Earpiece-less Eyeglass Apparatus and Strap Attachment Mechanism

摘要

An earpiece-less eyeglass apparatus and retainer-strap attachment mechanism. First and second attachment mechanisms are mounted on each side of a lenticular frame. Each attachment mechanism includes a stemball assembly, a socket housing, and a spring. The stemball assembly includes a shaft, a narrow neck, and a ball. The socket housing includes a primary socket, a secondary socket, and a narrow slot joining the primary and secondary sockets. The spring is mounted within the primary socket and the slot, and is shaped to form a rounded portion within the primary socket and a narrow restriction portion within the slot for receiving, respectively, the ball and the neck of the stemball assembly. The narrow restriction portion locks the ball into the secondary socket without placing stress on the housing when the neck of the stemball assembly is slid through the slot, moving the ball into the secondary socket.

主权项

1. An earpiece-less eyeglass apparatus, comprising:
a lenticular frame for holding at least one eyeglass lens; and first and second attachment mechanisms on each side of the lenticular frame for removably attaching a retainer strap directly to the frame, each of the first and second attachment mechanisms comprising:
an elongate stemball assembly having a shaft portion, a ball, and a neck portion joining the shaft and the ball, wherein the shaft portion is configured to connect to an end of the retainer strap, and the ball has a diameter greater than the neck portion;a socket housing having formed therein, a primary hollow socket, a secondary hollow socket, and a narrow slot joining the primary and secondary sockets, wherein a front end of the socket housing is mounted to the lenticular frame; andan elastic flat metal strip mounted within the primary and secondary hollow sockets and underlying the slot, the strip being shaped to form a rounded portion within the primary socket, a narrow restriction portion underlying the slot, and a diverging portion within the secondary socket;wherein the rounded portion of the elastic flat metal strip is sized to receive the ball of the stemball assembly, and the narrow restriction portion locks the ball into the secondary socket without placing stress on the housing when the ball of the stemball assembly is pressed through the narrow restriction portion into the diverging portion of the strip.