JP5359852B2 - Soldering jig and method for manufacturing printed circuit board with terminals using the soldering jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soldering tool with a structure of positioning and holding a connection terminal with high accuracy when soldering and reducing a resistance at the time of removal, and to provide a method of manufacturing a printed board with a terminal using such a soldering tool. <P>SOLUTION: The soldering tool includes: a first tool 14 which is positioned and placed on a mounting surface of the printed board 12 and provided with a through-hole 36a into which the connection terminal 22 to be soldered to a conductive path 20b of the printed board 12 is movably inserted in a penetrating manner; and a second tool 16 positioned and placed on the first tool 14 and provided with an engaging hole 72 with which an end 71 of the connection terminal 22 projecting from the through hole 36a of the first tool 14 is positioned and engaged. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a soldering jig used when soldering connection terminals to a printed circuit board. The present invention also relates to a method of manufacturing a printed circuit board with a terminal provided with a connection terminal soldered using such a soldering jig.

  Conventionally, in-vehicle electrical connection boxes, etc., contain printed circuit boards in which a large number of connection terminals are soldered to conductive paths, and external electric wires and electrical components are connected to the printed circuit boards through these connection terminals. Thus, efficient power supply and signal exchange are performed.

  By the way, in order to realize a stable connection state between the connection terminal and the external electric wire or the like, it is important that each connection terminal is soldered in a state where the connection terminal is positioned and held with high accuracy. In particular, when the connection terminal is directly erected on the printed circuit board without using a holder such as a resin base, the connection terminal must be securely held. Therefore, as described in Japanese Patent Application Laid-Open No. 11-54901 (Patent Document 1), the soldering jig positioned and placed on the printed board has a depth dimension that can accommodate the entire length of the connection terminal. In addition to providing a terminal accommodation hole, the connection terminal is soldered to the printed circuit board in a state where the connection terminal is accommodated and held in the terminal accommodation hole. According to this, since the entire surface of the connection terminal can be held over the entire length of the connection terminal protruding from the printed circuit board, the connection terminal can be stably held on the printed circuit board.

  However, in the soldering jig having such a conventional structure, in order to maintain the positioning (alignment) of the connection terminal with respect to the printed circuit board with high accuracy, the inner periphery of the connection terminal and the terminal receiving hole are not provided. Only a slight gap can be provided between the peripheral surfaces. Therefore, the connection terminal is slightly inclined due to the external force exerted during soldering, and the outer peripheral surface of the connection terminal comes into contact with the inner peripheral surface of the terminal receiving hole. As a result, deformation such as twisting may occur in the connection terminal. As a result, a problem occurs in the connection between the connection terminal and the external electric wire, and in some cases, it may be difficult to remove the jig itself.

  Further, when the protruding length of the connection terminal from the printed circuit board is large, it is necessary to increase the thickness dimension of the jig accordingly, and the material cost of the jig becomes high. Furthermore, in the elongated terminal receiving hole, scraps such as peeling of plating when inserting the connection terminal are easily collected, and the maintenance of the jig is complicated.

JP-A-11-54901

  The present invention has been made in the background of the above-mentioned circumstances, and the solution is to provide a novel, which can position and hold the connection terminal with high accuracy during soldering and has reduced resistance during removal. It is to provide a soldering jig having a structure. Moreover, this invention also provides the manufacturing method of the printed circuit board with a terminal using such a jig for soldering.

A first aspect of the present invention relating to a soldering jig is a soldering jig used when soldering a base end portion of a connection terminal to a conductive path formed on a printed circuit board. A first jig that is positioned on the mounting surface of the substrate and provided with an insertion hole through which the connection terminal is inserted in a penetrating state; and a first jig that is positioned on the first jig and the first jig A second jig provided with a fitting hole for positioning and fitting the tip of the connection terminal protruding from the insertion hole of the jig, and the first jig protrudes toward the printed circuit board. A pressing projection for pressing the overlapping portion of the connection terminal on the surface of the printed circuit board at the connection terminal inserted through a through hole formed in the printed circuit board to the printed circuit board. ,Feature To.

