Electrical connections for windings of motor stators

• US 4,177,397 A
• Filed: 03/17/1978
• Issued: 12/04/1979
• Est. Priority Date: 03/17/1978
• Status: Expired due to Term

• Current Assignee: AMP Incorporated (Johnson Controls International plc)
• Original Assignee: AMP Incorporated (Johnson Controls International plc)
• Inventors: Lill, John F.
• Primary Examiner(s): Skudy, R.
• Application Number:
  US05/887,584
• Time in Patent Office: 627 Days
• Field of Search: 310/71, 310/42, 310/91, 310/270, 310/43, 336/192, 339/97 P, 339/98, 339/119 R, 174/72 A
• US Class Current: 310/71
• CPC Class Codes: H01R 4/2416 the contact members having insulation-cutting edges, e.g. of tuning fork type
• CPC Class Codes: H02K 11/25 Devices for sensing temperature, or actuated thereby
• CPC Class Codes: H02K 3/50 Fastening of winding heads, equalising connectors, or connections thereto
• CPC Class Codes: Y10S 174/20 Stator

Abstract

A terminal housing which is intended to be mounted on a motor stator comprises a housing member having a terminal-receiving face and a base surface which is directed in the opposite direction from the terminal-receiving face. The housing has an integral open rectangular mounting frame which comprises arms extending in opposite directions from the endwalls of the housing, parallel legs which extend from the ends of the arms, and a strut which extends between the ends of the legs. The housing and the integral mounting frame are dimensioned such that the housing can be mounted on one face of the stator with the legs extending across the circumferential surface of the stator and with the strut extending across the other face of the stator. When the stator is assembled to the motor housing, the frame is captured by the motor housing and flexed by the surface of the motor housing so that the terminal housing is firmly retained on the surface of the stator face.

Claims

1. In an electric motor sub-assembly of the type comprising a hollow cylindrical motor housing, a stator disposed in said housing and coil windings on said stator, said stator having oppositely directed faces and an external circumferential surface, said circumferential surface having arcuate portions which are against internal surface portions of said housing, and having portions which are adjacent to said arcuate surface which are spaced from said internal surface of said housing, the improvement to said sub-assembly comprising:

a terminal housing mounted on one of said faces of said stator, said housing comprising an elongated block of insulating material having a terminal-receiving face and having terminal-receiving cavities extending into said terminal-receiving face, said housing extending across said face at a location adjacent to one of said arcuate portions,

integral retaining means extending from said housing, said retaining means comprising parallel spaced-apart legs extending from said housing and an integral strut extending between the ends of said legs, said legs extending across said adjacent portions of said circumferential surface on each side of said one arcuate portion, said strut extending across the other one of said faces whereby, said housing and retaining means are captured on said stator by said arcuate surface portions of said stator and said internal wall portion of said housing.

2. A motor sub-assembly as set forth in claim 1, said retaining means comprising parallel spaced-apart legs extending from said housing and an integral strut extending between the ends of said legs, said legs extending across said adjacent portions of said circumferential surface on each side of said arcuate portions, said strut extending across the other one of said faces.

3. A motor sub-assembly as set forth in claim 1, said housing having a base surface, said base surface being on said one face, said base surface and said terminal-receiving face being oppositely directed.

4. A motor sub-assembly as set forth in claim 3, said housing having parallel sidewalls and parallel endwalls extending between said base surface and said terminal-receiving face, arm portions extending from said endwalls, said arm portions being integral with said legs.

5. An electric motor sub-assembly as set forth in claim 1, said legs being snugly against said internal surface of said housing, said retaining means being resiliently deformed by said housing whereby said housing is firmly and immovably held on said stator.

6. In an electric motor sub-assembly of the type comprising a hollow cylindrical motor housing, a stator disposed in said housing and coil windings in said stator, said stator having oppositely directed faces and an external circumferential surface, said circumferential surface having arcuate portions which are against internal surface portions of said housing, portions of said surface which are adjacent to said circumferential surface being spaced from said internal surface of said housing, the improvement to said sub-assembly comprising:

terminal housing means having integral mounting means,

said terminal housing means comprising a generally rectangular block of insulating material having a base surface and a terminal-receiving face, said base surface and said terminal-receiving face being oppositely directed, oppositely directed sidewalls and oppositely directed endwalls extending between said base surface and said terminal-receiving face,

said mounting means comprising an open frame extending from said endwalls, said frame having spaced apart parallel legs and a strut member extending between said legs at the ends thereof,

said base surface of said terminal housing means being on one of said faces and extending as a chord with respect to said arcuate portions of said circumferential surface, said parallel legs extending across said portions of said circumferential surface which are adjacent to said arcuate surface portions, said strut member extending across the other face of said stator,

said windings having lead wires extending to said terminal-receiving face and being in electrical contact with terminals disposed in cavities which extend into said terminal-receiving face.

7. A motor sub-assembly as set forth in claim 6, portions of said frame being flexed by said internal walls of said motor housing whereby said terminal housing and said mounting means are clamped to said stator and said housing is held immovably on said stator.