Filling material structure, seat and vehicle
By employing a layered structure of surface soft foam, transition foam, and main body foam in vehicle seats, the problem of sudden changes in seat firmness is solved, improving ride comfort, controlling odor and VOC emissions, simplifying the process, and reducing costs.
Patent Information
- Application Number
- CN202520489571.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-19
AI Technical Summary
The existing vehicle seat filling material structure has a sudden change in softness and hardness in the vertical direction, resulting in an uncomfortable riding experience. In addition, the adhesive process is not conducive to odor and VOC control, and is costly and complex.
The structure consists of a surface soft foam layer, a transition foam layer, and a main foam layer stacked sequentially. The surface soft foam layer has a lower hardness than the main foam layer, while the transition foam layers have progressively higher hardness. The interlayer fusion is achieved through an integrated molding process, reducing the use of adhesives.
It provides a smooth transition from soft to firm, improving seat comfort, reducing odor and VOC emissions, simplifying the manufacturing process, and lowering costs.
Smart Images
Figure CN223850183U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of vehicles, in particular to a filling material structure, a seat and a vehicle. BACKGROUND
[0002] More and more people pay attention to the comfort of vehicle seats, and the filling material of the seat is an important factor affecting the comfort of the seat. A commonly used filling material structure is a hierarchical structure of "high-density sponge + slow-rebound soft foam", and another is a hierarchical structure of "high-density sponge + shock-absorbing layer + slow-rebound sponge". The two kinds of filling material structures are connected between different layers by adhesive process, which is not conducive to the control of odor and VOC, and has high cost and complex process. The filling materials of the two structures have the disadvantage of sudden change of softness in the vertical direction of the seat, causing some uncomfortable riding experience such as soft upper layer but hard deep layer support. CONTENT OF THE UTILITY MODEL
[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a filling material structure, a seat and a vehicle.
[0004] In a first aspect, the embodiments of the present application provide a filling material structure, comprising a surface soft foam layer, a transition foam layer and a body foam layer which are connected in sequence, the hardness of the surface soft foam layer is less than the hardness of the body foam layer, the hardness of the transition foam layer increases along its thickness from the surface soft foam layer to the body foam layer, and the hardness of one side of the transition foam layer connected with the surface soft foam layer is less than the hardness of the side connected with the body foam layer, and the transition foam layer is a fusion layer of the surface soft foam layer and the body foam layer.
[0005] According to the embodiments of the first aspect of the present application, the surface soft foam layer, the transition foam layer and the body foam layer are in an integrally formed structure.
[0006] According to the embodiments of the first aspect of the present application, the surface soft foam layer, the transition foam layer and the body foam layer are all polyurethane foam layers.
[0007] According to the embodiments of the first aspect of the present application, the density of the surface soft foam layer is 50kg / m 3 -55kg / m 3 .
[0008] According to the embodiments of the first aspect of the present application, the rebound rate of the surface soft foam layer is 25%-35%.
[0009] According to the embodiments of the first aspect of the present application, the density of the body foam layer is 60kg / m 3 -70kg / m 3 .
[0010] According to the embodiment of the first aspect of the present application, the rebound rate of the body foaming layer is not less than 60%.
[0011] According to the embodiment of the first aspect of the present application, the overall thickness of the surface soft foaming layer, the transition foaming layer and the body foaming layer is D, D≥60mm, the thickness of the surface soft foaming layer is D1, 20mm≤D1+D2≤40mm, and 30%≤(D1+D2) / D≤50%, the thickness of the transition foaming layer is D2, and 25%≤D2 / (D1+D2)≤40%.
[0012] In the second aspect, the embodiment of the present application provides a seat comprising the filling material structure provided by the embodiment of the first aspect of the present application.
[0013] In the third aspect, the embodiment of the present application provides a vehicle comprising the seat provided by the embodiment of the second aspect of the present application.
