Highly reliable, adaptable, high-current capacity electrical connectors

Abstract

A high-current capacity electrical connector is disclosed. The connector comprises a sleeve and terminals disposed therein. Each terminal includes one or more conductive elements, each having a first portion having an inflection point that contacts the sleeve and a second portion connecting adjacent first portions. When a pin is inserted into the terminal, the second portions are radially expanded by the pin. The expansion of the second portions increases the contact area and contact force between the first portions and the sleeve, ensuring a secure connection of the pin to the sleeve via the second portions to the first portions. The number of first portions of each conductive element can be configured to achieve a desired contact area and contact force. The terminal may include multiple conductive elements, the number of which can be selected according to the length of the pin. The technology described herein enables a reliable and adaptable high-current capacity connector.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the priority and benefit of Chinese Patent Application No. 202310517646.6, filed on May 9, 2023, the content of which is incorporated herein by reference in its entirety.

[0002] This application generally relates to interconnection systems, such as those including electrical connectors used to interconnect electronic assemblies.

Background Art

[0003] Electrical connectors are essential elements for realizing electrical connections and signal transmissions between devices, assemblies, and systems and for forming a complete system.

[0004] Existing electrical connectors may have a side configured to receive pins. When a pin is inserted into a socket, the pin may contact the inside of the socket such that the pin is electrically connected to the socket via an elastic sheet. An example of a connector that receives pins is shown in U.S. Patent No. 11,929,571, and the assignee of this patent sells a connector called a RADSOK connector.

Summary of the Invention

[0005] Aspects of the present disclosure relate to highly reliable and adaptable high - current - capacity electrical connectors.

[0006] Some embodiments relate to terminals. The terminals may include one or more conductive elements that at least partially surround a region having a center, and each of the one or more conductive elements includes at least two first portions that are each offset from the center by more than a first radius, and a plurality of second portions that connect adjacent first portions of the at least two first portions and are offset from the center by less than the first radius.

[0007] Optionally, each of the one or more conductive elements is configured to expand and contract radially relative to the center of the region.

[0008] Optionally, one or more conductive elements include two conductive elements stacked axially, perpendicular to the radial direction with respect to the center of the region.

[0009] Optionally, the terminal includes a component that connects two conductive elements.

[0010] Optionally, the member is placed between two conductive elements and joins the first portion of the two conductive elements.

[0011] Optionally, each of one or more conductive elements comprises a first end and a second end separated from each other.

[0012] Optionally, for each of one or more conductive elements, the first end and the second end are positioned in at least one of two first parts.

[0013] Optionally, at least one of the one or more conductive elements comprises one or more projections extending from the edge of at least one conductive element and positioned between each adjacent first portion of at least one conductive element, wherein the one or more projections are angled away from the center.

[0014] Optionally, each of one or more conductive elements includes three to six first parts.

[0015] Optionally, one or more conductive elements are punched out from a metal sheet.

[0016] Optionally, the sheet thickness defines the radial range of each of one or more conductive elements.

[0017] Optionally, the surface of the sheet defines the surface of one or more conductive elements facing the region.

[0018] Optionally, each of the plurality of second portions comprises an elongate band.

[0019] Optionally, the elongate bands of the one or more conductive elements are arranged in parallel.

[0020] Optionally, each of the at least two first portions comprises a bend.

[0021] Some embodiments relate to an electrical connector. The electrical connector may comprise a sleeve having an inner wall bounding a cavity, and a terminal disposed within the cavity and including a conductive element, the conductive element comprising a first portion abutting the inner wall of the sleeve and a second portion disposed within the cavity and connecting adjacent first portions.

[0022] Optionally, each of the first portions comprises an inflection point abutting the inner wall of the sleeve.

[0023] Optionally, the electrical connector comprises a plurality of gaps between the portion of the terminal and the inner wall of the sleeve, the gaps being separated from each other by the inflection points of the respective first portions of the terminal abutting the inner wall of the sleeve.

[0024] Optionally, each of the plurality of gaps decreases towards the point of the respective first portion.

[0025] Optionally, each of the plurality of gaps is symmetric.

[0026] Optionally, the plurality of gaps conform to a wave.

[0027] Optionally, the conductive element comprises a first end and a second end distinct from the first end, the first end and the second end being disposed in the first portion.

