Block structure for sound insulation inside automobiles

Concave station for car interior noise block structure, comprising a support frame and the expansion of high-temperature material is fitted after heating may be the backbone of the foaming expansion, the expansion for material fitted on the supporting framework wherein provided with single or multiple pins projecting structure, or provided with a single aperture or a plurality of through-shaped support frame or structure while said pin is provided and shaped pores, the expanded material surrounds the pin structure, the expansion element shaped material embedded in holes formed undercut structure. Soundproofing block structure of the present invention is employed for an automotive pin structure and composite structure upside down or stand-alone mode using the support frame and expandable material firmly coupled together, the pin structure can effectively prevent the expansion of the left-right direction material mobile, flip expandable structure can effectively prevent the movement of material in the vertical direction. Thereby preventing the expansion of the same support frame material is peeled from the foam expansion during the heating, avoiding the products ineffective.