JP2011248547A - Attachment structure of batteries in fire sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure of batteries in a fire sensor that can easily make a structure for battery storage part available for common use.SOLUTION: The attachment structure of batteries is used in a battery-operated smoke sensor 1, and the smoke sensor 1 is provided with the main body of a sensor that detects fire, a power supply unit 20 having batteries 21 that supply power to the main body of the sensor, and a sensor cover 30 that accommodates the main body of the sensor on the side of the monitored area and the power supply unit 20 on the reverse side to the monitored area. The power supply unit 20 is integrally provided with: a main body side cover 22 disposed on the side of the main body of the sensor; an external side cover 23 disposed on the reverse side to the side of the main body of the sensor; and batteries 21 disposed between the main body side cover 22 and the external side cover 23.

Description

  The present invention relates to a battery mounting structure in a wireless fire detector.

  Fire detectors can be broadly classified into heat detection type and smoke detection type based on the fire detection principle.

  A heat-sensing fire sensor is composed of a sensor body and a sensor cover, and the sensor body is configured by mounting a thermistor on the terminal board. The heat | fever emitted from is sensed (for example, refer patent document 1).

  In addition, the smoke detection type fire detector includes a detector main body and a sensor cover, and the sensor main body includes a terminal board, a smoke detection unit main body, an insect net, and a labyrinth. ing. The smoke detector main body is provided with a light emitting part and a light receiving part, and the light receiving part is arranged so as not to directly receive light emitted from the light emitting part. A smoke detection space (chamber) is formed in the labyrinth, and outside air can flow into this chamber through an insect screen, but disturbance light incident on the chamber may be blocked by the labyrinth and enter the light receiving section. Is prevented. In such a configuration, when smoke does not exist in the outside air flowing into the chamber, light emitted by the light emitting unit is not received by the light receiving unit, but when smoke exists in this outside air, Since the light emitted from the light emitting unit is scattered by the smoke particles and received by the light receiving unit, the smoke concentration can be calculated based on the amount of light received by the light receiving unit. When the concentration is above a certain level, it is determined that a fire has occurred, and a fire detection signal is output (for example, see Patent Document 2).

  Furthermore, such fire detectors are roughly classified into wired type and wireless type based on signal transmission / reception modes. The wired fire detector is connected to a receiver via an electric wire, receives power supply from the receiver via the electric wire, and transmits a fire detection signal. On the other hand, a wireless fire detector receives power from a battery built in itself, and wirelessly transmits a fire detection signal between the receiver and other fire detectors installed in the same house. Send and so on. Among such residential fire alarms, wireless fire alarms, in particular, are expected to be particularly popular because they have the advantage of not having to install electric wires.

  Like this wireless fire alarm, a battery-type fire detector with a built-in battery is generally configured with a battery housing part on the back side of the housing, and the battery is housed in this battery housing part. In this state, the battery housing portion was closed with a battery lid (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 2001-325684 JP 2006-267128 A JP 2007-286895 A

  Here, conventionally, the heat detection type fire sensor and the smoke detection type fire sensor have different detection structures, so that the sensor main body and the sensor cover have different structures. However, in order to improve design efficiency and manufacturing efficiency, there is a need to make these heat-sensitive fire detectors and smoke-sensitive fire detectors have a common structure as much as possible. In particular, in a battery-type fire detector, since the volume occupied by the battery housing portion is relatively large with respect to the entire volume, the structure of the battery housing portion is between the battery-type heat detector and the smoke detector. There was a need to make it common.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a battery mounting structure in a fire detector that can easily share the structure of a battery housing portion.

  In order to solve the above-described problems and achieve the object, the battery mounting structure in the fire detector according to claim 1 is a battery mounting structure in a battery-type fire sensor that detects a fire in the monitoring area. The fire sensor includes a sensor body that performs fire detection, a power supply unit that includes the battery that serves as a power source for the sensor body, the sensor body is housed in the monitoring area, and the power supply unit is A sensor cover that is housed on the opposite side of the monitoring area, and the power supply unit is a body side cover disposed on the sensor body side and an outer cover disposed on the side opposite to the sensor body. And the battery disposed between the main body side cover and the outer cover.

