Capacitor case having flat coupling sections
First Claim
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1. A capacitor, comprising:
- a hollow cylindrical case provided at a periphery thereof with an axial opening and having a coupling section;
a terminal plate attached to a capacitor element housing in said cylindrical case and having a coupling section, said terminal plate being coupled with said cylindrical case by said coupling sections; and
resin filler injected between said capacitor element and said cylindrical case,wherein one of said coupling sections of said cylindrical case and said terminal plate has a convex shape and the other has a concave shape, and wherein at least one of said coupling sections is made of thermoplastic resin, wherein said coupling sections extend flat.
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Abstract
A hollow cylindrical resin case provided at a periphery thereof with an axial opening and a resin terminal plate, one of which has a concave coupling section and the other has a convex coupling section, are coupled together and then filler resin is injected between the capacitor element attached to the terminal plate and the resin case to provide a seal. One or both of the resin case and the resin terminal plate are made of thermoplastic resin, and a space is defined between the coupling sections. A dimension of the space and an inserting force applied to the coupling portions are set to appropriate values, thereby realizing a high quality capacitor free from leakage of filler resin.
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Citations
12 Claims
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1. A capacitor, comprising:
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a hollow cylindrical case provided at a periphery thereof with an axial opening and having a coupling section; a terminal plate attached to a capacitor element housing in said cylindrical case and having a coupling section, said terminal plate being coupled with said cylindrical case by said coupling sections; and resin filler injected between said capacitor element and said cylindrical case, wherein one of said coupling sections of said cylindrical case and said terminal plate has a convex shape and the other has a concave shape, and wherein at least one of said coupling sections is made of thermoplastic resin, wherein said coupling sections extend flat. - View Dependent Claims (2, 3, 4)
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5. A capacitor, comprising:
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a hollow cylindrical case provided at a periphery thereof with an axial opening and having a coupling section; a thermal plate attached to a capacitor element housed in said cylindrical case and having a coupling section, said thermal plate being coupled with said cylindrical case by said coupling sections; and resin filler injected between said capacitor element and said cylindrical case, wherein one of said coupling sections of said cylindrical case and said terminal plate has a convex shape and the other has a concave shape, and wherein a space is defined between a tip edge of said convex-shaped coupling section and a bottom edge of said concave-shaped coupling section, wherein said coupling sections extend flat. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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Specification