CN210630939U

CN210630939U - Foldable bedstead

Info

Publication number: CN210630939U
Application number: CN201921428633.7U
Authority: CN
Inventors: 杨永新
Original assignee: Yangzhou Jialanduo Import And Export Co ltd
Current assignee: Yangzhou Jialanduo Import And Export Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-29
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a foldable bedstead in the technical field of furniture, which comprises a left folding component and a right folding component, wherein a middle folding component is connected between the left folding component and the right folding component, one side of the middle folding component, which is arranged relative to the left folding component, is hinged with a first hinge part, the first hinge part comprises a first vertical part, the left side and the right side of the upper part of the first vertical part are respectively provided with a first horizontal part, the two first horizontal parts are respectively hinged with the upper parts of the middle folding component and the left folding component, and one end of the middle folding component and the lower part of the left folding component are respectively hinged with the first vertical part; one side of the middle folding assembly, which is arranged relative to the right folding assembly, is hinged with a second hinge element, the second hinge element comprises a second vertical part, the left side and the right side of the lower part of the second vertical part are respectively provided with a second horizontal part, the two second horizontal parts are respectively hinged with the lower parts of the middle folding assembly and the right folding assembly, and the other end of the middle folding assembly and the upper part of the right folding assembly are respectively hinged with the upper parts of the second vertical part; the utility model discloses simple structure, it is folding convenient.

Description

Foldable bedstead

Technical Field

The utility model belongs to the technical field of anchor clamps, in particular to collapsible bedstead.

Background

The folding bed is characterized by convenient use, storage space saving and the like, and is often used as a spare article in daily life.

In the prior art, a chinese invention patent is disclosed entitled "foldable bed frame", publication No. CN 108430272 a, publication No. 2018.08.21, which comprises a plurality of elongated frame members, a plurality of frame support members, and a plurality of mattress support members, each frame support member including a foot portion for resting on a base plate, the support members having at least two openings therein for receiving one end of the elongated frame members, the elongated frame members being configured such that the frame support members collectively remain parallel to the base plate when the foot portion is resting on the floor, each flat cushion support member having a flat upper surface for receiving a mattress and a plurality of frame engagement structures, the plurality of frame engagement structures enabling the mattress support members to be securely held in a horizontal position by the assembled frame, the elongated frame members having two grooves on opposite sides of the frame members, the openings in the frame support members have protrusions formed therein that are sized to fit into the recesses in the frame members, which facilitates assembly of the foundation, but when the foundation is collapsed, the plurality of frame engagement structures need to be pulled out of the recesses, each elongated frame member needs to be pulled out of the opening in the frame support member, and after the collapse is complete, the components need to be assembled for use, which prevents quick storage and is inconvenient to collapse.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model discloses an overcome the weak point among the above-mentioned prior art, solve among the prior art inconvenient technical problem of folding, provide a collapsible bedstead, the utility model discloses simple structure, it is folding convenient.

The purpose of the utility model is realized like this: a foldable bedstead comprises a left folding assembly, a middle folding assembly and a right folding assembly, wherein the middle folding assembly is connected between the left folding assembly and the right folding assembly, one side, opposite to the left folding assembly, of the middle folding assembly is hinged with a first hinge piece, the first hinge piece comprises a first vertical part, the left side and the right side of the upper part of the first vertical part are respectively provided with a first horizontal part, the first horizontal part close to the middle folding assembly is hinged with the upper part of the middle folding assembly, the first horizontal part far away from the middle folding assembly is hinged with the upper part of the left folding assembly, and one end of the middle folding assembly and the lower part of the left folding assembly are respectively hinged with the lower part of; one side that middle folding assembly right folding assembly relatively set up articulates there is articulated elements two, and articulated elements two includes vertical portion two, and the left and right sides of vertical portion two lower parts respectively is equipped with horizontal part two, and horizontal part two that is close to middle folding assembly is articulated with middle folding assembly's lower part, and horizontal part two that keeps away from middle folding assembly is articulated with right folding assembly's lower part, and the upper portion of middle folding assembly other end and right folding assembly is articulated with the upper portion of vertical portion two respectively.

