Elastic terminal, electrical connector and conductive connection assembly for circuit board

Abstract

The present invention relates to the technical field of connectors, and more particularly to an elastic terminal, an electrical connector, and a conductive connection assembly for circuit boards. The elastic terminal includes a tubular body having conductive contact portions at both ends for abutting against corresponding conductive terminals. The tubular body has a mesh-like cylindrical structure surrounded by a braided layer formed by regularly braiding conductive wires. The braided structure provides elastic deformation in the axial direction. The elastic terminal can elastically deform in the axial direction, achieving elastic contact with other conductive terminals, shortening the current transmission path, reducing the surrounding air, and enabling high-speed transmission. During production of the tubular body, the braided layer can be formed by regularly braiding conductive wires using a braiding device. The braided layer, which has a considerable length, can be cut and welded, enabling mass production of terminals at low cost, significantly improving production efficiency, and ensuring high product consistency and a high product pass rate, thereby reducing production costs.

Description

[Technical Field]

[0001] The present invention relates to the technical field of connectors, and more particularly to resilient terminals, electrical connectors and conductive connection assemblies for circuit boards. [Background technology]

[0002] Elastic terminals are commonly used conductive components in electrical connectors. Currently, common terminals capable of longitudinal elastic contact mainly include L-shaped or C-shaped cantilever terminals and cylindrical elastic terminals. L-shaped or C-shaped cantilever terminals generally include a body and a cantilever connected to the end of the body, with only the cantilever portion being elastically deformable. If the cantilever is too short, such terminals are prone to yielding under pressure. However, if the cantilever is too long, the transmission path becomes long, which cannot meet the low connector's high-speed performance requirements and cannot achieve high-density layout. Cylindrical elastic terminals include pogo pins and fuzz buttons. For example, the pogo pin connector disclosed in Chinese patent publication number CN111403941B can achieve a transmission speed of 112 Gbps. However, it itself is composed of at least four components, and the components are very small, making mass production difficult, resulting in high production costs. For example, the fuzz button connector disclosed in Chinese patent with registration publication number CN110190428B can achieve high-speed transmission, but the structure of the fuzz button itself is complex and there is no rule for winding the internal wire during production, so the winding process is complicated and the steps are cumbersome, the processing efficiency is low, the product consistency is low, the yield is low, and the production cost is high. Furthermore, if part of the wire breaks during use, the surrounding wire is simply randomly spliced, which is likely to cause unstable signal transmission. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to provide an elastic terminal to solve the problems of conventional cylindrical elastic terminals, such as a complex structure, low processing efficiency, and high processing costs. The present invention also aims to provide an electrical connector to solve the problems of conventional electrical connectors, such as a complex structure of the elastic terminal, low processing efficiency, and high processing costs, which increase the overall cost of the electrical connector. The present invention also aims to provide a conductive connection assembly for circuit boards to solve the problem of conventional conductive connection assemblies for circuit boards, such as high costs. [Means for solving the problem]

[0004] To achieve the above object, the elastic terminal of the present invention adopts the following technical solutions.

[0005] The elastic terminal includes a cylindrical body, and both ends of the cylindrical body have conductive contact portions for abutting against compatible conductive terminals. The cylindrical body has a mesh cylindrical structure surrounded by a braided layer formed by regularly braiding conductive wires, and the braided structure provides the terminal with the ability to elastically expand and contract in the axial direction.

[0006] Benefits: This invention proposes a novel elastic terminal, whose tubular body is a mesh tube structure surrounded by a braided layer formed by regularly braiding conductive wires. This allows the elastic terminal to elastically expand and contract in the axial direction, achieving elastic contact with other conductive terminals. This shortens the current transmission path, reduces the surrounding air medium, and enables high-speed transmission. During the production of the tubular body, the braided layer is formed by regularly braiding the conductive wires using a braiding device. The braided layer, which has a considerable length, can be cut and welded, enabling mass production of terminals at low cost, significantly improving production efficiency, and ensuring high product consistency and a high product pass rate, thereby reducing production costs.

[0007] Furthermore, the braided layers are two or more in number and are arranged in a radially stacked manner.

[0008] Beneficial effects: By installing in this manner, on the one hand, the cross-sectional area of ​​the tubular body can be increased, thereby increasing the carrier capacity and transmission speed of the terminal; on the other hand, the multiple braided layers are constrained to each other in the radial direction, which improves the axial elastic deformation ability of the tubular body, making the tubular body more stable when subjected to axial forces and less likely to be distorted.

[0009] Furthermore, adjacent braided layers are alternately stacked, and a radial convex portion formed in one braided layer corresponds to a radial concave portion formed in an adjacent braided layer.

[0010] Beneficial effects: This type of installation ensures that adjacent braided layers have large radial deformation gaps and sufficient deformation space when the tubular body is compressed, ensuring high axial elastic expansion and contraction deformation capacity. In addition, by closely bonding the inside and outside of adjacent braided layers, they are less likely to distort when subjected to pressure and better maintain axial stability. Furthermore, this installation allows the conductive wires to be arranged more densely, resulting in a higher shielding effect when the elastic terminal is used as a shield terminal.

[0011] Additionally, the outermost braided layers have more interlacing points than the inner braided layers.

[0012] Beneficial effects: The more interlacing points there are in the braided layer, the stronger the overall stability when subjected to axial load, but the shorter the elastic arms, the lower the overall elasticity shown. The outermost braided layer has more interlacing points than the inner braided layer, so the terminal has high elasticity while making the structure and dimensions of the terminal more stable.

[0013] Furthermore, two adjacent braided layers are wrapped around each other to form an interlayer interlock, or two spaced apart braided layers are wrapped around each other to form a multi-layer interlock.

[0014] Beneficial effects: It prevents layer misalignment and uneven mechanical properties of the terminal after cutting and welding, and the terminal can still maintain its structural and dimensional stability even in environments with strong vibration and large dynamic loads.

[0015] Furthermore, a mandrel is provided inside the cylindrical body, and the mandrel is a flexible conductor.

[0016] Beneficial effect: By installing a mandrel inside the cylindrical body, the carrier capacity can be further improved, and the mandrel is a flexible conductor, which can improve the carrier capacity and ensure the elastic deformation ability of the terminal in the axial direction.

[0017] Furthermore, the mandrel is a stranded wire made by twisting together two or more conductive wires.

[0018] Beneficial effects: A twisted wire made by twisting two or more conductive wires has stronger deformation ability, which not only meets the requirement of improving the carrier capacity of the terminal, but also does not reduce the axial deformation ability of the terminal.

[0019] Furthermore, end conductive members are fixedly connected to both ends of the mesh cylindrical structure, and the outer end surfaces of the end conductive members opposite the mesh cylindrical structure serve as the conductive contact portions.

[0020] Beneficial effects: By fixedly connecting the end conductive members to both ends of the mesh tubular structure and using the end conductive members to make conductive contact with other conductive terminals, on the one hand, it is possible to provide protection for both ends of the mesh tubular structure and avoid a reduction in the service life caused by the ends of the mesh tubular structure coming into direct contact with other conductive terminals and being frequently pressed and deformed, and on the other hand, it is possible to ensure that the elastic terminals are in reliable conductive contact with other conductive terminals.

[0021] Furthermore, the end conductive member is hemispherical, and both ends of the mesh cylindrical structure are fixedly connected to the end faces of the end conductive member that face the mesh cylindrical structure.

