Baby playpen

Abstract

The utility model provides a kind of baby playpen bed frame, it is related to baby playpen bed frame technical field, it includes: two vertical frames, limiting rod with bayonet is equipped on each vertical frame outer wall surface;Two first connecting components are respectively rotationally connected on two vertical frame outer wall surfaces, each first connecting component has first folding place;Two adjusting parts are respectively located in first folding place, adjusting rod is arranged between two adjusting parts, and it is limited to the rotation of first connecting component, adjusting rod can extend along the direction of its central axis;Second connecting component is respectively rotationally connected on the outer wall surface of two vertical frames, and second connecting component has second folding place;Third connecting component is respectively slidingly connected on the outer wall surface of two limiting rods, and it is arranged in parallel with second connecting component;Locking part is respectively arranged in the sliding connection of third connecting component and adjacent limiting rod, and it is connected with corresponding limiting rod by bayonet, the playpen can be quickly stored, and it is convenient for baby to enter and exit.

Description

Technical Field

[0001] This utility model relates to the field of baby playpen frame technology, specifically to a baby playpen frame. Background Technology

[0002] A baby playpen is a specially designed crib designed to provide a space for babies to play and rest in. These cribs are typically equipped with various safety features, such as railings and soft mattresses, to ensure that babies will not get hurt while playing in the crib.

[0003] Currently, baby playpen frames have a rather cumbersome opening and closing mechanism, making it inconvenient for babies to get in and out. Furthermore, because baby playpen frames take up a large area, they need to be stored away when not in use. However, the current storage mechanisms for baby playpen frames are quite complex, making it difficult to quickly unfold and fold them up. Utility Model Content

[0004] This utility model addresses the problems of baby playpen frames not being able to be quickly folded up and unfolded, and babies not being able to quickly get in and out of the playpen. It provides a baby playpen frame that can quickly fold up the playpen and facilitates the baby's entry and exit from the playpen.

[0005] The technical solution adopted in this utility model is: Two upright frames, each with a limiting rod on its outer wall, and a slot on the outer wall of each limiting rod; Two first connecting components are rotatably connected to the outer wall surface near the bottom of the two uprights, and each first connecting component has a rotatable first fold at the middle position; Two adjusting components are located at the first fold of the two first connecting assemblies, and an adjusting rod is provided between the two adjusting components. The adjusting rod can extend along its own central axis. The adjusting rod is used to limit the rotation of the first connecting assemblies. The second connecting component is rotatably connected to the outer wall surface near the top of the two uprights, and the middle part of the second connecting component has a rotatable second fold. The third connecting component is slidably connected to the outer wall surface of the two limiting rods respectively, and is arranged parallel to the second connecting component; Locking components are respectively located at the sliding connection between the third connecting component and the adjacent limiting rod, and are engaged with the corresponding limiting rod through a bayonet.

[0006] Optionally, each frame includes: The support rod has a U-shaped cross-section with the opening facing the ground; Two first connecting cylinders are respectively disposed on the outer wall surface of the support rod near its two ends; each first connecting cylinder has a first connecting head and a second connecting head on its outer wall surface, with the first connecting head located above the second connecting head; The main crossbar is coaxially connected at both ends to two first connectors; The secondary crossbar is coaxially connected at both ends to two second connectors; The main crossbar and the second connector are both rotatably connected to the two first connecting components.

[0007] Optionally, each first connection component includes: The first connector is rotatably connected to two adjacent first connectors respectively; The second connecting piece is rotatably connected to two adjacent secondary crossbars respectively; Two first main connecting rods, one end of each first main connecting rod is connected to the adjacent first connecting member, and the other end is rotatably connected to the adjusting member; Two first-stage connecting rods, one end of each first-stage connecting rod is connected to the adjacent second connecting member, and the other end is rotatably connected to the adjusting member.