[0014] Compared with the prior art, the technical scheme provided by the embodiment of the present application has the following advantages:
[0015] The filling material structure, the seat and the vehicle provided by the embodiment of the present application, the filling material structure comprises a surface soft foaming layer, a transition foaming layer and a body foaming layer which are connected in sequence, the hardness of the surface soft foaming layer is less than that of the body foaming layer, the hardness of the transition foaming layer increases along the thickness thereof from the surface soft foaming layer to the body foaming layer, and the hardness of the side of the transition foaming layer connected with the surface soft foaming layer is less than that of the side connected with the body foaming layer, and the transition foaming layer is a fusion layer of the surface soft foaming layer and the body foaming layer. The surface soft foaming layer provides a soft and flexible feeling to the human body, and as the human body continuously extrudes the surface soft foaming layer, the surface soft foaming layer extrudes the transition foaming layer, the hardness of the transition foaming layer gradually increases, so that the supporting hardness felt by the human body gradually increases, until the pressure is transmitted to the body foaming layer, the hardness of the body foaming layer is higher than that of the surface soft foaming layer, and the body foaming layer provides supporting force for the surface soft foaming layer and the transition foaming layer. When the human body sits on the seat provided with the filling material structure, the human body will not feel uncomfortable due to the sudden change of hardness and the hard layer. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Figure 1 Structure diagram of the filling material structure.
[0019] 1, surface soft foam layer; 2, transition foaming layer; 3, body foaming layer. DETAILED DESCRIPTION
[0020] In order to enable persons skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the present application, the solutions of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein; obviously, the embodiments in the description are only some of the embodiments of the present application, not all the embodiments.
[0022] More and more people pay attention to the comfort of vehicle seats, and the filling material of the seat is an important factor affecting the comfort of the seat. A commonly used filling material structure is a hierarchical structure of "high-density sponge + slow-rebound soft foam", and another is a hierarchical structure of "high-density sponge + shock-absorbing layer + slow-rebound sponge". The two kinds of filling material structures are connected between different layers by adhesive process, which is not conducive to the control of odor and VOC, and has high cost and complex process. The filling materials of the two structures have the disadvantage of sudden change of softness in the vertical direction of the seat, causing some uncomfortable riding experience such as soft surface layer but hard deep layer support.
[0023] In view of this, as Figure 1 shown, the present application provides a filling material structure, which comprises a surface soft foam layer 1, a transition foaming layer 2 and a body foaming layer 3 connected in sequence, the hardness of the surface soft foam layer 1 is less than that of the body foaming layer 3, the hardness of the transition foaming layer 2 increases from the surface soft foam layer 1 to the body foaming layer 3 along its thickness, and the hardness of the side of the transition foaming layer 2 connected with the surface soft foam layer 1 is less than that of the side connected with the body foaming layer 3, and the transition foaming layer 2 is a fusion layer of the surface soft foam layer 1 and the body foaming layer 3.
[0024] The filling material structure provided by the embodiments of the present application is mainly used in a seat, for example, a seat part of the seat is provided with the filling material structure. When a human body contacts the seat, the human body first contacts the surface soft foam layer 1. The relatively soft surface soft foam layer 1 provides a soft and comfortable feeling to the human body. With the continuous extrusion of the human body on the surface soft foam layer 1, the surface soft foam layer 1 extrudes the transition foam layer 2. The hardness of the transition foam layer 2 gradually increases, so that the human body feels that the supporting hardness gradually increases, until the pressure is finally transmitted to the body foam layer 3. The hardness of the body foam layer 3 is higher than that of the surface soft foam layer 1. The body foam layer 3 provides supporting force for the surface soft foam layer 1 and the transition foam layer 2, and is also used for supporting the human body. When the human body sits on the seat provided with the filling material structure, the human body does not feel uncomfortable due to the sudden change of the hardness and the hard feeling, and the comfort is improved.
[0025] In some embodiments, the surface soft foam layer 1, the transition foam layer 2 and the body foam layer 3 are in an integrated structure. Compared with the prior art in which different layers are bonded by glue, the control of odor and VOC is facilitated. In specific implementation, the body foam is produced according to the existing foaming process in the foaming mold. The surface soft foam can be placed in the lower model cavity of the foaming mold. The surface soft foam is fixed by using five iron powder sheets and corresponding strong magnetic points on the mold. The surface soft foam layer 1 and the body foam layer 3 are integrated and matured, and are completely fused. At the same time, the hardness of the surface layer to the body layer is smoothly transitioned from soft to hard in the thickness direction. In this production process, a transition foam layer, that is, the transition foam layer 2, is naturally formed between the surface soft foam layer 1 and the body foam layer 3. The transition foam layer 2 is formed by the thickness of the surface soft foam layer 1 being occupied during the raw material rising process of the body foam layer 3.
[0026] In some embodiments, the surface soft foam layer 1, the transition foam layer 2 and the body foam layer 3 are all polyurethane foam layers. The polyurethane foam layer has good heat insulation effect, excellent waterproof performance, strong corrosion resistance and stable chemical properties.
