Foldable child safety seat

Abstract

The present disclosure provides a foldable child safety seat, comprising: a seat portion comprising a seat portion body and armrest portions, wherein a receiving groove is formed between the seat portion body and each armrest portion; and a backrest portion comprising a first backrest portion and a second backrest portion, wherein the first backrest portion is pivotably connected to the seat portion and can rotate between a use position and a folded position, and the second backrest portion is slidably connected to the first backrest portion so as to adjust the length of the backrest portion; when the backrest portion is in the folded position, the second backrest portion can slide relative to the first backrest portion so that part of the second backrest portion is engaged in the receiving groove. The pivot unlocking mechanism of the child safety seat according to the present disclosure has a simple structure.

Description

Foldable child safety seat Technical Field

[0001] This disclosure relates to infant and child products, and more particularly to a foldable child safety seat. Background Technology

[0002] Some existing child safety seats on the market use a pivot connection between the backrest and the seat. When not in use, the backrest can be rotated towards the seat to fold, thus reducing storage space. In some existing foldable child safety seats, the pivot release mechanism for unlocking the backrest relative to the seat is complex and inconvenient to operate.

[0003] In current foldable child safety seat designs, interference often occurs when attempting to pivot the backrest towards the seat surface. Specifically, the side wings of the backrest may be obstructed by the lateral sides of the seat, preventing the backrest from fitting snugly against the seat surface. To address this issue, some child safety seat designs incorporate movable components on the sides of the seat. However, these movable components must be slid into the seat housing before pivoting the backrest; this extra step not only increases design complexity but also makes operation more difficult.

[0004] In addition, in current foldable child safety seats, when the backrest is pivoted towards the seat, the side wings on both sides of the backrest are often obstructed by the lateral sides of the seat, preventing the backrest from fitting snugly against the seat surface. This results in the child safety seat still taking up a lot of space after being folded, which is not conducive to its storage. Summary of the Invention

[0005] The purpose of this disclosure is to provide a foldable child safety seat with a simple and easy-to-operate pivot release mechanism.

[0006] According to the present disclosure, a foldable child safety seat is proposed, comprising: a seat portion including a seat body and an armrest portion, wherein a receiving groove is formed between the seat body and the armrest portion; and a backrest portion including a first backrest portion and a second backrest portion, wherein the first backrest portion is pivotally connected to the seat portion and is rotatable between a use position and a folded position, and the second backrest portion is slidably connected to the first backrest portion to adjust the length of the backrest portion; when the backrest portion is in the folded position, the second backrest portion can engage a portion thereof within the receiving groove by sliding relative to the first backrest portion.

[0007] In one embodiment, the second backrest includes a second backrest body and a backrest side wing. The lower part of the side wing of the backrest has a flat portion protruding from the outside of the second backrest body. The flat portion and the second backrest body form a stepped structure. When the backrest is in the folded position, the backrest side wing clamps the seat body from both sides laterally, and the flat portion is limited by the armrest, thereby keeping the backrest in the folded position.

[0008] In one embodiment, the child safety seat further includes: a pivot locking mechanism disposed between the first backrest and the seat, capable of locking the backrest relative to the seat in one of a plurality of said use positions; a pivot release operation member disposed on the first backrest, operable to release the pivot locking mechanism; a movement locking mechanism disposed between the first backrest and the second backrest, capable of locking the second backrest relative to the first backrest in one of a plurality of sliding positions; and a movement release mechanism disposed on the second backrest, capable of releasing the movement locking mechanism.

[0009] In one embodiment, the child safety seat further includes a linkage rotatably disposed on the first backrest portion. A first end of the linkage is driven by the pivot release mechanism, such that movement of the pivot release mechanism causes rotation of the linkage. Movement of the second end of the linkage release mechanism releases the pivot locking mechanism. One of the pivot release mechanism and the first end of the linkage release mechanism is provided with an inclined elongated groove, the extension direction of which is inclined to the movement direction of the pivot release mechanism. The other end is provided with a sliding pin that can slide along the inclined elongated groove. Movement of the second end of the linkage release mechanism is transmitted to the pivot locking mechanism through a transmission member.

[0010] In one embodiment, the pivot locking mechanism includes: a first pivot locking groove formed in the seat portion; a second pivot locking groove formed in the first backing portion; and a pivot locking member movable between a locked position and an unlocked position, the pivot locking member being configured to engage with both the first pivot locking groove and the second pivot locking groove simultaneously in the locked position, and to disengage from one of the first pivot locking groove and the second pivot locking groove in the unlocked position, wherein a second end of the linkage member is capable of driving the pivot locking member to the unlocked position.

[0011] In one embodiment, the first pivot locking groove and the second pivot locking groove are respectively formed with internal teeth, and the pivot locking member is formed with external teeth that engage with the internal teeth.

[0012] In one embodiment, the seat portion is provided with a mounting protrusion, the first backing portion is provided with a mounting recess that mates with the mounting protrusion, the first pivot locking groove is formed at the lateral end face of the protrusion of the mounting protrusion, and the second pivot locking groove is formed at the lateral end face of the recess of the mounting recess.

[0013] In one embodiment, a pivot axis for the first backrest to pivot about is disposed within the mounting protrusion such that the pivot axis is higher than the upper surface of the seat body.

[0014] In one embodiment, the safety seat further includes: a movable locking mechanism disposed between the first backrest and the second backrest, capable of locking the second backrest relative to the first backrest in one of a plurality of sliding positions; and a movable release mechanism disposed on the second backrest and capable of releasing the movable locking mechanism. The movable locking mechanism includes: a movable locking groove formed in one of the first backrest and the second backrest; and a movable locking member formed in the other of the first backrest and the second backrest and movable between a locked position and a released position. The movable locking member is configured to engage with the movable locking groove in the locked position and disengage from the movable locking groove in the released position. The movable release mechanism includes a movable release operating member operable to drive the movable locking member to the released position. The movable release operating member includes a movable release operating member exposed portion, which is exposed in the second backrest and configured not to be obstructed by the first backrest.

[0015] In one embodiment, the second backrest includes a second backrest body and a pair of backrest side wings, each of the backrest side wings including an upper side wing and a lower side wing, the lower side wing protruding outward relative to the upper side wing. When the backrest is in the folded position, the lower side wing clamps the seat body from both sides laterally, and the lower side wing is blocked by the armrest, thereby keeping the backrest in the folded position.

[0016] The beneficial effect of this disclosure is that the pivot release mechanism of the child safety seat according to this disclosure has a simple structure.

[0017] According to the present disclosure, a foldable child safety seat is proposed, comprising: a seat portion; a backrest portion pivotally connected to the seat portion, the backrest portion being pivotable between an unfolded position and a folded position; and a pivot locking mechanism disposed between the seat portion and the backrest portion, the pivot locking mechanism being capable of locking the backrest portion in the unfolded position, wherein the seat portion includes a seat portion body and a movable component, the movable component being movably connected to the seat portion body; the movable component being movable relative to the seat portion body between a working position and a non-working position to change the seating size of the seat portion, the child safety seat further comprising: a movable component locking mechanism disposed between the seat portion body and the movable component, and capable of locking the movable component in the working position; and a release mechanism including a release operating member, the release operating member being linked with the pivot locking mechanism and the movable component locking mechanism, and being operable to drive the pivot locking mechanism and the movable component locking mechanism to release.

[0018] In one embodiment, the movable component includes a seat side wing slidably connected to the seat body. When the seat side wing is in the working position, it extends out of the seat body, and when the seat side wing is in the non-working position, it retracts at least partially into the seat body.

[0019] In one embodiment, one of the seat side wing and the seat body is provided with an arc-shaped groove with a preset curvature, and the other is provided with a slider. The slider is slidably engaged with the arc-shaped groove so that the seat side wing can slide relative to the seat body along an arc-shaped trajectory between the working position and the non-working position.

[0020] In one embodiment, the slide groove includes a front slide groove disposed on the front side of the seat side wing and a rear slide groove disposed on the rear side of the seat side wing. The curvature of the front slide groove is greater than that of the rear slide groove, so that the seat side wing moves forward toward the seat body during the process of sliding from the working position to the non-working position.

[0021] In one embodiment, the outer side of the seat wing is provided with a side wing tilting portion, the tilting direction of the side wing tilting portion corresponding to the bending direction of the arc-shaped slide groove, so that during the pivoting process of the backrest portion toward the seat body, the backrest side wing of the backrest portion pushes the side wing tilting portion, causing the seat wing to move along the arc-shaped trajectory into the interior of the seat body.

[0022] In one embodiment, the side wing locking member includes a side wing locking pin, and the movable component locking mechanism further includes a groove locking hole disposed in the arc-shaped groove and a slider locking hole disposed in the slider, such that when the seat side wing is in the working position, the groove locking hole and the slider locking hole are aligned, and the side wing locking pin can be inserted into the groove locking hole and the slider locking hole to lock the seat side wing in the working position.

[0023] In one embodiment, the release mechanism includes a pivot locking pin and a release drive member, and the release operation member is connected to the pivot locking pin and the release drive member respectively; the backrest portion is provided with the pivot locking groove, and the pivot locking pin and the pivot locking groove can engage with each other to lock the backrest portion relative to the seat portion in the unfolded position.

[0024] During the movement of the release mechanism, the release mechanism drives the pivot locking pin out of the pivot locking groove and drives the release drive to unlock the side locking pin.

[0025] In one embodiment, the child safety seat further includes a side wing reset elastic member, one end of which is connected to the seat body and the other end of which is connected to the seat side wing. The side wing reset elastic member is configured to provide a force to the seat side wing to move in the direction of the working position.

[0026] In one embodiment, the movable component includes a seat side wing, wherein the lateral width of the seat when the seat side wing is in the working position is greater than the lateral width of the seat when the seat side wing is in the non-working position, wherein the seat side wing can extend beyond the seat body or at least partially retract into the seat body; or, the seat side wing can rotate between the side and top surfaces of the seat body; or, the seat side wing can be detachably mounted on the seat body.

[0027] According to another aspect of this disclosure, a foldable child safety seat is proposed, comprising: a seat portion; and a backrest portion pivotally connected to the seat portion, the backrest portion being pivotable between an unfolded position and a folded position; wherein the seat portion includes a seat portion body and a movable component, the movable component being movably connected to the seat portion body; the movable component being movable relative to the seat portion body between a working position and a non-working position to change the seating size of the seat portion, the child safety seat further comprising: a movable component locking mechanism disposed between the seat portion body and the movable component, and capable of locking the movable component in the working position; and a release traction line, a first end of the release traction line being connected to the backrest portion, and a second end of the release traction line being connected to the movable component locking mechanism, such that when the backrest portion pivots relative to the seat portion from the unfolded position to the folded position, the backrest portion pulls the release traction line to cause the movable component locking mechanism to release.

[0028] The beneficial effect of this disclosure is that the release mechanism of the child safety seat according to this disclosure can release both the pivot locking mechanism and the moving component locking mechanism, and the structure is simple.

[0029] According to one aspect of this disclosure, a child safety seat is proposed, comprising: a seat portion, a backrest portion, and a component pivotally connected to the seat portion and pivoting relative to the seat portion between a use position and a storage position; wherein, the backrest portion includes: a backrest body, and two side wings located on both sides of the backrest body, each side wing including a movable side wing, the movable side wing being movably connected to both sides of the backrest body via a connecting mechanism and capable of moving laterally relative to the backrest body between an expanded position and a folded position, the connecting mechanism being configured such that, during the process of the backrest portion pivoting relative to the seat portion to the storage position, the movable side wing is pushed by the seat portion and moves toward the expanded position.

[0030] In one embodiment, the connecting mechanism includes a pivot structure and a resilient reset member, wherein the upper part of the movable side wing is pivotally connected to the upper part of the backing body via the pivot structure, and the resilient reset member is configured to tend to move the movable side wing to the retracted position.

[0031] In one embodiment, the pivoting structure includes a plurality of pivot members that engage with each other. The pivot members are respectively disposed on the backrest body and the upper side wing movable side wing, such that the movable side wing pivots about a pivot axis relative to the backrest body. The side wing portion also includes a fixed side wing independent of the movable side wing. The fixed side wing is located below the movable side wing and is fixedly connected to the backrest body. A clearance portion is provided at the upper end of the backrest body near the pivot axis and / or at the upper end of the movable side wing near the pivot axis. The clearance portion is configured so that the movable side wing does not collide with the backrest body when pivoting toward the expanded position. The child safety seat also includes a headrest. A clearance gap is provided between the headrest and the movable side wing. The clearance gap is configured so that the movable side wing does not collide with the headrest when pivoting toward the expanded position.

