Safety buckle for safety seats

Abstract

The utility model discloses a safety buckle for safety seat relates to safety seat accessory technology field, is used for car pet seat or child seat, and is used in cooperation with car safety belt, the safety buckle includes colloid and hardware, the colloid with the hardware integrated, and the hardware is located in the colloid, a plurality of first heat dissipation holes are seted up on the colloid, a plurality of second heat dissipation holes are seted up on the hardware, and the first heat dissipation hole with the second heat dissipation hole one to one corresponds, the upper portion of safety buckle is seted up with the string mouth, and the string mouth is used for wearing car safety belt, the lower portion of safety buckle is equipped with the connecting mouth, and the connecting mouth is used for being connected with car pet seat or child seat through connecting piece, and the string mouth with the connecting mouth center axis coincides. The utility model effectively solves the problem of traditional safety buckle material performance imbalance, easy to peel off, poor adaptability, improves use security and operation convenience, and adapts to industrialization batch manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of car seat accessories technology, specifically to a safety buckle for car pet seats or child seats. This safety buckle is used in conjunction with the car seat belt to fix the pet seat or child seat in the car, improving riding safety and ease of use. Background Technology

[0002] With the diversification of car travel scenarios, the use of car pet seats and child seats is becoming increasingly common. Their secure fastening to the car body relies on the cooperation of seat belts and safety buckles. Current technology for car pet seat or child seat safety buckles has the following shortcomings: Imbalance in material properties: Traditional safety buckles often use a single plastic material or a single metal material. The rigidity of the single plastic material is insufficient, and it is easy to deform under the tension of the seat belt for a long time, which affects the fixing effect. The hardness of the single metal material can easily cause bumps and injuries if pets or children come into contact with it accidentally. Risk of delamination due to thermal expansion and contraction: Although some safety buckles use a combination of plastic and metal, the connection between the two does not take into account the effect of temperature changes. The coefficients of thermal expansion and contraction of plastic and metal are quite different. After long-term use, the plastic and metal are prone to separation and delamination, which will cause the safety buckle to fail. Poor structural adaptability: The existing safety buckle structure design does not take into account the dual needs of "seat belt insertion" and "seat connection" - either the belt insertion hole size is unreasonable, causing the seat belt to get stuck; or the connection part with the seat does not have a dedicated structure, requiring additional complex connectors, making installation and disassembly inconvenient.

[0003] To address the aforementioned issues, there is an urgent need to design a safety buckle for car seats that combines flexibility and rigidity, resists thermal expansion and contraction leading to delamination, and has strong adaptability. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a safety buckle for a child safety seat, solving the following technical problems: How to balance the flexibility and rigidity of safety buckles to avoid impact damage while ensuring structural strength; How to mitigate the difference in thermal expansion and contraction between the internal plastic and the hardware of the safety buckle through structural design to prevent delamination; How to optimize the safety buckle structure to balance the ease of seatbelt installation with a stable connection to the seat.

[0005] The above-mentioned objectives of this utility model are achieved through the following technical means: A safety buckle for a car seat, used in a car pet seat or child seat, and used in conjunction with a car seat belt, the safety buckle includes a rubber body and a hardware component, the rubber body and the hardware component are integrally formed, and the hardware component is located in the rubber body; The colloid has a plurality of first heat dissipation holes, and the hardware has a plurality of second heat dissipation holes, with the first heat dissipation holes and the second heat dissipation holes corresponding one-to-one; The safety buckle has a strap-threading opening at its upper part, which is used to thread a car seat belt. The lower part of the safety buckle is provided with a connection port, which is used to connect to a car pet seat or child seat via a connector; The central axis of the serial port coincides with that of the connection port.

[0006] Optionally, the first heat dissipation hole and the second heat dissipation hole have the same shape, and both are one of the following: circular, square or elliptical.

[0007] Preferably, the number of the first heat dissipation hole and the number of the second heat dissipation hole are both 3-8.

[0008] Optionally, the colloid is one of PP colloid, ABS colloid, and TPU colloid.

[0009] Optionally, the hardware is one of stainless steel hardware, galvanized steel hardware, and aluminum alloy hardware.

[0010] Furthermore, the opening of the belt loop is provided with horn-shaped arched parts on both sides, and the arched parts are smoothly protruding into the opening; the top of the arched parts is reserved with a gap that matches the thickness of the seat belt to form a passage for the seat belt to pass through; the length and width of the inner side of the belt loop opening are matched with the width and thickness of the seat belt, and the opening of the belt loop opening, the edge of the gap, and the end of the arched parts are all made with arc transition.

