JPH0399565U

JPH0399565U -

Info

Publication number: JPH0399565U
Application number: JP12734590U
Authority: JP
Priority date: 1990-11-29
Filing date: 1990-11-29
Publication date: 1991-10-17

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例として適用したミ
シンの縦断正面図、第２図は同ミシンの底面図、
第３図は同ミシンの縦断左側面図、第４図は同ミ
シンの右側面図、第５図はこの実施例の分解斜視
図、第６図は第５図に示したものの正送り時にお
ける−線断面図、第７図は第６図に示したも
のの−線断面図、第８図は第５図に示したも
のの逆送り時における−線断面図、第９図は
第６図および第８図に示した第１の伝達機構の説
明側面図、第１０図は同伝達機構の説明左側面図
である。１……中間軸（駆動軸）、８……下軸（軸体）
、１７……ワンウエイクラツチ、１８……腕体（
揺動部材）、３０……クラツチ、１６……送り軸
（第１の送り軸）、２８……逆送り軸（第２の送
り軸）、３０……クラツチ、Ｔ_１……第１の伝達
機構、Ｔ_２……第２の伝達機構。 Fig. 1 is a longitudinal sectional front view of a sewing machine applied as an embodiment of this invention, Fig. 2 is a bottom view of the same sewing machine,
Fig. 3 is a longitudinal left side view of the same sewing machine, Fig. 4 is a right side view of the same sewing machine, Fig. 5 is an exploded perspective view of this embodiment, and Fig. 6 is the same as shown in Fig. 5 during normal feed. 7 is a sectional view taken along a line shown in FIG. 6, FIG. 8 is a sectional view taken along a line shown in FIG. FIG. 8 is an explanatory side view of the first transmission mechanism shown in FIG. 8, and FIG. 10 is an explanatory left side view of the same transmission mechanism. 1... Intermediate shaft (drive shaft), 8... Lower shaft (shaft body)
, 17... One-way clutch, 18... Arm body (
Swing member), 30...Clutch, 16...Feed shaft (first feed shaft), 28...Reverse feed shaft (second feed shaft), 30...Clutch, _T1 ...First transmission mechanism, T ₂ ... second transmission mechanism.

Claims

[Scope of Claim for Utility Model Registration] A workpiece feeding device for a sewing machine that feeds a workpiece using a pair of wheels that move the front and back sides of the workpiece, which is rotatably supported on the machine frame and linked to a needle bar. a first feed shaft having a clutch portion formed at one end of the hollow shaft that rotates intermittently in a fixed direction; a clutch portion formed at one end of the hollow shaft rotatably supported on the machine frame; a second feed shaft that is disposed opposite to the clutch portion of the feed shaft and transmits rotation to at least one of the wheels; and a second feed shaft that is movable in the axial direction within the hollow shafts of the first feed shaft and the second feed shaft. a clutch that supports the first and second feed shafts and has a clutch portion that can be selectively brought into and out of contact with the respective clutch portions of the first and second feed shafts, and is interposed between the first and second feed shafts;
a first transmission mechanism that transmits the rotation of the first feed shaft so that the rotation direction of the second feed shaft is opposite to the rotation direction of the first feed shaft; A work feed device for a sewing machine, characterized in that the rotating direction of the wheel is switched between forward and reverse directions by moving the wheel into contact with the feed shaft.