A folding structure for a stroller

Abstract

The utility model relates to the technical field of baby carriage, specifically relates to a baby carriage folding structure, including the front support structure, rear support structure and upper support structure of relative rotation setting, the upper support structure is rotatably connected with first link rod, the front support structure is rotatably connected with second link rod, the rear support structure is rotatably connected with third link rod, the third link rod rotatably connects in second link rod, the second link rod with anyone rotatably connected in the third link rod first link rod, first link rod, second link rod with third link rod all are in baby carriage folding structure inside. The application is with simple structure stability and smooth realization baby carriage folding structure's folding, and the structure cost is low, and the risk of failure reduces.

Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, specifically to a folding structure for children's vehicles. Background Technology

[0002] Currently, most existing stroller folding structures rely on multi-link linkages to achieve the folding action. During the folding process, the connection between various components is easily affected by assembly precision and wear and tear from long-term use, which may result in stuttering or disjointed operation. Some structures require manual adjustment of the positions of multiple links to complete the folding, making the operation cumbersome and failing to achieve a smoother folding experience, thus falling short of the requirement for "smooth folding."

[0003] Existing folding structures require numerous linkages and hinges, which not only increases the cost of raw material procurement but also places higher demands on component processing precision and assembly technology. This leads to increased manpower and time investment in the production process, resulting in higher overall manufacturing costs and making it difficult to achieve the design goal of "low cost," thus affecting the product's cost-effectiveness to some extent.

[0004] The structural design with multiple hinge points and multiple connecting parts results in a relatively large number of potential failure points in existing stroller folding structures. During long-term use, the hinges are prone to wear and tear, leading to increased gaps and potential misalignment of the connecting parts, which in turn affects the normal operation of the folding mechanism. Although regular maintenance can reduce the risk, it is still impossible to effectively reduce the possibility of folding-related failures from the structural design alone, which does not meet the requirement of "reducing failure risk".

[0005] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a folding structure for a children's stroller.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A folding structure for a stroller includes a front support structure, a rear support structure, and an upper support structure that are arranged to rotate relative to each other.

[0009] The upper support structure is rotatably connected to a first connecting rod, the front support structure is rotatably connected to a second connecting rod, and the rear support structure is rotatably connected to a third connecting rod. The third connecting rod is rotatably connected to the second connecting rod, and either the second connecting rod or the third connecting rod is rotatably connected to the first connecting rod.

[0010] The first linkage, the second linkage, and the third linkage are all located inside the folding structure of the stroller;

[0011] During the process of switching the stroller's folding structure from the unfolded state to the folded state, the upper support structure rotates and drives the first connecting rod to move. The first connecting rod drives the second connecting rod and the third connecting rod to rotate towards each other and move closer. The second connecting rod and the third connecting rod cooperate to drive the front support structure and the rear support structure to rotate towards each other and move closer.

[0012] The front support structure may include front rollers, and the rear support structure may include rear rollers. This is a standard configuration and will not be elaborated upon here.

[0013] The upper support structure can be the push handle structure in a stroller. When the push handle structure can be reversed, the upper support structure can be the support part of the seat in the stroller. The upper support structure can also include both the push handle structure and the support part at the same time. There are no specific restrictions.

[0014] The locking and unlocking of the front support structure, rear support structure and upper support structure are not the subject of this application. Please refer to the existing technology, and they will not be elaborated here.

[0015] During the folding process of the stroller's folding structure, the user first rotates the upper support structure downwards. This causes the first connecting rod to move downwards, resulting in the second and third connecting rods, whose ends closest to the first connecting rod, moving downwards. The ends of the second and third connecting rods furthest from the first connecting rod then cause the front and rear support structures to rotate towards each other. Based on this, this application achieves a simple, stable, and smooth folding mechanism for the stroller, with low structural cost and reduced risk of malfunction. Furthermore, the first, second, and third connecting rods are all located inside the stroller's folding structure; they are essentially built-in structures. During use, these three components are not exposed to the external environment, reducing the risk of them scraping against other structures.

[0016] Preferably, the first, second, and third connecting rods are all formed by sequentially connecting multiple connecting segments, and there is an included angle between any two adjacent connecting segments, which can improve the structural strength of the first, second, and third connecting rods.

