JPS6355982U

JPS6355982U -

Info

Publication number: JPS6355982U
Application number: JP15080686U
Authority: JP
Priority date: 1986-09-30
Filing date: 1986-09-30
Publication date: 1988-04-14
Also published as: JPH0327585Y2

Description

[Brief explanation of the drawing]

第１図はこの考案を具体化したジグザグミシン
の一実施例を示す部分正断面図、第２図は同じく
部分側面断面図、第３図は針棒支枠上に支持され
た諸部材の構成を拡大して示す部分斜視図、第４
図は第３図の状態から針棒支枠の一部及び作動部
材を除去して示す部分斜視図、第５図は第１図の
Ｘ―Ｘ線における部分拡大断面図、第６図は第１
図のＹ―Ｙ線における部分拡大断面図、第７図は
主軸回転角に対する針位置の関係を示すグラフで
ある。４……固定支軸、６……針棒支枠、６ｃ……糸
通し棒支持部、８……針棒、９……針、９ａ……
目孔、１０……規制体としての針棒抱き、１０ａ
……嵌合部、１１……ミシン主軸、１２……連結
機構、１３……回転体、１５……連結部としての
連結ピン、１６……支軸、１７……リンク、１９
……水平釜、２１……糸通し棒、２３……糸通し
用フツク。 Fig. 1 is a partial front sectional view showing an embodiment of a zigzag sewing machine embodying this invention, Fig. 2 is a partial side sectional view of the same, and Fig. 3 is the configuration of various members supported on the needle bar support frame. 4th partial perspective view showing an enlarged view of
The figure is a partial perspective view of the state shown in FIG. 3 with a part of the needle bar support frame and the operating member removed, FIG. 1
FIG. 7, which is a partially enlarged cross-sectional view along line Y--Y in the figure, is a graph showing the relationship between the needle position and the rotation angle of the main shaft. 4...Fixed support shaft, 6...Needle bar support frame, 6c...Threading bar support portion, 8...Needle bar, 9...Needle, 9a...
Eye hole, 10...Needle bar holder as a regulating body, 10a
... Fitting part, 11 ... Sewing machine main shaft, 12 ... Connection mechanism, 13 ... Rotating body, 15 ... Connection pin as a connection part, 16 ... Support shaft, 17 ... Link, 19
...Horizontal hook, 21...Threading rod, 23...Hook for threading.

Claims

[Claims for Utility Model Registration] 1. A needle bar 8 that is supported by a needle bar support frame 6 that is swingable around a vertical axis and that extends parallel to a needle bar 8 that has a needle 9 at its lower end, and has a threading hook at its lower end. 23 is fixed to the threading rod 21, and the threading rod 21 is supported so that the threading rod 21 can rotate around its own axis and move up and down relative to the needle bar 8. A zigzag sewing machine that is equipped with a threading device including a threading rod support part 6c, and that forms a stitch by catching the thread loop of the needle 9 with a horizontal hook 19 that rotates around an axis that substantially coincides with the vertical axis. The threading bar support part 6c is fixed to the needle bar support frame 6 so that the threading bar support part 6c swings integrally with the needle bar support frame 6, and the threading bar support part 6c is fitted with the threading bar 21. A connecting mechanism 12 that fixes a regulating body 10 having a portion 10a to the needle bar 8 and converts the rotational motion of the sewing machine main shaft 11 into an up-and-down reciprocating motion and transmits it to the needle bar 8 is connected to an axis parallel to the threading bar 21. A zigzag sewing machine equipped with a threading device characterized by including a connecting part 15 that is rotatable around the periphery. 2. The connecting mechanism 12 has a link 17, one end of which is pivotally supported on a rotating body 13 fixed to the sewing machine main shaft 11 at a position offset from the sewing machine main shaft 11, and the other end of the link 17 is connected to the thread. The threading device is equipped with the threading device according to claim 1, which is connected to the regulating body 10 by a connecting pin 15 that is rotatable around an axis parallel to the threading rod 21. Zigzag sewing machine.