CN110758534B - Two-way foldable seat structure and infant carrier thereof - Google Patents

Abstract

The invention provides a seat bidirectional foldable structure which is suitable for infant carriers and comprises a front foot joint, a rear foot joint and a seat support joint, wherein the front foot joint and the rear foot joint are rotatably connected along a rotation axis, the seat support joint can rotate relative to the front foot joint and the rear foot joint, and the seat support joint protrudes and stretches to two sides to form a first support arm and a second support arm respectively; a first supporting part is arranged on one side of the front foot joint, which faces the front foot rest, and a second supporting part is arranged on one side of the rear foot joint, which faces the rear foot rest; when the infant carrier is in a folded state, the seat support joint can rotate forwards relative to the front foot joint and the rear foot joint to realize forward folding or rotate backwards to realize backward folding; when the infant carrier is in an open state, the first support arm is abutted to the first support part, and the second support arm is abutted to the second support part, so that the seat support joint is positioned. The invention also provides an infant carrier with the seat bidirectional foldable structure.

Description

Two-way foldable seat structure and infant carrier thereof

Technical Field

The present invention relates to an infant product, in particular to an infant carrier and a two-way foldable seat structure thereof.

Background technique

Infant carriers currently on the market, such as infant strollers, usually have a detachable load-bearing portion and a frame, and the load-bearing portion can be installed on the frame in both directions. When the load-bearing portion is installed forward, the infant in the load-bearing portion can see the scenery in front; when the load-bearing portion is installed backward, the infant in the load-bearing portion can see the caregiver of the stroller, and the caregiver can also easily check the situation of the infant.

Most of the current infant carriers have a foldable function, but the bidirectionally installed carrying portion can usually only be folded when installed forward, and bidirectional folding cannot be achieved.

Therefore, it is necessary to improve the folding structure of the current infant carrier to realize the two-way folding of the seat of the infant carrier, and at the same time make the folded infant carrier standable, with a small volume after folding, and easy to carry and store.

Summary of the invention

The object of the present invention is to provide a seat bidirectional foldable structure to achieve bidirectional folding of an infant carrier.

Another object of the present invention is to provide an infant carrier with a seat that can be folded in two directions, and the folded infant carrier can stand up, and has a small volume after being folded, so that it is easy to carry and store.

In order to achieve the above-mentioned objectives, the present invention provides a two-way foldable seat structure, which is suitable for an infant carrier, wherein the infant carrier comprises a front foot joint arranged at the upper end of a front foot frame, a rear foot joint arranged at the upper end of a rear foot frame, and a seat support joint for supporting a load-bearing portion, wherein the front foot joint and the rear foot joint are rotatably connected along a rotation axis, the seat support joint can rotate relative to the front foot joint and the rear foot joint, and the seat support joint protrudes to both sides to form a first support arm and a second support arm respectively; a first support portion is arranged on one side of the front foot joint facing the front foot frame in a direction parallel to the rotation axis, and a rear foot joint faces the rear foot frame in a direction parallel to the rotation axis. A second support portion is provided on one side along a direction parallel to the rotation axis; when the front foot joint and the rear foot joint are rotated to the point where the infant carrier is in a folded state, the first support portion and the second support portion are close to each other, and the seat support joint can be rotated forward relative to the front foot joint and the rear foot joint to achieve forward folding, or rotated backward to achieve backward folding; when the front foot joint and the rear foot joint are rotated to the point where the infant carrier is in an opened state, the first support portion and the second support portion are separated from each other, the first support arm abuts against the first support portion, and the second support arm abuts against the second support portion, so as to position the seat support joint.

