Stroller

Abstract

A stroller, comprising a surrounding frame structure (1) and a seat-and-backrest assembly (2). The surrounding frame structure (1) is provided with a sitting-and-lying space (1a); the seat-and-backrest assembly (2) comprises a seat support portion (21) and a backrest portion (22) disposed in the sitting-and-lying space (1a); the backrest portion (22) has a lying position and a backrest position; in the backrest position, the backrest portion (22) is vertically arranged relative to the seat support portion (21); and in the lying position, the backrest portion (22) is horizontally arranged at the bottom of the sitting-and-lying space (1a). The present application solves the problem that existing strollers only allow children to remain in a seated position, resulting in discomfort after prolonged sitting.

Description

stroller

[0001] This application claims priority to Chinese patent application No. CN202520579383.6, filed on March 28, 2025, the contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of children's stroller technology, and particularly to a stroller. Background Technology

[0003] The widespread use of strollers has greatly facilitated outdoor activities for adults with young children. However, existing strollers typically only provide a seat for children, limiting their usability and causing discomfort for children during extended outings. Public content

[0004] The main purpose of this disclosure is to propose a stroller that addresses the problem that existing strollers only allow children to sit and lean against each other, leading to discomfort for children who sit for extended periods.

[0005] To achieve the above objectives, the cart disclosed herein includes:

[0006] The enclosed frame structure creates seating and reclining spaces; and,

[0007] A seat and backrest assembly includes a seat support and a backrest disposed in the sitting and lying space, wherein the backrest has a reclining position and a backrest position, wherein in the backrest position the backrest is erected relative to the seat support; and in the reclining position the backrest is flat at the bottom of the sitting and lying space.

[0008] In one embodiment, in the reclining position, the backrest covers the area above the seat support.

[0009] In one embodiment, the seat holding part and the backrest are respectively corresponding to form a seat and backrest assembly, and two seat and backrest assemblies are provided. In the backrest position, the two holding parts are located between the two backrests; in the reclining position, the two backrests are pressed against each other in the direction in which the two holding parts are arranged.

[0010] In one embodiment, a footrest area is further defined between the two seat portions;

[0011] In the lying position, both backrests together cover the footrest area.

[0012] In one embodiment, a footrest area is further defined between the two seat portions, and the trolley also includes a footrest portion, which is provided corresponding to the footrest area.

[0013] In one embodiment, the footrest extends at least partially beyond the bottom outer side of the sitting / lying space.

[0014] In one embodiment, the footrest extends along a first direction to be connected to the frame structure at both ends in the first direction.

[0015] In one embodiment, the backrest is connected to the frame structure, wherein the backrest and the frame structure are rotatably or detachably connected.

[0016] In one embodiment, the backrest is rotatably mounted on the frame structure along an axis extending in a first direction, such that the backrest is laid flat in the sitting / lying space in a second direction, wherein the first direction and the second direction are perpendicular to each other.

[0017] In one embodiment, in the backrest position, the backrest extends obliquely relative to the vertical direction; in the reclining position, the end of the backrest abuts against the edge of the frame structure along the second direction.

[0018] In one embodiment, the hinge portion is formed on the frame structure, and the mating hole portion is formed on the backrest. The mating hole portion is elongated in the length direction of the backrest so that the position of the backrest is adjustable along its length direction.

[0019] In one embodiment, the backrest has a plug-in protrusion extending along its length.

[0020] The frame structure has a mating groove corresponding to the insertion protrusion;

[0021] When in the lying position, the insertion protrusion of the backrest can be inserted into the mating groove.

[0022] In one embodiment, the mating hole is formed on the insertion protrusion.

[0023] In one embodiment, the frame structure has a stop portion formed in the sitting / lying space;

[0024] In the lying position, the backrest is pressed against the stop portion.

[0025] In one embodiment, the enclosure structure includes:

[0026] The bottom frame; and,

[0027] The upper frame is opposite to the lower frame in a third direction, and the distance between the upper frame and the lower frame is adjustable;

[0028] The sitting / lying space is formed between the bottom frame and the upper frame;

[0029] The seat and the backrest are located on the bottom frame.

