High-stability enhanced child safety seat supporting leg connecting system

Abstract

The utility model discloses a high-stability enhanced child safety seat supporting leg connecting system which comprises a base formed in a blow molding mode, a solid enhanced body, a metal connecting base, supporting legs, a rotating shaft and a limiting shaft. The metal connecting base comprises a base and a plurality of connecting lugs which are located on the front side of the base, extend forwards and are vertically arranged at intervals. The screw penetrates through the base and is fixed with the solid reinforcement body after passing through the blow molding cavity positioned in the base, and the base is clamped by the base and the solid reinforcement body; two slots corresponding to the connecting lugs are formed in the rear end of the folding seat; the connecting lugs are inserted into the slots, and the rotating shafts penetrate through the folding bases and the connecting lugs to achieve hinge joint of the supporting legs. The limiting shaft penetrates through the folding base and the connecting lug and is located on the rear side of the rotating shaft, and an arc-shaped groove matched with the limiting shaft is formed in the lower portion of the rear end of the folding base; and when the folding seat rotates around the rotating shaft to the position where the arc-shaped groove is downwards embedded into the limiting shaft, the supporting legs are limited at the supporting unfolding position.

Description

Technical Field

[0001] The utility model relates to the technical field of children's car safety seats, in particular to a high-stability enhanced children's safety seat support leg connection system. Background Art

[0002] As an indispensable children's protection device in modern means of transportation, the design and functionality of children's car safety seats are directly related to the safety of children during rides. In the prior art, children's car safety seats are usually equipped with support leg structures to enhance the stability of the seats and prevent tipping. However, the designs of these support leg structures often have some defects, especially in the connection method between the support legs and the base.

[0003] Specifically, the patent in patent document CN117465312A describes a base assembly that realizes the linkage between the support feet and the sliding member through gears and racks.

[0004] On the other hand, patent document AU2022365392A1 discloses a base assembly with a sliding element and support legs, and the support legs can be deployed and folded as the sliding element expands and contracts.

[0005] In some existing designs of children's car safety seats, the support legs are directly arranged on the sliding members that can slide. First, the connection stability between the sliding member and the base is poor. Since the support legs are connected to the seat through the sliding members, any movement or displacement of the sliding members may cause changes in the position or angle of the support legs, which may weaken the overall stability of the seat. In case of emergencies such as collisions or sudden brakes, this unstable connection may cause the support legs to fail to provide the expected support, thus affecting the safety of children.

[0006] Secondly, the tensile strength of the sliding members and support leg structures in the prior art is relatively low. When the seat is impacted by a large force, such as a vehicle collision, these components may not be able to withstand enough force and are prone to breakage or deformation, which will seriously reduce the safety performance of the seat.

[0007] It can be seen that due to the limitations of the stability and tensile strength of the support legs in the prior art, the overall safety performance of children's car safety seats cannot be fully guaranteed. This not only increases the concerns of parents and manufacturers about the safety of the seats, but also limits the applicability of the seats in different vehicle models and usage environments. Summary of the Utility Model

[0008] The technical problem to be solved by the utility model is to provide a high-stability enhanced children's safety seat support leg connection system with better stability, stronger tensile property and better safety performance.

[0009] The technical solution adopted by the present utility model to solve the above technical problems is: a highly stable enhanced child safety seat support leg connection system, including a blow-molded base, a solid reinforcing body, a metal connection seat, a support leg, a rotating shaft and a limiting shaft;

[0010] A recessed position is provided on the upper surface of the base, and the solid reinforcing body is arranged in the recessed position;

[0011] The metal connection seat includes a base and a plurality of connecting ears that extend forward and are vertically spaced from each other on the front side of the base;

[0012] The base is located below the base, and a screw passes through the base, passes through the blow-molded cavity of the base and is fixed to the solid reinforcing body, and the base is clamped by the base and the solid reinforcing body;

[0013] The support leg includes a folding seat on the upper side, and a semi-frame-shaped mounting portion with an open front side and a lower side is provided at the front end of the base, and the rear end of the folding seat is located in the mounting portion;

[0014] Two slots corresponding to the connecting ears are provided at the rear end of the folding seat; the connecting ears are inserted into the slots and the rotating shaft passes through the folding seat and the connecting ears to realize the hinge connection of the support leg;

[0015] The limiting shaft passes through the folding seat and the connecting ear and is located behind the rotating shaft, and an arc-shaped groove matching the limiting shaft is provided at the lower part of the rear end of the folding seat;

[0016] When the folding seat rotates around the rotating shaft to a position where the arc-shaped groove engages the limiting shaft downward, the support leg is limited in the support deployment position.