[0028] Optionally, the terminal comprises a plurality of conductive elements including the conductive element, the plurality of conductive elements being axially stacked through the cavity of the sleeve.

[0029] Optionally, the electrical connector includes a plurality of members that join first portions of adjacent ones of the plurality of conductive elements.

[0030] Optionally, the electrical connector includes a plurality of protrusions that extend from edges of second portions of the plurality of conductive elements and are angled away from the center of the cavity.

[0031] Some embodiments relate to a terminal that fits onto a pin. The terminal may include one or more conductive elements that at least partially surround the pin, each of the one or more conductive elements including at least two first portions and a plurality of second portions, each of the plurality of second portions contacting the surface of the pin at a first radius from the center of the pin, and the at least two first portions connecting adjacent ones of the plurality of second portions and being offset from the center of the pin by more than the first radius.

[0032] Optionally, the one or more conductive elements are punched from a metal sheet.

[0033] Optionally, the thickness of the sheet defines the radial extent of each of the one or more conductive elements.

[0034] Optionally, the surface of the sheet defines the surface of the one or more conductive elements facing the center.

[0035] Optionally, each of the plurality of second portions includes an elongate band.

[0036] Optionally, the elongate bands of the one or more conductive elements are arranged in parallel.

[0037] Optionally, each of the at least two first portions includes a bend.

[0038] Optionally, each of the one or more conductive elements includes one or more protrusions that extend from an edge of the second portion of the conductive element.

[0039] Some embodiments relate to a method for operating an electrical connector, the electrical connector comprising a sleeve having a cavity and a terminal disposed within the cavity. The method may include inserting a pin into the terminal, expanding the terminal, and generating pressure on the circumferential surface of the pin.

[0040] Optionally, the method includes generating pressure against the inner wall of the sleeve.

[0041] Optionally, the terminal comprises one or more conductive elements that at least partially surround a region having a center, each of which comprises at least two first portions offset from the center by a first radius and a plurality of second portions that connect adjacent first portions of the at least two first portions and are offset from the center by a first radius.

[0042] Optionally, extending the terminal includes extending at least two first portions such that the contact area between at least two first portions and the inner wall of the sleeve is increased, and extending a plurality of second portions such that the plurality of second portions conform to the circumferential surface of the pin.

[0043] Optionally, each of one or more conductive elements comprises a first end located in the first of at least two first parts, and a second end located in the first of at least two first parts and separated from the first end, wherein extending the terminals includes further increasing the distance between the first end and the second end.

[0044] Optionally, each of one or more conductive elements comprises a plurality of projections extending from the edges of a plurality of second parts of the conductive element and angled away from the center, and extending the terminals includes, for each of the one or more conductive elements, bringing the plurality of projections into contact with a pin, thereby guiding the pin to contact the plurality of second parts of the conductive element.

[0045] Some embodiments relate to a corrugated spring. The corrugated spring may comprise a plurality of spring plates, which are arranged in a ring, and which are sequentially connected and stacked in the axial direction, with each spring plate having at least three contact points, which are distributed around the outside of each spring plate, and which are configured to expand and contract radially around each spring plate.

[0046] Optionally, each spring plate is provided with a first end and a second end, the first end and the second end being configured to abut each other and cooperate to define an opening.

[0047] Optionally, the opening is located in one of at least three contact points.

[0048] Optionally, adjacent spring plates among multiple spring plates are connected via a connecting sheet.

[0049] Optionally, each of the multiple spring plates further comprises multiple connection points, the ends of each connection point being connected to adjacent contact points among at least three contact points, and a connecting sheet is located on one side of each contact point or on one side of each connection point, and the connecting sheet is configured to connect the contact points of two adjacent spring plates.

[0050] Optionally, each of the multiple spring plates may be further provided with a guide portion on one side, the guide portion being located between adjacent contact portions of at least three contact portions.

[0051] Optionally, at least three contact points include three to six contact points.

[0052] Some embodiments relate to plug terminal connectors. The plug terminal connector may include a corrugated spring as described herein. The plug terminal connector may further include a sleeve, in which an annular housing cavity is disposed, a corrugated spring is disposed in the housing cavity, and a contact portion abuts against the cavity wall of the housing cavity, and a contact pin that can be inserted into the corrugated spring.

[0053] Optionally, the insertion end of the contact pin has an arcuate surface, and this arcuate surface can be attached to the guide portion of the corrugated spring.

