JP5942123B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box in which a printed board is accommodated in a case, and more particularly to an electrical junction box to which electrical components are connected from the side of the case.

  2. Description of the Related Art Conventionally, an electrical connection box is known in which a printed board is accommodated in a case, and a board terminal provided on the printed board can be connected to an electrical component such as a fuse. In particular, in recent years, with the demand for increasing the space efficiency and density of the electrical junction box, the side of the electrical junction box is provided with a side component connecting portion having a plurality of electrical component mounting portions that open to the side. It has been known. For example, it is the thing of Unexamined-Japanese-Patent No. 2010-187458 (patent document 1).

  In such an electrical junction box, as shown in FIG. 5 of Patent Document 1, a plurality of board terminals erected with one end soldered to a printed board are bent at an intermediate part. As a result, the connection parts provided at the other end part are arranged in parallel in the width direction of the side part connection part, and are arranged in a plurality of layers with a gap in the height direction of the side part connection part. In the state, it is accommodated and arranged in the electric component mounting portion of the side component connecting portion. Thereby, from the side of the electrical connection box, an electrical component such as a fuse can be mounted on the electrical component mounting portion of the side component connecting portion so that the electrical component is conducted to the printed circuit board via the board terminal. It has become.

  By the way, when an electrical component is mounted on or removed from the electrical component mounting portion from the side of the case, it is larger in a direction perpendicular to the standing direction of the board terminal than the board terminal standing on the printed board. Insertion / extraction force is applied. In view of this, the present applicant provides a concave or convex engaging portion on both side edges of a region extending from the bent portion to the connecting portion of each substrate terminal in Patent Document 1, while being disposed between adjacent substrate terminals. Proposed a structure in which a plurality of support pins are projected from a terminal holding member arranged below the side part connection part, and the engagement part of each board terminal is engaged with the support pin in the input direction of the insertion / extraction force did. According to this, since the insertion / extraction force exerted on the board terminal at the time of insertion / extraction of the electric component to / from the electric component mounting portion is supported by the support pin, the insertion / extraction force is directly exerted on the soldering portion of the board terminal, thereby causing the solder crack. It is possible to advantageously prevent problems that occur.

  However, in such an electrical junction box having a conventional structure, when it is desired to increase the number of electrical component mounting portions provided in the side component connection portion, there is a concern that the manufacturability and durability may be deteriorated. That is, as a measure for enabling mounting of more electrical components on the electrical component mounting portion that opens to the side, a method of increasing the number of stages when the connection portions of the plurality of board terminals are arranged in a plurality of layers is considered. It is done. However, as the number of board terminals arranged in a stacked manner increases, the protrusion height of the support pin from the terminal holding member needs to be increased. In that case, it is difficult to ensure sufficient dimensional accuracy at the time of molding the elongated support pin, and there is a possibility that the support pin cannot be engaged with the concave or convex engaging portion provided on the substrate terminal.

  Also, if the protruding height of the support pins becomes too high, for each of a plurality of substrate terminals stacked in multiple stages, each support pin is sequentially inserted between adjacent substrate terminals, and each substrate terminal has a concave or convex shape. The operation of engaging with the engaging portion becomes very difficult and the productivity is deteriorated. In addition, if the protrusion height becomes too high, the possibility that the support pin breaks and breaks during transportation or operation increases. Further, when the insertion / extraction force is input to the support pin, there is a problem that a large rotational moment is generated at the base end portion of the support pin and the durability of the support pin is deteriorated.

JP 2010-187458 A

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that the connection stability and durability are advantageously improved without accompanying deterioration of dimensional accuracy and difficulty of work, An object of the present invention is to provide an electrical junction box having a novel structure capable of increasing the number of electrical component mounting portions opened on the side surface.

