Heat insulation pad, engine cover assembly and automobile

Abstract

The utility model relates to a heat insulation pad, an engine cover assembly and an automobile. The heat insulation pad comprises a first covering layer, a polypropylene glass fiber felt and a second covering layer which are stacked in sequence, the heat insulation pad has a main body area, an edge area and a reinforcing area. The edge area surrounds the main body area and the reinforcing area; the part of the heat insulation pad in the edge area is thinner than the part of the heat insulation pad in the main body area; the reinforcing area divides the main body area, and the part of the heat insulation pad in the reinforcing area is thinner than the part of the heat insulation pad in the main body area. The installation space occupied by the heat insulation pad is small.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile accessories, and in particular to a heat insulation pad, an engine cover assembly and an automobile. Background Art

[0002] Usually there is a heat insulation pad on the inside of the engine cover.

[0003] Common insulation pads are made of lightweight polyurethane and other materials. However, since polyurethane is relatively soft, in order to ensure the stability of the insulation pad, the thickness is usually 20mm or more.

[0004] An insulation pad that is too thick will encroach on the cabin space or be detrimental to increasing the crumple space of the hood sheet metal. Utility Model Content

[0005] An embodiment of the present disclosure provides a thermal insulation pad, which includes a first covering layer, a polypropylene glass fiber felt and a second covering layer stacked in sequence; the thermal insulation pad has a main body area, an edge area and a reinforcement area; the edge area surrounds the main body area and the reinforcement area, and the portion of the thermal insulation pad in the edge area is thinner than the portion of the thermal insulation pad in the main body area; the reinforcement area divides the main body area, and the portion of the thermal insulation pad in the reinforcement area is thinner than the portion of the thermal insulation pad in the main body area.

[0006] By providing a first covering layer, a polypropylene glass fiber felt, and a second covering layer stacked in sequence, sufficient heat insulation capacity can be achieved with a relatively thin size and a certain structural strength; by configuring the thickness in the edge area and the reinforcement area to be different from that in the main area, the rigidity is ensured by the structural change and the stacked structure including the polypropylene glass fiber felt. The heat insulation pad of the embodiment of the present disclosure occupies a small installation space.

[0007] In some embodiments, the thickness of the polypropylene glass fiber felt is greater than the thickness of the first covering layer, and the thickness of the polypropylene glass fiber felt is greater than the thickness of the second covering layer; the thickness of the insulation pad in the main area is 4mm to 7mm; the thickness of the insulation pad in the edge area is 2mm to 3mm.

[0008] With such arrangement, the thickness of the polypropylene glass fiber felt is greater and can be used as the base material of the thermal insulation pad, so that the covering layers on both sides have a bonding basis; the portion of the thermal insulation pad in the edge area can achieve edge sealing for the portion in the main area.

[0009] In some embodiments, the portion of the thermal insulation pad in the edge area is pressed, and the portion of the thermal insulation pad in the reinforcement area is pressed; the portion of the thermal insulation pad in the edge area is thinner than the portion of the thermal insulation pad in the reinforcement area.

[0010] Such an arrangement can effectively strengthen the structure of the thermal insulation pad in the reinforcement area and the edge area, and ensure the structural rigidity of the thermal insulation pad.

[0011] In some embodiments, the thermal insulation mat has a plurality of reinforcement grooves in the reinforcement area.

[0012] Such an arrangement can ensure the rigidity of the entire thermal insulation pad.

[0013] Exemplarily, at least two reinforcement grooves among the plurality of reinforcement grooves form a cross-type reinforcement structure.

[0014] Such a setting can effectively separate the main area and help improve the rigidity of the thermal insulation pad.

[0015] Exemplarily, the plurality of reinforcement grooves include a first reinforcement groove and a second reinforcement groove, and the first reinforcement groove and the second reinforcement groove form a cross-shaped reinforcement structure located at the center of the thermal insulation pad.

[0016] With such arrangement, the structure of the thermal insulation pad is more balanced.

[0017] In some embodiments, the second cover layer has a plurality of reinforced grooves pressed in the reinforced area; and the grammage of the first cover layer is greater than the grammage of the second cover layer.

