Child safety seat

Abstract

The utility model discloses a child safety seat, child safety seat includes: the body group, including backrest and seat part, locking piece, locking piece includes locking portion, fixed part and fixed pin, and fixed part is connected in the upper end of locking portion, and fixed pin includes first connecting part and second connecting part, and the included angle between first connecting part and locking portion has, and in the direction of the upper end to the lower end of first connecting part, first connecting part extends to the backrest, and the included angle between second connecting part and first connecting part has, and the end of second connecting part away from first connecting part extends to the direction away from backrest, and fixed part and second connecting part are all suitable with the backrest through fastener connection, headrest group, including headrest part and locking mechanism, and headrest part is movable along the height direction of backrest, and locking mechanism is used for with locking portion locking. According to the child safety seat of the utility model, can strengthen the locking strength of locking piece, prevent headrest group from jumping when suffering the impact, guarantee security.

Description

Technical Field

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

[0002] In existing technologies, the headrest components of child safety seats often exhibit a "gear shift" phenomenon due to insufficient structural design or material strength. This gear shift not only reduces the head support effect but may also cause the seat belt path to deviate due to headrest displacement, further weakening the seat belt's fixing effect and seriously affecting safety and user experience. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a child safety seat that enhances the locking strength of the locking plates, preventing the headrest assembly from disengaging upon impact and ensuring safety.

[0004] A child safety seat according to an embodiment of the present invention includes: a body assembly, the body assembly including a backrest and a seat; a locking plate, the locking plate being disposed on the backrest and including a locking part, a fixing part, and a fixing pin, the locking part extending along the height direction of the backrest, the fixing part being connected to the upper end of the locking part, the fixing pin including a first connecting part and a second connecting part, the first connecting part being connected to the lower end of the locking part and having an angle with the locking part, the first connecting part extending towards the backrest in the direction from the upper end to the lower end of the first connecting part, the second connecting part being connected to the lower end of the first connecting part and having an angle with the first connecting part, the end of the second connecting part away from the first connecting part extending towards the direction away from the backrest, the fixing part and the second connecting part being adapted to be connected to the backrest by fasteners; and a headrest assembly, the headrest assembly being disposed on the body assembly and including a headrest component and a locking mechanism, the headrest component being movable along the height direction of the backrest, and the locking mechanism being used to lock with the locking part.

[0005] According to an embodiment of the present invention, a child safety seat includes a locking plate comprising a locking part, a fixing part, and a fixing pin. The fixing part and the fixing pin are respectively connected to the upper and lower ends of the locking part. The fixing pin includes a first connecting part and a second connecting part. The first connecting part is used to reduce the distance between the locking plate and the backrest. The fixing part and the second connecting part are used to connect with the backrest through fasteners. This ensures the locking plate is firmly fixed, enhances the locking strength of the locking plate, ensures the reliability of the locking plate assembly, prevents the locking plate from loosening or falling off due to vibration, collision, or child activity, ensures the locking mechanism is firmly locked to the locking part, prevents the headrest assembly from jumping out of position when subjected to impact, ensures the headrest assembly effectively protects the child's head, ensures safety, and improves the user experience.

[0006] In addition, the child safety seat according to this utility model may also have the following additional technical features: In some embodiments, the backrest has a fixing post, the second connecting portion has a connecting hole, and the fastener passes through the connecting hole to connect with the fixing post.

[0007] In some embodiments, the locking portion has a plurality of locking holes, which are spaced apart along the extending direction of the locking portion, and the locking mechanism may selectively engage with one of the plurality of locking holes.

[0008] In some embodiments, the locking mechanism includes: a locking hook rotatably disposed on the headrest component, the locking hook selectively engaging with one of the plurality of locking holes, the locking hook having a drive shaft spaced apart from the rotation center of the locking hook; and an adjusting member movably disposed on the headrest component in a vertical direction, the adjusting member extending along the height direction of the backrest, the adjusting member having a drive groove that is inclined upward in the direction from the headrest assembly to the backrest, and the drive shaft movably passing through the drive groove.

[0009] In some embodiments, the locking mechanism further includes an elastic element, one end of which is adapted to abut against the adjusting member and the other end of which is adapted to abut against the headrest member, for driving the adjusting member to move downward.

[0010] In some embodiments, the locking hooks are a plurality of hooks spaced apart in the left-right direction, and the locking pieces are a plurality of hooks corresponding one-to-one with the plurality of locking hooks.

