Connector terminal and connector

Abstract

The connector terminal comprises a connecting part and a contact part, the connecting part comprises a body, a positioning boss is arranged on the peripheral surface of the body, 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, and the other 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, 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] This application relates to the field of electrical connection technology, and in particular to a connector terminal and a connector having said connector terminal. Background Technology

[0002] Connectors are widely used in various fields, including automobiles, communications, computers, consumer electronics, industry, and transportation. The connector terminals, as key components, are primarily used to transmit current or signals. Existing terminals generally consist of a housing and multiple terminal blocks, each connected to the housing. However, existing multi-contact terminals are assembled from multiple components, resulting in a large number of parts and a complex structure. Utility Model Content

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

[0004] This application provides a connector terminal, which includes a connecting portion and a contact portion. The connecting portion includes a body with a positioning boss on its outer peripheral surface. 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 body, and the other end of the first contact ring is connected to one end of the first connecting ring. 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.

[0005] This application also provides a connector, which includes a core in which the connector terminals are disposed.

[0006] In this application, the connector terminal is an integral structure, which is simple in structure and low in manufacturing cost. Secondly, the first contact ring and the second contact ring are easier to deform and form better contact with the terminal to be mated, so as to realize the transmission of larger current; therefore, the connector terminal is not only simple in structure and low in manufacturing cost, but also can meet the requirements of high current transmission. Attached Figure Description

[0007] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0008] Figure 1 This is a three-dimensional structural diagram of the connector terminal provided in the first embodiment of this application.

[0009] Figure 2 yes Figure 1 A three-dimensional structural schematic diagram of one embodiment of the connector terminal in the diagram.

[0010] Figure 3 yes Figure 1A three-dimensional structural schematic diagram of another embodiment of the connector terminal.

[0011] Figure 4 This is a three-dimensional structural diagram of the connector terminal provided in the second embodiment of this application.

[0012] Figure 5 This is a three-dimensional structural diagram of the connector terminal provided in the third embodiment of this application.

[0013] Figure 6 This is a three-dimensional structural diagram of the connector terminal provided in the fourth embodiment of this application.

[0014] Figure 7 This is a three-dimensional structural diagram of the connector terminal provided in the fifth embodiment of this application.

[0015] Figure 8 This is a three-dimensional structural diagram of the connector terminal provided in the sixth embodiment of this application.

[0016] Figure 9 This is a three-dimensional structural diagram of the connector terminal provided in the seventh embodiment of this application.

[0017] Figure 10 yes Figure 9 A schematic diagram of the assembly structure of the connector terminals and the terminals to be mated.

[0018] Figure 11 yes Figure 10 A cross-sectional view of the connector terminals and the terminals to be mated.

[0019] Figure 12 This is a three-dimensional structural diagram of the connector terminal provided in the eighth embodiment of this application.

[0020] Figure 13 yes Figure 12 A cross-sectional view of the connector terminals.

[0021] Figure 14 yes Figure 1 The diagram shows the flattened state of the connector terminals.

[0022] Figure 15 yes Figure 6 The diagram shows the flattened state of the connector terminals.

[0023] Figure 16 yes Figure 8 The diagram shows the flattened state of the connector terminals.

[0024] Figure 17 yes Figure 12 The diagram shows the flattened state of the connector terminals. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that, in this document, the reference to "embodiment" or "implementation" means that a specific feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0027] The terms "first" and "second" appearing in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. It should be noted that, unless otherwise explicitly stated and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Please refer to Figure 1 The connector provided in the first embodiment of this application includes connector terminals 100 and a core, with the connector terminals 100 installed in the mounting holes of the core. The connector is plugged into a mating connector, with the connector terminals 100 of the connector plugged into the mating terminals of the mating connector to achieve electrical connection. One of the connectors, the one to be mated, is a male connector, and the other is a female connector.

[0029] The connector terminal 100 includes a connecting portion 10 and a contact portion 20 fixedly connected along the X-axis direction, with the connecting portion 10 and the contact portion 20 being an integral structure. The contact portion 20 includes a first contact ring 21, a first connecting ring 22, a second contact ring 23, and a second connecting ring 24. One end of the first contact ring 21 along the X-axis direction is fixedly connected to one end of the connecting 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 connecting 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 connecting ring 22 along the X-axis direction, and the end of the second contact ring 23 away from the first connecting ring 22 is fixedly connected to one end of the second connecting ring 24 along the X-axis direction. This X-axis direction is parallel to the axis of the first connecting ring.

[0030] The connecting portion 10, the first contact ring 21, the first connecting ring 22, the second contact ring 23, and the second connecting ring 24 are coaxial. The connecting portion 10, the first contact ring 21, the first connecting ring 22, and the second contact ring 23 are integrally formed. The inner cavities of the second connecting ring 24, the second contact ring 23, the first connecting ring 22, and the first contact ring 21 are connected to form a insertion hole 25.