[0054] Optionally, both ends of the corrugated spring in the axial direction are in contact with both ends of the housing cavity.

[0055] Some embodiments relate to a terminal comprising one or more conductive elements, each of which comprises a plurality of first parts, each having an outermost point arranged on a first annular shape, and a plurality of second parts, arranged between adjacent first parts of the plurality of first parts and having endpoints that join the respective first parts, the ends of the plurality of second parts being arranged on a second annular shape.

[0056] Optionally, the first annular shape and the second annular shape are concentric.

[0057] Optionally, each of the one or more conductive elements between adjacent outermost points of multiple first parts is separated from the first annular shape by a gap, the gap decreasing toward each outermost point.

[0058] The gap is symmetrical and chosen at will.

[0059] Optionally, each of the multiple first parts is separated from the second annular shape by a first gap, and each of the multiple second parts is separated from the second annular shape by a second gap different from the first gap.

[0060] Optionally, each of one or more conductive elements comprises a first end located in the first portion and a second end located in the first portion and separated from the first end.

[0061] Some embodiments relate to terminals. The terminals may include a plurality of conductive elements. The conductive elements may be formed in an annular shape. The conductive elements may be connected sequentially in the axial direction and stacked. Each conductive element may comprise at least three first parts. The first parts are distributed around the outside of each conductive element. The first parts can expand and contract radially around each conductive element.

[0062] Optionally, each conductive element is provided with a first end and a second end, the first end and the second end being configured to abut each other and cooperate to define an opening.

[0063] Optionally, the opening is placed in one of the first parts.

[0064] Optionally, adjacent conductive elements among multiple conductive elements are connected via a component.

[0065] Optionally, each conductive element further comprises a plurality of second parts, the ends of each second part being connected to an adjacent first part, and a member is located on one side of each first part or on one side of each second part, and the member is used to connect the first parts of two adjacent conductive elements.

[0066] Optionally, one side of the conductive element may be further provided with a projection located between two adjacent first parts.

[0067] The first part optionally includes three to six first parts.

[0068] Some embodiments relate to electrical connectors. The electrical connector may include terminals as described herein and a sleeve having an annular cavity. The terminals may be positioned within the cavity of the sleeve, with a first portion in contact with the wall of the cavity.

[0069] Optionally, the terminal may be configured to accept a pin.

[0070] Optionally, the insertion end of the pin is provided with an end face, which can be attached to a projection on the terminal.

[0071] Optionally, both ends of the terminal in the axial direction may contact both ends of the cavity.

[0072] These techniques can be used individually or in any suitable combination. The above outline is provided as an example and is not intended to be limiting. [Brief explanation of the drawing]

[0073] The above and / or additional aspects and advantages of this disclosure will become apparent and readily apparent from the description of the embodiments with reference to the following drawings. The accompanying drawings may not be drawn to a constant scale. In the drawings, each of the identical or substantially identical components illustrated in various figures may be represented by similar numbers. For clarity, not all components may be labeled in all drawings. In the drawings, [Figure 1] This is a perspective view of an electrical connector with pins at least partially inserted, according to several embodiments. [Figure 2] Figure 1 is a cross-sectional perspective view of an electrical connector cut vertically. [Figure 3] Figure 1 is a perspective view of the terminals of an electrical connector, showing a terminal having three first parts according to several embodiments. [Figure 4]Figure 1 is a cross-sectional view of an electrical connector, cut horizontally through one of the conductive elements of the terminal (e.g., a band of flexible material) above the tip of the pin, with the exemplary dotted lines dividing the sleeve equally in the radial direction. [Figure 5] Figure 4 is a cross-sectional view of the electrical connector showing the gap between the terminal in Figure 3 and the circumferential surface of the outer wall of the pin shown in Figure 1, with the exemplary dotted line portion within the gap held for reference. [Figure 6] Figure 4 is a cross-sectional view of the electrical connector with the pins hidden, showing the gap between the terminals shown in Figure 3 and the inner wall of the sleeve in Figure 4, with the exemplary dotted line portion within the gap held for reference. [Figure 7] Figure 5 is a schematic diagram showing the gap between the terminal and the circumferential surface of the outer wall of the pin, unfolded into a straight line. This straight line is equally divided, just like the equally divided line segments shown in Figure 5. [Figure 8] Figure 6 is a schematic diagram showing the gap between the terminal and the inner wall of the sleeve unfolded into a straight line, and this straight line is equally divided, just like the equally divided line segments shown in Figure 6. [Figure 9] This is a perspective view of a terminal showing a terminal having four first parts according to several embodiments. [Figure 10] Figure 9 is a schematic diagram showing the gap between the terminal and the circumferential surface of the outer wall of the pin unfolded into a straight line. [Figure 11] Figure 9 is a schematic diagram showing the gap between the terminal and the inner wall of the sleeve unfolded as a straight line. [Figure 12] This is a perspective view of a terminal showing a terminal having five first parts according to several embodiments. [Figure 13] This is a perspective view of a terminal having six first parts according to several embodiments.

[0074] Reference number: 10 may refer to a terminal. 11 may refer to a conductive element. 111 may refer to a first part. 112 may refer to a first end. 113 may refer to a second end. 114 may refer to an opening. 12 may refer to a component. 13 may refer to a projection. 14 may refer to a second part. 20 can refer to the sleeve. 21 can refer to the cavity. 211 can refer to the wall. 30 may refer to a pin. 31 may refer to an end face. 311 may refer to a surface. [Modes for carrying out the invention]

[0075] The inventors recognize and appreciate connector design techniques for producing reliable, compatible, high-current capacity electrical connectors. Such connectors may have lower insertion and extraction forces than existing connectors of similar current capacity. Alternatively or additionally, these techniques may enable connectors that engage with pins at shorter lengths and occupy less volume than existing connectors. Connectors manufactured according to the techniques described herein can be configured to achieve desired contact area and contact force while adapting to the length of the mating pins, thereby simplifying the design and operation of miniature electronic systems while supplying the same or greater current.

[0076] A high-current capacity electrical connector may have a sleeve and terminals disposed therein. The terminals may include one or more conductive elements. Each conductive element may include a first portion having a bend and a second portion having a band connecting adjacent first portions. In some embodiments, the first portions may include an outermost point that contacts the sleeve. In some embodiments, the terminals may be movable within the sleeve to compensate for any misalignment between the sleeve and the mating pin.

[0077] When a pin is inserted into the terminal, the second portion may be expanded radially by the pin. The expansion of the second portion increases the contact area and contact force between the first portion and the sleeve, thereby ensuring a secure connection of the pin to the sleeve via the second portion to the first portion. Each conductive element may be positioned within the first portion and have a first end and a second end separated from each other. Expanding the terminal may involve increasing the distance between the first end and the second end. The number of first portions of each conductive element can be configured to achieve a desired contact area and contact force. The terminal may include multiple conductive elements, the number of which can be selected according to the length of the pin.

[0078] In some embodiments, the first portion of the terminal may be configured to expand and contract radially so as to stably contact the inner wall of the sleeve. When a pin is inserted into the terminal, the pin may stretch the terminal so that the first portion of the terminal extends radially outward, enabling the pin to electrically connect to the sleeve via the terminal. For example, the first portion of the terminal can stably contact the inner wall of the sleeve. The number of first portions may be configurable depending on the desired force of the mating pin.

[0079] The terminal may include multiple conductive elements, each of which may include multiple first parts. The conductive elements may be stacked axially. The number of stacked conductive elements may be configured according to the length of the mating pin, which allows the terminal to occupy a relatively small volume. Such a configuration allows for stable interconnection and easy mating / unmating simultaneously. Furthermore, because the terminal structure is small and simple, the electrical connector has low manufacturing costs and is beneficial for product production.

[0080] Referring to Figures 1 to 3, as shown, the electrical connector may include terminals 10 located within a sleeve 20. The electrical connector can be mated with pins 30. Those skilled in the art will understand that the terminals are connected to a part of an electronic system, but this is not shown for the sake of simplicity of explanation.

[0081] In the illustrated example, terminal 10 comprises four conductive elements 11. Each conductive element 11 is formed in an annular shape. The conductive elements 11 are sequentially connected and stacked in the axial direction 102. Each conductive element 11 comprises three first parts 111 distributed around the outside of the conductive element 11 and a second part 14 connecting adjacent first parts 111.

[0082] The first portion 111 may be configured to expand and contract radially with respect to the conductive element 11. As shown in the figure, the sleeve 20 includes an annular cavity 21. The terminal 10 is positioned within the cavity 21 with the first portion 111 in contact with the wall 211 of the cavity 21. As shown in Figure 4, at least the outermost point of the first portion 11 is positioned on the annular shape of the cavity 21.

