Split type metal embedded part structure suitable for cellular board

Abstract

The split type metal embedded part structure suitable for the cellular board comprises a center connecting cylinder, and the upper end and the lower end of the center connecting cylinder are configured to be positioning end faces; the upper mounting nut and the lower mounting nut are respectively connected to the upper and lower ends of the central connecting cylinder; the lower portion of the bonding gasket is positioned through the upper installation nut, and a gap is formed between the upper portion of the bonding gasket and the upper installation nut and used for clamping the panel. The device is simple in structure, all parts are of rotary structures, aluminum alloy materials can be used, the device is obtained through a conventional turning machining technology, the manufacturing efficiency is high, and the production cost is low; the upper mounting screw cap and the lower mounting screw cap are provided with obvious circular truncated cone characteristics, so that the contact and bonding area between the end surface of the embedded part and the panel is increased, the stress concentration phenomenon near the embedded part is reduced, and the reliability of the cellular board in a working state is improved; and the bonding gasket made of aluminum alloy is additionally arranged, so that a smooth and flat mounting plane can be provided for the honeycomb plate.

Description

Technical Field

[0001] The invention relates to the technical field of composite material manufacturing, and in particular to a split metal embedded part structure suitable for honeycomb panels. Background Art

[0002] Compared with traditional metal materials such as aluminum alloy and carbon steel, honeycomb panels can be regarded as a special composite material with the advantages of low surface density, high rigidity, small expansion after heating, and good vibration reduction effect. It has been widely used in aerospace, automobile and other fields. In order to set external mechanical interfaces in honeycomb panel parts and improve the overall rigidity of the sandwich structure, it is necessary to embed a certain number of embedded parts inside the honeycomb panel during the preparation process. Therefore, the rationality of the embedded part structure design will directly affect the load-bearing capacity and reliability of honeycomb panel parts, as well as the difficulty of assembly and forming of honeycomb sandwich structures in the manufacturing process. It is a key link that affects the working performance and preparation efficiency of honeycomb panel parts.

[0003] The patent with publication number CN 117621549 A discloses a metal embedded part structure, which mainly includes a metal embedded part, and a circular patch and a patch made of carbon fiber material; the circular patch cooperates and bonds with the convex structure at the top of the metal embedded part, and the patch bonds with the lower end of the embedded part. The prior art also has the following shortcomings: a) The height of the single metal embedded part cannot be adjusted, which causes a gap between the embedded part and the panel during the assembly process, resulting in a large difference in the load that the embedded parts at various locations in the honeycomb panel can withstand; b) The bonding area between the embedded part and the panel is small, resulting in a high stress level near the embedded part in the working state of the honeycomb panel, and the bonding position is prone to damage, which reduces the reliability of the honeycomb panel.

[0004] Based on the above technical problems, technicians in this field urgently need to develop a split metal embedded part structure suitable for honeycomb panels that has a simple structure, can reduce stress concentration near the embedded parts of the honeycomb panels, has a large bearing capacity, and is highly universal. Summary of the invention

[0005] The object of the present invention is to provide a split metal embedded part structure suitable for honeycomb panels which has a simple structure, can reduce stress concentration near the embedded parts of honeycomb panels, has a large bearing capacity and is highly universal.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention discloses a split metal embedded component structure suitable for a honeycomb panel, the metal embedded component structure comprising:

[0008] A central connecting tube, wherein the central connecting tube is a thin-walled tubular part, and the upper and lower ends of the central connecting tube are configured as positioning end faces;

[0009] An upper mounting nut and a lower mounting nut respectively connected to the upper and lower ends of the central connecting tube, wherein the upper mounting nut has an external interface;

[0010] The metal embedded structure also includes:

[0011] The lower part of the adhesive gasket is positioned by the upper mounting nut, and a gap is formed between the upper part of the adhesive gasket and the upper mounting nut for clamping the panel.

