Spare tire cover plate

Abstract

The utility model discloses a spare tire cover plate, which comprises a polypropylene honeycomb layer, a polypropylene honeycomb layer, a first cover plate, a second cover plate and a third cover plate, wherein the thickness direction of the polypropylene honeycomb layer is a first direction; the first glass fiber composite layer is located on one side of the polypropylene honeycomb layer, the first glass fiber composite layer comprises a plurality of first glass fiber sub-layers impregnated with polypropylene, the extending direction of glass fibers in the first glass fiber sub-layers is perpendicular to the first direction, and the extending directions of the glass fibers in any two adjacent first glass fiber sub-layers are different; the second glass fiber composite layer is located on the side, away from the first glass fiber composite layer, of the polypropylene honeycomb layer, the second glass fiber composite layer comprises a plurality of second glass fiber sub-layers impregnated with polypropylene, and the extending direction of glass fibers in the second glass fiber sub-layers is perpendicular to the first direction; and the extension directions of the glass fibers in any two adjacent second glass fiber sub-layers are different. Therefore, the strength and rigidity of the spare tire cover plate can be obviously improved.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, and specifically, to a spare tire cover plate. Background Art

[0002] With the continuous increase in the functions of automobile parts, customers have put forward higher requirements for the strength of the spare tire cover plate in the automobile rear compartment. The existing spare tire cover plates usually use PHC (paper honeycomb) as the core material. In order to meet the high-strength requirements, it is necessary to increase the dosage of PU (polyurethane) material for filling, but this method has a high production cost and will also cause serious problems such as excessive VOC aldehyde substances in the product. The inside of the product is paper honeycomb, and it is extremely easy to be damaged when impacted by sharp objects.

[0003] Therefore, the current spare tire cover plates still need to be improved. Summary of the Utility Model

[0004] The utility model aims to alleviate or solve at least one of the above-mentioned problems to a certain extent.

[0005] In one aspect of the utility model, the utility model provides a spare tire cover plate. In some embodiments of the utility model, the spare tire cover plate includes: a polypropylene honeycomb layer, the thickness direction of the polypropylene honeycomb layer is the first direction; a first glass fiber composite layer, the first glass fiber composite layer is located on one side of the polypropylene honeycomb layer, the first glass fiber composite layer includes a plurality of first glass fiber sub-layers impregnated with polypropylene, the extending direction of the glass fibers in the first glass fiber sub-layers is perpendicular to the first direction, and the extending directions of the glass fibers in any two adjacent first glass fiber sub-layers are different; a second glass fiber composite layer, the second glass fiber composite layer is located on the side of the polypropylene honeycomb layer away from the first glass fiber composite layer, the second glass fiber composite layer includes a plurality of second glass fiber sub-layers impregnated with polypropylene, the extending direction of the glass fibers in the second glass fiber sub-layers is perpendicular to the first direction, and the extending directions of the glass fibers in any two adjacent second glass fiber sub-layers are different. Thus, by using the polypropylene honeycomb layer as the core material, the overall strength of the spare tire cover plate can be improved. By respectively arranging glass fiber sub-layers extending in different directions on both sides of the polypropylene honeycomb layer, the strength and stiffness of the spare tire cover plate can be significantly improved, and the glass fiber composite layer is not easily damaged by sharp objects.

[0006] In some embodiments of the utility model, in the first glass fiber composite layer, the included angle between the extending direction of the glass fibers in any one first glass fiber sub-layer and the extending direction of the glass fibers in the adjacent first glass fiber sub-layer is ≥45°. Thus, it is beneficial to further improve the strength and stiffness of the spare tire cover plate.

[0007] In some embodiments of the present utility model, in the second fiberglass composite layer, the included angle between the extending directions of the glass fibers in any one of the second fiberglass sub-layers and the extending directions of the glass fibers in the second fiberglass sub-layer adjacent thereto is ≥45°.

[0008] In some embodiments of the present utility model, the number of the first fiberglass sub-layers in the first fiberglass composite layer is 2, and the included angle between the extending directions of the glass fibers in the two first fiberglass sub-layers is 85° - 90°. When the included angle between the extending directions of the glass fibers in the two first fiberglass sub-layers is within the above range, it is beneficial to further improve the ability of the first fiberglass composite layer to resist damage by sharp objects, thereby further improving the service performance of the spare tire cover.

[0009] In some embodiments of the present utility model, the number of the second fiberglass sub-layers in the second fiberglass composite layer is 2, and the included angle between the extending directions of the glass fibers in the two second fiberglass sub-layers is 85° - 90°.

