High-current-carrying connector and connector terminal

Abstract

The invention relates to the technical field of connectors, in particular to a high-current-carrying connector and a connector terminal, and the high-current-carrying connector comprises a male terminal and a connector terminal. The connector terminal comprises a base cylinder, a wire clamping part and a female shell, a conductive disc and a base disc are coaxially inserted in the base cylinder, an outer supporting pipe and an inner supporting pipe are vertically arranged on the end face of the side, facing the conductive disc, of the base disc, the wire clamping part is inserted in the base cylinder, is in conductive connection with a cable and comprises an outer spiral strip and an inner spiral strip, the outer spiral strip has elasticity, and the inner spiral strip has elasticity. The clamping sleeve is sleeved on the outer supporting tube and has a trend of clamping a wire core on the other terminal; the inner spiral strip has elasticity, is inserted into the inner supporting tube and has a trend of supporting a wire core on the other terminal; and the female shell is sleeved on the base cylinder and is in stop fit with the base cylinder. When the connector is used, the outer spiral strip and the inner spiral strip can clamp a wire core on the other terminal, so that the enough contact area between the terminals can be ensured, and the conductive performance of the connector can also be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a high current-carrying connector and a connector terminal. Background Art

[0002] A high current-carrying connector is a connector that can withstand high current transmission and is widely used in electric vehicles, industrial automation, data centers and other fields. Multiple factors need to be considered during the design of this connector to ensure its reliability and stability in high current environments.

[0003] From the perspective of materials and structural design, high current-carrying connectors usually use materials with excellent conductive properties, such as copper or silver-plated copper, to improve their conductivity and reduce contact resistance. In addition, the structural design of high current-carrying connectors is also crucial, and good heat dissipation performance and mechanical strength need to be ensured to cope with the heat and mechanical stress generated by high current.

[0004] In the related art, for example, Chinese patent CN219203694U discloses a high-current male and female connector. When using the high-current male and female connector, first, the cable cores on the two cables are fixed on the female end positioning seat and the male end positioning seat respectively, and then the female end fixing seat and the male end fixing base are respectively placed in the female end plug handle and the male end plug handle, and then the two handles are threadedly connected to complete the docking between the two cables.

[0005] Although the above-mentioned high-current male and female connectors can improve the convenience of cable connection to a certain extent, the small contact area between the male and female terminals leads to weak current carrying capacity, and they are prone to loosening after long-term use. In addition, when a large current passes through, heat accumulation between the male and female terminals is relatively serious, affecting the conductive performance of the connector. Summary of the invention

[0006] Based on this, it is necessary to provide a high current-carrying connector and connector terminal to address the problems of weak current-carrying capacity and poor conductivity of current connectors during use.

[0007] The above purpose is achieved through the following technical solutions: A connector terminal, comprising: A base cylinder, wherein a conductive disk and a base disk are coaxially inserted inside the base cylinder, the conductive disk is fixedly arranged and conductively connected to the cable; the base disk is located on a side away from the other terminal and can slide along the axial direction of the base cylinder, an outer support tube and an inner support tube are vertically arranged on the end surface of the base disk on a side facing the conductive disk, the wire core on the other terminal is inserted into the outer support tube when in use, the inner support tube is coaxially inserted inside the outer support tube, and is arranged as a split structure and has elasticity, and the inner support tube is configured to be able to open the wire core on the other terminal; A wire clamping part, the wire clamping part is inserted into the base tube, and is conductively connected to the cable, and is located on both sides of the conductive disk with the base disk; the wire clamping part includes an outer spiral strip and an inner spiral strip, the outer spiral strip is elastic, and is sleeved on the outer support tube, and has a tendency to clamp the wire core on the other terminal; the inner spiral strip is elastic, and is inserted into the inner support tube, and has a tendency to open the wire core on the other terminal; A female shell is sleeved on the base cylinder, and the female shell and the base cylinder are matched in a stop-fit ​​manner.

[0008] Furthermore, the outer spiral strip and the inner spiral strip have opposite directions of rotation.

[0009] Furthermore, the connector terminal further comprises a first rotating assembly, and the first rotating assembly is configured to provide a driving force for tightening the outer spiral strip.

