Buckle adjusting system and safety seat

Abstract

The invention discloses a buckle adjusting system and a safety seat, the buckle adjusting system comprises a base, an adjuster, an adjusting belt and a safety buckle, the adjuster is slidably arranged on the base, the first end of the adjusting belt is fixedly connected with the base on the inner side of the base, and the second end of the adjusting belt is suitable for penetrating through the adjuster and is connected with the safety buckle on the outer side of the base; the adjuster is suitable for sliding along the base so as to change the initial position where the second end of the adjusting belt extends out of the outer side of the base and is matched with the base to limit the length, exposed out of the outer side of the base, of the second end of the adjusting belt, the safety buckle has the advantages that the position and height of the safety buckle can be adjusted, and the fixing requirements of the body types of children at different growth stages can be met.

Description

Technical Field

[0001] This application relates to the technical field of child safety seats, and particularly to a buckle adjustment system and a child safety seat. Background Art

[0002] A child safety seat is designed for children of different weights (or age groups), installed in a car, and can effectively improve the safety of children when riding. It is also called a child seat. The child safety seat itself is provided with a seat belt for restraining the child sitting on the seat. The seat belt on the child safety seat is generally of a five-point structure. A safety buckle is provided under the child safety seat for connecting with other seat belts. As part of the five-point seat belt, the closer the safety buckle is to the child, the better the restraining effect on the child and the higher the safety.

[0003] However, the existing safety buckles have the following defects: The common safety buckles are of a fixed structure. Since the safety buckles are within the sitting range of the child, if the safety buckles are arranged too close to the backrest, the space between the safety buckles and the backrest is too small, making it difficult to adapt to the comfort of older children. If the safety buckles are arranged too far from the backrest, the space between the safety buckles and the backrest is too large, making it difficult to effectively restrain young children, thereby greatly reducing the safety. Summary of the Invention

[0004] An object of this application is to provide a buckle adjustment system and a child safety seat in which the position and height of the safety buckle are adjustable.

[0005] To achieve the above object, the technical solution adopted in this application is: A buckle adjustment system includes a base, a regulator, an adjustment belt, and a safety buckle. The regulator is slidably arranged on the base. The first end of the adjustment belt is fixedly connected to the base inside the base. The second end of the adjustment belt is adapted to pass through the regulator and is connected to the safety buckle outside the base. The regulator is adapted to slide along the base to change the starting position of the second end of the adjustment belt extending outside the base, and cooperate with the base to limit the length of the second end of the adjustment belt exposed outside the base.

[0006] In some embodiments, the regulator is adapted to slide along a first direction. A plurality of limiting parts are arranged on the base along the first direction. The first end of the adjustment belt is connected to the base on one side of the limiting part along the first direction. The regulator includes a gear lever. The gear lever is in contact and cooperation with the adjustment belt. The gear lever is adapted to move along the first direction to adjust the length of the adjustment belt from the first end to the regulator. The gear lever is adapted to cooperate and fix with different limiting parts to limit the relative sliding of the regulator and the base.

[0007] In some embodiments, an elastic reset device is provided on the regulator. The elastic reset device is located on the side of the gear lever away from the base. The elastic reset device is adapted to move the gear lever closer to the base in the second direction and cooperate with the limiting portion for fixation. The limiting portion is a groove structure and is adapted to engage at least part of the gear lever to limit the movement of the gear lever in the first direction.

[0008] In some embodiments, the limiting portions are arranged in a single row on the base in the first direction; the limiting portions are arranged at equal intervals; the limiting portions are arranged near the central axis position of the base in the first direction.

[0009] In some embodiments, the limiting portions are arranged in multiple rows on the base in the first direction; the number of the limiting portions is an even number, and the limiting portions are symmetrically arranged on both sides of the central axis of the base in the first direction; the limiting portions in each row are arranged at equal intervals.

