JPH02168601A - Manufacture of connected body of electronic parts - Google Patents

Abstract

PURPOSE:To continuously supply electronic parts on a wiring board by an automatic supplying machine by fixing a case to each pair of metal terminals bridged between a pair of connecting bodies, and soldering electrode parts of the electronic parts to terminals exposed in the case. CONSTITUTION:By punching metal hoop material 12, connecting parts 12d, 12e of both sides and terminal 12a-12c bridged between both of the connecting parts 12d, 12e are formed in a unified body. A case 11 is fixed by outsert forming to the terminal 12a-12c with resin. Each of the terminals 12a-12c is exposed on the bottom surface 11b of a recessed part 11a. After each of the exposed terminals 12a-12c and each of the connection electrodes 8a-8c of a semi-fixed variable resistor 1 are temporarily fixed with solder 14, the case 11 is passed the inside of a furnace at a specified temperature. Thus the semi- fixed variable resistor 1 is fixed in the case 11 by soldering. Thereby automatic supply of parts is enabled.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention continuously supplies small electrical components to a printed circuit board etc. using an automatic supply machine when installing electrical components such as semi-fixed variable resistors onto a wiring board. The present invention relates to a method of manufacturing a connected body of electrical components for use in manufacturing.

[Prior art] Figure 1 (A) (top view), Figure 1 (B1 (side view)),
Figure 1 (bottom view) shows a semi-fixed variable resistor 1 as an example of a small electric component. This semi-fixed variable resistor 1 has a small size of about 4 mm on one side.

A shaft 3 is provided at the center of the substrate 2, and an operating body 4 is provided above the shaft 3. A slit 4a is formed in the upper surface of this operating body 4 for rotational operation by a screwdriver. Further, a slider 7 is provided on the lower surface of the operating body 4 so as to be rotatable therewith. An electrode 5 electrically connected to a slider 7 and a resistor 6 formed concentrically with respect to the shaft 3 are attached to the upper surface of the substrate 2, and the slider 7 is attached to the resistor 6. It is in sliding contact with 6. The end of the electrode 5 and both ends of the resistor 6 extend to the edge of the substrate 2. A connection electrode 8a is connected to the end of the electrode 5, and connection electrodes 8b, 8c are connected to both ends of the resistor 8, and each of the connection electrodes 8a, 8b, 8c extends to the back side of the substrate 2. It is extending.

Conventionally, in order to mount this type of semi-fixed variable resistor 1 on a printed circuit board, creamy solder is applied to a pattern on the printed circuit board, and connection electrodes 8a, 8b, 8
Install c. Then, the printed circuit board is passed through a furnace at a predetermined temperature to melt the solder and connect the connecting electrodes 8a, 8b.
8c and the pattern on the substrate are fixed to each other.

[Problems to be Solved by the Invention] Incidentally, in the manufacturing process of recent electronic device units, it is common to supply various electrical components to a printed circuit board using an automatic supply machine and mount them thereon. However, when the semi-fixed variable resistor 1 as described above is mounted as a single unit on a printed circuit board, there is a drawback that the above-mentioned automation is difficult to implement.

In other words, there is no optimal means for continuously supplying the semi-fixed variable resistor 1 shown in FIGS. Arranging the containers 1 one after another on a printed circuit board requires grasping the board 2 itself, which is unstable.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to continuously supply electrical components onto a wiring board using an automatic supply machine, and furthermore, it is an electrical component that can use conventional electrical components as they are. It is an object of the present invention to provide a method for manufacturing a connected body.

[Means for solving problems]

The method for manufacturing a connected body of electrical components according to the present invention is as follows (
It is characterized by consisting of steps a) to (cl).

