Abstract: A method of forming set pin hole of an insulated carbine hook includes: providing a core material with a perforation and a recess; putting the core material in a mold cavity of a mold including a movable pin protruding from an inner surface of the mold cavity, which is at an opening of the perforation; filling insulated material between an outer surface of the core material and the inner surface, and in the perforation and recess; forming an insulated layer on the outer surface and in the perforation and recess to obtain an insulated intermediate having a notch at the opening; aiming a removal tool at the notch; removing the insulated material at the other opening of and in the perforation, and at an opening of and in the recess to form the set pin hole, which makes the manufacturing a main body of the insulated carbine hook easy.

Abstract: An insulating carabiner hook is characterized in that a free end of an insulating gate includes a first insulating section and a second insulating section. A color of the second insulating section is different from a color of the first insulating section. A restricting sleeve could move along an axial direction of the insulating gate. When the free end abuts against an abutting portion of an insulating body, and the restricting sleeve completely covers the second insulating section, the restricting sleeve is located at a safe position and cannot freely pivot. When at least a part of the second insulating section is exposed via the restricting sleeve, the restricting sleeve is located at a warning position. An insulating gate and a manufacturing method thereof are also disclosed.

Abstract: A method of forming set pin hole of an insulated carbine hook includes: providing a core material with a perforation and a recess; putting the core material in a mold cavity of a mold including a movable pin protruding from an inner surface of the mold cavity, which is at an opening of the perforation; filling insulated material between an outer surface of the core material and the inner surface, and in the perforation and recess; forming an insulated layer on the outer surface and in the perforation and recess to obtain an insulated intermediate having a notch at the opening; aiming a removal tool at the notch; removing the insulated material at the other opening of and in the perforation, and at an opening of and in the recess to form the set pin hole, which makes the manufacturing a main body of the insulated carbine hook easy.

Abstract: An insulating carabiner hook is characterized in that a free end of an insulating gate includes a first insulating section and a second insulating section. A color of the second insulating section is different from a color of the first insulating section. A restricting sleeve could move along an axial direction of the insulating gate. When the free end abuts against an abutting portion of an insulating body, and the restricting sleeve completely covers the second insulating section, the restricting sleeve is located at a safe position and cannot freely pivot. When at least a part of the second insulating section is exposed via the restricting sleeve, the restricting sleeve is located at a warning position. An insulating gate and a manufacturing method thereof are also disclosed.