A soft conductive structure and a connecting device for heavy load electrical joints

Abstract

The application discloses a soft conductive structure and a connecting device for a large-load electrical connector, and belongs to the technical field of electrical connection structures. The soft conductive structure comprises a soft conductive body; the soft conductive body is a column body, a plurality of first grooves are arranged in an array on a first surface, a plurality of second grooves are arranged in an array on a second surface, and the first grooves and the second grooves are arranged at intervals; and the first surface and the second surface are opposite. After the soft conductive structure is compressed, the boss and the ultra-thin connecting part are bent and deformed under pressure, and the electrical contact surface of the terminal is completely in contact with the first surface and the second surface of the soft conductive structure, thereby meeting the dual requirements of large-area deformation and local boss fitting. The connecting device for the large-load electrical connector has small contact resistance in actual application and good long-term reliability, ensures basic contact resistance and stability, and does not cause uncertainty of contact resistance and instability of long-term work caused by rigid matching of conventional electrical ports.

Description

Technical Field

[0001] This application relates to the field of electrical connection structure technology, and in particular to a flexible conductive structure and a connection device for high-load electrical joints. Background Technology

[0002] In the field of electrical connection technology, high-load electrical connectors generally adopt a direct contact connection method using rigid metal terminals. However, due to limitations in machining precision and assembly technology, it is difficult to achieve a completely tight fit between the actual contact surfaces, resulting in microscopic air gaps and insufficient contact area. When transmitting large currents, traditional rigid connection structures cannot adaptively compensate for contact surface separation caused by vibration, thermal expansion and contraction, or installation deviations, leading to a gradual increase in contact resistance over long-term use.

[0003] Increased contact resistance triggers a vicious cycle of contact surface heating, oxidation, and further resistance increase, causing the contact temperature to rise sharply over time. This heat is transferred along the conductor to the cable insulation layer. Cable insulation typically only allows operating temperatures of 70°C or 90°C. When temperatures exceed these limits, the insulation layer ages rapidly, eventually leading to combustion. This can cause electrical faults and even fires, jeopardizing long-term electrical stability. While industry standards require regular temperature checks, manual inspections are inefficient and struggle to detect latent defects promptly. Often, problems are only discovered after insulation overheating and carbonization have triggered electrical faults or accident alarms, or even fires, by which time serious consequences may have already occurred. Furthermore, additional power inspection personnel are needed, increasing the workload.

[0004] A current method for connecting electrical connectors using soft conductive pads addresses the aforementioned problems. However, the structure of soft conductive pads often only allows for simple planar deformation. When macroscopic bending deformation occurs in the connecting components, existing soft conductive pads cannot achieve adaptive compensation through their own structure. Furthermore, when microscopic protrusions or foreign objects exist on the contact surface, there is a lack of targeted local deformation mechanisms to eliminate poor contact. This limitation makes it difficult for existing soft conductive pads to simultaneously meet the dual requirements of large-area deformation and fitting of local protrusions, resulting in technical bottlenecks such as high contact resistance and insufficient long-term reliability in practical applications of the connecting device. Utility Model Content

[0005] This application provides a soft conductive structure and a connection device for high-load electrical connectors, which solves the problem that existing soft conductive pads cannot simultaneously meet the dual requirements of large-area deformation and local protrusion fitting, resulting in the connection device still having problems such as large contact resistance and insufficient long-term reliability in practical applications.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is as follows: In a first aspect, embodiments of the present invention provide a soft conductive structure, including a soft conductive body; The soft conductive body is a column with multiple first grooves arrayed on the first surface and multiple second grooves arrayed on the second surface, with the first grooves and the second grooves spaced apart. The first face and the second face are opposite each other.

[0007] In conjunction with the first aspect, in one possible implementation, the first groove includes a first longitudinal sub-groove and a first transverse sub-groove; The second groove includes a second longitudinal sub-groove and a second transverse sub-groove; The soft conductive body has a plurality of first longitudinal sub-grooves arranged in a horizontal linear array on its upper bottom surface and a plurality of second longitudinal sub-grooves arranged in a horizontal linear array on its lower bottom surface, with the first longitudinal sub-grooves and the second longitudinal sub-grooves spaced apart. The soft conductive body has a plurality of first transverse sub-grooves arranged in a longitudinal straight line array on the upper bottom surface and a plurality of second transverse sub-grooves arranged in a longitudinal straight line array on the lower bottom surface, with the first transverse sub-grooves and the second transverse sub-grooves spaced apart.

