WO2012176028A1 - Détecteur d'incendie - Google Patents

Détecteur d'incendie Download PDF

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Publication number
WO2012176028A1
WO2012176028A1 PCT/IB2012/001078 IB2012001078W WO2012176028A1 WO 2012176028 A1 WO2012176028 A1 WO 2012176028A1 IB 2012001078 W IB2012001078 W IB 2012001078W WO 2012176028 A1 WO2012176028 A1 WO 2012176028A1
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WO
WIPO (PCT)
Prior art keywords
cover
fire detector
wall
surface side
outer peripheral
Prior art date
Application number
PCT/IB2012/001078
Other languages
English (en)
Japanese (ja)
Inventor
克亘 吉井
小松　幹生
横田　浩
吉鶴　智博
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2012176028A1 publication Critical patent/WO2012176028A1/fr

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors

Definitions

  • the present invention relates to a fire detector.
  • Patent Document 1 a fire detector that detects heat generated by a fire using a heat sensing means.
  • Patent Document 1 a circuit board on which a base 71 attached to a ceiling 81, a body 72 detachably attached to the base 71, and a circuit component 85 constituting a sensing circuit are mounted. 73 is disclosed.
  • the fire detector includes a thermistor 74 as a sensing means, a protector 75 attached to the lower surface of the body 72 to protect the thermistor 74, and a confirmation lamp 76 attached to the body 72 so as to extend from the lower surface of the body 72.
  • the body 72 is formed in a bottomed cylindrical shape that opens upwardly toward the top.
  • a pair of electric wire connecting portions 80 to which signal wires (not shown) drawn from signal wire drawing holes 81a formed in the ceiling 81 are connected are arranged (see FIG. 11).
  • the base 71 is formed in a disc shape, and a cross-shaped lead-out hole 82 is formed in the center thereof.
  • a recessed portion 83 having a trapezoidal cross section is formed in the center of the lower surface of the body 72.
  • a central hole 72 a is formed in the center of the recess 83.
  • the thermistor 74 extends from the center hole 72a of the body 72 to the lower surface.
  • An annular wall 72c projects from the inner bottom surface of the body 72 so as to surround the central hole 72a.
  • an insertion hole 76 a for inserting the confirmation lamp 76 and a drain hole 77 are formed in the bottom wall of the body 72.
  • the inner bottom surface of the body 72 includes a center hole 72a and an insertion hole 76a in plan view so that the center portion of the body 72 is displaced from the center of the body 72 so as to avoid the wire connection portion 80 while enclosing the annular wall 72c.
  • a peripheral wall 72d is provided so as to be substantially symmetrical with respect to the center line passing through the center line 72d.
  • the circuit board 73 is stored in a storage space 84 formed by the peripheral wall 72 d of the body 72.
  • the circuit board 73 is protected by a back cover 79 fastened and fixed to the body 72 by a fixing screw 78 (see FIG. 11).
  • the back cover 79 has an upper surface inclined at an angle ⁇ with respect to the horizontal.
  • smoke detection type fire detectors are known (for example, Patent Document 2).
  • the conventional smoke detection type fire detector body disclosed in Patent Document 2 includes a body 86 fixed to a ceiling surface and a protective cover 87. Yes. Inside the container is an optical base 90 that holds the light-emitting diode 88 and the prism lens 89 in a paired state, and a circuit board 91 that is held by the optical base 90.
  • a photodiode 92 On the circuit board 91, a photodiode 92, a circuit component of a detection circuit that detects the occurrence of a fire from the output of the photodiode 92, and a terminal pin 93 are mounted.
  • the fire detector having the configuration shown in FIG. 10 since the upper surface of the back cover 79 is inclined by an angle ⁇ with respect to the horizontal, even if water is generated on the upper surface of the back cover 79 due to condensation or the like, Water flows down from the back cover 79 to the inner bottom surface of the body 72 by gravity, and drainage is possible from the drain hole 77.
  • the water generated on the upper surface side of the back cover 79 is orthogonal to the center line passing through the center hole 72a and the insertion hole 76a in the plan view of the body 72 (see FIG. 10).
  • the water stays on the outer peripheral surface side of the peripheral wall 72d on the inner bottom surface of the body 72 (main body portion) and does not flow to the drain hole 77.
  • the tip of the terminal pin 93 serves as a connection terminal for external connection.
  • the terminal pin 93 protrudes upward from the body 86, and the body 86 has a dew condensation.
  • water generated on the upper surface side adheres to the terminal pins 93.
  • a fire detector according to the present invention is a fire detector including a main body having a detector that detects the occurrence of a fire, a body that houses the detector, and a plate-like cover that is attached to the body.
  • the detection unit includes a connection terminal that protrudes upward from the cover, and a lowering portion that descends from the vicinity of the center of the cover to the outer peripheral side is provided on the upper surface side of the cover, and the connection A wall portion for preventing water from adhering to the terminal is provided, and the descending portion and the wall portion of the cover provide a guide path for guiding water adhering to the upper surface side of the cover to the outer peripheral side of the cover. It is characterized by comprising.
