Insert molded end bell for a submersible motor and method of manufacture thereof
First Claim
1. A submersible motor comprising:
- a metal housing; and
an end bell for sealing an open end of the housing, the end bell comprising;
a metal base plate having an external surface and an internal surface, the external surface forming an external surface of the motor;
a plastic insert molded to substantially all of the internal surface of the base plate, wherein a portion of the base plate is retainingly embedded in the insert; and
wherein the base plate, the insert and the housing include a plurality of aligned mounting holes, each of the holes for receiving a fastener to engage the housing to maintain the insert in engagement with the housing to secure the insert to the base plate and to secure the end bell to the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
An end bell for a motor has a base plate, a bearing and a molded insert to couple the bearing to the base plate. The end bell with molded insert is durable, light weight and has good anti-corrosion properties. The bearing is held in relation to the base plate while the molded insert is disposed. A post-mold machining operation can be used to both size the bearing hole to the motor shaft but also to align the hole in relation to the base plate. Bushings and fasteners for assembly of the end bell to the motor housing and supplemental supports may be pre-attached to the base plate, molded into the molded insert or added in a post-mold operation. Deformations in the end bell may be used to couple the molded insert to the end bell.
19 Citations
16 Claims
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1. A submersible motor comprising:
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a metal housing; and an end bell for sealing an open end of the housing, the end bell comprising; a metal base plate having an external surface and an internal surface, the external surface forming an external surface of the motor; a plastic insert molded to substantially all of the internal surface of the base plate, wherein a portion of the base plate is retainingly embedded in the insert; and wherein the base plate, the insert and the housing include a plurality of aligned mounting holes, each of the holes for receiving a fastener to engage the housing to maintain the insert in engagement with the housing to secure the insert to the base plate and to secure the end bell to the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A motor constructed for use in a submersible application comprising:
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a metal housing having an open end; a motor apparatus disposed in the housing, the motor apparatus comprising a rotor, windings and a shaft; and an end bell for sealingly closing the open end, the end bell comprising; a metal base plate having an external surface and an internal surface, the external surface forming an exterior surface of the motor; a bearing for accepting the shaft; a plastic insert molded to the bearing and to substantially all of the internal surface of the base plate, wherein a portion of the base plate is retainingly embedded in the insert; and wherein the base plate, the insert and the housing include a plurality of aligned mounting holes, each of the holes for receiving a fastener to engage the housing maintain the insert in engagement with the housing to secure the insert to the base plate and to secure the end bell to the housing. - View Dependent Claims (14, 15, 16)
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Specification