JP2572375Y2 - Sensor mounting structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor mounting structure,
In particular, the present invention relates to a sensor mounting structure in which sensor mounting is simplified. 2. Description of the Related Art Detectors such as fire detectors, gas leak detectors and various security sensors are often mounted on a mounting surface such as a ceiling surface or a wall surface, and are easily mounted on the mounting surface. Various sensor mounting structures have been proposed. For example, JP-A-58-94089 and JP-A-60-192094 disclose a sensor mounting structure for simple mounting. However, these mounting structures are complicated, and the mounting operation requires time and effort. Therefore, the applicant of the present application has proposed a sensor mounting structure as disclosed in Japanese Utility Model Laid-Open No. 1-72691, in which mounting is further simplified. In this mounting structure, as shown in FIG. 1 can be attached to the ceiling plate 6. A sensor D is built in the cylindrical portion 12 of the base body 1. At the center of the upper end of the base body 1, a lead wire hole 14 for wiring, a holding member 3 provided to bridge the lead wire hole 14, and one end of the holding member 3 are rotatably supported. A pair of press fittings 2 formed in a U-shape and a floating piece 4 inserted into an insertion hole provided on the support side of the press fitting 2 are provided. This is a mounting structure for mounting the base body 1 including the sensor on the ceiling plate 6 by tightening the screws with a single screw 5. [0004] The conventional sensor mounting structure as described above can be mounted on a ceiling plate by screwing work, so that workability is remarkably improved. In such a sensor mounting structure, the sensor D and the base main body 1 are integrally mounted on the ceiling plate 6 and mounted after all the conditions around the mounting portion are aligned. By the way, in recent years, the appearance of hotels, condominiums, offices and the like has been increasingly emphasized, and the interior ceiling is often finished with a decorative cloth or a paint finish. In this case, the determination of the appearance specification such as the material and the pattern strongly reflects the preference of the owner, so that the specification determination tends to be delayed, and there is a lot of pressure during the construction period. Further, since the mounting of the sensor is performed after finishing the mounting surface such as a ceiling surface, if the specification is delayed, the construction period of the equipment is also pressed, and the work is required all night. Further, since the ceiling surface, which is the mounting surface of the sensor, is very dirty with dust or cigarette smoke, the ceiling surface is often cleaned up. At the time of cleanup, replacement of the sensor is performed with wiring replacement work. However, the above-described conventional mounting structure has a problem that mounting is complicated and workability is deteriorated. SUMMARY OF THE INVENTION It is an object of the present invention to provide a mounting structure for a sensor which can be mounted firmly, accurately and easily, and can be mounted before finishing the mounting surface. In order to solve the above-mentioned problems, a sensor mounting structure according to the present invention has a first cylindrical portion having a U-shaped section fixed to a mounting portion. A sensor is attached to the inner surface of the first cylindrical portion at a predetermined interval, and at least a part of the inner surface of the first cylindrical portion has a slope with respect to the mounting direction of the sensor. A base made of an elastic material having a protrusion formed thereon, and a base having a shape similar to the U-shaped portion of the first cylindrical portion of the base, the thickness of which is smaller than the predetermined interval. The first cylindrical portion has an inner surface of the U-shaped portion of the first cylindrical portion and an outer peripheral surface of the sensor. An opening for receiving the projection at a position corresponding to the projection; A decorative plate covering the entirety of the base,
When the decorative plate is inserted between the base and the sensor, the slope of the protrusion of the base is pressed by the decorative plate to elastically bend the protrusion outward, thereby opening the protrusion. It is configured so as to be inserted into the section and to fix the space between the base and the decorative plate. In the present invention, a base is mounted on a mounting surface, a sensor is mounted on the base, and the base has a size and shape covering a wider area than a portion where the base contacts the mounting surface. By mounting and locking the decorative plate, the installation work of the sensor before finishing the wall surface such as the ceiling surface is possible. More specifically, the base is made of an elastic material, has a first cylindrical portion having a U-shaped section fixed to a mounting portion such as a ceiling, and the sensor is provided inside the first cylindrical portion. It is attached with a predetermined distance from the side. Also, the base
A projection having a slope with respect to the mounting direction of the sensor is formed on at least a part of the inner surface of the first cylindrical portion. Further, the decorative plate covers the whole of the attached base and the sensor, and has a shape similar to the U-shaped portion of the first cylindrical portion of the base, and has a thickness smaller than a predetermined interval. It has a 2nd cylindrical part of a character-shaped part. The decorative plate is inserted and attached between the inner surface of the first cylindrical portion of the base and the outer peripheral surface of the sensor in a substantially close contact state, and an opening into which the protrusion enters at a position corresponding to the protrusion of the base in the mounted state. Having a part. Then, when the decorative plate is inserted between the base and the detector, the slope of the protrusion of the base is pressed down by the tip of the decorative plate to elastically bend the protrusion outward, and the protrusion enters the opening. And fix the gap between the base and the decorative plate. Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a main part of an embodiment of a detector mounting structure according to the present invention, showing an example of mounting a fire detector D on a ceiling surface. In FIG. 1, components denoted by the same reference numerals as those in FIG. 3 indicate the same components. In the present embodiment, an adapter and a decorative plate are used as members used when attaching the sensor. The adapter includes a base body 1, a holding member 2, a holding member 3, a floating piece 4, and the like. Referring to FIG. 1, after the ceiling before finishing is stretched,