[0017] A preferred technical solution adopted by the present utility model to solve the above technical problems is: a support portion is provided at the bottom of the base, the support portion includes two spaced support walls, a support groove is formed between the two support walls, the metal connection seat is arranged in the support groove, and the two side walls of the metal connection seat are tightly abutted by the support walls.

[0018] A preferred technical solution adopted by the present utility model to solve the above technical problems is: the solid reinforcing body is made of nylon material; the upper surface of the solid reinforcing body is flush with the upper surface of the base to form a continuous surface.

[0019] A preferred technical solution adopted by the present utility model to solve the above technical problems is: the solid reinforcing body includes a main part and a convex part located below the main part, an annular step edge is formed between the convex part and the main part, an annular resting step is provided in the recessed position, the convex part is inserted into the area enclosed by the annular resting step, and the annular resting step and the annular step edge are in contact with each other.

[0020] The preferred technical solution adopted by the present utility model to solve the above technical problems is that the bottom wall of the base on the upper side of the installation part bulges compared with the bottom wall of the base at the support part, thereby forming a receiving space higher than the bottom surface height of the base at the docking part of the metal connection seat;

[0021] Part of the connecting ear extends upward beyond the docking surface of the metal connection seat, and the rear end of the folding seat is located within the receiving space;

[0022] The rear end of the folding seat is in the shape of an arc surface from the upper side to the rear side, and the outer contour of the connecting ear is in a corresponding arc structure;

[0023] When the support leg is in the support deployment position, the rear end of the folding seat is limited by the bottom wall of the base on the upper side of the installation part, so that the support leg cannot be folded outwards.

[0024] The preferred technical solution adopted by the present utility model to solve the above technical problems is that the folding seat includes a seat side wall, the seat side wall extends downward and exceeds the bottom wall of the folding seat, and a plurality of reinforcing walls parallel to and spaced from the seat side wall are provided at the bottom of the folding seat, and the rotating shaft passes through the seat side wall and the reinforcing walls.

[0025] The preferred technical solution adopted by the present utility model to solve the above technical problems is that a plurality of positioning grooves are provided on the side of the folding seat, and elastic positioning protrusions are provided on the corresponding inner side wall of the installation part, and the positioning grooves and the elastic positioning protrusions cooperate.

[0026] The preferred technical solution adopted by the present utility model to solve the above technical problems is that a metal threaded ring column is injection-molded through an insert in the solid reinforcing body, and the screw is connected in cooperation with the metal threaded ring column;

[0027] The folding seat is made of plastic material, and the folding seat and the metal connection seat are integrally formed by insert injection molding.

[0028] The preferred technical solution adopted by the present utility model to solve the above technical problems is: a high-stability enhanced child safety seat support leg connection system,

[0029] including a base formed by blow molding, a solid reinforcing body, a metal connection seat, a support leg, a rotating shaft and a limiting shaft;

[0030] A recessed position is provided on the upper surface of the base, and the solid reinforcing body is arranged in the recessed position;

[0031] The metal connection seat includes a base and a plurality of connecting ears that extend forward and are vertically spaced from each other in front of the base;

[0032] The base is located below the pedestal. Screws pass through the base, pass through the blow-molding cavity of the pedestal, and are fixed to the solid reinforcing body, and the pedestal is clamped by the base and the solid reinforcing body;

[0033] The support leg includes a folding seat on the upper side. The front end of the pedestal is provided with a semi-frame-shaped mounting portion with openings on the front side and the lower side, and the rear end of the folding seat is located within the mounting portion;

[0034] The rear end of the folding seat is provided with two slots corresponding to the connecting ears; the connecting ears are inserted into the slots, and the rotating shaft passes through the folding seat and the connecting ears to realize the hinging of the support leg;

