JP5084582B2 - Terminal block - Google Patents

Description

  The present invention relates to a terminal block for taking in an information element used for various information communication devices such as a cyclic digital data transmission device and a data transfer device, for example, and particularly performs wiring connection work of electric wires and cables. In connection with this, the present invention relates to the structure of a terminal block that is intended to improve the safety of such wiring connection work.

  The remote monitoring and control apparatus shown in Patent Document 1 is a kind of information communication apparatus using a CDT (Cyclic Data Transfer) system as a transmission system, for example, and the outline of FIG. As shown in the figure, the terminal block is provided.

  Then, for example, as shown in Patent Document 2 or the like, the terminal connection terminal provided at the tip of the primary side (for example, the input side) electric cable is a male that forms the input side terminal of the terminal block. While the terminal connection terminal engaged with the screw and provided at the tip of the electric cable on the secondary side (for example, the output side) is engaged with the male screw constituting the output side terminal of the terminal block, these input / output An invention in which a recess is provided between the side terminals and the input side terminal and the output side terminal are energized and disconnected by detaching the disconnection block from the recess is already known.

Further, in a terminal connector, an invention in which a protective cover having a waterproof, dustproof and insulating function is attached to the main body of the terminal connector so as to open and close its upper surface opening has already been disclosed in Patent Document 3, for example. It is publicly known.
JP 2007-20261 A JP-A-10-289744 Utility Model Registration No. 3108351

  However, in the remote monitoring and control apparatus as shown in Patent Document 1, the terminal block is disposed in a relatively invisible place such as the back surface of the information communication device and in a relatively narrow space between the wall surfaces. Therefore, the space for connecting the wiring at the terminal block is not secured, and the connecting work is easy to find. Therefore, the working environment is not sufficiently good.

  There is a case where the wiring connection work is performed while a DC voltage is applied to the terminal block terminal from the viewpoint of avoiding a power failure state of the remote monitoring control device, etc., even in such an unfavorable working environment. Then, there is a risk that the operator may get an electric shock by causing a ground fault or a short circuit due to an erroneous operation of the operator. Moreover, when an operator is electrocuted, the operator may drop a metal part such as a screw on the terminal block due to the shock or surprise at that time, which may cause a short circuit between the wires.

  On the other hand, in the terminal device with disconnection function shown in Patent Document 2, if the disconnection block is removed, power is disconnected between the input side terminal and the output side terminal. While it can be done without fear of electric shock, if you concentrate on the work, you forget to remove this disconnecting block and do the wiring connection work. is there.

  Further, the terminal connector having the protective cover disclosed in Patent Document 3 does not correspond to the configuration in which the terminals are arranged in the primary side terminal portion and the secondary side terminal portion, and the wiring work When the protective cover is opened, when the protective cover is open, the ground fault is caused by incorrect operation of the operator when wiring connection work is performed with DC voltage applied to each terminal of the terminal block. It is not a configuration that solves the possibility of an electric shock by an operator due to a short circuit.

  Therefore, the present invention, for example, when performing wiring connection work such as electric wires and cables in a terminal block used in an information communication device or the like, even if a DC voltage is applied to each terminal of the terminal block, An object of the present invention is to provide a terminal block that can be surely disconnected between the terminal of the primary side terminal portion and the terminal of the secondary side terminal portion.

The terminal block according to the present invention has a primary side terminal portion and a secondary side terminal portion, wherein one or more terminals constituting an output portion are arranged on the primary side terminal portion, and the second side with one or more terminals constituting the input section to the next terminal portions are arranged, constitutes the input of the terminal and the second terminal portion constituting the output section of the primary-side terminal portion In the terminal block connected to the terminal by the relay unit, the relay unit divides the relay unit into an output unit side relay unit and an input unit side relay unit, and an interruption unit is formed. An opening / closing member that covers the secondary side terminal portion of the primary side terminal portion and the secondary side terminal portion is provided, and the opening / closing member includes the secondary side terminal portion and the input portion side. by swinging to cover the relay unit, inserted in the interruption of the relay portion Te, rocking for energizing between the terminals of the terminal and the second secondary terminal portion of the primary-side terminal portion to open and said secondary-side terminal portion and the input portion side relay unit A disconnecting portion for disconnecting power between the terminal of the primary side terminal portion and the terminal of the secondary side terminal portion away from the interrupting portion of the relay portion, and the terminal block A cover member comprising a main wall facing the surface of the main wall and a side wall extending from the periphery of the main wall toward the surface of the terminal block, and the main wall of the cover member has a linear shape of the inspection instrument. A through hole having an inner diameter that can be inserted through the portion is formed, and the disconnecting portion is provided at the distal end in the extending direction of the protruding portion made of an insulating material extending from the inner surface of the cover member. The side of the terminal block side as viewed from the side of the opening and closing member is more than the side opposite to the terminal block side. The relay portion has a large trapezoidal shape, and the side portion of the terminal block side opposite to the terminal block side when the space portion formed by the interrupting portion is viewed from the side of the opening / closing member. It is characterized by having a substantially trapezoidal shape larger than that (claim 1).

