JP2012142136A - Printed board with connection terminal, and electrical junction box provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printed board with connection terminals, which has a novel structure and is capable of improving visibility of those portions of the connection terminals held by a terminal block which are soldered to the printed board.SOLUTION: Terminal insertion parts 38 penetrate a terminal block 24. The terminal block 24 is provided with an opening 34 for partially opening the peripheries of the terminal insertion parts 38 to the outside over the whole length of the terminal insertion parts 38. Outer peripheral surfaces of connection terminals 20 inserted into the terminal insertion parts 38 are exposed outside the terminal block 24 through the opening 34.

Description

  The present invention relates to a printed circuit board with connection terminals in which connection terminals held on a terminal base are soldered to a printed circuit board, and an electric connection box in which such printed circuit boards with connection terminals are accommodated in a case.

  Conventionally, as an internal circuit of an electrical connection box mounted on an automobile or the like, a plurality of connection terminals have been soldered and protruded from a printed circuit board in order to connect external electrical components such as connectors and fuses. A printed circuit board with connection terminals is used. In these printed circuit boards with connection terminals, for example, as described in Japanese Patent Application Laid-Open No. 2008-35669 (Patent Document 1), a plurality of connection terminals can be efficiently fixed together on a printed circuit board, or external electrical components In order to support the connection terminal at the time of insertion / extraction, the connection terminal is inserted and held in a hole-shaped terminal insertion portion penetrating the synthetic resin terminal base. Then, one end of the connection terminal is soldered to the printed circuit board, and the other end is projected out of the case of the electrical connection box so that it can be connected to an external electrical component.

  By the way, it is visually inspected whether the soldering portion of the connection terminal is correctly soldered to the printed circuit board. Since this visual inspection has many connection terminals provided on the printed circuit board, it is desirable that this visual inspection can be performed quickly and reliably.

  However, in the conventional printed circuit board with connection terminals using the terminal base, since the terminal base protrudes around the connection terminals, the line of sight is blocked by the terminal base and it is difficult to see the soldered portion. It was. In particular, in recent years, it has been studied to provide three or more rows of connection terminals on the terminal pedestal in order to increase the density of the printed circuit board and increase the number of connectors. In such a case, there is a problem that the soldering portion of the connection terminal located in the intermediate row is located inward of the terminal base and is more difficult to visually recognize.

JP 2008-35669 A

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that the visibility of the soldered portion to the printed circuit board of the connection terminal held on the terminal base can be further improved. An object of the present invention is to provide a printed circuit board with a connection terminal having a novel structure. Another object of the present invention is to provide an electrical junction box having a novel structure in which such a printed circuit board with connection terminals is accommodated in a case.

  The first aspect of the present invention relating to the printed circuit board with connection terminals is such that the terminal insertion portion is provided through the terminal base, and one end portion of the connection terminal inserted and held in the terminal insertion portion is soldered to the printed circuit board. In the printed circuit board with connection terminals, the terminal base is provided with an opening that opens a part of the circumference of the terminal insertion portion to the outside over the entire length of the terminal insertion portion. The outer peripheral surface of the connection terminal inserted and arranged in the terminal insertion portion is exposed to the outside.

  According to the printed circuit board with connection terminals structured according to the present invention, the outer peripheral surface of the connection terminal inserted and arranged in the terminal insertion part is exposed in the terminal base over the entire length of the terminal insertion part. An opening to be provided was provided. Thereby, the overhang of the terminal pedestal at the opening is suppressed, and the soldered portion at one end of the connection terminal can be easily visually confirmed through the opening.

  For example, the opening is provided in a window shape in the central portion of the terminal pedestal so that the side surface located inside the terminal pedestal at the connection terminal is exposed to the outside, or provided in a cutout shape at the peripheral edge of the terminal pedestal. In addition, any of the aspects in which the side surface of the connection terminal located outside the terminal base is exposed to the outside is included.