[0035] The limiting shaft passes through the folding seat and the connecting ears and is located behind the rotating shaft. An arc-shaped groove matching the limiting shaft is provided at the lower part of the rear end of the folding seat;

[0036] A plurality of positioning grooves are provided on the side of the folding seat, and elastic positioning protrusions are provided on the corresponding inner walls of the mounting portion, and the positioning grooves and the elastic positioning protrusions cooperate;

[0037] When the folding seat rotates around the rotating shaft to a position where the arc-shaped groove is downwardly engaged with the limiting shaft, the elastic positioning protrusion enters the positioning groove, and the bottom wall of the pedestal on the upper side of the mounting portion presses against the upper surface of the folding seat, and the support leg is limited in the support deployment position.

[0038] The preferred technical solution adopted by the present invention to solve the above technical problems is: the rear end of the folding seat is a circular arc surface from the upper side to the rear side, and the outer contour of the connecting ear is a corresponding circular arc structure;

[0039] The folding seat includes seat side walls, the seat side walls extend downward and exceed the bottom wall of the folding seat. A plurality of reinforcing walls parallel to and spaced from the seat side walls are provided at the bottom of the folding seat, and the rotating shaft passes through the seat side walls and the reinforcing walls.

[0040] Compared with the prior art, the advantages of the present invention are:

[0041] First, through the engagement of the connecting ears with the slots at the rear end of the folding seat, a mechanical interlocking structure is formed. Through the above design of multiple composite connections, each component can be more stably fixed in a predetermined position, reducing errors during the assembly process and deformation during use. Moreover, this structure can disperse the force in multiple directions, thereby significantly improving the strength of the overall structure, ensuring the tight fit of the connection part, reducing the possibility of loosening at the connection, making the connection more firm and reliable, and avoiding unstable factors caused by excessive gaps.

[0042] Second, the solid reinforcement provides a position for the metal connection seat to be firmly connected. Moreover, by being embedded in the blow-molded base, the strength of the seat itself is increased and its load-bearing capacity is improved.

[0043] Third, the rotating shaft and the limiting shaft connect the folding seat and the metal connection seat in series, further improving the integrity of the structure, making it have stronger tensile strength, firmer connection, and stronger safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0045] Figure 1 Schematic diagram of the unfolded support legs of the child safety seat in the preferred embodiment;

[0046] Figure 2 Schematic diagram of the folded support legs of the child safety seat in the preferred embodiment;

[0047] Figure 3 Schematic diagram of the connection system of the support legs of the high-stability enhanced child safety seat Figure 1 ;

[0048] Figure 4 Schematic diagram of the connection system of the support legs of the high-stability enhanced child safety seat Figure 2 ;

[0049] Figure 5 Exploded view of the connection system of the support legs of the high-stability enhanced child safety seat;

[0050] Figure 6 Enlarged view of the base of the child safety seat in the preferred embodiment;

[0051] Figure 7 Schematic diagram of the solid reinforcement of the child safety seat in the preferred embodiment;

[0052] Figure 8 Schematic diagram of the connection between the support legs and the metal connection seat of the child safety seat in the preferred embodiment;

[0053] Figure 9 Exploded view of the connection between the support legs and the metal connection seat of the child safety seat in the preferred embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0054] The preferred embodiments of the present utility model will be described in detail below 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 utility model.

[0055] It should be noted that similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it will not be further defined and explained in subsequent drawings.

[0056] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. The terms "first" and "second" are only for descriptive convenience and have no other directional meaning, and should not be construed as a limitation of the present utility model.

[0057] As Figure 8 、 9 shown, this embodiment provides a high-stability enhanced child safety seat support leg 4 connection system, including a base 1, a solid reinforcement 2, a metal connection seat 3, a support leg 4, a rotating shaft 5, and a limiting shaft 6.

[0058] As Figure 3 shown, the base 1 is formed by blow molding, and a recess 7 is provided on its upper surface, in which a solid reinforcement 2 is arranged. The function of the solid reinforcement 2 is not only to provide a position for the metal connection seat 3 to be firmly connected, but also to increase the strength of the seat itself and improve the load-bearing capacity by being embedded in the blow-molded base 1.

