JP3913922B2 - Line unit for disaster prevention monitoring control panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a line unit of a disaster prevention control panel that is installed in a panel for line connection used for monitoring abnormalities such as fire and gas leakage and controlling equipment.
[0002]
[Prior art]
Conventionally, in a disaster prevention control panel that monitors and controls a fire in units of lines known as P type, such as a sensor line for connecting a fire detector, a control line for connecting a device such as a district acoustic device, etc. A line unit for connecting an external line and an extension line connected to an operation unit, a display unit or the like in the panel is attached in the panel, and the structure of this line unit includes, for example, those shown in FIGS. No. 64-2237).
[0003]
In FIG. 21, the line unit is provided with a pair of terminal boards 110 at opposite ends of the printed circuit board 150, and the legs 120a of the terminal fitting 120 are lowered onto the printed circuit board 150 and soldered directly as shown in FIG. Electrical connection.
[0004]
Several units of this line unit are attached to the inside of the board, and in this state, the external line 160 is connected to the terminal portion of the terminal board 110 and the internal line 170 is connected to the printed circuit board 150 by a connector.
[0005]
23 and 24 are examples of other line units (Japanese Examined Patent Publication No. 64-2238). Two terminal boards 210 each consisting of a terminal part 211 and a base part 216 are provided as a pair and a plurality of prints are provided therebetween. The substrates 220a and 220b are attached to be overlapped at a predetermined interval. The terminal portion 211 is provided with a terminal printed board 214.
[0006]
As shown in FIG. 24, the leg portions of the terminal fitting 213 from the terminal portion 211 are soldered to the printed board 214 between the terminal portion 211 and the terminal printed board 214. A connector cable 221 is used for connector connection between the terminal printed board 214 and the printed board 220a. The printed circuit boards 220a and 220b are connected by a connector cable 230.
[0007]
[Problems to be solved by the invention]
However, such a conventional line unit has the following problems. First, in the line unit shown in FIGS. 21 and 22, since a plurality of terminal fittings 120 must be inserted into the printed circuit board 150 and connected by soldering, the production and assembly work of the line unit becomes complicated. Further, since the soldering is performed at a position where the printed circuit board 150 enters the inside of the terminal board 110, it is difficult to automate, which causes an increase in cost.
[0008]
In the line unit shown in FIGS. 23 and 24, the terminal fitting 211 is connected to the terminal printed board 214 by soldering to make a semi-finished product. It is necessary to connect the printed circuit board 220a and the connector to the printed circuit board 220a by fixing to 216, and then connect the printed circuit board 220a and 220b to the connector. This is also structurally difficult, and is also a factor in increasing costs.
[0009]
Further, in any line unit, since the structure is such that both ends of the printed circuit board are held down by the terminal boards 110 and 210, stress is applied to the printed circuit board as a load when the line unit is installed in the board. The deformation of the printed circuit board easily causes damage such as soldering and peeling.
[0010]
Furthermore, it is not possible to add a printed circuit board later with the addition of facilities with the line unit mounted in the panel.
[0011]
The present invention does not apply a load to the circuit board at the time of mounting, can easily add or remove the circuit board, can easily automate component mounting and soldering on the circuit board side, and circuit boards of different sizes. It aims at providing the line unit of the disaster prevention monitoring control panel which can be stored if necessary.
[0012]
[Means for Solving the Problems]
In order to achieve this object, the present invention is configured as follows.
[0013]
The present invention is a line unit of a disaster prevention control panel that is attached to the inside of the panel and to which signal lines from inside and outside are connected, and includes the following unit main body. That is, the unit main body is a base part placed at the mounting position inside the panel, a frame wall that opens at least upward and forward with respect to the base part, and includes a side frame wall and a rear frame wall, and both side frame walls A cover support part formed in a gate shape above and a board support part that is formed inside the side frame wall and supports the peripheral edge of the printed board.
[0014]
The present invention is a terminal unit for connecting an external signal line at the board support part of each unit body, with the unit body having such a structure as a pair, with the front frame wall opening facing each other. The printed circuit board on which is mounted is supported substantially in parallel with the base part and accommodated in the unit. Here, a pair of two unit bodies is called a full type.
[0015]
Thus, in the line unit of the present invention, the unit main body is completely independent from the circuit board, and is configured only as a housing that cannot be electrically connected at all, thereby the electric connection between the unit main body and the circuit board. This eliminates the need for soldering and connector connection, and since all electrical components are mounted on the circuit board, automation is facilitated, and the assembly work of the circuit unit can be simplified and controlled.
