Sewing machine

Patent metadata

Field	Value
Publication number	US-9359703-B2
Application number	US-201414161571-A
Country	US
Kind code	B2
Filing date	Jan 22, 2014
Priority date	Jan 31, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

The sewing machine has: a base plate that has a guide slit for guiding a bobbin thread that is set on the bottom face side of the throat plate 1 ; and a bobbin thread guide member that has a guide groove for guiding the bobbin thread supplied from a bobbin and includes a cutting blade provide at the end position of the guide groove to cut the bobbin thread guided along the guide groove to an appropriate length. The bobbin thread guide member is secured to the base plate and has a holding member, which holds the end of the bobbin thread, in the guide groove, so as to maintain the state when the bobbin thread was cut.

First claim

What is claimed is:

1. A sewing machine provided with a needle bar to which a needle is attached, a horizontal rotary hook that houses a bobbin on which a bobbin thread for forming stitches in tandem with a vertical operation of the needle bar is wound, a throat plate that houses the horizontal rotary hook in a bed and covers an opening of a top face of the bed, and an opening lid that covers the opening of the throat plate, the sewing machine comprising:
a base plate that has a guide slit for guiding the bobbin thread that is set on a bottom face side of the throat plate; and
a bobbin thread guide member that has a guide groove for guiding the bobbin thread supplied from the bobbin and glides a cutting blade provided at an end position of the guide groove to cut the bobbin thread guided along the guide groove to an appropriate length,
wherein the bobbin thread guide member is secured to the base plate and has a holding member, which holds an end of the bobbin thread, in the guide groove, so as to maintain a state when the bobbin thread is cut.

2. The sewing machine according to claim 1 , wherein the holding member is disposed so as to plug the guide groove.

3. The sewing machine according to claim 1 , wherein the holding member comprises an elastic member.

4. The sewing machine according to claim 1 , wherein the holding member comprises a felt material.

5. The sewing machine according to claim 1 , wherein the holding member comprises a sponge material.

6. The sewing machine according to claim 1 , wherein the holding member comprises a rubber material.

7. The sewing machine according to claim 1 , wherein the holding member comprises a brush type member.

8. The sewing machine according to claim 1 , wherein the holding member comprises a spring.

9. The sewing machine according to claim 1 , wherein the bobbin thread guide member is secured to the base plate and has the holding member, which holds the end of the bobbin thread, in the guide groove, so as to maintain a tense state of the bobbin thread when the bobbin thread is cut.

10. The sewing machine according to claim 1 , wherein the sewing machine is further provided with a thread needle, and
wherein the bobbin thread guide member is secured to the base plate and has the holding member, which holds the end of the bobbin thread, in the guide groove, so as to maintain a state when the bobbin thread is cut such that the bobbin thread and the thread needle interlock.

11. The sewing machine according to claim 1 , wherein the holding member is disposed between a start position and the end position of the guide groove, and
wherein the holding member is disposed closer to the start position of the guide groove than to a position of the cutting blade.

Assignees

• Janome Sewing Machine Co Ltd

Inventors

• Takagi Tustomu
• Maeda Koji
• Sawada Takuya

Classifications

• D05B73/12

  Slides; Needle plates · CPC title

• D05B63/00 Primary

  Devices associated with the loop-taker thread, e.g. for tensioning · CPC title

• D05B65/003

  the thread being engaged manually against the cutting edge of a fixedly arranged knife · CPC title

• D05B65/06

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

• D05B65/02 Primary

  controlled by the sewing mechanisms {(D05B65/006 takes precedence)} · CPC title