Connector pin, jack contact element and connector terminal assembly

Abstract

The invention discloses a connector pin, a jack contact element and a connector terminal assembly, the connector pin comprises a first plugging part and a second plugging part, the second plugging part is connected to one end of the first plugging part, and the first plugging part and the second plugging part are arranged along the axial direction of the connector pin. And the first inserting part can elastically deform in the radial direction and / or the second inserting part can elastically deform in the radial direction. The jack contact piece comprises a first contact part and a second contact part, the second contact part is connected to one end of the first contact part, and a jack of the jack contact piece penetrates through the first contact part and the second contact part; the connector pin is plugged in the jack, the first plugging part of the connector pin is in elastic contact with the second contact part, and the second plugging part of the connector pin is in elastic contact with the first contact part. The connector pin of the connector terminal assembly and the jack contact element can be mutually inserted.

Description

Technical Field

[0001] This application relates to the technical field of electrical connection, and particularly to a connector pin, a jack contact, and a connector terminal assembly provided with the connector pin and the jack contact. Background Art

[0002] Connectors are widely used in various types of vehicles, communication, computer and other consumer electronics, industrial, transportation and other fields. As a key component among them, the connector terminal is mainly used to transmit current or signals. Existing connector terminals generally include a pin and a jack contact, and the pin can be inserted into or removed from the jack contact; however, the existing pin and jack contact generally use a single contact pair to achieve mating insertion, which has limited effect on reducing contact resistance, and the single contact pair has a higher temperature rise and poor over-current capacity. Summary of the Invention

[0003] The purpose of this application is to provide a connector terminal with strong over-current capacity, simple structure and low manufacturing cost, and a connector terminal assembly provided with the connector terminal.

[0004] This application provides a connector pin, which includes a first insertion part and a second insertion part. The second insertion part is connected to one end of the first insertion part, and the first insertion part and the second insertion part are arranged along the axial direction of the connector pin. The first insertion part can be elastically deformed radially and / or the second insertion part can be elastically deformed radially.

[0005] This application also provides a jack contact for cooperating with the connector pin. The jack contact includes a first contact part and a second contact part. The second contact part is connected to one end of the first contact part. The jack of the jack contact penetrates through the first contact part and the second contact part. The connector pin is inserted into the jack, and there is elastic contact between the connector pin and the second contact part, and elastic contact between the connector pin and the first contact part.

[0006] This application also provides a connector terminal assembly, which includes a connector pin and a jack contact, and the connector pin and the jack contact can be inserted into each other.

[0007] When the connector pin and the jack contact of the present application are inserted into each other, since the first insertion part and the second contact part are in elastic contact to form a contact pair, and the second insertion part and the first contact part are in elastic contact to form another contact pair; therefore, the connector pin and the jack contact of the present application adopt a double-contact-pair form for cooperation. Compared with the prior art in which the pin and the contact assembly adopt a single-contact-pair form, the connector pin and the jack contact of the present application adopt a double-contact-pair form, which can reduce the contact resistance, improve the over-current capacity, have a lower temperature rise, and the connector terminal assembly has fewer parts, a simple structure, and a lower manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the present application, the drawings required for the embodiments will be briefly introduced below.

[0009] Figure 1 is a schematic structural diagram of a connector terminal assembly provided by the first embodiment of the present application.

[0010] Figure 2 is Figure 1 an exploded schematic diagram of the connector terminal assembly in

[0011] Figure 3 is Figure 1 a three-dimensional structural exploded schematic diagram of the connection terminal assembly in

[0012] Figure 4 is Figure 3 a schematic cross-sectional view of one of the connector pins in

[0013] Figure 5 is Figure 3 a three-dimensional structural schematic diagram of the jack contact from another perspective in

[0014] Figure 6 is Figure 5 a schematic cross-sectional view of one of the jack contacts in

[0015] Figure 7 is Figure 1 a schematic cross-sectional view of one of the connector terminal assemblies in

[0016] Figure 8 is Figure 3 a three-dimensional structural schematic diagram of another embodiment of the connector pin in

[0017] Figure 9 is Figure 3 a three-dimensional structural schematic diagram of yet another embodiment of the connector pin in

[0018] Figure 10 is Figure 3Schematic diagram of the three-dimensional structure of another embodiment of the jack contact in

[0019] Figure 11 It is Figure 3 Schematic diagram of the three-dimensional structure of yet another embodiment of the jack contact in

[0020] Figure 12 It is the exploded view of the connector terminal assembly provided by the second embodiment of the present application.

[0021] Figure 13 It is Figure 12 Schematic diagram of the three-dimensional structure of the jack contact in

[0022] Figure 14 It is Figure 13 Schematic diagram of the three-dimensional structure of the jack contact from another perspective in

[0023] Figure 15 It is Figure 13 Schematic diagram of one of the cross-sections of the jack contact in

[0024] Figure 16 It is Figure 15 Schematic diagram of the three-dimensional structure of the first contact part in

[0025] Figure 17 It is Figure 12 Schematic diagram of one of the cross-sections in the state where the connector pin and the jack contact are inserted into each other in

[0026] Figure 18 It is the schematic diagram of the three-dimensional structure of the connector terminal assembly provided by the third embodiment of the present application.

[0027] Figure 19 It is Figure 18 Exploded view of the connector terminal assembly in

[0028] Figure 20 It is Figure 19 Schematic diagram of the three-dimensional structure of the jack contact in

[0029] Figure 21 It is Figure 20 Schematic diagram of the three-dimensional structure of the jack contact from another perspective in

[0030] Figure 22 It is Figure 21 Schematic diagram of one of the cross-sections of the jack contact in

[0031] Figure 23 It is Figure 18 Schematic diagram of one of the cross-sections of the connector terminal assembly in

[0032] Figure 24It is a schematic perspective view of a connector terminal assembly provided by the fourth embodiment of the present application.

[0033] Figure 25 is Figure 24 a schematic exploded perspective view of the connector terminal assembly in

[0034] Figure 26 is Figure 25 a schematic side view of the connector terminal assembly in

[0035] Figure 27 is Figure 25 a schematic perspective view of the jack contact from another angle in

[0036] Figure 28 is Figure 27 a schematic perspective view of the jack contact from another angle in

[0037] Figure 29 is Figure 28 a cross-sectional view of the jack contact in

[0038] Figure 30 is Figure 24 a cross-sectional view of the connector terminal in

[0039] Figure 31 It is a schematic perspective view of a connector terminal assembly provided by the fifth embodiment of the present application.

[0040] Figure 32 is Figure 31 a schematic side exploded view of the connector terminal assembly in

[0041] Figure 33 is Figure 32 a schematic perspective view of the jack contact in

[0042] Figure 34 is Figure 33 a schematic perspective view of the jack contact from another angle in

[0043] Figure 35 is Figure 34 a cross-sectional view of the jack contact in

[0044] Figure 36 is Figure 31 a cross-sectional view of the connector terminal assembly in

[0045] Figure 37 It is a side view of a connector terminal assembly provided by the sixth embodiment of the present application.

[0046] Figure 38 is Figure 37Exploded schematic diagram of the connector terminal assembly in

[0047] Figure 39 is Figure 38 One of the three-dimensional structural schematic diagrams of the connector pin in

[0048] Figure 40 is Figure 38 Another three-dimensional structural schematic diagram of the connector pin in

[0049] Figure 41 is Figure 40 One of the cross-sectional views of the connector pin in

[0050] Figure 42 is Figure 38 Three-dimensional structural schematic diagram of the jack contact in

[0051] Figure 43 is Figure 42 Three-dimensional structural schematic diagram of the jack contact from another perspective in

[0052] Figure 44 is Figure 43 One of the cross-sectional views of the jack contact in

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

[0054] Figure 46 is the exploded schematic diagram of the connector terminal assembly provided by the seventh embodiment of the present application.

[0055] Figure 47 is Figure 46 Three-dimensional structural schematic diagram of the connector pin in

[0056] Figure 48 is Figure 47 Three-dimensional structural schematic diagram of the connector pin from another perspective in

[0057] Figure 49 is Figure 47 One of the cross-sectional views of the connector pin in

[0058] Figure 50 is Figure 46 Three-dimensional structural schematic diagram of the jack contact in

[0059] Figure 51 is Figure 45 Three-dimensional structural schematic diagram of the jack contact from another perspective in

[0060] Figure 52 is Figure 46 One of the cross-sectional views of the jack contact in

[0061] Figure 53 is Figure 46 a cross-sectional view after the connector pin and the jack contact in [[]] are inserted into each other.

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

[0063] Figure 55 is Figure 54 an exploded schematic view of the connector terminal assembly in [[]].[[]]

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

[0065] Figure 57 is Figure 56 a three-dimensional structural schematic view of the connector pin in [[]].[[]]

[0066] Figure 58 is Figure 57 a three-dimensional structural schematic view of the connector pin from another perspective in [[]].[[]]

[0067] Figure 59 is Figure 58 a cross-sectional view of the connector pin in [[]].[[]]

[0068] Figure 60 is Figure 56 a three-dimensional structural schematic view of the jack contact in [[]].[[]]

[0069] Figure 61 is Figure 60 a three-dimensional structural schematic view of the jack contact from another perspective in [[]].[[]]

[0070] Figure 62 is Figure 61 a cross-sectional view of the jack contact in [[]].[[]]

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

[0072] Figure 64 is Figure 63 a side structural schematic view of the connector terminal assembly in [[]].[[]]

[0073] Figure 65 is Figure 64 an exploded schematic view of the connector terminal assembly in [[]].[[]]

[0074] Figure 66 is Figure 65 a three-dimensional structural schematic view of the connector pin in [[]].[[]]

[0075] Figure 67 Is Figure 65 The three-dimensional structure schematic diagram of the jack contact in

[0076] Figure 68 Is Figure 67 The three-dimensional structure schematic diagram of the jack contact in from another perspective.

[0077] Figure 69 Is Figure 68 One of the cross-sectional views of the jack contact in

[0078] Figure 70 Is one of the cross-sectional views of the connector terminal assembly provided by the eleventh embodiment of the present application.

[0079] Figure 71 Is Figure 70 The cross-sectional view of the jack contact in

[0080] Figure 72 Is Figure 71 One of the cross-sectional views of the housing of the jack contact in in one state

[0081] Figure 73 Is Figure 72 One of the cross-sectional views of the housing of the jack contact in in another state

[0082] Figure 74 Is the cross-sectional view of the jack contact provided by the twelfth embodiment of the present application.

[0083] Figure 75 Is the three-dimensional structure schematic diagram of the abutting member provided by the thirteenth embodiment of the present application.

[0084] Figure 76 Is Figure 75 The top structure schematic diagram of the abutting member in

[0085] Figure 77 Is the three-dimensional structure schematic diagram of the abutting member provided by the fourteenth embodiment of the present application.

[0086] Figure 78 Is Figure 77 The top structure schematic diagram of the abutting member in

[0087] Figure 79 Is the three-dimensional structure schematic diagram of the abutting member provided by the fifteenth embodiment of the present application.

[0088] Figure 80 Is Figure 79 The side structure schematic diagram of the abutting member in

[0089] Figure 81 Is the three-dimensional structure schematic diagram of the abutting member provided by the sixteenth embodiment of the present application.

