Chair backrest structure and foldable chair
OwnerLuhao LENGinventor
Life of this patent
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Abstract
A chair backrest structure and a backrest chair having the chair backrest structure. The chair backrest structure includes a backrest plate and a fixed frame for supporting the backrest plate. At least an upper edge of the backrest plate is folded backward to form a fixed flange, and the fixed frame comprises an installation slot corresponding to the fixed flange. The backrest plate is a vacuum-formed plastic plate, and a surface of the fixed flange comprises one or more inverted protruding teeth formed by vacuum-forming or by molding. The fixed flange is disposed in the installation slot, and the one or more inverted protruding teeth are buckled to an edge of the installation slot to limit the fixed flange from being separated from the installation slot.
Claims12
A chair backrest structure, comprising:
- a backrest plate, and
- a fixed frame for supporting the backrest plate, wherein:
- the backrest plate is a plastic element,
- the fixed frame is a metal element,
- at least an upper edge of the backrest plate is folded backward to form a fixed flange,
- the fixed frame comprises an installation slot corresponding to the fixed flange,
- the backrest plate is a vacuum-formed plastic plate,
- a surface of the fixed flange comprises one or more inverted protruding teeth formed by vacuum-forming or by molding,
- the fixed flange is disposed in the installation slot, and
- the one or more inverted protruding teeth are buckled to an edge of the installation slot to limit the fixed flange from being separated from the installation slot.
Dependencies are inferred from the claim text.