A shielded wire heat shrink terminal

Abstract

The present invention provides a shielded wire heat shrink terminal, which specifically relates to the field of heat shrink terminal production, including a heat shrink tube, a connecting tube and a plurality of tin rings, wherein the heat shrink tube is gathered in a dumbbell shape in the middle, the connecting tube is made of heat shrink tube material, the connecting tube can be inserted into the heat shrink tube, and a metal terminal is arranged at the end of the connecting tube; the tin rings are closely arranged in the heat shrink tube. The present invention is not only convenient and reliable in connection, but also waterproof and highly insulating, and the size of the tin ring in the heat shrink tube can be adjusted to meet the connection requirements of different shielded wires.

Description

Technical Field

[0001] The invention belongs to the field of heat shrink terminal production, and in particular relates to a shielded wire heat shrink terminal. Background Art

[0002] Shielded cable is a transmission line that uses a metal mesh braided layer to wrap the signal line. The braided layer is generally red copper or tinned copper. The shielding layer of the shielded cable needs to be grounded, and external interference signals can be conducted to the ground by this layer; shielded cable is a kind of wire with a metal braided shell specially used to reduce the impact of external electromagnetic fields on power or communication lines. Traditional shielded cable connections are generally achieved directly through connectors, but the waterproof and insulation performance of such connectors needs to be strengthened; although existing heat shrink terminals are used for electrical line connections, they do not have certain insulation, waterproof, and stress protection functions. The existing heat shrink terminals have tin rings in the heat shrink tube, and the structure is single, which cannot meet the needs of modular use;

[0003] In view of the above shortcomings, a shielded wire heat shrink terminal is now needed, which is not only convenient and reliable in connection, but also waterproof and has high insulation. The size of the tin ring in the heat shrink tube can be adjusted to meet the connection requirements of different shielded wires. Summary of the invention

[0004] The purpose of the present invention is to provide a shielded wire heat shrink terminal, which can adjust the size of the tin ring in the heat shrink tube to meet the connection requirements of different shielded wires.

[0005] The present invention provides the following technical solutions:

[0006] A shielded wire heat shrink terminal comprises a heat shrink tube, a connecting tube and a plurality of tin rings. The heat shrink tube is gathered in the middle into a dumbbell shape. The connecting tube is made of a heat shrink tube material and can be inserted into the heat shrink tube. A metal terminal is arranged at the end of the connecting tube. The tin rings are closely arranged in the heat shrink tube.

[0007] Preferably, there are rubber rings on the inner sides of both ends of the heat shrink tube, the diameter of the rubber ring is 1 to 10 mm, the wall thickness of the rubber ring is 0.2 to 1 mm, and the tin ring can pass through the rubber ring.

[0008] Preferably, the tin ring is in the shape of a hollow column as a whole, the diameter of the tin ring is 1 to 10 mm, the wall thickness of the tin ring is 0.2 to 1 mm, and the height of the tin ring is 1 to 5 mm.

[0009] Preferably, the periphery of the tin ring is provided with two limiting grooves, and the limiting grooves are symmetrically arranged on the upper and lower sides of the tin ring.

[0010] Preferably, the limiting groove is a strip-shaped groove, and the limiting groove is arranged along the axial direction of the tin ring.

[0011] Preferably, the inner ring of the tin ring is provided with an annular positioning groove along the circumferential direction, and also includes a matching tin ring removing device, the tin ring removing device is composed of two parallel axes, one end of the two axes is closed and connected, and the other end of the two axes extends outward, and the extended part of the tin ring removing device can be embedded in the positioning groove.

[0012] Preferably, the tin ring removal device is an integrally formed structure using polytetrafluoroethylene.

[0013] Preferably, the heat shrink tube is made of Teflon or perfluoropropylene, and the rubber ring is made of nylon or EVA or EAA.

[0014] Preferably, the heat shrink tube has an inner diameter of 1 to 10 mm and a length of 5 to 50 mm.

