Multilayer insulation assembly with integrated microconnectors and method of making same
By using micro-connectors and sleeve-guided implantation technology, the problems of foreign object contamination and reduced thermal insulation performance of multi-layer thermal insulation components in spacecraft have been solved, achieving higher thermal insulation efficiency and surface smoothness, making it suitable for multi-layer thermal insulation components in spacecraft.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-21
AI Technical Summary
Existing multi-layer thermal insulation components in spacecraft have problems such as high risk of foreign object contamination, reduced thermal insulation performance and poor surface flatness, mainly due to fiber shedding caused by traditional sewing threads, thermal bridging of through sewing threads and light leakage through pinholes.
Miniature connectors are used instead of traditional long-thread sewing. Combining sealing and bonding processes, miniature connectors with rebound self-locking function and sleeve-guided implantation process are used to ensure mechanical locking and flatness between membrane layers, and puncture holes are sealed with sealing tape.
It effectively reduces the risk of contamination from foreign matter and heat leakage, improves thermal insulation performance and surface smoothness, and is suitable for high-cleanliness environments.
Smart Images
Figure CN122211010B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of aerospace thermal control technology, and in particular relates to a multi-layer thermal insulation component with integrated micro connectors and its manufacturing method. Background Technology
[0002] Multi-Layer Insulation (MLI) is a key component of the thermal control subsystem of spacecraft (such as satellites, space stations, and deep space probes). It is used to block radiative heat transfer in a vacuum environment and maintain the temperature level of internal equipment. MLI is typically composed of alternating layers of reflective panels (such as aluminized films) and spacer layers (such as polyester mesh). It needs to be cut and secured according to the shape of the equipment being covered. The specific manufacturing method involves cutting and stacking the reflective panels and spacer layers, then sewing the edges together with nylon or polyester thread. To fix the shape of the component, stitching is usually done through the center area. The Velcro fasteners used to secure the MLI to the satellite surface are also sewn directly onto the outermost layer of the MLI, and finally, tape is used to cover the stitches. However, this manufacturing method has the following drawbacks: 1. High risk of contamination from foreign matter. Sewing thread itself is made of twisted fibers, and during the sewing process, cutting and rubbing the film can easily cause fibers to shed. If these micro-dust particles (foreign matter) float in a microgravity environment, they can adhere to the surface of optical lenses or precision sensors, leading to load failure.
[0003] 2. Decreased thermal insulation performance (heat leakage). Dense, through-hole stitching forms a "thermal bridge," directly transferring external heat to the interior; and the pinholes cause light leakage, reducing the effective emissivity of the component.
[0004] 3. Poor surface flatness. Tightening the sewing thread can easily cause the film to wrinkle, affecting the appearance of the component and its adhesion to the spacecraft surface. Summary of the Invention
[0005] In view of this, the present invention aims to provide a multi-layer thermal insulation component with integrated micro-connectors and its manufacturing method. The micro-connectors replace traditional long-thread sewing, and together with sealing and adhesive processes, the problem of contamination by excess material is solved, heat leakage is reduced, and the risk of light leakage and dust emission is effectively reduced.
[0006] To achieve the above objectives, the technical solution created by this invention is implemented as follows: A multilayer thermal insulation component integrating micro-connectors includes a membrane unit for blocking heat transfer from the external environment to achieve thermal insulation and temperature control. The membrane unit includes an outer thin film, an inner thin film, and a reflective screen and a spacer layer alternately stacked between the outer and inner thin films. The multilayer thermal insulation component also includes: At least one micro-connector is used to mechanically lock through the membrane unit. The micro-connector includes a rod, a head limiting member at the top of the rod, and a self-locking member at the bottom of the rod. The outer peripheral wall of the rod is provided with an array of barbs. The self-locking member and / or the barbs are elastic. They are constrained and retracted during puncture and spring back to their original position after being released from the constraint. The head limiting member is used to abut or lock onto the outer surface of the outer membrane. Sealing tape, which is applied to the outer and / or inner surfaces of the head limiting member and the outer and / or inner surfaces of the self-locking member, is used to seal the puncture hole and prevent the micro-connector from falling off.
