CN105815961B

CN105815961B - Foldable bedstead

Info

Publication number: CN105815961B
Application number: CN201510929864.6A
Authority: CN
Inventors: 黄长久
Original assignee: Lupuda Xiamen Outdoor Products Co ltd
Current assignee: Lupuda Xiamen Outdoor Products Co ltd
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2021-08-20
Anticipated expiration: 2035-12-15
Also published as: CN105815961A

Abstract

The invention discloses a foldable bedstead which comprises at least two parallel cross rods and two end supporting frames, wherein the end supporting frames are connected with the end parts of the same sides of the at least two cross rods, each end supporting frame comprises a scissor fork, the end parts of the same sides of every two adjacent cross rods are connected through the scissor forks, a supporting rod is connected onto the end supporting frames, a sliding piece is connected onto the supporting rod in a sliding mode, a driving rod is pivoted onto the end supporting frames, one end of the driving rod is pivoted onto the sliding piece, so that the distance motion between the cross rods and the opening and closing motion of the scissor forks are linked with the sliding piece in a sliding mode, a connecting rod is pivoted onto the cross rods, one end of the connecting rod is pivoted onto the sliding piece, and the sliding piece is linked with the opening and closing motion between the end supporting frames and the cross rods. It has the following advantages: the bed frame is convenient to open or fold; the bed frame has high supporting firmness, increases the supporting strength and stability of the bed frame, and can increase the smoothness of opening or folding the bed frame.

Description

Foldable bedstead

Technical Field

The invention relates to a foldable bed frame.

Background

Chinese patent database grant publication 200820237601. An integrated folding bed comprises a bed surface and a bed frame, wherein the bed frame consists of a middle support frame and two side support frames, the middle support frame comprises two middle vertical pipes, two middle inclined pipes and two middle support legs, the upper end of each middle vertical pipe is provided with a middle hinge, a telescopic rod is arranged in the lower end of each middle vertical pipe, the lower end of each telescopic rod is fixedly connected with the middle support leg, the upper end of each middle inclined pipe is hinged with the upper end of one middle vertical pipe, the lower end of each middle inclined pipe is hinged with the middle support leg below the other middle vertical pipe, and the two middle inclined pipes are mutually crossed and hinged at the crossed part; the side bracket comprises a horizontal pipe, side vertical pipes, side inclined pipes, a connecting pipe and side supporting feet, wherein one end of the horizontal pipe is hinged to a middle hinge, the other end of the horizontal pipe is provided with an outer hinge, the upper end of each side vertical pipe is provided with one side hinge and is hinged to the horizontal pipe through the side hinge, the lower end of each side vertical pipe is fixedly connected with the side supporting feet, the vertical pipe is further sleeved with a sliding sleeve, the sliding sleeve is hinged to the connecting pipe, the other end of the connecting pipe is hinged to the horizontal pipe, the hinged position is located between the side hinge and the outer hinge, the upper end of each side inclined pipe is in universal connection with one outer hinge, the lower end of each side supporting foot is in. It has the defects of poor supporting strength and poor stability.

Disclosure of Invention

The invention provides a foldable bedstead which overcomes the defects of the foldable bedstead in the background technology.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a foldable bed frame comprises at least two parallel cross bars (10) and two end support frames (20), the end support frame (20) is connected with the ends of the at least two cross rods (10) at the same side, the end support frame (20) comprises scissors forks (21), the ends of the two adjacent cross rods (10) at the same side are connected through the scissors forks (21), the end support frame (20) is connected with a stay bar (22), the stay bar (22) is connected with a sliding piece (23) in a sliding way, the end support frame (20) is pivoted with a driving rod (24), one end of the driving rod (24) is pivoted with a sliding piece (23), so that the distance movement between the cross rods (10) and the stretching and retracting movement of the scissors (21) are linked with the sliding piece (23) in a sliding way, the cross bar (10) is pivoted with a connecting rod (25), the tail end of the connecting rod (25) is pivoted with a sliding piece (23), so that the sliding piece (23) slides to form linkage with the stretching and retracting movement between the end support frame (20) and the cross bar (10).

In one embodiment: the end support frame (20) further comprises a rotating piece (26) connected with the top end of the scissors fork (21) and the end part of the cross rod (10) and a base (27) correspondingly located below the rotating piece (26) and pivoted with the bottom end of the scissors fork (21), and the support rod (22) is a telescopic rod and is connected between the corresponding rotating piece (26) and the base (27).

