A stroller

Abstract

The utility model provides a kind of baby stroller belongs to baby products technical field, including push rod assembly, the front leg assembly of being arranged in the bottom of push rod assembly, the rear leg assembly of being arranged in the one side of front leg assembly, seat pull rod is symmetrically arranged in the inside of the seat rod of being arranged in the bottom of push rod assembly.Two roots The utility model realizes the convenient operation of baby stroller unfolding and folding by the linkage design of parallelogram structure and the locking mechanism of center joint, reduces the step of manual operation, and user can realize the synchronous linkage of front and rear leg assembly according to the action of push rod assembly, push rod assembly is turned up and drives front leg assembly and rear leg assembly to be unfolded synchronously, push rod assembly is turned down and drives front leg assembly to be folded, then make rear leg assembly be automatically folded under the action of gravity by bracing bar, effectively reduce the operation difficulty of baby carriage folding and unfolding, guarantee the stability of car frame structure simultaneously, satisfy the demand of baby carriage portable use of user.

Description

Technical Field

[0001] This utility model belongs to the field of infant and toddler products technology, specifically relating to a baby stroller. Background Technology

[0002] In recent years, with the improvement of living standards and the change of parenting concepts, baby strollers have become an important tool for infants and young children to travel daily. They are usually composed of a frame, seat, front and rear leg components and wheels, and are mainly used to make it convenient for parents to take their infants and young children out. Modern baby strollers are often designed with folding functions to make them easy for users to store and carry.

[0003] Traditional baby strollers are cumbersome to fold and unfold, especially during unfolding. The front and rear leg components cannot be unfolded in one operation, requiring further operation to unfold the front (or rear) legs, which causes a lot of inconvenience to users. Some more advanced folding strollers can unfold the front and rear leg components in a coordinated manner, but they are often complex in structure and have higher production costs. Utility Model Content

[0004] The purpose of this invention is to provide a baby stroller that addresses the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A baby stroller, including,

[0007] The push rod assembly includes a front leg assembly located at the bottom of the push rod assembly, a rear leg assembly located on one side of the front leg assembly, a seat post located at the bottom of the push rod assembly, two seat pull rods symmetrically arranged inside the seat posts, an outer connecting piece located on one side of the seat pull rod, an inner connecting piece located on the other side of the seat pull rod, and a support rod located between the two rear leg assemblies.

[0008] As a preferred embodiment of this utility model, the push rod assembly has push rod joints symmetrically arranged at its bottom, and the inner cavity of the push rod joint has a plurality of transmission bosses arranged in a circular array.

[0009] As a preferred embodiment of this utility model, the front leg assembly is symmetrically provided with front leg joints at the top, the inner cavity of the front leg joint is provided with a transmission gear, and a hinge hole is provided on one side of the top of the front leg joint.

[0010] As a preferred embodiment of this utility model, the hind leg assembly is symmetrically provided with hind leg joints at the top, and a cavity structure is provided on one side of the hind leg joint.

[0011] In a preferred embodiment of this utility model, the front leg joint and the rear leg joint are sequentially hinged to the push rod joint.

[0012] In a preferred embodiment of this utility model, both ends of the seat post are hinged to the two sides of the lower part of the push rod assembly, and both ends of the seat post are respectively hinged to the top of the seat pull rod.

[0013] In a preferred embodiment of this utility model, the bottom of the inner connecting piece is hinged to the bottom of the seat pull rod, the middle part of the seat pull rod is hinged to the bottom of the outer connecting piece, and the top of the outer connecting piece is hinged to the hinge hole.

[0014] In a preferred embodiment of this invention, the top of the inner connecting piece is hinged to the pivot of the hind leg joint.

[0015] As a preferred embodiment of this utility model, the hinge point of the seat post and push rod assembly, the hinge point b of the seat post and seat pull rod, the hinge point c of the seat pull rod and the outer connecting piece, and the hinge point z of the outer connecting piece and the hinge hole together constitute a first parallelogram structure.

[0016] As a preferred embodiment of this utility model, the hinge point x between the rear leg joint and the inner connecting piece, the hinge point y between the inner connecting piece and the seat pull rod, the hinge point z between the outer connecting piece and the hinge hole, and the hinge point c between the seat pull rod and the outer connecting piece together constitute a second parallelogram structure.

