FOLDABLE BED FRAME AND BED FOR CHILDREN

Abstract

Disclosed is a foldable bed frame, which includes: an upper enclosure frame, including two first enclosure rods and two second enclosure rods, the first enclosure rod includes a first rod member, a second rod member, a first locking member and an unlocking member, the first locking member is disposed between the first rod member and the second rod member; the unlocking member is able to unlock the first locking member; a plurality of supporting legs, one end of which is rotatably connected to the upper enclosure frame, and the other end serves as a supporting end. The advantages of the present disclosure are that the unlocking and folding are simple to operate when folding the bed frame, and after the bed frame is folded, the overall volume thereof is small, the space occupied is small, and it is convenient to store and carry.

Claims

1. A foldable bed frame having an unfolded state and a folded state, comprising: an upper enclosure frame, comprising two first enclosure rods and two second enclosure rods arranged opposite to each other, two ends of one of the first enclosure rods are rotatably connected to one end of the two second enclosure rods, and two ends of the other first enclosure rod are rotatably connected to the other end of the two second enclosure rods; the first enclosure rod comprises a first rod member, a second rod member, a first locking member, and an unlocking member, the first rod member and the second rod member are rotatably connected, the first locking member is disposed between the first rod member and the second rod member, and is able to lock the first rod member and the second rod member; the unlocking member is able to unlock the first locking member; a plurality of supporting legs, wherein one end of the plurality of supporting legs is rotatably connected to the upper enclosure frame, and the other end of the plurality of supporting legs serves as a supporting end; a second locking member is arranged between the supporting leg and the upper enclosure frame, and the second locking member is able to lock the supporting leg; when the unlocking member is driven to unlock the first locking member, the first rod member and the second rod member can be inwardly rotated and folded; during the folding process, the first rod member and the second rod member are capable of driving the second locking member to unlock, so as to fold the supporting legs.

2. The foldable bed frame according to claim 1, wherein a first locking groove is formed on each supporting leg; when the second locking member is engaged with the first locking groove, the corresponding supporting leg is locked; when the second locking member is disengaged from the first locking groove, the supporting leg is unlocked.

3. The foldable bed frame according to claim 1, wherein the second locking member is connected to the first enclosure rod via a pull wire, one end of the pull wire is connected to the second locking member, and the other end is connected to the first enclosure rod; when being rotated and folded, the first enclosure rod pulls the second locking member through the pull wire, so that the second locking member is unlocked and the supporting legs are able to be rotated and folded.

4. The foldable bed frame according to claim 3, wherein a first spring is disposed between each supporting leg and the upper enclosure frame; one end of the first spring abuts against the second locking member, and the other end of the first spring abuts against the upper enclosure frame; the elastic force of the first spring enables the second locking member to have a tendency to move in its locking direction; when the first enclosure rod pulls the second locking member via the pull wire to unlock the second locking member, the first spring is compressed.

5. The foldable bed frame according to claim 4, wherein a receiving groove is formed on the second locking member, and the first spring is located in the receiving groove.

6. The foldable bed frame according to claim 1, wherein a second locking groove is formed on the second rod member, and the first locking member is able to be locked into the second locking groove to lock the first rod member and the second rod member; the unlocking member is movably disposed on the second rod member and is able to push the first locking member such that the first locking member is disengaged from the second locking groove, thereby unlocking the first rod member and the second rod member.

7. The foldable bed frame according to claim 1, wherein a second spring is provided between the first rod member and the first locking member, one end of the second spring abuts against the first locking member, and the other end of the second spring abuts against the first rod member; the elastic force of the second spring enables the first locking member to have a tendency to move in its locking direction; when the unlocking member drives the first locking member to unlock, the second spring is compressed.

8. The foldable bed frame according to claim 7, wherein a third spring is provided between the second rod member and the unlocking member, one end of the third spring abuts against the second rod member, and the other end of the third spring abuts against the unlocking member; when the unlocking member is pressed to unlock the first locking member, the third spring is compressed to release the unlocking member, and the third spring drives the unlocking member to reset.

9. The foldable bed frame according to claim 1, wherein the unlocking member is configured as an unlocking button, and the unlocking button is telescopically disposed on the second rod member; the unlocking button is provided with a pushing protrusion, and the unlocking button pushes the first locking member via the pushing protrusion to unlock the first locking member.

