A high-current-carrying connector and a connector terminal

Abstract

The present invention relates to the technical field of connectors, and particularly relates to a high-current-carrying connector and a connector terminal. The high-current-carrying connector includes a male terminal and a connector terminal; the connector terminal includes a base cylinder, a wire clamping portion, and a female housing. A conductive disc and a base disc are coaxially inserted inside the base cylinder. An outer support tube and an inner support tube are vertically arranged on one end face of the base disc facing the conductive disc. The wire clamping portion is inserted inside the base cylinder and is electrically connected to a cable, and includes an outer spiral strip and an inner spiral strip. The outer spiral strip has elasticity and is sleeved on the outer support tube and has a tendency to clamp the wire core on the male terminal; the inner spiral strip has elasticity and is inserted inside the inner support tube and has a tendency to expand the wire core on the male terminal; the female housing is sleeved on the base cylinder, and the cooperation mode between the female housing and the base cylinder is a stop fit. During use, the outer spiral strip and the inner spiral strip can clamp the wire core on the male terminal, which can not only ensure that there is sufficient contact area between the terminals but also ensure the electrical conductivity of the connector.

Description

Technical Field

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

[0002] A high-current-carrying connector is a connector capable of withstanding high-current transmission, and is widely used in fields such as electric vehicles, industrial automation, and data centers. When designing this connector, multiple factors need to be considered to ensure its reliability and stability in a high-current environment.

[0003] From the perspectives of materials and structural design, high-current-carrying connectors usually adopt materials with excellent electrical conductivity, such as pure copper or silver-plated copper, to improve their electrical conductivity and reduce contact resistance. In addition, the structural design of high-current-carrying connectors is also crucial, and it is necessary to ensure good heat dissipation performance and mechanical strength to cope with the heat and mechanical stress generated by high currents.

[0004] In related technologies, for example, Chinese Patent CN219203694U discloses a large-current male-female connector. When using this large-current male-female connector, first, the cable cores on two cables are respectively fixed on the female-end positioning seat and the male-end positioning seat, then the female-end fixing seat and the male-end fixing base are respectively placed into 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 large-current male-female connector can improve the simplicity of cable connection to a certain extent, due to the small contact area between its male and female terminals, the current-carrying capacity is weak, and it is prone to looseness during long-term use. Moreover, when a large current passes through, the heat accumulation between the male and female terminals is relatively serious, affecting the electrical conductivity of the connector. Summary of the Invention

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

[0007] The above object is achieved by the following technical solutions:

[0008] A connector terminal, the connector terminal includes:

[0009] Base cylinder, inside which a conductive disk and a base disk are coaxially inserted. The conductive disk is fixedly arranged and electrically connected to a cable. The base disk is located on the side away from the male terminal and can slide along the axis direction of the base cylinder. On the end face of the side of the base disk facing the conductive disk, an outer support tube and an inner support tube are vertically arranged. The wire core on the male terminal is inserted into the outer support tube during use. The inner support tube is coaxially inserted inside the outer support tube, is arranged as a split structure and has elasticity. The inner support tube is configured to be able to expand the wire core on the male terminal.

[0010] Wire clamping part, which is inserted into the base cylinder, is electrically 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 has elasticity, is sleeved on the outer support tube, and has a tendency to clamp the wire core on the male terminal. The inner spiral strip has elasticity and is inserted into the inner support tube, and has a tendency to expand the wire core on the male terminal.

[0011] Female shell, which is sleeved on the base cylinder, and the cooperation mode between the female shell and the base cylinder is a stop fit.

[0012] Further, the spiral directions of the outer spiral strip and the inner spiral strip are opposite.

[0013] Further, the connector terminal further includes a first rotation assembly, which is configured to be able to provide the driving force for the outer spiral strip to tighten.

[0014] Further, the first rotation assembly 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 on the same side as the outer spiral strip. The first outer gear ring is electrically connected to the conductive disk, and the 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, meshes with the first outer gear ring, and can rotate unidirectionally to drive the outer spiral strip to tighten through the first outer gear ring.

