Folding underframe and folding baby crib

Abstract

The invention relates to the technical field of baby products, and provides a folding underframe which comprises a center base, four supporting rods and a limiting assembly. Four first rotating grooves are formed in the lower side of the center base at intervals in the circumferential direction of the center base, and a mounting groove is formed in the center of the lower side of the center base; one end of each supporting rod is rotationally connected into the corresponding first rotating groove; the limiting assembly comprises a rotating column, a limiting seat and a torsional spring; the rotating column is coaxially and rotationally connected to the central seat; the limiting base is arranged at the lower end of the rotating column and located on the lower side of the center base. The torsion spring is installed in the installation groove, one end of the torsion spring abuts against the center base, and the other end of the torsion spring abuts against the limiting base so as to drive the limiting base to rotate. Therefore, the use safety of the folding baby crib can be ensured. In addition, the invention further provides a folding baby crib.

Description

Technical Field

[0001] The present application relates to the field of baby products, and in particular to a folding base frame and a folding baby crib. Background Art

[0002] A crib is a bed for infants and young children. Among them, a folding crib is a widely used type of crib. It uses a mechanical structure to fold it for easy storage and transportation. It is suitable for small families or families who need to carry the crib frequently.

[0003] In the related art, a Chinese invention patent with announcement number CN107212682A discloses a portable folding baby bed. When in use, the stretch rope is pulled upward manually, and the stretch rope drives the center seat to move upward, and the center seat drives the center seat support tube to move upward, and the center seat support tube drives the four bed legs to retract toward the center seat, so that the center seat support tube drives the long-joint standing tube and the short-joint standing tube to close together during the contraction; similarly, when unfolding the baby bed, the stretch rope is manually held and the center seat is pushed downward, and the center seat drives the center seat support tube to move downward, and the center seat support tube drives the bed legs to unfold outward, and the bed legs drive the long-joint standing tubes to open.

[0004] However, in actual application, there is a certain space between the crib and the ground. When a domestic pet crawls into the bottom of the crib, it is easy to push the center seat upward, which may cause the center seat to collapse, making the crib unstable and affecting the safety of the crib. Therefore, improvement is needed. Summary of the invention

[0005] In order to ensure the safety of the folding baby crib, in a first aspect, the present application provides a folding base frame.

[0006] The foldable chassis provided in this application adopts the following technical solution: A folding base frame comprises a center seat, four support rods and a limit assembly; four first rotation grooves are provided on the lower side of the center seat along its own circumference, and a mounting groove is provided at the center of the lower side of the center seat; one end of each of the support rods is rotatably connected to each of the first rotation grooves; the limit assembly comprises a rotating column, a limit seat and a torsion spring; the rotating column is coaxially rotatably connected to the center seat; the limit seat is arranged at the lower end of the rotating column and located at the lower side of the center seat; the torsion spring is installed in the mounting groove, and one end of the torsion spring abuts against the center seat, and the other end abuts against the limit seat to drive the limit seat to rotate; wherein, when the folding base frame is in the unfolded state, the limit seat abuts against two of the relatively arranged support rods under the drive of the torsion spring to limit the rotation of the two support rods.

[0007] By adopting the above technical solution, in actual application, one end of the four support rods away from the center seat abuts against the ground, pressing the center seat downward, so that each support rod rotates in each first rotation groove, so that the folding base frame is in an unfolded state, and the limit seat is coaxially connected to the center seat through a rotating column, and the limit seat is driven by a torsion spring to rotate to the bottom of two of the support rods, so that the limit seat abuts against the two support rods to limit the rotation of the support rods. Even if the lower side of the center seat is subjected to an upward force, the support rods cannot be rotated to fold, thereby ensuring the safety of the folding baby bed.

[0008] Preferably, the limiting assembly further includes a handle, and the handle is arranged at the upper end of the rotating column.

