A backpack vacuum cleaner motor mounting assembly having a first housing, a suspension housing, a suction motor, and one or more springs. The first housing has an inlet, outlet and a suspension chamber in it. The suspension housing is at least partly in the suspension chamber, can move a predetermin
A backpack vacuum cleaner motor mounting assembly having a first housing, a suspension housing, a suction motor, and one or more springs. The first housing has an inlet, outlet and a suspension chamber in it. The suspension housing is at least partly in the suspension chamber, can move a predetermined distance along a suspension direction from a first position to a second position, and is restricted from moving perpendicular to the suspension direction. The suction motor is connected to and moves with the suspension housing. The springs are oriented to bias the suspension housing from the second position to the first position. A backpack vacuum cleaner having a suction motor in a movable suspension housing is also provided.
대표청구항▼
1. A backpack vacuum cleaner motor mounting assembly comprising: a first housing having an air inlet, an air outlet, and a suspension chamber located inside the first housing;a suspension housing at least partially contained within the suspension chamber, the suspension housing being configured to s
1. A backpack vacuum cleaner motor mounting assembly comprising: a first housing having an air inlet, an air outlet, and a suspension chamber located inside the first housing;a suspension housing at least partially contained within the suspension chamber, the suspension housing being configured to slide through a predetermined range of movement during an impact, relative to the suspension chamber, along a suspension direction from a first position to a second position, and the suspension housing being substantially restricted from moving, relative to the suspension chamber, perpendicular to the suspension direction;a suction motor connected to and movable with the suspension housing, the suction motor having a suction motor inlet in fluid communication with the air inlet, and a suction motor outlet in fluid communication with the air outlet; andone or more springs operatively positioned between the first housing and the suspension housing, the one or more springs being oriented to bias the suspension housing from the second position towards the first position;wherein the suction motor has a rotation axis, the rotation axis being generally parallel with the suspension direction. 2. The backpack vacuum cleaner motor mounting assembly of claim 1, wherein the suction motor is connected to the suspension housing by one or more vibration mounts. 3. The backpack vacuum cleaner motor mounting assembly of claim 1, wherein the predetermined range of movement is about 0.5 inches. 4. The backpack vacuum cleaner motor mounting assembly of claim 1, wherein the one or more springs comprise a plurality of coil springs. 5. The backpack vacuum cleaner motor mounting assembly of claim 1, wherein the one or more springs comprise one or more integrated spring/dampers. 6. The backpack vacuum cleaner motor mounting assembly of claim 5, wherein the one or more integrated spring/dampers comprise elastomeric materials having spring-like properties and damper-like properties. 7. The backpack vacuum cleaner motor mounting assembly of claim 1, further comprising one or more damper assemblies operatively positioned between the first housing and the suspension housing, the one or more damper assemblies being configured to generate a damping force in response to a relative movement between the suspension housing and the first housing. 8. The backpack vacuum cleaner motor assembly of claim 7, wherein the one or more damper assemblies comprise a plurality of damper assemblies, each damper assembly comprising: a damper cylinder;a damper piston at least partially contained within the damper cylinder and slideable relative to the damper cylinder along the suspension direction, the damper cylinder and damper piston forming a generally enclosed space therebetween; andan orifice in fluid communication with the generally enclosed space and configured to allow air to enter and leave the generally enclosed space;wherein one of the damper cylinder and the damper piston is connected to and movable with the suspension housing. 9. The backpack vacuum cleaner motor mounting assembly of claim 7, wherein the one or more springs comprise a plurality of springs, and the one or more damper assemblies comprise a plurality of damper assemblies. 10. The backpack vacuum cleaner motor mounting assembly of claim 9, wherein at least one of the plurality of springs or the plurality of damper assemblies is arranged to generally surround a center of gravity of the suction motor. 11. The backpack vacuum cleaner motor mounting assembly of claim 10, wherein the one or more springs and the center of gravity of the suction motor are located at substantially the same position along the suspension direction. 12. The backpack vacuum cleaner motor mounting assembly of claim 1, wherein the suction motor inlet is in sealed fluid communication with the air inlet when the suspension housing is in the first position, and is not in sealed fluid communication with the air inlet when the suspension housing is in the second position. 13. The backpack vacuum cleaner motor mounting assembly of claim 1, wherein the suction motor inlet faces the air inlet. 14. The backpack vacuum cleaner motor mounting assembly of claim 1, further comprising a motor gasket located between the suction motor inlet and the air inlet, the motor gasket forming a seal between the suction motor inlet and the air inlet when the suspension housing is in the first position. 15. The backpack vacuum cleaner of claim 14, wherein the motor gasket is connected to and movable with the suspension housing. 