  As a result, when wiring connection work between the terminal of the primary side terminal portion and the terminal of the secondary side terminal portion, the work cannot be performed unless the opening and closing member is opened. Since the disconnecting portion of the opening / closing member is also separated from the interrupting portion of the relay portion according to the opening / closing member, the power is always disconnected between the terminal of the primary side terminal portion and the terminal of the secondary side terminal portion. It will be.

Furthermore, when performing a contact path during voltage measurement or testing of the terminal of the primary side terminal part or the terminal of the secondary side terminal part, the terminal of the primary side terminal part or the terminal of the secondary side terminal part Even when covered with an opening / closing member, measurement can be performed by inserting a linear portion of an inspection means such as a tester measuring rod through a through hole.

As described above, according to the present invention, the opening / closing member is opened to perform the work at the time of wiring connection work between the terminal of the primary side terminal portion and the terminal of the secondary side terminal portion. Since the disconnecting part also moves away from the interrupting part of the relay part according to the opening / closing member, during the wiring connection work, there is always a disconnection between the terminal of the primary side terminal part and the terminal of the secondary side terminal part to be worked on. Since the operator is in an electric state, the operator does not get an electric shock even if the operator performs an incorrect operation, and accordingly, the electric operator may drop a metal part such as a screw into the terminal block. Disappear.

Further , according to the present invention, when performing a contact path at the time of voltage measurement or test of the terminal of the primary side terminal part or the terminal of the secondary side terminal part, the terminal of the primary side terminal part or the secondary side Even if the terminal of the side terminal part is covered with the opening and closing member, the measurement can be performed by inserting the linear part of the inspection means such as a tester measuring rod from the through hole, so that the inspection and measurement work can be simplified. Is possible.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a schematic configuration of an example of the data transmission device 1. This data transmission apparatus employs, for example, a CDT (Cyclic Data Transfer) system as a data transmission system, and in this embodiment, an input device 2, an output device 3, an arithmetic device 4, an interface. 5, the management device 6 and the power source 7, and the input device 2, the output device 3, the arithmetic device 4, the interface 5, the management device 6 and the power source 7 are connected to the buses 8 and 9, respectively. Are known per se.

  In this embodiment, the input device 2 is, as shown in FIGS. 1 and 2, a joint portion 13 to which a cable 11 in which wirings 10 for connecting to the buses 8 and 9 are converged and accommodated is coupled. And the housing | casing 15 provided with the coupling part 14 with which the cable 12 for connecting with the exterior which is not shown in figure is connected is comprised.

  As shown in FIG. 2, the casing 15 of the input device 2 has an opening 16 that is convenient for work and the like, and the casing 15 communicated with the outside through the opening 16. In the internal space 17, an apparatus main body 20 having a terminal block 18 is accommodated. Since the structure of the apparatus main body 20 is well-known, the description is abbreviate | omitted. In addition, the opening 16 is usually open at a position where the space between the opening 15 and the wall surface becomes relatively narrow when the input device 2 is installed, for example. It is not limited to this, and it may be open on the front side of the housing 15.

  As shown in FIG. 2, the terminal block 18 includes a primary side terminal portion 22 and a secondary side terminal portion 23, and, for example, six or more output units are provided on the primary side terminal portion 22 side. 24 (24a to 24f) are arranged in a horizontal row in the figure, and, for example, six or more inputs are provided on the secondary terminal portion 23 side according to the output section 24 of the primary terminal portion 22. The portions 25 (25a to 25f) are arranged in a horizontal row in the drawing. The output section 24 of the primary side terminal portion 22 and the input section 25 of the secondary side terminal section 23 are arranged in multiple rows in the vertical direction in the drawing and are in a vertical relationship in the drawing. The input unit 25 is connected to the input unit 25 at normal time through the conductive relay unit 26 and a disconnection unit 74 described later. The relay unit 26 may be a thin plate made of a metal having excellent conductivity, or may be a wire such as a conductive wire used for wiring.