[0008] In conjunction with the first aspect, in one possible implementation, the first central plane of the first longitudinal sub-groove forms a first acute angle with the longitudinal section passing through the center of the soft conductive body; The second central plane of the second longitudinal sub-groove forms a second acute angle with the longitudinal section passing through the center of the soft conductive body; And / or, the third center plane of the first transverse sub-groove forms a third acute angle with the transverse cross section passing through the center of the soft conductive body; The fourth central plane of the second transverse sub-groove forms a fourth acute angle with the transverse cross section passing through the center of the soft conductive body.

[0009] In conjunction with the first aspect, in one possible implementation, the first groove includes a first radial sub-groove, and the second groove includes a second radial sub-groove; A first axial through hole is provided in the middle of the column, and the radial cross section of the first axial through hole is similar to the outer contour of the radial cross section of the column. Multiple axially extending first radial sub-grooves are arranged in a ring array around their own central axis on the inner wall of the first axial through hole. The outer wall of the soft conductive body is provided with a plurality of axially extending second radial sub-grooves arranged in a ring array around its own central axis. The first radial sub-groove and the second radial sub-groove are spaced apart.

[0010] In conjunction with the first aspect, in one possible implementation, the first groove further includes a first circumferential sub-groove, and the second groove further includes a second circumferential sub-groove; Multiple first circumferential sub-grooves are arranged in a linear array along the axial direction on the surface of the first axial through hole. Multiple second circumferential sub-grooves are arranged in a linear array along the axial direction on the outer wall of the soft conductive body. The first circumferential sub-groove and the second circumferential sub-groove are spaced apart.

[0011] In conjunction with the first aspect, in one possible implementation, the soft conductive body includes a plurality of fan-ring blocks, which together form the column.

[0012] In conjunction with the first aspect, in one possible implementation, the radial cross-section of the soft conductive body gradually increases in area from the upper surface to the lower surface.

[0013] Secondly, this utility model provides a connection device for a high-load electrical connector, including the soft conductive structure described above, and further including a first terminal and a second terminal; the end faces of the first terminal and the second terminal are opposite to each other and respectively attached to the first and / or second surfaces of the soft conductive structure.

[0014] In conjunction with the second aspect, in one possible implementation, the connecting device for the high-load electrical connector further includes a positioning post, wherein the first terminal, the second terminal, and the flexible conductive structure are all provided with a second axial through hole; The first terminal and the second terminal are respectively attached to the first and second surfaces of the flexible conductive structure; The first terminal block, the second terminal block, and the flexible conductive structure are sleeved on the positioning post through the second axial through hole.

[0015] In conjunction with the second aspect, in one possible implementation, the connecting device for high-load electrical connectors also includes a fixed cylinder; The first terminal and the second terminal are respectively attached to the first and second surfaces of the flexible conductive structure; The fixing sleeve is fixed to the outer wall of the first terminal and the second terminal.

