| 摘要 |
PURPOSE: A contraction hole on a cow milking machine is provided to massage nipples of cow with pneumatic pressure, and to inject the air periodically through an air inlet hole. CONSTITUTION: A contraction hole on a cow milking machine includes a cover member(110), a penetration part(122), and a settling member(120). The cover member is connected with a space part on a side of a main body. An air inlet hole is formed on the space part. A nipple is inserted into the penetration part formed on the space pat of the cover member. The settling member is made of a rubber material while pressing the nipple of the cow. The cover member is made of a hard material. |
