Stroller

Abstract

The utility model discloses a kind of children's pushchairs, including frame and storage box, frame includes front support, front wheel, rear support, rear wheel, cushion and push rod, front support and rear support are hinged, cushion is installed above the connecting point of front support and rear support, the root of push rod is connected with front support, push rod is located the rear side of cushion, front wheel is vertically installed in the bottom of front support, rear wheel is vertically installed in the bottom of rear support;Storage box is detachably connected to front support, and located in front of front support, storage box is provided with first storage groove for accommodating rear support;In unfolded state, rear support is separated from first storage groove, in folding state, rear support is stored in first storage groove.Collecting box is set in the front side of front support, the larger space of the front side of front support can be used, the volume of storage box is designed to be larger without affecting folding storage, and storage box and front support are detachably connected, so that storage box can be detached and used separately.

Description

Technical Field

[0001] This utility model relates to the field of stroller technology, and in particular to children's strollers. Background Technology

[0002] With the accelerating pace of modern life and the increasing frequency of parent-child travel, the multi-functional needs of children in travel scenarios are becoming increasingly prominent. Currently, parents often face two core demands when taking children out (such as short trips, shopping, outdoor activities, etc.):

[0003] On the one hand, it is necessary to carry a large number of children-related items, including daily necessities such as milk powder, diapers, changes of clothes, toys, complementary foods, and wet wipes. In some scenarios, it is also necessary to carry stroller accessories, folding seats, etc., which places high demands on the capacity and convenience of storage space.

[0004] On the other hand, children are prone to fatigue during travel, so a safe and comfortable riding environment must be provided at all times, and it must meet the special safety standards for children (such as anti-rollover, seat belt protection, load-bearing stability, etc.).

[0005] However, existing products cannot simultaneously meet the above requirements:

[0006] While traditional strollers can meet the safety requirements for children, their design focuses on the riding function. The storage space is usually just a small storage basket under the seat, which has limited capacity and weak load-bearing capacity. It cannot carry a large number of items and cannot meet storage needs. Furthermore, it cannot be used as a standalone storage device.

[0007] To combine storage and seating functions, some manufacturers add simple cushions or folding seats to suitcases, making them suitable for temporary seating. However, the core design of these products still revolves around luggage transportation and has not been optimized for children's physiological characteristics and safety needs. For example, they lack standard five-point safety belts, anti-slip devices, and stability support structures, which fail to meet the safety standards for children's products and pose safety hazards such as tipping over and falling, making it difficult to ensure the safety of children riding in them.

[0008] Therefore, there is a clear contradiction between the storage needs and safe riding requirements of existing products for children's travel. There is an urgent need for a multifunctional product that can provide ample storage space while meeting the safety standards of children's strollers, in order to solve the above-mentioned technical pain points. Utility Model Content

[0009] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a children's stroller that can simultaneously meet the dual needs of "large-capacity storage" and "compliant and safe riding", and the storage box can be used separately.

[0010] The stroller according to this utility model embodiment includes:

[0011] The frame includes a front support, a front wheel, a rear support, a rear wheel, a seat, and a push rod. The front support and the rear support are hinged together. The seat is mounted above the connection point between the front support and the rear support. The root of the push rod is connected to the front support and the push rod is located behind the seat. The front wheel is vertically mounted at the bottom of the front support, and the rear wheel is vertically mounted at the bottom of the rear support.

[0012] A storage box is detachably connected to the front bracket and located in front of the front bracket. The storage box is provided with a first storage slot for accommodating the rear bracket.

[0013] The stroller has an unfolded state and a folded state. In the unfolded state, the rear support is detached from the first storage slot, and in the folded state, the rear support is stored in the first storage slot.

[0014] The stroller according to the present utility model has at least the following beneficial effects: the stroller is based on a structure that meets safety standards, and the storage box is set on the front side of the front support. This allows for the use of the larger space on the front side of the front support to design a larger storage box without affecting folding and storage. Furthermore, the storage box is detachably connected to the front support, allowing the storage box to be removed and used separately, thus expanding the usage scenarios.

