Automobile seat based on 3d printing foam body

Abstract

The automobile seat comprises a seat frame assembly and a backrest framework assembly rotationally installed at the rear end of the seat frame assembly, seat cushion foam is arranged on the seat frame assembly and is made through 3d printing, a first wrapping structure is arranged on the circumferential edge of the lower side of the seat cushion foam, and a second wrapping structure is arranged on the circumferential edge of the lower side of the seat cushion foam. The first wrapping structure is connected to the edge of the seat frame assembly; backrest foam is arranged on the front side of the backrest framework assembly, the backrest foam is made through 3D printing, a second wrapping structure is arranged on the circumferential edge of the back side of the backrest foam, and the second wrapping structure is connected to the edge of the backrest framework assembly. The seat has the beneficial effects that the foam body and the wrapping structure on the rear side of the foam body are directly formed in a 3d printing mode, the foam body can be rapidly assembled on the corresponding framework structure, the assembling convenience and stability are improved, and the lightweight design of the seat is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to an automobile seat based on a 3D printed foam body. Background Art

[0002] With the automotive industry's pursuit of energy conservation, emission reduction and fuel efficiency, the lightweight design of car seats has become a key link. In the prior art, a seat is composed of a seat frame, a backrest frame, foam and a mask, wherein the support frame of the seat frame and the backrest is usually a rectangular metal frame, and the foam body is completely covered on the support frame. However, there are many problems with the foam body on the traditional car seat frame. In terms of structure, the foam body is large in size and heavy in weight, and has the defects of inconvenient installation, large space occupation and affecting vehicle performance; in terms of production, the traditional production process is difficult to accurately control the internal pore structure of the foam, making the physical properties of the foam product unstable; in terms of installation, the installation method of the foam body and the frame is rough, and simple glue is often used. This method is both labor-intensive and difficult to ensure installation accuracy, resulting in uneven seat quality.

[0003] Therefore, as an important part of car interior, the lightweight design of seats becomes particularly important. Summary of the invention

[0004] In view of this, the present invention provides a car seat based on 3D printed foam, which realizes a lightweight design of the seat and has the advantage of easy installation.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] A car seat based on 3D printed foam, the key of which is: comprising a seat frame assembly and a backrest frame assembly rotatably mounted on the rear end of the seat frame assembly, the seat frame assembly is provided with a seat cushion foam, the seat cushion foam is made by 3D printing, and a first wrapping structure is provided on the lower circumferential edge of the seat cushion foam, and the first wrapping structure is connected to the edge of the seat frame assembly;

[0007] A backrest foam is arranged on the front side of the backrest frame assembly. The backrest foam is made by 3D printing, and a second wrapping structure is arranged on the circumferential edge of the back side of the backrest frame assembly. The second wrapping structure is connected to the edge of the backrest frame assembly.

[0008] With the above structure, the design of the first wrapping structure and the second wrapping structure can facilitate the assembly of the foam body on the corresponding skeleton structure, thereby improving the convenience and stability of assembly. Secondly, the use of 3D printing technology can directly, quickly and accurately manufacture the foam body, and accurately control the structure and material distribution of the foam body, and design a lattice structure or porous structure with lightweight characteristics, which effectively reduces the weight of the car seat while ensuring the strength and comfort of the seat.

[0009] Preferably, the first wrapping structure is a downwardly open slot, which is buckled onto the circumferential edge of the seat frame assembly.

[0010] Preferably, the seat cushion foam and the backrest foam are both made of thermoplastic polyurethane rubber by 3D printing.

[0011] Preferably: a first soft support area is provided in the middle and / or both side areas of the backrest foam;

[0012] And / or a second soft supporting area is provided in the middle and / or on both sides of the seat cushion foam.

[0013] Preferably, the backrest frame assembly includes a lower support member, which is used to support the middle and lower part of the user's back, and adapters are installed on the lower sides of both ends of the lower support member, and the adapters are rotatably installed to the rear end of the seat frame assembly; an upper support member extending upward is fixedly connected to the middle position of the top of the lower support member, and the upper support member is used to support the middle and upper part of the user's back.

[0014] Preferably, the lower supporting member is configured as an arc-shaped arch structure.

[0015] Preferably, the upper supporting member is a long strip member, the cross section of which has an N-shaped structure and supporting flanges extending outward from the lower ends of both sides of the N-shaped structure.

[0016] Preferably, a support plate is fixedly mounted on the front side of the upper support member and the lower support member, and the lower middle portion of the support plate is hollowed out.

