CN211808265U

CN211808265U - Composite component

Info

Publication number: CN211808265U
Application number: CN201922378775.3U
Authority: CN
Inventors: 沙月华; 邓富荣; 郭茂萍; 秦庆戊; 陈俊琛; 王东晖
Original assignee: 5elem Material Scientific Jiangsu Co ltd
Current assignee: 5elem Material Scientific Jiangsu Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-30
Anticipated expiration: 2029-12-25

Abstract

A composite structural member comprising a plate-like structural member and a joining member fixed together with the plate-like structural member, the plate-like structural member comprising a first skin base material, a second skin base material, and an intermediate core material located between the first skin base material and the second skin base material, the plate-like structural member being provided with a joining surface to which the joining member is joined, the intermediate core material having an internal void, the joining surface exposing the internal void on the joining surface, the joining member being embedded in the internal void. In such an arrangement, the composite member of the present invention has a lower requirement on the profile of the joint surface and is easy to manufacture.

Description

Composite component

Technical Field

The invention relates to a composite component, and belongs to the technical field of shells of electronic and electrical equipment.

Background

As electronic and electrical devices (e.g., notebook computers) have higher and higher requirements for housings, attention is being paid to composite boards having a small thickness and a good structural strength. Existing composite panels typically include upper and lower surface layer substrates with an intermediate core positioned therebetween. The composite board needs to be integrated with a bonding member (e.g., resin) by, for example, injection molding, so as to form a housing of an electronic/electrical device.

However, the bonding strength of the composite board and the resin in the prior art is generally not high. To improve the bonding strength, the machining is too complicated, resulting in high costs. Some prior art use soft middle core, rely on injection pressure to get in the soft middle core extrusion that originally is the same level with surface layer substrate and sink in and form embedding front end, make the degree of difficulty big. And when the soft material is adopted as the middle core material, the rigidity of the formed composite member is poor, and the bonding strength is weak. In some prior art, the concave or convex structure of the middle core material is formed by secondary cutting (the first cutting can only form the side end surface of the composite board). However, this processing method is difficult to manufacture and has a high processing cost.

Disclosure of Invention

The object of the invention is to provide a composite component which is easy to manufacture.

In order to achieve the purpose, the invention adopts the following technical scheme: a composite structural member comprising a plate-like structural member and a joining member fixed together with the plate-like structural member, the plate-like structural member comprising a first skin base material, a second skin base material, and an intermediate core material located between the first skin base material and the second skin base material, the plate-like structural member being provided with a joining surface to which the joining member is joined, the intermediate core material having an internal void, the joining surface exposing the internal void on the joining surface, the joining member being embedded in the internal void.

As a further improved technical solution of the present invention, the plate-like member is parallel to a first plane, and the joint surface is perpendicular to the first plane.

As a further improved aspect of the present invention, the plate-like member is parallel to a first plane, and the joining surface is inclined with respect to the first plane.

In a further improved aspect of the present invention, the joint surface is a straight line or a curved line as viewed from a direction perpendicular to the plate-like member.

As a further improved technical solution of the present invention, the joint surface is a curved line when viewed from a direction perpendicular to the plate-shaped member, the plate-shaped member includes a plurality of protrusions formed along the curved line and a groove located between two adjacent protrusions, the protrusions extend into the joint member, and the joint member extends into the groove.

As a further improved technical scheme of the invention, the groove is of an inverted buckle structure and comprises a neck part and an inner expansion part communicated with the neck part, wherein the width of the inner expansion part is greater than that of the neck part.

As a further improved aspect of the present invention, the joint surface is formed by cutting, and the internal void is spherical before being cut by the joint surface.

As a further improved technical scheme of the invention, the middle core material is made of at least one of light material filling resin, foaming material, honeycomb material and fiber reinforced material.

As a further improved technical scheme of the invention, the light material filling resin is hollow glass bead filling epoxy resin.

As a further improved technical scheme of the invention, the foaming material is Polymethacrylimide (PMI) foam, phenolic foam or metal foam.

In a further improved aspect of the present invention, the bonding member is made of resin, and the intermediate core material and the resin have the same material composition.

As a further improved technical scheme of the invention, the same material component is a PC material.

As a further improved technical scheme of the invention, the first surface layer substrate is made of at least one material of a carbon fiber reinforced composite material, a glass fiber reinforced composite material, a basalt fiber reinforced composite material, an aramid fiber reinforced composite material and a metal sheet; the second surface layer base material is made of at least one material of carbon fiber reinforced composite materials, glass fiber reinforced composite materials, basalt fiber reinforced composite materials, aramid fiber reinforced composite materials and metal sheets.

