JP2591323Y2 - Adapter base for exposed sensor base - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention relates to an adapter base for an exposed type sensor base that is exposed and mounted on a surface of a mounting surface such as a ceiling surface.

[Prior Art] A fire sensor in the case of an exposed installation is composed of an exposed sensor base fixed to a surface of a mounting surface such as a ceiling surface, and a sensor head engaged with the exposed sensor base. Although configured, this sensor is required by law to periodically perform a functional test. Therefore, the fire detector must be periodically removed from the ceiling or the like.

However, since this fire detector is exposed and installed in a high place such as a ceiling surface, it is impossible for an operator to directly remove the fire detector by hand. Therefore, the fifth
As shown in the figure, a detachable device 102 is provided at the tip of the extendable rod 100, the detachable device 102 is fitted to the frame portion 103a of the sensor head 103, and the extendable rod 100 is turned in a predetermined direction with the hand 104. ,
Blade holder 105a and sensor head 1 of exposed sensor base 105
The engagement with the blade fitting 103b of 03 is released.

After the function test is completed, the sensor head 1
03 is fitted, and the blade bracket 103b is engaged with the blade bracket 105a while aligning the sensor head 103 and the exposed sensor base 105 exposed on the ceiling surface 106.

[Problem to be Solved by the Invention] In the conventional fire detector, as described above, both are engaged while aligning the detector head 103 with the exposed detector base 105. The container base 105 is the ceiling surface 106
, It is very difficult to align with a long and hard-to-operate telescopic rod. In particular, if there is an obstacle 107 directly below the sensor head 105, work cannot be performed directly below the obstacle 107. For this reason, the telescopic rod 100 is unavoidably extended obliquely, and the sensor head 103 is brought close to the exposure-type sensor base 105 in a state where the sensor head 103 is inclined, so that the alignment between the two becomes increasingly difficult, and much work time is required. Also, in the case of a high ceiling such as a hall, it is more difficult to align the position just below the sensor base 105.

In view of the above circumstances, this invention makes it possible to easily align the sensor head with the sensor base that is exposed on the ceiling surface, etc., and that it can also be used as is with conventional fire detectors. An object of the present invention is to provide an adapter base for a container base. Another object is to prevent the smooth flow of smoke and hot airflow from being obstructed by using the adapter base.

[Means for Solving the Problems] The present invention provides a guide cylinder having an outer surface in contact with a surface of a mounting surface such as a ceiling surface and a bottom surface on which an exposed sensor base is mounted inside; Provided on the outer periphery of
An exposing sensor base adapter base comprising: a side wall for facilitating the flow of smoke or the like; wherein the height of the guide cylinder is formed higher than that of the exposing sensor base, and the side wall is formed. An exposed type sensor which is inclined so as to spread outward toward a bottom surface, one end of which is fixed to an edge of an opening of the guide cylinder, and the other end of which is located on the same plane as the bottom surface. Adapter base for base,
It is.

[Operation] The exposed sensor base is brought into contact with the inside of the bottom surface of the guide cylinder, and both are fixed to the ceiling surface or the like via screws or the like. When the sensor head is fitted to the tip of the telescopic rod and the sensor head is inserted into the guide cylinder, the sensor head is aligned while being guided by the cylinder wall. In this state, the telescopic rod is turned to engage the sensor head with the exposed sensor base. The smoke and the hot air flow smoothly toward the fire detector while being guided by the inclined side wall provided on the outer periphery of the guide cylinder.

[Embodiment] An embodiment of the present invention will be described with reference to the accompanying drawings, in which the same reference numerals have the same names and functions.

The exposed sensor base adapter base 1 includes a guide cylinder 2 into which the fire detector F can be inserted, a bottom surface 4 that forms one end of the guide cylinder 2 and that fixes the exposed sensor base 10. , Is provided. A slit 8 for draining water is formed in the cylindrical wall 2a of the guide cylindrical body 2. The cylindrical wall 2a whereas the perpendicular L relative to the bottom surface 4, and the angle theta ₁ slope.
Therefore, the diameter of the cylindrical body 2 gradually increases from the bottom surface 4 side toward the opening 2b side of the guide cylindrical body 2, so that the sensor head 11 can be easily inserted.

The opening 2b has an edge 2c with a radius R, so that the sensor head 11 can easily enter the guide cylinder 2. The height H of the cylindrical body 2 is formed higher than the height h of the exposure sensor base 10. On the outer periphery of the guide cylinder 2, there is provided a side wall 3 expanding toward the bottom surface 4 for smoothing the flow of smoke and the like and for guiding the sensor head 11 at the time of mounting. As shown in FIGS. 1 and 2, the side wall 3 is inclined so as to spread outward toward the bottom surface 4 side, and one end thereof is fixed to the opening 2b edge 2c of the guide cylinder 2, and the other. The end is located on the same plane as the bottom surface 4, and the other end and the bottom surface are so-called flush. The bottom surface 4 has a signal line insertion opening 7 into which a signal line 14 is inserted, a projection 6 fitted into a fixing hole 10a in a ceiling or the like of the exposed sensor base 10, A screw insertion hole 5 communicating with the screw hole 10b is provided.

Next, a case where the fire detector F is mounted on the ceiling 21 using the adapter base 1 will be described.