[0017] In summary, this application achieves smooth folding of the stroller's folding structure with fewer linkages, resulting in fewer hinge points and fewer potential failure points. This reduces overall production costs and failure risks, especially since all linkages are built-in, further minimizing failure risks.

[0018] In a further technical solution, both the rear support structure and the upper support structure rotate around a first axis, and the front support structure rotates around a second axis, which is parallel to the first axis. In this case, the front support structure can be rotatably mounted on the rear support structure. The end of the front support structure does not need to be located at the connection point between the rear support structure and the upper support structure, thus reducing the structural complexity in that connection area. One effect is that it can reduce the width of this area. If the end of the front support structure is also located in this area, it will increase the width of that area, resulting in an increase in the width of the stroller's folding structure. The width direction of the stroller's folding structure can be the distribution direction of the two front rollers in the front support structure shown in the attached diagram.

[0019] In a further technical solution, the third linkage is rotatably connected to the first linkage.

[0020] During the folding process of the stroller's folding structure, the user first rotates the upper support structure downwards, at which point the upper support structure moves closer to the rear support structure. Based on this, in the second and third linkages, the third linkage is rotatably connected to the first linkage. Compared to a rotatable connection between the second and first linkages, this reduces the length of the first linkage, lowers structural costs, and, under the same conditions, increases the structural strength of the first linkage. Furthermore, the area required for the first linkage to move can be reduced, facilitating the structural layout of the stroller's folding structure.

[0021] Further technical solutions also include a seat plate structure and a backrest structure that are rotatably connected;

[0022] The seat plate structure is rotatably connected to the front support structure;

[0023] The seat structure is slidably provided with a locking member, the locking member is provided with a positioning recess, and the backrest structure is formed with a positioning protrusion; in the unfolded state of the stroller's folding structure, the positioning protrusion extends into the positioning recess to restrict the relative rotation of the seat structure and the backrest structure.

[0024] The seat plate structure is slidably provided with an unlocking component; during the process of the stroller folding structure switching from the unfolded state to the folded state, the unlocking component pushes the locking component so that the positioning recess gradually disengages from the positioning protrusion.

[0025] A reset member is provided between the seat plate structure and the locking member, and the reset member ensures that the locking member always has a tendency to move toward the positioning protrusion.

[0026] The seat structure may include a support frame and a seat plate, and the backrest structure may include a frame and a backrest. The seat plate and backrest may also be replaced by a fabric cover, which is an existing design and will not be described in detail here. The seat plate structure and the backrest structure may form the aforementioned seat cushion portion, or the two and the upper support structure may form the aforementioned seat cushion portion; there are no restrictions on this.

[0027] The seat structure is rotatably connected to the front support structure, providing support for the seat structure, which is foldable. The backrest structure is rotatably located on the seat structure, rather than on the rear support structure, facilitating the installation and removal of the seat cushion.

[0028] When the stroller is unfolded with its folding structure folded, the locking mechanism is preferably designed to slide vertically for smoother movement. The specific implementation method is not limited; for example, it can utilize a slide rail. The locking mechanism may have multiple positioning recesses and multiple positioning protrusions, with no restrictions on their number or distribution.

[0029] One of the prerequisites for a stroller's folding structure to achieve complete folding is that the seat structure and the backrest structure can rotate relative to each other. Specifically, the backrest structure can be movable to increase the degree of folding of the stroller's folding structure, while the rotation of the seat structure is restricted by the front support structure. The position of the seat structure after folding is shown in the attached diagram.

[0030] One prerequisite for the stable unfolding of the stroller's folding structure is the stability of the backrest structure, achieved by the insertion of the positioning protrusion into the positioning recess to form an assembled state. The unlocking component is used to unlock the backrest structure. The unlocking component pushes the locking component, causing the locking component to move downwards (for example), gradually moving the positioning recess away from the positioning protrusion, thus unlocking the backrest. The main body of the unlocking component can be a long rod structure that can move diagonally upwards to push the locking component vertically downwards. The conversion of the movement direction between different structures can be achieved by using a conversion ramp, which is an existing direction conversion setting and will not be elaborated here.

[0031] The reset element can be a compression spring. How the compression spring achieves structural reset is an existing method and will not be elaborated here.