[0030] In one embodiment, the trolley further includes a push rod assembly movably connected to the bottom frame so as to be retracted relative to the bottom frame.

[0031] In one embodiment, the trolley further includes a shower head assembly disposed on the upper frame corresponding to the seat support.

[0032] In this disclosed technical solution, the seat and backrest assembly is placed within the sitting / lying space formed by the frame structure. Adjusting the backrest allows it to switch between a reclining position and a backrest position. When the backrest is in the backrest position, it and the seat arm can cooperate to form a child seat, allowing the child to sit and lean against it. If the child becomes drowsy or tired during a long outing, the backrest can be adjusted to a reclining position, allowing it to lie flat at the bottom of the sitting / lying space, serving as a sleeping board for the child to lie on. This solves the problem of discomfort caused by prolonged sitting in existing strollers that only allow children to sit and lean against the backrest. Furthermore, the frame structure provides restraint and protection for the child within the sitting / lying space, preventing falls. Therefore, a safety belt assembly is not required to restrain the child when they are in a sitting / lying position, improving the child's comfort. Attached Figure Description

[0033] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 is a structural schematic diagram of an embodiment of the trolley (with the backrest in the backrest position) provided in this disclosure;

[0035] Figure 2 is a schematic diagram of the stroller in Figure 1 (with the backrest in a reclining position);

[0036] Figure 3 is a magnified structural diagram of part A in Figure 2.

[0037] Explanation of icon numbers:

[0038] 100. Stroller;

[0039] 1. Enclosure structure; 11. Bottom enclosure; 111. Fitting groove; 12. Upper enclosure; 13. Stop; 1a. Sitting / lying space; 2. Seat back assembly; 21. Seat support; 22. Backrest; 221. Insertion protrusion; 222. Fitting hole; 3. Footrest; 4. Canopy assembly; 5. Push rod assembly; 6. Wheel assembly; 7. Lifting and adjusting assembly. Detailed Implementation

[0040] The technical solutions in the embodiments of this application will now be clearly and completely described with reference to the accompanying drawings, so that the advantages and features of this disclosure can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that if the embodiments of this disclosure involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this disclosure involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this disclosure.

[0043] The widespread use of strollers has greatly facilitated outdoor activities for adults with young children. However, existing stroller seats are usually only for children to sit on, not to lie down, limiting their usability and causing discomfort for children during long outings.

[0044] Analysis of the above problems shows that stroller seats usually only have an unfolded state and a folded state. When unfolded, they are used for children to sit and lean against, but when folded, they can only be used for portable storage. Therefore, they cannot be used for children to sleep. It is worth considering improving stroller seats so that when folded, the backrest can be used as a sleeping board for children to sleep on.

[0045] In view of this, the present disclosure proposes a stroller that solves the problem that existing strollers can only be used for children to sit and lean against, which leads to discomfort for children who sit for a long time. Figure 1 is a structural schematic diagram of an embodiment of the stroller provided by the present disclosure (with the backrest in the backrest position); Figure 2 is a structural schematic diagram of the stroller in Figure 1 (with the backrest in the reclining position); Figure 3 is an enlarged structural schematic diagram of part A in Figure 2.

[0046] Please refer to Figures 1 and 2. In one embodiment of this disclosure, the trolley 100 includes a frame structure 1 and a seat and backrest assembly 2. The frame structure 1 forms a sitting / lying space 1a. The seat and backrest assembly 2 includes a seat holding part 21 and a backrest 22 disposed in the sitting / lying space 1a. The backrest 22 has a lying position and a backrest position. In the backrest position, the backrest 22 is erected relative to the seat holding part 21. In the lying position, the backrest 22 is laid flat at the bottom of the sitting / lying space 1a.

