JPH047071U

JPH047071U -

Info

Publication number: JPH047071U
Application number: JP4617290U
Authority: JP
Priority date: 1990-04-27
Filing date: 1990-04-27
Publication date: 1992-01-22

Description

[Brief explanation of the drawing]

第１図は縁かがりミシンの針下の構造を示す下
ルーパの略斜視図、第２図は下ルーパ部の構造を
示す正面図、第３図は同一部切欠した分解図、第
４図は第１図における−線断面図、第５図は
首振り角度調節機構の他の実施例を示す下ルーパ
部の構造を示す一部切欠した分解図、第６図は従
来の針下の構造を示す下ルーパの略斜視図である
。１……下ルーパ、５……ルーパ支持腕、６……
取付部材、７……首振り調節部材、８……首振り
角度調節接続機構、９……抱き型軸丸、１０……
ルーパ支持腕締結螺子、１１……ルーパ駆動軸、
１２……軸孔、１３……突軸、１５……角度調節
螺子、１８……小螺子、２０……ミシン針。 Fig. 1 is a schematic perspective view of the lower looper showing the structure under the needle of the overlock sewing machine, Fig. 2 is a front view showing the structure of the lower looper, Fig. 3 is an exploded view with the same part cut away, and Fig. 4 is Fig. 5 is a partially cutaway exploded view showing the structure of the lower looper section showing another embodiment of the oscillation angle adjustment mechanism, and Fig. 6 shows the structure of the conventional needle lower part. It is a schematic perspective view of the lower looper shown. 1... lower looper, 5... looper support arm, 6...
Mounting member, 7... Swing adjustment member, 8... Swing angle adjustment connection mechanism, 9... Hug type shaft round, 10...
Looper support arm fastening screw, 11... Looper drive shaft,
12...Shaft hole, 13...Protruded shaft, 15...Angle adjustment screw, 18...Small screw, 20...Sewing machine needle.

Claims

[Scope of Claim for Utility Model Registration] (1) In the lower looper, which is located below the needle of the sewing machine needle and moves forward as the needle rises to hook the needle thread onto the tip of the needle to form a stitch, the looper support arm is connected to the looper drive shaft. It has a structure that is divided into a mounting member that fixes the base end and a swing adjustment member that attaches the lower looper, and both are connected so as to be rotatably adjustable via a swing angle adjustment connection mechanism, and the swing angle adjustment connection mechanism A lower looper attachment device for a sewing machine, characterized in that the gap between the sewing machine needle and the tip of the lower looper is finely adjusted by angular displacement between the attachment member and the swing adjustment member. (2) The swing angle adjustment connection mechanism includes a projecting shaft and a shaft hole for rotatably mounting the projecting shaft at opposing ends of the mounting member and the swing adjustment member, and 2. The lower looper attachment device for a sewing machine according to claim 1, wherein the lower looper attachment device for a sewing machine has a fastening structure in which an angle adjustment screw is screwed into a screw hole screwed on the opposite side.