JP2012053362A - Prototype kit for circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a prototype kit for circuits easily and accurately connecting between circuit elements, having a high selectivity of the circuit element, and improving packaging density of the circuit element.SOLUTION: A prototype kit 1 for circuits includes plug-in terminal blocks 3A to 3C and a circuit placement plate 2. The circuit placement plate 2 detachably carries the plug-in terminal blocks 3A to 3C at arbitrary positions on a flat principal surface at arbitrary angles. The plug-in terminal blocks 3A to 3C are disposed with a plurality of terminal slots (12) in which the respective terminals of the circuit elements and the like are freely inserted/extracted on the top surface, and formed with fine-line terminals 16 on the base, and solder fillet (15) for conducting between all the terminals of the circuit elements and the like inserted into the insertion slots (12).

Description

  The present invention relates to a circuit trial kit used for circuit trial production.

  For circuit design education and practice, a breadboard may be used to make a prototype circuit configuration. In a general breadboard, terminal connection portions are arranged in a matrix on the main surface of the board, and terminals such as circuit elements are detachable from each terminal connection portion. In addition, each terminal connection portion is configured to be conductive for each set of several terminal connection portions arranged in rows or columns, and by simply inserting a plurality of terminals into the terminal connection portion forming the set, the terminals are soldered between them. Can be connected without attaching. When prototyping a circuit using such a breadboard, the circuit elements are arranged on the breadboard in a manner similar to the circuit diagram, and the terminals of each circuit element are connected to the terminal connection portions forming a set, thereby providing a circuit. Connections between circuit elements in the figure are realized as much as possible. And the connection between the remaining circuit elements is implement | achieved by connecting between the terminal connection parts which comprise a different group with a jumper wire.

  When the circuit is prototyped in this way, the internal wiring of the breadboard cannot be directly visually recognized, so that connection errors between circuit elements and jumper wires are likely to occur. Especially when the connection of jumper wires becomes complicated, or when it is necessary to greatly change the arrangement of circuit elements from the circuit diagram, connection errors of each circuit element and jumper wires are very likely to occur. It has not been easy to accurately connect circuit elements.

  Therefore, a circuit trial kit that facilitates trial production of a circuit board has been proposed. For example, a prototype kit for educational use includes a plurality of blocks in which circuit elements and wiring patterns are componentized, and when each block is arranged on a circuit arrangement board, adjacent blocks are connected ( For example, refer nonpatent literature 1.). In addition, a circuit arrangement board and a small breadboard arranged on the circuit arrangement board, circuit elements are mounted on the small breadboard, and a plurality of small breadboards are connected by jumper wires. Yes (see, for example, Patent Document 1).

"Megachem Electrical Engineering Training Kit", [online], [Search August 18, 2010], Internet <URL: http://www.megachem.co.jp/Electricity%20and%20Electronics/Html/Locktronics. htm>

JP 2009-122638 A

  When a block in which circuit elements are componentized is used, circuit elements must be componentized in advance, and thus the selectivity of the circuit elements in the circuit prototype kit must be low. On the other hand, when a small breadboard is used, any circuit element can be connected to the small breadboard, and the selectivity of the circuit elements is high, but there are many terminal insertion openings that are not used by arranging the terminal insertion openings vertically and horizontally. Therefore, the mounting density of circuit elements is inevitably lowered.

  Accordingly, an object of the present invention is to provide a circuit prototype kit that facilitates accurate connection between circuit elements, has high selectivity of circuit elements, and can increase the mounting density of circuit elements.

The circuit prototype kit of the present invention includes a plug-in type terminal block and a circuit arrangement board. The plug-in type terminal block includes a holder that removably holds a plurality of terminals, and is configured such that all terminals inserted into the holder are electrically connected. The circuit arrangement board is configured to detachably carry the plug-in type terminal block at an arbitrary position on the flat main surface.
The holder holds a terminal of an arbitrary circuit element without requiring soldering. All terminals connected to a single plug-in type terminal block are conductive, and there is no set of terminal insertion ports that are not connected to terminals like a breadboard. The plug-in type terminal block is arranged at an arbitrary position on the circuit arrangement board.

