Safety belt assembly, child carrier, and child safety seat with harness buffer mechanism

Abstract

The present disclosure a harness assembly for a child carrier, the child carrier further comprising a carrier body, characterized in that the harness assembly comprises: a shoulder belt set having a first end and a second end; a crotch belt set having a third end and a fourth end, the third end being connected to the carrier body, and the fourth end being removably connected to the first end; an adjustment belt having a fifth end and a sixth end, the fifth end being connected to the carrier body, and the sixth end being connected to the second end, the adjustment belt being switchable between a tightened state and a relaxed state; and a self-locking mechanism disposed between the fifth end and the sixth end; wherein the adjustment belt passes through the self-locking mechanism to form a linkage with the self-locking mechanism, when the fourth end is connected to the first end and the adjustment belt is in the tightened state, the shoulder belt set is in a fully tightened state, and the self-locking mechanism locks the adjustment belt to restrict movement of the adjustment belt and the shoulder belt set. The present disclosure discloses a child carrier, comprising a carrier body and the harness assembly, and a child safety seat with harness buffer mechanism.

Description

SAFETY BELT ASSEMBLY, CHILD CARRIER, AND CHILD SAFETY SEAT WITH HARNESS BUFFER MECHANISMTECHNICAL FIELD

[0001] The present disclosure relates to a harness assembly and a child carrier with the harness assembly.The present disclosure further relates to a child safety seat with harness buffer mechanism.BACKGROUND

[0002] A child safety seat is designed specifically for children of varying weights (or age groups) and is installed within a vehicle to significantly enhance the safety of children while riding. The child safety seat is a seat fixed on the vehicle seat, as an auxiliary equipment with restraining functions, primarily intended for a young child to ride in and to restrain the child in the event of an accidental collision, thereby ensuring the safety of the child.

[0003] At present, a child carrier, such as a child safety seat, is generally equipped with a harness assembly. After a child is seated in the child carrier, the harness assembly may secure the child to the child carrier to ensure safe travel. However, the existing harness assembly often cannot be locked after being pulled tight to probably make the harness assembly to be further tightened. This can cause the child to be strapped too tightly and affect the comfort of the child as riding. Moreover, in the event of an impact, an overly tight harness assembly may also cause secondary injury to the child.SUMMARY

[0004] According to a first aspect of the present disclosure, a harness length adjustment device for a child safety seat is proposed, including: an adjustment belt having a connection section located inside the child safety seat and anadjustment section extending out of the child safety seat, the connection section being connected to the harness; a locking member, which is provided on the child safety seat and sleeved at the adjustment section of the adjustment belt to operably lock the adjustment belt; and a vertical drum on a side of the adjustment section of the adjustment belt in a width direction, wherein the vertical drum is closer to an end of the adjustment section than the locking member.

[0005] According to an embodiment of the present disclosure, the vertical drum includes a first vertical drum and a second vertical drum, which are respectively located on both sides of the adjustment belt in the width direction, and a spacing between the first vertical drum and the second vertical drum is greater than a width of the adjustment belt.

[0006] According to the present disclosure, a child safety seat is also proposed, including: a seat portion having an opening that includes a bottom wall and side walls perpendicular to the bottom wall; a harness; and a harness length adjustment device provided at the opening, wherein the harness length adjustment device includes: an adjustment belt having a connection section arranged inside the seat portion and an adjustment section arranged outside the seat portion, the connection section being connected to the harness, the adjustment section extending out of the seat portion through the opening, an edge of the adjustment section being opposite to a side wall of the opening; and a vertical drum arranged between the side wall and the adjustment belt.

[0007] According to an embodiment of the present disclosure, the vertical drum includes a first vertical drum and a second vertical drum, which are respectively located on both sides of the adjustment belt in a width direction, and a spacing between the first vertical drum and the second vertical drum is greater than a width of the adjustment belt.

[0008] According to an embodiment of the present disclosure, the harness length adjustment device further includes a locking member, which is arranged at an opening and sleeved at the adjustment section of the adjustment belt, tooperably lock the adjustment belt; wherein the vertical drum is closer to an end of the adjustment section than the locking member.

[0009] According to an embodiment of the present disclosure, the locking member includes a securing seat secured at an opening of the seat portion, and a locking block that is pivoted on the securing seat and has an unlocking part for unlocking. When the adjustment belt is locked by the locking member, the adjustment belt is clamped between the securing seat and the locking block.

[0010] According to an embodiment of the present disclosure, the harness length adjustment device further includes a cover secured at the opening to cover the vertical drum; the cover and the opening are configured to form an adjustment belt hole and an unlocking hole; the adjustment belt hole and the unlocking hole are spaced apart from each other. The adjustment section passes through the adjustment belt hole. The unlocking part is exposed outside the cover through the unlocking hole.

[0011] According to an embodiment of the present disclosure, the cover includes an outlet and a covering portion connected to the outlet. A height of the outlet is lower than a height of the covering portion. The outlet covers the vertical drum. The covering portion partially covers the locking block. The covering portion forms a clearance space for pivoting movement of the locking block.

[0012] According to an embodiment of the present disclosure, the vertical drum is pivotally connected to at least one of the seat portion and the cover via a vertical rivet.[ | According to an embodiment of the present disclosure, the harness length adjustment device further includes a horizontal drum. The horizontal drum extends in a width direction of the adjustment section. The horizontal drum and the bottom wall are on opposite sides of the adjustment belt in a thickness direction. The horizontal drum is arranged between the vertical drum and the locking member. A projection of the horizontal drum on the side wall is partially overlapped with a projection of the vertical drum on the side wall. A length of the horizontal drum is smaller than a spacing between a rotation axisof the first vertical drum and a rotation axis of the second vertical drum.

[0014] According to a second aspect of the present disclosure, a child safety seat is proposed, including: a seat body; a harness buffer mechanism disposed inside the seat body; and a harness assembly including a fixed end secured to the seat body and a free end, the free end being threaded through the harness buffer mechanism, wherein the harness buffer mechanism includes: a securing bracket securely connected to the seat body; a buffer member movably disposed on the securing bracket and having a first position and a second position, the harness assembly being configured to partially surround the buffer member; an elastic member disposed between the securing bracket and the buffer member, or between the seat body and the buffer member, and biased against the buffer member towards the first position; and a guide disposed at the securing bracket and used to guide the harness assembly through the direction of the harness buffer mechanism.

[0015] According to an embodiment, a length of the harness assembly in contact with the buffer member when the buffer member is in the first position is greater than a length of the harness assembly in contact with the buffer member when the buffer member is in the second position.[ | According to an embodiment, the seat body includes a backrest portion and a seat portion, the harness buffer mechanism being disposed in the seat portion. The seat body further includes a harness length adjustment structure, the harness length adjustment structure is disposed in the seat portion, and the free end of the harness assembly is operably locked to the harness length adjustment structure.

[0017] According to an embodiment, the harness assembly includes two shoulder belts and one adjustment belt, the adjustment belt is threaded through the harness buffer mechanism, each of the shoulder belts has one end fixed to the seat body and the other end connected to the adjustment belt inside the seat body.

[0018] According to an embodiment, the securing bracket is provided with abuffer slot, the buffer member is slidably embedded in the buffer slot; the harness buffer mechanism further includes a limiting pin that slides in the buffer slot and supports displacement of the buffer member.[ | According to an embodiment, the buffer slot is perpendicular to the adjustment belt, for buffering the adjustment belt by means of a force from the vertical direction.

[0020] According to an embodiment, the guide is configured as two guide rods on both sides of the buffer member along the adjustment belt, the guide rods are rotatably supported in the securing bracket, for guiding the adjustment belt, the guide rods are configured such that a direction in which the adjustment belt is threaded into the harness buffer mechanism is parallel to a direction in which the adjustment belt is threaded out of the harness buffer mechanism.

[0021] According to an embodiment, the elastic member is a compression spring or a tension spring.

[0022] According to an embodiment, the buffer member is configured as an arc on one side facing the adjustment belt, has a width corresponding to the width of the adjustment belt, and abuts against the elastic member on the other side facing away from the adjustment belt.

[0023] According to an embodiment, the securing bracket has an upper wall and two side walls perpendicular to the upper wall, the side wall is shaped as an inverted trident, having one middle portion provided as a buffer support that has the buffer slot for pivotally supporting the buffer member, two sides respectively provided with guide rod supports for pivotally supporting the guide rods.

[0024] According to an embodiment, the buffer slot is parallel to the adjustment belt, for buffering force of the adjustment belt in a horizontal direction.

[0025] According to an embodiment, the guide is configured as a guide rod, the guide rod is rotatably supported in the securing bracket, for changing a movement direction of the adjustment belt.

[0026] According to an embodiment, the harness buffer mechanism includes asecuring pin, wherein

[0027] the buffer member is configured as a buffer rod and the elastic member is a tension spring, two ends of the tension spring are fixed to the securing pin and the buffer rod, respectively.

[0028] According to an embodiment, the securing bracket has an upper wall and two side walls perpendicular to the upper wall, a securing pin support is arranged on one side of the side wall, for pivotally supporting the securing pin, the securing pin support is configured to form a notch on the side wall, an edge of the notch is in contact with the bottom wall and the rear wall of the opening portion of the seat body; the buffer slot and a perforation for inserting and securing the guide rod are arranged on the other side of the side wall, the buffer slot has a height as same as the securing pin, the perforation is at a height of the bottom wall.

[0020] According to an embodiment, a pin head of the securing pin and a rod head of the buffer rod protrude from both sides of the side walls of the securing bracket, for securing a tension spring on two outer sides of the securing bracket, respectively.

[0030] According to an embodiment, the backrest portion is provided with a reinforcement rod, and each of the shoulder belts is configured to pass over the reinforcement rod from an upper portion of the backrest portion and then connect to the adjustment belt.[ | According to an embodiment, The guide is arranged between the first position and the second position in the extending direction of the harness assembly, and the contact length between the harness assembly and the buffer member when the buffer member is located at the first position is twice as long as that when the buffer member is located at the second position.

[0032] On the basis of this, according to a third aspect of this disclosure, it is necessary to provide a harness assembly and a child carrier, wherein the harness assembly can be automatically locked after being tightened in place, thereby avoiding the harness assembly from being overly tightened.[ | According to one aspect of the present disclosure, a harness assembly for a child carrier with a carrier body is proposed, including:

[0034] a shoulder belt set having a first end and a second end;

[0035] a crotch belt set having a third end and a fourth end, the third end being connected to the carrier body, and the fourth end being removably connected to the first end;[ | an adjustment belt having a fifth end and a sixth end, the fifth end being connected to the carrier body, the sixth end being connected to the second end, and the adjustment belt being switchable between a tightened state and a relaxed state; and[ | a self-locking mechanism disposed between the fifth end and the sixth end;

[0038] wherein the adjustment belt passes through the self-locking mechanism to form a linkage with the self-locking mechanism, when the fourth end is connected to the first end and the adjustment belt is in the tightened state, the shoulder belt set is in a fully tightened state, and the self-locking mechanism locks the adjustment belt to restrict movement of the adjustment belt and the shoulder belt set.[ | In the above-described harness assembly, the third end of the crotch belt set is connected to the carrier body, the fourth end of the crotch belt set is connected to the first end of the shoulder belt set, and the second end of the shoulder belt set is connected to the sixth end of the adjustment belt. The fifth end of the shoulder belt set is connected to the carrier body, thereby forming a restraint structure that can secure the child to the carrier body. A self-locking mechanism is provided between the third end and the fourth end of the adjustment belt, and the adjustment belt passes through the self-locking mechanism to form a linkage with the self-locking mechanism. When the first end of the shoulder belt set is connected to the fourth end of the crotch belt set and the adjustment belt is in a tightened state, the shoulder belt set is also in a fully tightened state. The self-locking mechanism can lock the adjustment beltto restrict the movement of the adjustment belt and the shoulder belt set, to prevent the shoulder belt set from being further tightened, thereby avoiding the harness assembly from being overly tightened, which may affect the comfort of the child or cause other safety hazards.

[0040] In one of the embodiments, the self-locking mechanism includes a pulling gap, the adjustment belt being at least partially disposed within the pulling gap, when the fourth end is connected to the first end and the adjustment belt is in the tightened state, the pulling gap becomes small to restrict the movement of the adjustment belt.

[0041] In one of the embodiments, the self-locking mechanism includes:

[0042] a limiting portion secured to the carrier body; and

[0043] a locking member movable between a first position close to the limiting portion and a second position away from the limiting portion;

[0044] wherein a pulling gap is formed between the locking member and the limiting portion, and the adjustment belt is at least partially disposed within the pulling gap.

[0045] In one of the embodiments, the crotch belt set is switchable between the tightened state and the relaxed state; when the crotch belt set is switched from the relaxed state to the tightened state, the crotch belt set is in linkage with the locking member from the second position to the first position.

[0046] In one of the embodiments, the crotch belt set is switchable between the tightened state and the relaxed state; the self-locking mechanism further includes:

[0047] a driving member movable relative to the limiting portion and drivingly connected to the crotch belt set, the locking member being mounted on the driving member;

[0048] wherein when the crotch belt set is switched from the relaxed state to the tightened state, the crotch belt set is in linkage with the driving member to move such that the driving member moves the locking member to the first position.[ | In one of the embodiments, the harness assembly further includes:

[0050] a rotating base rotatably disposed on the carrier body and connected to the third end, the rotating base being rotatable between a first rotation position and a second rotation position;

[0051] wherein when the crotch belt set is in the tightened state, the rotating base is in the first rotation position to move the locking member to the first position.

[0052] In one of the embodiments, the self-locking mechanism further includes:

[0053] a first resetting member biasing the driving member to move the locking member towards the second position.

[0054] In one of the embodiments, the self-locking mechanism further includes:

[0055] a pushing member movable between a third position and a fourth position, the pushing member having a winding end, the adjustment belt being at least partially wound on the winding end;[5b] wherein movement directions of the locking member and the pushing member intersect, when the adjustment belt is switched from the relaxed state to the tightened state, the adjustment belt pushes and presses the winding end to move the pushing member from the fourth position to the third position and move the locking member to the first position.[5’’] In one of the embodiments, the self-locking mechanism further includes:

[0058] a driving member movable relative to the limiting portion, the locking member being mounted on the driving member; and

[0050] a pushing member movable relative to the carrier body between the third position and the fourth position, the pushing member having a pushing portion abutting against the driving member;

[0060] wherein the pushing member moves from the fourth position to the third position, and the pushing portion pushes the driving member to move the locking member to the first position.[< | In one of the embodiments, the self-locking mechanism further includes:

[0062] a first resetting member biasing the driving member to move the lockingmember towards the second position.[i | In one of the embodiments, the self-locking mechanism further includes:

[0064] a second resetting member biasing the pushing member towards the fourth position.

