Abstract: An encoder with oil gas prevention structure including a base, a shaft, a bearing, a cover and an encoding device is provided. The base includes a body and a through hole configured on the body. The shaft is disposed within the though hole. The bearing holds the shaft and is disposed within the through hole, and includes an inner ring and an outer ring wherein the inner ring is set against the first section, and the outer ring is set against a circumference of the through hole. The cover holds the shaft and adjacent to the bearing. The encoding device holds the shaft and is disposed on the cover, and includes a code disc rotatably disposed on the shaft wherein the cover is located between the bearing and the code disc. Therefore, the code disc is prevented from being contaminated by the leaking oil gas from the bearing.

Abstract: The present invention discloses a movement facilitative device, basically comprising a first fixing module, a second fixing module, an energy storing module and a switching module, wherein the first fixing module and the second fixing module are fixed on the first extremity and the second extremity of the animal respectively. The first fixing module is connected with the second fixing module. The present invention has the advantages of decreasing the force required by the muscles during the exercise as well as retarding the impact enforced thereon while the user is jogging or exercising. Furthermore, the switching module of the present invention minimizes the limitations to the movement of the user so as to let the user exercise more effortlessly.

Abstract: The present invention discloses a movement facilitative device, basically comprising a first fixing module, a second fixing module, an energy storing module and a switching module, wherein the first fixing module and the second fixing module are fixed on the first extremity and the second extremity of the animal respectively. The first fixing module is connected with the second fixing module. The present invention has the advantages of decreasing the force required by the muscles during the exercise as well as retarding the impact enforced thereon while the user is jogging or exercising. Furthermore, the switching module of the present invention minimizes the limitations to the movement of the user so as to let the user exercise more effortlessly.