  The second aspect of the present invention related to the printed circuit board with connection terminals is the one described in the first aspect related to the printed circuit board with connection terminals, wherein the terminal base has a plurality of the terminal insertion portions arranged in a plurality of rows. The openings are formed continuously between the rows of the terminal insertion portions in the arrangement direction.

  If it does in this way, the soldering part of each connection terminal can be easily visually recognized through the opening part provided between the row | line | columns of a terminal insertion part. As a result, especially when the connection terminals are arranged in three or more rows on the terminal pedestal, the soldered portion of the connection terminal located in the intermediate row can also be visually recognized from above the terminal pedestal through the opening, thereby improving visibility. Can be improved.

  A third aspect of the present invention relating to a printed circuit board with connection terminals is the one described in the first or second aspect related to a printed circuit board with connection terminals, wherein the terminal base includes a plurality of the terminal insertion portions. The connection terminals arranged in alignment along the longitudinal direction of the pedestal, and the connection terminals inserted and arranged in the terminal insertion portions are inserted and arranged with a gap in the alignment direction with respect to the terminal insertion portions. It is.

  According to this aspect, the connection terminal can be easily inserted into the terminal insertion portion in a non-press-fit state that does not require a special pushing force. In addition, the deformation of the terminal pedestal can be connected by skillfully absorbing the relative displacement due to the difference in thermal expansion and contraction between the terminal pedestal and the printed circuit board due to heating of the soldering of the connection terminal etc. in the gap between the terminal insertion part and the connection terminal The possibility of causing the terminal misalignment is reduced, and the occurrence of solder cracks at the connection terminal can be suppressed.

  In the first aspect of the present invention relating to the electrical connection box, the terminal insertion portion is provided through the terminal base, and one end portion of the connection terminal inserted and held in the terminal insertion portion is soldered to the printed circuit board. In the electrical connection box in which the printed circuit board with connection terminal is accommodated in the case, and the other end of the connection terminal protrudes outside the case and can be connected to an external electrical component. The printed circuit board with connection terminals according to any one of the first to third aspects related to the printed circuit board with connection terminals is used as the printed circuit board, and the connection terminal is connected with the printed circuit board in the connection direction of the external electrical component. A board side latching part latched to the board and a pedestal side latching part latched to the terminal pedestal in the removal direction of the external electric component are formed, and the case overlaps the terminal pedestal By being I, that between the base-side engaging portion and the substrate-side engaging portion of the connecting terminals is sandwiched between the printed circuit board and the terminal stage, characterized.

  According to the electrical connection box having the structure according to the present invention, when an external electrical component is connected to the connection terminal, the connection side of the connection terminal is locked to the printed circuit board so that the connection terminal is I can support it. On the other hand, when the external electrical component is removed from the connection terminal, the pedestal side locking portion of the connection terminal is locked to the terminal pedestal, and the terminal pedestal is supported by the case, thereby supporting the connection terminal. I can do it. As a result, it is possible to support the connection terminals in both the insertion and removal directions of the external electric component, and to suppress the occurrence of solder cracks.

  The second aspect of the present invention relating to the electrical junction box is the one described in the first aspect relating to the electrical junction box, wherein the case protrudes toward the terminal base and is exposed to the outside of the terminal base. Further, a support protrusion for supporting the outer peripheral surface of the connection terminal is formed.

  According to this aspect, the support protrusion provided on the case supports the outer peripheral surface of the connection terminal exposed to the outside of the terminal base in the terminal insertion portion, thereby preventing the connection terminal from coming out of the terminal insertion portion. I can do it.

  According to a third aspect of the present invention relating to the electrical junction box, in the first or second aspect relating to the electrical junction box, the case is applied to the printed circuit board from the opposite side of the connection terminal. A support portion that is in contact with and supports the periphery of the soldering portion of the connection terminal on the printed circuit board is formed.

  According to this aspect, when the connection terminal is pushed into the printed circuit board when connecting the external electrical component, the printed circuit board is deformed flexibly by supporting the periphery of the soldering portion of the connection terminal on the printed circuit board with the case. This can suppress the occurrence of solder cracks more effectively.

