A kind of folding bedstead

Technical Field

The invention relates to a kind of folding bedstead.

Background Art

The folding beds available at market include several "cross" folding frames, in which, the ends of the adjacent "cross" folding frames are pivot-connected, enabling the bedstead to be unfolded from the center to outside or folded from the outside to the center, and to occupy a small space when folded. However, the defects of such bedsteads lie in that the bedstead, when unfolded and used, provides only the point-support to the mattress (such as air mattress), leading to an easy damage to the mattress and to a bedstead structure instability.

US 6,581,223 discloses a foldable frame assembly that includes a plurality of parallel frame members, each of which has left and right columns. A plurality of coupling units are alternately disposed with the frame members, and each includes first left and right connecting rods and second left and right connecting rods. Each of the first left and right connecting rods has a first upper rod end that is pivoted to the upper column end of a respective one of the left and right columns of one of two adjacent ones of the frame members, and a first lower rod end that is opposite to the first upper rod end. Each of the second left and right connecting rods has a second upper rod end that is pivoted to the upper column end of a respective one of the left and right columns of the other one of the two adjacent ones of the frame members, and a second lower rod end that is opposite to the second upper rod end and that is pivoted to the first lower rod end so as to permit folding and unfolding of the frame members relative to one another in the longitudinal direction.

According to the present invention there is provided a kind of folding bedstead as claimed in the appended claims.

This present invention provides a kind of folding bedstead, which has eliminated the defects of the existing folding bedsteads of easy mattress damage and instable bedstead structure.

According to an aspect of the invention a folding bedstead is provided as claimed in claim 1.

According to another aspect of the invention a folding bedstead is provided as claimed in claim 2. Preferred features of the invention are set out in the dependent claims.

Description of figures

Further description is made of this utility model in combination with the figures and embodiment examples. Figures 7-9 are merely illustrative examples helping to understand the invention.

• Figure 1 is a stereo diagram of the folding bedstead in No. 1 example which is in a fully unfolded status.
• Figure 2 is a stereo diagram of the folding bedstead in No. I example which is in a half-folded status.
• Figure 3 is a stereo diagram of the folding bedstead in No. 1 example which is in a fully folded status.
• Figure 4 is a stereo diagram of the folding bedstead in No. 2 example which is in a fully unfolded status.
• Figure 5 is a stereo diagram of the folding bedstead in No. 2 example which is in a half-folded status.
• Figure 6 is a stereo diagram of the folding bedstead in No. 2 example which is in a fully folded status.
• Figure 7 is a stereo diagram of the air bed in No. 3 example which is in a fully unfolded status.
• Figure 8 is a stereo diagram (1) of the air bed in No. 4 example which is in a fully unfolded status.
• Figure 9 is a stereo diagram (2) of the air bed in No. 4 example which is in a fully unfolded status.

Mode of Embodiment

No. 1 Embodiment Example

Please see Figs 1, 2 and 3. The folding bedstead comprises two left-right paralleled rows of legs and the general plane frame.

The legs in each row are of two types: one is the first leg 10, which is a two-section retractable one that comprises the first external tube 11 and the first internal tube 12 sliding-connected in the external tube 11. The first lower pivot receptacle is provided at the bottom end of the first external tube 11, the first intermediate pivot receptacle at the top end of the first external tube 11 and the first upper pivot receptacle at the top end of the first internal tube 12; the other is the second tube 20, which is a three-section retractable one that comprises the second external tube 21, the intermediate tube 22 sliding-connected in the second external tube 21 and the second internal tube 23 sliding-connected in the intermediate tube 22. The second lower pivot receptacle is provided at the bottom end of the second external tube 21, the second intermediate pivot receptacle at the top end of the intermediate tube 22 and the second upper pivot receptacle at the top end of the second internal tube 23.

Each row of legs includes three first legs 10 and two second legs 20 and the said three first legs 10 and two second legs 20 are arranged alternatively. Each pair of the adjacent front-back first leg 10 and the second leg 20 in each row are connected with a "cross" folding frame 30, whose two lower ends are connected respectively with the first lower pivot receptacle at the bottom end of the first external tube 11 and the second lower pivot receptacle at the bottom end of the second external tube 21, whose upper ends are connected respectively with the first upper pivot receptacle at the top end of the first internal tube 12 and the second middle pivot receptacle at the top end of the intermediate tube 22.