[0010] Furthermore, the first rotating component includes an inner gear ring and a first outer gear ring, the first outer gear ring is rotatably arranged on the conductive disk and is located on the same side as the outer spiral strip, the first outer gear ring and the conductive disk are conductively connected, and one end of the outer spiral strip close to the base disk is fixedly arranged on the first outer gear ring; the inner gear ring is coaxially arranged with the base cylinder, meshed with the first outer gear ring, and can rotate unidirectionally to drive the outer spiral strip to tighten through the first outer gear ring.

[0011] Furthermore, the connector terminal also includes a second rotating assembly, and the second rotating assembly is configured to provide a driving force for supporting the inner spiral strip.

[0012] Furthermore, the second rotating assembly includes a second outer tooth ring, fixed teeth and a limiting tooth rod, the second outer tooth ring can be rotatably arranged on the conductive disk and is located on the same side as the inner spiral strip, and the inner spiral strip is fixedly arranged on the second outer tooth ring at one end close to the base disk; there are multiple fixed teeth, which are circumferentially arranged on the inner circumferential wall of the first outer tooth ring; the limiting tooth rod is configured to limit both the first outer tooth ring and the second outer tooth ring on the conductive disk, and simultaneously engage with the fixed teeth and the second outer tooth ring.

[0013] Furthermore, the bottom of the inner support tube is configured as a conical structure, and the small end faces the other terminal.

[0014] Furthermore, the base plate, the outer support tube and the inner support tube are all made of heat-conducting material.

[0015] Furthermore, there are multiple outer support tubes and multiple inner support tubes; the number of the wire clamping parts is equal to the number of the outer support tubes, and they are arranged in a one-to-one correspondence.

[0016] The present invention also provides a high current-carrying connector, which includes a male terminal and a connector terminal. The male terminal is threadedly sleeved on a female shell when in use, and the cable on the male terminal is stripped to expose the wire core when in use.

[0017] The beneficial effects of the present invention are: The present invention relates to a high-current connector and a connector terminal. The high-current connector comprises a male terminal and a connector terminal which can be plugged into each other. When in use, firstly, the end of a cable is stripped to expose the wire core and connected to the male terminal. Then, another cable is inserted into a base tube and conductively connected to a conductive disk. Then, the male terminal is driven to move in a direction close to the connector terminal, so that the wire core on the male terminal is inserted into an outer support tube and is supported by an inner support tube. Then, the base disk is driven to move in a direction away from the male terminal. The base disk synchronously drives the outer support tube to be pulled out from the outer spiral strip and the inner support tube to be pulled out from the inner spiral strip. Under the action of elasticity, the outer spiral strip is spirally clamped on the outside of the wire core and the inner spiral strip is spirally supported on the inside of the wire core, so that the wire core can be spirally clamped. Then, the female shell is threadedly inserted into the male terminal to realize the plug-in connection between the male terminal and the connector terminal. By simultaneously screw-clamping the wire core inside and outside, sufficient contact area is ensured between the male terminal and the conductive part of the connector terminal, and the wire core is spread out, so that the contact area between the wire core and the air is larger, thereby improving the heat dissipation efficiency of the wire core and ensuring the conductive performance of the connector.

