| 摘要 |
<p>A pneumatic articulated joint particularly for pneumatic tool essentially including a support mean (19) provided with an inner duct (44) and a pneumatic actuator (C) for driving operating members (F), includes a bracket (30) having a through housing (13, 304) and a first coupling sleeve (2, 300) provided with channel means (23, 305) connecting in flow communication the free end of the first coupling sleeve (2, 300) with a delivery channel (60) carried out at least in the bracket (30) having a female clutch means (4); an arm (40) having a plate (50) provided with an opening (130, 303) for housing a clamping mean (150) which engages the through housing (13, 304). The plate (50) has an annular housing (21, 301) partially engaged by the first coupling sleeve (2, 300), with the annular housing (21, 301) being in flow connection with a link channel (42) of the arm (40), and the plate (50) includes a male clutch means (5) complementary associated with the female clutch means (4). The actuator (C) is pneumatically connected to the inner duct (44), by means of the feeding duct (41), the link channel (42), the annular housing (21), the channel means (23) and the delivery channel (60); the annular housing (21, 301) and the first coupling sleeve (2, 300) forms a pneumatically sealed rotation guide for the joint. The clutch means, female (4) and male (5), are engaged to lock, in cooperation with the clamping mean (150), the mutual positions of the bracket (30) and of the arm (40); these latter are associated respectively to the actuator (C) and to the support mean (19) or vice-versa. <IMAGE></p> |