[0015] According to some embodiments of the present invention, the front support includes a crossbeam and a longitudinal beam, the front wheel is vertically mounted on the bottom of the crossbeam, the longitudinal beam is located in the first storage slot, and the storage box is connected to the longitudinal beam through an installation assembly.

[0016] According to some embodiments of the present invention, the mounting assembly includes a mounting base, a locking member, a first connecting part, and a second connecting part. The mounting base includes a base plate, a first side plate, and a second side plate. The base plate is connected to the bottom wall of the first storage groove. The first side plate and the second side plate are respectively connected to opposite sides of the base plate. The longitudinal beam is located between the first side plate and the second side plate and abuts against the base plate. The first connecting part is hinged to the first side plate, and the second connecting part is hinged to the second side plate. The first connecting part abuts against the side of the longitudinal beam away from the base plate. The second connecting part is fastened to the first connecting part by the locking member.

[0017] According to some embodiments of this utility model, the first connecting part is provided with a shaft hole and a limiting groove, the locking member is provided with a rotating shaft and a limiting block, the rotating shaft is rotatably connected to the shaft hole, and a retaining ring is provided on the rotating shaft to prevent the rotating shaft from disengaging from the shaft hole, the limiting block is located in the limiting groove, the limiting groove is arc-shaped, and is used to limit the rotation angle of the locking member, the second connecting part is located on the side of the first connecting part away from the base plate, the second connecting part is provided with a clearance hole, the rotating shaft passes through the clearance hole, the locking member is also provided with a knob, the length of the knob is greater than the diameter of the clearance hole, the second connecting part is also provided with an unlocking hole, the unlocking hole is located on one side of the clearance hole and communicates with the clearance hole, when the knob is rotated to the position of the unlocking hole, the second connecting part can be rotated open.

[0018] According to some embodiments of the present invention, the knob is provided with a positioning post, and the second connecting part is provided with a positioning hole and a guide groove. The guide groove is used to guide the positioning post to the unlocking hole or to the positioning hole.

[0019] According to some embodiments of the present invention, the crossbeam is arc-shaped and bends toward the rear support.

[0020] According to some embodiments of the present invention, the storage box is provided with a second storage groove for accommodating the crossbeam, and the crossbeam supports the storage box.

[0021] According to some embodiments of the present invention, the storage box includes a first part located below the crossbeam, the first part being provided with a clearance groove, the clearance groove being used to avoid the rear wheel in the folded state.

[0022] According to some embodiments of the present invention, in the same vertical plane, from top to bottom, the depth of the storage box gradually decreases in the front-to-back direction.

[0023] According to some embodiments of the present invention, the bottom surface of the storage box is provided with a support block, and the outside of the storage box is provided with a handle.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the stroller in the unfolded state according to an embodiment of the present invention;

[0027] Figure 2for Figure 1 This is a schematic diagram showing the stroller in its unfolded state from another angle;

[0028] Figure 3 for Figure 1 The illustration shows a stroller in a folded state;

[0029] Figure 4 for Figure 1 A schematic diagram showing one angle of the storage box;

[0030] Figure 5 for Figure 1 A schematic diagram showing another angle of the storage box;

[0031] Figure 6 for Figure 1 The diagram shown illustrates the stroller after the storage box has been removed.

[0032] Figure 7 for Figure 4 An exploded view of the locking member, the first connecting part, and the second connecting part is shown.

[0033] Figure 8 for Figure 7 A schematic diagram of the locking mechanism is shown;

[0034] Figure 9 A schematic diagram illustrating the state of the component installation process;

[0035] Figure 10 This is an illustration of another state during the component installation process.

[0036] Figure 11 This is an illustration of another state during the component installation process.