[0032] In one embodiment, the plurality of pivoting elements includes a first pivot hole, a second pivot hole, and a pivot pin, wherein the first pivot hole is located on the upper part of the back body, the second pivot hole is located on the upper part of the movable side wing, and the first pivot hole and the second pivot hole allow the pivot pin to pass through.

[0033] In one embodiment, the connecting mechanism includes a limiting structure configured to limit the travel of the movable side wing relative to the backrest body in a lateral direction. The limiting structure includes a limiting hole on one of the backrest body and the movable side wing, a limiting groove on the other, and a limiting pin passing through the limiting hole and the limiting groove, the limiting pin being movable along the limiting groove.

[0034] In one embodiment, one of the backrest body and the movable side wing is provided with a mounting groove, and the other is provided with a mounting side that can engage with the mounting groove.

[0035] In one embodiment, the connecting mechanism includes a side wing adjustment structure, the movable side wing being movably connected to the backrest body via the side wing adjustment structure, such that the movable side wing can move laterally relative to the backrest body between the expanded position and the retracted position.

[0036] In one embodiment, the child safety seat further includes a headrest that is vertically movable relative to the backrest body. The side wing adjustment structure includes: a drive groove disposed on the movable side wing and having a vertically extending vertical section and an inclined section extending at an angle, the vertical section being located below the inclined section; a drive pin disposed on the headrest, the drive pin passing through the drive groove and being slidable along the drive groove; and a guide groove disposed on the movable side wing and extending laterally, communicating with the vertical section of the drive groove. The inclined section is configured such that when the headrest is raised relative to the backrest body, causing the drive pin to slide upward along the inclined section, the force exerted by the drive pin on the inclined section can drive the movable side wing to move toward an expanded position. The guide groove is configured such that when the headrest is in a low position relative to the backrest body, causing the drive pin to align with the guide groove, the guide groove allows the movable side wing to be pushed by the seat portion and moved toward the expanded position.

[0037] The beneficial effect of this disclosure is that when the backrest is pivoted relative to the seat to the storage position, the movable wing can move toward the open position without the caregiver having to apply force to it separately, so that the backrest body and the seat body fit more closely together. Attached Figure Description

[0038] In the attached diagram:

[0039] Figure 1 is a perspective view of a child safety seat according to the present disclosure.

[0040] Figure 2 is a side view of the child safety seat shown in Figure 1 in the unfolded state, wherein the second backrest of the backrest is not moved upward.

[0041] Figure 3 is a side view of the child safety seat shown in Figure 1 in the unfolded state, wherein the second backrest of the backrest is moved upward to a high position.

[0042] Figure 4 is a side view of the child safety seat shown in Figure 1 in the folded state, wherein the second backrest of the backrest is kept in a high position.

[0043] Figure 5 is a side view of the child safety seat shown in Figure 1 in the folded state, where the second backrest of the backrest is retracted below the armrest.

[0044] Figure 6 is an exploded perspective view of a child safety seat according to the present disclosure, wherein the second backrest of the backrest is moved upward to a high position.

[0045] Figure 7 is a perspective view of the seat of the child safety seat shown in Figure 1.

[0046] Figure 8 is a schematic diagram of the pivot protrusion of the backrest according to the present disclosure.

[0047] Figure 9 is a side sectional view of the mounting protrusion of the seat according to the present disclosure, wherein the first backrest is in the use position.

[0048] Figure 10 is a side sectional view of the mounting protrusion of the seat according to the present disclosure, wherein the first backrest is in a folded position.

[0049] Figure 11 illustrates an embodiment of the pivoting release mechanism and the moving release mechanism according to the present disclosure, wherein the pivoting locking member is in the locked position.

[0050] Figure 12 illustrates an embodiment of the pivoting release mechanism and the movable release mechanism according to the present disclosure, wherein the pivoting locking member is in the release position.

[0051] Figure 13 is a cross-sectional view taken along line AA of Figure 2, showing the pivot lock in the locked position.

[0052] Figure 14 is a cross-sectional view taken along line AA of Figure 2, showing the pivot lock in the unlocked position.

[0053] Figure 15 shows an embodiment of the movable locking mechanism and movable unlocking mechanism according to the present disclosure, wherein the second backing portion of the backing portion does not move upward.

[0054] Figure 16 illustrates an embodiment of the movable locking mechanism and movable unlocking mechanism according to the present disclosure, wherein the second backing portion of the backing portion moves upward to a high position.

[0055] Figure 17 is a perspective view of a child safety seat in an unfolded state according to an embodiment of the present disclosure.

[0056] Figure 18 is a top view of the child safety seat shown in Figure 17.

[0057] Figure 19 is a side view of a child safety seat in a folded state according to an embodiment of the present disclosure.

[0058] Figure 20 is a 3D view of the child safety seat shown in Figure 19.

[0059] Figure 21 is a rear view and a partial enlarged view of the child safety seat shown in Figure 17 when it is locked, in which the rear cover of the seat has been removed.

[0060] Figure 22 is a rear view and a partial enlarged view of the child safety seat shown in Figure 21 after it has been released.

[0061] Figure 23 shows a seat according to an embodiment of the present disclosure, wherein a seat wing on one side is retracted into the interior of the seat body.

[0062] Figure 24 is a bottom view of the child safety seat shown in Figure 17 with the seat cover removed, in which the side wings of the seat extend out of the main body of the seat on both sides.

[0063] Figure 25 is a bottom view of another configuration of the child safety seat shown in Figure 24, in which the side wings of the seat on both sides are retracted into the interior of the seat.

[0064] Figure 26 is a perspective view of the seat side wing according to an embodiment of the present disclosure.

[0065] Figure 27 is a partial view of the internal structure of a seat according to an embodiment of the present disclosure, wherein the seat side wings extend out of the seat body.

[0066] Figure 28 is a perspective view of another state of the internal structure of the seat shown in Figure 27, in which the side wings of the seat are retracted into the interior of the main body of the seat.

[0067] Figure 29 is a partial view of the internal structure of the seat according to an embodiment of the present disclosure, wherein the release mechanism does not release the locking mechanism of the active component.

[0068] Figure 30 is a partial view of another state of the seat shown in Figure 29, in which the release mechanism releases the locking mechanism of the movable component.

[0069] Figure 31 is a rear view and a partial enlarged view of a child safety seat according to another embodiment of the present disclosure.

[0070] Figure 32 is a perspective view of a child safety seat according to another embodiment of the present disclosure, wherein the seat side wings are detachable from the seat body.

[0071] Figure 33 is a perspective view of a child safety seat according to another embodiment of the present disclosure, wherein the seat side wings are flipped onto the upper surface of the seat body.

[0072] Figure 34 is a perspective view of the child safety seat in the use position according to the first embodiment.

[0073] Figure 35 is a rear view of the child safety seat shown in Figure 34, with the movable side wings in the folded position.

[0074] Figure 36 is a rear view of the child safety seat shown in Figure 34, with the movable side wings in the extended position.

[0075] Figures 37 and 34 show partially exploded diagrams and enlarged views of child safety seats.

[0076] Figure 38 is a side view of the child safety seat in the stowed position according to the first embodiment.

[0077] Figure 39 is a top view of the child safety seat in the stowed position according to the first embodiment.

[0078] Figure 40 is a partial sectional view of the child safety seat shown in Figure 39 along section line IV-IV.

[0079] Figure 41 is a rear view of a child safety seat according to a second embodiment, wherein the movable side wings are in the folded position.

[0080] Figure 42 is a rear view of the child safety seat shown in Figure 41, where the movable side wings are in the extended position with the headrest raised.

[0081] Figure 43 is a rear view of the child safety seat shown in Figure 41, where the movable side wings are in the extended position with the headrest not raised.

[0082] The reference numerals in the attached drawings are explained as follows: 1 Child safety seat 100 Seat 110 Mounting protrusion 111 Lateral end face of protrusion 120 Seat body 130 Armrest 140 Receiving groove 200 Backrest 210 Mounting recess 211 Lateral end face of recess 220 Pivot axis 230 First backrest 231 Pivoting protrusion 240 Second backrest 241 Second backrest body 242 Headrest 243 Backrest side wing 243A Upper part of side wing 243B Lower part of side wing 244 Flat part 300 Pivot locking mechanism 310 First pivot locking groove 320 Second pivot locking groove 330 Pivot locking member 331 External tooth 340 Internal tooth 350 Locking elastic member 400 Pivot release mechanism 410 Pivot release operation member 411 Inclined long groove 412 Exposed part of pivot release operation member 420 Linkage component 421 First end 422 Second end 423 Sliding pin 424 Linkage component rotation shaft 430 Transmission component 440 Pivoting elastic component 500 Moving locking mechanism 510 Moving locking groove 520 Moving locking component 600 Moving release mechanism 610 Moving release operation component 611 Moving release operation component exposed part 620 Moving elastic component M1 Child safety seat M100 Seat M101 Seat body M110 Mounting protrusion M120 Seat upper surface M130 Slider M131 Rear slider M132 Front slider M140 Seat upper cover M150 Seat lower cover M170 Receiving recess M200 Backrest M210 Backrest side wing M220 Headrest M230 Backrest pivot part M300 Pivoting locking mechanism M310 Pivoting locking component, pivot locking pin M320 Pivoting locking groove M400; Release mechanism M410; Release operating element M412; Release operating element exposed part M413; Operating element reset elastic element M420; Release drive element M421; Release drive rod M422; Release traction line M422A; First end M422B; Second end M500; Movable component locking mechanism M510; Side wing locking element, side wing locking pin M511; Rear side wing locking pin M512; Front side wing locking pin M520; Slide lock hole M600; Movable component.Seat side wing M610, Side wing tilting part M620, Slide groove M621, Rear slide groove M622, Front slide groove M630, Side wing return elastic element M640, Side wing release button N1, Child safety seat N100, Backrest part N110, Backrest body N120, Side wing part N121, Movable side wing N121A, Drive part N122, Fixed side wing N200, Seat part N210, Seat body N270, Armrest part N280, Seat belt guide channel N300, Headrest N330, Clearance gap N340, Headrest operation part N800, Connecting mechanism N810, Pivot structure N811, First pivot hole N812, Second pivot hole N813, Pivot pin N814, Clearance part N820, Limiting structure N821, Limiting hole N822, Limiting groove N823 Limit pin N824, mounting side N825, mounting groove N830, elastic reset element N831, first fixing hole N832, second fixing hole N840, side wing adjustment structure N841, drive groove N841A, vertical section N841B, tilting section N842, drive pin N843, guide groove N844, horizontal groove N845, sliding column. Detailed Implementation

[0083] This disclosure will now be described in detail with reference to the accompanying drawings.

[0084] For ease of description and understanding, in this article, the direction the child faces when sitting in the child safety seat 1 is defined as "front," and the direction the child faces away from is defined as "back." Meanwhile, the direction perpendicular to the front-back direction on the horizontal plane is defined as lateral; that is, the left-right direction of the child safety seat 1 is defined as lateral.

[0085] Figure 1 illustrates a child safety seat 1 according to one embodiment of the present disclosure, which includes a seat portion 100 and a backrest portion 200. The seat portion 100 includes a seat body 120 for a child to sit on and armrest portions 130 disposed on both lateral sides of the seat body 120. The armrest portions 130 extend upward relative to the seat body 120. The backrest portion 200 is pivotally connected to the seat portion 100 such that the backrest portion 200 is pivotable relative to the seat portion 100 between a use position (e.g., the unfolded position shown in Figure 1) and a folded position (e.g., the folded position shown in Figure 5), thereby allowing the child safety seat 1 to switch between an unfolded state and a folded state. A receiving groove 140 is formed between the armrest portion 130 of the seat portion 100 and the seat body 120. This receiving groove 140 may be generally U-shaped for guiding the vehicle's seat belt through, thereby securing the child safety seat 1 and the child sitting on it together to the vehicle seat.

[0086] When the child safety seat 1 is switched to the folded position, the user usually wants the backrest 200 and the seat 100 to be close together to reduce the space occupied by the child safety seat 1. However, in some embodiments, the backrest 200 and the seat 100 may not be able to be close together due to interference from some components.

[0087] For example, in the embodiment shown in FIG1, the backrest 200 according to the present disclosure may include a headrest 242 and backrest side wings 243, which make the child safety seat 1 safer and more comfortable. However, when the backrest 200 pivots toward the folding position, the headrest 242 and backrest side wings 243 come into contact with the seat body 120 of the seat 100, preventing the child safety seat 1 from folding into a more compact state. In particular, when the seat 100 is provided with an armrest 130, the backrest side wings 243 come into contact with the armrest 130, preventing the child safety seat 1 from folding.