[0047] It should be noted that during normal use, the sitting and lying space 1a formed by the frame structure 1 is generally open in the vertical direction, and the seat support 21 is generally set upward in the sitting and lying space 1a. This is to provide support for the child. When the child sits on the seat support 21 and the backrest 22, his / her legs can be in the sitting and lying space 1a or can extend out of the sitting and lying space 1a from the bottom. However, the main part of his / her body needs to be in the sitting and lying space 1a along with the seat support 21 and the backrest 22. The specific function of the frame structure 1 is to limit and protect the child and prevent the child from falling. This embodiment does not limit its specific structural form.

[0048] This embodiment only limits the backrest 22 to having two position states: a reclining position and a backrest position. The method of switching the backrest 22 between these two positions is not limited. For example, the position of the backrest 22 can be adjusted by disassembly and reassembly, or by rotation or flipping. Furthermore, "the backrest 22 is placed flat at the bottom of the reclining space 1a" means that the backrest 22, either on its own or in conjunction with the seat support 21, can cover the bottom opening of the reclining space 1a, forming a support for the reclining space 1a, thus allowing the child to recline. This includes various solutions, such as the bottom end of the backrest 22 being hinged to the seat support 21 or the frame. When structure 1 is installed, the backrest 22, when in the backrest position, can be adjusted to be flush with the seat support 21 by tilting back, thus changing to a lying position, so as to form a sleeping board to cover the sitting and lying space 1a. Alternatively, the backrest 22 can be detached and reassembled from the backrest position which is set at an angle to the seat support 21, and then reassembled to one side of the seat support 21, so as to form a sleeping board together with the seat support 21 to cover the sitting and lying space 1a. Of course, there are also many solutions where the backrest 22 itself can cover the sitting and lying space 1a simply by using the backrest 22 itself as a sleeping board. In this embodiment, the method of enabling the child to lie down by placing the backrest 22 flat at the bottom of the sitting and lying space 1a is not limited.

[0049] In this disclosed technical solution, the seat and backrest assembly 2 is placed in the sitting / lying space 1a formed by the frame structure 1. The backrest 22 can be adjusted to reach either a reclining position or a backrest position. When the backrest 22 is in the backrest position, it can cooperate with the seat support 21 to form a child seat, allowing the child to sit and lean against it. If the child becomes drowsy or tired during a long outing, the backrest 22 can be adjusted to the reclining position, allowing it to lie flat at the bottom of the sitting / lying space 1a, serving as a sleeping board for the child to lie on. This solves the problem of discomfort caused by prolonged sitting in existing strollers 100, which only allow children to sit and lean against the seat. Furthermore, the frame structure 1 provides restraint protection for the child in the sitting / lying space 1a, preventing falls. Therefore, when the child is in a sitting or lying position, there is no need to use a safety belt assembly to restrain them, avoiding any restriction on the child's body and improving the child's comfort.

[0050] Among the various possible technical solutions mentioned above, if the technical solution of using the seat support 21 and the backrest 22 to work together to cover the sitting and lying space 1a is adopted, it is necessary to consider that the seat support 21 also participates in forming the sleeping board, and its structural form also needs to be limited. That is, the seat support 21 usually needs to be made of the same hard material as the backrest 22, and it is difficult to adopt the flexible seat support form of the seat support, which may reduce the comfort of the child when sitting and leaning. In view of this, in one embodiment, in the lying position, the backrest 22 covers the top of the seat support 21.

[0051] It should be noted that the fact that the backrest 22 covers the seat support 21 when in the lying position means that the backrest 22 does not need to cooperate with the seat support 21; it can cover the sitting and lying space 1a on its own. Since the length of the sitting and lying space 1a needs to meet the height requirements of children, the length of the backrest 22 needs to be adaptively set to be larger, or the length of the backrest 22 itself can be adjusted. For example, the backrest 22 is composed of two hinged backrest flip structures. When in the backrest position, the two backrest flip structures are closed for the child to lean against; when in the lying position, the two backrest flip structures are unfolded to form a longer sleeping board to cover the sitting and lying space 1a.