According to the first aspect, the alignment of the connection terminal with respect to the printed circuit board is realized by the cooperative action of the first jig and the second jig. Here, the connection terminal is inserted into the first jig with a gap (free insertion), and is aligned with the second jig only by positioning and fitting the tip. This eliminates the need for tight insertion and insertion into the jig, and avoids the problem of deformation of the connection terminal when the jig is inserted and removed.

  Moreover, the inclination of the connection terminal is effectively limited by the interference with the inner peripheral surface of the insertion hole of the first jig under the condition that the connection terminal is accurately positioned in the fitting hole of the second jig at the tip portion thereof. . Here, since the insertion hole of the first jig is considerably separated from the fitting hole of the second jig in the length direction of the connection terminal, even if there is a slight gap between the connection terminal and the insertion hole, Based on the positioning effect by the contact of the insertion hole with the inner peripheral surface of the insertion hole, the inclination of the terminal can be efficiently suppressed and high-precision alignment can be realized.

In addition, since the soldering jig has a divided structure of the first jig and the second jig, the other end of the connecting terminal is inserted into the insertion hole of the first jig and the other end of the fitting hole of the second jig. By fitting only the connection terminals, the connection terminals can be easily set on the soldering jig. Therefore, as compared with the case where the connection terminal is set in the elongated terminal accommodating hole as in the conventional soldering jig, the working efficiency is greatly improved, and the maintenance of the jig is facilitated.
In addition, according to the first aspect, since the connection terminal can be pressed against the printed board and held, the inclination of the connection terminal can be more effectively prevented using the surface of the printed board. Also, when removing the jig after soldering, when removing the first jig after removing only the second jig (fitted to the tip of the terminal), the connection terminal should be The second jig can be stably removed while avoiding the external force action in the direction of detachment from the printed board with respect to the connection terminal.

  A second aspect of the present invention relating to a soldering jig is the one described in the first aspect, wherein the insertion hole and the overlapping surface of the first jig and the second jig overlapped with each other, A gap is formed in the portion where the fitting hole is formed.

  According to the second aspect, since the separation distance between the insertion hole and the fitting hole is increased, the positioning operation (alignment operation) of the connection terminal by their cooperation is more effectively realized.

The aspect of the present invention relating to the method of manufacturing a printed circuit board with a terminal is such that the base end portion of a connection terminal is inserted into a through hole formed in the printed circuit board and soldered, whereby the connection to the conductive path of the printed circuit board a method of manufacturing a terminal with the printed circuit board terminals are conductive, with a jig for soldering according to the first or second state like the invention according to the jig soldering, on the mounting surface of the printed circuit board The first jig and the second jig are arranged to overlap each other, and the connection terminal set by inserting the base end portion into the through hole of the printed circuit board is arranged in the middle of its length direction. Soldering from the back side of the printed circuit board in a state of being inserted into the insertion hole of the first jig in the portion and fitted and positioned in the fitting hole of the second jig at the tip portion thereof .

  According to this aspect, the effect of the soldering jig having the structure according to the present invention is exhibited, and the printed circuit board with terminals in which the connection terminals are soldered to the printed circuit board with high precision alignment is obtained. It is possible to easily manufacture with a simple jig attaching / detaching workability while preventing deformation of the jig.

  According to the present invention relating to the soldering jig, the fitting of the second jig is performed in a state where the soldering jig is divided into the first jig and the second jig and the connection terminal is loosely inserted into the insertion hole of the first jig. Since only the tip portion is fitted into the fitting hole, the connection terminal can be positioned and held with high accuracy during soldering and the resistance during removal can be reduced.

  In addition, according to the present invention relating to a method for manufacturing a printed circuit board with terminals, it is possible to easily manufacture a printed circuit board with terminals soldered in a state where the connection terminals are positioned with high accuracy with respect to the printed circuit board.

The top view which shows the state by which the jig for soldering as one Embodiment of this invention was assembled | attached to the printed circuit board. The side view in the state in which the jig for soldering shown in FIG. 1 was assembled | attached to the printed circuit board. FIG. 3 is an enlarged vertical cross-sectional view of a main part in a state where the soldering jig shown in FIG. 1 is assembled to a printed circuit board, and is an enlarged vertical cross-sectional view of the main part in the III-III direction in FIG. The principal part expanded sectional view of the IV-IV direction in FIG. The principal part expanded sectional view of the VV direction in FIG. The top view of the 1st jig | tool which comprises the jig for soldering shown in FIG. The top view of the 2nd jig | tool which comprises the jig for soldering shown in FIG. Explanatory drawing for demonstrating the manufacturing process of the printed circuit board with a terminal using the jig for soldering shown in FIG. The principal part expanded sectional view in the use condition of the jig for soldering as 2nd embodiment of this invention. The principal part expanded sectional view for demonstrating the other aspect employable by 2nd embodiment of this invention.

