Child safety seat

Abstract

A child safety seat comprises a base and a seat assembly, the base comprises a supporting part and a backrest part, and the child safety seat is characterized in that an L-shaped reinforcing pipe made of metal is embedded in the base and comprises a horizontal extending section and a vertical extending section, the horizontal extending section extends along the supporting part, and the vertical extending section extends towards the backrest part; and the extension angle is matched with a connecting structure of the supporting part and the backrest part. Meanwhile, mounting grooves are formed in the supporting part and the backrest part and used for embedding L-shaped reinforcing pipes, a connecting plate is arranged behind the backrest part, the L-shaped reinforcing pipes are fixed through mechanical connecting pieces, the cross sections of the L-shaped reinforcing pipes are in a closed ring shape, and the multiple L-shaped reinforcing pipes are arranged, so that the overall structural strength of the seat is remarkably improved, and the impact resistance is further improved; deformation and damage risks of the seat in use are effectively reduced, more reliable guarantee is provided for riding safety of children, and the automobile seat is convenient to install, stable in structure and suitable for various automobile travel scenes.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts and safety technology, specifically to a child safety seat. Background Technology

[0002] In modern society, with the widespread use of automobiles, child passenger safety has become a critical issue of great concern. Child safety seats, as key equipment for ensuring child passenger safety, have their performance and quality directly impacting children's lives.

[0003] Currently, injection molding is widely used in the manufacturing of child safety seats due to its advantage of quickly and mass-producing complex-shaped components. However, the materials used in injection molding have significant limitations, with insufficient strength being a particularly prominent issue. In actual use, child safety seats need to withstand various external forces, such as bumps during vehicle movement, inertial forces generated during acceleration and deceleration, and impact forces in extreme situations like collisions. Due to the inherent strength limitations of injection molding materials, existing injection-molded child safety seats are prone to deformation or even damage after prolonged use or exposure to significant external forces. This insufficient strength seriously affects the safety and reliability of child safety seats, failing to provide stable and reliable protection for children.

[0004] In past child safety seat products, taking the child safety seat with application number 202510261895.2 as an example, this patent application failed to fully consider the critical issue of insufficient strength of the injection molding material when designing the base. This results in the seat lacking effective reinforcement measures when facing various external forces, leading to poor structural stability. When the vehicle encounters an emergency, the existing seat structure may not be able to effectively distribute and withstand external forces, causing certain safety hazards for consumers during use.

[0005] In summary, existing child safety seats have significant deficiencies in terms of strength, and there is an urgent need to develop a new seat strength enhancement structure to compensate for the insufficient strength of injection molding materials, enhance the overall stability of the seat, and ensure reliable safety protection for children in various complex usage environments. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a child safety seat that, by setting a strength-enhancing structure, effectively solves the problem of insufficient strength of existing injection-molded child safety seats, and enhances the overall stability of the seat and improves the safety of children riding in vehicles.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a child safety seat, including a base and a seat assembly disposed on the base, the base including a support part and a backrest, and an L-shaped reinforcing tube made of metal embedded in the base, the L-shaped reinforcing tube including a horizontal extension section and a vertical extension section;

[0008] The horizontal extension section extends along the support portion, and the vertical extension section extends from the end of the horizontal extension section toward the backrest. Its extension direction is adapted to the connection structure between the support portion and the backrest to improve the structural strength and impact resistance of the base.

[0009] To further optimize the fit between the vertical extension section and the backrest, and to enable the L-shaped reinforcing tube to better enhance the structural strength, preferably, the vertical extension section is inclined, and the inclination angle of the vertical extension section is adapted to the inclination angle of the backrest, ensuring effective support at each stress point.

[0010] To facilitate the installation of the L-shaped reinforcing tube and improve its tightness and stability in connection with the base, preferably, the support part and the backrest are respectively provided with mounting grooves. The horizontal extension of the L-shaped reinforcing tube is embedded in the mounting groove of the support part, and the vertical extension is embedded in the mounting groove of the backrest, so that the L-shaped reinforcing tube and the base are better integrated into a whole.