[0052] According to the above technical solution, when lying down, the backrest 22 covers the seat support 21, which is located above it. In other words, the backrest 22 covers the seat support 21, and the backrest 22 itself can form a sleeping board for the child to lie down. Therefore, the specific structure and material of the seat support 21 are not limited. The seat support 21 can be made of a softer material to improve the comfort of the child sitting and leaning.

[0053] After ensuring the comfort of children sitting, it is also necessary to ensure the comfort of children lying down. Therefore, in some embodiments, the backrest 22 has a backrest side and a lying side. Specifically, the backrest side and the lying side can be two different sides in the thickness direction of the backrest 22. The hardness of the lying side is lower than that of the backrest side. When the backrest 22 is in the backrest position, the backrest side can provide sufficient support for children and prevent them from sinking into it. When the backrest 22 is in the lying position, the lying side faces upward, and children can get a more comfortable sleep experience by lying on the softer lying side.

[0054] Considering that many families have two children, in order to meet the travel requirements of such family members, in one embodiment, the seat holding part 21 and the backrest 22 correspond one-to-one to form a seat and backrest group. Two seat and backrest groups are provided and are arranged opposite each other in the second direction. Specifically, in the backrest position, the two holding parts 21 are located between the two backrests 22; in the lying position, the two backrests 22 are pressed against each other in the second direction.

[0055] It should be noted that the second direction is the reference direction of the trolley 100 itself, and also the direction in which the two pressing parts 21 are arranged. In specific use, the second direction can be a front-back direction or a left-right direction. When the second direction is a left-right direction, the two seat back components are located on the left and right sides of the person pushing the trolley 100. When the second direction is a front-back direction, the two seat back components are located closer and farther in front of the person pushing the trolley 100. In this embodiment, the two backrests 22 can be adjusted from the backrest position to a lying position by sliding the bottom towards each other to splice and tilting the top back to a flat position. The position can also be adjusted in other ways. In this embodiment, the position adjustment form of the backrests 22 is still not limited.

[0056] According to the above technical solution, setting two seat and backrest sets can simultaneously meet the sitting and backing needs of two children. At the same time, by adjusting the position of the two backrests 22 in the two seat and backrest sets, the two backrests 22 can be spliced ​​together in the lying position to form a sleeping board. Its length can also meet the lying needs of two children. This solution of forming a sleeping board by combining two backrests 22 reduces the length requirement of a single backrest 22, which can be adapted to the overall size of the seat 21. The person pushing the stroller 100 will not be blocked by an excessively long backrest 22, thus reducing the connection with the sitting child. This makes the stroller 100 proposed in this disclosure more in line with user habits in terms of both appearance and actual use.

[0057] Furthermore, in one embodiment, a footrest area is defined between the two seat portions 21; when in a reclining position, the two backrests 22 together cover the footrest area.

[0058] It should be noted that, according to the aforementioned embodiment, the two seat back assemblies are arranged opposite each other in the second direction, which means that the side ends of the seat holding parts 21 in the two seat back assemblies are also arranged opposite each other in the second direction; the footrest area is for two children to stretch their legs, and its size is not limited in this embodiment, as long as it can meet the comfort requirements of children.

[0059] According to the above technical solution, a footrest area is defined between the two seat parts 21, which allows two children to stretch their legs together, ensuring the comfort requirements of the children. The two backrests 22 can cover the footrest area together, which can prevent the limbs of children from being exposed from the footrest area during the sleeping process, reducing potential dangers.

[0060] In another embodiment, a footrest area is defined between the two seat portions 21, and the trolley 100 also includes a footrest portion 3, which is set to correspond to the footrest area.

[0061] It should be noted that the footrest 3 is designed to provide support for the child's legs. It can take many different structural forms, such as rods or plates. It can also be placed in various locations, such as on the frame structure 1 or on the two seat parts 21. This embodiment does not limit the specific structural form or placement of the footrest 3.