  • the body has a drainage groove for draining water adhering to the upper surface side of the cover, and the drainage groove is an upper surface of the inner surface side of the drainage groove and a side portion of the drainage groove.
  • a chamfered portion is formed at a site where the sides are connected.
  • the body has a drainage channel for draining water adhering to the upper surface side of the cover, and the drainage channel is located above the lower wall of the body and the outer peripheral edge of the lower wall.
  • the side wall protrudes toward the top, the peripheral wall protrudes upward from the inner bottom surface of the low wall, and the outer peripheral edge of the cover.
  • the chamfered part is formed in the upper step part of the outer periphery of the said cover. Effects of the Invention In the fire detector of the present invention, it is possible to suppress water from staying in the main body and to prevent water from adhering to the connection terminal.
  • the main-body part in the fire sensor of embodiment is shown, (a) is the perspective view which fractured
  • the main part of a fire detector same as the above is shown, (a) is a perspective view seen from the upper side, (b) is a perspective view seen from the lower side. It is a top view which shows the main exterior of a fire detector same as the above.
  • the main part of a fire detector same as the above is shown, (a) is an upper side view, (b) is a left side view, (c) is a front view, (d) is a right side view, and (e) is a lower side view. is there.
  • (a) is a plan view showing a state in which a circuit board provided with a light emitting element and a light guide are housed in the body, and (b) is an enlarged perspective view of a main part of the body.
  • the base of the fire detector same as the above is shown, (a) is a perspective view seen from the upper side, (b) is a perspective view seen from the lower side.
  • the fire detector same as the above is shown, (a) is a perspective view seen from the upper side, (b) is a perspective view seen from the lower side. It is sectional drawing of the fire detector of a prior art example. It is a top view of the detector main body in the fire detector same as the above. It is sectional drawing of the other fire detector of a prior art example.
  • the fire detector of the present embodiment is a fire detector attached to a construction surface such as a ceiling surface, for example, and includes a base 1 (see FIGS. 8 and 9) attached to a construction surface (not shown), a base 1 is provided with a detachable main body 2.
  • This fire detector has a smoke sensing function for sensing smoke and a heat sensing function for sensing heat.
  • the base 1 is formed in a shallow bottomed cylindrical shape whose lower surface side is opened by, for example, synthetic resin.
  • an insertion hole 1c through which a power line (not shown) derived from an opening hole (not shown) on the construction surface and a feed wiring (not shown) can be inserted. It is penetrating.
  • the power supply line and the feed wiring are collectively referred to as an electric wire.
  • two electric wire connecting portions 13 that can be electrically connected to the electric wires are disposed on the main body 2 side of the bottom wall 1a of the base 1 (on the lower surface side in FIG. 8B).
  • one electric wire connecting portion 13 is a first electric wire connecting portion 13a for supplying power, and the other electric wire connecting portion 13 is a second electric wire connecting portion 13b for feed wiring.
  • the first electric wire connecting portion 13a and the second electric wire connecting portion 13b are provided.
  • the present invention is not limited thereto, and for example, only the first electric wire connecting portion 13a may be provided.
  • Each electric wire connection portion 13 is provided with a pair of insertion holes 14 and 14 into which a pair of core wires (not shown) of the electric wire can be inserted.
  • one pair of insertion holes 14 and 14 is a pair of first insertion holes 14a and 14a for power supply, and the other pair of insertion holes 14 and 14 is a pair of second grounding holes.
  • the insertion holes 14b and 14b are used.
  • each electric wire connecting portion 13 is provided between a terminal plate (not shown) that can be electrically connected to the pair of core wires of the electric wire inserted into the pair of insertion holes 14 and 14 and the terminal plate.
  • Two quick-connecting terminals (not shown) comprising lock springs (not shown) that sandwich the pair of core wires of the electric wire are housed.
  • connection terminal portions 17 that can be electrically connected to the main body 2 are arranged on the main body 2 side of the bottom wall 1a of the base 1.
  • the base 1 has the connection terminal portion 17 that can be electrically connected to the main body portion 2.
  • two of the four connection terminal portions 17 are the first connection terminal portions 17a for supplying power, and the remaining two connection terminal portions 17 are the second connection wiring portions 17.
  • the connection terminal portion 17b is used.
  • the first connection terminal portion 17a and the second connection terminal portion 17b are provided.
  • the present invention is not limited to this.
  • only the first connection terminal portion 17a may be provided. .
  • the first connection pieces 15a extending from the respective terminal plates of the respective quick connection terminals of the first electric wire connecting portion 13a are arranged.
  • the tip of the first connection piece 15a is electrically connected to each first connection terminal portion 17a separately.
