A type of seat foam and seat

Abstract

This application provides a seat foam and a seat. The seat foam includes a foam A-side, which is the side of the foam closest to the occupant. A functional area is disposed on the foam A-side, and the functional area has at least one transition surface, which is a small plane with an angle A greater than or equal to 90 degrees to the foam A-side. A preset area is used to configure a sheet-like occupant sensing device, and the preset area is the orthographic projection area of ​​the sheet-like occupant sensing device on the foam A-side. A stress concentration area is a stress radiation area that overlaps with the functional area and the preset area. A stress relief part is a cut located in the stress concentration area, at the junction of the foam A-side and the transition surface outside the preset area, for stress relief. This solution uses a cut to release stress in the stress concentration area, which not only ensures the flatness of the seat when sitting, but also releases stress protection elements in a timely manner, achieving the dual effect of meeting both seat design requirements and user experience requirements.

Description

Technical Field

[0001] This application relates to the field of soft seat components technology, specifically to a seat foam and a seat. Background Technology

[0002] Nowadays, people have higher and higher requirements for the softness of car seats, and the common method to increase the softness of car seats is to increase the amount of soft foam. However, with the modernization and intelligent development of the automotive industry, it has become necessary to install electronic components such as human body occupancy sensors on the side of the foam near the passenger. Since the connection between the various components in the car seat or the installation of a certain component will form a functional area, there will be a stress concentration phenomenon at the interface between the two surfaces of this functional area. Therefore, the electronic components located in the stress concentration area are very easy to be damaged. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a seat foam and a seat.

[0004] In a first aspect, this application provides a seat foam, comprising:

[0005] Foam A side, wherein foam A side is the side of the foam closest to the occupant;

[0006] A functional area is provided on the surface of the foam A. The functional area has at least one transition surface, which is a small plane with an angle greater than or equal to 90 degrees to the surface of the foam A.

[0007] A preset area is used to configure a sheet-like occupant sensing device. The preset area is the orthographic projection area of ​​the sheet-like occupant sensing device on the surface of foam A.

[0008] Stress concentration area, wherein the stress concentration area is the stress radiation area that overlaps with the functional area and the preset area;

[0009] The stress-relieving part is a cut located at the junction of the foam A surface and the transition surface outside the preset area, within the stress concentration area, and is used to relieve stress.

[0010] According to the technical solution provided in the embodiments of this application, in the stress concentration area, the stress relief part is arranged on both sides of the preset area for bidirectional stress relief, and the preset area between the stress relief parts on both sides forms a return block, which is used to return the occupant sensing device.

[0011] According to the technical solution provided in the embodiments of this application, the return block is equipped with rounded corners to enhance the smoothness of the edges.

[0012] According to the technical solution provided in the embodiments of this application, the distance between the stress-relieving part and the edge of the preset area is 0-3mm.

[0013] According to the technical solution provided in the embodiments of this application, the length of the stress-relieving part is 10-20mm along the length direction of the sheet-like occupant sensing device, and the width of the stress-relieving part is 0-3mm along the width direction of the sheet-like occupant sensing device.

[0014] According to the technical solution provided in the embodiments of this application, along the thickness direction of the seat foam, the height h1 of the stress-relieving part and the height h2 of the functional area satisfy h1=k·h2, where the value of k ranges from 0.3 to 1.

[0015] According to the technical solution provided in the embodiments of this application, the cut section of the stress-relieving part is quadrilateral or triangular.

[0016] According to the technical solution provided in the embodiments of this application, the functional area is the groove of the foam, and the stress relief part is arranged on both sides of the groove in the stress concentration area.

[0017] According to the technical solution provided in the embodiments of this application, the functional area is the boundary area between soft and hard foam or the passageway for the occupant sensing device.

[0018] Secondly, this application provides a seat, including the aforementioned seat foam and a sheet-shaped occupant sensing device, wherein the sheet-shaped occupant sensing device is disposed within the preset area.

