Janome Sewing Machine Company Limited

Yoshitaka Bamba

Jun Mafune

Yumiko Kambara

Koji Maeda

Koichi Honda

In a needle plate, a needle plate hole is configured to include a hole-side cutting side that cuts a cutting target object together with a blade portion, and a relief side that allows a cut portion of the cutting target object to escape. Specifically, the needle plate hole has the hole-side cutting side that shears the cutting target object together with a blade-side cutting side of the blade portion, and the relief side that forms a gap between the blade portion to be inserted and the relief side. In this manner, in the former stage of cutting processing, the cutting target object can be cut by the hole-side cutting side and the blade-side cutting side.

Needle plate and sewing machine including same

In a sewing machine, a plurality of needle plate holes are formed in a needle plate. The needle plate holes are arranged at positions respectively corresponding to a plurality of blade-side rotation positions of a cutwork blade. In this manner, the needle plate hole is formed in a shape corresponding to a shape of a blade portion, and a direction of the needle plate hole can match a direction of the blade portion that is arranged above to face the needle plate hole. Specifically, a linear hole-side cutting surface corresponding to a blade-side cutting surface of the blade portion is formed in the needle plate hole, and the blade-side cutting surface and the hole-side cutting surface can be arranged to face each other in a direction orthogonal to both the surfaces in a plan view.

Sewing machine

A needle plate replacement device including positioning mechanisms provided in an opposing manner in the needle plate and the bed portion, the positioning mechanisms positioning the needle plate to an attaching position in the bed portion; a lock mechanism including a locking member provided in the bed portion and a locked member provided in the needle plate, in which by mounting the needle plate on the attaching position in the bed portion, the locking member and the locked member is locked to each other thus maintaining a locked state; a push-up mechanism provided in the bed portion, the push-up mechanism pushing up the needle plate mounted on the bed portion towards a dismount position above the bed portion; and a release mechanism cancelling the locked state between the locking member and the locked member of the lock mechanism by being interlocked with an operation of the push-up mechanism.

Growing community of inventors

Tokyo, Japan

Yoshitaka Bamba