[0022] Beneficial effect: The end conductive member is hemispherical, and the spherical surface of the end conductive member is for abutting against other conductive terminals to conduct electricity, and the end surface of the end conductive member facing the mesh tubular structure is for fixedly connecting to the mesh tubular structure, which on the one hand simplifies the structure of the end conductive member and on the other hand is more helpful in ensuring reliable abutment between the end conductive member and the conductive terminal to be docked, and because the end conductive member is hemispherical, reliable contact can still be ensured even if the end conductive member is slightly misaligned with the conductive terminal to be docked.

[0023] Furthermore, the radial dimension of the end face of the end conductive member facing the mesh cylindrical structure is smaller than the radial dimension of the mesh cylindrical structure.

[0024] Beneficial effects: In practical applications, multiple elastic terminals are typically mounted in parallel on a single mounting base, and the multiple elastic terminals are simultaneously electrically connected to multiple conductive terminals on a circuit board. The radial dimension of the end face of the end conductive member facing the mesh tube structure is smaller than the radial dimension of the mesh tube structure, which ensures a large gap between the end conductive members of two adjacent elastic terminals, which is more helpful in ensuring the distribution density of the terminals and the reliability of electrical contact.

[0025] Alternatively, the outer end surface of the end conductive member on the side opposite to the mesh cylindrical structure is a spherical surface that protrudes in the opposite direction to the mesh cylindrical structure.

[0026] Beneficial effect: It is more effective in ensuring reliable contact between the end conductive member and the docking conductive terminal, and in particular, reliable contact between the end conductive member and the docking conductive terminal can still be ensured even if the end conductive member is slightly misaligned with the docking conductive terminal.

[0027] Furthermore, the conductive wires of the braided layer are divided into two sets, each set including two or more strands wound in parallel, both sets of conductive wires extending spirally along the axis of the tubular body, the spiral extension directions of the two sets of conductive wires intersecting each other, and the conductive wires are stacked alternately up and down in the extension direction to be braided into layers.

[0028] Beneficial effects: This braiding method can ensure that the structure of the formed braided layer is stable, that the conductive wires are in reliable contact with each other, and that the elastic terminals can transmit signals reliably and have a long service life.

[0029] The electrical connector of the present invention adopts the following technical solutions.

[0030] The electrical connector includes a mounting base having a mounting hole penetrating the mounting base, an elastic terminal attached to the mounting hole, and the elastic terminal including a cylindrical body having conductive contact portions at both ends for abutting against matching conductive terminals, the cylindrical body having a mesh cylindrical structure surrounded by a braided layer formed by regularly braiding conductive wires, and the braided structure provides elastic expansion and contraction deformation ability in the axial direction.

[0031] Benefits: The present invention proposes an improved electrical connector, in which the tubular body of the elastic terminal has a mesh tubular structure surrounded by a braided layer formed by regularly braiding conductive wires, allowing the elastic terminal to elastically expand and contract in the axial direction and achieve elastic contact with other conductive terminals, while also shortening the current transmission path, reducing the surrounding air medium, and enabling high-speed transmission. During the production of the tubular body, the braided layer can be formed by regularly braiding conductive wires using a device, and the braided layer, which has a considerable length, can be cut and welded, enabling mass production of terminals at low cost, significantly improving production efficiency, and ensuring high product consistency and a high product pass rate, thereby reducing production costs.

[0032] Furthermore, the braided layers are two or more in number and are arranged in a radially stacked manner.

[0033] Beneficial effects: By installing in this manner, on the one hand, the cross-sectional area of ​​the tubular body can be increased, thereby increasing the carrier capacity and transmission speed of the terminal; on the other hand, the multiple braided layers are constrained to each other in the radial direction, which improves the axial elastic deformation ability of the tubular body, making the tubular body more stable when subjected to axial forces and less likely to be distorted.

[0034] Furthermore, adjacent braided layers are alternately stacked, and a radial convex portion formed in one braided layer corresponds to a radial concave portion formed in an adjacent braided layer.

[0035] Beneficial effects: This type of installation ensures that adjacent braided layers have large radial deformation gaps and sufficient deformation space when the tubular body is compressed, ensuring high axial elastic expansion and contraction deformation capacity. In addition, by closely bonding the inside and outside of adjacent braided layers, they are less likely to distort when subjected to pressure and better maintain axial stability. Furthermore, this installation allows the conductive wires to be arranged more densely, resulting in a higher shielding effect when the elastic terminal is used as a shield terminal.

[0036] Additionally, the outermost braided layers have more interlacing points than the inner braided layers.

[0037] Beneficial effects: The more interlacing points there are in the braided layer, the stronger the overall stability when subjected to axial load, but the shorter the elastic arms, the lower the overall elasticity shown. The outermost braided layer has more interlacing points than the inner braided layer, so the terminal has high elasticity while making the structure and dimensions of the terminal more stable.

[0038] Furthermore, two adjacent braided layers are wrapped around each other to form an interlayer interlock, or two spaced apart braided layers are wrapped around each other to form a multi-layer interlock.

[0039] Beneficial effects: It prevents layer misalignment and uneven mechanical properties of the terminal after cutting and welding, and the terminal can still maintain its structural and dimensional stability even in environments with strong vibration and large dynamic loads.

[0040] Furthermore, a mandrel is provided inside the cylindrical body, and the mandrel is a flexible conductor.

[0041] Beneficial effect: By installing a mandrel inside the cylindrical body, the carrier capacity can be further improved, and the mandrel is a flexible conductor, which can improve the carrier capacity and ensure the elastic deformation ability of the terminal in the axial direction.

[0042] Furthermore, the mandrel is a stranded wire made by twisting together two or more conductive wires.

[0043] Beneficial effects: A twisted wire made by twisting two or more conductive wires has stronger deformation ability, which not only meets the requirement of improving the carrier capacity of the terminal, but also does not reduce the axial deformation ability of the terminal.

[0044] Furthermore, end conductive members are fixedly connected to both ends of the mesh cylindrical structure, and the outer end surfaces of the end conductive members opposite the mesh cylindrical structure serve as the conductive contact portions.

[0045] Beneficial effects: By fixedly connecting the end conductive members to both ends of the mesh tubular structure and using the end conductive members to make conductive contact with other conductive terminals, on the one hand, it is possible to provide protection for both ends of the mesh tubular structure and avoid a reduction in the service life caused by the ends of the mesh tubular structure coming into direct contact with other conductive terminals and being frequently pressed and deformed, and on the other hand, it is possible to ensure that the elastic terminals are in reliable conductive contact with other conductive terminals.

[0046] Furthermore, the end conductive member is hemispherical, and both ends of the mesh cylindrical structure are fixedly connected to the end faces of the end conductive member that face the mesh cylindrical structure.

[0047] Beneficial effect: The end conductive member is hemispherical, and the spherical surface of the end conductive member is for abutting against other conductive terminals to conduct electricity, and the end surface of the end conductive member facing the mesh tubular structure is for fixedly connecting to the mesh tubular structure, which on the one hand simplifies the structure of the end conductive member and on the other hand is more helpful in ensuring reliable abutment between the end conductive member and the conductive terminal to be docked, and because the end conductive member is hemispherical, reliable contact can still be ensured even if the end conductive member is slightly misaligned with the conductive terminal to be docked.

[0048] Furthermore, the radial dimension of the end face of the end conductive member facing the mesh cylindrical structure is smaller than the radial dimension of the mesh cylindrical structure.