[0005] In one of the embodiments, the harness assembly further includes:

[0066] a mounting base secured to the carrier body and having a first mounting slot;[' | wherein the locking member is disposed within the first mounting slot, the sixth end, after bypassing the locking member, passes through the pulling gap and exits the first mounting slot, then winds around the winding end after bypassing an outer wall of the mounting base, and finally connects to the second end.

[0068] In one of the embodiments, the self-locking mechanism further includes a first guide rod and a second guide rod secured to the carrier body, the first guide rod and the second guide rod are respectively positioned on both sides of the pushing member; the sixth end passes through the outer wall of the mounting base, and then winds around the winding end by bypassing the first guide rod, and further winds around the second guide rod to connect with the second end.

[0069] In one of the embodiments, the self-locking mechanism further includes: [ | a limiting pin; and

[0071] a mounting base secured to the carrier body and having a first mounting slot, the mounting base further having a through-hole communicated with the first mounting slot;

[0072] wherein at least a portion of the pushing member is positioned within the first mounting slot, and the pushing member is provided with a through-slot extending in a direction from the third position to the fourth position, the limiting pin passes through a through-hole and the through-slot to restrict the movement of the pushing member.[ | According to the other aspect of the present disclosure, a child carrier isfurther proposed, including a carrier body and the harness assembly as above described.BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Fig. 1 shows a perspective view and a partial enlarged view of a child safety seat according to a first aspect of the present disclosure;

[0075] Fig. 2 shows a perspective view and a partial enlarged view of a child safety seat according to an embodiment of the first aspect of the present disclosure;

[0076] Fig. 3 shows a perspective view of a cover according to an embodiment of the first aspect of the present disclosure;

[0077] Fig. 4 shows a perspective view and a partial enlarged view of the child safety seat according to an embodiment of the first aspect of the present disclosure;

[0078] Fig. 5 shows a lateral sectional view of the harness length adjustment structure according to an embodiment of the first aspect of the present disclosure;

[0079] Fig. 6 shows a perspective view and a partial enlarged view of a child safety seat according to another embodiment of the first aspect of the present disclosure; and

[0080] Fig. 7 shows a lateral sectional view of a harness length adjustment structure according to another embodiment of the present disclosure.

[0081] Fig. 8 shows a perspective view of a child safety seat according to an embodiment of a second aspect of the present disclosure;

[0082] Fig. 9A shows a sectional perspective view and a partial enlarged view of the child safety seat according to an embodiment of the second aspect of the present disclosure;

[0083] Fig. 9B shows a sectional perspective view and a partial enlarged view of the child safety seat according to an embodiment of the second aspect of the present disclosure;

[0084] Fig. 10 shows a side sectional view and a partial enlarged view of the child safety seat according to an embodiment of the second aspect of the present disclosure;

[0085] Fig. 11 shows a sectional view and a partial enlarged view of the child safety seat according to an embodiment of the second aspect of the present disclosure;

[0086] Fig. 12 shows a sectional view and a partial enlarged view of the child safety seat according to an embodiment of the second aspect of the present disclosure;

[0087] Fig. 13 shows a harness buffer mechanism according to an embodiment of the second aspect of the present disclosure;

[0088] Fig. 14 shows a harness buffer mechanism according to an embodiment of the second aspect of the present disclosure;

[0089] Fig. 15 shows an exploded view and a partial enlarged view of the child safety seat according to an embodiment of the second aspect of the present disclosure;

[0090] Fig. 16 shows a perspective view from below and a partial enlarged view of a child safety seat according to another embodiment of the second aspect of the present disclosure;[ | Fig. 17 shows a perspective view from below and a partial enlarged view of a child safety seat according to another embodiment of the second aspect of the present disclosure;

[0092] Fig. 18 shows a sectional view and a partial enlarged view of the child safety seat according to another embodiment of the second aspect of the present disclosure;[ | Fig. 19 shows a perspective view from below and a partial enlarged view of the child safety seat according to another embodiment of the second aspect of the present disclosure;

[0094] Fig. 20 shows a sectional view and a partial enlarged view of the child safety seat according to another embodiment of the second aspect of thepresent disclosure;

[0095] Fig. 21 shows a harness buffer mechanism according to another embodiment of the second aspect of the present disclosure;

[0096] Fig. 22 shows a harness buffer mechanism according to another embodiment of the second aspect of the present disclosure; and

[0097] Fig. 23 shows a perspective view from below and a partial enlarged view of the child safety seat according to another embodiment of the second aspect of the present disclosure.

[0098] Fig. 24 is a structural schematic view of a child carrier according to a first embodiment of a third aspect of the present disclosure;

[0099] Fig. 25 is a 3A-3A sectional view and an enlarged view of a portion enclosed by a dashed line in Fig. 24, showing that an adjustment belt is in a relaxed state;

[0100] Fig. 26 is another 3A-3A sectional view and an enlarged view of a portion enclosed by a dashed line in Fig. 24, showing that an adjustment belt is in a tightened state;

[0101] Fig. 27 is a structural schematic view of an adjustment belt and a self-locking mechanism in the child carrier of Fig. 24;

[0102] Fig. 28 is a 3B-3B sectional view of Fig. 27;

[0103] Fig. 29 is an exploded view of Fig. 27; Fig. 30 is a sectional view of a child carrier according to another embodiment of the third aspect of the present disclosure and an enlarged view of a portion enclosed by the dashed line, showing the adjustment belt in a relaxed state;

[0105] Fig. 31 is another sectional view of the child carrier shown in Fig. 30 and an enlarged view of a portion enclosed by the dashed line, showing that the adjustment belt is in a tightened state; Fig. 32 is a structural schematic view of a shoulder belt buckle, a crotch belt set, and a self-locking mechanism in the child carrier shown in Fig. 30;sectional view of Fig. 32;

[0108] Fig. 34 is an exploded view of Fig. 32.The list of reference numerals is as follows:11 A, 11 child safety seat1100A, 1100 harness length adjustment structure1110A, 1110 locking block1111 locking part1112 unlocking part1113 pivot1120A, 1120 securing seat1121A, 1121 securing hole1122 A, 1122 outlet1123A, 1123 support bracket1130 cover1131 covering portion11311 covering portion upper wall11312 covering portion side wall1132 outlet portion11321 outlet portion upper wall11322 outlet portion side wall1133 perforation1134 recess1135 perforation1136 connecting boss1137 notch1138 rear wall1200A, 1200 seat portion1210A, 1210 opening portion1211 connecting slot1212 bottom wall1213 rear wall1214 side wall1300A, 1300 backrest portion1400A, 1400 headrest portion1500A, 1500 side wing1600A, 1600 harness assembly1610A, 1610 shoulder belt1620A, 1620 waist belt1630A, 1630 adjustment belt1631 adjustment section1632 connection section1700 buckle1710 connecting strap1810 vertical drum1811 vertical rivet1820 horizontal drum1821 horizontal rivet12A base1A-1A section line21 seat body2100 harness length adjustment structure2110 locking block2120 securing seat2130 cover2200 seat portion2210 opening portion2212 bottom wall2213 rear wall2214 side wall2215 adjustment belt inlet2216 adjustment belt outlet2220 mounting portion2221 mounting hole2300 backrest portion2310 reinforcement rod2400 headrest portion2500 side wing2600 harness assembly2610 shoulder belt2630 adjustment belt2631 bending section2640 insert2700 buckle2710 connecting strap2800 harness buffer mechanism2810 securing bracket2811 upper wall2812 side wall2813 securing hole2814 buffer support2815 guide rod support2816 buffer slot2817 perforation2818 securing pin support2819 notch2820 buffer member, buffer rod2821 rod head2830 guide, guide rod2831 rod head2840 elastic member2850 fastener2860 limiting pin2861 pin head2870 securing pin2871 pin head21-21 sectional line2II-2II sectional line310 carrier body; 311 seat portion; 311a receiving chamber; 311b opening; 312 backrest portion; 313 seating space; 320 harness assembly;3100 shoulder belt set; 3110 first end; 3120 shoulder belt body; 3130 shoulder belt buckle; 3200 crotch belt set; 3210 third end; 3220 fourth end; 3230 crotch belt body; 3240 crotch belt buckle; 3300 adjustment belt; 3310 fifth end; 3400 self-locking mechanism; 3410 mounting base;3411 winding portion; 34111 outer wall; 34112 first limiting rod; 34113 first passage hole; 3412 mounting portion; 34121 first mounting slot;34122 passage hole; 3420 drive; 3421 drive body; 34211 third mounting slot; 334212 mounting recess; 34213 first sleeve boss; 34214 cooperating slope; 34215 cooperating plane; 3422 driving boss; 3430 locking part; 3431 locking body; 3432 mounting protrusion; 33440 securing bracket; 441 frame body; 34411 through-slot; 34412 limiting portion; 3442 first securing portion; 3443 second securing portion; 3451 first resetting member; 3452 second resetting member; 3460 pushing member; 3461 pressing portion; 34611 pushing slope; 34612 pushing plane; 3462 winding end; 34621 winding face; 3463 second limiting rod;3464 second passage hole; 3465 through-slot; 3466 second mounting slot; 3467 second sleeve boss; 3471 first guide rod; 3472 second guide rod; 3473 limiting pin; 3500 rotating base; 3510 rotating disk; 3511 pushing boss; 3520 connecting rod; 3600 pin shaft; 3700 length adjustment mechanism; 3800 securing seat; 3101 pulling gap.DETAILED DESCRIPTION

[0109] Although the present disclosure is illustrated and described with reference tothe special embodiments, the present disclosure should not be limited to the details shown. Rather, various modifications can be made to these details within a scope of equivalent variations of the claims without departing from the present disclosure.

[0110] The directional descriptions of “front”, “rear”, “up”, “down” etc., herein are merely for ease of understanding. The present disclosure is not limited to these directions but can be adjusted according to actual circumstances. Although the present disclosure has been described with reference to the typical embodiments, the terms are illustrative and exemplary, rather than restrictive.

[0111] To adjust a length of a harness for a child safety seat, the child safety seat typically includes a harness length adjustment structure (harness adjustment lock) at the front of the seat. An adjustment belt of a safety belt assembly may pass through the harness length adjustment structure to regulate the length of the harness assembly. However, the child safety seats on the market often experience friction between the adjustment belt and a base when adjusting the length of the safety belt, leading to wear on edges of the adjustment belt and causing consumer complaints.

[0112] The First Aspect of The Present Disclosure

[0113] Fig. 1 shows a perspective view and a partial view of a child safety seat (also referred to as a child carrier in a third aspect of the present disclosure) 11 A, and the partial view primarily illustrates a structure of the harness length adjustment structure 1100A. The child safety seat 11 A, for example, as a child carrier, may be combined with a base 12A below that is detachably secured to a vehicle seat. The child safety seat 11A includes a seat portion 1200A, a backrest portion 1300 A, a headrest portion 1400A, side wings 1500A on both sides of the backrest portion 1300A and the headrest portion 1400A, and a harness assembly 1600A. The harness assembly 1600A includes a harness composed of a shoulder belt 1610A and a waist belt 1620A and an adjustment belt 1630A. The adjustment belt 1630A is connected to the shoulder belt 1610A on a back side of the child safety seat 11A for adjusting the length of the shoulder belt 1610A. The shoulder belt1610A and the waist belt 1620 A may be manufactured separately or from a single harness.

[0114] The child safety seat 11A further includes a harness length adjustment structure 1100A that is arranged in a recessed opening 1210A in a middle of a front edge of the seat portion 1200A. The opening 1210A includes a bottom wall 1212A, a rear wall 1213A, and two side walls 1214A that are substantially perpendicular to the bottom wall 1212A and the rear wall 1213 A.

[0115] It is discovered that child’s parents (users) often pull the adjustment belt 1630A from one side to adjust the length of the harness 610A when the child safety seat 11A is oriented towards front or rear of the vehicle. For example, when the child safety seat 11 A is mounted on a left seat in the second row of the vehicle and the user is seated on a right seat in the second row, the user attempts to pull the end of the adjustment belt 1630A at the front end of the base 12A from the right side to adjust the length of the harness 610A (shoulder belt) of the child safety seat 11 A. At this time, a direction of pulling movement of the adjustment belt 1630 A is not directly towards the straight ahead of the base 12 A, but rather towards a right side or an upper right side, thereby resulting in friction between a right edge of the adjustment belt 1630A and a right side wall of the opening 1210A of the base 12 A, so as to cause wearing and fraying of the edge of the adjustment belt 1630A.

[0116] A locking member of the harness length adjustment structure 1100A includes a securing seat 1120 A, a locking block 1110A pivotably connected to the securing seat 1120A, and a resetting member (not shown) that constantly biases the locking block 1110A towards a locking position. The locking block 1110A, for example, is pivotably connected to support brackets 1123 A that rise on both sides of the securing seat 1120A and is held in the locking position by the resetting member. When the locking block 1110A is in the locking position, the adjustment belt 1630A, such as the adjustment webbing, of the harness or the shoulder belt 1610A of the harness assembly 1600A is locked at an outlet 1122A between the securing seat 1120 A and the locking block 1110A, therebymaintaining the length of the shoulder belt 1610A adapted to the child currently riding. When the length of the shoulder belt 1610A is not adapted to the child, the user may press a rear portion of the locking block 1110A, through a gap above the locking block 1110A at a rear portion of the opening 1210A, for example, by hand, to lift a front end of the locking block 1110A that forms the outlet 1122A with the securing seat 1120A, allowing the adjustment belt 1630A to be partially pulled out or retracted from the seat portion 1200 A so as to adjust the shoulder belt 1610A. The securing seat 1120 A is secured to the bottom wall 1212A of the opening 1210A, for example, through rivets at the securing holes 1121A, herein only securing holes 1121 A on the two front sides are shown.

[0117] The adjustment belt 1630A is locked to different positions by the locking block 1110A to adjust the length of the shoulder belt 1610A. When the user, for example, operates the adjustment belt 1630 A from the side of the child safety seat 11A as the vehicle is travelling, the adjustment belt 1630A is often not pulled perpendicular to the seat portion 1200A but may be biased to one side, thereby rubbing the edge of the adjustment belt 1630A against the edge of the seat portion 1200 A or the opening 1210A, so as to cause wearing and fraying of the adjustment belt 1630A. This can affect its appearance and cause consumer complaints. If the adjustment belt 1630 A is pulled diagonally upward, it may also get stuck in the gap between the securing seat 1120 A and the locking block 1110A, thereby making it impossible for the user to pull the adjustment belt 1630A and rendering the adjustment function ineffective.

[0118] Fig. 2 shows a perspective view and a partial view of a child safety seat 11 according to an embodiment of the present disclosure, and the partial view mainly illustrates a structure of the harness length adjustment structure 1100, and the sectional views along the sectional lines 1A-1A in the partial view are respectively shown in Figs. 5 and 7 as two embodiments. According to the present disclosure, the child safety seat 100 includes a seat portion 1200, a backrest portion 1300, a headrest portion 1400, side wings 1500 on both sides of the backrest portion 1300 and the headrest portion 1400, and a harness assembly1600. The harness assembly 1600 includes a harness composed of a shoulder belt 1610 and a waist belt 1620, and an adjustment belt 1630. The adjustment belt 1630 is connected to the shoulder belt 1610 on a back side of the child safety seat 11 and is used to adjust the length of the shoulder belt 1610. The adjustment belt 1630 has an adjustment section 1631 that extends out of the child safety seat 11 and a connection section 1632 that is arranged inside the child safety seat 11 (see Figs. 5 and 7). The connection section 1632 is connected to the shoulder belt 1610 of the harness, and the adjustment section 1631 extends out of the seat portion 1200 through the opening 1210. An edge of the adjustment section 1631 is opposite to a side wall 1214 of the opening 1210. The shoulder belt 1610 and the waist belt 1620 may be manufactured separately or from a single harness.

[0119] Fig. 2 also illustratively shows a buckle 1700 and a connecting strap 1710 connecting the buckle 1700 to the seat portion 1200. The buckle 1700 is used to fasten the harness of the child safety seat 11, or to fasten a junction of the shoulder belt 1610 and the waist belt 1620. The other end of the shoulder belt 1610, for example, is connected to the adjustment belt 1630 at the rear of the child safety seat 11. The length of the shoulder belt 1610 fastened to the buckle 1700 may be adjusted by the adjustment belt 1630 to fit the child’s seating needs, thereby safely securing the child in the child safety seat 11.

[0120] According to the present disclosure, the child safety seat 11 includes a harness length adjustment structure 1100 that is in the opening 1210 in the middle of a front edge of the seat portion 1200 and includes a cover 1130. The cover 1130 is secured in the opening 1210, for example, by two vertical rivets 1810, and covers the harness length adjustment structure 1100. The shape of the cover 1130 matches with the shape of the seat portion 1200 to enhance comfort during use. The cover 1130 and the opening 1210 are configured to form an adjustment belt hole and an unlocking hole. The adjustment belt hole and the unlocking hole are spaced apart from each other. The adjustment section 1631 passes through the adjustment belt hole, and the unlocking part 1112 of the locking member of the adjustment belt 1630 is exposed out of the cover 1130 through the unlocking hole.The user can insert a finger into the unlocking hole and press the unlocking part 1112 to pivot, to unlock the locking block 1110A so as to prevent accidental touch.

[0121] According to the present disclosure, a protective device or drum is provided between the cover 1130 and the seat portion 1200A. For example, the protective device is configured as a vertical drum 1810 and is respectively sleeved on two vertical rivets 1811 on both sides of the adjustment belt 1630, and the vertical drum 1810 is positioned between the side wall 1214 and the adjustment section 1631 of the adjustment belt 1630. In this embodiment, the vertical drum 1810 includes a first vertical drum and a second vertical drum, which are respectively arranged on both sides of the adjustment belt 1630 in a width direction, and a spacing between the first vertical drum and the second vertical drum is greater than a width of the adjustment belt 1630. Additionally or alternatively, the vertical drum 1810 may be pivotally connected to at least one of the seat portion 1200 and the cover 1130 via the vertical rivets 1811. In some embodiments, an upper end of the vertical rivet 1811 is only secured to the cover 1130 to reduce the cost of production and assembly. In other embodiments, the upper end of the vertical rivet 1811 is secured to the cover 1130, and a lower end thereof is secured to an upper surface of the child safety seat 11 , thereby providing a more secure fixation for the vertical drum 1810.

[0122] According to this embodiment, a height of an outlet portion 1132 of the cover 1130 is lower than a height of the covering portion 1131. The outlet portion 1132 covers the vertical drum 1810, and the covering portion 1131 of the cover 1130 partially covers the locking member or the locking block 1112 of the locking member. The covering portion 1131 forms a clearance space for the pivotal movement of the locking block 1112. The height of the outlet portion 1132 is lower, which limits the movement range of the adjustment belt in the vertical direction, thereby avoiding incomplete engagement between the adjustment belt and the locking block 1112 due to flipping or folding etc. The vertical drum is arranged in the outlet portion 1132. The vertical drum with asmaller height may be used to reduce costs, or the vertical drum with a concave outer peripheral surface may be sued to further reduce friction between the adjustment belt and the vertical drum.

[0123] For example, when the user operates the adjustment belt 1630 from the both sides of the child safety seat 11 and inadvertently causes the adjustment belt 1630 to be squeezed towards the sides of the seat portion 1200 due to spatial limitations, the vertical drum 1810 may roll relative to the vertical rivet 1811, to reduce the friction between the adjustment belt 1630 and other components and minimize wear on the adjustment belt 1630. At the same time, due to rolling action of the vertical drum 1810, it is possible to prevent the adjustment belt 1630 from getting stuck with other components, and thereby providing a better use experience.

[0124] Fig. 3 shows a perspective view of the cover 1130 according to an embodiment of the present disclosure. The cover 1130 includes a covering portion 1131 and an outlet portion 1132, which are either integrally molded or manufactured separately to be combined. The covering portion 1131 is used to cover the harness length adjustment structure 1100, and the outlet portion 1132 is used for the entry or exit of the adjustment belt 1630.

[0125] The covering portion 1131 includes a covering portion upper wall 11311 and a covering portion side wall 11312. The covering portion upper wall 11311 may be shaped to match with surrounding components, for example, designed to have a recess at the rear end thereof, and also be designed as a flat part etc. A notch 1137 is provided at a lower side of the covering portion side wall 11312. The notch 1137 is used to avoid the covered components, such as the support bracket 1123 of the pivot axis of the locking block 1110, of the harness length adjustment structure 1100, and is designed in an arc shape as shown. The covering portion side wall 11312 also has a connecting boss 1136 that is matingly connected to a connecting slot 1211 on the opening 1210 of the seat portion 1200 (see Figs. 4 and 6) to secure the cover 1130 to the opening 1210.[12b] The covering portion upper wall 11311 also has a recess 1134 at the frontthereof. A perforation 1135, through which the horizontal rivet 1820 passes, is provided in the recess 1134. The head of the horizontal rivet 1820 may be extend out of the perforation 1135 and accommodated in the recess 1134, such that the horizontal rivet 1820 may be securely engaged with the cover 1130.

[0127] The outlet portion 1132 includes an outlet portion upper wall 11321 and outlet portion side walls 11322, forming the entry and exit for the adjustment belt 1630. Perforations 1133, through which the vertical rivets 1811 pass, are provided on the outlet portion upper wall 11321, and two perforations 1133 are on opposite sides of the outlet portion upper wall 11321.

[0128] Fig. 4 shows a perspective view and a partial view of a child safety seat according to an embodiment of the present disclosure, and the partial view mainly illustrates a structure of the harness length adjustment structure 1100. Fig. 4 shows the harness length adjustment structure 1100 without the cover 1130 as shown in Figs. 2 and 3. The harness length adjustment structure 1100 includes a locking member in an opening 1210 in the middle of a front edge of the seat portion 1200. The locking member is sleeved at the adjustment section 1631 of the adjustment belt 1630 to operably lock the adjustment belt 1630. The locking member includes a securing seat 1120, a locking block 1110 pivotably connected to the securing seat 1120, and a resetting member (not shown) that constantly biases the locking block 1110 towards the locking position. The locking block 1110 has a locking part 1111, an unlocking part 1112 for unlocking, and a pivot axis 1113. When the adjustment belt 1630 is locked by the locking member, the adjustment belt 1630 is clamped between the securing seat 1120 and the locking block 1110. The locking block 1110, for example, is pivotably connected to the lateral sections that rise from the both sides of the securing seat 1120 and is held in the locking position by the resetting member. When the locking block 1110 is in the locking position, the adjustment belt 1630, such as the adjustment webbing, of the shoulder belt 1610 of the child safety seat 11 is locked at an outlet 1122 between the securing seat 1120 and the locking block 1110, maintaining the length of the shoulder belt 1610 adapted to the child currently riding. When thelength of the shoulder belt 1610 is not adapted to the child, the user may press the rear portion of the locking block 1110, through a gap above the locking block 1110 at a rear portion of the opening 1210, for example, by hand, to pivotably lift a front end of the locking block 1110 that forms the outlet 1122 with the securing seat 1120, allowing the adjustment belt 1630 to be partially pulled out or retracted from the seat portion 1200. The securing seat 1120 is secured to the bottom wall of the opening 1210, for example, through rivets at the securing holes 1121, herein only securing holes 1121 on the two front sides are shown. According to this embodiment, the locking member is arranged at the opening 1210 and sleeved on the adjustment section 1631 of the adjustment belt 1630, thereby operably locking the adjustment belt 1630. The vertical drum 1810 is closer to the end of the adjustment section 1631 than the locking member.

[0129] According to the present disclosure, the vertical drums 1810 and the vertical rivets 1811, which are provided on both sides in front of the securing seat 1120, at the front end of the opening 1210, are arranged on the sides of the adjustment section 1631 of the adjustment belt 1630 in the width direction, and the vertical drum 1810 is closer to the end of the adjustment section 1631 than the locking member. The adjustment belt 1630 is pulled out of the outlet 1122 and over the securing hole 1121, and then passes between the two vertical drums. The vertical drum 1810 is preferably made of plastic or other soft materials, and the shape of the vertical drum 1810 may be provided as a cylindrical drum or, for example, a concave drum or drums in other forms.

[0130] Fig. 4 also shows connecting slots 1211 on the side walls of the opening 1210, which are symmetrically arranged on the two side walls of the opening 1210 for the installation and fixation of the cover 1130. Referring to Fig. 3, connecting bosses 1136 on the side walls 1312 of the cover 1130 are plugged into the connecting slots 1211 to secure the cover 1130 within the opening 1210. | Fig. 5 shows a lateral sectional view of the cover 1130 and the harness length adjustment structure 1100 according to an embodiment of the present disclosure, which is cut along a sectional line 1A-1A in Fig. 2 and corresponds tothe embodiment shown in Fig. 4.

[0132] The locking block 1110 includes a locking part 1111, an unlocking part 1112, and a pivot axis 1113. The pivot axis 1113 is, for example, supported on a support bracket 1123 formed on both sides of the securing seat 1120, to allow the locking block 1110 to pivot. The locking part 1111 is designed to have a toothed structure at its lower end. When the locking block 1110 is in a locked position, the toothed structure presses the adjustment belt 1630 against the securing seat 1120 to lock the length of the shoulder belt in use. The unlocking part 1112 may be designed as a pressure plate as shown in the figure, the user may press on an upper side of the pressure plate, to overcome a force of the resetting member (not shown), such as a torsion spring etc., which constantly keeps the locking block 1110 locked to the adjustment belt 1630, and allow the unlocking part 1112 to pivot downward and the locking part 1111 to lift, and then release the adjustment belt 1630 for adjustment.[ 1 | The shape of the cover 1130 is adapted to match with the seat portion 1200. The head of the vertical rivet 1811 extends from the upper side of the outlet portion 1132 for fixation, while the vertical drum 1810 sleeved on the outside of the vertical rivet 1811 is positioned between the outlet portion 1132 and the seat portion 1200, allowing it to rotate freely to avoid wear on the adjustment belt 1630. A rear wall 1138, which is provided at the back of the covering portion 1131, is above the locking block 1110 to close a gap between the covering portion 1131 and the locking block 1110, which is convenient to form an opening for operating the locking block 1110.

[0001] Fig. 6 shows a perspective view and a partial view of a child safety seat 11 according to another embodiment of the present disclosure, and the partial view mainly illustrates a structure of a harness length adjustment structure 1100. According to this embodiment, a horizontal drum 1820 is also provided in the opening 1210, which is used to prevent friction between the adjustment belt 1630 and the cover 1130 or other structures on the seat portion 1200 when the adjustment belt 1630 is pulled upward. According to this embodiment, thehorizontal drum 1820 is arranged between the vertical drum 1810 and the outlet 1122, above the adjustment belt 1600, and is connected to the cover 1130, for example, by a horizontal rivet 1821. Alternatively, the horizontal drum 1820 may also be rotatably arranged between the two side walls of the opening 1210 by other means, for example a pivot shaft. The horizontal drum 1820 limits the upward pull of the adjustment belt 1630 and may prevent the adjustment belt 1630 from being caught in the gap between the securing seat 1120 and the locking block 1110. At the same time, when adjusting the adjustment belt 1630, if the adjustment belt 1630 is pulled upward, the adjustment belt 1630 is in a rolling contact with the horizontal drum 1820, which cannot affect smooth sliding of the adjustment belt 1630.

[0015] According to the present disclosure, the horizontal drum 1820 extends along the width direction of the adjustment section 1631. The horizontal drum 1820 and the bottom wall 1212 of the opening 1210 are respectively arranged on opposite sides of the adjustment belt 1630 in a thickness direction. The horizontal drum 1820 is arranged between the vertical drum 1810 and the locking member, or locking block 1110. A projection of the horizontal drum 1820 on the side wall 1214 of the opening 1210 is partially overlapped with a projection of the vertical drum 1810 on the side wall 1214. This can reduce the spacing between the vertical drum 1810 and the horizontal drum 1820, and prevent the adjustment belt from getting caught in the gap between the vertical drum 1810 and the horizontal drum 1820. The length of the horizontal drum 1820 is greater than the spacing between the rotation axis of the first vertical drum and the rotation axis of the second vertical drum. In some embodiments, the length of the horizontal drum 1820 is smaller than the spacing between the rotation axis of the first vertical drum and the rotation axis of the second vertical drum, but greater than the spacing between the first vertical drum and the second vertical drum (i.e., the first vertical drum and the second vertical drum).

[0001] Fig. 7 shows a lateral sectional view of a cover 1130 and a harness length adjustment structure 1100 according to another embodiment of the presentdisclosure, which is cut along a sectional line 1A-1A in Fig. 2 and corresponds to the embodiment shown in Fig. 5.[ 1 | The locking block 1110 includes a locking part 1111, an unlocking part 1112, and a pivot axis 1113. The pivot axis 1113 is, for example, supported on a support bracket 1123 formed on both sides of the securing seat 1120 to pivot the locking block 1110. The locking part 1111 is designed to have a toothed structure or a rough surface structure on the lower side thereof to increase friction with the adjustment belt. The toothed structure may press against and lock the adjustment belt 1630 in the locked position of the locking block 1110. The unlocking part 1112 may be designed as a pressure plate as shown in the figure, and the user can press on an upper side of the pressure plate to overcome a force, which constantly keeps the locking block 1110 locked to the adjustment belt 1630, of the resetting member (not shown), such as a torsion spring etc., to pivot the unlocking part 1112 downward, lift the locking part 1111 and release the adjustment belt 1630 for adjustment.

[0138] The shape of the cover 1130 is adapted to match with the seat portion 1200. The head of the vertical rivet 1811 extends out of the upper side of the outlet portion 1132 for fixation, while the vertical drum 1810 sleeved on the outside of the vertical rivet 1811 is positioned between the outlet portion 1132 and the seat portion 1200, allowing it to rotate freely to avoid wear on the adjustment belt 1630. A rear wall 1138, which is provided at the back of the covering portion 1131, is above the locking block 1110 to close a gap between the covering portion 1131 and the locking block 1110, which is convenient to form an opening for operating the locking block 1110.[ 1 | In this embodiment, it may be observed that the horizontal rivet 1820 may be secured to the cover 1130, for example, secured in the perforation 1135 as shown in Fig. 3. The horizontal drum 1820 is sleeved on the horizontal rivet 1821 and freely rotatable to prevent the adjustment belt 1630 from rubbing upwards against the cover 1130 or other components. In some embodiments, a cover may not be provided, and the horizontal drum 1820 may be directly arranged on the childsafety seat 11 via the horizontal rivet 1821.

[0140] According to the present disclosure, the horizontal drum 1820 extends in a width direction of the adjustment section 1631 of the adjustment belt 1630, that is, a direction of the rotation axis of the horizontal drum 1820 is orthogonal to the movement direction of the adjustment belt 1630. The horizontal drum 1820 and the bottom wall 1212 are on opposite sides of the adjustment belt 1630 in the thickness direction. In some embodiments, the horizontal drum 1820 is arranged between the vertical drum 1810 and the locking member or locking block 1110, and is closer to one side of the vertical drum 1810. A width of a rotating surface of the horizontal drum 1820 is greater than a minimum spacing between rotating surfaces of the two vertical drums 1810, and smaller than the spacing between the rotation axes of the two vertical drums 1810. The rotating surface of the horizontal drum 1820 is partially overlapped with the rotating surface of the vertical drum 1810 in the width direction. In other words, a projection of the horizontal drum 1820 on the side wall is partially overlapped with a projection of the vertical drum 1810 on the side wall. This makes the spacing between the horizontal drum 1820 and the vertical drum 1810 compact, to reduce a risk of the adjustment belt being caught in the gap between the horizontal drum 1820 and the vertical drum 1810.

[0141] According to the present disclosure, the harness length adjustment structure 1100 of the child safety seat 11 has a structure to prevent the adjustment belt 1630 from swaying left and right at the outlet 1122 of the adjustment belt 1630. When the adjustment belt 1630 is pulled, this structure prevents the adjustment belt 1630 from being excessively pulled to the left or the right, to avoid friction between the adjustment belt 1630 and the child safety seat 11.

[0142] Specifically, the harness length adjustment structure 1100 of the child safety seat 11 is provided with a drum structure at the outlet 1122 of the adjustment belt 1630. When the adjustment belt 1630 is pulled, the adjustment belt 1630 comes into contact with the drum, to rotate the drum, thereby resulting in minimal friction therebetween.

[0143] By placing drums on the left and right sides at the outlet of the adjustment belt 1630 of the harness length adjustment structure 1100, it can prevent the adjustment belt 1630 from being scratched by the friction caused by contacting with the child safety seat 11. Moreover, when the adjustment belt 1630 is adjusted, the drums rotate, resulting in minimal friction between them. Additionally, by placing a horizontal drum 1820 at the top of the outlet of the adjustment belt 1630, it can prevent the adjustment belt 1630 from being clamped due to being overly pulled upward while the friction between the adjustment belt 1630 and the drum is small, allowing for smooth sliding.

[0144] Existing child safety seats, in the event of an accidental impact, the child forward impact and then come back in direct contact with the seat body, due to the impact of a larger force, in the tightening of the harness at the same time, it may happen that the seat belt is too tight resulting in strangulation of the child, the occurrence of secondary accidents, resulting in injuries.

[0145] The Second Aspect of the Present Disclosure

[0146] Fig. 8 shows a perspective view of a child safety seat according to an embodiment of the present disclosure. The child safety seat includes a harness length adjustment structure 2100, a seat portion 2200, a backrest portion 2300, a headrest portion 2400, side wings 2500, a harness assembly 2600, and a buckle 2700. The seat portion 2200 and the backrest portion 2300 together form a seat body 21.

[0147] The harness assembly 2600 includes shoulder belt 2610, crotch belt 2620, an adjustment belt 2630, and inserts 2640. The shoulder belts 2610 is divided into two sets, with each set of shoulder belt 2610 being integrally made from a single webbing or similar material. After a child is seated, the two webbing straps are connected to the buckle 2700 via the inserts 2640, and the buckle 2700 is connected to the seat portion 2200 via a connecting strap 2710. The buckle 2700 has a flat opening at a lower portion thereof to allow the connecting strap 2710, such as a flexible webbing strap or similar material, to pass through the flat opening. The two ends of the connectingstrap 2710 are connected to the seat portion 2200.

[0148] In this case, the webbing straps above the inserts 2640 form the shoulder belts 2610, and the webbing straps below the inserts 2640 forms the crotch belts 2620. As shown in Fig. 8, one end (i.e., the fixed end) of each shoulder belt 2610 is securely connected to a surface of the seat portion 2200, and the other end of each should belt 2610 passes through a through-hole in the backrest portion 2300 into an interior of the backrest portion 2300. A portion of the shoulder belt 2610 in the interior of the backrest portion 2300 is connected to one end of the adjustment belt 2630 on a backside of the seat body 21. The other end of the adjustment belt 2630 (i.e., the free end) passes through the harness length adjustment structure 2100 and the opening at the front end of the seat portion 2200, and then extends out of the seat body 21. The free end of the adjustment belt 2630 is operably locked at the harness length adjustment structure 2100, such that the user can adjust the length of the shoulder belt 2610 exposed outside the backrest portion 2300 by pulling the free end of the adjustment belt 2630. In some embodiments, the shoulder belts 2610 and the adjustment belts 2630 may be made from a single continuous webbing strap. The adjustment belt 2630 may also be considered as part of the harness assembly.

[0149] The harness length adjustment structure 2100 is arranged at a central front side of the seat portion 2200 and adjusts the length of the shoulder belt 2610 by releasing and locking the adjustment belt 2630, to accommodate children of different sizes. As shown in Fig. 8, a cover 2130 for covering the harness length adjustment structure 2100 is shaped to match the seat portion 2200.

[0150] Fig. 9A shows a sectional perspective view and a partial enlarged view of the child safety seat according to an embodiment of the present disclosure, with the seat body 21 being schematically cut along a sectional line 21-21 as shown in Fig. 8, and the partial enlarged view substantially showing a position of the harness length adjustment structure 2100.

[0151] A flexible connecting strap 2710 is threaded through the buckle 2700, with the ends fixed to the upper surface of the seat portion 2200, such that the buckle 2700 is positioned within a riding space enclosed by the seat portion 2200, the side wings 2500, and the backrest portion 2300. After the child is seated, the buckle 2700 is plugged by the harness assembly 2600 (not shown) to ensure the child's riding safety. According to this embodiment, the shoulder belts 2610 pass through the through-hole in the backrest portion 2300 and extends downward to an underside of the seat body 21.

[0152] The partial enlarged view shows the adjustment belt 2630, the harness length adjustment structure 2100, and the harness buffer mechanism 2800. The free end of the adjustment belt 2630 sequentially extends through the harness buffer mechanism 2800 and the harness length adjustment structure 2100 from a rear underside of the seat body 21, and then protrudes out the front side of the seat portion 2200.

[0153] The harness length adjustment structure 2100 is arranged in a recessed opening 2210 at the central front edge of the seat portion 2200. The opening 2210 includes a bottom wall 2212, a rear wall 2213, and two side walls 2214 which are substantially perpendicular to the bottom wall 2212 and the rear wall 2213. The harness length adjustment structure 2100 includes a cover 2130 and a locking member composed of a locking block 2110 and a securing seat 2120. The locking block 2110 may be rotatably pivoted on the securing seat 2120 and held in a locking position by a resetting member (not shown) that constantly biases the locking block 2110 towards the locking position. When the locking block 2110 is in the locking position, the adjustment belt 2630 of the shoulder belt 2610 of the harness assembly 2600, such as an adjustment webbing strap or similar material, is locked at an adjustment belt outlet 2216 between the securing seat 2120 and the locking block 2110, thereby maintaining the length of the shoulder belt 2610 that fits the child currently riding. When the length of the shoulder belt 2610 does not fit the child, the user may press a rear portion of the locking block 2110 through agap above the locking block 2110 at the rear of the opening 2210, for example, by hand to lift the front end of the locking block 2110 forming the adjustment belt outlet 2216 with the securing seat 2120, thereby allowing the adjustment belt 2630 to be partially pulled out or retracted from the seat portion 2200 so as to adjust the shoulder belt 2610. The securing seat 2120 is secured to the bottom wall 2212 of the opening 2210, for example, through rivets in the securing holes. The adjustment belt 2630 is threaded into the harness length adjustment structure 2100 through the adjustment belt inlet 2215 below the rear wall 2213, substantially placed flat on the securing seat 2120 with the width side and sliding between the locking block 2110 and the securing seat 2120, and finally extends out of the harness length adjustment structure 2100 through the adjustment belt outlet 2216 formed by the cover 2130 and the bottom wall 2212.

[0154] According to the present disclosure, a harness buffer mechanism 2800 is provided on another side of the rear wall 2213 of the opening 2210, opposite to the harness length adjustment structure 2100. When the vehicle quipped with the seat body 21 experiences an emergency deceleration due to an unexpected impact or the like, the child will pull the harness tight while moving forward or backward. The harness must overcome elastic force of the harness buffer mechanism 2800 when being tightened, thereby buffer the tightening of the harness and preventing the harness from strangling and injuring child when the harness is tightened.

[0155] The adjustment belt 2630 has a bending section 2631 adapted to the harness buffer mechanism 2800. With the buffer movement of the harness buffer mechanism 2800, curvature of the bending section 2631 is changed. Since the adjustment belt 2630 is made of an elastic flexible material, the change in the curvature provides a favorable buffer effect. According to the present disclosure, for example, when the locking block 2110 of the harness length adjustment structure 2100 locks the adjustment belt 2630, the bending section 2631 of the adjustment belt 2630 provides a long adjustment marginof the adjustment belt. When the child's body rushes forward to drive the harness to move during vehicle braking and emergency, the adjustment belt 2630 can provide the adjustment margin, so that the harness can better adapt to the distance of the child's forward movement, and the harness will not strangle the child.

[0156] The adjustment belt 2630, after passing through the harness buffer mechanism 2800, extends into the harness length adjustment structure 2100 from a rear edge of the bottom wall 2212 in a manner parallel to the bottom wall 2212 through an adjustment belt inlet 2215.[ 15’’ ] The harness buffer mechanism 2800 includes a securing bracket 2810, a buffer member 2820, a guide 2830, an elastic member 2840, fasteners 2850, and a limiting pin 2860. According to the present disclosure, the securing bracket 2810 is configured to secure the harness buffer mechanism 2800 to the seat body 21. The securing bracket 2810 includes an upper wall 2811, side walls 2812, a buffer support 2814, a guide rod support 2815, and a buffer slot 2816. Particularly, an upper wall 2811 of the securing bracket 2810 is secured to the mounting portion 2220 through fasteners 2850, such as bolts or rivets. The mounting portion 2220 is configured to mount the harness buffer mechanism 2800 and position on the underside of the seat portion 2200. The side walls 2812 are used to support the buffer member 2820 and the guide rod 2830. The buffer member 2820 is movably arranged at the securing bracket 2810 and has a first position (also see Fig. 13) and a second position (see Fig. 14) as shown. The harness assembly 2600 is configured to partially surround the buffer member 2820. According to this embodiment, the buffer member 2820 is slidably embedded in the buffer slot 2816 in the side wall 2812 and displaces within the buffer slot 2816, for example, by sliding. The adjustment belt 2630 abuts against the buffer member 2820. The buffer slot 2816 is constructed as a strip shape perpendicular to the adjustment belt 2630 for buffering the adjustment belt 2630 in a vertical direction. The limiting pin 2860 slides in the buffer slot 2816 and supports the displacement of the buffermember 2820. For example, the limiting pin 2860 is inserted into the buffer member 2820.

[0158] Referring to Fig. 9, the buffer member 2820 is at a lowermost end of the buffer slot 2816, in this case, the buffer member 2820 is in a normal use state without any emergency braking occurring. In the event of manual adjustment of the length of the harness or the emergency braking, when the harness is tightened, the buffer member 2820 may slide upward due to an upward force applied by the bending section 2631 of the adjustment belt 2630.

[0159] According to the present disclosure, an elastic member 2840, such as a compression spring, is provided between the buffer member 2820 and the upper wall 2811. The elastic member 2840 may be arranged between the securing bracket 2810 and the buffer member 2820, or between the seat body 21 and the buffer member 2820, and may bias the buffer member 2820 to the first position. The elastic member 2840 constantly applies a pushing force to the buffer member 2820, so that the upward movement of the buffer member 2820 is damped by the elastic force of the elastic member 2840, so as to effectively prevent a risk of injury to the child due to impact. The buffer member 2820 is preferably configured as an arc or semi-circle on the side facing the adjustment belt 2630, with a width corresponding to the width of the adjustment belt 2630. On the other side away from the adjustment belt 2630, the buffer member 2820 is, for example, designed as a cylindrical protrusion for easy insertion and fixation of the elastic member 2840. According to this embodiment, as the adjustment belt 2630 is intentionally pulled or unintentionally pulled due to an impact on the vehicle, the buffer member 2820 may advantageously pivot as sliding by means of the limiting pin 2860 inserted in the buffer slot 2816, and further damp the movement of the harness due to the interaction between the buffer member 2820 and the adjustment belt 2630.[ )] The harness buffer mechanism 2800 also includes a guide 2830, for guiding the direction of the harness assembly 2600 through the harness buffermechanism 2800. According to this embodiment, the guide 2830 is configured as a guide rod 2830 that may be advantageously rotated and supported in the securing bracket 2810, for changing the movement direction of the adjustment belt 2630. Specifically, the guide rod 2830 is configured such that a direction in which the adjustment belt 2630 is threaded through the harness buffer mechanism 2800 is parallel to a direction in which the adjustment belt 2630 is threaded out of the harness buffer mechanism 2800. According to this embodiment, two guide rods 2830 are positioned on both sides of the buffer member 2820 in a direction of the adjustment belt 2630. Advantageously, the two guide rods 2830 are symmetrically arranged relative to the buffer member 2820, i.e., arranged at the same height, so that the adjustment belt 2630 can provide a more uniform pulling force to the buffer member 2820.

[0161] Fig. 9B shows a sectional perspective view and a partial enlarged view of the child safety seat according to an embodiment of the present disclosure. Different from Fig. 9 A, according to this embodiment, a reinforcement rod 2310 is provided at the rear of the backrest portion 2300, and each of the shoulder belts 2610 is configured to pass over the reinforcement rod 2310 from an upper portion of the backrest portion 2300 and then connect to the adjustment belt 2630.

