JP2577763Y2 - Ceiling mounted detector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted detector embedded in a ceiling of a building such as an office, a hotel, a hospital, and the like.

[0002]

2. Description of the Related Art Conventionally, in buildings and the like,
Various detectors such as temperature and humidity detectors, infrared detectors, and fire detectors are embedded and installed in the ceiling and wall to control air conditioning and prevent theft and fire. The most common method for mounting a detector of this type is to fit a case, in which a sensor is mounted, into a concave portion provided in a ceiling or the like, and fix the case by a fastening means such as a screw (eg, Japanese Utility Model Application Laid-Open No. 3-4).
No. 2544). Further, as another method, for example, an attachment device disclosed in Japanese Utility Model Publication No. 3-44544 is also known. In this mounting device, a mounting bracket bent in a U-shape is mounted on a back side of a case body by a set screw so as to be able to undulate, and the mounting bracket and a flange provided on a front surface of the case main body are combined with a ceiling plate or the like. The case body is fixed by sandwiching the mounting surface of the case.

[0003]

[Problems to be Solved by the Invention] However, the above-mentioned screw fixing method is cumbersome since the screw must be screwed upward, and the latter fixing method using the mounting bracket has a complicated structure and a small number of parts. There was a problem that the number increased.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and has as its object a simple structure, a small number of parts, easy installation, and easy removal. An object of the present invention is to provide a ceiling-mounted detector that can easily perform an operation.

[0005]

In order to achieve the above object, the present invention provides a ceiling-mounted detector in which a case containing a sensor is embedded and installed in a sound-absorbing board on a ceiling, and a spike is projected from a front surface of the case. The spikes are pushed into the sound absorbing board on the opposite side of the room, and the case is detachably fixed to the sound absorbing board.

[0006]

In the first aspect, the spike is driven into the sound absorbing board to fix the case to the sound absorbing board.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a sectional view showing an embodiment of a ceiling-mounted detector according to the present invention, and FIG. 2 is a front view of the detector. In these figures, 1 is a sound absorbing board as a ceiling plate, 2 is a temperature and humidity detector embedded and installed in a detector mounting hole 3 provided in the sound absorbing board 1.
Is a case 4, a front cover 5 covering a front opening of the case 4, a wiring board 6 incorporated in the case 4, a wiring board 6
The sound absorbing board 1 is detachably fixed to the upper surface of the sound absorbing board 1, that is, the anti-indoor side surface 1a by, for example, four spikes 8 provided to protrude forward of the front cover 5. The case 4 is formed in a cylindrical body with both ends open, and a square flange 4A is integrally protruded from the front opening, and a recess 9 into which the front cover 5 is fitted is formed on the front of the flange 4A. It is recessed. A plurality of slit-shaped ventilation holes 10 communicating the inside and outside are formed at predetermined intervals in the circumferential direction at the rear end portion of the peripheral surface of the case 4, and the wiring board 6 is protected from the dust and the like at the rear inside. The dust cover 11 is fitted and fixed. The wiring board 6 is fixed to the case 4 together with the front cover 5 by two set screws 12.
Is fixed to the substrate mounting portion 13 integrally provided on the inner surface of the
It is connected to an external cord 14. The front cover 5 is formed in a quadrangular shape, and is fitted into a center of the front surface, and is provided with a cylindrical cap 15 protruding by fixing, and a concave screw mounting portion provided around the cap 15 and through which the set screw 12 is inserted. A cap 15 is inserted into the detector mounting hole 3 of the sound absorbing board 1 from behind the ceiling via a sleeve 17, and a front end of the cap 15 projects into the room. A plurality of intake holes 18 are formed in the front end portion of the peripheral surface of the cap 15 in the circumferential direction, thereby connecting the inside of the case 4 and the room. Caps 15 of various lengths are prepared and can be replaced according to the thickness of the sound absorbing board 1. The sleeve 17 is fitted into the detector mounting hole 3 and fixed by an adhesive, and covers the indoor opening end of the detector mounting hole 3 with a flange 17A integrally projecting from the outer peripheral surface of the front end. ing. The spike 8 used as a fixing means for fixing the temperature and humidity detector 2 may be anything as long as it is thin and has a sharp tip, such as a nail, and is pushed into the ceiling back side surface 1a of the sound absorbing board 1.

