Connector terminal, manufacturing method of connector terminal and connector

Abstract

The invention discloses a connector terminal, a manufacturing method of the connector terminal and a connector, the connector terminal comprises a connecting part and a contact part, the contact part comprises a first connecting ring, a first contact ring and a second contact ring, one end of the first contact ring is connected to the connecting part, the other end of the first contact ring is connected to one end of the first connecting ring, and the other end of the second contact ring is connected to the other end of the second connecting ring. The second contact ring is connected to the other end of the first connecting ring, and the first contact ring, the first connecting ring and the second contact ring are coaxial. And the connecting part and the contact part are of an integrated structure.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connection, and particularly relates to a connector terminal, a manufacturing method of the connector terminal, and a connector provided with the connector terminal. Background Art

[0002] Connectors are widely used in various types of vehicles, communications, computers and other consumer electronics, industrial, transportation and other fields. As a key component among them, the terminals of the connector are mainly used to transmit current or signals. The existing terminals generally include a housing and a plurality of wiring terminals, and the plurality of wiring terminals are respectively connected to the housing. However, the existing multi-contact pair terminals are assembled from multiple components, with a large number of parts and a complex structure. Summary of the Invention

[0003] The purpose of the present application is to provide a connector terminal, a manufacturing method of the connector terminal, and a connector provided with the connector terminal, which have a simple structure and a relatively low manufacturing cost.

[0004] The present application provides a connector terminal, which includes a connection part and a contact part. The contact part includes a first connection ring, a first contact ring and a second contact ring. One end of the first contact ring is connected to the connection part, the other end of the first contact ring is connected to one end of the first connection ring, the second contact ring is connected to the other end of the first connection ring, and the first contact ring, the first connection ring and the second contact ring are coaxial. The connection part and the contact part are of an integral structure.

[0005] The present application also provides a manufacturing method of a connector terminal, including the following steps: stamping a row of spaced first through slots and a row of spaced second through slots on a metal sheet, the row of first through slots being spaced from the row of second through slots, and the row of first through slots being closer to the middle of the metal sheet than the row of second through slots. The metal sheet is subjected to a curling process so that the row of first through slots encloses a circle to form a first contact ring, the row of second through slots encloses a circle to form a second contact ring, and the metal sheet forms a first connection ring in a circle between the row of first through slots and the row of second through slots.

[0006] The present application also provides a connector, which includes a plastic core, and the connector terminal is installed in the plastic core.

[0007] In the present application, the connector terminal is of an integral structure, with a simple structure and a low manufacturing cost. Secondly, the first contact ring and the second contact ring are respectively more easily deformed to form a better contact with the terminal to be mated, so as to achieve the transmission of a larger current. Therefore, the connector terminal not only has a simple structure and a low manufacturing cost, but also can meet the requirement of large current transmission. Description of the Drawings

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

[0009] Figure 1 It is a schematic perspective view of the connector terminal provided by the first embodiment of the present application.

[0010] Figure 2 It is Figure 1 a schematic perspective view of one implementation manner of the connector terminal in

[0011] Figure 3 It is Figure 1 a schematic perspective view of another implementation manner of the connector terminal in

[0012] Figure 4 It is a schematic perspective view of the connector terminal provided by the second embodiment of the present application.

[0013] Figure 5 It is a schematic perspective view of the connector terminal provided by the third embodiment of the present application.

[0014] Figure 6 It is a schematic perspective view of the connector terminal provided by the fourth embodiment of the present application.

[0015] Figure 7 It is a schematic perspective view of the connector terminal provided by the fifth embodiment of the present application.

[0016] Figure 8 It is a schematic perspective view of the connector terminal provided by the sixth embodiment of the present application.

[0017] Figure 9 It is a schematic perspective view of the connector terminal provided by the seventh embodiment of the present application.

[0018] Figure 10 It is Figure 9 a schematic assembly structure view of the connector terminal and the mating terminal in

[0019] Figure 11 It is Figure 10 a cross-sectional view of the connector terminal and the mating terminal in

[0020] Figure 12 It is a schematic perspective view of the connector terminal provided by the eighth embodiment of the present application.

[0021] Figure 13 It is Figure 12 a cross-sectional view of the connector terminal in

[0022] Figure 14 It is Figure 1 a flattened state view of the connector terminal in

[0023] Figure 15 It is Figure 6Flattened state diagram of the connector terminal in

[0024] Figure 16 is Figure 8 Flattened state diagram of the connector terminal in

[0025] Figure 17 is Figure 12 Flattened state diagram of the connector terminal in Detailed implementation mode

[0026] 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.

[0027] It should be noted that the mention of "embodiment" or "implementation mode" in this article means that the specific features, structures or characteristics described in connection with the embodiment or implementation mode 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.

[0028] The terms "first" and "second" appearing in the present application are only for the purpose of description, and cannot be understood 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 specified and limited, the terms "installed", "connected", "connected", "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.

[0029] Please refer to Figure 1, the connector provided by the first embodiment of the present application includes a connector terminal 100 and a plastic core. The connector terminal 100 is installed in the installation hole of the plastic core. The connector is plugged into the mating connector, and the connector terminal 100 of the connector is plugged into the mating terminal of the mating connector to achieve electrical connection. Among them, one of the connector and the mating connector is a male seat, and the other is a female seat.

[0030] The connector terminal 100 includes a connection portion 10 and a contact portion 20 fixedly connected along the X-axis direction. The connection portion 10 and the contact portion 20 are an integral structure. The contact portion 20 includes a first contact ring 21, a first connection ring 22, a second contact ring 23, and a second connection ring 24. One end of the first contact ring 21 along the X-axis direction is fixedly connected to one end of the connection portion 10 along the X-axis direction, and the other end of the first contact ring 21 along the X-axis direction is fixedly connected to one end of the first connection ring 22 along the X-axis direction. One end of the second contact ring 23 along the X-axis direction is fixedly connected to the other end of the first connection ring 22 along the X-axis direction, and the end of the second contact ring 23 away from the first connection ring 22 is fixedly connected to one end of the second connection ring 24 along the X-axis direction. The X-axis direction is parallel to the axis of the first connection ring.

[0031] The connection portion 10, the first contact ring 21, the first connection ring 22, the second contact ring 23, and the second connection ring 24 are coaxial. The connection portion 10, the first contact ring 21, the first connection ring 22, and the second contact ring 23 are an integrally formed structure. The inner cavities of the second connection ring 24, the second contact ring 23, the first connection ring 22, and the first contact ring 21 communicate with each other to form a plugging hole 25.

