JPH0618147B2 - Electronic parts - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic components used in electronic circuits.

[0002]

2. Description of the Related Art Conventional electronic parts, such as resistance parts, are provided with lead wires at both ends of a resistance element.
The lead wire is inserted into a small hole provided in a predetermined position of a printed circuit board prepared in advance, and is welded by soldering, and the remaining lead wire is cut off.

[0003]

However, in the above-mentioned conventional technique, since soldering is performed for mounting the parts, much time and labor are consumed, and the area on the printed circuit board which is the contact point of the parts is, for example, large. It is only ¹ to 4 mm ² , and in addition, since it has an insertion hole in the center, it is approximately 0.5 to ³ mm ^2.
Therefore, even if the parts are welded at a certain angle, they may be peeled from the substrate or the substrate itself may be damaged if a sudden force is applied.

The present invention has been made in view of the above circumstances. An object of the present invention is not to insert a component into a small hole of a substrate for soldering and to prevent the component from being separated from the substrate. The present invention intends to provide an electronic component that reinforces a board, is easy to mount and handle, and can be downsized.

[0005]

In order to achieve the above object, the electronic component of the present invention is an insulating material in which a lid portion is fitted into the open mouth of a box-like body having an open mouth. It is composed of a housing structure, and is provided with rib-shaped protrusions around the main body, and accommodates a base substrate in which elements are arranged inside the main body, and both ends of the base substrate project to the upper surface of the lid portion. The internal electrode is provided, and an electrode portion having substantially the same height as the convex portion is provided on the surface of the internal electrode exposed on the lid portion, and the main body and the lid portion are ultrasonically welded to each other. .

[0006]

In the electronic component 1 of the present invention configured as described above, the lid portion 3 and the main body 2 can be easily integrated by ultrasonic waves,
At this time, the internal element is also fixed, and the electronic component 1 thus produced has the electrode portion 14 aligned between the terminal surfaces at a predetermined position of the printed board 16 made of a material capable of ultrasonic welding. When covered with ultrasonic vibration, the electrode portion 14 is welded to the terminal surface, and the rib-shaped convex portion 8 of the main body 2 is welded to and integrated with the printed circuit board 16. The casing 4 is electrically connected to the printed circuit board 16 without being peeled off.
The printed circuit board can also be reinforced because it is reliably welded on.

Further, by stacking a plurality of elements for various electronic components on the base substrate 11 to be housed, various electronic components can be constructed, and the mounting area can be reduced. , Can be miniaturized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 is an electronic component, and the electronic component 1 will be described as a resistance electronic component, for example. The electronic component 1 is constructed by appropriately selecting various elements in a housing 4 formed of, for example, a main body 2 having a substantially box-like bottom and a lid portion 3 attached to the main body 2.

That is, the main body 2 is a thin container made of an insulating material which can be ultrasonically welded, and the upper surface of the figure has an opening 5
A step portion 6 for fitting and locking a lid portion 3 described later is provided inside the wall portion near the opening, and the lid portion 3 does not fall into the main body 2 due to the step portion 6 protruding inward. It is like this. Below the stepped portion 6, a sufficient space is formed to accommodate an electronic element 7 described later.

A rib-shaped convex portion 8 surrounding the opening 5 is provided on the upper surface of the wall of the main body 2 that defines the opening 5. This convex portion 8 is integrally molded when the main body 2 is molded, and its cross section has a substantially trapezoidal shape. The shape is not limited to the trapezoid, and may be a semicircular shape in which the tip direction is finely formed.

The lid portion 3 is a thin plate-like member which is fitted into the opening 5 of the main body 2 without a gap, is made of the same ultrasonically weldable insulating material as the main body 2, and is housed inside. An electrode lead-out hole 10 for inserting the internal electrode 9 of the electronic element 7 is provided.

The electronic element 7 includes a base substrate 11 formed of, for example, a glass chip or ceramics, internal electrodes 9 provided at both ends of the base substrate 11, and a base substrate 11 electrically connected to the internal electrodes 9. It is composed of an element 12 (resistive element in this embodiment) for an electronic component provided above, and is configured so that the current applied to one of the internal electrodes 9 can be taken out from the opposite electrode. .

The internal electrode 9 used in the electronic element 7 is, for example, a columnar conductive metal, and the terminal piece 13 is projected at the lower portion so as to come into contact with the element 12. The portion is provided with a rib-shaped electrode portion 14 formed at substantially the same height as the rib-shaped convex portion 8 provided on the upper end surface of the main body 2. The electrode portion 14 is brought into contact with a terminal portion on the printed board which is not shown in FIG.

As shown in FIG. 2, the internal electrode 9 may be formed by bending a thin metal into a substantially L-shape and forming the electrode portion 14 on the upper surface side. As shown in FIG. It is also possible to bend the outer portion downward and form the protruding portion 15 so that the bent front end abuts on the stepped portion 6 of the main body 2. In the case of the columnar conductive metal shown in FIG. 1, the protruding portion 15 may be one in which a slivers are provided and a thin sheet metal is sandwiched, as shown in FIG.

