JP3463219B2 - Fire receiver - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire receiver in which a front door of a box is provided with a display section and an operation section, and has a fire monitoring function, a gas leak monitoring function, a smoke prevention / exhaust gas emission interlocking control function and the like. It concerns a fire receiver.

[0002]

2. Description of the Related Art FIG. 10 is a perspective view showing a state in which a door of a conventional fire receiver is opened, FIG. 11 is an exploded perspective view showing a structure of a part of the door of FIG. 10, and FIG. FIG. 13 is a sectional view showing a state in which the printed circuit board is mounted, and FIG.

In FIGS. 10 to 13, 1 is a fire receiver casing and 2 is a door. Reference numeral 22 is a window hole of the door 2, 23 is a large number of engaging pieces, and 24 and 25 are stud nuts and stud bolts. 3 and 4 and 5 are synthetic resin operation plates, display plates and additional display plates, and 31, 41 and 51 are bezels. The operation plate 3, the display plate 4, and the additional display plate 5 are all formed to have a width that matches the window hole 22 of the door 2. Further, grooves and protrusions for engaging with each other and with the edges of the window holes 22 are formed on the upper and lower sides and the left and right sides of the operation plate 3 and the like.

The lengths and intervals of the protrusions 32 on both sides of the operation plate 3 are set such that they can be inserted into the window holes 22 in which the engaging pieces 23 are formed. Further, reference numeral 37 is a power source holding portion provided on the operation plate 3, which is constituted by a substantially L-shaped cut and raised holding piece. Numerals 44 and 56 are display portions composed of a plurality of display windows provided in multiple stages and multiple rows on the display board 4 and the additional display board 5, 46 is an engaging portion provided on the display board 4, and 5a and 5b are additional display. This is an additional display board having the same structure as the board 5.

6 and 7 are a metal plate retainer and a reinforcing plate.
Reference numeral 1 is a leg portion of the holding metal fitting 6 which is divided into two, and reference numerals 70 and 72 are a horizontally long main body and a reinforcement portion of the reinforcing plate 7. 8a, 8b
Is a printed circuit board. A rewritable ROM such as an EEPROM in which setting data such as an interlocking matrix table is stored is mounted on the printed board 8a, and
The rewriting connector 8c is attached to the rear surface (see FIG. 1).
3). 8d is a notch provided at the position of the connector 8c of the printed circuit board 8a, 8e is a ROM rewriting device, and 8f is R.
This is a connector on the OM rewriting device 8e side. 9 is insulating paper, 1
0 is a handset.

Reference numeral 11 denotes a metal back plate such as a steel plate, which is attached to the housing 1 with a gap formed in the back surface for passing wiring. 1
2 is a wiring duct, 13 is a printed circuit board, 14 is a terminal block,
Reference numeral 15 is a protective plate, and 16 is a transformer. Wiring duct 1
2, the printed circuit board 13 and the transformer 16 are attached to the back plate 11. Reference numeral 18a is an insertion hole for the power supply wiring provided in the back plate 11, 18b is an insertion hole for the signal wiring, and 20 is a mounting hole for mounting the housing 1 on a wall surface or the like.

In the fire receiver constructed as described above, the operation plate 3 is inserted into the window hole 22 from the front surface and then pushed down along the groove on the side surface to be mounted on the door 2. By the same operation, the additional display board 5 and the display board 4 are put into the window holes 22 and attached to the door 2. The operation plate 3 mounted in the window hole 22, the display plate 4, and the additional display plate 5 are connected in a vertical relationship by engagement of a groove or a protrusion. Subsequently, the leg portion 61 is fitted into the engaging portion 46, and the holding metal fitting 6 is fixed to the stud nut 24 with a screw.

Next, the printed boards 8b and 8a are locked to the rear surfaces of the display board 4 and the operation board 3, and the screw inserted through the insertion hole is screwed into the stud nut 47 to be fixed. The insulating paper 9 is attached to the back surface of the fixed printed circuit boards 8a and 8b by pins or the like. After that, the reinforcing plate 7 is fixed by bridging the printed board 8b on the back side of the door 2 by using a nut screwed to the stud bolt 25.

A transformer 16, a printed circuit board 13 having a terminal block 14 and a protective plate 15 and the like are also attached to the back plate in the housing 1. After assembly, the device is transported in front of the wall at the installation site. The wiring for signals or the like is once drawn out from the wall surface into the gap between the wall surface on the back side of the back plate 11 and the housing, and then inserted into the insertion holes 18a and 18b and guided into the housing 1. Then, the housing 1 is fixed to the wall surface by the bolts passed through the mounting holes 20, and the fire receiver is installed in a monitoring center or the like.

When a fire occurs, the microcomputer causes the fire receiver to issue an alarm in the monitoring center, turn on the indicator light of the area on the display board, and control the terminal device in an interlocking manner. After that, when the user requests the setting of options, the addition of a fire detector, or the layout change, the ROM rewriting device 8 as shown by the arrow in FIG.
The connector 8f of e is connected to the printed circuit board 8a from the cutout 8d.
Connector 8c. And the printed circuit board 8
The setting data can be rewritten without removing the ROM of a to perform control corresponding to the system change.

On the other hand, instead of the display device in which the display windows are arranged in multiple rows and columns like the above-mentioned fire receiver, a display device for switching and displaying fire information etc. on a display using a CRT or liquid crystal is adopted. Has been done. If a device for switching and displaying display information on a CRT or a liquid crystal display is configured, the display is easy to see, and it is possible to cope with an increase in the amount of display information with a limited display area. This type of liquid crystal display device (referred to as LCD) is provided with a backlight for illumination, and the liquid crystal display element is irradiated with the projection light of the backlight that is constantly turned on.

Further, in the fire alarm receiver (No. Sho 63-39826) of FIG. 14, 1 is a main body, 2 is a lid,
3 is a printed circuit board, 6 is a metal plate radiator, 8 is a shield plate,
Reference numeral 10 is a bottom rear surface, T is a power transformer, and W is a wall. The main body 1 and the lid body 2 are formed of synthetic resin, and the lower portion of the radiator 6 is fixed to the transformer T through the opening 12 and is provided on the back surface of the bottom portion with a gap from the wall W. Then, while the heat generated by the power transformer T is shielded by the shield plate 8, the heat is dissipated to the outside through the radiator 6 on the back surface 10 like B,
The inside of the main body 1 is configured so as not to have a high temperature.