[0017] Preferably, the second wrapping structure has a first annular groove arranged on the rear side of the backrest foam, and the first annular groove is sleeved on the circumferential edge of the support plate.

[0018] Preferably, first side support portions tilted upward are formed on both sides of the seat cushion foam, and second side support portions tilted upward are formed on both sides of the backrest foam.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The car seat provided by the present invention is used to directly form the foam body and the wrapping structure on the rear side thereof by 3D printing, so that the foam body can be quickly assembled on the corresponding skeleton structure, thereby improving the convenience and stability of assembly. Secondly, the 3D printing technology can be used to directly, quickly and accurately manufacture the foam body, ensure the consistency of the foam body structure, and at the same time, can easily realize personalized customized production according to the specific needs and requirements of the user. On the other hand, 3D printing can accurately control the structure and material distribution of the foam body, and design a lattice structure or porous structure with lightweight characteristics. On the premise of ensuring the strength and comfort of the seat, the weight of the car seat is effectively reduced, thereby reducing the overall energy consumption of the car, improving fuel economy or extending the cruising range of electric vehicles.

[0021] 2. In the car seat provided by the present invention, the seat cushion foam and the backrest foam are both made of thermoplastic polyurethane rubber, which has excellent comfort, wear resistance and compressive strength, and is lighter than traditional seats, thereby realizing a lightweight design of the car seat.

[0022] 3. The car seat provided by the present invention can enhance the seat support and improve the riding comfort by setting the soft support area, ensuring that all parts of the body can get comfortable support and avoiding fatigue and discomfort caused by excessive local pressure. In addition, the soft and hard partitions of the foam body can be directly printed through 3D printing technology, which improves production efficiency and reduces production costs.

[0023] 4. The car seat provided by the present invention designs the lower supporting member into an arc-shaped arch structure, which not only improves the structural strength, but also enables the lower supporting member to better disperse the pressure on the seat and prevent the frame from deforming. On the other hand, it can also save materials and costs, and has the technical advantages of simple structure, easy design and installation.

[0024] 5. By reserving multiple bumps on the backrest foam, the functional parts can be better embedded in the backrest without occupying the external space of the seat. It has the advantages of high integration, compact structure, neat and beautiful appearance and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of a car seat (the backrest foam 4 only shows half of the structure);

[0026] Figure 2 is another structural schematic diagram of a car seat;

[0027] Figure 3 is a cross-sectional view of a car seat;

[0028] Figure 4A schematic diagram showing the structure of a car seat from the back side (the cover plate 6 is hidden);

[0029] Figure 5 It is a schematic diagram of the structure of the seat cushion foam 3 and the backrest foam 4;

[0030] Figure 6 A schematic diagram showing the structure of the internal frame of a car seat;

[0031] Figure 7 It is a structural schematic diagram of the backrest frame assembly 2;

[0032] Figure 8 is an exploded schematic diagram of the backrest frame assembly 2 and the cover plate 6;

[0033] Fig. 9 It is a right side view when the upper supporting member 23 and the lower supporting member 21 are connected;

[0034] Fig.10 It is a structural schematic diagram of the upper supporting member 23 from the back side perspective;

[0035] Fig.11 It is a schematic diagram showing the back structure of the support plate 24. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with embodiments and drawings.

[0037] like Figure 1 , 3 As shown in Figure 6, a car seat based on 3D printed foam body includes a seat frame assembly 1 and a backrest frame assembly 2 rotatably mounted on the rear end of the seat frame assembly 1, wherein a seat cushion foam 3 is provided on the seat frame assembly 1, and a first wrapping structure 31 is provided on the lower circumferential edge of the seat cushion foam 3, and the first wrapping structure 31 is connected to the edge of the seat frame assembly 1. A backrest foam 4 is provided on the front side of the backrest frame assembly 2, and a second wrapping structure 41 is provided on the back circumferential edge of the backrest foam 4, and the second wrapping structure 41 is connected to the edge of the backrest frame assembly 2. In this embodiment, the seat cushion foam 3 and the backrest foam 4 are both made by 3D printing, and the seat cushion foam 3 and the backrest foam 4 are covered with a face cover (not shown in the figure).

[0038] Based on the above structural design, the design of the first wrapping structure 31 and the second wrapping structure 41 can facilitate the assembly of the foam body on the corresponding skeleton structure, thereby improving the convenience and stability of assembly. Secondly, the use of 3D printing technology can directly, quickly and accurately manufacture the foam body, ensure the consistency of the foam body structure, and at the same time, can easily realize personalized customized production according to the specific needs and requirements of the user. On the other hand, 3D printing can accurately control the structure and material distribution of the foam body, design a lattice structure or porous structure with lightweight characteristics, and effectively reduce the weight of the car seat while ensuring the strength and comfort of the seat.