[0015] Further, the connector terminal further includes a second rotation assembly, which is configured to be able to provide the driving force for the inner spiral strip to expand.

[0016] Further, the second rotating assembly includes a second external gear ring, fixed teeth, and a limiting tooth rod. The second external gear ring is rotatably arranged on the conductive disk and is on the same side as the inner spiral strip. One end of the inner spiral strip close to the base disk is fixedly arranged on the second external gear ring. There are multiple fixed teeth, which are arranged on the inner peripheral wall of the first external gear ring along the circumferential direction. The limiting tooth rod is configured to limit both the first external gear ring and the second external gear ring on the conductive disk and simultaneously mesh with the fixed teeth and the second external gear ring.

[0017] Further, the bottom of the inner support tube is provided with a conical structure, and the small end faces the male terminal.

[0018] Further, the base disk, the outer support tube, and the inner support tube are all made of heat-conducting materials.

[0019] Further, the number of the outer support tubes and the inner support tubes is multiple; the number of the wire clamping parts is equal to the number of the outer support tubes, and they are arranged in one-to-one correspondence.

[0020] The present invention also provides a high-current-carrying connector, which includes a male terminal and a connector terminal. When in use, the male terminal is threadedly sleeved on the female housing, and the wire core of the cable on the male terminal is exposed when in use.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention relates to a high-current-carrying connector and a connector terminal. The high-current-carrying connector includes a male terminal and a connector terminal that can be inserted into each other. When in use, first, the end of a cable is stripped to expose the wire core and connected to the male terminal. Then, another cable is inserted into the base cylinder and electrically connected to the conductive disk. Then, the male terminal is driven to move towards the connector terminal, so that the wire core on the male terminal is inserted into the inner support tube and is expanded by the inner support tube. Then, the base disk is driven to move away from the male terminal, and 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 outside of the inner spiral strip. Under the elastic action, the outer spiral strip spirally clamps the outside of the wire core, and the inner spiral strip spirally supports the inside of the wire core, so that the wire core can be spirally clamped. Then, the female housing is threadedly inserted into the male terminal to realize the insertion connection between the male terminal and the connector terminal. By adopting the method of simultaneously spirally clamping the wire core inside and outside, it not only ensures that there is enough contact area between the conductive parts of the male terminal and the connector terminal, but also makes the wire core in a dispersed state, so that the contact area between the wire core and the air is larger, thereby improving the heat dissipation efficiency of the wire core while ensuring the electrical conductivity of the connector.

[0023] Furthermore, by setting the spiral directions of the outer spiral strip and the inner spiral strip to be opposite, when in use, the wire cores of the inner and outer layers can be arranged in a circumferential dislocation manner, which can not only improve the air circulation efficiency but also make it more difficult for the wire cores to be pulled, thereby further improving the heat dissipation efficiency of the wire cores and enhancing the anti-interference ability of the connector. Brief Description of the Drawings

[0024] Figure 1 Schematic perspective view of a high-current-carrying connector connecting a cable according to an embodiment of the present invention;

[0025] Figure 2 Schematic exploded view of parts when a high-current-carrying connector connects a cable according to an embodiment of the present invention Figure 1 ;

[0026] Figure 3 Schematic exploded view of parts when a high-current-carrying connector connects a cable according to an embodiment of the present invention Figure 2 ;

[0027] Figure 4 Schematic cross-sectional view of a high-current-carrying connector connecting a cable according to an embodiment of the present invention;

[0028] Figure 5 Schematic perspective view of the assembly of the base cylinder, base plate, wire clamping part, first rotating assembly and second rotating assembly of a high-current-carrying connector according to an embodiment of the present invention;

[0029] Figure 6 Schematic perspective cross-sectional view of the assembly of the base cylinder, base plate, wire clamping part, first rotating assembly and second rotating assembly of a high-current-carrying connector according to an embodiment of the present invention;

[0030] Figure 7 is Figure 6 Schematic enlarged view of the partial structure at A in

[0031] Figure 8 Schematic perspective view of the assembly of the base plate, wire clamping part, first rotating assembly and second rotating assembly of a high-current-carrying connector according to an embodiment of the present invention;

