Headrest height adjusting and limiting mechanism and carrier for children
By incorporating a headrest height adjustment limit mechanism into the child safety seat, and utilizing limit blocks and a release mechanism, the headrest height is ensured to be adjustable within the appropriate age range. This solves the problem of misoperation caused by the lack of clear reminders regarding the headrest height adjustment range, reduces the safety risks for children traveling in vehicles, and improves safety and reliability.
Patent Information
- Application Number
- CN202520429485.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-12
AI Technical Summary
The existing child safety seats lack clear indications regarding the headrest height adjustment range, leading to misoperation and increasing the safety risks for children traveling in vehicles.
The headrest height adjustment limit mechanism is designed to restrict or release the sliding component from sliding along the second adjustment range through the limit block, ensuring that the headrest height can be adjusted within the appropriate age range. This includes the coordinated use of the sliding component, limit block, release mechanism and linkage.
It effectively avoids accidental operation of the headrest height, reduces the safety risks of children riding in cars, and improves the safety and reliability of the car seat.
Smart Images
Figure CN223803453U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of child safety seats, and particularly relates to a headrest height adjustment limiting mechanism and a child carrier. BACKGROUND
[0002] At present, the use age span of a child safety seat is large. In order to enable the same child safety seat to meet the use of children of different age groups, the headrest of the child safety seat is mostly designed as a structure that can move up and down to adjust the height of the headrest. According to the use age of children, two age groups can be roughly divided, and the use height of the headrest is only suitable for selection within a height interval in one age group, for example, 1 to 3 years old. If the headrest is set in the headrest height adjustment interval of a higher age group, the risk coefficient of the child during the ride will greatly increase, and it is also difficult to easily detect whether the use height is in the correct height interval in actual use. At the same time, the existing headrest only needs to be unlocked and directly moved up and down to realize height adjustment. During the operation process, there is no obvious setting to remind the user to control the height interval when adjusting the height of the headrest, which causes the user to often misoperate and set the headrest at a height position that is not suitable for the age group of the child, thereby bringing a large safety risk to the child during the ride and making the use of the child safety seat lose its significance. CONTENT OF THE UTILITY MODEL
[0003] In order to solve the problem of misoperation caused by the lack of obvious reminders in the height adjustment interval of the headrest of the child safety seat in the prior art, the application provides a headrest height adjustment limiting mechanism and a child carrier.
[0004] The application is implemented by the following technical scheme:
[0005] The headrest height adjustment limiting mechanism comprises a sliding assembly connected with the headrest and sliding relative to the backrest, and a limiting block connected with the sliding assembly. The backrest is provided with a sliding groove for the sliding assembly to slide in the vertical direction. The sliding groove comprises a first adjustment interval and a second adjustment interval. The limiting block is used to limit or release the sliding of the sliding assembly along the second adjustment interval.
[0006] As described above, the headrest height adjustment limiting mechanism is unfolded relative to the sliding assembly, so that the top of the limiting block abuts against the top of the sliding groove, thereby limiting the sliding of the sliding assembly along the second adjustment interval. The limiting block is folded relative to the sliding assembly, and the sliding assembly slides along the second adjustment interval.
[0007] The headrest height adjustment limiting mechanism as described above, the headrest is provided with a through hole for the safety belt to pass through from the back, the backrest is provided with an open slot corresponding to the through hole on the moving path of the first adjustment interval, and the limiting block top corresponds to the through hole when the limiting block is unfolded relative to the sliding assembly.
[0008] The headrest height adjustment limiting mechanism as described above, further comprising a release mechanism for limiting or releasing the sliding assembly from sliding along the sliding slot, and a release member cooperating with the release mechanism; the sliding slot is provided with a plurality of limiting slots for the release member to be clamped into to limit the sliding assembly from sliding in the vertical direction.
[0009] The headrest height adjustment limiting mechanism as described above, the release mechanism comprises a linkage member slidingly connected with the headrest and elastically biased;
[0010] The linkage member is provided with a release slot hole for the release member to slide and cooperate to tightly or detach from the sliding slot;
[0011] When the linkage member is pulled, the release slot hole pushes the release member away from the limiting slot to release the limitation of the sliding assembly from sliding along the sliding slot.
