JP3837904B2 - Fire alarm repeater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a fire alarm relay device that is used by being electrically connected to a fire detector and a fire receiver, and more specifically, a fire is generated in a fire receiver in response to a signal from the fire detector. The fire connected to this repeater is triggered by receiving an alarm signal from the fire receiver and opening the cover to electrically connect the external tester to the internal connector. The present invention relates to a relay device of a fire alarm facility in which an operation test of a sensor is performed by an external tester.
[0002]
[Prior art]
Recently, the number of fire alarms including fire detectors is increasing in private homes, and fire detectors installed indoors need to be inspected regularly. However, there may be no resident during the inspection, and it is generally not preferred for the inspector to enter the room. Therefore, for example, as disclosed in Japanese Patent Application Laid-Open No. 9-161189, an invention for inspecting a fire detector from outside has been proposed.
In carrying out such an invention, for example, a device such as a repeater equipped with a fire detector inspection function is installed on an outdoor wall surface as in the case of meter reading of power and gas consumption, and this device It is conceivable to check the fire detector from outside using
[0003]
[Problems to be solved by the invention]
When using a repeater for inspection of a fire detector installed indoors, the repeater generally controls a terminal block, a buzzer, an indicator lamp, and these that connect external wiring connected to the fire detector and fire receiver. In addition, there are mounted electronic components and other components that connect the fire detector and the external tester.
[0004]
On the other hand, such a repeater is often installed in a place where rainwater is likely to be applied, such as an outer wall surface of a building or a wall surface of a common corridor such as an apartment.
For this reason, the following structure is required for the repeater, particularly its housing.
(1) The housing is small.
(2) It can be easily mounted on a wall surface.
(3) The housing is watertight and drainage is well formed, and rainwater or the like does not enter inside.
(4) Fire detectors installed indoors should be easy to inspect, and rainwater should not enter inside during inspections during rainfall.
[0005]
The object of the present invention is to obtain a repeater for fire alarm equipment having the above-described structure.
[0006]
[Means for Solving the Problems]
(1) The repeater of the fire alarm facility according to the present invention includes a main body provided with a terminal block to which external wiring is connected, a buzzer, a display, and a connector to which an external tester is connected, and the main body can be freely opened and closed. The main body comprises a vertical wall provided on the upper and both sides of the bottom plate of the main body, and a waterproof wall provided upright above the vertical wall on the inner side and the lower side of the vertical wall, A pair of rotation restricting portions provided on both upper sides of the vertical wall and having a hinge hole and an arcuate guide groove having a radius r around the hinge hole, and the cover is formed on both upper inner walls of the cover. A pair of hinge pins that are rotatably fitted in the hinge holes and a pair of movable pins that are slidably fitted in the guide grooves, and at least one of which the movable pins engage with the guide grooves Is provided with a locking recess .
[0007]
(2) The waterproof wall of the above (1) is formed in a mountain shape having a high central portion in order to enhance drainage.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 is a perspective view showing a state in which a cover of an embodiment of the repeater according to the present invention is opened, FIG. 2 is a perspective view showing a state in which the cover is closed, and FIG. 3 is an exploded perspective view of FIG. The invention comprises a main body 1, a printed circuit board 21 mounted in the main body 1, and a cover 31 attached to the main body 1 so as to be freely opened and closed.
[0011]
The main body 1 is made of a synthetic resin molded product, and as shown in FIG. 4, vertical walls 3 are provided on the upper and both sides of the bottom plate 2, and waterproof walls 4 higher than the vertical walls 3 stand on the inner and lower sides. It is installed. The upper side of the waterproof wall 4 is formed in a mountain shape with a high central portion in order to enhance drainage, and a locking piece 5 having a locking claw 6 on the lower surface is provided at the central portion of the lower side. Reference numeral 7 denotes a drainage groove formed between the vertical wall 3 and the waterproof wall 4. Reference numeral 8 denotes a mounting portion of the printed board 21, 9 denotes a pair of left and right hooks, and 10 denotes a screw hole for fixing the printed board 21. 11a is a screw insertion part for fixing the main body 1 to a wall surface or the like, 11b is a long hole part for screw insertion, and 12 is an intake hole for external wiring.