[0049] Beneficial effects: In practical applications, multiple elastic terminals are typically mounted in parallel on a single mounting base, and the multiple elastic terminals are simultaneously electrically connected to multiple conductive terminals on a circuit board. The radial dimension of the end face of the end conductive member facing the mesh tube structure is smaller than the radial dimension of the mesh tube structure, which ensures a large gap between the end conductive members of two adjacent elastic terminals, which is more helpful in ensuring the distribution density of the terminals and the reliability of electrical contact.

[0050] Alternatively, the outer end surface of the end conductive member on the side opposite to the mesh cylindrical structure is a spherical surface that protrudes in the opposite direction to the mesh cylindrical structure.

[0051] Beneficial effect: It is more effective in ensuring reliable contact between the end conductive member and the docking conductive terminal, and in particular, reliable contact between the end conductive member and the docking conductive terminal can still be ensured even if the end conductive member is slightly misaligned with the docking conductive terminal.

[0052] Furthermore, the conductive wires of the braided layer are divided into two sets, each set including two or more strands wound in parallel, both sets of conductive wires extending spirally along the axis of the tubular body, the spiral extension directions of the two sets of conductive wires intersecting each other, and the conductive wires are stacked alternately up and down in the extension direction to be braided into layers.

[0053] Beneficial effects: This braiding method can ensure that the structure of the formed braided layer is stable, that the conductive wires are in reliable contact with each other, and that the elastic terminals can transmit signals reliably and have a long service life.

[0054] Furthermore, an end of the elastic terminal is directly exposed from the mounting hole, or at least one end of the elastic terminal is provided with a conductive member that is in conductive contact with the elastic terminal and is exposed from the mounting hole.

[0055] Beneficial effect: Facilitates electrical contact by abutting the elastic terminal with another conductive terminal, particularly facilitating abutment between the elastic terminal and a flat conductive terminal.

[0056] Furthermore, the orifice at at least one end of the mounting hole has an inward tapering structure, and the conductive member is attached to the inward tapering orifice within the mounting hole, and the conductive member has an extending end extending from the inward tapering orifice and a retaining portion that engages with the inward tapering orifice as a stopper.

[0057] Beneficial effect: By installing in this manner, on the one hand, it is possible to prevent the elastic terminal from escaping from the mounting hole, and on the other hand, it is possible to limit the axial position of the elastic terminal within the mounting hole, thereby stabilizing and increasing the consistency of the length of both ends of the elastic terminal exposed from the mounting hole.

[0058] Alternatively, an inwardly protruding ring for fastening the elastic terminal is provided on the inner wall of the mounting hole.

[0059] Beneficial effect: By providing an inward-projecting ring on the inner wall of the mounting hole and fastening the elastic terminal in the mounting hole by the inward-projecting ring, the structure of the entire electrical connector is simplified and the number of parts is reduced.

[0060] The conductive connection assembly for circuit boards of the present invention adopts the following technical solutions.

[0061] The conductive connection assembly for a circuit board includes an electrical connector and a circuit board connected to the electrical connector, the electrical connector includes a mounting base, the mounting base has mounting holes penetrating the mounting base, elastic terminals are attached to the mounting holes, the elastic terminals include a tubular body, both ends of which have conductive contact portions for abutting against matching conductive terminals, the tubular body has a mesh tubular structure surrounded by a braided layer formed by regularly braiding conductive wires, the braided structure providing elastic expansion and contraction deformation ability in the axial direction, the circuit board is fixedly attached to the surface of the mounting base of the electrical connector, and the conductive contacts of the circuit board are in conductive contact with the elastic terminals.

[0062] Benefits: The present invention proposes an improved conductive connection assembly for circuit boards, mainly relating to an improvement in electrical connectors, in which the tubular body of the elastic terminal of the electrical connector has a mesh tubular structure surrounded by a braided layer formed by regularly braiding conductive wires, so that the elastic terminal can elastically expand and contract in the axial direction and achieve elastic contact with the conductive terminal, and the current transmission path is short and enables high-speed transmission. When producing the tubular body, the conductive wires can be regularly braided by equipment to form the braided layer, and the braided layer, which has a considerable length, can be cut and welded, thereby realizing mass production of terminals at low cost, significantly improving production efficiency, and also ensuring high product consistency and a high product pass rate, thereby reducing production costs and thereby reducing the production costs of the conductive connection assembly for circuit boards.

[0063] Furthermore, the braided layers are two or more in number and are arranged in a radially stacked manner.

[0064] Beneficial effects: By installing in this manner, on the one hand, the cross-sectional area of ​​the tubular body can be increased, thereby increasing the carrier capacity and transmission speed of the terminal; on the other hand, the multiple braided layers are constrained to each other in the radial direction, which improves the axial elastic deformation ability of the tubular body, making the tubular body more stable when subjected to axial forces and less likely to be distorted.

[0065] Furthermore, adjacent braided layers are alternately stacked, and a radial convex portion formed in one braided layer corresponds to a radial concave portion formed in an adjacent braided layer.

[0066] Beneficial effects: This type of installation ensures that adjacent braided layers have large radial deformation gaps and sufficient deformation space when the tubular body is compressed, ensuring high axial elastic expansion and contraction deformation capacity. In addition, by closely bonding the inside and outside of adjacent braided layers, they are less likely to distort when subjected to pressure and better maintain axial stability. Furthermore, this installation allows the conductive wires to be arranged more densely, resulting in a higher shielding effect when the elastic terminal is used as a shield terminal.

[0067] Additionally, the outermost braided layers have more interlacing points than the inner braided layers.

[0068] Beneficial effects: The more interlacing points there are in the braided layer, the stronger the overall stability when subjected to axial load, but the shorter the elastic arms, the lower the overall elasticity shown. The outermost braided layer has more interlacing points than the inner braided layer, so the terminal has high elasticity while making the structure and dimensions of the terminal more stable.

[0069] Furthermore, two adjacent braided layers are wrapped around each other to form an interlayer interlock, or two spaced apart braided layers are wrapped around each other to form a multi-layer interlock.

[0070] Beneficial effects: It prevents layer misalignment and uneven mechanical properties of the terminal after cutting and welding, and the terminal can still maintain its structural and dimensional stability even in environments with strong vibration and large dynamic loads.

[0071] Furthermore, a mandrel is provided inside the cylindrical body, and the mandrel is a flexible conductor.

[0072] Beneficial effect: By installing a mandrel inside the cylindrical body, the carrier capacity can be further improved, and the mandrel is a flexible conductor, which can improve the carrier capacity and ensure the elastic deformation ability of the terminal in the axial direction.

[0073] Furthermore, the mandrel is a stranded wire made by twisting together two or more conductive wires.

[0074] Beneficial effects: A twisted wire made by twisting two or more conductive wires has stronger deformation ability, which not only meets the requirement of improving the carrier capacity of the terminal, but also does not reduce the axial deformation ability of the terminal.

[0075] Furthermore, end conductive members are fixedly connected to both ends of the mesh cylindrical structure, and the outer end surfaces of the end conductive members opposite the mesh cylindrical structure serve as the conductive contact portions.

