JP4767459B2 - Arrester device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an arrester device (lightning arrester) that protects electrical equipment of a terminal device to which a telephone line or a signal line is connected from lightning surges.
[0002]
[Prior art and issues]
  Arrester devices installed in the middle of telephone lines and signal lines to protect the electrical equipment connected to the telephone lines and signal lines from malfunctions and damage due to lightning surges are circuit components such as lightning protection elements and discharge gaps that limit surge voltages. A lightning protection circuit board that is mounted on a board is housed in a box-shaped insulating housing, and screw-type wiring terminals that are connected to telephone lines, signal lines, etc. are arranged at both ends of the housing. Have(For example, see Patent Document 1).
  [Patent Document 1] CD-ROM of Japanese Patent Application No. 5-39030 (Japanese Utility Model Application Laid-Open No. 7-11812)
[0003]
For example, a telephone line on which this arrester device is installed is wired with a plurality of lines arranged on a switchboard or the like at a small pitch, and the arrester device is installed on each of the plurality of telephone lines. Normally, a plurality of arrester devices installed on a plurality of telephone lines are of the same type and of the same size, and a plurality of devices are arranged in a line. Each arrester device has a structure in which one or more screw connection terminals are arranged in the thickness direction at both ends in the width direction perpendicular to the thickness direction, so it is difficult to reduce the thickness in the thickness direction. When they are polymerized and arranged, the entire mounting space becomes large. For this reason, when an arrester device is attached to all telephone lines due to additional construction or the like, the installation space may not be secured. In such a case, the number of arrester devices can be reduced, or the arrester device can be attached only to the telephone line connected to important terminal equipment, but the arrester device of multiple telephone lines is attached. Damage may occur due to lightning surge intrusion from no line.
[0004]
Also, the wiring work to connect the insulated wire of the telephone line to the arrester device attached to the switchboard etc., and the work to connect the ground wire to the grounding terminal of the arrester device can be screwed with the screw type wiring terminal of the arrester device, or However, since the soldering method is used, there is a problem that work efficiency is large and workability is poor.
[0005]
An object of the present invention is to provide a compact and slim arrester device that solves workability problems such as mounting space and connection.
[0006]
[Means for Solving the Problems]
  As a technical means for achieving the above object, the present invention is partially formed on a substrate.A relatively large circuit component of multiple types of circuit components is placed in the opening, and all other circuit components are placed only on one side of the front or back side of the board.Lightning protection circuit boardRectangleArrestor unit housed in a thin first housing and the first housingSame asHaving a thickness ofOblong trapezoidIn the thin second housing,At the lower end of the substrate protruding from the lower part of the first housingIt has a terminal block that incorporates circuit parts including connector parts that are detachably connected electrically and mechanically using a plug-in method.AndOf the arrester unitA pair of power supplies for illuminating the light emitting elements on both sides of the connector part at the center of the terminal block, wherein a light emitting element for displaying the presence or absence of deterioration of the lightning protection circuit board is disposed on the upper side of the board An input terminal is disposed, and a pair of screw-type ground terminals are disposed so as to penetrate from the upper surface to the lower surface of both end portions of the terminal block,At the upper end of the terminal blockSaidThe base end of the arrester unit is detachably connected to the wholeSameIt is characterized by having a thin thickness.
[0007]
The lightning protection circuit board of the arrester unit according to the present invention is a circuit board in which a plurality of types of circuit parts such as a lightning protection element, a discharge gap, and a resistance are mounted on a printed circuit board. By placing all other circuit components horizontally on either the front or back side of the board, the maximum of the whole board and circuit parts can be obtained. The thickness is regulated as small as possible to make the lightning protection circuit board thinner. By storing this thin lightning protection substrate in the same thin first casing, the arrester unit becomes a slim and compact thin part. The terminal block is made thin with the same thickness as this thin arrester unit, the base end of the arrester unit is abutted against the upper end of the terminal block, and it is detachably connected electrically and mechanically by the plug-in method. Is a thin and slim arrester device with almost the same thickness. Such a thin and slim arrester device can be mounted on a switchboard or the like where telephone lines and signal lines are installed with a small mounting space, and a plurality of arrester devices can be mounted by overlapping in the thickness direction in a narrow space. It becomes easy.
