the door, and a door-side fixing member that is integrally molded with the door-side fixing member at a predetermined distance so as to project forward, and shafts are respectively formed on the facing surfaces. A pair of support plates having holes formed therein, a pair of spring storage recesses formed inside the pair of support plates so as to be located between the pair of support plates, and the pair of spring storages. The pair of leaf springs housed in the recess, and the pair of leaf springs that are U-shaped and have an expanding portion at the rear end that are biased by the pair of leaf springs when they are positioned in the locked state and the released state to hold the state. A lock member having a shaft rotatably supported in the shaft hole of the support plate, and when the lock member is positioned in the locked state, the lock member engages with the lock member, and the lock member is positioned in the released state. The place In this case, the lock member is provided with a frame-side fixing metal fitting having a locking piece having a head portion fixed to a door frame or the like that can enter and exit from the expanded portion of the lock member. It can be easily assembled by pushing it between the plates. Therefore, the assembling work can be performed in a short time and the cost can be reduced.

(2) According to the above (1), since the lock member is biased by the pair of leaf springs, it is surely prevented that the lock member is automatically changed from the released state to the locked state by the impact applied to the door. can do. Therefore, it can be used safely.

(3) According to the above (1), since it is only necessary to rotate and position the lock member in the locked state and the released state, the operation is easy and it can be used easily.

(4) According to claim 2, the same effects as the above (1) to (3) can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an exploded perspective view of the first embodiment of the present invention.

4 to 6 are explanatory views of a door-side fixing bracket.

7 and 8 are explanatory views of a lock member.

FIG. 9 and FIG. 10 are explanatory views of a frame-side fixing bracket.

FIG. 11 is an explanatory view of a mounting state of a lock member.

FIG. 12 is an explanatory view showing the lock member in a locked state.

FIG. 13 is an explanatory diagram in which the lock member is in a released state.

[Explanation of symbols]

1: Lock metal fitting, 2: Door, 3: Screw, 4: Door side fixing metal fitting, 5: Shaft hole, 6: Support plate, 7: Spring storage recess, 8: Projection piece, 9: Spring locking groove, 10: Leaf spring, 11: lock member, 12: expanded portion, 13: lock member main body, 14: base portion, 15: shaft,
16: Frame side fixing bracket, 17: Frame
M-side fixing bracket body, 18: head, 19: locking piece,
20: Door opening prevention tool.

Claims (2)

[Scope of utility model registration request] 1. A door-side fixing metal member fixed to an inner wall surface portion near the open end of the door, and a door-side fixing metal member integrally molded with the door-side fixing metal member so as to project forward at a predetermined distance from each other and axial holes respectively formed in the facing surfaces. A pair of support plates, a pair of spring accommodating recesses formed so as to be located between the pair of support plates at an inner portion of the pair of support plates, and a pair of spring accommodating recesses in the pair of spring accommodating recesses. A pair of stored leaf springs, and U that is urged and held in the locked state and the released state by the pair of leaf springs so as to hold the state.
A lock member having shafts rotatably supported in the shaft holes of the pair of support plates each having a letter-like shape and having a widened portion at the rear end, and when the lock member is positioned in the locked state, A frame provided with a locking piece having a head portion that is engaged with the lock member and is fixed to a door frame or the like that can enter and exit from the expanded portion of the lock member when the lock member is positioned in the released state. A door opening prevention tool characterized by comprising side fixing metal fittings. 2. A door-side fixing member fixed to an inner wall surface portion near the open end of the door, and integrally formed with the door-side fixing member at a predetermined distance so as to project forward, and an axial hole is formed in the facing surface. A pair of support plates respectively formed, and a protrusion integrally formed with the door-side fixing metal fitting so that a pair of spring accommodating recesses are formed between the pair of support plates inside the pair of support plates. A pair of plate springs housed in the pair of plate spring housing recesses, and a U-shaped lock member body rotatably mounted on the pair of support plates and having an expanding portion at a rear end thereof; A shaft formed so as to be inserted into the pair of support plates by the insertion from a mounting position integrally formed at the rear end portion of the member main body and to project to the outer surface is inserted into the shaft holes of the pair of support plates, Place the lock member body in the locked state. When it is placed or placed in the released state, it comes into contact with the projecting piece to prevent the engagement between the shaft and the shaft hole from being released, and from the base portion that can hold the locked state or the released state by the leaf spring. And a door frame that engages with the lock member when the lock member is in the locked state and can enter and exit from the expanded portion of the lock member when the lock member is in the released state. A door opening preventing tool, comprising a frame side fixing metal fitting having a locking piece having a head fixed to a frame or the like.