  Further, the battery mounting structure in the fire detector according to claim 2 is the battery mounting structure in the fire sensor according to claim 1, wherein the body side cover is attached to the sensor cover with a dedicated jig. The outer cover was fixed by screwing or engaging with the main body side cover.

  Further, the battery mounting structure in the fire detector according to claim 3 is the battery mounting structure in the fire sensor according to claim 1 or 2, wherein the power supply unit is opposite to the monitoring area, A mounting bracket is provided to attach the fire detector to the installation surface.

  Moreover, the battery attachment structure in the fire detector according to claim 4 is the battery attachment structure in the fire detector according to any one of claims 1 to 3, wherein the outer cover is made transparent or translucent. Formed.

  Further, the battery mounting structure in the fire detector according to claim 5 is the battery mounting structure in the fire detector according to any one of claims 1 to 4, wherein the power supply unit is a first predetermined unit. A first power supply unit that accommodates a number of the batteries, and a second power supply unit that accommodates a second predetermined number of batteries larger than the first predetermined number. One of the two power supply units was accommodated in the sensor cover.

  According to the battery mounting structure in the fire detector according to claim 1, the power supply unit includes a main body side cover disposed on the sensor main body side, an outer cover disposed on the opposite side of the sensor main body, Since the battery disposed between the main body side cover and the outer cover is integrally provided, handling of the power supply unit is prepared. In particular, by unitizing each part of the power supply unit, it becomes easy to share the common power supply unit with a plurality of fire detectors having different structures.

  Further, according to the battery mounting structure for the fire detector according to claim 2, the main body side cover is fixed to the sensor cover by a fixing portion that can be fixed and released by a dedicated jig. Without the jig, the main body side cover cannot be removed and the sensor main body can be kept covered by the main body side cover, so that the user can be prevented from touching the sensor main body. . On the other hand, since the outer cover is fixed to the main body side cover by screwing or engaging, the user can easily remove only the outer cover without using a jig, and the battery can be easily replaced. Is possible.

  Further, according to the battery mounting structure of the fire detector according to claim 3, since the mounting bracket for mounting the fire detector on the installation surface is provided on the opposite side of the power supply unit from the monitoring area, The fire detector can be attached to the installation surface via the mounting bracket.

  Further, according to the battery mounting structure of the fire detector according to claim 4, since the outer cover is formed to be transparent or translucent, the presence or absence of the battery can be easily confirmed from the outside even when the outer cover is mounted. can do.

  Further, according to the battery mounting structure in the fire detector according to claim 5, the first power supply unit that accommodates the first predetermined number of batteries and the second predetermined number that is larger than the first predetermined number. A second power supply unit containing a battery is provided, and either one of the first power supply unit or the second power supply unit is housed in the sensor cover, so that the power supply unit corresponding to the required battery amount is selected. The battery amount of the fire detector can be easily adjusted.

It is a side view of the wireless smoke detector which concerns on Embodiment 1 of this invention. It is a bottom view of the smoke sensor of FIG. It is AA arrow sectional drawing of FIG. It is a disassembled perspective view of the principal part of a smoke sensor. It is a side view of a smoke detector adapter. It is a top view of a smoke detector adapter. It is a disassembled perspective view of a power supply unit. It is a disassembled perspective view of a power supply unit. It is a side view of the wireless thermal sensor which concerns on Embodiment 2 of this invention. FIG. 10 is a bottom view of the heat sensor of FIG. 9. It is BB arrow sectional drawing of FIG. It is a perspective view of a terminal board and an antenna support plate. It is a disassembled perspective view of a terminal board and an antenna support plate. It is sectional drawing of a terminal board and an antenna support plate.

  Hereinafter, embodiments of a battery mounting structure in a fire detector according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited by these embodiments.

[Embodiment 1]
First, the first embodiment will be described. This form relates to a battery mounting structure in a wireless and battery-type smoke detector configured as a residential fire alarm.

  1 is a side view of a wireless smoke detector according to the present embodiment, FIG. 2 is a bottom view of the smoke detector of FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA in FIG. 4 is an exploded perspective view of the main part of the smoke detector. In the following description, the smoke detector is installed on the ceiling surface (not shown) as a reference. The upper side in FIG. 1 is the upper side, the lower side in FIG. 1 is the lower side, and the surface shown in FIG. The bottom surface, the surface opposite to the surface shown in FIG.