In one embodiment: the rotating piece (26) and the base (27) are respectively fixedly connected to the upper end and the lower end of the stay bar (22), the top end of the scissor fork (21) is pivoted on the rotating piece (26), and the rotating piece (26) is pivoted on the end of the cross bar (10).

In one embodiment: the end support frame (20) further comprises a rotating piece (26) connected with the top end of the scissors fork (21) and the end part of the cross rod (10) and a base (27) correspondingly located below the rotating piece (26) and pivoted with the bottom end of the scissors fork (21), the support rod (22) is connected between the corresponding rotating piece (26) and the base (27), the upper end of the support rod (22) is connected with the rotating piece (26), and the lower end of the support rod can slide relative to the base (27).

In one embodiment: the other end of the link (25) is pivotally connected to the non-end of the cross bar (10).

In one embodiment: each cross bar (10) is connected with a stay bar (22), a slide piece (23), a driving rod (24) and a connecting rod (25) in a matching way.

In one embodiment: the other end of the driving rod (24) is pivoted on the scissors fork (21).

In one embodiment: in the two adjacent crossbars (10): the middle part of the driving rod (24) is pivoted on the scissors fork (21), the tail ends of the driving rods (24) corresponding to the two adjacent cross rods (10) are pivoted together, and the driving rods (24) and the scissors fork (21) form a parallelogram mechanism.

In one embodiment: the scissors fork (21) comprises two legs pivotally connected together, and the pivotal connection of the two drive levers (24) is located below the pivotal connection of the two legs.

In one embodiment: the scissors fork (21) comprises two support rods which are pivoted together, the sliding piece (23) is matched with two driving rods (24), one end of each driving rod (24) is pivoted on the sliding piece (23), and the other end of each driving rod is respectively pivoted on two support rods of the scissors fork (21).

In one embodiment: the end support frame (20) comprises two scissors forks (21), and the scissors forks (21) comprise two support rods which are pivoted together; the tail end of one support rod of one scissors fork (21) is pivoted with the tail end of one support rod of the other scissors fork (21); the middle part of the driving rod (24) is pivoted on the scissors fork (21), and the other ends of the two driving rods (24) are respectively pivoted at the tail ends of the other supporting rods of the two scissors forks (21); the driving rod (24) and the scissors fork (21) form a parallelogram mechanism.

In one embodiment: each cross bar (10) comprises a straight bar (12) with two ends pivoted to a middle seat (11), and the middle seats (11) of every two adjacent cross bars (10) are connected together through another scissors fork (13).

In one embodiment: the end support frame (20) is provided with a locking structure (28) which is used for locking the end support frame (20) in an opening state and can be released in locking.

Compared with the background technology, the technical scheme has the following advantages:

the end support frame is connected with a stay bar, the stay bar is connected with a sliding piece in a sliding way, the driving rod is pivoted on the end support frame, one end of the driving rod is pivoted on the sliding piece, the sliding piece is pivoted with a connecting rod, the connecting rod is pivoted on a cross rod, the distance motion between the cross rods and the scissor fork stretching and retracting motion and the sliding piece sliding form linkage, the sliding piece sliding and the stretching and retracting motion between the end support frame and the cross rods form linkage, not only is the bedstead conveniently opened or folded, but also the end support frame is connected to the end part of the cross rod, the stay bar, the connecting rod and the driving rod are arranged, the supporting firmness is high, the supporting strength.

The vaulting pole is the telescopic link and connects between rotation piece and the base that corresponds, and support intensity when increasing the bedstead and opening.

The other end of the driving rod is pivoted on the scissors fork, so that the material consumption is saved, and the driving rod is prevented from interfering with bed cloth or an inflatable mattress.

The middle part of the driving rod is pivoted on the scissors fork, the tail ends of the driving rods corresponding to the two adjacent cross rods are pivoted together, and the driving rod and the scissors fork form a parallelogram mechanism with high strength.

The scissors fork comprises two support rods which are pivoted together, and the pivoting parts of the two driving rods are positioned below the pivoting parts of the two support rods, so that the interference of bed cloth or an inflatable mattress is avoided.

The slider is connected with two driving rods, one end of each driving rod is pivoted on the slider, and the other end of each driving rod is pivoted on two support rods of the scissors fork, so that the strength is high.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is a perspective view of a foldable bed frame according to an embodiment, wherein the bed frame is in an open state.

