Adapter and photovoltaic module mounting structure using same

The invention relates to an adapter and a photovoltaic module mounting structure using the same. The direction parallel to a mounting surface is defined as the x-axis direction, the direction perpendicular to the mounting surface is defined as the y-axis direction, and a first groove and a second groove are formed in the adapter; the first groove is located in the x-axis positive direction side and the y-axis positive direction side relative to the second groove, the opening direction of the first groove faces the x-axis negative direction side, the opening direction of the second groove facesthe x-axis positive direction side, the lower end of the upper photovoltaic module is arranged in the first groove, and the upper end of the lower photovoltaic module is arranged in the second groove. The photovoltaic module mounting structure comprises the adapter, a flexible buffer gasket and a waterproof adhesive tape. When applied to installation of the photovoltaic module, the photovoltaic module mounting structure