[0088] As shown in Figure 1, the backrest 200 may include a backrest body, a pair of backrest side wings 243 are fixedly connected to both sides of the backrest body, and the headrest 242 can be adjusted in height relative to the backrest body.

[0089] In one embodiment, a clearance groove is provided between the backrest body and the backrest side wing 243. When the backrest 200 pivots to the folded position in the direction of approaching the seat 100, the armrest 130 passes through the clearance groove, thereby avoiding interference between the armrest 130 and the backrest 200.

[0090] In order to allow the backrest 200 and the seat 100 to fit snugly together, in the embodiment shown in FIG2, the backrest 200 according to the present disclosure includes a first backrest 230 and a second backrest 240. The first backrest 230 is pivotally connected to the seat 100, and the second backrest 240 is slidably disposed on the first backrest 230 to adjust the length of the backrest 200 and pivot relative to the seat 100 together with the first backrest 230.

[0091] As shown in Figure 2, the second backrest 240 may include a second backrest body 241 and backrest side wings 243. Two backrest side wings 243 are provided and extend forward from the lateral sides (i.e., left and right sides) of the second backrest body 241, thereby providing protection for the child's torso. The second backrest 240 may also include a headrest 242. In this embodiment, the headrest 242 is fixedly connected to the upper end of the second backrest body 241 and moves as the second backrest 240 slides. In other embodiments, the headrest 242 may also be slidably connected to the second backrest body 241 via a mechanism such as a slide rail to accommodate children of different body sizes.

[0092] As shown in Figures 2 and 3, the second backrest 240 is mounted in front of the first backrest 230 and can slide upward relative to the first backrest 230. This design brings two main technical benefits. First, by adjusting the sliding position of the second backrest 240 relative to the first backrest 230, the overall length of the backrest 200 can be changed, making it suitable for children of different heights. Second, when the backrest 200 pivots relative to the seat 100 toward the folding position, the upward sliding of the second backrest 240 causes the backrest side wings 243 on both sides to move upward synchronously (see Figure 3). Thus, during the rotation of the backrest 200 relative to the seat 100 to the folding position, the backrest side wings 243 can avoid the armrest 130, allowing the backrest 200 to smoothly pivot to the folding position and fit snugly against the upper surface of the seat 100 (see Figure 4). This design not only allows the child safety seat 1 to fold more compactly, but also allows the second backrest 240 to be held in the folded position using the receiving slot 140 at the armrest 130. Additionally, referring to Figure 1, when a smaller child is seated in the child safety seat 1, the second backrest 240 does not move upwards relative to the first backrest 230. At this time, the lower end of the backrest side wing 243 faces the upper surface of the armrest 130, preventing the backrest 200 from accidentally unlocking and flipping towards the seat 100 when the vehicle decelerates, thus avoiding crushing a smaller child.

[0093] When the lateral distance (i.e., the left-right distance) between the two back-facing wings 243 is greater than the lateral width (i.e., the left-right width) of the seat 100, the back-facing wings 243 will not obstruct the back-facing portion 200 from fitting together with the seat body 120 of the seat 100. This allows the second back-facing portion 240 to slide in the direction of shortening the back-facing portion 200 and insert into the receiving groove 140, as shown in FIG5.

[0094] In other embodiments, the second backrest 240 may not have a backrest side wing. Even if the lateral width (i.e., left-right width) of the second backrest 240 is greater than the lateral distance (i.e., left-right distance) between the two armrest portions 130, a portion of the second backrest 240 can still be inserted into the receiving groove 140 by sliding the second backrest 240.

[0095] In one embodiment, as shown in FIG1, the lower portion 243B of the back-facing side wing 243 has a flat portion 244 protruding outward in the lateral direction of the second back-facing body 241, and the flat portion 244 and the second back-facing body 241 form a stepped structure. Specifically, in the embodiment shown in FIG1, the upper portion 243A of the back-facing side wing 243 and the second back-facing body 241 have an arc transition, and the rear portion of the lower portion 243B of the side wing has a flat portion 244, the rear side of which is flat. The flat portion 244 protrudes laterally from the second back-facing body 241 and has a height difference with the back of the second back-facing body 241, thereby forming a stepped structure between the flat portion 244 and the second back-facing body 241.

[0096] In another embodiment, since the planar portion 244 of the lower side wing 243B protrudes outward, the longitudinal section of the space enclosed in the lateral direction between the two back-to-back side wings 243 is approximately trapezoidal. The lateral distance between the lower side wing portions 243B is greater than the lateral width of the seat body 120, and the lateral distance between the upper side wing portions 243A is less than the lateral width of the seat body 120. Therefore, when folded, the front end of the seat body 120 is tightly engaged between the lower side wing portions 243B.

[0097] As shown in Figure 5, when the backrest 200 is in the folded position (i.e., the stowed position), after the second backrest 240 slides back to its original position relative to the first backrest 230, the backrest side wings 243 clamp the seat body 120 from both sides laterally. A portion of the connection between the backrest side wings 243 and the second backrest body 241 can be accommodated in the receiving groove 140, as shown in Figure 5. Thus, by sliding relative to the first backrest 230, a portion of the second backrest 240 can be engaged within the receiving groove 140, thereby allowing the child safety seat 1 to be folded into a more compact state.

[0098] After the child safety seat 1 is compactly folded, the backrest 200 cannot pivot toward the use position because the flat portion 244 is blocked by the armrest portion 130. For example, the flat portion 244 can abut against the lower surface of the armrest portion 130, thus keeping the backrest 200 in the folded position. The receiving groove 140 serves to restrict the pivoting of the backrest 200 toward the use position.

[0099] It should be understood that when the backrest 200 is in the folded position, the stepped structure formed by the flat part 244 and the second backrest body 241 and the armrest 130 can be in a clearance fit or a direct contact.

[0100] With the clearance fit, a small distance is allowed between the armrest 130 and the step structure, so that the second backrest 240 is located in the middle of the pair of armrests 130. The armrests 130 can prevent the backrest 200 from pivoting away from the seat body 120, thereby keeping the child safety seat 1 in a folded state.

[0101] In the case of direct contact, the armrest portion 130 directly contacts one or more surfaces of the stepped structure, thereby providing a more stable support effect, and the two can be tightly connected by appropriate fixing means. For example, the flat portion 244 can abut against the lower surface of the armrest portion 130 to prevent lateral relative sliding between the backrest portion 200 and the armrest portion 130, which could damage the components of the child safety seat 1.

[0102] As shown in Figure 1, the connection between the back side wing 243 and the second back body 241 can be an arc-shaped transition part so that the connection part can be more smoothly accommodated in the receiving groove 140.

[0103] In one embodiment, the lower portions 243B of the two backrest side wings 243 are laterally wider outward relative to the upper portions 243A of the side wings, such that when the child safety seat 1 is in the unfolded state, as shown in FIG1, the lower portions 243B of the backrest side wings 243 can abut against the armrest portion 130 of the seat portion 100, and the backrest portion 200 can be positioned relative to the seat portion 100; when the child safety seat 1 is in the folded state, as shown in FIG5, the lower portions 243B of the backrest side wings 243 are blocked by the armrest portion 130 to ensure that the backrest portion 200 cannot pivot toward the use position.

[0104] When preparing to fold up the child safety seat 1 shown in Figure 2, the user can first slide the second backrest 240 upward relative to the first backrest 230 as shown in Figure 3, then pivot the entire backrest 200 relative to the seat 100 toward the folding position as shown in Figure 4, and finally slide the second backrest 240 relative to the first backrest 230 toward the original position to the position shown in Figure 5, so that a part of the connecting part is accommodated in the receiving groove 140, thereby achieving the compact folding of the child safety seat 1.

[0105] In the embodiment shown in FIG6, the child safety seat 1 according to the present disclosure may further include a pivot locking mechanism 300, which may be disposed between the seat portion 100 and the backrest portion 200 (in embodiments where the backrest portion 200 includes a first backrest portion 230, the pivot locking mechanism 300 may be disposed between the seat portion 100 and the first backrest portion 230), and is capable of locking the backrest portion 200 relative to the seat portion 100 in one of a plurality of pivot positions (e.g., a plurality of use positions). For example, the backrest portion 200 may be locked relative to the seat portion 100 in a use position (see FIG9) or a folded position (see FIG10). As another example, the backrest portion 200 may also be locked relative to the seat portion 100 in a plurality of positions other than the use position and the folded position to adjust the angle between the backrest portion 200 and the seat portion 100.

[0106] In the embodiment shown in FIG. 6, the pivot locking mechanism 300 may include a first pivot locking groove 310, a second pivot locking groove 320, and a pivot locking member 330. The first pivot locking groove 310 is formed in the seat portion 100, and the second pivot locking groove 320 is formed in the backrest portion 200 (in embodiments where the backrest portion 200 includes a first backrest portion 230, the second pivot locking groove 320 is formed in the first backrest portion 230). The pivot locking member 330 is movable between a locked position and an unlocked position. When the pivot locking member 330 is in the locked position, as shown in FIG. 13, it engages simultaneously with the first pivot locking groove 310 and the second pivot locking groove 320, thereby locking the backrest portion 200 relative to the seat portion 100 and preventing it from pivoting. When the pivot locking member 330 is in the unlocked position, as shown in FIG. 14, it disengages from the second pivot locking groove 320, thereby unlocking the backrest portion 200 relative to the seat portion 100 and enabling it to pivot.

[0107] In another embodiment, the pivot locking member 330 may also be configured to disengage from the first pivot locking groove 310 in the unlocked position, thereby enabling the backrest 200 to pivot relative to the seat 100 after being unlocked.

[0108] To keep the backrest 200 locked relative to the seat 100, the pivot locking mechanism 300 may further include a locking elastic element 350, which is configured to tend to move the pivot locking element 330 to the locked position. In the embodiment shown in FIG6, the locking elastic element 350 is disposed between the first pivot locking groove 310 and the pivot locking element 330.

[0109] In one embodiment, as shown in FIG6, the first pivot locking groove 310 and the second pivot locking groove 320 may each be formed with a plurality of internal teeth 340, and the pivot locking member 330 may be formed with a plurality of external teeth 331 that engage with the internal teeth 340. By engaging or disengaging the internal teeth 340 and the external teeth 331, the first pivot locking groove 310 and the second pivot locking groove 320 and the pivot locking member 330 are engaged or disengaged.

[0110] The number of internal teeth 340 and external teeth 331 corresponds and can be set as needed. The more teeth there are, the smaller the included angle θ between two adjacent teeth, and the more precise the angle adjustment of the backrest 200 relative to the seat 100 can be. For example, when the number of internal teeth 340 and external teeth 331 is 20, the included angle θ between two adjacent teeth (see Figure 9) is 18 degrees, which makes the minimum angle of pivot of the backrest 200 relative to the seat 100 18 degrees.

[0111] In the embodiment shown in Figure 6, the seat portion 100 is provided with a mounting protrusion 110 that extends laterally along the seat portion 100. A pivot axis 220 around which the backrest portion 200 pivots relative to the seat portion 100 is disposed within the mounting protrusion 110. Since the mounting protrusion 110 is higher than the upper surface of the seat body 120, the pivot axis 220 is also higher than the upper surface of the seat body 120, thereby allowing the backrest portion 200 to fully conform to the seat body 120 when pivoted to the folded position, resulting in a more compact folding of the child safety seat 1.

[0112] In another embodiment, the seat 100 may not have the mounting protrusion 110. In this case, the pivot 220 may be mounted on the armrest 130, such that the pivot 220 is higher than the upper surface of the seat body 120.

[0113] When the seat portion 100 is provided with a mounting protrusion 110, the backrest portion 200 may be provided with a mounting recess 210 that mates with the mounting protrusion 110. This mounting recess 210 may be a recess located between two pivot protrusions 231 of the backrest portion 200. As shown in FIG6, in an embodiment where the backrest portion 200 includes a first backrest portion 230, both pivot protrusions 231 and the mounting recess 210 located therebetween may be formed in the first backrest portion 230.

[0114] The first pivot locking groove 310 can be formed at the lateral end face 111 of the mounting protrusion 110, as shown in FIG7. Correspondingly, the second pivot locking groove 320 can be formed at the lateral end face 211 of the mounting recess 210, as shown in FIG8.

[0115] To facilitate the user's release of the pivot locking mechanism 300, the child safety seat 1 according to this disclosure may further include a pivot release mechanism 400, which is disposed in the backrest portion 200 for releasing the pivot locking mechanism 300. For aesthetic purposes and to prevent damage, the pivot release mechanism 400 is disposed inside the backrest portion 200.