[0008]
According to the present invention, in the above configuration, a light emitting element for displaying the presence or absence of deterioration of the lightning protection circuit is disposed in a part of the first housing of the arrester unit, and the light emitting element is turned on at both ends of the terminal block. It features a structure in which a power input terminal is provided. Here, the light-emitting element of the arrester unit is a light-emitting diode or the like, and lights up when a DC voltage or an AC voltage is applied. The power input terminals for supplying power for lighting the light emitting elements are a pair of input terminals arranged at both ends of the terminal block, and the pair is on both sides of the connector component for the arrester unit housed in the center of the terminal block. Arranged along the surface.
[0009]
According to the present invention, in the above configuration, a screw-type ground terminal is provided so as to penetrate from the upper surface to the lower surface of both ends of the terminal block, and a rail mounting bracket is screwed to the lower surface of the terminal block with the screw-type ground terminal. It is characterized in that the rail mounting bracket is detachably connected to a terminal block mounting DIN rail. The rail mounting bracket here is one-touch connected to the DIN rail, and an installation rail or the like generally used for a relay circuit or the like is applied as the DIN rail.
[0010]
In addition, the present invention is a method in which a plurality of thin terminal blocks are overlapped in the terminal block thickness direction and aligned on the same surface, corresponding arrester units are connected to the individual terminal blocks, and both end portions of the plurality of terminal blocks are connected. Connected to each of the plurality of power supply input terminals arranged in a straight line, the connection terminal portions of the connection bar terminal, in which a plurality of connection terminal portions connected to each of the plurality of power supply input terminals are integrated in series by the connection bar portion, are inserted. It is characterized by a structure that is electrically and mechanically connected to each other, and a plurality of thin terminal blocks are superposed in the thickness direction of the terminal block and aligned on the same surface, and corresponding arrester units are arranged on the individual terminal blocks. It is characterized by a structure in which each connection terminal portion of the connection bar terminal is electrically and mechanically connected to a plurality of screw-type ground terminals arranged linearly at both ends of a plurality of terminal blocks. To do.
[0011]
Here, the connecting terminal of the connecting bar terminal is a metal claw having a bifurcated shape, etc., which is detachably inserted into both the power input terminal of the elastic metal plate of the terminal block and the ground terminal such as a metal screw. Mechanically articulated. A plurality of such connecting terminal portions are integrated by a single connecting bar portion to constitute a connecting bar terminal. The connecting bar terminal is adjusted in length by cutting the connecting bar part with a nipper or the like, if necessary, or each connection terminal part divided into a plurality of connection terminal parts and divided as a single terminal. used.
[0012]
  Also, GroupThe front side printed wiring part and the back side printed wiring part formed to face both sides of the board in the same pattern are electrically connected in parallel through the through hole formed by penetrating the board in the same place of both printed wiring parts. A lightning protection circuit board is provided which is connected to allow the same lightning surge current to flow through both the front and back printed wiring portions. ThisPlaceIn this case, a circuit component including a lightning protection element with a lead is placed on the board in a horizontal specification, the lead of the lightning protection element is inserted into the through hole of the board, and the front side printed wiring part and the back side printed wiring part of the board are paralleled by the same lead Connecting.
[0013]
The substrate here is a printed circuit board, mounted with lightning protection circuit components such as lightning protection elements and discharge gaps, and connected by printed wiring portions (wiring patterns) printed at a plurality of locations on the substrate. The current that flows in the printed wiring section varies, and in particular, the printed wiring section where lightning surge current flows through the connection of the lightning protection element is formed facing both the front and back surfaces of the board, and the pair of printed wiring sections on both the front and back surfaces are passed through. Electrical connections are made in parallel through the holes so that the same lightning surge current flows in both printed wiring sections. The parallel connection through the through holes of the printed wiring portions on both sides of the board is a connection by solder filled in the through holes or a connection by leads of circuit components such as lightning protection elements inserted through the through holes. In this way, the lightning surge current passage allowable value of the printed wiring portion formed on the substrate is increased, and a printed wiring having a predetermined current capacity corresponding to the lightning protection element performance is realized on the substrate. As a result, it is not necessary to wire circuit components such as lightning protection elements mounted on the board with wires with large current capacity, making it easy to manufacture a lightning protection circuit board and not using wires for wiring. Thinning and slimming of the lightning protection circuit board is facilitated. Thinning and slimming of the lightning protection circuit board can be realized more effectively by a combination of configurations in which large components are arranged in the openings of the board.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings.