[0090] Figure 82 This is a schematic perspective view of the abutting member provided by the seventeenth embodiment of the present application. Detailed implementation manners

[0091] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0092] It should be noted that the mention of "embodiment" or "implementation manner" in this document means that the specific features, structures or characteristics described in connection with the embodiment or implementation manner may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent 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 the present application are only for the purpose of description, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" refers to two or more, unless otherwise specifically defined. In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0094] Please refer to Figures 1-3, the connector terminal assembly 100 provided by the first embodiment of the present application includes a connector pin 30 and a jack contact 50, and the connector pin 30 and the jack 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 connection portion 36. The first insertion portion 32 is connected to one end of the second insertion portion 34, and the first connection portion 36 is connected to the 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 connection portion 36 are arranged along the axial direction of the connector pin 30, and the first insertion portion 32 can be elastically deformed radially. The jack contact 50 is used in cooperation with the connector pin 30. The jack contact 50 includes a first contact portion 52, a second contact portion 54, and a second connection portion 56. The second contact portion 54 is connected to one end of the first contact portion 52, and the second connection portion 56 is connected to the end of the second contact portion 54 away from the first contact portion 52. The first contact portion 52, the second contact portion 54, and the second connection portion 56 are arranged along the axis of the jack contact 50. The jack 501 of the jack contact 50 penetrates through the first contact portion 52, the second contact portion 54, and the second connection portion 56; the connector pin 30 is inserted into the jack 501 of the jack contact 50, and there is elastic contact between the first insertion portion 32 of the connector pin 30 and the second contact portion 54, and there is elastic contact between the second insertion portion 34 of the connector pin 30 and the first contact portion 52.

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

[0096] When the connector pin 30 of the present application is inserted into the jack 501 of the jack contact 50, since there is elastic contact between the first insertion portion 32 and the second contact portion 54 to form a contact pair, and there is elastic contact between the second insertion portion 34 and the first contact portion 52 to form another contact pair; therefore, the connector pin 30 and the jack contact 50 adopt a double-contact pair to form a cooperation. Compared with the prior art in which the pin and the contact assembly adopt a single-contact pair form, the connector pin 30 and the jack contact 50 of the present application adopt a double-contact pair form, which can reduce the contact resistance, improve the over-current capacity, have a lower temperature rise, and the connector terminal assembly 100 has fewer parts, a simple structure, and a lower manufacturing cost.

[0097] Such as Figure 3 and Figure 4As shown, the first plugging portion 32 is an elastic member. The outer contour of the first plugging portion 32 is an outer conical shape. The outer diameter D1 of the first plugging portion 32 near the plugging rod is smaller than the outer diameter D2 of the first plugging portion 32 far from the plugging rod. That is, the head of the first plugging portion 32 is large and the root is small. The "head" refers to the end far from the plugging rod, and the "root" refers to the end near the plugging rod. The first plugging portion 32 includes a plurality of first elastic arms 320. The second plugging portion 34 is a plugging rod with an equal diameter. One ends of the plurality of first elastic arms 320 are respectively connected to one end of the plugging rod, and the plurality of first elastic arms 320 are arranged in a circle at intervals around the circumference of the plugging rod. A clearance groove 321 is formed between every two adjacent first elastic arms 320. The plurality of first elastic arms 320 together enclose a clearance hole 323. The clearance groove 321 communicates with the clearance hole 323. The clearance hole 323 and the plugging rod are coaxial, so that the plurality of first elastic arms 320 can deform uniformly toward the center along the radial direction of the plugging rod. Since there is a clearance groove 321 between two adjacent first elastic arms 320 and the plurality of first elastic arms 320 enclose a clearance hole 323, it is convenient for the end of the first elastic arm 320 far from the plugging rod to move and elastically deform along the radial direction of the first plugging portion 32, so that the plurality of first elastic arms 320 can radially contract or expand. Through the deformation of the end of the first plugging portion 32 far from the plugging rod, it can cooperate with the plugging hole with an equal diameter, thereby realizing the elastic contact between the first plugging portion 32 and the inner wall of the plugging hole. In this embodiment, four first elastic arms 320 are provided at the end of the plugging rod facing away from the first connecting portion 36. The four first elastic arms 320 are arranged in a circle at equal intervals around the circumference of the plugging rod. A clearance groove 321 is formed between every two adjacent first elastic arms 320. The four first elastic arms 320 enclose a clearance hole 323. The thickness of the first elastic arm 320 gradually increases along the axial direction of the plugging rod from the plugging rod to the end far from the first connecting portion 36. The inner side surface of the first elastic arm 320 is parallel to the axis of the plugging rod, so that the outer diameter D1 of the first plugging portion 32 near the plugging rod is smaller than the outer diameter D2 of the end far from the plugging 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 in the middle are often provided in the first plugging portion 32. The structure of the first plugging portion 32 with a large head and a small root can cooperate with the plugging hole with an equal diameter through the deformation of the head, simplifying the processing of the plugging hole.

[0098] In other embodiments, the second plugging portion 34 can also be a conical plugging rod.

[0099] Specifically, the first elastic arm 320 is an arc plate. The inner arc surface of the arc plate is parallel to the outer peripheral surface of the insertion rod, and the outer arc surface of the arc plate is inclined relative to the axis of the insertion rod. A guiding surface 324 is provided at the outer edge of the end of the first elastic arm 320 away from the insertion rod. The guiding surface 324 can be, but is not limited to, a chamfer, a fillet, or a tapered surface, etc. Optionally, the insertion rod is a rod body with a constant diameter. A counterbore 340 is provided at the end surface of the insertion rod close to the first insertion portion 32. The avoidance hole 323 communicates with the counterbore 340, and the avoidance hole 323 and the counterbore 340 are coaxial. The avoidance groove 321 can extend to be close to the counterbore 340; to ensure that the first elastic arm 320 can be deformed from the end close to the insertion 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 insertion rod can be a tapered rod. Specifically, the diameter of the tapered rod close to the first insertion portion 32 is smaller than the diameter close to the first connection portion 36, or the diameter of the tapered rod close to the first insertion portion 32 is larger than the diameter close to the first connection portion 36. A first fixing protrusion 342 is provided at one end of the outer peripheral surface of the insertion rod close to the first connection portion 36. The first fixing protrusion 342 surrounds the circumference of the insertion rod in a circle. Specifically, the first fixing protrusion 342 can be, but is not limited to, a conical ring or a circular ring, etc. The first fixing protrusion 342 is used to form an interference fit with the rubber core that the connector pin 30 mates with to generate a fixing force, which can prevent the connector pin 30 from rotating circumferentially or moving axially, and plays a role in pre-fixing the pin.

[0100] The first connection portion 36 is used to connect with a wire to transmit current. In this embodiment, the first connection portion 36 is a welding cup for soldering with the wire with tin. The insertion rod and the wire pressing cylinder are coaxial, and the outer diameter of the insertion rod is smaller than the outer diameter of the wire pressing cylinder. A positioning table 362 is formed between the first connection portion 36 and the insertion rod, which serves as a stop step to prevent the connector pin 30 from being pressed into the rubber core that mates with it too much.

[0101] Such as Figure 3 And Figures 5-6As shown, the second contact portion 54 is a contact cylinder, the first contact portion 52 is connected to one end of the contact cylinder, and the first contact portion 52 includes a plurality of first elastic pieces 520, one end of each of the plurality of first elastic pieces 520 is respectively connected to one end of the contact cylinder, and the plurality of first elastic 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 elastically deformed in the radial direction. The space surrounded by the plurality of first elastic pieces 520 and the inner cavity of the contact cylinder form the plug hole 501 of the plug-in contact member 50. There is an avoidance groove 521 between each two adjacent first elastic pieces 520, and the plurality of first elastic pieces 520 jointly surround one end of the plug hole 501, and the avoidance groove 521 is connected to the plug hole 501, and the first plug-in portion 32 and the second plug-in portion 34 can be inserted into the plug hole 501, so that the plurality of first elastic pieces 520 elastically press against the second plug-in portion 34. In this embodiment, a plurality of first elastic pieces 520 are evenly spaced and arranged in a circle around the circumference of the contact cylinder. Specifically, ten first elastic pieces 520 are evenly spaced and arranged in a circle around the circumference of the contact cylinder. It can be understood that the number of first elastic pieces 520 can be selected according to actual needs. The socket contact 50 is integrally formed, the first contact portion 52 is scattered along the axial direction, and the plurality of first elastic pieces 520 are evenly distributed around the circumference of the second contact portion 54.

[0102] Optionally, the first elastic piece 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, one end of the connecting strip 522 away from the guide strip 524 is connected to the second contact portion 54, one end of the connecting strip 522 close to the guide strip 524 is inclined toward the axis of the contact cylinder, the guide strip 524 extends from the connecting strip 522 to the axis away from the contact cylinder, and multiple guide strips 524 are radial; each connecting strip 522 forms a contact section 525 at the connection with the corresponding guide strip 524, and multiple contact sections 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 plug-in portion 34. The connecting strip 522 and the guide strip 524 have an arc transition. The first contact portion 52 is provided with an inlet 527 at one end of the first throat hole 526 away from the second contact portion 54. The inlet 527 is trumpet-shaped, which facilitates the mating connector pin 30 and the socket contact 50 to open the plurality of first elastic pieces 520 when mating, thereby achieving contact between the contact section 525 and the second plug-in portion 34. The connecting strip 522 is used to provide a holding 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 in direct proportion to the holding force, that is, when the connecting strip 522 is shorter, the holding force provided by the first elastic piece 520 is greater, and when the connecting strip 522 is longer, the holding force provided by the first elastic piece 520 is smaller.

[0103] Optionally, the second contact portion 54 is cylindrical, and the inner diameters of the opposite ends of the cylindrical shape are the same; the middle portion of the second contact portion 54 is recessed into its inner cavity to form a contact neck 542, and the inner diameter D3 of the contact neck 542 is smaller than the inner diameter of the first throat diameter hole 526; that is, the middle portion of the contact cylinder is recessed into its inner cavity to form a contact neck 542, the inner diameters of the opposite ends of the contact cylinder are both 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 diameter hole 526, the inner diameter of the first throat diameter 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 respectively provided at the opposite axial 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 through the inclined surface 544. In other embodiments, the inner diameter of the second contact portion 54 near one end of the first contact portion 52 is slightly smaller than the inner diameter of the second contact portion 54 away from one end of the first contact portion 52. The outer diameter of the first insertion portion 32 at the end of the guiding 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 guiding 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 guiding surface 324 slidably abuts 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 deepens into the inner cavity of the contact neck 542, the plurality of first elastic arms 320 gradually contract towards 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 portion 57 connected between the second contact portion 54 and the second connecting portion 56. Specifically, the second connecting portion 56 is cylindrical, and the positioning portion 57 is a stop convex ring connected between the second contact portion 54 and the second connecting portion 56. The stop convex ring is used to make the socket contact 50 and the rubber core that cooperate with it have an interference fit to generate a fixing force, so that the socket contact 50 is fixedly connected to the rubber core, which can prevent the socket contact 50 from rotating in a circle or moving axially. The second connection part 56 is used to realize the electrical connection between the socket contact 50 and the wire, so as to transmit current; the second connection part 56 includes a connection tube 561, a cover plate 563 and a connection piece 565, the connection tube 561 is in the shape of a tube with equal inner diameter, one end of the connection tube 561 along its axial direction is fixedly connected to the positioning part 57, the connection piece 565 and the cover plate 563 are fixedly connected to the end of the connection tube 561 away from the connection tube 561, and the inner cavity of the connection tube 561 is connected to the inner cavity of the second contact part 54. In this embodiment, the connection tube 561 is coaxial with the second contact part 54. When the socket contact 50 is installed in the rubber core, the positioning part 57 is positioned with the rubber core. The outer circumference of the cover plate 563 is fitted with the inner circumference of the connection tube 561 to close the inner cavity of the connection tube 561, so that the socket contact 50 will not leak into the second contact part 54 when dispensing or encapsulating.