[0016] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages: In practical use, the end faces of the first and second terminals of the flexible conductive structure provided in this embodiment are opposite to each other and respectively attached to the first and / or second surfaces of the flexible conductive structure. Because the first surface of the flexible conductive structure has multiple first grooves arranged in an array, and the second surface has multiple second grooves arranged in an array, with the first and second grooves spaced apart and the first and second surfaces facing each other, the flexible conductive structure forms adjacent bosses and interconnected, easily bendable, ultra-thin connecting portions. This structure causes the bosses and ultra-thin connecting parts of the flexible conductive structure to bend and deform under pressure, cutting them into small areas. This concentrates the pressure on certain bosses when pressure is uneven, generating greater pressure and causing the contact surfaces of the bosses to deform under pressure, achieving a perfect fit. The electrical contact surfaces of the terminals maintain complete contact with the first and second protrusions of the flexible conductive structure. When the first and second terminals undergo macroscopic bending deformation, the flexible conductive structure can adaptively compensate through its own structure. When microscopic protrusions or foreign objects exist on the contact surface, the hardness of the flexible conductive structure ensures that the pressure on the first and second terminals relative to the flexible conductive structure during compression is controlled. The pressure exerted by the protruding material on the flexible conductive structure forces the protrusion into the structure, ensuring a good fit between the first and second terminals and the flexible conductive structure. The local deformation mechanism of the flexible conductive structure eliminates poor contact, resulting in low contact resistance between the flexible conductive structure and the first and second terminals. In other words, the actual contact area between the first and second terminals and the flexible conductive structure is much larger than the area in the circuit, ensuring that the contact resistance between the flexible conductive structure and the first and second terminals is less than the DC resistance of the circuit conductor. This allows the flexible conductive structure to simultaneously meet the dual requirements of large-area deformation and proper fit of the local protrusion, reducing contact resistance and improving long-term reliability. Furthermore, the complete contact surface between the flexible conductive structure and the first and second terminals forces out air (especially oxygen), preventing overheating caused by poor contact. Because there is no oxygen present at the contact surface, oxidation is fundamentally prevented, thus fundamentally resolving the vicious cycle of contact surface heating-oxidation-increased contact resistance (poor contact)-further heating and oxidation. This ensures a long-term stable electrical connection for the terminals. The interconnected first and second grooves within the flexible conductive structure, designed for boss deformation, also effectively dissipate heat generated by the flexible conductive structure during operation due to contact resistance on both sides of the boss. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a first embodiment of the soft conductive structure provided in this application; Figure 2 for Figure 1 Half section along line AA; Figure 3 This is a schematic diagram of a second embodiment of the soft conductive structure provided in this application. Figure 4 for Figure 3 Sectional view along the BB direction; Figure 5 This is a schematic diagram of a third embodiment of the soft conductive structure provided in this application. Figure 6 for Figure 5 C-axis sectional view; Figure 7 This is a schematic diagram of a fourth embodiment of the soft conductive structure provided in this application. Figure 8 This is a schematic diagram of the fifth embodiment of the soft conductive structure provided in this application. Figure 9 for Figure 8 Sectional view along the DD direction; Figure 10 A schematic diagram of the structure of the spring washer of the first type of high-load electrical connector provided in the embodiment of this application, in its natural state; Figure 11 Schematic diagram of the structure of the second terminal block provided in the embodiments of this application Figure 1 ; Figure 12 Schematic diagram of the structure of the second terminal block provided in the embodiments of this application Figure 2 ; Figure 13 A schematic diagram of the structure of the first type of high-load electrical connector connecting device with the spring washer in the working state (pressed) according to the embodiments of this application; Figure 14 A diagram showing the state of the soft conductive structure provided in the embodiments of this application during use; Figure 15 Schematic diagram of the second type of connection device for high-load electrical connectors provided in the embodiments of this application. Figure 1; Figure 16 Schematic diagram of the second type of connection device for high-load electrical connectors provided in the embodiments of this application. Figure 2 ; Figure 17 This is a schematic diagram of another second terminal block provided in an embodiment of this application; Figure 18 This is a schematic diagram of the third type of connection device for high-load electrical connectors provided in the embodiments of this application.

[0019] Icons: 1- Soft conductive structure; 11- Soft conductive body; 111- First groove; 111A- First longitudinal sub-groove; 111B- First transverse sub-groove; 111C- First radial sub-groove; 112- Second groove; 112A- Second longitudinal sub-groove; 112B- Second radial sub-groove; 113- Fan ring block; 12- First central plane; 13- Longitudinal section; 14- Third central plane; α- First acute angle; β- Second acute angle; 2- Bolt; 3- First flat washer; 4- First terminal; 5- Second terminal; 6- Second flat washer; 7- Spring washer; 8- Third flat washer; 9- Nut; 10- Cable insulation layer; 20- Cable conductor; 30- Fixing sleeve; 40- Passive locking steel sleeve; 50- Locking steel sleeve; 60- Nylon insulating sleeve; 70- Nylon fixing bolt; Detailed Implementation The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0020] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0021] Please refer to Figures 1-9 As shown, this embodiment of the invention provides a soft conductive structure 1, including a soft conductive body 11. The material used for the soft conductive body 11 is soft and has good ductility. Its properties should ensure that after heat treatment, its hardness and toughness can meet the requirements of large-area deformation, local deformation, and long-term good electrical contact under the pressure applied by an external spring after deformation, i.e., the contact surface should be free of air. For example, it can be made from materials with sufficient resistivity and relatively soft texture, such as oxygen-free copper, aluminum, or aluminum alloys, through heat treatment softening. Preferably, it is made from oxygen-free copper that has been annealed and softened. It can also be made from two metals, such as copper and aluminum, pressed together in advance.

