JPH10292713A - Falling preventive device for door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent slipping-off from a door frame of a door, and to remove the door easily by forming a projecting section, in which an upper end is projected in height abutted against the surface of the groove section of a guide rail in an upper section, at the upper edge of the door and forming a hole, into which the projecting section is inserted, to the groove section of the guide rail in the upper section. SOLUTION: Each glass door is inserted near the centers of the groove sections of a guide rail 2 in an upper section. The two projecting sections 11 of the upper frame members of the glass doors are fitted into the holes 7 of the groove sections. The lower frame members 10 of the glass doors are placed on a guide rail 3 under the state. When the glass doors are moved in the horizontal direction under the state, in which the glass doors are put on the guide rail 3, the projecting sections 11 are positioned at places displaced from the holes 7, and the upper ends of the projecting sections 11 are brought to the state, in which the upper ends are brought into contact with the underside of a horizontal partition wall 6. Consequently, the projecting section 11 is conformed to the hole 7 and the glass door is lifted and removed simply at the time of removal. Accordingly, the door can be mounted and demounted safely, and can be slid horizontally and smoothly without looseness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing a door from falling off, and more particularly to an apparatus for preventing a door from being accidentally dropped in a library using a sliding door.

[0002]

2. Description of the Related Art In a conventional general sliding door type library,
A clearance is set between the upper end of the door and the groove surface of the upper guide rail, the upper end of the door is inserted into the upper guide rail, and the lower end is mounted on the lower guide rail. There is also a fitting-killing method in which a door and a guide rail are set in advance and the whole is fitted and fixed in the library main body.

[0003]

Among the above-mentioned conventional systems, in the former system, since the door always has room to move upward, there is a possibility that the door may be accidentally dropped when the door is opened and closed.
In addition, there is a drawback that the door slides during sliding movement of the door. Although the latter method does not have the disadvantages of the former method, it is difficult to replace the door due to the fit-in, and it takes time to assemble the library. There is a disadvantage that there is also a risk of breakage.

[0004] It is an object of the present invention to prevent a door from being accidentally detached from a door frame and to be able to be easily removed at a predetermined place.

[0005]

According to the present invention, the above-mentioned problem is solved as follows. (1) A device for preventing a door, which is slidably fitted between guide rails provided at upper and lower portions of a door frame, from falling off, wherein an upper end of the upper edge of the door is provided with a groove portion of the upper guide rail. A projection projecting at a height almost in contact with the surface is provided, and a hole of a size sufficient to fit the projection is provided in a groove of the upper guide rail.

(2) In the above item (1), the right and left ends of the projection provided on the upper edge of the door are inclined surfaces inclined in a mountain shape.

(3) In the above item (2), the projection provided on the upper edge of the door has a shape protruding in an arc shape.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows three sliding glass doors.
FIG. 2 is a front view of a bookcase (A) provided with (1a), (1b), and (1c) in a front opening, and FIG. 2 shows a left end glass plate (1a) in an enlarged manner.

The upper part of the door frame of the bookcase (A) is a guide rail.
According to (2), the lower portion is similarly constituted by a guide rail (3), and a glass door is fitted into these guide rails (2) and (3).

The upper guide rail (2) is shown in FIGS.
As shown in, corresponding to the three sliding doors (1a) (1b) (1c), provided three grooves (4a) (4b) (4c) opening downward,
For example, it is a molded article of a resin material such as an impact-resistant ABS resin.

The grooves (4a), (4b), and (4c) are provided at four intermediately protruding side walls (5a), (5b), (5c), and (5d) at an intermediate height between the upper guide rails. And a horizontal partition wall (6) provided in the above.

In the vicinity of the center of the upper guide rail (2), the grooves, (4a), (4b) and (4c),
In (6), two rectangular holes (7) are formed at intervals.

As represented by the glass door (1a) shown in FIG. 2, the glass door has upper frame members at upper and lower ends of a glass plate (8).
(9) and a lower frame member (10).

The upper frame member 9 has a shape as shown in FIGS. 5 and 6, and is a molded product of a resin material such as an impact-resistant ABS resin.

At the center of the upper edge of the upper frame member (9) in the front-rear direction, two protrusions (1
1) is formed. The left and right ends of the protruding portion (11) are inclined so as to have a substantially mountain shape, preferably an arc shape.

