A spring hinge for spectacles is described having a hinge part (1) guided displaceably in a bow-side housing (2) in the bow longitudinal direction and having a U-shaped sliding part (4), which projects from the hinge part (1) in the displacement direction and engages in a housing recess (3), and which receives a coiled spring (14) between its two legs (6), whose hinge-side end is supported on a buttress (13) belonging to the housing (2) and whose diametrically opposite end is supported on the web (5) connecting the two legs (6) of the U-shaped sliding part (4), the hinge part (1) having the sliding part (4) comprising a passage opening (16) running in the longitudinal direction of the coiled spring (14). In order to achieve advantageous construction conditions, it is suggested that the buttress (13) be screwed through the passage opening (16) of the hinge part (1) running coaxially to the coiled spring (14) into a female thread (11) of the housing (2) which is coaxial to the coiled spring (14).
Description
BRIEF DESCRIPTION OF THE DRAWING
The subject matter of the present invention is illustrated for exemplary purposes in the drawing.
FIG. 1 shows a spring hinge for spectacles according to the present invention in a simplified longitudinal section perpendicular to the hinge axis,
FIG. 2 shows this spring hinge in a section along lines II-II of FIG. 1, and
FIG. 3 shows a section along lines III-III of FIG. 1 in a larger scale.
Claims
1. A spring hinge for spectacles having a hinge part guided displaceably in a bow-side housing in the bow longitudinal direction and having a U-shaped sliding part, which projects from the hinge part in the displacement direction and engages in a housing recess, and which receives a coiled spring between the two legs, whose hinge-side end is supported on a buttress belonging to the housing and whose diametrically opposite end is supported on the web connecting the two legs of the U-shaped sliding part, the hinge part having the sliding part comprising a passage opening running in the longitudinal direction of the coiled spring, characterized in that the buttress (13) is screwed through the passage opening (16) of the hinge part (1) running coaxially to the coiled spring (14) into a female thread (11) of the housing (2) which is coaxial to the coiled spring (14).
2. The spring hinge according to claim 1, characterized in that the housing-side buttress (13) for the coiled spring (14) comprises a threaded head (12) engaging in the female thread (11) of the housing (2) and a guide pin (15), projecting from the threaded head (12), for receiving the coiled spring (14).
Patent Application
20070192991
