| 摘要 |
PURPOSE: A device for fixing the height of a pumping ball type seat is provided to simplify structure by reduction in components of a clutch since a power transfer route is formed coaxially to the center of a shaft. CONSTITUTION: A device for fixing the height of a pumping ball type seat comprises a brake drum(1), a mounting knob(3), a clutch unit(A), and a brake unit(B). The brake drum is coupled with a rear cover(2). The mounting knob transfers rotation force to the inside of the brake drum. The clutch unit forms the frictional force with the rotation through the mounting knob. The clutch unit has a power transfer route which is formed coaxially to the center of the shaft. The brake unit releases wedging operation on a brake drum. The brake unit rotates the sector gear of the sheet link and adjusts the height of the seat. |