[0015] Beneficial effects of the present invention:

[0016] The present invention plays the role of waterproofing and insulation through the connecting tube and the heat shrink tube, thereby improving the waterproofing and insulation effects; by closely arranging the tin rings in the heat shrink tube, by changing the number of the tin rings, and then changing the covering area of ​​the tin rings, the requirements for the covering area of ​​different shielding wire connections are met, thereby improving the convenience of use and increasing the application range of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is the external structure diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the tin ring;

[0020] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0021] The markings in the figure are: 1. heat shrink tube; 2. tin ring; 3. positioning groove; 4. limiting groove; 5. tin ring removal device; 6. rubber ring; 7. connecting tube; 8. metal terminal. DETAILED DESCRIPTION

[0022] Embodiment 1:

[0023] like Figures 1 to 3As shown, a shielded wire heat shrink terminal includes a heat shrink tube 1, a connecting tube 7 and a plurality of tin rings 2. The heat shrink tube 1 is gathered in a dumbbell shape in the middle, the connecting tube 7 is made of heat shrink tube material, the connecting tube 7 can be inserted into the heat shrink tube 1, and a metal terminal 8 is provided at the end of the connecting tube 7; the tin rings 2 are closely arranged in the heat shrink tube 1. There are rubber rings 6 on the inner side of both ends of the heat shrink tube 1, the diameter of the rubber ring 6 is 1 to 10 mm, and the wall thickness of the rubber ring 6 is 0.2 to 1 mm. This size value can meet the normal working requirements of the component, and the tin ring 2 can pass through the rubber ring 6.

[0024] Working method of embodiment 1:

[0025] Adjust the number of tin rings 2 and the arrangement size of tin rings 2 to a suitable size, put one end of a shielded wire into the connecting tube 7; the other shielded wire passes through the heat shrink tube 1 and is connected to the metal terminal 8; when connecting, pass through the through hole of the metal terminal 8 to ensure a secure connection; insert the connecting tube 7 into the heat shrink tube 1, and ensure that the tin ring 2 is covered at the connection of the other shielded wire to ensure the connection reliability and conductive performance; shrink the connecting tube 7 and the heat shrink tube 1 by external heat to achieve connection;

[0026] Embodiment 2:

[0027] A shielded wire heat shrink terminal comprises a heat shrink tube 1, a connecting tube 7 and a plurality of tin rings 2. The heat shrink tube 1 is gathered in a dumbbell shape in the middle. The connecting tube 7 is made of heat shrink tube material and can be inserted into the heat shrink tube 1. The end of the connecting tube 7 is provided with a metal terminal 8. The tin rings 2 are closely arranged in the heat shrink tube 1. There are rubber rings 6 on the inner sides of both ends of the heat shrink tube 1. The diameter of the rubber ring 6 is 1 to 10 mm, the wall thickness of the rubber ring 6 is 0.2 to 1 mm, and the tin ring 2 can pass through the rubber ring 6. The tin ring 2 is in a hollow cylindrical shape as a whole. The diameter of the tin ring 2 is 1 to 10 mm, the wall thickness of the tin ring 2 is 0.2 to 1 mm, and the height of the tin ring 2 is 1 to 5 mm. The size values ​​can meet the normal working requirements of the component. The periphery of the tin ring 2 is provided with two limiting grooves 4, which are symmetrically arranged on the upper and lower sides of the tin ring. The limiting grooves 4 are strip-shaped grooves, and the limiting grooves 4 are arranged along the axial direction of the tin ring 2. The contact area can be increased through the limiting grooves 4, thereby improving the reliability of the connection of the tin ring 2.

[0028] Working method of embodiment 2:

[0029] Adjust the number of tin rings 2, adjust the arrangement size of tin rings 2 to a suitable size, put one end of a shielded wire into the connecting tube 7; the other shielded wire passes through the heat shrink tube 1 and is connected to the metal terminal 8; when connecting, pass through the through hole of the metal terminal 8 to ensure a secure connection; insert the connecting tube 7 into the heat shrink tube 1, and ensure that the tin ring 2 is covered at the connection of the other shielded wire to ensure the connection reliability and conductivity; shrink the connecting tube 7 and the heat shrink tube 1 through external heat to achieve connection; after the heat shrink tube 1 shrinks, the contact area can be increased through the limit groove 4, thereby improving the reliability of the connection of the tin ring 2.

[0030] Embodiment 3:

