JPH04102575U - wiring structure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of this invention is to provide a wiring structure for a printed wiring board that prevents peeling of patterns and cutting of lead wires of electronic components due to heat when a large current circuit is installed. . [Structure] This invention consists of a printed wiring board (1) having a wiring pattern and an insertion hole (9) provided at an arbitrary position, and a bent portion (1) formed of a conductor by bending a part of the conductor. 10) and a wiring member (8), the bent part (10) of the wiring member (8) is inserted into the insertion hole (9) of the printed wiring board (1) to form the wiring pattern and the wiring member (8). ) are connected.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is based on the installation of high-current circuits on printed wiring boards in automobile electrical units, etc. The present invention relates to a wiring structure of a printed wiring board when the wiring structure is used.

0002

[Conventional technology]

Mounting semiconductors 2 such as power transistors and power FETs on printed wiring board 1 As shown in FIG. 8, the lead wires 3 of the semiconductor 2 are attached to the printed wiring board 1 separately solder and electrically connect to noise absorption capacitor 4 via pattern 5. What has been done is known. Semiconductor 2 is placed on heat sink 6 . Code 7 is input/output It is a connector.

0003

[Problem that the idea aims to solve]

Since a large current flows between the semiconductor 2 and the capacitor 4, the pattern 5 becomes heated. There is a risk that the lead wire 3 will peel off, and if external force is applied to the lead wire 3, the lead wire There was also a risk that wire 3 would be cut, resulting in a lack of reliability.

0004 Therefore, this idea prevents the pattern from peeling off due to heat when installing a large current circuit. To provide a wiring structure for a printed wiring board that prevents lead wires of electronic components from being cut. aimed to.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the first idea is to connect the wiring pattern and the A printed wiring board having an insertion hole formed of a conductive material and a conductive material formed of a conductive material. The printed wiring board is composed of a wiring member that is partially bent to form a bent part. The bent portion of the wiring member is inserted into the insertion hole of the board to connect the wiring pattern and the It is connected to the wiring member. The second idea is to engage the lead wire at the bent part. In the third invention, the engaging part is formed by cutting out a part of the bent part. It is what was done. The fourth idea is to provide a first insertion hole and a second insertion hole in the wiring pattern. and forming the bent part into a columnar shape having a cross section substantially the same as the shape of the first insertion hole, Insert the bent part into the first insertion hole and the lead wire of the electronic component into the second insertion hole, and , the lead wire, and the wiring pattern are connected to each other.

[0006]

[Effect]

With this idea, the bent part of the wiring member is inserted into the insertion hole of the printed wiring board and connected. Therefore, it is possible to pass a large current, and the strength is also improved compared to pattern connection. . In addition, the engaging part of the wiring member is provided with an engaging part that engages with the lead wire of the electronic component. It is possible to reliably and robustly solder both wiring members and electronic components with Become.

[0007]

【Example】

Preferred embodiments of this invention will be described below with reference to the drawings.

[0008] FIG. 1 is a diagram showing how a wiring structure according to the present invention is assembled. Figure 2, Figure 3 FIG. 1 is a diagram showing a completed state of assembly of a wiring structure according to the present invention. In addition, conventional techniques Explanation of the same parts as the technique will be omitted.

[0009] As shown in FIGS. 1(a) and (b), 8 is a wiring formed of a conductive material such as a copper plate. It is a member. 10, a part of the wiring member 8 is bent downward and molded to form a printed wiring board. This is a bent portion inserted into an insertion hole 9 drilled in the wire board 1. 11 is the bending portion 10; This is an engaging portion that is formed by cutting out a portion and engages with the lead wire of an electronic component. this bend A bent part 10' and an engaging part 11' are also formed at the opposite end facing the part 11. . 14 is for attaching the wiring member 8 to the input/output connector 7 and the printed wiring board 1. It is a mounting hole.

0010 In such a configuration, the bent portion 10 of the wiring member 8 is installed on the printed wiring board 1. The engaging portion 11 is inserted into the girder insertion hole 9 and formed at the bent portions 10 and 10'. , 11' are engaged with the lead wires 3 and 4A of the semiconductor 2 and the capacitor 4. Wiring member 8 The lead wire 7A of the input/output connector 7 is attached to the attachment hole 14 of. Print semiconductor 2 The state in which the semiconductor 2 is attached to the wiring board 1 is as shown in Figure 2, and the lead wires of the semiconductor 2 are 3 engages with the engagement portion 11 of the wiring member 8. In addition, in FIGS. 1 and 2, the wiring member 8 and the lead Only one lead wire 3 of the semiconductor 2 is connected to the wiring section so that the engagement state with the lead wire 3 can be clearly seen. The figure shows the state in which the lead wire 3 is engaged with the lead wire 8, and the other lead wires 3 are omitted, but they are shown in FIG. Other lead wires can also be wired using the wiring member 8 as shown in FIG. figure 4, FIG. 5, and FIG. 6 are other embodiments of the present invention.

[0011] In FIG. 4, the tip end portion 12 of the bent portion 10 of the wiring member 8 is provided with an inclination. like this By doing so, when mounting the wiring member 8 on the printed circuit board 1, the bent portion 10 is inserted into the insertion hole. 9 makes it easier to enter.