[0083] Figure 3 shows terminal 10 of an electrical connector configured as a corrugated spring. As can be seen, the corrugated spring has a band of flexible material (configured here as a spring plate) formed to contact a mating component, such as a pin 30 inserted into terminal 10, at multiple positions around the mating component.

[0084] Such a terminal 10 allows the spring plates 11 to be punched out from a metal sheet. The thickness of the sheet can define a radial range 108 of each spring plate 11. The surface of the sheet can define the surface 110 of each spring plate facing the center 104 (Figure 4). A pin 30 can be inserted into the terminal 10. The pin 30 may be formed in an annular shape. As shown in Figure 5, the second portion 14 may have an endpoint positioned on the annular shape of the pin 30. When the pin 30 is inserted into the terminal, the surface 311 of the pin 30 can contact the inner surface of the conductive element 11 of the terminal 10. The pin 30 can push the first portion 111 of the terminal 10 and extend it radially outward from the conductive element 11, bringing it into contact with the wall 211 of the cavity 21 of the sleeve 20, thereby forming a connection between the pin 30, the terminal 10, and the sleeve 20.

[0085] Due to the radial extension and contraction of the first portion 111 of the conductive element 11, the first portion 111 can stably contact the inner wall of the sleeve 20 when it extends outward. When the pin 30 is inserted into the terminal 10, the pin 30 extends the conductive element 11, causing the first portion 111 to extend radially outward and stably contact the inner wall of the sleeve 20, thereby forming a connection with the sleeve 20 via the terminal 10.

[0086] Terminal 10 has a small volume, which can be set according to the length of the pin 30. As shown in the figures, the multiple conductive elements 11 are connected sequentially in the axial direction according to the length of the pin 30. Therefore, terminal 10 has high applicability. For example, in the examples shown in Figures 1 to 3, terminal 10 has four conductive elements 11 connected in the axial direction 102, but it should be understood that the number of conductive elements 11 can be changed (more or less) according to the length of the pin into which terminal 10 is configured to mate.

[0087] The elastic force applied to the sleeve 20 by the terminal 10 can be controlled by the number of conductive elements 11 connected to it. The number of conductive elements 11 connected to it can be selected to provide sufficient force for a secure connection while avoiding excessive force that could make it difficult to insert and remove the pin 30. For example, more than three first parts 111 can be provided, thereby creating more connection points between the terminal 10 and the inner wall of the sleeve 20, which ensures stable current overload capability and thus the terminal has better practicality.

[0088] Referring to Figures 1, 3, and 4, in some embodiments of the present disclosure, each of the conductive elements 11 comprises a first end 112 and a second end 113. The first end 112 and the second end 113 may be adjacent to each other. The first end 112 and the second end 113 may cooperate to define an opening 114. For example, as shown in Figures 4 to 6, the opening 114 may be located in one of the first portions 111.

[0089] Figure 4 is a horizontal cross-sectional view of the electrical connector. As shown in the figure, the opening 114 is located in one of the first portions 111. When the pin 30 is inserted, the conductive element 11 extends radially outward, expanding the opening 114 and further separating the first end 112 and the second end 113 from each other. The surface 311 of the pin 30 may abut the inner surface of the conductive element 11. As the conductive element 11 extends, both sides of each of the first portions 111 exert outward pressure on their respective first portions 111. As a result, the first portions 111 exert greater force against the inner wall of the sleeve 20, making the connection more stable. Alternatively or additionally, each of the first portions 111 may be set as a smooth spherical surface in contact with the wall 211.

[0090] As can be seen in Figure 4, terminal 10 may include one or more conductive elements 11 that at least partially surround the region having the center 104. Each conductive element 11 may include three first portions 111, each offset from the center 104 by a first radius 106. Each conductive element 11 may also include a number of second portions 14 that connect adjacent first portions 111 and are offset from the center 104 by a first radius 106.

[0091] Referring to Figures 5 and 7, Figure 5 is a cross-sectional view of an electrical connector showing the gap between terminal 10 and the circumferential surface of the outer wall of pin 30, and Figure 7 is a schematic diagram showing the gap between terminal 10 and the circumferential surface of the outer wall of pin 30 unfolded as a straight line. As shown in the figures, the straight line may have a length equal to the circumference of the outer wall of pin 30. As shown in the figure, the straight line is equally divided, corresponding to the line segment shown by the dotted line in Figure 3. The line segment of the straight line and the line segment of the curve on the surface 311 of the outer wall of pin 30 may have the same length.