[0076] Beneficial effects: By fixedly connecting the end conductive members to both ends of the mesh tubular structure and using the end conductive members to make conductive contact with other conductive terminals, on the one hand, it is possible to provide protection for both ends of the mesh tubular structure and avoid a reduction in the service life caused by the ends of the mesh tubular structure coming into direct contact with other conductive terminals and being frequently pressed and deformed, and on the other hand, it is possible to ensure that the elastic terminals are in reliable conductive contact with other conductive terminals.

[0077] Furthermore, the end conductive member is hemispherical, and both ends of the mesh cylindrical structure are fixedly connected to the end faces of the end conductive member that face the mesh cylindrical structure.

[0078] Beneficial effect: The end conductive member is hemispherical, and the spherical surface of the end conductive member is for abutting against other conductive terminals to conduct electricity, and the end surface of the end conductive member facing the mesh tubular structure is for fixedly connecting to the mesh tubular structure, which on the one hand simplifies the structure of the end conductive member and on the other hand is more helpful in ensuring reliable abutment between the end conductive member and the conductive terminal to be docked, and because the end conductive member is hemispherical, reliable contact can still be ensured even if the end conductive member is slightly misaligned with the conductive terminal to be docked.

[0079] Furthermore, the radial dimension of the end face of the end conductive member facing the mesh cylindrical structure is smaller than the radial dimension of the mesh cylindrical structure.

[0080] Beneficial effects: In practical applications, multiple elastic terminals are typically mounted in parallel on a single mounting base, and the multiple elastic terminals are simultaneously electrically connected to multiple conductive terminals on a circuit board. The radial dimension of the end face of the end conductive member facing the mesh tube structure is smaller than the radial dimension of the mesh tube structure, which ensures a large gap between the end conductive members of two adjacent elastic terminals, which is more helpful in ensuring the distribution density of the terminals and the reliability of electrical contact.

[0081] Alternatively, the outer end surface of the end conductive member on the side opposite to the mesh cylindrical structure is a spherical surface that protrudes in the opposite direction to the mesh cylindrical structure.

[0082] Beneficial effect: It is more effective in ensuring reliable contact between the end conductive member and the docking conductive terminal, and in particular, reliable contact between the end conductive member and the docking conductive terminal can still be ensured even if the end conductive member is slightly misaligned with the docking conductive terminal.

[0083] Furthermore, the conductive wires of the braided layer are divided into two sets, each set including two or more strands wound in parallel, both sets of conductive wires extending spirally along the axis of the tubular body, the spiral extension directions of the two sets of conductive wires intersecting each other, and the conductive wires are stacked alternately up and down in the extension direction to be braided into layers.

[0084] Beneficial effects: This braiding method can ensure that the structure of the formed braided layer is stable, that the conductive wires are in reliable contact with each other, and that the elastic terminals can transmit signals reliably and have a long service life.

[0085] Furthermore, an end of the elastic terminal is directly exposed from the mounting hole, or at least one end of the elastic terminal is provided with a conductive member that is in conductive contact with the elastic terminal and is exposed from the mounting hole.

[0086] Beneficial effect: Facilitates electrical contact by abutting the elastic terminal with another conductive terminal, particularly facilitating abutment between the elastic terminal and a flat conductive terminal.

[0087] Furthermore, the orifice at at least one end of the mounting hole has an inward tapering structure, and the conductive member is attached to the inward tapering orifice within the mounting hole, and the conductive member has an extending end extending from the inward tapering orifice and a retaining portion that engages with the inward tapering orifice as a stopper.

[0088] Beneficial effect: By installing in this manner, on the one hand, it is possible to prevent the elastic terminal from escaping from the mounting hole, and on the other hand, it is possible to limit the axial position of the elastic terminal within the mounting hole, thereby stabilizing and increasing the consistency of the length of both ends of the elastic terminal exposed from the mounting hole.

[0089] Alternatively, an inwardly protruding ring for fastening the elastic terminal is provided on the inner wall of the mounting hole.

[0090] Beneficial effect: By providing an inward-projecting ring on the inner wall of the mounting hole and fastening the elastic terminal in the mounting hole by the inward-projecting ring, the structure of the entire electrical connector is simplified and the number of parts is reduced. [Brief explanation of the drawings]

[0091] [Figure 1] 1 is an overall schematic view of a first embodiment of an elastic terminal according to the present invention. [Figure 2] FIG. 2 is a schematic diagram of the cylindrical main body in FIG. [Figure 3]FIG. 2 is a schematic cross-sectional view of the cylindrical main body in FIG. [Figure 4] 1A and 1B are comparative schematic diagrams of braided layers formed using different interwoven structures. [Figure 5] FIG. 1 is a structural schematic diagram of a braid formed using a 1×1 interwoven structure. [Figure 6] FIG. 6 is a cross-sectional schematic view of the braided body shown in FIG. 5. [Figure 7] FIG. 1 is a structural schematic diagram of a braid formed using a 2×2 interwoven structure. [Figure 8] FIG. 8 is a cross-sectional schematic view of the braid shown in FIG. [Figure 9] FIG. 1 is a schematic diagram of the mechanical characteristics of a braid formed using a 1×1 interwoven structure. [Figure 10] FIG. 1 is a schematic diagram of the mechanical characteristics of a braid formed using a 2×2 interwoven structure. [Figure 11] FIG. 1 is a structural schematic diagram of a braided body having a single braided layer without a mandrel inside. [Figure 12] FIG. 12 is a cross-sectional view of the braid shown in FIG. [Figure 13] FIG. 1 is a structural schematic diagram of a braided body having two braided layers and no mandrel inside. [Figure 14] FIG. 14 is a cross-sectional schematic view of the braided body shown in FIG. [Figure 15] FIG. 1 is a structural schematic diagram of a braided body having three braided layers and no mandrel inside. [Figure 16] FIG. 16 is a cross-sectional view of the braid shown in FIG. [Figure 17] FIG. 2 is a schematic diagram of a braided body formed by fitting two braided layers together. [Figure 18] FIG. 1 is a schematic diagram of a braided body formed by fitting three braided layers together. [Figure 19] FIG. 1 is a structural schematic diagram of a three-dimensional braided body. [Figure 20] FIG. 20 is a schematic cross-sectional view of the three-dimensional braided body shown in FIG. [Figure 21] FIG. 1 is a diagram of the spatial trajectories of conductive wires in a three-dimensional braid. [Figure 22] FIG. 1 is a schematic diagram of the trajectory of the conductive wires of the three-dimensional braided body as they are wound around adjacent braided layers. [Figure 23] FIG. 10 is a schematic diagram of another view in which the conductive wires of the three-dimensional braid are interwound in adjacent braid layers. [Figure 24] FIG. 1 is a schematic cross-sectional view of a braided body having a mandrel therein and a single braided layer. [Figure 25] FIG. 1 is a schematic cross-sectional view of a braided body having a mandrel inside and two braided layers. [Figure 26] FIG. 2 is a structural schematic diagram of a mandrel. [Figure 27] FIG. 2 is a cross-sectional schematic view of a mandrel. [Figure 28] FIG. 10 is a schematic diagram showing end conductive members fixedly connected to both ends of a mesh cylindrical structure. [Figure 29] FIG. 10 is an overall schematic view of a second embodiment of an elastic terminal according to the present invention. [Figure 30] FIG. 30 is a side view of the elastic terminal shown in FIG. 29. [Figure 31] FIG. 30 is a schematic diagram of the braided layer in FIG. 29. [Figure 32] This is a schematic diagram showing one conductive wire constituting one strand and two strands of conductive wire wound in a crossed manner. [Figure 33] This is a schematic diagram showing a plurality of conductive wires forming one strand and two strands of conductive wires being wound in a crossed manner. [Figure 34] FIG. 1 is a schematic diagram of a cylindrical body having two braided layers in the radial direction. [Figure 35] FIG. 1 is a schematic diagram of a cylindrical body having one braided layer in the radial direction. [Figure 36] 1 is an overall schematic view of a first embodiment of an electrical connector according to the present invention. [Figure 37] FIG. 37 is a schematic diagram of the internal structure of the electrical connector shown in FIG. 36. [Figure 38] FIG. 10 is an overall schematic view of a second embodiment of an electrical connector according to the present invention. [Figure 39] FIG. 39 is a schematic diagram of the internal structure of the electrical connector shown in FIG. 38. [Figure 40] FIG. 10 is an overall schematic view of a third embodiment of an electrical connector according to the present invention. [Figure 41] FIG. 41 is a schematic diagram of the internal structure of the electrical connector shown in FIG. 40. [Figure 42] 1 is a schematic diagram of a first embodiment of a conductive connection assembly for a circuit board according to the present invention. [Figure 43] FIG. 2 is a schematic diagram of a conductive connection assembly for a circuit board according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0092] The tubular body of the elastic terminal of the present invention has a mesh tubular structure surrounded by a braided layer formed by regularly braiding conductive wires, which allows the elastic terminal to elastically expand and contract in the axial direction and achieve elastic contact with other conductive terminals. During production, the braiding can be achieved by equipment, thereby achieving efficient production, ensuring a high product pass rate, and reducing production costs.

