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US 2013/0153347 A1Published application
Damper
AssigneeNifco Inc.
InventorsHayato Oda, Yoshihisa Takei
Life of this patent
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Abstract
A silicone oil (18) is filled inside a housing (12) of rotation damper (10), and a rotor brake plate (24) provided to be connected to a lower end portion of a rotating shaft (22) of a rotor (20) is rotatably housed inside the housing (12). Also, an O-ring (30) is disposed between the housing (12) and the rotating shaft (22) to prevent the silicone oil (18) from leaking outside of the housing (12). The O-ring (30) is formed by a silicone rubber having a hardness of 25 degrees or above and 45 degrees or less according to the Durometer Hardness Testing (type A) of JIS K 6253.
Claims2
A damper, comprising:
- a housing;
- a damper oil filled inside the housing;
- a rotor including a rotating shaft with one portion protruding from the housing, and a rotor brake plate connected to a lower end portion of the rotating shaft and rotatably housed inside the housing;
- and
- an annular seal material disposed between the housing and the rotating shaft to prevent the damper oil from leaking outside of the housing,
- wherein the annular seal material is formed by a silicone rubber having a hardness of 25 degrees or above and 45 degrees or less according to Durometer Hardness Testing (type A) of JIS K 6253.
3 more elements
Dependencies are inferred from the claim text.