Flexible skin honeycomb structure and processing method thereof

Abstract

The invention discloses a flexible skin honeycomb structure and a processing method thereof, and relates to the technical field of flexible skins. The technical problems that in an existing flexible skin honeycomb structure, the integrity of a skin is damaged due to porous connection of the skin and a honeycomb core, adhesive connection is prone to falling off, and materials are aged and cannot be repeatedly used due to hot-pressing connection are solved. The flexible skin honeycomb structure comprises a honeycomb core, a skin and a lock catch, the honeycomb core comprises a core body and a plurality of bases; the core body comprises a skin supporting part and a base supporting part; the lower surface of the base is connected with the base supporting part, and the upper surface of the base is flush with the skin supporting part; a mounting groove is formed in the upper surface of the base; a clamping seat is arranged in the mounting groove; the lock catch comprises a connecting platform and a clamping block; the clamping block is matched with the clamping seat; the connecting platform is wrapped with the skin, and the skin is pressed between the connecting platform and the inner wall of the mounting groove; and the skin is made of a high-elasticity material. The invention also provides a processing method of the flexible skin honeycomb structure.

Description

Technical Field

[0001] This application relates to the field of flexible skin technology, and in particular to a flexible skin honeycomb structure and its processing method. Background Technology

[0002] The connection between the flexible skin and the honeycomb core in a flexible skin honeycomb panel is a core challenge in the design and fabrication of flexible structures. Existing connection methods include perforated connections, adhesive bonding, and thermo-pressing / sewing connections. The disadvantages of perforated connections are: holes need to be created in the skin, compromising its integrity and leading to reduced waterproofing and airtightness; adhesive bonding is prone to detachment due to fatigue or environmental factors because of the low surface energy of flexible materials, and cannot be repeatedly disassembled; thermo-pressing / sewing connections can lead to skin aging or continuous damage. Therefore, there is an urgent need for a perforated, adhesive-free, and repeatedly detachable flexible skin honeycomb structure to solve these technical problems. Summary of the Invention

[0003] The embodiments of this application provide a flexible skin honeycomb structure and its processing method, which solves the technical problems in existing flexible skin honeycomb structures, such as the perforated connection between the skin and the honeycomb core damaging the integrity of the skin, the easy detachment of adhesive connections, the aging of materials caused by hot-pressing connections, and the inability to reuse the structure.

[0004] To achieve the above objectives, in one aspect, embodiments of this application provide a flexible skin honeycomb structure, including a honeycomb core, a skin, and a latch; the honeycomb core includes a core body and a plurality of bases disposed on the core body; the core body includes a skin support portion and a base support portion; the lower surface of the base is connected to the base support portion, and the upper surface is flush with the skin support portion; an installation groove is formed on the upper surface of the base; a snap-fit ​​seat is provided in the installation groove; the latch includes a connecting platform and a snap-fit ​​block disposed at the bottom of the connecting platform; the snap-fit ​​block is adapted to the snap-fit ​​seat; after the snap-fit ​​block is snapped into the snap-fit ​​seat, the connecting platform is flush with the upper surface of the snap-fit ​​seat; the skin is wrapped around the connecting platform, and at least a portion of the skin is pressed between the connecting platform and the inner wall of the installation groove; the skin is made of a highly elastic material.

[0005] Furthermore, the cross-section of the honeycomb core is rectangular; the number of bases is five, of which four bases are distributed in a rectangular array and are respectively close to the four corners of the honeycomb core, and the fifth base is located at the center of the honeycomb core.

[0006] Furthermore, the surface of the mounting groove is hemispherical, the snap-fit ​​seat is located at the center of the bottom of the mounting groove, the side of the snap-fit ​​seat is cylindrical, and the two are smoothly transitioned by rounded corners.

[0007] Furthermore, the snap-fit ​​block includes an inverted frustum-shaped snap-fit ​​section and a cylindrical transition section; the cylindrical transition section is connected to the connecting platform, and the diameter of the cylindrical transition section is smaller than the large end diameter of the inverted frustum-shaped snap-fit ​​section; the snap-fit ​​seat is provided with a cylindrical slot, the diameter of the opening of the cylindrical slot is smaller than the diameter of the slot body, and it matches the diameter of the cylindrical transition section of the snap-fit ​​block; after the latch is installed, the inverted frustum-shaped snap-fit ​​section is located in the cylindrical slot, and the cylindrical transition section is located at the opening of the cylindrical slot; when the latch is disassembled, the inverted frustum-shaped snap-fit ​​section can be disengaged from the cylindrical slot.