In this configuration, it is preferable to arrange a plurality of terminal insertion holes into which each of the plurality of terminals can be inserted and removed on the top surface of the plug-in type terminal block, and to provide the holding tool in communication with the terminal insertion holes. .
Thereby, one terminal can be inserted into each terminal insertion port, and the reliability of terminal connection and the visibility of the terminal connection position are enhanced.

In this configuration, it is preferable that the projecting portion is formed on the bottom surface of the plug-in type terminal block, and the circuit arrangement board is made of a material that detachably supports the projecting portion.
Thereby, a plug-in type terminal block can be detachably carried by arbitrary arrangement to a circuit arrangement board. Also, the detachable structure can be made simple and lightweight.

In this configuration, it is preferable that the protruding portion is a terminal that conducts to the holder, and is configured to be detachable from a terminal insertion port provided in another plug-in type terminal block.
This makes it possible to connect other plug-in type terminal blocks by using the plug-in type terminal blocks themselves instead of jumper wires.

In this configuration, the plug-in type terminal block includes a notch forming portion having a locally small cross-sectional area perpendicular to the arrangement direction of the terminal insertion ports sandwiched between the plurality of terminal insertion ports and a plurality of projection portions. It is preferable to prepare for a position to be sandwiched.
As a result, the plug-in type terminal block can be divided and reduced in size at the notch forming portion, and the mounting density of circuit elements can be easily increased. Moreover, it becomes possible to provide a protrusion part and a terminal insertion port in the plug-in type terminal block after division, respectively, and it becomes possible to reuse each plug-in type terminal block after division.

  According to this invention, since the holder holds the terminal of an arbitrary circuit element without requiring soldering, the selectivity of the circuit element can be improved. All circuit elements mounted on a single plug-in terminal block will be conductive, there is no set of terminal insertion ports that are not connected to terminals like breadboards, and circuit arrangement of plug-in terminal blocks Since it can be arranged at any position on the board, the visibility of the connection structure can be made extremely high, and the mounting density of circuit elements can be increased.

It is a mimetic diagram explaining the example of composition of the circuit trial manufacture kit concerning the embodiment of the present invention. It is a perspective view of the 1st detailed structural example of an insertion-type terminal block. It is a figure explaining the example of circuit trial manufacture with the conventional breadboard and the circuit trial manufacture kit of FIG. It is a schematic diagram explaining the connection structural example of an insertion-type terminal block. It is a schematic diagram explaining the other structural example of an insertion-type terminal block. It is a bottom side perspective view of the 2nd detailed composition example of an insertion type terminal block. It is a figure explaining the 3rd detailed structural example and usage example of an insertion-type terminal block. It is a bottom side perspective view of the 4th detailed example of composition of an insertion type terminal block. It is a figure explaining the 5th detailed structural example of an insertion-type terminal block.

  Hereinafter, a configuration example of a circuit prototype kit according to the first embodiment of the present invention and a circuit board prototype example using the circuit prototype kit will be described.

FIG. 1 is a schematic diagram illustrating a configuration example of a circuit prototype kit 1 according to the present embodiment. The circuit prototype kit 1 includes a circuit arrangement board 2 and plug-in terminal blocks 3A, 3B, 3C. The circuit arrangement board 2 can hold the plug-in type terminal blocks 3A, 3B, 3C at arbitrary positions on a flat main surface at an arbitrary angle. For example, foamed urethane, foamed polystyrene, rubber, woven fabric, etc. will be described later. It is preferable that the main surface is made of a thin wire terminal that can be inserted and removed. The plug-in type terminal blocks 3A, 3B, 3C have a configuration in which a plurality of terminal insertion holes are arranged in a row on the top surface of the housing, and thin wire terminals are provided at positions facing the terminal insertion ports on both ends on the bottom surface of the housing. It is. The total number of terminal insertion ports is 15 for the plug-in type terminal block 3A, three for the plug-in type terminal block 3B, and five for the plug-in type terminal block 3C.
The circuit prototype kit 1 of this embodiment includes three types of plug-in terminal blocks 3A to 3C with different numbers of terminal insertion ports, but plug-in terminal blocks with a different number of terminal insertion ports. You may provide, and you may provide only one kind. There should be at least one type of plug-in terminal block.

