Sewing machine

Patent metadata

Field	Value
Publication number	US-10443169-B2
Application number	US-201615377514-A
Country	US
Kind code	B2
Filing date	Dec 13, 2016
Priority date	Dec 24, 2014
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A sewing machine includes a threading mechanism, a holding member, and a movement mechanism. The threading mechanism is configured to move a hook between a standby position and an operative position. The holding member includes a cutting blade and a clamping portion. The cutting blade is configured to cut an upper thread. The clamping portion is configured to clamp and hold a thread end of the cut upper thread. The movement mechanism is configured to move the holding member to a first position and a second position. The first direction is a direction from the standby position to the operative position. The second position is a position on a second direction side with respect to the first position. The second direction is a direction opposite to the first direction.

First claim

What is claimed is:

1. A sewing machine comprising:
a threading mechanism configured to move a hook between a standby position before the hook is passed through an eye of a sewing needle and an operative position after the hook is passed through the eye, the hook being configured to pass an upper thread through the eye;
a holding member including a cutting blade and a clamping portion, the cutting blade being configured to cut the upper thread, and the clamping portion being configured to clamp and hold a thread end of the cut upper thread; and
a movement mechanism configured to move the holding member to a first position and a second position, the first position being a position in which the holding member protrudes in a first direction from an exterior member of the sewing machine and is located diagonally above and on a side in the first direction of the sewing needle, the first direction being a direction from the standby position to the operative position, the second position being a position located at a side in a second direction with respect to the first position, and the second direction being a direction opposite to the first direction, wherein
the sewing machine is configured to receive a selection of a first mode and a second mode, the first mode being a mode in which embroidery sewing is performed while the sewing machine automatically moves an embroidery frame with respect to the sewing needle moving up and down, the embroidery frame being configured to hold a work cloth, and the second mode being a mode in which sewing is performed while a user manually moves the work cloth, and
the movement mechanism is configured to move the holding member to the second position in the second mode.

2. The sewing machine according to claim 1 , further comprising:
a single motor configured to drive the threading mechanism and the movement mechanism.

3. The sewing machine according to claim 1 , wherein
the movement mechanism is configured to move the holding member from the second position to the first position in conjunction with a movement of the hook in the first direction, and
the movement mechanism is configured to move the holding member from the first position to the second position in conjunction with a movement of the hook in the second direction.

4. The sewing machine according to claim 1 , wherein
the cutting blade and the clamping portion are provided on a leading end portion of the holding member,
a base end portion of the holding member is swingably supported by a machine frame of the sewing machine, the base end portion being on an opposite side to the leading end portion, and
the movement mechanism being configured to swing the holding member between the first position and the second position.

5. The sewing machine according to claim 1 , wherein
the cutting blade and the clamping portion are provided on a leading end portion of the holding member,
a base end portion of the holding member is supported by a machine frame of the sewing machine, the base end portion being on an opposite side to the leading end portion,
the movement mechanism includes an operation member configured to be operated by a user, and
the movement mechanism is configured to move the holding member between the first position and the second position, in accordance with an operation of the operation member by the user.

6. The sewing machine according to claim 1 , wherein
the movement mechanism is configured to move the holding member to the first position, the second position, and a third position, the third position being a position further to the side in the second direction than the second position, the third position being a position in which the holding member is stored in a recessed portion provided in the exterior member, and the holding member being configured such that, in the third position, the upper thread is uncuttable by the cutting blade.

7. A sewing machine comprising:
a threading mechanism configured to move a hook between a standby position before the hook is passed through an eye of a sewing needle and an operative position after the hook is passed through the eye, the hook being configured to pass an upper thread through the eye;
a holding member including a clamping portion configured to clamp and hold a thread end of the upper thread; and
a movement mechanism configured to move the holding member to a first position and a second position, the first position being a position in which the clamping portion protrudes in a first direction from an exterior member of the sewing machine, the clamping portion being configured to hold the upper thread when the holding member is in the first position, the second position being a position located at a side in a second direction with respect to the first position, the first direction being a direction from the standby position to the operative position, and the second direction being a direction opposite to the first direction, wherein:
the sewing machine is configured to receive a selection of a first mode and a second mode, the first mode being a mode in which embroidery sewing is performed while the sewing machine automatically moves an embroidery frame with respect to the sewing needle moving up and down, the embroidery frame being configured to hold a work cloth, and the second mode being a mode in which sewing is performed while a user manually moves the work cloth, and
the movement mechanism is configured to move the holding member to the second position in the second mode.

8. The sewing machine according to claim 7 , wherein
the movement mechanism is configured to move the holding member from the second position to the first position in conjunction with a movement of the hook in the first direction, and
the movement mechanism is configured to move the holding member from the first position to the second position in conjunction with a movement of the hook in the second direction.

9. A sewing machine comprising:
a threading mechanism configured to move a hook between a standby position before the hook is passed through an eye of a sewing needle and an operative position after the hook is passed through the eye, the hook being configured to pass an upper thread through the eye;
a holding member including a clamping portion configured to clamp and hold a thread end of the upper thread;
a movement mechanism configured to move the holding member to a first position and a second position, a first direction being a direction from the standby position to the operative position, the second position being a position located at a side in a second direction with respect to the first position, and the second direction being a direction opposite to the first direction; and
a single motor configured to drive the threading mechanism and the movement mechanism.

10. The sewing machine according to claim 9 , wherein
the movement mechanism is configured to move the holding member from the second position to the first position in conjunction with a movement of the hook in the first direction, and
the movement mechanism is configured to move the holding member from the first position to the second position in conjunction with a movement of the hook in the second direction.

11. The sewing machine according to claim 9 , wherein
the sewing machine is configured to receive a selection of a first mode and a second mode, the first mode being a mode in which embroidery sewing is performed while the sewing machine automatically moves an embroidery frame with respect to the sewing needle moving up and down, the embroidery frame being configured to hold a work cloth, and the second mode being a mode in which sewing is performed while a user manu

Assignees

• Brother Ind Ltd

Inventors

• Ueda Daisuke
• Iida Mitsuhiro
• Osamura Takahira

Classifications

• D05B65/06 Primary

  and for disposing of the severed thread end {; Catching or wiping devices for the severed thread} · CPC title

• D05B87/02

  with mechanical means for moving thread through needle {or looper} eye · CPC title