[0018] Furthermore, by setting the rotation directions of the outer spiral strips and the inner spiral strips to be opposite, the wire cores of the inner and outer layers can be staggered along the circumferential direction when in use, which improves the air circulation efficiency and makes the wire cores more difficult to be pulled, thereby further improving the heat dissipation efficiency of the wire cores and improving the anti-interference ability of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a high current-carrying connector provided by an embodiment of the present invention when connected to a cable; Figure 2 Schematic diagram of the parts breakdown when the high current carrying connector provided by one embodiment of the present invention is connected to the cable Figure 1 ; Figure 3 Schematic diagram of the parts breakdown when the high current carrying connector provided by one embodiment of the present invention is connected to the cable Figure 2 ; Figure 4 A schematic cross-sectional view of a high current-carrying connector provided by an embodiment of the present invention when connected to a cable; Figure 5 A schematic diagram of the three-dimensional structure of the base cylinder, base plate, wire clamping part, first rotating assembly and second rotating assembly of the high current-carrying connector provided by one embodiment of the present invention when assembled; Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a base cylinder, a base plate, a wire clamping portion, a first rotating assembly and a second rotating assembly of a high current-carrying connector provided by an embodiment of the present invention when assembled; Figure 7 for Figure 6 A schematic diagram of the partially enlarged structure at center A; Figure 8 A schematic diagram of the three-dimensional structure of a base plate, a wire clamping portion, a first rotating assembly and a second rotating assembly of a high current-carrying connector provided by an embodiment of the present invention when assembled; Fig. 9 A schematic diagram of the three-dimensional structure of a base plate of a high current-carrying connector provided by an embodiment of the present invention; Fig.10 A schematic diagram of the three-dimensional structure of a wire clamping part, a first rotating assembly and a second rotating assembly of a high current-carrying connector provided by an embodiment of the present invention when assembled; Fig.11 A schematic diagram of the three-dimensional structure of an outer spiral strip and a first outer gear ring of a high current-carrying connector provided by an embodiment of the present invention when assembled; Fig.12 A schematic diagram of the three-dimensional structure of the inner spiral strip and the second outer gear ring of the high current-carrying connector provided by one embodiment of the present invention when assembled; Fig.13 A schematic diagram of the three-dimensional structure of a male terminal of a high current-carrying connector and a cable when assembled according to an embodiment of the present invention; Fig.14 A schematic diagram of a top view of the structure of a base tube of a high current-carrying connector provided by an embodiment of the present invention; Fig.15 A schematic three-dimensional cross-sectional structure diagram of a base tube of a high current-carrying connector provided by an embodiment of the present invention.

[0020] in: 1. Male terminal; 11. Positioning ring; 2. Connector terminal; 21. Base cylinder; 211. Outer ring platform; 212. First slide groove; 213. Second slide groove; 22. Conductive plate; 221. First arc hole; 222. Second arc hole; 223. Mounting hole; 224. First heat dissipation hole; 225. Second heat dissipation hole; 226. Placement area; 23. Mother shell; 231. Inner ring platform; 3. base plate; 301. third heat dissipation hole; 31. outer support tube; 32. inner support tube; 33. shift block; 4. Wire clamping part; 41. External spiral strip; 42. Internal spiral strip; 5. first rotating assembly; 51. inner gear ring; 511. rotating block; 52. first outer gear ring; 6. Second rotating assembly; 61. Second outer gear ring; 62. Position limiting gear rod; 7. Cable; 71. Wire core. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] like Figures 1 to 15As shown, a high current-carrying connector provided by one embodiment of the present invention is used to connect a cable 7, and is configured to include a connector terminal 2 and a male terminal 1, wherein the connecting terminal is configured to include a base tube 21, a wire clamping portion 4 and a female shell 23, a conductive disk 22 and a base disk 3 are coaxially inserted inside the base tube 21, the conductive disk 22 is fixedly arranged, and is conductively connected to the cable 7; the base disk 3 is located on a side away from the other terminal, and can slide along the axial direction of the base tube 21, an outer support tube 31 and an inner support tube 32 are vertically arranged on the end surface of the base disk 3 on the side facing the conductive disk 22, the wire core 71 on the other terminal is inserted in the outer support tube 31 when in use, and the inner support tube 32 is coaxially inserted in the outer support tube 31 Inside, it is arranged as a split structure and has elasticity. The inner support tube 32 is configured to be able to open the wire core 71 on the other terminal; the wire clamping part 4 is inserted in the base tube 21, and is conductively connected to the cable 7, and is located on both sides of the conductive disk 22 with the base disk 3; the wire clamping part 4 is arranged to include an outer spiral strip 41 and an inner spiral strip 42, the outer spiral strip 41 has elasticity, and is sleeved on the outer support tube 31, and has a tendency to clamp the wire core 71 on the other terminal; the inner spiral strip 42 has elasticity, and is inserted in the inner support tube 32, and has a tendency to open the wire core 71 on the other terminal; the female shell 23 is sleeved on the base tube 21, and the cooperation mode between the female shell 23 and the base tube 21 is a stop cooperation.

