A seat angle adjustment limiting mechanism to prevent the stroller from tipping over

Abstract

This application discloses a seat angle adjustment limiting mechanism to prevent a stroller from tipping over, including a seat and a stroller bracket. The seat includes a backrest, a seat frame, and a connecting seat that plugs into the stroller bracket. The backrest is rotatably connected to the connecting seat, and an angle adjustment mechanism is provided between them. The angle adjustment mechanism allows the backrest to have at least one sitting position and one reclining position. A limiting block is provided below the rotatable connection of the backrest. The stroller bracket is provided with a stop block that cooperates with the limiting block. When the stroller is installed facing forward, the movement path of the limiting block completely avoids the stop block, and the backrest can be freely adjusted. When installed facing backward, the movement path of the limiting block is blocked by the stop block, and the backrest can only be kept in the sitting position and cannot be adjusted to the reclining position, thereby significantly reducing the risk of tipping over caused by the stroller's center of gravity shifting forward.

Description

Technical Field

[0001] This application relates to the field of children's products technology, and in particular to a seat angle adjustment limiting mechanism that can prevent strollers from tipping over. Background Technology

[0002] Currently, most strollers on the market are equipped with detachable forward-facing and rear-facing seats (or "seats") to meet the needs of infants at different stages of development. When forward-facing, the infant can see the scenery ahead; when rear-facing, it is convenient for parents to observe and care for the infant at any time.

[0003] To ensure infant comfort, car seat backs are typically designed to be angle-adjustable, allowing switching between sitting and reclining positions. In existing technology, when the car seat is installed rear-facing with the backrest in a reclining position, the infant's weight and the car seat's center of gravity shift significantly forward (the seat center is shifted forward). If a parent removes the child from the seat at this time, causing a sudden reduction in the stroller's load, and if the stroller happens to be on a slope, the stroller is likely to tip forward due to the forward shift in the center of gravity, posing a significant safety hazard.

[0004] Therefore, there is an urgent need for a solution that can automatically limit the backrest from lying flat when the seat is installed in the reverse direction, forcing it to remain in a sitting position, thereby avoiding the risk of tipping over due to excessive forward shift of the center of gravity. Summary of the Invention

[0005] The purpose of this application is to provide a seat angle adjustment limiting mechanism that can prevent the stroller from tipping over. When the seat is installed in the reverse direction, the backrest angle adjustment function is automatically limited to prevent the backrest from tilting forward into a reclining position.

[0006] The technical solution of this application is: a seat angle adjustment limiting mechanism to prevent a trolley from tipping over, comprising a seat and a trolley bracket, wherein the seat includes a backrest, a seat frame, and a connecting seat that is inserted into and cooperates with the trolley bracket; the backrest is rotatably connected to the connecting seat and an angle adjustment mechanism is provided between the two, the angle adjustment mechanism enabling the backrest to have at least one sitting position and one reclining position; a limiting block is provided below the rotatable connection part of the backrest; and a stop block that cooperates with the limiting block is provided on the trolley bracket;

[0007] When the seat is initially in a sitting position and is mounted face-up on the trolley bracket, the stop block is positioned behind the limiting block, and the backrest can be rotated backward to adjust from a sitting to a reclining position.

[0008] When the seat is initially in a sitting position and is mounted backward on the trolley bracket, the stop block abuts against the rear of the limiting block and prevents the limiting block from moving backward, so that the backrest cannot rotate forward relative to the trolley, thereby preventing the backrest from adjusting from a sitting position to a reclining position and keeping the backrest in a sitting position.

[0009] As a preferred technical solution, the limiting block is located below the backrest pivot.

[0010] As a preferred technical solution, the trolley bracket is fixed to the trolley frame, and the trolley is a single-person trolley or a double-person trolley. When it is a double-person trolley, there are two trolley brackets, which are arranged vertically or horizontally. At least one of the trolley brackets is equipped with the stop block.

[0011] As a preferred technical solution, the limiting block is a protrusion, pin, or lug fixed to the backrest.