[0062] According to the above technical solution, a footrest area is defined between the two seat parts 21, which allows two children to stretch their legs together, ensuring the comfort requirements of the children. The footrest 3 is set in the footrest area to provide support for the children's dangling legs, further improving the children's comfort.

[0063] Furthermore, in one embodiment, the footrest 3 extends at least partially beyond the bottom outer side of the sitting / lying space 1a.

[0064] It should be noted that "the footrest 3 extends at least partially out of the bottom outer side of the sitting / lying space 1a" means that when the child is in a sitting or reclining position, his / her legs can extend out of the sitting / lying space 1a. In this design, the seat support 21 is located at the bottom boundary of the sitting / lying space 1a.

[0065] According to the above technical solution, since the footrest 3 extends at least partially out of the bottom outside of the sitting and lying space 1a, the child's legs can extend out of the sitting and lying space 1a along with the footrest 3. The frame structure 1 does not need to protect the child's legs when in a sitting or leaning position. As a result, the frame structure 1 can be simplified in structural design, avoid setting up too many unnecessary structures, and reduce the overall weight and manufacturing cost of the stroller 100.

[0066] In another embodiment, the footrest 3 extends along a first direction to be connected at both ends of the frame structure 1 in the first direction.

[0067] It should be noted that in this embodiment, the footrest 3 is defined as being disposed on the frame structure 1 and extending along the first direction. The first direction is the reference direction of the trolley 100 itself. In specific use, the second direction can be the front-back direction or the left-right direction. However, in general, the first direction and the second direction in the aforementioned embodiment are usually two directions that are perpendicular to each other.

[0068] According to the above technical solution, since the frame structure 1 is the main load-bearing structure of the stroller 100, its structural strength is high. Connecting the footrest 3 to the frame structure 1 can provide more stable support for the child's legs and can directly distribute the child's body weight from the seat 21 to the frame structure 1, thereby reducing the strength design requirements of the seat 21.

[0069] In the above embodiments, the connection relationship of the backrest 22 is not limited. The backrest 22 can be connected to the seat 21 or to other structures. Specifically, in this embodiment, the backrest 22 is connected to the frame structure 1.

[0070] It should be noted that the specific connection method between the backrest 22 and the frame structure 1 depends on the specific position adjustment method of the backrest 22, and this embodiment does not limit it.

[0071] For the same reason, since the frame structure 1 is the main load-bearing structure of the stroller 100 and has high structural strength, connecting the backrest 22 to the frame structure 1 can achieve higher connection strength and can also directly transmit the force generated when the child sits to the frame structure 1. This avoids fatigue damage to the connecting structure caused by connecting the frame structure 1 and the backrest 22 through the connecting structure, simplifies the structural design of the stroller 100, and improves the reliability of the stroller 100.

[0072] Furthermore, in one embodiment, the backrest 22 is rotatably mounted to the frame structure 1 along an axis extending in a first direction, so that the backrest 22 can be laid flat in the sitting / lying space 1a in a second direction.

[0073] It should be noted that this embodiment limits the specific connection method between the backrest 22 and the frame structure 1, that is, limits the position adjustment method of the backrest 22; the first direction and the second direction are the reference directions of the trolley 100 itself. In specific use, the first direction and the second direction can be one of the front-back direction and the left-right direction, that is, the first direction and the second direction are usually two mutually perpendicular directions.

[0074] According to the above technical solution, the backrest 22 and the frame structure 1 are connected by rotation, which is simpler in terms of function and structure. It is a more reliable and lower cost solution in the design of the trolley 100.

[0075] Since the rotating connection structure between the backrest 22 and the frame structure 1 requires a certain amount of space, and in order to ensure the child's sitting comfort, the backrest 22 needs to maintain a certain degree of tilt when in the backrest position. The existence of the tilt means that the rotating connection structure between the backrest 22 and the frame structure 1 needs to be further away from the corresponding edge of the frame structure 1. This will result in a certain gap between the bottom of the backrest 22 and the frame structure 1 when in the lying position. This gap affects the child's lying experience and is also a potential danger. In view of this, please refer to Figure 3 (the hinge is not shown in Figure 3, but it does not affect the understanding of the solution). In one embodiment, the frame structure 1 and the backrest 22 are respectively formed with a hinge and a mating hole 222 that rotate with each other. The mating hole 222 is elongated in the length direction of the backrest 22 so that the position of the backrest 22 is adjustable along its length direction.

