Patent ID: 8123710

Claim:
A limiting connector for knee brace comprising: a first arm having a bar protruding from the first arm; a first pivoting element mounted around the bar of the first arm and having a sliding groove shaped as an arc and formed through the first pivoting element and along a sliding circle having a sliding center; a spring mounted on the bar; and a second arm connected pivotally to the first arm and having a second pivoting element shaped annularly and mounted parallelly on the first pivoting element and around the bar; an angle adjusting assembly mounted between the first arm and the second arm and having a positioning gear shaped annularly, and mounted on the second pivoting element, and when mounted thereby abutting the spring, and further having an outer edge; an inner edge; multiple positioning teeth formed in the outer edge of the positioning gear, and when the positioning gear is mounted, the multiple positioning teeth are adjacent to the sliding groove; a pressing element formed on the inner edge of the positioning gear and having a pressing protrusion protruding perpendicularly from the inner edge of the positioning gear; a gear cap shaped annularly and mounted on the positioning gear around the pressing protrusion and having an inner edge; a fixing shaft protruding perpendicularly from the inner edge of the gear cap, and extending through the positioning gear and second pivoting element, and mounted on the first pivoting element; a sliding recess shaped as an arc and formed through the gear cap along a cap circle having a cap center aligning with the sliding center of the sliding circle; and a first button mounted between the first pivoting element and the gear cap and having a first pin mounted through the first button and having two ends respectively slidably extending into the sliding groove of the first pivoting element and the sliding recess of the gear cap; a first engaging teeth protruding from the first button and engaged to the positioning teeth of the positioning gear; and a second button mounted between the first pivoting element and the gear cap, and having a second pin mounted through the second button and having two ends respectively slidably extending into the sliding groove of the first pivoting element and the sliding recess of the gear cap; a second engaging teeth protruding from the second button and engaged to the positioning teeth of the positioning gear; a rotating cap having an inner surface; a rotating shaft protruding from the inner surface of the rotating cap, and mounted through the gear cap, the positioning gear and the second pivoting element, and rotatably mounted on the first pivoting element; a pushing element protruding from the inner surface of the rotating cap around the rotating shaft, and having a containing recess formed in the pushing element and corresponding to and abutting the pressing protrusion of the positioning gear.