A sewing machine with oil enveloping structure

Abstract

The present invention relates to a sewing machine with a direct drive type upper shaft, which includes an oil seal structure to block the lubricating oil given to the mechanical friction part in the arm of the sewing machine from flowing into / out of the driving motor. The sewing machine of the present invention includes an upper shaft for driving a sewing needle and a lower shaft for driving a hook, and a driving motor connected to any one of the upper shaft and the lower shaft and driving the connected shaft, and also includes a special-effect oil seal structure to block the The lubricating oil supplied to the mechanical friction part of the upper shaft or the lower shaft flows into the drive motor. According to the above construction, due to the oil seal structure, the present invention can prevent the lubricating oil from flowing into / outside the drive motor installed on one side of the sewing machine, thereby protecting the drive motor from damage; and can prevent the lubricating oil from leaking out of the body of the sewing machine , thus avoiding the contamination of the items being sewn.

Description

[0001] Pursuant to 35 U.S.C. §119(a), this non-provisional application claims priority to Patent Application No. 10-2004-0015173 filed in Korea on March 5, 2004, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to a sewing machine with a direct drive upper shaft, in particular to a sewing machine with an oil seal structure to prevent lubricating oil supplied to mechanical friction parts in the arm of the sewing machine from flowing into and / or out of the drive motor. Background technique [0003] A sewing machine generally includes an upper shaft for driving a sewing needle, a lower shaft for driving a snap hook, and a driving motor located on one side of a body part for driving the sewing machine, wherein the driving motor is configured by using any one of the upper shaft and the lower shaft as an output shaft, And connect the output shaft to the connecting medium to drive the sewing machine. However, ...

AI Technical Summary

Problems solved by technology

[0006] Briefly, for the above-mentioned prior art sewing machine without the auxiliary oil seal structure, lubricating oil will flow into the driving part of the driving motor along the upper shaft and the side of the inner wall, so when the lubricating oil is introduced into the arm to allow the machine When the various parts move smoothly, it is bound to cause damage to the motor

The above-mentioned sewing machines also have such problems that, for example, due to the flow of the lubricating oil in / out of the motor frame, the lubricating oil may leak out of the body portion of the sewing machine to contaminate the items being sewn, thus increasing the production efficiency. The difficulty of quality products

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