Alarm adapter

Abstract

To provide an adapter for alarms with which it is possible to selectively set the orientation of an alarm relative to a fitting base.SOLUTION: An adapter 4 for alarms is interposed between a fitting base 3 and an alarm 1 which is attachable / removable from the fitting base 3. The fitting base 3 has a base insertion hole 37 that is formed in a lower base wall (lower part 32). The alarm 1 has an alarm terminal 14 that projects upward and can be inserted into the base insertion hole 37. The adapter 4 for alarms has an upper adapter member 41, and a lower adapter member 42 that is connected with the upper adapter member 41. The upper adapter member 41 has an adapter terminal 43 that projects upward and can be inserted into the base insertion hole 37. The lower adapter member 42 has an adapter insertion hole 47 which the alarm terminal 14 can be inserted into. The adapter 4 for alarms has a change part 5 that enables the direction of connection of the lower adapter member 42 to the upper adapter member 41 to be changed.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an alarm adapter that is interposed between a mounting base that is fixed to a ceiling and an alarm that can be attached to the mounting base. [Background technology]

[0002] Conventionally, there is known a mounting structure in which a four-terminal device, which is a gas alarm, is mounted on a mounting base attached to a ceiling (see, for example, Patent Document 1). The mounting base has a long hole, and the power input terminal and input / output terminals of the four-terminal device are inserted into this long hole to mount the four-terminal device on the mounting base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Jikko No. 58-59626 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional mounting structure, it is not possible to selectively set the orientation of the four-terminal device relative to the mounting base.

[0005] The present invention has been made in view of the above points, and has as its object to provide an alarm adapter that allows the orientation of the alarm device relative to the mounting base to be selectively set. [Means for solving the problem]

[0006] The alarm adapter according to claim 1 is an alarm adapter interposed between a mounting base fixed to a ceiling and an alarm that can be attached to the mounting base. The mounting base has a base main body having a base lower wall, and a base insertion hole formed in the base lower wall. The alarm has an alarm main body having an alarm upper wall, and an alarm terminal that protrudes upward from the alarm upper wall and is insertable into the base insertion hole. The alarm adapter has an adapter upper member having an adapter upper wall, and an adapter lower member having an adapter lower wall and connected to the adapter upper member. The adapter upper member has an adapter terminal that protrudes upward from the adapter upper wall and is insertable into the base insertion hole. The adapter lower member has an adapter insertion hole formed in the adapter lower wall, into which the alarm terminal can be inserted. The alarm adapter has a connection direction changer that can change the connection direction of the adapter lower member to the adapter upper member.

[0007] The invention according to claim 2 is an invention dependent on the invention according to claim 1, wherein the connection direction changing portion has a protrusion and a recessed groove. The protrusion is formed on one of the adapter upper member and the adapter lower member, extends circumferentially, and protrudes from the surrounding area. The recessed groove is formed on the other of the adapter upper member and the adapter lower member, extends circumferentially, is recessed from the surrounding area, and receives the protrusion.

[0008] The invention according to claim 3 is an invention dependent on the invention according to claim 1, wherein the coupling direction changing portion has a protrusion and a recess. The protrusion is formed on one of the adapter upper member and the adapter lower member, and is formed in a portion in the circumferential direction and protrudes from the surroundings. The recess is formed on the other of the adapter upper member and the adapter lower member, and is formed in multiple portions in the circumferential direction and recessed from the surroundings, and the protrusion is selectively inserted into one of the multiple portions.

[0009] The invention of claim 4 is an invention dependent on the invention of claim 1, and the connection direction changing portion is provided on the adapter upper member and the adapter lower member and has a male thread portion and a female thread portion that screw together.

[0010] The invention according to claim 5 is an invention dependent on the invention according to claim 1, wherein the coupling direction changing portion has a threaded hole formed in the adapter upper member at a portion in the circumferential direction and a through hole formed in the adapter lower member at a portion in the circumferential direction. At least one of the threaded hole and the through hole is formed in a plurality of portions in the circumferential direction. [Effects of the Invention]

[0011] In the invention of claim 1, the orientation of the adapter lower part relative to the adapter upper part can be selectively set, thereby making it possible to selectively set the orientation of the connection between the mounting base on which the adapter upper part is attached and the alarm device attached to the adapter lower part.

[0012] In the invention according to claim 2, the orientation of the alarm device relative to the mounting base can be set at any angle in the circumferential direction.

[0013] According to the invention of claim 3, the orientation of the alarm device relative to the mounting base can be selectively set to a discrete angle in the circumferential direction.

[0014] In the invention according to claim 4, the orientation of the alarm device relative to the mounting base can be set at any angle in the circumferential direction.

