下轮改为凸缘轮，彻底改变了原双链轮成本高，易脱链的缺陷。

Next to the wheel flange, completely changed the original double chain cost is high, easy to take off the chain of defects.

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此外，按摩轮支架装配有具有上铰接点和下铰接点的凸缘，其中上铰接点连接至所述颈臂，下铰接点连接至上述轴。

Moreover, the wheel support is fitted with a flange with an upper articulation point connected to the cervical arm and a lower articulation point that is connected to aforementioned shaft.

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上按摩轮所处的位置将取决于上述凸缘和颈臂的长度，所述长度可根据本发明装置的型式而变化。

The position adopted by the upper massage wheel will depend on the length of the cervical arm and aforesaid flange, which can vary according to the version of the invention device.

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