[0116] In an embodiment where the backrest portion 200 includes a first backrest portion 230, as shown in Figures 11 and 12, the pivoting release mechanism 400 may be disposed inside the first backrest portion 230.

[0117] The pivot release mechanism 400 according to this disclosure may include a pivot release operation member 410 and a linkage member 420.

[0118] The pivot release mechanism 410 can be operated to move relative to the backrest 200 to release the pivot locking mechanism 300. To facilitate external operation of the pivot release mechanism 410 by the user, the pivot release mechanism 410 may include a pivot release mechanism protrusion 412 exposed above the backrest 200 (see FIG. 11). This pivot release mechanism protrusion 412 may be, for example, a handle or a knob.

[0119] The linkage 420 is rotatably disposed on the backrest portion 200 (in embodiments where the backrest portion 200 includes a first backrest portion 230, the linkage 420 is rotatably disposed on the first backrest portion 230). The linkage 420 may be elongated and rotatably connected to the backrest portion 200 via a linkage rotation shaft 424 in its middle portion.

[0120] The first end 421 of the linkage 420 can be driven by the pivot release operation member 410, so that the movement of the pivot release operation member 410 can cause the linkage 420 to rotate, and the movement of the second end 422 of the linkage 420 can release the pivot locking mechanism 300. Therefore, as shown in Figures 11 and 12, by means of the linkage 420, the vertical movement of the pivot release operation member 410 can be transmitted to the pivot locking mechanism 300, and drive the pivot locking member 330 to move horizontally to the release position.

[0121] In the embodiments shown in Figures 11 and 12, the pivot release operation member 410 is provided with an inclined elongated groove 411, the extension direction of which is inclined to the moving direction of the pivot release operation member 410. Correspondingly, the first end 421 of the linkage member 420 is provided with a sliding pin 423 that can slide along the inclined elongated groove 411 (see Figure 16).

[0122] The process of releasing the pivot locking mechanism 300 by the pivot release operation member 410 according to the present disclosure will now be described with reference to Figures 11 and 12.

[0123] When the pivot release mechanism 400 does not release the pivot locking mechanism 300, as shown in Figure 11, the linkage 420 is tilted relative to the vertical direction, the sliding pin 423 of the first end 421 of the linkage 420 is located at the upper end of the inclined long groove 411 of the pivot release operation member 410, and the second end 422 of the linkage 420 does not apply force to the pivot locking member 330 of the pivot locking mechanism 300.

[0124] When the user unlocks the pivot locking mechanism 300 via the pivot unlocking mechanism 400, it applies an upward force to the exposed portion 412 of the pivot unlocking operating member, causing the pivot unlocking operating member 410 to move upward. As shown in Figure 12, when the pivot unlocking operating member 410 moves upward, the inclined groove 411 of the pivot unlocking operating member 410 presses against the sliding pin 423 of the first end 421 of the linkage member 420, causing the sliding pin 423 to slide along the inclined groove 411. This causes the first end 421 containing the sliding pin 423 to rotate around the linkage member's rotation axis 424, making the linkage member 420 rotate and gradually become parallel to the vertical direction. At the same time, the second end 422 of the linkage member 420 rotates toward the pivot locking member 330 of the pivot locking mechanism 300 and applies a force to the pivot locking member 330, thereby driving the pivot locking member 330 to move horizontally to the unlocking position.

[0125] For user convenience, as shown in Figures 11 and 12, the pivoting release mechanism 400 may further include a pivoting elastic member 440, one end of which is connected to the first backrest portion 230, and the other end is connected to the pivoting release operation member 410 (e.g., a pin connected to the pivoting release operation member 410), such that the pivoting elastic member 440 tends to return the pivoting release operation member 410 downward to its initial position. That is, when the user no longer applies force to the exposed portion 412 of the pivoting release operation member, the pivoting release operation member 410 will return downward to its initial position under the elastic force of the pivoting elastic member 440.

[0126] Figures 13 and 14 clearly show the start and end states of the second end 422 of the linkage 420 driving the pivot locking member 330 to move horizontally to the unlock position.

[0127] Referring to Figures 11 and 12, the movement of the second end 422 of the linkage 420 is transmitted to the pivot locking member 330 of the pivot locking mechanism 300 via a transmission member 430. The second end 422 of the linkage 420 and the transmission member 430 can be located inside the pivot protrusion 231 (see Figures 13 and 14).

[0128] To better apply force to the transmission member 430, the second end 422 of the linkage member 420 can be formed as a cylindrical structure with an increased diameter. Correspondingly, the end of the transmission member 430 that contacts the second end 422 of the linkage member 420 can be formed as a disc-shaped structure, thereby increasing the contact area between the two. Since the second end 422 of the linkage member 420 and the transmission member 430 are located inside the pivot protrusion 231, the other end of the transmission member 430 that contacts the pivot locking member 330 can be formed as an arc-shaped extension plate (see Figures 9 and 10), so that the other end of the transmission member 430 can protrude from the transverse end face 211 of the recess and contact the pivot locking member 330.

[0129] Of course, this disclosure is not limited to this. A separate transmission member 430 may not be provided between the second end 422 of the linkage member 420 and the pivot locking member 330. The second end 422 of the linkage member 420 may be formed with a pushing portion (not shown) extending toward the pivot locking member 330, so that the second end 422 of the linkage member 420 is in direct contact with the pivot locking member 330.

[0130] In the embodiments shown in Figures 15 and 16, the child safety seat 1 according to this disclosure may further include a movable locking mechanism 500, which may be disposed between the first backrest portion 230 and the second backrest portion 240, and is capable of locking the second backrest portion 240 relative to the first backrest portion 230 in one of a plurality of sliding positions. For example, the second backrest portion 240 may be locked relative to the first backrest portion 230 in a low position (i.e., the position when the second backrest portion 240 is not slid upward, see Figure 15) or a high position (i.e., the position when the second backrest portion 240 is slid upward to its highest position, see Figure 16). As another example, the second backrest portion 240 may also be locked relative to the first backrest portion 230 in a plurality of positions between the low and high positions to adjust the height of the second backrest portion 240, thereby accommodating children of different heights.

[0131] In one embodiment, the movable locking mechanism 500 may include a movable locking groove 510 (see FIG. 6) formed on the first backing portion 230 and a movable locking member 520 (see FIG. 16) formed on the second backing portion 240.

[0132] In another embodiment, a movable locking groove 510 may be formed on the second backing portion 240, and a movable locking member 520 may be formed on the first backing portion 230.

[0133] The movable locking member 520 is movable between a locked position and an unlocked position, and is configured such that when the movable locking member 520 is in the locked position, it engages with the movable locking groove 510 so that the second backing portion 240 is locked relative to the first backing portion 230 and cannot slide; when the movable locking member 520 is in the unlocked position, it disengages from the movable locking groove 510 so that the second backing portion 240 is unlocked relative to the first backing portion 230 and can slide.

[0134] In order to keep the second backing portion 240 in a locked state relative to the first backing portion 230, the movable locking mechanism 500 may further include an elastic member that is configured to tend to move the movable locking member 520 to the locked position.

[0135] To facilitate the user's release of the movable locking mechanism 500, as shown in Figures 11 and 12, the child safety seat 1 according to this disclosure may further include a movable release mechanism 600, which is disposed in the second backrest portion 240 for releasing the movable locking mechanism 500. For aesthetic purposes and to prevent damage, the movable release mechanism 600 is disposed inside the second backrest portion 240.

[0136] The movable release mechanism 600 according to this disclosure may include a movable release operation member 610, which can be operated to move the movable locking member 520 to the release position. To facilitate external operation of the movable release operation member 610 by a user, the movable release operation member 610 may include a movable release operation member protrusion 611 exposed in the second backrest portion 240 (see FIG. 11). This movable release operation member protrusion 611 may be, for example, a handle or a knob.

[0137] For ease of operation, the exposed portion 611 of the movable release mechanism is configured not to be obstructed by the first backrest portion 230. For example, in the embodiment shown in Figures 11 and 12, the exposed portion 611 of the movable release mechanism is located on the headrest 242, so that when the second backrest portion 240 is in the low position, the exposed portion 611 of the movable release mechanism is not obstructed by the first backrest portion 230. In another embodiment, the exposed portion 611 of the movable release mechanism may be located on the backrest side wing 243 and driven by a traction member such as a steel wire. Therefore, the exposed portion 412 of the pivoting release mechanism and the exposed portion 611 of the movable release mechanism are arranged separately, allowing the user to conveniently operate one of them.

[0138] When the user releases the moving locking mechanism 500 by moving the release mechanism 600, it applies an upward force to the exposed part 611 of the release operation member, causing the release operation member 610 to move upward. Thus, the release operation member 610 drives the moving locking member 520 to the release position.

[0139] For user convenience, as shown in Figures 11 and 12, the movable release mechanism 600 may further include a movable elastic member 620, one end of which is connected to the second backrest portion 240, and the other end is connected to the movable release operating member 610, such that the movable elastic member 620 tends to return the movable release operating member 610 downward to its initial position. That is, when the user no longer applies force to the exposed portion 611 of the movable release operating member, the movable release operating member 610 will return downward to its initial position under the elastic force of the movable elastic member 620.

[0140] By setting a pivot locking mechanism 300 and a pivot unlocking mechanism 400 to control the pivoting movement of the first backrest 230, and a sliding locking mechanism 500 and a sliding unlocking mechanism 600 to control the sliding movement of the second backrest 240, these mechanisms can perform dedicated functions, thereby simplifying their structure and making them easy to operate.

[0141] Referring to Figures 17 to 30, another embodiment of this disclosure provides a child safety seat.

[0142] Figure 17 illustrates a foldable child safety seat M1 according to the present disclosure, comprising a seat M100 and a backrest M200, the backrest M200 being pivotally connected to the seat M100 such that the backrest M200 can pivot relative to the seat M100, thereby allowing the child safety seat M1 to switch between an unfolded state and a folded state. The unfolded state of the child safety seat M1 refers to the backrest M200 pivoting relative to the seat M100 to an unfolded position suitable for a child to sit in, for example, the backrest M200 being approximately 90 degrees relative to the seat M100, as shown in Figures 17 and 18. The folded state of the child safety seat M1 refers to the backrest M200 pivoting towards the seat M100 to a folded position approximately flush against the upper surface (also called the seat surface) M120 of the seat M100, as shown in Figures 19 and 20. In this position, the child safety seat M1 is folded to reduce the space occupied by the child safety seat M1.

[0143] The seat M100 includes a seat body M101 and a movable component M600, which is movably connected to the seat body M101. The upper surface of the seat body M101 and the upper surface of the movable component M600 together form a seat surface for supporting a child. The movable component M600 can move relative to the seat body M101 between a working position and a non-working position to change the seating dimensions of the upper surface M120 of the seat M100. In this embodiment, the movable component M600 is a pair of seat side wings mounted on the left and right sides of the seat body M101. In other embodiments, the movable component M600 may also be a slidable housing mounted on the front end of the seat body M101, which can extend the seating area of ​​the seat M100 forward and upward; this is not particularly limited.

[0144] In the embodiment shown in Figure 17, the backrest M200 according to this disclosure may include backrest side wings M210 and headrest M220, which make it safer and more comfortable for children riding in a child safety seat. Two backrest side wings M210 may be provided and extend from the lateral sides (i.e., left and right sides) of the backrest M200. The headrest M220 may be located at the upper end of the backrest M200.

[0145] To facilitate pivoting of the backrest M200 relative to the seat M100, the lower part of the backrest M200 may be provided with a backrest pivot portion M230. In the embodiment shown in FIG. 17, the backrest pivot portion M230 may be two protrusions provided on the lower part of the backrest M200. Correspondingly, the seat M100 may be provided with two receiving recesses M170 for receiving the backrest pivot portion M230. The pivot axis (not shown) around which the backrest M200 pivots relative to the seat M100 may pass laterally through the backrest pivot portion M230 and the receiving recesses M170 on the seat M100.

[0146] In the embodiment shown in Figure 17, the seat portion M100 may be provided with a mounting protrusion M110 extending laterally along the seat portion M100. A receiving recess M170 and a pivot axis are provided on the mounting protrusion M110. Since the mounting protrusion M110 is higher than the upper surface M120 of the seat portion M100, the pivot axis is also higher than the upper surface M120 of the seat portion M100, so that when the backrest portion M200 is pivoted to the folded position, it can completely fit against the upper surface M120 of the seat portion M100, making the folding of the child safety seat M1 more compact.

