JPH1082230A - Door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent oscillation of a rod in a locking state and to reliably prevent the occurrence of a backlash of a door body even when no door stop to press a door body against the lower frame of a door frame is provided. SOLUTION: A fixing lock 7 having an elevatable rod 6 to fix a door body in a closing position is arranged at an openably arranged door body 3. A guide hole 11 to guide the rod 6 is formed in a horizontal material 5a arranged at the door body 3, and an expansion part 13 having an inside diameter larger than that of the guide hole 11 is formed on the rod 6. A taper part 12 through which the expansion part 13 and the guide hole 11 are engaged with each other during locking is formed at least at either the expansion part 13 or the guide hole 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door provided with a lock called a so-called French drop.

[0002]

2. Description of the Related Art In parent-child doors and double doors,
It has a lock (French drop) having a liftable rod for keeping one door in the closed position.
FIG. 10 is a partial sectional view showing a conventional door provided with a lock. The door body 3 of this door includes a vertically movable rod 6.
The door 3 is provided with a rod guide 16 having a guide hole 11 for guiding the rod 6. In addition, in the lower frame 2b of the door frame,
A fitting hole 8 is provided for fitting the tip of the rod 6 into a locked state. The lower frame 2b is provided with a door stop 18 with which the door 3 abuts at the closed position.

[0003]

However, in the above-mentioned door, since there is a gap between the rod 6 and the guide hole 11, the rod 6 easily swings in the locked state, and the door 3 may rattle. there were. Although the position of the fitting hole 8 can be adjusted and the door body 3 is pressed against the door stop part 18 during locking, rattling of the door body 3 can be prevented. In the case where the floor is flattened so as to allow the wheelchair to travel easily without the 18, it is difficult to prevent the door body 3 from rattling.

Accordingly, an object of the present invention is to prevent the rod from swaying in the locked state, and to provide a door stop portion for pressing the door body against the lower frame of the door frame.
An object of the present invention is to provide a door that can surely prevent rattling of a door body.

[0005]

According to a first aspect of the present invention, there is provided a door which can be opened and closed and has a vertically movable rod for fixing the door to a closed position. And a guide hole for guiding the rod is provided in a cross member provided in the door body, and an enlarged diameter portion larger than the inner diameter of the guide hole is provided in the rod. And at least one of the guide holes is provided with a tapered portion for engaging the enlarged diameter portion and the guide hole with each other at the time of locking.

According to a second aspect of the present invention, the door is provided with a lock having a vertically movable rod for fixing the door to a closed position.
Providing a rod guide having a guide hole for guiding the rod, providing the rod with an enlarged portion larger than the inner diameter of the guide hole, and providing one of the enlarged portion and the guide hole with these enlarged portions. A tapered portion for engaging the guide holes with each other when locking is provided.

[0007]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 3, reference numeral 1 denotes a double door which is exemplified as a door, and this door 1 has a door frame 2 which is attached to an opening of a building. The door frame 2 is assembled in a rectangular shape by an upper frame 2a, a lower frame 2b, and left and right vertical frames 2c. The lower frame 2b has no door stop and is buried substantially flush with the floor, so that a flat floor surface on which a wheelchair can travel easily can be formed.

In the door frame 2, two door bodies 3 are provided via a hinge 4 so as to be openable on both sides. In the present embodiment, as the door body 3, steel plates are stretched on both surfaces of a core material framed by upper and lower horizontal members 5a and left and right vertical members 5b made of, for example, an aluminum alloy, and a foam insulating material ( For example, a flash door obtained by injecting, foaming, and filling an urethane foam) is used. The horizontal member 5a is provided horizontally, that is, over the entire width in the horizontal direction.

The door 3 is provided with a lock 7 (also referred to as a French drop) having a vertically movable rod 6 for fixing the door 3 in the closed position. The fixed lock 7 is configured such that the upper and lower portions of the free end side of the door body 3
a and the lower frame 2b are provided on the upper and lower sides of the free end of the door body 3 respectively, and the upper frame 2a and the lower frame 2b are provided with the rods 6 of the fixed locks 7 respectively. Fitting holes 8 are provided for fitting the leading ends into a locked state. Since the configuration of the upper and lower fixed locks 7 is the same, the configuration of the lower fixed lock will be described below.