[0008] Optionally, the adjusting element includes: The first housing has two first rotating rods and one second rotating rod respectively provided on its inner wall surface. Two first auxiliary connecting rods located on the same central axis are rotatably connected to the adjacent second rotating rod. Two adjusting wheels are rotatably connected to two first rotating rods respectively; meshing teeth are provided on part of the outer wall of each adjusting wheel, and the two adjusting wheels are driven by meshing teeth; limit holes are provided on the side wall of each adjusting wheel; Two connecting blocks are respectively provided on the outer wall surface of each adjusting wheel without meshing teeth, and one of the connecting blocks is connected to the adjacent first main connecting rod; A limiting housing is disposed on the outer wall surface of the first housing and is connected to the interior of the first housing; One end of the adjusting rod is slidably connected to the limiting housing and extends into the interior of the first housing, and the adjusting rod is engaged with the two limiting holes.

[0009] Optionally, the adjusting lever includes: The fixed cylinder has two first sliding grooves and two second sliding grooves respectively opened on its outer wall surface. The two first sliding grooves are symmetrically distributed on both sides of the fixed cylinder, and the two second sliding grooves are symmetrically distributed on both sides of the fixed cylinder. Two sliding rods are located at both ends of the fixed cylinder and are slidably connected to the fixed cylinder; a first fixing hole is provided on the outer wall of each sliding rod; a plug that engages with two limiting holes is provided at one end of each sliding rod inside the first housing. A fixed plate is rotatably connected to the outer wall of a fixed cylinder; an arc-shaped groove is provided on the top of the fixed plate; The connecting piece is located on the outer wall of the fixed cylinder. The outer wall of the connecting piece near its two ends is provided with a second fixing hole and a third fixing hole respectively. The second fixing hole of the connecting piece is provided with a first locking rod that passes through the arc groove and the first sliding groove. The third fixing hole of the connecting piece is provided with a second locking rod that passes through the second sliding groove and the first fixing hole. The handle is located on top of the fixed plate.

[0010] Optionally, the second connection component includes: Two second connecting cylinders are respectively disposed on the outer wall surface of the support rod near its top; each second connecting cylinder has a second housing on its outer wall surface. Two second main connecting rods, one end of which is rotatably connected to the adjacent second housing, and the other end is hinged to each other; Two second auxiliary connecting rods, one end of which is rotatably connected to the adjacent second housing, and the other end of which is connected to each other.

[0011] Optionally, the third connection component includes: Two third connecting cylinders are slidably connected to the outer wall of adjacent limiting rods, and each third connecting cylinder has a third housing on its outer wall. Two third main connecting rods, one end of which is rotatably connected to the adjacent third housing, and the other end is hinged to each other; Two third linkages, one end of which is rotatably connected to the adjacent third housing, and the other end is hinged to each other.

[0012] Optionally, the locking element includes: A fixing rod is provided on the inner wall surface of the third housing; A fixed block, which is rotatably connected to the outer wall of a fixed rod; The locking block is located on the outer bottom of the fixed block, and it engages with the limiting rod through a locking slot.

[0013] Optionally, each limiting housing has a first connecting seat on its outer top, and a second connecting seat is rotatably connected to the outer wall of the first connecting seat. The second connecting seat has a fixing port inside, and a pull strap is provided between the fixing ports of adjacent second connecting seats. The side walls of the fixing cylinder near its two ends have a connecting groove, and the outer wall of each slide rod has a lever that passes through the connecting groove. Each lever abuts against the corresponding second connecting seat.

[0014] Optionally, each frame has multiple casters on its outer bottom.