[0009] By adopting the above technical solution, a handle is set to facilitate the rotation of the rotating column to drive the limit seat to rotate, so that the limit seat is away from the bottom of the two support rods, and then the center seat is pulled upward by the handle to realize the rotation of each support rod, thereby facilitating the folding of the folding base frame.

[0010] Preferably, an embedding groove for embedding the handle is opened on the upper side of the central seat, and the handle is rotatably connected to the rotating column.

[0011] By adopting the above technical solution and setting an embedding groove, the handle can be rotated to a horizontal state and embedded in the embedding groove to achieve storage of the handle. At the same time, when the handle abuts against the two ends of the embedding groove, the rotation range of the rotating column can be limited, so that the limit seat can abut against the two support rods more stably and accurately.

[0012] Preferably, the limiting seat is detachably connected to the rotating column.

[0013] By adopting the above technical solution, the limiting column is detachably connected to the rotating column, so that the rotating column, the limiting seat and the handle can be installed on the central seat.

[0014] Preferably, the limit assembly also includes a connecting bolt, the limit seat is provided with a limit groove along its circumference, the upper end of the connecting bolt is movably inserted into the limit groove and is threadedly connected to the center seat, and the lower end of the connecting bolt abuts against the limit seat.

[0015] By adopting the above technical solution, a connecting bolt is provided to improve the stability of the installation of the limit seat, and the connecting bolt is movably inserted into the limit slot to guide the rotation of the limit seat, thereby improving the stability of the rotation of the limit seat, and when the connecting bolt abuts against the two ends of the limit slot, the rotation range of the rotating column can be limited, so that the limit seat can abut against the two support rods more stably and accurately.

[0016] Preferably, the folding base frame also includes two reinforcing rods, and two second rotation grooves are opened on the lower side of the center seat. The two second rotation grooves are arranged opposite to each other and are located between two different support rods, and one end of each reinforcing rod is rotatably connected to each second rotation groove.

[0017] By adopting the above technical solution, two reinforcing rods are provided and rotated so that the ends of the two reinforcing rods away from the center seat also abut against the ground, so as to improve the stability of the folding base frame placed on the ground, thereby improving the stability of the folding baby bed in use.

[0018] Preferably, the limiting assembly further comprises two limiting sleeves, each limiting sleeve being arranged on each supporting rod abutting against the limiting seat; wherein, when the folding chassis is in a folded state, the limiting seat simultaneously abuts between each limiting sleeve and each reinforcing rod.

[0019] By adopting the above technical solution and providing two limit sleeves, when the folding chassis is in the folded state, the limit seat abuts against the limit sleeve and the reinforcing rod at the same time to limit the rotation of the limit seat, thereby ensuring the stability of the folding chassis in the folded state.

[0020] Preferably, the limiting assembly further includes two springs, each limiting sleeve is slidably connected to each supporting rod, and each spring is arranged between each limiting sleeve and each supporting rod to drive the limiting sleeve to approach the center seat.

[0021] By adopting the above technical solution and arranging two springs, when the folding chassis is in the unfolded state, the spring drives the limit sleeve close to the center seat so that the limit sleeve is pressed against the limit seat, thereby improving the stability of the folding chassis in the unfolded state; when the folding chassis is in the folded state, the spring drives the limit sleeve close to the center seat so that the limit sleeve is pressed against the center seat, thereby improving the stability of the folding chassis in the folded state.

[0022] Preferably, the limiting assembly further includes two limiting bolts, the support rod is provided with a sliding groove along its length direction, and each limiting bolt is threadedly connected to each limiting sleeve and movably penetrates the sliding groove.

[0023] By adopting the above technical solution, a limit bolt is set, and the limit bolt is movably inserted into the sliding groove to improve the stability of the limit sleeve sliding connection to the support rod, and the limit bolt can be threadedly connected to the bed frame of the folding baby bed, which can further improve the stability of the folding bed frame in the unfolded state.

[0024] In a second aspect, the present application provides a folding crib.

