A high-temperature resistant automotive electrical insulation sleeve

Abstract

This utility model relates to the field of circuit protection technology and discloses a high-temperature resistant automotive electrical insulation sleeve, including a shell. A second mounting ring is fixedly connected to the top of the shell. A groove is formed inside the second mounting ring, and a spring is fixedly connected inside the groove. A slider is fixedly connected to one side of the spring, and the outer wall of the slider is slidably connected to the inside of the groove. A third mounting ring is slidably connected inside the second mounting ring. A first mounting ring is fixedly connected to the bottom outer wall of the shell, and a fourth mounting ring is slidably connected to the outer wall of the first mounting ring. In this utility model, a snap-fit ​​shell is used to quickly fit the mounting rings to securely cover the cable. The axial docking of the mounting rings allows for modular expansion of the sleeve length, improving adaptation efficiency and assembly speed. The internal double-layer composite structure, through a rigid-flexible coupling design, suppresses cable bending and wear under dynamic operating conditions, ensuring electrical safety.

Description

Technical Field

[0001] This utility model relates to the field of circuit protection technology, and in particular to a high-temperature resistant automotive electrical insulation sleeve. Background Technology

[0002] The core function of automotive electrical insulation is to prevent abnormal current leakage or the formation of unintended paths, ensuring personnel safety, normal equipment operation, and system reliability. It effectively isolates components at different potentials by setting high-resistance barriers on or between conductors, preventing short circuits, leakage, and accidental conduction to metal parts of the vehicle body. Simultaneously, the insulation layer can withstand harsh conditions in the automotive environment, such as high temperatures, oil contamination, humidity, and vibration, ensuring stable operation of the electrical system under various conditions and isolating mutual interference between different circuits. It is the fundamental guarantee for the electrical safety and functional integrity of automobiles.

[0003] Traditional insulating sleeves have some shortcomings: On the one hand, the fixed length of traditional sleeves leads to poor assembly versatility and makes it impossible to flexibly adapt to wire harnesses of different sizes. They rely on on-site cutting or segment splicing, resulting in wasted time and sealing risks. On the other hand, traditional single-layer or simple composite structures have a broken tensile-buffering function. Rigid materials are prone to aggravating cable bending fatigue, while purely flexible layers are difficult to withstand mechanical stress, leading to an increased probability of protection failure under dynamic working conditions. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-temperature resistant automotive electrical insulation sleeve. Through a snap-fit ​​design of the outer shell, it achieves rapid fitting and installation with the third and fourth mounting rings, ensuring the sleeve securely covers the cable's outer wall. Furthermore, the axial connection of the first and second mounting rings allows for modular length extension of the sleeve body, improving the compatibility efficiency and assembly speed for various cable specifications. Simultaneously, the internal shell employs a two-layer composite structure for synergistic protection: a smooth layer provides low-friction threading guidance and vibration stress buffering; a braided layer imparts axial tensile strength to the sleeve. This rigid-flexible coupling design of the smooth and braided layers effectively suppresses cable bending and wear under dynamic operating conditions, ensuring electrical safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-temperature resistant automotive electrical insulating sleeve includes: a housing, a second mounting ring fixedly connected to the top of the housing, a groove formed inside the second mounting ring, a spring fixedly connected inside the groove, a slider fixedly connected to one side of the spring, the outer wall of the slider slidably connected inside the groove, a third mounting ring slidably connected inside the second mounting ring, a first mounting ring fixedly connected to the bottom outer wall of the housing, and a fourth mounting ring slidably connected to the outer wall of the first mounting ring.

[0006] Furthermore, a slot is provided on the bottom outer wall of the third mounting ring, and the front end of the slider is engaged inside the slot.

[0007] Furthermore, the top two sides of the third mounting ring are provided with first bolts, the outer wall of the first bolts is provided with nuts, and the inner ring of the third mounting ring is provided with a protective ring.

[0008] Furthermore, the outer wall of the first mounting ring is provided with four sliding grooves, and the inside of the fourth mounting ring is equipped with a locking block, the outer wall of the locking block being engaged with the inside of the sliding groove.