[0032] The first contact ring 21 includes a plurality of first elastic pieces 211, one end of each of the first elastic pieces 211 along the X-axis direction is fixedly connected to one end of the first connecting ring 22 along the X-axis direction, and one end of each of the first elastic pieces 211 away from the first connecting ring 22 is fixedly connected to one end of the connecting portion 10 along the X-axis direction, and the plurality of first elastic pieces 211 are arranged in a circle at intervals in the circumferential direction of the first connecting ring 22; the second contact ring 23 includes a plurality of second elastic pieces 231, one end of each of the second elastic pieces 231 along the X-axis direction is fixedly connected to one end of the first connecting ring 22 away from the first elastic piece 211, and one end of each of the second elastic pieces 231 away from the first connecting ring 22 is fixedly connected to one end of the second connecting ring 24 along the X-axis direction; the plurality of second elastic pieces 231 are arranged in a circle at intervals in the circumferential direction of the first connecting ring 22. In this embodiment, multiple first spring clips 211 are evenly spaced and arranged around the circumference of the first connecting ring 22. The spacing between two adjacent first spring clips 211 ranges from 0.6t to 2t, where t is the thickness of the first spring clip 211. The smaller the spacing between two adjacent first spring clips 211, the better the current-carrying capacity of the connector terminal 100. Multiple second spring clips 231 are evenly spaced and arranged around the circumference of the first connecting ring 22. The spacing between two adjacent second spring clips 231 ranges from 0.6X to 2X, where X is the thickness of the second spring clip 231. The smaller the spacing between two adjacent second spring clips 231, the better the current-carrying capacity of the connector terminal 100.

[0033] The connector terminal 100 can be manufactured through a rolling process. The rolling seam of the connector terminal 100 is less than 0.2 mm. The smaller the seam, the larger the cross-sectional area of the connector terminal 100, thereby improving the current carrying capacity and reducing the risk of the connector terminal 100 being deformed by force.

[0034] The connector of this embodiment can be widely used in various fields such as automobiles, communications, computers, consumer electronics, industry, and transportation. For example, it can be used as a key component in batteries for new energy vehicles, electric bicycles, electric motorcycles, electric scooters, and power tools. Its applications are very broad and not limited to these examples.

[0035] In this embodiment, the connector terminal 100 is an integrated structure, requiring fewer manufacturing steps, resulting in a simple structure and low manufacturing cost. Furthermore, the first contact ring 21 and the second contact ring 23 are each more easily deformed, forming a better contact with the mating terminal, thereby enabling the transmission of higher currents. Therefore, the connector terminal 100 is not only simple in structure and low in manufacturing cost, but also capable of transmitting high currents.

[0036] Among them, a plurality of first elastic pieces 211 are arranged in a circle at equal intervals along the circumferential direction of the first connecting ring 22, and a plurality of second elastic pieces 231 are arranged in a circle at equal intervals along the circumferential direction of the first connecting ring 22. When the connector terminal 100 is inserted into the terminal to be mated, the force is more evenly distributed, which helps to avoid wear caused by uneven force. In other embodiments, a plurality of first elastic pieces 211 may also be arranged in a circle at unequal intervals along the circumferential direction of the first connecting ring 22. A plurality of second elastic pieces 231 may also be arranged in a circle at unequal intervals along the circumferential direction of the first connecting ring 22.

[0037] In this embodiment, the connecting portion 10 is used to realize the electrical connection between the connector terminal 100 and the wire. The connecting portion 10 includes a body 11, a cover plate 12 and a connecting member 13. The body 11 is cylindrical. One end of the body 11 in the X-axis direction is fixedly connected to a plurality of first elastic pieces 211, and the inner cavity of the body 11 communicates with the insertion hole 25. In this embodiment, the body 11 and the contact portion 20 are coaxial. Optionally, a positioning boss 111 is provided on the outer peripheral surface of the body 11, and the positioning boss 111 surrounds the body 11 in a circumferential direction. When the connector terminal 100 is installed in the plastic core, the positioning boss 111 positions the plastic core. The cover plate 12 is arranged at one end of the inner peripheral surface of the body 11 away from the first elastic piece 211, and the outer peripheral surface of the cover plate 12 fits with the inner peripheral surface of the body 11 to close the inner cavity of the body 11, so that the connector terminal 100 will not leak glue into the contact portion 20 during dispensing or encapsulation.

[0038] One end of the connecting member 13 in the X-axis direction is fixedly connected to the end of the body 11 facing away from the first elastic piece 211. In this embodiment, the connecting member 13 is in the shape of an arc-shaped sheet, the connecting member 13 and the body 11 are coaxial, and the outer peripheral surface of the connecting member 13 is flush with the outer peripheral surface of the body 11. Optionally, a plurality of protrusions 131 are provided on the inner peripheral surface of the connecting member 13, and each protrusion 131 extends along the circumferential direction of the connecting member 13, and the plurality of protrusions 131 are arranged at intervals in the X-axis direction. When the connecting member 13 is welded and fixed to the wire, the protrusions 131 on the connecting member 13 can increase the connection force between the connecting member 13 and the wire during welding. In other embodiments, a plurality of grooves may also be provided on the inner peripheral surface of the connecting member 13, each groove extends along the circumferential direction of the connecting member 13, and the plurality of grooves are arranged at intervals in the X-axis direction.

[0039] As Figure 2 shown, in another embodiment, the connecting member 13 of the connector terminal 100 is provided as a crimping foot 132, and the wire is fixedly connected to the crimping foot 132 through a crimping process, so that the wire is fixedly connected to the connecting portion 10. In other embodiments, the connecting portion 10 may be provided as a crimping cylinder, and the wire is fixedly connected to the crimping cylinder through a crimping process.

[0040] As Figure 3As shown, in another embodiment, the connecting member 13 is a flat plate 133 connected to the body 11. The wire is placed on the flat plate 133, and the wire is fixedly connected to the connecting portion 10 through processes such as ultrasonic welding.

[0041] Continuing to refer to Figure 1 , in this embodiment, a plurality of first elastic pieces 211 are spirally arranged in a circle around the circumference of the first connecting ring 22, so that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connecting ring 22; the throat diameter of the first contact ring 21 refers to the minimum inner diameter of the first contact ring 21. The minimum inner diameter of the first contact ring 21 can be the inner diameter in the middle of the first contact ring 21, or the inner diameter closer to or farther from the middle of the first contact ring 21.

[0042] A plurality of second elastic pieces 231 are spirally arranged in a circle around the circumference of the first connecting ring 22, so that the throat diameter of the second contact ring 23 is smaller than the inner diameter of the first connecting ring 22 and the inner diameter of the second connecting ring 24. The throat diameter of the second contact ring 23 refers to the minimum inner diameter of the second contact ring 23. The minimum inner diameter of the second contact ring 23 can be the inner diameter in the middle of the second contact ring 23, or the inner diameter closer to or farther from the middle of the second contact ring 23. It can be understood that the first contact ring 21 and the second contact ring 23 are torsion springs.

