Modular lift detachable child enclosure joint device

By using a modular, detachable, and adjustable connection structure and lifting components, the problem of interface wear and safety hazards caused by plugging and unplugging the round tubes in children's fences is solved, achieving stable connection and safe use.

CN224539843UActive Publication Date: 2026-07-24HEBEI ZHUZHU CHILDRENS TOYS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI ZHUZHU CHILDRENS TOYS CO LTD
Filing Date
2025-09-04
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The existing round tube insertion and removal method of children's fences is prone to wear and tear on the joints, and the exposed tubes pose safety hazards, affecting the protective effect and safety.

Method used

It adopts a modular, lifting, and detachable connection structure, including the design of slots and plugs, combined with lifting components and a foolproof mechanism to ensure connection stability and safety.

Benefits of technology

It improves the stability and safety of the connection, prevents children from accidentally pulling out the horizontal bar, and enables personalized height adjustment to meet different needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a modularization lifting detachable children rail joint device: including cylinder, the bottom of cylinder is equipped with support plate, the upper coaxial of cylinder is equipped with the movable cylinder rod of being able to go up and down, the radial surface of cylinder rod and cylinder is integrative with two connecting columns no.
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Description

Technical Field

[0001] This utility model relates to the field of fence technology, and in particular to a modular lifting and detachable child fence joint device. Background Technology

[0002] Child playpens are safety features designed specifically for infants and toddlers. Their core function is to define a safe play area and reduce the risk of accidents. By enclosing a space, they effectively prevent babies from coming into contact with dangerous items (such as electrical outlets or sharp furniture) or entering dangerous areas (such as stairs or kitchens). They are especially suitable for parents to supervise their children when they are away for a short time. The soft material and rounded corners of the playpens can prevent bumps and injuries. Some products are also equipped with educational toy panels, combining safety with early education functions.

[0003] In existing technologies, child safety barriers typically use a plug-in connection method with round tubes. This type of barrier has obvious drawbacks: frequent plugging and unplugging accelerates wear on the joints, and long-term use may lead to problems such as loose connections and wobbling, affecting the protective effect. At the same time, the exposed tubes are sharp, and if a child accidentally pulls out the tubes and plays with them, they may cut themselves, increasing the trouble for parents in providing medical care for their children. Utility Model Content

[0004] The purpose of this invention is to provide a modular, liftable, and detachable child fence joint device to solve the problem in the background art where frequent insertion and removal of the round tube insertion and removal of the fence can easily cause wear and tear on the interface, and the exposed tube can easily injure children.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A modular lifting and detachable child fence joint device: including a cylinder, a support plate at the bottom of the cylinder, a cylindrical rod coaxially arranged above the cylinder that can move up and down, two connecting columns 1 integrally formed on the radial surfaces of the cylindrical rod and the cylinder, the axes of the two connecting columns 1 being perpendicular to each other, a connecting component provided on the side of the connecting column 1 away from the axis of the cylindrical rod, the connecting component being detachably connected to a transverse rod, the transverse rod including two ends at both axial ends, the bottom of the ends being provided with an upwardly recessed slot 2, the connecting component including a plug 2 fixed relative to the connecting column 1, when the plug 2 is inserted into the slot 2, the end is coaxially arranged with the connecting column, the end has the same diameter as the connecting column 1, the end and the outer diameter of the connecting column 1 can jointly cover the sleeve, and a lifting component is provided above the cylinder.

[0006] Based on the preferred embodiment of this technical solution, a first insert block is provided on the side of the connecting post away from the cylinder axis, and the side of the first insert block away from the cylinder axis is connected to a second insert block. A second slot is provided on the side of the slot close to the connecting post, and the first insert block can be inserted into the first slot.

[0007] Based on the preferred embodiment of this technical solution, the top of the connecting column is provided with a through ejection hole, and a movable rod that can move up and down is provided inside the ejection hole. The radial surface of the sleeve is provided with a positioning hole, and the movable rod can pass through the positioning hole.

[0008] Based on the preferred embodiment of this technical solution, the bottom of the connecting column is provided with an installation hole, the installation hole and the ejection hole are coaxially arranged, the diameter of the installation hole is larger than the diameter of the ejection hole, a baffle that can move up and down is provided in the installation hole, the movable rod is fixed on the top of the baffle, and a mounting block is engaged with the lower part of the baffle in the installation hole, and a flat spring is provided between the baffle and the mounting block.