The exposed sensor base 10 is inserted into the guide cylinder 2 of the adapter base 1, and the fixing hole of the exposed sensor base 10 is fixed.
The projection 6 is fitted to 10 a, and the exposed sensor base 10 is fixed to the inside 4 a of the bottom surface 4. Then, both are aligned and become concentric. In this state, the fixing screw 17 is inserted into the exposed sensor base 10 and the screw insertion hole 5 of the bottom surface 4 and is screwed and fixed to the ceiling 21 together. An outlet box 12 communicating with the electric wire pipe 13 is provided in the ceiling 21.
, And a signal line 14 is inserted therein. As described above, since the adapter base 1 is sandwiched and fixed between the exposed sensor base 10 and the ceiling 21 by the fixing screw 17, the adapter base 1 does not fall off or slip even when an impact is applied. Absent. Next, the sensor head 11 is fitted to the detachable device at the end of the telescopic rod, and the front end of the telescopic rod is moved toward the exposed sensor base 10. And the sensor head
When 11 comes into contact with the edge 2c of the opening 2b of the guide cylinder 2, the edge 2c is guided into the guide cylinder 2 by the roundness of the edge 2c, and the state shown by the dashed line is obtained. When the telescopic rod is further pushed up in this state, the sensor head 11 is moved to the cylindrical wall 2a of the guide cylindrical body 2.
The exposure sensor base 10 is approached and aligned while being guided. At this time, there is an adjustment gap T between the guide cylinder 2 and the sensor head 11, so that both can be easily aligned. In this way, when the two are aligned, the telescopic rod is turned in a predetermined direction to rotate the sensor head.
When the rotary 11 is rotated, the blade 16 of the head 11 is engaged with the blade holder 15 of the exposure-type sensor base 10 to be in a state shown by a solid line. In the above embodiment, the protrusion 6 functions to align the sensor base 10 concentrically with the guide cylinder 2. However, the protrusion 6 is not provided, and the screw insertion hole 5 is connected to the screw hole 10b of the sensor base 10. It may be provided at a position where it is aligned, and may be adjusted concentrically.

The embodiment of the present invention is not limited to the above. For example, as shown in FIG.
With the side facing the vertical wall 52a, the housing 59 of the exposed sensor base 58
The form may be formed the guide cylinder 52 sensor head 60 guide portion and the guide wall 52b which the opening side inclined angle theta ₂ outside with respect to the vertical wall 52a of the. When the exposed type sensor base 58 is press-fitted into the adapter base 51, the exposed type sensor base 58 is fixed to the bottom surface 54 of the guide cylinder 52, and its side surface is in close contact with the vertical wall 52a. By simply inserting the exposed sensor base 58 into the base 51, both are concentric. Reference numeral 55 denotes a screw insertion hole for inserting a fixing screw for fixing the sensor base 58 and the adapter base 51 together and fixing the sensor base 58 to the ceiling, and 57 denotes a signal line insertion port. Further, the angle theta ₂ is is formed larger than the angle theta ₁ of the embodiment, it is easy to insert into the sensor head 60 of the guide cylinder 52. In the above embodiment, the screw communication holes 5 and 55 are provided, but these are omitted and the sensor bases 10 and 58 are omitted.
The signal line insertion ports 7, 57 may be formed in the bottom surfaces 4, 54 with a diameter larger than the distance between the pair of holes, namely, the fixing holes 10a and the screw holes 10b.

[Effects of the Invention] Since the invention is configured as described above, when the exposed sensor base is fixed to the bottom surface of the guide cylinder and the sensor head is moved toward the opening of the guide cylinder, The head approaches the exposed sensor base while being guided by the guide cylinder, and becomes concentric with the base. For this reason, the engagement between the two can be performed easily, so that the time required for attaching and detaching the fire detector when exposing and installing it can be reduced as compared with the conventional example. Therefore,
Inspection work or the like that involves attaching and detaching a fire detector can be performed efficiently in a short time.

In addition, since this exposed type sensor base adapter base can be used for all fire detectors that are large enough to be accommodated in the guide cylinder, the old fire detector currently in use can be used without any change. It can also be widely used for different types of new fire detectors. Further, since the adapter base has a side wall provided on the outer periphery of the guide cylinder, the flow of smoke and the like is smooth.

[Brief description of the drawings]

1 to 3 are views showing an embodiment of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a longitudinal sectional view of an adapter base for an exposed type sensor base of FIG. 1, and FIG. FIG. 4 is a plan view of the adapter base, FIG. 4 is a longitudinal sectional view showing another embodiment and corresponds to FIG. 2, and FIG. 5 is a perspective view showing a conventional example. 1, 51: Adapter base for exposed sensor base 2, 52: Guide cylinder 4, 54: Bottom surface 10, 58 ... Exposed sensor base 11, 60: Sensor head F: Fire detection vessel

Claims (4)

(57) [Scope of request for utility model registration] A guide tube having an outer surface in contact with a surface of a mounting surface such as a ceiling surface and a bottom surface on which an exposed sensor base is mounted; and a guide tube provided on an outer periphery of the guide tube.
An exposed sensor base adapter base comprising: a side wall for facilitating the flow of smoke or the like; wherein the height of the guide cylinder is formed higher than that of the exposed sensor base, and the side wall is formed. Is exposed so as to extend outward toward the bottom surface, one end of which is fixed to an edge of the opening of the guide cylinder, and the other end is located on the same plane as the bottom surface. Adapter base for sensor base. 2. The guide cylinder according to claim 1, wherein a diameter of the guide cylinder is gradually increased from a bottom side toward an opening, and a drainage slit is formed in a cylinder wall of the guide cylinder.
The adapter base for the exposure-type sensor base as described. 3. The device according to claim 1, wherein the bottom surface has a projection fitted into a fixing hole of the exposed sensor base.
Or an adapter base for an exposure type sensor base according to 2. 4. The device according to claim 1, wherein the bottom surface is provided with an insertion hole communicating with the screw hole of the exposed sensor base.
4. An adapter base for an exposure-type sensor base according to 2 or 3.