[0076] It should be noted that this length direction is a reference direction of the backrest 22 itself, and it is not necessarily related to the first and second directions in the above embodiments.

[0077] According to the above technical solution, the backrest 22 is connected to the hinge on the frame structure 1 through its own mating hole 222. Since the mating hole 222 is elongated along the length of the backrest 22, the backrest 22 can be adjusted along its own length along the extension stroke of the mating hole 222 at any position. This also includes the position adjustment when in a lying position. With this design, the bottom of the backrest 22 can gradually move closer to the corresponding edge of the frame structure 1 during the flipping process, so as to finally press against the frame structure 1, thereby eliminating the gap between it and the frame structure 1, thus eliminating potential dangers and improving the child's lying experience.

[0078] Since the backrest 22 needs to be tilted in the backrest position, this can be used to support the backrest 22, thereby automatically limiting the backrest 22 to the backrest position. For example, the upper frame 12 in the frame structure 1 in Figures 1 and 2 can be used to support the backrest 22. Of course, other methods can also be used to limit the backrest 22. In one embodiment, the backrest 22 has an insertion protrusion 221 extending along its length direction; the frame structure 1 has a mating groove 111 corresponding to the insertion protrusion 221; when in the lying position, the insertion protrusion 221 of the backrest 22 can be inserted into the mating groove 111.

[0079] According to the above technical solution, the backrest 22 is able to be adjusted appropriately at any circumferential position along its own length direction. An insertion protrusion 221 is provided on the backrest 22, and a matching groove 111 is provided on the frame structure 1. When adjusting from the reclining position to the backrest position, the movement of the backrest 22 along its length direction can drive the insertion protrusion 221 to fit into the matching groove 111, thereby playing a role in limiting the flipping of the backrest 22 so that it is kept in the backrest position.

[0080] Similarly, when it is necessary to adjust the backrest 22 to a reclining position, simply lift the backrest 22 slightly to disengage the insertion protrusion 221 from the mating groove 111, and then continue to rotate and adjust the backrest 22.

[0081] The mating hole 222 can theoretically be located at any position on the backrest 22, but in this embodiment, the mating hole 222 is formed on the insertion protrusion 221. By directly setting the mating hole 222 on the insertion protrusion 221, the rotational connection structure and the flip-limiting structure between the backrest 22 and the frame structure 1 are more compact, which is more in line with the user's aesthetic requirements in terms of appearance, and can also reduce the difficulty of manufacturing in terms of structural design.

[0082] It is understood that in other embodiments, a mating hole may be formed on the frame structure 1, and a hinge may be formed at the bottom of the backrest 22 accordingly. The hinge and the mating hole are arranged to be able to rotate relative to each other and slide relative to each other. This allows the backrest 22 to extend in a relatively vertical direction when in the backrest position to provide leaning support in an inclined posture, and the end of the backrest 22 to abut against the edge of the frame structure 1 in a second direction when in the lying position.

[0083] It should be understood that after the backrest 22 is adjusted from the backrest position to the reclining position, it needs to be supported to prevent the backrest 22 from collapsing towards the bottom side of the frame structure 1. In some embodiments, the backrest 22 can be directly pressed against the seat support 21 in the reclining position. However, the area of ​​the seat support 21 is usually smaller than that of the backrest 22. Therefore, there is a problem of uneven force on the backrest 22 in this solution. In this embodiment, the frame structure 1 forms a stop 13 in the reclining space 1a. In the reclining position, the backrest 22 is pressed against the stop 13.