[0031] The first contact ring 21 includes a plurality of first spring pieces 211. One end of each of the first spring pieces 211 along the X-axis is fixedly connected to one end of the first connecting ring 22 along the X-axis. The ends of each of the first spring pieces 211 away from the first connecting ring 22 are fixedly connected to one end of the connecting part 10 along the X-axis. The plurality of first spring pieces 211 are arranged in a circle around the first connecting ring 22 at intervals. The second contact ring 23 includes a plurality of second spring pieces 231. One end of each of the second spring pieces 231 along the X-axis is fixedly connected to one end of the first connecting ring 22 away from the first spring pieces 211. The ends of each of the second spring pieces 231 away from the first connecting ring 22 are fixedly connected to one end of the second connecting ring 24 along the X-axis. The plurality of second spring pieces 231 are arranged in a circle around the first connecting ring 22 at intervals. In this embodiment, a plurality of first spring contacts 211 are arranged in a circle around the first connecting ring 22 at uniform intervals. The distance between two adjacent first spring contacts 211 ranges from 0.6t to 2t, where t is the thickness of the first spring contact 211. The smaller the distance between two adjacent first spring contacts 211, the better the current carrying capacity of the connector terminal 100. A plurality of second spring contacts 231 are arranged in a circle around the first connecting ring 22 at uniform intervals. The distance between two adjacent second spring contacts 231 ranges from 0.6X to 2X, where X is the thickness of the second spring contact 231. The smaller the distance between two adjacent second spring contacts 231, the better the current carrying capacity of the connector terminal 100.

[0032] The connector terminal 100 can be manufactured by a rolling process. The rolling butt joint of the connector terminal 100 is less than 0.2mm. The smaller butt joint can increase the cross-sectional area of ​​the connector terminal 100, thereby improving the current carrying capacity and reducing the risk of deformation of the connector terminal 100 under stress.

[0033] 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 of new energy vehicles, electric bicycles, electric motorcycles, electric scooters, and power tools. Its applications are very wide and are not limited to this example.

[0034] In this embodiment, the connector terminal 100 is an integral 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 more easily deformed to form better contact with the terminal to be mated, thereby enabling the transmission of larger currents. Therefore, the connector terminal 100 not only has a simple structure and low manufacturing cost, but also meets the requirements for high current transmission.

[0035] In this configuration, multiple first spring contacts 211 are arranged at uniform intervals around the circumference of the first connecting ring 22, and multiple second spring contacts 231 are also arranged at uniform intervals around the circumference of the first connecting ring 22. This arrangement ensures more even force distribution when the connector terminal 100 is inserted into the terminal to be mated, helping to prevent wear caused by uneven force distribution. In other embodiments, the multiple first spring contacts 211 may also be arranged at non-uniform intervals around the circumference of the first connecting ring 22. Similarly, the multiple second spring contacts 231 may also be arranged at non-uniform intervals around the circumference of the first connecting ring 22.

[0036] In this embodiment, the connecting part 10 is used to realize the electrical connection between the connector terminal 100 and the wire. The connecting part 10 includes a body 11, a cover plate 12, and a connector 13. The body 11 is cylindrical, and one end of the body 11 along the X-axis is fixedly connected to a plurality of first spring pieces 211. The inner cavity of the body 11 communicates with the insertion hole 25. In this embodiment, the body 11 and the contact part 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 circumference of the body 11. When the connector terminal 100 is installed in the glue core, the positioning boss 111 is positioned with the glue core. The cover plate 12 is disposed on the inner peripheral surface of the body 11 at the end away from the first spring pieces 211. The outer peripheral surface of the cover plate 12 fits against the inner peripheral surface of the body 11 to seal the inner cavity of the body 11, so that the connector terminal 100 will not leak glue into the contact part 20 when dispensing or wrapping glue.

[0037] One end of the connector 13 along the X-axis is fixedly connected to the end of the body 11 opposite to the first spring piece 211. In this embodiment, the connector 13 is arc-shaped, coaxial with the body 11, and its outer peripheral surface is flush with the outer peripheral surface of the body 11. Optionally, the inner peripheral surface of the connector 13 is provided with a plurality of protrusions 131, each protrusion 131 extending circumferentially along the connector 13, and the plurality of protrusions 131 are spaced apart along the X-axis. When the connector 13 is welded and fixed to the wire, the protrusions 131 on the connector 13 can increase the connection force between the connector 13 and the wire. In other embodiments, the inner peripheral surface of the connector 13 may also be provided with a plurality of grooves, each groove extending circumferentially along the connector 13, and the plurality of grooves are spaced apart along the X-axis.

[0038] like Figure 2 As shown, in another embodiment, the connector 13 of the connector terminal 100 is configured as a crimping pin 132, and the wire is fixedly connected to the crimping pin 132 by a crimping process, so that the wire is fixedly connected to the connecting portion 10. In other embodiments, the connecting portion 10 may be configured as a crimping cylinder, and the wire is fixedly connected to the crimping cylinder by a crimping process.