  • each terminal plate of each quick connection terminal of the second electric wire connecting portion 13b are disposed, and the tip ends of the second connection pieces 15b are electrically connected to the second connection terminal portions 17b separately.
  • each attachment hole 1d is provided with an attachment screw insertion hole 1j through which an attachment screw (not shown) for attaching the base 1 to the construction surface is inserted from the lower surface side of the base 1.
  • each mounting screw is individually inserted from the lower surface side of the base 1 into each mounting screw insertion hole 1j, and each mounting screw is provided on the base 1 side of the construction surface. Temporarily fix in a screw hole (not shown).
  • the main body 2 includes a detection unit 3 that detects the occurrence of a fire, a light emitting element 6 that includes a first light emitting diode, and a light guide that emits light from the light emitting element 6 through the incident surface 7a and exits from the output surface 7b. It has a body 7, a body 5 that houses the detector 3, the light emitting element 6, and the light guide 7, and a plate-like (for example, disc-like) cover 8 that is attached to the body 5.
  • a detection unit 3 that detects the occurrence of a fire
  • a light emitting element 6 that includes a first light emitting diode
  • a light guide that emits light from the light emitting element 6 through the incident surface 7a and exits from the output surface 7b. It has a body 7, a body 5 that houses the detector 3, the light emitting element 6, and the light guide 7, and a plate-like (for example, disc-like) cover 8 that is attached to the body 5.
  • the detection unit 3 includes a circuit board 4 on which a detection circuit (not shown) for detecting the occurrence of a fire is formed, a smoke detection circuit (not shown) formed on the circuit board 4 for detecting smoke, and a second A light projecting element (not shown) made of a light emitting diode, a light receiving element (not shown) made of a photodiode, and an optical base 10 into which a part of each of the light projecting element and the light receiving element can be fitted. Yes.
  • the detection unit 3 includes a heat sensing circuit (not shown) formed on the circuit board 4 for sensing heat and a heat sensing means (not shown) for sensing heat.
  • a heat sensing circuit (not shown) formed on the circuit board 4 for sensing heat
  • a heat sensing means (not shown) for sensing heat.
  • a thermistor or a bimetal may be employed as the heat sensing means.
  • the light projecting element, the light receiving element, and the heat sensing means are mounted on the circuit board 4.
  • the light projecting element and the light receiving element are mounted on the lower surface of the circuit board 4.
  • the heat sensing means is mounted on the lower surface of the circuit board 4 with a heat sensing portion (not shown) protruding downward.
  • the optical base 10 is made of, for example, black synthetic resin, and integrally forms a plate-like (for example, disc-like) bottom plate 10a and a labyrinth wall 10b arranged on the lower surface side of the bottom plate 10a. Configured.
  • the labyrinth wall 10b is composed of a plurality of partition walls having a substantially V-shaped horizontal cross section.
  • the optical base 10 has a smoke sensing chamber A1 having a substantially circular horizontal cross section surrounded by a labyrinth wall 10b.
  • the optical base 10 is formed of black synthetic resin, but it is only necessary to form it with a synthetic resin of a color that does not reflect light.
  • the labyrinth wall 10b has a function of allowing the entrance of smoke from the outside into the smoke detection chamber A1 and preventing the incidence of external light into the smoke detection chamber A1.
  • the optical base 10 has an opening window (not shown) formed at a portion facing each of the light projecting element and the light receiving element mounted on the lower surface of the circuit board 4, and the light is projected to one of the opening windows. Part of the element is fitted.
  • the optical base 10 includes a first prism lens (not shown) that guides light emitted from a light projecting element partially fitted into one opening window to the smoke detection chamber A1, and a smoke detection chamber A1.
  • a second prism lens (not shown) that guides the light inside to the light receiving element through the other opening window is provided.
  • the smoke detection circuit in the fire detector of the present embodiment can detect the presence or absence of smoke based on the output of the light receiving element. Further, in the fire detector of the present embodiment, the detection circuit of the detection unit 3 can detect the occurrence of a fire based on the presence or absence of smoke by the smoke detection circuit.
  • the optical axis of the first prism lens and the optical axis of the second prism lens are set to intersect at a predetermined angle.
  • the optical base 10 has a recess 10 c formed at a portion facing the heat sensing means mounted on the lower surface of the circuit board 4.
  • an insertion hole 10d for inserting the heat sensing part of the heat sensing means is provided.
  • a bottomed cylindrical insect-proof cover 11 that prevents foreign substances such as insects from entering the smoke sensing chamber A1 is disposed on the outer peripheral portion of the labyrinth wall 10b.
  • the insect-proof cover 11 is formed of, for example, an insulating synthetic resin.
  • a mesh portion 12 having a plurality of vent holes 12a that are opened in a lattice shape is formed on the side wall 11b of the insect-proof cover 11.