10. The foldable bed frame according to claim 9, wherein the unlocking button is provided with a plurality of elastic buckles, and the second rod member is provided with a plurality of corresponding locking slots; the elastic buckles are engaged in the locking slots to restrict the unlocking button from detaching from the second rod member.

11. The foldable bed frame according to claim 10, wherein a side wall of the elastic buckle is capable of abutting against a side wall of the locking slot to limit the circumferential rotation of the unlocking button.

12. The foldable bed frame according to claim 9, wherein a convex edge protruding outwardly in a circumferential direction is formed on the unlocking button, and the convex edge is capable of abutting against the second rod member to limit the pressing stroke of the unlocking button.

13. The foldable bed frame according to claim 9, wherein the unlocking button is provided with at least two of the pushing protrusions, and the second rod member is provided with through holes that are adapted to and are corresponding to the pushing protrusions one-to-one, the pushing protrusions are provided in the through holes in a penetrated manner.

14. The foldable bed frame according to claim 1, wherein both ends of the first rod member, both ends of the second rod member, both ends of the second enclosure rod, and one end of the supporting leg close to the upper enclosure frame are all provided with connecting joints, and the connecting joints are made of plastic.

15. The foldable bed frame according to claim 14, wherein the connecting joints at both ends of the second enclosure rod are configured as first connecting joints, and the connecting joint at the end of the first rod member close to the second enclosure rod and the connecting joint at the end of the second rod member close to the second enclosure rod are configured as second connecting joints; the first connecting joint is provided with multiple layers of first connecting pieces arranged in a spaced manner, and the second connecting joint is provided with multiple layers of second connecting pieces arranged in a spaced manner, the first connecting piece and the second connecting piece are hinged, and a second connecting piece is sandwiched between two adjacent layers of the first connecting pieces, and a first connecting piece is sandwiched between two adjacent layers of the second connecting pieces.

16. The foldable bed frame according to claim 1, wherein when the bed frame is in the unfolded state, the upper enclosure frame is rectangular, and a supporting leg is disposed at each of the four corners of the upper enclosure frame; when the bed frame is switched to the folded state, all four supporting legs are rotated and folded toward the upper enclosure frame. After the folding is completed, two of the supporting legs are stacked on the other two supporting legs.

17. The foldable bed frame according to claim 1, wherein when the bed frame is in the unfolded state, a plurality of the supporting legs are tilted outward relative to the upper enclosure frame, and the tilt angle is between 8 and 12.

18. The foldable bed frame according to claim 1, wherein when the bed frame is switched from the unfolded state to the folded state: the two first enclosure rods rotate and fold inwardly, and the two second enclosure rods move closer to each other; a plurality of the supporting legs rotate and fold, and the supporting ends thereof move closer to the upper enclosure frame; the length of the first enclosure rod is greater than the length of the second enclosure rod.

19. The foldable bed frame according to claim 18, wherein the first rod member, the second rod member and the second enclosure rod are of equal length; the length of the bed frame, when being folded, is equal to the length of the second enclosure rod.

20. A bed for children, wherein the bed for children comprises the foldable bed frame of claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG. 1 is a structural schematic diagram of a bed frame in an unfolded state;

[0044] FIG. 2 is a structural schematic diagram of an upper enclosure frame and a plurality of supporting legs after broken down;

[0045] FIG. 3 is an exploded view of a plurality of supporting legs, a first enclosure rod and a second enclosure rod;

[0046] FIG. 4 is a structural schematic diagram of a bed frame in the process of folding;

[0047] FIG. 5 is a structural schematic diagram of FIG. 4 when further folded;

[0048] FIG. 6 is a structural schematic diagram of a plurality of multiple supporting legs when folded;

[0049] FIG. 7 is a structural schematic diagram of a bed frame when completely folded;

[0050] FIG. 8 is a front view of FIG. 7;

[0051] FIG. 9 is a side view of FIG. 7.

