PVC heat-shrinkable sleeve with flame retardancy

Abstract

The utility model relates to PVC heat shrinkable sleeve field especially a kind of PVC heat shrinkable sleeve with flame retardance, it include: PVC heat shrinkable sleeve body is provided with the chamber that penetrates;Connecting sleeve is set in the inside of the front end of the PVC heat shrinkable sleeve body, the outer wall of the connecting sleeve is placed with traceless adhesive, the front end of the connecting sleeve is fixed with connecting sleeve, the front end of the connecting sleeve is fixed with small necking;Wherein the connecting sleeve with the PVC heat shrinkable sleeve body is snap connection, the traceless adhesive about the center of connecting sleeve is annular shape distribution.By the sleeve joint connection between protective sleeve one, protective sleeve two and PVC heat shrinkable sleeve body, so that protective sleeve one, protective sleeve two can be wrapped in the outer wall of PVC heat shrinkable sleeve body, reduce the contact area of PVC heat shrinkable sleeve body and other objects, guarantee the integrity of PVC heat shrinkable sleeve body.

Description

Technical Field

[0001] This utility model relates to the field of PVC heat shrink tubing technology, and in particular to a flame-retardant PVC heat shrink tubing. Background Technology

[0002] PVC heat shrink tubing is a type of heat shrink tubing made of PVC material. It is flexible and elastic, shrinking when heated to 70-90℃ (standard type) or above 98℃ (transparent type). It is widely used for insulation protection of various wire harnesses, solder joints, and inductors, as well as for rust and corrosion prevention of metal pipes and rods. Specifications range from Φ2 to Φ200, with temperature resistance divided into two main series: 85℃ and 105℃, complying with EU RoHS environmental standards. This material also has wide applications in construction, telecommunications, and lighting, commonly used for wire wrapping and tool rod outer covering.

[0003] The core defect of the existing technology is that contact between the outer surfaces of the PVC heat shrink tubing and objects increases wear on the PVC heat shrink tubing, leading to cracks. At the same time, during assembly, improper fixing can cause the PVC heat shrink tubing to loosen and fall off. Utility Model Content

[0004] The purpose of this utility model is to provide a flame-retardant PVC heat-shrinkable sleeve, which aims to solve the problem of PVC heat-shrinkable sleeve cracking due to inadequate protection in the above-mentioned technical problems.

[0005] The technical solution adopted in this utility model is as follows: A flame-retardant PVC heat-shrinkable sleeve, comprising: The PVC heat-shrinkable sleeve body has a through-cavity. A connecting sleeve is disposed inside the front end of the PVC heat shrinkable sleeve body. The outer wall of the connecting sleeve is covered with a traceless adhesive sticker. A connecting sleeve is fixed to the front end of the connecting sleeve, and a small constriction is fixed to the front end of the connecting sleeve. The connecting sleeve and the PVC heat-shrinkable sleeve body are connected by a snap-fit ​​connection, and the traceless adhesive is distributed in a ring shape about the center of the connecting sleeve.

[0006] This utility model also has the following technical features: In one embodiment of this utility model, a protective sleeve is installed on the outer side of the PVC heat shrinkable sleeve body, and the protective sleeve is evenly distributed around the outer wall of the PVC heat shrinkable sleeve body.

[0007] In one embodiment of this utility model, protective sleeves are installed at both ends of the outer side of the PVC heat-shrinkable sleeve body.

[0008] In one embodiment of this utility model, the interior of the second protective sleeve contains flame-retardant material, and the thickness of the flame-retardant material is half the thickness of the second protective sleeve.

[0009] In one embodiment of this utility model, the inner wall of the protective sleeve 2 is provided with an anti-slip pad.

[0010] In one embodiment of this utility model, the shape and structure of the second protective sleeve match the shape and structure of the first protective sleeve, and both the second protective sleeve and the first protective sleeve are connected to the PVC heat shrinkable sleeve body by a sleeve connection.

[0011] In one embodiment of the present invention, the outer wall of the protective sleeve 2 is provided with a movable fitting rope, and the movable fitting rope is arc-shaped.

