A surround rod assembly and a child's bed

CN224820194UActive Publication Date: 2026-10-09SHANGHAI ZHIWU DOUDING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202522373920.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-07
Publication Date
2026-10-09
Estimated Expiration
2035-11-07

AI Technical Summary

Technical Problem

[0003]当前市面上的围杆组件多采用螺栓紧固或普通卡扣卡接的方式实现与立柱的连接,前者需借助工具完成拆装,在调节高度或清洁时操作繁琐、耗时费力;后者虽无需工具,但锁紧力度难以把控,易因卡扣松动出现配合间隙过大的问题,无法形成稳定防护,难以满足频繁调整场景的使用需求

Benefits of technology

[0024]本申请提供的围杆组件,通过在杆体两端分别设置滑动锁紧机构,可以灵活实现与立柱的滑动配合或锁紧,满足围杆组件高度调节、位置固定等不同使用需求。滑动锁紧机构中,限位套对按钮及插销形成有效包裹与防护,可以避免按钮及插销受外力碰撞损坏或误触;第一限位柱插设至插销配合孔并与第一弹性件弹性抵接,用于为插销滑动提供稳定导向与复位力,进而可以确保插销在锁紧时能精准、稳定插设至立柱的卡接槽,不易因振动、外力等因素脱离,适用于对安全性要求极高的儿童床。

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Abstract

The application relates to the field of children bed design and discloses a rail assembly and a children bed. The rail body of the rail assembly is respectively provided with a sliding locking mechanism at both ends along the length extension direction of the rail body. The sliding locking mechanism is in sliding cooperation or locking with a stand column arranged on one side of the rail body. The sliding locking mechanism comprises a limiting sleeve, a button and a bolt. The limiting sleeve is connected with the rail body and at least partially covers the outside of the button and the bolt. A first limiting column is arranged on the inside of the limiting sleeve. A cooperation hole is arranged on the bolt along the length extension direction of the rail body. A first elastic element is further arranged on the inside of the bolt. The first limiting column is inserted into the cooperation hole and elastically abuts against the first elastic element. A limiting groove is arranged on the limiting sleeve along the direction perpendicular to the length extension direction of the rail body. The button is at least partially clamped into the limiting groove. A cooperation inclined surface is formed between the button and the bolt. The button is configured to drive the bolt to elastically slide along the cooperation hole in the pressed or released state, so that one end of the bolt is inserted into or separated from a clamping groove on the stand column.
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Description

Technical Field

[0001] This application relates to the field of children's bed design, specifically a railing assembly and a children's bed. Background Technology

[0002] In the field of safety railings for children's beds, the railing assembly is the core structure that ensures safety during use, and its stability and ease of operation in conjunction with the uprights are of paramount importance.

[0003] Most of the fence components on the market today use bolts or ordinary clips to connect to the posts. The former requires tools to disassemble and assemble, which is cumbersome, time-consuming and laborious when adjusting the height or cleaning. The latter does not require tools, but the tightening force is difficult to control, and the gap between the clips is too large due to loosening, which cannot form a stable protection and cannot meet the needs of frequent adjustment scenarios.

[0004] Meanwhile, the locking mechanisms of existing fence components generally lack effective guiding and limiting designs. During long-term use, they are prone to component misalignment, jamming, or even failure due to external impacts, vibrations, or repeated operations. Some snap-on structures may also fail to fully engage with the column slots due to wear after frequent adjustments, causing the fence to slip unexpectedly and posing a safety hazard. Furthermore, most mechanisms lack elastic reset functions, meaning components cannot automatically return to their original positions after unlocking. This increases the difficulty of subsequent locking and is prone to misalignment leading to mating failures, resulting in significant deficiencies in overall safety and reliability. Utility Model Content

[0005] In order to solve or at least partially solve the above-mentioned technical problems, the first aspect of this application provides a fence assembly, including: a pole body, wherein sliding locking mechanisms are respectively provided at both ends of the pole body along its length extension direction, and the sliding locking mechanisms are configured to slide or lock with a column provided on one side of the pole body;

[0006] The sliding locking mechanism includes a limiting sleeve, a button, and a pin. The limiting sleeve is connected to the rod and at least partially covers the outside of the button and the pin. A first limiting post is provided on the inner side of the limiting sleeve.

