A waterproof insulated double-contact cold-pressed terminal

Abstract

The utility model provides a waterproof insulated double-contact cold-pressed terminal, comprising a sleeve, a metal tube, and a filler; the sleeve is sleeved on the outside of the metal tube; the filler is located in the gap between the metal tube and the waterproof insulating material; the metal sleeve is provided with an isolation point, which is located in the middle of the metal tube; two crimping positions are respectively provided between the isolation point and the two tube openings of the metal tube; the crimping positions are located on the metal tube. Since the length of the sleeve and the metal tube is lengthened, a filler is added between the metal tube and the sleeve, and the crimping method of the wire core and the metal tube is improved to double-contact crimping, the reliability of the terminal is improved; the influence of the heat shrinking process on the cable conductor is reduced, and the safety of the cold-pressed terminal during use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connection, in particular to a waterproof and insulated double-contact cold-pressed terminal. Technical Background

[0002] Terminal blocks are an accessory product used to achieve electrical connections. They are industrially classified into connectors and are widely used in railways, telecommunications, aerospace, and communications. With the development of the electronics industry, there are more and more types of terminals.

[0003] The most frequently used in daily life is the heat shrink relay tube, which includes a heat-shrinkable insulating tube and a single-point crimped copper tube. Its length is generally between 28 and 30 mm, and the length of the copper tube is generally 15 mm. Due to the relatively simple structure of the heat shrink relay tube, a single-point crimping method is used to fix the joint and the copper tube. The wiring personnel are prone to improper crimping during operation, resulting in a loose connection between the crimping position and the wire core, which leads to a reduction in the circuit service life and stability. At the same time, the insulating tube of the commonly used heat shrink relay tube is too short at both ends of the copper tube. When the line needs to be moved during wiring, the copper wire at the interface is easily loosened and exposed, seriously affecting the safety of circuit use. In reality, some working environments and some specifications of cable conductors do not allow the use of heat sources to heat the shrink tube, so the heat shrink relay tube is not applicable in this case. Utility Model Content

[0004] In view of the above problems, the utility model provides a waterproof, insulated, double-contact cold-pressed terminal, which not only optimizes the length of the insulating sleeve and the copper tube, improves the safety of the terminal, but also optimizes the crimping method and heat shrinkage process, thereby enhancing the reliability and universality of the terminal.

[0005] To achieve the above objectives, this experimental novel provides the following technical solutions:

[0006] A waterproof, insulated, double-contact cold-pressed terminal, comprising a sleeve, a metal tube and a filler; an identification line is marked on the outer wall of the sleeve, the sleeve comprises a metal tube, the outer surface of the metal tube fits with the inner wall of the sleeve, and is fixed to each other by the friction between the outer surface of the metal tube and the inner surface of the sleeve; the metal tube comprises two crimping positions and an isolation point, the two crimping positions are respectively located on both sides of the isolation point of the metal tube, and the distances between the isolation point and the tube mouth are equal, and the copper core of the cable conductor and the metal tube in the terminal are closely contacted by double-point crimping to form a metal penetration surface layer with excellent conductivity; the isolation point inside the metal tube is a V-shaped metal strip opening downward, the two ends of the metal strip are connected to the inner wall of the metal tube, and a window for viewing the inside of the tube is opened at the part connecting the metal tube, the material used for the isolation point is consistent with that of the metal tube, and the filler is filled between the metal tube mouth and the sleeve mouth after the terminal is cold-pressed;

[0007] Furthermore, the sleeve is a hollow long cylinder, made of nylon translucent material, which has a certain elasticity and can be used by wiring personnel to adjust the position of the metal tube;

[0008] Further, the filler is a corrosion-resistant, waterproof, insulating material;

[0009] Furthermore, the sleeve has a length of 3.6 mm, an outer diameter of 4 to 5 mm, and an inner diameter of 1.5 to 1.7 mm;

[0010] Furthermore, the metal tube has a length of 2.1 to 2.6 mm, an outer diameter range of 2.9 to 3.2 mm, and an inner diameter range of 1.5 to 2.7 mm;

[0011] Furthermore, the isolation point and the metal tube are an integrated structure, and the width of the isolation point is no more than 1 mm;

[0012] Furthermore, the window width is no greater than 1 mm;

[0013] Furthermore, the distance between the two ends of the sleeve exposed from the metal tube is not less than 5 mm;

[0014] Furthermore, the metal material of the metal tube is a cheap metal with excellent conductivity such as copper, aluminum, tin, etc.