[0025] The folding crib provided in this application adopts the following technical solution: A folding baby bed comprises the folding base frame described above.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. In actual application, one end of the four support rods away from the center seat is abutted against the ground, and the center seat is pressed downward, so that each support rod rotates in each first rotation groove, so that the folding base frame is in an unfolded state, and the limit seat is coaxially connected to the center seat through the rotation column, and the limit seat is driven by the torsion spring to rotate to the bottom of two of the support rods, so that the limit seat abuts against the two support rods to limit the rotation of the support rods. Even if the lower side of the center seat is subjected to an upward force, each support rod cannot rotate to fold, thereby ensuring the safety of the folding baby bed; 2. By setting a handle, it is convenient to rotate the rotating column to drive the limit seat to rotate, so that the limit seat is away from the bottom of the two support rods, and then the center seat is pulled upward by the handle to realize the rotation of each support rod, so as to facilitate the folding of the folding chassis; 3. By providing two limit sleeves, when the folding chassis is in the folded state, the limit seat abuts against the limit sleeve and the reinforcing rod at the same time to limit the rotation of the limit seat, thereby ensuring the stability of the folding chassis in the folded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the folding chassis in Example 1 of the present application in an unfolded state; Figure 2 is a schematic diagram of an exploded structure of the folding chassis in Example 1 of the present application in an unfolded state; Figure 3 is a schematic diagram of the overall structure of the foldable chassis in Example 1 of the present application in a folded state; Figure 4 is a schematic diagram of the overall structure of the folding chassis in Example 2 of the present application in an unfolded state; Figure 5 It is a schematic diagram of the overall structure of the foldable baby bed in the embodiment of the present application.

[0028] Figure numerals: 1. Center seat; 11. First rotating groove; 12. Mounting groove; 13. Embedded groove; 14. Second rotating groove; 2. Support rod; 21. Sliding groove; 3. Limiting assembly; 31. Rotating column; 32. Limiting seat; 321. Limiting groove; 322. Groove; 33. Torsion spring; 34. Handle; 35. Connecting bolt; 36. Limiting sleeve; 37. Spring; 38. Limiting bolt; 4. Reinforcing rod; 5. Bracket. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] The embodiment of the present application discloses a folding chassis.

[0031] Embodiment 1: Reference Figure 1 and Figure 2 The folding chassis includes a center seat 1, four support rods 2 and a limit assembly 3. The center seat 1 is arranged in a disc shape. Four first rotation grooves 11 are opened on the lower side of the center seat 1. The four first rotation grooves 11 are arranged at intervals along the circumference of the center seat 1. At the same time, a mounting groove 12 is opened on the lower side of the center seat 1. The mounting groove 12 is coaxially arranged with the center seat 1. The four support rods 2 correspond to the four first rotation grooves 11. One end of each support rod 2 is rotatably connected to each first rotation groove 11, and the other end abuts against the ground.

[0032] The limiting assembly 3 includes a rotating column 31, a limiting seat 32 and a torsion spring 33. The rotating column 31 is coaxially connected to the center seat 1 and both the upper and lower ends protrude from the center seat 1. The limiting seat 32 is fixedly connected to the lower end of the rotating column 31 so that the limiting seat 32 is located at the lower side of the center seat 1. The torsion spring 33 is installed in the installation groove 12, and one end of the torsion spring 33 abuts against the center seat 1, and the other end abuts against the limiting seat 32 to drive the limiting seat 32 to rotate.

[0033] In actual application, when the folding base frame is in the unfolded state, the limit seat 32 is rotatably connected to the center seat 1 through the rotating column 31 which is coaxially rotatably connected to the center seat 1, and the limit seat 32 is driven by the torsion spring 33 to rotate to the bottom of two oppositely arranged support rods 2, so that the upper side of the limit seat 32 abuts against the two support rods 2 at the same time to limit the rotation of the two support rods 2. Even if the lower side of the center seat 1 is subjected to an upward force, the support rods 2 cannot be rotated to fold, so as to ensure that the folding base frame is stably in the unfolded state, thereby ensuring the safety of the folding baby bed.