[0059] As Figure 3-4 、9 shown, the metal connection seat 3 includes a base 31 and a plurality of connection ears 32 that extend forward and are vertically spaced from each other on the front side of the base 31. The base 31 is located below the base 1, and screws pass through the base 31, pass through the blow molding cavity of the base 1, and are fixed to the solid reinforcement 2. The base 1 is clamped by the base 31 and the solid reinforcement 2. The design of the metal connection seat 3 provides a more stable and firm connection method. The fixing method of the screws passing through the base 31 and the solid reinforcement 2 ensures the tight fit between the support leg 4 and the base 1, and improves the stability of the overall structure.

[0060] As Figure 5 、 9As shown, the support leg 4 includes a folding seat 41 on the upper side and a support leg body 42. The support leg body 42 is inserted into the folding seat 41 and fixed with fasteners. The front end of the base 1 is provided with a semi-frame-shaped mounting portion 8 that is open at the front side and the lower side. The rear end of the folding seat 41 is located within the mounting portion 8.

[0061] As Figure 8-9 shown, the rear end of the folding seat 41 is provided with two slots 9 corresponding to the connecting ears 32. The connecting ears 32 are inserted into the slots 9 and the rotating shaft 5 passes through the folding seat 41 and the connecting ears 32 to achieve the hinging of the support leg 4. The limiting shaft 6 passes through the folding seat 41 and the connecting ears 32 and is located at the rear side of the rotating shaft 5. An arc-shaped groove p matching the limiting shaft 6 is provided at the lower part of the rear end of the folding seat 41.

[0062] As Figure 8-9 shown, by the engagement of the connecting ears 32 with the slots 9 at the rear end of the folding seat 41, a mechanical interlocking structure is formed. Through the design of the above multi-compound connections, each component can be fixed more stably in the predetermined position, reducing the errors during the assembly process and the deformation during use. Moreover, this structure can disperse the force in multiple directions, thus significantly improving the strength of the overall structure, ensuring the tight fit of the connection part, reducing the possibility of loosening at the connection, and making the connection more firm and reliable. In addition, due to the one-to-one cooperation of multiple connecting ears 32 and multiple slots 9, the assembly gap between the folding seat 41 and the metal connecting seat 3 can be effectively controlled, achieving lateral limitation and avoiding the unstable factors caused by excessive gap.

[0063] The rotating shaft 5 and the limiting shaft 6 in series connect the folding seat 41 and the metal connecting seat 3 with two axes, further improving the integrity of the structure, making it have stronger tensile capacity, more firm connection and stronger safety.

[0064] Preferably, the folding seat 41 is made of plastic material. The multi-layer composite of the two materials also fully utilizes the different characteristics of the materials, making the connection part take into account both rigidity and toughness and realizing the gain of connection performance.

[0065] The support leg 4 realizes the flexible unfolding and stable positioning of the support leg 4 through the hinging of the folding seat 41 and the connecting ears 32, and the cooperation of the rotating shaft 5 and the limiting shaft 6. As Figure 1 shown, when the folding seat 41 rotates around the rotating shaft 5 to the position where the arc-shaped groove is downwardly engaged with the limiting shaft 6, the support leg 4 is limited in the support unfolded position. As Figure 2 shown, when the support leg 4 is folded, it is limited in the storage groove under the base.

[0066] The hinge mechanism allows the support leg 4 to maintain smooth movement when unfolding and folding, and the cooperation between the limit shaft 6 and the arc-shaped groove ensures the accurate positioning of the support leg 4 in the unfolded position, preventing the support leg 4 from excessive movement or swinging in the horizontal direction, and avoiding accidental folding of the support leg 4.

[0067] Preferably, a metal threaded ring column is insert-molded in the solid reinforcement body 2, and the screw is cooperatively connected with the metal threaded ring column.

[0068] Due to the hardness and wear resistance of the metal threaded collar, it can reduce wear and maintain the integrity and functionality of the thread during long-term use. This makes the threaded connection more durable during repeated use and extends the service life of the product. Since the metal threaded collar and the screw are both made of metal and have a high hardness, it is not easy for the thread to be pulled or damaged during the tightening and loosening process, which can effectively avoid connection failure caused by thread damage.

