| 主权项 |
1. Coupling device for connecting and/or closing off fluid lines, comprising:
a male coupling element (2) having a substantially circular cross section, at least one continuous recess (5) provided around the outer circumference and at least one projection (6) which extends substantially radially; a female coupling element (3) which has a wall (7) with a substantially circular cross section which surrounds a receiving space (8) in which the male coupling element (2) can be accommodated in a fitted manner, wherein the female coupling element (3) has at least one arm (9) which, at one end, comprises an operating element (10) and, at an opposite end, at least one radially extending locking element (11), wherein the arm (9) is rotatably connected to the female coupling element (3), wherein the wall (7) has at least one recess (100) through which the locking element (11) can extend into the receiving space (8), wherein the arm (9) can be brought into a first and a second position, wherein, in the first position, the locking element (11) is situated substantially outside the receiving space (8) and the male coupling element (2) can be brought freely into and/or out of the receiving space (8), wherein, in the second position, the locking element (11) extends substantially inside the receiving space (8) and engages with the at least one continuous recess (5) provided around the outer circumference of the male coupling element (2), as a result of which a connection between the coupling elements (2, 3) is established in the position in which the coupling elements (2, 3) are accommodated entirely inside one another, wherein the wall (7) of the female coupling element (3) comprises at least a labyrinth-like guide (12), wherein the labyrinth-like guide (12) comprises at least one entrance (14) which opens in a free peripheral edge (15) of the wall (7), at least one guide part (16) which extends substantially in the axial direction from the entrance (14) and at least one guide part (17) which adjoins the axial guide part (16) and extends substantially in the circumferential direction, wherein the radial projection (6), via the entrance (14) in the axial guide part (16) and the guide part (17) extending in the circumferential direction, can be positioned in the labyrinth-like guide (12) in order to establish the bayonet fastening, wherein the guide part (17) which extends substantially in the circumferential direction is locally widened (18, 20) in the axial direction to form at least one stop (19, 80), wherein the male and female coupling elements accommodated inside one another can be brought into a position in which the radial projection (6) and the at least one stop (19, 80) overlap one another in such a manner that a movement of the male coupling element (2) substantially in the circumferential direction is limited and that it is possible to prevent an uncontrolled force directed in the axial and/or circumferential direction from taking the radial projection (6) past the at least one stop (19), wherein the receiving space (8) further comprises a seat (50) that is arranged in a direction transverse to the wall (7) and opposite the free circumferential edge (15), wherein in axial direction the wall (7) comprises a first (101) and a second (102) part that are connected in circumferential direction via a connection element (22), wherein a first end (103) of the first part (101) is connected to a first side (104) of the seat (50) that is arranged facing towards the receiving space (8) and a second end (105) of the first part (101) is connected to a first end (106) of the connection element (22) that is arranged facing the seat (50), wherein the first part (101) comprises the at least one recess (100), wherein a first side (107) of the first part (101) that is arranged facing the receiving space (8) comprises a slot (108) that extends from the seat (50) substantially in axial direction and is connected to the at least one recess (100) and/or to the connection element (22). |