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

  1 to 7 show a state in which a soldering jig 10 according to an embodiment of the present invention is assembled to a printed circuit board 12. The soldering jig 10 includes a first jig 14 that is positioned and placed on the printed circuit board 12 and a second jig 16 that is placed on the first jig 14.

  More specifically, the printed circuit board 12 has a structure in which conductive paths 20 a and 20 b are formed on both front and back surfaces of the insulating base 18. A connection terminal 22 connected to a female terminal such as an external connector provided at an end portion of the external electric wire is attached to the front surface side of the printed circuit board 12, and the land 24 provided on the conductive path 20b on the back surface side is attached. Soldered.

  As shown in FIG. 3, the connection terminal 22 is a so-called upright board terminal that is directly attached to the printed circuit board 12 without being held by a terminal pedestal or the like. It is formed by being bent in the shape of a crank at the middle part. As a result, the connection terminal 22 is provided with a locking portion 26 at an intermediate portion in the length direction, and a protruding portion whose one side in the length direction protrudes substantially perpendicularly from the surface of the printed circuit board 12 with the locking portion 26 interposed therebetween. On the other hand, the other side in the length direction is a base end portion 30 that is inserted through a through hole 32 formed in the printed circuit board 12 and protrudes substantially perpendicularly from the back surface of the printed circuit board 12.

  Although not shown, on the front side of the printed circuit board 12, in addition to the connection terminals 22, a pedestal connector connected to an external connector or the like, an upright connection terminal connected to a fuse, a relay, and the like An upright connection terminal or the like to be electrically connected is attached and soldered to the conductive path 20b on the back surface side.

  The first jig 14 placed on the front surface side of the printed circuit board 12 is formed of a metal material such as stainless steel, and as shown in FIG. 6, has a thick rectangular plate shape as a whole. The first jig 14 is provided with a plurality of insertion holes 36a into which the connection terminals 22 are loosely inserted. In addition to the insertion hole 36a, the first jig 14 has an insertion hole 36b in which an upright connection terminal connected to a fuse is loosely inserted, and an insertion hole in which an upright connection terminal connected to a relay is loosely inserted. 36c and a plurality of opening windows 38 through which the base connector is inserted are formed.

  As shown in FIG. 4, each insertion hole 36 a has a substantially cross-sectional shape and is formed to extend straight in the thickness direction of the first jig 14 and open to the front surface 34 a and the back surface 34 b of the first jig 14 ( (See FIG. 3). A pair of side surfaces 40, 40 facing each other in the thickness direction (left-right direction in FIG. 4) of the connection terminal 22 inserted in each insertion hole 36a, respectively, in the center portion in the width direction (up-down direction in FIG. 4), A concave groove 42 having a substantially constant rectangular cross-sectional shape and extending straight in the thickness direction of the first jig 14 and opening in the side surface 40 is formed. Thereby, even when the protruding portion 28 of the connecting terminal 22 is provided with a protruding portion protruding outward in the width direction, the connecting terminal 22 can be inserted into each insertion hole 36a. In each insertion hole 36a, in the vicinity of the opening on the back surface 34b side of the first jig 14, there is formed a tapered portion 43 that gradually increases in opening area as it goes outward in the thickness direction of the first jig 14. A guide mechanism when the connection terminal 22 is inserted into the first jig is configured.

  The insertion hole 36b in which the upright connection terminal electrically connected to the fuse is loosely inserted and the insertion hole 36c in which the upright connection terminal electrically connected to the relay is loosely inserted have the same shape as the insertion hole 36a. ing.

  Further, on the back surface 34b of the first jig 14, presser protrusions 44a to 44c are provided at the peripheral edge portions of the respective insertion holes 36a to 36c. Each of the presser protrusions 44 a to 44 c is formed separately from the first jig 14 and is a rectangular block body made of the same metal material as that of the first jig 14. Each pressing protrusion 44a-c is provided with attachment pieces 46a-c projecting outward.