Compared with the prior art, the bidirectional foldable seat structure provided by the present invention is characterized in that the seat support joint can rotate relative to the front foot joint and the rear foot joint, and a first support portion is provided on the side of the front foot joint close to the front leg frame, and a second support portion is provided on the side of the rear foot joint close to the rear leg frame, and the seat support joint protrudes toward both sides to form a first support arm and a second support arm respectively, so that when the infant carrier is in a folded state, the first support portion and the second support portion are close to each other, the seat support joint can rotate relative to the front foot joint and the rear foot joint, and forward folding is achieved when the seat support joint rotates forward relative to the front foot joint and the rear foot joint, and backward folding is achieved when the seat support joint rotates backward relative to the front foot joint and the rear foot joint. According to the bidirectional foldable seat structure provided by the present invention, there is no restriction on the position of the load-bearing portion when the infant carrier is folded, and the load-bearing portion can be conveniently folded regardless of whether it is in the forward or backward direction.

Preferably, the front foot joint is provided with a first slide groove, and the rear foot joint is provided with a second slide groove, and the first slide groove and the second slide groove have an overlapping area in a plane perpendicular to the rotation axis; the seat support joint is fixedly connected with a connecting pin on one side facing the front foot joint and the rear foot joint, and the connecting pin is inserted into the first slide groove and the second slide groove to achieve a rotatable connection between the seat support joint and the front foot joint and the rear foot joint. In this preferred embodiment, the overlapping area of the first slide groove and the second slide groove changes with the rotation of the front foot joint and the rear foot joint, and the connecting pin inserted into the first slide groove and the second slide groove, while achieving the connection between the seat support joint and the front foot joint and the rear foot joint, also locks or releases the relative rotation of the front foot joint and the rear foot joint.

In one embodiment, the first slide groove and the second slide groove are both in an arc shape with the rotation axis as the center; when the front foot joint and the rear foot joint are rotated to the infant carrier in an open state, the overlapping area of the first slide groove and the second slide groove is reduced, and the connecting pin is limited by the first slide groove and the second slide groove; when the front foot joint and the rear foot joint are rotated to the infant carrier in a folded state, the overlapping area of the first slide groove and the second slide groove is increased, and the connecting pin can slide within the overlapping area; in this embodiment, when the infant carrier is in the folded state, as the connecting pin slides in the first slide groove and the second slide groove, the position of the seat support joint is changed to facilitate folding.

Furthermore, the cross-section of the connecting pin is non-circular, and the width of a partial area of the connecting pin cross-section is greater than the width of the first slide groove or the second slide groove; according to this structure, the connecting pin cannot rotate relative to the first slide groove and the second slide groove, and can only slide in the overlapping area when the front foot joint and the rear foot joint are rotated to the infant carrier in a folded state and the overlapping area of the first slide groove and the second slide groove is increased, thereby allowing the seat support joint to rotate forward and backward to achieve folding, and when the front foot joint and the rear foot joint are rotated to the infant carrier in an open state, the overlapping area of the first slide groove and the second slide groove is reduced, and the connecting pin is limited by the first slide groove and the second slide groove, and the connecting pin can play an auxiliary limiting role for the seat support joint.

In another embodiment, the first slide groove and the second slide groove are straight; the diameter of the cross section of the connecting pin is smaller than the width of the first slide groove and the second slide groove; the connecting pin can rotate in the first slide groove and the second slide groove, and will not limit the seat support joint even when the infant carrier is in an open state.

Preferably, the first support portion and the second support portion are respectively provided with shaft sleeves at positions where they are clamped with the first support arm and the second support arm.

To achieve the above-mentioned purpose, the present invention also provides an infant carrier, comprising a front leg frame, a rear leg frame and a load-bearing part, wherein a front leg joint is arranged at the upper end of the front leg frame, a rear leg joint is arranged at the upper end of the rear leg frame, and the front leg joint and the rear leg joint are rotatably connected along a rotation axis; the load-bearing part is forwardly installed or rearwardly installed via a seat support joint; the infant carrier also comprises a two-way foldable seat structure as described in any of the above items, and the two-way foldable seat structure is symmetrically arranged on the left and right sides of the infant carrier.

Compared with the prior art, the infant carrier provided by the present invention has the aforementioned two-way foldable seat structure, so that the carrying part can be folded in two directions, front and back, which is convenient for users to use.