[0019] In summary, this application proposes a seat foam and a seat. The seat foam includes a foam A-side, which is the side of the foam closest to the occupant. A functional area is disposed on the foam A-side, and the functional area has at least one transition surface, which is a small plane with an angle A greater than or equal to 90 degrees to the foam A-side. A preset area is used to configure a sheet-like occupant sensing device, and the preset area is the orthographic projection area of ​​the sheet-like occupant sensing device on the foam A-side. A stress concentration area is a stress radiation area that overlaps with the functional area and the preset area. A stress-relieving part is a cut located at the junction of the foam A-side and the transition surface outside the preset area, disposed within the stress concentration area, and used to remove stress. This solution proposes to release stress by setting a stress-relieving part, thereby reducing stress damage to the occupant sensing device. This solution uses a cut to release stress in the stress concentration area, which not only ensures the flatness of the seat when sitting, but also releases stress protection elements in a timely manner, achieving the dual effect of meeting seat design requirements and user experience requirements. Attached Figure Description

[0020] Figure 1 A schematic diagram of the pre-set area (in a straight line) and the groove (lifting groove) provided in the embodiments of this application;

[0021] Figure 2 A schematic diagram of the stress-relieving part of the occupant sensing device (in a straight line) and the groove (suspension groove) provided in the embodiments of this application;

[0022] Figure 3 A schematic diagram of the structure of the preset area (I-shaped) and the boundary area between the soft and rigid foam provided in the embodiments of this application;

[0023] Figure 4 A schematic diagram of the structure of the occupant sensing device (I-shaped) and the stress-relieving part at the interface between the rigid and flexible foam provided in the embodiments of this application;

[0024] Figure 5 A schematic diagram of the structure of the trench (longitudinal mounting groove) and the occupant sensing device passage (without occupant sensing device installed) provided in the embodiments of this application;

[0025] Figure 6 A schematic diagram of the structure of the trench (longitudinal mounting groove) and the occupant sensing device passage (for mounting the occupant sensing device) provided in the embodiments of this application;

[0026] Figure 7 A schematic diagram of the structure of the trench (suspension groove) and the occupant sensing device passage (without occupant sensing device installed) provided in the embodiments of this application;

[0027] Figure 8 A schematic diagram of the structure of the trench (suspension groove) and the occupant sensing device passage (for installing the occupant sensing device) provided in the embodiments of this application;

[0028] Figure 9 A schematic diagram of a structure provided for embodiments of this application, showing that the functional area is the boundary between soft and rigid foam and that a stress-relieving part is provided on one side;

[0029] Figure 10 The functional area provided in the embodiments of this application is the interface area between soft and rigid foam, and stress-relieving parts are provided on both sides. Figure 4 A structural diagram of region D in the middle;

[0030] Figure 11 This is a schematic diagram of a structure provided in an embodiment of the present application, showing a functional area as a groove (lifting groove) and a stress-relieving part on one side;

[0031] Figure 12 The functional area provided in the embodiments of this application is a groove (lifting groove) and stress-relieving parts are provided on both sides. Figure 2 Schematic diagram of the structure of region A in the middle;

[0032] Figure 13 This is a schematic diagram of a structure provided in an embodiment of the present application, showing that the functional area is a trench (through the trench) and a stress-relieving part is provided on one side;

[0033] Figure 14 The functional area provided in the embodiments of this application is a groove (through the groove) and stress-relieving parts are provided on both sides. Figure 6 A structural diagram of region C in the middle;

[0034] Figure 15 A schematic diagram of a structure provided for an embodiment of this application, showing that the functional area is a passageway for an occupant sensing device and that a stress-relieving part is provided on one side;

[0035] Figure 16 The functional area provided in this application embodiment is an opening for the occupant sensing device, and stress-relieving parts are provided on both sides. Figure 6 A structural diagram of region B in the middle.

[0036] The text labels in the image represent:

[0037] 1. Foam; 101. Foam A-side; 1011. Preset area; 1012. Stress concentration area; 1101. Groove; 1102. Passage through the occupant sensor; 1103. Boundary area between soft and hard foam; 12. Receiving groove; 13. Stress relief section; 14. Transition surface; 141. Angle A; 2. Occupant sensor; 21. Injection block; 15. Return block; 17. Rounded corner. Detailed Implementation

[0038] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] As mentioned in the background section, in view of the problems in the prior art, this application proposes a seat foam, comprising:

[0042] Foam A side 101, wherein foam A side 101 is the side of the foam closest to the occupant;

[0043] Functional area 11, the functional area is located on the foam A surface 101, the functional area 11 has at least one transition surface 14, the transition surface 14 is a small plane with an angle A141 greater than or equal to 90 degrees with the foam A surface 101;

[0044] The preset area 1011 is used to configure the sheet-shaped occupant sensing device 2. The preset area 1011 is the orthographic projection area of ​​the sheet-shaped occupant sensing device 2 on the foam A surface 101.

