Wire terminal and terminal wiring structure

Abstract

The application provides a wiring terminal and a terminal wiring structure, the wiring terminal comprising a terminal body and a coiled body; the terminal body comprises a wiring part and an electrical connection part for connecting with an electrical device, the wiring part is provided with an accommodation cavity for accommodating a wire, and a side wall of the accommodation cavity is provided with a plug-in slot; the coiled body is rotatably sleeved outside the wiring part, and the coiled body is provided with a crimping unit, which can extend to the inside of the accommodation cavity through the plug-in slot. Through the application, the technical problems that the operation of connecting the wire with the terminal is time-consuming and laborious, and it is difficult to ensure the stability of the connection are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical connection, in particular to a terminal and a terminal wiring structure. BACKGROUND

[0002] The wire harness is a transmission medium of power supply and signal, and the wire is the main component of the wire harness. The wire and the electrical element are electrically connected through the terminal.

[0003] At present, the connection mode of the terminal and the wire is usually crimping and welding, which respectively needs to use corresponding crimping equipment or welding equipment, and needs to be operated in a specific processing site.

[0004] Due to the condition restriction, in some maintenance or wire harness installation operations, the crimping equipment or the welding equipment cannot be used. In this case, only manual tools can be used for crimping or welding, which is time-consuming and laborious, and it is difficult to guarantee the stability of the connection between the terminal and the wire.

[0005] Therefore, the field of electrical connection urgently needs a terminal which can directly and stably connect the wire and the terminal without using the crimping equipment or the welding equipment, so as to save time and labor, facilitate operation and save cost. SUMMARY

[0006] The purpose of the present application is to provide a terminal and a terminal wiring structure to alleviate the technical problems of time-consuming and laborious operation for connecting the wire and the terminal, and difficulty in guaranteeing the stability of the connection.

[0007] The above-mentioned purpose of the present application can be realized by adopting the following technical scheme:

[0008] The present application provides a terminal, comprising: a terminal body and a roll-shaped body; the terminal body comprises a terminal part and an electrical connection part for connecting with an electrical device, the terminal part is provided with an accommodation cavity for accommodating a wire, and a side wall of the accommodation cavity is provided with a plug-in slot; the roll-shaped body is rotatably sleeved outside the terminal part, the roll-shaped body is provided with a crimping unit, and the crimping unit can extend to the inside of the accommodation cavity through the plug-in slot.

[0009] In a preferred embodiment, the ratio of the circumference of the roll-shaped body to the circumference of the terminal part is in the range of 75%-100%.

[0010] In a preferred embodiment, the ratio of the axial length of the roll-shaped body to the axial length of the terminal part is in the range of 5%-100%.

[0011] In a preferred embodiment, the roll-shaped body comprises a roll-shaped plate, the roll-shaped plate extends around the outer circumference of the terminal part, and the crimping unit is formed on the end of the roll-shaped plate.

[0012] In a preferred embodiment, the roll-shaped body comprises a first cylinder body, the first cylinder body is distributed with the roll-shaped plate along the axial direction of the roll-shaped body, and the first cylinder body is fixedly connected with the roll-shaped plate.

[0013] In a preferred embodiment, two sides of the roll-shaped plate are fixedly connected with the first cylinder body.

[0014] In a preferred embodiment, the roll-shaped body comprises a second cylinder body, one end of the crimping unit is fixedly connected to the inner wall of the second cylinder body.

[0015] In a preferred embodiment, the crimping unit is at least partially located in the insertion slot, and the overhanging end of the crimping unit has a tendency to extend to the inside of the accommodation cavity.

[0016] In a preferred embodiment, the inner side wall of the crimping unit is provided with a protruding part, and / or the outer side wall of the crimping unit is provided with a protruding part.

[0017] In a preferred embodiment, the end of the crimping unit extending into the accommodation cavity is provided with a chamfer or a round corner.

[0018] In a preferred embodiment, the crimping unit has a fixed end and an overhanging end, the fixed end is fixedly connected to the roll-shaped body, and the thickness of the crimping unit gradually decreases from the fixed end to the overhanging end.

[0019] In a preferred embodiment, the volume of the part of the crimping unit extending into the accommodation cavity accounts for 1%-45% of the volume of the accommodation cavity.

[0020] In a preferred embodiment, the length of the crimping unit in the axial direction of the roll-shaped body accounts for 5%-95% of the length of the roll-shaped body in the axial direction.

[0021] In a preferred embodiment, the ratio of the maximum thickness of the crimping unit to the width of the insertion slot is in the range of 10%-50%.

[0022] In a preferred embodiment, the roll-shaped body is provided with a plurality of circumferentially distributed crimping units.

[0023] In a preferred embodiment, a plurality of the crimping units are uniformly distributed along the circumference of the roll-shaped body.

[0024] In a preferred embodiment, the accommodation cavity is a cylindrical cavity, a circular truncated cone cavity, a multi-prism cavity or a multi-prism truncated cone cavity.

[0025] In a preferred embodiment, the insertion slot has an insertion slot side wall extending along the axial direction of the wire connection part, and the two opposite insertion slot side walls are parallel to each other.

[0026] In a preferred embodiment, the insertion slot has a slot center plane and an insertion slot side wall extending along the axial direction of the terminal portion, the slot center plane passing through the center axis of the accommodating cavity, and the included angle between the insertion slot side wall and the slot center plane ranges from 0° to 45°.

[0027] In a preferred embodiment, the insertion slot has a slot center plane and an insertion slot side wall extending along the axial direction of the terminal portion, the slot center plane passing through the center axis of the accommodating cavity, and the included angle between the insertion slot side wall and the slot center plane ranges from 0° to 45°.

[0028] In a preferred embodiment, the outer wall of the terminal portion is provided with a retreat-preventing slot, and the roll-shaped body is provided with a retreat-preventing mechanism having an inward extending tendency.

[0029] In a preferred embodiment, the inner wall of the roll-shaped body is provided with a retreat-preventing slot, and the terminal portion is provided with a retreat-preventing mechanism having an outward extending tendency.

[0030] In a preferred embodiment, the retreat-preventing mechanism is a retreat-preventing piece.

[0031] In a preferred embodiment, the retreat-preventing mechanism is a springing mechanism having elasticity.

[0032] In a preferred embodiment, the roll-shaped body comprises a rotating force applying portion, and the rotating force applying portion comprises a plurality of force applying planes.

[0033] In a preferred embodiment, the material of the terminal body contains one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

[0034] In a preferred embodiment, the material of the terminal body contains a tellurium copper alloy, and the content of tellurium in the tellurium copper alloy ranges from 0.1% to 5%.

[0035] In a preferred embodiment, the material of the terminal body contains a beryllium copper alloy, and the content of beryllium in the beryllium copper alloy ranges from 0.05% to 5%.

[0036] In a preferred embodiment, the material of the terminal body contains a phosphorus bronze alloy, and the content of phosphorus in the phosphorus bronze alloy ranges from 0.01% to 1.5%.

[0037] In a preferred embodiment, the material of the terminal body contains a lead brass alloy, and the content of lead in the lead brass alloy ranges from 0.1% to 5%.

[0038] In a preferred embodiment, the material of the terminal body contains one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

[0039] In a preferred embodiment, the material of the roll-shaped body is different from the material of the terminal body.

[0040] In a preferred embodiment, at least part of the surface of the terminal body is provided with a plating layer, and / or at least part of the surface of the roll-shaped body is provided with a plating layer.

[0041] In a preferred embodiment, at least part of the surface of the terminal body exposed to contact with the wire, and / or at least part of the surface of the roll-shaped body exposed to contact with the wire, is bare.

[0042] In a preferred embodiment, the plating layer of the terminal body is different in material from the plating layer of the roll-shaped body.

[0043] In a preferred embodiment, the plating layer of the terminal body is different in thickness from the plating layer of the roll-shaped body.

[0044] In a preferred embodiment, the plating layer material contains one or more of nickel, cadmium, manganese, zirconium, cobalt, tin, titanium, chromium, gold, silver, zinc, tin-lead alloy, silver-antimony alloy, palladium, palladium-nickel alloy, graphite-silver, graphene-silver, hard silver, and silver-gold-zirconium alloy.

[0045] The present application provides a terminal wiring structure, comprising: a wire and the above-mentioned wiring terminal;

[0046] The wire is inserted into the accommodation cavity, and the crimping unit extends into the accommodation cavity through the insertion slot and is in contact with the wire.

[0047] In a preferred embodiment, the wire is a flexible conductor, the wire includes a plurality of metal wires, and the crimping unit at least partially extends between the plurality of metal wires.

[0048] In a preferred embodiment, the wire is a rigid conductor, and there is a gap between the wire and the inner wall of the accommodation cavity, and the crimping unit at least partially extends into the gap.

[0049] In a preferred embodiment, the material of the core of the wire contains one or more of aluminum, phosphorus, tin, copper, iron, manganese, chromium, titanium, and lithium.

[0050] In a preferred embodiment, the sum of the initial volume of the portion of the wire located in the accommodation cavity and the initial volume of the portion of the crimping unit entering the accommodation cavity is greater than or equal to the initial volume of the accommodation cavity.

[0051] In a preferred embodiment, the maximum radial cross-sectional area of the crimping unit after being in contact with the wire is greater than or equal to the maximum radial cross-sectional area of the accommodation cavity.

