Patent ID: 7278686

Claim:
A height adjusting device for adjusting a height of a vehicle seat, said vehicle seat including a seat cushion frame supported through first and second pairs of spaced apart brackets, said seat cushion frame having a pair of first and second spaced apart side frame sections, said height adjusting device comprising first and second pairs of linkage members, said first pair of linkage members being bridged between first portions of said side frame sections and said first pair of said spaced apart brackets, said second pair of linkage members being bridged between second portions of said side frame sections and said second pair of said spaced apart brackets, a first connecting shaft interconnecting said second pair of linkage members, a second connecting shaft interconnecting said first pair of linkage members, an operating knob attached to said first side frame section, said operating knob having a rotating shaft that is projected inward of said seat cushion frame through said first side frame section, a pinion gear arranged inside said seat cushion frame and mounted on said rotating shaft of said operating knob, a sector gear pivotally supported to said first side frame section by a supporting pin, and a linkage rod coupled at one end thereof to a portion of said sector gear that is offset from said supporting pin of said sector gear, and coupled at the other end thereof to one of said second linkage members, characterised in that said height adjusting device further includes a cover covering said pinion gear and said sector gear, said cover being fixed onto an inner surface of said first side frame section, ends of said rotating shaft and supporting pin being supported by said cover, whereby said rotating shaft and said supporting pin are supported by both said first side frame section and said cover.