[0015]
FIG. 1 shows an arrester device unit in which a plurality of thin and slim arrester devices 10 are installed in parallel on one DIN rail 70. FIG. 2 and FIG. 3 show one arrester device 10. The arrester device 10 has a thin and slim substantially rectangular arrester unit 20, and the same thin and slim substantially trapezoidal terminal block 40. The base end portion of the arrester unit 20 is detachably electrically and mechanically connected to the upper end portion of the terminal block 40, and the terminal block 40 is detachably mounted on the DIN rail 70 via the rail mounting bracket 50. A pair of connecting bar terminals 60 for power supply and an insulated wire 65 such as a telephone line are detachably electrically and mechanically connected to the terminal block 40 of the plurality of arrester devices 10.
[0016]
As shown in FIG. 5, the arrester unit 20 includes a lightning protection circuit board 21 and a thin, substantially rectangular first housing 30 that houses the lightning protection circuit board 21. The lightning protection circuit board 21 is configured by mounting a plurality of types of circuit components on a single board (printed board) 22. The circuit components of the lightning protection circuit shown in FIG. 6 are the lightning protection element Z and discharge gap G for limiting lightning surge, the fuse F that blows due to deterioration of the lightning protection element, and the light emission for displaying the presence or absence of deterioration of the lightning protection circuit. A light emitting diode LED, a rectifier diode D, and a resistor R, which are elements. The light emitting diode LED is turned on when a DC voltage or an AC voltage is applied. At this time, the light emitting diode LED is turned off when the fuse F is blown out due to deterioration on the lightning protection element side. Application of the power supply voltage of the light emitting diode LED is performed using a pair of connecting bar terminals 60 and a DC3V battery during daily maintenance and inspection.
[0017]
The substrate 22 of FIG. 6 has rectangular hole openings 23 and 24 at two locations, and one opening 23 is provided with, for example, a discharge gap G, which is the largest and bulky large component among circuit components. A printed wiring portion 26 of the substrate 22 is soldered and a glass tube type fuse F is disposed in the other opening 24. In addition, the lightning protection element Z, the light emitting diode LED, the rectifier diode D, and the resistor R are disposed on one side of the substrate 22 in a horizontal specification and solder-connected to the printed wiring portion 26. The light emitting diode LED is disposed in a notch 25 formed on the upper side of the substrate 22. In this way, by arranging a large component in the opening 23 of the substrate 22 and arranging the circuit component on only one side of the substrate 22 so that the installation height from the substrate 22 is as small as possible. The overall thickness of the substrate 22 in the thickness direction can be minimized, and the lightning protection circuit substrate 21 can be made slim and thin, and this can be housed in the slim and thin first housing 30. .
[0018]
In addition, it is effective to form a pair of the printed wiring portion 26 of the substrate 22 through which at least lightning surge current flows with the same pattern on both the front and back surfaces of the substrate 22 and connect the pair through-holes. . For example, as shown in FIG. 7, the printed wiring portion 26 to which the lightning protection element Z is connected has a front side printed wiring portion 26 a formed on the surface of the substrate 22 and a back side printed wiring portion 26 b formed on the back surface of the substrate 22. . The printed wiring portions 26a and 26b on both the front and back surfaces are opposed to each other in the same pattern, and through holes H are formed through the substrate 22 at both ends. The lead Za of the lightning protection element Z is inserted into the through hole H, the lead Za is connected to each printed wiring part 26a, 26b with solder Zb, and the printed wiring parts 26a, 26b on both the front and back surfaces are connected in parallel. Then, the same lightning surge current is caused to flow through the pair of printed wiring portions 26a and 26b on both the front and back surfaces through the lightning protection element Z.
[0019]
In this way, the lightning surge current passing allowable value of the printed wiring portion 26 of the substrate 22 is increased approximately twice, and a thin and slim lightning protection circuit board 21 having a predetermined current capacity corresponding to the lightning protection device performance can be easily obtained. Can be configured. In addition, by forming the printed wiring portions 26 on both the front and back sides of the substrate 22, circuit components can be arranged on both the front and back sides of the substrate 22 and effective use of the restricted space on both the front and back sides of the substrate 22 is achieved. The substrate 22 itself can be miniaturized. Furthermore, the operation of wiring circuit components such as a lightning protection element mounted on the substrate 22 with an electric wire having a large current capacity becomes unnecessary, and the lightning protection circuit board 21 can be easily manufactured.
[0020]
The first housing 30 is a rectangular cylindrical resin case. As shown in FIG. 5, the upper and lower ends are opened, the lower end 27 of the substrate 22 protrudes from the lower opening end, and the upper opening end is resin. The lid plate 31 is closed. A window hole 32 is formed in a part of the cover plate 31, and the light emitting diode LED is arranged close to the window hole 32. The printed wiring portion 26 is exposed in a comb-like shape on both the front and back surfaces of the lower end portion 27 of the substrate 22 protruding from the lower end of the first housing 30, and the protruding lower end portion 27 is plugged into the female connector of the terminal block 40. Electrically and mechanically connected in a manner. On both the front and back surfaces of the lower portion of the first housing 30, guide protrusions 33 that determine the directionality of the first housing 30 when the first housing 30 is attached to the terminal block 40 are formed.
[0021]
The terminal block 40 includes a thin second housing 41 having the same thickness as the thin first housing 30, a base substrate (printed circuit board) 42 incorporated in the second housing 41, a connector component 43, and a clamp connection. It consists of circuit components such as a terminal 44, a screw-type ground terminal 45, and a power input terminal 47. The 2nd housing | casing 41 is a horizontally long substantially trapezoid resin case, and has the guide groove 46 by which the guide convex part 33 of the 1st housing | casing 30 is inserted by the upper end part opened. A horizontally long base substrate 42 is housed in an intermediate position in the second housing 41 and screwed. A connector component 43 is soldered on the center portion of the base substrate 42. The connector part 43 is a female connector, and the protruding lower end portion 27 of the substrate 22 of the arrester unit 20 is removably fitted from above. A pair of connection terminals 44, a pair of ground terminals 45, and a pair of power input terminals 47 are disposed on both ends of the base substrate 42, and the resistance of the lightning protection circuit is connected to the back side of the base substrate 42.
[0022]
The connection terminal 44 is a clamp-type terminal component fixed on the base substrate 42 by soldering, and connects the two insulated wires 65 and the wiring pattern of the base substrate 42. As shown in FIG. 5, this connection work is performed by inserting a screwdriver 71 from a hole provided on the upper surface of the connection terminal 44 and pushing down a clamp portion inside the connection terminal 44. This is done by simply inserting the conductive part. When, for example, two plus wires and a minus wire of a telephone line are connected to each of a pair of connection terminals 44 installed at both ends of the terminal block 40, the plus wires are connected to each other with a resistance of 10Ω. The electric wires are connected to each other with a resistance of 10Ω, and the telephone line is not cut off even if the arrester unit 20 is removed from the terminal block 40 by replacement or the like.
[0023]
A DC power supply input terminal 47 is disposed between the connector part 43 and the connection terminal 44 on the base substrate 42. The pair of power input terminals 47 is a direct current power supply terminal or an alternating current power supply terminal, and is configured by a flat plate-like metal plate. The lower end portion of the power input terminal 47 penetrates the base substrate 42 and is soldered, and the upper portion stands on the base substrate 42 so as to be along the back surface of the connection terminal 44. When the upper part of the connection terminal 44 and the side surface of the connector part 43 are opposed to each other, and the flat connection bar terminal 60 is detachably inserted from above, the connection bar terminal 60 is electrically connected to the power input terminal 47. Connected mechanically and mechanically.
[0024]
The pair of ground terminals 45 are screw terminals, penetrate both ends of the second housing 41 from the base substrate 42, and are screwed to both ends of the rail mounting bracket 50 on the lower surface of the second housing 41. The head of the ground terminal 45 that is a screw terminal is engaged on the base substrate 42 and fastened to the rail mounting bracket 50, so that the ground terminal 45 is attached to both end portions of the second housing 41. A rail mounting bracket 50 is detachably attached to the lower surface of the bracket.
[0025]
The rail mounting bracket 50 is attached to and detached from the DIN rail 70 in a one-touch manner. As shown in the bottom view of FIG. 2C, the rail mounting bracket 50 has locking step portions 51 and 52 in which both end portions of the DIN rail 70 are fitted at the center portion of the lower surface, and one locking step. The part 51 has a fixed claw structure, and the other locking step 52 has a movable claw structure having a movable claw 53 and a spring material 55. A slide plate 54 that is manually moved back and forth from the outside is attached to one end of the rail mounting bracket 50, and a movable claw 53 is integrally formed at the tip of the slide plate 54. The slide plate 54 moves back and forth between the most advanced position where the movable claw 53 is engaged with the DIN rail 70 and the last retracted position where the movable claw 53 is released from the engagement with the DIN rail 70, and the spring material 55 is moved to the slide plate 54. Energize in the direction to advance forward.
