Electric motor-driven compressor having an electrical terminal block assembly
View Patent ↗An electric motor-driven compressor having an electrical terminal block assembly and corresponding method of assembly are provided. The electrical terminal block assembly includes a base plate that has a staging feature for receiving a lug end of a motor stator cable prior to connection of the motor stator cable with a terminal bar of the terminal block assembly. In this way, once the terminal block assembly is lowered into the enclosure and the motor stator cable is no longer visible to the user, a stator cable fastener may be passed through a stator cable mounting hole in the terminal bar to engage the stator cable lug that is being held in the proper position by the staging feature of the base plate. Upon rotation of the stator cable fastener, the stator cable lug may be drawn into conductive engagement with the terminal bar.
1. An electric motor-driven compressor having an electrical terminal block assembly for receiving electricity, said electrical terminal block assembly comprising:
a base plate configured to receive at least one motor stator cable in electrical communication with a motor stator of the motor-driven compressor, the motor stator cable including a stator cable lug on an end thereof;
a terminal block located adjacent the base plate and including at least one conductive terminal bar disposed therein, the terminal bar including at least one stator cable mount and at least one controller cable mount; and
a cover located adjacent the terminal block,
wherein the base plate further includes a staging feature configured to locate the stator cable lug, and wherein the stator cable mount is aligned with the staging feature, and the stator cable mount is configured to receive a stator cable fastener therethrough to connect the stator cable lug to the stator cable mount,
wherein the controller cable mount is configured to receive a controller cable in electrical communication with a motor controller, the controller cable including a controller cable lug on an end thereof, wherein the controller cable mount is configured to receive a controller cable fastener therethrough to connect the controller cable lug to the controller cable mount, and
wherein the stator cable lug is configured to be drawn from the staging feature into contact with the terminal bar via engagement with the stator cable fastener.
2. The electric motor-driven compressor of claim 1 , wherein the cover further includes a rib extending toward the terminal block, and wherein the rib is configured to prevent the stator cable fastener from disengaging from the stator cable lug and to prevent the controller cable fastener from disengaging from the controller cable mount.
3. The electric motor-driven compressor of claim 1 , wherein the base plate further includes at least one lug positioning feature configured to prevent the stator cable lug from rotating upon engagement with or disengagement from the stator cable fastener.
4. The electric motor-driven compressor of claim 3 , wherein the lug positioning feature comprises a pair of substantially parallel walls configured to rotationally constrain a portion of the stator cable lug therebetween.
5. The electric motor-driven compressor of claim 1 , wherein the terminal block includes a channel which houses the terminal bar.
6. The electric motor-driven compressor of claim 1 , wherein the cover is constructed of a non-conductive material and is waterproof.
7. The electric motor-driven compressor of claim 6 , wherein one of the walls of the terminal block enclosure includes at least one access port configured to receive an end of the controller cable therethrough.
8. The electric motor-driven compressor of claim 1 , wherein the base plate and the terminal block are received in a terminal block enclosure comprising four sidewalls.
9. The electric motor-driven compressor of claim 8 , wherein the cover is configured to be affixed to at least one of the sidewalls.
10. The electric motor-driven compressor of claim 1 , wherein the base plate is constructed of a non-conductive material.