Method of making electronic equipment
First Claim
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1. A method of manufacturing an electronic equipment wherein an electronic part is accommodated in a casing filled with resin and having a resin inlet at its one end portion and an opening at the other end portion, the method comprising the steps of:
- putting said electronic part into said casing;
attaching a cover over said opening at said casing, said cover forming a gap for an air flow between said casing and said cover;
lowering a pressure in said casing by externally discharging air in said casing through said gap;
said supplying resin through said resin inlet into said casing;
wherein said electronic part includes;
a coil, a coil casing for accommodating said coil, and a circuit board; and
supplying primary filler resin into said coil casing already accommodating said coil and a part of said circuit board, and attaching said coil casing to said casing after hardening of the primary filler resin supplied into said coil casing.
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Abstract
An electronic equipment such as a proximity sensor. A groove for discharging air is formed at coil casing (7) arranged at a front surface of the proximity sensor. An opening (43) is formed at a clamp portion (9) holding a code (10) behind a metal casing (8). The proximity sensor (1) is held at a low pressure, and resin is supplied through the opening (43) at the clamp portion (9), whereby the casing can be filled with the resin in a short time.
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Citations
2 Claims
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1. A method of manufacturing an electronic equipment wherein an electronic part is accommodated in a casing filled with resin and having a resin inlet at its one end portion and an opening at the other end portion, the method comprising the steps of:
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putting said electronic part into said casing;
attaching a cover over said opening at said casing, said cover forming a gap for an air flow between said casing and said cover;
lowering a pressure in said casing by externally discharging air in said casing through said gap;
saidsupplying resin through said resin inlet into said casing;
whereinsaid electronic part includes;
a coil, a coil casing for accommodating said coil, and a circuit board; and
supplying primary filler resin into said coil casing already accommodating said coil and a part of said circuit board, and attaching said coil casing to said casing after hardening of the primary filler resin supplied into said coil casing. - View Dependent Claims (2)
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Specification