16. The backpack vacuum cleaner of claim 1, further comprising one or more sound-absorbing inserts positioned between the first housing and the suspension housing. 17. The backpack vacuum cleaner of claim 16, wherein the one or more springs comprise a plurality of springs arranged radially around the suspension housing, and the one or more sound-absorbing inserts comprise one or more walls arranged radially around the suspension housing, the walls being located between adjacent springs. 18. The backpack vacuum cleaner motor mounting assembly of claim 1, wherein: the suspension housing comprises an enclosure that generally encloses the suction motor outlet except for one or more openings located on a first side of an axial centerline of the suction motor; andthe air outlet is located on a second side of the axial centerline of the suction motor, the second side being opposite the first side. 19. A backpack vacuum cleaner module comprising: a filtration chamber having a filtration chamber inlet and a filtration chamber outlet, the filtration chamber inlet being configured for connection to a suction hose;a motor module housing having a motor module inlet in fluid communication with the filtration chamber outlet, and a motor module outlet;a suspension chamber located in the motor module housing and in fluid communication between the motor module inlet and the motor module outlet;a suspension housing at least partially contained within the suspension chamber, the suspension housing being configured to move a predetermined distance, relative to the suspension chamber, along a suspension direction from a first position to a second position, and the suspension housing being substantially restricted from moving, relative to the suspension chamber, perpendicular to the suspension direction;a suction motor connected to and movable with the suspension housing, the suction motor having a suction motor inlet in fluid communication with the motor module inlet and a suction motor outlet in fluid communication with the motor module outlet;one or more springs operatively positioned between the motor module housing and the suspension housing, the one or more springs being oriented to bias the suspension housing from the second position towards the first position;one or more damper assemblies operatively positioned between the motor module housing and the suspension housing, the one or more damper assemblies being configured to generate a damping force in response to a relative movement between the suspension housing and the motor module housing;the one or more damper assemblies comprising a plurality of damper assemblies, each damper assembly comprising:a damper cylinder;a damper piston at least partially contained within the damper cylinder and slideable relative to the damper cylinder along the suspension direction, the damper cylinder and damper piston forming a generally enclosed space therebetween; andan orifice in fluid communication with the generally enclosed space and configured to allow air to enter and leave the generally enclosed space;wherein one of the damper cylinder and the damper piston is connected to and movable with the suspension housing. 20. The backpack vacuum cleaner module of claim 19, wherein the backpack module comprises an exterior shell that encloses the filtration chamber, and the motor module housing is connected to the exterior shell. 21. The backpack vacuum cleaner module of claim 20, wherein the motor module housing is located essentially entirely inside the exterior shell. 22. The backpack vacuum cleaner module of claim 19, further comprising one or more damper assemblies operatively positioned between the suspension chamber and the motor module housing. 23. A backpack vacuum cleaner motor mounting assembly comprising: a first housing having an air inlet, an air outlet, and a suspension chamber located inside the first housing;a suspension housing at least partially contained within the suspension chamber, the suspension housing being configured to slide through a predetermined range of movement during an impact, relative to the suspension chamber, along a suspension direction from a first position to a second position, and the suspension housing being substantially restricted from moving, relative to the suspension chamber, perpendicular to the suspension direction;a suction motor connected to and movable with the suspension housing, the suction motor having a suction motor inlet in fluid communication with the air inlet, and a suction motor outlet in fluid communication with the air outlet;one or more springs operatively positioned between the first housing and the suspension housing, the one or more springs being oriented to bias the suspension housing from the second position towards the first position; anda sliding sealed passage between the suction motor inlet and the air inlet configured to slide along a sliding direction upon sliding of the suspension housing through the predetermined range of movement. 24. The backpack vacuum cleaner of claim 23, wherein the suction motor inlet is in sealed fluid communication with the air inlet via the sliding sealed passage when the suspension housing is in the first position, and is not in sealed fluid communication with the air inlet via the sliding sealed passage when the suspension housing is in the second position. 25. The backpack vacuum cleaner of claim 23, wherein the sliding sealed passage comprises a motor gasket located between the suction motor inlet and the air inlet, the motor gasket forming sealed fluid communication between the suction motor inlet and the air inlet with the suspension housing is in the first position. 26. The backpack vacuum cleaner of claim 23, wherein the sliding direction is parallel to the suspension direction.
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