CN216942946U - Three-dimensional grid structure - Google Patents

Abstract

The utility model relates to a three-dimensional grid structure, which comprises two surface layers and a spacer weave, wherein the two surface layers are spaced from each other, the spacer weave connects the two surface layers together, the two surface layers are respectively formed by heavy warp flat weaves, the heavy warp flat weaves comprise a plurality of continuous loop weaves formed by surface layer yarns, each loop weave is distributed in a transverse direction, and the spacer weave is formed by spacer yarns, and the spacer yarns are respectively wound with the surface layer yarns on the two surface layers to connect the two surface layers together. According to the three-dimensional grid structure, the surface layer is formed by the heavy warp flat tissue, so that the high peeling force standard can be achieved while the glue amount used for coating is reduced, the economy and the high-strength peeling performance are both considered, and the cost is reduced; the glue spraying amount is reduced, and the glue spraying working hour can be reduced; and the performance verification times of the new project parts are reduced.

Description

Three-dimensional grid structure

Technical Field

The utility model relates to an automotive interior trim part, in particular to a three-dimensional grid structure.

Background

The traditional automotive interior part is a composite sponge coating part. CN104908328A discloses a three-dimensional MESH (3D MESH) cover, which comprises a skeleton, a 3D MESH and a skin, wherein the 3D MESH is covered between the skeleton and the skin to form a sandwich structure. The three-dimensional grid cladding part replaces the traditional sponge through the 3DMESH, so that the automotive interior part has better stability, comfort and attractiveness. However, when the sizing amount is small (50 g/m)²) The peeling force between the 3D MESH and the epidermis and the skeleton is lower and is generally less than 1000N/m, so that the peeling strength has a larger failure risk; when the requirement of peeling force is met, the using amount of the glue is large and is generally more than 100g/m²4 surfaces need to be sprayed, the utilization rate of glue is low, and the glue seepage condition is common.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of cost, glue leakage and the like caused by large glue usage amount in the prior art, the utility model provides a three-dimensional grid structure.

The three-dimensional grid structure comprises two face layers and a spacer weave, wherein the two face layers are spaced from each other, the spacer weave connects the two face layers together, the two face layers are respectively formed by heavy warp flat weaves, the heavy warp flat weaves comprise two continuous loop weaves formed by face layer yarns, each loop weave is distributed in one transverse direction, and the spacer weave is formed by spacer yarns, and the spacer yarns are respectively wound with the face layer yarns on the two face layers to connect the two face layers together.

Preferably, each stitch comprises two consecutive stitches, each stitch looping across a plurality of longitudinal inlay yarns.

Preferably, each coil tissue comprises two non-closed coils in succession.

Preferably, each coil tissue comprises one non-closed coil and one closed coil in succession.

Preferably, each stitch comprises two consecutive stitches, each stitch looping across two adjacent longitudinal inlay yarns.

Preferably, the spacer stitch is formed by a single diagonal, cross or upright spacer yarn.

Preferably, the heavy warp flat knit comprises five continuous loop stitches formed from the face layer yarns.

Preferably, the face yarns extend along opposite faces of the beds, and the spacer yarns shuttle between the beds.

According to the three-dimensional grid structure, the surface layer is formed by the heavy warp flat tissue, so that the high peeling force standard can be achieved while the glue amount used for coating is reduced, the economy and the high-strength peeling performance are both considered, and the cost is reduced; the glue spraying amount is reduced, and the glue spraying working hour can be reduced; and the performance verification times of the new project parts are reduced.

Drawings

FIG. 1 is a perspective view of a three-dimensional lattice structure in accordance with a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of the two needle bed warp knitting machine of the three-dimensional lattice structure of FIG. 1;

FIG. 3 shows a weave pattern of the face layers of the three-dimensional lattice structure of FIG. 1;

FIG. 4 is a schematic perspective view of a three-dimensional lattice structure in accordance with another preferred embodiment of the present invention;

fig. 5 shows a weave of a face layer of the three-dimensional lattice structure of fig. 4.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the three-dimensional lattice structure according to the present embodiment includes two face layers 1 spaced apart from each other and a spacer 2 located between the two face layers 1, wherein the spacer 2 connects the two face layers 1 together.