REFERENCE NUMERALS

[0052] 1, upper enclosure frame; 11, first enclosure rod; 12, second enclosure rod; 111, first rod member; 112, second rod member; 110, second connecting joint; 110A, second connecting piece; 112A, second locking groove; 112B, locking slot; 113, first locking member; 114, unlocking member; 114A, pushing protrusion; 114B, elastic buckle; 114C, convex edge; 115, second spring; 116, third spring; 120, first connecting joint; 120A, first connecting piece; [0053] 2, supporting leg; 20, second locking member; 201, receiving groove; 21, first locking groove; 22, pull wire; 23, first spring.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0054] The technical solutions of the present disclosure are further described in conjunction with the specific embodiments and accompanying drawings, but the present disclosure is not limited to these embodiments.

[0055] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present disclosure are only used to explain the relative position relationship, movement, etc. between the components under a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly.

[0056] Furthermore, in the present disclosure, the descriptions such as first, second, one, etc. are only used for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as first and second may explicitly or implicitly include at least one of the features. In the description of the present disclosure, a/the plurality of means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present disclosure, unless otherwise clearly specified and defined, the terms connection/connected, fix/fixed, etc. should be understood in a broad sense. For example, fix/fixed can be fixedly connected, detachably connected or integrated; can be mechanically connected or electrically connected; can be directly connected or indirectly connected through an intermediate medium, can be internally communicated or mutually interacted between two elements, unless otherwise clearly defined. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0058] Furthermore, the technical solutions between various embodiments of the present disclosure can be mutually combined provided that these solutions can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of the present disclosure.

[0059] In this embodiment, as shown in FIG. 1 to FIG. 9, a foldable bed frame is optimally applied to a bed for children, and the bed for children folds as the bed frame folds. When the foldable bed frame is applied to a bed for children, the bed for children mainly includes the foldable bed frame and a cloth cover (not shown in the figures), and the cloth cover is arranged on the foldable bed frame, and can be unfolded as the bed frame is unfolded, and folded as the bed frame is folded. The foldable bed frame has an unfolded state and a folded state. When used, the bed frame is switched to the unfolded state (as shown in FIG. 1), and when not used, the bed frame is switched to the folded state (as shown in FIG. 7 to FIG. 9), thereby reducing the space occupied by the bed frame and ensuring convenient storage and carrying.

[0060] In this embodiment, the foldable bed frame mainly includes an upper enclosure frame 1 and a plurality of supporting legs 2 rotatably connected to the upper enclosure frame 1. When the bed frame is switched from the unfolded state to the folded state: the two first enclosure rods 11 rotate and fold inwardly, and the two second enclosure rods 12 move closer to each other; a plurality of the supporting legs 2 rotate and fold, and the supporting ends of the plurality of supporting legs 2 move closer to the upper enclosure frame 1.

[0061] As shown in FIG. 1 to FIG. 3, the upper enclosure frame 1 includes two first enclosure rods 11 and two second enclosure rods 12 arranged opposite to each other. The length of the first enclosure rod 11 is greater than that of the second enclosure rod 12. During the folding process, the first enclosure rod 11 can be folded in the center. To ensure that the space occupied after folding is small, the length of the first enclosure rod 11 is approximately twice that of the second enclosure rod 12. Two ends of one of the first enclosure rods 11 are rotatably connected to one end of the two second enclosure rods 12, and two ends of the other first enclosure rod 11 are rotatably connected to the other end of the two second enclosure rods 12. Therefore, the two first enclosure rods 11 and the two second enclosure rods 12 are connected end to end to form a rectangular frame structure, namely, an upper enclosure frame 1. the first enclosure rod 11 comprises a first rod member 111, a second rod member 112, a first locking member 113, and an unlocking member 114, the first rod member 111 and the second rod member 112 are rotatably connected, the first locking member 113 is disposed between the first rod member 111 and the second rod member 112, and is able to lock the first rod member 111 and the second rod member 112; the unlocking member 114 is able to unlock the first locking member 113. After the first locking member 113 is unlocked, the first rod member 111 and the second rod member 112 can rotate relative to each other to facilitate folding.