[0012]
Reference numeral 13 denotes a rotation restricting portion of a pair of covers 31 provided at the upper end of the vertical wall 3, which is formed in a substantially fan shape as shown in FIG. 14 is provided, and an arcuate guide groove 15 having a radius r about the hinge hole 14 is provided on the outer surface. And the latching recessed part 16 is provided in the terminal part side a little from the start part of this guide groove 15, and the bottom part of the guide groove 15 turns into a terminal part from a start part, as shown in FIG.5 (b). Accordingly, the end portion of the inclined surface 17 is substantially the same depth as the bottom of the locking recess 16. Reference numeral 18 denotes a waterproof sheet made of, for example, a foam bonded to the back surface of the main body 1. Note that the number of the locking recesses 16 is not limited to one, and a plurality of the locking recesses 16 may be provided in the guide groove 15.
[0013]
In the printed circuit board 21, 22 is a power supply line, a terminal block to which external wiring such as a signal line from a fire detector is connected, 23 is a buzzer, 24 is an indicator lamp, 25 is a connector to which an external tester is connected, and 26 is This is a positioning hole that fits into the screw insertion portion 11 a of the main body 1. Reference numeral 27 denotes insulating paper.
[0014]
The cover 31 is made of a synthetic resin molded product, is formed in a box shape by the top plate 32 and the peripheral wall 33, and has a cylindrical portion that has an acoustic hole 35 on the inner surface of the top plate 32 and fits into the buzzer 23 of the printed circuit board 21. 34 and a light shielding cylinder 36 that is fitted to the indicator lamp 24 and prevents light from leaking, and a locking hole 37 that locks the locking claw 6 of the main body 1 is formed on the lower wall of the peripheral wall 33. Is provided. Reference numeral 38 denotes a guide rib for guiding the locking piece 5 of the main body 1.
[0015]
Reference numeral 41 denotes a pair of hinge pins that protrude from the upper end portions of the inner surfaces of both side walls of the peripheral wall 33, and are rotatably fitted in the hinge holes 14 of the main body 1. Reference numeral 42 denotes a distance r from the hinge pin 41 (this distance r is the distance of the main body 1). A pair of movable pins that protrude from the hinge hole 14 and the guide groove 15 (equal to the radius r between the hinge hole 14 and the guide groove 15) and fit into the guide groove 15 of the main body 1, and the opposite side of the tip portion of the movable pin into the guide groove 15 On the side, as shown in FIG. 7, an inclined surface 43 that narrows toward the tip is formed. The movable pin 42 is formed longer than the depth of the start end portion of the guide groove 15. Further, in order to facilitate the insertion into the hinge hole 14, an inclined surface may be provided at the tip of the hinge pin 41 as with the movable pin 42.
[0016]
Next, an example of the assembly procedure of the repeater configured as described above will be described. It is assumed that the acoustic holes 35 of the cover 31 are waterproofed.
(1) The waterproof sheet 18 is bonded to the back surface of the main body 1.
(2) The lower part of the printed circuit board 21 is inserted into the hook 9 provided in the attachment part 8 of the printed circuit board 21 of the main body 1, and the positioning hole 26 provided in the upper part is fitted into the screw insertion part 11a.
(3) The insulating paper 27 is brought into contact so that the indicator lamp 24 is exposed, and is fixed to the main body 1 together with the printed circuit board 21 with the screws 28.
[0017]
(4) The hinge pin 41 provided at the upper end portion of the cover 31 is rotatably fitted into the hinge hole 14 provided in the rotation restricting portion 13 of the main body 1 using the elasticity of the side wall 33.
(5) The cover 31 is rotated around the hinge pin 41 and is put on the main body 1. At this time, the movable pin 42 enters the guide groove 15 from its starting end and slides along the guide groove 15, and the locking hole 37 is locked to the locking claw 6 of the main body 1.