[0012] The headrest height adjustment limiting mechanism as described above, the sliding assembly is provided with a protrusion, and the limiting block is provided with a recess for the protrusion to be arranged and embedded when the limiting block is folded relative to the sliding assembly.
[0013] A child carrier with a headrest height adjustment limiting mechanism, comprising a seat body and a headrest; the seat body comprises a backrest, and the headrest is slidingly arranged along the height direction of the backrest; the headrest height adjustment limiting mechanism comprises a limiting block movably connected with the headrest, the backrest is provided with a sliding slot for the limiting block to slide in the vertical direction, the sliding slot comprises a first adjustment interval and a second adjustment interval, and the limiting block is used to limit or release the height of the headrest corresponding to the second adjustment interval from sliding; the limiting block can be switched between a limiting position and a releasing position relative to the headrest; when the limiting block is in the limiting position, the headrest can only slide corresponding to the height of the first adjustment interval; when the limiting block is in the releasing position, the headrest can slide upward corresponding to the height of the second adjustment interval.
[0014] The child carrier with a headrest height adjustment limiting mechanism as described above, the limiting block comprises a first limiting part, when the limiting block is in the limiting position, the first limiting part abuts against or interferes with the edge of the sliding slot, thereby limiting the headrest from sliding corresponding to the height of the second adjustment interval; when the limiting block is in the releasing position, the first limiting part is away from the top edge of the sliding slot.
[0015] The child carrier with the headrest height adjustment limiting mechanism has the headrest including the sliding assembly sliding along the vertical direction of the sliding groove and being movably connected with the limiting block; when the limiting block is in the limiting position, the limiting block is unfolded relative to the sliding assembly, and the sliding assembly can only slide along the first adjustment interval; when the limiting block is in the unlimiting position, the limiting block partially or wholly overlaps with the sliding assembly, and the sliding assembly can slide upward along the second adjustment interval.
[0016] The child carrier with the headrest height adjustment limiting mechanism has the headrest including the sliding assembly sliding along the vertical direction of the sliding groove and being movably connected with the limiting block; when the limiting block is in the limiting position, the limiting block is unfolded relative to the sliding assembly, and the sliding assembly can only slide along the first adjustment interval; when the limiting block is in the unlimiting position, the limiting block partially or wholly overlaps with the sliding assembly, and the sliding assembly can slide upward along the second adjustment interval.
[0017] Compared with the prior art, the application has the following advantages:
[0018] The headrest height adjustment limiting mechanism and the child carrier have the limiting block limiting or releasing the sliding assembly from sliding along the second adjustment interval, when the child is in a lower age group, the limiting block limits the sliding assembly from entering the second adjustment interval, thereby avoiding the headrest being adjusted to a height unsuitable for the age group, and reducing the risk coefficient of the child riding; when the child is suitable for the height of the second adjustment interval, the limiting block can be operated to release the limitation on the sliding assembly, so that the headrest can be adjusted to a higher position, thereby realizing the interval control of the headrest height adjustment, which plays a prompting role, effectively avoids the user from misoperating the headrest to be set at a height position unsuitable for the age group of the child, thereby reducing the safety risk of the child riding, and improving the use safety and reliability of the child safety seat. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.
[0020] Figure 1 is a three-dimensional perspective view of the child carrier in the embodiment of the application Figure 1 ;
[0021] Figure 2 is a three-dimensional perspective view of the child carrier in the embodiment of the application Figure 2 ;
[0022] Figure 3 is a partial exploded view of Figure 1 ;
[0023] Figure 4 is a partial exploded view of Figure 2 ;
[0024] Figure 5 is a rear view of Figure 1 ;
[0025] Figure 6 is a schematic view of the top of the limiting block abutting the top of the sliding groove when the limiting block is unfolded;
[0026] Figure 7 is a schematic view of the limiting block being folded in Figure 6 ;
[0027] Figure 8 is a schematic view of the bottom of the limiting block abutting the top of the sliding groove when the limiting block is folded.
DETAILED DESCRIPTION
[0028] In order to make the technical problems and beneficial effects of the technical solutions of the present application more clearly understood, the present application will be further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described herein are merely intended to explain the present application and are not intended to limit the present application.