[0015] The beneficial effects of this utility model are: 1. By setting two first connecting components between two upright frames, each first component has a first fold, and two adjusting parts are set at the first fold. An adjusting rod is set between the two adjusting parts. When the play bed needs to be stored, the two adjusting parts can be used to fold the two first connecting components at the corresponding first fold. After folding, the first connecting components will form an M-shaped structure with the two upright frames, thus completing the storage. At this time, the second and third connecting components will also bend at the corresponding second and third folds and cooperate with the first connecting components to complete the storage of the play bed. The process is convenient and quick. When it needs to be unfolded, after the first, second, and third connecting components have completed the corresponding rotation, the adjusting rod can be used to fix and limit the first connecting components within the adjusting parts, preventing the play bed from bending easily when not restricted, thus preventing injury to the baby. 2. By setting limiting rods on the outer wall of each frame, and opening a slot on the outer wall of each limiting rod, a third connecting component is slidably connected to the two limiting rods. A locking element is set at the sliding connection between the third connecting component and the two limiting rods. The locking element engages with the limiting rod through the slot, thereby fixing the sliding third connecting component. That is, when the baby needs to enter the playpen, the third connecting component can be slid down from the limiting rod by adjusting the engagement of the locking element with the slot, allowing the baby to enter smoothly. After entering the playpen, to prevent the baby from getting off the playpen on their own, the third connecting component can be slid until the locking element engages with the slot, thus preventing the baby from running off the playpen. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an infant playpen frame disclosed in Embodiment 1. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of an infant playpen frame disclosed in Embodiment 2. Figure 2 ; Figure 3 This is a schematic diagram of the three-dimensional structure of an infant playpen frame disclosed in Embodiment 2. Figure 3 ; Figure 4 for Figure 2A magnified view of a portion of point A in the middle; Figure 5 for Figure 3 A magnified view of a portion of point B in the middle; Figure 6 This is a three-dimensional structural diagram of the adjusting component; Figure 7 A schematic diagram of the connection structure between the adjusting component and the adjusting rod; Figure 8 This is a three-dimensional structural diagram of the adjusting rod; Figure 9 This is a schematic diagram of the connection structure between the pull belt and the adjusting component; Figure 10 This is a schematic diagram of the connection structure between the slide rod and the connecting piece. Figure 11 A bottom view of the fixed disk structure; Figure 12 This is a schematic diagram of the connection structure between the locking element and the limiting rod. Figure 13 This is a three-dimensional structural diagram of the locking component; Figure 14 for Figure 9 A magnified view of a portion of point C in the middle; Figure 15 A three-dimensional structural diagram to protect the shell.

[0018] Figure label: 1-Upright frame, 10-Support rod, 11-Wheel caster, 12-Main crossbar, 13-Secondary crossbar, 14-First connecting cylinder, 140-Elbow housing, 141-First connector, 142-Second connector; 2-First connecting component, 20-First main connecting rod, 21-First auxiliary connecting rod; 3-Adjusting component, 30-First housing, 31-Adjusting wheel, 310-First rotating rod, 32-Second rotating rod, 330-Meshing tooth, 34-Connecting block, 35-Limiting housing; 4-Adjusting rod, 40-Fixed cylinder, 401-Connecting groove, 41-Slide rod, 42-Fixed plate, 43-Connecting piece, 44-Handle, 45-Pull strap, 46-First connecting seat, 47-Second connecting seat, 470-Fixed opening, 48-Toggle lever; 5-Second connecting assembly, 50-Second main connecting rod, 51-Second auxiliary connecting rod, 52-Second connecting cylinder, 53-Second housing; 6-Third connecting assembly, 60-Third main connecting rod, 61-Third auxiliary connecting rod, 62-Third connecting cylinder, 63-Third housing; 7-Locking component, 70-Fixing rod, 71-Fixing block, 72-Catching block, 73-Reset spring; 8-Limit rod, 80-Bayonet; 9-Protective casing. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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.

[0020] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0021] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0022] Example 1

[0023] Please see Figure 1-15As shown, this embodiment discloses an infant playpen frame, including two upright frames 1, two first connecting components 2, two adjusting members 3, a second connecting component 5, a third connecting component 6, and a locking member 7. Specifically, the outer walls of the two upright frames 1 are respectively provided with limiting rods 8, and each limiting rod 8 has a slot 80 on its outer wall. It should be noted that the two limiting rods 8 are located on the same side of the two upright frames 1. The two first connecting components 2 are located between the two upright frames 1, and the two first connecting components 2 are rotatably connected to the outer walls below the two upright frames 1. Each first connecting component 2 has a first fold at its middle position, which allows the first connecting component 2 to rotate at this position. The two adjusting members 3 are respectively located at the first fold of the two first connecting components 2, and there is an adjusting rod 4 between the two adjusting members 3, that is, the two first connecting components 2 can be rotated at the first fold by the adjusting rod 4 and the two adjusting members 3. On the upper outer wall of the two upright frames 1, a second connecting component 5 and a third connecting component 6 are respectively arranged side by side. The second connecting component 5 has a second fold in the middle, and the third connecting component 6 has a third fold in the middle. When the adjusting rod 4 drives the first connecting component 2 to rotate through the two adjusting pieces 3, the second connecting component 5 and the third connecting component 6 can rotate simultaneously. It should be noted that the bending direction of the second connecting component 5 and the third connecting component 6 is different from that of the first connecting component 2. The first connecting component 2 rotates and bends towards the upper part of the upright frame 1, while the second connecting component 5 and the third connecting component 6 rotate and bend towards the lower part of the upright frame 1, thereby realizing the storage of the play bed. A locking piece 7 is provided at the connection between the third connecting component 6 and the limiting rod 8. The locking piece 7 can engage with the limiting rod 8 through the buckle 80 on the limiting rod 8, thereby realizing the sliding fixation of the third connecting component 6 on the limiting rod 8.

