JP3151308U - Terminal block - Google Patents

Abstract

Provided is a terminal block that can be made compact by reducing the lateral width and can obtain a large number of output terminals. A single conductive plate is formed in a step shape extending in the front-rear direction of a terminal block. The upward and downward staircase shapes are formed so as to be symmetrical in the front-rear direction across the central portion of the terminal block 1. Terminal portion 3 formed on the lower step surface 12a of the ascending step portion and terminal portion 3 formed on the upper step surface 13a, and terminal portion 3 formed on the upper step surface 13b of the descending step portion and terminals formed on the lower step surface 12b Each part 3 is provided in a staggered pattern. Since each terminal portion 3 is formed on the same conductive plate 2, it is electrically connected, and any one of the terminal portions 3 can be used as an input terminal and the remaining terminal portions 3 can be used as all output terminals. Further, the lateral direction of the terminal block can be made compact by extending the conductive plate 2 in the front-rear direction in order to obtain many output terminals. [Selection] Figure 1

Description

  The present invention relates to a terminal block having a plurality of connection terminals, and more particularly to a structure of a common terminal block to which each terminal is electrically connected.

  Conventionally, a general power supply circuit using a terminal block has been configured by combining general-purpose terminal block components. In order to use the power supply circuit as a terminal block for power distribution (common terminal block), for example, terminals are connected using a short bar for conduction. However, such a combination of general-purpose members has a drawback in that work efficiency is poor because of the large number of parts and assembly steps. Further, as the required number of terminals increases, the size of the terminal block also increases in the lateral direction in which the terminals are arranged, and there is a problem that the installation area of the terminal block increases in a circuit in which the terminal block is used. Therefore, a branch terminal block device capable of branching an input power source into a plurality of output power sources with a compact size is disclosed in Patent Document 1 shown below. According to this apparatus, at least one input terminal portion is provided on one or more terminal surfaces of a conductive metal fitting having a plurality of different terminal surfaces, and at least one output terminal is provided on each of two or more terminal surfaces. It has been. Thereby, the dimension of a horizontal direction can be set small and the size reduction of the whole apparatus can be achieved.

JP 2007-294333 A

  However, in the branch terminal block device of Patent Document 1, which terminal is used as the input terminal is determined in advance, and the degree of freedom of the terminal is low, and the cable connected to one side of the device is the input cable, the other side Since the number of output terminals is limited to the number of terminals on one side only, the number of output terminals cannot always be secured with a compact size.

  Therefore, the present invention has been made in view of such circumstances, and an object thereof is to provide a terminal block that can be made compact by reducing the lateral width and that can obtain a large number of output terminals. .

In order to solve the above-mentioned problem, the terminal block device according to claim 1 is configured such that terminal portions for connecting crimp terminals attached to electric wires are arranged in a plurality of rows, and arranged in rows in the front and rear steps. In the terminal block provided in a zigzag shape in which the terminal portions that are arranged are shifted by a half pole in the left and right direction respectively in the front row and the rear row,
A case made of an insulating housing;
One conductive plate formed in a shape in which the ascending step portion and the descending step portion are symmetrically continuous in the front-rear direction, and locked to the mounting position of the case;
A cover attached to cover the upper surface side of the case,
The terminal portion is provided on each step surface of the conductive plate, and all the terminal portions are electrically connected.

  A plurality of terminal portions are provided on each step surface of the conductive plate formed in a step shape. Since all the terminal parts are provided on the same conductive plate, they are electrically connected, and all the terminal parts have the same structure. Any terminal portion can be used as an input terminal, and in this case, all other terminal portions can be used as output terminals. The stepped step part is formed so that the up part and the down part are symmetrical in the front-rear direction of the terminal block, and a plurality of terminal parts are provided on each step surface, so that more terminal parts, that is, more A common output terminal can be obtained.

  Further, the electronic components arranged on the circuit board tend to be arranged in the horizontal direction because of the circuit configuration and the connection pattern formed on the board. In order to keep the area of the circuit board small, it is desirable to reduce the size of each component. In particular, it is desirable to keep the lateral width of the component small because of the tendency of the component arrangement. Therefore, in this terminal block, the stepped portion of the conductive plate extends in the front-rear direction of the terminal block, the terminal block is enlarged in the front-rear direction, and the width of the terminal block in the left-right direction is kept small to secure a large number of terminal portions. I did it.