[0007] The pin has a mating hole extending along the length of the rod, and a first elastic element is provided inside the pin. The first limiting post is inserted into the mating hole and elastically abuts against the first elastic element. The limiting sleeve has a limiting groove extending perpendicular to the length of the rod, and the button is at least partially engaged in the limiting groove.

[0008] The button and the pin form a mating slope. The button is configured to drive the pin to slide elastically along the mating hole when pressed or released, so that one end of the pin is inserted into or disengaged from the snap-fit ​​groove on the column.

[0009] Optionally, the inner side of the pin is provided with a receiving groove, and the mating hole is connected to the receiving groove;

[0010] The first elastic element is engaged within the receiving groove.

[0011] Optionally, the button has a guide groove along the direction perpendicular to the length of the rod, and the limiting sleeve has a second limiting post, which is inserted into the guide groove;

[0012] The button slides into the guide groove to drive the pin to insert into or disengage from the snap-fit ​​groove on the column.

[0013] Optionally, a second elastic element is provided in the guide groove;

[0014] One end of the second limiting post is elastically abutted against the second elastic element.

[0015] Optionally, the limiting sleeve is also provided with a guide hole;

[0016] The button has a guide post at one end facing the pin, and at least one end of the guide post is inserted into the guide hole to slide with the guide hole.

[0017] Optionally, the latch has a first clearance groove on the side facing the button, and the first clearance groove includes a first groove bottom and a first inclined surface;

[0018] The button has a second clearance groove on the side facing the latch, and the second clearance groove includes a second groove bottom and a second inclined surface;

[0019] The first groove bottom and the second groove bottom are parallel and slide against each other, and the first inclined surface abuts against the second inclined surface to form the mating inclined surface.

[0020] Optionally, both the first inclined surface and the second inclined surface are set at an angle to the direction of extension of the rod length.

[0021] Optionally, a sliding boss is provided on one side of the limiting sleeve, which is used to slide and engage with a groove opened on the inner side of the column.

[0022] A second aspect of this application also provides a children's bed, including two uprights and a railing assembly as described above, wherein the railing assembly is slidably engaged with or locked to the uprights; the top of the uprights is provided with a apex, and when the rod is moved to the top of the uprights, a sliding locking mechanism is wrapped around the apex.

[0023] Optionally, it also includes a support column, wherein the column and the support column are connected by a connecting rod; the top of the support column is provided with a apex, and the end of the connecting rod is engaged with the inside of the apex.

[0024] The railing assembly provided in this application, by setting sliding locking mechanisms at both ends of the rod, can flexibly achieve sliding engagement or locking with the upright, meeting different usage needs such as height adjustment and position fixation of the railing assembly. In the sliding locking mechanism, the limiting sleeve effectively wraps and protects the button and pin, preventing damage or accidental activation of the button and pin due to external impact; the first limiting post is inserted into the pin mating hole and elastically abuts against the first elastic element, providing stable guidance and restoring force for the pin's sliding, thereby ensuring that the pin can be accurately and stably inserted into the locking groove of the upright when locked, and is not easily dislodged due to vibration, external force, or other factors, making it suitable for children's beds with extremely high safety requirements.

