A stroller
By using a rotatable connection and locking structure design between the push rod, seat, and bracket, the problem of the stroller becoming too bulky after folding is solved, achieving both compact storage and safe support.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN BABYKISS CHILD PROD CO LTD
- Filing Date
- 2025-09-24
- Publication Date
- 2026-08-04
AI Technical Summary
Existing strollers are bulky when folded, making it difficult to meet the needs of storage in small family spaces and carrying in car trunks. Furthermore, the seat support structure and frame linkage limit the ability to fold and unfold simultaneously.
The design incorporates a rotatable push rod structure, a front support structure, a rear support structure, a connecting rod, and a locking structure, allowing for flexible rotation and locking between the push rod, the seat plate, and the support. This enables the trolley to fold compactly, and the push rod's reversing and support functions are achieved through a slider and locking structure.
This design achieves a compact size when the stroller is folded, making it easy to store and carry, improving storage convenience, while also enhancing the safety and stability of the seat support.
Smart Images
Figure CN224589206U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stroller technology, specifically to a baby stroller. Background Technology
[0002] In daily travel and home storage scenarios, the demand for foldable storage of strollers (such as baby strollers and shopping carts) is becoming increasingly prominent. The volume after folding directly affects the convenience of transportation and storage, and the degree of folding of the frame structure is the core factor that determines the stroller's storage performance. To achieve basic folding functionality, existing strollers typically employ a multi-section articulated frame design. However, when designing the structure supporting the seat plate in the seat basket assembly (the seat plate needs to provide stable support to ensure safety and comfort), this support structure often forms a rigid connection or restricts interaction with the main frame. For example, the seat plate support structure of some strollers needs to be fixed to the frame's crossbeams or vertical bars, preventing it from folding down to a compact state synchronously with the frame. This results in a relatively large overall folded size for the stroller, making it difficult to meet users' needs for "small-volume storage." This limitation is particularly pronounced in scenarios such as storage in small home spaces or carrying in a car trunk.
[0003] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content
[0004] The purpose of this invention is to provide a baby stroller.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A baby stroller includes: a push rod structure, a seat structure, a front support structure, a rear support structure, a first link, a second link, a third link, a first locking structure, and a second locking structure; The rear support structure includes an upper rear support rod and a lower rear support rod; The push rod structure, the front support structure, and the lower rod of the rear support are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis; The seat plate structure, the upper rod of the rear support and the third connecting rod are rotatably arranged relative to each other, and at least two of the three can rotate about the same axis; The end of the upper rod of the rear support away from the seat plate structure is rotatably connected to the end of the lower rod of the rear support away from the push rod structure; One end of the first connecting rod is fixedly connected to the front bracket structure, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is fixedly connected to the seat plate structure; One end of the first locking structure acts on the first link, and the other end acts on the second link; the first locking structure serves as a mechanism that can restrict the first link and the second link from rotating relative to each other; The end of the third link away from the seat plate structure is rotatably connected to the push rod structure; One end of the second locking structure acts on the third link, and the other end acts on the push rod structure; the second locking structure serves as a mechanism that can restrict the relative rotation of the third link and the push rod structure.
[0006] The push rod structure, the front support structure, and the lower rear support rod are rotatably configured to rotate around each other, and at least two of the three can rotate around the same axis. This is used as an example for illustration, and similar descriptions in this application refer to this description: the three can rotate around the same axis, or the front support structure and the lower rear support rod can be rotatably connected (both rotate around the same axis). The push rod structure is rotatably configured on the front support structure or the lower rear support rod. It is not limited that all three must rotate on the same axis, nor is it limited to the required connection method and mutual connection relationship, as long as the purpose of forming a trolley can be achieved.
[0007] For ease of explanation and understanding, the following description assumes that the push rod structure, the front support structure, and the lower rod of the rear support can rotate around the first axis, and that the seat plate structure, the upper rod of the rear support, and the third connecting rod can rotate around the second axis.
[0008] The first link can rotate about a first axis. The second link can rotate about a second axis. Taking the first link as an example, the first link is fixedly connected to the front support structure, which can increase the strength of the trolley structure.