[0147] When the backrest M200 is pivoted relative to the seat M100 to a suitable position, such as the unfolded position, the user typically desires that the backrest M200 remain in that position. Therefore, the child safety seat M1 according to this disclosure may include a pivot locking mechanism M300. The pivot locking mechanism M300 is disposed between the seat M100 and the backrest M200 and is capable of locking the pivoted position of the backrest M200 relative to the seat M100. For example, the pivot locking mechanism M300 can lock the backrest M200 in the unfolded position shown in FIG. 17 or the folded position shown in FIG. 20, or it can lock it in other pivot positions to adjust the angle between the backrest M200 and the seat M100.

[0148] The pivot locking mechanism M300 includes a pivot locking member M310. The pivot locking member M310 is movable between a pivot locking position and a pivot unlocking position, such that when the pivot locking member M310 is in the pivot locking position, it can prevent the backrest M200 from pivoting relative to the seat M100, and when the pivot locking member M310 is in the pivot unlocking position, it allows the backrest M200 to pivot relative to the seat M100.

[0149] In the embodiments shown in Figures 21 and 22, the pivot locking member M310 is a pivot locking pin provided on the seat portion M100. The pivot locking pin M310 may be in the shape of a flat strip. When the seat portion M100 is provided with a mounting protrusion M110, the pivot locking pin M310 may be provided on the mounting protrusion M110.

[0150] Correspondingly, the pivot locking mechanism M300 also includes a pivot locking groove M320 provided on the backrest portion M200, which can engage with the pivot locking pin M310. When the backrest portion M200 is provided with a backrest pivot portion M230, the pivot locking groove M320 can be provided on the circumferential outer surface of the backrest pivot portion M230 so as to engage with the pivot locking pin M310.

[0151] As shown in Figure 21, when the backrest M200 pivots relative to the seat M100 to the unfolded position, the pivot locking pin M310 and the pivot locking groove M320 are aligned. The pivot locking pin M310 can move to the pivot locking position and engage with the pivot locking groove M320, so that the backrest M200 cannot pivot relative to the seat M100, thereby locking the backrest M200 in the unfolded position.

[0152] As shown in Figure 22, when the pivot locking pin M310 moves to the pivot release position, it disengages from the pivot locking groove M320, allowing the backrest M200 to release relative to the seat M100 and pivot.

[0153] Furthermore, multiple pivot locking grooves M320 can be provided, so that when the backrest M200 pivots relative to the seat M100 to different pivot positions, the pivot locking pin M310 can engage with different pivot locking grooves M320 to lock the backrest M200 relative to the seat M100 at different pivot positions. For example, when the backrest M200 pivots relative to the seat M100 to the folded position, the pivot locking pin M310 engages with the pivot locking groove M320 corresponding to the folded position, thereby locking the backrest M200 relative to the seat M100 at the folded position.

[0154] As shown in Figures 21 and 22, multiple pivot locking grooves M320 can be arranged along the circumferential outer surface of the back-mounted pivot part M230, such that each pivot locking groove M320 corresponds to a different pivot angle of the back-mounted part M200.

[0155] Of course, this disclosure is not limited to this. The positions of the pivot locking pin M310 and the pivot locking groove M320 can be interchanged. That is, the pivot locking pin M310 can be provided on the backrest part M200, and the pivot locking groove M320 can be provided on the seat part M100.

[0156] Additionally, the pivot locking mechanism M300 may include other mating structures besides the pivot locking pin M310 and the pivot locking groove M320. For example, the pivot locking mechanism M300 may employ a mating structure of a locking pin and a locking hole, or a mating structure of a locking hook and a locking ring.

[0157] To facilitate the user in releasing the pivot locking mechanism M300, as shown in Figures 21 and 22, the child safety seat M1 according to this disclosure may also include a release mechanism M400, which is disposed on the seat M100 for releasing the pivot locking mechanism M300.

[0158] For aesthetic reasons and to prevent damage, the release mechanism M400 can be located inside the base M100. Alternatively, the release mechanism M400 can be concealed by a housing.

[0159] According to one embodiment of the present disclosure, the release mechanism M400 includes a release operation member M410 that can be operated to move, which is linked with the pivot locking member M310 such that the release operation member M410 can drive the pivot locking member M310 to move between a pivot locking position and a pivot release position.

[0160] To facilitate external operation of the release mechanism M410 by the user, the release mechanism M410 may include a release mechanism protrusion M412 exposed in the seat body M101 (see Figures 21 and 22). The release mechanism protrusion M412 may be, for example, a handle or a knob.

[0161] It should be understood that, depending on the actual situation, the release mechanism M400 can also be installed on the backrest M200, and the pivot locking mechanism M300 can be released by the traction component.

[0162] In the embodiments shown in Figures 21 and 22, the release operation member M410 and the pivot locking member M310 can be directly connected or formed as one unit, so that the release operation member M410 can directly drive the pivot locking member M310 to move together. When the pivot locking pin M310 is in the shape of a flat strip, the release operation member M410 can also be in the shape of a flat plate.

[0163] In other embodiments, the release operation member M410 may be connected to the pivot locking member M310 via an intermediate transmission member, so that the movement of the release operation member M410 is transmitted to the pivot locking member M310 via the intermediate transmission member.

[0164] As mentioned earlier, in order to achieve a more compact folding mechanism for the child safety seat M1, users typically desire that the backrest M200 can pivot to fully conform to the upper surface M120 of the seat M100. However, when the backrest M200 pivots towards the seat M100, the backrest side wings M210 are obstructed by the lateral sides of the seat M100, preventing the backrest M200 from pivoting to fully conform to the upper surface M120 of the seat. On the other hand, reducing the lateral width of the seat M100 would decrease the riding comfort of the child safety seat M1.

[0165] Therefore, as shown in Figure 23, the seat M100 includes a seat body M101 and seat side wings M600. The seat body M101 can be a hollow shell structure made of rigid plastic, with a backrest M200 pivotally connected to the seat body M101. For example, in the embodiment shown in Figure 23, the seat body M101 may include a seat upper cover M140 and a seat lower cover M150 fixedly connected to each other. The seat side wings M600 are slidably connected between the seat upper cover M140 and the seat lower cover M150. The seat body M101 has openings formed by the seat upper cover M140 and the seat lower cover M150 on two sides in the left-right direction, so that the seat side wings M600 can be accommodated inside. The seat side wings M600 are movably provided on the side edges of the seat body M101. According to this disclosure, the seat wing M600 serves as a lateral extension of the seat body M101, and it is not necessarily wing-shaped, but may be block-shaped or other suitable shapes.

[0166] The seat side wing M600 can move relative to the seat body M101 between a working position extending out of the seat body M101 and a non-working position retracted into the seat body M101. As shown in Figure 24, when the seat side wing M600 is in the working position, the lateral width of the seat body M101 increases to accommodate a child. As shown in Figure 25, when the seat side wing M600 is moved to the non-working position by a force acting towards the interior of the seat body M101, the lateral width of the seat body M101 decreases to prevent the backrest side wing M210 from being blocked by the lateral sides of the seat body M101, allowing the backrest M200 to pivot to a more compact position.

[0167] In Figures 24 and 25, the seat side wing M600 is slidably connected to the seat body M101, such that when the seat side wing M600 is in the working position, it slidably extends out of the seat body M101 (as shown in Figure 24), and when the seat side wing M600 is in the non-working position, it is at least partially and slidably retracted into the interior of the seat body M101 (as shown in Figure 25).

[0168] As shown in Figures 24 and 25, the seat side wing M600 may further include a side wing return elastic member M630, one end of which is connected to the seat body M101, and the other end is connected to the seat side wing M600. The side wing return elastic member M630 tends to return the seat side wing M600 to its working position and extend it out of the seat body M101. That is, when the backrest M200 pivots relative to the seat body M101 toward the unfolded position, after the backrest side wing M210 disengages from the side wing tilting part M610, the seat side wing M600 will return to its working position under the elastic force of the side wing return elastic member M630.

[0169] It should be understood that Figures 24 and 25 are only schematic representations of the side wing reset elastic member M630 connected to the right seat side wing M600, but the left seat side wing M600 can also be connected to the other side wing reset elastic member M630.

[0170] The side wing reset elastic element M630 can be made of elastic elements such as springs, pneumatic rods or hydraulic rods.

[0171] Referring to Figure 26, a groove M620 is provided on the bottom surface of the seat side wing M600, and a slider M130 is provided on the seat body M101 (e.g., the seat lower cover M150) (see Figure 27). The groove M620 can slide along the slider M130, so that the seat side wing M600 slides relative to the seat body M101. Referring to Figures 24 and 25, the groove M620 is an arc with a preset curvature. When the seat side wing M600 slides from the working position to the non-working position along the groove M620, the seat side wing M600 moves along the arc trajectory. The pivoting amplitude of the front end of the seat side wing M600 toward the seat body M101 is greater than the pivoting amplitude of the rear end of the seat side wing M600. This can prevent the seat side wing M600 from getting stuck when sliding toward the interior of the seat body M101 due to uneven force during the pressing of the backrest M200.

[0172] Multiple grooves M620 can be provided for the seat side wing M600. In the embodiment shown in Figures 24 and 25, the groove M620 includes a front groove M622 near the front edge of the seat body M101 and a rear groove M621 near the rear edge of the seat body M101. At least one of the front groove M622 and the rear groove M621 is an arc-shaped groove.

[0173] Correspondingly, multiple sliders M130 can be provided on the main body M101 of the seat. For example, as shown in Figure 27, slider M130 includes a front slider M132 and a rear slider M131.

[0174] The front slider M132 is slidably engaged with the front slide groove M622, and the rear slider M131 is slidably engaged with the rear slide groove M621, thereby stably guiding the sliding of the seat side wing M600.

[0175] Referring to Figure 26, both the front slide rail M622 and the rear slide rail M621 are arc-shaped slide rails, with the curvature of the front slide rail M622 being greater than that of the rear slide rail M621. During the sliding process of the seat side wing M600 from the working position to the non-working position, the seat side wing M600 also moves forward towards the front of the seat body M101. Referring to Figure 25, when the seat side wing M600 moves to the non-working position, the front end of the seat side wing M600 moves forward to abut against the inner front end face of the seat body M101. This reduces the gap between the seat side wing M600 and the front end face of the seat body M101, and also prevents interference between the rear end of the seat side wing M600 and the inner rear end face of the seat body M101 during its arc-shaped trajectory movement. In other embodiments, one of the front slide rail M622 and the rear slide rail M621 can be set as an arc-shaped slide rail, and the other as a straight slide rail.

[0176] In other embodiments, the sliding connection between the seat side wing M600 and the seat body M101 can be replaced by a hinge, telescopic bracket, or other means.

[0177] To facilitate the user, a side wing inclined portion M610 is provided at the lateral edge of the seat side wing M600 on the side away from the seat body M101. The side wing inclined portion M610 may be an inclined surface formed on the shell surface of the seat side wing M600 and inclined inward toward the seat body M101. The side wing tilting portion M610 extends from the upper surface of the seat side wing M600 along a direction inclined to the horizontal plane to the side surface of the seat side wing M600. The tilting direction of the side wing tilting portion M610 corresponds to the bending direction of the slide groove M620 (for example, the inclined surface of the side wing tilting portion M610 tilts towards the concave surface of the slide groove M620 in the front-rear direction). This allows the back side wing M210 of the backrest portion M200 to press against the side wing tilting portion M610 substantially along the extension direction of the slide groove during the pivoting process of the backrest portion M200 toward the seat body M101, so as to smoothly push the seat side wing M600 into the interior of the seat portion M200 and move it to the non-working position. In this way, the user does not need to push the seat side wing M600 into the interior of the seat portion M200 by hand, avoiding jamming during sliding.

[0178] When the seat side wing M600 is in the working position extending out of the seat body M101, in order to prevent the seat side wing M600 from being retracted into the seat body M101 by external force, the child safety seat M1 according to this disclosure may also include a movable component locking mechanism M500, which is disposed in the seat body M101 and can lock the seat side wing M600 in the working position.

[0179] In one embodiment, the movable component locking mechanism M500 includes a side wing locking member M510, which is movable between a side wing locked position and a side wing unlocked position. When the side wing locking member M510 is in the side wing locked position, as shown in FIG29, it prevents the seat side wing M600 from moving relative to the seat body M101. When the side wing locking member M510 is in the side wing unlocked position, as shown in FIG30, it allows the seat side wing M600 to move relative to the seat body M101.

