FOLDABLE CARRIER, CARRIER FRAME OF A CHILD CARRIER AND CHILD CARRIER

Abstract

The present application relates to a foldable carrier, a carrier frame for a child carrier, and a child carrier. The foldable carrier comprises a seat assembly, an armrest assembly, a backrest assembly, a connecting assembly, and a locking element. The armrest assembly is pivotable relative to the seat assembly and movable between a folded position and an unfolded position, and the armrest assembly is provided with a locking section. The backrest assembly has a folded position and an unfolded position. The connecting assembly is movably connected to the backrest assembly.One end of the locking element is pivotably connected to the connecting arrangement, the other end of the locking element being able to be fitted into the locking section, and the backrest arrangement being folded in a direction approaching the armrest arrangement in order to drive the locking element through the connecting arrangement to be separated from the locking section.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of child carriers and, in particular, to a foldable carrier, a carrier frame of a child carrier and a child carrier. BACKGROUND

[0002] A baby carrier can relieve fatigue caused by holding a baby for a long time, improving people's comfort. Currently available baby carriers, such as strollers or baby dining chairs, are generally foldable and generally include a foldable carrier and a carrier frame. The foldable carrier can be folded together with the carrier frame, reducing the overall occupied volume of the baby carrier, making it easy to store and carry, and improving user comfort.

[0003] For example, the child carrier generally includes a handle section and a front leg section. To facilitate storage and carrying of the child carrier when not in use, the handle section and front leg section are generally foldable relative to each other, thereby reducing the occupied volume of the child carrier.

[0004] Additionally, the foldable straps of some child carriers can be detached from the carrier frame for easy storage. In a typical child carrier in which a foldable strap and a carrier frame are detachable, the carrier frame may be provided with a holder, and the foldable strap of the child carrier may be removably engaged with the holder. SUMMARY

[0005] According to various embodiments of the present application, a foldable carrier, a carrier frame of a child carrier, and a child carrier are provided.

[0006] According to one aspect of the present application, a foldable carrier comprises: a seat assembly; an armrest assembly pivotable relative to the seat assembly and movable between a folded position and a deployed position, the armrest assembly being provided with a locking portion; a backrest assembly having a folded position and an unfolded position; a link assembly movably connected to the backrest assembly; and a locking member, one end of the locking member being pivotally connected to the link assembly, the other end of the locking member being capable of being fitted into the locking portion, wherein the backrest assembly is folded in a direction approaching the armrest assembly to drive the locking member to be separated from the locking portion by the link assembly.

[0007] According to another aspect of the present application, a child carrier comprises a support frame and the foldable carrier as described above.

[0008] According to yet another aspect of the present application, a foldable carrier comprises: a seat tube; seat bottom tubes; a backrest assembly pivotally connected to end portions of the seat bottom tubes; and a front crossbar disposed between the seat bottom tubes at an end remote from the backrest assembly, the foldable carrier further comprising a folding lock mechanism. The folding lock mechanism is disposed between the seat bottom tubes and the front crossbar. When the folding lock mechanism is in a locked state, the seat tube and the seat bottom tubes are locked in a deployed state. When the folding lock mechanism is in an unlocked state, the seat tube and the seat bottom tubes are pivotable relative to each other.

[0009] According to yet another aspect of the present application, a child carrier comprises a foldable carrier, a support frame, and a bracket configured to connect the foldable carrier and the support frame. The foldable carrier comprises: a first portion including a seat tube; and a second portion disposed below the first portion and including a backrest assembly, seat bottom tubes, a front crossbar, and a second folding mechanism. The backrest assembly is pivotally connected to one end of each of the seat bottom tubes. The front crossbar is disposed between the seat bottom tubes at an end remote from the backrest assembly. The second folding mechanism is disposed on the backrest assembly and configured to adjust an inclination angle of the backrest assembly relative to each of the seat bottom tubes.The second section further includes the folding locking mechanism of the foldable carrier as described above.

[0010] According to another aspect of the present application, a support frame of a child carrier is provided. A holder is mounted on the support frame. The holder is configured to be engaged with a foldable support of the child carrier. The support frame has an unfolded state and a folded state, and the holder has an operative position corresponding to the unfolded state and an inoperative position corresponding to the folded state. When the support frame is switched between the unfolded state and the folded state, the support frame drives the holder to switch between the operative position and the inoperative position.

[0011] According to another aspect of the present application, a child carrier comprises a foldable carrier and the carrier frame as described above. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic perspective view of a child carrier according to an embodiment of the present application. Fig. Figure 2 is a schematic perspective view of a foldable carrier in the Fig. 1, wherein the foldable carrier is in an unfolded state. Fig. 3 is a schematic perspective view of the Fig. 2 shown foldable carrier from a different perspective. Fig. 4 is another schematic perspective view of the Fig. 2, wherein the foldable carrier is in a folded state. Fig. 5 is a schematic perspective view of the Fig. 2 from yet another perspective, with the foldable carrier in the unfolded state. Fig. 6 is an enlarged view of a section A in Fig. 5. Fig. 7 is yet another schematic perspective view of the Fig. 2, wherein the foldable carrier is in a partially folded state. Fig. Figure 8 is an enlarged view of a section B in Fig. 7. Fig. 9 is an exploded view of the foldable carrier of Fig. 5. Fig. 10 is an enlarged view of a section C in Fig. 9. Fig. 11 is a partially enlarged view of the Fig. 5, with a side cover and part of a side plate removed. Fig. 12 is another partially enlarged view of the Fig. 5, with the side cover and part of the side plate removed. Fig. 13 is a schematic perspective view of the Fig. 11 components shown from a different perspective. Fig. 14 is a side view of the Fig. 2, wherein the foldable carrier is in the unfolded state. Fig. 15 is an enlarged view of a section D in Fig. 14. Fig. 16 is another side view of the Fig. 2, wherein the foldable carrier is in an intermediate state during switching from the unfolded state to the folded state. Fig. 17 is an enlarged view of a section E in Fig. 16. Fig. 18 is another side view of the Fig. 2, wherein the foldable carrier is in the folded state. Fig. 19 is an enlarged view of a section F in Fig. 18. Fig. 20 is another side view of the Fig. 2, wherein the foldable carrier is in an intermediate state during switching from the folded state to the unfolded state. Fig. 21 is an enlarged view of a section G in Fig. 20. Fig. 22 is an exploded view of the foldable carrier of Fig. 11. Fig. 23 is a partial cross-sectional view of the foldable carrier according to an embodiment of the present application with an angle adjustment locking member in a first drive position. Fig. 24 is an enlarged view of a section H in Fig. 23. Fig. 25 is a partial cross-sectional view of a backrest assembly in the Fig. 23, wherein the angle adjustment locking element is in a second drive position. Fig. 26 is an enlarged view of a section I in Fig. 25. Fig. 27 is a schematic perspective view of an armrest assembly and a seat assembly in the Fig. 23 shown foldable carrier. Fig. 28 is an exploded view of the Fig. Backrest arrangement shown in Figure 25. Fig. 29 is an enlarged view of J in Fig. 28. Fig. 30 is a schematic diagram of a child carrier according to another embodiment of the present application. Fig. 31 is a schematic representation of a foldable carrier of the Fig. 30 shown child carrier. Fig. 32 is a schematic representation of a backrest arrangement in the foldable carrier of the Fig. 30 shown child carrier with an angle of inclination that differs from that shown in Fig. 31 differs. Fig. 33 is a further schematic representation of the foldable carrier of the Fig. 30 shown child carrier in a folded state. Fig. 34 and Fig. 35 are schematic side views of the backrest arrangements in the Fig. 30 child carriers shown with different angles of inclination relative to the seat base tubes. Fig. 36 is a schematic representation of a position of the foldable support of the Fig. 30 shown child carrier. Fig. 37 and Fig. 38 are schematic representations of two other positions of the foldable support of the Fig. 30 shown child carrier. Fig. 39 is a schematic exploded view of a second folding mechanism of the Fig. 30 shown child carrier. Fig. 40 is another schematic enlarged exploded view of the second folding mechanism of the Fig. 30 shown child carrier. Fig. 41 is a schematic representation of a folding locking mechanism of the Fig. 30 shown child carrier in a locked state. Fig. 42 is a schematic representation of the folding locking mechanism of the Fig. 30 shown child carrier in an unlocked state. Fig. 43 is another perspective view showing the Fig. 1 shows a schematic view of the child carrier shown. Fig. 44 is a perspective view showing a support frame of the Fig. 43, wherein the support frame is in an unfolded state and a holder is in an operative position. Fig. 45 is a perspective view showing a cross section along a line AA in Fig. 44 shows schematically. Fig. 46 is a schematic diagram showing connection relationships between a front leg frame, a handle frame, a support frame and the Fig. 45 shows the holder shown schematically. Fig. 47 is a perspective view showing the support frame of the Fig. 43, wherein the support frame is in a semi-folded state. Fig. 48 is a perspective view showing a cross section along a line EE in Fig. 47 shows schematically. Fig. 49 is a perspective view showing a Fig. 43, wherein the support frame is in a folded state and the holder is in an inoperative position. Fig. 50 is a schematic diagram showing connection relationships between a front leg frame, a handle frame, a support frame and the Fig. 49 shows the holder shown schematically. Explanations for reference symbols:

[0012] 10. Foldable carrier, 20. Carrier frame, 1. Front leg frame, 2. Handle frame, 25. Connecting pin, 2100. Threaded hole, 24. Fourth engagement structure, 100. Seat assembly, 110. Seat body, 120. Side plate, 121. First side guard, 1211. Guide groove, 1212. First position, 1213. Second position, 1214. Lock hole, 1215. First pivot hole, 122. Second side guard, 1221. Cylindrical projection, 130. Side cover, S100. First section, S110. First folding mechanism, S120. Seat tube, S130. Upper section of seat tube, S140. Lower section of seat tube, S150. Swivel base, 20. Support frame, 21. Handle member, 22. Undercarriage, 23. Wheel, 200. Armrest assembly, 210. Armrest body, 220. Armrest support rod, 221. Locking section, 221a. Locking groove, 221b. Bottom wall, 222. Engagement hole, S200. Second section, S210. Second folding mechanism, S211. Control member, S212. Adjustment member, S2121. Backrest adjustment locking member, S2122.Backrest adjustment lock gear, S213. Tension member, S214. Return member, S230. Seat bottom tube, S241. Front crossbar, S242. Rear crossbar, S250. Connecting section, S251. Recess, S270. Support belt, S260. Folding lock mechanism, S261. Locking pin, S262. Rotating member, S2621. Projection, S263. Driving member, S2631. Driving member inner groove, S2632. Projection, S264. Fixing member, S2641. Fixing member inner groove, S265. First elastic member, S266. Second elastic member, S267. Third elastic element, 300. Backrest assembly, 310. Backrest body, 320. Backrest support assembly, 321. Backrest support rod, 3211. First through hole, 322. Fixing element, 3221. Through hole, 323. Adjustment locking element, 3222. Second through hole, 330. Angle adjustment mechanism, 331. Angle adjustment locking element, 331a. Guide projection, 331b. Limiting circular portion, 332. Operating assembly, 332a. Operating handle, 332b.Connecting element, 332c. Tension element, 333. Drive assembly, 333a. Rod element, 333b. Drive post, 333c. Rod return element, 333d. Drive chamfer, 334. Mounting cover, 334a. Mounting groove, 335m. Angle adjustment return member, 3. Support frame, 31. Upper bracket, 3100. First cross arm, 3200. Second cross arm, 32. Lower bracket, 34. Second engagement structure, 4. Holder, 401. Slide hole, 4011. Upper end, 4012. Lower end, 402. Cover plate, 403. Receiving portion, 4030. Bottom opening, 41. First engagement structure, 43. Third engagement structure, 400. Link assembly, 410. Drive member, 411. Drive groove, 420. Link member, 430. First return member, 440. Drive pin, 450. Guide pin, 500. Locking member, 500a. Locking pin, 600. Second return member, 600a. Tension spring, M. first pivot point, N. second pivot point, O. third pivot point, P. first circle, Q. second circle, 61. front wheel, 62. rear wheel, 71. pedal frame, 72. crossbar, 8.Seat, 80. Handle section, 91. First pivot point, 92. Second pivot point, 93. Third pivot point, 94. Fourth pivot point, 95. Fifth pivot point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] To make the above objects, technical solutions, and advantages of the present application more apparent and understandable, the present application will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be understood that specific embodiments described herein are intended only to illustrate the present application and are not intended to limit the scope of the present application.

[0014] It should be noted that when an element is referred to as "attached to another element," it may be directly attached to the other element, or an intermediate element may be present. When an element is considered "connected to another element," it may be directly attached to the other element, or an intermediate element may coexist. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and are not intended as unique embodiments.