[0039] like Figure 3 As shown, in another embodiment, the connector 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 connector 10 by processes such as ultrasonic welding.

[0040] Continue to refer to Figure 1 In this embodiment, a plurality of first spring pieces 211 are arranged in a spiral around the first connecting ring 22 in a circumferential direction, such 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, which can be the inner diameter of the middle part of the first contact ring 21, or the inner diameter that is close to or far from the middle part of the first contact ring 21.

[0041] Multiple second spring pieces 231 are arranged in a spiral around the first connecting ring 22, such 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, which can be the inner diameter at the center of the second contact ring 23, or it can be the inner diameter near or far from the center of the second contact ring 23. Understandably, the first contact ring 21 and the second contact ring 23 are torsion springs.

[0042] Optionally, the outer circumferential surface of the first connecting ring 22 is provided with a plurality of positioning holes 221. The positioning holes 221 are circular holes. In other embodiments, the positioning holes 221 can also be rectangular holes, which provide better positioning. Each positioning hole 221 communicates with the inner cavity of the first connecting ring 22, and the 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. The end face of the second connecting ring 24 opposite to the second spring piece 231 is provided with a plurality of positioning grooves 241, which penetrate the inner and outer circumferential surfaces of the second connecting ring 24. The plurality of positioning grooves 241 are arranged at intervals around the circumference of the second connecting ring 24.

[0043] During the processing of the connector terminal 100 in this embodiment, the connecting part 10 is first stabilized, and then the second connecting ring 24 is clamped using a torsion tool (servo motor or mechanical transmission mechanism). That is, the torsion tool is positioned in the positioning groove 241. Then the torsion tool drives the second connecting ring 24 to rotate, and the second connecting ring 24 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.

[0044] If the first twisting attempt fails to achieve the desired effect, a second twisting can be performed. During the second twist, two twisting tools are used to clamp the first connecting ring 22 and the second connecting ring 24 respectively. When the twisting tool clamps the first connecting ring 22, its clamping fixture is positioned in the positioning hole 221 of the first connecting ring 22. When the twisting tool clamps the second connecting ring 24, its clamping fixture is positioned in the positioning groove 241 of the second connecting ring 24. This increases the clamping force between the twisting tool and the first connecting ring 22, and 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.

[0045] By controlling the torsion angle of the torsion tool, different throat diameters can be obtained, with the torsion angle ranging from 10° to 80°. The torsion angle is set relatively smaller for terminals with larger diameters, and relatively larger for terminals with smaller diameters.

[0046] 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 terminal to be mated. The larger the torsion angle, the greater the clamping force. A larger clamping force allows the first contact ring 21 and the second contact ring 23 to have better contact with the terminal to be mated, thereby achieving a lower contact resistance.

[0047] When the connector terminal 100 is inserted into the terminal to be paired, the terminal to be paired is inserted into the insertion hole 25. The terminal to be paired abuts against a plurality of first spring pieces 211 and a plurality of second spring pieces 231 respectively. The plurality of first spring pieces 211 and a plurality of second spring pieces 231 undergo elastic deformation and elastically abut against the terminal to be paired, so that the connector terminal 100 and the terminal to be paired are stably inserted.

[0048] In this embodiment, by setting the first contact ring 21 and the second contact ring 23 as a spiral structure, when the terminal to be mated is inserted into the connector terminal 100, the clamping force of the first contact ring 21 and the second contact ring 23 on the terminal to be mated is relatively large, which is beneficial to improving the stability of the insertion between the connector terminal 100 and the terminal to be mated. Furthermore, the magnitude of the clamping force of the first contact ring 21 and the second contact ring 23 on the terminal to be mated can be adjusted by a torsion tool, and the manufacturer can set the clamping force of the connector terminal 100 in advance according to the requirements.

[0049] Please refer to Figure 4 The structure of the connector terminal 100 provided in the second embodiment of this application is similar to that of the connector terminal 100 provided in the first embodiment of this 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 that of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0050] In the second embodiment, the middle portions of multiple first spring pieces 211 are bent into the insertion hole 25, such that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connecting ring 22; similarly, the middle portions of multiple second spring pieces 231 are bent into the insertion hole 25, such 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. Understandably, both the first contact ring 21 and the second contact ring 23 are crown springs.

[0051] When the connector terminal 100 is inserted into the terminal to be paired, the terminal to be paired is inserted into the insertion hole 25. The terminal to be paired abuts against the middle of the plurality of first springs 211 and the middle of the plurality of second springs 231 respectively. The plurality of first springs 211 and the plurality of second springs 231 undergo elastic deformation, and the middle of the plurality of first springs 211 and the middle of the plurality of second springs 231 elastically abuts against the terminal to be paired.