[0009] The first locking structure is illustrated below: The first locking structure includes a lock tongue and a lock hole. The lock hole is located on the first connecting rod, and the lock tongue is located on the second connecting rod. After the lock tongue is inserted into the lock hole, it locks the first connecting rod and the second connecting rod. How the locking is specifically achieved is not the innovation of this application; achieving the locking purpose is sufficient.
[0010] The end of the third link furthest from the seat plate structure is rotatably connected to the push rod structure to limit the rotation range of the push rod structure (only a small range of rotation is allowed, the specific range is not limited). One end of the second locking structure acts on the third link, and the other end acts on the push rod structure. Based on this, when the second locking structure locks the push rod structure and the third link, the push rod structure is further limited and cannot rotate, making it convenient for the operator to hold the push rod structure stably to push the cart.
[0011] In the stroller of this application, the push rod structure, the front support structure, and the lower rear support rod are rotatably configured to rotate relative to each other; the seat structure, the upper rear support rod, and the third connecting rod are rotatably configured to rotate relative to each other; the first connecting rod and the second connecting rod are rotatably configured to rotate relative to each other; and the upper rear support rod and the lower rear support rod are rotatably configured to rotate relative to each other. Based on this, when the stroller is folded and stored, its size is small, making it easy to place in small areas such as a car trunk, thus improving the stroller's storage convenience. Furthermore, through the locking mechanism of the first locking structure, the second connecting rod can support the seat structure, and the upper rear support rod can also cooperate in providing support, improving the safety of children or items supported by the seat structure during stroller use.
[0012] In a further technical solution, a slider is slidably connected to the push rod structure, and the end of the third connecting rod away from the seat plate structure is rotatably connected to the push rod structure through the slider; One end of the second locking structure acts on the third link via the slider.
[0013] The end of the third link away from the seat plate structure is rotatably connected to the slider, and the slider is slidably connected to the push rod structure.
[0014] One end of the second locking structure acts directly on the slider. When the second locking structure directly locks the slider and the push rod structure, the third connecting rod is also indirectly locked.
[0015] By using the slider and the third link, when the second locking structure is locked, the slider cannot move along the length of the push rod structure. At this time, the push rod structure can only swing within a small range. When the second locking structure is unlocked, the rotation range (swing range) of the push rod structure is expanded. By selecting the initial connection point between the push rod structure and the slider (such as setting it in the middle of the push rod structure's length), the push rod structure can achieve a larger range of rotation on the trolley, thus transforming a unidirectional trolley into a bidirectional trolley. For example, initially, the push rod structure is on one side of the trolley, with front and rear rollers. When the push rod structure rotates to the other side, the initial front roller becomes the rear roller, fulfilling the functional requirements of a bidirectional trolley.
[0016] In a further technical solution, a handle is slidably connected to the push rod structure, and the handle can drive the second locking structure to move the portion acting on the slider, so as to release the second locking structure from locking the slider and the push rod structure.
[0017] The second locking structure directly locks the slider and push rod structure, and indirectly locks the third link.
[0018] The following example illustrates the second locking structure: It includes a latch and a lock hole. The lock hole is located on the slider, and the latch is movably mounted on the push rod structure along its length. A handle is also movably mounted on the push rod structure along its length. By pulling the latch along the length of the push rod structure, the handle separates the latch from the lock hole, releasing the lock on the slider and push rod structure. This allows the slider to move along the length of the push rod structure, thus enabling the push rod structure to reverse direction.
[0019] The second locking structure is generally an internal structure and is not exposed to the external environment, while the handle can be inserted into the push rod structure to facilitate the operator to unlock the second locking structure.
[0020] The second locking structure itself is not an innovation of this application; it is sufficient to achieve the locking purpose.
[0021] In a further technical solution, the push rod structure includes an upper push rod and a lower push rod that rotate relative to each other; The push rod structure, the front support structure, and the lower push rod are rotatably configured to rotate around each other, and at least two of the three can rotate around the same axis. The slider is slidably connected to the upper push rod; The other end of the second locking structure acts on the upper push rod.
[0022] The upper and lower push rods are rotatably connected at an intersection point. When the push rod structure changes position, the upper push rod can rotate around this intersection point, thereby switching the trolley's forward direction. This design makes the trolley more convenient to use. Taking folded storage as an example, the upper and lower push rods can rotate relative to each other. After folding, with the trolley placed vertically, the lower push rod can be approximately horizontal, and the upper push rod can be approximately vertical, thus reducing the vertical space required for the push rod structure and improving the trolley's ease of storage after folding.