[0015] According to the invention of claim 5, the orientation of the alarm device relative to the mounting base can be selectively set to a discrete angle in the circumferential direction. [Brief explanation of the drawings]

[0016] [Figure 1]Figure 1A is a top view of an alarm device in a first embodiment of the present invention, Figure 1B is a side view of an alarm device in the same embodiment, and Figure 1C is a bottom view of an alarm device in the same embodiment. [Figure 2] FIG. 2 is a side cross-sectional view of the main parts of the ceiling and the mounting base in the embodiment. [Figure 3] FIG. 3 is a bottom view of the upper part of the mounting base in the embodiment. [Figure 4] FIG. 4 is a bottom view of the lower part of the mounting base in the embodiment. [Figure 5] FIG. 5 is a side cross-sectional view of a main part of the alarm adapter in the above embodiment. [Figure 6] 6A and 6B are top and side views of the adapter upper member in the embodiment. [Figure 7] 7A and 7B are side and bottom views of the adapter lower member in the embodiment. [Figure 8] 8A and 8B are side views of a portion of the adapter upper member having a ridge and a cross-sectional side view of a portion of the adapter lower member having a recessed groove, respectively, in the same embodiment. [Figure 9] 9A and 9B are side views of a portion of the adapter upper member having a protrusion and a side cross-sectional view of a portion of the adapter lower member having a recess in the second embodiment. [Figure 10] 10A is a side view of a portion of an adapter upper member having a male thread portion in a third embodiment, and FIG 10B is a side cross-sectional view of a portion of an adapter lower member having a female thread portion in the same embodiment. [Figure 11] FIG. 11 is a side cross-sectional view of the main parts of an alarm adapter according to the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention relates to an alarm adapter. As shown in Figures 1A to 2, an alarm adapter 4 is interposed between a mounting base 3 that is fixed to a ceiling 2, and an alarm device 1 that can be attached to the mounting base 3. An alarm adapter of a first embodiment will be described with reference to the drawings. First, the alarm device 1 will be described.

[0018] (Alarm) The alarm device 1 shown in Figures 1A to 1C is a ceiling-mounted alarm device. The alarm device 1 is primarily attached to the ceiling 2 of a room such as a kitchen in a building. The alarm device 1 is a gas leak alarm that has a gas sensor and an alarm unit, and detects a gas leak and issues a gas leak alarm. The alarm device 1 may also emit various types of information in addition to issuing a gas leak alarm. The alarm device 1 of the first embodiment is equipped with an interface for communicating via a communications network such as the Internet, a control unit that has a microcomputer, and an alarm unit that issues audio alerts. In addition to issuing gas leak alerts, this alarm device 1 is also able to emit weather information, disaster information, etc. obtained via the communications network.

[0019] Furthermore, the alarm device 1 of the first embodiment is equipped with a human presence sensor 12. The human presence sensor 12 detects infrared rays emitted from the human body, and has directionality in detecting the human body. With this alarm device 1, it is possible to have the alarm section issue an alert only when a human body is detected.

[0020] The alarm device 1 is equipped with a resin alarm main body 10 that forms the housing (case). The alarm main body 10 has a cylindrical side wall 101, an alarm upper wall 102 that is formed at the upper end of the side wall 101 and forms the top surface of the alarm main body 10, and an alarm lower wall 103 that is formed at the lower end of the side wall 101 and forms the bottom surface of the alarm main body 10. The shapes of the alarm upper wall 102 and alarm lower wall 103 are circular when viewed from above.

[0021] An electrical circuit board 11 is housed in the alarm main body 10. The electrical circuit board 11 is, for example, a printed wiring board. The above-mentioned gas sensor, alarm section, control section, interface and human presence sensor 12 are mounted on the electrical circuit board 11. The human presence sensor 12 is exposed below the alarm main body 10 via an opening formed in the lower wall 103 of the alarm. Due to its relationship with the other electrical components 13 mounted on the electrical circuit board 11, the human presence sensor 12 is positioned in a position that is shifted from the centre 100 of the lower wall 103 of the alarm in a planar view, towards the edge. For this reason, the position of the human presence sensor 12, which has directional properties when detecting human bodies, is shifted away from the centre 100 of the lower wall 103 of the alarm, and the direction of detection is inclined relative to straight below. The detection area of ​​the human presence sensor 12 in this alarm device 1 is not a symmetrical area with the alarm device 1 at the centre in a planar view. In other words, the detection area of ​​the human presence sensor 12 in the alarm device 1 has directional properties.

[0022] The alarm device 1 has alarm terminals 14. The alarm terminals 14 have a section that protrudes upward from the alarm device upper wall 102. Two power supply terminals 141 and two signal terminals 142 are provided as the alarm terminals 14. As shown in FIG. 1A, the power supply terminals 141 and signal terminals 142 are positioned at equal intervals (every 90 degrees) in the circumferential direction, with the centre 100 of the alarm device upper wall 102 as the centre. The power supply terminals 141 and signal terminals 142 are arranged alternately in the circumferential direction, with pairs of power supply terminals 141 facing each other, and pairs of signal terminals 142 facing each other. The power supply terminals 141 and signal terminals 142 are electrically connected to the electrical board 11 via wiring 15.

