JP2017022043A - Connector packaging board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector packaging board with a novel structure that can simultaneously attain prevention against flotation of a connector housing in a soldering process and improvement in durability against inserting/extracting force applied when a connector is inserted/extracted.SOLUTION: A connector packaging board includes a printed board 12 and a connector 16 mounted on one surface 14 of the printed board 12, and while the connector 16 includes a connector housing 18 and a connection terminal 20 having one end part 22 soldered to the printed board 12, an end part 44 of a peg 40 fitted to the connector housing 18 is inserted into a through hole 54 of the printed board 12 to be soldered so as to fix the connector housing 18 to the printed board 12. At the end 44 of the peg 40, a pair of engagement parts 46, 46 are provided which project outward to both insertion-directional sides of the connector 16 to engage an opening edge part 56, on the side of the other surface 50 of the printed board 12, of the through hole 54.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a connector mounting board in which a connector is mounted on a printed board.

  Conventionally, a connector mounting board in which a connector is mounted on a printed circuit board has been used as an internal circuit of an electric junction box for automobiles. In such a connector mounting board, a connection terminal is accommodated in a connector housing constituting the connector, and one end of the connection terminal is conductively connected to a printed wiring of the printed board by soldering. Furthermore, by fixing the connector housing to a predetermined position of the printed board by screwing, the insertion / extraction force applied when the mating connector is inserted / removed with respect to the connector is supported by the printed board via the connector housing. It is like that. As a result, the insertion / extraction force applied to the soldering portion of the connection terminal is reduced or avoided, and the conductive connection of the connector connection terminal to the printed wiring is stably secured.

  By the way, in order to meet the recent demand for space saving and weight reduction for vehicles, for example, as described in Japanese Patent Application Laid-Open No. 2014-154501 (Patent Document 1), fixing for fixing a connector housing to a printed circuit board. As a means, a structure using a peg made of a metal plate instead of screwing has been proposed. According to the connector mounting board described in Patent Document 1, the end of the peg attached to the peg attaching part formed in the connector housing is inserted into the through hole of the printed board and soldered, whereby the connector is attached to the printed board. Can be fixed. Thereby, compared with the case of screwing, the hole provided in the printed circuit board side can be made small, the density of the printed circuit board can be increased, and the weight can be reduced.

  However, in the structure of Patent Document 1, the step of inserting the end portion of the peg attached to the connector housing into the through hole of the printed board and fixing by soldering is the end portion of the connection terminal accommodated in the connector housing. It is performed simultaneously with the process of soldering to the printed wiring. Therefore, there is a risk that the connector housing will be lifted by the floating force or vibration of the molten solder in the soldering process, and the end of the peg may be fixed to the through hole by soldering while the connector housing is displaced from the normal position due to the lift was there. As a result, the problem of poor soldering with respect to the printed wiring of the connection terminal is inherent.

  In addition, the structure that only solders and fixes the end of the peg assembled to the connector housing to the through hole is inferior in the fixing strength of the connector housing to the printed circuit board compared to the case of screwing. There is also a possibility that sufficient durability against the applied insertion / extraction force cannot be secured.

JP 2014-154001 A

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is to simultaneously prevent the connector housing from being lifted in the soldering process and to improve the durability against the insertion / extraction force applied at the time of connector insertion / extraction. An object of the present invention is to provide a connector mounting board having a novel structure that can be achieved.

  A first aspect of the present invention includes a printed circuit board and a connector mounted on one surface of the printed circuit board, the connector being received and held in the connector housing, and one end portion of the printed circuit board. And connecting terminals soldered to the printed wiring, while the end of the peg attached to the connector housing is inserted into the through hole of the printed circuit board and soldered, so that the connector housing is It is fixed to the printed circuit board, and protrudes outward on both sides in the insertion / extraction direction of the mating connector with respect to the connector at the end of the peg, and at the opening edge of the through hole on the other surface side of the printed circuit board A pair of engaging portions to be engaged is provided.