[0009] Furthermore, a second bolt is provided at the bottom of the fourth mounting ring, and a nut is also provided on the outer wall of the second bolt.

[0010] Furthermore, a smooth layer is provided on the inner side of the outer shell, and a woven layer is provided between the smooth layer and the outer shell.

[0011] This utility model has the following beneficial effects: In this utility model, the snap-fit ​​structure design of the outer shell enables rapid fitting and installation with the third and fourth mounting rings, so that the outer shell of the tube can be firmly wrapped around the outer wall of the cable. Furthermore, the axial docking of the first and second mounting rings completes the modular length extension of the tube body, improving the compatibility efficiency and assembly speed of multi-specification cables.

[0012] In this invention, a two-layer composite structure inside the outer shell achieves synergistic protection. The smooth layer provides low-friction wire guiding and vibration stress buffering; the braided layer gives the sleeve axial tensile strength. The rigid-flexible coupling design of the inner and middle layers effectively suppresses cable bending and wear under dynamic working conditions, ensuring electrical safety. Attached Figure Description

[0013] Figure 1 This is a perspective view of a high-temperature resistant automotive electrical insulation sleeve proposed in this utility model; Figure 2 This is a cross-sectional view of the main body of a high-temperature resistant automotive electrical insulating sleeve proposed in this utility model; Figure 3 This is a schematic diagram of the third mounting ring of a high-temperature resistant automotive electrical insulating sleeve proposed in this utility model; Figure 4 This is a schematic diagram of the fourth mounting ring of a high-temperature resistant automotive electrical insulation sleeve proposed in this utility model.

[0014] Legend: 1. Outer shell; 2. First mounting ring; 3. Second mounting ring; 4. Third mounting ring; 5. Fourth mounting ring; 6. Braided layer; 7. Smooth layer; 8. Slide groove; 9. Slider; 10. Spring; 11. Slot; 12. First bolt; 13. Protective ring; 14. Locking block; 15. Groove; 16. Second bolt. Detailed Implementation

[0015] 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.

[0016] Reference Figures 1-4 An embodiment of this utility model provides a high-temperature resistant automotive electrical insulating sleeve, comprising: a shell 1, a second mounting ring 3 fixedly connected to the top of the shell 1, a groove 15 formed inside the second mounting ring 3, a spring 10 fixedly connected inside the groove 15, a slider 9 fixedly connected to one side of the spring 10, the outer wall of the slider 9 slidably connected inside the groove 15, a third mounting ring 4 slidably connected inside the second mounting ring 3, a first mounting ring 2 fixedly connected to the bottom outer wall of the shell 1, a fourth mounting ring 5 slidably connected to the outer wall of the first mounting ring 2, a smooth layer 7 provided on the inner side of the shell 1, and a braided layer 6 provided between the smooth layer 7 and the shell 1.

[0017] Specifically, during top connection, the third mounting ring 4 is fixed to one side of the cable using the first bolt 12, and then inserted into the main body shell 1 from the other side. The slider 9 inside the second mounting ring 3 engages with the slot 11 inside the third mounting ring 4 for fixation. If extension is required, the second mounting ring 3 at the top of the second main body shell 1 is installed on the outer wall of the first mounting ring 2 at the bottom of the first main body shell 1 for extension. During bottom connection, the fourth mounting ring 5 is slid onto the outer wall of the first mounting ring 2, and its internal locking block 14 engages with the slot 11 for fixation. Finally, the second bolt 16 is rotated for fixation. The two-layer composite structure inside the shell 1 provides synergistic protection. The smooth layer 7 provides low-friction cable guidance and vibration stress buffering; the braided layer 6 provides axial tensile strength to the sleeve. The rigid-flexible coupling design of the inner and middle layers effectively suppresses cable bending and wear under dynamic working conditions, ensuring electrical safety.