[0007] Furthermore, an external fixing component is fixed to the outer surface of the sealing tape and / or the outer surface of the outer film through an adhesive layer. The external fixing component is used to fix the multilayer thermal insulation component to the surface of the thermal insulation object.
[0008] Furthermore, the external fastening components are Velcro, Hook and loop fasteners, or buckle bases; the adhesive layer is pressure-sensitive adhesive, structural adhesive, or double-sided tape.
[0009] Furthermore, a protective cap is provided on the outside of the self-locking component to protect it and prevent it from retracting.
[0010] Furthermore, the head limiting component is a flat structure that is circular, elliptical, or rectangular, with a radial dimension larger than the diameter of the rod.
[0011] Furthermore, the self-locking component is an inverted frustum, arrowhead, or multi-lobed elastic claw structure, which has a piercing guide surface facing the bottom and a backstopping surface facing the top; the backstopping surface is a plane or an inclined plane, forming a flat limiting structure at the lower end; the equivalent radial dimension of the backstopping surface is greater than the diameter of the rod.
[0012] Furthermore, the micro connectors are made of polyetheretherketone, polyphenylene sulfide, polyimide, polyetherimide, or polytetrafluoroethylene.
[0013] Furthermore, the micro-connectors are arranged in a discrete matrix within the membrane unit, with a spacing of 10mm to 50mm; the micro-connectors are densely arranged in the edge area of the membrane unit or the area where the external fixing components are installed, with a spacing of 5mm to 20mm.
[0014] A method for manufacturing a multilayer thermal insulation component with integrated micro-connectors, for manufacturing the aforementioned multilayer thermal insulation component, includes the following steps: S1: The cut reflective screen and spacer layer are stacked alternately and placed between the outer and inner thin films to form the film system unit to be processed; S2: The micro-connector is implanted into the membrane unit using a cannula-guided implantation process and then spring-locked in place. S3: Apply sealing tape to the outer and / or inner surfaces of the head limiting component and to the outer and / or inner surfaces of the self-locking component to seal the puncture hole and prevent the micro connector from falling off. S4: Secure the external fastening components to the outer surface of the sealing tape and / or the outer surface of the outer film by means of an adhesive layer.
[0015] Furthermore, the cannula-guided implantation process in step S2 includes the following steps: S21: Use a nailing tool to vertically penetrate the hollow sleeve into the membrane unit; S22: The rod and self-locking part of the miniature connector are pre-placed inside the hollow sleeve. The self-locking part and / or barb structure are constrained and retracted by the inner wall of the hollow sleeve. The head limiting part of the miniature connector is located on the outside of the proximal end of the hollow sleeve or is limited by a nailing tool. S23: Use the push rod to hold the micro connector in place, while the hollow sleeve retracts or pushes the micro connector out of the hollow sleeve; after the micro connector is freed from the constraint of the hollow sleeve, the head limiting member abuts against the outer surface of the outer film to form an upper limit, and the self-locking member and / or barb structure spring back to reset, thereby achieving mechanical locking of the membrane unit.
[0016] Compared with the prior art, the present invention can achieve the following beneficial effects: (1) This invention solves the problem of contamination by integrating a micro connector with a rebound self-locking function to replace the traditional long-line sewing to fix the MLI, and reduces heat leakage; the barb structure with a rebound function of the micro connector realizes the in-situ limitation between the membrane layers of the membrane unit, improves the vibration resistance of the MLI, and the sealing tape covers the two implantation points of the micro connector on the outer and inner membrane layers, effectively reducing the risk of light leakage and dust emission, and preventing the micro connector from falling off, making it more suitable for high-cleanliness use environments.
[0017] (2) The present invention uses a cannula-guided implantation process to implant the micro connector into the membrane unit, which solves the problem of dragging and tearing of the soft film caused by the direct puncture of the membrane unit by the micro connector with barbed structure, and ensures the flatness between the membrane layers of the membrane unit.
