Folding multifunctional baby crib

Abstract

The utility model belongs to the technical field of folding baby cribs, and particularly relates to a folding type multifunctional baby crib. The bottoms of the first quadrant arc-shaped surrounding frame, the second quadrant arc-shaped surrounding frame, the third quadrant arc-shaped surrounding frame and the fourth quadrant arc-shaped surrounding frame are connected through a folding bottom frame, folding fences are connected to the inner sides of the upper ends of the adjacent edges of the four sets of surrounding frames, and a detachable and liftable two-layer bed frame is movably connected to the middles of the four sets of surrounding frames; the folding bottom frame is lifted upwards to drag and gather the four sets of surrounding frames towards the middle to form a cylindrical structure, and meanwhile all the folding fences are folded downwards to be hidden on the inner sides of the arc-shaped surrounding frames and are buckled and fixed through the top cover and the bottom cover. A gathering type folding structure is adopted, the baby crib can be folded into a columnar structure, occupied space is greatly reduced, meanwhile, structure switching is achieved through various rails and movable fasteners, the functionality of the baby crib is greatly improved, and diversified requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of folding baby cribs, in particular to a folding multifunctional baby crib. Background Art

[0002] A crib is a must-have for families raising babies. Currently, the guardrails of cribs are higher than the bed itself, requiring standing up to lift and lower a child. Some cribs have movable guardrails for easier lifting and lowering, but most use double-door openings. These systems employ latches, requiring the guardrails to be opened by opening the latch or catch to adjust them. Active children often play with the latch or catch, potentially opening it unintentionally and posing a safety hazard. Furthermore, while double-door openings are simple to operate, they take up more space, and the open guardrails can easily move, creating a safety hazard.

[0003] In addition, the bedside crib can be changed into a fence structure, and a single-side fence can be opened to connect with the adult bed. However, due to the small structure of the crib, the bed height cannot be consistent with that of the adult bed. The height difference poses certain safety hazards during the flipping process.

[0004] At the same time, the folding structure and design of traditional baby cribs are unreasonable. They all adopt a stacked folding structure, which means that the baby crib still takes up space after folding, which is not conducive to storage and carrying.

[0005] In response to the above problems, the present application provides a foldable multifunctional baby crib. Utility Model Content

[0006] In order to solve the defects and shortcomings of the existing technology, the purpose of the present invention is to provide a foldable multifunctional baby bed with a simple structure, reasonable design and easy use. It adopts a gathering folding structure, which can make the baby bed fold into a columnar structure, greatly reducing the space occupied. At the same time, it adopts a variety of tracks and movable fasteners to switch the structure, greatly improving the functionality of the baby bed and meeting diverse needs.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: it comprises a first quadrant arc-shaped enclosure, a second quadrant arc-shaped enclosure, a third quadrant arc-shaped enclosure, a fourth quadrant arc-shaped enclosure, a folding base frame, a folding fence, a two-layer bed frame, a top cover, and a bottom cover; the bottoms of the first quadrant arc-shaped enclosure, the second quadrant arc-shaped enclosure, the third quadrant arc-shaped enclosure, and the fourth quadrant arc-shaped enclosure are connected by a folding base frame, and the upper ends of the adjacent sides of the four groups of enclosures are connected with folding fences. At the same time, the middle of the four groups of enclosures is movably connected with a detachable and liftable two-layer bed frame; wherein, the folding base frame is lifted upward to drag the first quadrant arc-shaped enclosure, the second quadrant arc-shaped enclosure, the third quadrant arc-shaped enclosure, and the fourth quadrant arc-shaped enclosure toward the middle to form a cylindrical structure. At the same time, each folding fence is folded downward and hidden inside the arc-shaped enclosure, and is folded and fixed by buckling the top cover, the bottom cover and the arc-shaped enclosure.