[0024] The aforementioned frame 1 includes a support rod 10, two first connecting cylinders 14, a main crossbar 12, and a secondary crossbar 13. Specifically, in this embodiment, the support rod 10 has a U-shaped cross-section, and its opening faces the ground. The two first connecting cylinders 14 are respectively disposed on the outer wall surface of the support rod 10 near its two ends. Each first connecting cylinder 14 has a first connector 141 and a second connector 142 respectively disposed on its outer wall surface, with the first connector 141 located above the second connector 142. The two ends of the main crossbar 12 are respectively disposed on the two first connectors 141 and coaxially connected to them. Similarly, the two ends of the secondary crossbar 13 are respectively disposed on the two second connectors 142 and coaxially connected to them. In this embodiment, both the main crossbar 12 and the second connector 142 are rotatably connected to the two first connecting assemblies 2.

[0025] The aforementioned first connecting assembly 2 includes a first connector, a second connector, two first main connecting rods 20, and two first auxiliary connecting rods 21. Specifically, the first connector is rotatably connected to two adjacent first connecting heads 141, and the second connector is rotatably connected to two adjacent auxiliary crossbars. In this embodiment, the first and second connectors are T-shaped connectors, which are respectively fitted onto the outer wall of the first connecting head 141 and the outer wall of the auxiliary crossbar 13. The other end is connected to the other end of the first main connecting rod 20 and the other end of the first auxiliary connecting rod 21, thereby rotatably connecting the first connecting assembly 2 to the frame 1. Furthermore, when the entire play bed is in the unfolded state, the central axes of the two first main connecting rods 20 are aligned, and the central axes of the two first auxiliary connecting rods 21 are aligned.

[0026] Furthermore, each first connecting cylinder 14 can also be provided with an elbow housing 140 with a 90° included angle on its outer wall surface. The elbow housing 140 can be rotatably connected to the first main connecting rod 20 and the first auxiliary connecting rod 21 at the same time, and the other side is connected to the main crossbar 12.

[0027] The aforementioned adjusting component 3 includes a first housing 30, two adjusting wheels 31, two connecting blocks 34, and a limiting housing 35. Specifically, two first rotating rods 310 and one second rotating rod 32 are respectively provided on the inner wall of the first housing 30. When the first connecting assembly 2 is in the unfolded state, the two first auxiliary connecting rods 21 are rotatably connected to the first housing 30 through the second rotating rod 32. The two adjusting wheels 31 are rotatably connected to the outer wall of the two first rotating rods 310 respectively. A portion of the outer wall of each adjusting wheel 31 is provided with meshing teeth 330, and the two adjusting wheels 31 mesh with each other through the meshing teeth 330. Limiting holes are also provided on the side wall of each adjusting wheel 31. The two limiting holes are engaged with each other between the adjusting rods 4, which can limit the rotation of the two adjusting wheels 31 through the adjusting rods 4, thereby restricting the first connecting assembly 2 and preventing the first connecting assembly 2 from being easily bent without restriction. Two connecting blocks 34 are respectively disposed on the outer wall surface of each adjusting wheel 31 without the meshing teeth 330. Each connecting block 34 is connected to the adjacent first main connecting rod 20. The limiting housing 35 is disposed on the outer wall surface of the first housing 30 and communicates with the interior of the first housing 30. While connecting and supporting the adjusting rod 4, the limiting housing 35 also allows the adjusting rod 4 to engage with the limiting holes on the two adjusting wheels 31 inside the first housing 30.