[0162] According to this embodiment, two ends of the reinforcement rod 2310 are rotatably secured to the backrest portion 2300, and the shoulder belt 2610 extends downward after passing over the reinforcement rod 2310 between the two ends thereof. The reinforcement rod 2310 allows the shoulder belt 2610 to extend in parallel for a certain distance after passing through the through-hole in the backrest portion 2300, to improve the sliding performance of the shoulder belt 2610 at the position of the through-hole.[ b | Fig. 10 shows a sectional side view and a partial enlarged view of the child safety seat according to an embodiment of the present disclosure, with the component positions corresponding to those in Fig. 9.[ b ] In this embodiment, the locking block 2110 does not lock the adjustmentbelt 2630, to allow the user to manually pull the adjustment belt 2630 to adjust the length of the harness. Advantageously, after the child is seated in the seat body 21 and the harness is adjusted to have an appropriate length, the locking block 2110 locks the adjustment belt 2630, which enables the harness buffer mechanism 2800 to better perform its buffer function.

[0165] The harness length adjustment structure 2100 is arranged in the opening 2210 of the seat portion 2200 and in front of the rear wall 2213. Oppositely, the harness buffer mechanism 2800 is mounted on the mounting portion 2220 by using fasteners 2850, on the other side of the rear wall 2213 (i.e., within an internal space of the seat portion 2200). After extending from the rear side of the backrest portion 2300 to the underside of the seating portion 2200, the adjustment belt 2630 first passes through the harness buffer mechanism 2800. After passing through the left guide rod 2830, the adjustment belt 2630 basically extends straight through the adjustment belt inlet 2815 in the rear wall 2213 and slides on the securing seat 2120 of the harness length adjustment structure 2100. Finally, the adjustment belt 2630 extends out of the seat portion 2200 through the adjustment belt outlet 2216 formed between the cover 2130 and the bottom wall 2212 of the opening 2210. According to this embodiment, it is advantageous that the guide rod 2830 at least near the securing seat 2120 is at the same height as the upper side of the securing seat 2120 of the harness length adjustment structure 2100.[ b ] According to the present disclosure, the side wall 2812 of the securing bracket 2810 is advantageously shaped as an inverted trident, having one middle portion provided with a buffer support 2814, and two sides respectively provided with guide rod supports 2815. Advantageously, the buffer member 2820 and the guide rod 2830 are pivotably supported within it. According to this embodiment, it is possible to save the materials and reduce the weight.[ b | In Fig. 10, the configuration of the buffer member 2820 may be seen clearly. According to this embodiment, a portion of the buffer member 2820connected with the adjustment belt 2630 is configured as an arc portion, and a portion of the buffer member 2820 connected to the elastic member 2840, such as a compression spring, is configured as a cylindrical portion. A receiving portion for supporting an end of the compression spring is formed between the arc portion and the cylindrical portion. In the event of a vehicle impact or emergency braking, where the child’s body is thrusted forward causing the harness to be suddenly tensioned, the configuration of the buffer member 2820 may effectively slow down the movement of the adjustment belt 2630.

[0168] According to the present disclosure, the material of the buffer member 2820 may be selected to have a great friction with the adjustment belt 2630. Combined with the flexible stretching force of the adjustment belt 2630, the harness buffer mechanism 2800 may perform its buffer function without the elastic member 2840. In this case, the buffer member 2820 is securely arranged in the securing bracket 2810 of the harness buffer mechanism 2800 with a fixed position.[ b | Fig. 11 shows a sectional perspective view and a partial enlarged view of the child safety seat according to an embodiment of the present disclosure, with the seat body 21 being schematically cut along a sectional line 21-21 as shown in Fig. 8, and the partial enlarged view substantially showing a position of the harness length adjustment structure 2100. In Fig. 11, the buffer member 2820 is in a damped state. Under such state, for example, the child's body is thrusted forward due to the emergency braking, the adjustment belt 2630 is suddenly pulled backward. At this time, the adjustment belt 2630 applies an upward force on the buffer member 2820, and the buffer member 2820 is driven by the limiting pin 2860 to slide upward in the buffer slot 2816. As the buffer member 2820 moves, the elastic member 2840 is compressed, thereby increasing the elastic force and buffering the movement speed of the adjustment belt 2630.

[0171] Fig. 12 shows a sectional side view and a partial enlarged view of thechild safety seat according to an embodiment of the present disclosure, with positions of the components corresponding to those in Fig. 11.

[0172] In Fig. 12, it can be clearly seen that the buffer member 2820 moves upward by a certain distance along the buffer slot 2816, thereby exposing the lower portion of the buffer slot 2816. The bending section 2631 of the adjustment belt 2630, which is between the two guide rods 2830, becomes less curved due to the upward movement of the buffer member 2820, thereby buffering the movement of the harness connected to the adjustment belt 2630.[ 1 | Fig. 13 shows a perspective view of the harness buffer mechanism 2800 according to an embodiment of the present disclosure. The harness buffer mechanism 2800 includes a securing bracket 2810, a buffer member 2820, a guide rod 2830, an elastic member 2840, and a limiting pin 2860. The buffer member 2820 is in the first position at the lowermost end of the buffer slot 2816, that is, the buffer member 2820 is only subjected to a downward external force exerted by the elastic member 2840.

[0174] The securing bracket 2810 includes an upper wall 2811, two side walls 2812 perpendicular to the upper wall 2811, a buffer support 2814, a guide rod support 2815, and a buffer slot 2816. According to this embodiment, the buffer support 2814 and the guide rod support 2815 are formed by the side walls 2812, thereby forming an inverted trident shape. A long strip-shaped buffer slot 2816 is arranged in the buffer support 2814, and a pin head 2861 of the limiting pin 2860 of the buffer member 2820 passes through the buffer slot 2816, to allow the buffer member 2820 to slide up and down between the two side walls 2812 along the buffer slot 2816, and the buffer member 2820 may pivot around the limiting pin 2860. The elastic member 2840 has one end that abuts against the upper wall 2811, and the other end that abuts against the buffer member 2820. The elastic force keeps the buffer member 2820 at the lowermost end of the buffer slot 2816. The guide rod support 2815 has a perforation 2817, through which a rod head 2831 of the guide rod 2830 is threaded. The guide rod 2830 may be advantageously pivotable in theperforation 2817.[ P5] The harness buffer mechanism 2800 also includes a securing hole 2813 securely connected with the seat portion 2200. According to the present disclosure, it is preferable to provide at least two securing holes 2813 to offer a more stable connection.[ 1 | Fig. 14 shows the harness buffer mechanism 2800 according to an embodiment of the present disclosure. Different from Fig. 13, the buffer member 2820 slides to a second position at an upper end of the buffer slot 2816. At this time, the buffer member 2820 moves upward due to the driving force from, for example, the adjustment belt 2630, thereby compressing the elastic member 2840. As the buffer member 2820 slides upward, the elastic member 2840 provides a buffering force for the upward movement. Additionally, after an event such as emergency braking ends, due to the disappearance of the upward external force applied by the adjustment belt 2630, the compressed elastic member 2840 resets itself, causing the buffer member 2820 to drive the adjustment belt 2630 downward, thereby allowing the harness to be re-tightened. According to the present disclosure, the harness can automatically tighten to its initial position in a gentle manner before the emergency braking, ensuring the safety of the child riding while ensuring the child’s comfort.

[0177] According to the present disclosure, a length of the harness assembly 2600 in contact with the buffer member 2820 (e.g., a length of the shoulder belt or the adjustment belt wound around the buffer rod) when the buffer member 2820 is in the first position is greater than a length of the harness assembly 2600 in contact with the buffer member 2820 when the buffer member 2820 is in the second position. As the buffer member 2820 moves from the first position to the second position, a force arm between the adjustment belt and the buffer member gradually decreases, and a buffering force provided by the buffering mechanism increases non-linearly, providing a buffering effect that is gentle in the early stage and stronger in the laterstage for the child. It can also advantageously save the length of the spring. In some embodiments, the guide 2830 is arranged between the first and second positions in an extension direction of the harness assembly 2600 to increase the difference in the force arm between the harness assembly and the buffer member when the buffer member is in the first and second positions. Optionally, the length of the harness assembly 2600 in contact with the buffer member 2820 when the buffer member 2820 is in the first position is greater than twice the length of the harness assembly 2600 in contact with the buffer member 2820 when the buffer member 2820 is in the second position.

[0178] Fig. 15 shows an exploded view and a partial enlarged view of the child safety seat according to an embodiment of the present disclosure.[ 1 | As shown in the lower perspective view, the harness length adjustment structure 2100, along with the adjustment belt 2630 passing through it, is separated from the seat portion 2200. The adjustment belt 2630 has a bending section 2631 for the harness buffer mechanism 2800 next to the harness length adjustment structure 2100.

[0180] An exploded view of the harness buffer mechanism 2800 is shown in the partial enlarged view, from which the perforation 2817 for the guide rod 2830, the long strip-shaped buffer slot 2816 for the buffer member 2820, and the elastic member 2840 in the form of a compression spring can be seen more clearly. Additionally, it also can be seen that the mounting hole 2221 for mounting the harness buffer mechanism 2800 is positioned on the underside of the seat portion 2200, and a fastener 2850 is arranged between the mounting hole 2221 and the securing bracket 2810. The fastener 2850 passes through the securing hole in the upper wall 2811 of the securing bracket 2810 (see Figs. 13-14) to firmly secure the securing bracket 2810 to the seat portion 2200.

[0181] The partial exploded view also provides a better view of the limiting pin 2860 and the buffer member 2820, where a pin head 2861 of the limiting pin2860 is spaced apart from an end side of the buffer member 2820, to form a sliding segment of the buffer member 2820 in the buffer slot 2816. The guide rod 2830 has rod heads 2831 at both ends thereof, for pivotally limiting the guide rod 2830 in the perforation 2817.

[0182] Fig. 16 shows a lower perspective view and a partial enlarged view of the child safety seat according to another embodiment of the present disclosure. The seat body 21 according to this embodiment differs from that in the embodiments as shown in Figs. 8-15 in the harness buffer mechanism 2800, and other components in the embodiments as shown in Figs. 8-15.

[0183] According to this embodiment, the adjustment belt 2630 extends from the rear side of the seat portion 2200 into the harness buffer mechanism 2800. The harness buffer mechanism includes a securing bracket 2810, a buffer rod 2820, a guide rod 2830 for changing a direction of the adjustment belt 2630, an elastic member 2840, and a securing pin 2870 for securing the elastic member 2840. The securing bracket 2810 includes two side walls 2812. Under the bottom wall 2212 of the opening portion 2210 where the harness length adjustment structure 2100 is arranged, the side walls 2812 are provided with forward-extending securing pin supports 2818 for pivotally supporting the securing pins 2870. Each of the side walls 2812 is provided with a corresponding buffer slot 2817, which is configured as a long strip-shape parallel to the underside of the seat portion 2200 and accommodating the buffer rod 2820. The length of the buffer rod 2820 and the securing pin 2870 is greater than a distance between the two side walls 2812 of the securing bracket 2810, such that the head of the buffer rod 2820 and the pin head 2871 of the securing pin 2870 extend beyond the side walls 2812 and form hanging portions of the ends of the elastic member 2840 in the form of the tension spring. According to this embodiment, preferably, the guide rod 2830 is rotatably supported between the two side walls 2812. This allows theadjustment belt 2630 to change the direction after bypassing the buffer rod 2820, and then to change the direction again by bypassing the guide rod 2830, thereby enabling it to enter the harness adjustment structure 2100 from the rear wall 2213 of the opening 2210.

[0184] Advantageously, one side of the securing bracket 2810 abuts against the bottom wall 2212 and the rear wall 2213 of the opening 2210. According to this embodiment, due to the securing pin support 2818 extending forward a certain distance below the bottom wall 2212, the distance between the securing pin 2870 and the buffer rod 2820 is significantly greater than the distance between the guide rod 2830 and the rear wall 2213. According to this embodiment, the elastic member 2840 may be stretched over a great distance, thereby providing a great elastic force buffering effect. Meanwhile, because the distance between the guide rod 2830 and the rear wall 2213 is short, a path of the adjustment belt 2630 entering the harness adjustment structure 2100 is short, which is beneficial for achieving a compact and efficient locking and buffering effect.

[0185] Fig. 17 shows a sectional perspective view and a partial enlarged view of a child safety seat according to another embodiment of the present disclosure, with the sectional view taken along a sectional line 2II-2II in Fig. 16.

[0186] In this embodiment, the adjustment belt 2630 extends from the rear side of the seat portion 2200 to the buffer rod 2820, and then changes the direction via the buffer rod 2820 to the guide rod 2830, and subsequently passes around the guide rod 2830 to substantially parallel the underside of the seat portion 2200, enters the harness length adjustment structure 2100 through the adjustment belt inlet 2215 in the rear wall 2213 of the opening 2210, and finally extends out of the front side of the seat portion 2200 through the adjustment belt outlet 2261 .

[0187] In Fig. 17, the buffer rod 2820 is in the most left side of the buffer slot2816, corresponding to a normal usage state where the harness is not suddenly tensioned. In the event of the emergency braking, the forward movement of the child's body causes the harness to move abruptly, to pull the adjustment belt 2630 connected to the harness backward and then drive the buffer rod 2820 to move rearward along the buffer slot 2816. At this time, one end of the elastic member 2840, which is attached to the head of the buffer rod 2820, also moves backward, stretching the elastic member 2840 to gradually increase the elastic force, thereby buffering the rearward movement of the buffer rod 2820. The movement speed of the adjustment belt 2630 is slowed due to the restriction of the buffer rod 2820.

[0188] The fastener 2850 at the upper wall 2811 of the securing bracket 2810 is configured to secure the securing bracket 2810 to the mounting portion 2220 of the seat portion 2200.

[0189] Fig. 18 shows a sectional side view and a partial enlarged view of the child safety seat according to another embodiment of the present disclosure, with the components corresponding to those in Fig. 17.

[0190] The securing pin 2870 and the buffer rod 2820 are substantially at the same height, while the guide rod 2830 is positioned higher relative to the buffer rod 2820, substantially at the same height as the securing seat 2120. The adjustment belt 2630 continuously wraps around the buffer rod 2820 and the guide rod 2830, undergoing two direction reversals to form a Z-shaped bending section 2631, allowing the adjustment belt 2630 to enter the harness length adjustment structure 2100 at the height of the securing seat 2120. | According to this embodiment, a resistance of the adjustment belt 2630 between the harness length adjustment structure 2100 and the harness buffer mechanism 2800 is smaller to make the adjustment belt 2630 less likely to get stuck, so that the user may adjust the adjustment belt 2630 with less force. Additionally, when the locking block 2110 of the harness length adjustment structure 2100 locks the adjustment belt 2630, the Z-shaped bending section 2631 of the adjustment belt 2630 provides a longer adjustment margin of theadjustment belt. This allows, during the vehicle braking and emergency situations when the child’s body is thrusted forward to drive the movement of the harness, the adjustment belt 2630 to offer the adjustment margin. As a result, the harness can better adapt to the distance where the child is thrusted forward but without strangling the child.