[0029] Please refer to Figures 1 to 8 , the headrest height adjustment limiting mechanism includes a sliding assembly 3 connected with the headrest 1 and in sliding connection with the backrest 2, and a limiting block 4 hinged to the sliding assembly 3, the backrest 2 is provided with a sliding groove 5 for the sliding assembly 3 to slide in the vertical direction, the sliding groove 5 includes a first adjustment interval 51 and a second adjustment interval 52, and the limiting block 4 is used to limit or release the limitation of the sliding assembly 3 sliding along the second adjustment interval 52.
[0030] The headrest height adjustment limiting mechanism and the child carrier of the present application use the limiting block to limit or release the limitation of the sliding assembly sliding along the second adjustment interval. When the child is in a lower age group, the limiting block limits the sliding assembly from entering the second adjustment interval, thereby avoiding the headrest being adjusted to a height that is not suitable for the age group, and reducing the risk coefficient of the child riding; when the child is suitable for the height of the second adjustment interval, the limitation of the sliding assembly can be released by operating the limiting block, so that the headrest can be adjusted to a higher position to achieve the interval control of the headrest height adjustment, which plays a prompting role and effectively avoids the user from misoperating the headrest to be set at a height position that is not suitable for the age group of the child, thereby reducing the safety risk of the child riding and improving the use safety and reliability of the child safety seat.
[0031] Further, as a preferred embodiment of the present scheme but not limited, the limiting block 4 is unfolded relative to the sliding assembly 3, so that the top of the limiting block 4 abuts against the top of the sliding groove 5, thereby limiting the sliding of the sliding assembly 3 along the second adjustment interval 52; the limiting block 4 is folded relative to the sliding assembly 3, so that the bottom of the limiting block 4 abuts against the top of the sliding groove 5, thereby contacting and limiting the sliding of the sliding assembly 3 along the second adjustment interval 52.
[0032] In the present embodiment, the unfolding and folding actions of the limiting block and the sliding assembly achieve the precise control of the headrest height adjustment range. The working principle is that when the limiting block is unfolded, the top thereof abuts against the top of the sliding groove, thereby preventing the sliding assembly from entering the second adjustment interval, ensuring that the headrest can only move within the first adjustment interval to adapt to the safety requirements of children in a lower age group; when the limiting block is folded, the bottom thereof contacts the top of the sliding groove, thereby removing the limitation on the sliding assembly entering the second adjustment interval, so that the headrest can be adjusted to a higher position to meet the requirements of children in a larger age group. The beneficial effects of this design are that it effectively avoids the problem of increasing the risk of children riding in the vehicle due to misoperation of the headrest height exceeding the adaptation range, and at the same time provides intuitive operation feedback for the user, thereby improving the safety and ease of use of the product.
[0033] Further, as a preferred embodiment of the present scheme but not limited, the headrest 1 is provided with a through hole 11 for the safety belt to pass through from the rear, and the backrest 2 is provided with an open groove 21 corresponding to the through hole 11 on the moving path of the first adjustment interval 51, and the top of the limiting block 4 corresponds to the through hole 11 when the limiting block 4 is unfolded relative to the sliding assembly 3.
[0034] In the present embodiment, since children aged 0-3 use five-point safety belts, and for the safety of children, children over 3 years old should sit on the safety seat and use the safety belt provided in the vehicle, and no longer use the five-point safety belt; when the limiting block 4 is unfolded relative to the sliding assembly 3, the top thereof corresponds to the through hole 11, and this positional relationship enables the safety belt to smoothly pass through the through hole 11 and the open groove 21 when adjusting the height of the headrest within the first adjustment interval 51, without being disturbed by the limiting block 4, thereby ensuring the normal use of the safety belt. At the same time, this design further emphasizes the role of the limiting block 4 in limiting the headrest from entering the second adjustment interval 52, because when the top of the limiting block 4 abuts against the top of the sliding groove, the through hole also reaches the top limit position of the sliding groove, reminding the user that the current height adjustment range of the headrest is suitable for a lower age group, and when the limiting block is folded, the five-point safety belt is removed, and the safety belt system provided in the vehicle is used. In addition, the through hole can be replaced by a circular or other shaped hole to adapt to the design of different safety belts, or a guide groove or a roller can be provided in the open groove 21 to reduce the friction between the safety belt and the open groove 21, thereby further improving the smoothness of the adjustment.
[0035] Further, as a preferred embodiment of the present scheme but not limited, it further comprises a release lock mechanism 6 for limiting or releasing the sliding movement of the sliding assembly 3 along the sliding groove 5.