Preferably, the infant carrier also includes an armrest frame, an upper joint is provided at the lower end of the armrest frame, the front foot joint, the rear foot joint and the upper joint are rotatably connected along a rotation axis, one of the front foot joint, the rear foot joint and the upper joint is provided with a bayonet, and the other two of the front foot joint, the rear foot joint and the upper joint are respectively provided with a slot; when the front foot joint, the rear foot joint and the upper joint are rotated until the infant carrier is in an open state, the bayonet moves into the slot to keep the infant carrier in the open state.

Specifically, the bearing portion includes a seat portion and a backrest portion, the backrest portion and the seat portion are rotatably connected, the seat portion is provided with at least two backrest angle adjustment slots along an arc direction centered on the rotation axis of the backrest portion and the seat portion, and the backrest portion is provided with an adjustment pin that moves in the direction of the rotation axis of the backrest portion and the seat portion; the adjustment pin can be selectively inserted into any of the backrest angle adjustment slots to adjust the inclination angle of the backrest portion, or withdrawn from the backrest angle adjustment slot so that the backrest portion can be rotated relative to the seat portion to fold the bearing portion.

Furthermore, the adjustment pin always has a tendency to be inserted into the backrest angle adjustment slot; the bearing portion also includes a backrest adjustment handle, which is arranged on a side of the backrest portion away from the seat portion, and the backrest adjustment handle is connected to the adjustment pin via a rigid traction rope; operating the backrest adjustment handle drives the adjustment pin to exit the backrest angle adjustment slot, so that the backrest portion and the seat portion can be relatively rotated to achieve folding.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of an infant carrier according to the present invention.

FIG. 2 is a schematic diagram of the separate structure of the frame and the load-bearing part of the infant carrier of the present invention.

FIG. 3 is an exploded view of the bidirectional foldable seat structure of the present invention.

FIG. 4 a is a schematic diagram of the open state of the front foot joint and the rear foot joint.

FIG. 4 b is a schematic diagram of the front foot joint and the rear foot joint in the folded state.

FIG. 5 is a schematic diagram showing the state of the seat support joint when the bidirectional foldable seat structure of the present invention is folded forward.

FIG. 6 is a schematic diagram showing the state of the seat support joint when the bidirectional foldable seat structure of the present invention is folded backward.

FIG. 7 a is a schematic diagram of the open state of the front foot joint and the rear foot joint in another embodiment.

FIG. 7 b is a schematic diagram of another embodiment in which the front foot joint and the rear foot joint are in a folded state and the seat support joint is folded forward.

FIG. 7 c is a schematic diagram of another embodiment in which the front foot joint and the rear foot joint are in a folded state and the seat support joint is folded backward.

FIG. 8 is a schematic structural diagram of the bearing portion.

FIG. 9 is an enlarged view of portion A in FIG. 8 .

10 to 12 are schematic diagrams showing the folding process of the infant carrier of the present invention when the seat portion is installed forward.

13 to 15 are schematic diagrams showing the folding process of the seat portion of the infant carrier of the present invention when it is installed rearward.

Detailed ways

In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

As shown in FIG1 , the present invention provides an infant carrier, which includes a front leg frame 100, a rear leg frame 200 and a bearing portion 300. A front leg joint 110 is provided at the upper end of the front leg frame 100, and a rear leg joint 210 is provided at the upper end of the rear leg frame 200. The front leg joint 110 and the rear leg joint 210 are rotatably connected along a rotation axis; the bearing portion 300 is forward-mounted or rear-mounted via a seat support joint 310. The infant carrier also includes a two-way foldable seat structure, which is symmetrically arranged on the left and right sides of the infant carrier, so that the infant carrier can be conveniently folded regardless of whether the bearing portion 300 is in a forward-mounted or rear-mounted state. The infant carrier and the two-way foldable seat structure provided by the present invention are described in more detail below in conjunction with FIGS. 2 to 15 .

