Seat backrest based on ecological fibers

Abstract

The ecological fiber-based seat backrest comprises a backrest main body structure, a left side wing is obliquely arranged on the left side of the backrest main body structure, a right side wing is obliquely arranged on the right side of the backrest main body structure, and a headrest part is obliquely arranged at the top end of the backrest main body structure; a first ecological fiber layer is transversely arranged on the backrest main body structure, a second ecological fiber layer is longitudinally arranged on the backrest main body structure, the first ecological fiber layer is not in contact with the second ecological fiber layer, a third ecological fiber layer is arranged close to the surface of the left side wing, and a fourth ecological fiber layer is arranged close to the surface of the right side wing; the ecological fibers are mixed according to the function requirements of different areas, and the requirements for comfort and safety are met; the composition of the ecological fibers and polyurethane enhances the safety of drivers and conductors; the forming period is shortened, production efficiency is improved, and production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology, and specifically relates to a seat back based on ecological fiber. Background Technology

[0002] Seats are essential automotive interior components, not only fulfilling the needs of passengers for comfort and aesthetics, but also significantly impacting their safety. On one hand, car seats provide comfortable seating conditions, minimizing fatigue during long journeys and maximizing comfort. On the other hand, car seats are also crucial passive safety components, restraining occupants in the event of an accident and working with seat belts and airbags to minimize injuries.

[0003] To meet the diverse needs of different customers, seat comfort is increasingly becoming one of the important factors for car owners to choose (and can even be customized). The requirements for seat comfort differ between long-distance and short-distance driving, as well as between mountain roads and asphalt roads. The requirements for safety performance also need to be increased accordingly. Regardless of the structure or configuration, comfort, safety, and room for movement are all required.

[0004] The raw materials and processes used in foaming directly affect the comfort, safety, and mobility of a seat. Traditional foaming materials are made by mixing isocyanate esters with polyols, foaming agents, catalysts, and other auxiliary materials under low or high pressure. Such products are either too hard or too soft and cannot simultaneously meet the requirements of comfort, safety, and mobility, thus requiring further improvement. Utility Model Content

[0005] This utility model provides a seat backrest based on ecological fiber, which can solve the problems existing in the prior art: 1. The hardness of traditional seat side wings polyurethane is insufficient, and the seat cannot provide sufficient lateral support when the vehicle turns; 2. Traditional seat side wings are also not strong enough. The design is strengthened by increasing the thickness of polyurethane, but this design occupies the space for airbag wiring, resulting in insufficient space for airbag wiring layout and posing a safety risk to passengers; 3. The polyurethane filling of traditional seat headrests has general whiplash performance, which provides limited protection for passenger safety; 4. The polyurethane structure of traditional seats is prone to fatigue, thus losing its original support function, and the breathability also decreases significantly, resulting in a decline in passenger experience and safety performance.

[0006] To solve the above problems, the technical solution provided by this utility model is as follows:

[0007] This utility model embodiment provides a seat back based on ecological fiber, including a main backrest structure (1), a left wing (2) inclined on the left side of the main backrest structure (1), a right wing (3) inclined on the right side of the main backrest structure (1), and a headrest portion (4) inclined at the top of the main backrest structure (1); a first ecological fiber layer (5) is arranged in the horizontal direction of the main backrest structure (1), a second ecological fiber layer (6) is arranged in the vertical direction of the main backrest structure (1), the first ecological fiber layer (5) and the second ecological fiber layer (6) are not in contact, a third ecological fiber layer (7) is arranged near the surface of the left wing (2), and a fourth ecological fiber layer (8) is arranged near the surface of the right wing (3).

[0008] In a preferred embodiment of this utility model, the first ecological fiber layer (5) is arc-shaped and has a non-straight structure. The third ecological fiber layer (7) and the fourth ecological fiber layer (8) are both combinations of vertical and arc-shaped structures.

[0009] In a preferred embodiment of the present invention, a first groove (1-2) is provided at the boundary between the backrest main structure (1) and the left wing (2), a second groove (1-3) is provided at the boundary between the backrest main structure (1) and the right wing (3), and a third groove (1-4) is provided at the boundary between the backrest main structure (1) and the headrest (4).

[0010] Compared with the prior art, the present invention provides a seat back based on ecological fiber, which has the following beneficial effects: (1) Ecological fiber is mixed in according to the functional requirements of different areas to meet the requirements of comfort and safety; (2) The composition of ecological fiber and polyurethane enhances the safety of drivers and passengers; (3) The molding cycle is shortened, production efficiency is improved, and production costs are reduced. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a seat backrest based on eco-fiber, provided as an embodiment of this application.

[0013] Figure 2 for Figure 1 Schematic diagram of section AA.

[0014] Figure 3 for Figure 1 Schematic diagram of the BB section. Detailed Implementation

[0015] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The terms "upper," "lower," "front," "rear," "left," and "right," etc., used when describing the installation position or direction of the structure or components in this embodiment are based on the orientation shown in the accompanying drawings. They are merely for convenience of description, used to distinguish the relative positions of various components or directions, and do not represent the orientation of the device or component in this embodiment during use.

[0016] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of the utility model provides a seat back based on ecological fiber, including a main backrest structure 1. A left wing 2 is inclinedly arranged on the left side of the main backrest structure 1, a right wing 3 is inclinedly arranged on the right side of the main backrest structure 1, and a headrest portion 4 is inclinedly arranged at the top of the main backrest structure 1. A first ecological fiber layer 5 is arranged horizontally on the main backrest structure 1, and a second ecological fiber layer 6 is arranged vertically on the main backrest structure 1. The first ecological fiber layer 5 and the second ecological fiber layer 6 are not in contact. A third ecological fiber layer 7 is arranged near the surface of the left wing 2, and a fourth ecological fiber layer 8 is arranged near the surface of the right wing 3.

[0017] The first ecological fiber layer 5 is arc-shaped and has a non-straight structure. The third ecological fiber layer 7 and the fourth ecological fiber layer 8 are both combinations of vertical and arc-shaped structures. A first groove 1-2 is provided at the boundary between the main backrest structure 1 and the left wing 2, a second groove 1-3 is provided at the boundary between the main backrest structure 1 and the right wing 3, and a third groove 1-4 is provided at the boundary between the main backrest structure 1 and the headrest 4.

[0018] The main backrest structure 1, left wing 2, right wing 3, and headrest 4 of an eco-fiber-based seat back are all made of polyurethane and bamboo fiber. The polyurethane and bamboo fiber are mixed and foamed to form the seat back. The backrest of this utility model aims to utilize the excellent flexibility and durability of the eco-fiber layer to fill and form a backrest material with good elasticity and support performance. This material has good cushioning performance when in use and can effectively reduce the vibration and impact experienced by drivers and passengers during driving.

[0019] Based on different seat back structures and requirements for comfort and safety, different mixing ratios are constructed, and the density, hardness, and resilience of the filling materials are measured to ensure that they provide comfortable support for drivers and passengers, meet performance requirements, and comply with automotive industry safety standards.

[0020] The main structure of the seat backrest, which is in constant contact with drivers and passengers, provides long-term support. Traditional polyurethane seats are either too firm for practicality in low-end models or too soft for comfort in high-end models, neither of which is very ergonomic. A firmer seat results in poor comfort, while a softer seat leads to insufficient support, causing the back to sink in and the body to come into contact with the hard points of the seat frame, resulting in poor comfort, especially on long journeys or for those who drive for extended periods. A seat backrest structure with a specific ratio of blended eco-friendly fiber layers increases the firmness of the backrest, such as to 110±10N, to support the weight of the drivers and passengers without sacrificing comfort.

