Massage device and massage wand

A massage wand provided with a drive motor and an elastic massage sleeve, comprising:

• a plurality of slider keel units, wherein each of the slider keel units is provided with a first engaging portion, a supporting portion, and a rotation constraint portion;
• a rotating shaft provided with a plurality of second engaging portions, wherein each of the second engaging portions deviates from a rotation axis (L1) of the drive motor;
• wherein the rotation constraint portion is configured to constrain each slider keel unit such that each slider keel unit only has a freedom (A) of a linear reciprocating motion, and a direction of the freedom (A) is perpendicular to the axis (L1);
• the drive motor is connected to the rotating shaft and configured to drive the second engaging portions to perform a rotational motion around the axis (L1) with a non-zero radius;
• the first engaging portion and the second engaging portion are in coupled interlock, such that a rotational motion of the second engaging portion is converted into a linear reciprocating motion of each slider keel unit along the freedom (A);
• a plurality of the slider keel units is arranged along the axis (L1), and orthographic projections of the units in a direction of the axis (L1) do not overlap with each other;
• and
• the supporting portions are configured to provide external support, and the supporting portions of the plurality of the slider keel units jointly support the massage sleeve to present a specified shape.