[0037] Figure label:

[0038] 100. Front bracket; 110. Crossbeam; 120. Longitudinal beam; 200. Front wheel; 300. Rear bracket; 400. Rear wheel; 500. Push rod; 600. Storage box; 610. Mounting assembly; 620. First storage slot; 630. Mounting base; 631. First side plate; 632. Second side plate; 640. First connecting part; 641. Shaft hole; 642. Limiting groove; 650. Second connecting part Part; 651, clearance hole; 652, positioning hole; 653, guide groove; 654, unlocking hole; 660, locking element; 661, pivot; 662, limit block; 663, knob; 664, positioning post; 670, second storage slot; 680, first part; 690, clearance groove; 691, support block; 692, handle; 700, seat cushion; 800, circular guardrail; 900, backrest. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0042] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0043] Reference Figure 1 and Figure 2 This utility model embodiment of the stroller includes a front frame 100, front wheels 200, rear frame 300, rear wheels 400, push rod 500, storage box 600, seat cushion 700, circular guardrail 800, and backrest 900. The frame is composed of the front frame 100, front wheels 200, rear frame 300, rear wheels 400, push rod 500, and seat cushion 700. The front frame 100 and rear frame 300 form the triangular basic frame of the stroller, rigidly connected by a connection point located at the midpoint of the stroller's front-to-back direction (e.g., the center from the front to the rear) and the midpoint of its vertical direction (e.g., the geometric center of the height from the ground to the frame height). The front wheels 200 are vertically mounted at the bottom of the front frame 100 and typically employ a swivel wheel structure, serving both steering and load-bearing functions. The rear wheels 400 are vertically mounted at the bottom of the rear frame 300 and typically employ a fixed wheel structure, primarily serving a load-bearing function. The storage box 600 is installed on the front of the trolley and is directly connected to the front bracket 100 (located above the front wheel 200).

[0044] The seat cushion 700 is mounted above the connection point of the front support 100 and the rear support 300, meaning it horizontally covers directly above this connection point and forms the core seating area for the child. The push rod 500 is located behind the seat cushion 700 and extends obliquely upwards and backwards. The base of the push rod 500 connects to the front support 100, forming a single integrated structure. The guardian pushes the push rod 500 from behind to move the stroller forward. The circular guardrail 800 is located above the seat cushion 700, forming a closed protective frame around its perimeter to prevent accidental falls. The backrest 900 is connected to the circular guardrail 800 and has a rigid structure, providing back support for the child.

[0045] The front support 100 and rear support 300 are hinged, unlike a rigid connection. The hinged structure allows relative rotation between them, providing a basis for the subsequent folding action of the stroller. The storage box 600 is detachably connected to the front support 100. The storage box 600 is assembled to the front support 100 using a detachable connection method (e.g., through snap-fit, bolts, or other detachable structures). This detachable design allows the storage box 600 to be easily removed for cleaning, replacement, or individual use. The storage box 600 is located in front of the front support 100 and has a first storage slot 620 for accommodating the rear support 300. The stroller has an unfolded state and a folded state; the unfolded state is the normal use state of the stroller. In the unfolded state, the rear support 300 detaches from the first storage slot 620, and the front support 100 and rear support 300 unfold to a suitable angle through the hinge point, together forming the support frame of the stroller to meet the needs of children riding and pushing. The folded state refers to the stroller's storage or carrying position. In this state, by rotating the hinge point between the front support 100 and the rear support 300, the rear support 300 can be rotated and stored in the first storage slot 620 of the storage box 600, thus folding the stroller. After folding, the rear support 300 does not protrude from the storage box 600, or only slightly protrudes, significantly reducing the overall size of the stroller and making it easy to store (e.g., in a corner of the home) or carry (e.g., in a car trunk).

[0046] It should be noted that the storage box 600 is located in front of the front support 100, without compromising the space of other functional areas (such as the seat cushion 700 or the rear wheel 400 load-bearing area). This allows for the independent design of a larger or deeper box, increasing storage capacity. Furthermore, the opening of the storage box 600 is also located at the front of the stroller, ensuring that it is not obstructed by other parts whether the stroller is unfolded or folded, making it easy to open and close and suitable for storing frequently accessed items.

