JPH0436981U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and the drawings show the first embodiment.
The figure is an external view of a sewing machine equipped with the present invention, Figure 2 is an external view of a sewing machine with a partial cross section equipped with the present invention, Figure 3 is a perspective view of the main parts of the present invention, and Figure 4 is an external view of the sewing machine equipped with the present invention. A perspective view showing the second embodiment, FIG. 5 is a cross-sectional view of the main part of the second embodiment of the present invention, and FIGS. 6 and 7 are state diagrams showing the needle thread T ₁ in a specific phase of the present invention. , Figures 8 and 9 are perspective views showing the stitches of the sewing machine;
Figure 0 is a plan view showing the stitches of the sewing machine, Figure 11a
~g are perspective views showing the process of forming normal stitches using a horizontal hook; Figures 12a~g are perspective views showing the process of forming hit stitches using a horizontal hook; Figures 13a~b are needle drop positions and lower threads. A plan view showing a pull-out point, and FIGS. 14a to 14b are configuration diagrams of an upper thread T ₁ and a lower thread T ₂ of a zigzag stitch, where 1 is a sewing machine frame, 2 is an upper shaft, 5 is a needle bar, and 9 2 is a needle bar support body, 22 is a horizontal hook equipped with a thread ring catcher, 23 is a link take-up, 25 is a bobbin winding part, 27 is an upper thread tension applying device, 29 is a thread turning part, 32 is a cam bar, and 33 is an engagement The bar 35 is a recess.

Claims (1)

[Scope of utility model registration request] a needle bar that is moved up and down in conjunction with the rotation of an upper shaft supported on a sewing machine frame; a thread ring catcher that forms stitches in cooperation with the needles attached to the needle bar; and the needle bar. a needle bar support that supports the needle bar and is made to swing around a support shaft; a needle thread tension applying device that adjustably applies tension to the needle thread guided from the bobbin winding section to the needle hole; and the thread ring catching section. The zigzag sewing machine is equipped with a link take-up that pulls up the upper thread released from the needle bar, and includes an engagement bar 33 that projects laterally from the needle bar support, and a base that is pivotally connected to the sewing machine frame and a distal end that extends from the needle bar support. A zigzag sewing machine provided with a thread folding part 29 in which a concave part for folding back the needle thread between the needle thread tension applying device and the link take-up is formed, and a cam bar abutting on the engagement bar is integrally formed. Thread tightening device.