JP2020023845A - Fireproof structure for device attaching portion of door - Google Patents

Abstract

To provide a fireproof structure for a device attaching portion of a door, having a simple structure and capable of improving fireproof performance.SOLUTION: A fireproof structure for a device attaching portion of a door comprises indoor and outdoor installation devices 2, 3 installed on indoor and outdoor side wall surfaces of a door 1, a metallic back plate 4 fixed to at least one of the indoor and outdoor installation devices 2, 3, and wiring means 6 passing through a wiring opening 5 disposed on the back plate 4 and wiring the indoor and outdoor installation devices 2, 3 to each other. A metallic fire-blocking cap 9, which is opened ona bottom wall part, has a back wall 7 facing the wiring opening 5 at an appropriate interval and a peripheral wall 8 adjacent to the back wall 7, is attachably/detachably connected to the back plate 4.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to a fire prevention structure of a device attachment portion of a door.

  As a structure for attaching a device such as a lock control device to a door, a structure described in Patent Document 1 is known. In this conventional example, a metal back plate having a cable insertion opening is fixed to the door, and an indoor receiver as an indoor device and an outdoor receiver as an outdoor device are fixed to the door. The insertion holes of the back plate corresponding to the indoor installation equipment and the back plate corresponding to the outdoor installation equipment are formed at positions displaced in front view so as not to face each other, and the flame goes straight from the insertion opening. Is prevented.

JP 2007-29644 A

  However, in the above-mentioned conventional example, since it is necessary to prepare a back plate corresponding to equipment installed inside and outside the room, there is a disadvantage that the structure becomes complicated.

  SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-described drawbacks, and has as its object to provide a fire prevention structure for a device mounting portion of a door that can improve fire prevention performance with a simple structure.

  Another object of the present invention is to provide a flame shield cap applicable to the above structure.

According to the invention, the object is
Indoor and outdoor installation devices 2 and 3 installed on the indoor and exterior wall surfaces of the door 1,
A metal back plate member 4 fixed to at least one of the indoor and outdoor installation devices 2 and 3;
Wiring means 6 for inserting the wiring opening 5 formed in the back plate member 4 and wiring between the indoor / outdoor equipment 2 and 3;
The back plate member 4 has a bottom wall portion opened, and a metal flame shield cap 9 having a back wall 7 facing the wiring opening 5 at appropriate intervals and a peripheral wall 8 adjacent to the back wall 7. This is achieved by providing a fire prevention structure for a device attachment portion of a door to which the doors are detachably connected.

  In the present invention, indoor / outdoor equipments 2 and 3 are attached to the indoor / outdoor wall surfaces of the door 1, respectively, and a metal back plate member 4 is fixed to at least one of the indoor and outdoor installation devices. A wiring opening 5 for inserting the means 6 is opened.

  In the present specification, the wiring means 6 includes a connector directly fixed to an installation device to which the back plate member 4 is fixed, a connector plugged into the connector, a cable connected to the connector, and the like.

  The back plate member 4 is provided with a flame-shielding cap 9 having a back wall 7 facing the wiring opening 5 at appropriate intervals and a peripheral wall 8 and formed in a cap shape.

  The flame that has entered the wiring opening 5 due to the fire is evacuated by elongating the time required for the flame to reach the opposite wall because the rear wall 7 of the flame shield cap 9 prevents the straight traveling in the opposite wall direction. Disaster prevention performance such as securing time can be improved.

  In addition, since the flame shield cap 9 is detachably attached to the back plate member 4, if a connection portion of the flame shield cap 9 is prepared on the back plate member 4, it differs depending on whether or not the flame shield cap 9 is attached. We can provide products with disaster prevention specifications.

In addition, the fire prevention structure of the equipment mounting part of the door,
The indoor and outdoor equipments 2 and 3 are connected to each other via a connecting rod 10 that protrudes from the back plate member 4 and penetrates through the inside of the door 1.
The flame shield cap 9 connects the upper mounting piece 11 formed at the upper end to the connecting rod 10, and locks the lower end to the lower edge of the wiring opening 5 of the back plate member 4 so as to be in a predetermined position. It can be configured to be retained.

  By connecting the upper end of the flame shield cap 9 to the connecting rod 10 and locking the lower end to the lower edge of the wiring opening 5, it is necessary to provide a separate mounting structure for the flame shield cap 9 on the back plate member 4. Since it is eliminated, the structure is simplified.

Also,
The fireproof structure of the door device mounting portion, in which the flame shield cap 9 is capable of being bent in the horizontal direction and provided with a bent piece 12 that interferes with the connecting rod 10 in the bending posture and restricts movement to the unlocked position. With this configuration, it is possible to reliably prevent inadvertent detachment after mounting with a simple structure.

The above fire protection structure
A metal flame shield cap detachably attached to a metal back plate member 4 fixed to an installation device installed on the surface of the door 1 and closing a wiring opening 5 opened in the back plate member 4 9 and
A locking portion 13 for locking to a lower edge of the wiring opening 5;
A main body portion 14 having a back wall 7 facing the wiring opening 5 at an appropriate distance in a state of being attached to the back plate member 4 and a peripheral wall 8 adjacent to the back wall 7 and having a bottom wall portion opened; ,
Can be used.