[0010] In some embodiments of the present utility model, the number of the first fiberglass sub-layers in the first fiberglass composite layer is 3, and the included angles between the extending direction of the glass fibers in the middle first fiberglass sub-layer and the extending directions of the glass fibers in the other two first fiberglass sub-layers are 85° - 90° and 40° - 50° respectively.

[0011] In some embodiments of the present utility model, the number of the second fiberglass sub-layers in the second fiberglass composite layer is 3, and the included angles between the extending direction of the glass fibers in the middle second fiberglass sub-layer and the extending directions of the glass fibers in the other two second fiberglass sub-layers are 85° - 90° and 40° - 50° respectively.

[0012] In some embodiments of the present utility model, the holes in the polypropylene honeycomb layer are circular holes.

[0013] In some embodiments of the present utility model, the spare tire cover further includes a decorative layer, and the decorative layer is located on the side of the first fiberglass composite layer away from the polypropylene honeycomb layer. Thus, the appearance of the spare tire cover can be improved, which is beneficial to enhancing the user experience.

[0014] In some embodiments of the present utility model, the decorative layer is a needle punched carpet, a non-woven fabric or a tufted carpet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0016] Figure 1 shows a schematic structural diagram of a spare tire cover according to an embodiment of the present utility model;

[0017] Figure 2 Shows a schematic structural view of a first fiberglass composite layer according to an embodiment of the present utility model;

[0018] Figure 3 Shows a schematic structural view of a second fiberglass composite layer according to an embodiment of the present utility model;

[0019] Figure 4 Shows a partial schematic structural view of a spare tire cover plate according to an embodiment of the present utility model;

[0020] Figure 5 Shows the included angle of the glass fibers in two adjacent first fiberglass sub - layers or second fiberglass sub - layers;

[0021] Figure 6 Shows a schematic structural view of a spare tire cover plate according to another embodiment of the present utility model.

[0022] Explanation of reference numerals:

[0023] 10: polypropylene honeycomb layer; 20: first fiberglass composite layer; 21: first fiberglass sub - layer; 30: second fiberglass composite layer; 31: second fiberglass sub - layer; 40: decorative layer; 1: polypropylene; 2: glass fiber. Detailed description of the specific implementation

[0024] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0025] In one aspect of the present utility model, the present utility model provides a spare tire cover plate. In some embodiments of the present utility model, referring to Figures 1 to 6 , the spare tire cover plate may include a polypropylene honeycomb layer 10, a first fiberglass composite layer 20, and a second fiberglass composite layer 30.

[0026] Define the thickness direction of the polypropylene honeycomb layer 10 as the first direction, such as the X direction shown in Figure 1 . Referring to Figure 1 , Figures 2 to 6 , the first fiberglass composite layer 20 is located on one side of the polypropylene honeycomb layer 10. Among them, the first fiberglass composite layer 20 may include a plurality of first fiberglass sub - layers 21 impregnated with polypropylene 1, and the extending direction of the glass fibers 2 in the first fiberglass sub - layer 21 is the same as the first direction (such as Figure 1perpendicular to the X direction shown in the figure, and the extending directions of the glass fibers 2 in any two adjacent first glass fiber sub-layers 21 are different. The different extending directions of the glass fibers 2 in any two adjacent first glass fiber sub-layers 21 can improve the stiffness of the first glass fiber composite layer, thereby improving the ability of the second glass fiber composite layer to resist damage by sharp objects.

[0027] In some embodiments of the present invention, referring to Figure 1 and Figure 6 , the first glass fiber composite layer 20 can be located on one surface of the polypropylene honeycomb layer 10.

[0028] It should be noted that due to reasons such as process accuracy, it may be difficult to ensure that the extending direction of the glass fibers 2 in the first glass fiber sub-layer 21 is perpendicular to the first direction. Therefore, it is sufficient that the extending direction of the glass fibers 2 in the first glass fiber sub-layer 21 is substantially perpendicular to the first direction. For example, the included angle between the extending direction of the glass fibers 2 in the first glass fiber sub-layer 21 and the first direction can be 90° ± 2°.