(a) A connecting portion and a plurality of sets of metal terminals connected to the connecting portion are formed from a metal plate. (b) A resin case is fixed to each set of metal terminals, and at this time, the above-mentioned (C) Storing electrical components in each of the cases and soldering the electrode portions of the electrical components to the metal terminals exposed in the cases; [ Effect] In the above means, the case is fixed to each set of metal terminals provided between the pair of connecting bodies by outsert molding or the like. At this time, the metal terminal is exposed inside the case, and the electrode portion of an electrical component such as a semi-fixed variable resistor is soldered to this terminal. Therefore, electrical components such as semi-fixed variable resistors can be installed inside the case using normal soldering, and through this soldering process, a connected body in which multiple cases and electrical components are connected is obtained. be able to. In addition, since the electrical components only need to be soldered to the case, the structure of electrical components such as semi-fixed variable resistors can be kept the same as before, and there is no need to change the components to form the connection body. .

When mounting the above-mentioned electrical components on a wiring board, load the connecting part that connects the cases or a separate connecting member into an automatic feeder, and separate the parts by removing the protruding parts of the metal terminals, etc. The case is supplied to the wiring board, and the terminals protruding from the case are attached to the through holes of the wiring board.

[Example] Hereinafter, an example of the present invention will be described with reference to FIG. 2 and the following drawings.

FIGS. 2 to 6 show the assembly of electrical parts used in the present invention in the order of manufacturing steps.

First, with reference to FIG. 6, the structure of a connected body of electrical components using the semi-fixed variable resistor 1 will be explained.

In the completed state, the semi-fixed variable resistor 1 is installed on a resin case II. This case 11 includes a set of three metal terminals 12a and 12b.

12c is outsert molded.

Connection electrodes 8a, 8b of each semi-fixed variable resistor 1,
8c is connected to each metal terminal 12a, 12b by solder 14.
, 12c.

Further, the tips of the metal terminals 12a, 12b, and 12c are connected to each other by paper tape 13, which is a connecting member.

Next, a method for manufacturing a connected body of electrical components having the above structure will be explained step by step.

First, as shown in FIG. 2, a metal terminal 12a.

12b and 12c are formed. That is, the metal hoop material 12 is punched out (possibly the connecting portions 12d on both sides,
12e, and both connecting portions 12d.

Terminal 12a is provided between terminals 12e and 12e.

12b and 12c are integrally formed.

The terminals are 12a, 12b, and 12c, which are a set of three.
A plurality of sets are formed in line in the vertical direction of FIG. Note that the holes 12f drilled in the connecting portions 12d and 12e are provided for automatically feeding the hoop material when punching and forming the terminals L2a, 12b, and 12c.

Next, as shown in FIG. 3, one set of three terminals 12a,
The case 11 is fixed to 12b and 12c. This case 11 has terminals 12a, 12b, 12c made of resin.
It is fixed by outsert molding. This case 11 has a rectangular plane, and has a recess 11a in the center thereof, and a cutout llc continuous with the recess 11a at the right end of the figure. Each terminal 12a is provided on the bottom surface 11b of the recess 11a.

12b and 12c are exposed (see FIG. 5 for the cross-sectional shape of the case 11).

Next, as shown in FIGS. 4 and 5 (cross-sectional view in FIG. 4), the semi-fixed variable resistor 1 is installed in the recess 11a of the case 11. In this work, first, each terminal 12a, 12b, 12c exposed in the recess 11a of the case 11 and each connection electrode 8a, 8b, 8c of the semi-fixed variable resistor l are temporarily connected with creamy solder 14. Stop it. Thereafter, the case 11 is passed through a furnace at a predetermined temperature, the solder 14 is melted at the temperature inside the furnace, and the semi-fixed variable resistor 1 is fixed in the case 11 by soldering.

Note that the terminals 12a and 12b are made from hoop material.

The process from punching out the 12c to passing it through the furnace and soldering as described above is performed continuously. During this series of steps, the terminals 12a, 12b
, 12c is carried out while automatically feeding the terminals 12a, 12b, 12c through holes 12f formed in connecting portions 12d, 12e on both sides.

After the above steps up to soldering are completed, the connecting portion 12e and the terminal 12a are removed.

The parts 12b and 12c that protrude to the right side of the case 11 are cut to form the state shown in FIGS. 4 and 5.

Furthermore, after that, each terminal 12a, 12b.