  According to this aspect, at the end of the peg that is inserted into the through-hole of the printed board and soldered, protrudes outward on both sides in the insertion / extraction direction of the mating connector with respect to the connector, and the other surface side of the printed board of the through-hole A pair of engaging portions are provided to engage with the opening edge portions of the two. As a result, even if the soldering process to the printed wiring of the connector connection terminal and the soldering process to the through hole at the end of the peg are performed at the same time, the connector housing is lifted due to the floating force of the molten solder. Even when trying to do so, the engagement portion at the end of the peg engages with the opening edge of the through hole on the other surface side of the printed circuit board, thereby preventing the connector housing from being lifted. This ensures that the end of the peg is soldered to the through-hole while the connector housing is positioned and held in the proper position, and the fixing of the connector housing to the printed board by soldering the peg is stable. Therefore, it is possible to advantageously prevent the occurrence of poor soldering with respect to the printed wiring of the connection terminals.

  In addition, the pair of engaging portions provided at the end of the peg are engaged with the opening edge of the through hole on the other surface side of the printed circuit board on both sides of the mating connector insertion / extraction direction with respect to the connector. Thus, the insertion / extraction force applied to the connector housing can be directly distributed to the printed circuit board via the engaging portion at the end of the peg. As a result, compared to the conventional structure in which the peg is simply soldered to the through hole, the durability against the connector insertion / extraction force can be advantageously improved, and the connector housing can be prevented from being lifted and the durability against the connector insertion / extraction force can be improved. It is possible to achieve both improvements.

  The engaging portion provided at the end of the peg may be provided by bending the portion protruding from the through hole after inserting the end of the peg into the through hole, or the engaging portion may be provided in advance at the end of the peg. The end of the peg is inserted into the through hole while elastically deforming the end of the peg by the contact of the engaging portion with the through hole, and the end of the peg is elastic after the engaging portion is inserted through the through hole. By returning, the engaging portion may be engaged with the opening edge portion of the through hole on the other surface side of the printed circuit board.

  According to a second aspect of the present invention, in the one described in the first aspect, the end of the peg includes at least three branch ends spaced apart from each other in the insertion / extraction direction, The pair of engaging portions are formed by bending the distal ends of the branch end portions located on both sides in the insertion / extraction direction toward the outer sides on both sides in the insertion / extraction direction, while the insertion / extraction direction The branch end located at the center of the center is spaced apart from the through hole over the entire circumference, and the gap is filled with solder.

  According to this aspect, the engaging portion can be provided with a simple structure in which the tip ends of the branch end portions located on both sides in the insertion / extraction direction are bent outwardly on both sides in the insertion / extraction direction. Furthermore, since the branch end located in the center in the insertion / extraction direction is fixed to the through hole through the entire circumference via solder, it is possible to advantageously increase the fixing force of the end of the peg to the through hole. it can.

  Note that at least three branch end portions are preferably inserted through separate through holes, but may be inserted through a single long hole-shaped through hole extending in the insertion / extraction direction.

  According to a third aspect of the present invention, in the one described in the first or second aspect, the end of the peg is configured so that the engaging portion provided in advance at the end contacts the inner surface of the through hole. When the contact portion is elastically deformed and can be inserted into the through hole, and the end of the peg is elastically restored after the engagement portion is inserted through the through hole, the engagement portion becomes the printed circuit board. It is set as the structure engaged with the said opening edge part of the said through hole of the said other surface side.

  According to this aspect, the engaging portion is provided in advance at the end portion of the peg, the end portion of the peg is inserted into the through hole while being elastically deformed, and the engaging portion is printed by the elastic return of the end portion of the peg. It can be engaged with the opening edge of the through hole on the other surface side of the substrate. Thereby, formation of an engaging part and the operation | work which assemble | attach a connector to a printed circuit board can be performed still more efficiently.

  According to a fourth aspect of the present invention, there is provided the third aspect according to the third aspect, wherein an end of the peg is arranged at a center side of the peg from the protruding end of the engaging portion toward the tip of the peg. An inclined guide surface directed toward is provided.