  • the opening dimension of each ventilation hole 12a formed in the mesh part 12 is set to the dimension which prevents that foreign materials, such as an insect, penetrate
  • the labyrinth wall 10b is housed in the insect-proof cover 11, and the side portion (smoke inlet) of the labyrinth wall 10b is covered with the mesh portion 12, so that the smoke detection of the optical base 10 is performed. Foreign matter can be prevented from entering the chamber A1.
  • the bottom wall 11a of the insect-proof cover 11 is provided with an insertion hole 11e through which the heat sensing part of the heat sensing means is inserted at a portion facing the insertion hole 10d of the optical base 10.
  • a hook 11c extending outward along the radial direction of the bottom wall 11a is formed at the upper end of the side wall 11b of the insect-proof cover 11.
  • Engaging claws 11d protruding upward are provided at a plurality of locations (two locations in the illustrated example) on the outer peripheral portion of the flange portion 11c.
  • the circuit board 4 is provided with an engaging portion 4a composed of a notch portion with which each engaging claw 11d of the collar portion 11c of the insect-proof cover 11 is engaged. Therefore, in the fire detector of the present embodiment, after the labyrinth wall 10b is housed in the insect-proof cover 11, each engagement claw 11d of the collar portion 11c of the insect-proof cover 11 is engaged with each engagement portion 4a of the circuit board 4. Thus, the insect-proof cover 11 is attached to the circuit board 4.
  • the detection unit 3 has a plurality (four in the illustrated example) of connection terminals 18 that can be electrically connected to the connection terminal portions 17 of the base 1.
  • Each connection terminal 18 is electrically connected to the circuit board 4.
  • Each connection terminal 18 can be detachably connected to each connection terminal portion 17 of the base 1.
  • each connection terminal portion 17 of the base 1 is provided with a pair of clamping pieces 16 and 16 (see FIG. 8) capable of clamping the connection terminals 18 separately.
  • four connection terminals 18 are provided.
  • the present invention is not limited to this.
  • two connection terminals 18 may be provided.
  • Each connection terminal 18 is formed by bending an elongated rectangular plate-like metal plate.
  • connection terminal 18 is electrically connected to a terminal portion 18 d sandwiched between the pair of sandwiching pieces 16, 16 of the base 1 and a conductive pattern (not shown) formed on the upper surface of the circuit board 4.
  • the fixing portion 18e has a U-shaped intermediate portion 18c that is connected to the terminal portion 18d and the fixing portion 18e and is inserted into the insertion hole 4b that is provided through the circuit board 4.
  • the fixing portions 18 e of the connection terminals 18 are provided with first fixing screw insertion holes (not shown) through which the fixing screws 19 for fixing the connection terminals 18 to the circuit board 4 are inserted. .
  • the circuit board 4 has a second fixing screw insertion hole (not shown) through which the fixing screw 19 is inserted into a portion of the fixing portion 18e of each connection terminal 18 facing the first fixing screw insertion hole. Is provided.
  • the light emitting element 6 is mounted on the periphery of the upper surface of the circuit board 4.
  • a plurality (two in the illustrated example) of light emitting elements 6 are mounted on the circuit board 4.
  • Each light emitting element 6 is turned on or off based on the presence or absence of the occurrence of a fire by the detection unit 3. That is, each light emitting element 6 is turned on when the detection unit 3 detects the occurrence of a fire.
  • each light emitting element 6 is turned on when the detection unit 3 detects the occurrence of a fire, but in addition to the lighting of each light emitting element 6, the occurrence of a fire May be transmitted to a fire alarm (not shown).
  • the light guide 7 is an elongated plate-shaped molded product made of a transparent synthetic resin formed so that light from the light emitting element 6 enters from the incident surface 7a and exits from the output surface 7b, and the incident surface 7a has the incident surface 7a.
  • the light emitting element 6 is optically coupled.
  • the main body portion 2 includes a plurality (two in the illustrated example) of light guides 7.
  • Each light guide 7 is formed with a reflection surface 7c that reflects the light incident from the incident surface 7a toward the exit surface 7b.
  • each of the side surfaces of each light guide body 7 is provided with a protrusion 7 d for positioning the light guide body 7 on the body 5.
  • the body 5 is formed of, for example, a synthetic resin, and has a bowl-shaped bottom wall 5a having an opening hole 5t at the center, a side wall 5b protruding upward from the outer periphery of the bottom wall 5a, and an opening hole 5t. And a bottomed cylindrical protective cover 5c that protrudes downward from the inner peripheral edge and protects the detection unit 3 and the insect-proof cover 11.
  • fitting portions 20 for fitting the light guides 7 are provided at a plurality of locations (two locations in the illustrated example).
  • Each insertion part 20 is comprised by the step part 20a for inserting the lower surface side of the light guide 7, and a pair of side-plate parts 20c and 20c formed so that the side surface of the light guide 7 might be opposed. Yes.