[0008] Preferably, the first quadrant arc-shaped enclosure and the second quadrant arc-shaped enclosure have the same structure, and the first quadrant arc-shaped enclosure comprises a top corner, a bottom corner, a column tube, a folding rod plug-in joint, a base frame fixing seat, a buckle, a roller, a lifting rail, a limiting socket, and a lifting slider; a pair of movable folding rod plug-ins are respectively connected on both sides of the inner side of the upper end of the top corner, a base frame fixing seat is provided in the middle of the inner side of the bottom corner, and a buckle is provided on both sides of the inner side of the bottom corner, and a roller is inserted in the middle of the bottom of the bottom corner; several column tubes are inserted between the top corner and the bottom corner, the middle column tube is provided with a lifting rail, a limiting socket is provided on the inner wall of the lifting rail, and a lifting slider is movably connected with the lifting rail.

[0009] Preferably, the lifting slider includes a base, a plug-in boss, a track pulley, a positioning pin, a buckle, a snap-in groove, and a fixed pin; an integral plug-in boss is provided on the outer side of the base, a pair of track pulleys are connected to the upper and lower ends of the plug-in boss respectively, and a positioning pin with a reset spring is inserted in the middle of the plug-in boss, and the tail of the positioning pin is connected to the buckle movably buckled on the upper end of the base through the fixed pin to realize the unlocking linkage of the positioning pin; a snap-in groove is provided at the tail of the base.

[0010] Preferably, the third quadrant arc-shaped enclosure and the fourth quadrant arc-shaped enclosure have the same structure, and the third quadrant arc-shaped enclosure adds a second lifting track and a fence lifting joint on the basis of the first quadrant arc-shaped enclosure; a second lifting track is provided in the middle of the side column tube, and the internal movable clamp of the second lifting track is connected with the fence lifting joint.

[0011] Preferably, the fence lifting joint includes an outer shell, a rail clamping seat, a driving slider, a finger buckle, a positioning pin, a return spring, and a stepped slope; a rail clamping seat is provided on the inner side of the front end of the outer shell, and the rail clamping seat is interspersed with a positioning pin through the return spring, and a driving slider is movably provided inside the outer shell, and a stepped slope is provided at the front end of the driving slider, and the stepped slope is fitted with the tail of the positioning pin to realize telescopic top support; the tail of the driving slider is connected to the finger buckle at the lower end of the tail of the outer shell.

[0012] Preferably, the folding base frame includes a midsole pier, a cross-link, an auxiliary link, a connecting piece, a folding pier, a block, a rotating seat, and a handle; four groups of cross-links are symmetrically connected to the outer side of the midsole pier through a pin shaft, the top ends of the second and fourth cross-links of the four groups of cross-links are connected to blocks, the blocks are clamped in the reserved groove in the middle of the midsole pier, and the first and third quadrants of the four groups of cross-links are horizontally connected with auxiliary links through connecting pieces, and a folding pier is arranged in the middle of the auxiliary links; wherein, the middle of the midsole pier is connected to the rotating seat through a spring shaft, the middle of the rotating seat is clamped with a handle, and the outer side of the rotating seat is provided with a pair of symmetrical engaging grooves, which are engaged with the inner grooves of the end of the block through the tooth grooves.

[0013] Preferably, the top end of the cross-link is connected to the base frame fixing seat at the bottom of the first quadrant arc frame, the second quadrant arc frame, the third quadrant arc frame and the fourth quadrant arc frame through a pin, thereby realizing the movable connection between the folding base frame and the four groups of arc frames.

[0014] Preferably, the folding fence includes left and right connecting rods and a folding joint. The left and right connecting rods are movably connected on both sides of the folding joint through rivets. A push switch with a return spring is movably connected to the inner side of the lower end of the folding joint. A pair of linkage limit rods are inserted in the middle guide groove of the push switch; the push switch is pressed to retract the linkage limit rod inward to unlock the limitation of the linkage limit rod on the end of the left and right connecting rods.

[0015] Preferably, the two ends of the folding fence are plugged into the folding rod plug joint to form a fixed fence, and the two ends of the folding fence are plugged into the fence lifting joint to form a liftable fence.

