# US 7,607,514 B2 · Linear guideway with a changeable oil-storage unit

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- Number: US 7,607,514 B2
- Document ID: US7607514B2
- Status: Granted
- Kind: B2
- Application number: 11/091,829
- Filed: 2005-03-28
- Published: 2006-07-27
- Granted: 2009-10-27
- Earliest claimed: 2005-01-13
- Assignees: Hiwin Technologies Corp.
- Inventors: Yung-Tsai Chuo
- Web page: https://patentgrep.com/patent/US7607514B2

## CPC

- F16C 29/0635: {whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end}
- F16C 29/0609: {of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps}
- F16C 33/6637: {with liquid lubricant}
- Y10T 403/32361: Engaging recess in radial face
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A linear guideway with a changeable oil-storage unit comprises: a rail, a sliding block; an end cap having an oil-filler hole fixed to either end of the sliding block, an oil-storage unit having an oil storage space, a connecting portion, and an oil feeding hole; a joint unit defined with a through hole, and two connecting portions connected to the oil filler hole and the connecting portion of the oil-storage unit, respectively. One of the connecting portions has a plug-in arrangement for providing quick connection to the oil-storage unit, the through hole, the oil filler hole and the oil feeding hole are connected to one other, forming an oil route for providing lubrication for the linear guideway.

## Claims

### Claim 1

A linear guideway with changeable oil-storage unit, comprising:
a rail being an elongated structure axially provided at both sides thereof with a rolling passage;
a sliding block slideably mounted on the rail and interiorly provided with a plurality of rollers employed to roll in the rolling passage, so as to make the sliding block slide relative to the rail;
an end cap fixed to either end of the sliding block for permitting the rollers to circulate in the sliding block;
an oil-storage unit defined with an oil storage space, a connecting portion, and an oil feeding hole arranged in the oil storage space;
a joint unit defined with a through hole, at both ends of the through hole being defined two connecting portions, one of the connecting portions being engaged in an oil filler hole of the end cap in a snap fit manner, and the other of the connecting portions being connected to the connecting portion of the oil-storage unit;
wherein the oil storage unit is mounted onto the end cap by the joint unit in such a manner that the connecting portion of the oil storage unit is engaged with one of the connecting portions of the joint unit in a snap fit manner and then the other one of the connecting portions of the joint unit is engaged in the oil filler hole of the end cap in a snap fit manner, so that once the oil storage unit is assembled onto the end cap by the joint unit, the oil feeding hole of the oil-storage unit connects forward the end cap and forms serves as an oil route for supplying oil from oil storage unit to the end cap.

### Claim 2 (depends on 1)

The linear guideway with changeable oil-storage unit as claimed in claim 1, wherein the connecting portion of the oil-storage unit is a projecting structure employed to insert in a recess structure of the joint unit.

### Claim 3 (depends on 1)

The linear guideway with changeable oil-storage unit as claimed in claim 1, wherein the connecting portion of the oil-storage unit is a recess-shaped structure for engaging with a projecting structure of the joint unit.

### Claim 4 (depends on 1)

The linear guideway with changeable oil-storage unit as claimed in claim 1, wherein the oil feeding hole of the oil-storage unit is sealed with a film, and the joint unit is provided with a knock pin, when the oil-storage unit is engaged with the joint unit, the knock pin will pierce through the film, so that the through hole of the joint unit is in communication with the oil feeding hole of the oil-storage unit, so as to form an oil route.

### Claim 5 (depends on 1)

The linear guideway with changeable oil-storage unit as claimed in claim 1, wherein the oil-storage space of the oil-storage unit comprises a base of the oil-storage unit and a cover.