US 2015/0377342 A1Published application

Ball screw device

AssigneeHiwin Technologies Corp.

InventorsWei Ying CHU, Yen Ying SUNG

Life of this patent

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Abstract

A ball screw device includes an elongated shaft having an outer groove, a ball nut having a screw hole for receiving the elongated shaft and having a passage communicating with the screw hole of the ball nut, and a lubricating device includes an inner cylindrical element engaged onto the elongated shaft and secured to the ball nut, a housing attached onto the cylindrical element and contacted with the ball nut, and the housing includes a chamber for receiving a lubricating grease, an oil distributing member is engaged into the passage of the ball nut and engaged into the screw hole of the ball nut for engaging with the elongated shaft, and an inner element is engaged in the housing and engaged with the distributing member for supplying the lubricating grease to the distributing member.

Claims7

Dependent claims

A ball screw device comprising:

an elongated shaft including a groove formed on an outer peripheral surface thereof,
a ball nut including a screw hole formed therein for receiving said elongated shaft, said ball nut including a passage formed therein and communicating with said screw hole of said ball nut, and
a lubricating device including:
an inner cylindrical element having a bore formed in said cylindrical element for receiving said elongated shaft, said cylindrical element including a first end portion secured to said ball nut and including a second end portion,
a housing attached onto said cylindrical element and contacted with said ball nut, and said housing including a chamber formed therein for receiving a lubricating grease,
an oil distributing member engaged into said passage of said ball nut and including a first end portion engaged into said screw hole of said ball nut for engaging with said groove of said elongated shaft, and
an inner element engaged in said chamber of said housing for absorbing said lubricating grease, and said inner element including a first end portion engaged into said passage of said ball nut and engaged with said distributing member for supplying said lubricating grease to said distributing member, and then to said groove of said elongated shaft.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/642,817Filed 10 Mar 2015
Priority: TW 10312179525 Jun 2014
Published: 31 Dec 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

F16H 57/0497
Type of gearings to be lubricated, cooled or heated: screw mechanisms
C10M 169/02
Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials,…:…
F16H 57/0406
Features relating to lubrication or cooling or heating: absorption elements for lubricants, e.g. oil felts
F16H 57/045
Features relating to lubrication or cooling or heating: lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting…