Motor assembly with switch module
View Patent ↗A new motor assembly uses a switch module to facilitate the assembly of an electric motor. The switch module can be prefabricated, and is connected to a terminal block on the motor by plug and socket connectors on the terminal block and on a terminal end of the module. The switch module is pre-wired with a power inlet and a switch, eliminating the need for a worker on the motor assembly line to make difficult electrical connections to a traditional terminal block. The switch is arranged in a switch housing that fits within an extension on the motor housing. An interior support wall on the housing fits within a channel between the switch housing and the rest of the switch module, helping to hold the assembly in position. The power inlet is positioned laterally outward from the terminal end and laterally inward of the switch.
1. A motor assembly that has:
a motor:
a terminal that has winding board leads that lead to the motor;
a rigid switch module that has a terminal end that connects to the terminal;
module leads that are on the terminal end of the switch module and fasten to the winding board leads when the switch module is connected to the terminal;
a power frame that is on the switch module;
a set of electrical power leads that are mounted in the power frame and are adapted to receive a connector on an electrical cord;
a switch housing that is on the switch module and is integrally formed with a wall on the power frame;
a switch on the switch module that is electrically connected to both the module leads and to the power leads;
a panel on the switch module that is parallel to and spaced from a wall on the power frame, and forms one side of an open slot that has two open ends and an open side; and
electrical wires that extend through the open slot from the switch to the power leads and to the module leads.
2. The motor assembly of claim 1 , where the switch module also has a ground wire that extends from the power leads to the module leads.
3. A motor assembly that has:
a motor:
a terminal that has winding board leads that lead to the motor;
a rigid switch module that has a terminal end that connects to the terminal;
module leads that are on the terminal end of the switch module and fasten to the winding board leads when the switch module is connected to the terminal;
a power frame that is on the switch module;
a set of electrical power leads that are mounted in the power frame and are adapted to receive a connector on an electrical cord;
a switch housing that is on the switch module and is rigidly connected to a wall on the power frame; and
a switch on the switch module that is electrically connected to both the module leads and to the electrical leads.
4. The motor assembly of claim 3 , in which:
the power frame is positioned laterally between the terminal end and the switch housing.
5. The motor assembly of claim 3 , in which:
the switch housing is separated from the terminal end by a channel;
the motor assembly has at least two walls and an interior support wall that are shaped to receive the switch housing, with the interior support wall fitting into the channel.
6. The motor assembly of claim 3 , where the terminal is on one side of a winding board and is electrically connected to a motor terminal on the opposite side of the winding board.
7. The motor assembly of claim 3 , in which the winding board leads and the module leads are plug and socket connectors.
8. A switch module as recited in claim 3 , in which:
the power leads and the module leads are both accessed from a common direction, with the power leads being disposed at least ½″ farther in that direction than the module leads.