JP2002216262A - Radio transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio transmitter with a simple fixing structure for an internal battery, facilitating ejection of the battery, and reducing adverse effects to the battery by water leakage from a ceiling. SOLUTION: This radio transmitter is provided with a base installed on a ceiling face or the like, a cylindrical body with a lid detachably attached to the base, the battery feeding power to an electronic member housed in the body, an anomaly detecting means housed in a cover detachably attached to a bottom face side of the body and detecting anomaly, and a radio transmission means transmitting an anomaly signal detecting by the anomaly detecting means to the outside via an antenna. The battery is housed in a housing chamber formed by protrudedly providing an annular wall on the upper face of a cove plate of the body and caving the cover plate into the interior of the annular wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless transmitter for wirelessly transmitting an abnormal signal detected when an abnormality occurs,
More specifically, the present invention mainly relates to a storage structure of a battery for a power supply in a wireless transmitter.

[0002]

2. Description of the Related Art For example, a conventional abnormality detector, such as a fire detector, which is provided in each dwelling unit of a condominium or a ceiling of a detached dwelling unit, for example, a fire detector, is a home controller installed in each dwelling unit by a line. Or it is connected to a receiver such as a house information panel. When an abnormality occurs, an abnormality detector provided in the dwelling unit detects the abnormality, and the detected abnormality signal is sent to a receiver via a line to display the occurrence of the abnormality, and the abnormality signal is displayed. The information is sent from the home controller to the security company that manages the home controller, or from the house information panel to the house receiver if the house information panel is connected to the house receiver. Most of the conventional abnormality detectors use a wire as a signal transmission unit, and there are few wireless abnormality detectors.

[0003]

If a battery for power supply is incorporated in the above-mentioned conventional abnormality detector and an abnormality signal is transmitted wirelessly, wiring for introducing a commercial power supply and the abnormality detection described above can be achieved. There is a feature that the indoor ceiling wiring such as the line between the equipment can be omitted. However, if the power supply voltage of the built-in battery in the abnormality transmitter configured as a wireless system drops, the original abnormality detection operation or signal transmission becomes impossible, and the battery needs to be replaced. In this case, there is a problem that replacement of batteries of the transmitter installed on the ceiling is not only troublesome, but also problems may occur due to contact with the internal components of the transmitter during disassembly accompanying removal of the built-in battery.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and has a simple structure for fixing a built-in battery, a structure for easily taking out a battery, and a method for preventing water leakage from a ceiling. It is an object of the present invention to realize a wireless transmitter of a new wireless transmission method in consideration of the above.

[0005]

SUMMARY OF THE INVENTION The present invention supplies power to a base installed on a ceiling surface or the like, a covered cylindrical main body detachably attached to the base, and an electronic member housed in the main body. A battery, abnormality detecting means housed in a cover detachably attached to the bottom surface side of the main body and detecting the occurrence of an abnormality, and a wireless transmitting means for transmitting an abnormality signal detected by the abnormality detecting means to the outside via an antenna A wireless transmitter having a battery provided in a storage chamber formed by projecting an annular wall on the upper surface of a lid plate of the main body and depressing the lid plate inside the annular wall. It is composed. Further, in the above, the wireless transmitter is configured so that the battery is clamped and fixed by the hook provided opposite to the side wall of the storage chamber.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 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 FIG. 3 is an explanatory view showing the shape of the housing of the main body, FIG. 3 (a) is a top view, FIG. 3 (b) is a bottom view, FIG. 4 is an explanatory view showing the internal structure of the main body, and FIG. FIG. 3B is a bottom view. 1 to 4, reference numeral 1 denotes a wireless transmitter attached to a ceiling W or the like to detect a fire. 2 is a main body, 3 is a cover, and 4 is a base, and these constitute a wireless transmitter 1 (hereinafter, transmitter 1). Reference numerals 5 and 6 denote a battery and a printed circuit board (PC board) arranged at the upper and lower parts in the main body 2, and 7 comprises a transmitting circuit, a control circuit, and the like mounted on the upper surface of the PC board 6 and leading out an antenna 7a. The transmission module 8 is an optical system that is a part of the abnormality detection means (fire detection means).

