Four-point type child safety seat constraint system and child safety seat

Abstract

The utility model discloses a four-point type child safety seat constraint system and a child safety seat, the child safety seat comprises a seat body; the seat body comprises a base frame, a first lower clamping groove and a second lower clamping groove are formed in the left side and the right side of the base frame respectively; the chair back assembly comprises a central back middle support body, and a first back wing and a second back wing which are bilaterally symmetrical; the headrest assembly is composed of a headrest middle part, a first headrest wing and a second headrest wing, the first headrest wing and the second headrest wing extend downwards, and a first fixing clamping groove and a second fixing clamping groove are formed in the lower end of the first headrest wing and the lower end of the second headrest wing respectively. The armrest assembly comprises a left-side first armrest and a right-side second armrest, and a first upper clamping groove and a second upper clamping groove are formed in the upper sides of the armrest assembly respectively; no matter an underage child uses a safety bandage protector of the safety seat or an older child directly uses an automobile safety belt, the fixing mode of the automobile safety belt to the safety seat is always kept consistent, and parents do not need to frequently adjust the binding path according to the growth stage of the child.

Description

Technical Field

[0001] This utility model relates to a child safety seat, and more particularly to a four-point child safety seat restraint system, specifically referring to the binding structure of a car seat belt to a child safety seat. Background Technology

[0002] A child restraint system (CRS) is a car occupant restraint device designed for children of different ages (or weight ranges). By scientifically adapting to the vehicle's seat structure and seat belt system, it significantly improves the safety of infants and preschool children while traveling in a car. This type of product is typically fixed in the rear seat position of the vehicle and requires a three-point seat belt for reliable anchoring.

[0003] Regarding the child safety seat belt system described in utility model patent CN221437819U, it innovatively adopts a dual-guide mechanism design: the first guide component guides the shoulder strap portion of the car seat belt, while the second guide component controls the direction of the belly strap. For example... Figure 2 As shown, when used for young children (e.g., 0-3 years old), the seat body is secured in a six-point configuration using special straps; and Figure 3 The demonstration of the usage mode for older children (e.g., 3-12 years old) uses a standard car seatbelt for three-point restraint of the occupants. While this tiered restraint mechanism can meet the protection needs of children at different developmental stages, it places high demands on parents' adherence to proper operating procedures.

[0004] It is worth noting that child restraint system manufacturers must provide product designs with a standardized seatbelt anchoring path. This regulation aims to eliminate user confusion caused by differences in restraint methods, reduce the risk of misuse through standardized interface design, and improve product cross-vehicle compatibility and user-friendliness. This technological evolution trend indicates that future child safety seat development will focus more on functional integration and operational simplification, providing systematic solutions to meet the diverse needs of families. Utility Model Content

[0005] The technical problem this invention aims to solve is to provide a four-point child safety seat restraint system with the same seatbelt binding path for both young and older children. By using a standardized seatbelt binding path, it achieves stable restraint for children of different ages, while simplifying the operation process and improving user-friendliness and safety.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: a four-point child safety seat restraint system, including a seat body and a car seat belt connection device;

[0007] The seat body is composed of the following modular components:

[0008] The base frame has a first lower locking slot and a second lower locking slot on its left and right sides, respectively.

[0009] The chair back assembly includes a central back support and two symmetrical back wings on the left and right sides;

[0010] The headrest assembly consists of a middle part of the pillow and a first pillow wing and a second pillow wing extending downwards, and the lower ends of the first pillow wing and the second pillow wing are respectively provided with a first fixing groove and a second fixing groove;

[0011] The handrail assembly includes a first handrail on the left and a second handrail on the right, with a first upper locking groove and a second upper locking groove respectively provided on the upper side of each handrail.

[0012] The vehicle seatbelt connection device achieves four-way anchoring through the following path:

[0013] Upward constraint path:

[0014] The car seat belt starts from the connection point on the vehicle and passes through the longitudinal gap between the inner side of the first back wing and the first headrest wing, enters the first fixing slot and forms an angle to fit the inner side of the middle of the back wing, and is guided by the second upper positioning slot.

[0015] Downlink constraint path:

[0016] The main body of the seat belt passes through the first lower locking groove and the second lower locking groove, converges to the central fixed buckle, and closes through the buckle device.

[0017] A further preferred embodiment of this utility model is: the first lower locking groove is formed between the first armrest and the base frame, and the second lower locking groove is formed between the second armrest and the base frame.

[0018] A further preferred embodiment of this utility model is: the first upper locking groove is formed between the first armrest and the first back wing, and the second upper locking groove is formed between the second armrest and the second back wing.

[0019] A further preferred embodiment of this utility model is as follows: a first fixing member or a second fixing member is installed on the lower side of the first or second pillow wing. The first or second fixing member is formed by bending a metal strip and has an inlet / outlet and a limiting arm.

