| 摘要 |
<p>A coupling piece (1) for attaching to each other a lower tube (2), an upper tube (3) and an outer steering head tube (4) of a bicycle frame comprises:
- a wall construction (7) comprising at least two opposite sidewalls (5, 6) and multiple transverse walls (8, 9, 10, 11), the transverse walls connecting the two sidewalls with each other;
- multiple spaced apart steering head passages (14, 15, 16) through at least two of the transverse walls, the steering head passages being configured to receive the outer steering head tube for attachment of the coupling piece (1) to the outer steering head tube when the outer steering head tube extends through those steering head passages;
- a first attachment portion (17) for attachment of the coupling piece to the lower tube; and
- a second attachment portion (18; 11) for attachment of the coupling piece to the upper tube.
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