Fire detector

Abstract

To provide a fire sensor capable of improving workability when installing the fire sensor.SOLUTION: A fire detector to be installed at a fire monitoring site having an installation plane to which a magnet can be coupled by a magnetic attraction force, the fire detector including a first detector base having a first surface fixedly installed on the installation plane and a second surface opposite to the first surface, a second detector base screwed to the second surface of the first detector base, and a detector body detachably coupled to the second detector base in a state of being screwed to the first detector base, the first sensor base is provided with a magnet part that can be coupled to the installation flat surface by a magnetic attraction force and a double-sided tape part that can be coupled to the installation flat surface by an adhesive force on the first surface, and is fixedly installed on the installation flat surface by using both the magnetic attraction force by the magnet part and the adhesive force by the double-sided tape part.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a fire detector having a detector base and a detector body, and more particularly to a fire detector that improves the ease of installation at a fire monitoring site. [Background technology]

[0002] Fire detectors, such as smoke detectors, flame detectors, and heat detectors, are installed on the ceiling or other areas of fire monitoring sites to detect smoke, flames, and heat, thereby detecting a fire. These fire detectors are installed by attaching the detector body to a detector base installed on the ceiling or other area.

[0003] A fire detector is configured so that the detector body can be removed from the detector base and reattached when inspecting or replacing it (see, for example, Patent Document 1).

[0004] In the fire detector disclosed in Patent Document 1, a pair of mating terminals is provided on the detector base, and a pair of metal fittings is provided on the detector main body. The detector main body is mechanically and electrically fixed to the detector base by fitting it into the detector base and rotating it so that the pair of metal fittings fit into the pair of mating terminals. The detector main body can also be removed from the detector base by rotating it in the opposite direction to when it is fixed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-147774 Summary of the Invention [Problem to be solved by the invention]

[0006] The fire detector disclosed in Patent Document 1 is fixed to an installation surface such as a ceiling using screws, similar to general fire detectors. However, depending on the area to be monitored for fires, it may be difficult to drill holes to secure the detector to the installation surface using screws.

[0007] For example, when installing a fire detector on a deck plate, it was necessary to drive anchors into the concrete and drill holes to secure the detector with screws. However, drilling holes could damage cables and wiring inside the concrete, so improvements in workability were desired.

[0008] Furthermore, depending on the installation environment, there may be cases where a fire detector needs to be installed under a steel staircase, etc. In this case, it is necessary to drill holes in the steel staircase to fasten the detector with screws, and improvements in workability were desired.

[0009] The present disclosure has been made to solve the above-mentioned problems, and aims to obtain a fire detector that can improve the ease of installation when installing the fire detector. [Means for solving the problem]

[0010] The fire detector disclosed herein is a fire detector to be installed at a fire monitoring site having an installation surface to which a magnet can be attached by magnetic attraction, and is configured with a first detector base having a first surface that is fixedly installed on the installation surface and a second surface opposite the first surface, a second detector base that is screwed to the second surface of the first detector base, and a detector main body that can be detachably attached to the second detector base that is screwed to the first detector base, and the first detector base has, on its first surface, a magnet portion that can be attached to the installation surface by magnetic attraction, and a double-sided tape portion that can be attached to the installation surface by adhesive force, and the first detector base is fixedly installed on the installation surface by combining the magnetic attraction force of the magnet portion and the adhesive force of the double-sided tape portion. [Effects of the Invention]

[0011] According to the present disclosure, it is possible to obtain a fire detector that can improve the ease of installation when installing the fire detector. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic diagram illustrating a fire detector according to a first embodiment of the present disclosure. [Figure 2] 2 is an explanatory diagram of a first detector base, which is a characteristic configuration of the fire detector according to the first embodiment of the present disclosure. FIG. [Figure 3] 1 is an exploded perspective view of a fire detector according to a first embodiment of the present disclosure. [Figure 4] FIG. 2 is a schematic diagram illustrating a cross-sectional configuration of a second sensor base according to the first embodiment of the present disclosure. [Figure 5] 1 is a schematic diagram illustrating a connection state of each component of a fire detector according to a first embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, preferred embodiments of the fire detector of the present disclosure will be described with reference to the drawings. The fire detector disclosed herein has a technical feature in that the base surface of the fire detector is fixed to the installation surface at the fire monitoring site by combining the magnetic attraction force of a magnet with the adhesive force of double-sided tape, thereby achieving the significant effect of improving workability by eliminating the process of drilling holes in the installation surface.