Fig. 2 is a schematic perspective view of a foldable bed frame according to a second embodiment, in which the bed frame is in a first folding process.

Fig. 3 is a third schematic perspective view of a foldable bed frame according to the embodiment, in which the bed frame is in a second folding process.

Fig. 4 is a fourth schematic perspective view of the foldable bed frame according to the embodiment, wherein the bed frame is in a third folding process.

Fig. 5 is a schematic perspective view of a foldable bed frame according to a fifth embodiment, wherein the bed frame is in a folded state.

Fig. 6 is a partially exploded perspective view of a foldable bed frame according to an embodiment.

Fig. 7 is a perspective view of a foldable bed frame according to an embodiment.

Fig. 8 is a perspective view of the three foldable bed frame of the embodiment.

Fig. 9 is a perspective view of an embodiment four foldable bed frame.

Fig. 10 is a perspective view of the five foldable bed frame of the embodiment.

Fig. 11 is a perspective view of an embodiment six foldable bed frame.

Fig. 12 is a perspective view of an embodiment of a seven foldable bed frame.

Fig. 13 is a perspective view of an example eight foldable bed frame.

Fig. 14 is a partially exploded perspective view of the frame according to the eighth embodiment.

Fig. 15 is a perspective view of the ninth foldable bed frame of the embodiment.

Fig. 16 is a partially exploded perspective view of the frame according to the ninth embodiment.

Fig. 17 is a schematic perspective view of the ten-fold frame according to the embodiment, in which the button is exploded.

Detailed Description

Example one

Referring to fig. 1 to 6, the foldable bed frame includes two side-by-side rails 10 and two end supports 20.

Each cross bar 10 comprises a straight bar 12 with two ends pivoted to a middle seat 11, the middle seats 11 of the two cross bars 10 are connected together through a second scissors fork 13, a telescopic tube 14 is arranged between the upper end and the lower end of the second scissors fork 13, the second scissors fork 13 of the forehead comprises two second support bars with the middle pivoted together, and the top ends of the two second support bars are pivoted to the middle seats 11 of the two cross bars 10. During folding, the two straight rods 12 of the cross bar can rotate relative to the middle base 11 to abut together for folding or rotate to be linearly arranged for opening, as shown in fig. 3, 4 and 5.

One end of the two cross bars 10 is connected to a supporting frame 20, and the other end of the two cross bars 10 is connected to another supporting frame 20.

The end support 20 includes a first scissors 21, and the first scissors 21 includes two first struts pivotally connected together at the middle. The ends of the two adjacent cross bars 10 on the same side are connected by a first scissors 21, and the number of the first scissors 21 may be one or more, if necessary, a plurality of scissors 21 are arranged in series and the ends of the adjacent first cross bars are pivoted together. In the concrete structure: the end support 20 further comprises a pivoting member 26 connecting the top end of the scissors 21 and the end of the crossbar 10, and a base 27 pivotally connected to the bottom end of the scissors 21 and located below the pivoting member 26, the top end of the scissors 21 is pivotally connected to the pivoting member 26, the pivoting member 26 is pivotally connected to the end of the crossbar 10, preferably, the frame is in an open state, as shown in fig. 1, the scissors are perpendicular to the crossbar.

At the end of each cross bar 10 in each end support 20, there are coupled a stay 22, a slider 23, a drive rod 24 and a link 25. The stay 22 is a telescopic rod and is connected between the corresponding rotating member 26 and the base 27, and in the specific structure, the rotating member 26 and the base 27 are respectively and fixedly connected to the upper and lower ends of the stay 22.

The slider 23 is slidably connected to the stay 22. The middle of the driving rod 24 is pivotally connected to the first rod of the first scissors 21. The first end of the driving rod 24 is pivoted to the slider 23. The second ends of the driving rods 24 coupled to the two adjacent cross bars 10 are pivoted together. The two driving rods 24 and the first scissors 21 form a parallelogram mechanism. In this embodiment, the middle of the driving rod 24 is pivoted to the portion of the first rod located at the pivot of the two first rods and facing to the side close to the first end of the driving rod 24, preferably, the portion located below the pivot of the two first rods, so that the pivot of the two driving rods 24 is located below the pivot of the two first rods. The link 25 is pivotally connected at one end to the slider 23 and at the other end to the cross bar 10 at a location spaced from the junction of the end supports and the cross bar, but preferably near the end of the cross bar 10.

