Patent EP-0338082-A1 (EP)
Inventor: KATO HIROYA
IPC: A44B1/08
Filed: 1988-09-21
Abstract: A locking device according to the present invention consists of a fastening member A and a receiving member B. Owing to the resilient force of a resilient member provided in the receiving member B, the fastening member A can be held reliably on the receiving member B, and the removing of the locking member A from the receiving member B can also be done easily. An end portion of the fastening member A is formed in the shape of the letter "T", in which a rod (2) extending perpendicularly to left and right with respect to a support post (1) is fixed to an end of the support post (1). A vertically acting resilient member (4) is provided in the interior of a chamber (3) in the receiving member B, and an elongated bore (6) in the portion of an upper wall (5) of the chamber (3) which is above the resilient member (4), a groove (7) being provided in the lower surface of the upper wall (5) of the chamber (3) so as to extend across the elongated bore (6). The elongated bore (6) and groove (7) in the receiving member B are all formed in such shapes that permit the rod (2) in the fastening member A to be held therein. Accordingly, when the rod in the fastening member is inserted into the elongated bore in the receiving member B and turned in the interior of the chamber in the receiving member B up to the position of the groove, the rod of the fastening member A fits in the groove in the receiving member B for secure locking owing to the resilient force of the resilient member. If the fastening member A is provided on either a decorative member (10) of a personal ornament, such as a brooch, a necklace, an earring and a button, or a mounting member (11) for a decorative element with the receiving member B provided on the other, a personal ornament having an interchangeable decorative member (10) can be provided.   
     ABSTRACT 
     The locking device of the invention comprises a fastening member A and a receiving member B. The spring force of a resilient member installed in the receiving member B enables the fastening member A to be reliably held in the receiving member B, and removal thereof is also easy. The end portion of the fastening member A is formed in the shape of the letter "T", in which a rod (2) extending perpendicularly to left and right with respect to a support post (1) is fixed to an end of the support post (1). A vertically acting resilient member (4) is installed in the chamber (3) of the receiving member B, and the upper wall (5) of the chamber (3) is formed with an elongated opening (6) disposed above the resilient member (4), while the inner surface of the upper wall (5) of the chamber (3) is formed with a groove-like recess (7) extending transversely of the elongated opening (6). The elongated opening (6) and groove-like recess (7) of the receiving member B are shaped to house the rod (2) of the fastening member A therein; therefore, by inserting the rod (2) of the fastening member A into the elongated opening (6) in the receiving member B and rotating it in the chamber (3) of the receiving member B up to the position of the groove-like recess (7), it is possible to fit the rod of the fastening member A in the groove-like recess of the receiving member B by the repulsive force of the resilient member (4). 
     The fastening member A is installed either on a decorative member (10) for a personal ornament, such as a brooch, necklace, earring, button or the like, or on an attaching member (11) for an article ot be ornamented, while the receiving member B is   installed on the other; thus, a personal ornament which enables the decorative member (10) to be exchanged is provided.