FIELD: mechanical engineering. ;SUBSTANCE: invention relates to the field of technology, where spring supports are used to support movable elements with the transfer of constant force to supporting structures. The stiffener is made in the form of a single spring (1) located in the inner cavity of the body (9) of the constant force support, between the plates (3, 4) fixed on the guide pin (7), limited on one side by the support plate (2), fixed nut (15) with a gap allowing axial rotation of the stud (7), while the support plate (2) is equipped with a pin (21), which prohibits axial rotation of the plate (3) with a threaded hole when adjusting the spring force (1) with the nut (16) , fixed at the second end of the stud (7). There are rollers (18) on the plates (2, 4). The rollers interact with the curved profile of the mirror cams (5, 6) fixed on the body (9) of the constant force support, and transmit the force from the base plate (10), fixed above the spring (1), by means of four levers (8) connected in pairs hinged on the base plate (10) with one end and pivotally on the plates (2, 3) with the other end, and the spring (1) is fixed relative to the body (9) with a pin (20) through a toothed plate (19) into a toothed groove (17) located on the support body (9), while the base plate (10) is equipped with a stop (12) and a glass with a threaded hole (11) fixed on the threaded rod (13) with fixing the position with the nut (14).;EFFECT: invention reduces the size and weight of the support and simplifies the adjustment of the spring force at the installation site.;1 cl, 3 dwg
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