A bidirectional through insulation bushing
By introducing a combination design of stainless steel support rings and connecting ribs, carbon fiber sealing caps and rubber sealing blocks into the insulating bushing, the problems of pressure resistance, impact resistance, waterproofing and dustproofing of the insulating bushing under heavy load and harsh environment are solved, thereby improving the durability and insulation performance of the bushing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG AIDAS INSULATION MATERIALS CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-21
AI Technical Summary
Existing bidirectional through-insulating bushings have weak resistance to pressure and impact under heavy loads or harsh environments, and water and dust can easily enter at the through-hole, leading to a decrease in insulation performance and corrosion of the lines.
The structure is reinforced with a stainless steel support ring and connecting ribs, combined with a carbon fiber sealing cap and rubber sealing block to form a sealed structure that improves pressure resistance and waterproof and dustproof performance.
It enhances the durability of insulating sleeves under heavy loads or harsh environments, prevents damage to internal circuits, avoids corrosion caused by water and dust ingress, and improves insulation performance.
Smart Images

Figure CN224536796U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of insulating sleeve technology, and more specifically to a bidirectional through insulating sleeve. Background Technology
[0002] A bidirectional through-insulation sleeve is a tubular device used for the protection of power cables or conductors. Its internal design features a through structure that allows for bidirectional wiring. It is typically made of high-strength insulating materials (such as epoxy resin, silicone rubber, or PVC) and possesses excellent electrical insulation, high-temperature resistance, and mechanical protection properties. It is widely used in substations, electrical equipment connections, or cable ducts. It can isolate conductors from the external environment, prevent short circuits and leakage, and ensure flexible bidirectional wiring to meet the safety wiring requirements under complex working conditions.
[0003] While bidirectional through-type insulating sleeves have advantages such as electrical insulation and mechanical protection, they also have some disadvantages.
[0004] 1. Compared with metal sleeves, some plastic or composite material insulating sleeves have weaker resistance to pressure and impact, and may be easily damaged under heavy load or harsh environment, which may affect the cables or wires inside.
[0005] 2. Water or dust may enter at the points where the insulating sleeve passes through, leading to a decrease in insulation performance or corrosion of the internal wiring. Utility Model Content
[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a bidirectional through-hole insulating sleeve to solve the problems existing in the background art.
[0007] This utility model provides the following technical solution: a bidirectional through-type insulating sleeve, comprising a sleeve body, a sleeve cavity formed inside the sleeve body, a reinforcing component sleeved on the inner wall of the sleeve cavity, the reinforcing component including a support ring, with regularly arranged connecting ribs fixedly sleeved around the inner perimeter of the support ring, sealing heads movably sleeved at both the upper and lower ends of the sleeve body, the sealing head including a sealing cap, a connecting sleeve fixedly sleeved inside the sealing cap and near the inner side of the sleeve body, a regularly arranged rubber sealing block formed at the top of the sealing cap, and a regularly arranged sleeve joint formed on the adjacent side of the rubber sealing block. By incorporating reinforcing components, the insulating bushing is able to absorb and support the pressure and impact forces it receives during actual use, thereby enhancing its durability under heavy loads or harsh environments. This ensures that the cables or wires inside are not affected by external factors. The sealing head allows the cable or wire to pass through the bushing body. The shrinkage of the joint between the rubber sealing blocks helps to seal the cable or wire surface as it passes through the bushing body, thus sealing the contact point between the cable or wire and the sealing head surface. This effectively achieves waterproof and dustproof effects inside the bushing, thereby improving its insulation performance and preventing corrosion of the internal wiring.
[0008] Furthermore, the support ring and connecting ribs are all made of stainless steel. The use of stainless steel in the support ring and connecting ribs helps to enhance the compressive strength of the insulating tube when it is subjected to external impact or pressure, thus preventing the insulating sleeve from being damaged under heavy load or harsh environment.
[0009] Furthermore, the sealing cap is made of carbon fiber, which helps to support both ends of the insulating sleeve, thereby improving the pressure resistance and impact resistance of the two ends of the insulating sleeve.