[0062] One end of the plurality of supporting legs 2 is rotatably connected to the upper enclosure frame 1, specifically, the upper end of the supporting leg 2 is provided with a connecting joint, and the supporting leg 2 is rotatably connected to the upper enclosure frame 1 through the connecting joint at the end thereof. The other ends of the plurality of supporting legs 2 are supporting ends, i.e., the lower ends of the plurality of supporting legs 2 are supporting ends, and the plurality of supporting ends can be supported on the ground to support the entire bed frame, i.e., to support the bed for children. The supporting ends of the supporting legs 2 can be provided with foot pads to increase the friction with the ground to ensure reliable support and no slipping. The foot pads are provided with through grooves for the connecting cloth belts to pass through, so as to facilitate the fixing of the cloth cover in the bed for children. A second locking member 20 is arranged between the supporting leg 2 and the upper enclosure frame 1, and the second locking member 20 is able to lock the supporting leg 2. When the second locking member 20 locks the supporting leg 2, the supporting leg 2 cannot be folded, so as to ensure the supporting stability of the supporting leg 2 when the bed frame is unfolded for use. During use, when a user drives the unlocking member 114 to unlock the first locking member 113, the first rod member 111 and the second rod member 112 can rotate inwardly and fold, and during the folding process, the first rod member 111 and the second rod member 112 can drive the second locking member 20 to unlock so as to fold the supporting leg 2. After the upper enclosure frame 1 and the plurality of supporting legs 2 are folded, the entire bed frame is folded.

[0063] In actual use, after the first locking member 113 locks the first rod member 111 and the second rod member 112, the first rod member 111 and the second rod member 112 cannot be folded, thereby ensuring the structural stability when unfolded. Only when the unlocking member 114 unlocks the first locking member 113, the first rod member 111 and the second rod member 112 can be relatively folded.

[0064] In this embodiment, for the foldable bed frame, when the unlocking member 114 is pressed to unlock the first locking member 113, the first rod member 111 and the second rod member 112 can rotate relative to each other, allowing the upper enclosure frame 1 to be folded. During the folding process, the first rod member 111 and the second rod member 112 drive the second locking member 20 to unlock, enabling the supporting legs 2 to rotate relative to the upper enclosure frame 1 and fold towards the upper enclosure frame 1, thus completing the overall folding of the bed frame. In the folding process, only the unlocking member 114 needs to be pressed to achieve one-button folding, without the need of multiple unlocking actions. The folding action is simple, and the bed frame is compact after folding, occupies little space, and is easy to store and carry.

[0065] It should be explained that both ends of the first rod member 111 are provided with connecting joints, both ends of the second rod member 112 are provided with connecting joints, and both ends of the second enclosure rod 12 are also provided with connecting joints. Each enclosure rod is rotatably connected to each rod member through the connecting joint at the ends thereof. The end (i.e., the upper end) of the supporting leg 2 close to the upper enclosure frame 1 is also provided with a connecting joint. All the connecting joints are made of plastic and can be injection molded. The specific structure of each connecting joint can be designed according to the actual needs of the user. Compared with other materials, the connecting joints made of plastic can be conveniently designed with corresponding structural features thereon, and are integrally injection-molded conveniently.

[0066] Specifically, the connecting joints at both ends of the second enclosure rod 12 are configured as first connecting joints 120, and the connecting joint at the end of the first rod member 111 close to the second enclosure rod 12 and the connecting joint at the end of the second rod member 112 close to the second enclosure rod 12 are configured as second connecting joints 110. In this embodiment, the first connecting joints 120 is configured as four, and the number of the second connecting joints 110 is also configured as four. The first connecting joint 120 is provided with multiple layers of first connecting pieces 120A arranged in a spaced manner, and the multiple layers of first connecting pieces 120A are arranged in parallel. The second connecting joint 110 is provided with multiple layers of second connecting pieces 110A arranged in a spaced manner, and the multiple layers of second connecting pieces 110A are arranged in parallel. The multiple layers of first connecting pieces 120A and the multiple layers of second connecting pieces 110A are hinged to realize the hinge connection between the second enclosure rod 12 and the first rod member 111 or between the second enclosure rod 12 and the second rod member 112.

[0067] Among them, a second connecting piece 110A is sandwiched between two adjacent layers of the first connecting pieces 120A, and a first connecting piece 120A is sandwiched between two adjacent layers of the second connecting pieces 110A. In this embodiment, as shown in the figures, there are three layers of the first connecting pieces 120A and two layers of the second connecting pieces 110A; the three layers of the first connecting pieces 120A and the two layers of the second connecting pieces 110A are interlaced and hinged to ensure the hinge stability. Furthermore, when relative rotation occurs between the second enclosure rod 12 and the first enclosure rod 11, it is ensured that the relative rotation between the first enclosure rod 11 and the second enclosure rod 12 is basically only allowed to occur in the same plane, ensuring smooth relative rotation.

