Lightweight high-strength seat back plate

Abstract

The utility model discloses a light-weight high-strength seat back plate which comprises an injection molding part, a jute fiber plate and a facing layer, the facing layer is wrapped on the front face of the jute fiber plate, the injection molding part is arranged on the back face of the jute fiber plate, the injection molding part is of a framework structure, and the jute fiber plate and the injection molding part are integrally formed through mould pressing. A reinforcing rib and a connecting piece fixed with the automobile seat are formed on the injection molding piece during compression molding; the jute fiber board is provided with a convex block and a groove, a first assembly block is formed and partially clamped into the groove when the injection molding part is subjected to compression molding, a compression molding groove is formed in the first assembly block, and the convex block is matched with the compression molding groove so that the jute fiber board and the injection molding part can achieve a better assembly effect, and a second assembly block is further formed when the injection molding part is subjected to compression molding. The second assembly block is provided with a mold pressing face, the mold pressing face increases the bonding area when the injection molding part is bonded with the jute fiber board, the facing layer extends out of the margin from the lower portion of the jute fiber board, and the margin is provided with a hook-and-loop fastener and is attached to the lower portion of the automobile seat.

Description

Technical Field

[0001] The utility model relates to the field of automobile interior decoration, in particular to a seat backboard. Background Art

[0002] Modern car seats typically feature a back panel on the back, which provides support for the seat back. Currently, adhesive layers are often used to bond the back panel's main body to the injection-molded part, and the back panel's main body to the facing. This results in low bond strength, a complex process, and significant pollution issues.

[0003] A Chinese utility model patent with publication number CN209141960U discloses a hemp fiber seat back panel that uses a compression molding method to combine an injection molded part with a hemp fiberboard. However, the bonding strength is insufficient, and the injection molded part and the hemp fiberboard are prone to misalignment and falling off.

[0004] Chinese utility model patent publication number CN207059843U discloses a seat back panel and a seat having the modified seat back panel, providing a seat back panel mounting structure that is easy to install. Summary of the Invention

[0005] The purpose of the utility model is to provide a lightweight and high-strength seat backboard to solve the problem of easy misalignment and falling off between the injection molded parts and the hemp fiberboard in the background technology, and to improve the bonding effect between the injection molded parts and the hemp fiberboard.

[0006] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: a lightweight and high-strength seat back panel, comprising an injection-molded part, a hemp fiberboard and a surface finishing layer, the front of the hemp fiberboard being covered with the surface finishing layer, and the back being provided with an injection-molded part, the hemp fiberboard and the injection-molded part being combined by compression molding, the injection-molded part being a skeleton structure, the surface finishing layer being made of artificial leather, and the surface finishing layer being glued to the hemp fiberboard.

[0007] A further technical solution also includes that the interior of the hemp fiberboard is filled with air.

[0008] To further enhance the bond strength between the injection-molded part and the hemp fiberboard, the present invention provides a technical solution that includes transverse and / or longitudinal reinforcing ribs on the compression-molded part. These ribs enhance the strength and rigidity of the part, improving product durability while avoiding unnecessary weight.

[0009] A further technical solution also includes: the cross section of the skeleton structure formed by the injection molded part is triangular, and one corner of the triangle points to the outside of the hemp fiberboard.

[0010] In order to more conveniently install the seat back panel to the seat, the technical solution provided by the present invention includes: a connecting piece is further provided on the injection molded part, and the connecting piece is provided with a limited position surface.

[0011] In order to prevent the injection molded part and the hemp fiberboard from being misaligned and falling off, the technical solution provided by the utility model includes: the injection molded part is also provided with a first assembly block, the first assembly block is provided with a molded groove, the hemp fiberboard is provided with a protrusion, the protrusion is adapted to the molded groove, and the first assembly block is combined with the hemp fiberboard through molding.

[0012] A further technical solution also includes: the injection molded part is further provided with a second assembly block, the second assembly block is provided with a molding surface, and the molding surface is combined with the hemp fiberboard through molding.