[0017] Compared with the prior art, the beneficial effects of this utility model 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 stroller is realized, reducing the steps of manual operation. Users can realize the synchronous linkage of the front and rear leg components according to the movement of the push rod assembly. When the push rod assembly flips up, it drives the front and rear leg components to unfold synchronously. When the push rod assembly flips down, it drives the front leg component to fold up. Then, through the support rod, the rear leg component automatically folds up under the action of gravity. This effectively reduces the difficulty of folding and unfolding the stroller, while ensuring the stability of the frame structure and meeting the user's needs for portable use of the stroller. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0021] Figure 3 This is a partial schematic diagram of the overall structure of this utility model;

[0022] Figure 4 This is a partial schematic diagram of the overall structure of this utility model from another angle;

[0023] Figure 5 This is a schematic diagram of the folding and storage process of this utility model;

[0024] Figure 6 This is a schematic diagram of the unfolding process of this utility model.

[0025] In the diagram: 1. Push rod assembly; 1-1. Push rod joint; 2. Front leg assembly; 2-1. Front leg joint; 2-2. Hinge hole; 3. Rear leg assembly; 3-1. Rear leg joint; 3-2. Cavity structure; 4. Seat post; 5. Seat pull rod; 6. Outer connecting plate; 7. Inner connecting plate; 8. Support rod. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Example 1

[0030] Reference Figure 1-6 This is the first embodiment of the present invention, which provides a baby stroller, including,

[0031] The push rod assembly 1, the front leg assembly 2 located at the bottom of the push rod assembly 1, the rear leg assembly 3 located on one side of the front leg assembly 2, the seat post 4 located at the bottom of the push rod assembly 1, the two seat pull rods 5 symmetrically located inside the seat post 4, the outer connecting piece 6 located on one side of the seat pull rod 5, and the support rod 8 located between the two rear leg assemblies 3.

[0032] It should be noted that the bottom of both the front leg assembly 2 and the rear leg assembly 3 is equipped with wheels for moving the stroller. The seat post 4 is used to support the seat part of the stroller. The seat pull rod 5 connects the seat post 4 and the outer connecting piece 6 and is the core component of the double parallelogram linkage mechanism. The support rod 8 connects the left and right rear leg assemblies 3 to enhance the stability of the frame and is used as a handle when folded.

[0033] Specifically, the bottom of the push rod assembly 1 is symmetrically provided with push rod joints 1-1, and the inner cavity of the push rod joints 1-1 has a number of transmission bosses arranged in a circular array.

[0034] Furthermore, the front leg assembly 2 is symmetrically provided with a front leg joint 2-1 on the top, the inner cavity of the front leg joint 2-1 is provided with a transmission gear, and a hinge hole 2-2 is provided on one side of the top of the front leg joint 2-1.

[0035] Among them, the rear leg assembly 3 has a symmetrical rear leg joint 3-1 on the top, and a cavity structure 3-2 is provided on one side of the rear leg joint 3-1.

[0036] Preferably, the front leg joint 2-1 and the rear leg joint 3-1 are sequentially hinged to the push rod joint 1-1.

[0037] It should be noted that the front leg joint 2-1 and the rear leg joint 3-1 are sequentially hinged to the push rod joint 1-1 to form a central joint. The central joint is locked and unlocked by the cooperation of the internal transmission boss and transmission gear. When the push rod assembly 1 is pushed, the transmission boss disengages from the gear, allowing the front leg assembly 2 and the rear leg assembly 3 to rotate, thereby enabling the stroller to be folded or unfolded, thus realizing mutual rotation and anti-rotation between the joints.

[0038] Specifically, both ends of the seat post 4 are hinged to the two sides of the lower part of the push rod assembly 1, and both ends of the seat post 4 are hinged to the top of the seat pull rod 5.

[0039] Furthermore, 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.

[0040] Preferably, the hinge point a between the seat post 4 and the push rod assembly 1, the hinge point b between the seat post 4 and the seat pull rod 5, the hinge point c between the seat pull rod 5 and the outer connecting piece 6, and the hinge point z between the outer connecting piece 6 and the hinge hole 2-2 together constitute the first parallelogram structure.

[0041] It should be noted that there are two hinge points at each end of the seat rod 4. When the device is not folded, it can stably support the seat of the stroller. When the push rod assembly 1 is folded forward, it drives the seat pull rod 5 to move. When the seat pull rod 5 moves, it drives the outer connecting piece 6 to rotate. The outer connecting piece 6 drives the front leg joint 2-1 to rotate around the axis of the central joint through the hinge hole 2-2, which finally realizes the folding of the front leg assembly 2.