  According to the present invention relating to the printed circuit board with connection terminals, the terminal base is provided with an opening that opens a part of the periphery of the terminal insertion part through which the connection terminal is inserted to the outside of the terminal base, and the outer peripheral surface of the connection terminal through the opening. Was exposed outside the terminal base. Thereby, the soldering part to the printed circuit board of a connection terminal can be visually recognized easily. And according to this invention regarding an electrical connection box, while forming the board | substrate side latching | locking part and the base side latching | locking part in the connection terminal in the said printed circuit board with a connection terminal, the case was piled up on the terminal base. Thereby, when an external electrical component is connected to the connection terminal, the connection terminal can be supported by locking the board side locking portion to the printed board. Further, when the external electrical component is removed, the connection terminal can be supported by locking the pedestal side locking portion to the terminal pedestal and supporting the terminal pedestal with the case. As a result, the connection terminals can be stably supported in both the insertion and removal directions of the external electric component, and the occurrence of solder cracks can be suppressed.

Sectional drawing of the principal part of an electrical-connection box. Sectional drawing of the direction different from FIG. 1 of the principal part of the electrical-connection box shown in FIG. The perspective view of the principal part of the printed circuit board with a connection terminal as 1st embodiment of this invention which comprises the electrical-connection box shown in FIG. The perspective view of the bottom face side of a terminal base. The perspective view of a connection terminal. The perspective view of the connecting terminal different from FIG. The perspective view of the principal part of the printed circuit board with a connection terminal as 2nd embodiment of this invention. The perspective view of the connection terminal of a different aspect.

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

  First, the principal part of the electrical junction box 10 as 1st embodiment of this invention regarding an electrical junction box is shown in FIG. 1 and FIG. The electrical connection box 10 has a structure in which a printed circuit board 18 with connection terminals as a first embodiment of the present invention relating to a printed circuit board with connection terminals is accommodated in a case 16 including an upper case 12 and a lower case 14.

  FIG. 3 shows a main part of the printed circuit board 18 with connection terminals. The printed circuit board 18 with connection terminals includes a pedestal connector 26 in which a line terminal 20 and a tab-shaped terminal 22 as a plurality of connection terminals are assembled to a terminal pedestal 24, and is provided on the printed circuit board 28. The terminal 22 is soldered to the printed circuit board 28 and protruded.

  FIG. 4 shows the bottom surface 30 side of the terminal base 24 constituting the base connector 26 facing the printed circuit board 18. The terminal pedestal 24 is an integrally molded product made of non-conductive synthetic resin, and has a substantially longitudinal rectangular block shape, and has a structure in which leg portions 32 protrude from the four corners. A plurality of (two in the present embodiment) openings 34 are formed in the terminal base 24. The opening 34 penetrates the terminal pedestal 24 in the thickness direction, opens on both the bottom surface 30 of the terminal pedestal 24 and the upper surface 36 on the opposite side, and has a rectangular slit shape extending in the longitudinal direction of the terminal pedestal 24. Has been. Two openings 34 are formed to extend in the longitudinal direction of the terminal base 24 in parallel with each other.

  In each opening 34, a plurality of terminal insertion portions 38a, 38b are formed on both sides in the width direction orthogonal to the extending direction. These terminal insertion portions 38a and 38b have substantially the same shape except that the width dimension (the dimension in the left-right direction in FIG. 1) differs according to the width dimension of the linear terminal 20 and the tab-shaped terminal 22 described later. Therefore, when it is not particularly necessary to distinguish, the terminal insertion portion 38 will be described.