[0047] Reference Figure 6The front support 100 includes a crossbeam 110 and a longitudinal beam 120. The front wheel 200 is vertically mounted on the bottom of the crossbeam 110, and the longitudinal beam 120 is located within the first storage slot 620. (Refer to...) Figure 3 The storage box 600 is connected to the longitudinal beam 120 via the mounting assembly 610. The crossbeam 110 is the main horizontal support rod, located at the bottom of the front bracket 100, and directly connected to the front wheel 200, bearing the load and steering function of the front wheel 200. The longitudinal beam 120 is the inclined support rod, rigidly connected to the crossbeam 110 (e.g., by welding or bolting), together forming the stable frame of the front bracket 100. The mounting assembly 610 can be a snap-fit ​​assembly, a bolt and nut combination, a slide rail assembly, etc., its function is to stably assemble the storage box 600 onto the longitudinal beam 120, and also realizes the detachable function of the storage box 600. Furthermore, since the mounting assembly 610 is connected to the longitudinal beam 120, the operating position is high, making it convenient to operate.

[0048] Reference Figures 7 to 11 The mounting assembly 610 includes a mounting base 630, a locking member 660, a first connecting part 640, and a second connecting part 650. The mounting base 630 includes a base plate, a first side plate 631, and a second side plate 632. The base plate is connected to the bottom wall of the first storage groove 620. The first side plate 631 and the second side plate 632 are respectively connected to opposite sides of the base plate. The longitudinal beam 120 is located between the first side plate 631 and the second side plate 632 and abuts against the base plate. The first connecting part 640 is hinged to the first side plate 631, and the second connecting part 650 is hinged to the second side plate 632. The first connecting part 640 abuts against the side of the longitudinal beam 120 away from the base plate. The second connecting part 650 is fastened to the first connecting part 640 by the locking member 660. The base plate is directly connected to the bottom wall of the first storage slot 620, providing a stable installation reference for the entire assembly. The first side plate 631 and the second side plate 632 are respectively vertically connected to the two sides of the base plate, forming a "U-shaped" frame structure, which provides lateral restraint for the longitudinal beam 120 from both sides. The first connecting part 640 and the second connecting part 650 achieve a "clamping" action on the longitudinal beam 120 by rotating around the hinge point. The first connecting part 640 abuts against the side of the longitudinal beam 120 away from the base plate, and the second connecting part 650 is fastened to the first connecting part 640 by the locking member 660, ultimately "clamping" the longitudinal beam 120 between the first connecting part 640 and the base plate.

