RU2193791C2 - Articulation pivot for spectacle frames - Google Patents

Abstract

FIELD: medical engineering; spectacle frames. SUBSTANCE: articulation pivot used to join spectacle frame rim with U-link has two links and coupling member. One link of articulation pivot is made in the form of flexible- material bent strip one of whose ends is fixed to U-link and other end is made in the form of hinge. Articulation point links impart elastic properties to articulation pivot and are made in the form of decorative members of various configurations. Proposed articulation pivot can be used for both plastic and metal frames of spectacles. EFFECT: simplified design of articulated pivot sections. 5 dwg

Description

 The invention relates to medical equipment, in particular to spectacle frames.

 A known hinge in a spectacle frame containing an elastic element made in the form of a curved, flat spring, one end of which is rigidly attached to the temple, and the other is freely placed between the frame and the temple (1).

 Thanks to the use of spring elements in the hinges of known frames, excessive pressure on the temporal areas of the head is prevented, as well as slipping of glasses with inaccurate adjustment of the earbuds, which increases the convenience and comfort of wearing them. However, the hinges used for spring-loaded earhooks are not reliable in operation, since they have a complex structure consisting of several (for example, more than four) parts.

 A known design of a springy hinge for spectacle frames, containing a part mounted on the front of the spectacle frame and a part combined with a rod embedded in the housing, mounted on a handle. The rod is squeezed to the rear of the frame bow with a spring (2).

 The disadvantage of this design is the technological complexity of the parts and the complexity of the assembly with the spectacle frame.

 The closest known spring hinge connecting the frame of the frame with the temple of the glasses is a hinge consisting of two links and a connecting element. One of the links of the known hinge has a box-shaped body and comprises a spring element made of elastic material integral with the body, the loose end of the spring element being placed between the walls of the box-shaped body, so that it can be moved. In the assembled hinge, the loose end of the spring element is in contact with the curved working surface of the second link and slides along it with the movement of the bow. The bow accepts the open and folded fixed states when the bend at the loose end of the spring element coincides with one of the two recesses on the working surface of the second link. When bringing the bow from the folded fixed state to the open fixed state and vice versa, the bend at the end of the unfastened spring element leaves one recess on the working surface of the second link and, overcoming the protrusion between the recesses, slides over it until it is fixed in the second recess . When the bow is brought into an open spring-loaded state, the bend at the loose end of the spring element slides along the working surface of the second link, while the spring element itself bends towards the arch, providing elasticity to the hinge (3).

 The disadvantages of this design of the spring hinge include the difficulty in manufacturing the box link with the spring element, the inability to make the hinge in the form of a decorative element, additionally decorating the frame, the inability to use it in glasses with a metal frame.

 The invention is aimed at eliminating the aforementioned disadvantages of the known, and the following technical result can be obtained from its use: simplification of the design of the link providing spring joint properties, the ability to manufacture elastic links in the form of decorative elements of various configurations, the possibility of using the joint in frames, both with plastic and with a metal frame.

 The specified technical result is achieved in that the springing properties of the hinge are provided by one of its links, made in the form of a curved plate of elastic spring material, with one end of the elastic link having a mounting pad and the other end made in the form of a hinge loop. In contrast to the known hinge (3), the springing properties of which are ensured by an elastic element with a loose end located between the walls of the box-shaped housing of one of the links, the springy properties in the proposed hinge are provided by elastic deformation (straightening) of the bends of the elastic link itself. In this case, one end of the elastic link is rigidly fixed to the bow, and the loop at the other end is assembled in a hinge with the loop of the second link by means of a connecting element. The elastic link in the proposed hinge can be performed with various bending configurations, which, in turn, makes it possible for various design and decorative solutions. The proposed hinge with an elastic link can be used to connect the arches in the frames, both with metal and plastic frames, using various designs of the second link.

 Figure 1 is a General view of a spring hinge with an elastic link from a plate in a frame with a metal frame.

 Figure 2 - spring hinge in the folded fixed state.

 Figure 3 - spring hinge in the open fixed state.

 Figure 4 - spring hinge in the open spring-loaded state.

 Figure 5 is a General view of a spring hinge with an elastic link from a plate in a frame with a plastic frame.

 The hinge for spectacle frames consists of an elastic link 1 and a link 2, assembled together by a connecting element 3. One end of the elastic link 1 has an hinge loop 4, at the other end, for the rigid fastening of the link 1 to the movable part 5 of the handle, the platform 6 is made. Link 2 has a hinge loop 10 with a protrusion 11, in addition, in frames with a metal frame 7 (Fig. 1), for rigid attachment to the fixed part 9 of the handle, a flat base 8. For fixing in frames with a plastic frame 12 (Fig. 5), on the link 2, a curly shank 14 is made, and d I stop the moving part 5 bow - ledge 13.

 The device operates as follows.

 Link 2 is rigidly fixed with a flat base 8 on the fixed part 9 of the handle (Fig. 1), or with a curly shank 14 in a plastic frame 12 (Fig. 5). The elastic link 1, platform 6, is rigidly fixed on the movable part 5 of the arm, and the loops 4 and 10, links 1 and 2, respectively, are assembled into a hinge by means of a connecting element 3. In the folded fixed state (Fig. 2), the movable part of the arm 5, adjacent to the outer surface of the hinge loop 10. When opening the bow, the movable part 5, overcoming the spring action of the link 1, bumps on the protrusion 11 until then, until it moves to the open fixed state (figure 3). The movable part 5 of the arc, the spring action of the elastic link 1, is automatically set to one of two fixed states, depending on which side of the protrusion 11 it is. For the convenience of putting on glasses, the arms are brought into an open spring-loaded state (Fig. 4), moving movable parts 5 outward, which with their ends abut against the ends of the stationary parts 9, in frames with a metal frame (Fig. 1), or in ledges 13 on links 2, in frames with a plastic frame (figure 5). In this case, the elastic link 1 undergoes elastic deformation (straightens) in places of bends, and after putting on the glasses, tightly compresses the moving parts of the 5 arms to the temporal areas of the head, preventing the glasses from slipping off. The stiffness of the elastic link 1 is selected so that when wearing glasses eliminated excessive pressure on the person’s head, and elastic plates are used for its manufacture (FIGS. 1, 2). The ability to perform elastic link 1 with various bending options provides a variety of decorative design solutions.

 The minimum number of parts, the simplicity and manufacturability of their manufacture, the possibility of using them in frames, both with metal and plastic frames, provide the hinge with versatility, reliable operation and allow the proposed hinge to be widely used in the frames of sunglasses, corrective and special glasses.

Sources of information
1. Copyright certificate of the USSR 1788501, cl. G 02 C 5/16, 10/10/1990

 2. Patent EP 0340161, cl. G 02 C 5/22, 02/11/1989 - the prototype.

 3. French patent 2703477 A1, G 02 C 5/22, 03/30/1993, the prototype.

Claims (1)

 A hinge for spectacle frames connecting the frame of the frame with the handle and consisting of two links and a connecting element, characterized in that one of the links of the hinge is made in the form of a curved plate of elastic material, one end of which is rigidly attached to the handle, and the other end is made in the form hinge loop.

Images