When the utility model is in a complete unfolding state, the upper sides of the left folding component, the middle folding component and the right folding component are flush, the lower sides of the left folding component, the middle folding component and the right folding component are flush, and each folding component is horizontally placed on the ground; when the bedstead needs to be folded, the left folding assembly rotates downwards around the horizontal part I, one end of the middle folding assembly rotates downwards around the horizontal part I, the other end of the middle folding assembly rotates upwards around the horizontal part II, the right folding assembly rotates upwards around the horizontal part II, and the left folding assembly, the middle folding assembly and the right folding assembly are folded together, so that the occupied space is small and the folding is convenient; can be used as a bed.

In order to smoothly realize the folding action of the left folding assembly, the left folding assembly comprises a first upper edge plate and a first lower edge plate, the first upper edge plate is hinged with a first horizontal part, the first lower edge plate is hinged with the lower part of a first vertical part, at least one first supporting rod is hinged to the front and rear direction of the first upper edge plate, one end of the first upper edge plate, far away from the first supporting rod, is arranged on the first lower edge plate, the supporting rods are parallel to each other, and the central projection of the hinged position of the first supporting rod and the first upper edge plate is A at the point of the plane of the front side of the first upper edge plate₁The point of the center of the hinged position of the first support rod and the first lower side plate projected on the plane of the front side of the first upper side plate is B₁The point of the center projection of the hinge position of the first upper edge plate and the first horizontal part on the plane of the front side of the first upper edge plate is A₂The point of the center projection of the hinge of the first lower side plate and the first vertical part on the plane of the front side of the first upper side plate is B₂，A₁B₁B₂A₂Forming a parallelogram.

To smoothly realize the folding action of the middle folding componentThe middle folding assembly comprises a middle upper edge plate and a middle lower edge plate, and is characterized in that the middle upper edge plate is hinged to a first horizontal part at one end, the middle lower edge plate is hinged to a first vertical part at one end, the middle upper edge plate is hinged to a second vertical part at the other end, the middle lower edge plate is hinged to a second horizontal part at the other end, at least one middle support rod is hinged to the middle upper edge plate, the middle support rods are parallel to each other, and the point of the center projection of the hinged position of the middle upper edge plate and the middle upper edge plate, on the plane of the front side of the middle upper edge plate, is A₃The point of the center projection of the hinged part of the middle support rod and the middle lower side plate on the plane of the front side of the middle upper side plate is B₃The point of the center projection of the hinge of the middle upper side plate and the vertical part on the plane of the front side of the middle upper side plate is A₄The point of the center projection of the second hinge joint of the middle lower sideboard and the horizontal part on the plane of the front side of the middle upper sideboard is B₄，A₃B₃B₄A₄Forming a parallelogram.

In order to smoothly realize the folding action of the right folding assembly, the right folding assembly comprises an upper edge plate II and a lower edge plate II, at least one supporting rod II is hinged on the upper edge plate II, the lower part of the supporting rod II is hinged with the lower edge plate II, the upper edge plate II is hinged with the vertical part II, the lower edge plate II is hinged with the horizontal part II, and the point of the center projection of the hinged part of the upper edge plate II and the supporting rod II on the plane of the front side of the upper edge plate II is A₅The point of the center of the hinged position of the second lower side plate and the second support rod projected on the plane where the front side of the second upper side plate is located is B₅The point of the center of the hinged part of the second upper edge plate and the second vertical part projected on the plane on the front side of the second upper edge plate is A₆The point of the center projection of the hinged part of the second lower edge plate and the second horizontal part on the plane of the front side of the second upper edge plate is B₆，A₅B₅B₆A₆Forming a parallelogram.

In order to further realize the rapid positioning of the left folding assembly during folding, the first support rod is provided with three first support rods which are arranged at intervals in the front-back direction, one outward side of the first support rod is provided with a first positioning part in the left-right direction, and the first positioning part can be attached to the upper side of the first lower side plate during folding; in the height direction, the first positioning part is arranged between the first upper side plate and the first lower side plate.

In order to further improve the stability when middle folding assembly expandes, the intermediate strut pole is provided with two, and two intermediate strut poles two interval settings in the left and right direction.

In order to further realize the quick positioning when middle folding assembly is folded, one middle support rod is close to left folding assembly, another middle support rod is close to right folding assembly, one side that the relative left folding assembly of one middle support rod set up is equipped with middle location portion one, one side that the relative right folding assembly of another middle support rod set up is equipped with middle location portion two, under the expansion state, in the direction of height, middle location portion one and middle location portion two all set up in the middle between last sideboard and middle sideboard, during folding, middle location portion one and middle location portion two laminate lower sideboard upside in the middle respectively.

