| 摘要 |
PURPOSE: A lubricating device of a sewing machine is characterized by spraying oil on a needle. The lubricating device of the sewing machine is capable of lubricating and cooling the needle, reducing labor, increasing durability of the needle and increasing quality of products. CONSTITUTION: The lubricating device is comprised of: a needle(15) moving above and below; and an oil feeding part(21) spraying oil on the needle. The oil feeding part(21) is comprised of: an oil storage(23); a Venturi tube(25) which is connected with the oil storage(23), taking oil from the oil storage(23) by current difference generated by flowing of compressed air; and a spraying nozzle(27) which is formed on one end of the Venturi tube(25), spraying oil on the needle(15).
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