Portable multifunctional baby crib

Abstract

A portable multifunctional baby crib relates to the field of children products and comprises a crib board frame, two supporting seats and two crib head boards, the two supporting seats are bilaterally symmetrical, the tops of the two supporting seats are connected to the bottom of the crib board frame in a foldable mode, and the two crib head boards are bilaterally symmetrical. The bottoms of the two headboards are connected to the top of the bed board frame in a foldable mode, a lifting upper surrounding rod capable of lifting is arranged between the front sides of the two headboards, a door-shaped surrounding rod is arranged between the rear sides of the two headboards, and the bottom of the door-shaped surrounding rod is connected with the bed board frame in a foldable mode. The end, on the same side as the lifting upper surrounding rod, of the supporting base is arranged in a telescopic mode. The multifunctional baby crib can be used as a baby crib, can be tightly attached to an adult bed to be used as a bedside bed, can be folded, and is easy to carry and package.

Description

Technical Field

[0001] This utility model relates to the field of children's products, specifically a portable multifunctional baby bed. Background Technology

[0002] A crib is an important sleep and activity space for newborns and infants during their growth. Its design prioritizes safety, comfort, and practicality, aiming to provide babies with a healthy and independent sleep environment while helping parents manage childcare more scientifically. Currently, cribs on the market mainly fall into two categories: traditional solid wood cribs and folding portable cribs. Traditional solid wood cribs are sturdy, have strong load-bearing capacity, and a long lifespan, but they are inconvenient to carry and can only be used at home. Folding portable cribs, while easy to fold and carry, can only be placed independently in the nursery or bedroom and cannot be used close to an adult bed, making it inconvenient for adults to provide convenient care. Based on this, the applicant, after in-depth research, has developed this application. Utility Model Content

[0003] This utility model provides a portable multifunctional baby bed, the main purpose of which is to overcome the problem that existing folding portable baby beds cannot be used close to an adult bed.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A portable multifunctional baby crib includes a bed frame, two support seats, and two headboards. The two support seats are symmetrical from left to right, and their tops are foldable and connected to the bottom of the bed frame. The two headboards are also symmetrical from left to right, and their bottoms are foldable and connected to the top of the bed frame. A height-adjustable upper rail is provided between the front sides of the two headboards, and a U-shaped rail is provided between the rear sides of the two headboards. The bottom of the U-shaped rail is foldable and connected to the bed frame. The ends of the support seats and the height-adjustable upper rail on the same side are retractable.

[0006] Furthermore, the left and right ends of the bed frame are fixedly connected to headboard mounting bases, and the headboard and headboard mounting bases are foldable.

[0007] Furthermore, the left and right ends of the lifting upper rail are equipped with lifting joints, the front side of the headboard is equipped with a first lifting groove, the front side of the headboard fixing seat is equipped with a second lifting groove communicating with the first lifting groove, the side of the lifting joint near the headboard is equipped with a sliding part that matches the first and second lifting grooves, the sliding part can slide up and down along the first and second lifting grooves, the lifting joint is equipped with a retractable first locking tongue, the lifting joint is equipped with a first spring that abuts against the first locking tongue, the end of the first locking tongue near the first and second lifting grooves extends out of the lifting joint, the front side of the headboard is equipped with a first slot, the middle of the second lifting groove is equipped with a second slot, one end of the first locking tongue can be inserted into the first and second slots, the bottom of the first locking tongue is equipped with a lifting button for driving the first locking tongue to slide, the lifting button is located at the bottom of the lifting joint.

[0008] Furthermore, a locking plate is provided at the bottom of the first locking tongue, an unlocking button is provided inside the lifting joint, a limiting part is provided at the top of the unlocking button, the width of the limiting part is greater than the width of the unlocking button, the locking plate is provided with a limiting hole adapted to the limiting part and a cut adapted to the unlocking button, the limiting hole and the cut are connected, the width of the cut is less than the width of the limiting hole, the bottom of the unlocking button extends out of the bottom of the lifting joint, and a second spring is provided at the top of the limiting part to abut against the first locking tongue.