[0011] In some embodiments, the adjusting member is an integral piece and includes: an adjusting rod extending along the height direction of the backrest, and a driving groove disposed at the lower end of the adjusting rod; and an adjusting handle connected to the upper end of the connecting rod for driving the adjusting rod to move along the height direction of the backrest.

[0012] In some embodiments, the child safety seat further includes: a shoulder strap connected to the backrest; a shoulder strap protector sleeved on the shoulder strap, the upper end of the shoulder strap protector being connected to a first hook and loop fastener, and a second hook and loop fastener being connected to the backrest or the headrest component, wherein one of the first hook and loop fastener and the second hook and loop fastener has a hook surface and the other has a rough surface, and the hook surface and the rough surface cooperate with each other.

[0013] In some embodiments, the backrest includes: a backrest body, the locking piece being disposed on the backrest body; and a back pad, the back pad being disposed on the backrest body and located below the headrest assembly, the back pad being detachably connected to the backrest body, and when the second hook-and-loop fastener is connected to the backrest, the second hook-and-loop fastener is connected to the back pad.

[0014] In some embodiments, the shoulder strap protector includes: a shoulder strap cover, which is sleeved on the shoulder strap; and a cushioning plate, which is disposed inside the shoulder strap cover.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of a child safety seat according to an embodiment of the present utility model, wherein the shoulder straps and shoulder strap covers are not shown; Figure 2 This is a front view of a child safety seat according to an embodiment of the present utility model, wherein the shoulder straps and shoulder strap covers are not shown, and the locking mechanism is locked with the locking part; Figure 3 It is along Figure 2 Sectional view of line AA in the middle; Figure 4 yes Figure 3 Enlarged view of point C in the middle; Figure 5 It is along Figure 2 Sectional view of the middle BB line; Figure 6This is a front view of a child safety seat according to an embodiment of the present utility model, wherein the shoulder straps and shoulder strap cover are not shown, and the locking mechanism and locking part are unlocked; Figure 7 It is along Figure 6 Sectional view of the DD line; Figure 8 yes Figure 7 Enlarged view at point E in the middle; Figure 9 This is a perspective view of the headrest assembly of a child safety seat according to an embodiment of the present invention; Figure 10 This is a perspective view of the headrest assembly of a child safety seat according to an embodiment of the present invention from another angle; Figure 11 This is a perspective view of the headrest assembly of a child safety seat according to an embodiment of the present utility model, wherein the headrest plate is not shown; Figure 12 This is a right view of the headrest assembly of a child safety seat according to an embodiment of the present utility model, wherein the locking hook is in a locked state; Figure 13 This is a right view of the headrest assembly of a child safety seat according to an embodiment of the present utility model, wherein the locking hook is in the unlocked state; Figure 14 This is a perspective view of a child safety seat according to an embodiment of the present utility model, wherein the headrest assembly, shoulder straps, and shoulder strap guards are not shown; Figure 15 This is a perspective view of a child safety seat according to an embodiment of the present utility model, wherein the headrest assembly, shoulder straps and shoulder strap guards are not shown, and only a locking piece is shown; Figure 16 yes Figure 15 Enlarged view at point F; Figure 17 This is a perspective view of the locking piece of a child safety seat according to an embodiment of the present utility model; Figure 18 This is a structural schematic diagram of a child safety seat according to an embodiment of the present utility model; Figure 19 This is a structural schematic diagram of the shoulder strap guard of a child safety seat according to an embodiment of the present utility model.

[0017] Figure label: 100. Child safety seats; 1. Main body assembly; 11. Backrest; 111. Fixing post; 112. Backrest body; 113. Back cushion; 12. Seat; 2. Locking piece; 21. Locking part; 211. Locking hole; 22. Fixing pin; 221. First connecting part; 222. Second connecting part; 2221. Connecting hole; 23. Fixing part; 3. Headrest assembly; 31. Headrest component; 311. Headrest plate; 312. Headrest buffer; 313. Slider; 314. Fixing module; 32. Locking mechanism; 321. Locking hook; 3211. Drive shaft; 3212. Pivot shaft; 322. Adjusting component; 3221. Drive groove; 3222. Adjusting rod; 3223. Adjusting handle; 323. Elastic component; 4. Shoulder straps; 5. Shoulder strap protector; 51. Shoulder strap fabric protector; 52. Cushioning plate; 6. Base assembly. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The following description, with reference to the accompanying drawings, describes a child safety seat 100 according to an embodiment of the present invention.