[0043] Optionally, a plurality of positioning holes 221 are provided on the outer peripheral surface of the first connecting ring 22. The shape of the positioning holes 221 is a circular hole. In other embodiments, the shape of the positioning holes 221 can also be a rectangular hole, and the positioning effect of the rectangular hole is better. Each positioning hole 221 communicates with the inner cavity of the first connecting ring 22, and a plurality of positioning holes 221 are arranged at intervals around the circumference of the first connecting ring 22. In other embodiments, the positioning holes 221 may not communicate with the inner cavity of the first connecting ring 22. A plurality of positioning grooves 241 are provided on the end surface of the second connecting ring 24 facing away from the second elastic pieces 231. The positioning grooves 241 penetrate through the inner peripheral surface and the outer peripheral surface of the second connecting ring 24. A plurality of positioning grooves 241 are arranged at intervals around the circumference of the second connecting ring 24.

[0044] When processing the connector terminal 100 of this embodiment, first fix the connecting portion 10, and then use a twisting tool (servo motor or mechanical transmission mechanism) to clamp the second connecting ring 24, that is, the twisting tool is positioned in the positioning groove 241, and then the twisting tool drives the second connecting ring 24 to rotate. The second connecting ring 24 then drives the second contact ring 23, the first connecting ring 22 and the first contact ring 21 to rotate, so that the first contact ring 21 and the second contact ring 23 present a spiral structure.

[0045] If a good twisting effect cannot be obtained in the first twist, a second twist can be performed. During the second twist, two twisting tools are used to grip the first connecting ring 22 and the second connecting ring 24 respectively for twisting. When the twisting tool grips the first connecting ring 22, the clamp of the twisting tool is positioned in the positioning hole 221 of the first connecting ring 22. When the twisting tool grips the second connecting ring 24, the clamp of the twisting tool is positioned in the positioning groove 241 of the second connecting ring 24, so as to improve the clamping force between the twisting tool and the first connecting ring 22 and the clamping force between the twisting tool and the second connecting ring 24. In other embodiments, the positioning hole 221 and the positioning groove 241 can be omitted.

[0046] By controlling the twisting angle of the twisting tool, different throat diameters can be obtained. The range of the twisting angle is between 10° and 80°. The twisting angle of the terminal with a larger diameter is set relatively small, and the twisting angle of the terminal with a smaller diameter is set relatively large.

[0047] The throat diameters of the first contact ring 21 and the second contact ring 23 determine the magnitude of the clamping force when they contact the mating terminal. The larger the twisting angle, the greater the clamping force. A larger clamping force can enable the first contact ring 21 and the second contact ring 23 to have better contact with the mating terminal, thereby obtaining a lower contact resistance.

[0048] When the connector terminal 100 is inserted into the mating terminal, the mating terminal is inserted into the insertion hole 25. The mating terminal abuts against a plurality of first elastic pieces 211 and a plurality of second elastic pieces 231 respectively. The plurality of first elastic pieces 211 and the plurality of second elastic pieces 231 undergo elastic deformation, and the plurality of first elastic pieces 211 and the plurality of second elastic pieces 231 elastically abut against the mating terminal, so that the connector terminal 100 and the mating terminal are stably inserted.

[0049] In this embodiment, by setting the first contact ring 21 and the second contact ring 23 as spiral structures, when the mating terminal is inserted into the connector terminal 100, the clamping force of the first contact ring 21 and the second contact ring 23 on the mating terminal is relatively large, which is beneficial to improving the stability of the insertion of the connector terminal 100 and the mating terminal. And the magnitude of the clamping force of the first contact ring 21 and the second contact ring 23 on the mating terminal can be adjusted by the twisting tool, and the manufacturer can set the clamping force of the connector terminal 100 in advance according to requirements.

[0050] Please refer to Figure 4 , the structure of the connector terminal 100 provided in the second embodiment of the present application is similar to the structure of the connector terminal 100 provided in the first embodiment of the present application. The main difference is that: the structure of the contact portion 20 of the connector terminal 100 in the second embodiment is different from the structure of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0051] In the second embodiment, the middle parts of the plurality of first elastic pieces 211 are bent towards the insertion hole 25, such that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connection ring 22. The middle parts of the plurality of second elastic pieces 231 are bent towards the insertion hole 25, such that the throat diameter of the second contact ring 23 is smaller than the inner diameter of the first connection ring 22 and the inner diameter of the second connection ring 24. It can be understood that both the first contact ring 21 and the second contact ring 23 are crown springs.

[0052] When the connector terminal 100 is inserted into the mating terminal, the mating terminal is inserted into the insertion hole 25. The mating terminal respectively abuts against the middle parts of the plurality of first elastic pieces 211 and the middle parts of the plurality of second elastic pieces 231. The plurality of first elastic pieces 211 and the plurality of second elastic pieces 231 undergo elastic deformation, and the middle parts of the plurality of first elastic pieces 211 and the middle parts of the plurality of second elastic pieces 231 elastically abut against the mating terminal.

[0053] In this embodiment, the connector terminal 100 is formed by stamping and curling with a mold, which has a simple structure, high stamping efficiency, and does not require a torsion tool such as a servo motor during the processing of the connector terminal 100, resulting in low processing costs.

[0054] Please refer to Figure 5 , the structure of the connector terminal 100 provided in the third embodiment of the present application is similar to the structure of the connector terminal 100 provided in the first embodiment of the present application. The main difference is that: the structure of the contact portion 20 of the connector terminal 100 in the third embodiment is different from the structure of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0055] In the third embodiment, the middle parts of the plurality of first elastic pieces 211 are bent towards the insertion hole 25, such that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connection ring 22. The plurality of second elastic pieces 231 are spirally arranged in a circle around the circumference of the first connection ring 22, such that the throat diameter of the second contact ring 23 is smaller than the inner diameter of the first connection ring 22 and the inner diameter of the second connection ring 24. It can be understood that in this embodiment, the first contact ring 21 is a crown spring and the second contact ring 23 is a torsion spring. In other embodiments, the first contact ring 21 is a torsion spring and the second contact ring 23 is a crown spring.

[0056] In this embodiment, by setting the first contact ring 21 as a crown spring, the first contact ring 21 is convenient for processing, and by setting the second contact ring 23 as a torsion spring, the second contact ring 23 can provide a relatively high clamping force.

[0057] Please refer to Figure 6 , the structure of the connector terminal 100 provided in the fourth embodiment of the present application is similar to the structure of the connector terminal 100 provided in the first embodiment of the present application. The main difference is that: the structure of the contact portion 20 of the connector terminal 100 in the fourth embodiment is different from the structure of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0058] In the fourth embodiment, the second connecting ring 24 is omitted, and the inner cavities of the second contact ring 23, the first connecting ring 22, and the first contact ring 21 are connected to form a plug hole 25; the middle portions of the plurality of first elastic pieces 211 are all bent toward the plug hole 25, so that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connecting ring 22. It can be understood that the first contact ring 21 is a crown spring.