[0068] In this embodiment, a first locking groove 21 is formed on each supporting leg 2, and the first locking groove 21 is located at the connecting joint at the upper end of the supporting leg 2. When the second locking member 20 is engaged with the first locking groove 21, the supporting leg 2 is locked, and the supporting leg 2 cannot be rotated relative to the upper enclosure frame 1 at this time, that is, the supporting leg 2 cannot be rotated and folded. When the second locking member 20 is disengaged from the first locking groove 21, the supporting leg 2 is unlocked, and the supporting leg 2 can be rotated and folded relative to the upper enclosure frame 1 after being unlocked.

[0069] When the bed frame is in the unfolded state, the upper enclosure frame 1 is rectangular, and a supporting leg 2 is disposed at each of the four corners of the upper enclosure frame 1, that is, a total of four supporting legs 2 are provided on the bed frame. At this state, the four supporting legs 2 are tilted outward relative to the upper enclosure frame 1, and the tilt angle of the supporting legs 2 is between 8 and 12, and the optimal angle is 9, which not only ensures the stability of the bed frame and prevents from tipping over when being unfolded, but also ensures sufficient height of the bed frame. The supporting leg 2 needs not to be made very long.

[0070] As shown in FIG. 7 to FIG. 9, when the bed frame is switched from the unfolded state to the folded state, all four supporting legs 2 are rotated and folded toward the upper enclosure frame 1. After the folding is completed, two of the supporting legs 2 are stacked on the other two supporting legs 2. After the four supporting legs 2 are folded, there is no outward protrusion and basically no space outside the upper enclosure frame 1 is occupied, thereby ensuring that the volume of the bed frame after being folded is small.

[0071] In this embodiment, the first rod member 111, the second rod member 112 and the second enclosure rod 12 are of equal length, and the length of the supporting leg 2 is less than or equal to the length of the first rod member 111, the second rod member 112 and the second enclosure rod 12, preferably, the length of the supporting leg 2 is basically equal to the length of the first rod member 111, the second rod member 112 and the second enclosure rod 12. The length of the bed frame, when being folded, is equal to the length of the second enclosure rod 12, the width of the bed frame is the sum of the widths of the two first connecting joints 120, the sum of the height of the first connecting joint 120 and the height of the connecting joint at the top of the supporting leg 2, that is, substantially equal to the height of the bed frame after being folded.

[0072] As shown in FIG. 2 in conjunction with FIG. 3, the second locking member 20 is connected to the first enclosure rod 11 via a pull wire 22, one end of the pull wire 22 is connected to the second locking member 20, and the other end of the pull wire 22 is connected to the second connecting joint 110 at the end of the second rod member 112 in the first enclosure rod 11, and a channel for the pull wire 22 to pass through is provided on a layer of second connecting pieces 110A of the second connecting joint 110. Similarly, a channel for the pull wire 22 to pass through is also provided inside the first connecting joint 120. When the first enclosure rod 11 rotates relative to the second enclosure rod 12, the first enclosure rod 11 can pull the second locking member 20 through the pull wire 22 to unlock the second locking member 20. Furthermore, a first spring 23 is disposed between each supporting leg 2 and the upper enclosure frame 1; one end of the first spring 23 abuts against the second locking member 20, and the other end of the first spring 23 abuts against the upper enclosure frame 1. The elastic force of the first spring 23 enables the second locking member 20 to have a tendency to move in its locking direction. Under the action of the first spring 23, the second locking member 20 will not be separated from the first locking groove 21 when in the locked state, thereby ensuring reliable locking. That is, when the bed frame is in the unfolded state, the supporting leg 2 is locked by the second locking member 20, and there will be no mis-locking situation, thereby ensuring reliable support of the supporting leg 2. When the first enclosure rod 11 pulls the second locking member 20 via the pull wire 22 to unlock the second locking member 20, the first spring 23 is compressed. When the bed frame is switched to the unfolded state, the second locking member 20 can be automatically locked into the first locking groove 21 under the action of the first spring 23, to achieve automatic locking and facilitating the use.