[0014] Embodiment 1 The fire detector according to the present disclosure is used to detect fires at a fire monitoring site, and includes smoke detectors, flame detectors, heat detectors, etc. In other words, the fire detector according to the present disclosure means a detector that includes a detector base that is fixedly installed at the fire monitoring site, and a detector main body that is detachably coupled to the detector base.

[0015] 1 is a schematic diagram showing a fire detector according to a first embodiment of the present disclosure. The fire detector 10 according to the first embodiment is configured to include a detector base 100 and a detector main body 200. Furthermore, the detector base 100 according to the first embodiment has a two-stage configuration including a first detector base 110 and a second detector base 120.

[0016] The first sensor base 110 has a first surface 110a that is fixed to an installation plane 1 at the fire monitoring site, and a second surface 110b opposite to the first surface 110a. The second sensor base 120 is screwed to the second surface 110b of the first sensor base 110. The screwed state will be described later with reference to FIG. 5.

[0017] The sensor main body 200 is detachably coupled to the second sensor base 120 which is screwed to the first sensor base 110. Note that a conventional method can be used as the structure for attaching and detaching the sensor main body 200 to the second sensor base 120, and as this is not a characteristic feature of the present disclosure, a detailed description thereof will be omitted.

[0018] The fire detector 10 according to the first embodiment has a technical feature in the structure for fixing the first detector base 110 to the installation plane 1 at the fire monitoring site, which will be described in detail with reference to FIG.

[0019] Fig. 2 is an explanatory diagram of the first detector base 110, which is a characteristic configuration of the fire detector 10 according to the first embodiment of the present disclosure. Fig. 2(A) is an explanatory diagram showing the configuration of the first surface 110a, which is the installation surface relative to the installation surface 1, and Fig. 2(B) is an explanatory diagram showing the configuration of the second surface 110b, which is the opposite installation surface.

[0020] 2(A), a magnet part 111, a double-sided tape part 112, and a screw hole 113 are arranged on a first surface 110a of the first sensor base 110. The magnet part 111 is made of a magnet on the first surface 110a that can be coupled to the installation surface 1 by magnetic attraction.

[0021] The double-sided tape portion 112 is formed on the first surface 110a with an adhesive that can be bonded to the installation surface 1 by its adhesive force. The screw holes 113 are provided on the second surface 110b of the first sensor base 110 for screwing the second sensor base 120 to the second surface 110b, and are not used for bonding to the installation surface 1.

[0022] The installation surface 1 for mounting the fire detector 10 of this embodiment 1 is intended to be a surface to which a magnet can be attached by magnetic attraction force, and specific examples include flat surfaces such as deck plates and steel staircases.

[0023] 2(A) illustrates an example in which the magnet portion 111 and the double-sided tape portion 112 are rectangular and configured as a pair. However, the shape, number, and arrangement of the magnet portion 111 and the double-sided tape portion 112 can be appropriately changed in design depending on the installation surface 1, the installation environment, etc.

[0024] Also, as shown in FIG. 2(B), on the second surface 110b side, only screw holes 113 are arranged for screwing the second sensor base 120 to the second surface 110b of the first sensor base 110.

[0025] 2(A) and 2(B) show an example in which four screw holes 113 are arranged inside the magnet part 111 and the double-sided tape part 112. However, the size, number, and arrangement of the screw holes 113 can be appropriately changed in design depending on the installation surface 1, the installation environment, etc.

[0026] The first sensor base 110 has the configuration shown in Figure 2(A), and can be fixedly installed with the first surface 110a on the installation surface 1 by using both the magnetic attraction force of the magnet part 111 and the adhesive force of the double-sided tape part 112.

[0027] If first surface 110a is fixed to installation surface 1 using only magnet portion 111, the magnetic attraction force of magnet portion 111 may decrease over time.

[0028] Furthermore, when the first surface 110a is fixed to the installation surface 1 using only the double-sided tape portion 112, the adhesive strength is weak at the beginning of installation and there is a risk of it peeling off, but after a certain period of time has passed, the adhesive hardens and the surface becomes more firmly fixed.