[0012] Further, the upper mounting nut includes an upper truncated cone, and the upper surface of the upper truncated cone contacts the panel; and

[0013] A countersunk hole is provided at the center of the upper truncated cone, the side wall of the countersunk hole forms a countersunk head, the countersunk head and the bonding gasket are positioned by the hole axis cooperation, and a threaded through hole is provided at the center of the countersunk hole to form the external interface;

[0014] The upper truncated cone is provided with a shoulder at one end away from the countersunk hole, and a first external thread is arranged on the shoulder. Positioning is achieved through the shoulder and the upper truncated cone is connected to the central connecting tube through the first external thread.

[0015] Furthermore, the central connecting tube is provided with two internal threaded through holes which are symmetrical up and down, and is respectively connected to the upper mounting nut and the lower mounting nut through the two internal threaded through holes;

[0016] The middle portion of the central connecting cylinder is configured as a process chamber.

[0017] Further, the lower mounting nut includes a lower truncated cone, and the lower surface of the lower truncated cone contacts the panel; and

[0018] A second external thread fixed on the lower circumferential platform, connected to the central connecting tube via the second external thread;

[0019] A through hole is arranged along the center of the lower truncated cone and penetrates the second external thread.

[0020] Furthermore, the bonding gasket includes a truncated cone and a cylindrical surface, the upper surface of the truncated cone is configured as a mounting surface, and the lower surface is configured as an annular surface, the cylindrical surface is mounted on the annular surface, and positioning is achieved by the cooperation between the cylindrical surface and the upper mounting nut.

[0021] Preferably, the bonding gasket is made of aluminum alloy.

[0022] In the above technical solution, the present invention provides a split metal embedded structure suitable for honeycomb panels, which has the following beneficial effects:

[0023] The present invention is a split metal embedded part structure suitable for honeycomb panels, all parts of which are rotary structures, can be made of aluminum alloy materials and obtained through conventional turning processes, with high manufacturing efficiency and low production cost;

[0024] The upper mounting nut and the lower mounting nut of the present invention are both provided with obvious truncated cone features, thereby increasing the contact and bonding area between the end surface of the embedded part and the panel, reducing the stress concentration phenomenon near the embedded part, and improving the reliability of the honeycomb panel in the working state; and an aluminum alloy bonding gasket is added, and this structure can provide a smooth and flat mounting surface for the honeycomb panel;

[0025] The present invention adopts a split configuration, and the various parts are connected to each other by threads. The axial size of the entire embedded part can be adjusted by trimming the length of the central connecting tube to adapt to the thickness of the honeycomb panel and control the gap between the embedded part and the panel. The assembly process is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A schematic diagram of a split metal embedded structure in a honeycomb panel provided in an embodiment of the present invention;

[0028] Figure 2 A front view schematic diagram of a nut installed on a split metal embedded structure suitable for a honeycomb panel provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the reverse side of a nut installed on a split metal embedded structure suitable for a honeycomb panel provided by an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of a split metal embedded structural core connection tube applicable to a honeycomb panel provided in an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of the internal structure of a split metal embedded structure center connecting tube applicable to a honeycomb panel provided by an embodiment of the present invention;

[0032] Figure 6 A front view schematic diagram of a nut installed under a split metal embedded structure applicable to a honeycomb panel provided by an embodiment of the present invention;

[0033] Figure 7A schematic diagram of the reverse side of a nut installed under a split metal embedded structure applicable to a honeycomb panel provided by an embodiment of the present invention;

[0034] Figure 8 A schematic front view of a split metal embedded structure bonding gasket suitable for a honeycomb panel provided by an embodiment of the present invention;

[0035] Fig. 9 A schematic diagram of the reverse side of a split metal embedded structure bonding gasket suitable for a honeycomb panel provided in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Upper mounting nut; 2. Center connecting tube; 3. Lower mounting nut; 4. Adhesive gasket;

[0038] 11. upper truncated cone; 12. countersunk hole; 13. shaft shoulder; 14. first external thread; 121. countersunk head; 122. threaded through hole;

[0039] 21. Positioning end face; 22. Internal thread through hole; 23. Process cavity;

[0040] 31. lower truncated cone; 32. second external thread; 33. through hole;

