Baby stroller

Abstract

The invention relates to the technical field of infant products, and discloses a baby stroller which comprises a push rod assembly, a front leg assembly arranged at the bottom of the push rod assembly, a rear leg assembly arranged on one side of the front leg assembly, a seat rod arranged at the bottom of the push rod assembly and two seat pull rods symmetrically arranged on the inner side of the seat rod. Through the linkage design of the parallelogram structure and the locking mechanism of the center joint, convenient operation of unfolding and folding of the baby stroller is achieved, the step of manual operation is reduced, a user can achieve synchronous linkage of the front leg assembly and the rear leg assembly according to the action of the push rod assembly, and the user experience is improved. The push rod assembly is turned upwards to drive the front leg assembly and the rear leg assembly to be unfolded synchronously, the push rod assembly is turned downwards to drive the front leg assembly to be folded, then the rear leg assembly is automatically folded under the action of gravity through the supporting rod, the operation difficulty of folding and unfolding of the baby carriage is effectively reduced, and meanwhile the stability of the carriage frame structure is guaranteed. And the requirement of a user on portable use of the baby carriage is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of infant products, and particularly relates to a baby stroller. BACKGROUND

[0002] In recent years, with the improvement of living standards and the change of child-rearing concepts, baby strollers have become an important tool for daily travel of infants and young children. The baby stroller is usually composed of a frame, a seat, front and rear leg assemblies, and wheels, and is mainly used for facilitating parents to carry infants and young children outside. Modern baby strollers are often designed with folding functions to facilitate users to store and carry.

[0003] The traditional baby stroller is relatively cumbersome to operate when folding and unfolding, especially in the unfolding process. The front leg assembly and the rear leg assembly cannot be linked and unfolded by one operation, and further operation is required to unfold the front (rear) leg, which brings much inconvenience to users. Some more advanced folding strollers can link and unfold the front and rear leg assemblies, but the structure is often complex and the production cost is high. SUMMARY

[0004] In view of the above problems of the prior art, the present application is proposed.

[0005] Therefore, the present application aims to provide a baby stroller.

[0006] To solve the above technical problems, the present application provides the following technical scheme: comprising,

[0007] The push rod assembly, the front leg assembly arranged at the bottom of the push rod assembly, the rear leg assembly arranged at one side of the front leg assembly, the seat rod arranged at the bottom of the push rod assembly, the two seat rods symmetrically arranged inside the seat rod, the outer connecting piece arranged at one side of the seat rod, the inner connecting piece arranged at the other side of the seat rod, and the supporting rod arranged between the two rear leg assemblies.

[0008] As a preferred scheme of the baby stroller, the bottom of the push rod assembly is symmetrically provided with a push rod joint, and the inner cavity of the push rod joint is circumferentially provided with a plurality of transmission bosses.

[0009] As a preferred scheme of the baby stroller, the top of the front leg assembly is symmetrically provided with a front leg joint, the inner cavity of the front leg joint is provided with a transmission gear, and the top of the front leg joint is provided with a hinge hole on one side.

[0010] As a preferred scheme of the baby stroller, the top of the rear leg assembly is symmetrically provided with a rear leg joint, and one side of the rear leg joint is provided with a cavity structure.

[0011] As a preferred solution of the baby stroller of the present invention, the front leg joints and the rear leg joints are hinged to the push rod joints in a stacked manner.

[0012] As a preferred solution of the baby stroller described in the present invention, both ends of the seat rod are hinged to both sides of the lower part of the push rod assembly, and both ends of the seat rod are respectively hinged to the top of the seat pull rod.

[0013] As a preferred solution of the baby stroller described in the present invention, the bottom of the inner connecting plate is hinged to the bottom of the seat pull rod, the middle of the seat pull rod is hinged to the bottom of the outer connecting plate, and the top of the outer connecting plate is hinged to the hinge hole.

[0014] As a preferred solution of the baby stroller described in the present invention, the top of the inner connecting plate is hinged to the rotating shaft of the rear leg joint.

[0015] As a preferred embodiment of the baby stroller described in the present invention, the hinge point of the seat rod and the push rod assembly, the hinge point b of the seat rod and the seat pull rod, the hinge point c of the seat pull rod and the outer connecting plate, and the hinge point z of the outer connecting plate and the hinge hole together constitute a first parallelogram structure.

[0016] As a preferred embodiment of the baby stroller described in the present invention, the hinge point x between the rear leg joint and the inner connecting plate, the hinge point y between the inner connecting plate and the seat pull rod, the hinge point z between the outer connecting plate and the hinge hole, and the hinge point c between the seat pull rod and the outer connecting plate together constitute a second parallelogram structure.