[0009] Based on the preferred embodiment of this technical solution, an anti-foolproof strip is provided at the outer diameter of the end, and an anti-foolproof groove is provided at the inner diameter of the sleeve. When the movable rod is inserted into the positioning hole, the anti-foolproof strip and the anti-foolproof groove fit together.

[0010] Based on the preferred embodiment of this technical solution, the lifting assembly includes a vertical rod integrally formed with the top of the cylinder. A mounting post is provided at the top of the vertical rod. The inner diameter of the vertical rod and the cylinder are clearance-fitted. A sealing plug is fitted onto the outer diameter of the mounting post. The sealing plug includes a rubber disc that fits against the top of the mounting post. A rubber cylinder with an interference fit to the mounting post is provided at the bottom of the rubber disc. A screw can pass through the top of the rubber disc to connect with the mounting post. A rubber ring is integrally formed at the outer diameter of the rubber cylinder. The outer diameter of the rubber ring is larger than the inner diameter of the cylinder. A mounting plate is provided above the cylinder. A threaded post is integrally formed at the bottom of the mounting plate. A thread corresponding to the threaded post is provided at the inner diameter of the cylinder. The bottom of the mounting plate can fit against the sealing ring. An air nozzle is provided at the bottom of the threaded post through which the threaded post and the mounting plate pass.

[0011] Based on the preferred embodiment of this technical solution, a screw is coaxially provided at the top of the cylinder, and threads corresponding to the screw are machined at the inner diameter of the cylinder. An installation block two is engaged and connected above the screw inside the cylinder.

[0012] Based on the preferred embodiment of this technical solution, a top cover can be installed on the top of the cylinder rod, and the bottom surface of the top cover can be tangent to the outer diameter of the connecting column.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The combination of slot 2 and insert 2 facilitates the connection of cylindrical or tube rods to transverse rods. Slot 2 is located at the bottom of the end, allowing the end to be inserted into insert 2 from above. This ensures that the transverse rod is connected to insert 2 by gravity and does not fall off, thus increasing the stability of the connection between the transverse rod and insert 2.

[0015] 2. The diameter of the end and the connecting post are the same, which makes it easy to align the sleeve for wrapping and prevent children from accidentally knocking the horizontal bar out from the bottom, thus increasing safety. The lifting component can adjust the position of the cylinder and the tube rod to achieve personalized lifting and lowering, so that the height of the fence meets the customer's requirements. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of one embodiment of the modular lifting and detachable child fence joint device of this utility model;

[0017] Figure 2 This is a schematic diagram of the tube rod structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the sealing plug structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the sleeve structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the mounting plate structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the second mounting block of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Horizontal rod; 11. End; 111. Slot 1; 112. Anti-fooling strip; 113. Slot 2; 2. Sleeve; 21. Positioning hole; 31. Cylindrical rod; 32. Connecting post 1; 321. Insert block 1; 322. Insert block 2; 4. Sealing plug; 41. Rubber round plate; 42. Rubber cylinder; 421. Rubber ring; 5. Cylinder; 501. Screw; 51. Vertical rod; 511. Mounting post; 53. Support plate; 60. Ejection hole; 61. Mounting hole; 62. Top cover; 63. Mounting plate; 64. Sealing ring; 65. Threaded post; 66. Air nozzle; 67. Mounting block 2; 71. Movable rod; 72. Baffle; 73. Flat spring; 74. Mounting block 1. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6This utility model provides an embodiment: a modular lifting and detachable child fence joint device: including a cylinder 5, a support plate 53 at the bottom of the cylinder 5, and a vertically movable cylindrical rod 31 coaxially arranged above the cylinder 5. Two connecting posts 32 are integrally formed on the radial surfaces of the cylindrical rod 31 and the cylinder 5, respectively. The axes of the two connecting posts 32 are perpendicular to each other. A connecting assembly is provided on the side of the connecting post 32 away from the axis of the cylindrical rod 31. The connecting assembly is detachably connected to a transverse rod 1. The transverse rod 1 includes end heads 11 at both axial ends. The bottom of the end head 11 has an upwardly recessed slot 113. The connecting assembly includes a plug 322 fixed relative to the connecting post 32. When the plug 322 is inserted into the slot 113, the end head 11 is coaxially arranged with the connecting post 32. The diameters of the end head 11 and the connecting post 32 are the same. The outer diameters of the end head 11 and the connecting post 32 can jointly cover the sleeve 2. A lifting assembly is provided above column 5. Through the cooperation of slot 2 113 and insert 2 322, it is convenient to connect column 5 or cylindrical rod 31 to horizontal rod 1. Slot 2 113 is located at the bottom of end 11, which allows end 11 to be inserted into insert 2 322 from above. This allows horizontal rod 1 to be connected to insert 2 322 by gravity and not fall off, increasing the connection stability between horizontal rod 1 and insert 2 322. The diameter of end 11 and connecting column 1 32 is the same, which facilitates the alignment of sleeve 2 for wrapping and prevents children from accidentally knocking horizontal rod 1 out from the bottom, increasing safety. The lifting assembly can adjust the position of column 5 and cylindrical rod 31 to achieve personalized lifting and lowering, so that the height of the fence meets the customer's requirements. As another style, connecting column 1 32 can also be set between two cylindrical rods 31, so that the axes of connecting column 1 32 on both sides of cylindrical rod 31 coincide, to meet different splicing requirements.