[0016] Preferably, the second-layer bed frame includes a left bed frame and a right bed frame; the left bed frame and the right bed frame are connected by means of plug-in pins, and the four corners of the second-layer bed frame are connected to the clamping groove at the tail of the lifting slider through the outward-expanding support arms.

[0017] After adopting the above structure, the beneficial effects of the utility model are:

[0018] The folding structure is compact, which greatly reduces the volume after folding, reduces space occupation and improves portability.

[0019] The second-layer bed frame can be adjusted up and down, and when combined with the mattress, it can make the baby bed and the adult bed flush, thus improving safety.

[0020] The mattress on the second-level bed frame is replaced with a hard table top, turning the traditional crib into a children's table, greatly improving its functional diversity to meet the needs of life and games. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail through the following specific implementations and drawings.

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the folded state of the utility model;

[0024] Figure 3 This is a second schematic diagram of the folded state of the utility model;

[0025] Figure 4 This is a schematic structural diagram of the first quadrant arc-shaped enclosure 1 and the second quadrant arc-shaped enclosure 2 of the present invention;

[0026] Figure 5 This is a structural diagram of the lifting slider 19 of the present utility model;

[0027] Figure 6 This is a schematic diagram of the internal linkage structure of the lifting slider 19 of the present utility model;

[0028] Figure 7 This is a schematic structural diagram of the third quadrant arc-shaped enclosure 1 and the fourth quadrant arc-shaped enclosure 2 of the present invention;

[0029] Figure 8 This is a schematic structural diagram of the fence lifting joint 32 of the present utility model;

[0030] Figure 9 This is a schematic diagram of the internal structure of the fence lifting joint 32 of the present utility model;

[0031] Figure 10 This is a cross-sectional view of the fence lifting joint 32 of the present utility model;

[0032] Figure 11 This is a schematic structural diagram of the folding chassis 5 of the present utility model;

[0033] Figure 12 This is a schematic diagram of the structure of the middle pier of the midsole pier 51 of the present invention;

[0034] Figure 13This is a schematic structural diagram of the folding fence 6 of the present utility model;

[0035] Figure 14 This is a schematic structural diagram of a two-layer bed frame 7 of the present utility model;

[0036] Description of the accompanying drawings: first quadrant arc-shaped enclosure 1, second quadrant arc-shaped enclosure 2, third quadrant arc-shaped enclosure 3, fourth quadrant arc-shaped enclosure 4, folding base frame 5, folding fence 6, second-layer bed frame 7, top cover 8, bottom cover 9, top angle 10, bottom angle 11, column tube 12, folding rod plug joint 13, base frame fixing seat 14, buckle 15, roller 16, lifting track 17, limit socket 18, lifting slider 19, base 191, plug-in protrusion 192, track pulley 193, positioning pin 194, pull buckle 195, clamping groove 196, Fixed pin 197, second lifting track 31, fence lifting joint 32, outer shell 33, track clamping seat 34, driving slider 35, finger pull buckle 36, positioning pin shaft 37, return spring 38, step slope 39, mid-bottom pier seat 51, cross connecting rod 52, auxiliary connecting rod 53, connecting piece 54, folding pier seat 55, block 56, rotating seat 57, handle 58, bite groove 59, left and right connecting rods 61, folding joint 62, press switch 63, press switch 63, linkage limit rod 64, left bed frame 71, right bed frame 72. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0038] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0039] See Figure 1-Figure 3As shown, this specific embodiment adopts the following technical solution: it includes a first quadrant arc-shaped enclosure 1, a second quadrant arc-shaped enclosure 2, a third quadrant arc-shaped enclosure 3, a fourth quadrant arc-shaped enclosure 4, a folding base frame 5, a folding fence 6, a second-layer bed frame 7, a top cover 8, and a bottom cover 9; the bottoms of the first quadrant arc-shaped enclosure 1, the second quadrant arc-shaped enclosure 2, the third quadrant arc-shaped enclosure 3, and the fourth quadrant arc-shaped enclosure 4 are connected by a folding base frame 5, and the upper ends of the adjacent sides of the four groups of enclosures are connected by a folding base frame 5. A folding fence 6 is connected to the inside, and at the same time, a detachable and liftable two-layer bed frame 7 is movably connected in the middle of the four groups of frames; wherein, the folding base frame 5 is pulled upward to drag the first quadrant arc-shaped frame 1, the second quadrant arc-shaped frame 2, the third quadrant arc-shaped frame 3, and the fourth quadrant arc-shaped frame 4 toward the middle to form a cylindrical structure. At the same time, each folding fence 6 is folded downward and hidden inside the arc-shaped frame, and is folded and fixed by buckling with the top cover 8, the bottom cover 9 and the arc-shaped frame.

