Sealing structure for linear motion bearing
AssigneeTsubakimoto Precision Products Co., Ltd.
InventorMitsuyasu Tonogai
Life of this patent
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Abstract
A sealing structure for preventing entry of foreign matter or lubricant leakage in the gaps formed between a linear motion bearing assembly movable along the length of a rail base. An elastic seal includes an end portion retained at the junction of the ends of the assembly with the rail base, and connecting portions integrally formed with the end portions at the junction of the sides of the assembly with the rail base. The inner periphery of the seal is slightly smaller than the periphery of the rail base to provide a positive seal. The ends of the assembly include stepped portions with inner peripheries slightly larger than the outer periphery of the end portions to permit the sealing structure to self-position above the rail base.
Claims8
A sealing structure for sealing in the axial and transverse directions gaps between a linear motion bearing assembly, and a rail base, the bearing assembly having longitudinally disposed members straddling the rail base, said structure comprising:
- a seal member disposed at the ends and sides of the bearing assembly and integrally formed for mounting to said bearing assembly by a retainer plate provided separately from said seal member.
Apparatus for sealing gaps formed between a linear motion bearing assembly movable along the length of a rail base, the bearing assembly having laterally disposed rolling members engaging the opposite sides of the rail base, said apparatus comprising:
- elastic seal means having a pair of end portions formed to fit against longitudinally spaced ends of the bearing assembly and adjacent to the rail base, and a pair of laterally spaced connecting portions formed as a unit between said end portions to fit against the rolling members and adjacent to the rail base, said end portions and said connecting portions having an inner periphery slightly smaller than the periphery of the rail base for providing a continuous seal therebetween.
Dependencies are inferred from the claim text.