Patent Application
20140230867
Any and all applications for which a foreign or domestic priority claim is identified in the Application Data Sheet as filed with the present application, including U.S. 61/766,640, are hereby incorporated by reference under 37 CFR 1.57.
1. Field of the Invention
This application is directed to a cantilever umbrella that can retract and extend, and that also can tilt laterally from side to side to provide flexible positioning of the shade provided thereby.
2. Description of the Related Art
Umbrellas generally have a support pole centrally located directly beneath the canopy. This construction has several disadvantages. For example, the pole is located at the most sheltered position under the canopy. Also, the pole obstructs the view of persons seated beneath the canopy. Some umbrella designs locate the support pole to the side of the canopy, generally suspending the canopy from above. A disadvantage of these designs is that they are larger, taking up more space than umbrellas supported from below. A few umbrella designs support a canopy from above and are retractable to reduce the amount of space that they require.
Often times, umbrellas provide shade that is optimal during some times of the day when the sun is directly overhead, but less so when the sun is not directly overhead. Therefore, some umbrella designs provide for tilting of the shade providing portion, or canopy. Although this function is very useful, it becomes difficult to keep the umbrella compact while providing all the functions of retractability, tiltability, and the ability to open and close the canopy frame.
For all the reasons set forth above, new umbrella designs are needed that are retractable and extendable, that can be tilted from side to side to adjust the shade that is provided, and that can open and close to facilitate storage when shade is not needed. It is preferred that such functions be provided in a compact arrangement to keep the weight and cost of the umbrella down and also to keep the umbrella compact.
In one embodiment, an umbrella assembly is provided that includes a canopy assembly comprising a shade structure and a frame having an upper portion disposed below the shade structure. The frame also includes a lower portion disposed below and supporting the upper portion. The umbrella assembly also includes a support pole having an upper portion and a lower portion configured to be supported in an upright position by a base. The umbrella assembly also includes a collar coupled with the upper portion of the support pole. The umbrella assembly also includes a cantilevered beam having a first end disposed below the shade structure and coupled with the frame. The cantilevered beam also includes a second end disposed adjacent to the support pole when the umbrella assembly is in an open position. The cantilevered beam extends through the collar. The umbrella assembly also includes a latch mechanism coupled with the collar. The collar includes a first configuration that permits the cantilevered beam to be translated through the collar toward and away from the open position. The collar also includes a second configuration in which the cantilevered beam is prevented from being translated through the collar toward and away from the open position. The umbrella assembly also includes a tilt mechanism disposed at the second end of the cantilever beam. The tilt mechanism is capable of being actuated at the second end of the cantilever beam to rotate the canopy assembly remotely at the first end. The umbrella assembly also includes a clutch mechanism. The clutch mechanism includes a locking device disposed within and adjacent to the first end of the cantilevered beam and an actuator disposed adjacent to the second end of the cantilevered beam. The umbrella assembly also includes a cable having a first end coupled with the collar and a second end coupled with the lower portion of the frame. A mid portion of the cable is disposed above the cantilever beam. The cable has a fixed length such that as the cantilevered beam is extended within the collar to the open position, the cable applies an upward force to the lower portion of the frame to raise the lower portion of the frame. When the cantilevered beam is fully extended and the latch is in the second configuration preventing the cantilevered beam from moving away from the open position, the cable is tensioned keeping the canopy assembly fully open.
In another embodiment, an umbrella assembly is provided that includes an upright pole and a cantilevered beam. The cantilevered beam includes a connected end coupled to the upright pole and a free end translatable outward away from the pole. The umbrella assembly also includes a canopy frame coupled with the free end of the cantilevered beam. The umbrella assembly also includes a tilt mechanism operable from the connected end to rotate the free end and the canopy about an axis extending through the cantilevered beam. The umbrella assembly also includes a fixed length cable that is tensioned as the cantilevered beam is translated outward, the tensioning causing the canopy frame to open.
In another embodiment, a canopy frame includes, an upper portion having an upper hub with a plurality of ribs extending outwardly thereof. The canopy frame also includes a lower portion comprising a lower hub having a plurality of struts extending upwardly to the ribs. The canopy frame also includes a first pole portion extending downwardly from the upper hub and a second pole portion extending upwardly from the lower hub.