  FIG. 2A is a top perspective view showing a specific configuration example of the plug-in terminal block 3A, and FIG. 2B is a bottom perspective view of the plug-in terminal block 3A. The plug-in type terminal blocks 3B and 3C can adopt the same configuration as the plug-in type terminal block 3A. In that case, the plug-in type terminal blocks 3B and 3C are only different from the configuration of the plug-in type terminal block 3A in terms of the number of terminal insertion ports and the like, and illustration and detailed description thereof are omitted here.

The plug-in type terminal block 3 </ b> A includes a housing 11, a conductor holder 13, a substrate portion 14, a solder fillet 15, and a thin wire terminal 16. The housing 11 has a substantially rectangular parallelepiped shape, and a plurality of notches 17 are formed on the side surface, and a plurality of terminal insertion ports 12 are formed on the top surface. Note that the notch 17 is not necessarily provided.
Each terminal insertion port 12 is arranged in a line at equal intervals, and communicates with a hole penetrating the inside of the housing 11 from the top surface to the bottom surface. Inside each hole, a conductor holder 13 for detachably holding a circuit element terminal and a jumper wire terminal is inserted. The conductor holder 13 is provided with an opening having a diameter substantially the same as the wire diameter of a terminal of a circuit element or the like on the top surface side, and an end portion on the bottom surface side is a thin line and protrudes from the bottom surface of the housing 11. The board portion 14 is formed with a hole into which the bottom end of each conductor holder 13 is inserted. The solder fillet 15 is provided on the bottom surface of the substrate portion 14 and is electrically connected to all the conductor holders 13 protruding to the bottom surface side of the substrate portion 14. The configuration for conducting between the conductor holders 13 is not limited to the solder fillet 15, and any other configuration may be employed.
In the conductor holders 13 at both ends of the array, the bottom side end is longer than the other conductor holders 13, and the portions protruding from the solder fillets 15 constitute the thin wire terminals 16. The thin wire terminal 16 corresponds to the protruding portion described in the claims, and is configured to be inserted into a terminal insertion port of another plug-in type terminal block.
Such a configuration can be adopted as the plug-in type terminal block 3A, and a terminal such as a circuit element is inserted into each terminal insertion port 12 one by one, thereby realizing reliable terminal connection and terminal connection. The improvement of the visibility of a position is realizable.

  FIG. 3 is a diagram for explaining a prototype of a circuit board using the circuit prototype kit 1 according to the present embodiment. FIG. 3A shows a circuit diagram to be prototyped, FIG. 3B shows a prototype example using a conventional breadboard, and FIG. 3C shows a prototype example using the circuit prototype kit 1 of this embodiment. Indicates.

  The circuit shown in FIG. 3A uses a non-stable multivibrator circuit to switch and blink the light emitting diode. This circuit includes resistors R1 to R4, capacitors C1 and C2, light emitting diodes LED1 and LED2, and transistors Tr1 and Tr2 as circuit elements.

  In the prototype example using the conventional breadboard 99 shown in FIG. 3 (B), the terminal insertion ports are arranged vertically and horizontally on the breadboard 99, and 10 terminal insertion ports are arranged in a row. They are conducted in pairs at the center. Here, the resistors R1 and R2, the capacitor C1, the light emitting diode LED1, and the transistors Tr1 are inserted into the left side terminal insertion ports, and the resistors R3 and R4, the capacitor C2, the light emitting diode LED2, and Each terminal of the transistor Tr2 is inserted into a terminal insertion opening forming a group on the right side of the row. The breadboard 99 is electrically connected by jumper wires 21 to 24 between the right and left groups in the row. Then, the circuit is connected to the battery via the power switch SW, and the circuit configuration shown in FIG.