It is an exploded perspective view showing the present invention. 1A and 1B are diagrams illustrating a door to which the present invention is applied, wherein FIG. 2A is a front view as viewed from the indoor side, FIG. 2B is a cross-sectional view, and FIG. It is a figure which shows a back plate member, (a) is sectional drawing, (b) is a 3B direction arrow view of (a). It is a figure which shows a flame-shielding cap, (a) is a front view, (b) is a sectional view taken on line 4B-4B of (a), (c) is a perspective view seen from the front side, (d) is a view seen from the back side. FIG. 5A is a view corresponding to FIG. 3B, and FIG. 5B is a cross-sectional view taken along line 5B-5B of FIG. 5A. FIG.

  An embodiment of the present invention is shown in FIG.

  In this example, a card authentication device (outdoor installation device 3) is installed on the outside wall surface of the door 1, and a battery case (indoor installation device 2) for supplying power to the card authentication device 3 is installed on the indoor side wall surface.

  When a card (not shown) carried by the user is authenticated by the card authentication device 3, the electric lock 16 fixed in the door 1 shifts to an unlocked state, and the door is operated by operating a handle (not shown). 1 can be opened.

  A back plate member 4 made of a metal material is fixed to the back surface of the card authentication device 3 installed on the outdoor wall surface of the door 1, that is, the indoor surface. As shown in FIG. 1, for fixing the back plate member 4, a screw 4 b inserted through a screw insertion hole 4 a formed in the back plate member 4 and screwed into a boss 3 a formed in the card authentication device 3 is used. You.

  A connecting rod 10 formed of a metal pipe is provided on the back plate member 4 so as to protrude in the rear direction, and the battery case 2 is fixed by a bolt 15 screwed into a female screw 10 a formed on the inner peripheral wall of the free end of the connecting rod 10. You. When the bolt 15 is screwed in, the battery case 2 and the card authentication device 3 are fixed so as to sandwich the indoor side wall surface of the door 1, and the head 15 a of the bolt 15 is arranged toward the indoor side, and Since the metal back plate member 4 is disposed on the outdoor wall surface, it is difficult to remove the card authentication device 3 from the outdoor wall surface, thereby improving the security performance.

  In order to supply power from the battery case 2 to the card authentication device 3, the battery case 2 and the card authentication device 3 are plug-in connected to a cable 6 a constituting wiring means 6 and a connector 6 b fixed to the card authentication device 3. Connection is made using a connector (not shown), and a wiring opening 5 for passing the wiring means 6 is opened in the back plate member 4. In this example, the wiring opening 5 is used to pass through a connector 6b fixed to the card authentication device 3.

  As shown in FIG. 3B, the wiring opening 5 is provided with notches 5a extending vertically in left and right side edges in addition to a space for inserting the connector 6b.

  A flame shield cap 9 is attached to the back plate member 4. As shown in FIG. 4, the flame-shielding cap 9 is formed by bending a metal plate, and includes a back wall 7, a main body 14 including a peripheral wall 8 including a left and right side wall 8 a adjacent to the back wall 7 and a ceiling wall 8 b, It has an upper mounting piece 11 formed by bending the tip of the ceiling wall 8b of the main body 14 upward.

  In this example, in the main body 14, the rear wall 7, the left and right side walls 8a, and the ceiling wall 8b correspond to rectangular parallelepiped side walls, and the bottom wall and the front wall facing the rear wall 7 are opened. The width (dimension in the width direction) between the left and right side walls is formed slightly smaller than the width dimension of the wiring opening 5, and the height dimension of the left and right side walls is determined by the wiring opening 5. It is formed larger than the height dimension.

  Further, an insertion piece 14a having a height dimension that can be inserted into the cutout 5a of the wiring opening 5 is protrudingly provided at an edge in the depth direction of the left and right side walls 8a of the main body 14, and the insertion piece 14a A hook-shaped locking portion 13 that can be locked to the lower edge of the wiring opening 5, more precisely, to the lower edge of the notch 5 a, is formed between the left and right side walls 8 a and the edges of the right and left side walls 8 a.

  Further, the upper mounting piece 11 is provided with a vertically long slot 11a. The connecting hole 10 protruding from the back plate member 4 can be inserted into the elongated hole 11 a, and the upper end edge of the connecting hole 10 is engaged with the lower end of the wiring opening 5 by the locking portion 13. It is formed to a length that almost contacts.

  A bent piece 12 protrudes from a side edge of the upper mounting piece 11. The bent piece 12 protrudes laterally from the side edge of the upper locking portion 13 in the unfolded state, and before being attached to the back plate member 4, as shown in FIG. It is folded horizontally in the direction. The bent piece 12 can be further bent in the horizontal direction and can be moved in a posture parallel to the upper mounting piece 11. The upper edge of the bent piece 12 has the locking portion 13 at the lower edge of the wiring opening 5. In the state where the bent piece 12 is bent until the bent piece 12 becomes parallel to the upper mounting piece 11, the bent piece 12 is positioned below the connecting rod 10 with a small interval compared to the locking depth of the locking portion 13. Set to be located.

