Knitted sleeve with thermal barrier effect

Abstract

The utility model discloses a kind of braided sleeve with heat resistance effect, including braided sleeve body, the braided sleeve body includes inner support layer, middle flame-retardant layer and outer protective layer;The inner support layer includes support tube, the outer surface of the support tube is evenly provided with a plurality of air holes.The support tube of the braided sleeve with heat resistance effect inner support layer with air hole promotes air circulation heat dissipation, guide rib standard cable arrangement, clamping protruding block and the clamping groove of middle flame-retardant layer are tightly engaged to form stable connection;The flame-retardant sleeve of middle flame-retardant layer is inhibited by flame-retardant material Fire spreads, fin and heat dissipation groove expand heat dissipation area and accelerate heat export;The protective sleeve of outer protective layer fixes internal structure with positioning batten, the synergistic effect of three is effective barrier to external high temperature invasion, also quickly dissipate the heat generated by internal cable, simultaneously by mechanical clamping and double fixed with adhesive Ensure structural stability, applicable to cable protection scene under high temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of single-axis vacuum and dough sheeting technology, specifically a braided sleeve with heat-insulating effect. Background Technology

[0002] Braided tubing is a tubular protective structure made of fiber materials such as glass fiber, basalt fiber, polytetrafluoroethylene fiber, and nylon fiber through a braiding process. It is mainly used to wrap slender parts such as cables and pipes, and is widely used in industrial equipment, automotive electronics, aerospace, and home appliances. Its core function is to provide multi-dimensional protection and performance enhancement for the internal components. However, existing braided tubing still has some problems in use: Traditional braided sheaths mostly focus on structural strength and basic protection performance, with poor heat insulation effect. When in a high-temperature environment, heat can easily be transferred to the internal cable through the braided sheath, which will accelerate the aging of the cable insulation layer and even cause safety accidents such as cable short circuits and burnout.

[0003] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0004] To address the aforementioned issues, an innovative design was developed based on the existing braided sleeve. Utility Model Content

[0005] The purpose of this utility model is to provide a braided sleeve with heat-insulating effect, so as to solve the problem that most of the braided sleeves mentioned in the background art only focus on structural strength and basic protection performance, and have poor heat-insulating effect; when in a high-temperature environment, heat is easily transferred to the internal cable through the braided sleeve, which leads to accelerated aging of the cable insulation layer and even causes safety accidents such as cable short circuits and burnout.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A braided sleeve with heat-insulating effect includes a braided sleeve body and an inner support layer, wherein the braided sleeve body includes an inner support layer, a middle flame-retardant layer and an outer protective layer. The inner support layer includes a support tube, the outer surface of which is uniformly provided with a number of ventilation holes, the inner wall of which is integrally formed with six guide ribs, and the outer surface of which is fixed with a number of snap-fit ​​protrusions. The flame-retardant layer includes a flame-retardant sleeve fitted on the outer surface of the support tube. The inner wall of the flame-retardant sleeve has a snap-fit ​​groove that matches the snap-fit ​​protrusion. The outer surface of the flame-retardant sleeve is glued with several heat sinks. The outer wall of the heat sink has six heat sink grooves in a ring. The outer protective layer includes a protective sleeve fitted onto the outer surface of the flame-retardant sleeve, and the inner wall of the protective sleeve is glued with several positioning strips.

[0007] Using the above technical solution, the inner support layer's support tube promotes air circulation and heat dissipation with vent holes, the guide ribs regulate cable arrangement, and the snap-fit ​​protrusions and the snap-fit ​​grooves of the middle flame-retardant layer form a stable connection; the flame-retardant sleeve of the middle flame-retardant layer suppresses the spread of fire with flame-retardant material, and the heat sink and heat dissipation groove expand the heat dissipation area and accelerate heat dissipation; the outer protective layer's protective sleeve fixes the internal structure with positioning strips. The three work together to effectively block the intrusion of external high temperature and quickly dissipate the heat generated by the internal cables. At the same time, the dual fixation of mechanical snap-fit ​​and adhesive ensures structural stability, making it suitable for cable protection scenarios in high-temperature environments.