[0023] (ceiling) Next, the ceiling 2 to which the mounting base 3 is attached will be described. As shown in Fig. 2, an opening 21 is formed in a ceiling panel 20 that constitutes the ceiling 2, allowing a ceiling space 22 to communicate with an indoor space 23. The mounting base 3 is attached to the portion of the ceiling panel 20 where the opening 21 is formed. A power line 24 and a signal line 25 are arranged in the ceiling space. One end of the power line 24 is connected to a commercial power source of, for example, AC 100V. Furthermore, one end of the signal line 25 is connected to an external central control device or the like.

[0024] (mounting base) The mounting base 3 is a component for attaching the alarm device 1 to the ceiling 2. The mounting base 3 is fixed to the ceiling 2. By attaching the alarm device 1 to the mounting base 3, the alarm device 1 is indirectly attached to the ceiling 2 via the mounting base 3. The mounting base 3 comprises a resin base main body 30 that forms the housing (case). The base main body 30 is made up of an upper part 31 and a lower part 32.

[0025] (Upper part) 3, upper part 31 has a circular shape in a plan view. Upper part 31 is attached to the underside of ceiling board 20 around opening 21. Upper part 31 is attached to ceiling board 20 by an appropriate method such as screw fastening.

[0026] The upper part 31 is formed with a power line insertion hole 311 through which the power line 24 is inserted and a signal line insertion hole 312 through which the signal line 25 passes. A fastener 33 to which the power line 24 is connected and a fastener 34 to which the signal line 25 is connected are attached to the underside of the upper part 31. The power line 24 passes from the attic space 22 through the opening 21 in the ceiling board 20 and the power line insertion hole 311 in the upper part 31 in that order, and the terminal at the end of the power line 24 is attached to the fastener 33 on the underside of the upper part 31 with a fastener 241 such as a screw. The signal line 25 passes from the attic space 22 through the opening 21 in the ceiling board 20 and the signal line insertion hole 312 in the upper part 31 in that order, and the terminal at the end of the signal line 25 is attached to the fastener 34 on the underside of the upper part 31 with a fastener 251 such as a screw.

[0027] A receiving portion 331 is provided on the underside of the upper part 31, which receives the power supply terminal 141 of the alarm device 1. The receiving portion 331 is electrically connected to the fastener 33, and in the first embodiment the receiving portion 331 and fastener 33 are formed as a single unit. By receiving the power supply terminal 141 of the alarm device 1 in the receiving portion 331, electrical continuity is established between the power supply terminal 141 and the power line 24.

[0028] A receiving portion 341 that receives the signal terminal 142 of the alarm device 1 is provided on the underside of the upper part 31. The receiving portion 341 is electrically connected to the fastener 34, and in the first embodiment the receiving portion 341 and fastener 34 are formed as a single unit. By receiving the signal terminal 142 of the alarm device 1 in the receiving portion 341, the signal terminal 142 and the signal wire 25 are brought into electrical continuity.

[0029] Furthermore, fastening holes 35, which are screw holes, are formed on the lower surface of the upper part 31. In the first embodiment, the fastening holes 35 are formed in two places.

[0030] (Lower part) The lower part 32 is attached to the underside of the upper part 31 and covers the underside of the upper part 31. The lower part 32 constitutes the lower wall (base lower wall) of the base main body 30. As shown in FIG. 4, the shape of the lower part 32 when viewed from below (in a plan view) is the same circular shape as the upper part 31. A fastener insertion hole 36 is formed in the lower part 32. The fastener insertion hole 36 of the lower part 32 is aligned with the fastener hole 35 of the upper part 31 (see FIG. 3), and a fastener such as a screw is passed through the fastener insertion hole 36 and screwed into the fastener hole 35 to fix the lower part 32 to the upper part 31.

[0031] Base insertion holes 37 are formed in the lower part 32, penetrating vertically. The base insertion holes 37 include two power supply terminal insertion holes 371 and two signal terminal insertion holes 372. The power supply terminal insertion holes 371 and the signal terminal insertion holes 372 are positioned at equal intervals (every 90 degrees) in the circumferential direction around the center of the lower part 32. The power supply terminal insertion holes 371 and the signal terminal insertion holes 372 are alternately arranged in the circumferential direction, with a pair of power supply terminal insertion holes 371 facing each other and a pair of signal terminal insertion holes 372 facing each other.

[0032] The power supply terminal 141 can be inserted into the power supply terminal insertion hole 371 from below, and the signal terminal 142 can be inserted into the signal terminal insertion hole 372 from below.