[0026]
The connecting bar terminal 60 that is detachably attached to the terminal block 40 is a general-purpose terminal that is commonly used for either a DC power supply terminal, an AC power supply terminal, or a grounding terminal. The connecting bar terminal 60 includes a plurality of bifurcated connecting terminal portions 61 and a connecting bar portion 62 that integrally connects the base end portions of the connecting terminal portions 61 arranged in a horizontal row. The number of the connecting terminal portions 61 of the connecting bar terminal 60 is arbitrary, and the connecting bar portion 62 is cut with a nipper or the like so that the length can be adjusted or the connecting terminal portions 61 can be individually separated and used independently. You can also. By connecting and connecting the connection terminal portion 61 to the power input terminal 47 of the terminal block 40, the connecting bar terminal 60 is used as a power supply terminal for light-emitting diode lighting. Alternatively, the connecting bar terminal 60 is used as a ground lead terminal by inserting and connecting the connection terminal portion 61 to the ground terminal 45 of the terminal block 40.
[0027]
The apparatus unit shown in FIG. 1 is obtained by superposing five arrester devices 10 on one DIN rail 70, and each of the terminal blocks 40 and arrester units 20 of each arrester device 10 has a sufficient thickness. Due to the small, thin and slim shape, the mounting space for the five arrester devices can be reduced, the DIN rail 70 can be shortened, and another arrester device can be easily installed in an empty portion of the rail. Actually, one arrester device 10 is thinned to a thickness of about 10 mm (the degree of thinning is about 1/3 of the conventional product), and the mounting space is reduced to about half of the conventional mounting space. I know I can do it. Therefore, a compact design of the storage box of the device unit using a plurality of arrester devices 10 and space saving of the installation place can be achieved, and it is also easily realized that the arrester device is attached to all telephone lines by additional work, It is possible to protect all terminal devices on a large number of telephone lines from lightning surges.
[0028]
The installation of the arrester device 10 to the DIN rail 70 or the like as described above is performed in the following manner.
[0029]
The assembly of one arrester device 10 is performed by a simple operation of inserting the arrester unit 20 into the terminal block 40. In this case, as shown in FIG. 5, the terminal protrusion 40 and the arrester unit 20 are fitted with the polarities of the terminal block 40 and the arrester unit 20 wrong by fitting the guide protrusion 33 of the first housing 30 into the guide groove 46 of the second housing 41. Mistakes in assembly work such as matching are prevented. The terminal block 40 integrated with the arrester unit 20 is attached to the DIN rail 70, or only the terminal block 40 is attached to the DIN rail 70, and then the arrester unit 20 is fitted to the terminal block 40.
[0030]
The terminal block 40 may be attached to the DIN rail 70 as shown in FIG. By tilting the terminal block 40, one locking step 51 of the rail mounting bracket 50 on the lower surface is locked to one end of the DIN rail 70, and the terminal block 40 is rotated downward on the rail with this locking point as a fulcrum. The movable claw 53 protruding from the other locking step 52 is pressed against the other end of the DIN rail 70. With this pressing, the movable claw 53 is temporarily retracted so as to compress the spring material 55 and then moved forward and returned to the DIN rail 70 by the elasticity of the spring material 55 to complete the one-touch attachment of the terminal block 40. Further, when the terminal block 40 is removed from the DIN rail 70, the slide block 54 of the rail mounting bracket 50 is moved backward by a screwdriver or the like so that the movable claw 53 is removed from the DIN rail 70, and the terminal block 40 is removed as shown in FIG. Is done by tilting.
[0031]
In addition to being attached to the DIN rail 70, the arrester device 10 may be directly attached to an attachment surface such as a switchboard as necessary. In this case, the DIN rail 70 is removed from the terminal block 40, and the terminal block 40 is screwed to the mounting surface using the ground terminals (screw terminals) 45 at both ends of the terminal block 40.