[0052] The characteristics and advantages of the present application are:

[0053] The wire is inserted into the accommodating cavity, as shown in Figure 3 The rotating of the roll-shaped body relative to the wiring portion drives the crimping unit to extend into the accommodating cavity through the insertion slot, and the crimping unit, the wire in the accommodating cavity and the side wall of the accommodating cavity are extruded, so that the wire and the wiring portion are crimped together.

[0054] The wiring terminal, by the extrusion force of the crimping unit, the wire and the wiring portion are in close contact and are not easy to come off, the contact area is large, the electrical performance and the reliability of the electrical connection are improved. Moreover, the operation is relatively simple, which is convenient for manual operation and improves the operation efficiency. The wiring terminal has the following advantages:

[0055] (1) The wire and the wiring terminal are connected stably and are not easy to come off, which ensures the electrical performance and the mechanical performance;

[0056] (2) The crimping unit can be a conductive metal, which increases the conduction area of the wire and the wiring terminal and reduces the heat generation at the connection;

[0057] (3) By the retreat prevention mechanism and the retreat prevention groove, the roll-shaped body is rotated to a certain position, the retreat prevention mechanism and the retreat prevention groove can fix the roll-shaped body and prevent it from being reversed, so as to fix the crimping unit in the accommodating cavity;

[0058] (4) By rotating the force applying portion, it is convenient to use a wrench tool to drive the roll-shaped body to rotate;

[0059] (5) The crimping tool can be omitted, and only a general tool such as a wrench can be used to connect the wiring terminal and the wire;

[0060] (6) The wiring terminal has a simple structure and is convenient to operate, and is suitable for wire harness maintenance and other scenes. BRIEF DESCRIPTION OF DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0062] Figure 1 The wiring terminal and the wire provided by the present application are shown in the schematic view;

[0063] Figures 2-7 The cross-sectional view of A-A in Figure 1

[0064] Figure 8 Figure 7 ​​a sectional view of the C-C direction of the

[0065] Figures 9-12 is Figure 1 a sectional view of the B-B direction of the

[0066] Figures 13-14 is a sectional view of the lateral direction of the terminal provided by the application;

[0067] Figure 15 is a sectional view of an embodiment of the terminal provided by the application at A;

[0068] Figure 16 is Figure 15 a sectional view of the D-D direction of the

[0069] BRIEF DESCRIPTION OF DRAWINGS

[0070] 10, terminal body; 11, electrical connection part;

[0071] 20, wiring part; 21, accommodating cavity; 211, gap;

[0072] 22, insertion slot; 221, insertion slot side wall; 222, slot center plane;

[0073] 30, coiled body; 301, axial direction of the coiled body;

[0074] 40, crimping unit; 401, fixed end; 402, overhanging end; 41, protruding part; 42, rounded corner;

[0075] 51, coiled plate; 52, first cylinder; 53, second cylinder;

[0076] 61, retreat prevention groove; 62, retreat prevention mechanism; 63, retreat prevention piece;

[0077] 70, rotating force applying part; 701, outer sleeve hexagonal cap; 71, force applying plane;

[0078] 80, wire; 81, insulating layer. DETAILED DESCRIPTION

[0079] The technical solutions in the embodiments of the application will be apparently and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0080] Scheme One

[0081] The application provides a wiring terminal, such as Figures 1-2As shown, the terminal includes a terminal body 10 and a coiled body 30; the terminal body 10 includes a wiring portion 20 and an electrical connection portion 11 for connecting with an electrical device, the wiring portion 20 is provided with a receiving cavity 21 for receiving a wire 80, a side wall of the receiving cavity 21 is provided with a plug-in slot 22; the coiled body 30 is rotatably sleeved outside the wiring portion 20, the coiled body 30 is provided with a crimping unit 40, the crimping unit 40 can extend to the inside of the receiving cavity 21 through the plug-in slot 22.

[0082] The wire 80 is inserted into the receiving cavity 21, as shown, Figure 3 The coiled body 30 is driven to rotate relative to the wiring portion 20, the coiled body 30 will drive the crimping unit 40 to extend to the receiving cavity 21 through the plug-in slot 22, the crimping unit 40, the wire 80 located in the receiving cavity 21 and the side wall of the receiving cavity 21 are extruded, so that the wire 80 and the wiring portion 20 are crimped together.

[0083] The terminal, by the crimping unit 40, extrusion force is applied, the wire 80 and the wiring portion 20 are in close contact, not easy to loose, the contact area is larger, improves the electrical performance and the reliability of electrical connection. And, the operation is relatively simple, convenient for manual operation, improves the operation efficiency.

[0084] In an embodiment, the coiled body 30 includes a coiled plate 51, the coiled plate 51 extends around the outer periphery of the wiring portion 20, and the crimping unit 40 is formed on the end of the coiled plate 51, as shown, Figure 2 The coiled plate 51 is generally cylindrical or annular, and is provided with a notch, the coiled plate 51 has at least two ends, and the crimping unit 40 is formed on the end of the coiled plate 51 located on the inside. The coiled plate 51 can be made by bending and winding a flat plate, or can be made by cutting a notch in a complete cylinder along the longitudinal direction.

[0085] Further, the coiled body 30 includes a first cylinder 52, the first cylinder 52 is distributed along the axial direction 301 of the coiled body with the coiled plate 51 and the first cylinder 52 is fixedly connected with the coiled plate 51, the first cylinder 52 is a complete cylinder, the inner wall of the first cylinder 52 is in sliding fit with the outer wall of the wiring portion 20, which can guide the rotation of the coiled body 30 around the wiring portion 20, and is more convenient for operation. Further, the two sides of the coiled plate 51 are respectively fixedly connected with the first cylinder 52, so as to improve the stability of the rotation of the coiled body 30 and the structural strength of the coiled body 30.

[0086] In the above embodiment in which the coiled body 30 includes the coiled plate 51, the circumferential length of the coiled plate 51 is taken as the circumference of the coiled body 30.

[0087] Further, the ratio of the circumference of the roll-shaped body 30 to the circumference of the terminal connecting portion 20 is in the range of 75% to 100%. The roll-shaped body 30 is fitted to the outside of the terminal connecting portion 20, and can be completely covered or partially covered. In order to verify the influence of the ratio of the circumference of the roll-shaped body 30 to the circumference of the terminal connecting portion 20 on the pull-out force and voltage drop of the terminal connecting structure, the inventors selected a terminal connecting portion 20 of the same specification, roll-shaped bodies 30 of the same size but different circumferences, and the same wire 80, and produced different samples of the terminal connecting structure, and tested the pull-out force and voltage drop of the samples of the terminal connecting structure. The results are recorded in Table 1.

[0088] The pull-out force test method is to use a universal pull-out force testing machine, fix the terminal body 10 and the wire 80 to the stretching jigs of the universal pull-out force testing machine, and pull out in the opposite direction at a speed of 50 mm / min, and record the force when the wire 80 is finally separated from the terminal body 10 as the pull-out force. In this embodiment, the pull-out force less than 1600 N is unqualified.

[0089] The voltage drop test method is to place the terminal body 10 and the wire 80 on the voltage drop detection table, test the voltage values A and B of the terminal body 10 and the wire 80 respectively, then test the voltage value C of the terminal body 10 to the wire 80, and then calculate the value of C-(A+B) as the voltage drop value of the connection point of the terminal body 10 and the wire 80. In this embodiment, the voltage drop value greater than 4 mV is unqualified.

[0090] Table 1: Influence of the ratio of the circumference of the roll-shaped body 30 to the circumference of the terminal connecting portion 20 on the pull-out force and voltage drop of the terminal connecting structure

[0091]

[0092] As can be seen from Table 1 above, when the ratio of the circumference of the roll-shaped body 30 to the circumference of the terminal connecting portion 20 is less than 75%, the voltage drop between the terminal body 10 and the wire 80 is greater than 4 mV, and the pull-out force between the terminal body 10 and the wire 80 is less than 1600 N, both of which are unqualified. When the ratio of the circumference of the roll-shaped body 30 to the circumference of the terminal connecting portion 20 is greater than 75%, the voltage drop and the pull-out force between the terminal body 10 and the wire 80 are both better than the qualified values, and the larger the ratio, the better the electrical and mechanical properties of the terminal connecting structure. Therefore, the inventors set the ratio of the circumference of the roll-shaped body 30 to the circumference of the terminal connecting portion 20 in the range of 75% to 100%.

[0093] The structure of the roll-shaped body 30 is not limited to one. In another embodiment, the roll-shaped body 30 includes a second cylinder 53, as shown in Figure 15As shown, one end of the crimping unit 40 is fixed to the inner wall of the second cylinder 53, and the second cylinder 53 drives the crimping unit 40 to rotate, so that the crimping unit 40 enters the accommodating cavity 21 through the insertion slot 22. The crimping unit 40 and the second cylinder 53 can be an integral structure, or can be a split structure, and the crimping unit 40 can be fixed to the second cylinder 53 by welding.

[0094] The second cylinder 53 can be a complete cylindrical body; the second cylinder 53 can also be a structure with an opening, for example, an arc-shaped plate. In this embodiment, the circumferential length of the second cylinder 53 is taken as the circumference of the roll-shaped body 30. The same experimental method is used to verify the effect of the ratio of the circumference of the roll-shaped body 30 to the circumference of the wiring portion 20 on the pull force and voltage drop of the terminal wiring structure, and the experimental data is basically the same as that in Table 1. Therefore, the inventors set the ratio of the circumference of the roll-shaped body 30 to the circumference of the wiring portion 20 to be 75%-100%.