  As shown in each of these drawings, the smoke detector 1 is for detecting a fire in the monitoring area, and includes a detector body 10 for detecting smoke and a battery serving as a power source for the detector body 10. 21, a sensor cover 30 for housing the sensor body 10 and the power supply unit 20, and a mounting bracket 40.

  The sensor body 10 includes a smoke detector 50 and a terminal board 60, and includes a smoke detector adapter 70 disposed between the smoke detector 50 and the terminal board 60. .

  The smoke detector 50 is a portion that performs scattered light type smoke detection, and includes a smoke detector body 51, a smoke detector cover 52, and an insect net 53. The smoke detector main body 51 is formed in a disk shape as a whole, and is emitted from a light emitting unit 54 (specifically, a light emitting diode) as a light emitting unit that emits light as detection light, and the light emitting unit 54. A light receiving unit 55 (specifically, a photodiode) is provided as light receiving means for receiving scattered light generated by being scattered by smoke. The light emitting unit 54 and the light receiving unit 55 are arranged so that their optical axes are not located on the same straight line, and are arranged at positions where the light emitted from the light emitting unit 54 is not directly received by the light receiving unit 55. . The smoke detector cover 52 covers the smoke detector 50 and is formed in a disk shape having a smaller diameter than the smoke detector body 51, and a labyrinth 56 is integrally formed on the surface of the smoke detector body 51 side. Is formed. The labyrinth 56 forms a smoke detection space (chamber) inside the labyrinth 56 and blocks disturbance light incident on the chamber to prevent it from entering the light receiving unit 55. The insect repellent net 53 is formed in an annular shape surrounding the outer periphery of the labyrinth 56 and has a large number of small holes (not shown), allowing outside air to enter the chamber through the small holes, while insects enter the chamber. To prevent that. However, since the smoke detector 50 has the same structure as the smoke detector of the wired smoke detector in Patent Document 2, detailed description thereof is omitted.

  The terminal board 60 is a mounting board for mounting (electrically connecting) various electronic components for realizing the smoke detection function. Here, compared to the wired smoke detector, the wireless smoke detector 1 requires a larger mounting area as much as it is necessary to mount transmission / reception components, etc. The diameter is larger than that of the terminal board of Patent Document 2. The specific contents of the electronic components to be mounted and the mounting structure thereof are the same as those in a known wireless smoke detector, and thus the description thereof is omitted. Here, the light emitting unit 54, the light receiving unit 55, the wireless An antenna 57 for transmitting and receiving a signal and a display unit 58 (specifically, a light emitting diode) for notifying the outside of various states of the smoke detector 1 will be described as mounting components. The light emitting unit 54 and the light receiving unit 55 are arranged on the smoke detecting unit main body 51 as described above, and are mounted on the terminal board 60 via electric wires (not shown). The antenna 57 is formed as a linear body that curves substantially along the outer shape of the terminal board 60, and is supported by the smoke detector adapter 70 as will be described later, and its end portion penetrates the smoke detector adapter 70. Then, it reaches the terminal board 60 and is mounted. Two display units 58 are provided, and these two display units 58 are arranged at positions facing each other in the smoke detector adapter 70 as described later, and are supported by the smoke detector adapter 70. The terminal penetrates through the smoke detector adapter 70 to the terminal board 60 and is mounted.

  The smoke detector adapter 70 is a connection means for making it possible to fix the smoke detector shared with the wired smoke detector to the terminal board 60 having a structure different from that of the wired smoke detector. . 5 is a side view of the smoke detector adapter 70, and FIG. 6 is a plan view of the smoke detector adapter 70 (showing a surface opposite to the surface shown in FIG. 4). As shown in FIG. 4 to FIG. 6, the smoke detector 50, the smoke detector adapter 70, and the terminal board 60 are schematically shown on the surfaces of the smoke detector body 51, the smoke detector adapter 70, and the terminal board 60. The sensor main body 10 is configured by sequentially superposing in a state where the directions are parallel to each other.