[0032]
After a plurality of arrester devices 10 are placed on the DIN rail 70 and installed, a pair of connecting bar terminals 60 are connected to a pair of terminal blocks 40 as shown in FIG. Connect to the power input terminal 47 by connecting. In the case of a direct current voltage, one side of the plurality of terminal blocks 40 to be superimposed is arranged with a positive power input terminal 47 in a line at a constant pitch, and the other end is arranged with a negative power input terminal 47 in a line at a constant pitch. The connection terminal portion 61 of the connecting bar terminal 60 is inserted into each of the two rows. For example, the electrode lead wire 81 is drawn out from the pair of connecting bar terminals 60 and connected to the DC3V battery 82. The light emitting diode LED incorporated in the arrester unit 20 of the plurality of arrester devices 10 is lit by the DC3V voltage of the battery 82, and only the light emitting diode of the arrester device that does not function due to deterioration of the lightning protection circuit is not lit. The presence or absence of deterioration of the plurality of arrester devices 10 is detected by visually detecting whether or not the light-emitting diodes are lit. In the arrester device that is detected as having deteriorated, only the arrester unit is replaced with the terminal block remaining as it is. Economic exchange is possible.
[0033]
The battery 82 turns on the light emitting diode LED only when it is necessary for maintenance / inspection of the arrester device unit. When the light emitting diode LEDs of the plurality of arrester devices 10 are turned on daily, as shown in FIG. A dedicated power adapter 83 is used. The power adapter 83 is attached to the DIN rail 70 and converts a commercial AC voltage of AC 100V into a DC 3V voltage. If a pair of connecting bar terminals 60 attached to the power adapter 83 and the arrester device unit are connected by a power cable 84, each light-emitting diode LED in the plurality of arrester devices 10 is lit on a daily basis for daily maintenance and inspection. Yes.
[0034]
The arrester device unit in which a plurality of arrester devices 10 are installed on the DIN rail 70 is grounded by connecting a ground wire 85 to one end of the DIN rail 70 via a tooth flat washer 86 as shown in FIG. The tooth flat washer 86 makes the contact between the ground wire 85 and the DIN rail 70 more reliable. The grounding terminal 45 of the arrester device 10, the rail mounting bracket 50, and the DIN rail 70 are at the same potential, and the plurality of arrester devices 10 are grounded by the common DIN rail 70 by grounding the DIN rail 70.
[0035]
12, each arrester device 10 is grounded by grounding the connection bar terminal 60 in a state where the connection terminal portion 61 of the connection bar terminal 60 is inserted and connected to the ground terminal 45 of the plurality of arrester devices 10. You may make it do.
[0036]
【The invention's effect】
According to the present invention, the arrester unit and the terminal block constituting the arrester device are both thin parts having substantially the same thickness. In other words, the arrester device is significantly thinned, and a plurality of arrester devices are telephoned. It is possible to install with less installation space on distribution boards etc. where lines and signal lines are installed, and it is easy to install multiple arrester devices by overlapping them in the thickness direction even in narrow spaces .
[0037]
In addition, by arranging the power input terminals that turn on the light-emitting elements built in the arrester unit at both ends of the terminal block, it is common to the power input terminals of each terminal block in a state where multiple terminal blocks are overlapped in parallel. By connecting the connecting bar terminals, it is possible to easily supply power for lighting the light emitting element.
[0038]
In addition, by using a common connecting bar terminal for wiring for supplying power to a plurality of arrester devices, the power wiring work for lighting the light emitting element can be easily and quickly performed with fewer man-hours. In addition, screw-type ground terminals are arranged at both ends of the terminal block of the arrester device, and a common bar terminal is connected to the screw-type ground terminal of each terminal block in a state where a plurality of terminal blocks are overlapped. If this is done, the number of wiring work steps for grounding a plurality of arrester devices can be reduced and can be carried out easily and quickly.
[0039]
In addition, by attaching the rail mounting bracket to the lower surface of the terminal block with screw type ground terminals at both ends of the terminal block, and connecting this rail mounting bracket to the DIN rail for terminal block mounting, multiple thin arrester devices It is possible to easily and quickly carry out the work of attaching and removing by superimposing on the rail.
[0040]
In addition, a pair of printed wiring portions are formed opposite to each other on both the front and back sides of the lightning protection circuit board, and the same lightning surge current is caused to flow through the pair of printed wiring portions. The lightning surge current passage allowable value increases, and a highly reliable lightning protection circuit board having a predetermined current capacity corresponding to the lightning protection device performance can be provided. This lightning protection circuit board is easy to manufacture because there is no need to wire circuit parts such as lightning protection elements mounted on the board with wires with a large current capacity, and the lightning protection circuit board can be made thin by omitting wiring wires. It is easy to make slim, and it is easy to make the inner layer of the arrester device in which the lightning protection circuit board is housed in a casing thin and slim.