[0018] (3) The present invention fixes the external fixing components to the outer surface of the sealing tape or the outer film of the membrane unit through the adhesive layer, avoiding the new thermal bridges and dust generation points generated by re-penetrating the membrane unit, and reducing the dust generation rate and heat leakage risk. Attached Figure Description
[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 A cross-sectional schematic diagram of the multilayer thermal insulation assembly with integrated micro connectors as described in the embodiments of the present invention; Figure 2 A schematic diagram of the micro connector structure described in the embodiment of the present invention; Figure 3 A schematic flowchart illustrating the manufacturing method of the multilayer thermal insulation assembly with integrated micro connectors as described in the embodiments of the present invention.
[0020] Explanation of reference numerals in the attached figures: 1. Membrane unit; 11. Outer film; 12. Reflector; 13. Spacer layer; 14. Inner film; 2. Micro connector; 21. Rod; 22. Head limiter; 23. Self-locking component; 24. Barb structure; 25. Protective cap; 3. Sealing tape; 4. Adhesive layer; 5. External fixing component. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.
[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0025] The invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0026] like Figures 1 to 2 As shown, the multilayer thermal insulation assembly with integrated micro-connectors in this embodiment includes: a membrane unit 1, a micro-connector 2, a sealing tape 3, an adhesive layer 4, and an external fixing assembly 5.
[0027] The membrane unit 1 is used to block the heat transfer from the external environment and achieve heat insulation and temperature control. The membrane unit 1 includes an outer thin film 11 and an inner thin film 14, as well as a reflective screen 12 and a spacer layer 13 that are alternately stacked between the outer thin film 11 and the inner thin film 14.
[0028] The outer film 11 is a polyimide film, polyester film, or metallized film with a thickness of about 50 μm; the reflector 12 is a double-sided aluminized polyester film with about 5 to 30 layers, preferably 10 to 25 layers; the spacer layer 13 is a polyester mesh used to prevent the reflectors 12 from contacting each other; the inner film 14 is a polyimide film or polyester film.
[0029] At least one micro-connector 2 is used to mechanically lock through the membrane unit 1. The micro-connector 2 includes a rod 21, a head limiting member 22 located at the top of the rod 21, and a self-locking member 23 located at the bottom of the rod 21. The outer peripheral wall of the rod 21 is provided with an array of barbed structures 24. The self-locking member 23 and / or the barbed structures 24 are both elastic, and are constrained and retracted during the piercing process, and spring back to their original position after being released from the constraint. The head limiting member 22 is used to abut or lock onto the outer surface of the outer film 11.
[0030] In the micro connector 2, the diameter of the rod 21 can be 0.3mm~1.5mm, preferably 0.5mm~1.0mm. The outer peripheral wall of the rod 21 is provided with an array of barb structures 24. Utilizing the material elasticity of the barb structure 24, the barbs spring open after the micro connector 2 is implanted into the membrane unit 1. At the same time, the barb structure 24 also has anti-slip texture, realizing in-situ layering and limiting between the membrane layers of the membrane unit 1. The head limiting member 22 has a flat structure that is circular, elliptical or rectangular, and its radial dimension is larger than the diameter of the rod 21, which can be 2 to 8 times the diameter of the rod 21, preferably 3 to 6 times. After the head limiting member 22 springs open, it is stuck on the outer surface of the outer film 11.
[0031] The self-locking member 23 is shaped like an inverted frustum, an arrowhead, or a multi-lobed elastic claw. It has a piercing guide surface facing the bottom and a stop-blocking surface facing the top. The stop-blocking surface is either flat or inclined, with the inclined surface approaching a flat surface, forming a flat limiting structure at the lower end. The equivalent radial dimension of the stop-blocking surface is larger than the diameter of the rod 21, which can be 1.5 to 5 times the diameter of the rod 21, preferably 2 to 4 times. After the self-locking member 23 springs open, it is locked onto the outer surface of the inner film 14. A protective cap 25 is provided on the outside of the self-locking member 23 to protect the self-locking member 23 and prevent it from retracting.