[0018] With such arrangement, the second covering layer can be used as the back surface for matching, and the first covering layer can be used as the exposed front surface; the surface of the first covering layer is more dense.

[0019] In some embodiments, the first cover layer is a needle-punched, rubber-impregnated nonwoven fabric.

[0020] In this way, the needle-punched rubber-impregnated nonwoven fabric can improve the wrinkle problem of the appearance and reduce the floating fiber problem. In addition, the surface of the first covering layer can be harder than the surface of the second covering layer.

[0021] Exemplarily, the first covering layer is a first non-woven fabric layer, and the second covering layer is a second non-woven fabric layer.

[0022] With such arrangement, the nonwoven fabric layer is easy to be combined and has a good surface condition.

[0023] In some embodiments, the polypropylene glass fiber mat has a gram weight greater than 950 g / m 2 ; The first non-woven fabric layer has a grammage of 90g / m 2 Up to 120g / m 2 The second non-woven fabric layer has a grammage of 60g / m 2 Up to 100g / m 2 .

[0024] Such a configuration is conducive to the manufacturing and molding of the thermal insulation pad; it can have a sufficient thermal insulation effect and achieve a thinner structure.

[0025] In some embodiments, the weight of the thermal insulation pad is 1100 g / m 2 Up to 1400g / m 2When the thickness of the thermal insulation pad in the reinforced area is 2 mm to 3 mm.

[0026] In some embodiments, the weight of the thermal insulation pad is 1400 g / m 2 Up to 1800g / m 2 When the thickness of the thermal insulation pad in the reinforced area is 3 mm to 4 mm.

[0027] In some embodiments, the weight of the thermal insulation mat is greater than or equal to 1800 g / m 2 When the thickness of the thermal insulation pad in the reinforced area is 4 mm to 5 mm.

[0028] With such an arrangement, a suitable thickness can be configured at the reinforced area according to the gram weight of the thermal insulation pad, thereby ensuring structural strength and rigidity and facilitating manufacturing.

[0029] In some embodiments, connection holes are provided in the edge region and / or the reinforcement region.

[0030] Such an arrangement makes it easier to install the thermal insulation pad to the external structure and enables a reliable connection.

[0031] Exemplarily, the first non-woven fabric layer, the polypropylene glass fiber felt and the second non-woven fabric layer are directly combined in sequence.

[0032] With such arrangement, the heat insulation pad has a simple structure and good strength.

[0033] Exemplarily, the thermal insulation pad is composed of a first non-woven fabric layer, a polypropylene glass fiber felt and a second non-woven fabric layer.

[0034] With this arrangement, the thickness of the thermal insulation pad is thin.

[0035] The disclosed embodiment also provides an engine hood assembly, which includes: a hood sheet metal; and the aforementioned thermal insulation pad, which is stacked on the hood sheet metal.

[0036] The engine hood assembly provided by the embodiments of the present disclosure can be heat-insulated and can have a smaller thickness, or the hood sheet metal can have a larger collapse space.

[0037] The disclosed embodiment also provides a car, which includes the aforementioned engine hood assembly.

[0038] The automobile according to the embodiment of the present disclosure may have a larger cabin space. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic front view of a thermal insulation pad according to an embodiment of the present disclosure;

[0040] Figure 2 is a schematic bottom view of a thermal insulation pad according to an embodiment of the present disclosure;

[0041] Figure 3 is a schematic top view of a thermal insulation pad according to an embodiment of the present disclosure;

[0042] Figure 4 for Figure 3 A schematic cross-sectional view at AA in the middle;

[0043] Figure 5 It is a schematic structural diagram of a thermal insulation pad according to an embodiment of the present disclosure;

[0044] Figure 6 It is a schematic structural diagram of an engine hood assembly in a car according to an embodiment of the present disclosure.