[0032] Figure 9 Schematic perspective view of the base plate of a high-current-carrying connector according to an embodiment of the present invention;

[0033] Figure 10 Schematic perspective view of the assembly of the wire clamping part, first rotating assembly and second rotating assembly of a high-current-carrying connector according to an embodiment of the present invention;

[0034] Figure 11 Schematic perspective view of the assembly of the outer spiral strip and the first outer tooth ring of a high-current-carrying connector according to an embodiment of the present invention;

[0035] Figure 12 Schematic three - dimensional structure diagram when the inner spiral strip and the second outer tooth ring of the high - current - carrying connector provided by an embodiment of the present invention are assembled;

[0036] Figure 13 Schematic three - dimensional structure diagram when the male terminal and the cable of the high - current - carrying connector provided by an embodiment of the present invention are assembled;

[0037] Figure 14 Top - view structure diagram of the base cylinder of the high - current - carrying connector provided by an embodiment of the present invention;

[0038] Figure 15 Schematic three - dimensional sectional structure diagram of the base cylinder of the high - current - carrying connector provided by an embodiment of the present invention.

[0039] Wherein:

[0040] 1. Male terminal; 11. Positioning ring;

[0041] 2. Connector terminal; 21. Base cylinder; 211. Outer ring platform; 212. First chute; 213. Second chute; 22. Conductive disc; 221. First arc hole; 222. Second arc hole; 223. Mounting hole; 224. First heat - dissipation hole; 225. Second heat - dissipation hole; 226. Placing area; 23. Female shell; 231. Inner ring platform;

[0042] 3. Base plate; 301. Third heat - dissipation hole; 31. Outer support tube; 32. Inner support tube; 33. Pushing block;

[0043] 4. Wire clamping part; 41. Outer spiral strip; 42. Inner spiral strip;

[0044] 5. First rotating assembly; 51. Inner tooth ring; 511. Rotating block; 52. First outer tooth ring;

[0045] 6. Second rotating assembly; 61. Second outer tooth ring; 62. Limit tooth rod;

[0046] 7. Cable; 71. Core wire. Detailed implementation manners

[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be 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.

[0048] The serial numbers assigned to components in this document itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the terms "connected" and "coupled" as used herein, unless otherwise specifically stated, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and 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 thus cannot be construed as a limitation on the present invention.

[0049] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be 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, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0050] As Figures 1 to 15 shown, a high-current connector provided by an 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. The connector terminal 2 is configured to include a base cylinder 21, a wire clamping portion 4 and a female housing 23. A conductive disk 22 and a base disk 3 are coaxially inserted inside the base cylinder 21. The conductive disk 22 is fixedly arranged and is electrically connected to the cable 7. The base disk 3 is located on the side away from the male terminal 1 and can slide along the axial direction of the base cylinder 21. An outer support tube 31 and an inner support tube 32 are vertically arranged on the end surface of the side of the base disk 3 facing the conductive disk 22. The wire core 71 on the male terminal 1 is inserted into the outer support tube 31 during use. The inner support tube 32 is coaxially inserted inside the outer support tube 31 and is configured as a split structure and has elasticity. The inner support tube 32 is configured to be able to expand the wire core 71 on the male terminal 1. The wire clamping portion 4 is inserted into the base cylinder 21, is electrically connected to the cable 7, and is located on both sides of the conductive disk 22 with the base disk 3. The wire clamping portion 4 is configured to include an outer spiral strip 41 and an inner spiral strip 42. The outer spiral strip 41 has elasticity, is sleeved on the outer support tube 31, and has a tendency to clamp the wire core 71 on the male terminal 1. The inner spiral strip 42 has elasticity, is inserted into the inner support tube 32, and has a tendency to expand the wire core 71 on the male terminal 1. The female housing 23 is sleeved on the base cylinder 21, and the mating manner between the female housing 23 and the base cylinder 21 is a stop fit.

[0051] The male terminal 1 is set to be threadedly sleeved on the female housing 23 during use, and the cable 7 on the male terminal 1 has its core 71 exposed during use.

