Heat-shrinkable insulating sleeve with three-layer structure

Abstract

The utility model relates to the technical field of heat-shrinkable insulating sleeves, in particular to a heat-shrinkable insulating sleeve with a three-layer structure, which comprises an insulating sleeve, the outer surface of the insulating sleeve is fixedly connected with a reinforcing sleeve, and the outer surface of the reinforcing sleeve is fixedly connected with a wear-resistant sleeve; the mounting mechanism is arranged in the insulating sleeve; wherein the mounting mechanism comprises two wire holes which are formed in the inner wall of the insulating sleeve; according to the device, the cable is smoothly guided into the through hole through the wire guide hole, the resistance of the cable moving in the through hole is reduced through the long rod and the ball, the surface of the cable is smoothly sleeved with the insulating sleeve, and compared with the prior art that the insulating sleeve needs to be cut, the cut position is broken apart, and the cable is sleeved with the insulating sleeve, the cable is not prone to falling off. According to the mode, the surface of the insulating sleeve does not need to be cut and damaged, the cable is smoothly sleeved with the insulating sleeve, it is guaranteed that the insulating sleeve is comprehensively attached to the surface of the cable, and then it is guaranteed that the cable is stably installed in the insulating sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkable insulating sleeves, in particular to a heat shrinkable insulating sleeve with a three-layer structure. Background Art

[0002] Heat-shrinkable insulation tubing, also known as heat-shrink tubing or heat-shrink tubing, is a type of insulation tubing that shrinks at high temperatures, is flexible, flame-retardant, and offers insulation and corrosion resistance. When heated, it shrinks and tightly wraps around cable connectors, providing insulation, sealing, and protection. Heat-shrinkable insulation tubing generally consists of an inner layer to protect the insulation of wires and cables, a middle layer that shrinks when heated, allowing it to fit tightly to the wires and cables, and an outer layer that protects the heat-shrink layer while also providing wear resistance, corrosion resistance, and water resistance.

[0003] After searching, the Chinese patent "A weather-resistant 10kV insulating heat shrink protective sleeve" authorization announcement number "CN215265761U" is to bend the left sleeve and the right sleeve to both sides through the cutting part, connect it to the designated cable position and then release it, and insert the raised card into the card slot, which can effectively and quickly install and fix the heat shrink sleeve, avoiding the time-consuming and labor-intensive process of connecting it through the cable end.

[0004] In the above application, when heating the cut portion of the left and right sleeves, the cut portion may not shrink evenly, resulting in a local area not completely adhering to the cable surface, thereby affecting the stability of the cable installed in the heat shrink sleeve.

[0005] Therefore, a three-layer heat shrinkable insulation sleeve is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a three-layer heat shrinkable insulating sleeve in order to solve the above problems, thereby improving the problem that the cut part cannot shrink evenly, resulting in the local area not being completely close to the cable surface.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: a three-layer heat-shrinkable insulating sleeve, comprising: an insulating sleeve, the outer surface of which is fixedly connected to a reinforcement sleeve, the outer surface of which is fixedly connected to a wear-resistant sleeve; an installation mechanism, the installation mechanism being arranged inside the insulating sleeve; wherein the installation mechanism comprises two wire holes opened on the inner wall of the insulating sleeve, the inner wall of the insulating sleeve is provided with a through hole, the wire holes are connected to the through hole, the inner wall of the through hole is fixedly connected to an annularly distributed long rod, the surface of the long rod is rollingly connected to an evenly distributed ball bearing, and the inner wall of the through hole is fixedly connected to a round sleeve. Through the wire holes, the cable is smoothly introduced into the through hole, and through the long rod and the ball bearing, the resistance of the cable to move in the through hole is reduced, so that the insulating sleeve can be smoothly sleeved on the surface of the cable, ensuring that the surface of the insulating sleeve does not need to be cut during the sleeve installation, ensuring that the insulating sleeve is fully and tightly attached to the surface of the cable, and thus ensuring the stability of the cable installed in the insulating sleeve.

[0008] Preferably, an annular reinforcement plate is fixedly connected to the inner wall of the reinforcing sleeve, and the surface of the reinforcement plate is in an "X" shape. The "X"-shaped reinforcement plate enhances the compression resistance of the reinforcing sleeve, facilitates better distribution of the pressure on the reinforcing sleeve, and ensures the service life of the insulating sleeve.

[0009] Preferably, the inner wall of the wire hole is concave in a trumpet shape, and the inner wall of the through hole is concave in an arc shape.

[0010] Preferably, the surface of the insulating sleeve is fixedly connected with annularly distributed connecting blocks, and the surface of the connecting blocks is fixedly connected to the inner wall of the reinforcing sleeve.

