Connector pin, jack contact element and connector terminal assembly

Abstract

The utility model discloses a connector pin, a jack contact element and a connector terminal assembly, the connector pin comprises a first plugging part, a second plugging part and a first connecting part, the second plugging part is connected to the first plugging part, the first connecting part is connected to one end, deviating from the first plugging part, of the second plugging part, and the second plugging part is connected to the jack contact element. The first plugging part and the second plugging part are arranged along the axial direction of the connector pin, and the first plugging part and / or the second plugging part can elastically deform in the radial direction. The jack contact element comprises a first contact part, a second contact part and a second connecting part, the second contact part is connected to one end of the first contact part, the second connecting part is connected to one end, deviating from the first contact part, of the second contact part, and the connector pin is inserted into the jack of the jack contact element; the connector pin is in elastic contact with the second contact part, and the connector pin is in elastic contact with the first contact part.

Description

Technical Field

[0001] This application relates to the field of electrical connection technology, and in particular to a connector pin, a socket contact, and a connector terminal assembly having the connector pin and the socket contact. Background Technology

[0002] Connectors are widely used in various fields, including automobiles, communications, computers, consumer electronics, industry, and transportation. Connector terminals, as key components, are primarily used to transmit current or signals. Existing connector terminals generally include pins and socket contacts, with the pins capable of inserting into or removing from the socket contacts. However, existing pins and socket contacts typically use a single contact pair for mating. This single contact pair offers limited reduction in contact resistance, and it also results in higher temperature rise and poor current carrying capacity. Utility Model Content

[0003] The purpose of this application is to provide a connector terminal with strong overcurrent capability, simple structure, and low manufacturing cost, as well as a connector terminal assembly having said connector terminal.

[0004] This application provides a connector pin, which includes a first insertion portion, a second insertion portion, and a first connecting portion. The second insertion portion is connected to one end of the first insertion portion, and the first connecting portion is connected to one end of the second insertion portion away from the first insertion portion. The first insertion portion and the second insertion portion are arranged along the axial direction of the connector pin, and the first insertion portion is capable of radial elastic deformation and / or the second insertion portion is capable of radial elastic deformation.

[0005] This application also provides a socket contact for mating with a connector pin. The socket contact includes a first contact portion, a second contact portion, and a second connecting portion. The second contact portion is connected to one end of the first contact portion, and the second connecting portion is connected to one end of the second contact portion away from the first contact portion. The socket of the socket contact passes through the first contact portion and the second contact portion. The connector pin is inserted into the socket, and the connector pin has elastic contact with the second contact portion and the first contact portion.

[0006] This application also provides a connector terminal assembly, which includes connector pins and socket contacts, wherein the connector pins and the socket contacts are interlocking.

[0007] When the connector pins and socket contacts of this application are mated together, a first mating portion and a second contact portion elastically contact each other to form one contact pair, and a second mating portion and a first contact portion elastically contact each other to form another contact pair; therefore, the connector pins and socket contacts use double contact pairs to form a mating. Compared with the single contact pair form of the pins and contact assemblies in the prior art, the double contact pair form of the connector pins and socket contacts of this application can reduce contact resistance, improve overcurrent capability, reduce temperature rise, and the connector terminal assembly has fewer parts, a simpler structure, and lower manufacturing cost. Attached Figure Description

[0008] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0009] Figure 1 This is a schematic diagram of the connector terminal assembly provided in the first embodiment of this application.

[0010] Figure 2 yes Figure 1 An exploded view of the connector terminal assembly.

[0011] Figure 3 yes Figure 1 An exploded three-dimensional structural diagram of the connection terminal assembly.

[0012] Figure 4 yes Figure 3 A cross-sectional view of one of the connector pins in the diagram.

[0013] Figure 5 yes Figure 3 A three-dimensional structural diagram of the socket contact element from another perspective.

[0014] Figure 6 yes Figure 5 A cross-sectional view of the socket contact element in the diagram.

[0015] Figure 7 yes Figure 1 A cross-sectional view of the connector terminal assembly.

[0016] Figure 8 yes Figure 3 A three-dimensional structural schematic diagram of another embodiment of the connector pins.

[0017] Figure 9 yes Figure 3 A three-dimensional structural schematic diagram of another embodiment of the connector pins in the diagram.

[0018] Figure 10 yes Figure 3A three-dimensional structural schematic diagram of another embodiment of the socket contact element.

[0019] Figure 11 yes Figure 3 A three-dimensional structural schematic diagram of another embodiment of the socket contact element.

[0020] Figure 12 This is an exploded view of the connector terminal assembly provided in the second embodiment of this application.

[0021] Figure 13 yes Figure 12 A three-dimensional structural diagram of the socket contact component.

[0022] Figure 14 yes Figure 13 A three-dimensional structural diagram of the socket contact element from another perspective.

[0023] Figure 15 yes Figure 13 A cross-sectional view of the socket contact element in the diagram.

[0024] Figure 16 yes Figure 15 A three-dimensional structural diagram of the first contact part in the middle.

[0025] Figure 17 yes Figure 12 A cross-sectional view of the connector pins and socket contacts in the mating state.

[0026] Figure 18 This is a three-dimensional structural diagram of the connector terminal assembly provided in the third embodiment of this application.

[0027] Figure 19 yes Figure 18 An exploded view of the connector terminal assembly.

[0028] Figure 20 yes Figure 19 A three-dimensional structural diagram of the socket contact component.

[0029] Figure 21 yes Figure 20 A three-dimensional structural diagram of the socket contact element from another perspective.

[0030] Figure 22 yes Figure 21 A cross-sectional view of the socket contact element in the diagram.

[0031] Figure 23 yes Figure 18 A cross-sectional view of the connector terminal assembly.

[0032] Figure 24This is a three-dimensional structural diagram of the connector terminal assembly provided in the fourth embodiment of this application.

[0033] Figure 25 yes Figure 24 An exploded three-dimensional structural diagram of the connector terminal assembly.

[0034] Figure 26 yes Figure 25 A side view of the connector terminal assembly.

[0035] Figure 27 yes Figure 25 A three-dimensional structural diagram of the socket contact element from another perspective.

[0036] Figure 28 yes Figure 27 A three-dimensional structural diagram of the socket contact element from another perspective.

[0037] Figure 29 yes Figure 28 One of the cross-sectional views of the socket contact element in the diagram.

[0038] Figure 30 yes Figure 24 One of the cross-sectional views of the connector terminals.

[0039] Figure 31 This is a three-dimensional structural diagram of the connector terminal assembly provided in the fifth embodiment of this application.

[0040] Figure 32 yes Figure 31 An exploded side view of the connector terminal assembly.

[0041] Figure 33 yes Figure 32 A three-dimensional structural diagram of the socket contact component.

[0042] Figure 34 yes Figure 33 A three-dimensional structural diagram of the socket contact element from another perspective.

[0043] Figure 35 yes Figure 34 One of the cross-sectional views of the socket contact element in the diagram.

[0044] Figure 36 yes Figure 31 One of the cross-sectional views of the connector terminal assembly.

[0045] Figure 37 This is a side view of the connector terminal assembly provided in the sixth embodiment of this application.

[0046] Figure 38 yes Figure 37An exploded view of the connector terminal assembly.

[0047] Figure 39 yes Figure 38 A schematic diagram of one of the three-dimensional structures of the connector pins in the diagram.

[0048] Figure 40 yes Figure 38 Another three-dimensional structural diagram of the connector pins in the diagram.

[0049] Figure 41 yes Figure 40 One of the cross-sectional views of the connector pins in the image.

[0050] Figure 42 yes Figure 38 A three-dimensional structural diagram of the socket contact component.

[0051] Figure 43 yes Figure 42 A three-dimensional structural diagram of the socket contact element from another perspective.

[0052] Figure 44 yes Figure 43 One of the cross-sectional views of the socket contact element in the diagram.

[0053] Figure 45 yes Figure 37 One of the cross-sectional views of the connector terminal assembly.

[0054] Figure 46 This is an exploded view of the connector terminal assembly provided in the seventh embodiment of this application.

[0055] Figure 47 yes Figure 46 A three-dimensional structural diagram of the connector pins.

[0056] Figure 48 yes Figure 47 A three-dimensional structural diagram of the connector pins from another perspective.

[0057] Figure 49 yes Figure 47 One of the cross-sectional views of the connector pins in the image.

[0058] Figure 50 yes Figure 46 A three-dimensional structural diagram of the socket contact component.

[0059] Figure 51 yes Figure 45 A three-dimensional structural diagram of the socket contact element from another perspective.

[0060] Figure 52 yes Figure 46 One of the cross-sectional views of the socket contact element in the diagram.

[0061] Figure 53 yes Figure 46 One of the cross-sectional views of the connector pins and socket contacts after they are mated together.

[0062] Figure 54 This is a cross-sectional view of the connector terminal assembly provided in the eighth embodiment of this application.

[0063] Figure 55 yes Figure 54 An exploded view of the connector terminal assembly.

[0064] Figure 56 This is an exploded view of the connector terminal assembly provided in the ninth embodiment of this application.

[0065] Figure 57 yes Figure 56 A three-dimensional structural diagram of the connector pins.

[0066] Figure 58 yes Figure 57 A three-dimensional structural diagram of the connector pins from another perspective.

[0067] Figure 59 yes Figure 58 One of the cross-sectional views of the connector pins in the image.

[0068] Figure 60 yes Figure 56 A three-dimensional structural diagram of the socket contact component.

[0069] Figure 61 yes Figure 60 A three-dimensional structural diagram of the socket contact element from another perspective.

[0070] Figure 62 yes Figure 61 One of the cross-sectional views of the socket contact element in the diagram.

[0071] Figure 63 This is a three-dimensional structural schematic diagram of the connector terminal assembly provided in the tenth embodiment of this application.

[0072] Figure 64 yes Figure 63 A side view of the connector terminal assembly.

[0073] Figure 65 yes Figure 64 An exploded view of the connector terminal assembly.

[0074] Figure 66 yes Figure 65 A three-dimensional structural diagram of the connector pins.

[0075] Figure 67 yes Figure 65 A three-dimensional structural diagram of the socket contact component.

[0076] Figure 68 yes Figure 67 A three-dimensional structural diagram of the socket contact element from another perspective.

[0077] Figure 69 yes Figure 68 One of the cross-sectional views of the socket contact element in the diagram.

[0078] Figure 70 This is a cross-sectional view of the connector terminal assembly provided in the eleventh embodiment of this application.

[0079] Figure 71 yes Figure 70 A cross-sectional view of the socket contact element.

[0080] Figure 72 yes Figure 71 A cross-sectional view of one state of the housing of the socket contact component.

[0081] Figure 73 yes Figure 72 A cross-sectional view of the housing of the socket contact in another state.

[0082] Figure 74 This is a cross-sectional view of the socket contact element provided in the twelfth embodiment of this application.

[0083] Figure 75 This is a three-dimensional structural diagram of the abutment provided in the thirteenth embodiment of this application.

[0084] Figure 76 yes Figure 75 A schematic diagram of the top structure of the abutment component.

[0085] Figure 77 This is a three-dimensional structural diagram of the abutment provided in the fourteenth embodiment of this application.

[0086] Figure 78 yes Figure 77 A schematic diagram of the top structure of the abutment component.

[0087] Figure 79 This is a three-dimensional structural diagram of the abutment provided in the fifteenth embodiment of this application.

[0088] Figure 80 yes Figure 79 A schematic diagram of the side structure of the abutment component.

[0089] Figure 81 This is a three-dimensional structural diagram of the abutment provided in the sixteenth embodiment of this application.

[0090] Figure 82 This is a three-dimensional structural diagram of the abutment provided in the seventeenth embodiment of this application. Detailed Implementation

[0091] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0092] It should be noted that, in this document, the reference to "embodiment" or "implementation" means that a specific feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0093] The terms "first" and "second" appearing in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. It should be noted that, unless otherwise explicitly stated and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0094] Please refer to Figures 1-3The connector terminal assembly 100 provided in the first embodiment of this application includes a connector pin 30 and a socket contact 50, and the connector pin 30 and the socket contact 50 can be inserted into each other; specifically, the connector pin 30 includes a first insertion portion 32, a second insertion portion 34 and a first connecting portion 36, the first insertion portion 32 is connected to one end of the second insertion portion 34, and the first connecting portion 36 is connected to one end of the second insertion portion 34 away from the first insertion portion 32. The first insertion portion 32, the second insertion portion 34 and the first connecting portion 36 are arranged along the axial direction of the connector pin 30, and the first insertion portion 32 can be radially elastically deformed. The socket contact 50 is used in conjunction with the connector pin 30. The socket contact 50 includes a first contact portion 52, a second contact portion 54, and a second connecting portion 56. The second contact portion 54 is connected to one end of the first contact portion 52, and the second connecting portion 56 is connected to the end of the second contact portion 54 opposite to the first contact portion 52. The first contact portion 52, the second contact portion 54, and the second connecting portion 56 are arranged along the axis of the socket contact 50. The socket hole 501 of the socket contact 50 passes through the first contact portion 52, the second contact portion 54, and the second connecting portion 56. The connector pin 30 is inserted into the socket hole 501 of the socket contact 50. The first insertion portion 32 of the connector pin 30 is in elastic contact with the second contact portion 54, and the second insertion portion 34 of the connector pin 30 is in elastic contact with the first contact portion 52.