  The smoke detector adapter 70 is generally formed in a disk shape having substantially the same diameter as the terminal board 60 or a larger diameter than the terminal board 60. Here, since the light may be guided by the internal transmission of the terminal board 60 and received by the light receiving unit 55, the smoke detecting unit is formed by forming the smoke detecting unit adapter 70 with the above diameter. The terminal board 60 can be covered with respect to the smoke detector main body 51 by the adapter 70, and the light guided by the terminal board 60 can be prevented from entering the light receiving part 55.

  Next, the power supply unit 20 will be described. 7 shows an exploded perspective view of the power supply unit 20 (note that the illustration of the screw groove and the battery contact is omitted, and a part of the main body side cover is cut away. The same applies to FIG. 8). The power supply unit 20 is for detachably attaching the battery 21 to the sensor cover 30, and is disposed on the main body side cover 22 disposed on the sensor body 10 side and on the opposite side of the sensor body 10. And a battery 21 disposed between the main body side cover 22 and the outer cover 23.

  Here, as the power supply unit 20, the power supply unit 20 </ b> A (first power supply unit) in FIG. 7 that accommodates a first predetermined number (two in this case) of batteries 21, and the second predetermined number more than the first predetermined number. There are provided two types of power supply units 20A and 20B with the power supply unit B (second power supply unit) in FIG. 8 that accommodates a predetermined number (three in this case) of batteries 21, and the power supply units 20A and 20B Either one selected from the inside is accommodated in a power source accommodating space (described later) of the sensor cover 30. Both of these two types of power supply units 20A and 20B have the same outer shape and have an internal space that can accommodate the second predetermined number. Can be selectively connected. Here, each part of the power supply units 20A and 20B will be described with a common reference numeral, and when there is no need to distinguish between them, they are simply referred to as the power supply unit 20.

  As shown in FIGS. 3, 7, and 8, the main body side cover 22 is disposed on the side opposite to the monitoring area of the terminal board 60 and covers the terminal board 60 so that the terminal board 60 is exposed to the outside. In contrast, it is not exposed. The main body side cover 22 includes a main surface portion 22a, side protrusions 22b, connection protrusions 22c, and a plurality of battery fixing protrusions 22d.

  The main surface portion 22 a is formed in a disk shape having the same diameter or a larger diameter than the diameter of the terminal board 60, and covers the terminal board 60 by being arranged in parallel with the terminal board 60. A pair of fixing portions (not shown) are provided in positions near the outer peripheral end of the main surface portion 22a so as to face each other. By fixing the fixing portions to the sensor cover 30, the main body side cover 22 is provided. Can be fixed to the sensor cover 30. The fixing portion can be released with a dedicated jig for releasing the fixing portion. For example, as disclosed in Japanese Patent Application Laid-Open No. 08-212473, the fixing portion is attached to the sensor cover 30. It is formed as a fixing pin that can be fixed and released by being pressed by a release pick inserted through the provided through hole 31. In particular, since the fixing portion is disposed on the side of the outer cover 23, even when the outer cover 23 is fixed to the main body side cover 22, the fixing portion is also visually observed and aligned. The power supply unit 20 can be accommodated in the sensor cover 30 while being equal.

  3, 7, and 8, the side protrusion 22 b is integrally provided at the end of the main surface portion 22 a, and has an annular shape protruding from the main surface portion 22 a toward the opposite side of the monitoring region. It is formed as a wall body and is disposed along the inner surface of a cover main body portion to be described later of the sensor cover 30.

  The connection protrusion 22c is formed as an annular wall projecting from the main surface portion 22a toward the opposite side of the monitoring region, and a screw groove (not shown) is formed on the outer surface of the connection protrusion 22c. 23 and screwed together.

  The plurality of battery fixing protrusions 22d are plate-like walls that protrude from the main surface portion 22a toward the opposite side of the monitoring region, and are along the longitudinal direction of the battery 21 at a position closer to the center than the connection protrusion 22c. It is arranged on the side. And by arrange | positioning the battery 21 between these battery fixing protrusions 22d, it is prevented that the battery 21 moves carelessly in the transversal direction. Here, the battery fixing protrusions 22d of the power supply unit 20A in FIG. 7 are arranged on the respective side surfaces of the first predetermined number (two in this case) of the batteries 21, and the battery fixing protrusions of the power supply unit 20B in FIG. 22d is arrange | positioned at each side surface of the battery 21 of the 2nd predetermined number (here 3 pieces). In addition, although the specific kind is arbitrary regarding the battery 21, primary batteries, such as a manganese dry battery and an alkaline battery, are used, for example.