In some embodiments, the cable is coupled with the lower hub and extends within the first and second pole portions. In some embodiments, the umbrella assembly includes an elbow having a first portion coupled with the free end of the cantilevered beam and a second portion pivotally coupled with the first pole portion.
In some embodiments, the second portion of the elbow includes a semicircular sleeve configured to mate with the first pole portion when the canopy frame is open. In some embodiments, the second portion of the elbow comprises a semicircular recess configured to mate with the first pole portion when the canopy frame is closed.
In some embodiments the umbrella assembly includes a collar coupled with the upper portion of the upright pole. The collar is configured to permit the cantilevered beam to slide therein inward and outward. In some embodiments, the umbrella assembly includes a latch mechanism coupled with the collar having a first configuration that permits the cantilevered beam to be translated through the collar to open and close the canopy frame.
In some embodiments, the tilt mechanism includes a worm gear engaged with a drive shaft disposed in the cantilever beam. The drive shaft is configured to be coupled with the canopy frame by a disengageable drive mechanism. In some embodiments, the disengageable drive mechanism includes a lever disposed at the connected end of the cantilevered beam and a cable disposed within the draft shaft within the cantilevered beam.
The abovementioned and other features of the inventions disclosed herein are described below with reference to the drawings of the preferred embodiments. The illustrated embodiments are intended to illustrate, but not to limit the inventions. The drawings contain the following figures:
While the present description sets forth specific details of various embodiments, it will be appreciated that the description is illustrative only and should not be construed in any way as limiting. Furthermore, various applications of such embodiments and modifications thereto, which may occur to those who are skilled in the art, are also encompassed by the general concepts described herein.
The umbrella assembly 1 includes an upright pole (e.g., support pole 12) that has an upper portion 14 and a lower portion 16. The pole 12 is configured to be supported in an upright position by a base 18. The umbrella assembly 1 includes a collar 20 coupled with the upper portion 14 of the support pole 12. The umbrella assembly 1 includes a cantilevered beam 22 that has a first end 24 disposed below the shade structure 4. The first end 24 is coupled with the frame 6, as discussed further below. The cantilevered beam 22 has a second end 26 disposed adjacent to the support pole 12 when the umbrella assembly 1 is in an open position. The cantilevered beam 22 extends through the collar 20. As discussed more below, the cantilevered beam 22 preferably is extendable (e.g., slideable) through the collar 20 between extended and retracted configurations. The extended configuration generally corresponds to an open position of the canopy assembly 2. The retracted configuration generally corresponds to a closed position of the canopy assembly 2.
The umbrella assembly 1 can include a latch mechanism 28 coupled with the collar 20. The latch mechanism 28 preferably has a first configuration, e.g., un-latched (not shown) that permits the cantilevered beam 22 to be translated through the collar 20 between extended and retracted configurations. The latch mechanism 28 has a second configuration (e.g., latched), as shown in
The umbrella assembly includes a tilt mechanism 30 disposed adjacent to or at the second end 26 of the cantilever beam 22. The tilt mechanism 30 is actuated adjacent to or at the second end 26 of the cantilever beam 22 to rotate the canopy assembly 2 at the first end 24 remotely. The tilt mechanism 30 includes an elongate member 32 (e.g., shaft), as illustrated in
In some embodiments, the umbrella assembly 1 includes a clutch mechanism 36 to actuate a device that maintains the canopy assembly 2 in any of a range of tilt positions. The clutch mechanism 36 includes or is coupled with a locking device 38 disposed within and adjacent to the first end 24 of the cantilevered beam 22. The clutch mechanism 36 also can include an actuator 40 disposed adjacent to the second end 26 of the cantilevered beam 22. The locking device 38 preferably includes first and second locking components 64 and 66 disposed adjacent to the first end 24. The clutch mechanism 36 also includes a tension member 42 (e.g., cable, rod, etc.) disposed within the channel 34 of the elongate member 32.