[0105] The connecting piece 565 is in the shape of an arc sheet, the connecting piece 565 is coaxial with the connecting tube 561, and the outer circumferential surface of the connecting piece 565 is flush with the outer circumferential surface of the connecting tube 561. The inner circumferential surface of the connecting piece 565 is provided with a plurality of anti-slip protrusions 567, each of which extends along the circumference of the connecting piece 565, and the plurality of anti-slip protrusions 567 are arranged at intervals along the axial direction of the connecting tube 561. When the connecting piece 565 is welded and fixed to the wire, current transmission can be achieved, and the anti-slip protrusions 567 on the connecting piece 565 can increase the connection force of the connecting piece 565 and the wire. In other embodiments, the inner circumferential surface of the connecting piece 565 can also be provided with a plurality of grooves, each of which extends along the circumference of the connecting piece 565, and the plurality of grooves are arranged at intervals along the X-axis direction.

[0106] like Figure 3 and Figure 7As shown, when the connector pin 30 is inserted into the jack contact 50, the first insertion portion 32 of the connector pin 30 is inserted into the jack 501 from the inlet 527 of the jack contact 50, so that the first insertion portion 32 passes through the first throat diameter hole 526, and the guiding 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 guiding surface 324 of the first elastic arm 320, 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 until the diameter of the end of the first insertion portion 32 away from the insertion rod is equal to the inner diameter of the contact neck 542 of the jack, realizing that the first contact portion 52 is inserted into the inner cavity of the contact neck 542, and the first insertion portion 32 is elastically in 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 guiding strip 524, causing the first elastic piece 520 to elastically deform, and the multiple first elastic pieces 520 of the first contact portion 52 expand outwards until the multiple contact segments 525 are elastically in contact with the outer peripheral surface of the insertion rod.

[0107] In the present application, the first insertion portion 32 of the connector pin 30 is elastically in contact with the inner peripheral surface of the contact neck 542 through the first elastic piece 520, and the outer peripheral surface of the insertion rod is elastically in contact with the multiple first elastic pieces 520 of the first contact portion 52. By means of a double contact pair between the connector pin 30 and the jack contact 50, the contact resistance can be reduced, the overcurrent capacity can be improved, a lower coupling height can be obtained, the temperature rise is lower, and the number of parts of the connector terminal assembly 100 is small, the structure is simple, and the manufacturing cost is relatively low.

[0108] As Figure 8 Shown, the structure of the connector pin 30a in another embodiment of the present application is similar to the structure of the connector pin 30 in the first embodiment. The difference is that the structure of the first connection portion 36a of the connector pin 30a is slightly different from the structure of the first connection portion 36 of the connector pin 30. Specifically, the first connection portion 36a is a connection column, and a threaded hole is provided on the end surface of the connection column facing away from the insertion rod. The wire is first connected to a transfer crimping terminal, and then the transfer crimping terminal is locked to the threaded hole by a screw to realize the connection between the connector pin 30a and the wire, so as to transmit current.

[0109] As Figure 9As shown, the structure of the connector pin 30b in another embodiment of the present application is similar to that of the connector pin 30 in the first embodiment. The difference lies in that the structure of the first connecting portion 36b of the connector pin 30b is slightly different from that of the first connecting portion 36 of the connector pin 30. Specifically, the first connecting portion 36b is a first connecting sleeve. A connecting hole 363 is provided at one end of the first connecting sleeve facing away from the plugging rod, and an electroplating process hole 364 is provided at one end of the first connecting sleeve close to the plugging rod. 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, thereby transmitting current.

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

[0111] As Figure 11 shown, the structure of the jack contact 50b in another embodiment of the present application is similar to that of the jack contact 50 in the first embodiment. The difference lies in that the specific structure of the second connecting portion 56b of the jack contact 50b is slightly different from that of the second connecting portion 56 of the jack contact 50. Specifically, the connecting piece 565b of the second connecting portion 56b in this embodiment uses a rectangular welding plate, and the welding plate is connected to the wire by ultrasonic welding, thereby transmitting current.

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

[0113] Please refer to Figures 12-15, the structure of the connector terminal assembly 100b provided in the second embodiment of the present application is similar to the structure 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 the structure of the connector pin in the first embodiment. The difference lies in that: the structure of the jack contact 50c in the second embodiment is slightly different from the structure of the jack contact 50 in the first embodiment; specifically, the first contact portion 52a of the jack contact 50c in the second embodiment includes a first contact cylinder 528 with an equal inner diameter and an elastic first contact ring 529. The first contact cylinder 528 is sleeved on the first contact ring 529. 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 54a is a second contact cylinder with an equal inner diameter. The second contact cylinder is coaxial with the first contact cylinder 528. The throat diameter of the first contact neck 529a is greater 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 first insertion portion 32 away from one end of the second contact portion 54, and 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 jack contact 50c, the first insertion portion 32 is in elastic contact with the inner peripheral surface of the second contact portion 54a, and the first contact neck 529a is in elastic contact with the outer peripheral surface of the second insertion portion 34, so as to realize the double contact pair between the connector pin 30 and the jack contact 50c.

[0114] Optionally, an installation groove 5282 is provided on the inner peripheral surface of the first contact cylinder 528. The installation groove 5282 surrounds the circumference of the first contact cylinder 528. The first contact ring 529 is positioned in the installation groove 5282. There is a clearance 5292 between the outer peripheral surface of the first contact neck 529a and the outer peripheral surface of the first contact cylinder 528 to facilitate the elastic deformation of the first contact neck 529a. The outer peripheral surface of the first contact cylinder 528 is coplanar with the outer peripheral surface of the second contact cylinder. A positioning cylinder 5284 is provided at one end of the first contact cylinder 528 facing 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 installation 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 first contact ring 529 from being pulled out by the connector pin during the plugging and unplugging process.

[0115] As Figure 16As shown, the first contact ring 529 includes two first connection rings 5293 axially spaced from each other and a plurality of first spring strips 5294. The two first connection rings 5293 are coaxial. The opposite ends of the plurality of first spring strips 5294 are respectively connected to the two first connection rings 5293. The plurality of first spring strips 5294 are arranged in a circle at intervals around the circumference of the first connection ring 5293. The middle part of each first spring strip 5294 bends towards the axis of the first connection ring 5293. The middle parts of the plurality of first spring strips 5294 enclose a first contact neck 529a. In this embodiment, the plurality of first spring strips 5294 are arranged in a circle at evenly spaced intervals around the circumference of the first connection ring 5293. The distance between two adjacent first spring strips 5294 ranges from greater than or equal to 0.6 times the thickness of the first spring strip 5294 to less than or equal to 2 times the thickness of the first spring strip 5294, which can improve the current-carrying capacity. The smaller the distance between two adjacent first spring strips 5294, the better the current-carrying capacity of the jack contact 50c. In the natural state, the outer diameter of the first connection 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 in the inner cavity of the first contact cylinder 528. Specifically, since the first contact ring 529 will produce springback after being coiled, a seam will be formed at the butt joint. When the first contact ring 529 is installed into the first contact cylinder 528, the first contact ring 529 needs to be compressed first. At this time, the seam will become smaller. After being installed, the first contact ring 529 rebounds naturally and fits with the first contact cylinder 528. In this embodiment, the plurality of first spring strips 5294 are arranged in a spiral around the circumference of the first connection ring 5293, so that the throat diameter of the first contact ring 529 is smaller than the inner diameter of the first connection 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 of the middle part of the first contact ring 529, or the inner diameter closer to or farther from the middle part of the first contact ring 529.

[0116] Optionally, a plurality of first operation grooves 5295 are provided on the end surface of the first connection ring 5293 facing away from the first elastic strip 5294. The first operation grooves 5295 penetrate through the inner circumferential surface and the outer circumferential surface of the first connection ring 5293, and the plurality of first operation grooves 5295 are arranged at intervals around the circumferential direction of the first connection ring 5293. When the first contact ring 529 of this embodiment is processed, a torsion tool (servo motor or mechanical transmission mechanism) is used to position both first connection rings 5293, that is, the torsion tool is respectively positioned in the first operation grooves 5295 of the two first connection rings 5293, and then the torsion tool drives the two first connection rings 5293 to rotate in opposite directions respectively, so that the plurality of first elastic strips 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 range of the torsion angle is between 10° and 80°. The torsion angle of the first contact ring 529 with a larger throat diameter is set relatively larger, and the torsion angle of the terminal with a smaller throat diameter is set relatively smaller. The throat diameter of the first contact ring 529 determines the clamping force when it contacts the terminal to be mated. The larger the torsion angle, the greater the clamping force. A larger clamping force can enable the first contact ring 529 to have better contact with the second insertion portion 34, and thus a lower contact resistance can be obtained.

[0117] As Figures 12-15 shown, the structure of the second connection portion 56c of the jack contact 50c is similar to the structure of the second connection portion 56 of the jack contact 50 in the first embodiment. The difference is that: the second connection portion 56c is a first connection sleeve, one end of the first connection sleeve is connected to one end of the second contact cylinder, the first connection sleeve and the second contact cylinder are coaxial, and the wire is inserted into the inner cavity of the first connection sleeve and fixed by welding. A second welding hole 566 is provided on the second connection portion 56c, the wire is inserted into the inner cavity of the second connection portion 56c, and the wire is welded to the second connection portion 56c through the second welding hole 566. A positioning portion 57 is provided between the second contact portion 54a and the second connection portion 56c. When the jack contact 50c is installed on the rubber core, the positioning portion 57 is positioned with the rubber core; in this embodiment, the positioning portion 57 is a positioning convex ring surrounding the circumferential direction of the second connection portion 56c.

[0118] As Figure 12 and Figure 17As shown, when the connector pin 30 is inserted into the jack contact 50c, the first insertion portion 32 of the connector pin 30 is inserted into the first contact cylinder 528 of the jack 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, such that the outer peripheral surface of the second insertion portion 34 slidably abuts against a plurality of first elastic strips 5294, and the plurality of first elastic strips 5294 are elastically deformed and move towards the avoidance gap 5292 until the plurality of first elastic strips 5294 are elastically in contact with the outer peripheral surface of the insertion rod; at the same time, the ends of the plurality of first elastic arms 320 away from the insertion rod slidably abut against the inner cavity wall of the second contact portion 54a, such that the ends of the plurality of first elastic arms 320 away from the insertion 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 the present application, the first insertion portion 32 of the connector pin 30 and the second contact portion 54a are elastically in contact through the first elastic arms 320 and the inner peripheral surface of the second contact portion 54a, and the outer peripheral surface of the insertion rod is elastically in contact with the plurality of first elastic strips 5294, such that a double contact pair is formed between the connector pin 30 and the jack contact 50c, which can reduce the contact resistance, improve the overcurrent capacity, have a lower temperature rise, and the connector terminal assembly 100 has fewer parts, a simple structure, and a lower manufacturing cost.

[0120] Please refer to Figures 18-23The structure of the connector terminal assembly 100c provided in the third embodiment of the present application is similar to the structure 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, which will not be repeated 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, and 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. The middle part of the first contact ring 529 is sunken into the 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, which 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 plug-in 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 plug-in rod. A second fixing protrusion 545 is provided at the end of the outer circumference of the second contact portion 54a away from the first contact cylinder 528. The second fixing protrusion 545 is arranged around 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 make the plug-in contact 50d and the rubber core matched therewith have an interference fit to generate a fixing force, which can prevent the plug-in contact 50d from rotating in a circle or moving in an axial direction.