[0073] Preferably, a receiving groove 201 is formed on the second locking member 20, and the first spring 23 is located in the receiving groove 201, that is, the first spring 23 does not need to occupy additional mounting space and has a compact structure. On the second locking member 20, a boss protrudes into the receiving groove 201, and one end of the first spring 23 is sleeved on the boss to ensure that the first spring 23 will not be separated from the second locking member 20 during the locking and unlocking of the second locking member 20.

[0074] Further, specifically, a second locking groove 112A is formed on the second rod member 112, and the first locking member 113 is able to be locked into the second locking groove 112A to lock the first rod member 111 and the second rod member 112. At this time, part of the first locking member 113 is in the first rod member 111, and the other part is in the second rod member 112, so that the first rod member 111 and the second rod member 112 cannot rotate relative to each other, that is, the first rod member 111 is also correspondingly provided with a groove adapted to the first locking member 113, the shape of the groove is the same as the shape of the second locking groove 112A; both the groove and the second locking groove 112A can be inserted into the first locking member 113. The unlocking member 114 is able to push the first locking member 113 such that the first locking member 113 is disengaged from the second locking groove 112A, thereby unlocking the first rod member 111 and the second rod member 112, and the first rod member 111 and the second rod member 112 can be rotated and folded. A second spring 115 is provided between the first rod member 111 and the first locking member 113, one end of the second spring 115 abuts against the first locking member 113, and the other end of the second spring 115 abuts against the first rod member 111; the elastic force of the second spring 115 enables the first locking member 113 to have a tendency to move in its locking direction; when the unlocking member 114 drives the first locking member 113 to unlock, the second spring 115 is compressed. Similarly, the arrangement of the second spring 115 can ensure the structural stability of the first locking member 113 when being locked, so that the first locking member 113 will not be accidentally separated from the second locking groove 112A, and when the bed frame is unfolded, the force of the second spring 115 enables the first locking member 113 to be automatically locked into the second locking groove 112A, which is convenient to use.

[0075] In this embodiment, the first locking member 113 is configured to a special-shaped structure in shape, and a circular blind hole is respectively provided at both ends of the first locking member 113 in the length direction, and a second spring 115 is respectively provided in the two blind holes to ensure that the first locking member 113 is subjected to balanced force during use. In addition, one end of the two second springs 115 is respectively restricted in the two blind holes, which can prevent the second spring 115 from disengaging from the first locking member 113 during the locking and unlocking of the first locking member 113.

[0076] In this embodiment, the unlocking member 114 is telescopically disposed on the second rod member 112; a third spring 116 is provided between the second rod member 112 and the unlocking member 114, one end of the third spring 116 abuts against the second rod member 112, and the other end of the third spring 116 abuts against the unlocking member 114. When the unlocking member 114 is pressed to unlock the first locking member 113, the third spring 116 is compressed to release the unlocking member 114, and the third spring 116 drives the unlocking member 114 to reset, that is, the function of the third spring 116 is to reset the unlocking member 114 to facilitate the next unlocking.

[0077] Specifically, in this embodiment, the unlocking member 114 is configured as an unlocking button, and the unlocking button is telescopically disposed on the second rod member 112. By pressing the unlocking button, the first locking member 113 is unlocked. The unlocking button is provided with a pushing protrusion 114A, and the unlocking button pushes the first locking member 113 via the pushing protrusion 114A to unlock the first locking member 113. The unlocking button on the second rod member 112 faces downward, i.e. located below the second rod member 112, so that accidentally touching the unlocking button can be avoided to unlock the first locking member 113 when children play in the bed for children.

[0078] The unlocking button is provided with at least two of the pushing protrusions 114A, and the second rod member 112 is provided with through holes that are adapted to and are corresponding to the pushing protrusions 114A one-to-one, the pushing protrusions 114A are provided in the through holes in a penetrated manner. Wherein, the pushing protrusion 114A is set as a boss, and accordingly, the through hole on the second rod member 112 is set as a circular hole. The two bosses push both ends of the first locking member 113, so that the first locking member 113 is unlocked, ensuring that the first locking member 113 is balanced in force and does not tilt, thereby ensuring smooth unlocking without jamming.

