JPH0442901A - Electronic component - Google Patents

Abstract

PURPOSE:To enable a terminal to be inserted smoothly when packaging onto a printed- circuit board and packaging reliability to be improved by forming a tip of at least one terminal out of a plurality of terminals which are extended toward outside from a component body in approximately conically. CONSTITUTION:A tip of at least one terminal of a plurality of terminals 10 which are extended toward outside from a component body 1 is formed to be approximately in conical shape. Namely, not only skew surfaces 10a and 10a which become thinner at the tip are formed in plate width direction X at the tip part of the collector terminal 10 but also a skew surface 10b which becomes thinner in the plate width direction is formed. Electronic components are carried to a specified position at an upper part of the printed-circuit board utilizing a pilot hole 25, the component body 1 or a terminal for connection 20 is retained to an automatic insertion machine, the terminal for connection 20 is cut, and then terminals 10, 20 and 20 are inserted into mounting holes of the printed-circuit board and a tip part of the collector terminal 10 is formed to be in conical shape so that skew surfaces 10a, 10b function as insertion guides, insertion property into the mounting hole is appropriate, and no deformation result due to hooking to the mounting hole, thus achieving an improved packaging reliability.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to electronic components, particularly electronic components such as semi-fixed variable resistors, trimmer capacitors, tactile switches, etc. The present invention relates to an electronic component that is supplied to a printed circuit board with predetermined terminals supported on a carrier tape.

2. Description of the Related Art Hitherto, as this type of carrier tape supported and supplied electronic components, those shown in FIGS. 6 and 7 have been available. This is an example of a semi-fixed variable resistor, and one connector terminal 10 and two resistor terminals 15°15 extend below the main body 1, and the terminals 15 and 15 are connected. terminal 20.20 is connected. This connection is made by connecting the upper horizontal bent portion of the connecting terminal 20 to the protruding piece 15 of the terminal 15.
This is done by caulking a. The vertical portions of the connection terminals 20 are aligned in a plane containing the central axis of the main body 1.

This electronic component consists of a base tape 24a and an adhesive tape 24b.
The lower half of the connecting terminal 2° is sandwiched and carried by a carrier tape 24 consisting of a
After cutting the vertical portion of the connection terminal 20, it can be mounted on a printed circuit board using an automatic insertion machine.

However, in the conventional electronic components described above, when automatically inserting the electronic components into a printed circuit board, etc., the collector terminals 10 floating without being supported by the carrier tape 24 are removed by the automatic insertion machine. Since the attachment is inserted into the hole without any guide, even a slight misalignment will cause insertion failure. That is, in order to improve the ease of inserting the collector terminal 10 into the hole, the terminal 10 is formed with a tapered slope in the width direction (arrow X direction), but is tapered in the thickness direction (arrow Y direction). No countermeasures have been taken. Deformation of terminals due to external forces during transportation and storage of electronic components often occurs in the thickness direction, and this also causes a noticeable deterioration in insertability.

Therefore, an object of the present invention is to provide an electronic component that can be easily inserted into a hole and has high mounting reliability.

In order to solve the above problems, the electronic component according to the present invention has the following features:
The present invention is characterized in that the tip of at least one of the plurality of terminals extending outward from the component body is formed into a substantially conical shape. That is, when the terminal is made of a plate-like material with a rectangular cross section,
A tapered inclined surface is formed not only in the width direction of the plate but also in the thickness direction so that the tip end has a substantially conical sharp shape. With this,
Mounting using an automatic insertion machine improves ease of insertion into the hole, which in turn improves mounting reliability.

The terminal may be made of a plate-like material or may have a circular cross section.

In this case, it is preferable to process the tip of the terminal into a square pyramid shape.

Embodiments Hereinafter, embodiments of electronic components according to the present invention will be described with reference to the accompanying drawings.

The electronic components shown in Figures 1 and 2 are semi-fixed variable resistors for taping, and basically have the same configuration as those shown in Figures 6 and 7 as conventional technology. ing.