[0017] The beneficial effects of the present invention are as follows: through the linkage design of the parallelogram structure and the locking mechanism of the central joint, the convenient operation of unfolding and folding the baby stroller is realized, and the steps of manual operation are reduced. The user can realize the synchronous linkage of the front and rear leg assemblies according to the action of the push rod assembly. The push rod assembly flips up to drive the front leg assembly and the rear leg assembly to unfold synchronously, and the push rod assembly flips down to drive the front leg assembly to fold up, and then the rear leg assembly is automatically folded under the action of gravity through the support rod, which effectively reduces the difficulty of folding and unfolding the baby stroller, while ensuring the stability of the frame structure, meeting the user's demand for portable use of the baby stroller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0019] Figure 1The overall structure of the present application is shown in the schematic diagram.

[0020] Figure 2 The overall structure of another aspect of the present application is shown in the schematic diagram.

[0021] Figure 3 The overall structure of the present application is shown in the schematic diagram.

[0022] Figure 4 The overall structure of another aspect of the present application is shown in the schematic diagram.

[0023] Figure 5 The folding storage process of the present application is shown in the schematic diagram.

[0024] Figure 6 The unfolding process of the present application is shown in the schematic diagram.

[0025] In the figure: 1, push rod assembly; 1-1, push rod joint; 2, front leg assembly; 2-1, front leg joint; 2-2, hinged hole; 3, rear leg assembly; 3-1, rear leg joint; 3-2, cavity structure; 4, seat rod; 5, seat pull rod; 6, outer connecting piece; 7, inner connecting piece; 8, support rod. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0027] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0028] Secondly, "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0029] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0030] Example 1

[0031] Reference Figures 1-6For the first embodiment of the present application, a baby stroller is provided, the device comprises.

[0032] The push rod assembly 1, the front leg assembly 2 arranged at the bottom of the push rod assembly 1, the rear leg assembly 3 arranged at one side of the front leg assembly 2, the seat rod 4 arranged at the bottom of the push rod assembly 1, the seat pull rod 5 symmetrically arranged at the inner side of the seat rod 4, the outer connecting piece 6 arranged at one side of the seat pull rod 5, and the supporting rod 8 arranged between the two rear leg assemblies 3.

[0033] It should be noted that the bottom of the front leg assembly 2 and the rear leg assembly 3 is provided with wheels for moving the baby stroller, the seat rod 4 is used to support the seat part of the baby stroller, the seat pull rod 5 connects the seat rod 4 and the outer connecting piece 6, and is the core component of the double parallelogram linkage mechanism, the supporting rod 8 connects the left and right two rear leg assemblies 3, and is used to enhance the stability of the frame and serve as a handle when folding.

[0034] Specifically, the push rod assembly 1 is symmetrically provided with a push rod joint 1-1 at the bottom, and the inner cavity of the push rod joint 1-1 is circumferentially provided with a plurality of transmission bosses.

[0035] Further, the front leg assembly 2 is symmetrically provided with a front leg joint 2-1 at the top, and the inner cavity of the front leg joint 2-1 is provided with a transmission gear, and one side of the top of the front leg joint 2-1 is provided with a hinge hole 2-2.

[0036] Among them, the rear leg assembly 3 is symmetrically provided with a rear leg joint 3-1 at the top, and one side of the rear leg joint 3-1 is provided with a cavity structure 3-2.

[0037] Preferably, the front leg joint 2-1 and the rear leg joint 3-1 are sequentially and laminatedly hinged with the push rod joint 1-1.

[0038] It should be noted that the front leg joint 2-1 and the rear leg joint 3-1 are sequentially and laminatedly hinged with the push rod joint 1-1 to form a center joint, and the locking and unlocking of the center joint are realized through the mutual cooperation of the internal transmission bosses and the transmission gears. When the push rod assembly 1 is pushed, the transmission bosses and the gears are separated, allowing the front leg assembly 2 and the rear leg assembly 3 to rotate, realizing the folding or unfolding of the baby stroller, and thus realizing the mutual rotation and rotation of the joints.

[0039] Specifically, the seat rod 4 is hinged at both ends to the two sides of the lower part of the push rod assembly 1, and the two ends of the seat rod 4 are respectively hinged to the top of the seat pull rod 5.

[0040] Further, the middle part of the seat pull rod 5 is hinged to the bottom of the outer connecting piece 6, and the top of the outer connecting piece 6 is hinged to the hinge hole 2-2.

[0041] Preferably, the hinge point a of the push rod assembly 1, the hinge point b of the seat rod 4 and the seat rod 5, the hinge point c of the seat rod 5 and the outer connecting plate 6, and the hinge point z of the outer connecting plate 6 and the hinge hole 2-2 jointly form a first parallelogram structure.

