| 摘要 |
The lever ( 11 ) is fitted with two rollers ( 20 A, 20 B) which are supported by a core ( 21 ) provided with a mounting bore ( 21 B) on an articulated shaft, wherein the rollers ( 20 A, 20 B) are both mounted between two webs of a pair of webs which are added to the core ( 21 ). The webs ( 22 A, 23 B) are on the whole planar. A first web ( 22 A) of each pair of webs is partially engaged in a hollow housing ( 21 C) created on the lateral surface ( 21 D) of the core ( 21 ). The second web ( 23 B) of the same pair is maintained at a distance from the first web. The hollow housings ( 21 C) are created on the two opposite lateral surfaces ( 21 D) of the core ( 21 ) of the lever ( 11 ).
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