[0032] In some embodiments, the edges of the head limiting member 22 and the self-locking member 23 are preferably provided with rounded corners or chamfers to reduce the risk of cutting the membrane unit 1.
[0033] In some embodiments, to control thermal bridging, the micro-connector 2 is made of a low-exhaust, heat-resistant, vacuum-resistant, and low-thermal-conductivity material such as polyetheretherketone, polyphenylene sulfide, polyimide, polyetherimide, or polytetrafluoroethylene. In some non-preferred embodiments, some components of the micro-connector 2 may also be made of a metal sheet or a metal elastic claw structure with elastic deformation capability, but the thermal bridging effect should be controlled by reducing the cross-sectional area, providing thermal insulation structures, or limiting the spacing between the points.
[0034] In some embodiments, the micro connectors 2 are distributed in a discrete dot matrix within the membrane unit 1, with a dot spacing ranging from 10mm to 50mm, preferably from 15mm to 30mm; the dots can be densely distributed in the edge area of the membrane unit 1 or the mounting area of the external fixing component 5, with a dot spacing ranging from 5mm to 20mm, to improve the shape retention and vibration resistance reliability of the membrane unit 1.
[0035] This embodiment solves the problem of contamination from excess material and reduces heat leakage by integrating a miniature connector 2 with a spring-loaded self-locking function to replace the traditional long-thread sewing for fixing the MLI. The barb structure 24 with a spring-loaded function in the miniature connector 2 enables in-situ positioning between the membrane layers of the membrane unit 1, improving the vibration resistance of the MLI.
[0036] Sealing tape 3 is attached to the outer and / or inner surfaces of the head limiting member 22 and the outer and / or inner surfaces of the self-locking member 23 to seal the puncture hole and prevent the micro connector 2 from falling off; an external fixing component 5 is fixed to the outer surface of the sealing tape 3 and / or the outer surface of the outer film 11 through the adhesive layer 4, and the external fixing component 5 is used to fix the multi-layer heat insulation component integrating the micro connector 2 to the surface of the heat insulation object.
[0037] The sealing tape 3 comprises a tape portion and an adhesive layer portion. The tape portion is a polyimide tape, aluminum foil tape, or metallized tape; the adhesive layer portion is an acrylic pressure-sensitive adhesive or a silicone-based adhesive, which must meet the requirements for low outgassing and temperature range. The sealing tape 3 at least covers the circumferential area of the puncture hole and the outer peripheral edges of the head limiting member 22 and the self-locking member 23. The thickness of the sealing tape 3 can be 25μm to 100μm.
[0038] This implementation effectively reduces the risk of light leakage and dust emission by covering the two implantation points of the micro connector 2 on the outer film 11 and the inner film 14 with sealing tape 3, and prevents the micro connector 2 from falling off, making it more suitable for high-cleanliness environments.
[0039] The external fixing component 5 is fixed to the outer surface of the sealing tape 3 and / or the outer film 11 by the adhesive layer 4. Preferably, it is fixed to the reinforcing area of the sealing tape 3 to avoid local peeling. The reinforcing area refers to a locally reinforced area provided on the outer surface of the outer film 11 to bear the adhesive load of the external fixing component 5. The reinforcing area can be formed by the sealing tape 3, reinforcing sheet, or multiple layers of overlapping tape, and at least covers the orthographic projection area of the external fixing component 5 on the outer surface of the membrane unit 1, and preferably extends outward by 2mm to 20mm from the outer periphery of the orthographic projection area. Local peeling refers to the local lifting, delamination, or delamination that occurs at the edges or corners of the external fixing component 5, or between the adhesive layer 4 and the sealing tape 3, or between the sealing tape 3 and the outer film 11, when the external fixing component 5 is subjected to tensile, shear, or vibration loads. The external fixing component 5 is a Velcro fastener, Hook and loop fastener, or a buckle base; the adhesive layer 4 is a pressure-sensitive adhesive, structural adhesive, or double-sided tape. The external fixing component 5 is used to fix the MLI to the surface of the thermal insulation object.
