A clamp device for an elastic band, said clamp device comprising: a coupling part having a first pivot section and a second pivot section coupled pivotally to each other; a first clamp mounting part extending from said first pivot section; a second clamp mounting part extending from said second pivot section; a first clamp component having a connecting arm portion mounted on an inner side of said first clamp mounting part, said first clamp component having a clamping arm portion connected to said connecting arm portion, said clamping arm portion cooperating with said connecting arm portion to define a clearance therebetween and being resiliently deformable relative to said connecting arm portion, said clamping arm portion defining a first clamping side, wherein said first clamp component is one of generally U-shaped and generally H-shaped; a second clamp component having a connecting arm portion mounted on an inner side of said second clamp mounting part, said second clamp component having a second clamping side disposed to confront said first clamping side of said first clamp component; and wherein said first and second clamp components (2a, 2b) are coupled together in a manner that permits relative movement of said first and second clamp components (2a, 2b) between a non-clamping state and a clamping state, wherein, in the non-clamping state, said first and second clamping sides (221a, 221b) of said first and second clamp components (2a, 2b) are disposed to permit movement of the elastic band therebetween, wherein, in the clamping state, said first and second clamping sides (221a, 221b) of said first and second clamp components (2a, 2b) are disposed close to each other to result in deformation of said clamping arm portion of said first clamp component to contract said clearance and to enable said first and second clamping sides (221a, 221b) of said first and second clamp components (2a, 2b) to clamp cooperatively and tightly a portion of the elastic band therebetween. a coupling part having a first pivot section and a second pivot section coupled pivotally to each other; a first clamp mounting part extending from said first pivot section; a second clamp mounting part extending from said second pivot section; a first clamp component having a connecting arm portion mounted on an inner side of said first clamp mounting part, said first clamp component having a clamping arm portion connected to said connecting arm portion, said clamping arm portion cooperating with said connecting arm portion to define a clearance therebetween and being resiliently deformable relative to said connecting arm portion, said clamping arm portion defining a first clamping side, wherein said first clamp component is one of generally U-shaped and generally H-shaped; a second clamp component having a connecting arm portion mounted on an inner side of said second clamp mounting part, said second clamp component having a second clamping side disposed to confront said first clamping side of said first clamp component; and wherein said first and second clamp components (2a, 2b) are coupled together in a manner that permits relative movement of said first and second clamp components (2a, 2b) between a non-clamping state and a clamping state, wherein, in the non-clamping state, said first and second clamping sides (221a, 221b) of said first and second clamp components (2a, 2b) are disposed to permit movement of the elastic band therebetween, wherein, in the clamping state, said first and second clamping sides (221a, 221b) of said first and second clamp components (2a, 2b) are disposed close to each other to result in deformation of said clamping arm portion of said first clamp component to contract said clearance and to enable said first and second clamping sides (221a, 221b) of said first and second clamp components (2a, 2b) to clamp cooperatively and tightly a portion of the elastic band therebetween.