[0095] The inventors further improved the size of the roll-shaped body 30: the ratio of the axial length of the roll-shaped body 30 to the axial length of the wiring portion 20 is 5%-100%. The roll-shaped body 30 is sleeved on the wiring portion 20, and in the length direction, the roll-shaped body 30 can be completely wrapped or partially wrapped on the wiring portion 20. In order to verify the effect of the ratio of the axial length of the roll-shaped body 30 to the axial length of the wiring portion 20 on the pull force and voltage drop of the terminal wiring structure, the inventors selected the same specification of the wiring portion 20, the same size but different length of the roll-shaped body 30, and the same wire 80 to make different terminal wiring structure samples, and tested the pull force and voltage drop of the terminal wiring structure samples. The results are recorded in Table 2.

[0096] Table 2: Effect of the ratio of the axial length of the roll-shaped body 30 to the axial length of the wiring portion 20 on the pull force and voltage drop of the terminal wiring structure

[0097]

[0098] The pull force test method is to use a universal pull force testing machine, fix the terminal body 10 and the wire 80 on the stretching fixture of the universal pull force testing machine, and pull in the opposite direction at a speed of 50 mm / min. The force when the wire 80 is finally separated from the terminal body 10 is recorded as the pull force. In this embodiment, the pull force less than 1600N is unqualified.

[0099] The test method of voltage drop is as follows: the terminal body 10 and the wire 80 are placed on a voltage drop detection table, the voltage values A and B of the terminal body 10 and the wire 80 are tested respectively, then the voltage value C of the terminal body 10 to the wire 80 is tested, and then the value of C-(A+B) is calculated as the voltage drop value of the connecting point of the terminal body 10 and the wire 80. In the embodiment, the voltage drop value greater than 4mV is unqualified.

[0100] As can be seen from Table 2, when the ratio of the axial length of the roll-shaped body 30 to the axial length of the connecting portion 20 is less than 5%, the voltage drop between the terminal body 10 and the wire 80 is greater than 4mV, and the pulling force between the terminal body 10 and the wire 80 is less than 1600N, both of which are unqualified; when the ratio of the axial length of the roll-shaped body 30 to the axial length of the connecting portion 20 is greater than 5%, both the voltage drop and the pulling force between the terminal body 10 and the wire 80 are better than the qualified values, and the larger the ratio, the better the electrical and mechanical properties of the terminal connecting structure. Therefore, the inventor sets the ratio of the axial length of the roll-shaped body 30 to the axial length of the connecting portion 20 to be 5%-100%.

[0101] The roll-shaped body 30 and the crimping unit 40 can be made of conductive material, the roll-shaped body 30 is in contact with the connecting portion 20, and the crimping unit 40 is in contact with the wire 80, which increases the conductive contact area and improves the conductive performance of the wire 80 and the terminal.

[0102] The connecting portion 20 can be cylindrical as a whole, as shown in FIG. 2A, that is, the shape and size of the cross section of the connecting portion 20 remain unchanged at each position along the axial direction of the connecting portion 20. Figure 8 The connecting portion 20 can also be conical as a whole, as shown in FIG. 2B, that is, the cross section of the connecting portion 20 gradually expands from the end away from the electrical connecting portion 11 to the end close to the electrical connecting portion 11, making it difficult for the wire 80 to be pulled out of the accommodating cavity 21 and improving the mechanical connection stability. Figure 16

[0103] In an embodiment, the terminal is in an initial state, and the crimping unit 40 is at least partially located in the insertion slot 22, so as to facilitate the crimping unit 40 to continue to extend into the insertion slot 22 when the roll-shaped body 30 is rotated.

[0104] ​In one embodiment, the overhanging end 402 of the crimping unit 40 has a tendency to extend inwardly into the accommodating cavity 21, facilitating the crimping unit 40 to extend inwardly and enter the accommodating cavity 21 through the insertion slot 22 when the roll-shaped body 30 is rotated. In this embodiment, the crimping unit 40 can not enter the insertion slot 22 in the initial state, and the crimping unit 40 is attached to the outer wall of the wiring portion 20. The crimping unit 40 can be made of a material with elasticity, and the inner diameter of the overhanging end 402 of the crimping unit 40 in the free state is smaller than the outer diameter of the wiring portion 20, so that the overhanging end 402 of the crimping unit 40 has a tendency to extend inwardly.

[0105] Preferably, the crimping unit 40 is at least partially located in the insertion slot 22, and the overhanging end 402 of the crimping unit 40 has a tendency to extend inwardly into the accommodating cavity 21, so as to facilitate the crimping unit 40 to smoothly enter the accommodating cavity 21 and extend into the wire 80 when the roll-shaped body 30 is rotated.

[0106] The crimping unit 40 can be inserted into the wire 80. As shown in Figure 3 , the crimping unit 40 is inserted into the wire 80 from the side of the wire 80 when the roll-shaped body 30 is rotated, so that the wire 80 is expanded outwardly, the wire 80 is in contact with the side wall of the accommodating cavity 21 and is extruded, the wire 80 is confined in the accommodating cavity 21 and is deformed, the pull-out force of the wire 80 from the terminal is guaranteed to meet the requirements, the wire 80 and the wiring portion 20 are tightly combined, the contact area is increased, and the electrical and mechanical properties are enhanced.

[0107] Further, as shown in Figure 5 , the end of the crimping unit 40 extending into the accommodating cavity 21 is provided with a chamfer or a round corner 42, so as to reduce the resistance of the crimping unit 40 inserted into the wire 80, facilitate the insertion of the crimping unit 40 into the wire 80, facilitate manual operation, and prevent the core wire of the wire 80 from being cut off when the crimping unit 40 enters the wire 80.

[0108] Further, as shown in Figure 6 , the thickness of the crimping unit 40 gradually decreases from the fixed end 401 to the overhanging end 402, so as to reduce the resistance of the crimping unit 40 inserted into the wire 80, facilitate the insertion of the crimping unit 40 into the wire 80, and facilitate manual operation.

[0109] Further, the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 accounts for 1%-45% of the volume of the accommodation cavity 21. In the case where the terminal is provided with a plurality of crimping units 40, the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 is the sum of the volumes of the plurality of crimping units 40 entering the accommodation cavity 21. The larger the volume of the portion of the crimping unit 40 entering the accommodation cavity 21, the more the crimping unit 40 and the wire 80 will fill the volume of the accommodation cavity 21, allowing the wire 80 to closely adhere to the inner surface of the accommodation cavity 21, relying on the friction between the wire 80 and the overhanging end 402 and the inner wall of the accommodation cavity 21 to prevent the wire 80 from being pulled out of the accommodation cavity 21, and increasing the contact area between the wire 80 and the overhanging end 402 and the inner wall of the accommodation cavity 21, reducing the contact resistance, and improving the mechanical and electrical properties of the terminal connection structure.

[0110] To verify the effect of the proportion of the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 to the volume of the accommodation cavity 21 on the pull-out force and voltage drop of the terminal connection structure, the inventors selected the same size of the terminal 20, the same size but different volume of the overhanging end 402, and the same wire 80 to make different terminal connection structure samples, and tested the pull-out force and voltage drop of the terminal connection structure samples, and the results are recorded in Table 3.

[0111] The pull-out force test method is to use a universal pull-out force testing machine, fix the terminal body 10 and the wire 80 on the stretching fixture of the universal pull-out force testing machine, and pull in the opposite direction at a speed of 50mm / min, and record the force when the wire 80 is finally pulled out of the terminal body 10 as the pull-out force. In this embodiment, a pull-out force less than 1600N is unqualified.

[0112] The voltage drop test method is to place the terminal body 10 and the wire 80 on the voltage drop detection table, test the voltage values A and B of the terminal body 10 and the wire 80 respectively, then test the voltage value C of the terminal body 10 to the wire 80, and then calculate the value of C-(A+B) as the voltage drop value of the connection point of the terminal body 10 and the wire 80. In this embodiment, a voltage drop value greater than 4mV is unqualified.

[0113] Table 3: Effect of the proportion of the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 to the volume of the accommodation cavity 21 on the pull-out force and voltage drop of the terminal connection structure

[0114]

[0115] As can be seen from Table 3, when the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 accounts for less than 1% of the volume of the accommodation cavity 21, the voltage drop between the terminal body 10 and the wire 80 is greater than 4 mV, and the pulling force between the terminal body 10 and the wire 80 is less than 1600 N, both of which are unqualified; when the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 accounts for more than 1% of the volume of the accommodation cavity 21, both the voltage drop and the pulling force between the terminal body 10 and the wire 80 are better than the qualified values, and the greater the proportion, the better the electrical and mechanical properties of the terminal wiring structure; when the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 accounts for more than 45% of the volume of the accommodation cavity 21, since most of the volume in the accommodation cavity 21 has been filled by the wire 80, the large overhanging end 402 cannot be inserted into the wire 80 without a gap, resulting in installation failure of the terminal wiring structure, therefore, the inventors set the volume of the portion of the crimping unit 40 entering the accommodation cavity 21 to account for 1%-45% of the volume of the accommodation cavity 21.