  The terminal insertion portion 38 has a groove shape that penetrates in the thickness direction of the terminal pedestal 24 and opens in the upper surface 36 and the bottom surface 30 and opens in the inner surface 40a or the inner surface 40b facing in the width direction in the opening portion 34. Yes. Thereby, a part of the circumference of the terminal insertion portion 38 located on the inner surface 40 a (40 b) is opened to the outside of the terminal base 24 through the opening 34 over the entire length of the terminal insertion portion 38. Accordingly, a plurality of terminal insertion portions 38 are formed at predetermined intervals along the extending direction of the opening 34 on each of the inner surface 40a and the inner surface 40b opposed to each other in the width direction in the opening 34. A plurality of terminal insertion portions 38 are formed in two rows on both sides in the width direction of each portion 34. In the present embodiment, since the two openings 34 are formed, the plurality of terminal insertion portions 38 are formed in four rows. Thereby, the opening 34 is continuously provided in the terminal base 24 in the arrangement direction of the terminal insertion portions 38 between the two rows facing each other in the plurality of terminal insertion portions 38 arranged in four rows.

  The terminal insertion portion 38 has a stepped shape in which the width dimension (left and right dimensions in FIG. 1) is partially increased on the bottom surface 30 side. As a result, a pair of locking surfaces 42, 42 are formed on the bottom surface 30 side of the terminal insertion portion 38 so as to protrude to both sides in the width direction of the terminal insertion portion 38 and orthogonal to the length direction of the terminal insertion portion 38. .

  In addition, the width dimension (left-right dimension in FIG. 1) of the terminal insertion part 38a in this embodiment is slightly larger than the width dimension of the linear terminal 20 so that the linear terminal 20 can be inserted in a non-press-fit state. Has been. Similarly, the width dimension of the terminal insertion portion 38b is slightly larger than the width dimension of the tab-shaped terminal 22 so that the tab-shaped terminal 22 can be inserted in a non-press-fit state.

  The linear terminal 20 is inserted and held in the terminal insertion portion 38a, and the tab-like terminal 22 is inserted and held in the terminal insertion portion 38b. As shown in FIG. 5, the linear terminal 20 is formed by press punching a metal plate having a surface plated with tin or the like, and has one end portion as a soldering portion 44 extending with a square cross section. On the other hand, the other end portion is a connecting portion 46 having a square cross section having the same size as the soldering portion 44. A widened portion 48 having a partially enlarged width dimension is formed at the intermediate portion in the length direction between the soldering portion 44 and the connecting portion 46 in the linear terminal 20. And the board | substrate side latching made into the substantially flat surface which protrudes in the width direction of the linear terminal 20 at the end surface by the side of the soldering part 44 in the wide part 48, and spreads orthogonally to the extension direction of the linear terminal 20 is carried out. Portions 50 and 50 are formed. On the other hand, the pedestal side locking portion that protrudes on both sides in the width direction of the linear terminal 20 and extends substantially orthogonally to the extending direction of the linear terminal 20 by the end surface of the widened portion 48 on the connection portion 46 side. 52, 52 are formed.

  On the other hand, the tab-like terminal 22 is shown in FIG. In the tab-like terminal 22, the same reference numeral as that of the linear terminal 20 is attached to a portion having the same structure as that of the linear terminal 20. The tab-shaped terminal 22 is formed by press-punching a metal plate having a surface plated with tin or the like, and one end portion has a square cross section having the same size as the soldering portion 44 of the linear terminal 20. While the soldering portion 44 extends, the other end portion is a connecting portion 46 having a flat tab shape having a rectangular cross section larger than the soldering portion 44. Thus, the tab-like terminal 22 has a stepped shape in which the width dimension of the connection portion 46 is larger than the soldering portion 44, and the stepped portion provided at the base end portion of the soldering portion 44 A board-side locking portion 50 having a protruding surface shape similar to the board-side locking portion 50 of the linear terminal 20 is formed. Further, locking projections 54, 54 projecting on both sides in the width direction are formed at the intermediate portion in the length direction of the tab-like terminal 22 and closer to the connecting portion 46 than the board-side locking portion 50. A base-side locking portion 52 having a protruding surface shape similar to the base-side locking portion 52 of the linear terminal 20 is formed by the end surfaces of the locking protrusions 54 and 54 on the connection portion 46 side. The separation distance between the board-side locking portion 50 and the pedestal-side locking portion 52 in the linear terminal 20 and the separation distance between the board-side locking portion 50 and the pedestal-side locking portion 52 in the tab-like terminal 22 are as follows: Are equal to each other.