[0015] Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used herein in the description of this application are for the sole purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed elements.

[0016] In one embodiment of the present application, a foldable carrier is provided. The foldable carrier comprises: a seat assembly; an armrest assembly connected to the seat assembly; and a backrest assembly having a folded position and a deployed position and including a backrest body and backrest support assemblies connected to two ends of the backrest body, and an adjustment assembly. The adjustment assembly comprises: an actuating mechanism disposed on the backrest body; and a driving mechanism configured to adjust a tilt angle of the backrest assembly relative to the seat assembly. In the deployed position, the actuating mechanism is operable to drive the driving mechanism to enable the tilt angle of the backrest assembly relative to the seat assembly to be adjusted at multiple angles.For example, the actuating mechanism is operable to drive the drive mechanism to enable the recline angle of the backrest assembly relative to the seat assembly to be adjusted in four stages. In various embodiments of the present application, the adjustment assembly may be an angle adjustment mechanism or a second folding locking mechanism, as described below. Specific details of a configuration of the adjustment assembly are further described by the following embodiments.

[0017] As in Fig. 1, an embodiment of the present application proposes a child carrier. The child carrier includes a foldable carrier 10 and a carrier frame 20. The foldable carrier 10 may be detachably or non-detachably mounted to the carrier frame 20. For example, the foldable carrier 10 may be detachably connected to the carrier frame 20 by a holder 4, as shown in Fig. 1. Herein, a description is based on an example in which the child carrier is a stroller, but the type of the child carrier is not limited to the stroller. The child carrier of the present application can be understood in a broad sense, including, but not limited to, a full-size stroller, a lightweight foldable stroller, a high-view stroller, an umbrella stroller, or the like. Of course, in other embodiments, the child carrier may alternatively be a bassinet, a car safety seat, a rocker chair, a high chair, a booster seat, or the like. The foldable carrier 10 and an armrest support bar 220 of the child carrier can be folded together with folding a backrest support assembly 320, which is convenient to use.

[0018] In particular, as in Fig. 1 and Fig. As shown in Figure 12, the foldable carrier 10 includes a seat assembly 100, an armrest assembly 200, a backrest assembly 300, a connecting assembly 400, a locking member 500, and a second return member 600. The seat assembly 100 includes a seat body 110, two side panels 120, and two side covers 130. The seat body 110 is configured to support a child. The two side panels 120 are each connected to two opposite sides of the seat body 110, i.e., the left and right sides of the seat body 110, and the two side panels 120 are opposite each other. The two side covers 130 are also respectively arranged on the two opposite sides of the seat body 110, ie, the left and right sides of the seat body 110, and are both arranged on sides of the side plates 120 facing away from the seat body 110, ie, an outer side surface of the seat body 110.On each side of the seat body 110, the side plate 120 and the side cover 130 enclose a receiving space. The armrest assembly 200 includes an armrest body 210 and an armrest support rod 220 connected to two ends of the armrest body 210. The backrest assembly 300 includes a backrest body 310 and backrest support assemblies 320 connected to two ends of the backrest body 310. The backrest assembly 300 further includes an angle adjustment mechanism 330 (as shown in FIG. Fig. 23 and Fig. 25) as the above adjustment assembly. The two ends of the armrest body 210 are detachably connected to the armrest support rod 220 arranged on the two sides of the seat body 110 to facilitate the child's sitting. The two ends of the backrest body 310 are respectively connected to the backrest support assemblies 320 arranged on the two sides of the seat body 110. The angle adjustment mechanism 330 is configured to adjust an inclination angle of the backrest support assemblies 320 on the two sides relative to the seat assembly 100 to provide comfortable sitting (reclining) angles for the child as needed. The left and right sides of the seat body 110 are respectively provided with the armrest support rod 220, the backrest support assembly 320, the link assembly 400, the locking member 500, and the second return member 600.In addition, on each of the sides of the seat body 110, both the connecting assembly 400 and the locking element 500 are arranged in the receiving space.

[0019] A configuration of the foldable carrier 10 will be specifically described below, by way of example, the side plate 120, the side cover 130, the armrest support rod 220, the backrest support assembly 320, the angle adjustment mechanism 330, the link assembly 400, the locking member 500, and the second return member 600 are arranged on one side of the seat body 110.

[0020] In particular, in this embodiment, as shown in the Fig. 14 and Fig. 15, the side plate 120 includes a first side guard 121 on a rear side and a second side guard 122 on a front side. The first side guard 121 and the second side guard 122 are connected to each other. In this embodiment, the seat body 110 is integrally formed with two first side guards 121 and two second side guards 122. Of course, in other embodiments, the seat body 110, the two first side guards 121, and the two second side guards 122 may alternatively be independent of each other. The first side guard 121 includes a first pivot hole 1215. An inner side of the first side guard 121 further includes a guide groove 1211. The guide groove 1211 is an arc groove bent around the first pivot hole 1215. A plurality of locking holes 1214 are further provided at lower positions of the first side guard 121.

[0021] In particular, as in the Fig. 14 and Fig. 15, the armrest support rod 220 is pivotally connected to the second side guard 122 at a third pivot point O, and a locking portion 221 is arranged on a rear side of the armrest support rod 220, that is, a side near a backrest support rod 321. In this embodiment, the locking portion 221 is a locking groove 221a. As shown in Fig. 12, a first circle P and a second circle Q having different radii are drawn with the third pivot point O as a center, and the radius of the second circle Q is larger than the radius of the first circle P. The first circle P is tangent to a bottom wall 221b of the locking groove 221a, and the second circle Q is tangent to a notch of the locking groove 221a. That is, the locking groove 221a extends along a radial direction of the first circle P. In this way, the locking pin 500a (described in detail later) is inserted into the locking groove 221a in the radial direction of the first circle P (or the second circle Q). When the armrest support rod 220 is pushed, a direction of force applied to the armrest support rod 220 is parallel to a tangential direction of the second circle Q passing through the locking pin 500a.The tangential direction is perpendicular to a longitudinal direction of the locking pin 500a. This prevents the locking pin 500a from being easily crushed, nor can it be accidentally or easily removed, which can better hold the armrest support rod 220 in a deployed position. Additionally, the armrest support rod can only be folded after the locking pin 500a has been completely removed from the locking hole 221a. This also allows the armrest support rod 220 to be folded more smoothly.

[0022] In particular, as in the Fig. 5 to Fig. 10, the backrest support assembly 320 includes a backrest support rod 321 and a fixing member 322. The backrest support rod 321 includes a first through hole 3211 (see Fig. 6). The backrest support rod 321 and the fixing element 322 are fixedly connected. In particular, the fixing element 322 generally has a fan-shaped sheet metal structure, a radial side of the fixing element 322 is fixedly connected to the backrest support rod 321, and an approximate geometric center portion of the fixing element 322 is pivotally connected to the first side guard 121 at a first pivot point M. In particular, the fixing element 322 is pivotally connected to the first pivot hole 1215 (see Fig. 10) is pivotally connected to the first side guard 121 by a pivot shaft (not shown in the figure). That is, the first pivot point M is located at a center of the first pivot hole 1215. The fixing member 322 is provided with a through hole 3221. The through hole 3221 is offset from the first pivot point M. A center of the through hole 3221 is located at a second pivot point N. The fixing member 322 is further provided with a second through hole 3222 through which an angle adjustment locking member 331 (described in detail later) of the angle adjustment mechanism 330 extends (see, for example, Fig. 11). In this embodiment, the second through-hole 3222 is an elongated hole. Certainly, in another embodiment, the second through-hole 3222 may alternatively be a round hole.

[0023] The backrest assembly 300 has a folded position and a deployed position. In particular, as shown in Fig. 22 to Fig. As shown in Figure 26, the angle adjustment mechanism 330 includes an actuating assembly 332 as the above actuating mechanism and a driving assembly 333 as the above driving mechanism. The angle adjustment mechanism 330 further includes an angle adjustment locking member 331, a mounting cover 334, and an angle adjustment reset member 335. One end of the angle adjustment locking member 331 is disposed on a side of the backrest support rod 321 facing the seat body 110, that is, an inner side of the seat body 110.During folding or unfolding of the backrest support assembly 320, the other end of the angle adjustment locking member 331 extends through the first through-hole 3211 of the backrest support rod 321 and the second through-hole 3222 of the fixing member 322, and is fitted and locked into one of the locking holes 1214 of the first side guard 121 at different positions, so that the backrest support assembly 320 is fixed at different angles relative to the seat assembly 100. Specifically, due to different requirements for the angle of the backrest support assembly 320 relative to the seat assembly 100, an adjustment locking member 323 may extend through the first through-hole 3211 and the second through-hole 3222 and be inserted into one of the locking holes 1214 of the first side guard 121.Specifically, the angle adjustment locking element 331 has a first drive position and a second drive position. When the angle adjustment locking element 331 is in the first drive position, the angle adjustment locking element 331 is inserted into one of the locking holes 1214. That is, the backrest assembly 300 is fixed at a specific inclination angle relative to the seat body 110. When the angle adjustment locking element 331 is in the second drive position, the angle adjustment locking element 331 is retracted from the locking hole 1214. In this case, the inclination angle of the backrest assembly 300 relative to the seat body 110 can be adjusted.

[0024] In this embodiment, as in Fig. 11, one end of the angle adjustment locking element 331 adjacent to the seat body 110 may be provided with a circular limiting portion 331b. A diameter of the circular limiting portion 331b is larger than a hole diameter of the first through-hole 3211. In this way, the angle adjustment locking element 331 may be prevented from being separated from the backrest support assembly 320. Certainly, in another embodiment, as shown in Fig. 24, a mounting cover 334 may alternatively be provided. The mounting cover 334 is attached to or formed on a side of the backrest support rod 321 facing the seat body 110. A side of the mounting cover 334 facing the backrest support rod 321 is provided with a mounting groove 334a arranged opposite and communicating with the first through hole 3211. One end of the angle adjustment locking member 331 is movably arranged in the mounting groove 334a. In particular, as shown in Fig. 28 and Fig. 29, two guide projections 331a are arranged symmetrically on a side wall of the angle adjustment locking member 331. The mounting groove 334a has a cross-sectional shape that matches that of the angle adjustment locking member 331. That is, when one end of the angle adjustment locking member 331 is movably arranged in the mounting groove 334a, the two guide projections 331a cooperate with a side wall of the mounting groove 334a. In this way, the movement of the angle adjustment locking member 331 in the mounting groove 334a can be guided, so that the angle adjustment locking member 331 can slide more smoothly in the mounting groove 334a.Further, two ends of the angle adjustment return member 335 are respectively abutted against a bottom wall of the mounting groove 334a and the angle adjustment locking member 331 (specifically, the two guide projections 331a), and the angle adjustment return member 335 constantly allows the angle adjustment locking member 331 to move in a direction approaching the first side guard 121 (ie, a direction opposite to a direction indicated by F4 in FIG. Fig. 26). In this embodiment, the angle adjustment return element 335 is a spring.

[0025] When the backrest assembly 300 is in the deployed position, the actuating assembly 332 is operable to drive the drive assembly 333 to enable the angle of inclination of the backrest assembly 300 relative to the seat assembly 100 to be adjusted at a plurality of angles. In particular, as shown in Fig. 23 and Fig. As shown in Figure 25, the operating assembly 332 includes an operating handle 332a, two tension return members (not shown in the figures), two connecting members 332b, and a tension member 332c. The operating handle 332a is rotatably disposed on the backrest body 310. The two connecting members 332b are each configured to connect ends of two tension members 332c, which are respectively disposed on two sides of the backrest body 310. The other ends of the two tension members 332c are each connected to rod members 333a (described in detail later) of the angle adjustment mechanism 330, which are disposed on the two sides of the seat body 110. In this embodiment, the tension member 332c is a steel wire. The two connecting members 332b are movable and spaced apart from each other on the backrest body 110.In this embodiment, the two tension return elements are both torsion springs and are respectively connected between the two connecting elements 332b and the operating handle 332a. Taking the torsion spring and the connecting element 332b on one side as an example, the torsion spring is threaded onto a rotating shaft of the operating handle 332a, and two ends of the torsion spring are respectively connected to the operating handle 332a and the connecting element 332b. When a user presses the operating handle 332a, the operating handle 332a can be rotated around the backrest body 310 and, through the torsion spring, drive the connecting element 332b to move, so that the connecting element 332b pulls the tension element 332c upward. When the user does not press the operating handle 332a, the operating handle 332a can be returned under the action of the torsion spring and drive the connecting member 332b to be returned.