[0116] Further, the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body accounts for 5%-95% of the length of the roll-shaped body 30 in the axial direction. The higher the proportion of the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body accounts for the length of the roll-shaped body 30 in the axial direction, the greater the contact area of the overhanging end 402 with the wire 80, and the greater the friction, so that the wire 80 cannot be separated from the accommodation cavity 21, thereby improving the mechanical and electrical properties of the terminal wiring structure.

[0117] In order to verify the effect of the proportion of the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body accounts for the length of the roll-shaped body 30 in the axial direction on the pulling force and voltage drop of the terminal wiring structure, the inventors selected roll-shaped bodies 30 of the same specification, crimping units 40 of the same size but different lengths, and wires 80 of the same size, and made different terminal wiring structure samples, and tested the pulling force and voltage drop of the terminal wiring structure samples, and the results are recorded in Table 4.

[0118] The pulling force test method is to use a universal pulling force testing machine, fix the terminal body 10 and the wire 80 on the stretching fixture of the universal pulling force testing machine, and pull in the opposite direction at a speed of 50 mm / min, and record the force when the wire 80 is finally separated from the terminal body 10 as the pulling force. In this embodiment, a pulling force less than 1600 N is unqualified.

[0119] The test method of voltage drop is as follows: the terminal body 10 and the wire 80 are placed on the voltage drop detection table, the voltage values A and B of the terminal body 10 and the wire 80 are respectively tested, then the voltage value C of the terminal body 10 to the wire 80 is tested, and then the value of C-(A+B) is calculated as the voltage drop value of the connection point of the terminal body 10 and the wire 80. In the embodiment, the voltage drop value greater than 4 mV is unqualified.

[0120] Table 4: The influence of the proportion of the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body to the length of the roll-shaped body 30 in the axial direction on the pull force and voltage drop of the terminal wiring structure

[0121]

[0122] As can be seen from Table 4 above, when the proportion of the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body to the length of the roll-shaped body 30 in the axial direction is less than 5%, the voltage drop between the terminal body 10 and the wire 80 is greater than 4 mV, and the pull force between the terminal body 10 and the wire 80 is less than 1600 N, both of which are unqualified; when the proportion of the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body to the length of the roll-shaped body 30 in the axial direction is greater than 5%, both the voltage drop and the pull force between the terminal body 10 and the wire 80 are better than the qualified values, and the greater the proportion, the better the electrical and mechanical properties of the terminal wiring structure; when the proportion of the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body to the length of the roll-shaped body 30 in the axial direction is greater than 95%, since the crimping unit 40 is fixed on the roll-shaped body 30, the longer the length of the crimping unit 40, the shorter the length of the roll-shaped body 30 used to fix the fixed end 401, which is insufficient in strength, and the roll-shaped body 30 at both ends may be broken during installation of the terminal wiring structure, resulting in installation failure of the terminal wiring structure. Therefore, the inventors set the proportion of the length of the crimping unit 40 in the axial direction 301 of the roll-shaped body to the length of the roll-shaped body 30 in the axial direction to be 5%-95%.

[0123] Preferably, the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 is in the range of 10%-50%, for example, the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 is equal to 10%, or the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 is equal to 30%, or the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 is equal to 50%.

[0124] To verify the effect of the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion groove 22 on the pull-out force and voltage drop of the terminal wiring structure, and the torque when the terminal wiring structure is assembled, the inventors selected terminal bodies 10 and coiled bodies 30 of the same size, crimping units 40 of the same thickness, but insertion grooves 22 of different widths, and the same wires 80, made different samples of terminal wiring structures, and tested the pull-out force and voltage drop of the terminal wiring structure samples, and the torque when the terminal wiring structure was assembled, and recorded the results in Table 5.

[0125] The pull-out force test method is to use a universal pull-out force testing machine, fix the terminal body 10 and the wire 80 on the stretching fixture of the universal pull-out force testing machine, and pull in the opposite direction at a speed of 50 mm / min, and record the force when the wire 80 is finally separated from the terminal body 10 as the pull-out force. In this embodiment, a pull-out force less than 1600 N is unqualified.

[0126] The voltage drop test method is to place the terminal body 10 and the wire 80 on the voltage drop detection table, test the voltage values A and B of the terminal body 10 and the wire 80 respectively, then test the voltage value C of the terminal body 10 to the wire 80, and then calculate the value of C-(A+B) as the voltage drop value of the connection point of the terminal body 10 and the wire 80. In this embodiment, a voltage drop value greater than 4 mV is unqualified.

[0127] The torque test method when the terminal wiring structure is assembled is to use a torque tester to test the torque required when the coiled body 30 is twisted during the assembly of the coiled body 30 to the terminal body 10. In this embodiment, a torque greater than 10 N·m is unqualified.

[0128] Table 5: Effect of the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion groove 22 on the pull-out force and voltage drop of the terminal wiring structure, and the torque when the terminal wiring structure is assembled

[0129]

[0130] As can be seen from Table 5, when the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 is less than 10%, or the maximum thickness of the crimping unit 40 is too small, or the width of the insertion slot 22 is too large, the contact area and the compression force between the overhanging end 402 and the inner wall of the accommodating cavity 21 and the wire 80 are reduced, the voltage drop between the terminal body 10 and the wire 80 is greater than 4 mV, and the pulling force between the terminal body 10 and the wire 80 is less than 1600 N, all of which are unqualified; when the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 is greater than 10%, the voltage drop and the pulling force between the terminal body 10 and the wire 80 are better than the qualified values, and the greater the ratio, the better the electrical and mechanical properties of the terminal wiring structure; when the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 is greater than 50%, because the maximum thickness of the crimping unit 40 is too large, or the width of the insertion slot 22 is too small, the interference position of the overhanging end 402 and the insertion slot 22 is larger, and the torque required for the overhanging end 402 to be inserted into the insertion slot 22 is larger, resulting in that the torque during assembly of the terminal wiring structure is greater than 10 N·m, which is unqualified; therefore, the inventor sets the ratio of the maximum thickness of the crimping unit 40 to the width of the insertion slot 22 to be 10%-50%.

[0131] The crimping unit 40 can extend along the outer side wall of the wire 80. As shown in Figure 7 , as the coiled body 30 rotates, the crimping unit 40 enters between the wire 80 and the inner wall of the accommodating cavity 21 and extends along the outer side wall of the wire 80. The crimping unit 40 fills the gap between the wire 80 and the accommodating cavity 21 and exerts pressure on the side wall of the accommodating cavity 21 and the wire 80, so that a large friction force is generated between the crimping unit 40 and the wire 80 and between the crimping unit 40 and the inner wall of the accommodating cavity 21, so that the wire 80 and the wiring part 20 are fixed together. In an embodiment, the wire 80 is pressed to move to one side of the accommodating cavity 21 to tightly contact the side wall of the accommodating cavity 21. In an embodiment, the crimping unit 40 can be made of a conductive material, and the wire 80 and the wiring part 20 are electrically connected through the crimping unit 40.

[0132] Further, there is a gap 211 between the wire 80 and the inner wall of the accommodating cavity 21, and the crimping unit 40 at least partially extends into the gap 211, as shown in Figure 7 , the crimping unit 40 can extend along the outer side wall of the wire 80 and enter the gap 211.

[0133] Further, the side wall inside the crimping unit 40 is provided with a protruding part 41, as shown in Figure 7 and Figure 8As shown in FIG. 4, the crimping unit 40 extends along the outer sidewall of the wire 80, and the protruding portion 41 is in close contact with the outer sidewall of the wire 80, thereby improving the tightness of the connection and preventing the wire 80 from being easily loosened from the accommodating cavity 21. In addition, the protruding portion 41 can be pressed to be deformed inwardly, and the inner sidewall of the crimping unit 40 is in contact with the outer sidewall of the wire 80, thereby increasing the contact area.

[0134] Further, the sidewall of the crimping unit 40 on the outer side is provided with the protruding portion 41, as shown in FIG. 5, the crimping unit 40 extends along the outer sidewall of the wire 80, and the protruding portion 41 is in close contact with the inner wall of the accommodating cavity 21, thereby improving the tightness of the connection and preventing the wire 80 from being easily loosened from the accommodating cavity 21. In addition, the protruding portion 41 can be pressed to be deformed inwardly, and the outer sidewall of the crimping unit 40 is in contact with the inner wall of the accommodating cavity 21, thereby increasing the contact area. Figure 7 Figure 8 As shown in FIG. 4, the crimping unit 40 extends along the outer sidewall of the wire 80, and the protruding portion 41 is in close contact with the outer sidewall of the wire 80, thereby improving the tightness of the connection and preventing the wire 80 from being easily loosened from the accommodating cavity 21. In addition, the protruding portion 41 can be pressed to be deformed inwardly, and the inner sidewall of the crimping unit 40 is in contact with the outer sidewall of the wire 80, thereby increasing the contact area.

[0135] The wire 80 can be made of a plurality of metal wires with small diameters, and the wire 80 is a flexible wire 80, as shown in FIG. 6, the crimping unit 40 is inserted into the wire 80, so that the crimping unit 40 extends at least partially between the plurality of metal wires; the embodiment in which the crimping unit 40 extends along the outer sidewall of the wire 80 is also applicable to the wire 80 in this form. Figure 3

[0136] The wire 80 can be made of a whole wire, and the crimping unit 40 can extend along the outer sidewall of the wire 80 relatively smoothly; for the wire 80 in this form, the driving force required by the embodiment in which the crimping unit 40 is inserted into the wire 80 is relatively large, and the wire 80 can be made of a material with relatively soft quality to reduce the required driving force.