[0029] In some embodiments of the present invention, referring to Figure 1 , Figures 3 to 6 , the second glass fiber composite layer 30 is located on the side of the polypropylene honeycomb layer 10 away from the first glass fiber composite layer 20. The second glass fiber composite layer 30 may include a plurality of second glass fiber sub-layers 31 impregnated with polypropylene 1. The extending direction of the glass fibers 2 in the second glass fiber sub-layer 31 is perpendicular to the first direction (such as Figure 1 the X direction shown in the figure), and the extending directions of the glass fibers 2 in any two adjacent second glass fiber sub-layers 31 are different. Thus, it is beneficial to increase the stiffness of the second glass fiber composite layer, thereby improving the ability of the second glass fiber composite layer to resist damage by sharp objects. It should be noted that due to reasons such as process accuracy, it is sufficient that the extending direction of the glass fibers 2 in the second glass fiber sub-layer 31 is substantially perpendicular to the first direction.

[0030] In some embodiments of the present invention, referring to Figure 1 and Figure 6 , the first glass fiber composite layer 20 and the second glass fiber composite layer 30 can be disposed on two surfaces of the polypropylene honeycomb layer 10.

[0031] The glass fibers in the glass fiber felt commonly used in the spare tire cover are cut into segments with a size of about 5 cm. Multiple glass fiber segments are laid flat on a plane, and then the multiple segments are bonded into glass fiber felt by adhesive. Since the glass fiber felt is obtained by splicing multiple segments, it is very easy to be damaged when hit by a sharp object. Compared with glass fiber felt, in the utility model, the glass fibers 2 in each first glass fiber sublayer 21 or second glass fiber sublayer 23 are continuous fibers. Multiple glass fibers in the same glass fiber sublayer extend in the same direction, and then a glass fiber sublayer is formed by impregnation with polypropylene (polypropylene is melted and impregnated to form an integrated structure with continuous glass fibers). After that, the adjacent first glass fiber sublayer and / or second glass fiber sublayer are stacked on the polypropylene honeycomb layer at different angles (extending angles of glass fibers), and the first glass fiber composite layer and the second glass fiber composite layer are formed by heating, and the first glass fiber composite layer and the second glass fiber composite layer are firmly combined with the polypropylene honeycomb layer.

[0032] Compared with the paper honeycomb core material commonly used in the spare tire cover, the polypropylene honeycomb layer 10 has higher strength, which can improve the overall strength of the spare tire cover; a glass fiber composite layer formed by stacking multiple glass fiber sub-layers impregnated with polypropylene (the extension directions of the glass fibers in two adjacent glass fiber sub-layers are different) is arranged on both sides of the polypropylene honeycomb layer, which can improve the rigidity of the spare tire cover and make the spare tire cover less likely to be damaged by sharp objects. In addition, it can also further improve the overall strength of the spare tire cover.

[0033] In this article, "stiffness" refers to the ability of a material or structure to resist elastic deformation when subjected to force, which reflects the ability of a material or structure to return to its original state after being subjected to force. "Strength" refers to the ability of a material or structure to withstand the maximum stress under load without being damaged. It focuses on the size of the load. Exceeding the strength limit of the material will lead to material failure.

[0034] In some embodiments of the present invention, reference Figure 2 , Figure 4 and Figure 5 In the first glass fiber composite layer 20, the angle between the extension direction of the glass fibers 2 in any first glass fiber sub-layer 21 and the extension direction of the glass fibers 2 in the adjacent first glass fiber sub-layer 21 is ≥ 45°. Therefore, the angle between the extension directions of the glass fibers in any two adjacent first glass fiber sub-layers is large, which is beneficial to further improve the strength and rigidity of the first glass fiber composite layer, thereby further improving the overall strength of the spare tire cover and the ability to resist damage from sharp objects.

[0035] refer to Figure 5 Herein, the angle α between the extension directions of the glass fibers 2 in two adjacent first glass fiber sub-layers 21 or two adjacent second glass fiber sub-layers 31 refers to an acute angle or a right angle.

[0036] In some embodiments of the present utility model, referring to Figures 3 to 5 , in the second fiberglass composite layer 30, the included angle between the extending directions of the glass fibers 2 in any one of the second fiberglass sub-layers 31 and the extending directions of the glass fibers 2 in the adjacent second fiberglass sub-layer 31 is ≥ 45°. Thus, it is beneficial to further improve the strength and stiffness of the second fiberglass composite layer, and thereby beneficial to further improve the overall strength of the spare tire cover and the ability to resist damage by sharp objects.