The distance between these projections (11) is set equal to the distance between the two rectangular holes (7) formed in the above-mentioned upper guide rail (2). Further, as shown in FIG. 7, the protrusions of the upper frame member (9) extend from the lower end of the lower frame member (10).
When the glass door is fitted to the upper and lower guide rails (2) and (3), the upper end of the projection (11) is almost the same as the upper guide rail (2). The grooves (4a), (4b) or (4c) are set so as to contact the bottom surface, that is, the horizontal partition (7).

The protrusion (11) at the upper edge of the upper frame member (9)
Arc-shaped bulging portions (12a) (12b) bulging sideways from the front and rear surfaces of the upper frame member are formed immediately below the upper frame member. The distance from the tip of the bulges (12a) (12b) to the tip is the width of the grooves (4a) (4b) (4c) of the upper guide rail (2), that is, the opposed side walls (5a) (5b). ) (5c) (5d) is set slightly shorter than the distance between.

In mounting the glass doors (1a), (1b) and (1c), each of the glass doors is inserted into the groove (4) of the upper guide rail (2).
a) Fit near the center of (4b) (4c), and fit the two projections (11) of the upper frame member (9) of the glass door sufficiently into the rectangular holes (7) of the groove. In this state, the glass door is projected (1
Since it is inserted deeply upward by the amount of (1), the lower frame member (10) of the glass door can be placed on the lower guide rail (3).

When the glass door is moved in the left-right direction with the glass door resting on the lower guide rail (3), the projection (11) comes out of the rectangular hole (7), Department
The upper end of (11) is almost in contact with the groove surface, that is, the lower surface of the horizontal partition. When removing the glass door, the projection 11 can be easily removed by aligning the protrusion 11 with the rectangular hole 7 and then lifting it up in the reverse order.

[0020]

According to the present invention, the door can be easily and safely detached only at the position where the hole of the upper guide rail and the projection of the door coincide with each other.
Since the protruding part is in contact with the groove surface of the upper guide rail, there is no danger of falling off, and it does not shake up and down, so it slides horizontally and smoothly without rattling. be able to.

According to the second aspect of the present invention, when the left and right ends of the protrusion provided on the upper edge of the door are inclined surfaces inclined in a mountain shape, the protrusion of the door is provided at the position of the hole of the upper guide rail. When the door is lifted by roughly adjusting the angle, the inclined surface serves as a guide, so that an effect that the protrusion is brought to a position corresponding to the hole can be obtained.

According to a third aspect of the present invention, when the protrusion provided on the upper edge of the door is formed to have a shape protruding in an arc shape,
The above-described guiding effect can be performed in the widest range of the entire length of the protrusion in the left-right direction.

[Brief description of the drawings]

FIG. 1 is a front view of a library provided with three sliding glass doors according to the present invention.

FIG. 2 is an enlarged front view of the leftmost glass door of FIG.

FIG. 3 is a partially omitted enlarged front view of a guide rail above an opening of a library;

4 is a partially omitted enlarged bottom view of the upper guide rail shown in FIG. 3;

FIG. 5 is a partially omitted enlarged front view of an upper frame member of the glass door shown in FIG. 2;

6 is a partially omitted enlarged plan view of the upper frame member shown in FIG.

FIG. 7 is an enlarged vertical cross-sectional view of a part of an opening of a library in an assembled state;

[Explanation of symbols]

 (A) Library (1a) (1b) (1c) Glass (2) Upper guide rail (3) Lower guide rail (4a) (4b) (4c) Groove (5a) (5b) (5c) (5d) Side wall (6) Horizontal partition (7) Rectangular hole (8) Glass plate (9) Upper frame member (10) Lower frame member (11) Projection (12a) (12b) Swelling portion

Claims (3)

[Claims] 1. A device for preventing a door, which is slidably fitted between guide rails provided on upper and lower portions of a door frame, from falling off, wherein an upper end of the upper edge of the guide rail is provided on an upper edge of the door. A drop-out of a door, wherein a protrusion protruding at a height almost in contact with a surface of the groove is provided, and a hole of a size sufficient to fit the protrusion is provided in a groove of the upper guide rail. Prevention device. 2. The dropping prevention device for a sliding door according to claim 1, wherein the left and right ends of the projection provided on the upper edge of the door are inclined surfaces inclined in a mountain shape. 3. The fall prevention device for a sliding door according to claim 2, wherein the projection provided on the upper edge of the door has a shape protruding in an arc shape.