FIG. 3 is a sectional view showing a structure for attaching a spike, and shows an example in which a nail 20 is used as a spike. Spike insertion hole 2 through which nail 20 is inserted near the outer periphery of front cover 5
1 and a recess 22 into which the head 20a of the nail 20 can be fitted is connected to the opening behind the ceiling of the spike insertion hole 21, and the nail 4 prevents the nail 20 from being pulled backward by the flange 4A of the case 4. It is something to do. When attaching the front cover 5, after inserting the nail 20 into the spike insertion hole 21, the front cover 5 may be fitted into the recess 9, and then the front cover 5 may be fixed to the front cover 5 with the set screw 12.

When attaching the temperature and humidity detector 2 having such a configuration, the spike 8 may be driven into the sound absorbing board 1 by inserting the cap 15 of the front cover 5 into the sleeve 17 from inside the ceiling. In this case, since the sound absorbing board 1 is formed of gypsum or the like, if the detector 3 is pressed against the sound absorbing board 1 by hand, the spike 8 can be easily pushed.

Thus, the detector 2 having such a configuration is provided.
In this case, since screws, mounting brackets and the like are not used, the structure is simple and the number of parts is small, and the mounting work of the detector 2 and the change of the installation place are extremely simple and easy, and the workability is improved. Can have the advantages.

FIG. 4 is a perspective view showing another embodiment of the cap 15. As shown in FIG. A lid 30 is integrally provided on the front surface of the cap 15, that is, at the center of the indoor side surface via a plurality of support portions 31, and a groove 32 is formed around the lid 30. If it is necessary to provide a hole on the front surface of the cap 15 to increase the area of the air intake hole, the cover 30 may be pressed strongly to push the cover 3
1 is easily broken and the lid 30 can be removed.

Although the above embodiment has been described with reference to the case where the present invention is applied to the temperature / humidity detector 2, the present invention is not specified at all, and the present invention is also applicable to a fire detector, an intrusion detector, and the like. Further, it is also possible to house a plurality of different sensors in the case 4 to form a composite detector. In addition, the present invention can be variously modified and modified. For example, the front cover 5 and the spike 8 may be integrally formed by insert molding, and the case 4 has a double cylindrical structure, and the outer case is attached to the sound absorbing board 1. The spike 8 may be detachably fixed, the sensor may be housed and arranged in the inner case, and the inner case may be fitted and housed in the outer case.

[0013]

As described above, the ceiling-mounted detector according to the present invention has a structure in which a spike is protruded from the front of the case and the spike is pushed into the sound absorbing board forming the ceiling. Does not require any screws, has a simple structure, is extremely easy to install and remove, can improve workability, and is easy to change the installation location, increasing the freedom of layout change. Can be.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a ceiling-mounted detector according to the present invention.

FIG. 2 is a front view of the detector.

FIG. 3 is a cross-sectional view showing a structure for attaching a spike.

FIG. 4 is a perspective view showing another embodiment of the cap.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sound absorption board 2 Heat / humidity detector 4 Case 5 Front cover 6 Wiring board 7 Sensor 8 Spike 20 Nail

Claims (1)

(57) [Scope of request for utility model registration] 1. A ceiling-mounted detector in which a case accommodating a sensor is embedded in a sound-absorbing board on a ceiling, and a spike is protruded from a front surface of the case, and the spike is pushed into a side of the sound-absorbing board opposite to a room, A ceiling-mounted detector, wherein the case is detachably fixed to a sound absorbing board.