[0016]
In addition, since the line unit is formed as a single box frame with the two unit main bodies abutting each other, no stress is applied to the circuit board housed in the main unit when the line unit is attached. Further, it is possible to reliably prevent breakage due to the stress load applied to the circuit board.
[0017]
In addition, since the two unit bodies are in contact with each other, they are greatly opened forward and backward and upward as viewed from the base, so that the circuit board can be attached to and detached from the unit even after the circuit unit is installed in the panel. Easy to do.
[0018]
Here, the board support portion of the unit body includes a multi-stage support structure capable of storing a plurality of circuit boards, for example, a two-stage support structure. That is, a two-stage board insertion portion is formed in a step shape near the rear frame wall inside the side frame wall, and a two-stage substrate receiving portion is formed near the front opening side inside the side frame wall. In the full type state where two unit main bodies are combined as a pair, the full size printed circuit board determined by the storage interval of the two unit main bodies is stored in the lower stage, and the half size corresponding to each unit main body is stored in the upper stage. Each printed circuit board is accommodated.
[0019]
For this reason, in a full-type line unit, the full-size circuit board housed in the lower stage inside the unit is supported by insertion into the board insertion portion at a position close to the four corners of the side surface. The half-size circuit board located in the upper stage is supported at four points in each unit. Unlike the full circuit board in the lower stage, the half-size circuit board accommodated in the upper stage can be attached and detached with the line unit mounted and fixed inside the panel, and thus can be used as an additional circuit board.
[0020]
When a plurality of printed circuit boards are stored in a state where two unit bodies are combined as a pair to form a full type, the terminal portions mounted on each printed circuit board are arranged in a downward staircase pattern toward the outside. As described above, the terminal portions mounted on the circuit board are arranged stepwise, so that the signal lines can be easily attached to and detached from the terminal portions.
[0021]
The board receiving part located in the upper stage position near the front opening provided on the board support part of the unit main body forms a notch step part on the upper part, and opens a pin hole with the step part as the center position. A half hole corresponding to the pin hole is formed at the end of the half-size printed circuit board that fits into the part, and the lock pin is inserted with the half hole of the printed circuit board aligned with the stepped pin hole of the notched step And support. By such a circuit board support structure using a lock pin and a stepped pin hole, the unit main body can be easily removed or attached by removing the lock pin.
[0022]
Engagement pieces that engage with the upper surface and the lower surface of the distal end of the counterpart base portion alternately extend at the abutting portion of the distal end of the base portion of the unit main body. As a result, the two unit bodies can be easily combined and a relatively robust combined state is obtained when they are combined, and even if one side of the unit body is held, it will not be disassembled.
[0023]
A gap used for disconnecting the fitting state is formed in a corner portion from the base portion of the butted portion of the unit main body to the frame wall. If you want to disassemble two unit bodies that are in an assembled state, you can easily disassemble them by inserting a hundred yen coin into this gap.
[0024]
The line unit of the present invention can be used by storing and supporting one or a plurality of printed circuit boards with a single unit body, and this is called a half-type line unit. The half-type unit body is a board receiving part that is placed at a lower position near the front opening side, with the support piece standing on the base part supporting the lower side of the printed circuit board, in the pin hole of the base part A support pin is inserted to support the open side of the half-size printed circuit board. Thereby, even if it is a half type, a circuit board can be supported and accommodated in each of the upper stage and the lower stage at four points.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an explanatory diagram viewed from the front of a disaster prevention monitoring control panel in which the line unit of the present invention is used. In FIG. 1, a disaster prevention monitoring control panel 1 is composed of a panel main body and a door 1a shown openably opened on the front of the panel main body. The door 1a is provided with a district display panel 1b and an operation display panel 1c. On the right side of the display panel 1c, there is provided a child door 1d that can be opened and closed laterally with the right side as an axis, and an operation display section for maintenance and inspection is provided on the inner side of the child door 1d.
[0026]
FIG. 2 is a block diagram of the disaster prevention monitoring control panel of FIG. In FIG. 2, the disaster prevention monitoring control panel 1 is provided with a main CPU 2, and the function as the reception control unit 2a is realized by the program control. Line units 3a and 3b are provided for the main CPU 2. From the line unit 3a, a fire alarm sensor line 4a is drawn out and connected to a fire sensor. Further, a control line 5a is drawn out from the line unit 3a, and the district audio apparatus 7 is connected.