[0025] The beveled design between the button and the pin transforms the pressing and releasing action of the button into the elastic sliding of the pin. Without the need for tools, simply pressing the button drives the pin back, unlocking the rod from the column. After releasing the button, the first elastic element can automatically reset the pin and insert it into the locking slot to complete the locking. The operation is simple and effortless, greatly reducing the operational threshold for adjusting and fixing the rod assembly. Whether for daily use by adults or in scenarios where ease of operation is required, it can significantly improve the user experience, while avoiding the problems of cumbersome disassembly and assembly of traditional bolt-fastened structures and laborious operation of snap-fit ​​structures. Attached Figure Description

[0026] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0027] Figure 1 This is a structural diagram of the children's bed in this application;

[0028] Figure 2 for Figure 1 A partial structural diagram of a children's bed;

[0029] Figure 3 for Figure 1 A partial structural diagram of the central column;

[0030] Figure 4 for Figure 1 Exploded view of the partial structure of the sliding locking mechanism and the rod body in cooperation;

[0031] Figure 5 for Figure 4 A cross-sectional view of the sliding locking mechanism in its assembled state at an angle.

[0032] 1. Rod body;

[0033] 2. Sliding locking mechanism; 21. Limiting sleeve; 211. First limiting post; 212. Limiting groove; 213. Second limiting post; 214. Guide hole; 215. Sliding boss; 22. Button; 221. Guide groove; 222. Second elastic element; 223. Guide post; 224. Second clearance groove; 225. Second groove bottom; 226. Second inclined surface; 23. Pin; 231. Mating hole; 232. First elastic element; 233. Receiving groove; 234. First clearance groove; 235. First groove bottom; 236. First inclined surface; 24. Mating inclined surface;

[0034] 3. Column; 31. Snap-fit ​​groove;

[0035] 4. Support column; 41. Connecting rod; 42. Top corner. Detailed Implementation

[0036] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0038] The following flowchart illustrates the operations performed to improve the safety performance of a vehicle. It should be understood that, depending on the actual situation, the preceding or following operations may not be performed precisely in sequence. Other operations may be added to these processes, or one or more operations may be removed from them.

[0039] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 As shown, this utility model proposes to protect a children's bed, which includes two uprights 3 and two support columns 4. Adjacent uprights 3 can be connected by a railing assembly, and adjacent support columns 4 and support columns 4 are connected to uprights 3 by connecting rods 41.

[0041] The fence assembly and the column 3 can slide or lock together, thereby adjusting the height of the fence assembly from the ground to meet the user's different height requirements.

[0042] It can be seen that, Figure 1 The number of side rail assemblies is one, corresponding to single-sided height adjustment of the children's bed. In some other optional embodiments, there may be two, three, or four side rail assemblies, thus allowing for multi-sided height adjustment of the children's bed. The specific choice can be made according to actual needs and is not limited here. When the number of side rail assemblies is increased, the number of corresponding uprights 3 and support columns 4 also needs to be adjusted accordingly.

[0043] In this embodiment, Figure 1 There is one central support rod assembly. Therefore, two of the four legs of the children's bed that are associated with the support rod assembly are called uprights 3, and the other two are called support columns 4. Of course, if there are two or more support rod assemblies, such as the children's bed having support rod assemblies on opposite sides or all four sides, then the support columns 4 are also called uprights 3.

[0044] Furthermore, the top of the column 3 is provided with a apex 42, which has an inner cavity for wrapping the end of the connecting rod 41 to avoid the end of the connecting rod 41 posing a safety hazard to the user.

[0045] For the fence assembly, please refer to Figures 2 to 5 The pole assembly includes a pole body 1, and two ends of the pole body 1 along its length extension direction are respectively provided with sliding locking mechanisms 2. The sliding locking mechanisms 2 are configured to slide or lock with a column 3 located on one side of the pole body 1.

[0046] It can be seen that when the rod 1 moves to the top of the column 3, the sliding locking mechanism 2 is wrapped inside the apex 42, and the apex 42 can protect the sliding locking mechanism 2.

[0047] This design allows for flexible sliding or locking with the column 3, meeting different usage needs such as height adjustment and position fixation of the fence assembly.