[0102] It can also be seen from Fig. 18 that the securing bracket 2810 is closely attached to the rear wall 2213 and the bottom wall 2212 of the opening 2210 of the seat portion 2200, to form a shape match between the rear wall 2213 and the bottom wall 2212, thereby making the overall structure of the harness length adjustment structure 2100 and the harness buffer mechanism 2800 more compact and efficient in operation.[1 | Fig. 19 shows a lower sectional perspective view and a partial enlarged view of the child safety seat according to another embodiment of the present disclosure.

[0194] According to this embodiment, for example, when the emergency braking of the vehicle occurs, the backward movement of the adjustment belt 2630 drives the buffer rod 2820 to slide within the buffer slot 2816 to the most right-side end. During the sliding process, the elastic member 2840 is stretched to increase the elastic force and buffer the rearward movement of the buffer rod 2820. At this time, the elastic member 2840 is pulled to its maximum length, and after the emergency braking is released, the elastic force of the elastic member 2840 helps the adjustment belt 2630 and the harness connected to the adjustment belt 2630 return to their normal working positions. During the return of the adjustment belt 2630, the rotatable guide rod 2830 advantageously hinders a return speed of the buffer member 2820 to avoid adverse effects of the harness returning too quickly.

[0195] Fig. 20 shows a sectional side view and a partial enlarged view of the child safety seat according to another embodiment of the present disclosure, with the components corresponding to those in Fig. 19.[ 19o] The adjustment belt 2630 transforms from the Z-shaped bending section2631 shown in Fig. 18 at the guide rod 2830 and the buffer rod 2820 to the shape shown in Fig. 20, and the previously retained adjustment margin of the adjustment belt 2630 is used to buffer the harness. According to an embodiment, in this state, advantageously, a portion of the adjustment belt 2630 between the guide rod 2830 and the buffer rod 2820 is substantially perpendicular to the adjacent portion, thereby achieving a better mechanical effect.[1 | Fig. 21 shows a perspective view of the harness buffer mechanism 2800 according to another embodiment of the present disclosure, with a position of the buffer rod 2820 corresponding to those shown in Figs. 16, 17, and 18.

[0198] The securing bracket 2810 is formed of an upper wall 2811 and two side walls 2812 perpendicular to the upper wall 2811. The side walls 2812 have forward-extending securing pin supports 2818, to form a notch 2818. As above described, an edge of the notch 2818 abuts against the rear wall 2213 and the bottom wall 2212 of the opening 2210 of the seat portion 2200. The notch 2818 is rectangular and is also adapted to other shapes of the rear wall 2213 and the bottom wall 2212.[ >] The elastic member 2840, for example, is a tension spring with loops at both ends thereof. The loop at one end of the tension spring is attached to the hanging portion of the securing pin 2870, which is defined by the pin head 2871 and the side wall 2812, and the pin head 2871 has a diameter greater than the loop to prevent the tension spring from detaching from the securing pin 2870. The loop at the other end of the tension spring is attached to the hanging portion of the buffer rod 2820, which is defined by the rod head 2821 and the side wall 2812, and the rod head 2871 has a diameter greater than the loop to prevent the tension spring from detaching from the buffer rod 2820. In this case, the elastic member 2840 is advantageously not under force, that is, it is in a relaxed state. The elastic member 2840 may also be slightly elongated, thus during the normal use of the harness, the elastic member 2840can perform the stabilizing function by using its elastic force.

[0200] The guide rod 2830 is similar in form to the securing pin 2870 but it is shorter in length than the securing pin 2870. The rod head 2831 of the guide rod 2830 is used to pivotally secure the guide rod 2830 in the perforation 2817 of the side wall 2812.

[0201] Fig. 22 shows the harness buffer mechanism according to another embodiment of the present disclosure, with the position of the buffer rod 2820 corresponding to that as shown in Figs. 19 and 13.

[0202] Different from Fig. 21, when the buffer rod 2820 is at the most right end of the buffer slot 2816, and the elastic member 2840 is stretched to its maximum length, it is indicated that the vehicle is in an emergency braking or impact situation. The elastic member 2840 herein provides a buffering force to buffer the backward movement of the adjustment belt 2630. After the emergency situation has passed, the adjustment belt 2630 can automatically return to its normal position as the buffer rod 2820 slides within the buffer slot 2816.

[0203] Fig. 23 shows a lower perspective view and a partial enlarged view of the child safety seat according to another embodiment of the present disclosure.

[0204] As shown in the lower perspective view, the harness length adjustment structure 2100, along with the adjustment belt 2630 passing through it, is separated from the seat portion 2200. The adjustment belt 2630 has a bending section 2631 for the harness buffer mechanism 2800 next to the harness length adjustment structure 2100.

[0205] An exploded view of the harness buffer mechanism 2800 is shown in the partial enlarged view, from which the perforation 2817 for the guide rod 2830, the perforation 2817 for securing pin 2870, the long strip-shaped buffer slot 2816 for the buffer member 2820, and the elastic member 2840 in the form of a tension spring can be seen more clearly. Additionally, it also can be seen that the mounting hole 2221 for mounting the harness buffer mechanism 2800 is positioned on the underside of the seat portion 2200, and a fastener 2850 isarranged between the mounting hole 2221 and the securing bracket 2810. The fastener 2850 passes through the securing hole in the upper wall 2811 of the securing bracket 2810 to firmly secure the securing bracket 2810 to the seat portion 2200.

[0206] According to the present disclosure, the seat body 21 is equipped with a harness buffer mechanism 2800 for the harness. The harness buffer mechanism 2800 includes a buffer member 2820 (i.e., a buffer block or a buffer rod), an elastic member 2840 (i.e., a spring or a tension spring), and a buffer slot 2816 in which the buffer member 2820 is movable, and a guide rod 2830. The harness passes through the guide rod 2830 and the buffer member 2820, and under the action of the elastic member 2840, the buffer member 2820 always presses against the adjustment belt 2630 of the harness to form a buffering section. Thus, when the seat body 21 is subjected to an impact, the child moves forward or backward, it will cause the harness to be tensioned. As the harness is tensioned, it needs to overcome the elastic force of the elastic member 2820, thereby providing a buffering effect during the tightening of the harness. This helps to avoid the harness from tightening too abruptly and potentially injuring the child.

[0207] The present disclosure can address the technical problem that existing harnesss do not have a buffering function or the buffering effect is poor. This object can be achieved by the buffer member 2820, the elastic member 2840, and the buffer slot 2816 in which the buffer member 2820 moves. This mechanism is relatively simple and easy to implement. Moreover, the harness buffer mechanism 2800 is arranged at the end of the harness near the adjustment belt 2630, which makes the portion of the harness in contact with the child farther away from the harness buffer mechanism 2800, thereby forming a longer force arm. As a result, when the harness is tensioned, the buffering effect can be enhanced.

[0208] The Third Aspect of the Present Disclosure

[0209] As shown in Fig. 24, an embodiment of the present disclosure provides achild carrier (also referred to as the child safety seat according to the first and second aspects of the present disclosure) , for example, which may be a vehicle safety seat, a baby carrier, or a stroller etc. The child carrier includes a carrier body 310 and a harness assembly 320 mounted on the carrier body 310. The harness assembly 320 may be automatically locked after being tightened, thereby avoiding the harness assembly 320 from being overly tightened, which may affect the comfort of the child or cause other safety hazards. The structure of the child carrier will be described in detail below, taking the child carrier as a vehicle safety seat as an example.

[0210] As shown in Fig. 24, the carrier body 310 includes a seat portion 311 and a backrest portion 312, which are connected with each other. A riding space 313 for accommodating a child is formed between the seat portion 311 and the backrest portion 312. The harness assembly 320 is mounted on the carrier body 310.

[0211] Specifically, as shown in Figs. 24 to 26, the harness assembly 320 includes a shoulder belt set 3100, a crotch belt set 3200, an adjustment belt 3300, and a self-locking mechanism 3400. The shoulder belt set 3100 has a first end 3110 and a second end (not shown). The crotch belt set 3200 has a third end 3210 and a fourth end 3220. The adjustment belt 3300 has a fifth end 3310 and a sixth end (not shown). The third end 3210 of the crotch belt set 3200 is connected to the carrier body 310, and the fourth end 3220 of the crotch belt set 3200 is detachably connected to the first end 3110 of the shoulder belt set 3100. The fifth end 3310 of the adjustment belt 3300 is connected to the carrier body 310, and the sixth end of the adjustment belt 3300 is connected to the second end of the shoulder belt set 3100. The adjustment belt 3300 may be switched between a tightened state and a relaxed state. The self-locking mechanism 3400 may be disposed between the fifth end 3310 and the sixth end of the adjustment belt 3300. The adjustment belt 3300 passes through the self-locking mechanism 3400 to form a linkage with the self-locking mechanism 3400. When the fourth end 3220 of the crotch belt set 3200 is connected to the first end 3110 of the shoulderbelt set 3100 and the adjustment belt 3300 is in the tightened state, the shoulder belt set 3100 is in a fully tightened state, and the self-locking mechanism 3400 locks the adjustment belt 3300 to restrict the movement of the adjustment belt 3300 and the shoulder belt set 3100.

[0212] In the above described harness assembly 320, the third end 3210 of the crotch belt set 3200 is connected to the carrier body 310, the fourth end 3220 of the crotch belt set 3200 is connected to the first end 3110 of the shoulder belt set 3100, the second end of the shoulder belt set 3100 is connected to the sixth end of the adjustment belt 3300, the fifth end 3310 of the shoulder belt set 3100 is connected to the carrier body 310, thereby forming a restraint structure that may secure the child to the carrier body 310. A self-locking mechanism 3400 is provided between the third end 3210 and the fourth end 3220 of the adjustment belt 3300, and the adjustment belt 3300 passes through the self-locking mechanism 3400 to form a linkage with the self-locking mechanism 3400. When the first end 3110 of the shoulder belt set 3100 is connected to the fourth end 3220 of the crotch belt set 3200 and the adjustment belt 3300 is in the tightened state, the shoulder belt set 3100 is in the fully tightened state, and the self-locking mechanism 3400 may lock the adjustment belt 3300 to restrict the movement of the adjustment belt 3300 and the shoulder belt set 3100. This can prevent the shoulder belt set from being further tightened and avoid the harness assembly 320 from being overly tightened, which may affect the comfort of the child or cause other safety hazards.

[0213] Specifically, as shown in Fig. 24, there are two sets of the shoulder belt set 3100 has two groups, which are spaced apart on left and right sides of the carrier body 310. The two shoulder belt sets 3100 are used to restrain the child’s shoulders. In this embodiment, each shoulder belt set 3100 includes a shoulder belt body 3120 and a shoulder belt buckle 3130 connected with each other, and the shoulder belt buckle 3130 is arranged at a first end 3110 of the shoulder belt set 3100. There is one set of the crotch belt set 3200, which is used to restrain the child’s crotch. The crotch belt set 3200 includes a crotch belt body 3230 anda crotch belt buckle 3240 connected with each other (see Fig. 32, not shown in Fig. 25), and the crotch belt buckle 3240 is arranged at the fourth end 3220 of the crotch belt set 3200. The shoulder belt buckles 3130 of the two shoulder belt sets 3100 may be detachably engaged with the crotch belt buckle 3240 for easy entry and exit of the child from the riding space 313. The fifth end 3310 of the adjustment belt 3300 is secured to a front end of the seat portion 311 by a length adjustment mechanism 3700 (see Fig. 25), and is arranged in front of the crotch belt set 3200. The other end of the adjustment belt 3300 extends around the bottom of the seat portion 311 and extends to the back of the backrest portion 312 to connect with the second ends of the two shoulder belt sets 3100. In this embodiment, the length adjustment mechanism 3700 may be switched between a locked state and an unlocked state. When the length adjustment mechanism 3700 is in the unlocked state, the length of the adjustment belt 3300 may be either extended or shortened. When the length adjustment mechanism 3700 is in the locked state, the length of the adjustment belt 3300 may only be shortened.

[0214] It is noted that the orientation terms, such as front, back, left, and right mentioned in the present disclosure are referenced to the direction shown in Fig. 24 of the vehicle safety seat, specifically, a direction, to which the child faces when being seated in the vehicle safety seat is the front direction, a direction, from which the child faces away is the back direction, a left side, where the reader faces the vehicle safety seat is the left side, and a right side, where the reader faces the vehicle safety seat is the right side.

[0215] Optionally, the self-locking mechanism 3400 may have various forms. For example, in the first embodiment, as shown in Figs. 25 to 29, the self-locking mechanism 3400 may include a mounting base 3410, a driving member 3420, a locking member 3430, a securing bracket 3440, and a first resetting member 3451. In this embodiment, the crotch belt body 3230 of the crotch belt set 3200 is made of a rigid material such as plastic.

[0210] Specifically, as shown in Figs. 26 to 29, the mounting base 3410 is secured to the carrier body 310. A receiving chamber 311a may be provided inside theseat portion 311, and the mounting base 3410 is disposed within the receiving chamber 311a. The seat portion 311 also has an opening 111b that is communicate with the receiving chamber 311a. The mounting base 3410 includes a winding portion 3411 and a mounting portion 3412 which are connected with each other, and the winding portion 3411 is arranged at a front side of the mounting portion 3412. The front side of the winding portion 3411 is provided with an arc-shaped outer wall 34111 and a first limiting rod 34112 spaced from the outer wall 34111. A first passage hole 34113 for the passage of the adjustment belt 3300 is formed between the outer wall 34111 and the first limiting rod 34112. The mounting portion 3412 has a first mounting slot 34121 with an upward slot. In this embodiment, the first mounting slot 34121 is substantially a rectangular slot.

[0217] Specifically, as shown in Figs. 27 to 29, the driving member 3420 is movably disposed within the first mounting slot 34121. The driving member 3420 includes a driving body 3421 and a driving boss 3422 which are connected with each other. The driving boss 3422 is arranged at a rear side of the driving body 3421 and protrudes from an upper surface of the driving body 3421. The driving body 3421 has a third mounting slot 34211 with an upward slot. In this embodiment, the third mounting slot 34211 is substantially a rectangular slot, and the left and right side walls of the third mounting slot 34211 are each provided with a mounting recess 34212 that is communicated with the third mounting slot 34211.

[0218] Furthermore, as shown in Figs. 27 to 29, the locking member 3430 is mounted on the driving member 3420. The locking member 3430 is substantially U-shaped, including a locking body 3431 and a mounting protrusion 3432 connected at both ends of the locking body 3431. The locking member 3430 is mounted within the first mounting slot 34121 of the driving member 3420, and the two mounting protrusions 3432 of the locking member 3430 are snap-fitted and secured to the two mounting recesses 34212 of the driving member 3420.The locking member 3430 moves along with the driving member 3420.