[0032] A groove can be provided on one end of the seat plate structure. The locking part, the positioning protrusion when locked, the reset part, and the unlocking part can be placed in the groove to realize the integrated structure, which facilitates the structural layout and effectively realizes the above-mentioned locking backrest structure and other functions.

[0033] A further technical solution also includes a linkage, wherein the first end of the linkage is rotatably connected to the upper support structure, the second end of the linkage is rotatably connected to the rear support structure, and the third end of the linkage is rotatably connected to the unlocking component;

[0034] During the process of switching the stroller's folding structure from the unfolded state to the folded state, the upper support structure rotates and causes the unlocking member to move relative to the seat plate structure through the linkage, so that the unlocking member pushes the locking member to unlock the backrest structure.

[0035] During the folding process of the stroller's folding structure, the upper support structure rotates downwards, and the first end of the linkage moves downwards with the upper support structure (described in the vertical direction). The rear support structure and the front support structure move closer to each other, and the second end of the linkage moves closer to the front support structure from the rear support structure (described in the horizontal direction). The third end of the linkage moves away from the front support structure (described in the horizontal direction). At this time, the unlocking member can push the locking member downwards by moving in the diagonally upward direction.

[0036] The linkage mechanism enables automatic unlocking of the backrest structure during folding, simplifying the folding operation and improving the user experience.

[0037] In a further technical solution, the linkage includes a connecting part and a damping part that are connected to each other;

[0038] The connecting part is rotatably connected to the upper support structure;

[0039] One end of the damping part is rotatably connected to the rear support structure, and the other end of the damping part is rotatably connected to the unlocking member; the damping part is used to absorb the impact energy transmitted from the front support structure and the rear support structure to the seat plate structure and the backrest structure.

[0040] The damping section may include a damper, a restoring spring, and an outer cover. The damper may include a damping cylinder and a piston rod slidably positioned within and sealed to the damping cylinder, the damping cylinder being filled with a damping medium. The restoring spring acts between the damping cylinder and the piston rod, maintaining the piston rod's tendency to extend out of the damping cylinder. The outer cover may consist of two opposing parts: one part covers the outside of the damping cylinder and is rotatably connected to the unlocking element and the connecting part; the other part covers the outside of the piston rod and is rotatably connected to the rear support structure.

[0041] The first end of the linkage may be contained within the connecting part, and the second and third ends of the linkage may be contained within the outer cover.

[0042] In this application, the shock-absorbing structure is used as a linkage structure, which can reduce the number of structures in the folding structure of the stroller, reduce structural costs, and optimize the structural layout.

[0043] The damping medium can be a damping liquid (such as hydraulic oil) or a damping gas.

[0044] During the movement of the piston rod within the damping cylinder, for example, the impact energy can be dissipated within the damping cylinder by the damping fluid. Finally, the restoring spring provides the restoring force to reset the piston rod, and the shock absorber returns to its initial state. Through this reciprocating motion of the shock absorber, the impact energy generated by road bumps is effectively absorbed and dissipated, reducing the vibration and impact on the seat area, and effectively achieving the shock absorption function.

[0045] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0046] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0047] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0048] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.

[0049] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0050] The working principle and advantages of this utility model are as follows:

[0051] During the folding process of the stroller's folding structure, the user first rotates the upper support structure downwards. This causes the first connecting rod to move downwards, resulting in the second and third connecting rods, whose ends closest to the first connecting rod, moving downwards. The ends of the second and third connecting rods furthest from the first connecting rod then cause the front and rear support structures to rotate towards each other. Based on this, this application achieves a simple, stable, and smooth folding mechanism for the stroller, with low structural cost and reduced risk of malfunction. Furthermore, the first, second, and third connecting rods are all located inside the stroller's folding structure; they are essentially built-in structures. During use, these three components are not exposed to the external environment, reducing the risk of them scraping against other structures.

[0052] In summary, this application achieves smooth folding of the stroller's folding structure with fewer linkages, resulting in fewer hinge points and fewer potential failure points. This reduces overall production costs and failure risks, especially since all linkages are built-in, further minimizing failure risks. Attached Figure Description

[0053] Appendix Figure 1 This is a schematic diagram of the folding structure of the stroller according to an embodiment of the present invention from one perspective;

[0054] Appendix Figure 2 This is a schematic diagram of the folding structure of the stroller from another perspective, according to an embodiment of the present invention.

