Silicone rubber insulation cold shrink tube with high sealing performance

Abstract

The utility model discloses a silicone rubber insulation cold shrink tube with high sealing performance, which comprises a cold shrink tube body and a supporting piece arranged in the cold shrink tube body, and thickened end parts are formed on the outer side walls of the left end and the right end of the cold shrink tube body. The supporting piece is a plastic strip-shaped piece which is spirally coiled to be in a barrel shape, and the outer side wall of the supporting piece abuts against the inner side wall of the cold contraction pipe body in a pressing mode. Thickened end parts are formed on the outer side walls of the two ends of the anti-drop cable connector, so that the contraction elastic force of the two ends is improved, the pressing effect is improved when the end parts are pressed against the connecting ends of the cable, the anti-drop effect is further improved, and the anti-drop cable connector has a scratch-proof effect.

Description

Technical field:

[0001] The utility model relates to the technical field of cold shrink tubes, and more specifically to a high-sealability silicone rubber insulation cold shrink tube. Background technology:

[0002] Cold shrink cable accessories are made of elastomeric materials (commonly used are silicone rubber and EPDM rubber) which are injection vulcanized in the factory, and then expanded and lined with plastic spiral supports to form various cable accessory components.

[0003] During on-site installation, the inner support of the cold shrink tube is put on the treated cable end or joint, and the internal support is pulled out. The internal support is a plastic spiral strip. As it is gradually pulled out, the elastic material of the pulled-out part elastically recovers and presses on the cable insulation. After all the internal support parts are taken out, the elastic material will adhere to the cable to achieve a sealed connection.

[0004] However, after the end support of the cold shrink tube is pulled out, its end will shrink first, and since the contact area of ​​the attached part is limited, the shrinkage force is also limited. At this time, the cold shrink tube is easy to detach from the connection end.

[0005] Meanwhile, the outer wall surface of the existing cold shrink tube body is smooth and of average thickness. When in use, when the surface is not easily scratched by a hard object, it is easily damaged and its sealing and insulating effect is affected. Utility model content:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-sealability silicone rubber insulating cold shrink tube, which has thickened ends formed on the outer side walls at both ends to improve the shrinkage elastic force of the two ends, so that when the ends are pressed against the connecting ends of the cable, the compression effect is improved, the anti-slip effect is further improved, and it has an anti-scratch effect.

[0007] The solution of the utility model to solve the technical problem is:

[0008] A high-sealing silicone rubber insulation cold shrink tube comprises a cold shrink tube body and a support member arranged inside, wherein thickened ends are formed on the outer side walls of the left and right ends of the cold shrink tube body, and the thickened ends improve the shrinkage elastic force of the two ends.

[0009] The support member is a plastic strip member which is spirally wound into a cylindrical shape, and its outer side wall is pressed against the inner side wall of the cold shrink tube body.

[0010] A plurality of reinforcement parts are formed on the outer side wall of the cold shrink tube body between the two thickened ends, and the reinforcement parts improve the anti-scratch effect of the cold shrink tube body.

[0011] The reinforcement portion is a long raised strip extending along the axial direction of the cold shrink tube body.

[0012] The cross section of the elongated raised strip is in a trapezoidal shape.

[0013] The cold shrink tube body is a silicone rubber body.

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

[0015] The outer side walls of both ends are formed with thickened ends to increase the shrinkage elastic force of the two ends, so that when the ends are pressed against the connecting ends of the cables, the compression effect is improved, and the anti-slip effect is further improved;

[0016] Its long raised strip can increase the thickness of part of the outer wall of the cold shrink tube body. When it is cut by external hardware, it can be prevented from scratching the wall surface of the cold shrink tube body through the blocking of the long raised strip, thereby ensuring its sealing and insulation effect, and it has an anti-scratch effect. Description of the drawings:

[0017] Figure 1 It is a partial cross-sectional view of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model at a changed angle. Specific implementation method:

[0019] For example, see Figure 1 to Figure 2 As shown, a high-sealing silicone rubber insulation cold shrink tube includes a cold shrink tube body 10 and a support member 20 provided inside, and thickened end portions 11 are formed on the outer side walls of the left and right ends of the cold shrink tube body 10. The outer side wall of the thickened end portion 11 is a conical wall surface, and the outer diameter of the outer end is large and the outer diameter of the inner end is small.