The three-dimensional lattice structure according to the present embodiment is woven by a double needle bed warp knitting machine. As shown in fig. 2, the face layer yarns extending along the facing surfaces of the front needle bed 1a and the back needle bed 1b form a face layer 1, and the spacer yarns reciprocating between the two needle beds 1a, 1b form a spacer stitch 2, wherein the spacer yarns are respectively wound around the face layer yarns on the face layer 1 to connect the face layers 1.

As shown in fig. 3, each of the face layers 1 is formed of a heavy warp flat stitch including five continuous loop stitches 11, each of the loop stitches 11 being distributed in one lateral direction. It should be understood that the five coil tissues 11 are presented herein by way of example only and not limitation, and that the specific number thereof may be adjusted as desired. Each stitch 11 includes two non-closed loops 111 in series, and each loop 111 is looped across two adjacent longitudinal inlay yarns. It should be understood that the loop formation across two adjacent MD inlay yarns is only used as an example and not a limitation, and the specific number of MD loops can be adjusted as required. In the particular knitting process, each face layer yarn is laid in a cross direction twice (to the left in fig. 3) in succession to form two loops 111 that are not closed, then the face layer yarn is extended outward (to the left in fig. 3) toward the upper cross direction, and in reverse twice (to the right in fig. 3) in succession in the upper cross direction to form two loops 111 that are not closed, then the face layer yarn is extended inward (to the right in fig. 3) toward the upper cross direction, and so forth to form face layer 1.

Example 2

As shown in fig. 4, the three-dimensional lattice structure according to the present embodiment also includes two face layers 10 spaced apart from each other and a spacer weave 20 between the two face layers 10, wherein the spacer weave 20 connects the two face layers 10 together, and spacer yarns forming the spacer weave 20 are respectively wound with face layer yarns on the two face layers 10 to connect the two face layers 10 together.

As shown in fig. 5, each of the face layers 10 is formed of a heavy warp flat stitch including five continuous loop stitches 110, each of the loop stitches 110 being distributed in one lateral direction. It should be understood that the five coil arrangements 110 are presented herein by way of example only and not limitation, and that the specific number thereof may be adjusted as desired. Each stitch 110 includes a non-closed stitch 1110 and a closed stitch 1111 in series, and each stitch 1110, 1111 is looped across two adjacent longitudinal inlay yarns. It should be understood that the loop formation across two adjacent MD inlay yarns is only used as an example and not a limitation, and the specific number of MD loops can be adjusted as required. In a particular knitting process, each face layer yarn is laid twice in succession in one cross direction (to the right in fig. 5), the first laying forms non-closed loops 1110, the second laying forms closed loops 1111 as the face layer yarn then extends inward (to the left in fig. 5) toward the upper cross direction, the last reverse laying twice in succession in the cross direction (to the left in fig. 5), the first laying forms non-closed loops 1110, the second laying forms closed loops 1111 as the face layer yarn then extends outward (to the right in fig. 5) toward the upper cross direction, and so on to form the face layer 10.

In summary, the facing layers 1, 10 of the three-dimensional lattice structure of the utility model are formed by heavy warp flat stitches and the spacer stitches 2, 20 may be formed by monoclinic, crossed or vertical spacer yarns. Specifically, the surface layer yarn is looped in an adjacent longitudinal direction in a transverse direction to form a stitch 11, 110, then extends to an intersection point of the adjacent longitudinal and transverse directions, and is looped in the adjacent longitudinal direction in the transverse direction to form another stitch 11, 110, so as to form the surface layer yarns 1, 10.

In a set of comparative experiments, a variable control method is adopted, no waterproof treatment is carried out on surface fabrics, and the glue spraying amount is 50g/m²In the case of (2), the peel strength of the three-dimensional lattice structure of the present invention is maximized to 660N/m, while the other structures: the stripping forces of warp flat, warp flat and weft insertion, chaining and weft insertion and positive and negative warp flat are respectively 420N/m, 300N/m, 360N/m and 450N/m。

The 3D MESH fabric may be waterproofed by incorporating teflon. In a preferred embodiment of the utility model, the adopted material is terylene coated with Teflon, the water dipping grade is 3.0 +/-0.5, and the test method refers to the detection and evaluation of the waterproof performance of GB/T4745-2012 textile, and can be used for detecting and evaluating the low glue spraying amount (50 g/m)²) A higher peel force (1000-1500N/m) was achieved.

Comparative example 1

Passenger side decorative board, JIYINGWANG 3.7mm MESH (with Teflon), surface layer organization is chaining and weft insertion, waterproof performance is unstable, spray glue density is 91g/m²The tearing force is about 1000N/m.

