Linear motion guide apparatus
AssigneeThk Co., Ltd.
InventorsBin Zhao, Nobuyuki Ikegami
Life of this patent
Estimating the term…
Abstract
A linear motion guide apparatus in which a guide rail can be readily provided with a meshing portion that meshes with a gear is provided. The linear motion guide apparatus includes: two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element; and a cage configured to hold the rolling element and rotatably hold a gear engaging with a meshing portion provided to at least one of the two guide rails. The meshing portion includes a plurality of circular holes arranged in the longitudinal direction on the guide rail. Each of the circular holes has a wall surface formed in a cylindrical shape.
Claims12
A linear motion guide apparatus comprising:
- two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element;
- and
- a cage configured to hold the rolling element and rotatably hold a gear engaging with a meshing portion provided to at least one of the two guide rails, wherein
- the meshing portion includes a plurality of circular holes arranged in the longitudinal direction on the guide rail,
- each of the circular holes has a wall surface formed in a cylindrical shape, and
- a gap (g1) in a rotational direction of the gear between a tooth tip portion of each tooth of the gear and the wall surface of the circular hole is smaller than a gap (g2) in a rotation axis direction of the gear.
A linear motion guide apparatus comprising:
- two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element;
- and
- a cage configured to hold the rolling element and rotatably hold a gear engaging with a meshing portion provided to at least one of the two guide rails, wherein
- the meshing portion includes a plurality of circular holes arranged in the longitudinal direction on the guide rail,
- each of the circular holes has a wall surface formed in a cylindrical shape, and
- a length, in a rotational direction, of a tooth tip portion of each tooth of the gear is greater than a face width of the tooth tip portion.
A linear motion guide apparatus comprising:
- two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element;
- and
- a cage configured to hold the rolling element and rotatably hold a gear engaging with a meshing portion provided to at least one of the two guide rails, wherein
- the meshing portion includes a plurality of circular holes arranged in the longitudinal direction on the guide rail,
- each of the circular holes has a wall surface formed in a cylindrical shape, and
- a dedendum portion of each tooth of the gear is constricted as viewed in a rotation axis direction of the gear.
Dependencies are inferred from the claim text.