JPH0446771Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial field of application> This invention relates to an improvement in the method of mounting fire detectors on the ceiling surface. This invention relates to a fire detector mounting device used when installing a fire detector horizontally in a joint box.

<Prior Art> When a fire detector is installed on a sloped ceiling surface, it must be installed horizontally so that heat or smoke can be efficiently received and let in. Traditionally, in cases like this, wooden boards were processed to match the slope of the ceiling, but this was a time-consuming and troublesome process.

<Means for solving the problem> This invention is an inexpensive and easily angle-adjustable fire detector mounting device designed to solve the above problems. A decorative plate to be attached, a mounting plate equipped with a screw hole for attaching a fire detector to the outer edge of the plate via a hinge, and a plate and a mounting plate arranged so as to be approximately compatible with each other between the decorative plate and the mounting plate. The device is composed of arm pieces each having a long groove erected on each side, and a screw that connects these arm pieces in an overlapping manner and slides in the long groove of the arm piece to adjust the mounting angle of the sensor. It is.

<Function> Attach the decorative plate to the electrical embedded junction box via the paint allowance cover or directly, attach the fire detector to the mounting plate, and adjust the screw sliding in the long groove of the arm piece to prevent a fire. Level the sensor and tighten the screws.

<Example> In the figure, 1 is a sloped ceiling of a building, 2 is an electrical embedded junction box provided on the ceiling 1, 3 is a fire detector, and 4 is a decorative plate connected to the electrical embedded junction box 2. It is provided with a screw hole 41 for attachment and an electric wire lead-in port 42. Reference numeral 5 designates a mounting plate for the fire detector, which is equipped with a screw hole 51 for mounting the fire detector and an electric wire entry port 52, and the decorative plate 4 and the mounting plate 5 are pivoted at their outer edges by a hinge 6. . Another 7,8
is an arch-shaped arm piece that is erected on the decorative plate 4 and the mounting plate 5 so as to correspond almost to each other, and is provided with long grooves 71 and 81, respectively. One ends of the wires are fixed to the decorative plate 4 and the mounting plate 5 through the wire lead-in ports 42 and 52, respectively. Further, the other end is engaged and fixed by a screw 9 sliding in long grooves 71 and 81. Note that a coating allowance cover 10 (FIG. 4) for adjusting the mounting position is provided between the electrical embedded connection box 2 and the decorative plate 4, if necessary.

Next, the installation procedure will be explained.

First, an electric wire (not shown) inserted through the electrical embedded junction box 2 is connected to the fire detector 3 via the electric wire entry ports 42 and 52 of the decorative plate 4 and the mounting plate 5. Thereafter, the fire detector 3 is attached by screwing a screw through the screw hole 51 of the mounting plate 5. Furthermore, screw the screws through the screw holes 41 of the decorative plate 4 to attach the decorative plate 4 to the electrical embedded connection box 2, loosen the screws 9 that slide between the long grooves 71 and 81, and then loosen the screws 9 that slide between the long grooves 71 and 81.
Adjust the length of the fire detector 3 so that it is horizontal to the floor (see Fig. 1 or 5), and in this state, tighten the screw 9 firmly to fix the arm pieces 7 and 8.

<Effects> Since the fire detector mounting device of this invention is constructed and operates as described above, the fire detector can be easily mounted horizontally in accordance with the slope of the ceiling surface.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the fire detector mounting device of this invention. Figure 1 is a side view of a fire detector installed on a sloped ceiling surface using the mounting device, and Figure 2 The figure is a plan view of the decorative plate of the mounting device, Fig. 3 is a plan view of the mounting plate of the mounting device, Fig. 4 is a plan view of the paint allowance cover, and Fig. 5 is a ceiling with a different slope from Fig. 1. FIG. 3 is a side view of the mounting device etc. when mounted on a surface. 1...Ceiling surface, 2...Electrical embedded connection box, 3...
Fire detector, 4... Decorative plate, 5... Mounting plate, 6... Hinge, 7... Arm piece, 8... Arm piece, 9...
...Screw, 10...Painting allowance cover, 11...Mounting screw, 41...Screw hole, 42...Wire entry port, 51
... Screw hole for installing fire detector, 52 ... Electric wire entry port, 71 ... Long groove, 81 ... Long groove.

Claims (1)

[Scope of utility model registration request] A decorative plate that is attached to an electrical embedded junction box provided on a sloped ceiling surface, a mounting plate that is attached to its outer edge via a hinge and has a screw hole for mounting a fire detector, and these decorative plates and mounting plates. In between, the decorative plate and the mounting plate are provided with long grooves that stand upright so as to correspond to each other. A fire detector mounting device characterized by comprising a screw for adjusting the mounting angle.