A tubular fence structure
By using the snap-fit mechanism of the upper and lower connectors of the cylindrical fence structure and the design of anti-detachment components, the problem of unstable fence connection is solved, achieving a stable and smooth connection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YONGJIA HABI SHUJIAO TOYS CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-07-24
AI Technical Summary
Existing child playpens suffer from problems such as a lack of natural transitions at the joints and insufficient stability at the connections, especially products that use connectors.
A circular tubular fence structure is designed, which uses the snap-fit of the upper and lower connectors, combined with the sleeve design of the limiting part and the hollow part, and ensures a stable connection and a smooth appearance through the interlocking of the anti-detachment part and the positioning part.
It achieves stable fence connections and a smooth appearance, is easy to operate, and meets usage requirements.
Smart Images

Figure CN224539841U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a fence, and more particularly to a circular tubular fence structure. Background Technology
[0002] Children's playpens, also known as playpens or safety fences, are protective devices constructed of plastic or wood, primarily designed for infants aged 6 months to 3 years. They achieve stability through a four-sided interlocking structure and bottom suction cups. Combining gates, playpens, and individual fence sections, they create independent activity spaces, aiming to free up guardians while ensuring children's safety. This product emphasizes interactive, anti-slip design and scientifically standardized construction, using food-grade safe materials and focusing on the cognitive-enhancing effects of vibrant colors. Core functions include preventing infants from falling, providing space for crawling and walking, fostering independence and concentration, and developing early intelligence and physical coordination through interactive toys. Special attention should be paid to safety details such as the treatment of burrs and the firmness of joints. Fence connection methods vary. One type uses integrated pins and slots for adjacent connections, while another uses connectors for transitional connections. The former allows for greater freedom of movement between sections, requiring a base for fixation after adjustments. The latter often uses square or deformable connectors, resulting in noticeable unevenness at the joints. For products using connectors, there is a lack of products with a natural transition and stable connection. Utility Model Content
[0003] In view of the shortcomings of existing technology, this utility model provides a circular tubular fence structure.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a circular tubular fence structure, comprising two fence bodies and an upper connector and a lower connector connecting the fence bodies. The upper connector has a semi-circular projection along its length, and the bottom surface of the lower connector is a ground-contacting plane. Both the upper and lower connectors have locking and fitting limiting portions at their ends. The upper and lower connectors also have hollow portions near the limiting portions for the fence bodies to be inserted. The fence bodies have an upper connector and a lower connector in the docking direction. The upper and lower connectors have at least a sleeve portion and a locking portion. The locking portion and the limiting portion are locked and limited. The sleeve portion fits into the hollow portion for limiting and fitting. The surfaces of the upper connector and the lower connector are flush at the docking points.
[0005] The limiting part is a ring structure, and the locking part is provided with a corresponding locking groove.
[0006] The upper connector is also fixedly connected to an anti-detachment component in the hollowed-out part.
[0007] The anti-detachment component is a hollow cylindrical structure.
[0008] The upper connector also has a positioning part for the adjacent sleeve.
[0009] The positioning part also has a positioning plane on the side, and the anti-detachment component has a positioning hole for the positioning part to be inserted and fitted.
[0010] The hollowed-out portion of the lower connector has a contacting positioning plane with the lower connector portion.
[0011] The beneficial effects of this utility model are as follows: The circular tube fence structure provided by this utility model is ingeniously designed, simple in structure, easy to operate and connect, stable and reliable in use, and has a neat and smooth appearance, which meets the design and use requirements. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the combined structure of this utility model;
[0013] Figure 2 This is an exploded structural diagram of the present invention;
[0014] Figure 3 This is a schematic diagram of the upper connecting member structure of this utility model;
[0015] Figure 4 This is a schematic diagram of the anti-detachment component structure of this utility model;
[0016] Figure 5 This is a schematic diagram of the upper connecting part of this utility model;
[0017] Figure 6 This is a schematic diagram of the lower connecting part and the lower connecting member of this utility model. Detailed Implementation
[0018] like Figures 1-6 As shown, a cylindrical fence structure includes two fence body sections 1 and an upper connector 2 and a lower connector 3 connecting the fence body sections 1. The upper connector 2 has a semi-circular projection along its length. The surfaces of the upper connector 2 and the upper connecting portion 4, and the surfaces of the lower connector 3 and the lower connecting portion 5, are flush. The surfaces of the upper connecting portion 4 and the lower connecting portion 5 of the fence body 1 are aligned with the surfaces of the upper connector 2 and the lower connecting portion 3, ensuring a smooth transition in appearance. In this embodiment, the flush surface design is achieved by adjusting the diameter of the sleeve portion 8 and the locking portion 9, or by adapting the height and width.
