Composite material sealing structure with controllable compression amount
Through the composite material design of metal elastic structure, deformation limit structure and silicon rubber sealing layer, the shortcomings of traditional sealing structure in terms of high strength sealing and rebound are solved, and the combination of high sealing and high rebounding is achieved, and the reliability and service life of the sealing structure are improved.
Patent Information
- Application Number
- CN202422594905.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-25
AI Technical Summary
Traditional sealing structures have shortcomings in high-strength sealing and resilience. The polymer sealing strips are easy to damage, the metal sealing strips are costly and difficult to reuse, the fiber sealing structure has poor wear resistance, and the deformation rebound and controllability are poor, making it difficult to generalize mechanical structures.
The composite material design is adopted for metal elastic structure, deformation limit structure and silicon rubber sealing layer. The metal elastic structure folds and rebounds when compressed. The deformation limit structure controls the compression amount and is wrapped in silicon rubber layer to improve rebound performance and strength.
The combination of high sealing and high resilience is achieved, avoiding damage to the sealing structure due to excessive compression, and improving reliability and service life.
Smart Images
Figure CN223136932U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing structures, in particular to a compression amount controllable composite material sealing structure. Background Technique
[0002] In the industrial field and aerospace engineering, due to the need to isolate or weaken the influence of the external environment for movable or detachable components, sealing structures are required.
[0003] Traditional sealing structures usually adopt polymer or rubber elastic sealing strips, metal elastic / plastic deformation sealing strips, fiber structures, composite materials or mechanical structures.
[0004] However, polymer or rubber elastic sealing strips have low strength and are prone to damage to the seals during large sealing deformations; metal elastic / plastic deformation sealing strips have high processing precision, are difficult to reuse after plastic deformation, and have high costs; fiber sealing structures have poor wear resistance, high material permeability, and poor deformation resilience and controllability; mechanical structure sealing structures are generally designed for special structures and are difficult to be generalized.
[0005] Therefore, a new type of composite material sealing structure with high sealing performance and high resilience is needed. Summary of the Utility Model
[0006] The content part of the utility model is used to briefly introduce the concepts, which will be described in detail in the following specific implementation part. The content part of this disclosure is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.
[0007] The utility model provides a compression amount controllable composite material sealing structure to solve the technical problems mentioned in the above background technique part.
[0008] The compression amount controllable composite material sealing structure includes a metal elastic structure, a deformation limiting structure, and a silicone rubber sealing layer for wrapping the above structures. Among them,
[0009] The metal elastic structure is formed by connecting a plurality of metal plates in a zigzag shape;
[0010] The deformation limiting structure includes a connecting limiting rod and a plurality of elastic strain limiting rods, and the plurality of elastic strain limiting rods are alternately connected to both ends of the connecting limiting rod at intervals along the length direction of the connecting limiting rod;
[0011] In the assembled state, the connecting limiting rod passes through the plurality of metal plates, and the open ends of the plurality of elastic strain limiting rods face away from the plurality of metal plates one by one.
[0012] Optionally, through holes are provided on each of the metal plates, and the connecting limit rods pass through a plurality of the through holes.
[0013] Optionally, the folding angle between adjacent metal plates is 60°.
[0014] Optionally, the plurality of metal plates are integrally manufactured.
[0015] Optionally, the compression elastic deformation rate of the metal elastic structure is 20%-70%, and the compression resilience rate is not less than 90%.
[0016] Optionally, the metal elastic structure is made of one of the following: copper and its alloys, titanium alloys, steels and ferroalloys, nickel-based superalloys, niobium-based superalloys, molybdenum-based refractory alloys.
[0017] Optionally, the width of the deformation limiting structure accounts for 60% of the width of the silicone rubber sealing layer.
[0018] Optionally, the deformation limiting structure is made of one of the following: stainless steel, ferroalloy, titanium alloy, corundum.
[0019] Optionally, the moisture permeability of the silicone rubber sealing layer is 1-10g / m 2 / 24hour, the elongation at break is 100% - 300%, and the compression resilience rate is not less than 50%.
[0020] Optionally, the silicone rubber sealing layer is made of one of the following: heat vulcanized silicone rubber, methyl silicone rubber, methyl vinyl silicone rubber, phenolphthalein silicone rubber, fluorosilicone rubber.
[0021] The above embodiments of the present utility model have the following beneficial effects: Through the compression amount controllable composite material sealing structure of some embodiments of the present utility model, the disadvantages of the traditional sealing structure that are difficult to balance the permeability, resilience, and compression amount control are overcome, and the overall structure is relatively compact, simple and easy to use.
