JP2006216427A - Manufacturing method of substrate with terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a substrate with a terminal, in which an end part molding process and a press-fit fixing process can be carried out simultaneously, and furthermore, molding works on both ends in advance is not necessary when the terminal is supplied to the press fitting process. <P>SOLUTION: This manufacturing method of the substrate with the terminal is the manufacturing method of the substrate 20 with the terminal consisting of the terminal 2 that is press-fit fixed to the substrate 1, in which one end side 2b of the terminal 2 and the substrate 1 are stricken, and also the other end side 2a of the terminal 2 and a recessed part 13 of a pressing tool 11 having the recessed part 13 are stricken, then the one end side 2b of the terminal 2 is press-fitted to the substrate 1 by applying a press-fit fixing process in which the substrate 1 and the pressing tool 11 are moved relatively in the approaching direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a substrate with terminals in which terminals are press-fitted and fixed to the substrate.

Conventionally, a substrate with a terminal in which a terminal is press-fitted and fixed on the substrate is known.
FIG. 15A is an example of such a terminal-equipped substrate 20.
As shown in FIG. 15A, the terminal-equipped substrate 20 includes a substrate 1 such as a printed circuit board, and a plurality of terminals 2 that are press-fitted and fixed to the substrate 1 perpendicularly to the substrate surface. Note that a circuit pattern (not shown) serving as an electrical transmission path is formed on the substrate 1 so as to be electrically conducted between arbitrary terminals 2. Further, the terminal 2 has tapered tip portions 2a and 2b formed at both ends thereof, so that it can be easily press-fitted into the positioning hole 3 of the substrate 1 and can be easily inserted into a receiving part or the like (not shown). Yes.

  As shown in FIG. 16, protrusions 4 (so-called burrs, plating residue, whiskers, etc.) formed during the manufacturing process of the terminal 2 may remain on the tip portions 2 a and 2 b of the terminal 2. In particular, if such a protrusion 4 remains at the tip (2a in FIG. 15) of the terminal 2 on the side that is not press-fitted into the substrate 1, when it is used for electrical connection with a receiving part or the like, Problems such as poor mechanical connection and damage to receiving parts may occur. For this reason, conventionally, in order to remove such protrusions 4 and to chamfer the corners of the end portions of the terminals 2, molding processing has been performed (Patent Document 1).

JP 2003-109718 A

  However, in the method disclosed in Patent Document 1, in order to remove the protrusion 4 or chamfer the end portion, a molding process step of the end portion of the terminal 2 (hereinafter referred to as an end portion molding step) is performed in advance. Then, as a separate step, a step of press-fitting and fixing the terminal 2 to the substrate 1 (hereinafter referred to as a press-fitting and fixing step) is performed. Thus, performing the edge forming step and the press-fitting and fixing step as separate steps has been a factor in increasing the manufacturing time and manufacturing cost of the terminal-equipped substrate 20.

Further, in the end molding step, it is not known which one of the pointed ends 2a and 2b of the terminal 2 is the end on the side used for electrical connection with the receiving part, so that the protrusions 4 of both the pointed ends 2a and 2b. There is a problem that it is necessary to remove the material and it takes too much work.
The object of the present invention is to solve such a problem and to perform the end molding step and the press-fitting and fixing step at the same time, and at the time of supplying the terminal to the press-fitting and fixing step, both ends are molded. An object of the present invention is to provide a method of manufacturing a substrate with terminals that does not need to be added.

  The present invention has been made to solve the above problems, and the method of manufacturing a substrate with a terminal according to claim 1 is a method of manufacturing a substrate with a terminal formed by press-fitting and fixing a terminal to the substrate, While abutting one end side of the terminal and the substrate, butting the other end side of the terminal and the recessed portion of the pressure jig having a recessed portion, the substrate and the pressure jig are relatively close to each other. The one end side of the said terminal is press-fitted in the said board | substrate by performing the press-fit fixing process moved to a direction, It is characterized by the above-mentioned.

