A device may be used to selectively and automatically thread one or more needles, such as hair sewing/weaving needles.

A device may be used to selectively and automatically thread one or more needles, such as hair sewing/weaving needles.

[Purpose] To obtain a sewing machine comprising a device with which it is possible to easily perform a threading operation in which a needle thread is inserted into the needle hole of the sewing machine needle, wherein the sewing machine comprises a threading device configured so that the needle thread does not drop onto or coil around an operation part (operation part) of the operation lever of the threading device when a thread-hooking operation is completed before insertion of the needle thread. [Configuration] The present invention comprises: a needle bar 52; a threading shaft 53; a thread-holding tool 71; a threading tool 72 provided at the bottom end of the threading shaft 53; an operation lever 4 that has an operation part 41 and moves the threading shaft 53 up and down and rotates the threading shaft in the circumferential direction; and a cutting tool 93 for the needle thread n. The present invention is configured such that a needle thread guide member A, in which an inclined part 1 is formed that guides the needle thread n from the thread-holding tool 71 to the cutting tool 93, is provided between the thread-holding tool 71 and the cutting tool 93, and the inclined part of the needle thread guide member A guides the needle thread n that has been cut by the cutting tool out of the operation range of the operation lever 4.

[Purpose] To obtain a sewing machine comprising a device with which it is possible to easily perform a threading operation in which a needle thread is inserted into the needle hole of the sewing machine needle, wherein the sewing machine comprises a threading device configured so that the needle thread does not drop onto or coil around an operation part (operation part) of the operation lever of the threading device when a thread-hooking operation is completed before insertion of the needle thread. [Configuration] The present invention comprises: a needle bar 52; a threading shaft 53; a thread-holding tool 71; a threading tool 72 provided at the bottom end of the threading shaft 53; an operation lever 4 that has an operation part 41 and moves the threading shaft 53 up and down and rotates the threading shaft in the circumferential direction; and a cutting tool 93 for the needle thread n. The present invention is configured such that a needle thread guide member A, in which an inclined part 1 is formed that guides the needle thread n from the thread-holding tool 71 to the cutting tool 93, is provided between the thread-holding tool 71 and the cutting tool 93, and the inclined part of the needle thread guide member A guides the needle thread n that has been cut by the cutting tool out of the operation range of the operation lever 4.

A device may be used to selectively and automatically thread one or more needles, such as hair sewing/weaving needles. A threader arm of a plurality of threader arms may be selected via an interface. The selected threader arm may be configured to push a portion of a thread through an eye of a needle received at a needle receptacle associated with the selected threader arm.

A device may be used to selectively and automatically thread one or more needles, such as hair sewing/weaving needles. A threader arm of a plurality of threader arms may be selected via an interface. The selected threader arm may be configured to push a portion of a thread through an eye of a needle received at a needle receptacle associated with the selected threader arm.

Provided is a sewing machine threading device that is compactly configured, and that is capable of preventing a thread hooking claw from disturbing sewing work. When an up-and-down movement operation lever 9 is raised, a thread hooking claw 10 is located above a sewing needle not to disturb sewing work. When the up-and-down movement operation lever 9 is lowered, a sliding member 15 slides along a thread hooking guide shaft 16 to cause the thread hooking claw 10 to be lowered together with a thread hooking support rod 13, rotating unit 23 rotates the thread hooking claw 10 from behind the sewing needle toward an eye of the sewing needle in connection with lowering of the thread hooking support rod 13, and the thread hooking claw 10 is inserted into the eye of the sewing needle.

Provided is a sewing machine threading device that is compactly configured, and that is capable of preventing a thread hooking claw from disturbing sewing work. When an up-and-down movement operation lever 9 is raised, a thread hooking claw 10 is located above a sewing needle not to disturb sewing work. When the up-and-down movement operation lever 9 is lowered, a sliding member 15 slides along a thread hooking guide shaft 16 to cause the thread hooking claw 10 to be lowered together with a thread hooking support rod 13, rotating unit 23 rotates the thread hooking claw 10 from behind the sewing needle toward an eye of the sewing needle in connection with lowering of the thread hooking support rod 13, and the thread hooking claw 10 is inserted into the eye of the sewing needle.

In a sewing machine, an elevating unit is configured to be integrally raised and lowered with a threading lever of a threading apparatus. Furthermore, an operating lever is coupled to a lever interlocking mechanism that interlocks with the rotational operation of the operating lever. Upon pressing threading lever downward from an initial position when operating lever is at an operating position, an elevating unit engages with lever interlocking mechanism. Operating force applied to threading lever is transmitted to operating lever via lever interlocking mechanism, thereby turning operating lever from operating position to non-operating position. Accordingly, even when a presser is at a raised position, by pressing threading lever downward, operating lever is turnable from operating position to non-operating position, thereby allowing presser to return to pressing position.

In a sewing machine, an elevating unit is configured to be integrally raised and lowered with a threading lever of a threading apparatus. Furthermore, an operating lever is coupled to a lever interlocking mechanism that interlocks with the rotational operation of the operating lever. Upon pressing threading lever downward from an initial position when operating lever is at an operating position, an elevating unit engages with lever interlocking mechanism. Operating force applied to threading lever is transmitted to operating lever via lever interlocking mechanism, thereby turning operating lever from operating position to non-operating position. Accordingly, even when a presser is at a raised position, by pressing threading lever downward, operating lever is turnable from operating position to non-operating position, thereby allowing presser to return to pressing position.