초록 ▼

A core-coil assembly includes: a plurality of teeth parts radially arranged with their pole portions, which are formed at their one ends, forming an inner circumference; a molding part partially molded onto the teeth parts, forming inner sides of the teeth parts to be connected to one another while

A core-coil assembly includes: a plurality of teeth parts radially arranged with their pole portions, which are formed at their one ends, forming an inner circumference; a molding part partially molded onto the teeth parts, forming inner sides of the teeth parts to be connected to one another while forming outer sides of the teeth parts to be isolated at regular intervals and having a molded outer circumferential surface around which a coil is wound; a yoke part having a ring shape and coupled to an outer side, which is not molded to be exposed, of each teeth part to form a magnetic path, so that an assembling process is simplified to thereby improve productivity of a motor, a height difference between the teeth parts is prevented and a coil is wound regularly to thereby improve efficiency of a motor.

대표청구항 ▼

What is claimed is: 1. A core-coil assembly comprising: a plurality of tooth parts, each of the tooth parts having a tooth end and a pole end; a molding part partially molded onto the tooth parts, the tooth parts being radially received by the molding part, the tooth end protruding from an outer ci

What is claimed is: 1. A core-coil assembly comprising: a plurality of tooth parts, each of the tooth parts having a tooth end and a pole end; a molding part partially molded onto the tooth parts, the tooth parts being radially received by the molding part, the tooth end protruding from an outer circumferential surface of the molding part, an inner circumferential surface of the molding part being spaced radially outwardly from an inner face of the pole end; and a yoke part having a ring shape, the yoke part being coupled to the tooth end of each of the tooth parts to form a magnetic path. 2. The assembly of claim 1, wherein the tooth part includes stacked core thin boards. 3. The assembly of claim 2, wherein each core thin board is a silicon steel sheet. 4. The assembly of claim 1, wherein the yoke part includes stacked core thin boards. 5. The assembly of claim 1, wherein a stopping protrusion is located at the tooth end of the tooth part in a stepped manner, and a stopping groove is located in an inner circumferential surface of the yoke part so that the stopping protrusion is engaged thereinto. 6. The assembly of claim 1, wherein the molding part is a single,integral piece for receiving the plurality of tooth parts, and the molding part comprises: a middle molding part encompassing an outer side of the tooth part; an inner molding part extendingly formed at an inner circumferential side of the middle molding part at a predetermined height and having a circular belt shape so that the tooth parts are connected to one another; and an outer molding part extendingly formed at an outer circumferential side of the middle molding part at a predetermined height and having a plate shape so that the tooth parts are isolated. 7. The assembly of claim 6, wherein the inner molding part is formed to be protrusive as high as the thickness of a coil when the coil is completely wound. 8. The assembly of claim 6, wherein the outer molding part is formed to be protrusive as high as the thickness of a coil when the coil is completely wound. 9. The assembly of claim 6, wherein the inner molding portion further comprises at least one winding stopping protrusion to engage with a stopping portion of a winder when a coil is wound using the winder. 10. The assembly of claim 9, wherein the winding stopping protrusion is straightly located between the tooth parts. 11. The assembly of claim 1, wherein the molding part includes at least one winding stopping protrusion extending from a bottom side of the flange to engage with a stopping portion of a winder when a coil is wound using the winder. 12. The assembly of claim 11, wherein the winding stopping protrusion is straightly located between the tooth parts. 13. The assembly of claim 1, wherein the molding part includes a flange extending radially inwardly from the inner circumferential surface of the molding part and being along the inner circumferential surface of the molding part. 14. The assembly of claim 13, wherein the flange is aligned with the inner face of the pole end. 15. The assembly of claim 14, wherein the flange includes a plurality of segments, adjacent segments being spaced apart by a groove to expose an upper side of the pole end. 16. The assembly of claim 15, wherein the groove exposes a portion of the upper side of the pole end. 17. The assembly of claim 16, wherein the groove is located to expose a middle portion of the upper side of the pole end. 18. The assembly of claim 15, wherein the molding part further includes a second flange below the flange, the second flange including a plurality of lower segments, adjacent lower segments of the second flange being spaced apart by a lower groove to expose a lower side of the pole end.