The cylindrical portion 12 of the base body 1 as the first cylindrical portion is inserted into the mounting opening of the ceiling plate 6 while the holding metal 2 is in the position indicated by the dotted line. After that, the flange 11 is brought into contact with the ceiling plate 6 and the screw 5 is screwed, so that the substantially U-shaped holding metal fitting 2 is pressed against the back surface of the ceiling plate 6 to fix the adapter to the ceiling plate 6. . A sensor D is mounted in the tubular part 12 of the adapter part. A decorative plate 20 sized to cover the flange 11 is mounted on the base body 1. The decorative plate 20 includes a flange 21 having a width wider than the flange 11 of the base body 1, and a cylindrical portion 22 as a second cylindrical portion having a depth shorter than the depth of the cylindrical portion 12 of the base body 1. Having. At this time, the cylindrical portion 12 of the base body 1
The distance A between the inner diameter of the sensor D and the outer diameter of the sensor D is a sufficient distance for the cylindrical part 22 of the decorative plate 20 to be inserted. Is provided with a protrusion 13 as shown in the drawing, which can be elastically moved in the thickness direction. On the other hand, an opening 23 is provided in the cylindrical portion 22 of the decorative plate 20 at a position corresponding to the protrusion 12 of the cylindrical portion 12. Therefore, the decorative plate 20 is connected to the base body 1.
, The projection 13 enters the opening 23, and both are locked. Here, by setting the shape and dimensions so that a slight gap d occurs between the flange 21 of the decorative plate 20 and the ceiling 6, it is possible to securely mount the decorative plate even after the ceiling cloth or the like is pasted. I do. FIG. 2 is an exploded perspective view of the adapter, the sensor D, and the decorative plate 20 in this embodiment. In the embodiment described above, the sensor is mounted on the ceiling plate as follows. After the ceiling before finishing is stretched, screws 5 are tightened and the base body 1
Is attached to the ceiling plate 6, and the detector D is fixed. This installation and fixation can be performed even if the ceiling specification is undecided. Therefore, even when the ceiling specification is undecided, the sensor can be installed and inspected (fire-fighting inspection, etc.). Will have no effect. After the specification is determined, the ceiling cloth whose specification has been determined is stuck on the base body 1 of the adapter, the adapter part is cut off with a cutter or the like, and the decorative plate 20 is attached. In the case of painting such as changing the painting of the ceiling surface, painting is performed with the dust-proof cover of the sensor attached, and then the decorative plate 20 is attached. At this time, there is no need to remove the sensor. This also has an advantage that even when a special request treatment such as adjusting the appearance of the sensor mounting to the pattern of the ceiling is performed, only a part of the components needs to be replaced. As described above, the sensor mounting structure according to the present invention mounts the sensor on the base (adapter) part and then mounts the decorative plate on the sensor. The installation work of the sensor can be performed before finishing the wall surface, etc., and even if the ceiling surface is finished after construction, it can be covered with the decorative plate, so that the delay in the construction period due to the delay in the specification decision can be eliminated. In addition, not only is it possible to mount firmly, accurately and easily, but also it is possible to mount the mounting surface before finishing.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing an embodiment of a sensor mounting structure according to the present invention. FIG. 2 is an exploded perspective view of a sensor mounting structure in the embodiment of FIG. FIG. 3 is a side sectional view of a main part of a conventional sensor mounting structure. [Description of Signs] 1 Base body 2 Presser fitting 3 Holding member 4 Floating piece 5 Screw 6 Ceiling plate 11, 21 Flange 12, 22 Cylindrical part 13 Projecting part 14 Communication hole 20 Decorative plate 23 Opening

Claims (1)

(57) [Claims for registering a utility model] A first cylindrical portion having a U-shaped section fixed to an attachment portion, and a sensor is provided at a predetermined distance from an inner surface of the first cylindrical portion. A base made of an elastic material having at least a part of an inner surface of the first cylindrical portion formed with a protrusion having a slope with respect to a mounting direction of the sensor; With a shape similar to the U-shaped part of the cylindrical part,
A second tubular portion having a U-shaped section whose thickness is smaller than the predetermined interval; and between the inner surface of the U-shaped portion of the first tubular portion and the outer peripheral surface of the sensor. A decorative plate that is inserted and attached in a substantially close contact state, has an opening into which the projection enters at a position corresponding to the projection of the base in the attached state, and covers the entirety of the attached base. When the decorative plate is inserted between the base and the sensor, the slope of the protrusion of the base is pressed by the decorative plate to elastically flex the protrusion outward, and the protrusion is A sensor mounting structure, wherein the sensor mounting structure is configured to be inserted into an opening to fix the space between the base and the decorative plate.