A clamping device and a clamping system using the same are disclosed herein. The clamping device includes a first clamp component formed from bent wire configured to partially circumscribe a pole, and including at least one offset portion for defining an accessory receiving space between the first clamp component and a sidewall of the pole; a second clamp component rotatably coupled to the first clamp component, formed from bent wire, and configured to partially circumscribe the pole; and a handle component configured to couple the second clamp component to the first clamp component. When the handle component is rotated in a first tightening direction, the first clamp component and the second clamp component are brought into secure engagement about the circumference of the pole. When the handle component is rotated in a second loosening direction, the clamping device is capable of being disengaged from the pole.

A clamping device for securing an accessory to a pole is disclosed herein. The clamping device includes a first clamp component formed from bent wire, the first clamp component configured to partially circumscribe a pole, and including at least one offset portion for defining an accessory receiving space between the first clamp component and a sidewall of the pole; a second clamp component rotatably coupled to the first clamp component, formed from bent wire, and configured to partially circumscribe the pole; and a handle component configured to couple the second clamp component to the first clamp component. When the handle component is rotated in a first tightening direction, the first clamp component and the second clamp component are brought into secure engagement about the circumference of the pole. When the handle component is rotated in a second loosening direction, the clamping device is capable of being disengaged from the pole.

The pinching operation is facilitated. A hose clamp (H1) is formed by bending a strip-like plate material (1) into a ring-like configuration, and includes a first end portion (5) having a first pinching operation surface (9), and a second end portion (6) having a second pinching operation surface (15). A through-hole (7) is open near the center in the longitudinal direction of the first pinching operation surface (9). At the time of bending into ring-like configuration, expansion regions (19) arranged at both side portions in the width direction of the second pinching operation surface (15) are folded at folding edges (20) with respect to a proximal region (18), whereby the second pinching operation surface (15) is narrowed in the width direction and can enter the through-hole (7). After bending into ring-like configuration, the expansion regions (19) are unfolded at the folding edges (20) and regain a widened state.