[0025] The male terminal 1 is configured to be threadedly sleeved on the female housing 23 when in use, and the cable 7 on the male terminal 1 is stripped to expose the wire core 71 when in use.

[0026] Specifically in this embodiment, Figure 6 As shown, the base tube 21 is configured as a cylindrical structure with both ends open, and the conductive disk 22 is configured as a disk structure and is disposed near the middle of the base tube 21 during installation; Fig. 9 As shown, the base plate 3 is configured as a disk-shaped structure, and is located on the left side of the conductive plate 22 during installation. The outer support tube 31 and the inner support tube 32 are both configured as tubular structures, and are both fixedly connected to the right end surface of the base plate 3; the outer support tube 31 is configured as a split structure, and is composed of three first arc-shaped plates arranged at equal intervals; the inner support tube 32 is configured as a split structure, and is composed of three second arc-shaped plates arranged at equal intervals, and in order to prevent the wire core 71 from penetrating into the inner support tube 32, the bottoms of the three second arc-shaped plates together form a closed petal-shaped structure; as shown Figure 4 As shown, the female shell 23 is configured as a cylindrical structure with both ends open, and an external thread is provided on the bottom outer wall of the female shell 23. The male terminal 1 is configured as a cylindrical structure with both ends open, and an internal thread is provided on the top inner wall of the male terminal 1. When in use, the male terminal 1 is configured to be sleeved on the female shell 23 through the matching thread between the internal thread and the external thread.

[0027] In order to facilitate the outer support tube 31 to be located on the same side as the outer spiral strip 41, and the inner support tube 32 to be located on the same side as the inner spiral strip 42, as shown in FIG. Fig.14As shown, three first arc holes 221 are opened on the disk surface of the conductive disk 22 at equal intervals along the circumferential direction, and the first arc plates are arranged to pass through the first arc holes 221 in a one-to-one correspondence during installation; three second arc holes 222 are opened on the disk surface of the conductive disk 22 at equal intervals along the circumferential direction, and the center of the circle formed by the three second arc holes 222 coincides with the center of the circle formed by the three first arc holes 221, and the second arc plates are arranged to pass through the second arc holes 222 in a one-to-one correspondence during installation.

[0028] In order to facilitate the control of the sliding direction of the base plate 3 inside the base cylinder 21, as shown in FIG. Figure 5 As shown, a first slide groove 212 is provided through the upper circumferential side wall of the base tube 21. The first slide groove 212 is provided in a strip-shaped structure and is provided parallel to the axis of the base tube 21. Fig. 9 As shown, a T-shaped shifting block 33 is provided on the outer peripheral wall of the base plate 3 , and the base plate 3 is configured such that the shifting block 33 is slidably inserted into the first sliding groove 212 during installation.

[0029] In order to facilitate the stopper cooperation between the female shell 23 and the base tube 21, as shown in FIG. Figure 4 As shown, an inner ring stage 231 is coaxially and fixedly arranged on the top inner circumferential wall of the mother shell 23, and an outer ring stage 211 is coaxially and fixedly sleeved on the outer circumferential wall near the top of the base tube 21. When installing, the mother shell 23 is arranged to be pressed on the base tube 21 through the inner ring stage 231.

[0030] When in use, first strip the end of a cable 7 to expose the core 71 and insert it into the male terminal 1, then insert the other cable 7 into the base tube 21 and conductively connect it to the conductive disk 22, then drive the male terminal 1 to move in the direction close to the connector terminal 2, so that the core 71 on the male terminal 1 is inserted into the outer support tube 31 and is stretched open by the inner support tube 32, then drive the base disk 3 to move away from the male terminal 1 through the shift block 33, and the base disk 3 simultaneously drives the outer support tube 31 to be pulled out from the outer spiral strip 41 and the inner support tube 32 to be pulled out from the inner spiral strip 42, under the action of elasticity, the outer spiral strip 41 is spirally clamped on the outside of the core 71, and the inner spiral strip 42 is spirally supported on the inside of the core 71, so that the core 71 can be spirally clamped, and then the female shell 23 is threadedly inserted into the male terminal 1 to realize the plug-in connection between the male terminal 1 and the connector terminal 2. By adopting the method of simultaneously screw-clamping the wire core 71 inside and outside, sufficient contact area is ensured between the conductive parts of the male terminal 1 and the connector terminal 2, and the wire core 71 is in a scattered state, so that the contact area between the wire core 71 and the air is larger, thereby improving the heat dissipation efficiency of the wire core 71 while ensuring the conductive performance of the connector.