[0095] The connector terminal assembly 100 of this embodiment can be widely used in various fields such as automobiles, communications, computers, consumer electronics, industry, and transportation. For example, it can be used as a key component in batteries of new energy vehicles, electric bicycles, electric motorcycles, electric scooters, and power tools. Its applications are very wide and are not limited to this example.

[0096] When the connector pin 30 of this application is inserted into the socket 501 of the socket contact 50, the first insertion portion 32 and the second contact portion 54 elastically contact each other to form a contact pair, and the second insertion portion 34 and the first contact portion 52 elastically contact each other to form another contact pair; therefore, the connector pin 30 and the socket contact 50 form a double contact pair. Compared with the single contact pair form of the pins and contact assemblies in the prior art, the double contact pair form of the connector pin 30 and the socket contact 50 in this application can reduce contact resistance, improve overcurrent capability, and reduce temperature rise. In addition, the connector terminal assembly 100 has fewer parts, a simpler structure, and lower manufacturing cost.

[0097] like Figure 3 and Figure 4As shown, the first insertion part 32 is an elastic element, and its outer contour is conical. The outer diameter D1 of the first insertion part 32 near the insertion rod is smaller than the outer diameter D2 of the first insertion part 32 away from the insertion rod, meaning the head of the first insertion part 32 is larger than the root. The head refers to the end away from the insertion rod, and the root refers to the end near the insertion rod. The first insertion part 32 includes multiple first elastic arms 320, and the second insertion part 34 is an insertion rod of equal diameter. One end of each of the multiple first elastic arms 320 is connected to one end of the insertion rod, and the multiple first elastic arms 320 are arranged in a circle around the circumference of the insertion rod at intervals. A clearance groove 321 is formed between every two adjacent first elastic arms 320, and the multiple first elastic arms 320 together form a clearance hole 323. The clearance groove 321 connects to the clearance hole 323, and the clearance hole 323 is coaxial with the insertion rod, so that the multiple first elastic arms 320 can deform uniformly towards the center along the radial direction of the insertion rod. Since there is a clearance groove 321 between two adjacent first elastic arms 320, and multiple first elastic arms 320 form a clearance hole 323, the end of the first elastic arm 320 away from the plug rod can move radially upward along the first plug part 32 and deform elastically, so that multiple first elastic arms 320 can contract or expand radially. Through the deformation of the end of the first plug part 32 away from the plug rod, it can be matched with the plug hole of the same diameter, thereby realizing the elastic contact between the first plug part 32 and the inner wall of the plug hole. In this embodiment, the end of the plug rod away from the first connecting portion 36 is provided with four first elastic arms 320. The four first elastic arms 320 are evenly spaced around the circumference of the plug rod, and a clearance groove 321 is formed between each pair of adjacent first elastic arms 320. The four first elastic arms 320 form a clearance hole 323. The thickness of the first elastic arms 320 gradually increases from the plug rod towards the end away from the first connecting portion 36 along the axial direction of the plug rod. The inner surface of the first elastic arms 320 is parallel to the axial direction of the plug rod, so that the outer diameter D1 of the first plug portion 32 near the plug rod is smaller than the outer diameter D2 of the end away from the plug rod. It can be understood that the connector pin 30 is generally made by machining. In order to make the connector pin 30 deformable, a clearance groove 321 and a clearance hole 323 are usually provided in the middle of the first plug portion 32. The first plug portion 32 has a large head and a small root structure. By deforming the head, it can be matched with a socket of the same diameter, simplifying the socket processing.

[0098] In other embodiments, the second insertion portion 34 may also be a tapered insertion rod.

[0099] Specifically, the first elastic arm 320 is an arc plate, the inner arc surface of which is parallel to the outer circumferential surface of the plug rod, and the outer circumferential arc surface of which is inclined relative to the axis of the plug rod. The outer edge of the first elastic arm 320 away from the plug rod has a guide surface 324, which can be, but is not limited to, a chamfered right angle, a rounded corner, or a conical surface. Optionally, the plug rod is a rod of uniform diameter, and the end face of the plug rod near the first plug portion 32 has a countersunk hole 340. A clearance hole 323 connects to the countersunk hole 340, and the clearance hole 323 and the countersunk hole 340 are coaxial. The clearance groove 321 can extend to near the countersunk hole 340; this ensures that the first elastic arm 320 can deform from the end near the plug rod. The longer the cantilever of the first elastic arm 320, the more beneficial it is to reduce the insertion and extraction force of the connector pin 30. In other embodiments, the plug rod can be a tapered rod. Specifically, the diameter of the tapered rod near the first plug portion 32 is smaller than the diameter near the first connecting portion 36, or the diameter of the tapered rod near the first plug portion 32 is larger than the diameter near the first connecting portion 36. A first fixing protrusion 342 is provided at one end of the outer circumference of the plug rod near the first connecting portion 36. The first fixing protrusion 342 surrounds the circumference of the plug rod. Specifically, the first fixing protrusion 342 can be, but is not limited to, a conical ring or a circular ring. The first fixing protrusion 342 is used to create an interference fit between the connector pin 30 and the mating core, generating a fixing force to prevent the connector pin 30 from rotating circumferentially or moving axially, thus providing a pre-fixing effect for the pin.

[0100] The first connecting portion 36 is used to connect with the wire to transmit current. In this embodiment, the first connecting portion 36 is a soldering cup for soldering with the wire. The plug rod and the crimping cylinder are coaxial, and the outer diameter of the plug rod is smaller than the outer diameter of the crimping cylinder. A positioning platform 362 is formed between the first connecting portion 36 and the plug rod, which acts as a stop step to prevent the connector pin 30 from being excessively pressed into the mating core.

[0101] like Figure 3 and Figures 5-6As shown, the second contact portion 54 is a contact cylinder, and the first contact portion 52 is connected to one end of the contact cylinder. The first contact portion 52 includes a plurality of first spring pieces 520, one end of which is connected to one end of the contact cylinder. The plurality of first spring pieces 520 are arranged in a circle around the circumference of the contact cylinder at intervals, so that the first contact portion 52 can be radially elastically deformed. The space formed by the plurality of first spring pieces 520 and the inner cavity of the contact cylinder form the insertion hole 501 of the insertion contact member 50. There is a clearance groove 521 between each pair of adjacent first spring pieces 520. The plurality of first spring pieces 520 together form one end of the insertion hole 501. The clearance groove 521 communicates with the insertion hole 501. The first insertion portion 32 and the second insertion portion 34 can be inserted into the insertion hole 501 so that the plurality of first spring pieces 520 elastically abut against the second insertion portion 34. In this embodiment, a plurality of first spring pieces 520 are arranged in a circle around the circumference of the contact cylinder at uniform intervals. Specifically, ten first spring pieces 520 are arranged in a circle around the circumference of the contact cylinder at uniform intervals. Understandably, the number of first spring pieces 520 can be selected according to actual needs. The socket contact 50 is integrally formed, the first contact portion 52 is radiating along the axial direction, and the plurality of first spring pieces 520 are evenly distributed around the circumference of the second contact portion 54.

[0102] Optionally, the first spring clip 520 includes a connecting strip 522 and a guide strip 524. One end of the guide strip 524 is connected to one end of the connecting strip 522, and the end of the connecting strip 522 away from the guide strip 524 is connected to the second contact portion 54. The end of the connecting strip 522 near the guide strip 524 is inclined towards the axis of the contact cylinder, and the guide strip 524 extends inclinedly from the connecting strip 522 towards the axis away from the contact cylinder. Multiple guide strips 524 are arranged radially. The connection between each connecting strip 522 and the corresponding guide strip 524 forms a contact segment 525. Multiple contact segments 525 surround a first throat hole 526. The inner diameter of the first throat hole 526 is larger than the inner diameter of the second contact portion 54, and the inner diameter of the first throat hole 526 is smaller than the outer diameter of the second insertion portion 34. There is a rounded transition between the connecting strip 522 and the guide strip 524. The first contact portion 52 has an inlet 527 at the end of the first throat hole 526 opposite to the second contact portion 54. The inlet 527 is flared, which facilitates the connection of the connector pins 30 and the socket contact 50 during mating by spreading the multiple first spring pieces 520, thereby achieving contact between the contact section 525 and the second plug-in portion 34. The connecting strip 522 is used to provide a retaining force for the contact section 525 to abut against the second plug-in portion 34. The length of the connecting strip 522 in the axial direction of the second contact portion 54 is directly proportional to the retaining force. That is, when the connecting strip 522 is shorter, the retaining force provided by the first spring pieces 520 is larger, and when the connecting strip 522 is longer, the retaining force provided by the first spring pieces 520 is smaller.

[0103] Optionally, the second contact portion 54 is cylindrical, with the same inner diameter at both opposite ends. The middle portion of the second contact portion 54 is recessed into its inner cavity to form a contact neck 542, the inner diameter D3 of which is smaller than the inner diameter of the first throat hole 526. In other words, the middle portion of the contact cylinder is recessed into its inner cavity to form the contact neck 542, the inner diameters at both opposite ends of the contact cylinder are larger than the inner diameter D3 of the contact neck 542, the inner diameter D3 of the contact neck 542 is smaller than the inner diameter of the first throat hole 526, the inner diameter of the first throat hole 526 is larger than the outer diameter of the first insertion portion 32 away from the insertion rod, and the inner diameter of the contact neck 542 is smaller than the outer diameter of the first insertion portion 32 away from the insertion rod. Inclined surfaces 544 are provided at both axially opposite ends of the contact neck 542 to facilitate the insertion of the first elastic arm 320 into the inner cavity of the contact neck 542 via the inclined surfaces 544. In other embodiments, the inner diameter of the second contact portion 54 near the first contact portion 52 is slightly smaller than the inner diameter of the second contact portion 54 away from the first contact portion 52. The outer diameter of the first insertion portion 32 at the end of the guide surface 324 away from the insertion rod is smaller than the inner diameter D3 of the contact neck 542, and the outer diameter of the first insertion portion 32 at the end of the guide surface 324 near the insertion rod is larger than the inner diameter D3 of the contact neck 542. When the first insertion portion 32 is inserted into the inner cavity of the contact neck 542, the guide surface 324 slides against the inclined surface 544 to guide the first elastic arm 320 into the inner cavity of the contact neck 542. As the first insertion portion 32 penetrates deeper into the inner cavity of the contact neck 542, the plurality of first elastic arms 320 gradually contract toward the center until the head diameter of the first insertion portion 32 is equal to the inner diameter D3 of the contact neck 542, thereby realizing the insertion of the first insertion portion 32.

[0104] The socket contact 50 also includes a positioning part 57 connected between the second contact part 54 and the second connecting part 56. Specifically, the second connecting part 56 is cylindrical, and the positioning part 57 is a stop ring connected between the second contact part 54 and the second connecting part 56. The stop ring is used to generate a fixing force by interfering with the travel of the socket contact 50 and the rubber core, so that the socket contact 50 is fixedly connected to the rubber core, and can prevent the socket contact 50 from rotating circumferentially or moving axially. The second connecting part 56 is used to realize the electrical connection between the socket contact 50 and the wire, thereby transmitting current. The second connecting part 56 includes a connecting cylinder 561, a cover plate 563, and a connecting piece 565. The connecting cylinder 561 is a cylindrical shape with a uniform inner diameter. One end of the connecting cylinder 561 along its axial direction is fixedly connected to the positioning part 57. The connecting piece 565 and the cover plate 563 are both fixedly connected to the end of the connecting cylinder 561 opposite to the connecting cylinder 561. The inner cavity of the connecting cylinder 561 communicates with the inner cavity of the second contact part 54. In this embodiment, the connecting cylinder 561 and the second contact part 54 are coaxial. When the socket contact 50 is installed in the glue core, the positioning part 57 is positioned with the glue core. The outer peripheral surface of the cover plate 563 fits against the inner peripheral surface of the connecting cylinder 561 to seal the inner cavity of the connecting cylinder 561, so that the socket contact 50 will not leak glue into the second contact part 54 when dispensing or wrapping glue.

[0105] The connecting piece 565 is arc-shaped and coaxial with the connecting cylinder 561. The outer circumferential surface of the connecting piece 565 is flush with the outer circumferential surface of the connecting cylinder 561. The inner circumferential surface of the connecting piece 565 has multiple anti-detachment protrusions 567, each extending circumferentially along the connecting piece 565, and the multiple anti-detachment protrusions 567 are spaced apart along the axial direction of the connecting cylinder 561. When the connecting piece 565 is welded and fixed to the wire, current transmission can be achieved, and the anti-detachment protrusions 567 on the connecting piece 565 can increase the welding force between the connecting piece 565 and the wire. In other embodiments, the inner circumferential surface of the connecting piece 565 may also have multiple grooves, each extending circumferentially along the connecting piece 565, and the multiple grooves are spaced apart along the X-axis.