In order to further realize the quick positioning when the right folding assembly is folded, the third supporting rod is provided with three, the three third supporting rods are arranged at intervals in the front-back direction, one side, facing outwards, of the third supporting rod is provided with a second positioning part, the second positioning part is arranged between the second upper side plate and the second lower side plate in the height direction, and the second positioning part can be attached to the lower side of the second upper side plate in the folding process.

In order to limit the rotating directions of the left folding assembly, the middle folding assembly and the right folding assembly to enable the left folding assembly, the middle folding assembly and the right folding assembly to be folded rapidly, one side, outwards facing in the front-back direction, of the first vertical portion is provided with two limiting portions I which respectively limit the left folding assembly and the middle folding assembly to rotate upwards, and one side, outwards facing in the front-back direction, of the second vertical portion is provided with two limiting portions II which respectively limit the middle folding assembly and the right folding assembly to rotate downwards.

Drawings

Fig. 1 is a front view of the present invention in the unfolded state.

Fig. 2 is a three-dimensional structure view in the unfolded state of the present invention.

Fig. 3 is an enlarged view of a portion a-of fig. 1.

Fig. 4 is a partially enlarged view of fig. 1 at B.

Fig. 5 is a first three-dimensional structure diagram of the utility model when folded.

Fig. 6 is a partially enlarged view of C in fig. 5.

Fig. 7 is a partial enlarged view of fig. 5 at D.

Fig. 8 is a second three-dimensional structure view of the utility model when folded.

Fig. 9 is a partial enlarged view at E in fig. 8.

Fig. 10 is a three-dimensional structure view of the present invention when folded.

Fig. 11 is a partial enlarged view of fig. 10 at F.

Fig. 12 is a partial enlarged view at G in fig. 2.

The folding assembly comprises a left folding assembly 1, a first lower side plate 101, a first upper side plate 102, a first 103 supporting rod, a first 103a positioning part, a first 2 middle folding assembly, a second 201 middle lower side plate, a second 202 middle upper side plate, a first 203 middle supporting rod, a first 203a middle positioning part, a second 203b middle positioning part, a right folding assembly 3, a second 301 lower side plate, a second 302 supporting rod, a second 302a positioning part, a second 303 upper side plate, a first 4 hinge part, a first 401 vertical part, a first 402 horizontal part, a first 403 limiting part, a second 5 hinge part, a second 501 horizontal part, a second 502 vertical part and a second 503 limiting part.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

A foldable bed frame as shown in fig. 1 to 12, which comprises a left folding assembly 1, a middle folding assembly 2 and a right folding assembly 3, wherein the middle folding assembly 2 is connected between the left folding assembly 1 and the right folding assembly 3, one side of the middle folding assembly 2, which is arranged opposite to the left folding assembly 1, is hinged with a first hinge assembly 4, the first hinge assembly 4 comprises a first vertical part 401, the left side and the right side of the upper part of the first vertical part 401 are respectively provided with a first horizontal part 402, the first horizontal part 402, which is close to the middle folding assembly 2, is hinged with the upper part of the middle folding assembly 2, the first horizontal part 402, which is far away from the middle folding assembly 2, is hinged with the upper part of the left folding assembly 1, and one end of the middle folding assembly 2 and the lower; one side that middle folding assembly 2 set up relative right folding assembly 3 articulates there is articulated union two 5, and articulated union two 5 includes vertical portion two 502, and the left and right sides of the lower part of vertical portion two 502 respectively is equipped with horizontal part two 501, and the horizontal part two 501 that is close to middle folding assembly 2 is articulated with the lower part of middle folding assembly 2, and the horizontal part two 501 that keeps away from middle folding assembly 2 is articulated with the lower part of right folding assembly 3, and the upper portion of the other end of middle folding assembly 2 and right folding assembly 3 is articulated with the upper portion of vertical portion two 502 respectively.