[0079] A convex edge 114C protruding outwardly in a circumferential direction is formed on the unlocking button. On the connecting joint at the end of the second rod member 112 away from the first connecting joint 120, a mounting hole is provided for mounting the unlocking button, that is, the outer dimensions of the convex edge 114C on the unlocking button are larger than the dimensions of the mounting hole, so as to ensure that the convex edge 114C cannot pass through the mounting hole. In actual use, the convex edge 114C can abut against the outer edge of the mounting hole to limit the pressing stroke of the unlocking button, that is, when the convex edge 114C on the unlocking button abuts against the outer edge of the mounting hole during the process of pressing the unlocking button, the unlocking button cannot be pressed further.

[0080] The unlocking button is provided with a plurality of elastic buckles 114B, and the second rod member 112 is provided with a plurality of corresponding locking slots 112B; the elastic buckles 114B are engaged in the locking slots 112B to restrict the unlocking button from detaching from the second rod member 112. Preferably, two elastic buckles 114B are symmetrically provided on the unlocking button. It should be explained that the elastic buckle 114B needs to be able to undergo elastic deformation. When the unlocking button is mounted into the corresponding mounting hole, the elastic buckle 114B is squeezed inwardly and undergoes elastic deformation, so that the unlocking button can be mounted into the mounting hole. For example, the unlocking button of this embodiment can be made of plastic, and is integrally injection-molded, to ensure that the elastic buckle 114B has good elasticity.

[0081] A guide inclined wall (not marked in the figures) is provided at the end of the elastic buckle 114B. When the unlocking button is mounted in the mounting hole, the guide inclined wall first abuts against the edge of the mounting hole, so that the elastic buckle 114B is squeezed and elastically deformed inwardly until the elastic buckle 114B is inserted into the locking slot 112B. The elastic buckle 114B recovers from the elastic deformation, ensuring that the elastic buckle 114B is engaged with the locking slot 112B, and the elastic buckle 114B will not be separated from the locking slot 112B, that is, the unlocking button will not be separated from the mounting hole.

[0082] Further, a side wall of the elastic buckle 114B is set to be a plane, and a side wall of the locking slot 112B is also set to be a plane. The side wall of the elastic buckle 114B is capable of abutting against the side wall of the locking slot 112B to limit the circumferential rotation of the unlocking button, that is, the unlocking button can only telescopically move but cannot rotate circumferentially.

[0083] On the connecting joint at the end of the second rod member 112 away from the first connecting joint 120, both the unlocking button and the first locking member 113 are mounted thereon, therefore, in order to ensure the structural strength of the connecting joint, a metal sheet is provided thereon to reinforce the structural strength of the connecting joint.

[0084] In this embodiment, as shown in FIG. 1 and FIG. 4 to FIG. 9, FIG. 1 is a structural schematic diagram of a bed frame in an unfolded state, FIG. 4 is a schematic diagram of a bed frame during the process of folding an upper enclosure frame 1, FIG. 5 is a schematic diagram of a bed frame when the upper enclosure frame 1 is folded completely. FIG. 7 to FIG. 9 are schematic diagrams of a bed frame in a fully folded state, representing the bed frame is in a folded state from different perspectives. During use, when the bed frame needs to be folded, an operator presses the unlocking member 114, and the unlocking member 114 pushes the first locking member 113, so that the first locking member 113 moves upwardly and disengages from the second locking groove 112A, the first locking member 113 is unlocked, and the first rod member 111 and the second rod member 112 can be relatively rotated and folded, so that the upper enclosure frame 1 is folded (as shown in FIG. 5). Moreover, during the folding process of the upper enclosure frame 1, the first rod member 111 and the second rod member 112 will both rotate relative to the second enclosure rod 12, so that both the first rod member 111 and the second rod member 112 will pull the second locking member 20 via the pull wire 22, and the second locking members 20 at the four supporting legs 2 will move upwardly and disengage from the first locking groove 21. The second locking member 20 will be unlocked and the supporting legs 2 will be rotated upwardly; two of the supporting legs 2 will abut against the upper enclosure frame 1, and the other two supporting legs 2 will be stacked thereunder, that is, the four supporting legs 2 will be folded (as shown in FIG. 7 to FIG. 9), to complete the overall folding of the bed frame.