[0041] 41. Mounting surface; 42. Cylindrical surface; 43. Annular surface. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] See also Figures 1 to 9 As shown;

[0044] The present invention discloses a split metal embedded component structure suitable for a honeycomb panel, the metal embedded component structure comprising:

[0045] A central connecting tube 2, wherein the central connecting tube 2 is a thin-walled tubular part, and the upper and lower ends of the central connecting tube 2 are configured as positioning end surfaces 21;

[0046] An upper mounting nut 1 and a lower mounting nut 3 respectively connected to the upper and lower ends of the central connecting tube 2, wherein the upper mounting nut 1 has an external interface;

[0047] The metal embedded structure also includes:

[0048] The lower part of the adhesive gasket 4 is positioned by the upper mounting nut 1, and a gap is formed between the upper part of the adhesive gasket 4 and the upper mounting nut 1 for clamping the panel.

[0049] As a further introduction to this embodiment, the upper mounting nut 1 includes an upper truncated cone 11, the upper surface of which is in contact with the panel. The provision of the upper truncated cone 11 expands the contact and bonding area between the embedded part and the panel, and can effectively alleviate the occurrence of stress concentration.

[0050] A countersunk hole 12 is provided at the center of the upper truncated table 11, and a countersunk head 121 is formed on the side wall of the countersunk hole 12. The countersunk head 121 and the bonding gasket 4 are positioned by hole-axis cooperation, and a threaded through hole 122 is provided at the center of the countersunk hole 12 to form the external interface, and the thread length and nominal diameter can be determined according to specific usage requirements;

[0051] The upper truncated cone 11 is provided with a shoulder 13 at one end away from the countersunk hole 12 . The shoulder 13 is provided with a first external thread 14 . Positioning is achieved through the shoulder 13 and the upper truncated cone 11 is connected to the central connecting tube 2 through the first external thread 14 .

[0052] As a further introduction to this embodiment, the central connecting tube 2 is the main part of the embedded structure, and is provided with two upper and lower symmetrical internal threaded through holes 22, which are respectively connected to the upper mounting nut 1 and the lower mounting nut 3 through the two internal threaded through holes 22; the two positioning end faces 21 ensure the relative position of the upper mounting nut 1 and the lower mounting nut 3 along the axial direction;

[0053] The middle portion of the central connecting tube 2 is configured as a process cavity 23, which can reduce the weight of the embedded parts.

[0054] As a further introduction to this embodiment, the lower mounting nut 3 is similar in structure to the upper mounting nut 1, and the lower mounting nut 3 includes a lower truncated cone 31, the lower surface of which contacts the panel. 起 To increase the contact and bonding area;

[0055] A second external thread 32 fixed on the lower truncated cone 31 is connected to the central connecting tube 2 via the second external thread 32;

[0056] A through hole 33 is provided along the center of the lower truncated cone 31 and passes through the second external thread 32. The diameter of the through hole 33 is slightly larger than the nominal diameter of the threaded through hole 122. The panel in contact with the lower mounting nut 3 also needs to be pre-drilled at a position corresponding to the through hole 33. The diameter of the hole is larger than the diameter of the through hole 33. The threaded through hole 122 can be directly observed from one side of the bottom panel.

[0057] As a further introduction to this embodiment, the adhesive gasket 4 includes a truncated cone and a cylindrical surface 42. The upper surface of the truncated cone is configured as a mounting surface 41, and the lower surface is configured as an annular surface 43. The cylindrical surface 42 is mounted on the annular surface 43, and the cylindrical surface 42 is matched with the upper mounting nut 1 to achieve positioning. Specifically, the mounting surface 41 can be manually polished to obtain a higher surface quality; the cylindrical surface 42 is matched with the countersunk hole 12 of the upper mounting nut 1 to achieve accurate positioning of the adhesive gasket 4, and the panel is clamped between the adhesive gasket 4 and the upper mounting nut 1; the panel in contact with the upper mounting nut 1 is pre-drilled at the position corresponding to the cylindrical surface 42, and the diameter of the hole is slightly larger than the diameter of the cylindrical surface 42; the annular surface 43 is connected and fixed to the panel by bonding.