[0037] In some embodiments of the present utility model, referring to Figure 2 , the number of the first fiberglass sub-layers 21 in the first fiberglass composite layer 20 can be 2, and the included angle between the extending directions of the glass fibers 2 in the two first fiberglass sub-layers 21 can be 85° - 90°. For example, the included angle between the extending directions of the glass fibers 2 in the two first fiberglass sub-layers 21 can be 85°, 86°, 87°, 88°, 89° or 90°. Thus, there is a relatively large included angle between the extending directions of the glass fibers 2 in the two first fiberglass sub-layers 21, which can better resist sharp objects, thereby avoiding damage to the spare tire cover by sharp objects.

[0038] In some embodiments of the present utility model, referring to Figure 3 , the number of the second fiberglass sub-layers 31 in the second fiberglass composite layer 30 can be 2, and the included angle between the extending directions of the glass fibers 2 in the two second fiberglass sub-layers 31 can be 85° - 90°. For example, the included angle between the extending directions of the glass fibers 2 in the two second fiberglass sub-layers 31 can be 85°, 86°, 87°, 88°, 89° or 90°. Thus, there is a relatively large included angle between the extending directions of the glass fibers 2 in the two second fiberglass sub-layers 31, which can better resist sharp objects, thereby avoiding damage to the spare tire cover by sharp objects.

[0039] In some specific embodiments of the present utility model, referring to Figures 1 to 3 , the number of the first fiberglass sub-layers 21 in the first fiberglass composite layer 20 can be 2, and the included angle between the extending directions of the glass fibers 2 in the two first fiberglass sub-layers 21 can be 85° - 90°. And the number of the second fiberglass sub-layers 31 in the second fiberglass composite layer 30 can be 2, and the included angle between the extending directions of the glass fibers 2 in the two second fiberglass sub-layers 31 can be 85° - 90°.

[0040] In some embodiments of the present utility model, referring to Figure 4, the number of the first glass fiber sub-layers 21 in the first glass fiber composite layer 20 can be 3. The included angles between the extending directions of the glass fibers 2 in the middle first glass fiber sub-layer 21 and the extending directions of the glass fibers 2 in the other two first glass fiber sub-layers 21 are 85° - 90° (for example, 85°, 86°, 87°, 88°, 89° or 90°) and 40° - 50° (for example, 40°, 42°, 43°, 46°, 47°, 49° or 50°) respectively. When the included angles between the extending directions of the glass fibers 2 in the three first glass fiber sub-layers 21 in the first glass fiber composite layer 20 satisfy the above conditions, the strength and stiffness of the first glass fiber composite layer can be further improved, so that it can better resist sharp objects and avoid damage to the spare tire cover by sharp objects.

[0041] In a specific embodiment of the present invention, referring to Figure 4 , the number of the first glass fiber sub-layers 21 in the first glass fiber composite layer 20 can be 3. The glass fibers in the first glass fiber sub-layer farthest from the polypropylene honeycomb layer extend along the 0° direction, the glass fibers in the first glass fiber sub-layer adjacent to it extend along the 90° direction, and the glass fibers in the first glass fiber sub-layer closest to the polypropylene honeycomb layer extend along the 45° direction.

[0042] In some embodiments of the present invention, referring to Figure 4 , the number of the second glass fiber sub-layers 31 in the second glass fiber composite layer 30 can be 3. The included angles between the extending directions of the glass fibers 2 in the middle second glass fiber sub-layer 31 and the extending directions of the glass fibers 2 in the other two second glass fiber sub-layers 31 are 85° - 90° (for example, 85°, 86°, 87°, 88°, 89° or 90°) and 40° - 50° (for example, 40°, 42°, 43°, 46°, 47°, 49° or 50°) respectively. Thereby, the strength and stiffness of the second glass fiber composite layer can be further improved, and thus the ability of the spare tire cover to resist damage by sharp objects can be further improved.

[0043] In a specific embodiment of the present invention, referring to Figure 4, the number of the first glass fiber sub-layers 21 in the first glass fiber composite layer 20 can be 3. The glass fibers in the first glass fiber sub-layer farthest from the polypropylene honeycomb layer extend along the 0° direction, the glass fibers in the first glass fiber sub-layer adjacent to it extend along the 90° direction, and the glass fibers in the first glass fiber sub-layer closest to the polypropylene honeycomb layer extend along the 45° direction. The number of the second glass fiber sub-layers 31 in the second glass fiber composite layer 30 can be 3. The glass fibers in the second glass fiber sub-layer farthest from the polypropylene honeycomb layer extend along the 0° direction, the glass fibers in the second glass fiber sub-layer adjacent to it extend along the 90° direction, and the glass fibers in the second glass fiber sub-layer closest to the polypropylene honeycomb layer extend along the -45° direction (perpendicular to the extending direction of the glass fibers in the first glass fiber sub-layer closest to the polypropylene honeycomb layer). Thus, the overall strength and stiffness of the spare tire cover can be further improved.

