JPH0935781A - Inserted lead type connector, and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means which can raise the durability of a soldering part between the lead of an inserted lead type connector and a mounting board, and raise the reliability of the inserted lead type connector. SOLUTION: An inserted lead type connector 1 is provided with a connector body 2 and a lead 3 extending in the direction roughly vertical to the bottom face of that connector body 2 to from that bottom face, and that insertion lead type connector 1 is attached to a mounting board 5, being soldered after being inserted into the through hole 6 made at the mounting board 5. Here, the lead 3 is bent by bending processing at the border between the section to be accommodated in the through hole 6 and the section not accommodated in the through hole 6, so as to raise the durability by reducing the stress falling on the soldering part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insertion lead type connector which is attached to a mounting board by joining the leads to the mounting board by soldering or the like so as to be substantially perpendicular to the mounting board, and a method for manufacturing the same. is there.

[0002]

2. Description of the Related Art A connector body having a substantially rectangular parallelepiped shape and a lead extending from one end surface (flat surface portion) of the connector body in a direction substantially perpendicular to the end surface are provided on a mounting board. Conventionally, an insertion lead type connector which is adapted to be mounted on the mounting board by being inserted into the through hole and being joined to the mounting board by soldering or the like has been conventionally known.

7 (a) and 7 (b), respectively,
A front view and a perspective view of the conventional insertion lead-type connector thus mounted on the mounting substrate are shown. FIG. 7 (a)
And, as shown in FIG. 7B, in such a conventional insertion lead type connector 1, a substantially rectangular parallelepiped connector body 2 is provided.
A plurality of leads 3 extend straight (perpendicular to the lower end surface and linearly) from one end surface (hereinafter, referred to as “lower end surface”) of the. Further, the lower end surface of the connector body 2 is provided with a plurality of positioning pins 4 extending in a direction perpendicular to the lower end surface.

A plurality of external terminal connecting holes 8 are formed on the end face of the connector body 2 of the insertion lead type connector 1 located on the back side of the lower end face (hereinafter referred to as "upper end face").
Are provided, and external connection connectors (not shown) can be attached to these external terminal connection holes 8. Thus, the insertion lead type connector 1 is adapted to send and receive an electric signal via the external connection connector.

Then, the insertion lead type connector 1 is attached to the mounting substrate 5 in the following procedure. That is, first, the positioning pin 4 is aligned with the positioning pin insertion hole 9 formed in the mounting board 5, and then the lead 3 is inserted into the through hole 6 formed in the mounting board 5 so as to penetrate therethrough. The back surface side of 5 is soldered, the leads 3 and the mounting board 5 are connected via the soldering portion 7, and the insertion lead type connector 1 is attached (positioned and fixed) to the mounting board 5.

[0006]

By the way, in the conventional mounting structure of the insertion lead type connector 1 and the mounting substrate 5 as described above, the external connection connector is inserted into or removed from the external terminal connection hole 8. In doing so, a direction perpendicular to the lower end surface between the insertion lead type connector 1 and the mounting substrate 5 (hereinafter, this direction is referred to as “vertical direction”, and a direction perpendicular to this direction, that is, a spreading direction of the lower end surface is “ It is called "horizontal direction"). Then, the load is concentrated on the soldering portion 7 interposed between the lead 3 and the mounting substrate 5. For this reason, if the number of times of insertion / removal of the external connection connector increases, repeated load or stress is applied to the soldering portion 7, and eventually the soldering portion 7 may be damaged and electrical disconnection may occur. Yes,
There is a problem that the durability or reliability of the insertion lead type connector 1 is reduced.

Further, in the conventional mounting structure of the insertion lead type connector 1 and the mounting substrate 5, there is a problem that the mounting structure is relatively complicated and the mounting work such as soldering is troublesome. The present invention has been made to solve the above conventional problems,
It is an object of the present invention to provide a means capable of increasing the durability of the joint between the lead of the insertion lead type connector and the mounting board and increasing the reliability of the insertion lead type connector. Furthermore, it is another object of the present invention to provide means capable of simplifying the work of attaching the insertion lead type connector to the mounting board.

