Guard structure for a stroller and stroller
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HESHAN LUCAS DAILY NECESSITIES CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-14
Smart Images
Figure CN224491183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stroller technology, and in particular to a guardrail structure for a children's stroller and a children's stroller. Background Technology
[0002] In the field of stroller design, safety rails are widely used as an important protective component to ensure the safety of infants and toddlers. Currently, there are two main methods for storing stroller safety rails in the industry, but each has obvious technical shortcomings and it is difficult to balance storage convenience and space utilization.
[0003] The first method involves a folding and storage arrangement where the guardrail and push rod are connected by a rotating mechanism. The guardrail is directly connected to the stroller push rod via a rotating structure. When storing, the guardrail is rotated around the connection point until it fits snugly against the push rod or stroller body, and then folds together with the push rod. However, this design has significant limitations: firstly, the guardrail remains connected to the push rod in the folded state, which mechanically interferes with the push rod's extension and folding stroke, preventing it from fully retracting or folding, thus affecting the overall compactness of the stroller's folding mechanism; secondly, the guardrail's structure still protrudes outwards after folding, preventing it from fully fitting snugly against the push rod or stroller body, resulting in a larger overall space occupied after storage, which is inconvenient for transportation, storage, or carrying.
[0004] The second method involves detachable storage of the guardrail and the stroller frame: the guardrail is detachably connected to the stroller frame via clips, pins, or other mechanisms. To store it, the guardrail must be completely removed from the frame and stored separately. While this method avoids interference with the folding of the push handle, the process is significantly inconvenient: disassembly requires releasing the locks at multiple connection points one by one (such as pressing the clips and pulling out the pins), and reassembly requires realigning the connections and locking them again. The process is cumbersome and time-consuming, and the disassembled guardrail is easily lost when stored separately, affecting subsequent use.
[0005] In summary, the existing storage methods for stroller guardrails present a contradiction between convenience and space optimization. There is an urgent need for a technical solution that can both avoid interfering with the folding of the push rod and reduce storage space, while simplifying disassembly and installation. Utility Model Content
[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a guardrail structure for children's strollers that reduces storage space and simplifies disassembly and installation.
[0007] This utility model also proposes a children's stroller having the above-mentioned guardrail structure.
[0008] According to a first aspect embodiment of the present invention, a guardrail structure for a child stroller includes:
[0009] A circular guardrail, wherein the circular guardrail is provided with a connecting component for detachable connection with the push bar of a stroller;
[0010] The connecting rod has one end rotatably connected to the ring guardrail and the other end rotatably connected to the seat of the stroller.
[0011] The connecting rod and the connecting assembly are located on opposite sides of the annular guardrail. The guardrail structure has a first state and a second state. In the first state, the connecting assembly is connected to the push rod of the stroller, and the connecting rod supports the annular guardrail in the vertical direction, keeping the annular guardrail horizontal. In the second state, the connecting assembly disconnects the annular guardrail from the push rod of the stroller, and the guardrail structure can fold towards the connection point between the connecting rod and the seat of the stroller.
[0012] The guardrail structure for a child stroller according to the present utility model embodiment has at least the following beneficial effects: the ring guardrail and the push rod are detachably connected by a connecting component, and the ring guardrail and the seat are rotatably connected by a connecting rod. When storing, the ring guardrail can be removed from the push rod, and the guardrail structure is folded toward the connection point between the connecting rod and the seat, so that the guardrail structure fits the stroller body better and the overall space occupied after storage is smaller. Only the connecting component needs to be disassembled or installed, which simplifies the disassembly and installation operations.
[0013] According to some embodiments of the present invention, the connecting assembly includes a connecting sleeve and a connecting head, the connecting sleeve being sleeved on the push rod, and the connecting head being detachably connected to the connecting sleeve.
[0014] According to some embodiments of the present invention, the connecting sleeve is provided with a first sliding groove, and the connecting head is provided with a slide rail that cooperates with the first sliding groove.
[0015] According to some embodiments of the present invention, the connecting assembly further includes a button and a spring. The connecting sleeve is provided with a mounting hole for accommodating the button. The side wall of the mounting hole is provided with a guide groove communicating with the mounting hole. The button is provided with a hook located in the guide groove. The hook is used to abut against the blind end of the guide groove to limit the travel of the button. The spring abuts against the button and the bottom wall of the mounting hole. The connecting head is provided with a limiting hole that cooperates with the button.