[0010] In some embodiments, the cross-section of the gear lever is circular. The second end of the adjusting belt passes by the gear lever on the side of the gear lever away from the first end of the adjusting belt, and then extends outwards from the base to form a starting position. The gear lever is adapted to form a bending structure between the first end and the second end of the adjusting belt. The number of the elastic reset devices is an even number, and the elastic reset members are symmetrically arranged on both sides of the central axis of the base in the first direction. An adjusting seat is provided on the regulator, and the elastic reset device is arranged in the adjusting seat. The adjusting seat is provided with a movable opening in the second direction. The gear lever passes through the adjusting seat along the movable opening and is connected with the elastic reset device in a matching manner.

[0011] In some embodiments, the regulator extends towards both sides in the first direction to form adjusting plates. A through opening is formed between the two adjusting plates on both sides. The second end of the adjusting belt is adapted to extend out from the through opening to the outside of the base and be connected with the safety buckle. An adjusting opening for the adjusting belt to pass through is provided on the base, and the adjusting plate is adapted to always cover the adjusting opening when the regulator slides.

[0012] In some embodiments, the number of the through openings is two, and the two through openings are symmetrically distributed on both sides of the central axis of the regulator in the first direction. The two ends of the adjusting belt form a first end, and the middle part of the adjusting belt forms a second end. The two ends of the adjusting belt are adapted to respectively pass through the through openings and enter the base and be connected inside the base.

[0013] In some embodiments, a guiding hook is provided on the safety buckle. The hooked side of the guiding hook faces the adjusting belt, and the guiding hook is adapted to connect and limit an external safety belt.

[0014] A safety seat includes the buckle adjustment system described in any one of the above. The adjuster is adapted to slide in a first direction, which is the front-back direction of the safety seat, and the first end of the adjustment belt extends closer to the outside of the safety seat than the starting position of the second end of the adjustment belt extending outside the base.

[0015] In some embodiments, a guiding hook is provided on the safety buckle. The guiding hook is adapted to cooperate with and hook a three-point seat belt to form a four-point fixing structure. An operation opening is provided on the safety seat. The adjuster extends to both sides in the first direction to form adjustment plates. A through opening is formed between the two adjustment plates on both sides. When the adjustment plates slide with the adjuster, the adjustment opening is always exposed within the operation opening, and the adjustment plates are adapted to always cover the operation opening when sliding with the adjuster.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: The buckle adjustment system and the safety seat of the present application solve the pain points that the position of the safety buckle in current child safety seats cannot be adjusted or the adjustment is inconvenient by optimizing the structure of the safety buckle. The front-back position of the optimized safety buckle can be adjusted in multiple gears, and during the adjustment process, the height position of the buckle can also be automatically adjusted together, greatly improving the comfort and safety of children during riding, enabling it to be applicable to children of all age groups, and being more economical and convenient compared to the buckle systems currently available on the market that are only applicable to a certain age group. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic use diagram when applied to a safety seat according to a preferred embodiment of the present application.

[0018] Figure 2 is a structural cross-sectional view when applied to a safety seat according to a preferred embodiment of the present application.

[0019] Figure 3 is an exploded structural view according to a preferred embodiment of the present application.

[0020] Figure 4 is a schematic state diagram at the lowest gear according to a preferred embodiment of the present application.

[0021] Figure 5 is a schematic state diagram at the second gear according to a preferred embodiment of the present application.

[0022] Figure 6 is a schematic state diagram at the third gear according to a preferred embodiment of the present application.

[0023] Figure 7 is a schematic state diagram at the highest gear according to a preferred embodiment of the present application.

[0024] Figure 8 It is the first overall structural view when the limiting part according to another preferred embodiment of the present application is a single row.

[0025] Figure 9 It is the second overall structural view when the limiting part according to another preferred embodiment of the present application is a single row.

[0026] Figure 10 It is the first exploded structural view when the limiting part according to another preferred embodiment of the present application is a single row.