[0106] like Figure 3 and Figure 7As shown, when the connector pin 30 is inserted into the socket contact 50, the first insertion portion 32 of the connector pin 30 is inserted into the socket 501 from the inlet 527 of the socket contact 50, so that the first insertion portion 32 passes through the first throat hole 526, and the guide surface 324 slides against the inclined surface 544 and enters the inner cavity of the contact neck 542. The inner peripheral surface of the contact neck 542 slides against the guide surface 324 of the first elastic arm 320, so that the first elastic arm 320 elastically deforms, and the first insertion portion 32 moves away from the insertion rod. One end gradually contracts towards the center until the diameter of the end of the first insertion part 32 away from the insertion rod is equal to the inner diameter of the insertion contact neck 542, so that the first contact part 52 is inserted into the inner cavity of the contact neck 542, and the first insertion part 32 makes elastic contact with the inner peripheral surface of the contact neck 542; at the same time, the outer peripheral surface of the insertion rod slides against the guide strip 524, causing the first spring piece 520 to deform elastically, and the multiple first spring pieces 520 of the first contact part 52 expand outward until the multiple contact segments 525 make elastic contact with the outer peripheral surface of the insertion rod.

[0107] In this application, the first insertion portion 32 and the second contact portion 54 of the connector pin 30 are in elastic contact with the inner peripheral surface of the contact neck 542 through the first spring 520, and the outer peripheral surface of the insertion rod is in elastic contact with the multiple first springs 520 of the first contact portion 52. This allows the connector pin 30 and the socket contact member 50 to have a double contact pair, which can reduce the contact resistance, improve the overcurrent capability, and obtain a lower coupling height and lower temperature rise. In addition, the connector terminal assembly 100 has fewer parts, a simpler structure, and lower manufacturing cost.

[0108] like Figure 8 As shown, the structure of the connector pin 30a in another embodiment of this application is similar to that of the connector pin 30 in the first embodiment. The difference is that the structure of the first connecting part 36a of the connector pin 30a is slightly different from that of the first connecting part 36 of the connector pin 30. Specifically, the first connecting part 36a is a connecting post. The end face of the connecting post facing away from the plug rod is provided with a threaded hole. The wire is first connected to an adapter crimp terminal, and then the adapter crimp terminal is locked to the threaded hole by a screw to realize the connection between the connector pin 30a and the wire, thereby transmitting current.

[0109] like Figure 9As shown, the structure of the connector pin 30b in another embodiment of this application is similar to that of the connector pin 30 in the first embodiment. The difference is that the structure of the first connecting part 36b of the connector pin 30b is slightly different from that of the first connecting part 36 of the connector pin 30. Specifically, the first connecting part 36b is a first connecting sleeve. The end of the first connecting sleeve opposite to the plug rod is provided with a connecting hole 363, and the end of the first connecting sleeve near the plug rod is provided with an electroplating process hole 364. The electroplating process hole 364 communicates with the connecting hole 363. The wire is inserted into the connecting hole 363 and the wire and the connecting sleeve are pressed together by a crimping tool to achieve electrical connection and thus transmit current.

[0110] like Figure 10 As shown, the structure of the socket contact 50a in another embodiment of this application is similar to that of the socket contact 50 in the first embodiment. The difference is that the specific structure of the second connecting portion 56a of the socket contact 50a is slightly different from that of the second connecting portion 56 of the socket contact 50. Specifically, in this embodiment, the connecting piece 565a of the second connecting portion 56a adopts a wire clamping foot. The wire is placed in the wire clamping foot, and the wire clamping foot is squeezed by a tool to realize the connection between the wire clamping foot and the wire, thereby transmitting current.

[0111] like Figure 11 As shown, the structure of the socket contact 50b in another embodiment of this application is similar to that of the socket contact 50 in the first embodiment. The difference is that the specific structure of the second connecting portion 56b of the socket contact 50b is slightly different from that of the second connecting portion 56 of the socket contact 50. Specifically, in this embodiment, the connecting piece 565b of the second connecting portion 56b adopts a rectangular welding plate, which is connected to the wire by ultrasonic welding to transmit current.

[0112] In other embodiments, the connecting piece of the second connecting part 56 may also be, but is not limited to, a solder cup, which is connected to the wire by soldering to transmit current.

[0113] Please refer to the following: Figures 12-15The structure of the connector terminal assembly 100b provided in the second embodiment of this application is similar to that of the connector terminal assembly 100 provided in the first embodiment. The structure of the connector pin in the second embodiment is the same as that of the connector pin in the first embodiment. The difference is that the structure of the socket contact 50c in the second embodiment is slightly different from that of the socket contact 50 in the first embodiment. Specifically, the first contact portion 52a of the socket contact 50c in the second embodiment includes a first contact cylinder 528 with an equal inner diameter and an elastic first contact portion 528. A first contact ring 529 is fitted with a first contact cylinder 528. The middle portion of the first contact ring 529 is recessed into its inner cavity to form a first contact neck 529a. A second contact portion 54a is a second contact cylinder with the same inner diameter. The second contact cylinder is coaxial with the first contact cylinder 528. The throat diameter of the first contact neck 529a is larger than the inner diameter of the second contact cylinder. The inner diameter of the second contact portion 54a is smaller than the outer diameter of the end of the first insertion portion 32 away from the second contact portion 54. The inner diameter of the first contact neck 529a is smaller than the outer diameter of the second insertion portion 34. When the connector pin 30 is inserted into the first contact ring 529 and the second contact cylinder of the socket contact member 50c, the first insertion portion 32 makes elastic contact with the inner circumferential surface of the second contact portion 54a, and the first contact neck 529a makes elastic contact with the outer circumferential surface of the second insertion portion 34, thereby realizing a double contact pair between the connector pin 30 and the socket contact member 50c.

[0114] Optionally, the inner circumferential surface of the first contact cylinder 528 is provided with a mounting groove 5282, which surrounds the circumference of the first contact cylinder 528. The first contact ring 529 is positioned in the mounting groove 5282. There is a clearance gap 5292 between the outer circumferential surface of the first contact neck 529a and the outer circumferential surface of the first contact cylinder 528 to facilitate the elastic deformation of the first contact neck 529a. The outer circumferential surface of the first contact cylinder 528 is coplanar with the outer circumferential surface of the second contact cylinder. A positioning cylinder 5284 is provided at the end of the first contact cylinder 528 away from the second contact portion 54a. The positioning cylinder 5284 is coaxial with the first contact cylinder 528. When the first contact ring 529 is positioned in the mounting groove 5282, the positioning cylinder 5284 is bent into its inner cavity to position the first contact ring 529 to the first contact cylinder 528, thereby preventing the connector pin from pulling the first contact ring 529 out during insertion and removal.

[0115] like Figure 16As shown, the first contact ring 529 includes two first connecting rings 5293 spaced apart axially and a plurality of first elastic strips 5294. The two first connecting rings 5293 are coaxial, and the opposite ends of the plurality of first elastic strips 5294 are respectively connected to the two first connecting rings 5293. The plurality of first elastic strips 5294 are arranged in a circle around the circumference of the first connecting rings 5293 at intervals. The middle part of each first elastic strip 5294 bends towards the axis of the first connecting ring 5293, and the middle parts of the plurality of first elastic strips 5294 form a first contact neck 529a. In this embodiment, the plurality of first elastic strips 5294 are arranged in a circle around the circumference of the first connecting rings 5293 at uniform intervals. The spacing between two adjacent first elastic strips 5294 is greater than or equal to 0.6 times the thickness of the first elastic strip 5294 and less than or equal to 2 times the thickness of the first elastic strip 5294, which can improve the current carrying capacity. The smaller the spacing between two adjacent first elastic strips 5294, the better the current carrying capacity of the socket contact 50c. In its natural state, the outer diameter of the first connecting ring 5293 is slightly larger than or equal to the inner diameter of the mounting groove 5282 to ensure that the first contact ring 529 can be firmly positioned within the inner cavity of the first contact cylinder 528. Specifically, since the first contact ring 529 will spring back after being rolled, a gap will be formed at the mating point. When the first contact ring 529 is inserted into the first contact cylinder 528, it needs to be compressed first, at which point the gap will become smaller. After insertion, the first contact ring 529 will naturally spring back and fit against the first contact cylinder 528. In this embodiment, multiple first spring strips 5294 are arranged in a spiral around the circumference of the first connecting ring 5293, such that the throat diameter of the first contact ring 529 is smaller than the inner diameter of the first connecting ring 5293. The throat diameter of the first contact ring 529 refers to the minimum inner diameter of the first contact ring 529. The minimum inner diameter of the first contact ring 529 can be the inner diameter at the center of the first contact ring 529, or it can be the inner diameter near or far from the center of the first contact ring 529.

[0116] Optionally, the end face of the first connecting ring 5293 opposite to the first elastic bar 5294 is provided with a plurality of first operating grooves 5295. The first operating grooves 5295 penetrate the inner and outer circumferential surfaces of the first connecting ring 5293, and the plurality of first operating grooves 5295 are arranged circumferentially around the first connecting ring 5293 at intervals. During the processing of the first contact ring 529 in this embodiment, a torsion tool (servo motor or mechanical transmission mechanism) is used to position both first connecting rings 5293, that is, the torsion tool is positioned in the first operating grooves 5295 of the two first connecting rings 5293 respectively. Then, the torsion tool drives the two first connecting rings 5293 to rotate in opposite directions, so that the plurality of first elastic bars 5294 of the first contact ring 529 present a spiral structure. By controlling the torsion angle of the torsion tool, different throat diameters can be obtained, and the torsion angle ranges from 10° to 80°. The torsion angle of the first contact ring 529 with a larger throat diameter is set to be relatively large, and the torsion angle of the terminal with a smaller throat diameter is set to be relatively small. The throat diameter of the first contact ring 529 determines the magnitude of its clamping force when it contacts the terminal to be mated. The larger the torsion angle, the greater the clamping force. A larger clamping force allows for better contact between the first contact ring 529 and the second insertion portion 34, thereby resulting in lower contact resistance.

[0117] like Figures 12-15 As shown, the structure of the second connecting portion 56c of the socket contact 50c is similar to that of the second connecting portion 56 of the socket contact 50 in the first embodiment, except that the second connecting portion 56c is a first connecting sleeve, one end of which is connected to one end of a second contact cylinder. The first connecting sleeve and the second contact cylinder are coaxial, and the wire is inserted into the inner cavity of the first connecting sleeve and fixed by welding. The second connecting portion 56c is provided with a second welding hole 566. The wire is inserted into the inner cavity of the second connecting portion 56c and welded to the second connecting portion 56c through the second welding hole 566. A positioning portion 57 is provided between the second contact portion 54a and the second connecting portion 56c. When the socket contact 50c is installed in the glue core, the positioning portion 57 is positioned with the glue core. In this embodiment, the positioning portion 57 is a positioning protrusion ring that surrounds the second connecting portion 56c in a circumferential direction.

[0118] like Figure 12 and Figure 17As shown, when the connector pin 30 is inserted into the socket contact 50c, the first insertion portion 32 of the connector pin 30 is inserted into the first contact cylinder 528 of the socket contact 50c, so that the first insertion portion 32 passes through the inner cavity of the first contact neck 529a until the first insertion portion 32 is inserted into the inner cavity of the second contact portion 54a, so that the outer peripheral surface of the second insertion portion 34 slides against the plurality of first elastic strips 5294, and the plurality of first elastic strips 5294 elastically deform and move towards the clearance gap 5292 until the plurality of first elastic strips 5294 elastically contact the outer peripheral surface of the plug rod; at the same time, the ends of the plurality of first elastic arms 320 away from the plug rod slide against the inner cavity wall of the second contact portion 54a, so that the ends of the plurality of first elastic arms 320 away from the plug rod gradually contract towards the center until the first insertion portion 32 is completely inserted into the inner cavity of the second contact portion 54a, realizing the elastic contact between the first insertion portion 32 and the second contact portion 54a.

[0119] In this application, the first insertion portion 32 of the connector pin 30 and the second contact portion 54a are in elastic contact through the first elastic arm 320 and the inner peripheral surface of the second contact portion 54a, and the outer peripheral surface of the insertion rod is in elastic contact with a plurality of first spring bars 5294. This allows the connector pin 30 and the socket contact 50c to have a double contact pair, which can reduce contact resistance, improve overcurrent capability, and reduce temperature rise. In addition, the connector terminal assembly 100 has fewer parts, a simpler structure, and lower manufacturing cost.

[0120] Please refer to the following: Figures 18-23The structure of the connector terminal assembly 100c provided in the third embodiment of this application is similar to that of the connector terminal assembly 100b provided in the second embodiment. The structure of the connector pin in the third embodiment is the same as that of the connector pin in the second embodiment, and will not be described again here. The difference is that the structure of the socket contact 50d in the third embodiment is slightly different from that of the socket contact 50c in the second embodiment. Specifically, the socket contact 50d in the third embodiment also includes a first contact portion 52a, a second contact portion 54a, and a second connecting portion 56d. The structure of the first contact portion 52a in the third embodiment is the same as that of the first contact portion in the second embodiment, that is, the first... The contact portion 52a includes a first contact cylinder 528 and an elastic first contact ring 529. The first contact cylinder 528 is sleeved on the first contact ring 529, and the middle part of the first contact ring 529 is recessed into its inner cavity to form a first contact neck 529a. The structure of the second contact portion 54a in the third embodiment is the same as that in the second embodiment, that is, the second contact portion 54a is a second contact cylinder. The second contact cylinder is coaxial with the first contact cylinder 528. The throat diameter of the first contact neck 529a is larger than the inner diameter of the second contact cylinder. The inner diameter of the second contact portion 54a is smaller than the outer diameter of the end of the first insertion portion 32 away from the second contact portion 54a. The inner diameter of the first contact neck 529a is smaller than the outer diameter of the insertion rod. A second fixing protrusion 545 is provided at the end of the outer peripheral surface of the second contact portion 54a away from the first contact cylinder 528. The second fixing protrusion 545 surrounds the circumference of the second contact portion 54a. Specifically, the second fixing protrusion 545 can be, but is not limited to, a conical ring or a circular ring. The second fixing protrusion 545 is used to generate a fixing force by interfering with the travel of the rubber core that mates with the socket contact 50d, which can prevent the socket contact 50d from rotating circumferentially or moving axially.