A first aspect of the present invention includes a printed circuit board housed in a case, and a side component connecting portion including a plurality of electrical component mounting portions that are provided on a side surface of the case and open to the side. The side component connecting portion is configured to include a plurality of board terminals that are erected by soldering one end of the printed circuit board and provided with a connecting portion at the other end. The connection portion of the plurality of substrate terminals is an electrical connection box accommodated and disposed in the electrical component mounting portion in a state where the connection portions are stacked in a plurality of stages with a gap in the standing direction of the substrate terminal. The side component connecting portion includes a first support pin extending from one end to the other end in the standing direction and engaging with an engaging portion provided on the board terminal, and the first support Extending in the opposite direction to the pin and engaging with the engaging portion A support pin is housed and disposed, and the engagement portion provided on the board terminal engages with at least one of the first support pin and the second support pin, whereby the electrical component applied to the board terminal A load in the insertion / extraction direction to / from the connecting portion is supported, and the protruding end of the first support pin and the protruding end of the second support pin are separated from each other in the standing direction; By adopting at least one of the configurations in which only one of the first support pin and the second support pin is formed, the first support pin and the second support pin are both engaged. It is characterized in that at least one connection terminal which is not provided is arranged in the side part connection part .

  In the electrical junction box having the structure according to the present invention, the engagement portion of the plurality of board terminals arranged in layers is engaged with either one of the first support pin and the second support pin, so that the board is separated from the electrical component. The board terminal can be supported by the first support pin or the second support pin against the insertion / extraction force exerted on the terminal. And according to this invention, the support pin engaged with a board | substrate terminal is the 1st support pin arrange | positioned by one side of the side component connection part in the standing direction of a board | substrate terminal, and the 2nd arrange | positioned by the other. As a support pin, it is divided on both sides of the side part connecting portion. As a result, even when the height of the side part connecting portion increases due to an increase in the number of poles, the extension dimension of the first support pin and the extension dimension of the second support pin can be kept small. The dimensional accuracy of the pin and the second support pin can be improved. As a result, it is possible to more easily assemble the first support pin and the second support pin with respect to the board terminal with high accuracy and align with the engaging portion of the board terminal. Further, the substrate terminal can be supported more stably, and the connection stability at the soldered portion of the substrate terminal can be achieved.

  Furthermore, since the projecting dimensions of the first support pin and the second support pin are kept small, the strength of both support pins can be ensured. Thereby, a possibility that a support pin may break during transportation or an assembly operation can be reduced. In addition, the rotational moment applied to the base end portion of the support pin when an electric component insertion / extraction force is exerted on the support pin can be reduced, and the durability of the support pin can be improved.

  Moreover, the extension dimensions of the first support pin and the second support pin can be set arbitrarily. Therefore, for example, it is possible to form an electrical component mounting portion in which the first support pin and the second support pin are not disposed in the side component connecting portion, and the design freedom of the layout of the electrical component mounting portion in the side component connecting portion is possible. The degree can be improved.

Furthermore, in this aspect , for example, the first support pin and the second support pin are disposed between a plurality of fuse mounting portions that are arranged in multiple layers and in which the first support pin or the second support pin is disposed. In addition, it is possible to provide a fuse mounting part and connector mounting part of a circuit system independent of those fuse mounting parts, and to improve the design freedom of the layout of the electrical part mounting part in the side part connection part I can do it.

According to a second aspect of the present invention, in the above-described first aspect, the side component connecting portion includes the electric component housing provided with the plurality of electric component mounting portions, and the electric component housing in the standing direction. A first terminal holding member disposed on one side of the component housing; and a second terminal holding member disposed on the other side of the electrical component housing, wherein the first terminal holding member includes the first terminal holding member. While the support pin protrudes, the second support pin protrudes from the second terminal holding member.

  According to this aspect, the first support pin and the second support pin can be protruded and fixedly supported by the first terminal holding member and the second terminal holding member serving as a pedestal. Therefore, the rigidity of both support pins can be advantageously ensured, and the operation of accommodating and arranging the first support pins and the second support pins in the electrical component housing having the electrical component mounting portion can be efficiently performed. it can.

  In the present invention, the side component connecting portion accommodates and arranges the first support pin extending from one side to the other side in the standing direction of the substrate terminal and the second support pin extending in the direction opposite to the first support pin. And the engaging part of the board | substrate terminal accommodated by the side component connection part was made to engage with at least one of a 1st support pin and a 2nd support pin. Thereby, the extension dimension of a 1st support pin and a 2nd support pin can be suppressed, and the dimensional accuracy of a 1st support pin and a 2nd support pin can be improved. As a result, even when the number of electrical component mounting portions in the side component connecting portion is increased, excellent assembly workability can be ensured and positioning accuracy with respect to the board terminal can be ensured. Accordingly, the first support pin and the second support pin can be stably engaged with the substrate terminal to obtain an effective support force. Furthermore, since the extension dimension of the first support pin and the second support pin can be suppressed, the durability of both the support pins can be improved.