  According to this aspect, since the inclined guide surface is provided at the tip end of the peg from the protruding end portion of the engagement portion toward the tip end of the peg, the engagement portion of the peg to the through hole is provided. Can be inserted more smoothly, and the assembly workability of the connector to the printed circuit board can be improved.

  In the present invention, at the end of the peg that is inserted into the through hole of the printed board and soldered, it protrudes outward on both sides in the insertion / extraction direction of the mating connector with respect to the connector, and on the other side of the printed board of the through hole A pair of engaging portions that engage with the opening edge portion are provided. As a result, even if the soldering process to the printed wiring of the connector connection terminal and the soldering process to the through hole at the end of the peg are performed simultaneously, the engaging portion at the end of the peg is the other side of the printed board with the through hole. The connector housing is prevented from being lifted by engaging with the opening edge on the surface side. As a result, it is possible to surely solder the end of the peg to the through hole while the connector housing is positioned and held in the normal position, which advantageously leads to poor soldering with respect to the printed wiring of the connection terminal. Can be prevented. Further, since the pair of engaging portions are engaged with the opening edge portion of the through hole on the other surface side of the printed circuit board on both sides in the connector insertion / removal direction, the insertion / extraction force is directly applied via the engagement portion. Can be dispersed on the printed circuit board. As a result, compared to the conventional structure in which the peg is simply soldered to the through-hole, it is possible to improve the durability against the connector insertion / extraction force, thereby preventing the connector housing from lifting and improving the durability against the insertion / extraction force. It becomes possible to achieve both.

1 is an overall perspective view of a connector mounting board as a first embodiment of the present invention. The disassembled perspective view of the connector mounting substrate shown in FIG. The top view of the connector mounting board | substrate shown in FIG. IV-IV cross-sectional enlarged view of FIG. The VV cross-sectional enlarged view of FIG. It is a disassembled perspective view which shows the connector mounting board | substrate as 2nd embodiment of this invention, Comprising: The figure corresponded in FIG. FIG. 5 is an enlarged cross-sectional view illustrating a state in which the end portion of the peg is inserted and fixed in the through hole of the printed board in the present embodiment, and corresponds to FIG. 4.

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

  First, the connector mounting board | substrate 10 as 1st embodiment of this invention is shown to FIGS. As shown in FIG. 1, the connector mounting board 10 includes a printed board 12 and a connector 16 mounted on a surface 14 that is one surface of the printed board 12. The connector 16 has a structure in which a plurality of connection terminals 20 are inserted and accommodated in a connector housing 18 as shown in FIGS. More specifically, one end 22 which is one end of the connection terminal 20 is soldered to the printed wiring 24 of the printed circuit board 12, while the other end of the connection terminal 20 is not illustrated. By being connected to the side connector, the mating connector and the printed wiring 24 of the printed circuit board 12 are electrically connected. For easy understanding, the printed wiring 24 is not shown in FIG. Further, in the following description, “upper” means the upper side in FIG. 1, and “lower” means the lower side in FIG.

  As shown in FIGS. 1 and 2, the connector housing 18 is an integrally molded product formed of a synthetic resin, and has a box shape having a substantially rectangular fitting portion 28 that opens to the front. The mating connector (not shown) is fitted into the fitting portion 28. On the other hand, flat block-like peg holding portions 30 projecting outward are provided at the lower ends of both sides of the connector housing 18 in the width direction (vertical direction in FIG. 3). On the upper surface 32 of the peg holding portion 30, a groove-like peg insertion hole 34 is provided that opens in the upper surface 32 of the peg holding portion 30 and extends in the longitudinal direction of the connector housing 18 (left and right in FIG. 3). The bottom surface 36 of the peg holding portion 30 has a groove-like branch end insertion hole that opens into the bottom surface 36 of the peg holding portion 30 and communicates with the peg insertion hole 34 at three locations spaced in the longitudinal direction of the connector housing 18. 38 is provided (see FIG. 4).

