A high temperature resistant aluminum foil sleeve
By designing tubular positioning components and spring clips on the aluminum foil sleeve, the problem of the aluminum foil sleeve loosening due to vibration in high-temperature environments was solved, achieving stable connection and enhanced adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGGUO XINGLONG AUTO PARTS CO LTD
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-21
AI Technical Summary
Existing high-temperature resistant aluminum foil sleeves are easily affected by external vibrations in high-temperature environments, causing the hooks or Velcro to loosen and resulting in poor connection stability.
It adopts a tubular positioning component and spring design. The spring clamps the pipes and fix them in place. An anti-slip layer is set on the spring to improve friction, adapt to different pipe diameters and enhance connection stability.
While ensuring installation speed, it significantly improves the connection stability between aluminum foil sleeves and pipe fittings, and adapts to the usage requirements of different pipe diameters.
Smart Images

Figure CN224533878U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sleeve technology, specifically relating to a high-temperature resistant aluminum foil sleeve. Background Technology
[0002] High-temperature resistant aluminum foil sleeve is a composite protective material designed specifically for high-temperature environments. By combining aluminum foil with materials such as glass fiber and ceramic coating, it achieves efficient heat insulation, fire resistance and corrosion resistance.
[0003] High-temperature resistant aluminum foil sleeves are commonly used in high-temperature environments to protect certain pipe components that require protection, such as fuel lines, metal lines in the braking system, and metal lines in the power steering system in automobile engine compartments; and metal lines near the exhaust pipe and catalytic converter in the exhaust system.
[0004] Currently, most high-temperature resistant aluminum foil sleeves use snap-on or Velcro fastening methods, such as... Figure 5 As shown, although the above method improves the installation speed of high-temperature resistant aluminum foil sleeves to a certain extent, it is also susceptible to external vibration, which can cause the fasteners or Velcro to loosen, allowing the high-temperature resistant aluminum foil sleeves to unfold and fall off from its periphery. Therefore, it also results in a certain loss of connection stability.
[0005] In view of this, the present invention provides a high-temperature resistant aluminum foil sleeve to solve the above problems. Utility Model Content
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant aluminum foil sleeve, comprising a tube body, wherein a positioning element is fixedly connected to the end of the tube body, and the positioning element is configured to fix the tube body when it is simultaneously sleeved on the periphery of the tube to be protected.
[0007] As a preferred embodiment of the high-temperature resistant aluminum foil sleeve of this utility model, the tube body includes a heat insulation layer and a reflective layer that covers and connects to the periphery of the heat insulation layer for reflecting heat radiation.
[0008] In a preferred embodiment of the high-temperature resistant aluminum foil sleeve of this utility model, the heat insulation layer is a glass fiber layer and the reflective layer is an aluminum foil layer.
[0009] As a preferred embodiment of the high-temperature resistant aluminum foil sleeve of this utility model, the positioning element includes a positioning sleeve and spring pieces that are radially protruding and spaced apart on the inner wall of the positioning sleeve.
[0010] As a preferred embodiment of the high-temperature resistant aluminum foil sleeve of this utility model, the raised surface of the spring sheet is provided with an anti-slip layer.
[0011] As a preferred embodiment of the high-temperature resistant aluminum foil sleeve of this utility model, the anti-slip layer is an anti-slip texture or an anti-slip pad.
[0012] As a preferred embodiment of the high-temperature resistant aluminum foil sleeve of this utility model, the protruding surface of the spring piece is a plane.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This utility model utilizes a tubular positioning component, identical to the pipe body, which can be fitted together with the pipe and placed around the pipe to be protected. The spring sheet on its inner wall clamps and fixes the component to be protected, thus ensuring a certain installation speed while significantly improving the stability of the connection between the component and the pipe.
[0015] Secondly, the elasticity of the spring allows it to be adapted to pipe fittings of different diameters, thereby improving its practicality. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0019] Figure 3 This is a perspective structural diagram of the positioning component of this utility model;
[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention;
[0021] Figure 5 This is a schematic diagram of the existing technology structure;
[0022] Figure 6 This is a structural schematic diagram of one embodiment of the present invention when it is fitted with the pipe fitting to be protected.