The distance movement between the cross bar 10, the opening and closing movement of the first scissors fork 21, the opening and closing movement of the second scissors fork, the sliding of the sliding piece 23 and the opening and closing movement between the end support frame 20 and the cross bar 10 are linked. If the bed frame is folded: when the two cross rods 10 are folded close to each other, the first scissors fork 21 can be driven to fold, the first scissors fork 21 is folded, the telescopic rod is extended, the sliding piece 23 slides downwards, the end support frame 20 is folded and rotated towards the direction of the cross rod 10, so that the two cross rods are connected together in an abutting mode, and the end support frames are connected to the cross rods in an abutting mode, as shown in fig. 1, 2 and 3; then the straight rods are rotated relative to the middle base to enable the two straight rods to abut together, as shown in figures 3, 4 and 5. The opening of the bed frame is just opposite to the folding.

The cross bar of the bed frame in this embodiment may be connected to the bed cloth or, alternatively, to the air mattress.

Example two

Please refer to fig. 7, which is different from the first embodiment in that: the second end of the driving rod 24 is pivoted to the portion of the first rod located at the pivot of the two first rods, which is close to the first end side of the driving rod 24, and the portion located below the pivot of the two first rods.

EXAMPLE III

Please refer to fig. 8, which is different from the first embodiment in that: the second end of the driving rod 24 is pivoted to the portion of the first rod located at the pivot of the two first rods, which is close to the first end side of the driving rod 24, and located above the pivot of the two first rods.

Example four

Please refer to fig. 9, which is different from the first embodiment in that: the slider 23 is coupled with two driving rods 24, first ends of the two driving rods 24 are both pivoted on the slider 23, and second ends of the two driving rods 24 are respectively pivoted on the portions of the two first supporting rods of the first scissors 21, which are located at the pivoting positions of the two first supporting rods and face to the side close to the first ends of the driving rods 24.

EXAMPLE five

Please refer to fig. 10, which is different from the first embodiment in that: the slider 23 is further pivotally connected to another driving rod 24, a first end of the another driving rod 24 is pivotally connected to the slider 23, and a second end of the another driving rod 24 is pivotally connected to a portion of another first rod 21 located at the pivotal connection of the two first rods, which portion is located on the side close to the first end of the driving rod 24, and located above the pivotal connection of the two first rods.

EXAMPLE six

Please refer to fig. 11, which is different from the first embodiment in that: comprises three cross bars 10, each two adjacent cross bars are connected together by a first scissor fork, and the ends of the cross bars are connected with a support rod 22, a sliding piece 23, a driving rod 24 and a connecting rod 25.

EXAMPLE seven

Please refer to fig. 12, which is different from the first embodiment in that: the ends of the two cross rods on the same side are connected together through two first scissors 21, and the two first cross rods 21 are different in length. The end of a first strut of one first scissors fork 21 is pivoted with the end of a first strut of the other first scissors fork 21; the middle part of the driving rod 24 is pivoted on a first supporting rod of the first scissors 21, and the other ends of the two driving rods 24 are respectively pivoted on the tail ends of the other first supporting rods of the two first scissors 21; the drive lever 24 and the first scissor fork 21 form a parallelogram mechanism.

Example eight

Referring to fig. 13 and 14, it is different from the first embodiment in that: the end support 20 is provided with a locking structure 28 for locking the end support 20 in an open state and locking the end support to release the end support, so that the bed cloth or the air cushion of the bed frame can be tightly bounced, and the use comfort is improved. The locking structure 28 is used for locking the first scissors fork to limit the relative rotation of the two first support rods, and specifically includes a first rod 281 pivotally connected to one first support rod of the first scissors fork and a second rod 282 pivotally connected to the other first support rod of the first scissors fork, the first rod 281 is provided with a clamping groove 283, the second rod 282 is provided with a clamping piece 284, after the bed frame is opened, the clamping groove and the clamping piece can be matched into a clamping mechanism by rotating the first rod and the second rod so as to be in a locking state. Preferably, the pivotal connection between the lever member and the first leg is the same as the pivotal connection between the first leg and the drive lever.

