Fitness barbell

A fitness barbell comprising a holding rod and a gravity body, wherein the gravity body is a ring-shaped gravity fitness ring, a handle arranged in the diameter direction of the ring-shaped gravity fitness ring is positioned in the ring-shaped gravity fitness ring, the holding rod is fastened detachably with the ring-shaped gravity fitness ring through a connecting mechanism composed of a fixing seat and a fastening lock, and the ring-shaped gravity fitness ring is limited between the fixing seat and a lock body of the fastening lock through a lock tongue of the fastening lock,

• wherein the fixing seat is in the shape of a stepped cylinder, the low step cylinder of the fixing seat is provided with a groove in the diameter direction and sleeved by the ring-shaped gravity fitness ring, and the gravity fitness ring handle is clamped in the groove;
• a lock hole lug is arranged on the outer end surface of the fixing seat, a lock hole lug counter bore is formed on the lower end surface of the lock hole lug, the lock body is provided with a lock body inner end surface counter bore for accommodating the lock hole lug, and a through hole matched in dimensions with the lock hole lug counter bore is formed on the lower wall of the lock body inner end surface counter bore;
• the lock tongue is arranged in a lock body outer end surface counter bore, the inner end surface of the lock tongue is closely attached to the bottom surface of the lock body outer end surface counter bore and capable of sliding up and down in the lock body outer end surface counter bore, and lock tongue return springs are arranged between the lower end surface of the lock tongue and the lower wall surface of the lock body outer end surface counter bore;
• a lock tongue return spring pushes the lock tongue to move up to enable the upper end of the lock tongue to penetrate the through hole to be inserted into the lock hole lug counter bore, so the fixing seat is locked with the lock body;
• and when the gravity body is required to be detached, a downward force is applied to the lock tongue to compress the lock tongue return spring and separate the upper end of the lock tongue from the lock hole lug counter bore, so the fixing seat is separated from the lock body.