[0020] A further preferred embodiment of this utility model is that the headrest assembly is height-adjustable.

[0021] Another preferred subject of this utility model: a child safety seat, comprising a seat body; the seat body is composed of the following modular components:

[0022] The base frame has a first lower locking slot and a second lower locking slot on its left and right sides, respectively.

[0023] The chair back assembly includes a central back support and two symmetrical back wings on the left and right sides;

[0024] The headrest assembly consists of a middle part of the pillow and a first pillow wing and a second pillow wing extending downwards, and the lower ends of the first pillow wing and the second pillow wing are respectively provided with a first fixing groove and a second fixing groove;

[0025] The handrail assembly includes a first handrail on the left and a second handrail on the right, with a first upper locking groove and a second upper locking groove respectively on the upper side.

[0026] A further preferred embodiment of this utility model is: the first lower locking groove is formed between the first armrest and the base frame, and the second lower locking groove is formed between the second armrest and the base frame.

[0027] A further preferred embodiment of this utility model is: the first upper locking groove is formed between the first armrest and the first back wing, and the second upper locking groove is formed between the second armrest and the second back wing.

[0028] A further preferred embodiment of this utility model is as follows: a first fixing member or a second fixing member is installed on the lower side of the first or second pillow wing. The first or second fixing member is formed by bending a metal strip and has an inlet / outlet and a limiting arm.

[0029] A further preferred embodiment of this utility model is that the headrest assembly is height-adjustable.

[0030] Compared with existing technologies, the advantages of this invention are: This technical solution, through a unique four-point restraint system for car seats, provides a unified seatbelt securing path for children of different ages. Whether younger children use the safety harness provided with the car seat or older children use the car seatbelt directly, the way the car seatbelt secures the car seat remains consistent, eliminating the need for parents to frequently adjust the securing path according to the child's growth stage. This design greatly simplifies the operation process, reduces safety hazards caused by improper operation, and significantly improves the product's user-friendliness and ease of use.

[0031] This technical solution employs a modular structure, breaking down the seat body into key modules such as the base frame, backrest assembly, headrest assembly, and armrest assembly. Each module is meticulously designed with specific functions and structural features. For example, the lower locking slot of the base frame, the back wing design of the backrest assembly, the fixing slot of the headrest assembly, and the upper locking slot of the armrest assembly together form a stable yet flexible safety restraint system. This modular approach not only enhances the overall structural stability of the seat but also improves its adaptability to different car models and children's body types, extends the product's lifespan, and facilitates production, assembly, and maintenance.

[0032] This technical solution, through an innovative seatbelt guiding and securing mechanism, ensures that the car seatbelt remains in the correct and secure position throughout use. The upward restraint path utilizes the gap between the back wing and headrest wing, and the securing slot, to guide the seatbelt to fit snugly against the child's body, providing a stable upper body restraint. The downward restraint path, through the lower locking slot and central locking buckle, ensures the seatbelt is securely fixed to the bottom of the seat. This not only optimizes the seatbelt path but also, through the synergistic action of the restraining arms and securing slots, prevents the seatbelt from loosening or shifting during use, thus providing comprehensive safety protection for children, meeting the requirements of the latest EU safety regulations, and demonstrating significant safety advantages. Attached Figure Description

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0034] Figure 1 It is a four-point restraint child safety seat;

[0035] Figure 2 Diagram of seatbelt restraint path Figure 1 ;

[0036] Figure 3 This is a diagram illustrating the seating position of a younger child.

[0037] Figure 4 Diagram of seatbelt restraint path Figure 2 ;

[0038] Figure 5 This is a diagram illustrating the seating position of an older child. Detailed Implementation

[0039] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0040] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0041] like Figure 1 As shown, the child safety seat of this utility model is secured to the car seat through an innovative four-point child safety seat restraint system 100, providing a stable and safe riding environment for children. This four-point child safety seat restraint system 100 consists of a seat body 101 and a car seat belt connection device 102. The seat body 101 adopts a modular design and includes the following key components:

[0042] The base frame 10 serves as the basic structure of the entire safety seat. The left and right sides of the base frame 10 are respectively provided with a first lower locking groove 11 and a second lower locking groove 12, which are used to guide and fix the downward restraint path of the car seat belt to ensure the stability of the seat on the vehicle seat.

[0043] The backrest assembly 20 is one of the core components of the car seat, comprising a central back support 21 and symmetrical first and second back wings 22 and 23. This design not only enhances the structural stability of the seat but also provides excellent back support for children, ensuring a comfortable ride.

