JP5308771B2 - Terminal block and electronic equipment - Google Patents

Description

  The present invention relates to a terminal block and an electronic device including the terminal block.

2. Description of the Related Art Conventionally, electronic devices such as an inverter power supply device include an electronic circuit configured by various electronic components 101 and 102 such as bare chips and electrolytic capacitors as shown in FIG. 6 (see Patent Document 1). In this electronic apparatus, an electronic component 101 such as a bare chip that generates a large amount of heat is housed in a case 103 and is fixed in a state where an electrolytic capacitor (electronic component) 102 that is weak against heat is protruded to the outside of the case 103. ing.
The electronic device also includes connector portions 104 and 105 as wirings for electrically connecting the electronic circuit to the outside, and protrudes outside the case 103 in the same manner as the electrolytic capacitor 102.
JP 2007-281127 A

  However, in the above-described conventional electronic device, the electronic component 102 disposed outside the case 103 and the electronic circuit are electrically connected to each other, and the electronic circuit of the electronic device is electrically connected to the outside (connector portion 104, 105) are provided separately from each other, the electronic component 102 and the connector portions 104 and 105 must be projected to the outside of the case 103 from different locations. As a result, the electronic apparatus becomes large. There is a problem of end.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a terminal block that shares the two types of wiring described above, and to reduce the size of an electronic device including the terminal block.

In order to solve this problem, a terminal block according to the present invention is a terminal block that is fixed to the outside of a main unit containing an electronic circuit and includes external terminals that connect the electronic circuit to external wiring. A storage case, and a bent terminal plate that is formed in an L-shaped cross-section by bending a conductive plate material and is fixed to the storage case, and the electrode of the electronic component is externally attached to the storage case. The bent terminal plate has an electrical connection portion for electrical connection to an electrode of the electronic component and an internal terminal for connection to the electronic circuit, and is opposed to the opening portion. a first terminal plate portion arranged, and a second terminal plate portion disposed on an outer surface of the housing case while bent with respect to said external terminals form the first terminal plate, said second terminal Between the plate portion and the outer surface of the housing case. Includes a nut for fixing the external wiring, and the second terminal plate portion forming the external terminal is formed with a through hole that exposes the female screw portion of the nut to the outside. A plurality of the electronic components are accommodated in a row, and the bent terminal plates are provided in pairs so that the plurality of electronic components are electrically connected in parallel. The electrical connection portion is formed in a flat plate shape extending in the arrangement direction of the plurality of electronic components, and is disposed between the external terminal and the internal terminal, and a pair of the electrical connection portions are provided on the electrical connection portion. It is characterized by being arranged with a gap in the width direction .

  In the terminal block according to the present invention, the electric wiring for connecting the electronic component to the electronic circuit and the electric wiring for connecting the electronic circuit in the main unit to the external wiring are shared by the same bent terminal plate. ing. For this reason, it is possible to collect and provide the external terminals and electronic components arranged outside the main unit. Further, in this terminal block, since the bent terminal plate is arranged so as to be placed on the outer surface side of the housing case for housing the electronic component, the terminal block can be made small. As a result, only the compactly configured terminal block protrudes outside the main unit, and the electronic device configured by fixing the terminal block to the outer side of the main unit can be downsized.

Furthermore, in this terminal block, the external wiring can be screwed to the external terminal by inserting the bolt into the through hole of the second terminal plate portion and screwing it into the nut. And according to this terminal block, the nut can be easily fixed only by arranging the second terminal plate portion on the outer surface of the housing case so as to sandwich the nut, so the nut is fixed by resin sealing or the like. Compared to the case, a terminal block having a mechanism for screwing external wiring to an external terminal can be easily manufactured.

Moreover, in this terminal block, since the number of several electronic components electrically connected in parallel can be changed easily, it can be provided as a highly versatile terminal block.

Furthermore, in the terminal block, the pair of bent terminal plates may be integrally fixed with a sealing resin.
In this case, since the pair of bent terminal boards can be fixed together in the housing case, the number of steps for assembling the terminal block can be reduced, and the manufacturing efficiency can be improved.

The electronic device of the present invention includes the terminal block and the main unit in which the electronic circuit is incorporated, and the internal terminal is the electronic circuit in a state where the terminal block is fixed to the outside of the main unit. It is characterized by being electrically connected to.
According to this electronic apparatus, as described above, since it is provided with a compactly configured terminal block, it is possible to reduce the size thereof.