  The peg 40 is accommodated and held in the peg insertion hole 34 of the peg holding portion 30 of the connector housing 18. As shown in FIGS. 2 and 4, the peg 40 has a flat plate shape. For example, the peg 40 is formed by press punching a metal plate having a surface such as a copper plate plated with tin. Yes. In the lower end 42 which is the end of the peg 40 in the length direction (vertical direction in FIG. 2), the width direction of the peg 40 (horizontal direction in FIG. 4), that is, the insertion / extraction direction of the mating connector with respect to the connector 16 described later ( In the following, three branch end portions 44a, 44b, 44c, which are substantially vertically long plate-like end portions spaced apart from each other in the insertion / extraction direction, protrude downward and are provided with three branch end portions 44a, 44b, 44c. In either case, the proximal end side is wider than the distal end side. Further, the tip ends of the two branch end portions 44a and 44c located on both sides in the insertion / removal direction are bent obliquely downward outward on both sides in the insertion / removal direction, thereby forming a pair of engaging portions 46 and 46. In addition, the protruding end surfaces 48 of the pair of engaging portions 46, 46 are tapered inclined surfaces that protrude obliquely upward outward in the width direction (left-right direction in FIG. 4). In the present embodiment, the pair of engaging portions 46 and 46 are provided in advance at the tip ends of the two branch end portions 44a and 44c when the peg 40 is processed. On the other hand, the remaining one branch end 44b located at the center in the insertion / removal direction protrudes straight downward.

  In addition, the connector housing 18 accommodates and holds a group of connection terminals 20 arranged in the left-right direction. Each connection terminal 20 has the other end protruding inside the fitting portion 28 of the connector housing 18, while the one end 22 protrudes outward from the connector housing 18 in a substantially crank shape, The tip of one end 22 is placed on a printed wiring 24 provided on the surface 14 of the printed circuit board 12 (see FIG. 3).

  As shown in FIG. 2, the printed board 12 is a substantially rectangular flat plate-like insulating board formed of a known insulating material such as a glass epoxy resin. A printed wiring 24 (see FIG. 3) is provided. Further, six through-holes 44 a, 44 b, 44 c of the pegs 40 attached to the peg holding parts 30 on both sides of the connector housing 18 are inserted into one side edge 52 of the printed circuit board 12. Three holes 54 are provided in a state of being arranged in parallel by three.

  As shown in FIG. 2, the through-hole 54 is a through-hole having a substantially circular cross-sectional shape, and its diameter dimension: R is the front end side of the branch end portion 44 b located at the center in the insertion / extraction direction of the peg 40. (R> A) (see FIG. 5), on the other hand, engaging portions of two branch end portions 44a and 44c located on both sides in the insertion / extraction direction of the peg 40 The length dimension 46 in the insertion / extraction direction is smaller than B (B> R) (see FIG. 4). The width dimension W on the base end side of the three branch end portions 44a, 44b, 44c is wider than the diameter dimension R of the through hole 54 (see FIG. 4). Further, the inner peripheral surface of the through hole 54 is plated on the entire surface, and a flange (not shown) is provided around the opening of the through hole 54 on the front surface 14 side and the back surface 50 side of the printed circuit board 12. A land portion is provided.