[0033] (Attaching the alarm to the mounting base) To attach the alarm device 1 to the mounting base 3, the power supply terminal 141 and signal terminal 142 of the alarm device 1 are inserted upward from their prescribed insertion positions into the power supply terminal insertion hole 371 and signal terminal insertion hole 372 of the mounting base 3, respectively. Next, when the alarm device 1 is rotated, the power supply terminal 141 moves within the power supply terminal insertion hole 371, and the signal terminal 142 moves within the signal terminal insertion hole 372. The tip of the power supply terminal 141 is received in the receiving portion 331 of the mounting base 3, and the tip of the signal terminal 142 is received in the receiving portion 341 of the mounting base 3, and the alarm device 1 is attached to the mounting base 3.

[0034] (alarm adapter) As shown in Figure 5, the alarm adapter 4 is placed between the mounting base 3 and the alarm device 1. The alarm adapter 4 is attached to the mounting base 3. The alarm adapter 4 comprises a resin adapter main body 40 that forms the housing (case). The adapter main body 40 has an adapter upper member 41 and an adapter lower member 42.

[0035] (Upper adapter part) 6A and 6B, the adapter upper member 41 has a cylindrical adapter side wall 411 and an adapter upper wall 412 formed at the upper end of the adapter side wall 411 and constituting the top surface of the adapter main body 40. The adapter upper member 41 has a circular shape in a plan view. The adapter upper member 41 is attached to the mounting base 3.

[0036] The adapter upper member 41 has adapter terminals 43. These have portions that protrude upward from the adapter upper wall 412. The adapter terminals 43 are provided with two power supply terminals 431 and two signal terminals 432. As shown in FIG. 6A , the power supply terminals 431 and the signal terminals 432 are positioned at equal intervals (every 90 degrees) circumferentially around the center of the adapter upper wall 412. The power supply terminals 431 and the signal terminals 432 are arranged alternately in the circumferential direction, with pairs of power supply terminals 431 facing each other and pairs of signal terminals 432 facing each other. The power supply terminals 431 are similar to the power supply terminals 141 of the alarm device 1, and the signal terminals 432 are similar to the signal terminals 142 of the alarm device 1. The upper end of a wire 441 is connected to the power supply terminal 431, and the upper end of a wire 442 is connected to the signal terminal 432.

[0037] The power supply terminals 431 can be inserted into the power supply terminal insertion holes 371 from below, and the signal terminals 432 can be inserted into the signal terminal insertion holes 372 from below.

[0038] To attach the alarm adapter 4 to the mounting base 3, the power supply terminal 431 and the signal terminal 432 of the alarm adapter 4 are inserted upward from their predetermined insertion positions into the power supply terminal insertion hole 371 and the signal terminal insertion hole 372 of the mounting base 3, respectively. Next, when the alarm adapter 4 is rotated, the power supply terminal 431 moves within the power supply terminal insertion hole 371, and the signal terminal 432 moves within the signal terminal insertion hole 372. The tip of the power supply terminal 431 is received in the receiving portion 331 of the mounting base 3, and the tip of the signal terminal 432 is received in the receiving portion 341 of the mounting base 3, and the alarm adapter 4 is attached to the mounting base 3. Attaching the alarm adapter 4 to the mounting base 3 is the same as attaching the alarm device 1 to the mounting base 3.

[0039] (lower part of the adapter) 7A and 7B, the adapter lower member 42 has a main body portion 421 and a cover portion 422. The main body portion 421 is a plate-like member that is circular in plan view.

[0040] A fastener to which wiring 441 is connected and a receiving portion 45 electrically connected to this fastener, and a fastener to which wiring 442 is connected and a receiving portion 46 electrically connected to this fastener are attached to the underside of the main body portion 421. The wiring 441 and wiring 442 pass through openings formed in the main body portion 421, and terminals formed on the bottom ends of the wiring 441 and wiring 442 are attached to the fasteners with fasteners such as screws. The receiving portion 45 is similar to the receiving portion 331 of the mounting base 3, and the receiving portion 46 is similar to the receiving portion 341 of the mounting base 3. By receiving the power supply terminal 141 of the alarm device 1 in the receiving portion 45, the power supply terminal 141 is established in electrical conduction with the power supply terminal 431 via the receiving portion 45 and the wiring 441, and by receiving the signal terminal 142 of the alarm device 1 in the receiving portion 46, the signal terminal 142 is established in electrical conduction with the signal terminal 432 via the receiving portion 46 and the wiring 442.

[0041] The cover portion 422 has a cylindrical side wall 423 and an adapter lower wall 424 formed at the lower end of the side wall 423 and constituting the bottom portion of the adapter main body 40. The adapter lower member 42 has a circular shape in a plan view. The main body portion 421 and the cover portion 422 are fixed together by an appropriate method such as screwing, threading, welding, or adhesive. For example, a male thread formed on the outer peripheral end surface of the main body portion 421 is screwed into a female thread formed on the inner surface of the side wall 423, thereby fixing the main body portion 421 to the cover portion 422.