  According to the present invention, the electric wiring for connecting the electronic component to the electronic circuit and the electric wiring for connecting the electronic circuit to the external wiring constitute a terminal block shared by the same bent terminal plate, and Since this terminal block can be made small, it is possible to reduce the size of an electronic device including the terminal block.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 5, the terminal block 10 according to this embodiment constitutes the electronic apparatus 1 together with the main body unit 5 by being fixed to the outside of the main body unit 5 incorporating the electronic circuit. The main unit 5 is configured by housing a plurality of electronic components constituting an electronic circuit in a case, for example, as in the conventional case.
The terminal block 10 includes a housing case 11 for housing a plurality of electrolytic capacitors (electronic parts) 15 and a plurality of terminal plates 21 and 23 for connecting an electronic circuit of the main unit 5 to an external wiring by a sealing resin 25. The terminal board unit 13 is fixed to the terminal board unit 13.

The housing case 11 has a substantially rectangular parallelepiped appearance and is generally configured so that a plurality of electrolytic capacitors 15 can be housed in a row.
An opening 11c that opens the lead electrode (electrode) 15a of the electrolytic capacitor 15 to the outside is opened on the first outer surface 11a of the housing case 11 extending along the arrangement direction of the electrolytic capacitor 15. In the illustrated case 11, a plurality of openings 11c are formed, and a plurality of electrolytic capacitors 15 are exposed outward from the individual openings 11c. For example, a plurality of electrolytic capacitors 15 are exposed from one opening 11c. The lead electrode 15a of the capacitor 15 may face outward.
Further, the second outer surface 11b of the housing case 11 adjacent to the first outer surface 11a is formed to have a plurality of housing recesses 11d (five in the illustrated example) 11d for housing a part of the nut 19 for fixing the external wiring. The plurality of housing recesses 11 d are arranged along the direction in which the electrolytic capacitors 15 are arranged. In addition, the inner surface shape of each accommodation recessed part 11d is formed corresponding to the external shape (in the example of illustration, hexagonal shape) of the nut 19, and it is preventing that the nut 19 rotates within the accommodation recessed part 11d.

Further, the housing case 11 is provided with a mounting portion 31 for attaching the terminal plate unit 13 so that the terminal plate unit 13 is arranged over the first outer surface 11a and the second outer surface 11b.
The mounting portion 31 is U-shaped in a plan view surrounding a portion of the terminal plate unit 13 disposed on the first outer surface 11a and a pair of engaging projections 32 that regulate the mounting direction of the terminal plate unit 13 with respect to the housing case 11. The positioning projection 33 is formed.
The pair of engaging protrusions 32 are formed to extend perpendicularly from the second outer surface 11b located at both ends of the electrolytic capacitor 15 in the arrangement direction, and are arranged so as to face each other in the arrangement direction of the electrolytic capacitor 15. The positioning protrusion 33 is formed to protrude from the peripheral edge of the first outer surface 11a. In addition, the part which protrudes perpendicularly | vertically from the 2nd outer surface 11b among the positioning projection parts 33 is formed integrally with a pair of engaging protrusion 32 arranged near the 1st outer surface 11a side.

The terminal plate unit 13 includes a plurality of (three in the illustrated example) connection terminal plates 21 having only a function of connecting the electronic circuit of the main unit 5 to the external wiring, and an electrolytic capacitor in addition to the same function as the connection terminal plate 21. And a pair of bent terminal plates 23 having a function of connecting 15 to an electronic circuit. Each connection terminal plate 21 is formed by bending a conductive plate material, and is connected to an external terminal plate portion 27 serving as an external terminal for connecting to an external wiring and an electronic circuit of the main unit 5. The internal terminal board part 28 is provided.
The external terminal plate portion 27 is arranged on the second outer surface 11 b so that one nut 19 is disposed between the external terminal plate portion 27 and the second outer surface 11 b of the housing case 11. The external terminal plate 27 is formed with a through hole 27a that penetrates in the thickness direction and exposes the female screw portion of the nut 19 to the outside. And the internal terminal board part 28 protrudes perpendicularly | vertically toward the main body unit 5 side from the 1st outer surface 11a in the state which distribute | arranged the external terminal board part 27 mentioned above on the 2nd outer surface 11b.