[0026] In particular, as in the Fig. 24 and Fig. As shown in Fig. 26, the drive assembly 333 includes a rod member 333a, a drive post 333b, and a rod return member 333c. The rod member 333a is movably disposed in the backrest support rod 320 and extends in a longitudinal direction of the backrest support rod 320. One end of the rod member 333a is connected to one end of the tension member 332c away from the connecting member 332b, and an approximately middle portion of the rod member 333a includes a drive slope 333d. The rod return member 333c is embedded in a middle and upper portion of the rod member 333a. Two ends of the rod return member 333c abut the rod member 333a and the backrest support rod 320, respectively. The rod return element 333c constantly allows the rod element 333a to move in one direction (ie, a direction opposite to F3 in Fig. 26) to move opposite to a direction in which the pulling member 332c is pulled. When the user does not press the operating handle 332a, the rod member 333a can be returned under the action of the rod return member 333c. In this embodiment, the rod return member 333c is a spring. The drive post 333b is fixed to an approximately central portion of the angle adjustment locking member 331. In this embodiment, the drive post 333b is arranged to be perpendicular to the angle adjustment locking member 331. Of course, in other embodiments, an angle formed between the drive post 333b and the angle adjustment locking member 331 may be greater than 90 degrees or less than 90 degrees. The drive post 333b abuts the drive slope 333d.

[0027] When the user pulls the pull member 332c through the operating handle 332a, the pull member 332c pulls the rod member 333a to move in the direction F3. In this case, driven by the drive slope 333d, the drive post 333b drives the angle adjustment locking member 331 to move in the direction F4 from the first drive position to the second drive position, so that the angle adjustment locking member 331 is released from one of the locking holes 1214. In this case, the backrest body 310 or the backrest support rod 321 can be moved to adjust the inclination angle of the backrest assembly 300 relative to the seat body 110.After the user adjusts the angle of the backrest assembly 300 relative to the seat body 110, the operating handle 332a can be released. The operating handle 332a is returned under the action of the tension return element, and the connecting element 332b is driven to return simultaneously. The connecting element 332b does not pull the tension element 332c in the direction F3. The rod element 333a, to which the tension element 332c exerts no force, moves in a direction opposite to the direction F3 under the action of the rod return element 333c.In this case, the drive post 333b drives the angle adjustment locking member 331 to move in the direction opposite to the direction F4 under the action of the drive slope 333d, and is inserted into another locking hole 1214 under an elastic force of the angle adjustment return member 335, so that the backrest assembly 300 is fixed at a different inclination angle relative to the seat body 110. In this way, the angle of the backrest assembly 300 relative to the seat body 110 is adjusted.

[0028] Of course, the actuating assembly 332 and the driving assembly 333 in this embodiment are for reference only. In other embodiments, the actuating assembly 332 and the driving assembly 333 may alternatively be in other forms.

[0029] In particular, as in the Fig. 11 to Fig. 13, the connection assembly 400 includes a drive element 410, a connecting element 420, a first return element 430, a drive pin 440, and a guide pin 450. The drive pin 440 is attached to one end of the drive element 410. In this embodiment, the drive pin 440 and the drive element 410 are integrally formed. Certainly, in other embodiments, the drive pin 440 and the drive element 410 may alternatively be two separate components. An end of the drive pin 440 remote from the drive element 410 is pivotally connected to the fixing element 322 at the second pivot point N (see Fig. 10). In particular, the drive pin 440 extends through the guide groove 1211 of the first side guard 121 and is inserted into the through hole 3221 of the fixing member 322, and the drive pin 440 can slide along the guide groove 1211 (see Fig. 11 and Fig. 15). In this embodiment, as shown in the Fig. 14 to Fig. 21, the guide groove 1211 is an arc groove bent around the first pivot point M. The guide groove 1211 has a first position 1212 and a second position 1213. As shown in Fig. 19, the drive pin 440 is in the first position 1212 when the backrest support rod 321 is in the folded position. As shown in Fig. As shown in Figure 15, the drive pin 440 is in the second position 1213 when the backrest support rod 321 is in the deployed position. Furthermore, a first limiting member (not shown in the figure) may be slid onto an end of the drive pin 440 remote from the drive member 410. The first limiting member is disposed on a side of the fixing member 322 remote from the first side guard 121. The first limiting member may prevent the drive pin 440 from being separated from the through-hole 3221. Optionally, the first limiting member may be a ring clamp, a knurled rivet, a nut, or the like.

[0030] As in the Fig. 15 and Fig. As shown in Fig. 22, the drive member 410 is provided with a drive groove 411 arranged in a longitudinal direction thereof. The link member 420 roughly has a long rod structure. One end of the link member 420 is pivotally connected to the locking member 500, and the other end of the link member 420 is slidably connected to an end of the drive member 410 remote from the drive pin 440. Specifically, the guide pin 450 is inserted into and fixed to the other end of the link member 420. For example, the guide pin 450 may be vertically fixed to the link member 420, and the guide pin 450 is inserted into the drive groove 411 and is movable along the drive groove 411. The first return member 430 is arranged in the drive groove 411. Two ends of the first return element 430 each abut the guide pin 450 and an inner wall of the drive groove 411.The first return element 430 constantly allows the connecting element 420 to move in a direction away from the drive pin 440.

[0031] In this embodiment, as in Fig. As shown in Figure 15, the locking member 500 may be a locking pin 500a. One end of the locking pin 500a is pivotally connected to the connecting member 420, and the other end of the locking pin 500a may be inserted and fitted into the locking groove 221a to lock the armrest support rod 220 in a deployed position. Two ends of the second return member 600 are connected to the second side guard 122 and the armrest support rod 220, respectively. The second return member 600 constantly allows the armrest support rod 220 to rotate toward the deployed position. In this embodiment, the second return member 600 may be a tension spring 600a. Specifically, a cylindrical projection 1221 may be provided on the second side guard 122, and an engagement hole 222 offset from the third pivot point O may be provided on the armrest support rod 220.One end of the tension spring 600a is slid onto the cylindrical protrusion 1221, and the other end of the tension spring 600a is hooked into the engagement hole 222. Of course, the second return member 600 can be mounted in other ways, and this is not limited thereto. For example, both the second side guard 122 and the armrest support rod 220 can be provided with the cylindrical protrusions 1221 or the engagement holes 222, etc.

[0032] Certainly, in other embodiments, the locking portion 221 is not limited to the locking groove 221a, and the locking member 500 is not limited to the locking pin 500a. For example, alternatively, the locking portion 221 may be a protrusion disposed on the armrest support rod 220, the locking member 500 may be provided with a recess that fits the locking protrusion, etc., provided that the locking portion 221 and the locking member 500 can be fitted into or separated from each other to realize locking and releasing of the armrest support rod 220.

[0033] A functional principle of the foldable carrier 10 described above is particularly as follows.

[0034] When it is necessary to fold the foldable carrier 10 into an unfolded state as shown in Fig. 14 and Fig. 15, the backrest assembly 300 is rotated in a direction approaching the armrest assembly 200, ie, the backrest support rod 321 drives the fixing element 322 (as shown in Fig. 8) to rotate in the direction F1, as shown in Fig. 14, so that the fixing element 322 drives the drive pin 440 to slide from the second position 1213 to the first position 1212 along the guide groove 1211 (see Fig. 16 to Fig. 19). In this case, the drive element 410 drives the locking pin 500a through the connecting element 420 to move in the direction F2, as shown in Fig. 14 or Fig. 16, until the locking pin 500a is separated from the locking groove 221a, so that the armrest support rod 220 is released and can be pivoted relative to the seat assembly 100. In this case, the first return element 430 is compressed. At the same time, as in Fig. 16 and Fig. 17, the backrest support rod 321, which rotates in the direction F1, exerts a force in the direction F1 on the armrest body 210, so that the armrest assembly 200 is also correspondingly rotated into the folded position in the direction F1, thereby realizing an overall folding of the foldable carrier 10, as shown in Fig. 18 and Fig. 19. In this case, the second return element 600 is stretched. As shown in Fig. 4, Fig. 18 and Fig. 19, when the backrest assembly 300 is in the folded position, the seat assembly 100, the armrest assembly 200, and the backrest assembly 300 are arranged one above the other, and the armrest assembly 200 is arranged between the seat assembly and the backrest assembly 300.

[0035] When it is necessary to unfold the foldable carrier 10 in a folded state, as in Fig. 18 and Fig. 19, the backrest assembly 300 is rotated in a direction away from the armrest assembly 200. As shown in Fig. 20 and Fig. As shown in Figure 21, the armrest assembly 200, to which the backrest support rod 321 exerts no force, is returned to the deployed position in the direction opposite to the direction F1 under the action of the second return element 600. In this case, the backrest support rod 321 drives the fixing element 322 to rotate in the direction opposite to the direction F1, as shown in Fig. 20, so that the fixing element 322 drives the drive pin 440 to slide from the first position 1212 to the second position 1213 along the guide groove 1211, and at the same time, the first return element 430 pushes the locking pin 500a to be returned. In this way, under the combined action of the drive pin 440 and the first return element 430, the locking pin 500a is moved in the direction opposite to the direction F2 into the locking groove 221a formed in the armrest support rod 220, thereby locking the armrest support rod 220 in the deployed position, as shown in Fig. 14 and Fig. 15. Since the drive member 410, the connecting member 420, the guide groove 1211, and the first return member 430 can cooperate with each other, the locking pin 500a can be moved more smoothly to be inserted into, fitted into, or separated from the locking groove 221a during the unfolding and folding of the foldable carrier 10.

[0036] The above foldable carrier 10 and the child carrier incorporating the foldable carrier 10 have at least the following technical features.

[0037] In the above foldable carrier 10 and the child carrier incorporating the foldable carrier 10, the armrest support rod 220 can be pivoted relative to the seat assembly 100 and thus moved between the folded position and the unfolded position, and the backrest support rod 321 also has the folded position and the unfolded position. When the foldable carrier 10 is unfolded, the locking member 500 is fitted into the locking portion 221 and locked to lock the armrest support rod 220 in the unfolded position.When it is necessary to fold the foldable carrier 10, only the backrest assembly 300 needs to be folded in the direction approaching the armrest support rod 220, and the locking member 500 pivotally connected to the link assembly 400 can be driven by the link assembly 400 to be separated from the locking portion 221, thereby releasing the armrest support rod 220, so that the backrest support assembly 320 can press against the armrest support rod 220 to achieve linked folding. In this way, the foldable carrier 10 realizes the linked folding of the armrest support rod 220 together with the backrest support assembly 320 through a simple structure. That is, the foldable carrier 10 and an armrest of the child carrier can be folded together with the backrest, which is convenient in use.

[0038] The foldable carrier 10 and the carrier frame 20 of the child carrier can be connected to each other by a holder 4. Fig. 30 and Fig. 31 schematically show a configuration of a foldable carrier 10 of a child carrier according to another embodiment of the present application. As in Fig. 30, the foldable carrier 10 is arranged entirely above the support frame 20, which increases a height of the foldable carrier 10. The support frame 20 generally includes a handle member 21, a subframe 22, and wheels 23. The handle member 21 extends obliquely upward and rearward from the wheels 23 to facilitate an operator to push a stroller 1 by pressing the handle member 21. Two holders 4 may be provided. The two holders 4 are arranged to be bilaterally symmetrical with respect to the entire child carrier.

[0039] As in Fig. 31, the foldable carrier 10 of the present application may include a seat assembly 100; an armrest assembly 200 connected to the seat assembly 100; and a backrest assembly 300 having a folded position and a deployed position. The seat assembly 100 may include: a seat tube S120; seat bottom tubes S230; a front crossbar S241 disposed between the seat bottom tubes S230 at an end remote from the backrest assembly 300; and folding locking mechanisms S260 disposed between the seat bottom tubes S230 and the front crossbar S241. When the folding locking mechanism S260 is in a locked state, the seat tube S120 and the seat bottom tubes S230 are locked in a deployed state. When the folding lock mechanism S260 is in an unlocked state, the seat tube S120 and the seat base tubes S230 can pivot relative to each other.The backrest assembly 300 is pivotally connected to one end of the seat bottom tube S230. Additionally, the seat assembly 100 may further include a rear crossbar S242. The rear crossbar S242 is disposed between the two seat bottom tubes S230 at one end adjacent to the backrest assembly 300.

[0040] In addition, from a spatial point of view, the foldable carrier 10 of the present application as a whole is roughly divided into two parts, namely a first section S100 arranged above and a second section S200 arranged below. As shown in Fig. 31, the first section S100 generally includes the armrest assembly 200, the seat tube S120, and a first folding mechanism S110. The seat tube is divided into an upper seat tube section S130 and a lower seat tube section S140. The upper seat tube section S130 is connected to the lower seat tube section S140 by a pivot base S150. The first folding mechanism S110 may be disposed on the seat tube S120 to facilitate operation. The upper seat tube section S130 and the lower seat tube section S140 are pivotally connected to each other by the pivot base S150. Therefore, the upper seat tube section S130 and the lower seat tube section S140 can be folded relative to each other by the first folding mechanism S110.