  The shape and size of each of the presser protrusions 44a to 44c, the protruding position of the mounting pieces 46a to 46c, and the like are from the viewpoint of the arrangement position of the presser protrusions 44a to 44c on the first jig 14 and the simplification of the mounting work. Set as appropriate. For example, as shown in FIG. 6, the plurality of insertion holes 36 a to 36 c aligned in a row have a long shape extending in the same direction along the side surface extending in the alignment direction of each insertion hole 36 a to 36 c. The presser protrusions 44a to 44c are disposed adjacent to each other.

  Such presser protrusions 44a to 44c are placed on the back surface 34b of the first jig 14 so as to be adjacent to the peripheral edge portions of the insertion holes 36a to 36c. Fixed. In this state, the protruding end surfaces of the presser protrusions 44 a to 44 c are parallel to the back surface 34 b of the first jig 14. In the drawings, illustration of bolts for fixing the presser protrusions 44a to 44c to the first jig 14 is omitted.

  Further, a pedestal holding frame 48 is provided on the back surface 34 b of the first jig 14 at the peripheral edge of each opening window 38. The pedestal holding frame 48 is formed separately from the first jig 14 with the same metal material as the first jig 14, and has a rectangular frame shape. Further, the pedestal holding frame 48 is provided with two mounting pieces 50, 50 protruding in different directions.

  Such a pedestal holding frame 48 was placed with its opening 52 positioned on the opening window 38 of the first jig 14 and superimposed on the peripheral edge of the opening window 38 of the first jig 14. In this state, the mounting pieces 50 and 50 are bolted. Although not shown, when the pedestal connector is assembled to the first jig 14 as will be described later, the pedestal connector is inserted into the opening 52 of the pedestal holding frame 48, and the edge portion thereof is inserted. A plurality of terminals are engaged with the peripheral edge portion of the opening window 38 so as to protrude substantially perpendicularly from the other surface in the thickness direction of the first jig 14 through the opening window 38. In the drawing, the illustration of bolts for fixing the pedestal holding frame 48 to the first jig 14 is omitted.

  Further, two through holes 54 penetrating in the thickness direction are formed in the first jig 14 at appropriate positions, and positioning pins 56 are inserted into the respective through holes 54. The positioning pin 56 includes a first pin-like member 58 and a second pin-like member 60 as shown in FIG.

  The first pin-shaped member 58 has a cylindrical shape as a whole, and a large-diameter portion 62 having an outer diameter larger than that of both end portions in the axial direction is formed at the central portion in the axial direction. Further, the first pin-shaped member 58 is provided with a screw hole 64 that opens in the axially upper end surface and extends in the axial direction.

  The upper side in the axial direction of the first pin-shaped member 58 is inserted into the through hole 54 from the back surface 34b side of the first jig 14. The insertion depth of the first pin-shaped member 58 is defined by the large-diameter portion 62 engaging with the back surface 34b of the first jig 14. As a result, the first pin-shaped member 58 protrudes from the back surface 34 b of the first jig 14 on the lower side in the axial direction than the large-diameter portion 62.

  On the other hand, the second pin-shaped member 60 has a cylindrical shape as a whole, and a screw shaft portion 66 that protrudes downward in the axial direction and can be screwed into the screw hole 64 is provided on the end surface on the lower side in the axial direction. It has been.

  By screwing the screw shaft portion 66 of the second pin-shaped member 60 into the screw hole 64 of the first pin-shaped member 58, the first pin-shaped member 58 and the second pin-shaped member 60. Projecting on both sides of the front and back surfaces 34a, 34b of the first jig 14 is fixed. In the present embodiment, the screwed end of the second pin-shaped member 60 has a second pin shape with respect to the projecting end surface of the annular projecting portion 68 projecting to the surface 34 a of the first jig 14 at the peripheral edge of the through hole 54. It is prescribed | regulated by the axial direction one end surface of the member 60 engaging. The annular protrusion 68 is not necessarily provided, and the second pin-shaped member is obtained by directly engaging one end surface of the second pin-shaped member 60 with the surface 34a of the first jig 14. Sixty screwed ends may be defined.