[0059] The second contact ring 23 includes a mating ring 23a and a guide ring 23b. Each second elastic piece 231 includes a first section 231a and a second section 231b. One end of each of the first sections 231a is fixedly connected to the end of the first connecting ring 22 facing away from the first elastic piece 211. One end of each of the second sections 231b is fixedly connected, one by one, to the ends of the first sections 231a facing away from the first connecting ring 22. The first sections 231a are arranged in a circle around the circumference of the first connecting ring 22 to form the mating ring 23a. The ends of the first sections 231a facing away from the first connecting ring 22 are inclined toward the inside of the insertion hole 25, causing the inner diameter of the mating ring 23a to gradually decrease along the direction from the first connecting ring 22 toward the first sections 231a. Multiple second segments 231b are arranged in a circle at intervals around the circumference of the first connecting ring 22 to form a guide ring 23b. The multiple second segments 231b expand in the direction away from the plug-in hole 25 at one end away from the first segment 231a, so that the inner diameter of the guide ring 23b gradually increases along the direction of the first connecting ring 22 pointing to the first segment 231a.

[0060] In this embodiment, when the connector terminal 100 is plugged into the mating terminal, the mating terminal is sequentially inserted into the inner cavity of the guide ring 23b, the inner cavity of the mating ring 23a, the inner cavity of the first connecting ring 22, and the inner cavity of the first contact ring 21. The guide ring 23b guides the mating terminal to facilitate insertion. The end of the mating ring 23a, which is distal to the first connecting ring 22, abuts against the mating terminal. As can be understood, the contact point between the second contact ring 23 and the mating terminal is closer to the end of the connector terminal 100. The second contact ring 23 exerts a greater clamping force on the mating terminal, which helps improve the stability of the mating connection between the mating terminal and the connector terminal 100. Furthermore, the connector terminal 100 of this embodiment omits the second connecting ring 24, reducing the size of the connector terminal 100 along the X-axis, which facilitates a miniaturized design.

[0061] Please refer to Figure 7 The structure of the connector terminal 100 provided in the fifth embodiment of the present application is similar to the structure of the connector terminal 100 provided in the fourth embodiment of the present application, and the main difference is that the structure of the contact portion 20 of the connector terminal 100 of the fifth embodiment is different from the structure of the contact portion 20 of the connector terminal 100 of the fourth embodiment.

[0062] In the fifth embodiment, the structure of the second contact ring 23 is the same as that of the second contact ring 23 in the fourth embodiment, and the structure of the first contact ring 21 is different from that of the first contact ring 21 in the fourth embodiment. A plurality of first elastic pieces 211 of the first contact ring 21 are spirally arranged in a circle around the circumferential direction of the first connecting ring 22, so that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connecting ring 22. It can be understood that in this embodiment, the first contact ring 21 is a torsion spring.

[0063] The beneficial effects of the connector terminal 100 in the fifth embodiment of the present application are the same as those of the connector terminal 100 in the fourth embodiment, and will not be elaborated here.

[0064] Please refer to Figure 8 , the structure of the connector terminal 100 provided in the sixth embodiment of the present application is similar to the structure of the connector terminal 100 provided in the first embodiment of the present application. The main difference is that the structure of the contact part 20 of the connector terminal 100 in the sixth embodiment is different from the structure of the contact part 20 of the connector terminal 100 in the first embodiment.

[0065] In the sixth embodiment, the second connecting ring 24 is omitted from the contact part 20, and a guiding ring 26 is provided on the contact part 20. The inner diameter of the guiding ring 26 gradually increases in the direction from the first connecting ring 22 to the second elastic piece 231, and the inner diameter of the end of the guiding ring 26 facing the first connecting ring 22 is smaller than the inner diameter of the first connecting ring 22. One ends of the plurality of second elastic pieces 231 far from the first connecting ring 22 are fixedly connected to the guiding ring 26. The inner cavity of the guiding ring 26, the inner cavity of the second contact ring 23, the inner cavity of the first connecting ring 22 and the inner cavity of the first contact ring 21 are communicated to form a plugging hole 25. One ends of the plurality of second elastic pieces 231 far from the first connecting ring 22 are inclined towards the inside of the plugging hole 25, so that the inner diameter of the second contact ring 23 gradually decreases in the direction from the first connecting ring 22 to the second elastic piece 231. A plurality of first elastic pieces 211 are spirally arranged in a circle around the circumferential direction of the first connecting ring 22, so that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connecting ring 22.

[0066] In this embodiment, when the connector terminal 100 is inserted into the mating terminal, the mating terminal is sequentially inserted into the inner cavity of the guiding ring 26, the inner cavity of the second contact ring 23, the inner cavity of the first connecting ring 22, and the inner cavity of the first contact ring 21. The guiding ring 26 guides the mating terminal, facilitating the insertion. Moreover, one ends of multiple second elastic pieces 231 away from the first connecting ring 22 are fixedly connected to the guiding ring 26, and the guiding ring 26 can protect the multiple second elastic pieces 231, which is beneficial to improving the service life of the connector terminal 100. In addition, one ends of multiple second elastic pieces 231 away from the first connecting ring 22 are inclined towards the insertion hole 25. When the mating terminal is inserted into the connector terminal 100, the clamping force of the multiple second elastic pieces 231 on the mating terminal is greater, thereby improving the stability of the insertion of the connector terminal 100 and the mating terminal.

[0067] Please refer to Figure 9 、 Figure 10 and Figure 11 , the structure of the connector terminal 100 provided in the seventh embodiment of the present application is similar to the structure of the connector terminal 100 provided in the sixth embodiment of the present application. The main difference is that: the structure of the contact portion 20 of the connector terminal 100 in the seventh embodiment is different from the structure of the contact portion 20 of the connector terminal 100 in the sixth embodiment.

[0068] In the seventh embodiment, the structure of the second contact ring 23 is different from the structure of the second contact ring 23 in the sixth embodiment. One ends of multiple second elastic pieces 231 of the second contact ring 23 away from the first connecting ring 22 are inclined towards the insertion hole 25, and multiple second elastic pieces 231 are spirally arranged in a circle around the circumferential direction of the first connecting ring 22. The inner diameter of the second contact ring 23 first decreases and then increases along the direction from the first connecting ring 22 to the second elastic piece 231. The inner diameter of the guiding ring 26 first decreases and then increases along the direction from the first connecting ring 22 to the second elastic piece 231. Among them, the throat diameter (the minimum inner diameter of the guiding ring 26) of the guiding ring 26 is equal to the throat diameter (the minimum inner diameter of the first contact ring 21) of the first contact ring 21 and the throat diameter (the minimum inner diameter of the second contact ring 23) of the second contact ring 23.

[0069] In other embodiments, the diameter of the connector terminal 100 can be set to be unequal front and back, but the diameter of the head of the connector terminal 100 needs to be smaller than the diameter of the tail of the connector terminal 100. Generally, the throat diameter of the guiding ring 26 is slightly larger than the throat diameter of the second contact ring 23. The throat diameter of the first contact ring 21 has no relation with the throat diameter of the guiding ring 26 and the throat diameter of the second contact ring 23. The throat diameter of the first contact ring 21 can be smaller than or larger than the throat diameter of the guiding ring 26 and the throat diameter of the second contact ring 23.