[0031] And when the male terminal 1 and / or the connector terminal 2 tend to move away from each other under external disturbance, the male terminal 1 tends to drive the wire core 71 away from the outer spiral strip 41, and the connector terminal 2 tends to drive the outer spiral strip 41 away from the wire core 71, so that the outer spiral strip 41 tends to lengthen, and the outer spiral strip 41 tends to shrink inward while lengthening, thereby hindering the relative movement between the wire core 71 and the outer spiral strip 41, thereby ensuring the connection stability of the high current-carrying connector.

[0032] In some embodiments, in order to further improve the heat dissipation efficiency of the core 71, the outer spiral strip 41 and the inner spiral strip 42 are arranged to have opposite rotation directions.

[0033] Specifically in this embodiment, the outer spiral strip 41 can be arranged to spiral in a clockwise direction, and the inner spiral strip 42 can be arranged to spiral in a counterclockwise direction.

[0034] When in use, under the action of elasticity, the outer spiral strip 41 has a tendency to tighten the wire core 71 and drive the outer wire core 71 to twist in a clockwise direction, and the inner spiral strip 42 has a tendency to support the wire core 71 and drive the inner wire core 71 to twist in a counterclockwise direction, so that the inner and outer layer wire cores 71 can be staggered along the circumferential direction, which improves the air circulation efficiency and makes the wire core 71 more difficult to be pulled, thereby further improving the heat dissipation efficiency of the wire core 71 and improving the anti-interference ability of the connector.

[0035] In other embodiments, the outer spiral strip 41 may also be arranged to spiral in a counterclockwise direction, and the inner spiral strip 42 may also be arranged to spiral in a clockwise direction; the principle and effect are the same as above and will not be described in detail.

[0036] In a further embodiment, the connector terminal 2 is configured to further include a first rotating assembly 5 , and the first rotating assembly 5 is configured to provide a driving force for tightening the outer spiral strip 41 .

[0037] After the high current-carrying connector has been used for a long time, the connection between the male terminal 1 and the connector terminal 2 will become loose. The connection stability of the high current-carrying connector can be ensured by regular inspections and by tightening the outer spiral strip 41 through the first rotating component 5 during the inspection.

[0038] In a further embodiment, the first rotating component 5 is configured to include an inner tooth ring 51 and a first outer tooth ring 52. The first outer tooth ring 52 can be rotatably disposed on the conductive disk 22 and is located on the same side as the outer spiral strip 41. The first outer tooth ring 52 and the conductive disk 22 are conductively connected, and one end of the outer spiral strip 41 close to the base disk 3 is fixedly disposed on the first outer tooth ring 52; the inner tooth ring 51 is coaxially disposed with the base cylinder 21, and meshes with the first outer tooth ring 52, and can rotate unidirectionally to drive the outer spiral strip 41 to tighten through the first outer tooth ring 52.

[0039] Specifically in this embodiment, a plurality of first teeth are evenly arranged on the inner peripheral wall of the inner gear ring 51; Figure 6 As shown, an annular placement area 226 is built into the inner circumferential wall of the base cylinder 21 and below the conductive disk 22. The inner gear ring 51 is configured to be inserted into the placement area 226 during installation; Fig.11 As shown, the first outer gear ring 52 is configured to be composed of two spaced and fixed annular structures, and a plurality of second teeth are evenly arranged on the outer peripheral wall of the first outer gear ring 52, and the second teeth are meshed with the first teeth.