[0084] It should be noted that the location and number of stop parts 13 need to be able to limit the collapse of the backrest 22 toward the bottom of the frame structure 1. The specific location depends on the connection method between the backrest 22 and the frame structure 1. For example, when the backrest 22 is rotatably connected to the frame structure 1, the bottom of the backrest 22 is restricted by the frame structure 1 and supported by the frame structure 1. Therefore, at least one stop part 13 needs to be set in the sitting / lying space 1a of the frame structure 1 to limit the backrest 22. When the backrest 22 is detachably connected to the frame structure 1, multiple points need to be restricted for the backrest 22. Therefore, multiple stop parts 13 need to be set around the perimeter of the backrest 22.

[0085] According to the above technical solution, a stop part 13 is provided in the sitting and lying space 1a of the frame structure 1, which can support the backrest 22 and avoid the problem of uneven force due to the backrest 22 pressing on the seat support part 21, thus ensuring the structural stability of the backrest 22 when it is in the lying position.

[0086] In one specific embodiment, the seat support 21 and the backrest 22 correspond one-to-one to form a seat and backrest assembly. Two seat and backrest assemblies are provided and are arranged opposite each other in the second direction. When lying down, the two backrests 22 are pressed against each other in the second direction and simultaneously pressed against the stop part 13.

[0087] For the frame structure 1, it is only necessary to form a sitting or lying space 1a therein. The specific structural type can be of various forms. In this embodiment, please refer to Figures 1 and 2. The frame structure 1 includes a bottom frame 11 and an upper frame 12. The upper frame 12 is opposite to the bottom frame 11 in a third direction, and the distance between the upper frame 12 and the bottom frame 11 is adjustable. The sitting or lying space 1a is formed between the bottom frame 11 and the upper frame 12. The seat 21 and the backrest 22 are provided in the bottom frame 11.

[0088] It should be noted that the third direction is the reference direction of the trolley 100 itself, but in actual use, the third direction is generally the up and down direction; the upper frame 12 is opposite to the lower frame 11 in the third direction, and the distance between the upper frame 12 and the lower frame 11 is adjustable. The distance adjustment is generally completed by the lifting adjustment component 7. There are many specific structural types of the lifting adjustment component 7, such as the scissor lifting component shown in Figures 1 and 2. This embodiment does not limit it.

[0089] According to the above technical solution, by setting the upper frame 12 to have an adjustable distance from the bottom frame 11, the stroller 100 can adapt to the usage needs of children of different ages. When the child is young and short, the upper frame 12 can be lowered appropriately to ensure that the child can obtain a view of the outside of the frame structure 1 when sitting. When the child is older and taller, the upper frame 12 can be raised appropriately to ensure that the child's body is in the sitting / lying space 1a and to ensure the child's safety.

[0090] In one embodiment, the trolley 100 further includes a shower head assembly 4, which is disposed on the upper frame 12 corresponding to the seat 21.

[0091] It should be noted that the specific structure of the shower head assembly 4 in this embodiment will not be described in detail.

[0092] According to the above technical solution, the canopy component 4 can provide sunshade and rain protection for children in the sitting or lying space 1a, and can also be folded up appropriately to ensure that children can get a view of the outside of the frame structure 1 when sitting or leaning.

[0093] In one specific embodiment, the seat support 21 and the backrest 22 are arranged in a one-to-one correspondence to form a seat and backrest group. Two seat and backrest groups are provided and are arranged opposite each other in the second direction. When lying down, the two backrests 22 are joined together in the second direction. The shower head assembly 4 is provided in two sets corresponding to the seat support 21 of the two seat and backrest groups, so as to meet the sunshade needs of children in each seat and backrest group.

[0094] In one specific embodiment, a wheel assembly 6 and a push rod assembly 5 are also provided on the bottom frame 11. The push rod assembly 5 is movably connected to the bottom frame 11 so as to be able to be retracted relative to the bottom frame 11. Here, one end of the push rod assembly 5 is rotatably connected to one end of the bottom frame 11. When pushed, the other end of the push rod assembly 5 extends to the outside of the sitting / lying space 1a to form a pushing end. A support rod assembly is movably provided between the bottom frame 11 and the push rod assembly 5 to support the push rod assembly 5 in an inclined state for pushing.