[0052] Specifically in this embodiment, as Figure 6 shown, the base cylinder 21 is set to be a cylindrical structure with both ends open, the conductive disc 22 is set to be a disc-shaped structure, and is arranged near the middle of the base cylinder 21 during installation; as Figure 9 shown, the base plate 3 is set to be a disc-shaped structure, and is located on the left side of the conductive disc 22 during installation. The outer support tube 31 and the inner support tube 32 are both set to be tubular structures, and are both fixedly connected to the right end face of the base plate 3; the outer support tube 31 is set to be a split structure and is composed of three equally spaced first arc-shaped plates; the inner support tube 32 is set to be a split structure and is composed of three equally spaced second arc-shaped plates, and to prevent the 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 Figure 4 shown, the female housing 23 is set to be a cylindrical structure with both ends open, and an external thread is provided on the outer peripheral wall of the bottom of the female housing 23. The male terminal 1 is set to be a cylindrical structure with both ends open, and an internal thread is provided on the inner peripheral wall of the top of the male terminal 1. The male terminal 1 is set to be threadedly sleeved on the female housing 23 through the cooperation between the internal thread and the external thread during use.

[0053] To facilitate the outer support tube 31 and the outer spiral strip 41 to be on the same side, and the inner support tube 32 and the inner spiral strip 42 to be on the same side, as Figure 14 shown, three first arc-shaped holes 221 are circumferentially and equally spacedly formed on the disc surface of the conductive disc 22. The first arc-shaped plates are set to penetrate through the first arc-shaped holes 221 one by one during installation; three second arc-shaped holes 222 are circumferentially and equally spacedly formed on the disc surface of the conductive disc 22, and the center of the circle formed by the three second arc-shaped holes 222 coincides with the center of the circle formed by the three first arc-shaped holes 221. The second arc-shaped plates are set to penetrate through the second arc-shaped holes 222 one by one during installation.

[0054] To facilitate controlling the sliding direction of the base plate 3 inside the base cylinder 21, as Figure 5 shown, a first sliding groove 212 is penetrated and formed on the upper circumferential side wall of the base cylinder 21. The first sliding groove 212 is set to be a strip-shaped structure and is arranged parallel to the axis of the base cylinder 21; as Figure 9 shown, a T-shaped dial block 33 is provided on the outer peripheral wall of the base plate 3. The base plate 3 is set to have the dial block 33 slidably inserted into the first sliding groove 212 during installation.

[0055] To facilitate achieving the stop fit between the female housing 23 and the base cylinder 21, as Figure 4As shown in the figure, an inner ring platform 231 is coaxially and fixedly arranged on the inner peripheral wall at the top of the female housing 23. An outer ring platform 211 is coaxially and fixedly sleeved on the outer peripheral wall near the top of the base cylinder 21. When installed, the female housing 23 is arranged to press on the base cylinder 21 through the inner ring platform 231.

[0056] During use, first, the end of a cable 7 is stripped to expose the wire core 71, and the wire core 71 is inserted into the male terminal 1. Then, another cable 7 is inserted onto the base cylinder 21 and electrically connected to the conductive disk 22. Then, the male terminal 1 is driven to move towards the direction close to the connector terminal 2, so that the wire core 71 on the male terminal 1 is inserted into the outer support tube 31 and is expanded by the inner support tube 32. Then, the base plate 3 is driven to move away from the male terminal 1 through the dial block 33. The base plate 3 synchronously 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 outside of the inner spiral strip 42. Under the elastic action, the outer spiral strip 41 spirally clamps the outside of the wire core 71, and the inner spiral strip 42 spirally supports the inside of the wire core 71, so that the wire core 71 can be spirally clamped. Then, the female housing 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 spirally clamping the wire core 71 inside and outside, it not only ensures that there is enough contact area between the conductive parts of the male terminal 1 and the connector terminal 2, but also makes the wire core 71 in a dispersed 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 electrical conductivity of the connector.