[0011] Preferably, the connection port is a flat-lip type, the inner length and width of which are adapted to the width and thickness of the connector, and the connection port has an arc transition.

[0012] Preferably, the inner wall of the tape stringing port is provided with anti-slip protrusions, which are spaced apart along the length of the tape stringing port.

[0013] Preferably, a groove is provided on the inner side of the connector, and the shape of the groove is adapted to the shape of the connector to limit the displacement of the connector.

[0014] Preferably, the connector is one of a hook, a buckle, or a strap, and the connector has a first connecting end and a second connecting end, the first connecting end being connected to the connecting port.

[0015] The beneficial effects of adopting the above technical solution are as follows: This safety buckle uses a composite structure formed by integrating the colloid and hardware. The outer colloid provides a soft touch to prevent children / pets from bumping and getting hurt, while the embedded hardware acts as a load-bearing skeleton to ensure tensile strength, thus solving the problem of performance imbalance in traditional single materials. By using insert injection molding process combined with first and second heat dissipation holes of "3-8 in number, consistent in shape and aligned in position", the temperature difference between the colloid and the hardware can be reduced, and the stress of thermal expansion and contraction can be reduced. After a thermal cycle test of -30℃~80℃ (500 times), the risk of delamination is reduced by more than 95%, thus avoiding delamination failure. The upper stringing port has a bull horn-shaped arched part for the threading channel (adapted to the thick safety band and the curved edge transition) and has anti-slip protrusions on the inside. The lower flat lip-shaped connection port is adapted to the thick connector and has anti-displacement grooves on the inside. The central axes of the two coincide to unify the force line, improve the threading efficiency by 60%, and require no additional tools for installation and disassembly, taking into account both convenient operation and stable connection. Different colloids, hardware parts, and connectors can be selected as needed to adapt to diverse scenarios. The regular design of the heat dissipation holes is also suitable for industrial mass production, comprehensively solving the pain points of traditional safety buckles such as "material imbalance, easy delamination, and poor compatibility", and achieving the core goals of "reliable fixation, safe use, and convenient operation". Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the safety buckle structure for a child safety seat; Figure 2 This is an exploded view of the safety buckle structure for a child safety seat.

[0017] Among them, colloid 1; hardware 2; first heat dissipation hole 3; second heat dissipation hole 4; tape stringing port 5; arched part 51; through channel 52; and connection port 6. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1. Figure 1-2 A safety buckle for a car seat is shown, which is used in conjunction with a car seat belt for pet seats or child seats. The safety buckle includes a rubber body 1 and a hardware component 2. The rubber body 1 and the hardware component 2 are integrally formed, and the hardware component 2 is located inside the rubber body 1. The colloid 1 has a plurality of first heat dissipation holes 3 and the hardware 2 has a plurality of second heat dissipation holes 4, with the first heat dissipation holes 3 and the second heat dissipation holes 4 corresponding one-to-one. The upper part of the safety buckle has a strap-threading opening 5, which is used to thread a car seat belt. The lower part of the safety buckle is provided with a connection port 6, which is used to connect to a car pet seat or child seat through a connector; The central axis of the serial port coincides with that of the connection port.

[0020] Example 1 addresses three core issues in the safety buckle technology—material performance imbalance, risk of delamination due to thermal expansion and contraction, and poor structural adaptability—through a structural solution of "integrated molding of colloid and hardware + precise design of core functional holes." The specific solution logic and effects are as follows: I. Solving the problem of "material performance imbalance" The use of insert injection molding technology achieves the integrated molding of the colloid 1 and the hardware 2, allowing the hardware (such as a sheet structure with a thickness of 2-3mm) to serve as the core load-bearing skeleton, providing a tensile strength of ≥450MPa. This ensures that the hardware remains undeformed under the instantaneous tension of the seatbelt, solving the problem of insufficient rigidity of a single plastic material. Simultaneously, the colloid completely encapsulates the hardware, while the outer layer provides a soft touch, preventing bumps and injuries from accidental contact by children or pets, thus compensating for the safety shortcomings of a single hardware material. Ultimately, this achieves the dual characteristics of "rigid support + soft protection," ensuring effective fixation while reducing safety risks during use.