[0027]
From the line unit 3b, a smoke detector line 4b is drawn out and connected to a fire detector 6b for smoke prevention. Further, a control line 5b is drawn out from the line unit 3b, and a smoke prevention device 8 is connected thereto. A plurality of line units 3a and 3b are provided, and the maximum number of lines that can be drawn to the outside is, for example, 500 lines. A maximum of 500 control lines can be drawn out from the maximum 500 sensor lines. For example, one line unit can draw out a sensor line and a control line in units of 10 lines.
[0028]
For the main CPU 2, an operation unit 10, a display unit 11, a main audio device 12, district display units 13 a and 13 b, and a transfer output unit 15 are further provided. The district display units 13a and 13b correspond to the line units 3a and 3b, and as shown in FIG. 1, the line display is performed on the district display panel 1b in units of 10 lines per panel. In addition, since the district display panel 1b of FIG. 1 is provided with 13 panels in units of 10 lines, the district display of 130 lines can be displayed. Will be displayed.
[0029]
An SRAM 16 that operates as a work memory is connected to the main CPU 2 via a CPU bus 17. A connector 18 is provided on the CPU bus, and a memory pack (ROM pack) 20 incorporating a flash memory as a nonvolatile memory is connected to the connector 18.
[0030]
In the flash memory 19 of the memory pack 20, the basic data such as the number of lines and line types necessary for the monitoring control of the disaster prevention monitoring control panel 1, and the district sound device 7 and the smoke prevention device 8 are controlled in conjunction with the sensor line. The interlocking data for this is registered in advance, and is expanded from the flash memory 19 to the SRAM 16 when the power is turned on, and used for monitoring control by the reception control unit 2a of the main CPU 2.
[0031]
Here, each of the line units 3a and 3b, the district display units 13a and 13b, and the transfer output unit 15 provided in the disaster prevention monitoring control panel 1 is provided with a CPU (local CPU) having a one-chip configuration, and the main CPU 2 Data is exchanged via serial communication.
[0032]
The reception control unit 2a realized by the program control of the main CPU 2 monitors the line alarm data sent from the local CPU of the line units 3a and 3b by serial communication, and displays a display unit when an abnormality such as a fire is determined. 11, the fire alarm display is performed, the main sound device 12 issues a representative fire alarm, and the district display units 13a and 13b display the district of the notification line. Instruct the transfer output to output the transfer signal to the external device.
[0033]
Further, for example, when the reception control unit 2a determines that the fire alarm sensor line 4a is issued, the reception control unit 2a sets the alarm line as the link source based on the link data developed from the flash memory to the SRAM 16, and responds to this. The linked control line is determined, and for example, the district audio device 7 connected to the control line 5a is activated.
[0034]
FIG. 3 is an explanatory view of the installation of the line unit according to the present invention inside the panel main body with the door 1a of the disaster prevention monitoring control panel of FIG. 1 opened. In FIG. 3, the line units 24 according to the present invention are attached to the inside of the panel main body 22 of the disaster prevention monitoring control panel 1 in the vertical direction, for example, in a predetermined number of rows in three horizontal rows.
[0035]
As shown in FIG. 2, signal lines (outside lines) from outside the sensor lines 4a and 4b and the control lines 5a and 5b are connected to the line unit 24 attached to the panel body 22 in this way. Signal line (extension) connection for serial communication with the main CPU 2 provided inside is performed. In FIG. 3, connection of signal lines to the line unit 24 is omitted.
[0036]
FIG. 4 is an explanatory diagram of attachment of a dustproof cover to the line unit 24 attached in the panel 22 of FIG. In FIG. 4, if the line unit 24 mounted in the panel 22 is left as it is, dust and the like will adhere to the unit, so that the end cover 26, the unit cover 28, and the inter-unit cover 30 are removed as shown on the right side. These three types of dustproof covers are used to attach a cover as shown in the vertical row of the right line unit 24 to prevent dust from being attached.
[0037]
That is, the end cover 26 is attached to the end of the line unit 24 positioned at the top and bottom by the engagement piece 26a. The unit cover 28 is attached to the center of each line unit 24 by an engagement piece 28a. The inter-unit cover 30 is mounted between the line units 24 that are vertically adjacent by the engaging piece 30a.
[0038]
Therefore, when the apparatus is in a completed state, the line unit 24 in the panel 22 is in a state where the front surface is covered with three types of covers: an end cover 26, a unit cover 28, and an inter-unit cover 30. Details of attachment of each cover to the line unit 24 will be described later.