[0031] A shielded wire heat shrink terminal comprises a heat shrink tube 1, a connecting tube 7 and a plurality of tin rings 2. The heat shrink tube 1 is gathered in a dumbbell shape in the middle, the connecting tube 7 is made of heat shrink tube material, the connecting tube 7 can be inserted into the heat shrink tube 1, a metal terminal 8 is arranged at the end of the connecting tube 7, and the tin rings 2 are closely arranged in the heat shrink tube 1. There are rubber rings 6 on the inner sides of both ends of the heat shrink tube 1, the diameter of the rubber ring 6 is 1 to 10 mm, the wall thickness of the rubber ring 6 is 0.2 to 1 mm, and the size value can meet the normal working requirements of the component, and the tin ring 2 can pass through the rubber ring 6. The tin ring 2 is in the shape of a hollow cylinder as a whole, the diameter of the tin ring 2 is 1 to 10 mm, the wall thickness of the tin ring 2 is 0.2 to 1 mm, and the height of the tin ring 2 is 1 to 5 mm. Two limit grooves 4 are arranged on the periphery of the tin ring 2, and the limit grooves 4 are symmetrically arranged on the upper and lower sides of the tin ring. The limit groove 4 is a strip groove, and the limit groove 4 is arranged along the axial direction of the tin ring 2. The inner ring of the tin ring 2 is provided with an annular positioning groove 3 along the circumferential direction, and also includes a matching tin ring removal device 5, which is composed of two parallel shafts, one end of the two shafts is closed and connected, and the other end of the two shafts extends outward, and the extended part of the tin ring removal device 5 can be embedded in the positioning groove 3. The tin ring removal device 5 is an integrated molding structure using polytetrafluoroethylene, which can avoid scratching the tin ring, and the integrated molding has a long service life; the heat shrink tube 1 is made of Teflon or perfluoropropylene, and the rubber ring 6 is made of nylon or EVA or EAA, which are corrosion-resistant, have good insulation and long service life. The inner diameter of the heat shrink tube 1 is 1 to 10 mm, and the length is 5 to 50 mm, which can meet the normal working requirements of the component.

[0032] Working method of embodiment 3:

[0033] Put the two legs of the tin ring device 5 together so that the ends of the tin rings are embedded in the positioning grooves 3 of the tin rings 2, and then put it into the heat shrink tube 1, adjust the number of tin rings 2, adjust the arrangement size of the tin rings 2 to a suitable size, and put one end of a shielded wire into the connecting tube 7; the other shielded wire passes through the heat shrink tube 1 and is connected to the metal terminal 8; when connecting, pass through the through hole of the metal terminal 8 to ensure a secure connection; insert the connecting tube 7 into the heat shrink tube 1, and ensure that the tin ring 2 is covered at the connection of the other shielded wire to ensure the connection reliability and conductivity; shrink the connecting tube 7 and the heat shrink tube 1 by external heat to achieve connection; after the heat shrink tube 1 shrinks, the contact area can be increased through the limiting groove 4, thereby improving the reliability of the connection of the tin ring 2.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shielded wire heat shrink terminal, characterized in that: It comprises a heat shrink tube, a connecting tube and a plurality of tin rings. The middle of the heat shrink tube is gathered into a dumbbell shape. The connecting tube is made of a heat shrink tube material and can be inserted into the heat shrink tube. A metal terminal is arranged at the end of the connecting tube. The tin rings are closely arranged in the heat shrink tube. By closely arranging the tin rings in the heat shrink tube and changing the number of the tin rings, the covering area of ​​the tin rings is changed, thereby meeting the requirements of the covering area of ​​different shielding wire connection locations. The inner ring of the tin ring is provided with an annular positioning groove along the circumferential direction, and also includes a matching tin ring removal device, the tin ring removal device is composed of two parallel shafts, one end of the two shafts is closed and connected, and the other end of the two shafts extends outward, and the extended part of the tin ring removal device can be embedded in the positioning groove; Wherein, the heat shrink tube is made of Teflon or perfluoropropylene, and the inner diameter of the heat shrink tube is 1 to 10 mm and the length is 5 to 50 mm.

2. A shielded wire heat shrink terminal according to claim 1, characterized in that: There are rubber rings on the inner sides of both ends of the heat shrink tube, the diameter of the rubber ring is 1 to 10 mm, the wall thickness of the rubber ring is 0.2 to 1 mm, and the tin ring can pass through the rubber ring.

3. A shielded wire heat shrink terminal according to claim 2, characterized in that: The tin ring is in the shape of a hollow column as a whole, the diameter of the tin ring is 1 to 10 mm, the wall thickness of the tin ring is 0.2 to 1 mm, and the height of the tin ring is 1 to 5 mm.

4. A shielded wire heat shrink terminal according to claim 3, characterized in that: The periphery of the tin ring is provided with two limiting grooves, and the limiting grooves are symmetrically arranged on the upper and lower sides of the tin ring.

5. A shielded wire heat shrink terminal according to claim 4, characterized in that: The limiting groove is a strip-shaped groove, and the limiting groove is arranged along the axial direction of the tin ring.

6. The shielded wire heat shrink terminal according to claim 1, characterized in that: The tin ring removal device is an integrally formed structure made of polytetrafluoroethylene.

7. A shielded wire heat shrink terminal according to claim 2, characterized in that: The rubber ring is made of nylon, EVA or EAA.

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