Further, in the conventional shaft supporting structure of the opening / closing part of FIG. 15 (No. 3-86973), 1 is a polygonal shaft main body, 3 is a groove, 4 is a rotary shaft, 5 is an E ring, and 6 is. A cover, 7 is a mounting portion, 8 is a polygonal hole, 9 is a groove, 10 is a stopper, 11 is a base, and 12 is a shaft hole. The shaft main body 1 is inserted into the polygonal holes 8 on both sides of the corner of the cover 6, the E-ring 5 is mounted in the grooves 3 and 9, and the stopper portion 10 prevents the shaft support structure from coming off.

[0014]

The conventional fire receivers shown in FIGS. 10 to 13 and FIGS. 14 and 15 described above have the following problems to be solved (Problem). was there. P-1 When an option is added after the product is shipped or a fire detector is added, the connector 8f of the ROM rewriting device 8e separately provided to the connector 8c on the board 8a is connected to rewrite new setting data. Is being carried out. Therefore, when rewriting the ROM, it is necessary to carry the large ROM rewriting device 8e each time to rewrite the ROM, and the rewriting operation of the ROM is extremely troublesome.

P-2 On the other hand, in this conventional fire alarm device, the operation plate 3 and the display plate 4 attached to the door 2 are considered to be dust-proof, but this is not always sufficient. Moreover, in the case of this fire alarm device, since the operation plate 3 and the like are successively fitted into the window holes 22 and pushed down, the fire alarm device is mounted.
There will be a gap at the top. For this reason, not only when mounting, but also in normal times, dust and dirt floating in the indoor space collect in the gaps of the window holes 22 and enter the inside of the housing 1 through the gaps. Garbage enters from the upper part between 8b.

When dust or dirt enters the inside of the P-3 housing 1, it is necessary to remove the dust or dirt, which requires time and effort for maintenance management. Further, if dust or the like enters the operation unit or the display unit, it may cause an erroneous operation or a deterioration in the display function. Further, dust accumulated on the surface of the electronic component causes heat generation in the electronic component, which may cause a failure.

P-4 The processing of the window hole 22 of the door 2 is complicated, and the mounting operation of the operation plate 3 etc. is troublesome. Further, the display plate 4 is provided with an engaging portion 46 into which the leg portion of the holding metal fitting 6 is inserted, and the holding metal fitting 6 having a bifurcated leg portion 61 formed by bending a metal plate is required. Moreover, the fixing screw and the stud nut 24 and the stud bolt 25 for screwing the screw together must be projected and fixed to the inner surface of the door 2 by welding or the like. For this reason, the machining and assembling of the door 2 are complicated and the number of parts is increased. In addition, the laborious work of welding the vertical stud nut 24 is also added, which increases the number of manufacturing steps and further increases the manufacturing cost. Although not shown, in the case of the disaster prevention panel described in Japanese Utility Model Laid-Open No. 54-107033, a central control unit including a display unit unit having a plurality of district display windows is screwed to the rack window. With this configuration, the number of parts is increased and the cost is increased as in the conventional device.

P-5 In a conventional liquid crystal display device used in a fire receiver or the like, no particular consideration was given to light leakage due to lighting of a backlight. Therefore, there is a drawback that the light of the backlight of the liquid crystal display device leaks to the outside of the device and spoils the appearance. Particularly, in the case of a fire receiver installed at night or in a dark room, the light of the backlight may leak through a gap between devices other than the display window. If light leaks through the gaps in the equipment, it may not only be mistaken for the occurrence of an abnormality in the electrical system, but it is also considered to be a device with a large gap in the housing etc. and has a design defect, and this may cause unfavorability to customers. I was worried about it.

A printed circuit board 13 and a power transformer 16 which easily generates heat are attached to a P-6 metal back plate 11. Therefore, various electronic components such as semiconductors such as a rectifier circuit and a constant voltage circuit are incorporated in the printed circuit board 13, and the influence of the heat generated by the power transformer 16 via the metal back plate 11 having high thermal conductivity. I'm more likely to get When a heat-sensitive electronic component undergoes a thermal change, the input / output relationship changes, causing malfunction.

On the other hand, in the fire alarm receiver of FIG. 14, on the other hand, in order to prevent the inside temperature from becoming high, the radiator 6 having the largest possible area is provided on the bottom rear surface 10 of the synthetic resin main body 1, and the power transformer. 16
A shielding plate 8 that surrounds the circumference is also provided. Therefore, also in the apparatus of FIG. 14, the number of parts increases and the cost increases.

P-8 Further, in the case of the shaft support structure shown in FIG. 15, a complicated polygonal hole 8 into which the shaft body 1 having a shape similar to the outer shape of the bolt is inserted is provided. Further, not only the E ring 5 is used for retaining, but a groove 9 for letting the E ring 5 escape is also formed. Therefore, also in this shaft support structure, the structure is complicated, the number of parts is large, and the cost is high, similarly to the above-described notification device.

The present invention has been made in order to solve the problems of the above-mentioned respective conventional devices. It has a small number of parts, a low manufacturing cost, and a heat dissipation structure that effectively uses the internal space, and is assembled. It is an object of the present invention to realize a fire receiver having various characteristics in addition to being easy.

[0023]

According to the present invention, a card having a memory in which setting data is stored, a connector provided on a control board and connected to the card, and a setting data of the card mounted on the control board. Fire with a rewritable memory that stores the data, a display and operation unit that has a resin-made unit board to which a control board is attached, and an insertion section that is provided on the unit board and that inserts a card into a connector on the control board. The receiver is configured.