[0016] According to some embodiments of the present invention, the button is provided with a cantilever, one end of which is fixed to the button body, and the hook is provided at the other end of the cantilever.
[0017] According to some embodiments of the present invention, the circular guardrail includes two railings, both of which are arc-shaped. The connecting rod is provided with a first sleeve, and the connecting head is provided with a second sleeve. One end of the two railings is inserted into the first sleeve, and the other end is inserted into the second sleeve.
[0018] According to some embodiments of the present invention, the two railings located inside the first sleeve are interlocked and fixed by screws, and the two railings can rotate relative to the first sleeve.
[0019] According to some embodiments of the present invention, each of the two railings located inside the second sleeve is connected to the second sleeve via a rotating member. The rotating member is fixedly connected to the second sleeve and rotatably connected to the railing.
[0020] According to some embodiments of this utility model, the rotating member is provided with a sliding protrusion, and the second sleeve is provided with a second sliding groove. The sliding protrusion is connected to the second sliding groove, and the rotating member is connected to the second sleeve by screws. The rotating member is provided with a first hole and a second hole. The second hole is located on the side of the first hole away from the railing. The diameter of the first hole is smaller than the diameter of the second hole. The railing is provided with a limiting part and a connecting part. The diameter of the limiting part is larger than the diameter of the connecting part. The limiting part is located in the second hole, and the connecting part is located in the first hole. The diameter of the first hole is smaller than the diameter of the limiting part and larger than the diameter of the connecting part. The side of the rotating member is provided with an opening connecting the first hole and the second hole. The width of the opening at the first hole matches the diameter of the connecting part, and the width of the opening at the second hole matches the diameter of the limiting part.
[0021] The stroller according to a second aspect of the present invention includes the guardrail structure of the first aspect of the present invention.
[0022] The stroller according to the embodiments of the present utility model has at least the following beneficial effects: by adopting the guardrail structure of the first aspect embodiment of the present utility model, the storage space can be reduced and the disassembly and installation operations can be simplified.
[0023] 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
[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0025] Figure 1 This is a schematic diagram of the stroller in the unfolded state according to an embodiment of the present invention;
[0026] Figure 2 for Figure 1 A schematic diagram of another direction of the stroller is shown (the circular guardrail is disconnected from the push bar).
[0027] Figure 3 Bit Figure 1 The illustration shows a stroller in a folded state;
[0028] Figure 4 This is a schematic diagram of the installation of the guardrail structure according to an embodiment of the present utility model;
[0029] Figure 5 for Figure 4 The exploded view of the guardrail structure is shown.
[0030] Figure 6 for Figure 5 A schematic diagram of the connecting sleeve is shown;
[0031] Figure 7 for Figure 5 A schematic diagram of the button shown;
[0032] Figure 8 A schematic diagram of an explosion in one direction of a circular guardrail;
[0033] Figure 9 for Figure 8 The enlarged view at point A is shown;
[0034] Figure 10 A schematic diagram of an explosion from another direction of the circular guardrail;
[0035] Figure 11 The stroller folded up after the storage box is removed;
[0036] Figure 12 A schematic diagram showing the installation of limiting protrusions on the longitudinal beam;
[0037] Figure 13 This is a schematic diagram of another embodiment of the connector;
[0038] Figure 14 for Figure 11 A schematic diagram showing the engagement of the connector and the limiting protrusion in the folded state.
[0039] Figure label:
[0040] 100. Front bracket; 110. Mounting ring; 120. Limiting protrusion; 200. Front wheel; 300. Rear bracket; 400. Rear wheel; 500. Push rod; 600. Storage box; 700. Seat cushion; 800. Circular guardrail; 810. Connecting rod; 811. First sleeve; 820. Connecting assembly; 821. Connecting sleeve; 822. Connector; 823. First slide groove; 824. Slide rail; 825. Button; 826. Spring; 827. Safety pin 828. Mounting hole; 829. Guide groove; 830. Limiting hole; 831. Hook; 832. Cantilever; 833. Second sleeve; 833. Locking groove; 840. Railing; 841. First insertion hole; 842. Insertion part; 843. Connecting piece; 844. Second insertion hole; 845. Rotating part; 846. Sliding protrusion; 847. First hole; 848. Second hole; 849. Limiting part; 850. Connecting part; 851. Opening; 900. Backrest. Detailed Implementation
[0041] 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.