[0023] like Figure 1 and Figure 15 As shown, the child safety seat 100 according to an embodiment of the present utility model includes: a body assembly 1, a locking piece 2, and a headrest assembly 3.

[0024] Specifically, see the attached document. Figure 1 Appendix Figure 2 and attached Figure 6 As shown, the main body assembly 1 includes a backrest 11 and a seat 12. The backrest 11 is the main support structure of the child safety seat 100, which is used to directly contact the child's back and can provide overall support and side protection. In frontal or rear-end collisions, the backrest 11 can disperse the impact force through its overall structure, preventing the child's body from leaning forward or backward and reducing the shear force on the spine. The seat 12 is the part of the child safety seat 100 with the largest contact area with the child's body. It can disperse the pressure on the buttocks and fix the body. It absorbs the vertical impact force during a collision, reduces the risk of buttock injury, and through reasonable design, it can avoid local pressure and improve the comfort of long-distance travel.

[0025] Furthermore, in conjunction with the reference appendix Figure 15 and attached Figure 17 As shown, the locking piece 2 is disposed on the backrest 11 and includes a locking part 21, a fixing part 23, and a fixing pin 22. The locking part 21 is located along the height direction of the backrest 11 (see attached figure). Figure 3 Extending in the direction shown (a), the fixing part 23 is connected to the upper end of the locking part 21. The fixing pin 22 includes a first connecting part 221 and a second connecting part 222. The first connecting part 221 is connected to the lower end of the locking part 21 and has an angle with the locking part 21. In the direction from the upper end to the lower end of the first connecting part 221 (as shown in the diagram), the fixing part 23 is connected to the upper end of the locking part 21. Figure 7 As shown, the first connecting portion 221 extends toward the backrest 11, the second connecting portion 222 is connected to the lower end of the first connecting portion 221 and has an angle with the first connecting portion 221, the end of the second connecting portion 222 that is away from the first connecting portion 221 extends toward the backrest 11, and both the fixing portion 23 and the second connecting portion 222 are adapted to be connected to the backrest 11 by fasteners.

[0026] Furthermore, see the attached document. Figure 2 and attached Figure 5As shown, the headrest assembly 3 is used to protect the head and cervical spine, absorbing the impact force on the head during a collision, reducing the risk of concussion or cervical spine injury, and can wrap around both sides of the head to prevent the head from swaying from side to side during a side collision, reducing whiplash injury. The headrest assembly 3 is mounted on the main body assembly 1 and includes a headrest component 31 and a locking mechanism 32. The headrest component 31 is movable along the height direction of the backrest 11, and the locking mechanism 32 is used to lock with the locking part 21. The user can adjust the height of the headrest component 31, and the headrest assembly 3 and the main body assembly 1 can be locked in the vertical direction (e.g., by cooperating with the locking mechanism 32 and the locking part 21). Figure 2 The relative positions on the child safety seat 100 are fixed so that the child safety seat 100 can protect children of different ages, heights and weights.

[0027] It is understandable that by providing a fixing part 23 at the upper end of the locking part 21 and a fixing pin 22 at the lower end of the locking part 21, and by connecting the fixing part 23 and the second connecting part 222 to the backrest 11 with fasteners, the locking piece 2 can be connected to the backrest 11 at both the upper and lower ends, ensuring the locking piece 2 is firmly fixed, enhancing the locking strength of the locking piece 2, ensuring the reliability of the locking piece 2 assembly, preventing the locking piece 2 from loosening or falling off due to vibration, collision or child activity, ensuring the firmness of the locking mechanism 32 and the locking part 21, preventing the headrest assembly 3 from jumping out when subjected to impact, ensuring the headrest assembly 3 effectively protects the child's head, ensuring safety, and reducing the difficulty of assembling and disassembling the locking piece 2 and the backrest 11, making it easier to maintain and repair the child safety seat 100.

[0028] The fixed pin 22 includes a first connecting part 221 and a second connecting part 222. The first connecting part 221 is connected to the lower end of the locking part 21 and has an angle with the locking part 21. In the direction from the upper end to the lower end of the first connecting part 221, the first connecting part 221 extends towards the backrest 11, which can reduce the distance between the locking piece 2 and the backrest 11, and facilitate the connection between the lower end of the locking piece 2 and the body. The second connecting part 222 is connected to the lower end of the first connecting part 221 and has an angle with the first connecting part 221. The end of the second connecting part 222 that is away from the first connecting part 221 extends towards the backrest 11, which can make the second connecting part 222 extend in a generally horizontal direction, so that the axis of the fastener is in the vertical direction. This can more efficiently withstand the tensile force from above, reduce the damage of shear stress to the fastener, improve the connection reliability, and ensure the fixing stability of the locking piece 2.