[0055] Appendix Figure 3 This is another structural schematic diagram of the folding structure of the stroller according to an embodiment of the present utility model;

[0056] Appendix Figure 4 This is a schematic diagram of the unfolded state of the stroller folding structure according to an embodiment of the present invention;

[0057] Appendix Figure 5 This is a schematic diagram of the folding structure of the stroller in an embodiment of the present invention during the folding process;

[0058] Appendix Figure 6 This is a schematic diagram of the folding structure of the stroller in the folded state according to an embodiment of this utility model;

[0059] Appendix Figure 7 This is a partial structural diagram of the folding structure of the stroller according to an embodiment of the present invention;

[0060] Appendix Figure 8 For the appendix Figure 7 Schematic diagram of a local structure in the middle;

[0061] Appendix Figure 9 This is a schematic diagram of the locking component in an embodiment of the present utility model;

[0062] Appendix Figure 10 This is a schematic diagram of the unlocking component according to an embodiment of the present utility model;

[0063] Appendix Figure 11 This is a schematic diagram of the overall structure of the linkage component in an embodiment of this utility model;

[0064] Appendix Figure 12 This is a partial structural schematic diagram of the linkage component in an embodiment of the present utility model.

[0065] In the attached diagrams: 1. Front support structure; 2. Rear support structure; 3. Upper support structure;

[0066] 4. First connecting rod; 5. Second connecting rod; 6. Third connecting rod;

[0067] 7. Seat structure; 8. Backrest structure; 81. Positioning protrusion; 9. Locking element; 91. Positioning recess;

[0068] 10. Unlocking component; 11. Reset component;

[0069] 12. Linking component; 121. First end; 122. Second end; 123. Third end; 124. Connecting part;

[0070] 125. Damping section; 1251. Outer casing; 1252. Damping cylinder; 1253. Piston rod;

[0071] 13. Push handle structure; 14. Support section; 15. Connecting section; 16. Conversion ramp; 17. Groove. Detailed Implementation

[0072] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0073] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0074] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0075] See appendix Figure 1 -Appendix Figure 12 A folding structure for a stroller includes a front support structure 1, a rear support structure 2, and an upper support structure 3 that are arranged to rotate relative to each other.

[0076] The upper support structure 3 is rotatably connected to a first connecting rod 4, the front support structure 1 is rotatably connected to a second connecting rod 5, and the rear support structure 2 is rotatably connected to a third connecting rod 6. The third connecting rod 6 is rotatably connected to the second connecting rod 5, and either the second connecting rod 5 or the third connecting rod 6 is rotatably connected to the first connecting rod 4.

[0077] The first linkage 4, the second linkage 5, and the third linkage 6 are all located inside the folding structure of the stroller;

[0078] During the process of switching the stroller's folding structure from the unfolded state to the folded state, the upper support structure 3 rotates and drives the first connecting rod 4 to move. The first connecting rod 4 drives the second connecting rod 5 and the third connecting rod 6 to rotate towards each other and move closer together. The second connecting rod 5 and the third connecting rod 6 cooperate to drive the front support structure 1 and the rear support structure 2 to rotate towards each other and move closer together.

[0079] The front support structure 1 may include a front roller, and the rear support structure 2 may include a rear roller. This is a standard configuration and will not be described in detail here.

[0080] The upper support structure 3 can be the push handle structure 13 in the stroller. When the push handle structure 13 can be reversed, the upper support structure 3 can be the support part 14 of the seat part in the stroller. The upper support structure 3 can also include both the push handle structure 13 and the support part 14 at the same time. There are no specific restrictions.

[0081] The locking and unlocking of the front support structure 1, the rear support structure 2 and the upper support structure 3 are not the focus of this embodiment. Please refer to the existing technology. They will not be described in detail here.

[0082] During the folding process of the stroller's folding structure, the user first rotates the upper support structure 3 downwards. The upper support structure 3 drives the first connecting rod 4 to move downwards as a whole, causing the ends of the second connecting rod 5 and the third connecting rod 6 closest to the first connecting rod 4 to move downwards. The ends of the second connecting rod 5 and the third connecting rod 6 furthest from the first connecting rod 4 then drive the front support structure 1 and the rear support structure 2 to rotate towards each other. Based on this, this embodiment achieves the folding of the stroller's folding structure smoothly and stably with a simple structure, resulting in low structural cost and a reduced risk of malfunction. In addition, the first connecting rod 4, the second connecting rod 5, and the third connecting rod 6 are all located inside the stroller's folding structure. It can be understood that all three are built-in structures, and they are not exposed to the external environment when the stroller's folding structure is in use, which reduces the risk of them scraping against other structures.