[0018] Reference Figure 3 and Figure 4The bottom outer wall of the third mounting ring 4 has a slot 11, and the front end of the slider 9 is engaged in the inside of the slot 11. The top two sides of the third mounting ring 4 are provided with first bolts 12, and the outer wall of the first bolts 12 is provided with nuts. The inner ring of the third mounting ring 4 is provided with a protective ring 13. The outer wall of the first mounting ring 2 has four sliding grooves 8. The inside of the fourth mounting ring 5 is provided with a locking block 14, and the outer wall of the locking block 14 is engaged in the inside of the sliding groove 8. The bottom of the fourth mounting ring 5 is provided with a second bolt 16, and the outer wall of the second bolt 16 is also provided with nuts.

[0019] Specifically, the bottom slot 11 of the third mounting ring 4 elastically engages with the slider 9 driven by the spring 10 inside the second mounting ring 3, achieving quick locking of the top of the outer shell 1; the first bolt 12 at the top, in conjunction with the nut, tightens the protective ring 13, enhancing the sealing of the cable port; the internal locking block 14 of the fourth mounting ring 5 slides along the four grooves 8 on the outer wall of the first mounting ring 2, and after positioning, it is locked with the nut by the second bolt 16 at the bottom, achieving axial modular expansion of the sleeve.

[0020] Working principle: The third mounting ring 4 is fixed to the cable by the first bolt 12. After passing through the outer shell 1, the spring 10 inside the second mounting ring 3 drives the slider 9 to elastically engage with the slot 11 of the third mounting ring 4, achieving quick locking. The protective ring 13 is pressed by the first bolt 12 and the nut to enhance the port sealing. When lengthening is required, the second mounting ring 3 at the top of the second outer shell 1 slides onto the first mounting ring 2 at the bottom of the first outer shell 1, and is positioned by the locking block 14 and the sliding groove 8. The fourth mounting ring 5 slides along the sliding groove 8 on the outer wall of the first mounting ring 2. After the locking block 14 engages with the slot 11, it is locked by the second bolt 16 and the nut to achieve bottom fixation. The braided layer 6 on the inner side of the outer shell 1 provides axial tensile strength, the smooth layer 7 reduces wire friction and buffers vibration stress, and the rigid-flexible coupling structure inhibits cable bending and wear, ensuring electrical safety in high-temperature environments.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high temperature resistant electrical automotive appliance insulating sleeve, characterized in that, include: The outer shell (1) has a second mounting ring (3) fixedly connected to its top. The second mounting ring (3) has a groove (15) inside. A spring (10) is fixedly connected inside the groove (15). A slider (9) is fixedly connected to one side of the spring (10). The outer wall of the slider (9) is slidably connected to the inside of the groove (15). A third mounting ring (4) is slidably connected inside the second mounting ring (3). A first mounting ring (2) is fixedly connected to the bottom outer wall of the outer shell (1). A fourth mounting ring (5) is slidably connected to the outer wall of the first mounting ring (2).

2. A high temperature resistant insulating sleeve for automotive electrical components according to claim 1, characterized in that: The bottom outer wall of the third mounting ring (4) is provided with a slot (11), and the front end of the slider (9) is engaged in the inside of the slot (11).

3. A high temperature resistant insulating sleeve for automotive electrical components according to claim 2, characterized in that: The top two sides of the third mounting ring (4) are provided with first bolts (12), the outer wall of the first bolts (12) is provided with nuts, and the inner ring of the third mounting ring (4) is provided with a protective ring (13).

4. The high temperature resistant insulating sleeve for automotive electrical components according to claim 1, wherein: The outer wall of the first mounting ring (2) is provided with four sliding grooves (8), and the fourth mounting ring (5) is provided with a locking block (14), the outer wall of the locking block (14) is engaged with the inside of the sliding groove (8).

5. A high temperature resistant insulating sleeve for automotive electrical components according to claim 4, characterized in that: The bottom of the fourth mounting ring (5) is provided with a second bolt (16), and the outer wall of the second bolt (16) is also provided with a nut.

6. The high-temperature resistant automotive electrical insulating sleeve according to claim 1, characterized in that: A smooth layer (7) is provided on the inner side of the outer shell (1), and a woven layer (6) is provided between the smooth layer (7) and the outer shell (1).

Images