[0121] The structure of the second connecting part 56d in the third embodiment is slightly different from that in the second embodiment. Specifically, the second connecting part 56d in the third embodiment is a wire crimping cylinder, which connects to the wire through crimping. This crimping can be, but is not limited to, spot crimping, pit crimping, or hexagonal crimping. The plug rod and the wire crimping cylinder are coaxial, and the outer diameter of the plug rod is smaller than the outer diameter of the wire crimping cylinder. The wire crimping cylinder is coaxial with the second contact part 54a. A retaining groove 562 is provided on the outer circumferential surface of the wire crimping cylinder to form a positioning part 57 on the outer circumferential surface of the wire crimping cylinder. When the plug contact 50d is installed in the glue core, the positioning part 57 and the retaining groove 562 are both positioned with the glue core. The inner cavity of the second contact part 54a away from the first contact cylinder 528 is closed by the second connecting part 56d, so that the plug contact 50d will not leak glue into the inner cavity of the second contact part 54a when dispensing or wrapping glue.

[0122] The insertion method of the connector pin 30 and the socket contact 50d in the third embodiment is the same as that in the second embodiment, and will not be described again here.

[0123] In this application, the first insertion portion 32 of the connector pin 30 and the second contact portion 54a are in elastic contact through the first elastic arm 320 and the inner peripheral surface of the second contact portion 54a, and the outer peripheral surface of the insertion rod is in elastic contact with a plurality of first spring bars 5294. This allows the connector pin 30 and the socket contact 50d to have a double contact pair, which can reduce contact resistance, improve overcurrent capability, and reduce temperature rise. Furthermore, the connector terminal assembly 100c has fewer parts, a simpler structure, and lower manufacturing cost.

[0124] Please refer to the following: Figures 24-30The structure of the connector terminal assembly 100d provided in the fourth embodiment of this application is similar to that of the connector terminal assembly 100 provided in the first embodiment. The structure of the connector pin in the fourth embodiment is the same as that of the connector pin in the first embodiment, and will not be described again here. The difference is that the structure of the socket contact 50e in the fourth embodiment is slightly different from that of the socket contact 50 in the first embodiment. That is, the socket contact 50e in the fourth embodiment uses a guide ring 5201 instead of the guide strip 524 of the socket contact in the first embodiment. Specifically, the fourth embodiment... The first contact portion 52b includes a plurality of first spring pieces 520a and a guide ring 5201. One end of each of the first spring pieces 520a is connected to one end of the second contact portion 54. The first spring pieces 520a are arranged in a circle around the second contact portion 54 at intervals. The guide ring 5201 is connected to the end of the first spring pieces 520a away from the contact cylinder. The guide ring 5201 is coaxial with the second contact portion 54. The end of each first spring piece 520a away from the second contact portion 54 is inclined toward the axis of the guide ring 5201. A clearance groove 521 is formed between each pair of adjacent first spring pieces 520a. A second throat hole 5203 is formed at the end of the guide ring 5201 near the first spring piece 520a, and a guide hole 5204 is formed at the end of the guide ring 5201 away from the first spring piece 520a. The inner diameter of the second throat hole 5203 is smaller than the inner diameter of the guide hole 5204. The inner diameter of the second throat hole 5203 is slightly smaller than the outer diameter of the first insertion part 32 away from the insertion rod end. The inner diameter of the second throat hole 5203 is equal to or slightly smaller than the outer diameter of the insertion rod. The inner diameter of the guide hole 5204 away from the first spring piece 520a is larger than the outer diameter of the first insertion part 32 away from the second insertion part 34. In this embodiment, the guide ring 5201 is trumpet-shaped and includes a guide ring 5205 and a connecting ring 5206. The connecting ring 5206 is connected to one end of the guide ring 5205. The connecting ring 5206 and the guide ring 5205 are coaxial. The ends of the multiple first spring pieces 520a away from the second contact part 54 are respectively connected to the ends of the connecting ring 5206 away from the guide ring 5205. The inner diameter of the guide ring 5205 gradually increases along its axial direction away from the end of the connecting ring 5206. When the connector pin 30 is inserted into the first contact portion 52b and the second contact portion 54 of the socket contact 50e, the first insertion portion 32 and the inner peripheral surface of the second contact portion 54 are in elastic contact, and the first contact portion 52b and the outer peripheral surface of the insertion rod are in elastic contact, so as to realize the double contact pair between the connector pin 30 and the socket contact 50e.

[0125] like Figures 24-26 and Figure 30As shown, when the connector pin 30 is inserted into the socket contact 50e, the first insertion portion 32 slides from the guide hole 5204 of the guide ring 5201 of the socket contact 50e, and the guide surfaces 324 of the plurality of first elastic arms 320 slide against the inner circumferential surface of the guide ring 5205, causing the ends of the plurality of first elastic arms 320 away from the insertion pin to gradually retract towards the center until the first insertion portion 32 passes through the second throat hole 5203; the connector pin 30 is then inserted into the socket contact 50e until the plurality of first elastic arms 320... The insertion into the inner cavity of the contact neck 542 causes the ends of the multiple first elastic arms 320 away from the insertion rod to gradually retract towards the center until the first elastic arms 320 elastically abut against the inner circumferential surface of the contact neck 542, achieving elastic contact between the first insertion part 32 and the inner circumferential surface of the contact neck 542; at the same time, the guide ring 5201 is sleeved on the insertion rod, and the outer circumferential surface of the insertion rod abuts against the multiple first spring pieces 520a, causing the multiple first spring pieces 520a to elastically deform and expand outward until the first contact part 52b elastically contacts the outer circumferential surface of the insertion rod.

[0126] In this application, the first insertion portion 32 and the second contact portion 54 of the connector pin 30 are in elastic contact with the inner circumferential surface of the contact neck 542 via a first elastic arm 320, and the outer circumferential surface of the insertion rod is in elastic contact with a plurality of first spring pieces 520a of the first contact portion 52. This allows the connector pin 30 and the socket contact 50e to have a double contact pair, which reduces contact resistance, improves overcurrent capability, and results in lower temperature rise. Furthermore, the connector terminal assembly 100d has fewer parts, a simpler structure, and lower manufacturing costs. Secondly, the processing of the socket contact 50e does not require mold making, further reducing manufacturing costs.

[0127] Please refer to the following: Figures 31-36The structure of the connector terminal assembly 100e provided in the fifth embodiment of this application is similar to that of the connector terminal assembly 100 provided in the first embodiment. The structure of the connector pin 30 in the fifth embodiment is the same as that of the connector pin in the first embodiment. The difference is that the structure of the socket contact 50f in the fifth embodiment is slightly different from that of the socket contact in the first embodiment. Specifically, the first contact portion 52c of the socket contact 50f in the fifth embodiment includes a plurality of first spring pieces 520b, and the second contact portion 54a is a contact cylinder with a uniform inner diameter. One end of each of the plurality of first spring pieces 520b is connected to one end of the second contact portion 54a. The plurality of first spring pieces 520b are arranged in a circle around the circumference of the contact cylinder at intervals. There is a clearance groove 521 between each pair of adjacent first spring pieces 520b. The end of the first spring piece 520b away from the contact cylinder is inclined toward the axis of the contact cylinder. The inner diameter formed by the end of the plurality of first spring pieces 520b away from the second contact portion 54a is smaller than the inner diameter formed by the end of the plurality of first spring pieces 520b close to the second contact portion 54a. In this embodiment, a plurality of first spring pieces 520b are arranged in a circle around the circumference of the contact cylinder at uniform intervals, and each first spring piece 520b is an arc-shaped piece. The ends of the plurality of first spring pieces 520b away from the second contact portion 54a form a first throat hole 526c. The inner diameter of the first throat hole 526c is larger than the inner diameter of the second contact portion 54a, and the first throat hole 526c is smaller than the outer diameter of the second insertion portion 34.

[0128] A second fixing protrusion 545 is provided at the end of the outer peripheral surface of the second contact portion 54a away from the first spring piece 520b. The second fixing protrusion 545 surrounds the second contact portion 54a in a circumferential manner. Specifically, the second fixing protrusion 545 can be, but is not limited to, a conical ring or a circular ring. The second fixing protrusion 545 is used to generate a fixing force by interfering with the travel of the rubber core that mates with the socket contact member 50f, which can prevent the socket contact member 50f from rotating circumferentially or moving axially.

[0129] The structure of the second connecting part 56d in the fifth embodiment is slightly different from that in the first embodiment. Specifically, the second connecting part 56d in the fifth embodiment is a wire crimping cylinder, which connects to the wire through crimping. This crimping can be, but is not limited to, spot crimping, pit crimping, or hexagonal crimping. The plug rod and the wire crimping cylinder are coaxial, and the outer diameter of the plug rod is smaller than the outer diameter of the wire crimping cylinder. The wire crimping cylinder is coaxial with the second contact part 54a. The outer circumferential surface of the wire crimping cylinder is provided with at least one pair of snap-fit ​​grooves 562 to form a positioning part 57 on the outer circumferential surface of the wire crimping cylinder. When the plug contact 50f is installed in the glue core, the positioning part 57 and the snap-fit ​​grooves 562 are both positioned with the glue core. The inner cavity of the second contact part 54a away from the first spring piece 520b is closed by the second connecting part 56d, so that the plug contact 50f will not leak glue into the inner cavity of the second contact part 54f when dispensing or wrapping glue.

[0130] like Figures 37-44 As shown, the structure of the connector terminal assembly 100f provided in the sixth embodiment of this application is similar to the structure of the connector terminal assembly 100 provided in the first embodiment. The difference is that the structure of the connector pin 30c in the sixth embodiment is slightly different from that of the connector pin in the first embodiment, and the structure of the socket contact 50g in the sixth embodiment is slightly different from that of the socket contact 50 in the first embodiment. Specifically, the first connecting part 36e has a first connecting sleeve, one end of the first connecting part 36e is connected to the end of the second plug-in part 34 away from the first plug-in part 32, and the wire is inserted into the first connecting sleeve and fixed by welding to transmit current. The first connecting portion 36e includes a positioning post 3681, a first connecting sleeve 3682, and a positioning ring 3684. One end of the positioning post 3681 is connected to the end of the second insertion portion 34 opposite to the first insertion portion 32, and one end of the first connecting sleeve 3682 is connected to the end of the positioning post 3681 opposite to the second insertion portion 34. The second insertion portion 34, the positioning post 3681, and the first connecting sleeve 3682 are coaxial. The outer diameter of the positioning post 3681 is larger than the outer diameter of the second insertion portion 34, so as to form a first positioning step between the positioning post 3681 and the second insertion portion 34. The outer diameter of the first connecting sleeve 3682 is larger than the outer diameter of the positioning post 3681, forming a second positioning step between the first connecting sleeve 3682 and the positioning post 3681. A positioning ring 3684 protrudes from the outer circumferential surface of the first connecting sleeve 3682 near the positioning post 3681. The first positioning step, the second positioning step, and the positioning ring 3684 are used to create an interference fit between the connector pin 30c and the core, generating a fixing force to secure the connector pin 30c to the core and prevent circumferential rotation or axial movement of the connector pin 30c. The first connecting sleeve 3682 has a first welding hole 366. A wire is inserted into the inner cavity of the first connecting sleeve 3682 and welded to the connector pin 30c through the first welding hole 366.

[0131] like Figures 37-38 and Figures 42-44As shown, the socket contact 50g in the sixth embodiment includes an elastic first contact portion 52d, a second contact portion 54c, and a second connecting portion 56d. One end of the second contact portion 54c is connected to the first contact portion 52d, and one end of the second connecting portion 56d is connected to the end of the second contact portion 54c that is away from the first contact portion 52d. The second contact portion 54c is a contact cylinder, the second connecting portion 56d is a connecting cylinder, and the first contact portion 52d includes a plurality of first spring pieces 520c. One end of each of the plurality of first spring pieces 520c is connected to one end of the contact cylinder. The plurality of first spring pieces 520c are arranged in a circle around the circumference of the contact cylinder at intervals. When the connector pin 30c is inserted into the first contact portion 52d and the second contact portion 54c of the socket contact member 50g, the first insertion portion 32 and the inner circumferential surface of the second contact portion 54c are in elastic contact, that is, the plurality of first elastic arms 320 respectively elastically abut against the inner circumferential surface of the contact cylinder, and the first contact portion 52d is in elastic contact with the outer circumferential surface of the insertion rod, that is, the plurality of first spring pieces 520c respectively elastically contact the outer circumferential surface of the insertion rod, so as to realize the double contact pair between the connector pin 30c and the socket contact member 50g.