[0012] As a preferred technical solution, the stop block is a columnar, block-shaped, or plate-shaped structure fixed on the trolley bracket.

[0013] Compared with the prior art, this application has the following advantages:

[0014] 1. This application, through differentiated restrictions on backrest angle adjustment during forward / reverse installation, ensures that the backrest can only remain in a sitting position and cannot be adjusted to a reclining position during reverse installation, thereby significantly reducing the risk of tipping over caused by the forward shift of the stroller's center of gravity.

[0015] 2. This application utilizes the existing seat plug-in structure and backrest rotation characteristics, and achieves complex safety functions by simply adding a simple limit block and stop block structure. The structure is ingenious and the cost is low.

[0016] 3. This application's functionality remains unaffected during forward installation, and the backrest is freely adjustable to suit various usage scenarios. When installed in reverse, the safety lock automatically engages, requiring no parental memory or manual settings, ensuring reliability and convenience. Attached Figure Description

[0017] 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.

[0018] 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.

[0019] Figure 1 This is a three-dimensional structural diagram of the seat in this application when it is in a forward sitting position;

[0020] Figure 2 This is a side view of the seat in the present application when it is in a forward sitting position.

[0021] Figure 3 This is a side view of the seat in the present application when it is in a reclining position.

[0022] Figure 4 This is a three-dimensional structural diagram of the seat in this application when it is in a reverse sitting position.

[0023] Figure 5 This is a side view of the seat in the present application when it is in a rear-facing sitting position.

[0024] Figure 6 A schematic diagram of the structure of a two-person trolley frame to which this application applies (the upper trolley bracket is not shown);

[0025] Figure 7 for Figure 6 A schematic diagram of the structure of a double stroller frame with a single seat installed facing forward (the upper stroller bracket is not shown);

[0026] Figure 8 for Figure 6 A schematic diagram of the structure of a double stroller frame with a single seat installed in reverse (the upper stroller bracket is not shown);

[0027] Figure 9 for Figure 6 A schematic diagram of the structure of a double stroller frame with two seats installed facing forward.

[0028] The components include: 1. Seat; 101. Backrest; 1011. Limiting block; 102. Seat frame; 103. Connecting seat;

[0029] 2. Trolley bracket; 201. Stop block. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] like Figures 1 to 9As shown, a seat angle adjustment limiting mechanism to prevent a stroller from tipping over includes a seat 1 and a stroller bracket 2. The seat 1 includes a backrest 101, a seat frame 102, and a connecting seat 103 that is inserted into and cooperates with the stroller bracket 2. The backrest 101 is rotatably connected to the connecting seat 103, and an angle adjustment mechanism is provided between the two. The angle adjustment mechanism enables the backrest 101 to have at least one sitting position and one reclining position. A limiting block 1011 is provided below the rotatable connection part of the backrest 101. The stroller bracket 2 is provided with a stop block 201 that cooperates with the limiting block 1011.

[0037] In this embodiment, the limiting block 1011 is located below the backrest pivot.

[0038] In this embodiment, the limiting block 1011 can be a protrusion, pin, or lug fixed on the backrest 101.

[0039] In this embodiment, the stop block 201 can be a columnar, block-shaped, or plate-shaped structure fixed on the trolley bracket 2.

[0040] In this embodiment, the angle adjustment mechanism can be a multi-position angle adjustment mechanism, that is, in addition to a sitting position and a reclining position, the backrest can also have more than one semi-reclining position. Since the angle adjustment mechanism is a common and diverse mechanism in this technical field, it will not be described in detail or limited here.

[0041] The working principle of this application is as follows:

[0042] Forward installation (see) Figures 1 to 3 Insert the seat 1 (initially in a seated position) into the stroller bracket 2 with the backrest facing forward (i.e., the backrest facing the rear of the stroller). At this time, the stop 201 on the stroller bracket 2 is exactly behind the upper limit block 1011 of the seat 1. When the angle adjustment mechanism is operated, the backrest 101 is moved from the seated position (see...) Figure 2 ) to lying position (see Figure 3 During adjustment, the backrest 101 rotates backward and downward around the backrest pivot axis, and the movement trajectory (arc) of the limit block 1011 moves forward and downward. This movement path completely avoids the rear stop 201, so the backrest 101 can be adjusted to a reclining position without obstruction.