  As described above, according to the method for manufacturing a substrate with a terminal of the present invention, one end side of the terminal is press-fitted into the substrate, and the pressure input at that time is used to form the end portion of the terminal by the recessed portion of the pressure jig. By adding the processing, the end molding step and the press-fitting and fixing step can be performed simultaneously. In addition, during the press-fitting and fixing process, an end molding process can be performed on the end of the terminal that is not press-fitted into the substrate. Therefore, when supplying the terminal to the press-fitting and fixing process, both ends are molded. There is no need to add.

  According to a second aspect of the present invention, there is provided a method for manufacturing a substrate with a terminal according to the first aspect, wherein the substrate has a size at least in contact with the terminal at the press-fitting position of the terminal in the press-fitting and fixing step. The positioning hole is formed.

  By having such positioning holes, the terminals are guided by the positioning holes, so that it is easy to press-fit and fix the terminals at desired locations on the substrate.

  According to a third aspect of the present invention, there is provided a method for manufacturing a substrate with a terminal according to the first or second aspect, wherein the recess has a substantially U-shaped cross section that is axisymmetric in at least one direction. And

  By using such a recess, when the terminal is press-fitted and fixed on the substrate, the end of the terminal that is in contact with the recess is recessed regardless of the amount of pressing into the recess of the terminal. It is positioned so as to match the central axis of symmetry of the part. Therefore, variations in the fixing angle of each terminal on the substrate are reduced.

  A method for manufacturing a substrate with a terminal according to claim 4 is the method according to any one of claims 1 to 3, wherein a position regulating member is provided between the substrate and the pressing jig in the press-fitting and fixing step. And the terminal is moved along the position regulating member.

  By such a position regulating member, the terminal is guided to a desired position of the substrate or the recess.

  The method for manufacturing a substrate with a terminal according to claim 5 further includes a suction step of sucking and removing the protruding portion peeled off from the terminal in the method according to any one of claims 1 to 4. To do.

  By such a suction process, it is possible to prevent the protruding portion peeled off from the terminal from adversely affecting the next terminal press-fitting process even if the press-fitting process is performed continuously.

  The method for manufacturing a substrate with a terminal according to claim 6 is the method according to any one of claims 1 to 5, wherein a plurality of recesses are formed in the pressure jig, and a plurality of terminals are formed in the press-fitting and fixing step. Are press-fitted and fixed together on the substrate.

  Thus, by press-fitting and fixing a plurality of terminals in a lump, the end portions of the plurality of terminals can be molded together and a terminal-equipped substrate can be manufactured.

  According to the method for manufacturing a substrate with a terminal of the present invention, the end molding step and the press-fitting and fixing step can be performed at the same time, and when the terminal is supplied to the press-fitting and fixing step, a molding process is applied to both ends. There is no need to keep it.

An embodiment is described about a manufacturing method of a substrate with a terminal of the present invention.
First, a chain terminal 5 as shown in FIG. 1 is prepared. This is manufactured by forming a constricted portion 6 by crushing or the like at an appropriate position of a wire having a simple shape without constriction.
Here, a wire having a square cross section is used.

Twist cutting as shown in FIG. 2 (a) at the constricted portion 6 of the chain terminal 5, pulling in the longitudinal direction of the chain terminal 5 as shown in FIG. 2 (b), and FIG. 2 (c). A terminal 2 having a square cross section in which the tip portions 2a and 2b are formed is obtained by cutting by a method such as applying shear stress in the width direction of the chain terminal 5 as shown (FIG. 3).
At the time of the above process, as shown in FIG. 4, the protrusions 4 due to the cutting at the constricted portion 6 may be formed at the tip portions 2 a and 2 b of the terminal 2. The terminal 2 has corners (2c to 2f).

Next, a substrate 1 as shown in FIGS. 5A, 5B, and 6 is prepared.
As shown in FIGS. 5A and 5B, the substrate 1 has circuit patterns 1b and 1c made of copper-based metal formed on and under a plate material 1a made of glass epoxy resin, and the circuit patterns 1b and 1c. Solder resist layers 1d and 1e made of a resin that protects the film are formed. In the substrate 1 formed in this manner, a positioning hole 3 is formed at a press-fitting and fixing position of the terminal 2 by an appropriate method such as punching.

