Joint of a foldable bed for babies

Title: Joint of a foldable bed for babies

Related Patent Categories: Beds, Crib, Folding

Brief Patent Description - Full Patent Description - Patent Claims

The Patent Description & Claims data below is from USPTO Patent Application 20060021136, Joint of a foldable bed for babies.

1. A joint of a foldable bed for babies, comprising a main body having a curved top portion, and two side plates extending downwards from the curved top portion, and projecting beyond two ends of the curved top portion; two adjacent ones of rod parts of a frame of a bed being pivoted to two ends of the main body at inward ends thereof by means of first pivotal posts with the inward ends being held between the side plates; the rod parts having plane contact bottom sides on the inward ends thereof; a pressing block up and down movably held between the side plates of the main body; the pressing block having two engaging trenches on two sides facing respective ones of the two ends of the main body; a spring positioned between the top curved portion and a top of the pressing block for biasing the pressing block downwards to a lowermost position; and two supporting members held between the side plates and on two sides of the pressing block, and pivoted to the side plates; each supporting member having an engaging bar on a first end for engagement with a corresponding engaging trench on the pressing block; each supporting member having a bearing side formed on a second end substantially in an opposite direction of the first end for supporting the plane contact bottom side of a corresponding rod part on when the bed is in a stretched position; the supporting members having elastic plate portions above the engaging bars thereof; the supporting members being capable of being tightly pressed on respective ones of the engaging trenches at the engaging bars to prevent the pressing block from being moved up as soon as the rod parts are pressed against the bearing sides of the supporting members at the plane contact bottom sides owing to gravity after the bed has been stretched, and after the pressing block has been biased to the lowermost position by means of the spring; whereby the bed can be folded only after the pressing block is moved from the lowermost position to a substantially highest position to allow the supporting members to pivot such that the rod parts can pass the supporting members at the inward ends thereof.

2. A joint of a foldable bed for babies, comprising a main body having a curved top portion, and two side plates extending downwards from the curved top portion, and projecting beyond two ends of the curved top portion; two adjacent ones of rod parts of a frame of a bed being pivoted to two ends of the main body at inward ends thereof by means of first pivotal posts with the inward ends being held between the side plates; a first one of the side plates of the main body having a pair of first through holes equidistant to a middle thereof, and a pair of second through holes equidistant to the middle thereof; a pressing block up and down movably held between the side plates of the main body; the pressing block having two engaging trenches on two sides facing respective ones of the two ends of the main body; a spring positioned between the top curved portion and a top of the pressing block for biasing the pressing block downwards to a lowermost position; two supporting members held between the side plates and on two sides of the pressing block, and pivoted to the side plates; each supporting member having an engaging bar on a first end for engagement with a corresponding engaging trench on the pressing block; each supporting member having a bearing side formed on a second end substantially in an opposite direction of the first end for supporting the inward end of a corresponding rod part on when the bed is in a stretched position; the supporting members having elastic plate portions above the engaging bars thereof; and two plate members arranged next to an outer side of a first one of the side plates with a first side facing the first side plate; the plate members being connected to respective ones of the first pivotal posts at first ends thereof; each of the plate members having both a touching bump and a stopping bump on a second end of the first side; the touching bumps being higher than the stopping bumps; the touching bumps being respectively passed through the first through holes of the first side plate; the stopping bumps being respectively passed through the second through holes of the first side plate; when the bed is in a stretched position, the rod parts being capable of being pressed against the touching bumps so as to make the touching bumps and the stopping bumps retreat from the inner side of the first side plate of the main body; the supporting members being capable of being tightly pressed on respective ones of the engaging trenches at the engaging bars to prevent the pressing block from being moved up as soon as the rod parts are pressed against the bearing sides of the supporting members at the inward ends thereof owing to gravity after the bed has been stretched, and after the pressing block has been biased to the lowermost position by means of the spring, whereby the bed can be folded only after the pressing block is moved from the lowermost position to a substantially highest position to allow the supporting members to pivot such that the rod parts can pass the supporting members at the inward ends thereof; while the rod parts are being angularly displaced relative to the main body towards an upright position to fold the bed after the pressing block has been pushed to the substantially highest position, the inward ends of the rod parts being capable of making the second ends of the supporting members move down together with them, thus allowing the stopping bumps to stop the second ends of the supporting members from moving up immediately after the second ends of the supporting members and the inward ends of the rod parts pass the stopping bumps, and thus allowing the supporting members to hold the pressing block on the first ends thereof so as to prevent the pressing block from moving down from the substantially highest position.

3. The joint as claimed in claim 2, wherein the pressing block has two stopping protrusions under respective ones of the engaging trenches, which stopping protrusions will come into contact with the first ends of the supporting members for upward movement of the pressing block to be stopped as soon as the block is moved to the highest position.

4. The joint as claimed in claim 2, wherein the plate members have recesses over middle portions of the first sides thereof such that the middle portions are thinner, and the plate members are flexible.

5. The joint as claimed in claim 4, wherein the plate members have contacting bumps on the first side of the first end, which are pressed against the first side plate, such that the second ends of the plate members are tightly pressed against the first side plate.

6. The joint as claimed in claim 2, wherein the first side plate has fitting holes on two ends thereof, and the plate members have locating bumps on the first side of the first end, which are through the fitting holes of the first side plate.

7. The joint as claimed in claim 6, wherein the plate members have contacting bumps on the first side of the first end, which are pressed against the first side plate, such that the second ends of the plate members are tightly pressed against the first side plate.

8. The joint as claimed in claim 2, wherein the plate members have contacting bumps on the first side of the first end, which are pressed against the first side plate, such that the second ends of the plate members are tightly pressed against the first side plate.

9. The joint as claimed in claim 2, wherein two protecting plates are respectively secured on two ends of the curved top portion of the main body by means of fixing elements.

10. The joint as claimed in claim 1, wherein the pressing block has two stopping protrusions under respective ones of the engaging trenches, which stopping protrusions will come into contact with the first ends of the supporting members for upward movement of the pressing block to be stopped as soon as the block is moved to the highest position.

11. The joint as claimed in claim 1, wherein two protecting plates are respectively secured on two ends of the curved top portion of the main body by means of fixing elements.

Brief Patent Description - Full Patent Description - Patent Claims

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Collapsible play yard
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Industry Class:
Beds

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