[0023] The length ratio between the upper push rod and the lower push rod can be adjusted according to actual needs, and there are no restrictions here.
[0024] Because of the design of the slider structure, there is no need to set an additional locking structure at the intersection of the upper and lower push rods, thus reducing the number of locking structures.
[0025] In a further technical solution, a push handle is rotatably connected to the end of the push rod structure that is away from the front support structure; It also includes a third locking structure, one end of which acts on the push rod structure and the other end of which acts on the push handle; the third locking structure serves as a mechanism that can restrict the push rod structure and the push handle from rotating relative to each other.
[0026] Compared to designs where the push rod and handle are integrated, this design, thanks to the third locking structure, prevents the handle from rotating during trolley use, allowing the operator to easily drive the trolley by manipulating the handle. During trolley storage, the handle can rotate relative to the push rod. Taking the folded trolley as an example, when placed vertically, the handle does not occupy additional vertical space, thus reducing the trolley's vertical space requirements and improving storage convenience after folding.
[0027] The specific structure of the third locking structure is not limited, as long as it achieves the locking function and can be used with the unlocking components described below. The third locking structure can refer to the above description of other locking structures.
[0028] A further technical solution also includes an unlocking component, one end of which acts on the push handle and the other end of which acts on the third locking structure; the unlocking component is a component capable of releasing the third locking structure from locking the push rod structure and the push handle.
[0029] For example, the third locking structure includes a keyhole and a bolt. The keyhole is located on the push rod structure, and the bolt is located on the push handle and can move relative to the push handle. The unlocking component includes a pull cord and an elastic structure (refer to the unlocking lever on existing trolleys). When the elastic structure is squeezed, it can retract, thereby pulling the pull cord. The pull cord pulls the bolt away from the keyhole, thus unlocking the device.
[0030] The unlocking mechanism allows operators to easily unlock the push handle, enabling the trolley to be fully folded. The specific locking and unlocking methods are not limited here; you can refer to the example above or the locking and unlocking structures on existing trolleys.
[0031] It should be noted that the first locking structure can be unlocked by rotating the push handle, in the same way as the unlocking mechanism.
[0032] In a further technical solution, the seat plate structure includes a front seat plate and a rear seat plate that are rotatably connected; It also includes a fourth link, one end of which is rotatably connected to the front seat plate, and the other end of which is rotatably connected to the front support structure or the rear support structure; The other end of the second connecting rod is fixedly connected to the rear seat plate; The rear seat plate, the upper rod of the rear bracket, and the third connecting rod are rotatably arranged relative to each other, and at least two of the three can rotate about the same axis.
[0033] The other end of the fourth link can be rotatably connected to the lower link of the rear support.
[0034] The seat structure may be part of an existing seat assembly on a vehicle frame, and the seat assembly may also include a backrest for a child to lie down; this application does not limit this.
[0035] The seat structure consists of a front seat plate and a rear seat plate. The explanation is based on the trolley being placed vertically after folding. In this case, the seat structure is essentially a bent structure, reducing its vertical space requirement and thus lowering the vertical space needed for the trolley, improving its ease of storage after folding.
[0036] Preferably, the front seat plate and the rear seat plate have the same length.
[0037] Preferably, the other end of the fourth link is rotatably connected to the front support structure. The fourth link can rotate about the first axis.
[0038] It should be noted that the attached figure shows the preferred trolley structure of this application, but it is not limited thereto.
[0039] 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.
[0040] 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.
[0041] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.
[0042] 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 the case.
[0043] 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.