[0042] 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.
[0043] 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.
[0044] 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.
[0045] Reference Figure 1 and Figure 2This utility model embodiment of the stroller includes a front support 100, front wheels 200, a rear support 300, rear wheels 400, a push rod 500, a storage box 600, a seat cushion 700, a circular guardrail 800, and a backrest 900. The front support 100 and the rear support 300 form the triangular basic frame of the stroller. The front support 100 and the rear support 300 are rigidly connected by a connection point located at the midpoint in the front-to-back direction (e.g., the center from the front to the rear of the stroller) and the midpoint in the vertical direction (e.g., the geometric center of the height from the ground and the height of the frame). The front wheels 200 are vertically mounted on the bottom of the front support 100 and typically employ a swivel wheel structure, serving both steering and load-bearing functions. The rear wheels 400 are vertically mounted on the bottom of the rear support 300 and typically employ a fixed wheel structure, primarily serving a load-bearing function. The storage box 600 is mounted on the front side of the stroller and directly connected to the front support 100 (located above the front wheels 200).
[0046] 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.
[0047] The front support 100 and rear support 300 are hinged, unlike a rigid connection. This hinged structure allows for relative rotation between them, providing a basis for the stroller's subsequent folding action. 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 clips, 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 for accommodating the rear support 300. The stroller has an unfolded state and a folded state; the unfolded state is the normal usage state of the stroller. In the unfolded state, the rear support 300 detaches from the first storage slot, and the front support 100 and rear support 300 unfold to a suitable angle through the hinge point, together forming the stroller's support frame to meet the needs of children riding and pushing. The folded state refers to the stroller's storage or carrying position. In the folded 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 of the storage box 600, thus folding the stroller. After folding, the rear support 300 will not protrude from the storage box 600, or will only protrude slightly, which can significantly reduce the overall size of the stroller, making it easy to store (such as in a corner of the home) or carry (such as in the trunk of a car).
[0048] Reference Figure 1 , Figure 2 and Figure 4 The rear of the circular guardrail 800 is connected to the push rod 500, and the front is connected to the seat cushion 700 via a connecting rod 810. Specifically, the connecting rod 810 and the push rod 500 are located on opposite sides of the seat cushion 700. The lower end of the connecting rod 810 is connected to the push rod 500 on one side of the circular guardrail 800 and to the upper end of the connecting rod 810 on the other side. The circular guardrail 800 and the connecting rod 810 are the main components of the guardrail structure. The connecting rod 810 can also prevent children from sliding down the space between the seat cushion 700 and the circular guardrail 800.
[0049] Reference Figure 1 and Figure 4The circular guardrail 800 is equipped with a connecting component 820, which is located on one side of the circular guardrail 800. Its function is to provide a detachable connection (such as a buckle, plug-in, or locking structure) with the push rod 500 of the stroller, serving as the "interface" between the guardrail and the stroller body. The connecting rod 810 and the connecting component 820 are located on opposite sides of the circular guardrail 800. The guardrail structure has a first state and a second state. In the first state, the connecting component 820 remains connected to the push rod 500. At this time, the connecting rod 810 provides vertical support to the circular guardrail 800 (similar to a "bracket"), keeping the circular guardrail 800 horizontal. This state is the normal operating state of the guardrail; the horizontal circular guardrail 800 effectively protects children from falls. In the second state, the connection between the connecting component 820 and the push rod 500 is disconnected. At this time, the circular guardrail 800 is only connected to the seat cushion 700 via the connecting rod 810. Since the horizontal constraint of the push rod 500 is no longer present, the guardrail can fold and retract towards the connection point between the connecting rod 810 and the seat cushion 700. That is, the guardrail no longer relies on the push rod 500 for fixation, but instead rotates and folds around the connection point between the connecting rod 810 and the seat cushion 700, achieving the effect of storage or folding. When folding, simply disconnecting the connection on the push rod 500 side allows folding around the connection point of the connecting rod 810 on the seat cushion 700 side, without completely disassembling the guardrail. This also eliminates the constraint of the push rod 500, reducing interference with the overall folding of the trolley and balancing ease of operation with optimized storage space.
