US 11,377,767 B2Granted

Feed dog mounting/unmounting mechanism and sewing machine

AssigneeJanome Sewing Machine Co., Ltd.

InventorsMuneyuki Ishikawa, Norihiro Suzuki

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Abstract

In feed dog mounting/unmounting mechanism, lever is slidably provided to feed base in the front-rear direction, and is forced backward by a lever force-applying spring. Upon sliding lever rearward, fixing target portion of feed dog 22 is fixedly held by base-side fixing portion of feed base and lever-side fixing portion of lever arranged in the front-rear direction. Stopper is provided to feed base so as to be movable in the upper-lower direction, and holds lever. When feed dog is mounted, stopper is pressed downward by feed dog, which moves stopper so as to allow lever to slide. With this, lever is slid due to force applied by the lever force-applying spring, thereby allowing fixing target portion to be held, interposed between base-side fixing portion and lever-side fixing portion.

Claims8

Dependent claims

A feed dog mounting/unmounting mechanism comprising:

a feed base configured to perform a feeding operation;
a feed dog detachably mounted on the feed base and having a fixing target portion;
a first fixing portion arranged on the feed base and configured to fix the fixing target portion;
a lever slidably provided on the feed base and having a second fixing portion configured such that, when the lever is slid toward one side in a sliding direction from an initial position so as to be set to a fixed position, the fixing target portion is fixedly held such that it is interposed between the first fixing portion and the second fixing portion;
a lever force-applying member configured to apply a force to the lever toward one direction side in the sliding direction;
and
a stopper movably provided on the feed base and configured to hold the lever at the initial position and such that, when it is pressed downward by the feed dog when the feed dog is mounted, the stopper is moved so as to allow the lever to slide.

4 more elements

Dependencies are inferred from the claim text.