[0027] Figure 11 It is the second exploded structural view when the limiting part according to another preferred embodiment of the present application is a single row.

[0028] Figure 12 It is the sectional structural view when the limiting part according to another preferred embodiment of the present application is a single row.

[0029] Figure 13 It is the schematic connection diagram of the adjusting belt according to still another preferred embodiment of the present application.

[0030] Figure 14 It is the schematic connection diagram of the adjusting belt according to yet another preferred embodiment of the present application.

[0031] Figure 15 It is the schematic cooperation diagram with an automotive seat belt according to a preferred embodiment of the present application.

[0032] In the figure: 1. Base; 11. Limiting part; 12. Adjusting opening; 2. Regulator; 21. Gear lever; 22. Elastic reset device; 23. Adjusting seat; 231. Moving opening; 24. Adjusting plate; 25. Passing opening; 3. Adjusting belt; 4. Safety buckle; 41. Guide hook; 5. Safety seat; 51. Operation opening. Detailed implementation manners

[0033] Next, in combination with the detailed implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0034] In the description of the present application, it should be noted that for orientation terms, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence.

[0036] The terms "comprising" and "having" in the description and claims of the present application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0037] The following further describes the present application with reference to the drawings: As Figures 1 to 15 shown, the present application provides a buckle adjustment system, including a base 1, a regulator 2, an adjustment belt 3, and a safety buckle 4. The regulator 2 is slidably disposed on the base 1. The first end of the adjustment belt 3 is fixedly connected to the base 1 inside the base 1, which can not only hide the first end of the adjustment belt 3 and improve the aesthetics, but also enhance the connection strength of the first end of the adjustment belt 3 through the base 1. The second end of the adjustment belt 3 is adapted to pass through the regulator 2 and is connected to the safety buckle 4 outside the base 1. The regulator 2 is adapted to slide along the base 1 to change the starting position of the second end of the adjustment belt 3 extending outside the base 1, and cooperate with the base 1 to limit the length of the second end of the adjustment belt 3 exposed outside the base 1.

[0038] It can be understood that the inner side and the outer side of the base 1 refer to when the buckle adjustment system is arranged on an object such as a safety seat 5, the part hidden inside the object is the inner side, and the part exposed outside the object is the outer side. It can also be understood that the side with the safety buckle 4 is the outer side, and the side without the safety buckle 4 is the inner side.

[0039] By controlling the sliding of the adjuster 2, the starting position where the second end of the adjusting belt 3 extends to the outside of the base 1 can be changed, which is linked to the change in the length of the second end of the adjusting belt 3 exposed to the outside of the base 1, so that sufficient space can be formed between the safety buckle 4 and the seat to accommodate children of different body shapes, thereby improving the applicability, comfort and safety of the safety buckle 4.

[0040] like Figures 2 to 7 In the shown embodiment, the adjuster 2 is suitable for sliding along the first direction, but if the adjuster 2 is to be locked after sliding to prevent it from being pulled and displaced by the adjusting belt 3, a locking structure needs to be added. The present application provides a plurality of limit portions 11 along the first direction on the base 1, and the first end of the adjusting belt 3 is connected to the base 1 on one side of the limit portion 11 along the first direction. The adjuster 2 includes a shift lever 21, which is in contact with and cooperates with the adjusting belt 3. The shift lever 21 is suitable for moving along the first direction to adjust the length of the adjusting belt 3 from the first end to the adjuster 2. The shift lever 21 is suitable for being fixed with different limit portions 11 to limit the relative sliding of the adjuster 2 and the base 1.

[0041] As the shift lever 21 slides along the first direction with the adjuster 2, it can pass through the limit portions 11 at different positions in sequence. When the shift lever 21 is controlled to combine with the limit portion 11 at the current position, the corresponding position can be fixed. It can be understood that each limit portion 11 arranged along the first direction can be regarded as a gear. By configuring the intervals between adjacent limit portions 11 in the first direction, the adjustment amplitude of a single gear can be controlled. In the present application, at least three or four gears can be set to reduce the adjustment amplitude between each gear to improve the adaptability to children of different body shapes.

