JPH09170369A - Secondary door locking metal fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a secondary door from easily being opened by an intruder in a double swinging door consisting of a main door and a secondary door. SOLUTION: A door locking metal fixture is constituted of a metal fixture main body 10, a control lever 11 having one end pivoted on the metal fixture main body 10 in a turnable manner, a slider 12 reciprocating in the direction of the stile by turning operation of the control lever 11 and a rod bar 13 with one end fixed to the slider 12 and the other end formed on a frame member side and detachable to a rod interlocking hole. A lock piece interlocking hole 11a is formed in the control lever 11, at the same time, when the control lever 11 is in a turning position in a state to project the rod bar 13 to the metal fixture main body 10, a lock member 14 is so provided that it is interlocked with the lock piece interlocking hole 11a of the control lever 11 to lock the control lever 11 in an unturnable state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double door having a parent door and a child door, which is provided in a state of being dug in the vertical frame portion of the child door in order to keep the child door in a normally closed state. Related to door lock fittings.

[0002]

2. Description of the Related Art Conventionally, in front doors, indoor doors in buildings, etc., doors may be double doors composed of a parent door and a child door for convenience of carrying in large furniture and equipments. is there.

In this case, in normal times, a person or the like enters and exits by opening and closing only the main door side, and the child door side is closed by a door fastening member so as not to open.

[0004] As the door closing metal fitting for the child door, a metal fitting for raising and lowering, which is generally called French drop, is used. The French dropper is composed of an operation fitting and a rod rod that is moved up and down by the operation fitting, and is provided in the upper and lower parts of the prospective surface of the door end side vertical frame of the child door in a state of being dug into the upper frame and the lower frame. The child door is held in a closed state by engaging the tips of the rod rods with the engaging holes provided in the frame. The detailed structure will be described later.

On the other hand, in the case of an entrance door, as shown in FIG. 11, a door knob 31 and a locking member 34 are provided on the side of the main door 30, and a door end of a child door 32 is provided for double crime prevention. The door chain 33 is attached to the side, and the tip of the door chain 33 is detachable from the parent door 30 side.

[0006]

In such a double door, the French drop installed on the child door side can be easily opened and closed if the hand reaches the prospective surface of the vertical frame, so that an intruder or the like can open the main door. After opening it, you can easily open the child door by inserting your hand into the gap and setting the French drop operation lever to the release side. Therefore, even if the door chain is hung, when the parent door is opened, the child door side can be easily opened, and people can easily enter and leave through the gap between these two doors. There was a problem in crime prevention.

Therefore, a main object of the present invention is to provide a double-door door composed of a parent door and a child door, which relates to a door fastening fitting for normally closing the child door. From the viewpoint of crime prevention, the child door is in the tightened state. It is to prevent the opening operation from being easy.

[0008]

In order to solve the above-mentioned problems, the present invention relates to a double door comprising a parent door and a child door, and a door lock provided on the upper and lower portions of the vertical frame of the child door. In the metal fittings, the door fastening metal fitting includes a metal fitting body, an operation lever whose one end is rotatably supported by the metal fitting body, and a slider which reciprocates in a vertical frame direction by a turning operation of the operation lever, One end is fixed to the slider and the other end is formed with a rod bar that engages and disengages with a rod engagement hole formed on the frame member side. When the operating lever is in the rotating position in which the rod bar is in the projecting state, a lock member is provided which locks the operating lever by engaging the lock piece engaging hole of the operating lever. It is what

Specifically, the lock piece engaging hole of the operating lever is formed into a substantially long hole shape, and on the other hand, a pair of left and right lock pieces which can penetrate the lock piece engaging hole are formed with respect to the lock member. , The lock member is rotatably mounted about an axis orthogonal to the metal fitting body surface, and when the operation lever is in a rotation position in which the rod bar is in a protruding state, the lock member is rotated about the orthogonal axis. By moving the lock piece, the lock piece of the lock member and the lock piece engagement hole of the operation lever engage with each other, and the operation lever cannot be rotated.