The pair of bent terminal plates 23 are arranged with a gap so as to be electrically insulated from each other. Each bent terminal plate 23 is formed in an L-shaped cross-section by bending a conductive plate material, and is arranged on the first terminal plate portion 41 disposed on the first outer surface 11a and on the second outer surface 11b. The second terminal plate portion 42 is provided.
The first terminal plate 41 has a flat electrical connection 43 for electrical connection to the lead electrode 15 a of the electrolytic capacitor 15 and a flat internal terminal 44 for connection to the electronic circuit of the main unit 5. doing. The electrical connection portion 43 is formed to extend in the arrangement direction of the electrolytic capacitor 15 and includes a pair of extension portions 45 and 46 extending from both ends in the longitudinal direction along the first outer surface 11a toward the second outer surface 11b. And is formed in a U-shape in plan view as a whole.

The electrical connection portion 43 is disposed to face all the openings 11c. The electrical connection portion 43 is formed with a plurality of connection holes 47 for electrical connection to the lead electrodes 15 a of the plurality of electrolytic capacitors 15, and the plurality of connection holes 47 are arranged in the arrangement direction of the electrolytic capacitors 15. Has been.
Here, the pair of electrical connection portions 43 constituting the pair of bent terminal plates 23 are arranged so as to be parallel to each other on the first outer surface 11 a, and are connected to the plurality of connection holes 47 of the one electrical connection portion 43. The lead electrode 15a of either one of the positive electrode and the negative electrode of each electrolytic capacitor 15 is inserted. Further, the other lead electrode 15 a is inserted through the plurality of connection holes 47 of the other electrical connection portion 43. That is, in the terminal block 10, a plurality of electrolytic capacitors 15 are electrically connected in parallel by a pair of bent terminal plates 23.

  The internal terminal 44 is bent and connected to one extending portion 45 of the electrical connection portion 43, and, like the internal terminal plate portion 28 of the connection terminal plate 21, from the first outer surface 11 a to the main unit 5 side. It is arranged to protrude vertically toward The plurality of internal terminal plate portions 28 and the pair of internal terminals 44 are arranged in a line along the arrangement direction of the electrolytic capacitor 15, and the plurality of internal terminal plate portions 28 are disposed between the pair of internal terminals 44. Has been.

The second terminal plate portion 42 is bent and connected to the other extending portion 46 of the electrical connection portion 43 described above, and is connected to external wiring in the same manner as the external terminal plate portion 27 of the connection terminal plate 21. Has an external terminal for. The second terminal plate portion 42 is configured in the same manner as the external terminal plate portion 27.
That is, the second terminal plate portion 42 is disposed on the second outer surface 11 b so that one nut 19 is disposed between the second terminal plate portion 42 and the second outer surface 11 b of the housing case 11. Further, the second terminal plate portion 42 is formed with a through hole 42a that penetrates in the thickness direction and exposes the female screw portion of the nut 19 to the outside.
The plurality of external terminal plate portions 27 and the pair of second terminal plate portions 42 are arranged in a line along the arrangement direction of the electrolytic capacitor 15, and the plurality of external terminal plate portions 27 are a pair of second terminal plates. Arranged between the portions 42.

The sealing resin 25 constituting the terminal board unit 13 fixes the plurality of connection terminal boards 21 and the pair of bent terminal boards 23 so as to be electrically insulated from each other. The sealing resin 25 is generally formed in an L-shaped cross section so that the terminal board unit 13 can be disposed over the first outer surface 11a and the second outer surface 11b.
Although most of the plurality of connection terminal plates 21 and the pair of bent terminal plates 23 are embedded in the sealing resin 25, the internal terminal plate portions 28 and the internal terminals 44 protrude from the sealing resin 25. Further, the front surfaces of the external terminal plate portion 27 and the second terminal plate portion 42 facing in the same direction as the second outer surface 11b, and a part of the back surfaces of the external terminal plate portion 27 and the second terminal plate portion 42 facing the nut 19. Is exposed outward from the sealing resin 25. Further, the region where the connection hole 47 is formed in the electrical connection portion 43 and the vicinity thereof are also exposed outward from the sealing resin 25.

