Oblique thread-guiding link of a sewing machine
AssigneeChing Chi Machine Co., Ltd.
InventorShih-Fang Chen
Life of this patent
Estimating the term…
Abstract
An oblique thread-guiding link of a sewing machine, including a swing arm having a front swing arm and a rear swing arm and formed with a central shaft hole. A pivot shaft is fixedly fitted in the shaft hole of the swing arm. Two ends of the pivot shaft are obliquely pivotally mounted in two opposite sidewalls of the housing of the sewing machine. One end of the pivot shaft protrudes from the housing of the sewing machine. The front end of the front swing arm is positioned above a needle holder mechanism and aligned and coupled therewith. The rear end of the rear swing arm is positioned above a driving mechanism and aligned and coupled therewith. One end of a thread-guiding fixing seat is fixedly connected with the protruding end of the pivot shaft and can be swung along with the swing arm.
Claims4
An oblique thread-guiding link of a sewing machine, comprising:
- (a) a swing arm having a sleeve section formed with a central axial shaft hole, a pivot shaft being snugly tightly fitted in the shaft hole, a front swing arm forward radially projecting from the middle of outer circumference of the sleeve section, a rear swing arm rearward radially projecting from the middle of outer circumference of the sleeve section,
- (b) a needle holder mechanism coupled with a front end of the front swing arm;
- (c) a driving mechanism coupled with a rear end of the rear swing arm;
- (d) a thread-guiding fixing seat, a first end of the thread-guiding fixing seat being fixedly connected with one end of the pivot shaft;
- and
- (e) a thread-guiding bar fixedly mounted on the thread-guiding fixing seat and formed with multiple thread-guiding eyelets, said oblique thread-guiding link being characterized in that two ends of the pivot shaft fitted in the swing arm are obliquely pivotally mounted in two opposite sidewalls of the sewing machine, the central axes of the front and rear swing arms coinciding with each other, the front end of the front swing arm being positioned above the needle holder mechanism and aligned and coupled therewith, the rear end of the rear swing arm being positioned above the driving mechanism and aligned and coupled therewith.
Dependencies are inferred from the claim text.