[0040] In order to facilitate the control of the rotation direction of the inner gear ring 51, Figure 5 As shown, a second slide groove 213 is provided through the circumferential side wall of the base tube 21 near the middle, and the first slide groove 212 is provided as an arc structure and is provided parallel to the axis of the base tube 21. Fig.10 As shown, a rotating block 511 is fixedly provided on the outer peripheral wall of the inner gear ring 51. When installing, the inner gear ring 51 is arranged so that the rotating block 511 is slidably inserted into the second slide groove 213; and a larger friction force can be provided between the contact surfaces of the rotating block 511 and the second slide groove 213 to realize the unidirectional rotation of the inner gear ring 51.

[0041] It is understandable that a ratchet structure may be provided between the contact surface of the rotating block 511 and the second sliding groove 213 to achieve unidirectional rotation of the inner gear ring 51 .

[0042] During inspection, the rotating block 511 is turned, and the rotating block 511 drives the inner gear ring 51 to rotate. The inner gear ring 51 drives the first outer gear ring 52 to rotate in the same direction through the engagement between the second teeth and the first teeth. The first outer gear ring 52 drives one end of the outer spiral strip 41 to rotate, so that the outer spiral strip 41 is tightened.

[0043] In a further embodiment, the connector terminal 2 is configured to further include a second rotating assembly 6 , and the second rotating assembly 6 is configured to provide a driving force for supporting the inner spiral strip 42 outwardly.

[0044] After the high current-carrying connector has been used for a long time, the connection between the male terminal 1 and the connector terminal 2 will become loose. This can be achieved through regular inspections, and during the inspections, the second rotating component 6 can be used to support the inner spiral strip 42 to ensure the connection stability of the high current-carrying connector.

[0045] In a further embodiment, the second rotating component 6 is configured to include a second outer tooth ring 61, fixed teeth and a limiting tooth rod 62. The second outer tooth ring 61 can be rotatably arranged on the conductive disk 22 and is located on the same side as the inner spiral strip 42. The inner spiral strip 42 is fixedly arranged on the second outer tooth ring 61 at one end close to the base disk 3; there are multiple fixed teeth, which are circumferentially arranged on the inner circumferential wall of the first outer tooth ring 52; the limiting tooth rod 62 is configured to limit both the first outer tooth ring 52 and the second outer tooth ring 61 on the conductive disk 22, and at the same time engage with the fixed teeth and the second outer tooth ring 61.

[0046] Specifically in this embodiment, a plurality of fixed teeth are arranged at equal intervals along the circumferential direction on the inner circumferential wall of the annular structure located on the inner side of the first outer gear ring 52; Fig.12 As shown, the second outer gear ring 61 is configured as an annular structure, and a plurality of third teeth are evenly arranged on the outer peripheral wall of the second outer gear ring 61; Figure 7 As shown, the limit gear rod 62 is configured to be composed of a first disc-shaped part, a columnar part and a third disc-shaped part, wherein the columnar part is configured as a T-shaped rotating body structure, the first disc-shaped part is coaxially arranged at the small end of the columnar part, and the second disc-shaped part is coaxially arranged at the large end of the columnar part. When installing, the limit gear rod 62 is configured so that the first disc-shaped part stops on the upper end surface of the conductive disk 22, the large end of the columnar part stops on the lower end surface of the conductive disk 22, and the second disc-shaped part stops on the first outer tooth ring 52 and the second outer tooth ring 61 at the same time, and a plurality of fourth teeth are evenly arranged on the circumferential side wall of the columnar part, and the fourth teeth are meshed with the fixed teeth and the third teeth at the same time.

[0047] To facilitate installation of the limit gear rod 62, Fig.14 As shown, a mounting hole 223 is provided between the first arc hole 221 and the second arc hole 222. Figure 7 As shown, the limiting gear rod 62 is arranged such that the small end of the columnar part passes through the installation hole 223 during installation.

[0048] It can be understood that, in order to improve the transmission stability between the first outer gear ring 52 and the second outer gear ring 61, the number of the limiting gear rods 62 can be multiple and evenly arranged along the circumferential direction; for example, the number of the limiting gear rods 62 can be six, and accordingly, Fig.14 As shown, there are six mounting holes 223 , which are evenly arranged along the circumferential direction, and the center of the circle formed by the six mounting holes 223 coincides with the center of the circle formed by the three first arc holes 221 .

