Lead retention bushing
View Patent ↗A conductor lead and power cord retention system for a compressor/pump has a unique bushing for capturing and pinching the cord in an opening in the pump housing. The bushing has a leading end defining an open-ended slot. The bushing slides into a pocket in the housing and overlaps an open-ended slot in the housing. Overlapping the slots creates a bounded (circular for example) opening sized to snuggly pinch the cord sheathing without damaging the conductors. The slots are shaped and sized to accommodate a variety of cord diameters. The bushing is retained in the recess by a pair of angled snap tabs that engage notches and further by mounting of the drive motor to the housing, which forces the bushing against the housing to prevent rattling as well as helps maintain the necessary pinch force and prevents the bushing from being removed without tools.
1. A power cord retention system for an electrical device, comprising:
a housing having an open motor receiving face and formed with a pocket defining a slot with a notch opening to the interior of the slot and tracks on opposite sides of the slot, the slot and tracks opening to the open face; and
a bushing having lateral sides slideably received in the tracks and having a leading end, a trailing end and a snap tab, the snap tab extending between and at an oblique angle to the leading and trailing ends and being engagable with the notch to retain the bushing to the housing, the leading end defining an open-ended slot opening away from the trailing end and overlapping a portion of the slot in the housing so as to define a bounded opening therebetween.
2. The system of claim 1 , wherein the housing is further formed to include a second notch opening opposite the notch and wherein the bushing has a second snap tab extending at an oblique angle in the same direction as the snap tab and engagable with the second notch.
3. The system of claim 1 , wherein a closed end of the bushing slot has essentially semi-circular and a closed end of the housing slot is essentially semi-circular.
4. The system of claim 1 , wherein a closed end of the bushing slot has essentially square inside corners.
5. The system of claims 1 , wherein the housing and the bushing are plastic.
6. The system of claim 1 , wherein the electrical device is a pump including a drive motor received in the motor receiving face of the housing.
7. A power cord retention system for an electrical device, comprising:
a housing having an open face and formed with a pocket defining a slot with a notch opening to the interior of the slot and tracks on opposite sides of the slot, the slot and tracks opening to the oven face; and
a bushing having lateral sides slideably received in the tracks and having a leading end, a trailing end and a snap tab, the snap tab extending between and at an oblique angle to the leading and trailing ends and being engagable with the notch to retain the bushing to the housing, the leading end defining an open-ended slot opening away from a trailing end and overlapping a portion of the slot in the housing so as to define a bounded opening therebetween;
wherein the electrical device is a pump including a drive motor;
wherein the motor is mounted at the open face of the housing so as to abut the trailing end of the bushing.
8. A power cord retention system for an electrical device, comprising:
a housing having an open face and formed with a pocket defining a slot with a notch opening to the interior of the slot and tracks on opposite sides of the slot, the slot and tracks opening to the open face; and
a bushing having lateral sides slideably received in the tracks and having a leading end, a trailing end and a snap tab, the snag tab extending between and at an oblique angle to the leading and trailing ends and being engagable with the notch to retain the bushing to the housing, the leading end defining an open-ended slot opening away from a trailing end and overlapping a portion of the slot in the housing so as to define a bounded opening therebetween;
wherein the electrical device is a pump including a drive motor;
wherein the motor engages the bushing and causes the snap tab to deflect against one side of the notch so as to limit movement of the snap tab with respect to the housing.
9. The system of claim 8 , further comprising a power cord clamped in the bounded opening between the bushing and the housing.
10. The system of claim 8 , wherein the power cord is clamped in the bounded opening to remain fixed against a force of approximately 35 pounds pulling on the cord away from the bushing.