[0137] The wire 80 can be a rigid wire, and the crimping unit 40 can extend along the outer sidewall of the wire 80 to move between the wire 80 and the inner wall of the accommodating cavity 21. In this case, preferably, there is a gap 211 between the wire 80 and the inner wall of the accommodating cavity 21, and the crimping unit 40 extends at least partially into the gap 211.

[0138] In an embodiment, the roll-shaped body 30 is provided with a plurality of crimping units 40 distributed in the circumferential direction, so as to improve the firmness of the connection between the wire 80 and the terminal, and to enhance the mechanical and electrical properties.

[0139] As shown in FIG. 4, the crimping unit 40 extends along the outer sidewall of the wire 80, and the protruding portion 41 is in close contact with the outer sidewall of the wire 80, thereby improving the tightness of the connection and preventing the wire 80 from being easily loosened from the accommodating cavity 21. In addition, the protruding portion 41 can be pressed to be deformed inwardly, and the inner sidewall of the crimping unit 40 is in contact with the outer sidewall of the wire 80, thereby increasing the contact area. Figures 4-6

[0140] ​​​As shown in Figure 7 The plurality of crimping units 40 respectively extend along the outer sidewall of the conductor 80 to form a surrounding shape on the conductor 80, thereby improving the connection firmness, increasing the contact area, and enhancing the mechanical connection performance and the electrical connection performance.

[0141] The insertion slot 22 has an insertion slot sidewall 221 extending along the axial direction of the wire portion 20. Specifically, the insertion slot sidewall 221 extends along the axial direction of the wire portion 20, that is, the insertion slot sidewall 221 extends along the axial direction of the wire portion 20 as a whole, but the insertion slot sidewall 221 is not limited to being parallel to the axial direction of the wire portion 20. The insertion slot sidewall 221 can be a plane or a curved surface, and the insertion slot sidewall 221 can have an included angle greater than zero with the axial direction of the wire portion 20.

[0142] The material of the crimping unit 40 can be selected from brass or tellurium copper, which has strong electrical conductivity and high hardness and elasticity. On the one hand, the crimping unit 40 can bend under the action of the insertion slot sidewall 221 as the winding drum rotates. On the other hand, the crimping unit 40 can be inserted into the conductor 80.

[0143] In order to enable the crimping unit 40 to smoothly enter the accommodation cavity 21 through the insertion slot 22, the inventors have improved the insertion slot 22.

[0144] The plane in which the insertion slot sidewall 221 is located does not pass through the central axis of the accommodation cavity 21. In the direction pointing to the central axis of the accommodation cavity 21, it is the radial direction of the accommodation cavity 21. That is, the extension direction of the insertion slot sidewall 221 deviates from the radial direction of the accommodation cavity 21, so that the crimping unit 40 extends into the accommodation cavity 21 at an angle with the radial direction, which is beneficial to reduce the resistance of the crimping unit 40 extending inwardly, so as to enable the crimping unit 40 to be inserted into the conductor 80 or between the conductor 80 and the sidewall of the accommodation cavity 21.

[0145] The shape of the accommodation cavity 21 is not limited to one type. The accommodation cavity 21 is adapted to the shape of the conductor 80, and the accommodation cavity 21 can be cylindrical, polygonal columnar, or conical. Preferably, the accommodation cavity 21 is a cylindrical cavity, a circular truncated cone cavity, a polygonal prism cavity, or a polygonal truncated cone cavity.

[0146] As shown in Figure 4 The opposite two insertion slot sidewalls 221 guide the extension movement of the crimping unit 40. In an embodiment, the opposite two insertion slot sidewalls 221 are parallel to each other.

[0147] Further, the insertion slot 22 has a slot center plane 222 passing through the center axis of the receiving cavity 21, and the two opposite insertion slot side walls 221 are centrally symmetric relative to the slot center plane 222, and the included angle between the insertion slot side wall 221 and the slot center plane 222 ranges from 0 to 45°. When the crimping unit 40 extends inward, it is limited by the insertion slot side wall 221, and the insertion slot side wall 221 plays a guiding role in the inward extension of the crimping unit 40. By limiting the angle of the insertion slot side wall 221 relative to the slot center plane 222, it can be ensured that the crimping unit 40 extends smoothly and smoothly inward, which is beneficial to the insertion of the crimping unit 40 into the wire 80.

[0148] In order to verify the influence of the included angle between the insertion slot side wall 221 and the slot center plane 222 on the pull-out force and voltage drop of the terminal wiring structure, the inventors selected terminal bodies 10 and coiled bodies 30 of the same size, but with different included angles between the insertion slot side wall 221 and the slot center plane 222, and the same wire 80, to make different terminal wiring structure samples, and test the terminal wiring structure pull-out force and voltage drop of the terminal wiring structure samples, and record the results in Table 6.

[0149] The pull-out force test method is to use a universal pull-out force testing machine, fix the terminal body 10 and the wire 80 on the stretching fixture of the universal pull-out force testing machine, and pull in the opposite direction at a speed of 50 mm / min. The force at which the wire 80 is finally separated from the terminal body 10 is recorded as the pull-out force. In this embodiment, a pull-out force less than 1600N is unqualified.

[0150] The voltage drop test method is to place the terminal body 10 and the wire 80 on the voltage drop detection table, test the voltage values A and B of the terminal body 10 and the wire 80 respectively, then test the voltage value C of the terminal body 10 to the wire 80, and then calculate the value of C-(A+B) as the voltage drop value of the connection point of the terminal body 10 and the wire 80. In this embodiment, a voltage drop value greater than 4mV is unqualified.

[0151] Table 6: Influence of the included angle between the insertion slot side wall 221 and the slot center plane 222 on the pull-out force and voltage drop of the terminal wiring structure

[0152]

[0153] As can be seen from Table 6, when the angle between the side wall 221 of the insertion groove and the groove center plane 222 is greater than 45°, the voltage drop between the terminal body 10 and the wire 80 is greater than 4mV, and the pulling force between the terminal body 10 and the wire 80 is less than 1600N, both of which are unqualified; the greater the angle between the side wall 221 of the insertion groove and the groove center plane 222, the lower the strength of the wiring portion 20 itself and the fastening force on the wire 80, and in addition, the greater the angle between the side wall 221 of the insertion groove and the groove center plane 222, the closer the position of the crimping unit 40 inserted into the accommodation cavity 21 to the inner wall of the accommodation cavity 21, at which time the contact area between the crimping unit 40 and the wire 80 becomes smaller, which also reduces the mechanical and electrical properties of the terminal wiring structure, therefore, the inventors set the angle range between the side wall 221 of the insertion groove and the groove center plane 222 to 0-45°.

[0154] Preferably, the side wall of the accommodation cavity 21 is provided with a plurality of insertion grooves 22, and for each insertion groove 22, the inclination angle of the side wall thereof relative to the corresponding groove center plane 222 is consistent.

[0155] In order to further improve the reliability of the connection between the wire 80 and the terminal, the inventors have further improved the terminal: the terminal comprises a retreat prevention mechanism 62. The retreat prevention mechanism 62 can prevent the crimping unit 40 from being withdrawn from the accommodation cavity 21, so as to avoid the wire 80 from being separated from the terminal due to external force.

[0156] In an embodiment, the outer wall of the wiring portion 20 is provided with a retreat groove 61, and the coiled body 30 is provided with a retreat prevention mechanism 62 having an inward extending tendency, as shown in Figure 9 and Figure 10 The coiled body 30 rotates clockwise relative to the wiring portion 20, when the retreat prevention mechanism 62 rotates with the coiled body 30 to the retreat groove 61, the retreat prevention mechanism 62 extends inwardly into the retreat groove 61, the retreat prevention mechanism 62 abuts against the inner wall of the retreat groove 61, which prevents the retreat prevention mechanism 62 from rotating counterclockwise, thereby preventing the coiled body 30 from reversing rotation, so that the crimping unit 40 cannot be withdrawn from the accommodation cavity 21, and the reliability of the connection between the wire 80 and the terminal is ensured.

[0157] The retreat prevention mechanism 62 can be arranged on the first cylinder 52. The first cylinder 52 can be a complete cylindrical shape, one end of the retreat prevention mechanism 62 is fixedly connected to the inner wall of the first cylinder 52; the first cylinder 52 can also be a structure having a general cylindrical shape and a notch, and the end of the notch forms the retreat prevention mechanism 62. After the retreat prevention mechanism 62 extends inwardly into the retreat groove 61, the retreat prevention mechanism 62 can be pulled out or pried out of the retreat groove 61 by a tool, so that the retreat locking can be released, and the crimping unit 40 can be withdrawn from the accommodation cavity 21.

[0158] In another embodiment, the inner wall of the winding body 30 is provided with a retreat-preventing groove 61, and the wiring portion 20 is provided with a retreat-preventing mechanism 62 which has a tendency to extend to the outside. As shown in Figure 11 and Figure 12 , the winding body 30 is rotated clockwise relative to the wiring portion 20, and when the retreat-preventing groove 61 is rotated with the winding body 30 to the retreat-preventing mechanism 62, the retreat-preventing mechanism 62 extends to the outside into the retreat-preventing groove 61, and the inner wall of the retreat-preventing mechanism 62 abuts against the inner wall of the retreat-preventing groove 61, so that the inner wall of the retreat-preventing mechanism 62 prevents the winding body 30 from being rotated counterclockwise, thereby preventing the winding body 30 from being reversely rotated to take the crimping unit 40 out of the accommodating cavity 21, and ensuring the reliability of the connection of the wire 80 to the wiring mechanism.