[0132] In this embodiment, when the connector pin 30c and the socket contact 50g are inserted into each other, the first insertion portion 32 and the second contact portion 54c elastically contact each other to form one contact pair, and the first contact portion 52d and the insertion rod elastically contact each other to form another contact pair; therefore, the connector pin 30c and the socket contact 50g form a double contact pair. Compared with the single contact pair form of the pins and contact assemblies in the prior art, the double contact pair form of the connector pin 30c and the socket contact 50g in this application can reduce contact resistance, improve overcurrent capability, and reduce temperature rise. Furthermore, the connector terminal assembly 100f has fewer parts, a simpler structure, and lower manufacturing cost. In addition, the insertion and extraction force between the connector pin 30c and the socket contact 50g in this embodiment is larger, and the insertion and extraction life is longer. Also, the spring throat connection provides a certain strength and makes it less prone to damage.

[0133] Optionally, the first spring piece 520c is an arc-shaped piece, and multiple arc-shaped pieces are arranged around the circumference of the second contact portion 54c to form a circular insertion hole 501. The gap between each pair of adjacent first spring pieces 520c is connected to the insertion hole 501. The inner diameter of the first contact portion 52d is larger than the inner diameter of the second contact portion 54c, that is, the inner diameter of the insertion hole 501 is larger than the inner diameter of the contact cylinder, the inner diameter of the insertion hole 501 is larger than the outer diameter of the first insertion portion 32, the inner diameter of the insertion hole 501 is smaller than the outer diameter of the insertion rod, and the outer diameter of the first insertion portion 32 is smaller than the inner diameter of the second contact portion 54c. The outer diameter of the second connecting portion 56e is larger than the outer diameter of the second contact portion 54c to form a positioning step between the second connecting portion 56e and the second contact portion 54c. The positioning portion 57 is a positioning ring provided on the outer peripheral surface of the second connecting portion 56e near the end of the second contact portion 54c. Both the positioning step and the positioning ring are used for positioning with the rubber core.

[0134] like Figures 37-38 and Figure 45 As shown, when the connector pin 30c is inserted into the socket contact 50g, the first insertion portion 32 of the connector pin 30c is inserted into the socket 501 of the socket contact 50c, so that the first insertion portion 32 passes through the socket 501 and is inserted into the inner cavity of the second contact portion 54c. The guide surface 324 of the first elastic arm 320 slides against the inner peripheral surface of the second contact portion 54c, causing the first elastic arm 320 to elastically deform. The end of the first insertion portion 32 away from the insertion rod gradually contracts towards the center. The first insertion part 32 is inserted into the inner cavity of the second contact part 54c; at the same time, the outer peripheral surface of the insertion rod slides against the plurality of first spring pieces 520c of the first contact part 52d, so that the first spring pieces 520c elastically deform the first insertion part 32 and elastically contact the inner peripheral surface of the contact neck 542; at the same time, the outer peripheral surface of the insertion rod slides against the guide bar 524, so that the plurality of first spring pieces 520c expand outward and elastically deform until the plurality of first spring pieces 520c elastically contact the outer peripheral surface of the insertion rod.

[0135] Please see Figures 46-52The connector terminal assembly 100g provided in the seventh embodiment of this application has a structure similar to that of the connector terminal assembly provided in the first embodiment, except that: the structure of the connector pin 30d in the seventh embodiment is slightly different from that of the connector pin in the first embodiment, and the structure of the socket contact 50h is slightly different from that of the socket contact in the first embodiment; specifically, the connector pin 30d in the seventh embodiment includes a first insertion portion 32a, a second insertion portion 34a, and a first connecting portion 36. The first insertion portion 32a is a first insertion rod with a constant outer diameter, and the second insertion portion 34a can be radially elastically deformable. Specifically, the second insertion portion 34a includes a second insertion rod 343 and a part disposed on the second insertion rod 34. 3. An elastic element 344 on the outer peripheral surface, which can elastically deform along the radial direction of the second insertion rod 343; one end of the second insertion rod 343 is connected to one end of the first insertion part 32a, and one end of the first connecting part 36 is connected to the end of the second insertion rod 343 away from the first insertion part 32a. The first insertion rod, the second insertion rod 343 and the first connecting part 36 are coaxial; the first contact part 52e is a first contact cylinder with a constant inner diameter, and the second contact part 54d is an elastic second contact ring. One end of the first contact part 52e is connected to one end of the second contact ring, and one end of the second connecting part 56 is connected to the end of the second contact part 54d away from the first contact part 52e. The first contact cylinder, the second contact ring and the second connecting part 56 are coaxial. The inner diameter of the first contact cylinder is larger than the throat diameter of the second contact ring, and the inner diameter of the first contact cylinder is larger than the outer diameter of the first insertion portion 32a. The inner diameter of the first contact cylinder is smaller than the outer diameter of the elastic element 344, and the outer diameter of the first insertion portion 32a is smaller than the throat diameter of the second contact cylinder. When the connector pin 30d and the socket contact 50h are inserted into each other, the first insertion portion 32a and the second contact portion 54d are in elastic contact, and the first contact portion 52e and the second insertion portion 34a are in elastic contact. That is, the elastic element 344 is in elastic contact with the inner circumferential surface of the first contact cylinder, so as to achieve a double contact pair between the connector pin 30d and the socket contact 50h.

[0136] Because the first insertion portion 32a and the second contact portion 54d elastically contact to form one contact pair, and the first contact portion 52e and the elastic member 344 elastically contact to form another contact pair, the connector pin 30d and the socket contact 50h form a mating using a double contact pair. Compared to the single contact pair form used in the pin and contact assembly of the prior art, the double contact pair form used in the connector pin 30d and socket contact 50h of this application reduces contact resistance, improves overcurrent capability, and results in lower temperature rise. Furthermore, the connector terminal assembly weighs 100g and has fewer parts, a simpler structure, and lower manufacturing cost.

[0137] Optionally, the outer circumferential surface of the second connector 343 is provided with a positioning groove 3432, which surrounds the second connector 343 in a circumferential manner. The elastic element 344 is a lantern spring positioned in the positioning groove 3432. Specifically, the elastic element 344 includes mutually spaced fixing rings 3442 and a plurality of elastic strips 3443 connected between the two fixing rings 3442. The plurality of elastic strips 3443 surround the fixing rings 3442 in a circumferential manner; the middle part of each elastic strip 3443 bends outward along the radial direction of the second connector 343. In this embodiment, the plurality of elastic strips 3443 are evenly spaced around the fixing rings 3442 in a circumferential manner. The outer diameter of the second plug rod 343 is smaller than the outer diameter of the first connecting part 36. A positioning platform 362 is formed between the first connecting part 36 and the second plug rod 343, which acts as a stop step. A first fixing protrusion 342 is provided at one end of the outer circumference of the second plug rod 343 near the first connecting part 36. The first fixing protrusion 342 surrounds the second plug rod 343 in a circle. The positioning platform 362 and the first fixing protrusion 342 are used to make the connector pin 30d and the core that mates with it fit together to generate a fixing force, which can prevent the connector pin 30d from rotating circumferentially or moving axially.

[0138] like Figures 50-52 As shown, the second contact ring includes a plurality of third spring pieces 546. The opposite ends of the plurality of third spring pieces 546 are respectively connected between the first contact portion 52e and the second connecting portion 56. The plurality of third spring pieces 546 are arranged in a circle around the circumference of the first contact portion 52e at intervals, allowing the second contact ring to deform radially elastically. Each pair of adjacent third spring pieces 546 has a clearance groove. The plurality of third spring pieces 546 together form a socket, and each clearance groove connects to the socket. When the connector pin 30d is inserted into the socket contact member 50h, the first insertion portion 32a and the plurality of third spring pieces 546 elastically abut against each other, and the first contact cylinder and the elastic member 344 elastically abut against each other. The middle portion of the second contact ring is recessed into its inner cavity to form a second contact neck 5460. The inner diameter of the first contact cylinder is larger than the throat diameter of the second contact neck 5460. In this embodiment, the plurality of third spring pieces 546 are spirally arranged in a circle around the circumference of the first contact cylinder at uniform intervals, so that the middle portion of the second contact ring forms the second contact neck 5460. The throat diameter of the second contact ring refers to the minimum inner diameter of the second contact ring. This minimum inner diameter can be the inner diameter at the center of the second contact ring, or it can be near or far from the center. The 50h socket contact element is manufactured using a single-piece molding process, resulting in low cost.

[0139] The first contact portion 52e has multiple first operating grooves 5295 on its end face opposite to the third spring piece 546. These first operating grooves 5295 penetrate the inner and outer circumferential surfaces of the first contact portion 52e, and are arranged circumferentially around it. During the processing of the second contact ring in this embodiment, the second connecting portion 56 is first secured, and then a twisting tool is used to clamp the first contact portion 52e. That is, the twisting tool is positioned in the first operating groove 5295, and then the twisting tool drives the first contact portion 52e to rotate. The first contact portion 52e then drives the multiple third spring pieces 546 of the second contact ring to rotate, causing the third spring pieces 546 to form a spiral structure. By controlling the twisting angle of the twisting tool, different throat diameters can be obtained, with the twisting angle ranging from 10° to 80°. The twisting angle of the second contact ring with a larger throat diameter is set relatively larger, while the twisting angle of the terminal with a smaller throat diameter is set relatively smaller. The throat diameter of the second contact ring determines the clamping force when it contacts the terminal to be mated. The larger the twisting angle, the greater the clamping force. A larger clamping force can ensure better contact between the second contact ring and the first insertion part 32a, thereby resulting in lower contact resistance.

[0140] like Figure 46 and Figure 53 As shown, when the connector pin 30d is inserted into the socket contact 50h, the first insertion part 32a of the connector pin 30d is inserted into the first contact cylinder of the socket contact 50h, so that the first insertion part 32a passes through the first contact cylinder and is inserted into the inner cavity of the second contact ring. The first insertion part 32a slides against the multiple third springs 546, causing the third springs 546 to elastically deform, and the second contact ring expands away from the center, so that the second contact neck 5460 makes elastic contact with the first insertion part 32a. At the same time, the inner circumferential surface of the first contact part 52e slides against the elastic member 344, so that the multiple springs 3443 gradually contract towards the center of the first insertion rod 3, until the elastic member 344 is inserted into the inner cavity of the first contact part 52e, until the multiple springs 3443 make elastic contact with the inner circumferential surface of the first contact cylinder.

[0141] like Figure 54As shown, the structure of the connector terminal assembly 100f provided in the eighth embodiment of this application is similar to the structure of the connector terminal assembly provided in the seventh embodiment. The structure of the connector pin 30d in the eighth embodiment is the same as the structure of the connector pin in the seventh embodiment, and will not be described again here. The structure of the socket contact 50i in the eighth embodiment is slightly different from the structure of the socket contact in the seventh embodiment. Specifically, the socket contact 50i in the eighth embodiment includes a first contact portion 52f, a second contact portion 54e, and a second connecting portion 56d. One end of the first contact portion 52f is connected to the second contact portion 54e, and the second connecting portion 56d is connected to the end of the second contact portion 54e that is away from the first contact portion 52f. In this embodiment, the first contact portion 52f is a first contact cylinder with a uniform inner diameter, and the second contact portion 54e includes a second contact cylinder 7 and an elastic second contact ring 548. The second contact cylinder 7 is sleeved on the second contact ring 548. The first contact cylinder and the second contact cylinder 7 are coaxial, and the outer peripheral surface of the first contact cylinder is coplanar with the outer peripheral surface of the second contact cylinder 7. The inner diameter of the first contact cylinder is larger than the inner diameter of the second contact ring 548, and the inner diameter of the first contact cylinder is larger than the outer diameter of the first insertion portion 32a. The inner diameter of the first contact cylinder is smaller than the outer diameter of the elastic element 344, and the inner diameter of the second contact ring 548 is smaller than the outer diameter of the first insertion portion 32a. Specifically, the second contact ring 548 can be, but is not limited to, a crown spring or a torsion spring. When the connector pin 30d and the socket contact 50i are inserted into each other, the first insertion part 32a makes elastic contact with the second contact ring 548, and the first contact part 52f makes elastic contact with the elastic member 344. That is, the elastic member 344 makes elastic contact with the inner circumferential surface of the first contact cylinder, so as to realize the double contact pair between the connector pin 30d and the socket contact 50i.

[0142] Because the first insertion portion 32a and the second contact ring 548 make elastic contact to form one contact pair, and the first contact cylinder and the elastic member 344 make elastic contact to form another contact pair, the connector pin 30d and the socket contact 50i form a double contact pair. Compared with the single contact pair form of the pin and contact assembly in the prior art, the double contact pair form of the connector pin 30d and the socket contact 50i in this application can reduce contact resistance, improve overcurrent capability, and reduce temperature rise. In addition, the connector terminal assembly 100f has fewer parts, a simpler structure, and lower manufacturing cost.