[0039]
5, FIG. 6 and FIG. 7 show the internal structure in the side direction from which one of the line units 24 of the present invention is taken out. 5, 6, and 7, the line unit 24 of the present invention is configured by abutting and combining two unit bodies 32 as a pair. In this way, the line unit 24 in which the two unit main bodies 32 are combined as a pair is called a full type.
[0040]
For the full type in which the line unit 24 is configured by combining the two unit bodies 32, as will be clarified in the following description, the line unit of the present invention can be constituted by the unit body 32 alone, The line unit of the unit body 32 alone is called a half type.
[0041]
The line unit 24 of FIG. 5 is a full type standard specification, and a full size printed circuit board 34 is accommodated in the lower stage of the line unit 24 configured by combining two unit bodies 32. Terminal portions 36 for connecting external lines are mounted on both ends of the printed board 34. The terminal portion 36 has a one-touch type terminal connection structure that does not use a screw or the like that can insert and fix a core wire of a signal line. An extension connection connector (not shown) is mounted on the center side of the printed circuit board 34.
[0042]
6 is obtained by adding a half-size printed circuit board to the upper part of each of the unit main bodies 32 with respect to the full type line unit 24 of FIG. That is, in the full-type line unit 24 of FIG. 6, in addition to the lower full-size printed circuit board 34, a half-sized printed circuit board 38 is additionally provided thereon. The printed circuit board 38 provided on the upper stage of the two unit main bodies 32 also has a terminal portion 36 mounted on the outside.
[0043]
FIG. 7 shows the full-type line unit 24 shown in FIG. 5 in which a half-size printed circuit board 38 is added on the upper stage of the left unit body 32.
[0044]
In this way, in the full type line unit 24, the unit main body is changed from the standard type in which one full size printed circuit board 34 shown in FIG. A half-size printed circuit board 38 can be added on one or both of the upper 32.
[0045]
FIG. 8 is a perspective view of the full-type line unit 24 which is the standard specification of FIG. In FIG. 8, the two unit bodies 32 have a symmetrical structure with respect to the butting position. Therefore, the structure of the unit main body 32 located on the left side will be described.
[0046]
Side frame walls 42 are established on both sides around the base portion on the lower side of the printed circuit board 34 of the unit main body 32, and a rear frame wall 44 is formed on the end side. It is an open box frame shape. An end portion side of the side frame wall 42 has a tapered edge 46 that descends downward, and a cover support portion 48 having a gate shape is formed on the upper side of the tapered edge 46.
[0047]
From the rear frame wall 44, a mounting portion 45 for projecting to the board main body is projected. Further, a substrate insertion portion 52 is provided inside the tapered edge 46 of the side frame wall 42. In this embodiment, a substrate insertion portion for supporting the printed circuit board 34 is provided below the substrate insertion portion 52 shown in the figure. The board insertion part 52 is provided in two stages.
[0048]
Further, a substrate receiving base 54 projecting inward is formed on the upper stage of the cover support portion 48 of the side frame wall 42. As is apparent from the right side unit body 32, a stepped portion is formed on the inner side of the upper receiving surface, and a pin hole is opened around the stepped portion. A hole 55 is formed.
[0049]
For this reason, about the upper stage of the unit main body 32, the half-sized printed circuit board can be supported at four points of the two board insertion portions 52 and the board receiving base 54 provided on the side frame walls 42 on both sides.
[0050]
Next, a dust cover mounting structure shown in FIG. 4 will be described. In the end cover 26, a pair of engaging pieces 26 a provided on one end side are fitted into a pair of cover engaging grooves 50 provided on the outside of the cover support portion 48, and the other end side is fitted on the inside of the terminal portion 36. . In the unit cover 28, a pair of engaging pieces 28 a provided at both ends are fitted into engaging grooves 57 provided at the base of the projecting piece 56 provided inside the cover support portion 48. It is aligned by the engaging groove 57 and supported by the overhanging piece 56.
[0051]
Further, the inter-unit cover 30 fits a pair of engaging pieces 30 a provided on both end sides into engaging grooves 58 a of a protrusion 58 provided on the upper end side of the cover support portion 48. The engagement groove 58 a is open to the outside and side of the cover support portion 48.
[0052]
FIG. 9 is an exploded view of the standard full-type line unit 24 of FIG. In this exploded view, substrate insertion portions 52 are formed in two upper and lower stages along the taper edge 46 inside the side frame walls 42 on both sides of the unit main body 32 separated into the left and right. The board insertion portion 52 has a guide piece 52a opened on the opening side in front of the upper portion, and a receiving piece 52b arranged at the rear.
