JPH11102837A - Electrode component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive to eliminate irregularities in the size of an electronic component by a method, wherein pawls for checking the front and back surfaces of elements are provided on the first and back surfaces of U-shaped caps. SOLUTION: External electrodes 2 are respectively formed on the side surfaces of ceramic capacitor elements 1 and the elements 1 are bonded together with a bonding agent 3 consisting of an epoxy resin. Both side surfaces of the two bonded capacitor elements 1 are respectively fitted into U-shaped caps 4 from each left and right of the elements 1. Pawls 5 are respectively provided on the front and back surfaces of these caps 4, and these pawls 5 are positioned in such a way as to come into contact with the front and back surfaces of the group of the element 1 which one fitted into the caps 4 and have a function of checking the motion is the front and rear of the group of the elements 1. Creamy solder has been applied beforehand on the inner upper surface parts of the caps 4, which are connected with the electrodes 2 of the elements 1. The elements 1 fitted into the inner upper surface parts of the caps 4 are dried and heated, whereby the creamy solder is made to fuse and the electrodes 2 of the elements 1 are connected with the inner upper surfaces of the caps 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to electronic components such as ceramic capacitors and ceramic varistors.

[0002]

2. Description of the Related Art Electronic components surface-mounted on electronic circuit boards include, for example, ceramic capacitors and ceramic varistors. These electronic components include a single plate-shaped component, a laminated component, and a component in which a plurality of plate-shaped components are used by laminating them. There is a configuration in which a metal cap is fitted into an external electrode formed on a side surface of a component, and a lower portion of the cap is soldered to a circuit board. As an example, FIG. 3 shows the configuration of a conventionally used ceramic capacitor with a cap. That is, external electrodes 12 are formed on both side surfaces of the two ceramic capacitor elements 11, and an adhesive 13 made of epoxy resin is applied between the lower surface and the upper surface of the capacitor element 11, and the two are planarly bonded. Then, the cap 14 in which cream solder was previously applied to the inner surface of the capacitor element 11 was fitted to the group, and the external electrode 12 of the capacitor element 11 was connected to the cap 14 by drying and heating to melt the cream solder. . In addition, 15 is a circuit board.

[0003] However, in such a ceramic capacitor with a cap, the cream solder melted by heating performed to connect the external electrode 12 of the capacitor element 11 and the cap 14 has fluidity. There is a problem that the capacitor element 11 moves in the front and rear directions and is not fixed at a predetermined position, and the front or rear face of the capacitor element 11 is outside the width of the U-shaped cap 14 and does not fit within a predetermined dimension. there were.

[0004]

As described above, in the conventional electronic component with a cap, the capacitor element 11 has a U-shape due to the fluidity of the cream solder used to connect the capacitor element 11 and the cap 15. Cap 1
4 has a drawback that it is not connected to a predetermined position, causing variations in dimensions as electronic components.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide an electronic component in which an electronic component element is connected to a predetermined position of a U-shaped cap and a dimensional variation is eliminated. Things.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a ceramic electronic component element having a pair of external electrodes is fitted on the inner upper surface and connected to the external electrodes. An electronic component comprising a U-shaped cap, wherein the U-shaped cap is provided with claws for stopping the front and rear surfaces of the ceramic electronic component element.

In the electronic component according to the first aspect,
The two sides of the electronic component element are positioned by the U-shape of the U-shaped cap, and the front and rear faces of the electronic component element are restrained by the claws provided on the front and rear faces of the cap. The element can be accommodated and dimensional variations can be eliminated.

The invention according to claim 2 is characterized in that the ceramic electronic component element according to claim 1 is one electronic component element or a group of two or more ceramic electronic component elements.

Therefore, a plurality of claws are provided on the front and rear surfaces of the cap so as to stop one or more electronic component elements, or are provided so as to straddle two or more electronic component elements. You may.

[0010]

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the two ceramic capacitor elements 1 have external electrodes 2 formed on the side surfaces thereof, and are bonded with an adhesive 3 made of epoxy resin.

The U-shaped cap 4 shown in FIG. 2 was fitted on both sides of the two groups of capacitor elements 1 bonded by this bonding from the left and right. The cap 4 is provided with claws 5 on the front and rear surfaces thereof, and the claws 5 are positioned so as to be in contact with the front and rear surfaces of the fitted capacitor element group 1 to prevent the capacitor element group 1 from moving back and forth. It has the effect of doing.

Then, cream solder is applied in advance to the inner upper surface of the cap 4 connecting the external electrodes 2 of the capacitor element 1. This cream solder may be applied to the external electrodes 2 of the capacitor element 1 in advance.

As described above, the capacitor element 1 fitted on the inner upper surface of the cap 4 to which the cream solder has been applied is dried and heated so that the cream solder is melted. The external electrode 2 of the capacitor element 1 is connected to the upper surface. At this time, since the forward and backward movements of the capacitor element 1 are restrained by the claws 5 provided on the cap 4, the capacitor element 1 is connected to a predetermined position.

In the above embodiment, the case where two capacitor elements 1 are superposed has been described.
The same operation and effect can be obtained by a single unit or by stacking three or more units.

In the embodiment, the claw 5 provided on the cap 4 has been described as being provided on the upper end of the cap 4.
As shown in 5a of FIG. 2, it may be provided at the U-shaped vertical portion, or may be provided at both the upper end and the vertical portion. Also, it is preferable that the number and positions of the claws are appropriately set in consideration of the number of electronic component elements and the stopping position of the electronic component elements.

In the above embodiment, the case where a ceramic capacitor is used as an electronic component has been described. However, the present invention can be applied to a varistor, a resistor, or an electronic component that is a combination thereof.

[0017]

As described above, in the electronic component according to the present invention, since the electronic component element can be connected to the predetermined position of the U-shaped cap, the dimensional variation of the electronic component can be eliminated. The effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing an electronic component according to the present invention.

FIG. 2 is a perspective view showing an embodiment of the cap according to the present invention.

FIG. 3 is a front view showing a conventional electronic component.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Capacitor element 2 ... External electrode 3 ... Adhesive 4 ... U-shaped cap 5 ... Claw

Claims (2)

[Claims] 1. An electronic component comprising: a ceramic electronic component element having a pair of external electrodes; and a pair of U-shaped caps fitted with the ceramic electronic component element on an inner upper surface and connected to the external electrodes. An electronic component, wherein a cap is provided on a cap to control a front surface and a rear surface of a ceramic electronic component element. 2. The electronic component according to claim 1, wherein the ceramic electronic component element is one ceramic electronic component element or a group of two or more ceramic electronic component elements.