Attach paper tape 13, which is a connecting member, to the tip of 12c,
Thereafter, the connecting portion 12d protruding from the paper tape 13 is cut and removed to form the connected body of electrical components shown in FIG. 6.

Through the above steps, the connected body of electrical components formed into the state shown in FIG. 6 is supplied as is to a set assembly process for various electronic devices.

In this assembly process, the paper tape 13 is loaded into an automatic feeder, and the fixed portions of the semi-fixed variable resistor 1 are sequentially fed out using the holes 13a formed in the paper tape 13, and then the terminals 12a.

Each case 11 is separated from the connected body shown in FIG. 6 by cutting the left ends of 12b and 12c as shown in the drawing. and,
The terminals 12a, 12b, 1 are
2c and insert it into the mounting hole of the printed circuit board.

In the illustrated embodiment, a semi-fixed variable resistor is used as a small electric component, but other components such as a coil or a transistor may also be used. In the state shown in Fig. 6, the paper tape 13 is used as a connecting member, and this paper tape 13 is loaded into an automatic feed mechanism by an automatic feeder. is directly used as a connecting member instead of this tape 13, that is, it is loaded into an automatic component feeder with the paper tape 13 removed (as shown in FIG. 6) and with the connecting portion 12d indicated by the dotted line In this case, the connecting part 12d is loaded into the feeding mechanism of the automatic feeding machine, and each case 11 is fed out by this connecting part 12d. Then, in the automatic feeding machine, the terminals 12a, 12b, 12c is cut from the connecting portion 12d, and the semi-fixed variable resistor 1 is supplied on the printed circuit board.

[Effects] As described above, according to the present invention, the following effects can be achieved.

(1) The case is fixed to each set of metal terminals, and the electrodes of electrical components such as semi-fixed variable resistors are soldered to the metal terminals exposed inside each case. It is possible to manufacture a connected body of electrical parts in a process. In addition, since the electrodes of electrical components are soldered to the terminals exposed inside the case, the same electrical components as before can be used, and there is no need for a special component structure to form a connection. No need to change the design. Additionally, conventional electrical components can be used both for automatic feeding machines and for conventional usage, making component management easier.

(2) Since the case is fixed to the metal terminal and the internal electrical components are attached, and each terminal is connected by a connecting member or connecting member, small electrical components can be mounted on the wiring board. In this case, it is possible to feed the terminal part continuously into an automatic feeder by means of a connecting member or a connecting member, after which the terminal parts can be separated and this terminal can be held and automatically mounted on the substrate. Therefore, it becomes possible to automatically supply electrical components into the automatic supply machine and to automatically supply each individual electrical component onto the wiring board. therefore,
It becomes possible to fully automate the mounting of electrical components onto wiring boards, improving work efficiency.

(3) Since the metal terminal is provided with a resin case and the small electrical components are installed within this case, this case can be formed by means such as outsert molding to create a connection body of the electrical components at low cost. You will be able to produce it.

[Brief explanation of the drawing]

1 (Figure A1 is a plan view of a semi-fixed variable resistor which is an example of an electrical component, Figure 1 (B) is a side view thereof, Figure 1 (C) is a bottom view thereof, Figures 2 and following are the invention of the present invention) 2, 3, and 4 are plan views showing each step of the method for manufacturing a connected body of electrical components according to the present invention,
FIG. 5 is a sectional view of FIG. 4, and FIG. 6 is a plan view showing a completed electrical component connection. 1... Electrical component (semi-fixed variable resistor), 8a. 8b, 8c... Connection electrode, 11... Case, lla
... recess, 12a, 12b, 12cm terminal, 12d. 12e...Connection portion, 12d, 12e...Connection member. 14...Solder. A

Claims (1)

[Scope of Claims] A method for manufacturing a connected body of electrical components, characterized by comprising the following steps (a) to (c). (a) A connecting portion and a plurality of sets of metal terminals connected to the connecting portion are formed from a metal plate. (b) A resin case is fixed to each set of metal terminals, and at this time, the above-mentioned exposing the metal terminals within the cases; (c) storing electrical components in each of the cases, and soldering the electrode portions of the electrical components to the metal terminals exposed within the cases;