[0022] The flexible conductive body 11 is a column. Multiple first grooves 111 are arrayed on the first surface, and multiple second grooves 112 are arrayed on the second surface. The first grooves 111 and second grooves 112 are spaced apart to form bosses, reducing the size of local bosses in electrical appliances. Combined with a suitable heat treatment softening process and the action of a fastening spring washer, it achieves easy deformation. In practice, the electrical connection surface is larger than n times the cross-sectional area of ​​the wire. Therefore, to ensure that the direct contact area of ​​the boss is larger than the cross-sectional area of ​​the wire conductor, the contact area of ​​the flexible conductive structure 1 can be larger, making its contact resistance less than the resistance of the circuit, preventing overheating of the circuit, and ensuring good long-term contact. The first and second surfaces are opposite each other. When the height of the column is small, the flexible conductive body 11 is as follows: Figure 2 As shown in the sheet-like shape, when the height of the column is relatively high, the soft conductive body 11 is as follows. Figure 5 and Figure 6 The column can be, for example, Figure 1 and Figure 5 The cylinder shown can also be a prism or other shape depending on the actual application requirements. For example... Figure 1 and Figure 2 As shown, the first and second faces can be the top and bottom surfaces of the cylinder. Figures 5-9 As shown, when a first axial through hole is provided in the middle of the column, the first surface and the second surface can be the inner wall of the first axial through hole and the outer wall of the soft conductive body 11.

[0023] In practical use, the end faces of the first terminal 4 and the second terminal 5 of the flexible conductive structure 1 provided in this embodiment of the utility model face each other and are respectively attached to the first surface and / or the second surface of the flexible conductive structure 1. Since a plurality of first grooves 111 are arrayed on the first surface of the flexible conductive structure 1 and a plurality of second grooves 112 are arrayed on the second surface, and the first grooves 111 and the second grooves 112 are spaced apart, and the first surface and the second surface face each other, the flexible conductive structure 1 forms adjacent bosses on both sides and connected, easily bendable, ultra-thin connecting parts. This structure causes the bosses and ultra-thin connecting parts of the flexible conductive structure 1 to bend and deform under pressure, cutting them into sufficiently small areas. This ensures that when pressure is uneven, the contact pressure is concentrated on a portion of the bosses, generating greater pressure. This causes the contact surfaces of the bosses to experience concentrated force and compressive deformation, achieving a perfect fit. The electrical contact surfaces of the terminals maintain complete contact with the first and second protrusions of the flexible conductive structure 1. When the first terminal 4 and second terminal 5 undergo macroscopic bending deformation, the flexible conductive structure 1 can adaptively compensate through its own structure. When microscopic protrusions or foreign objects exist on the contact surface, the hardness of the flexible conductive structure 1 ensures that the pressure on the first terminal 4 and second terminal 5 relative to the flexible conductive structure 1 during compression is directed towards the protrusions. The pressure exerted by the object on the flexible conductive structure 1 forces the protrusion into the interior of the flexible conductive structure 1, thereby ensuring a good fit between the first terminal 4 and the second terminal 5 and the flexible conductive structure 1. The local deformation mechanism of the flexible conductive structure 1 eliminates poor contact, resulting in a low contact resistance between the flexible conductive structure 1 and the first terminal 4 and the second terminal 5. In other words, the actual contact area between the first contact terminal, the second terminal 5, and the flexible conductive structure 1 is much larger than the area in the circuit, ensuring that the contact resistance between the flexible conductive structure 1 and the first terminal 4 and the second terminal 5 is less than the DC resistance of the circuit conductor. This allows the flexible conductive structure 1 to simultaneously meet the dual requirements of large-area deformation and proper fit of the local protrusion, reducing contact resistance and ensuring good long-term reliability. Simultaneously, the complete contact surface between the flexible conductive structure 1 and the first and second contact terminals forces out any air (especially oxygen), preventing overheating caused by poor contact at the contact points. Because there is no oxygen present at the contact surface, oxidation is fundamentally prevented, thus fundamentally resolving the vicious cycle of contact surface heating-oxidation-increased contact resistance (poor contact)-further heating and oxidation, thereby achieving a long-term stable electrical connection for the terminals. The interconnected first groove 111 and second groove 112 inside the flexible conductive structure 1, used for the deformation of the boss, also effectively dissipate heat generated by the flexible conductive structure 1 during operation due to the contact resistance of the contact surface on both the upper and lower surfaces of the boss.

[0024] Furthermore, by controlling the size of the segmented boss area and using a suitable heat treatment softening process, the ability to withstand pressure during deformation can be controlled under the action of the fastening spring washer, thereby allowing the hardness of the soft conductive structure 1 to be controlled within a wide range. Of course, the first groove 111 and the second groove 112 can also be configured as through holes.

[0025] like Figures 14-16 As shown, the soft conductive structure 1 provided in this application embodiment can make good contact with the first terminal 4 and the second terminal 5 when squeezed by an arc surface, squeezed vertically or squeezed at an angle.

[0026] like Figures 1-4 As shown, the first groove 111 includes a first longitudinal sub-groove 111A and a first transverse sub-groove 111B. Figure 1 As shown, the vertical direction is Figure 1 The OY axis direction. Lateral direction is... Figure 1 In the OX axis direction.