[0044] The working principle and advantages of this utility model are as follows: In the stroller of this application, the push rod structure, the front support structure, and the lower rear support rod are rotatably configured to rotate relative to each other; the seat structure, the upper rear support rod, and the third connecting rod are rotatably configured to rotate relative to each other; the first connecting rod and the second connecting rod are rotatably configured to rotate relative to each other; and the upper rear support rod and the lower rear support rod are rotatably configured to rotate relative to each other. Based on this, when the stroller is folded and stored, its size is small, making it easy to place in small areas such as a car trunk, thus improving the stroller's storage convenience. Furthermore, through the locking mechanism of the first locking structure, the second connecting rod can support the seat structure, and the upper rear support rod can also cooperate in providing support, improving the safety of children or items supported by the seat structure during stroller use. Attached Figure Description
[0045] Figure 1 This is a schematic diagram of the stroller structure when the push rod structure is on one side according to an embodiment of the present invention; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the folded baby stroller according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the stroller structure when the push rod structure is on the other side according to an embodiment of the present invention; Figure 5 for Figure 4 A structural diagram from another perspective; Figure 6 This is a schematic diagram of the structure of the baby stroller during the folding process according to an embodiment of the present invention.
[0046] In the attached diagrams: 1. Push rod structure; 11. Upper push rod; 12. Lower push rod; 2. Seat plate structure; 21. Front seat plate; 22. Rear seat plate; 3. Front support structure; 4. Rear support structure; 41. Rear support upper rod; 42. Rear support lower rod; 5. First connecting rod; 6. Second connecting rod; 7. Third connecting rod; 8. Slider; 9. Handle; 10. Push handle; 100. Unlocking component; 200. Fourth connecting rod. Detailed Implementation
[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments: 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.
[0048] 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.
[0049] See Figures 1-6 A baby stroller includes: a push rod structure 1, a seat structure 2, a front support structure 3, a rear support structure 4, a first link 5, a second link 6, a third link 7, a first locking structure (not shown in the figure), and a second locking structure (not shown in the figure). The rear support structure 4 includes a rear support upper rod 41 and a rear support lower rod 42; The push rod structure 1, the front support structure 3 and the rear support lower rod 42 are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis; The seat plate structure 2, the upper rod 41 of the rear support and the third connecting rod 7 are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis; The end of the upper rod 41 of the rear support away from the seat plate structure 2 is rotatably connected to the end of the lower rod 42 of the rear support away from the push rod structure 1; One end of the first connecting rod 5 is fixedly connected to the front bracket structure 3, the other end of the first connecting rod 5 is rotatably connected to one end of the second connecting rod 6, and the other end of the second connecting rod 6 is fixedly connected to the seat plate structure 2; One end of the first locking structure acts on the first link 5, and the other end acts on the second link 6; the first locking structure serves as a mechanism that can restrict the first link 5 and the second link 6 from rotating relative to each other. The end of the third connecting rod 7 away from the seat plate structure 2 is rotatably connected to the push rod structure 1; One end of the second locking structure acts on the third link 7, and the other end acts on the push rod structure 1; the second locking structure serves as a mechanism that can restrict the relative rotation of the third link 7 and the push rod structure 1.
[0050] It should be noted that this stroller can be used not only for carrying babies, but also for transporting items.
[0051] The push rod structure 1, the front support structure 3, and the rear support lower rod 42 are rotatably configured to rotate around each other, and at least two of the three can rotate around the same axis. This is used as an example for illustration, and similar descriptions in this embodiment refer to this description: the three can rotate around the same axis, or the front support structure 3 and the rear support lower rod 42 can be rotatably connected (both rotate around the same axis). The push rod structure 1 is rotatably configured on the front support structure 3 or the rear support lower rod 42. It is not limited that all three must rotate on the same axis, nor is it limited to the required connection method and mutual connection relationship, as long as the purpose of forming a trolley can be achieved.
[0052] For ease of explanation and understanding, the following description assumes that the push rod structure 1, the front support structure 3, and the lower rear support rod 42 can rotate around the first axis, and that the seat plate structure 2, the upper rear support rod 41, and the third connecting rod 7 can rotate around the second axis.
[0053] The first link 5 can rotate about a first axis. The second link 6 can rotate about a second axis. Taking the first link 5 as an example, the first link 5 is fixedly connected to the front support structure 3, which can increase the strength of the trolley structure.
[0054] The first locking structure is illustrated below: The first locking structure includes a locking bolt and a locking hole. The locking hole is located on the first connecting rod 5, and the locking bolt is located on the second connecting rod 6. After the locking bolt is inserted into the locking hole, it locks the first connecting rod 5 and the second connecting rod 6. How the locking is specifically achieved is not the innovation of this application; achieving the locking purpose is sufficient.
