The connection device (1) comprises a coupling connector (5) in the form of an open ring (5a) with a closure finger (5b), which is rendered permanently integral, by means of an articulated connection or by means of a rigid connection, with a connection apparatus (4) which can ensure the selective connection to a rope (3). The manipulation of the connection device is thus facilitated, and the risks of incorrect relative positioning of the coupling connector (5) and the connection apparatus (4) are avoided.

A split type hanging buckle includes a base and a connecting element, the base includes a top cover and a bottom cover, the top cover has a receiving groove, one end of the bottom cover has an accommodating groove, the accommodating groove corresponds to the receiving groove, the connecting element includes a first magnetic element, a second magnetic element, a connecting part and a fitting part, the first magnetic element is received in the accommodating groove, one end of the connecting part has an inserting part and a clamping part, one end of the inserting part has an receiving cavity, the second magnetic element is received in the receiving cavity, and after the second magnetic element is received in the receiving cavity, portions of the second magnetic element away from the inserting part attract the first magnet element, such that the connecting element is connected with the base.

A belt includes an inside belt surface, a belt coating layer provided on the inside belt surface and a plurality of belt teeth in the belt coating layer. A belt adjustment system and a belt fabrication method are also disclosed.

A belt includes an inside belt surface, a belt coating layer provided on the inside belt surface and a plurality of belt teeth in the belt coating layer. A belt adjustment system and a belt fabrication method are also disclosed.