[0044] In addition, the headrest assembly 30 consists of a central part 31 and a first pillow wing 32 and a second pillow wing 33 extending downwards, which can provide additional protection for the child's head. The lower ends of the first pillow wing 32 and the second pillow wing 33 are respectively provided with a first fixing groove 34 and a second fixing groove, which are used to guide and fix the upward restraint path of the car seat belt, ensuring that the seat belt is in the correct position on the child's body.

[0045] The armrest assembly 40 includes a first armrest 41 on the left and a second armrest 42 on the right, with a first upper locking groove 43 and a second upper locking groove 44 respectively on their upper sides. The armrest assembly 40 not only provides additional support for children, but also assists in guiding the direction of the seat belt through the design of the locking grooves, further optimizing the fixing path of the seat belt.

[0046] The car seatbelt connector 102 achieves four-way anchoring through the following path to ensure the stability of the child safety seat during vehicle movement:

[0047] Upward restraint path: The vehicle seat belt s originates from the connection point s0 on the vehicle, passes through the longitudinal gap f between the inner side of the first back wing 22 and the first headrest wing 32, and enters the first fixing slot 34. At this point, the seat belt forms a specific inclination and fits snugly against the inner side of the back wing, then is guided through the second upper locking slot 44. This path design ensures that the seat belt properly restrains the child's upper body while avoiding unnecessary pressure on the child.

[0048] Downward restraint path: The vehicle seat belt s continues to extend along the first lower locking groove 11 and the second lower locking groove 12, eventually converging at the central fixing buckle v and closing via the buckle device 50. This design not only ensures the seat belt's secureness but also distributes the force through multi-point fixation, further improving the stability of the child safety seat.

[0049] The core innovation of this technical solution lies in addressing the operational complexity and user inconvenience associated with existing child safety seats. In traditional technology, the securing method of a safety seat needs frequent adjustments as the child grows. For example, for younger infants, the safety seat's built-in harnesses are typically used for restraint, requiring the car's seatbelt to avoid these harnesses and form a specific securing path. However, as children grow older, they no longer need the safety seat's harnesses and are directly restrained by the car's seatbelt, necessitating a readjustment of the seatbelt's securing path. This design, requiring constant adjustments based on age, is not only cumbersome but also lacks clear adjustment standards (such as age, height, or weight), leading to user errors and potentially causing safety hazards.

[0050] To address these issues, this invention proposes an innovative four-point child safety seat restraint system. This system provides a stable and consistent safety restraint method for children of different ages through a standardized seatbelt anchoring path. Regardless of the child's developmental stage, parents can use the same anchoring path to secure the safety seat, greatly simplifying the operation process, reducing the risk of misuse, and improving the product's user-friendliness.

[0051] Furthermore, this design fully considers regulatory requirements and market demands. It fully complies with regulations on standardized seatbelt mounting paths, not only meeting the requirements of standardized interface design but also enhancing the product's cross-vehicle adaptability and market competitiveness through functional integration and operational simplification. Therefore, this invention is not only technologically innovative but also demonstrates significant advantages in user experience and regulatory compliance, possessing broad market application prospects.

[0052] More specifically, the first lower locking slot 11 is located between the first armrest 41 and the base frame 10, while the second lower locking slot 12 is located between the second armrest 42 and the base frame 10. This design cleverly utilizes the space between the armrest assembly and the base frame, forming a natural guiding and fixing channel. When the seat belt passes through these two locking slots along the downward restraint path, it effectively guides the direction of the seat belt and ensures its secure fixation at the bottom of the seat. This structure not only enhances the restraint of the seat belt but also avoids the risk of seat belt displacement or loosening during use through precise slot setting and fit.

[0053] The first upper locking slot 43 is located between the first armrest 41 and the first back wing 22, while the second upper locking slot 44 is located between the second armrest 42 and the second back wing 23. The placement of these two slots is also based on the gaps between the modular components, providing precise guidance for the upward restraint path of the vehicle's seatbelt. As the seatbelt originates from the connection point on the vehicle, travels along the longitudinal gap between the back wing and the headrest wing, and enters the locking slot, the upper locking slots ensure the correct alignment of the seatbelt in the upper part of the seat, allowing it to fit snugly against the child's body, thus providing a stable upper body restraint. This design not only optimizes the seatbelt path but also enhances the overall structural stability and reliability through the synergistic effect between the modular components.

[0054] On the underside of the first headrest wing 32 or the second headrest wing 33, we install the first fastener 61 or the second fastener 62. These fasteners are made of bent metal strips and have unique structural features: one end has an inlet / outlet g for guiding the seat belt into the fastening slot; the other end is equipped with a limiting arm c to prevent the seat belt from coming out of the slot during use. This design cleverly combines the strength and elasticity of the metal material, ensuring smooth insertion and secure locking of the seat belt during the fastening process.