[0034] Reference Figure 1 and Figure 3 , wherein one end of the four support rods 2 away from the center seat 1 abuts against the ground, and by rotating the rotating column 31, the limit seat 32 releases the abutment on the two support rods 2, and the center seat 1 is pulled upward, so that each support rod 2 rotates in each first rotating groove 11, so that the folding abutment is in a folded state. Similarly, by pressing the center seat 1 downward, each support rod 2 rotates in each first rotating groove 11, so that the folding chassis is in an unfolded state, which can ensure the normal unfolding and folding of the folding chassis.

[0035] In some embodiments, the limit assembly 3 also includes a handle 34, which is installed at the upper end of the rotating column 31 for the user to hold. This makes it convenient to apply force to rotate the rotating column 31 so that the limit seat 32 is away from the bottom of the two support rods 2. It is also convenient to apply force to pull the center seat 1 upward, thereby facilitating the rapid folding of the folding frame.

[0036] In some embodiments, a groove 13 is provided on the upper side of the center seat 1, and the groove 13 is used to embed a handle 34, and the handle 34 is rotatably connected to the rotating column 31. By rotating the handle 34, the handle 34 is in a horizontal state, so that the handle 34 is embedded in the groove 13, so as to store the handle 34, save space, and avoid interference with other parts of the folding baby bed. At the same time, when the handle 34 abuts against the two ends of the groove 13, the rotation of the rotating column 31 can be restricted, so as to limit the range of rotation of the rotating column 31, so that the limit seat 32 can be more stably and accurately abutted against the two support rods 2.

[0037] In some embodiments, the limit seat 32 is detachably connected to the rotating column 31. In this embodiment, the limit seat 32 and the rotating column 31 are fixed by bolts to realize the detachable connection between the limit seat 32 and the rotating column 31. In other embodiments, it can be realized by means of snap connection, plug-in connection, etc., which is not limited by this application. During the installation of the limit assembly 3, the lower end of the rotating column 31 is first inserted into the center seat 1 so that the handle 34 abuts against the embedded groove 13 of the center seat 1. At this time, the limit seat 32 is sleeved on the lower end of the rotating column 31 and fixed by bolts. The operation is simple and convenient, so that the rotating column 31, the limit seat 32 and the handle 34 are easily installed on the center seat 1.

[0038] Reference Figure 2 In some embodiments, the limiting assembly 3 further includes a connecting bolt 35, and the limiting seat 32 is provided with a limiting groove 321 along its circumference. The upper end of the connecting bolt 35 is movably inserted into the limiting groove 321 and is threadedly connected to the center seat 1, so that the lower end of the connecting bolt 35 abuts against the lower side of the limiting seat 32, thereby improving the stability of the installation of the limiting seat 32. In addition, the connecting bolt 35 is movably inserted into the limiting groove 321 to guide the rotation of the limiting seat 32, thereby improving the stability of the rotation of the limiting seat 32, and when the connecting bolt 35 abuts against the two ends of the limiting groove 321, the range of rotation of the rotating column 31 can be limited, so that the limiting seat 32 can abut against the two support rods 2 more stably and accurately. It should be noted that the number of the connecting bolt 35 and the limiting groove 321 are both two.

[0039] Reference Figure 1 and Figure 2In some embodiments, the folding base frame also includes two reinforcing rods 4. Two second rotation grooves 14 are opened on the lower side of the center seat 1. The two second rotation grooves 14 are arranged opposite to each other and are located between two different support rods 2. One end of each reinforcing rod 4 is rotatably connected to each second rotation groove 14, and the other end is abutted against the ground to improve the stability of the folding base frame placed on the ground, that is, to improve the stability of the folding base frame in the unfolded state, thereby improving the stability of the folding baby bed in use.