  The outer cover 23 is disposed at a position facing the main body side cover 22 with the battery 21 interposed therebetween, and covers the battery 21. The outer cover 23 is configured by integrally including a main surface portion 23a and a connection projection 23b.

  The main surface portion 23a has the same or larger diameter than the outer shape of the battery 21, and is formed in a disk shape having the same diameter or a smaller diameter with respect to the main surface portion 22a of the main body side cover 22. The battery 21 is covered by being arranged in parallel with 22a.

  The connection protrusion 23b is formed as an annular wall projecting from the main surface portion 23a toward the monitoring region, and a screw groove (not shown) is formed on the inner surface thereof. The outer cover 23 can be fixed to the main body side cover 22 by being screwed into the screw groove portion of the connection projection 22c. In addition, in a state where the connection protrusion 22c and the connection protrusion 23b are screwed together, the main surface portion 23a abuts on the side surface of the battery 21, thereby preventing the battery 21 from being inadvertently moved more effectively.

  Here, the outer cover 23 is formed to be transparent. That is, the outer cover 23 is configured by injection-molding a transparent or translucent resin such as polycarbonate or ABS, and the presence or absence of the battery 21 can be confirmed from the outside even when the outer cover 23 is attached. It is possible. However, the outer cover 23 does not necessarily need to be formed transparently over the entire surface, and it is only necessary to form at least a part of the region that allows the presence or absence of the battery 21 from the outside, and is not transparent. Alternatively, it may be translucent.

  Next, the sensor cover 30 shown in FIGS. 1 to 3 will be described. The sensor cover 30 is formed by integrally forming an outside air inflow portion 32 and a cover main body portion 33 by resin molding. The sensor main body accommodating space disposed on the monitoring area side and the monitoring area are defined as follows. It is a space arranged on the opposite side, and has a power supply unit accommodation space that detachably accommodates the power supply unit 20.

  The outside air inflow part 32 accommodates the smoke detecting part 50. The outside air inflow portion 32 has a plurality of outside air flow inlets 34 formed between a plurality of ribs, and the outside air can be introduced into the smoke detector 50 through the outside air flow inlets 34. The outside air inflow portion 32 includes the through hole 35 for exposing the display portion 58 to the outside and the above-described through hole 31 for inserting a dedicated jig for unfixing the fixing portion of the main body side cover 22. Prepare.

  The cover main body 33 houses the terminal board 60, the smoke detector adapter 70, and the power supply unit 20. The cover body 33 has a diameter larger than that of the terminal board 60, the smoke detector adapter 70, and the power supply unit 20, and is a height obtained by superimposing the terminal board 60, the smoke detector adapter 70, and the power supply unit 20. It is formed in an annular shape having a height substantially equal to. The cover main body 33 is disposed along a direction orthogonal to the terminal board 60 and the smoke detector adapter 70.

  Next, the mounting bracket 40 shown in FIGS. 6 to 8 will be described. The mounting bracket 40 is for attaching the smoke detector 1 to an installation surface (here, a ceiling surface not shown), and is disposed on the opposite side of the monitoring area in the power supply unit 20. The surface portion 40a and the side protrusion 40b are integrally provided.

  The main surface portion 40a is formed in a disk shape having the same diameter as the main surface portion 22a of the main body side cover 22, and is arranged in parallel with the main surface portion 22a. A plurality of through holes 40c are formed in the main surface portion 40a, and the mounting bracket 40 is fixed to the installation surface by locking the heads of the mounting screws screwed into the installation surface with the through holes 40c. Can do.

  The side projection 40b is formed as an annular wall projecting from the main surface 40a toward the monitoring area, and a screw groove (not shown) is formed on the outer surface thereof. The mounting bracket 40 can be fixed to the main body side cover 22 by being screwed with the side protrusions 22b of the body 22.