Further, according to the present invention, a box body having a mounting hole on the front side, and a unit part including a control board mounted on the mounting hole of the box body, the front side constituting an operation panel and the back side mounted. In a fire receiver equipped with a display operation unit having a resin unit panel, a card having a memory in which setting data is stored, a connector provided on the control board and connected to the card, and a control board. A rewritable memory that is installed and stores the card setting data,
The fire receiver comprises a unit board and an insertion portion for inserting a card into a connector on a control board.

[0025]

[0026]

[0027]

[Function] A metal plate is used for the box of the fire receiver, and it is formed into a rectangular box with a shallow depth, which is composed of the main body and the front door by sheet metal processing. The main body further comprises a rectangular frame body having bent pieces formed on the front and rear surfaces, and a back plate which forms a shallow wiring room on the back side inside the main body. Further, on the front door side, each side of a substantially rectangular plate is bent and formed in two steps at right angles, and notches are formed at two positions above and below the bent piece folded back at the opening / closing fulcrum side.

The hinge mechanism comprises an inner hinge, an outer hinge and a hinge shaft, and each outer hinge is fixed to a position corresponding to the upper and lower cut portions of the front door. On the other hand, the inner hinge having the U-shaped arm is welded to the upper and lower sides of the inner wall on the main body side. After connecting the cylindrical bearing of the inner hinge and the plate bearing of the outer hinge, the hinge shafts are inserted into both bearings, and a small screw for retaining is screwed at the tip to connect the front door to the main body. The U-shaped arm of the inner hinge surrounds the bent piece on the frame body side and the bent piece on the front door side, and the front door hinges in the angular range corresponding to the size of the cut depth of the cut portion. It is designed to open and close by rotating around a shaft.

On the front side of the resin-molded unit panel,
The display window through which light is transmitted and the membrane sheet displaying the touch switch are bonded with an adhesive. A cover that is opened and closed is installed on the front surface of the lower portion of the membrane sheet. On the rear side, the locking piece and the protruding piece are effectively used, and the control board is mounted on the fixed column and positioned, and is attached with a minimum of screws.

Further, a window plate is fitted on the edging frame of the large window having escape holes at the four corners, and the LCD substrate is similarly fixed thereto by the fewest possible screws. The upper, left, and right sides of the LCD substrate fixed to the unit panel are surrounded by a hood and a light-shielding piece that block dust and light. Further, a speaker for alarm is also mounted inside the sound passage of the mounting portion provided at one corner via a filter and a ring. When the installation of the unit parts such as the speaker on the unit board is completed, the unit board is detachably attached to the front door by the large locking pieces and the like.

An insulating sheet is attached to the rear surface of the display operation unit mounted on the front door, and the control board and the LCD are attached.
The electronic components on the substrate are covered and sealed. When the printing unit is inserted into the mounting hole at the lower part of the front door from the front side to the back, the lock claw is restored and the printing unit is automatically locked and attached. The display operation unit on the front door is connected to the electronic components inside the main body with connectors, and the wiring is bundled with resin fasteners and bands and suspended along the inner wall surface of the front door by holding rings provided at several places. It is stretched and held.

On the other hand, on the front side of the back plate of the box body, a power supply board is attached together with a wiring duct, a power transformer and the like. The additional board that forms a switching circuit formed in a two-layer structure by projecting on the back surface of the power board is installed in the internal space of the board housing part that has a large number of vent holes that protrude using the dead space of the wiring room. Has been done. After the parts are assembled, the fire receiver is brought to an installation location such as a monitoring center and a box is installed in front of the wall. When the installation is completed, the front door is opened and the external wiring is drawn from the back into the box to be connected to the terminal block and the like, and the fire receiver is connected to the terminal equipment such as the fire detector and the gas leak detector.

When a fire is reported by the detection signal of the fire detector in the monitoring area, the CPU mounted on the control board of the display operation unit sends a control signal based on the setting data stored in the ROM in advance. Output. The display of a fire situation and the sounding of an alarm are executed, and at the same time, terminal devices such as smoke proof devices are controlled in conjunction with a predetermined program. The display of the fire situation at this time is such that the backlight illuminates the display element on the LCD substrate with illumination light, and the display information such as the time is clearly displayed in the display window of the operation panel. When the cover of the operation panel is opened and the touch switch for the printer is pressed, the printing unit is driven and the display information at this time is printed out. The path of the light emitted from the backlight is blocked by light-shielding pieces and ridges, etc. Even if it is constantly lit in the dark or at night, leakage light that goes to the outside from the gap between the box and the front door is blocked. To be done.

When the layout of the building is changed or the fire detector is added later, the setting data corresponding to the change is stored in the IC card. When the lock is unlocked and the front door is opened, the IC card storing the changed setting data is inserted into the IC card insertion portion provided on the unit panel and connected to the connector of the control board. Here, for example, when the power is turned on, the CPU of the fire receiver reads the setting data of the IC card, and the old setting data stored in the rewritable memory is rewritten and updated with the new setting data. Further, when it is necessary to remove the front door for repair or the like, if the small screws of the hinge mechanism are loosened and removed, the hinge shaft comes off and the front door is separated from the main body.

[0035]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an exploded perspective view showing the structure of the main part of a fire receiver according to an embodiment of the present invention, FIG. 2 is its front view, FIG. 3 is its rear view, and FIG. 4 is an enlarged front view of an operation panel. is there. 1 to 4, 1 is a fire receiver and 2 is a box. A metal plate such as a steel plate is used for the box body 2 and is formed in a rectangular box shape with a shallow depth.

The disassembled structure of the parts of the box 2 before assembly is
It is shown in FIG. Reference numeral 3 is a main body of the box body 2 and 4 is a front door. Reference numeral 5 is a frame body which surrounds the periphery of the main body 3 in a rectangular shape, 6 is a back plate, and 7a and 7b are upper and lower mounting rods having an L-shaped cross section.
Reference numerals 8 and 9 denote wiring openings and a plurality of mounting holes penetrating the rear plate 6, 10 is a square hole, and 11 is a substrate housing portion (FIG. 3). The upper, lower, left, and right sides of the frame body 5 in the width direction are bent to the inside at a right angle, and a constant strength is given by the right angle component of the formed bent piece 5a.