[0040] Furthermore, the double-decker bed frame 7 is an expandable structure that requires separate storage. A mattress can be placed on the top of the double-decker bed frame 7 for sleeping, and the folding base frame 5 can also be used as a spare mattress to form a bunk bed. Furthermore, the top of the double-decker bed frame 7 can be flattened with a hard tabletop, and the single-sided folding fence 6 can be lowered to convert it into a children's table. The folding fence 6 is wrapped with an elastic net hanging below for peripheral protection. The lower edge of the elastic net is connected to the curved frame or the folding base frame 5. Furthermore, the folding fence 6 can also be attached to an external storage rack.

[0041] See Figure 4 、 Figure 7 The first quadrant arc-shaped enclosure 1 and the second quadrant arc-shaped enclosure 2 have the same structure, and the third quadrant arc-shaped enclosure 3 and the fourth quadrant arc-shaped enclosure 4 have the same structure. The third quadrant arc-shaped enclosure 3 adds a second lifting track 31 on the basis of the first quadrant arc-shaped enclosure 1, and uses the fence lifting joint 32 to replace part of the folding rod plug joint 13 to make the single-sided fence liftable.

[0042] Furthermore, the first quadrant arc-shaped enclosure 1 and the second quadrant arc-shaped enclosure 2 include a top corner 10, a bottom corner 11, a column tube 12, a folding rod plug-in connector 13, a bottom frame fixing seat 14, a buckle 15, a roller 16, a lifting track 17, a limit socket 18, and a lifting slider 19. A pair of movable folding rod plug-ins 13 are connected to the inner sides of the top corner 10, a bottom frame fixing seat 14 is provided in the middle of the inner side of the bottom corner 11, and a buckle 15 is provided on both inner sides of the bottom corner 11. A roller 16 is inserted in the middle of the bottom of the bottom corner 11. Several column tubes 12 are inserted between the top corner 10 and the bottom corner 11. The middle column tube 12 is provided with a lifting track 17. The inner wall of the lifting track 17 is provided with a limit socket 18, and the lifting slider 19 is movably connected to the lifting track 17. A second lifting track 31 is provided in the middle of the side column tube 12, and the inner side of the second lifting track 31 is movably connected to the fence lifting joint 32. The top cover 8 is fixed by engaging with the four groups of hollow columns on the lower edge and the circular grooves on the top ends of the top corners 10, and the bottom cover 9 is fixed by engaging with the upturned ears on the upper edge and the buckles 15 on the inner sides of the bottom corners 11, so that the first quadrant arc frame 1 and the second quadrant arc frame 2 have the same structure, and the third quadrant arc frame 3 and the fourth quadrant arc frame 4 remain in close fit.