[0015] Furthermore, the filler is a linear polymer material such as silicone grease, PE plastic, etc.

[0016] In a specific embodiment of the present utility model, the metal tube is a metal tube;

[0017] In a specific embodiment of the present utility model, the filler is organic silicone grease;

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: the waterproof insulating double-contact cold-pressed terminal achieves the purpose of better protecting the copper core of the cable conductor by lengthening the length of the sleeve; the length of the copper tube is lengthened, and special tools are used to perform double-contact crimping to improve the reliability of the terminal; waterproof insulating material is injected into the waterproof insulating double-contact cold-pressed terminal to further improve the waterproof, moisture-proof and insulating capabilities of the terminal; the heat shrinkage process is optimized, and the filler is heated and melted and then injected into the gap between the sleeve and the metal tube, thereby avoiding direct contact of the cable conductor with the heat source, improving the speed of construction and connection, and broadening the scope of application of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the effect picture of the waterproof insulated double-contact cold-pressed terminal connected to the cable conductor;

[0020] Figure 2 It is a cross-sectional view of a waterproof insulated double-contact cold-pressed terminal;

[0021] Figure 3 This is the left side view of the waterproof insulated double-contact cold-pressed terminal.

[0022] In the figure: 1. casing; 2. metal tube; 3. filler; 4. crimping position; 5. isolation point; 6. window. DETAILED DESCRIPTION

[0023] The following describes the preferred implementation of the utility model with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The utility model can be embodied in many different forms of implementation, and the protection scope of the utility model is not limited to the implementation mentioned in the text.

[0024] In the drawings, components with the same structure are indicated by the same numerical numerals, and components with similar structures or functions are indicated by similar numerical numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and in order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0025] See also Figure 1 The utility model waterproof insulated double-contact cold-pressed terminal mainly consists of a transparent plastic sleeve 1, a metal tube 2 and a filler 3 added therebetween. The filler 3 is a corrosion-resistant, waterproof and anti-electric material. The sleeve 1 is sleeved in the middle position inside the metal tube 2. The metal tube 2 is provided with a crimping position 4 and an isolation point 5. The lower part of the metal tube 2 includes a window 6, which can be used to check whether the cable copper core is located in the isolation position. The isolation point 5 is located in the central position of the metal tube. There is a marking line on the outside of the sleeve indicating that the vertical distances from both sides of the sleeve to the circular line are equal.

[0026] The isolation point 5 inside the metal tube 2 is a V-shaped metal strip with an opening facing downward, and the viewing window 6 is a long strip-shaped notch.

[0027] See also Figure 2 and Figure 3 The metal tube 2 includes two crimping positions 4 and an isolation point 5. The crimping positions 4 are located on the outer wall of the metal tube 2, respectively on both sides of the isolation point 5, and the distance to the isolation point is equal to the distance to the port. The isolation point 5 is integrally connected to the inside of the metal tube 2 and is a V-shaped metal strip opening downward. The material of the metal strip is the same as that of the metal tube 2. The horizontal distance between the two pipe openings of the metal tube 2 and the pipe opening of the sleeve 1 is equal.

[0028] In this embodiment,

[0029] Metal pipes are metal pipes;

[0030] The filling material is organic silicone grease;

[0031] Isolation point width 0.8mm;

[0032] When using, the wire core area is 1.5mm 2 The object is the wiring to be connected. The specific specifications of the waterproof and insulated double-contact cold-pressed terminals used are: the length of the sleeve 1 is 3.6mm, the outer diameter is 4mm, the inner diameter is 1.5mm, the length of the metal tube 2 is 2.1mm, the outer diameter is 2.9mm, the inner diameter is 1.5mm, and the window width is 0.8mm. The organic silicone grease with good viscosity, waterproofness, insulation, corrosion resistance and high temperature resistance is used as the filler.