Example nine

Referring to fig. 15 and 16, it is different from the eighth embodiment in that: the locking structure 28 is used for locking the sliding of the sliding piece relative to the stay bar, and specifically includes: a lock member 287 is pivotally connected to the slider and an operating member 288 is pivotally connected to the slider. The slider is provided with a through slot penetrating through the inside and the outside, the stay bar is provided with a locking slot, the locking piece 287 is provided with a plug piece which can penetrate through the through slot and be inserted into the locking slot so as to enable the slider to be in a locking state; the operating piece is operated to enable the operating piece to move, the operating piece drives the locking piece to enable the plug connector to be far away from the locking groove, the locking structure is in a releasing state, and the sliding piece can slide relative to the support rod. Preferably, the operating member is pivotally connected to the slider. An elastic body 289 is arranged between the operating piece and the slider and used for keeping the operating piece in a locking state, and the operating piece abuts against the locking piece to keep the plug-in piece inserted into the locking groove.

Example ten

Please refer to fig. 17, which is different from the eighth embodiment in that: the locking structure 28 is used for the expansion of the telescopic tube of the locking brace, and the locking structure 28 includes a spring nail 285 arranged in the inner tube of the telescopic tube, a through hole penetrating the inner tube and the outer tube, and a lock hole 286 penetrating the outer tube of the telescopic tube. The elastic nail 285 has a protruding column, which passes through the through hole and is inserted into the lock hole 286 to realize locking under the action of the elastic force of the elastic nail 285 itself, and the protruding column is pressed to retract the elastic nail, and the protruding column is separated from the lock hole to stretch the telescopic tube.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. Foldable bedstead includes horizontal pole (10) and both ends support frame (20) two at least side by side, its characterized in that: the end support frame (20) is connected with the end parts of the two cross rods (10) on the same side, the end support frame (20) comprises scissors forks (21), the end parts of every two adjacent cross rods (10) on the same side are connected through the scissors forks (21), a support rod (22) is connected onto the end support frame (20), a sliding piece (23) is connected onto the support rod (22) in a sliding mode, a driving rod (24) is pivoted on the end support frame (20), one end of the driving rod (24) is pivoted on the sliding piece (23), so that the distance motion between the cross rods (10), the stretching motion of the scissors forks (21) and the stretching motion of the sliding piece (23) form linkage, a connecting rod (25) is pivoted on the cross rod (10), and the tail end of the connecting rod (25) is pivoted on the sliding piece (23), so that the sliding piece (23) and the stretching motion between the end support frame (20) and the cross; the end support frame (20) further comprises a rotating piece (26) connected with the top end of the scissors fork (21) and the end part of the cross rod (10) and a base (27) correspondingly located below the rotating piece (26) and pivoted with the bottom end of the scissors fork (21), and the support rod (22) is a telescopic rod and is connected between the corresponding rotating piece (26) and the base (27).

2. The foldable bed frame of claim 1, wherein: the rotating piece (26) and the base (27) are respectively fixedly connected to the upper end and the lower end of the stay bar (22), the top end of the scissor fork (21) is pivoted on the rotating piece (26), and the rotating piece (26) is pivoted on the end of the cross bar (10).

3. The foldable bed frame of claim 1, wherein: the other end of the link (25) is pivotally connected to the non-end of the cross bar (10).

4. The foldable bed frame according to any one of claims 1 to 3, wherein: each cross bar (10) is connected with a stay bar (22), a slide piece (23), a driving rod (24) and a connecting rod (25) in a matching way.

5. The foldable bed frame according to any one of claims 1 to 3, wherein: the other end of the driving rod (24) is pivoted on the scissors fork (21).

6. The foldable bed frame of claim 4, wherein: in the two adjacent crossbars (10): the middle part of the driving rod (24) is pivoted on the scissors fork (21), the tail ends of the driving rods (24) corresponding to the two adjacent cross rods (10) are pivoted together, and the driving rods (24) and the scissors fork (21) form a parallelogram mechanism.

7. The foldable bed frame of claim 6, wherein: the scissors fork (21) comprises two legs pivotally connected together, and the pivotal connection of the two drive levers (24) is located below the pivotal connection of the two legs.

8. The foldable bed frame according to any one of claims 1 to 3, wherein: the scissors fork (21) comprises two support rods which are pivoted together, the sliding piece (23) is matched with two driving rods (24), one end of each driving rod (24) is pivoted on the sliding piece (23), and the other end of each driving rod is respectively pivoted on two support rods of the scissors fork (21).