In order to smoothly realize the folding action of the left folding assembly 1, the left folding assembly 1 comprises a first upper edge plate 102 and a first lower edge plate 101, the first upper edge plate 102 is hinged with a first horizontal part 402, the first lower edge plate 101 is hinged with the lower part of a first vertical part 401, at least one first support rod 103 is hinged to the first upper edge plate 102 in the front-back direction, one end, away from the first upper edge plate 102, of the first support rod 103 is connected with the first lower edge plate 101, the support rods 103 are parallel to each other, and the center of the hinged part of the first support rod 103 and the first upper edge plate 102 projects on a plane located on the front side of the first upper edge plate 102 to form₁The point of the central projection of the hinged position of the first support rod 103 and the first lower side plate 101 on the plane of the front side of the first upper side plate 102 is B₁The point of the central projection of the hinge joint of the first upper edge plate 102 and the first horizontal part 402 on the plane of the front side of the first upper edge plate 102 is A₂The point of the central projection of the hinged position of the first lower side plate 101 and the first vertical part 401 on the plane of the front side of the first upper side plate 102 is B₂，A₁B₁B₂A₂Forming a parallelogram; the first support rods 103 are three, the three first support rods 103 are arranged at intervals in the front-back direction, one outward side of the first support rods 103 is provided with a first positioning part 103a in the left-right direction, and the first positioning part 103a can be attached to the upper side of the first lower side plate 101 during folding; in the height direction, the first positioning portion 103a is located between the first upper side plate 102 and the first lower side plate 101.

In order to smoothly realize the folding action of the middle folding assembly 2, the middle folding assembly 2 comprises a middle upper side plate 202 and a middle lower side plate 201, in the left-right direction, one end of the middle upper side plate 202 is hinged with a first horizontal part 402, one end of the middle lower side plate 201 is hinged with a first vertical part 401, the other end of the middle upper side plate 202 is hinged with a second vertical part 502, the other end of the middle lower side plate 201 is hinged with a second horizontal part 501, and the middle upper side plate 202At least one middle supporting rod 203 is hinged on the upper part, the middle supporting rods 203 are parallel to each other, and the point of the center projection of the hinged part of the middle supporting rod 203 and the middle upper side plate 202 on the plane of the front side of the middle upper side plate 202 is A₃The point of the central projection of the hinged position of the middle support rod 203 and the middle lower side plate 201 on the plane of the front side of the middle upper side plate 202 is B₃The point of the central projection of the hinge of the middle upper side plate 202 and the second vertical part 502 on the plane of the front side of the middle upper side plate 202 is A₄The point of the central projection of the hinge point of the middle lower sideboard 201 and the horizontal part 501 on the plane of the front side of the middle upper sideboard 202 is B₄，A₃B₃B₄A₄Forming a parallelogram; the two middle support rods 203 are arranged at intervals in the left-right direction, one middle support rod 203 is close to the left folding assembly 1, the other middle support rod 203 is close to the right folding assembly 3, one side, opposite to the left folding assembly 1, of one middle support rod 203 is provided with a first middle positioning part 203a, one side, opposite to the right folding assembly 3, of the other middle support rod 203 is provided with a second middle positioning part 203b, in the unfolding state, in the height direction, the first middle positioning part 203a and the second middle positioning part 203b are arranged between the middle upper side plate 202 and the middle lower side plate 201, and when the folding structure is folded, the first middle positioning part 203a and the second middle positioning part 203b are respectively attached to the upper side of the middle lower side plate 201.

In order to smoothly realize the folding action of the right folding assembly 3, the right folding assembly 3 comprises a second upper edge plate 303 and a second lower edge plate 301, at least one second support rod 302 is hinged on the second upper edge plate 303, the lower part of the second support rod 302 is hinged with the second lower edge plate 301, the second upper edge plate 303 is hinged with a second vertical part 502, the second lower edge plate 301 is hinged with a second horizontal part 501, and the point of the center projection of the hinged part of the second upper edge plate 303 and the second support rod 302 on the plane of the front side of the second upper edge plate 303 is A₅The point of the central projection of the hinged part of the second lower side plate 301 and the second support rod 302 on the plane of the front side of the second upper side plate 303 is B₅The point of the central projection of the hinged position of the second upper edge plate 303 and the second vertical part 502 on the plane of the front side of the second upper edge plate 303 is A₆The center of the hinge joint of the second lower edge plate 301 and the second horizontal part 501 is projected on the second upper edge plate303 front side is located on a plane with a point B₆，A₅B₅B₆A₆The three support rods are arranged at intervals in the front-back direction, the second positioning parts 302a are arranged on the outward side of the three support rods, in the height direction, the second positioning parts 302a are arranged between the second upper side plate 303 and the second lower side plate 301, and when the folding type.