[0008]

The first aspect of the present invention, which has been made to achieve the above object, comprises a connector body and a lead extending from one end face of the connector body in a direction substantially perpendicular to the end face. An insertion lead-type connector, which is equipped with the leads and is positioned and fixed with respect to the mounting board by inserting the leads into a through hole formed in the mounting board and joining the leads to the mounting board,
It is characterized in that the lead is bent by a bending process at a boundary portion between a portion accommodated in the through hole and a portion not accommodated in the through hole. In the insertion lead type connector according to the first aspect of the present invention, since the lead is bent at the boundary between the portion accommodated in the through hole and the portion not accommodated in the through hole, the lead is formed in the through hole. After insertion, the lead does not fall out of the through hole regardless of the orientation of the mounting board or the insertion lead type connector, for example, upside down. Also, when a vertical load is applied between the insertion lead-type connector and the mounting board due to the insertion or removal of the external connection connector, the leads are bent, so the leads and the mounting board are joined. The load or stress applied to the part is distributed vertically and horizontally.

According to a second aspect of the present invention, in the insertion lead type connector according to the first aspect of the present invention, a plurality of leads are arranged side by side in two rows on the end face of the connector body, and the leads in one row are arranged. And the lead of the other row facing the lead is bent so as to be line-symmetrical to each other. In the insertion lead type connector according to the second aspect of the present invention, basically the same operation as in the insertion lead type connector according to the first aspect of the present invention occurs. Further, a plurality of leads are arranged side by side in two rows on the lower end surface of the connector body, and the leads of one row and the leads of the other row facing the leads are bent so as to be line-symmetrical to each other. Therefore, when a vertical load is applied between the insertion lead type connector and the mounting board, the load or stress applied to the joint between the lead and the mounting board is effectively dispersed.

A third aspect of the present invention is, in the insertion lead-type connector according to the first or second aspect of the present invention, extending from the end face of the connector body in a direction substantially perpendicular to the end face and attaching the connector to the mounting board. A positioning pin to be inserted into the formed hole is provided, and the positioning pin is fixed to the mounting board by heat staking. In the insertion lead type connector according to the third aspect of the present invention, basically the same operation as in the insertion lead type connector according to the first or second aspect of the present invention occurs. Furthermore, since the positioning pin is fixed to the mounting board by heat staking, when a vertical load is applied between the insertion lead-type connector and the mounting board, part of the load is received by the positioning pin and the lead The load or stress applied to the joint between the mounting substrate and the mounting substrate is reduced.

According to a fourth aspect of the present invention, in the insertion lead type connector according to any one of the first to third aspects of the present invention, the insertion lead type connector is extended from the connector body to the mounting board side and is mounted. It is characterized in that a positioning claw for fitting with the substrate is provided. In the insertion lead type connector according to the fourth aspect of the present invention, basically the same operation as in the insertion lead type connector according to any one of the first to third aspects of the present invention occurs. Further, since the positioning claw extending from the connector body fits with the mounting board, when a vertical load is applied between the insertion lead type connector and the mounting board, a part of the load is received by the positioning claw. Therefore, the load or stress applied to the joint between the lead and the mounting substrate is reduced.

A fifth aspect of the present invention is an insertion lead type connector according to any one of the first to fourth aspects of the present invention, wherein the tip end portion of the lead is engaged with the through hole. It is characterized in that a rounded bulge is formed. In the insertion lead type connector according to the fifth aspect of the present invention, basically the same operation as in the insertion lead type connector according to any one of the first to fourth aspects of the present invention occurs. Further, since a substantially rounded bulge that engages with the through hole is formed at the tip of the lead, the lead is inserted into the through hole and penetrated, and then the mounting board or the insertion lead type connector is inserted. Leads do not fall out of the through holes in any orientation. Further, when a vertical load is applied between the insertion lead-type connector and the mounting board due to the insertion or removal of the external connection connector, a part of the load is caught by the bulge portion, and the lead and the mounting board are mounted. The load or stress applied to the joint with the substrate is reduced.

