DUST SEAL
First Claim
1. A dust seal for sealing a gap between an opening in a receiving member and a shaft inserted through the opening, comprising:
- a dust seal body in an annular shape centered about an axis;
a bushing in an annular shape centered about the axis, through which the shaft is slidably inserted; and
a seal lip in an annular shape centered about the axis, provided at one end of the bushing in a direction of the axis, and slidably contacting an outer peripheral surface of the shaft, whereinthe dust seal body including;
an attaching portion that is fitted into the opening of the receiving portion, is in an annular shape centered about the axis, and is made of an elastic material,a first accordion unit that has an accordion made of an elastic material and is an annular shape centered about the axis, anda second accordion unit that has an accordion made of an elastic material and is an annular shape centered about the axis,the first accordion unit and the second accordion unit are arranged side by side in the direction of the axis,the first accordion unit is integral with the attaching portion, is joined to an inner peripheral surface of the attaching portion at an outer periphery, and is bonded to an outer peripheral surface of the bushing at an inner periphery by vulcanization, andthe second accordion unit is fixed to the inner peripheral surface of the attaching portion at an outer periphery, and engaged with the outer peripheral surface of the bushing at an inner periphery.
1 Assignment
0 Petitions
Accused Products
Abstract
A dust seal includes an annular dust seal body, an annular bushing through which a shaft is slidably inserted, and an annular seal lip provided on the bushing and slidably contacting the shaft. The dust seal body includes an annular elastic attaching portion that is fitted into an opening of a receiving portion, an annular first accordion unit having an elastic accordion, and an annular second accordion unit having an elastic accordion. The first accordion unit and the second accordion unit are arranged side by side in the direction of an axis. The first accordion unit is integral with the attaching portion, is joined to the attaching portion at an outer periphery, and is bonded to the bushing at an inner periphery by vulcanization. The second accordion unit is fixed to the attaching portion at an outer periphery, and engaged with the bushing at an inner periphery.
26 Citations
6 Claims
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1. A dust seal for sealing a gap between an opening in a receiving member and a shaft inserted through the opening, comprising:
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a dust seal body in an annular shape centered about an axis; a bushing in an annular shape centered about the axis, through which the shaft is slidably inserted; and a seal lip in an annular shape centered about the axis, provided at one end of the bushing in a direction of the axis, and slidably contacting an outer peripheral surface of the shaft, wherein the dust seal body including; an attaching portion that is fitted into the opening of the receiving portion, is in an annular shape centered about the axis, and is made of an elastic material, a first accordion unit that has an accordion made of an elastic material and is an annular shape centered about the axis, and a second accordion unit that has an accordion made of an elastic material and is an annular shape centered about the axis, the first accordion unit and the second accordion unit are arranged side by side in the direction of the axis, the first accordion unit is integral with the attaching portion, is joined to an inner peripheral surface of the attaching portion at an outer periphery, and is bonded to an outer peripheral surface of the bushing at an inner periphery by vulcanization, and the second accordion unit is fixed to the inner peripheral surface of the attaching portion at an outer periphery, and engaged with the outer peripheral surface of the bushing at an inner periphery. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification