Child seat with adjustable backrest length
By leveraging the synergistic effect of the connecting strap and the reset component, the length of the child seat backrest is automatically adjusted, solving the problem of insufficient comfort caused by the fixed backrest length in existing technologies and improving ease of use and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-03
AI Technical Summary
Existing child car seat backrests have a fixed length and cannot be automatically adjusted, resulting in insufficient comfort. Some adjustable backrests require manual operation, which is inconvenient to use.
Through the synergistic effect of the connecting belt and the reset component, the backrest extension component automatically adjusts the effective length of the backrest as the backrest rotates. Combined with the slide groove or guide rail structure, smooth sliding is ensured. Mechanical adaptive adjustment replaces the traditional manual or electric structure.
Automatic backrest length adjustment enhances comfort and convenience, reduces costs, and improves reliability and safety, meeting the needs of the child car seat market.
Smart Images
Figure CN224070092U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of child car seat technology, specifically a child car seat with a backrest length that can be automatically adjusted according to the backrest angle. Background Technology
[0002] Existing child car seat backrests are typically of fixed length and cannot automatically adjust to a child's sitting or reclining posture, resulting in insufficient comfort. Some adjustable backrest seats require manual operation, which is inconvenient. Therefore, there is an urgent need for a length adjustment mechanism that can automatically adapt to changes in the backrest angle. Summary of the Invention
[0003] The purpose of this application is to provide a child seat with an adjustable backrest length, which, through the synergistic action of the connecting strap and the reset component, enables the backrest extension component to automatically adjust the effective length of the backrest as the backrest rotates, thereby improving comfort and convenience.
[0004] The technical solution of this application is: an adjustable backrest length child seat, including a seat assembly and a backrest component, wherein the backrest component can rotate relative to the seat assembly to adjust the backrest tilt angle; and further comprising:
[0005] A backrest telescopic component, which is slidably mounted on the backrest component, is used to adjust the effective length of the backrest;
[0006] A connecting strap, one end of which is connected to the backrest telescopic member, and the other end of which is connected to the seat assembly;
[0007] The reset component has one end connected to the backrest extension component and the other end connected to the backrest component or seat assembly.
[0008] The connection point between the connecting strap and the seat assembly is different from the rotation point between the backrest and the seat assembly. When the backrest rotates, the backrest extension member slides relative to the backrest through the cooperation of the connecting strap and the reset member, thereby automatically adjusting the effective length of the backrest.
[0009] As a preferred technical solution, the reset member and the connecting strap are located on the front and rear sides or the rear and front sides of the backrest member, respectively, and the backrest member has an opening for the connecting strap to pass through; the position of the opening is higher than the position of the connection point between the connecting strap and the backrest extension member and the position of the connection point between the connecting strap and the seat assembly.
[0010] One further technical solution: the connection point between the connecting strap and the seat assembly is located behind the rotation point of the backrest and the seat assembly; when the backrest tilts backward from a sitting position to a reclining position, the backrest telescopic member slides downward relative to the backrest, and the effective length of the backrest is reduced to its shortest.
[0011] A further technical solution: The connection point between the connecting strap and the seat assembly is located in front of the rotation point of the backrest and the seat assembly; when the backrest tilts backward from a sitting position to a reclining position, the backrest extension member slides upward relative to the backrest, and the effective length of the backrest extends to its maximum.
[0012] As a preferred technical solution, the seat assembly includes a seat member rotatably connected to the backrest member and a seat frame fixed below the seat member.
[0013] As a preferred technical solution, the reset component is an elastic band or tension spring, etc., used to provide a stable elastic reset force.
[0014] As a preferred technical solution, the backrest telescopic component is slidably connected to the backrest component through a sliding groove or guide rail structure to ensure smooth and stable sliding.
[0015] As a preferred technical solution, the connecting strip is a nylon webbing or a high-strength fiber strip, etc., to improve durability and tensile strength.
[0016] As a preferred technical solution, both the reset component and the connecting strip are arranged symmetrically on the left and right.