  On the other hand, as shown in FIG. 2, an installation hole 1 a penetrating between the indoor and exterior wall surfaces and a handle (not shown) for performing an unlatching operation of the electric lock 16 fixed in the door 1 are inserted into the door 1. A handle insertion hole 1b is opened. When attaching the card authentication device 3 and the battery case 2, the back plate member 4 is fixed to the card authentication device 3, and a connector (not shown) fixed to the cable 6a is plugged into the connector 6b of the card authentication device 3.

  Thereafter, the flame shield cap 9 is attached to the back plate member 4, and the connector fixed to the other end of the cable is plug-in-connected to a connector (not shown) on the battery case 2 side. The battery case 2 is screwed into the female screw 10a of the connecting rod 10 to fix the battery case 2 to the indoor side wall surface, thereby completing the mounting operation (see FIG. 1).

  With the battery case 2 and the card authentication device 3 attached, as shown in FIG. 5, the flame shield cap 9 locks the locking portion 13 to the lower end edge of the through hole 5 and the upper mounting piece 11. In the state where the connecting rod 10 is inserted through the long hole 11a, it is held at a predetermined position in a state where the falling in the rear direction is restricted.

  After the flame shield cap 9 is attached to the back plate member 4 and the bent piece 12 is bent in a horizontal direction until the bent piece 12 becomes parallel to the back wall 7 of the main body 14, as shown in FIG. The bent piece 12 is located between the ceiling wall 8 b of the main body 14 and the connecting rod 10. As described above, there is only a gap between the upper edge of the bent piece 12 and the connecting rod 10 that is equal to or less than the locking dimension of the locking portion 13, so that the flame shielding cap 9 is shifted upward. Even if there is, the locking of the locking portion 13 is not released, so that accidental dropping can be completely prevented.

  According to the fire prevention structure constituted by installing the indoor and outdoor equipments 2 and 3 equipped with the flame shield cap 9 as described above, the opening for mounting the indoor and outdoor equipments 2 and 3 by the back plate member 4. Further, the back wall 7 of the flame shield cap 9 faces the wire opening 5 of the back plate member 4, and a space for drawing out cables is secured on the bottom wall of the flame shield cap 9.

  Therefore, regardless of whether the source of the fire is indoors or outdoors, the flame is prevented from traveling straight by the back plate member 4 and the back wall 7 of the flame shielding cap 9, so that the flame spread speed can be reduced.

  In addition, since the flame shield cap 9 can be attached only to the case of the fireproof specification when installing the indoor and outdoor equipments 2 and 3, a type without the flame shield cap 9 may be selected according to the needs of the user. Will be possible.

  In the above description, the case where the back plate member 4 is provided only in the card authentication device 3 which is an outdoor device is shown. However, the back plate member 4 may be provided in the battery case 2 or may be provided only in the battery case 2.

  Further, although the case where the flame shielding cap 9 is formed in a rectangular parallelepiped shape is shown, it can be formed in an appropriate shape such as a hemispherical shell shape.

DESCRIPTION OF SYMBOLS 1 Door 2 Indoor installation equipment 3 Outdoor installation equipment 4 Back plate member 5 Wiring opening 6 Wiring means 7 Back wall 8 Perimeter wall 9 Flame shielding cap 10 Connecting rod 11 Upper mounting piece 12 Folding piece 13 Locking part 14 Main part

Claims (5)

Indoor and outdoor equipment installed on the indoor and outdoor walls of the door,
A metal back plate member fixed to at least one of the indoor and outdoor equipment,
Wiring means for wiring between the indoor and outdoor equipment through a wiring opening provided in the back plate member,
The back plate member has a bottom wall portion opened, and a metal flame-shielding cap having a rear wall facing the wiring opening at appropriate intervals and a peripheral wall adjacent to the rear wall is detachably connected. Fire protection structure for door mounting parts. The indoor and outdoor equipment is connected to each other via a connecting rod projecting from the back plate member and penetrating through the door,
The flame shield cap is held at a predetermined position by connecting an upper mounting piece formed at an upper end portion to the connecting rod and locking a lower end portion to a lower edge of a wiring opening of a back plate member. A fire prevention structure for a device mounting portion of the door according to 1.   3. The device mounting part of a door according to claim 2, wherein the flame shielding cap is provided with a bent piece that can be bent in a horizontal direction and interferes with the connecting rod in a bending posture to restrict movement to an unlocking position. Fire protection structure. A metal flame shield cap detachably attached to a metal back plate member fixed to an installation device installed on the surface of the door, and closing a wiring opening opened in the back plate member,
A locking portion for locking to a lower edge of the wiring opening;
In the state of being attached to the back plate member, a main body having a rear wall facing the wiring opening at an appropriate distance from the wiring opening, and a peripheral wall adjacent to the rear wall, and a bottom wall being open,
Flame shield cap having a.   A folding piece that can be bent in the horizontal direction and interferes with a connecting rod that connects installation devices installed on the front and back of the door in a bent state to restrict movement of the locking portion to the unlocking position. 4. The flame shield cap according to 4.

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