Compared with the prior art, the intermediate core material has the internal gap, the joint surface exposes the internal gap on the joint surface, and the joint member is embedded in the internal gap. With such an arrangement, the contour of the joint surface is less required and the manufacture is easy.

Drawings

FIG. 1 is a perspective view of a composite member of the present invention.

Fig. 2 is an exploded perspective view of fig. 1.

Fig. 3 is a perspective view of the plate member of fig. 2.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a schematic sectional view taken along line a-a in fig. 4.

Fig. 6 is a partially enlarged view of the circled portion in fig. 5.

Fig. 7 is a microscopic enlarged view of the circled portion of fig. 6.

Fig. 8 is a top view of fig. 1.

Fig. 9 is a schematic sectional view taken along line B-B in fig. 8.

Fig. 10 is a partially enlarged view of the circled portion in fig. 9.

Fig. 11 is a microscopic enlarged view of the circled portion in fig. 10.

Fig. 12 is a perspective view of the plate member of fig. 3 in another embodiment.

Fig. 13 is a top view of fig. 12.

Fig. 14 is a perspective view of the plate-like member in fig. 3 in a second embodiment.

Fig. 15 is a perspective view of the plate-like member in fig. 3 in a third embodiment.

Fig. 16 is a perspective view of the plate-like member in fig. 3 in a fourth embodiment.

Detailed Description

Referring to fig. 1 to 13, the present invention discloses a composite member 100, which includes a plate-shaped member 1 and a connecting member 2 fixed to the plate-shaped member 1. The plate-like member 1 includes a first skin substrate 11, a second skin substrate 12, and an intermediate core 13 located between the first skin substrate 11 and the second skin substrate 12. In the illustrated embodiment of the present invention, the first surface base material 11 is an upper surface base material, and the second surface base material 12 is a lower surface base material.

The plate-like member 1 is provided with a joint surface 10 to which the joint member 2 is joined. The intermediate core material 13 has an inner space 131, the joint surface 10 exposes the inner space 131 on the joint surface 10, and the joint member 2 is fitted into the inner space 131. In one embodiment of the present invention, the coupling member 2 is resin, and is injection-molded with the plate-shaped member 1.

Referring to fig. 5 and 6, the plate-shaped member 1 is parallel to a first plane M, and the joint surface 10 is perpendicular to the first plane M. Referring to fig. 12 and 13, in other embodiments, the joint surface 10 may be inclined with respect to the first plane M. The inclination angle is N, and N is more than or equal to 10 degrees and less than 90 degrees.

Referring to fig. 5 and 10, in the illustrated embodiment of the present invention, the bonding surface 10 penetrates the first surface base material 11, the second surface base material 12, and the intermediate core material 13. In another embodiment, as shown in fig. 14, the joint surface 10 may penetrate only one of the first surface base material 11 and the second surface base material 12, and the joint surface 10 may be cut to just the surface of the intermediate core material 13 in the thickness direction. Of course, as shown in fig. 15 and 16, in other embodiments, the bonding surface 10 may penetrate only one of the first surface base material 11 and the second surface base material 12. The engagement surface 10 is cut. The joint surface 10 cuts at least a part of the intermediate core material 13 in the thickness direction while cutting the internal voids 131 to expose the internal voids 131 on the joint surface 10.

The joint surface 10 is a straight line (as shown in fig. 14 and 15) or a curved line (as shown in fig. 1 and 16) when viewed from a direction perpendicular to the plate-like member 1. When the joint surface 10 is a straight line viewed from a direction perpendicular to the plate-shaped member 1, machining is simple at this time because it is not necessary to machine an inward concave or outward convex structure, and the machining can be realized by water jet cutting, so that pollution is low. Referring to fig. 4, in the illustrated embodiment of the present invention, the joint surface 10 is curved when viewed from a direction perpendicular to the plate-shaped member 1. The plate-shaped member 1 includes a plurality of protrusions 14 formed along the curved line and a groove 15 between adjacent two of the protrusions 14. Referring to fig. 8, the protrusion 14 extends into the coupling member 2, and the coupling member 2 extends into the groove 15, so that the plate-shaped member 1 and the coupling member 2 are embedded into each other, thereby increasing the contact area and the connection structural strength of the two.

The groove 15 is of an inverted structure and includes a neck 151 and an inner enlargement 152 communicating with the neck 151, wherein a width W2 of the inner enlargement 152 is greater than a width W1 of the neck 151. With this arrangement, the strength of the connection between the plate-like member 1 and the connection member 2 is increased, and the plate-like member and the connection member are prevented from coming off from each other.