[0008] Furthermore, the taper of the inverted frustum-shaped snap-fit ​​section is 30° to 60°, its large end diameter is adapted to the groove diameter of the cylindrical snap-fit ​​groove, and its height is equal to the groove depth of the cylindrical snap-fit ​​groove.

[0009] Furthermore, the end of the frustum-shaped snap-fit ​​section is provided with a threaded hole.

[0010] Furthermore, both the honeycomb core and the latch are manufactured using 3D printing.

[0011] On the other hand, embodiments of this application also provide a processing method based on the above-mentioned flexible skin honeycomb structure, including the following steps: S1, vacuuming is performed by a vacuuming device to stretch the skin under atmospheric pressure and attach it to the inner wall of the glass cup of the vacuuming device; the vacuuming device includes a vacuum machine and a glass cup; the opening of the glass cup faces upward, the mouth of the glass cup is provided with a first annular magnet, and the bottom of the glass cup is connected to the vacuum machine through a pipeline; S2, the lock is placed upside down into the bottom of the glass cup and fixed, and then the vacuum state is released, so that the skin elastically contracts and covers the connecting platform; S3, the connecting platform covered with the skin is taken out and snapped into the snap-fit ​​seat in the core body to achieve mechanical locking.

[0012] Furthermore, the skin covers the glass cup, and a second annular magnet is provided on the upper surface of the skin; the second annular magnet has the same shape as the first annular magnet but opposite magnetic properties; after the glass cup is evacuated, the skin is stretched and adheres to the inner wall of the cup by atmospheric pressure.

[0013] Furthermore, the bottom surface of the latch is provided with a threaded hole; the screw is screwed into the threaded hole, and the latch is fixed upside down to the bottom of the glass cup by the screw.

[0014] This application has the following advantages over the prior art:

[0015] 1. The flexible skin honeycomb structure of this application provides a snap-fit ​​seat on the honeycomb core and detachably connects the skin and the honeycomb core by locking the snap-fit ​​seat with the buckle. This solves the technical problems in the existing flexible skin honeycomb structure, such as the hole connection between the skin and the honeycomb core destroying the integrity of the skin, the easy fall-off of the adhesive connection, the aging of the material caused by the hot pressing connection, and the inability to reuse.

[0016] 2. In the flexible skin honeycomb structure of this application embodiment, when connecting the skin to the honeycomb core, a vacuum device is first used to draw a vacuum so that the skin is stretched by atmospheric pressure and then attached to the inner wall of the glass cup of the vacuum device. Then, the elastic shrinkage of the skin is used to cover the connecting platform of the locking buckle. Then, the locking buckle covered with the skin is pressed into the slot of the honeycomb core. This can ensure the flatness of the skin after installation, and at the same time facilitate the accurate positioning and uniform adhesion of the skin on the honeycomb core. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the flexible skin honeycomb structure in an embodiment of this application;

[0019] Figure 2 This is a front sectional view of the flexible skin honeycomb structure according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the honeycomb core in the flexible skin honeycomb structure of this application embodiment;

[0021] Figure 4 for Figure 3 A magnified view of a section at point I;

[0022] Figure 5 This is a schematic diagram of the latch structure in the flexible skin honeycomb structure of this application embodiment;

[0023] Figure 6 This is a deformation diagram of the two components in the flexible skin honeycomb structure of this application during the process of the latch being inserted into the card holder;

[0024] Figure 7 A schematic diagram of the vacuum stretching assembly process for the skin;

[0025] Figure 8 After removing the screw Figure 7 Enlarged view of a section at point II;

[0026] Figure 9 This is a schematic diagram of the vacuum pumping device. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can refer to fixed connections, detachable connections, or integral connections; those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" can explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] Reference Figures 1 to 6 The embodiments of this application provide a flexible skin honeycomb structure, including a honeycomb core 1, a skin 2, and a locking buckle 3.

[0032] Reference Figure 3 The honeycomb core 1 includes a core body 11 and a plurality of bases 12 disposed on the core body 11. The plurality of bases 12 are arranged in an array on the core body 11. For example, the cross-section of the honeycomb core 1 is rectangular, and the number of bases 12 is five, of which four bases 12 are arranged in a rectangular array and are respectively close to the four corners of the honeycomb core 1, and the fifth base 12 is located at the center of the honeycomb core 1.

[0033] The core 11 includes a skin support portion 111 and a base support portion 112. The upper surface of the skin support portion 111 is higher than the upper surface of the base support portion 112. The lower surface of the base 12 is connected to the base support portion 112, and the upper surface is flush with the skin support portion 111.