[0045] Description of reference numerals: 1, first covering layer; 11, first cloth block; 12, second cloth block; 13, third cloth block; 2, polypropylene fiberglass felt; 21, first felt block; 22, second felt block; 23, third felt block; 3, second covering layer; 31, fourth cloth block; 32, fifth cloth block; 33, sixth cloth block;

[0046] 100. thermal insulation pad; 110. reinforcement groove; 111. first reinforcement groove; 112. second reinforcement groove; 120. connection hole; 130. main structure; 140. edge structure; 150. reinforcement structure; 200. engine cover assembly; 210. engine cover sheet metal; 300. automobile. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present disclosure more obvious and understandable, the specific implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present disclosure. However, the embodiments of the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the embodiments of the present disclosure, so the embodiments of the present disclosure are not limited by the specific examples of the embodiments disclosed below.

[0048] In the description of the embodiments of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present disclosure.

[0049] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. Exemplarily, the first reinforcement groove may also be referred to as the second reinforcement groove, and the second reinforcement groove may also be referred to as the first reinforcement groove. In the description of the embodiments of the present disclosure, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a flexible connection, or a rigid connection along at least one direction; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or directly connected with the presence of an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. The terms "installed", "set", "fixed", etc. can be broadly understood as connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0052] As used herein, the terms "layer" and "region" refer to a portion of a material that includes an area with a certain thickness. A layer can extend horizontally, vertically and / or along a tapered surface. A layer can be an area of ​​a uniform or non-uniform continuous structure, and its thickness perpendicular to the extension direction may not be greater than the thickness of the continuous structure. A layer can include multiple layers, which can be stacked layers or multiple layers extending discretely. The shapes of various regions and layers in the drawings and their relative sizes and positional relationships are only exemplary, and may actually deviate due to manufacturing tolerances or technical limitations, and the design can be adjusted according to actual needs.

[0053] refer to Figures 1 to 5 , Figure 1 The heat insulation pad in the embodiment of the present disclosure is shown. Figures 2 to 5As shown, the thermal insulation pad 100 provided in the embodiment of the present disclosure includes: a first covering layer 1, a polypropylene glass fiber felt 2 and a second covering layer 3. The first covering layer 1, the polypropylene glass fiber felt 2 and the second covering layer 3 are stacked in sequence. The thermal insulation pad 100 may have a curvature as a whole, and local deflection or deformation.

[0054] like Figures 3 to 5 As shown, the thermal insulation pad 100 is divided into multiple regions, such as the α region, the β region and the γ region, and the structure of the thermal insulation pad 100 in different regions may vary. Exemplarily, the thermal insulation pad 100 has a main region, namely the α region, an edge region, namely the β region and a reinforcement region, namely the γ region. The multiple regions of the thermal insulation pad 100 can be divided along the extension surface of the polypropylene glass fiber felt 2 or the extension surface of the first covering layer 1.

[0055] refer to Figure 3 The edge region surrounds the main region and the reinforcement region, and the reinforcement region divides the main region. The reinforcement region can be connected to the edge region. In other embodiments, the size of the reinforcement region in the X-axis direction or the Y-axis direction is greater than 80% of the size of the main region.

[0056] refer to Figure 4 and Figure 5 The thermal insulation pad 100 includes a first covering layer 1, a polypropylene glass fiber felt 2, and a second covering layer 3 stacked in sequence, and the local structure of the thermal insulation pad 100 in each region also includes multiple components stacked in sequence. The portion of the thermal insulation pad 100 in the main region is the main structure 130, the portion of the thermal insulation pad 100 in the edge region is the edge structure 140, and the portion of the thermal insulation pad 100 in the reinforcement region is the reinforcement structure 150.

[0057] For example, the first covering layer 1 and the second covering layer 3 are non-woven fabric layers, respectively. The first covering layer 1 can be referred to as a first non-woven fabric layer, and the second covering layer 3 can be referred to as a second non-woven fabric layer. The non-woven fabric layer can be a needle-punched non-woven fabric or a spunlace non-woven fabric; the non-woven fabric layer can be a dipped non-woven fabric.

