Collapsible play yard
The play yard has a hub movable between a raised position and a lowered position, with at least two lower rods pivotally joined to the hub, wherein when the hub is lifted toward the raised position, the outer ends of the lower rods move together so as to be substantially parallel, and when the hub is pushed toward the lowered position from the raised position, the outer ends of the lower rods are pushed away from each other until the rods lie substantially in a common plane. The play yard also has an upper frame with upper frame rods substantially parallel to the lower rods when the hub is in the lowered position. Finally, the play yard has at least one of the upper frame rods pivotable between a raised and lowered position, the pivoting axis being substantially perpendicular to an axis of the vertical rails.
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This application is a Continuation in Part Application of a patent application for a Collapsible Play Yard, filed Jul. 30, 2004 (Ser. No. ______ not yet assigned).
FIELD OF INVENTIONThe field of the invention generally is collapsible play yards or playpens and more particularly to releasable locking mechanisms for such collapsible devices.
BACKGROUNDA collapsible play yard provides a portable but stable structure in which a small child can play and sleep. The essential features for such a structure is that it be (1) lightweight enough to carry by one person, (2) easy to set up, and (3) stable enough to safely support the child. An example of a portable play yard is shown in U.S. Pat. No. 4,811,437 to Dillner et al.
The Dillner play yard uses a center hub about which the uprights of the play yard are pivoted. The hub employed in the Dillner play yard is a complex device and the need exists for a simpler center hub design.
Similarly, Dillner provides a play yard having upper rails comprised of several moving parts and a need exists for a simpler upper rail design.
SUMMARYThe foldable play yard overcomes the drawbacks of the prior art. The play yard has a hub movable between a raised position and a lowered position, with at least two lower rods pivotally joined to the hub, wherein when the hub is lifted toward the raised position, the outer ends of the lower rods move together so as to be substantially parallel, and when the hub is pushed toward the lowered position from the raised position, the outer ends of the lower rods are pushed away from each other until the rods lie substantially in a common plane. The play yard also has an upper frame with upper frame rods substantially parallel to the lower rods when the hub is in the lowered position. Finally, the play yard has at least one of the upper frame rods pivotable between a raised and lowered position, the pivoting axis being substantially perpendicular to an axis of the vertical rails.
BRIEF DESCRIPTION OF THE DRAWING(S)
Starting from the fully erected frame shown in
Once the releasable center hub 50 and locking mechanisms 200 are unlocked, raising the center hub 50 draws the four base frame rods 32 upward. The base frame rods are each pivotally mounted at one end to an associated structure 52, 52 forming part of the center hub 50, and at the other end to an associated one of the lower corner pieces 34. As the base frame rods 32 are drawn upward (
Structures 52 each have an integral hollow support arm 64 for receiving overlapping ends of an associated pair of base frame rods 32. The ends of rods 32 each have a cutout 32a so that they closely overlap one another and can pivot independent of to one another when held to an associated hollow arm 64 by pivot pin 60. When the center hub 50 is pulled upward in the direction of arrows, the vertical rails 24 are drawn inward due to movement of the ends of base frame rods 32, mounted to lower brackets 34, which move towards each other.
Each structure 52 is comprised of a pair of spaced apart gear sectors 53a, 53b. Sector gears 53a, 53a of the structures 52 are diagonally opposed to one another and gear sectors 53b, 53b are likewise diagonally opposed to one another. Gear sectors 53a, 53a each have a shoulder 79 and the gear sectors 53b each have a shoulder 78-78. The shoulders 78-78 are each closer to a vertical axis which coincides with arrow A in
The locking member 58 is held against axial movement within the central piece 54 by bolt 68 and nut 70 while being capable of rotating about the vertical axis. A tab 72 is integrally joined to locking member 58. Distance D1 between ends 72a-72b is greater than the distance D2 between ends 72c-72d. Tab 72 is positioned beneath side guides 74, 74. The opposite ends 72c, 72d of tab 72 are engaged by shoulders 78-78 when the hub 50 is lowered to the erected position to prevent hub 50 from being accidentally unlocked and to thereby secure the locking button 58 in a locked position (shown in
With the hub 50 in the lowered position, the spring-biased tab 72 rotates counter-clockwise until ends 72a, 72b each engage an associated shoulder 78, 78. Once opposing surfaces 72c, 72d of tab 72 each engage an associated shoulder 78, the gear structures 52 cannot rotate in either direction about pins 66 because tab 72 is prevented from rotating by shoulders 78, 78, retaining the tab in a locked position. This is best seen in
To release the gear structures 52 so they can rotate, the locking member is turned clockwise, preferably by gripping curved wire handle 80. The gear sector structures 52 include diagonally opposed clearance shoulders 79, 79 that provide sufficient clearance for tab 72, allowing the tab 72 to rotate in the clockwise direction. When the tab 72 is so rotated, opposite ends 72c, 72d of tab 72 each enter into one of the gap spaces 82 between the opposing pairs of gear sectors wheels 53a-53b. Once the ends 72c, 72d of tab 72 each enter into one of the gap spaces 82, the blocking surfaces 79a, 79a, 78a, 78a are clear of tab 72, enabling structures 52, 52 to rotate freely about their associated pivots 66 allowing hub 50 to be lifted to its raised position shown in
As is best seen in
The locking mechanism 200 comprises mounting bracket 202, a locking wedge 204, a locking spring 206, a push button 208, and a cover 210. The bracket 202 optionally has a pin 212 and a spacer/bushing 214 that provide structural support: the bushing 214 fills the gap between opposing walls W1-W2 of bracket 202, and thus inhibits their movement towards or away from each other when under stress.