  Further, the terminal block according to claim 2 is the device according to claim 1, wherein the step portion is formed in two steps, three on the lower step surface of the up step portion and two on the upper step surface. There are two terminal portions, two on the lower step surface and three terminal portions on the lower step surface, and the upper step surface and the upper step surface of the lower step portion are formed on the same surface. It is characterized by being.

  The step portions formed symmetrically in the front-rear direction of the terminal block are formed in a two-step shape of a lower step and an upper step. Three terminal portions are provided side by side on the front lower step surface and the rear lower step surface. On the upper surface (the upper surface of the ascending step portion and the upper surface of the descending step portion are common surfaces), two terminal portions are provided in two rows in the front and rear. Therefore, a total of ten terminal portions are provided on the conductive plate, and one of these terminal portions can be used as an input terminal and the other nine terminal portions can be used as common output terminals.

  The terminal block device according to claim 3 is the device according to claim 1 or 2, wherein the terminal portion is configured by screwing a terminal screw into a screw hole formed in the conductive plate. It is characterized by being.

  Further, the invention of the terminal block according to claim 4 is the invention according to any one of claims 1 to 3, wherein the ascending and descending step portions follow the length in the horizontal direction as the row direction. This is characterized in that the length of is longer. As a configuration in which the step portion formed on the conductive plate extends in the front-rear direction of the terminal block, the size of the terminal block is increased in the front-rear direction to increase the number of terminal portions formed on the conductive plate. As a result, the width of the terminal block in the left-right direction can be kept small, and the layout of the terminal block on the circuit board is facilitated.

  The terminal block according to claim 5 is characterized in that, in the device according to any one of claims 1 to 4, the length in the left-right direction is set to 25 mm or less.

  According to the terminal block according to the present invention, one conductive plate is formed in a step shape, and the up step portion and the down step portion are configured in the front-rear direction, and the terminal portion is provided on each step surface. Therefore, it is possible to secure a large number of terminal portions while keeping the lateral width of the terminal block small. Each terminal part has the same structure and is provided on the same conductive plate, so any one of the terminal parts can be arbitrarily selected as an input terminal, and the other terminal parts can be used as common output terminals. Can do. In order to secure a large number of terminal parts, the size of the terminal block was extended in the front-rear direction and the size in the left-right direction could be made compact, so the terminal block layout on the circuit board became easier and the circuit board was made more compact. Can be planned.

It is a perspective view which shows one form of the terminal block which concerns on this invention. It is a disassembled perspective view of the terminal block shown in FIG. It is a perspective view which shows the structure of the case and terminal plate of a terminal block. (A) is a top view of the terminal block shown in FIG. 1, (b) is a front view, (c) is a side view.

Hereinafter, an embodiment of a terminal block according to the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the terminal block T includes a case (main body) 1, a conductive plate 2, a terminal portion 3, a symbol plate 4, and a terminal cover 5.

  The case 1 is an insulating housing made of polycarbonate resin. Side walls 11a and 11b that protect the terminal portion 3 are erected on the left and right sides of the case 1, and the front and rear sides and the upper surface side of the case 1 are open. A connecting member such as a lead wire is connected to each terminal portion through the open portions on the front and rear sides.

  The conductive plate 2 is a conductive member made of brass (which has been plated with nickel). When the flat plate is attached to the case 1, the conductive plate 2 is bent and attached to the case 1. It is locked and fixed to the stop.

  FIG. 3 shows the relationship between the case 1 and the conductive plate 2. A support 16 for supporting both ends of the conductive plate 2 from the lower surface side is provided before and after the case 1 at the center of the case 1. Further, locking portions 18, 19, 20, 21, and 22 that lock the conductive plate 2 attached to the case 1 are provided inside the side walls 11 a and 11 b. The conductive plate 2 is in the state of a flat plate in which one step portion is not processed (it may be a flat plate state in which the step portions on both sides are not formed), and the lower surface of the support column 16 and the upper surfaces of the locking portions 18 and 19. Until the stepped portion 24 of the conductive plate 2 is engaged with the engaging portion 18a. After that, it is bent in a step shape by press work and fixed to a predetermined position of the case 1 by the respective locking portions 18 to 22 and the support portion 23 (FIGS. 1 and 2).