[0023] In the diagram: 1. Pipe body; 11. Insulation layer; 12. Reflective layer; 2. Positioning component; 21. Positioning sleeve; 22. Spring piece; 23. Anti-slip layer. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] This utility model relates to a high-temperature resistant aluminum foil sleeve, such as... Figure 1 As shown, it includes a tube body 1 and positioning components 2 fixedly connected to both ends of the tube body 1.
[0026] Among them, such as Figures 2-3 As shown, the tube body 1 includes a heat insulation layer 11 and a reflective layer 12 that covers and connects to the periphery of the heat insulation layer 11 for reflecting heat radiation; the positioning member 2 includes a tubular positioning sleeve 21 and spring pieces 22 arranged in a ring array on the inner wall of the positioning sleeve 21 with radial protrusions.
[0027] Specifically, in this embodiment, the heat insulation layer 11 is a glass fiber woven layer with heat insulation function, and the reflective layer 12 is an aluminum foil layer. The aluminum foil layer has extremely low thermal emissivity and extremely high reflectivity. When thermal radiation irradiates the smooth aluminum foil surface, most of the thermal radiation energy, usually more than 90%, will be directly reflected back, thereby fundamentally preventing most of the heat from entering the tube.
[0028] In use, the pipe to be protected is inserted through the pipe body 1 and the positioning sleeve 21. At this time, the spring piece 22 located on the inner wall of the positioning sleeve 21 presses against the periphery of the pipe to be protected through its own elasticity. Since the spring piece 22 is arranged in a ring, it can form a clamp on the periphery of the pipe to be protected, so as to clamp the pipe and fix the sleeved pipe body 1.
[0029] Furthermore, to increase the friction between the spring 22 and the pipe to be protected, making the positioning sleeve 21 less prone to loosening, an anti-slip layer 23 is provided on the raised surface of the spring 22. For example, an anti-slip texture or a rubber anti-slip pad. By increasing the contact area with the periphery of the pipe to be protected or by adjusting the material properties, the positioning sleeve 21 is fixed more firmly.
[0030] Preferably, the spring piece 22 has an overall trapezoidal structure, and the raised surface of the trapezoidal structure is a plane or an arc surface that matches the periphery of the pipe to be protected. Compared with the structure of the common arc-shaped spring piece 22, it has a larger contact area with the periphery of the pipe to be protected, and can form line contact or surface contact with the periphery of the pipe to be protected, rather than the point contact of the arc-shaped spring piece 22. On the other hand, due to the overall trapezoidal structure of the spring piece 22, the inclined surfaces at both ends of the trapezoidal structure can be used to facilitate the insertion and removal of the pipe to be protected, thereby improving the installation speed.
[0031] In another embodiment, a protective fitting that mates with the sleeve of this application can also be manufactured, for example... Figure 6 As shown, an annular protrusion can be formed on the periphery of the pipe to be protected. Through the elasticity of the spring piece 22 on the sleeve of this application, it can be locked at the annular protrusion. The annular protrusion limits the positioning sleeve 21, making the sleeve between the pipe 1 and the pipe to be protected more stable and secure.
[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-temperature resistant aluminum foil sleeve, comprising a tube body (1), characterized in that: The end of the tube body (1) is fixedly connected to a positioning member (2), which is configured to fix the tube body (1) when it is synchronously sleeved on the periphery of the tube to be protected.
2. The high-temperature resistant aluminum foil sleeve according to claim 1, characterized in that: The tube body (1) includes a heat insulation layer (11) and a reflective layer (12) that covers and connects to the periphery of the heat insulation layer (11) for reflecting heat radiation.
3. The high-temperature resistant aluminum foil sleeve according to claim 2, characterized in that: The heat insulation layer (11) is a glass fiber layer, and the reflective layer (12) is an aluminum foil layer.
4. The high-temperature resistant aluminum foil sleeve according to claim 1, characterized in that: The positioning element (2) includes a positioning sleeve (21) and spring pieces (22) that are radially protruding and spaced apart on the inner wall of the positioning sleeve (21).
5. The high-temperature resistant aluminum foil sleeve according to claim 4, characterized in that: The raised surface of the spring piece (22) is provided with an anti-slip layer (23).
6. The high-temperature resistant aluminum foil sleeve according to claim 5, characterized in that: The anti-slip layer (23) is an anti-slip texture or an anti-slip mat.
7. The high-temperature resistant aluminum foil sleeve according to claim 4, characterized in that: The raised surface of the spring piece (22) is either a plane or an arc surface that matches the periphery of the pipe to be protected.