[0069] In this embodiment, the metal insert injection molding technology enables a firm combination between the metal threaded ring column and the plastic matrix, which is more stable than simple embedding. In addition, the addition of the metal threaded ring column improves the structural strength of the entire solid reinforcement body 2. The addition of metal material can withstand a greater load, making the entire assembly more stable when subjected to external forces, and reducing structural damage caused by insufficient material strength.

[0070] Preferably, the solid reinforcement 2 is made of nylon. The upper surface of the solid reinforcement 2 is flush with the upper surface of the base 1 to form a continuous surface. Nylon is an engineering plastic with excellent mechanical strength and toughness. This property enables the solid reinforcement 2 to withstand large loads and impacts without being prone to breakage or deformation. In addition, the design of the continuous surface simplifies the cleaning process because there are no gaps or grooves where dust or dirt can accumulate.

[0071] like Figure 5-7 As shown, the solid reinforcement body 2 includes a main part 21 and a convex part 22 located below the main part 21, an annular step edge 9 is formed between the convex part 22 and the main part 21, and an annular resting step 10 is provided at the recessed position 7. The convex part 22 is inserted into the enclosed area of ​​the annular resting step 10, and the annular resting step 10 and the annular step edge 9 are in conflict. Furthermore, the solid reinforcement body 2 has a non-circular structure.

[0072] The design of the annular step edge 9 and the annular resting step 10 provides a clear assembly guide, so that the protrusion can be accurately inserted into the predetermined position, simplifying the assembly process. Moreover, the physical interlocking method enhances the connection stability between the solid reinforcement body 2 and the surrounding structure. First, the close fit between the protrusion and the annular resting step 10 increases the contact area of ​​the connection area, thereby improving the strength and reliability of the connection. Second, the interlocking relationship between the protrusion and the annular resting step 10 can absorb and disperse the energy generated by external impact or vibration to a certain extent, thereby playing a shock-absorbing role. Third, the design of the annular resting step 10 can effectively prevent the protrusion from being misplaced or shifted when subjected to external force, thereby ensuring the stability of the structure. Fourth, the mutual interference between the annular step edge 9 and the annular resting step 10 forms a solid torsion-resistant structure that can resist torsion from different directions and improve the rigidity of the overall structure.

[0073] like Figure 5 , 8 As shown in Figure 9, the bottom wall of the base 1 on the upper side of the mounting portion 8 is raised higher than the bottom wall of the base 1 at the supporting portion, thereby forming an accommodation space that is higher than the bottom surface of the base 1 at the joint of the metal connecting seat 3. The connecting ear 32 partly extends upward beyond the joint surface of the metal connecting seat 3, and the rear end of the folding seat 41 is located in the accommodation space.

[0074] The rear end of the folding seat 41 is an arc surface from the upper side to the rear side, and the outer contour of the connecting ear 32 is a corresponding arc structure. When the support leg 4 is in the supporting and unfolding position, the rear end of the folding seat 41 is limited by the bottom wall of the base 1 on the upper side of the mounting portion 8, so that the support leg 4 cannot be folded outward.

[0075] The bottom wall's pressing and limiting function ensures that the support leg 4 is fixed in the unfolded state, avoiding folding due to accidental touch or external force, and improving safety in use. The arc structure is set so that the upper reference surface of the connection changes less during the rotation process, and the appropriate assembly distance with the bottom wall of the base 1 on the upper side of the mounting portion 8 is maintained as much as possible, so that it can achieve pressing and limiting while rotating smoothly.

[0076] Preferably, if Figure 8-9 As shown, the side of the folding seat 41 is provided with a plurality of positioning grooves 11, and the corresponding inner wall of the mounting portion 8 is provided with elastic positioning protrusions, and the positioning grooves 11 and the elastic positioning protrusions cooperate to further stabilize the support leg 4 in the unfolded position and the folded position. It should be noted that the positioning grooves 11 and the elastic positioning protrusions cooperate to further strengthen the connection between the support leg 4 and the seat. The elastic characteristics of the elastic positioning protrusions can absorb and disperse the impact force during use to a certain extent, reducing damage to the folding seat 41 and the mounting portion 8.