[0159] The retreat-preventing groove 61 can be arranged on the inner wall of the first barrel 52. After the retreat-preventing mechanism 62 extends to the inside into the retreat-preventing groove 61, the retreat-preventing mechanism 62 is pressed to the inside, so that the retreat-preventing mechanism 62 is separated from the retreat-preventing groove 61, and the retreat-preventing mechanism 62 is unlocked, and the crimping unit 40 can be taken out of the accommodating cavity 21.

[0160] Further, as shown in Figures 9-12 , the retreat-preventing mechanism 62 is a retreat-preventing piece 63, and the retreat-preventing piece 63 can be made of a material having elasticity.

[0161] Further, the retreat-preventing mechanism 62 is a springing mechanism having elasticity, and specifically, the springing mechanism includes a spring and a movable column arranged on the end of the spring. When the springing mechanism is arranged on the winding body, the movable column has a tendency to extend to the inside under the elastic force of the spring; and when the springing mechanism is arranged on the wiring portion 20, the movable column has a tendency to extend to the outside under the elastic force of the spring.

[0162] In an embodiment, the winding body 30 includes a rotating force applying portion 70, so that the rotating torque can be applied to the winding body 30 by the rotating force applying portion 70 to drive the winding body 30 to rotate relative to the wiring portion 20. Further, the rotating force applying portion 70 includes a plurality of force applying planes 71, and the operator can hold or use a tool to fix the terminal body 10 and clamp the plurality of force applying planes 71 to apply force, so that the rotating torque can be applied to the winding body 30, and manual operation is facilitated. As shown in Figure 13 , the rotating force applying portion 70 includes two oppositely arranged force applying planes 71, and the two force applying planes 71 are parallel to the axis of the winding body, and the two force applying planes 71 can be formed by cutting the winding body. Figure 14 As shown in , the rotating force applying portion 70 includes a sleeving hexagonal cap 701, and the sleeving hexagonal cap 701 is fixedly arranged on the outside of the first barrel 52, and the six sides of the sleeving hexagonal cap 701 serve as the force applying planes 71.

[0163] The material of the roll-shaped body 30 and the terminal body 10 can be various copper materials, and different copper materials correspond to different properties, and in different use environments, the corresponding design purposes can be achieved

[0164] The wire 80 can be an aluminum wire or a copper wire. In an embodiment, the wire 80 is an aluminum wire, and the wire core of the wire 80 contains aluminum, which is beneficial to reduce the weight of the wire and reduce the cost.

[0165] In an embodiment, the material of the terminal body 10 contains one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

[0166] In order to demonstrate the influence of different materials of the terminal body 10 on the electrical conductivity, the inventors use different materials to make terminal body 10 samples of the same size, and test the electrical conductivity of the terminal body 10 respectively. The experimental results are shown in Table 7. In this embodiment, the electrical conductivity of the terminal body is greater than 99% which is the ideal value.

[0167] Table 7: Electrical conductivity of terminal body 10 with different materials

[0168]

[0169] As can be seen from Table 7, the terminal body 10 made of different selected materials has an electrical conductivity within the ideal range. In addition, phosphorus is a non-metallic material and cannot be directly used as the material of the terminal body 10, but it can be added to other metals to form an alloy to improve the electrical conductivity and mechanical properties of the metal itself. Therefore, the inventors set the material of the terminal body to contain one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

[0170] In an embodiment, the material of the terminal body 10 contains tellurium-copper alloy, and the content of tellurium in the tellurium-copper alloy is 0.1% to 5%, so that the terminal body has good electrical conductivity and easy cutting performance, ensuring electrical performance and improving processability.

[0171] In order to verify the influence of the content of tellurium in the tellurium-copper alloy on the electrical conductivity of the terminal body 10, the inventors selected 10 terminal bodies 10 of the same shape for testing. Each terminal body 10 has the same size, and the material of the terminal body 10 is tellurium-copper alloy, and the content of tellurium in the tellurium-copper alloy is 0.05%, 0.1%, 0.2%, 0.5%, 0.8%, 1.2%, 2%, 3%, 5%, 6%, and 7% respectively. The terminal body 10 is energized, and the electrical conductivity of the corresponding terminal body 10 is detected. The test results are shown in Table 8. In this embodiment, the electrical conductivity greater than 99% is the ideal value.

[0172] Table 8: Effect of different tellurium content of tellurium-copper alloy on conductivity of terminal body 10

[0173]

[0174] As shown in Table 8, when the content of tellurium is less than 0.1% or greater than 5%, the conductivity decreases significantly and cannot meet the ideal value requirement. When the content of tellurium is greater than or equal to 0.2% and less than or equal to 1.2%, the conductivity is the best. When the content of tellurium is greater than 0.1% and less than 0.2%, or greater than 1.2% and less than or equal to 5%, although the conductivity meets the ideal value requirement, the trend is gradually decreasing and the conductivity will also decrease. Therefore, the inventors select a tellurium-copper alloy with a content of 0.1%-5% of tellurium. In the most ideal case, a tellurium-copper alloy with a content of 0.2%-1.2% of tellurium is selected.

[0175] In an embodiment, the terminal body 10 is made of beryllium-copper alloy, and the content of beryllium in the beryllium-copper alloy is 0.05%-5%. Preferably, the content of beryllium in the terminal body 10 is 0.1%-3.5%.

[0176] The terminal body 10 contains beryllium, has very high hardness, elastic limit, fatigue limit and wear resistance, also has good corrosion resistance, thermal conductivity and electrical conductivity, and does not produce sparks when impacted.

[0177] In order to test the effect of the content of beryllium on the conductivity of the terminal body 10, the inventors select 10 terminal bodies 10 of the same shape and width for testing, each of which contains beryllium, and the content of beryllium is 0.03%, 0.05%, 0.1%, 0.2%, 1%, 1.8%, 3%, 3.5%, 5%, and 6%, respectively. The test results are shown in Table 9. In this embodiment, the ideal value of the conductivity is greater than 99%.

[0178] Table 9: Effect of different beryllium content on conductivity of terminal body 10

[0179]

[0180] As shown in Table 9, when the content of beryllium is less than 0.05% or greater than 5%, the conductivity decreases significantly and cannot meet the actual demand. When the content of beryllium is greater than or equal to 0.1% and less than or equal to 3.5%, the conductivity is the best. Therefore, the inventors select a terminal body with a content of 0.05%-5% of beryllium. In the most ideal case, a terminal body 10 with a content of 0.1%-3.5% of beryllium is selected.

[0181] In an embodiment, the terminal body 10 is made of phosphor bronze alloy, and the content of phosphorus in the phosphor bronze alloy is 0.01% to 1.5%. The phosphor bronze has the advantages of better corrosion resistance and wear resistance, can ensure good contact and good elasticity of the terminal body 10, and has excellent machining performance, which can shorten the processing time of the part.

[0182] In order to test the influence of the content of phosphorus on the conductivity of the terminal body 10, the inventor selects 10 terminal bodies of the same shape and the same width for testing, and each terminal body 10 contains phosphorus, and the content of phosphorus is 0.001%, 0.005%, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2% and 2.5% respectively. The test results are shown in Table 10. In this embodiment, the conductivity greater than 99% is the ideal value.

[0183] Table 10: Influence of different contents of phosphorus on the conductivity of the terminal body 10

[0184]

[0185] As shown in Table 10, when the content of phosphorus is less than 0.01% or greater than 1.5%, the conductivity decreases obviously and cannot meet the actual demand. When the content of phosphorus is greater than or equal to 0.05% and less than or equal to 0.5%, the conductivity is the best. Therefore, the inventor selects the terminal body 10 with the content of phosphorus of 0.01% to 1.5%. In the most ideal case, the terminal body 10 with the content of phosphorus of 0.05% to 0.5% is selected.

[0186] In an embodiment, the terminal body 10 is made of lead brass alloy, and the content of lead in the lead brass alloy is 0.1% to 5%. The lead brass alloy has the advantages of high strength, dense and uniform organization, good corrosion resistance, and excellent machining performance such as cutting and drilling.

[0187] In order to test the influence of the content of lead on the conductivity of the terminal body 10, the inventor selects 10 terminal bodies of the same shape and the same width for testing, and each terminal body 10 contains lead, and the content of lead is 0.05%, 0.1%, 0.5%, 1%, 2%, 3%, 4%, 5%, 6% and 7% respectively. The test results are shown in Table 11. In this embodiment, the conductivity greater than 99% is the ideal value.

[0188] Table 11: Influence of different contents of lead on the conductivity of the terminal body 10

[0189]

[0190] As shown in Table 11, when the content of lead is less than 0.1% or greater than 5%, the conductivity is significantly reduced, which cannot meet the actual demand. When the content of lead is greater than or equal to 1% and less than or equal to 3%, the conductivity is the best. Therefore, the inventors select the terminal body with the content of lead being 0.1%-5%. In the most ideal case, the terminal body 10 with the content of lead being 1%-3% is selected.