[0009] Furthermore, the top of the headboard is provided with two lower hinge parts, which are located at the front and rear ends of the headboard respectively. The bottom of the headboard is provided with two upper hinge parts, which are located at the front and rear ends of the headboard respectively. Each lower hinge part corresponds to one upper hinge part. The lower hinge part is hinged to the corresponding upper hinge part. The lower hinge part is provided with a first rotary guide groove, and the upper hinge part is provided with a first guide shaft. The first guide shaft is located in the first rotary guide groove. The upper hinge part is provided with a second rotary guide groove, and the lower hinge part is provided with a second guide shaft. The second guide shaft is located in the second rotary guide groove. The second rotary guide groove and the first rotary guide groove are arranged in an offset manner.

[0010] Furthermore, the rear end of the bed frame is provided with two folding bases arranged left and right, and the two folding bases are provided with hinge interfaces with open front ends. The bottom ends of the two U-shaped rails are respectively hinged to the hinge interfaces of the two folding bases. The top of the U-shaped rails is provided with two retractable second latches arranged left and right, and the two second latches are respectively located inside the top left and right ends of the U-shaped rails. Each second latch corresponds to a headboard. The end of the second latch near the headboard extends out of the U-shaped rails. The bottom of the second latch is provided with a folding button for driving the second latch to extend and retract. The folding button is located outside the top of the U-shaped rails. The top of the rear side of the headboard is provided with a first locking hole for inserting the second latch.

[0011] Furthermore, the bottom of the bed frame is connected to two fixed seats, and the top of each of the two support seats is provided with a folding seat. Each fixed seat corresponds to one folding seat. The fixed seat is provided with a folding opening, and the top of the folding seat is hinged to the folding opening.

[0012] Furthermore, the support base includes a base, a support rod, and a sleeve rod. The bottom of the support rod is connected to the top of the base, and the upper part of the support rod is fitted inside the sleeve rod. The outer side of the bottom of the sleeve rod is provided with a double locking assembly. The double locking assembly includes an installation part, a pull-out part that can be lifted, and a press-out part that can be pressed. The installation part is connected to the sleeve rod. The pull-out part and the press-out part are both provided on the installation part, and the pull-out part is located above the press-out part. When the pull-out part is not being lifted, it can block the press-out part. The inner side of the press-out part is provided with a locking part. The outer side of the support rod is provided with multiple upper and lower arranged third slots. The locking part passes through the installation part and locks into the third slots.

[0013] Furthermore, the base includes a base tube, a large sleeve, two telescopic tubes, and two telescopic feet. The two telescopic tubes are symmetrically arranged front to back, and the two telescopic feet are symmetrically arranged front to back. Each telescopic foot corresponds to one telescopic tube. The large sleeve is fixed inside the base tube. One end of each telescopic tube is located inside the large sleeve, and the other end of the telescopic tube extends out of the base tube and is fixedly connected to one end of each telescopic foot. The telescopic tube is telescopically arranged relative to the large sleeve, and the telescopic foot is telescopically arranged relative to the base tube. The bottom of the other end of each telescopic foot is connected to a rotatable caster. The bottom surface of the base tube is an arc surface.

[0014] Furthermore, the telescopic foot is provided with a spring slot, the top surface of the telescopic foot is provided with a second locking hole, the spring slot is provided with a V-shaped spring, the V-shaped spring has a locking head, the locking head extends out of the second locking hole and is located on one side of the bottom tube, the front and rear ends of the large sleeve are connected with tube sleeves, and the telescopic tube is fitted with a third spring on its outer periphery, the two ends of the third spring respectively abutting against the tube sleeve and one end of the telescopic foot.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following advantages: This crib can be used as a crib or a bedside bed, and is also easy to carry and pack. When this utility model is to be used as a bedside bed, the lifting upper arm is lowered to the bottom, and the end of the support seat on the same side as the lifting upper arm is retracted. Then, the crib is tied to the adult bed with ropes to fix it, so that the end of the support seat on the same side as the lifting upper arm is in contact with the adult bed. At this time, the crib can be used as a bedside bed close to the adult bed. When the crib is separated from the adult bed, the crib can be used alone. When the crib needs to be stored, the lifting upper arm is first lowered to the bottom, then the U-shaped arm is folded relative to the bed frame, then the two headboards are folded, and finally the two support seats are folded. This greatly reduces the space occupied by the crib when storing it and the packaging materials, making it easy to carry and pack. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention.

[0017] Figure 2 This is the front view of the present invention.

