Device for connecting building boards, especially floor panels

A device in combination with building boards for connecting and locking the building boards comprising a top side and a bottom side, having a core made of wood material and provided with a groove on at least two opposite side edges, comprising an insert intended for locking purposes, which insert can be inserted into the groove of one of the side edges, the boards being connected by substantially horizontal displacement one toward the other, wherein the insert is provided with one resilient lip extending upward from a first side edge directed toward the top side of the insert, and another resilient lip extending downward from a second side edge directed toward the bottom side of the insert, and

• wherein at least one of the one resilient lip and the another resilient lip compresses toward a center of the insert and then springs back out from the center of the insert when the boards are connected by the substantially horizontal displacement,
• the insert comprises:
• a first upward facing surface;
• a second upward facing surface connected to, and vertically offset from, the first upward facing surface by a first step;
• a first downward facing surface;
• a second downward facing surface connected to, and vertically offset from, the first downward facing surface by a second step;
• the first side edge comprises the second upward facing surface and the first downward facing surface;
• the second side edge comprises the first upward facing surface and the second downward facing surface;
• the one resilient lip extends upward from the second upward facing surface;
• and
• the another resilient lip extends downward from the second downward facing surface, wherein when the boards are mutually connected:
• an upper surface of the top side of the insert contacts a lip or tongue of a first one of the boards, and
• the upper surface of the top side of the insert and the lip or tongue of the first one of the boards are disposed within the groove of a second one of the boards.

A device for connecting and locking first and second building boards, the first and second building boards comprising respective grooves into which the device is configured to be inserted for the connecting and locking, the first and second building boards being connected by substantially horizontal displacement one toward the other, the device comprising:

• a first upward facing surface;
• a second upward facing surface connected to, and vertically offset from, the first upward facing surface by a first step comprising a first vertical wall extending from the first upward facing surface to the second upward facing surface;
• a first downward facing surface;
• a second downward facing surface connected to, and vertically offset from, the first downward facing surface by a second step comprising a second vertical wall extending from the first downward facing surface to the second downward facing surface;
• a resilient lip extending upward from the second upward facing surface;
• and
• another resilient lip extending downward from the second downward facing surface,
• wherein at least one of the resilient lip and the another resilient lip compresses toward a center of the device and then springs back out from the center of the device when the boards are connected by the substantially horizontal displacement;
• and
• horizontal locking of the boards is effectuated by respective tips of the resilient lip and the another resilient lip resting against respective edges of the respective grooves.

A device for connecting and locking building boards comprising a top side and a bottom side, having a core made of wood material and provided with a groove on at least two opposite side edges, comprising an insert intended for locking purposes, which insert can be inserted into the groove of one of the side edges, the board being connected by substantially horizontal displacement one toward the other, wherein the insert is provided with one resilient lip extending upward from a first side edge directed toward the top side of the insert, and another resilient lip extending downward from a second side edge directed toward the bottom side of the insert, and wherein at least one of the one resilient lip and the another resilient lip compresses toward a center of the insert and then springs back out from the center of the insert when the boards are connected by the substantially horizontal displacement, the insert comprises:

• a first upward facing surface;
• a second upward facing surface connected to, and vertically offset from, the first upward facing surface by a first step;
• a first downward facing surface;
• a second downward facing surface connected to, and vertically offset from, the first downward facing surface by a second step;
• the first side edge comprises the second upward facing surface and the first downward facing surface;
• the second side edge comprises the first upward facing surface and the second downward facing surface;
• the one resilient lip extends upward from the second upward facing surface, and the another resilient lip extends downward from the second downward facing surface, and wherein when the boards are mutually connected an upper surface of the top side of the insert contacts a lip or tongue of a first one of the boards, and the upper surface of the top side of the insert and the lip or tongue of the first one of the boards are disposed within in the groove of a second one of the boards;
• and wherein:
• the first step comprises a first straight wall extending from the first upward facing surface to the second upward facing surface;
• and
• the second step comprises a second straight wall extending from the first downward facing surface to the second downward facing surface.