The infant carrier provided by the present invention can be a children's high chair, an infant stroller, etc. The infant carrier shown in FIG1 is, for example, an infant stroller. Specifically, as shown in FIG1 , the infant carrier includes a frame and a carrying portion 300 for carrying an infant. The frame includes a front leg frame 100, a rear leg frame 200, and an armrest frame 400, and the upper ends of the front leg frame 100 and the rear leg frame 200 are respectively provided with a front leg joint 110 and a rear leg joint 210, and the lower end of the armrest frame 400 is provided with an upper joint 410. The upper ends of the front leg frame 100 and the rear leg frame 200 are rotatably connected via the front foot joint 110 and the rear foot joint 210, and the lower ends of the front leg frame 100 and the rear leg frame 200 are separated, so that the front leg frame 100 and the rear leg frame 200 are arranged in a herringbone shape; the lower end of the armrest frame 400 is rotatably connected to the front foot joint 110 and the rear foot joint 210 via the upper joint 410.

Further, in combination with Figures 1 to 3, the front foot joint 110, the rear foot joint 210 and the upper joint 410 are rotatably connected along a rotation axis, and one of the front foot joint 110, the rear foot joint 210 and the upper joint 410 is provided with a latch 411, and the other two of the front foot joint 110, the rear foot joint 210 and the upper joint 410 are respectively provided with latch grooves 111 and 211; when the front foot joint 110, the rear foot joint 210 and the upper joint 410 are rotated to the infant carrier in an open state, the latch pin 411 moves into the latch grooves 111 and 211 to keep the infant carrier in an open state; when the latch pin 411 exits the latch grooves 111 and 211, the front foot joint 110, the rear foot joint 210 and the upper joint 410 can freely rotate close to each other to put the infant carrier in a folded state. Specifically, in this embodiment, the bayonet 411 is disposed at the upper joint 410, and the front foot joint 110 and the rear foot joint 210 are provided with bayonet grooves 111 and 211, respectively; in other embodiments different from this embodiment, the bayonet 411 can also be disposed at the front foot joint 110 or the rear foot joint 210, as long as the front foot joint 110, the rear foot joint 210 and the upper joint 410 can be limited to be in an open state, or the front foot joint 110, the rear foot joint 210 and the upper joint 410 can be released so that the frame can be folded. Furthermore, in this embodiment, the bayonet 411 can move along the radial direction of the rotation axis to enter or exit the bayonet grooves 111 and 211, and in other embodiments different from this embodiment, the bayonet 411 can also move along a direction parallel to the rotation circumferential direction to enter or exit the bayonet grooves 111 and 211.

Preferably, in order to allow the infant carrier to be folded in order, a one-way limiting structure may be provided between the front leg joint 110 and the upper joint 410, so that the front leg frame 100 and the handrail frame 400 can only rotate in one direction. At this time, the handrail frame 400 can only rotate in a direction away from the rear leg frame 200 and toward the front leg frame 100, or the handrail frame 400 can only rotate in a direction close to the rear leg frame 200. Specifically in this embodiment, in conjunction with FIGS. 10-15 , when the latch 411 exits the latch slots 111 and 211 and the front leg joint 110, the rear leg joint 210 and the upper joint 410 are released, the handrail frame 400 can only rotate forward, away from the rear leg frame 200 and toward the front leg frame 100, to achieve the folding of the infant carrier. Preferably, as shown in FIGS. 10 to 15 , based on the relative lengths of the armrest 400 and the rear leg 200, after the infant carrier is folded, the armrest 400 and the rear leg 200 are roughly in the same plane, and can jointly support the folded infant carrier in an upright state, which is convenient for storing the infant carrier. It can be understood that, based on the above disclosure of the present invention, a one-way limiting structure is provided between the front leg joint 110 and the upper joint 410, which is common knowledge for those skilled in the art and will not be described here.

As shown in FIG. 1 and FIG. 2 , in the frame of the infant carrier, the front leg frame 100, the rear leg frame 200 and the armrest frame 400 are all symmetrical structures, and the seat support joints 310 are connected to the relative inner sides of the two sets of front leg frames 100, the rear leg frames 200 and the armrest frames 400; the left and right sides of the load-bearing part 300 are respectively provided with clamping parts 320, and the clamping parts 320 and the seat support joints 310 are correspondingly clamped to realize the detachable connection between the load-bearing part 300 and the frame. Furthermore, the clamping parts 320 and the seat support joints 310 can be clamped forward or backward to realize the forward installation or backward installation of the load-bearing part 300 relative to the frame.

