Three-layer heat shield structure
By designing a three-layer heat insulation cover structure, the outer cover layer and the heat insulation layer are interlocked by a slot and secured with straps, which solves the problem of the outer layer separating from the inner layer, achieves higher connection tightness and anti-displacement ability, and extends service life.
Patent Information
- Application Number
- CN202520524933.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The contact surface between the outer and inner insulation layers of the existing heat insulation cover is relatively smooth. As the usage time increases, it may detach, affecting normal use.
The design features a three-layer structure, including an insulation layer, an outer cover layer, and an inner cover layer. The outer cover layer has recessed grooves that face the inner cover layer and are fitted into the insulation layer. The outer cover layer is secured by straps wrapped around the grooves, which increases the contact area and friction resistance, preventing the layers from separating.
It significantly improves the tightness of the connection between the outer cover layer and the insulation layer, prevents interlayer separation caused by material aging or vibration, and enhances the structure's resistance to displacement and service life.
Smart Images
Figure CN223676366U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of heat shield, specifically to a three -layer heat shield structure. BACKGROUND
[0002] The exhaust pipe catalytic converter is a key component of the automobile exhaust system, and the internal chemical reaction will produce high temperature of hundreds of degrees Celsius when working, if not effectively blocked, may cause chassis circuit aging, vehicle body coating carbonization, even cause the surrounding flammable material fire and other problems.
[0003] In order to solve the above problems, the conventional method is to cover the heat shield on the outside of the catalytic converter, thereby significantly reducing the heat radiation of the catalytic converter to the surrounding environment. The heat shield is usually designed with a multi-layer composite structure, the outer layer is made of high-temperature-resistant stainless steel or aluminum metal plate, and the internal layer is made of high-efficiency heat insulation materials such as ceramic fiber and aerogel as the internal heat insulation layer. However, the contact surface between the outer layer and the internal heat insulation layer of the heat shield with such structure is relatively smooth, and with the increase of the use time, the outer layer and the heat insulation layer may be separated, affecting the normal use. SUMMARY
[0004] The utility model aims at solving the problem that the contact surface between the outer layer and the internal heat insulation layer of the heat shield in the prior art is relatively smooth, and with the increase of the use time, the outer layer and the heat insulation layer may be separated, affecting the normal use.
[0005] To solve the above problems, the utility model provides a three -layer heat shield structure, including the bandage and two cover bodies, each cover body includes heat insulation layer, the outer cover layer located on the outside of heat insulation layer, the inner cover layer located on the inside of heat insulation layer, the inner cover layer and the outer cover layer are half ring straight cylinder, the outer cover layer is equipped with the recessed card slot to the inner cover layer direction, the card slot extends along the circumference of the outer cover layer, the inside of heat insulation layer is bonded to the inner cover layer and the outside is bonded to the outer cover layer and is embedded with the card slot, two cover bodies are connected after forming the cylinder, and the card slot of two cover bodies forms a ring, the bandage is around the card slot to realize the fastening of two cover bodies.
[0006] Compared with the prior art, the above scheme designs the cover body as a three-layer structure combined by the heat insulation layer, the outer cover layer and the inner cover layer, wherein the heat insulation layer plays a major role in heat insulation, and the outer cover layer and the inner cover layer protect the outside and the inside of the heat insulation layer respectively, and the outer cover layer is provided with the recessed card slot to the inner cover layer direction, which significantly increases the contact area and friction resistance between the outer cover layer and the heat insulation layer through the embedded cooperation of the card slot and the heat insulation layer, improves the connection tightness of the outer cover layer to the heat insulation layer, and effectively prevents the interlayer separation problem caused by material aging or vibration; and the two cover bodies are fastened by the bandage in the card slot, realizing convenient assembly.