[0070] In this embodiment, when the terminal to be mated 200 is inserted into the connector terminal 100, the terminal to be mated 200 first inserts into the entrance portion of the guiding ring 26. At this time, the throat diameters of the guiding ring 26, the second contact ring 23, and the first contact ring 21 remain unchanged. As the terminal to be mated 200 is gradually inserted, since the diameter of the terminal to be mated 200 is greater than the throat diameters of the guiding ring 26, the second contact ring 23, and the first contact ring 21 when they are not deformed, the terminal to be mated 200 will force the guiding ring 26, the second contact ring 23, and the first contact ring 21 to undergo elastic deformation. At this time, the throat diameters of the guiding ring 26, the second contact ring 23, and the first contact ring 21 all gradually increase. The first elastic piece 211 of the first contact ring 21 and the second elastic piece 231 of the second contact ring 23 undergo elastic deformation along the radial direction of the connector terminal 100.

[0071] After the terminal to be mated 200 is completely inserted, the reaction forces of the first elastic piece 211 and the second elastic piece 231 against the terminal to be mated 200 reach equilibrium. At this time, the throat diameters of the guiding ring 26, the second contact ring 23, and the first contact ring 21 are all stabilized at the expanded sizes. The first elastic piece 211, the second elastic piece 231, and the guiding ring 26 all generate compressive forces on the terminal to be mated 200 to ensure the close contact between the terminal to be mated 200 and the connector terminal 100.

[0072] In this embodiment, when the terminal to be mated 200 is inserted into the connector terminal 100, the guiding ring 26, the first elastic piece 211, and the second elastic piece 231 are all in close contact with the terminal to be mated 200. The contact area between the terminal to be mated 200 and the connector terminal 100 is larger, thereby improving the current-carrying capacity and the stability of the insertion of the terminal to be mated 200 into the connector terminal 100.

[0073] Please refer to Figure 12 and Figure 13 , the structure of the connector terminal 100 provided in the eighth embodiment of the present application is similar to the structure of the connector terminal 100 provided in the first embodiment of the present application. The main difference is that the structure of the first contact ring 21 of the contact portion 20 of the connector terminal 100 in the eighth embodiment is different from the structure of the first contact ring 21 of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0074] In the eighth embodiment, the first contact ring 21 includes a main body 212 and a plurality of cantilevers 213. One end of the main body 212 is connected to one end of the first connecting ring 22, and the end of the main body 212 facing away from the first connecting ring 22 is connected to the connecting portion 10. The inner cavity of the second connecting ring 24, the inner cavity of the second contact ring 23, the inner cavity of the first connecting ring 22, and the inner cavity of the main body 212 are connected to form an insertion hole 25. The outer circumference of the main body 212 is provided with a plurality of fixing holes 2121, each of which is connected to the inner cavity of the main body 212. The fixing holes 2121 are arranged in a circle around the circumference of the first connecting ring 22.

[0075] One end of the multiple cantilevers 213 is connected to the main body 212, and the other end of the multiple cantilevers 213 is located in the insertion hole 25. The multiple cantilevers 213 are arranged in a circle around the circumference of the first connecting ring 22 at intervals. The throat diameter formed by the multiple cantilevers 213 is smaller than the inner diameter of the first connecting ring 22 and the inner diameter of the second connecting ring 24.

[0076] Specifically, each cantilever 213 includes a fixedly connected connecting segment 2131 and a mating segment 2132. One end of the connecting segments 2131 of each cantilever 213 is fixedly connected to the wall of each fixing hole 2121. The other ends of the connecting segments 2131 of each cantilever 213 extend toward the first connecting ring 22 and tilt toward the insertion hole 25. One end of each mating segment 2132 is fixedly connected to one end of each connecting segment 2131. The other ends of each mating segment 2132 are tilted outward from the insertion hole 25. The tilted mating segments 2132 form an angle A with the horizontal direction of 10°-30°. The inner diameter of the first contact ring 21 decreases and then increases along the direction from the first connecting ring 22 to the second spring 231. The throat diameter of the first contact ring 21 is smaller than the diameter of the mating terminal 200. Typically, the throat diameter of the first contact ring 21 is 0.1mm-0.3mm smaller than the diameter of the mating terminal 200.

[0077] When the mating terminal 200 is plugged into the connector terminal 100, the mating terminal 200 is sequentially inserted into the inner cavity of the second connecting ring 24, the inner cavity of the second contact ring 23, the inner cavity of the first connecting ring 22, and the inner cavity of the first contact ring 21. The mating terminal 200 is respectively pressed against the multiple second elastic pieces 231 and the multiple cantilevers 213. The multiple second elastic pieces 231 and the multiple cantilevers 213 are elastically deformed along the radial direction of the connector terminal 100. The multiple second elastic pieces 231 and the multiple cantilevers 213 generate elastic force and act on the mating terminal 200, thereby improving the current carrying capacity of the connector terminal 100 and the stability of the connection between the connector terminal 100 and the mating terminal 200. Figure 1 and Figure 14As shown in the figure, the present application also provides a manufacturing method for a connector terminal 100, including the following steps: Stamping a row of spaced first through slots 15 and a row of spaced second through slots 16 on a metal sheet. A row of first through slots 15 is spaced from a row of second through slots 16, and a row of first through slots 15 is closer to the middle of the metal sheet than a row of second through slots 16. A main board 14 is formed on the side of the metal sheet where the first through slots 15 face away from the second through slots 16.

[0078] The metal sheet is subjected to a curling process so that a row of first through slots 15 encloses a circle to form a first contact ring 21, a row of second through slots 16 encloses a circle to form a second contact ring 23, the main board 14 encloses a circle to form a connecting portion 10, and a first connecting ring 22 is formed in a circle between a row of first through slots 15 and a row of second through slots 16 on the metal sheet. A second connecting ring 24 is formed in a circle on the side of a plurality of second elastic pieces 231 facing away from the first connecting ring 22 on the metal sheet.

[0079] Specifically, the main board 14 includes a body plate 141, a first sub - plate 142, a second sub - plate 143, a connecting plate 144, and a flattening protrusion 145. One end of the first sub - plate 142, one end of the second sub - plate 143, and one end of the connecting plate 144 are fixedly connected to one end of the body plate 141, and the connecting plate 144 is located between the first sub - plate 142 and the second sub - plate 143. The flattening protrusion 145 is located on one side of the body plate 141 in the thickness direction. When the curling process is completed, the body plate 141 encloses a circle to form the body 11 of the connecting portion 10, and the connecting plate 144 is in an arc shape. The flattening protrusion 145 encloses a circle to form an annular positioning boss 111. After the curling process is completed, the first sub - plate 142 and the second sub - plate 143 also need to be bent, and the bent first sub - plate 142 and second sub - plate 143 form a cover plate 12 of the connecting portion 10, and the cover plate 12 closes the inner cavity of the body 11.

[0080] Both the first through slots 15 and the second through slots 16 are strip - shaped slots. A plurality of first through slots 15 are parallel and spaced, and a first elastic piece 211 is formed between two adjacent first through slots 15; a plurality of second through slots 16 are parallel and spaced, and a second elastic piece 231 is formed between two adjacent second through slots 16.