[0018] Figure 3 This is a connection structure diagram of the headboard and headboard fixing base of this utility model.

[0019] Figure 4 This is a partial exploded view of the headboard and headboard mounting base of this utility model.

[0020] Figure 5 This is an exploded view of the headboard and headboard mounting base of this utility model.

[0021] Figure 6 This is a structural diagram of the lifting upper support rod of this utility model.

[0022] Figure 7 This is an exploded view of the lifting joint of this utility model.

[0023] Figure 8 This is an exploded view of the lifting joint of this utility model from another angle.

[0024] Figure 9 This is a structural diagram of the gate-shaped fence of this utility model.

[0025] Figure 10 This is a partial exploded view of the gate-shaped fence of this utility model.

[0026] Figure 11 This is a structural diagram of the support base of this utility model.

[0027] Figure 12This is an exploded view of the structure of the support base of this utility model.

[0028] Figure 13 This is an exploded view of the support base of this utility model from another angle.

[0029] Figure 14 This is a structural diagram of the lifting upper arm of this utility model after it has descended and the telescopic foot has retracted.

[0030] Figure 15 In order to be in Figure 14 The diagram shows the structure of the gate-shaped railing after folding.

[0031] Figure 16 This is a structural diagram of the present invention after folding.

[0032] Figure 17 This is a structural diagram of the universal wheel of this utility model when it is rotated to face upwards. Detailed Implementation

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Reference Figure 1A portable multifunctional baby crib includes a bed frame 1, two support seats 2, and two headboards 3. The two support seats 2 are symmetrical from left to right, and their tops are foldable and connected to the bottom of the bed frame 1. The two headboards 3 are also symmetrical from left to right, and their bottoms are foldable and connected to the top of the bed frame 1. A height-adjustable upper rail 4 is provided between the front sides of the two headboards 3, and a U-shaped rail 5 is provided between the rear sides of the two headboards 3. The bottom of the U-shaped rail 5 is foldable and connected to the bed frame 1. The ends of the support seats 2 on the same side as the height-adjustable upper rail 4 are retractable.

[0037] Reference Figure 1 and Figure 3 The left and right ends of the bed frame 1 are fixedly connected to headboard fixing seats 6, and each headboard 3 corresponds to one headboard fixing seat 6. The headboard 3 and the headboard fixing seat 6 can be folded and connected.

[0038] Reference Figure 1 , Figure 3 and Figure 6 The lifting upper rail 4 has lifting joints 41 on both its left and right ends. The front side of the headboard 3 has a first lifting groove 31, and the front side of the headboard fixing seat 6 has a second lifting groove 61 that communicates with the first lifting groove 31. The side of the lifting joint 41 near the headboard 3 has a sliding part 42 that matches the first lifting groove 31 and the second lifting groove 61. The sliding part 42 can slide up and down along the first lifting groove 31 and the second lifting groove 61. The lifting joint 41 has a retractable first locking tongue 43 and a first spring 44 that abuts against the first locking tongue 43. The end of the first locking tongue 43 near the first lifting groove 31 and the second lifting groove 61 extends out of the lifting joint 41. The headboard 3 has a first slot 32 on its front side and a second slot 62 in the middle of the second lifting slide 61. One end of the first locking tongue 43 can be inserted into the first slot 32 and the second slot 62. The bottom of the first locking tongue 43 has a lifting button 45 for driving the first locking tongue 43 to slide. The lifting button 45 is located at the bottom of the lifting joint 41.

[0039] Reference Figures 6 to 8The first locking tongue 43 has a locking plate 46 at its bottom, and an unlocking button 47 is provided inside the lifting joint 41. The top of the unlocking button 47 has a limiting part 48, the width of which is greater than the width of the unlocking button 47. The locking plate 46 has a limiting hole 461 that matches the limiting part 48 and a cutout 462 that matches the unlocking button 47. The limiting hole 461 and the cutout 462 are connected. The width of the cutout 462 is less than the width of the limiting hole 461. The bottom of the unlocking button 47 extends out from the bottom of the lifting joint 41, and the top of the limiting part 48 has a second spring 49 that abuts against the first locking tongue 43.