[0048] Please continue to refer to Figure 4 and Figure 5 The sliding locking mechanism 2 includes a limiting sleeve 21, a button 22, and a pin 23. The limiting sleeve 21 is connected to the rod 1 and at least partially covers the outside of the button 22 and the pin 23. A first limiting post 211 is provided on the inner side of the limiting sleeve 21. A mating hole 231 is provided on the pin 23 along the length extension direction of the rod 1. A first elastic element 232 is also provided on the inner side of the pin 23. The first limiting post 211 is inserted into the mating hole 231 and elastically abuts against the first elastic element 232. A limiting groove 212 is provided on the limiting sleeve 21 along the length extension direction perpendicular to the rod 1. The button 22 is at least partially locked in the limiting groove 212.

[0049] For the sliding locking mechanism 2, the limiting sleeve 21 effectively wraps and protects the button 22 and the pin 23, which can prevent the button 22 and the pin 23 from being damaged or accidentally touched by external force collisions; the first limiting post 211 is inserted into the mating hole 231 of the pin 23 and elastically abuts against the first elastic element 232, which is used to provide stable guidance and reset force for the sliding of the pin 23, thereby ensuring that the pin 23 can be accurately and stably inserted into the locking groove 31 of the column 3 when locked, and is not easy to be dislodged due to vibration, external force and other factors, which is suitable for children's beds with extremely high safety requirements.

[0050] Furthermore, a mating slope 24 is formed between the button 22 and the pin 23. The button 22 is configured to drive the pin 23 to slide elastically along the mating hole 231 in the pressed or released state, so that one end of the pin 23 is inserted into or disengaged from the snap-fit ​​groove 31 on the column 3.

[0051] By incorporating a beveled surface 24 between the button 22 and the pin 23, the pressing and releasing action of the button 22 is transformed into the elastic sliding of the pin 23. Without the need for tools, simply pressing the button 22 drives the pin 23 to retract, thus unlocking the rod 1 from the column 3. After releasing the button 22, the first elastic element 232 automatically resets the pin 23 and inserts it into the locking slot 31 to complete the locking. The operation of the button 22 and pin 23 is simple and effortless, greatly reducing the operational threshold for adjusting and fixing the rod assembly. Furthermore, it avoids the cumbersome disassembly and assembly problems of traditional bolt-fastened structures and the laborious operation of snap-fit ​​structures.

[0052] Please refer to Figure 2 and Figure 3 The number of snap-fit ​​grooves 31 on the inner side of the column 3 can be one or more, and there is no limitation here. It can be adjusted according to the actual adjustment needs.

[0053] In one embodiment, a receiving groove 233 is provided on the inner side of the pin 23, and the mating hole 231 is connected to the receiving groove 233; the first elastic member 232 is engaged in the receiving groove 233.

[0054] The design of the receiving groove 233 can provide a precise and stable installation and positioning space for the first elastic element 232, preventing the elastic element from shifting or falling off due to vibration and displacement during long-term use, ensuring that the elastic element always maintains a stable elastic contact with the first limit post 211, and ensuring the timeliness and reliability of the pin 23 reset.

[0055] Moreover, the receiving groove 233 can form a protective enclosure for the first elastic element 232, reducing the risk of aging caused by external dust and impurities, thereby extending the service life of the first elastic element 232 and further improving the overall stability of the sliding locking mechanism 2.

[0056] Please continue to refer to Figure 4 and Figure 5 The button 22 has a guide groove 221 along the length direction perpendicular to the rod 1, and the limiting sleeve 21 has a second limiting post 213, which is inserted into the guide groove 221. The button 22 slides with the guide groove 221 to drive the pin 23 to be inserted into or disengaged from the snap-fit ​​groove 31 on the column 3.

[0057] It is understood that the cooperation between the second limiting post 213 and the guide groove 221 provides precise guidance for the pressing and releasing action of the button 22, preventing the button 22 from shifting laterally or getting stuck during operation, and ensuring that the button 22 can stably act on the pin 23. Moreover, the guide groove 221 can also limit the range of motion of the button 22, preventing the button 22 from being damaged or dislodged from the limiting sleeve 21 due to excessive pressing, ensuring the smooth operation of the button 22, and thus improving the operational stability of the sliding locking mechanism 2.