The disassembled perspective view of the electrical-connection box as one Embodiment of this invention. The disassembled perspective view of the fuse module which comprises the electrical-connection box shown in FIG. FIG. 3 is an exploded perspective view of the fuse module shown in FIG. 2 in a direction different from that in FIG. 2. FIG. 3 is a top view of the fuse module shown in FIG. 2. VV sectional drawing in FIG. VI-VI sectional drawing in FIG. VII-VII sectional drawing in FIG. The perspective view of the board | substrate terminal which comprises the fuse module shown in FIG. Sectional explanatory drawing for demonstrating the different aspect of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, FIG. 1 shows an electrical junction box 10 as an embodiment of the present invention. The electrical connection box 10 has a structure in which a first printed circuit board 18, a second printed circuit board 20, and a fuse module 22 serving as a side component connecting part are accommodated in a case 16 including an upper case 12 and a lower case 14. . In the following description, “upper” means the upper case 12 side, and “lower” means the lower case 14 side.

  The upper case 12 is made of a synthetic resin and has a substantially rectangular box shape that opens to the lower case 14 side. The upper case 12 is formed with attachment portions 24 to the vehicle body at appropriate multiple locations. Engagement protrusions 26 are formed at appropriate multiple locations on the outer surface of the upper case 12. On the other hand, the lower case 14 is formed of a synthetic resin and has a substantially rectangular box shape opening to the upper case 12 side. In the lower case 14, an engagement piece 28 is formed at a position corresponding to the engagement protrusion 26 of the upper case 12. The upper case 12 and the lower case 14 are overlapped with each other, and the engagement protrusion 26 and the engagement piece 28 are engaged with each other, whereby a hollow case 16 is formed.

  The first printed circuit board 18 and the second printed circuit board 20 have a substantially rectangular plate shape. The first printed circuit board 18 is sized to cover substantially the entire opening of the lower case 14. The first printed circuit board 18 is provided with a side connector mounting portion 30 that opens to the side perpendicular to the vertical direction in which the upper case 12 and the lower case 14 face each other. On the other hand, the second printed circuit board 20 is smaller than the first printed circuit board 18. The second printed circuit board 20 is provided with an external connection connector 32 protruding upward. The external connection connector 32 protrudes to the outside of the case 16 through a through hole (not shown) formed in the upper case 12 and is attached to a concave module attachment portion 34 formed on the outer surface of the upper case 12 (not shown). For example, it is connected to electrical components such as an ECU unit. The second printed circuit board 20 is disposed above the first printed circuit board 18 via a synthetic resin intermediate pedestal 36 with a gap therebetween, and the second printed circuit board 20 is connected to the second printed circuit board 20 using, for example, an inter-board connection terminal or a bus bar (not shown). One printed circuit board 18 is electrically connected. However, the first printed circuit board 18 and the second printed circuit board 20 are not limited to those that are electrically connected to each other.

  A fuse module 22 is provided on the first printed circuit board 18. The fuse module 22 is shown in FIGS. The fuse module 22 includes an electrical component housing 38, a plurality of board terminals 40 and bus bars 42, a first terminal holding member 44, a second terminal holding member 46, and the like.

  The electric component housing 38 has a substantially longitudinal rectangular block shape made of synthetic resin. The electrical component housing 38 is formed with a fuse mounting portion 48 as an electrical component mounting portion, a fusible link mounting portion 50, and the like. The fuse mounting portion 48 and the fusible link mounting portion 50 have a concave shape that opens to the side surface of the electrical component housing 38. Further, the fuse mounting portion 48 and the fusible link mounting portion 50 are formed in alignment in the width direction (vertical direction in FIG. 4) and height direction (vertical direction in FIG. 5) of the electrical component housing 38. In the embodiment, the fuse mounting portion 48 is formed by stacking up to four stages in the height direction of the electrical component housing 38.

  Furthermore, a first support pin insertion hole 52 and a second support pin insertion hole 54 are formed in the electrical component housing 38. The first support pin insertion hole 52 and the second support pin insertion hole 54 are formed so as to penetrate the electrical component housing 38 in the height direction, and in the width direction of the electrical component housing 38 (vertical direction in FIG. 4). It is formed between adjacent fuse mounting portions 48, 48 and through the central portion of the fusible link mounting portion 50. The lengths of the first support pin insertion hole 52 and the second support pin insertion hole 54 in the height direction of the electrical component housing 38 can be arbitrarily set including 0, for example, FIG. In the position shown in FIG. 7, the first support pin insertion hole 52 and the second support pin insertion hole 54 are formed on the same straight line, and the first support pin insertion hole 52 is connected to the two-stage fuse mounting portion 48. The second support pin insertion hole 54 has a dimension over the upper half of the first stage fuse mounting part 48 and the lower stage fuse mounting part 48, while the upper half fuse mounting part 48 has a dimension over the lower half. Is formed. On the other hand, in the position shown in FIG. 6, the length dimension of the first support pin insertion hole 52 is 0, and only the second support pin insertion hole 54 is formed. It is formed with a dimension extending only to the uppermost fuse mounting portion 48. Further, as apparent from FIG. 6, the first support pin insertion hole 52 and the second support pin insertion hole 54 do not have to be formed at the same position in the width direction of the electric component housing 38, and the electric component housing 38. Only one of them may be formed at a predetermined position in the width direction. Even when both the first support pin insertion hole 52 and the second support pin insertion hole 54 are formed at predetermined positions in the width direction of the electrical component housing 38, the first support pin insertion hole 52 and the second support pin The insertion holes 54 do not have to be formed on the same straight line.

  A plurality of board terminals 40 are assembled to the electrical component housing 38. As shown in FIG. 8, the board terminal 40 has an L shape having a bent portion 56 that is punched out of a metal plate and bent at a right angle. A soldering portion 58 is formed at one end of the substrate terminal 40 and is soldered by being inserted into the through hole of the first printed circuit board 18, and a fuse substrate (not shown) is formed at the other end. A tuning fork terminal 62 is formed as a connection portion formed by facing a pair of press contact blades 60, 60 sandwiching the terminal. Furthermore, notched engaging portions 64 and 64 that enter the inside of the board terminal 40 are formed at both end edges between the tuning fork terminal 62 and the bent portion 56. As such a substrate terminal 40, a plurality of types are used in which the length dimension from the bent portion 56 to the soldering portion 58 is different from each other.

  In addition, a plurality of bus bars 42 are assembled to the electrical component housing 38. The bus bar 42 is formed by punching a metal plate. Although not shown in detail, the ends of the bus bars 42 have the same shape as that of the board terminal 40 at a position disposed inside the fuse mounting portion 48, for example, as shown in FIG. Like the tuning fork terminal 62 and the like, a connection portion having a shape corresponding to the electrical component mounted on the electrical component mounting portion is formed. Further, as shown in FIG. 3, a connector mounting portion 66 as an electrical component mounting portion is formed at one end in the width direction of the electrical component housing 38, and is disposed in the connector mounting portion 66. A flat tab terminal 68 is formed at the end of the bus bar 42. In the bus bar 42, engagement portions 64, 64 similar to those of the board terminal 40 are formed at a portion where the tuning fork terminal 62 is formed.

  On the other hand, the first terminal holding member 44 is made of synthetic resin and has a maximum width dimension (vertical dimension in FIG. 4) substantially equal to the electrical component housing 38 and a predetermined length dimension (left and right in FIG. 4). It has a substantially rectangular shape as a whole having a directional dimension. As is clear from FIGS. 2 and 3, a plurality of first support pins 70 projecting upward are provided at the end edge portion of the first terminal holding member 44, and the first support pin insertion holes of the electrical component housing 38. Corresponding to 52, the first terminal holding member 44 is formed at an appropriate interval in the width direction (vertical direction in FIG. 4). The first support pin 70 extends upward with a substantially rectangular cross section, and extends in the extending direction of the first support pin 70 on both surfaces that are orthogonal to the parallel direction of the plurality of first support pins 70. A pair of partition ribs 72, 72 are formed. The first terminal holding member 44 is provided with a plurality of terminal insertion holes 74. Furthermore, the first terminal holding member 44 may be appropriately formed with a relay mounting portion 76, a bus bar mounting portion 78, and the like as necessary.

