Position detection apparatus along with a track rail unit and guide unit on which it is equipped
AssigneeNippon Thompson Co., Ltd.
InventorsTakashi Yatsu, Kouji Obara, Takaaki Hagiya
Life of this patent
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Abstract
A position detection apparatus having a scale with resilient engaging portions that attach to a lower surface of the scale and engage insertion holes in a track rail into which fastening members are inserted for fixing the track rail to a bed. Also, a track rail unit that includes the position detection apparatus, and a guide unit that includes the track rail unit.
Claims8
A position detection apparatus equipped with a scale and a detection head;
- wherein, said scale comprises a scale body in the form of a thin plate that extends along the lengthwise direction of a track rail, and engaging portions having resilience that attach to a lower surface of said scale body and engage insertion holes formed in said track rail into which fastening members are inserted for fixing said track rail to a bed.
A track rail unit having a track rail in which tracks are formed in the lengthwise direction and a position detection apparatus equipped with a scale and a detection head;
- wherein, said scale comprises a scale body in the form of a thin plate that extends along the lengthwise direction of a track rail, and engaging portions having resilience that attach to a lower surface of said scale body and engage insertion holes formed in said track rail into which fastening members are inserted for fixing said track rail to a bed.
A guide unit having a track rail in which tracks are formed along the lengthwise direction, a slider able to move relative to said track rail, and a position detection apparatus equipped with a scale and a detection head that detects the relative position of said track rail and said slider;
- wherein, said scale comprises a scale body in the form of a thin plate that extends along the lengthwise direction of a track rail, and engaging portions having resilience that attach to a lower surface of said scale body and engage insertion holes formed in said track rail into which fastening members are inserted for fixing said track rail to a bed.
Dependencies are inferred from the claim text.