[0018]
Next, the opening / closing action of the cover 31 by the rotation restricting portion 13 will be described with reference to FIG.
First, in a state where the hinge pin 41 is fitted in the hinge hole 14, the cover 31 is held substantially horizontally on the opposite side of the main body 1 as shown in FIG.
Further, when the cover 31 is rotated about 90 °, the movable pin 42 comes into contact with the upper edge portion of the rotation restricting portion 13, and the cover 31 is substantially perpendicular to the main body 1 as shown in FIG. Retained.
[0019]
When the cover 31 is further rotated in the same direction, the movable pin 42 enters the guide groove 15 and slides along the guide groove 15, and is fitted into the locking recess 16 and stopped. As a result, the cover 31 is held in an open state with respect to the main body 1 at an angle θ as shown in FIG. In the embodiment, the angle θ is set to 70 °, but can be changed as appropriate by changing the position of the locking recess 16.
[0020]
Further, when the cover 31 is rotated in the same direction, the movable pin 42 slides along the inclined surface 17 of the guide groove 15 and stops at the end portion thereof. At this time, as shown in FIG. 8D, the cover 31 is completely fitted to the main body 1, and the hinge pin 41 and the movable pin 42 are located on substantially the same horizontal line.
[0021]
When the cover 31 is opened, the cover 31 is opened in an order opposite to that described above by an angle θ with respect to the main body 1, a state in which the cover 31 is open approximately 90 °, and a state in which the cover 31 is open substantially horizontally on the opposite side of the main body 1. it can.
Note that when the cover 31 is opened and closed, the tip of the movable pin 42 is provided with an inclined surface 43, so that the guide groove 15 can be smoothly inserted and removed with a small force. be able to.
[0022]
Next, an example of a procedure for attaching the repeater according to the present invention to the installation location (wall surface 45 in this example) will be described with reference to FIG. First, the locking claw 6 of the main body 1 is pressed from the locking hole 37 of the cover 31 with a coin, for example, to release the lock and open the cover 31. At this time, the movable pin 42 slides along the guide groove 15 and fits into the locking recess 16 and stops. When the cover 31 is further opened, the movable pin 42 is detached from the guide groove 15 and stops by hitting the upper edge of the rotation restricting portion 13 due to the weight of the cover 31, and the cover 31 is opened approximately 90 ° with respect to the body 1. The held state is maintained (the state shown in FIG. 8B). In this state, as shown by a broken line in FIG. 9, the cover 31 can be further opened from the position of the solid line until the corner of the cover 31 abuts against the wall surface 45.
[0023]
Then, external wiring (not shown) drawn from the wall surface 45 is taken out from the wiring taking-in hole 12 of the main body 1 and connected to the terminal block 22.
Next, the wiring lead-in hole 12 of the main body 1 is assigned to the position of the wiring lead hole provided in the wall surface 45, and the screw 29 is inserted into the screw insertion portion 11 a and the long hole portion 11 b of the main body 1 and screwed into the wall surface 45. , Fix. Finally, the cover 31 is closed and the locking hole 37 is locked to the locking claw 6 to lock it.
[0024]
Next, an example of inspection of the fire detector installed indoors will be described with reference to FIG. 10 using the repeater installed outdoors.
(1) The cover 31 is opened to a position where the cover 31 is stopped (the movable pin 42 is fitted into the locking recess 16).
(2) The connector 30 of the external tester is connected to the connector 25 mounted on the printed circuit board 21 accommodated in the repeater.
[0025]
(3) Output a remote test command from the external tester to the fire detector.
(4) The fire detector performs an operation test based on the remote test command, and the operation signal (report signal) is transmitted to the fire receiver (not shown) via the repeater.
[0026]
(5) The fire receiver displays the alarm (fire display) of the fire detector that performed the remote test and sends an alarm signal to the repeater.
(6) The repeater receives an alarm signal from the fire receiver, displays an alarm with the indicator lamp 24, and issues an alarm with the buzzer 23.
(7) If there is no abnormality as a result of the test, the connector 30 is removed, the cover 31 is closed, the locking hole 37 is locked to the locking claw 6 and locked.