  The second terminal holding member 46 is made of a synthetic resin and has a substantially longitudinal rectangular plate shape having a size substantially equal to the upper surface of the electrical component housing 38. A plurality of second support pins 80 projecting downward from the second terminal holding member 46 correspond to the second support pin insertion holes 54 of the electrical component housing 38 in the length direction of the second terminal holding member 46 ( In FIG. 4, it is formed at an appropriate interval in the vertical direction). The second support pins 80 are also formed with partition ribs 72 similar to the first support pins 70.

  When assembling the fuse module 22, first, the board terminal 40 and the bus bar 42 are inserted from the rear of the electrical component housing 38 (left side in FIG. 5), and the tuning fork terminal formed on the board terminal 40 and the bus bar 42. 62, the tab terminal 68, and the like are accommodated in the corresponding fuse mounting portion 48, fusible link mounting portion 50, connector mounting portion 66, and the like. Thereby, the tuning fork terminal 62 and the tab terminal 68 of the board terminal 40 and the bus bar 42 are arranged in parallel in the width direction of the electric component housing 38 (vertical direction in FIG. 4), and the height direction of the electric component housing 38 ( In FIG. 5, they are stacked in the vertical direction. Next, as shown in FIG. 3, the electrical component housing 38 into which the board terminals 40 and the bus bars 42 are inserted is approached from above the first terminal holding member 44, and each first support pin of the electrical component housing 38 is inserted. The corresponding first support pin 70 of the first terminal holding member 44 is inserted into the hole 52. At this time, since the plurality of first support pins 70 are integrally protruded from the first terminal holding member 44, the mounting operation of the first support pins 70 to the electrical component housing 38 can be efficiently performed. it can. The board terminal 40 and the soldering portion 58 of the bus bar 42 protruding rearward of the electrical component housing 38 are inserted into the terminal insertion holes 74 of the first terminal holding member 44 and protrude below the first terminal holding member 44. Is done. Subsequently, the second terminal holding member 46 is overlapped from above the electrical component housing 38, and the second support pin corresponding to the second terminal holding member 46 is inserted into each second support pin insertion hole 54 of the electrical component housing 38. 80 is inserted. At this time, since the plurality of second support pins 80 project integrally with the second terminal holding member 46, the mounting operation of the second support pins 80 to the electrical component housing 38 can be performed efficiently. it can. The first terminal holding member 44 and the second terminal holding member 46 are preferably fixed with respect to the electrical component housing 38. For example, an appropriate engagement mechanism is provided to lock and engage each other, It is preferable to form a joint portion and fit the concave or convex, or to fix by screwing or adhesion. In this way, the strength of the first terminal holding member 44 and the second terminal holding member 46 can be improved, and the support strength of the board terminal 40 by the first support pin 70 and the second support pin 80 described later can be increased. Can be improved.

  As a result, for example, as shown in FIG. 5, in the vertical direction (vertical direction in FIG. 5), which is the standing direction of the board terminal 40 on the first printed circuit board 18 to be described later, below the electrical component housing 38. The first terminal holding member 44 is disposed on the upper side, and the second terminal holding member 46 is disposed on the upper side. The first support pins 70 extend upward from below the fuse module 22, and the second support pins 80 extend downward from above the fuse module 22. Further, the first support pin 70 and the second support pin 80 are disposed between the engaging portions 64 and 64 (only one is shown in FIG. 5) of the tuning fork terminals 62 and 62 adjacent in the width direction of the electrical component housing 38. Thus, the board terminals 40 and the bus bars 42 are positioned and held by being engaged with the engaging portions 64 and 64. Particularly in the present embodiment, partition ribs 72 and 72 are formed on the first support pin 70 and the second support pin 80, and the partition ribs 72 and 72 are interposed between adjacent tuning fork terminals 62 and 62. The possibility that the adjacent tuning fork terminals 62 and 62 are short-circuited is reduced.