  The conductive plate 2 is formed in a plurality of steps. First, an ascending step is formed from the front side to the rear side of the terminal block T, and then further to the rear side with the central portion of the terminal block T as a boundary. A descending step portion is formed toward. The ascending stage part and the descending stage part are formed symmetrically in the front-rear direction across the central part. In the form shown in the figure, the step portion is formed in two steps, the lower step surface 12a and the upper step surface 13a constituting the up step portion from the front side (the lower side in FIG. 4A) of the terminal block T, and the down step step. An upper step surface 13b (which is on the same plane as the upper step surface 13a) and a lower step surface 12b constituting the portion are formed continuously and symmetrically in the front-rear direction. A plurality of terminal portions 3 are provided on each of the lower surface 12 and the upper surface 13 formed by processing the conductive plate 2. Since the conductive plate 2 is composed of a single plate, the terminal portions provided on the step surfaces 12 and 13 are electrically connected to each other. In addition, the number of step portions may be three steps or four steps. In this case as well, one conductive plate is bent and the up and down step portions are formed symmetrically in the front-rear direction.

  Each of the terminal portions 3 has the same structure, and includes a screw hole 14 formed in the conductive plate 2 and a terminal screw 15 screwed into the screw hole. For example, a crimp terminal attached to the end of the electric wire is connected to the terminal portion 3, but any one of the terminal portions can be used as an input terminal, and the remaining terminal portion is used as a common output terminal. be able to. Since each terminal part 3 has the same structure as described above, any terminal part 3 may be arbitrarily selected as an input terminal, and an input electric wire is connected from any direction before and after the terminal block T. Can do. Similarly, the output wire can be pulled out from either the front or back of the terminal block T.

  As provided on each step surface, the terminal portions 3 are arranged in a plurality of rows at different steps. The terminal portions arranged in the front and rear rows are located at the position of each terminal portion in the rear row with respect to the position of each terminal portion in the front row, only by the half phase (half pole portion) of the distance between adjacent terminal portions. They are arranged in a staggered pattern. In the form shown in the figure, the three terminal portions provided on the lower step surface 12a are disposed so as to be shifted from the two terminal portions provided on the upper step surface 13a by a half pole in the left-right direction. The two terminal portions provided on the upper step surface 13b are disposed so as to be shifted by a half pole in the left-right direction with respect to the three terminal portions provided on the lower step surface 12b. In addition, the terminal portions provided on the steps of the same height, that is, the terminal portions of the lower step surfaces 12a and 12b, and the terminal portions of the upper step surfaces 13a and 13b are arranged in the same phase. Accordingly, in this embodiment, a total of ten terminal portions 3 are formed, and nine inputs with one input can be obtained. However, since it is possible to connect two crimp terminals to each terminal portion, it is possible to obtain 19 inputs of 1 input when such connection is made. For example, an M3 × 6 screw can be used as the terminal screw 15 constituting the terminal portion 3, and a crimp terminal attached to the electric wire is screwed and connected between the conductive plate 2 and the terminal screw 15.

  The symbol plate 4 is a member made of vinyl chloride, covers the upper surface of the column 16 connected between the side walls 11a and 11b, and the end portion of the symbol plate 4 is attached to the mounting hole 17 formed in the side walls 11a and 11b. It is fitted and attached. A symbol or the like for identifying each terminal portion is displayed on the symbol plate 4.

  The terminal cover 5 is made of a transparent polycarbonate resin and is detachably attached to both side walls 11 a and 11 b of the case 1, and covers the opening on the upper surface side of the case 1 to protect the terminal portion 3. The symbol plate 4 is disposed between the lower surface of the terminal cover 5 and the upper surface of the support column 17. Since the terminal cover 5 is made of a transparent material, the connection state of the terminal portion 3 and the display content of the symbol plate 4 can be easily confirmed even when the cover is attached.