[0093] The features and performance of the present invention will be described in more detail below in conjunction with examples.

[0094] Embodiment 1 of the elastic terminal according to the present invention: As shown in Figure 1, the elastic terminal includes a tubular body 2 having conductive contacts 4 at both ends for contacting a corresponding conductive terminal. The tubular body 2 has a mesh tube structure surrounded by a braided layer formed by regularly braiding multiple strands of conductive wire 3 at a certain angle and spacing. The braided structure provides elastic deformation in the axial direction. The conductive wires 3 forming the braided layer are close in length and out of phase with each other. The conductive wires 3 may be made of very thin beryllium bronze wire, phosphor bronze wire, oxygen-free copper wire, or other conductive materials. As shown in Figures 2 and 3, the conductive wires 3 form a certain angle, i.e., a braid angle θ, with a plane perpendicular to the axis of the tubular body 2. The braid angle θ is related to the diameter D and braid pitch P of the tubular body 2. The braid angle θ, diameter D of the tubular body 2, braid pitch P, and diameter d of the conductive wire 3 can be selected according to actual needs.

[0095] The tubular body 2 is a braided body surrounded by a braided layer formed by braiding conductive wires 3, and the braided body can have a variety of pattern structures. As shown in Figure 4, the braided layer is cut along cutting line a-a' and unfolded circumferentially to reveal the structural form of the braided layer. The interwoven structures of the conductive wires 3 include three types: 1x1, 2x2, and 3x3. When the number of conductive wires 3 is four or less, a 1x1 interwoven structure is adopted, and when the number of conductive wires 3 is more than four, a 2x2 or 3x3 interwoven structure is considered.

[0096] The three types of interwoven structures will be described in detail below with reference to the drawings.

[0097] 1x1 interwoven structure: As shown in Figure 4, within a typical framed pattern unit, one conductive wire in one direction is placed on top and another conductive wire in the opposite direction is placed on the bottom. An example will be described in which four conductive wires adopt a 1x1 interwoven structure. As can be seen from the figure, the diagonal conductive wire connecting the lower left corner and the upper right corner is defined as the base conductive wire, and the three conductive wires in the opposite spiral direction to the base conductive wire are defined as the first conductive wire, the second conductive wire, and the third conductive wire, from bottom to top. When interwoven with the first conductive wire, the base conductive wire protrudes from above the first conductive wire, and then when interwoven with the second conductive wire, it protrudes from below the second conductive wire, and when interwoven with the third conductive wire, it protrudes from above the third conductive wire.

[0098] 2x2 interwoven structure: In a typical pattern unit surrounded by a frame, two conductive wires in one direction are placed on top and two other conductive wires in the opposite direction are placed on the bottom, as shown in Figure 4. Take the example of eight conductive wires adopting a 2x2 interwoven structure. As can be seen from the figure, the diagonal conductor connecting the lower left corner and the upper right corner is defined as the base conductor, and the seven conductors wound in the opposite spiral direction to the base conductor are defined as the first, second, third, fourth, fifth, sixth, and seventh conductors, from bottom to top. The base conductor first protrudes from below the first conductor, then from above the second and third conductors, then from below the fourth and fifth conductors, and finally from above the sixth and seventh conductors. In other words, when the base conductor is wound around and interwoven with the conductors wound in the opposite direction, it reverses its direction every time it passes through two conductors wound in the opposite direction, completing one interwoven cycle and forming one interwoven point.

[0099] 3x3 interwoven structure: As shown in Figure 4, within a typical framed pattern unit, three conductive lines in one direction are placed on top and three conductive lines in the opposite direction are placed on the bottom. Take the example of 12 conductive lines adopting a 3x3 interwoven structure. As can be seen from the figure, the diagonal conductor connecting the lower left corner and the upper right corner is defined as the base conductor, and the 11 conductors wound in the opposite spiral direction to the base conductor are defined as the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh conductors, from bottom to top. The base conductor first protrudes from below the first, second, and third conductors, then protrudes from above the fourth, fifth, and sixth conductors, then protrudes from below the seventh, eighth, and ninth conductors, and finally protrudes from above the tenth and eleventh conductors. In other words, when the base conductor is wound around and interwoven with the conductors wound in the opposite direction, it reverses its direction every time it passes through three conductors wound in the opposite direction, completing one interweaving and forming one interweaving point.

[0100] The structural and mechanical characteristics of two interwoven structures, 1x1 and 2x2, are compared as shown in Figures 5 to 10. The 1x1 interwoven structure has more interwoven points, which provides greater overall stability when subjected to axial loads (an advantage), but its elastic arm L is short. As shown in Figure 9, the left-handed conductor 304 is interwoven with the first and second right-handed conductors in order, first protruding from above the first right-handed conductor 301 and then protruding from below the second right-handed conductor 302. This results in a somewhat large overall forward force and a somewhat weaker elastic deformation capacity (a disadvantage). The 2x2 interwoven structure has half as many interwoven points as the 1x1 interwoven structure, resulting in weaker overall stability when subjected to axial load (a disadvantage). However, its elastic arm L is longer, meaning one of the two conductors is in a loose state. As shown in Figure 10, the left-handed conductor 304 is interwoven with the first, second, and third right-handed conductors in order, first protruding from above the first right-handed conductor 301 and the second right-handed conductor 302, and then protruding from below the third right-handed conductor 303. Because the first right-handed conductor 301 is in a loose state when it moves under pressure, it exhibits a smaller overall forward force and stronger elastic deformation capability (an advantage). Similarly, the 3x3 interwoven structure exhibits stronger elastic deformation capability but lower stability than the previous two structures.

