Pumping assembly

A fluid sprayer configured to spray a spray fluid, the fluid sprayer comprising:

• a pumping assembly comprising:
• an electric motor, the electric motor comprising a rotor and a stator, at least a portion of the rotor located directly radially outward of the stator relative to a rotational axis of the electric motor, the electric motor configured to output rotational motion;
• a drive which converts rotational motion output by the electric motor into linear reciprocating motion;
• a pump, the pump receiving linear reciprocating motion from the drive to pump the spray fluid;
• a frame, the frame stationary during operation of the pumping assembly, wherein a part of the frame extends within the electric motor and the part of the frame is a tube;
• and
• a drive shaft connected to the rotor extends within and through the tube while the stator is located directly radially outward from the tube;
• wherein the tube extends rearward from an upright portion of the frame and the tube is cantilevered from the upright portion of the frame;
• a supply hose extending from the pumping assembly to convey the spray fluid from the pumping assembly;
• and
• a spray gun configured to receive the spray fluid from the supply hose and emit the spray fluid as a fluid spray.

A fluid sprayer configured to spray a spray fluid, the fluid sprayer comprising:

• a pumping assembly comprising:
• an electric motor, the electric motor comprising a rotor, a rotor body, and a stator, the stator comprising a plurality of electromagnet coils, the rotor comprising a circular array of magnets, the rotor body comprising a plurality of blades and an outer tube to which the circular array of magnets are mounted, at least a portion of the rotor located directly radially outward of the stator relative to a rotational axis of the electric motor such that the rotor rotates around the stator, the electric motor configured to output rotational motion;
• a drive which converts rotational motion output by the electric motor into linear reciprocating motion;
• a drive shaft connected to the rotor to receive a rotational output from the rotor, wherein the rotor is connected to an input end of the drive shaft and an output end of the drive shaft interfaces with a gear of the drive, at least part of the drive shaft located directly radially inward of both of the rotor and the stator relative to the rotational axis, wherein the input end is a rear end of the drive shaft and the output end is a forward end of the drive shaft;
• a pump, the pump receiving linear reciprocating motion from the drive to pump the spray fluid;
• and
• a frame, the frame stationary during operation of the pumping assembly, wherein a part of the frame extends within the electric motor, the stator is mounted on the part of the frame, and the drive shaft extends within the part of the frame;
• wherein the drive shaft extends through the electric motor such that the output end is disposed closer to the pump than the input end relative to the pump;
• and
• wherein the plurality of blades structurally connect the outer tube to the drive shaft such that the driving force from the plurality of magnets is transmitted radially inward through the plurality of blades to the drive shaft while the plurality of blades also cause airflow between the electromagnet coils to cool the electromagnet coils when the rotor rotates to operate the pump;
• a supply hose to convey the spray fluid from the pumping assembly;
• and
• a spray gun configured to receive the spray fluid from the supply hose and emit the spray fluid as a fluid spray.

A fluid sprayer configured to spray a spray fluid, the fluid sprayer comprising:

• an electric motor, the electric motor comprising a rotor and a stator, at least a portion of the rotor located directly radially outward of the stator relative to a rotational axis of the electric motor such that at least the portion of the rotor rotates around the stator, the electric motor configured to output rotational motion;
• a drive which converts rotational motion output by the electric motor into linear reciprocating motion;
• a drive shaft connected to the rotor to receive a rotational output from the rotor, the drive shaft connected to the rotor at a rear end of the electric motor by a rotor frame, at least part of the drive shaft located directly radially inward of both of the rotor and the stator relative to the rotational axis;
• a pump, the pump receiving linear reciprocating motion from the drive to pump the spray fluid, the pump disposed forward of the electric motor;
• a first bearing through which the drive shaft extends, the first bearing supporting the drive shaft;
• and
• a frame, the frame stationary during operation of the pumping assembly, wherein a part of the frame extends within the electric motor and the part of the frame is a tube;
• wherein the first bearing is located directly radially between the drive shaft and the rotor relative to the rotational axis,
• wherein the first bearing is located directly radially between the drive shaft and the stator relative to the rotational axis,
• wherein a forward end of the drive shaft interfaces with the drive, and
• wherein the pump is disposed forward of the electric motor.