[0042] It should be noted that the seat rod 4 has two hinge points at both ends, which can stably support the seat part of the stroller when the device is unfolded, and when the push rod assembly 1 is folded forward, it drives the seat rod 5 to move, and the seat rod 5 drives the outer connecting plate 6 to rotate, and the outer connecting plate 6 drives the front leg joint 2-1 to rotate around the rotating shaft of the center joint through the hinge hole 2-2, and finally realizes the folding of the front leg assembly 2.

[0043] In use, when the device needs to be folded for storage, the user pushes the push rod assembly 1 downward, so that the transmission boss of the push rod joint 1-1 is separated from the transmission gear of the front leg joint 2-1, and the center joint is unlocked, then the push rod assembly 1 is folded forward, through the linkage action of the first parallelogram structure a-b-c-z, the seat rod 4 drives the seat rod 5 to move, and the seat rod 5 drives the outer connecting plate 6 to rotate, and then drives the front leg assembly 2 to rotate around the rotating shaft of the center joint through the hinge hole 2-2, realizing the linkage folding of the front leg assembly 2, then lifting the supporting rod 8 to lift the device, the rear leg assembly 3 is folded under the action of gravity, and the whole device is folded into a flat state, which is convenient for storage and carrying;

[0044] When the device needs to be unfolded, first manually unfold the rear leg assembly 3, then fold the push rod assembly 1 upward, the push rod assembly 1 drives the seat rod 4 to move, and then drives the seat rod 5 and the outer connecting plate 6 to link, so that the front leg assembly 2 is unfolded forward, and after unfolding in place, the push rod assembly 1 is lifted, the center joint is locked, and the unfolding of the device is completed.

[0045] In summary, through the cooperation of the push rod assembly 1, the front leg assembly 2 and other components, the linkage of the front leg assembly 2 and the push rod assembly 1 is realized by means of the first parallelogram structure, the locking and unlocking mechanism of the center joint ensures the stability of the operation, the supporting rod 8 enhances the structural strength of the device while simplifying the folding and storage process of the rear leg assembly 3, and the convenient unfolding and folding of the stroller is realized.

[0046] Embodiment 2

[0047] Reference Figures 3-6 The second embodiment of the present application is different from the first embodiment in that the embodiment provides an inner connecting plate 7 for the stroller on the basis of the first embodiment, which solves the problem that the rear leg assembly cannot be unfolded together when the stroller is unfolded, and the device further comprises,

[0048] The inner connecting plate 7 is arranged on the other side of the seat rod 5.

[0049] It should be noted that the inner connecting piece 7 cooperates with the cavity structure 3-2, when the device is unfolded, the inner connecting piece 7 can drive the rear leg assembly 3 to unfold synchronously to the correct position by abutting against the side wall of the cavity structure 3-2, and at the same time, the overall structure of the device is more compact.

[0050] Further, the bottom of the inner connecting piece 7 is hinged to the bottom of the seat pull rod 5.

[0051] Further, the top of the inner connecting piece 7 is hinged to the pivot of the rear leg joint 3-1.

[0052] The hinge points x of the rear leg joint 3-1 and the inner connecting piece 7, the hinge point y of the inner connecting piece 7 and the seat pull rod 5, the hinge point z of the outer connecting piece 6 and the hinge hole 2-2, and the hinge point c of the seat pull rod 5 and the outer connecting piece 6 together form a second parallelogram structure.

[0053] It should be noted that when the push rod assembly 1 is turned up, the seat rod 4 moves with the push rod assembly 1, and drives the seat pull rod 5 to move through the hinge point b. The outer connecting piece 6 hinged to the seat pull rod 5 is pulled, and the front leg assembly 2 is gradually unfolded through the hinge point z. At the same time, the movement of the seat pull rod 5 pulls the inner connecting piece 7 through the hinge point y, and the inner connecting piece 7 rotates around the hinge x. In the rotation process, the inner connecting piece 7 moves in the cavity structure 3-2 of the rear leg joint 3-1. When the inner connecting piece 7 contacts the blocking wall of the cavity structure 3-2, it pushes the rear leg joint 3-1 to rotate around the pivot of the center joint, so that the rear leg assembly 3 is unfolded, ensuring that the rear leg assembly 3 and the front leg assembly 2 move synchronously to realize linkage unfolding.