[0052] In this embodiment, the connector terminal 100 is formed by die stamping and rolling, which has a simple structure, high stamping efficiency, and does not require servo motors or other twisting tools during the processing of the connector terminal 100, resulting in low processing costs.

[0053] Please refer to Figure 5The structure of the connector terminal 100 provided in the third embodiment of this application is similar to that of the connector terminal 100 provided in the first embodiment of this 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 that of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0054] In the third embodiment, the middle portions of multiple first spring pieces 211 are all bent into the insertion hole 25, such that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connecting ring 22. Multiple second spring pieces 231 are arranged in a spiral around the first connecting ring 22, such that the throat diameter of the second contact ring 23 is smaller than the inner diameter of both the first connecting ring 22 and the second connecting ring 24. Understandably, 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.

[0055] In this embodiment, by setting the first contact ring 21 as a crown spring, the first contact ring 21 is easy to process, and by setting the second contact ring 23 as a torsion spring, the second contact ring 23 can provide a higher clamping force.

[0056] Please refer to Figure 6 The structure of the connector terminal 100 provided in the fourth embodiment of this application is similar to that of the connector terminal 100 provided in the first embodiment of this 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 that of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0057] In the fourth embodiment, the second connecting ring 24 is omitted. 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 connected to form a plug hole 25. The middle parts of the plurality of first spring pieces 211 are all bent into 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. Understandably, the first contact ring 21 is a crown spring.

[0058] The second contact ring 23 includes a mating ring 23a and a guide ring 23b; each second spring piece 231 includes a first segment 231a and a second segment 231b, with one end of each of the first segments 231a fixedly connected to the end of the first connecting ring 22 away from the first spring piece 211. One end of each of the second segments 231b is fixedly connected to the end of each of the first segments 231a away from the first connecting ring 22, corresponding to each other. The first segments 231a are arranged in a circumferentially spaced circle around the first connecting ring 22 to form a mating ring 23a. The ends of the first segments 231a away from the first connecting ring 22 are inclined inwards towards 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 towards the first segment 231a. Multiple second segments 231b are arranged in a circumferentially spaced ring around the first connecting ring 22 to form a guide ring 23b. The ends of the multiple second segments 231b away from the first segment 231a expand in the direction away from the insertion hole 25, so that the inner diameter of the guide ring 23b gradually increases along the direction from the first connecting ring 22 to the first segment 231a.

[0059] In this embodiment, when the connector terminal 100 is inserted into the terminal to be mated, the terminal to be mated 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 terminal to be mated, facilitating insertion. The ends of the plurality of first segments 231a of the mating ring 23a away from the first connecting ring 22 abut against the terminal to be mated. Understandably, the contact point between the second contact ring 23 and the terminal to be mated is closer to the end of the connector terminal 100, and the second contact ring 23 has a greater clamping force on the terminal to be mated, which helps improve the stability of the insertion between the terminal to be mated and the connector terminal 100. Furthermore, in this embodiment, the second connecting ring 24 is omitted from the connector terminal 100, and the size of the connector terminal 100 along the X-axis is reduced, which is beneficial for miniaturization design.

[0060] Please refer to Figure 7 The structure of the connector terminal 100 provided in the fifth embodiment of this application is similar to that of the connector terminal 100 provided in the fourth embodiment of this application. The main difference is that the structure of the contact portion 20 of the connector terminal 100 in the fifth embodiment is different from that of the contact portion 20 of the connector terminal 100 in the fourth embodiment.

[0061] 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, while 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 spring pieces 211 of the first contact ring 21 are arranged in a spiral around the first connecting ring 22 in a circumferential direction, such 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.

[0062] The beneficial effects of the connector terminal 100 in the fifth embodiment of this application are the same as those of the connector terminal 100 in the fourth embodiment, and will not be repeated here.

[0063] Please refer to Figure 8 The structure of the connector terminal 100 provided in the sixth embodiment of this application is similar to that of the connector terminal 100 provided in the first embodiment of this application. The main difference is that the structure of the contact portion 20 of the connector terminal 100 in the sixth embodiment is different from that of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0064] In the sixth embodiment, the second connecting ring 24 is omitted from the contact portion 20, and a guide ring 26 is provided in the contact portion 20. The inner diameter of the guide ring 26 gradually increases along the direction from the first connecting ring 22 to the second spring piece 231, and the inner diameter of the end of the guide ring 26 facing the first connecting ring 22 is smaller than the inner diameter of the first connecting ring 22. The ends of the plurality of second spring pieces 231 away from the first connecting ring 22 are all fixedly connected to the guide ring 26. The inner cavity of the guide 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 connected to form a insertion hole 25. The ends of the plurality of second spring pieces 231 away from the first connecting ring 22 are all inclined towards the insertion hole 25, so that the inner diameter of the second contact ring 23 gradually decreases along the direction from the first connecting ring 22 to the second spring piece 231. The plurality of first spring pieces 211 are arranged in a spiral around the first connecting ring 22 in a circle, so that the throat diameter of the first contact ring 21 is smaller than the inner diameter of the first connecting ring 22.