The push button 208 and locking wedge 204 engage one another in a threaded, snap-fit, or other secure arrangement. The arm 205 of wedge 204 extends through spring 206, which spring has one end 206a which presses against the push button 208 and an end 206b secured to the projection 203 of bracket of 202. When assembled as shown in
In the locked position (
To unlock the upper horizontal rails for folding, the protrusion 220 and the recess 222 must first be disengaged so that the push button 208 can be depressed. Prior to this disengagement, the push button 208 cannot be depressed because of the engagement of the protrusion 220 and recess 222. In practice, this disengagement is accomplished by lifting the bracket 202 slightly, which swings each protrusion 220 upward and away from its associated recess 222. To unlock the mechanism 200, the push button 208 is pressed in to by a distance sufficient to assure that the wedge 207 is clear of the path of movement of the cutout 218 as each rod 28 rotates about its associated pin 216.
Vertical arm 24 is force-fitted into bore 403 of corner piece 34. Arm 24 has an integral tab 24a which is normally biased in an outward radical direction and which snap-fits against an upper edge 404a in opening 404 in corner piece 34 when the rod 24 is pushed into bore 403 by an amount sufficient to clear edge 404a of opening 404. Rod 24 may be removed from lower corner piece 34 by pressing tab 24a inwardly sufficient to clear edge 404a. Foot 405 is preferably provided with a “tread” to provide a non-slip grip with a surface supporting the play yard.
Several alternate embodiments of the play yard will now be described.
FIGS. 4A-C show a play yard frame having rails or legs 24 that include a telescoping rail portion 25 that extends therefrom to lengthen the legs, and thereby increase the overall height of the play yard. The legs are lengthened by pulling the telescoping leg portion 25 out from the leg 24 until the push-button 27 engages hole 29 in leg 24. Cross-section
Although one extendible position is shown in
The advantage of the extendible legs is twofold. First, it allows the play yard to have an even more compact folded form. Second, the play yard's height can be adjusted, which is particularly important if the portable play yard is used as a bedside bassinet (see below).
As is best seen in
At each position, the arm 528 is locked in place. In the raised position, pin 530 engages hole 532 on corner piece 540, and in the lowered position, pin 530 engages hole 534 on rail 24 (note that the hole 534 is shown within the rail 18, although in practice, it may be preferred that the hole 534 is contained within a thickened portion of the rail 18 or an extension from the rail 18). The pin 530 extends from locking corner piece 550, which comprises a fixed portion 552 and a sliding portion 554. The sliding portion 554 moves parallel to the axis of the arm 528 as shown in phantom in
Having described the frame, now the enclosure 514 mounted on the frame will be described in more detail. As best seen in
When the fold-down arm 528 is in the lowered position as shown in
When the arm 528 is in the lowered position, as shown in
When used as a bedside sleeper, front flap 602 can slide under a mattress of a parental bed. The adjustable leg feature discussed above allows the height of the bedside sleeper to be adjusted for mattresses with different heights. This is important since the height of a top surface of a parental mattress cannot be known in advance.
Claims
1. A foldable enclosure, comprising:
- a) a hub movable between a raised position and a lowered position, comprising: i) a pair of structures, each rotatably mounted upon pivots extending through a common bracket wherein sector gears of each structure engage each other causing the structures to rotate in unison about their respective axes; and ii) a means for locking mounted upon the common bracket that moves between a locked position that prevents rotation of said structures about their respective axes and a released position that allows rotation of said structures their respective axes; iii) at least two rods each pivotally joined to an associated one of said structures;
- b) an upper frame having an open position wherein the upper frame forms a rigid perimeter around a first area and a collapsed position wherein the upper frame forms a perimeter around a second area;
- c) vertical rails joining the upper frame and the rods, said vertical rails having a telescoping rail that extends therefrom to increase the distance between the upper frame and the rods; and
- d) a flexible enclosure joined to the upper frame and vertical rails;
- e) wherein when the lock button is moved to an upper unlocked position, and the hub is lifted toward the raised position, the rods are moved together to be substantially parallel, and when the hub is pushed into the lowered position from the raised position, the toothed structures rotate about their axes and the rods are pushed away from each other until the rods are substantially in planar alignment;
- f) wherein when the rods are in planar alignment, the locking button can be moved to its locked position which prevents accidental movement of the hub from the lowered position to the raised position; and
- g) wherein when the hub is in the lowered position and the upper frame is in the open position, the flexible enclosure forms a flexible wall and floor that encloses and defines a volume with an open top.
