JP4196315B2 - Wireless transmitter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wireless transmitter that wirelessly transmits an abnormal signal detected when an abnormality occurs, and more particularly to a storage structure for a battery for a power source in the wireless transmitter.
[0002]
[Prior art]
For example, conventional anomaly detectors, such as fire detectors, that are installed in each dwelling unit of a housing complex and the ceiling of a detached dwelling unit, such as fire detectors, are installed in each dwelling unit by a line, etc. Connected to the receiver. When an abnormality occurs, the abnormality detector provided in the dwelling unit detects the abnormality, and the detected abnormality signal is sent to the receiver via the line to display the occurrence of the abnormality, and the abnormality signal is From the home controller to the security company that manages the home controller, or if the housing information board is connected to the housing ridge receiver, it is sent from the housing information panel to the housing ridge receiver. Wired cables are mostly used as signal transmission means for conventional abnormality detectors, and there are few wireless abnormality detectors.
[0003]
[Problems to be solved by the invention]
If the above-mentioned conventional abnormality detector has a built-in battery for power supply so that an abnormality signal can be transmitted wirelessly, indoor ceiling wiring such as wiring for introducing commercial power and lines between the above abnormality detectors There is a feature that can be omitted. However, if the power supply voltage of the built-in battery drops in the abnormal transmitter configured in the wireless system, the original abnormality detection operation or signal transmission becomes impossible, so the battery needs to be replaced. In this case, there is a problem that the replacement operation of the transmitter battery installed on the ceiling is troublesome, and there is a problem that a malfunction occurs due to contact with the internal components of the transmitter at the time of disassembly accompanying the removal of the built-in battery.
[0004]
The present invention has been made to solve such problems. The structure for fixing the built-in battery is simply configured, the battery is easily taken out, and water leakage from the ceiling is considered. An object of the present invention is to realize a wireless transmitter of the new wireless transmission method.
[0005]
[Means for Solving the Problems]
The present invention includes a base installed on a ceiling surface, a covered cylindrical main body detachably attached to the base, a battery for supplying power to an electronic member housed in the main body, and a detachable attachment on the bottom surface side of the main body A wireless transmitter including an abnormality detection unit that is housed in a cover that can be attached and detects the occurrence of an abnormality, and a wireless transmission unit that transmits an abnormal signal detected by the abnormality detection unit to the outside via an antenna. And an annular wall protruding from the upper surface of the lid plate of the main body, an arc wall circumscribing the annular wall on the base, and a peripheral wall disposed outside the annular wall, and the lid plate is recessed inside the annular wall A wireless transmitter in which a battery is stored in a storage chamber formed in this manner is configured.
In the above, and fixed to sandwiched the battery by hook provided opposite to the side wall of the housing chamber, and an upper portion of the storage chamber that covered by the base via the external shape of the battery radio This constitutes a transmitter.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing the structure of the first embodiment of the present invention, FIG. 2 is an explanatory view showing the appearance of the first embodiment, (a) is a front view, (b) is a top view, and (c) is a top view. FIG. 3 is a bottom view, FIG. 3 is an explanatory view showing the shape of the housing of the main body, (a) is a top view, (b) is a bottom view, FIG. 4 is an explanatory view showing the structure inside the main body, and (a) is a top view. FIG. 4B is a bottom view. 1 to 4, reference numeral 1 denotes a wireless transmitter that is attached to a ceiling W or the like and detects a fire. Reference numeral 2 is a main body, 3 is a cover, and 4 is a base, and these constitute a radio transmitter 1 (hereinafter referred to as transmitter 1). 5 and 6 are a battery and a printed circuit board (PC board) arranged at the upper and lower parts in the main body 2, and 7 is composed of a transmission circuit, a control circuit, etc. that are mounted on the upper surface of the PC board 6 and lead out the antenna 7a. The transmission module 8 is an optical system that is a part of the abnormality detection means (fire detection means).