[0180] To ensure that the side wing locking member M510 locks the seat side wing M600 in the working position, the movable component locking mechanism M500 may also include a reset elastic member (not shown), which is configured to tend to move the side wing locking member M510 to the side wing locking position.

[0181] In the embodiments shown in Figures 29 and 30, the side wing locking member M510 is a side wing locking pin.

[0182] The movable component locking mechanism M500 according to this disclosure further includes a slide lock hole M520 (see FIG. 26) provided in the slide groove M620 and a slider lock hole (not shown) provided in the slider M130. When the seat side wing M600 is in the working position, the slide lock hole M520 and the slider lock hole are aligned, and the side wing locking pin M510 can be inserted into the slide lock hole M520 and the slider lock hole to lock the seat side wing M600 in the working position.

[0183] When the slide rail M620 includes two slide rails (i.e., the front slide rail M622 and the rear slide rail M621) and the slider M130 includes two sliders (i.e., the front slider M132 and the rear slider M131), the side wing locking pin M510 also correspondingly includes a front side wing locking pin M512 and a rear side wing locking pin M511 (see Figures 29 and 30). By inserting the front side wing locking pin M512 into the slide rail locking hole M520 of the front slide rail M622 and the slider locking hole of the front slider M132, and by inserting the rear side wing locking pin M511 into the slide rail locking hole M520 of the rear slide rail M621 and the slider locking hole of the rear slider M131, as shown in Figure 30, the seat side wing M600 can be more stably locked in the working position.

[0184] To facilitate user operation, the release mechanism M400 according to this disclosure can also release the movable component locking mechanism M500. That is, the release mechanism M400 can not only release the aforementioned pivot locking mechanism M300, but also the movable component locking mechanism M500. As a result, after the release mechanism M400 is operated, not only can the backrest M200 pivot relative to the seat body M101 toward the folded position, but the seat side wing M600 can also move from the working position to the non-working position.

[0185] It should be understood that after the release mechanism M400 of this disclosure is operated, the pivot locking mechanism M300 and the movable component locking mechanism M500 can be released simultaneously, or the pivot locking mechanism M300 can be released first and then the movable component locking mechanism M500 can be released, thereby avoiding accidental locking that would cause the seating area of ​​the seat M100 to suddenly shrink, resulting in discomfort for the child.

[0186] In one embodiment, the release operation member M410 of the release mechanism M400 is linked with the pivot locking member M310 and the side locking member M510, so that the release operation member M410 drives the pivot locking member M310 to move to the pivot release position, and at the same time drives the side locking member M510 to move to the side release position.

[0187] In the embodiments shown in Figures 29 and 30, the release mechanism M400 further includes a release drive M420, through which the release operation member M410 drives the side wing locking pin M510 to the side wing release position via the release drive M420.

[0188] In this embodiment, since the side wing locking pin M510 includes a front side wing locking pin M512 and a rear side wing locking pin M511, the release drive member M420 may include a release drive rod M421 for driving the rear side wing locking pin M511 and a release traction line M422 for driving the front side wing locking pin M512, as shown in Figures 29 and 30.

[0189] Of course, in other embodiments, the release drive M420 may include only one of the release drive rod M421 and the release traction line M422, or may include other types of drive components, as long as they can drive the side wing locking pin M510 to the side wing release position.

[0190] As shown in Figure 29, the release drive rod M421 is rotatably connected to the seat body M101, and is configured such that when the first end M421A of the release drive rod M421 is driven by the release operation member M410, for example, when it is pushed downward, the release drive rod M421 rotates, causing the second end M421B of the release drive rod M421 to drive the rear wing locking pin M511 to move upward.

[0191] The release traction line M422 includes a first end M422A (see Figure 21) and a second end M422B (see Figure 29).

[0192] The first end M422A of the release traction line M422 is connected to the release operation member M410 (see Figure 21), and the second end M422B of the release traction line M422 is connected to the front wing locking pin M512 (see Figure 29), so that the release operation member M410 drives the front wing locking pin M512 via the release traction line M422.

[0193] The process of releasing the pivot locking mechanism M300 and the movable component locking mechanism M500 according to the present disclosure by the release mechanism M400 is described below with reference to Figures 21, 22, 29 and 30.

[0194] When the pivot locking mechanism M300 and the movable component locking mechanism M500 are in the locked state, since the release mechanism M400 does not drive the pivot locking pin M310 (i.e., the pivot locking member M310), the pivot locking pin M310 is in the pivot locking position and engages with the pivot locking groove M320 to lock the backrest M200 in the unfolded position, as shown in Figure 21. At the same time, since the release mechanism M400 does not drive the release drive member M420 (i.e., the release drive rod M421 and the release traction line M422), the side wing locking pins M510 (i.e., the front side wing locking pin M512 and the rear side wing locking pin M511) are inserted into the slide lock hole M520 and the slider locking hole to lock the seat side wing M600 in the working position, as shown in Figure 29.

[0195] When a user releases the pivot locking mechanism M300 and the movable component locking mechanism M500 through the release mechanism M400, for example, when the user applies a downward force to the exposed portion M412 of the pivot release operation member, the release operation member M410 moves downward.

[0196] After the release operation member M410 moves downward, the pivot locking pin M310 (i.e., the pivot locking member) linked with it also moves downward to the pivot release position, thereby disengaging from the pivot locking groove M320, so that the backrest part M200 can be released relative to the seat body M101 and pivot, as shown in Figure 22.

[0197] Simultaneously, the downward-moving release actuator M410 also pushes the first end M421A of the release drive rod M421 downward, causing the second end M421B of the release drive rod M421 to drive the rear wing locking pin M511 upward, thereby causing the rear wing locking pin M511 to disengage from the slide lock hole M520 and the slider locking hole (see Figure 30). Furthermore, the downward-moving release actuator M410 also drives the first end M422A of the release traction line M422 downward (see Figure 22), causing the second end M422B of the release traction line M422 to move upward, thereby driving the front wing locking pin M512 upward until it disengages from the slide lock hole M520 and the slider locking hole (see Figure 30). This allows the seat side wing M600 to be released and moved to a non-working position, that is, the seat side wing M600 can retract into the seat body M101.

[0198] Therefore, the unlocking mechanism M400 according to this disclosure can unlock the pivot locking mechanism M300 and the moving component locking mechanism M500.

[0199] For user convenience, as shown in Figures 29 and 30, the release mechanism M400 may further include an operating member reset elastic element M413, one end of which is connected to the seat body M101, and the other end is connected to the release operating member M410, such that the operating member reset elastic element M413 tends to return the release operating member M410 to its initial position. That is, when the user no longer applies force to the exposed part M412 of the release operating member, the release operating member M410 will return to its initial position under the elastic force of the operating member reset elastic element M413.

[0200] Of course, this disclosure is not limited to this.

[0201] Referring to Figures 17 and 31, one embodiment of this disclosure provides yet another child safety seat. This embodiment is substantially the same as the previous embodiment. The main difference is:

[0202] According to this disclosure, the locking mechanism M400 can release the locking mechanism M500 of the movable component by pivoting the backrest part M200. Because the backrest part M200 in the unfolded position is separated from the seat part M100 by a certain distance, the backrest part M200 will only contact the seat part M100 after it pivots a certain angle toward the retracted position. Therefore, during the process of pivoting the backrest part M200 toward the retracted position, it can drive the locking drive member M420 to release the locking mechanism M500 of the movable component.

[0203] For example, the first end M422A of the release traction line M422 is not connected to the release operating member M410, but to the backrest part M200. Therefore, when the release mechanism M400 releases the pivot locking mechanism M300, the backrest part M200 pivots relative to the seat part M100, and drives the first end M422A of the release traction line M422 to move. This causes the backrest part M200 to drive the front wing locking pin M512 to move to the disengagement slot locking hole M520 and the slider locking hole via the release traction line M422, thereby releasing the movable component locking mechanism M500. This also allows both the pivot locking mechanism M300 and the movable component locking mechanism M500 to be released after the release mechanism M400 is operated.

[0204] Optionally, in this embodiment, the release mechanism M410 can be omitted. Multiple plastic ribs are provided at the pivot point of the backrest M200. These ribs are interference-fitted with the pivot groove of the seat body M101, and the friction between the ribs and the pivot groove keeps the backrest M200 in the unfolded state. When folding the child safety seat M1, the user can directly pivot the backrest M200 in the folded position. Therefore, the release mechanism M410 is unnecessary, making the folding of the child safety seat M1 more convenient.

[0205] Furthermore, in the child safety seat M1 according to this disclosure, the movement of the seat side wing M600 between the working position and the non-working position can include a variety of situations.

[0206] For example, the extension and retraction movement of the seat side wing M600 extending out of or retracting into the seat body M101 can be pivotal sliding, rather than parallel sliding. Specifically, one of the front or rear ends of the seat side wing M600 is pivotally connected to the seat body M101, while the other is slidably connected to the seat body M101 along a preset trajectory via a groove and a slider, thereby enabling the seat side wing M600 to pivot between the working position and the non-working position.

[0207] For example, the seat side wing M600 is configured to be detachable from the seat body M101. Specifically, the seat side wing M600 is detachably connected to the side edge of the seat body M101, so that when the seat side wing M600 is connected to the side edge of the seat body M101, the seat side wing M600 is in a working position for a child to sit in, and the side wing locking member M510 can lock the seat side wing M600 in this working position; when the side wing locking member M510 is released, the seat side wing M600 can be detached from the seat body M101 and is in a non-working position, as shown in FIG32, so that the backrest M200 can pivot to a degree that fully conforms to the upper surface of the seat body M101.

[0208] For example, the seat side wing M600 can be flipped up and down relative to the side edge of the seat body M101. Specifically, the side edge of the seat side wing M600 is connected to the side edge of the seat body M101, which can be flipped up and down. So when the seat side wing M600 is flipped up so that its upper surface is flush with the upper surface of the seat body M101, the seat side wing M600 is in the working position for the child to sit in, and the movable component locking mechanism can lock the seat side wing M600 in this working position. When the user presses the release button M640 to unlock the movable component locking mechanism, the seat side wing M600 is released and can be flipped to the non-working position on the upper surface of the seat body M101, as shown in Figure 33, so that the child safety seat M1 can be folded more compactly.

[0209] In yet another embodiment of this disclosure, unlike the aforementioned embodiments, "forward" refers to the direction the vehicle's front is pointing when the child safety seat is installed in the vehicle seat. "Rearward" refers to the direction opposite to "forward." "Left-right direction" refers to a direction orthogonal to the front-back direction; "left-right direction" is also called "lateral direction." "Outer side" refers to the side away from the child when the child is seated in the child safety seat, and "inner side" refers to the side closer to the child when the child is seated in the child safety seat.

[0210] As shown in Figure 34, the child safety seat N1 includes a backrest N100 and a seat N200. The backrest N100 supports the child's back, and the seat N200 supports the child's buttocks. The backrest N100 is pivotally connected to the seat N200 and pivots relative to the seat N200 between a use position and a storage position. The use position refers to the position where the backrest N100 is pivoted relative to the seat N200 to a position suitable for a child to sit in; for example, as shown in Figure 34, the angle between the backrest N100 and the seat N200 is approximately 90 degrees. As shown in Figure 38, the storage position refers to the position where the backrest N100 pivots towards the seat N200 until the two are flush, reducing the space occupied by the child safety seat N1 when stored.

[0211] The child safety seat N1 also includes a headrest N300 disposed on the backrest N100. In this embodiment, the headrest N300 moves vertically relative to the backrest N100 via a slide rail structure extending along the height direction of the backrest N100 (e.g., vertical slide grooves provided on the inner sides of both sides of the backrest N100, and sliders provided at corresponding positions on the headrest N300). As shown in Figures 35 and 36, a headrest operating member N340 is provided at the rear of the headrest N300. By applying force to the headrest operating member N340, the caregiver can drive the slide rail structure to unlock and adjust the height of the headrest N300 to accommodate children of different heights. In other embodiments, the headrest N300 may also be fixedly installed on the upper part of the backrest N100.

[0212] As shown in Figure 34, the seat N200 includes a seat body N210 and armrests N270 extending upward from both sides of the seat body N210. The armrests N270 are provided with a seat belt guide channel N280 for passing through the vehicle seat belt (not shown) so as to use the vehicle seat belt to restrain the child and the child safety seat N1 together to the vehicle seat.