  The linear terminal 20 and the tab-like terminal 22 are inserted and held in the terminal insertion portions 38a and 38b of the terminal base 24, respectively. In these terminals 20 and 22, the connection portion 46 is inserted into the terminal insertion portion 38 from the bottom surface 30 side, and the base side locking portions 52 and 52 are locked to the locking surfaces 42 and 42 of the terminal base 24. By doing so, the insertion amount is defined. As a result, the connecting portion 46 between the linear terminal 20 and the tab-like terminal 22 protrudes on the upper surface 36 of the terminal base 24, and the soldering portion 44 protrudes from the bottom surface 30 of the terminal base 24. The soldering portions 44 of the linear terminals 20 and the tab-like terminals 22 are inserted into the through holes 56 of the printed circuit board 28 and soldered. In this way, the pedestal connector 26 is assembled to the printed circuit board 28 to form the printed circuit board 18 with connection terminals.

  As shown in FIG. 3, in the soldered state to the printed circuit board 18, the linear terminals 20 and the tab-like terminals 22 inserted into the terminal insertion portions 38 a and 38 b are open on the terminal base 24 on one surface of the outer peripheral surface. It is located on the same plane as the inner surface 40a (40b) of the portion 34, and is exposed to the outside of the terminal base 24 through the opening 34 over the entire length of the terminal insertion portions 38a, 38b. Further, the pedestal side locking portion 52 and the board side locking portion 50 in the linear terminal 20 and the tab-shaped terminal 22 are sandwiched between the terminal pedestal 24 and the printed board 18. Furthermore, as described above, the width dimensions of the terminal insertion portions 38a and 38b are slightly larger than those of the linear terminal 20 and the tab-shaped terminal 22, and the linear terminal 20 and the tab-shaped terminal 22 are connected to the terminal insertion portions 38a, 38b is inserted with a slight gap in the longitudinal direction of the terminal base 24 (left and right direction in FIG. 1).

  Such a printed circuit board 18 with connection terminals is accommodated in a case 16 comprising an upper case 12 and a lower case 14 as shown in FIGS. The upper case 12 and the lower case 14 are made of non-conductive synthetic resin. The upper case 12 is formed with a connector mounting portion 62 as a component mounting portion. The connector mounting portion 62 has a substantially rectangular peripheral wall shape that opens to the outside of the upper case 12 (upward in FIG. 1). Terminal insertion holes 66 a and 66 b are provided through the bottom 64 of the connector mounting portion 62. Although not shown in detail, the terminal insertion holes 66a and 66b are formed through the upper case 12 with cross-sectional shapes corresponding to the cross-sectional shapes of the linear terminal 20 and the tab-like terminal 22, respectively. The bottom portion 64 of the connector mounting portion 62 is formed so as to project inward (downward in FIG. 1) of the upper case 12, and the bottom surface 68 serving as a projecting end surface is a flat surface. Furthermore, as shown in FIG. 2, two support protrusions 70, 70 protruding from the bottom surface 68 are formed on the bottom 64. The support protrusion 70 has a longitudinal block shape corresponding to the opening shape of the opening 34 of the terminal base 24. As shown in FIG. 2, the projecting end portion of the support projection 70 from the bottom surface 68 has a tapered shape that tapers toward the front in the projecting direction (downward in FIG. 2). 34 can be easily fitted.

  On the other hand, a support portion 72 is formed integrally with the lower case 14. The support portion 72 has a substantially rectangular block shape protruding inward (upward in FIG. 1) of the lower case 14, and the support surface 74 serving as the protruding end surface is a flat surface. In the support portion 72, concave escape holes 76 that open to the support surface 74 are formed at positions that overlap the through holes 56 of the printed circuit board 18.

  The upper case 12 and the lower case 14 are fixed to each other by a conventionally known lock mechanism (not shown) or the like in a state where the printed circuit board 18 with connection terminals is accommodated. As a result, the printed circuit board 18 with connection terminals is accommodated in the case 16 constituted by the upper case 12 and the lower case 14, and the electrical connection box 10 is configured.