[0058] refer to Figure 5 The first covering layer 1 includes a first cloth block 11 in the main body area, a second cloth block 12 in the edge area, and a third cloth block 13 in the reinforcement area. The polypropylene glass fiber mat 2 includes a first cloth block 21 in the main body area, a second cloth block 22 in the edge area, and a third cloth block 23 in the reinforcement area. The second covering layer 3 includes a fourth cloth block 31 in the main body area, a fifth cloth block 32 in the edge area, and a sixth cloth block 33 in the reinforcement area.

[0059] The main structure 130 includes a first cloth block 11, a first felt block 21 and a fourth cloth block 31 which are stacked in sequence. Figure 3 , it can be considered that the main area is divided into multiple sub-areas by the reinforcement area; it can also be considered that the thermal insulation pad 100 has multiple main areas.

[0060] The portion of the thermal insulation pad 100 in the edge area is thinner than the portion of the thermal insulation pad 100 in the main area. Exemplarily, the density of the edge structure 140 is greater than the density of the main structure 130, and the hardness of the edge structure 140 is greater than the hardness of the main structure 130. The edge structure 140 includes a second cloth block 12, a second felt block 22, and a fifth cloth block 32 stacked in sequence.

[0061] The portion of the thermal insulation pad 100 in the reinforcement area is pressed and is thinner than the portion of the thermal insulation pad 100 in the main area. Exemplarily, the density of the reinforcement structure 150 is greater than the density of the main structure 130, and the hardness of the reinforcement structure 150 is greater than the hardness of the main structure 130. The reinforcement structure 150 includes a third cloth block 13, a third felt block 23, and a sixth cloth block 33 stacked in sequence. Exemplarily, the edge structure 140 is thinner than the reinforcement structure 150.

[0062] By providing the first covering layer 1, the polypropylene glass fiber felt 2 and the second covering layer 3 stacked in sequence, sufficient heat insulation capacity can be achieved with a relatively thin size and a certain structural strength. The heat insulation pad 100 of the embodiment of the present disclosure occupies a small installation space.

[0063] By configuring the edge structure 140 and the reinforcement structure 150 to be thinner than the main structure 130 , the rigidity is ensured by the structural changes and the stacked structure including the polypropylene glass fiber mat 2 .

[0064] In some embodiments, the edge area of ​​the thermal insulation pad 100 is pressed, and the reinforcement area of ​​the thermal insulation pad 100 is pressed. In other words, the edge structure 140 is a pressed part, and the reinforcement structure 150 is a pressed part. The pressed parts are arranged in the edge area and the reinforcement area to ensure the structural rigidity of the thermal insulation pad 100.

[0065] Exemplarily, the portion of the thermal insulation pad 100 in the edge area is thinner than the portion of the thermal insulation pad 100 in the reinforcement area. The edge structure 140 realizes edge sealing; while the reinforcement structure 150 creates a thickness difference with the main structure 130, it ensures its own thickness.

[0066] For example, the first covering layer 1, the polypropylene glass fiber felt 2 and the second covering layer 3 are directly combined in sequence, and the thermal insulation pad 100 has a simple structure and good strength. For example, the first covering layer 1 or the second covering layer 3 includes needle-punched non-woven fabric and infiltrated glue; in other embodiments, both sides of the polypropylene glass fiber felt 2 can be regarded as having a glue layer.

[0067] In some optional embodiments, a thinner layer, such as a colored layer, may be provided on the surface of the first covering layer 1 or the second covering layer 3. In other embodiments, a porous mesh may be provided on both sides of the polypropylene glass fiber mat 2, and the polypropylene glass fiber mat 2 can still be directly combined with the first covering layer 1 or the second covering layer 3.

[0068] In an exemplary embodiment, the thermal insulation pad 100 is composed of a first covering layer 1, a polypropylene glass fiber felt 2, and a second covering layer 3. The thermal insulation pad 100 is composed of only three layers, has a simple structure, sufficient strength, and is thin.

[0069] In some embodiments, the thermal insulation pad 100 has a plurality of reinforcement grooves 110 in the reinforcement area. Exemplarily, the width of the reinforcement groove 110 is 40 mm to 60 mm. The reinforcement groove 110 can be pressed. In some embodiments, the layers are pressed to obtain the reinforcement grooves 110. In other embodiments, some stacked structures are pressed and then stacked to obtain the thermal insulation pad 100. The plurality of reinforcement grooves 110 can be parallel or skewed to each other.

