Proposed are a carbon frame and a method of manufacturing the same capable of improving torsional stiffness. The method includes the steps of: (a) preparing at least two forms; (b) wrapping up the forms with vinyl sheets; (c) laminating carbon prepregs on the vinyl sheets; (d) combining the forms to put the combined forms in a mold; and (e) injecting heat and wind into the vinyl sheets.
B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
The present invention relates to a carbon frame and a manufacturing method therefor, and provided are a carbon frame manufacturing method capable of improving torsional stiffness, and a carbon frame manufactured thereby, the method comprising the steps of: (a) preparing at least two pieces of foam; (b) wrapping up each piece of foam with plastic; (c) stacking a carbon prepreg on the plastic; (d) combining the piece of foam so as to put same in a mold; and (e) injecting heat and wind into the plastic.
B29C 70/46 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
B29C 70/30 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core
B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
B29C 65/02 - Joining of preformed partsApparatus therefor by heating, with or without pressure
B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
The present invention relates to a battery case mounting structure and a foldable electric bicycle comprising same. The present invention provides: a battery case mounting structure for mounting a battery case to a foldable electric bicycle which comprises a main frame disposed in the transverse direction, a seatpost longitudinally formed at the rear end of the main frame, and a reinforcement frame connecting the seatpost to the main frame, wherein the battery case is mounted, by using a fixation means, to a triangular space formed by the mainframe, the seatpost, and the reinforcement frame; and a foldable electric bicycle comprising same.
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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