[0010] Furthermore, the connecting sleeve is made of fiber-reinforced composite material, and the surface of the connecting sleeve is threaded. The connecting sleeve is hollow inside. The threaded surface of the connecting sleeve facilitates the connection between the sealing head and the insulating sleeve, thereby preventing the sealing head from falling off and causing external dust and moisture to enter and corrode the internal circuitry.
[0011] Furthermore, the rubber sealing block is located in a rubber material. The rubber material facilitates the flexibility of the rubber, allowing the circuit to push the rubber sealing block into the interior of the insulating sleeve. The contraction of the rubber causes the circuit surface to fit against the sealing head, thereby sealing both ends of the insulating sleeve.
[0012] The technical effects and advantages of this utility model are as follows:
[0013] 1. By incorporating reinforcing components, this utility model facilitates the absorption and support of pressure and impact forces during actual use of the insulating sleeve through the support ring and connecting ribs, thereby enhancing the durability of the insulating sleeve under heavy loads or harsh environments and ensuring that the cables or wires inside are not affected by external factors.
[0014] 2. By providing a sealing head, this utility model facilitates the sealing of the cable or conductor surface by the contraction of the joint between the rubber sealing blocks when the cable or conductor passes through the inside of the sleeve body. This seals the contact point between the cable or conductor and the sealing head surface, effectively achieving waterproof and dustproof effects inside the sleeve, thereby improving its insulation performance and preventing internal circuit corrosion. Attached Figure Description
[0015] Figure 1 This is a cross-sectional schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 3 This is a cross-sectional schematic diagram of the main structure of the sleeve of this utility model.
[0018] Figure 4 This is a schematic diagram of the reinforcing component structure of this utility model.
[0019] Figure 5 This is a cross-sectional schematic diagram of the sealing head structure of this utility model.
[0020] The reference numerals in the attached drawings are as follows: 1. Sleeve body; 101. Sleeve cavity; 2. Reinforcing component; 201. Support ring; 202. Connecting rib; 3. Sealing head; 301. Sealing cap; 302. Connecting sleeve; 303. Rubber sealing block; 304. Sleeve joint. Detailed Implementation
[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The bidirectional through-hole insulating sleeve involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] Reference Figures 1-5As shown, this utility model provides a bidirectional through-hole insulating sleeve, including a sleeve body 1. A sleeve cavity 101 is formed inside the sleeve body 1. A reinforcing component 2 is sleeved on the inner wall of the sleeve cavity 101. The reinforcing component 2 includes a support ring 201. Regularly arranged connecting ribs 202 are fixedly sleeved around the circumference of the support ring 201. Sealing heads 3 are movably sleeved at both the upper and lower ends of the sleeve body 1. Each sealing head 3 includes a sealing cover 301. A connecting sleeve 302 is fixedly sleeved inside the sealing cover 301 and on the side closest to the inside of the sleeve body 1. Regularly arranged rubber sealing blocks 303 are formed at the top of the sealing cover 301. Regularly arranged connecting ribs 302 are formed on the adjacent sides of each rubber sealing block 303. The seam 304, with the reinforcement component 2, helps to support and absorb the pressure and impact force received by the insulating sleeve during actual use, through the support ring 201 and the connecting rib 202, thereby enhancing the durability of the insulating sleeve under heavy load or harsh environment, and ensuring that the internal cable or wire is not affected by the outside. With the sealing head 3, when the cable or wire passes through the inside of the sleeve body 1, the joint seam 304 between the rubber sealing blocks 303 shrinks to fit the surface of the cable or wire, thereby sealing the contact position between the cable or wire and the surface of the sealing head 3, so that the inside of the sleeve can effectively achieve waterproof and dustproof effect, thereby improving its insulation performance and avoiding internal circuit corrosion.
[0023] The support ring 201 and the connecting rib 202 are both made of stainless steel. The use of stainless steel in the support ring 201 and the connecting rib 202 helps to enhance the compressive strength of the insulating tube when it is subjected to external impact or pressure, thus preventing the insulating sleeve from being damaged under heavy load or harsh environment.