[0043] See Figure 5 、 Figure 6 The lifting slider 19 includes a base 191, a plug-in protrusion 192, a track pulley 193, a positioning pin 194, a buckle 195, a snap-fit ​​groove 196, and a connecting rod 197; a plug-in protrusion 192 is provided on the outer side of the base 191, and a pair of track pulleys 193 are connected to the upper and lower ends of the plug-in protrusion 192 respectively, and a positioning pin 194 with a reset spring is inserted in the middle of the plug-in protrusion 192, and the tail of the positioning pin 194 is connected to the buckle 195 movably buckled on the upper end of the base 191 through a fixed pin 197 to realize the unlocking linkage of the positioning pin 194; a snap-fit ​​groove 196 is provided at the tail of the base 191. The side walls of the base 191 are respectively provided with a pair of slide grooves, and the fixing pins 197 are inserted into the slide grooves and fixed by end bolts, so that the pull buckle 195 can slide left and right on the surface of the base 191. When the pull buckle 195 is manually dragged backward, due to the linkage action of the fixing pin 197, the positioning pin piece 194 simultaneously moves backward and disengages from the limit hole 18. At this time, the lifting slider 19 can slide along the lifting track 17, and the other three groups of lifting sliders 19 are adjusted synchronously to achieve the height adjustment of the second-layer bed frame 7.

[0044] See Figure 8-Figure 9The fence lifting joint 32 includes an outer shell 33, a track clamping seat 34, a driving slider 35, a finger buckle 36, a positioning pin 37, a return spring 38, and a stepped slope 39; a track clamping seat 34 is provided on the inner side of the front end of the outer shell 33, and a positioning pin 37 is inserted through the track clamping seat 34 through the return spring 38, and a driving slider 35 is movably provided inside the outer shell 33, and a stepped slope 39 is provided at the front end of the driving slider 35 to fit with the tail of the positioning pin 37 to realize telescopic support; the tail of the driving slider 35 is connected to the finger buckle 36 at the lower end of the tail of the outer shell 33. When adjusting the lifting fence, the finger pull buckles 36 at the lower ends of the left and right fence lifting joints 32 are simultaneously pressed to pull the drive slider 35 backward. At this time, the contact surface between the tail of the positioning pin shaft 37 and the step slope 39 changes (sliding from the high platform to the low platform). The positioning pin shaft 37 retracts inward under the action of the reset spring 38 to unlock the fixation of the fence lifting joint 32, and the front fence can be lifted and lowered along the second lifting track 31.

[0045] See 11. Figure 12 The folding base frame 5 includes a mid-bottom pier seat 51, a cross-link 52, an auxiliary link 53, a connecting piece 54, a folding pier seat 55, a block 56, a rotating seat 57, and a handle 58; four groups of cross-links 52 are symmetrically connected to the outside of the mid-bottom pier seat 51, and the top ends of the second and fourth cross-links 52 of the four groups of cross-links 52 are connected with blocks 56, and the blocks 56 are clamped in the reserved groove in the middle of the mid-bottom pier seat 51, and the auxiliary links 53 are horizontally connected between the first and third quadrants of the four groups of cross-links 52 through connecting pieces 54, and a folding pier seat 55 is provided in the middle of the auxiliary links 53; wherein, the middle of the mid-bottom pier seat 51 is connected to a rotating seat 57 through a spring shaft, and a handle 58 is clamped in the middle of the rotating seat 57, and a pair of symmetrical engaging grooves 59 are provided on the outside of the rotating seat 57, and the engaging grooves 59 are kept in engagement with the block 56 at the top end of the cross-link 52 through the tooth grooves. The lower ends of the mid-bottom pier 51 and the folding pier 55 are connected to an integral support leg, which provides sufficient support for the folding base frame 5 to prevent deformation and collapse.

[0046] Furthermore, the top end of the cross-link 52 is connected to the base frame fixing seat 14 at the bottom of the first quadrant arc-shaped enclosure 1, the second quadrant arc-shaped enclosure 2, the third quadrant arc-shaped enclosure 3, and the fourth quadrant arc-shaped enclosure 4, thereby achieving the connection and fixation between the folding base frame 5 and the four groups of arc-shaped enclosures. When the folding base frame 5 is folded, the handle 58 is first used to drive the rotating seat 57 to rotate to the side, so that the engagement groove 59 and the block 56 are disconnected, and then the folding pier 55 is pulled upward using the handle 58. During the upward movement of the folding pier 55, the cross-link 52 is synchronously moved upward and pulls the four outer groups of arc-shaped enclosures inward. At this time, the auxiliary link 53 is synchronously bent to push the folding pier 55 upward.