[0057] And when the male terminal 1 and / or the connector terminal 2 have a tendency to move away from each other under the disturbance of the outside world, at this time, the male terminal 1 has a tendency to drive the wire core 71 away from the outer spiral strip 41, and the connector terminal 2 has a tendency to drive the outer spiral strip 41 away from the wire core 71, so that the outer spiral strip 41 has a tendency to become longer. While the outer spiral strip 41 becomes longer, it has a tendency to contract inward, so as to be able to hinder the relative movement between the wire core 71 and the outer spiral strip 41 and ensure the connection stability of the high-current-carrying connector.

[0058] In some embodiments, to further improve the heat dissipation efficiency of the wire core 71, the outer spiral strip 41 and the inner spiral strip 42 are set to have opposite helix directions.

[0059] Specifically in this embodiment, the outer spiral strip 41 can be set to spiral clockwise, and the inner spiral strip 42 can be set to spiral counterclockwise.

[0060] During use, under the action of elasticity, the outer spiral strip 41 has a tendency to tighten the wire core 71 and drive the outer layer wire core 71 to twist clockwise, and the inner spiral strip 42 has a tendency to support the wire core 71 outward and drive the inner layer wire core 71 to twist counterclockwise. As a result, the wire cores 71 of the inner and outer layers can be arranged with a circumferential offset. While improving the air circulation efficiency, it makes it more difficult for the wire core 71 to be pulled, thereby not only further improving the heat dissipation efficiency of the wire core 71 but also enhancing the anti-interference ability of the connector.

[0061] In other embodiments, the outer spiral strip 41 can also be arranged to spiral counterclockwise, and the inner spiral strip 42 can also be arranged to spiral clockwise; the principle and effect are the same as above and will not be elaborated further.

[0062] In a further embodiment, the connector terminal 2 is further provided with a first rotating assembly 5, and the first rotating assembly 5 is configured to be able to provide the driving force for tightening the outer spiral strip 41.

[0063] After the high-current-carrying connector is used for a long time, the connection between the male terminal 1 and the connector terminal 2 will become loose. It can be ensured by regular inspections and by tightening the outer spiral strip 41 through the first rotating assembly 5 during the inspections to ensure the connection stability of the high-current-carrying connector.

[0064] In a further embodiment, the first rotating assembly 5 is provided to include an internal gear ring 51 and a first external gear ring 52. The first external gear ring 52 is rotatably arranged on the conductive disk 22 and is on the same side as the outer spiral strip 41. The first external gear ring 52 is electrically connected to the conductive disk 22, and one end of the outer spiral strip 41 close to the base disk 3 is fixedly arranged on the first external gear ring 52; the internal gear ring 51 is coaxially arranged with the base cylinder 21 and meshes with the first external gear ring 52 and can rotate unidirectionally to drive the outer spiral strip 41 to tighten through the first external gear ring 52.

[0065] Specifically in this embodiment, a plurality of first teeth are evenly arranged on the inner peripheral wall of the internal gear ring 51; for the convenience of installing the internal gear ring 51, as Figure 6 shown, an annular placement area 226 is internally provided on the inner peripheral wall of the base cylinder 21 and below the conductive disk 22. When installing, the internal gear ring 51 is arranged to be inserted into the placement area 226; as Figure 11 shown, the first external gear ring 52 is composed of two spaced and fixedly arranged annular structures. A plurality of second teeth are evenly arranged on the outer peripheral wall of the first external gear ring 52, and the second teeth mesh with the first teeth.

[0066] For the convenience of controlling the rotation direction of the internal gear ring 51, as Figure 5 shown, a second chute 213 is penetrated and opened on the circumferential side wall of the base cylinder 21 near the middle. The first chute 212 is arranged as an arc-shaped structure and is parallel to the axis of the base cylinder 21. As Figure 10As shown, a rotating block 511 is fixedly arranged on the outer peripheral wall of the internal gear ring 51. When the internal gear ring 51 is installed, the rotating block 511 is slidably inserted into the second chute 213; and by setting a relatively large frictional force between the contact surfaces of the rotating block 511 and the second chute 213, the one-way rotation of the internal gear ring 51 can be realized.