[0050] Reference Figure 2The connecting assembly 820 includes a connecting sleeve 821 and a connecting head 822. The connecting sleeve 821 is fitted onto the push rod 500, and the connecting head 822 is detachably connected to the connecting sleeve 821. The connecting sleeve 821 has a hollow structure and can be directly fitted onto the outside of the push rod 500, forming a stable connection with the push rod 500. The connecting sleeve 821 is the "fixed end" of the connecting assembly 820, and its function is to provide a stable mounting base for the connecting head 822 by wrapping around the push rod 500. The connecting head 822 is the "moving end" of the connecting assembly 820. There is a separable locking structure (such as a buckle, thread, pin, etc.) between the connecting head 822 and the connecting sleeve 821. By releasing the lock, the two can be separated, thereby achieving the disconnection of the ring guardrail 800 from the push rod 500. The connector 822 and the connecting sleeve 821 are assembled. At this time, the connecting sleeve 821 provides lateral support by wrapping around the push rod 500, while the connector 822 transmits the force of the ring guardrail 800 to the push rod 500. Working together, the guardrail is securely fixed in the preset position of the push rod 500, ensuring that the guardrail remains level and undisturbed during use, meeting the safety requirements for infants riding in strollers. When the stroller needs to be stored, the connector 822 is pulled out or unscrewed from the connecting sleeve 821 by operating the unlocking mechanism of the connector 822 and the connecting sleeve 821 (such as pressing the buckle button, rotating the screw to unlock, etc.). At this time, the ring guardrail 800 is only connected to the seat cushion 700 through the connecting rod 810 on the other side. Without the horizontal constraint of the push rod 500, it can be folded towards the connection point between the connecting rod 810 and the seat cushion 700, achieving compact storage.
[0051] Reference Figure 2 and Figure 6 The connecting sleeve 821 is provided with a first groove 823, that is, the connecting sleeve 821 has a groove-shaped track structure. The connecting head 822 is provided with a slide rail 824 that mates with the first groove 823, that is, the connecting head 822 has a raised track structure, and the size and shape of the slide rail 824 are adapted to the first groove 823. During installation, the slide rail 824 on the connecting head 822 is aligned with the first groove 823 of the connecting sleeve 821, and the slide rail 824 is fully embedded in the first groove 823 by sliding along the direction of the first groove 823 (sliding in longitudinally), thereby locking the connecting head 822 and the connecting sleeve 821. During disassembly, the connecting head 822 is slid in the opposite direction to allow the slide rail 824 to exit from the first groove 823, thus separating the two.
[0052] Reference Figures 5 to 7The connecting assembly 820 also includes a button 825 and a spring 826. The connecting sleeve 821 has a mounting hole 827 for accommodating the button 825. The mounting hole 827 serves as a receiving space for the button 825, which is assembled within the mounting hole 827 and can move axially (i.e., in the pressing direction) within the mounting hole 827. The side wall of the mounting hole 827 has a guide groove 828 communicating with the mounting hole 827. The end of the guide groove 828 near the connector 822 is closed. The button 825 has a hook 830 located within the guide groove 828. The hook 830 can slide along the guide groove 828. When the hook 830 abuts against the blind end, the button 825 cannot move further, thus limiting the maximum travel of the button 825 (preventing the button 825 from falling out of the mounting hole 827). Spring 826 abuts against the bottom wall of button 825 and mounting hole 827. Compressed between button 825 and the bottom wall of mounting hole 827, spring 826 exerts an outward elastic force on button 825 under its natural state, keeping button 825 protruding from mounting hole 827. Connector 822 has a limiting hole 829 that mates with button 825. When the slide rail 824 of connector 822 slides into the first slide groove 823 of connecting sleeve 821 and is in place, the limiting hole 829 on connector 822 is precisely aligned with button 825 inside mounting hole 827 of connecting sleeve 821. At this time, the elastic force of spring 826 pushes button 825 outward, and the end of button 825 embeds into limiting hole 829, forming a mechanical lock. The engagement of button 825 with limiting hole 829 restricts the relative sliding of connector 822 and connecting sleeve 821, ensuring a stable connection (corresponding to the first state of the ring guardrail 800, i.e., the usage state). When button 825 is pressed manually, it moves inward toward the mounting hole 827 against the spring force of spring 826, and its end exits from the limiting hole 829 of connector 822. At this time, the sliding restriction between connector 822 and connecting sleeve 821 is released, and the slide rail 824 of connector 822 can slide out of the first slide groove 823 of connecting sleeve 821, realizing the separation of the two (corresponding to the ring guardrail 800 switching to the second state, i.e., the folded state).