[0020] This thickened end 11 can increase the shrinkage force of the end of the cold shrink tube body 10, so that when it is in use, after the support piece 20 at the end is removed, the pressure of the inner wall of the end of the cold shrink tube body 10 pressing against the outer wall of the corresponding cable connection end increases, thereby increasing the firmness of its pressing and clamping, greatly improving the anti-slip effect, and facilitating subsequent installation.

[0021] Furthermore, the support member 20 is a plastic strip member spirally wound into a cylindrical shape, and its outer side wall is pressed against the inner side wall of the cold shrink tube body 10.

[0022] A plurality of reinforcement portions 12 are formed on the outer side wall of the cold shrink tube body 10 between the two thickened end portions 11 .

[0023] The reinforcement portion 12 is a long raised strip extending along the axial direction of the cold shrink tube body 10 .

[0024] All the long raised strips are evenly distributed on the outer side wall of the cold shrink tube body 10 with the central axis of the cold shrink tube body 10 as the center.

[0025] The cross section of the elongated raised strip is in a trapezoidal shape.

[0026] All the reinforcement parts 12 improve the strength of the entire shrink tube body 10, and when a hard object from the outside rubs or scratches the outer wall of the shrink tube body 10, it is blocked by the reinforcement parts 12, and only friction or scratches will occur on the surface of the reinforcement parts 12, and the wall of the shrink tube body 10 will not be damaged, thereby ensuring its sealing and insulation effects, and it has an anti-scratch effect.

[0027] The cold shrink tube body 10 is a silicone rubber body.

[0028] All the long raised strips are evenly distributed on the outer wall of the cold shrink tube body 10 with the central axis of the cold shrink tube body 10 as the center, that is, all the long raised strips are evenly distributed on the outer wall surface of the cold shrink tube body 10, so that the protection effect is better and the protection range is uniform.

[0029] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A high-sealing silicone rubber insulation cold shrink tube, comprising a cold shrink tube body (10) and a support member (20) provided inside, characterized in that: Thickened end portions (11) are formed on the outer side walls at the left and right ends of the cold shrink tube body (10).

2. The high-sealability silicone rubber insulation cold shrink tube according to claim 1, characterized in that: The support member (20) is a plastic strip member spirally wound into a cylindrical shape, and its outer side wall is pressed against the inner side wall of the cold shrink tube body (10).

3. The high-sealability silicone rubber insulation cold shrink tube according to claim 1, characterized in that: The outer side wall of the thickened end portion (11) is a conical wall surface, with a larger outer diameter at the outer end and a smaller outer diameter at the inner end.

4. The high-sealability silicone rubber insulation cold shrink tube according to claim 1, characterized in that: A plurality of reinforcement portions (12) are formed on the outer side wall of the cold shrink tube body (10) between the two thickened end portions (11).

5. The high-sealability silicone rubber insulation cold shrink tube according to claim 4, characterized in that: The reinforcement portion (12) is a long raised strip extending along the axial direction of the cold shrink tube body (10).

6. The high-sealability silicone rubber insulation cold shrink tube according to claim 5, characterized in that: All the long raised strips are evenly distributed on the outer side wall of the cold shrink tube body (10) with the central axis of the cold shrink tube body (10) as the center.

7. The high-sealability silicone rubber insulation cold shrink tube according to claim 5, characterized in that: The cross section of the elongated raised strip is in a trapezoidal shape.

8. The high-sealability silicone rubber insulation cold shrink tube according to claim 1, characterized in that: The cold shrink tube body (10) is a silicone rubber body.

9. The high-sealability silicone rubber insulation cold shrink tube according to claim 1, characterized in that: The two ends of the support member (20) extend out from the left and right ends of the cold shrink tube body (10).

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