[0055] The end of the third link 7 furthest from the seat plate structure 2 is rotatably connected to the push rod structure 1 to limit the rotation range of the push rod structure 1 (it can only rotate within a small range, the specific range is not limited). One end of the second locking structure acts on the third link 7, and the other end acts on the push rod structure 1. Based on this, when the second locking structure locks the push rod structure 1 and the third link 7, the push rod structure 1 is further limited and cannot rotate, making it convenient for the operator to hold the push rod structure 1 stably to push the cart.
[0056] In this embodiment of the trolley, the push rod structure 1, the front support structure 3, and the lower rear support rod 42 are rotatably connected to each other; the seat structure 2, the upper rear support rod 41, and the third connecting rod 7 are rotatably connected to each other; the first connecting rod 5 and the second connecting rod 6 are rotatably connected to each other; and the upper rear support rod 41 and the lower rear support rod 42 are rotatably connected to each other. Therefore, when the trolley is folded and stored, its volume is relatively small (see...). Figure 3 This design allows for convenient placement in smaller spaces such as car trunks, improving the stroller's storage convenience. Furthermore, the locking mechanism of the first locking structure enables the second link 6 to support the seat structure 2, and the rear support rod 41 also provides support, enhancing the safety of children or items supported by the seat structure 2 during stroller use.
[0057] The end of the upper rear support rod 41 away from the seat plate structure 2 is rotatably connected to the end of the lower rear support rod 42 away from the push rod structure 1. (Refer to...) Figure 1 The lower rear support rod 42 is V-shaped at the end away from the push rod structure 1, and one end of the V-shaped structure is rotatably connected to the upper rear support rod 41 at the end away from the seat plate structure 2.
[0058] See Figure 2 In this embodiment, a slider 8 is slidably connected to the push rod structure 1, and the end of the third connecting rod 7 away from the seat plate structure 2 is rotatably connected to the push rod structure 1 through the slider 8; One end of the second locking structure acts on the third link 7 via the slider 8.
[0059] The end of the third link 7 away from the seat plate structure 2 is rotatably connected to the slider 8, and the slider 8 is slidably connected to the push rod structure 1.
[0060] One end of the second locking structure acts directly on the slider 8. When the second locking structure directly locks the slider 8 and the push rod structure 1, the third connecting rod 7 is also indirectly locked.
[0061] By using the combination of slider 8 and third link 7, when the second locking structure is locked, slider 8 cannot move along the length of push rod structure 1. At this time, push rod structure 1 can only swing within a small range. When the second locking structure is unlocked, the rotation range (swing range) of push rod structure 1 is expanded. By selecting the initial connection point between push rod structure 1 and slider 8 (such as setting it in the middle of the length of push rod structure 1), push rod structure 1 can achieve a larger range of rotation on the trolley, thus transforming a unidirectional trolley into a bidirectional trolley. For example, initially, push rod structure 1 is on one side of the trolley, with front and rear rollers. When push rod structure 1 rotates to the other side, the initial front roller becomes the rear roller, satisfying the functional requirements of a bidirectional trolley.
[0062] See Figure 2 , Figure 4 , Figure 5 In this embodiment, a handle 9 is slidably connected to the push rod structure 1. The handle 9 can drive the second locking structure to move part of the slider 8, so as to release the second locking structure from locking the slider 8 and the push rod structure 1.
[0063] The second locking structure directly locks the slider 8 and the push rod structure 1, and indirectly locks the third link 7.
[0064] For example, the second locking structure includes a latch and a lock hole. The lock hole is located on the slider 8, and the latch is movably located on the push rod structure 1 along its length. The handle 9 is movably located on the push rod structure 1 along its length. By pulling the latch along the length of the push rod structure 1, the handle 9 separates the latch from the lock hole, releasing the lock on the slider 8 and the push rod structure 1, allowing the slider to move along the length of the push rod structure 1, thereby enabling the push rod structure 1 to reverse direction.
[0065] The second locking structure is generally a built-in structure and is not exposed to the external environment. The handle 9 can be inserted into the push rod structure 1 to facilitate the operator to unlock the second locking structure.
