Double-clamping type cold end lead joint of resistance wire

Abstract

The application discloses a double-face combined holding type cold end lead wire joint of resistance wire, which comprises a lead wire terminal, the lead wire terminal is composed of two joint metal sheets, the side edges of the two joint metal sheets are integrally fixed and formed, the two adjacent joint metal sheets are provided with an opening angle with the opposite inner wall surfaces reserved, the opposite positions of the inner side walls of the two adjacent joint metal sheets are respectively provided with grooves for holding and clamping the resistance wire, the integrally formed side edges of the two joint metal sheets are provided with an outlet opening penetrating the inner and outer surfaces of the joint metal sheets, the outlet opening is communicated with the front end of the groove, and the tail end of the groove is provided with a horn mouth; the lead wire terminal is provided in a double-face combined holding mode, the lead wire contact area and the lead wire efficiency are improved, and the lead wire damage of the resistance wire is effectively prevented.

Description

Technical Field

[0001] This invention specifically relates to a terminal block, and more specifically to a double-sided, cold-end lead connector for resistance wires. Background Technology

[0002] Cold-section lead connectors, as a type of terminal block, are mainly used for connecting the ends of wire harnesses. The resistance wire of the wire harness is often connected to the terminal block by wrapping and spot welding. However, the connection between the resistance wire and the terminal block is not tight, and insufficient contact can easily lead to arcing. The connection efficiency is low, which means that a lot of time is spent connecting the resistance wire and the terminal block. Traditional wrapping or pressing connection methods can easily cause damage and deformation of the resistance wire, resulting in inconsistent yield rates.

[0003] Therefore, to address this type of problem, we need a cold-end lead connector for resistance wires that can effectively improve the connection efficiency and quality between the resistance wire and the terminal block. Summary of the Invention

[0004] The purpose of this invention is to provide a double-sided, closed-end cold-end connector for resistance wires to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A double-sided, cold-end lead connector for resistance wire includes a lead terminal, which is composed of two connector metal plates. The sides of the two connector metal plates are integrally fixed. The inner walls of the two adjacent connector metal plates have pre-reserved openings at an angle. Grooves for clamping and holding the resistance wire are respectively formed on the inner side walls of the two adjacent connector metal plates. The integrally formed sides of the two connector metal plates have protrusions that penetrate the inner and outer surfaces of the connector metal plates. The protrusions communicate with the front end of the grooves. The rear end of the grooves has a flared opening that communicates with the bottom edge of the connector metal plates.

[0007] As a further aspect of the present invention: the protrusion is a rectangular opening with a width greater than the width of the groove.

[0008] As a further embodiment of the present invention: the groove is a semi-circular groove in cross-section.

[0009] As a further embodiment of the present invention: the groove is inclinedly formed on the inner wall of the connector metal sheet, and a welding area is reserved on the inner wall of the connector metal sheet for spot welding of the inner walls of adjacent connector metal sheets.

[0010] As a further aspect of the present invention, the included angle is in the range of 35°-45°.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The contact area between the resistance wire and the lead terminal has been increased, and grooves have been placed on the lead terminal to prevent damage and deformation of the resistance wire;

[0013] 2. The lead terminals adopt a double-sided clamping method, which firstly ensures double-sided contact, and secondly, since the two halves of the lead terminals are connected together, there is no need to reassemble them, thus improving efficiency.

[0014] 3. Leaving a flared opening at the end of the groove can ensure that the resistance wire will not be damaged or deformed when soldering the lead terminals;

[0015] 4. Leave an opening on the other side of the lead terminal. The excess resistance wire can be melted off during soldering and soldered to the middle connection of the lead terminal.

[0016] 5. The entire groove is placed at an angle, which leaves an area on the terminal surface for spot welding, strengthens the connection, and prevents arcing caused by poor contact between the resistance wire and the lead terminal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the double-sided, closed-end cold-end lead connector for resistance wire.

[0018] Figure 2 This is a schematic diagram of the structure of the connector metal plates being pressed together in the double-sided clamping cold end lead connector of the resistance wire.

[0019] Figure 3 This is a schematic diagram of the structure of the double-sided clamped cold end lead connector of the resistance wire during the pressing process.

[0020] Figure 4 This is a schematic diagram of the double-sided, closed-end cold-end connector of the resistance wire when the resistance wire is inserted.