[0027] The second groove 112 includes a second longitudinal sub-groove 112A and a second transverse sub-groove. A plurality of first longitudinal sub-grooves 111A are arranged in a transverse linear array on the upper bottom surface of the flexible conductive body 11, and a plurality of second longitudinal sub-grooves 112A are arranged in a transverse linear array on the lower bottom surface. The first longitudinal sub-grooves 111A and the second longitudinal sub-grooves 112A are spaced apart.

[0028] The soft conductive body 11 has a plurality of first transverse sub-grooves 111B arranged in a longitudinal straight line array on the upper bottom surface and a plurality of second transverse sub-grooves arranged in a longitudinal straight line array on the lower bottom surface. The first transverse sub-grooves 111B and the second transverse sub-grooves are arranged at intervals.

[0029] The flexible conductive structure 1 provided in this application embodiment not only improves the flexibility of the flexible conductive body 11 in multi-directional deformation under pressure by setting crisscrossing sub-grooves, enabling it to better adapt to the non-uniform pressure distribution caused by macroscopic bending or installation deviation of the terminal block, but also ensures that the contact surface achieves more full fit in the three-dimensional direction through the spaced sub-grooves, thereby significantly enhancing the adaptive compensation capability and contact stability of the flexible conductive structure 1.

[0030] Reference Figure 2 As shown, the first central plane 12 of the first longitudinal sub-groove 111A forms a first acute angle α with the longitudinal section 13 passing through the center of the flexible conductive body 11. The second central plane of the second longitudinal sub-groove 112A forms a second acute angle β with the longitudinal section 13 passing through the center of the flexible conductive body 11. The magnitudes of the first acute angle α and the second acute angle β can be the same or different, and their directions can be the same or opposite. Figure 2 This diagram shows a structure where the first acute angle α and the second acute angle β are of the same size but opposite in direction. And / or, the third center plane 14 of the first transverse sub-groove 111B forms a third acute angle with the transverse cross-section passing through the center of the flexible conductive body 11. The fourth center plane of the second transverse sub-groove forms a fourth acute angle with the transverse cross-section passing through the center of the flexible conductive body 11. Similarly, the magnitudes of the third acute angle and the fourth acute angle can be the same or different, and their directions can be the same or opposite.

[0031] When the first acute angle α and the second acute angle β are in opposite directions, the soft conductive structure 1 provided in this embodiment is a platform-shaped boss that is either inverted and adjacent to each other, with the top smaller than the bottom or the top larger than the bottom. When its lateral inclined surface is subjected to pressure, it can tilt to the side or bulge and deform to achieve a gapless fit between the upper and lower end faces and the two terminals. When the first terminal 4 and the second terminal 5 undergo a large range of bending deformation, the soft conductive structure 1 can use the pressure-induced tilting and lateral deformation of the boss itself to cope with the deformation. This allows the boss of the soft conductive structure 1 to generate controllable lateral deformation when subjected to axial pressure, thereby more accurately fitting the microscopic protrusions or foreign objects on the contact surface, effectively eliminating the hidden danger of poor local contact, and improving the adaptability to complex deformation modes.

[0032] like Figures 5-9 As shown, another embodiment of this utility model provides a first groove 111 including a first radial sub-groove 111C, and a second groove 112 including a second radial sub-groove 112B. A first axial through hole is provided in the middle of the column, and the radial cross-section of the first axial through hole is similar to the outer contour of the radial cross-section of the column. Multiple axially extending first radial sub-grooves 111C are arranged in a ring array around their central axis on the inner wall of the first axial through hole. Multiple axially extending second radial sub-grooves 112B are arranged in a ring array around their central axis on the outer wall of the soft conductive body 11. The first radial sub-grooves 111C and the second radial sub-grooves 112B are spaced apart.

[0033] The soft conductive structure 1 provided in this application embodiment forms a multi-level deformation unit by setting a first radial sub-groove 111C and a second radial sub-groove 112B, which greatly enhances the adaptability of the soft conductive structure 1 to radial deformation, ensures that the soft conductive structure 1 can still maintain stable contact under high temperature or vibration environment, and improves the overall heat dissipation performance of the structure.

[0034] Furthermore, the first groove 111 further includes a first circumferential sub-groove, and the second groove 112 further includes a second circumferential sub-groove (not shown in the figure). A plurality of first circumferential sub-grooves are arranged in a linear array along the axial direction on the surface of the first axial through hole. A plurality of second circumferential sub-grooves are arranged in a linear array along the axial direction on the outer wall of the flexible conductive body 11. The first circumferential sub-grooves and the second circumferential sub-grooves are spaced apart.