[0081] After the curling process is completed, the first contact ring 21 and the second contact ring 23 are twisted so that a plurality of first elastic pieces 211 are spirally arranged and a plurality of second elastic pieces 231 are spirally arranged. Specifically, first, the connecting portion 10 is stabilized, and then a twisting tool (a servo motor or a mechanical transmission mechanism) is used to clamp the second connecting ring 24. The twisting tool drives the second connecting ring 24 to rotate, and the second connecting ring 24 then drives the second contact ring 23, the first connecting ring 22, and the first contact ring 21 to rotate.

[0082] As Figure 4 and Figure 14As shown, the manufacturing method of the connector terminal 100 of the second embodiment is similar to that of the connector terminal 100 of the first embodiment. The main difference is that after stamping the metal sheet, both the first elastic piece 211 and the second elastic piece 231 are arc-shaped; after the curling process, multiple first elastic pieces 211 all bend towards the inner cavity of the first contact ring 21, and multiple second elastic pieces 231 all bend towards the inner cavity of the second contact ring 23.

[0083] As Figure 5 and Figure 14 shown, the manufacturing method of the connector terminal 100 of the third embodiment is similar to that of the connector terminal 100 of the first embodiment. The main difference is that after stamping the metal sheet, the first elastic piece 211 is arc-shaped; after the curling process, multiple first elastic pieces 211 all bend towards the inner cavity of the first contact ring 21. After the curling process, it is also necessary to twist the second contact ring 23 so that multiple second elastic pieces 231 are spirally arranged. Specifically, two twisting tools are used to clamp the first connection ring 22 and the second connection ring 24 respectively, and then the two twisting tools rotate in opposite directions, or one of the first connection ring 22 and the second connection ring 24 is first stabilized, and then the other of the first connection ring 22 and the second connection ring 24 is twisted using the twisting tool.

[0084] As Figure 6 and Figure 15 shown, the manufacturing method of the connector terminal 100 of the fourth embodiment is similar to that of the connector terminal 100 of the first embodiment. The main difference is that the connector terminal of the fourth embodiment omits the second connection ring 24, and after stamping the metal sheet, the first elastic piece 211 is arc-shaped, multiple second elastic pieces 231 are inclined in the first direction, and the ends of multiple second elastic pieces 231 far from the first elastic piece 211 bend in the second direction. The first direction is the thickness direction of the metal sheet before the curling process, and the second direction is opposite to the first direction. Exemplarily, if the first direction is the direction perpendicular to the front surface of the metal sheet, then the second direction is the direction perpendicular to the back surface of the metal sheet; conversely, if the first direction is the direction perpendicular to the back surface of the metal sheet, then the second direction is the direction perpendicular to the front surface of the metal sheet.

[0085] After the curling process, multiple first elastic pieces 211 all bend towards the inner cavity of the first contact ring 21, multiple second elastic pieces 231 are inclined towards the inner cavity of the second contact ring 23, and the ends of multiple second elastic pieces 231 far from the first elastic piece 211 all bend in the direction away from the inner cavity of the second contact ring 23.

[0086] As Figure 7 and Figure 15As shown, the manufacturing method of the connector terminal 100 of the fifth embodiment is similar to that of the connector terminal 100 of the first embodiment. The main difference is that: the second connection ring 24 is omitted in the connector terminal 100 of the fifth embodiment. And after stamping the metal sheet, a plurality of second elastic pieces 231 incline in the first direction, and one end of the plurality of second elastic pieces 231 away from the first elastic piece 211 bends in the second direction. The first direction is the thickness direction of the metal sheet before curling, and the second direction is opposite to the first direction. After the curling process is completed, a plurality of second elastic pieces 231 incline towards the inner cavity of the second contact ring 23, and one end of the plurality of second elastic pieces 231 away from the first elastic piece 211 bends in the direction away from the inner cavity of the second contact ring 23. After the curling process is completed, it is also necessary to twist the first contact ring 21 so that a plurality of first elastic pieces 211 are arranged in a spiral. Specifically, first, the connecting portion 10 is fixed, and then a twisting tool is used to hold the first connection ring 22, and the twisting tool drives the first connection ring 22 to rotate, and the first connection ring 22 drives the first contact ring 21 to rotate. If the twisting force is insufficient, a positioning hole can be provided in the first connection ring 22, and after the twisting tool is positioned with the positioning hole, the twisting is carried out again.

[0087] As Figure 8 and Figure 16 shown, the manufacturing method of the connector terminal 100 of the sixth embodiment is similar to that of the connector terminal 100 of the first embodiment. The main difference is that: a guide plate 17 is formed on one side of a plurality of second elastic pieces 231 facing away from the first elastic piece 211; after stamping the metal sheet, a plurality of second elastic pieces 231 incline in the first direction, and one end of the guide plate 17 away from the second elastic piece 231 bends in the second direction. The first direction is the thickness direction of the metal sheet before curling, and the second direction is opposite to the first direction. After the curling process is completed, a plurality of second elastic pieces 231 incline towards the inner cavity of the second contact ring 23, and the guide plate 17 encloses a circle to form a guide ring 26, and the inner diameter of the guide ring 26 gradually increases along the direction from the first connection ring 22 to the second elastic piece 231. After the curling process is completed, it is also necessary to twist the first contact ring 21 so that a plurality of first elastic pieces 211 are arranged in a spiral.

[0088] As Figure 9 and Figure 16 shown, the manufacturing method of the connector terminal 100 of the seventh embodiment is similar to that of the connector terminal 100 of the sixth embodiment. The main difference is that: after the curling process is completed, it is also necessary to twist the first contact ring 21 and the second contact ring 23 so that a plurality of first elastic pieces 211 are arranged in a spiral, and a plurality of second elastic pieces 231 are arranged in a spiral.

[0089] As Figure 12 and Figure 17As shown, the manufacturing method of the connector terminal 100 of the eighth embodiment is similar to that of the connector terminal 100 of the first embodiment. The main difference is that: the first through groove 15 is a U-shaped groove, and a cantilever 213 is provided in the first through groove 15. After the metal sheet is stamped, the cantilever 213 inclines in the first direction, and the end of the cantilever 213 close to the second elastic piece 231 bends in the second direction. The first direction is the thickness direction of the metal sheet before the curling process, and the second direction is opposite to the first direction. After the curling process is completed, the cantilever 213 inclines towards the inner cavity of the first contact ring 21, and the end of the cantilever 213 close to the second elastic piece 231 bends in the direction away from the inner cavity of the first contact ring 21.

[0090] The embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application.

Claims

1. A connector terminal, characterized in that, The connector terminal comprises: a connecting portion; and The contact portion includes a first connecting ring, a first contact ring and a second contact ring, one end of the first contact ring is connected to the connecting portion, the other end of the first contact ring is connected to one end of the first connecting ring, and the second contact ring is connected to the other end of the first connecting ring, the first contact ring, the first connecting ring and the second contact ring are coaxial; the connecting portion and the contact portion are an integral structure.