[0029] It is understandable that the locking mechanism 32 has a locked state and an unlocked state. In the locked state, such as... Figure 3 and Figure 4As shown, the locking mechanism 32 is locked to the locking part 21, and the headrest component 31 cannot move along the height direction of the backrest 11. The headrest assembly 3 is fixed relative to the body assembly 1. In the unlocked state, as... Figure 7 and Figure 8 As shown, the locking mechanism 32 and the locking part 21 are disconnected, and the headrest component 31 can move along the height direction of the backrest 11 to adjust the height of the headrest assembly 3.

[0030] Preferably, the locking piece 2 is made of iron. On the one hand, this can ensure the tensile strength of the locking piece 2, prevent the locking piece 2 from deforming or breaking when it is used for a long time or subjected to large tensile forces, ensure the stability of the locking piece 2, and extend the service life of the child safety seat 100. On the other hand, it can reduce the production and processing cost of the locking piece 2, reduce the production and processing difficulty of the locking piece 2, and improve the mechanical properties of the locking piece 2.

[0031] Further, see attached document. Figure 10 As shown, one of the backrest 11 and the headrest component 31 is provided with a sliding groove, and the other is provided with a slider 313. The sliding groove extends along the height direction of the backrest 11, and the slider 313 is disposed in the sliding groove and is movable along the extension direction of the sliding groove. When adjusting the height of the headrest assembly 3, the slider 313 and the sliding groove cooperate to guide the headrest assembly 3, preventing the headrest assembly 3 from moving in the left and right directions (e.g., ...). Figure 10 An offset appears on (as shown). Optionally, the backrest 11 may have a groove and the headrest component 31 may have a slider 313, or the backrest 11 may have a slider 313 and the headrest component 31 may have a groove.

[0032] Furthermore, see the attached document. Figure 9 As shown, the headrest component 31 includes a headrest plate 311 and a headrest buffer 312. The headrest plate 311 serves as the skeleton of the headrest assembly 3 and is typically made of high-strength engineering plastic or metal support, possessing high rigidity and resistance to deformation. It is used to withstand the impact force during a collision. During a collision, the headrest plate 311 disperses the impact force through its overall structure, preventing the child's head from tilting excessively backward or to the side, and reducing the shear force borne by the cervical spine. The headrest buffer 312 is fixed to the headrest plate 311 by snap-fit ​​and / or adhesive. The headrest buffer 312 is used to directly contact the child's head and enhances comfort through soft materials and ergonomic design, while also assisting in cushioning the impact. During a collision, the headrest buffer 312 absorbs the impact force on the head through compression deformation, reducing the risk of concussion or cervical spine injury.

[0033] Furthermore, see the attached document. Figure 1 As shown, the child safety seat 100 also includes a base assembly 6, which serves as the base of the child safety seat 100 and is used to fix the child safety seat 100 to the vehicle seat. It can disperse the collision force and improve the stability of the child safety seat 100.

[0034] According to an embodiment of the present invention, the child safety seat 100 includes a locking part 21, a fixing part 23, and a fixing pin 22 via a locking piece 2. The fixing part 23 and the fixing pin 22 are respectively connected to the upper and lower ends of the locking part 21. The fixing pin 22 includes a first connecting part 221 and a second connecting part 222. The first connecting part 221 is used to reduce the distance between the locking piece 2 and the backrest 11. The fixing part 23 and the second connecting part 222 are used to connect with the backrest 11 via fasteners. This ensures the firmness of the locking piece 2, enhances the locking strength of the locking piece 2, ensures the reliability of the locking piece 2 assembly, prevents the locking piece 2 from loosening or falling off due to vibration, collision, or child activity, ensures the firmness of the locking mechanism 32 locked to the locking part 21, prevents the headrest assembly 3 from jumping out of position when subjected to impact, ensures the effective protection of the child's head by the headrest assembly 3, ensures safety, and improves the user experience.