  As shown in FIGS. 1 to 5, the connector 16 extends from the front surface 14 side to the back surface 50 side of the printed circuit board 12 with respect to the through hole 54 of the printed circuit board 12 having such a structure. The branch end portions 44a, 44b, 44c of the mounted peg 40 are inserted and arranged. More specifically, in the connector 16, the plurality of connection terminals 20 are inserted and held in the connector housing 18, and the peg 40 is received in the peg insertion hole 34 of the peg holding portion 30 of the connector housing 18. It is configured by being held. When the branch end portions 44a, 44b, 44c of the peg 40 attached to the connector 16 are inserted into the through hole 54 of the printed circuit board 12, first, the branch ends 44a, 44b, 44c of the peg 40 are inserted. The tip is inserted into the opening on the surface 14 side of the through hole 54. At this time, the diameter dimension R of the through hole 54 is smaller than the length dimension B in the insertion / extraction direction of the engaging portion 46 of the two branch end portions 44a, 44c located on both sides of the peg 40 in the insertion / extraction direction. Since the protruding end surface 48 of the engaging portion 46 is a tapered inclined surface, the protruding end surface 48 of the engaging portion 46 is pushed toward the back surface 50 side of the printed circuit board 12, so that the tapered inclined surface 48 is pressed. Due to the action of the surface, the protruding end surface 48 of the engaging portion 46 is inserted into the through hole 54 while being pressed inward in the width direction (left-right direction in FIG. 4). That is, the projecting end surface 48 of the engaging portion 46 provided in advance at the tip end of the two branch end portions 44a and 44c of the peg 40 abuts against the inner surface of the through hole 54, whereby the two branch end portions 44a of the peg 40 are contacted. 44c are elastically deformed and can be inserted into the through hole 54. Then, the two branch end portions 44 a and 44 c are further pushed into the depth of the through hole 54, and the engaging portion 46 provided at the tip of the two branch end portions 44 a and 44 c is located on the back surface 50 side of the through hole 54. When the opening portion is exceeded, the two branch end portions 44 a and 44 c are elastically restored, and the engaging portion 46 is engaged with the opening edge portion 56 on the back surface 50 side of the through hole 54. On the other hand, the remaining one branch end 44b located in the center of the insertion / extraction direction of the peg 40 is projected straight downward, and the diameter dimension of the through hole 54: R is a rectangular cross section on the tip side of the branch end 44b. Diagonal dimension of: Since it is formed larger than A, the branch end portion 44b is separated from the inner surface of the through hole 54 across the entire circumference without being pressed against the through hole 54. (See FIG. 5). In such a state, the connector 16 is positioned and held at the normal position with respect to the printed circuit board 12. That is, the branch end portions 44 a, 44 b, 44 c of the peg 40 attached to the connector 16 are inserted into the through hole 54 of the printed circuit board 12, and a plurality of connection terminals accommodated and held in the connector housing 18. A tip portion of one end portion 22, which is one end portion of 20, is placed on a printed wiring 24 provided on the surface 14 of the printed circuit board 12. The insertion amount of the branch end portions 44a, 44b, 44c of the peg 40 into the through hole 54 is such that the width dimension W on the proximal end side of the branch end portions 44a, 44b, 44c: W is the diameter dimension of the through hole 54: R Therefore, the base end side of the branch end portions 44 a, 44 b, 44 c is defined by contacting the surface 14 of the printed circuit board 12.

  Finally, the step of soldering one end 22 of the connection terminal 20 of the connector 16 to the printed wiring 24 of the printed circuit board 12 and the branching ends 44 a, 44 b, 44 c of the peg 40 into the through hole 54 of the printed circuit board 12. The soldering process is simultaneously performed using, for example, a reflow method. Thus, one end 22 of the connection terminal 20 is soldered to the printed wiring 24 of the printed circuit board 12 so that the mating connector and the printed wiring 24 of the printed circuit board 12 are electrically connected. The connector housing 18 is fixed to the printed circuit board 12 by soldering the branch end portions 44a, 44b, and 44c of the peg 40 inserted and disposed in the through hole 54 of the printed circuit board 12. In addition, in the branch end part 44b located in the center of the insertion / extraction direction, the solder 60 is filled in the gap 58 between the inner surface of the through hole 54 by soldering, so that the branch end part 44b is connected to the branch end part 44b via the solder 60 and plating. Print wiring (not shown) of the printed circuit board 12 is conducted, and the branch end 44b is fixed to the through hole 54 (see FIG. 5).