9. The foldable bed frame of claim 4, wherein: the end support frame (20) comprises two scissors forks (21), and the scissors forks (21) comprise two support rods which are pivoted together; the tail end of one support rod of one scissors fork (21) is pivoted with the tail end of one support rod of the other scissors fork (21); the middle part of the driving rod (24) is pivoted on the scissors fork (21), and the other ends of the two driving rods (24) are respectively pivoted at the tail ends of the other supporting rods of the two scissors forks (21); the driving rod (24) and the scissors fork (21) form a parallelogram mechanism.

10. The foldable bed frame according to any one of claims 1 to 3, wherein: each cross bar (10) comprises a straight bar (12) with two ends pivoted to a middle seat (11), and the middle seats (11) of every two adjacent cross bars (10) are connected together through another scissors fork (13).

11. The foldable bed frame according to any one of claims 1 to 3, wherein: the end support frame (20) is provided with a locking structure (28) which is used for locking the end support frame (20) in an opening state and can be released in locking.

12. Foldable bedstead includes horizontal pole (10) and both ends support frame (20) two at least side by side, its characterized in that: the end support frame (20) is connected with the end parts of the two cross rods (10) on the same side, the end support frame (20) comprises scissors forks (21), the end parts of every two adjacent cross rods (10) on the same side are connected through the scissors forks (21), a support rod (22) is connected onto the end support frame (20), a sliding piece (23) is connected onto the support rod (22) in a sliding mode, a driving rod (24) is pivoted on the end support frame (20), one end of the driving rod (24) is pivoted on the sliding piece (23), so that the distance motion between the cross rods (10), the stretching motion of the scissors forks (21) and the stretching motion of the sliding piece (23) form linkage, a connecting rod (25) is pivoted on the cross rod (10), and the tail end of the connecting rod (25) is pivoted on the sliding piece (23), so that the sliding piece (23) and the stretching motion between the end support frame (20) and the cross; the end support frame (20) further comprises a rotating piece (26) connected with the top end of the scissors fork (21) and the end part of the cross rod (10) and a base (27) correspondingly located below the rotating piece (26) and pivoted with the bottom end of the scissors fork (21), the support rod (22) is connected between the corresponding rotating piece (26) and the base (27), the upper end of the support rod (22) is connected with the rotating piece (26), and the lower end of the support rod can slide relative to the base (27).

13. The foldable bed frame of claim 12, wherein: the other end of the link (25) is pivotally connected to the non-end of the cross bar (10).

14. The foldable bed frame according to claim 12 or 13, wherein: each cross bar (10) is connected with a stay bar (22), a slide piece (23), a driving rod (24) and a connecting rod (25) in a matching way.

15. The foldable bed frame according to claim 12 or 13, wherein: the other end of the driving rod (24) is pivoted on the scissors fork (21).

16. The foldable bed frame of claim 14, wherein: in the two adjacent crossbars (10): the middle part of the driving rod (24) is pivoted on the scissors fork (21), the tail ends of the driving rods (24) corresponding to the two adjacent cross rods (10) are pivoted together, and the driving rods (24) and the scissors fork (21) form a parallelogram mechanism.

17. The foldable bed frame of claim 16, wherein: the scissors fork (21) comprises two legs pivotally connected together, and the pivotal connection of the two drive levers (24) is located below the pivotal connection of the two legs.

18. The foldable bed frame according to claim 12 or 13, wherein: the scissors fork (21) comprises two support rods which are pivoted together, the sliding piece (23) is matched with two driving rods (24), one end of each driving rod (24) is pivoted on the sliding piece (23), and the other end of each driving rod is respectively pivoted on two support rods of the scissors fork (21).

19. The foldable bed frame of claim 14, wherein: the end support frame (20) comprises two scissors forks (21), and the scissors forks (21) comprise two support rods which are pivoted together; the tail end of one support rod of one scissors fork (21) is pivoted with the tail end of one support rod of the other scissors fork (21); the middle part of the driving rod (24) is pivoted on the scissors fork (21), and the other ends of the two driving rods (24) are respectively pivoted at the tail ends of the other supporting rods of the two scissors forks (21); the driving rod (24) and the scissors fork (21) form a parallelogram mechanism.

20. The foldable bed frame according to claim 12 or 13, wherein: each cross bar (10) comprises a straight bar (12) with two ends pivoted to a middle seat (11), and the middle seats (11) of every two adjacent cross bars (10) are connected together through another scissors fork (13).

21. The foldable bed frame according to claim 12 or 13, wherein: the end support frame (20) is provided with a locking structure (28) which is used for locking the end support frame (20) in an opening state and can be released in locking.