[0095] The above are merely exemplary embodiments of this disclosure and are not intended to limit the patent scope of this disclosure. Any equivalent structural transformations made using the contents of this specification and drawings under the technical concept of this disclosure, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this disclosure.

Claims

1. A trolley, characterized in that, include: The enclosed frame structure creates seating and reclining spaces; and, The seat and backrest assembly includes a seat support and a backrest disposed in the sitting / reclining space. The backrest has a reclining position and a backrest position. In the backrest position, the backrest is upright relative to the seat support. In the reclining position, the backrest is flat at the bottom of the reclining space.

2. The trolley as described in claim 1, characterized in that, In the reclining position, the backrest covers the area above the seat support.

3. The trolley as described in claim 2, characterized in that, The seat support and the backrest correspond one-to-one to form a seat and backrest assembly. Two seat and backrest assemblies are provided. In the backrest position, the two pressing parts are located between the two backrests; in the reclining position, the two backrests are pressed against each other in the direction in which the two pressing parts are arranged.

4. The trolley as described in claim 3, characterized in that, A footrest area is also defined between the two aforementioned seat parts; In the lying position, both backrests together cover the footrest area.

5. The trolley as described in claim 3, characterized in that, A footrest area is defined between the two seat parts, and the trolley also includes a footrest, which is provided corresponding to the footrest area.

6. The trolley as described in claim 5, characterized in that, The footrest extends at least partially beyond the bottom outer side of the sitting / lying space.

7. The stroller as described in any one of claims 1 to 6, characterized in that, The backrest is connected to the frame structure, wherein the backrest is rotatably or detachably connected to the frame structure.

8. The trolley as described in claim 7, characterized in that, The backrest is rotatably mounted on the frame structure along an axis extending in a first direction, such that the backrest is laid flat in the sitting / lying space in a second direction, wherein the first direction and the second direction are perpendicular to each other.

9. The trolley as described in claim 8, characterized in that, In the backrest position, the backrest extends at an angle relative to the vertical direction; in the reclining position, the end of the backrest abuts against the edge of the frame structure along the second direction.

10. The trolley as described in claim 9, characterized in that, The frame structure and the backrest have a hinge portion on one of them and a mating hole portion on the other. The mating hole portion is elongated and is configured to cooperate with the hinge portion in a way that allows it to both rotate and slide relative to each other.

11. The trolley as described in claim 10, characterized in that, The hinge portion is formed on the frame structure, and the mating hole portion is formed on the backrest. The mating hole portion is elongated in the length direction of the backrest so that the position of the backrest is adjustable along its length direction.

12. The trolley as described in claim 11, characterized in that, The backrest has a plug-in protrusion extending along its length. The frame structure has a mating groove corresponding to the insertion protrusion; When in the lying position, the insertion protrusion of the backrest can be inserted into the mating groove.

13. The trolley as described in claim 12, characterized in that, The mating hole is formed on the insertion protrusion.

14. The stroller as described in any one of claims 1 to 6, characterized in that, The frame structure has a stop portion corresponding to the sitting / lying space; In the lying position, the backrest is pressed against the stop portion.

15. The trolley as described in any one of claims 1 to 6, characterized in that, The frame structure includes: The bottom frame; and, The upper frame is opposite to the lower frame in a third direction, and the distance between the upper frame and the lower frame is adjustable; The sitting / lying space is formed between the bottom frame and the upper frame; The seat and the backrest are located on the bottom frame.

16. The trolley as described in any one of claims 15, characterized in that, The trolley also includes a push rod assembly movably connected to the bottom frame so as to be retracted relative to the bottom frame.

17. The trolley as described in any one of claims 15, characterized in that, The trolley also includes a shower head assembly, which is disposed on the upper frame corresponding to the seat support.

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