[0067] It can be understood that the one-way rotation of the internal gear ring 51 can also be realized by arranging a ratchet structure between the contact surfaces of the rotating block 511 and the second chute 213.

[0068] During inspection, the rotating block 511 is toggled. The rotating block 511 drives the internal gear ring 51 to rotate self - sufficiently. The internal gear ring 51 drives the first external gear ring 52 to rotate in the same direction through the engagement between the second tooth and the first tooth. The first external gear ring 52 drives one end of the external spiral bar 41 to rotate, so that the external spiral bar 41 is tightened.

[0069] In a further embodiment, the connector terminal 2 is further provided with a second rotating assembly 6. The second rotating assembly 6 is configured to be able to provide a driving force for the outward support of the internal spiral bar 42.

[0070] After the high - current - carrying connector is used for a long time, the connection between the male terminal 1 and the connector terminal 2 will become loose. By regular inspection and, during inspection, making the internal spiral bar 42 support outward through the second rotating assembly 6, the connection stability of the high - current - carrying connector can be ensured.

[0071] In a further embodiment, the second rotating assembly 6 is provided to include a second external gear ring 61, fixed teeth, and a limiting tooth bar 62. The second external gear ring 61 is rotatably arranged on the conductive disc 22 and is on the same side as the internal spiral bar 42. One end of the internal spiral bar 42 close to the base disc 3 is fixedly arranged on the second external gear ring 61; there are multiple fixed teeth, which are arranged circumferentially on the inner peripheral wall of the first external gear ring 52; the limiting tooth bar 62 is configured to be able to limit both the first external gear ring 52 and the second external gear ring 61 on the conductive disc 22 and is simultaneously engaged with the fixed teeth and the second external gear ring 61.

[0072] Specifically in this embodiment, multiple fixed teeth are arranged circumferentially and equidistantly on the inner peripheral wall of the inner annular structure of the first external gear ring 52; as Figure 12 shown, the second external gear ring 61 is arranged as an annular structure, and multiple third teeth are evenly arranged on the outer peripheral wall of the second external gear ring 61; as Figure 7As shown, the limit tooth bar 62 is set to be composed of a first disc-shaped part, a columnar part, and a third disc-shaped part. The columnar part is set to be 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 installed, the limit tooth bar 62 is set such that the first disc-shaped part abuts against the upper end face of the conductive disc 22, the large end of the columnar part abuts against the lower end face of the conductive disc 22, and the second disc-shaped part abuts against both the first external tooth ring 52 and the second external tooth ring 61 at the same time. Moreover, a plurality of fourth teeth are evenly arranged on the circumferential side wall of the columnar part, and the fourth teeth mesh with the fixed teeth and the third teeth at the same time.

[0073] For the convenience of installing the limit tooth bar 62, as Figure 14 shown, an installation hole 223 is provided between the first arc hole 221 and the second arc hole 222. As Figure 7 shown, when installed, the limit tooth bar 62 is set such that the small end of the columnar part penetrates through the installation hole 223.

[0074] It can be understood that, for the convenience of improving the transmission stability between the first external tooth ring 52 and the second external tooth ring 61, the number of limit tooth bars 62 can be set to be multiple and evenly arranged in the circumferential direction. For example, the number of limit tooth bars 62 can be set to six. Correspondingly, as Figure 14 shown, the number of installation holes 223 is set to six and evenly arranged in the circumferential direction. The center of the circle formed by the six installation holes 223 coincides with the center of the circle formed by the three first arc holes 221.

[0075] During the inspection, the rotating block 511 is toggled. The rotating block 511 drives the internal tooth ring 51 to rotate. The internal tooth ring 51 drives the first external tooth ring 52 to rotate in the same direction through the meshing between the second tooth and the first tooth. On the one hand, the first external tooth ring 52 drives one end of the external spiral bar 41 to rotate, causing the external spiral bar 41 to tighten. On the other hand, it drives the limit tooth bar 62 to rotate through the meshing between the fixed tooth and the fourth tooth. The limit tooth bar 62 drives the second external tooth ring 61 to rotate in the reverse direction through the meshing between the fourth tooth and the third tooth. The second external tooth ring 61 drives one end of the internal spiral bar 42 to rotate, causing the internal spiral bar 42 to expand.