[0040] Reference Figure 1 , Figure 3 , Figures 6 to 8 The unlock button 47 and the lifting button 45 form a double-lock structure. When the first latch 43 extends, the limiting part 48 is located in the limiting hole 461. When the first latch 43 needs to retract and slide, the unlock button 47 needs to be pressed upward first, so that the limiting part 48 disengages from the limiting hole 461. At this time, the unlock button 47 is located in the cut 462, and the lifting button 45 can then drive the first latch 43 to retract and slide, allowing the end of the first latch 43 near the first lifting slide 31 to separate from the first slot 32. By operating the unlock button 47 and the lifting button 45 on the left and right ends of the lifting upper rod 4 in the above manner, the lifting upper rod 4 can be lowered until the end of the first latch 43 near the second lifting slide 61 is inserted into the second slot 62. When the lifting button 45 and the unlock button 47 are released, the lifting button 45 and the unlock button 47 automatically reset under the action of the first spring 44 and the second spring 49.

[0041] Reference Figures 3 to 5 The headboard fixing seat 6 has two lower hinge parts 63 at its top, located at the front and rear ends of the headboard fixing seat 6, respectively. The headboard 3 has two upper hinge parts 33 at its bottom, located at the front and rear ends of the headboard 3, respectively. Each lower hinge part 63 corresponds to one upper hinge part 33, and the lower hinge part 63 is hinged to the corresponding upper hinge part 33. The lower hinge part 63 has a first rotary guide groove 64, and the upper hinge part 33 has a first guide shaft 34 located within the first rotary guide groove 64. The upper hinge part 33 has a second rotary guide groove 35, and the lower hinge part 63 has a second guide shaft 65 located within the second rotary guide groove 35. The second rotary guide groove 35 and the first rotary guide groove 64 are arranged in a staggered manner.

[0042] Reference Figure 1 , Figure 3 and Figure 9The bed frame 1 has two folding bases 7 arranged left and right at its rear end. Each folding base 7 has a hinge interface 71 with an open front end. The bottom ends of the U-shaped railing 5 are respectively hinged into the hinge interfaces 71 of the two folding bases 7. The top of the U-shaped railing 5 has two retractable second latches 51 arranged left and right, located at the left and right ends of the top of the U-shaped railing 5. Each second latch 51 corresponds to a headboard 3. The end of the second latch 51 near the headboard 3 extends out of the U-shaped railing 5. The bottom of the second latch 51 has a folding button 52 for driving its extension and retraction. The folding button 52 is located outside the top of the U-shaped railing 5. The top of the rear side of the headboard 3 has a first locking hole 36 for inserting the second latch 51.

[0043] Reference Figure 9 and Figure 10 Specifically, the U-shaped railing 5 includes a folded upper railing tube 53, two folded vertical tubes 54 arranged on the left and right, and two railing tube seats 55 arranged symmetrically on the left and right. The folded upper railing tube 53 is located between the tops of the two folded vertical tubes 54, and the bottoms of the two folded vertical tubes 54 are respectively hinged to the corresponding hinge interfaces 71. Each railing tube seat 55 corresponds to one folded vertical tube 54. The railing tube seat 55 is used to connect the top of the folded vertical tube 54 and the end of the folded upper railing tube 53. The second locking tongue 51 is telescopically provided in the railing tube seat 55. The railing tube seat 55 is provided with a fourth spring 56 that abuts against the end of the second locking tongue 51 away from the headboard 3. The folding button 52 is located outside the bottom surface of the end of the folded upper railing tube 53.

[0044] Reference Figure 1 , Figures 3 to 5 , Figure 9 and Figure 10 When the folding buttons 52 of the two second locking tongues 51 respectively drive the two second locking tongues 51 to retract, the ends of the two second locking tongues 51 near the headboard 3 separate from the corresponding first locking holes 36. At this time, the U-shaped railing 5 can be folded to the top surface of the bed frame 1. When the folding buttons 52 are released, the second locking tongues 51 automatically return to their original position under the action of the fourth spring 56. After the lifting upper railing 4 descends and the U-shaped railing 5 is folded, the two headboards 3 can fold towards each other. The cooperation between the first rotating guide groove 64 and the first guide shaft 34, and the cooperation between the second rotating guide groove 35 and the second guide shaft 65, can guide the rotation and folding of the headboard 3, and at the same time limit the folding angle and unfolding angle of the headboard 3.