In order to enable the load-bearing portion 300 to be folded together with the frame when the infant carrier is used in the front and rear directions, the present invention also provides a two-way foldable seat structure. The two-way foldable seat structure provided by the present invention is suitable for infant carriers such as children's high chairs and infant strollers. As shown in Figures 1 to 5, it can be understood that the infant carrier includes a front foot joint 110 arranged at the upper end of the front leg frame 100, a rear foot joint 210 arranged at the upper end of the rear leg frame 200, and a seat support joint 310 for supporting the load-bearing portion, the front foot joint 110 and the rear foot joint 210 are rotatably connected along a rotation axis, the seat support joint 310 can rotate relative to the front foot joint 110 and the rear foot joint 210, and the seat support joint 310 protrudes to both sides to form a first support portion 311 and a second support arm 312 respectively; the front foot joint 110 is provided with a first support portion 113 along a direction parallel to the rotation axis on one side of the front leg frame 100, and the rear foot joint 210 is provided with a first support portion 113 on one side of the rear leg frame 200 A second support portion 213 is provided in a direction parallel to the rotation axis; when the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in a folded state, the first support portion 113 and the second support portion 213 are close to each other, and the seat support joint 310 can rotate forward relative to the front foot joint 110 and the rear foot joint 210 to achieve forward folding, or rotate backward to achieve backward folding; when the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in an open state, the first support portion 113 and the second support portion 213 are separated, the first support portion 311 abuts against the first support portion 113, and the second support arm 312 abuts against the second support portion 213, so as to position the seat support joint 310. In combination with FIGS. 6-7, more specifically:

Preferably, as shown in Fig. 3 to Fig. 6, the front foot joint 110 and the rear foot joint 210 are rotatably connected along a rotation axis; wherein the front foot joint 110 is provided with a first slide groove 112, and the rear foot joint 210 is provided with a second slide groove 212. The first slide groove 112 and the second slide groove 212 have an overlapping area in a plane perpendicular to the rotation axis; the seat support joint 310 is fixedly connected with a connecting pin 313 on one side facing the front foot joint 110 and the rear foot joint 210, and the connecting pin 313 is inserted into the first slide groove 112 and the second slide groove 212, so that the seat support joint 310 is connected with the front foot joint 110 and the rear foot joint 210. In this preferred embodiment, the overlapping area of the first slide groove 112 and the second slide groove 212 changes with the rotation of the front foot joint 110 and the rear foot joint 210. The connecting pin 313 inserted into the first slide groove 112 and the second slide groove 212 not only realizes the rotatable connection between the seat support joint 310 and the front foot joint 110 and the rear foot joint 210, but also locks or releases the relative rotation of the front foot joint 110 and the rear foot joint 210.

In an embodiment shown in FIG. 4a and FIG. 4b , the first slide groove 112 and the second slide groove 213 are both in an arc shape with the rotation axis as the center; when the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in the open state, the overlapping area of the first slide groove 112 and the second slide groove 213 is reduced, and the connecting pin 313 is limited by the first slide groove 112 and the second slide groove 213, and at the same time, the connecting pin 313 limits the front foot joint 110 and the rear foot joint 210 to be locked and limit the further opening of the two, so that the infant carrier maintains the preset open state; when the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in the folded state, the overlapping area of the first slide groove 112 and the second slide groove 213 is increased, and the connecting pin 313 can slide in the overlapping area; in this embodiment, when the infant carrier is in the folded state, as the connecting pin 313 slides in the first slide groove 112 and the second slide groove 213, the position of the seat support joint 310 is changed to facilitate folding.