[0021] The left and right side wings 2 and 3 of the seat provide a strong sense of enclosure for the driver and passengers. However, when the vehicle is turning, the relatively stiff side wings support the sides of the occupants, reducing comfort. Conversely, the relatively soft side wings fail to provide sufficient support, resulting in a poor experience and potentially causing loss of vehicle control and accidents. Seat side wings with a specific ratio of eco-friendly fiber layers, whose fibers have high tensile strength and modulus, are added to the thermomolded soft foam. This allows them to withstand some external forces, increasing the overall strength and rigidity of the soft foam to provide sufficient support. For example, a rigidity of 25±5N helps resist the centrifugal force generated by the vehicle during cornering, maintaining position and ensuring the safety of the driver and passengers.

[0022] The hybrid eco-fiber layer combined with polyurethane increases strength and rigidity, allowing for seat backs and side bolsters that don't require the thickness of traditional polyurethane. This increases the space available for installing and using safety devices such as airbags, ensuring passenger safety. The eco-fiber layer also prevents the propagation of internal cracks in the soft foam, increasing its flexibility and enabling it to better absorb and disperse energy upon impact, reducing the risk of rupture. For example, adding fibers to the soft foam padding of some sports equipment can improve its impact resistance.

[0023] During the foaming and cooling process, the eco-fiber layer material can limit the shrinkage of the matrix material, making the product dimension more stable and reducing problems such as deformation and warping caused by shrinkage, which is especially beneficial for thermomolded flexible foam products with high dimensional accuracy requirements. The eco-fiber layer can improve the thermal stability of flexible foam, making it less prone to deformation in high-temperature environments. In some flexible foam components used in high-temperature environments, adding fibers can ensure the stability of its shape and performance at operating temperatures. Eco-fibers can accelerate the curing speed of flexible foam, thereby shortening the molding cycle, improving production efficiency, and reducing production costs. As a partial polyurethane filler, the eco-fiber layer reduces the use of PU material, which is beneficial for chemical use, reduces environmental pressure (PU material is non-degradable), and lowers costs. Eco-fibers can be used as filler in the headrest area, increasing headrest comfort and improving whiplash performance / fraction, thus better protecting passengers.

[0024] This invention adds an eco-fiber layer to the polyurethane used in manufacturing car seats to enhance the strength and rigidity of the polyurethane. Based on ergonomic requirements, the eco-fiber layer is added to the main backrest structure and side wing areas of the polyurethane seat. The ratio of the eco-fiber layer to the polyurethane varies depending on the structural state of the seat product; for example, the rigidity of the main backrest structure is 110±10N, while the rigidity of the two side wings is 25±5N, meeting the rigidity requirements of different areas. The combination of the eco-fiber layer and polyurethane allows the seat backrest to maintain comfort while increasing the space for airbag installation and use, thus enhancing the safety of drivers and passengers. The addition of eco-fiber is also more environmentally friendly and beneficial to the physical and mental health of drivers and passengers.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ecological fiber-based seat back, characterized by, The application relates to a backrest body structure (1) which is provided with a left wing (2) on the left side, a right wing (3) on the right side and a headrest part (4) on the top end; the backrest body structure (1) is provided with a first ecological fiber layer (5) in the transverse direction, and is provided with a second ecological fiber layer (6) in the longitudinal direction; the first ecological fiber layer (5) and the second ecological fiber layer (6) are not in contact; the left wing (2) is provided with a third ecological fiber layer (7) close to the surface; and the right wing (3) is provided with a fourth ecological fiber layer (8) close to the surface.

2. An ecological fiber-based seat backrest according to claim 1, characterized in that, The first ecological fiber layer (5) is in the shape of a circular arc, is a non-flat structure, and the third ecological fiber layer (7) and the fourth ecological fiber layer (8) are both combined structures of vertical combination and arc structure.

3. An ecological fiber-based seat backrest according to claim 1, characterized in that, The boundary between the backrest body structure (1) and the left wing (2) is provided with a first groove (1-2), the boundary between the backrest body structure (1) and the right wing (3) is provided with a second groove (1-3), and the boundary between the backrest body structure (1) and the headrest part (4) is provided with a third groove (1-4).

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