[0070] Exemplarily, at least two of the multiple reinforcement grooves 110 form a cross-type reinforcement structure. There may be two reinforcement grooves 110 crossing, or more reinforcement grooves 110 crossing. The two reinforcement grooves 110 may be X-shaped crossings, such as cross-shaped crossings; the two reinforcement grooves 110 may be V-shaped crossings or T-shaped crossings; the multiple reinforcement grooves 110 may also be formed with Y-shaped crossings, *-shaped crossings, or rice-shaped crossings, etc. The main area around the intersection is separated, and the strength of the thermal insulation pad 100 is improved to a certain extent. The cross-type reinforcement structure may be located at the center of the thermal insulation pad 100.

[0071] Two reinforcement grooves 110 among the plurality of reinforcement grooves 110 are used to form a cross-type reinforcement structure located at the center of the thermal insulation pad 100, which can effectively ensure the rigidity of the entire thermal insulation pad 100. In addition, the structure of the thermal insulation pad 100 is relatively balanced.

[0072] Exemplarily, the plurality of reinforcement grooves 110 of the thermal insulation pad 100 include a first reinforcement groove 111 and a second reinforcement groove 112, and the extension direction of the first reinforcement groove 111 and the extension direction of the second reinforcement groove 112 may intersect, for example, be perpendicular. Figure 3 As shown, the first reinforcement groove 111 may extend approximately along the Y-axis direction, and the second reinforcement groove 112 may extend approximately along a direction perpendicular to the Y-axis direction. The first reinforcement groove 111 and the second reinforcement groove 112 are used to form a cross-type reinforcement structure. The cross-type reinforcement structure has a simple and balanced structure and is easy to press. The thermal insulation pad 100 has good rigidity and good thermal insulation. The cross-type reinforcement structure is located at the center of the thermal insulation pad 100. For example, the intersection of the first reinforcement groove 111 and the second reinforcement groove 112 may be located at the center of the thermal insulation pad 100.

[0073] The plurality of reinforcement grooves 110 may form a plurality of cross-shaped reinforcement structures, such as Figure 3As shown, three cross-type reinforcement structures can be formed. The three cross-type reinforcement structures are arranged along the Y-axis direction, and it can be considered that three first reinforcement grooves 111 are provided, or that the first reinforcement grooves 111 are longer. The three cross-type reinforcement structures are evenly distributed. Other numbers of cross-type reinforcement structures can also be formed, or multiple types of cross-type reinforcement structures can be provided at the same time.

[0074] The thermal insulation pad 100 may have a length direction and a width direction, such as Figure 3 As shown, the dimension of the thermal insulation pad 100 along the Y-axis direction is greater than the dimension of the thermal insulation pad 100 along the X-axis direction. A first reinforcement groove 111 may be provided, and both ends of the first reinforcement groove 111 extend to the edge area respectively. A plurality of second reinforcement grooves 112 may be provided at intervals along the Y-axis direction, for example, three, and each second reinforcement groove 112 may be provided perpendicular to the first reinforcement groove 111. Both ends of the second reinforcement groove 112 may extend to the edge area. Exemplarily, the width of the reinforcement groove 110 is 40 mm to 60 mm.

[0075] In some embodiments, the thickness of the polypropylene glass fiber felt 2 is greater than the thickness of the first covering layer 1, and the thickness of the polypropylene glass fiber felt 2 is greater than the thickness of the second covering layer 3. The thickness of the polypropylene glass fiber felt 2 is greater and can serve as the base material of the thermal insulation pad 100, so that the covering layers on both sides have a bonding basis.

[0076] The thickness of the thermal insulation pad 100 in the main body area of ​​the disclosed embodiment is 4 mm to 7 mm, which can match the external components, achieve a small installation space, and ensure the requirements of the protection test. The thermal insulation pad 100 can be composed of only three layers, for example, to achieve a thickness of 5 mm or less, and achieve a very thin effect while ensuring stability.