The casing of the transmitter 1 is made of a flame-retardant resin such as ABS, and the casings 2a and 4a of the main body 2 and the base 4 are used.
Each of them has a substantially closed cylindrical shape with a lower opening, and the housing 3a of the cover 3 is molded in a dish shape. The cover 3 and the base 4 are detachably attached to the lower and upper parts of the main body 2 with the main body 2 interposed therebetween. Numeral 11 denotes the case 2a up and down 2
Lid plate (hereinafter, mainly FIGS. 1 and 3), 12
Is a peripheral wall extending to the lower bottom side via a step at the peripheral portion of the lid plate 11, 13 is an annular inner wall protruding above the lid plate 11, 14 is an outer wall of the inner wall 13 Wide and narrow two-step arcuate fitting grooves formed in two places, 15 and 16
Are first and second depressions formed continuously with the cover plate 11.

The first recessed part 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 room R1 for storing two batteries 5 for power supply connected in parallel and integrated. 1
Reference numeral 7 denotes a pair of upper hooks opposed to the long sides on both sides of the second recessed portion 16 for holding the battery 5 in the storage chamber R1.
In FIG. 3B, 21 and 22 are provided with radial elasticity by two guide grooves formed at equal angular intervals of 180 ° and 120 ° in the axial direction of the peripheral wall 12 and slits on both sides. Although not shown in detail, a rectangular locking hole 23 (shown only by a two-dot chain line) is provided near the movable end of the movable piece 22.

Reference numeral 25 denotes a mounting mechanism (collectively) for the PC board 6, which has a combined structure of the following three members provided on the bottom surface side of the housing 2a. 26 are two lower hooks extending from the bulging portion 16a to the bottom surface along the side wall of one long side of the bottom surface side (the bulging portion 16a on the bottom surface side) of the second recessed portion 16;
Numeral 7 denotes two hooks facing the lower hooks 26 on the peripheral wall side, and numeral 28 denotes two thin positioning rods. The lower hook 26 and the hook 27 of the combined structure are provided with two receiving stands 26a and 27a projecting from the bottom side of the cover plate 11, and the lower hook 26 and the hook are provided for these receiving stands 26a and 27a. Numerals 27 face each other with a gap corresponding to the thickness of the PC board 6. Then, when the PC board 6 is assembled in a procedure to be described later, the PC board 6 is positioned on the bottom side in the housing 2a by the three-member mounting mechanism 25, and the PC board 6 is detachably mounted in a horizontal state.

Reference numeral 30 denotes a holding mechanism (3) for the antenna 7a.
Reference numeral 0 is a generic name in FIG. 5), and is constituted by a plurality of, for example, two pairs of holding ribs 31 and 32 in which U-shaped grooves 30a whose cut ends are slightly larger than the wire diameter of the antenna are alternately opened upward and downward. ing. These holding ribs 31 and 32 are attached to the peripheral wall 1.
2 are provided in the longitudinal direction (axial direction) at intervals on the inner peripheral surface of the tip. FIG. 4B is a plan view showing a state in which the transmitting module 7 from which the antenna 7a is derived is mounted on the PC board 6, and a side view of the pair of holding ribs 31 and 32 is shown in FIG.
On the left and right. As shown in FIG. 5, when the transmitter 1 is installed on the ceiling W surface, the antenna 7a
It is held by holding ribs 31 and 32 so as to be lower. As the antenna 7a led out of the transmission module 7, an elastic metal wire such as a nickel-titanium alloy that restores a linear memory shape quickly when the external force is released is used. Since the antenna 7a is held by the U-shaped groove 30a having a widened cut, it is possible to cope with a change in the wire diameter.

FIG. 6 shows a stored and expanded state of the antenna 7a mounted on 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. In FIG. 6, reference numeral 33 denotes a positioning hole, which is formed in two places on the PC board 6 corresponding to the positioning rod 28 described above. An electronic member displayed in a deformed hexagonal form on the PC board 6 alongside the transmission module 7 indicates a mounted state of a fire detection circuit 91 described later provided with an amplifier covered by a shield case. Numerals 34 and 35 denote arc sides and straight sides of the PC board 6, and the arc of the arc side 34 is formed so as to form an inscribed circle of the peripheral wall 12 of the main body 2.

FIGS. 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.
(C) is a bottom view. 7A to 7C, reference numeral 36 denotes an insertion hole through which a screw 37 (FIG. 1) for fixing to the ceiling W is inserted, 38 denotes two arc-shaped molding discard holes,
Reference numeral 39 denotes two key-shaped pieces provided in the disposal hole 38 and protruding to the bottom side, 41 denotes a peripheral wall of the base 4, and 42 denotes an arc wall concentric and symmetrical with the peripheral wall 41 on the bottom side. The key-shaped piece 39 corresponds to the fitting groove 14 of the main body 2 provided on the main body 2, and the arc wall 42 circumscribes the inner wall 13 of the main body 2. And fitting groove 1
When the main body 2 is assembled to the base 4 by fitting the main body 2 to the base 4, the arc wall 42 circumscribes the inner wall 13 and the fitting groove 14
(FIG. 4 (b)).