[0035] In some embodiments of this utility model, reference is made to the appendix. Figure 16 As shown, the backrest 11 has a fixing post 111, and the second connecting part 222 has a connecting hole 2221. The fastener passes through the connecting hole 2221 to connect with the fixing post 111. It can be understood that since the surface of the backrest 11 facing the locking piece 2 is inclined, it is not convenient to install the fastener. If the fastener is directly connected to the backrest 11, the reliability is not good. The setting of the fixing post 111 can transform the connecting surface between the backrest 11 and the locking piece 2 into a horizontal surface, which makes it easier for the fastener to connect the second connecting part 222 and the fixing post 111, thereby ensuring the reliability of the connection between the locking piece 2 and the backrest 11.

[0036] It should be noted that during the adjustment of the headrest assembly 3, the presence of the fixing post 111 may cause interference between the fixing post 111 and the headrest assembly 3. The first connecting part 221 can move the plane connecting the locking piece 2 and the backrest 11 to a position further away from the headrest assembly 3, thereby effectively improving the problem of interference between the fixing post 111 and the headrest assembly 3, ensuring the normal locking of the locking mechanism 32 and the locking part 21, ensuring smooth and stable height adjustment of the headrest assembly 3, and improving the user experience.

[0037] In some embodiments of this utility model, reference is made to the appendix. Figure 4 and attached Figure 17 As shown, the locking part 21 has a plurality of locking holes 211, which are located along the extending direction of the locking part 21 (see attached diagram). Figure 17As shown in direction a), the locking mechanism 32 can be selectively engaged with one of the multiple locking holes 211. It is understood that children's height changes significantly from the newborn stage to the toddler stage and then to the older child stage. The multiple locking holes 211 can be arbitrarily selected by the locking mechanism 32, so that the headrest assembly 3 can adjust the height with a smaller adjustment step, ensuring that the head support is always above or level with the ears, avoiding the child's head from tilting forward or backward, reducing the shearing force on the child's neck during a collision, and ensuring the child's safety.

[0038] In a further embodiment of this utility model, reference is made to the appendix. Figure 4 Appendix Figure 8 Appendix Figure 12 and attached Figure 13 As shown, the locking mechanism 32 includes a locking hook 321 and an adjusting member 322. The locking hook 321 is rotatably mounted on the headrest component 31. The locking hook 321 can selectively engage with one of a plurality of locking holes 211. The locking hook 321 is provided with a drive shaft 3211, which is spaced apart from the rotation center of the locking hook 321. The adjusting member 322 is movably mounted on the headrest component 31 in the vertical direction and extends along the height direction of the backrest 11. The adjusting member 322 has a drive groove 3221. In the direction from the headrest assembly 3 to the backrest 11, the drive groove 3221 is inclined upward. The drive shaft 3211 is movably inserted into the drive groove 3221. Through the engagement of the drive shaft 3211 and the drive groove 3221, the locking hook 321 can be driven to rotate, so as to lock the locking hook 321 with the locking hole 211 or to disengage the locking hook 321 from the locking hole 211.

[0039] Understandably, parents can pull the adjusting piece 322 upwards. As the adjusting piece 322 moves relative to the headrest component 31, the drive groove 3221 moves upwards along with the adjusting piece 322. Since the locking hook 321 can only rotate in place relative to the headrest component 31, the drive shaft 3211 moves within the drive groove 3221, causing the locking hook 321 to rotate in place until the locking hook 321 disengages from the locking hole 211. At this point, the headrest component 31 and the adjusting piece 322 move synchronously. The adjusting piece 322 can drive the headrest component 31 to move arbitrarily along the height direction of the backrest 11 until it is adjusted to the height of the headrest assembly 3 required by the user. The parent then releases the adjusting piece 322, the locking hook 321 resets and engages with the locking hole 211 again, thus fixing the height of the headrest assembly 3. The height adjustment of the headrest assembly 3 is then complete.

[0040] It should be noted that the reference appendix... Figure 12 and attached Figure 13As shown, the locking hook 321 is provided with a pivot shaft 3212, the center line of which is the rotation center of the locking hook 321. The headrest component 31 is provided with a fixing module 314, which is used to install the pivot shaft 3212 to ensure that the locking hook 321 can rotate in place relative to the headrest plate 311. The fixing module 314 can be fixed to the headrest plate 311 by fasteners, or it can be directly integrated with the headrest plate 311 as a whole. No further limitations are made here.

