Sewing machine module and sewing machine

Patent metadata

Field	Value
Publication number	US-9062402-B2
Application number	US-201313788727-A
Country	US
Kind code	B2
Filing date	Mar 7, 2013
Priority date	Mar 28, 2012
Publication date	Jun 23, 2015
Grant date	Jun 23, 2015

Abstract

A sewing machine module mounted in a sewing machine that includes a feed mechanism, a shuttle mechanism, a frame that covers at least a portion of a side face of the feed mechanism, a portion of a side face of the shuttle mechanism, a portion of a bottom face of the feed mechanism, and a portion of a bottom face of the shuttle mechanism and that supports the feed mechanism and the shuttle mechanism in a state in which a top side of the feed mechanism and a top side of the shuttle mechanism are open, a cover member that is formed into a flat plate shape and that covers the top side of the feed mechanism and the top side of the shuttle mechanism that are supported by the frame, and a joining mechanism that joins the frame and the cover member.

First claim

What is claimed is:

1. A sewing machine module that is mounted in a sewing machine, comprising:
a feed mechanism;
a shuttle mechanism;
a frame that covers at least a portion of a side face of the feed mechanism, a portion of a side face of the shuttle mechanism, a portion of a bottom face of the feed mechanism, and a portion of a bottom face of the shuttle mechanism and that supports the feed mechanism and the shuttle mechanism in a state in which a top side of the feed mechanism and a top side of the shuttle mechanism are open;
a cover member that is formed into a flat plate shape and that covers the top side of the feed mechanism and the top side of the shuttle mechanism that are supported by the frame; and
a joining mechanism that joins the frame and the cover member, wherein
the feed mechanism includes
a feed dog,
a feed bar that supports the feed dog and is configured such that the feed dog swings up and down,
a lower shaft that is supported by the frame below the feed bar and is configured such that the lower shaft rotates,
an up-down feed cam that is fixed to the lower shaft,
an urging mechanism that is provided on the feed bar, that is in contact with a bottom side of the cover member, and that urges the feed bar downward, and
a contacting element that maintains a state of contact with the up-down feed cam, such that the feed bar is urged downward by the urging mechanism, and that, by swinging in conjunction with rotation of the up-down feed cam, causes the feed bar to swing up and down.

2. The sewing machine module according to claim 1 , further comprising:
an adjusting screw that is provided in the feed bar and that adjusts a distance between the contacting element and the feed bar; and
a leaf spring that is urged such that the leaf spring is in contact with and presses against the adjusting screw and that restricts rotation of the adjusting screw.

3. The sewing machine module according to claim 1 , wherein
the urging mechanism includes
a compression spring that is provided on the feed bar, and
a spring cover that covers at least an end portion of the compression spring on the side toward the cover member and that is urged by the compression spring such that the spring cover is in contact with and presses against the cover member.

4. The sewing machine module according to claim 3 , wherein
the spring cover includes a contact portion that has a curved shape that protrudes upward and that is in contact with the bottom side of the cover member.

5. The sewing machine module according to claim 1 , wherein
the feed mechanism further includes
a feed arm that supports the feed bar and is configured such that the feed bar swings, and
a coupling member that couples the feed arm and the feed bar and is configured such that the feed arm and the feed bar swing, and
the coupling member includes
a shaft portion that extends through a first hole that is formed in the feed bar and a second hole that is formed in the feed arm, and
a locking portion that has flexibility, that allows the shaft portion to move such that the shaft portion is inserted into the first hole and the second hole, and that is locked to at least one of the feed bar and the feed arm in a state in which the shaft portion extends through the first hole and the second hole.

6. A sewing machine module that is mounted in a sewing machine, comprising:
a feed mechanism
a shuttle mechanism;
a frame that covers at least a portion of a side face of the feed mechanism, a portion of a side face of the shuttle mechanism, a portion of a bottom face of the feed mechanism, and a portion of a bottom face of the shuttle mechanism and that supports the feed mechanism and the shuttle mechanism in a state in which a to side of the feed mechanism and a to side of the shuttle mechanism are open;
a cover member that is formed into a flat plate shape and that covers the top side of the feed mechanism and the top side of the shuttle mechanism that are supported by the frame; and
a joining mechanism that joins the frame and the cover member, wherein
the shuttle mechanism includes
an outer shuttle that grips a thread, and
an inner shuttle that is fitted into an inner side of the outer shuttle in a state in which the inner shuttle is rotatable in relation to the outer shuttle, and wherein
the cover member includes
a rotation-stopping member and a hold-down member as integral parts of the cover member, the rotation-stopping member coming into contact with a portion of the inner shuttle and locking the rotation of the inner shuttle, and the hold-down member restricting upward movement of the inner shuttle.

7. A sewing machine module that is mounted in a sewing machine, comprising:
a feed mechanism;
a shuttle mechanism
a frame that is formed from a synthetic resin material and that covers at least a portion of a side face of the feed mechanism, a portion of a side face of the shuttle mechanism, a portion of a bottom face of the feed mechanism, and a portion of a bottom face of the shuttle mechanism and that supports the feed mechanism and the shuttle mechanism in a state in which a top side of the feed mechanism and a top side of the shuttle mechanism are open;
a cover member that is formed from a metal plate into a flat plate shape and that covers the top side of the feed mechanism and the top side of the shuttle mechanism that are supported by the frame; and
a joining mechanism that joins the frame and the cover member.

Assignees

• Mizuno Kenichi
• Hasegawa Katsuhisa
• Ota Shin
• Brother Ind Ltd

Inventors

• Mizuno Kenichi
• Hasegawa Katsuhisa
• Ota Shin

Classifications

• D05B57/00

  Loop takers, e.g. loopers · CPC title

• D05B27/02

  with feed dogs having horizontal and vertical movements · CPC title

• D05B73/00 Primary

  Casings · CPC title