[0042] The adapter lower wall 424 is formed with adapter insertion holes 47 into which the alarm terminals 14 can be inserted. The adapter insertion holes 47 are provided with two power supply terminal insertion holes 471 and two signal terminal insertion holes 472. The power supply terminal insertion holes 471 and the signal terminal insertion holes 472 are positioned at equal intervals (every 90 degrees) circumferentially around the center of the adapter lower wall 424. The power supply terminal insertion holes 471 and the signal terminal insertion holes 472 are arranged alternately in the circumferential direction, with pairs of power supply terminal insertion holes 471 facing each other and pairs of signal terminal insertion holes 472 facing each other. The power supply terminal insertion holes 471 are similar to the power supply terminal insertion holes 371 of the mounting base 3, and the signal terminal insertion holes 472 are similar to the signal terminal insertion holes 372 of the mounting base 3. The power supply terminal 141 can be inserted into the power supply terminal insertion hole 471 from below, and the signal terminal 142 can be inserted into the signal terminal insertion hole 472 from below.

[0043] To attach the alarm device 1 to the alarm adapter 4, the power supply terminal 141 and signal terminal 142 of the alarm device 1 are inserted upward from their predetermined insertion positions into the power supply terminal insertion hole 471 and signal terminal insertion hole 472 of the alarm adapter 4, respectively. Next, when the alarm device 1 is rotated, the power supply terminal 141 moves within the power supply terminal insertion hole 471, and the signal terminal 142 moves within the signal terminal insertion hole 472. The tip of the power supply terminal 141 is received in the receiving section 45 of the alarm adapter 4, and the tip of the signal terminal 142 is received in the receiving section 46 of the alarm adapter 4, and the alarm device 1 is attached to the alarm adapter 4. Attaching the alarm device 1 to the alarm adapter 4 is the same as attaching the alarm device 1 to the mounting base 3.

[0044] (Connection direction change part) The alarm adapter 4 has a connection direction changing section 5 that makes it possible to change the connection direction of the adapter lower member 42 relative to the adapter upper member 41. The connection direction changing section 5 in the first embodiment has a ridge 51 and a recessed groove 52.

[0045] The ridges 51 are formed on the adapter upper member 41, extend in the circumferential direction, and protrude from the surrounding area. Specifically, the ridges 51 extend around the entire outer periphery of the adapter side wall 411 of the adapter upper member 41, protruding outward from adjacent portions above and below this outer periphery.

[0046] The recessed groove 52 is formed in the adapter lower part 42, extends in the circumferential direction, and has the recessed ridge 51 inserted therein from the periphery. Specifically, the recessed groove 52 extends along the entire periphery of the inner circumferential surface of the side wall 423 of the adapter lower part 42, and is recessed outward from adjacent portions above and below this inner circumferential surface.

[0047] The adapter upper member 41 and the adapter lower member 42 are connected by inserting the side wall 423 into the adapter side wall 411 and fitting the protrusion 51 into the recessed groove 52 by elastic deformation of the adapter side wall 411 and the side wall 423 .

[0048] Because the adapter upper member 41 has the ridge 51 and the adapter lower member 42 has the recessed groove 52, it is possible to selectively set the orientation of the adapter lower member 42 relative to the adapter upper member 41 in a plan view. This makes it possible to selectively set the connection orientation of the mounting base 3 to which the adapter upper member 41 is attached, and the alarm device 1 attached to the adapter lower member 42.

[0049] The alarm device 1 in the first embodiment is equipped with a human presence sensor 12, and the detection area of ​​the human presence sensor 12 has directionality. For this reason, by providing the alarm adapter 4 with a connection orientation change section 5, the alarm device 1 can be set in the optimal orientation relative to the mounting base 3.

[0050] Furthermore, the ridges 51 and recessed grooves 52 allow the orientation of the alarm device 1 relative to the mounting base 3 to be set at any angle in the circumferential direction.

[0051] In the first embodiment, the outer peripheral surface of the lower end of the adapter side wall 411 of the adapter upper member 41 and the inner peripheral surface of the upper end of the side wall 423 of the adapter lower member 42 face each other. However, the inner peripheral surface of the lower end of the adapter side wall 411 of the adapter upper member 41 and the outer peripheral surface of the upper end of the side wall 423 of the adapter lower member 42 may face each other.

[0052] In the first embodiment, the protrusions 51 are formed on the outer peripheral surface and the recessed grooves 52 are formed on the inner peripheral surface of the opposing inner and outer peripheral surfaces of the adapter upper member 41 and the adapter lower member 42. However, the recessed grooves 52 may be formed on the outer peripheral surface and the protrusions 51 may be formed on the inner peripheral surface of the opposing inner and outer peripheral surfaces of the adapter upper member 41 and the adapter lower member 42.

[0053] Second Embodiment Next, the alarm adapter 4 according to the second embodiment will be described with reference to Figure 9. The alarm adapter 4 according to the second embodiment is largely the same as the alarm adapter 4 according to the first embodiment. Therefore, explanations that overlap with the first embodiment will be omitted, and the differences will mainly be described.