[0077] For example, the thickness of the edge area of ​​the thermal insulation pad 100 is 2 mm to 3 mm, and the edge area of ​​the thermal insulation pad 100 can achieve edge sealing for the portion in the main area. The edge structure 140 is thinner than the main structure 130, which ensures the connection strength of each layer and avoids problems such as delamination and separation; it also helps to ensure the structural strength of the thermal insulation pad 100.

[0078] In some embodiments, the second cover layer 3 has a plurality of reinforcement grooves 110 at the reinforcement area, and the second cover layer 3 can be used as the back side for matching, and the first cover layer 1 can be used as the front side for external exposure. At least one of the plurality of reinforcement grooves 110, the polypropylene glass fiber felt 2 and the first cover layer 1 can also collapse and deform due to pressing. Exemplarily, the reinforcement grooves 110 in the thermal insulation pad 100 are not thinned by removing material.

[0079] In some embodiments, the first covering layer 1 is a needle-punched nonwoven fabric, which can improve the wrinkle problem of the appearance and reduce the floating fiber problem. In addition, the surface of the first covering layer 1 can be harder than the surface of the second covering layer 3.

[0080] For example, when the first covering layer 1 is used as the front side of the thermal insulation pad 100, the gram weight of the first covering layer 1 is greater than the gram weight of the second covering layer 3, and the surface of the first covering layer 1 is denser. The gram weight of the second covering layer 3 is low, and the cost will be lower.

[0081] In some embodiments, the first nonwoven fabric layer has a grammage of 90 g / m 2 Up to 120g / m 2 The second non-woven fabric layer has a grammage of 60g / m 2 Up to 100g / m 2 , can have sufficient heat insulation effect and realize a thinner structure. For example, the gram weight of the first non-woven fabric layer is 90g / m 2 The second non-woven fabric layer has a grammage of 60g / m 2 .

[0082] For example, the weight of the polypropylene glass fiber felt 2 is greater than 950 g / m 2 , which is beneficial to the manufacturing and forming of the thermal insulation pad 100.

[0083] In some embodiments, the weight of the thermal insulation pad 100 is 1100 g / m 2 Up to 1400g / m 2 The thickness of the thermal insulation pad 100 in the reinforcement area is 2 mm to 3 mm. The weight of the thermal insulation pad 100 is 1400 g / m 2 Up to 1800g / m 2 When the thickness of the thermal insulation pad 100 in the reinforcement area is 3 mm to 4 mm, the weight of the thermal insulation pad 100 is greater than or equal to 1800 g / m 2 When the thickness of the heat insulation pad 100 in the reinforcement area is 4 mm to 5 mm, the heat insulation pad 100 can be configured with a suitable thickness in the reinforcement area according to the gram weight of the heat insulation pad 100, thereby ensuring structural strength and rigidity and facilitating manufacturing.

[0084] For example, the smaller the weight of the thermal insulation pad 100, the thinner the thickness of the reinforcing structure 150. For example, the weight of the thermal insulation pad 100 is 1400 g / m 2 In some other embodiments, the weight of the thermal insulation pad 100 is 1100 g / m 2 When the thickness of the reinforcing structure 150 is 3 mm, the reinforcing structure 150 may be thicker than the edge structure 140. For example, the edge structure 140 may be deflected relative to the main structure 130.

[0085] In some embodiments, the weight of the thermal insulation pad 100 is 1100 g / m 2 Up to 1800g / m 2 When the thickness of the edge area of ​​the thermal insulation pad 100 is 2 mm to 2.5 mm, the lighter the weight of the thermal insulation pad 100, the thinner the pressed edge structure 140, and the easier it is to press while achieving edge sealing. For example, the weight of the thermal insulation pad 100 is greater than 1800 g / m 2 When the thickness of the edge structure 140 is less than 2.2 mm, the thickness of the edge structure 140 can also be configured to be less than 2.2 mm. For example, the thickness of the edge area of ​​the thermal insulation pad 100 is 2 mm, and the layers of the edge structure 140 in the thermal insulation pad 100 are firmly and tightly connected to ensure the best edge sealing effect, not easy to loosen, protect the polypropylene glass fiber felt 2, and also help to strengthen the strength of the thermal insulation pad 100.