[0053] Reference Figure 7 The button 825 has a cantilever 831. One end of the cantilever 831 is fixed to the main body of the button 825, and a hook 830 is provided at the other end of the cantilever 831. One end of the cantilever 831 is fixedly connected to the main body of the button 825 (it can be integrally molded, such as being processed simultaneously during injection molding, or fixed by welding, etc.), while the other end is freely suspended, and the hook 830 is provided at this suspended end (i.e., the hook 830 is located at the end of the cantilever 831). The cantilever 831 has a certain elastic deformation capacity. When installing and removing the button 825, lateral pressure causes the hook 830 to retract into the button 825, avoiding interference with the mounting hole 827, thereby allowing the button 825 to enter into or exit the mounting hole 827.
[0054] Reference Figure 5 , Figure 8 and Figure 10 The circular guardrail 800 includes two railings 840, both of which are arc-shaped. A connecting rod 810 has a first sleeve 811, and a connecting head 822 has a second sleeve 832. One end of each railing 840 is inserted into the first sleeve 811, and the other end is inserted into the second sleeve 832. The circular guardrail 800 uses the two arc-shaped railings 840 as its core supporting components, together forming a "circular" structure. The two railings 840, when combined, form a closed or semi-closed circular outline to provide surrounding protection for children. The first sleeve 811 is a hollow tubular structure, serving as one connecting fulcrum to support one end of each railing 840. The second sleeve 832 is also a hollow tubular structure, serving as the other connecting fulcrum to support the other end of each railing 840. The two ends of the two railings 840 are inserted into corresponding sleeves, that is, one end of each railing 840 is inserted into the first sleeve 811 and the other end into the second sleeve 832. This "insertion-type" connection secures the railing 840 to the connecting rod 810 and the connector 822. The sleeves, as the fixed ends of the railings 840, utilize an "enclosed" design, which, compared to direct welding or bolting, disperses the lateral tensile force on the railings 840 (such as stress from a baby climbing or a stroller bumping), reducing the risk of breakage. The "insertion-type" assembly of the railings 840 and sleeves requires no tools; users simply align the two ends of the railing 840 with the sleeves and insert them to complete the assembly. The operation is quick and easy, with a low learning curve, making it especially suitable for parents with infants to quickly install or remove the railings.
[0055] Reference Figure 5 , Figure 8 and Figure 10Two railings 840 located within the first sleeve 811 are interlocked and fixed with screws, allowing them to rotate relative to the first sleeve 811. Specifically, one railing 840 has a first insertion hole 841, and the other railing 840 has an insertion part 842. The insertion part 842 is inserted into the first insertion hole 841, and then a screw is used to radially pass through the first insertion hole 841 and the insertion part 842, i.e., the screw passes radially through the side wall of the first insertion hole 841 and the insertion part 842, rigidly connecting the two railings 840 into one unit. This radial fixing method effectively limits the relative displacement of the two railings 840 in the circumferential direction (rotation around the axis) and radial direction (wobbling perpendicular to the axis), ensuring connection strength. Additionally, a connecting piece 843, which can be made of metal, can be provided to further enhance the connection strength. The insertion part 842 has a second insertion hole 844, into which the connecting piece 843 is inserted. The screw passes through both railing posts 840 and also through the connecting piece 843, thus locking the two railing posts 840 and the connecting piece 843 together. Since the railing posts 840 are often made of plastic, they are prone to deformation and wear when used with the screw. By adding the metal connecting piece 843, the screw force can be withstood, reducing deformation and wear of the railing posts 840 and improving overall strength. Preferably, there are two or more screws along the length of the connecting piece 843 to maintain the relative position of the connecting piece 843 and the railing posts 840.