[0085] When the bed frame is in the folded state and needs to be switched to the unfolded state for use, the two supporting legs 2 at the bottom are first unfolded outwardly, and then the other two supporting legs 2 are unfolded outwardly to complete the unfolding of the four supporting legs 2; then the two second enclosure rods 12 are pulled to enable the two second enclosure rods 12 to move away from each other. During this process, the first rod member 111 and the second rod member 112 are rotated relative to the second enclosure rod 12 until the first rod member 111 and the second rod member 112 are collinear and the first rod member 111 and the second rod member 112 are perpendicular to the second enclosure rod 12, to complete the unfolding of the upper enclosure frame 1 and the bed frame; at this time, the first locking member 113 is automatically locked into the second locking groove 112A, the first rod member 111 and the second rod member 112 are locked in the unfolded position, the second locking member 20 is automatically locked into the first locking groove 21, and the supporting legs 2 are locked in the unfolded position, the bed frame remains in the unfolded state as a whole.

[0086] According to the unfolded state of the bed frame shown in FIG. 1, when the foldable bed frame is applied to a bed for children, the bed for children mainly includes the foldable bed frame and a cloth cover (not shown in the figures) arranged on the bed frame, wherein a top portion of the cloth cover can be sleeved on the upper enclosure frame 1, and the cloth cover is fixed to the two first enclosure rods 11 and the two second enclosure rods 12. A connecting cloth belt can be extended from each of the four corners at the bottom of the cloth cover, and the four connecting cloth belts extend to the four supporting legs 2 respectively, and a foot pad is arranged at the supporting end of the supporting leg 2, and a through groove for the connecting cloth belt to pass through is provided on the foot pad. The four connecting cloth belts pass through the through grooves on the four foot pads respectively, and the bottom of the cloth cover is fixed to the bed frame, so as to ensure that the cloth cover is kept in the unfolded state during use and is tidier. Certainly, when the bed for children needs to be folded, the four connecting cloth belts are removed from the four foot pads respectively to facilitate the folding of supporting legs 2.

[0087] In this embodiment, since the bed frame has an unfolded state and a folded state. When used, the bed frame is switched to the unfolded state, and when not used, the bed frame is switched to the folded state. The bed for children is folded as the bed frame is folded, reducing the space occupied by the bed for children, thereby ensuring convenient storage and carrying. The cloth cover of the bed for children is disposed on the bed frame, which can be unfolded as the bed frame is unfolded and can be folded as the bed frame is folded, thus, the operations for unfolding and folding are very convenient.

[0088] In summary, in this technical solution, the foldable bed frame mainly includes: an upper enclosure frame 1 and four supporting legs 2 rotatably connected to the upper enclosure frame 1, the upper enclosure frame 1 includes two first enclosure rods 11 and two second enclosure rods 12, each of the first enclosure rods 11 includes a first rod member 111 and a second rod member 112. In actual use, when the bed frame is switched from the unfolded state to the folded state: the two first enclosure rods 11 rotate and fold inwardly toward the center, the first rod member 111 and the second rod member 112 gradually approach each other, and the two second enclosure rods 12 gradually approach each other; the four supporting legs 2 rotate and fold upwardly close to the upper enclosure frame 1, and the supporting ends of the plurality of supporting legs 2 approach the upper enclosure frame 1. During the process of folding the bed frame, an operator only needs to press the unlocking member 114 to achieve one-button folding of the bed frame, without the need of multiple unlocking actions subsequently, and the folding is simple to operate.

[0089] Furthermore, by reasonably configuring the sizes of each part, the lengths of the first rod member 111 and the second rod member 112 in the first enclosure rod 11 are set to be equal, and equal to the length of the second enclosure rod 12. After the bed frame is folded, the length of the bed frame is the length of the second enclosure rod 12. The four supporting legs 2 are all folded toward the upper enclosure frame 1, and two supporting legs 2 are stacked on top of the other two supporting legs 2. After the bed frame is folded, the width of the bed frame is the sum of the widths of the two first connecting joints 120, the sum of the heights of the first connecting joints 120 and the heights of the connecting joints at the tops of the supporting legs 2, that is, substantially equal to the height of the folded bed frame. After the bed frame is folded, the overall volume thereof is small, the space occupied is small, so it is easy to store and carry.