[0011] To avoid stress concentration at the L-shaped reinforcing tube connection and the base mounting groove connection, and to improve the overall structural durability, preferably, the connection between the horizontal extension section and the vertical extension section has an arc-shaped transition structure, and the mounting groove at the connection between the support and the backrest also has a smoothly transitioning arc-shaped structure, with the arc curvature radii of both matching to disperse stress and extend service life.

[0012] To ensure that the L-shaped reinforcing tube is firmly fixed to the backrest and will not loosen during use, preferably, the L-shaped reinforcing tube is fixed to the backrest by a mechanical connector, which is at least one selected from bolts, screws or rivets to provide a reliable connection.

[0013] To further enhance the fixing effect between the L-shaped reinforcing tube and the backrest and form a more stable connection structure, preferably, a connecting plate is provided at the rear of the backrest. The mechanical connector passes through the connecting plate and the backrest sequentially from back to front and is then fixedly connected to the L-shaped reinforcing tube to form a three-point reinforcing and fixing structure, thereby improving overall stability.

[0014] In order to optimize the material utilization efficiency and structural performance while ensuring the strength of the L-shaped reinforcing tube, preferably, the cross-section of the L-shaped reinforcing tube is a closed ring structure, and its cross-sectional shape includes any one of circular, elliptical, rectangular or rounded rectangle. The appropriate cross-sectional shape is selected according to different needs to improve the structural strength and impact resistance.

[0015] To further enhance the overall strength and impact resistance of the base and make the stress distribution more uniform, preferably, at least two L-shaped reinforcing tubes are provided, with each L-shaped reinforcing tube arranged parallel to each other at intervals along the width direction of the base, thereby enhancing the support and impact resistance of the base from multiple positions.

[0016] To ensure the flatness and stability of the seat assembly installation and to avoid the L-shaped reinforcing tube affecting the installation of the seat assembly, preferably, the support portion of the base has a top opening for installing a mounting cavity for the seat assembly, and the mounting groove is opened at the bottom of the mounting cavity. After installation, the top surface of the L-shaped reinforcing tube is flush with or sunken to the bottom surface of the mounting cavity to ensure the compatibility of the installation.

[0017] Compared with existing technologies, the advantages of this invention are as follows: By embedding an L-shaped metal reinforcing tube within the base, with the horizontal extension of the L-shaped reinforcing tube extending along the base support and the vertical extension extending from the end of the horizontal extension towards the back of the base, the extension direction is adapted to the connection structure between the support and the backrest. Because the L-shaped reinforcing tube is made of metal, it possesses high strength. The rational layout of the horizontal and vertical extensions effectively disperses and withstands external forces, greatly enhancing the structural strength of the base. During vehicle operation, whether encountering bumps, inertial forces from acceleration and deceleration, or impact forces during collisions, the L-shaped reinforcing tube plays a crucial role, reducing the possibility of deformation or even damage to the seat due to insufficient strength of the injection-molded material, improving the seat's impact resistance, and thus providing more reliable safety protection for children. This invention solves the problem of poor seat safety and reliability caused by insufficient strength of injection-molded materials in existing technologies, and avoids the risk of injury to children due to structural instability; it also eliminates the need for large-scale modifications to existing production processes, reducing production costs and enhancing the product's market competitiveness. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0019] Figure 2 This is a schematic diagram of the mating structure between the base and the L-shaped reinforcing tube in this embodiment;

[0020] Figure 3 for Figure 2 A schematic diagram of the reverse structure in the middle;

[0021] Figure 4 This is an exploded structural diagram of the base, L-shaped reinforcing tube, and connecting plate in this embodiment. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] Figures 1 to 4 The diagram shown is a schematic diagram of this embodiment. The child safety seat in this embodiment includes components such as a base 1, a seat assembly 2, an L-shaped reinforcing tube 3, a mounting groove 4, a mechanical connector 5, and a connecting plate 6. The following is a detailed description with reference to the accompanying drawings.

