US 11,811,204 B2
Wall installation connection box unit with an extension sleeve
Günther Lehmann, Oberwolfach (DE); Jürgen Schorer, Schiltach (DE); and Thomas Doll, Oberkirch (DE)
Assigned to Hansgrohe SE, Schiltach (DE)
Filed by Hansgrohe SE, Schiltach (DE)
Filed on Mar. 23, 2021, as Appl. No. 17/209,899.
Claims priority of application No. 10 2020 203 797.3 (DE), filed on Mar. 24, 2020.
Prior Publication US 2021/0305793 A1, Sep. 30, 2021
Int. Cl. H02G 3/08 (2006.01); E03B 7/09 (2006.01)
CPC H02G 3/081 (2013.01) [E03B 7/095 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A wall installation connection box unit, comprising:
a box housing body having a rear-side base portion and a sleeve portion projecting forward from the base portion, which sleeve portion peripherally surrounds an installation component mounting space, which space is accessible via an open front end face of the sleeve portion;
an extension sleeve which is configured for coaxial arrangement on the sleeve portion and axial pushing back relative to the sleeve portion; and
a retaining structure which allows axial pushing back of the extension sleeve on the sleeve portion from a mounting position at which the extension sleeve is initially retained on the sleeve portion to an end use position on a variable axial level and retains the extension sleeve in the end use position on the sleeve portion wherein the extension sleeve is moveable from the mounting position to the end use position without rotational movement;
wherein:
the retaining structure includes a retaining ridge structure radially projecting from the sleeve portion, which retaining ridge structure is formed integrally with at least one adjacent axial partial region of the sleeve portion from a sealing resilient material, and a counter-retaining structure cooperating with the retaining ridge structure in at least one of a frictionally engaged manner and a form-locking manner, the counter-retaining structure being provided on the extension sleeve and made of a material which has greater stiffness as compared to the sealing resilient material, or
the wall installation connection box unit comprises a spacer element which is attachable to the box housing body in a securing position in a detachable manner, where the spacer element secures the extension sleeve in the mounting position against axial pushing back.