초록 ▼

A bed frame includes a base frame, an articulated support decks, an intermediate frame positioned between the base frame and the articulated support deck, and an auto-contour mechanism. The articulated support deck includes head, seat and foot deck portions. When engaged, the auto-contour mechanism

A bed frame includes a base frame, an articulated support decks, an intermediate frame positioned between the base frame and the articulated support deck, and an auto-contour mechanism. The articulated support deck includes head, seat and foot deck portions. When engaged, the auto-contour mechanism adjusts the elevation of the seat deck portion and the foot deck portion in response to an adjustment of the head deck portion. The auto-contour mechanism is easily engaged/disengaged by manipulating a control lever. The bed frame can include siderails which are provided with a latching mechanism. The bed frame can also include a caster assembly that allows casters to be pivoted in an engaged position in which the bed frame rests on the casters, and a disengaged position in which the bed frame rests on legs.

대표청구항 ▼

1. A caster assembly for a bed frame which comprises:casters which are coupled to support shafts; support bars which are rigidly attached to the support shafts and pivotally coupled to frame members of a bed frame; and locking bars which are movable between: a first position in which portions of the

1. A caster assembly for a bed frame which comprises:casters which are coupled to support shafts; support bars which are rigidly attached to the support shafts and pivotally coupled to frame members of a bed frame; and locking bars which are movable between: a first position in which portions of the locking bars engage the support bars and lock the support shafts in a vertical position; and a second position in which the locking bars are clear of the support bars so that the support shafts are free to pivot about the frame members, wherein each locking bar affects the engagement of support bars of at least a pair of the casters. 2. A caster assembly according to claim 1, wherein the support shafts include flanges which engage the frame members and limit the pivotal movement of the support bars.3. A caster assembly according to claim 1, wherein the locking bars include pedals by which the locking bars can be pivoted between the first and second positions.4. A caster assembly according to claim 3, wherein each pedal comprises a U-shaped member positioned at an end of the locking bar.5. A caster assembly according to claim 1, wherein the locking bars are rotatably coupled to the frame members of the bed frame.6. A caster assembly for a bed frame, the caster assembly comprising:a caster; a support shaft coupled to the caster; a support bar rigidly attached to one of the support shaft and a frame member of a bed frame, the support bar being pivotally coupled to the other of the support shaft and the frame member; a locking bar configured to move between a first position in which a portion of the locking bar engages the support bar and locks the support shaft in a locked position, and a second position in which the locking bar is clear of the caster, the support haft, and the support bar so that the support shaft is free to pivot in at least a first direct on about the frame member; and wherein the locking bar is configured to engage a pair of the support bars supported by a pair of the casters. 7. The caster assembly according to claim 6, wherein the support shaft includes at least one flange configured to engage the frame member and prevent pivotal movement of the support shaft in a second direction opposite the first direction.8. The caster assembly according to claim 6, wherein the locking bar includes a pedal by which the locking bar can be pivoted between the first position and the second position.9. The caster assembly according to claim 8, wherein the pedal comprises a U-shaped member positioned at an end of the locking bar.10. The caster assembly according to claim 6, wherein the locking bar is rotatably coupled to the frame member of the bed frame.11. A caster assembly comprising:a housing; a wheel rotatably supported by the housing; a support shaft coupled to the housing and supported for selective pivotal movement relative to a frame member of a bed frame; a support bar coupled to the support shaft; a locking bar configured to move between a first position in which the locking bar engages the support bar and the support shaft is prevented from pivoting movement in at least a first direction, and a second position in which the locking bar does not engage the wheel, the support shaft, and the support bar, such that the support shaft is capable of pivoting movement in at least a first direction toward the locking bar; and wherein the locking bar is configured to engage a pair of the support bars supported by a pair of the wheels. 12. The caster assembly according to claim 11, wherein the support shaft includes at least one flange configured to engage th frame member and prevent pivotal movement of the support shaft in a second direction opposite the first direction.13. The caster assembly according to claim 11, wherein the locking bar includes a pedal by which the locking bar can be pivoted between the first position and the second position.14. A caster assembly according claim 11, wherein the locking bar is rotatably coupled to the frame member of the be frame.15. A caster assembly for a bed including a support deck, a base frame, and an intermediate frame coupled to the base frame an configured to move vertically relative to the base frame, the caster assembly comprising:a caster; a support shaft coupled to the caster and coupled to the intermediate frame for pivotal movement relative to a ground surface between a lowered position and a raised position, wherein the support deck is supported by the intermediate frame when the support shaft is in the lowered position and the support deck is supported by the bas frame when the support shaft is in the raised position; and a locking member operably associated with the support shaft and configured to move between a first position in which the locking member is operably coupled to the support shaft to prevent the support shaft from pivotally moving in at least a first direction from the lowered position to the raised position, and a second position in which the locking member is not operably coupled to the support shaft to allow the support shaft to pivotally move in at least the first direction from the lowered position to the raised position as the intermediate frame is lowered until the base frame engages the ground surface. 16. The caster assembly according to claim 15, further comprising an engagement member operably associated with the support shaft and configured to prevent the support shaft from pivotally moving in a second direction opposite the first direction.17. The caster assembly according to claim 16, wherein the engagement member comprises at least one flange coupled to the support shaft.