  Further, the sealing resin 25 is erected on the surface side of the external terminal plate portion 27 and the second terminal plate portion 42 exposed to the outside to separate the external terminal plate portion 27 and the second terminal plate portion 42. A plurality of partition wall portions 48 are formed. The plurality of partition wall portions 48 are arranged along the arrangement direction of the surfaces of the external terminal plate portion 27 and the second terminal plate portion 42, and uselessly touch the external terminal plate portion 27 and the second terminal plate portion 42. Thus, an electrical short circuit is prevented from occurring between the external terminal plate portions 27 and the second terminal plate portions 42 adjacent to each other.

Further, a pair of engaging grooves 49 that can engage with the pair of engaging protrusions 32 of the housing case 11 are formed at both ends of the sealing resin 25 in the arrangement direction of the external terminal plate portion 27 and the second terminal plate portion 42. Has been. The pair of engagement grooves 49 extend in the thickness direction of the external terminal plate portion 27 and the second terminal plate portion 42.

Next, an example of a method for assembling the terminal block 10 having the above configuration will be described.
When assembling the terminal block 10, for example, the electrolytic capacitor 15 may be disposed in the housing case 11 and the plurality of nuts 19 may be housed in the housing recesses 11 d, and then the terminal board unit 13 may be attached to the housing case 11. When the terminal board unit 13 is attached, the pair of engaging protrusions 32 are inserted into the pair of engaging grooves 49 so that the moving direction of the terminal board unit 13 with respect to the housing case 11 is changed. It can be regulated in the extending direction. In addition, the terminal plate unit 13 is positioned with respect to the housing case 11 by causing the distal end side in the mounting direction of the terminal plate unit 13 to abut on the positioning projection 33. Therefore, the terminal board unit 13 can be easily fixed to the housing case 11.
After the terminal board unit 13 is attached to the housing case 11, the lead electrodes 15a of the plurality of electrolytic capacitors 15 are individually inserted into the plurality of connection holes 47, and the lead electrodes 15a are electrically connected by soldering or welding. What is necessary is just to join to the part 43. Thus, the assembly of the terminal block 10 is completed.

When the external wiring is electrically connected to the external terminal plate portion 27 and the second terminal plate portion 42 in the terminal block 10, the bolts are inserted into the through holes 27 a and 42 a of the external terminal plate portion 27 and the second terminal plate portion 42. And may be screwed into the nut 19. As a result, the external wiring can be screwed to the external terminal plate portion 27 and the second terminal plate portion 42.
When the terminal block 10 configured as described above is fixed to the main unit 5, the plurality of internal terminal plate portions 28 and the internal terminals 44 protruding in the same direction are electrically connected to the electronic circuit of the main unit 5. Is done.

  As described above, in the terminal block 10 according to the above-described embodiment, the electrical wiring for connecting the electrolytic capacitor 15 to the electronic circuit of the main unit 5 and the electronic circuit in the main unit 5 are connected to the external wiring. Electric wiring is shared by the same bent terminal board 23. For this reason, it becomes possible to collect and provide the external terminal and the electrolytic capacitor 15 arranged outside the main unit 5. Further, in this terminal block 10, since the bent terminal plate 23 is disposed so as to extend over the outer surfaces 11 a and 11 b of the housing case 11 that houses the electrolytic capacitor 15, the terminal block 10 can be configured to be small. As a result, only the compactly configured terminal block 10 protrudes outside the main unit 5, and the electronic device 1 configured by fixing the terminal block 10 to the outside of the main unit 5 is reduced in size. be able to.

  Moreover, according to this terminal block 10, since the nut 19 can be easily fixed only by arrange | positioning the 2nd terminal board part 42 to the 2nd outer surface 11b of the storage case 11 so that the nut 19 may be inserted | pinched, a nut Compared with the case where 19 is fixed by resin sealing or the like, the terminal block 10 having a mechanism for screwing external wiring to the external terminal plate portion 27 or the second terminal plate portion 42 can be easily manufactured.

Further, in the terminal block 10, since the plurality of electrolytic capacitors 15 are electrically connected in parallel by the pair of bent terminal plates 23, it is possible to charge the plurality of electrolytic capacitors 15 equally (accumulate electric charge equally). . That is, it is possible to prevent the charge balance from being biased among the plurality of electrolytic capacitors 15.
Moreover, since the total capacity of the plurality of electrolytic capacitors 15 required in the electronic circuit of the main unit 5 can be easily adjusted simply by changing the number of electrolytic capacitors 15 connected in parallel, the terminal block 10 having high versatility can be obtained. It becomes possible to provide.