[0036] In this embodiment, the release lock mechanism is added to limit or release the movement of the sliding assembly along the sliding groove. The working principle is to precisely control the position of the sliding assembly by the release lock mechanism. When the release lock mechanism is in the locked state, the sliding assembly is fixed at a specific height position, preventing accidental movement of the headrest due to external force or misoperation. When the release lock mechanism is unlocked, the sliding assembly can freely adjust the height along the sliding groove, thereby achieving flexible positioning of the headrest. The beneficial effect of this design is to significantly improve the operation convenience and safety of the child safety seat, avoiding the risk of protection failure due to accidental changes in the headrest height, while providing users with a more intuitive and reliable adjustment experience.
[0037] Further, as a preferred embodiment of the present scheme but not limited, the release lock mechanism 6 comprises a linkage 61 slidingly connected with the headrest 1, a release lock piece 62 slidingly matched with the linkage 61, and a spring 63 provided between the linkage 61 and the headrest 1. The linkage 61 is provided with a release lock slot hole 611 for slidingly matching the release lock piece 62 to abut or separate from the sliding groove 5.
[0038] In this embodiment, the linkage is slidingly connected with the headrest and provides a restoring force through the spring. When the user operates the linkage, the release lock slot hole on the linkage pushes the release lock piece to abut or separate from the sliding groove, thereby realizing the locking or unlocking function. In the locked state, the release lock piece abuts the sliding groove to limit the movement of the sliding assembly, ensuring the fixation of the headrest height. In the unlocked state, the release lock piece separates from the sliding groove, and the sliding assembly can freely adjust the height. At the same time, the elastic force of the spring makes the linkage automatically reset after operation, further improving the convenience and reliability of the operation.
[0039] Further, as a preferred embodiment of the present scheme but not limited, the release lock slot hole 611 is inclined from the sliding groove 5 to a direction away from the sliding groove 5 from top to bottom.
[0040] In this embodiment, the inclined slot hole structure guides the release lock piece to produce a specific displacement trajectory when the linkage moves. When the linkage is pulled, the inclination angle of the release lock slot hole makes the release lock piece gradually separate from the sliding groove, thereby realizing the unlocking function. When the linkage is reset, the inclined design of the release lock slot hole can guide the release lock piece to abut the sliding groove again, restoring the locked state. The advantage mainly lies in that when the external force is applied to the linkage for unlocking, it is in the same direction as the external force for lifting the headrest, which is more in line with the operation habit of users, improving the convenience of operation.
[0041] Further, as a preferred embodiment of the present scheme but not limited, the sliding groove 5 is provided with a plurality of limiting grooves 53 for the locking piece 62 to be clamped into, so as to limit the relative sliding of the sliding assembly 3 along the vertical direction.
[0042] In the embodiment, the stability of the headrest height adjustment is improved, and the safety hidden danger caused by the random sliding of the sliding assembly is avoided through the design of the segmented limiting groove, at the same time, a more intuitive and reliable height adjustment experience is provided for the user, and accidental movement caused by the activity of children or the bumping of the vehicle is not easy to occur, and the riding safety is enhanced.
[0043] Further, as a preferred embodiment of the present scheme but not limited, pulling the linkage 61, the release slot hole 611 pushes the locking piece 62 out of the limiting groove 53, so as to release the limitation of the sliding of the sliding assembly 3 along the sliding groove 5, at the same time, the elastic piece 63 is compressed under stress, the linkage 61 is reset under the elastic force of the elastic piece 63, the release slot hole 611 pushes the locking piece 62 into the limiting groove 53, so as to limit the sliding of the sliding assembly 3 along the sliding groove 5.
[0044] Further, as a preferred embodiment of the present scheme but not limited, the bottom of the linkage 61 is provided with a positioning pin 612 for connecting the linkage 61 and the headrest 1, and the linkage 61 is provided with a gap groove 613 for the positioning pin 612 to move.
[0045] In the embodiment, the positioning pin connects the bottom of the linkage and the headrest together, and the gap groove provides a moving space for the positioning pin, so that the linkage can slide or swing within a certain range, thereby realizing the operation function of the release mechanism; when the user pulls the linkage, the positioning pin moves along the gap groove, which not only ensures the stable movement track of the linkage, but also prevents it from being separated from the headrest, thereby ensuring the reliability and operation consistency of the entire release mechanism.