In the prototype example using the circuit prototype kit 1 of this embodiment shown in FIG. 3C, two plug-in terminal blocks 3A, six plug-in terminal blocks 3B on the main surface of the circuit arrangement board 2, Four plug-in type terminal blocks 3C are provided. And each terminal of the same circuit element as the above-mentioned is inserted in the terminal insertion opening with which each of plug-in type terminal block 3A-3C is equipped, The said circuit is connected to a battery via power switch SW, FIG. The circuit configuration is as shown. Two jumper wires 31 and 32 are used for connection between the plug-in type terminal blocks 3A to 3C.
In this prototype, compared to the prototype in FIG. 3B, the number of jumper wires used is reduced and the jumper wires can be prevented from entering. In this prototype, the arrangement of the transistors Tr1 and Tr2 is closer to the circuit diagram of FIG. 3A, and the plug-in terminal blocks 3A to 3C function as part of the wiring. For this reason, the prototype of FIG. 3C as a whole has extremely excellent visibility of the connection structure between circuit elements.

Here, the arrangement angles of the plug-in type terminal blocks 3A to 3C are set to 0 degrees or 90 degrees with respect to the right direction in the figure, but the plug-in type terminal blocks 3A to 3C are arranged on the circuit arrangement board 2. Arrangement can be made at an arbitrary arrangement position and an arbitrary arrangement angle.
In addition, as the insertion / removal structure between the circuit arrangement board 2 and the plug-in type terminal blocks 3A to 3C, a thin wire terminal and a material capable of inserting / removing the thin wire terminal are adopted to make the insertion / removal structure simple and lightweight. However, as the insertion / removal structure, other structures such as a magnet structure and a hook-and-loop fastener structure can be used.

Next, a connection configuration example of the plug-in type terminal block provided in the circuit prototype kit 1 according to the present embodiment will be described. FIG. 4 is a schematic diagram for explaining a connection configuration example of the plug-in type terminal block.
FIG. 4A shows a usage example in which a plurality of plug-in type terminal blocks are adjacent to each other in parallel to have a wiring configuration similar to that of a small breadboard. In this case, it is possible to mount an IC chip or the like having a plurality of terminals by arranging two sets of plug-in type terminal blocks having a wiring configuration similar to that of a small breadboard at appropriate arrangement intervals. . Since the IC pitch is usually 2.54 mm, the width dimension of each plug-in terminal block is set so that the distance between the terminal insertion ports with the adjacent plug-in terminal block is 2.54 mm. Is preferred. In addition, since there is an IC pitch of 2.0 mm or the like, it is necessary to prepare a plug-in terminal block with a plurality of dimensions so that the terminal insertion port interval between adjacent plug-in terminal blocks is 2.0 mm or the like. Further preferred.

  Fig. 4 (B) shows an example of connection between two plug-in terminal blocks placed close together by inserting a thin wire terminal of another plug-in terminal block into the terminal insertion port of the plug-in terminal block. It is. In this case, it is not necessary to use a jumper wire, and the visibility of the wiring structure is increased. Further, a terminal such as a circuit element can be further inserted into the plug-in type terminal block arranged on the top surface side, and the wiring structure can be made three-dimensional.

  Next, another configuration example of the plug-in type terminal block provided in the circuit trial kit 1 will be described. FIG. 5 is a schematic diagram illustrating a configuration example of the plug-in type terminal block.

  The plug-in type terminal blocks 41A to 41C shown in FIG. 5A are configuration examples in which the thin wire terminals are provided not only on the two sides but also on the position facing the intermediate terminal insertion port. The plug-in type terminal block may have such a configuration.