[0008] Preferably, the vent holes are arranged in six rows in a ring along the length of the support tube, and each row contains six circular vent holes.

[0009] By adopting the above technical solution, an air circulation channel is constructed through the regularly distributed vent holes on the support tube. The arrangement of six rows of six holes in each row allows the airflow to flow evenly through the inside of the sleeve, accelerating the heat exchange between the inside and outside of the sleeve, assisting in heat dissipation and enhancing the heat insulation effect. At the same time, the even arrangement can avoid local heat accumulation and ensure stable heat insulation performance.

[0010] Preferably, the guide rib is designed along the length of the support pipe, and the cross-section of the guide rib is an isosceles trapezoidal structure.

[0011] By adopting the above technical solution, guide ribs with an isosceles trapezoidal cross section are set along the length of the support pipe. The trapezoidal structure can balance the guiding stability and the smoothness of installation. The extension in the length direction ensures that the cable has a guiding effect throughout the cable installation process. This facilitates the cable to be quickly and accurately inserted into the sleeve, avoiding jamming during installation. At the same time, the trapezoidal structure can enhance the structural strength of the inner wall of the support pipe and reduce the compression of the cable when the sleeve is bent.

[0012] Preferably, the snap-fit ​​protrusion has a hemispherical structure, and the snap-fit ​​protrusion and the snap-fit ​​groove are in an interference fit.

[0013] By adopting the above technical solution, the arc-shaped structure of the hemispherical snap-fit ​​protrusion is adapted to the snap-fit ​​groove, and a tight mechanical connection force is generated through interference fit to avoid interlayer loosening, so as to achieve a stable connection between the inner support layer and the middle flame-retardant layer and prevent relative displacement between the two. At the same time, the hemispherical structure facilitates the guiding and snapping during assembly, improving installation efficiency.

[0014] Preferably, the heat sink has a ring structure, and six heat sinks are evenly distributed along the length of the flame-retardant sleeve, and the heat dissipation groove has an arc-shaped groove structure.

[0015] By adopting the above technical solution, the heat contact area is expanded by six equally spaced annular heat sinks, and the heat exchange space is further increased by the arc-shaped heat dissipation grooves, making it easier for heat to be conducted and dissipated, quickly dissipating the heat absorbed by the middle flame-retardant layer, avoiding heat accumulation. At the same time, the equally spaced arrangement ensures uniform heat dissipation in each section of the sleeve, enhancing the overall heat insulation effect.

[0016] Preferably, the positioning strip is elongated and designed along the length of the protective sleeve, and the inner wall of the positioning strip is tightly fitted to the outer wall of the heat sink.

[0017] By adopting the above technical solution, a long strip-shaped positioning pressure strip is set along the length of the protective sleeve. By tightly fitting with the outer wall of the heat sink, a continuous clamping force is formed, which restricts the displacement of the heat sink; fixes the position of the heat sink, and prevents it from shifting during use, thus affecting the heat dissipation and heat insulation effect. At the same time, it enhances the connection stability between the outer protective layer and the middle flame-retardant layer and improves the overall structural strength of the sleeve.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the braided sleeve with heat-insulating effect, 1. The inner support layer's support tube promotes air circulation and heat dissipation with ventilation holes, the guide ribs regulate cable arrangement, and the snap-fit ​​protrusions and the snap-fit ​​grooves of the middle flame-retardant layer form a stable connection; the flame-retardant sleeve of the middle flame-retardant layer inhibits the spread of fire with flame-retardant material, and the heat sink and heat dissipation groove expand the heat dissipation area and accelerate heat dissipation; the outer protective layer's protective sleeve fixes the internal structure with positioning strips. The three work together to effectively block the intrusion of external high temperature and quickly dissipate the heat generated by the internal cables. At the same time, the double fixation of mechanical snap-fit ​​and adhesive ensures structural stability, making it suitable for cable protection scenarios in high-temperature environments. 2. An air circulation channel is constructed through the regularly distributed vent holes on the support tube. The arrangement of six rows of six holes in each row allows the airflow to flow evenly through the inside of the sleeve, accelerating the heat exchange between the inside and outside of the sleeve, assisting in heat dissipation and enhancing the heat insulation effect. At the same time, the even arrangement can avoid local heat accumulation and ensure stable heat insulation performance. 3. The heat contact area is expanded by six equally spaced annular heat sinks, and the heat exchange space is further increased by the arc-shaped heat dissipation grooves, making it easier for heat to be conducted and dissipated, quickly dissipating the heat absorbed by the middle flame-retardant layer, avoiding heat accumulation. At the same time, the equally spaced arrangement ensures uniform heat dissipation in each section of the sleeve, enhancing the overall heat insulation effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the main body of this utility model; Figure 2 This is a schematic diagram of the internal support layer structure of this utility model; Figure 3 This is a schematic diagram of the flame-retardant layer structure in this utility model; Figure 4 This is a schematic diagram of the heat sink structure of this utility model; Figure 5 This is a schematic diagram of the outer protective layer structure of this utility model.