[0049] Reference Figure 8 The locking component 660 includes a rotating shaft 661 and a limiting block 662. (Refer to...) Figure 7The first connecting part 640 is provided with a shaft hole 641 and a limiting groove 642. The rotating shaft 661 is rotatably connected in the shaft hole 641, and a retaining ring (not shown in the figure) is provided on the rotating shaft 661 to prevent the rotating shaft 661 from disengaging from the shaft hole 641. The limiting block 662 is located in the limiting groove 642. The limiting groove 642 is arc-shaped and is used to limit the rotation angle of the locking member 660. The second connecting part 650 is located on the side of the first connecting part 640 away from the bottom plate. The second connecting part 650 is provided with a clearance hole 651. The rotating shaft 661 passes through the clearance hole 651. The locking member 660 is also provided with a knob 663. The length of the knob 663 is greater than the diameter of the clearance hole 651. The second connecting part 650 is also provided with an unlocking hole 654. The unlocking hole 654 is located on one side of the clearance hole 651 and communicates with the clearance hole 651. When the knob 663 is rotated to the position of the unlocking hole 654, the second connecting part 650 can be rotated open. The shaft hole 641 is typically a circular through hole, matching the outer diameter of the rotating shaft 661. A limiting groove 642 is formed along the circumference of the shaft hole 641 (the curvature is designed according to the required rotation angle during folding, such as 90° or 120°), and the groove wall is arc-shaped to conform to the movement trajectory of the limiting block 662. One end of the rotating shaft 661 is fixed in the shaft hole 641 by a retaining ring (to prevent it from coming out), and the other end passes through the clearance hole 651 of the second connecting part 650 and is fixed to the knob 663. That is, the rotating shaft 661 has a cylindrical structure, and during assembly, it passes through the shaft hole 641 of the first connecting part 640 and forms a rotatable connection with it (i.e., the locking member 660 can rotate around the axis of the rotating shaft 661). The rotating shaft 661 is equipped with a retaining ring (annular protrusion structure). The diameter of the retaining ring is larger than the diameter of the shaft hole 641, which can lock the rotating shaft 661 from the outside of the shaft hole 641, preventing the rotating shaft 661 from disengaging from the shaft hole 641 and ensuring that the locking member 660 and the first connecting part 640 remain connected. The limiting block 662 is a protrusion structure on the locking member 660, which is embedded in the arc-shaped limiting groove 642 of the first connecting part 640 during assembly. When the locking member 660 rotates, the limiting block 662 moves along the arc-shaped trajectory of the limiting groove 642 until it abuts the end of the limiting groove 642. At this time, the limiting groove 642 stops the limiting block 662 from moving further, thus achieving precise limitation on the rotation angle of the locking member 660. The clearance hole 651 is a hole-like structure that penetrates the second connecting part 650, and its size is slightly larger than the diameter of the rotating shaft 661 of the locking member 660. When the first connecting part 640 and the second connecting part 650 are mated, the rotating shaft 661 passes through the clearance hole 651, which not only avoids structural interference between the rotating shaft 661 and the second connecting part 650, but also provides initial restraint for the second connecting part 650 through the rotating shaft 661. The unlocking hole 654 is located on one side of the clearance hole 651 and communicates with it. Its shape is adapted to the knob 663 of the locking member 660, and its core function is to provide the "unlocking position" for the knob 663.Specifically, when knob 663 is rotated, it rotates precisely to the position of unlocking hole 654. At this point, knob 663 falls into unlocking hole 654 and no longer presses against the second connecting part 650. The second connecting part 650 can then rotate upwards around the hinge point with the second side plate 632 to open, releasing the clamping on the top of the longitudinal beam 120. When knob 663 is rotated to other positions of the second connecting part 650 (other than the unlocking hole 654 position), knob 663 will "press" against the surface of the second connecting part 650, using the area difference to press the second connecting part 650 and the first connecting part 640 together, achieving a tight connection between the two, thereby fixing the longitudinal beam 120.

[0050] Reference Figure 7 and Figure 8 The knob 663 has a positioning post 664, and the second connecting part 650 has a positioning hole 652 and a guide groove 653. The guide groove 653 is used to guide the positioning post 664 to the unlocking hole 654 or to the positioning hole 652. The positioning post 664 is a protruding structure (usually columnar or block-shaped) on the knob 663, which rotates synchronously with the knob 663. Its function is to cooperate with the corresponding structure of the second connecting part 650 during rotation to achieve "operation guidance" and "position positioning". The positioning hole 652 is a hole-shaped structure adapted to the size of the positioning post 664, which is the final stopping position of the positioning post 664 when the knob 663 is in the "locked state". The guide groove 653 is a groove-shaped structure that connects the positioning hole 652 and the unlocking hole 654. Its path is consistent with the rotation trajectory of the knob 663, and it is used to guide the positioning post 664 to move along a fixed path when the knob 663 is rotated.