  In this embodiment, as shown in FIG. 3, the output portion 24 a is connected to the conductive wire 28 extending from the cable 11 via the terminal 44, and the output portion 24 c includes the terminals 45 and 46 and the terminals. They are connected via a conducting wire 29 connecting 45 and 46. The output part 24 b is connected to a conducting wire 30 extending from the cable 11 via a terminal 47. The output unit 24c is connected to the output unit 24e via a terminal 48, a terminal (not shown), and a conductor 31 that connects the terminal 48 and a terminal (not shown). The output unit 24 d is connected to a conducting wire 32 that extends from the cable 11 via a terminal 49. The output unit 24e shown in FIG. 2 is the same as the output unit 24c in using the terminals, and the output unit 24f shown in FIG. 2 is the same as the output units 24b and 24d in using the terminals. Therefore, it is not illustrated and its description is omitted.

  Further, in this embodiment, as shown in FIGS. 2 and 3, the input portions 25 a to 25 d are connected to conductors 35 to 40 extending to the apparatus main body 20 via terminals 50 to 53. Note that the input units 25e and 25f shown in FIG. 2 are the same as the input units 25a to 25d in the usage of the terminals, and thus are not shown and description thereof is omitted.

  Here, the number of the output units 24 and the input units 25 arranged on the terminal block 18 is not limited to the above six or more, and the way of connecting the cable 11 and the output unit 24, between the output units 24 The connection method and the connection method between the input unit 25 and the apparatus main body 20 are not necessarily limited to the connection state described above.

  Next, as an example of the output unit 24 and the input unit 25 arranged on the terminal block 18, the output unit 24b and the input unit 25b will be described with reference to FIG.

  The terminal 47 constituting the output portion 24b is formed of a conductive material and has an annular portion 56 formed with a through hole 55 at the tip thereof. The relay portion 26 is particularly shown in FIG. The through hole 57 formed in the relay portion 26 and the through hole 55 of the annular portion 56 are in communication with each other, and a screw 58 is inserted into the through holes 55 and 57, and the screw 58 is inserted into the terminal block 18. The primary terminal portion 22 is fixed by screwing. Even if there is no difference between the output part 24b and the other output part 24, the through hole 55 of the plurality of terminals 44, 45 or 46, 48 and the through hole 57 of the relay part 26 are communicated with each other and pass through the screw 58. Since there is only a difference that the screw 58 is inserted into the holes 55 and 57 and the screw 58 is screwed to the primary side terminal portion 22 of the terminal block 18, it is not particularly shown and description thereof is also omitted.

  The terminal 51 constituting the input portion 25b is also formed of a conductive material and has an annular portion 61 with a through hole 60 formed at the tip thereof. The relay portion 26 is particularly shown in FIG. The through-hole 62 formed in the relay portion 26 and the through-hole 62 of the annular portion 61 are placed in communication with each other, and a screw 63 is inserted into the through-holes 60 and 62, and the screw 63 is inserted into the terminal block 18. The secondary side terminal portion 23 is fixed by screwing. Since the other input unit 25 is not different from the input unit 25b, it is not particularly shown and description thereof is also omitted.

  By the way, as shown in FIG. 4 (particularly, FIG. 4C), the relay unit 26 extends in a direction in which the interrupting unit 65 intersects the axial direction of the conducting wires 30 and 35. The relay part 26a on the output part 24b side and the relay part 26b on the input part 25b side are completely separated. Further, the space formed by the interrupting portion 65 has a shape in which a disconnecting portion 74 described later can be easily inserted and removed, for example, the side on the side of the terminal block 18 as viewed from the side is the side opposite to the terminal block 18 side. It has a larger trapezoidal shape.

  In this embodiment, the range from the vicinity of the interrupting portion 65 to the end on the input portion 25b side of the relay portion 26, the annular portion 61 of the terminal 51 constituting the input portion 25b, and the screw 63 are described below. An opening / closing member 66 that can be covered with a cover member 67 is attached to the terminal block 18.

  The opening / closing member 66 includes a cover member 67 including a main wall portion 67 a facing the surface of the terminal block 18, a side wall portion 67 b extending from the periphery of the wall portion toward the surface side of the terminal block 18, and the cover member 67. And a pair of pedestals 68 connected to the output portion 24b side through a rotating shaft 69, which are portions extending in the same direction as the axial direction of the conducting wires 30, 35. . The cover member 67 and the base 68 are made of an insulating material.