  As shown in FIG. 1, such a fuse module 22 is overlaid on the outer peripheral portion of the first printed circuit board 18, and the soldering portions 58 of the respective board terminals 40 and bus bars 42 pass through the first printed circuit board 18. It is inserted into the hole and soldered. Further, the first terminal holding member 44 is bolted to the first printed circuit board 18 at an appropriate location (not shown). Thereby, the board terminal 40 is erected on the first printed circuit board 18 in the vertical direction, and the fuse module 22 has the first vertical direction in which the height direction of the electrical component housing 38 is the erection direction of the board terminal 40. It is fixed to the printed circuit board 18.

  Then, the second printed circuit board 20 is disposed on the first printed circuit board 18 through the intermediate pedestal 36, and if necessary, inter-board connection terminals and bus bars (not shown) are soldered to be fixed to each other. . Subsequently, the first printed circuit board 18 and the second printed circuit board 20 are accommodated between the lower case 14 and the upper case 12, and the lower case 14 and the upper case 12 are assembled to each other, whereby a fuse as a side component connecting portion is obtained. The module 22 is accommodated in the case 16. When housed in the case 16, the electrical component housing 38 of the fuse module 22 is disposed on the side surface of the case 16, and the fuse mounting portion 48, the fusible link mounting portion 50, and the connector mounting portion provided on the electrical component housing 38. An electrical component mounting portion such as 66 is opened to the side of the case 16.

  Such an electrical junction box 10 is attached to, for example, a vehicle body panel of an automobile via an attachment portion 24 and is disposed in an engine room or the like. Then, fuses, fusible links, and connectors as electrical components (not shown) are connected to the fuse mounting portion 48, the fusible link mounting portion 50, the connector mounting portion 66, and the like that are opened to the side of the case 16, respectively.

  According to the electrical connection box 10 of the present embodiment, for example, when a fuse is inserted into or removed from the fuse mounting portion 48, a force in the pushing direction or a force in the pulling direction is exerted on the board terminal 40 of the fuse mounting portion 48 from the fuse. In this case, at least one of the first support pin 70 and the second support pin 80 is engaged with the engaging portion 64 of the substrate terminal 40, whereby the substrate terminal 40 is supported. As a result, the fuse can be inserted and removed more easily and stably.

  In particular, in the present embodiment, the support pins that support the board terminals 40 are divided above and below the first support pins 70 and the second support pins 80. Thereby, the extension dimension from the 1st terminal holding member 44 of the 1st support pin 70 and the extension dimension from the 2nd terminal holding member 46 of the 2nd support pin 80 can be restrained small, respectively, and dimensional accuracy is improved. Can be improved. As a result, even when the number of stacked layers such as the fuse mounting portions 48 provided in the electrical component housing 38 increases, the first support pin insertion hole 52 and the second support pin insertion hole of the first support pin 70 and the second support pin 80. 54 can be smoothly inserted to improve the assembling workability, and the first support pin 70 and the second support pin 80 can be accurately positioned with respect to the substrate terminal 40, so that The terminal 40 can be stably supported. Furthermore, since the length of the first support pin 70 and the second support pin 80 can be suppressed and the strength can be ensured, the possibility of breakage during transportation or assembly can be reduced, and handling properties can be improved. I can do it. Furthermore, by suppressing the length of the first support pin 70 and the second support pin 80, the rotational moment generated in the first support pin 70 and the second support pin 80 due to the insertion / extraction force of a fuse or the like can be reduced. In addition, the durability of the first support pin 70 and the second support pin 80 can be improved.