[0058] Furthermore, a second elastic element 222 is provided in the guide groove 221; one end of the second limiting post 213 elastically abuts against the second elastic element 222.

[0059] The second elastic element 222 can provide elastic restoring force to the button 22, so that the button 22 can quickly and automatically return to its original position after being pressed to unlock, without the need for manual adjustment, which further simplifies the operation process.

[0060] Furthermore, the elastic abutment of the second elastic element 222 can buffer the impact force when the button 22 is pressed, reduce the rigid collision wear between the button 22 and the limit sleeve 21 and the pin 23, extend the service life of the button 22, and thus ensure that the button 22 always maintains a stable engagement with the pin 23, avoiding the impact of button 22 misalignment on the driving effect of the pin 23.

[0061] Please continue to refer to Figure 4 and Figure 5 The limiting sleeve 21 is also provided with a guide hole 214; the end of the button 22 facing the pin 23 is provided with a guide post 223, and at least one end of the guide post 223 is inserted into the guide hole 214 to slide with the guide hole 214.

[0062] That is, by using the guide post 223 and the guide hole 214 to guide and cooperate, the guiding accuracy of the sliding of the button 22 can be further enhanced, completely eliminating the problem of offset and tilting of the button 22 during operation, and ensuring that the button 22 is subjected to uniform force and moves smoothly when driving the pin 23 through the inclined surface 24.

[0063] Furthermore, the guide post 223 can enhance the connection stability between the button 22 and the limit sleeve 21, prevent the button 22 from loosening or shaking due to long-term use, and improve the structural compactness and durability of the sliding locking mechanism 2.

[0064] In one embodiment, the latch 23 has a first clearance groove 234 on the side facing the button 22, the first clearance groove 234 including a first groove bottom 235 and a first inclined surface 236; the button 22 has a second clearance groove 224 on the side facing the latch 23, the second clearance groove 224 including a second groove bottom 225 and a second inclined surface 226; the first groove bottom 235 and the second groove bottom 225 are arranged parallel to each other and slide against each other, the first inclined surface 236 and the second inclined surface 226 abut against each other and form a mating inclined surface 24.

[0065] The bevel 24 provides a stable support surface for the relative sliding of the pin 23 and the button 22, preventing jamming or sticking during the sliding process. Furthermore, by disassembling the bevel 24 into the clearance groove between the pin 23 and the button 22, the bevel machining can be more precisely controlled, ensuring higher transmission efficiency and smoother force conversion when the button 22 is pressed. This reduces operational effort or drive failure caused by insufficient bevel precision, and improves the response speed of unlocking and locking.

[0066] Furthermore, the staggered fit between the pin 23 and the button 22, along with the first clearance groove 234 and the second clearance groove 224, can serve as guides and supports, thereby further ensuring the stability of the movement of the pin 23 and the button 22.

[0067] Furthermore, both the first inclined surface 236 and the second inclined surface 226 are set at an angle to the length extension direction of the rod 1.

[0068] By utilizing the cooperation of the first inclined surface 236 and the second inclined surface 226, the pressing force of the button 22 perpendicular to the direction of the rod 1 can be more efficiently converted into the sliding force of the pin 23 along the length direction of the rod 1, thereby reducing the loss of force and making the operation of the button 22 easier.

[0069] Moreover, the angle setting can be flexibly adjusted according to actual usage needs to adapt to different force requirements, ensuring that while the sliding stroke of the pin 23 is sufficient, the pressing stroke of the button 22 is not too long, which would cause inconvenience in operation, thus balancing the ease of operation and the practicality of the structure.

[0070] Please continue to refer to Figure 4 The limiting sleeve 21 is also provided with a sliding boss 215 on one side, which is used to slide and cooperate with the sliding groove opened on the inner side of the column 3.

[0071] That is, a groove is provided on the inner side of the column 3, and the length extension direction of the groove is consistent with the length direction of the column 3. When the sliding boss 215 on one side of the limiting sleeve 21 slides relative to the groove, the height of the rod 1 can be adjusted.