2. The connector terminal according to claim 1, wherein, The first contact ring includes a plurality of first elastic sheets, one end of each of the first elastic sheets is connected to the first connecting ring, and the plurality of first elastic sheets are arranged in a circle at intervals around the circumference of the first connecting ring, and the ends of the plurality of first elastic sheets facing away from the first connecting ring are connected to the connecting portion; the second contact ring includes a plurality of second elastic sheets, one end of each of the second elastic sheets is connected to the first connecting ring, and the plurality of second elastic sheets are arranged in a circle at intervals around the circumference of the first connecting ring.

3. The connector terminal according to claim 2, wherein The contact portion further includes a second connecting ring, and ends of the plurality of second elastic pieces away from the first connecting ring are all connected to the second connecting ring; the inner cavity of the second connecting ring, the inner cavity of the second contact ring, the inner cavity of the first connecting ring, and the inner cavity of the first contact ring are connected to form an insertion hole; The plurality of first elastic pieces are arranged in a spiral around the circumference of the first connecting ring, so that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; the plurality of second elastic pieces are arranged in a spiral around the circumference of the first connecting ring, so that the throat diameter of the second contact ring is smaller than the inner diameter of the first connecting ring and the inner diameter of the second connecting ring.

4. The connector terminal according to claim 3, wherein The outer circumferential surface of the first connecting ring is provided with a plurality of positioning holes, and the plurality of positioning holes are arranged at intervals around the circumference of the first connecting ring; And / or a plurality of positioning grooves are provided on an end surface of the second connecting ring facing away from the second elastic piece, and the plurality of positioning grooves are arranged at intervals around the circumference of the second connecting ring.

5. The connector terminal according to claim 2, characterized in that, The contact portion further includes a second connecting ring, and ends of the plurality of second elastic pieces away from the first connecting ring are all connected to the second connecting ring; the inner cavity of the second connecting ring, the inner cavity of the second contact ring, the inner cavity of the first connecting ring, and the inner cavity of the first contact ring are connected to form an insertion hole; Multiple first elastic pieces are bent into the plug hole, so that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; multiple second elastic pieces are bent into the plug hole, so that the throat diameter of the second contact ring is smaller than the inner diameter of the first connecting ring and the inner diameter of the second connecting ring.

6. The connector terminal according to claim 2, wherein The contact portion further includes a second connecting ring, and ends of the plurality of second elastic pieces away from the first connecting ring are all connected to the second connecting ring; the inner cavity of the second connecting ring, the inner cavity of the second contact ring, the inner cavity of the first connecting ring, and the inner cavity of the first contact ring are connected to form an insertion hole; The plurality of first elastic sheets are all bent into the plug hole, so that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; the plurality of second elastic sheets are arranged in a circumferential spiral around the first connecting ring, so that the throat diameter of the second contact ring is smaller than the inner diameter of the first connecting ring and the inner diameter of the second connecting ring.

7. The connector terminal according to claim 2, wherein The inner cavity of the second contact ring, the inner cavity of the first connecting ring, and the inner cavity of the first contact ring are connected to form an insertion hole; the plurality of first elastic pieces are bent into the insertion hole, so that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; The second contact ring includes a guide ring and a matching ring; each second elastic piece includes a first section and a second section, one end of each of the first sections is connected to an end of the first connecting ring away from the first elastic piece; one end of each of the second sections is connected to an end of each of the first sections away from the first connecting ring in a one-to-one correspondence; Multiple first segments are arranged in a circle at intervals around the circumference of the first connecting ring to form the matching ring, and the inner diameter of the matching ring gradually decreases along the direction of the first connecting ring pointing to the first segment; multiple second segments are arranged in a circle at intervals around the circumference of the first connecting ring to form the guide ring, and the inner diameter of the guide ring gradually increases along the direction of the first connecting ring pointing to the first segment.

8. The connector terminal according to claim 2, wherein The plurality of first elastic pieces are arranged in a spiral around the circumference of the first connecting ring, so that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; The second contact ring includes a guide ring and a matching ring; each second elastic piece includes a first section and a second section, one end of each of the first sections is connected to an end of the first connecting ring away from the first elastic piece; one end of each of the second sections is connected to an end of each of the first sections away from the first connecting ring in a one-to-one correspondence; Multiple first segments are arranged in a circle at intervals around the circumference of the first connecting ring to form the matching ring, and the inner diameter of the matching ring gradually decreases along the direction of the first connecting ring pointing to the first segment; multiple second segments are arranged in a circle at intervals around the circumference of the first connecting ring to form the guide ring, and the inner diameter of the guide ring gradually increases along the direction of the first connecting ring pointing to the first segment.

9. The connector terminal according to claim 2, wherein, The contact portion further includes a guide ring, and ends of the plurality of second elastic pieces away from the first connecting ring are all connected to the guide ring; the inner cavity of the guide ring, the inner cavity of the second contact ring, the inner cavity of the first connecting ring, and the inner cavity of the first contact ring are connected to form a plug hole; Multiple first spring pieces are arranged in a circumferential spiral around the first connecting ring, so that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; the ends of multiple second spring pieces away from the first connecting ring are all inclined toward the inside of the plug-in hole, so that the inner diameter of the second contact ring gradually decreases along the direction from the first connecting ring to the second spring pieces; the inner diameter of the guide ring gradually increases along the direction from the first connecting ring to the second spring pieces.

10. The connector terminal according to claim 2, wherein The contact portion further includes a guiding ring, and one ends of the plurality of second elastic pieces away from the first connecting ring are all connected to the guiding ring; the inner cavity of the guiding ring, the inner cavity of the second contact ring, the inner cavity of the first connecting ring and the inner cavity of the first contact ring are communicated to form a plugging hole; The plurality of first elastic pieces are spirally arranged in a circle around the circumference of the first connecting ring, so that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; one ends of the plurality of second elastic pieces away from the first connecting ring are all inclined towards the inside of the plugging hole, and the plurality of second elastic pieces are spirally arranged in a circle around the circumference of the first connecting ring, and the inner diameter of the guiding ring gradually increases along the direction from the first connecting ring to the second elastic piece.

11. The connector terminal according to claim 10, wherein The throat diameter of the guiding ring is equal to the throat diameter of the first contact ring and the throat diameter of the second contact ring.