[0011] Preferably, two fixing blocks are fixedly connected to the surface of the connecting block, and the surfaces of the fixing blocks are fixedly connected to the inner wall of the reinforcement sleeve. The connecting blocks and the fixing blocks increase the connection area between the insulating sleeve and the reinforcement sleeve, thereby better dispersing the tensile force on the insulating sleeve, preventing local stress concentration, and thereby improving the tensile strength of the insulating sleeve.

[0012] Preferably, the inner wall of the wear-resistant sleeve is fixedly connected to support rings distributed in equal rows, and the wear-resistant sleeve and the support rings are both made of polyvinyl chloride. The support rings enhance the wear resistance of the wear-resistant sleeve and form multiple stress dispersion points inside the wear-resistant sleeve, thereby reducing local stress concentration.

[0013] Preferably, the long rod and the ball are both silicone rubber components.

[0014] The beneficial effects of the utility model are:

[0015] The wire hole enables the cable to be smoothly introduced into the through hole. The long rod and the ball bearing reduce the resistance of the cable to movement in the through hole, allowing the insulating sleeve to be smoothly sheathed on the cable surface. Compared with the existing method that requires cutting the insulating sleeve and breaking the cut part to allow the cable to be sheathed in the insulating sleeve, this method does not require cutting or damaging the surface of the insulating sleeve, allowing the cable to be smoothly sheathed in the insulating sleeve, ensuring that the insulating sleeve is fully and tightly attached to the cable surface, thereby ensuring the stability of the cable installed in the insulating sleeve;

[0016] The "X"-shaped reinforcement plate can enhance the compressive resistance of the reinforcement sleeve, thereby better dispersing the pressure on the reinforcement sleeve and ensuring the service life of the insulating sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the wear-resistant sleeve of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation mechanism structure of the utility model;

[0020] Figure 4 This is a cross-sectional view of the wear-resistant sleeve, reinforcement sleeve and insulation sleeve of the utility model;

[0021] Figure 5 for Figure 2 A magnified view of center.

[0022] In the figure: 1. Insulating sleeve; 2. Reinforcement sleeve; 3. Wear-resistant sleeve; 4. Mounting mechanism; 41. Wire hole; 42. Long rod; 43. Ball; 44. Reinforcement plate; 45. Connecting block; 46. Fixing block; 47. Support ring; 48. Through hole; 49. Round sleeve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] When implementing: Figure 1-5A three-layer heat-shrinkable insulating sleeve is shown, comprising: an insulating sleeve 1, a reinforcing sleeve 2 fixedly connected to its outer surface, a wear-resistant sleeve 3 fixedly connected to its outer surface; and a mounting mechanism 4 disposed within the insulating sleeve 1. The mounting mechanism 4 includes two wire holes 41 formed in the inner wall of the insulating sleeve 1, a through hole 48 formed in the inner wall of the insulating sleeve 1, and the wire holes 41 and through holes 48 communicating with each other. Ring-shaped long rods 42 are fixedly connected to the inner wall of through holes 48, and balls 43 are rollingly connected to the surface of the long rods 42 in an evenly distributed pattern. A circular sleeve 49 is fixedly connected to the inner wall of through hole 48. The inner wall of the wire hole 41 is concave in a trumpet shape, while the inner wall of the through hole 48 is concave in an arc shape. The long rods 42 and balls 43 are both silicone rubber components. The circular sleeve 49 and the insulating sleeve 1 are both silicone rubber components. The insulating sleeve 1, the reinforcing sleeve 2, and the wear-resistant sleeve 3 constitute the insulating sleeve.

[0025] When it is necessary to sheath a specified cable, since the opening diameter of the wire holes 41 is from large to small, the cable can smoothly pass through one of the wire holes 41 and slide into the through hole 48, so that the multiple sets of balls 43 of the silicone rubber components contact the cable surface, push the cable, and make the cable smoothly pass through another wire hole 41 on the multiple sets of balls 43, so that the cable can be smoothly sheathed in the insulating sleeve. At this time, the insulating sleeve is heated, so that the round sleeve 49, the long rod 42 and the balls 43 are heated and shrink and fully wrapped around the cable, so that the wear-resistant sleeve 3 is tightly wrapped on the reinforcement sleeve 2, and the reinforcement sleeve 2 is tightly wrapped on the insulating sleeve 1, so that the cable is tightly attached to the inner wall of the insulating sleeve.

[0026] like Figure 3 As shown, the inner wall of the reinforcement sleeve 2 is fixedly connected with an annularly distributed reinforcement plate 44, and the surface of the reinforcement plate 44 is in an "X" shape.