[0025] Please see Figure 1-4 A further solution based on this embodiment is as follows: a first insertion block 321 is provided on the side of the connecting post 32 away from the axis of the cylinder rod 31. The side of the first insertion block 321 away from the axis of the cylinder rod 31 is connected to the second insertion block 322. A second slot 113 is provided on the side of the slot close to the connecting post 32. The first insertion block 321 can be inserted into the first slot 111. The first insertion block 321 facilitates the connection of the cylinder rod 31 to the second insertion block 322. The area of ​​the second insertion block 322 is larger than the area of ​​the first insertion block 321, which can effectively prevent it from being pulled out and increase the convenience of use.

[0026] Please see Figure 2-4A further solution based on this embodiment is as follows: the top of the connecting column 32 is provided with a through ejector hole 60, and a movable rod 71 that can move up and down is provided in the ejector hole 60. The radial surface of the sleeve 2 is provided with a positioning hole 21, and the movable rod 71 can pass through the positioning hole 21. The ejector hole 60 facilitates the movable rod 71 to pass through the positioning hole 21 of the sleeve 2, thereby increasing the stability of the sleeve 2. When the movable rod 71 extends to the highest point, the movable rod 71 cannot protrude from the surface of the outer diameter of the sleeve 2.

[0027] Please see Figure 3-5 A further solution based on this embodiment is as follows: The bottom of the connecting column 32 is provided with a mounting hole 61. The mounting hole 61 and the ejection hole 60 are coaxially arranged. The diameter of the mounting hole 61 is larger than the diameter of the ejection hole 60. A baffle 72 that can move up and down is provided in the mounting hole 61. The movable rod 71 is fixed to the top of the baffle 72. A mounting block 74 is engaged with the bottom of the baffle 72 in the mounting hole 61. A flat spring 73 is provided between the baffle 72 and the mounting block 74. The flat spring 73 can continuously exert a force to push the movable rod 71 outward, so that the movable rod 71 can only retract when pressed with force, so that the sleeve 2 cannot be easily pulled out from between the end 11 and the cylinder 31.

[0028] Please see Figure 1-3 A further solution based on this embodiment is as follows: an anti-foolproof strip 112 is provided at the outer diameter of the end 11, and an anti-foolproof groove is provided at the inner diameter of the sleeve 2. When the movable rod 71 is inserted into the positioning hole 21, the anti-foolproof strip 112 and the anti-foolproof groove fit together. Through the cooperation of the anti-foolproof strip 112 and the anti-foolproof groove, it is convenient for the user to quickly fit the movable rod 71 into the positioning hole 21, thereby increasing ease of use.

