Hybrid structure allowing detachably attaching thereto an add-on element

A hybrid structure configured for detachably attaching thereto an add-on element by at least one connector, said hybrid structure comprising:

• a core member having an outer surface and at least one connector receiving element positioned within the core member;
• and
• a covering layer connected to the core member by a connection arrangement other than said connector, and having an internal surface configured to face the core member and an opposite external surface, said covering layer comprising at least one hole extending between its internal surface and external surface, said at least one hole being aligned with said at least one connector receiving element, for providing access thereto for said connector in a first orientation, and said connector receiving element being configured to allow displacement of said connector into a second orientation within the connector receiving element, thereby locking said connector therein.

A core member configured for connecting thereto a covering layer by a connection arrangement, and further configured for detachably attaching thereto an add-on element by at least one connector other than the connection arrangement, said core member comprising:

• an array of locking portions constituting a part of the connection arrangement, said locking portions being configured to lockingly engage at least partially corresponding lockable portions associated with the covering layer;
• and
• at least one connector receiving element other than the locking portions, said at least one connector receiving element being configured to be detachably connected to the add-on element by said connector.

The core member according to claim 62, wherein said structure is reinforced relative to the core member.

The core member according to claim 62, wherein said structure is configured to be assembled with the core member after the core member and the structure have been fabricated.