  • Each side plate portion 20c is provided with an insertion groove 20b for inserting each projection 7d of the light guide 7 separately. Therefore, in the fire detector of this embodiment, the light guide 7 is positioned on the body 5 by inserting the two protrusions 7d of each light guide 7 into the respective insertion grooves 20b of the respective fitting portions 20 separately.
  • a window hole 5d that exposes the light exit surface 7b of the light guide 7 is provided in the bottom wall 5a so as to be opposed to the light exit surface 7b of the light guide 7 fitted in each fitting portion 20. Yes. Therefore, in the fire detector of the present embodiment, the emission surface 7b of the light guide 7 is exposed from the window hole 5d of the bottom wall 5a, so that the blinking state of the light emitting element 6 can be viewed from the outside of the body 5.
  • the substantially cylindrical surrounding wall 21 which protrudes upwards is provided in the inner bottom face of the bottom wall 5a. The outer diameter of the peripheral wall 21 is set to be approximately the same as the outer diameter of the cover 8.
  • the peripheral wall 21 is configured by a semicircular arc-shaped first peripheral wall 21a in plan view and a semicircular arc-shaped second peripheral wall 21b in plan view.
  • the one end side of the 1st surrounding wall 21a and the 2nd surrounding wall 21b is connected with each side-plate part 20c of one fitting part 20, and the other end side of the 1st surrounding wall 21a and the 2nd surrounding wall 21b is the other fitting part 20.
  • the cover 8 is disposed inside the side wall 5b of the body 5 so as to be separated from the side wall 5b and cover the opening hole 5t of the bottom wall 5a.
  • a drain groove 22 is provided so as to surround the cover 8 in a plan view.
  • the drainage groove 22 drains the water generated on the upper surface side of the cover 8 due to adhering water or condensation.
  • the body 5 has a drainage groove 22 for draining water adhering to the upper surface side of the cover 8.
  • the drainage grooves 22 are formed on the outer peripheral surface of the peripheral wall 21, the outer peripheral edge of the cover 8, the inner peripheral surface of the side wall 5 b, the outer peripheral side of the peripheral wall 21 on the inner bottom surface of the bottom wall 5 a, and a pair of fitting portions 20.
  • the side plate portions 20c and 20c are used.
  • the drainage groove 22 in the fire detector of the present embodiment is not provided so as to surround the cover 8 over the entire circumference of the outer peripheral edge of the cover 8 in plan view (except for the portions of the respective fitting portions 20). However, it may be provided so as to surround the cover 8 over the entire circumference.
  • a drain hole 22 a through which water that has flowed into the drain groove 22 is drained to the outside of the body 5 is formed through the bottom of the drain groove 22 on the opening hole 5 t side.
  • a plurality (two in the illustrated example) of drain holes 22 a are provided in the drainage groove 22. Therefore, in the fire detector according to the present embodiment, water attached to the upper surface side of the cover 8 can be drained from the drain hole 22a to the outside of the body 5 through the drainage groove 22.
  • the inner diameter dimension of the side wall 5 b is set slightly larger than the outer diameter dimension of the side wall 1 b of the base 1. In the protective cover 5c, the detection unit 3 and the insect-proof cover 11 are accommodated.
  • the bottom plate 5f of the protective cover 5c is provided with a plurality of ribs 5g that come into contact with the bottom wall 11a of the insect-proof cover 11. That is, the heat sensing means in the fire detector of the present embodiment protrudes downward from the insertion hole 11e provided in the bottom wall 11a of the insect-proof cover 11, and the tip (heat sensing part) is in contact with the bottom wall 11a of the insect-proof cover 11. It arrange
  • a plurality of window holes 5j opened along the circumferential direction are formed in the side plate 5h of the protective cover 5c. The opening size of each window hole 5j is set larger than the opening size of each ventilation hole 12a formed in the mesh part 12 of the insect-proof cover 11.
  • the heat detection circuit of the detection unit 3 in the fire detector of the present embodiment air and smoke flowing into the body 5 from each window hole 5j of the protective cover 5c strike the heat detection unit of the heat detection means. Heat can be sensed through the sensing means.
  • the detection circuit of the detection unit 3 can detect the occurrence of a fire based on the detection of heat by the heat detection circuit. Furthermore, in the fire detector of the present embodiment, the detection circuit can detect the occurrence of a fire based on the presence / absence of smoke by the smoke detection circuit and the detection of heat by the heat detection circuit.
  • the cover 8 is made of, for example, a white synthetic resin.
  • the cover 8 is formed of white synthetic resin.
  • the present invention is not limited to this.
  • the cover 8 is formed of synthetic resin having a color that is more likely to reflect light than black. Also good.
  • the descending portion 8a is formed so as to be inclined by a predetermined angle with respect to the construction surface. That is, the descending portion 8 a has a function of guiding water adhering to the upper surface side of the cover 8 to the drainage groove 22 of the body 5. Therefore, in the fire detector of the present embodiment, it is possible to suppress water from staying on the upper surface side of the cover 8 by providing the descending portion 8 a on the upper surface side of the cover 8. Further, the cover 8 has a chamfered portion 8 b formed at a portion where the upper surface side of the cover 8 and the outer peripheral edge of the cover 8 are connected.