[0213] As shown in Figure 34, the backrest N100 includes a backrest body N110 and two side wings N120 located on both sides of the backrest body N110. The backrest body N110 is the main support structure of the backrest N100, and its contour is adapted to the physiological curve of a child's back, providing longitudinal support for the child's back. The backrest body N110 can be made of a rigid plastic frame combined with soft foam, and covered with a breathable fabric. The two side wings N120 are symmetrically distributed on the left and right sides of the backrest body N110, extending along the height of the backrest body N110, and their coverage extends from the child's shoulders down to the waist area, forming a lateral protective barrier. The inner wall of the side wings N120 is designed as an arc that slopes inward from top to bottom, which can effectively limit the lateral displacement of the child's upper body and reduce the risk of impact injury in the event of a side collision or sharp turn. It should be noted that the connection method between the side wing N120 and the backrest body N110 can be designed according to functional requirements. For example, it can be fixedly connected by an integral molding process, or it can be movably connected by the connecting mechanism N800 described later. No particular limitation is made here. When the backrest N100 is pivoted relative to the seat N200 to the use position, the upper surfaces of the backrest body N110 and the seat body N210 form an inclination angle of 90 to 110 degrees, ensuring that the child can sit comfortably and safely. When the backrest N100 is pivoted relative to the seat N200 to the storage position, as shown in Figure 38, the backrest body N110 rotates towards the upper surface of the seat body N210.

[0214] As shown in Figure 35, the side wing N120 includes a movable side wing N121. The movable side wing N121 is movably connected to both sides of the backrest body N110 via a connecting mechanism N800 (see Figure 37) and can move laterally between an expanded position and a retracted position relative to the backrest body N110. The connecting mechanism N800 is configured such that, during the pivoting of the backrest body N100 relative to the seat N200 to the retracted position, the movable side wing N121 is pushed by the seat N200 and can move to the expanded position. The retracted position refers to the position where the movable side wing N121 and the backrest body N110 are tightly pressed together laterally, as shown in Figure 35, preventing the movable side wing N121 from continuing to move towards the backrest body N110. The expanded position refers to the position where the movable side wings N121 move laterally away from the backrest body N110 to a certain distance, as shown in Figure 36. This allows the lateral distance between the movable side wings N121 on both sides to increase, and the seat body N210 to enter between the two movable side wings N121. This allows the backrest body N110 to approach the upper surface of the seat body N210, and the backrest part N100 and the seat part N200 to be more compact, thereby reducing the overall thickness of the child safety seat N1 after folding and saving storage space.

[0215] Hereinafter, a first embodiment of the connection mechanism N800 according to the present disclosure will be described with reference to FIGS. 35 to 40.

[0216] As shown in Figures 35 and 36, the connecting mechanism N800 includes a pivot structure N810. The upper part of the movable wing N121 is pivotally connected to the upper part of the back body N110 via the pivot structure N810, allowing the movable wing N121 to pivot relative to the back body N110 between a retracted position and an expanded position. The pivot structure N810 includes multiple interlocking pivot members, which are respectively disposed on the back body N110 and the movable wing N121, so that the movable wing N121 pivots relative to the back body N110 about the pivot axis NX.

[0217] In one embodiment, as shown in FIG37, the plurality of pivot members may include a first pivot hole N811 located on the upper part of the back body N110, a second pivot hole N812 located on the upper part of the movable wing N121, and a pivot pin N813. The first pivot hole N811 and the second pivot hole N812 are for the pivot pin N813 to pass through, so that the movable wing N121 is pivotally connected to the back body N110.

[0218] Of course, the pivot structure N810 according to this disclosure is not limited to this, and other structural forms can be adopted to realize the pivot connection of the movable wing N121 to the back body N110. For example, the plurality of pivot members may also include a pivot hole located in one of the back body N110 and the movable wing N121, and a pivot pin located in the other.

[0219] As shown in Figure 37, the first pivot hole N811 is located on the upper part of the backrest N100, near the child's shoulder. The upper part of the movable side wing N121 is configured to pivot between the expanded and folded positions about the pivot axis NX passing through the first pivot hole N811. As shown in Figures 39 and 40, the lower end of the movable side wing N121 forms a drive unit N121A. When the backrest N100 is in the use position, the drive unit N121A corresponds to the position between the child's shoulder and hip; when the backrest N100 is in the folded position, the drive unit N121A corresponds to the outer side of the seat body N210.

[0220] During the pivoting of the backrest N100 relative to the seat N200 to the stowed position, the inner surfaces of the drive portions N121A of the two movable side wings N121 located on both sides of the backrest body N110 will abut against the seat body N210 of the seat N200, causing the drive portions N121A of the movable side wings N121 to be pushed by the seat body N210 of the seat N200. Since the movable side wings N121 can pivot relative to the backrest body N110, the force exerted by the seat body N210 on the drive portions N121A of the movable side wings N121 will cause the movable side wings N121 to pivot toward the open position, thereby increasing the lateral distance between the two movable side wings N121, allowing the backrest body N110 to get closer to the upper surface of the seat body N210. Therefore, when the backrest N100 pivots to the stowed position relative to the seat N200, the movable wing N121 can move toward the expanded position without the caregiver having to apply force to it separately, so that the backrest body N110 and the seat body N210 fit more closely together.

[0221] As shown in Figure 34, the side wing N120 may also include a fixed side wing N122 independent of the movable side wing N121. The fixed side wing N122 is located below the movable side wing N121 and roughly corresponds to the child's hip. The fixed side wing N122 is fixedly connected to the backrest body N110. When the movable side wing N121 moves relative to the backrest body N110 between the open and closed positions, the fixed side wing N122 will not move with the movable side wing N121. Since the fixed side wing N122 is located below the movable side wing N121 and close to the seat N200, the child's buttocks are limited by the fixed side wing N122 when moving, thereby preventing the child's body from contacting the movable side wing N121. This prevents the child's buttocks from accidentally causing the movable side wing N121 to rotate in the open position, thus eliminating the need for a locking structure between the movable side wing N121 and the backrest body N100, and simplifying operation. Optionally, a groove is formed on the top of the fixed side wing N122, and the lower surface of the drive part N121A abuts against the groove of the fixed side wing N122, thereby further preventing the movable side wing N121 from rotating due to accidental contact with the drive part N121A by a child.

[0222] It should be understood that the side wing N120 according to this disclosure may include only the movable side wing N121 and not the fixed side wing N122, that is, the entire side wing N120 can move between an expanded position and a retracted position relative to the back body N110.

[0223] Furthermore, since the movable wing N121 is in lateral contact with the back body N110 when it is in the retracted position, the upper end of the side of the movable wing N121 may abut against the upper end of the side of the back body N110 when the movable wing N121 pivots relative to the back body N110 toward the expanded position, thus hindering the pivoting of the movable wing N121 toward the expanded position. To avoid this problem, as shown in FIG37, a clearance portion N814 is provided at the upper end of the back body N110 near the first pivot hole N811 (or, pivot axis NX), which is configured to prevent the movable wing N121 from abutting against the back body N110 when pivoting toward the expanded position.

[0224] In one embodiment, as shown in FIG37, the clearance portion N814 may be an inclined surface located at the upper end of the back of the body N110 near the first pivot hole N811 (or, the pivot axis NX), the inclined surface being inclined in a direction away from the movable wing N121. It should be understood that the clearance portion N814 may also be provided at the upper end of the movable wing N121 near the second pivot hole N812 (or, the pivot axis NX).

[0225] In another embodiment, the clearance portion N814 may also be a notch (not shown) located at the upper end of the back of the body N110 near the first pivot hole N811 (or pivot axis NX), which can clearance the upper end of the side of the movable wing N121.

[0226] As shown in Figure 37, a clearance N330 can be provided between the headrest N300 and the movable wing N121. This clearance N330 is configured so that the movable wing N121 will not collide with the headrest N300 when it pivots toward the expanded position, thereby avoiding obstruction of the headrest N300 when the movable wing N121 pivots toward the expanded position.

[0227] To prevent the movable wing N121 from pivoting too much relative to the back body N110 toward the expanded position, the connecting mechanism N800 may include a limiting structure N820, which is configured to limit the travel of the movable wing N121 relative to the back body N110 in the lateral direction.

[0228] As shown in Figure 37, the limiting structure N820 may include a limiting hole N821 located on the back body N110, a limiting groove N822 located on the movable side wing N121, and a limiting pin N823 passing through the limiting hole N821 and the limiting groove N822. The limiting pin N823 is movable along the limiting groove N822. The stroke of the limiting pin N823 along the limiting groove N822 defines the range of pivoting of the movable side wing N121 relative to the back body N110 between the expanded position and the retracted position.

[0229] It should be understood that, as needed, the limiting hole N821 can be located on the movable side wing N121, and the limiting groove N822 can be located on the back of the main body N110.

[0230] Alternatively, the limiting structure N820 can adopt other structures, as long as the structure can limit the range of pivoting of the movable wing N121 relative to the back body N110 between the expanded position and the retracted position.

[0231] To guide the lateral pivoting of the movable wing N121 relative to the back body N110, as shown in Figures 37 and 40, the back body N110 is provided with a mounting groove N825, and the movable wing N121 is provided with a mounting side N824 that can engage with the mounting groove N825. By engaging the mounting side N824 with the mounting groove N825, the lateral movement of the movable wing N121 relative to the back body N110 can be made smoother.

[0232] It should be understood that, as needed, the mounting slot N825 can be located on the movable side wing N121, and the mounting side N824 can be located on the back of the main body N110.

[0233] As shown in Figure 37, the connecting mechanism N800 may include a resilient reset member N830, which is configured to tend to move the movable side wings N121 to the folded position. By providing the resilient reset member N830, not only can the movable side wings N121 tend to be held in the folded position, but also after the backrest N100 pivots relative to the seat N200 to the folded position, the two movable side wings N121 clamp the seat body N210 of the seat N200 in the middle, and the lateral movement of the backrest N100 relative to the seat N200 is restricted, which improves the stability of the child safety seat N1 in the folded state.

[0234] As shown in Figure 37, the elastic reset member N830 can be a tension spring, with its two ends fixed to the first fixing hole N831 on the back body N110 and the second fixing hole N832 on the movable side wing N121, respectively.

[0235] It should be understood that the elastic reset element N830 can also be a torsion spring, which can be configured to surround the pivot pin N813, with both ends fixed to the back body N110 and the movable side wing N121 respectively, so as to drive the movable side wing N121 to move to the retracted position.

[0236] Next, a second embodiment of the connection mechanism N800 according to the present disclosure will be described with reference to Figures 41 to 43.

[0237] As shown in Figure 41, the connecting mechanism N800 includes a side wing adjustment structure N840. The movable side wing N121 is movably connected to the back body N110 via the side wing adjustment structure N840, so that the movable side wing N121 can move laterally relative to the back body N110 between an open position and a closed position.

[0238] As shown in Figure 41, the side wing adjustment structure N840 may include a drive groove N841, a drive pin N842, and a guide groove N843. The drive groove N841 is disposed on the movable side wing N121 and has a vertically extending vertical section N841A and an inclined section N841B. The vertical section N841A is located below the inclined section N841B. The tilt angle and tilt range of the inclined section N841B can be set according to the range of the lateral distance between the two movable side wings N121 to be adjusted. The drive pin N842 is disposed on the head rest N300, passes through the drive groove N841, and is slidable along the drive groove N841. The guide groove N843 is configured to extend laterally on the movable side wing N121 and communicates with the vertical section N841A of the drive groove N841. The drive pin N842 can slide in the guide groove N843, thereby allowing the active wing N121 to move laterally relative to the back body N110.

[0239] When the headrest N300 is raised relative to the backrest body N110, causing the drive pin N842 to slide upward along the inclined section N841B, the force exerted by the drive pin N842 on the inclined section N841B can drive the movable side wing N121 to move toward the expanded position (see Figure 42). When the headrest N300 is in a low position relative to the backrest body N110, causing the drive pin N842 to align with the guide groove N843 (see Figure 41), the guide groove N843 allows the movable side wing N121 to be pushed by the seat N200 and move toward the expanded position (see Figure 43).

[0240] Specifically, as shown in Figure 42, when the headrest N300 rises upward relative to the backrest N100, it simultaneously drives the drive pin N842 to slide upward. The drive pin N842 slides upward from the vertical section N841A to the inclined section N841B along the drive groove N841 of the movable side wing N121. When the drive pin N842 slides upward along the inclined section N841B, it applies a force to the inclined section N841B, which drives the movable side wing N121 to move towards an expanded position. As the headrest N300 rises, the lateral distance between the two movable side wings N121 also increases, creating a more suitable accommodation space for older children or those who are taller or heavier.