Furthermore, as shown in Figures 4a to 6, the cross-section of the connecting pin 313 is non-circular, and the width of a partial area of the cross-section of the connecting pin 313 is greater than the width of the first slide groove 112 or the second slide groove 212; according to this structure, the connecting pin 313 cannot rotate relative to the first slide groove 112 and the second slide groove 212. When the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in a folded state and the overlapping area of the first slide groove 112 and the second slide groove 212 increases, the connecting pin 313 can slide in the overlapping area, so that the seat support joint 310 can be rotated forward or backward relative to the front foot joint 110 and the rear foot joint 210 to achieve folding; when the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in an open state and the overlapping area of the first slide groove 112 and the second slide groove 212 decreases, the connecting pin 313 is limited by the first slide groove 112 and the second slide groove 212, and the connecting pin 313 also limits the further opening of the front foot joint 110 and the rear foot joint 210. At this time, the connecting pin 313 can play an auxiliary limiting role for the seat support joint 310.

In another embodiment shown in FIG. 7a to FIG. 7c , the first slide groove 112 and the second slide groove 212 are in a straight line shape, and the diameter of the cross section of the connecting pin 313 is less than or equal to the width of the first slide groove 112 and the second slide groove 212; the connecting pin 313 can rotate in the first slide groove 112 and the second slide groove 212 to realize the seat support joint 310 to rotate forward or backward relative to the front foot joint 110 and the rear foot joint 210 to realize folding. In this embodiment, the rotation of the seat support joint 310 is not restricted even when the infant carrier is in the open state.

In other embodiments different from the above two embodiments, the first sliding groove 112 and the second sliding groove 212 may also be in an arc shape or other shapes.

As shown in Fig. 2, Fig. 6 and Fig. 7: a first support portion 113 is provided on the side of the front foot joint 110 facing the front foot frame 100 in a direction parallel to the rotation axis, and a second support portion 213 is provided on the side of the rear foot joint 210 facing the rear foot frame 200 in a direction parallel to the rotation axis. When the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in an open state, the first support portion 113 and the second support portion 213 are separated from each other; when the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in a folded state, the first support portion 113 and the second support portion 213 are close to each other. The seat support joint 310 protrudes to both sides to form a first support arm 311 and a second support arm 312 respectively. When the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in an open state, the first support arm 311 abuts against the first support portion 113, and the second support arm 312 abuts against the second support portion 213.

It can be understood that the first support part 113 and the second support part 213 are arranged on the path of the seat support joint 310 rotating relative to the front foot joint 110 and the rear foot joint 210. When the infant carrier is in the open state, the front foot joint 110 and the rear foot joint 210 are open, the first support part 113 and the second support part 213 are separated, the first support part 311 abuts against the first support part 113, and the second support arm 312 abuts against the second support part 213 to limit the rotation of the seat support joint 310 relative to the front foot joint 110 and the rear foot joint 210, so as to achieve reliable limiting of the seat support joint 310. When the infant carrier is in the folded state, the front foot joint 110 and the rear foot joint 210 are folded, the first support part 113 and the second support part 213 are close to each other, and the seat support joint 310 can rotate relative to the front foot joint 110 and the rear foot joint 210 to achieve forward folding or backward folding.

Specifically, as shown in FIG. 2 and FIG. 3 , in this embodiment, the first support portion 113 and the second support portion 213 are tubular structures respectively. In other embodiments different from this embodiment, the first support portion 113 and the second support portion 213 may also be long rod-shaped. The first support arm 311 and the second support arm 312 are bent toward the first support portion 113 and the second support portion 213 respectively, so that when the front foot joint 110 and the rear foot joint 210 rotate to the infant carrier in the open state, the first support arm 311 and the second support arm 312 correspondingly clamp the first support portion 113 and the second support portion 213. Furthermore, the first support portion 113 and the second support portion 213 pass through the entire frame, the first bearing portion 300 and the second bearing portion 300, and the two ends are respectively connected to the front foot joint 110 and the rear foot joint 210 arranged on the two opposite inner sides of the frame. Based on the arrangement of the first support portion 113 and the second support portion 213 , the seat support joints 310 located on both sides of the frame are reliably positioned, thereby being able to provide reliable support to the load-bearing portion 300 mounted on the frame.