  Further, the first jig 14 is formed with a through hole 70 penetrating in the thickness direction at an appropriate position excluding the positions where the insertion holes 36a to 36c, the opening window 38, and the through hole 54 are formed. Note that the through hole 70 is not always necessary.

  The second jig 16 placed on the first jig 14 is made of a metal material such as stainless steel, and has a thick flat plate shape as shown in FIG. . Such a second jig 16 includes a plurality of fitting holes 72 into which the distal end portions 71 of the protruding portions 28 of the connection terminals 22 are fitted.

  As shown in FIG. 5, each fitting hole 72 has a substantially cross-sectional shape and is formed to extend straight in the thickness direction of the second jig 16 and open to both sides of the second jig 16 in the thickness direction. In addition, a pair of side surfaces 74a and 74a facing each other in the thickness direction (left and right direction in FIG. 5) of the distal end portion 71 of the connection terminal 22 to be fitted in each fitting hole 72 has a width direction (in FIG. 5). In the central portion (vertical direction), a concave groove 76 having a substantially constant rectangular cross-sectional shape and extending straight in the thickness direction of the second jig 16 and opening in the side surface 74 of the fitting hole 72 is formed. Thereby, even when the front-end | tip part 71 of the connection terminal 22 is provided with the protrusion which protrudes to the width direction outward, the insertion to the fitting hole 72 of the connection terminal 22 is attained.

  In addition, the pair of side surfaces 74 b and 74 b facing each other in the width direction (vertical direction in FIG. 5) of the distal end portion 71 of the connection terminal 22 fitted in each fitting hole 72 is spaced from the distal end portion 71. Opposite. In addition, the vicinity of the opening on the back surface 82 side of the second jig 16 of each fitting hole 72 is a tapered portion 83 whose opening area gradually increases as it goes outward in the thickness direction, and the tip of the connection terminal 22 A guiding function for fitting 71 into the fitting hole 72 is achieved.

  The second jig 16 is formed with five screw holes 78 penetrating in the thickness direction at appropriate positions. In each screw hole 78, a screw shaft portion 81 provided on a support projection 80 placed on the peripheral edge of the opening of the screw hole 78 on the back surface 82 side of the second jig 16 is screwed. ing. Thereby, the support protrusion 80 is provided on the back surface 82 of the second jig 16 at the position where the screw hole 78 is formed.

  Further, in the second jig 16, as described later, with the second jig 16 positioned and mounted on the first jig 14, a meat hole 84 in which the terminal of the base connector assembled to the first jig 14 is inserted and arranged. Is formed.

  Subsequently, the connecting terminal 22 is soldered to the conductive path 20b on the back surface side of the printed board 12 by using the soldering jig 10 constituted by the first jig 14 and the second jig 16 as described above, and the printed board with terminals. A method for manufacturing 86 will be described with reference to FIG.

  First, as shown in FIG. 8A, the connection terminals 22 and the like that are mounted upright on the front surface side of the printed circuit board 12 are assembled to the first jig 14 from the back surface 34 b side. At this time, as will be described in detail in FIG. 3, the connection terminal 22 is supported with the engaging portion 26 being superimposed on the protruding end surface of the pressing projection 44a in a state where the protruding portion 28 is inserted into the insertion hole 36a. As a result, in the connection terminal 22, the protruding portion 28 penetrates the insertion hole 36 a and protrudes substantially vertically from the surface 34 a of the first jig 14, and the base end portion 30 protrudes substantially vertically from the protruding end surface of the presser protrusion 44 a. In this state, it is assembled to the first jig 14. In this state, a gap is formed over the entire circumference between the outer peripheral surface of the protruding portion 28 and the inner peripheral surface of the insertion hole 36a (see FIGS. 3 and 4).

  Similarly, the connection terminals 85 for fuses and relays are assembled to the first jig 14 so as to pass through the insertion holes 36b and 36c, respectively, and protrude substantially vertically from the surface 34a of the first jig 14. . These connection terminals 85 are, like the connection terminals 22, intermediate portions in the length direction are bent in a crank shape to form locking portions, which are overlapped with the protruding end surfaces of the presser protrusions 44 b and 44 c. It is supported. A base connector 87 is also assembled through the opening window 38 provided in the first jig 14. The periphery of the pedestal connector 87 is held by a pedestal holding frame 48.