A sixth aspect of the present invention is an insertion lead-type connector according to any one of the first to fourth aspects of the present invention, wherein the tip of the lead is engaged with the through hole. It is characterized in that a triangular bulge is formed. In the insertion lead type connector according to the sixth aspect of the present invention, basically the same operation as in the insertion lead type connector according to any one of the first to fourth aspects of the present invention occurs. Further, since a substantially triangular bulge portion that engages with the through hole is formed at the tip of the lead, after inserting the lead into the through hole and penetrating it, the mounting board or insertion lead type connector The lead does not fall out of the through hole even in this orientation. Further, when a vertical load is applied between the insertion lead-type connector and the mounting board due to the insertion or removal of the external connection connector, a part of the load is caught by the bulge portion, and the lead and the mounting board are mounted. The load or stress applied to the joint with the substrate is reduced.

A seventh aspect of the present invention is a method for manufacturing an insertion lead type connector according to any one of the first to sixth aspects of the present invention, wherein the method is provided before the lead is inserted into the through hole. A solder material is attached in advance near the tip of the lead, the lead is inserted into the through hole, and then the solder material is heated and melted, and the lead is bonded to the mounting board with the solder. It is characterized by having done. In the method of manufacturing the insertion lead type connector according to the seventh aspect of the present invention, the solder material is preliminarily adhered to the vicinity of the tip of the lead before the lead is inserted into the through hole, and therefore the vicinity of the tip of the lead is Since the lead wire is thick, the lead does not fall out of the through hole regardless of the orientation of the mounting board or the insertion lead type connector after the lead is inserted into the through hole and passed therethrough. Further, the work for soldering the leads to the mounting board is simplified.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below. Embodiment 1. Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 (a) and 1 (b). FIG. 1 (a)
Also, in FIG. 1B, 1 is an insertion lead type connector (generic), 2 is a connector body, and 3 is extended from the lower end surface of the connector body 2 in a direction substantially perpendicular to the lower end surface. , Leads for electrically connecting to the mounting board 5 on which circuit wiring is provided. Reference numeral 6 denotes a through hole provided in the mounting board 5 into which the lead 3 is inserted. Reference numeral 7 denotes a soldering portion which is a joining material for joining the lead 3 and the mounting substrate 5.

In the first embodiment, a plurality of leads 3 are arranged in two rows on the lower end surface of the insertion lead type connector 1. Then, the lead 3 in one row and the lead 3 in the other row facing the lead 3 are arranged in a dogleg shape so as to be line-symmetric with respect to the center line L shown in FIG. 1B in advance. The insertion lead-type connector 1 is positioned and fixed to the mounting board 5 at the same time when the leads 3 are inserted into the mounting board 5. Thus, after the lead 3 is inserted into the through hole 6 and the connector body 2 is positioned, soldering is performed in the same manner as in the conventional case, and the lead 3 and the mounting substrate 5 are electrically connected via the soldering portion 7. Connected.

According to the first embodiment, the insertion lead type connector 1 can be substantially constituted by the connector body 2 and the lead 3, and the positioning pin 4 which is conventionally provided (see FIG. 7). Can be omitted. Further, by bending the lead 3 into a shape devised as described above, after the lead 3 is inserted into the through hole 6, the mounting position of the insertion lead type connector 1 to the mounting substrate 5 is fixed. Therefore, even if the insertion lead type connector 1 or the mounting board 5 is turned upside down before the insertion lead type connector 1 is attached (soldered) to the mounting board 5, the insertion lead type connector 1 is mounted on the mounting board 5.
It will not fall out of the box and installation workability will be greatly improved.

Further, in the conventional mounting structure, when a vertical load is applied between the insertion lead-type connector 1 and the mounting board 5, the load is applied to the leads 3 and the mounting board 5 as vertical stress. There is a possibility that the soldering portion 7 may be damaged or broken due to the action on the soldering portion 7. However, in the first embodiment, by bending the lead 3 into a shape devised as described above, the applied stress is dispersed vertically and horizontally, and the durability of the soldered portion 7 is improved. Therefore, the reliability of the insertion lead type connector 1 is enhanced.

Embodiment 2. Hereinafter, referring to FIG.
Embodiment 2 of the present invention will be described. In FIG. 2, the same members as those of the conventional example shown in FIGS. 7A and 7B are designated by the same reference numerals, and the individual description thereof will be omitted. As shown in FIG. 2, in the second embodiment, the positioning pin 4 provided on the lower end surface of the connector body 2 of the insertion lead-type connector 1 is inserted into the positioning pin hole 9 of the mounting board 5.
After being aligned and fitted to, the positioning pin 4 is heated and caulked to the mounting substrate 5, so that the insertion lead type connector 1 and the mounting substrate 5 are connected and fixed. At the same time, the lead 3 is inserted into the through hole 6 of the mounting board 5 to pass through it, and then the lead 3 and the mounting board 5 are soldered, and the lead 3 and the mounting board 5 are soldered via the soldering portion 7. I am trying to connect.