[0034] Reference Figure 4 A mounting groove 121 is formed on the upper surface of the base 12. The surface of the mounting groove 121 is hemispherical, and the snap-fit ​​seat 122 is located at the center of the bottom of the mounting groove 121. The side surface of the snap-fit ​​seat 122 is cylindrical, and the two are smoothly transitioned by rounded corners. A cylindrical snap-fit ​​groove 123 is provided inside the snap-fit ​​seat 122, and the diameter of the opening of the cylindrical snap-fit ​​groove is smaller than the diameter of the groove body. The axes of the mounting groove 121, the snap-fit ​​seat 122, and the cylindrical snap-fit ​​groove 123 coincide.

[0035] Reference Figure 5 and Figure 6 The latch 3 includes a connecting platform 31 and a snap-fit ​​block 32 disposed at the bottom of the connecting platform 31. The axes of the connecting platform 31 and the snap-fit ​​block 32 coincide. The snap-fit ​​block 32 is adapted to the snap-fit ​​seat 122. After the snap-fit ​​block 32 is snapped into the snap-fit ​​seat 122, the upper surface of the connecting platform 31 is flush with the upper surface of the snap-fit ​​seat 122.

[0036] The connecting platform 31 is cylindrical. The ratio of the diameter of the connecting platform 31 to the maximum diameter of the snap-fit ​​block 32 is greater than 2.5, and the ratio of the thickness of the connecting platform 31 to its diameter is less than or equal to 1 / 8. The edges of the connecting platform 31 are provided with transition fillets, and the radius of the transition fillets is proportional to the thickness of the skin 2.

[0037] The snap-fit ​​block 32 includes an inverted frustum-shaped snap-fit ​​section 321 and a cylindrical transition section 322. The cylindrical transition section 322 is connected to the connecting platform 31. The inverted frustum-shaped snap-fit ​​section 321 has a taper of 30° to 60°, and its large end diameter is adapted to the groove diameter of the cylindrical snap-fit ​​groove 123, while its height is equal to the groove depth of the cylindrical snap-fit ​​groove 123. The end of the inverted frustum-shaped snap-fit ​​section 321 is provided with a threaded hole for connecting an external screw 5.

[0038] The diameter of the cylindrical transition section 322 is smaller than the large end diameter of the inverted frustum-shaped snap-fit ​​section 321, and is compatible with the opening diameter of the cylindrical snap-fit ​​groove 123.

[0039] After the latch 3 is installed, the frustum-shaped locking section 321 is located inside the cylindrical slot 123, and the cylindrical transition section 322 is located at the opening of the cylindrical slot 123. When the latch 3 is disassembled, the frustum-shaped locking section 321 can be dislodged from the cylindrical slot 123.

[0040] Both the honeycomb core 1 and the latch 3 are made using 3D printing.

[0041] Skin 2 is wrapped around connecting platform 31, and at least a portion of skin 2 is pressed between connecting platform 31 and the inner wall of mounting groove 121. Skin 2 is made of elastic materials such as silicone rubber, thermoplastic polyurethane, natural rubber / synthetic rubber, and their composite materials, and has no holes. In addition, skin 2 has a uniform thickness and no obvious defects or bubbles on the surface.

[0042] Reference Figures 7 to 8 On the other hand, embodiments of this application also provide a processing method based on the above-described flexible skin honeycomb structure, including the following steps:

[0043] Step 1: A vacuum is created using the vacuum pump 4, stretching the skin 2 and causing it to adhere to the inner wall of the glass cup 42 within the vacuum pump 4. (Refer to...) Figure 9 The vacuum device 4 includes a vacuum machine 41 and a glass cup 42. The glass cup 42 is placed on a support 43 with its opening facing upwards. The inner wall of the glass cup 42 has a polished surface, and its bottom is connected to the vacuum machine 41 via a pipeline 44. The mouth of the glass cup 42 has an annular groove, and a first annular magnet 45 is installed in the annular groove.

[0044] Step 11, refer to Figure 7 a. Cover the mouth of the glass 42 with the skin 2.

[0045] Step 12, refer to Figure 7 b. A second annular magnet 6 is disposed on the upper surface of the skin 2. The second annular magnet 6 has the same shape as the first annular magnet 45 but opposite magnetic properties. The second annular magnet 6 is magnetically fixed to the first annular magnet 45 disposed at the mouth of the glass cup 42. Both the second annular magnet 6 and the first annular magnet 45 are made of corrosion-resistant permanent magnets, thus ensuring that the skin 2 is firmly fixed to the glass cup 2.

[0046] Step 13, refer to Figure 7 c and 7d, by using vacuum pumping device 4 to create a vacuum, the skin 2 is stretched and attached to the inner wall of glass cup 42 under atmospheric pressure.