[0055] When the seatbelt s enters the first fixing slot 34 through the inlet / outlet g, the limiting arm c automatically locks the seatbelt, preventing it from loosening due to bumps or external forces during vehicle movement. This fixing mechanism not only improves the reliability of the seatbelt's fixation but also avoids the operational inconvenience or malfunction risks that may arise from complex locking devices through its simple mechanical structure. During use, the user simply needs to correctly insert the seatbelt into the inlet / outlet g to easily complete the fixing, greatly enhancing the convenience of operation and the user experience.

[0056] Preferably, the headrest assembly 30 in this invention is height-adjustable. The height-adjustable headrest assembly 30 can be flexibly adjusted according to the child's height changes. As the child grows, parents can easily adjust the height of the headrest through simple operations, ensuring that the headrest always provides optimal support and protection for the child's head. This design not only accommodates the height differences of children of different ages but also avoids potential safety hazards caused by an unsuitable headrest position, such as excessive forward or backward tilting of the head.

[0057] In actual use, such as Figure 2 and Figure 3 As shown, when the child is young, the safety harness on the child safety seat should be used. However, as the child grows older, ... Figure 4 and Figure 5 As shown, the seatbelt on the child safety seat can be removed, and the car's seatbelt can be used directly. Whether the child is young or old, the binding path of the car seatbelt to the child safety seat remains unchanged when using this child safety seat restraint system, meaning there is no need to adjust the seatbelt binding method. This technical solution meets the needs of children of different ages while significantly improving the user experience, reducing the difficulty of operation, and truly achieving the convenience of "one-time binding, long-term use".

[0058] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0059] This invention introduces the four-point child safety seat restraint system and the child safety seat provided by this utility model. Specific examples are used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A four-point child safety seat restraint system, characterized in that: It includes a seat body and a vehicle seat belt connection device; wherein, the seat body is composed of the following modular components: The base frame has a first lower locking slot and a second lower locking slot on its left and right sides, respectively. The chair back assembly includes a central back support and two symmetrical back wings on the left and right sides; The headrest assembly consists of a middle part of the pillow and a first pillow wing and a second pillow wing extending downwards, and the lower ends of the first pillow wing and the second pillow wing are respectively provided with a first fixing groove and a second fixing groove; The handrail assembly includes a first handrail on the left and a second handrail on the right, with a first upper locking groove and a second upper locking groove respectively provided on the upper side of each handrail. The vehicle seatbelt connection device achieves four-way anchoring through the following path: Upward constraint path: The car seat belt starts from the connection point on the vehicle, passes through the longitudinal gap between the inner side of the first back wing and the first headrest wing, enters the first fixing slot and forms an angle to fit the inner side of the middle of the back wing, and is guided by the second upper positioning slot. Downlink constraint path: The main body of the seat belt passes through the first lower locking groove and the second lower locking groove, converges to the central fixed buckle, and closes through the buckle device.

2. The four-point child safety seat restraint system according to claim 1, characterized in that: The first lower locking groove is formed between the first armrest and the base frame, and the second lower locking groove is formed between the second armrest and the base frame.

3. The four-point child safety seat restraint system according to claim 1, characterized in that: The first upper locking groove is formed between the first armrest and the first back wing, and the second upper locking groove is formed between the second armrest and the second back wing.

4. The four-point child safety seat restraint system according to claim 1, characterized in that: A first or second fixing member is installed on the lower side of the first or second pillow wing. The first or second fixing member is formed by bending a metal strip and has an inlet / outlet and a limiting arm.

5. The four-point child safety seat restraint system according to claim 1, characterized in that: The headrest assembly is height-adjustable.

6. A child safety seat, characterized in that: Including the seat body; The seat body is composed of the following modular components: The base frame has a first lower locking slot and a second lower locking slot on its left and right sides, respectively. The chair back assembly includes a central back support and two symmetrical back wings on the left and right sides; The headrest assembly consists of a middle part of the pillow and a first pillow wing and a second pillow wing extending downwards, and the lower ends of the first pillow wing and the second pillow wing are respectively provided with a first fixing groove and a second fixing groove; The handrail assembly includes a first handrail on the left and a second handrail on the right, with a first upper locking groove and a second upper locking groove respectively on the upper side.

7. The child safety seat according to claim 6, characterized in that: The first lower locking groove is formed between the first armrest and the base frame, and the second lower locking groove is formed between the second armrest and the base frame.

8. The child safety seat according to claim 6, characterized in that: The first upper locking groove is formed between the first armrest and the first back wing, and the second upper locking groove is formed between the second armrest and the second back wing.

9. The child safety seat according to claim 6, characterized in that: A first or second fixing member is installed on the lower side of the first or second pillow wing. The first or second fixing member is formed by bending a metal strip and has an inlet / outlet and a limiting arm.

10. The child safety seat according to claim 6, characterized in that: The headrest assembly is height-adjustable.

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