According to the second embodiment, the connector body 2 is fixedly arranged on the mounting board 5 by heat caulking the positioning pin 4 to the mounting board 5. For this reason,
The mounting workability is improved, and the stress due to mechanical stress or thermal stress such as bending or twisting of the mounting substrate 5 from the outside is applied to both the soldering portion 7 of the lead 3 and the heat-staking portion of the positioning pin 4. It can be dispersed. Therefore, the durability or reliability of the soldered portion 7 is improved.

Third Embodiment Hereinafter, a third embodiment of the present invention will be described with reference to FIG. In addition, in FIG. 3, FIG. 7A and FIG.
The same members as those of the conventional example shown in FIG. As shown in FIG. 3, in the third embodiment, the connector body 2 is provided with a positioning claw 10 that can be fitted to the mounting board 5. No positioning pin is provided.

In the third embodiment, the positioning claw 10 extended to the connector body 2 of the insertion lead type connector 1 is provided.
Are aligned with both ends of the mounting board 5, and the connector claw 2 and the mounting board 5 are fixed by the action of the positioning claws 10. At the same time, the lead 3 is inserted into the through hole 6 of the mounting board 5 to pass through it, and then the lead 3 and the mounting board 5 are soldered, and both are connected via the soldering portion 7. Also in the third embodiment, the same operation and effect as in the second embodiment can be obtained.

Embodiment 4 Hereinafter, referring to FIG.
A fourth embodiment of the present invention will be described. In addition, in FIG. 4, the same reference numerals are given to the respective members common to the conventional example shown in FIGS. 7A and 7B, and the individual description thereof will be omitted. As shown in FIG. 4, in the fourth embodiment, the tip shape of the lead 3 extending from the lower end surface of the connector body 2 of the insertion lead type connector 1 in a direction perpendicular to the lower end surface is slightly swollen. It has a round shape. Then, the lead 3 is inserted into the through hole 6 provided in the mounting substrate 5 and penetrated, and the bulge portion of the lead 3 is fitted into the through hole 6. After that, soldering is performed centering on the substantially round shaped portion at the tip of the lead 3. The bulge at the tip of the lead 3 is designed to have an appropriate size so that the lead 3 cannot be easily removed from the through hole 6 after the lead 3 is fitted into the through hole 6.

According to the fourth embodiment, since the tip end portion of the lead 3 has a substantially round shape, the insertion lead type connector 1 is inserted after the lead 3 is inserted into the through hole 6 and penetrated. It is fixed to the mounting substrate 5. That is, the connector body 2 is fixedly arranged with respect to the mounting substrate 5, and the mounting workability is improved. Further, as compared with the conventional straight lead 3, the resistance to external stress is improved and the durability or reliability of the soldered portion 7 is improved.

Embodiment 5 FIG. Hereinafter, referring to FIG.
Embodiment 5 of the present invention will be described. Note that, in FIG. 5, members common to those of the conventional example shown in FIGS. 7A and 7B are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIG. 5, in the fifth embodiment, the tip shape of the lead 3 extending from the lower end surface of the connector body 2 of the insertion lead type connector 1 in a direction perpendicular to the lower end surface is triangular. There is. Then, the lead 3 is inserted into the through hole 6 provided in the mounting substrate 5 and penetrated therethrough, and the lead 3
Is fitted in the through hole 6. After this,
Soldering is performed centering on the triangular portion at the tip of the lead 3. In order to prevent the lead 3 from coming off the through hole 6 easily after the lead 3 is fitted into the through hole 6, the tip end of the lead 3 is shaped like a triangle or the reaction force of the claw is calculated appropriately. Design in size. Also in the fifth embodiment, the same action and effect as those in the fourth embodiment can be obtained.