  In a state of being accommodated in the case 16, the connection portions 46 of the linear terminals 20 and the tab-like terminals 22 are respectively inserted into the terminal insertion holes 66 a and 66 b of the connector mounting portion 62, and the outer case 12 is removed from the connector mounting portion 62. It protrudes toward. As a result, the connecting portion 46 can be connected to a connector as an external electric component (not shown) attached to the connector attaching portion 62. Further, the bottom surface 68 of the connector mounting portion 62 in the upper case 12 is overlaid on the top surface 36 of the terminal base 24, so that the support protrusions 70, 70 protruding from the bottom surface 68 are connected to the terminal as shown in FIG. It fits in the opening parts 34 and 34 of the base 24, respectively. As a result, the support protrusions 70 and 70 are superimposed on the outer peripheral surfaces of the linear terminal 20 and the tab-shaped terminal 22 exposed on the inner surface 40a (40b) of the opening 34, and the linear terminal 20 and the tab-shaped terminal 22 The outer peripheral surface is supported by the support protrusions 70, 70.

  On the other hand, the printed circuit board 18 is superimposed on the support portion 72 in the lower case 14. And the soldering part 44 of the linear terminal 20 and the tab-like terminal 22 which protruded from the printed circuit board 18 through the through hole 56 is inserted in the escape hole 76 of the support part 72, and interference with the support part 72 is avoided. The Thereby, the printed circuit board 18 is directly superimposed on the support surface 74 of the support part 72, and the support part 72 is in contact with the printed circuit board 18 from the opposite side of the linear terminal 20 and the tab-shaped terminal 22.

  Although not shown in detail, the upper case 12 is formed with two positioning pins 78 and 78 projecting toward the lower case 14, and the positioning pins 78 and 78 penetrate the printed circuit board 18. The printed circuit board 18 is positioned in the case 16 by being inserted into the positioning holes 80 and 80 (see FIG. 3) and inserted into the bottomed cylindrical insertion tube portion 82 provided in the lower case 14. It is like that.

  According to the printed circuit board 18 with connection terminal having such a structure, the terminal insertion portions 38 a and 38 b are opened to the outside of the terminal base 24 through the opening 34 of the terminal base 24. Thereby, the outer peripheral surfaces of the linear terminals 20 and the tab-like terminals 22 inserted through the terminal insertion portions 38a and 38b are a part of the circumference, and the entire length of the terminal insertion portions 38a and 38b extends outside the terminal base 24. Exposed. Thereby, the soldering part 44 of the linear terminal 20 and the tab-like terminal 22 can be visually observed through the opening part 34 more easily, and the man-hour of the visual inspection of a soldering state can be reduced. In particular, in this embodiment, among the terminal insertion portions 38a and 38b arranged in four rows, the opening portions 34 and 34 are respectively provided between the rows facing each other, whereby the linear terminals 20 positioned in the intermediate row and The soldering portion 44 of the tab-like terminal 22 can also be visually recognized from above the terminal base 24 through the opening 34, and the visibility when the connection terminals are arranged in three or more rows can be effectively improved. I can do it.

  Further, the linear terminal 20 and the tab-like terminal 22 are inserted into the terminal insertion portions 38a and 38b with a gap therebetween. Thereby, when inserting the linear terminal 20 and the tab-shaped terminal 22 in the terminal insertion parts 38a and 38b, it can insert easily, without requiring special pushing force. Further, even when the terminal pedestal 24 is thermally deformed by soldering the linear terminals 20 and the tab-shaped terminals 22 or the like, the clearance between the terminal insertion portions 38a and 38b and the linear terminals 20 and the tab-shaped terminals 22 is reduced. The deformation can be absorbed, and the inclination of the linear terminals 20 and the tab-like terminals 22 and the occurrence of solder cracks caused thereby can be suppressed.