Referring to fig. 7 and 11, the internal voids 131 are spherical before being cut by the joint surface 10 when viewed microscopically (e.g., 1 to 1000 μm). Of course, in other embodiments, the internal voids 131 may have other shapes before being cut by the joint surface 10.

The middle core material 13 is made of at least one of light material filled resin, foaming material, honeycomb material and fiber reinforced material. The light material filling resin is hollow glass bead filling epoxy resin. The foaming material is Polymethacrylimide (PMI) foam, phenolic foam or metal foam.

Preferably, the intermediate core 13 has the same material composition as the resin to improve the bonding strength of the intermediate core 13 to the bonding member 2. The same material component is a PC material.

The first surface layer substrate 11 is made of at least one material selected from a carbon fiber reinforced composite material, a glass fiber reinforced composite material, a basalt fiber reinforced composite material, an aramid fiber reinforced composite material (for example, a kevlar fiber reinforced composite material), and a metal sheet; the second surface base material 12 is made of at least one material selected from a carbon fiber reinforced composite material, a glass fiber reinforced composite material, a basalt fiber reinforced composite material, an aramid fiber reinforced composite material (e.g., a kevlar fiber reinforced composite material), and a metal sheet.

Compared to the prior art, the intermediate core 13 of the present invention has the inner space 131, the joint surface 10 exposes the inner space 131 on the joint surface 10, and the joint member 2 is inserted into the inner space 131. Thus, the contour of the joint surface 10 is required to be low, the amount of cutting work is reduced, the processing cost is low, and the manufacturing is easy.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, such as the description of the directions of "upper", "lower", etc., and although the present specification has described the present invention in detail with reference to the above embodiments, the ordinary skilled in the art should understand that the technical personnel in the technical field can still make modifications or equivalent substitutions on the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. A composite structural member (100) comprising a plate-like structural member (1) and a joining member (2) fixed together with the plate-like structural member (1), the plate-like structural member (1) comprising a first skin base material (11), a second skin base material (12), and an intermediate core material (13) between the first skin base material (11) and the second skin base material (12), the plate-like structural member (1) being provided with a joining face (10) to which the joining member (2) is joined, characterized in that: the intermediate core material (13) has an internal void (131), the joint surface (10) exposes the internal void (131) on the joint surface (10), and the joining member (2) is embedded in the internal void (131).

2. The composite member (100) of claim 1, wherein: the plate-shaped member (1) is parallel to a first plane (M), and the joint surface (10) is perpendicular to the first plane (M).

3. The composite member (100) of claim 1, wherein: the plate-shaped member (1) is parallel to a first plane (M), and the joint surface (10) is inclined with respect to the first plane (M).

4. The composite member (100) of claim 1, wherein: the joint surface (10) is a straight line or a curved line as viewed from a direction perpendicular to the plate-like member (1).

5. The composite member (100) of claim 4, wherein: the joint surface (10) is a curve when viewed from a direction perpendicular to the plate-shaped member (1), the plate-shaped member (1) comprises a plurality of protrusions (14) formed along the curve and a groove (15) located between two adjacent protrusions (14), the protrusions (14) extend into the combination member (2), and the combination member (2) extends into the groove (15).

6. The composite member (100) of claim 5, wherein: the groove (15) is of an inverted buckle structure and comprises a neck (151) and an inner expansion part (152) communicated with the neck (151), wherein the width (W2) of the inner expansion part (152) is larger than the width (W1) of the neck (151).

7. The composite member (100) of claim 1, wherein: the engagement surface (10) is cut, and the internal void (131) is spherical before being cut by the engagement surface (10).

8. The composite member (100) of claim 1, wherein: the middle core material (13) is made of at least one of light material filling resin, foaming material, honeycomb material and fiber reinforced material.

9. The composite member (100) of claim 8, wherein: the light material filling resin is hollow glass bead filling epoxy resin.

10. The composite member (100) of claim 8, wherein: the foaming material is Polymethacrylimide (PMI) foam, phenolic foam or metal foam.

11. The composite member (100) of claim 1, wherein: the bonding member (2) is made of resin, and the intermediate core material (13) has the same material composition as the resin.

12. The composite member (100) of claim 11, wherein: the same material component is a PC material.

13. The composite member (100) of claim 1, wherein: the first surface layer base material (11) is made of at least one material of a carbon fiber reinforced composite material, a glass fiber reinforced composite material, a basalt fiber reinforced composite material, an aramid fiber reinforced composite material and a metal sheet; the second surface layer base material (12) is made of at least one material of carbon fiber reinforced composite materials, glass fiber reinforced composite materials, basalt fiber reinforced composite materials, aramid fiber reinforced composite materials and metal sheets.