초록 ▼

A very safe buckle, formed of plastic, is provided which enables a strap to be inserted and clamped easily and quickly, and which prevents the strap from being inadvertently loosened or pulled free of the buckle no matter how the strap or the buckle is pulled about. The buckle is comprised of two ad

A very safe buckle, formed of plastic, is provided which enables a strap to be inserted and clamped easily and quickly, and which prevents the strap from being inadvertently loosened or pulled free of the buckle no matter how the strap or the buckle is pulled about. The buckle is comprised of two adjacent bars spanning the space between the sides of the buckle. The strap is passed between the two bars. One of the bars is rotatable and has a polygonal cross-section, the arrangement being such that the rotation of the rotatable bar reduces the size of the gap between the rotatable bar and the other bar, which is fixed, thereby clamping the strap securely between the bars.

대표청구항 ▼

A plastic buckle comprising: (a) a stationary bar and a rotatable bar provided adjacent to each other across a space between two opposed side members for fixing a strap inserted between said stationary bar and said rotatable bar; (b) said stationary bar being fixed to said two opposed side members a

A plastic buckle comprising: (a) a stationary bar and a rotatable bar provided adjacent to each other across a space between two opposed side members for fixing a strap inserted between said stationary bar and said rotatable bar; (b) said stationary bar being fixed to said two opposed side members and having an abutment portion formed on an inner surface thereof facing said rotatable bar; (c) said rotatable bar: (i) having a peripheral surface which, in use, is surrounded once by said strap; (ii) having a non-circular cross-section, (iii) being rotatably supported on said two opposed side members, and (iv) having two acute angle portions formed on edges of opposite sides thereof; and (d) one of said two acute angle portions being brought into abutment against said abutment portion of said stationary bar when a tension force is exerted on said strap to rotate said rotatable bar, thereby clamping said strap between said one acute angle portion and said abutment portion.