[0045] Reference Figure 1 , Figure 2 and Figure 11The bottom of the bed frame 1 is connected to two fixed seats 9, and the top of the two support seats 2 is provided with a folding seat 21. Each fixed seat 9 corresponds to one folding seat 21. The fixed seat 9 is provided with a folding opening 91, and the top of the folding seat 21 is hinged in the folding opening 91. The two support seats 2 can be folded towards each other.

[0046] Reference Figures 11 to 13 The support base 2 includes a base 22, a support rod 23, and a sleeve rod 24. The bottom of the support rod 23 is connected to the top of the base 22, and the upper part of the support rod 23 is fitted inside the sleeve rod 24. The bottom outer side of the sleeve rod 24 is provided with a double-locking assembly 25. The double-locking assembly 25 includes a mounting part 251, a pull-up part 252, and a press-down part 253. The mounting part 251 is connected to the bottom of the sleeve rod 24. The pull-up part 252 and the press-down part 253 are both provided on the mounting part 251, and the pull-up part 252 is located above the press-down part 253. When the pull-up part 252 is not pulled, it can block the press-down part 253. The inner side of the press-down part 253 is provided with a locking part 254, and the outer side of the support rod 23 is provided with multiple upper and lower arranged third slots 231. The locking part 254 passes through the mounting part 251 and locks into the third slots 231.

[0047] Reference Figures 11 to 13 The structure of the double-lock assembly 25 is existing technology and will not be described in detail here. When the height of the crib needs to be adjusted, first pull up the lifting part 252 to remove any obstruction between the lifting part 252 and the pressing part 253, then press down the pressing part 253 to disengage the locking part 254 from the original mating third locking groove 231. At this point, the sleeve rod 24 can be pulled to adjust the height of the crib. When the height of the crib is adjusted to the desired height, release the pressing part 253 to allow the locking part 254 to re-engage in the new third locking groove 231, and finally release the lifting part 252 to block the pressing part 253.

[0048] Reference Figures 11 to 13 , Figure 17The base 22 includes a base tube 221, a large sleeve 222, two telescopic tubes 223, and two telescopic feet 224. The two telescopic tubes 223 and the two telescopic feet 224 are symmetrically arranged front and back, with each telescopic foot 224 corresponding to one telescopic tube 223. The large sleeve 222 is fixed inside the base tube 221. The bottom of the support rod 23 extends into the base tube 221 and connects to the top of the large sleeve 222. One end of the telescopic tube 223 is located inside the large sleeve 222, and the other end of the telescopic tube 223 extends out of the base tube 221 and is fixedly connected to one end of the telescopic foot 224. The telescopic tube 223 is telescopically arranged relative to the large sleeve 222, and the telescopic foot 224 is telescopically arranged relative to the base tube 221. The bottom of the other end of the telescopic foot 224 is connected to a rotatable caster wheel 225. The bottom surface of the base tube 221 is an arc surface. The rotation method and structure of the caster wheel 225 are existing technologies and will not be described in detail here. The caster wheel 225 can be in contact with the ground when facing downwards, or it can be rotated to face upwards. When the caster wheel 225 is rotated to face upwards, the bottom surface of the bottom tube 221 is in contact with the ground. Since the bottom surface of the bottom tube 221 is an arc surface, the bottom tube 221 can rock at this time, and the crib can be used as a rocking crib.

[0049] Reference Figures 11 to 13 The telescopic foot 224 has a spring slot 226 inside, and a second locking hole 227 on the top surface of the telescopic foot 224. A V-shaped spring 228 is provided in the spring slot 226. The V-shaped spring 228 has a locking head, which extends out of the second locking hole 227 and is located on one side of the bottom tube 221. The front and rear ends of the large sleeve 222 are connected to sleeves 229. A third spring 220 is fitted around the outer periphery of the telescopic tube 223. The two ends of the third spring 220 abut against one end of the sleeve 229 and one end of the telescopic foot 224, respectively.

[0050] Reference Figures 11 to 13 When the telescopic foot 224 extends, the locking head of the V-shaped spring 228 abuts against the side of the bottom tube 221; when the telescopic foot 224 needs to retract, press down the locking head of the V-shaped spring 228 so that the locking head does not abut against the side of the bottom tube 221, at which time the telescopic tube 223 and the telescopic foot 224 can retract.

