JPH02298014A - Electrolytic capacitor - Google Patents

Abstract

PURPOSE:To surely restrain a bad influence on a capacitor element by a vibration and to reproduce music of a high tone quality by a method wherein the capacitor element is housed inside a bottomed cylindrical metal case whose one end is opened, this case is sealed and, after that, a ring-shaped elastic body is attached to an outer circumference part of the metal case. CONSTITUTION:A capacitor element 11 is constituted in the following way: after a foil of a valve action metal such as aluminum or the like is roughened, a dielectric film formed by an anodic oxidation operation is used as an anode foil, this anode foil and a cathode foil corresponding to the anode foil are wound via a separator and this assembly is impregnated with an electrolyte for drive use. Then, this capacitor element 11 is housed inside a bottom cylindrical metal case 12; after that, one open end part of the metal case 12 is sealed with a sealing member 13; a resin tube 14 as an outer package is attached to this electrolytic capacitor; in addition, a ring-shaped elastic body 15 such as a rubber or the like is attached to an outer circumference part inside the metal case 12 so as to be situated at the outside of a sealed part.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrolytic capacitor used in various types of audio electronic equipment.

BACKGROUND OF THE INVENTION Conventional electrolytic capacitors of this type, as shown in Figure 2,
After roughening the valve action metal foil, a dielectric film is formed by anodization to form an anode foil, and the corresponding cathode foil and the anode foil are wound with a separator interposed therebetween. A capacitor element 1 is constructed, this capacitor element 1 is impregnated with a driving electrolyte and housed in a metal case 2, and a sealing member is installed in the opening of the metal case 2 to prevent the internal driving electrolyte from evaporating. It was constructed by sealing. Note that 3 is a resin tube and 4 is a top plate.

Problems to be Solved by the Invention However, in the structure of the above-mentioned conventional electrolytic capacitor, when mounted and used in various electronic devices for acoustics,
Impressions generated from electronic components such as transformers and vibrations from the outside affect capacitor elements, and for example, it can have a negative impact on minute current transmission such as music signals, leading to deterioration of sound quality. This was revealed during the audition.

The present invention solves the above-mentioned conventional problems, and is an electrolytic device that can reproduce high-quality music when used in various electronic devices for sound without adversely affecting minute current transmission such as music signals. The purpose is to provide capacitors.

Means for Solving the Problems In order to solve the above problems, the present invention constructs a capacitor element by winding an anode foil and a cathode foil with a separator in between and impregnating the capacitor element with a driving electrolyte. The metal case is housed in a bottomed cylindrical metal case with one end open, and after sealing the open end of the metal case with a sealing member, an annular shape is placed outside the sealing part and attached to the outer periphery of the metal case. It is equipped with an elastic body.

Effect With the above-described configuration, perturbations generated from electronic components such as transformers and vibrations from the outside can be absorbed by the annular elastic body located outside the sealing part and attached to the outer periphery of the metal case. Therefore, it is possible to reliably prevent the adverse effects of the vibrations mentioned above on the capacitor elements, and as a result, when the electrolytic capacitor of the present invention is used in various electronic devices for acoustics, high-quality music can be reproduced. It is possible.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIG. In FIG. 1, numeral 11 is a capacitor element, and this capacitor element 11 is made by roughening a valve metal foil such as aluminum, and then forming a dielectric film by anodic oxidation to form an anode foil, and a corresponding cathode. The capacitor element 11 is constructed by winding the foil and the anode foil through a separator and impregnating it with a driving electrolyte, and the capacitor element 11 is placed in a bottomed cylindrical metal case 12 made of aluminum or the like with one end open. It is stored. After the capacitor element 11 is thus housed in the bottomed cylindrical metal case 12, one open end of the metal case 12 is sealed with a sealing member 13. Further, a resin tube 14 is attached to this electrolytic capacitor as an exterior. Furthermore, an annular elastic body 15 made of rubber or the like is attached to the outer circumferential portion of the metal case 12, located outside the sealing portion. 16 is a lead terminal connected to the capacitor element 11.

The electrolytic capacitor configured as described above is used by being mounted on the printed circuit board of various electronic devices for acoustics. Furthermore, since the annular elastic body 15 made of rubber or the like can absorb the imaging generated from electronic components such as a transformer and the imaging from the outside, it also reliably prevents any adverse effects on the capacitor element 11. It is something that can be done.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention,
The anode foil and the cathode foil are wound with a separator in between and impregnated with a driving electrolyte to form a capacitor element.
This capacitor element is housed in a bottomed cylindrical metal case with one end open, and one end of the metal case is sealed with a sealing member. Because the annular elastic body is attached to the outer periphery, the imaging generated from electronic components such as transformers and vibrations from the outside can be absorbed by the annular elastic body, and as a result, the above-mentioned imaging Therefore, when the electrolytic capacitor of the present invention is used in various types of audio electronic equipment, high-quality music can be reproduced.

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of an electrolytic capacitor according to an embodiment of the present invention, and FIG. 2 is a cutaway front view of a conventional electrolytic capacitor. 11... Capacitor element, 12... Metal case, 13... Sealing member, 15...
・Annular elastic body.

Claims (1)

[Claims] The anode foil and the cathode foil are wound with a separator in between and impregnated with a driving electrolyte to form a capacitor element.
This capacitor element is housed in a bottomed cylindrical metal case with one end open, and one end of the metal case is sealed with a sealing member. An electrolytic capacitor with an annular elastic body attached to the outer periphery.