[0013] A further technical solution also includes: the flax fiberboard is further provided with a groove, and the groove limits the position of the injection molded part when the injection molded part is molded.

[0014] In order to connect the seat back panel to the seat and avoid wrinkles and warping of the surface finishing layer of the seat back panel when the seat backrest angle is adjusted, the technical solution provided by the utility model includes: the surface finishing layer extends a margin from the bottom of the hemp fiberboard, and the margin extended by the surface finishing layer is also provided with Velcro. The seat back panel is assembled to the car seat, and corresponding Velcro is provided under the car seat.

[0015] The advantages and beneficial effects of the utility model are:

[0016] The injection molded part is molded onto the hemp fiberboard on the back side by molding, and the artificial leather surface layer is bonded to the hemp fiberboard on the front side by hot pressing, so that the three are closely combined and the degree of integration of the seat back panel is improved.

[0017] The injection molded parts are set into a skeleton structure, which can further form horizontal and vertical reinforcement ribs, thereby improving the structural strength of the seat back.

[0018] A protrusion is provided on the hemp fiberboard, and a molded groove inside the first assembly block that engages with the protrusion is formed when the injection molded part is molded; a groove is provided on the hemp fiberboard, and the injection molded part is snapped into the groove when the injection molded part is molded, thereby avoiding dislocation and falling off caused by insufficient bonding force between the injection molded part and the hemp fiberboard.

[0019] The interview layer extends out from under the hemp fiberboard, and the excess is provided with Velcro, which is attached to the bottom of the car seat to prevent wrinkles and warping of the interview layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the seat back structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic cross-sectional view of an embodiment of the present invention along line AA;

[0022] Figure 3 This is a schematic cross-sectional view of an embodiment of the present invention along line BB;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of an embodiment of the present invention along CC;

[0024] Figure 5 It is a schematic cross-sectional structure diagram of an embodiment of the utility model along DD;

[0025] Figure 6 This is a schematic diagram of the back of a seat according to an embodiment of the present invention;

[0026] Reference numerals:

[0027] 10-injection molded part, 11-transverse reinforcement rib, 12-longitudinal reinforcement rib, 13-connecting part, 14-limiting surface, 15-first assembly block, 16-molded groove, 17-second assembly block, 18-molded surface, 19-triangular cross section, 20-hemp fiberboard, 21-bump, 22-groove, 23-cavity, 30-surface finishing layer, 31-surface finishing layer allowance, 32-Velcro, 40-seat, 41-mounting hole. DETAILED DESCRIPTION

[0028] The following is a combination of drawings and examples to further describe the specific implementation of the present invention. The following examples are only used to more clearly illustrate the technical solution of the present invention, and are not intended to limit the scope of protection of the present invention. Example

[0029] See also Figures 1 to 6 A lightweight, high-strength seat back panel includes an injection molded part 10, a hemp fiberboard 20, and a facing layer 30. The front surface of the hemp fiberboard 20 is coated with the facing layer 30, and the back surface of the injection molded part 10 is provided. The hemp fiberboard 20 and the injection molded part 10 are combined together by compression molding. The injection molded part 10 has a skeleton structure. The facing layer 30 is made of artificial leather and is glued to the hemp fiberboard 20. The hemp fiberboard 20 is double-layered, and a cavity 23 is formed within the double-layered hemp fiberboard.

[0030] The injection molded part 10 has transverse reinforcing ribs 11 and longitudinal reinforcing ribs 12. The cross-section of the skeleton structure formed by the injection molded part 10 is triangular, and the triangular cross-section 19 is a corner of the hemp fiberboard 20. The longitudinal and transverse reinforcing ribs can improve the strength and rigidity of the injection molded part 10, while improving the durability of the product and avoiding adding unnecessary weight to the product. The triangular cross-section 19 of the skeleton structure formed by the transverse reinforcing ribs 11 and the longitudinal reinforcing ribs 12 is not only easy to demold during injection molding, but also has a larger molded bonding area under the same amount of plastic conditions. The triangular design also makes the seat back panel have higher strength and resistance to deformation in the direction outward along the hemp fiberboard 20.