[0083] Preferably, the first linkage 4, the second linkage 5, and the third linkage 6 are all formed by sequentially connecting multiple connecting segments 15, and there is an included angle between any two adjacent connecting segments 15, which can improve the structural strength of the first linkage 4, the second linkage 5, and the third linkage 6.

[0084] In summary, this embodiment achieves smooth folding of the stroller's folding structure with fewer connecting structures. Consequently, the number of hinge points is also reduced, resulting in fewer potential failure points and lower overall production costs and failure risks. In particular, since all connecting structures are built-in, the risk of failure is further reduced.

[0085] See appendix Figure 4 -Appendix Figure 6In this embodiment, both the rear support structure 2 and the upper support structure 3 rotate around a first axis, and the front support structure 1 rotates around a second axis, which is parallel to the first axis. In this case, the front support structure 1 can be rotatably mounted on the rear support structure 2. The end of the front support structure 1 does not need to be located at the connection between the rear support structure 2 and the upper support structure 3, which reduces the structural complexity in that connection area. One effect is that it reduces the width of that area. If the end of the front support structure 1 is also located in this area, it will increase the width of that area, thus increasing the width of the stroller's folding structure. The width direction of the stroller's folding structure can be the distribution direction of the two front rollers in the front support structure 1 shown in the attached figure.

[0086] See appendix Figure 3 In this embodiment, the third linkage 6 is rotatably connected to the first linkage 4.

[0087] During the folding process of the stroller's folding structure, the user first rotates the upper support structure 3 downwards, at which point the upper support structure 3 moves closer to the rear support structure 2. Based on this, in the second linkage 5 and the third linkage 6, the third linkage 6 is rotatably connected to the first linkage 4. Compared to the second linkage 5 being rotatably connected to the first linkage 4, the length of the first linkage 4 can be reduced, lowering the structural cost. Under the same conditions, the structural strength of the first linkage 4 can be improved, and the area required for the first linkage 4 to move can be reduced, facilitating the structural layout of the stroller's folding structure.

[0088] See appendix Figure 7 -Appendix Figure 10 In this embodiment, the seat plate structure 7 and the backrest structure 8 are rotatably connected.

[0089] The seat plate structure 7 is rotatably connected to the front support structure 1;

[0090] The seat structure 7 is slidably provided with a locking member 9, the locking member 9 is provided with a positioning recess 91, and the backrest structure 8 is formed with a positioning protrusion 81; in the unfolded state of the stroller folding structure, the positioning protrusion 81 extends into the positioning recess 91 to restrict the relative rotation of the seat structure 7 and the backrest structure 8.

[0091] The seat structure 7 is slidably provided with an unlocking component 10; during the process of the stroller folding structure switching from the unfolded state to the folded state, the unlocking component 10 pushes the locking component 9 so that the positioning recess 91 gradually disengages from the positioning protrusion 81.

[0092] A reset member 11 is provided between the seat plate structure 7 and the locking member 9. The reset member 11 ensures that the locking member 9 always has a tendency to move closer to the positioning protrusion 81.

[0093] The seat structure 7 may include a support frame and a seat plate, and the backrest structure 8 may include a frame and a backrest. The seat plate and backrest may also be replaced by a fabric cover, which is an existing design and will not be described in detail here. The seat structure 7 and the backrest structure 8 may form the aforementioned seat cushion portion, or the two and the upper support structure 3 may form the aforementioned seat cushion portion, which is not limited here.

[0094] The seat structure 7 is rotatably connected to the front support structure 1 to support the seat structure 7, and the seat structure 7 can be folded. The backrest structure 8 is rotatably mounted on the seat structure 7, rather than on the rear support structure 2, to facilitate the installation and removal of the seat cushion.

[0095] When the stroller is unfolded, the locking element 9 is preferably vertically sliding for smoother movement. The specific implementation method is not limited; for example, it can utilize a slide rail. The locking element 9 may have multiple positioning recesses 91 and multiple positioning protrusions 81, with no limit on their number or distribution.