[0027] In some embodiments, the density of the surface soft foam layer 1 made of polyurethane is 50kg / m 3 -55kg / m 3 The surface soft foam layer 1 with the density is soft and comfortable.
[0028] In some embodiments, the resilience rate of the surface soft foam layer 1 is 25%-35%. The human body experiences strong comfort after contacting the surface soft foam layer 1.
[0029] In some embodiments, the density of the body foam layer 3 made of polyurethane is 60kg / m 3 -70kg / m 3 The body foam layer 3 can provide support and will not affect the experience of the human body.
[0030] In some embodiments, the resilience of the bulk foamed layer 3 is not less than 60%, and the comfort is strong.
[0031] In some embodiments, considering the foaming forming process and cost, and the transition foamed layer 2 is formed by the raw material of the bulk foamed layer 3 invading the thickness of the surface soft foamed layer 1 during the foaming process, the thicknesses of the surface soft foamed layer 1, the transition foamed layer 2 and the bulk foamed layer 3 satisfy the following relationships: the overall thicknesses of the surface soft foamed layer 1, the transition foamed layer 2 and the bulk foamed layer 3 are D, D≥60mm; the thickness of the surface soft foamed layer 1 is D1, 20mm≤D1+D2≤40mm, for example, D1+D2 is 20mm, 25mm, 30mm, 35mm and 40mm, and 30%≤(D1+D2) / D≤50%, the surface soft foamed layer 1 cannot be too thick to cause the overall filling material structure to be too soft, and cannot be too thin to cause the comfort to decrease after the human body contacts; the thickness of the transition foamed layer is D2, and 25%≤D2 / (D1+D2)≤40%, the hardness of the transition foamed layer gradually increases from the side close to the surface soft foamed layer 1 to the side close to the bulk foamed layer 3, and the transition foamed layer has a transition effect, the transition foamed layer is too thin to have a weak transition effect, and is too thick to invade the thickness of the surface soft foamed layer 1, and then to decrease the softness of the surface of the seat.
[0032] Another embodiment of the present application provides a seat, which comprises the filling material structure described above. The backrest part or the seat part of the seat can be provided with the filling material layer described above.
[0033] Still another embodiment of the present application provides a vehicle, which comprises the seat described above.
[0034] It should be noted that, in the present text, the relationship terms such as “first” and “second” are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms “include”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement “including a…” does not exclude the presence of another identical element in the process, method, article or equipment including the element.
[0035] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.
Claims
1. A filler material structure, characterized by, The seat cushion comprises a sequentially stacked connection of a surface soft foam layer (1), a transition foam layer (2) and a body foam layer (3), the hardness of the surface soft foam layer (1) is less than the hardness of the body foam layer (3), the hardness of the transition foam layer (2) increases along its thickness from the surface soft foam layer (1) to the body foam layer (3), and the hardness of the side of the transition foam layer (2) connected with the surface soft foam layer (1) is less than the hardness of the side of the transition foam layer (2) connected with the body foam layer (3), the transition foam layer (2) is a fusion layer of the surface soft foam layer (1) and the body foam layer (3).
2. The filler material structure of claim 1, wherein, The surface soft foam layer (1), the transition foam layer (2) and the body foam layer (3) are integrally formed.
3. The filler material structure of claim 1, wherein, The surface soft foam layer (1), the transition foam layer (2) and the body foam layer (3) are all polyurethane foam layers.
4. The filler material structure of claim 3, wherein, The density of the surface soft foam layer (1) is 50 kg / m 3 - 55 kg / m 3 .
5. The filler material structure of claim 3, wherein, The resilience of the surface soft foam layer (1) is 25%-35%.
6. The filler material structure of claim 3, wherein, The density of the bulk foamed layer (3) is 60 kg / m 3 - 70 kg / m 3 .
7. The filler material structure of claim 3, wherein, The resilience of the body foam layer (3) is not less than 60%.
8. The filler material structure of claim 1, wherein, The overall thickness of the surface soft foam layer (1), the transition foam layer (2) and the body foam layer (3) is D, D≥60mm, the thickness of the surface soft foam layer (1) is D1, 20mm≤D1+D2≤40mm, and 30%≤(D1+D2) / D≤50%, the thickness of the transition foam layer is D2, and 25%≤D2 / (D1+D2)≤40%.
9. A seat, characterized by The seat comprises the filling material structure according to any one of claims 1-8.
10. A vehicle characterized by comprising: The seat comprises the filling material structure according to claim 9.