Ball joint orientation device applicable to unipod
View Patent ↗A ball joint orientation device applicable to a unipod includes a ball joint and stop members, in which one end of the ball joint is formed as a rotating part and is arranged in a ball joint seat in a universal swaying manner, and the other end extends to form a connecting part and is fixedly connected with a main rod; the stop members are arranged in the ball joint seat, and include a locking stop member located at the upper side of the rotating part; an orientation knob is sleeved on the connecting part and/or the main rod; when screwed toward the direction close to the ball joint seat, the ball joint is subjected to orienting locking and no longer rotates; and when screwed toward the direction away from the ball joint seat, and the orienting locking is released, so the ball joint is rotatable freely.
1. A ball joint orientation device applicable to a unipod, comprising
a ball joint;
stop members;
a ball joint seat; and
a main rod;
wherein,
one end of said ball joint is formed as a rotating part and is arranged in said ball joint seat in a universal swaying manner, and the other end extends to form a connecting part and is fixedly connected with said main rod; said stop members are arranged in said ball joint seat, and said stop members comprise a locking stop member located at an upper side of said rotating part;
said stop members further comprise a lower stop member adapted for limiting a position of the ball joint and located at a lower side of said rotating part, an upper surface of the lower stop member abuts against the rotating part;
said device further comprises an orientation knob sleeved around the connecting part and/or said main rod, and said orientation knob can be screwed towards or away from said ball joint seat, so as to move upward or downward;
said orientation knob is able to abut against an end face of said ball joint seat by being screwed towards said ball joint seat, and, said locking stop member locks said ball joint, so as to prevent said ball joint from rotating; and
said orientation knob becomes separated from said ball joint seat by being screwed away from said ball joint seat, so as to release said ball joint and allow the ball joint to rotate freely,
wherein said main rod and said connecting part are fixedly connected together through a main rod joint, one end of said main rod joint is sleeved around said main rod and in threaded connection with one end of said main rod, and the other end of said main rod joint is sleeved around said connecting part and in threaded connection with said connecting part,
said orientation knob is sleeved around said main rod joint, and in threaded connection with said main rod joint or said connecting part,
said lower stop member is a ball joint lower stop ring made of plastic, and the ball joint lower stop ring is fixed in ball joint seat,
said locking stop member is a ball joint upper stop ring made of rubber, and the ball joint upper stop ring is disposed inside said ball joint seat and located at the upper end of said ball joint seat, and the lower surface of said ball joint seat abuts against a spherical surface of said rotating part,
the mutual contact surfaces of each of the ball joint upper and lower stop rings and the rotating part are curved surfaces, wherein the locking stop member is in the form of a flange formed by extension of the end face of the ball joint seat toward the direction of the central axis, an inner diameter of the flange is smaller than a diameter of the rotating part of the ball joint and is larger than a diameter of the connecting part.
2. The ball joint orientation device of claim 1 , wherein,
recesses are respectively formed at both end ports of the inner wall of the orientation knob, and seal rings are respectively disposed in said recesses.