[0024] Base and seat assembly: Reference Figure 1 and Figure 2 As shown, the base 1 includes a support portion 11 and a backrest 12, which together form a stable frame structure, providing a stable support base for the seat assembly 2. The support portion 11 is responsible for bearing the weight of the child and the seat assembly 2, while the backrest 12 provides auxiliary support and protection for the back of the seat assembly 2 when the child is riding in it.

[0025] L-shaped reinforcing tube: Reference Figures 2 to 4 As shown, the L-shaped reinforcing tube 3 embedded in the base 1 is a key component for enhancing the strength of the seat. It is made of high-strength metal, such as aluminum alloy, which reduces overall weight while ensuring strength. Its horizontal extension 31 extends along the support 11, with a precisely designed length covering the main stress area of ​​the support 11. The vertical extension 32 extends from the end of the horizontal extension 31 towards the backrest 12, with its tilt angle precisely matched to the tilt angle of the backrest 12, ensuring effective enhancement of the backrest 12's support. In this embodiment, the L-shaped reinforcing tube 3 has a rectangular ring-shaped cross-section. This shape has excellent bending and torsional resistance, better maintaining structural stability under external forces. Of course, its cross-section can also adopt other structures, such as circular or elliptical shapes.

[0026] Mounting slots and connecting plates: Reference Figures 2 to 4 As shown, the support 11 and the backrest 12 are respectively provided with mounting grooves 4 for installing the horizontal extension section 31 and the vertical extension section 32 of the L-shaped reinforcing tube 3. The shape and size of the mounting grooves 4 are precisely matched with the corresponding parts of the L-shaped reinforcing tube 3, and the depth and width have been strictly calculated to ensure that the L-shaped reinforcing tube 3 is installed stably without affecting the overall structural strength of the base 1. The connecting plate 6 provided at the rear of the backrest 12 is made of high-strength metal plate, and its shape and size are designed according to the structure of the backrest 12 and the fixing requirements. It has through holes that match the fixing bolts.

[0027] Connection methods of each component

[0028] Connection between the L-shaped reinforcing tube and the base: The horizontal extension 31 and the vertical extension 32 of the L-shaped reinforcing tube 3 are tightly embedded in the mounting grooves 4 of the support 11 and the backrest 12, respectively. During installation, first, accurately embed the horizontal extension 31 into the mounting groove 4 of the support 11 to ensure a tight fit; then, embed the vertical extension 32 into the mounting groove 4 of the backrest 12 and adjust the angle. Afterward, use mechanical connectors 5 for fixing. The mechanical connectors 5 are preferably high-strength bolts, but screws or rivets can also be used. The bolts pass sequentially from back to front through the mounting holes on the connecting plate 6 and the backrest 12, and then are screwed into the corresponding screw holes on the L-shaped reinforcing tube 3. Tighten with a special torque wrench according to the specified torque value to form a stable three-point reinforcing fixing structure, ensuring that the L-shaped reinforcing tube 3 and the base 1 are tightly connected as a whole.

[0029] Working principle

[0030] Principle of Enhanced Structural Strength: During vehicle operation, the base 1 is subjected to various external forces when encountering bumps, acceleration, deceleration, or collisions. The horizontal extension 31 of the L-shaped reinforcing tube 3 effectively resists impact forces from below the support 11, such as the inertial forces generated during vehicle acceleration or deceleration, preventing the support 11 from bending or deforming due to its own structural strength. The vertical extension 32 can withstand the pressure on the backrest 12, preventing excessive backward tilting or breakage of the backrest 12 when the vehicle encounters a rear-end collision or bump. The arc-shaped transition structure at the connection and the matching arc-shaped design of the mounting groove 4 ensure that stress is evenly distributed under load, avoiding stress concentration at the connection. For example, in a vehicle collision, the impact force is transmitted through the L-shaped reinforcing tube 3. The arc-shaped transition structure allows the stress to transition smoothly at the connection, preventing the L-shaped reinforcing tube 3 from breaking or the base 1 from damage due to stress concentration.