[0007]
The casing of the transmitter 1 is made of flame retardant resin such as ABS, and the casings 2a and 4a of the main body 2 and the base 4 are both substantially cylindrical with a lid open, and the casing of the cover 3 3a is molded into a dish shape. The cover 3 and the base 4 are detachably assembled to the lower part and the upper part of the main body 2 with the main body 2 interposed therebetween. 11 is a cover plate (hereinafter mainly shown in FIGS. 1 and 3) that divides the housing 2a into two upper and lower portions, 12 is a peripheral wall that extends to the lower bottom side through a step at the periphery of the cover plate 11, Reference numeral 13 denotes an annular inner wall provided so as to protrude on the cover plate 11, reference numeral 14 denotes a wide and narrow two-stage arc fitting groove formed at two locations on the cover plate 11 outside the inner wall 13, 15 and 16 Are first and second depressions formed continuously on the cover plate 11.
[0008]
The first depression 15 divides a part of the inner wall 13 and is provided with two large and small through holes 15a and 15b penetrating the bottom surface. The second depression 16 is formed in a rectangular shape surrounded by the inner wall 13 and constitutes a storage chamber R1 for storing two power supply batteries 5 that are connected in parallel and integrated. Reference numeral 17 denotes a pair of upper hooks opposed to the long sides on both sides of the second depression 16, and stores the battery 5 by fitting it in the storage chamber R <b> 1. 3 and 21 shown in FIG. 3B are provided with radial elasticity by two guide grooves formed at equiangular intervals of 180 ° and 120 ° in the axial direction of the peripheral wall 12 and slits on both sides, respectively. Of these three movable pieces, although not shown in detail, a rectangular locking hole 23 (shown only with a two-dot chain line) is provided near the movable end of the movable piece 22.
[0009]
Reference numeral 25 denotes an attachment mechanism (generic name) for the PC plate 6, which has a combined structure composed of the following three members provided on the bottom surface side of the housing 2a. 26 is two lower hooks extending from the bulging portion 16a to the bottom surface side along the side wall of one long side of the bottom surface side (the bulging portion 16a is the bottom surface side) of the second depressed portion 16, and 27 is a peripheral wall side. Two hooking tools 28 respectively opposed to the lower hooks 26 are two thin positioning rods. Both the lower hook 26 and the hooking tool 27 of the combined structure are provided with two receiving bases 26a and 27a projecting on the bottom surface side of the cover plate 11, and the lower hook 26 and the hooking tool are provided for these receiving bases 26a and 27a. 27 are opposed to each other with a gap corresponding to the thickness of the PC board 6. Then, when the PC board 6 is assembled in the procedure described later, the PC board 6 is detachably mounted in a horizontal state by being positioned on the bottom surface side in the housing 2a by the mounting mechanism 25 composed of three members.
[0010]
Reference numeral 30 denotes a holding mechanism for the antenna 7a (30 is a generic name shown in FIG. 5), and a plurality of, for example, two, U-grooves 30a each having an opening that is somewhat larger than the wire diameter of the antenna are opened upward and downward alternately. It is composed of a pair of holding ribs 31 and 32. These holding ribs 31 and 32 are provided in the vertical direction (axial direction) at intervals on the inner peripheral surface of the tip of the peripheral wall 12 alternately. The mounting state of the transmission module 7 from which the antenna 7a is derived to the PC board 6 is shown in a plan view in FIG. 4B, and side views of the pair of holding ribs 31 and 32 are shown on the left and right in FIG. Yes. As shown in FIG. 5, the antenna 7a is held by the holding ribs 31 and 32 so as to be lower than the PC board 6 when the transmitter 1 is installed on the ceiling W surface. The antenna 7a derived from the transmission module 7 uses a metal wire having elasticity such as a nickel-titanium alloy that quickly recovers to a linear memory shape when the external force is released. Since the antenna 7a is held by the U-shaped groove 30a having a wider cut end, it is possible to cope with a change in the wire diameter.