  • the drainage groove 22 of the body 5 is a portion where the inner surface (outer peripheral edge of the cover 8) side of the drainage groove 22 and the upper surface side of the side portion (cover 8) of the drainage groove 22 are connected (that is, outside the cover 8 A chamfered portion 8b is formed on the upper edge of the periphery. Therefore, in the fire detector of the present embodiment, by providing the cover 8 with the chamfered portion 8b, water attached to the upper surface side of the cover 8 can easily flow down from the descending portion 8a to the drainage groove 22, and on the upper surface side of the cover 8. It is possible to further suppress the water from staying.
  • the chamfered portion 8b an R chamfered portion is preferable.
  • the radius of curvature of the chamfered portion 8b is preferably at least 1 mm from the viewpoint of facilitating the flow of water.
  • the chamfered portion 8 b is provided in the cover 8 to suppress the water that has flowed into the drainage groove 22 from returning to the upper surface side of the cover 8 due to the surface tension in the drainage groove 22. This makes it possible to suppress water from staying on the upper surface side of the cover 8.
  • the drawing-in part 26 which draws the water which flowed into the drainage groove 22 into the drainage hole 22a by the capillary phenomenon is provided over the entire circumference of the drainage groove 22 on the opening hole 5t side. .
  • the space enclosed by the outer peripheral part of the cover 8, the peripheral wall 21, and the outer peripheral side of the peripheral wall 21 in the bottom wall 5a comprises the drawing-in part 26 (refer FIG.1 (b)).
  • a projecting piece 8 e that protrudes downward is provided on the outer peripheral portion of the cover 8.
  • the distance between the front end surface of the projecting piece 8 e and the inner bottom surface of the drainage groove 22 is set so that the cover 8 is attached to the body 5.
  • a recess 28 is provided over the entire circumference of the drain groove 22 on the opening hole 5 t side on the opening hole 5 t side in the bottom of the drain groove 22.
  • the distance between the inner bottom surface of the recess 28 and the lower surface of the cover 8 is between the front end surface of the projecting piece 8 e and the inner bottom surface of the drainage groove 22. It is set to be larger than the distance. Therefore, in the fire detector of the present embodiment, the lead-in portion 26 provided over the entire circumference of the drainage groove 22 on the opening hole 5t side draws the water flowing into the drainage groove 22 into the drainage hole 22a by capillary action. Therefore, it is possible to suppress water from staying in the drainage groove 22 and to suppress water from staying in the main body 2.
  • each connection terminal 18 electrically connected to the circuit board 4 is inserted from the lower surface side of the cover 8 into the insertion hole 8d formed in the cover 8 and directed upward. Protruding. In short, each connection terminal 18 protrudes upward from the cover 8.
  • each insertion hole 8d is provided in the protrusion part 8c, it becomes possible to suppress that the water adhering to the upper surface side of the cover 8 adheres to each connection terminal 18.
  • FIG. 8 On the lower surface of the cover 8, a rectangular tube-shaped tube portion 8 f that covers the side portion of each connection terminal 18 faces downward in each portion corresponding to each connection terminal 18 electrically connected to the circuit board 4. Projected.
  • the opening size of each cylindrical portion 8 f is set smaller than the opening size of each insertion hole 4 b of the circuit board 4.
  • a positioning projection 27 for positioning the circuit board 4 on the cover 8 is provided on the lower surface of the cover 8.
  • a notch portion 4 c through which the positioning protrusion 27 is inserted is provided at a portion corresponding to the positioning protrusion 27 of the cover 8.
  • fixing screw holes 8 h into which the fixing screws 19 are screwed are provided in portions corresponding to the respective second fixing screw insertion holes of the circuit board 4.
  • a plurality of (two in the illustrated example) ribs 8g are provided at the central portion of the lower surface of the cover 8 so that the tip portion protrudes downward and contacts the circuit board 4.
  • the fixing screw 19 is inserted from the lower surface side of the circuit board 4 into the second fixing screw insertion hole and the first fixing screw insertion hole of the connection terminal 18 to fix the cover 8.
  • the connection terminals 18 are fixed to the circuit board 4 and screwed into the screw holes 8h, and the circuit board 4 is attached to the cover 8.
  • a recess 5q for accommodating the screw head of the fixing screw 19 is provided in each of the portions corresponding to the second fixing screw insertion hole of the circuit board 4. ing.
  • the wall portion 23 is provided on the upper surface side of the cover 8 to prevent water from adhering to the connection terminal 18.
  • the height dimension of a pair of wall parts 23 and 23 is set larger than the height dimension of the protruding base part 8c.