2. The foldable enclosure of claim 1 wherein each telescoping rail engages the complementary vertical rail using a push-button that extends from the telescoping rail through a hole in the vertical rail.
3. The foldable enclosure of claim 1 wherein the vertical rail has multiple holes that can engage the push-button and thereby adjust the distance between the upper frame and the rods.
4. A foldable play yard comprising:
- a) a hub movable between a raised position and a lowered position, comprising at least two lower rods pivotally joined to the hub, wherein when the hub is lifted toward the raised position, the outer ends of the lower rods move together so as to be substantially parallel, and when the hub is pushed toward the lowered position from the raised position, the outer ends of the lower rods are pushed away from each other until the rods lie substantially in a common plane;
- b) an upper frame comprising a plurality of upper frame rods substantially parallel to the lower rods when the hub is in the lowered position; and
- c) at least one of the upper frame rods being pivotable between a raised and lowered position, the pivoting axis being substantially perpendicular to an axis of the vertical rails.
5. The foldable play yard of claim 4 wherein the at least one pivotable rod has at least one locking piece attached to an end thereof that matingly engages a corner piece attached to an upper frame rod and a vertical rail, the mating engagement of the locking piece and the corner piece preventing the at least one pivotable rod from pivoting between from the raised to the lowered position.
6. The foldable play yard of claim 5 wherein the locking piece comprises a pin that extends therefrom, the pin movable between extended and retracted positions, the pin engaging a corresponding hole in the corner piece when in the extended position to provide the mating engagement.
7. The play yard of claim 6 wherein the pin is movable between the extended and retracted positions in cooperation with the sliding portion of the locking piece.
8. The play yard of claim 6 wherein, when the at least one pivotable rod is in the lowered position, the pin, in the extended position, is engageable to a second hole.
9. The play yard of claim 8, wherein the second hole is located on a portion of the corner piece that extends over the vertical rail.
10. The play yard of claim 4 wherein said vertical rails have within them a telescoping rail that extends therefrom to increase the distance between the upper frame and the rods.
11. The play yard of claim 4, further comprising a flexible enclosure having sidewalls and a bottom that define an area in which a child can play or sleep.
12. The play yard of claim 11 wherein the flexible enclosure further comprises sleeves that contain at least in part, the vertical rails, and wherein the sidewalls extend between the vertical rails.
13. The play yard of claim 12 wherein the sleeves partially contain the upper frame rods.
14. The play yard of claim 5 further comprising a flexible enclosure comprising:
- sidewalls and a bottom that define an area in which a child can play or sleep, wherein a first sidewall has a first flap and a second sidewall has a second flap, the flaps forming a corner of the enclosure at the mating engagement between the locking piece and the corner piece; and
- sleeves that contain at least in part, the vertical rails, and wherein the sidewalls extend between the vertical rails.
15. The play yard of claim 14 wherein the flaps extend above a top of at least one sleeve.
16. The play yard of claim 14 wherein the flaps matingly engage to form a seam therebetween.
17. The play yard of claim 14 wherein the flaps matingly engage using a Velcro® connection.
18. The play yard of claim 14 further comprising
- a slot attached to a rail,
- a first Velcro® tab attached to the first flap that passes through the slot and matingly engages a complementary Velcro® tab on the first flap.
19. The play yard of claim 18 wherein the first flap further comprises a second Velcro tab that matingly engages a complementary Velcro® tab on the second flap.
20. The play yard of claim 18 wherein the first flap further comprises a second Velcro® tab that passes through the slot and matingly engages a complementary Velcro® tab on the second flap.
21. The play yard of claim 14 further comprising a bassinet addition supported by the upper frame and comprises four sides and a bottom contained substantially within the enclosure, the bassinet bottom being substantially parallel with the enclosure bottom.
22. The play yard of claim 21 wherein the bassinet addition comprises snaps that engage corresponding snaps on the upper frame.
23. The play yard of claim 21 wherein the bassinet addition comprises clips that engage the upper frame.
24. The play yard of claim 21 wherein the bassinet addition engages the enclosure in a Velcro® connection outside the enclosure.
25. The play yard of claim 21 wherein the bassinet addition comprises exterior sides that extend outside the enclosure.
26. The play yard of claim 25 wherein at least one of the four sides is configured to be folded down.
27. The play yard of claim 26 wherein the at least one side engages two of the remaining sides in a Velcro® connection.
28. The play yard of claim 26 wherein clips on the at least one side engage the at least one pivotable arm in the lowered position.
Type: Application
Filed: Aug 16, 2004
Publication Date: Feb 2, 2006
Applicant: Simplicity, Inc. (Reading, PA)
Inventors: Kenneth Waldman (Reading, PA), Jerome Drobinski (Reading, PA)
Application Number: 10/918,893
International Classification: A47D 13/06 (20060101); A47C 7/00 (20060101);