[0007] In an improved scheme, the clamping slots of the outer cover layer are at least two and are distributed along the axial direction, and the clamping slots of the two cover bodies correspond one by one, and the multiple clamping slots form multiple embedded sites distributed along the axial direction, which can disperse the interlayer shear stress and avoid local separation caused by excessive stress on a single point, while improving the axial displacement resistance of the overall structure.
[0008] In an improved scheme, the end of the binding belt is provided with a buckle, and the two ends of the binding belt are connected by the buckle to form a ring, and the buckle makes the installation of the binding belt simple and convenient.
[0009] In an improved scheme, the binding belt and the buckle are both made of metal material, which ensures reliable connection under high temperature working condition.
[0010] In an improved scheme, the lengths of the outer cover layer and the inner cover layer are longer than the length of the heat insulation layer, and the outer edges of the two sides of the outer cover layer and the inner cover layer are matched with each other, and the outer edges of the same side of the outer cover layer and the inner cover layer are formed into a binding structure by bending, which forms full protection of the two sides of the heat insulation layer through the binding structure, which can not only prevent the outer edge of the heat insulation layer from being exposed and damaged, but also improve the overall structural strength and optimize the appearance integrity.
[0011] In an improved scheme, the outer cover layer and the inner cover layer are both made of stainless steel material, which has excellent mechanical strength and corrosion resistance, and can significantly prolong the service life of the cover body. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a schematic view of the overall structure of a three-layer heat insulation cover;
[0013] Figure 2 It is a schematic view of the cross section of a three-layer heat insulation cover structure;
[0014] Figure 3 It is a schematic view of a single cover body of a three-layer heat insulation cover structure;
[0015] Figure 4 It is Figure 2 It is a local enlarged schematic view of area A;
[0016] Figure 5 It is Figure 3 It is a local enlarged schematic view of area B;
[0017] Figure 6 It is a schematic view of a buckle of a three-layer heat insulation cover structure.
[0018] BRIEF DESCRIPTION OF DRAWINGS,
[0019] 1, outer cover layer; 11, clamping slot; 2, inner cover layer; 3, heat insulation layer; 4, binding belt; 41, buckle; 5, binding structure. DETAILED DESCRIPTION
[0020] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed in order to adapt to specific application occasions.
[0021] In the description of the following embodiments, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0022] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0023] The present application will be further described in detail below in combination with the drawings and specific embodiments.
[0024] Please refer to Figures 1-6 The embodiment of the utility model provides a three -layer heat -proof cover structure, including bandage 4 and two cover bodies, each cover body includes heat insulation layer 3, the outer cover layer 1 located heat insulation layer 3 outside, the inner cover layer 2 located heat insulation layer 3 inside, the inner cover layer 2 and the outer cover layer 1 are half ring straight cylinder, the outer cover layer 1 is equipped with the recessed clamping groove 11 to the inner cover layer 2 direction, clamping groove 11 extends along the circumference of outer cover layer 1, the inner side of heat insulation layer 3 is bonded to inner cover layer 2 and the outer side is bonded to outer cover layer 1 and is embedded with clamping groove 11, two cover bodies are butted in the formation of cylinder, and the clamping groove 11 of two cover bodies forms annular, and bandage 4 is around the connection in clamping groove 11 to realize the fastening of two cover bodies.
[0025] The above scheme designs the cover body as a combination of three layers of the heat insulation layer 3, the outer cover layer 1 and the inner cover layer 2, wherein the heat insulation layer 3 plays a main heat insulation role, and the outer cover layer 1 and the inner cover layer 2 protect the outer side and the inner side of the heat insulation layer 3 respectively, and the outer cover layer 1 is provided with a clamping groove 11 recessed towards the inner cover layer 2, and the clamping groove 11 is embedded and matched with the heat insulation layer 3, thereby significantly increasing the contact area and friction resistance between the outer cover layer 1 and the heat insulation layer 3, improving the connection tightness of the outer cover layer 1 to the heat insulation layer 3, and effectively preventing the interlayer separation problem caused by material aging or vibration. Two cover bodies are used to be attached to the two sides of the exhaust pipe catalyst respectively, and then the fastening is achieved by winding the binding belt 4 into the clamping grooves 11 of the two cover bodies, thereby realizing convenient assembly.