[0041] As in Fig. 31, the second portion S200 generally includes: the backrest assembly 300; the seat bottom tubes S230 (in the embodiment shown in the figure, two seat bottom tubes S230 are provided, and the two seat bottom tubes S230 are arranged parallel to each other); the front crossbar S241 disposed between the two seat bottom tubes S230 at the end remote from the backrest assembly 300; the rear crossbar S242 disposed between the two seat bottom tubes S230 at the end adjacent to the backrest assembly 300; and a connecting portion S250. The front crossbar S241 is pivotally connected to the seat bottom tube S230 through the connecting portion S250. The backrest assembly 300 is pivotally connected to one end of the seat bottom tube S230. In particular, the backrest assembly 300 is pivotally connected to one end of the seat bottom tube S230 adjacent the rear crossbar S242.Additionally, an inclination angle of the backrest assembly 300 relative to the seat bottom tube S230 is adjustable. The second section S220 further includes a support belt S270. As shown in FIG. Fig. 31, two support belts S270 may be provided. The two support belts S270 are arranged so as to be bilaterally symmetrical with respect to the entire child carrier. Each of the support belts S270 is attached between the seat bottom tube S230 and the holder 4 of the child carrier, and as shown in Fig. 31, the support belt S270 is arranged closer to the rear crossbar S242 to provide better support for the foldable carrier 10.

[0042] In one embodiment of the present application, the backrest assembly 300 includes a backrest body 310 and backrest support assemblies 320 connected to two ends of the backrest body 310, and further includes a second folding mechanism S210 (as shown in Fig. 39 and Fig. 40) than the above adjustment assembly. The second folding mechanism S210 is arranged on the backrest body 310 to facilitate operation. The two ends of the backrest body 310 are respectively connected to the backrest support assemblies 320 arranged on the two sides of the seat body 110. The second folding mechanism S210 is configured to adjust an inclination angle of the backrest support assembly 320 on the two sides to provide the child with comfortable sitting (lying) angles as needed. The backrest assembly 300 has a deployed position and a folded position.

[0043] In particular with reference to Fig. 39 and Fig. 40, which show a specific configuration of the second folding mechanism S210 according to an embodiment of the present application. The second folding mechanism S210 mainly includes a control element S211 as the above operating mechanism. The control element S211 is arranged on the backrest assembly 300 of the child carrier. In addition, the second folding mechanism S210 further includes an adjustment element S212 as the above driving mechanism. The adjustment element S212 is arranged at a connection between the backrest assembly 300 and the seat bottom tube S230. The adjustment element S212 is configured to adjust an inclination angle of the backrest assembly 300 relative to the seat assembly 100, and more specifically, to adjust an inclination angle of the backrest assembly 300 relative to the seat bottom tube S230.To realize the control of the control element S211 via the adjustment element S212, a tension element S213 is further arranged between the control element S211 and the adjustment element S212. The control element S211 is connected to the adjustment element S212 by the tension element S213. When the backrest assembly 300 is in the deployed position, the control element S211 is operable to drive the adjustment element S212 to enable the inclination angle of the backrest assembly 300 relative to the seat bottom tube S230 to be adjusted at multiple angles. In addition, the second folding mechanism S210 further includes a return element S214 configured to return the adjustment element S212. Referring again to FIG. Fig. 40 is Fig. 40 is a schematic enlarged exploded view showing another configuration of the second folding mechanism S210. As shown in Fig. 40, the adjustment member S212 further includes a backrest adjustment locking member S2121 and a backrest adjustment locking gear S2122. As shown in Fig. As shown in Figure 40, the backrest adjustment locking member S2121 is provided with a protruding portion. The protruding portion engages with a plurality of teeth on the backrest adjustment locking gear S2122, so that the backrest adjustment locking member S2121 and the backrest adjustment locking gear S2122 fit together to lock the inclination angle of the backrest assembly 300 relative to the seat bottom tube S230 in various positions, thereby meeting various usage requirements.

[0044] The second folding mechanism S210 according to the present application may be of any existing known structure, provided that the backrest assembly 300 can be pivoted relative to the seat bottom tube S230 (ie, relative to the seat assembly 100) to realize pivotal folding between the backrest assembly 300 and the seat bottom tube S230 and various inclined positions of the backrest assembly 300 relative to the seat bottom tube S230.

[0045] The first folding mechanism S110 according to the present application may have the same configuration as the second folding mechanism S210 such that the upper portion S130 of the seat tube and the lower portion S140 of the seat tube are folded relative to each other.

[0046] The second section S200 according to the present application further comprises the folding locking mechanism S260. In the present application, Fig. 41 and Fig. 42 a specific configuration of the folding locking mechanism S260. As in Fig. 41, which is a schematic diagram showing the folding lock mechanism S260 in a locked state, the folding lock mechanism S260 is arranged between the seat bottom tube S230 and the front crossbar S241 of the child carrier (referring to Fig. 31 together). With further reference to Fig. 42 is Fig. 42 is a schematic enlarged view showing a specific configuration of the folding locking mechanism S260 in an unlocked state. In order to clearly show the folding locking mechanism S260, the illustration of a part of the support belt S270 is Fig. 41 and Fig. 42 omitted. As in Fig. 41 and Fig. 42, the folding locking mechanism S260 mainly includes a locking pin S261, a rotating member S262, and a driving member S263. When the child carrier is in a normal use state, the locking pin S261 extends into the connecting portion S250 configured to connect the seat bottom tube S230 and the front crossbar S241, specifically, into a recess S251 disposed in the connecting portion S250. According to another embodiment of the present application, the locking pin S261 extends into the front crossbar S241; for example, it may extend into a recess disposed in the front crossbar S241. The rotating member S262 is connected to the backrest assembly 300 of the child carrier and rotates along with the rotation of the backrest assembly 300. The rotating member S262 is provided with a protrusion S2621.According to one embodiment of the present application, the projection S2621 is arranged radially outward along a circumferential portion of the rotary member S262 and extends approximately 1 / 2 the arc length of the circumferential portion of the rotary member S262. The drive member S263 is arranged between the locking pin S261 and the rotary member S262. The drive member S263 can drive the locking pin S261 to move by means of the rotation of the rotary member S262. According to one embodiment of the present application, the folding locking mechanism further comprises a fixing member S264. The fixing member S264 is arranged between the locking pin S261 and the driving member S263. According to one embodiment of the present application, the fixing member S264 is provided with a fixing member inner groove S2641. Accordingly, the driving member S263 is provided with a driving member inner groove S2631.A first elastic element S265 is arranged in the fixing element inner groove S2641. A third elastic element S267 is arranged in the driving element inner groove S2631. A second elastic element S266 is arranged between the fixing element S264 and the driving element S263. Additionally, according to one embodiment of the present application, one end of the driving element S263 adjacent to the rotating element S262 is provided with a protrusion S2632. The protrusion S2632 is in contact with the protrusion S2621 of the rotating element S262 or the peripheral portion of the rotating element S262.

[0047] Based on the folding lock mechanism S260 of the present application, when the child carrier is in the normal use state, the lock pin S261 is inserted into the recess S251 provided in the connecting portion S250 between the seat bottom tube S230 and the front crossbar S241, or into the groove provided in the front crossbar S241. On the other hand, the projection S2632 of the drive member S263 contacts and abuts against the projection S2621 of the rotary member S262, so that a position of the seat bottom tube S230 can be locked, which prevents accidental folding of the seat bottom tube S230 due to excessive force, improves the safety of using the child carrier, and can also facilitate the child carrier to pass tipping and impact tests.When the backrest assembly 300 is rotated toward the seat bottom tube S230, the rotating member S262 is rotated together with the backrest assembly 300, so that the projection S2632 of the driving member S263 is not in contact with the projection S2621 and comes into contact with the peripheral portion of the rotating member S262. Since the projection S2621 is arranged radially outward along the circumferential direction of the rotating member S262, a height of the projection S2621 is greater than that of the peripheral portion of the rotating member S262. Due to a height difference between the projection S2621 and the peripheral portion of the rotating member S262, the driving member S263 is moved in a direction indicated by an arrow in FIG. Fig. 42. Under the action of the first elastic member S265, the second elastic member S266, and the third elastic member S267, the locking member 261 is separated from the recess S251 of the connecting portion S250, so that the seat of the child carrier can be folded smoothly. Based on the folding locking mechanism S260 as described above, the seat bottom tube S230 can be locked when the child carrier is in the normal use state, that is, a relative position of the seat bottom tube S230 can be locked, which prevents accidental folding of the seat of the child carrier and improves the safety of using the child carrier.

[0048] Since both the first section S100 and the second section S200 of the foldable carrier 10 according to the present application can be folded, a folded size of the child carrier can be smaller. A folding process of the child carrier according to the present application will be described below with reference to Fig. 32 and Fig. 33 described. Fig. 32 is a schematic representation of the backrest assembly 300 of the foldable carrier 10 of the child carrier during the folding process according to the present application, and Fig. 33 is a schematic illustration of the foldable carrier 10 of the child carrier in a fully folded state according to the present application. In the first section S100, the upper seat tube section S130 and the lower seat tube section S140 can be pivotally folded relative to each other by the first folding mechanism S110. In the second section S200, the backrest assembly 300 and the seat bottom tube S230 can also be pivotally folded relative to each other by the second folding mechanism S210. In addition, between the first section S100 and the second section S200, the lower seat tube section S140 and the seat bottom tube S230 can also be pivotally folded relative to each other.When the upper seat tube portion S130 and the lower seat tube portion S140 are fully folded relative to each other, the backrest assembly 300 and the seat bottom tube S230 are fully folded relative to each other, and the lower seat tube portion S140 and the seat bottom tube S230 are fully folded relative to each other, the foldable carrier 10 of the child carrier can finally reach a fully folded state as shown in FIG. Fig. 33. In addition, the pivotal folding between the upper seat tube portion S130 and the lower seat tube portion S140 and / or the pivotal folding between the backrest assembly 300 and the seat bottom tube S230 and / or the pivotal folding between the lower seat tube portion S140 and the seat bottom tube S230 can be selectively performed according to a specific situation and requirement. The inclination angle of the backrest assembly 300 relative to the seat bottom tube S230 can be independently adjusted, which improves the comfort of use. The foldable carrier 10 according to the present application can be fully folded by a simple structure, so the cost is low and the operation is convenient.

[0049] In addition to the pivotal folding between the backrest assembly 300 and the seat bottom tube S230, the inclination angle of the backrest assembly 300 relative to the seat bottom tube S230 can also be adjusted according to a usage requirement. According to one embodiment, the inclination angle of the backrest assembly 300 relative to the seat bottom tube S230 is adjustable in four stages. Two inclination angles of the backrest assembly 300 relative to the seat bottom tube S230 are shown in Fig. 34 and Fig. 35 of the present application. In Fig. 34, an angle formed between the backrest assembly 300 and the seat bottom tube S230 is relatively large, which is suitable for younger babies and can meet their requirement for semi-reclining. In Fig. 35, the angle formed between the backrest assembly 300 and the seat bottom tube S230 is relatively small, which is suitable for older children and can meet their riding needs.

[0050] Several different positions of the foldable carrier 10 according to the present application are further shown in Fig. 36, Fig. 37 and Fig. 38 of the present application. Such figures further show that, based on various angles of inclination of the backrest assembly 300 relative to the seat bottom tube S230, the foldable support 10 of the child carrier is in various positions to accommodate the riding needs of children of different ages. For example, Fig. 36 a position of the foldable carrier 10 suitable for riding requirements of relatively small children, or it is necessary to adjust the backrest assembly 300 to have a more reclined position after relatively older children have fallen asleep in the child carrier. Fig. 37 and Fig. 38 show positions of the foldable carrier 10 suitable for the riding requirements of relatively older children.

[0051] In addition, the seat folding mechanism of the child carrier according to the present application has a simple structure, low cost, and convenient operation. Furthermore, as described above, the position of the backrest assembly 300 can be independently adjusted, improving comfort of use.

[0052] Although the Fig. 1 shown foldable carrier 10 slightly different from that shown in Fig. 30 shown foldable carrier 10 in configuration, it is understood that structural features of the in Fig. 1 shown foldable carrier 10 and the one in Fig. 30 can be combined in any way to obtain a seat assembly with structural features that are not exhaustively illustrated herein. To avoid redundant descriptions, various combinations of the above structural features of the seat assembly will not be described repeatedly herein.