[0040] Reference Figure 2 and Figure 3 In some embodiments, the limiting assembly 3 further includes two limiting sleeves 36, which are arranged corresponding to the two support rods 2 abutting against the limiting seat 32, each limiting sleeve 36 is fixedly connected to each support rod 2, and the reinforcing rod 4 is located in the opposite direction of the rotation of the limiting seat 32 driven by the torsion spring 33. When the base frame is in the folded state, the limiting seat 32 abuts against the limiting sleeve 36 and the reinforcing rod 4 at the same time, and the reinforcing rod 4 is partially located in the groove 322 of the limiting seat 32 to limit the rotation of the limiting seat 32, thereby ensuring the stability of the folding base frame in the folded state.

[0041] The implementation principle of this embodiment is as follows: in actual application, when the folding base frame is in the unfolded state, the limit seat 32 is rotatably connected to the center seat 1 through the rotating column 31 which is coaxially rotatably connected to the center seat 1, and the limit seat 32 is driven by the torsion spring 33 to rotate to the bottom of two oppositely arranged support rods 2, so that the upper side of the limit seat 32 abuts against the two support rods 2 at the same time to limit the rotation of the two support rods 2. Even if the lower side of the center seat 1 is subjected to an upward force, the support rods 2 cannot be rotated to fold, so as to ensure that the folding base frame is stably in the unfolded state, thereby ensuring the safety of the folding baby bed.

[0042] Among them, one end of the four support rods 2 away from the center seat 1 is in contact with the ground, and by rotating the rotating column 31, the limit seat 32 releases the contact with the two support rods 2, and the center seat 1 is pulled upward, so that each support rod 2 rotates in each first rotating groove 11, so that the folding contact is in a folded state. Similarly, by pressing the center seat 1 downward, each support rod 2 rotates in each first rotating groove 11, so that the folding chassis is in an unfolded state, which can ensure the normal unfolding and folding of the folding chassis.

[0043] Embodiment 2: Reference Figure 4, the other structures of this embodiment are the same as those of the embodiment 1, except that each limiting sleeve 36 is slidably connected to each support rod 2, and the sliding direction is the length direction of the support rod 2. At the same time, the limiting assembly 3 also includes a spring 37, one end of the spring 37 is fixedly connected to the support rod 2, and the other end is fixedly connected to the limiting sleeve 36, so as to drive the limiting sleeve 36 close to the center seat 1. When the folding chassis is in the unfolded state, the spring 37 drives the limiting sleeve 36 close to the center seat 1, so that the limiting sleeve 36 is pressed against the end of the limiting seat 32 to limit the rotation of the limiting seat 32, thereby improving the stability of the folding chassis in the unfolded state. When the folding chassis is in the folded state, the spring 37 drives the limiting sleeve 36 close to the center seat 1, so that the limiting sleeve 36 is pressed against the lower side of the center seat 1 to limit the rotation of the support rod 2, thereby improving the stability of the folding chassis in the folded state.

[0044] In some embodiments, the limiting assembly 3 further includes two limiting bolts 38, and the support rod 2 is provided with a penetrating sliding groove 21 along its length direction. The upper end of each limiting bolt 38 is threadedly connected to each limiting sleeve 36, and the limiting bolt 38 is movably arranged in the sliding groove 21 to limit the rotation of the limiting sleeve 36, thereby improving the stability of the limiting sleeve 36 slidingly connected to the support rod 2. More importantly, the limiting bolt 38 is also threadedly connected to the bed frame of the folding baby bed located above the folding base frame to limit the displacement of the limiting sleeve 36, so that the limiting sleeve 36 is more stably pressed against the limiting seat 32, further improving the stability of the folding bed frame in the unfolded state. In addition, the positioning installation between the bed frame and the limiting sleeve 36 can also be achieved.

[0045] The embodiment of the present application also discloses a folding baby crib.

