Folding chair
A folding chair comprising: a first structure including a pair of front legs and a backrest, a second structure including a pair of rear legs movable with respect to the first structure between an open position and a closed position, and a seat movable about an articulation axis between a lowered position and a raised position, wherein the seat comprises: a support frame pivoting about said articulation axis between a lowered position and a raised position, a seating element movable with respect to the support frame along a direction transverse with respect to said articulation axis, and at least one transmission mechanism configured to move the seating element along said direction between a first position corresponding to the lowered position of the support frame and a second position corresponding to the raised position of the support frame.
1. A folding chair comprising:
a first structure including a pair of front legs and a backrest;
a second structure including a pair of rear legs articulated with respect to the first structure about an articulation axis and movable with respect to the first structure between an open position and a closed position; and
a seat movable about said articulation axis between a lowered position and a raised position,
wherein said seat comprises:
a support frame pivoting about said articulation axis between a lowered position and a raised position;
a seating element movable with respect to the support frame along a direction transverse with respect to said articulation axis; and
at least one transmission mechanism configured to move the seating element along said direction between a first position corresponding to the lowered position of the support frame and a second position corresponding to the raised position of the support frame, wherein in said first position, a front edge of the seating element is at a first distance from said articulation axis and in said second position, the front edge of the seating element is at a second distance from the articulation axis, and wherein said second distance is less than said first distance.
2. A folding chair according to claim 1 , comprising a pair of joints defining said articulation axis, wherein each joint comprises:
a first joint element fixed to the first structure;
a second joint element fixed to the second structure and pivoting with respect to said first joint element about said articulation axis; and
a third joint element fixed to said support frame and pivoting with respect to said first joint element about said articulation axis.
3. A folding chair according to claim 2 , wherein said transmission mechanism comprises a first transmission member connected to said first joint element and a second transmission member articulated to the support frame about a second axis transverse to said articulation axis and cooperating with said seating element.
4. A folding chair according to claim 3 , wherein said first transmission member is articulated to said second transmission member about a first pin parallel to said second axis.
5. A folding chair according to claim 4 , wherein said first transmission member has a second pin that rotatably engages a hole of a plate fixed to said first joint element.
6. A folding chair according to claim 2 , comprising two transmission mechanisms cooperating with respective joints.
7. A folding chair according to claim 1 , wherein said seating element comprises two panels located opposite to said support frame.
8. A folding chair according to claim 1 , wherein said seating element does not overlap with the backrest in a storage configuration.