[0101] The braided layer of the tubular body 2 may be a single layer, as shown in Figures 11 and 12, or two or more layers, as shown in Figures 13 to 16. More than one braided layer may be used to increase the diameter of the terminal, particularly when the pin hole spacing is large, the carrier capacity requirements are stronger, and the transmission speed requirements are higher. The innermost braided layer is defined as the first layer 201, followed by the second layer 202 and the third layer 203, in that order from inside to outside. The multiple braided layers are radially stacked and constrained to each other, thereby improving the axial elastic deformation capacity of the tubular body 2. Radial protrusions 10 are formed at the positions where the two strands of conductive wire 3 intertwine, and radial recesses 11 are formed at the positions where they do not intertwine. The area surrounded by four radial protrusions 10 constitutes one radial recess 11. Adjacent braided layers are stacked alternately, with the radial convex portion 10 formed in one braided layer corresponding to the radial concave portion 11 formed in the adjacent braided layer. This arrangement ensures that adjacent braided layers have a large radial deformation gap, and further ensures that there is sufficient deformation space when the tubular body 2 is pressed, ensuring high axial elastic expansion and contraction deformation capacity. Furthermore, by closely bonding the inside and outside of adjacent braided layers, axial stability can be better maintained without distortion when pressure is applied. Furthermore, this arrangement allows the conductive wires to be arranged more densely, which improves the shielding effect when the elastic terminal is used as a shield terminal.

[0102] To stabilize the structure and dimensions of the tubular body after multiple compressions and rebounds, when there are two or more braided layers, the outermost braided layer can have a 1x1 interwoven structure, while the inner braided layer can have a 2x2 or 3x3 interwoven structure, as shown in Figures 17 and 18. The inner braided layer has a 2x2 or 3x3 interwoven structure, allowing the tubular body 2 to maintain high elasticity, while the outermost braided layer has a 1x1 interwoven structure, making up for the lack of elasticity due to the large nominal diameter, while stabilizing the structure and dimensions of the terminal.

[0103] Elastic terminals produced by directly fitting and laminating braided layers generally have a maximum of three layers, as this braiding method is characterized by high molding efficiency. However, if the number of layers is too large, the device requires more braiding plates, the volume of the braiding device becomes very large, and since there is no interlock between the layers, problems arise such as layer misalignment and uneven mechanical properties of the terminal after cutting and welding.

[0104] In some applications, terminals must carry a significant current. For terminals with a diameter of 0.4 mm or greater and located in environments with strong vibrations and dynamic loads, elastic terminals produced by directly interlocking multiple braided layers cannot meet the application requirements. Therefore, a three-dimensional braid with interlocking layers is required. As shown in Figures 19-23, a three-dimensional braid is a fully integrated combination of two braided layers, each of which is interwoven with adjacent braided layers through a three-dimensional braiding process using two or three sets of conductors 3 oriented in different directions, thereby forming interlocking layers. When a three-dimensional braid has three or more braided layers, each of these layers can be interwoven with at least one adjacent braided layer through a three-dimensional braiding process using two or three sets of conductors 3 oriented in different directions, or between two spaced apart braided layers, thereby forming a multi-layer interlocking structure.

[0105] When the carrier capacity of an elastic terminal is not required to be high, the elastic terminal may adopt a mandrelless structure, as shown in Figures 11 to 16. However, in some application environments, the carrier capacity of an elastic terminal is required to be high. Common methods for improving the carrier capacity of a terminal include increasing the terminal diameter and increasing the terminal's fill factor. A typical method for improving the fill factor of a terminal is to install a mandrel 12 inside the terminal, as shown in Figures 24 and 25. However, when a solid copper rod conductor is compressed, the forward force of the terminal increases, making it unsuitable for use. Therefore, the mandrel 12 must be replaced with a flexible conductor. As shown in Figures 26 and 27, the mandrel 12 is a twisted wire formed by twisting together three thin-diameter conductive wires 3. Compared to a single conductive wire of the same diameter, the mandrel 12 has greater deformation capacity and can contribute to conductivity. It not only meets the requirements for improved carrier capacity, but also improves the forward force. In another embodiment, the mandrel 12 is further formed by twisting two or more conductive wires 3 in a certain arrangement and twist pitch.

[0106] Both ends of the cylindrical body 2 have conductive contacts 4 for contacting corresponding conductive terminals. The conductive contacts 4 can be formed in two different forms. One is to directly process the end of the mesh cylindrical structure to form a smooth arc with a certain radius of curvature as shown in Figure 1, and the processing method can be laser welding, ultrasonic welding, copper bonding, soldering, etc.

[0107] Another method is to add conductive members. As shown in FIG. 28, conductive end members 5 are assembled on both ends of the mesh tube structure. The structure of the conductive end members 5 resembles a fixed cap, and assembly methods can include adhesive bonding, solder welding, and press assembly. The outer end surface of the conductive end member 5 facing away from the mesh tube structure is a spherical surface that protrudes outward, forming a conductive contact portion 4 for contacting a matching conductive terminal. The conductive end member 5 can be formed by pressure molding, roll pressing, machining, or other methods. The spherical surface of the conductive contact portion 4 of the conductive end member 5 helps ensure reliable contact between the conductive end member 5 and the corresponding conductive terminal, and even if the conductive end member 5 is slightly misaligned with the corresponding conductive terminal, reliable contact between the two can still be ensured. Of course, in other embodiments, the conductive end members can have other shapes, such as hemispherical shapes, where the spherical surface of the hemispherical conductive end member serves as a conductive contact portion, and the conductive end member can also be cylindrical, rectangular, or other shapes.

[0108] The elastic terminal of the present invention has a cylindrical mesh structure surrounded by a braided layer of multiple conductive wires braided at a fixed angle and spacing. This allows the elastic terminal to elastically expand and contract in the axial direction, achieving elastic contact with other conductive terminals. It also has a short current transmission path and minimal air space, making it suitable for a wide range of applications, including high transmission speeds, high node density, and low spatial height. During manufacturing, the regular braiding of the braided layer can be achieved using a braiding machine, which can produce a substantial length of braided layer in a single run. This subsequent cutting and welding of the substantial length of braided layer enables mass production of terminals at low cost, significantly improving production efficiency and enabling efficient, large-scale production. This also ensures high product consistency and a high product pass rate, thereby reducing production costs. The elastic terminal of the present invention may be used as a signal, power, or shield ground terminal.

[0109] Embodiment 2 of the elastic terminal according to the present invention: As shown in Figures 29 and 30, the elastic terminal includes a tubular body 2, which is a mesh tubular structure surrounded by a braided layer in which multiple strands of conductive wire 3 are braided at a certain angle and with a certain gap, and end conductive members 5 are fixedly connected to both ends of the mesh tubular structure, and the mesh tubular structure is electrically connected to the end conductive members 5. The conductors 3 have a certain degree of elasticity and strength. As shown in FIG. 31 , the conductors 3 of each strand extend spirally along the axis of the cylindrical body 2. The conductors are divided into left-handed and right-handed conductors according to the difference in the spiral direction. All left-handed conductors are grouped together, and all right-handed conductors are grouped together. The spiral directions of the left-handed and right-handed conductors cross each other. The crossing conductors 3 are stacked alternately one above the other, with the same conductor 3 being on the upper layer at the previous intersection and necessarily on the lower layer at the next intersection. A radial protrusion 10 is formed at the position where two strands of conductors 3 cross, and a radial recess 11 is formed at the position where they do not cross. The area surrounded by four radial protrusions 10 forms one radial recess 11.