  The plug-in type terminal blocks 42A and 42B shown in FIG. 5B have a configuration in which one of the terminal insertion ports has a different diameter from the other. By preparing such a configuration as a plug-in type terminal block, it becomes possible to mount a circuit element having a terminal having a wire diameter different from that of a normal one.

  The plug-in terminal blocks 43A and 43B shown in FIG. 5C have a configuration in which terminal insertion ports that are electrically connected to each other are provided in two rows instead of one row. The plug-in type terminal block may be configured in this manner, and any arrangement form of the terminal insertion ports may be used as long as at least all the terminal insertion ports are conductive.

  The configuration shown in FIG. 5D is a configuration in which a plurality of plug-in type terminal blocks 44A to 44C are connected in advance with lead wires. By preparing such a configuration, it is possible to reduce a user's trouble in connection work with a jumper wire.

  The plug-in type terminal block 45 shown in FIG. 5 (E) has a curved shape. The plug-in type terminal block 45 may be formed as a rigid body having a curved shape in advance, or may be formed of an elastic body and curved when used.

  In addition, you may comprise without connecting a thin wire terminal with a terminal insertion port, or you may comprise by a nonmetal. Moreover, you may employ | adopt other board | substrate connection structures, such as a magnet structure and a hook_and_loop | surface fastener structure, without providing a thin wire terminal. Further, if each plug-in type terminal block is divided into several different coloring groups, the user can use the coloring groups for each electrical role. The circuit arrangement board may be provided with a grid pattern or a dot pattern. Further, if a paper on which a component layout drawing is drawn can be pasted on a circuit layout board, it is possible to carry out trial production of a circuit.

  Next, a second detailed configuration example of the plug-in terminal block will be described. FIG. 6 is a bottom perspective view of the plug-in type terminal block 50. In addition, the top | upper surface side structure of the plug-in type terminal block 50 is the same as that of FIG.1 (B), A top surface side perspective view and the detailed description are abbreviate | omitted.

The plug-in terminal block 50 includes a housing 51, a conductor holder 53, a conductive metal wire 55, a solder fillet 54, and a thin wire terminal 56. The casing 51 has a substantially rectangular parallelepiped shape, is provided with a notch 57 on the side surface, a terminal insertion port (not shown) is formed on the top surface, and a conductor holder 53 is inserted inside each terminal insertion port. The conductor holder 53 has a thin line-like end on the bottom side and protrudes from the bottom surface of the casing 51. The conductive thin metal wire 55 is disposed on the side of the bottom side end of each conductor holder 53 and is soldered to each conductor holder 53 by a solder fillet 54. The configuration for conducting between the conductor holder 13 and the conductive metal wire 55 is not limited to the solder fillet 54, and any other configuration may be adopted.
The conductor holders 53 at both ends of the array have a bottom end on the bottom side longer than the other conductor holders 53, and portions protruding from the solder fillets 54 constitute thin wire terminals 56. The plug-in terminal block may have such a configuration.

  Next, a third detailed configuration example of the plug-in type terminal block will be described. FIG. 7A is a bottom perspective view of the plug-in type terminal block 60. Note that the top-side configuration of the plug-in type terminal block 60 is the same as that in FIG.

The plug-in type terminal block 60 includes a casing 61, a conductor holder 63, and a conductive wiring pattern 64. The casing 61 has a substantially rectangular parallelepiped shape, is provided with a notch 67 on the side surface, a terminal insertion port (not shown) is formed on the top surface, and a conductor holder 63 is inserted inside each terminal insertion port. The conductor holder 63 has a bottom end protruding from the bottom of the housing 61, and the bottom end is a thin line. The conductive wiring pattern 64 is printed on the bottom surface of the housing 61 and is electrically connected to each conductor holder 63 by a solder fillet or the like (not shown). Here, all the conductor holders 63 constitute thin wire terminals.
FIG. 7B is a bottom plan view of the plug-in type terminal block 60. The plug-in type terminal block 60 can be used in a reduced size by applying a bending load or a shearing load to the housing and dividing the cut-out portion 67 at the notch 67. Here, the notch portion 67 is provided in the housing 61 at a position between the conductor holders 63, so that a plurality of conductor holders 63 can be provided in each of the plug-in type terminal blocks after division. ing. Therefore, each of the plug-in type terminal blocks after the division can be used for trial production of the circuit board.