  A rail groove 32 for attaching a rail (a 35 mm DIN standard rail such as aluminum or steel) 31 is formed on the lower surface of the case 1 (FIG. 4C). The rail 31 is formed in a substantially U-shaped cross section, and a side wall edge protruding outward is engaged with the rail groove 32 of the case 1. The rail 31 is fixed in a circuit such as a control panel by screws through an attachment hole 33 formed at the bottom.

As described above, the number of the terminal portions 3 provided in the left-right direction of the terminal block T in this embodiment is a maximum of three (the number of terminal portions provided on the lower step surfaces 12a and 12b), and the terminal portions 3 provided in the front-rear direction. Is four (the number of end support portions provided in four rows of the lower step surface 12a, the upper step surface 13a, the upper step surface 13b, and the lower step surface 12b from the front side). In the terminal block T of the present application, the width of the terminal block is reduced by reducing the number of terminal portions provided in the left-right direction and increasing the number of terminal portions provided in the front-rear direction. The components used on the electronic circuit board are often arranged side by side as a general tendency. Therefore, in order to efficiently arrange the components and reduce the circuit board, it is desirable to reduce the size of the components in the lateral direction. In addition, there are many electronic components that are large in the vertical direction. To ensure a large number of terminal parts in the terminal block design, the vertical size of the terminal block is kept below the vertical size of other components. However, increasing the size in the vertical direction and reducing the size in the horizontal direction are very effective for reducing the size of the circuit board. Therefore, in the terminal block of the present application, the conductive plate formed in a staircase shape is configured so that the up and down steps are symmetrical in the front-rear direction, and the terminal block is extended in the vertical direction (front-rear direction) to reduce the size in the horizontal direction. Turned into. Specifically, for example, the size in the horizontal direction was suppressed to 25 mm, and the size in the vertical direction was set to 64 mm (size in a form in which the conductive plate shown in FIGS. 1 to 4 was processed into a two-stage shape). Although depending on the size (φ) of the terminal screw 15 constituting the terminal portion 3, the lateral size of the terminal block T can be suppressed to 25 mm or less.
The terminal block T is protected by the side walls 11a and 11b in the left-right direction of the terminal portion 3 and protected by the terminal cover 5 in the upper direction, and is an independent type terminal block that is not connected to other terminal blocks. Therefore, there is little risk of contact with surrounding electronic components and the like disposed on the circuit, and high safety can be ensured.

T terminal block 1 case (body)
2 Conductive plate 3 Terminal portion 4 Symbol plate 5 Terminal cover 11a, 11b Side wall 12a, 12b Lower step surface 13a, 13b Upper step surface 14 Screw hole 15 Terminal screw 16 Strut 18-22 Locking portion

Claims (5)

The terminal part that connects the crimp terminal attached to the wire is arranged in multiple rows with different steps, and the terminal parts arranged in the different rows in the front and back are shifted by half poles in the left and right direction in the front row and the rear row, respectively. In the terminal block provided in a staggered pattern,
A case made of an insulating housing;
One conductive plate formed in a shape in which the ascending step portion and the descending step portion are symmetrically continuous in the front-rear direction, and locked to the mounting position of the case;
A cover attached to cover the upper surface side of the case,
The terminal block is provided on each step surface of the conductive plate, and all the terminal portions are electrically connected.   The step portion is formed in two steps. Three terminal portions are provided on the lower step surface of the up step portion, and two terminal portions are provided on the upper step surface. Two terminal portions are provided on the upper step surface of the down step portion and on the lower step surface. The terminal block according to claim 1, wherein three terminal portions are provided, and an upper surface of the ascending step portion and a descending step portion are formed on the same surface.   The terminal block according to claim 1 or 2, wherein the terminal portion is configured by screwing a terminal screw into a screw hole formed in the conductive plate.   4. The length in the front-rear direction in which the up and down stepped portions continue is longer than the length in the left-right direction that is the row direction. 5. Terminal block.   The terminal block according to any one of claims 1 to 4, wherein the length in the left-right direction is set to 25 mm or less.