[0026] In the embodiment, the clamping grooves 11 of the outer cover layer 1 are two and are distributed in an axial direction, and the clamping grooves 11 of the two cover bodies correspond to each other, and a plurality of clamping grooves 11 form a plurality of embedded and matched positions distributed in the axial direction, thereby dispersing the interlayer shear stress, avoiding local separation caused by excessive stress on a single point, and improving the axial displacement resistance of the overall structure.
[0027] As shown in Figure 6 In the embodiment, the end of the binding belt 4 is provided with a buckle 41, the two ends of the binding belt 4 are connected by the buckle 41 to form a ring, and the buckle 41 makes the installation of the binding belt 4 simple and convenient. The binding belt 4 and the buckle 41 are preferably made of metal material, thereby ensuring reliable connection under high temperature working conditions.
[0028] In the embodiment, the lengths of the outer cover layer 1 and the inner cover layer 2 are longer than the length of the heat insulation layer 3, and the outer edges of the two sides of the outer cover layer 1 and the inner cover layer 2 are attached to each other, and the outer edges of the same side of the outer cover layer 1 and the inner cover layer 2 are bent to form a wrapping structure 5, thereby forming full wrapping protection on the two sides of the heat insulation layer 3, which can prevent the outer edge of the heat insulation layer 3 from being exposed and damaged, and can improve the overall structural strength and optimize the appearance integrity.
[0029] The outer cover layer 1 and the inner cover layer 2 are preferably made of stainless steel material, which has excellent mechanical strength and corrosion resistance, thereby significantly prolonging the service life of the cover body.
[0030] It should be noted that in the description of the present application, the terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative positional relationship, movement condition and the like between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.
[0031] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0032] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A three-layer heat shield structure, characterized by, The application relates to a heat-insulating cover, which comprises a binding belt (4) and two cover bodies, each of which comprises a heat-insulating layer (3), an outer cover layer (1) located outside the heat-insulating layer (3), and an inner cover layer (2) located inside the heat-insulating layer (3); the inner cover layer (2) and the outer cover layer (1) are both in the shape of a half-ring straight cylinder; the outer cover layer (1) is provided with a clamping groove (11) which is recessed towards the inner cover layer (2), the clamping groove (11) extends along the circumference of the outer cover layer (1), the inner side of the heat-insulating layer (3) is attached to the inner cover layer (2) and the outer side is attached to the outer cover layer (1) and is embedded with the clamping groove (11), the two cover bodies are connected to form a cylinder after abutting, and the clamping grooves (11) of the two cover bodies form a ring, and the binding belt (4) is wound around the clamping groove (11) to fasten the two cover bodies.
2. The three-layer grommet structure of claim 1, wherein, The clamping grooves (11) of the outer cover layer (1) are at least two and are distributed along the axial direction, and the clamping grooves (11) of the two cover bodies correspond to each other.
3. The three-layer grommet structure of claim 1 or 2, wherein, The end of the binding belt (4) is provided with a buckle (41), and the two ends of the binding belt (4) are connected through the buckle (41) to form a ring.
4. The three-layer grommet structure of claim 3, wherein, The binding belt (4) and the buckle (41) are both made of metal.
5. The three-layer grommet structure of claim 1, wherein, The lengths of the outer cover layer (1) and the inner cover layer (2) are both longer than the length of the heat-insulating layer (3), and the outer edges of the two sides of the outer cover layer (1) and the inner cover layer (2) are attached to each other, and the outer edges of the same side of the outer cover layer (1) and the inner cover layer (2) form a folding structure (5).
6. The three-layer grommet structure of claim 1 or 5, wherein, The outer cover layer (1) and the inner cover layer (2) are both made of stainless steel.