Foldable baby carriage frame

Abstract

The foldable stroller frame comprises a front support, a rear support and a push rod assembly, the upper portion of the rear support and the upper portion of the front support are rotationally connected with the lower portion of the push rod assembly, the stroller frame further comprises a connecting piece, the rear portion of the connecting piece is fixedly connected with the rear support, and the rear portion of the connecting piece is fixedly connected with the push rod assembly. The front part of the connecting sheet is rotationally and slidably connected with the front bracket through a rotating shaft; the folding mechanism is novel and simple in structure, folding linkage is achieved through rotation and sliding fit of the rotating shaft on the connecting piece fixedly arranged on the rear support and the front support, the front support can be synchronously driven to be folded relative to the rear support when the push rod assembly is folded relative to the rear support, rapid folding of the whole bicycle can be achieved, the overall structure is compact after folding, and the folding efficiency is improved. The size is smaller, and carrying and storage are facilitated when people go out.

Description

Technical Field

[0001] This application relates to the field of children's vehicle technology, and more particularly to a foldable children's vehicle frame. Background Technology

[0002] Existing strollers are functional vehicles designed to facilitate infants' outdoor activities. They serve as a means of transportation for babies and are essential for infant care. With rising living standards, foldable strollers are increasingly popular due to their portability. However, many strollers on the market still take up considerable space when folded. Therefore, there is a need for strollers with better folding efficiency, saving storage space and offering greater ease of use and portability. Summary of the Invention

[0003] The purpose of this application is to provide a foldable stroller frame with a novel and simple structure that allows for quick folding of the entire stroller. After folding, the overall structure is compact and smaller in size, making it easy to carry and store when going out.

[0004] The technical solution of this application is: a foldable stroller frame, including a front support, a rear support, and a push rod assembly. The upper part of the rear support and the upper part of the front support are rotatably connected to the lower part of the push rod assembly. The frame also includes a connecting piece. The rear part of the connecting piece is fixedly connected to the rear support, and the front part of the connecting piece is rotatably and slidably connected to the front support via a rotating shaft. When the frame is folded, the push rod assembly rotates backward and retracts relative to the rear support. The connecting piece, through the rotation and sliding cooperation of the rotating shaft with the front support, drives the front support to rotate backward and retract relative to the rear support.

[0005] As a preferred technical solution, the upper part of the front bracket has a locking mechanism that can lock the rear bracket when the frame is in the unfolded position. Preferably, the locking mechanism includes a locking pin that can extend and retract in the left and right directions and an unlocking component for driving the locking pin to retract and unlock. The rear bracket has a locking groove that is opposite to the locking pin when the frame is in the unfolded position. The locking mechanism achieves the locking of the front bracket and the rear bracket through the insertion and cooperation of the locking pin and the locking groove.

[0006] As a preferred technical solution, the upper part of the front bracket has a guide groove arranged along its extension direction, and the rotating shaft extends into the guide groove and rotates and slides with the guide groove.

[0007] As a preferred technical solution, the lower part of the push rod assembly is fixedly provided with a connector, and the inner side of the connector is formed with a detachable mounting base for a seat or basket.

[0008] As a preferred technical solution, the lower part of the push rod assembly has a push rod connector, the upper part of the rear bracket has a rear bracket connector, and the upper part of the front bracket has a front bracket connector; the rear bracket is rotatably connected to the push rod connector via the rear bracket connector to achieve a rotatable connection with the push rod assembly; the connector is fixed inside the push rod connector; the lower end of the connector is sleeved to the upper end of the front bracket connector to achieve a rotatable connection between the push rod assembly and the front bracket.

[0009] As a preferred technical solution, the upper part of the push rod assembly has a push handle assembly that can extend, retract, or rotate relative to it.

[0010] Compared with the prior art, this application has the following advantages:

[0011] This application features a novel and simple structure. It achieves folding linkage by rotating and slidingly engaging the rotating shaft on the connecting piece fixed on the rear support with the rotation of the front support. When the push rod assembly retracts relative to the rear support, it can simultaneously drive the front support to retract relative to the rear support, enabling the entire vehicle to fold quickly. After folding, the overall structure is compact and smaller in size, making it convenient for carrying and storing when traveling. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0014] Figure 1 This is a three-dimensional structural diagram of the present application in its unfolded state;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure of a mid-rotation joint during disassembly.