[0040] In this embodiment, the external fixing component 5 is fixed to the outer surface of the sealing tape 3 or the outer film 11 by the adhesive layer 4, which avoids the new thermal bridges and dust generation points caused by the re-penetration of the membrane unit 1, and reduces the dust generation rate and the risk of heat leakage.
[0041] Accordingly, according to embodiments of the present invention, the present invention also provides a method for manufacturing a multilayer thermal insulation assembly with integrated micro-connectors, such as... Figure 3 As shown, combined with Figure 1 and Figure 2 This includes the following steps: S1: The cut reflective screen 12 and spacer layer 13 are stacked alternately and placed between the outer thin film 11 and the inner thin film 14 to form the film system unit 1 to be processed.
[0042] The cut reflective screen 12 and spacer layer 13 are stacked alternately and placed between the inner and outer thin films 11 to form the film system unit 1 to be processed. Positioning fixtures or temporary positioning points can be used during the stacking process to ensure the accuracy of the relative position between layers and the alignment of the edges.
[0043] S2: The micro-connector 2 is implanted into the membrane unit 1 using a cannula-guided implantation process and then spring-loaded and fixed.
[0044] To address the issues of high friction and easy displacement during puncture of soft materials, this embodiment employs a cannula-guided implantation process to implant the micro-connector 2 into the membrane unit 1, including the following steps: S21: Use a nailing tool to vertically penetrate the hollow sleeve into membrane unit 1. Because the front end surface of the hollow sleeve is extremely smooth and sharp, the membrane layers of membrane unit 1 will not be carried away or wrinkled, and will still maintain good interlayer distribution; S22: The rod portion 21 and the self-locking component 23 of the miniature connector 2 are pre-placed inside the hollow sleeve. The self-locking component 23 and / or the barb structure 24 are constrained and retracted by the inner wall of the hollow sleeve. The head limiting component 22 of the miniature connector 2 is located on the outside of the proximal end of the hollow sleeve or is limited by a nailing tool. S23: Use the push rod to hold the micro connector 2, while the hollow sleeve retracts or pushes the micro connector 2 out of the hollow sleeve; after the micro connector 2 is freed from the constraint of the hollow sleeve, the head limiting member 22 abuts against the outer surface of the outer film 11 to form an upper limit, and the self-locking member 23 and / or the barb structure 24 spring back to reset, thereby realizing the mechanical locking of the membrane unit 1.
[0045] Preferably, the inner diameter of the hollow sleeve and the outer diameter of the rod 21 of the micro connector 2 are in clearance fit. The inner diameter of the hollow sleeve can be 0.05mm to 0.30mm larger than the diameter of the rod 21 to ensure that the barb structure 24 can be reliably retracted and smoothly pushed out inside the hollow sleeve. The surface roughness of the hollow sleeve is preferably Ra≤0.2μm to reduce puncture friction and drag. The needle end of the hollow sleeve is used to penetrate the membrane unit 1. The needle end can be oblique or tapered, and the end angle can be 15° to 30° to reduce the probability of tearing the membrane. When the hollow sleeve is implanted, the nailing tool is perpendicular to the outer membrane 11 of the membrane unit 1 at an angle of 90°±10° to improve the consistency of the hole position and the reliability of the anti-retraction.
[0046] In this embodiment, a cannula-guided implantation process is used to implant the micro-connector 2 into the membrane unit 1, which solves the problem of dragging and tearing of the soft membrane caused by the micro-connector 2 with barbed structure 24 directly puncturing the membrane unit 1, and ensures the flatness between the membrane layers of the membrane unit 1.
[0047] S3: Apply sealing tape 3 to the outer and / or inner surface of the head limiting member 22 and to the outer and / or inner surface of the self-locking member 23 to seal the puncture hole and prevent the micro connector 2 from falling off.
