Submersible motor and waterproof connector

Patent metadata

Field	Value
Publication number	US-10693258-B2
Application number	US-201716340591-A
Country	US
Kind code	B2
Filing date	Nov 22, 2017
Priority date	Nov 22, 2016
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

The present invention relates to a high-voltage submersible motor and a waterproof connector for use in the submersible motor. The submersible motor includes a motor body ( 36 ), a power cable ( 37 a ), a cable contact ( 50 ) electrically connected to the power cable ( 37 a ), a cable-side insulating member ( 49 ) to which the cable contact ( 50 ) is liquid-tightly coupled, a motor contact ( 42 ) connected to the cable contact ( 50 ), a motor-side insulating member ( 41 ) to which the motor contact ( 42 ) is liquid-tightly coupled, and an insulating resin ( 93 ) that fills an enclosed space ( 60 ) formed between the cable-side insulating member ( 49 ) and the motor-side insulating member ( 41 ). A connecting portion of the cable contact ( 50 ) and the motor contact ( 42 ) is covered with the resin ( 93 ).

First claim

The invention claimed is:

1. A submersible motor comprising:
a motor body;
a power cable for supplying power to the motor body;
a cable contact electrically connected to the power cable;
a cable-side insulating member to which the cable contact is liquid-tightly coupled;
a motor contact connected to the cable contact;
a motor-side insulating member to which the motor contact is liquid-tightly coupled; and
an insulating resin that fills an enclosed space formed between the cable-side insulating member and the motor-side insulating member, wherein a connecting portion of the cable contact and the motor contact is covered with the resin.

2. The submersible motor according to claim 1 , further comprising a conductive cover member to which the cable-side insulating member is liquid-tightly coupled, the conductive cover member having a resin injection hole communicating with the enclosed space.

3. A waterproof connector comprising:
a cable contact which is electrically connectable to a power cable;
a cable-side insulating member to which the cable contact is liquid-tightly coupled;
a motor contact which is connectable to the cable contact;
a motor-side insulating member to which the motor contact is liquid-tightly coupled; and
an insulating resin that fills an enclosed space formed between the cable-side insulating member and the motor-side insulating member, wherein a connecting portion of the cable contact and the motor contact is covered with the resin.

4. The waterproof connector according to claim 3 , further comprising a conductive cover member to which the cable-side insulating member is liquid-tightly coupled, the conductive cover member having a resin injection hole communicating with the enclosed space.

5. A submersible motor comprising:
a motor body;
a power cable for supplying power to the motor body;
a cable contact electrically connected to the power cable;
a cable-side insulating member to which the cable contact is liquid-tightly coupled;
a motor contact connected to the cable contact;
a motor-side insulating member to which the motor contact is liquid-tightly coupled; and
an insulating enclosure disposed in an enclosed space formed between the cable-side insulating member and the motor-side insulating member, wherein the enclosure surrounds those exposed portions of the cable contact and the motor contact which are located in the enclosed space.

6. The submersible motor according to claim 5 , wherein one end of the enclosure is detachably connected to the cable-side insulating member, while the other end of the enclosure is detachably connected to the motor-side insulating member.

7. The submersible motor according to claim 5 , wherein the enclosure has a labyrinth structure comprising at least a first enclosure portion extending from the cable-side insulating member toward the motor-side insulating member, and a second enclosure portion extending from the motor-side insulating member toward the cable-side insulating member.

8. The submersible motor according to claim 5 , further comprising a conductive cover member to which the cable-side insulating member is liquid-tightly coupled, the enclosure having an exterior surface being away from the conductive cover member.

9. A waterproof connector comprising:
a cable contact which is electrically connectable to a power cable;
a cable-side insulating member to which the cable contact is liquid-tightly coupled;
a motor contact which is connectable to the cable contact;
a motor-side insulating member to which the motor contact is liquid-tightly coupled; and
an insulating enclosure disposed in an enclosed space formed between the cable-side insulating member and the motor-side insulating member, wherein the enclosure surrounds those exposed portions of the cable contact and the motor contact which are located in the enclosed space.

10. The waterproof connector according to claim 9 , wherein one end of the enclosure is detachably connected to the cable-side insulating member, while the other end of the enclosure is detachably connected to the motor-side insulating member.

11. The waterproof connector according to claim 9 , wherein the enclosure has a labyrinth structure comprising at least a first enclosure portion extending from the cable-side insulating member toward the motor-side insulating member, and a second enclosure portion extending from the motor-side insulating member toward the cable-side insulating member.

12. The waterproof connector according to claim 9 , further comprising: a conductive cover member to which the cable-side insulating member is liquid-tightly coupled, the enclosure having an exterior surface being away from the conductive cover member.

Assignees

• Ebara Corp

Inventors

• Imafuku Masaaki
• Watanabe Takuro

Classifications

• H01R13/523 Primary

  for use under water · CPC title

• E21B17/0285

  characterised by electrically insulating elements · CPC title

• H01R13/5205

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

• H01R13/5216

  characterised by the sealing material, e.g. gels or resins · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title