[0051] The design principle of this utility model is as follows: I. Reference Figure 1 This utility model can be used as a crib. When used as a crib, the lifting upper rail 4 is raised to its highest position, and the U-shaped rail 5 is vertical relative to the bed frame 1 and connected to the two headboards 3. II. Reference Figure 12 and Figure 14This utility model can be used as a bedside bed. When used as a bedside bed, the lifting upper rail 4 is lowered to its lowest position, the U-shaped rail 5 is vertical relative to the bed frame 1 and connected to the two headboards 3, and the telescopic legs 224 on the same side as the lifting upper rail 4 are retracted. Then, the crib is tied to the adult bed with ropes to fix it, so that the telescopic legs 224 on the same side as the lifting upper rail 4 are in contact with the adult bed. At this time, the crib can be used as a bedside bed close to the adult bed. When the crib is separated from the adult bed, the telescopic legs 224 automatically extend and return to their original position under the action of the third spring 220, and the crib can be used alone again. III. Reference Figure 1 and Figure 17 This utility model can be used as a rocking crib. When used as a rocking crib, the lifting upper support rod 4 rises to its highest position, the U-shaped support rod 5 is vertical relative to the bed frame 1 and connected to the two headboards 3, and then the casters 225 are rotated upwards so that the bottom surface of the bottom tube 221 contacts the ground. Since the bottom surface of the bottom tube 221 is an arc surface, the bottom tube 221 can rock at this time, and the crib can be used as a rocking crib. IV. Reference Figure 15 and Figure 16 When the crib needs to be stored, first lower the upper rail 4 to the bottom, then fold the U-shaped rail 5 relative to the bed frame 1, then fold the two headboards 3, and finally fold the two support seats 2. At the same time, retract the two telescopic legs 224 on the support seats 2. After the two telescopic legs 224 are retracted, they can be fixed with ropes, straps, etc., which greatly reduces the space occupied by the crib and the packaging materials when storing it.

[0052] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A portable multi-functional crib, characterized by: The bed frame includes a bed plate frame, two support seats and two headboards, the two support seats are left-right symmetrical, the top of the two support seats is foldably connected to the bottom of the bed plate frame, the two headboards are left-right symmetrical, the bottom of the two headboards is foldably connected to the top of the bed plate frame, a liftable upper surrounding rod is arranged between the front sides of the two headboards, a door-shaped surrounding rod is arranged between the rear sides of the two headboards, the bottom of the door-shaped surrounding rod is foldably connected to the bed plate frame, and the end of the support seat on the same side as the liftable upper surrounding rod is telescopically arranged.

2. A portable multifunctional crib as claimed in claim 1, wherein: The left and right ends of the bed plate frame are fixedly connected with head fixed seats, and the headboard is foldably connected with the head fixed seat.

3. A portable multifunctional crib as claimed in claim 2, wherein: The left and right ends of the liftable upper surrounding rod are provided with lifting joints, the front end side of the headboard is provided with a first lifting sliding groove, the front end side of the head fixed seat is provided with a second lifting sliding groove in communication with the first lifting sliding groove, the side surface of the lifting joint close to the headboard is provided with a sliding part matched with the first lifting sliding groove and the second lifting sliding groove, the sliding part can slide up and down along the first lifting sliding groove and the second lifting sliding groove, the lifting joint is internally provided with a first lock tongue which can be telescopically arranged, the lifting joint is internally provided with a first spring matched with the first lock tongue, one end of the first lock tongue close to the first lifting sliding groove and the second lifting sliding groove is arranged outside the lifting joint, the front end side of the headboard is provided with a first clamping groove, the middle part of the second lifting sliding groove is provided with a second clamping groove, one end of the first lock tongue can be inserted into the first clamping groove and the second clamping groove, and the bottom of the first lock tongue is provided with a lifting button for driving the first lock tongue to slide, the lifting button is arranged at the bottom of the lifting joint.

4. A portable multifunctional crib as claimed in claim 3, wherein: The bottom of the first lock tongue is provided with a locking plate, the lifting joint is internally provided with an unlocking button, the top of the unlocking button is provided with a limiting part, the width of the limiting part is greater than the width of the unlocking button, the locking plate is provided with a limiting hole matched with the limiting part and a cutout matched with the unlocking button, the limiting hole is in communication with the cutout, the width of the cutout is less than the width of the limiting hole, the bottom of the unlocking button is arranged outside the bottom of the lifting joint, and the top of the limiting part is provided with a second spring matched with the first lock tongue.