[0054] In the first embodiment, the connection direction changing portion 5 has the protrusion 51 and the recessed groove 52. In contrast, in the second embodiment, the connection direction changing portion 5 has the protrusion 53 and the recessed portion 54.

[0055] The protrusion 53 is formed on the adapter upper member 41 and is formed at any part in the circumferential direction so as to protrude from the surrounding area. Specifically, the protrusion 53 protrudes outward from any part of the outer circumferential surface of the adapter side wall 411 of the adapter upper member 41 beyond the surrounding area.

[0056] The recesses 54 are formed in the adapter lower member 42, recessed from the surrounding area at any of a plurality of portions in the circumferential direction, and the protrusions are selectively inserted into any of the plurality of portions. Specifically, the recesses 54 are recessed outward from the surrounding inner circumferential surface at a plurality of equally spaced locations along the entire circumference of the inner circumferential surface of the side wall 423 of the adapter lower member 42.

[0057] The adapter upper member 41 and the adapter lower member 42 are connected by inserting the side wall 423 into the adapter side wall 411 and fitting the protrusion 53 into the recess 54 by elastic deformation of the adapter side wall 411 and the side wall 423 .

[0058] Because the adapter upper member 41 has the protrusion 53 and the adapter lower member 42 has the recess 54, it is possible to selectively set the orientation of the adapter lower member 42 relative to the adapter upper member 41 in a plan view. This makes it possible to discretely and selectively set the connection angle between the mounting base 3 to which the adapter upper member 41 is attached and the alarm device 1 attached to the adapter lower member 42.

[0059] In the second embodiment, the outer peripheral surface of the lower end of the adapter side wall 411 of the adapter upper member 41 and the inner peripheral surface of the upper end of the side wall 423 of the adapter lower member 42 face each other. However, the inner peripheral surface of the lower end of the adapter side wall 411 of the adapter upper member 41 and the outer peripheral surface of the upper end of the side wall 423 of the adapter lower member 42 may face each other.

[0060] In the second embodiment, the protrusions 53 are formed on the outer peripheral surface and the recesses 54 are formed on the inner peripheral surface of the opposing inner and outer peripheral surfaces of the adapter upper member 41 and the adapter lower member 42. However, the recesses 54 may be formed on the outer peripheral surface and the protrusions 53 may be formed on the inner peripheral surface of the opposing inner and outer peripheral surfaces of the adapter upper member 41 and the adapter lower member 42.

[0061] (Third embodiment) Next, an alarm adapter 4 according to a third embodiment will be described with reference to Figure 10. The alarm adapter 4 according to the third embodiment is largely the same as the alarm adapter 4 according to the first embodiment. Therefore, explanations that overlap with the first embodiment will be omitted, and the differences will mainly be described.

[0062] In the first embodiment, the connection direction changing portion 5 has the ridge 51 and the recessed groove 52. In contrast, in the third embodiment, the connection direction changing portion 5 has a male thread portion 55 and a female thread portion 56.

[0063] The male thread portion 55 is formed in the adapter upper member 41. Specifically, the male thread portion 55 is formed on the outer circumferential surface of the adapter side wall 411 of the adapter upper member 41.

[0064] The female thread portion 56 is formed in the adapter lower member 42. Specifically, the female thread portion 56 is formed on the inner circumferential surface of the side wall 423 of the adapter lower member 42.

[0065] The adapter upper member 41 and the adapter lower member 42 are connected by screwing the male thread portion 55 and the female thread portion 56 together.

[0066] Since the adapter upper member 41 has a male thread portion 55 and the adapter lower member 42 has a female thread portion 56, the orientation of the adapter lower member 42 relative to the adapter upper member 41 can be set to any angle in the circumferential direction when viewed in a plane.

[0067] In the third embodiment, the adapter upper member 41 has an outer peripheral surface and a male thread portion 55, and the adapter lower member 42 has an inner peripheral surface and a female thread portion 56. However, the adapter lower member 42 may have an outer peripheral surface and a male thread portion 55, and the adapter upper member 41 may have an inner peripheral surface and a female thread portion 56.

[0068] Alternatively, a fastener 48 made of a screw may be screwed into a threaded hole 425 formed in the adapter lower member 42, and the tip of the fastener 48 may be pressed against the adapter upper member 41. In this way, a frictional force is generated between the tip of the fastener 48 and the adapter upper member 41, making it difficult for the adapter lower member 42 to rotate relative to the adapter upper member 41 and the adapter lower member 42 to fall off from the adapter upper member 41.

[0069] (Fourth embodiment) Next, an alarm adapter 4 according to a fourth embodiment will be described with reference to Figure 11. The alarm adapter 4 according to the fourth embodiment is largely the same as the alarm adapter 4 according to the first embodiment. Therefore, explanations that overlap with the first embodiment will be omitted, and the differences will mainly be described.