[0021] II. Solving the problem of "risk of delamination due to thermal expansion and contraction" The tight bonding of the insert injection molding process: After the hardware is precisely positioned, molten colloid is injected, forming a gapless connection between the colloid and the hardware through "mechanical interlocking + molecular bonding," significantly improving the interfacial bonding strength and reducing the separation space caused by thermal expansion and contraction. The first heat dissipation hole 3 of colloid 1 and the second heat dissipation hole 4 of hardware 2 have the same diameter of 3-8mm and are completely aligned, forming heat dissipation holes that can quickly dissipate local heat generated by temperature changes, reducing the temperature difference between the colloid and the hardware and mitigating the interfacial stress caused by thermal expansion and contraction differences. Experimental results: After a thermal cycling test of -30℃ to 80℃ (500 times), there were no cracks or loosening at the bonding area, reducing the risk of delamination by more than 95% and preventing the safety buckle from failing due to delamination.

[0022] III. Solving the problem of "poor structural adaptability" A seatbelt insertion port 5 is centrally located at the top of the seatbelt, with an opening width matching the width of the car seatbelt (50mm), ensuring no compression or jamming during installation. A connection port 6 is located at the bottom of the seatbelt, serving as a dedicated connection structure for the seat connectors (hooks, buckles, etc.), requiring no additional accessories. Simultaneously, the center axes of the insertion port and the connection port coincide, ensuring that the seatbelt tension and seat connection force are transmitted along the same line of force, guaranteeing structural stability and simplifying the installation process (no need to adjust hole alignment). Ultimately, this design balances "smooth seatbelt installation" and "convenient seat connection," improving installation efficiency by 60%, and requiring no additional tools for installation and removal, solving the problems of poor adaptability and cumbersome operation associated with traditional structures.

[0023] Example 1, through its ingenious structural design, comprehensively solves the three major defects of existing safety buckles, ultimately achieving the goals of "reliable fixation, safe use, and convenient operation," and adapting to the actual usage needs of car pet seats and child seats.

[0024] Example 2. This example illustrates the shape selection of the first heat dissipation hole and the second heat dissipation hole. The first heat dissipation hole 3 and the second heat dissipation hole 4 have the same shape and are both circular (e.g., ...). Figure 1-2 (as shown), one of the shapes: square or oval.

[0025] Circular heat dissipation holes: They combine safety and structural durability. The curved surface eliminates stress concentration points, preventing the colloid from cracking. The smooth hole walls also prevent children / pets from bumping into or getting caught on them. Square ventilation holes: improve heat dissipation efficiency, with a larger heat dissipation area for the same hole diameter, suitable for scenarios with high heat dissipation requirements such as high temperature exposure in summer, and prevent the colloid from softening at high temperatures; Oval ventilation holes: adaptable to narrow areas of safety buckles (such as the edge of the tape port / connection port), and achieve heat dissipation in limited space by flexible long and short axis dimensions, while taking into account space utilization.

[0026] Example 3. This example illustrates the selection of the number of the first and second heat dissipation holes. The number of both the first heat dissipation hole 3 and the second heat dissipation hole 4 is 3-8. For example, selecting... Figure 1-2 The seven heat dissipation holes shown.

[0027] The number of holes can be adjusted according to the size of the child / pet seat safety buckle (e.g., 3-5 holes for small safety buckles, 6-8 holes for large safety buckles), eliminating the need to redesign the hole layout and accommodating the needs of different safety buckle sizes. Both the first and second ventilation holes have 3-8 holes, effectively mitigating the stress of thermal expansion and contraction between the adhesive and hardware to prevent delamination, without weakening the structural strength of the safety buckle. This also allows for compatibility with different sized safety buckles and ensures production compatibility.

[0028] Example 4. This example illustrates the selection of materials for the colloid. The colloid 1 is one of PP colloid, ABS colloid, and TPU colloid.

[0029] PP colloid: It has good weather resistance, is lightweight and low in toxicity; it is suitable for changes in temperature and humidity inside the car, avoids the risk of toxicity when children / pets come into contact with it, and provides basic soft protection. When used with hardware, it meets the structural stability requirements under the tension of a regular seat belt.

[0030] ABS gel: strong impact resistance and moderate rigidity; can withstand the impact of pets or children's collisions, reduce gel cracking, and enhance the overall resistance of the safety buckle to the tensile force of the seat belt, suitable for scenarios with slightly higher requirements for structural strength.

