Local connection device with controlled separation comprising a multidirectional bonding layer

Connection device (20) designed to connect a first element (18) and a second element (16) and to separate the first and second elements from each other on command, the device comprising:

• a first base plate (24) that can be used to fasten the connection device (20) onto a surface of the first element (18),
• a first connection wall (22) forming a protuberance from the first base plate (24) and having an internal surface (22A) delimiting an internal volume (V) located on the side of the first base plate (24) on a first side, and a first connection surface (22B) located on a second side opposite the first side,
• a second base plate (28) that can be used to fasten the connection device (20) onto a surface of the second element (16),
• a second connection wall (26) fixed to the second base plate (28) and having a second connection surface (26A) covering the first connection wall (22) so as to form a space (S) between the first and second connection surfaces (22B, 26A),
• a bonding layer (30) composed of a layer of adhesive material or a weld, formed in said space (S) in contact with each of the first and second connection surfaces (22B, 26A), such that the shape of the bonding layer (30) is such that, when viewed in a section in any plane locally orthogonal to the first base plate (24), the bonding layer (30) extends along at least two distinct directions, and
• a heat-generating material (32) arranged in the internal volume (V) so as to heat the bonding layer (30) by thermal conduction through the first connection wall (22).