[0039] In this embodiment, the seat cushion foam 3 and the backrest foam 4 are both made of thermoplastic polyurethane rubber 3D printing. The foam of thermoplastic polyurethane rubber 3D printing has excellent comfort, wear resistance and compressive strength, and is lighter than traditional seats, which can realize the lightweight design of car seats.

[0040] The first wrapping structure 31 can be connected to the edge of the seat frame assembly 1 by means of a ring sleeve, embedding, buckling, etc. Figure 3 The first wrapping structure 31 is a downwardly open slot, which is buckled on the circumferential edge of the seat frame assembly 1.

[0041] like Figure 5 As shown, the seat cushion foam 3 has first side support parts 3a tilted upward on both sides, which can support the outside of the user's buttocks and legs. The backrest foam 4 has second side support parts 4a tilted upward on both sides, which can support the outside of the user's arms and shoulders.

[0042] Please refer to Figure 5 , the middle and / or both side areas of the backrest foam 4 are provided with a first soft support area a, and the hardness of the first soft support area a is less than the hardness of the main body of the backrest foam 4. In this embodiment, the first soft support area a is distributed on the second side support parts 4a in the middle and both sides of the front surface of the backrest foam 4. The first soft support area a in the middle of the backrest foam 4 corresponds to the area where the user's back rests, and two first soft support areas a are arranged on the second side support part 4a from top to bottom. The upper first soft support area a is the area where the user's shoulder rests, and the lower first soft support area a is the area where the user's arm rests.

[0043] Re-attend Figure 5, the middle and / or both side areas of the seat cushion foam 3 are provided with a second soft support area b, and the hardness of the second soft support area b is less than the hardness of the main body of the seat cushion foam 3. In this embodiment, the second soft support area b is distributed on the first side support part 3a in the middle and both sides of the upper surface of the seat cushion foam 3. The second soft support area b in the middle of the seat cushion foam 3 is the surface area that the user's buttocks touch when sitting. The left and right sides of this area are designed as an arc structure that bends toward the middle, which ensures comfort while preventing the body from sinking excessively after sitting for a long time. The second soft support area b on the first side support part 3a is the area that the outer side of the user's thigh rests on.

[0044] By setting up soft support areas, the seat support can be enhanced while the riding comfort can be improved, ensuring that all parts of the body can be comfortably supported and avoiding fatigue and discomfort caused by excessive local pressure. In addition, the foam body and the soft support area on the foam body can be directly printed through 3D printing technology, which improves production efficiency and reduces production costs. In actual application, the first soft support area a and the second soft support area b are not limited to the above distribution method. Manufacturers can customize the design according to the needs of different customer groups to produce different soft and hard partitions.

[0045] Please refer to Figure 6 The backrest frame assembly 2 includes a lower support member 21, which is used to support the middle and lower part of the user's back. The lower sides of both ends of the lower support member 21 are equipped with adapters 22, and the adapters 22 are rotatably installed to the rear end of the seat frame assembly 1. An upper support member 23 extending upward is fixedly connected to the middle position of the top of the lower support member 21, and the upper support member 23 is used to support the middle and upper part of the user's back. In this embodiment, the midpoint of the top of the lower support member 21 and the two end points of the lower side of the lower support member 21 form a triangular frame, which can ensure the structural strength of the lower support member 21. In this design, by designing the backrest frame assembly 2 into an upper support member 23 and a lower support member 21 connected up and down, the lower support member 21 can provide strong support for the middle and lower part of the user's back and waist, and the upper support member 23 can provide strong support for the middle and upper part of the user's back. Such a structural design can improve the structural strength of the backrest frame assembly 2, and when the backrest foam 4 is installed on the backrest frame assembly 2, it can ensure that the overall force of the backrest is balanced, thereby improving the overall stability of the seat.

[0046] Further, refer to Figure 6 The lower support member 21 is constructed as an arc-shaped arch structure. The advantage of this design is that it improves the structural strength, so that the lower support member 21 can better disperse the pressure on the seat and prevent the frame from deforming. On the other hand, it can also save materials and costs, and has the technical advantages of simple structure, easy design and installation.

[0047] In this embodiment, the lower support member 21 is made of a bent pipe. Considering this, the lower support member 21 not only has good strength and toughness, but also has a light weight, which is conducive to the lightweight design of the seat. In addition, the lower support member 21 made of a bent pipe can more effectively utilize space to facilitate the installation of other functional components, such as pipes for seat heating and ventilation devices, circuits for adjustment structures, etc., and has the advantages of high integration and compact structure. The lower end of the upper support member 23 is fixedly welded to the middle position of the top of the lower support member 21.