[0066] The second locking structure itself is not an innovation of this application; it is sufficient to achieve the locking purpose.
[0067] See Figure 2 In this embodiment, the push rod structure 1 includes an upper push rod 11 and a lower push rod 12 that rotate relative to each other; The push rod structure 1, the front support structure 3 and the lower push rod 12 are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis; The slider 8 is slidably connected to the upper push rod 11; The other end of the second locking structure acts on the upper push rod 11.
[0068] The upper push rod 11 and the lower push rod 12 are rotatably connected at an intersection point. When the position of the push rod structure 1 is changed, the upper push rod 11 can rotate around this intersection point, thereby switching the forward direction of the trolley. With this configuration, the trolley is more convenient to use. Taking the folding and storage of the trolley as an example, the upper push rod 11 and the lower push rod 12 can rotate relative to each other. After folding, see... Figure 2 To illustrate with the trolley placed vertically, the lower push rod 12 can be oriented approximately horizontally, and the upper push rod 11 can be oriented approximately vertically, thereby reducing the vertical space required for the push rod structure 1 and improving the convenience of folding and storing the trolley.
[0069] The length ratio of the upper push rod 11 to the lower push rod 12 can be adjusted according to actual needs, and there is no limitation here.
[0070] Because of the structure of slider 8, there is no need to set an additional locking structure at the intersection of upper push rod 11 and lower push rod 12, thus reducing the number of locking structures.
[0071] See Figure 2 In this embodiment, a push handle 10 is rotatably connected to the end of the push rod structure 1 away from the front bracket structure 3; It also includes a third locking structure (not shown in the figure), one end of which acts on the push rod structure 1 and the other end of which acts on the push handle 10; the third locking structure serves as a mechanism that can restrict the push rod structure 1 and the push handle 10 from rotating relative to each other.
[0072] Compared to the design where the push rod structure 1 and the push handle 10 are integrated, this design, due to the third locking structure, prevents the push handle 10 from rotating during trolley use, allowing the operator to easily drive the trolley by manipulating the handle. During the trolley's storage phase, the handle can rotate relative to the push rod structure 1. Taking the folded trolley placed vertically as an example, the handle does not occupy additional vertical space (see...). Figure 3 This reduces the vertical space required for the stroller and improves the ease of storage after folding.
[0073] The specific structure of the third locking structure is not limited, as long as it achieves the locking function and can cooperate with the unlocking component 100 described below. The third locking structure can refer to the above description of other locking structures.
[0074] See Figure 2 In this embodiment, an unlocking component 100 is also included. One end of the unlocking component 100 acts on the push handle 10, and the other end acts on the third locking structure. The unlocking component 100 is a component that can release the third locking structure from locking the push rod structure 1 and the push handle 10.
[0075] For example, the third locking structure includes a lock hole and a bolt. The lock hole is located on the push rod structure 1, and the bolt is located on the push handle 10 and can move relative to the push handle 10. The unlocking component 100 includes a pull rope and an elastic structure (refer to the unlocking handle on an existing trolley). When the elastic structure is squeezed, it can retract, thereby pulling the pull rope, which in turn pulls the bolt away from the lock hole, thus unlocking the device.
[0076] The unlocking component 100 allows the operator to easily unlock the push handle 10, thereby enabling the trolley to be fully folded. The specific locking and unlocking methods are not limited here; you can refer to the example above or the locking and unlocking structure on existing trolleys.
[0077] It should be noted that the first locking structure can be unlocked by rotating the push handle 10, in the same way as the unlocking method of the unlocking component 100.
[0078] See Figure 1 In this embodiment, the seat plate structure 2 includes a front seat plate 21 and a rear seat plate 22 that are rotatably connected; It also includes a fourth link 200, one end of which is rotatably connected to the front seat plate 21, and the other end is rotatably connected to the front support structure 3 or the rear support structure 4; The other end of the second connecting rod 6 is fixedly connected to the rear seat plate 22; The rear seat plate 22, the upper rod 41 of the rear bracket and the third connecting rod 7 are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis.
[0079] The other end of the fourth link 200 can be rotatably connected to the lower link 42 of the rear bracket.