Although the cross-sectional shape of the positioning hole 3 can be selected as appropriate, in this embodiment, as shown in FIG. 6, the positioning hole 3 is formed in a circular shape and has a diameter shorter than the length of the diagonal line of the terminal 2. .
By defining the shapes and dimensions of the terminal 2 and the positioning hole 3 in this manner, the corners 2c, 2d, 2e, and 2f of the terminal 2 are pressed against the wall surface of the positioning hole 3 of the substrate 1 in the press-fitting and fixing process described later. Therefore, the mechanical and / or electrical connection pressure between the terminal 2 and the substrate can be ensured.

Now, a press-fitting and fixing step is performed on the substrate 1 and the terminal 2 thus prepared as shown in FIG. 10 by using a press-fitting and fixing device as shown in FIGS.
7 to 10, the x axis, the y axis, and the z axis are the same axes.
FIG. 7 shows a part of the press-fitting device used in the press-fitting step.
As shown in FIG. 7, the press-fitting and fixing device has a position regulating block 7, a terminal pressurizing block 8, and a substrate pressurizing block 15.

  The position restricting block 7 has a plurality of position restricting members 9, and the position restricting members 9 are formed in a rectangular parallelepiped shape that is long in the x-axis direction, and are arranged in parallel in the y-axis direction. Since the position regulating member 9 serves to guide the terminal 2 toward the terminal pressurizing block 8, the position regulating member 9 is disposed at an interval corresponding to the width of the terminal 2 plus a clearance in the y-axis direction.

FIG. 8 is a plan view of the terminal pressurizing block 8 as viewed from the upper side in the z direction in FIG. As shown in FIGS. 7 and 8, the terminal pressure block 8 includes a base 10 and a plurality of pressure jigs 11. The pressure jig 11 has a rectangular parallelepiped shape that is long in the y-axis direction, and a plurality of pressure jigs 11 are arranged and fixed in parallel on the base 10.
The base 10 is formed with suction holes 12 for sucking debris such as the protrusions 4 that are peeled off from the pointed ends 2a and 2b of the terminal 2. The suction hole 12 is connected to a suction device (not shown) on the lower side in the z direction in FIG. 7 and is configured to suck and remove debris such as the protrusions 4 falling on the terminal pressurizing block 8 through the suction hole 12. It has become.
The pressure jig 11 has a plurality of recessed portions 13 provided in the y-axis direction. As shown in FIG. 8, the recessed portion 13 is formed at all positions corresponding to the terminal 2 press-fit fixing position of the substrate 1.
As shown in detail in FIG. 9, the recess 13 is formed in a substantially U-shaped cross section that is symmetric with respect to the y-axis direction around the axis za in the z-axis direction. Moreover, as shown in FIGS. 7 and 8, the recess 13 has a shape opened on both sides in the x-axis direction, and the suction hole 12 of the base 10 is disposed adjacent to the opening. Yes.

The board pressure block 15 has a terminal relief formed of a through hole corresponding to the position where each terminal 2 is press-fitted so that the terminal 2 tip 2a (or 2b) does not interfere with the board 1 when it penetrates the board 1. A portion 15a is formed.
Such a press-fitting and fixing device is used in a state in which the position restricting block 7 and the terminal pressurizing block 8 are overlapped in the press-fitting and fixing step, and the substrate 1 is sandwiched between the position restricting block 7 and the substrate pressurizing block 15. The

FIG. 10A to FIG. 10D show a press-fitting and fixing step for fixing the substrate 1 and the terminal 2 using such a press-fitting and fixing device (only a part of the device is shown).
First, as shown in FIG. 10A, the position regulating block 7 is arranged and fixed on the pressure jig 11 of the terminal pressure block 8.
In this state, the plurality of terminals 2 are placed in contact with the recessed portions 13 of the terminal pressurizing block 8 while being guided by the position regulating member 9.
Further, the substrate 1 is disposed on the side of the tip 2b of the terminal 2, and the substrate pressure block 15 is disposed in contact with the substrate 1 on the upper side in the z-axis direction.
At this time, the substrate 1 is accurately positioned in the x-axis and y-axis directions with respect to the press-fitting and fixing device.