[0047] Step 2, refer to Figure 7 e and 7f invert the latch 3 and place it at the bottom of the glass 42 and fix it in place. Then release the vacuum state, so that the skin 2 elastically contracts and covers the connecting platform 31.

[0048] Specifically, first screw 5 into the threaded hole of the lock 3, and fix the lock 3 upside down to the bottom of the glass cup 42 by screw 5. Then, remove the second annular magnet 6 on the upper surface of the skin 2 to release the vacuum state, so that the skin 2 elastically contracts and covers the connecting platform 31.

[0049] Step 3, refer to Figure 7 g and 7h, remove the connecting platform 31 covered with skin 2, and remove the screw 5. Then, insert the connecting platform 31 into the locking seat 12 inside the core 11 to achieve mechanical locking.

[0050] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A flexible skin honeycomb structure, characterized in that, It includes a honeycomb core, a skin, and a latch; the honeycomb core includes a core body and multiple bases disposed on the core body; the core body includes a skin support portion and a base support portion; The lower surface of the base is connected to the base support part, and the upper surface is flush with the skin support part; An installation groove is formed on the upper surface of the base; a snap-fit ​​seat is provided in the installation groove; the latch includes a connecting platform and a snap-fit ​​block set at the bottom of the connecting platform; the snap-fit ​​block is adapted to the snap-fit ​​seat; after the snap-fit ​​block is snapped into the snap-fit ​​seat, the upper surface of the connecting platform and the snap-fit ​​seat are flush; the skin is wrapped around the connecting platform, and at least a portion of the skin is pressed between the connecting platform and the inner wall of the installation groove; the skin is made of a highly elastic material.

2. The flexible skin honeycomb structure according to claim 1, characterized in that, The cross-section of the honeycomb core is rectangular; there are five bases, four of which are arranged in a rectangular array and are located near the four corners of the honeycomb core, and the fifth base is located at the center of the honeycomb core.

3. The flexible skin honeycomb structure according to claim 1, characterized in that, The surface of the mounting groove is hemispherical, the snap-fit ​​seat is located at the center of the bottom of the mounting groove, the side of the snap-fit ​​seat is cylindrical, and the two are smoothly transitioned by rounded corners.

4. The flexible skin honeycomb structure according to claim 1, characterized in that, The snap-fit ​​block includes an inverted frustum-shaped snap-fit ​​section and a cylindrical transition section; the cylindrical transition section is connected to the connecting platform, and the diameter of the cylindrical transition section is smaller than the large end diameter of the inverted frustum-shaped snap-fit ​​section; the snap-fit ​​seat has a cylindrical slot, the diameter of the opening of the cylindrical slot is smaller than the diameter of the slot body, and it matches the diameter of the cylindrical transition section of the snap-fit ​​block; after the latch is installed, the inverted frustum-shaped snap-fit ​​section is located in the cylindrical slot, and the cylindrical transition section is located at the opening of the cylindrical slot; when the latch is disassembled, the inverted frustum-shaped snap-fit ​​section can be disengaged from the cylindrical slot.

5. The flexible skin honeycomb structure according to claim 4, characterized in that, The taper of the inverted frustum-shaped locking section is 30° to 60°, and its large end diameter is adapted to the groove diameter of the cylindrical locking groove, and its height is equal to the groove depth of the cylindrical locking groove.

6. The flexible skin honeycomb structure according to claim 4, characterized in that, The end of the frustum-shaped snap-fit ​​section is provided with a threaded hole.

7. The flexible skin honeycomb structure according to claim 1, characterized in that, Both the honeycomb core and the latch are made using 3D printing.

8. A processing method based on the flexible skin honeycomb structure according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1. The skin is stretched by atmospheric pressure and attached to the inner wall of the glass cup of the vacuum device by a vacuum pump. The vacuum device includes a vacuum machine and a glass cup. The opening of the glass cup faces upward. The mouth of the glass cup is equipped with a first ring magnet. The bottom of the glass cup is connected to the vacuum machine through a pipeline. S2. Place the buckle upside down into the bottom of the glass and secure it. Then release the vacuum and allow the skin to elastically contract and cover the connecting platform. S3. Remove the connecting platform covered with the skin and insert it into the locking seat inside the core to achieve mechanical locking.

9. The processing method according to claim 8, characterized in that, The skin covers the glass cup, and a second ring magnet is provided on the upper surface of the skin; the second ring magnet has the same shape as the first ring magnet but opposite magnetic properties; after the glass cup is evacuated, the skin is stretched and adheres to the inner wall of the cup by atmospheric pressure.

10. The processing method according to claim 8, characterized in that, The bottom surface of the latch is provided with a threaded hole; the screw is screwed into the threaded hole, and the latch is fixed upside down to the bottom of the glass cup by the screw.

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