[0047] See Figure 13 The folding fence 6 includes left and right connecting rods 61 and a folding joint 62. The left and right connecting rods 61 are movably connected on both sides of the folding joint 62 by rivets. The inner side of the lower end of the folding joint 62 is movably connected with a press switch 63. A pair of linkage limit rods 64 are inserted in the middle guide groove of the press switch 63; the press switch 63 presses the linkage limit rod 64 to retract inward to unlock the linkage limit rod 64 on the end of the left and right connecting rods 61, so that the left and right connecting rods 61 can be folded downward; the two ends of the folding fence 6 are inserted into the folding rod plug joint 13 and fixed with bolts to form a fixed fence, and the two ends of the folding fence 6 are inserted into the fence lifting joint 32 and fixed with bolts to form a liftable fence.

[0048] See Figure 14 The second-tier bed frame 7 comprises a left bed frame 71 and a right bed frame 72. The left bed frame 71 and the right bed frame 72 are connected by a plug-in pin, and the four corners of the second-tier bed frame 7 are connected to the clamping groove 196 at the rear end of the lifting slider 19 via outward-expanding support arms. The second-tier bed frame 7 is fixed to the clamping groove 196 by the ridges on the inner wall of the clamping groove 196.

[0049] The beneficial effects of this specific embodiment are: it adopts a gathering-type folding structure, which greatly reduces the volume after folding, reduces space occupancy, and improves portability; the second-layer bed frame can be raised and lowered and adjusted, and with the mattress, it can make the baby bed and adult bed keep flush, improving safety of use; the mattress on the second-layer bed frame is replaced with a hard table board, so that the traditional baby bed is transformed into a children's table, and the functional diversity is greatly improved to meet the needs of life and games.

Claims

1. A foldable multifunctional baby bed, characterized by: It comprises a first quadrant arc-shaped enclosure, a second quadrant arc-shaped enclosure, a third quadrant arc-shaped enclosure, a fourth quadrant arc-shaped enclosure, a folding base frame, a folding fence, a second-layer bed frame, a top cover, and a bottom cover; the bottoms of the first quadrant arc-shaped enclosure, the second quadrant arc-shaped enclosure, the third quadrant arc-shaped enclosure, and the fourth quadrant arc-shaped enclosure are connected by a folding base frame, and the inner sides of the upper ends of adjacent sides of the four groups of enclosures are connected with folding fences. At the same time, the middle of the four groups of enclosures is movably connected with a detachable and liftable second-layer bed frame; wherein, the folding base frame is pulled upward to drag the first quadrant arc-shaped enclosure, the second quadrant arc-shaped enclosure, the third quadrant arc-shaped enclosure, and the fourth quadrant arc-shaped enclosure toward the middle to form a cylindrical structure. At the same time, each folding fence is folded downward and hidden inside the arc-shaped enclosure, and is folded and fixed by buckling the top cover, the bottom cover and the arc-shaped enclosure.

2. The foldable multifunctional baby crib according to claim 1, characterized in that: The first quadrant arc-shaped enclosure and the second quadrant arc-shaped enclosure have the same structure. The first quadrant arc-shaped enclosure comprises a top corner, a bottom corner, a column tube, a folding rod plug joint, a base frame fixing seat, a buckle, a roller, a lifting rail, a limit socket, and a lifting slider; a pair of movable folding rod plug joints are respectively connected on both sides of the inner side of the upper end of the top corner, a base frame fixing seat is provided in the middle of the inner side of the bottom corner, and a buckle is provided on both sides of the inner side of the bottom corner, and a roller is inserted in the middle of the bottom of the bottom corner; several column tubes are inserted between the top corner and the bottom corner, the middle column tube is provided with a lifting rail, a limit socket is provided on the inner wall of the lifting rail, and a lifting slider is movably connected with the lifting slider inside the lifting rail.