[0022] Specifically, by wrapping the above metal elastic structure with a silicone rubber sealing layer, during the compression process, the metal elastic structure is compressed synchronously, the folding angle becomes smaller, and a resilience force is formed. During the rebound process, the metal elastic structure opens under the action of the resilience force, and the folding angle gradually increases, thereby improving the rebound performance of the sealing structure.
[0023] Furthermore, the above deformation limiting structure can improve the strength of the sealing structure in the width direction, and further limit the deformation amount of the sealing structure, thereby achieving the effect of controlling the compression amount of the sealing structure, effectively avoiding the situation that the sealing structure is squeezed and damaged, and improving the reliability of the sealing structure. Description of the Drawings
[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0025] Figure 1 FIG. is a schematic structural diagram of an embodiment of the compression amount controllable composite material sealing structure of the present invention;
[0026] Figure 2 FIG. is a schematic structural diagram of an embodiment of the metal elastic structure and the deformation limiting structure of the present invention;
[0027] Figure 3 FIG. is a schematic structural diagram of an embodiment of the metal elastic structure of the present invention;
[0028] Figure 4 FIG. is a schematic structural diagram of an embodiment of the deformation limiting structure of the present invention.
[0029] Description of the reference numerals:
[0030] 1. Silicone rubber sealing layer; 2. Metal elastic structure; 21. Through hole;
[0031] 3. Deformation limiting structure; 31. Elastic strain limiting rod; 32. Connecting limiting rod. Specific embodiments
[0032] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined. In addition, the terms "installed", "connected", and "joined" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.
[0036] First, please refer to Figure 1 , Figure 1 , which is a schematic structural view of an embodiment of the compression amount controllable composite material sealing structure of the present utility model. As Figure 1 shown, the compression amount controllable composite material sealing structure may include a metal elastic structure 2, a deformation limit structure 3, and a silicone rubber sealing layer 1 that wraps the above-mentioned metal elastic structure 2 and deformation limit structure 3.
[0037] Next, in conjunction with Figure 2 and Figure 3 , the metal elastic structure 2 will be described. Figure 2 is a schematic structural view of an embodiment of the metal elastic structure and deformation limit structure of the present utility model; Figure 3 is a schematic structural view of an embodiment of the metal elastic structure of the present utility model. As Figure 2 and Figure 3 shown, the metal elastic structure 2 is formed by connecting a plurality of metal plates in a zigzag shape, and the included angle between adjacent metal plates faces the front and back sides of the silicone rubber sealing layer 1 ( Figure 1 the direction in). In some alternative implementation manners, the above-mentioned metal elastic structure 2 may also be formed by folding a whole metal plate, and the folding angle of adjacent folding edges may be 60°. Of course, those skilled in the art can adjust the folding angle according to actual situations.
[0038] The compression elastic deformation rate of the metal elastic structure 2 is 20%-70%, and the compression resilience rate is not less than 90%. The above-mentioned metal plates can be made of materials including but not limited to the following: copper and its alloys, titanium alloys, steel and iron alloys, nickel-based superalloys, niobium-based superalloys, molybdenum-based refractory alloys, etc.
[0039] The metal elastic structure 2 is wrapped in the silicone rubber sealing layer 1. During the compression process, the metal elastic structure 2 is compressed synchronously, and the folding angle becomes smaller, thereby forming a rebound force. During the rebound process, the metal elastic structure 2 opens under the action of the rebound force, and the folding angle gradually increases, thereby improving the rebound performance of the sealing structure.
[0040] Next, combine Figure 4 The deformation limiting structure 3 is described. Figure 4 FIG. 1 is a schematic diagram of a structure of an embodiment of the deformation limiting structure of the utility model. Figure 4 As shown, the deformation limiting structure 3 includes a connecting limiting rod 32 and a plurality of elastic strain limiting rods 31. The plurality of elastic strain limiting rods 31 are staggeredly connected to the front and rear ends of the connecting limiting rod 32 along the length direction of the connecting limiting rod 32 ( Figure 4 direction in the middle).
[0041] In the assembled state, the connection limit rod 32 passes through the metal elastic structure 2. Optionally, the metal elastic structure 2 may be provided with through holes 21 on the multiple metal plates included after folding, and the connection limit rod 32 passes through the through holes 21. The open ends of the staggered elastic strain limit rods 31 are correspondingly away from the corresponding metal plates and point to the front and rear sides of the silicone rubber sealing layer 1 ( Figure 1 The deformation limiting structure 3 may be made of metal or ceramic materials with good rigidity, including but not limited to stainless steel, iron alloy, titanium alloy, corundum, etc.
[0042] During the compression process, the above-mentioned deformation limiting structure 3 can increase the strength of the sealing structure in the width direction, and then limit the deformation of the sealing structure, so as to achieve the effect of controlling the compression amount of the sealing structure, which can effectively avoid the sealing structure from being squeezed and damaged, and improve the reliability of the sealing structure.