[0143] Optionally, the middle portion of the second contact ring 548 is recessed into its inner cavity to form a third contact neck 5480. The inner diameter of the first contact cylinder is larger than the throat diameter of the third contact neck 5480, and the first insertion portion 32a can be elastically connected to the third contact neck 5480. The second contact ring 548 includes two second connecting rings 5482 spaced apart along its axial direction and a plurality of fourth spring pieces 5484. The two second connecting rings 5482 are coaxial, and the opposite ends of the plurality of fourth spring pieces 5484 are respectively connected to the two second connecting rings 5482. The plurality of fourth spring pieces 5484 are arranged in a circle around the circumference of the second connecting rings 5482 at intervals. The middle portion of each fourth spring piece 5484 is bent toward the axis close to the second connecting ring 5482, and the middle portions of the plurality of fourth spring pieces 5484 form the third contact neck 5480. In this embodiment, a plurality of fourth spring pieces 5484 are arranged at uniform intervals around the circumference of the second connecting ring 5482. The distance between two adjacent fourth spring pieces 5484 is greater than or equal to 0.6 times the thickness of the fourth spring piece 5484 and less than or equal to 2 times the thickness of the fourth spring piece 5484. The smaller the distance between two adjacent fourth spring pieces 5484, the better the current carrying capacity of the socket contact 50i. The inner circumferential surface of the second contact cylinder 7 is provided with a positioning groove, which surrounds the circumference of the second contact cylinder 7. The outer diameter of the second connecting ring 5482 is slightly larger than or equal to the inner diameter of the positioning groove to ensure that the second contact ring 548 can be firmly positioned in the inner cavity of the second contact cylinder 7. In this embodiment, a plurality of fourth spring pieces 5484 are arranged in a spiral around the second connecting ring 5482 in a circumferential direction, such that the throat diameter of the second contact ring 548 is smaller than the inner diameter of the second connecting ring 5482; the throat diameter of the second contact ring 548 refers to the minimum inner diameter of the second contact ring 548, which can be the inner diameter of the middle part of the second contact ring 548, or the inner diameter that is close to or far from the middle part of the second contact ring 548.

[0144] Optionally, the second connecting ring 5482 has a plurality of second operating grooves 5485 on the end face opposite to the fourth spring piece 5484. The second operating grooves 5485 penetrate the inner and outer circumferential surfaces of the second connecting ring 5482, and the plurality of second operating grooves 5485 are arranged circumferentially around the second connecting ring 5482 at intervals. During the processing of the second contact ring 548 in this embodiment, one of the second connecting rings 5482 is first stabilized, and then a torsion tool (servo motor or mechanical transmission mechanism) is used to clamp the other second connecting ring 5482. That is, the torsion tool is positioned in the second operating groove 5485, and then the torsion tool drives the other second connecting ring 5482 to rotate. The other second connecting ring 5482 then drives the plurality of fourth spring pieces 5484 of the second contact ring 548 to rotate, so that the plurality of fourth spring pieces 5484 present a spiral structure. By controlling the torsion angle of the torsion tool, different throat diameters can be obtained, and the torsion angle ranges from 10° to 80°. The second contact ring 548 with a larger throat diameter has a relatively larger torsion angle, while the terminal with a smaller throat diameter has a relatively smaller torsion angle. The throat diameter of the second contact ring 548 determines the magnitude of its clamping force when it contacts the terminal to be mated. The larger the torsion angle, the greater the clamping force. A larger clamping force allows the second contact ring 548 to have better contact with the first insertion portion 32a, thereby achieving a lower contact resistance.

[0145] The second connecting part 56d is a crimping tube, which connects to the wire through crimping. This crimping can be, but is not limited to, spot crimping, pit crimping, or hexagonal crimping. The second contact tube 7 and the crimping tube are coaxial. The outer circumferential surface of the crimping tube is provided with a retaining groove 562 to form a positioning part 57 on the outer circumferential surface of the crimping tube. The outer circumferential surface of the second contact tube 7 near the second connecting part 56d is provided with a second fixing protrusion 545, which surrounds the circumference of the second contact tube 7. When the socket contact 50i is installed in the glue core, the positioning part 57, the second fixing protrusion 545, and the retaining groove 562 are all positioned with the glue core. The second connecting part 56d closes the inner cavity of the second contact tube 7 away from the first contact tube 528, so that the socket contact 50i will not leak glue into the inner cavity of the second contact tube 7 when dispensing or wrapping glue.

[0146] like Figure 54 and Figure 55As shown, when the connector pin 30d is inserted into the socket contact 50i, the first insertion portion 32a of the connector pin 30d is inserted into the first contact cylinder of the socket contact 50i, so that the first insertion portion 32a passes through the first contact cylinder and is inserted into the inner cavity of the second contact ring 548. The first insertion portion 32a slides against the plurality of fourth spring pieces 5484, causing the fourth spring pieces 5484 to elastically deform, and the second contact ring 548 unfolds away from the center, so that the third contact neck 5480 makes elastic contact with the first insertion portion 32a. At the same time, the inner circumferential surface of the first contact portion 52f slides against the elastic member 344, so that the plurality of spring strips 3443 gradually retract towards the center of the first insertion rod 3 until the elastic member 344 is inserted into the inner cavity of the first contact cylinder, and until the plurality of spring strips 3443 make elastic contact with the inner circumferential surface of the first contact cylinder.

[0147] like Figures 56-62 As shown, the structure of the connector terminal assembly 100g provided in the ninth embodiment of this application is similar to the structure of the connector terminal assembly provided in the seventh embodiment. The structure of the connector pin 30e in the ninth embodiment is slightly different from the structure of the connector pin in the seventh embodiment, and the structure of the socket contact 50j in the ninth embodiment is slightly different from the structure of the socket contact in the seventh embodiment. Specifically, the connector pin 30e in the ninth embodiment includes a first insertion portion 32, a second insertion portion 34a, and a first connecting portion 36. The second insertion portion 34a is connected between the first insertion portion 32 and the first connecting portion 36. The first insertion portion 32, the second insertion portion 34a, and the first connecting portion 36 are arranged along the axial direction of the connector pin 30e. Both the insertion portion 32 and the second insertion portion 34a are capable of radial elastic deformation; the insertion contact 50j includes a first contact portion 52g, a second contact portion 54f, and a second connecting portion 56d. The second contact portion 54f is connected between the first contact portion 52g and the second connecting portion 56d. The first contact portion 52g is a first contact cylinder with a constant inner diameter, the second contact portion 54f is a second contact cylinder with a constant inner diameter, and the second connecting portion 56d is a connecting cylinder. The first contact cylinder, the second contact cylinder, and the connecting cylinder are coaxial. The inner diameter of the first contact cylinder is larger than the inner diameter of the second contact cylinder, the inner diameter of the first contact cylinder is larger than the outer diameter of the first insertion portion 32, the inner diameter of the second contact cylinder is smaller than the outer diameter of the first insertion portion 32, and the inner diameter of the first contact cylinder is smaller than the outer diameter of the second insertion portion 34a. When the connector pin 30e and the socket contact 50j are inserted into each other, the outer peripheral surface of the first insertion part 32 is in elastic contact with the inner peripheral surface of the second contact cylinder, and the outer peripheral surface of the elastic member 344 is in elastic contact with the inner peripheral surface of the first contact cylinder, so as to realize the double contact pair between the connector pin 30e and the socket contact 50j.

[0148] In this embodiment, the first insertion portion 32 and the second contact portion 54f make elastic contact to form a contact pair, and the second insertion portion 34a and the first contact portion 52g make elastic contact to form another contact pair; therefore, the connector pin 30e and the socket contact 50j form a mating pair using double contact pairs. Compared with the single contact pair form of the pins and contact assemblies in the prior art, the double contact pair form of the connector pin 30e and the socket contact 50j in this embodiment can reduce contact resistance, improve overcurrent capability, and reduce temperature rise. Furthermore, the connector terminal assembly 100g has fewer parts, a simpler structure, is easier to assemble, and has lower manufacturing costs.

[0149] Optionally, the first insertion portion 32 includes a plurality of first elastic arms 320, and the second insertion portion 34a is a second insertion rod 343 and an elastic element 344 disposed on the outer peripheral surface of the second insertion rod 343. The elastic element 344 can elastically deform along the radial direction of the second insertion rod 343. One end of each of the plurality of first elastic arms 320 is connected to one end of the second insertion rod 343. The plurality of first elastic arms 320 are arranged in a circle around the circumference of the second insertion rod 343 at intervals. The outer diameter of the first insertion portion 32 near the second insertion rod 343 is smaller than the outer diameter of the first insertion portion 32 away from the second insertion rod 343. A clearance groove 321 is formed between each pair of adjacent first elastic arms 320. The plurality of first elastic arms 320 together form a clearance hole 323. The clearance groove 321 communicates with the clearance hole 323. The clearance hole 323 is coaxial with the second insertion rod 343. The thickness of the first elastic arm 320 gradually increases from the second plug rod 343 toward the end away from the first connecting part 36 along the axial direction of the second plug rod 343, so that the outer diameter of the first plug part 32 near the end of the second plug rod 343 is smaller than the outer diameter of the end away from the second plug rod 343.

[0150] Optionally, the outer circumferential surface of the second connector 343 is provided with a positioning groove 3432, which surrounds the second connector 343 in a circumferential manner. The elastic element 344 is a lantern spring positioned in the positioning groove 3432. Specifically, the elastic element 344 includes two spaced-apart fixed rings 3442 and a plurality of elastic strips 3443 connected between the two fixed rings 3442. The plurality of elastic strips 3443 surround the fixed rings 3442 in a circumferential manner; the middle part of each elastic strip 3443 bends outward along the radial direction of the second connector 343. In this embodiment, the plurality of elastic strips 3443 are evenly spaced around the fixed rings 3442 in a circumferential manner. The outer diameter of the second plug rod 343 is smaller than the outer diameter of the first connecting part 36. A positioning platform 362 is formed between the first connecting part 36 and the second plug rod 343, which acts as a stop step. A first fixing protrusion 342 is provided at one end of the outer peripheral surface of the second plug rod 343 near the first connecting part 36. The first fixing protrusion 342 surrounds the second plug rod 343 in a circle. The positioning platform 362 and the first fixing protrusion 342 are used to make the connector pin 30d cooperate with the core of the core to generate a fixing force, which can prevent the connector pin 30e from rotating circumferentially or moving axially.

[0151] The second connecting part 56d is a crimping tube, which connects to the wire through crimping. This crimping can be, but is not limited to, spot crimping, pit crimping, or hexagonal crimping. The outer peripheral surface of the crimping tube is provided with at least one pair of snap-fit ​​grooves 562 to form a positioning part 57 on the outer peripheral surface of the crimping tube; when the plug contact 50j is installed on the core, both the positioning part 57 and the snap-fit ​​grooves 562 are positioned with the core.

[0152] When connector pin 30e is inserted into socket contact 50j, the first insertion portion 32 of connector pin 30e is inserted into the first contact cylinder of socket contact 50j, so that the first insertion portion 32 passes through the first contact cylinder and inserts into the second contact cylinder. The guide surface 324 of the first insertion portion 32 slides against the inner circumferential surface of the second contact cylinder, causing multiple first elastic arms 320 to gradually retract towards the center of the clearance hole 323 until the first insertion portion 32 is inserted into the second contact cylinder, and the first elastic arms 320 make elastic contact with the inner circumferential surface of the second contact cylinder. At the same time, the inner circumferential surface of the first contact portion 52g slides against the elastic member 344, causing multiple spring bars 3443 to gradually retract towards the center of the second insertion rod 343 until the elastic member 344 is inserted into the inner cavity of the first contact cylinder, and until the multiple spring bars 3443 make elastic contact with the inner circumferential surface of the first contact cylinder.

[0153] Please refer to the following: Figures 63-69The connector terminal assembly 100h provided in the tenth embodiment of this application has a structure similar to that of the connector terminal assembly provided in the first embodiment. The structure of the connector pin 30f in the tenth embodiment is slightly different from that of the connector pin in the first embodiment, and the structure of the socket contact 50h in the tenth embodiment is slightly different from that of the socket contact in the first embodiment. Specifically, the connector pin 30f in the tenth embodiment includes a first insertion portion 32a, a second insertion portion 34b, and a first connecting portion 36. The second insertion portion 34b is connected between the first insertion portion 32a and the first connecting portion 36. In this embodiment, the first insertion portion 32a is a first insertion rod of equal diameter, and the second insertion portion 34b is a first insertion rod of equal diameter. The second plug rod has a first connecting part 36 that is a connecting cylinder. The first plug rod, the second plug rod, and the connecting cylinder are coaxial. The diameter of the first plug part 32a is smaller than the diameter of the second plug part 34b, and the outer diameter of the first connecting part 36 is larger than the diameter of the second plug part 34b, so that a positioning platform 362 is formed between the first connecting part 36 and the second plug part 34b. A first fixing protrusion 342 is provided at one end of the outer circumference of the second plug rod near the first connecting part 36. The first fixing protrusion 342 surrounds the second plug part 34b in a circle. The positioning platform 362 and the first fixing protrusion 342 are used to make the connector pin 30f and the core that mate with it fit together to generate a fixing force, which can prevent the connector pin 30f from rotating circumferentially or moving axially.