Returning to FIGS. 1 and 2, R2 is a storage room for the optical system 8 formed in the thread cutting portion of the dish-shaped cover 3, 45 is a peripheral wall of the cover 3, and 46 is a portion formed below the inclined surface. A plurality of radiation ribs (fins), 47 is a cover plate connected to the radiation rib 46, and 48 is a smoke inlet. The cover plate 47 covers the lower surface of the storage room R2 to protect the optical system 3 housed therein. Although not shown, a ridge and a triangular projection (both not shown) corresponding to the two guide grooves 21 and the three locking holes 23 formed in the housing 2a are formed on the inner peripheral surface of the peripheral wall 45. 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 falling off is achieved by fitting the set of projections and the locking holes 23 together.

Reference numeral 51 denotes an insect repellent net of the optical system 8, and reference numeral 52 denotes a labyrinth surrounded by the insect repellent net 51. Labyrinth 5
2, a light emitting and receiving element (not shown) is provided to constitute a smoke detector for detecting scattered light generated by smoke from a fire. 53 and 54 are two indicator lights for fire / wireless transmission, which extend from the PC board 6 to the side of the optical system 8 and hang down. As will be described later, the indicator light 53 is lit in red during a fire and wireless transmission, and the indicator light 54 is illuminated in yellow when a failure condition such as a voltage drop of the battery 5 for the power source is used to visually confirm each state. Let it. 1 and 4 (b) show the axis OO and the axis O of the transmitter 1, and [theta] indicates the rotation angle when the main body 2 and the base 4 are attached and detached. FIG.
In FIG. 5A, reference numeral 56 denotes a connector plug of the battery 5, and reference numerals 57 and 58 denote a connector socket mounted on the PC board 6 and a rotary switch for setting a transmission frequency channel.

FIG. 8 is a block diagram showing the configuration of the circuit section of the first embodiment. In FIG. 8, reference numeral 9 denotes a circuit section of the transmitter 1, which is constituted by electronic components and the like mounted on the PC board 6. 90 is a control circuit for controlling the inside of the circuit section 9; 91 is a fire detection circuit including the optical system 8 for detecting light scattered by smoke;
2 is a battery exhaustion detection circuit, 93 is a switch circuit for adjusting and registering settings, and 94 is a switch circuit for channel setting.
Further, 95 and 96 are lighting circuits of the indicator lamps 53 and 54,
Reference numeral 97 denotes a transmission circuit that wirelessly transmits a fire signal from the antenna 7a, and 98 denotes a control circuit that sets the power source of the battery 5 to a constant voltage.
It is a constant voltage circuit to be supplied to the like.

The outline of the operation of the transmitter 1 having the above configuration is shown in FIG.
This will be described next with reference to the block diagram of FIG. A. Normal Monitoring Operation Normally, since “fire” and “battery exhaustion” are not detected, the control circuit 90 transmits a receiver (for example, a home controller) wirelessly by the antenna 7a via the transmission circuit 97 at predetermined time intervals. ) To send a normal signal.

B. When smoke, heat, flame, gas or gas leakage caused by a fire is detected, a detection signal is input to the control circuit 90,
It is transmitted wirelessly to the receiver. At that time, the indicator light 53 lights in red. When the fire is recovered, the indicator lamp 53 is turned off at that time and the display is recovered during normal monitoring.

C. When the battery voltage at the time of transmission at the time of battery exhaustion detection falls below a predetermined value, the battery is transmitted at a predetermined interval and the battery exhaustion detection is performed each time. When the battery is exhausted, the battery exhaustion signal is wirelessly transmitted to the receiver via the transmission circuit 97. The indicator light 54 flashes when it detects that the battery has run out. It should be noted that when the value exceeds a predetermined value due to the detection of the exhaustion of the battery, it is restored during the normal monitoring.