[0072] In summary, the fence assembly proposed in this application is simple and labor-saving to operate, greatly reducing the operational threshold for adjusting and fixing the fence assembly. It is suitable for daily use by adults and also adaptable to scenarios that require ease of operation, significantly improving the user experience. At the same time, it avoids the problems of cumbersome disassembly and assembly of traditional bolt-fastened structures and laborious operation of snap-on structures.

[0073] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different obstacle objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0074] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0075] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of this application 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0076] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation", "connection", "joining", and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can also refer to mechanical connections. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0077] While this application discloses preferred embodiments as described above, it is not intended to limit the scope of this application. Any changes and modifications can be made by those skilled in the art without departing from the spirit and scope of this application. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall fall within the protection scope defined by the claims of this application.

Claims

1. A fence assembly, characterized in that, include: The rod body has sliding locking mechanisms at both ends along its length extension direction. The sliding locking mechanisms are configured to slide or lock with a column located on one side of the rod body. The sliding locking mechanism includes a limiting sleeve, a button, and a pin. The limiting sleeve is connected to the rod and at least partially covers the outside of the button and the pin. A first limiting post is provided on the inner side of the limiting sleeve. The pin has a mating hole extending along the length of the rod, and a first elastic element is provided inside the pin. The first limiting post is inserted into the mating hole and elastically abuts against the first elastic element. The limiting sleeve has a limiting groove extending perpendicular to the length of the rod, and the button is at least partially engaged in the limiting groove. The button and the pin form a mating slope. The button is configured to drive the pin to slide elastically along the mating hole when pressed or released, so that one end of the pin is inserted into or disengaged from the snap-fit ​​groove on the column.

2. The retaining wall assembly according to claim 1, characterized in that, The inner side of the pin is provided with a receiving groove, and the mating hole is connected to the receiving groove; The first elastic element is engaged within the receiving groove.

3. The retaining wall assembly according to claim 1, characterized in that, The button has a guide groove along the direction perpendicular to the length of the rod, and the limiting sleeve has a second limiting post, which is inserted into the guide groove. The button slides into the guide groove to drive the pin to insert into or disengage from the snap-fit ​​groove on the column.

4. The retaining wall assembly according to claim 3, characterized in that, A second elastic element is provided inside the guide groove; One end of the second limiting post is elastically abutted against the second elastic element.

5. The retaining wall assembly according to claim 3, characterized in that, The limiting sleeve is also provided with a guide hole; The button has a guide post at one end facing the pin, and at least one end of the guide post is inserted into the guide hole to slide with the guide hole.

6. The retaining wall assembly according to claim 1, characterized in that, The latch has a first clearance groove on the side facing the button, and the first clearance groove includes a first groove bottom and a first inclined surface; The button has a second clearance groove on the side facing the latch, and the second clearance groove includes a second groove bottom and a second inclined surface; The first groove bottom and the second groove bottom are parallel and slide against each other, and the first inclined surface abuts against the second inclined surface to form the mating inclined surface.

7. The retaining wall assembly according to claim 6, characterized in that, Both the first inclined surface and the second inclined surface are set at an angle to the direction of extension of the rod length.

8. The retaining wall assembly according to claim 1, characterized in that, The limiting sleeve is also provided with a sliding boss on one side, which is used to slide and engage with the sliding groove opened on the inner side of the column.

9. A children's bed, characterized in that, It includes two uprights and a fence assembly as described in any one of claims 1-8, wherein the fence assembly is slidably engaged with or locked to the uprights; The top of the column is provided with a apex corner. When the rod is moved to the top of the column, the sliding locking mechanism wraps around the apex corner.

10. The children's bed according to claim 9, characterized in that, It also includes support columns, and the columns are connected to each other and to the support columns via connecting rods; The support column has a apex corner at its top, and the end of the connecting rod is engaged with the inside of the apex corner.