[0011]
FIG. 6 shows the stored extension state of the antenna 7a attached to the PC board 6. Here, assuming that the wavelength of the transmission signal is λ and the antenna length is L, L = λ / 4 is set. Reference numeral 33 in FIG. 6 denotes a positioning hole, which is formed in two places on the PC board 6 corresponding to the positioning rod 28 described above. In addition, an electronic member displayed in a deformed hexagonal shape along with the transmission module 7 on the PC board 6 indicates a mounted state of a fire detection circuit 91 described later that is covered with a shield case and includes an amplifier. Reference numerals 34 and 35 denote an arcuate side and a straight side of the PC plate 6, and the arc of the arcuate side 34 is formed so as to form an inscribed circle of the peripheral wall 12 of the main body 2.
[0012]
7A and 7B are explanatory views showing the shape of the base 4 (common to the housing 2a). FIG. 7A is a top view, FIG. 7B is a side view, and FIG. 7C is a bottom view. 7 (a) to 7 (c), 36 is an insertion hole through which a screw 37 (FIG. 1) for fixing to the ceiling W is inserted, 38 is two discard holes for arc-shaped molding, and 39 is a discard Two key-shaped pieces provided in the hole 38 and projecting to the bottom surface side, 41 is a peripheral wall of the base 4, and 42 is a circular arc wall concentric with the peripheral wall 41 on the bottom surface side. The key-shaped piece 39 corresponds to the fitting groove 14 of the main body 2 provided in the main body 2, and the arc wall 42 circumscribes the inner wall 13 of the main body 2. When the fitting groove 14 is fitted to the key-shaped piece 39 and the main body 2 is assembled to the base 4, the arc wall 42 circumscribes the inner wall 13 and within the angle θ related to the groove length of the fitting groove 14 [FIG. (B)] is rotated.
[0013]
1 and 2, R2 is a storage chamber of the optical system 8 formed in the thread trimming portion of the dish-shaped cover 3, 45 is a peripheral wall of the cover 3, and 46 is six radiations formed below the inclined surface. Ribs (fins) 47 are cover plates connected to the radiation ribs 46, and 48 is a smoke inlet. The cover plate 47 covers the lower surface of the storage chamber R2 and protects the optical system 3 stored therein. Although not shown in the drawings, on the inner peripheral surface of the peripheral wall 45, there are protrusions and triangular protrusions (both not shown) corresponding to the two guide grooves 21 and the three locking holes 23 formed in the housing 2a. It is provided in the axial direction. The relative position of the cover 3 to the main body 2 is guided by the combination of the two sets of protrusions and the guide grooves 21, and the function of preventing the cover 3 from coming off is achieved by the fitting of the three sets of protrusions and the locking holes 23. It is supposed to be.
[0014]
Reference numeral 51 denotes an insect screen of the optical system 8, and 52 denotes a labyrinth surrounded by the insect screen 51. Inside the labyrinth 52, a not-shown light emitting / receiving element is provided to constitute a smoke detecting unit for detecting scattered light generated by fire smoke. Reference numerals 53 and 54 denote two indicator lamps for fire and wireless transmission, which are led out from the PC plate 6 and suspended from the side surface of the optical system 8. As will be described later, the indicator lamp 53 is lit red during a fire and wireless transmission, and the indicator lamp 54 is lit yellow in a failure state such as a voltage drop of the power supply battery 5 to visually check each state. Let 1 and FIG. 4B show the axis OO and the axis O of the transmitter 1, and θ indicates a rotation angle when the main body 2 and the base 4 are attached to and detached from each other. 4 (a), 56 is a connector plug of the battery 5, 57 and 58 are connector sockets mounted on the PC board 6 and a rotary switch for setting a transmission frequency channel.
[0015]
FIG. 8 is a block diagram showing the configuration of the circuit section of the first embodiment. In FIG. 8, 9 is a circuit unit of the transmitter 1 and is composed of electronic components mounted on the PC board 6. 90 is a control circuit for controlling the inside of the circuit unit 9, 91 is a fire detection circuit including an optical system 8 that detects scattered light due to smoke, 92 is a battery exhaustion detection circuit, 93 is a switch circuit for measuring / registration setting, and 94 is This is a channel setting switch circuit. Reference numerals 95 and 96 are lighting circuits for the indicator lamps 53 and 54, 97 is a transmission circuit for wirelessly transmitting a fire signal from the antenna 7a, and 98 is a constant voltage supplied to the control circuit 90 and the like with the power supply of the battery 5 being a constant voltage. Circuit.
