US 2015/0308480 A1Published application

Hollow board

AssigneesMeiwa Industry Co., Ltd., Iwata Bolt Kabushiki Kaisha

InventorsShun YUZAWA, Akinori YAZAKI, Fumiyasu NISHIKAWA

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Abstract

Tips of sections in a spreading state come into contact with vertical wall portions of a middle member at positions between a first plate-like member and center portions of the vertical wall portions in the thickness direction. Then, the sections break through the vertical wall portions, and are fastened to a hollow laminated board. Thus, a mounting bracket is attached to the hollow laminated board. This makes it possible to obtain a deck board with a small recessed portion formed in a top face.

Claims1

Dependent claims

A hollow board comprising:

a hollow laminated board having a hollow portion therein;
a mounting member attached to one of a top face side and a bottom face side of the hollow laminated board;
and
a rivet main body which attaches the mounting member to a face on the one side of the hollow laminated board, wherein
the hollow laminated board includes
a tabular first plate-like member arranged on the one side,
a tabular second plate-like member arranged on the other side with a space provided between the first plate-like member and the second plate-like member in a thickness direction of the hollow laminated board, and
a middle member which is arranged between the first plate-like member and the second plate-like member to connect the first plate-like member and the second plate-like member to each other and which has vertical wall portions extending in the thickness direction of the hollow laminated board and forming the hollow portion,
the rivet main body is formed in a tubular shape having a mandrel insertion hole extending in an axial direction, and includes a flange extending in a radial direction and a tubular sleeve extending from the flange in the axial direction,
a blind rivet is formed by the rivet main body and a mandrel inserted and held in the mandrel insertion hole of the rivet main body,
the mandrel includes
a shaft portion which extends like a rod and which has an easily breakable portion having a locally reduced diameter and being provided at a certain midpoint in the axial direction within the shaft portion,
a head portion provided at a tip side of the shaft portion and formed to have a larger diameter than the mandrel insertion hole, and
a protruding portion protruding from the head portion to a tip side of the mandrel by a predetermined length,
a rivet hole which is larger than a diameter of the sleeve of the rivet main body but smaller than a diameter of the flange is formed through each of the face on the one side of the hollow laminated board and the mounting member, and
the mounting member is fastened to the hollow laminated board by the rivet main body in such a manner that
the sleeve of the rivet main body of the blind rivet is inserted into the rivet holes of the face on the one side of the hollow laminated board and the mounting member,
a tip face of the protruding portion of the mandrel is brought into contact with an inside of the face on the other side of the hollow laminated board,
pulling the mandrel in this state to the shaft portion side causes the head portion to tear the sleeve of the rivet main body into sections and these sections to spread outward in the radial direction like petals, and
during the spreading, tips of the sections break through the vertical wall portions of the middle member at positions between the first plate-like member and center portions of the vertical wall portions in the thickness direction, and are fastened to the hollow laminated board.

17 more elements

Dependencies are inferred from the claim text.

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Abstract

A hollow board comprising:

a hollow laminated board having a hollow portion therein;
a mounting member attached to one of a top face side and a bottom face side of the hollow laminated board;
and
a rivet main body which attaches the mounting member to a face on the one side of the hollow laminated board, wherein
the hollow laminated board includes
a tabular first plate-like member arranged on the one side,
a tabular second plate-like member arranged on the other side with a space provided between the first plate-like member and the second plate-like member in a thickness direction of the hollow laminated board, and
a middle member which is arranged between the first plate-like member and the second plate-like member to connect the first plate-like member and the second plate-like member to each other and which has vertical wall portions extending in the thickness direction of the hollow laminated board and forming the hollow portion,
the rivet main body is formed in a tubular shape having a mandrel insertion hole extending in an axial direction, and includes a flange extending in a radial direction and a tubular sleeve extending from the flange in the axial direction,
a blind rivet is formed by the rivet main body and a mandrel inserted and held in the mandrel insertion hole of the rivet main body,
the mandrel includes
a shaft portion which extends like a rod and which has an easily breakable portion having a locally reduced diameter and being provided at a certain midpoint in the axial direction within the shaft portion,
a head portion provided at a tip side of the shaft portion and formed to have a larger diameter than the mandrel insertion hole, and
a protruding portion protruding from the head portion to a tip side of the mandrel by a predetermined length,
a rivet hole which is larger than a diameter of the sleeve of the rivet main body but smaller than a diameter of the flange is formed through each of the face on the one side of the hollow laminated board and the mounting member, and
the mounting member is fastened to the hollow laminated board by the rivet main body in such a manner that
the sleeve of the rivet main body of the blind rivet is inserted into the rivet holes of the face on the one side of the hollow laminated board and the mounting member,
a tip face of the protruding portion of the mandrel is brought into contact with an inside of the face on the other side of the hollow laminated board,
pulling the mandrel in this state to the shaft portion side causes the head portion to tear the sleeve of the rivet main body into sections and these sections to spread outward in the radial direction like petals, and
during the spreading, tips of the sections break through the vertical wall portions of the middle member at positions between the first plate-like member and center portions of the vertical wall portions in the thickness direction, and are fastened to the hollow laminated board.

17 more elements