[0043] Reverse installation (see) Figures 4 to 5Insert the seat 1 (initially in a sitting position) into the stroller bracket 2 with the backrest facing forward (i.e., the backrest facing the front of the stroller). At this time, the stop block 201 on the stroller bracket 2 is still behind the seat upper limit block. When the user attempts to operate the angle adjustment mechanism to flatten the backrest 101, the backrest 101 needs to rotate forward and downward around the backrest axis, while the movement trajectory of the limit block 101 is backward and downward. Its movement path is blocked by the rear stop block 201, preventing the backrest 101 from continuing to rotate forward, thus keeping it in a sitting position and preventing it from reclining.

[0044] This invention can be widely applied to various strollers, including single-person strollers and double-person strollers. For example... Figures 6 to 9 As shown, an embodiment of a double-seat stroller is illustrated, with two stroller brackets arranged vertically on the stroller frame. The stop block can be provided only for the lower bracket, or both the upper and lower brackets can be equipped with stop blocks 21 to provide safety protection for both seats simultaneously.

[0045] This application significantly reduces the risk of tipping over due to the forward shift of the stroller's center of gravity by differentiating the backrest angle adjustment when the stroller is installed in a forward or rearward orientation.

[0046] This application utilizes the existing seat plug-in structure and backrest rotation characteristics to achieve complex safety functions by simply adding a simple limit block and stop block structure. The structure is ingenious and the cost is low.

[0047] This product remains fully functional when installed facing forward, and the backrest is freely adjustable to suit various usage scenarios. When installed rear-facing, the safety lock automatically engages, requiring no parental memory or manual settings, ensuring reliability and convenience.

[0048] 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.

[0049] 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 seat angle adjustment limiting mechanism to prevent a stroller from tipping over, comprising a seat and a stroller bracket, the seat comprising a backrest, a seat frame, and a connecting seat that interlocks with the stroller bracket; the backrest is rotatably connected to the connecting seat and an angle adjustment mechanism is provided between them, the angle adjustment mechanism enabling the backrest to have at least one sitting position and one reclining position; characterized in that: A limiting block is provided below the rotating connection part of the backrest; a stop block that cooperates with the limiting block is provided on the trolley bracket; When the seat is initially in a sitting position and is mounted face-up on the trolley bracket, the stop block is positioned behind the limiting block, and the backrest can be rotated backward to adjust from a sitting to a reclining position. When the seat is initially in a sitting position and is mounted backward on the trolley bracket, the stop block abuts against the rear of the limiting block and prevents the limiting block from moving backward, so that the backrest cannot rotate forward relative to the trolley, thereby preventing the backrest from adjusting from a sitting position to a reclining position and keeping the backrest in a sitting position.

2. The seat angle adjustment and limiting mechanism for preventing a stroller from tipping over according to claim 1, characterized in that: The limiting block is located below the backrest pivot.

3. The seat angle adjustment and limiting mechanism for preventing the trolley from tipping over according to claim 1, characterized in that: The trolley bracket is fixed to the trolley frame, and the trolley can be a single-person trolley or a double-person trolley.

4. The seat angle adjustment and limiting mechanism for preventing the trolley from tipping over according to claim 3, characterized in that: When it is a two-person stroller, there are two stroller brackets, which can be arranged vertically or horizontally.

5. The seat angle adjustment and limiting mechanism for preventing the trolley from tipping over according to claim 4, characterized in that: At least one of the trolley brackets is provided with the stop block.

6. The seat angle adjustment and limiting mechanism for preventing the trolley from tipping over according to claim 1, characterized in that: The limiting block is a protrusion, pin, or lug fixed to the backrest.

7. The seat angle adjustment and limiting mechanism for preventing a stroller from tipping over according to claim 1, characterized in that: The stop block is a columnar, block-shaped, or plate-shaped structure fixed to the trolley bracket.

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