[0046] Further, as a preferred embodiment of the present scheme but not limited, the sliding assembly 3 is provided with a protrusion 31 for the locking piece 62 to be separated from the limiting groove 53, and the limiting block 4 is provided with a recess 41 for the protrusion 31 to be arranged and embedded when the limiting block 4 is folded relative to the sliding assembly 3.
[0047] Further, as a preferred embodiment of the present scheme but not limited, the headrest 1 is provided with a handle 12 for assisting lifting, the linkage 61 is provided with a push block 614 for assisting pulling, the handle 12 is provided with a containing space 121 for the push block 614 to be embedded, and after the push block 614 fully enters the containing space 121, the release mechanism 6 releases the limitation of the sliding of the sliding assembly 3 along the sliding groove 5.
[0048] In this embodiment, when the user operates the handle to lift the headrest, the push block gradually embeds into the accommodating space on the handle along with the movement of the linkage. When the push block completely enters the accommodating space, the release mechanism releases the restriction on the sliding assembly, thereby allowing the headrest to be freely adjusted in height along the sliding groove. This design integrates the lifting of the headrest and the unlocking of the height adjustment function into one coherent operation step, reducing the complexity of the user's operation. It improves the convenience and operation efficiency of the headrest height adjustment, and also avoids safety hazards caused by misoperation through optimization of the mechanical structure, while providing the user with an intuitive and efficient operation experience.
[0049] Further, as a preferred embodiment of the present scheme but not limited, the headrest 1 and the backrest are provided with a release mechanism 6 for limiting or releasing the limitation of the headrest 1 relative to the seat body sliding, a release lock 62 cooperating with the release mechanism 6, and a plurality of limiting grooves 53 provided on the sliding groove 5 for the release lock 62 to be clamped in to limit the sliding assembly 3 relative to the sliding in the vertical direction; wherein the release lock 62 is located between the headrest 1 and the sliding assembly 3.
[0050] Further, as a preferred embodiment of the present scheme but not limited, a safety belt for infants is provided between the headrest and the backrest, and when the headrest 1 can be slid upward along the height corresponding to the second adjustment interval 52, the safety belt is detached from the headrest.
[0051] The working principle of the present embodiment is as follows:
[0052] The headrest height adjustment limiting mechanism and child carrier of the present application use the limiting block to limit or release the limitation of the sliding assembly along the second adjustment interval. When the child is in a lower age group, the limiting block limits the sliding assembly from entering the second adjustment interval, thereby avoiding the headrest being adjusted to a height that is not suitable for the age group, and reducing the risk coefficient of the child riding. When the child is suitable for the height of the second adjustment interval, the limiting block can be operated to release the limitation of the sliding assembly, so that the headrest can be adjusted to a higher position, realizing the interval control of the headrest height adjustment. This process serves as a prompt, effectively avoiding the user from misoperating the headrest to a height position that is not suitable for the age group of the child, thereby reducing the safety risk of the child riding and improving the use safety and reliability of the child safety seat.
[0053] The above is an embodiment provided in combination with specific content, and it is not intended to limit the specific implementation of the present application to these descriptions. Any approximation to the method structure of the present application, or any technical deduction or replacement made on the basis of the concept of the present application, should be considered as the protection scope of the present application.
Claims
1. A headrest height adjustment limiter mechanism, characterized by, The headrest (1) is connected with a sliding assembly (3) which slides relative to the backrest (2), and a limiting block (4) is connected with the sliding assembly (3), the backrest (2) is provided with a sliding groove (5) for the sliding assembly (3) to slide in the vertical direction, the sliding groove (5) comprises a first adjustment interval (51) and a second adjustment interval (52), and the limiting block (4) is used for limiting or releasing the sliding of the sliding assembly (3) along the second adjustment interval (52).
2. The headrest height adjustment limit mechanism of claim 1, wherein The limiting block (4) is unfolded relative to the sliding assembly (3), the top of the limiting block (4) abuts against the top of the sliding groove (5), and then the sliding of the sliding assembly (3) along the second adjustment interval (52) is limited; the limiting block (4) is folded relative to the sliding assembly (3), and the sliding assembly (3) slides along the second adjustment interval (52).