[0121] The structure of the second connection part 56d in the third embodiment is slightly different from that of the second connection part in the second embodiment. Specifically, the second connection part 56d in the third embodiment is a wire barrel, which is connected to the wire material by crimping. The crimping can be but not limited to point crimping, pit crimping or hexagonal crimping. The plug-in rod and the wire barrel are coaxial, the outer diameter of the plug-in rod is smaller than the outer diameter of the wire barrel, the wire barrel is coaxial with the second contact part 54a, and a circle of clamping grooves 562 are provided on the outer circumference of the wire barrel to form a positioning part 57 on the outer circumference of the wire barrel; when the socket contact 50d is installed in the rubber core, the positioning part 57 and the clamping groove 562 are both positioned with the rubber core. The inner cavity of the second contact part 54a away from the end of the first contact barrel 528 is closed by the second connection part 56d, so that the socket contact 50d will not leak glue to the inner cavity of the second contact part 54a when dispensing or encapsulating.

[0122] The plugging 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.

[0123] Between the first insertion part 32 of the connector pin 30 and the second contact part 54a in the present application, elastic contact is made between the first elastic arm 320 and the inner peripheral surface of the second contact part 54a, and elastic contact is made between the outer peripheral surface of the insertion rod and a plurality of first elastic strips 5294, so that a double contact pair is formed between the connector pin 30 and the jack contact 50d, which can reduce the contact resistance, improve the overcurrent capacity, result in a lower temperature rise, and the connector terminal assembly 100c has a small number of parts, a simple structure, and a low manufacturing cost.

[0124] Please refer to Figures 24-30The structure of the connector terminal assembly 100d provided in the fourth embodiment of the present application is similar to the structure 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, which will not be repeated 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 adopts a guide ring 5201 to replace the guide strip 524 of the socket contact in the first embodiment. Specifically, the fourth embodiment The first contact portion 52b in the embodiment includes a plurality of first elastic pieces 520a and a guide ring 5201. One end of the plurality of first elastic pieces 520a is respectively connected to one end of the second contact portion 54. The plurality of first elastic pieces 520a are arranged in a circle around the circumference of the second contact portion 54 at intervals. The guide ring 5201 is connected to one end of the plurality of first elastic pieces 520 away from the contact cylinder. The guide ring 5201 and the second contact portion 54 are coaxial. One end of each first elastic piece 520a away from the second contact portion 54 is inclined toward the axis of the guide ring 5201. An avoidance groove 521 is formed between each two adjacent first elastic pieces 520. A second throat diameter hole 5203 is formed at one end of the guide ring 5201 close to the first elastic piece 520a. A guide hole 5204 is formed at one end of the guide ring 5201 away from the first elastic piece 520a. The inner diameter of the second throat diameter 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 end of the first plug-in portion 32 away from the plug-in rod, the inner diameter of the second throat hole 5203 is equal to or slightly smaller than the outer diameter of the plug-in rod, and the inner diameter of the end of the guide hole 5204 away from the first elastic sheet 520a is larger than the outer diameter of the first plug-in portion 32 away from the second plug-in portion 34. In this embodiment, the guide ring 5201 is trumpet-shaped, and the guide ring 5201 includes a guide ring 5205 and a connecting ring 5206. The connecting ring 5206 is connected to one end of the guide ring 5205, and the connecting ring 5206 and the guide ring 5205 are coaxial. The ends of the plurality of first elastic sheets 520a away from the second contact portion 54 are respectively connected to the ends of the connecting ring 5206 away from the guide ring 5205, and the inner diameter of the guide ring 5205 gradually increases along its axial direction toward the end away from the connecting ring 5206. When the connector pin 30 is plugged into the first contact portion 52b and the second contact portion 54 of the socket contact 50e, the first plug-in portion 32 elastically contacts the inner circumference of the second contact portion 54, and the first contact portion 52b elastically contacts the outer circumference of the plug-in rod, so as to realize a double contact pair between the connector pin 30 and the socket contact 50e.

[0125] like Figures 24-26 and Figure 30As shown in the figure, when the connector pin 30 is inserted into the jack contact 50e, the first insertion portion 32 is inserted from the guiding hole 5204 of the guiding ring 5201 of the jack contact 50e. The guiding surfaces 324 of the plurality of first elastic arms 320 are slidably abutted against the inner circumferential surface of the guiding ring 5205, so that the ends of the plurality of first elastic arms 320 away from the insertion rod gradually contract towards the center until the first insertion portion 32 passes through the second throat diameter hole 5203. Continue to insert the connector pin 30 into the jack contact 50e until the plurality of first elastic arms 320 are inserted into the inner cavity of the contact neck 542, so that the ends of the plurality of first elastic arms 320 away from the insertion rod gradually contract towards the center until the first elastic arms 320 are elastically abutted against the inner circumferential surface of the contact neck 542, realizing the elastic contact between the first insertion portion 32 and the inner circumferential surface of the contact neck 542. At the same time, the guiding ring 5201 is sleeved on the insertion rod, and the outer circumferential surface of the insertion rod abuts against the plurality of first elastic pieces 520a, so that the plurality of first elastic pieces 520a are elastically deformed and expand outwards until the first contact portion 52b is elastically contacted with the outer circumferential surface of the insertion rod.

[0126] In the connector pin 30 of the present application, the first insertion portion 32 and the second contact portion 54 are elastically contacted through the first elastic arms 320 and the inner circumferential surface of the contact neck 542, and the outer circumferential surface of the insertion rod is elastically contacted with the plurality of first elastic pieces 520a of the first contact portion 52. Through the double contact pair between the connector pin 30 and the jack contact 50e, the contact resistance can be reduced, the overcurrent capacity can be improved, the temperature rise is lower, and the number of parts of the connector terminal assembly 100d is small, the structure is simple, and the manufacturing cost is low. Secondly, the processing of the jack contact 50e does not require mold opening, and the manufacturing cost is low.

[0127] Please refer to Figures 31-36, the structure of the connector terminal assembly 100e provided in the fifth embodiment of the present application is similar to the structure 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 the structure of the connector pin in the first embodiment. The difference lies in that the structure of the jack contact 50f in the fifth embodiment is slightly different from the structure of the jack contact in the first embodiment. Specifically, the first contact portion 52c of the jack contact 50f in the fifth embodiment includes a plurality of first elastic pieces 520b, and the second contact portion 54a is a contact cylinder with an equal inner diameter. One ends of the plurality of first elastic pieces 520b are respectively connected to one end of the second contact portion 54a. The plurality of first elastic pieces 520 are arranged in a circle at intervals along the circumferential direction of the contact cylinder. There is an avoidance groove 521 between every two adjacent first elastic pieces 520b. One end of the first elastic piece 520b far from the contact cylinder is inclined towards the axis of the contact cylinder. The inner diameter formed by the ends of the plurality of first elastic pieces 520b far from the second contact portion 54a is smaller than the inner diameter formed by the ends of the plurality of first elastic pieces 520 close to the second contact portion 54a. In this embodiment, the plurality of first elastic pieces 520b are arranged in a circle at evenly spaced intervals along the circumferential direction of the contact cylinder, and each first elastic piece 520b is in the shape of an arc piece. The ends of the plurality of first elastic pieces 520b far from the second contact portion 54a enclose a first throat diameter hole 526c. The inner diameter of the first throat diameter hole 526c is larger than the inner diameter of the second contact portion 54a, and the first throat diameter hole 526c is smaller than the outer diameter of the second insertion portion 34.

[0128] A second fixing protrusion 545 is provided at one end of the outer peripheral surface of the second contact portion 54a far from the first elastic piece 520b. The second fixing protrusion 545 surrounds the second contact portion 54a in a circle along the circumferential direction. Specifically, the second fixing protrusion 545 can be but is not limited to a conical ring or a circular ring, etc. The second fixing protrusion 545 is used to generate a fixing force through an interference fit with the rubber core with which the jack contact 50f cooperates, and can prevent the jack contact 50f from rotating circumferentially or moving axially.

[0129] The structure of the second connection portion 56d in the fifth embodiment is slightly different from the structure of the second connection portion in the first embodiment. Specifically, the second connection portion 56d in the fifth embodiment is a wire pressing cylinder, and the connection with the wire is achieved through crimping. The crimping can be but is not limited to spot crimping, pit crimping, or hexagonal crimping, etc. The insertion rod and the wire pressing cylinder are coaxial. The outer diameter of the insertion rod is smaller than the outer diameter of the wire pressing cylinder. The wire pressing cylinder and the second contact portion 54a are coaxial. At least a pair of clamping grooves 562 are provided on the outer peripheral surface of the wire pressing cylinder to form a positioning portion 57 on the outer peripheral surface of the wire pressing cylinder. When the jack contact 50f is installed in the rubber core, both the positioning portion 57 and the clamping groove 562 are positioned with the rubber core. The inner cavity at one end of the second contact portion 54a facing away from the first elastic piece 520b is closed by the second connection portion 56d, so that the jack contact 50f will not leak glue into the inner cavity of the second contact portion 54f during dispensing or encapsulation.

[0130] like Figures 37-44 As shown, the structure of the connector terminal assembly 100f provided in the sixth embodiment of the present application is similar to the structure of the connector terminal assembly 100 provided in the first embodiment, except that: the structure of the connector pin 30c in the sixth embodiment is slightly different from the connector pin in the first embodiment, and the structure of the socket contact 50g in the sixth embodiment is slightly different from the structure of the socket contact 50 in the first embodiment; specifically, the first connecting portion 36e has a first connecting sleeve, one end of the first connecting portion 36e is connected to an end of the second plug-in portion 34 away from the first plug-in portion 32, and the wire is inserted into the first connecting sleeve and fixed by welding, thereby transmitting current. The first connecting portion 36e includes a positioning column 3681, a first connecting sleeve 3682 and a positioning ring 3684. One end of the positioning column 3681 is connected to the end of the second plug-in portion 34 away from the first plug-in portion 32. One end of the first connecting sleeve 3682 is connected to the end of the positioning column 3681 away from the second plug-in portion 34. The second plug-in portion 34, the positioning column 3681 and the first connecting sleeve 3682 are coaxial. The outer diameter of the positioning column 3681 is greater than the outer diameter of the second plug-in portion 34, so as to form a first positioning step between the positioning column 3681 and the second plug-in portion 34. The outer diameter of the first connecting sleeve 3682 is larger than the outer diameter of the positioning post 3681, so as to form a second positioning step between the first connecting sleeve 3682 and the positioning post 3681. The positioning ring 3684 is convexly arranged on the outer peripheral surface of the first connecting sleeve 3682, close to one end of the positioning post 3681. The first positioning step, the second positioning step and the positioning ring 3684 are used to make the rubber core of the connector pin 30c and the rubber core cooperate with it to produce a fixing force, so that the connector pin 30c is fixedly connected with the rubber core, which can prevent the connector pin 30c from rotating in the circumference or moving in the axial direction. The first connecting sleeve 3682 is provided with a first welding hole 366, and the wire is inserted into the inner cavity of the first connecting sleeve 3682 and is 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 an end of the second contact portion 54c away from the first contact portion 52d. The second contact portion 54c is a contact tube, the second connecting portion 56d is a connecting tube, the first contact portion 52d includes a plurality of first elastic sheets 520c, one end of each of the plurality of first elastic sheets 520c is respectively connected to one end of the contact tube, and the plurality of first elastic sheets 520c are arranged in a circle around the circumference of the contact tube at intervals from each other; when the connector pin 30c is plugged into the first contact portion 52d and the second contact portion 54c of the socket contact 50g, the first plug-in portion 32 is elastically in contact with the inner circumference of the second contact portion 54c, that is, the plurality of first elastic arms 320 are elastically pressed against the inner circumference of the contact tube, and the first contact portion 52d is elastically in contact with the outer circumference of the plug-in rod, that is, the plurality of first elastic sheets 520c are elastically in contact with the outer circumference of the plug-in rod, so as to realize a double contact pair between the connector pin 30c and the socket contact 50g.

[0132] When the connector pin 30c and the socket contact 50g in this embodiment are plugged into each other, the first plug-in portion 32 and the second contact portion 54c are in elastic contact to form a contact pair, and the first contact portion 52d and the plug-in rod are in elastic contact to form another contact pair; therefore, the connector pin 30c and the socket contact 50g are matched with each other using a double contact pair. Compared with the pin and contact assembly in the prior art that adopt a single contact pair, the connector pin 30c and the socket contact 50g of the present application adopt a double contact pair, which can reduce contact resistance, improve overcurrent capacity, and have a lower temperature rise. In addition, the number of parts of the connector terminal assembly 100f is small, the structure is simple, and the manufacturing cost is low. In addition, the plug-in and pull-out force between the connector pin 30c and the socket contact 50g in this embodiment is large, and the plug-in and pull-out life is long. At the same time, the throat of the reed is connected, which has a certain strength and is not easy to be damaged.

[0133] Optionally, the first elastic piece 520c is an arc-shaped piece, and a plurality of arc-shaped pieces are arranged in a circle around the circumference of the second contact part 54c to form a circular jack 501. The gaps between every two adjacent first elastic pieces 520c communicate with the jack 501; the inner diameter of the first contact part 52d is greater than the inner diameter of the second contact part 54c, that is, the inner diameter of the jack 501 is greater than the inner diameter of the contact cylinder, the inner diameter of the jack 501 is greater than the outer diameter of the first insertion part 32, the inner diameter of the jack 501 is less than the outer diameter of the insertion rod, and the outer diameter of the first insertion part 32 is less than the inner diameter of the second contact part 54c. The outer diameter of the second connecting part 56e is greater than the outer diameter of the second contact part 54c to form a positioning step between the second connecting part 56e and the second contact part 54c; the positioning part 57 is a positioning ring provided on the outer peripheral surface of the second connecting part 56e near one end of the second contact part 54c. Both the positioning step and the positioning ring are used for positioning with the rubber core.

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

[0135] Please refer to Figures 46-52The structure of the connector terminal assembly 100g provided in the seventh embodiment of the present application is 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 plug-in portion 32a, a second plug-in portion 34a and a first connecting portion 36, the first plug-in portion 32a is a first plug-in rod with the same outer diameter, and the second plug-in portion 34a can be radially elastically deformed. Specifically, the second plug-in portion 34a includes a second plug-in rod 343 and a second plug-in rod 344 disposed on the second plug-in rod 345. The elastic member 344 is provided on the outer peripheral surface of the second plug rod 343, and the elastic member 344 can be elastically deformed along the radial direction of the second plug rod 343; one end of the second plug rod 343 is connected to one end of the first plug portion 32a, one end of the first connecting portion 36 is connected to one end of the second plug rod 343 away from the first plug portion 32a, and the first plug rod, the second plug rod 343 and the first connecting portion 36 are coaxial; the first contact portion 52e is a first contact cylinder with the same inner diameter, the second contact portion 54d is an elastic second contact ring, one end of the first contact portion 52e is connected to one end of the second contact ring, one end of the second connecting portion 56 is connected to one end of the second contact portion 54d away from the first contact portion 52e, and the first contact cylinder, the second contact ring and the second connecting portion 56 are coaxial. The inner diameter of the first contact cylinder is larger than the throat diameter of the second contact ring, the inner diameter of the first contact cylinder is larger than the outer diameter of the first plug-in portion 32a, the inner diameter of the first contact cylinder is smaller than the outer diameter of the elastic member 344, and the outer diameter of the first plug-in portion 32a is smaller than the throat diameter of the second contact cylinder. When the connector pin 30d and the socket contact 50h are plugged into each other, the first plug-in portion 32a elastically contacts the second contact portion 54d, and the first contact portion 52e elastically contacts the second plug-in portion 34a, that is, the elastic member 344 elastically contacts the inner circumference of the first contact cylinder, so as to realize the double contact of the connector pin 30d and the socket contact 50h.

[0136] Since the first plug-in portion 32a and the second contact portion 54d are in elastic contact to form a contact pair, and the first contact portion 52e and the elastic member 344 are in elastic contact to form another contact pair, the connector pin 30d and the socket contact member 50h are matched with each other using a double contact pair. Compared with the pin and contact assembly in the prior art using a single contact pair, the connector pin 30d and the socket contact member 50h of the present application use a double contact pair, which can reduce contact resistance, improve overcurrent capacity, and reduce temperature rise. In addition, the connector terminal assembly 100g has a small number of parts, a simple structure, and a low manufacturing cost.

[0137] Optionally, a positioning groove 3432 is provided on the outer peripheral surface of the second insertion rod 343. The positioning groove 3432 surrounds the circumference of the second insertion rod 343 in a circle. The elastic member 344 is a lantern spring positioned in the positioning groove 3432. Specifically, the elastic member 344 includes fixed rings 3442 spaced apart from each other and a plurality of elastic bars 3443 connected between the two fixed rings 3442. The plurality of elastic bars 3443 surround the circumference of the fixed rings 3442 in a circle; the middle of each elastic bar 3443 is bent radially outward along the second insertion rod 343. In this embodiment, the plurality of elastic bars 3443 are evenly spaced around the circumference of the fixed rings 3442 in a circle. The outer diameter of the second insertion rod 343 is smaller than the outer diameter of the first connecting portion 36. A positioning platform 362 is formed between the first connecting portion 36 and the second insertion rod 343. The positioning platform 362 serves as a stop step; a first fixing protrusion 342 is provided at one end of the outer peripheral surface of the second insertion rod 343 close to the first connecting portion 36. The first fixing protrusion 342 surrounds the circumference of the second insertion rod 343 in a circle; the positioning platform 362 and the first fixing protrusion 342 are used to generate a fixing force by means of an interference fit with the travel of the glue core with which the connector pin 30d cooperates, and can prevent the connector pin 30d from rotating circumferentially or moving axially.

[0138] As Figures 50-52 shown, the second contact ring includes a plurality of third elastic pieces 546. The opposite ends of the plurality of third elastic pieces 546 are respectively connected between the first contact portion 52e and the second connecting portion 56. The plurality of third elastic pieces 546 are arranged in a circle at intervals around the circumference of the first contact portion 52e, so that the second contact ring can be elastically deformed radially. There is an avoidance groove between every two adjacent third elastic pieces 546. The plurality of third elastic pieces 546 together enclose a jack, and each avoidance groove communicates with the jack. When the connector pin 30d and the jack contact member 50h are inserted into each other, the first insertion portion 32a elastically abuts against the plurality of third elastic pieces 546, and the first contact cylinder elastically abuts against the elastic member 344. The middle part 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 elastic pieces 546 are evenly spaced and spirally arranged in a circle around the circumference of the first contact cylinder, so that the middle part of the second contact ring forms a second contact neck 5460. The throat diameter of the second contact ring refers to the minimum inner diameter of the second contact ring. The minimum inner diameter of the second contact ring can be the inner diameter of the middle part of the second contact ring, or the inner diameter close to or far from the middle part of the second contact ring. The jack contact member 50h is integrally formed, with low cost.

[0139] A plurality of first operation grooves 5295 are provided on the end surface of the first contact portion 52e facing away from the third elastic piece 546. The first operation grooves 5295 penetrate through the inner peripheral surface and the outer peripheral surface of the first contact portion 52e, and the plurality of first operation grooves 5295 are arranged at intervals around the circumferential direction of the first contact portion 52e. When machining the second contact ring of this embodiment, first fix the second connecting portion 56, and then use a torsion tool to clamp the first contact portion 52e, that is, the torsion tool is positioned in the first operation groove 5295, and then the torsion tool drives the first contact portion 52e to rotate. The first contact portion 52e then drives the plurality of third elastic pieces 546 of the second contact ring to rotate, so that the third elastic pieces 546 present a spiral structure. By controlling the torsion angle of the torsion tool, different throat diameters can be obtained, and the range of the torsion angle is between 10° and 80°. The torsion angle of the second contact ring with a larger throat diameter is set relatively larger, and the torsion 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 torsion angle, the greater the clamping force. A larger clamping force can enable the second contact ring to have better contact with the first insertion portion 32a, thereby obtaining a lower contact resistance.

[0140] As Figure 46 and Figure 53 shown, when the connector pin 30d is inserted into the jack contact 50h, the first insertion portion 32a of the connector pin 30d is inserted into the first contact cylinder of the jack contact 50h, 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. The first insertion portion 32a slidably abuts against the plurality of third elastic pieces 546, causing the third elastic pieces 546 to elastically deform, and the second contact ring expands away from the center, so that the second contact neck 5460 elastically contacts the first insertion portion 32a; at the same time, the inner peripheral surface of the first contact portion 52e slidably abuts against the elastic member 344, causing the plurality of elastic strips 3443 to 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 portion 52e until the plurality of elastic strips 3443 elastically contact the inner peripheral surface of the first contact cylinder.

[0141] As Figure 54As shown, the structure of the connector terminal assembly 100f provided in the eighth embodiment of the present application is similar to that 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 that of the connector pin in the seventh embodiment, and will not be described in detail here. The structure of the jack contact 50i in the eighth embodiment is slightly different from that of the jack contact in the seventh embodiment. Specifically, the jack contact 50i in the eighth embodiment includes a first contact portion 52f, a second contact portion 54e, and a second connection portion 56d. One end of the first contact portion 52f is connected to the second contact portion 54e, and the second connection portion 56d is connected to the end of the second contact portion 54e facing away from the first contact portion 52f. In this embodiment, the first contact portion 52f is a first contact cylinder with an equal inner diameter. 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 8 are coaxial. The outer peripheral surface of the first contact cylinder and the outer peripheral surface of the second contact cylinder 7 are coplanar. The inner diameter of the first contact cylinder is greater than the inner diameter of the second contact ring 548. The inner diameter of the first contact cylinder is greater than the outer diameter of the first insertion portion 32a. The inner diameter of the first contact cylinder is less than the outer diameter of the elastic member 344. The inner diameter of the second contact ring 548 is less 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 jack contact 50i are inserted into each other, the first insertion portion 32a is in elastic contact with the second contact ring 548, and the first contact portion 52f is in elastic contact with the elastic member 344, that is, the elastic member 344 is in elastic contact with the inner peripheral surface of the first contact cylinder, so as to realize a double-contact pair between the connector pin 30d and the jack contact 50i.

[0142] Since the first insertion portion 32a and the second contact ring 548 are in elastic contact to form a contact pair, and the first contact cylinder and the elastic member 344 are in elastic contact to form another contact pair; therefore, the connector pin 30d and the jack contact 50i adopt a double-contact pair to form a cooperation. Compared with the single-contact pair form of the pin and the contact assembly in the prior art, the connector pin 30d and the jack contact 50i of the present application adopt a double-contact pair form, which can reduce the contact resistance, improve the over-current capacity, have a lower temperature rise, and the connector terminal assembly 100f has fewer parts, a simple structure, and a lower manufacturing cost.