[0058] As a preferred technical solution of this embodiment, the bonding gasket 4 is made of aluminum alloy.

[0059] In the above technical solution, the present invention provides a split metal embedded structure suitable for honeycomb panels, which has the following beneficial effects:

[0060] The present invention is a split metal embedded part structure suitable for honeycomb panels, all parts of which are rotary structures, can be made of aluminum alloy materials and obtained through conventional turning processes, with high manufacturing efficiency and low production cost;

[0061] The upper mounting nut and the lower mounting nut of the present invention are both provided with obvious truncated cone features, thereby increasing the contact and bonding area between the end surface of the embedded part and the panel, reducing the stress concentration phenomenon near the embedded part, and improving the reliability of the honeycomb panel in the working state; and an aluminum alloy bonding gasket is added, and this structure can provide a smooth and flat mounting surface for the honeycomb panel;

[0062] The present invention adopts a split configuration, and the various parts are connected to each other by threads. The axial size of the entire embedded part can be adjusted by trimming the length of the central connecting tube to adapt to the thickness of the honeycomb panel and control the gap between the embedded part and the panel. The assembly process is simple and easy to use.

[0063] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A split metal embedded structure suitable for honeycomb panels, characterized in that: The metal embedded structure comprises: A central connecting tube (2), wherein the central connecting tube (2) is a thin-walled tubular part, and the upper and lower ends of the central connecting tube (2) are configured as positioning end surfaces (21); An upper mounting nut (1) and a lower mounting nut (3) respectively connected to the upper and lower ends of the central connecting tube (2), wherein the upper mounting nut (1) has an external interface; The metal embedded structure also includes: The lower part of the adhesive gasket (4) is positioned by the upper mounting nut (1), and a gap is formed between the upper part of the adhesive gasket (4) and the upper mounting nut (1) for clamping the panel.

2. A split metal embedded structure suitable for honeycomb panels according to claim 1, characterized in that: The upper mounting nut (1) comprises an upper truncated cone (11), the upper surface of the upper truncated cone (11) being in contact with the panel; and A countersunk hole (12) is provided at the center of the upper truncated cone (11), a countersunk head portion (121) is formed on the side wall of the countersunk hole (12), the countersunk head portion (121) and the bonding gasket (4) are positioned by hole-axis cooperation, and a threaded through hole (122) is provided at the center of the countersunk hole (12) to form the external interface; The upper truncated cone (11) is provided with a shoulder (13) at one end away from the countersunk hole (12), and the shoulder (13) is provided with a first external thread (14). Positioning is achieved through the shoulder (13) and the upper truncated cone (11) is connected to the central connecting tube (2) through the first external thread (14).

3. A split metal embedded structure suitable for honeycomb panels according to claim 1, characterized in that: The central connecting tube (2) is provided with two internal threaded through holes (22) which are symmetrical in upper and lower directions, and is respectively connected to the upper mounting nut (1) and the lower mounting nut (3) through the two internal threaded through holes (22); The middle portion of the central connecting tube (2) is configured as a process chamber (23).

4. A split metal embedded structure suitable for honeycomb panels according to claim 1, characterized in that: The lower mounting nut (3) comprises a lower truncated cone (31), the lower surface of the lower truncated cone (31) being in contact with the panel; and A second external thread (32) fixed on the lower truncated table (31), connected to the central connecting tube (2) via the second external thread (32); A through hole (33) is arranged along the center of the lower truncated cone (31) and penetrates the second external thread (32).

5. The split metal embedded structure suitable for honeycomb panels according to claim 1, characterized in that: The bonding gasket (4) comprises a truncated cone and a cylindrical surface (42), the upper surface of the truncated cone is configured as a mounting surface (41), and the lower surface is configured as an annular surface (43), the cylindrical surface (42) is mounted on the annular surface (43), and positioning is achieved by the cooperation between the cylindrical surface (42) and the upper mounting nut (1).

6. A split metal embedded structure suitable for honeycomb panels according to any one of claims 1 to 5, characterized in that: The bonding gasket (4) is made of aluminum alloy.

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