In this state, as shown in FIG. 10B, when the terminal pressurizing block 8 is fixed and the substrate pressurizing block 15 is moved downward in the z-axis direction, the substrate 1 and the recessed portion 13 are moved. Are relatively moved in the proximity direction.
In such a push-down movement of the substrate pressing block 15, a mechanical pressure (pressure input) is applied to such an extent that the press-fitting between the terminal 2 and the substrate is smoothly performed.

The tip 2b of the terminal 2 is guided into the positioning hole 3 of the substrate 1 by such a downward movement of the substrate pressing block 15 and the application of pressure input, and is press-fitted into the positioning hole 3 so as to be on the upper side of the substrate 1 in the z-axis direction. And is inserted into the terminal relief portion 15a of the substrate pressure block 15.
Similarly, by pressing down the substrate pressing block 15 and applying a pressure input, the tip 2 a side of the terminal 2 is pushed toward the back of the recess 13 of the pressing jig 11, and the protrusion 4 on the tip 2 a side. Is peeled or crushed and integrated with the tip 2a.
At this time, the pointed portion 2a of the terminal 2 is plastically deformed by being pressed against the recessed portion 13, and a round shape along the substantially U-shape of the recessed portion 13 is formed (see FIGS. 11A and 11B). That is, chamfering (R attachment) of the tip 2a is performed.
When the pointed portion 2a of the terminal 2 is molded by the recess 13, the position restricting member 9 restricts the position of the terminal 2 on both sides in the y-axis direction with a narrow clearance, so that the terminal 2 in the y-axis direction is restricted. Since the swinging and the positional deviation are restricted, the push of the tip 2 of the terminal 2 into the back is smoothly performed.

Thereafter, as shown in FIG. 10C, when the distance between the pressing jig 11 and the substrate 1 reaches a specified value, the movement of the substrate pressing block 15 in the z-axis direction is stopped.
At this time, each terminal 2 is sufficiently press-fitted into the substrate 1, and as shown in FIG. 6, at the corners (2c to 2f) of the terminal 2, the terminal 2 is in pressure contact with the wall surface of the positioning hole 3 so that sufficient connection is achieved. Pressure is secured.
Further, the pointed portion 2a of the terminal 2 has a preferable shape without the projection 4 and having a chamfered corner.

Thereafter, as shown in FIG. 10 (d), when the substrate pressing block 15 and the substrate 1 are moved upward in the z-axis direction, the terminal 2 is press-fitted and fixed to the substrate 1 together with the pressing jig 11 and It is extracted from between the position regulating members 9.
In this way, as shown in FIG. 12, the terminal-equipped substrate 20 in which the terminals 2 are vertically press-fitted and fixed on the substrate 1 is completed.
In this way, by press-fitting and fixing the plurality of terminals 2 to the substrate 1 in a lump, the end portions 2a can be formed and processed for the plurality of terminals 2 and the terminal-equipped substrate 20 can be manufactured.

7 and 8 is performed without any breakage or at an appropriate time interval during the above-described press-fitting and fixing step.
Therefore, even when debris such as the protrusions 4 peeled off from the terminals 2 remain on the dent 13, the dent 13 is sucked from the suction hole 12 of the base 10 through the opening in the x-axis direction of the dent 13. It is quickly removed from the part 13.
By such a suction process, it is possible to prevent debris such as the protrusions 4 peeled off from the terminal 2 from adversely affecting the subsequent press-fitting and fixing process of the terminal 2 even if the above-described press-fitting and fixing process is performed. .

  In the terminal-equipped substrate 20 manufactured by such a method, the relative positions in the x-axis and y-axis directions between the recess 13 and the substrate 1 (and its positioning hole 3) are precisely positioned.