[Brief description of the drawings]
FIG. 1 is a perspective view of an arrester device showing an embodiment of the present invention.
2A is a plan view of an arrester device, FIG. 2B is a front view, and FIG. 2C is a bottom view;
3A is a right side view of the arrester device, and FIG. 3B is a left side view.
4A is a front view of a connecting bar terminal attached to the arrester device, and FIG. 4B is a side view thereof.
FIG. 5 is an exploded front view including a partial cross section of the arrester device.
6A is a front view of a lightning protection circuit board in the arrester device, and FIG. 6B is a cross-sectional view taken along the line tt.
7 is a partially enlarged cross-sectional view of the lightning protection circuit board of FIG.
FIG. 8 is a front view when the arrester device is attached to the DIN rail.
FIG. 9 is a front view when the connecting bar terminal is attached to the arrester device.
FIG. 10 is a side view of an arrester device unit in which a plurality of arrester devices are superposed.
FIG. 11 is a plan view of an arrester device unit in which a plurality of arrester devices are superposed.
FIG. 12 is a partial plan view of an arrester device unit in which a plurality of arrester devices are superposed.
[Explanation of symbols]
10 Arrester device
20 Arrester unit
21 Lightning protection circuit board
22 Substrate
23 opening
G Discharge gap (large circuit components)
Z lightning protection element
Za lead
Zb solder
H Through hole
26 Printed wiring section
26a Front side printed wiring section
26b Back side printed wiring section
30 First housing
33 Guide protrusion
40 terminal block
41 Second housing
42 Base substrate
43 Connector parts
44 Connection terminal
45 Screw type grounding terminal
46 Guide groove
47 Power input terminal
50 rail mounting bracket
51, 52 Locking step
53 Movable claws
54 Slide board
55 Spring material
60 Connecting bar terminal
61 Connection terminal
62 Connecting bar
65 Insulated wire
70 DIN rail
82 DC3V battery
83 Power adapter
85 Grounding wire

Claims (4)

A relatively large circuit component of multiple types of circuit components is placed in the opening partly formed on the substrate, and all other circuit components are placed only on one side of the front or back side of the substrate. An arrester unit that houses the arranged lightning protection circuit board in a rectangular thin first housing;
The second housing oblong trapezoidal thin having a thickness of the first casing and the same, freely electrically and removably plug-in system to the lower end of the substrate projecting from the bottom of the first housing possess a terminal block incorporating circuit components including a connector component that is mechanically coupled,
A light emitting element for displaying the presence or absence of deterioration of the lightning protection circuit board is disposed on the upper side of the board of the arrester unit ,
A pair of power input terminals for lighting the light emitting element is disposed on both sides of the connector part at the center of the terminal block, and a pair of screw-type grounding is made to penetrate from the upper surface to the lower surface of both ends of the terminal block. Arrange terminals,
Arrester device, characterized in that the entire linked detachably base end portion of the arrester units to the upper end portion of the terminal block and the thin same thickness. Attach the rail mounting bracket to the underside of the terminal block screwed in the threaded grounding terminal, detachably connected to claims 1 Symbol placement arrester device the rail mounting bracket to the terminal block mounting DIN rail. A plurality of said terminal block by polymerizing the terminal block thickness direction aligned on the same plane, the connecting arrester units corresponding to the individual terminal block, arranged linearly at both ends of the plurality of terminal blocks a plurality of the power supply input terminal, electrically each connection terminal portions of the connecting bar terminal that integrates a plurality of connection terminal portions connected to each of the plurality of power input terminal into a series by the connecting bar portion in plug- 3. The arrester device according to claim 1 , wherein the arrester device is mechanically connected. Multiple by polymerizing a plurality of the terminal blocks in terminal block thickness direction aligned on the same plane, aligned with connecting the arrester units corresponding to the individual terminal block, in a straight line in the end portions of the plurality of terminal blocks The connection terminal portions of the connecting bar terminal, in which a plurality of connection terminal portions connected to each of the plurality of ground terminals are integrated in series by a connecting bar portion, are electrically and mechanically inserted. The arrester device according to claim 1 , wherein the arrester device is connected to the device.

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