According to the need, the left-right corresponding legs of the two rows of legs are connected with a "cross" folding frame between them, and a horizontal beam 14 is fixed between the first middle pivot receptacles at the top end of the first external tubes 11 of the two first legs 10 and another horizontal beam 24 is fixed between the second upper pivot receptacles at the top end of the second internal tubes 23 of the two second legs 20.

The general plane frame includes four sub-plane frames 40 comprising two longitudinal beams 41 and at least one horizontal beam 42 fixed between the two horizontal beams 41.

If necessary, short reinforcing members can be fixed between two horizontal beams 42. The both ends of the longitudinal beams 41 are pivot-connected correspondingly to the first middle pivot receptacle at the top end of the first external tube 11 of the first leg 10 and the second upper pivot receptacle at the top end of the second internal tube 23of the second leg 20. The tandem pivot-connection of the first and the second upper pivot receptacles enables the four sub-plane frames 40 to form an organ-type folding.

No.2 Embodiment Example

Please see Figs 4, 5 and 6. The folding bedstead comprises two left-right paralleled rows of legs and the general plane frame.

The legs in each row are of two types: one is the first leg 10, which is un-retractable and is provided with the first lower pivot receptacle at the bottom end and the first upper pivot receptacle at the top end; the other is the second leg 20, which is a three-section retractable one that comprises the second external tube 21, the intermediate tube 22 sliding-connected in the second external tube 21 and the second internal tube 23 sliding-connected in the intermediate tube 22. The second lower pivot receptacle is provided at the bottom end of the second external tube 21, and the second upper pivot receptacle at the top end of the second internal tube 23.

Each row of legs includes three first legs 10 and two second legs 20 and the said three first legs 10 and two second legs 20 are arranged alternatively.

According to the need, the left-right corresponding legs of the two rows of legs are connected with a "cross" folding frame between them, and a horizontal beam 14 is fixed between the first upper pivot receptacles at the top end of the two first legs 10 and another horizontal beam 24 is fixed between the second upper pivot receptacles at the top end of the second internal tubes 23of the two second legs 20.

The general plane frame includes four sub-plane frames 40 comprising two longitudinal beams 41 and at least one horizontal beam 42 fixed between the two longitudinal beams 41.

If necessary, short reinforcing members can be fixed between two horizontal beams 42.

The both ends of the longitudinal beams 41 are pivot-connected correspondingly to the first upper pivot receptacle at the top end of the first leg 10 and the second upper pivot receptacle at the top end of the second internal tube 23 of the second leg 20. The tandem pivot-connection of the first and the second upper pivot receptacles enables the four sub-plane frames 40 to form an organ-type folding.

No.3 Illustrative Example

Please see Fig. 7. This example is a kind of air bed comprising an air mattress 50 and a folding bedstead. The air mattress 50 comprises a mantle and an inflation internal core.

The mantle is provided with a closable opening, enabling the client to either put the inflation core in the mantle or to take it outside the mantle according to the need. The folding bedstead is as described in No. I Embodiment Example. The said mantle is connected on the first and second pivot receptacle of the bedstead.

No.4 Illustrative Example

Please see Figs. 8 and 9. This example is a kind of sectional air bed comprising two air mattresses 50 and two folding bedsteads. The said air mattress 50 comprises a mantle and an inflation internal core. The mantle is provided with a closable opening, enabling the client to either put the inflation core in the mantle or to take it outside the mantle according to the need. The folding bedstead structure is different from that in No. 1 Embodiment Example in that: a clamp is provided on the pivot receptacle on the side of a folding bedstead and a buckle is provided on the pivot receptacle on the corresponding side of another folding bedstead, and the clamp and the buckle form a detachable buckle structure and a rotatable connection when integrated with each other. The mantles of the two said air mattresses 50 are connected respectively on the two folding bedsteads.

No. 5 Embodiment Example

This example is a kind of folding bed comprising four supportive mattresses that are fixed on the sub-plane frames and a folding bedstead that is as described in No. 1 or No. 2 example.

No. 6 Illustrative Example

This example is different from the No. 5 one in that: the said supportive mattresses are the sub-plane frames.