JPH0669778U - Ceiling mounted detector - Google Patents

Abstract

(57) [Abstract] [Purpose] The structure is simple, the number of parts is small, it can be installed easily, and the removal work can be done easily. [Structure] A front cover 5 is arranged in a front opening of a case 4 for accommodating a sensor 7. Further, a spike 8 is provided on the front surface of the front cover 5, and the spike 8 is pushed into the sound absorbing board 1 forming the ceiling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ceiling-mounted detector that is embedded and installed in the ceiling of buildings such as offices, hotels and hospitals.

[0002]

[Prior art]

 Conventionally, in buildings, etc., various detectors such as temperature / humidity detectors, infrared detectors, and fire detectors are embedded in the ceiling and wall surfaces to control air conditioning and prevent theft and fire. . The most common mounting structure for this type of detector is to fit the case where the sensor is mounted into a recess provided in the ceiling and fix it with fastening means such as screws. -42544). As another method, a mounting device disclosed in Japanese Utility Model Publication No. 3-42544 is also known. In this mounting device, a mounting bracket bent in a V shape is mounted on the back side of the case body with a set screw so that it can be raised and lowered, and the ceiling plate is composed of this mounting tool and the collar portion provided on the front side of the case body. The case body is fixed by sandwiching the mounting surface such as.

[0003]

[Problems to be solved by the device]

 However, the former screw-fastening method is troublesome because the screw must be screwed upwards, and the latter fixing method using mounting brackets has a problem that the structure is complicated and the number of parts is large. It was

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to have a simple structure, a small number of parts, easy installation, and removal. It is to provide a ceiling-mounted detector that can be easily operated.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is a ceiling-mounted detector in which a case housing a sensor is embedded in a sound absorbing board on the ceiling, and spikes are provided on the front surface of the case. Then, the spikes are pushed into the inner surface of the sound absorbing board opposite to the room, and the case is detachably fixed to the sound absorbing board.

[0006]

[Action]

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

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments 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 same detector. In these figures, 1 is a sound absorbing board as a ceiling board, 2 is a temperature and humidity detector embedded in a detector mounting hole 3 provided in the sound absorbing board 1, and this temperature and humidity detector 2 is a case 4 and a case. 4, a front cover 5 that covers the front opening of the front cover 4, a wiring board 6 incorporated in the case 4, a sensor 7 mounted on the wiring board 6, and the like. 8 is detachably fixed to the upper surface of the sound absorbing board 1, that is, to the side surface 1a opposite to the inside of the room. The case 4 is formed into a cylindrical body with both ends open, and a quadrangular flange portion 4A is integrally projectingly provided in the front opening portion. The front surface of the flange portion 4A is provided with a concave portion 9 into which the front cover 5 is fitted. Is recessed. A plurality of slit-shaped ventilation holes 10 for communicating the inside and the outside are formed at predetermined intervals in the circumferential direction at the rear end of the peripheral surface of the case 4, and the wiring board 6 is protected in the inner rear from dust and the like. The dust cover 11 is fitted and fixed. The wiring board 6 is fixed to the board mounting portion 13 integrally provided on the inner surface of the case 4 together with the front cover 5 by two setscrews 12, and is connected to the external cord 14. The front cover 5 is formed in a quadrangular shape, and has a cylindrical cap 15 protruding from the center of the front surface by fitting and fixing, and a recessed screw around the cap 15 into which the set screw 12 is inserted. It has a mounting portion 16, and a cap 15 is inserted into the detector mounting hole 3 of the sound absorbing board 1 from the underside of the ceiling via a sleeve 17, and its front end portion projects into the room. A plurality of intake holes 18 are circumferentially formed at the front end of the peripheral surface of the cap 15, so that the interior of the case 4 and the interior of the case 4 communicate with each other. The cap 15 is available in various lengths and can be replaced according to the thickness of the sound absorbing board 1. The sleeve 17 is fitted in the detector mounting hole 3 and is fixed by an adhesive, and the indoor opening end of the detector mounting hole 3 is fixed by a flange 17A integrally projecting on the outer peripheral surface of the front end portion. Covering. The spike 8 used as a fixing means for fixing the temperature / humidity detector 2 may be any thin nail such as a nail and has a sharp tip, and is pushed into the ceiling back surface 1a of the sound absorbing board 1.

FIG. 3 is a cross-sectional view showing a spike attachment structure, showing an example in which the nail 20 is used as a spike. A spike insertion hole 21 through which the nail 20 is inserted is formed near the outer periphery of the front cover 5, and a recess 22 into which the head 20a of the nail 20 can be fitted is connected to the ceiling backside opening of the spike insertion hole 21. The collar 4A of the case 4 prevents the nail 20 from coming out backward. When attaching the front cover 5, the nail 20 is inserted into the spike insertion hole 21, the front cover 5 is fitted into the recess 9, and then the front cover 5 is fixed to the front cover 5 with the set screw 12. .

When mounting the temperature / humidity detector 2 having such a configuration, the cap 15 of the front cover 5 may be fitted into the sleeve 17 from the inside of the ceiling and the spike 8 may be driven into the sound absorbing board 1. 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 in.

Thus, the detector 2 having such a structure does not use screws, mounting brackets, etc., so that the structure is simple and the number of parts is small. Moreover, the mounting work of the detector 2 and the change of the installation location are performed. Etc. are extremely simple and easy, and have the advantage that workability can be improved.

FIG. 4 is a perspective view showing another embodiment of the cap 15. A lid 30 is integrally provided on the front surface of the cap 15, that is, in the center of the side surface of the room through a plurality of supporting portions 31, and a groove 32 is formed around the lid 30. When it is necessary to provide a hole in the front surface of the cap 15 to increase the area of the intake hole, the support portion 31 can be easily damaged and the lid 30 can be removed by pressing the lid 30 strongly.

Although the above embodiment has been described for the case of being applied to the temperature / humidity detector 2, the present invention is not limited to this, and a fire detector, an intrusion detector, etc. can be used as they are. It can be applied, and a plurality of different sensors can be housed in the case 4 to form a composite detector. Further, 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 cylinder structure, and the outer case is the sound absorbing board 1. Alternatively, the sensor may be detachably fixed to the spike 8, the sensor may be housed in the inner case, and the inner case may be fitted and housed in the outer case.

[0013]

[Effect of device]

 As described above, in the ceiling-mounted detector according to the present invention, spikes are projected on the front surface of the case, and the spikes are pushed into the sound absorbing board forming the ceiling. Not only that, the structure is simple, and the work of mounting and removing is remarkably easy, and the workability can be improved. Moreover, the installation location can be easily changed, and the flexibility of layout change can be expanded.

[Brief description of 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 same detector.

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

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

[Explanation of symbols]

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

Claims (1)

[Scope of utility model registration request] 1. A ceiling-mounted detector in which a case accommodating a sensor is embedded and installed in a sound-absorption board on the ceiling, and a spike is projectingly provided on the front surface of the case, and the spike is pushed into the inner surface of the sound-absorption board opposite to the room. A ceiling-mounted detector, wherein the case is detachably fixed to a sound absorbing board.