[0096] One of the prerequisites for the stroller's folding structure to achieve complete folding is that the seat structure 7 and the backrest structure 8 can rotate relative to each other. Specifically, the backrest structure 8 can be movable to increase the degree of folding of the stroller's folding structure, while the rotation of the seat structure 7 is restricted by the front support structure 1. The position of the seat structure 7 after folding is shown in the attached figure.

[0097] One prerequisite for the stable unfolding of the stroller's folding structure is that the backrest structure 8 remains stable, achieved by the positioning protrusion 81 inserting into the positioning recess 91 to form an assembled state. The unlocking component 10 is used to unlock the backrest structure 8. The unlocking component 10 pushes the locking component 9, causing the locking component 9 to move downwards (for example), so that the positioning recess 91 gradually moves away from the positioning protrusion 81, thus unlocking the stroller. The main body of the unlocking component 10 can be a long rod structure, which can move in an upward diagonal direction to push the locking component 9 vertically downwards. The conversion of the movement direction between different structures can be achieved by means of the conversion ramp 16, which is an existing direction conversion setting and will not be described in detail here.

[0098] The reset element 11 can be a compression spring. How the compression spring achieves structural reset is an existing method and will not be elaborated here.

[0099] A groove 17 can be provided on one end of the seat plate structure 7. The locking member 9, the positioning protrusion 81 when locked, the reset member 11 and the unlocking member 10 can be placed in the groove 17 to realize the integrated setting of the structure, facilitate the structural layout and effectively realize the functions of the locking backrest structure 8.

[0100] See appendix Figure 11In this embodiment, a linkage 12 is also included. The first end 121 of the linkage 12 is rotatably connected to the upper support structure 3, the second end 122 of the linkage 12 is rotatably connected to the rear support structure 2, and the third end 123 of the linkage 12 is rotatably connected to the unlocking member 10.

[0101] During the process of switching the stroller folding structure from the unfolded state to the folded state, the upper support structure 3 rotates and causes the unlocking member 10 to move relative to the seat plate structure 7 through the linkage 12, so that the unlocking member 10 pushes the locking member 9 to unlock the backrest structure 8.

[0102] During the folding process of the stroller's folding structure, the upper support structure 3 rotates downwards, and the first end 121 of the linkage 12 moves downwards with the upper support structure 3 (described in the vertical direction). The rear support structure 2 and the front support structure 1 move closer to each other, and the second end 122 of the linkage 12 moves closer to the front support structure 1 after the support structure 2 moves closer to the front support structure 1 (described in the horizontal direction). The third end 123 of the linkage 12 moves away from the front support structure 1 (described in the horizontal direction). At this time, the unlocking member 10 can push the locking member 9 downwards by moving in the oblique upward direction as described above.

[0103] The linkage 12 enables automatic unlocking of the backrest structure 8 during folding, thereby simplifying the folding operation and improving the user experience.

[0104] See appendix Figure 11 -Appendix Figure 12 In this embodiment, the linkage 12 includes a connecting part 124 and a damping part 125 connected to each other;

[0105] The connecting part 124 is rotatably connected to the upper support structure 3;

[0106] One end of the damping part 125 is rotatably connected to the rear support structure 2, and the other end of the damping part 125 is rotatably connected to the unlocking member 10; the damping part 125 is used to absorb the impact energy transmitted from the front support structure 1 and the rear support structure 2 to the seat plate structure 7 and the backrest structure 8.

[0107] The damping section 125 may include a damper, a restoring spring, and an outer cover 1251. The damper may include a damping cylinder 1252 and a piston rod 1253 slidably positioned within and sealed to the damping cylinder 1252, the damping cylinder 1252 being filled with a damping medium. The restoring spring acts between the damping cylinder 1252 and the piston rod 1253, maintaining the piston rod 1253's tendency to extend out of the damping cylinder 1252. The outer cover 1251 may be divided into two opposing parts, one part covering the outside of the damping cylinder 1252 and rotatably connected to the unlocking member 10 and connected to the connecting part 124, and the other part covering the outside of the piston rod 1253 and rotatably connected to the rear support structure 2.

