Insulating and glass panel supporting structure of window frame sash in center bar portion at which two-side supporting frame window sashes of sliding window overlap

A window chassis insulating structure and glass panel supporting structure of two-side support frame window chassis (11, 21) at center bar portions where the two-side support frame window chassis (11, 21) overlap each other when a sliding window (10, 20) is closed, in a sliding window system, the window chassis insulating structure and glass panel supporting structure comprises,

• glass support insulation brackets (10a, 20a) attached to a side of each of glass panels 10g, 20g);
• side chassis portions (11a, 21a) made of an aluminum material provided to support the glass support insulation brackets (10a, 20a) from inner and outer surfaces;
• protruding edge portions (11ae, 21ae) and first fitting slots (11a1s, 21a1s) provided on inner extension support ends (11a1, 21a1) extending from the side chassis portions (11a, 21a) to center bar portions;
• side elastic insulating support assemblies (11b, 21b) comprising first plates (11b1, 21b1) slidably coupled to the first fitting slots (11a1s, 21a1s), second plates (11b2, 21b2) disposed to be spaced apart from the first plates (11b1, 21b1) in a side direction of the glass panels and provided to support a side surface of the glass support insulation brackets (10a, 20a), and heat insulating connectors (11b3, 21b3) of elastic material coupled between the first plates (11b1, 21b1) and the second plates (11b2, 21b2);
• and
• rigid support members (11c, 21c) formed to be additionally fitted into the first plates (11b1, 21b1) of the side elastic insulating support assemblies (11b, 21b) and, at the same time, into the protruding edge portions (11ae, 21ae) of the side chassis portions (11a, 21a),
• wherein the rigid support members (11c, 21c) being provided as a reinforced synthetic resin material in a direction in which the window chassis (11, 21) overlap each other on side surfaces of the side elastic insulation support assemblies (11b, 21b), respectively, in order to control displacement of the side elastic insulating support assemblies (11b, 21b) so as to hold the glass panels (10g, 20g).