  According to the connector mounting substrate 10 of the present embodiment having such a structure, the branch end portions 44a, 44b, and 44c of the pegs 40 that are inserted into the through holes 54 of the printed circuit board 12 and soldered in the insertion / extraction direction. The tip ends of the two branch end portions 44a and 44c located on both sides are bent obliquely downward outward on both sides in the insertion / removal direction to form a pair of engagement portions 46 and 46, and the engagement portion 46 is a through-hole. The hole 54 is adapted to be engaged with the opening edge 56 on the back surface 50 side. By this engagement, the step of soldering the connection terminal 20 of the connector 16 to the printed wiring 24 and the step of soldering the branch end portions 44a, 44b, 44c of the peg 40 to the through hole 54 are simultaneously performed using, for example, a reflow method. Even if it goes, the connector housing 18 is prevented from being lifted due to the floating force of the melted solder 60 or the like. In addition, such engagement ensures that the branch end portions 44a, 44b, 44c of the peg 40 are soldered to the through hole 54 in a state where the connector housing 18 is positioned and held at the normal position with respect to the printed circuit board 12. It has come to be realized. Therefore, it is possible to stably fix the connector housing 18 to the printed circuit board 12 by soldering the pegs 40, so that soldering failure when soldering the connection terminals 20 to the printed wiring 24 is prevented. Occurrence can be advantageously prevented.

  In addition, a pair of engaging portions 46, 46 provided on the peg 40 are bent obliquely downward outward on both sides in the insertion / extraction direction, and engage with the opening edge portion 56 on the back surface 50 side of the through hole 54. Thus, the insertion / extraction force applied to the connector housing 18 can be directly distributed to the printed circuit board 12 via the engaging portion 46. Therefore, compared to the conventional structure in which the peg without the engaging portion 46 is soldered to the through hole 54, the durability against the insertion / extraction force applied to the connector housing 18 can be advantageously improved. This makes it possible to achieve both the prevention of the housing 18 from lifting and the improvement of the durability against the insertion / extraction force applied to the connector housing 18.

  Further, according to the present embodiment, a pair of engagements with a simple structure in which the tip ends of the two branch end portions 44a and 44c located on both sides in the insertion / removal direction are bent obliquely downward outward on both sides in the insertion / removal direction. Portions 46 can be provided. Furthermore, since the branch end 44b of the peg 40 located in the center in the insertion / extraction direction is fixed to the through hole 54 via the solder 60 over the entire circumference, the fixing force of the peg 40 to the through hole 54 is also increased. It can be advantageously achieved.

  In addition, by providing an engaging portion 46 with a protruding end surface 48 having a tapered inclined surface at the tip of the two branch end portions 44a and 44c of the peg 40 in advance, the tapered inclined surface is utilized. The branch end portions 44a and 44c can be inserted into the through hole 54 while being elastically deformed. Furthermore, the engaging portion 46 can be engaged with the opening edge portion 56 on the back surface 50 side of the through hole 54 by elastically restoring the branch end portions 44a and 44c. Thus, since the engaging part 46 should just be provided in the front-end | tip part of the two branch end parts 44a and 44c of the peg 40, formation of the engaging part 46 can be performed easily. Moreover, the projecting end surface 48 of the engaging portion 46 is a tapered inclined surface, so that the work for assembling the connector 16 to the printed circuit board 12 can be performed efficiently.

  Next, the connector mounting board 62 according to the second embodiment of the present invention will be described in detail with reference to FIGS. 6 to 7, but members and parts having the same structure as the above embodiment are shown in the drawings. The same reference numerals as those in the above embodiment are attached, and detailed description thereof is omitted. In such a connector mounting board 62, the tip end portions of the branch end portions 64a and 64c, which are two end portions located on both sides in the insertion / extraction direction of the peg 40, are bent in a mountain shape outwardly on both sides in the insertion / extraction direction. An inclined guide surface 70 that is a tapered inclined surface toward the center side of the peg 40 is provided from the protruding end portion 68 of the engaging portion 66 toward the distal ends of the branch end portions 64a and 64c of the peg 40. In terms of points, an embodiment different from the above embodiment is shown. For easy understanding, the printed wiring 24 is not shown in FIG. 6, and the solder 60 is not shown in FIG.

