Low cost multi-pole motor constructions and methods of manufacture

A two pole permanent split capacitor motor comprising:

• magnetically conductive stacked laminations each having a two pole central portion with a rotor opening for receiving a rotor and two spaced pairs of stacked adjacent side legs on one side of said central portion and one spaced pair of stacked adjacent side legs on the other side of said central portion;
• an electrically conductive first coil positioned about one spaced pair of the two spaced pairs of stacked adjacent side legs on one side of said central portion;
• an electrically conductive second coil positioned about each of the stacked adjacent side, legs of said spaced pair of side legs on the other side of said central portion;
• the first and second electrically conductive coils being connected to the two pole central portion to provide two sets of alternating polarity poles extending around the two pole central portion:
• said first coil being connected to each of said second coils and one of said first coil or said second coils being connected to a capacitor;
• and
• separate magnetically conductive stacked end laminations for attachment to an other free extremity of each spaced pair of side legs on both sides of said central portion.

A four pole permanent split capacitor motor comprising:

• magnetically conductive stacked laminations each having a four pole central portion with a rotor opening for receiving a rotor and two spaced pairs of stacked adjacent side legs on each side of said central portion;
• an electrically conductive main coil positioned about one stacked adjacent side leg and an electrically conductive auxiliary coil positioned about said other stacked adjacent side leg in each pair of smoked adjacent side legs of the two spaced pairs of stacked adjacent side legs on each side of said central portion;
• the main and auxiliary coils being connected to the four pole central portion to provide two sets of alternating polarity poles extending around the four pole central portion;
• each main coil in each pair of stacked adjacent side legs being connected to one another and each auxiliary coil in each pair of stacked adjacent side legs being connected to one another and to a capacitor;
• and
• separate magnetically conductive stacked end laminations for attachment to an outer free extremity of said two spaced pairs of stacked adjacent side legs on each side of said central portion.

A six pole permanent spat capacitor motor comprising:

• magnetically conductive stacked side laminations each having a six pole central portion with a rotor opening for receiving a rotor and three circumferentially spaced pairs of stacked adjacent side legs;
• an electrically conductive coil positioned about each stacked adjacent side leg of said three circumferentially spaced pair of stacked adjacent side legs;
• the coils being connected to the six pole central portion to provide two sets of alternating polarity poles extending about the six pole central portion:
• said electrically conductive coils being connected to one another as main coils and auxiliary coils with said auxiliary coils being connected to a capacitor;
• and
• separate magnetically conductive stacked end laminations for attachment to an outer free end of each pair of smoked adjacent side legs.

A multi-pole switched reluctance motor comprising:

• magnetically conductive stacked laminations each having a multi-polo central portion with a rotor opening for receiving a rotor and one pair of spaced side legs;
• said rotor having poles circumferentially offset from the poles of said multi-pole central portion at predetermined circumferentially spaced positions;
• an electrically conductive coil positioned about each of the spaced and adjacent side legs of said spaced pair of side legs;
• each coil being electrically connected to provide an alternating plurality of poles extending around the multi-pole central portion;
• and
• separate magnetically conductive stacked end laminations for attachment to an outer free end of said pair of spaced side legs.

A two polo switched reluctance motor comprising:

• magnetically conductive stacked laminations each having a two pole central portion with a rotor opening for receiving a rotor and one pair of spaced side legs;
• said rotor having poles circumferentially offset from the poles of said two pole central portion at predetermined circumferentially spaced positions;
• an electrically conductive coil positioned about each of the spaced and adjacent side legs of said spaced pair of side legs;
• each coil being electrically connected to provide an alternating plurality of poles extending around the two pole central portion;
• and
• separate magnetically conductive stacked end laminations for attachment to an outer free end of said pair of spaced side legs.

