Electronic device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-9735498-B2
Application number	US-201615361284-A
Country	US
Kind code	B2
Filing date	Nov 25, 2016
Priority date	Dec 25, 2015
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Provided is an electronic device that is highly resistant to a water-soluble grinding oil and a method for manufacturing the same. An electronic device includes a main body and a cable including a lead wire, an insulating portion, and an outer coat, a first sealing portion that covers the insulating portion, and a second sealing portion that seals the first sealing portion, the insulating portion is made of a material that is more resistant to a water-soluble grinding oil than the outer coat is, and the first sealing portion is made of a material that has higher adherence to the insulating portion than that of the second sealing portion does.

First claim

The invention claimed is:

1. An electronic device comprising a main body having a function of the electronic device, and a cable that has a tip portion disposed inside the main body and is connected to the main body,
wherein the cable includes a lead wire, an insulating portion that covers the lead wire, and an outer coat that covers the insulating portion,
the insulating portion protrudes from an end surface on the tip portion side of the outer coat toward the tip portion, and is made of a material that is more resistant to a water-soluble grinding oil than the outer coat is,
the electronic device further comprising:
a first sealing portion that seals the insulating portion that protrudes from the end surface; and
a second sealing portion that seals the first sealing portion and is in contact with the main body and the outer coat,
the first sealing portion being made of a material that has higher adherence to the insulating portion than that of the second sealing portion does.

2. The electronic device according to claim 1 , wherein
the first sealing portion seals the end surface of the outer coat.

3. The electronic device according to claim 1 , wherein
the first sealing portion seals the end portion on the tip portion side of the lead wire.

4. The electronic device according to claim 1 , wherein
the second sealing portion is made of a material that has higher adherence to the outer coat than that of the first sealing portion does.

5. The electronic device according to claim 1 , wherein
the material for forming the insulating portion is a fluorine-based resin, and
the material for forming the first sealing portion is a polyamide-based resin.

6. The electronic device according to claim 5 , wherein
a material for forming the outer coat is a polyvinyl chloride resin, and the material for forming the second sealing portion is a polybutylene terephthalate resin.

7. A method for manufacturing an electronic device including a main body having a function of the electronic device, and a cable that has a tip portion disposed inside the main body and is connected to the main body, the method comprising:
a step of disposing, in the main body, a tip portion of the cable including a lead wire, an insulating portion that covers the lead wire, and an outer coat that covers the insulating portion;
a step of forming a first sealing portion that seals the insulating portion that protrudes from an end surface on the tip portion side of the outer coat toward the tip portion; and
a step of forming a second sealing portion that seals the first sealing portion and is in contact with the main body and the outer coat,
wherein the insulating portion is made of a material that is more resistant to a water-soluble grinding oil than the outer coat is, and
the first sealing portion is made of a material that has higher adherence to the insulating portion than that of the second sealing portion does.

Assignees

• Omron Tateisi Electronics Co

Inventors

• Katsube Shinya
• Fujiwara Taijiro
• Nakamura Masaki

Classifications

• H01B13/0036

  Details · CPC title

• H01R13/5205

  Sealing means between cable and housing, e.g. grommet (H01R13/5221 takes precedence) · CPC title

• H01B3/445

  from vinylfluorides or other fluoroethylenic compounds · CPC title

• H01R43/005

  for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing · CPC title

• H01B7/02

  Disposition of insulation · CPC title