[0020] In the diagram: 1. Braided sleeve body; 2. Inner support layer; 201. Support tube; 202. Ventilation hole; 203. Guide rib; 204. Snap-fit ​​protrusion; 3. Middle flame-retardant layer; 301. Flame-retardant sleeve; 302. Snap-fit ​​groove; 303. Heat sink; 304. Heat dissipation groove; 4. Outer protective layer; 401. Protective sleeve; 402. Positioning strip. Detailed Implementation

[0021] 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. Example 1

[0022] Please see Figure 1 , Figure 2 This utility model provides a technical solution: A braided sleeve with heat-insulating effect includes a braided sleeve body 1 and an inner support layer 2. The braided sleeve body 1 includes the inner support layer 2, a middle flame-retardant layer 3, and an outer protective layer 4. The inner support layer 2 includes a support tube 201. The outer surface of the support tube 201 is evenly provided with a plurality of vent holes 202. The inner wall of the support tube 201 is integrally formed with six guide ribs 203. The outer surface of the support tube 201 is fixed with a plurality of snap-fit ​​protrusions 204. The vent holes 202 are arranged in six rows in a ring along the length direction of the support tube 201, and each row contains six circular vent holes 202. The guide ribs 203 are designed along the length direction of the support tube 201, and the cross-section of the guide ribs 203 is an isosceles trapezoidal structure.

[0023] This heat-insulating braided sleeve features six rows of vents 202 arranged in a ring along the length of the outer surface of the support tube 201. These evenly distributed circular channels create an airflow path between the inside and outside of the sleeve, utilizing the low thermal conductivity of air to form an "air insulation layer." Simultaneously, natural convection within the channels carries away localized heat from inside the support tube 201, reducing the amount of heat transferred to the flame-retardant layer 3, thus enhancing the overall heat insulation effect. Furthermore, the six-row ring design prevents the concentrated placement of vents 202 from causing a decrease in the local structural strength of the support tube 201. The six integrated guide ribs 203 on the inner wall of the support tube 201 extend along the length and have an isosceles trapezoidal cross-section. The isosceles trapezoidal shape ensures the stability of the guide ribs 202. The connection strength between the inner wall of the support tube 201 and the support tube 201 is strong, and a smooth guide slope can be formed. The six evenly distributed guide ribs 203 can limit the cable being installed from the circumference, preventing the cable from shifting and rubbing against the tube wall inside the sleeve. At the same time, the smooth slope can reduce the resistance when the cable is installed, so as to achieve fast and accurate installation. The several snap-fit ​​protrusions 204 fixed on the outer surface of the support tube 201 provide a mechanical positioning basis for the connection between the inner support layer 2 and the middle flame retardant layer 3. The protrusion structure and the matching structure of the middle flame retardant layer 3 form a snap-fit ​​fixation, ensuring that the inner support layer 2 and the middle flame retardant layer 3 will not shift circumferentially or axially during subsequent assembly. This provides a stable installation carrier for the middle flame retardant layer 3 to play its heat-insulating role, and lays the foundation for the heat-insulating performance and reliability of the braided sleeve body 1. Example 2

[0024] Please see Figure 3 , Figure 4 This utility model provides a technical solution: The flame-retardant layer 3 includes a flame-retardant sleeve 301 fitted onto the outer surface of the support tube 201. The inner wall of the flame-retardant sleeve 301 has a snap-fit ​​groove 302 that matches the snap-fit ​​protrusion 204. Several heat sinks 303 are glued to the outer surface of the flame-retardant sleeve 301. Six heat dissipation grooves 304 are annularly formed on the outer wall of each heat sink 303. The snap-fit ​​protrusion 204 has a hemispherical structure and an interference fit with the snap-fit ​​groove 302. The heat sinks 303 have an annular structure, and six heat sinks 303 are evenly distributed along the length of the flame-retardant sleeve 301. The heat dissipation grooves 304 have an arc-shaped groove structure.