[0012] In one embodiment of this utility model, the movable fitting rope and the protective sleeve are connected by adhesive.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: Through the sleeve connection between the first and second protective sleeves and the PVC heat-shrinkable sleeve body, the first and second protective sleeves can wrap around the outer wall of the PVC heat-shrinkable sleeve body, reducing the contact area between the PVC heat-shrinkable sleeve body and other objects, ensuring the integrity of the PVC heat-shrinkable sleeve body. The adhesive tape adheres to the inside of the PVC heat-shrinkable sleeve body, facilitating the fixing of the connecting sleeve and effectively preventing loosening and detachment between the connecting sleeve and the PVC heat-shrinkable sleeve body. The use of flame-retardant materials significantly reduces the risk of fire, and the flame-retardant properties of the materials allow the PVC heat-shrinkable sleeve body to be used in more high-temperature and high-risk environments, ensuring both insulation and meeting fire safety standards. The movable, attachable binding rope facilitates the connection of the PVC heat-shrinkable sleeve body to other items, making it easy to position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main three-dimensional structure of a flame-retardant PVC heat-shrinkable sleeve in one embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of a connecting sleeve for a flame-retardant PVC heat-shrinkable sleeve in one embodiment of the present invention; Figure 3 This is a two-dimensional structural diagram of a protective sleeve with flame-retardant PVC heat-shrinkable sleeve in one embodiment of the present invention.

[0015] Explanation of icon numbers: 10. PVC heat shrinkable sleeve body; 11. Protective sleeve one; 12. Protective sleeve two; 20. Connecting sleeve; 21. Residue-free adhesive tape; 22. Connecting sleeve; 23. Small necking; 30. Flame-retardant material; 31. Anti-slip mat; 32. Flexible binding rope. Detailed Implementation

[0016] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0017] The illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0018] It should be noted that the core defect of an existing flame-retardant PVC heat-shrinkable sleeve is that contact between the outer surfaces of the PVC heat-shrinkable sleeve and objects increases wear and tear, leading to breakage. Furthermore, during assembly, inadequate fixing can cause the sleeves to loosen and detach. To address this, a flame-retardant PVC heat-shrinkable sleeve is proposed, comprising a PVC heat-shrinkable sleeve body 10 with a through-cavity; a connecting sleeve 20 disposed inside the front end of the PVC heat-shrinkable sleeve body 10; a traceless adhesive patch 21 is placed on the outer wall of the connecting sleeve 20; a connecting sleeve 22 is fixed to the front end of the connecting sleeve 20; and a small constriction 23 is fixed to the front end of the connecting sleeve 22. The connecting sleeve 20 and the PVC heat-shrinkable sleeve body 10 are interlocked, and the traceless adhesive patch 21 is distributed in a ring shape around the center of the connecting sleeve 20.

[0019] In one embodiment, a protective sleeve 11 is installed on the outside of the PVC heat shrinkable sleeve body 10. The protective sleeve 11 is evenly distributed on the outer wall of the PVC heat shrinkable sleeve body 10. The traceless adhesive 21 is bonded to the inside of the PVC heat shrinkable sleeve body 10, which facilitates the fixing of the connecting sleeve 20 and effectively prevents the connecting sleeve 20 from loosening and falling off from the PVC heat shrinkable sleeve body 10.

[0020] In one embodiment, protective sleeves 12 are installed at both ends of the outer side of the PVC heat shrinkable sleeve body 10. Through the sleeve connection between the protective sleeves 11 and 12 and the PVC heat shrinkable sleeve body 10, the protective sleeves 11 and 12 can wrap around the outer wall of the PVC heat shrinkable sleeve body 10, reducing the contact area between the PVC heat shrinkable sleeve body 10 and other objects, and ensuring the integrity of the PVC heat shrinkable sleeve body 10.

[0021] In one embodiment, the interior of the second protective sleeve 12 contains a flame-retardant material 30, the thickness of which is half the thickness of the second protective sleeve 12. The use of the flame-retardant material 30 can significantly reduce the risk of fire. At the same time, the flame-retardant properties of the flame-retardant material 30 allow the PVC heat-shrinkable sleeve body 10 to be used in more high-temperature and high-risk environments, ensuring both insulation and meeting fire protection standards.

[0022] In one embodiment, the flame retardant material 30 may be composed of one or more of flame retardant polyvinyl chloride (ZR-PVC), irradiated cross-linked polyethylene (XLPE), or low-smoke halogen-free materials to form the flame retardant material 30 described above.

[0023] In one embodiment, the inner wall of the second protective sleeve 12 is provided with an anti-slip pad 31.

[0024] In one embodiment, the shape and structure of the second protective sleeve 12 match the shape and structure of the first protective sleeve 11, and both the second protective sleeve 12 and the first protective sleeve 11 are connected to the PVC heat shrinkable sleeve body 10 by a sleeve connection.

[0025] In one embodiment, the outer wall of the protective sleeve 2 12 is provided with a movable fitting rope 32, which is arc-shaped.