[0053] In various embodiments of the present application, the support frame 20 may be a fixed support frame without wheels on the bottom or a movable support frame with wheels on the bottom, according to different types of child carriers. According to one embodiment of the present application, the support frame 20 is a foldable support frame. Therefore, the support frame 20 has an unfolded state and a folded state. Fig. 43 is another perspective view showing the Fig. 1 shows a schematic view of the child carrier shown. Fig. 44 is a perspective view showing the support frame of the Fig. 43. It should be noted that, unless otherwise specified and defined, the orientation terms "front", "rear", "left", and "right" in the embodiments of the present application are based on the orientation when the child carrier is in a normal use state, that is, the support frame 20 is in the unfolded state, and in the figures, the "front" and "rear" directions are schematically illustrated by arrows F and B, and the "left" and "right" directions are schematically illustrated by arrows L and R. These orientation terms are intended only to clarify the description of the embodiments of the present application and are not intended to unduly limit the scope of the present application.The child carrier and support frame 20 are described below with reference to the accompanying drawings and specific embodiments.

[0054] With reference to Fig. 43 and Fig. 44, the support frame 20 has a substantially bilaterally symmetrical structure, generally comprising two front leg frames 1, two handle frames 2, two support frames 3, two holders 4, two sub-frames 22, etc., arranged in bilateral symmetry. Upper ends of the two handle frames 2 are connected to each other via a handle portion 80. The front leg frame 1, the handle frame 2, and the handle portion 80 constitute the above-mentioned handle member 21.

[0055] With reference to Fig. 44, the two subframes 22 are spaced apart from each other in a left-right direction, and the two subframes 22 may be connected by at least one connecting member arranged transversely. The connecting member includes, for example, a pedal frame 71 connected between front ends of the two subframes 22. The connecting member may further include a crossbar 72 connected between rear ends of the two subframes 22. The wheels 23 include two front wheels 61 and two rear wheels 62. The front wheels 61 may be universal wheels and are respectively mounted on the front ends of the subframes 22. The rear wheels 62 are respectively mounted on the rear ends of the subframes 22. For example, the rear wheels 62 may each be mounted on two ends of the crossbar 72, and a rotational axis of each of the rear wheels 62 may roughly overlap with an axis of the crossbar 72.

[0056] With reference to Fig. 44, the two front leg frames 1 extend obliquely and are spaced from each other in the left-right direction, and a lower end of each of the front leg frames 1 is pivotally connected to the front end of the sub-frame 22 on the corresponding side via a fourth pivot point 94. Therefore, the front wheel 61 is also mounted on the lower end of each of the front leg frames 1. The two handle frames 2 are spaced from each other in the left-right direction. A lower end of each of the handle frames 2 is pivotally connected to an upper end of the front leg frame 1 on the corresponding side via a first pivot point 91. In the unfolded state, the handle frame 2 and the front leg frame 1, which are connected to each other, have, for example, the shape of a straight line.Since the upper ends of the two handle frames 2 are connected to each other via the handle portion 80, a parent can push the child carrier to move by holding the handle portion 80. In some embodiments, a length of each of the handle frames 2 can be adjusted so that a height of the handle portion 80 is adjustable, thereby meeting the usage requirements of parents of different heights.

[0057] With reference to Fig. 44, in some embodiments, the front leg frame 1 and the lower frame 22 on the same side are connected to each other via a corresponding support frame 3. The support frame 3 is configured to support the front leg frame 1 to maintain the front leg frame 1 in an inclined state. Therefore, the support frame 20 may not additionally be provided with a rear leg frame. If the support frame 3 on the left side is taken as an example, the support frame 3 may include an upper bracket 31 and a lower bracket 32 ​​arranged in an up-down direction and pivotally connected to each other. An upper end of the upper bracket 31 is pivotally connected to the upper end of the front leg frame 1 via a second pivot point 92. The second pivot point 92 is farther away from an upper end portion of the front leg frame 1 than the first pivot point 91 (see Fig. 48). In addition, the upper end of the upper bracket 31 is pivotally connected to a front side of the corresponding holder 4 via a third pivot point 93, and the second pivot point 92 is farther away from an upper end portion of the support frame 3 than the third pivot point 93 (see Fig. 45). A lower end of the upper bracket 31 is pivotally connected to an upper end of the lower bracket 32 ​​to enable the support frame 3 itself to be foldable. A lower end of the lower bracket 32 ​​may be pivotally connected to the sub-frame 22 (e.g., a middle portion of the sub-frame 22) via a fifth pivot point 95. Reference may be made to the description of the support frame 3 on the left side as above to understand a configuration of the support frame 3 on the right side and a connection relationship of the support frame 3 on the right side with the front leg frame 1, the bracket 4, and the sub-frame 22 on the right side, and which will not be described again herein.

[0058] With reference to Fig. 44, in this embodiment, lower ends of the upper brackets 31 on the left and right sides may be connected to each other via a first cross arm 3100 to form a U-shaped structure. Upper ends of the lower brackets 32 on the left and right sides may be connected to each other via a second cross arm 3200 to form another U-shaped structure. The first cross arm 3100 is pivotally connected to the second cross arm 3200 so that the upper brackets 31 on the two sides are associated with the lower brackets 32 on the two sides, which is advantageous for improving the consistency of the folding or unfolding operations of the support frames 3 on the left and right sides. The first cross arm 3100 may be pivotally connected to the second cross arm 3200 via any suitable structure.For example, in some embodiments, the second cross arm 3200 is provided with a sleeve structure or an annular sleeve through which the first cross arm 3100 can extend. It should be understood that the configuration of the support frame 3 is not limited to the above description, provided that the upper end of the support frame 3 is pivotally connected to the upper end of the front leg frame 1 via the second pivot point 92 and pivotally connected to the front of the holder 4 via the third pivot point 93.

[0059] The two holders 4 can be movably mounted on the support frame 20 relative to the support frame 20. Each of the two holders 4 is configured to be detachably engaged with the foldable carrier 10 of the child carrier. When the holder 4 on the left side is taken as an example, as described above, the front side of the holder 4 is pivotally connected to the upper end of the upper bracket 31 of the support frame 3 via the third pivot point 93, and a rear side of the holder 4 is in sliding fit with a lower end of the handle frame 2. Therefore, when the support frame 20 is switched between the unfolded state and the folded state, the holder 4 can be switched between an operative position and an inoperative position driven by the support frame.The effective position of the holder 4 corresponds to the unfolded state of the support frame 20 and the ineffective position of the holder 4 corresponds to the folded state of the support frame 20. In some embodiments, with reference to . Fig. 45, the lower end of the handle frame 2 is provided with a connecting pin 25. The connecting pin 25 is further away from a lower end portion of the handle frame 2 relative to the first pivot point 91 (see Fig. 48). The back of the holder 4 is provided with a sliding hole 401. The sliding hole 401 is in sliding engagement with the connecting pin 25. Of course, the sliding engagement relationship between the holder 4 and the handle frame 2 may alternatively be realized by other suitable structures. For example, in some alternative embodiments, the holder 4 and the handle frame 2 may be in sliding engagement through a sliding rail and a sliding groove. Reference can be made to the description of the holder 4 on the left side as above to understand a configuration of the holder 4 on the right side and a connection relationship of the holder 4 on the right side with the support frame 3 and the handle frame 2 on the right side, and which will not be described again herein.

[0060] With reference to Fig. 44 to Fig. 46, the sliding hole 401 includes an upper end 4011 and a lower end 4012 opposite the upper end 4011. When the support frame 20 is in the deployed state, the connecting pin 25 abuts against an end wall of the upper end 4011 of the sliding hole 401, and the front of the holder 4 is supported by the upper end of the support frame 3. After the foldable support 10 is engaged with the holder 4, the foldable support 10, under the action of gravity, tends to drive the rear of the holder 4 to pivot the third pivot point 93 downward. Since the connecting pin 25 abuts against the end wall of the upper end 4011 of the sliding hole 401, so that the rear side of the holder 4 is not allowed to pivot downward about the third pivot point 93, the holder 4 is stably held in the effective position and can thus form a reliable support for the foldable carrier 10. It should be noted that in Fig. 46, a straight line indicated by reference numeral 1 corresponds to a portion of the front leg frame 1 located between the first pivot point 91 and the second pivot point 92, and a straight line indicated by reference numeral 2 corresponds to a portion of the handle frame 2 located between the first pivot point 91 and the connecting pin 25. In practical application, with reference to Fig. 44, when the support frame 20 is in the unfolded state, the front leg frame 1 and the handle frame 2 are designed to lie on a straight line. It is understood that in Fig. 46, a straight line indicated by reference numeral 3 corresponds to a portion of the support frame 3 disposed between the second pivot point 92 and the third pivot point 93, and a straight line indicated by reference numeral 4 corresponds to a portion of the holder 4 disposed between the third pivot point 93 and the sliding hole 401.

[0061] When it is necessary to store the child carrier, the foldable carrier 10 can be removed from the holder 4, and then the carrier frame 20 is folded. Referring to Fig. 47 and Fig. 48, when the support frame 20 is folded, a pivot joint between the upper bracket 31 and the lower bracket 32 ​​of the support frame 3 (a connection of the first cross member 3100 and the second cross member 3200 in this embodiment) can be pushed rearward, so that the upper bracket 31 and the lower bracket 32 ​​approach each other, so that the support frame 3 itself is folded, the front leg frame 1 is rotated rearward and downward about the fourth pivot point 94 to approach the lower frame 22, and the handle frame 2 is rotated forward and downward about the first pivot point 91 to approach the front leg frame 1. When the front leg frame 1, the handle frame 2 and the support frame 3 of the support frame 20 perform the above folding operations, the support frame 20 drives the holder 4 to move by means of the connecting pin 25 and the third pivot point 93, so that the holder 4 is released from the Fig. 44 shown effective position into the Fig. 49. More specifically, the connecting pin 25 is pushed into the sliding hole 401 so as not to interfere with the folding operations of the front leg frame 1, the handle frame 2, and the support frame 3. When the connecting pin 25 is pushed to the lower end 4012 in the sliding hole 401, the connecting pin 25 can push the lower end 4012 downward until the support frame 20 is completely folded. Referring to Fig. 49 and Fig. 50, after the support frame 20 has reached the folded state, the connecting pin 25 is located at the lower end of the sliding hole 401. In addition, as shown Fig. As can be seen from Fig. 49, when the support frame 20 is in the folded state, the rear side of the holder 4 is raised relative to the front side thereof. Thus, the rear side of the holder 4 does not prevent the lower bracket 32 ​​and the front leg frame 1 from approaching each other, which contributes to reducing the packaging volume of the entire support frame 20 after folding.

[0062] When the support frame 20 is returned to the Fig. 44, the handle frame 2 is rotated backward and upward about the first pivot point 91, the front leg frame 1 is rotated forward and upward about the fourth pivot point 94, the pivot joint between the upper bracket 31 and the lower bracket 32 ​​is moved forward to unfold the support frame 3, and the connecting pin 25 is pushed into the sliding hole 401 so as not to hinder the unfolding operations of the front leg frame 1, the handle frame 2, and the support frame 3. When the front leg frame 1, the handle frame 2, and the support frame 3 of the support frame 20 perform the above folding operations, the support frame 20 drives the holder 4 to move by means of the connecting pin 25 and the third pivot point 93, so that the holder 4 is released from the position shown in Fig. 49 shown ineffective position into the Fig. 44 shown effective position is switched.

[0063] The implementations of the support frame 20 according to the embodiments of the present application and the connection relationship between the support frame 20 and the holder 4 are not limited to the above description. By rationally designing the connection relationship between various components of the support frame 20 and the connection relationship between the components of the support frame 20 and the holder 4, when the support frame 20 is subjected to an external force and is unfolded from the folded state, there is no need to manually operate the holder 4, and the support frame 20 directly drives the holder 4 to perform adaptive rotation, so that the holder 4 also reaches the effective position capable of reliably supporting the foldable carrier 10 when the support frame 20 reaches the unfolded state.Likewise, when the support frame 20 is subjected to an external force and folded from the deployed state, there is no need to manually operate the holder 4, and the support frame 20 directly drives the holder 4 to perform adaptive rotation, so that the holder 4 also reaches the inoperative position when the support frame 20 reaches the folded state. The support frame 20 according to the embodiments of the present application does not need to be additionally provided with a locking mechanism configured to hold the holder 4 in the operative position. When the support frame 20 changes its posture, there is no need to manually adjust the position of the holder 4, which is advantageous for a compact structure and reduced cost of the support frame 20 on the one hand, and on the other hand, improves the convenience of operating the support frame 20.

[0064] With reference to Fig. 45 and Fig. 46, the sliding hole 401 in this embodiment has the shape of an arc. In some embodiments, the connecting pin 25 is centrally provided with a threaded hole 2100, and a bolt (not shown in the figure) is inserted into the threaded hole 2100 to fix relative positions of the handle frame 2 and the holder 4 in the left-right direction. In some alternative embodiments, a lowering platform (not shown in the figure) may be arranged in the sliding hole 401, and a head of a bolt may be embedded in the lowering platform. Additionally, with reference to Fig. 47, a cover plate 402 may be arranged on the holder 4. The cover plate 402 covers the sliding hole 401 on a side of the holder 4 facing away from the handle frame 2 to prevent dirt from entering the sliding hole 401 and impairing the sliding of the connecting pin 25. A side of the sliding hole 401 facing the handle frame 2 may be directly covered by the handle frame 2.