[0070] In the first embodiment, the connection direction changing portion 5 has the ridge 51 and the recessed groove 52. In contrast, in the fourth embodiment, the connection direction changing portion 5 has a screw hole 57 and a through hole 58.

[0071] The screw holes 57 are formed in any part in the circumferential direction of the adapter upper member 41. Specifically, the screw holes 57 are formed in two places in the circumferential direction of the adapter upper member 41.

[0072] The through holes 58 are formed in any part of the circumferential direction of the adapter lower member 42. Specifically, the through holes 58 are formed in a plurality of locations spaced apart at equal intervals over the entire circumferential direction of the adapter lower member 42.

[0073] The adapter upper member 41 and the adapter lower member 42 are connected by inserting a fastener 59 made of a screw into the through-hole 58 of the adapter lower member 42 from below and screwing it into the threaded hole 57 of the adapter upper member 41.

[0074] The adapter upper member 41 has screw holes 57 and the adapter lower member 42 has through holes 58, and by forming multiple screw holes 57 and / or multiple through holes 58, it is possible to selectively set the orientation of the adapter lower member 42 relative to the adapter upper member 41 in a plan view. This makes it possible to discretely and selectively set the connection angle between the mounting base 3 to which the adapter upper member 41 is attached, and the alarm device 1 attached to the adapter lower member 42.

[0075] (Variation) The room in which the alarm device 1 is installed is not limited to a kitchen. The alarm device 1 can be installed on the ceiling 2 of any room. There are no particular restrictions on the shape, size, material, etc. of the alarm device main body 10. A significant effect can be achieved if the alarm device 1 has some kind of directionality, but the alarm device 1 does not necessarily have to be directional.

[0076] The human presence sensor 12 is not limited to an infrared detection type. The alarm device 1 is not limited to one that issues a gas leak alert. The alarm device 1 may have an alert unit and issue an alert of some kind. Alerts issued by the alert unit are not limited to audio alerts, and may also be alerts using light, display, etc. Furthermore, the alarm device 1 does not have to be equipped with an interface to a communications network or a human presence sensor 12, or may be equipped with other functions.

[0077] The shape, size, material, etc. of the base body 30 (upper part 31 and lower part 32) are not particularly limited.

[0078] The receiving portion 331 and the fastener 33 may be formed as separate bodies and then electrically connected by being coupled together. The receiving portion 341 and the fastener 34 may be formed as separate bodies and then electrically connected by being coupled together.

[0079] The fastening holes 35 may be holes that pass through the upper part 31, or may be recesses that do not pass through the upper part 31. The positions, number, etc. of the fastening holes 35 formed in the upper part 31 are not particularly limited.

[0080] The shape, size, material, etc. of the adapter main body 40 (the adapter upper member 41 and the adapter lower member 42) are not particularly limited.

[0081] The above-described embodiment is merely one of various embodiments of the present invention, and the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0082] 1 alarm 10 Alarm body 100 center 101 Side wall 102 Alarm upper wall 103 Lower wall of alarm 11 Electrical board 12 Human Sensor 13 Electrical Components 14 Alarm terminal 141 Power supply terminal 142 Signal terminal 15 Wiring 2. Ceiling 20 Ceiling Panel 21 Aperture 22 Attic space 23 Indoor space 24 Power line 241 Fasteners 25 Signal line 251 Fasteners 3 Mounting base 30 Base body 31 Upper part 311 Power line insertion hole 312 Signal line insertion hole 32 Lower part 33 Fasteners 331 Receiving part 34 Fasteners 341 Receiving part 35 Fixing hole 36 Fastener insertion hole 37 Base insertion hole 371 Power terminal insertion hole 372 Signal terminal insertion hole 4 Alarm adapter 40 Adapter body 41 Adapter upper part 411 Adapter side wall 412 Adapter top wall 42 Adapter lower part 421 Main body 422 Cover part 423 Side wall 424 Adapter bottom wall 425 screw hole 43 Adapter terminal 431 Power supply terminal 432 Signal terminal 441 Wiring 442 Wiring 45 Receiving part 46 Receiving part 47 Adapter insertion hole 471 Power terminal insertion hole 472 Signal terminal insertion hole 48 Fastener 5 Connection direction change section 51 protrusion 52 Groove 53 Protrusion 54 Recess 55 Male thread 56 Female thread 57 screw hole 58 Through Hole 59 Fasteners

Claims

1. An alarm adapter interposed between a mounting base fixed to a ceiling and an alarm that can be attached to the mounting base, the mounting base includes a base body having a base lower wall and a base insertion hole formed in the base lower wall; The alarm device comprises an alarm device main body having an alarm device upper wall, an alarm device terminal that protrudes above the alarm device upper wall and is insertable into the base insertion hole, and a human presence sensor that is provided in the alarm device main body and whose detection direction is inclined relative to straight down, The alarm adapter comprises an adapter upper member having an adapter upper wall, and an adapter lower member having an adapter lower wall and connected to the adapter upper member, the adapter upper member has an adapter terminal that protrudes upward from the adapter upper wall and is insertable into the base insertion hole; the adapter lower member has an adapter insertion hole formed in the adapter lower wall into which the alarm terminal can be inserted, The alarm adapter has a connection direction changing section that enables the direction of connection of the adapter lower member to the adapter upper member to be changed. Alarm adapter.

