Combined child growth chair with locking structure
By using an adjustable insert plate and slot for insertion and a high-strength reinforced tube design, the problem of the crossbeam of the children's growth chair being prone to loosening is solved, achieving flexible adjustment and stable connection of the seat, ensuring safety and resource conservation during the child's growth process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘化林
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-09
AI Technical Summary
The crossbeam structure of existing children's high chairs is prone to loosening due to children's active nature, resulting in decreased seat stability, safety hazards, and high maintenance costs.
It adopts an adjustable insert plate and slot insertion connection structure, combined with high-strength reinforced tubes and crossbeam assemblies, and is connected by threaded positioning blocks and screws to enhance the stability and ease of adjustment of the seat.
It enables flexible adjustment of seat height to adapt to changes in children's height during growth, improves the stability and safety of the seat, reduces resource waste, and lowers the frequency of maintenance.
Smart Images

Figure CN224330713U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of children's chair technology, and in particular to a modular children's growth chair with a locking structure. Background Technology
[0002] A suitable chair is crucial for a child's healthy development during their growth. Adjustable children's chairs have emerged to meet this need. These chairs can adjust their height according to a child's height, weight, and skeletal development, ensuring that the child can maintain a correct and comfortable sitting posture at any stage of growth, bringing great convenience to parents. As people pay more and more attention to children's health, the market demand for adjustable children's chairs continues to grow.
[0003] However, existing children's high chairs have some problems in actual use. Because children are naturally active and often shake the chair during use, most high chairs use a crossbeam structure as an important support part of the seat base. This structure is prone to loosening and damage when subjected to the shaking force caused by children's active movements over a long period of time. For example, some traditional children's high chairs use screws and other connectors to fix the crossbeam to other parts, but repeated shaking causes the screws to gradually loosen, which in turn causes the connection between the crossbeam and other parts of the seat to become loose. Once the crossbeam structure becomes loose, it will not only affect the normal use of the seat and cause a significant decrease in the seat's stability, but may also cause children to fall and other accidents during use, posing a serious threat to children's safety. Frequent damage also increases the repair costs and time costs for parents, and reduces the product's lifespan and cost-effectiveness. Utility Model Content
[0004] In order to overcome the problem that the crossbeam structure of the seat base of existing children's growth chairs is prone to loosening and damage due to children's active nature, this utility model provides a modular children's growth chair with a locking structure.
[0005] The technical solution is as follows: A modular children's growth chair with a locking structure includes a children's chair assembly, a backrest, an adjustable insert, a reinforcing tube, and a crossbeam assembly; the children's chair assembly includes a seat support plate, a base, and a slot; two seat support plates are provided; a base is fixedly installed at the rear end of the seat support plate; a slot is provided on the inner side of the seat support plate; a backrest is provided between the two seat support plates; an adjustable insert is provided below the backrest; a reinforcing tube is provided below the adjustable insert; and a crossbeam assembly is provided between the two bases.
[0006] Furthermore, the back panel and the seat support plate are inserted into each other, and the two sides of the back panel are fixedly connected to the seat support plate by screws; the adjustable insert plate has internal connection settings for inserting into slots on both sides.
[0007] Furthermore, the two ends of the reinforcing tube are fixedly connected to the seat support plate by screw threads.
[0008] Furthermore, a crossbeam is provided between the two bases; both ends of the crossbeam are provided with pins, and the pins are integrally formed with the crossbeam, and the pins are inserted into the inside of the base for fixed connection.
[0009] Furthermore, positioning block slots are provided inside both ends of the crossbeam, and the positioning block slots are integrally formed with the crossbeam.
[0010] Furthermore, the positioning block slot is provided with a threaded positioning block inside, and the threaded positioning block is inserted into the positioning block slot.
[0011] Furthermore, screw holes are provided inside both ends of the crossbeam, and the screw holes pass through the crossbeam, the positioning block slot, and the threaded positioning block. The two ends of the crossbeam are fixedly connected to the base after passing through the crossbeam, the positioning block slot, and the threaded positioning block with screws.
