| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastener to be used when stretching a net on a screen door frame, specifically a hard fastener to hold a net along the groove for stretching the net, allowing an inexperienced user to easily fit the fastener and stretch the net, and also to easily remove the fastener when replacing the net.SOLUTION: A fastener 1 is made of rubber-based and other materials of high elasticity and flexibility, and is thus easy to fit ino a groove 7 for stretching a net. The fastener 1 is of a cylindrical form with a double-layer structure made of plastic-based and other hard materials between the void in the center and the flexible surface, and is made hard to thereby be easy to insert into the groove 7 for stretching a net. The materials may be a combination of rubber- and plastic-based materials, rubber-based materials only, plastic-based materials only, or any other materials that similarly constitute a double-layer structure of soft and hard parts. The fastener 1 is of a cylindrical form, and therefore can be removed easily by inserting a removal jig into the void at an end of the fastener 1 and hooking for taking it out. |