[0031] TPU colloid: Excellent elasticity and abrasion resistance; higher softness, significantly reducing the risk of accidental bumps and knocks from children / pets, and is wear-resistant and durable, resisting friction wear during long-term use and extending the lifespan of the safety buckle.

[0032] All three types of colloids can be used with hardware to achieve the core requirements of "soft protection + rigid support", which not only avoids bumps and injuries, but also ensures that the safety buckle does not deform under tensile strength. At the same time, they are suitable for various use environments in cars, meeting the safety and practical requirements of child / pet seats.

[0033] Example 5. This example illustrates the material selection for the five hardware components. The hardware component 2 is one of stainless steel hardware, galvanized steel hardware, or aluminum alloy hardware.

[0034] Stainless steel hardware: corrosion resistant and high tensile strength; suitable for humid environments inside cars (such as moisture brought in by rain) and not easy to rust, and can stably withstand the tension of seat belts, preventing the safety buckle from deforming and failing due to stress, ensuring long-term stability.

[0035] Galvanized steel hardware: The galvanized layer is rust-proof and moderately priced; the galvanized layer isolates moisture and prevents corrosion, balancing safety and economy, meeting the tensile strength requirements of regular child / pet seats, and suitable for mass consumer scenarios.

[0036] Aluminum alloy hardware: lightweight and with a certain tensile strength; reduces the overall weight of the safety buckle, making it easy to install and remove, while providing basic rigid support. Combined with the rubber, it ensures structural stability under seat belt tension, making it suitable for weight-sensitive seating scenarios.

[0037] All three types of hardware can serve as the core load-bearing skeleton of the safety buckle, providing rigid support to resist the tension of the seat belt and prevent the safety buckle from deforming. At the same time, their respective characteristics (corrosion resistance, economy, and lightweight) make them suitable for different usage scenarios. Together with the colloid, they solve the problem of "material performance imbalance" and ensure the safety and practicality of the safety buckle.

[0038] Example 6. This example illustrates how the strap opening adapts to the installation of a seatbelt. For example... Figure 1-2 As shown, the opening of the strap-string port 5 is provided with horn-shaped arched parts 51 on both sides, and the arched parts protrude smoothly from the inside of the opening; the top of the arched parts is reserved with a gap adapted to the thickness of the seat belt to form a seat belt passage 52; the length and width of the opening of the strap-string port 5 are adapted to the width and thickness of the seat belt, and the opening of the strap-string port 5, the edge of the gap, and the end of the arched parts are all made with arc transition.

[0039] Seatbelt installation process: Align the car seatbelt with the belt loop at the top of the buckle, and insert it through the horn-shaped arched section on both sides of the belt loop opening. Because the gap in the channel is compatible with the thickness of the seatbelt, and the length and width of the belt loop are compatible with the thickness of the seatbelt, the seatbelt can pass through smoothly. The curved transition design of the opening, gap edges and the end of the arched section prevents jamming or obstruction during installation.

[0040] In this embodiment, the suitable size and smooth channel design allow the seat belt to be inserted without compression or jamming, improving operational efficiency; the curved transition avoids scratching the seat belt or causing contact injury to children / pets; after insertion, the seat belt fits snugly into the channel, making it less prone to shifting under force, ensuring the secure fit between the safety buckle and the seat belt.

[0041] Example 7. This example illustrates how the connector can be adapted to fit the child safety seat connector. For example... Figure 1-2 As shown, the connection port 6 is a flat-lipped connection port, and the inner length and width of the flat-lipped connection port are adapted to the width and thickness of the connector. The connection port has an arc transition.

[0042] Example of using a car seat with a safety buckle: Align the first connecting end of the compatible connector (hook, buckle, or strap) with the flat lip-shaped connector at the bottom of the safety buckle; because the inner length and width of the connector match the width and thickness of the connector, the first connecting end of the connector can be smoothly inserted or snapped into the connector, and the arc transition design of the connector avoids jamming or scratching of the connector during installation, thus completing the connection with the safety buckle.

[0043] In this embodiment, the flat-lipped connector is size-matched to the connector, eliminating obstruction caused by size deviation and improving installation and disassembly efficiency; the curved transition prevents the connector from being scratched during installation and also prevents children / pets from accidentally touching the edge of the connector and causing bumps; the flat-lipped structure can form a tight fit with the connector, reducing loosening of the connector and ensuring the fixation effect of the seat after it is secured by the safety buckle and seat belt, preventing the connector from shifting during use.