  Subsequently, as shown in FIG. 8B, the printed circuit board 12 is assembled from the back surface 34b side to the first jig 14 to which the connection terminals 22 and the like are assembled as described above. At that time, the first pin-shaped member 58 constituting the positioning pin 56 provided in the first jig 14 is inserted into the positioning hole 88 formed in the printed circuit board 12, and the first pin-shaped member 58 is inserted into the first pin-shaped member 58. The axial end face of the provided large diameter portion 62 is overlapped with the opening peripheral edge of the positioning hole 88 formed in the printed circuit board 12 (see FIG. 3). Thereby, the printed circuit board 12 is overlapped and assembled to the first jig 14 in a positioning state.

  Further, in the state where the printed circuit board 12 is assembled to the first jig 14 as described above, the connection terminal 22 is inserted through the through hole 32 formed in the printed circuit board 12 at the base end portion 30, and the locking portion. 26 is superimposed on the surface of the printed circuit board 12, and is sandwiched between the printed circuit board 12 and the pressing protrusion 44a (see FIG. 3). Although not shown, the base end portion of the connection terminal 85 and the base end portion of each terminal of the base connector 87 are also inserted into the substrate through hole 32 in the same manner as the connection terminal 22 shown in FIG. The protrusions 44 b and 44 c and the pedestal holding frame 48 are held between the printed circuit board 12.

  Subsequently, as shown in FIG. 8C, the first jig 14 to which the printed board 12 is assembled is turned upside down, and the first jig 14 is positioned and placed with respect to the surface of the printed board 12. After making it into the state, the second jig 16 is assembled to the first jig 14 from the surface 34a side. At that time, the second pin-shaped member 60 constituting the positioning pin 56 provided in the first jig 14 is inserted into the positioning hole 90 formed in the second jig 16, and the thickness of the second jig 16 is set. The projecting tip surfaces of the plurality of support projections 80 projecting on one surface in the direction are placed on the back surface 34b of the first jig 14 so as to overlap each other. As a result, the second jig 16 is positioned and placed on the first jig 14 with the back surface 82 separated from the surface 34 a of the first jig 14 by the protruding height of the support protrusion 80.

  In addition, in the state where the second jig 16 is assembled to the first jig 14 as described above, the distal end portion 71 of the connection terminal 22 is fitted into the fitting hole 72 of the second jig 16, and the outer peripheral surface of the distal end portion 71. The tip 71 of the connection terminal 22 is positioned by contacting the inner peripheral surface of the fitting hole 72. Concave grooves 76 and 76 are formed in each of the pair of side surfaces 74a and 74a of the fitting hole 72, and each of the other pair of side surfaces 74b and 74b of the fitting hole 72 and the tip 71. A gap is formed between the two. Thereby, the front-end | tip part 71 of the connecting terminal 22 is positioned by the edge part of the width direction both sides being clamped by the side surfaces 74a and 74a of the fitting hole 72 from the thickness direction both sides, respectively.

  Then, after assembling a mask jig (not shown) for soldering the connection terminals 22 to the back side of the printed circuit board 12 on which the first jig 14 and the second jig 16 are assembled as described above, The board | substrate 12 is conveyed to a conventionally well-known jet solder apparatus. In the jet soldering apparatus, the printed circuit board 12 moves above the molten solder injection port provided in the flow tank. As a result, molten solder is filled into the through hole 32 through which the proximal end portion 30 of the connection terminal 22 is inserted, and the molten solder adheres to the land 24. As a result, the base end portion 30 of the connection terminal 22 and the base end portions of the connection terminal 85 and the base connector 87 are soldered to the land 24 provided on the conductive path 20b on the back surface side of the printed circuit board 12.

  Thereafter, by removing the second jig 16 and then removing the first jig 14, as shown in FIG. 8 (d), the connection terminals 22 mounted upright on the surface side of the printed circuit board 12. A printed circuit board 86 with a terminal in which the proximal end 30 and the proximal end 30 of each terminal of the connection terminal 85 and the base connector 87 are soldered to the conductive path 20b on the back surface side of the printed circuit board 12 is obtained.