[0053]
Further, the bottom part of the unit body 32 surrounded by the side frame wall 42 and the rear frame wall 44 and on the front side of the cover support part 48 is a base part 40, which is different from the other unit body 32 in front of the base part 40. As is apparent from the right unit main body 32, a pair of engaging pieces 60 extending from the upper surface of the base portion 40 and engaging pieces 62 extending from the lower surface of the base portion 40 are alternately paired. Provided.
[0054]
The printed circuit board 34 has a terminal portion 36 for connecting an external line mounted on an end located along the tapered edge 46 of the unit main body 32. In this standard specification, the side frame wall 42 of the unit main body 32 is provided. It is supported by a support piece 59 that is formed upright on the inner side of the substrate insertion part 52 and the base part 40 and the side frame wall 42 provided in the lower part. Since the printed circuit board 34 located at the lower part is supported by the two full-type unit bodies 32, the printed board 34 is supported at a total of eight points, that is, four points of the board insertion portion 52 and four points of the support piece 59. . Since the center side of the printed circuit board 34 is supported by the support piece 59, when the extension connector is connected to the connector mounted on the center side of the printed circuit board 34, a stress load is applied to the printed circuit board 34 from above. There is no participation.
[0055]
Further, pin holes 80 are provided on the left and right in the vicinity of the support piece 59 of the base portion 40. The pin hole 80 is configured so that a support pin is inserted when a half-size printed board is stored in the lower stage, and the half-size printed board can be supported at six points together with the lower-stage board insertion portion 52 and the support piece 59. Yes.
[0056]
FIG. 10 shows an exploded view of the full-type line unit 24 according to the present invention with the printed circuit board removed. As is apparent from this exploded view, the engagement pieces 60 and 62 provided on the tip end side of the base portion 40 of the two unit main bodies 32 are arranged so as to face each other in the vertical direction. By abutting the two unit main bodies 32, the engagement by the engagement pieces 60 and 62 is supported at four locations.
[0057]
FIG. 11 shows the portions of the engagement pieces 60 and 62 shown in FIG. FIG. 11A is a plan view thereof, and FIG. 11B shows a cross section taken along line XX. As is clear from the cross section of FIG. 11B, a round protrusion 60a is provided at the lower end of the engagement piece 60 provided on the upper side, and is received at the distal end position of the rear base 40. A hole 60b is provided.
[0058]
Similarly, the left engagement piece 62 is also formed with a round protrusion 62a at the top of the tip and a receiving hole 62b on the rear base 40 side. For this reason, when both are abutted, the protrusion 60a and the receiving hole 62b of the engaging pieces 60 and 62 are fitted, and at the same time, the protrusion 62a and the receiving hole 60b are fitted.
[0059]
According to such a fitting structure by butting the two unit main bodies 32, the two unit main bodies 32 are assembled as the line unit 24 with sufficient rigidity by the engagement support by the four sets of engagement pieces 60 and 62. Can be held.
[0060]
FIG. 12 shows a structure for disassembling the two unit main bodies 32 in a state where they are assembled with each other. In order to disassemble the two assembled unit main bodies 32, a gap for disassembly is provided in the part A where the two unit bodies abut each other.
[0061]
FIG. 13 is an enlarged view of a portion A in FIG. In one of the abutting portions, that is, the corner portion of the base portion 40 and the side frame wall 42, a disassembly gap 66 is formed. For this reason, when the unit main body 32 combined as shown in FIG. 12 is disassembled, the engagement pieces 60 and 62 are fitted by, for example, inserting a 100-yen coin 68 into the disassembly gap 66 in FIG. The two can be easily disassembled. Note that the engagement pieces 60 and 62 can be disengaged and disassembled by holding the two assembled unit bodies 32 with both hands and pulling them outward.
[0062]
FIG. 14 is a perspective view of the full-type line unit 24 shown in FIG. 7 when a board print 38 is added to the unit main body 32 on one side in addition to the printed board 34.
[0063]
In FIG. 14, the storage state of the lower full-size printed circuit board 34 by the butting of the two unit main bodies 32 is the same as that of the standard type full type of FIG. A half-size printed circuit board 38 is added on the upper stage of the main body 32.
[0064]
The printed circuit board 38 is attached to the unit main body 32 by inserting the printed circuit board 38 on which the terminal portion 36 is mounted from the upper opening of the cover support section 48 and inserting the printed circuit board 38 into the substrate insertion section 52 provided at the upper part inside the side frame wall. The lock pin 64 is inserted into the stepped hole 55 and fixed to the stepped hole 55. Note that the printed circuit boards 38 and 34 may be connected by connectors.