As shown in FIG. 4, the fixed lock 7 has a vertically long main body (fixed lock main body) 9 which is attached to the free end side end surface of the door body 3 substantially flush. A well-known operation mechanism having an operation lever 10 for vertically moving the rod 6 (a mechanism for converting the rotation of the operation lever into a vertical movement)
Are provided inside the vertical member 5b made of hollow material (not shown). The base end of the rod 6 is screwed to the output portion of the operating mechanism, and the length of the rod 6 can be adjusted by the amount of screwing.

As shown in FIGS. 1 and 2, the cross member 5a constituting the core of the door 3 is provided with a guide hole 11 through which the rod 6 is inserted to guide the rod 6 up and down. The rod 6 is provided with a tapered portion 12 in order to fit the rod 6 and the guide hole 11 without any gap at the time of locking. Specifically, the rod 6
An enlarged portion 13 having an outer diameter larger than the inner diameter of the guide hole 11 is formed, and a tapered portion 12 whose diameter is gradually reduced toward the guide hole 11 is formed at an end of the enlarged portion 13 on the guide hole 11 side. I have.

The guide hole 11 is a vertical through hole, and the tapered portion 12 of the rod 6 is fitted into the open end of the guide hole 11 at the time of locking, so that the rod 6 is prevented from swinging. I have. Although the horizontal member 5a in the illustrated example is made of a hollow material (hollow material), it may be made of a solid material (solid material).

According to the door configured as described above, the rod 6 of the fixed lock 7 is lowered (or raised) by operating the operation lever 10, and the tip of the rod 6 is moved from the lower side (or upper side) of the door body 3. When the door frame 2 is projected and fitted into the fitting hole 8 of the lower frame 2b (or the upper frame) of the door frame 2, the door is locked. At this time, the tapered portion 12 formed on the enlarged diameter portion 13 of the rod 6 fits or engages with the guide hole 11 formed in the cross member 5 a of the door body 3. This can be prevented. Therefore, even if it does not have a door stop for pressing the door body 2 against the lower frame 2b,
The rattling of the door 2 can be reliably or sufficiently prevented.

In the above embodiment, the enlarged diameter portion 1 of the rod 6
3 shows an example in which the tapered portion 12 is provided, but in order to prevent the rod 6 from swaying, the tapered portion 12 is provided in at least one of the enlarged diameter portion 13 of the rod 6 and the guide hole 11. Just do it. Accordingly, a tapered portion 12 may be provided in the guide hole 11 as shown in FIG. 5, or the enlarged diameter portion 13 of the rod 6 and the guide hole 1 as shown in FIG.
1 may be provided with a tapered portion 12.

In the embodiment shown in FIG. 5, as shown in FIG. 6, a groove 14 which is continuous in the longitudinal direction is formed on the upper surface of a horizontal member 5a made of a hollow material. Are formed so as to form a tapered portion 12, and a guide hole 11 is formed between the two tapered portions 12 (the same applies to the embodiment of FIG. 7). When the guide hole side end of the enlarged portion 13 formed in the rod 6 is fitted into the tapered portion 12 of the guide hole 11 at the time of locking, the deflection of the rod 6, more specifically, the thickness of the door body of the rod 6. It is possible to prevent the swing in the direction, and it is possible to prevent the door body 3 from rattling.

The embodiment of FIG. 7 is a combination of the embodiment of FIG. 1 and the embodiment of FIG. 5, and the enlarged diameter portion 13 of the rod 6 and the guide hole 11 are fitted to each other when locked. Convex and concave tapered portions 12 are provided. In addition,
When the tapered portion 12 is provided in the guide hole 11 provided in the horizontal member 5a made of a hollow material, it is preferable to have the concave groove 14 as described above in order to secure the area of the tapered portion 12, but it is not always necessary to use the horizontal member. It is not necessary to have the concave groove 14, in which case the tapered portion 1 is formed on the inner peripheral surface of the guide hole 11.
2 may be provided. The enlarged diameter portion 13 of the rod 6 and the guide hole 1
In the case where the tapered portions 12 are provided on both sides of the rod 6, high processing accuracy is required in order to bring the tapered portions 12 into close contact with each other. When it is provided, not so high processing accuracy is required, so that manufacturing can be facilitated and cost can be reduced.