[0086] In some embodiments, connection holes 120 are provided in the edge area and / or the reinforcement area to facilitate the installation of the thermal insulation pad 100 to the external structure and achieve reliable connection. The connection holes 120 in the reinforcement area can be provided at the intersection of the cross-type reinforcement structure, so that effective connection can be achieved with fewer connection holes 120. Figure 3 As shown, the reinforcement area is provided with three connection holes 120, and the three connection holes 120 are arranged along the Y-axis direction. The thermal insulation pad 100 has good rigidity, good strength, stable connection, and is relatively simple and easy to manufacture.

[0087] refer to Figure 6 The disclosed embodiment also provides an engine hood assembly 200, which includes: an engine hood sheet metal 210 and the aforementioned thermal insulation pad 100. The thermal insulation pad 100 is stacked on the engine hood sheet metal 210, and illustratively, the bending shapes of the two can be similar.

[0088] The engine hood assembly 200 provided in the embodiment of the present disclosure can be heat-insulated and can have a smaller thickness, or the hood sheet metal 210 can have a larger collapse space.

[0089] Exemplarily, the second covering layer 3 of the thermal insulation pad 100 faces the hood sheet metal 210 , and the first covering layer 1 faces away from the hood sheet metal 210 , and can be seen when the engine hood assembly 200 is opened.

[0090] For example, the heat insulation pad 100 can be fixed to the hood sheet metal 210 by screws inserted through the connection holes 120. By fixing the edge structure 140 and the reinforcement structure 150 to the hood sheet metal 210, it is possible to ensure that the main structure 130 has a good relative posture with respect to the hood sheet metal 210, ensure the collapse space of the hood sheet metal 210, and avoid encroaching on the cabin space downward.

[0091] The disclosed embodiment also provides a car 300, which includes the aforementioned engine hood assembly 200. The engine hood sheet metal 210 is on the top, and the heat insulation pad 100 is on the bottom. The engine hood assembly 200 covers the cabin space, and the engine hood assembly 200 can also be lifted to expose the first cover layer 1 and the cabin space respectively. The car 300 of the disclosed embodiment can have a larger cabin space. The heat insulation pad 100 has a small encroachment on the cabin space.

[0092] Exemplarily, the automobile 300 is a new energy automobile, and its cabin space can provide a larger space for storage.

[0093] An embodiment of the present disclosure provides a method for manufacturing a thermal insulation pad, which includes the following steps.

[0094] Step S110, needle-punching, dipping and powdering the first non-woven fabric to obtain a prefabricated first non-woven fabric.

[0095] Step S120, needle punching and coating the second non-woven fabric to obtain a prefabricated second non-woven fabric. The second non-woven fabric may also be sprinkled with powder.

[0096] Step S130 , stacking the prefabricated first non-woven fabric, the prefabricated polypropylene glass fiber felt, and the prefabricated second non-woven fabric in sequence, wherein the powdered surface or the adhesive surface of the prefabricated first non-woven fabric and the prefabricated second non-woven fabric faces the prefabricated polypropylene glass fiber felt.

[0097] Step S140, heating the stacked structure, during which the rubber powder is melted and the prefabricated polypropylene glass fiber mat is matured.

[0098] Step S150, forming a thermal insulation pad by molding.

[0099] The steps of the method for manufacturing a thermal insulation pad provided in the embodiment of the present disclosure can manufacture the aforementioned thermal insulation pad 100 .

[0100] Exemplarily, the thickness of the first non-woven fabric layer is 0.5 mm to 1.5 mm, the thickness of the polypropylene glass fiber felt 2 is 2 mm to 5 mm, and the thickness of the second non-woven fabric layer is 0.5 mm to 1.5 mm.

[0101] Exemplarily, the method further comprises a punching step.

