JPS6273583A - Mounting method for terminal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a terminal mounting method for accommodating a printed wiring board IC1vl. [Technical Background of the Invention] In general, this virtuous terminal mounting method Using a terminal whose legs have been burnt against thick wood, insert the leg metal into the terminal mounting hole of the printed wiring cane, bend it with a VC punch, and fix it. Figure 5 shows a front view of terminal l, Figure 5 β) shows a front view of terminal l, and Figure 511 (Q
(1) Bottom = Wt indicated.

Figure 6 (8) shows the conventional terminal installation method, Figure 6 (aVc Figure 6, Figure 4, Figure 4). Fold back the plate material of the leg part 2 of the terminal 1 to form four parts with a V4-fold in the center.

Printed wiring & 3 terminal mounting holes 41C as shown in Figure 6
After stretching, press the punch 5 having an angle aD≦obtuse angle on the recess in the direction of the arrow. Figure 6 shows r
2 to 9 with a 1-gold printed wiring board 31C fixed to the terminal. , Punch 5? lI: Press 0 Adjust the pressing force and adjust the strength of the fixed temperature at vC and 7t.

[Problems with background technology]

However, with this method, it is deformed only in the n, n1s2f2 directions, and the 2-point V-shaped pressure force is applied easily. Therefore, in order to fix it on the terminal 1, the punch 5r is pressed frequently.6 Case 1 /C, If the pressing force θS of 7 is too high, it will exceed the durability of the legs 2 or a printed wiring board 3 (・, l1141&B2
In some cases, the printed wiring board 3 was damaged. (Since the formed leg part 2 is bent to fix the printed wiring board 3 and the terminal l, the soldering direction 31 of the printed wiring board 3 may be affected by the influence Wt due to variations in the pressing force of the punch 5, etc.) Height A&C variation θ1 to the tip of part 2
〇 Generally, fciV is printed wiring inside equipment that requires miniaturization.
r, 7'j There are cases where it is necessary to scrape off the tip.

[Purpose of the invention]

The present invention eliminates the above-mentioned drawbacks, eliminates damage to the terminal legs or printed wiring board, and eliminates the problem of uneven island size from the solder orientation of the wiring board to the tip of the legs. The purpose of the present invention is to obtain a method for attaching a terminal that is difficult to attach. 'l: Bonte gold 1ll
The above object is achieved by inserting the terminal into the cylinder of one part and deforming the leg part into a conical shape to fix the terminal to the printed wiring board. One embodiment will be explained with reference to Figs. As shown in the diagram, the legs 7H of the IC terminal 6 and the plate material t#
It is formed into a cylindrical shape with the center bent from lI41I [rod-shaped hk]. As shown in FIG. Punch 8 for squaring the tip of an acute conical shape as shown in the figure.
Place the light weight into the cylinder of the leg part 7, and insert the inserter Φ in the direction of the arrow.

Print on the arrow With temporary 3, terminal 6 and t part 11, punch & ii in the direction of the arrow in the figure 3 (i.e. the axial direction of the leg 7)
As shown in FIG. 4, the leg 7μ, which is pressed in all directions when viewed from the tip, is bent into a conical shape and fixed to the terminal 6 and printed wiring board 3 in this way. Then, since the tip of the punch 8 is cone-shaped, the amount (that is, the angle) by which the leg portion 7 is bent is reduced, and one leg portion 7 is bent. The fixing force a stamp is distributed around the hole in the wiring board Vr-dispersed, so the printed image is temporarily damaged? In the history of 6Q, there are few legs to bend 8141M7 (therefore, there is no need to worry about making the length of leg 7 as long as a gold mail. Therefore, punch 81jr: Shadows due to VC such as variations in pressing force * Then solder printed wiring board 3 4 and 31 to leg 8
157 is less likely to vary in the ease of reaching the tip of the O3. It may be formed in a cylindrical shape, and is not particularly limited to this shape.

〔Effect of the invention〕

Formed in the shape of a 9-punch Kai terminal, insert it into the 11i41 section of the terminal, and then insert the leg into the conical shape (deform the terminal to print the M&l
V is applied to fix C. Since the tip of the punch is cone-shaped, the leg S is deformed into a cone-shaped shape, and when it is bent, μ decreases, causing damage to the leg and the printed wiring board.
That's gone Φ. Then, the length of the tube from Ii'1 to the base of the leg is θS, and the method for installing the remote terminal is obtained.

[Brief explanation of drawings]

FIGS. 1 to 4 are 6 diagrams illustrating an embodiment of the invention, in which the terminal 6 is shown in FIG.
A partial cross-sectional view of how the terminal 6 is inserted into the terminal housing of the wiring board 3, Figure 3 shows the punch 8t being inserted, and Figure 4 shows the terminal 6 and the printed wiring board 3 being fixed. Partial sectional view, Fig. 5a: Conventional terminal lfI: water diagram, Fig. 6 is a partial cross-sectional view for explaining the conventional terminal installation method. ...3141 parts, 3...Printed wiring board, 4...Fist/terminal mounting hole, 5...Punch,
6...Terminal 76m @ leg. 8...1111 punch

Claims (1)

[Claims] In a terminal mounting method in which a terminal having a cylindrical leg is inserted into a terminal mounting hole of a printed wiring board and fixed, the leg is inserted into the mounting hole and a punch having a conical tip is used. The punch and the leg are relatively moved in the axial direction of the tube of the leg so that the terminal is inserted into the tube of the leg, thereby deforming the end of the leg into a conical shape, and inserting the terminal into the tube of the leg. A method for attaching a terminal, characterized by fixing it to a printed wiring board.