[0027]
The repeater according to the present invention is very convenient because the fire detector installed indoors can be inspected outdoors as described above. Further, since the waterproof sheet 18 is adhered to the back surface of the main body 1, there is no possibility that rainwater flowing down along the wall surface 45 enters the main body 1. Furthermore, rainwater applied to the upper part or front surface of the case 31 due to wind and rain is also blocked by the waterproof wall 4 and does not enter the mounting portion 8 of the printed circuit board, and there is no possibility of causing an electrical failure.
[0028]
Furthermore, since the cover 31 can be opened in a plurality of stages by the rotation restricting portion 13, it is very easy to attach the repeater to a predetermined position and to inspect the fire detector. In addition, even when the fire detector is inspected in the rain, the cover 31 is opened at an angle of 90 ° or less (for example, 70 °) with respect to the main body 1 so that the work is performed. The cover 31 becomes an umbrella of the main body 1, and rainwater hardly enters inside.
[0029]
【The invention's effect】
The repeater of the fire alarm facility according to the present invention includes a main body provided with a terminal block to which external wiring is connected, a buzzer, a display, and a connector to which an external tester is connected, and is pivotally supported by the main body so as to be freely opened and closed. The main body has a vertical wall provided on the top and both sides of the bottom plate of the main body, and
A waterproof wall standing higher than the vertical wall inside and below the vertical wall, and a hinge hole and an arcuate guide groove with a radius r centering on the hinge hole are provided on both sides of the vertical wall. A pair of rotation restricting portions, and the cover is provided on both inner walls of the cover, and is slidably fitted into the pair of hinge pins and the guide grooves that are rotatably fitted in the hinge holes. A fire detector provided with a pair of movable pins and provided with at least one locking recess for locking the movable pin in the guide groove, so that the repeater is installed at the installation location and installed indoors after installation. The inspection work is extremely easy. Moreover, even if installed outdoors, rainwater can be prevented from entering the interior.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a cover according to an embodiment of the present invention is opened.
FIG. 2 is a perspective view showing a state in which the cover of FIG. 1 is closed.
FIG. 3 is an exploded perspective view of FIG. 1;
4 is a plan view and a side view of the main body of FIG. 1. FIG.
FIG. 5 is an enlarged view of the rotation restricting portion of FIG.
6 is a bottom view of the case of FIG. 1 and a cross-sectional view thereof taken along the line BB. FIG.
7 is an enlarged view of the movable pin of FIG.
8 is an operation explanatory view of a rotation restricting portion and a cover of FIG.
FIG. 9 is an explanatory diagram showing a state of construction of the repeater according to the present invention.
FIG. 10 is an explanatory diagram showing a state when checking the fire detector of the repeater according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 8 Printed circuit board mounting part 13 Rotation restricting part 14 Hinge hole 15 Guide groove 16 Locking recessed part 17 Inclined surface 21 Printed circuit board 22 Terminal block 23 Buzzer 24 Indicator light 25 Connector 31 Cover 41 Hinge pin 42 Movable pin

Claims (2)

A terminal block to which external wiring is connected, a buzzer, a display, a main body provided with a connector to which an external tester is connected, and a cover pivotally supported by the main body so as to be opened and closed.
The main body is a vertical wall provided on the top and both sides of the bottom plate of the main body,
A waterproof wall erected higher than the vertical wall on the inside and lower part of the vertical wall;
A pair of rotation restricting portions provided on both upper sides of the vertical wall and having a hinge hole and an arcuate guide groove having a radius r around the hinge hole;
The cover includes a pair of hinge pins that are provided on both inner walls of the upper part of the cover and are rotatably inserted into the hinge holes, and a pair of movable pins that are slidably inserted into the guide grooves,
A relay for fire alarm equipment , wherein at least one locking recess for locking the movable pin is provided in the guide groove . The repeater for a fire alarm system according to claim 1, wherein the waterproof wall is formed in a mountain shape having a high central portion in order to enhance drainage.

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