Comparative example 2

Passenger side decorative board, 3.0mm MESH of Mueller (with Teflon), surface layer tissue of warp flat and weft insertion, unstable waterproof performance and spray glue density of 100g/m²And tearing force: the skin-MESH is 1028N/m and the MESH-skeleton is 2108N/m. After the three-dimensional grid structure is adopted, the glue spraying density is 70g/m²And tearing force: the epidermis-MESH is 1321N/m, the MESH-framework is 1734N/m, and the improvement effect is obvious.

In a word, the three-dimensional grid structure can achieve the high stripping force standard while reducing the glue amount used for coating the 3D MESH, and has the advantages of economy, high-strength stripping performance and cost reduction; the glue spraying amount is reduced, and the glue spraying working hour can be reduced; and the performance verification times of the new project parts are reduced.

It should be understood that the three-dimensional lattice structure of the present invention is applicable to automotive interior parts including instrument panels, sub-instrument panels, door panels, decorative parts, and the like.

It is to be noted that the present invention (e.g., the inventive concept, etc.) has been described in the specification of this patent document and/or illustrated in the drawings according to exemplary embodiments; the examples of the present invention are presented by way of example only and are not intended as a limitation on the scope of the utility model. The construction and/or arrangement of the elements of the inventive concept as embodied in the present invention as described in the specification and/or illustrated in the drawings is illustrative only. Although exemplary embodiments of the present invention have been described in detail in this patent document, it is readily understood by those of ordinary skill in the art that equivalents, modifications, variations, and the like of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present invention; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of this invention. It should also be noted that various/other modifications, changes, substitutions, equivalents, changes, omissions, and the like may be made in the configuration and/or arrangement of the exemplary embodiments (e.g., in terms of concept, design, structure, device, form, assembly, construction, means, function, system, operation, operating conditions, performance, materials, composition, combination, and the like) without departing from the scope of the utility models; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of this invention. The scope of the present invention should not be limited to the subject matter (e.g., details, structures, functions, materials, acts, sequences, systems, results, etc.) described in the specification and/or drawings of this patent document. It is contemplated that the claims of this patent document will be interpreted appropriately to cover the full scope of the inventive subject matter (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it is to be understood that the terminology used in the patent document is for the purpose of providing a description of the subject matter of the exemplary embodiments, and is not intended to limit the scope of the utility model.

It should also be noted that, according to exemplary embodiments, the present invention may include conventional techniques (e.g., techniques implemented and/or integrated in exemplary embodiments, modifications, variations, combinations, equivalents), or may include any other applicable techniques (now and/or in the future), having the capability to perform the functions and/or acts described in the specification and/or illustrated in the figures. All such techniques (e.g., techniques implemented in embodiments, modifications, variations, combinations, equivalents, etc.) are deemed to be within the scope of the present invention as defined by the present patent document.

Claims (8)

1. A three-dimensional lattice structure comprising two face layers spaced apart from each other and a spacer structure connecting the face layers together, wherein the two face layers are respectively formed of a heavy warp flat structure comprising a plurality of continuous loop structures formed of face layer yarns, each of the loop structures being distributed in one lateral direction, and the spacer structure is formed of spacer yarns wound with the face layer yarns on the two face layers, respectively, to connect the face layers together.

2. The three-dimensional lattice structure of claim 1, wherein each stitch comprises two consecutive stitches, each stitch being looped across a plurality of longitudinal inlay yarns.

3. The three-dimensional lattice structure of claim 2, wherein each coil arrangement comprises two non-closed coils in series.

4. The three-dimensional lattice structure of claim 2, wherein each coil arrangement comprises a succession of one non-closed coil and one closed coil.

5. The three-dimensional lattice structures of claim 2, wherein each stitch comprises two consecutive stitches, each stitch looping across two adjacent longitudinal lay-in yarns.

6. The three-dimensional lattice structures of claim 1, wherein the spacer weave is formed of single diagonal, cross or upright spacer yarns.

7. The three-dimensional lattice structures of claim 1, wherein the heavy warp flat knit comprises five continuous loop stitches formed from the face layer yarns.

8. The three-dimensional lattice structures of claim 1, wherein the face yarns extend along opposite faces of the needle beds and the spacer yarns shuttle between the needle beds.

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