[0143] Optionally, the middle part 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 part 32a can be elastically connected to the third contact neck 5480. The second contact ring 548 includes two second connection rings 5482 spaced apart from each other along its axial direction and a plurality of fourth elastic pieces 5484. The two second connection rings 5482 are coaxial. The opposite ends of the plurality of fourth elastic pieces 5484 are respectively connected to the two second connection rings 5482. The plurality of fourth elastic pieces 5484 are arranged in a circle at intervals around the circumferential direction of the second connection ring 5482. The middle part of each fourth elastic piece 5484 is bent towards the axis of the second connection ring 5482, and the middle parts of the plurality of fourth elastic pieces 5484 enclose the third contact neck 5480. In this embodiment, the plurality of fourth elastic pieces 5484 are arranged in a circle at evenly spaced intervals around the circumferential direction of the second connection ring 5482. The range of the distance between two adjacent fourth elastic pieces 5484 is greater than or equal to 0.6 times the thickness of the fourth elastic piece 5484 and less than or equal to 2 times the thickness of the fourth elastic piece 5484. The smaller the distance between two adjacent fourth elastic pieces 5484, the better the current-carrying capacity of the jack contact 50i. A positioning groove is provided on the inner peripheral surface of the second contact cylinder 7. The positioning groove surrounds the circumferential direction of the second contact cylinder 7 in a circle. The outer diameter of the second connection 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, the plurality of fourth elastic pieces 5484 are arranged in a spiral circle around the circumferential direction of the second connection ring 5482, so that the throat diameter of the second contact ring 548 is smaller than the inner diameter of the second connection ring 5482; the throat diameter of the second contact ring 548 refers to the minimum inner diameter of the second contact ring 548. The minimum inner diameter of the second contact ring 548 can be the inner diameter of the middle part of the second contact ring 548, or the inner diameter closer to or farther from the middle part of the second contact ring 548.

[0144] Optionally, a plurality of second operation grooves 5485 are provided on the end surface of the second connection ring 5482 facing away from the fourth elastic piece 5484. The second operation grooves 5485 penetrate through the inner circumferential surface and the outer circumferential surface of the second connection ring 5482, and the plurality of second operation grooves 5485 are arranged at intervals around the circumferential direction of the second connection ring 5482. When the second contact ring 548 of this embodiment is processed, first fix one of the second connection rings 5482 firmly, and then use a twisting tool (servo motor or mechanical transmission mechanism) to clamp the other second connection ring 5482, that is, the twisting tool is positioned in the second operation groove 5485, and then the twisting tool drives the other second connection ring 5482 to rotate, and the other second connection ring 5482 drives the plurality of fourth elastic pieces 5484 of the second contact ring 548 to rotate, so that the plurality of fourth elastic pieces 5484 present a spiral structure. By controlling the twisting angle of the twisting tool, different throat diameters can be obtained, and the range of the twisting angle is between 10° and 80°. The twisting angle of the second contact ring 548 with a larger throat diameter is set relatively larger, and the twisting angle of the terminal with a smaller throat diameter is set relatively smaller. The throat diameter of the second contact ring 548 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 enable the second contact ring 548 to have a better contact with the first insertion part 32a, thereby obtaining a lower contact resistance.

[0145] The second connection part 56d is a wire pressing cylinder, and the connection with the wire is realized by crimping, and the crimping can be but not limited to point crimping, pit crimping or hexagonal crimping, etc. The second contact cylinder 7 and the wire pressing cylinder are coaxial, and a circumferential clamping groove 562 is provided on the outer circumferential surface of the wire pressing cylinder to form a positioning part 57 on the outer circumferential surface of the wire pressing cylinder; a second fixing protrusion 545 is provided at one end of the outer circumferential surface of the second contact cylinder 7 close to the second connection part 56d, and the second fixing protrusion 545 surrounds the second contact cylinder 7 in a circumferential direction. When the jack contact 50i is installed in the rubber core, the positioning part 57, the second fixing protrusion 545 and the clamping groove 562 are all positioned with the rubber core. The second connection part 56d closes the inner cavity at one end of the second contact cylinder 7 facing away from the first contact cylinder 528, so that when dispensing glue or encapsulating glue, the glue will not leak into the inner cavity of the second contact cylinder 7.

[0146] As Figure 54 and Figure 55As shown, when the connector pin 30d is inserted into the jack contact 50i, the first insertion part 32a of the connector pin 30d is inserted into the first contact cylinder of the jack contact 50i, and the first insertion part 32a passes through the first contact cylinder and is inserted into the inner cavity of the second contact ring 548. The first insertion part 32a slidably abuts against a plurality of fourth elastic pieces 5484, causing the fourth elastic pieces 5484 to elastically deform, and the second contact ring 548 expands away from the center so that the third contact neck 5480 elastically contacts the first insertion part 32a. At the same time, the inner peripheral surface of the first contact part 52f slidably abuts against the elastic member 344, causing a plurality of elastic strips 3443 to gradually contract toward the center of the first insertion rod 3 until the elastic member 344 is inserted into the inner cavity of the first contact cylinder until the plurality of elastic strips 3443 elastically contact the inner peripheral surface of the first contact cylinder.

[0147] As Figures 56-62 shown, the structure of the connector terminal assembly 100g provided in the ninth embodiment of the present 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 jack contact 50j in the ninth embodiment is slightly different from the structure of the jack contact in the seventh embodiment. Specifically, the connector pin 30e in the ninth embodiment includes a first insertion part 32, a second insertion part 34a, and a first connection part 36. The second insertion part 34a is connected between the first insertion part 32 and the first connection part 36. The first insertion part 32, the second insertion part 34a, and the first connection part 36 are arranged along the axial direction of the connector pin 30e, and both the first insertion part 32 and the second insertion part 34a can elastically deform radially. The jack contact 50j includes a first contact part 52g, a second contact part 54f, and a second connection part 56d. The second contact part 54f is connected between the first contact part 52g and the second connection part 56d. The first contact part 52g is a first contact cylinder with an equal inner diameter, the second contact part 54f is a second contact cylinder with an equal inner diameter, and the second connection part 56d is a connection cylinder. The first contact cylinder, the second contact cylinder, and the connection 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 part 32, the inner diameter of the second contact cylinder is smaller than the outer diameter of the first insertion part 32, and the inner diameter of the first contact cylinder is smaller than the outer diameter of the second insertion part 34a. When the connector pin 30e and the jack contact 50j are inserted into each other, the outer peripheral surface of the first insertion part 32 elastically contacts the inner peripheral surface of the second contact cylinder, and the outer peripheral surface of the elastic member 344 elastically contacts the inner peripheral surface of the first contact cylinder to achieve a double-contact pair between the connector pin 30e and the jack contact 50j.

[0148] In this embodiment, elastic contact is formed between the first insertion part 32 and the second contact part 54f to form a contact pair, and elastic contact is formed between the second insertion part 34a and the first contact part 52g to form another contact pair. Therefore, the connector pin 30e and the jack contact 50j are mated in the form of a double contact pair. Compared with the prior art in which the pin and the contact component adopt a single contact pair form, the connector pin 30e and the jack contact 50j in this embodiment adopt a double contact pair form, which can reduce the contact resistance, improve the over-current capacity, have a lower temperature rise, and the connector terminal assembly 100g has fewer parts, a simple structure, is easier to assemble, and has a lower manufacturing cost.

[0149] Optionally, the first insertion part 32 includes a plurality of first elastic arms 320. The second insertion part 34a is a second insertion rod 343 and an elastic member 344 provided on the outer peripheral surface of the second insertion rod 343. The elastic member 344 can elastically deform in the radial direction of the second insertion rod 343. One ends of the plurality of first elastic arms 320 are respectively connected to one end of the second insertion rod 343. The plurality of first elastic arms 320 are circumferentially spaced apart around the second insertion rod 343 to form a circle. The outer diameter of the first insertion part 32 close to the second insertion rod 343 is smaller than the outer diameter of the first insertion part 32 far from the second insertion rod 343. A clearance groove 321 is formed between every two adjacent first elastic arms 320. The plurality of first elastic arms 320 together enclose a clearance hole 323. The clearance groove 321 communicates with the clearance hole 323. The clearance hole 323 and the second insertion rod 343 are coaxial. The thickness of the first elastic arm 320 gradually increases in the axial direction of the second insertion rod 343 from the second insertion rod 343 to the end far from the first connection part 36, so that the outer diameter of the first insertion part 32 at the end close to the second insertion rod 343 is smaller than the outer diameter at the end far from the second insertion rod 343.

[0150] Optionally, a positioning groove 3432 is provided on the outer peripheral surface of the second insertion rod 343. The positioning groove 3432 surrounds the second insertion rod 343 in a circumferential direction. The elastic member 344 is a lantern spring positioned in the positioning groove 3432. Specifically, the elastic member 344 includes two fixed rings 3442 spaced apart from each other and a plurality of elastic bars 3443 connected between the two fixed rings 3442. The plurality of elastic bars 3443 surround the fixed rings 3442 in a circumferential direction; the middle of each elastic bar 3443 bends outward in the radial direction of the second insertion rod 343. In this embodiment, the plurality of elastic bars 3443 are evenly spaced around the fixed rings 3442 in a circumferential direction. The outer diameter of the second insertion rod 343 is smaller than the outer diameter of the first connecting portion 36. A positioning platform 362 is formed between the first connecting portion 36 and the second insertion rod 343. The positioning platform 362 functions as a stop step; a first fixing protrusion 342 is provided at one end of the outer peripheral surface of the second insertion rod 343 close to the first connecting portion 36. The first fixing protrusion 342 surrounds the second insertion rod 343 in a circumferential direction; the positioning platform 362 and the first fixing protrusion 342 are used to produce a fixing force by means of an interference fit with the travel of the rubber core with which the connector pin 30d cooperates, and can prevent the connector pin 30e from rotating circumferentially or moving axially.

[0151] The second connecting portion 56d is a wire pressing cylinder, and the connection with the wire is achieved by crimping. The crimping can be, but is not limited to, spot crimping, pit crimping, or hexagonal crimping, etc. At least a pair of clamping grooves 562 are provided on the outer peripheral surface of the wire pressing cylinder to form a positioning portion 57 on the outer peripheral surface of the wire pressing cylinder; when the jack contact 50j is installed in the rubber core, both the positioning portion 57 and the clamping groove 562 are positioned with the rubber core.

[0152] When the connector pin 30e is inserted into the jack contact 50j, the first insertion portion 32 of the connector pin 30e is inserted into the first contact cylinder of the jack contact 50j, so that the first insertion portion 32 passes through the first contact cylinder and is inserted into the second contact cylinder. The guiding surface 324 of the first insertion portion 32 slidably abuts against the inner peripheral surface of the second contact cylinder, so that the plurality of first elastic arms 320 gradually contract toward the center of the avoidance hole 323 until the first insertion portion 32 is inserted into the second contact cylinder, and the first elastic arms 320 are elastically in contact with the inner peripheral surface of the second contact cylinder. At the same time, the inner peripheral surface of the first contact portion 52g slidably abuts against the elastic member 344, so that the plurality of elastic bars 3443 gradually contract toward the center of the second insertion rod 343 until the elastic member 344 is inserted into the inner cavity of the first contact cylinder until the plurality of elastic bars 3443 are elastically in contact with the inner peripheral surface of the first contact cylinder.

