Capacitor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYutaka Tanaka, Katsumasa Kaneko, Susumu Matsumoto
Life of this patent
Estimating the term…
Abstract
A capacitor element having a terminal, an electric insulating material installed to cover the capacitor element, a wire connected to the terminal, and a reinforcing structure installed at the junction for connecting the terminal and the wire. In this constitution, the junction of the terminals and wires maintains mechanical strength and electrical insulation and is enhanced in reliability for a long period against mechanical stress or vibration to the capacitor from outside. Still more, invasion of moisture or dust into the capacitor can be prevented. As a result, the life of the excellent mechanical strength and electrical insulation is enhanced, and the capacitor having a stable reliability for a long time may be obtained.
Claims28
A capacitor enhanced in mechanical strength and electric insulation comprising:
- a capacitor element having a terminal,
- an electric insulating material disposed to cover said capacitor element,
- a wire connected to said terminal, and
- reinforcing means disposed at a junction for connecting said terminal and said wire,
- wherein said reinforcing means has a heat shrink tube and an electric insulating resin,
- said heat shrink tube covers said junction, and
- said electric insulating resin covers a bottom of said heat shrink tube.
A capacitor enhanced in mechanical strength and electric insulation comprising:
- a case having an opening,
- a capacitor element disposed in said case having a terminal,
- an electric insulating resin disposed in said opening of said case to cover said capacitor element,
- a wire connected to said terminal, and
- reinforcing means disposed at a junction for connecting said terminal and said wire, wherein said reinforcing means has a heat shrink tube disposed to cover said junction, and a filler disposed on a surface of said electric insulating resin to cover a lower end of said heat shrink tube, a surface of said electric insulating resin has a convex shape having an inclination toward said case from a center of the surface, and the surface is formed so as to remove water depositing on said electric insulating resin outside of said case.
A capacitor enhanced in mechanical strength and electric insulation comprising:
- a case having an opening,
- a capacitor element disposed in said case having a terminal,
- an electric insulating resin disposed in said opening of said case to cover said capacitor element,
- a wire connected to said terminal, and
- reinforcing means disposed at a junction for connecting said terminal and said wire, wherein a surface of said electric insulating resin has a shape with a concave portion in the center, a groove is formed in a center of the surface of the electric insulating resin, a side surface of said case has a hole formed at lower position than a bottom of said concave portion, and said groove is formed continuously from said concave portion toward said hole, wherein water depositing on the electric insulating resin may be removed outside of said case.
A capacitor enhanced in mechanical strength and electric insulation comprising:
- a case having an opening,
- a capacitor element disposed in said case having a terminal,
- an electric insulating resin disposed in said opening of said case to cover said capacitor element,
- a wire connected to said terminal, and
- reinforcing means disposed at a junction for connecting said terminal and said wire, said reinforcing means extending from said case to said wire.
Dependencies are inferred from the claim text.