[0051] When knob 663 is in the unlocking hole 654 position (the second connecting part 650 can be opened), to lock it, rotate knob 663 (causing the positioning pin 664 to rotate). Under the constraint of guide groove 653, positioning pin 664 will move along the path of the groove towards positioning hole 652. Since the shape of guide groove 653 matches the rotation trajectory, positioning pin 664 will not deviate from the direction and will eventually be precisely embedded in positioning hole 652. At this time, knob 663 is just rotated to the "locking position" (knob 663 is pressed against the surface of second connecting part 650), completing the locking. When knob 663 is in the locked state (positioning pin 664 is in positioning hole 652), to unlock it, rotate knob 663 in the opposite direction. Positioning pin 664 will disengage from positioning hole 652, re-enter guide groove 653, and move along guide groove 653 towards unlocking hole 654. Guided by the guide groove 653, the positioning post 664 eventually reaches the position corresponding to the unlocking hole 654 (at which point the knob 663 falls into the unlocking hole 654), completing the unlocking process. When the positioning post 664 is embedded in the positioning hole 652, the "protrusion-recession" interaction between the two creates additional fixing force, preventing the knob 663 from accidentally rotating under conditions such as trolley bumps (avoiding automatic unlocking when not in operation). When the user rotates the knob 663, the positioning post 664 slides along the guide groove 653, producing a "smooth feel," and when it is embedded in the positioning hole 652 or reaches the unlocking hole 654, there is a "click-in feel," providing tactile feedback to the user that "the target position has been reached," eliminating the need for visual confirmation and improving operational convenience.

[0052] The process of removing the storage box 600: Refer to Figure 9 First, rotate knob 663 to the unlocking hole 654 position, refer to... Figure 10 Rotate to open the second connecting part 650, refer to Figure 11 Rotate to open the first connecting part 640, and the locking part 660 moves together with the first connecting part 640. In this way, there is no structure on the rear side of the storage area that restricts its forward movement, so the storage box 600 can be taken out.

[0053] Reference Figure 6The crossbeam 110 is curved and bends towards the rear support 300. The crossbeam 110 is not a straight structure, but rather a curved design. Compared to a straight structure, the curved structure can distribute the force over the same length, improving the structural strength and deformation resistance of the crossbeam 110, and better bearing the weight transmitted by the front wheels 200 and the impact force during pushing. The bending direction of the curved crossbeam 110 is clearly "towards the rear support 300". Considering the overall structure of the stroller, this bending direction means that the crossbeam 110 extends in an arc from the front to the rear (where the rear support 300 is located). Furthermore, the bending of the crossbeam 110 towards the rear support 300 also increases the distance between the front wheels 200 and the rear wheels 400, improving the overall stability of the stroller. When the stroller is folded, the rear support 300 is close to the front support 100, and the curved shape of the crossbeam 110 towards the rear support 300 avoids structural interference between the crossbeam 110 and the rear support 300, leaving sufficient space for folding operations.

[0054] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The storage box 600 has a second storage slot 670 for accommodating the crossbeam 110, which supports the storage box 600. The crossbeam 110 and the second storage slot 670 form a tighter structural fit through "slot wrapping," with the crossbeam 110 embedded in the second storage slot 670, resulting in a larger contact area and stronger connection stability. When the storage box 600 is connected to the longitudinal beam 120 via the mounting assembly 610, the crossbeam 110 is embedded in the second storage slot 670, and part of the weight of the storage box 600 (including the weight of the storage box 600 itself and the items stored inside) is transferred to the crossbeam 110 through the second storage slot 670. Combining the structural characteristics of the crossbeam 110 being "arc-shaped and bending towards the rear support 300", its arc design can disperse the pressure transmitted by the storage box 600, avoiding excessive local stress that could lead to deformation. At the same time, the connection point between the longitudinal beam 120 and the crossbeam 110 is further back than the position of the front wheel 200, forcing the actual installation position of the storage box 600 to move back, allowing the center of gravity of the storage box 600 to be closer to the middle of the stroller, thus preventing the stroller from tipping forward.