In the above embodiment, an example is shown in which the present invention is applied to a flash door having a horizontal member. However, the present invention is directed to a flash door or a frame door having a vertical member. And so on. 8 and 9
Shows an embodiment in which the present invention is applied to a frame door having a vertical frame 15 vertically connected to the door body 3. A vertical lock 15 made of a hollow material on the free end side of the door body 3 is provided with a fixed lock 7 having a rod 6 which can be moved up and down by utilizing its internal space.

At the end inside the vertical frame 15, the rod 6
A rod guide 16 having a guide hole 11 for guiding the member up and down so as to be able to ascend and descend is mounted with a screw 17. The rod 6 is attached to the rod 6 when locked.
The tapered portion 12 for fitting the enlarged diameter portion 13 and the guide hole 11 without any gap is provided. As in the embodiment of FIG. 1, the guide hole 11 is formed of a vertical through hole, and the tapered portion 12 is formed at the guide hole side end of the enlarged portion 13 formed in the rod 6. In the door of the present embodiment, the same operation and effect as those of the door of the above embodiment can be obtained. Contrary to the illustrated example, a tapered portion may be provided in the guide hole 11, and the enlarged portion 13 of the rod 6 may be fitted into the tapered portion when locked.

The embodiments of the present invention have been described in detail with reference to the drawings. However, the present invention is not limited to the above embodiments, and various design changes and the like can be made without departing from the gist of the present invention. Is possible. For example, the door to which the present invention is applied may be a parent-child door or the like. Further, it is preferable that the lower frame of the door frame does not have the door stop, but the door frame may have the door stop.

[0021]

In summary, according to the present invention, the following excellent effects can be obtained.

(1) According to the door of the first aspect, the door which can be opened and closed is provided with a lock having a vertically movable rod for fixing the door to the closed position.
A guide hole for guiding the rod is provided in the cross member provided in the door body, and an enlarged diameter portion larger than the inner diameter of the guide hole is provided in the rod, and at least one of the enlarged diameter portion and the guide hole is provided. On the other hand, since the tapered portion for engaging the enlarged diameter portion and the guide hole with each other at the time of locking is provided, it is possible to prevent the rod from swinging in the locked state, and to press the door body against the lower frame of the door frame. Even if it does not have a door stop part, the rattling of the door body can be reliably prevented.

(2) According to the door of the second aspect, the door body which can be opened and closed is provided with a fixing lock having a vertically movable rod for fixing the door body in the closed position.
The door body is provided with a rod guide having a guide hole for guiding the rod, the rod is provided with an enlarged portion that is larger than the inner diameter of the guide hole, and in either one of the enlarged portion and the guide hole, Since the tapered portion for engaging the enlarged portion and the guide hole with each other at the time of locking is provided, it is possible to prevent the rod from swinging in the locked state, and to press the door body against the lower frame of the door frame. Even if it does not have a contact portion, rattling of the door body can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a partial perspective view of the cross member shown in FIG. 1;

FIG. 3 is a front view of a double door to which the present invention is applied.

FIG. 4 is a perspective view schematically showing an operation unit of the fixed lock.

FIG. 5 is a sectional view of a main part showing another embodiment of the present invention.

FIG. 6 is a partial perspective view of the cross member shown in FIG. 5;

FIG. 7 is a cross-sectional view of a main part showing another embodiment of the present invention.

FIG. 8 is a cross-sectional view of a main part showing another embodiment of the present invention.

FIG. 9 is a sectional view taken along line AA of FIG. 8;

FIG. 10 is a cross-sectional view showing a main part of a conventional door.

[Explanation of symbols]

 Reference Signs List 3 door body 5a cross member 6 rod 7 fixed lock 11 guide hole 12 tapered part 13 enlarged diameter part 16 rod guide

Claims (2)

[Claims] 1. A door which can be opened and closed is provided with a locking lock having a vertically movable rod for fixing the door to a closed position, and the rod is guided by a cross member provided on the door. The rod has an enlarged diameter portion larger than the inner diameter of the guide hole, and at least one of the enlarged diameter portion and the guide hole is provided with the enlarged diameter portion and the guide hole when locking. A door provided with a tapered portion for engagement. 2. A door having an openable and closable door, a fixed lock having a vertically movable rod for fixing the door in a closed position, and a rod having a guide hole for guiding the rod in the door. A guide is provided, and the rod has an enlarged diameter portion larger than the inner diameter of the guide hole, and the enlarged diameter portion and the guide hole are engaged with one of the enlarged diameter portion and the guide hole at the time of locking. Characterized by a tapered portion for the door.