  Therefore, very accurate positioning of the tip 2a of the terminal 2 with respect to the substrate 1 is performed at the position of the recess 13 having a predetermined interval from the substrate 1 in the z-axis direction during the press-fitting and fixing process. The fixed angle of the terminal 2 with respect to 1 is defined vertically with very high accuracy.

In addition, the recess 13 has a substantially U-shaped cross section that is axisymmetric with respect to the axis za in the y-axis direction.
Therefore, as shown in FIG. 10C, when the press-fitting and fixing of the terminal 2 to the substrate 1 is completed, the position of the tip 2a in the z-axis direction is slightly different for each terminal 2 on the same substrate 1 or for each substrate 20 with terminals. Even if there is a variation, the central axis of the tip 2a is always located on the axis za, and all the terminals 2 are fixed perpendicularly to the substrate 1 with very high accuracy.

  Further, as shown in FIG. 13, the corner portions 2c to 2f of the terminal 2 are in physical contact with the circuit patterns 1b and 1c formed on the substrate 1 at the positioning holes 3 by the press-fitting and fixing process. Electrical connection between 1b and 1c and the terminal 2 is ensured.

In the present embodiment, the positioning hole 3 is a through hole formed in a penetrating state on both surfaces of the substrate 1 here, but at least on the side where the terminal 2 is press-fitted as shown in FIG. It only has to be formed.
Further, as shown in FIG. 14B, in some cases, if the copper plating layer 1f is formed on the inner surface of the positioning hole 3 after the positioning hole 3 is formed and before the press-fitting and fixing step, the circuit pattern 1b and the circuit pattern are formed. The electrical connection of 1c can be sufficiently taken.
Further, as shown in FIGS. 14C and 14D, after performing the press-fitting and fixing step, the tip 2b and the circuit pattern 1c of the terminal 2 and / or the terminal 2 and the circuit pattern on the side of the tip 2a. By forming the solder layers 14a and 14b with respect to 1b, electrical connection between the terminal 2 and the circuit patterns 1b and 1c can be more sufficiently secured.
The configuration and dimensions of the substrate 1 and the terminals 2 are not limited to those described above. For example, the shape of the terminals 2 may be circular, and the substrate 1 may be a simple plate material. . If the material of the substrate 1 is very flexible as compared with the material of the terminal 2, for example, a material such as a foaming resin, the press-fitting and fixing can be sufficiently performed, and therefore the positioning hole 3 does not need to be formed.
In addition, the shape of the recess may be a so-called crucible shape in which, for example, a substantially U-shaped cross section shown in FIG.

The terminal 2 was actually press-fitted and fixed to the substrate 1 by the press-fitting and fixing process described in the above-described embodiment.
For example, the substrate 1 is a glass epoxy substrate formed with a thickness of about 1 mm, and the positioning holes 3 having a diameter of 0.8 mm are formed in a penetrating state at equal intervals of 10 × 10.
The terminal 2 is made of 7/3 brass with tin plating, and is formed with a cross-sectional square side of 0.64 mm and a length of 10 mm.
In this case, since the length of the diagonal line in the cross section of the terminal 2 is about 0.90 mm, the corners 2c to 2f on the side surface of the terminal 2 are press-fitted into the substrate 1 by about 0.1 mm by performing the press-fitting and fixing step. did.
The press-fitting and fixing step was performed so that the protruding length of the terminal 2 on the substrate 1 was about 7 mm on the pointed end 2a side. At this time, the angle of the terminal 2 with respect to the substrate surface of the substrate 1 was an error within 0.1 mm.
The pull-out strength of the terminal 2 with respect to the substrate 1 thus manufactured was measured with a push-pull gauge and found to be about 14N.
Therefore, it was found that a sufficient connection pressure was ensured mechanically.
In addition, it was electrically confirmed that the allowable current value of all the terminals 2 on the substrate 1 was 7A, and the electrical connection was sufficiently ensured.