[0241] Conversely, as shown in Figure 41, when the headrest N300 lowers relative to the backrest N100 from a high position to a low position, it simultaneously drives the drive pin N842 to slide down. As the drive pin N842 slides downwards along the inclined section N841B of the drive groove N841 of the movable side wing N121, it exerts a force on the inclined section N841B, which drives the movable side wing N121 towards the folded position. As the headrest N300 lowers, the lateral distance between the two movable side wings N121 also decreases, creating a more suitable space for younger children or those who are shorter and thinner. Once the drive pin N842 slides down from the inclined section N841B to the vertical section N841A, it no longer exerts a force on the vertical section N841A, and the lateral distance between the two movable side wings N121 no longer decreases.

[0242] As shown in Figure 43, when the headrest N300 is in a low position relative to the backrest N100, since the movable side wing N121 is provided with a guide groove N843 that extends laterally and communicates with the drive groove N841, the drive pin N842 can enter the guide groove N843 from the drive groove N841 and slide along the guide groove N843, thereby allowing the movable side wing N121 to move toward the expanded position.

[0243] With the headrest N300 in a low position relative to the backrest body N110, when the backrest part N100 pivots to the stowed position relative to the seat part N200, the inner surfaces of the two movable side wings N121 located on both sides of the backrest body N110 will abut against the seat body N210 of the seat part N200, causing the movable side wings N121 to be pushed by the seat body N210 of the seat part N200. Since the guide groove N843 allows the movable side wings N121 to move relative to the backrest body N110, the force exerted by the seat body N210 on the movable side wings N121 will cause the movable side wings N121 to move towards the expanded position, thereby increasing the lateral distance between the two movable side wings N121, so that the backrest body N110 can get closer to the upper surface of the seat body N210. Therefore, when the backrest N100 pivots to the stowed position relative to the seat N200, the movable wing N121 can move toward the expanded position without the caregiver having to apply force to it separately, so that the backrest body N110 and the seat body N210 fit more closely together.

[0244] To ensure smoother movement of the movable side wing N121 relative to the backing body N110, as shown in Figures 41 to 43, the backing body N110 of the backing portion N100 is provided with a sliding post N845, and correspondingly, the movable side wing N121 is provided with a transverse groove N844. Alternatively, the backing body N110 may have a transverse groove N844, and the movable side wing N121 may have a corresponding sliding post N845. The sliding post N845 can slide along the transverse groove N844. In the embodiments shown in Figures 41 and 42, the backing body N110 has two sliding posts N845 on its upper and lower parts, and the movable side wing N121 has two transverse grooves N844 on its upper and lower parts respectively. Thus, during the lateral movement of the movable wing N121 relative to the back body N110, the sliding column N845 slides along the transverse groove N844, making the movement of the movable wing N121 more stable.

[0245] In another embodiment, the side wing adjustment structure N840 may not include the drive groove N841, drive pin N842, and guide groove N843, but instead includes a sliding column N845 disposed on the backrest body N110 and a transverse groove N844 disposed on the movable side wing N121. With the cooperation of the sliding column N845 and the transverse groove N844, the movable side wing N121 can also be moved laterally relative to the backrest body N110 between an expanded position and a retracted position, and this movement is independent of the raising and lowering of the headrest N300.

[0246] The second embodiment of the connecting mechanism N800 according to this disclosure may also include the aforementioned limiting structure N820, elastic reset member N830, mounting groove N825 and mounting side N824, which will not be described in detail here.

[0247] Since the features of this disclosure can be embodied in various forms without departing from the nature of this disclosure, it should also be understood that the above embodiments are not limited to any of the details described above, and unless otherwise stated, should be broadly interpreted as falling within the scope defined by the appended claims. Therefore, all modifications and alterations falling within the scope and limits of the claims or equivalents thereof should be covered by the appended claims.

Claims

1. A foldable child safety seat, comprising: The seat includes a seat body and armrests located on both sides of the seat body, and a receiving groove is formed between the seat body and the armrests; as well as The backrest includes a first backrest and a second backrest. The first backrest is pivotally connected to the seat and can rotate between a used position and a folded position. The second backrest is slidably connected to the first backrest to adjust the length of the backrest. When the backrest is in the folded position, the second backrest can engage a portion of the second backrest within the receiving groove by sliding relative to the first backrest.

2. The child safety seat as described in claim 1, wherein, The second backrest includes a second backrest body and a backrest side wing. The lower part of the backrest side wing has a flat portion protruding from the outside of the second backrest body. The flat portion and the second backrest body form a stepped structure. When the backrest is in the folded position, the backrest side wings clamp the seat body from both sides laterally, and the flat part is limited by the armrest, thereby keeping the backrest in the folded position.

3. The safety seat of claim 1 or 2, wherein, The child safety seat also includes: A pivot locking mechanism is provided between the first backrest and the seat, and is capable of locking the backrest relative to the seat in one of the plurality of said use positions; A pivot release mechanism is provided on the first back support portion and can be operated to release the pivot locking mechanism. A movable locking mechanism is disposed between the first backrest and the second backrest, and is capable of locking the second backrest relative to the first backrest in one of a plurality of sliding positions; and A movable release mechanism is provided on the second back support and is capable of releasing the movable locking mechanism.

4. The safety seat of claim 3, wherein, The child safety seat also includes a linkage member rotatably mounted on the first backrest portion. A first end of the linkage member is driven by the pivot release mechanism, such that movement of the pivot release mechanism causes rotation of the linkage member. Movement of the second end of the linkage member releases the pivot locking mechanism. The pivoting release mechanism and the linkage mechanism each have an inclined elongated groove on their first ends, the groove extending in a direction inclined to the moving direction of the pivoting release mechanism. The other end of the linkage mechanism has a sliding pin that can slide along the inclined elongated groove. The movement of the second end of the linkage is transmitted to the pivot locking mechanism through a transmission component.

5. The safety seat of claim 4, wherein, The pivot locking mechanism includes: A first pivot locking groove is formed in the seat portion; A second pivot locking groove is formed in the first backing portion; and A pivoting locking member is movable between a locked position and an unlocked position. The pivoting locking member is configured to engage simultaneously with both a first pivoting locking groove and a second pivoting locking groove in the locked position, and to disengage from either the first pivoting locking groove or the second pivoting locking groove in the unlocked position. The second end of the linkage can drive the pivot locking member to move to the unlocking position.

6. The safety seat of claim 5, wherein, The first pivot locking groove and the second pivot locking groove are respectively formed with internal teeth, and the pivot locking member is formed with external teeth that engage with the internal teeth.

7. The safety seat of claim 5, wherein, The seat portion is provided with a mounting protrusion, the first backing portion is provided with a mounting recess that mates with the mounting protrusion, the first pivot locking groove is formed at the lateral end face of the protrusion of the mounting protrusion, and the second pivot locking groove is formed at the lateral end face of the recess of the mounting recess.

8. The child safety seat as claimed in claim 7, wherein, A pivot axis for the first backrest to pivot about is provided within the mounting protrusion, such that the pivot axis is higher than the upper surface of the seat body.

9. The child safety seat as claimed in claim 1 or 2, wherein, The child safety seat also includes: A movable locking mechanism is disposed between the first backrest and the second backrest, and is capable of locking the second backrest relative to the first backrest in one of a plurality of sliding positions. A movable release mechanism is provided on the second back support and is capable of releasing the movable locking mechanism. The movable locking mechanism includes: A movable locking groove is formed in one of the first back part and the second back part; A movable locking member, formed in the other of the first backrest portion and the second backrest portion, is movable between a locked position and an unlocked position. The movable locking member is configured to engage with the movable locking groove in the locked position and disengage from the movable locking groove in the unlocked position. The movable release mechanism includes a movable release operating member, which can be operated to drive the movable locking member to the release position. The movable release mechanism includes a movable release mechanism exposed portion, which is exposed to the second backrest portion and is configured not to be obstructed by the first backrest portion.

10. The child safety seat as claimed in claim 1, wherein, The second backrest includes a second backrest body and a pair of backrest side wings, each of the backrest side wings including an upper part and a lower part, the lower part of the side wing protruding outward relative to the upper part of the side wing. When the backrest is in the folded position, the lower part of the side wings clamps the seat body from both sides laterally, and the lower part of the side wings is blocked by the armrest, thereby keeping the backrest in the folded position.

11. A foldable child safety seat, comprising: Seat; A backrest is pivotally connected to the seat, and the backrest is pivotable between an unfolded position and a folded position. and A pivoting locking mechanism is disposed between the seat and the backrest, the pivoting locking mechanism being capable of locking the backrest in the unfolded position. The seat includes a seat body and a movable component, the movable component being movably connected to the seat body; the movable component is movable relative to the seat body between a working position and a non-working position to change the seating dimensions of the seat. The child safety seat also includes: A locking mechanism for the movable component is disposed between the seat body and the movable component, and is capable of locking the movable component in the working position; and The release mechanism includes a release actuating element, which is linked to the pivot locking mechanism and the movable component locking mechanism and can be operated to drive the pivot locking mechanism and the movable component locking mechanism to release.

12. The child safety seat as claimed in claim 11, wherein, The movable component includes a seat side wing that is slidably connected to the seat body. When the seat side wing is in the working position, it extends out of the seat body. When the seat side wing is in the non-working position, it retracts at least partially into the seat body.

13. The child safety seat as claimed in claim 12, wherein, One of the seat side wing and the seat body is provided with an arc-shaped groove with a preset curvature, and the other is provided with a slider. The slider is slidably engaged with the arc-shaped groove so that the seat side wing can slide relative to the seat body along an arc-shaped trajectory between the working position and the non-working position.

14. The child safety seat as claimed in claim 13, wherein, The slide groove includes a front slide groove disposed on the front side of the seat side wing and a rear slide groove disposed on the rear side of the seat side wing. The curvature of the front slide groove is greater than that of the rear slide groove, so that the seat side wing moves forward toward the seat body during the process of sliding from the working position to the non-working position.

15. The child safety seat as claimed in claim 13, wherein, The outer side of the seat wing is provided with a side wing tilting part. The tilting direction of the side wing tilting part corresponds to the bending direction of the arc-shaped slide groove. As a result, during the pivoting process of the backrest towards the seat body, the backrest side wing of the backrest pushes the side wing tilting part, causing the seat wing to move along the arc-shaped trajectory into the interior of the seat body.

16. The child safety seat as claimed in claim 13, wherein, The locking mechanism of the movable component includes a side wing locking member, and the side wing locking member includes a side wing locking pin. The locking mechanism of the movable component further includes a groove locking hole disposed in the arc-shaped groove and a slider locking hole disposed in the slider, such that when the seat side wing is in the working position, the groove locking hole and the slider locking hole are aligned, and the side wing locking pin can be inserted into the groove locking hole and the slider locking hole to lock the seat side wing in the working position.

17. The child safety seat as claimed in claim 16, wherein, The unlocking mechanism includes a pivot locking pin and an unlocking drive member, and the unlocking operation member is connected to the pivot locking pin and the unlocking drive member respectively; the backrest portion is provided with the pivot locking groove, and the pivot locking pin and the pivot locking groove can engage with each other to lock the backrest portion relative to the seat portion in the unfolded position. During the movement of the release mechanism, the release mechanism drives the pivot locking pin out of the pivot locking groove and drives the release drive to unlock the side locking pin.

18. The child safety seat as claimed in any one of claims 12 to 17, wherein, The child safety seat also includes a side wing reset elastic member, one end of which is connected to the seat body and the other end of which is connected to the seat side wing. The side wing reset elastic member is configured to provide a force to the seat side wing to move in the direction of the working position.

19. The child safety seat as claimed in claim 11, wherein, The movable component includes a seat side wing, wherein the lateral width of the seat when the seat side wing is in the working position is greater than the lateral width of the seat when the seat side wing is in the non-working position, wherein... The side wings of the seat can extend outside the main body of the seat or at least partially retract into the interior of the main body of the seat; or The side wings of the seat can rotate between the side and top surface of the seat body; or The seat side wings can be detachably mounted on the seat body.

20. A foldable child safety seat, comprising: Seat; and A backrest is pivotally connected to the seat, and the backrest is pivotable between an unfolded position and a folded position; The seat includes a seat body and a movable component, the movable component being movably connected to the seat body; the movable component is movable relative to the seat body between a working position and a non-working position to change the seating dimensions of the seat. The child safety seat also includes: A locking mechanism for the movable component is disposed between the seat body and the movable component, and is capable of locking the movable component in the working position; and The release traction line has a first end connected to the backrest and a second end connected to the locking mechanism of the movable component, such that when the backrest pivots relative to the seat from the unfolded position to the retracted position, the backrest pulls the release traction line to cause the locking mechanism of the movable component to release.

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