Drive apparatus for sewing machines
AssigneeH. S. Machinery Co., Ltd.
InventorTzu Sang CHAN
Life of this patent
Estimating the term…
Abstract
A drive apparatus for sewing machines including a forepart and a motor shaft horizontally projecting out of the forepart is provided with a sleeve releasably secured to the motor shaft; a rotor disposed on the sleeve; and a motor assembly including a housing having an axial passage with the sleeve rotatably disposed through, an inner space disposed on an end of the housing proximate the forepart, and a stator set disposed in the inner space. The rotor is disposed in the inner space. The rotor, the sleeve, and the motor shaft are co-rotated.
Claims20
A drive apparatus for use in a sewing machine, comprising:
- a sleeve secured to an extension shaft of the sewing machine, the sleeve having a free end and an annular flange adjacent to the free end;
- a stator set;
- a rotor disposed on the sleeve and positioned against the flange;
- and
- a housing having an inner space and a passage through which the free end of the sleeve extends,
- wherein the stator set is disposed in the inner space of the housing for cooperation with the rotor, and wherein the rotor, the sleeve and the extension shaft are co-rotatable.
A method for use with a sewing machine, the sewing machine having an extension shaft, said method comprising:
- securing a sleeve secured to the extension shaft of the sewing machine, the sleeve having a free end and an annular flange adjacent to the free end;
- securing a rotor on the sleeve and positioned against the flange such that the rotor, the sleeve and the extension shaft are co-rotatable;
- providing a housing over the sleeve the housing having an inner space and a passage through which the free end of the sleeve extends;
- providing a stator set in the inner space of the housing for cooperation with the rotor;
- and
- securing a sensor to the stator set for detecting a position of the rotor relative to the stator set while the extension shaft of the sewing machine is rotating.
Dependencies are inferred from the claim text.