[0041] In a further embodiment of this utility model, reference is made to the appendix. Figure 3 and attached Figure 11 As shown, the locking mechanism 32 also includes an elastic element 323. One end of the elastic element 323 is adapted to abut against the adjusting element 322, and the other end is adapted to abut against the headrest component 31. It is used to drive the adjusting element 322 to move downward. It can be understood that when the parent pulls the adjusting element 322 upward, the elastic element 323 is compressed during the upward movement of the adjusting element 322 relative to the headrest component 31. When the parent releases the adjusting element 322, the elastic element 323 resets and drives the adjusting element 322 to move downward relative to the headrest component 31. Due to the cooperation between the drive shaft 3211 and the drive groove 3221, the locking hook 321 is reset and cooperates with the locking hole 211, thereby realizing the automatic reset and locking of the locking hook 321 without the user having to apply additional force, improving the operating experience, and ensuring that the headrest assembly 3 can automatically lock to ensure safety and avoid safety hazards caused by the headrest assembly 3 not being locked.

[0042] Of course, this utility model is not limited to this. It can also be that the parent pushes the adjusting member 322 downward to lock it after the headrest assembly 3 height is adjusted.

[0043] In a further embodiment of this utility model, in conjunction with reference to the appendix... Figure 11 and attached Figure 14 As shown, there are multiple locking hooks 321 spaced apart in the left-right direction, and multiple locking pieces 2 corresponding one-to-one with the multiple locking hooks 321. Through the cooperation of multiple sets of locking pieces 2 and locking hooks 321, the headrest assembly 3 and the main body assembly 1 can be cooperated from multiple points spaced apart in the left-right direction of the child safety seat 100. Under the normal use state of the child safety seat 100, the relative fixation between the headrest assembly 3 and the main body assembly 1 can be ensured, reducing the risk of the headrest assembly 3 jumping out of the gear when subjected to impact, ensuring that the headrest assembly 3 effectively protects the child's head and ensures safety. When adjusting the height of the headrest assembly 3 of the child safety seat 100, the headrest assembly 3 can be prevented from shifting.

[0044] In a further embodiment of this utility model, reference is made to the appendix. Figure 11As shown, the adjustment component 322 is a single piece and includes an adjustment rod 3222 and an adjustment handle 3223. The adjustment rod 3222 extends along the height direction of the backrest 11. A drive groove 3221 is located at the lower end of the adjustment rod 3222, and the adjustment handle 3223 is connected to the upper end of the adjustment rod 3222. The handle is used to move the adjustment rod 3222 along the height direction of the backrest 11. Parents can pull the adjustment handle 3223 upwards to move the adjustment rod 3222 upwards. The adjustment handle 3223 is easy for users to grip and adjust, avoiding delays or safety hazards caused by difficult operation, thereby further improving user satisfaction. It should be noted that by making the adjustment rod 3222 and the adjustment handle 3223 a single piece, the number of parts in the locking mechanism 32 can be reduced, the assembly process of the locking mechanism 32 can be simplified, and the production and assembly costs of the child safety seat 100 can be reduced.

[0045] In a specific example, referring to the appendix Figure 11 and attached Figure 14 As shown, there are two adjusting levers 3222 spaced apart in the left-right direction. The upper ends of both adjusting levers 3222 are connected to the adjusting handle 3223. When the user pulls the adjusting handle 3223, the two adjusting levers 3222 can move upward synchronously. There are two locking hooks 321 spaced apart in the left-right direction. The two locking hooks 321 are symmetrically arranged about the center line of the child safety seat 100. The locking hooks 321 correspond one-to-one with the adjusting levers 3222. There are two locking pieces 2 that correspond one-to-one with the two locking hooks 321.

[0046] In some embodiments of this utility model, reference is made to the appendix. Figure 18 As shown, the child safety seat 100 also includes a shoulder strap 4 and a shoulder strap protector 5. The shoulder strap 4 is connected to the backrest 11 and is used to stabilize the child in the child safety seat 100. In the event of a frontal collision or sudden braking, the shoulder strap 4 restricts the movement of the child's upper body, preventing the head or chest from violently impacting the front of the seat or the vehicle's interior structure. Furthermore, the shoulder strap 4 can evenly distribute the impact force generated by the collision to areas with higher stress, such as the shoulders, chest, and pelvis, reducing structural stress. The shoulder strap protector 5 is fitted onto the shoulder strap 4. On one hand, the shoulder strap protector 5 prevents the shoulder strap 4 from shifting due to compression or child movement, ensuring that the shoulder strap 4 is always in the correct fixed position. On the other hand, the shoulder strap protector 5 reduces direct friction between the shoulder strap 4 and the skin, preventing abrasions caused by prolonged travel or sudden braking.