  Next, a method for manufacturing the smoke detector 1 will be described. First, the smoke detector main body 51 is mounted on the terminal board 60 via the smoke detector adapter 70. Specifically, in this mounting, the smoke detector main body 51, the smoke detector adapter 70, and the terminal board 60 are overlapped with each other. Then, at the time of polymerization, an electric wire (not shown) for connecting the terminals of the light emitting unit 54 and the light receiving unit 55 to the terminal board 60 is drawn out to the terminal board 60, and this electric wire is connected to the terminal board 60 with solder. Further, the terminals of the display unit 58 are passed through the through holes of the terminal board 60 and connected to the terminal board 60 with solder. Further, the antenna 57 is placed on the outer edge of the smoke detector adapter 70, and the end of the antenna 57 is passed through the through hole of the terminal board 60 and connected to the terminal board 60 with solder. Thereafter, the sensor body 10 assembled in this way is accommodated in the sensor cover 30.

  Next, the power supply unit 20 is prepared. Therefore, by placing the battery 21 on the main body side cover 22 and fixing the outer cover 23 to the main body side cover 22, the main body side cover 22, the battery 21, and the outer cover 23 are integrated into a unit. To do. By unitizing the power supply unit 20 in this way, the power supply unit 20 can be easily handled. Here, one of the two types of power supply units 20A and 20B is selected according to the required battery amount. Then, the selected power supply unit 20 is inserted into the sensor cover 30 and fixed to the sensor cover 30 via the fixing portion of the main body side cover 22. Finally, by attaching the mounting bracket 40 to the main body side cover 22, the manufacture of the smoke detector 1 is completed.

  When the smoke detector 1 is used, the mounting bracket 40 is removed from the main body side cover 22, and only the mounting bracket 40 is locked to the head of the mounting screw screwed into the installation surface. Next, the smoke detector 1 is attached to the installation surface by attaching the main body side cover 22 to the attachment bracket 40.

  Here, when the remaining battery level is reduced and the battery 21 is replaced, the smoke detector 1 is removed from the installation surface by removing the main body side cover 22 from the mounting bracket 40. In this state, since the outer cover 23 is fixed to the main body side cover 22 by screwing, the user can easily remove only the outer cover 23 without using a jig. It is possible to exchange it easily. On the other hand, the main body side cover 22 is fixed to the sensor cover 30 by a fixing portion that can be fixed and released by a dedicated jig. Therefore, the main body side cover 22 cannot be removed without the dedicated jig. Since the sensor body 10 can be kept covered by the body-side cover 22, the user can be prevented from touching the sensor body 10. In particular, since a circuit component for wireless communication is mounted on the terminal board 60, and this circuit component is prohibited from being placed at a position where the user touches by the Fire Service Act, the user touches this circuit component. By preventing this, it becomes possible to comply with laws and regulations.

(effect)
As described above, according to the first embodiment, the power supply unit 20 includes the main body side cover 22 arranged on the sensor main body 10 side, the outer cover 23 arranged on the opposite side of the sensor main body 10, and these main bodies. Since the battery 21 disposed between the side cover 22 and the outer cover 23 is integrally provided, handling of the power supply unit 20 is prepared. In particular, by unitizing each part of the power supply unit 20, it becomes easy to share the common power supply unit 20 with a plurality of smoke detectors 1 having different structures.

  Further, by fixing the main body side cover 22 with a fixing part that can be fixed and released to the sensor cover 30 with a dedicated jig, the main body side cover 22 cannot be removed without the dedicated jig. Since the sensor body 10 can be kept covered by the body-side cover 22, it is possible to prevent the user from touching the sensor body 10. On the other hand, since the outer cover 23 is fixed to the main body side cover 22 by screwing or engagement, the user can easily remove only the outer cover 23 without using a jig, and the battery 21 is prepared. It is possible to exchange it.

  In addition, since the mounting bracket 40 for mounting the smoke detector 1 on the installation surface is provided on the opposite side of the power supply unit 20 from the monitoring area, the smoke detector 1 is mounted on the installation surface via the mounting bracket 40. Is possible.

  Further, since the outer cover 23 is formed to be transparent or translucent, the presence or absence of the battery 21 can be easily confirmed from the outside even when the outer cover 23 is attached.