  Next, a fourth detailed configuration example of the plug-in terminal block will be described. 8A shows the configuration of the plug-in terminal block 70A provided with every other thin wire terminal, and FIG. 8B shows the configuration of the plug-in terminal block 70B provided with every other thin wire terminal. FIG. 8C shows the configuration of a plug-in terminal block 70C provided with every third thin wire terminal. The plug-in terminal block may be configured as described above.

  Next, a fifth detailed configuration example of the plug-in type terminal block will be described. FIG. 9A is a top perspective view of the plug-in terminal block 80, and FIG. 9B is a cross-sectional view of the plug-in terminal block 80. The plug-in terminal block 80 includes a frame 81 and a metal gripping tool 82. The frame 81 has a long shape with a U-shaped cross section. The metal gripping tool 82 includes a clip-shaped portion 82A and a thin wire terminal 82B. The clip-shaped portion 82A includes a gap portion 82C in which a metal flat plate is bent and both end portions are close to each other at a position away from the bottom surface portion, and the gap portion 82C can hold a plurality of terminals such as circuit elements at a time. . The thin wire terminal 82B protrudes from the bottom surface of the frame 81. The plug-in terminal block may have such a configuration.

  FIG. 9C is a cross-sectional view of the plug-in type terminal block 85. This plug-in type terminal block 85 includes a frame 86, a terminal portion 87, and a conductive filler 88. The frame 86 has an elongated shape with a rectangular cross section having a slit on the top surface. The terminal portion 87 protrudes from the bottom surface of the frame 86. The conductive filler 88 is provided so as to fill the inside of the frame 86 and has a cotton-like or net-like structure made of metal fibers or the like. The conductive filler 88 can hold a plurality of terminals such as circuit elements at a time. The plug-in terminal block may have such a configuration.

  The description of the above-described embodiment is an example in all respects and should be considered as not restrictive. The scope of the present invention is shown not by the above-described embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 1 ... Circuit prototype kit 2 ... Circuit arrangement board 3A, 3B, 3C ... Plug-in type terminal block 11 ... Housing | casing 12 ... Terminal insertion port 13 ... Conductor holder 14 ... Board | substrate part 15 ... Solder fillet 16 ... Fine wire terminal 31, 32 ... Jumper line

Claims (5)

A holding tool that removably holds a plurality of terminals, and at least one plug-in type terminal block configured to conduct between all the terminals inserted into the holding tool;
A circuit prototype kit comprising: a circuit arrangement board configured to detachably carry the plug-in type terminal block at an arbitrary position on a flat main surface.   The plug-in type terminal block has a configuration in which a plurality of terminal insertion holes into which each of the plurality of terminals can be inserted and removed are arranged on the top surface, and the holder is provided in communication with the terminal insertion port. The circuit prototype kit according to claim 1.   The circuit prototype according to claim 1, wherein the plug-in type terminal block has a configuration in which a protruding portion is formed on a bottom surface, and the circuit arrangement board is configured by a material that detachably supports the protruding portion. kit.   The circuit prototype kit according to claim 3, wherein the protruding portion is a terminal that conducts to the holder, and is detachable from the terminal insertion port provided in another plug-in type terminal block.   The plug-in type terminal block has a notch forming portion having a locally small cross-sectional area perpendicular to the arrangement direction of the terminal insertion ports sandwiched between the plurality of terminal insertion ports and a plurality of the projection portions. The circuit prototype kit according to claim 3 or 4, wherein the circuit prototype kit is provided at a sandwiched position.

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