[0065] In this embodiment, when the connector terminal 100 is inserted into the terminal to be mated, the terminal to be mated is sequentially inserted into the inner cavity of the guide 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 guide ring 26 guides the terminal to be mated, facilitating insertion. Furthermore, the ends of the multiple second spring pieces 231 furthest from the first connecting ring 22 are all fixedly connected to the guide ring 26, which protects the multiple second spring pieces 231 and helps improve the lifespan of the connector terminal 100. In addition, the ends of the multiple second spring pieces 231 furthest from the first connecting ring 22 are all inclined towards the insertion hole 25. When the terminal to be mated is inserted into the connector terminal 100, the clamping force of the multiple second spring pieces 231 is greater, thereby improving the stability of the insertion between the connector terminal 100 and the terminal to be mated.

[0066] Please refer to Figure 9 , Figure 10 and Figure 11The structure of the connector terminal 100 provided in the seventh embodiment of this application is similar to that of the connector terminal 100 provided in the sixth embodiment of this 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 that of the contact portion 20 of the connector terminal 100 in the sixth embodiment.

[0067] In the seventh embodiment, the structure of the second contact ring 23 differs from that in the sixth embodiment. The ends of the plurality of second spring pieces 231 of the second contact ring 23 that are away from the first connecting ring 22 are all inclined towards the insertion hole 25, and the plurality of second spring pieces 231 are arranged in a spiral around 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 spring pieces 231. The inner diameter of the guide ring 26 first decreases and then increases along the direction from the first connecting ring 22 to the second spring pieces 231. The throat diameter (minimum inner diameter of the guide ring 26) of the guide ring 26 is equal to the throat diameter (minimum inner diameter of the first contact ring 21) and the throat diameter (minimum inner diameter of the second contact ring 23).

[0068] In other embodiments, the diameter of the connector terminal 100 can be unequal at the 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 guide ring 26 is slightly larger than the throat diameter of the second contact ring 23. The throat diameter of the first contact ring 21 is not related to the throat diameters of the guide ring 26 and the second contact ring 23; the throat diameter of the first contact ring 21 can be smaller or larger than the throat diameters of the guide ring 26 and the second contact ring 23.

[0069] In this embodiment, when the terminal to be mated 200 is inserted into the connector terminal 100, the terminal to be mated 200 is first inserted into the entrance of the guide ring 26. At this time, the throat diameters of the guide 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 larger than the throat diameters of the guide 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 guide 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 guide ring 26, the second contact ring 23, and the first contact ring 21 all gradually increase. The first spring piece 211 of the first contact ring 21 and the second spring piece 231 of the second contact ring 23 undergo elastic deformation along the radial direction of the connector terminal 100.

[0070] After the terminal to be mated 200 is fully inserted, the reaction forces of the first spring 211 and the second spring 231 with the terminal to be mated 200 are balanced. At this time, the throat diameters of the guide ring 26, the second contact ring 23, and the first contact ring 21 are all stable at their expanded dimensions. The first spring 211, the second spring 231, and the guide ring 26 all generate compressive force on the terminal to be mated 200 to ensure tight contact between the terminal to be mated 200 and the connector terminal 100.

[0071] In this embodiment, when the terminal to be paired 200 is inserted into the connector terminal 100, the guide ring 26, the first spring 211 and the second spring 231 are all in close contact with the terminal to be paired 200, and the contact area between the terminal to be paired 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 paired 200 and the connector terminal 100.

[0072] Please refer to Figure 12 and Figure 13 The structure of the connector terminal 100 provided in the eighth embodiment of this application is similar to that of the connector terminal 100 provided in the first embodiment of this 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 that of the first contact ring 21 of the contact portion 20 of the connector terminal 100 in the first embodiment.

[0073] In the eighth embodiment, the first contact ring 21 includes a main body 212 and a plurality of cantilever 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 part 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 communicate to form a plug hole 25. A plurality of fixing holes 2121 are provided on the outer peripheral surface of the main body 212. The plurality of fixing holes 2121 communicate with the inner cavity of the main body 212, and the plurality of fixing holes 2121 are arranged in a circle around the circumference of the first connecting ring 22.

[0074] One end of each cantilever 213 is connected to the main body 212, and the other end of each cantilever 213 is located inside the insertion hole 25. The multiple cantilever 213 are arranged in a circle around the first connecting ring 22 at intervals, and the throat diameter formed by the multiple cantilever 213 is smaller than the inner diameter of the first connecting ring 22 and the inner diameter of the second connecting ring 24.