  In addition, a first power supply unit 20A that accommodates a first predetermined number of batteries 21 and a second power supply unit 20B that accommodates a second predetermined number of batteries 21 that are larger than the first predetermined number are provided. Since one of the first power supply unit 20A and the second power supply unit 20B is accommodated in the sensor cover 30, the power supply unit 20 can be selected and used according to the required amount of the battery 21, and smoke detection The battery amount of the container 1 can be easily adjusted.

[Embodiment 2]
Next, a second embodiment will be described. This form relates to a battery mounting structure in a wireless heat sensor configured as a residential fire alarm. However, the configuration in the second embodiment is the same as the configuration in the first embodiment except for a portion to be specially described, and description thereof is omitted by adding the reference numerals used in the first embodiment as necessary. To do.

  9 is a side view of the wireless heat sensor according to the present embodiment, FIG. 10 is a bottom view of the heat sensor of FIG. 9, and FIG. 11 is a cross-sectional view taken along the line BB of FIG. . In the following description, the heat detector 100 will be described based on a state where it is installed on a ceiling surface (not shown). The upper side in FIG. 9 is the upper side, the lower side in FIG. 9 is the lower side, and the surface shown in FIG. A surface opposite to the surface shown in FIG. 10 is referred to as a plane.

  As shown in these drawings, the heat sensor 100 includes a sensor main body 110 for performing heat detection, a power supply unit 20 having a battery 21 as a power source of the sensor main body 110, the sensor main body 110, and A sensor cover 120 for housing the power supply unit 20 and a mounting bracket 40 are provided.

  The sensor main body 110 includes a terminal board 130 and an antenna support plate 140. 12 is a perspective view of the terminal board 130 and the antenna support plate 140, FIG. 13 is an exploded perspective view of the terminal board 130 and the antenna support plate 140, and FIG. 14 is a cross-sectional view of the terminal board 130 and the antenna support plate 140. .

  The terminal board 130 is a mounting board for mounting (electrically connecting) various electronic components for realizing a heat sensing function. Here, the specific contents of the electronic component to be mounted and the mounting structure thereof are the same as those in a known wireless heat sensor, and thus the description thereof will be omitted. Here, the thermistor 131 and the wireless signal are omitted. The display 57 (specifically, a light emitting diode) for notifying the outside of the antenna 57 for performing transmission / reception and various states of the heat sensor 100 will be described as mounting components. The thermistor 131 is attached so as to be orthogonal to the terminal board 130 at the center position of the terminal board 130. The antenna 57 is formed as a linear body that curves substantially along the outer shape of the terminal board 130, and is supported by the outer edge of the antenna support plate 140 as will be described later. It penetrates and reaches the terminal board 130 and is mounted. Two display portions 58 are provided, and these two display portions 58 are arranged at positions facing each other on the outer edge portion of the antenna support plate 140 as described later, and are supported by the outer edge portions. The terminal penetrates the antenna support plate 140 to reach the terminal board 130 and is mounted.

  The antenna support plate 140 is superposed in parallel with the terminal board 130, and is formed in a disk shape having substantially the same diameter as the terminal board 130 as a whole. A through hole through which the thermistor 131 is inserted is formed at the center position of the antenna support plate 140. By sealing the resin 142 to the base of the thermistor 131 inserted through the through hole, the thermistor 131 is fixed more firmly.

  Next, the power supply unit 20 will be described. The power supply unit 20 is configured in the same manner as in the first embodiment. That is, as shown in FIGS. 7 and 8, the power supply unit 20 includes a main body side cover 22 disposed on the sensor body 10 side, an outer cover 23 disposed on the opposite side of the sensor body 10, and these main bodies. A battery 21 disposed between the side cover 22 and the outer cover 23 is provided. The storage space of the power supply unit 20 in the sensor cover 120 is shared between the smoke sensor 1 and the heat sensor 100, and is common to the smoke sensor 1 and the heat sensor 100. The power supply unit 20 can be used.