[0019] The bottom surface of the lower connector 3 is a ground-contact plane, which facilitates stability and reduces swaying when placing the fence. Both the upper connector 2 and the lower connector 3 have locking portions 6 at their ends. Near the locking portions 6, the upper connector 2 and the lower connector 3 also have hollow portions 7 for the fence body 1 to be inserted. The fence body 1 has an upper connector 4 and a lower connector 5 in the mating direction. The upper connector 4 and the lower connector 5 each have at least a sleeve portion 8 and a locking portion 9. The locking portion 9 engages with the locking portion 6 for limiting, and the sleeve portion 8 fits into the hollow portion 7 for limiting. The sleeve portion 8 directly fits into the hollow portion 7, and then the locking portion 6 naturally engages with the locking portion 9 for axial limiting. The hollow portion 7 provides sufficient space for installation and can also be used to completely cover the anti-detachment component 11, making the overall appearance seamless. The limiting part 6 is a ring structure, and the locking part 9 is provided with a corresponding locking groove 10 for the limiting part 6. This shape and structure are compatible with the upper connecting part 4 and the lower connecting part 5, and will not be elaborated or limited here.
[0020] The upper connector 2 is also fixedly connected to an anti-detachment component 11 in the hollow portion 7. The anti-detachment component 11 is a hollow cylindrical structure. The upper connector 2 also has a positioning portion 12 adjacent to the sleeve portion 8. The positioning portion 12 is inserted into the anti-detachment component 11 to strengthen the connection and fixation. At the same time, the anti-detachment component 11 and the upper connector 2 can be radially engaged and limited, or other fasteners can be used for connection and fixation. The positioning portion 12 also has a positioning plane on the side, and the anti-detachment component 11 has a positioning hole 13 for the positioning portion 12 to be inserted and fitted. The hollow portion 7 of the lower connector 3 and the lower connector 5 have a contacting positioning plane. Similarly, the positioning portion 12 uses planar contact to enhance stability and avoid rotational displacement.
[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the basic principles, main features, and advantages of this utility model have been shown and described above, which should be understood by those skilled in the art.
Claims
1. A circular tubular fence structure, characterized in that, The guardrail includes two sections of guardrail body and an upper connector and a lower connector connecting the guardrail body. The upper connector has a semi-circular projection along its length, and the bottom surface of the lower connector is a ground-contacting plane. Both the upper and lower connectors have locking and limiting portions at their ends. The upper and lower connectors also have hollow portions near the limiting portions for the guardrail body to be inserted. The guardrail body has an upper connector and a lower connector in the mating direction. The upper connector and the lower connector have at least a sleeve portion and a locking portion. The locking portion and the limiting portion are locked and limited. The sleeve portion fits into the hollow portion for limiting and limiting. The surfaces of the upper connector and the lower connector are flush at the mating points.
2. The circular tubular fence structure as described in claim 1, characterized in that, The limiting part is a ring structure, and the locking part is provided with a corresponding locking groove.
3. A circular tubular fence structure as described in claim 1 or 2, characterized in that, The upper connector is also fixedly connected to an anti-detachment component in the hollowed-out part.
4. A circular tubular fence structure as described in claim 3, characterized in that, The anti-detachment component is a hollow cylindrical structure.
5. A circular tubular fence structure as described in claim 4, characterized in that, The upper connector also has a positioning part for the adjacent sleeve.
6. A circular tubular fence structure as described in claim 5, characterized in that, The positioning part also has a positioning plane on the side, and the anti-detachment component has a positioning hole for the positioning part to be inserted and fitted.
7. A circular tubular fence structure as described in claim 1, characterized in that, The hollowed-out portion of the lower connector has a contacting positioning plane with the lower connector portion.