[0045] Stress concentration area 1012, wherein the stress concentration area 1012 is the stress radiation area overlapping the functional area 11 and the preset area 1011;

[0046] The stress-relieving part 13 is a cut located at the junction of the foam A surface 101 and the transition surface 14 outside the preset area 1011, within the stress concentration area 1012, and is used to relieve stress.

[0047] Specifically, the seat foam includes at least rigid foam, and soft foam may be provided near the occupant's seating side of the rigid foam as needed. The soft foam can improve the seat's softness. The rigid foam or the soft foam near the occupant's seating side constitutes the foam A-side 101. The shape of the preset area 1011 is consistent with the shape of the sheet-like occupant sensing device 2 to be installed on the foam A-side 101. Please refer to [reference needed]. Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the preset area 1011 can be in the shape of a straight line or an I-shape. It is the installation area reserved for the occupant sensing device 2 when the foam A-side 101 is sheet-like. The functional area can be as follows: Figure 3 The boundary region 1103 between the soft and hard foam shown can be as follows: Figure 5 The occupant sensing device through-port 1102 shown can also be as follows: Figure 5 The groove 1101 shown as a longitudinal mounting groove can also be as follows: Figure 1 and Figure 7 The groove 1101 shown is a suspension groove, which corresponds to the occupant sensing device 2 after it is installed on the foam A surface 101. Figure 4 , 6 As shown in Figures 1 and 8, the preset area 1011 is adapted to the shape of the occupant sensing device 2. The sheet-like occupant sensing device 2 can be a human occupancy sensor. The foam A-side 101 can be provided with a receiving groove 12 on one side of the functional area 11. The receiving groove 12 is used to receive the injection-molded block 21 of the human occupant sensor. The end of the occupant sensing device 2 away from the injection-molded block 21 is attached to the foam A-side 101 and extends naturally with the surface structure of the foam A-side 101.

[0048] Specifically, since the functional area 11 has a height difference relative to the foam A surface 101, the stress relief part 13 of the stress concentration area 1012 (the right-angle connection in the shape of a step) has three-dimensional dimensions. Its length and height can be set according to experience, seat design requirements and the required force relief. Its width should be as small as possible to avoid the human body feeling a sinking sensation when sitting, which would impair the sitting experience.

[0049] The working principle of this solution is as follows: Since the functional area is essential for the seat, the junction of the transition surface 14 and the foam A surface 101 also exists. The sheet-like occupant sensing device 2 naturally extends on the foam A surface 101. The sheet-like occupant sensing device 2 located in the stress concentration area 1012 at the junction of the two surfaces is very easy to be damaged when the occupant sits on it. When an occupant sits in a car seat, the foam A-side 101 is compressed and can undergo slight deformation. However, the foam A-side 101 itself inevitably has functional areas 11 for performing various functions. These functional areas 11 can be slots for installing certain components or holes for penetrating certain components. When these shapes are compressed, stress is concentrated at their edges, forming stress concentration areas 1012. The sheet-like occupant sensing device 2 located in the stress concentration area 1012 is easily damaged by stress, leading to component damage. This solution releases the stress in the stress concentration area 1012 by providing the stress relief part 13, thereby alleviating the stress concentration on the sheet-like occupant sensing device 2, thus preventing component damage and extending the service life of electronic components. At the same time, the stress relief part 13 has a small opening size in the direction of human seating, which also avoids the problem of a feeling of indentation when sitting, achieving the dual effect of alleviating the degree of damage to electronic components and improving the seating experience.

[0050] In a preferred embodiment, stress relief parts 13 are arranged on both outer sides of the preset area 1011 within the stress concentration area 1012 for bidirectional stress relief. A return block 15 is formed in the preset area between the stress relief parts 13 on both sides, and the return block 15 is used to return the occupant sensing device 2 to its original position.

[0051] Please refer to Figure 10 , Figure 12 , Figure 14 , Figure 16As shown, when the stress-relieving portions 13 are opened on both sides of the preset area 1011, the preset area 1011 between the two stress-relieving portions 13 is separated into a piece that can deform to different degrees from the adjacent foam 1. This piece of foam 1 forms the return block 15. Since the return block 15 is not pulled by the surrounding foam 1, the stress concentration can be reduced. At this time, since the stress from the foam 1 is reduced, the sheet-like occupant sensing device 2 attached to the surface of the return block 15 will also be less damaged. When the occupant sits in the car seat, the return block 15 absorbs the pressure and deforms. When the occupant gets up, the return block 15 releases the pressure and restores its original position, so that the sheet-like occupant sensing device 2 attached to the surface of the return block 15 returns to its original position.