[0029] For a first embodiment of the lifting assembly, please refer to [link / reference]. Figure 1-5A further embodiment of this solution is as follows: The lifting assembly includes a vertical rod 51 integrally formed with the top of the cylinder 5. A mounting post 511 is provided at the top of the vertical rod 51. The vertical rod 51 and the inner diameter of the cylinder 31 are in clearance fit. A sealing plug 4 is fitted onto the outer diameter of the mounting post 511. The sealing plug 4 includes a rubber circular plate 41 that fits against the top of the mounting post 511. A rubber cylinder 42 that is interference-fitted with the mounting post 511 is provided at the bottom of the rubber circular plate 41. A screw can be threaded through the top of the rubber circular plate 41 to connect it to the mounting post 511. A rubber ring 421 is integrally formed at the outer diameter of the rubber cylinder 42. The outer diameter of the rubber ring 421 is larger than the inner diameter of the cylinder 31. A mounting plate 63 is provided above the cylinder 31. A threaded post 65 is integrally formed at the bottom of the mounting plate 63. A threaded post 65 is provided at the inner diameter of the cylinder 31. The mounting plate 63 has a thread corresponding to the threaded post 65, and the bottom of the mounting plate 63 can fit the sealing ring 64. The bottom of the threaded post 65 is provided with an air nozzle 66 that passes through the threaded post 65 and the mounting plate 63. By inflating the air nozzle 66 with an air pump, the cylinder rod 31 can move upward. The customer can adjust the height of the cylinder rod 31 according to their needs. The outer diameter of the rubber ring 421 is larger than the inner diameter of the cylinder rod 31, which can increase the sealing degree of the sealing plug 4, slow down the release speed of the air filled into the cylinder rod 31, and increase the time for the fence height to be maintained. The air nozzle 66 is a commercially available accessory, and its installation method and working principle will not be described here. The gas stored in the cylinder rod 31 is not easily compressed or expanded, which can ensure a certain relative stability between the cylinder rod 31 and the cylinder 5, which is suitable for use by children aged one to three years.

[0030] For a second embodiment of the lifting assembly, please refer to [link / reference]. Figure 6 A further solution based on this embodiment is as follows: A screw 501 is coaxially provided on the top of the cylinder 5, and threads corresponding to the screw 501 are machined on the inner diameter of the cylindrical rod 31. An installation block 67 is engaged and connected above the screw 501 inside the cylindrical rod 31. The height of the fence can be adjusted by manually rotating the screw 501 and the threads on the cylindrical rod 31. This requires the fence to be completely disassembled for adjustment, but this twisting adjustment method is more stable and can maintain it for a sufficient period of time. The installation block 67 can be tightly attached to the top of the screw 501 to achieve the effect of tightening the threads, increasing friction and preventing loosening.

[0031] Please see Figure 1-6 A further solution based on this embodiment is as follows: a top cover 62 can be installed on the top of the cylinder rod 31, and the bottom surface of the top cover 62 can be tangent to the outer diameter of the connecting column 32. By installing the top cover 62 on the top of the cylinder rod 31, it can prevent children from prying open the air nozzle 66 or snapping on the mounting block 67. The top cover 62 and the cylinder rod 31 are interference fit, and an adult needs to pull it out. If there is a sudden drop in temperature, a hot towel needs to be used to apply heat to the top cover 62 before the top cover 62 can be pulled out.

[0032] Working principle: Parents can take a piece of elastic fabric, with both sides sewn into a loop structure. This type of fabric is sold as part of the entire fence product. A horizontal bar 1 is then fitted inside the loop structure of the fabric, and a sleeve 2 is inserted at end 11. The slots 111 and 113 on the horizontal bar 1 are then engaged with the insert blocks 321 and 322. The sleeve 2 is then moved outward along the axial direction of the horizontal bar 1, so that the positioning hole 21 engages with the modularly fitted movable bar 71 and cylindrical bar 31, allowing the movable bar 71 to be inserted into the positioning hole 21. When the sleeve 2 is fitted with the inserted connecting post 32, the movable bar 71 needs to be pressed down with a finger. In the first embodiment, the parent can... Using an air pump connected to the air nozzle 66, air is inflated into the cylinder 31. The air inside the cylinder 31 will push it upwards, and the upward rise should not exceed half the height of the cylinder 31. Then, the top cover 62 is used to cover the top of the cylinder 31. In the second embodiment, before splicing the horizontal rod 1, the parent needs to tighten the cylinder 5 and the cylinder 31. After tightening to the appropriate position, the parent takes the second installation block 67 and inserts it into the cylinder 31 for engagement. The top of the second installation block 67 applies pressure to the top of the screw 501 to tighten the threads. The upward rise of the cylinder 31 should not exceed two-thirds of the height of the cylinder 31. Then, the top cover 62 is used to cover the top of the cylinder 31.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular, lifting, and detachable child safety railing joint device, characterized in that: The system includes a cylinder (5), a support plate (53) at the bottom of the cylinder (5), and a cylindrical rod (31) that can move up and down coaxially above the cylinder (5). The radial surfaces of the cylindrical rod (31) and the cylinder (5) are integrally formed with two connecting columns (32). The axes of the two connecting columns (32) are perpendicular to each other. A connecting assembly is provided on the side of the connecting column (32) away from the axis of the cylindrical rod (31). The connecting assembly is detachably connected to a transverse rod (1). The transverse rod (1) includes two ends on both axial sides. (11) The bottom of the end (11) is provided with an upwardly recessed slot 2 (113). The connecting component includes a plug 2 (322) that is fixed relative to the connecting post 1 (32). When the plug 2 (322) is inserted into the slot 2 (113), the end (11) and the connecting post 1 (32) are coaxially arranged. The end (11) and the connecting post 1 (32) have the same diameter. The outer diameter of the end (11) and the connecting post 1 (32) can jointly cover the sleeve (2). A lifting component is provided above the cylinder (5).