The rear plate 6 is attached to the main body 3 by the mounting rods 7a and 7b.
A wiring room R1 having a shallow depth is formed on the back side of the internal space of the main body 3 by being arranged vertically in the middle of the depth direction. The wiring for the power supply and the signal is once drawn out from the mounting wall surface to the wiring room R1 and then guided to the accommodation room R2 inside. The board housing portion 11 projects into the wiring room R1 so as not to hit the wall surface when the fire receiver 1 is installed on the wall surface or the like, and a large number of ventilation holes 11a are provided on the projecting surface.

On the other hand, as shown in FIG. 5, the front door 4 is formed by bending each side of a rectangular metal plate in two steps at right angles to form a thickness in the depth direction. By the two-stage bending process, the front door 4 which is mounted and opened with the unit parts is provided with a further load bearing function. In particular, the bent piece 4b folded back on the opening / closing fulcrum side of the front door 4 (the left side in FIGS. 1 and 4) is made wider than the other three sides and is given more strength. .

Reference numerals 12 and 13 denote two large and small mounting holes provided in the front plate 4a of the front door 4, and the lower side of the larger mounting hole 12 and the open ends of the left and right sides are bent inward.
Reference numeral 14 is a light-shielding wall composed of left and right bent portions, and its upper portion is formed in a flag shape with a slightly wide width. The width of the bent portion on the lower side and the narrow portion of the lower portion of the left and right light shielding walls 14 is set to a width with which the locking piece 46 of the unit board 21 described later can be locked. Reference numeral 15 is a notched portion which is slightly deeply cut above and below the folded piece 4b of the front door 4, and d is a notched depth of the notched portion 15. 16 is a hinge mechanism of the front door 4, 17
Is a plurality of retaining rings, and 18 is a lock.

The hinge mechanism 16 includes an inner hinge 16a, an outer hinge 16b, and a hinge shaft 16c each of which is formed by bending a plate material.
And a set screw 16d. As shown in FIG. 6, the inner hinge 16a is formed by bending a plate material slightly thicker than the outer hinge 16b, and has a U-shaped arm 16f provided with a cylindrical bearing 16e at its tip. The U-shaped arm 16f includes the bent piece 5a of the frame body 5 (main body 3) and the front door 4.
The inner hinge 1 is surrounded by the bent piece 4b (see also FIG. 9).
6a are fixed to the upper and lower sides of the inner wall on the main body 3 side. The outer hinge 16b is provided with two parallel plate-shaped bearings 16g with a cylindrical bearing 16e interposed therebetween, and is fixed to the positions of the upper and lower cutouts 15 of the front door 4.

A hinge shaft 16c is inserted from one side with the holes of the cylindrical bearing 16e and the plate-shaped bearing 16g on the same axis, and a screw 16d is screwed into the exposed end so as to be prevented from being pulled out. On the other hand, the wires guided from the main body 3 to the front door 4 are bundled by a fastener made of resin or the like, and the bundle of wires is held by a holding ring 17 provided at several places with a margin (shown in the figure). Absent). Therefore, the front door 4 can be opened and closed by rotating about the hinge shaft 16c as a fulcrum without hindering the wire bundle within an angular range substantially corresponding to the size of the cut depth d of the bent piece 4b. Has become.

Although the lock 18 is not shown in detail,
A lock shaft having a minus groove is loosely fitted in a cylindrical cylinder 18a protruding from the front door 4. Then, when the tip of an instrument such as a screwdriver is engaged with the minus groove in the cylinder and rotated, the inner holding plate 18b connected to the lock shaft is rotated by 90 degrees to open the front door 4. There is.
By adopting such a structure, the safety of the fire receiver as a public safety device is maintained.

Reference numeral 20 is a display operation unit. The display operation unit 20 is incorporated in the front door 4. Reference numeral 21 is a resin-molded unit board, and 22 and 23 are covers and membrane sheets. On the membrane sheet 23, a transparent or translucent display window and display characters and touch switches for up / down scrolling are displayed. Unit board 21
Controls the skeletal function of the display / operation unit 20, a cover 22 and a membrane sheet 23 are provided on the front surface to form an operation panel Pa, and a control board, LCD board, etc. described below are attached to the back surface side. ing. Also, cover 2
A socket of the handset, a touch switch of the printing unit, and the like are provided on the back side of the unit 2 to perform infrequent operations and special operations such as testing.

Reference numeral 24 is a control board mounted on the back side of the unit board 21, 25 is an IC card, and 26 is an LCD (Liquid).
d Crystal Display) substrate, 27 is a speaker that produces the main sound, and 28 is an insulating sheet of synthetic resin. Control board 24
In addition to a large number of electronic components corresponding to the display on the membrane sheet 23, a RAM and an E as a rewritable memory
A microcomputer consisting of an EPROM and a CPU is mounted, and I connected to the connector 24a at power-on.
An electric circuit for reading the setting data and the like stored in the C card 25 and writing the setting data in a rewritable memory that is mounted is provided.

The IC mounted on the IC card 25 is composed of, for example, a CPU for controlling writing and reading of information, a memory for driving this CPU and a memory for storing setting data for interlocking the terminal equipment. . Non-emissive LC
Backlight illumination light is projected on the display element of the D substrate 26, so that characters and symbols are clearly displayed even at night or in the dark. Further, the resin insulating sheet 28 is molded in conformity with the rear surface shape of the display operation unit 20, and covers the electronic components mounted on the control board 24 and the like to electrically and mechanically seal the electronic components. The insulating sheet 28 is preferably made of a black material if a dark color that suppresses light transmission is required.

The rear structure of the unit board 21 is shown in FIG. Reference numeral 31 denotes a flange of the unit board 21, which is continuously provided so as to project to the front side of each rectangular periphery of the unit board 21. Then, the mounting hole 1 is formed around the square of the unit board 21.
It is formed in a similar shape to a size smaller than 2, and the flange 31 covers a slight fitting gap with the mounting hole 12 from the front surface in the mounted state. 32 is a backside projecting part, 33
Reference numeral 34 denotes an insertion portion of the IC card 25 which is continuously provided to the storage portion 32, and 34 denotes a flange 31 outside the storage portion 32 and the insertion portion 33.
3 are projection-like pieces (see FIG. 1) serving as a locking mechanism of the display operation unit 20 formed so as to project along.