[0028] The aforementioned adjusting rod 4 includes a fixed cylinder 40, two sliding rods 41, a connecting piece 43, a fixed plate 42, and a handle 44. Specifically, two first sliding grooves and two second sliding grooves are respectively formed on the outer wall surface of the fixed cylinder 40, and the two first sliding grooves and two second sliding grooves are symmetrically distributed on both sides of the fixed cylinder 40. The two sliding rods 41 are slidably connected to the fixed cylinder 40 through the two ends of the fixed cylinder 40. A first fixing hole is formed on the outer wall surface of each sliding rod 41, and a plug is provided at one end of each sliding rod 41 inside the first housing 30. The plug can be engaged with the two limiting holes. The fixed plate 42 is rotatably connected to the outer wall surface of the fixed cylinder 40. Two arc-shaped grooves are formed on the top of the fixed plate 42, and the two arc-shaped grooves are respectively located on both sides of the fixed plate 42 and above the two first sliding grooves. The connecting piece 43 is located on the outer wall of the fixing cylinder 40. A second fixing hole and a third fixing hole are respectively opened on the outer wall near both ends of the connecting piece 43. A first locking rod is provided inside the second fixing hole, passing through the arc-shaped groove and the first sliding groove. A second locking rod passes through the second sliding groove and the first fixing hole inside the third fixing hole. A handle 44 is provided on the top of the fixing plate 42. It should be noted that, to prevent the handle 44 from pinching the baby, it can be rotatably connected to the top of the fixing plate 42.

[0029] The aforementioned second connecting assembly 5 includes two second connecting cylinders 52, two second main connecting rods 50, and two second auxiliary connecting rods 51. Specifically, the two second connecting cylinders 52 are respectively disposed on the outer wall surface of the support rod 10 near its top. A second housing 53 is disposed on the outer wall surface of each second connecting cylinder 52. One end of each of the two second main connecting rods 50 is rotatably connected to the adjacent second housing 53, and the other end is hinged to each other. Similarly, one end of each of the two second auxiliary connecting rods 51 is rotatably connected to the adjacent second housing 53, and the other end is hinged to each other. It should be noted that when the entire play bed is in the unfolded state, the central axes of the two second main connecting rods 50 are aligned, and the central axes of the two second auxiliary connecting rods 51 are aligned.

[0030] The aforementioned third connecting assembly 6 includes two third connecting cylinders 62, two third main connecting rods 60, and two third auxiliary connecting rods 61. Specifically, the two third connecting cylinders 62 are slidably connected to the outer wall surfaces of adjacent limiting rods 8, and a third housing 63 is provided on the outer wall surface of each third connecting cylinder 62. One end of each of the two third main connecting rods 60 is rotatably connected to the adjacent third housing 63, while the other end is hinged to each other. Similarly, one end of each of the two third auxiliary connecting rods 61 is rotatably connected to the inner wall surface of the adjacent third housing 63, while the other end is hinged to each other.

[0031] Furthermore, to prevent infants from having their hands squeezed by the two adjacent second main connecting rods 50 and the two adjacent second auxiliary connecting rods 51 in the second connecting assembly 5, and the two adjacent third main connecting rods 60 and the two adjacent third auxiliary connecting rods 61 in the third connecting assembly 6 while playing in the playpen, a protective housing 9 can be provided. The protective housing 9 can protect the hinges of the two adjacent second main connecting rods 50, the two adjacent second auxiliary connecting rods 51, the two adjacent third main connecting rods 60, and the two adjacent third auxiliary connecting rods 61. Specifically, the two second main connecting rods 50, the two second auxiliary connecting rods 51, the two third main connecting rods 60, and the two third auxiliary connecting rods 61 are all rotatably connected to the protective housing 9. It should be noted that when the two first connecting components 2 are bent at the first fold by adjusting the rod 4 and the adjusting piece 3, the second connecting component 5 and the third connecting component 6 bend in the opposite direction to the bending direction of the first connecting component 2 at their respective second and third folds, so that the overall play bed will not take up too much space after being stored.