  According to this aspect, since the inclined guide surface 70 which goes to the center side of the peg 40 toward the tip of the peg 40 is provided at the tip of the branch end portions 64a and 64c of the peg 40, such a tapered shape is provided. By using the inclined guide surface 70 that is an inclined surface, the engaging portion 66 of the peg 40 can be more smoothly inserted into the through hole 54, and the workability of assembling the connector 16 to the printed circuit board 12 can be improved. Can be achieved.

  As mentioned above, although several embodiment of this invention was explained in full detail, this invention is not limited by these specific description. For example, in the above-described embodiment, the engaging portions 46 and 66 are provided in advance at the tip ends of the branch end portions 44a, 44c, 64a, and 64c when the peg 40 is processed, but the branch end portions 44a, 44c, and 64a are provided. , 64c may be formed by bending the portion protruding from the through hole 54 after the through hole 64c is inserted into the through hole 54. Further, the shapes of the engaging portions 46 and 66 are not limited to those illustrated in the above embodiment, and can be smoothly inserted into the through hole 54 such as an arrow shape or a mushroom shape, and the back surface 50 side of the through hole 54. Any shape can be adopted as long as it can be engaged with the opening edge portion 56.

  Further, the peg 40 is provided with three branch end portions 44a, 44b, 44c, 64a, 64b, and 64c. However, two or four or more branch end portions may be provided in the insertion / extraction direction. A pair of engaging parts 46 and 46 should just be comprised by the two branch end parts located in both sides. In addition, the branch end portions 44a, 44b, 44c, 64a, 64b, and 64c are preferably inserted into separate through holes 54, but are inserted into a single long hole-shaped through hole extending in the insertion / extraction direction. May be. Moreover, in the said embodiment, although the peg holding | maintenance part 30 was provided in the both sides of the width direction (FIG. 3 up-down direction) of the connector housing 18, you may provide in only one side. Although the peg 40 is made of metal, it is sufficient that the branch end portions 44a, 44b, 44c, 64a, 64b, 64c can be soldered to the through hole 54, for example, at the branch end portion of the peg 40 made of heat resistant resin. Any structure such as a plated one can be employed.

10, 62: connector mounting board, 12: printed board, 14: surface (one side), 16: connector, 18: connector housing, 20: connection terminal, 22: one end (one end), 24: printed Wiring, 40: peg, 44a-c, 64a-c: branch end (end), 46, 66: engaging portion, 50: back surface (the other surface), 54: through hole, 56: opening edge, 58: Clearance, 60: Solder, 68: Projection end, 70: Inclined guide surface

Claims (4)

Including a printed circuit board and a connector mounted on one surface of the printed circuit board;
While the connector includes a connector housing and a connection terminal that is housed and held in the connector housing and one end of which is soldered to the printed wiring of the printed board,
The connector housing is fixed to the printed circuit board by soldering the end of the peg attached to the connector housing through the through hole of the printed circuit board,
At the end of the peg, there is a pair of engaging portions that protrude outward on both sides in the insertion / extraction direction of the mating connector with respect to the connector and engage with an opening edge portion on the other surface side of the printed board of the through hole. A connector mounting board characterized by being provided.   The end of the peg is configured to include at least three branch ends spaced apart from each other in the insertion / removal direction, and the tip ends of the branch ends located on both sides of the insertion / removal direction, The pair of engaging portions are configured by being bent outward on both sides in the direction, while the branch end portion located at the center in the insertion / extraction direction is spaced from the through hole over the entire circumference. The connector mounting board according to claim 1, wherein the connector mounting board is spaced apart from each other and the gap is filled with solder.   The end portion of the peg is elastically deformed by the engagement portion provided in advance at the end portion contacting the inner surface of the through hole, and can be inserted into the through hole. After the through hole is inserted, the end of the peg is elastically restored so that the engaging portion engages with the opening edge of the through hole on the other surface side of the printed circuit board. The connector mounting board according to claim 1 or 2.   The connector mounting board according to claim 3, wherein an inclined guide surface is provided at an end portion of the peg toward a center side of the peg from the protruding end portion of the engaging portion toward the tip of the peg.

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