2. An alarm adapter interposed between a mounting base fixed to a ceiling and an alarm that can be attached to the mounting base, the mounting base includes a base body having a base lower wall and a base insertion hole formed in the base lower wall; The alarm device has an alarm device main body having an alarm device upper wall, and an alarm device terminal that protrudes upward from the alarm device upper wall and is insertable into the base insertion hole, The alarm adapter comprises an adapter upper member having an adapter upper wall, and an adapter lower member having an adapter lower wall and connected to the adapter upper member, the adapter upper member has an adapter terminal that protrudes upward from the adapter upper wall and is insertable into the base insertion hole; the adapter lower member has an adapter insertion hole formed in the adapter lower wall into which the alarm terminal can be inserted, the alarm adapter has a connection direction changing section that enables the direction of connection of the adapter lower member to the adapter upper member to be changed, The connection direction change unit is a protrusion formed on one of the adapter upper member and the adapter lower member, extending in a circumferential direction and protruding from the periphery; a recessed groove formed in the other of the adapter upper member and the adapter lower member, extending in the circumferential direction, recessed from the periphery, and into which the protrusion is inserted; Alarm adapter.

3. An alarm adapter interposed between a mounting base fixed to a ceiling and an alarm that can be attached to the mounting base, the mounting base includes a base body having a base lower wall and a base insertion hole formed in the base lower wall; The alarm device has an alarm device main body having an alarm device upper wall, and an alarm device terminal that protrudes upward from the alarm device upper wall and is insertable into the base insertion hole, The alarm adapter comprises an adapter upper member having an adapter upper wall, and an adapter lower member having an adapter lower wall and connected to the adapter upper member, the adapter upper member has an adapter terminal that protrudes upward from the adapter upper wall and is insertable into the base insertion hole; the adapter lower member has an adapter insertion hole formed in the adapter lower wall into which the alarm terminal can be inserted, the alarm adapter has a connection direction changing section that enables the direction of connection of the adapter lower member to the adapter upper member to be changed, The connection direction change unit is a protrusion formed on one of the adapter upper member and the adapter lower member, the protrusion being formed at a circumferential portion thereof and protruding from the surrounding area; a recess formed in the other of the adapter upper member and the adapter lower member, the recess being formed in a plurality of portions in any one of the circumferential directions and recessed from the surroundings, the protrusion being selectively inserted into any one of the plurality of portions; Alarm adapter.

4. An alarm adapter interposed between a mounting base fixed to a ceiling and an alarm that can be attached to the mounting base, the mounting base includes a base body having a base lower wall and a base insertion hole formed in the base lower wall; The alarm device has an alarm device main body having an alarm device upper wall, and an alarm device terminal that protrudes upward from the alarm device upper wall and is insertable into the base insertion hole, The alarm adapter comprises an adapter upper member having an adapter upper wall, and an adapter lower member having an adapter lower wall and connected to the adapter upper member, the adapter upper member has an adapter terminal that protrudes upward from the adapter upper wall and is insertable into the base insertion hole; the adapter lower member has an adapter insertion hole formed in the adapter lower wall into which the alarm terminal can be inserted, the alarm adapter has a connection direction changing section that enables the direction of connection of the adapter lower member to the adapter upper member to be changed, The connection direction change unit is The adapter upper member and the adapter lower member have a male thread portion and a female thread portion that are screwed together. Alarm adapter.

5. An alarm adapter interposed between a mounting base fixed to a ceiling and an alarm that can be attached to the mounting base, the mounting base includes a base body having a base lower wall and a base insertion hole formed in the base lower wall; The alarm device has an alarm device main body having an alarm device upper wall, and an alarm device terminal that protrudes upward from the alarm device upper wall and is insertable into the base insertion hole, The alarm adapter comprises an adapter upper member having an adapter upper wall, and an adapter lower member having an adapter lower wall and connected to the adapter upper member, the adapter upper member has an adapter terminal that protrudes upward from the adapter upper wall and is insertable into the base insertion hole; the adapter lower member has an adapter insertion hole formed in the adapter lower wall into which the alarm terminal can be inserted, the alarm adapter has a connection direction changing section that enables the direction of connection of the adapter lower member to the adapter upper member to be changed, The connection direction change unit is a screw hole formed in the adapter upper member at a circumferential position; a through hole formed in the adapter lower member at any part in the circumferential direction, At least one of the screw holes and the through holes is formed at a plurality of portions in the circumferential direction. Alarm adapter.

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