Positioning device for an ally movable tongue seat
OwnerHsien-Chang Tsenginventor
Life of this patent
Estimating the term…
Abstract
A positioning device for rotating a movable tongue seat is essentially provided with a pin and a pin hole between a movable tongue seat and a cutter seat for driving the movable tongue seat. Rotating the positioning member can drive the movable tongue seat to move to a corresponding position, so that the movable tongue on the movable tongue seat can be extended and retracted from the top of the seat in an optimal position, and can be reliably controlled.
Claims18
A positioning device for rotating a movable tongue seat, wherein the tongue seat is provided on a cutter seat of a sewing machine, and a movable tongue is on the movable tongue seat;
- the positioning device of the movable tongue seat comprising:
- a positioning member disposed between the movable tongue seat and the cutter seat, the positioning member being provided with a rotary end which is located toward one end of the cutter seat, wherein the positioning member rotates about the rotary end and is further provided with a drive member having a plurality of teeth for engaging with teeth of a driven portion of the movable tongue seat, so that the drive member drives the driven portion, the drive member and the rotary end are coaxially arranged;
- and
- a pivot hole and a pivot provided between the movable tongue seat and the cutter seat, so that the movable tongue seat is able to rotate on the cutter seat by rotating about the pivot, when the positioning member rotates about the rotary end, the drive member pushes the movable tongue seat to rotate about the pivot to a desired position.
A positioning device for rotating a movable tongue seat, wherein the tongue seat is provided on a cutter seat of a sewing machine, and a movable tongue is on the movable tongue seat;
- the positioning device of the movable tongue seat comprising:
- a positioning member disposed between the movable tongue seat and the cutter seat, the positioning member being provided with a rotary end which is located toward one end of the cutter seat, wherein the positioning member rotates about the rotary end and is further provided with a drive member which is in contact with a driven portion of the movable tongue seat to generate friction force to drive the driven portion, the drive member and the rotary end are coaxially arranged;
- and
- a pivot hole and a pivot provided between the movable tongue seat and the cutter seat, so that the movable tongue seat is able to rotate on the cutter seat by rotating about the pivot, when the positioning member rotates about the rotary end, the drive member pushes the movable tongue seat to rotate about the pivot to a desired position.
Dependencies are inferred from the claim text.