[0048] Reference Figure 6 and Fig.10 The upper support member 23 is a long strip member, and its cross section has an N-shaped structure and support flanges 231 extending outward from the lower ends of both sides of the N-shaped structure. The N-shaped cross section of the long strip member can enhance the compression resistance of the upper support member 23 and maintain the stability of the structure. The support flanges 231 can be easily connected with adjacent components during seat assembly, thereby enhancing the stability of the connection.

[0049] Refer to Figure 6 and Fig.10 The lower end surface of the upper support member 23 is provided with an irregular arc structure 232, and the arc structure 222 matches the top profile of the arc-shaped arched lower support member 21. Such a structural design can increase the contact area between the upper support member 23 and the lower support member 21, enhance the firmness of welding, and improve the welding quality.

[0050] In this embodiment, the upper support member 23 is a sheet metal part, which has the technical advantages of excellent strength and good stability. Fig. 9 The upper support member 23 is constructed as a slightly backward-distorted structure, which can better fit the physiological curve of the human spine, making the seat back more ergonomically designed.

[0051] like Figure 7 and 8 As shown, a support plate 24 is fixedly installed on the front side of the upper support member 23 and the lower support member 21, and the support plate 24 can increase the support area of ​​the backrest frame assembly 2, further improving the support strength of the backrest. In this embodiment, the lower part of the support plate 24 is a hollow design, which reserves installation space inside the seat back, and more functional components can be integrated without increasing the thickness of the backrest.

[0052] In this embodiment, the support plate 24 is made of thermoplastic polyurethane rubber. Considering that the support plate 24 has the advantages of light weight, high strength and good toughness, it is not easy to deform when subjected to external force, and can provide reliable support for the seat to ensure riding safety.

[0053] Furthermore, Figure 7 and Figure 8 As shown, the peripheral edge of the hollow area in the lower part of the support plate 24 is fixedly connected to the lower support member 21, combined with Figure 4 and 11 As shown, a positioning groove 241 adapted to the N-shaped structure is formed on the rear side of the support plate 24, and the support plate 24 is locked on the support flange 231 by fasteners 7 at the two side areas corresponding to the positioning groove 241. In this embodiment, the fasteners 7 are bolts. Such a structural design can ensure the stability of the installation of the support plate 24, and it will not shake left and right, and has high reliability.

[0054] like Fig.11 As shown, a connecting lug 24a is provided at the upper edge of the hollow area in the middle and lower part of the support plate 24. The connecting lug 24a is fixed to the rear side of the lower support member 21 by bolts. There are two connecting lugs 24a. Figure 4 It can be seen that the support plate 24 is fixedly connected to the front side of the support flange 231 at the two side areas corresponding to the positioning groove 241. Such a design has the advantages of high connection strength and good stability.

[0055] Please refer to Figure 4 A pad 8 is provided between the two surfaces where the support plate 24 contacts the two support flanges 231 . The pad 8 can elastically tighten the support plate 24 , provide better support and stability, prevent the fastener 7 from loosening, and reduce the wear between the support plate 24 and the upper support member 23 .

[0056] Please refer to Figure 8 The peripheral edge of the support plate 24 is provided with a flanged side wing 242 protruding forward, and the height of the flanged side wing 242 protruding forward gradually increases from top to bottom. Such a design can effectively support the side wing areas on both sides of the backrest.

[0057] like Figure 4 and Figure 5 As shown, the second wrapping structure 41 has a first annular groove 411 arranged on the rear side of the backrest foam 4, and the first annular groove 411 is sleeved on the circumferential edge of the support plate 24. Such a structure can further improve the convenience of assembly and ensure that the backrest foam 4 is installed more firmly.

[0058] Please refer to Figure 6 and Figure 8 A retaining frame 221 is connected between the adapters 22 at both ends of the lower support member 21. Figure 3 and Figure 4 It can be seen that in this embodiment, the second wrapping structure 41 is a structure folded backward and downward, which is distributed on the upper end and the circumferential edges of the left and right sides of the backrest foam 4, and the first annular groove 411 is adapted to the flanged side wing 242 of the support plate 24. Figure 5As shown, a third wrapping structure 43 bent backward is provided at the rear lower end of the backrest foam 4. The third wrapping structure 43 has a second annular groove 431, and the second annular groove 431 is sleeved on the retaining frame 221 (not shown in the figure).