[0075] Specifically, each cantilever 213 includes a fixedly connected connecting section 2131 and a mating section 2132. One end of the connecting section 2131 of the multiple cantilever 213 is fixedly connected to the wall of the multiple fixing holes 2121, and the other end of the connecting section 2131 of the multiple cantilever 213 extends towards the first connecting ring 22 and tilts inward toward the insertion hole 25. One end of the multiple mating sections 2132 is fixedly connected to one end of the multiple connecting section 2131, and the other end of the multiple mating sections 2132 is raised outward toward the insertion hole 25. The angle A between the raised mating section 2132 and the horizontal direction is 10°-30°. The inner diameter of the first contact ring 21 first decreases and then increases along the direction from the first connecting ring 22 toward the second spring piece 231. The throat diameter of the first contact ring 21 is smaller than the diameter of the terminal to be mated 200. Generally, the throat diameter of the first contact ring 21 is 0.1mm-0.3mm smaller than the diameter of the terminal to be mated 200.

[0076] When the terminal to be mated 200 is inserted into the connector terminal 100, the terminal to be mated 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 terminal to be mated 200 abuts against multiple second spring pieces 231 and multiple cantilever arms 213 respectively. The multiple second spring pieces 231 and multiple cantilever arms 213 all undergo elastic deformation along the radial direction of the connector terminal 100, and the multiple second spring pieces 231 and multiple cantilever arms 213 all generate elastic force and act on the terminal to be mated 200, thereby improving the current carrying capacity of the connector terminal 100 and the stability of the insertion between the connector terminal 100 and the terminal to be mated 200. Figure 1 and Figure 14 As shown, this application also provides a method for manufacturing a connector terminal 100, comprising 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, wherein the row of first through slots 15 is spaced apart from the row of second through slots 16, and the row of first through slots 15 is closer to the center of the metal sheet than the row of second through slots 16. A main board 14 is formed on the side of the metal sheet opposite to the second through slots 16 of the first through slots 15.

[0077] The metal sheet is rolled into a circle so that a row of first through grooves 15 forms a first contact ring 21, a row of second through grooves 16 forms a second contact ring 23, and a main board 14 forms a connecting part 10. A first connecting ring 22 is formed in the circle between the row of first through grooves 15 and the row of second through grooves 16. A second connecting ring 24 is formed in the circle of the metal sheet on the side of the plurality of second spring pieces 231 opposite to the first connecting ring 22.

[0078] Specifically, the motherboard 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. 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 along its thickness direction. During the rolling process, the body plate 141 forms a ring around the body 11 of the connecting portion 10, and the connecting plate 144 is arc-shaped. The flattening protrusion 145 forms a ring-shaped positioning boss 111. After the rolling process is completed, the first sub-plate 142 and the second sub-plate 143 need to be bent. The bent first sub-plate 142 and the second sub-plate 143 form the cover plate 12 of the connecting portion 10, and the cover plate 12 closes the inner cavity of the body 11.

[0079] Both the first through groove 15 and the second through groove 16 are strip-shaped grooves. Multiple first through grooves 15 are parallel and spaced apart, and a first spring piece 211 is formed between two adjacent first through grooves 15. Multiple second through grooves 16 are parallel and spaced apart, and a second spring piece 231 is formed between two adjacent second through grooves 16.

[0080] After the rolling process is completed, the first contact ring 21 and the second contact ring 23 are twisted so that the multiple first spring pieces 211 are spirally arranged and the multiple second spring pieces 231 are spirally arranged. Specifically, the connecting part 10 is first stabilized, and then the second connecting ring 24 is clamped using a twisting tool (servo motor or mechanical transmission mechanism). 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.

[0081] like Figure 4 and Figure 14 As shown, the manufacturing method of the connector terminal 100 in the second embodiment is similar to that in the first embodiment. The main difference is that after the metal sheet is stamped, the first spring piece 211 and the second spring piece 231 are both arc-shaped. After the rolling process is completed, the multiple first spring pieces 211 are bent toward the inner cavity of the first contact ring 21, and the multiple second spring pieces 231 are bent toward the inner cavity of the second contact ring 23.

[0082] like Figure 5 and Figure 14As shown, the manufacturing method of the connector terminal 100 in the third embodiment is similar to that in the first embodiment, with the main difference being that: after the metal sheet is stamped, the first spring piece 211 is arc-shaped; after the rolling process is completed, multiple first spring pieces 211 are bent towards the inner cavity of the first contact ring 21. After the rolling process is completed, the second contact ring 23 needs to be twisted so that multiple second spring pieces 231 are spirally arranged. Specifically, two twisting tools are used to clamp the first connecting ring 22 and the second connecting ring 24 respectively, and then the two twisting tools are rotated in opposite directions, or one of the first connecting ring 22 and the second connecting ring 24 is stabilized first, and then the other of the first connecting ring 22 and the second connecting ring 24 is twisted using a twisting tool.