[0025] This heat-insulating braided sleeve, with its flame-retardant sleeve 301 fitted onto the outer surface of the support tube 201, serves as the basic carrier for heat insulation. Made of basalt fiber, it directly blocks external heat transfer to the internal cables and provides support for subsequent heat dissipation components. The snap-fit ​​groove 302 on the inner wall of the flame-retardant sleeve 301 forms an interference fit with the hemispherical snap-fit ​​protrusion 204 on the outer surface of the support tube 201. This tight mechanical force from the interference fit ensures a firm connection, preventing axial or circumferential displacement between the middle flame-retardant layer 3 and the inner support layer 2 during use, while also guaranteeing the stability of the connection between the two layers, thus providing a foundation for the overall synergy of the heat-insulating structure. The outer surface of the flame-retardant sleeve 301... Six annular heat sinks 303, bonded together with adhesive, are arranged at equal intervals along the length of the sleeve. The annular structure can completely wrap around the flame-retardant sleeve 301, increasing the contact area with air and quickly absorbing the heat transferred by the flame-retardant sleeve 301 and dissipating it into the air. The equidistant arrangement ensures that the heat is evenly distributed in each section of the sleeve, avoiding local heat accumulation. The six arc-shaped grooves 304 on the outer wall of the heat sink 303 further increase the heat exchange area of ​​the heat sink 303. At the same time, the arc-shaped grooves can guide airflow and accelerate heat dissipation. By increasing the heat dissipation path and air convection efficiency, the heat dissipation effect is enhanced, which helps the flame-retardant sleeve 301 improve the overall heat resistance performance and effectively prevent external heat from being transferred to the internal cables. Example 3

[0026] Please see Figure 5 This utility model provides a technical solution: The outer protective layer 4 includes a protective sleeve 401 fitted onto the outer surface of the flame-retardant sleeve 301. Several positioning strips 402 are glued to the inner wall of the protective sleeve 401. The positioning strips 402 are elongated and designed along the length of the protective sleeve 401. The inner wall of the positioning strips 402 is tightly fitted to the outer wall of the heat sink 303.

[0027] This heat-insulating braided sleeve, with the protective sleeve 401 fitted over the outer surface of the flame-retardant sleeve 301, is the core of the outer protection layer. Made of polytetrafluoroethylene fiber woven into a tubular structure, it utilizes its material properties to directly resist friction, chemical corrosion, and external impacts from the external environment, preventing the core heat-insulating components such as the flame-retardant sleeve 301 and heat sink 303 in the middle flame-retardant layer 3 from failing due to external damage, thus providing a comprehensive external barrier for the entire braided sleeve. The inner wall of the protective sleeve 401 is bonded with a long strip-shaped positioning strip 402, which extends along the length of the protective sleeve 401 and is attached to the outer wall of the heat sink 303. The tight fit and elongated structure can form a continuous clamping force along the length of the sleeve. The tight fit connection can firmly fix the heat sink 303 to the outer surface of the flame-retardant sleeve 301. This not only prevents the heat sink 303 from shifting or falling off due to vibration, bending or other factors during use, ensuring the stable heat dissipation and heat insulation function of the heat sink 303, but also enhances the interlayer bonding between the outer protective layer 4 and the middle flame-retardant layer 3 through the connecting action of the positioning pressure strip 402, avoiding relative sliding between the two layers, improving the overall structural integrity and deformation resistance of the entire braided sleeve, and providing a guarantee for the long-term reliable use of the braided sleeve.

