Motion guide device

Patent metadata

Field	Value
Publication number	US-9863478-B2
Application number	US-201515124183-A
Country	US
Kind code	B2
Filing date	Mar 10, 2015
Priority date	Mar 14, 2014
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A motion guide device ( 1 ) includes: a track body that extends in a longitudinal direction; a movable body ( 20 ) that is mounted on the track body and is movable along the track body; an encoder scale that is disposed at the track body in the longitudinal direction; a sensor ( 50 ) that is disposed opposite to the encoder scale; and a folder ( 60 ) that is disposed at an end face of the movable body ( 20 ) in the longitudinal direction, houses the sensor ( 50 ) in a width direction of the track body, and holds the sensor such that the sensor faces the encoder scale.

First claim

The invention claimed is:

1. A motion guide device comprising:
a track body that extends in a longitudinal direction;
a movable body mounted on the track body and configured to be movable along the track body;
an encoder scale disposed at the track body in the longitudinal direction;
a sensor disposed opposite to the encoder scale; and
a folder disposed at an end face of the movable body in the longitudinal direction and configured to house the sensor in a width direction of the track body and hold the sensor such that the sensor faces the encoder scale, wherein
the folder comprises a guide part that guides the sensor in the width direction of the track body, and
the guide part is a fitting part which slidably receives the sensor into the folder in the width direction of the track body.

2. The motion guide device according to claim 1 , wherein the folder includes a holder that positions the sensor in the width direction.

3. The motion guide device according to claim 2 , wherein the holder includes a magnet part that attracts and holds the sensor.

4. The motion guide device according to claim 3 , wherein the magnet part is changeable in position in the width direction.

5. The motion guide device according to claim 4 , further comprising a dust-proof seal disposed on the end face of the folder in the longitudinal direction and configured to prevent foreign materials from intruding between the track body and the movable body.

6. The motion guide device according to claim 3 , further comprising a dust-proof seal disposed on the end face of the folder in the longitudinal direction and configured to prevent foreign materials from intruding between the track body and the movable body.

7. The motion guide device according to claim 2 , further comprising a dust-proof seal disposed on the end face of the folder in the longitudinal direction and configured to prevent foreign materials from intruding between the track body and the movable body.

8. The motion guide device according to claim 1 , further comprising a dust-proof seal disposed on the end face of the folder in the longitudinal direction and configured to prevent foreign materials from intruding between the track body and the movable body.

9. The motion guide device according to claim 1 , wherein the folder includes a holder that positions the sensor in the width direction.

10. The motion guide device according to claim 1 , further comprising a dust-proof seal disposed on the end face of the folder in the longitudinal direction and configured to prevent foreign materials from intruding between the track body and the movable body.

Assignees

• Thk Co Ltd

Inventors

• Sakagami Tetsuya

Classifications

• F16C41/007 Primary

  Encoders, e.g. parts with a plurality of alternating magnetic poles · CPC title

• F16C29/082

  fixed to the way · CPC title

• F16C29/065

  with rollers · CPC title

• F16C29/0609

  of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps · CPC title

• F16C29/00

  Bearings for parts moving only linearly (F16C32/06 takes precedence; incorporated in flexible shafts F16C1/28 {; parts of bearings in general and special methods for making bearings or parts thereof in general F16C33/00}) · CPC title