[0032] The aforementioned locking component 7 includes a fixing rod 70, a fixing block 71, and a locking block 72. Specifically, the fixing rod 70 is disposed on the inner wall surface of the third housing 63, and the fixing block 71 is rotatably connected to the outer wall surface of the fixing block 71. The locking block 72 is disposed on the outer bottom of the fixing block 71. The locking block 72 can engage with the slot 80 opened on the limiting rod 8, thereby fixing the third connecting component 6 on the limiting rod 8.

[0033] Furthermore, the bottom of the frame 1 is equipped with multiple casters 11, which makes it easy to move and adjust the placement of the play bed.

[0034] The working principle of this embodiment is as follows: When the play bed changes from the unfolded state to the folded state, first remove and store the mat laid on the play bed. Then, hold the handle 44 and turn it. The handle 44 will drive the fixed plate 42 to rotate. During the rotation of the fixed plate 42, since the first locking rod is inside the arc groove, the first locking rod will slide inside the first sliding groove under the drive of the fixed plate 42. At this time, the other end of the connecting piece 43 will drive the second locking rod to slide inside the second sliding groove. During the sliding of the second locking rod, it can drive the slide rod 41 to slide inside the fixed cylinder 40 through the first fixing hole until the plug at the other end of the slide rod 41 is disengaged from the limiting hole on the two adjusting wheels 31 in the first housing 30. Then, the subsequent folding steps can be carried out. Next, the user holds handle 44 and lifts it upwards. At this time, the adjusting rod 4 will drive the adjusting component 3 to move upwards. During the upward movement of the adjusting rod 4, since the two upright frames 1 are still in contact with the ground, the first connecting component 2, the second connecting component 5 and the third connecting component 6 will bend and fold together. Specifically, as the two upright frames 1 move towards the adjusting component 3, one end of the first main connecting rod 20 will rotate on the first rotating rod 310 through the adjusting wheel 31, and the other end will rotate on the main crossbar 12. At this time, the first auxiliary connecting rod 21 will also rotate with the first main connecting rod 20. One end of the first auxiliary connecting rod 21 will rotate on the first housing 30 through the second rotating rod 32, and the other end will rotate on the auxiliary crossbar 13, so that the two upright frames 1, the first connecting component 2 and the adjusting component 3 form an M-shaped structure. During the bending process of the first connecting component 2, one end of the second main connecting rod 50 in the second connecting component 5 will rotate on the inner wall surface of the second housing 53, and the other end will rotate at the hinge point where the two second main connecting rods 50 are hinged. Similarly, one end of the second auxiliary connecting rod 51 will also rotate on the inner wall surface of the second housing 53, and the other end will rotate along the hinge point where the two second auxiliary connecting rods 51 are hinged. At the same time, one end of the third main connecting rod 60 in the third connecting component 6 will rotate on the inner wall surface of the third housing 63, and the other end will rotate along the hinge point where the two third main connecting rods 60 are hinged. Similarly, one end of the third auxiliary connecting rod 61 will rotate on the inner wall surface of the third housing 63, and the other end will rotate along the hinge point where the two third auxiliary connecting rods 61 are hinged. This allows the second connecting component 5 and the third connecting component 6 to be bent and stored downwards until the last two upright frames 1 are close to each other, thus completing the storage. When the playpen changes from the folded state to the unfolded state, it should be noted that when the playpen is in the folded state, the plug of the slide bar 41 is in the limiting hole of the adjusting wheel 31, which keeps the playpen in the folded state and prevents the baby from accidentally touching it and causing the playpen to suddenly unfold and injure the baby. Therefore, when unfolding the play bed, the adjusting rod 4 must first be adjusted so that the plug at the end of the slide rod 41 is not limited within the limiting hole of the adjusting wheel 31. At this time, simply press the adjusting rod 4, and the adjusting rod 4 will be pressed down. The first main connecting rod 20 will move towards the upright frame 1 on both sides as the adjusting wheel 31 rotates until the first connecting component 2, the second connecting component 5, and the third connecting component 6 are fully unfolded. Then, you can hold the handle 44 and rotate it to insert the plug of the slide rod 41 into the limiting hole of the adjusting wheel 31 to complete the unfolding of the play bed. Subsequently, when the baby needs to enter or exit the play bed, the fixing block 71 in the locking component 7 can be adjusted so that the fixing block 71 rotates on the outer wall of the fixing rod 70. When the fixing block 71 rotates, it can drive the locking block 72 to engage in the locking slot 80 of the limiting rod 8, thereby adjusting the position of the third connecting component 6 to fix / move.