[0029] Therefore, by using the magnetic attraction force of the magnet part 111 and the adhesive force of the double-sided tape part 112 together, the weaknesses of each can be complemented, and the first sensor base 110 can be prevented from falling off the installation surface 1.

[0030] Fig. 3 is an exploded perspective view of the fire detector 10 according to the first embodiment of the present disclosure. Specifically, Fig. 3 shows the fire detector 10 exploded into three views: a first detector base 110 shown in Fig. 3(A), a second detector base 120 shown in Fig. 3(B), and a detector main body shown in Fig. 3(C).

[0031] Figure 3(A) is an oblique view similar to Figure 2(B), and shows the state in which only the screw holes 113 for screwing the second sensor base 120 to the second surface 110b of the first sensor base 110 are arranged on the second surface 110b side.

[0032] Fig. 3(B) is a perspective view showing the configuration of the second sensor base 120. Fig. 4 is a schematic view showing the cross-sectional configuration of the second sensor base 120 according to the first embodiment of the present disclosure. The second sensor base 120 will be described with reference to the perspective view shown in Fig. 3(B) and the schematic view of the cross-sectional configuration shown in Fig. 4.

[0033] The second sensor base 120 is configured with a bottom wall having an upper surface 120a and a lower surface 120b, and an outer peripheral wall 120c. The upper surface 120a corresponds to the surface facing the second surface 110b of the first sensor base 110, and the lower surface 120b is the surface opposite to the upper surface 120a and corresponds to the surface on the sensor main body 200 side.

[0034] The outer peripheral wall 120c is provided with a notch 121 for guiding the cable 2 from the outside onto the upper surface 120a of the bottom wall. On the other hand, the bottom wall is provided with a passage hole 122 and a through hole 123.

[0035] The passing hole 122 is a hole for passing the cable 2 guided onto the upper surface 120a to the lower surface 120b side. The through hole 123 is a hole for passing a screw when fastening the second sensor base 120 to the second surface 110b of the first sensor base 110.

[0036] The cable 2 is wired from the outside into the fire detector 10 through a notch 121 provided in the outer wall 120c of the second detector base 120 and a through hole 122 provided in the bottom wall of the second detector base 120.

[0037] Each wire in the cable 2 is connected to a respective terminal provided in the second sensor base 120, and when the sensor main body 200 is attached to the second sensor base 120, it is mechanically and electrically connected to the terminal provided in the sensor main body 200, but this is not shown in the figure.

[0038] Furthermore, the second sensor base 120 is configured so that, when attached to the first sensor base 110, the cable 2 can be guided inward through the notch 121. In other words, the bottom wall provided inside the outer peripheral wall 120c of the second sensor base 120 has a space equivalent to the thickness of the cable 2 so that the cable 2 can be passed over the upper surface 120a of the bottom wall, and the bottom wall is provided at approximately the middle in the height direction of the outer peripheral wall 120c.

[0039] The through hole 123 is positioned opposite the screw hole 113 provided in the first sensor base 110, and is provided to allow a screw to pass through to fasten the second sensor base 120 to the second surface 110b of the first sensor base 110.

[0040] 3(C) is a perspective view showing the configuration of the sensor main body 200. The sensor main body 200 is provided with a confirmation light 201 on the outer peripheral side wall. The confirmation light 201 is provided almost flush with the outer peripheral side wall without protruding from the side wall. In reality, the sensor main body 200 contains built-in circuit components and the like for detecting and alerting to a fire, but as conventional technology can be applied, these components are not shown in the figure.

[0041] Furthermore, a conventional method can be applied to the structure for attaching and detaching the sensor main body 200 to the second sensor base 120, and detailed illustrations of the attachment and detachment structure are also omitted. By attaching the sensor main body 200 to the second sensor base 120, the second sensor base 120 and the sensor main body 200 are mechanically and electrically fixed together.

[0042] 5 is a schematic diagram showing the connection state of each component of the fire detector 10 according to the first embodiment of the present disclosure. The first detector base 110 is fixed to the installation surface 1 by using both the magnetic attraction force of the magnet part 111 and the adhesive force of the double-sided tape part 112. In other words, the first detector base 110 is connected to the installation surface 1 that can be connected to the magnet part 111 by magnetic attraction force, without using screws.