[0080] The seat structure 2 may be part of the existing seat assembly on the frame, and the seat assembly may also include a back panel for the child to lie down. This embodiment does not limit this.
[0081] The seat structure 2 consists of a front seat plate 21 and a rear seat plate 22. The description assumes the trolley is folded and placed vertically; in this configuration, the seat structure 2 is equivalent to a bent structure (see...). Figure 3 , Figure 6 This reduces the vertical space occupied by the stroller, thereby reducing the vertical space required by the stroller and improving the convenience of storage after folding.
[0082] Preferably, the front seat plate 21 and the rear seat plate 22 have the same length.
[0083] Preferably, the other end of the fourth link 200 is rotatably connected to the front support structure 3. The fourth link 200 can rotate about the first axis.
[0084] It should be noted that the attached drawings show a preferred trolley structure for this embodiment, but it is not limited thereto.
[0085] 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 stroller, characterized in that: include: Push rod structure (1), seat plate structure (2), front bracket structure (3), rear bracket structure (4), first connecting rod (5), second connecting rod (6), third connecting rod (7), first locking structure and second locking structure; The rear support structure (4) includes a rear support upper rod (41) and a rear support lower rod (42). The push rod structure (1), the front support structure (3) and the rear support lower rod (42) are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis; The seat plate structure (2), the upper rod of the rear support (41) and the third connecting rod (7) are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis; The end of the upper rod (41) of the rear support away from the seat plate structure (2) is rotatably connected to the end of the lower rod (42) of the rear support away from the push rod structure (1); One end of the first connecting rod (5) is fixedly connected to the front support structure (3), the other end of the first connecting rod (5) is rotatably connected to one end of the second connecting rod (6), and the other end of the second connecting rod (6) is fixedly connected to the seat plate structure (2); One end of the first locking structure acts on the first link (5), and the other end acts on the second link (6); the first locking structure serves as a mechanism that can restrict the first link (5) and the second link (6) from rotating relative to each other; The end of the third link (7) away from the seat plate structure (2) is rotatably connected to the push rod structure (1); One end of the second locking structure acts on the third link (7), and the other end acts on the push rod structure (1); the second locking structure serves as a mechanism that can restrict the relative rotation of the third link (7) and the push rod structure (1).
2. A stroller according to claim 1, characterized in that: A slider (8) is slidably connected to the push rod structure (1), and the end of the third connecting rod (7) away from the seat plate structure (2) is rotatably connected to the push rod structure (1) through the slider (8); One end of the second locking structure acts on the third link (7) through the slider (8).
3. A stroller according to claim 2, characterized in that: A handle (9) is slidably connected to the push rod structure (1). The handle (9) can drive the second locking structure to move part of the slider (8) to release the second locking structure from locking the slider (8) and the push rod structure (1).
4. A stroller according to claim 2, wherein: The push rod structure (1) includes an upper push rod (11) and a lower push rod (12) that rotate relative to each other. The push rod structure (1), the front support structure (3) and the lower push rod (12) are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis; The slider (8) is slidably connected to the upper push rod (11). The other end of the second locking structure acts on the upper push rod (11).
5. A stroller according to claim 1, characterized in that: A push handle (10) is rotatably connected to one end of the push rod structure (1) away from the front support structure (3). It also includes a third locking structure, one end of which acts on the push rod structure (1) and the other end of which acts on the push handle (10); the third locking structure serves as a mechanism that can restrict the push rod structure (1) and the push handle (10) from rotating relative to each other.
6. A stroller according to claim 5, characterized in that: It also includes an unlocking component (100), one end of which acts on the push handle (10) and the other end of which acts on the third locking structure; the unlocking component (100) is a component that can release the third locking structure from locking the push rod structure (1) and the push handle (10).
7. A stroller according to claim 1, characterized in that: The seat structure (2) includes a front seat plate (21) and a rear seat plate (22) that are rotatably connected. It also includes a fourth link (200), one end of which is rotatably connected to the front seat plate (21), and the other end is rotatably connected to the front support structure (3) or the rear support structure (4); The other end of the second connecting rod (6) is fixedly connected to the rear seat plate (22); The rear seat plate (22), the upper rod of the rear support (41) and the third connecting rod (7) are rotatably arranged relative to each other, and at least two of the three can rotate around the same axis.