Guardrail lifting device for baby playpen
The lifting guardrail, designed with a limit guide mechanism, solves the problems of inconvenient cleaning and space occupation of crib guardrails, and achieves smooth lifting and lowering of the guardrail while improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN HBB CHILDREN ARTICLES CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-06-05
AI Technical Summary
Existing crib rails are usually fixed or flip-up, which makes cleaning inconvenient or space-consuming, resulting in poor adaptability.
The lifting guardrail, designed with a limit guide mechanism, includes a guardrail, a limit guide mechanism, a slide, and a spring. This enables the guardrail to lock automatically and lift synchronously, reducing operational complexity and enhancing stability.
It enables smooth raising and lowering of the guardrail, simplifies the cleaning process, saves space, and improves the convenience and safety of the crib.
Smart Images

Figure CN224320457U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of baby crib technology, specifically to a lifting device for the guardrail of a baby playpen. Background Technology
[0002] A crib is a bed used for infants and toddlers. There are many different styles of cribs, which can be roughly divided into solid wood cribs, bamboo cribs, rattan cribs, and cribs made of a combination of materials.
[0003] There are some safety hazards in the use of cribs, which parents should pay attention to and eliminate in time. In order to prevent babies from falling off the crib, the crib is usually equipped with guardrails. However, the existing crib guardrails are usually fixed or flip-up. If they are fixed, it will be inconvenient to clean the crib due to the obstruction of the guardrail, which is not very practical. If they are flip-up, they will take up more space and are not very adaptable. Summary of the Invention
[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a guardrail lifting device for an infant playpen, which effectively solves the problem of poor performance of existing infant playpen.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lifting device for the guardrail of an infant playpen, comprising an infant bed body and two lifting guardrails disposed on both sides of the infant bed body. The lifting guardrails include railings and a limiting guide mechanism disposed on the railings. The railings are movably installed on the infant bed body through the limiting guide mechanism.
[0006] Furthermore, there are two limiting and guiding mechanisms, which are located at both ends of the railing respectively.
[0007] Furthermore, the crib body includes a bed board and headboards located at both ends of the bed board. The headboards have sliding grooves adapted to the limiting and guiding mechanisms. These grooves have no complex closed structure, making it easy to clean dust or debris, ensuring smooth lifting and lowering. Limiting holes are located at both ends of the grooves. Limiting and guiding mechanisms are also provided at both ends of the railings to ensure synchronous movement on both sides during lifting and lowering, preventing jamming or tilting caused by unilateral force, and enhancing overall stability.
[0008] Furthermore, the limiting and guiding mechanism includes a frame, a partition, a pull rod, a pressure rod, a spring, and a slider. The frame is divided into upper and lower layers by the partition. The pull rod is movably installed on the lower layer of the frame, and the slider is movably installed on the upper layer. The two ends of the pressure rod are hinged to the pull rod and the slider, respectively. The spring is installed between the inner wall of the upper layer and the slider. The spring drives the slider to move along the upper layer of the frame. In its normal state, the spring pushes the slider into the limiting hole, realizing the automatic locking of the guardrail without the need for additional manual locking steps, reducing operational complexity. The limiting hole, through mechanical locking, prevents accidental movement of the guardrail and avoids height changes due to accidental contact, thus enhancing safety.
[0009] Furthermore, the two ends of the frame are provided with pull rod grooves that are adapted to the pull rod, and the partition is provided with a pressure groove that is adapted to the pressure rod.
[0010] Furthermore, the pull rod is arc-shaped. This arc design is ergonomic, making it easier for users to press down the rod with one hand.
[0011] After adopting the above technical solution, the beneficial effects of this utility model are as follows: both ends of the railing are equipped with limiting and guiding mechanisms to ensure that both sides move synchronously during the lifting process, avoid jamming or tilting caused by unilateral force, and enhance overall stability. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the structure of the baby bed body in this utility model.
[0015] Figure 3 This is a schematic diagram of the limiting and guiding mechanism in this utility model.
[0016] Figure 4 This is a schematic diagram of the slide groove in this utility model.
[0017] Explanation of reference numerals in the attached drawings: Baby crib body 1, bed board 11, headboard 12, slide groove 121, limiting hole 122, lifting guardrail 2, railing 21, limiting guide mechanism 22, frame 221, partition 222, pull rod 223, pressure rod 224, spring 225, slider 226, pull rod slide groove 227, pressure groove 228. Detailed Implementation
[0018] See Figure 1-4 As shown, the technical solution adopted in this specific embodiment is as follows: the baby playpen guardrail lifting device consists of a baby bed body 1 and lifting guardrails 2 disposed on both sides of the baby bed body 1. The baby bed body 1 includes a bed board 11 and headboards 12 at both ends. The headboards 12 are provided with open sliding grooves 121, which are easy to clean, and limiting holes 122 are provided at both ends of the sliding grooves 121.