[0042] like Figure 2 and 3 In the illustrated embodiment, an elastic resetter 22 is provided on the regulator 2. The elastic resetter 22 is located on the side of the shift lever 21 away from the base 1. The elastic resetter 22 is suitable for making the shift lever 21 approach the base 1 along the second direction and cooperate with the limiting portion 11 to be fixed.

[0043] In some embodiments, the second direction is perpendicular to the upper surface of the base 1 .

[0044] In some embodiments, the elastic returner 22 uses a spring, which is easy to manufacture and install, has low cost, and good maintainability.

[0045] In some embodiments, the limiting portion 11 is a groove structure. At least a part of the gear lever 21 is adapted to be fixed within the limiting portion 11 in a first direction, and the limiting portion 11 is adapted to engage with at least a part of the gear lever 21 to restrict the movement of the gear lever 21 in the first direction. When the gear lever 21 is within the limiting portion 11, it is difficult to move in the first direction, achieving the effect of fixing the gear teeth. The groove structure is convenient to produce, can reduce the space occupied inside the base 1, and is convenient for arranging the buckle adjustment system.

[0046] As Figure 3 In the embodiment shown, the limiting portions 11 are arranged in multiple columns on the base 1 in the first direction. By means of the multiple columns of limiting portions 11, the bonding area of the limiting portions 11 with the gear lever 21 can be increased, the force can be dispersed, and the connection strength can be improved.

[0047] Furthermore, the number of the limiting portions 11 is an even number, and the limiting portions 11 are symmetrically arranged on the base 1 in the first direction. Both ends of the gear lever 21 can be respectively fixed in cooperation with the limiting portions 11 on both sides, thereby obtaining higher stability and reducing the probability of the gear lever 21 disengaging from the current gear position.

[0048] Even further, the limiting portions 11 within each column are arranged at equal intervals, enabling the safety buckle 4 to be evenly switched in height and position at each gear position.

[0049] As Figures 8 to 12 In the embodiment shown, the limiting portions 11 are arranged in a single column on the base 1 in the first direction, which can reduce the space occupied by the limiting portions 11 inside the base 1, making the buckle adjustment system more compact and easier to arrange.

[0050] Furthermore, the limiting portions 11 are arranged at equal intervals, enabling the safety buckle 4 to be evenly switched in height and position at each gear position.

[0051] Even further, the limiting portions 11 are arranged close to the central axis position of the base 1 in the first direction, making the force between the gear lever 21 and the limiting portions 11 more uniform and stable. Especially when the number of the elastic resetters 22 is an even number and the number of the through holes 25 is set to two, by symmetrically arranging the elastic resetters 22 and the through holes 25 on both sides of the limiting portions 11 respectively, the force between each component is more balanced and stable, and the bonding strength is higher.

[0052] In some embodiments, the number of the elastic resetters 22 is an even number, and the elastic reset members 22 are symmetrically arranged on both sides of the central axis of the base 1 in the first direction, which can effectively stabilize the state of the gear lever 21, make the fixed state of the gear lever 21 against the limiting portion 11 more stable, and can reduce the probability of the gear lever 21 disengaging from the limiting portion 11.

[0053] As Figures 3 to 7In the illustrated embodiment, an adjusting seat 23 is provided on the adjuster 2, and an elastic reset device 22 is disposed within the adjusting seat 23. The adjusting seat 23 is provided with a movable opening 231 along a second direction. The gear lever 21 passes through the adjusting seat 23 along the movable opening 231 and is cooperatively connected with the elastic reset device 22. The adjusting seat 23 can guide the movement of the gear lever 21 through the movable opening 231, so that the gear lever 21 can maintain structural stability even when it disengages from the limiting portion 11, reducing the probability of tilting and deviation.

