Side seal for linear guide apparatus, and linear guide apparatus
AssigneeNsk Ltd.
InventorKazuaki Ooga
Life of this patent
Estimating the term…
Abstract
Two kinds of side seals are assembled by a seal member, a holder plate, and a cover. A base of the seal member is formed in a symmetrical shape with respect to a center line of a thickness direction. The seal member includes recesses formed in both faces of the base in the thickness direction and fitted with a protrusion of the holder plate. A lip of the seal member is inclined in a direction from a first face toward a second face in the thickness direction.
Claims9
A side seal for a linear guide apparatus attached to each of both ends in a moving direction of a slider constituting a linear guide apparatus, the linear guide apparatus comprising a guide rail, the slider, and a plurality of rolling elements, for sealing a space between the slider and a top face of the guide rail and between the slider and both side faces of the guide rail, the side seal comprising:
- a cover comprising an upper member facing the top face of the guide rail with a clearance, and side members facing both side faces of the guide rail with a clearance;
- two seal members disposed between the cover and the slider, and each of the two seal members comprising a lip in contact with the top face and both side faces of the guide rail and a base, a base end of which has a first face and a second face;
- and
- two holder plates, each of the two holder plates holding a respective base of a respective one of the two seal members,
- wherein engaging portions are formed on both faces of the base of each of the two seal members in a thickness direction, the engaging portions being symmetrical with respect to a center line of the thickness direction, and
- wherein the lip of each of the two seal members is inclined from the first face toward the second face, and
- wherein a holder portion formed in an internal side of each of the two holder plates has a protrusion to be fitted into one of the engaging portions of a respective one of the two seal members, a first holding face formed inwardly of the protrusion, a second holding face formed outwardly of the protrusion, and a third holding face formed outwardly of the second holding face, and
- wherein the two seal members are a first seal member and a second seal member, and
- wherein the first face of the base end of the base of the first seal member comes into contact with the second holding face of the holder portion of a first one of the two holder plates to engage the engaging portion formed on the first face of the base end of the base of the first seal member with the first one of the two holder plates, and
- wherein the second face of the base end of the base of the second seal member comes into contact with the second holding face of the holder portion of a second one of the two holder plates to engage the engaging portion formed on the second face of the base end of the base of the second seal member with the second one of the two holder plates, and
- wherein the first seal member and the second seal member are assembled in combination.
Dependencies are inferred from the claim text.