[0042] When the device needs to be folded and stored during use, the user pushes the push rod assembly 1 downwards to disengage the transmission boss of the push rod joint 1-1 from the transmission gear of the front leg joint 2-1, unlocking the central joint. Then, the push rod assembly 1 is folded forward. Through the linkage of the first parallelogram structure abcz, the seat rod 4 drives the seat pull rod 5 to move. When the seat pull rod 5 moves, it drives the outer connecting piece 6 to rotate, which in turn drives the front leg assembly 2 to rotate around the axis of the central joint through the hinge hole 2-2, realizing the linkage folding of the front leg assembly 2. Then, the user lifts the support rod 8 to lift the device. The rear leg assembly 3 is folded up under the action of gravity, and the entire device is closed into a flat state for easy storage and carrying.

[0043] When the device needs to be unfolded, first manually unfold the rear leg assembly 3, then fold the push rod assembly 1 upwards. The push rod assembly 1 drives the seat rod 4 to move, which in turn drives the seat pull rod 5 and the outer connecting piece 6 to move forward, so that the front leg assembly 2 unfolds forward. After unfolding to the correct position, lift the push rod assembly 1, lock the central joint, and complete the unfolding of the device.

[0044] In summary, this embodiment achieves the linkage between the front leg assembly 2 and the push rod assembly 1 through the coordinated operation of components such as the push rod assembly 1 and the front leg assembly 2, and realizes the linkage between the front leg assembly 2 and the push rod assembly 1 by means of the first parallelogram structure. The locking and unlocking mechanism of the central joint ensures the stability of operation. The support rod 8 enhances the structural strength of the device while simplifying the folding and storage process of the rear leg assembly 3, thus realizing the convenient unfolding and folding of the stroller.

[0045] Example 2

[0046] Reference Figure 3-6 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an inner connecting piece 7 for a baby stroller, based on embodiment 1. This solves the problem that the rear leg assembly cannot be deployed together with the baby stroller when it is unfolded. This device also includes...

[0047] The inner connecting piece 7 is located on the other side of the seat pull rod 5.

[0048] 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 abut against the side wall of the cavity structure 3-2, thereby driving the rear leg assembly 3 to unfold to the correct position synchronously, which also makes the overall structure of the device more compact.

[0049] Furthermore, the bottom of the inner connecting piece 7 is hinged to the bottom of the seat pull rod 5.

[0050] Furthermore, the top of the inner connecting piece 7 is hinged to the pivot of the hind leg joint 3-1.

[0051] Among them, the hinge point x between the rear leg joint 3-1 and the inner connecting piece 7, the hinge point y between the inner connecting piece 7 and the seat pull rod 5, the hinge point z between the outer connecting piece 6 and the hinge hole 2-2, and the hinge point c between the seat pull rod 5 and the outer connecting piece 6 together constitute the second parallelogram structure.

[0052] It should be noted that when the push rod assembly 1 is flipped 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, which is hinged to the seat pull rod 5, is pulled, and the front leg assembly 2 gradually unfolds 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. The inner connecting piece 7 rotates around the hinge x axis. During the rotation, the inner connecting piece 7 moves within the cavity structure 3-2 of the rear leg joint 3-1. When the inner connecting piece 7 contacts the baffle of the cavity structure 3-2, it pushes the rear leg joint 3-1 to rotate around the axis of the central joint, causing the rear leg assembly 3 to unfold. This ensures that the rear leg assembly 3 and the front leg assembly 2 move synchronously and unfold in conjunction.

[0053] When in use, when unfolding the frame, flip up the push rod assembly 1. After the central joint is unlocked, the seat post 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 about the hinge point x. When the inner connecting piece 7 abuts against the wall of the cavity structure 3-2, it pushes the rear leg joint 3-1 to rotate, realizing the synchronous unfolding of the rear leg assembly 3 and the front leg assembly 2. After unfolding to the full position, lift up the push rod assembly 1, the central joint is locked, and the rear leg assembly 3 and the front leg assembly 2 can stably support the frame.

[0054] When folding, push the push rod assembly 1 downward to unlock, then fold it forward, causing the front leg assembly 2 to retract. During this process, the inner connecting piece 7 does not contact the baffle of the cavity structure 3-2. Lift the support rod 8 upward, and the rear leg assembly 3 retracts under the action of gravity, completing the folding of the device.

[0055] In summary, this embodiment adds an inner connecting piece 7 to the original embodiment 1, forming a second parallelogram structure. Through the cooperation of the inner connecting piece 7 and the cavity structure 3-2, the rear leg assembly 3 and the front leg assembly 2 can be opened synchronously, solving the inconvenience of the rear legs needing to be opened separately. The double parallelogram structure makes the overall movement more coordinated and the structure more compact after folding, further improving the stroller's storage convenience and structural stability.

[0056] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0057] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0058] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

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

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

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

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

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

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

7. A 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 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).

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

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

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

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