[0035] Example 2

[0036] This embodiment is a further optimization based on Embodiment 1, specifically, as follows: Figure 9 and Figure 14As shown, a first connecting seat 46 is provided on the outer top of each limiting housing 35. A second connecting seat 47 is rotatably connected to the outer wall of the first connecting seat 46. A fixing port 470 is opened inside the second connecting seat 47, and a pull strap 45 is provided inside the fixing port 470. That is, by pulling the pull strap 45, the second connecting seat 47 can be rotated on the outer wall of the first connecting seat 46. A connecting groove 401 is opened on the side wall near both ends of the fixed cylinder 40. A lever 48 is provided on the outer wall of each slide rod 41, passing through the connecting groove 401. Each lever 48 abuts against the corresponding second connecting seat 47. That is, when the pull strap 45 is pulled to rotate the second connecting seat 47, the second connecting seat 47 will squeeze the lever 48, and the lever 48 will drive the slide rod 41 to move inside the fixed cylinder 40, thereby realizing the removal of the plug from the limiting hole of the adjusting wheel 31, so that the first connecting assembly 2 can be folded. It is important to note that when a mattress (for protection) is placed on the crib frame, the pull strap 45 needs to pass through the mattress to allow the crib frame to be stored without removing the mattress. Compared to the handle 44, using the pull strap 45 to store the crib frame makes the storage process much more convenient. Furthermore, a return spring 73 is installed between the fixing block 71 and the outer wall of the limiting rod 8. The return spring 73, after engaging with the latch 80 of the limiting rod 8, prevents the infant from accidentally pressing the fixing block 71, causing the latch 72 to disengage from the limiting rod 8 and resulting in a fall.

[0037] A load-bearing rod is provided between the two first main connecting rods 20 on the same side of the above-mentioned upright frame 1, which can provide auxiliary support for the baby on the play bed.

[0038] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A baby playpen frame, characterized in that, include: Two upright frames, each upright frame having a limiting rod on its outer wall surface, and each limiting rod having a slot on its outer wall surface; Two first connecting components are rotatably connected to the outer wall surface near the lower part of the two upright frames, and each first connecting component has a rotatable first fold at the middle position; Two adjusting members are respectively located at the first fold of the two first connecting components, and an adjusting rod is provided between the two adjusting members. The adjusting rod can extend along its own central axis; the adjusting rod is used to limit the rotation of the first connecting components. The second connecting components are rotatably connected to the outer wall surface near the top of the two uprights, and each of the second connecting components has a rotatable second fold at the middle position; The third connecting component is slidably connected to the outer wall surfaces of the two limiting rods respectively, and is arranged parallel to the second connecting component; Locking components are respectively provided at the sliding connection between the third connecting assembly and the adjacent limiting rod, and are engaged with the corresponding limiting rod through the bayonet.

2. The baby playpen frame according to claim 1, characterized in that, Each of the aforementioned frames includes: The support rod has a U-shaped cross-section with the opening facing the ground; Two first connecting cylinders are respectively disposed on the outer wall surface of the support rod near its two ends; each of the first connecting cylinders has a first connector and a second connector on its outer wall surface, with the first connector located above the second connector; The main crossbar is coaxially connected at both ends to the two first connectors respectively; The secondary crossbar is coaxially connected at both ends to the two second connectors respectively; The main crossbar and the second connector are both rotatably connected to the two first connecting components.

3. The baby playpen frame according to claim 2, characterized in that, Each of the first connection components includes: The first connector is rotatably connected to two adjacent first connectors respectively; The second connecting member is rotatably connected to each of the two adjacent secondary crossbars; Two first main connecting rods, one end of each first main connecting rod is connected to the adjacent first connecting member, and the other end is rotatably connected to the adjusting member; Two first auxiliary links, one end of each first auxiliary link is connected to the adjacent second connecting member, and the other end is rotatably connected to the adjusting member.