[0065] With further reference to Fig. 45, the front of the holder 4 may be provided with a first engagement structure 41, and the upper end of the support frame 3 is provided with a second engagement structure 34. When the carrier frame 20 is in the unfolded state, the first engagement structure 41 abuts the second engagement structure 34 to limit upward pivoting of the rear of the holder 4 about the third pivot point 93. In this way, it is more helpful to keep the holder 4 stable in the operative position and can prevent the foldable carrier 10 and the holder 4 from tipping forward when the child carrier suddenly brakes in an emergency. The first engagement structure 41 and the second engagement structure 34 may be a first step and a second step that fit together, or a first projection and a first recess that fit together, or any other suitable structure.In this embodiment, the front of the holder 4 is further provided with a receiving portion 403. The receiving portion 403 includes a lower opening 4030. The upper end of the upper bracket 31 of the support frame 3 extends into the receiving portion 403 via the lower opening 4030, and the third pivot point 93 can be supported by a side wall of the receiving portion 403. The second engagement structure 34 is arranged near the upper end of the support frame 3. When the support frame 20 is in the unfolded state, the second engagement structure 34 is arranged in the receiving portion 403. Accordingly, the first engagement structure 41 is arranged in the receiving portion 403. It should be understood that when the support frame 20 is folded, the first engagement structure 41 and the second engagement structure 34 cannot hinder the relative rotation between the holder 4 and the support frame 3.

[0066] With further reference to Fig. 45, a third engagement structure 43 is further arranged on the underside of the holder 4. The third engagement structure 43 is arranged between the sliding hole 401 and the third pivot point 93. Furthermore, a fourth engagement structure 24 is arranged on the handle frame 2. When the support frame 20 is in the unfolded state, the fourth engagement structure 24 abuts against the third engagement structure 43. The third engagement structure 43, which abuts against the fourth engagement structure 24, provides auxiliary support for a central portion of the holder 4. In this embodiment, the third engagement structure 43 is an engagement groove, and the fourth engagement structure 24 is a post that extends laterally from the handle frame 2 to the holder 4. Of course, the configurations of the third engagement structure 43 and the fourth engagement structure 24 are not limited to the above description.It should be understood that when the support frame 20 is folded, the third engagement structure 43 and the fourth engagement structure 24 may not impede the relative movement between the holder 4 and the handle frame 2. Referring to FIG. Fig. 48, the first pivot point 91 is arranged, for example, between the post and the connecting pin 25.

[0067] It should be noted that the support frame 20 according to the embodiments of the present application is not limited to the above description, and the support frame 20 can be modified, for example, as follows.

[0068] 1. In some alternative embodiments, the position of the connecting pin 25 and the position of the sliding hole 401 may be interchanged. That is, the connecting pin 25 may be located on the back of the holder 4, and the sliding hole 401 may be located at the lower end of the handle frame 2.

[0069] 2. In some alternative embodiments, an angle limiting device may be arranged between the first cross arm 3100 and the second cross arm 3200 to limit pivot angles of the first cross arm 3100 and the second cross arm 3200 to help keep the upper bracket 31 and the lower bracket 32 ​​on the same side in the unfolded state, as in Fig.44, so that the front leg frames 1 on the two sides are respectively reliably supported by the support frames 3 on the corresponding sides. Specifically, when the first cross arm 3100 and the second cross arm 3200 are rotated relative to each other to allow the upper bracket 31 and the lower bracket 32 ​​to be deployed in place, the angle limiting device limits a relative rotational position of the first cross arm 3100 and the second cross arm 3200, thereby maintaining the upper bracket 31 and the lower bracket 32 ​​on the same side in the deployed state.

[0070] 3. In some alternative embodiments, the upper bracket 31 and the lower bracket 32 ​​on the left and right sides may not be associated with each other, provided that the upper bracket 31 and the lower bracket 32 ​​on the same side are pivotally connected to each other to allow the support frame 3 to be unfolded or folded. In some other alternative embodiments, the support frame 3 on the same side is not limited to comprising the upper bracket 31 and the lower bracket 32 ​​as described above, which may, for example, comprise a plurality of brackets pivotally connected one after the other in the up-down direction. These brackets can be unfolded or folded, which corresponds to the unfolding or folding of the support frame 3 itself.

[0071] 4. In some alternative embodiments, the support frame 20 may not be provided with the subframe 22, the front wheel 61 is connected to the lower end of the front leg frame 1, and the support frame 3 may be used, for example, as a rear leg frame and is connected to the rear wheel 62. To ensure the structural strength of the rear leg frame, the support frame 3 itself may not be folded, for example. When it is necessary to fold the support frame 20, the support frame 3 can be rotated about the second pivot point 92 to approach the front leg frame 1.

[0072] According to a first aspect of the present application, a foldable carrier comprises: a seat assembly; an armrest assembly pivotable relative to the seat assembly and movable between a folded position and a deployed position, the armrest assembly being provided with a locking portion; a backrest assembly having a folded position and an unfolded position; a link assembly movably connected to the backrest assembly; and a locking member, one end of the locking member being pivotally connected to the link assembly, the other end of the locking member being capable of being fitted with the locking portion, wherein the backrest assembly is folded in a direction approaching the armrest assembly to drive the locking member to be separated from the locking portion by the link assembly.

[0073] In the above foldable carrier, the armrest assembly can be pivoted relative to the seat assembly and moved between a folded position and an unfolded position, and the backrest assembly also has the folded position and the unfolded position. When the foldable carrier is unfolded, the locking member is fitted into the locking portion to lock the armrest assembly in the unfolded position.When it is necessary to fold the foldable carrier, only the backrest assembly needs to be folded in a direction approaching the armrest assembly, and the locking member pivotally connected to the link assembly can be driven by the link assembly to be separated from the locking portion, thereby releasing the armrest assembly, so that the armrest assembly can be folded together with the backrest assembly in a linked manner. In this way, the foldable carrier can realize linked folding of the armrest assembly together with the backrest assembly through a simple structure, which is convenient in use.

[0074] In one embodiment of the present application, the connection assembly comprises a drive element and a connecting element. One end of the connecting element is pivotally connected to the locking element, and the other end of the connecting element is slidably connected to the drive element. The drive element is pivotally connected to the backrest assembly.

[0075] In one embodiment of the present application, the drive element is provided with a drive groove arranged in a longitudinal direction of the drive element, and the other end of the connecting element is provided with a connecting post. The connecting post is inserted into the drive groove and is movable in the drive groove.

[0076] In one embodiment of the present application, the connecting assembly further comprises a first return element. The first return element is arranged in the drive groove. Two ends of the first return element each abut the connecting post and an inner wall of the drive groove.

[0077] In one embodiment of the present application, the backrest assembly includes a fixing element. The fixing element is pivotally connected to the seat assembly at a first pivot point, and the drive element is pivotally connected to the fixing element at a second pivot point. The second pivot point is offset from the first pivot point.

[0078] In one embodiment of the present application, the connection arrangement further comprises a drive pin arranged on the drive element, and the drive element is pivotally connected to the fixing element by the drive pin.

[0079] In one embodiment of the present application, the seat assembly includes a side panel. The fixing element is pivotally connected to the side panel at the first pivot point. The connecting assembly and the locking element are arranged on a side of the side panel facing away from the fixing element. The side panel is provided with a guide groove. The drive pin extends through the guide groove to be pivotally connected to the fixing element at the second pivot point. The guide groove has a first position and a second position. The drive pin moves to the first position when the backrest assembly is in the folded position, and the drive pin moves to the second position when the backrest assembly is in the deployed position.

[0080] In one embodiment of the present application, the guide groove is an arc groove that is bent around the first pivot point.

[0081] In one embodiment of the present application, the seat assembly further comprises a side cover. The side cover covers a side of the side panel facing away from the fixing element to form a receiving space. The connecting assembly and the locking element are arranged in the receiving space.

[0082] In one embodiment of the present application, the armrest assembly includes an armrest support rod. The locking portion is a locking groove formed on the armrest support rod, and the locking element is a locking pin.

[0083] In one embodiment of the present application, the armrest support rod is pivotally connected to the seat assembly at a third pivot point. A first circle tangent to a bottom wall of the locking groove is drawn with the third pivot point as a center, and when the armrest assembly moves to the deployed position, the locking pin is capable of being inserted into the locking groove in a radial direction of the first circle.

[0084] In one embodiment of the present application, the foldable carrier further comprises a second return element. Two ends of the second return element are respectively attached to the seat assembly and the armrest assembly. The second return element constantly allows the armrest assembly to move toward the deployed position.

[0085] In one embodiment of the present application, the backrest assembly further comprises an angle adjustment mechanism. The angle adjustment mechanism is configured to adjust an angle of the backrest assembly relative to the seat assembly.

[0086] In one embodiment of the present application, the angle adjustment mechanism comprises an angle adjustment locking element. The angle adjustment locking element is movably mounted on the backrest assembly. The seat assembly is provided with a plurality of locking holes. The angle adjustment locking element is capable of being fitted into one of the locking holes and locked, so that the backrest assembly is secured at various angles relative to the seat assembly.

[0087] In one embodiment of the present application, the angle adjustment locking element has a first drive position and a second drive position. When the angle adjustment locking element is in the first drive position, the angle adjustment locking element is inserted into one of the locking holes, and the backrest assembly is secured relative to the seat assembly. When the angle adjustment locking element is in the second drive position, the angle adjustment locking element is retracted from one of the locking holes, and the backrest assembly is rotatable relative to the seat assembly.

[0088] In one embodiment of the present application, the angle adjustment mechanism further comprises an angle adjustment reset element. The angle adjustment reset element constantly allows the angle adjustment locking element to move toward the first drive position.

[0089] In one embodiment of the present application, the angle adjustment mechanism further comprises an actuating assembly and a driving assembly. The actuating assembly is operable to drive the angle adjustment locking element, via the driving assembly, to move toward the second driving position.

[0090] In one embodiment of the present application, the drive assembly comprises a rod member and a drive pin. The rod member is provided with a drive slope, the drive pin is attached to the angle adjustment locking member, and the drive pin abuts the drive slope. When the drive assembly is actuated, the rod member is movable and drives the drive pin to move according to the drive slope, and drives the angle adjustment locking member through the drive pin to move toward the second drive position.

[0091] In one embodiment of the present application, the actuating assembly comprises an actuating handle, a pull-return member, a connecting member, and a pull member. Two ends of the pull member are respectively connected to the connecting member and the rod member. The pull-return member is disposed between the actuating handle and the connecting member. The actuating handle is operable to drive the connecting member to move via the pull-return member and to pull the pull member via the connecting member. The pull-return member constantly allows the actuating handle to move in a direction opposite to a direction in which the actuating handle is operated.

[0092] In one embodiment of the present application, the seat assembly comprises a seat body and a side panel. The armrest assembly includes an armrest support rod pivotable relative to the seat assembly. The backrest assembly includes a backrest support assembly movably connected to the connecting assembly. Two opposite sides of the seat body are each provided with the side panel, the armrest support rod, the backrest support assembly, the connecting assembly, and the locking element. On each of the two opposite sides of the seat body, the backrest support assembly is pivotally connected to the side panel.

[0093] According to a second aspect of the present application, a child carrier comprises a support frame and the foldable carrier according to any one of the above embodiments.

[0094] In one embodiment of the present application, the child carrying device is a stroller, a car seat, a rocker, a pushchair, a high chair or a child's chair.

[0095] According to a third aspect of the present application, a foldable carrier comprises: a seat tube; seat bottom tubes; a backrest assembly pivotally connected to end portions of the seat bottom tubes; and a front crossbar disposed between the seat bottom tubes at an end remote from the backrest assembly, the foldable carrier further comprising a folding lock mechanism. The folding lock mechanism is disposed between the seat bottom tubes and the front crossbar. When the folding lock mechanism is in a locked state, the seat tube and the seat bottom tubes are locked in a deployed state. When the folding lock mechanism is in an unlocked state, the seat tube and the seat bottom tubes are pivotable relative to each other.

[0096] In one embodiment of the present application, the folding locking mechanism comprises: a locking pin, wherein the locking pin extends into a recess disposed in a connecting portion connecting the seat bottom tubes and the front crossbar when the foldable carrier is in a normal use state; a rotating member connected to the backrest assembly of the foldable carrier and rotating along with the rotation of the backrest assembly, wherein the rotating member is provided with a protrusion; and a driving member disposed between the locking pin and the rotating member, and wherein the driving member is capable of driving the locking pin to move by means of the rotation of the rotating member.