[0083] like Figure 6 and Figure 15 As shown, the manufacturing method of the connector terminal 100 in the fourth embodiment is similar to that in the first embodiment, with the main difference being that the second connecting ring 24 is omitted in the fourth embodiment. Furthermore, after stamping the metal sheet, the first spring 211 is arc-shaped, multiple second springs 231 are inclined along a first direction, and the ends of the multiple second springs 231 away from the first spring 211 are bent along a second direction. The first direction is the thickness direction of the metal sheet before the rolling process, and the second direction is opposite to the first direction. For example, if the first direction is perpendicular to the front side of the metal sheet, then the second direction is perpendicular to the back side of the metal sheet; conversely, if the first direction is perpendicular to the back side of the metal sheet, then the second direction is perpendicular to the front side of the metal sheet.

[0084] After the rolling process is completed, multiple first spring pieces 211 are bent toward the inner cavity of the first contact ring 21, multiple second spring pieces 231 are tilted toward the inner cavity of the second contact ring 23, and the ends of multiple second spring pieces 231 away from the first spring pieces 211 are bent toward the direction away from the inner cavity of the second contact ring 23.

[0085] like Figure 7 and Figure 15As shown, the manufacturing method of the connector terminal 100 in the fifth embodiment is similar to that in the first embodiment, with the main difference being that the second connecting ring 24 is omitted in the fifth embodiment. Furthermore, after the metal sheet is stamped, multiple second spring pieces 231 are inclined along a first direction, and the ends of the multiple second spring pieces 231 away from the first spring piece 211 are bent along a second direction. The first direction is the thickness direction of the metal sheet before the rolling process, and the second direction is opposite to the first direction. After the rolling process is completed, the multiple second spring pieces 231 are inclined towards the inner cavity of the second contact ring 23, and the ends of the multiple second spring pieces 231 away from the first spring piece 211 are all bent away from the inner cavity of the second contact ring 23. After the rolling process is completed, the first contact ring 21 needs to be twisted so that the multiple first spring pieces 211 are spirally arranged. Specifically, the connecting part 10 is first stabilized, and then a twisting tool is used to clamp the first connecting ring 22. The twisting tool drives the first connecting ring 22 to rotate, and the first connecting ring 22 drives the first contact ring 21 to rotate. If the torsional force is insufficient, a positioning hole can be set in the first connecting ring 22. The torsion tool can be positioned with the positioning hole before torsion.

[0086] like Figure 8 and Figure 16 As shown, the manufacturing method of the connector terminal 100 in the sixth embodiment is similar to that in the first embodiment, with the main difference being that: a guide plate 17 is formed on the side of the plurality of second spring pieces 231 facing away from the first spring piece 211; after the metal sheet is stamped, the plurality of second spring pieces 231 are inclined in a first direction, and the end of the guide plate 17 away from the second spring pieces 231 is bent in a second direction. The first direction is the thickness direction of the metal sheet before the rolling process, and the second direction is opposite to the first direction. After the rolling process is completed, the plurality of second spring pieces 231 are inclined towards the inner cavity of the second contact ring 23, and the guide plate 17 forms a guide ring 26. The inner diameter of the guide ring 26 gradually increases along the direction from the first connecting ring 22 to the second spring piece 231. After the rolling process is completed, the first contact ring 21 needs to be twisted so that the plurality of first spring pieces 211 are spirally arranged.

[0087] like Figure 9 and Figure 16 As shown, the manufacturing method of the connector terminal 100 in the seventh embodiment is similar to that in the sixth embodiment. The main difference is that after the rolling process is completed, the first contact ring 21 and the second contact ring 23 need to be twisted so that the multiple first spring pieces 211 are spirally arranged and the multiple second spring pieces 231 are spirally arranged.

[0088] like Figure 12 and Figure 17As shown, the manufacturing method of the connector terminal 100 in the eighth embodiment is similar to that in the first embodiment, with the main difference being that the first through groove 15 is a U-shaped groove, and a cantilever 213 is provided within the first through groove 15. After the metal sheet is stamped, the cantilever 213 tilts in a first direction, and the end of the cantilever 213 near the second spring piece 231 bends in a second direction. The first direction is the thickness direction of the metal sheet before the rolling process, and the second direction is opposite to the first direction. After the rolling process is completed, the cantilever 213 tilts towards the inner cavity of the first contact ring 21, and the end of the cantilever 213 near the second spring piece 231 bends away from the inner cavity of the first contact ring 21.

[0089] The embodiments of this application have been described in detail above. Specific examples have been used in this article to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application.

Claims

1. A connector terminal, characterized in that, The connector terminals include: The connecting part includes a body, the outer peripheral surface of which is provided with a positioning boss; 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 body, 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, characterized in that, The first contact ring includes a plurality of first spring pieces, one end of each of the plurality of first spring pieces is connected to the first connecting ring, the plurality of first spring pieces are arranged in a circle around the first connecting ring at intervals, and the ends of the plurality of first spring pieces facing away from the first connecting ring are connected to the connecting portion; the second contact ring includes a plurality of second spring pieces, one end of each of the plurality of second spring pieces is connected to the first connecting ring, and the plurality of second spring pieces are arranged in a circle around the first connecting ring at intervals.