Therefore, in FIGS. 1 and 2, the same reference numerals as in FIGS. 6 and 750 indicate the same parts, and detailed explanation thereof will be omitted. The feature of this embodiment is that the tip of the collector terminal 10 is formed into a substantially conical shape.

That is, the tip of the collector terminal 10 is not only formed with inclined surfaces 10a, 10a that taper in the board width direction X, but also has an inclined surface 10b that tapers in the board thickness direction Y. FIG. 3 is a perspective view of the collector terminal 10 shown in FIGS. 1 and 2, in which only one inclined surface 10b in the thickness direction is formed. Of course, as shown in Figure 4,
It may be formed on the front and back surfaces in the thickness direction.

As a processing procedure, the inclined surface tab is pressed to a predetermined angle using a press machine, and then the inclined surface 10a is cut. However, the processing procedure is not limited to this example.

When mounting this electronic component on a printed circuit board, the electronic component is conveyed to a predetermined position above the printed circuit board using the pilot hole 25. Therefore, after the component body 1 or the connection terminal 20 is fully held in the automatic insertion machine, and the connection terminal 20 is cut along the dotted chain line A in FIG. 1, each terminal 10.20.2
To install a printed circuit board, the board is inserted into the hole, cut to the required length, bent to prevent removal, and then soldered.

In the automatic insertion machine described above, since the tip of the collector terminal 10 is formed into a substantially conical shape, the inclined surfaces 10a, 10
b functions as an insertion guide, the installation has good insertion into the hole, and the installation does not get caught in the hole and deform.
The mounting reliability is also good. The angle α of the inclined surface 10b is 30
An obtuse angle of 90° or more is preferable for smooth insertion, and the tip may get caught in the mounting hole, causing deformation such as buckling.

Note that the terminal whose tip portion is formed into a substantially conical shape is not limited to one having a rectangular cross section, but may have a circular cross section or a square cross section. If the terminal has a circular cross section, as shown in Figure 5,
It is processed into a quadrangular pyramid shape to form inclined surfaces 10a and 10b.

Of course, the shape may be a polygonal pyramid including a triangular pyramid. Further, the terminal to be processed in this manner is not limited to the collector terminal 10, but may be the connection terminal 20, 20.

Furthermore, the present invention can be widely applied not only to variable resistors but also to taping devices such as trimmer capacitors and tact switches.

Effects of the Invention As is clear from the above explanation, according to the present invention, the tip of at least one of the plurality of terminals extending outward from the component body is formed into a substantially conical shape, so that it is easy to mount it on the board. This improves the ease of inserting the terminal during the process, improving mounting reliability. In particular, it is effective to form the tip of the terminal, which is not supported by the carrier tape, which is likely to be deformed, into a substantially hook shape.

[Brief explanation of drawings]

FIG. 1 is a side view of an electronic component according to an embodiment of the present invention in a taped state, and FIG. 2 is a front view thereof. FIG. 3, FIG. 4, and FIG. 5 are perspective views showing the processed shape of the tip of the terminal, respectively. FIG. 6 is a side view of a conventional electronic component taped, and FIG. 7 is a front view thereof. 1... Part body, 10... Collector terminal, 10a,
10b... Slanted surface, 15... Resistor terminal, 20...
...Connection terminal, 24...Carrier tape. jI3Figure j[Figure 5Figure 4

Claims (2)

[Claims] 1. In an electronic component that is supplied to a printed circuit board with predetermined terminals among a plurality of terminals extending outward from a component body supported on a carrier tape, the tip of at least one of the plurality of terminals is An electronic component characterized by being formed into a substantially conical shape. 2. Two of the three terminals extending outward from the component body were provided on the same plane and supported by a carrier tape, and the tips of the remaining terminals not supported by the carrier tape were formed into a substantially conical shape. An electronic component characterized by: