Re-enterable enclosure

摘要

An enclosure (20, 220) includes a housing (22, 222) and a sealing unit (48, 42a, 232) that mounts within a sealing unit opening (28, 230) of the housing. The sealing unit (48, 42a, 232) provides a peripheral seal between the housing (22, 222) and the sealing unit (48, 42a, 232) and provides seals around cable ports (50). The sealing unit (48, 42a, 232) can be mounted to and removed from the housing (222) through the sealing unit opening (28, 230). The base (26) lacks a permanent retention structure (55, 155a) at the outer end of the base (26) for retaining the sealing unit (48, 42a, 232) in the base (26). A cover (24) is removable from the base (26) without requiring the sealant arrangement (52, 236) to be de-pressurized. A fastening arrangement (55, 155a) releasably retains the sealing unit (48, 42a, 232) in the sealing unit opening (28, 230).

主权项

1. An enclosure comprising:
a housing defining a sealing unit opening having an outer end; a sealing unit that mounts within the sealing unit opening, the sealing unit including:
inner and outer pressurization structures separated along an actuation axis;a sealant arrangement positioned axially between the inner and outer pressurization structures of the sealing unit, the sealant arrangement defining a plurality of cable ports, the sealant arrangement also being configured for providing a peripheral seal between the housing and the sealing unit;an actuator for pressurizing the sealant arrangement axially between the inner and outer pressurization structures of the sealing unit within the sealing unit opening, the actuator including:
a shaft extending in an axial direction; anda spring for applying an axial seal pressurization force between the inner and outer pressurization structures to spring bias the inner and outer pressurization structures axially toward one another;the sealant arrangement being pressurized axially between the inner and outer pressurization structures when the actuator is actuated such that an outer portion of the sealant arrangement forms the peripheral seal with an inner surface of the housing that defines the sealing unit opening; the sealing unit being mounted in the sealing unit opening by inserting the sealing unit through the outer end of the sealing unit opening, and the sealing unit being removable from the sealing unit opening through the outer end of the sealing unit opening, wherein when the sealing unit is mounted within the sealing unit opening the actuation axis aligns with a central axis of the sealing unit opening; a cable anchoring location coupled to the inner pressurization structure; and a fastening arrangement that is movable between a retaining position and a non-retaining position, the fastening arrangement being positioned on the housing and configured to engage the inner pressurization structure when in the retaining position, wherein when the fastening arrangement engages the inner pressurization structure the fastening arrangement restricts the sealing unit from moving axially within the sealant unit opening of the housing, and prevents the sealing unit from being removed from the sealing unit opening through the outer end of the sealing unit opening; wherein the fastening arrangement can be moved to the non-retaining position to allow the sealing unit to be removed from the sealing unit opening through the outer end of the sealing unit opening.