  Accordingly, as shown in FIGS. 4 and 5, the opening / closing member 66 has a position where the edge surface of the side wall portion 67 b on the side opposite to the main wall portion is substantially parallel to the surface of the terminal block 18, that is, the opening / closing member 66 is The position where the edge surface of the side wall portion 67b on the side opposite to the main wall portion is substantially perpendicular to the surface of the terminal block 18 from the position along the surface of the terminal block 18, that is, the opening / closing member 66 stands against the surface of the terminal block 18. It can swing within the range up to the position.

  When the cover member 67 is positioned along the surface of the terminal block 18, the range from the vicinity of the interrupting portion 65 to the end of the input portion 25 b in the relay portion 26 and the terminal 51 constituting the input portion 25 b. The opening / closing member 66 covering the annular portion 61 and the screw 63 is closed, but the edge surface of the side wall portion 67b on the side opposite to the main wall portion does not abut against the surface of the terminal block 18, and the relay portion 26 A substantially gap corresponding to the thickness of is formed. Thereby, when the opening / closing member 66 is closed, it is avoided that the relay portion 26 is bitten by the side wall portion 67 b of the cover member 67 and the surface of the terminal block 18, and the cover member 67 swings around the rotation shaft 69. Play is ensured.

  Further, on the output portion 24b side of the side wall portion 67b of the cover member 67, as shown in FIGS. 4B and 5, a notch portion 70 having an inner width substantially equal to the lateral width of the relay portion 26 is formed. Accordingly, it is not necessary to strictly take the dimensional accuracy of the gap between the side wall portion 67b of the cover member 67 and the surface of the terminal block 18.

  Further, the cover member 67 is provided with a gap between the side wall portion 67b of the cover member 67 and the surface of the terminal block 18, and the portion of the side wall portion 67b on the input portion 25b side to prevent rattling of the cover member 67. Is extended toward the surface of the terminal block 18 to form an extending portion 71. As shown in FIG. 4A, the surface of the terminal block 18 and the extending portion 71 are closed when the cover member 67 is closed. Are in contact with each other. As shown in FIGS. 4B and 5, the extending portion 71 is formed with a notch portion 72 having substantially the same size as the outer diameter size of the terminal 51 or the outer diameter size of the conductive wire 35. As a result, even when the extending portion 71 comes into contact with the surface of the terminal block 18 when the opening / closing member 66 is closed, the relay portion 26 is prevented from being bitten by the extending portion 71 and the surface of the terminal block 18. The

  Furthermore, as shown in FIGS. 4B and 5, the cover member 67 has a protrusion 73 formed of an insulating material extending from the inner surface of the main wall 67 a, and the protrusion 73 has A disconnecting portion 74 made of a conductive material is provided at the tip in the extending direction. The disconnecting portion 74 corresponds to the shape of the space of the interrupting portion 65 and is in contact with the surfaces of the relay portions 26a and 26b, and at the same time has a shape that can be easily inserted and removed from the interrupting portion 65, for example, viewed from the side. The side on the terminal block 18 side has a substantially trapezoidal shape larger than the side opposite to the terminal block 18 side.

  Regarding the other output units 24a, 24c, 24d, 24e, 24f and the input units 25a, 25c, 25d, 25e, 24f, the point that the relay unit 26 has the interruption unit 65, the arrangement and configuration of the opening / closing member 66, FIG. Are substantially the same as the output unit 24b and the input unit 25b shown in FIG.

  According to the above configuration, in the state where the opening and closing member 66 is closed, the disconnecting portion 74 provided in each cover member 67 is interrupted by the relay portion 26 a in the space formed by the interrupting portion 65 of the relay portion 26. Since it is in the state which contact | connected the part 65 side surface and the interruption part 65 side surface of the relay part 26b, it can energize between the output part 24 and the input part 25, and the cover member 67 is rock | fluctuated with respect to this. When the opening / closing member 66 is opened, the disconnecting portion 74 provided in each cover member 67 is separated from the interrupting portion 65 of the relay portion 26, and the interrupting portion 65 side surface of the relay portion 26a and the interrupting portion 65 side surface of the relay portion 26b. Therefore, the output unit 24 and the input unit 25 can be disconnected from each other.