[0012] The beneficial effects are as follows: This utility model uses an adjustable insert plate and slot insertion connection structure. This connection method, along with the evenly distributed positioning holes on the insert plate and the limiting buckles in the slot, forms a meshing engagement. When the position of the adjustable insert plate needs to be adjusted, simply press the unlocking buckle to easily move the insert plate up and down within the slot. After accurately positioning it to the desired height, the buckle automatically engages to secure it. With this flexible connection method, the adjustable insert plate achieves flexible adjustment and splicing functions, effectively adapting to the height changes of children from infancy to adolescence. Children grow and develop extremely rapidly, with significant height increases within just a few years. Traditional fixed-height child seats cannot meet the needs of children's growth, often requiring frequent seat replacements, resulting in resource waste. However, the adjustable insert plate and slot insertion connection... The innovative design of the seat groove allows for quick height adjustment without replacing the entire seat as the child grows. This significantly improves the efficiency of seat adjustment during a child's growth, truly achieving the goal of a seat that grows with the child and avoiding the waste of resources caused by frequent seat replacements. Furthermore, the reinforcing tube plays a crucial role in the seat structure. Made of high-strength alloy, it is securely connected to the seat support plates through a special process. The reinforcing tube runs horizontally through multiple support plates, acting like a load-bearing beam in a building, connecting the scattered support plates into a stable overall frame. This effectively enhances the connection strength and stability between the support plates, ensuring the safety and reliability of the seat structure even when the child is active, providing solid support and protection.
[0013] By setting up the crossbeam assembly, the pin of the crossbeam assembly is connected to the base, which improves the splicing positioning accuracy. The threaded positioning block is used to fill the tightness of the threaded connection between the screw and the inside of the crossbeam, reducing the gap between the external screw and the threaded holes at both ends of the crossbeam, improving stability, and preventing the screw from loosening due to structural shaking during use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the overall rear-view three-dimensional structure of this utility model;
[0016] Figure 3 This is a three-dimensional structural diagram of the seat support plate and base combination of this utility model;
[0017] Figure 4 This is a three-dimensional structural diagram of the adjustable insert plate of this utility model;
[0018] Figure 5 This is a three-dimensional structural diagram of the crossbeam assembly of this utility model.
[0019] In the attached diagram, the following are the reference numerals: 1. Child chair assembly; 2. Backrest; 3. Adjustable insert; 4. Reinforcing tube; 5. Crossbeam assembly; 101. Seat support plate; 102. Base; 103. Slot; 501. Crossbeam; 502. Pin; 503. Positioning block slot; 504. Threaded positioning block; 505. Screw hole. Detailed Implementation
[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0021] Example 1
[0022] like Figures 1-5 As shown, the modular children's growth chair with locking structure includes a children's chair assembly 1, a backrest 2, an adjustable insert 3, a reinforcing tube 4, and a crossbeam assembly 5. The children's chair assembly 1 includes a seat support plate 101, a base 102, and a slot 103. There are two seat support plates 101. The base 102 is fixedly installed at the rear end of the seat support plate 101. The slot 103 is provided on the inner side of the seat support plate 101. The backrest 2 is provided between the two seat support plates 101. The adjustable insert 3 is provided below the backrest 2. The reinforcing tube 4 is provided below the adjustable insert 3. The crossbeam assembly 5 is provided between the two bases 102.
[0023] The back panel 2 is inserted into the seat support plate 101, and the two sides of the back panel 2 are fixedly connected to the seat support plate 101 by screws; the two sides of the adjustable insert plate 3 are inserted into the internal connection of the slot 103.
[0024] The two ends of the reinforcing tube 4 are fixedly connected to the seat support plate 101 by screw threads.
[0025] A crossbeam 501 is provided between the two bases 102; both ends of the crossbeam 501 are provided with pins 502, and the pins 502 are integrally formed with the crossbeam 501, and the pins 502 are inserted into the inner side of the base 102 for fixed connection.
[0026] The two ends of the crossbeam 501 are provided with positioning block slots 503, and the positioning block slots 503 are integrally formed with the crossbeam 501.
