HYDRAULIC MECHANISM

To provide a hydraulic mechanism capable of preventing bubbles of lubricant from occurring due to rotation of a toothed wheel inside a casing.SOLUTION: A hydraulic mechanism comprises: a power transmission mechanism 1 in which a storage space S1 capable of storing lubricant therein is formed, and that has a plurality of toothed wheels 1C, 1D capable of transmitting rotational power from a prime mover; a hydraulic device 2 that uses the hydraulic pressure of lubricant as a drive source; and a hydraulic pump P that can pump lubricant to the hydraulic device 2. In at least one of the plurality of toothed wheels 1C, 1D, a covering part 10 is provided to cover an upper peripheral part of the toothed wheel 1C above upper and lower central regions from the outside of a diameter.SELECTED DRAWING: Figure 1 【課題】ケーシング内部における歯付ホイールの回転に起因する潤滑油の気泡の発生を抑制できる油圧機構の提供。【解決手段】内部に潤滑油を貯留可能な貯留空間Ｓ１が形成されるとともに、原動機からの回転動力を伝達可能な複数の歯付ホイール１Ｃ，１Ｄを貯留空間Ｓ１に有する動力伝達機構１と、潤滑油の油圧を駆動源とする油圧機器２と、潤滑油を油圧機器２に圧送可能な油圧ポンプＰと、が備えられ、複数の歯付ホイール１Ｃ，１Ｄのうちの少なくとも一つに、歯付ホイール１Ｃのうちの上下中央領域よりも上側の周部を径外方から覆う覆い部１０が設けられている。【選択図】図１