  Next, the sensor cover 120 will be described with reference to FIGS. The sensor cover 120 is configured by integrally forming an outside air inflow portion 121 and a cover main body portion 122 by resin molding. The outside air inflow part 121 accommodates the thermistor 131 and has an outside air inlet 123 formed between a plurality of ribs. The outside air can be introduced into the thermistor 131 through the outside air inlet 123. it can. The cover main body 122 accommodates the terminal board 130, the antenna support plate 140, and the power supply unit 20. The cover body 122 has a diameter larger than that of the terminal board 130, the antenna support plate 140, and the power supply unit 20, and is approximately equal to the height at which the terminal board 130, the antenna support plate 140, and the power supply unit 20 are superposed. It is formed in an annular shape of equal height. The cover main body 122 is disposed along a direction orthogonal to the terminal board 130 and the antenna support plate 140.

  Next, the mounting bracket 40 will be described. The mounting bracket 40 is configured in the same manner as in the first embodiment. That is, as shown in FIGS. 7 and 8, the main surface portion 40a and the side protrusion 40b are integrally provided. The storage space of the mounting bracket 40 in the sensor cover 120 is shared between the smoke sensor 1 and the heat sensor 100, and is common to the smoke sensor 1 and the heat sensor 100. The mounting bracket 40 can be used.

(effect)
As described above, according to the second embodiment, the heat sensor 100 can obtain the same effects as those of the first embodiment.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved.

(About sensor)
In each of the above-described embodiments, an example in which the smoke detector 1 that is a fire alarm for a house and the power supply unit 20 in the heat sensor 100 are shared is described. You may apply to a heat sensor. Further, the present invention can be applied to a fire detector having a fire detection structure different from those described in the above embodiments, and may be applied to, for example, a heat detector using a ceramic element as a heat detection element. .

(About the number of batteries)
The number of the batteries 21 has been described assuming that the first predetermined number is two and the second predetermined number is three. However, as long as the second predetermined number is set larger than the first predetermined number, this number is changed. For example, the first predetermined number may be one and the second predetermined number may be two. Further, the power supply unit 20 may be configured to accommodate three or more types, and in this case, the range of adjustment of the battery amount of the fire detector can be further expanded.

DESCRIPTION OF SYMBOLS 1 Smoke detector 10, 110 Sensor main body 20, 20A, 20B Power supply unit 21 Battery 22 Main body side cover 22a, 23a, 40a Main surface part 22b, 40b Side protrusion 22c, 23b Connection protrusion 22d Battery fixing protrusion 23 Outer cover 30, 120 Sensor cover 31, 35 Through hole 32, 121 Outside air inflow part 33, 122 Cover body part 34, 123 Outside air flow inlet 40 Mounting bracket 50 Smoke detection part 51 Smoke detection part body 52 Smoke detection part cover 53 Insect net 54 Light emitting part 55 Photodetector 56 Labyrinth 57 Antenna 58 Display 60, 130 Terminal Board 70 Smoke Detector Adapter 100 Heat Sensor 131 Thermistor 140 Antenna Support Plate

Claims (5)

A battery mounting structure for a battery type fire detector that detects a fire in a monitoring area,
The fire sensor includes a sensor body that performs fire detection, a power supply unit that includes the battery serving as a power source for the sensor body, and the detector body is housed in the monitoring area and the power supply unit is monitored. A sensor cover that is housed on the opposite side of the area,
The power supply unit includes a main body side cover disposed on the sensor main body side, an outer cover disposed on the opposite side of the sensor main body, and the main body side cover and the outer cover disposed between the main body side cover and the outer cover. Integrated with battery,
Battery mounting structure for fire detectors. The main body side cover is fixed to the sensor cover with a fixing part that can be fixed and released with a dedicated jig,
The outer cover was fixed to the main body side cover by screwing or engagement.
The battery mounting structure in the fire detector according to claim 1. On the opposite side of the power supply unit from the monitoring area, a mounting bracket for mounting the fire detector on an installation surface is provided.
The battery mounting structure in the fire detector according to claim 1 or 2. The outer cover was formed transparent or translucent,
The battery mounting structure in the fire detector according to any one of claims 1 to 3. As the power supply unit, a first power supply unit that houses a first predetermined number of the batteries and a second power supply unit that houses a second predetermined number of batteries larger than the first predetermined number are provided. , One of the first power supply unit and the second power supply unit is accommodated in the sensor cover,
The battery mounting structure in the fire detector according to any one of claims 1 to 4.

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