| 摘要 |
An air passage device for installation into a mounting opening in a wall of a housing for components generating waste heat, such as a switching box, has a base housing with a fan support for a fan and a design cover with a fan grid having sheet elements. At least one swivellable sheet element or at least one flexible, tongue-shaped side wall section, separated from the remaining side wall surface of the side walls of the design cover by slits running transversely to the longitudinal direction of the side wall, is formed in the region of the upper side wall of the design cover facing away from the swivel axis for swivelling the design cover. The sheet element and the tongue-shaped side wall section are constructed as a detachable and lockable detent connection, able to be actuated by a finger, between the design cover and the base housing. |
| 主权项 |
1. An air passage device,
wherein the air passage device comprises a base housing having a frame comprising side walls, one of said side walls being an upper side wall of the base housing, wherein the air passage device further comprises a design cover having a frame comprising side walls, one of said side walls being an upper side wall of the design cover, wherein a filter mat is disposed inside the design cover, wherein in the upper side wall of the design cover at least one side wall section is formed by slits running transversely to a longitudinal direction of the upper side wall, wherein the side wall section has a detent cam, wherein a lower side of the upper side wall of the base housing has at least one holding element, said holding element being a recess, opening or depression, wherein the holding element is capable of being brought into operative connection with the detent cam on the side wall section so that a locking arrangement between the design cover and the base housing can be established wherein the slits forming the at least one side wall section have a length that is smaller than a width of the side wall, and wherein the design cover is engaged with its side walls with the base housing so that the design cover is swivellably arranged on the base housing about a horizontal or vertical swivel axis. |