[0026] In one embodiment, the movable adhesive binding rope 32 and the protective sleeve 12 are connected by adhesive. The movable adhesive binding rope 32 facilitates the connection of the PVC heat shrinkable sleeve body 10 to other items and makes positioning easier.

[0027] In one embodiment, see Figure 1 and Figure 2 Place the connecting sleeve 20 inside the PVC heat shrinkable sleeve body 10 and press them together so that the traceless adhesive 21 on the outer wall of the connecting sleeve 20 can contact the inner wall of the PVC heat shrinkable sleeve body 10, thereby positioning them and effectively preventing the connecting sleeve 20 from loosening and falling off from the PVC heat shrinkable sleeve body 10.

[0028] In one embodiment, the protective sleeve 11 and the protective sleeve 2 12 are connected to the PVC heat shrinkable sleeve body 10 through a sleeve connection, so that the protective sleeve 11 and the protective sleeve 2 12 can wrap around the outer wall of the PVC heat shrinkable sleeve body 10, thereby reducing the contact area between the PVC heat shrinkable sleeve body 10 and other objects and ensuring the integrity of the PVC heat shrinkable sleeve body 10.

[0029] In another embodiment, see Figure 3 The use of flame-retardant material 30 can significantly reduce the risk of fire. At the same time, the flame-retardant properties of flame-retardant material 30 enable the PVC heat-shrinkable sleeve body 10 to be used in more high-temperature and high-risk environments, ensuring both insulation and meeting fire protection standards. The movable and fitting binding rope 32 makes it easy to connect the PVC heat-shrinkable sleeve body 10 to other items and facilitates positioning.

[0030] In summary, the flame-retardant PVC heat-shrinkable sleeve of this utility model is connected to the PVC heat-shrinkable sleeve body 10 through the sleeve connection between the protective sleeve 11 and the protective sleeve 22. This allows the protective sleeve 11 and the protective sleeve 22 to wrap around the outer wall of the PVC heat-shrinkable sleeve body 10, reducing the contact area between the PVC heat-shrinkable sleeve body 10 and other objects, ensuring the integrity of the PVC heat-shrinkable sleeve body 10. The adhesive 21 is bonded to the inside of the PVC heat-shrinkable sleeve body 10, which facilitates the fixing of the connecting sleeve 20 and effectively prevents the connecting sleeve 20 from loosening and falling off from the PVC heat-shrinkable sleeve body 10.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flame-retardant PVC heat-shrinkable sleeve, characterized in that, include: The PVC heat-shrinkable sleeve body (10) is provided with a through chamber; A connecting sleeve (20) is disposed inside the front end of the PVC heat shrinkable sleeve body (10). The outer wall of the connecting sleeve (20) is provided with a traceless adhesive sticker (21). A connecting sleeve (22) is fixed to the front end of the connecting sleeve (20). A small constriction (23) is fixed to the front end of the connecting sleeve (22). The connecting sleeve (20) and the PVC heat shrinkable sleeve body (10) are connected by a snap-fit ​​connection, and the traceless adhesive tape (21) is distributed in a ring shape about the center of the connecting sleeve (20).

2. The flame-retardant PVC heat-shrinkable sleeve according to claim 1, characterized in that, A protective sleeve (11) is installed on the outside of the PVC heat shrinkable sleeve body (10), and the protective sleeve (11) is evenly distributed on the outer wall of the PVC heat shrinkable sleeve body (10).

3. The flame-retardant PVC heat-shrinkable sleeve according to claim 1, characterized in that, Protective sleeves (12) are installed at both ends of the outer side of the PVC heat shrinkable sleeve body (10).

4. A flame-retardant PVC heat-shrinkable sleeve according to claim 3, characterized in that, The interior of the second protective sleeve (12) contains flame-retardant material (30), the thickness of which is half the thickness of the second protective sleeve (12).

5. A flame-retardant PVC heat-shrinkable sleeve according to claim 3, characterized in that, The inner wall of the second protective sleeve (12) is provided with an anti-slip pad (31).

6. A flame-retardant PVC heat-shrinkable sleeve according to claim 3, characterized in that, The shape and structure of the second protective sleeve (12) match the shape and structure of the first protective sleeve (11). Both the second protective sleeve (12) and the first protective sleeve (11) are connected to the PVC heat shrinkable sleeve body (10) by a sleeve connection.

7. A flame-retardant PVC heat-shrinkable sleeve according to claim 3, characterized in that, The outer wall of the second protective sleeve (12) is provided with a movable fitting rope (32), which is arc-shaped.

8. A flame-retardant PVC heat-shrinkable sleeve according to claim 7, characterized in that, The active fitting rope (32) and the protective sleeve (12) are connected by adhesive.

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