  Moreover, the length dimension of the 1st support pin 70 and the 2nd support pin 80 can be arbitrarily set including 0, for example, as shown in FIG. 6 of this embodiment, the 1st support pin 70 is shown. By setting the length dimension of the second support pin 80 only to the length dimension of the second support pin 80, and setting the length dimension of the second support pin 80 to a dimension extending only to the uppermost fuse mounting portion 48, the first support A fusible link mounting portion 50 in which neither the pin 70 nor the second support pin 80 is disposed is formed in an intermediate portion of the electrical component housing 38 in the stacking direction, and the first support pin 70 and the second support pin 80 are formed. It is also possible to provide the connection terminal 82 that is not engaged with any of the above in the fusible link mounting portion 50, and the degree of freedom in designing the layout of the electrical component housing 38 can be improved.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, the lower case constituting the case may be used as the first terminal holding member and the first support pin may be formed on the lower case, or the upper case may be used as the second terminal holding member and the second support pin may be formed on the upper case. good. As described above, the length dimensions of the first support pin and the second support pin can be arbitrarily set. Therefore, in FIG. 9, for example, the length dimensions of the first support pin 70 and the second support pin 80 are shorter than those shown in FIG. Then, by separating the protruding end of the first support pin 70 and the protruding end of the second support pin 80 from each other in the vertical direction of the fuse module 22, both of the first support pin 70 and the second support pin 80 are made. It is possible to form a fuse mounting portion 48a that is not disposed, and a connection terminal 82 that is not engaged with either the first support pin 70 or the second support pin 80 is disposed in the fuse mounting portion 48a. Is also possible.

  Further, in the embodiment, the substrate terminal 40 is erected in the vertical direction, and the first support pin 70 and the second support pin 80 are extended in the vertical direction as the erection direction of the substrate terminal 40. The extending direction of the first support pin and the second support pin can be appropriately changed according to the arrangement direction of the electrical junction box. For example, the first support pin and the second support pin extend in the horizontal direction. It may be equal.

  In addition, the electrical component mounting portion formed on the side component connecting portion can appropriately adopt various shapes corresponding to various electrical components, and the number of stacked electrical component mounting portions is as in the above embodiment. It is not limited to four stages. Furthermore, in the said embodiment, although the 2nd printed circuit board 20 supported by the intermediate base 36 was provided, the 2nd printed circuit board 20 is not essential in this invention.

10: Electrical connection box, 16: Case, 18: First printed circuit board, 22: Fuse module (side component connection part), 38: Electrical component housing, 40: Board terminal, 42: Bus bar, 44: First terminal holding Member: 46: second terminal holding member, 48: fuse mounting portion (electrical component mounting portion), 50: fusible link mounting portion (electrical component mounting portion), 52: first support pin insertion hole, 54: second support Pin insertion hole, 56: bent portion, 58: soldering portion, 62: tuning fork terminal (connecting portion), 64: engaging portion, 66: connector mounting portion (electrical component mounting portion), 68: tab terminal (connecting portion) , 70: first support pin, 80: second support pin, 82: connection terminal

Claims (2)

A printed circuit board housed in a case;
It has a side component connecting portion provided with a plurality of electrical component mounting portions that are provided on the side surface of the case and open to the side,
While the side component connecting portion is configured to include a plurality of board terminals, one end of which is soldered to the printed circuit board and the other end is provided with a connecting portion,
In the electrical connection box, the connection portions of the plurality of substrate terminals are accommodated and disposed in the electrical component mounting portion in a state where the connection portions are stacked in a plurality of stages with a gap in the standing direction of the substrate terminals. ,
The side component connecting portion includes a first support pin that extends from one end to the other end in the standing direction and engages with an engagement portion provided on the board terminal, and the first support pin A second support pin that extends in the opposite direction and engages with the engaging portion is accommodated and disposed.
When the engaging portion provided on the board terminal engages with at least one of the first support pin and the second support pin, an electrical component applied to the board terminal in the insertion / extraction direction with respect to the connection part. The load is supported ,
In the standing direction, the protruding end of the first support pin and the protruding end of the second support pin are separated from each other, and only one of the first support pin and the second support pin is formed. By adopting at least one of the configurations, at least one connection terminal that is not engaged with either the first support pin or the second support pin is disposed in the side part connection portion. An electrical junction box characterized by being made . The side component connecting portion includes an electric component housing including the plurality of electric component mounting portions, a first terminal holding member disposed on one side of the electric component housing in the standing direction, and the electric component housing A second terminal holding member disposed on the other side of
The electrical connection box according to claim 1, wherein the first support pin protrudes from the first terminal holding member, and the second support pin protrudes from the second terminal holding member.

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