[0191] In an embodiment, the material of the coiled body 30 contains one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead. The material of the coiled body 30 can be the same as or different from the material of the terminal body 10. Further, the material of the coiled body 30 is different from the material of the terminal body 10. The terminal body 10 mainly functions to conduct current and electrically connect the plug-in terminal, and therefore the material of the terminal body 10 has high conductivity and good wear resistance, and can withstand multiple plugging and unplugging without affecting the conduction performance. The coiled body 30 mainly functions to fix the wire, and the material of the coiled body 30 has good elasticity and high hardness, so that the crimping unit 40 of the coiled body 30 can be smoothly inserted into the wire or the gap 211 outside the wire. Therefore, the inventors set the material of the coiled body 30 to be different from the material of the terminal body 10.

[0192] In an embodiment, at least part of the surface of the terminal body 10 is provided with a plating layer, and / or at least part of the surface of the coiled body 30 is provided with a plating layer, to improve the corrosion resistance and conductivity, and prolong the service life.

[0193] In an embodiment, the inner wall of the terminal body 10 where the wiring portion 20 is connected to the wire 80 is provided with a plating layer. When the terminal body 10 and the wire 80 are made of different materials, the plating layer can effectively reduce the contact resistance between the two, reduce the voltage drop between the wiring portion 20 and the wire 80, and improve the electrical performance.

[0194] In an embodiment, the surface of the coiled body 30 is provided with a plating layer. When the coiled body 30 and the wire 80 are made of different materials, the plating layer can effectively reduce the contact resistance between the two, reduce the voltage drop between the coiled body 30 and the wire 80, and improve the electrical performance.

[0195] In another embodiment, at least part of the surface of the terminal body 10 in contact with the wire 80 is bare, and / or at least part of the surface of the coil body 30 in contact with the wire 80 is bare, so as to facilitate the connection of the terminal body 10 and the coil body 30 with the wire in a crimping manner. For example, the surface of the wiring portion 20 of the terminal body 10 is not provided with a plating layer and is bare. When the wiring portion 20 of the terminal body is connected with the wire 80, the connection surface is connected in a pressing manner, so that the two connection surfaces are directly in contact, the contact resistance is reduced, the voltage drop between the wiring portion 20 of the terminal body 10 and the coil body 30 and the wire 80 is reduced, and the electrical performance of the terminal body 10 is improved.

[0196] In an embodiment, the terminal body 10 and the coil body 30 are provided with a plating layer on part of the surface. When the environment of the terminal body 10 is relatively harsh, the corrosion resistance is improved by the plating layer; when the materials of the terminal body 10 and the coil body 30 and the wire 80 are different, a plating layer metal is needed for transition.

[0197] In an embodiment, the wire 80 is made of aluminum. In the field of electrical connection, copper wires are used for current conduction. Copper has high conductivity and good ductility. However, as the price of copper rises, the cost of using copper as a wire material will be higher and higher. Therefore, people begin to look for substitutes for metal copper to reduce costs. The content of aluminum in the earth's crust is about 7.73%, and the price is relatively low after optimization of refining technology. Compared with copper, aluminum is lighter in weight and has conductivity only second to copper. Therefore, in the field of automobile electrical connection, aluminum is used to replace copper, which is a development trend.

[0198] However, due to the large difference in electrode potential between copper and aluminum, the wiring portion 20 made of copper and the wire 80 made of aluminum are directly connected, and electrochemical corrosion occurs between copper and aluminum. Aluminum is easily corroded, which increases the resistance of the connection surface and easily causes serious consequences in electrical connection, such as functional failure, fire, etc. Therefore, a plating layer is needed between copper and aluminum to reduce the difference in electrode potential between copper and aluminum and improve the electrical performance between copper and aluminum, while greatly prolonging the service life of the terminal.

[0199] In another embodiment, when the wire 80 is made of aluminum, the terminal body 10 is also made of aluminum. In this case, the connection between the wire 80 and the wiring portion 20 can not use metal for transition and can be directly connected in a crimping manner.

[0200] The material of the plating layer of the terminal body 10 and the plating layer of the coil body 30 can be the same or different. Preferably, the material of the plating layer of the terminal body 10 and the plating layer of the coil body is different. Specifically, the material of the plating layer of the wiring portion 20 and the plating layer of the overhanging end 402 of the crimping unit 40 is different.

[0201] The plating layer of the terminal body 10 and the plating layer of the coiled body 30 can be the same or different. Preferably, the plating layer of the terminal body 10 and the plating layer of the coiled body 30 are different. Specifically, the plating layer of the wiring portion 20 and the plating layer of the overhanging end 402 of the crimping unit 40 are different.

[0202] In an embodiment, the plating layer material contains one or more of nickel, cadmium, manganese, zirconium, cobalt, tin, titanium, chromium, gold, silver, zinc, tin-lead alloy, silver-antimony alloy, palladium, palladium-nickel alloy, graphite-silver, graphene-silver, hard silver, and silver-gold-zirconium alloy. In most cases, the terminal body 10 and the coiled body 30 are made of copper material. Copper is a kind of active metal, which will be oxidized with oxygen and water during use. Therefore, one or more kinds of non-active metal are needed as the plating layer to prolong the service life of the terminal body 10 and the coiled body 30. The conductivity and stability of the above-mentioned metals are better than copper or copper alloy, which can make the terminal body 10 and the coiled body 30 have better electrical performance and longer service life.

[0203] In order to demonstrate the influence of different plating layer materials on the overall performance of the terminal body 10 and the coiled body 30, the inventors use the terminal body 10 and the coiled body 30 of the same specification and material but with different plating layer materials to conduct a series of corrosion resistance time tests, and the experimental results are shown in Table 12.

[0204] The corrosion resistance time test in Table 12 is to put the terminal body 10 and the coiled body 30 sample into a salt spray test chamber, spray salt mist on each position of the sample, take it out every 20 hours, clean and observe the surface corrosion, which is one cycle. The test is stopped when the surface corrosion area is greater than 10% of the total area, and the cycle number at that time is recorded. In this embodiment, the cycle number less than 80 is considered unqualified.

[0205] Table 12: Influence of different plating layer materials on sample corrosion resistance

[0206]

[0207] From Table 12, it can be seen that when the plating layer material contains commonly used metals such as tin, nickel, and zinc, the experimental results are not as good as other selected metals. The experimental results of other selected metals exceed the standard value more and the performance is more stable. Therefore, the inventors select one or more of nickel, cadmium, manganese, zirconium, cobalt, tin, titanium, chromium, gold, silver, zinc, tin-lead alloy, silver-antimony alloy, palladium, palladium-nickel alloy, graphite-silver, graphene-silver, hard silver, and silver-gold-zirconium alloy as the plating layer material.

[0208] In an embodiment, the plating layer is set by electroplating, chemical plating, magnetron sputtering, or vacuum plating.

[0209] Electroplating method is a process of plating a thin layer of other metal or alloy on the surface of metal by using electrolysis principle.

[0210] Chemical plating method is a process of producing metal deposition by controllable oxidation-reduction reaction under the catalysis of metal.

[0211] Magnetron sputtering method is a method of increasing the probability of ion generation by making electrons run spirally near the target surface through the interaction of magnetic field and electric field, and making the generated ions hit the target surface under the action of electric field to sputter the target material.

[0212] Vacuum plating method is a method of depositing various metal and non-metal thin films on the surface of parts by distillation or sputtering under vacuum condition.

[0213] When the wiring terminal is used, after the wire 80 is inserted into the accommodation cavity 21, the coiled body 30 is rotated to make the crimping unit 40 enter the accommodation cavity 21, so that the wire 80 can be crimped to the inner wall of the accommodation cavity 21, and the electrical performance and mechanical performance are met. The wiring terminal has the following advantages:

[0214] (1) The wire 80 and the wiring terminal are connected stably and are not easy to fall off, which ensures the electrical performance and mechanical performance;

[0215] (2) The crimping unit 40 can be a conductive metal, which increases the conduction area of the wire 80 and the wiring terminal and reduces the heat generation at the connection;

[0216] (3) Through the retreat prevention mechanism 62 and the retreat prevention groove 61, the coiled body 30 is rotated to a certain position, the retreat prevention mechanism 62 and the retreat prevention groove 61 can fix the coiled body 30 and prevent it from being reversed, so as to fix the crimping unit 40 in the accommodation cavity 21;

[0217] (4) By rotating the force applying part 70, it is convenient to use a wrench tool to drive the coiled body 30 to rotate;

[0218] (5) The crimping tool can be omitted, and only a general tool such as a wrench can be used to connect the wiring terminal and the wire 80;

[0219] (6) The wiring terminal has simple structure and is convenient to operate, and is suitable for wire harness maintenance and other scenes.

[0220] Scheme two

[0221] The terminal wiring structure comprises a wire 80 and the above-mentioned wiring terminal; the wire 80 is inserted into the accommodation cavity 21, and the crimping unit 40 extends into the accommodation cavity 21 through the insertion slot 22 and is in contact with the wire 80.

[0222] The terminal wiring mechanism includes the functions and effects of the above-described wiring terminal, and thus a detailed description thereof will not be repeated here.

