Foreign matter attracting structure

Patent metadata

Field	Value
Publication number	US-2016003345-A1
Application number	US-201514850987-A
Country	US
Kind code	A1
Filing date	Sep 11, 2015
Priority date	Mar 25, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

A foreign matter attracting structure includes: an attracting body for attracting foreign matter in lubricating oil, wherein the attracting body includes a magnet and a capturing body which is composed of a weakly magnetic material, and the capturing body is disposed at a position which is magnetized by a magnetic force of the magnet.

First claim

What is claimed is:

1 . A foreign matter attracting structure comprising:
an attracting body for attracting foreign matter in lubricating oil, wherein the attracting body includes a magnet, and a capturing body which is composed of a weakly magnetic material, and the capturing body is disposed at a position which is magnetized by a magnetic force of the magnet.

2 . The foreign matter attracting structure according to claim 1 , wherein the capturing body is configured such that the lubricating oil can pass through an inside thereof.

3 . The foreign matter attracting structure according to claim 1 , wherein the capturing body is composed of an aggregate of a wire made of a weakly magnetic material.

4 . The foreign matter attracting structure according to claim 1 , wherein the capturing body is configured with a plate-like member made of a weakly magnetic material with a through-hole formed therein.

5 . The foreign matter attracting structure according to claim 1 , wherein the attracting body further includes a nonmagnetic cover which covers the magnet.

6 . The foreign matter attracting structure according to claim 1 , further comprising:
a lubricating oil flow path in which the attracting body is disposed such that a position thereof is maintained.

7 . The foreign matter attracting structure according to claim 6 , wherein the lubricating oil flow path has a small-diameter portion and a large-diameter portion provided further toward the upstream side in a flow direction than the small-diameter portion, and the attracting body is disposed in the large-diameter portion.

8 . The foreign matter attracting structure according to claim 7 , further comprising:
a first flow path member with the small-diameter portion and the large-diameter portion formed therein; and a second flow path member which is detachably connected to the first flow path member from the upstream side in the flow direction and in which a portion of the circulation flow path is formed on the inside thereof, wherein when the second flow path member is removed from the first flow path member, the attracting body can be extracted from the first flow path member to the outside.

9 . A foreign matter attracting structure for attracting foreign matter in lubricating oil by an attracting body, comprising:
a gear device which performs lubrication of a gear by the lubricating oil, wherein the attracting body includes a magnet, and a nonmagnetic cover which covers the magnet.

10 . The foreign matter attracting structure according to claim 5 , further comprising:
a support member which includes a fixed portion fixed outside the lubricating oil which is stored in a gear device, and a mounting portion which is mounted on the attracting body, wherein the attracting body is positioned in the lubricating oil by the support member.

11 . The foreign matter attracting structure according to claim 10 , wherein the fixed portion of the support member is fixed to a lid member which opens and closes an inspection port of the gear device.

12 . The foreign matter attracting structure according to claim 5 , wherein the attracting body is fixed to a drain plug of a gear device.

13 . The foreign matter attracting structure according to claim 5 , further comprising:
a circulation flow path which sucks the lubricating oil from a gear accommodating chamber which accommodates a gear of a gear device, and discharges the lubricating oil into the gear accommodating chamber again, wherein the attracting body is installed in the circulation flow path.

14 . The foreign matter attracting structure according to claim 13 , further comprising:
an oil tank provided separately from the gear accommodating chamber in the course of the circulation flow path, wherein the attracting body is installed in the oil tank.

15 . The foreign matter attracting structure according to claim 5 , wherein the nonmagnetic cover is formed so as to have an outer shape non-similar to an outer shape of the magnet.

16 . The foreign matter attracting structure according to claim 5 , wherein the nonmagnetic cover covers the entire outer surface of the magnet.

17 . The foreign matter attracting structure according to claim 5 , wherein a plurality of mounting portions for mounting the attracting body are provided in a gear device.

18 . The foreign matter attracting structure according to claim 5 , wherein the attracting body is configured such that the magnet can be taken in and out of the nonmagnetic cover.

19 . The foreign matter attracting structure according to claim 5 , wherein the nonmagnetic cover is fixed to the magnet by a string-like member made of a nonmagnetic material or a weakly magnetic material.

Assignees

• Sumitomo Heavy Industries

Inventors

• Abe Kazuhisa
• Kubo Aizoh

Classifications

• F16H57/0404 Primary

  Lubricant filters · CPC title

• F16H57/045

  Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case · CPC title

• B03C1/034

  characterised by the matrix elements · CPC title

• F16H57/031

  characterised by covers or lids for gearboxes · CPC title

• F16H57/0402 Primary

  Cleaning of lubricants, e.g. filters or magnets · CPC title