Next, a procedure for assembling and disassembling the transmitter 1 and a procedure for replacing the battery will be exemplified. A. Assembly procedure previously, the base 4 is allowed to protrude Kagikatachihen 39 as in FIG. 7 (b), together are fixed by fixing screws 37 to the ceiling W surface or the like (FIG. 1), figures in the PC board 6 As shown in 6,
It is assumed that electronic components and electronic circuits such as the transmission module 7 and the optical system 8 are mounted. 1. The main body 2 is placed on a desk or the like with the bottom side facing upward. The PC board 6 with the optical system 8 facing upward is directed from the top of the mounted main body 2 to the PC plate 6, and the arc-shaped side 34 is formed between the hook 27 provided on the peripheral wall 12 of the main body 2 and the receiving stand 27 a. Plug in. At this time, the antenna 7a on the PC board 6
Is inserted into the positioning rod 28.

2. After being inserted into the gap between the arcuate sides 34, the opposing straight sides 35 are pushed down to make contact with the key-shaped inclinations of the two lower hooks 26. The free end of the lower hook 26 is tilted outward by contact with the straight side 35 of the PC board 6, and the area near the straight side 35 is pressed and dropped under the chin of the key hook, and is held down by the cradle 26a and the lower hook 26. Mounting mechanism 2
By this operation of 5, the PC board 6 is held in a predetermined position inside the main body 2 in the horizontal direction and incorporated. 3. When the PC board 6 is assembled by the above mounting, the antenna 7a derived from the transmission module 7 is pulled out obliquely upward from the vicinity of the positioning rod 28 on the peripheral wall 12 side. The vicinity of the drawn-out portion of the pulled-out antenna 7a is bent, guided to the first holding rib 31 of the holding mechanism 30, and engaged with the upward U-shaped groove 30a. The tip of the antenna 7a, which is far from the initial engagement position, is pushed down slightly to make the next holding rib 3
2 is elastically hooked in the downward U-shaped groove 30a.

4. The above-mentioned engaging operation (3.) 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 alternately in the upper and lower directions. As a result, the linearly derived antenna 7a can be elastically suspended along the circular peripheral wall 12 centered on the axis O. 5. Next, the cover 3 is put on the main body 2. At this time, the guide groove 21 provided on the peripheral wall 12 of the main body 2 and the movable piece 22
The inner locking holes 3 serve as a guide and a lock function when the cover 3 is attached to the main body 2.

6. Thereafter, the main body 2 can be attached to the base 4 by rotating the θ angle by fitting the pair of fitting grooves 14 to the pair of key-shaped pieces 39. In this way, the transmitter 1 attached to the ceiling W performs an operation of monitoring the occurrence of a fire within a monitoring range on the floor centered on the vertical axis.

B. Disassembly procedure is basically the reverse of the above assembly. 1. The main body 2 integrated with the cover 3 is turned by an angle θ in a direction opposite to the direction at the time of attachment, and detached 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 side of the movable piece 22 of the housing 2a toward the axis. 3. The antennas 7a are sequentially removed from the holding ribs 31 and 32 that are alternately held on the top and bottom. Antenna 7
a is restored to a linear shape.

4. While lowering the two lower hooks 26,
The straight side 35 side of the C plate 6 is lifted and released from under the chin of the hook. Then, the fitting between the positioning hole 33 and the positioning rod 28 is also released, and the arc-shaped side 34 side of the PC board 6 is pulled out from the hook 27. With this operation, the PC board 6 is removed from the mounting 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 room R1.

C. Battery Replacement Procedure Next, a battery replacement operation accompanying 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 the angle θ to remove the main body 2 side 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. When the connector plug 56 is pulled out, the lead wire of the battery 5 becomes PC
Separate from plate 6. C. The facing upper hook 17 is expanded and the storage room R1 is opened.
And take out the two bundled batteries 5 from the above.

D. The new battery 5 is taken out, and while being spread between the inclined surfaces of the pair of upper hooks 17, the storage room R1 is opened.
Drop it inside. E. FIG. When the connector plug 56 is inserted into the connector socket 57, a new battery 5 is connected to the PC board 6. F. The fitting groove 14 of the main body 2 is fitted into the key-shaped piece 39 of the base 4 left on the ceiling W, and the battery 5 is rotated in the opposite direction of the angle θ.
The replaced transmitter 1 is mounted on the ceiling W, and the normal fire monitoring operation is resumed.

Embodiment 2 FIG. FIG. 9 is an explanatory view showing the structure of the second embodiment of the present invention, in which (a) is a side view of the transmitter 1,
(B) is a bottom view. The difference between the second embodiment and the first embodiment lies in the principle components for detecting a fire. In the first embodiment, the optical system 8 for detecting smoke at the time of a fire is used. Instead, in FIG. 9, a heat sensing unit 8a for detecting a thermal change at the time of a fire, such as a thermistor, is provided. ing. If the heat sensing part 8a is used,
The configuration of the sensing unit can be simplified as compared with the optical system 8. The procedure for assembling and disassembling the transmitter 1 and the transmitting operation are substantially the same as those in the first embodiment, and thus the description thereof will not be repeated.