  In the soldering jig 10 as described above, the distal end portion 71 of the connection terminal 22 is fitted into the fitting hole of the second jig 16 with the protruding portion 28 of the connection terminal 22 loosely inserted into the insertion hole 36a of the first jig 14. Since it fits in 72, it becomes unnecessary to set the connection terminal 22 in the terminal accommodating hole formed in elongate like the past. Therefore, the operation of inserting / removing the connection terminal 22 with respect to the soldering jig 10 can be simplified, and deformation of the connection terminal 22 when the connection terminal 22 is inserted / removed with respect to the soldering jig 10 is avoided. I can do it.

  In particular, in the present embodiment, the distal end portion 71 of the connection terminal 22 is positioned such that only the edges on both sides in the width direction are substantially in contact with the inner peripheral surfaces 74 a and 74 a of the fitting hole 72. Therefore, the contact area of the connection terminal 22 to the inner surface of the jig is drastically reduced as compared with the jig having the conventional structure, so that the contact resistance to the connection terminal 22 when removing the jig is sufficient. Has been reduced. This further simplifies the operation of inserting / removing the connection terminal 22 into / from the fitting hole 72 and easily avoids deformation of the connection terminal 22 when the connection terminal 22 is inserted into / removed from the fitting hole 72. I can do it.

  Further, the insertion hole 36a and the fitting hole 72 are located apart by a predetermined distance in the overlapping direction of the first jig 14 and the second jig 16 (the direction in which the protruding portion 28 of the connection terminal 22 protrudes from the surface of the printed circuit board 12). doing. Therefore, even if an external force is applied to the base end portion 30 of the connection terminal 22 during soldering in a state where the distal end portion 71 is positioned by the fitting hole 72 of the second jig 16, the protruding portion 28 is inserted into the insertion hole. By contacting the inner peripheral surface of 36a, a centering effect is exhibited, and the inclination of the connection terminal 22 can be advantageously suppressed.

  In particular, in the present embodiment, since the first jig 14 is positioned and placed on the printed circuit board 12, the engaging portion 26 of the connection terminal 22 is sandwiched between the printed circuit board 12 and the pressing protrusion 44a. Tilt can be prevented more effectively.

  Further, since the fitting hole 72 into which the tip 71 of the connection terminal 22 is fitted is formed through the second jig 16 in the thickness direction, the tip 71 of the connection terminal 22 is fitted into the fitting hole 72. It is possible to prevent debris such as plating peeling when being put in the fitting hole 72. Therefore, maintenance of the soldering jig 10 is facilitated.

  Further, when removing the second jig 16, the pressing protrusion 44 a provided on the first jig 14 presses the locking portion 26 of the connection terminal 22 against the surface of the printed circuit board 12. The pull-out load exerted on the connection terminal 22 can be reduced.

  Next, a soldering jig 92 as a second embodiment of the present invention will be described with reference to FIG. In the following description, members and parts having the same structure as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and detailed descriptions thereof are omitted. To do.

  The soldering jig 92 according to the present embodiment has a rectangular flat plate-shaped connection terminal 94 extending straight instead of the connection terminal 22 bent in a crank shape at the intermediate portion in the longitudinal direction as shown in the first embodiment. It is used when soldering to a conductive path 20b provided on the surface side of the printed circuit board 12.

  The connection terminal 94 is inserted into the protruding portion 96 that protrudes substantially vertically from the surface of the printed circuit board 12 and the through-hole 32 formed in the printed circuit board 12 and protrudes from the back surface of the printed circuit board 12 substantially vertically. 12 is provided with a base end portion 98 soldered to the land 24 provided in the conductive path 20b on the back surface side. The protruding portion 96 is wider than the base end portion 98. Further, the protruding portion 96 is provided with a protruding piece 100 that protrudes outward in the width direction and overlaps and engages with the printed circuit board 12.

  As compared with the first jig (14) of the first embodiment, the first jig 102 of the present embodiment has a pressing projection 104 integrally formed on the opening peripheral edge on one side in the thickness direction of the insertion hole 36a. . Although not shown, the pressing protrusion 104 is also integrally formed at the opening peripheral edge on one side in the thickness direction of the other insertion holes 36b and 36c. When the first jig 102 is assembled to the printed circuit board 12, the pressing protrusion 104 presses the protruding pieces 100, 100 provided on the connection terminal 94 against the printed circuit board 12.