[0219] Furthermore, as shown in Figs. 27 to 29, the securing bracket 3440 is secured to the carrier body 310. Specifically, the securing bracket 3440 is disposed within the receiving chamber 311a and is securely connected to the securing seat 3800. The securing bracket 3440 includes a frame body 3441 and a first securing portion 3442 and a second securing portion 3443, which are provided on the frame body 3441. The frame body 3441 is a rectangular frame structure with a rectangular passage slot 34411 in the middle, the left and right sides of the frame body 3441 may be sleeved on the left and right sides of the mounting portion 3412 of the mounting base 3410, and a passage slot 34411 is opposite to and communicated with a slot opening of the first mounting slot 34121, in other words, the frame body 3441 covers the outside of the mounting portion 3412. The left and right sides of the frame body 3441 may be secured to the both sides of the mounting portion 3412 by two fasteners (such as screws or rivets, etc.). The front portion of the frame body 3441 forms a limiting portion 34412. There are two first securing portions 3442 which are convexly provided on the upper side of the frame body 3441, and there is one second securing portion 3443 which is provided at the rear side of the frame body 3441. The securing bracket 3440 may be further securely connected to the seat portion 311 by setting the fasteners that pass through the second securing portion 3443 and the seat portion 311.

[0220] Furthermore, as shown in Figs. 25 and 26, the locking member 3430 is movable between a first position close to the limiting portion 34412 (see Fig. 26) and a second position away from the limiting portion 34412 (see Fig. 25). A pulling gap 3101 is formed between the locking member 3430 and the limiting portion 34412, and the adjustment belt 3300 is at least partially disposed within the pulling gap 3101. When the locking member 3430 moves from the second position to the first position, the pulling gap 3101 becomes small to restrict the movement of the adjustment belt 3300.

[0221] Furthermore, as shown in Figs. 25 and 26, the crotch belt set 3200 may beswitched between a tightened state (see Fig. 26) and a relaxed state (see Fig. 25). When the crotch belt set 3200 is switched from the relaxed state to the tightened state, it may drive the movement of the driving member 3420 in linkage, such that the driving member 3420 may move the locking member 3430 to the first position.

[0222] Furthermore, as shown in Figs. 25 and 26, the harness assembly 320 also includes a rotating base 3500. The rotating base 3500 is rotatably disposed on the carrier body 310 and connected to the third end 3210 of the crotch belt set 3200. Specifically, the rotating base 3500 includes a substantially cylindrical rotating disk 3510 and a connecting rod 3520 secured to an outer periphery of the rotating disk 3510. In this embodiment, the seat portion 311 is provided with a securing seat 3800, and the two first securing portions 3442 of the securing bracket 3440 extend into the securing seat 3800, with the rotating disk 3510 arranged between the two first securing portions 3442. The rotating disk 3510 is pivotally connected to the two first securing portions 3442 of the securing bracket3440 through a pivot 3102 disposed at its central axis, i.e., the rotating disk 3510 may rotate relative to the securing bracket 3440. An end of the connecting rod 3520 far from the rotating disk 3510 is connected to the third end 3210 of the crotch belt set 3200. In this embodiment, the crotch belt body 3230 may be connected to the connecting rod 3520 by two fasteners such as screws etc. The rotating base 3500 may rotate between a first pivot position (see Fig. 26) and a second pivot position (see Fig. 25), and the outer periphery of the rotating disk 3510 of the rotating base 3500 is provided with a pushing boss 3511, which is spaced from the connecting rod 3520. The driving member 3420 thereof has a driving boss 3422. When the crotch belt set 3200 is in the tightened state, the rotating base 3500 is in a first pivot position, and the pushing boss 3511 pushes the driving boss 3422 so that the driving member 3420 drives the locking member 3430 to the first position; when the crotch belt set 3200 is in the relaxed state, the rotating base 3500 is in the second pivot position, and the pushing boss 3511 is spaced from the driving boss 3422.

[0223] Furthermore, as shown in Figs. 27 to 29, the first resetting member 3451 is a spring. The first resetting member 3451 is disposed within the first mounting slot 34121, and the two ends of the first resetting member 3451 abut against the driving member 3420 and the mounting base 3410, respectively. The first resetting member 3451 constantly drives the driving member 3420 to move the locking member 3430 towards the second position. Specifically, the front side wall of the driving body 3421 is provided with a first sleeve boss 34213, one end of the first resetting member 3451 is sleeved on the first sleeve boss 34213 and abuts against the front side wall of the driving body 3421, and the other end of the first resetting member 3451 abuts against the wall of the first mounting slot 34121, thereby preventing the first resetting member 3451 from shifting during deformation. In this embodiment, there are two first resetting members 3451, which are spaced apart in the left and right directions of the driving body 3421 to provide a more balanced elastic force for the driving member 3420.

[0224] Hereinafter, a winding method of the adjustment belt 3300 in the self-locking mechanism 3400 in this embodiment will be described.

[0225] As shown in Figs. 24 and 28, the fifth end 3310 of the adjustment belt 3300 is secured to the seat portion 311 by the length adjustment mechanism 3700. The sixth end of the adjustment belt 3300 extends into the receiving chamber 311a through the opening 111b, and then enters the first mounting slot 34121, and extends out of the first mounting slot 34121 through the pulling gap 3101 after passing around the locking member 3430, and then winds around an arc-shaped outer wall 34111 of the winding portion 3411 of the mounting base 3410 to the rear of the backrest portion 312 so as to connect with the second end of the shoulder belt set 3100.

[0226] As such, when the shoulder belt buckle 3130 and the crotch belt buckle 3240 are not fastened, or when the adjustment belt 3300 is in the relaxed state, as shown in Fig. 25, the rotating base 3500 is in the second rotation position, and the pushing boss 3511 and the driving boss 3422 are spaced apart from each other. The driving member 3420 is driven by the elastic force of the firstresetting member 3451 to move the locking member 3430 towards the second position away from the limiting portion 34412. At this time, the pulling gap 3101 between the locking member 3430 and the limiting portion 34412 becomes large, and the adjustment belt 3300 disposed between the pulling gap 3101 may be movable freely. After the child is seated in the carrier body 310, the shoulder belt buckle 3130 and the crotch belt buckle 3240 may be fastened, and the adjustment belt 3300 may be pulled to an appropriate length, when the adjustment belt 3300 is pulled, it may drive the shoulder belt set 3100, and the shoulder belt set 3100 in turn drives the crotch belt set 3200 fastened thereto, so as to rotate the rotating base 3500. When the restraint structure connected in sequence by the adjustment belt 3300, the shoulder belt set 3100, and the crotch belt set 3200 is in the tightened state, the rotating base 3500 is rotated from the second rotation position in the first direction 3D1 to the first rotation position, as shown in Fig. 26. The pushing boss 3511 on the rotating base 3500 pushes the driving boss 3422 on the driving member 3420 along the second direction 3D2, so that the driving member 3420 may be movable along the second direction 3D2 and move the locking member 3430 to the first position. The pulling gap 3101 becomes small, and the adjustment belt 3300 is restricted between the limiting portion 34412 and the locking member 3430 and not move any more. At this time, if the adjustment belt 3300 is forcibly continued to be tightened, that is, the length of the adjustment belt 3300 is shortened, the pulling gap 3101 may become smaller and smaller, and the adjustment belt 3300 may be further clamped between the limiting portion 34412 and the locking member 3430, so that the user cannot pull the adjustment belt 3300. Thus, the harness assembly 320 is prevented from being overly tightened, which may affect the comfort of the child or cause other safety hazards.

[0227] In the second embodiment, as shown in Figs. 30 to 34, the self-locking mechanism 3400 may also include a mounting base 3410, a driving member 3420, a locking member 3430, a securing bracket 3440, a pushing member 3460, a first resetting member 3451, a second resetting member 3452, a first guide rod3471, a second guide rod 3472, and a limiting pin 3473. In this embodiment, the crotch belt body 3230 of the crotch belt set 3200 may be made of a rigid material such as rubber, or a flexible material such as nylon etc.

[0228] Furthermore, as shown in Figs. 32 to 34, structure and functional relations of the mounting base 3410, the driving member 3420, the locking member 3430, and the first resetting member 3451 in this embodiment are substantially the same as those in the first embodiment. The structure of the securing bracket 3440 in this embodiment is substantially the same as that of the securing bracket 3440 in the previous embodiment, with the exception that the left and right sides of the frame body 3441 of the securing bracket 3440 in this embodiment is not provided with the passage holes, through which the fasteners may pass, instead, three passage holes are provided on each of the left and right sides of the frame body 3441, through which the first guide rod 3471, the second guide rod 3472, and the limiting pin 3473 may pass.

[0229] Furthermore, as shown in Figs. 32 to 34, the harness assembly 320 in this embodiment may not include a rotating base 3500, but rather the flexible crotch belt body 3230 is directly wound and secured to a pin shaft 3600 that is pivotally connected between two first securing portions 3442. Certainly, the crotch belt body 3230 in this embodiment may also be the same as that in the first embodiment, that is, it may be rotatably disposed on the rigid crotch belt body 3230 of the seat portion 311 by the rotating base 3500.

[0230] Furthermore, as shown in Figs. 32 to 34, the pushing member 3460 is movably disposed in the first mounting slot 34121 of the mounting base 3410, that is, the pushing member 3460 may be movable relative to the mounting base 3410 and the securing bracket 3440. In this embodiment, the pushing member 3460 includes a pushing portion 3461 and a winding end 3462 connected with each other and a second limiting rod 3463 that is spaced from the winding end 3462. The pushing member 3460 may move between the third position and the fourth position relative to the securing bracket 3440, the pushing portion 3461abuts against the driving member 3420, and the adjustment belt 3300 is at least partially wound around the winding end 3462. A moving direction of the driving member 3420 intersects a moving direction of the pushing member 3460. In this embodiment, the moving direction of the driving member 3420 refers to a front-and-rear direction along the carrier body 310 (i.e., the first direction 3D1 and its opposite direction), and the moving direction of the pushing member 3460 refers to an up-and-down direction along the carrier body 310 (i.e., the second direction 3D2 and its opposite direction), that is, the moving direction of the driving member 3420 is perpendicular to the moving direction of the pushing member 3460. When the adjustment belt 3300 is switched from the relaxed state to the tightened state, the adjustment belt 3300 pushes against the winding end 3462, to move the pushing member 3460 from the fourth position (see Fig. 30) to the third position (see Fig. 31), and the pushing portion 3461 pushes the driving member 3420 to move the locking member 3430 to the first position.

[0231] Specifically, the driving member 3420 and the pushing member 3460 are disposed along the front-and-rear direction of the carrier body 310, that is, the driving member 3420 is arranged on the first direction 3D1 of the pushing member 3460. There are two pushing portions 3461, which are arranged at intervals along the left-and-right direction of the carrier body 310. A pushing slope 34611 and a pushing plane 34612 are provided on a side of the pushing portion 3461 facing the driving member 3420. The pushing slope 34611 is arranged in the second direction 3D2 of the pushing plane 34612 and is inclined towards a direction opposite to the first direction 3D1 relative to the pushing plane 34612. A cooperating slope 34214 and a cooperating plane 34215 are correspondingly arranged on a side of the driving member 3420 facing the pushing portion 3461. The cooperating slope 34214 is arranged in the first direction 3D1 of the cooperating plane 34215 and is inclined towards the first direction 3D1 relative to the cooperating plane 34215. When the driving member 3420 is in the third position, the pushing slope 34611 abuts against thecooperating slope 34214, and when the driving member 3420 moves from the third position along the first direction to the fourth position, the pushing plane 34612 abuts against the pushing slope 34611.

[0232] In this embodiment, as shown in Figs. 32 to 34, the winding end 3462 has an arc-shaped winding face 34621, the first limiting rod 34112 and the winding face 34621 are arranged at intervals and located below the winding face 34621. A second passage hole 3464, through which the adjustment belt 3300 is threaded, is formed between the winding face 34621 and the second limiting rod 3463. The left and right sides of the mounting portion 3412 of the mounting base 3410 are also provided with through-holes 34122 that may be communicated with the first mounting slot 34121. The pushing member 3460 has an overall hollow structure, in which a through-slot 3465 extending along a direction from the third position to the fourth position is provided, the limiting pin 3473 passes through the through-holes 34122 and the through-slot 3465 to limit a movement stroke of the pushing member 3460.

[0233] Furthermore, as shown in Figs. 32 to 34, the second resetting member 3452 constantly moves the pushing member 3460 towards the fourth position. Specifically, the pushing member 3460 is provided with a second mounting slot 3466, and the second resetting member 3452 is disposed in the second mounting slot 3466. In this embodiment, the second mounting slot 3466 is arranged between the two pushing portions 3461 and is communicated with the through-slot 3465. The second mounting slot 3466 is arranged substantially along the up-and-down direction of the carrier body 310, that is, the second direction 3D2. The bottom of the second mounting slot 3466 is provided with a second sleeve boss 3467. One end of the second resetting member 3452 is sleeved on the second sleeve boss 3467 and abuts against the bottom of the second mounting slot 3466, and the other end of the second reset member 3452 abuts against the securing bracket 3440.

[0234] Furthermore, as shown in Figs. 32 to 34, the first guide rod 3471 and the second guide rod 3472 are arranged on both sides of the pushing member 3460.Specifically, the first guide rod 3471 and the second guide rod 3472 extend substantially along the left-and-right direction of the carrier body 310, that is, along the third direction 3D3; and the first guide rod 3471 and the second guide rod 3472 are spaced apart along the first direction 3D1, the pushing member 3460 is arranged between the first guide rod 3471 and the second guide rod 3472, and the first guide rod 3471 and the second guide rod 3472 are arranged above a lowest point of the winding end 3462 of the pushing member 3460. The first guide rod 3471 and the second guide rod 3472 may pass through the passage holes on the left and right sides of the frame body 3441 and are secured to the securing bracket 3440, and the first guide rod 3471 and the second guide rod 3472 are both arranged below the mounting base 3410.

[0235] Hereinafter, the winding method of the adjustment belt 3300 in the self-locking mechanism 3400 will be described.

[0236] As shown in Figs. 30 to 32, the fifth end 3310 of the adjustment belt 3300 is secured to the seat portion 311 by the length adjustment mechanism 3700. The sixth end of the adjustment belt 3300 extends into the receiving chamber 311a through the opening 111b, and then enters the first mounting slot 34121, and extends out of the first mounting slot 34121 through the pulling gap 3101 after passing around the locking member 3430, and then winds around an arc-shaped outer wall 34111 of the winding portion 3411 of the mounting base 3410, and then passes through a gap between the first guide rod 3471 and the bottom of the mounting base 3410, and is wound around the arc-shaped winding face 34621 of the winding end 3462 of the pushing member 3460, and passes through the gap between the second guide rod 3472 and the bottom of the mounting base 3410 again after bypassing through the second passage hole 3464 between the winding face 34621 and the second limiting rod 3463, and then extends to the rear of the backrest portion 312 to connect with the second end of the shoulder belt set 3100.