[0031] Multi-component collaborative working principle: Two L-shaped reinforcing tubes 3, arranged parallel to each other along the width of the base 1, can collaboratively withstand external forces from multiple positions when subjected to stress. When the vehicle is hit from the side, the two L-shaped reinforcing tubes 3 can jointly bear and disperse the impact force, greatly improving the protection for children compared to a single L-shaped reinforcing tube 3. The layout design of the mounting cavity 7 and the mounting groove 4 ensures the flatness and stability of the seat assembly 2 during installation. After the seat assembly 2 is installed in the mounting cavity 7, its weight is evenly distributed on the L-shaped reinforcing tubes 3 and the base 1. The design of the top surface of the L-shaped reinforcing tubes 3 being flush with or recessed from the bottom surface of the mounting cavity 7 further improves the load-bearing capacity and stability of the entire seat, providing children with a comfortable and safe riding experience.

[0032] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are merely 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. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A child safety seat, comprising a base (1) and a seat assembly (2) disposed on the base (1), the base (1) comprising a support (11) and a backrest (12), characterized in that: The base (1) is embedded with an L-shaped reinforcing tube (3) made of metal, the L-shaped reinforcing tube (3) including a horizontal extension section (31) and a vertical extension section (32); The horizontal extension section (31) extends along the support part (11), and the vertical extension section (32) extends from the end of the horizontal extension section (31) toward the backrest (12). Its extension direction is adapted to the connection structure between the support part (11) and the backrest (12) to improve the structural strength and impact resistance of the base (1).

2. The child safety seat according to claim 1, characterized in that: The vertical extension section (32) is inclined and the inclination angle of the vertical extension section (32) is adapted to the inclination angle of the backrest (12).

3. The child safety seat according to claim 1, characterized in that: The support (11) and the backrest (12) are respectively provided with mounting grooves (4). The horizontal extension (31) of the L-shaped reinforcing tube (3) is embedded in the mounting groove (4) of the support (11), and the vertical extension (32) is embedded in the mounting groove (4) of the backrest (12).

4. The child safety seat according to claim 3, characterized in that: The connection between the horizontal extension section (31) and the vertical extension section (32) has an arc-shaped transition structure, and the mounting groove (4) at the connection between the support part (11) and the backrest (12) also has a smooth transition arc-shaped structure, and the arc curvature radii of the two are matched.

5. The child safety seat according to claim 1, characterized in that: The L-shaped reinforcing tube (3) is fixed to the backrest (12) by a mechanical connector (5), which is at least one selected from bolts, screws or rivets.

6. The child safety seat according to claim 5, characterized in that: A connecting plate (6) is provided behind the backrest (12). The mechanical connector (5) passes through the connecting plate (6) and the backrest (12) from back to front and is then fixedly connected to the L-shaped reinforcing tube (3) to form a three-point reinforcing and fixing structure.

7. The child safety seat according to claim 1, characterized in that: The L-shaped reinforcing tube (3) has a closed ring structure in cross-section, and its cross-sectional shape includes any one of circular, elliptical, rectangular or rounded rectangle.

8. The child safety seat according to claim 1, characterized in that: The L-shaped reinforcing tube (3) is provided with at least two tubes, and each L-shaped reinforcing tube (3) is arranged in parallel at intervals along the width direction of the base (1).

9. The child safety seat according to claim 3, characterized in that: The base (1) has a support portion (11) with a top opening for mounting a cavity (7) for mounting a seat assembly (2). The mounting groove (4) is opened at the bottom of the mounting cavity (7). The top surface of the L-shaped reinforcing tube (3) after installation is flush with or sunken to the bottom surface of the mounting cavity (7).

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