[0054] As Figures 3 to 7 In the illustrated embodiment, the cross-section of the gear lever 21 is circular. The second end of the adjusting belt 3 passes by the gear lever 21 on the side of the gear lever 21 away from the first end of the adjusting belt 3, and then extends outwards from the base 1 to form a starting position. The circular cross-section of the gear lever 21 enables the adjusting belt 3 to pass smoothly by the gear lever 21, reducing contact wear with the surface of the gear lever 21 and reducing jamming during the retraction and extension of the adjusting belt 3. The gear lever 21 is adapted to form a bent structure between the first end and the second end of the adjusting belt 3. It can be understood that the gear lever 21 can cause any point between the first end and the second end of the adjusting belt 3 to deviate from the straight line between the first end and the second end in the straightened state, forming a bent structure and changing the distance between the first end and the second end of the adjusting belt 3. When the position of the first end of the adjusting belt 3 is fixed, the gear lever 21 can increase or decrease the deviation amplitude through movement, thereby realizing the control of the movement range of the second end, and further realizing the adjustment of the position and movement range of the safety buckle 4 connected to the second end.

[0055] As Figures 3 to 7 In the illustrated embodiment, the adjuster 2 extends outwards on both sides in a first direction to form adjusting plates 24. A through opening 25 is formed between the two adjusting plates 24. The second end of the adjusting belt 3 is adapted to extend out from the through opening 25 to the outside of the base 1 and be connected to the safety buckle 4. An adjusting opening 12 for the adjusting belt 3 to pass through is provided on the base 1, and the adjusting plates 24 are adapted to always cover the adjusting opening 12 when the adjuster 2 slides.

[0056] The adjusting plates 24 can play a protective role to prevent foreign objects and dust from falling into the base 1 through the adjusting opening 12. In addition to being used for the adjusting belt 3 to pass through, the through opening 25 can also be used for the operation of adjusting the strip. By operating and pressing the gear lever 21 from the through opening 25 with a finger or other tool, the gear lever 21 can be disengaged from the gear engagement with the current limiting portion 11, enabling the adjuster 2 to perform movable adjustment.

[0057] As Figures 13 to 14In the illustrated embodiment, the adjustment strap 3 has another connection method. The number of through ports 25 is set to two. The two through ports 25 are symmetrically distributed on the adjuster 2 along the first direction. The two ends of the adjustment strap 3 form the first ends, and the middle part of the adjustment strap 3 forms the second end. The adjustment strap 3 is sleeved to the safety buckle 4. The two ends of the adjustment strap 3 are adapted to respectively cooperate to enter the base 1 through the through ports 25 and be connected inside the base 1. While ensuring the evenness of the force, the connection structure strength of the adjustment strap 3 can be effectively improved, and the probability of detachment of the base 1, the adjustment strap 3 and the safety buckle 4 can be reduced. As Figure 13 In the illustrated embodiment, the through ports 25 are parallel to the first direction.

[0058] As Figure 14 In the illustrated embodiment, the through ports 25 are perpendicular to the first direction.

[0059] It should be noted that when the adjustment strap 3 is connected through the two through ports 25, since the area of the through ports 25 may be too small and the positions are changed, it may be difficult to operate and press the gear lever 21 through the through ports 25 with fingers or other tools. Therefore, new through ports 25 can be opened on the adjustment plate 24 (refer to Figure 9 and Figure 10 ), which are specifically used to operate and press the gear lever 21.

[0060] As Figure 15 In the illustrated embodiment, a guiding hook 41 is provided on the safety buckle 4. The hooked side of the guiding hook 41 faces the adjustment strap 3. The guiding hook 41 is adapted to connect and limit the external safety belt. The guiding hook 41 is used for the extended connection of the safety buckle 4 and can be connected and cooperated with the safety belt originally available on the vehicle, increasing the usage scenarios.

