JPS61148276U

JPS61148276U -

Info

Publication number: JPS61148276U
Application number: JP3123085U
Authority: JP
Priority date: 1985-03-05
Filing date: 1985-03-05
Publication date: 1986-09-12

Description

[Brief explanation of the drawing]

第１図は本考案を具体化した一実施例を示す斜
視図、第２図Ａ乃至Ｄはそれぞれ異なる作用状態
を説明するための作用説明図である。図中、１４は駆動腕、１５はルーパー、１６は
ホルダー、１７は連結体としての連結軸、２４は
ばね手段としてのねじりばね、２７は操作部２６
と係合部３１とを有する操作レバー、２９，３０
はそれぞれ保持手段を構成する巻ばね及びストツ
パーである。 FIG. 1 is a perspective view showing an embodiment embodying the present invention, and FIGS. 2A to 2D are operation explanatory diagrams for explaining different operation states. In the figure, 14 is a driving arm, 15 is a looper, 16 is a holder, 17 is a connecting shaft as a connecting body, 24 is a torsion spring as a spring means, and 27 is an operating section 26
and an engaging portion 31, an operating lever 29, 30
are a coiled spring and a stopper, respectively, constituting the holding means.

Claims

[Claims for Utility Model Registration] 1. A looper 15 for forming stitches in cooperation with a needle that reciprocates up and down; A holder 16 that supports the looper 15 and is swingable around one axis; a drive arm 14 that swings around the one axis in synchronization with the vertical movement of the needle; and a drive arm 14 that is manually operable and always spring-actuated to releasably connect the drive arm 14 and the holder 16. Connecting body 17 urged in the connecting direction by
and for rotating the holder 16 to a position that allows threading through the looper 15 when the connection between the holder 16 and the drive arm 14 is released by manual operation that resists the spring action of the connecting body 17. In the sewing machine equipped with a spring means 24, an operating lever 27 having an operating portion 26 is rotatably attached to the sewing machine frame, and the holder 16 and the drive arm 14 are disengaged from each other on the operating lever 27. An engaging portion 31 is provided that can engage with the holder 16 when the holder 16 is rotated to the threading permitting position, and the holder 16 and the drive arm 14 are connected to each other so that the looper 15 swings. When the engagement part 3
holding means 2 including a spring 29 for holding the operating lever 27 in a position where the operating lever 27 does not come into contact with the holder 16;
9 and 30 are provided, and the operating lever 2 is operated after threading the looper 15 at the threading permissible position of the holder 16.
By manual operation against the spring action of 7, the engaging portion 3
1. A looper mechanism for a sewing machine, characterized in that a holder 16 is rotated back to a connecting position with a drive arm 14 via a looper mechanism. 2. A stopper 3 in which the holding means contacts the operating lever 27 and holds the lever in a non-operating position.
1. A looper mechanism in a sewing machine according to claim 1, characterized in that the looper mechanism includes the following: 0.