3. The headrest height adjustment limiting mechanism according to claim 1 or 2, characterized in that The headrest (1) is provided with a through hole (11) through which a safety belt is threaded from the back, the backrest (2) is provided with an open groove (21) corresponding to the through hole (11) on the moving path of the first adjustment interval (51), and the top of the limiting block (4) corresponds to the through hole (11) when the limiting block (4) is unfolded relative to the sliding assembly (3).
4. The headrest height adjustment limit mechanism of claim 1, wherein The release lock mechanism (6) for limiting or releasing the sliding of the sliding assembly (3) along the sliding groove (5) is further included, and a release lock piece (62) is matched with the release lock mechanism (6); a plurality of limiting grooves (53) are arranged on the sliding groove (5), and the release lock piece (62) is clamped into the limiting grooves (53) to limit the sliding of the sliding assembly (3) in the vertical direction.
5. The headrest height adjustment limit mechanism of claim 4, wherein The release lock mechanism (6) comprises a linkage (61) which is slidingly connected with the headrest (1) and is elastically biased; The linkage (61) is provided with a release lock groove hole (611) for the sliding cooperation of the release lock piece (62) to abut against or be separated from the sliding groove (5); When the linkage (61) is pulled, the release lock groove hole (611) pushes the release lock piece (62) to be separated from the limiting groove (53), so as to release the limitation of the sliding of the sliding assembly (3) along the sliding groove (5).
6. The headrest height adjustment limit mechanism of claim 2, wherein The sliding assembly (3) is provided with a convex part (31), and the limiting block (4) is provided with a concave part (41) for the arrangement of the convex part (31) and the embedding of the convex part (31) when the limiting block (4) is folded relative to the sliding assembly (3).
7. A child carrier with headrest height adjustment limiting mechanism, comprising a seat body, a headrest (1); the seat body comprises a backrest (2), and the headrest (1) is slidingly arranged along the backrest height direction; characterized in that, The headrest height adjustment limiting mechanism comprises a limiting block (4) movably connected with the headrest (1), the backrest (2) is provided with a sliding groove (5) for the limiting block (4) to slide in the vertical direction, the sliding groove (5) comprises a first adjustment interval (51) and a second adjustment interval (52), and the limiting block (4) is used for limiting or releasing the height of the headrest (1) corresponding to the second adjustment interval (52) to slide; the limiting block (4) can be switched between a limiting position and a releasing position relative to the headrest (1); when the limiting block (4) is in the limiting position, the headrest (1) can only slide in the height corresponding to the first adjustment interval (51); when the limiting block (4) is in the releasing position, the headrest (1) can slide upwards in the height corresponding to the second adjustment interval (52).
8. The child carrier having a headrest height adjustment limiter mechanism according to claim 7, wherein The limiting block (4) comprises a first limiting part (42), when the limiting block (4) is in the limiting position, the first limiting part (42) abuts against or interferes with the edge of the sliding groove (5), thereby limiting the headrest (1) to slide in the height corresponding to the second adjustment interval (52); when the limiting block (4) is in the releasing position, the first limiting part (42) is away from the top edge of the sliding groove (5).
9. The child carrier having a headrest height adjustment limiter mechanism according to claim 8, wherein The limiting block (4) is hinged to the headrest (1); the limiting block (4) comprises a second limiting part (43) arranged above and below the first limiting part (42); when the limiting block (4) is in the limiting position, the first limiting part (42) is above the second limiting part (43); when the limiting block (4) is in the releasing position, the first limiting part (42) is below the second limiting part (43), and the headrest (1) can slide upwards along the second adjustment interval (52) until the second limiting part (43) abuts against or interferes with the edge of the sliding groove (5).
10. The child carrier having a headrest height adjustment limiter mechanism according to claim 7, wherein The headrest (1) comprises a sliding assembly (3) movably connected with the limiting block (4) and sliding in the vertical direction of the sliding groove (5); when the limiting block (4) is in the limiting position, the limiting block (4) is unfolded relative to the sliding assembly (3), and the sliding assembly (3) can only slide along the first adjustment interval (51); when the limiting block (4) is in the releasing position, the limiting block (4) partially or entirely overlaps with the sliding assembly (3), and the sliding assembly (3) can slide upwards along the second adjustment interval (52).