In such a case, it is structurally unfavorable that the lock member projects outward from the prospective surface of the vertical frame. Therefore, at least one side surface of the lock member is formed at the lock piece engagement hole forming portion of the operation lever. It is possible to form a dug portion having a plane shape larger than a substantially circumscribing circle of the one-side engaging hole, and make the outer surface of the operation lever and the outer surface of the lock member substantially flush with each other in a state where the lock member is engaged. desirable.

In order to facilitate the locking and unlocking by the lock member, a fitting concave hole is formed on the fitting main body side at the mounting portion of the lock member with respect to the fitting main body, and the fitting concave hole is formed. Is attached in a state in which the base side portion of the lock member is fitted, and small engaging grooves for controlling the rotational position are formed at a central angle of 90 ° on the peripheral wall of the fitting concave hole on the metal fitting body side. At the same time, it is desirable to provide a small protrusion that engages with the small engagement groove on the base side portion of the lock member. Therefore, since the rotation position of the lock member is regulated at every 90 ° rotation position, when the operation lever is operated in the door closed state, the lock member is oriented in the predetermined direction, and therefore the operation lever is rotated. When the lock piece of the lock member can be smoothly passed through the long hole-shaped lock piece engagement hole formed in the operation lever when the lock lever is rotated to lock the lock piece, The lock member can be exactly rotated by 90 °, and thereafter, the lock piece and the operation lever are firmly engaged with each other so that the operation lever cannot rotate.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1, the double door is a door frame 4
A door lock made up of a parent door 2 arranged on the right side of the inside and a child door 3 arranged on the left side of the child door 3, and the door closing is provided on the upper and lower parts of the vertical frame of the door end side of the child door 3, respectively. The child door 3 is normally closed by the metal fittings 1 and 1, and a person or the like enters and exits by opening and closing the parent door 2. Therefore, the door knob 5 is provided only on the parent door 2.

As shown in FIGS. 2 to 5, the child door closing fitting 1 includes a fitting main body 10, an operating lever 11 having one end rotatably supported by the fitting main body 10, and an operation lever. A slider 12 which reciprocates in a vertical frame direction by a turning operation of a lever 11, and a rod bar 13 which has one end fixed to the slider 12 and the other end which is engageable and disengageable with a rod engagement hole formed on the frame member side, It is mainly composed of a lock member 14 which is attached to the metal fitting body 10 and locks the operation lever 11 so that the operation lever 11 cannot rotate when the door is closed. In this embodiment, only the door tightening metal fitting 1 arranged on the lower side will be described, but the door tightening metal fitting arranged on the upper side is used in the opposite manner.

The metal fitting body 1 is a flat rectangular plate-like body, and mounting screw through holes 10a, 1 are formed in the upper and lower portions thereof, respectively.
0b is formed and a substantially I-shaped engraved portion is formed in the center. The excavation processing part has an operation lever 1 on the top and bottom.
Arc-shaped recesses 10c and 10d for making it easy to pick up 1,
These lever pedestals 10f and 10g are formed continuously to the inner side with a depth corresponding to the thickness of the operating lever 11 from the metal fitting main body surface, and a vertically long slide groove hole penetrating the back surface formed in the central portion. 10e, each of these parts is formed into the above-mentioned shape by pressing and punching.

The operation lever 11 has the slide groove hole 1 at a position slightly inside the one end (base end).
0e is rotatably supported in the range of 180 ° by a rotating shaft member 15 passed in the width direction at the center of the base portion 10e.
Lock piece engaging hole 11a having a substantially long hole shape at a portion corresponding to f and 10g
Are formed. Further, the lever connecting shaft 1 is provided at the end on the one side from the supporting position by the rotating shaft member 15.
It is connected to the slider 12 by 6.

On the other hand, the slider 12 has a thick portion 1 in the middle.
2a, and a spring installation hole 12b opening to the metal fitting body 10 side is formed in the thick portion 12a. This spring installation hole 1
The spring holder 1 with the spring member 18 installed inside 2b
7, one end of the operation lever 11 is connected to a standing piece 17a standing on the upper surface of the spring holder with a lever connecting shaft 16. A rod connecting hole 12c is formed at the lower end of the slider 12, and the rod rod 13 is inserted into the rod connecting hole 12c.
Are connected by screwing, and the tip end side of the rod bar 13 is engaged with and disengaged from the rod engaging hole 6 formed on the frame member side as the slider 12 reciprocates.