  The second jig 106 of the present embodiment has a bottomed structure in which the fitting hole 108 opens only on one surface side in the thickness direction of the second jig 16 as compared with the second jig (16) of the first embodiment. It is made into a shape. In the state where the second jig 106 is assembled to the first jig 102, the distal end portion of the protruding portion 96 (hereinafter referred to as the distal end portion 109) of the connection terminal 94 fitted in the fitting hole 108 is an outer peripheral surface. Is in contact with the inner peripheral surface of the fitting hole 108, and the protruding tip surface is superimposed on the bottom wall of the fitting hole 108.

  In such a soldering jig 92, a straight type connection terminal 94 mounted in an upright state on the surface side of the printed circuit board 12 can be soldered to the conductive path 20 b of the printed circuit board 12.

  In addition, as shown in FIG. 10, with respect to the connection terminal 110 which is a straight type connection terminal and is not provided with the protruding pieces 100, 100, presser protrusions (44a-c, 104) are provided on the first jig 14. There is no need to provide it. In this case, the bottom wall of the fitting hole 108 into which the distal end portion 109 of the connection terminal 110 is fitted presses the connection terminal 110 against the surface of the printed circuit board 12.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, you may make it provide the fitting hole with which the front-end | tip part of the upright connection terminal loosely inserted in the other insertion holes 36b and 36c is provided with respect to the 2nd jig 16 of the said embodiment.

  In the embodiment, the support protrusion 80 is not always necessary. For example, the outer diameter dimension of the annular protrusion 68 may be increased, and the back surface 82 of the second jig 16 may be superimposed on the protruding end surface of the annular protrusion 68. Alternatively, the back surface 82 of the second jig 16 may be superimposed on the front surface 34 a of the first jig 14.

  In the above-described embodiment, the first jig 14 and the presser protrusion 44a are formed separately. However, the presser protrusion can be configured by integrally forming a wall portion protruding from the opening peripheral edge of the insertion hole 36a. Good.

  Further, the insertion holes 36a and the fitting holes 72 do not necessarily need to be provided with the concave grooves 42 and 76 extending in the penetrating direction, and may have a shape similar to the cross-sectional shape of the connection terminal 22 to be inserted.

10: Soldering jig, 12: Printed circuit board, 14: First jig, 16: Second jig, 20b: Back side conductive path (conductive path), 22: Connection terminal, 30: Base end, 36a: Insertion Hole, 44a: Presser protrusion, 71: Tip, 72: Fitting hole, 86: Printed circuit board with terminal

Claims (3)

A soldering jig used when soldering a base end portion of a connection terminal to a conductive path formed on a printed circuit board,
A first jig provided with an insertion hole through which the connection terminal is inserted in a penetrating state while being positioned and mounted on the mounting surface of the printed circuit board,
A second jig provided with a fitting hole that is positioned and placed on the first jig, and in which the tip of the connection terminal protruding from the insertion hole of the first jig is positioned and fitted; and having,
The first jig protrudes toward the printed circuit board, and the base end portion is inserted through a through hole formed in the printed circuit board, and the overlapping portion on the surface of the printed circuit board is connected to the first jig. A soldering jig comprising a pressing projection for pressing against a printed circuit board .   2. The soldering jig according to claim 1, wherein a gap is formed at a portion where the insertion hole and the fitting hole are formed between the overlapping surfaces of the first jig and the second jig that are overlapped with each other. A method for manufacturing a printed circuit board with a terminal in which the connection terminal is electrically connected to a conductive path of the printed circuit board by soldering the base end portion of the connection terminal through a through hole formed in the printed circuit board. ,
The soldering jig according to claim 1 or 2 , wherein the first jig and the second jig are arranged on the mounting surface of the printed circuit board so as to overlap with each other, and the through hole of the printed circuit board is disposed. The connection terminal set by inserting the base end portion is inserted into the insertion hole of the first jig at the intermediate portion in the length direction, and fitted into the fitting hole of the second jig at the distal end portion. Soldering from the back side of the printed circuit board in a positioned state, a method for producing a printed circuit board with terminals.

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