[0065]
Therefore, even when the line unit 24 is attached to the inside of the panel as shown in FIG. 3, it is possible to easily add the half-size printed circuit board 38 without removing or disassembling the line unit 24.
[0066]
FIG. 15 is an exploded view when a printed circuit board 38 is added to one unit body 32 of FIG. The printed circuit board 38 added to the upper stage of the right unit main body 32 has a terminal part 36 mounted on the end side and a male connector 72 for connecting to the printed circuit board 34 located on the lower stage on the lower surface. Yes.
[0067]
Corresponding to the male connector 72 of the printed circuit board 38, a female connector 70 is mounted on the printed circuit board 34 positioned at the lower stage. For this reason, when mounting the additional printed circuit board 38 to the right unit main body 32, the printed circuit board 38 is lowered from the upper part and inserted into the upper circuit board insertion part 52 formed on the inner side of the side frame wall 42. 54 is placed on the stepped hole 55 portion.
[0068]
Corresponding to the stepped hole 55 of the board receiving portion 54 of the unit body 32, a half hole 75 is formed in the side surface of the additional printed board 38. For this reason, when the printed circuit board 38 is attached to the unit main body 32 and the half hole 75 is aligned with the stepped hole 55, the half hole 75 of the printed circuit board 38 located inside is a stepped part that is cut out from the inside of the board receiving part 54. The hole 55 is filled to form a flat pin hole, and a lock pin 64 is inserted and locked therein.
[0069]
When the printed circuit board 38 is attached to the unit main body 32, the male connector 72 mounted on the lower side is inserted into the female connector 70 of the printed circuit board 34 located at the lower stage, and the connector is connected.
[0070]
Here, the storage size of the printed circuit board determined by the interval at the time of assembling the board insertion portion 52 provided facing the inside of the unit main body 32 is set to a large space with a certain margin with respect to the printed circuit board 34 stored in the lower stage. Therefore, the printed circuit board 34 can be moved back and forth to some extent in the stored state.
[0071]
For this reason, even if the positional relationship between the two is determined by connecting the additional printed circuit board 38 to the female connector 70 with the male connector 72, a certain amount of deviation can be allowed for support on the unit body 32 side. The printed circuit boards 34 and 38 can be accommodated in the line unit with a sufficient margin without being substantially affected by the assembly accuracy of the two printed circuit boards. Note that the printed circuit board 38 and the printed circuit board 34 may not be connected, and in this case, the connector may not be mounted on the printed circuit board.
[0072]
FIGS. 16, 17 and 18 are explanatory diagrams of a half type line unit 24a using two unit bodies 32 used as a single unit in the full type line unit 24 of FIGS. is there.
[0073]
FIG. 16 shows a standard specification of the half-type line unit 24a, and a so-called half-type printed circuit board 74 having a size that can be accommodated in the unit main body 32 is accommodated in the lower stage.
[0074]
FIG. 17 shows a case where the printed circuit board 76 is added to the upper stage with respect to the standard specification of FIG. Further, in FIG. 18, the standard printed board 74 is not provided, but only the additional printed board 76 is provided in the upper stage.
[0075]
FIG. 19 is a perspective view of the half-type line unit 24a of FIG. In FIG. 19, the structure of the unit main body 32 is the same as the two unit main bodies 32 used for the full type shown in FIGS. 5 to 7, but the half type printed circuit board 74 is supported on the lower stage. In this manner, the support pins 78 are mounted in the pin holes 80 provided in advance in the base portion 40, thereby supporting the lower printed board 38 together with the lower board insertion portion 52 and the support piece 59 at six points. .
[0076]
FIG. 20 is a perspective view when only the additional printed circuit board 76 is accommodated in the upper stage in the half type of FIG. Also in this case, the additional printed circuit board 76 is accommodated in the upper part of the unit main body 32, and the lock pin 64 is inserted into the two circuit board insertion parts 52 inside the side frame wall and the two circuit board receiving parts 54 located in front. Supports at 4 points.
[0077]
Here, the characteristics when the full type line unit 24 shown in FIGS. 5 to 7 and the half type 24a shown in FIGS. 16 to 18 are installed in the panel body of the disaster prevention monitoring control panel will be described. become that way.
[0078]
First, no electrical components for electrical connection are mounted on the unit main body 32 side of the line units 24 and 24a, and the electrical components including the terminal portion 36 and the connector are mounted on the printed circuit board 34 side. The main body side 32 and the printed circuit board 34 can be manufactured completely independently, so that component mounting and soldering of the printed circuit board 34 can be easily automated.