The ridge 32 has a width and a depth enough to cover the control board 24 and the LCD board 26 attached to the rear surface side, and is provided on the upper edge of the unit board 21.
Also, it is used as a light-shielding wall for the backlight while preventing the accumulation and intrusion of dust such as the LCD substrate 26. Also,
L-shaped frames 33a are provided on both sides of the insertion portion 33 so as to surround the IC card 25 and hold it inside so as not to be damaged even if an external force is applied to the IC card 25. Also, the insertion part 3
3 is formed with an inclined surface 35 having a wider entrance side,
The IC card 25 is smoothly inserted along the inclined surface 35. When the control board 24 is attached to the unit board 21, the insertion portion 33 is located at a position where the connector 24a of the control board 24 faces the IC card insertion portion 33.
1 is integrally molded.

Reference numeral 36 denotes a mounting portion for the speaker 27, which is provided at the lower left corner of the unit board 21. A plurality of parallel sound passages 37 are provided in the mounting portion 36, and a filter 38 and a ring 39 are provided in an annular portion surrounding the sound passage 37 to mount the speaker 2.
7 is attached. An elastic material is suitable for the material of the ring 39,
The loosening of the fixing and the "acoustic cracking" of the generated sound due to vibration are prevented. The ring 39 is formed to have substantially the same diameter as the annular portion around the sound passage groove 37, and the filter 38 is detachably attached to the attachment portion 36 by pressure contact with the attachment.

Reference numeral 41 denotes a large window hole having an edging frame, and 42
Are two medium-sized window holes, and 43 is a large number of small-sized window holes protruding in a rectangular tube shape and arranged in a discrete or row form. The LCD substrate 26 is provided in the large window hole 41 through the window plate 45 and is used for displaying characters such as menus. Further, the two middle-sized window holes 42 face the LEDs mounted on the control board 24, and display the district number or the like with a three-digit seven-segment numerical value in the display frame of the membrane sheet 23. Furthermore, a large number of small window holes 43 face a single LED and are used for color display of operating states such as red and green.

In particular, at the four corners of the edging frame of the large window hole 41, escape holes 44 are formed by cutting the right-angled corners into a circle at the same depth in the figure. Then, by the escape hole 44,
A transparent or translucent window plate 45 is tightly fitted inside the large window hole 41 without a gap. 46
4 are large beak-shaped locking pieces as a locking mechanism for the display operation unit 20 projecting from the side of the flange 31 near the lower part, and 47 is a small lock provided on the side or inside. Stop, 4
8 and 49 are chair-shaped and plate-shaped protruding pieces, 50 is a block stand,
Reference numeral 51 is a circular protruding cylinder, 52 is a fixed pillar, and 53 is a fixed pillar to which ear pieces are attached. A nut is inserted into the fixed columns 52 and 53, and a fixing screw is screwed therein. And
The locking piece 47 and the fixed columns 52 and 53 allow the control board 24 and the LC to be connected.
A locking mechanism for the D board 26 is configured.

The large locking piece 46 and the protruding piece 34 allow the display operation unit 20 to be detachably mounted in the mounting hole 12 of the front door 4. Further, the protruding pieces 48 and 49 are formed on the control board 2.
4 and the side surface or bottom surface of the LCD board 26 to perform a horizontal or vertical positioning function at the time of mounting, and the chair-shaped projecting piece 48 has the control board 24 placed on both sides of its step. Positioning in both directions is performed, and the fixing column 53 serves both to position the ear piece and to fix it with a screw. The small locking piece 47 locks both substrates 24 and 26. Thus, the locking piece 47 or the like makes the screws for fixing the control board 24 or the like absolutely or omitted to the minimum. A disk-shaped movable piece is housed in the protruding cylinder 51 in a free state, and the touch displacement of the membrane sheet 23 is transmitted to the switch elements on the control board 24 and the LCD board 26. Reference numeral 54 is a mounting piece for fixing the insulating sheet 28, and 55 is a mounting base for a socket for inserting a plug of a handset.

A printing unit 60 is provided below the front door 4. Reference numeral 61 is a synthetic resin case, and 62 is a flange similar to that of the unit board 21, which covers a slight fitting gap with the mounting hole 13 when the case 61 is mounted (hereinafter, FIG. 8). Reference numeral 63 is an opening / closing lid, and 64 is an opening / closing shaft. Reference numeral 65 is a feeding port of a chart provided with a cutter, and 66 is a feeder button (FIG. 2). When the upper and lower ends of the opening / closing lid 63 are pushed, the opening / closing lid 63 is opened around the opening / closing shaft 64 as a fulcrum as shown in FIG. A heat-sensitive printing mechanism is built in the case 61, for example, and the display data on the LCD substrate 26 is printed and recorded on a roll-type heat-sensitive paper.

67 is formed on both side surfaces of the case 61.
One C-shaped groove, 68 is a lock claw surrounded by the U-shaped groove 67 as a locking mechanism of the printing unit 60, 69 is a movable end elastically displaced in the U-shaped groove 67, and 71 is a connecting portion. The cross section of the lock claw 68 is formed in a triangular shape having a gentle inclined surface on the side of the connecting portion 71, and in a normal state, it slightly projects from the side surface of the case 61. The gap between the movable end 69 of the lock claw 68 and the flange 62 corresponds to the plate thickness of the front door 4. When the opening / closing cover 63 side of the printing unit 60 is held in the hand and inserted into the mounting hole 13 from the front surface of the front door 4, the lock claw 68 is once pushed inward. Then, when the case 61 is inserted all the way, the lock claw 68 is restored to the normal state by the elastic force, and the front door 4 in the vicinity is restored.
Is clamped in the gap and the printing unit 60 is automatically locked and mounted.