In order to limit the rotating directions of the left folding assembly 1, the middle folding assembly 2 and the right folding assembly 3 to enable the left folding assembly 1, the middle folding assembly 2 and the right folding assembly 3 to be folded quickly, two limiting parts 403 which respectively limit the left folding assembly 1 and the middle folding assembly 2 to rotate upwards are arranged on one side, facing outwards in the front-back direction, of the first vertical part 401, and two limiting parts 503 which respectively limit the middle folding assembly 2 and the right folding assembly 3 to rotate downwards are arranged on one side, facing outwards in the front-back direction, of the second vertical part 502.

When the utility model is in a completely unfolded state, the upper sides of the first upper edge plate 102, the middle upper edge plate 202 and the second upper edge plate 303 are flush, the lower sides of the first lower edge plate 101, the middle lower edge plate 201 and the second lower edge plate 301 are flush, each folding component is horizontally placed on the ground, and the first support rod 103, the first middle support rod 203, the second middle support rod 203, the third support rod, the first hinge part 4 and the second hinge part 5 are all in a vertical state; when the bed frame needs to be folded, the left folding assembly 1 rotates downwards around the first horizontal part 402, the first upper edge plate 102 and the second lower edge plate 301 rotate downwards, when the first positioning part 103a is attached to the upper side of the second lower edge plate 301, the first upper edge plate 102 cannot rotate downwards continuously, one end of the middle folding assembly 2 rotates downwards around the first horizontal part 402, namely, the middle upper edge plate 202 rotates downwards around the first horizontal part 402, one end of the middle lower edge plate 201 rotates downwards around the first vertical part 401, the other end of the middle upper edge plate 202 rotates upwards around the second vertical part 502, the other end of the middle lower edge plate 201 rotates upwards around the second horizontal part 501, and the middle positioning part 203a and the middle positioning part 203b are respectively attached to the upper side of the middle lower edge plate 201, so that the middle upper edge plate 202 cannot rotate downwards continuously, the middle folding assembly 2 is folded in place; the right folding assembly 3 rotates upwards around the second horizontal part 501, specifically, the second upper edge plate 303 rotates upwards around the second vertical part 502, the second lower edge plate 301 rotates upwards around the second horizontal part 501, when the second positioning part 302a is attached to the lower side of the second upper edge plate 303, the second lower edge plate 301 cannot rotate upwards continuously, the right folding assembly 3 is folded in place, the first limiting part 403 and the second limiting part 503 limit the rotating directions of the left folding assembly 1, the middle folding assembly 2 and the right folding assembly 3, so that the folding of the bed frame is further facilitated, the left folding assembly 1, the middle folding assembly 2 and the right folding assembly 3 are folded together, the occupied space is small, and the folding is convenient; can be used as a bed.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. A foldable bedstead is characterized by comprising a left folding assembly, a middle folding assembly and a right folding assembly, wherein the middle folding assembly is connected between the left folding assembly and the right folding assembly, one side, which is arranged relative to the left folding assembly, of the middle folding assembly is hinged with a first hinge element, the first hinge element comprises a first vertical part, the left side and the right side of the upper part of the first vertical part are respectively provided with a first horizontal part, the first horizontal part which is close to the middle folding assembly is hinged with the upper part of the middle folding assembly, the first horizontal part which is far away from the middle folding assembly is hinged with the upper part of the left folding assembly, and one end of the middle folding assembly and the lower part of the left folding assembly are respectively; one side that middle folding assembly right folding assembly relatively set up articulates there is articulated elements two, and articulated elements two includes vertical portion two, and the left and right sides of vertical portion two lower parts respectively is equipped with horizontal part two, and horizontal part two that is close to middle folding assembly is articulated with middle folding assembly's lower part, and horizontal part two that keeps away from middle folding assembly is articulated with right folding assembly's lower part, and the upper portion of middle folding assembly other end and right folding assembly is articulated with the upper portion of vertical portion two respectively.