[0056] Reference Figure 5 , Figures 8 to 10 Two railings 840 located within the second sleeve 832 are each connected to the second sleeve 832 via a rotating component 845. The rotating component 845 is fixedly connected to the second sleeve 832 and rotatably connected to the railing 840. The rotating component 845 and the second sleeve 832 are fixedly connected (e.g., by welding, screw locking, interference fit, etc.), meaning their relative positions are completely fixed and will not move or rotate relative to each other. The rotating component 845 and the railing 840 are rotatably connected (e.g., by shaft hole fit, bearing connection, etc.), meaning the railing 840 can rotate freely around the axis of the rotating component 845, and their relative angle can change. When the connector 822 engages with the connecting sleeve 821, the connecting sleeve 821 remains fixed, while the connector 822 changes angle as the annular guardrail 800 rotates. By using the rotating component 845, the connector 822 can better adjust its engagement angle with the connecting sleeve 821, facilitating installation and disassembly. In addition, when folded, the angle between connector 822 and ring guardrail 800 can be adjusted to allow connector 822 to better fit the main body of the stroller and reduce the overall space occupied.
[0057] The rotating component 845 has a sliding protrusion 846, and the second sleeve 832 has a second sliding groove (not shown in the figure). The sliding protrusion 846 connects to the second sliding groove, and the rotating component 845 is connected to the second sleeve 832 by screws. The rotating component 845 has a "sliding protrusion 846", and the second sleeve 832 has a "second sliding groove", and the two are interlocked. This is a pre-positioning structure used to quickly align the positions of the rotating component 845 and the second sleeve 832 during assembly, ensuring the accuracy of subsequent screw alignment with the threaded hole. The sliding protrusion 846 guides the rotating component 845 into the preset installation position during the sliding process, avoiding assembly deviation. After sliding positioning, the rotating component 845 and the second sleeve 832 are rigidly connected by screws (the screws pass radially through the connection holes of the two), completely locking the relative positions and ensuring that the rotating component 845 and the second sleeve 832 do not move or wobble relative to each other during use, thus enhancing the overall structural stability.
[0058] The rotating component 845 has a first hole 847 and a second hole 848. The second hole 848 is located on the side of the first hole 847 away from the railing 840, that is, the second hole 848 is close to the interior depth of the rotating component 845. The diameter of the first hole 847 is smaller than the diameter of the second hole 848, forming a "stepped hole" structure. The railing 840 has a limiting part 849 and a connecting part 850. The diameter of the limiting part 849 is larger than the diameter of the connecting part 850, and the two are coaxial "stepped shaft" structures. The limiting part 849 is located inside the second hole 848, and the connecting part 850 is located inside the first hole 847. The diameter of the first hole 847 is smaller than the diameter of the limiting part 849 and larger than the diameter of the connecting part 850, preventing the limiting part 849 from passing through the first hole 847, thereby restricting the axial movement of the railing 840 (preventing the railing 840 from falling out of the rotating component 845). The rotating component 845 has an opening 851 on its side that connects the first hole 847 and the second hole 848. The width of the opening 851 at the first hole 847 matches the diameter of the connecting part 850, and the width of the opening 851 at the second hole 848 matches the diameter of the limiting part 849. This design facilitates the assembly of the railing 840 and the rotating component 845. It eliminates the need to "insert" the railing 840 axially into the hole of the rotating component 845. Instead, the connecting part 850 and the limiting part 849 of the railing 840 are inserted into the first hole 847 and the second hole 848 respectively through the side opening 851 (the matching width of the opening 851 with the diameter of the component ensures that the railing 840 will not come out after being inserted), significantly simplifying the assembly process.
[0059] Reference Figure 11After the storage box 600 is detached from the front support 100, the storage method of the ring guardrail 800 can be changed to further reduce the overall space occupied. Specifically, the ring guardrail 800 rotates around the hinge point between the connecting rod 810 and the ring guardrail 800, and then the connecting rod 810 swings around the hinge point between the seat cushion 700 and the connecting rod 810, moving closer to the push rod 500. This ultimately positions the ring guardrail 800 in front of the front support 100, with the seat cushion 700 inserted through the hollow area of the ring guardrail 800. Furthermore, the backrest 900 can remain attached to the ring guardrail 800 without being removed. Using the aforementioned folding method, the backrest 900 ultimately sits in front of the ring guardrail 800 and directly below the seat cushion 700. This effectively utilizes the empty space created by the seat cushion 700 and the front support 100, reducing the overall space occupied.
