An electrical sheath sleeve
By combining a double-layer sheath design with a polyester release film tube, the problem of insecure locking at the wire connection point is solved, resulting in a more secure and convenient wire connection, and enhancing the stability and protective effect of the wire connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李讪汀
- Filing Date
- 2025-09-02
- Publication Date
- 2026-06-19
AI Technical Summary
Existing electrical conduit sleeves are not securely fastened at wire connections and are inconvenient to use.
The sheath uses a double-layer structure, with an adhesive storage cavity formed between the inner and outer tubes. When the inner tube breaks, the adhesive will flow out from the gap. Combined with a polyester release film tube, it prevents adhesive leakage. During use, the free sheet can be heated to shrink and strengthen the fastening.
It achieves a robust connection at the wire joint and ease of use, enhancing the stability and protective effect of the wire connection.
Smart Images

Figure CN224385052U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical consumables technology, specifically to electrical sheaths and sleeves. Background Technology
[0002] Electrical sheathing includes a sheath body, referred to as the sheath. The sheath is a tubular structure made of thermoplastic material, such as a plastic tube. In use, the sheath is placed over the wire connection and heated with fire. The plastic tube shrinks and deforms, and the sheath tightly wraps around the wire connection, providing good protection for the wire at the wrapped area.
[0003] In existing technologies, the locking of the sleeve onto the wire relies solely on heating the sleeve with fire, causing the plastic tube to shrink and deform, which has the disadvantage of weak adhesion. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned shortcomings by providing an electrical sheath that allows for a more secure connection and is easier to use.
[0005] The technical solution adopted by this utility model is as follows: an electrical sheath, including a sheath body, wherein the sheath is a tubular structure made of thermoplastic material, and the sheath body has a cavity inside. The sheath is characterized in that: the sheath includes an inner tube and an outer tube, the inner tube and the outer tube are connected on the side to form a cavity between the inner tube and the outer tube, the cavity is a glue storage cavity, and there is a paste-like adhesive in the glue storage cavity.
[0006] Furthermore, the inner tube has multiple slits, and when not under pressure, the adhesive is inside the adhesive storage cavity; when under pressure, the adhesive oozes out from the slits.
[0007] Furthermore, at both ends of the casing body, there are free blades formed by the extension of the casing body.
[0008] Furthermore, a polyester release film tube is installed inside the cavity.
[0009] The beneficial effects of this utility model are: such an electrical sheath sleeve has the advantages of making the connection more secure and convenient to use. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the external structure of this utility model.
[0011] Figure 2 This is a longitudinal sectional view of the present invention. (Showing the polyester release film tube)
[0012] Figure 3 This is a schematic diagram of the longitudinal section structure of this utility model (the polyester release film tube is not shown).
[0013] The components include: 1. Sleeve body; 11. Inner tube; 12. Outer tube; 13. Glue storage cavity; 14. Adhesive; 15. Gap; 16. Free sheet; 2. Lumen; 3. Polyester release film tube; 4. Non-woven fabric. Detailed Implementation
[0014] The present invention will be further described below with reference to the accompanying drawings.
[0015] like Figure 1 , 2 As shown in Figure 3, an electrical sheath includes a sheath body 1. The sheath is a tubular structure made of thermoplastic material. The sheath body has a cavity 2 inside. The sheath is characterized in that: the sheath includes an inner tube 11 and an outer tube 12. The inner tube and the outer tube are connected on the side to form a cavity between them. This cavity is a glue storage cavity 13, and there is also a paste-like adhesive 14 in this glue storage cavity.
[0016] In principle, when using this invention, the sleeve is placed over the outside of the wire connection. Squeezing the outside of the sleeve by hand often causes the inner sleeve to crack. For example, if the thickness of the inner sleeve is less than that of the outer sleeve, it is more likely to crack when squeezed by hand. Alternatively, if the wire connection has an end that can pierce the inner sleeve, the adhesive will leak out. The adhesive then serves its bonding purpose, achieving the intended function of this invention.
[0017] For example, the adhesive can be the adhesive with publication number "CN114716968A" entitled "An Organosilicon Adhesive", or the adhesive with publication number "CN103254863B" entitled "A Latent Single-Component LCD Encapsulation Adhesive"; other adhesives can also be used, as long as they are paste-like. For use on electrical components, it is best to use electrical component adhesives, such as insulating adhesives.
[0018] In one technical solution, the thickness of the inner tube is less than the thickness of the outer tube.
[0019] Furthermore, the inner tube has multiple slits 15, in which the adhesive is stored in the cavity when not under pressure, and when under pressure, the adhesive oozes out from the slits.
[0020] With this design, the adhesive can easily flow out from the gaps.
[0021] Furthermore, at both ends of the casing body, there are free pieces 16 formed by the casing body.
[0022] With this design, the sleeve can be installed at the connection point of the wire during use. Alternatively, the free sheet can be baked first to shrink, and then the sleeve can be squeezed. This design allows for a more compact installation on the wire.
[0023] Furthermore, a polyester release film tube 3 is installed inside the tube cavity.
[0024] The aforementioned polyester release film tube is a tube made of polyester release film tube material. This polyester release film tube is not bonded to the adhesive. This design also has the advantage of preventing adhesive leakage. The polyester release film tube can be removed during installation.
[0025] In one technical solution, a non-woven fabric 4 for storing adhesive is placed inside the adhesive storage cavity, and the adhesive is impregnated in the non-woven fabric. This arrangement of the present invention can also achieve the effect of maintaining good storage of the adhesive within the adhesive storage cavity.
[0026] In the description of this utility model, it should be understood that the term "installation" can be direct installation or indirect installation, and the terms "upper" and "lower", as well as the qualifiers before components, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
Claims
1. An electrical sheath, comprising a sheath body, wherein the sheath is a tubular structure made of thermoplastic material, and the sheath body has an internal cavity, characterized in that: The sleeve includes an inner tube and an outer tube. The inner tube and the outer tube are connected at their sides, forming a cavity between them. This cavity is a glue storage cavity, and there is also a paste-like adhesive inside this glue storage cavity.
2. The electrical sheathing sleeve according to claim 1, characterized in that: The inner tube has multiple slits, and when not compressed, the adhesive is inside the adhesive storage cavity; when compressed, the adhesive seeps out from the slits.
3. The electrical sheathing sleeve according to claim 1, characterized in that: At both ends of the casing body, there are also free plates formed by the extension of the casing body.
4. The electrical sheathing sleeve according to claim 1, characterized in that: There is also a polyester release film tube installed inside the cavity.