[0028] Working principle: In use, this invention first provides the structural foundation for the inner support layer 2 using the support tube 201. Six rows of circularly distributed vent holes 202 on its outer surface create an airflow path between the inside and outside of the sleeve, utilizing the low thermal conductivity of air to form an "air insulation layer." Simultaneously, natural air convection carries away localized heat from inside the support tube 201, reducing the amount of heat transferred to the middle flame-retardant layer 3. Six isosceles trapezoidal guide ribs 203 on the inner wall serve as guides and limits during cable installation, ensuring the cable remains stable inside the sleeve and preventing damage to the heat-insulating structure due to cable misalignment and friction. Next, the flame-retardant sleeve 301 of the middle flame-retardant layer 3 directly blocks external heat transfer inwards. The interference fit between the inner wall's locking groove 302 and the hemispherical locking protrusion 204 on the outer surface of the support tube 201 ensures the inner support... The support layer 2 and the middle flame-retardant layer 3 are stably connected to work together to block heat. At the same time, the six annular heat sinks 303 arranged at equal intervals on the outer surface of the flame-retardant sleeve 301 quickly absorb the heat transferred by the flame-retardant sleeve 301. The six arc-shaped heat dissipation grooves 304 on the outer wall of the heat sink 303 further expand the heat exchange area and guide air flow, accelerate heat dissipation, and enhance the heat blocking effect. Finally, the protective sleeve 401 of the outer protective layer 4 resists external friction, corrosion and impact, and protects the core heat blocking components of the middle flame-retardant layer 3 from damage. The long strip positioning pressure strip 402 designed along the length of its inner wall fits tightly with the outer wall of the heat sink 303, fixes the position of the heat sink 303 and enhances the interlayer bonding between the outer protective layer 4 and the middle flame-retardant layer 3, ensuring the stability of the entire sleeve structure, continuously and efficiently playing the heat blocking role, and blocking external heat from being transferred to the internal cables.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A braided sleeve with heat-insulating effect, comprising a braided sleeve body (1) and an inner support layer (2), characterized in that: The braided sleeve body (1) includes an inner support layer (2), a middle flame-retardant layer (3) and an outer protective layer (4). The inner support layer (2) includes a support tube (201), and a number of ventilation holes (202) are evenly opened on the outer surface of the support tube (201). The inner wall of the support tube (201) is integrally formed with six guide ribs (203), and a number of snap-fit ​​protrusions (204) are fixed on the outer surface of the support tube (201). The flame-retardant layer (3) includes a flame-retardant sleeve (301) sleeved on the outer surface of the support tube (201). The inner wall of the flame-retardant sleeve (301) is provided with a snap-fit ​​groove (302) that matches the snap-fit ​​protrusion (204). A number of heat sinks (303) are glued to the outer surface of the flame-retardant sleeve (301). The outer wall of the heat sink (303) is provided with six heat dissipation grooves (304) in a ring. The outer protective layer (4) includes a protective sleeve (401) sleeved on the outer surface of the flame-retardant sleeve (301), and the inner wall of the protective sleeve (401) is glued with a number of positioning strips (402).

2. The braided sleeve with heat-insulating effect according to claim 1, characterized in that: The ventilation holes (202) are arranged in six rows along the length of the support tube (201), and each row contains six circular ventilation holes (202).

3. The braided sleeve with heat-insulating effect according to claim 1, characterized in that: The guide rib (203) is designed along the length of the support tube (201), and the cross-section of the guide rib (203) is an isosceles trapezoidal structure.

4. The braided sleeve with heat-insulating effect according to claim 1, characterized in that: The snap-fit ​​protrusion (204) has a hemispherical structure, and the snap-fit ​​protrusion (204) and the snap-fit ​​groove (302) are in an interference fit.

5. A braided sleeve with heat-insulating effect according to claim 1, characterized in that: The heat sink (303) has a ring structure, and six heat sinks (303) are evenly distributed along the length of the flame-retardant sleeve (301), and the heat dissipation groove (304) has an arc-shaped groove structure.

6. A braided sleeve with heat-insulating effect according to claim 1, characterized in that: The positioning strip (402) is long and narrow, and is designed along the length of the protective sleeve (401). The inner wall of the positioning strip (402) is closely connected to the outer wall of the heat sink (303).

Images