Reference numeral 73 in FIG. 1 is a handset which is hung from the back plate 6 by a holder, 74 is a triangle type wiring duct whose left and right sides are open to a double door, and 75 is a power supply board. On the power supply board 75, a terminal block in which screw terminals are arranged stepwise, a fuse, and the like are attached. Further, as shown in FIG. 3, an additional board 75a, which is a printed board having a narrow mounting surface, is attached to the opposite surface of the power supply board 75 in a two-layer structure. A circuit that easily generates heat, for example, a constant voltage circuit is incorporated in the extension board 75a and faces the board housing portion 11 provided on the back plate 6 described above. Reference numeral 76 is a power transformer, and 77 is a two-divided insulating plate that closes the opening 8 and forms two round insertion holes. Θ in FIG. 9 is the rotation angle of the front door 4.

An example of the assembling of the box and the assembling of the parts of the fire receiver of the embodiment of the present invention having the above-mentioned structure will be described.
It is as follows. For example, by punching holes and contours such as the mounting holes 12 and 13 from a large steel plate by press working,
An original plate in which the front door 4 is flatly developed is manufactured. At this time, the bending piece 4b on the fulcrum side of the opening / closing operation is made wider than the other side, and the cutting depth d is selected to be a predetermined width. 4 sides of the stamped original plate 2
Bend at a right angle to the stage, and the left and right sides and lower side of the mounting hole 12 are L
Bend into a letter shape. Similarly, the frame 5, the back plate 6 and the upper and lower attachment rods 7a and 7b are punched out, and then bent. However, the frame body 5 is welded for frame molding.

Next, the inner hinge 16a and the outer hinge 16b, which are preliminarily machined as shown in FIG. 6, are welded to the inner surface of the frame 5 and the front door 4. Further, the mounting rods 7a and 7b are welded to the upper and lower inner surfaces of the frame body 5, and the square hole 10 of the rear plate 6 is fixedly molded by projecting the substrate housing portion 11 toward the wiring chamber R1 side. After that, after installing the lock 18 in the mounting hole,
The front door 4 is openably and closably connected to the main body 3 by connecting the two pairs of the inner hinge 16a and the outer hinge 16b and inserting the hinge shaft 16c.

A set screw 16d is attached to the tip of the hinge shaft 16c.
Screw it in to prevent it from coming off. Since it is retained by a small screw, the front door 4 can be easily removed and can be used repeatedly unlike the E-ring. The back plate 6 is fixed to the mounting rods 7a and 7b of the main body 3 with screws, and a wiring room R1 having a shallow depth is formed on the back side of the fixed back plate 6 and the box 2 is assembled. Handset 7 is attached to the back plate 6 of the completed box 2.
A power supply board 75 is attached together with a holder for 3, a wiring duct 74, a power supply transformer 76, an insulating plate 77, and the like. The additional board 75a protruding from the back surface of the power board 75 is provided in the internal space of the board housing 11 having a large number of ventilation holes 11a. The wiring room R1 requires a certain depth in order to wire the signal line and the power supply line, but these wirings do not occupy the entire wiring room R1 and a dead space occurs. Therefore, in this embodiment, the dead space of the wiring room R1 can be used to accommodate a part of the substrate or the like inside the receiver, and the inside of the receiver can be cleaned,
The box can be made thinner. Further, the heat generated by the additional board 75a is effectively diffused from the ventilation hole 11a. Moreover, the heat-generating component can be stored separately from the other components in the board storage portion, and the influence of heat generation on other circuit components can be prevented.

On the other hand, the unit board 21 made of resin is integrally formed with the window hole 41 and the like on the front surface and the locking piece 47, the mounting portion 36 and the like on the back surface as described above. A membrane sheet 23 is attached to the front side of the unit board 21 that is integrally molded. A cover 22 that is opened and closed is installed in a section below the membrane sheet 23 to be blindfolded. On the other hand, on the back side, the locking pieces 47 and the projecting pieces 49 that are elastically displaced are effectively used to tighten the fixing screws as few as possible while the control board 24 is positioned by the fixing columns 52. Mounted.

Similarly, a window plate 45 is fitted in the edging frame of the large-sized window hole 41 having escape holes 44 at the four corners, and the LCD board 26 is provided on the left side of the window plate 45. Piece 4
It is fixed by only two screws which are held by 7 and are screwed into a fixed column 53 provided with ear pieces. Further, the filter 38, which is inserted into the inner surface of the annular hole of the attachment portion 36 at the lower corner on the back side without adhesive, is attached by pressure contact via the ring 39 by the alarm speaker 27 attached from above. After the unit parts such as the speaker 27 are attached to the unit board 21, the unit board 21 is detachably attached to the front door 4 of the fire receiver 1 from the front surface by the large-sized locking piece 46 and the protruding piece 34. It This mounting operation will be described in detail below.

The display operation unit 20 is held and the front door 4
Insert it into the mounting hole 12 while slightly tilting the upper part from the front of the unit, and then push it up to lift the flange 3 at the upper edge of the unit board 21.
The open ends of the mounting holes 12 are fitted between the one and the three protruding pieces 34. With the upper part still fitted, the lower part of the display operation unit 20 is pressed against the front door 4. At this time, the four locking pieces 46 are pressed against the open ends of the mounting holes 12 and elastically displaced in the direction of the inside of the unit board 21. Then, when the lower flange 31 is fitted to the surface of the front door 4, each locking piece 46 becomes free and stands upright, and the beak-shaped tip is locked to a portion where the snapping and the opening end are bent. . In this way, the display operation unit 20 is mounted in the mounting hole 12 without screws.

If the reverse operation is performed while pressing each locking piece 46 in the mounted state, the display operation unit 20 mounted on the front door 4 can be easily removed. On the other hand, when the printing unit 60 is inserted from the front into the mounting hole 13 at the bottom of the front door 4 and is inserted all the way in, the locking claw 68
Is restored and the printing unit 60 is automatically locked and installed without screws. By pressing the lock claw 68 and pulling it forward, the printing unit 60 can be removed from the mounting hole 13.