[0077] like Figure 4As shown, the folding seat 41 includes a seat side wall 12 that extends downward and exceeds the bottom wall of the folding seat 41. A number of reinforcing walls 13 that are parallel to and spaced apart from the seat side wall 12 are provided at the bottom of the folding seat 41. The rotating shaft 5 passes through the seat side wall 12 and the reinforcing walls 13. The seat side wall 12 extending downward beyond the bottom wall forms an additional support structure, which, together with the reinforcing walls 13 at the bottom, significantly improves the overall strength of the folding seat 41. The reinforcing walls 13 are parallel to and spaced apart from the seat side wall 12, increasing the rigidity of the bottom of the folding seat 41 while reducing the weight of the structure. The design of the reinforcing walls 13 helps to reduce material deformation caused by uneven stress or heavy pressure, maintaining the shape and function of the folding seat 41. The rotating shaft 5 passing through the seat side wall 12 and the reinforcing walls 13 ensures the fixation and support of the rotating shaft 5, providing a smooth and reliable rotating mechanism. The entire structure enables the folding seat 41 to support a greater weight and is suitable for a wider range of usage scenarios.

[0078] As Figure 4 shown, a support portion is provided at the bottom of the base 1. The support portion includes two spaced-apart support walls 14. A support groove is formed between the two support walls 14. The metal connection seat 3 is disposed in the support groove, and the two side walls of the metal connection seat 3 are tightly abutted by the support walls 14. The two support walls 14 of the support portion provide a firm bottom support for the base 1, reducing the risk of loosening during use and increasing the strength, stability, and safety of the seat. The support groove provides precise positioning for the metal connection seat 3, ensuring the accurate position of the metal connection seat 3 in the base 1 and helping to improve the assembly accuracy.

[0079] Preferably, as Figure 4 shown, the base 31 includes a flat plate wall 311 and two bent walls 312 that are folded downward on both sides. The bent walls 312 slope downward from back to front to form a triangular support structure. The front side of the bent wall 312 extends beyond the flat plate wall 311 and extends upward to form a connecting ear 32. The inclined design of the bent wall 312 provides additional support points for the base, helping to disperse the force and reduce the deformation of the base. The triangular support structure of the bent wall 312 and the design of the connecting ear 32 improve the load-bearing capacity of the base, enabling it to support a heavier load.

[0080] An introduction is made to a high-stability enhanced child safety seat support leg connection system provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. High stability enhanced child safety seat support leg connection system, characterized by: It includes a blow-molded base, a solid reinforcement body, a metal connecting seat, a supporting leg, a rotating shaft and a limiting shaft; The upper surface of the base is provided with a recessed position, and the solid reinforcement body is arranged in the recessed position; The metal connecting base comprises a base and a plurality of connecting ears located on the front side of the base and extending forward and spaced apart from each other vertically; The base is located below the pedestal, the screw passes through the base, passes through the blow-molded cavity located at the base, and is fixed to the solid reinforcement body, and the base is clamped by the base and the solid reinforcement body; The support leg comprises a folding seat on the upper side, the front end of the base is provided with a semi-frame type mounting portion with open front and lower sides, and the rear end of the folding seat is located in the mounting portion; The rear end of the folding seat is provided with two narrow slots corresponding to the connecting ears; the connecting ears are inserted into the narrow slots and the rotating shaft passes through the folding seat and the connecting ears to realize the hinge connection of the supporting legs; The limiting shaft passes through the folding seat and the connecting ear and is located at the rear side of the rotating shaft, and the lower part of the rear end of the folding seat is provided with an arc-shaped groove matching the limiting shaft; When the folding seat rotates around the rotating shaft to a position where the arc-shaped groove downwardly engages with the limiting shaft, the supporting leg is limited in the supporting and unfolding position.

2. The high stability enhanced child safety seat support leg connection system according to claim 1, characterized in that: A supporting portion is provided at the bottom of the base, and the supporting portion includes two supporting walls spaced apart from each other, a supporting groove is formed between the two supporting walls, the metal connecting seat is provided in the supporting groove, and the two side walls of the metal connecting seat are tightly pressed against by the supporting walls.

3. The high stability enhanced child safety seat support leg connection system according to claim 1, characterized in that: The solid reinforcement body is made of nylon; the upper surface of the solid reinforcement body is flush with the upper surface of the base to form a continuous surface.