[0035] The soft conductive structure 1 provided in this application embodiment further improves the axial deformation freedom of the soft conductive structure 1, enabling the soft conductive body 11 to better compensate for axial deformation caused by thermal expansion and contraction or mechanical stress, thereby maintaining the long-term fit of the contact surface and improving the reliability of long-term use.

[0036] like Figure 7 As shown, the soft conductive body 11 includes multiple fan-ring blocks 113, which together form a column. For example, there may be three, four, or five fan-ring blocks 113. Figure 7 A schematic diagram of a structure with four fan-ring blocks 113 is shown. By configuring the flexible conductive body 11 as multiple fan-ring blocks 113, the soft conductive structure 1 can be easily stored and placed. Furthermore, when the flexible conductive structure 1 is relatively tall, the assembly process is significantly simplified. This is particularly suitable for large or irregularly shaped connection devices, improving engineering practicality and maintenance convenience while ensuring overall structural consistency.

[0037] like Figure 8 and Figure 9 As shown, the radial cross-section of the flexible conductive body 11 gradually increases in area from the upper surface to the lower surface. That is, the flexible conductive body 11 is frustum-shaped. It can also be multiple blocks. The frustum-shaped flexible conductive structure 1 of this application optimizes the pressure transmission path, enabling the flexible conductive body 11 to produce more uniform deformation under pressure, avoiding edge stress concentration, thereby extending service life and enhancing resistance to large load impacts, further improving the stability and safety of the connection.

[0038] The soft conductive body 11 can also be made into various other shapes to meet various needs.

[0039] In practice, when the soft conductive body 11 of the soft conductive structure 1 is a tall column with a first axial through hole in the middle, the soft conductive structure 1 can be sleeved on the outside of the terminal block, or the terminal block can be sleeved on the outside of the soft conductive structure 1, depending on the actual application.

[0040] like Figures 10-13 As shown in Figure 18, another embodiment of this utility model provides a connecting device for a high-load electrical connector, including the aforementioned soft conductive structure 1, and further including a first terminal 4 and a second terminal 5. Figure 17 As shown, the flexible conductive structure 1 can be a separate gasket, or it can have the same structure on the electrical contact surface of the first terminal 4 or the second terminal 5. The end faces of the first terminal 4 and the second terminal 5 face each other and are respectively attached to the first and / or second surfaces of the flexible conductive structure 1. Specifically, as shown... Figure 10 and Figure 13As shown, the first terminal 4 and the second terminal 5 are respectively attached to the first and second surfaces of the flexible conductive structure 1. When the flexible conductive body 11 of the flexible conductive structure 1 is a tall column with a first axial through hole in the middle, the flexible conductive structure 1 can be sleeved on the outside of the first terminal 4, that is, the first terminal 4 is attached to the first surface of the flexible conductive structure 1. Alternatively, the first terminal 4 can be sleeved on the outside of the flexible conductive structure 1, that is, the first terminal 4 is attached to the second surface of the flexible conductive structure 1.

[0041] This embodiment uses the second terminal 5 as an example to illustrate the connection structure of the second terminal 5. (See also...) Figures 10-13 The end of the second terminal 5 away from the contact point is wrapped with the cable conductor 20, so that the second terminal 5 is stably connected to the cable conductor 20, and the rest of the cable conductor 20 is covered with the cable insulation layer 10.

[0042] The connecting device for high-load electrical connectors provided in this application embodiment has low contact resistance and good long-term reliability in practical applications due to the presence of the aforementioned soft conductive structure 1.

[0043] Continue to refer to Figures 10-13 As shown, the connecting device for high-load electrical connectors also includes a positioning post. The first terminal 4, the second terminal 5, and the flexible conductive structure 1 all have a second axial through hole. The first terminal 4 and the second terminal 5 are respectively attached to the first and second surfaces of the flexible conductive structure 1. The first terminal 4, the second terminal 5, and the flexible conductive structure 1 are sleeved onto the positioning post through the second axial through hole.

[0044] The device in this embodiment uses a positioning post to restrict the first terminal 4, the soft conductive structure 1, and the second terminal 5 to move only along the axial direction of the positioning post, which also facilitates positioning and installation.

[0045] Furthermore, the connecting device for high-load electrical connectors provided in this application embodiment also includes a blocking ring connected to the first end of the positioning post. The blocking ring can limit and fix one end of the stacked first terminal 4, the flexible conductive structure 1, and the second terminal 5, preventing them from falling off the positioning post.

