| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint mechanism which is able to make complicated arm movements with wider arm moving range by making arm movable of raising/descending fore and back, and right and left, and of turning arm on shoulder level. SOLUTION: A joint mechanism 1 is comprised with a first joint member 2 and a second joint member 3. The first joint member 2 is provided with projecting axes 5, 6 on top and bottom, and connection holes are formed on right and left. The second joint member 3 is provided with connector holes 13 to install the first joint member 2 to the connection hole 7 to connection axe 12 revolve freely. The first joint member 2 is held on a body 60 by axes 5, 6. The second joint member 3 is connected to the connector hole 13 on an arm 30 by a connector shaft 39.
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