2. According toThe foldable bed frame as claimed in claim 1, wherein the left folding member comprises a first upper board and a first lower board, the first upper board is hinged to the first horizontal portion, the first lower board is hinged to the lower portion of the first vertical portion, at least one first support rod is hinged to the first upper board in the front-rear direction, one end of the first support rod away from the first upper board is connected to the first lower board, the support rods are parallel to each other, and the center of the hinge between the first support rod and the first upper board is projected on the plane of the front side of the first upper board at a point A₁The point of the center of the hinged position of the first support rod and the first lower side plate projected on the plane of the front side of the first upper side plate is B₁The point of the center projection of the hinge position of the first upper edge plate and the first horizontal part on the plane of the front side of the first upper edge plate is A₂The point of the center projection of the hinge of the first lower side plate and the first vertical part on the plane of the front side of the first upper side plate is B₂，A₁B₁B₂A₂Forming a parallelogram.

3. The foldable bed frame as claimed in claim 2, wherein the middle folding assembly comprises a middle upper board and a middle lower board, one end of the middle upper board is hinged to the first horizontal part, one end of the middle lower board is hinged to the first vertical part, the other end of the middle upper board is hinged to the second vertical part, the other end of the middle lower board is hinged to the second horizontal part, the middle upper board is hinged to at least one middle support rod, the middle support rods are parallel to each other, and a point of a central projection of a hinge point of the middle support rod and the middle upper board on a plane of the front side of the middle upper board is A₃The point of the center projection of the hinged part of the middle support rod and the middle lower side plate on the plane of the front side of the middle upper side plate is B₃The point of the center projection of the hinge of the middle upper side plate and the vertical part on the plane of the front side of the middle upper side plate is A₄The point of the center projection of the second hinge joint of the middle lower sideboard and the horizontal part on the plane of the front side of the middle upper sideboard is B₄，A₃B₃B₄A₄Forming a parallelogram.

4. Root of herbaceous plantThe foldable bed frame as claimed in claim 1, wherein the right folding assembly comprises a second upper board and a second lower board, the second upper board is hinged with at least one second support rod, the lower part of the second support rod is hinged with the second lower board, the second upper board is hinged with the second vertical part, the second lower board is hinged with the second horizontal part, and the point of the center of the hinge of the second upper board and the second support rod projected on the plane of the front side of the second upper board is A₅The point of the center of the hinged position of the second lower side plate and the second support rod projected on the plane where the front side of the second upper side plate is located is B₅The point of the center of the hinged part of the second upper edge plate and the second vertical part projected on the plane on the front side of the second upper edge plate is A₆The point of the center projection of the hinged part of the second lower edge plate and the second horizontal part on the plane of the front side of the second upper edge plate is B₆，A₅B₅B₆A₆Forming a parallelogram.

5. The foldable bed frame according to claim 2, wherein the first support rod is provided with three support rods, the three support rods are arranged at intervals in the front-back direction, one side of the first support rod facing outwards in the left-right direction is provided with a first positioning part, and the first positioning part can be attached to the upper side of the first lower side plate when being folded; in the height direction, the first positioning part is arranged between the first upper side plate and the first lower side plate.

6. The foldable bed frame as claimed in claim 3, wherein the number of the middle support rods is two, and the two middle support rods are spaced apart in the left-right direction.

7. The foldable bed frame as claimed in claim 6, wherein one of the middle support rods is adjacent to the left folding assembly, the other middle support rod is adjacent to the right folding assembly, one of the middle support rods is provided with a first middle positioning portion on a side opposite to the left folding assembly, the other middle support rod is provided with a second middle positioning portion on a side opposite to the right folding assembly, the first middle positioning portion and the second middle positioning portion are both disposed between the middle upper side plate and the middle lower side plate in the height direction in the unfolded state, and the first middle positioning portion and the second middle positioning portion respectively abut against the upper side of the middle lower side plate in the folded state.

8. The foldable bed frame as claimed in claim 4, wherein the three support rods are spaced apart from each other in the front-rear direction, and the two positioning portions are disposed on the outward side of the three support rods and between the two upper and lower side plates in the height direction, so that the two positioning portions can be engaged with the lower side of the two upper side plates when folded.

9. The foldable bed frame according to any one of claims 1 to 8, wherein the first vertical portion is provided with two first limiting portions at a side facing outward in the front-rear direction for limiting upward rotation of the left folding assembly and the middle folding assembly, respectively, and the second vertical portion is provided with two second limiting portions at a side facing outward in the front-rear direction for limiting downward rotation of the middle folding assembly and the right folding assembly, respectively.