[0016] Figure 3 This is a three-dimensional structural diagram of the rotating joint of this application when it is in the deployed state.

[0017] Figure 4 for Figure 3 A schematic diagram of the assembly structure;

[0018] Figure 5 for Figure 3 A schematic diagram of the outer surface of the central rotation joint;

[0019] Figure 6 for Figure 3 A schematic diagram of the structure of the inner surface of the rotational joint;

[0020] Figure 7 This is a three-dimensional structural diagram of the rotating joint of this application during the folding process;

[0021] Figure 8 for Figure 7 A schematic diagram of the outer surface of the central rotation joint;

[0022] Figure 9 for Figure 7 A schematic diagram of the structure of the inner surface of the rotational joint;

[0023] Figure 10 This is a three-dimensional structural diagram of the rotating joint of this application when it is in a folded state.

[0024] Figure 11 for Figure 10 A schematic diagram of the outer surface of the central rotation joint;

[0025] Figure 12 for Figure 10 A schematic diagram of the structure of the inner surface of the rotation joint.

[0026] Among them: 1. Front bracket; 101. Front bracket connector; 102. Guide groove;

[0027] 2 rear brackets; 201 rear bracket connector;

[0028] 3. Push rod assembly; 301 push rod connector;

[0029] 4 connecting pieces;

[0030] 5. Rotating shaft;

[0031] 6. Locking mechanism; 601. Locking pin; 602. Lock groove;

[0032] 7. Connectors; 701. Mounting base; 702. Sleeve;

[0033] 8. Push handle assembly. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0035] In the description of this application and the claims, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0036] In the description of this application and the claims, the terms "connection," "installation," "fixation," and "reception," unless otherwise specified, should be interpreted broadly. For example, "connection" can mean a separate connection or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean a non-detachable connection or a detachable connection. As another example, "reception" does not necessarily mean complete containment; this concept also includes the containment of a portion that protrudes externally. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application based on the specific circumstances.

[0037] In the description of this application and the claims, if terms such as "above," "below," or "horizontal" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, they are only for the purpose of clearly and simply describing this application, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. These directional terms are relative concepts used for relative description and clarification, and may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the drawings is flipped, an element described as "below" other elements will be positioned "above" other elements.

[0038] In the description of this application specification and claims, the term "if" is generally interchangeable with "when," "at," "in response to determination," or "in response to detection," depending on the context.

[0039] In the description of this application and the claims, if there is a "direction" of motion, including motion with a directional component, the term "in direction" is not necessarily understood as motion only in that one direction. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application according to the specific circumstances.

[0040] like Figures 1 to 12 As shown, a foldable children's stroller frame includes a front support 1 with a front wheel assembly mounted on its bottom, a rear support 2 with a rear wheel assembly mounted on its bottom, and a push rod assembly 3. The upper part of the rear support 2 and the upper part of the front support 1 are rotatably connected to the lower part of the push rod assembly 3, respectively. The frame also includes a connecting piece 4, the rear part of which is fixedly connected to the rear support 2, and the front part of which is rotatably and slidably connected to the front support 1 via a rotating shaft 5. When the frame is folded, the push rod assembly 3 rotates backward and retracts relative to the rear support 2. The connecting piece 4, through the rotation and sliding cooperation of the rotating shaft 5 with the front support 1, drives the front support 1 to rotate backward and retract relative to the rear support 2.

[0041] In this embodiment, the upper part of the front support 1 has a locking mechanism 6 that can lock the rear support when the frame is in the unfolded position. In this embodiment, the preferred locking mechanism 6 includes a locking pin 601 that can extend and retract laterally and an unlocking component for retracting the locking pin 601 to unlock it. The rear support 2 has a locking groove 602 that is opposite to the locking pin 601 when the frame is in the unfolded position. The locking mechanism 6 achieves the locking of the front support 1 and the rear support 2 through the insertion and engagement of the locking pin 601 and the locking groove 602. The above is only one embodiment of a conventional locking mechanism. Since locking mechanisms are conventional technology in this field and have various structures, no specific limitations or detailed descriptions are made here.

[0042] To facilitate the detachable assembly of the seat or basket, a connector 7 is fixedly provided at the lower part of the push rod assembly 3, and the inner side of the connector 7 forms a mounting seat 701 for the seat or basket to be inserted.