In some embodiments, the first locking component 64 is fixed to the cantilevered beam 22 adjacent to the first end 24. The second locking component 66 is slideable over the elongate member 32 (e.g., shaft) between a locked position and an unlocked position. When the second locking component 66 is in the unlocked position the second locking component 66 is rotatable with the elongate member 32 (e.g., shaft)
In some embodiments, the umbrella assembly 1 includes a device for actuating the canopy assembly 2 from a closed to an open position. One such device can be configured to automatically open the opening the canopy assembly 2 as the cantilevered beam 22 is extended, as discussed above. One such device includes a cable 44 having a first end 46 coupled with a fixed portion of the umbrella assembly 1 and a second end 48 coupled with the lower portion 10 of the frame 6 (e.g., coupled with a lower hub 52). In the variation illustrated in the figures, the first end 46 is coupled with the collar 20. In other variations, the first end 46 can be coupled with the upper portion 14 of the pole 12. The cable 44 includes a middle portion 50 disposed above the cantilevered beam 22. The cable 44 preferably has a fixed length such that as the cantilevered beam 22 is extended within the collar 20 to the extended configuration, the cable 44 applies an upward force to the lower portion 10 of the frame 6 to raise the lower portion 10 of the frame 6 (e.g., lower hub 52).
When the cantilevered beam 22 is fully extended and the latch mechanism 28 is in the second (e.g., latched) configuration, the cantilevered beam 22 is prevented from moving away from the fully extended position and the cable 44 is tensioned keeping the canopy assembly 4 fully open. In some embodiments, the fixed length cable 44 is tensioned as the cantilevered beam 22 is translated outward such that the tensioning causes the canopy frame 6 to open. In some embodiments, the canopy frame 6 is configured to move and be retained in an open position (as illustrated in
In some embodiments, the first end 46 of the cable 44 is coupled to the collar 20. In some embodiments, the cable 44 is positioned above an exterior surface of the cantilevered beam 22 as illustrated in
In some embodiments, as illustrated in
In some embodiments, the umbrella assembly 1 comprises an elbow member 68. The elbow member 68 includes a first portion 70 coupled with the first end 24 of the cantilevered beam 22 and a second portion 72 coupled with the first pole portion 56. The second portion 72 coupled to the first pole portion 56 permits the pole portion 56 to pivot relative to the second portion 72, as is clear from the orientations of these components in
As discussed above, in some embodiments, the umbrella assembly 1 includes a collar 20 coupled with the upper portion 14 of the upright pole 12. The collar 20 has a channel through which the cantilevered beam 22 can slide inward toward the pole 12 to close the canopy frame 6 and outward to open the canopy frame 6. In some embodiments, the latch mechanism 28 includes a handle 78 hingedly coupled to a first engagement member 80 (e.g., protrusion) disposed on the collar 20. In some embodiments, the first engagement member 80 is disposed on a sleeve coupled to the cantilevered beam 22. As illustrated in
As discussed above, in some embodiments, the umbrella assembly 1 includes a tilt mechanism 30. In some embodiments, the tilt mechanism 30 comprises a worm gear 86 engaged with the elongate member 32 disposed in the cantilever beam 22. The elongate member 32 is coupled with the canopy frame 6 by the clutch mechanism 36. In some embodiments, the tilt mechanism 30 includes a first portion (e.g., including the elongate member 32) and a second portion (e.g., including the shaft 92). The first portion extends through the cantilevered beam 22 to a first end 90. The first end 90 is rotatably coupled with the first portion 70 of the elbow member 68. The second portion is configured to receive the crank handle 94. Rotation of the crank handle 94 actuates the second portion to rotate the first portion (e.g., including elongate member 32) of the tilt mechanism 30 and the first portion 70 of the elbow member 68 about an axis 62 extending through the cantilevered beam 22. In some embodiments, the first portion of the tilt mechanism 30 is rotated about an axis transverse to a longitudinal axis of the upright pole. In some embodiments, the worm gear 86 engages with the elongate member 32 via a shaft 102 coupled to the worm gear 86. The shaft 102 can extend into engagement with the channel 34 formed within the elongate member 32.
In one configuration, torque is transferred between the shaft 102 and the elongate member by a direct drive construction. For example, the elongate member 32 and shaft 102 can each comprise one or more flat or planar sides or surfaces. The flat or planar side or surface of the shaft 102 can directly engage the flat or planar side or surface of the elongate member 32 to assure that torque is directly applied to the elongate member 32 by the shaft 102 when the worm gear 86 is rotated. Advantages of such surfaces are discussed further below. In other embodiments, non-flat surfaces can be used such as arched, circular or round. For example, an outer surface can be provided for the shaft 102 and the elongate member 32 that has a plurality of arcuate surfaces separated by substantially linear segments. This construction permits the shaft 102 to be received in the elongate member 32 but prevents the shaft from rotating in the elongate member. Rotation of the shaft 102 directly rotates the elongate member 32.