[0079]
Further, in the case of the full type line unit 24, a box frame having sufficient rigidity is formed by combining two unit main bodies, and a printed circuit board is accommodated therein. In addition, although a stress load is applied to the combined unit main body 32, a stress load is not applied to the printed circuit board housed therein, and it is possible to reliably prevent solder peeling and damage to parts due to deformation of the circuit board due to the stress load during assembly. This also applies to the half type of the unit body 32 alone.
[0080]
Even if the standard line unit 24 with one full-size printed circuit board mounted on the lower stage is attached to the panel body, the line unit will be installed when a half-sized printed circuit board is added later. Without removing or disassembling from the main body, the additional printed circuit board can be easily attached to the line unit simply by removing the cover provided to prevent dust.
[0081]
The mounting / demounting of the printed circuit board with respect to the line unit 24 in the mounting state in the panel main body can be easily realized by making the unit main body 32 used in the present invention into a box frame shape having a large opening upward and forward. it can.
[0082]
Furthermore, since the support of the printed circuit board accommodated in the unit main body 32 is held in a narrow range of the peripheral wall of the printed circuit board, an area available for mounting components on the printed circuit board can be sufficiently obtained.
[0083]
In the above embodiment, the case where the printed circuit boards are stored in two stages in the circuit unit is taken as an example. However, the number of the stored printed circuit boards is 3 if the space in the depth direction of the panel body can be secured. It can be increased to 4 stages.
[0084]
In the above-described embodiment, the additional printed circuit board is connected to the already stored printed circuit board by the direct connection of the connector, but the connection may be made between the printed circuit boards using a connector cable. Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages thereof.
[0085]
【The invention's effect】
As described above, according to the present invention, the unit body is completely independent from the circuit board in both the full type that forms the line unit by a pair of two unit bodies and the half type that forms the unit body alone. By constructing only as a board housing that does not require any electrical connection, soldering and connector connection for electrical connection between the unit body and the circuit board are not required, and all electrical components are mounted on the circuit board. As a result, automation is facilitated, the assembly work of the line unit can be simplified, and the cost can be reduced.
[0086]
In addition, since the line unit is formed as a single box frame with two full-type unit bodies butted together as a pair, the line unit is attached to the stored printed circuit board when the line unit is attached. No stress load is applied, and it is possible to reliably prevent solder peeling and component damage due to the stress load applied to the printed circuit board. This also applies to the half type used in the unit body alone.
[0087]
In addition, in both the full type where the two unit bodies are abutted and the half type of the unit body alone, the unit body has a large opening in the front and rear and upward directions as viewed from the base of the unit body. The size of the printed circuit board can be easily attached and removed even when it is attached to the main body of the board, which makes it easy to replace or add to the printed circuit board stored in the line unit without removing or disassembling the line unit. it can.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a disaster prevention monitoring control panel using a line unit of the present invention.
FIG. 2 is a block diagram of the disaster prevention monitoring control panel of FIG.
FIG. 3 is an explanatory diagram of a panel body to which the line unit of the present invention is attached.
FIG. 4 is an explanatory diagram of attaching a dust cover to the line unit of FIG. 3;
FIG. 5 is a cross-sectional view of the line unit of the present invention, which is a full type standard specification.
FIG. 6 is a cross-sectional view of the line unit of the present invention which is a full type and has both sides added.
FIG. 7 is a cross-sectional view of a line unit of the present invention which is a full type and has one side added.
8 is a perspective view of the line unit of the present invention, which is the standard specification of the full type of FIG.
9 is an exploded view of FIG.
FIG. 10 is an assembly explanatory diagram of the unit main body of FIG.
11 is an enlarged view of the butt portion of FIG.
FIG. 12 is an explanatory diagram of a structure for disassembling a combined unit body
13 is an enlarged view of part A in FIG.
14 is a perspective view of the line unit of the present invention in which the full type of FIG.
15 is an exploded view of FIG.
FIG. 16 is a cross-sectional view of a line unit according to the present invention which is a standard specification of a half type.
FIG. 17 is a cross-sectional view of a line unit of the present invention that is added as a half type.
FIG. 18 is a cross-sectional view of a line unit according to the present invention, which is a half type and only for an extension.
FIG. 19 is a perspective view of the line unit of the present invention which is a standard specification in the half type of FIG.