[0047] Furthermore, a first hook-and-loop fastener is connected to the upper end of the shoulder strap protector 5, and a second hook-and-loop fastener is connected to the backrest 11 or headrest component 31. One of the first and second hook-and-loop fasteners has a hook side, and the other has a loop side. The hook side and the loop side cooperate, and through the cooperation of the first and second hook-and-loop fasteners, the connection reliability between the shoulder strap protector 5 and the backrest 11 or the shoulder strap protector 5 and the headrest component 31 can be improved. This can prevent the position of the shoulder strap protector 5 from changing arbitrarily in the event of an impact, thereby effectively reducing chest acceleration and ensuring the safety of children. Moreover, the shoulder position is different for children of different ages, heights, and weights. Therefore, different positions of the first and second hook-and-loop fasteners can be selected to adjust the position of the shoulder protector according to specific needs.

[0048] It is understandable that when a second hook and loop fastener is connected to the backrest 11, the first hook and loop fastener of the shoulder strap protector 5 may have a hook surface and the second hook and loop fastener of the backrest 11 may have a rough surface, or the first hook and loop fastener of the shoulder strap protector 5 may have a rough surface and the second hook and loop fastener of the backrest 11 may have a hook surface; when a second hook and loop fastener is connected to the headrest component 31, the first hook and loop fastener of the shoulder strap protector 5 may have a hook surface and the second hook and loop fastener of the headrest component 31 may have a rough surface, or the first hook and loop fastener of the shoulder strap protector 5 may have a rough surface and the second hook and loop fastener of the headrest component 31 may have a hook surface.

[0049] In a further embodiment of this utility model, reference is made to the appendix. Figure 18 As shown, the backrest 11 includes a backrest body 112 and a back cushion 113. In frontal, side, or rear-end collisions, the backrest body 112 disperses the impact force through its overall structure, preventing the child's body from leaning forward or backward excessively, and reducing the risk of injury to critical parts such as the spine and internal organs. The locking plate 2 is located on the backrest body 112, and the back cushion 113 is located on the backrest body 112 and below the headrest assembly 3. It is used to directly contact the child's back and improves comfort through soft materials and ergonomic design, while also assisting in cushioning the impact.

[0050] Further, see attached document. Figure 18As shown, the backrest 113 is detachably connected to the backrest body 112. It is understandable that in the newborn stage, a thicker backrest 113 is often needed to provide stronger support and cervical spine support. In the toddler / older child stage, as children grow taller, a thinner backrest 113 or even no backrest 113 can provide more spacious seating and avoid back pressure. The detachable design allows parents to change the backrest 113 to different thicknesses or to omit it altogether, enabling the child safety seat 100 to better protect children of different ages, heights, and weights, improving the user experience. Furthermore, the detachable design allows parents to quickly remove the backrest 113 for separate washing, avoiding the hassle of disassembling the entire child safety seat 100. When a second hook-and-loop fastener is connected to the backrest 11, the second hook-and-loop fastener is attached to the backrest 113, reducing the need for the first and second hook-and-loop fasteners and facilitating the assembly and disassembly of the shoulder strap protectors 5.

[0051] In a further embodiment of this utility model, reference is made to the appendix. Figure 19 As shown, the shoulder strap protector 5 includes a shoulder strap cover 51 and a cushioning plate 52. The shoulder strap cover 51 is fitted onto the shoulder strap 4, and the cushioning plate 52 is located inside the shoulder strap cover 51. After the cushioning plate 52 is inserted into the shoulder strap cover 51, the shoulder strap cover 51 is then sealed by sewing. Adding a cushioning plate 52 inside the shoulder strap cover 51 can increase the rigidity of the shoulder strap protector 5 without affecting comfort, so as to maintain the three-dimensional structure of the shoulder strap protector 5, prevent the shoulder strap protector 5 from deformation due to compression after long-term use, ensure that the shoulder strap 4 is always in the correct middle position of the shoulder, and ensure the effectiveness of the shoulder strap 4. In addition, the cushioning plate 52 has a high energy absorption rate and can absorb the impact force on the shoulder through compression deformation, reducing the direct impact on bones and soft tissues.