  And in the electrical connection box 10 which accommodated the printed circuit board 18 with a connection terminal in the case 16, the terminal insertion part is obtained by the support protrusion 70 provided in the upper case 12 being fitted in the opening part 34 of the terminal base 24. Opening portions to the inner surface 40 a (40 b) of 38 a and 38 b are covered with the support protrusion 70. Thereby, the outer peripheral surfaces of the linear terminals 20 and the tab-shaped terminals 22 exposed on the inner surfaces 40a and 40b can be supported by the support protrusions 70, and the terminal bases 24 of the linear terminals 20 and the tab-shaped terminals 22 can be supported. Can be more reliably prevented. In particular, in the present embodiment, the opening 34 is formed between the rows of the terminal insertion portions 38a and 38b arranged in two rows, so that one row of the terminal insertion portions 38a and 38b is formed by one support protrusion 70. Both open parts can be covered.

  Further, when a connector as an external electrical component (not shown) is connected to the linear terminal 20 and the tab-shaped terminal 22, the board-side locking portions 50 of both terminals 20 and 22 are connected in the connector connection direction (in FIG. It is locked to the printed circuit board 18 from above to below. Thereby, the linear terminal 20 and the tab-shaped terminal 22 can be supported with respect to the pushing force at the time of connector connection, and generation | occurrence | production of a solder crack can be suppressed. In particular, the support portion 72 provided in the lower case 14 supports the periphery of the soldered portion 44 of the linear terminal 20 and the tab-like terminal 22 on the printed circuit board 18, so that the printed circuit board 18 is bent and deformed by pushing the connector connection. And the occurrence of solder cracks can be further reduced.

  On the other hand, when the connector is removed, the pedestal side locking portions 52 of the linear terminals 20 and the tab-shaped terminals 22 are engaged with the locking surfaces 42 of the terminal pedestal 24 in the connector pulling direction (from the bottom to the top in FIG. 1). It is locked to. Further, the terminal base 24 is supported by the upper case 12. Thereby, the linear terminal 20 and the tab-shaped terminal 22 are supported by the upper case 12 and the terminal base 24, and the occurrence of solder cracks when the connector is removed can be suppressed. As described above, according to the present embodiment, the linear terminals 20 and the tab-like terminals 22 are supported in both the insertion and removal directions of the connector by sandwiching the linear terminals 20 and the tab-like terminals 22 between the printed circuit board 18 and the terminal base 24. And the occurrence of solder cracks can be effectively suppressed. Further, since the width dimension of the board-side latching portion 50 is increased, a larger plating surface area can be secured, and the soldering condition of the soldering portion 44 can be improved.

  Next, the principal part of the printed circuit board 90 with a connection terminal as 2nd embodiment of this invention regarding the printed circuit board with a connection terminal is shown in FIG. In the following description, members and parts having the same structure as in the first embodiment are denoted by the same reference numerals as those in the first embodiment in the drawing, and the description thereof is omitted as appropriate. To do.

  A pedestal connector 92 is provided on the printed circuit board 28 in the present embodiment. The terminal base 94 of the base connector 92 is formed with a plurality of terminal insertion portions 38a and 38b arranged in two rows. The openings 96 and 96 are formed in notches at both ends in the width direction of the terminal pedestal 94, so that part of the circumference of the terminal insertion portions 38 a and 38 b passes through the openings 96 and 96 and the width of the terminal pedestal 94. Open to the outside of the direction. Thereby, the outer peripheral surfaces of the linear terminal 20 and the tab-like terminal 22 inserted through the terminal insertion portions 38 a and 38 b are exposed to the outside in the width direction of the terminal base 94 through the opening 96. According to the present embodiment, since the outer peripheral surfaces of the linear terminals 20 and the tab-like terminals 22 are exposed on the outermost surface of the terminal base 94, the soldering portion 44 can be more easily visually recognized. Although illustration is omitted, also in the present embodiment, as in the first embodiment, the upper case is provided with two support protrusions (see the support protrusion 70 in FIG. 2), and these support protrusions. Is fitted into the openings 96, 96, so that the outer peripheral surfaces of the linear terminal 20 and the tab-like terminal 22 exposed to the outside of the terminal base 94 can be supported by the support protrusions.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, a wire terminal 98 shown in FIG. 8 may be used as the connection terminal. The wire terminal 98 is formed by cutting a metal wire having a constant square cross section into a predetermined length, and has a shape extending linearly with a constant square cross section over substantially the entire length. Then, between the soldered portion 44 on one end side and the connecting portion 46 on the other end side, a protruding board-side locking portion 50 is formed on the soldered portion 44 side by crushing, while on the connecting portion 46 side. A pedestal side locking portion 52 is formed in the same manner. Such wire rod terminals 98 can be assembled to the terminal base 24 in the same manner as the wire terminals 20 and the tab-like terminals 22. Thus, as the connection terminal, one formed from a metal wire can be employed.

