| 摘要 |
[Problem] To provide a snap fastener with a locking mechanism that has a small number of parts, uses almost no metal, and does not require a key. [Solution] The female part (2) is provided with an operating plate (4) that is installed on the front surface of a first fabric (P1), a spring (5), a base (6), and a support (7) that is installed on the back surface of the first fabric (P1). The male part (3) is provided with an engaging projection (8) that is installed on the front surface of a second fabric (P2) and a support (9) that is installed on the back surface of the second fabric (P2). The operating plate has a partially cut pressing piece (42) and a pressing projection (44) provided on the underside of the pressing piece. The spring has inner arcs (53) extending to the right and to the left which terminate with a small gap (54) between the tips thereof. The gap (54) between the tips of the inner arcs is widened by the downward pressing force of the pressing projection, and is restored to the original shape when the downward pressing force is removed. The base has a space that accommodates the spring.
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