  • the cover 8 is engaged with the engaging claw 8 j that is engaged with the side wall 5 b of the body 5 so as to cover the opening hole 5 t of the bottom wall 5 a inside the side wall 5 b of the body 5 and away from the side wall 5 b.
  • the cover 8 is engaged with the engaging claw 8 j that is engaged with the side wall 5 b of the body 5 so as to cover the opening hole 5 t of the bottom wall 5 a inside the side wall 5 b of the body 5 and away from the side wall 5 b.
  • a locking portion 5 e that locks each locking claw 8 j of the cover 8 protrudes.
  • the cover 8 is locked to the side wall 5b of the body 5 by locking each locking claw 8j of the cover 8 to each locking portion 5e of the side wall 5b of the body 5. It arrange
  • the cover 8 is attached to the body 5. Further, guide pieces 8k for attaching the cover 8 to the body 5 are provided at a plurality of locations (four locations in the illustrated example) around the periphery of the cover 8.
  • a guide portion 25 into which each guide piece 8 k of the cover 8 can be inserted and removed is formed.
  • Each guide portion 25 is provided with an insertion groove 25a for inserting each guide piece 8k of the cover 8 separately.
  • a protrusion 8 m that can be elastically deformed in the thickness direction of the cover 8 is provided on the periphery of the cover 8 at a portion facing the light guide 7 when attached to the body 5.
  • Each protruding piece 8m extends outward from the peripheral portion of the cover 8 along the radial direction of the cover 8.
  • a projecting portion 9 that faces the reflecting surface 7c of the light guide 7 is formed on the body 5 side of each projecting piece 8m.
  • Each protrusion 9 is provided with an inclined surface 9 a at a portion facing the reflecting surface 7 c of the light guide 7.
  • each fitting portion 20 prevents each protrusion 9 from rotating along the circumferential direction of the cover 8 when the cover 8 is attached to the body 5.
  • each fitting portion 20 of the body 5 has a stopper function for restricting the rotation of the cover 8.
  • the present invention is not limited to this, and for example, the inclined surface 9a of the protrusion 9 and the reflecting surface 7c of the light guide 7 may contact each other.
  • a plurality of first locking protrusions 5k that lock the main body 2 to the base 1 are provided at a plurality of locations (three locations in the illustrated example) on the inner peripheral surface of the side wall 5b of the body 5. Is provided.
  • the 2nd latching protrusion 5m which latches the main-body part 2 to the base 1 is provided in multiple places (in the example of illustration, two places) on the internal peripheral surface of the side wall 5b.
  • a third locking projection 5n see FIG.
  • the outer peripheral surface of the side wall 1b of the base 1 is provided with a first locking hole 1e (see FIG. 8) for locking each first locking projection 5k on the side wall 5b of the body 5.
  • a second locking hole 1f for locking each second locking projection 5m on the side wall 5b of the body 5 is provided on the outer peripheral surface of the side wall 1b of the base 1.
  • a third locking hole 1g for locking the third locking projection 5n on the side wall 5b of the body 5 is provided on the outer peripheral surface of the side wall 1b of the base 1.
  • the locking projections 5k, 5m, and 5n of the side wall 5b of the body 5 are locked to the locking holes 1e, 1f, and 1g of the side wall 1b of the base 1, respectively.
  • the main body 2 is attached to the base 1.
  • the water adhering to the upper surface side of the cover 8 by the descending portion 8a and the pair of wall portions 23, 23 of the cover 8 is the outer peripheral side of the cover 8 (the drainage groove 22 of the body 5).
  • a guide path 24 that guides to the side is configured.
  • the descending portion 8 a that descends from the vicinity of the center portion of the cover 8 to the outer peripheral edge side is provided, and water adheres to the connection terminal 18.
  • Wall portion 23 is provided, and the descending portion 8a of the cover 8 and the wall portion 23 constitute a guide path 24 that guides water adhering to the upper surface side of the cover 8 to the outer peripheral edge side of the cover 8, Compared with the case where only the descending portion 8 a is provided on the upper surface side of the cover 8, it is possible to further suppress water from staying on the upper surface side of the cover 8, and to suppress water from staying in the main body portion 2. And it becomes possible to suppress that water adheres to a connection terminal.
  • the fire detector of this embodiment has a smoke detection function and a heat detection function, it is not limited to this.
  • it may have only a smoke detection function or a heat detection function. It may have a flame sensing function for sensing flame.