2. The modular lifting and detachable child fence joint device according to claim 1, characterized in that: A first insert (321) is provided on the side of the connecting post (32) away from the axis of the cylinder (31). The side of the first insert (321) away from the axis of the cylinder (31) is connected to the second insert (322). The second slot (113) is provided on the side of the slot close to the first connecting post (32). The first insert (321) can be inserted into the first slot (111).

3. The modular lifting and detachable child fence joint device according to claim 2, characterized in that: The top of the connecting column (32) is provided with a through ejector hole (60), and a movable rod (71) that can move up and down is provided in the ejector hole (60). The radial surface of the sleeve (2) is provided with a positioning hole (21), and the movable rod (71) can pass through the positioning hole (21).

4. The modular lifting and detachable child fence joint device according to claim 3, characterized in that: The bottom of the connecting column (32) is provided with a mounting hole (61). The mounting hole (61) and the ejection hole (60) are coaxially arranged. The diameter of the mounting hole (61) is larger than the diameter of the ejection hole (60). A baffle (72) that can move up and down is provided in the mounting hole (61). The movable rod (71) is fixed on the top of the baffle (72). A mounting block (74) is engaged with the bottom of the baffle (72) in the mounting hole (61). A flat spring (73) is provided between the baffle (72) and the mounting block (74).

5. The modular lifting and detachable child fence joint device according to claim 4, characterized in that: An anti-fool strip (112) is provided at the outer diameter of the end (11), and an anti-fool groove is provided at the inner diameter of the sleeve (2). When the movable rod (71) is inserted into the positioning hole (21), the anti-fool strip (112) and the anti-fool groove fit together.

6. The modular lifting and detachable child fence joint device according to claim 5, characterized in that: The lifting assembly includes a vertical rod (51) integrally formed with the top of the cylinder (5). A mounting post (511) is provided at the top of the vertical rod (51). The inner diameter of the vertical rod (51) is clearance-fitted with the inner diameter of the cylindrical rod (31). A sealing plug (4) is fitted onto the outer diameter of the mounting post (511). The sealing plug (4) includes a rubber disc (41) that fits against the top of the mounting post (511). A rubber cylinder (42) with an interference fit to the bottom of the rubber disc (41) is provided. A screw can pass through the top of the rubber disc (41) to connect with the mounting post (511). 1) Connection: A rubber ring (421) is integrally formed at the outer diameter of the rubber cylinder (42). The outer diameter of the rubber ring (421) is larger than the inner diameter of the cylinder rod (31). An installation plate (63) is provided above the cylinder rod (31). A threaded post (65) is integrally formed at the bottom of the installation plate (63). A thread corresponding to the threaded post (65) is provided at the inner diameter of the cylinder rod (31). The bottom of the installation plate (63) can fit the sealing ring (64). An air nozzle (66) is provided at the bottom of the threaded post (65) and the installation plate (63).

7. The modular lifting and detachable child fence joint device according to claim 5, characterized in that: A screw (501) is coaxially provided at the top of the cylinder (5). The inner diameter of the cylinder (31) is machined with threads corresponding to the screw (501). An installation block (67) is meshed and connected above the screw (501) inside the cylinder (31).

8. The modular lifting and detachable child fence joint device according to any one of claims 6 or 7, characterized in that: A top cover (62) can be installed on the top of the cylinder (31), and the bottom surface of the top cover (62) can be tangent to the outer diameter of the connecting column (32).