[0019] Each lifting guardrail 2 consists of a railing 21 and limiting guide mechanisms 22 located at both ends of the railing 21. The double limiting guide mechanisms 22 ensure synchronous and stable lifting. The limiting guide mechanism 22 includes a frame 221, a partition 222, a pull rod 223, a pressure rod 224, a spring 225, and a slider 226. The frame 221 is divided into a double-layer structure by the partition 222: the lower layer of the frame 221 is equipped with an arc-shaped pull rod 223, which is ergonomically designed for easy one-handed operation; the upper layer of the frame 221 is equipped with a slider 226, which is hinged to the pull rod 223 via the pressure rod 224. The spring 225 is installed between the inner wall of the upper layer and the slider 226. The spring 225 is used to drive the slider 226 to move along the upper layer of the frame 221, and the spring 225 pushes it to automatically engage with the limiting hole 122 to achieve locking.
[0020] The working principle of this utility model is as follows: 1. Unlocking stage (pressing up the pull rod 223, releasing the slider 226).
[0021] User operation: Hold the railing 21 with one hand and press the lever 223 upwards (ergonomic and effortless).
[0022] Mechanical linkage:
[0023] The pull rod 223 slides upward along the pull rod groove 227 on the lower layer of the frame 221.
[0024] The pull rod 223 pushes the upper slider 226 through the pressure rod 224 (hinged connection), overcoming the elastic force of the spring 225 and moving into the frame 221.
[0025] The slider 226 retracts from the limiting hole 122 of the headstock 12, releasing the guardrail from its fixed state.
[0026] Spring 225 is compressed to store rebound force for subsequent automatic locking.
[0027] 2. Adjustment Phase (Adjusting the Guardrail Height)
[0028] User operation: Keep the lever 223 pressed up, and push the railing 21 up or down to slide along the slide groove 121 of the headboard 12.
[0029] Wayfinding Design:
[0030] The slide 121 restricts the movement trajectory, ensuring a smooth and wobbly lifting process and preventing the guardrail from tilting.
[0031] 3. Locking phase (release lever 223, spring 225 returns to its original position)
[0032] User operation: Release lever 223 to stop applying pressure.
[0033] Spring 225 releases its elastic force, pushing slider 226 to return to its original position. Slider 226 engages with the corresponding limiting hole 122 (such as the top, middle, or bottom hole) in the slide groove 121. Pull rod 223, through linkage with pressure rod 224, springs back to its initial position, completing the locking.
[0034] Security verification:
[0035] A "click" sound should be heard when the limit hole 122 and the slider 226 engage to confirm that the lock is in place. The guardrail should not be able to move manually, indicating successful locking.
[0036] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A lifting device for the guardrail of an infant playpen, characterized in that: The crib includes a crib body (1) and two lifting guardrails (2) located on both sides of the crib body (1). The lifting guardrails (2) include railings (21) and limiting guide mechanisms (22) installed on the railings (21). The railings (21) are movably installed on the crib body (1) through the limiting guide mechanisms (22).
2. The guardrail lifting device for an infant playpen according to claim 1, characterized in that: Two limiting and guiding mechanisms (22) are provided, and they are located at both ends of the railing (21).
3. The guardrail lifting device for an infant playpen according to claim 1, characterized in that: The crib body (1) includes a bed board (11) and headboards (12) located at both ends of the bed board (11). The headboard (12) is provided with a sliding groove (121) adapted to the limiting guide mechanism (22), and the sliding groove (121) is provided with limiting holes (122) at both ends.
4. The guardrail lifting device for an infant playpen according to claim 1, characterized in that: The limiting and guiding mechanism (22) includes a frame (221), a partition (222), a pull rod (223), a pressure rod (224), a spring (225), and a slider (226). The frame (221) is divided into upper and lower layers by the partition (222). The pull rod (223) is movably installed on the lower layer of the frame (221), and the slider (226) is movably installed on the upper layer of the frame (221). The two ends of the pressure rod (224) are hinged to the pull rod (223) and the slider (226) respectively. The spring (225) is installed between the inner wall of the upper layer and the slider (226). The spring (225) is used to drive the slider (226) to move along the upper layer of the frame (221).
5. The guardrail lifting device for an infant playpen according to claim 4, characterized in that: The frame (221) has pull rod grooves (227) at both ends that are adapted to the pull rod (223), and the partition (222) has pressure grooves (228) that are adapted to the pressure rod (224).
6. The guardrail lifting device for an infant playpen according to claim 4, characterized in that: The pull rod (223) is arc-shaped.