  Further, according to the terminal block 10, the plurality of connection terminal plates 21 and the pair of bent terminal plates 23 are integrally fixed by the sealing resin 25. Can be fixed together in the housing case 11. Therefore, the number of steps for assembling the terminal block 10 can be reduced, and the production efficiency can be improved.

As mentioned above, although one Embodiment of this invention was described, the technical scope of this invention is not limited to this, It can change suitably in the range which does not deviate from the technical idea of this invention.
For example, although a plurality of electrolytic capacitors 15 are provided in the terminal block 10 of the above embodiment, only one electrolytic capacitor 15 may be provided.
In addition, although the electrolytic capacitor 15 is provided in the housing case 11, the present invention is not limited to this, and it is sufficient that at least electronic components necessary for the electronic circuit of the main unit 5 are provided.

Further, the nut 19 is fixed at a predetermined position by attaching the terminal plate unit 13 to the housing case 11. However, the nut 19 may be integrally fixed to the housing case 11 or the terminal plate unit 13, for example.
Furthermore, although the terminal block 10 of the said embodiment was comprised combining the separate storage case 11 and the terminal board unit 13, it is not restricted to this, For example, several connection terminal board 21 and a pair of pair The bent terminal plate 23 may be individually fixed to the housing case 11. In addition, the terminal block may be configured by integrally forming the nut 19, the connection terminal plate 21, and the bent terminal plate 23 in the housing case 11, for example.
Moreover, although the terminal block 10 of the said embodiment was provided with the some connection terminal board 21 as what connects the electronic circuit of the main body unit 5 to an external wiring, it should just be provided only with the bending terminal board 23 at least.

It is a perspective view which shows the terminal block which is one Embodiment of this invention. It is a disassembled perspective view which shows the state which isolate | separated the terminal block of FIG. 1 into the storage case and the terminal board unit. In the terminal block of FIG. 1, it is the perspective view which permeate | transmitted sealing resin which comprises a terminal board unit. It is a top view which shows the state which looked at the terminal block of FIG. 1 from the upper direction of the 2nd outer surface 11b of a storage case. It is AA arrow sectional drawing of FIG. It is a perspective view which shows an example of the conventional electronic device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic device 5 Main body unit 10 Terminal block 11 Housing | casing case 11a 1st outer surface 11b 2nd outer surface 11c Opening part 15 Electrolytic capacitor (electronic component)
15a Lead electrode (electrode)
19 Nut 23 Bent terminal board 25 Sealing resin 41 First terminal board part 42 Second terminal board part (external terminal)
42a Through-hole 43 Electrical connection 44 Internal terminal

Claims (3)

A terminal block that is fixed to the outside of a main unit containing an electronic circuit and includes external terminals that connect the electronic circuit to external wiring,
A storage case for storing an electronic component, and a bent terminal plate that is formed in a L-shaped cross-section by bending a conductive plate and fixed to the storage case,
The housing case is formed with an opening for facing the electrode of the electronic component outward,
The bent terminal plate has an electrical connection portion for electrical connection to the electrode of the electronic component and an internal terminal for connection to the electronic circuit, and a first terminal plate portion disposed to face the opening, A second terminal plate part that is bent with respect to the first terminal plate part as the external terminal and disposed on the outer surface of the housing case ;
Between the second terminal plate portion and the outer surface of the housing case, a nut for fixing the external wiring is disposed,
In the second terminal plate portion that forms the external terminal, a through hole that exposes the female screw portion of the nut to the outside is formed,
In the storage case, a plurality of the electronic components are stored in a line,
A pair of the bent terminal plates are provided so that the plurality of electronic components are electrically connected in parallel,
The electrical connection portion of each bent terminal plate is formed in a flat plate shape extending in the arrangement direction of the plurality of electronic components, and is disposed between the external terminal and the internal terminal,
A terminal block , wherein the pair of electrical connection portions are arranged with a gap in the width direction of the electrical connection portion . The terminal block according to claim 1 , wherein the pair of bent terminal plates are integrally fixed by a sealing resin. The terminal block according to claim 1 or 2 , and the main body unit incorporating the electronic circuit,
An electronic apparatus, wherein the internal terminal is electrically connected to the electronic circuit in a state where the terminal block is fixed to the main unit.

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