[0055] In the structural design of a stroller, the distribution of the center of gravity is a key factor affecting its stability, and the adjustment of the center of gravity position of the storage box 600 plays a significant role in this. From the perspective of preventing forward tilting, if the center of gravity of the storage box 600 is too far forward, the weight of itself and the items stored inside will be concentrated at the front of the stroller, causing the overall center of gravity of the stroller to shift forward. Since the front wheels 200 of a stroller are usually swivel wheels, their load-bearing capacity and ability to withstand forward tilting are relatively limited. When the weight at the front is too great, the front wheels 200 are easily overloaded, causing the front of the stroller to tilt forward, affecting not only the feel of pushing the stroller but, in severe cases, even causing the front of the stroller to touch the ground and become unable to move normally.

[0056] With the storage box 600's center of gravity closer to the middle of the stroller, the weight distribution at the front decreases, and the stroller's overall center of gravity is closer to the central area between the front and rear wheels 400 (near the connection point between the front support 100 and the rear support 300, which is also the core area for the child to sit in). At this point, the force on the front and rear wheels 400 is more balanced, and the front wheel 200 will not be overloaded due to excessive weight, effectively avoiding forward tilting caused by excessive weight at the front and ensuring stability during pushing.

[0057] At the same time, this center of gravity distribution can also improve the stability of the stroller in different scenarios. For example, when the storage box holds 600 items and the weight increases, because the center of gravity is closer to the middle, the extra weight has a smaller impact on the overall center of gravity shift and will not easily break the front and rear balance; when encountering bumps or turning during the push, it can also reduce the stroller shaking caused by the shift in the center of gravity, further enhancing the safety of use.

[0058] Reference Figure 2 The storage box 600 includes a first portion 680 located below the crossbeam 110, and a second portion flush with and above the crossbeam 110. The first portion 680 and the second portion are connected. The first portion 680 is located in a low area near the front wheel 200, close to the ground, and has a clearance groove 690 for clearing the rear wheel 400 in the folded state. The second portion is located at a relatively high position and connects to the longitudinal beam 120 above the crossbeam 110. It can serve as the main storage space and cooperate with other components (such as mounting assembly 610). The clearance groove 690 is provided in the first portion 680 of the storage box 600, and its size and shape are adapted to the structure of the rear wheel 400 (such as wheel diameter and wheel width). By adding the first part 680, the storage capacity can be expanded. Furthermore, by setting the avoidance groove 690 in the first part 680, the rear wheel 400 can be prevented from colliding or being squeezed with the first part 680 of the storage box 600, thus ensuring that the folding action can be completed smoothly.

[0059] Reference Figure 4 and Figure 5In the same vertical plane, from top to bottom, the depth of the storage box 600 gradually decreases in the front-to-back direction. Combined with the rearward tilt of the longitudinal beam 120, the upper end of the storage box 600 is further back than the lower end, allowing it to store more items. This shifts the center of gravity of the storage box 600 towards the rear, making the overall center of gravity of the stroller more centrally located. Furthermore, the rear support 300 does not protrude beyond the storage box 600, or only slightly protrudes, allowing the structure of the storage box 600 to extend as far as possible behind the front support 100. This reduces the volume percentage of the storage box 600 in front of the front support 100. For example, using the bottom wall of the second storage slot 670 as a dividing point, the volume in front of the storage box 600 accounts for approximately 50%-70% of the total volume. By placing the center of gravity of the storage box 600 closer to the middle of the stroller, the stroller's center of gravity is brought closer to the center, preventing the stroller from tipping forward.