[0061] As Figure 15 In the illustrated embodiment, the front end of the guiding hook 41 is a plate-shaped member and has a certain width, which can increase the contact area when hooking the vehicle's safety belt, thereby improving the connection stability and reducing the compression damage of the guiding hook 41 to the vehicle's safety belt.

[0062] As Figure 1 、 2 and as shown in 15, the present application also provides a safety seat, including the buckle adjustment system of any of the above embodiments. The safety seat 5 can adapt to the sitting of children with different body types through the buckle adjustment system.

[0063] As Figure 1 and 2 In the illustrated embodiment, the adjuster 2 is adapted to slide along the first direction, and the first direction is the front-back direction of the safety seat 5.

[0064] Specifically, the side where the base 1 is connected to the first end of the adjusting belt 3 can be oriented toward the outside of the safety seat 5, and the other side of the base 1 can be oriented toward the inside of the safety seat 5. When the adjuster 2 slides away from the side where the base 1 is connected to the first end of the adjusting belt 3, the adjusting belt 3 is accommodated in the base 1, and the safety buckle 4 can be lowered in height and closer to the backrest of the safety seat 5; when the adjuster 2 slides toward the side where the base 1 is connected to the first end of the adjusting belt 3, the adjusting belt 3 can be pulled out of the base 1, and the safety buckle 4 can be raised in height and further away from the backrest of the safety seat 5, thereby adapting to the restraint of children of different age groups, such as newborns, toddlers, and schoolchildren.

[0065] The safety seat 5 can achieve higher economic applicability through the buckle adjustment system, and there is no need to replace a different safety seat 5 for each age group of the child, which is more environmentally friendly.

[0066] In some embodiments, the safety buckle 4 is provided with a locking opening, which can be locked in cooperation with the safety belt of the safety seat 5 to achieve good restraint for children of smaller size and age.

[0067] like Figure 1 and 15 In the illustrated embodiment, a guide hook 41 is provided on the safety buckle 4. The guide hook 41 is suitable for cooperating with the three-point safety belt to form a four-point fixing structure. It is understandable that when the child is older and larger, he or she will occupy most of the space of the safety seat 5. If the safety belt of the safety seat 5 continues to be used to restrain the child, the riding comfort of the child will decrease, and it may even be difficult to restrain and lock the child, resulting in a decrease in safety. At this time, the guide hook 41 can be used to cooperate with the safety belt in the car to form a four-point fixing structure, so as to restrain older and large children, and avoid the phenomenon that the safety belt in the car interferes with the child's neck due to the child's insufficient height, thereby effectively improving the riding comfort and safety of older and large children.

[0068] like Figure 1 In the illustrated embodiment, an operation port 51 is provided on the safety seat 5, and the adjuster 2 extends to both sides in a first direction to form an adjustment plate 24, and a through port 25 is formed between the adjustment plates 24 on both sides. When the adjustment plate 24 slides with the adjuster 2, the through port 25 is always exposed in the operation port 51, and the adjustment plate 24 is suitable for always covering the operation port 51 when sliding with the adjuster 2, which can effectively improve the aesthetics and structural stability of the combination of the buckle adjustment system and the safety seat 5, reduce the exposure of the structure of the buckle adjustment system on the safety seat 5, and facilitate operation.

[0069] The basic principles, main features and advantages of the present application have been described above. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements will occur to the present application, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A snap adjustment system, characterized in that: It includes a base, a regulator, an adjustment strap and a safety buckle. The regulator is slidably arranged on the base. The first end of the adjustment strap is fixedly connected to the base inside the base. The second end of the adjustment strap is adapted to pass through the regulator and is connected to the safety buckle outside the base. The regulator is adapted to slide along the base to change the starting position where the second end of the adjustment strap extends outside the base, and cooperate with the base to limit the length of the second end of the adjustment strap exposed outside the base.