[0046] For example, the positioning post and the blocking ring post of this utility model embodiment can be implemented by bolt 2. The bolt post of bolt 2 serves as the positioning post, and the nut serves as the blocking ring post. The first terminal 4, the soft conductive structure 1, and the second terminal 5 are stacked and sleeved on bolt 2, and the first terminal 4 is in contact with the nut of bolt 2.

[0047] Optionally, a fastener is movably connected to the second end of the positioning post. The fastener secures the end of the second terminal 5, preventing the terminal and the flexible conductive structure 1 from detaching from the second end of the positioning post. The material or size of the flexible conductive structure 1 is selected to ensure that its DC resistance along the longitudinal direction of the bolt 2 is not greater than the DC resistance of the conductor in the circuit.

[0048] For example, the locating pin and fastener are connected by a threaded structure.

[0049] Optionally, a spring washer 7 is provided between the second terminal 5 and the fastener. When fastening using the fastener's mating point, there may be over-tightening or under-tightening. Over-tightening causes excessive pressure between the first terminal 4, the flexible conductive structure 1, and the second terminal 5, potentially damaging these components. Under-tightening may result in a loose fit between the first terminal 4, the flexible conductive structure 1, and the second terminal 5, creating gaps and even causing poor electrical contact. Therefore, this invention utilizes the elasticity of the spring washer 7 to buffer this pressure, ensuring moderate pressure. The raised deformable surface of the flexible conductive structure 1 maintains 100% contact with the first terminal 4 and the second terminal 5 (the pressure can still deform the raised mating portion of the flexible conductive washer). Furthermore, even if the fastener loosens during long-term use, a tight fit can be maintained at the joint, preventing poor contact or even loss of contact.

[0050] Preferably, a first flat washer 3 is provided on the end face of the first terminal 4 away from the flexible conductive structure 1, and a second flat washer 6 is provided between the second terminal 5 and the spring washer 7. A third flat washer 8 is provided between the spring washer 7 and the fastener. In this embodiment, the third flat washer 8 is located at the second end of the bolt 2, and the first flat washer 3 is attached to the nut. During the tightening of the nut to fasten the first terminal 4, the flexible conductive structure 1, and the second terminal 5, the cooperation of the first flat washer 3, the spring washer 7, the second flat washer 6, and the third flat washer 8 can exert sustained pressure on the flexible conductive structure 1, while avoiding scratches or other damage to the terminals.

[0051] Optionally, in this embodiment, the fastener is a nut 9, which is threaded onto the bolt 2. The bolt 2 and nut 9 work together to assemble and fix the third flat washer 8, spring washer 7, second flat washer 6, second terminal 5, flexible conductive structure 1, first terminal 4, and first flat washer 3. Tightening the nut 9 causes the first terminal 4 and second terminal 5 to adhere to both sides of the flexible conductive structure 1. Under pressure, the protruding tips of the adjacent bosses on both sides of the flexible conductive structure 1 deform along with the electrical contact surfaces of the first terminal 4 and second terminal 5. This results in a tight, gapless fit between the deformed surfaces of the first terminal 4 and second terminal 5 and the protruding tips of the flexible conductive structure 1, and also removes air from the area where the electrical connection surfaces contact the deformed parts of the flexible conductive washer. This completely solves the problem of poor electrical contact and the resulting oxidation due to excessive contact resistance and overheating. Oxidation at the contact points is a major factor contributing to contact deterioration during long-term use. Furthermore, the use of spring washers 7 and flat washers ensures a tighter contact between the two terminals and the soft conductive structure 1, preventing them from coming out of contact.

[0052] like Figure 15 and Figure 16 As shown, another embodiment of the present invention provides a connecting device for a high-load electrical connector, which further includes a fixing cylinder 30. The first terminal 4 and the second terminal 5 are respectively attached to the first and second surfaces of the flexible conductive structure 1. The fixing cylinder 30 is sleeved onto the outer walls of the first terminal 4 and the second terminal 5, thereby fixing the first terminal 4 and the second terminal 5. Figure 15 and Figure 16 It can be concluded that in the high-load electrical connector connection device of this application embodiment, the soft conductive structure 1 can make good contact with the first terminal 4 and the second terminal 5 regardless of whether it is subjected to pressure in the vertical direction or oblique direction.

