A closure device for connecting two parts includes a first connecting module and a second connecting module. The first connecting module can be arranged on the second connecting module in a closing direction, is mechanically latched with the second connecting module by a latching means in a closed position, and is held at the second connecting module against the closing direction. The first connecting module can be released from the second connecting module by movement of the first connecting module in an opening direction. A form-fit element is arranged on one of the connecting modules, which is formed to engage a recess on the other one of the connecting modules after establishing the latching of the first connecting module with the second connecting module by moving the first connecting module relative to the second connecting module against the opening direction.

In another embodiment, a connector assembly comprises a first side collector, comprising a first panel engagement region comprising a first receiving area that has a size to attach onto an edge of a first panel; and a second side collector, comprising a second panel engagement region comprising a second receiving area that has a size to attach onto an edge of a second panel. The first side collector and second side collector can be configured to directly mate with each other to hold panels together.

In another embodiment, a connector assembly comprises a first side collector, comprising a first panel engagement region comprising a first receiving area that has a size to attach onto an edge of a first panel; and a second side collector, comprising a second panel engagement region comprising a second receiving area that has a size to attach onto an edge of a second panel. The first side collector and second side collector can be configured to directly mate with each other to hold to panels together.