[0044] Example 8. This example illustrates an anti-slip measure for the tape stringing port. (Not shown in the figure), the inner wall of the tape stringing port 5 is provided with anti-slip protrusions, which are spaced apart along the length of the tape stringing port.

[0045] The anti-slip protrusions on the inner wall of the seat belt loop are spaced apart along the length. These protrusions increase the friction between the seat belt and the loop, preventing the seat belt from slipping inside the loop due to bumps while the car is in motion, thus ensuring the stability of the seat buckle on the seat. The spaced arrangement does not obstruct the installation of the seat belt, thus balancing anti-slip function with ease of installation.

[0046] Example 9. This example shows a groove for adapting to a car seat connector, not shown in the figure. The inner side of the connector 6 is provided with a groove, the shape of which is adapted to the shape of the connector to limit the displacement of the connector.

[0047] A groove adapted to the shape of the connector is opened on the inside of the connection port. The groove can physically limit the connector's displacement within the connection port (such as swaying left and right or moving up and down), preventing the connector from loosening and causing the seat to fail to stay in place during long-term use, and further improving the stability of the connection between the safety buckle and the seat.

[0048] Example 10. This example shows a connector adapted to the connection port. Not shown in the figure, the connector is one of a hook, buckle, or strap, and the connector has a first connecting end that connects to the connection port 6.

[0049] The connectors can be hooks, buckles, or straps (the first connecting end connects to the connector port), which can be adapted to different car pet seats / child seats (such as hooks for seats with hanging rings, buckles for seats with slots), without the need for additional customized connectors, thus lowering the barrier to entry; at the same time, all three types of connectors are easy to disassemble and install, taking into account both scenario compatibility and ease of operation.

[0050] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A safety buckle for a safety seat for a pet or a child in a car, which is used in cooperation with a safety belt of a car, characterized in that, The safety buckle includes a colloid and a hardware component, wherein the colloid and the hardware component are integrally formed, and the hardware component is located within the colloid. The colloid has a plurality of first heat dissipation holes, and the hardware has a plurality of second heat dissipation holes, with the first heat dissipation holes and the second heat dissipation holes corresponding one-to-one; The safety buckle has a strap-threading opening at its upper part, which is used to thread a car seat belt. The lower part of the safety buckle is provided with a connection port, which is used to connect to a car pet seat or child seat via a connector; The central axis of the serial port coincides with that of the connection port.

2. The safety buckle for safety seats according to claim 1, characterized in that, The first heat dissipation hole and the second heat dissipation hole have the same shape, and both are one of the following: circular, square or elliptical.

3. The safety buckle for a child safety seat according to claim 1, characterized in that, The number of the first heat dissipation hole and the second heat dissipation hole is 3-8 each.

4. The safety buckle for safety seats according to claim 1, wherein The colloid is one of PP colloid, ABS colloid, and TPU colloid.

5. The safety buckle for safety seats according to claim 1, wherein The hardware is one of stainless steel hardware, galvanized steel hardware, and aluminum alloy hardware.

6. The safety buckle for safety seats according to claim 1, wherein The opening of the belt loop is provided with horn-shaped arched parts on both sides, which smoothly protrude from the inside of the opening; the top of the arched parts is reserved with a gap adapted to the thickness of the seat belt to form a passage for the seat belt to pass through; the length and width of the inside of the belt loop opening are adapted to the width and thickness of the seat belt, and the opening of the belt loop opening, the edge of the gap, and the end of the arched parts are all made with arc transition.

7. The safety buckle for a child safety seat according to claim 1, characterized in that, The connection port is a flat-lip type, and the inner length and width of the flat-lip type are adapted to the width and thickness of the connector. The connection port has an arc transition.

8. The safety buckle for safety seats according to claim 1, wherein The inner wall of the tape stringing port is provided with anti-slip protrusions, which are spaced apart along the length of the tape stringing port.

9. The safety buckle for safety seats according to claim 1, wherein The inner side of the connector has a groove, the shape of which is adapted to the shape of the connector to limit the displacement of the connector.

10. The safety buckle for safety seats according to claim 1, wherein The connector is one of a hook, a buckle, or a strap, and the connector has a first connecting end that is connected to the connecting port.

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