[0049] During inspection, the rotating block 511 is turned, and the rotating block 511 drives the inner gear ring 51 to rotate. The inner gear ring 51 drives the first outer gear ring 52 to rotate in the same direction through the engagement between the second tooth and the first tooth. On the one hand, the first outer gear ring 52 drives one end of the outer spiral strip 41 to rotate, so that the outer spiral strip 41 is tightened. On the other hand, it drives the limiting gear rod 62 to rotate through the engagement between the fixed tooth and the fourth tooth. The limiting gear rod 62 drives the second outer gear ring 61 to rotate in the opposite direction through the engagement between the fourth tooth and the third tooth. The second outer gear ring 61 drives one end of the inner spiral strip 42 to rotate, so that the inner spiral strip 42 is expanded.

[0050] In other embodiments, in order to improve the circumferential uniformity of the wire core 71 when it is expanded by the inner support tube, the bottom of the inner support tube 32 is configured as a conical structure with the small end facing the other terminal.

[0051] Specifically in this embodiment, Fig. 9 As shown, the bottom of the inner support tube 32 is configured as a conical structure, and the small end is configured away from the base plate 3 .

[0052] When the male terminal 1 moves toward the connector terminal 2 , the wire core 71 can be evenly pushed open along the circumferential direction under the guidance of the conical structure, thereby avoiding local concentration of the inner wire core 71 and affecting the heat dissipation efficiency of the wire core 71 .

[0053] In other embodiments, in order to further improve the heat dissipation efficiency of the wire core 71, the base plate 3, the outer support tube 31 and the inner support tube 32 are all configured to be made of heat-conducting materials.

[0054] Specifically in this embodiment, the base plate 3, the outer support tube 31 and the inner support tube 32 can be made of thermally conductive materials such as ceramic materials and graphite, so that when in use, the base plate 3, the outer support tube 31 and the inner support tube 32 can easily absorb the internal heat and gradually exchange the heat with the outside world inside the base tube 21.

[0055] In other embodiments, in order to further improve the contact area between the conductive parts of the male terminal 1 and the connector terminal 2 and the heat dissipation efficiency of the wire core 71, there are multiple outer support tubes 31 and inner support tubes 32; the number of wire clamping parts 4 is equal to the number of outer support tubes 31, and they are arranged one by one.

[0056] Specifically in this embodiment, the number of the outer support tube 31 and the number of the inner support tube 32 are both three, as an example. Figure 8 As shown, the three outer support tubes 31 are evenly arranged along the circumferential direction, and the three inner support tubes 32 are evenly arranged along the circumferential direction, and the center of the circle formed by the axes of the three outer support tubes 31 coincides with the axis of the base plate 3; there are three outer spiral strips 41, which are sleeved on the outer support tubes 31 in a one-to-one correspondence, and there are multiple inner spiral strips 42, which are inserted into the inner support tubes 32 in a one-to-one correspondence; as shown in FIG. Fig.10As shown, the inner gear ring 51 meshes with the three first outer gear rings 52 at the same time.

[0057] When in use, the wire core 71 on the male terminal 1 can be first divided into three strands, and then inserted into three outer support tubes 31 respectively, and each strand is independently clamped by a group of outer spiral strips 41 and inner spiral strips 42. On the one hand, the contact area between the male terminal 1 and the conductive part of the connector terminal 2 can be increased, and on the other hand, the contact area between the wire core 71 and the air can be increased, thereby further improving the contact area between the conductive part of the male terminal 1 and the connector terminal 2 and the heat dissipation efficiency of the wire core 71.

[0058] In other embodiments, in order to further improve the heat dissipation efficiency of the core 71, as Fig.14 As shown, a plurality of first heat dissipation holes 224 are provided on the conductive plate 22 and located outside the first arc hole 221, and a second heat dissipation hole 225 is provided inside the second arc hole 222; Fig. 9 As shown, a plurality of third heat dissipation holes 301 are provided on the end surface of the base plate 3 .

[0059] When in use, air can circulate through the first heat dissipation holes 224 , the second heat dissipation holes 225 and the third heat dissipation holes 301 .