[0043] The moisture permeability of the silicone rubber sealing layer 1 is 1-10g / m 2 / 24hour, elongation at break is 100% to 300%, and compression rebound rate is not less than 50%. The silicone rubber sealing layer 1 is made of one of the following: heat-vulcanized silicone rubber, methyl silicone rubber, methyl vinyl silicone rubber, phenolphthalein silicone rubber, fluorosilicone rubber, using a single-component or two-component heat vulcanization or room temperature vulcanization process. The metal elastic structure 2 and the deformation limiting structure 3 can be assembled and placed in a mold, and then silicone rubber is injected. After vulcanization and demolding, a silicone rubber sealing layer 1 is formed to wrap the above-mentioned metal elastic structure 2 and the deformation limiting structure 3.
[0044] Finally, the molding process of the sealing structure is described in a specific implementation manner.
[0045] First, select a 304 stainless steel thin plate with a thickness of 0.1 mm and fold it into a zigzag shape to form the metal elastic structure 2, with a folding angle of 60°. The width corresponding to each folding angle is 10 mm. Determine two adjacent folding edges as a unit, with a total of 30 units. And 3 mm×3 mm through holes 21 are opened in the middle of each folding edge.
[0046] Next, select a 304 stainless steel rod with a square cross-section of 300 mm×2.5 mm×2.5 mm as the connecting limit rod 32. Select a 304 stainless steel rod with a square cross-section of 2.5 mm×2.5 mm×2.5 mm as the elastic strain limit rod 31. And assemble the above metal elastic structure 2 and the deformation limit structure 3.
[0047] Finally, select room temperature vulcanized heat-resistant silicone rubber with the brand number 107 as the material for making the above silicone rubber sealing layer 1. Put the assembled metal elastic structure 2 and the deformation limit structure 3 into a mold, and the volume of the mold after plasticity meets the net size of 300 mm×10 mm×10 mm. After injecting silicone rubber and vulcanizing and demolding, the sealing structure can be obtained.
[0048] After testing, the apparent density of this sealing structure is 0.62 g / cm3, the compression rate is 25.2%, and the rebound rate is 92%. The compression rate after repeated compression 1000 times is 26.3%, and the rebound rate is 88.2%. Therefore, this sealing structure has both high sealing performance and high resilience.
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A compression amount controllable composite material sealing structure, characterized in that It includes a metal elastic structure, a deformation limiting structure, and a silicone rubber sealing layer for wrapping the above structures. Among them, the metal elastic structure is formed by connecting multiple metal plates in a zigzag shape; the deformation limiting structure includes a connecting limiting rod and multiple elastic strain limiting rods, and the multiple elastic strain limiting rods are alternately connected to both ends of the connecting limiting rod at intervals along the length direction of the connecting limiting rod; in the assembled state, the connecting limiting rod passes through the multiple metal plates, and the open ends of the multiple elastic strain limiting rods face away from the multiple metal plates one by one.
2. The compression amount controllable composite material sealing structure according to claim 1, characterized in that, Each of the metal plates is provided with a through hole, and the connecting limiting rod passes through the multiple through holes.
3. The compression amount controllable composite material sealing structure according to claim 2, characterized in that, The folding angle between adjacent metal plates is 60°.
4. The compression amount controllable composite material sealing structure according to claim 3, characterized in that, The multiple metal plates are integrally manufactured.
5. The compression amount controllable composite material sealing structure according to claim 4, characterized in that, The compression elastic deformation rate of the metal elastic structure is 20%-70%, and the compression resilience rate is not less than 90%.
6. The compression amount controllable composite material sealing structure according to claim 5, characterized in that The metal elastic structure is made of one of the following: copper and its alloys, titanium alloys, steels and ferroalloys, nickel-based superalloys, niobium-based superalloys, molybdenum-based refractory alloys.
7. The compression amount controllable composite material sealing structure according to claim 1, characterized in that, The width of the deformation limiting structure accounts for 60% of the width of the silicone rubber sealing layer.
8. The compression amount controllable composite material sealing structure according to claim 1, characterized in that, The deformation limiting structure is made of one of the following: stainless steel, ferroalloy, titanium alloy, corundum.
9. The compression amount controllable composite material sealing structure according to claim 1, characterized in that, The moisture permeability of the silicone rubber sealing layer is 1-10 g / m 2 / 24 hour, the elongation at break is 100% to 300%, and the compression set is not less than 50%.
10. The compression amount controllable composite material sealing structure according to claim 1, characterized in that, The silicone rubber sealing layer is made of one of the following: heat vulcanized silicone rubber, methyl silicone rubber, methyl vinyl silicone rubber, phenolphthalein silicone rubber, fluorosilicone rubber.