The slider 12 comprises a pair of left and right rising pieces 1 provided on the upper and lower portions of the back side of the metal fitting body 10, respectively.
The metal fitting body 10 is held by shaft members 20 and 21 passed between 0h, 10i, and so on, and is guided by the shaft members 20 and 21 when moving vertically.

In the present invention, a lock member 14 is provided on the upper pedestal portion 10f of the metal fitting body 10. As shown in FIG. 5, the lock member 14 includes a pair of left and right lock pieces 14b and 14c on the upper side of the cylindrical base 14a.
And the expanded diameter portions 14e and 14f for engaging with the metal fitting body 10 are provided on the rooting side. The engaging expanded diameter portions 14e, 14f are hollowed out at the center for easy deformation, and a vertical small protrusion 14g is formed on the outer peripheral portion. The cross groove 14d formed on the upper surface of the cylindrical base 14a is a groove for inserting a driver tool or the like. As the material of the lock member 14, a suitable material such as metal or plastic can be used, but in view of workability and deformability of the engagement expanded diameter portions 14e and 14f, it is preferably plastic. The product is used.

On the other hand, as shown in FIG. 6, a fitting concave hole 10j for the lock member 10 is formed in a substantially circular shape on the rear surface side of the metal fitting body 10, and a peripheral wall of the fitting concave hole 10j is formed. Small engaging grooves 10k for controlling the rotational position at intervals of 90 ° center angle, 1
0k ... Is formed, and a keyhole-shaped through hole 10m of the lock member 14 is formed on the bottom surface side. Therefore, the lock member 14 is inserted into the keyhole-shaped through hole 10m from the lock pieces 14b and 14c side, and the engagement enlarged diameter portions 14e and 14f of the lock member 14 are fitted into the fitting recessed hole 10j, By installing the slider 12 on the upper side, the lock member is held rotatably around an axis orthogonal to the surface of the metal fitting body 10. In this case, the small protrusions 14g formed on the engagement expanded diameter portions 14e and 14f have a 90 ° angle.
The lock member 1 is engaged by engaging with the small engaging grooves 10k, 10k, ...
The rotation amount of 0 is regulated every 90 °.

In assembling the door tightening metal fitting 1, as shown in FIG. 7, the slide groove hole 10 of the metal fitting body 10 is shown.
With one end side of the operation lever 11 inserted in e, the spring holder 17 is connected to the tip of the operation lever 11 by the lever connecting shaft 16, and then the operation lever 11 is attached to the metal fitting body 10 by the rotating shaft member 15. After that, the lock member 14 is fitted into the fitting recessed hole 10j of the metal fitting body 10, and then the spring 18 is internally provided in the spring installation hole 12b of the slider 12.
While inserting the spring holder 17 already connected to the operation lever 11 into the spring installation hole 12b, the slider 12 is applied to the rear surface side of the metal fitting body 10, and the shaft members 20 and 21 are set to complete the assembly.

As shown in FIG. 8, the operation of closing the child door 3 and locking the child door 3 is performed by rotating the operation lever 11 with the child door 3 closed. Then, due to a so-called toggle action, at the same time as the rotation of the operation lever 11 about the rotation shaft member 15, the position of the lever connecting shaft 16 at the tip of the operation lever 11 is rotated around the rotation shaft member 15, and the spring holder is rotated. The slider 12 moves downward while 17 is pushed into the bottom side of the spring installation hole 12b. After that, when the 90 ° rotation position is passed, the slider 12 is further moved downward while the spring holder 17 is floating, and the state shown in FIG. 6
And the child door 3 is closed.

The operation lever 11 and the lock member 14 are arranged as shown in FIG. 1 when the operation lever 11 is rotated 180 °.
As shown in 0 (A), when the lock pieces 14c and 14d of the lock member 14 are inserted into the lock piece engagement holes 11a formed in the operation lever 11 and the door fastening fitting 1 is locked, 10B, the lock member 14 is rotated by 90 ° about the rotation axis L. Since it is not desirable for the lock member 14 to project, a substantially circumscribed circular cutout portion 18b of the lock piece engagement hole 11a is formed on one surface side of the lock piece engagement hole 11a, and The outer surface of the operation lever 11 and the lock member 14 are engaged with each other.
The outer surface of the is substantially flush.