[0237] Thus, when the shoulder belt buckle 3130 and the crotch belt buckle 3240 are not fastened, or when the adjustment belt 3300 is in the relaxed state, asshown in Fig. 30, the adjustment belt 3300 does not abut against the pushing member 3460, and the pushing member 3460 is at the fourth position under the elastic force of the second resetting member 3452, and the pushing slope 34611 of the pushing member 3460 abuts against the cooperating slope 34214 of the driving member 3420. As previously described, since the pushing slope 34611 is positioned in the second direction 3D2 of the pushing plane 34612 and is inclined towards the direction opposite to the first direction 3D1 relative to the pushing plane 34612, the driving member 3420 is at the relatively rearward second position under the elastic force of the first resetting member 3451. At this time, the pulling gap 3101 between the locking member 3430 and the limiting portion 34412 becomes large, and the adjustment belt 3300 disposed in the pulling gap 3101 may move freely.

[0238] When the child is seated in the carrier body 310, the shoulder belt buckle 3130 and the crotch belt buckle 3240 may be fastened, and the adjustment belt 3300 may be pulled to an appropriate length. When the adjustment belt 3300 is pulled, it presses against the winding end 3462 of the pushing member 3460, to move the pushing member 3460 in the second direction 3D2, such that the pushing slope 34611 may gradually move up and away from the cooperating slope 34214, and then the pushing plane 34612 pushes the cooperating slope 34214 to move away from the cooperating slope 34214 and abut against the cooperating plane 34215 while the second resetting member 3452 is compressed and deformed in this process. As previously described, the cooperating slope 34214 is positioned in the first direction 3D1 of the cooperating plane 34215 and is inclined towards the first direction 3D1 relative to the cooperating plane 34215. Therefore, it is equivalent that at this time the pushing member 3460 pushes the driving member 3420 to the first position in the first direction 3D1 while the first resetting member 3451 is compressed and deformed. The pulling gap 3101 becomes small, and the adjustment belt 3300 is restricted between the limiting portion 34412 and the locking member 3430 and cannot move. If theadjustment belt 3300 is forcibly continued to be tightened, that is, the length of the adjustment belt 3300 is shortened, the pulling gap 3101 will become smaller and smaller, and the adjustment belt 3300 will be further clamped between the limiting portion 34412 and the locking member 3430, so that the user cannot pull the adjustment belt 3300. This can avoid the harness assembly 320 from being overly tightened, which may affect the comfort of the child or cause other safety hazards.

[0239] The above described harness assembly 320 and the child carrier as above mentioned have at least the following technical effects:

[0240] In the above described harness assembly 320, the third end 3210 of the crotch belt set 3200 is connected to the carrier body 310, the fourth end 3220 of the crotch belt set is connected to the first end 3110 of the shoulder belt set 3100, the second end of the shoulder belt set 3100 is connected to the sixth end of the adjustment belt 3300, and the fifth end 3310 of the shoulder belt set 3100 is connected to the carrier body 310, thereby forming a restraint structure that can secure the child to the carrier body 310. A self-locking mechanism 3400 is provided between the third end 3210 and the fourth end 3220 of the adjustment belt 3300, and the adjustment belt 3300 passes through the self-locking mechanism 3400 to form a linkage with the self-locking mechanism 3400. When the first end 3110 of the shoulder belt set 3100 is connected to the fourth end 3220 of the crotch belt set 3200 and the adjustment belt 3300 is in the tightened state, the self-locking mechanism 3400 can lock the adjustment belt 3300 to restrict the movement of the adjustment belt 3300, thereby avoiding the harness assembly 320 from being overly tightened, which may affect the comfort of the child or cause other safety hazards.

[0241] Since the features of the present disclosure can be embodied in various forms without departing from the features of the present disclosure, it should further be understood that the above embodiments are not limited to any details described above, unless otherwise noted, but should be broadly interpreted as being within the scope defined by the appended claims. Therefore, allmodifications and amendments falling within the scope and limits of the claims or the equivalent solutions of such scope and limits shall be covered by the appended claims.

Claims

WHAT IS CLAIMED IS:

1. A harness assembly for a child carrier, the child carrier further comprising a carrier body, characterized in that the harness assembly comprises: a shoulder belt set having a first end and a second end; a crotch belt set having a third end and a fourth end, the third end being connected to the carrier body, and the fourth end being removably connected to the first end; an adjustment belt having a fifth end and a sixth end, the fifth end being connected to the carrier body, and the sixth end being connected to the second end, the adjustment belt being switchable between a tightened state and a relaxed state; and a self-locking mechanism disposed between the fifth end and the sixth end; wherein the adjustment belt passes through the self-locking mechanism to form a linkage with the self-locking mechanism, when the fourth end is connected to the first end and the adjustment belt is in the tightened state, the shoulder belt set is in a fully tightened state, and the self-locking mechanism locks the adjustment belt to restrict movement of the adjustment belt and the shoulder belt set.

2. The harness assembly according to claim 1, characterized in that the self-locking mechanism comprises: a limiting portion secured to the carrier body; and a locking member movable between a first position close to the limiting portion and a second position away from the limiting portion; wherein a pulling gap is formed between the locking member and the limiting portion, and the adjustment belt is at least partially disposed within the pulling gap; wherein when the crotch belt set is switched from the relaxed state to the tightened state, the crotch belt set is capable of moving the driving member such that the driving member moves the locking member to the first position.

3. The harness assembly according to claim 2, characterized in that thecrotch belt set is switchable between the tightened state and the relaxed state; the drive member is movable relative to the limiting portion and drivingly connected to the crotch belt set, the locking member being mounted on the driving member.

4. The harness assembly according to claim 2 or 3, characterized in that further comprising: a rotating base rotatably disposed on the carrier body and connected to the third end, the rotating base being rotatable between a first rotation position and a second rotation position; wherein when the crotch belt set is in the tightened state, the rotating base is in the first rotation position to move the locking member to the first position.

5. The harness assembly according to anyone of the preceding claims 2 to 4, characterized in that the self-locking mechanism further comprises: a pushing member movable between a third position and a fourth position, the pushing member having a winding end, the adjustment belt being at least partially wound on the winding end; wherein movement directions of the locking member and the pushing member intersect, when the adjustment belt is switched from the relaxed state to the tightened state, the adjustment belt pushes the winding end to move the pushing member from the fourth position to the third position and move the locking member to the first position. position.

6. The harness assembly according to anyone of the preceding claims 2 to 5, characterized in that the self-locking mechanism further comprises: a driving member movable relative to the limiting portion, the locking member being mounted on the driving member; and a pushing member movable relative to the carrier body between the third position and the fourth position, the pushing member having a pushing portion abutting against the driving member; wherein the pushing member moves from the fourth position to the thirdposition, and the pushing portion pushes the driving member to move the locking member to the first position.

7. The harness assembly according to claim 5 or 6, characterized in that the self-locking mechanism further comprises: a first resetting member biasing the driving member to move the locking member towards the second position; and a second resetting member biasing the pushing member towards the fourth position.

8. The harness assembly according to anyone of the preceding claims 5 to 7, characterized in that further comprising: a mounting base secured to the carrier body and having a first mounting slot; wherein the locking member is disposed within the first mounting slot, the sixth end, after bypassing the locking member, passes through the pulling gap and exits the first mounting slot, then winds around the winding end after bypassing an outer wall of the mounting base to connect to the second end; the self-locking mechanism further comprises a first guide rod and a second guide rod secured to the carrier body, the first guide rod and the second guide rod are respectively positioned on both sides of the pushing member; the sixth end passes through the outer wall of the mounting base, and then winds around the winding end by bypassing the first guide rod, and further winds around the second guide rod to connect with the second end.

9. The harness assembly according to anyone of the preceding claims 5 to 8, characterized in that the self-locking mechanism further comprises: a limiting pin; and a mounting base secured to the carrier body and having a first mounting slot, the mounting base further having a through-hole communicated with the first mounting slot; wherein the pushing member is at least partially positioned within the first mounting slot, and the pushing member is provided with a through-slot extending in a direction from the third position to the fourth position, the limiting pin passesthrough a through-hole and the through-slot to restrict the movement of the pushing member.

10. A child carrier, comprising a carrier body and the harness assembly, characterized in that the harness assembly comprises: a shoulder belt set having a first end and a second end; a crotch belt set having a third end and a fourth end, the third end being connected to the carrier body, and the fourth end being removably connected to the first end; an adjustment belt having a fifth end and a sixth end, the fifth end being connected to the carrier body, and the sixth end being connected to the second end; and a self-locking mechanism disposed between the fifth end and the sixth end; wherein the self-locking mechanism comprises: a limiting portion secured to the carrier body; a driving member movable relative to the limiting portion and drivingly connected to the crotch belt set; and a locking member movable between a first position close to the limiting portion and a second position away from the limiting portion; wherein a pulling gap is formed between the locking member and the limiting portion, and the adjustment belt is at least partially disposed within the pulling gap; when the fourth end of the crotch belt set is connected to the first end of the shoulder belt set, the drive member moves the locking member toward the first position to restrict the movement of the adjustment belt.

11. The child carrier according to claim 10, characterized in that the seat belt assembly further comprises a length adjustment mechanism, the fifth end of the adjustment belt being secured to the front end of the carrier body by the length adjustment mechanism; the length adjusting mechanism is capable of being switchable between a locked state and an unlocked state, when the length adjustment mechanism is inthe unlocked state, it is capable of adjusting the elongation and shortening of the length of the adjustment belt; when the length adjustment mechanism is in the locked state, it is capable of adjusting the shortening of the length of the adjustment belt.

12. A child safety seat, characterized in that the child safety seat comprising: a seat body (21); a harness buffer mechanism (2800) disposed inside the seat body (21); and a harness assembly (2600) comprising a fixed end secured to the seat body (21) and a free end, the free end being threaded through the harness buffer mechanism (2800), wherein the harness buffer mechanism (2800) comprises: a securing bracket (2810) securely connected to the seat body (21); a buffer member (2820) movably disposed on the securing bracket (2810) and having a first position and a second position, the harness assembly (2600) being configured to partially surround the buffer member (2820); an elastic member (2840) disposed between the securing bracket (2810) and the buffer member (2820), or between the seat body (21) and the buffer member (2820), and biased against the buffer member (2820) towards the first position; and a guide (2830) disposed at the securing bracket (2810) and used to guide the harness assembly (2600) through the harness buffer mechanism (2800), so that a length of the harness assembly (2600) in contact with the buffer member (2820) when the buffer member (2820) is in the first position is greater than a length of the harness assembly (2600) in contact with the buffer member (2820) when the buffer member (2820) is in the second position.

13. The child safety seat according to claim 12, characterized in that the seat body (21) comprises a backrest portion (2300) and a seat portion (2200), the harness buffer mechanism (2800) being disposed in the seat portion (2200), wherein the seat body (21) further comprises a harness length adjustment structure (2100), the harness length adjustment structure (2100) is disposed in theseat portion (2200), and the free end of the harness assembly (2600) is operably locked to the harness length adjustment structure (2100).

14. The child safety seat according to claim 12 or 13, characterized in that the harness assembly (2600) includes a shoulder belt (2610) and an adjustment belt (2630), the adjustment belt (2630) is threaded through the harness buffer mechanism (2800), and the shoulder belt (2610) connects the seat body (21) and the adjustment belt (2630).

15. The child safety seat according to anyone of the preceding claims 12 to 14, characterized in that the securing bracket (2810) is provided with a buffer slot (2816), the buffer member (2820) is slidably embedded in the buffer slot (2816); the harness buffer mechanism (2800) further comprises a limiting pin (2860) that slides in the buffer slot (2816) and supports and drives the buffer member (2820) to move.

16. The child safety seat according to claim 15, characterized in that the buffer slot (2816) is perpendicular to the adjustment belt (2630), for buffering force of the adjustment belt (2630) in a vertical direction; the buffer member (2820) is configured as an arc on one side facing the adjustment belt (2630), has a width corresponding to the width of the adjustment belt (2630), and abuts against the elastic member (2840) on the other side; and the elastic member (2840) is a compression spring or a tension spring.

17. The child safety seat according to claim 14, 15 or 16, characterized in that the guide (2830) is configured as two guide rods (2830) on both sides of the buffer member (2820) along the adjustment belt (2630), the guide rods (2830) are rotatably supported in the securing bracket (2810), for guiding the adjustment belt (2630), the guide rods (2830) are configured such that a direction in which the adjustment belt (2630) is threaded into the harness buffer mechanism (2800) is parallel to a direction in which the adjustment belt (2630) is threaded out of the harness buffer mechanism (2800).

18. The child safety seat according to anyone of the preceding claims 12 to 17, characterized in that the securing bracket (2810) has an upper wall (2811) andtwo side walls (2812) perpendicular to the upper wall (2811), the side wall (2812) is shaped as an inverted trident, having one middle portion provided with a buffer support (2814) that has the buffer slot (2816) for pivotally supporting the buffer member (2820), two sides respectively provided with guide rod supports (2815) for pivotally supporting the guide rods (2830).

19. The child safety seat according to any one of the preceding claims 14 to18, characterized in that the guide (2830) is configured as a guide rod (2830), the guide rod (2830) is rotatably supported in the securing bracket (2810), for changing a movement direction of the adjustment belt (2630), wherein the buffer member (2820) is configured as a buffer rod (2820) and the elastic member (2840) is a tension spring, two ends of the tension spring are fixed to the securing pin (2870) and the buffer rod (2820), respectively.

20. The child safety seat according to any one of the preceding claims 12 to19, characterized in that the securing bracket (2810) has an upper wall (2811) and two side walls (2812) perpendicular to the upper wall (2811), a securing pin support (2818) is arranged on one side of the side wall (2812), for pivotally supporting the securing pin (2870), the securing pin support (2818) is configured to form a notch (2819) on the side wall (2812), an edge of the notch (2819) is in contact with the bottom wall (2212) and the rear wall (2213) of the opening portion (2210) of the seat body (21); the buffer slot (2816) and a perforation (2817) for securing the guide rod (2830) are arranged on the other side of the side wall (2812), the buffer slot (2816) has a height as same as the securing pin (2870), the perforation (2817) is at a height of the bottom wall (2212).

21. The child safety seat according to any one of the preceding claims 13 to20, characterized in that the backrest portion (2300) is provided with a reinforcement rod (2310), and each of the shoulder belts (2610) is configured to pass over the reinforcement rod (2310) from an upper portion of the backrest portion (2300) in a bottom-up manner and then connect to the adjustment belt (2630).

22. The child safety seat according to any one of the preceding claims 12 to21, characterized in that the guide (2830) is arranged between the first position and the second position in an extension direction of the harness assembly (2600); the length of the harness assembly (2600) in contact with the buffer member (2820) when the buffer member (2820) is in the first position is more than twice the length of the harness assembly (2600) in contact with the buffer member(2820) when the buffer member (2820) is in the second position.

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