[0053] like Figure 18 As shown, another embodiment of the high-load electrical connector connection device provided in this application further includes a passive locking steel sleeve 40, a locking steel sleeve 50, a nylon insulating sleeve 60, and nylon fixing bolts 70. A passive locking steel sleeve 40 is fitted over the outside of the first terminal 4. A locking steel sleeve 50 is fitted over the outside of the passive locking steel sleeve 40, the first terminal 4, and the second terminal 5. A nylon insulating sleeve 60 is fitted over the outside of the locking steel sleeve 50. Multiple nylon fixing bolts 70 are provided on the side wall of the nylon insulating sleeve 60 to fix the nylon insulating sleeve 60 to the passive locking steel sleeve 40 and the locking steel sleeve 50 respectively.

[0054] The high-load electrical connector connection device of this utility model can ensure good electrical contact at the electrical connector and eliminate the possibility of oxidation of the electrical contact surface, thereby completely solving the potential faults of the electrical connector.

[0055] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0056] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A soft conductive structure, characterized in that, Including a soft conductive body; The soft conductive body is a column with multiple first grooves arrayed on the first surface and multiple second grooves arrayed on the second surface, with the first grooves and the second grooves spaced apart. The first face and the second face are opposite each other.

2. The soft conductive structure according to claim 1, characterized in that, The first groove includes a first longitudinal sub-groove and a first transverse sub-groove; The second groove includes a second longitudinal sub-groove and a second transverse sub-groove; The soft conductive body has a plurality of first longitudinal sub-grooves arranged in a horizontal linear array on its upper bottom surface and a plurality of second longitudinal sub-grooves arranged in a horizontal linear array on its lower bottom surface, with the first longitudinal sub-grooves and the second longitudinal sub-grooves spaced apart. The soft conductive body has a plurality of first transverse sub-grooves arranged in a longitudinal straight line array on the upper bottom surface and a plurality of second transverse sub-grooves arranged in a longitudinal straight line array on the lower bottom surface, with the first transverse sub-grooves and the second transverse sub-grooves spaced apart.

3. The soft conductive structure according to claim 2, characterized in that, The first central plane of the first longitudinal sub-groove forms a first acute angle with the longitudinal section passing through the center of the soft conductive body; The second central plane of the second longitudinal sub-groove forms a second acute angle with the longitudinal section passing through the center of the soft conductive body; And / or, the third center plane of the first transverse sub-groove forms a third acute angle with the transverse cross section passing through the center of the soft conductive body; The fourth central plane of the second transverse sub-groove forms a fourth acute angle with the transverse cross section passing through the center of the soft conductive body.

4. The soft conductive structure according to claim 1, characterized in that, The first groove includes a first radial sub-groove, and the second groove includes a second radial sub-groove; A first axial through hole is provided in the middle of the column, and the radial cross section of the first axial through hole is similar to the outer contour of the radial cross section of the column. Multiple axially extending first radial sub-grooves are arranged in a ring array around their own central axis on the inner wall of the first axial through hole. The outer wall of the soft conductive body is provided with a plurality of axially extending second radial sub-grooves arranged in a ring array around its own central axis. The first radial sub-groove and the second radial sub-groove are spaced apart.

5. The soft conductive structure according to claim 4, characterized in that, The first groove further includes a first circumferential sub-groove, and the second groove further includes a second circumferential sub-groove; Multiple first circumferential sub-grooves are arranged in a linear array along the axial direction on the surface of the first axial through hole. Multiple second circumferential sub-grooves are arranged in a linear array along the axial direction on the outer wall of the soft conductive body. The first circumferential sub-groove and the second circumferential sub-groove are spaced apart.

6. The soft conductive structure according to claim 4 or 5, characterized in that, The soft conductive body includes multiple fan-ring blocks, and the multiple fan-ring blocks are combined to form the column.

7. The soft conductive structure according to claim 4 or 5, characterized in that, The radial cross-section of the soft conductive body gradually increases in area from the upper surface to the lower surface.

8. A connecting device for a high-load electrical connector, characterized in that, The flexible conductive structure according to any one of claims 1 to 7 further includes a first terminal and a second terminal; the end faces of the first terminal and the second terminal are opposite to each other and are respectively attached to the first surface and / or the second surface of the flexible conductive structure.

9. The connecting device for high-load electrical connectors according to claim 8, characterized in that, It also includes positioning posts, and the first terminal, the second terminal and the soft conductive structure are all provided with second axial through holes; The first terminal and the second terminal are respectively attached to the first and second surfaces of the flexible conductive structure; The first terminal block, the second terminal block, and the flexible conductive structure are sleeved on the positioning post through the second axial through hole.

10. The connecting device for high-load electrical connectors according to claim 8, characterized in that, It also includes a fixed cylinder; The first terminal and the second terminal are respectively attached to the first and second surfaces of the flexible conductive structure; The fixing sleeve is fixed to the outer wall of the first terminal and the second terminal.

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