[0016]
An outline of the operation of the transmitter 1 having the above-described configuration will be described next with reference to the block diagram of FIG.
A. Operation during normal monitoring Since "fire" and "battery exhaustion" are not detected during normal monitoring , the control circuit 90 wirelessly receives the receiver (by the antenna 7a via the transmission circuit 97 every predetermined time). For example, a normal signal is transmitted to the home controller.
[0017]
B. At the time of fire detection When smoke, heat, flame, gas or gas leakage caused by a fire is detected, the detection signal is input to the control circuit 90 and wirelessly transmitted to the receiver. At that time, the indicator lamp 53 lights red. When the fire is restored, the indicator lamp 53 is turned off at that time, and is restored during normal monitoring.
[0018]
C. At the time of detection of battery exhaustion When the battery voltage at the time of transmission falls below a predetermined value, transmission is performed at predetermined intervals, and the battery exhaustion is detected each time. When battery exhaustion is detected, a battery exhaust signal is wirelessly transmitted to the receiver via the transmission circuit 97. The indicator lamp 54 blinks when it detects that the battery has run out. In addition, when it exceeds a predetermined value by detection of battery exhaustion, it recovers at the time of normal monitoring.
[0019]
Next, an assembling / disassembling procedure of the transmitter 1 and a battery replacement procedure will be exemplified.
A. Assembly procedure The base 4 is previously fixed with a fixing screw 37 (FIG. 1) on the ceiling W surface or the like with the key-shaped piece 39 protruding as shown in FIG. 6, it is assumed that electronic components and electronic circuits such as the transmission module 7 and the optical system 8 are mounted as shown in FIG. 6.
1. The main body 2 is placed on a desk or the like with the bottom side facing upward. The PC plate 6 slightly inclined with the optical system 8 facing upward is placed from above the placed main body 2, and the arc-shaped side 34 is a gap between the hook 27 provided on the peripheral wall 12 of the main body 2 and the receiving base 27a. Plug in. At that time, the positioning hole 33 closer to the antenna 7 a in the PC plate 6 is inserted into the positioning rod 28.
[0020]
2. After the arc-shaped side 34 is inserted into the gap, the opposing linear side 35 side is pushed down and brought into contact with the key-shaped slopes of the two lower hooks 26. The free end of the lower hook 26 tilts outward by contact with the straight side 35 of the PC board 6, the vicinity of the straight side 35 is pressed and dropped under the chin of the key-shaped hook, and is pressed by the cradle 26 a and the lower hook 26. By this operation of the attachment mechanism 25, the PC board 6 is held and incorporated in a predetermined position inside the main body 2 in the horizontal direction.
3. When the PC plate 6 is assembled by the above attachment, the antenna 7a led out from the transmission module 7 is drawn obliquely upward from the vicinity of the positioning rod 28 on the peripheral wall 12 side. The vicinity of the lead-out portion of the drawn antenna 7a is bent, led to the first holding rib 31 of the holding mechanism 30, and engaged with the upward U-shaped groove 30a. The front end side of the antenna 7a away from the first engagement position is pushed down somewhat and elastically hooked into the downward U-shaped groove 30a of the next holding rib 32.
[0021]
4). The engaging operation of (3.) described above is sequentially performed toward the tip of the antenna 7a, and the antenna 7a is alternately held by the holding mechanism 30 including the plurality of holding ribs 31 and 32 in the upper and lower sides. As a result, the antenna 7a led out linearly can be elastically suspended along the circular peripheral wall 12 centering on the axis O.
5. Next, the cover 3 is put on the main body 2. At this time, the guide groove 21 provided in the peripheral wall 12 of the main body 2 and the locking hole 3 in the movable piece 22 perform a guide and lock function when the cover 3 is attached to the main body 2, respectively.