[0048] Sealing tape 3 is applied to the outer and / or inner surfaces of the head limiting member 22 at the implantation point, as well as to the outer and / or inner surfaces of the self-locking member 23, to seal the puncture hole and prevent the micro-connector 2 from falling off. Sealing tape 3 or reinforcing sheets are applied simultaneously to the inner and outer surfaces to achieve double-sided sealing; or two layers of sealing tape 3 are applied to the outer surface to form a secondary reinforcement area.
[0049] S4: The external fixing component 5 is fixed on the outer surface of the sealing tape 3 and / or the outer surface of the outer film 11 by the adhesive layer 4.
[0050] In the reinforcing area of the sealing tape 3, the external fixing component 5 is fixed with pressure-sensitive adhesive. The installation process of the external fixing component 5 no longer penetrates the membrane unit 1, avoiding thermal bridging, light leakage, and dust generation points caused by the addition of a through hole.
[0051] It should be noted that, in addition to the hollow sleeve retraction release method, in an alternative embodiment, the self-locking member 23 and / or the barb structure 24 are covered with a temporary smooth coating layer. This temporary smooth coating layer covers the tip of the barb structure 24, forming a continuous smooth guide surface on the outer surface of the micro-connector 2. After the micro-connector 2 passes through the membrane unit 1, the temporary smooth coating layer is removed by heating and melting, solvent dissolution, or mechanical peeling, allowing the self-locking member 23 and / or the barb structure 24 to release and spring back to its original position. The material of the temporary smooth coating layer should meet the requirements of low residue, low outgassing, or complete removal before final assembly.
[0052] In another alternative embodiment, a peelable sleeve is provided on the outside of the self-locking member 23 and / or the barbed structure 24. The peelable sleeve has a weakening line or pre-cut slit extending axially and is provided with a traction end. After the micro connector 2 is in place, the traction end is pulled to cause the peelable sleeve to split along the weakening line and exit, thereby releasing the self-locking member 23 and / or the barbed structure 24.
[0053] In another alternative embodiment, a double-sleeve structure is adopted. The outer sleeve is used to penetrate the membrane unit 1 first, and the inner push rod or inner sleeve is used to push the micro connector 2. When the micro connector 2 reaches the predetermined position, the outer sleeve retracts relative to the inner push rod, so that the self-locking member 23 and / or the barb structure 24 gradually disengage from the constraint of the outer sleeve and spring back to reset.
[0054] The method for fabricating multilayer thermal insulation components with integrated micro-connectors in this embodiment produced multilayer thermal insulation components with 10-layer and 20-layer membrane units. These components passed sinusoidal vibration tests (simulating emission environments) and random vibration tests, with no micro-connectors detaching. Comparative testing in a thermal vacuum chamber showed that the MLI fabricated using this invention exhibited an effective emissivity improvement of approximately 10% to 15% compared to traditional sewn MLI. Foreign matter detection results showed a reduction of over 90% in the number of particles larger than 100 μm on the surface.
[0055] Furthermore, the micro-connectors in the multilayer thermal insulation assembly with integrated micro-connectors can be used not only for MLI, but also for interlayer connections of flexible solar wing protective layers and flexible walls of inflatable spacecraft.
[0056] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this invention disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this invention can be achieved, and this is not limited herein.
[0057] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A multilayer thermal insulation component integrating micro-connectors, comprising a membrane unit for blocking heat transfer from the external environment to achieve thermal insulation and temperature control, wherein the membrane unit comprises an outer thin film and an inner thin film, and a reflective screen and a spacer layer alternately stacked between the outer and inner thin films, characterized in that, The multi-layer thermal insulation assembly also includes: At least one micro-connector is provided for mechanically locking through the membrane unit. The micro-connector includes a rod, a head limiting member at the top of the rod, and a self-locking member at the bottom of the rod. The outer peripheral wall of the rod is provided with an array of barbs. The self-locking member and / or the barbs are elastic, constricted during piercing, and spring back to their original position after being released from constraint. The head limiting member is used to abut or lock against the outer surface of the outer membrane. The self-locking member springs open and locks against the outer surface of the inner membrane. Sealing tape, which is adhered to the outer and / or inner surfaces of the head limiting member and the outer and / or inner surfaces of the self-locking member, is used to seal the puncture hole and prevent the micro-connector from falling off.
