| 摘要 |
The invention concerns a device for producing an accurate linear displacement of a moving element (1) relative to a fixed part (5), by a linear actuator comprising a stepper motor (11) of which the rotor, forming a nut, is axially run through by a screw rod (12), one of the two parts, motor or screw rod, being fixed to said moving element (1) and the other to said fixed part (5), means for guiding the displacement of the moving element (1) being provided, said guiding means and said screw rod (12) being parallel. The invention is characterised in that the fixing of said screw rod to one of the two parts, moving element (1) or fixed part (5), is done by butting a resilient membrane (16) fixed in its centre to an end of the rod (12) and at its periphery to said part.
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