[0097] In one embodiment of the present application, the folding locking mechanism further comprises a fixing element. The fixing element is arranged between the locking pin and the drive element.

[0098] In one embodiment of the present application, the fixing element is provided with a fixing element inner groove, and the driving element is provided with a driving element inner groove. A first elastic element is arranged in the fixing element inner groove, a third elastic element is arranged in the driving element inner groove, and a second elastic element is arranged between the fixing element and the driving element.

[0099] In one embodiment of the present application, the projection is arranged radially outwardly along a circumferential portion of the rotary member and extends approximately 1 / 2 of an arc length of the circumferential portion of the rotary member.

[0100] In one embodiment of the present application, one end of the drive element adjacent to the rotary element is provided with a projection. The projection is in contact with the projection or the peripheral portion of the rotary element.

[0101] In one embodiment of the present application, the locking pin extends into a recess disposed in the front crossbar when the foldable carrier is in the normal use state.

[0102] In one embodiment of the present application, the foldable carrier further comprises a rear crossbar. The rear crossbar is disposed between the seat bottom tubes at one end adjacent to the backrest assembly.

[0103] In one embodiment of the present application, the seat tube comprises an upper seat tube portion and a lower seat tube portion. The upper seat tube portion is connected to the lower seat tube portion by a pivot base. The lower seat tube portion is pivotally connected to the seat bottom tubes. When the folding lock mechanism is in the locked state, the lower seat tube portion and the seat bottom tubes are locked in the unfolded state. When the folding lock mechanism is in the unlocked state, the lower seat tube portion and the seat bottom tubes are pivotable relative to each other.

[0104] According to a fourth aspect of the present application, a child carrier comprises a foldable carrier, a support frame, and a bracket configured to connect the foldable carrier and the support frame, the foldable carrier comprising: a first portion including a seat tube; and a second portion disposed below the first portion and including a backrest assembly, seat bottom tubes, a front crossbar, and a second folding mechanism. The backrest assembly is pivotally connected to one end of each of the seat bottom tubes. The front crossbar is disposed between the seat bottom tubes at an end remote from the backrest assembly. The second folding mechanism is disposed on the backrest assembly and configured to adjust an inclination angle of the backrest assembly relative to each of the seat bottom tubes.The second section further includes the folding locking mechanism of the foldable carrier as described above.

[0105] In one embodiment of the present application, the seat tube comprises an upper seat tube section and a lower seat tube section. The upper seat tube section and the lower seat tube section are pivotally connected to each other by a pivot base.

[0106] In one embodiment of the present application, the second folding mechanism allows the angle of inclination of the backrest assembly relative to each of the seat bottom tubes to be adjusted in four stages.

[0107] In one embodiment of the present application, the second folding mechanism comprises: a control element arranged on the backrest assembly; an adjustment element arranged at a connection between the backrest assembly and each of the seat bottom tubes and configured to adjust the inclination angle of the backrest assembly relative to each of the seat bottom tubes; a tension element arranged between the control element and the adjustment element to connect the control element and the adjustment element; and a return element configured to return the adjustment element.

[0108] In one embodiment of the present application, the adjustment member comprises: a backrest adjustment locking member; and a backrest adjustment locking gear engaged with the backrest adjustment locking member to lock the recline angle of the backrest assembly relative to the seat bottom tubes in various positions.

[0109] In one embodiment of the present application, the child carrier further comprises a support belt. The support belt is attached between the seat base tubes and the holder of the child carrier to support the foldable carrier.

[0110] In one embodiment of the present application, the seat base tubes and the lower seat tube section are pivotally connected to each other.

[0111] In one embodiment of the present application, the support frame comprises a handle element, a subframe, and wheels. The handle element extends obliquely upward and rearward from the wheels.

[0112] In one embodiment of the present application, the seat tube comprises an upper seat tube portion and a lower seat tube portion pivotally connected to the upper seat tube portion. The first portion further comprises a first folding mechanism. The first folding mechanism is arranged on the upper seat tube portion and configured to allow the upper seat tube portion and the lower seat tube portion to pivot relative to each other.

[0113] According to a fifth aspect of the present application, a support frame of a child carrier is provided. A holder is mounted on the support frame, the holder being configured to be engaged with a foldable support of the child carrier. The support frame has an unfolded state and a folded state. The holder has an operative position corresponding to the unfolded state and an inoperative position corresponding to the folded state. When the support frame is switched between the unfolded state and the folded state, the support frame drives the holder to switch between the operative position and the inoperative position.

[0114] In one embodiment of the present application, the support frame comprises: a front leg frame; a handle frame pivotally connected to the front leg frame via a first pivot point; and a support frame configured to support the front leg frame, wherein the support frame is pivotally connected to the front leg frame via a second pivot point. The holder is pivotally connected to the support frame via a third pivot point. The handle frame is a sliding fit with the holder.

[0115] In one embodiment of the present application, the first pivot point is near an upper end portion of the front leg frame, and the second pivot point is farther from the upper end portion of the front leg frame than the first pivot point. And / or the third pivot point is near an upper end portion of the support frame, and the second pivot point is farther from the upper end portion of the support frame than the third pivot point.

[0116] In one embodiment of the present application, one of the handle frame and the holder is provided with a connecting pin, and the other of the handle frame and the holder is provided with a sliding hole. The connecting pin is in sliding engagement with the sliding hole.

[0117] In one embodiment of the present application, the connecting pin is arranged on the handle frame, and the connecting pin is farther from a lower end portion of the handle frame than the first pivot point; and the sliding hole is arranged on the holder.

[0118] In one embodiment of the present application, the sliding hole includes an upper end and a lower end opposite the upper end. When the support frame is in the unfolded state, the connecting pin abuts an end wall of the upper end of the sliding hole to limit downward pivoting of the holder about the third pivot point. When the support frame is in the folded state, the connecting pin moves to a lower end of the sliding hole.

[0119] In one embodiment of the present application, the sliding hole has the shape of an arc. And / or a cover plate is arranged on the holder. The cover plate covers the sliding hole on a side of the holder facing away from the handle frame.

[0120] In one embodiment of the present application, the holder is provided with a first engagement structure, and the support frame is provided with a second engagement structure. When the support frame is in the deployed state, the first engagement structure abuts the second engagement structure to limit upward pivoting of the holder about the third pivot point.

[0121] In one embodiment of the present application, the first engagement structure and the second engagement structure are a first step and a second step that are fitted to each other, or a first projection and a first recess that are fitted to each other.

[0122] In one embodiment of the present application, the holder is provided with a receiving portion. The receiving portion includes a lower opening. The support frame extends over the lower opening into the receiving portion. The third pivot point is supported by a side wall of the receiving portion. The first engagement structure is arranged in the receiving portion.

[0123] In one embodiment of the present application, a third engagement structure is arranged on the underside of the holder. The third engagement structure is arranged between the sliding hole and the third pivot point. The handle frame is provided with a fourth engagement structure. When the support frame is in the deployed state, the fourth engagement structure abuts the third engagement structure.

[0124] In one embodiment of the present application, the third engagement structure is an engagement groove and the fourth engagement structure is a post.

[0125] In one embodiment of the present application, the support frame further comprises a subframe. A front end of the subframe is pivotally connected to a lower end of the front leg frame via a fourth pivot point. The support frame is foldable, and a lower end of the support frame is pivotally connected to the subframe via a fifth pivot point.

[0126] In one embodiment of the present application, the support frame includes an upper bracket and a lower bracket arranged in an up-down direction and pivotally connected to each other. The upper bracket is pivotally connected to the front leg frame via the second pivot point and pivotally connected to the holder via the third pivot point. The lower bracket is pivotally connected to the lower frame via the fifth pivot point. When the support frame is folded, a pivot joint between the upper bracket and the lower bracket is moved rearward so that the upper bracket and the lower bracket approach each other, the handle frame is rotated forward and downward to approach the front leg frame, and the front leg frame is rotated rearward and downward to approach the lower frame.

[0127] In one embodiment of the present application, a pair of front leg frames, a pair of handle frames, a pair of upper brackets, a pair of lower brackets, a pair of holders, and a pair of lower frames are provided and arranged on the left and right sides of the support frame. Lower ends of the upper brackets on the left and right sides are connected by a first cross arm, and upper ends of the lower brackets on the left and right sides are connected by a second cross arm. The first cross arm is pivotally connected to the second cross arm.

[0128] According to a sixth aspect of the present application, a child carrier comprises a foldable carrier and the carrier frame according to any one of the above embodiments of the aspects.

[0129] In the child carrier according to the sixth aspect of the present application, the foldable carrier may be the foldable carrier according to any one of the above embodiments of the aspects.

[0130] The technical features in the above embodiments can be combined arbitrarily. For the sake of conciseness, not all possible combinations of the technical features in the above embodiments are described. However, all combinations of the technical features are considered to fall within the scope described in this description, provided they do not conflict with each other.

[0131] The above embodiments describe only several implementations of the present application, and their description is specific and detailed, but should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art may further make variations and improvements without departing from the concept of the present application, all of which fall within the scope of the present application. Therefore, the scope of the present application should be governed by the appended claims.