[0059] Since the backrest foam 4 is fixed on the support plate 24 in a ring-shaped manner and does not fully cover the rear side of the backrest frame assembly 2, for the sake of the overall structural beauty, such as Figure 2 and Figure 8 As shown, a cover plate 6 is fixedly mounted on the rear side of the backrest frame assembly 2. Figure 4 As shown, in this embodiment, the circumferential edge of the second wrapping structure 41 is provided with a second connection structure 44 recessed toward the inside of the backrest, the recessed depth of the second connection structure 44 is adapted to the thickness of the cover plate 6, and the second connection structure 44 is adapted to the circumferential contour of the upper part of the cover plate 6. During installation, the backrest foam 4 is assembled first, and then the cover plate 6 is installed. The cover plate 6 can be connected to the back side of the backrest foam 4 as a whole, thereby ensuring the overall aesthetics of the seat back.

[0060] Please refer to Figure 4 , a plurality of protrusions 45 are distributed on the back side of the backrest foam 4, and the protrusions 45 are provided with a snap-in groove c for installing the backrest functional parts, and the functional parts may be ventilation devices and massage devices that need to be arranged in the backrest. Combined with the structural design of the lower support member 21 and the support plate 24, the lower support member 21 and the support plate 24 do not interfere with the installation of the functional parts, and the protrusions 45 can be exposed in the space surrounded by the arc-shaped arch structure, so that the functional parts can be better embedded in the backrest and will not occupy the external space of the seat. It has the advantages of high integration, compact structure, neat and beautiful appearance, and convenient installation, and it can choose whether to install such functional parts according to the needs of users.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A car seat based on 3D printed foam, characterized in that: The invention comprises a seat frame assembly (1) and a backrest frame assembly (2) rotatably mounted on the rear end of the seat frame assembly (1); the seat frame assembly (1) is provided with a seat cushion foam (3); the seat cushion foam (3) is made by 3D printing, and a first wrapping structure (31) is provided on the circumferential edge of the lower side of the seat cushion foam (3); the first wrapping structure (31) is connected to the edge of the seat frame assembly (1); A backrest foam (4) is provided on the front side of the backrest frame assembly (2); the backrest foam (4) is made by 3D printing, and a second wrapping structure (41) is provided on the circumferential edge of the back side; the second wrapping structure (41) is connected to the edge of the backrest frame assembly (2).

2. The 3D printed foam-based car seat according to claim 1, characterized in that: The first wrapping structure (31) is a downwardly open slot, which is buckled onto the circumferential edge of the seat frame assembly (1).

3. The 3D printed foam-based car seat according to claim 1, characterized in that: The seat cushion foam (3) and the backrest foam (4) are both made of thermoplastic polyurethane rubber by 3D printing.

4. The 3D printed foam-based car seat according to claim 1, characterized in that: The middle and / or two side regions of the backrest foam (4) are provided with a first soft support region (a); And / or the middle and / or both side areas of the seat cushion foam (3) are provided with a second soft supporting area (b).

5. The 3D printed foam-based car seat according to claim 1, characterized in that: The backrest frame assembly (2) comprises a lower support member (21), the lower support member (21) being used to support the middle and lower part of the user's back; adapters (22) are installed on the lower sides of both ends of the lower support member (21), and the adapters (22) are rotatably installed on the rear end of the seat frame assembly (1); an upper support member (23) extending upward is fixedly connected to the middle position of the top of the lower support member (21), and the upper support member (23) is used to support the middle and upper part of the user's back.

6. The 3D printed foam-based car seat according to claim 5, characterized in that: The lower supporting member (21) is configured as an arc-shaped arch structure.

7. The 3D printed foam-based car seat according to claim 5, characterized in that: The upper support member (23) is a long strip member, and its cross section has an N-shaped structure and support flanges (231) extending outward from the lower ends of both sides of the N-shaped structure.

8. The 3D printed foam-based car seat according to claim 5, characterized in that: A support plate (24) is fixedly mounted on the front sides of the upper support member (23) and the lower support member (21), and the lower middle portion of the support plate (24) is hollowed out.

9. The 3D printed foam-based car seat according to claim 8, characterized in that: The second wrapping structure (41) has a first annular groove (411) arranged on the rear side of the backrest foam (4), and the first annular groove (411) is sleeved on the circumferential edge of the support plate (24).

10. The 3D printed foam-based car seat according to claim 1, characterized in that: The seat cushion foam (3) is formed with first side support parts (3a) inclined upward on both sides, and the backrest foam (4) is formed with second side support parts (4a) inclined upward on both sides.

Images