[0060] Reference Figure 12 A mounting ring 110 is fitted onto the front bracket 100, and a limit protrusion 120 is provided on the mounting ring 110. (Refer to...) Figure 13 The connector 822 has a locking slot 833. (See reference...) Figure 14 When the connector 822 is detached from the connector sleeve 821, the connector 822 follows the ring guardrail 800 and flips forward, eventually reaching the bottom of the seat cushion 700 and the front side of the front bracket 100. The limiting protrusion 120 of the mounting ring 110 is inserted into the locking groove 833 of the connector 822, thereby keeping the ring guardrail 800 and the front bracket 100 relatively fixed, which helps to maintain the overall stability.
[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 guardrail structure for a child stroller, characterized in that, include: A circular guardrail, wherein the circular guardrail is provided with a connecting component for detachable connection with the push bar of a stroller; The connecting rod has one end rotatably connected to the ring guardrail and the other end rotatably connected to the seat of the stroller. The connecting rod and the connecting assembly are located on opposite sides of the annular guardrail. The guardrail structure has a first state and a second state. In the first state, the connecting assembly is connected to the push rod of the stroller, and the connecting rod supports the annular guardrail in the vertical direction, keeping the annular guardrail horizontal. In the second state, the connecting assembly disconnects the annular guardrail from the push rod of the stroller, and the guardrail structure can fold towards the connection point between the connecting rod and the seat of the stroller.
2. The guardrail structure for a child stroller according to claim 1, characterized in that, The connecting assembly includes a connecting sleeve and a connecting head. The connecting sleeve is fitted onto the push rod, and the connecting head is detachably connected to the connecting sleeve.
3. The guardrail structure for a child stroller according to claim 2, characterized in that, The connecting sleeve is provided with a first sliding groove, and the connecting head is provided with a sliding rail that mates with the first sliding groove.
4. The guardrail structure for a child stroller according to claim 2, characterized in that, The connecting assembly further includes a button and a spring. The connecting sleeve is provided with a mounting hole for accommodating the button. The side wall of the mounting hole is provided with a guide groove communicating with the mounting hole. The button is provided with a hook located in the guide groove. The hook is used to abut against the blind end of the guide groove to limit the travel of the button. The spring abuts against the bottom wall of the button and the mounting hole. The connecting head is provided with a limiting hole that mates with the button.
5. The guardrail structure for a child stroller according to claim 4, characterized in that, The button is provided with a cantilever, one end of which is fixed to the button body, and the hook is provided at the other end of the cantilever.
6. The guardrail structure for a child stroller according to claim 2, characterized in that, The circular guardrail includes two railings, both of which are arc-shaped. The connecting rod is provided with a first sleeve, and the connecting head is provided with a second sleeve. One end of each railing is inserted into the first sleeve, and the other end is inserted into the second sleeve.
7. The guardrail structure for a child stroller according to claim 6, characterized in that, The two railings located inside the first sleeve are interlocked and fixed with screws, and the two railings can rotate relative to the first sleeve.
8. The guardrail structure for a child stroller according to claim 6, characterized in that, The two railings located inside the second sleeve are each connected to the second sleeve via a rotating component. The rotating component is fixedly connected to the second sleeve and rotatably connected to the railing.
9. The guardrail structure for a child stroller according to claim 8, characterized in that, The rotating component has a sliding protrusion, and the second sleeve has a second sliding groove. The sliding protrusion is connected to the second sliding groove, and the rotating component is connected to the second sleeve by screws. The rotating component has a first hole and a second hole. The second hole is located on the side of the first hole away from the railing, and the diameter of the first hole is smaller than the diameter of the second hole. The railing has a limiting part and a connecting part. The diameter of the limiting part is larger than the diameter of the connecting part. The limiting part is located in the second hole, and the connecting part is located in the first hole. The diameter of the first hole is smaller than the diameter of the limiting part and larger than the diameter of the connecting part. The side of the rotating component has an opening connecting the first hole and the second hole. The width of the opening at the first hole matches the diameter of the connecting part, and the width of the opening at the second hole matches the diameter of the limiting part.
10. A stroller, characterized in that, Includes the guardrail structure as described in any one of claims 1 to 9.