In some embodiments, the tilt mechanism 30 includes a worm gear arrangement such that a worm 88 is configured to drive or rotate the worm gear 86. The worm 88 includes a second portion or shaft 92 engageable by the crank handle 94 for turning the worm 88 clockwise and counter-clockwise to drive or rotate the worm gear 86. Rotation of the worm gear 86 rotates the elongate member 32 and the elbow member 68, and as a result, tilts the canopy frame 6. The worm gear 86, elongate member 32 and elbow member 68 each rotate about the axis 62. This rotation enables the canopy assembly 2 and shade structure 4 to be positioned at a range of tilt angles relative to the axis 62, which allows the user to move the shade cast by the umbrella assembly 1 to a desired position. In some embodiments, the canopy assembly 2 is rotated about an axis extending transversely to a longitudinal axis of the upright pole. In some embodiments, the worm 88 and worm gear 86 arrangement includes a self-locking feature of worm devices as is known by those with skill in the art. For example, internal resistance can be sufficient to allow the worm gear 86, elongate member 32, elbow member 68, and canopy assembly 2 to hold a desired position without a separate locking device. In other embodiments as discussed elsewhere herein a separate locking device is provided.
In some embodiments, the clutch mechanism 36 comprises an actuator 40 disposed at the second end 26 of the cantilevered beam 22 and a tension member 42 (e.g., cable, rod, etc.) disposed within the elongate member 32 within the cantilevered beam 22. The actuator 40 can comprise a handle, lever, or other rotatable mechanism 104, a shaft 108, an engagement portion 110 and a stop mechanism 106. In some embodiments, the engagement portion 110 extends radially outward from an outer surface of the shaft 108 and is engaged with the tension member 42. The handle 104 is configured to be coupled with the shaft 108 such that pulling or pushing the handle 104 produces tension in the tension member 42 (e.g., cable, rod, etc.). Releasing the handle 104, releases the tension in the tension member 42. Stop member 106 extends radially out from an outer surface of the shaft 108 and is configured to abut with an inner surface 114 of a housing 112 that a portion of the actuator 40 and worm gear 86 of the tilt mechanism 30 are positioned within. The stop member 106 is configured to abut the inner surface 114 to provide a limit to tensioning the tension member 42 by actuating the handle 104. The stop member 106 also defines the range of motion of the actuator 40 by preventing its rotation beyond the point of contact of the stop member with the inner surface 114. The contact position can correspond to the fully actuated state. In some embodiments, the actuator 40 moves from the fully actuated state to the unactuated state by releasing a torsional spring that is coupled with the actuator 40. The spring is deformed to store spring energy as the actuator moves toward the fully actuated state. The spring releases the store spring energy as the actuator moves away from the fully actuated state.
In some embodiments, the first end 130 of the tension member 42 is coupled to the actuator 40. The second end 132 is coupled to an engagement member 122 (e.g., block, shaft, etc.). The engagement member 122 is secured to the second locking component 66 of the clutch mechanism 36. In some embodiments, the engagement member 122 extends in a generally transverse direction through the second locking component 66. In some embodiments, one or more elastic members 120 (e.g., springs) are coupled to a side of the engagement member 122 facing away from the elbow member 68. As discussed herein, the elongate member 32 extends within the cantilevered beam 22. The tension member 42 extends within the channel 34 of the elongate member 32. Applying a force to the handle 104 of the actuator 40 creates tension in the tension member 42. Such tension, moves engagement member 122 rearwards and the second locking component 66 into the unlocked position and out of engagement with the first locking component 64. In some embodiments, the engagement member 122 slides in a rearward direction, compressing the one or more elastic members 120, and moving the second locking component 66 along the elongate member 32 towards the second end 26. As shown in
In some embodiments, maintaining tension in the tension member 42 allows the second locking mechanism 66 to remain in the unlocked position. As such, the umbrella canopy 6 can then be rotated or tilted. By turning the handle 94, the worm 88 can drive the worm gear 86 and rotate the elongate member 32 to tilt the elbow member 68 and thus the umbrella canopy 6. Releasing the handle 104 releases the tension in the tension member 42 and the one or more elastic members 120 bias the second locking component 66 to the locked position and into engagement with the first locking component 64. In some embodiments, corresponding geared or toothed members of the first and second locking components 64 engage with one another to secure the second locking component 66 into the locked position wherein rotation or tilting of the canopy frame 6 is prevented. In some embodiments, the first locking component 64 includes a protrusion 118 positioned on an exterior surface of the first locking component 64. The protrusion 118 is permanently received in a slot, notch or recess 116 formed in the first end 24 of the beam 22. Thus the first locking component 64 is prevented from rotating relative to the beam 22 in all states of the clutch mechanism 36. Other ways can be provided for non-rotatably connecting the first locking component 64 to the beam 22 can include screws and other fasteners, cap structures enclosing at least a portion of both the component 64 and the beam 22, an interference fit, and combinations of these approaches. When the second locking component 66 is in the locked position, engaged with the first locking component 64, the second locking component 66 is prevented from rotating relative to the beam 22. This locked state prevents rotation or tilting of the elbow member 68 and the frame 6.