[0022]
6). Thereafter, the main body 2 can be attached to the base 4 by fitting the pair of fitting grooves 14 into the pair of key-shaped pieces 39 and rotating the θ angle.
In this way, the transmitter 1 attached to the ceiling W performs a monitoring operation for the occurrence of a fire within the monitoring range on the floor surface around the vertical axis.
[0023]
B. Disassembly procedure Basically, it is the reverse procedure of the above assembly.
1. The main body 2 integrated with the cover 3 is rotated by an angle θ in the direction opposite to that at the time of attachment, and is removed from the base 4.
2. The cover 3 covered on the main body 2 is removed. In this case, the cover 3 can be easily separated from the main body 2 by inserting a thin plate or the like into the fitting surface between the main body 2 and the cover 3 and tilting the free end of the movable piece 22 of the housing 2a toward the axial center.
3. The antennas 7a are removed one after another from the holding ribs 31 and 32 held alternately at the top and bottom. The antenna 7a is restored to a straight line.
[0024]
4. Lift the two lower hooks 26 and lift the straight side 35 side of the PC board 6 to release it from under the jaws of the hooks. Then, the fitting between the positioning hole 33 and the positioning rod 28 is also released, and the arc side 34 side of the PC plate 6 is pulled out from the hook 27. By this operation, the PC board 6 is removed from the attachment mechanism 25.
5. In addition, if necessary, the main body 2 can be turned over, the connector plug 56 can be pulled out from the socket 57, the pair of upper hooks 17 can be expanded, and the battery 5 can be removed from the storage chamber R1.
[0025]
C. Battery replacement procedure Next, a battery replacement operation associated with the above-mentioned "battery exhaustion" or the like will be described.
A. The main body 2 side of the transmitter 1 attached to the ceiling W is rotated by θ angle, and the main body 2 side is removed from the base 4 installed on the ceiling W surface.
B. The connector plug 56 is pulled out from the connector socket 57 exposed in the through hole 15a in the upper part of the main body 2. By pulling out the connector plug 56, the lead wire of the battery 5 is separated from the PC board 6.
C. The upper hooks 17 facing each other are expanded, and the two batteries 5 bundled from the storage chamber R1 are taken out.
[0026]
D. The new battery 5 is taken out and dropped into the storage chamber R1 while being spread between the inclined surfaces of the pair of upper hooks 17.
E. When the connector plug 56 is inserted into the connector socket 57, the new battery 5 is connected to the PC board 6.
F. The fitting groove 14 of the main body 2 is fitted to the key-shaped piece 39 of the base 4 remaining on the ceiling W and rotated in the opposite direction to the angle θ, so that the transmitter 1 after replacement of the battery 5 is placed on the ceiling W surface. Once installed, normal fire monitoring is resumed.
[0027]
Embodiment 2. FIG.
9A and 9B are explanatory views showing the structure of the second embodiment of the present invention. FIG. 9A is a side view of the transmitter 1 and FIG. 9B is a bottom view. The second embodiment is different from the first embodiment in a fundamental component for detecting a fire. In the first embodiment, the optical system 8 for detecting smoke at the time of fire is used. Instead, in FIG. 9, a thermal sensor 8 a that senses a thermal change at the time of fire is provided like a thermistor. ing. If the heat sensing unit 8a is used, the configuration of the sensing unit can be simplified compared to the optical system 8. Since the assembling / disassembling procedure and transmitting operation of the transmitter 1 are substantially the same as those in the first embodiment, the re-explanation is omitted.
[0028]
In the above-described embodiment of the present invention, the smoke detector and the heat detector, which are fire detectors, are described as examples. However, ions, flames, specific gases, combustion products, and the like generated by the fire are described. The present invention can also be applied to the case of a fire detection means that uses a different principle for detection. Furthermore, the present invention can be applied not only to a fire detector but also to an abnormal transmitter that detects an abnormality and transmits the abnormal signal, such as a crime prevention / theft detection detector. Further, although the battery is stored in the storage chamber by the key-shaped hook, a hook having an arc portion along the outer diameter of the battery may be used, and the means for coupling the casings such as the main body and the cover is not necessarily required. The present invention is not limited to the embodiment.