  • the preferred embodiments of the present invention have been described above, but the present invention is not limited to these specific embodiments, and various modifications and variations that do not depart from the scope of the claims are possible. It belongs to the category of the present invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)

Abstract

Le détecteur d'incendie objet de la présente invention possède un corps principal (2) comprenant une unité de détection (3) qui détecte le déclenchement d'un incendie, un corps (5) qui contient ladite unité de détection (3) et une plaque de protection (8) qui est fixée audit corps (5). L'unité de détection (3) comporte des bornes de connexion (18) qui font saillie vers le haut à partir de ladite plaque de protection (8). Sur le côté surface supérieure de la plaque de protection (8), on trouve : une section inclinée vers le bas (8a) qui part de la zone centrale de la plaque de protection (8) et qui descend vers le côté bord périphérique extérieur, et une section paroi (23) qui empêche l'eau d'adhérer auxdites bornes de connexion (18). La section inclinée vers le bas (8a) de la plaque de protection (8) et la section paroi (23) forment un chemin de guidage (24) qui guide l'eau ayant adhéré au côté surface supérieure de la plaque de protection (8) vers le côté bord périphérique extérieur de ladite plaque de protection (8).
PCT/IB2012/001078 2011-06-22 2012-06-05 Détecteur d'incendie WO2012176028A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-138516 2011-06-22
JP2011138516A JP5914847B2 (ja) 2011-06-22 2011-06-22 火災感知器

Publications (1)

Publication Number Publication Date
WO2012176028A1 true WO2012176028A1 (fr) 2012-12-27

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JP (1) JP5914847B2 (fr)
WO (1) WO2012176028A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784760A1 (fr) * 2013-03-26 2014-10-01 Hager Security Dispositif d'alarme sonore comprenant, dans une coque, une carte électronique et une sirène sonore
EP2858051A1 (fr) * 2013-10-07 2015-04-08 Tyco Fire & Security GmbH Détecteur de fumée avec barrière de flux d'air
CN104637233A (zh) * 2015-03-09 2015-05-20 宁波尚泰电子有限公司 一种烟雾报警器的探头连接输出部件
EP3514775A4 (fr) * 2016-09-16 2019-09-11 Panasonic Intellectual Property Management Co., Ltd. Embase de capteur d'incendie et capteur d'incendie
US10571312B2 (en) 2017-06-29 2020-02-25 Databuoy Corporation Adjustable mounting system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6350934B2 (ja) * 2014-02-12 2018-07-04 パナソニックＩｐマネジメント株式会社 複合火災感知器
JP7312050B2 (ja) * 2019-08-01 2023-07-20 ニッタン株式会社 熱感知器
GB2586459B (en) * 2019-08-16 2021-10-20 Apollo Fire Detectors Ltd Fire or smoke detector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6451U (fr) * 1988-06-24 1989-01-05
JPH0716290U (ja) * 1993-08-27 1995-03-17 ホーチキ株式会社 火災感知器の排水構造
JP2001216578A (ja) * 2000-01-31 2001-08-10 Nohmi Bosai Ltd 火災感知器
JP2003248876A (ja) * 2002-02-25 2003-09-05 Matsushita Electric Works Ltd 煙感知器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724456Y2 (ja) * 1989-07-27 1995-06-05 株式会社イナックス 洗い場パン
JP2604065Y2 (ja) * 1993-06-12 2000-04-10 パロマ工業株式会社 水ガバナ
JP2000252252A (ja) * 1999-02-26 2000-09-14 Shibaura Mechatronics Corp スピン処理用支持ピン及びスピン処理装置
JP2003248877A (ja) * 2002-02-25 2003-09-05 Matsushita Electric Works Ltd 煙感知器
JP2011034101A (ja) * 2005-04-08 2011-02-17 Murakami Corp 防曇装置および防曇ミラー装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6451U (fr) * 1988-06-24 1989-01-05
JPH0716290U (ja) * 1993-08-27 1995-03-17 ホーチキ株式会社 火災感知器の排水構造
JP2001216578A (ja) * 2000-01-31 2001-08-10 Nohmi Bosai Ltd 火災感知器
JP2003248876A (ja) * 2002-02-25 2003-09-05 Matsushita Electric Works Ltd 煙感知器

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784760A1 (fr) * 2013-03-26 2014-10-01 Hager Security Dispositif d'alarme sonore comprenant, dans une coque, une carte électronique et une sirène sonore
FR3004059A1 (fr) * 2013-03-26 2014-10-03 Hager Security Dispositif d'alarme sonore comprenant, dans une coque, une carte electronique et une sirene sonore
EP2858051A1 (fr) * 2013-10-07 2015-04-08 Tyco Fire & Security GmbH Détecteur de fumée avec barrière de flux d'air
US9058731B2 (en) 2013-10-07 2015-06-16 Tyco Fire & Security Gmbh Smoke detector with airflow barrier
US9483924B2 (en) 2013-10-07 2016-11-01 Tyco Fire & Security Gmbh Smoke detector with airflow barrier
CN104637233A (zh) * 2015-03-09 2015-05-20 宁波尚泰电子有限公司 一种烟雾报警器的探头连接输出部件
EP3514775A4 (fr) * 2016-09-16 2019-09-11 Panasonic Intellectual Property Management Co., Ltd. Embase de capteur d'incendie et capteur d'incendie
US10571312B2 (en) 2017-06-29 2020-02-25 Databuoy Corporation Adjustable mounting system

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