2 and 3, the first support portion 113 and the second support portion 213 are respectively provided with sleeves 113a and 213a at the positions where they are clamped with the first support arm 311 and the second support arm 312. The provision of the sleeves 113a and 213a can reduce the friction between the seat support joint 310 and the first support portion 113 and the second support portion 213.

The infant carrier provided by the present invention has the above-mentioned two-way foldable seat structure, so that the carrier 300 can be conveniently folded when it is installed forward or backward. More specifically, in the infant carrier provided by the present invention, the carrier 300 includes a seat portion 330 and a backrest portion 340, and the backrest portion 340 can rotate relative to the seat portion 330 to achieve the folding of the carrier 300, thereby further reducing the volume of the infant carrier of the present invention when folded.

Specifically, as shown in Figures 8 and 9, the backrest portion 340 and the seat portion 330 are rotatably connected, and the seat portion 330 is provided with at least two backrest angle adjustment slots 331 along the arc direction centered on the rotation axis of the backrest portion 340 and the seat portion 330, and the backrest portion 340 is provided with an adjustment pin 341 that moves toward the direction of the rotation axis of the backrest portion 340 and the seat portion 330; the adjustment pin 341 can be selectively inserted into any backrest angle adjustment slot 331 to adjust the inclination angle of the backrest portion 340, or withdraw from the backrest angle adjustment slot 331 so that the backrest portion 340 can rotate relative to the seat portion 330 to fold the bearing portion 300.

Specifically, as shown in Figure 8, the adjustment pin 341 always has a tendency to be inserted into the backrest angle adjustment slot 331; the bearing portion 300 also includes a backrest adjustment handle 350, which is arranged on the side of the backrest portion 340 away from the seat portion 330, and the backrest adjustment handle 350 is connected to the adjustment pin 341 via a rigid traction rope (not shown in the figure); the backrest adjustment handle 350 is operated to drive the adjustment pin 341 to exit the backrest angle adjustment slot 331, so that the backrest portion 340 and the seat portion 330 can rotate relative to each other to adjust the backrest tilt angle or fold the bearing portion 300.

Compared with the prior art, the present invention provides a two-way foldable seat structure, in which the seat support joint 310 can rotate relative to the front foot joint 110 and the rear foot joint 210, and a first support portion 113 is provided on the side of the front foot joint 110 close to the front leg frame, and a second support portion 213 is provided on the side of the rear foot joint 210 close to the rear leg frame, and the seat support joint 310 protrudes toward both sides to form a first support arm 311 and a second support arm 312 respectively, so that when the infant carrier is in a folded state, the first support portion 113 and the second support portion 213 are close to each other, the seat support joint 310 can rotate relative to the front foot joint 110 and the rear foot joint 210, and forward folding is achieved when the seat support joint 310 rotates forward relative to the front foot joint 110 and the rear foot joint 210, and backward folding is achieved when the seat support joint 310 rotates backward relative to the front foot joint 110 and the rear foot joint 210. According to the two-way foldable seat structure provided by the present invention, there is no restriction on the position of the carrying portion when the infant carrier is folded, and the carrying portion 300 can be conveniently folded regardless of whether it is in the forward direction or the backward direction.

The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims (6)

