JPS60180102A - Method of connecting leads of electric element - 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 The present invention relates to a method for connecting a pair of lead wires to an electrical element used in a temperature sensor or the like.

As shown in FIG. 1, in order to connect a pair of lead terminals 4.5 to the front and back electrodes 2, 3 of an electric element 1, for example, a thermistor, conventionally two independent lead wires 4, 5 are connected to the front and back electrodes 2, 3 of an electric element 1, for example, a thermistor. 1
The device 1 was held between the ends of the lead wires so as to touch the front and back electrodes 2 and 3 of the device, and connections were made by hand soldering or dipping. It was quite difficult to hold the ends of two independent lead wires together, and they easily came off, and soldering required time and effort. Furthermore, since the posture of the lead wires holding the element is not stable, the lead wires are likely to be misaligned or deformed during processing in soldering, making it difficult to improve dimensional accuracy.

The present invention provides a lead wire connection method that allows lead wires to be connected easily, reliably, and accurately even to microelectric elements.

Some embodiments of the present invention will be described below based on the drawings.

First example (see Figures 2 to 4) Figure 2 shows a part of a lead wire material integrally formed by punching a thin plate or etching. The guide Its 6 extends continuously through leg portions 4a' and 5a, respectively. Near the ends of each pair of lead wires are connected by one short par 7 to maintain the wire spacing, and between the legs of the adjacent pair
It is connected by two 7-way bars 8.

Incidentally, an example of the actual dimensions of the above-mentioned material used for the element 1 having a corner of 0.6 mm and a thickness of 0.4 mm is shown below. a-1゜O
mm + b-0-2~O-3mm + Q-0-3~
0.4 +nm + 4”” 100mm+ 4-80
To assemble the element 1 to a lead wire material having a length of 1071 m or more, first, as shown in FIG. ), the element 1 with the electrodes 2 and 3 positioned vertically is inserted here, and the elastic restoring force of the lead wires 4 and 5 elastically clamps the element 1 vertically as shown in Fig. 4. .

In this case, since the shortener 7 is present at a position relatively close to the tip of the lead wire, the clamping force at the tip of the lead wire can be sufficiently exerted even if the plate is thin.

Next, with the element 1 held between the tips of the lead wires, soldering is performed by means such as dipping to connect the lead wires 4 and 5 to the front and back electrodes 2 and 3. after that,
A protective coating is applied only to the element part so as not to damage the short par 7.

After the protective coating is completed, the short par 7 is cut and removed if necessary. Next, the legs 4a and 5 are connected from the tip of the lead wire.
Paint the lead wires 4 and 5 facing each other up to the starting point of a.
insulation.

Next, the legs 4a, 5a are cut along the first cut line C1 in FIG.
After cutting, the insulated legs 4a and 5a are connected to a test device to check the characteristics of each element 1.

Incidentally, even if the first cut] is performed, the lead wire pairs are connected to each other by the shortener 8, so the characteristic check can be performed continuously.

With the above steps, the lead wire connection process and characteristic check of the element 1 are completed, and in order to make the element into a single piece, it is cut along the second cut line C2 shown in FIG. 2. However, this second cut may be performed before packaging the individual element or assembling it into electrical equipment, and it may be carried into the packaging machine or automatic assembly machine in the same state as before the second cut. .

Second example (see Figures 5(a) to (C)) If the tip of the lead wire 4.5 is slightly shifted back and forth, the element 1 can be placed on the long side as shown in Figure 5(b). After inserting it under the tip of the lead wire 4, lift the element 1 a little as shown in the same figure (C) to deform the lead wire 4, and then insert the element 1 onto the tip of the shorter lead wire 5. The device can be easily inserted between the ends of the lead wires.

The third example (see FIGS. 6 and 7) is coated with insulating materials 4b and 5b, and insulating material 4b,
5b are glued together to form an integrated parallel lead wire 4.5, and the tips of each lead wire 4, 5 are slightly exposed,
The element 1 is inserted here and elastically clamped, and then the lead wires 4 and 5 are attached to the front and back electrodes 2 and 3. In this case, if the lengths of the ends of the lead wires 4 and 5 are slightly different as shown in the figure, the element insertion operation will be facilitated. Note that as a means for shifting the tips of the lead wires 4 and 5, it is also possible to cut them diagonally as shown in FIG.

As explained above in the embodiments, the present invention first connects a pair of lead wires 4 and 5 such that their tips are maintained at a predetermined interval, and in this state, the tips of the lead wires 4 and 5 are connected. The element 1 is inserted by spreading it out, and the element 1 is elastically clamped between the tips of the lead wires 4 and 5, and then the lead wire tips and the electrodes 2°3 on the front and back of the element are soldered. Therefore, the device can be reliably held between the tips of the lead wires 4 and 5 that are connected to each other, and the soldering method prevents the device from falling off or shifting during processing, and the lead wire itself does not deform. It is now possible to finish with high dimensional accuracy.

Particularly, as shown in the first embodiment, when forming a large number of pairs of wires 4 and 5 in succession by punching or etching, it is easy to manage dimensional accuracy, and It has excellent continuous workability and is effective for automatic processing.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an element with a lead wire assembled by conventional means, FIG. 2 is a plan view of a lead wire material used in the method of the present invention, and FIG. 3 is a perspective view showing the form of element assembly. Figure 4 is a perspective view showing the completed state of element assembly, Figures 5 (a) to (C)
6(a) to 6(d) are side views showing the steps for assembling an element using an insulated parallel lead wire, and FIG. FIG. 7 is a perspective view of a state in which an element is assembled to a parallel lead wire, and FIG. 8 is a side view showing a modification of the parallel lead wire. 1... Element, 2, 3... Electrode, 4, 5... Lead wire, 6
...Band-shaped guide part, 7...Short bar. Applicant Murata Manufacturing Co., Ltd. Agent Kazuhide Okada, patent attorney −7− −【□ −ζ − 4′ rc?ノ 4 to the first to the top v3 ni yun hikigo =;=■; S 2

Claims (2)

[Claims] (1) A plurality of pairs of lead wires 4 and 5 are integrally formed on the band-shaped guide portion 6, and each pair of these lead wires 4 and 5 is connected with a short par 7 near its tip to form a lead for each pair. The ends of the wires 4 and 5 are maintained at a predetermined interval, and in this state, the electric element 1 having the electrodes 2.3 on the front and back sides is inserted between the ends of the lead wires 4 and 5 of each pair.
is elastically sandwiched between the tips of the lead wires 4 and 5, and then the tips of the lead wires 4 and 5 are connected to the electrodes 2.3, and after the connection, the shortper 7 is connected. A method for connecting lead wires of an electric element, the method comprising cutting the lead wires. (2) In the lead wire connection method for an electric element according to claim 1, each pair of the lead wires 4.
5 is a method for connecting lead wires of electrical elements whose tips are offset from each other.