[0054] In use, the push rod assembly 1 is turned up when the frame is unfolded. After the center joint is unlocked, the seat rod 4 moves with the push rod assembly 1 and drives the front leg assembly 2 to unfold forward through the first parallelogram structure. At the same time, the seat pull rod 5 pulls the inner connecting piece 7 through the hinge point y, so that it rotates in the cavity structure 3-2 of the rear leg joint 3-1 around the hinge point x. When the inner connecting piece 7 abuts against the blocking wall of the cavity structure 3-2, it pushes the rear leg joint 3-1 to rotate, realizing synchronous unfolding of the rear leg assembly 3 and the front leg assembly 2. After unfolding to the position, the push rod assembly 1 is lifted up, the center joint is locked, and the rear leg assembly 3 and the front leg assembly 2 can stably support the frame.

[0055] When folding, the push rod assembly 1 is unlocked by being pushed down, and then it is folded forward to drive the front leg assembly 2 to be folded. In this process, the inner connecting piece 7 does not contact the blocking wall of the cavity structure 3-2, the support rod 8 is lifted up, the rear leg assembly 3 is folded under the action of gravity, and the folding of the device is completed.

[0056] In summary, the embodiment adds the inner connecting piece 7 on the basis of the embodiment 1, forms the second parallelogram structure, and realizes the synchronous linkage expansion of the rear leg assembly 3 and the front leg assembly 2 through the cooperation of the inner connecting piece 7 and the cavity structure 3-2, solves the inconvenience of the separate expansion of the rear leg, the double parallelogram structures make the overall action more coordinated, the structure is more compact after folding, and the storage convenience and structural stability of the baby stroller are further improved.

[0057] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various exemplary embodiments are by way of illustration only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functions and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the application as expressed in the appended claims. Accordingly, the application is not limited to the particular embodiments described and illustrated herein, but is intended to cover all modifications that are within the scope of the appended claims.

[0058] Also, to provide a concise description of exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the best mode for carrying out the application, or those that are apparent upon inspection of the drawings, or those that are known in the art) can not be described in detail.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A baby stroller, characterized in that: include, A push rod assembly (1), a front leg assembly (2) arranged at the bottom of the push rod assembly (1), a rear leg assembly (3) arranged on one side of the front leg assembly (2), a seat rod (4) arranged at the bottom of the push rod assembly (1), two seat pull rods (5) symmetrically arranged on the inner sides of the seat rod (4), an outer connecting piece (6) arranged on one side of the seat pull rod (5), an inner connecting piece (7) arranged on the other side of the seat pull rod (5), and a support rod (8) arranged between the two rear leg assemblies (3).

2. A baby stroller according to claim 1, characterized in that: A push rod joint (1-1) is symmetrically arranged at the bottom of the push rod assembly (1), and a plurality of transmission bosses are arranged in a circular array in the inner cavity of the push rod joint (1-1).

3. The baby stroller according to claim 2, characterized in that: A front leg joint (2-1) is symmetrically arranged on the top of the front leg assembly (2), a transmission gear is arranged in the inner cavity of the front leg joint (2-1), and a hinge hole (2-2) is arranged on one side of the top of the front leg joint (2-1).

4. The baby stroller according to claim 3, characterized in that: A hind leg joint (3-1) is symmetrically arranged on the top of the hind leg assembly (3), and a cavity structure (3-2) is arranged on one side of the hind leg joint (3-1).

5. The baby stroller according to claim 4, characterized in that: The front leg joint (2-1) and the hind leg joint (3-1) are stacked and hinged with the push rod joint (1-1) in sequence.

6. The baby stroller according to claim 5, characterized in that: Both ends of the seat rod (4) are hinged to the two sides of the lower part of the push rod assembly (1), and both ends of the seat rod (4) are hinged to the top of the seat pull rod (5) respectively.

7. The baby stroller according to claim 6, characterized in that: The bottom of the inner connecting piece (7) is hinged to the bottom of the seat pull rod (5), the middle of the seat pull rod (5) is hinged to the bottom of the outer connecting piece (6), and the top of the outer connecting piece (6) is hinged to the hinge hole (2-2).

8. The baby stroller according to claim 7, characterized in that: The top of the inner connecting plate (7) is hinged to the rotating shaft of the hind leg joint (3-1).

9. The baby stroller according to claim 8, characterized in that: The hinge point (a) between the seat rod (4) and the push rod assembly (1), the hinge point (b) between the seat rod (4) and the seat pull rod (5), the hinge point (c) between the seat pull rod (5) and the outer connecting plate (6), and the hinge point (z) between the outer connecting plate (6) and the hinge hole (2-2) together form a first parallelogram structure.

10. The baby stroller according to claim 9, characterized in that: The hinge point (x) between the hind leg joint (3-1) and the inner connecting plate (7), the hinge point (y) between the inner connecting plate (7) and the seat pull rod (5), the hinge point (z) between the outer connecting plate (6) and the hinge hole (2-2), and the hinge point (c) between the seat pull rod (5) and the outer connecting plate (6) together constitute a second parallelogram structure.

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