[0102] The technical features of the embodiments disclosed above can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] In the embodiments disclosed above, unless otherwise clearly specified and limited, the execution order of each step is not limited, for example, it can be executed in parallel, or it can be executed successively in different orders. The sub-steps of each step can also be executed alternately. The above-mentioned various forms of processes can be used, and steps can be reordered, added or deleted, as long as the desired results of the technical solution provided in the embodiment of the present disclosure can be achieved, and this document does not limit it here.

[0104] The embodiments disclosed above only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of patent protection required by the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A thermal insulation pad, characterized in that: It includes a first covering layer, a polypropylene glass fiber felt and a second covering layer stacked in sequence; The thermal insulation pad has a main body area, an edge area and a reinforcement area; The edge region surrounds the main body region and the reinforcement region, and the portion of the thermal insulation pad in the edge region is thinner than the portion of the thermal insulation pad in the main body region; The reinforcement area divides the main body area, and a portion of the thermal insulation pad in the reinforcement area is thinner than a portion of the thermal insulation pad in the main body area.

2. The thermal insulation pad according to claim 1, characterized in that: The thickness of the polypropylene glass fiber felt is greater than the thickness of the first covering layer, and the thickness of the polypropylene glass fiber felt is greater than the thickness of the second covering layer; The thickness of the thermal insulation pad in the main body area is 4 mm to 7 mm; the thickness of the thermal insulation pad in the edge area is 2 mm to 3 mm.

3. The thermal insulation pad according to claim 1, characterized in that: The thermal insulation pad is formed by pressing a portion of the edge area, and the thermal insulation pad is formed by pressing a portion of the reinforcement area; The portion of the thermal insulation pad in the edge region is thinner than the portion of the thermal insulation pad in the reinforcement region.

4. The thermal insulation pad according to claim 1, characterized in that: The thermal insulation pad has a plurality of reinforcement grooves in the reinforcement area.

5. The thermal insulation pad according to claim 4, characterized in that: At least two reinforcement grooves among the plurality of reinforcement grooves form a cross-type reinforcement structure.

6. The thermal insulation pad according to claim 4, characterized in that: The plurality of reinforcement grooves include a first reinforcement groove and a second reinforcement groove; the first reinforcement groove and the second reinforcement groove form a cross-shaped reinforcement structure located at the center of the thermal insulation pad.

7. The thermal insulation pad according to claim 4, characterized in that: At the reinforcement area, the second cover layer has the plurality of reinforcement grooves; The first covering layer has a grammage greater than that of the second covering layer.

8. The thermal insulation pad according to any one of claims 1 to 7, characterized in that: The first covering layer is needle-punched rubber-impregnated non-woven fabric.

9. The thermal insulation pad according to any one of claims 1 to 7, characterized in that: The first covering layer is a first non-woven fabric layer, and the second covering layer is a second non-woven fabric layer; The polypropylene glass fiber felt has a grammage greater than 950 g / m 2 The first nonwoven fabric layer has a grammage of 90 g / m 2 Up to 120g / m 2 The second nonwoven fabric layer has a grammage of 60 g / m 2 Up to 100g / m 2 .

10. The thermal insulation pad according to any one of claims 1 to 7, characterized in that: The weight of the thermal insulation pad is 1100 g / m 2 Up to 1400g / m 2 When the thickness of the thermal insulation pad in the reinforcement area is 2 mm to 3 mm; The weight of the thermal insulation pad is 1400g / m 2 Up to 1800g / m 2 When the thickness of the thermal insulation pad in the reinforcement area is 3 mm to 4 mm; The weight of the thermal insulation pad is greater than or equal to 1800 g / m 2 When the thickness of the thermal insulation pad in the reinforcement area is 4 mm to 5 mm.

11. The thermal insulation pad according to any one of claims 1 to 7, characterized in that: The edge area and / or the reinforcement area are provided with connection holes.

12. The engine cover assembly is characterized in that: include: Hood sheet metal; as well as The thermal insulation pad as described in any one of claims 1 to 11 is superimposed on the hood sheet metal.

13. An automobile, characterized in that Comprising the engine cover assembly as claimed in claim 12.

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