[0154] Optionally, the socket contact 50h includes a first contact portion 52h, a second contact portion 54g, and a second connecting portion 56d. The second contact portion 54g is connected between the first contact portion 52h and the second connecting portion 56d. The second contact portion 54g is a second contact cylinder, and the second connecting portion 56d is a connecting cylinder. The second contact cylinder and the connecting cylinder are coaxial. Specifically, the first contact portion 52h includes a plurality of first spring pieces 520b, and the second contact portion 54g includes a second contact cylinder 7 and an elastic second contact ring 548. The second contact cylinder 7 is sleeved on the second contact ring 548, and the middle part of the second contact ring 548 is recessed into its inner cavity to form a third contact neck 5480. One end of the plurality of first spring pieces 520b is respectively connected to one end of the second contact cylinder 7. The plurality of first spring pieces 520b are arranged in a circle around the circumference of the second contact cylinder 7 at intervals. There is a clearance groove 521 between each pair of adjacent first spring pieces 520b. The end of the first spring piece 520b away from the second contact cylinder 7 is inclined toward the axis of the second contact cylinder 7. The inner diameter formed by the end of the plurality of first spring pieces 520b away from the second contact portion 54g is smaller than the inner diameter formed by the end of the plurality of first spring pieces 520b close to the second contact portion 54g. In this embodiment, a plurality of first spring pieces 520b are arranged in a circle around the second contact cylinder 7 at uniform intervals, each first spring piece 520b being an arc-shaped piece. The ends of the plurality of first spring pieces 520b furthest from the second contact cylinder 7 form a first throat hole 526c. The inner diameter of the first throat hole 526c is larger than the outer diameter of the first insertion portion 32a, and the inner diameter of the first throat hole 526c is smaller than the outer diameter of the second insertion portion 34b. In other embodiments, the second contact ring 548 may also be a crown spring.

[0155] Optionally, the second contact ring 548 includes two second connecting rings 5482 spaced apart along its axial direction and a plurality of fourth spring pieces 5484. The two second connecting rings 5482 are coaxial, and the opposite ends of the plurality of fourth spring pieces 5484 are respectively connected to the two second connecting rings 5482. The plurality of fourth spring pieces 5484 are arranged in a circle around the circumference of the second connecting rings 5482 at intervals. The middle part of each fourth spring piece 5484 is bent towards the axis of the second connecting ring 5482, and the middle parts of the plurality of fourth spring pieces 5484 form a third contact neck 5480. In this embodiment, the plurality of fourth spring pieces 5484 are arranged in a circle around the circumference of the second connecting ring 5482 at uniform intervals. The inner circumferential surface of the second contact cylinder 7 is provided with a positioning groove, which surrounds the circumference of the second contact cylinder 7. The outer diameter of the second connecting ring 5482 is slightly larger than or equal to the inner diameter of the positioning groove to ensure that the second contact ring 548 can be firmly positioned in the inner cavity of the second contact cylinder 7. In this embodiment, a plurality of fourth spring pieces 5484 are arranged in a spiral around the second connecting ring 5482 in a circumferential manner, such that the throat diameter of the second contact ring 548 is smaller than the inner diameter of the second connecting ring 5482.

[0156] The manufacturing method of the second contact ring 548 in this embodiment is the same as that of the second contact ring in the eighth embodiment, and will not be described again here.

[0157] When the connector pin 30f is inserted into the socket contact 50h, the first insertion portion 32a of the connector pin 30f is inserted into the first throat hole 526c of the socket contact 50h, so that the first insertion portion 32a passes through the first throat hole 526c and is inserted into the inner cavity of the second contact ring 548. The outer peripheral surface of the first insertion portion 32a slides against a plurality of fourth spring pieces 5484, causing the fourth spring pieces 5484 to elastically deform outward until the first insertion portion 32a makes elastic contact with the plurality of fourth spring pieces 5484. At the same time, the outer peripheral surface of the second insertion portion 34b slides against a plurality of first spring pieces 520b, causing the plurality of first spring pieces 520b to gradually elastically deform in a direction away from the axis of the first insertion portion 32a, until all the first spring pieces 520b make elastic contact with the outer peripheral surface of the first insertion portion 32a.

[0158] Please refer to the following: Figures 70-71 The structure of the connector terminal assembly 100i provided in the eleventh embodiment of this application is similar to that of the connector terminal assembly provided in the tenth embodiment. The structure of the connector pin 30g in the eleventh embodiment is slightly different from that of the connector pin in the tenth embodiment, and the structure of the socket contact 50i in the eleventh embodiment is slightly different from that of the socket contact in the tenth embodiment. Specifically, the connector pin 30g in the eleventh embodiment includes a first insertion portion 32b, a second insertion portion 34c, and a first connecting portion 36. The second insertion portion 34c is connected between the first insertion portion 32b and the first connecting portion 36. In this embodiment, the first insertion portion 32b is a first insertion rod, the second insertion portion 34c is a second insertion rod, and the first connecting portion 36 is a connecting part. The two ends of the first plug-in rod and the connecting cylinder are respectively connected to the first plug-in rod and the connecting cylinder. The first plug-in rod, the second plug-in rod and the connecting cylinder are coaxial. The outer diameter of the first plug-in part 32b is equal to the outer diameter of the second plug-in part 34c. The outer diameter of the first connecting part 36 is greater than the outer diameter of the second plug-in part 34c, so as to form a positioning platform 362 between the first connecting part 36 and the second plug-in part 34c. The outer peripheral surface of the second plug-in part 34c is provided with a first fixing protrusion 342 near the end of the first connecting part 36. The first fixing protrusion 342 surrounds the second plug-in part 34c in a circle. The positioning platform 362 and the first fixing protrusion 342 are used to make the connector pin 30g and the plastic core that mate with it have an interference fit to generate a fixing force, which can prevent the connector pin 30g from rotating circumferentially or moving axially.

[0159] Optionally, the first contact portion 52a includes a first contact cylinder 528 and an elastic first contact ring 529. The first contact cylinder 528 is sleeved on the first contact ring 529, and the middle part of the first contact ring 529 is recessed into its inner cavity to form a first contact neck 529a. The second contact portion 54h includes a second contact cylinder 7 and an elastic abutment member 549. The second contact cylinder 7 is sleeved on the abutment member 549. One end of the first contact cylinder 528 is connected to one end of the second contact cylinder 7, and the first contact cylinder 528 and the second contact cylinder 7 are coaxial. The throat diameter of the first contact neck 529a is smaller than the outer diameter of the second insertion portion 34c, and the outer diameter of the first insertion portion 32b is smaller than or equal to the inner diameter of the second contact cylinder 7. The first insertion portion 32b can be inserted into the second contact cylinder 7. In this embodiment, the abutment member 549 is a conductive compression spring, and the elastic deformation range of the abutment member 549 along the axial direction of the second contact cylinder 7 is greater than 2.0 mm. When the connector pin 30g is inserted into the socket contact 50i, the first insertion part 32b elastically abuts against the end face of the abutment 549, and the insertion rod c elastically contacts the inner circumferential surface of the first contact ring 529, so as to achieve a double contact pair between the connector pin 30g and the socket contact 50i.

[0160] In this embodiment, when the connector pin 30g and the socket contact 50i are inserted into each other, the first insertion portion 32b and the abutment 549 make elastic contact to form one contact pair, and the second insertion portion 34c and the first contact ring 529 make elastic contact to form another contact pair; therefore, the connector pin 30g and the socket contact 50i form a double contact pair. Compared with the single contact pair form of the pins and contact assemblies in the prior art, the double contact pair form of the connector pin 30g and the socket contact 50i in this application can reduce contact resistance, improve overcurrent capability, and reduce temperature rise. In addition, the connector terminal assembly 100i has fewer parts, a simpler structure, and lower manufacturing cost.

[0161] like Figures 71-73 As shown, a positioning cylinder 5284 is provided at the end of the first contact cylinder 528 away from the second contact cylinder 7, and the positioning cylinder 5284 is coaxial with the first contact cylinder 528. When assembling the socket contact 50i, the abutment 549 is inserted into the inner cavity of the second contact cylinder 7 through the inner cavity of the positioning cylinder 5284 and the inner cavity of the first contact cylinder 528, so that the abutment 549 is positioned in the inner cavity of the second contact cylinder 7; the first contact ring 529 is inserted into the inner cavity of the first contact cylinder 528 through the inner cavity of the positioning cylinder 5284, so that the first contact ring 529 is positioned in the inner cavity of the first contact cylinder 528; the positioning cylinder 5284 is bent toward the axis of the first contact cylinder 528 to prevent the first contact ring 529 from detaching from the first contact cylinder 528.

[0162] Please see Figure 74The structure of the connector terminal assembly provided in the twelfth embodiment of this application is similar to that of the connector terminal assembly provided in the eleventh embodiment. The structure of the connector pin in the twelfth embodiment is the same as that of the connector pin in the eleventh embodiment, and will not be described again here. The structure of the socket contact 50j in the twelfth embodiment is slightly different from that of the socket contact in the eleventh embodiment. Specifically, the abutting member 549a of the second contact portion 54h in the twelfth embodiment adopts a conductive button contact, which is housed in the inner cavity of the second contact cylinder 7. The button contact adopts a highly elastic metal wire, such as beryllium bronze wire, which is randomly and densely wound into a cylindrical shape through a special process. The principle of the button contact is the same as that of ordinary spring contact, which is elastic contact. It relies on axial elastic compression to achieve reliable contact between the button contact and other components. When the end face of the first plug portion abuts against the button contact and is squeezed by external force, the button contact can generate elastic deformation, thereby maintaining a good electrical connection.

[0163] When the connector pins and socket contacts 50j are mated, the first insertion part elastically contacts the button to form one contact pair, and the second insertion part elastically contacts the first contact ring 529 to form another contact pair; therefore, the connector pins and socket contacts 50j use a double contact pair to form a mating. Compared with the single contact pair form of the pins and contact assemblies in the prior art, the double contact pair form of the connector pins and socket contacts 50j in this application can reduce contact resistance, improve overcurrent capability, reduce temperature rise, and the connector terminal assembly has fewer parts, a simpler structure, and lower manufacturing cost.

[0164] Please refer to the following: Figures 75-76 The structure of the connector terminal assembly provided in the thirteenth embodiment of this application is similar to that of the connector terminal assembly provided in the eleventh embodiment, except that: the abutting member 549b of the second contact portion in the thirteenth embodiment adopts a conductive finger spring, which is housed in the inner cavity of the second contact cylinder; when the end face of the first insertion portion abuts against the finger spring and is squeezed by external force, the finger spring can generate elastic deformation, thereby maintaining a good electrical connection.

[0165] This contact spring is made by bending a highly conductive contact wire using the elastic force of the spring. The contact wire can be, but is not limited to, beryllium bronze wire or phosphor bronze wire. The contact wire has good conductivity and elasticity. The contact spring provides a low-resistance electrical connection when the first insertion part makes contact, and it undergoes elastic deformation under external force to ensure a tight fit between the contact spring and the contact object, maintaining close contact between the contact spring and the corresponding contact part of the first insertion part. When external force is applied to the contact spring, it undergoes compression deformation, thereby moving the contact wire to adapt to different contact distances and pressure requirements. In the electrical connection, a low-resistance conductive path is formed between the contact spring and the contact object, enabling current transmission. Simultaneously, the elasticity of the contact spring can also compensate for unevenness and tolerances of the contact surface to a certain extent, ensuring reliable electrical contact.

[0166] The finger spring is manufactured by winding a single spring wire using a spring machine or other methods. Specifically, the finger spring uses a highly conductive and highly elastic spring wire, which can be processed by twisting and bending a single spring wire using a spring machine, and then welding or bonding the ends together. In this embodiment, the abutment 549b has a tapered outer contour. The abutment 549b includes a top ring 5491, a bottom ring 5492, and a first connecting rod 5493 and a second connecting rod 5494 connected between the top ring 5491 and the bottom ring 5492. The first connecting rod 5493 is located on the outside of the abutment 549b, and the second connecting rod 5494 is located on the inside of the abutment 549b. The first included angle α of the rotation of the top ring 5491 relative to the bottom ring 5492 can optionally range from 30° to 50°, that is, the first included angle α can be, but is not limited to, 30°, 32°, 34°, 35°, 36°, 38°, 40°, 41°, 44°, 45°, 47°, 48°, 49°, 50°, etc. Viewed from the side, the first connecting rod 5493 and the adjacent single second connecting rod 5494 of the abutment member 549b are both inclined to the same side relative to the plane containing the bottom ring 5492. The plane passing through the single first connecting rod 5493 and the second connecting rod 5494 forms a second included angle b with the plane containing the bottom ring 5492. Optionally, the value of the second included angle b is within 0°.

[0167] The second included angle b can be, but is not limited to, 5°, 10°, 14°, 18°, 25°, 30°, 45°, 50°, 60°, 70°, 75°, 80°, 85°, and 90°. The force F applied to the top ring 5491 of the abutment member 549b causes the top ring 5491 of the abutment member 549b to move closer to the bottom ring 5492. Simultaneously, the aforementioned second included angle b also decreases until the spring force of the abutment member 549b in the vertical direction balances the applied force F. When the force F is removed, the abutment member 549b automatically resets to its initial state under the action of its own spring force.

[0168] Please refer to the following: Figures 77-78 The structure of the connector terminal assembly provided in the fourteenth embodiment of this application is similar to that of the connector terminal assembly provided in the eleventh embodiment, except that: the abutting member 549c of the second contact portion in the fourteenth embodiment adopts a conductive finger spring, which is housed in the inner cavity of the second contact cylinder; when the end face of the first insertion portion abuts against the finger spring and is squeezed by external force, the finger spring can generate elastic deformation, thereby maintaining a good electrical connection.