[0017] Compared with the prior art, this application has the following advantages:
[0018] 1. Through the synergistic effect of the connecting belt and the reset component, the backrest extension component can automatically slide with the rotation of the backrest component, automatically adjusting the effective length of the backrest and improving comfort and convenience.
[0019] 2. This application replaces the traditional manual or electric structure with mechanical adaptive adjustment, which has significant advantages in terms of cost, reliability and safety, and is especially suitable for the core needs of the child car seat market for safety, comfort and durability. Attached Figure Description
[0020] 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.
[0021] 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.
[0022] Figure 1 This is a three-dimensional structural diagram of the application from the front view when it is in a seated position;
[0023] Figure 2 This is a three-dimensional structural diagram of the present application from a rear view when it is in a seated position;
[0024] Figure 3 for Figure 1 A schematic diagram of the assembly structure;
[0025] Figure 4 This is a side sectional view of the structure of the present application when it is in a seated position.
[0026] Figure 5 This is a side sectional view of the structure of this application when it is in a lying position.
[0027] The components include: 1. Seat assembly; 101. Seat piece; 102. Seat frame; 2. Backrest piece; 201. Through-hole; 3. Backrest telescopic piece; 4. Connecting strap; 5. Reset piece. Detailed Implementation
[0028] 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.
[0029] 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.
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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.
[0034] Example 1: As Figures 1 to 5 As shown, a child seat with an adjustable backrest length includes:
[0035] Seating component 1;
[0036] Backrest component 2, which can rotate relative to the seat assembly 1 to adjust the backrest tilt angle;
[0037] Backrest extension member 3, which is slidably mounted on the backrest member 2, is used to adjust the effective length of the backrest;
[0038] The connecting strap 4 has one end connected to the backrest telescopic member 3 and the other end connected to the seat assembly 1;
[0039] The reset component 5 has one end connected to the backrest extension component 3 and the other end connected to the backrest component 2 or the seat assembly 1.
[0040] The connection point between the connecting strap 4 and the seat assembly 1 is different from the rotation point between the backrest 2 and the seat assembly 1. When the backrest 2 rotates, the backrest extension member 3 will slide relative to the backrest 2 through the cooperation of the connecting strap 4 and the reset member 5, thereby automatically adjusting the effective length of the backrest.
[0041] In this embodiment, the reset member 5 and the connecting strap 4 are located on the front and rear sides of the backrest member 2, respectively, and the backrest member 2 has a through-hole 201 for the connecting strap 4 to pass through. The position of the through-hole 201 is higher than the position of the connection point between the connecting strap 4 and the backrest telescopic member 3 and the position of the connecting strap 4 and the seat assembly 1. The connecting strap 4 passes through the through-hole 201 of the backrest member 2, and the position of the through-hole 201 is higher than the two connection points. This design facilitates the formation of a lever effect.
[0042] In this embodiment, the connection point between the connecting strap 4 and the seat assembly 1 is located on the rear side of the rotation point between the backrest 2 and the seat assembly 1.
[0043] Its motion principle is as follows:
[0044] When the backrest 2 rotates around the point of rotation between itself and the seat assembly 1, since the two ends of the connecting strap 4 are fixed to the backrest extension member 3 and the seat assembly 1 respectively, and the fixing point and the rotation point do not coincide, when the backrest 2 tilts backward from the sitting position to the reclining position, the length of the connecting strap on the rear side (near the seat assembly 1) of the backrest 2 shortens; the length of the connecting strap on the front side (near the backrest extension member 3) of the backrest 2 is extended by the same amount (because the total length of the connecting strap 4 remains unchanged); therefore, the backrest extension member 3 will slide downward relative to the backrest 2, and the effective length of the backrest is reduced to the shortest (the backrest extension member 3 is in a retracted state).
[0045] In this embodiment, the seat assembly 1 preferably includes a seat member 101 rotatably connected to the backrest member 2 and a seat frame 102 fixed below the seat member 101. The seat frame 102 extends rearward from the seat member 101, and the rear of the seat frame 102 has a crossbar fixedly wrapped around the end of the connecting strap 4. This design facilitates the installation between the connecting strap 4 and the seat assembly 1. Of course, the figure only illustrates one specific embodiment and does not impose any specific limitations.