[0029]
【The invention's effect】
The present invention includes a base installed on a ceiling surface, a covered cylindrical main body detachably attached to the base, a battery for supplying power to an electronic member housed in the main body, and a detachable attachment on the bottom surface side of the main body A wireless transmitter including an abnormality detection unit that is housed in a cover that can be attached and detects the occurrence of an abnormality, and a wireless transmission unit that transmits an abnormal signal detected by the abnormality detection unit to the outside via an antenna. And an annular wall protruding from the upper surface of the lid plate of the main body, an arc wall circumscribing the annular wall on the base, and a peripheral wall disposed outside the annular wall, and the lid plate is recessed inside the annular wall A wireless transmitter in which a battery was stored in a storage chamber formed as described above was configured.
As a result, since the built-in battery is fixed by the pair of hooks, the battery fixing structure is extremely simple. Also, if the main body with the cover is removed from the base, the battery can be taken out immediately, and operations such as battery replacement are extremely easy. In addition, since the battery storage chamber is formed so as to be independently isolated by sinking the lid plate, replacement or the like can be performed without affecting other electronic components.
In addition, the upper part of the storage chamber containing the battery is covered with the base and the side surface is surrounded by an annular inner wall, so it is resistant to external impacts and can reduce the adverse effects of water leakage from the ceiling surface. Become.
[0030]
Therefore, according to the present invention, it is possible to provide a wireless transmitter in which the built-in battery fixing structure is simple, the battery can be easily taken out, and the adverse effect of the battery due to water leakage from the ceiling is reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing the structure of a first embodiment of the present invention.
FIG. 2 is an explanatory diagram showing an appearance of the first embodiment.
FIG. 3 is an explanatory diagram showing a shape of a housing of the main body.
FIG. 4 is an explanatory diagram showing a structure inside the main body.
FIG. 5 is a partial side view of an antenna holding mechanism.
FIG. 6 is a plan view of a printed circuit board on which an antenna is mounted.
FIG. 7 is an explanatory diagram showing the shape of a base casing.
FIG. 8 is a block diagram showing a circuit configuration of the first embodiment.
FIG. 9 is an explanatory diagram showing the structure of a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wireless transmitter 2 Main body 2a Case 3 Cover 3a Case 4 Base 5 Battery 6 Printed circuit board (PC board)
7 Transmitting module 7a Antenna 8 Optical system (fire detection means)
8a Heat detector (fire detection means) 9 Circuit part 11 Cover plate 12 Peripheral wall 13 Inner wall 14 Fitting groove 17 Upper hook 21 Guide groove 25 Mounting mechanism (PC) 26 Lower hook 30 Holding mechanism (ANT)
30a U-shaped groove 31 Holding rib (upper opening) 32 Holding rib (lower opening)
39 Key-shaped piece 90 Control circuit 91 Fire detection circuit 92 Out-of-batter detection circuit 95 Lighting circuit 96 Lighting circuit 97 Transmission circuit 98 Constant voltage circuit L Antenna length O Axis center OO Axis line R1 Storage chamber (battery)
R1 storage room (optical system) θ rotation angle

Claims (2)

A base installed on the ceiling surface, etc., a covered cylindrical main body that is detachably attached to the base, a battery that supplies power to an electronic member housed in the main body, and a bottom surface of the main body that is removable A wireless transmitter comprising an abnormality detection means that is accommodated in a cover to be attached and detects the occurrence of an abnormality, and a wireless transmission means that transmits an abnormality signal detected by the abnormality detection means to the outside via an antenna. ,
An annular wall protruding from the upper surface of the lid plate of the main body, an arc wall circumscribing the annular wall on the base, and a peripheral wall disposed outside the annular wall, and the inside of the annular wall A wireless transmitter characterized in that the battery is stored in a storage chamber formed by recessing a cover plate. And fixed to sandwiched the battery by a hook provided opposite to the side wall of the housing chamber, and an upper portion of the storage chamber, wherein that you have been covered with the base via the external shape of the battery The wireless transmitter according to claim 1.

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