[0024] Among them, the sealing cap 301 is made of carbon fiber. The carbon fiber material of the sealing cap 301 helps to support both ends of the insulating sleeve, thereby improving the pressure resistance and impact resistance of both ends of the insulating sleeve.
[0025] The connecting sleeve 302 is made of fiber-reinforced composite material. The surface of the connecting sleeve 302 is threaded and the inside of the connecting sleeve 302 is hollow. The threaded surface of the connecting sleeve 302 facilitates the connection between the sealing head 3 and the insulating sleeve, thereby preventing the sealing head 3 from falling off and causing external dust and moisture to enter and corrode the internal circuitry.
[0026] Among them, the rubber sealing block 303 is located in the rubber material. The rubber sealing block 303 is located in the rubber material, which is beneficial to the flexibility of the rubber. The circuit can push the rubber sealing block 303 into the interior of the insulating sleeve, and the contraction of the rubber makes the surface of the circuit fit with the sealing head 3, thereby sealing both ends of the insulating sleeve.
[0027] The working principle of this utility model is as follows: First, when using the sleeve body 1, align one end of the wire to be installed with the adjacent midpoint of the rubber sealing block 303 at the top of the sealing cover 301. Then, as the wire passes through, the joint 304 of the adjacent position of the rubber sealing block 303 is pressed together, and the surface of the wire is wrapped by the rubber sealing block 303. Then, the wire passing through the sealing head 3 is inserted into the inside of the sleeve cavity 101, and then the wire passes through the other end of the sleeve body 1. Then, the wire passes through the connecting sleeve 302 fitted by another sealing cover 301, so that the wire reaches the adjacent midpoint of the rubber sealing block 303 through the connecting sleeve 302 and then exits. Align the connecting sleeve 302 with the two ends of the sleeve body 1, and then rotate the sealing head 3 so that the thread on the surface of the connecting sleeve 302 is rotated and solidly fitted into the two ends of the sleeve body 1. Then, pull and connect the line passing through the sleeve body 1 and the sealing heads 3 at both ends of the sleeve body 1. When the surface of the sleeve body 1 is subjected to external pressure or impact, the force on the surface of the sleeve body 1 is transmitted to the support ring 201 inside the sleeve cavity 101. The support ring 201 then distributes and absorbs the pressure on the sleeve body 1, thereby improving the overall pressure resistance and impact resistance of the sleeve body 1. At the same time, the sealing head 3 enables the sleeve body 1 to achieve the effect of waterproofing and dustproofing.
[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 bidirectional through-type insulating sleeve, comprising a sleeve body (1), characterized in that: The sleeve body (1) has a sleeve cavity (101) inside. A reinforcing component (2) is sleeved on the inner wall of the sleeve cavity (101). The reinforcing component (2) includes a support ring (201). The support ring (201) has regularly arranged connecting ribs (202) fixedly sleeved around its inner perimeter. The sleeve body (1) has sealing heads (3) movably sleeved at both the upper and lower ends. The sealing head (3) includes a sealing cover (301). A connecting sleeve (302) is fixedly sleeved inside the sealing cover (301) and on the side closest to the inside of the sleeve body (1). The sealing cover (301) has a regularly arranged rubber sealing block (303) at its top. The rubber sealing block (303) has a regularly arranged sleeve seam (304) on the adjacent side of each side.
2. The bidirectional through-type insulating sleeve according to claim 1, characterized in that: The support ring (201) and the connecting rib (202) are both made of stainless steel.
3. The bidirectional through-type insulating sleeve according to claim 1, characterized in that: The sealing cap (301) is made of carbon fiber.
4. The bidirectional through-type insulating sleeve according to claim 1, characterized in that: The connecting sleeve (302) is made of fiber-reinforced composite material, and the surface of the connecting sleeve (302) is threaded, and the interior of the connecting sleeve (302) is hollow.
5. The bidirectional through-type insulating sleeve according to claim 1, characterized in that: The rubber sealing block (303) is made of rubber.