0012 FIG. 5 shows the width or diameter of the lead wire 3 that engages inside the engaging portion 11 of the wiring member 8. By making it slightly smaller than (A<B), the lead wire 3 can be held between the engaging part 11. It was designed so that

[0013] In addition, in FIGS. 6(a) and 6(b), the bent portion 10 is formed into a substantially V-shape by press working. As shown in the cross-sectional view of FIG. 6(b), the bent portion 10 and the lead wire 3 are aligned. It is inserted into the insertion hole 9 together and fixed. By doing this, the V of the bent portion 10 The lead wire 3 can be held between the shaped portions (which become the engaging portions 11). In addition, the insertion hole 9 is It can be made circular, and the mounting strength is also improved. Attach each part as shown in Figure 2. After that, the wiring member 8 and the semiconductor 2 such as a power transistor are reliably and firmly soldered. I can do it. In this example, are the lead wires 4A of the capacitor 4 and the wiring member 8 secure? Can be soldered firmly. In addition, the lead wire 7A of the input/output connector 7 is also connected to the wiring member 8. Attach securely.

[0014] Furthermore, as shown in FIGS. 7(a) and 7(b), the lead of the semiconductor 2 is placed on the printed circuit board 1. An insertion hole 14 into which the cable 3 is inserted, and an insertion hole 15 into which the bent portion 10 of the wiring member 8 is inserted. and a wiring pattern 16 connecting the insertion holes 14 and 15. is formed into a prismatic or round column shape by press working.

[0015] Insert the lead wire 3 into the insertion hole 14, insert the bent part 10 into the insertion hole 15, and then Solder is applied to the wiring pattern 16 in the same manner as soldering. If you do this, you can There is no need to drill a specially shaped insertion hole on the main board 1, and installation can be done by normal soldering. That's fine. In addition, as in the embodiment shown in FIG. If there is a bend, the solder will not go up during soldering and a connection failure will occur. If it is formed by press processing, there will be no gaps and poor soldering can be prevented. still, The wiring pattern 16 is made of ordinary copper foil, but if the insertion holes 14 and 15 are provided close to each other, In both cases, the resistance value can be lowered by applying solder to the wiring pattern 16. There is no problem even if a large current flows.

[0016]

[Effect of the idea]

As explained above, according to the wiring structure of the present invention, a part of the conductor is bent. Insert the wiring member having the bent portion into the insertion hole provided on the printed wiring board. Since it is inserted and electrically connected, the current is higher than when wiring with only the wiring pattern. can flow. Also, since there is a wiring member instead of a conventional pattern, the pattern No peeling of turns occurs at all. Further, a part of the bent part is cut out to provide an engaging part, Since the lead wire of the electronic component is engaged here, no external force is applied to the lead wire of the semiconductor. There is no risk of lead wires being cut even when Can be soldered firmly and robustly.

[Brief explanation of drawings]

FIG. 1(a) is an exploded perspective view showing a state before mounting a semiconductor, and FIG. 1(b) is a perspective view of a wiring member.

FIG. 2 is a perspective view when installed.

FIG. 3 is a perspective view of a state in which two wiring members are used.

FIGS. 4(a) and 4(b) are diagrams showing other examples of wiring members.

FIGS. 5(a) and 5(b) are diagrams showing other examples of wiring members.

FIGS. 6(a) and 6(b) are diagrams showing other examples of wiring members.

FIGS. 7(a) and 7(b) are diagrams showing other examples of wiring members.

FIG. 8 is a perspective view showing a conventional example.

[Explanation of symbols]

1 Printed wiring board 2 Semiconductor 3 Lead wire 4 Capacitor 8 Wiring components 9 Insertion hole 10 Bend part 11 Engagement part

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[Procedural amendment]

[Submission date] February 3, 1992

[Procedural amendment 1]

[Name of document to be amended] Specification

[Name of item to be corrected] Brief explanation of the drawing

[Correction method] Change

[Correction details]

[Brief explanation of drawings]

FIG. 1(a) is an exploded perspective view showing a state before mounting a semiconductor, and FIG. 1(b) is a perspective view of a wiring member.

[Fig. 2] Perspective view when installed.

FIG. 3 is a perspective view of a state in which two wiring members are used.

FIG. 4 is a diagram showing another example of the wiring member .

FIG. 5 is a diagram showing another example of the wiring member .

FIG. 6 (a) and (b) are diagrams showing other examples of wiring members.

FIG. 7 (a) and (b) are diagrams showing other examples of wiring members.

FIG. 8 is a perspective view showing a conventional example.

Claims (4)

[Scope of utility model registration request] 1. A printed wiring board having a wiring pattern and an insertion hole provided at an arbitrary position, and a wiring member formed of a conductive material by bending a part of the conductive material to form a bent part. . A wiring structure, wherein the bent portion of the wiring member is inserted into the insertion hole of the printed wiring board to connect the wiring pattern and the wiring member. 2. The wiring structure according to claim 1, wherein the bent portion has an engaging portion that engages with a lead wire of an electronic component. 3. The wiring structure according to claim 1, wherein the engaging portion of the bent portion is formed by cutting out a part of the bent portion. 4. The wiring pattern has a first insertion hole and a second insertion hole.
an insertion hole is provided, the bent portion is formed into a columnar shape having a cross section approximately the same shape as the first insertion hole, and the bent portion is inserted into the first insertion hole and inserted into the second insertion hole. 2. The wiring structure according to claim 1, wherein a lead wire of said electronic component is inserted into said bent portion, said lead wire, and said wiring pattern are connected to said bent portion.