[0023]

As described above in detail, according to the present invention, in a double door having a parent door and a child door, a lock member for locking the operation lever in a non-rotatable manner is provided to a door tightening fitting for closing the child door. Therefore, an intruder cannot easily open the child door, which is preferable for crime prevention.

[Brief description of the drawings]

FIG. 1 is a front view of a double door.

FIG. 2 is an enlarged side view of a lower door fastening member.

FIG. 3 is a front view of a door fastening member.

FIG. 4 is a view taken along the line IV-IV in FIG. 3;

FIG. 5 is an enlarged perspective view of a lock member.

FIG. 6 is a rear view of the lock member mounting portion of the metal fitting body.

FIG. 7 is an exploded view of the door fastener.

FIG. 8 is a diagram showing an operating procedure for closing the door.

FIG. 9 is a diagram showing an operating procedure for closing the door.

FIG. 10 is a locking procedure diagram of the operation lever.

FIG. 11 is a diagram illustrating a problem of a conventional double door.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Door-closing metal fittings, 2 ... Parent door, 3 ... Child door, 4 ... Door frame, 5 ... Door knob, 6 ... Rod engaging hole, 10 ... Metal fitting body, 10j ... Locking member fitting concave hole, 10k ... Small engagement groove, 11 ... Operation lever, 11a ... Lock piece engagement hole, 11
b ... dug portion, 12 ... slider, 12a ... thick portion, 1
2b ... Spring installation hole, 13 ... Rod rod, 14 ... Lock member, 14b / 14c ... Lock piece, 14e / 14f ... Engaging enlarged diameter portion, 14g ... Small projection, 15 ... Rotating shaft member, 16 ... Lever connecting shaft , 17 ... Spring holder, 18 ... Spring, 20 ...
21 ... Shaft member

Claims (4)

[Claims] 1. A double door comprising a parent door and a child door,
A door tightening fitting provided on each of upper and lower portions of a vertical frame of a door end side of the child door, wherein the door tightening fitting includes a fitting body, an operation lever whose one end is rotatably supported by the fitting body, The slider includes a slider that reciprocates in a vertical frame direction by a rotating operation of an operating lever, and a rod rod that has one end fixed to the slider and the other end that engages and disengages with a rod engaging hole formed on the frame member side. While forming a lock piece engagement hole in the lever,
A lock member that locks the operation lever so that the operation lever cannot be rotated by engaging the lock piece engagement hole of the operation lever when the operation lever is in the rotation position with respect to the metal fitting body so as to project the rod rod. Door closing metal fittings for child doors characterized by being provided. 2. A lock piece engaging hole of the operating lever is formed into a substantially long hole shape, and a pair of left and right lock pieces which can penetrate the lock piece engaging hole is formed with respect to the lock member, and the lock piece A member is rotatably attached about an axis orthogonal to the metal fitting body surface, and the lock member is rotated about the orthogonal axis when the operation lever is in a rotating position where the rod bar is in a protruding state. Thus, the lock piece of the lock member and the lock piece engagement hole of the operation lever are engaged with each other, and the operation lever cannot be rotated. 3. A lock piece engaging hole forming portion of the operating lever is formed with a flat-shaped digging portion which is larger than at least a circumscribed circle of the lock piece engaging hole at one side surface thereof, and the lock member is 3. The door closing metal fitting for a child door according to claim 1, wherein the outer surface of the operation lever and the outer surface of the lock member are substantially flush with each other in the engaged state. 4. A state in which a fitting concave hole is formed on the fitting main body side at a mounting portion of the lock member with respect to the fitting main body, and a root side portion of the lock member is fitted into the fitting concave hole. And small engaging grooves for controlling the rotational position are formed at a central angle of 90 ° at the peripheral wall of the fitting concave hole on the metal fitting body side, and the small engaging groove is provided at the root side portion of the lock member. The door fastening fitting for a child door according to claim 2, wherein a small protrusion that engages with the groove is provided.