[0044] It should be noted that the number of the first glass fiber sub-layers in the first glass fiber composite layer and the number of the second glass fiber sub-layers in the second glass fiber composite layer can be the same or different, and the specific number can be adjusted according to actual requirements.

[0045] In some embodiments of the present invention, the holes in the polypropylene honeycomb layer 10 can be circular holes.

[0046] In some embodiments of the present invention, referring to Figure 6 , the spare tire cover may further include a decorative layer 40, and the decorative layer 40 can be located on the side of the first glass fiber composite layer 20 away from the polypropylene honeycomb layer 10. In some embodiments of the present invention, the decorative layer 40 can be a needle punched carpet, a non-woven fabric or a tufted carpet.

[0047] Generally speaking, in the present invention, using the polypropylene honeycomb layer as the core material can at least to a certain extent improve the overall strength of the spare tire cover; by respectively arranging glass fiber composite layers formed by laminating multi-angle continuous glass fibers on both sides of the core material, the overall strength of the spare tire cover can be further improved, and the surface stiffness of the spare tire cover can be increased, so that sharp objects cannot damage the product surface layer; the spare tire cover of the present invention can adopt a production process of composite + edge wrapping + assembly. During the preparation process, canceling the PU material spraying can reduce the production cost of the product, improve the on-site operation environment, and the VOC aldehyde substances in the prepared spare tire cover product can be reduced by about 80%.

[0048] In the description of the present invention, the orientation or positional relationship indicated by terms such as "the first direction" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention.

[0049] In the description of this specification, the descriptions referring to terms such as "one embodiment", "another embodiment", "some embodiments", "a specific embodiment", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment are included in at least one embodiment of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Additionally, it should be noted that in this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In this specification, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0050] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A spare tire cover, characterized in that: include: A polypropylene honeycomb layer, wherein the thickness direction of the polypropylene honeycomb layer is a first direction; a first glass fiber composite layer, the first glass fiber composite layer is located on one side of the polypropylene honeycomb layer, the first glass fiber composite layer includes a plurality of first glass fiber sub-layers impregnated with polypropylene, the extension direction of the glass fibers in the first glass fiber sub-layer is perpendicular to the first direction, the extension directions of the glass fibers in any two adjacent first glass fiber sub-layers are different, the number of the first glass fiber sub-layers in the first glass fiber composite layer is 3, the angle between the extension direction of the glass fibers in the first glass fiber sub-layer farthest from the polypropylene honeycomb layer and the glass fibers in the middle first glass fiber sub-layer is 85°-90°, and the angle between the extension direction of the glass fibers in the first glass fiber sub-layer closest to the polypropylene honeycomb layer and the extension direction of the glass fibers in the middle first glass fiber sub-layer is 40°-50°; a second glass fiber composite layer, the second glass fiber composite layer is located on a side of the polypropylene honeycomb layer away from the first glass fiber composite layer, the second glass fiber composite layer includes a plurality of second glass fiber sublayers impregnated with polypropylene, the extension direction of the glass fibers in the second glass fiber sublayers is perpendicular to the first direction, the extension directions of the glass fibers in any two adjacent second glass fiber sublayers are different, the number of the second glass fiber sublayers in the second glass fiber composite layer is 3, the angle between the extension direction of the glass fibers in the second glass fiber sublayer farthest from the polypropylene honeycomb layer and the glass fibers in the middle second glass fiber sublayer is 85°-90°, and the angle between the extension direction of the glass fibers in the second glass fiber sublayer closest to the polypropylene honeycomb layer and the extension direction of the glass fibers in the middle second glass fiber sublayer is 40°-50°; An extending direction of glass fibers in the second glass fiber sub-layer closest to the polypropylene honeycomb layer is perpendicular to an extending direction of glass fibers in the first glass fiber sub-layer closest to the polypropylene honeycomb layer.

2. The spare tire cover according to claim 1, characterized in that: The holes in the polypropylene honeycomb layer are circular holes.

3. The spare tire cover according to claim 1, characterized in that: It also includes a decorative layer, which is located on a side of the first glass fiber composite layer away from the polypropylene honeycomb layer.

4. The spare tire cover according to claim 3, characterized in that: The decorative layer is a needle-punched carpet, a non-woven fabric or a tufted carpet.

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