[0046] Example 2: The difference between Example 1 and Example 2 is that the connection point between the connecting strap 4 and the seat assembly 1 is located in front of the rotation point of the backrest 2 and the seat assembly 1.
[0047] Its motion principle is as follows:
[0048] When the backrest 2 rotates around the point of rotation between it and the seat assembly 1, since the two ends of the connecting strap 4 are fixed to the backrest extension member 3 and the seat assembly 1 respectively, and the fixing point does not coincide with the rotation point, when the backrest 2 tilts backward from the sitting position to the reclining position, the length of the connecting strap on the rear side (near the seat assembly 1) of the backrest 2 is extended; the length of the connecting strap on the front side (near the backrest extension member 3) is shortened by the same amount (because the total length of the connecting strap remains unchanged); therefore, the backrest extension member 3 will slide upward relative to the backrest 2, and the effective length of the backrest is extended to its maximum (the backrest extension member 3 is in the extended state).
[0049] In the two embodiments described above, the reset element 5 is an elastic band or tension spring, etc., used to provide a stable elastic reset force.
[0050] In the two embodiments described above, the backrest extension member 3 is slidably connected to the backrest member 2 via a sliding groove or guide rail structure to ensure smooth and stable sliding.
[0051] In the two embodiments described above, the connecting strip 4 is preferably a nylon webbing or a high-strength fiber strip, etc., to improve durability and tensile strength.
[0052] In both embodiments described above, the reset member 5 and the connecting strap 4 are preferably two symmetrically arranged, with one set on each side. This symmetrical design, through mechanical optimization, significantly improves the reliability, durability, and user experience of the automatic backrest adjustment mechanism, making it particularly suitable for child car seats with stringent safety and stability requirements.
[0053] This application utilizes the synergistic effect of the connecting strap 4 and the reset component 5 to allow the backrest extension component 3 to automatically slide as the backrest component 2 rotates, automatically adjusting the effective length of the backrest and improving comfort and convenience. Furthermore, this application replaces traditional manual or electric structures with mechanical adaptive adjustment, offering significant advantages in cost, reliability, and safety, making it particularly suitable for the core needs of the child car seat market for safety, comfort, and durability.
[0054] 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.
[0055] 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 child seat with adjustable backrest length, comprising a seat assembly and a backrest piece, the backrest piece being rotatable relative to the seat assembly to adjust the backrest inclination angle; characterized in that, Also included are: a backrest telescopic part slidably mounted on the backrest part for adjusting the effective length of the backrest; a connecting band having one end connected to the backrest telescopic part and the other end connected to the seat assembly; a reset part having one end connected to the backrest telescopic part and the other end connected to the backrest part or the seat assembly; wherein the connecting point of the connecting band and the seat assembly is different from the rotating point of the backrest part and the seat assembly; when the backrest part rotates, the backrest telescopic part will slide relative to the backrest part and automatically adjust the effective length of the backrest through the cooperation of the connecting band and the reset part.
2. The child seat of claim 1, wherein: The reset part and the connecting band are respectively located on the front side and the rear side or the rear side and the front side of the backrest part, and the backrest part has a through hole for the connecting band to pass through; the position of the through hole is higher than the positions of the connecting point of the connecting band and the backrest telescopic part and the connecting point of the connecting band and the seat assembly.
3. A child seat with an adjustable backrest length according to claim 2, characterized in that: The connecting point of the connecting band and the seat assembly is located on the rear side of the rotating point of the backrest part and the seat assembly; when the backrest part is inclined backward from the sitting position to the lying position, the backrest telescopic part slides downward relative to the backrest part, and the effective length of the backrest is shortened to the shortest.
4. The child seat of claim 2, wherein: The connecting point of the connecting band and the seat assembly is located on the front side of the rotating point of the backrest part and the seat assembly; when the backrest part is inclined backward from the sitting position to the lying position, the backrest telescopic part slides upward relative to the backrest part, and the effective length of the backrest is extended to the longest.
5. The child seat of claim 1, wherein: The seat assembly includes a seat part rotatably connected to the backrest part and a seat frame fixedly arranged below the seat part.