[0021] In the diagram: 1. Connector metal plate; 2. Lead wire groove; 3. Flared mouth; 4. Protrusion; 5. Resistance wire. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-4In this embodiment of the invention, a double-sided clamping cold-end lead connector for a resistance wire includes a lead terminal. The lead terminal is composed of two connector metal plates 1. The sides of the two connector metal plates 1 are integrally fixed. The inner walls of the two adjacent connector metal plates 1 are reserved with an included angle of opening. Grooves 2 for clamping and holding the resistance wire 5 are respectively provided on the inner side walls of the two adjacent connector metal plates 1. The integrally formed sides of the two connector metal plates 1 are provided with protrusions 4 that penetrate the inner and outer surfaces of the connector metal plates 1. The protrusions 4 communicate with the front end of the grooves 2. The tail end of the grooves 2 is provided with a flared mouth 3, which communicates with the bottom edge of the connector metal plates 1. The flared mouth 3 can ensure that the resistance wire 5 will not be damaged or deformed during lead terminal welding.

[0024] The protrusion 4 is a rectangular opening with a width greater than that of the groove 2. The protrusion 4 is reserved with a certain width to ensure the tightness of the welding of the end of the resistance wire 5 at the protrusion 4 to the connector metal piece 1, and to prevent the resistance wire 5 from being damaged or deformed during spot welding.

[0025] The groove 2 is inclinedly formed on the inner wall of the connector metal sheet 1, and a welding area is reserved on the inner wall of the connector metal sheet 1 for spot welding of adjacent connector metal sheets 1.

[0026] The groove 2 is a semi-circular groove. Two adjacent semi-circular grooves can hold the resistance wire 5 in place on both sides. First, it ensures double-sided contact between the resistance wire 5 and the lead terminal. Second, since the grooves 2 are opposite to each other, when the connector metal plate 1 is pressed, the grooves 2 automatically hold the resistance wire 5 on both sides without needing to be reassembled, thus improving the efficiency of the connection between the resistance wire 5 and the connector metal plate 1.

[0027] The included angle ranges from 35° to 45°.

[0028] The working principle of this invention is as follows: In use, the connector metal piece 1 is inserted upwards into the groove 2 from the flared opening 3, and the front end of the resistance wire 5 protrudes through the protrusion 4. Then, the inner sidewalls of the two connector metal pieces 1 are pressed together and then welded tightly in the spot welding area. At the protrusion 4, the front end of the resistance wire 5 is welded to the connector metal piece 1 using laser welding or argon arc welding to form a single unit, thereby realizing the connection operation between the resistance wire 5 and the lead terminal. The groove 2 increases the contact area between the resistance wire 5 and the lead terminal, and also prevents damage and deformation of the resistance wire 5. The lead terminal is double-sided. The clasping design ensures double-sided contact and improves efficiency because the two halves of the lead terminals are connected together, eliminating the need for reassembly. A flared opening 3 at the end of the groove 2 prevents damage or deformation of the resistance wire during lead terminal welding. An extension opening 4 on the other side of the lead terminal allows excess resistance wire 5 to be melted during welding and welded to the center connection of the lead terminal. The angled placement of the entire groove 2 provides an area for spot welding on the lead terminal surface, strengthening the connection and preventing arcing caused by weak contact between the resistance wire 5 and the lead terminal.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] 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 double-sided, snap-fit ​​cold-end lead connector for resistance wire, comprising lead terminals, characterized in that, The lead terminal is composed of two connector metal plates (1). The sides of the two connector metal plates (1) are integrally fixed. The two adjacent connector metal plates (1) have an included angle with an opening on their inner wall surfaces. The inner sidewalls of the two adjacent connector metal plates (1) are respectively provided with grooves (2) for holding and clamping the resistance wire (5). The grooves (2) are inclinedly opened on the inner wall of the connector metal plate (1). The inner wall of the connector metal plate (1) has a reserved welding area for spot welding of the inner walls of adjacent connector metal plates (1). The two connector metal pieces (1) are integrally formed with an extension opening (4) that penetrates the inside and outside of the connector metal pieces (1). At the extension opening (4), the front end of the resistance wire (5) is welded to the connector metal piece (1) by laser welding or argon arc welding. The protrusion (4) is connected to the front end of the groove (2), and the rear end of the groove (2) is provided with a flared mouth (3), which is connected to the bottom edge of the connector metal piece (1).

2. The double-sided clamping cold-end lead connector for resistance wire according to claim 1, characterized in that, The protrusion (4) is a rectangular opening with a width greater than that of the groove (2).

3. The double-sided clamping cold-end lead connector for resistance wire according to claim 1, characterized in that, The groove (2) is a semi-circular groove in cross section.

4. The double-sided clamping cold-end lead connector for resistance wire according to claim 1, characterized in that, The included angle ranges from 35° to 45°.

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