3. The connector terminal according to claim 2, characterized in that, The contact portion further includes a second connecting ring, and the ends of the plurality of second spring 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 a plug hole; Multiple first spring contacts are arranged in a spiral around the first connecting ring, such that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; multiple second spring contacts are arranged in a spiral around the first connecting ring, such that the throat diameter of the second contact ring is smaller than both the inner diameter of the first and second connecting rings.

4. The connector terminal according to claim 3, characterized in that, The outer peripheral surface of the first connecting ring is provided with a plurality of positioning holes, which are arranged at intervals around the circumference of the first connecting ring; And / or the end face of the second connecting ring opposite to the second spring is provided with a plurality of positioning grooves, the plurality of positioning grooves being arranged circumferentially around the second connecting ring at intervals.

5. The connector terminal according to claim 2, characterized in that, The contact portion further includes a second connecting ring, and the ends of the plurality of second spring 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 a plug hole; Multiple first spring contacts are bent into the insertion hole, such that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; multiple second spring contacts are bent into the insertion hole, such that the throat diameter of the second contact ring is smaller than the inner diameter of both the first and second connecting rings.

6. The connector terminal according to claim 2, characterized in that, The contact portion further includes a second connecting ring, and the ends of the plurality of second spring 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 a plug hole; Multiple first spring contacts are bent into the insertion hole, such that the throat diameter of the first contact ring is smaller than the inner diameter of the first connecting ring; multiple second spring contacts are spirally arranged around the circumference of the first connecting ring, such that the throat diameter of the second contact ring is smaller than both the inner diameter of the first and second connecting rings.

7. The connector terminal according to claim 2, characterized in that, 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; a plurality of the first spring pieces are bent into the plug hole, such 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 mating ring; each second spring includes a first segment and a second segment, one end of each of the first segments is connected to the end of the first connecting ring opposite to the first spring; one end of each of the second segments is connected to the end of each of the first segments opposite to the first connecting ring. A plurality of first segments are arranged circumferentially around a first connecting ring to form a mating ring, the inner diameter of which gradually decreases along the direction from the first connecting ring to the first segment; a plurality of second segments are arranged circumferentially around the first connecting ring to form a guide ring, the inner diameter of which gradually increases along the direction from the first connecting ring to the first segment.

8. The connector terminal according to claim 2, characterized in that, Multiple first spring pieces are arranged in a spiral around the first connecting ring in a circumferential direction, such 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 mating ring; each second spring includes a first segment and a second segment, one end of each of the first segments is connected to the end of the first connecting ring opposite to the first spring; one end of each of the second segments is connected to the end of each of the first segments opposite to the first connecting ring. A plurality of first segments are arranged circumferentially around a first connecting ring to form a mating ring, the inner diameter of which gradually decreases along the direction from the first connecting ring to the first segment; a plurality of second segments are arranged circumferentially around the first connecting ring to form a guide ring, the inner diameter of which gradually increases along the direction from the first connecting ring to the first segment.

9. The connector terminal according to claim 2, characterized in that, The contact portion further includes a guide ring, and the ends of the plurality of second spring 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 contacts are arranged in a spiral around the first connecting ring, such 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 contacts away from the first connecting ring are all inclined toward the insertion hole, such that the inner diameter of the second contact ring gradually decreases along the direction from the first connecting ring to the second spring contact; the inner diameter of the guide ring gradually increases along the direction from the first connecting ring to the second spring contact.

10. The connector terminal according to claim 2, characterized in that, The contact portion further includes a guide ring, and the ends of the plurality of second spring 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 contacts are arranged in a spiral around the first connecting ring, such 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 contacts away from the first connecting ring are all inclined toward the insertion hole, and the multiple second spring contacts are arranged in a spiral around the first connecting ring, and the inner diameter of the guide ring gradually increases along the direction from the first connecting ring to the second spring contacts.

11. The connector terminal according to claim 10, characterized in that, The throat diameter of the guide 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 cantilever arms. One end of the main body is connected to one end of the first connecting ring, and the end of the main body facing 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 connected to form a insertion hole. One end of the plurality of cantilever arms is connected to the main body, and the other end of the plurality of cantilever arms is located in the insertion hole. The plurality of cantilever arms are arranged in a circle around the circumference of the first connecting ring at intervals. The throat diameter formed by the plurality of cantilever arms 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 spring pieces, one end of each of the plurality of second spring pieces is connected to the first connecting ring, and the ends of the plurality of second spring pieces away from the first connecting ring are connected to the second connecting ring. The plurality of second spring pieces are arranged in a spiral around the first connecting ring, such 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 connector, characterized in that, The connector includes a core, wherein the core contains a connector terminal as described in any one of claims 1 to 12.

Images