[0043] On the other hand, the second sensor base 120, into which the cable 2 is pulled from the outside through the notch 121, is fastened to the first sensor base 110 using the screw 3. At this time, the tip of the screw 3 is contained within the first sensor base 110 and does not protrude from the first surface 110a. In this way, the first sensor base 110 has a thickness that allows the tip of the screw 3 to fit inside.

[0044] In order to prevent the tip of the screw 3 from protruding from the first surface 110a, it is also possible to drill the screw hole 113 from the second surface 110b side so that it does not penetrate all the way to the first surface 110a.

[0045] By realizing the connection state shown in Figure 5, even if the installation plane 1 corresponds to a flat portion such as a deck plate or steel staircase, there is no need to perform drilling work on the deck plate, steel staircase, etc.

[0046] Furthermore, by using both the magnetic attraction force of the magnet part 111 and the adhesive force of the double-sided tape part 112, the first sensor base 110 can be more firmly attached to the installation surface 1 compared to using only one of them.

[0047] Furthermore, the sensor main body 200 can be attached to and detached from the second sensor base 120 by adopting a detachable structure similar to that of the conventional method.

[0048] As described above, according to embodiment 1, it is possible to fix the fire detector to the installation surface to which the magnet can be attached by magnetic attraction, without using screws, by combining the magnetic attraction force of the magnet part and the adhesive force of the double-sided tape part.

[0049] Furthermore, by using both the magnetic attraction force of the magnet part and the adhesive force of the double-sided tape part, the fire detector can be more firmly installed on the installation surface 1 compared to using only one of them. As a result, there is no need to perform processing work to fasten screws to the installation surface, and a fire detector with improved installability can be realized.

[0050] Furthermore, it is possible to select a magnet with an appropriate magnetic attraction force and a double-sided tape with an appropriate adhesive force depending on the installation environment, and also to adopt appropriate design values ​​for the shape, number, and arrangement of the magnet and double-sided tape. In other words, it is possible to obtain a fire detector with a degree of freedom in design depending on the installation environment.

[0051] Specifically, it is conceivable that the fixing strength can be increased to a desired value or greater by using a commercial magnet as the magnet part and commercial double-sided tape as the double-sided tape part. [Explanation of symbols]

[0052] 1 Installation surface, 2 Cable, 3 Screw, 10 Fire detector, 100 Detector base, 110 First detector base, 110a First surface, 110b Second surface, 111 Magnet part, 112 Double-sided tape part, 113 Screw hole, 120 Second detector base, 120a Upper surface of bottom wall, 120b Lower surface of bottom wall, 120c Outer wall, 121 Notch, 122 Passage hole, 123 Through hole, 200 Detector body, 201 Confirmation light.

Claims

1. A fire detector to be installed at a fire monitoring site having an installation surface to which a magnet can be coupled by magnetic attraction, a first sensor base having a first surface fixedly installed on the installation plane and a second surface opposite to the first surface; a second sensor base that is screwed to the second surface of the first sensor base; a sensor body that is detachably coupled to the second sensor base in a state where the second sensor base is screwed to the first sensor base; The present invention is configured to include: The first sensor base comprises: a magnet portion that can be coupled to the installation surface by the magnetic attraction force and a double-sided tape portion that can be coupled to the installation surface by an adhesive force are provided on the first surface; The magnetic attraction force of the magnet part and the adhesive force of the double-sided tape part are used in combination to fix the device to the installation surface. fire detector.

2. The second sensor base comprises: The outer wall and a bottom wall provided inside the outer peripheral wall and having an upper surface facing the second surface of the first sensor base and a lower surface opposite the upper surface; Equipped with The outer peripheral wall is provided with a notch for guiding an external cable onto the upper surface of the bottom wall. The bottom wall is provided with a passage hole for passing the cable guided onto the upper surface to the lower surface side, and a through hole for passing a screw when screwing the second sensor base to the second surface of the first sensor base. The fire detector according to claim 1.

3. The flat surface of the deck plate or steel staircase is the installation plane.

3. The fire detector according to claim 1 or 2.

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