A four pole switched reluctance motor comprising:

• magnetically conductive stacked laminations each having a four pole central portion with a rotor opening for receiving a rotor and one pair of spaced side legs;
• said rotor having poles circumferentially offset from the poles of said four pole central portion at predetermined circumferentially spaced positions;
• an electrically conductive coil positioned about each of the spaced and adjacent side legs of said spaced pair of side legs;
• each coil being electrically connected to provide an alternating plurality of poles extending around the four pole central portion;
• and
• separate magnetically conductive stacked end laminations for attachment to an outer free end of said pair of spaced side legs.

A six pole motor comprising:

• magnetically conductive stacked side laminations each having a six pole central portion with a rotor opening for receiving a rotor and three outwardly extending circumferentially spaced pairs of stacked adjacent side legs with each stacked adjacent side leg terminating in an outer free end;
• an electrically conductive coil positioned about each of the stacked adjacent side legs of said three circumferentially spaced pairs of side legs;
• and
• separate magnetically conductive stacked end laminations for attachment to an outer free end of each pair of stacked adjacent side legs.

A stepper motor comprising:

• magnetically conductive stacked laminations each having a multi-pole central portion with a rotor opening for receiving a rotor and two spaced pairs of stacked adjacent side legs on each side of said central portion;
• two sets of alternating polarity poles extending around the multi-pole central portion;
• an electrically conductive coil positioned about each of the stacked adjacent side legs of said two spaced pairs of stacked adjacent side legs on each side of said multi-pole central portion;
• separate magnetically conductive stacked end laminations for attachment to outer free extremities of each pair of said adjacent pairs of stacked adjacent side legs on opposite sides of said central portion;
• a circumferential series of inwardly directed teeth around each rotor opening for cooperation with a permanent magnet rotor having outwardly directed teeth offset by one on opposite ends;
• and
• four alternate coils on opposite sides of the eight pole central portion being connected to the one phase of a two phase power source and the other alternate four coils being connected to the other phase of the two phase power source.

A six pole motor comprising:

• magnetically conductive stacked laminations each having a six pole central portion with rotor opening for receiving a rotor and three outwardly extending circumferentially spaced pairs of spaced and stacked adjacent side legs with each stacked adjacent side leg terminating in an outer free end;
• an electrically conductive coil positioned about each of the stacked adjacent side legs of said three circumferentially spaced pairs of side legs;
• each electrical coil being electrically connected to provide an alternating polarity of poles extending around the six pole central portion;
• and
• separate magnetically conductive stacked U-shaped laminations with spaced legs for attachment to the outer free end of each pair of stacked adjacent side legs.

A six pole motor comprising:

• magnetically conductive stacked laminations each having a six pole central portion with rotor opening for receiving a rotor and three outwardly extending spaced pairs of stacked adjacent side legs with each stacked adjacent side leg terminating in an outer free end, the three spaced pairs of stacked adjacent side legs being generally equidistantly spaced from one another;
• an electrically conductive coil positioned about each of the stacked adjacent side legs of said three circumferentially spaced pairs of stacked adjacent side legs;
• each electrical coil being electrically connected to provide an alternating polarity of poles extending around the six central portion;
• and
• separate magnetically conductive stacked U-shaped laminations with spaced legs for attachment to the outer free end of each pair of stacked adjacent side legs.

A six pole motor comprising:

• magnetically conductive stacked side laminations each having a six pole central portion with a rotor opening for receiving a rotor and three outwardly extending circumferentially spaced pairs of spaced and stacked adjacent side legs;
• each side leg of the stacked adjacent side leg being connected at a first end to the six pole central position and terminating in an outer free end at a second end, the first end of each stacked adjacent side leg having a different polarity than an adjacent stacked side leg to provide an alternating polarity of poles around the six pole central portion, the second end of each stacked adjacent side leg having a different polarity than its first end;
• an electrically conductive coil positioned about each of the stacked adjacent side legs of said three circumferentially spaced pairs of stacked adjacent side legs;
• separate magnetically conductive stacked U-shaped end laminations with spaced legs for attachment to the outer free end of each pair of stacked adjacent side legs;
• and
• each of the electrically conductive coils being connected in series with one another.