It is drawing explaining the manufacturing method of the board | substrate with a terminal of embodiment of this invention, Comprising: It is a side view of a chain terminal. It is a side view explaining the cutting method of the chain terminal of FIG. 1, (a) shows the method by twisting, (b) shows the method by tension, (c) shows the method by application of shear stress. It is a side view of the terminal used for the substrate with a terminal of this embodiment. It is a perspective view which shows the edge part of the terminal of FIG. It is drawing explaining the manufacturing method of the board | substrate with a terminal of embodiment of this invention, Comprising: (a) is a partial perspective view of a board | substrate, (b) is a partial cross section figure of a board | substrate. It is drawing explaining the manufacturing method of the board | substrate with a terminal of embodiment of this invention, Comprising: It is sectional drawing which shows the fixed state of the terminal on a board | substrate in a part of board | substrate. It is drawing explaining the manufacturing method of the board | substrate with a terminal of embodiment of this invention, Comprising: It is a partial perspective view of a press-fit fixing apparatus. It is a top view which shows a part of press fit fixing apparatus of FIG. 7 from an upper side. It is sectional drawing which shows a part (pressurization jig | tool) of the press-fit fixing apparatus of FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing explaining the manufacturing method of the board | substrate with a terminal of embodiment of this invention, Comprising: (a)-(d) is explanatory drawing which shows a manufacturing method, respectively. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing explaining the manufacturing method of the board | substrate with a terminal of embodiment of this invention, Comprising: (a) is a perspective view which shows the edge part of the terminal of the manufactured board | substrate with a terminal, (b) is the side view. is there. It is a perspective view which shows the whole board | substrate with a terminal. It is sectional drawing which shows a part of board | substrate with a terminal of FIG. It is drawing explaining the manufacturing method of the board | substrate with a terminal of other embodiment of this invention, Comprising: (a) is sectional drawing of a board | substrate with a terminal, (b) is sectional drawing of a board | substrate, (c) is It is sectional drawing of a board | substrate with a terminal, (d) is sectional drawing of a board | substrate with a terminal. (A) is a perspective view of a general substrate with a terminal, (b) is a perspective view showing a manufacturing method of a general substrate with a terminal. It is explanatory drawing of the projection part formed in the edge part of a terminal.

Explanation of symbols

1 Substrate
1a Base material
1b, 1c circuit pattern
1d, 1e Solder resist 2 terminal
2a, 2b Point
2c, 2d, 2e, 2f Corner 3 Positioning hole 4 Protrusion 5 Chain terminal 6 Constriction 7 Position restriction block 8 Terminal pressure block 9 Position restriction member 10 Base 11 Pressure jig 12 Suction hole 13 Recess 14a, 14b Solder layer 15 Board pressure block 15a Terminal relief 20 Board with terminal

Claims (6)

A method for manufacturing a substrate with a terminal formed by press-fitting and fixing a terminal to a substrate,
While abutting one end side of the terminal and the substrate, butting the other end side of the terminal and the recessed portion of the pressure jig having a recessed portion, the substrate and the pressure jig are relatively close to each other. A method of manufacturing a substrate with a terminal, wherein one end side of the terminal is press-fitted into the substrate by performing a press-fitting and fixing step of moving in a direction.   2. The manufacturing of a substrate with a terminal according to claim 1, wherein, in the press-fitting and fixing step, a positioning hole having a size that is at least in contact with the terminal is formed in the press-fitting position of the terminal. Method.   The method for manufacturing a substrate with a terminal according to claim 1, wherein the recess has a substantially U-shaped cross section that is axisymmetric in at least one direction.   4. The method according to claim 1, wherein, in the press-fitting and fixing step, a position restricting member is provided between the substrate and the pressure jig, and the terminal is moved along the position restricting member. The manufacturing method of the board | substrate with a terminal in crab.   The method for manufacturing a substrate with a terminal according to any one of claims 1 to 4, further comprising a suction step of sucking and removing the protruding portion peeled from the terminal. 6. The terminal according to claim 1, wherein a plurality of recesses are formed in the pressing jig, and the plurality of terminals are press-fitted and fixed together on the substrate in the press-fitting and fixing step. A method for manufacturing a substrate with a substrate.

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