12. The connector terminal according to claim 1, characterized in that, The contact portion further includes a second connecting ring, and one end of the second contact ring away from the first connecting ring is connected to the second connecting ring; the first contact ring, the first connecting ring, the second contact ring and the second connecting ring are coaxial; The first contact ring includes a main body and a plurality of cantilevers, one end of the main body is connected to one end of the first connecting ring, and one end of the main body away from the first connecting ring is connected to the connecting portion; the inner cavity of the second connecting ring, the inner cavity of the second contact ring, the inner cavity of the first connecting ring and the inner cavity of the main body are communicated to form a plugging hole; one ends of the plurality of cantilevers are connected to the main body, the other ends of the plurality of cantilevers are located in the plugging hole, the plurality of cantilevers are arranged in a circle at intervals around the circumference of the first connecting ring, and the throat diameter formed by the plurality of cantilevers is smaller than the inner diameter of the first connecting ring and the inner diameter of the second connecting ring; The second contact ring includes a plurality of second elastic pieces, one ends of the plurality of second elastic pieces are all connected to the first connecting ring, one ends of the plurality of second elastic pieces away from the first connecting ring are all connected to the second connecting ring, and the plurality of second elastic pieces are spirally arranged in a circle around the circumference of the first connecting ring, so that the throat diameter of the second contact ring is smaller than the inner diameter of the first connecting ring and the inner diameter of the second connecting ring.

13. A manufacturing method of a connector terminal, characterized in that, Including the following steps: Stamping a row of spaced first through slots and a row of spaced second through slots on a metal sheet, the row of first through slots is spaced from the row of second through slots, and the row of first through slots is closer to the middle of the metal sheet than the row of second through slots; Performing a curling process on the metal sheet, so that the row of first through slots encloses a circle to form a first contact ring, the row of second through slots encloses a circle to form a second contact ring, and a first connecting ring is formed in a circle between the row of first through slots and the row of second through slots of the metal sheet.

14. The manufacturing method of the connector terminal according to claim 13, characterized in that, The plurality of first through slots are spaced, and a first elastic piece is formed between two adjacent first through slots; the plurality of second through slots are spaced, and a second elastic piece is formed between two adjacent second through slots; a second connecting ring is formed in a circle on one side of the plurality of second elastic pieces away from the first connecting ring of the metal sheet; After the curling process is completed, twist the first contact ring and the second contact ring so that a plurality of the first elastic pieces are arranged in a spiral pattern and a plurality of the second elastic pieces are arranged in a spiral pattern.

15. The manufacturing method of the connector terminal according to claim 13, wherein, A plurality of the first through slots are spaced apart, and a first elastic piece is formed between two adjacent first through slots; a plurality of the second through slots are spaced apart, and a second elastic piece is formed between two adjacent second through slots; a second connection ring is formed in a circle on one side of the plurality of second elastic pieces away from the first connection ring of the metal sheet. After the metal sheet is stamped, both the first elastic piece and the second elastic piece are arc-shaped; after the curling process is completed, a plurality of the first elastic pieces all bend towards the inner cavity of the first contact ring, and a plurality of the second elastic pieces all bend towards the inner cavity of the second contact ring.

16. The manufacturing method of the connector terminal according to claim 13, wherein, A plurality of the first through slots are spaced apart, and a first elastic piece is formed between two adjacent first through slots; a plurality of the second through slots are spaced apart, and a second elastic piece is formed between two adjacent second through slots; a second connection ring is formed in a circle on one side of the plurality of second elastic pieces away from the first connection ring of the metal sheet. After the metal sheet is stamped, the first elastic piece is arc-shaped; after the curling process is completed, a plurality of the first elastic pieces all bend towards the inner cavity of the first contact ring; twist the second contact ring so that a plurality of the second elastic pieces are arranged in a spiral pattern.

17. The manufacturing method of the connector terminal according to claim 13, characterized in that, A plurality of the first through slots are spaced apart, and a first elastic piece is formed between two adjacent first through slots; a plurality of the second through slots are spaced apart, and a second elastic piece is formed between two adjacent second through slots. After the metal sheet is stamped, a plurality of the second elastic pieces are inclined in a first direction, and one end of a plurality of the second elastic pieces away from the first elastic piece bends in a second direction, the first direction being the thickness direction of the metal sheet before the curling process, and the second direction being opposite to the first direction. After the curling process is completed, a plurality of the first elastic pieces all bend towards the inner cavity of the first contact ring, a plurality of the second elastic pieces are inclined towards the inner cavity of the second contact ring, and one end of a plurality of the second elastic pieces away from the first elastic piece all bends in a direction away from the inner cavity of the second contact ring.

18. The manufacturing method of the connector terminal according to claim 13, wherein, A plurality of the first through slots are spaced apart, and a first elastic piece is formed between two adjacent first through slots; a plurality of the second through slots are spaced apart, and a second elastic piece is formed between two adjacent second through slots. After the metal sheet is stamped, a plurality of the second elastic pieces are inclined in a first direction, and one end of a plurality of the second elastic pieces away from the first elastic piece bends in a second direction, the first direction being the thickness direction of the metal sheet before the curling process, and the second direction being opposite to the first direction. After the curling process is completed, a plurality of the second elastic pieces are inclined towards the inner cavity of the second contact ring, and one end of a plurality of the second elastic pieces away from the first elastic piece all bends in a direction away from the inner cavity of the second contact ring; twist the first contact ring so that a plurality of the first elastic pieces are arranged in a spiral pattern.

19. The method for manufacturing a connector terminal according to claim 13, wherein, A plurality of the first through slots are spaced apart, and a first elastic piece is formed between two adjacent ones of the first through slots; a plurality of the second through slots are spaced apart, and a second elastic piece is formed between two adjacent ones of the second through slots; a guide plate is formed on a side of the plurality of the second elastic pieces facing away from the first elastic piece; After stamping the metal sheet, the plurality of the second elastic pieces incline in a first direction, and one end of the guide plate away from the second elastic pieces bends in a second direction, the first direction being the thickness direction of the metal sheet before curling, and the second direction being opposite to the first direction; After completing the curling process, the plurality of the second elastic pieces incline towards the inner cavity of the second contact ring, the guide plates enclose to form a guide ring, and the inner diameter of the guide ring gradually increases along the direction from the first connecting ring to the second elastic pieces; twist the first contact ring so that the plurality of the first elastic pieces are spirally arranged.

20. The manufacturing method of the connector terminal according to claim 19, wherein After completing the curling process, twist the second contact ring so that the plurality of the second elastic pieces are spirally arranged.

21. The manufacturing method of the connector terminal according to claim 13, wherein, A cantilever is provided in the first through slot; a plurality of the second through slots are spaced apart; a second elastic piece is formed between two adjacent ones of the second through slots; the metal sheet forms a second connecting ring in a circle on a side of the plurality of the second elastic pieces facing away from the first connecting ring; After stamping the metal sheet, the cantilever inclines in a first direction, and one end of the cantilever close to the second elastic piece bends in a second direction, the first direction being the thickness direction of the metal sheet before curling, and the second direction being opposite to the first direction; After completing the curling process, the cantilever inclines towards the inner cavity of the first contact ring, and one end of the cantilever close to the second elastic piece bends in a direction away from the inner cavity of the first contact ring; twist the second contact ring so that the plurality of the second elastic pieces are spirally arranged.

22. A connector, characterized in that, The connector includes a rubber core, and the rubber core is provided with the connector terminal according to any one of claims 1 to 12.

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