  Accordingly, for example, when the input part 25b is exchanged with the screw 63 of the terminal 51 as a wiring connection operation, and is attached or detached for loading, the terminal block 18 as a whole is in a state where a DC voltage is applied to each terminal. Even so, the cover member 67 is always swung in such a manner that the cover member 67 stands from the surface of the terminal block 18 and the opening / closing member 66 is opened, so that the power is disconnected between the output unit 24b and the input unit 25b. There is nothing to do.

  On the other hand, the cover member 67 constituting the opening / closing member 66 has a through hole 75 formed in the main wall portion 67a as shown in FIGS. 4B and 5 in this embodiment. The opening 75 is opposed to a portion other than the interruption portion 65 of the relay portion 26. As a result, since a measuring rod of a tester (not shown) can be inserted from the through hole 75 and brought into contact with the relay portion 26, the inspection can be performed without swinging the cover member 67.

  Finally, although the terminal block 18 according to the present invention has been described as being used for the input device 2 of the predetermined data transmission device 1, it is not necessarily limited thereto, and the primary side terminal portion 22 and the secondary side terminal are not necessarily limited thereto. It is used for all cases where an information communication device using the terminal block 18 having the portion 23 and other devices, where wiring connection work is required in a state where a DC voltage is applied to each terminal.

FIG. 1 is an explanatory diagram showing a schematic configuration of a data transmission device using a terminal device according to the present invention. FIG. 2 is an explanatory diagram showing a schematic configuration of an input device including the terminal device. FIG. 3 is an explanatory view showing a state in which the open / close member is closed, as viewed from the front, with respect to the secondary side terminal portion, the secondary side terminal portion, the relay portion, and the open / close member of the above terminal device. FIG. 4 (a) shows a state in which the open / close member is viewed from the side with respect to the secondary side terminal portion, the secondary side terminal portion, the relay portion, and the open / close member of the above terminal device. FIG. 4 (b) shows a side view of the secondary side terminal portion, secondary side terminal portion, relay portion, and opening / closing member of the above terminal device as viewed from the side with the opening / closing member closed. FIG. 4C is a side view of the secondary terminal portion, the secondary terminal portion, the relay portion, and the open / close member of the above terminal device as viewed from the side. It is explanatory drawing which showed. FIG. 5 is an explanatory diagram showing an open state and a closed state of the opening / closing member same as above.

Explanation of symbols

18 Terminal Block 22 Primary Side Terminal Portion 23 Secondary Side Terminal Portion 24 Output Portion 25 Input Portion 26 Relay Portion 44 to 49 Terminal 50 to 53 Terminal 65 Interruption Portion 66 Opening and Closing Member 74 Disconnecting Portion 75 Through Hole

Claims (1)

It has a primary side terminal part and a secondary side terminal part, one or more terminals which constitute an output part are arranged in the primary side terminal part, and an input part is provided in the secondary side terminal part. with one or more terminals that configuration is arranged, and a terminal that constitutes the input of the output unit and the terminal constituting the secondary-side terminal portion of said first primary-side terminal portion are connected by the relay unit Terminal block
The relay unit divides the relay unit into an output unit side relay unit and an input unit side relay unit, and an interruption unit is formed.
An open / close member that covers the secondary side terminal part of the primary side terminal part and the secondary side terminal part of the relay unit;
The opening / closing member is
By swinging to cover the secondary side terminal part and the input part side relay part, the terminal of the primary side terminal part and the secondary part are inserted into the interruption part of the relay part. By energizing between the terminals of the side terminal part and swinging to open the secondary side terminal part and the input part side relay part, away from the interrupting part of the relay part, A disconnecting portion for disconnecting power between the terminal of the primary side terminal portion and the terminal of the secondary side terminal portion ;
A cover member comprising a main wall facing the surface of the terminal block and a side wall extending from a peripheral edge of the main wall toward the surface of the terminal block, and an inspection instrument is provided on the main wall of the cover member A through hole with an inner diameter dimension that can be inserted through the linear portion is formed,
Further, the disconnecting portion is provided at the tip in the extending direction of the projecting portion made of an insulating material extending from the inner side surface of the cover member, and viewed from the side of the opening / closing member. While the side of the side is substantially trapezoidal larger than the side opposite to the terminal block side,
The relay unit is
The space formed by the interrupting portion has a substantially trapezoidal shape in which the side on the terminal block side is larger than the side opposite to the terminal block side when viewed from the side of the opening / closing member. Terminal block.

Images