[0052] In a preferred embodiment, the edge of the return block 15 is provided with a rounded corner 17 to enhance the smoothness of the edge.

[0053] Please refer to Figure 13 , Figure 14 , Figure 15 and Figure 16 If the edge of the return block 15 is a sharp right angle, when the occupant sits on the car seat, the sheet-like occupant sensing device 2 attached to the foam A surface 101 will be subjected to downward pressure and upward pressure from the sharp right angle, which will increase the possibility of damage. Therefore, the edge of the return block 15 is rounded 17 to avoid wear of the sheet-like occupant sensing device 2 by the sharp angle and to reduce the bending angle of the sheet-like occupant sensing device 2, so as to avoid damage caused by bending.

[0054] In a preferred embodiment, the distance between the stress-relieving portion 13 and the edge of the preset area 1011 is 0-3 mm.

[0055] In a preferred embodiment, the stress-relieving part 13 has a length of 10-20 mm along the length direction of the sheet-like occupant sensing device 2, and a width of 0-3 mm along the width direction of the sheet-like occupant sensing device 2.

[0056] Specifically, the length, width, and height of the stress-relieving part 13 are determined by the seat design requirements and the magnitude of the stress to be relieved.

[0057] In a preferred embodiment, along the thickness direction of the foam 1, the height h1 of the stress-relieving part 13 and the height h2 of the functional area 11 satisfy h1 = k·h2, where the value of k ranges from 0.3 to 1.

[0058] Specifically, when the foam 1 is provided with soft foam near the passenger side and its height is the same as that of the functional area 11, the stress-relieving part 13 can penetrate the soft foam, and the bottom of the stress-relieving part 13 is flush with the bottom surface of the functional area 11. In this case, k is equal to 1. Alternatively, it can not penetrate the soft foam. In this case, k is less than 1 and is between 0.3 and 1. The specific size depends on the design requirements.

[0059] In a preferred embodiment, the cut section of the stress-relieving part 13 is quadrilateral or triangular.

[0060] Specifically, when the stress-relieving part 13 is opened, if the cutter cuts downwards along both ends of the length dimension of the stress-relieving part in the vertical direction, the shape of the side cross section of the stress-relieving part 13 is a quadrilateral. If the cutter does not cut downwards along the end of the length dimension of the stress-relieving part away from the functional area 11, the shape of the side cross section is a triangle.

[0061] In a preferred embodiment, the functional area 11 is the groove 1101 of the foam 1, and the stress relief part 13 is arranged on both sides of the groove 1101 in the stress concentration area 1012.

[0062] Please refer to Figure 2 and Figure 3 As shown, the foam 1 has a certain thickness and requires the human occupancy sensor to be attached to the surface near where the occupant sits.

[0063] In the first application scenario, please refer to... Figure 7 , Figure 8 , Figure 11 (One side has a stress-relieving part 13) Figure 1 , Figure 12 (There are stress relief parts 13 on both sides). When the wiring harness of the human body occupancy sensor is routed out from the tail of the seat cushion, there is a clamping groove near the tail of the seat cushion. At this time, the clamping groove is the groove 1101 of the foam 1 proposed in this embodiment.

[0064] In the second application scenario, please refer to... Figure 5 , Figure 6 , Figure 13 (Both sides have stress-relief sections 13 on one side) Figure 14 (Both sides have stress-relieving parts 13), the seat cushion has a groove 1101 located in the middle of the foam 1, the groove 1101 is used to install various parts of the seat.

[0065] In both scenarios, the tension of the seat cover exerts a downward force on the human occupancy sensor, while the foam A surface 101 exerts an upward force on the human occupancy sensor. The combined effect of these two forces on the human occupancy sensor affects its lifespan. The tension groove in the stress concentration zone 1012 experiences even greater stress concentration, making the sheet-like occupant sensing device 2 attached to it more susceptible to damage. Therefore, the stress-relieving part 13 is provided in the groove 1101 in the stress concentration zone 1012 to release stress and solve the above problems.

[0066] In a preferred embodiment, the functional area 11 is the boundary area 1103 between soft and rigid foam or the through-hole 1102 for the occupant sensing device.