[0031] The injection molded part 10 also includes a first assembly block 15, which is provided with a molded groove 16. The flax fiberboard 20 is provided with a protrusion 21 that fits into the molded groove 16. The first assembly block 15 is assembled with the flax fiberboard 20 through molding. The injection molded part 10 also includes a second assembly block 17, which is provided with a molded surface 18. The molded surface 18 is assembled with the flax fiberboard 20 through molding. The flax fiberboard 20 also includes a groove 22, which limits the position of the injection molded part 10 during molding.

[0032] During the compression molding process of the injection molded part 10, due to the corresponding protrusion 21 on the flax fiberboard 20, the mold used for compression molding and the adjustment of the injection molding parameters will result in the injection molding of the first assembly block 15. Since the first assembly block 15 is located outside the protrusion 21 on the flax fiberboard 20, and the protrusion 21 restricts the flow of the injected plastic, a molded groove 16 is naturally formed, tightly coupled with the protrusion 21, restricting the movement of the injection molded part 10 on the plane of the flax fiberboard 20. Similarly, the groove 22 provided at the location where the flax fiberboard 20 is compression molded also restricts relative movement between the injection molded part 10 and the flax fiberboard 20. The second assembly block 17 is provided with a compression molding surface, primarily to enhance the bonding effect by increasing the bonding area during compression molding.

[0033] The injection molded part 10 is further provided with a connecting member 13, which is provided with a limiting surface 14. When the seat back is installed, the width of the limiting surface 14 is the same as the width of the mounting hole 41 of the seat 40, and the limiting surface 14 can limit the movement of the seat back in the left and right directions of the limiting surface 14.

[0034] The facing layer 30 extends from below the hemp fiberboard 20. Velcro 32 is provided on the remaining portion 31 of the facing layer. The seat back is assembled to the car seat 40, and corresponding Velcro is provided below the car seat 40. This prevents wrinkles and warping of the facing layer of the seat back when the seat 40 is adjusted.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A lightweight, high-strength seat back panel, comprising an injection molded part, a hemp fiberboard, and a facing layer, wherein the facing layer is provided on the front side of the hemp fiberboard and the injection molded part is provided on the back side, characterized in that: The hemp fiberboard and the injection molded part are formed into an integrated structure through molding. The injection molded part has a skeleton structure. The surface finishing layer is made of artificial leather, and the surface finishing layer is glued to the hemp fiberboard. The hemp fiberboard has a double-layer structure, and a cavity is formed inside the double-layer structure of the hemp fiberboard.

2. The lightweight and high-strength seat backboard according to claim 1, characterized in that: The cross section of the skeleton structure formed by the injection molded part is triangular, and one corner of the triangle points to the outside of the hemp fiberboard.

3. The lightweight and high-strength seat backboard according to claim 1, characterized in that: The injection molded part is molded to have transverse reinforcing ribs and / or longitudinal reinforcing ribs.

4. The lightweight and high-strength seat backboard according to claim 1, characterized in that: The injection molded part is further provided with a connecting piece, and the connecting piece is provided with a limited position surface.

5. The lightweight and high-strength seat back panel according to claim 1, characterized in that: The injection molded part is further provided with a first assembly block, which is provided with a molding groove. The flax fiberboard is provided with a protrusion, which is adapted to the molding groove. The first assembly block is combined with the flax fiberboard through molding.

6. The lightweight and high-strength seat backboard according to claim 1, characterized in that: The injection molded part is further provided with a second assembly block, and the second assembly block is provided with a molding surface, and the molding surface is combined with the flax fiberboard through molding.

7. The lightweight and high-strength seat backboard according to claim 1, characterized in that: The flax fiberboard is further provided with a groove, and the groove limits the position of the injection molded part when the injection molded part is molded.

8. The lightweight and high-strength seat backboard according to claim 1, characterized in that: The surface finishing layer also extends a margin from the bottom of the hemp fiberboard, and the margin extended by the surface finishing layer is also provided with Velcro. The seat back panel is connected to the car seat, and a corresponding Velcro is provided under the car seat.

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