[0060] Reference Figure 2 , Figure 4 and Figure 5 The storage box 600 has a support block 691 on its bottom surface and a handle 692 on its outer side. The support block 691 separates the bottom of the storage box 600 from the placement surface (such as the ground or tabletop), preventing direct contact between the box and the surface. When the storage box 600 is loaded with heavy objects, the support block 691 distributes the weight, reducing the risk of deformation due to uneven stress. The support block 691 prevents the bottom of the box from directly rubbing against the ground, reducing wear and extending its lifespan. Additionally, if placed in a humid environment (such as a bathroom or kitchen floor), the support block 691 elevates the box, preventing moisture from reaching the bottom and indirectly protecting the contents (such as paper documents and clothing) from dampness. (See reference) Figure 3 In the folded state, the distance between the front wheels 200 and the rear wheels 400 is very small, making it easy to tip over. The support block 691 improves the stability of the stroller in the folded state. When the storage box 600 is removed from the front support 100, it can be lifted using the handle 692 for easy transport. Additionally, when the stroller is folded, the entire stroller can also be lifted using the handle 692 for easy transport.

[0061] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A stroller, characterized in that, include: The frame includes a front support, a front wheel, a rear support, a rear wheel, a seat, and a push rod. The front support and the rear support are hinged together. The seat is mounted above the connection point between the front support and the rear support. The root of the push rod is connected to the front support and the push rod is located behind the seat. The front wheel is vertically mounted at the bottom of the front support, and the rear wheel is vertically mounted at the bottom of the rear support. A storage box is detachably connected to the front bracket and located in front of the front bracket. The storage box is provided with a first storage slot for accommodating the rear bracket. The stroller has an unfolded state and a folded state. In the unfolded state, the rear support is detached from the first storage slot, and in the folded state, the rear support is stored in the first storage slot.

2. The stroller according to claim 1, characterized in that, The front support includes a crossbeam and a longitudinal beam. The front wheel is vertically mounted on the bottom of the crossbeam, and the longitudinal beam is located in the first storage slot. The storage box is connected to the longitudinal beam via an installation assembly.

3. The stroller according to claim 2, characterized in that, The mounting assembly includes a mounting base, a locking element, a first connecting part, and a second connecting part. The mounting base includes a base plate, a first side plate, and a second side plate. The base plate is connected to the bottom wall of the first storage slot. The first side plate and the second side plate are respectively connected to opposite sides of the base plate. The longitudinal beam is located between the first side plate and the second side plate and abuts against the base plate. The first connecting part is hinged to the first side plate, and the second connecting part is hinged to the second side plate. The first connecting part abuts against the side of the longitudinal beam away from the base plate. The second connecting part is fastened to the first connecting part by the locking element.

4. The stroller according to claim 3, characterized in that, The first connecting part is provided with a shaft hole and a limiting groove. The locking member is provided with a rotating shaft and a limiting block. The rotating shaft is rotatably connected to the shaft hole, and a retaining ring is provided on the rotating shaft to prevent the rotating shaft from disengaging from the shaft hole. The limiting block is located in the limiting groove, which is arc-shaped and used to limit the rotation angle of the locking member. The second connecting part is located on the side of the first connecting part away from the base plate. The second connecting part is provided with a clearance hole, through which the rotating shaft passes. The locking member is also provided with a knob, the length of which is greater than the diameter of the clearance hole. The second connecting part is also provided with an unlocking hole, located on one side of the clearance hole and communicating with it. When the knob is rotated to the position of the unlocking hole, the second connecting part can be rotated open.

5. The stroller according to claim 4, characterized in that, The knob is provided with a positioning post, and the second connecting part is provided with a positioning hole and a guide groove. The guide groove is used to guide the positioning post to the unlocking hole or to the positioning hole.

6. The stroller according to claim 2, characterized in that, The crossbeam is arc-shaped and bends toward the rear support.

7. The stroller according to claim 2 or 6, characterized in that, The storage box is provided with a second storage slot to accommodate the crossbeam, and the crossbeam supports the storage box.

8. The stroller according to claim 2, characterized in that, The storage box includes a first part located below the crossbeam, the first part being provided with a clearance groove for avoiding the rear wheel in the folded state.

9. The stroller according to claim 1, characterized in that, In the same vertical plane, from top to bottom, the depth of the storage box gradually decreases in the front-to-back direction.

10. The stroller according to claim 1, characterized in that, The storage box has a support block on its bottom surface and a handle on its outer side.

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