After that, the fire receiver 1 incorporating all the parts is brought into the building, and the installation work and the wiring work are carried out. The wiring from the fire detectors and terminal equipment installed on the upper floors etc. is introduced into the installation room through the duct. Also, a fixing bolt is embedded in the concrete wall surface of the installation site. On the other hand, a large number of wires introduced into the installation room through the ducts are drawn into the box 2 from the insulating plate 77 on the back surface of the fire receiver 1, and internal connections such as a terminal block are made by the internal wiring work.

At the time of construction, even if the provisional display unit 20 is attached to the front door 4, dust such as dust generated by the installation work can be removed by the roof 32 provided on the upper side and the insulating sheet 28 on the rear side. Adhesion and intrusion to the display operation unit 20 are restricted. In addition, the mounting hole 12 and the unit board 21
Since there is no gap between the electronic parts and the electronic parts, dust that is normally floating in the indoor space is less likely to adhere to the electronic parts.

After the display operation unit 20 and the printing unit 60 mounted on the front door 4 are connected to the electronic components in the main body 3 by the internal wiring work, the insulating sheet 28 is attached to the attachment piece 54 by pins or the like. The rear side of the unit parts is sealed. The wires guided into the front door 4 are tightly bound with resin fasteners and are held by the retaining rings 17 provided at several positions on the inner surface of the front door 4 as described above, which hinders the opening / closing operation of the front door 4. Absent. In this way, the fire receiver 1 is installed along the wall surface of the disaster prevention center,
A disaster prevention system is constructed by connecting to a terminal device such as a fire detector, a repeater, or a gas leak detector by a line.

When a fire is signaled by the detection signal of the fire detector in the monitoring area, the CPU mounted on the control board 24 of the display operation unit 20 stores the setting data stored in advance in the rewritable ROM. The control signal is output based on the. At the same time, the display of the fire status on the operation panel Pa of the display operation unit 20 and the sounding of the alarm device by the speaker 27 are executed, and the terminal device such as the smoke proof / smoke control device is controlled by a predetermined program in association with the fire. Countermeasures against gas leaks have been implemented.

On the other hand, the backlight on the LCD substrate 26 is always or when necessary supplied with a current for illumination to illuminate the display element with illumination light so that display information such as time is displayed in the display window of the operation panel Pa. It is displayed. At this time, due to the reflected light applied to the display element, the scattered light of the backlight, and the like, weak leak light is applied to the vicinity of the LCD substrate 26 on which the electronic component is mounted.

However, the light shielding walls 14 formed by bending a part of the front door 4 are provided on the left and right of the display operation unit 20 mounted in the mounting hole 12. Also, LC
Above the D board 26, a ridge 32 extending horizontally in the upper part of the unit board 21 extends to the back side. further,
The back surface of the display operation unit 20 has a dark insulating sheet 28.
Is covered with. For this reason, the light path of the light leaked by the above-described backlight is blocked, and the leaked light traveling to the outside from the gap between the main body 3 and the front door 4 or the like is blocked.

When inspecting the inside of the fire receiver 1 for maintenance and inspection, the front door 4 is opened by inserting a screwdriver or the like into the minus groove of the lock 18. When the lock is unlocked and the free end of the front door 4 is pulled to the front, the front door 4 is released as shown in FIG.
Hinge shaft 16 through the process shown in (a) to (d) of
It is opened by rotating c as a fulcrum. Notch 15 of front door 4
According to the embodiment configuration in which the depth is increased, the width of the bent piece 4b is widened and the rotation angle θ of the front door 4 is enlarged while maintaining a constant strength, so that the inspection work is facilitated. In the case of a test or an emergency, if the handset 73 hanging on the holder in the accommodation room R2 is removed, the cover 22 of the operation panel is opened and the plug is inserted into the insertion socket 55, information can be exchanged through conversation with the terminal device. it can. In addition, when the bent piece 4b is cut, if the cut is made to the end, the cut can be seen from the side of the box body 2, so the cut depth d of the cut portion 15 is such that the cut cannot be seen. It is aesthetically preferable to set.

At a later date, when the user requests to change the layout of the building or add an option of a fire alarm facility, the IC card 25 stores the setting data to be updated. The IC card 25 storing the changed setting data is inserted into the insertion portion 33 of the IC card 25 provided on the unit board 21 of the display operation unit 20 and connected to the connector 24a of the control board 24. When the power is turned on, the CPU reads the changed setting data of the IC card 25, rewrites the old setting data stored in the rewritable ROM with the new setting data, and updates the new setting data.

In the above embodiment, the case where the IC card is inserted into the insertion portion of the unit board by opening the front door is illustrated, but the IC card may be set directly from the outside of the box (embodiment). 2). In this case, the box is provided with an opening and the IC card insertion section is provided inside the opening. Moreover, although the case where the setting data is updated in accordance with the change of the fire monitoring system and the addition of the option has been described, the case where the accumulation time of the fire detector is changed may be used. Also, IC
A CPU or the like mounted on the IC card itself may be used to read and rewrite the update data of the card.

Further, although the case where the ridge portion is formed on the upper part of the unit panel has been described, the attachment hole of the front door may be bent upward to form the ridge portion, but it is made of resin for the sake of material and ease of manufacture. It is desirable to integrally mold with the unit board of. Also,
Although the roof portion is provided on the upper portion of the unit panel, it may be extended to both side surfaces to form a U-shaped dustproof member. If the U-shaped dustproof member is combined with an insulating sheet, the unit parts of the display operation unit are almost completely enclosed, so that the dustproof function can be further enhanced.

Further, the case where the display operation unit is detachably mounted in the mounting hole of the front door by the four large locking pieces formed on the unit panel and the three protruding pieces parallel to the flanges will be described. However, the protruding pieces may be omitted and all of them may be replaced with the locking pieces, and the number of these may be appropriately increased or decreased. Further, two lock claws of the printing unit are provided on each of the left and right side surfaces, but the position and number of the lock claws are not necessarily limited to the embodiment. Further, although the description has been made in the case where nine sound-passage grooves having a circular contour are formed in the mounting portion of the speaker, a large number of small holes or elliptical holes can be used without any problem. Good.