2. The snap adjustment system according to claim 1, wherein: The regulator is adapted to slide in a first direction. A plurality of limiting parts are arranged on the base along the first direction. The first end of the adjustment strap is connected to the base on one side of the limiting part along the first direction. The regulator includes a gear lever, and the gear lever is in contact and cooperation with the adjustment strap. The gear lever is adapted to move along the first direction to adjust the length of the adjustment strap from the first end to the regulator. The gear lever is adapted to cooperate and fix with different limiting parts to limit the relative sliding of the regulator and the base.

3. The snap adjustment system according to claim 2, wherein: An elastic reset device is arranged on the regulator. The elastic reset device is located on the side of the gear lever away from the base. The elastic reset device is adapted to make the gear lever approach the base along a second direction and cooperate and fix with the limiting part. The limiting part is a groove structure and is adapted to fit at least part of the gear lever to limit the movement of the gear lever along the first direction.

4. A snap adjustment system as claimed in claim 3, wherein: The limiting parts are arranged in a single row along the first direction on the base; the limiting parts are arranged at equal intervals; the limiting parts are arranged close to the central axis position of the base along the first direction.

5. The snap adjustment system according to claim 3, wherein: The limiting parts are arranged in multiple rows along the first direction on the base; the number of the limiting parts is an even number, and the limiting parts are symmetrically arranged on both sides of the central axis of the base along the first direction; the limiting parts in each row are arranged at equal intervals.

6. The snap adjustment system according to claim 3, wherein: The cross-section of the gear lever is circular. The second end of the adjustment strap passes by the gear lever on the side of the gear lever away from the first end of the adjustment strap, and then extends outwards from the base to form a starting position. The gear lever is adapted to form a bending structure between the first end and the second end of the adjustment strap. The number of the elastic reset devices is an even number, and the elastic reset parts are symmetrically arranged on both sides of the central axis of the base along the first direction. An adjustment seat is arranged on the regulator, the elastic reset device is arranged in the adjustment seat, the adjustment seat is provided with a movable opening along the second direction, and the gear lever passes through the adjustment seat along the movable opening and is connected with the elastic reset device in cooperation.

7. The snap adjustment system according to claim 2, wherein: The regulator extends outwards on both sides in the first direction to form adjustment plates. A through opening is formed between the adjustment plates on both sides. The second end of the adjustment strap is adapted to extend out from the through opening to the outside of the base and is connected with the safety buckle. The base is provided with an adjustment opening for the adjustment strap to pass through, and the adjustment plate is adapted to always cover the adjustment opening when sliding along with the regulator.

8. A snap adjustment system according to claim 7, wherein: The number of the through ports is two, and the two through ports are symmetrically distributed on both sides of the central axis of the regulator in the first direction. Both ends of the adjusting belt form a first end, and the middle part of the adjusting belt forms a second end. Both ends of the adjusting belt are adapted to be respectively inserted into the base through the through ports and connected inside the base.

9. The snap adjustment system according to claim 1, wherein: The safety buckle is provided with a guiding hook, the hooking side of the guiding hook faces the adjusting belt, and the guiding hook is adapted to connect and limit an external safety belt.

10. A safety seat, characterized in that: For the buckle adjusting system according to any one of claims 1 to 9, the regulator is adapted to slide in the first direction, the first direction is the front-back direction of the safety seat, and the first end of the adjusting belt is closer to the outside of the safety seat than the starting position where the second end of the adjusting belt extends to the outside of the base.

11. A safety seat according to claim 10, characterized in that: The safety buckle is provided with a guiding hook, and the guiding hook is adapted to cooperate with and hook a three-point safety belt to form a four-point fixing structure; an operation port is provided on the safety seat. The regulator extends to both sides in the first direction to form adjusting plates, and a through port is formed between the two adjusting plates on both sides. When the adjusting plates slide with the regulator, the adjusting port is always exposed in the operation port, and when the adjusting plates slide with the regulator, they are adapted to always cover the operation port.

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