[0223] In an embodiment of the present application, the wire 80 is a flexible conductor, so that the crimping unit 40 is inserted into the wire 80 or between the wire 80 and the inner wall of the accommodating cavity 21, and the wire 80 is deformed to tightly contact the inner wall of the accommodating cavity 21. The wire 80 can be a whole conductor made of a flexible material, or a wire bundle composed of a plurality of metal wires, so that the wire 80 is easily deformed. The material of the core of the wire 80 contains one or more of aluminum, phosphorus, tin, copper, iron, manganese, chromium, titanium, and lithium.

[0224] Further, the wire 80 includes a plurality of metal wires, and the crimping unit 40 can be inserted from the side of the wire 80 to extend at least partially between the plurality of metal wires.

[0225] In an embodiment, the wire 80 is provided with an insulating layer 81, as shown in Figure 1 The insulating layer 81 is removed at the end of the wire 80, and the end is inserted into the accommodating cavity 21, and the insulating layer 81 guarantees the insulation of the wire 80.

[0226] In an embodiment, the sum of the initial volume of the portion of the wire 80 located in the accommodating cavity 21 and the initial volume of the portion of the crimping unit 40 entering the accommodating cavity 21 is greater than or equal to the initial volume of the accommodating cavity 21, so that after the crimping unit 40 extends into the accommodating cavity 21, the wire 80 is guaranteed to tightly contact the inner wall of the accommodating cavity 21, and the mechanical and electrical properties are enhanced.

[0227] In an embodiment, the maximum radial cross-sectional area of the crimping unit 40 after being in contact with the wire 80 is greater than or equal to the maximum radial cross-sectional area of the accommodating cavity 21, so that after the crimping unit 40 extends into the accommodating cavity 21, the wire 80 is guaranteed to tightly contact the inner wall of the accommodating cavity 21, and the mechanical and electrical properties are enhanced.

[0228] The above only describes several embodiments of the present application, and those skilled in the art can make various modifications or changes to the embodiments of the present application according to the disclosed content of the application file without departing from the spirit and scope of the present application.

Claims

1. A terminal block, characterized in that, include: Terminal body and coil; The terminal body includes a wiring portion and an electrical connection portion for connecting to an electrical device. The wiring portion is provided with a receiving cavity for accommodating wires, and the side wall of the receiving cavity is provided with a plug-in groove. The roll-shaped body is rotatably sleeved outside the wiring portion, and the roll-shaped body is provided with a crimping unit, which can extend into the receiving cavity through the insertion groove; The roll body includes a roll plate that extends around the outer periphery of the wiring portion, and the crimping unit is formed at the end of the roll plate.

2. The terminal block according to claim 1, characterized in that, The ratio of the circumference of the coil to the circumference of the wiring portion ranges from 75% to 100%.

3. The terminal block according to claim 1, characterized in that, The ratio of the axial length of the coil to the axial length of the connector is in the range of 5%-100%.

4. The terminal block according to claim 1, characterized in that, The roll-shaped body includes a first cylinder, the first cylinder and the roll-shaped plate are distributed along the axial direction of the roll-shaped body and the first cylinder and the roll-shaped plate are fixedly connected.

5. The terminal block according to claim 4, characterized in that, The first cylinder is fixed to both sides of the rolled plate.

6. The terminal block according to claim 1, characterized in that, The roll-shaped body includes a second cylindrical body, and one end of the pressing unit is fixed to the inner wall of the second cylindrical body.

7. The terminal block according to claim 1, characterized in that, The crimping unit is located at least partially within the insertion slot, and the overhanging end of the crimping unit tends to extend into the receiving cavity.

8. The terminal block according to claim 1, characterized in that, The inner sidewall of the crimping unit is provided with a protrusion, and / or the outer sidewall of the crimping unit is provided with a protrusion.

9. The terminal block according to claim 1, characterized in that, The end of the crimping unit that extends into the receiving cavity is provided with a chamfer or a rounded corner.

10. The terminal block according to claim 1, characterized in that, The crimping unit has a fixed end and a cantilever end. The fixed end is fixed to the roll body, and the thickness of the crimping unit gradually decreases from the fixed end to the cantilever end.

11. The terminal block according to claim 1, characterized in that, The volume of the portion of the crimping unit that enters the receiving cavity accounts for 1%-45% of the volume of the receiving cavity.

12. The terminal block according to claim 1, characterized in that, The length of the crimping unit in the axial direction of the roll is 5%-95% of the axial length of the roll.

13. The terminal block according to claim 1, characterized in that, The ratio of the maximum thickness of the crimping unit to the width of the insertion groove ranges from 10% to 50%.

14. The terminal block according to claim 1, characterized in that, The roll-shaped body is provided with multiple circumferentially distributed crimping units.

15. The terminal block according to claim 14, characterized in that, The plurality of the pressing units are evenly distributed along the circumference of the roll body.

16. The terminal block according to claim 1, characterized in that, The cavity is a cylindrical cavity, a frustum cavity, a prismatic cavity, or a frustum cavity.

17. The terminal block according to claim 1, characterized in that, The plug slot has a plug slot sidewall extending along the axial direction of the wiring portion, and two opposite plug slot sidewalls are parallel to each other.

18. The terminal block according to claim 1, characterized in that, The insertion slot has a central plane and a sidewall extending along the axial direction of the wiring portion. The central plane passes through the central axis of the receiving cavity, and the angle between the sidewall and the central plane is in the range of 0° to 45°.

19. The terminal block according to claim 1, characterized in that, The plug slot has a central plane and a sidewall extending along the axial direction of the wiring portion. The central plane passes through the central axis of the receiving cavity, and the sidewalls of the plug slots of the plurality of plug slots have the same inclination angle relative to the corresponding central plane.

20. The terminal block according to claim 1, characterized in that, The outer wall of the wiring section is provided with a backstop groove, and the coiled body is provided with a backstop mechanism that has an inward extending tendency.

21. The terminal block according to claim 1, characterized in that, The inner wall of the roll is provided with a backstop groove, and the wiring part is provided with a backstop mechanism that has an outward extension tendency.

22. The terminal block according to claim 20 or 21, characterized in that, The anti-retraction mechanism is the anti-retraction piece.

23. The terminal block according to claim 21 or 21, characterized in that, The anti-reverse mechanism is a flexible pop-out mechanism.

24. The terminal block according to claim 1, characterized in that, The rolled body includes a rotational force-applying part, which includes multiple force-applying planes.

25. The terminal block according to claim 1, characterized in that, The terminal body is made of one or more of the following materials: nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

26. The terminal block according to claim 1, characterized in that, The terminal body material contains a tellurium-copper alloy, and the tellurium content in the tellurium-copper alloy is 0.1% to 5%.

27. The terminal block according to claim 1, characterized in that, The terminal body material contains a beryllium copper alloy, and the beryllium content in the beryllium copper alloy is 0.05% to 5%.

28. The terminal block according to claim 1, characterized in that, The terminal body material contains phosphor bronze alloy, and the phosphorus content in the phosphor bronze alloy is 0.01% to 1.5%.

29. The terminal block according to claim 1, characterized in that, The terminal body material contains a leaded brass alloy, and the lead content in the leaded brass alloy is 0.1% to 5%.

30. The terminal block according to claim 1, characterized in that, The material of the roll contains one or more of the following: nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

31. The terminal block according to claim 1, characterized in that, The material of the rolled body is different from the material of the terminal body.

32. The terminal block according to claim 1, characterized in that, At least a portion of the surface of the terminal body is provided with a plating layer, and / or at least a portion of the surface of the coil is provided with a plating layer.

33. The terminal block according to claim 1, characterized in that, At least a portion of the surface of the terminal body that contacts the wire is exposed, and / or at least a portion of the surface of the coil that contacts the wire is exposed.

34. The terminal block according to claim 32, characterized in that, The plating material of the terminal body is different from that of the coil.

35. The terminal block according to claim 32, characterized in that, The plating thickness of the terminal body is different from that of the coil body.

36. The terminal block according to claim 32, characterized in that, The coating material contains one or more of the following: nickel, cadmium, manganese, zirconium, cobalt, tin, titanium, chromium, gold, silver, zinc, tin-lead alloy, silver-antimony alloy, palladium, palladium-nickel alloy, graphite silver, graphene silver, hard silver, and silver-gold-zirconium alloy.

37. A terminal wiring structure, characterized in that, include: The wire and the terminal block according to any one of claims 1-36; The wire is inserted into the receiving cavity, and the crimping unit extends into the receiving cavity through the insertion slot and contacts and engages with the wire.

38. The terminal wiring structure according to claim 37, characterized in that, The conductor is a flexible conductor, and the conductor comprises multiple metal wires, with the crimping unit extending at least partially between the multiple metal wires.

39. The terminal wiring structure according to claim 37, characterized in that, The wire is a rigid conductor, and there is a gap between the wire and the inner wall of the receiving cavity. The crimping unit extends at least partially into the gap.

40. The terminal wiring structure according to claim 37, characterized in that, The conductor core is made of one or more of the following materials: aluminum, phosphorus, tin, copper, iron, manganese, chromium, titanium, and lithium.

41. The terminal wiring structure according to claim 37, characterized in that, The sum of the initial volume of the portion of the conductor located within the receiving cavity and the initial volume of the portion of the crimping unit entering the receiving cavity is greater than or equal to the initial volume of the receiving cavity.

42. The terminal wiring structure according to claim 37, characterized in that, The maximum radial cross-sectional area of ​​the crimping unit after contact and mating with the wire is greater than or equal to the maximum radial cross-sectional area of ​​the receiving cavity.

Images