[0153] Please refer to Figures 63-69, the structure of the connector terminal assembly 100h provided in the tenth embodiment of the present application is similar to the structure 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 the structure of the connector pin in the first embodiment, and the structure of the jack contact 50h in the tenth embodiment is slightly different from the structure of the jack 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 connection portion 36. The second insertion portion 34b is connected between the first insertion portion 32a and the first connection portion 36. In this embodiment, the first insertion portion 32a is a first insertion rod with an equal diameter, the second insertion portion 34b is a second insertion rod with an equal diameter, the first connection portion 36 is a connection cylinder, and the first insertion rod, the second insertion rod, and the connection cylinder are coaxial. The diameter of the first insertion portion 32a is smaller than the diameter of the second insertion portion 34b, and the outer diameter of the first connection portion 36 is larger than the diameter of the second insertion portion 34b, so as to form a positioning table 362 between the first connection portion 36 and the second insertion portion 34b. A first fixing protrusion 342 is provided at one end of the outer peripheral surface of the second insertion rod close to the first connection portion 36, and the first fixing protrusion 342 surrounds the circumference of the second insertion portion 34b. The positioning table 362 and the first fixing protrusion 342 are used to generate a fixing force due to an interference fit between the connector pin 30f and the rubber core it cooperates with, and can prevent the connector pin 30f from rotating circumferentially or moving axially.

[0154] Optionally, the jack contact 50h includes a first contact portion 52h, a second contact portion 54g, and a second connection portion 56d. The second contact portion 54g is connected between the first contact portion 52h and the second connection portion 56d. The second contact portion 54g is a second contact cylinder, and the second connection portion 56d is a connection cylinder. The second contact cylinder and the connection cylinder are coaxial. Specifically, the first contact portion 52h includes a plurality of first elastic pieces 520b. 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. The middle part of the second contact ring 548 is recessed into its inner cavity to form a third contact neck 5480. One ends of the plurality of first elastic pieces 520b are respectively connected to one end of the second contact cylinder 7. The plurality of first elastic pieces 520b are arranged in a circle at intervals along the circumferential direction of the second contact cylinder 7. There is a relief groove 521 between every two adjacent first elastic pieces 520b. The end of the first elastic piece 520b away from the second contact cylinder 7 inclines towards the axis line of the second contact cylinder 7. The inner diameter formed by the ends of the plurality of first elastic pieces 520b away from the second contact portion 54g is smaller than the inner diameter formed by the ends of the plurality of first elastic pieces 520b close to the second contact portion 54g. In this embodiment, the plurality of first elastic pieces 520b are arranged in a circle at evenly spaced intervals along the circumferential direction of the second contact cylinder 7, and each first elastic piece 520b is an arc-shaped piece. The ends of the plurality of first elastic pieces 520b away from the second contact cylinder 7 form a first throat diameter hole 526c. The inner diameter of the first throat diameter hole 526c is larger than the outer diameter of the first insertion portion 32a and smaller than the outer diameter of the second insertion portion 34b. In other embodiments, the second contact ring 548 can also adopt a crown spring.

[0155] Optionally, the second contact ring 548 includes two second connection rings 5482 spaced apart from each other along its axial direction and a plurality of fourth elastic pieces 5484. The two second connection rings 5482 are coaxial. The opposite ends of the plurality of fourth elastic pieces 5484 are respectively connected to the two second connection rings 5482. The plurality of fourth elastic pieces 5484 are arranged in a circle at intervals along the circumferential direction of the second connection rings 5482. The middle part of each fourth elastic piece 5484 bends towards the axis of the second connection rings 5482. The middle parts of the plurality of fourth elastic pieces 5484 form a third contact neck 5480. In this embodiment, the plurality of fourth elastic pieces 5484 are arranged in a circle at evenly spaced intervals along the circumferential direction of the second connection rings 5482. A positioning groove is provided on the inner circumferential surface of the second contact cylinder 7. The positioning groove surrounds the second contact cylinder 7 in a circumferential direction. The outer diameter of the second connection 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, the plurality of fourth elastic pieces 5484 are arranged in a spiral circle around the circumferential direction of the second connection rings 5482, so that the throat diameter of the second contact ring 548 is smaller than the inner diameter of the second connection rings 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 herein again.

[0157] When the connector pin 30f is inserted into the jack contact 50h, the first insertion portion 32a of the connector pin 30f is inserted into the first throat diameter hole 526c of the jack contact 50h, so that the first insertion portion 32a passes through the first throat diameter 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 slidably abuts against a plurality of fourth elastic pieces 5484, causing the fourth elastic pieces 5484 to elastically deform outward until the first insertion portion 32a is elastically in contact with the plurality of fourth elastic pieces 5484. At the same time, the outer peripheral surface of the second insertion portion 34b slidably abuts against a plurality of first elastic pieces 520b, causing the plurality of first elastic pieces 520b to gradually elastically deform in a direction away from the axis of the first insertion portion 32a until the first elastic pieces 520b are all elastically in contact with the outer peripheral surface of the first insertion portion 32a.

[0158] Please refer to Figures 70-71 , the structure of the connector terminal assembly 100i provided in the eleventh embodiment of the present application is similar to the structure 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 the structure of the connector pin in the tenth embodiment, and the structure of the jack contact 50i in the eleventh embodiment is slightly different from the structure of the jack 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 connection portion 36. The second insertion portion 34c is connected between the first insertion portion 32b and the first connection 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, the first connection portion 36 is a connection cylinder, the opposite ends of the second insertion rod are respectively connected to the first insertion rod and the connection cylinder, and the first insertion rod, the second insertion rod and the connection cylinder are coaxial. The outer diameter of the first insertion portion 32b is equal to the outer diameter of the second insertion portion 34c, and the outer diameter of the first connection portion 36 is greater than the outer diameter of the second insertion portion 34c to form a positioning table 362 between the first connection portion 36 and the second insertion portion 34c. A first fixing protrusion 342 is provided at one end of the outer peripheral surface of the second insertion portion 34c close to the first connection portion 36, and the first fixing protrusion 342 surrounds the circumference of the second insertion portion 34c. The positioning table 362 and the first fixing protrusion 342 are used to generate a fixing force due to an interference fit with the glue core with which the connector pin 30g cooperates, and 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. 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 abutting member 549. The second contact cylinder 7 is sleeved on the abutting member 549. One end of the first contact cylinder 528 is connected to one end of the second contact cylinder 7. 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. 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 abutting member 549 is a conductive compression spring, and the elastic deformation range of the abutting member 549 along the axial direction of the second contact cylinder 7 is greater than 2.0 mm. When the connector pin 30g and the jack contact 50i are inserted into each other, the first insertion portion 32b elastically abuts against the end face of the abutting member 549, and the insertion rod c elastically contacts the inner peripheral surface of the first contact ring 529, so as to realize the double-contact pair between the connector pin 30g and the jack contact 50i.

[0160] When the connector pin 30g and the jack contact 50i in this embodiment are inserted into each other, the first insertion portion 32b and the abutting member 549 elastically contact to form a contact pair, and the second insertion portion 34c and the first contact ring 529 elastically contact to form another contact pair. Therefore, the connector pin 30g and the jack contact 50i adopt a double-contact pair to form a fit. Compared with the prior art in which the pin and the contact assembly adopt a single-contact pair form, the connector pin 30g and the jack contact 50i in this application adopt a double-contact pair form, which can reduce the contact resistance, improve the over-current capacity, have a lower temperature rise, and the connector terminal assembly 100i has fewer parts, a simple structure, and a lower manufacturing cost.

[0161] As Figures 71-73 shown, a positioning cylinder 5284 is provided at one end of the first contact cylinder 528 departing from the second contact cylinder 7. The positioning cylinder 5284 is coaxial with the first contact cylinder 528. When assembling the jack contact 50i, the abutting member 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 abutting member 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 towards 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 refer to Figure 74, the structure of the connector terminal assembly provided in the twelfth embodiment of the present 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 in detail here; the structure of the jack contact 50j in the twelfth embodiment is slightly different from that of the jack contact in the eleventh embodiment; specifically, the abutting member 549a of the second contact portion 54h in the twelfth embodiment uses a conductive hair button contact, and the hair button contact is accommodated in the inner cavity of the second contact cylinder 7; the hair button contact uses a highly elastic metal wire, such as beryllium bronze wire, and is randomly wound into a cylindrical shape through a special process. The principle of the hair button contact is the same as that of the ordinary spring contact, which is elastic contact. Reliable contact between the hair button contact and other components is achieved by axial elastic compression. When the end face of the first insertion portion abuts against the hair button contact and is subjected to external force extrusion, the hair button contact can produce elastic deformation, so as to maintain good electrical connection.

[0163] When the connector pin and the jack contact 50j are inserted into each other, elastic contact is formed between the first insertion portion and the hair button to form a contact pair, and elastic contact is formed between the second insertion portion and the first contact ring 529 to form another contact pair; therefore, the connector pin and the jack contact 50j adopt a double-contact pair to form a fit. Compared with the single-contact pair form of the pin and the contact assembly in the prior art, the connector pin and the jack contact 50j of the present application adopt a double-contact pair form, which can reduce the contact resistance, improve the over-current capacity, have a lower temperature rise, and the connector terminal assembly has fewer parts, a simple structure, and a lower manufacturing cost.

[0164] Please refer to Figures 75-76 , the structure of the connector terminal assembly provided in the thirteenth embodiment of the present application is similar to that of the connector terminal assembly provided in the eleventh embodiment. The difference is that: the abutting member 549b of the second contact portion in the thirteenth embodiment uses a conductive finger spring, and the finger spring is accommodated 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 subjected to external force extrusion, the finger spring can produce elastic deformation, so as to maintain good electrical connection.

[0165] The finger spring is made by bending a contact wire with high electrical conductivity through the elastic force of the spring. The contact wire can be, but is not limited to, beryllium bronze wire, phosphor bronze wire, etc. The contact wire has good electrical conductivity and elasticity. The finger spring can provide a low-resistance electrical connection when the first insertion part makes contact, and when an external force is applied, the finger spring undergoes elastic deformation to ensure close fitting with the contact object, so that the contact part corresponding to the finger spring and the first insertion part remains in close contact. When an external force acts on the finger spring, the finger spring will undergo compressive deformation, thereby driving the movement of the contact wire to adapt to different contact distances and pressure requirements. In an electrical connection, a low-resistance conductive channel is formed between the finger spring and the contact object to achieve current transmission. At the same time, the elastic effect of the finger spring can also compensate for the unevenness and tolerances of the contact surface to a certain extent to ensure reliable electrical contact.

[0166] The finger spring is wound from a single spring wire using a spring machine or other methods. Specifically, the finger spring uses a spring wire with high electrical conductivity and high elasticity. It can be processed by twisting and bending a single spring wire with a spring machine, and then its head and tail are welded or bonded together. The abutting member 549b in this embodiment has a conical outer contour. The abutting member 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 abutting member 549b, and the second connecting rod 5494 is located on the inside of the abutting member 549b. The first included angle a of the relative rotation of the top ring 5491 with respect to the bottom ring 5492. Optionally, the value range of the first included angle a is between 30° and 50°, that is, the first included angle a can be, but is not limited to, 30°, 32°, 34°, 35°, 36°, 38°, 40°, 41°, 44°, 45°, 47°, 48°, 49°, 50°, etc. Looking at the side, the first connecting rod 5493 of the abutting member 549b and the adjacent single second connecting rod 5494 are both inclined along the same side with respect to the plane where the bottom ring 5492 is located. 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 where the bottom ring 5492 is located. Optionally, the value range of the second included angle b is between 0°

[0167] ~90°, that is, 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°, 90°, etc. The force F applied to the top ring 5491 of the abutting member 549b causes the top ring 5491 of the abutting member 549b to move in the direction close to the bottom ring 5492. At the same time, the aforementioned second included angle b also becomes smaller and smaller until the spring force of the abutting member 549b in the vertical direction is balanced with the applied force F. When the force F is removed, the abutting member 549b automatically resets under its own spring force and returns to the initial state.