[0043] To facilitate vehicle assembly, the lower part of the push rod assembly 3 has a push rod connector 301, the upper part of the rear bracket 2 has a rear bracket connector 201, and the upper part of the front bracket 1 has a front bracket connector 101. The rear bracket 2 is rotatably connected to the push rod assembly 3 via the rear bracket connector 201 and the push rod connector 301. The connector 7 is fixed inside the push rod connector 301. The lower end of the connector 7 is sleeved with the upper end of the front bracket connector 101 via a sleeve 702 to achieve a rotatable connection between the push rod assembly 3 and the front bracket 1.

[0044] In this embodiment, the front bracket 1 has a guide groove 102 arranged along its extension direction on the front bracket 1 front bracket joint 101, and the rotating shaft 5 extends into the guide groove 102 and rotates and slides with the guide groove 102.

[0045] To further reduce the overall folded size of the vehicle, the upper part of the push rod assembly 3 has a push handle assembly 8 that can extend, retract, or rotate relative to it. In this embodiment, the push handle assembly 8 is preferably telescopically connected, which can better reduce the overall size of the folded vehicle.

[0046] This application has a novel and simple structure. It achieves folding linkage by rotating and sliding with the front support 1 through the rotating shaft 5 on the connecting piece 4 fixed on the rear support 2. When the push rod assembly 3 is folded relative to the rear support 2, it can simultaneously drive the front support 1 to fold relative to the rear support 2, which can realize the rapid folding of the whole vehicle. After folding, the overall structure is compact and smaller in size, making it easy to carry and store when going out.

[0047] As a preferred embodiment of this application, in the description of this specification, the reference to terms such as "preferred," "optional," etc., means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The above embodiments are only used to illustrate the detailed solutions of this application. This application is not limited to the above detailed solutions, that is, it does not mean that this application must rely on the above detailed solutions to be implemented. Those skilled in the art should understand that any improvements to this application, equivalent substitutions of the raw materials of the product of this application, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of this application.

Claims

1. A foldable stroller frame, comprising a front support, a rear support, and a push rod assembly, characterized in that: The upper part of the rear support and the upper part of the front support are rotatably connected to the lower part of the push rod assembly. The frame also includes a connecting piece, the rear part of which is fixedly connected to the rear support, and the front part of which is rotatably and slidably connected to the front support via a rotating shaft. When the frame is folded, the push rod assembly rotates backward and retracts relative to the rear support. The connecting piece, through the rotation and sliding cooperation of the rotating shaft with the front support, drives the front support to rotate backward and retract relative to the rear support.

2. The foldable stroller frame according to claim 1, characterized in that: The upper part of the front support has a locking mechanism that can lock the rear support when the frame is in the unfolded position.

3. The foldable stroller frame according to claim 2, characterized in that: The locking mechanism includes a locking pin that can extend and retract in the left and right directions and an unlocking component for driving the locking pin to retract and unlock. The rear bracket has a locking groove that is opposite to the locking pin when the frame is in the unfolded position. The locking mechanism achieves locking of the front bracket and the rear bracket by the insertion and cooperation of the locking pin and the locking groove.

4. The foldable stroller frame according to claim 1, characterized in that: The upper part of the front bracket has a guide groove arranged along its extension direction, and the rotating shaft extends into the guide groove and rotates and slides with the guide groove.

5. A foldable stroller frame according to claim 1, characterized in that: The lower part of the push rod assembly is fixed with a connector, and the inner side of the connector is formed with a detachable mounting base for a seat or basket.

6. A foldable stroller frame according to claim 5, characterized in that: The lower part of the push rod assembly has a push rod connector, the upper part of the rear bracket has a rear bracket connector, and the upper part of the front bracket has a front bracket connector; the rear bracket is rotatably connected to the push rod connector via the rear bracket connector to achieve a rotatable connection with the push rod assembly; the connector is fixed inside the push rod connector; the lower end of the connector is sleeved to the upper end of the front bracket connector via a sleeve to achieve a rotatable connection between the push rod assembly and the front bracket.

7. A foldable stroller frame according to claim 1, characterized in that: The upper part of the push rod assembly has a push handle assembly that can extend, retract, or rotate relative to it.

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