| 摘要 |
A lie-down massager includes a base frame having an elongated top panel, through which an elongated top opening is formed centrally and lengthwise, a rider provided below the elongated top panel of the base frame, a guide member movably engaged between the base frame and the rider so as to enable the rider to make a horizontally reciprocal movement relative to the base frame, massage bumps that move vertically and/or horizontally along the elongated top opening of the elongated top panel of the base frame, and a lifter that holds the massage bumps and adjusts the height of the massage bumps. The lifter includes a hydraulic actuator that vertically moves the massage bumps, and a hydraulic controller that controls operation of the hydraulic actuator by controlling hydraulic oil flow on both sides of a plunger inside the hydraulic actuator.
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