[0060] In other embodiments, to improve the convenience of installation, Fig.13 As shown, an annular positioning ring 11 is coaxially arranged inside the male terminal 1. Figure 4 As shown, the positioning ring 11 is arranged to be inserted into the bottom of the base tube 21 during installation, and the outer peripheral wall of the positioning ring 11 abuts against the inner peripheral wall of the base tube 21 to avoid the alignment link between the wire core 71 and the outer support tube 31.

[0061] In other embodiments, in order to avoid slipping, a plurality of friction protrusions are provided on the outer peripheral walls of the female housing 23 and the male terminal 1 along the circumferential direction.

[0062] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A connector terminal, characterized in that: The connector terminal comprises: A base cylinder, wherein a conductive disk and a base disk are coaxially inserted inside the base cylinder, the conductive disk is fixedly arranged and conductively connected to the cable; the base disk is located on a side away from the other terminal and can slide along the axial direction of the base cylinder, an outer support tube and an inner support tube are vertically arranged on the end surface of the base disk on a side facing the conductive disk, the wire core on the other terminal is inserted into the outer support tube when in use, the inner support tube is coaxially inserted inside the outer support tube, and is arranged as a split structure and has elasticity, and the inner support tube is configured to be able to open the wire core on the other terminal; A wire clamping part, the wire clamping part is inserted into the base tube, and is conductively connected to the cable, and is located on both sides of the conductive disk with the base disk; the wire clamping part includes an outer spiral strip and an inner spiral strip, the outer spiral strip is elastic, and is sleeved on the outer support tube, and has a tendency to clamp the wire core on the other terminal; the inner spiral strip is elastic, and is inserted into the inner support tube, and has a tendency to open the wire core on the other terminal; A female shell is sleeved on the base cylinder, and the female shell and the base cylinder are matched in a stop-fit ​​manner.

2. The connector terminal according to claim 1, characterized in that: The outer helical strip and the inner helical strip have opposite directions of rotation.

3. The connector terminal according to claim 2, characterized in that: The connector terminal further includes a first rotating assembly configured to provide a driving force for tightening the outer spiral strip.

4. The connector terminal according to claim 3, characterized in that: The first rotating component includes an inner gear ring and a first outer gear ring. The first outer gear ring is rotatably arranged on the conductive disk and is located on the same side as the outer spiral strip. The first outer gear ring is conductively connected to the conductive disk. One end of the outer spiral strip close to the base disk is fixedly arranged on the first outer gear ring. The inner gear ring is coaxially arranged with the base cylinder and meshes with the first outer gear ring and can rotate unidirectionally to drive the outer spiral strip to be tightened through the first outer gear ring.

5. The connector terminal according to claim 4, characterized in that: The connector terminal further includes a second rotating assembly, which is configured to provide a driving force for supporting the inner spiral strip.

6. The connector terminal according to claim 5, characterized in that: The second rotating assembly includes a second outer tooth ring, fixed teeth and a limiting tooth rod. The second outer tooth ring can be rotatably arranged on the conductive disk and is located on the same side as the inner spiral strip. The inner spiral strip is fixedly arranged on the second outer tooth ring at one end close to the base disk. There are multiple fixed teeth, which are circumferentially arranged on the inner circumferential wall of the first outer tooth ring. The limiting tooth rod is configured to limit both the first outer tooth ring and the second outer tooth ring on the conductive disk, and simultaneously mesh with the fixed teeth and the second outer tooth ring.

7. The connector terminal according to claim 1, characterized in that: The bottom of the inner support tube is configured as a conical structure, with the small end facing the other terminal.

8. The connector terminal according to claim 1, characterized in that: The base plate, the outer support tube and the inner support tube are all made of heat-conducting material.

9. The connector terminal according to claim 1, characterized in that: There are multiple numbers of the outer supporting tubes and the inner supporting tubes; the number of the wire clamping parts is equal to the number of the outer supporting tubes, and they are arranged in a one-to-one correspondence.

10. A high current carrying connector, characterized in that: The high current-carrying connector comprises a male terminal and a connector terminal according to any one of claims 1 to 9, wherein the male terminal is threadedly sleeved on a female housing when in use, and the cable on the male terminal is stripped to expose the wire core when in use.

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