Claims

[1] Foldable carrier comprising: a seating arrangement; an armrest assembly pivotable relative to the seat assembly and movable between a folded position and a deployed position, the armrest assembly being provided with a locking portion; a backrest assembly having a folded position and a deployed position; a connecting assembly movably connected to the backrest assembly; and a locking member, one end of the locking member being pivotally connected to the link assembly, the other end of the locking member being capable of being fitted into the locking portion, the backrest assembly being folded in a direction approaching the armrest assembly to drive the locking member to be separated from the locking portion through the link assembly. [2] The foldable carrier of claim 1, wherein the linkage assembly comprises a drive member and a link member, one end of the link member being pivotally connected to the locking member, the other end of the link member being slidably connected to the drive member, and the drive member being pivotally connected to the backrest assembly. [3] A foldable carrier according to claim 2, wherein the drive member is provided with a drive groove arranged in a longitudinal direction of the drive member, and the other end of the connecting member is provided with a connecting post, and wherein the connecting post is inserted into the drive groove and movable in the drive groove. [4] A foldable carrier according to claim 3, wherein the connecting arrangement further comprises a first return element arranged in the drive groove, and wherein two ends of the first return element respectively abut against the connecting post and an inner wall of the drive groove. [5] A foldable carrier according to any one of claims 2 to 4, wherein the backrest assembly comprises a fixing member, and wherein the fixing member is pivotally connected to the seat assembly at a first pivot point and the drive member is pivotally connected to the fixing member at a second pivot point, the second pivot point being offset from the first pivot point. [6] A foldable carrier according to claim 5, wherein the connecting arrangement further comprises a drive pin arranged on the drive member, and the drive member is pivotally connected to the fixing member by the drive pin. [7] A foldable carrier according to claim 5 or 6, wherein the seat assembly comprises a side plate, the fixing member is pivotally connected to the side plate at the first pivot point, the connecting assembly and the locking member are arranged on a side of the side plate facing away from the fixing member, the side plate is provided with a guide groove, and the drive pin extends through the guide groove to be pivotally connected to the fixing member at the second pivot point; and wherein the guide groove has a first position and a second position, the drive pin moving to the first position when the backrest assembly is in the folded position, and the drive pin moving to the second position when the backrest assembly is in the deployed position. [8] A foldable carrier according to claim 7, wherein the guide groove is an arc groove bent around the first pivot point. [9] A foldable carrier according to claim 7 or 8, wherein the seat assembly further comprises a side cover, and wherein the side cover covers a side of the side plate facing away from the fixing member to form a receiving space, and wherein the connecting assembly and the locking member are arranged in the receiving space. [10] A foldable carrier according to any one of the preceding claims, wherein the armrest assembly comprises an armrest support bar, the locking portion is a locking groove formed on the armrest support bar, and the locking member is a locking pin. [11] A foldable carrier according to claim 10, wherein the armrest support rod is pivotally connected to the seat assembly at a third pivot point, a first circle tangent to a bottom wall of the locking groove is drawn with the third pivot point as a center, and when the armrest assembly moves to the deployed position, the locking pin is capable of being inserted into the locking groove in a radial direction of the first circle. [12] A foldable carrier according to any one of claims 1 to 11, further comprising a second return member, and wherein two ends of the second return member are respectively fixed to the seat assembly and the armrest assembly, and the second return member constantly allows the armrest assembly to move toward the deployed position. [13] The foldable carrier of any one of claims 1 to 12, wherein the backrest assembly further comprises an angle adjustment mechanism configured to adjust an angle of the backrest assembly relative to the seat assembly. [14] A foldable carrier according to claim 13, wherein the angle adjustment mechanism comprises an angle adjustment locking member, wherein the angle adjustment locking member is movably disposed on the backrest assembly, and wherein the seat assembly is provided with a plurality of locking holes, wherein the angle adjustment locking member is capable of being fitted into one of the locking holes and locked so that the backrest assembly is fixed at various angles relative to the seat assembly. [15] The foldable carrier of claim 14, wherein the angle adjustment locking member has a first drive position and a second drive position, and wherein, when the angle adjustment locking member is in the first drive position, the angle adjustment locking member is inserted into one of the locking holes and the backrest assembly is fixed relative to the seat assembly; and when the angle adjustment locking member is in the second drive position, the angle adjustment locking member is retracted from the one of the locking holes and the backrest assembly is rotatable relative to the seat assembly. [16] A foldable carrier according to claim 14 or 15, wherein the angle adjustment mechanism further comprises an angle adjustment reset member, and wherein the angle adjustment reset member constantly allows the angle adjustment locking member to move toward the first drive position. [17] A foldable carrier according to any one of claims 14 to 16, wherein the angle adjustment mechanism further comprises an actuating assembly and a driving assembly, and wherein the actuating assembly is operable to drive, through the driving assembly, the angle adjustment locking member to move toward the second driving position. [18] A foldable carrier according to claim 17, wherein the drive assembly comprises a rod member and a drive pin, and wherein the rod member is provided with a drive slope, the drive pin is fixed to the angle adjustment locking member, and the drive pin abuts the drive slope; wherein, when the drive assembly is actuated, the rod member is movable and drives the drive pin to move according to the drive slope and drives the angle adjustment locking member by the drive pin to move toward the second drive position. [19] A foldable carrier according to claim 18, wherein the operating assembly comprises an operating handle, a pull-return member, a connecting member, and a pulling member, and wherein two ends of the pulling member are respectively connected to the connecting member and the rod member, the pull-return member is disposed between the operating handle and the connecting member, the operating handle is operable to drive the connecting member via the connecting member to move and pull the pulling member via the connecting member, and the pull-return member constantly allows the operating handle to move in a direction opposite to a direction in which the operating handle is operated. [20] Foldable carrier according to one of the preceding claims, wherein the seat assembly comprises a seat body and a side panel; the armrest assembly includes an armrest support bar pivotable relative to the seat assembly; and the backrest assembly includes a backrest support assembly movably connected to the connecting assembly; wherein two opposite sides of the seat body are each provided with the side plate, the armrest support rod, the backrest support assembly, the connecting assembly and the locking element, and on each of the two opposite sides of the seat body, the backrest support assembly is pivotally connected to the side plate. [21] Child carrier, comprising: a support frame; and the foldable carrier according to one of claims 1 to 20. [22] A child carrying device according to claim 21, wherein the child carrying device is a stroller, a car seat, a rocker, a pushchair, a high chair or a child's dining chair. [23] Foldable carrier comprising: a seat tube; seat base tubes; a backrest assembly pivotally connected to end portions of the seat base tubes; and a front crossbar arranged between the seat base tubes at an end remote from the backrest assembly, wherein the foldable carrier further comprises a folding lock mechanism disposed between the seat bottom tubes and the front crossbar, wherein, when the folding lock mechanism is in a locked state, the seat tube and the seat bottom tubes are locked in a deployed state, and when the folding lock mechanism is in an unlocked state, the seat tube and the seat bottom tubes are pivotable relative to each other. [24] A foldable carrier according to claim 23, wherein the folding locking mechanism comprises: a locking pin, the locking pin extending into a recess disposed in a connecting portion connecting the seat bottom tubes and the front crossbar when the foldable carrier is in a normal use state; a rotating member connected to the backrest assembly of the foldable carrier and rotating along with the rotation of the backrest assembly, the rotating member being provided with a projection; and a drive member disposed between the locking pin and the rotating member, and wherein the drive member is capable of driving the locking pin to move by means of rotation of the rotating member. [25] The foldable carrier of claim 24, wherein the folding locking mechanism further comprises a fixing member disposed between the locking pin and the drive member. [26] A foldable carrier according to claim 25, wherein the fixing element is provided with a fixing element inner groove, the driving element is provided with a driving element inner groove, a first elastic element is arranged in the fixing element inner groove, a third elastic element is arranged in the driving element inner groove and a second elastic element is arranged between the fixing element and the driving element. [27] A foldable carrier according to any one of claims 24 to 26, wherein the projection is arranged radially outwardly along a peripheral portion of the rotary member and extends approximately over 1 / 2 of an arc length of the peripheral portion of the rotary member. [28] A foldable carrier according to any one of claims 24 to 27, wherein one end of the drive member adjacent to the rotary member is provided with a projection which is in contact with the projection or the peripheral portion of the rotary member. [29] A foldable carrier according to any one of claims 24 to 28, wherein the locking pin extends into a recess arranged in the front crossbar when the foldable carrier is in the normal use condition. [30] A foldable carrier according to any one of claims 23 to 29, further comprising a rear crossbar, and wherein the rear crossbar is disposed between the seat bottom tubes at one end adjacent the backrest assembly. [31] A foldable carrier according to any one of claims 23 to 30, wherein the seat tube comprises an upper seat tube portion and a lower seat tube portion, and wherein the upper seat tube portion is connected to the lower seat tube portion by a pivot base, the lower seat tube portion is pivotally connected to the seat bottom tubes; wherein, when the folding lock mechanism is in the locked state, the lower seat tube portion and the seat bottom tubes are locked in the deployed state; and when the folding lock mechanism is in the unlocked state, the lower seat tube portion and the seat bottom tubes are pivotable relative to each other. [32] A child carrier comprising a foldable carrier, a carrier frame and a holder configured to connect the foldable carrier and the carrier frame, the foldable carrier comprising: a first portion comprising a seat tube; and a second section disposed below the first section and including a backrest assembly, seat bottom tubes, a front crossbar, and a second folding mechanism, wherein the backrest assembly is pivotally connected to one end of each of the seat bottom tubes, the front crossbar is arranged between the seat bottom tubes at an end remote from the backrest assembly, the second folding mechanism is arranged on the backrest assembly and is configured to adjust an angle of inclination of the backrest assembly relative to each of the seat bottom tubes, and wherein the second portion further comprises the folding locking mechanism of the foldable carrier according to any one of claims 23 to 31. [33] A child carrier according to claim 32, wherein the seat tube comprises an upper seat tube portion and a lower seat tube portion, and the upper seat tube portion and the lower seat tube portion are pivotally connected to each other by a pivot base. [34] A child carrier according to claim 32 or 33, wherein the second folding mechanism enables the angle of inclination of the backrest assembly relative to each of the seat bottom tubes to be adjusted in four stages. [35] A child carrier according to any one of claims 32 to 34, wherein the second folding mechanism comprises: a control element arranged on the backrest assembly; an adjustment element which is arranged at a connection between the backrest assembly and each of the seat base tubes and is configured to adjust the angle of inclination of the backrest assembly relative to each of the seat base tubes; a tension element arranged between the control element and the adjustment element, to connect the control element and the adjustment element; and a reset element configured to reset the setting element. [36] A child carrier according to claim 35, wherein the adjusting element comprises: a backrest adjustment locking element; and a backrest adjustment locking gear that is connected to the Backrest adjustment locking element is engaged to lock the angle of inclination of the backrest assembly relative to the seat base tubes in various positions. [37] A child carrier according to any one of claims 32 to 36, further comprising a support belt, and wherein the support belt is attached between the seat bottom tubes and the holder of the child carrier to support the foldable carrier. [38] Child carrier according to claim 33, optionally in combination with any one of claims 34 to 37, wherein the seat bottom tubes and the lower seat tube section are pivotally connected to each other. [39] A child carrier according to any one of claims 32 to 38, wherein the carrier frame comprises a handle member, a sub-frame and wheels, and the handle member extends obliquely upwards and rearwards from the wheels. [40] A child carrier according to any one of claims 32 to 39, wherein the seat tube comprises an upper seat tube portion and a lower seat tube portion pivotally connected to the upper seat tube portion; and wherein the first portion further comprises a first folding mechanism, and the first folding mechanism is arranged on the upper seat tube portion and is configured to allow the upper seat tube portion and the lower seat tube portion to pivot relative to each other. [41] A support frame of a child carrier, wherein a holder is mounted on the support frame and the holder is adapted to be engaged with a foldable support of the child carrier, wherein the support frame has an unfolded state and a folded state, and the holder has an operative position corresponding to the unfolded state and an inoperative position corresponding to the folded state, and wherein, when the support frame is switched between the unfolded state and the folded state, the support frame drives the holder to switch between the effective position and the ineffective position. [42] Support frame according to claim 41, comprising: a front leg frame; a handle frame pivotally connected to the front leg frame via a first pivot point; and a support frame configured to support the front leg frame, the support frame being pivotally connected to the front leg frame via a second pivot point; wherein the holder is pivotally connected to the support frame via a third pivot point and the handle frame is in sliding fit with the holder. [43] Support frame according to claim 42, wherein: the first pivot point is close to an upper end portion of the front leg frame and the second pivot point is further away from the upper end portion of the front leg frame than the first pivot point; and / or the third pivot point is near an upper end portion of the support frame and the second pivot point is farther away from the upper end portion of the support frame than the third pivot point. [44] A support frame according to claim 42 or 43, wherein one of the handle frame and the holder is provided with a connecting pin and the other of the handle frame and the holder is provided with a sliding hole, and the connecting pin is in sliding fit with the sliding hole. [45] The support frame according to claim 44, wherein the connecting pin is arranged on the handle frame, and the connecting pin is farther from a lower end portion of the handle frame than the first pivot point; and the sliding hole is arranged on the holder. [46] A support frame according to claim 44 or 45, wherein the sliding hole includes an upper end and a lower end opposite to the upper end; wherein, when the support frame is in the unfolded state, the connecting pin abuts against an end wall of the upper end of the sliding hole to restrict downward pivoting of the holder about the third pivot point; and when the support frame is in the folded state, the connecting pin moves to a lower end of the sliding hole. [47] A support frame according to any one of claims 44 to 46, wherein the sliding hole has the shape of an arc; and / or a cover plate is arranged on the holder and the cover plate covers the sliding hole on a side of the holder facing away from the handle frame. [48] A support frame according to any one of claims 42 to 47, wherein the holder is provided with a first engagement structure, the support frame is provided with a second engagement structure, and wherein, when the support frame is in the deployed state, the first engagement structure abuts the second engagement structure to limit upward pivoting of the holder about the third pivot point. [49] The support frame according to claim 48, wherein the first engagement structure and the second engagement structure are a first step and a second step fitted to each other, or a first projection and a first recess fitted to each other. [50] A support frame according to claim 48 or 49, wherein the holder is provided with a receiving portion comprising a lower opening, and the support frame extends over the lower opening into the receiving portion; the third pivot point is supported by a side wall of the receiving section; and the first engagement structure is arranged in the receiving portion. [51] A support frame according to any one of claims 44 to 50, wherein a third engagement structure is arranged on the underside of the holder, wherein the third engagement structure is arranged between the sliding hole and the third pivot point, and wherein the handle frame is provided with a fourth engagement structure, and when the support frame is in the unfolded state, the fourth engagement structure abuts against the third engagement structure. [52] The support frame of claim 51, wherein the third engagement structure is an engagement groove and the fourth engagement structure is a post. [53] Support frame according to one of claims 42 to 52, further comprising a subframe, and wherein a front end of the lower frame is pivotally connected to a lower end of the front leg frame via a fourth pivot point; and the support frame is foldable and a lower end of the support frame is pivotally connected to the subframe via a fifth pivot point. [54] The support frame according to claim 53, wherein the support frame comprises an upper bracket and a lower bracket arranged in an up-down direction and pivotally connected to each other, the upper bracket being pivotally connected to the front leg frame via the second pivot point and pivotally connected to the holder via the third pivot point, the lower bracket being pivotally connected to the lower frame via the fifth pivot point; and wherein, when the support frame is folded, a pivot joint between the upper bracket and the lower bracket is moved rearward so that the upper bracket and the lower bracket approach each other, the handle frame is rotated forward and downward to approach the front leg frame, and the front leg frame is rotated rearward and downward to approach the lower frame. [55] A support frame according to claim 54, wherein a pair of the front leg frames, a pair of the handle frames, a pair of the upper brackets, a pair of the lower brackets, a pair of the holders and a pair of the sub-frames are provided and are arranged on the left and right sides of the support frame, respectively; and lower ends of the upper brackets on the left and right sides are connected by a first cross arm and upper ends of the lower brackets on the left and right sides are connected by a second cross arm, the first cross arm being pivotally connected to the second cross arm. [56] A child carrier comprising a foldable carrier and the carrier frame according to any one of claims 41 to 55. [57] A child carrier according to claim 56, wherein the foldable carrier is the foldable carrier according to any one of claims 1 to 20 or the foldable carrier according to any one of claims 23 to 40.

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