By providing such a protrusion 15 on the internal electrode 9, the internal electrode 9 is securely fixed when the lid 3 is fitted to the main body 2 of FIG.

The electronic component 1 constructed as described above is housed in the main body 2 of the housing 4 with the base plate 11 side of the electronic element 7 having the internal electrode 9 and the element 13 attached to the bottom side, and the lid. When the portion 3 is fitted into the opening 5 of the main body 2, the electrode portion 14 of the internal electrode 9 projects from the upper surface of the lid portion 3. In this state, when the ultrasonic welding horn (not shown) having a well-known structure is pressed against the bottom portion of the main body 2 and the lid portion 3 to apply ultrasonic vibration, the main body 2 and the lid portion 3 are welded and integrated. Then, the electronic component 1 is molded.

The electronic component 1 is arranged at a predetermined position on the printed board 16 as shown in FIG. In this case, the printed circuit board 16 includes the convex portion 8 of the main body 2 and the electrode portion 14 on the internal electrode.
A space 17 for accommodating the
The outer circumference of the end face of the is closely contacted with the printed circuit board 16.

In this state, when ultrasonic vibration is similarly applied to the portion to be joined to the main body 2 and the printed circuit board 16, the convex portion 8 of the main body 2 and the printed circuit board 16 are welded,
The electrode portion 14 is welded to a terminal portion formed on the printed board 16 in advance by edging or the like. At this time,
Since the space 17 is welded in a vacuum state, the electrodes are not attacked by temperature or chemicals, and the mounting parts are positioned.

FIG. 6 shows an example in which a capacitor is applied as an element of the electronic component 1. In this case, for example, a ceramic dielectric is used as the base substrate 11, an insulating film 18 is provided on the upper surface of the base substrate 11 in several stages, and electrode plates 19 are provided at both ends of the laminated body. Electrode protrusions (not shown) may be provided on a part of the electrode plate 19, and the electrode plate 19 may be housed in the housing 4 as described above and subjected to ultrasonic welding.

The electronic component of the present invention is not limited to the above-described embodiment, but can be applied to an electronic component having an IC circuit, and can be implemented in other modes by appropriate design changes. .

[0021]

As described above, according to the electronic component of the present invention, the body 4 having the opening 5 has the housing 5 formed of the insulating material, into which the lid 3 is fitted. Becomes
A rib-shaped convex portion 8 is provided around the main body 2, and a base substrate 11 in which an element 12 is arranged is housed inside the main body 2, and both ends of the base substrate 11 project to the upper surface of the lid portion 3. An internal electrode 9 is provided, and an electrode portion 14 having substantially the same height as the convex portion 8 is provided on the surface of the internal electrode 9 exposed on the lid portion 3 by ultrasonic welding of the main body 2 and the lid portion 3. Since it is made to be integrated, it becomes possible to insert the component into the small hole of the printed circuit board and eliminate the step of soldering.
When mounting on the printed circuit board 16, the rib-shaped convex portion 8 is welded to the printed circuit board 16 only by covering the predetermined position with the electrode portion 14 in conformity with the terminal surface and applying ultrasonic vibration to the joint portion. Also, the printed circuit board 16 is reinforced without being welded to the terminal surface formed in advance on the printed circuit board 16 and peeled off, and the electronic parts can be easily manufactured and mounted and handled, and the size thereof can be reduced. There is an advantage that becomes possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an electronic component according to an embodiment of the present invention.

FIG. 2 is a side view of internal electrodes used for an electronic component.

FIG. 3 is a side view of another embodiment of the internal electrode.

FIG. 4 is a side view of another embodiment of the internal electrode.

FIG. 5 is a partial side sectional view of the electronic component when mounted.

FIG. 6 is a sectional view of an electronic device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic component 2 Main body 3 Lid part 4 Housing 5 Opening port 7 Electronic element 8 Groove-shaped convex part 9 Internal electrode 11 Base substrate 12 Element 14 Electrode part 15 Projection part 16 Printed circuit board

Claims (1)

[Claims] 1. A body 2 having a bottom and a substantially box shape having an opening 5.
The lid 3 is fitted into the opening 5, and is made of an insulating material and has a four-structured structure. A rib-shaped convex portion 8 is provided on the upper surface of the main body 2 and the inside of the main body 2 is provided. The base substrate 11 on which the element 12 is arranged is housed, and the internal electrodes 9 projecting from the upper surface of the lid 3 are provided at both ends of the base substrate 11.
An electrode portion 14 having substantially the same height as that of the convex portion 8 is provided on the surface of the internal electrode 9 exposed on the lid portion 3, and the main body 2 and the lid portion 3 are ultrasonically welded and integrated. And electronic components.