Embodiment 6 FIG. Hereinafter, FIG. 6A and FIG.
The sixth embodiment of the present invention will be described with reference to (b). In addition, in FIG. 6A and FIG.
Members common to the conventional example shown in (a) and FIG. 7 (b) are denoted by the same reference numerals, and description thereof is omitted. FIG.
As shown in FIGS. 6A and 6B, in the sixth embodiment, the tips of the leads 3 extending from the lower end surface of the connector body 2 of the insertion lead type connector 1 in a direction perpendicular to the lower end surface. In advance, solder plating 11 or solder dip 11
(Preliminary solder 11) is applied, and the tip of the lead 3 is slightly thickened by the preliminary solder 11. And
The lead 3 is inserted into the through hole 6 provided in the mounting substrate 5 and penetrated, and the lead 3 is fitted into the through hole 6. After that, the preliminary solder 11 is heated and melted, and soldering is performed so as to cover the entire tip of the lead 3. It should be noted that the amount of the preliminary solder 11 or the diameter of the through hole 6 is appropriately designed so that the lead 3 cannot be easily removed from the through hole 6 after the lead 3 is fitted into the through hole 6.

Also in the sixth embodiment, the same operation and effect as in the case of the fourth or fifth embodiment can be obtained.

[0028]

As described above, according to the present invention, since the leads or the positioning pins of the insertion lead type connector can be fixed and positioned on the mounting board, the workability of mounting the insertion lead type connector on the mounting board is improved. And the reliability is improved.

Specifically, according to the insertion lead type connector of the first aspect of the present invention, after the lead is inserted into the through hole, the mounting substrate or the insertion lead type connector can be arranged in any direction. Since the lead does not fall out of the through hole, the workability in attaching (joining) the lead to the mounting board after inserting the lead into the through hole is improved, and the work is accelerated. Further, when a vertical load is applied between the insertion lead type connector and the mounting board, the load or stress applied between the lead and the mounting board is dispersed in the vertical direction and the horizontal direction. The stress applied to the joint portion with the substrate, for example, the soldered portion is reduced. Therefore, the durability of the joint portion is enhanced and the reliability of the insertion lead type connector is enhanced.

According to the insertion lead type connector of the second aspect of the present invention, the same effects as those of the insertion lead type connector of the first aspect of the present invention can be obtained. Furthermore, when a vertical load is applied between the insertion lead-type connector and the mounting board, the load or stress applied between the leads and the mounting board is effectively dispersed, so the durability of the joint is improved. Further, the reliability of the insertion lead type connector is further enhanced.

According to the insertion lead type connector of the third aspect of the present invention, basically, the same effect as that of the insertion lead type connector of the first or second aspect of the present invention can be obtained. Further, when a vertical load is applied between the insertion lead-type connector and the mounting board, a part of the load is received by the positioning pin, so that the stress applied to the joint between the lead and the mounting board is reduced, The durability of the joint portion is further enhanced, and the reliability of the insertion lead type connector is further enhanced.

The insertion lead type connector according to the fourth aspect of the present invention is basically the same as the insertion lead type connector according to any one of the first to third aspects of the present invention. The effect is obtained. Further, when a vertical load is applied between the insertion lead-type connector and the mounting board, a part of the load is received by the positioning claw, so that the stress applied to the joint between the lead and the mounting board is reduced, The durability of the joint portion is further enhanced, and the reliability of the insertion lead type connector is further enhanced.

The insert lead type connector according to the fifth aspect of the present invention is basically the same as the insert lead type connector according to any one of the first to fourth aspects of the present invention. The effect is obtained. Furthermore, after the lead is inserted into the through hole and penetrated, the lead does not fall off from the through hole in any orientation of the mounting substrate or the insertion lead type connector. The workability when attaching the leads to the mounting substrate is improved, and the work is accelerated. Further, when a vertical load is applied between the insertion lead-type connector and the mounting board, a part of the load is received by the bulge portion, so that the stress applied to the joint portion between the lead and the mounting board is reduced, The durability of the joint is further enhanced,
The reliability of the insertion lead type connector is further enhanced.

The insertion lead type connector according to the sixth aspect of the present invention is basically the same as the insertion lead type connector according to any one of the first to fourth aspects of the present invention. The effect is obtained. Furthermore, after the lead is inserted into the through hole and penetrated, the lead does not fall off from the through hole in any orientation of the mounting substrate or the insertion lead type connector. The workability when attaching the leads to the mounting substrate is improved, and the work is accelerated. Further, when a vertical load is applied between the insertion lead-type connector and the mounting board, a part of the load is received by the bulge portion, so that the stress applied to the joint portion between the lead and the mounting board is reduced, The durability of the joint is enhanced, and the reliability of the insertion lead type connector is enhanced.

According to the method of manufacturing the insertion lead type connector according to the seventh aspect of the present invention, after the lead is inserted into the through hole and penetrated, the mounting substrate or the insertion lead type connector is oriented in any direction. Since the lead does not fall out of the through hole, the workability in attaching the lead to the mounting board after inserting the lead into the through hole is improved and the work is speeded up. Also, since the work when soldering the leads to the mounting board is simplified,
The work of mounting the insertion lead type connector on the mounting board is further speeded up.

[Brief description of drawings]

1A is a front view of a mounting structure of an insertion lead-type connector and a mounting substrate according to a first embodiment of the present invention, and FIG. 1B is a side view of the mounting structure shown in FIG. is there.

FIG. 2 is a front view of a mounting structure of an insertion lead-type connector and a mounting board according to a second embodiment of the present invention.

FIG. 3 is a front view of a mounting structure of an insertion lead-type connector and a mounting board according to a third embodiment of the present invention.

FIG. 4 is a front view of a mounting structure of an insertion lead-type connector and a mounting board according to a fourth embodiment of the present invention.

FIG. 5 is a front view of a mounting structure of an insertion lead type connector and a mounting board according to a fifth embodiment of the present invention.

6A and 6B are front views of a mounting structure of an insertion lead-type connector and a mounting board according to a sixth embodiment of the present invention.

7 (a) is a front view of a conventional mounting structure for an insertion lead-type connector and a mounting substrate, and FIG. 7 (b) is a perspective view of the mounting structure shown in FIG. 7 (a).

[Explanation of symbols]

1 insertion lead type connector, 2 connector body, 3
Leads, 4 positioning pins, 5 mounting boards, 6 through holes, 7 soldering parts, 8 external terminal connection holes, 9
Positioning pin holes, 10 positioning claws, 11 preliminary solder.

Claims (7)

[Claims] 1. A connector body, and a lead extending from one end face of the connector body in a direction substantially perpendicular to the end face, the lead body being inserted into a through hole formed in a mounting substrate, By joining to the mounting board,
In the insertion lead-type connector that is positioned and fixed with respect to the mounting board, the lead is bent by bending at a boundary between a portion accommodated in the through hole and a portion not accommodated in the through hole. Inserted lead type connector characterized in that 2. The insertion lead type connector according to claim 1, wherein a plurality of leads are arranged side by side in two rows on the end surface of the connector body, and the lead of one row and the other of the other opposite to the lead. An insert lead type connector, wherein the leads of the row are bent so as to be line-symmetrical to each other. 3. The insertion lead-type connector according to claim 1 or 2, wherein the connector body extends from the end face in a direction substantially perpendicular to the end face and is inserted into a hole formed in the mounting board. An insertion lead-type connector characterized in that a positioning pin is provided, and the positioning pin is fixed to the mounting board by heat staking. 4. The insertion lead type connector according to claim 1, further comprising a positioning claw extending from the connector body to the mounting board side and fitted with the mounting board. An insertion lead type connector characterized in that it is provided. 5. The insertion lead type connector according to any one of claims 1 to 4, wherein a substantially round bulge portion that engages with the through hole is formed at a tip portion of the lead. Inserted lead type connector characterized in that 6. The insertion lead type connector according to any one of claims 1 to 4, wherein a substantially triangular bulge portion that engages with the through hole is formed at a tip portion of the lead. Inserted lead type connector characterized in that 7. A method of manufacturing an insert lead type connector according to claim 1, wherein the lead wire is preliminarily soldered in the vicinity of the tip of the lead wire before the lead wire is inserted into the through hole. Inserted lead characterized in that a material is adhered, the lead is inserted into the through hole, then the solder material is heated and melted, and the lead is bonded to the mounting substrate with the solder. Method of manufacturing flat connector.