1. A two-way foldable seat structure, suitable for an infant carrier, the infant carrier comprising a front foot joint arranged at the upper end of a front foot frame, a rear foot joint arranged at the upper end of a rear foot frame, and a seat support joint for supporting a load-bearing portion, the front foot joint and the rear foot joint being rotatably connected along a rotation axis, characterized in that: the seat support joint can rotate relative to the front foot joint and the rear foot joint, the seat support joint protrudes to both sides to form a first support arm and a second support arm respectively; the front foot joint is provided with a first support portion along a direction parallel to the rotation axis on one side of the front foot frame, and the rear foot joint is provided with a first support portion along a direction parallel to the rotation axis on one side of the rear foot frame A second support portion is provided in a direction parallel to the rotation axis; when the front foot joint and the rear foot joint rotate to the infant carrier in a folded state, the first support portion and the second support portion are close to each other, and the seat support joint can rotate forward relative to the front foot joint and the rear foot joint to achieve forward folding, or rotate backward to achieve backward folding; when the front foot joint and the rear foot joint rotate to the infant carrier in an open state, the first support portion and the second support portion are separated, the first support arm abuts against the first support portion, and the second support arm abuts against the second support portion, so as to position the seat support joint; The first support portion and the second support portion are respectively provided with shaft sleeves at positions where they are clamped with the first support arm and the second support arm; The front foot joint is provided with a first slide groove, and the rear foot joint is provided with a second slide groove, and the first slide groove and the second slide groove have an overlapping area in a plane perpendicular to the rotation axis; the seat support joint is fixedly connected with a connecting pin on one side facing the front foot joint and the rear foot joint, and the connecting pin is inserted into the first slide groove and the second slide groove to realize the rotatable connection between the seat support joint and the front foot joint and the rear foot joint; The first slide groove and the second slide groove are both in an arc shape with the rotation axis as the center; when the front foot joint and the rear foot joint are rotated to the infant carrier is in an open state, the overlapping area of the first slide groove and the second slide groove is reduced, and the connecting pin is limited by the first slide groove and the second slide groove; when the front foot joint and the rear foot joint are rotated to the infant carrier is in a folded state, the overlapping area of the first slide groove and the second slide groove is increased, and the connecting pin can slide in the overlapping area. 2. The bidirectional foldable seat structure as described in claim 1 is characterized in that the cross-section of the connecting pin is non-circular, and the width of a partial area of the connecting pin cross-section is greater than the width of the first slide groove or the second slide groove. 3. An infant carrier, comprising a front leg frame, a rear leg frame and a bearing part, wherein a front leg joint is arranged at the upper end of the front leg frame, a rear leg joint is arranged at the upper end of the rear leg frame, and the front leg joint and the rear leg joint are rotatably connected along a rotation axis; the bearing part is forwardly installed or backwardly installed via a seat support joint; it is characterized in that: the infant carrier also includes a two-way foldable seat structure as described in any one of claims 1-2, and the two-way foldable seat structure is symmetrically arranged on the left and right sides of the infant carrier. 4. The infant carrier as described in claim 3 is characterized in that the infant carrier also includes an armrest frame, an upper joint is provided at the lower end of the armrest frame, the front foot joint, the rear foot joint and the upper joint are rotatably connected along a rotation axis, one of the front foot joint, the rear foot joint and the upper joint is provided with a bayonet, and the other two of the front foot joint, the rear foot joint and the upper joint are respectively provided with a slot; when the front foot joint, the rear foot joint and the upper joint are rotated until the infant carrier is in an open state, the bayonet moves into the slot to keep the infant carrier in the open state. 5. The infant carrier as described in claim 3 is characterized in that the load-bearing portion includes a seat portion and a backrest portion, the backrest portion and the seat portion are rotatably connected, the seat portion is provided with at least two backrest angle adjustment slots along an arc direction centered on the rotation axis of the backrest portion and the seat portion, and the backrest portion is provided with an adjustment pin that moves in the direction of the rotation axis of the backrest portion and the seat portion; the adjustment pin can be selectively inserted into any of the backrest angle adjustment slots to adjust the inclination angle of the backrest portion, or withdrawn from the backrest angle adjustment slot so that the backrest portion can be rotated relative to the seat portion to fold the load-bearing portion. 6. The infant carrier as described in claim 5 is characterized in that the adjustment pin always has a tendency to be inserted into the backrest angle adjustment slot; the load-bearing portion also includes a backrest adjustment handle, which is arranged on a side of the backrest portion away from the seat portion, and the backrest adjustment handle is connected to the adjustment pin via a rigid traction rope; operating the backrest adjustment handle drives the adjustment pin to exit the backrest angle adjustment slot, so that the backrest portion and the seat portion can be relatively rotated to achieve folding.