3. The foldable multifunctional baby crib according to claim 2, characterized in that: The lifting slider includes a base, a plug-in protrusion, a track pulley, a positioning pin, a buckle, a snap-in groove, and a fixed pin; a plug-in protrusion is provided on the outside of the base, and a pair of track pulleys are connected to the upper and lower ends of the plug-in protrusion respectively, and a positioning pin with a reset spring is inserted in the middle of the plug-in protrusion, and the tail of the positioning pin is connected to the buckle movably buckled on the upper end of the base through the fixed pin to realize the unlocking linkage of the positioning pin; a snap-in groove is provided at the tail of the base.

4. The foldable multifunctional baby crib according to claim 1, characterized in that: The third quadrant arc-shaped enclosure and the fourth quadrant arc-shaped enclosure have the same structure, and the third quadrant arc-shaped enclosure adds a second lifting track and a fence lifting joint on the basis of the first quadrant arc-shaped enclosure; a second lifting track is provided in the middle of the side column tube, and the internal movable clamp of the second lifting track is connected with the fence lifting joint.

5. The foldable multifunctional baby crib according to claim 4, characterized in that: The fence lifting joint includes an outer shell, a track clamping seat, a driving slider, a finger buckle, a positioning pin, a return spring, and a stepped slope; a track clamping seat is provided on the inner side of the front end of the outer shell, a positioning pin is inserted through the track clamping seat through the return spring, and a driving slider is provided inside the outer shell for movement, and the stepped slope at the front end of the driving slider fits with the tail of the positioning pin to realize telescopic support; the tail of the driving slider is connected to the finger buckle at the lower end of the tail of the outer shell.

6. The foldable multifunctional baby crib according to claim 1, characterized in that: The folding base frame includes a midsole pier, a cross-link, an auxiliary link, a connecting piece, a folding pier, a block, a rotating seat, and a handle; four groups of cross-links are symmetrically connected to the outer side of the midsole pier through a pin shaft, the top ends of the second and fourth cross-links of the four groups of cross-links are connected to a block, the block is clamped in the middle reserved groove of the midsole pier, and the first and third quadrants of the four groups of cross-links are transversely connected with an auxiliary link through a connecting piece, and a folding pier is provided in the middle of the auxiliary link; wherein, the middle of the midsole pier is connected to the rotating seat through a spring shaft, the middle of the rotating seat is clamped with a handle, and the outer side of the rotating seat is provided with a pair of symmetrical engaging grooves, which are engaged with the inner grooves of the end of the block through the tooth grooves.

7. The foldable multifunctional baby crib according to claim 6, characterized in that: The top end of the cross link is connected to the base frame fixing seat at the bottom of the first quadrant arc frame, the second quadrant arc frame, the third quadrant arc frame and the fourth quadrant arc frame through a pin shaft, thereby realizing the movable connection between the folding base frame and the four groups of arc frames.

8. The foldable multifunctional baby crib according to claim 1, characterized in that: The folding fence includes left and right connecting rods and a folding joint. The left and right connecting rods are movably connected on both sides of the folding joint through rivets. A push switch with a return spring is movably connected to the inner side of the lower end of the folding joint. A pair of linkage limit rods are inserted in the middle guide groove of the push switch; the push switch is pressed to retract the linkage limit rod inward to unlock the linkage limit rod from limiting the end of the left and right connecting rods.

9. The foldable multifunctional baby crib according to claim 8, characterized in that: The two ends of the folding fence are plugged into the folding rod plug joint to form a fixed fence, and the two ends of the folding fence are plugged into the fence lifting joint to form a liftable fence.

10. The foldable multifunctional baby crib according to claim 1, characterized in that: The two-layer bed frame includes a left bed frame and a right bed frame; the left bed frame and the right bed frame are connected by plug-in pins, and the four corners of the two-layer bed frame are connected to the clamping groove at the tail of the lifting slider through the outward expansion support arm.

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