4. The baby playpen frame according to claim 3, characterized in that, The adjusting element includes: The first housing has two first rotating rods and one second rotating rod respectively provided on its inner wall surface. The two first auxiliary connecting rods located on the same central axis are rotatably connected to the adjacent second rotating rod. Two adjusting wheels are rotatably connected to two of the first rotating rods respectively; meshing teeth are provided on a portion of the outer wall of each adjusting wheel, and the two adjusting wheels are driven by meshing through the meshing teeth; limit holes are provided on the side wall of each adjusting wheel; Two connecting blocks are respectively disposed on the outer wall surface of each of the adjusting wheels without meshing teeth, and one of the connecting blocks is connected to the adjacent first main connecting rod; A limiting housing is disposed on the outer wall surface of the first housing and is connected to the interior of the first housing; One end of the adjusting rod is slidably connected to the limiting housing and extends into the interior of the first housing, and the adjusting rod is engaged with the two limiting holes.

5. The baby playpen frame according to claim 4, characterized in that, The adjusting rod includes: The fixed cylinder has two first sliding grooves and two second sliding grooves respectively opened on its outer wall surface. The two first sliding grooves are symmetrically distributed on both sides of the fixed cylinder, and the two second sliding grooves are symmetrically distributed on both sides of the fixed cylinder. Two sliding rods are located at both ends of the fixed cylinder and are slidably connected to the fixed cylinder; a first fixing hole is provided on the outer wall surface of each sliding rod; a plug is provided at one end of each sliding rod inside the first housing to engage with the two limiting holes; A fixed plate is rotatably connected to the outer wall of the fixed cylinder; an arc-shaped groove is provided on the top of the fixed plate; A connecting piece is located on the outer wall of the fixed cylinder. A second fixing hole and a third fixing hole are respectively opened on the outer wall near both ends of the connecting piece. A first locking rod passing through the arc groove and the first sliding groove is provided inside the second fixing hole of the connecting piece. A second locking rod passing through the second sliding groove and the first fixing hole is provided inside the third fixing hole of the connecting piece. A handle is located on top of the fixed plate.

6. The baby playpen frame according to claim 2 or 5, characterized in that, The second connection component includes: Two second connecting cylinders are respectively disposed on the outer wall surface of the support rod near its top; each second connecting cylinder has a second housing on its outer wall surface. Two second main connecting rods, one end of which is rotatably connected to the adjacent second housing, and the other end is hinged to each other; Two second auxiliary connecting rods, one end of which is rotatably connected to the adjacent second housing, and the other end of which is connected to each other.

7. The baby playpen frame according to claim 6, characterized in that, The third connection component includes: Two third connecting cylinders are slidably connected to the outer wall surfaces of adjacent limiting rods, and each third connecting cylinder has a third housing on its outer wall surface. Two third main connecting rods, one end of which is rotatably connected to the adjacent third housing, and the other end of which is hinged to each other; Two third connecting rods, one end of which is rotatably connected to the adjacent third housing, and the other end of which is hinged to each other.

8. The baby playpen frame according to claim 7, characterized in that, The locking element includes: A fixing rod is provided on the inner wall surface of the third housing; A fixing block is rotatably connected to the outer wall surface of the fixing rod; A locking block is located on the outer bottom of the fixed block, and the locking block is engaged with the limiting rod through the locking slot.

9. The baby playpen frame according to claim 5, characterized in that, Each of the limiting housings has a first connecting seat on its outer top. A second connecting seat is rotatably connected to the outer wall of the first connecting seat. A fixing port is opened inside the second connecting seat. A pull strap is provided between the fixing ports of adjacent second connecting seats. A connecting groove is opened on the side wall near both ends of the fixing cylinder. A lever is provided on the outer wall of each slide rod that passes through the connecting groove. Each lever abuts against the corresponding second connecting seat.

10. The baby playpen frame according to claim 1, characterized in that, Each of the aforementioned frames is equipped with multiple casters on its outer bottom.

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