In the above-described embodiment of the present invention, a smoke detector and a heat detector, which are fire detectors, have been described by way of example. However, ions, flames, specific gases or combustion generated by a fire may be generated. The present invention can also be applied to fire detection means using a different principle for detecting an object or the like. Furthermore, not only fire detectors, but also abnormalities are detected,
The present invention can also be applied to an abnormal transmitter for transmitting the abnormal signal, for example, a security / burglary detector. In addition, the battery is stored in the storage chamber by the key-shaped hook, but a hook having an arc portion along the outer diameter of the battery may be used. It is not limited to the embodiment.

[0029]

According to the present invention, there are provided a base installed on a ceiling surface or the like, a covered cylindrical main body detachably attached to the base, a battery for supplying power to electronic members housed in the main body, and a main body. Abnormality detection means for detecting the occurrence of an abnormality housed in a cover detachably attached to the bottom side of the
A wireless transmission means for transmitting an abnormal signal detected by the abnormality detection means to the outside via an antenna, wherein the annular wall protrudes from an upper surface of a cover plate of the main body, and is provided inside the annular wall. A wireless transmitter in which the battery was stored in a storage chamber formed by depressing a lid plate was constructed. Further, in the above, the wireless transmitter is configured so that the battery is clamped and fixed by the hook provided opposite to the side wall of the storage chamber. As a result, since the built-in battery is fixed by the pair of hooks, the structure for fixing the battery is extremely simplified. In addition, the battery can be taken out immediately by removing the main body with the cover from the base, and the operation of replacing the battery and the like becomes extremely easy. In addition, since the battery storage chamber is formed so as to be independently isolated by depressing the cover plate, replacement or the like can be performed without affecting other electronic components. In addition, the upper part of the storage room that houses the batteries is covered by the base, and the side surface is surrounded by an annular inner wall, so it is strong against external shocks and can reduce the adverse effects of water leakage from the ceiling surface Become.

Therefore, according to the present invention, it is possible to provide a wireless transmitter in which the structure for fixing the built-in battery is simple, the battery can be easily taken out, and the bad influence of the battery due to water leakage from the ceiling is reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a structure according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an appearance of the first embodiment.

FIG. 3 is an explanatory diagram showing a shape of a housing of a main body.

FIG. 4 is an explanatory diagram showing a structure inside a main body.

FIG. 5 is a partial side view of a holding mechanism of the antenna.

FIG. 6 is a plan view of a printed circuit board on which an antenna is mounted.

FIG. 7 is an explanatory view showing a shape of a base housing.

FIG. 8 is a block diagram illustrating a circuit configuration according to the first embodiment;

FIG. 9 is an explanatory diagram illustrating a structure according to a second embodiment of the present invention.

[Explanation 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 Perimeter 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 open) 39 Key-shaped piece 90 Control circuit 91
Fire detection circuit 92 Battery exhaustion detection circuit 95 Lighting circuit 96
Lighting circuit 97 Transmission circuit 98 Constant voltage circuit L
Antenna length O axis O-O axis R1
Storage room (battery) R1 Storage room (optical system) θ Rotation angle

Continued on the front page (72) Inventor Kazuyuki Koganaru 4-7-3, Kudanminami, Chiyoda-ku, Tokyo Nomi FRM Inc. F-term (reference) 5G405 AA04 AA08 AD05 BA07 CA57 FA12 5K060 AA07 AA14 DD01 MM02 MM03

Claims (2)

[Claims] 1. A base installed on a ceiling surface or the like, a covered cylindrical main body detachably attached to the base, a battery for supplying power to electronic members housed in the main body,
An abnormality detection unit that is housed in a cover that is detachably attached to the bottom side of the main body and detects the occurrence of an abnormality, and a wireless transmission unit that transmits an abnormality signal detected by the abnormality detection unit to the outside via an antenna. A wireless transmitter provided with an annular wall protruding from an upper surface of a lid plate of the main body, and storing the battery in a storage chamber formed by depressing the lid plate inside the annular wall. A wireless transmitter characterized by: 2. The wireless transmitter according to claim 1, wherein the battery is clamped and fixed by a hook provided opposite to a side wall of the storage chamber.