4. The high stability enhanced child safety seat support leg connection system according to claim 3, characterized in that: The solid reinforcement body includes a main part and a convex part located below the main part, an annular step edge is formed between the convex part and the main part, an annular resting step is provided at the recessed position, the convex part is inserted into the enclosed area of ​​the annular resting step, and the annular resting step and the annular step edge are in conflict with each other.

5. The high stability enhanced child safety seat support leg connection system according to claim 1, characterized in that: The bottom wall of the base on the upper side of the mounting portion is raised higher than the bottom wall of the base at the supporting portion, thereby forming a receiving space higher than the bottom surface height of the base at the joint of the metal connecting seat; The portion of the connecting ear extends upward beyond the butt joint surface of the metal connecting seat, and the rear end of the folding seat is located in the accommodating space; The rear end of the folding seat is an arc surface from the upper side to the rear side, and the outer contour of the connecting ear is a corresponding arc structure; When the supporting leg is in the supporting unfolded position, the rear end of the folding seat is limited by the bottom wall of the base on the upper side of the mounting portion, so that the supporting leg cannot be folded outward.

6. The high stability enhanced child safety seat support leg connection system according to claim 1, characterized in that: The folding seat comprises a seat side wall, which extends downward and exceeds the bottom wall of the folding seat. The bottom of the folding seat is provided with a plurality of reinforcing walls which are parallel to the seat side wall and spaced apart. The rotating shaft passes through the seat side wall and the reinforcing wall.

7. The high stability enhanced child safety seat support leg connection system according to claim 1, characterized in that: The side of the folding seat is provided with a plurality of positioning grooves, and the corresponding inner side wall of the mounting portion is provided with an elastic positioning protrusion, and the positioning grooves and the elastic positioning protrusions cooperate with each other.

8. The high stability enhanced child safety seat support leg connection system according to claim 3, characterized in that: A metal threaded ring column is injection-molded in the solid reinforcement body through an insert, and the screw is connected with the metal threaded ring column in a cooperative manner; The folding seat is made of plastic material, and the folding seat and the metal connecting seat are integrally formed by insert injection molding.

9. High stability enhanced child safety seat support leg connection system, characterized by: It includes a blow-molded base, a solid reinforcement body, a metal connecting seat, a supporting leg, a rotating shaft and a limiting shaft; The upper surface of the base is provided with a recessed position, and the solid reinforcement body is arranged in the recessed position; The metal connecting base comprises a base and a plurality of connecting ears located on the front side of the base and extending forward and spaced apart from each other vertically; The base is located below the pedestal, the screw passes through the base, passes through the blow-molded cavity located at the base, and is fixed to the solid reinforcement body, and the base is clamped by the base and the solid reinforcement body; The support leg comprises a folding seat on the upper side, the front end of the base is provided with a semi-frame type mounting portion with open front and lower sides, and the rear end of the folding seat is located in the mounting portion; The rear end of the folding seat is provided with two narrow slots corresponding to the connecting ears; the connecting ears are inserted into the narrow slots and the rotating shaft passes through the folding seat and the connecting ears to realize the hinge connection of the supporting legs; The limiting shaft passes through the folding seat and the connecting ear and is located at the rear side of the rotating shaft, and the lower part of the rear end of the folding seat is provided with an arc-shaped groove matching the limiting shaft; The side of the folding seat is provided with a plurality of positioning grooves, and the corresponding inner wall of the mounting portion is provided with elastic positioning protrusions, and the positioning grooves and the elastic positioning protrusions cooperate with each other; When the folding seat rotates around the rotating axis to the position where the arc-shaped groove downwardly engages the limiting axis, the elastic positioning protrusion enters the positioning groove, the bottom wall of the base on the upper side of the mounting portion presses the upper surface of the folding seat, and the supporting leg is limited in the supporting and unfolding position.

10. The high stability enhanced child safety seat support leg connection system according to claim 1, characterized in that: The rear end of the folding seat is an arc surface from the upper side to the rear side, and the outer contour of the connecting ear is a corresponding arc structure; The folding seat comprises a seat side wall, which extends downward and exceeds the bottom wall of the folding seat. The bottom of the folding seat is provided with a plurality of reinforcing walls which are parallel to the seat side wall and spaced apart. The rotating shaft passes through the seat side wall and the reinforcing wall.

Images