[0076] In some other embodiments, for the convenience of improving the circumferential uniformity when the wire core 71 is expanded by the internal support tube, the bottom of the internal support tube 32 is set to be a conical structure, and the small end faces the male terminal 1.

[0077] Specifically in this embodiment, as Figure 9 shown, the bottom of the internal support tube 32 is set to be a conical structure, and the small end is far from the base plate 3.

[0078] When the male terminal 1 moves in the direction close to the connector terminal 2, under the guidance of the conical structure, the wire core 71 can be evenly pushed open circumferentially, thus avoiding local concentration of the inner layer wire core 71 and affecting the heat dissipation efficiency of the wire core 71.

[0079] In some other embodiments, 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 made of heat-conducting materials.

[0080] Specifically in this embodiment, the base plate 3, the outer support tube 31 and the inner support tube 32 can be made of heat-conducting materials such as ceramic materials and graphite. When in use, the base plate 3, the outer support tube 31 and the inner support tube 32 are easy to absorb the internal heat and gradually exchange the heat with the outside world inside the base cylinder 21.

[0081] In some other embodiments, to further increase 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, the number of the outer support tubes 31 and the inner support tubes 32 is set to be multiple; the number of the wire clamping parts 4 is equal to the number of the outer support tubes 31, and they are arranged in one-to-one correspondence.

[0082] Specifically in this embodiment, taking the number of the outer support tubes 31 and the inner support tubes 32 both being set to three as an example, as Figure 8 shown, the three outer support tubes 31 are evenly arranged circumferentially, the three inner support tubes 32 are evenly arranged circumferentially, and the center of the circle formed by the axes passing through the three outer support tubes 31 coincides with the axis of the base plate 3; the number of the outer spiral strips 41 is three, and they are sleeved on the outer support tubes 31 in one-to-one correspondence, the number of the inner spiral strips 42 is multiple, and they are inserted into the inner support tubes 32 in one-to-one correspondence; as Figure 10 shown, the inner gear ring 51 meshes with the three first outer gear rings 52 at the same time.

[0083] When in use, first, the wire core 71 on the male terminal 1 can be evenly divided into three strands, and then inserted into the three outer support tubes 31 correspondingly. Each strand is independently clamped by a group of outer spiral strips 41 and inner spiral strips 42. On the one hand, it can increase the contact area between the conductive parts of the male terminal 1 and the connector terminal 2, and on the other hand, it can increase the contact area between the wire core 71 and the air, so as to further increase 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.

[0084] In some other embodiments, to further improve the heat dissipation efficiency of the wire core 71, as Figure 14 shown, on the conductive disc 22, a plurality of first heat dissipation holes 224 are opened outside the first arc hole 221, and a plurality of second heat dissipation holes 225 are opened inside the second arc hole 222; as Figure 9 shown, a plurality of third heat dissipation holes 301 are opened on the end face of the base plate 3.

[0085] In use, air can flow through the first heat dissipation hole 224, the second heat dissipation hole 225, and the third heat dissipation hole 301.

[0086] In some other embodiments, to improve the simplicity during installation, as Figure 13 shown, an annular positioning ring 11 is coaxially arranged inside the male terminal 1. As Figure 4 shown, the positioning ring 11 is arranged to be inserted into the bottom of the base cylinder 21 during installation, and the outer peripheral wall of the positioning ring 11 abuts against the inner peripheral wall of the base cylinder 21 to avoid the alignment process of the wire core 71 and the outer support tube 31.

[0087] In some other embodiments, to avoid slipping, a plurality of friction protrusions are circumferentially arranged on the outer peripheral walls of the female housing 23 and the male terminal 1.

[0088] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope recorded in this specification.

[0089] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these 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 male terminal and can slide along the axial direction of the base cylinder, and 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 male 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 male 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 male 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 male 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 male 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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