[0108] The first end 121 of the linkage 12 may be included in the connecting part 124, and the second end 122 and the third end 123 of the linkage 12 may be included in the outer cover 1251.

[0109] In this embodiment, the shock-absorbing structure is used as a linkage structure, which can reduce the number of structures in the stroller's folding structure, reduce structural costs, and optimize the structural layout.

[0110] The damping medium can be a damping liquid (such as hydraulic oil) or a damping gas.

[0111] During the movement of the piston rod 1253 within the damping cylinder 1252, for example, the impact energy can be dissipated within the damping cylinder 1252 by the damping fluid. Finally, the restoring spring provides a restoring force to reset the piston rod 1253, and the shock absorber returns to its initial state. Through one such reciprocating motion of the shock absorber, the impact energy generated by road bumps is effectively absorbed and dissipated by the shock absorber, reducing the vibration impact on the seat and effectively achieving the shock absorption function.

[0112] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A folding structure for a stroller, characterized in that: It includes a front support structure (1), a rear support structure (2), and an upper support structure (3) that are arranged in a relatively rotating manner. The upper support structure (3) is rotatably connected to a first connecting rod (4), the front support structure (1) is rotatably connected to a second connecting rod (5), and the rear support structure (2) is rotatably connected to a third connecting rod (6). The third connecting rod (6) is rotatably connected to the second connecting rod (5), and either the second connecting rod (5) or the third connecting rod (6) is rotatably connected to the first connecting rod (4). The first linkage (4), the second linkage (5) and the third linkage (6) are all located inside the folding structure of the stroller; During the process of switching the stroller folding structure from the unfolded state to the folded state, the upper support structure (3) rotates and drives the first connecting rod (4) to move. The first connecting rod (4) drives the second connecting rod (5) and the third connecting rod (6) to rotate towards each other and move closer. The second connecting rod (5) and the third connecting rod (6) cooperate to drive the front support structure (1) and the rear support structure (2) to rotate towards each other and move closer.

2. The folding structure for a stroller according to claim 1, characterized in that: The rear support structure (2) and the upper support structure (3) both rotate around the first axis, and the front support structure (1) rotates around the second axis, which is parallel to the first axis.

3. The folding structure for a stroller according to claim 2, characterized in that: The third linkage (6) is rotatably connected to the first linkage (4).

4. A folding structure for a stroller according to any one of claims 1-3, characterized in that: It also includes a seat plate structure (7) and a backrest structure (8) that are rotatably connected. The seat plate structure (7) is rotatably connected to the front support structure (1); The seat structure (7) is slidably provided with a locking member (9), the locking member (9) is provided with a positioning recess (91), and the backrest structure (8) is formed with a positioning protrusion (81); when the stroller folding structure is unfolded, the positioning protrusion (81) extends into the positioning recess (91) to restrict the relative rotation of the seat structure (7) and the backrest structure (8); The seat structure (7) is slidably provided with an unlocking component (10); during the process of the stroller folding structure switching from the unfolded state to the folded state, the unlocking component (10) pushes the locking component (9) so that the positioning recess (91) gradually disengages from the positioning protrusion (81); A reset member (11) is provided between the seat plate structure (7) and the locking member (9), and the reset member (11) makes the locking member (9) always have a tendency to move toward the positioning protrusion (81).

5. The folding structure for a stroller according to claim 4, characterized in that: It also includes a linkage (12), the first end (121) of which is rotatably connected to the upper support structure (3), the second end (122) of which is rotatably connected to the rear support structure (2), and the third end (123) of which is rotatably connected to the unlocking member (10). During the process of switching the stroller folding structure from the unfolded state to the folded state, the upper support structure (3) rotates and causes the unlocking member (10) to move relative to the seat plate structure (7) through the linkage member (12), so that the unlocking member (10) pushes the locking member (9).

6. The folding structure for a stroller according to claim 5, characterized in that: The linkage (12) includes a connecting part (124) and a damping part (125) that are connected to each other. The connecting part (124) is rotatably connected to the upper support structure (3); One end of the damping part (125) is rotatably connected to the rear support structure (2), and the other end of the damping part (125) is rotatably connected to the unlocking member (10); the damping part (125) is used to absorb the impact energy transmitted from the front support structure (1) and the rear support structure (2) to the seat plate structure (7) and the backrest structure (8).

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