5. A portable multifunctional crib as claimed in claim 2, wherein: The top of the head fixed seat is provided with two lower hinge parts, the two lower hinge parts are respectively arranged at the front end and the rear end of the head fixed seat, the bottom of the headboard is provided with two upper hinge parts, the two upper hinge parts are respectively arranged at the front end and the rear end of the headboard, each lower hinge part corresponds to an upper hinge part, the lower hinge part is hingedly connected with the corresponding upper hinge part, the lower hinge part is provided with a first rotation guide groove, the upper hinge part is provided with a first guide shaft, the first guide shaft is arranged in the first rotation guide groove, the upper hinge part is provided with a second rotation guide groove, the lower hinge part is provided with a second guide shaft, the second guide shaft is arranged in the second rotation guide groove, and the second rotation guide groove and the first rotation guide groove are arranged in up-down staggered mode.

6. A portable multifunctional crib as claimed in claim 1, wherein: The rear end of the bed frame is provided with two folding bases arranged left and right, the two folding bases are provided with hinged interfaces with open front ends, the bottom of the two ends of the door-shaped surrounding rod is hinged to the hinged interfaces of the two folding bases, the top of the door-shaped surrounding rod is provided with two second lock tongues arranged left and right and capable of being extended and retracted, the two second lock tongues are respectively located in the top left and right ends of the door-shaped surrounding rod, each second lock tongue corresponds to a headboard, the end of the second lock tongue close to the headboard extends out of the door-shaped surrounding rod, the bottom of the second lock tongue is provided with a folding button for driving the second lock tongue to extend and retract, the folding button is located outside the top of the door-shaped surrounding rod, and the rear end side top of the headboard is provided with a first clamping hole for the second lock tongue to insert.

7. A portable multifunctional crib as claimed in claim 1, wherein: The bottom of the bed frame is connected with two fixed bases, the top of each support base is provided with a folding base, and each fixed base corresponds to a folding base.

8. A portable multifunctional crib as claimed in claim 1, wherein: The support base comprises a base, a support rod and a sleeve rod, the bottom of the support rod is connected with the top of the base, the upper part of the support rod is sleeved in the sleeve rod, the bottom outer side of the sleeve rod is provided with a two-way lock assembly, the two-way lock assembly comprises a mounting part, a pullable pull part and a pressable pressing part, the mounting part is connected with the sleeve rod, the pull part and the pressing part are arranged on the mounting part, and the pull part is located above the pressing part, the pull part can block the pressing part when the pull part is not pulled, the inner side of the pressing part is provided with a clamping part, and the outer side of the support rod is provided with a plurality of third clamping grooves arranged upward and downward, and the clamping part is clamped on the third clamping groove through the mounting part.

9. A portable multifunctional crib as claimed in claim 8, wherein: The base comprises a bottom pipe, a large sleeve pipe, two telescopic pipes and two telescopic feet, the two telescopic pipes are symmetrically arranged front and back, the two telescopic feet are symmetrically arranged front and back, each telescopic foot corresponds to a telescopic pipe, the large sleeve pipe is fixedly arranged in the bottom pipe, one end of the telescopic pipe is located in the large sleeve pipe, the other end of the telescopic pipe extends out of the bottom pipe and is fixedly connected with one end of the telescopic foot, the telescopic pipe is telescopically arranged relative to the large sleeve pipe, and the telescopic foot is telescopically arranged relative to the bottom pipe, the other end of the telescopic foot is connected with a rotatable universal wheel, and the bottom surface of the bottom pipe is a circular arc surface.

10. A portable multifunctional crib as claimed in claim 9, wherein: The telescopic foot is provided with a spring slot, the top surface of the telescopic foot is provided with a second clamping hole, the spring slot is provided with a V-shaped spring, the V-shaped spring has a clamping head, the clamping head extends out of the second clamping hole and is located on one side of the bottom pipe, the front and rear ends of the large sleeve pipe are connected with pipe sleeves, the outer periphery of the telescopic pipe is sleeved with a third spring, and the two ends of the third spring are respectively in contact with the pipe sleeve and one end of the telescopic foot.

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