[0033] First, place the prepared filler 5 in the syringe, adjust the position of the metal tube 2 in the sleeve 1, align the window 6 on the metal tube 2 with the marking line on the sleeve, and then put two wire cores with an exposed length of 5 mm through the sleeve 1 in advance and into the crimping position 4 of the metal tube 2. After observing from the position of the window 6 that the two wire core ports are located tightly on both sides of the isolation point 5, use the crimping tool to perform cold crimping on the two crimping positions 4, and use a syringe to inject the filler 3 into the gap between the wiring insulation protection layer and the sleeve 1. Stop injecting when the filler 3 fills the gap. After the filler 3 solidifies, the wiring of the waterproof insulated double-contact cold-pressed terminal is completed.

[0034] The wiring completed by the waterproof insulated double-contact cold-pressed terminal has a horizontal distance between the exposed position of the core wire and the pipe mouth of the casing greater than 5mm; the multimeter was used to measure various parts of the cold-pressed terminal, and no leakage position was measured; the double-contact crimping process was used, and the cold-pressed terminal and the wire core had no obvious deformation and displacement under a tensile force of 10N. When both ends of the terminal were placed in water, the current could be conducted normally.

[0035] The above describes in detail the preferred specific implementation of the utility model. It should be understood that ordinary technology in the field can make many modifications and changes according to the concept of the utility model without creative work. Therefore, any technical solution that can be obtained by a technician in the technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A waterproof insulated double-contact cold-pressed terminal, characterized in that: The invention comprises a sleeve (1), a metal tube (2), and a filler (3); the sleeve (1) is sleeved in the middle position inside the metal tube (2); the metal tube (2) is provided with a crimping position (4) and an isolation point (5); the isolation point (5) is located in the middle position inside the metal tube; the crimping position (4) is located on the metal tube (2); the filler (3) is filled in the gap between the sleeve (1) and the metal tube (2) and the gap between the sleeve (1) and the wiring; The sleeve (1) is made of a translucent nylon material, and has an identification line on the outer wall of the sleeve (1); the metal tube (2) is a highly conductive seamless metal tube; the filler (3) is made of a corrosion-resistant, waterproof and anti-electrical material; the number of the crimping positions (4) is two, which are respectively located on both sides of the center of the metal tube (2) and on the outer surface of the copper tube.

2. The waterproof insulated double-contact cold-pressed terminal according to claim 1, characterized in that: The distance between the two ends of the sleeve (1) exposed from the metal tube (2) is not less than 5 mm.

3. The waterproof insulated double-contact cold-pressed terminal according to claim 2, characterized in that: The outer diameter of the sleeve (1) is 4-5 mm, the inner diameter is 1.5-1.7 mm, the length is 3.6 mm, and the marking line is the middle line of the sleeve.

4. The waterproof insulated double-contact cold-pressed terminal according to claim 3, characterized in that: The isolation point (5) inside the metal tube (2) is a V-shaped metal strip with an angle of opening downward, and a viewing window (6) for viewing the inside of the copper tube is opened in the metal tube (2) below the isolation point (5). The viewing window (6) is a long strip-shaped notch, and the openings at both ends of the metal strip are integrally connected to the two ends of the viewing window (6).

5. The waterproof insulated double-contact cold-pressed terminal according to claim 4, characterized in that: The metal tube (2) has a length of 2.1 to 2.6 mm, an outer diameter of 2.9 to 3.2 mm, and an inner diameter of 1.5 to 2.7 mm.

6. The waterproof insulated double-contact cold-pressed terminal according to claim 5, characterized in that: The width of the isolation point (5) is no greater than 1 mm, and the width of the window (6) is no greater than 1 mm.

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