| 摘要 |
<p>A bicycle frame employing members with partially flat sided sections which are jointed to make specific use of these flat sides. The three members of the main frame (1), the down tube (3), the top tube (2), and the seat tube (4) all have a hollow, partially flat sided section. The width of the distance between each respective member's flat side's inner wall are different at their joints. The top tube's (2) inner wall width is the same as the seat tube's (4) external width. This enables one respective member to be cut from above or below to overlap another member to form an overlap joint. These joints feature an overlap area (12) which can be affixed by physical or chemical means. The assembly can be further enhanced both structurally and aesthetically by the addition of gussets (13). The gusset (13) is hollow and has a back wall (15) and a mating wall (16) which provides a complete matching surface to the surface it mates to on the frame tube. These gussets (13) can be fixed for example by bonding or welding.</p> |