[0110] When coiling the cylindrical body 2, each strand may include only one conductive wire 3 as shown in Figure 32, or may include two or more conductive wires 3 as shown in Figure 33, with each conductive wire 3 wound in parallel. Furthermore, the number of conductive wires 3 included per strand may be the same or different.

[0111] The braided layer may be a single layer, as shown in FIG. 35, or two or more layers, as shown in FIG. 34. The multiple braided layers are radially stacked. The more braided layers there are, the larger the cross-sectional area of ​​the tubular body 2 and the stronger the current-carrying capacity. Furthermore, the multiple braided layers are radially constrained to each other, improving the axial elastic deformation capacity of the tubular body 2. When two or more braided layers are provided, adjacent braided layers are alternately stacked, with the radial convex portion 10 formed in one braided layer corresponding to the radial concave portion 11 formed in the adjacent braided layer. This arrangement ensures that adjacent braided layers have a large radial deformation gap, further ensuring sufficient deformation space when the tubular body 2 is compressed, ensuring high axial elastic deformation capacity. Furthermore, the tight bonding between the inside and outside of adjacent braided layers prevents distortion under pressure and improves axial stability. This arrangement also allows the conductive wires 3 to be arranged more densely, improving the shielding effect when the elastic terminal is used as a shield terminal.

[0112] The conductive end members 5 are fixedly connected to both ends of the tubular mesh structure. In this embodiment, the conductive end members 5 are hemispherical, with the spherical surfaces of the conductive end members 5 facing away from the tubular mesh structure. The ends of the tubular mesh structure are raised toward the center to form connecting ends. These connecting ends are fixedly connected to the end faces of the conductive end members 5 facing the tubular mesh structure. This can be achieved by laser welding, ultrasonic welding, solder welding, conductive gel bonding, or crimping. The radial dimension of the end faces of the conductive end members 5 facing the tubular mesh structure is smaller than the radial dimension of the tubular mesh structure. This ensures a large gap between the conductive end members 5 of adjacent terminals when multiple elastic terminals are mounted in parallel on a single mounting base 1, thereby ensuring terminal density and electrical contact reliability. In use, the spherical surfaces of the conductive end members 5 serve as conductive contacts 4, making conductive contact with other conductive terminals.

[0113] The single braided layer may also employ other braiding methods different from those described above, such as a single-strand conductor 3 having a wavy shape, two adjacent strands of conductor 3 passing through nearby peaks and troughs and then popping out once to cross, the peaks and troughs of each strand of conductor 3 all crossing the conductor 3 of the adjacent strand, each conductor 3 extending along the axial direction of the tubular body 2, and multiple strands of conductor 3 interwoven in parallel and connected to each other to form a circle around the entire tubular body. Of course, other braiding methods may also be employed for the braided layer, as long as the conductors 3 are braided with a certain regularity and spacing, and any braiding method can be implemented by a machine, thereby improving production efficiency and reducing processing difficulty and costs.

[0114] Hereinafter, several electrical connectors using the elastic terminals of the present invention will be specifically described with reference to the drawings.

[0115] First embodiment of the electrical connector according to the present invention: As shown in Figure 36, the electrical connector includes a mounting base 1, which is a rectangular plate of a certain thickness, with four rows of mounting holes 101, each row having four mounting holes 101. The mounting holes 101 extend vertically through the mounting base 1, and each mounting hole 101 is fitted with an elastic terminal. An inwardly projecting ring 103 is provided at the center of the inner wall of the mounting hole 101, and as shown in Figure 37, the inwardly projecting ring 103 tightens the tubular body 2 of the elastic terminal, thereby fixing the elastic terminal within the mounting hole 101, with both ends of the elastic terminal exposed by a certain length from the mounting base 1.

[0116] The specific structure of the elastic terminal has already been described in the above embodiment of the elastic terminal according to the present invention, and will not be described again here.

[0117] Second embodiment of the electrical connector according to the present invention: As shown in Figures 38 and 39, the electrical connector includes a mounting base 1, which is a rectangular plate having a certain thickness, and which has four rows of mounting holes 101, each row having four mounting holes 101. The mounting holes 101 extend vertically through the mounting base 1, and each mounting hole 101 has an elastic terminal and a flange head conductor 6 attached thereto. The flange head conductor 6 is a conductive member that abuts against the conductive contact portion 4 at the lower end of the elastic terminal and is exposed downward from the mounting hole 101. The orifice at the bottom of the mounting hole 101 has an inward-diameter tapered structure, forming a limiting step 102 within the mounting hole 101. The flange head conductor 6 is mounted in the inward-diameter tapered orifice. The cuff structure of the flange head conductor 6 forms a retaining portion, forming an axial stopper engagement with the limiting step 102 to prevent the elastic terminal from slipping out of the orifice at the bottom of the mounting hole 101. It also limits the axial position of one end of the elastic terminal, stabilizing the length of the end of the elastic terminal exposed from the mounting hole 101 and increasing consistency. Furthermore, the end area of ​​the flange head conductor 6 can be adjusted to change the conductive contact area with other conductive terminals. During assembly, the elastic terminal and the flange head conductor 6 can be bonded with a conductive gel and then installed in the mounting hole 101. After the flange head conductor 6 is placed in the mounting hole 101, the elastic terminal can be installed in the mounting hole 101 with the lower end of the elastic terminal abutting against the flange head conductor 6. After assembly is completed, the upper end of the elastic terminal is directly exposed from the mounting hole 101, and the lower flange head conductor 6 is exposed downward from the mounting hole 101 and is used to make electrical contact with other conductive terminals.

[0118] The specific structure of the elastic terminal has already been described in the above embodiment of the elastic terminal according to the present invention, and will not be described again here.

[0119] Third embodiment of the electrical connector according to the present invention: As shown in Figures 40-41, the electrical connector includes a mounting base 1, which includes an upper plate and a lower plate that are installed separately. The upper and lower plates have the same structure and are arranged symmetrically from top to bottom. Both the upper and lower plates are rectangular plates with a certain thickness, and the rectangular plates are provided with four rows of through holes, each row having four through holes. The through holes extend vertically through the rectangular plates. After the upper and lower plates are assembled, the through holes on the two rectangular plates are connected in a one-to-one correspondence. The two corresponding and connected through holes on the top and bottom jointly form a complete mounting hole 101, in which an elastic terminal and two flange head conductors 6 are mounted. The two flange head conductors 6 act as two conductive members and respectively abut the conductive contact portions 4 at the upper and lower ends of the elastic terminal. The entire elastic terminal is accommodated inside the mounting hole 101, and the two flange head conductors 6 are exposed from the mounting hole 101 facing upward and downward, respectively. The orifices at the upper and lower ends of the mounting hole 101 both have an inward-diameter tapering structure, forming two limiting steps 102 within the mounting hole 101. The two flanged head conductors 6 are respectively attached to the two inward-diameter tapering orifices. The cuff structures of the two flanged head conductors 6 form retaining sections that engage with the corresponding limiting steps 102 in the axial direction, preventing the elastic terminals from slipping out of the mounting hole 101. This also limits the axial position of the elastic terminals at both ends, stabilizing the length of the two flanged head conductors 6 exposed from the mounting hole 101 and increasing consistency. Furthermore, the end area of ​​the flanged head conductors 6 can be adjusted to change the conductive contact area with other conductive terminals. During assembly, the elastic terminals and the two flanged head conductors 6 can be bonded with a conductive gel and then installed in the mounting hole 101. After the flanged head conductors 6 are placed in the mounting hole 101, the elastic terminals can be installed in the mounting hole 101 with their ends abutting against the two flanged head conductors 6. After the assembly is completed, the two flange head conductors 6 at both ends are exposed from the mounting holes 101 facing upward and downward, respectively, and are used to make electrical contact with other conductive terminals.