Rotation and tilting of the elbow member 68 and the frame 6 is enabled by actuating the clutch mechanism 36 such that the second locking component 66 is moved away from the first locking component 64 such that these components do not engage. In this position, the elongate member 32 which extends through but does not engage the first locking component 64 can rotate. As discussed further below, the first end 90 of the elongate member 32 is received in the elbow member 68 to directly rotate the elbow member.
In some embodiments, a rotation interface 134 is provided between the first locking component 64 and the elbow member 68. In one embodiment, as illustrated in
As illustrated in
In some embodiments, the housing 112 can comprise two or more pieces configured to couple together and contain a space therein for the components of the tilt mechanism 30 and the clutch mechanism 36. In some embodiments, the housing 112 is coupled to the second end 26 of the cantilevered beam 22. Both the handle 104 and the crank handle 94 can be integrated with the respective shafts 108, 92 they are configured to rotate separately or to be formed as separate pieces. In some embodiments, the handle 104 and crank handle 94 can be inserted into openings that extend from an exterior surface of the housing 112 into the interior of the housing 112 to engage the respective shafts 108, 92.
In some embodiments, the housing 112 is rotatably coupled to a second pole 126 as illustrated in
In some embodiments, the first portion of the elbow member 68 comprises a recess 96 formed therein and the first end 90 of the first portion (e.g., elongate member 32) of the tilt mechanism 30 is disposed in the recess 96. In some embodiments, the first end 90 of the first portion (e.g., elongate member 32) of the tilt mechanism 30 is configured to mate with the recess 96 of the elbow member 68 to directly apply a torque to the elbow member 68. In some embodiments, the first portion of the tilt mechanism 30 comprises an elongate member 32 (e.g., shaft) with at least a flat (e.g., planar) side 98 and the recess 96 of the elbow member 68 comprises a corresponding flat (e.g., planar) surface 100. In some embodiments, the corresponding flat side 98 and flat surface 100 are configured to mate or engage such that torque can be applied directly to the elbow member 68 from the elongate member 32 (e.g., shaft). In some embodiments, such an arrangement with corresponding flat sides and/or surfaces allows the transmission of torque between the elongate member 32 (e.g., shaft) and elbow member 68 without the need for additional transmission components such as gears or toothed members. For example, the recess 96 and the elongate member 32 (e.g., shaft) can comprise cross sectional shapes such as a square, rectangle, hexagon, pentagon, trexagon, triangle, or any other shape with at least one flat or planar side. For these structures and the direct drive surface discussed above for the end of the elongate member 32 disposed in the housing 112, the flat sides can be any non-round cross-sectional profile such that pins or other connectors are not required to transfer torque between the mating structures. In other embodiments, the recess 96 or elongate member 32 (e.g., shaft) can comprise a round, cylindrical, or arcuate cross section.
Although these inventions have been disclosed in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the present inventions extend beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the inventions and obvious modifications and equivalents thereof. In addition, while several variations of the inventions have been shown and described in detail, other modifications, which are within the scope of these inventions, will be readily apparent to those of skill in the art based upon this disclosure. It is also contemplated that various combination or sub-combinations of the specific features and aspects of the embodiments may be made and still fall within the scope of the inventions. It should be understood that various features and aspects of the disclosed embodiments can be combined with or substituted for one another in order to form varying modes of the disclosed inventions. Thus, it is intended that the scope of at least some of the present inventions herein disclosed should not be limited by the particular disclosed embodiments described above.
| Number | Date | Country | |
|---|---|---|---|
| 61766640 | Feb 2013 | US |
