Elastic hinge for plastic frames of eyeglasses, which comprises a first and a second articulation element respectively associable with a first and a second component of eyeglasses. The first articulation element comprises a male element which is susceptible of sliding inside a seat of the first component and comprises a head portion, a rod-like portion fixed to the head portion, an anchorage body slidably coupled to the rod-like portion and provided with a retention portion provided with anchorage elements. The first articulation element also comprises an expander body adapted to interfere with the anchorage body in order to externally expand the retention portion of the latter towards the internal wall of the seat so as to engage the anchorage elements of the retention body with the first component of the eyeglasses.

A hinge assembly comprising a guide body, a first connection element, a second connection element, a first spring and a second spring; the guide body comprising a first end surface and a second end surface provided at opposite sides respectively, wherein the first end surface is provided with a first guide slot, the second end surface is provided with a second guide slot, and the first guide slot and the second guide slot intersect orthogonally, the first connection element is provided with first connection end extending beyond an end surface of the endpiece, the second connection element is provided with a second connection end extending beyond an end surface of the temple end, the first connection end and the second connection end are hingedly connected and pivoted with each other within the guide body; A glasses frame comprising an endpiece, a temple, and a hinge assembly.

Elastic hinge for eyeglass frames, which comprises an articulation screw engaged in the holes of two articulation elements. The articulation screw comprises a shank provided with a narrow portion, which is engaged in the hole of a first tab of an articulation element, and with an enlarged annular portion, which forms a step and is engaged in the hole of a head portion of the other articulation element. The articulation screw assumes an end stop position, in which it is tightened and aligned with the hinging axis, and a blocking position, in which it is loosened and is tilted with respect to the hinging axis in response to the elastic force exerted by an elastic device, such that the step of the articulation screw interferes with the edge of the hole of the first tab of the articulation element, preventing a further unscrewing of the articulation screw.

Process for assembling an elastic hinge for eyeglass frames comprising a first articulation provided with a head with a first hole, a second articulation having two shoulders provided with second holes, and a pin having a stem provided with a thinned final portion. The process provides for inserting the head of the first articulation between the two shoulders of the second articulation with the first hole of the first articulation non-aligned with respect to the second holes of the second articulation, an opening thus remaining between such holes. A step for inserting the pin is provided, during which the thinned portion of the pin is wedged in the aforesaid opening between the holes and is screwed into one of the second holes of the shoulders of the second articulation.

An elastic hinge that can make the earpiece extend outwards includes a slingshot case secured to an earpiece and slingshot core secured to a frame. The slingshot case has an installation hole, into which the slingshot core is inserted and fixed. The slingshot core has an installation base and central spindle which is fixed onto the installation base and extends inside the installation hole. A fixed tube and a spring are provided on the spindle, and a stopper is provided to stop the spring and fixed tube from coming apart. A pair of barbs, which are elastic and able to retract or dilate, are provided on the fixed tube, and which interact with a ring inside the installation hole. When the fixed tube passes through the ring, the barbs retract and then extend outwards to thereby connect the slingshot core and slingshot case.

An elastic hinge for eyeglasses includes: a box-shaped housing with an inlet aperture; a fork carriage, slidably mounted in a guiding cavity inside the box-shaped housing opposing an elastic element; and an elastic holding clip, snap-engageable with a retaining structure of the housing cavity, against which one end of the elastic element abuts. The elastic holding clip is generally C-shaped, providing a resting arm and a flexible arm joined by a connecting portion, the flexible arm having an engaging unit to snap-engage with the retaining structure, the resting arm and flexible arm elastically biased one towards the other by inner walls of the housing. The flexible arm is integral with at least one bias element, accessible from an inlet aperture of the housing, defining bias planes to be engaged with a tool, introduced via the inlet, for imparting a disengaging bias, bending the flexing arm towards the resting arm.

Provided herein is a flexible hinge comprising a tension spring (1), a sliding element (2), a sliding element guide (3), a spring tensioner (4), a stop (5) for stopping the longitudinal movement of the sliding element (2), a fastener (6), and a bearing shield (7). The flexible hinge disclosed herein can be installed in a pair of eyeglasses comprising a pair of temples and a frame front so as to connect the temples to the frame front. The flexible hinge can be fixed to the temple with the stop (5) at one end and to the frame front with the fastener (6) at another end. The fastener (6) is used to engage sliding element (2) with the bearing shield (7). The sliding element guide (3) enables longitudinal movement of the sliding element (2) along the x-axis and prevents its movement along other axes.

A hinge for a spectacles frame, comprising a front-face element, a side element and a connecting element connecting said front-face element to said side element, said connecting element comprising a base member, mounted in the side element, and a head member, housed in the front-face element, the base member being articulated directly to said head member about a vertical first axis of articulation, the head member of the connecting element being articulated directly to the front-face element about a horizontal second axis of articulation.

Process for mounting an elastic hinge on an eyeglass frame, which provides for fixing a first pivot element to a first component of an eyeglass frame, for fixing a second pivot element to a second component of the eyeglass frame, and for engaging a hinge pin within first holes of the first pivot element and within second holes of the second pivot element, wherein a thinned portion of the hinge pin interferes with two head portions of the first pivot element in order to align the first holes of the first pivot element with the second holes of the second pivot element.

A hinge assembly comprising a guide body, a first connection element, a second connection element, a first spring and a second spring; the guide body comprising a first end surface and a second end surface provided at opposite sides respectively, wherein the first end surface is provided with a first guide slot, the second end surface is provided with a second guide slot, and the first guide slot and the second guide slot intersect orthogonally, the first connection element is provided with first connection end extending beyond an end surface of the endpiece, the second connection element is provided with a second connection end extending beyond an end surface of the temple end, the first connection end and the second connection end are hingedly connected and pivoted with each other within the guide body; A glasses frame comprising an endpiece, a temple, and a hinge assembly.