  It is also possible to press-fit the connection terminal into the terminal insertion part and fix it to the terminal base. For example, while the linear terminal 20 in the first embodiment is press-fitted and fixed to the terminal insertion portion 38a at the pedestal side locking portion 52 protruding on both sides in the width direction, the connecting portion 46 side from the pedestal side locking portion 52 is For example, the terminal insertion part 38a may be easily inserted in a non-press-fit state with a gap.

10: Electrical connection box, 16: Case, 18, 90: Printed circuit board with connection terminal, 20: Linear terminal (connection terminal), 22: Tab-shaped terminal (connection terminal), 24, 94: Terminal base, 26, 92 : Pedestal connector, 28: printed circuit board, 34, 96: opening, 38a, b: terminal insertion part, 44: soldering part (one end part), 46: connection part (other end part), 50: board side latching Part, 52: base side locking part, 70: support protrusion, 72: support part, 98: wire terminal (connection terminal)

Claims (6)

In the printed circuit board with connection terminals in which the terminal insertion part is penetrating through the terminal base, and one end of the connection terminal inserted and held in the terminal insertion part is soldered to the printed circuit board.
The terminal pedestal is provided with an opening that opens a part of the circumference of the terminal insertion portion to the outside over the entire length of the terminal insertion portion, and is inserted into the terminal insertion portion through the opening. A printed circuit board with connection terminals, wherein an outer peripheral surface of the connection terminal is exposed to the outside.   The terminal base is formed with a plurality of terminal insertion portions arranged in a plurality of rows, and the openings are continuously provided in the arrangement direction between the rows of the terminal insertion portions. Item 8. A printed circuit board with connection terminals according to item 1.   In the terminal base, a plurality of the terminal insertion portions are arranged in alignment along the longitudinal direction of the terminal base, and the connection terminals inserted and arranged in the terminal insertion portions are connected to the terminal insertion portions. The printed circuit board with connection terminals according to claim 1, wherein the printed circuit board is inserted and arranged with a gap in the alignment direction. A printed circuit board with a connection terminal in which a terminal insertion part is provided in the terminal base and one end of the connection terminal inserted and held in the terminal insertion part is soldered to the printed circuit board is accommodated in the case. On the other hand, in the electrical connection box in which the other end of the connection terminal protrudes out of the case and can be connected to an external electrical component,
While using the printed circuit board with a connection terminal of any one of Claims 1-3 as the printed circuit board with a connection terminal, the said connection terminal is latched by the said printed circuit board in the connection direction of the said external electrical component. A board-side latching portion, and a base-side latching portion that is latched to the terminal pedestal in a direction in which the external electrical component is removed,
The case is overlapped with the terminal pedestal so that a gap between the pedestal side locking portion and the board side locking portion of the connection terminal is sandwiched between the terminal pedestal and the printed board. Electrical junction box.   The electrical connection box according to claim 4, wherein the case is formed with a support protrusion that protrudes toward the terminal base and supports the outer peripheral surface of the connection terminal exposed to the outside of the terminal base. .   5. The support case is formed in the case, the support portion being in contact with the printed circuit board from the opposite side of the connection terminal to support the periphery of the soldered portion of the connection terminal on the printed circuit board. 5. The electrical junction box according to 5.

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