[0052] Optionally, the cushioning board 52 can be made of foamed materials such as EPS (Expanded Polystyrene), EPO (Expanded Polyolefin), EPP (Expanded Polypropylene), or EPE (Expanded Polyethylene), all of which can provide a good cushioning effect.

[0053] Preferably, the buffer plate 52 is an EPP block. EPP blocks have high resilience and can quickly deform and absorb energy when impacted, achieving excellent shock absorption effect of the shoulder strap protector 5. Furthermore, due to the lightweight nature of EPP blocks, the weight of the shoulder strap protector 5 can be increased as little as possible, thus minimizing its impact on the child's comfort and ensuring that the total weight of the child safety seat 100 is not excessively affected. At the same time, as a safe and environmentally friendly material, EPP blocks are more suitable for children and can improve user satisfaction with the child safety seat 100.

[0054] Other configurations and operations of the child safety seat 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A child safety seat, characterized in that, include: The body assembly includes a backrest and a seat. A locking piece is disposed on the backrest and includes a locking part, a fixing part, and a fixing pin. The locking part extends along the height direction of the backrest. The fixing part is connected to the upper end of the locking part. The fixing pin includes a first connecting part and a second connecting part. The first connecting part is connected to the lower end of the locking part and forms an angle with the locking part. In the direction from the upper end to the lower end of the first connecting part, the first connecting part extends toward the backrest. The second connecting part is connected to the lower end of the first connecting part and forms an angle with the first connecting part. The end of the second connecting part away from the first connecting part extends toward the direction away from the backrest. Both the fixing part and the second connecting part are adapted to be connected to the backrest by fasteners. A headrest assembly is provided on the main body assembly and includes a headrest component and a locking mechanism. The headrest component is movable along the height direction of the backrest, and the locking mechanism is used to lock with the locking part.

2. The child safety seat according to claim 1, characterized in that, The backrest has a fixing post, and the second connecting part has a connecting hole, through which the fastener passes to connect with the fixing post.

3. The child safety seat according to claim 1, characterized in that, The locking part has a plurality of locking holes, which are spaced apart along the extending direction of the locking part, and the locking mechanism can selectively engage with one of the plurality of locking holes.

4. The child safety seat according to claim 3, characterized in that, The locking mechanism includes: A locking hook is rotatably mounted on the headrest component. The locking hook can selectively engage with one of the plurality of locking holes. The locking hook is provided with a drive shaft, which is spaced apart from the rotation center of the locking hook. An adjusting member is movably disposed on the headrest component in the vertical direction. The adjusting member extends along the height direction of the backrest and has a drive groove. In the direction from the headrest assembly to the backrest, the drive groove is inclined upward, and the drive shaft is movably inserted into the drive groove.

5. The child safety seat according to claim 4, characterized in that, The locking mechanism also includes: An elastic element, one end of which is adapted to abut against the adjusting element and the other end of which is adapted to abut against the headrest component, is used to drive the adjusting element to move downward.

6. The child safety seat according to claim 4, characterized in that, The locking hooks are a plurality of those spaced apart along the left-right direction, and the locking pieces are a plurality of those corresponding one-to-one with the plurality of locking hooks.

7. The child safety seat according to claim 4, characterized in that, The adjusting component is a single piece and includes: An adjusting rod extends along the height direction of the backrest, and a drive groove is provided at the lower end of the adjusting rod; An adjusting handle is attached to the upper end of the adjusting rod and is used to move the adjusting rod along the height direction of the backrest.

8. The child safety seat according to claim 1, characterized in that, Also includes: Shoulder straps, which are attached to the backrest; Shoulder strap protector, the shoulder strap protector is sleeved on the shoulder strap, the upper end of the shoulder strap protector is connected to a first hook and loop fastener, the backrest or the headrest is connected to a second hook and loop fastener, one of the first hook and loop fastener and the second hook and loop fastener has a hook surface and the other has a rough surface, the hook surface and the rough surface cooperate with each other.

9. The child safety seat according to claim 8, characterized in that, The backrest includes: The backrest body, wherein the locking piece is disposed on the backrest body; A back cushion is provided on the backrest body and located below the headrest assembly. The back cushion is detachably connected to the backrest body. When the second hook and loop fastener is connected to the backrest, the second hook and loop fastener is connected to the back cushion.

10. The child safety seat according to claim 8, characterized in that, The shoulder strap protector includes: Shoulder strap cover, the shoulder strap cover is fitted onto the shoulder strap; A cushioning plate is disposed inside the shoulder strap fabric.

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