FIG. 20 is a perspective view of the line unit of the present invention in the half type of FIG.
FIG. 21 is an explanatory diagram of a conventional line unit for soldering terminal fittings to a printed circuit board.
22 is a partial cross-sectional view seen from the side of FIG. 21.
FIG. 23 is an explanatory diagram of a conventional line unit in which terminal fittings are soldered to a printed circuit board for terminals and connected to the printed circuit board by a connector
24 is a partial cross-sectional view seen from the side of FIG. 23.
[Explanation of symbols]
1: Disaster prevention monitoring control panel
1a: Door
2: Main CPU
3a, 3b: Line unit
22: Board body
24: Line unit (full type)
24a: Line unit (half type)
26: End cover
28: Unit cover
30: Cover between units
32: Unit body
34: Printed circuit board (for full type standard)
36: Terminal section
38: Printed circuit board (for expansion)
40: Base unit
42 :: Side frame wall
44: Rear frame wall
45: Mounting part
46: Tapered edge
48: Cover support
52: Substrate insertion part
52a: Guide part
52b: receiving part
54: Substrate receiving part
55: Stepped hole
59: Support piece
60, 62: engagement pieces
60a, 62a: protrusion
60b, 62b: receiving holes
64: Lock pin
66: Gap for disassembly
70: Female connector
72: Male connector
75: Half hole
78: Support pin
80: Pin hole

Claims (8)

In the line unit of the disaster prevention control panel that is installed inside the panel and connected to the signal lines from inside and outside,
A base part placed at a mounting position inside the panel, a frame wall having a side frame wall and a rear frame wall opened at least upward and forward relative to the base part, and a gate above the side frame walls on both sides A unit body composed of a cover support portion formed in a shape and a substrate support portion formed inside the side frame wall and supporting a peripheral edge of the printed circuit board;
A printed circuit board in which two unit bodies are combined and arranged in a state where the front frame wall opening faces each other, and a terminal part for connecting an external signal line is mounted on the board support part of each unit body. A line unit for a disaster prevention monitoring control panel, wherein the line unit is supported in substantially parallel to the base and accommodated in the unit. 2. The circuit unit of the disaster prevention monitoring control panel according to claim 1, wherein the board support portion of the unit main body has at least two steps of board insertion portions in a stepped manner at a position close to the rear frame wall inside the side frame wall. And at least two stages of substrate receiving portions near the front opening side inside the side frame wall, and the two unit bodies are combined in a pair in the lower stage. A line unit for a disaster prevention control panel characterized in that a full-size printed circuit board determined by the storage interval is stored and a half-sized printed circuit board corresponding to each unit body is stored in the upper stage. The line unit of the disaster prevention monitoring control panel according to claim 2, wherein when a plurality of printed circuit boards are stored in multiple stages in a state where the unit bodies are combined as a pair, the terminal portions mounted on each printed circuit board are A line unit for a disaster prevention monitoring control panel, which is arranged in a downward staircase pattern toward the outside. The circuit board unit of the disaster prevention monitoring control panel according to claim 2, wherein the board receiving portion disposed at the upper position near the front opening side of the unit body forms a notch step portion on the upper inner side, A pin hole is opened as the center position, a half hole corresponding to the pin hole is formed at the end of the half-size printed board that fits into the notched step, and the printed board is formed in the stepped pin hole of the notched step. A line unit for a disaster prevention monitoring control panel, characterized in that a lock pin is inserted and supported with the half-holes aligned. 2. The line unit of the disaster prevention monitoring control panel according to claim 1, wherein the engagement pieces that are fitted to the upper surface and the lower surface of the front end of the base of the counterpart are alternately arranged at the abutting portion of the front of the base of the unit main body. Line unit for disaster prevention monitoring control panel characterized by extending to The line unit of the disaster prevention monitoring control panel according to claim 1, wherein a gap to be used for disconnection in a fitted state is formed in a corner portion from the base portion of the butted portion of the unit body to the frame wall. The disaster prevention monitoring control panel line unit. The line unit of the disaster prevention monitoring control panel according to any one of claims 1 to 6, wherein the unit main body alone stores and supports one or a plurality of half-sized printed boards. Line unit. 8. The line unit of the disaster prevention monitoring control panel according to claim 7, wherein the board receiving portion disposed at a lower position near the front opening side of the unit main body is a support piece standing on the base portion and below the printed board. A line unit for a disaster prevention monitoring control panel, wherein a support pin is inserted into a pin hole of the base portion to support an open side of a half-size printed circuit board while the side is supported.

Images