[0169] In this embodiment, the abutment member 549c has a cylindrical outer contour. The abutment member 549c includes a top ring 5491, a bottom ring 5492, and a first connecting rod 5493 and a second connecting rod 5494 connected between the top ring 5491 and the bottom ring 5492. The first connecting rod 5493 is located outside the abutment member 549b, and the second connecting rod 5494 is located inside the abutment member 549b. The radial width of the top ring 5491 is approximately the same as the radial width of the bottom ring 5492. The top ring 5491 increases the contact area with the end face of the first insertion portion, and the bottom ring 5492 increases the contact area with the power contact plate, thereby increasing contact reliability.

[0170] The other structures of the abutment member 549c in the fourteenth embodiment are the same as those in the abutment member in the thirteenth embodiment, and will not be described again.

[0171] Please refer to the following: Figures 79-80 The structure of the connector terminal assembly provided in the fifteenth embodiment of this application is similar to that of the connector terminal assembly provided in the eleventh embodiment, except that: the abutting member 549d of the second contact portion in the fifteenth embodiment adopts a conductive corrugated spring, which is housed in the inner cavity of the second contact cylinder; when the end face of the first insertion portion abuts against the corrugated spring and is squeezed by external force, the corrugated spring can generate elastic deformation, thereby maintaining a good electrical connection.

[0172] In this embodiment, the corrugated spring has crests facing each other and troughs facing each other. Both the top surface 5495 and the bottom surface 5496 are horizontal end faces. The spring is naturally wound with n turns. Except for the top and bottom ends, each turn of the corrugated spring is a sinusoidal waveform, with crests facing crests and troughs facing troughs between layers. The corrugated spring is made of wavy, flat metal wire wound spirally with crests facing crests, exhibiting excellent elasticity and toughness. The top surface 5495 and the bottom surface 5496 of the corrugated spring are both flat ends, equivalent to adding two washers at opposite ends of the spring, making the spring force more uniform during use. Structurally, this corrugated spring maintains the consistency of crests facing crests and troughs facing troughs, belonging to a type of corrugated spring with flat turns and staggered crests. Because the wave crests are aligned, each layer has multiple contact points with adjacent layers, which greatly increases the contact area and thus improves the current carrying capacity of the corrugated spring. In addition, the structure is simple, easy to manufacture and process, and has low cost.

[0173] The winding process of this corrugated spring is as follows: One end of the prepared flat spring wire is fixed to the mandrel of the winding equipment. The mandrel begins to rotate, and simultaneously, the feeding mechanism of the equipment feeds the flat spring wire along the axial direction of the mandrel at a constant speed. During feeding, the flat spring wire passes through a specially designed guide mold, which guides the spring wire to bend according to the predetermined corrugated shape, forming a wave. As the mandrel continues to rotate, the wavy flat spring wire is gradually wound around the mandrel, forming a multi-layered helical structure. During the winding process of the corrugated spring, the number of turns, the outer and inner diameters of the spring, and the shape accuracy of the corrugations are monitored in real time. Through the feedback control system of the equipment, the feeding speed, mandrel rotation speed, and tension are finely adjusted to ensure the accuracy and stability of the winding process. For example, if a deviation in the outer diameter is found, the feeding speed or tension can be adjusted appropriately to make the spring wire more tightly or loosely wound, thereby correcting the outer diameter. When the winding is close to the target number of turns, the winding speed is slowed down to ensure the winding accuracy of the last few turns. Once the predetermined number of turns is reached, stop the winding equipment and fix the end of the spring wire to the mandrel to prevent it from loosening.

[0174] Each crest of a corrugated spring contacts the corresponding trough of the next layer. When there are N crests and troughs in one turn, each layer will have N contact points with the adjacent layers. Due to the multiple contact points, the current-carrying area is increased while the contact resistance is reduced, thus improving the current-carrying capacity.

[0175] like Figure 81As shown, in other embodiments, the structure of the abutment 549e is similar to that of the abutment 549d provided in the fifteenth embodiment, except that the number of flat spring wire winding layers of the abutment 549e is less than that of the abutment 549d, and the number of peaks and troughs on each layer of the abutment 549e is different from the number of peaks and troughs on each layer of the abutment 549d.

[0176] Please see Figure 82 As shown, the connector terminal assembly provided in the sixteenth embodiment of this application has a similar structure to the connector terminal assembly provided in the eleventh embodiment, except that: in the sixteenth embodiment, the abutment member 549d of the second contact portion adopts a conductive helical spring, which is housed in the inner cavity of the second contact cylinder; when the end face of the first insertion portion abuts against the helical spring and is subjected to external force, the helical spring can generate elastic deformation, thereby maintaining a good electrical connection. The helical spring can be, but is not limited to, a rectangular helical spring, a circular helical spring, etc.; in this embodiment, the helical spring is a rectangular helical spring.

[0177] Specifically, a rectangular helical spring is rectangular in shape and is made of metal wire with a rectangular cross-section wound into a spiral. This special shape allows the spring to provide greater load-bearing capacity and deformation within the same space. Compared to helical springs made of metal wire with a circular cross-section, rectangular helical springs have a more compact structure. They are usually wound in a close-wound manner, with adjacent spring coils closely arranged to ensure that the spring can transmit force and deformation evenly when under stress. Depending on the specific application requirements, the helix direction of a rectangular helical spring can be left-handed or right-handed.

[0178] When the end face of the first plug-in part abuts against the rectangular helical spring, the end face of the first plug-in part contacts one end of the rectangular helical spring. As the insertion depth of the first plug-in part increases, the rectangular helical spring is further compressed. While being compressed, it also provides a positive force to the rectangular helical spring and the first plug-in part, ensuring the reliability of the contact.

[0179] The embodiments of this application have been described in detail above. Specific examples have been used in this article to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application.

Claims

1. A connector pin, characterized in that, The connector pins include: First connector; A second connector, the second connector being connected to one end of the first connector; and A first connecting portion is connected to one end of the second plug portion opposite to the first plug portion. The first plug portion and the second plug portion are arranged along the axial direction of the connector pin. The first plug portion is radially elastically deformable and / or the second plug portion is radially elastically deformable.

2. The connector pin according to claim 1, characterized in that, The first plug-in portion includes a plurality of first elastic arms, and the second plug-in portion is a plug-in rod. One end of each of the plurality of first elastic arms is connected to one end of the plug-in rod. The plurality of first elastic arms are arranged in a circle around the circumference of the plug-in rod at intervals. The outer diameter of the first plug-in portion near the plug-in rod is smaller than the outer diameter of the first plug-in portion away from the plug-in rod.

3. The connector pin according to claim 2, characterized in that, Multiple first elastic arms form a clearance hole, and the end face of the plug rod near the first plug part is provided with a countersunk hole, and the clearance hole communicates with the countersunk hole.

4. The connector pin according to claim 2, characterized in that, The outer circumferential surface of the plug rod is provided with a first fixing protrusion at the end away from the first plug part, and the first fixing protrusion surrounds the circumference of the plug rod.

5. The connector pin according to claim 1, characterized in that, The first plug-in portion is a first plug-in rod, and the second plug-in portion includes a second plug-in rod and an elastic element disposed on the outer peripheral surface of the second plug-in rod. The elastic element can elastically deform along the radial direction of the second plug-in rod.

6. The connector pin according to claim 5, characterized in that, The outer circumferential surface of the second plug rod is provided with a positioning groove, which surrounds the circumference of the second plug rod, and the elastic element is a lantern spring positioned in the positioning groove.

7. The connector pin according to claim 1, characterized in that, The first plug-in portion includes a plurality of first elastic arms, and the second plug-in portion includes a second plug-in rod and an elastic element disposed on the outer peripheral surface of the second plug-in rod. The elastic element can elastically deform along the radial direction of the second plug-in rod. One end of the plurality of first elastic arms is respectively connected to one end of the second plug-in rod, and the plurality of first elastic arms are arranged in a circle around the second plug-in rod at intervals. The outer diameter of the first plug-in portion near the second plug-in rod is smaller than the outer diameter of the first plug-in portion away from the second plug-in rod.

8. The connector pin according to claim 1, characterized in that, The first insertion part is a first insertion rod, the second insertion part is a second insertion rod, the first insertion rod and the second insertion rod are coaxial, and the outer diameter of the first insertion part is smaller than the outer diameter of the second insertion part.

9. A socket contact for mating with connector pins, characterized in that, The socket contact includes: First contact part; The second contact portion is connected to one end of the first contact portion; and The second connecting part is connected to the end of the second contact part away from the first contact part; the socket of the socket contact member passes through the first contact part and the second contact part; the connector pin is inserted into the socket, and the connector pin is in elastic contact with the second contact part and the connector pin is in elastic contact with the first contact part.

10. The socket contact according to claim 9, characterized in that, The connector pin is a connector pin as described in any one of claims 1-8, wherein the first contact portion and the second contact portion are arranged along the axial direction of the socket, and the first contact portion is capable of radial elastic deformation and / or the second contact portion is capable of radial elastic deformation.

11. The socket contact according to claim 10, characterized in that, The first contact portion includes a plurality of first spring pieces, and the second contact portion is a contact cylinder. One end of each of the plurality of first spring pieces is connected to one end of the contact cylinder. The plurality of first spring pieces are arranged in a circle around the circumference of the contact cylinder at intervals. The end of the first spring piece away from the contact cylinder is inclined toward the axis of the contact cylinder.

12. The socket contact according to claim 11, characterized in that, The first spring includes a connecting strip and a guide strip. One end of the guide strip is connected to one end of the connecting strip, and the end of the connecting strip away from the guide strip is connected to the contact cylinder. The end of the connecting strip near the guide strip is inclined toward the axis of the contact cylinder. The guide strip extends inclinedly from the connecting strip away from the axis. The connection points of the plurality of connecting strips and the plurality of guide strips respectively form a first throat hole.

13. The socket contact according to claim 12, characterized in that, The middle part of the contact cylinder is recessed into its inner cavity to form a contact neck, and the inner diameter of the contact neck is smaller than the inner diameter of the first throat hole.

14. The socket contact according to claim 11, characterized in that, The first contact portion further includes a guide ring, which is connected to one end of the plurality of first spring pieces away from the contact cylinder. The guide ring is coaxial with the contact cylinder. The end of the guide ring near the first spring piece forms a second throat hole, and the end of the guide ring away from the first spring piece forms a guide hole. The inner diameter of the second throat hole is smaller than the inner diameter of the guide hole.

15. The socket contact according to claim 10, characterized in that, The first contact portion includes a first contact cylinder and an elastic first contact ring. The first contact cylinder is sleeved on the first contact ring, and the middle part of the first contact ring is recessed into its inner cavity to form a first contact neck. The second contact portion is a second contact cylinder, which is coaxial with the first contact cylinder. The throat diameter of the contact neck is larger than the inner diameter of the second contact cylinder.

16. The socket contact according to claim 10, characterized in that, The first contact portion includes a plurality of second spring pieces, the second contact portion being a contact cylinder, one end of each of the plurality of second spring pieces being connected to one end of the contact cylinder, the plurality of second spring pieces being arranged in a circle around the circumference of the contact cylinder at intervals, and the inner diameter of the first contact portion being larger than the inner diameter of the contact cylinder.

17. The socket contact according to claim 10, characterized in that, The first contact portion is a first contact cylinder, and the second contact portion is an elastic second contact ring. One end of the first contact cylinder is connected to one end of the second contact ring. The first contact cylinder and the second contact ring are coaxial. The middle part of the second contact ring is recessed into its inner cavity to form a second contact neck. The inner diameter of the first contact cylinder is larger than the throat diameter of the second contact neck.

18. The socket contact according to claim 10, characterized in that, The first contact portion is a first contact cylinder, and the second contact portion includes a second contact cylinder and an elastic second contact ring. The second contact cylinder is sleeved on the second contact ring, and the middle part of the second contact ring is recessed into its inner cavity to form a third contact neck. The first contact cylinder and the second contact cylinder are coaxial, and the inner diameter of the first contact cylinder is larger than the throat diameter of the third contact neck.

19. The socket contact according to claim 10, characterized in that, The first contact portion includes a plurality of first spring pieces, and the second contact portion includes a second contact cylinder and an elastic second contact ring. The second contact cylinder is sleeved on the second contact ring, and the middle part of the second contact ring is recessed into its inner cavity to form a third contact neck. One end of the plurality of first spring pieces is respectively connected to one end of the second contact cylinder. The plurality of first spring pieces are arranged in a circle around the circumference of the second contact cylinder at intervals. The end of the first spring piece away from the second contact cylinder is inclined toward the axis of the second contact cylinder.

20. The socket contact according to claim 10, characterized in that, The first contact portion includes a first contact cylinder and an elastic first contact ring. The first contact cylinder is sleeved on the first contact ring, and the middle part of the first contact ring is recessed into its inner cavity to form a first contact neck. The second contact portion includes a second contact cylinder and an elastic abutment. The second contact cylinder is sleeved on the abutment. One end of the first contact cylinder is connected to one end of the second contact cylinder. The first contact cylinder and the second contact cylinder are coaxial.

21. A connector terminal assembly, characterized in that, The connector terminal assembly includes connector pins as described in any one of claims 1-8 and socket contacts as described in any one of claims 11-20, wherein the connector pins and the socket contacts are interlocking.

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