[0027] like Figure 3 and Figure 5 As shown, the surface of the insulating sleeve 1 is fixedly connected to an annular connection block 45, the surface of the connection block 45 is fixedly connected to the inner wall of the reinforcement sleeve 2, and the surface of the connection block 45 is fixedly connected to two fixing blocks 46, the surface of the fixing block 46 is fixedly connected to the inner wall of the reinforcement sleeve 2. The inner wall of the wear-resistant sleeve 3 is fixedly connected to the support ring 47 distributed in an equal row. The wear-resistant sleeve 3 and the support ring 47 are both polyvinyl chloride components. The support ring 47 includes a first circle and a second circle, the first circle and the second circle are fixedly connected to the inner wall of the reinforcement sleeve 2.

[0028] The connecting block 45 and the fixing block 46 tightly connect the insulating sleeve 1 and the reinforcement sleeve 2. The reinforcement plate 44 with an "X"-shaped surface disperses the pressure on the reinforcement sleeve 2, thereby increasing the overall compressive resistance of the reinforcement sleeve 2 and the insulating sleeve 1, and preventing local stress concentration. The support ring 47 increases the support points inside the wear-resistant sleeve 3, effectively dispersing the performance of the wear-resistant sleeve 3 when facing external impact and pressure, reducing the wear of the wear-resistant sleeve 3, and thereby reducing the damage rate of the reinforcement sleeve 2 and the insulating sleeve 1.

[0029] When the present invention is in use, since the opening diameters of the wire holes 41 are from large to small, the cable can smoothly pass through one of the wire holes 41 and slide into the through hole 48, so that the multiple groups of balls 43 of the silicone rubber components contact the cable surface, push the cable, and make the cable smoothly pass through the other wire hole 41 on the multiple groups of balls 43, so that the cable can be smoothly sleeved in the insulating sleeve. At this time, the insulating sleeve is heated, so that the round sleeve 49, the long rod 42 and the balls 43 are heated and shrink and fully wrapped around the cable, so that the wear-resistant sleeve 3 is tightly wrapped on the reinforcement sleeve 2, and the reinforcement sleeve 2 is tightly wrapped on the insulating sleeve 1, so that the cable is tightly attached to the inner wall of the insulating sleeve.

[0030] It should be noted that the insulating sleeve 1 , the reinforcing sleeve 2 and the wear-resistant sleeve 3 in the above description are all relatively mature devices in existing technology and will not be described in detail here.

[0031] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A three-layer heat shrinkable insulating sleeve, characterized in that: include: An insulating sleeve (1), wherein the outer surface of the insulating sleeve (1) is fixedly connected to a reinforcing sleeve (2), and the outer surface of the reinforcing sleeve (2) is fixedly connected to a wear-resistant sleeve (3); A mounting mechanism (4), the mounting mechanism (4) being arranged inside the insulating sleeve (1); The mounting mechanism (4) includes two wire holes (41) formed on the inner wall of the insulating sleeve (1), a through hole (48) formed on the inner wall of the insulating sleeve (1), the wire holes (41) being connected to the through hole (48), the inner wall of the through hole (48) being fixedly connected to a long rod (42) distributed in an annular manner, the surface of the long rod (42) being rollingly connected to balls (43) distributed in equal rows, and the inner wall of the through hole (48) being fixedly connected to a circular sleeve (49).

2. The three-layer heat shrinkable insulating sleeve according to claim 1, characterized in that: An inner wall of the reinforcement sleeve (2) is fixedly connected to an annularly distributed reinforcement plate (44), and the surface of the reinforcement plate (44) is in an "X" shape.

3. The three-layer heat shrinkable insulating sleeve according to claim 1, characterized in that: The inner wall of the wire hole (41) is concave in a trumpet shape, and the inner wall of the through hole (48) is concave in an arc shape.

4. The three-layer heat shrinkable insulating sleeve according to claim 1, characterized in that: The surface of the insulating sleeve (1) is fixedly connected to an annularly distributed connection block (45), and the surface of the connection block (45) is fixedly connected to the inner wall of the reinforcement sleeve (2).

5. The three-layer heat shrinkable insulating sleeve according to claim 4, characterized in that: Two fixing blocks (46) are fixedly connected to the surface of the connecting block (45), and the surfaces of the fixing blocks (46) are fixedly connected to the inner wall of the reinforcement sleeve (2).

6. The three-layer heat shrinkable insulating sleeve according to claim 1, characterized in that: The inner wall of the wear-resistant sleeve (3) is fixedly connected to support rings (47) distributed in equal rows, and the wear-resistant sleeve (3) and the support rings (47) are both polyvinyl chloride components.

7. The three-layer heat shrinkable insulating sleeve according to claim 1, characterized in that: The long rod (42) and the ball (43) are both silicone rubber components.

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