[0067] In the third application scenario, please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, when the wiring harness of the human body occupancy sensor is routed from the rear of the seat cushion, there is a soft and hard foam interface near the rear of the seat cushion. At this time, the soft and hard foam interface area 1103 is the functional area 11.

[0068] In the fourth application scenario, please refer to... Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 15 and Figure 16 As shown, the functional area 11 has at least one rectangular first opening that penetrates the soft foam. The first opening is the occupant sensing device through-hole 1102. One end of the sheet-like occupant sensing device 2 is located on one side of the first opening, and the other end penetrates the first opening and exits the foam 1 through the first opening. The edge of the sheet-like occupant sensing device 2 attached to the first opening is provided with the stress-relieving part 13, which is used to remove the stress at the occupant sensing device through-hole 1102 and prevent the occupant sensing device 2 from being damaged.

[0069] Specifically, under normal circumstances, the stress-relieving part 13 is located on one or both sides of the stress concentration area 1012, depending on the seat design requirements. When it is located on both sides, the stress-relieving parts 13 on both sides can be parallel or extend and intersect, resulting in a variety of shapes.

[0070] Example 2

[0071] Based on Embodiment 1, this embodiment proposes a seat, including the foam 1 described in Embodiment 1 and a sheet-shaped occupant sensing device 2, wherein the sheet-shaped occupant sensing device 2 is disposed in the preset area 1011.

[0072] Specifically, the seat includes a seat frame, a foam 1 as described in Embodiment 1 covering the seat frame, a sheet-like occupant sensing device 2 attached to surface A 101 of the foam, and a decorative layer covering the foam 1. This seat offers good comfort, effectively protects the sheet-like occupant sensing device 2, and simultaneously mitigates damage to electronic components and enhances the riding experience.

[0073] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A type of seat foam, characterized in that, include: Foam A side (101), wherein foam A side (101) is the side of the foam closest to the occupant; Functional area (11), the functional area is located on the foam A surface (101), the functional area (11) has at least one transition surface (14), the transition surface (14) is a small plane with an angle A (141) greater than or equal to 90 degrees with the foam A surface (101); A preset area (1011) is used to configure a sheet-like occupant sensing device (2), wherein the preset area (1011) is the orthographic projection area of ​​the sheet-like occupant sensing device (2) on the foam A surface (101); Stress concentration area (1012), wherein the stress concentration area (1012) is the overlap of the functional area (11) and the preset area (1011). The stress radiation region of the stack; The stress-relieving part (13) is a cut at the junction of the foam A surface (101) and the transition surface (14) located outside the preset area (1011) within the stress concentration area (1012), used to remove stress and reduce the stress transmission of the stress concentration area (1012) to the sheet-like occupant sensing device (2), thereby preventing damage to the occupant sensing device (2); within the stress concentration area (1012), the stress-relieving part (13) is arranged on both sides of the preset area (1011) for bidirectional stress relief, and the preset area between the stress-relieving parts (13) on both sides forms a return block (15), which is used to return the occupant sensing device (2) to its original position. The cut section of the stress-relieving part (13) is quadrilateral or triangular.

2. The seat foam according to claim 1, characterized in that: The edges of the return block (15) are rounded. Angles are used to enhance the smoothness of edges.

3. The seat foam according to claim 1, characterized in that: The stress-relieving part (13) and the preset area (1011) The distance between the edges is 0-3mm.

4. The seat foam according to claim 1, characterized in that: Along the length direction of the sheet-like occupant sensing device (2), the length of the stress-relieving part (13) is 10-20 mm, and along the width direction of the sheet-like occupant sensing device, the width of the stress-relieving part (13) is 0-3 mm.

5. The seat foam according to claim 1, characterized in that: Along the thickness direction of the seat foam, the height h1 of the stress-relieving part (13) and the height h2 of the functional area (11) satisfy h1=k·h2, where the value of k ranges from 0.3 to 1.

6. The seat foam according to claim 1, characterized in that: The functional area (11) is the groove of the foam. (1101) The stress relief part (13) is provided on both sides of the groove (1101) in the stress concentration area (1012).

7. The seat foam according to claim 1, characterized in that: The functional area (11) is either the boundary area between soft and hard foam (1103) or the passageway for the occupant sensing device (1102).

8. A type of seat, characterized in that, Includes seat foam (1) as described in any one of claims 1 to 7, and sheet-shaped occupant sensing device (2), wherein the sheet-shaped occupant sensing device (2) is disposed in the preset area (1011).

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