[0046] Reference Figure 5 The folding crib comprises a bracket 5 and the folding base frame described in the above embodiment, and one end of four support rods 2 away from the center seat 1 is fixedly connected to the bracket 5 .

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foldable chassis, characterized in that: The invention comprises a central seat (1), four support rods (2) and a limit assembly (3); the lower side of the central seat (1) is provided with four first rotation grooves (11) spaced apart along its circumferential direction, and a mounting groove (12) is provided at the center of the lower side of the central seat (1); one end of each support rod (2) is rotatably connected to each first rotation groove (11); the limit assembly (3) comprises a rotation column (31), a limit seat (32) and a torsion spring (33); the rotation column (31) is coaxially rotatably connected to the central seat (1); the limit seat (32) is provided with a mounting groove (12) at the center of the lower side of the central seat (1); one end of each support rod (2) is rotatably connected to each first rotation groove (11); the limit assembly (33) comprises a rotation column (31), a limit seat (32) and a torsion spring (33); the rotation column (31) is coaxially rotatably connected to the central seat (1); the limit seat (32 ) is arranged at the lower end of the rotating column (31) and is located at the lower side of the center seat (1); the torsion spring (33) is installed in the installation groove (12), and one end of the torsion spring (33) abuts against the center seat (1), and the other end abuts against the limit seat (32) to drive the limit seat (32) to rotate; wherein, when the folding chassis is in the unfolded state, the limit seat (32) abuts against two of the relatively arranged support rods (2) under the drive of the torsion spring (33) to limit the rotation of the two support rods (2).

2. A foldable chassis according to claim 1, characterized in that: The limiting assembly (3) further comprises a handle (34), wherein the handle (34) is arranged at the upper end of the rotating column (31).

3. A foldable chassis according to claim 2, characterized in that: An embedding groove (13) for embedding the handle (34) is provided on the upper side of the central seat (1), and the handle (34) is rotatably connected to the rotating column (31).

4. A foldable chassis according to claim 2, characterized in that: The limiting seat (32) is detachably connected to the rotating column (31).

5. A foldable chassis according to claim 4, characterized in that: The limiting assembly (3) further comprises a connecting bolt (35); the limiting seat (32) is provided with a limiting groove (321) along its circumference; the upper end of the connecting bolt (35) is movably inserted into the limiting groove (321) and is threadedly connected to the center seat (1); and the lower end of the connecting bolt (35) abuts against the limiting seat (32).

6. A foldable chassis according to claim 1, characterized in that: The folding chassis further comprises two reinforcing rods (4), and two second rotation grooves (14) are provided on the lower side of the central seat (1). The two second rotation grooves (14) are arranged opposite to each other and are located between two different support rods (2), and one end of each reinforcing rod (4) is rotatably connected to each second rotation groove (14).

7. A foldable chassis according to claim 6, characterized in that: The limiting assembly (3) further comprises two limiting sleeves (36), each limiting sleeve (36) being arranged on each supporting rod (2) abutting against the limiting seat (32); wherein when the folding chassis is in a folded state, the limiting seat (32) simultaneously abuts between each limiting sleeve (36) and each reinforcing rod (4).

8. A foldable chassis according to claim 7, characterized in that: The limiting assembly (3) further comprises two springs (37), each limiting sleeve (36) being slidably connected to each supporting rod (2), and each spring (37) being arranged between each limiting sleeve (36) and each supporting rod (2) to drive the limiting sleeve (36) to approach the central seat (1).

9. A foldable chassis according to claim 8, characterized in that: The limiting assembly (3) further comprises two limiting bolts (38), the support rod (2) is provided with a sliding groove (21) along its length direction, and each limiting bolt (38) is threadedly connected to each limiting sleeve (36) and movably penetrates the sliding groove (21).

10. A folding baby bed, characterized in that: It comprises a foldable chassis as described in any one of claims 1 to 9.

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