The description has been given of the case where the light-shielding wall, the side wall and the insulating sheet prevent the leaked light from the box to the upper side, both side surfaces and the back surface.
One may be omitted depending on the case and installation conditions. Further, as long as the display device uses illumination light, it is not necessarily limited to the liquid crystal display device as in the embodiment.

Although the description has been given of the case where the notch of the bent piece of the front door is deepened to increase the opening / closing angle, the contact between the notch and the U-shaped arm is used as the stopper of the front door. May be. Further, the configuration in which the additional board of the printed board for the constant voltage circuit is provided in the board housing portion has been illustrated, but the electronic board which is easily affected by heat is not limited to the printed circuit board. Further, the wire bundle of the front door is held by the substantially convex holding ring, but the holding hole or the like is sufficient, and the place and shape of the embodiment are not necessarily limited. Further, both the unit board printing units are locked in the mounting holes inserted from the front of the front door by the respective locking mechanisms. For this reason, the locking mechanism can be released only from the back side of the front door, so that the unit panel or the like cannot be pulled out without permission.

[0075]

[0076]

[0077]

[0078]

[0079]

The present invention is constructed as described above. As a result, according to the present invention, the following merits associated with the respective configurations are expected. When a new option is added after the product is shipped, such as a conventional fire receiver, or a fire detector is added, the connector of the ROM rewrite device provided separately should be connected to rewrite new setting data. There is no need. For this reason, each time the ROM is rewritten, it is only necessary to carry a small card.
Can be rewritten.

Therefore, the rewriting operation of the ROM is extremely easy, and the setting data can be updated even for the maintenance personnel who do not have a special technique, and the problems from the past can be alleviated. In addition, since the IC card insertion portion is provided on the unit board as in the first embodiment, the structure is further strengthened as compared with the conventional structure in which the IC card insertion portion is inserted into the notch portion of the printed circuit board, and there is little fear of damage due to external force. In addition, since the insertion portion can be integrally molded with the resin unit board, it can be made compact without increasing the number of parts. In particular, if the insertion portion is formed with a sloped surface that widens on the inlet side, there is also an advantage that the IC card can be connected to the connector smoothly and reliably.

[0081]

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[0088]

[0089]

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an internal configuration of a fire receiver according to an embodiment of the present invention.

FIG. 2 is a front view of the fire receiver according to the embodiment of the present invention.

FIG. 3 is a rear view of the fire receiver according to the embodiment of the present invention.

FIG. 4 is an enlarged front view of the operation panel according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view showing the configuration of the box of the embodiment of the present invention.

FIG. 6 is an exploded perspective view of a hinge mechanism according to the embodiment of the present invention.

FIG. 7 is a perspective view of the rear surface side of the unit board of the embodiment of the present invention.

FIG. 8 is a rear perspective view of the printing unit according to the embodiment of the present invention.

FIG. 9 is an explanatory view showing the opening / closing operation of the front door of the embodiment of the present invention.

FIG. 10 is a perspective view showing a state in which a door of a conventional fire receiver is opened.

11 is an exploded perspective view showing the structure of part of the door of FIG.

12 is a cross-sectional view showing a state where an operation plate and the like are attached to the door of FIG.

13 is a diagram illustrating the configuration of part of the printed circuit board in FIG.

FIG. 14 is a sectional view of a conventional fire alarm receiver.

FIG. 15 is an exploded perspective view of a main part of a conventional support structure for an opening / closing section.

[Explanation of symbols]

1 fire receiver 2 box 3 body 4 front door 4b bent piece 5 frame 5a bent piece 6 Back plate 10 Square hole 11 Board storage 11a vent 12 mounting holes 13 mounting holes 14 Shading wall 15 notch 16 Hinge mechanism 16c hinge shaft 16d set screw 16f U-shaped arm 17 Holding ring 18 locks 20 Display operation unit 21 unit board 22 cover 23 Membrane sheet 24 control board 25 IC card 26 LCD substrate 27 speakers 28 Insulation sheet 31 flange 32 Kitabe 33 Insert 34 protrusions 35 inclined surface 36 Mounting part 37 sound passage 38 filters 39 ring 41 Large window 44 escape hole 45 window board 46 Large locking piece 47 Small locking pieces 52 Fixed column 53 fixed pillar 54 mounting piece 60 printing unit 61 cases 62 flange 68 Lock claw 74 wiring duct 75 Power board 75a extension board R1 wiring room Pa Operation panel d Depth of cut θ rotation angle

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G08B 17/00 G06K 17/00 H02B 1/00-7/08

Claims (7)

(57) [Claims] 1. A card having a memory in which setting data is stored, a connector provided on a control board and connected to the card, and a rewrite mounted on the control board and storing the setting data of the card. Possible memory, a display operation unit having a unit board made of resin to which the control board is attached, and an insertion portion provided on the unit board and for inserting the card into a connector on the control board. And a fire receiver. 2. A box body having a mounting hole on a front surface side, a resin body mounted on the mounting hole of the box body, an operation panel is formed on the front surface, and unit parts including a control board are mounted on the rear surface side. In a fire receiver equipped with a display operation unit having a unit board of, a card having a memory in which setting data is stored, a connector provided on the control board, connected to the card, and the control board. A fire receivable characterized by comprising a rewritable memory that is mounted and stores setting data of the card, and an insertion portion that is provided in the unit panel and that inserts the card into a connector on the control board. Machine. 3. The fire receiver according to claim 1, wherein a holding member that surrounds the card from both sides is provided in the insertion portion. 4. The fire receiver according to any one of claims 1 to 3, wherein the insertion portion is provided with an inclined surface that widens on the entrance side. 5. An upper part of the unit panel is integrally molded with an overhanging part that covers above the unit component of the display operation unit, and the inserting part is provided continuously to the overhanging part. The fire receiver according to claim 2. 6. The fire receiver according to claim 2, wherein the unit panel is provided with a locking mechanism for removably mounting the display operation unit in a mounting hole of a front door from the front side. 7. The insertion section is integrally molded with the unit board at a position where the connector faces the insertion section when the control board is attached to the unit board. Fire receiver as described.