[0027] Through the insert-type connection structure of the adjustable insert plate 3 and the slot 103, this connection method, along with the evenly distributed positioning holes on the insert plate and the limiting buckles in the slot, forms an interlocking engagement. When the position of the adjustable insert plate 3 needs to be adjusted, simply press the unlocking buckle to easily move the insert plate up and down in the slot. After accurately positioning it to the desired height, the buckle automatically engages to complete the fixation. With this flexible connection method, the adjustable insert plate 3 achieves flexible adjustment and splicing functions in its vertical position, effectively adapting to the height changes of children from infancy to adolescence. Children grow and develop extremely rapidly, with significant height increases in just a few years. Traditional fixed-height child seats cannot meet the needs of children during their growth process, often requiring frequent seat replacements, resulting in resource waste. The innovative design using the adjustable insert plate 3 and slot 103... The design allows for quick and easy adjustment of the seat height as children grow, eliminating the need to replace the entire seat. This significantly improves the efficiency of seat adjustment during growth, ensuring a single seat accompanies the child's development and avoiding the waste of resources associated with frequent replacements. Furthermore, the reinforcing tube 4 plays a crucial role in the seat structure. Made of high-strength alloy, it is securely connected to the seat support plate 101 using a special process. The reinforcing tube 4 runs horizontally through multiple seat support plates 101, acting like a load-bearing beam in a building, connecting the scattered support plates into a stable overall frame. This effectively enhances the connection strength and stability between the support plates, ensuring the safety and reliability of the seat structure even when children are active, providing solid support and protection.
[0028] Example 2
[0029] Based on Example 1, such as Figures 1-5 As shown, a threaded positioning block 504 is provided inside the positioning block slot 503, and the threaded positioning block 504 is inserted into the positioning block slot 503.
[0030] Both ends of the crossbeam 501 are provided with screw holes 505, and the screw holes 505 pass through the crossbeam 501, the positioning block slot 503, and the threaded positioning block 504. The two ends of the crossbeam 501 are fixedly connected to the base 102 after passing through the crossbeam 501, the positioning block slot 503, and the threaded positioning block 504 with screws.
[0031] By setting up the crossbeam assembly 5, the pin 502 of the crossbeam assembly 5 is connected to the base 102, which improves the splicing positioning accuracy. The threaded positioning block 504 is used to fill the tightness of the threaded connection between the screw and the internal thread of the crossbeam 501, reduce the gap between the external screw and the internal threaded holes at both ends of the crossbeam 501, improve stability, and prevent the screw from loosening due to structural shaking during use.
Claims
1. A modular children's high chair with a locking structure, comprising a children's chair assembly (1), characterized in that: It also includes a back panel (2), an adjustable insert plate (3), a reinforcing tube (4), and a crossbeam assembly (5); the child chair assembly (1) includes a seat support plate (101), a base (102), and a slot (103); there are two seat support plates (101); the base (102) is fixedly installed at the rear end of the seat support plate (101); the slot (103) is installed on the inner side of the seat support plate (101); a back panel (2) is installed between the two seat support plates (101); an adjustable insert plate (3) is installed below the back panel (2); a reinforcing tube (4) is installed below the adjustable insert plate (3); and a crossbeam assembly (5) is installed between the two bases (102).
2. The modular children's growth chair with locking structure according to claim 1, characterized in that: The back panel (2) is inserted into the seat support plate (101), and the two sides of the back panel (2) are fixedly connected to the seat support plate (101) by screws; the two sides of the adjustable insert plate (3) are inserted into the internal connection of the slot (103).
3. The modular children's growth chair with locking structure according to claim 1, characterized in that: The two ends of the reinforcing tube (4) are fixedly connected to the seat support plate (101) by screw threads.
4. The modular children's growth chair with locking structure according to claim 1, characterized in that: A crossbeam (501) is provided between the two bases (102); both ends of the crossbeam (501) are provided with pins (502), and the pins (502) are integrally formed with the crossbeam (501), and the pins (502) are inserted into the inner side of the base (102) for fixed connection.
5. The modular children's growth chair with locking structure according to claim 4, characterized in that: The two ends of the crossbeam (501) are provided with positioning block slots (503), and the positioning block slots (503) are integrally formed with the crossbeam (501).
6. The modular children's growth chair with locking structure according to claim 5, characterized in that: The positioning block slot (503) is provided with a threaded positioning block (504) inside, and the threaded positioning block (504) is inserted into the positioning block slot (503).
7. The modular children's growth chair with locking structure according to claim 6, characterized in that: Both ends of the crossbeam (501) are provided with screw holes (505), and the screw holes (505) pass through the crossbeam (501), the positioning block slot (503), and the threaded positioning block (504). The two ends of the crossbeam (501) are fixedly connected to the base (102) after passing through the crossbeam (501), the positioning block slot (503), and the threaded positioning block (504) with screws.