| 摘要 |
In a connection surface ( 3 c) of each of two members ( 1 a, 1 b) to be fastened, a communication groove ( 6 ) opened on a surface and an engagement groove ( 7 ) communicating therewith, being wider than the communication groove ( 6 ), and provided with a connection surface ( 9 ) parallel to the connection surface ( 3 c) are formed. A fastener ( 8 ) includes: two engaging pieces ( 11 ), which can be inserted into the engagement grooves ( 7 ) and are wider than the communication grooves ( 6 ) and are provided with fastening surfaces ( 15 ); and a connecting portion ( 14 ) therebetween, wherein the entirety of the fastener ( 8 ) can be inserted into the interior of one set of communication groove ( 6 ) and engagement groove ( 7 ), which are opposed to and communicate with each other, by thrusting the respective engaging pieces ( 11 ) and connecting portion ( 14 ) thereto. In the inserted state, fastening surfaces ( 15 ) of the respective engaging pieces ( 11 ) contact with engagement surfaces ( 9 ) of the engagement grooves ( 7 ), thereby being unable to be pulled out in a direction orthogonal to the connection surfaces ( 3 c) of the two members ( 1 a, 1 b). That is, the two members ( 1 a, 1 b) have nothing protruding from a surface by virtue of the fastening assembly, and are in a firmly fastened state via the fastener ( 8 ).
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