[0168] Please refer to 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. The difference is that: the abutting member 549c of the second contact portion in the fourteenth embodiment uses a conductive finger spring, and the finger spring is accommodated in the inner cavity of the second contact cylinder; when the end face of the first plugging portion abuts against the finger spring and is extruded by an external force, the finger spring can generate elastic deformation, so as to maintain good electrical connection.

[0169] In this embodiment, the abutting member 549c has a cylindrical outer contour. The abutting 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 abutting member 549b, and the second connecting rod 5494 is located inside the abutting member 549b. The radial width of the top ring 5491 is substantially the same as the radial width of the bottom ring 5492. The top ring 5491 can increase the contact area with the end face of the first plugging portion, and the bottom ring 5492 can increase the contact area with the power contact disk to increase the contact reliability.

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

[0171] Please refer to 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. The difference is that: the abutting member 549d of the second contact portion in the fifteenth embodiment uses a conductive corrugated spring, and the corrugated spring is accommodated in the inner cavity of the second contact cylinder; when the end face of the first plugging portion abuts against the corrugated spring and is extruded by an external force, the corrugated spring can generate elastic deformation, so as to maintain good electrical connection.

[0172] In this embodiment, the wave peaks of the corrugated spring are opposite to each other, and the wave valleys are opposite to each other. The top end face 5495 and the bottom end face 5496 are both horizontal end faces for winding the wave spring. For a wave spring with n turns in the natural state, except for the top and bottom ends, each single turn is in a sine wave shape, and the wave peaks and wave valleys are opposite to each other between layers. The corrugated spring is helically wound by a wavy flat wire with the wave peaks opposite to each other, and has excellent elasticity and toughness. The top end face 5495 and the bottom end face 5496 of the corrugated spring are both flat ends, which is equivalent to adding two washers at the opposite ends of the corrugated spring, making the elastic force of the spring more uniform during use. Structurally, this corrugated spring maintains the consistency of wave peaks facing wave peaks and wave valleys facing wave valleys, and belongs to the wave peak staggered type corrugated spring with flat coils. Due to the wave peaks facing each other, there are multiple wave peak contact points between each layer and the adjacent layer, greatly increasing the contact area, thereby improving the current-carrying capacity of the corrugated spring. Moreover, this structure is simple, convenient for production and processing, and has a low cost.

[0173] The winding process of this corrugated spring: Fix one end of the prepared flat spring wire on the mandrel of the winding equipment, and the mandrel starts to rotate. At the same time, the feeding mechanism of the equipment sends out the flat spring wire along the axial direction of the mandrel at a constant speed; during the sending process, the flat spring wire passes through a specially designed guiding die, which guides the spring wire to bend according to a predetermined corrugated shape to form a wavy shape. With the continuous rotation of the mandrel, the wavy flat spring wire is gradually wound around the mandrel to form a multi-layer spiral structure. During the winding process of the corrugated spring, the number of turns wound, the outer diameter and inner diameter dimensions 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, the rotation speed of the mandrel, and the tension are finely adjusted to ensure the accuracy and stability of the winding process. For example, if it is found that there is a deviation in the outer diameter dimension, the feeding speed or the tension can be appropriately adjusted to make the spring wire tighter or looser during winding, so as to correct the outer diameter dimension. When approaching the target number of turns during winding, slow down the winding speed to ensure the winding accuracy of the last few turns. When the predetermined number of turns is reached, stop the winding equipment and fix the end of the spring wire on the mandrel to prevent it from loosening.

[0174] Each wave peak of the corrugated spring contacts the corresponding wave valley of the next layer. When there are N wave peaks and wave valleys in one turn, there will be N contact points between each layer and the adjacent layer. Due to the multiple contact points, the current-carrying area is increased and the contact resistance is reduced, improving the current-carrying capacity.

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

[0176] See also Figure 82 As shown, the structure of the connector terminal assembly provided in the sixteenth embodiment of the present 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 sixteenth embodiment adopts a conductive coil spring, which is accommodated in the inner cavity of the second contact cylinder; when the end surface of the first plug portion abuts against the coil spring and is squeezed by an external force, the coil spring can produce elastic deformation, thereby maintaining a good electrical connection. The coil spring can be, but is not limited to, a rectangular coil spring, a circular coil spring, etc.; in this embodiment, the coil spring is a rectangular coil spring.

[0177] Specifically, the rectangular helical spring is rectangular in shape and is made of a metal wire with a rectangular cross section wound into a spiral shape. This special shape allows the spring to provide a greater load-bearing capacity and deformation in the same space. Compared with a helical spring made of a metal wire with a circular cross section, the structure of a rectangular helical spring is more compact. Usually, a dense winding method is adopted, and adjacent spring coils are closely arranged to ensure that the spring can evenly transmit force and deform when subjected to force. Depending on the specific use requirements, the direction of rotation of the rectangular helical spring can be left-handed or right-handed.

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

[0179] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea.

Claims

1. A connector pin, characterized in that, The connector pin includes: A first plugging portion; and A second plugging portion, the second plugging portion being connected to one end of the first plugging portion, the first plugging portion and the second plugging portion being arranged along the axial direction of the connector pin, and the first plugging portion being capable of radially elastic deformation and / or the second plugging portion being capable of radially elastic deformation.

2. The connector pin according to claim 1, characterized in that, The first plugging portion includes a plurality of first elastic arms, the second plugging portion is a plugging rod, one ends of the plurality of first elastic arms are respectively connected to one end of the plugging rod, the plurality of first elastic arms are circumferentially spaced apart from each other around the plugging rod to enclose a circle, and the outer diameter of the first plugging portion close to the plugging rod is smaller than the outer diameter of the first plugging portion far from the plugging rod.

3. The connector pin according to claim 2, characterized in that, The plurality of first elastic arms enclose an avoidance hole, and a counterbore is provided on the end face of the plugging rod close to the first plugging portion, and the avoidance hole communicates with the counterbore.

4. The connector pin according to claim 2, wherein, A first fixing protrusion is provided on the outer peripheral surface of the plugging rod far from the first plugging portion, and the first fixing protrusion encloses a circle around the circumferential direction of the plugging rod.

5. The connector pin according to claim 1, wherein The first plugging portion is a first plugging rod, the second plugging portion includes a second plugging rod and an elastic member provided on the outer peripheral surface of the second plugging rod, and the elastic member can be elastically deformed radially along the second plugging rod.

6. The connector pin according to claim 5, characterized in that, A positioning groove is provided on the outer peripheral surface of the second plugging rod, the positioning groove encloses a circle around the circumferential direction of the second plugging rod, and the elastic member is a lantern spring positioned in the positioning groove.

7. The connector pin according to claim 1, wherein The first plugging portion includes a plurality of first elastic arms, the second plugging portion includes a second plugging rod and an elastic member provided on the outer peripheral surface of the second plugging rod, and the elastic member can be elastically deformed radially along the second plugging rod; one ends of the plurality of first elastic arms are respectively connected to one end of the second plugging rod, the plurality of first elastic arms are circumferentially spaced apart from each other around the second plugging rod to enclose a circle, and the outer diameter of the first plugging portion close to the second plugging rod is smaller than the outer diameter of the first plugging portion far from the second plugging rod.

8. The connector pin according to claim 1, wherein The first plugging portion is a first plugging rod, the second plugging portion is a second plugging rod, the first plugging rod and the second plugging rod are coaxial, and the outer diameter of the first plugging portion is smaller than the outer diameter of the second plugging portion and the elastic member.

9. A jack contact for mating with a connector pin, characterized in that, The jack contact includes: A first contact portion; and A second contact portion, the second contact portion being connected to one end of the first contact portion, and the jack of the jack contact penetrates through the first contact portion and the second contact portion; the connector pin is plugged into the jack, and there is elastic contact between the connector pin and the second contact portion, and there is elastic contact between the connector pin and the first contact portion.

10. The jack contact according to claim 9, wherein The connector pin is the connector pin according to any one of claims 1-8, the first contact portion and the second contact portion are arranged along the axial direction of the jack, and the first contact portion is capable of radially elastic deformation and / or the second contact portion is capable of radially elastic deformation.

11. The jack contact according to claim 10, wherein The first contact part includes a plurality of first elastic pieces. The second contact part is a contact cylinder. One ends of the plurality of first elastic pieces are respectively connected to one end of the contact cylinder. The plurality of first elastic pieces are arranged in a circle at intervals along the circumferential direction of the contact cylinder. One end of the first elastic piece away from the contact cylinder inclines towards the axis line of the contact cylinder.

12. The jack contact according to claim 11, wherein, The first elastic piece includes a connecting strip and a guiding strip. One end of the guiding strip is connected to one end of the connecting strip. The end of the connecting strip away from the guiding strip is connected to the contact cylinder. One end of the connecting strip close to the guiding strip inclines towards the axis line of the contact cylinder. The guiding strip extends obliquely away from the axis line from the connecting strip. Junctions of the plurality of connecting strips and the plurality of guiding strips enclose a first throat diameter hole.

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

14. The jack contact according to claim 11, wherein, The first contact part further includes a guiding ring. The guiding ring is connected to one ends of the plurality of first elastic pieces facing away from the contact cylinder. The guiding ring and the contact cylinder share the same axis line. One end of the guiding ring close to the first elastic piece forms a second throat diameter hole. One end of the guiding ring away from the first elastic piece forms a guiding hole. The inner diameter of the second throat diameter hole is smaller than the inner diameter of the guiding hole.

15. The jack contact according to claim 10, wherein The first contact part includes a first contact cylinder and an elastic first contact ring. The first contact cylinder is sleeved on the first contact ring. The middle part of the first contact ring indents towards its inner cavity to form a first contact neck. The second contact part is a second contact cylinder. The second contact cylinder and the first contact cylinder share the same axis line. The throat diameter of the contact neck is larger than the inner diameter of the second contact cylinder.

16. The jack contact according to claim 10, characterized in that, The first contact part includes a plurality of second elastic pieces. The second contact part is a contact cylinder. One ends of the plurality of second elastic pieces are respectively connected to one end of the contact cylinder. The plurality of second elastic pieces are arranged in a circle at intervals along the circumferential direction of the contact cylinder. The inner diameter of the first contact part is larger than the inner diameter of the contact cylinder.

17. The jack contact according to claim 10, characterized in that, The first contact part is a first contact cylinder. The second contact part 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 share the same axis line. The middle part of the second contact ring indents towards 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 jack contact according to claim 10, wherein The first contact part is a first contact cylinder. The second contact part includes a second contact cylinder and an elastic second contact ring. The second contact cylinder is sleeved on the second contact ring. The middle part of the second contact ring indents towards its inner cavity to form a third contact neck. The first contact cylinder and the second contact cylinder share the same axis line. The inner diameter of the first contact cylinder is larger than the throat diameter of the third contact neck.

19. The jack contact according to claim 10, characterized in that, The first contact portion includes a plurality of first elastic pieces. 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. The middle part of the second contact ring is recessed into its inner cavity to form a third contact neck. One ends of the plurality of first elastic pieces are respectively connected to one end of the second contact cylinder. The plurality of first elastic pieces are arranged in a circle at intervals along the circumferential direction of the second contact cylinder. The end of the first elastic piece far from the second contact cylinder inclines towards the axis line of the second contact cylinder.

20. The jack 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. 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 abutting member. The second contact cylinder is sleeved on the abutting member. 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 the connector pin as described in any one of claims 1-8, and the jack contact as described in any one of claims 11-20. The connector pin and the jack contact can be inserted into each other.

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