2. The multilayer thermal insulation assembly with integrated micro-connectors according to claim 1, characterized in that, The outer surface of the sealing tape and / or the outer surface of the outer film are fixed with an external fixing component through an adhesive layer. The external fixing component is used to fix the multilayer heat insulation component to the surface of the heat insulation object.
3. The multilayer thermal insulation assembly with integrated micro-connectors according to claim 2, characterized in that, The external fastening components are Velcro, Hook and loop fasteners, or buckle bases; the adhesive layer is pressure-sensitive adhesive, structural adhesive, or double-sided tape.
4. The multilayer thermal insulation assembly with integrated micro-connectors according to claim 1, characterized in that, The self-locking component is provided with a protective cap to protect it and prevent it from retracting.
5. The multilayer thermal insulation assembly with integrated micro-connectors according to claim 1, characterized in that, The head limiting member is a flat structure that is circular, elliptical, or rectangular, and its radial dimension is larger than the diameter of the rod.
6. The multilayer thermal insulation assembly with integrated micro-connectors according to claim 1, characterized in that, The self-locking component is an inverted frustum, arrowhead, or multi-lobed elastic claw structure, having a piercing guide surface facing the bottom and a backstopping surface facing the top; the backstopping surface is a plane or an inclined plane, forming a lower flat limiting structure; the equivalent radial dimension of the backstopping surface is greater than the diameter of the rod.
7. The multilayer thermal insulation assembly with integrated micro-connectors according to claim 1, characterized in that, The micro connector is made of polyetheretherketone, polyphenylene sulfide, polyimide, polyetherimide or polytetrafluoroethylene.
8. The multilayer thermal insulation assembly with integrated micro-connectors according to claim 2, characterized in that, The micro connectors are arranged in a discrete matrix within the membrane unit, with a spacing of 10mm to 50mm; the connectors are densely arranged in the edging area of the membrane unit or the mounting area of the external fixing components, with a spacing of 5mm to 20mm.
9. A method for manufacturing a multilayer thermal insulation component with integrated micro-connectors, used to manufacture the multilayer thermal insulation component according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1: The cut reflective screen and spacer layer are stacked alternately and placed between the outer and inner thin films to form the film system unit to be processed; S2: The micro-connector is implanted into the membrane unit using a cannula-guided implantation process and then spring-loaded and fixed. S3: Apply sealing tape to the outer and / or inner surfaces of the head limiting member and the outer and / or inner surfaces of the self-locking member to seal the puncture hole and prevent the micro connector from falling off; S4: An external fixing component is fixed to the outer surface of the sealing tape and / or the outer surface of the outer film by means of an adhesive layer. The external fixing component is used to fix the multilayer heat insulation component to the surface of the heat insulation object.
10. The method for manufacturing a multilayer thermal insulation assembly with integrated micro-connectors according to claim 9, characterized in that, The cannula-guided implantation process in step S2 includes the following steps: S21: Use a nailing tool to vertically penetrate the hollow sleeve through the membrane unit; S22: The rod and self-locking part of the micro connector are pre-placed inside the hollow sleeve. The self-locking part and / or barb structure are constrained and closed by the inner wall of the hollow sleeve. The head limiting part of the micro connector is located on the outside of the proximal end of the hollow sleeve or is limited by a nailing tool. S23: The push rod is used to hold the micro connector in place, while the hollow sleeve is retracted or the micro connector is pushed out of the hollow sleeve; after the micro connector is freed from the constraint of the hollow sleeve, the head limiting member abuts against the outer surface of the outer film to form an upper limit, and the self-locking member and / or barb structure spring back to reset, thereby realizing the mechanical locking of the membrane unit.