[0120] By adding flange head conductors 6 to both ends of the elastic terminal and abutting both ends of the elastic terminal against the flange head conductors 6 at the corresponding ends, electrical communication is achieved and electrical connection is made with other conductive terminals via the flange head conductors 6 at both ends, so that the height of the connector is no longer limited by the length of the terminals, and the connector can have a large height even if the terminals are short.

[0121] The specific structure of the elastic terminal has already been described in the above embodiment of the elastic terminal according to the present invention, and will not be described again here.

[0122] Example 1 of a conductive connection assembly for a circuit board according to the present invention: As shown in FIG. 42 , the conductive connection assembly for circuit boards includes an electrical connector 9, upper and lower circuit boards, and upper and lower load backing plates. The upper load backing plate 13 is located above the upper circuit board 14, and the lower load backing plate 16 is located below the lower circuit board 15. The electrical connector 9 is disposed between the upper and lower circuit boards, and the upper load backing plate 13, upper circuit board 14, electrical connector 9, lower circuit board 15, and lower load backing plate 16 are fixedly connected via bolts 8. The electrical connector 9 includes a mounting base 1 and elastic terminals mounted within the mounting base 1. The conductive contacts on the upper and lower circuit boards are in conductive contact with the elastic terminals, thereby realizing current transmission between the circuit boards. The specific structure of the electrical connector 9 has already been described in each embodiment of the electrical connector 9 above, and will not be described here.

[0123] Example 2 of the conductive connection assembly for circuit boards according to the present invention: 43, the conductive connection assembly for circuit boards includes an electrical connector 9, and an upper circuit board 14 and a lower circuit board 15 connected to the electrical connector 9, the electrical connector 9 being disposed between the upper and lower circuit boards, which are fixed to the surface of a mounting base 1 of the electrical connector 9 and fixedly connected via bolts 8, thereby realizing current transmission between the circuit boards. The specific structure of the electrical connector 9 has already been described in each of the above embodiments of the electrical connector 9, and will not be described here.

[0124] Of course, depending on the specific application, it is also possible to connect only one side of the electrical connector to a circuit board and not to connect the other side to a circuit board, so that one end of the elastic terminal is in conductive contact with the circuit board and the other end is used to connect another compatible connector.

[0125] The above is merely a preferred embodiment of the present invention, and is not intended to limit the present invention. The patent protection scope of the present invention is defined by the claims, and any equivalent structural changes made using the contents of the specification and drawings of the present invention shall also be included in the protection scope of the present invention. [Explanation of symbols]

[0126] 1 Mounting base 101 Mounting hole 102 Restricted Steps 103 Inner protruding ring 2. Cylindrical body 201 1st layer 202 2nd layer 203 3rd layer 3 Conductive wire 301 First right-handed conductive wire 302 Second right-handed conductive wire 303 Third right-handed winding conductive wire 304 Left-handed conductive wire 4 Conductive contact 5 End conductive member 6 flange head conductor 8 volts 9 Electrical Connectors 10 Radial convex portion 11 Radial recess 12 mandrels 13 Upper load back plate 14 Upper circuit board 15 Lower circuit board 16 Lower load back plate

Claims

1. An elastic terminal comprising a tubular body (2), both ends of which have conductive contact portions (4) for abutting against a suitable conductive terminal, the tubular body (2) having a mesh tube structure surrounded by a braided layer formed by regularly braiding conductive wires (3), the braided structure providing elastic expansion and contraction deformation capability in the axial direction.

2. 2. The elastic terminal according to claim 1, wherein the braided layers are two or more in number and are stacked in the radial direction.

3. 3. The elastic terminal according to claim 2, wherein adjacent braided layers are alternately stacked, and a radial convex portion (10) formed in one braided layer corresponds to a radial concave portion (11) formed in an adjacent braided layer.

4. 3. The elastic terminal according to claim 2, wherein the outermost braided layer has more interlacing points than the inner braided layer.

5. 3. The elastic terminal according to claim 2, wherein two adjacent braided layers are wrapped around each other to form an interlayer interlock, or two spaced apart braided layers are wrapped around each other to form a multi-layer interlock.

6. The elastic terminal according to any one of claims 1 to 5, wherein a mandrel (12) is provided inside the cylindrical body (2), and the mandrel (12) is a flexible conductor.

7. 7. The elastic terminal according to claim 6, wherein the mandrel (12) is a stranded wire formed by twisting together two or more conductive wires (3).

8. An elastic terminal as described in any one of claims 1 to 5, characterized in that end conductive members (5) are fixedly connected to both ends of the mesh cylindrical structure, and the outer end surfaces of the end conductive members (5) opposite the mesh cylindrical structure become the conductive contact portions (4).

9. The elastic terminal according to claim 8, wherein the end conductive member (5) is hemispherical, and both ends of the mesh tubular structure are fixedly connected to the end faces of the end conductive member (5) facing the mesh tubular structure.

10. 10. The elastic terminal according to claim 9, wherein the radial dimension of the end surface of the end conductive member (5) facing the mesh cylindrical structure is smaller than the radial dimension of the mesh cylindrical structure.

11. 9. The elastic terminal according to claim 8, wherein the outer end surface of the end conductive member (5) opposite to the mesh cylindrical structure is a spherical surface protruding in the opposite direction to the mesh cylindrical structure.

12. 5. The elastic terminal according to claim 1, wherein the conductive wires (3) of the braided layer are divided into two sets, each set of conductive wires (3) including two or more strands and wound in parallel, the two sets of conductive wires (3) both extending spirally along the axis of the tubular body (2), the spiral extension directions of the two sets of conductive wires (3) cross each other, and the conductive wires (3) are alternately stacked up and down in the extension direction to be braided as layers.

13. An electrical connector comprising a mounting base (1), a mounting hole (101) penetrating the mounting base (1), and an elastic terminal mounted in the mounting hole (101), characterized in that the elastic terminal is an elastic terminal as defined in any one of claims 1 to 12.

14. 14. The electrical connector according to claim 13, wherein an end of the elastic terminal is directly exposed from the mounting hole (101), or at least one end of the elastic terminal is provided with a conductive member that is in conductive contact with the elastic terminal and is exposed from the mounting hole (101).

15. 15. The electrical connector of claim 14, wherein an orifice at at least one end of the mounting hole (101) has an inward tapering structure, the conductive member is attached to the inward tapering orifice within the mounting hole (101), and the conductive member has an extending end extending from the inward tapering orifice and a retaining portion that engages with the inward tapering orifice as a stopper.

16. 15. The electrical connector according to claim 13 or 14, wherein an inner wall of the mounting hole (101) is provided with an inwardly protruding ring (103) for fastening the elastic terminal.

17. 14. A conductive connection assembly for a circuit board, comprising an electrical connector (9) and a circuit board connected to the electrical connector (9), wherein the electrical connector (9) is the electrical connector described in claim 13, the circuit board is fixedly attached to a surface of a mounting base (1) of the electrical connector (9), and the conductive contacts of the circuit board are in conductive contact with the elastic terminals.

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