[0092] Taking a terminal 10 having three first parts 111 as an example, after the terminal 10 and the surface 311 of the pin 30 are unfolded along a straight line, the gap formed between the terminal 10 and the surface 311 of the pin 30 may show a smooth cosine wave shape change after three-dimensional unfolding. A peak may represent the first part 111 of the conductive element 11. A line segment region between the first part 111 and the surface 311 may represent the gap between the first part 111 and the surface 311. A trough may represent the starting point of contact between the conductive element 11 and the surface 311 (for example, a line segment region between the surface 311 and the starting point of contact may represent interference between the conductive element 11 and the pin 30). As shown by unfolding the terminal 10 and the surface 311 of the pin 30 along a straight line, the gap formed between the terminal 10 and the surface 311 of the pin 30 may show a smooth cosine wave shape change. Therefore, interference exists between the conductive element 11 and the pin 30.

[0093] A line segment region with a larger area may indicate greater interference between the conductive element 11 and the pin 30, and therefore greater pressing force by the pin 30 on the conductive element 11. A greater pressing force by the pin 30 on the conductive element 11 may lead to a greater contact force by the first portion 111 against the inner wall of the sleeve 20.

[0094] The gap formed between the terminal 10 and the surface 311 of the pin 30 may be configured to have a smooth shape change (for example, a smooth cosine wave shape change). Therefore, the length of the line segment in the line segment region can change gradually, as can the structural deformation of the conductive element 11, the contact state with the pin 30, and the stress state, thereby enabling the structural reliability of the conductive element 11 and the efficient use of the material.

[0095] Referring to Figures 6 and 8, Figure 6 is a cross-sectional view of an electrical connector showing the gap between terminal 10 and the inner wall of sleeve 20, and Figure 8 is a schematic diagram showing the gap between terminal 10 and the inner wall of sleeve 20 unfolded as a straight line. As shown in the figures, the straight line may have a length equal to the circumference of the inner wall of sleeve 20 (e.g., wall 211). As shown in the figure, the straight line is equally divided, corresponding to the line segment shown as a dotted line in Figure 3. The line segment of the straight line and the line segment of the curve of the inner wall of sleeve 20 (e.g., wall 211) may have the same length.

[0096] Taking a terminal 10 having three first parts 111 as an example, after unfolding the terminal 10 and the inner wall of the sleeve 20 (e.g., the wall 211 of the cavity 21) along a straight line, the gap formed between the terminal 10 and the wall 211 may show a smooth cosine wave shape change. A peak may be a point on the outer surface of the contact point between the conductive element 11 and the surface 311. The line segment region between this point and the wall 211 may represent interference between the conductive element 11 and the wall 211. A trough may represent the starting point of contact between the first part 111 and the wall 211. As shown by unfolding the terminal 10 and the wall 211 along a straight line, the gap formed between the terminal 10 and the wall 211 may show a smooth cosine wave shape change after three-dimensional unfolding. Therefore, interference exists between the conductive element 11 and the wall 211.

[0097] A line segment region with a larger area may indicate greater interference between the conductive element 11 and the wall 211, and therefore the contact force of the conductive element 11 against the wall 211 becomes greater, thereby stabilizing the connection.

[0098] The gap formed between the terminal 10 and the wall 211 may be configured to have a smooth shape change (for example, a smooth cosine wave shape change). Therefore, the length of the line segment in the line segment region can change gradually, as can the structural deformation of the conductive element 11, the contact state with the wall 211, and the stress state, thereby enabling the structural reliability of the conductive element 11 and the efficient use of the material.

[0099] Figures 9 to 11 show embodiments having a conductive element 11 with four first portions 111. Assuming that the diameter of the pin 30 does not change, the length of the pin does not change after being unfolded along a straight line. Because there are four peaks representing the first portions 111 of the conductive element 11, the area of ​​the line segment region between each of the first portions 111 and the surface 311, i.e., the area representing the gap between each of the first portions 111 and the surface 311, becomes smaller. As a result, the interference between the conductive element 11 and the pin 30, and consequently the pressing force of the pin 30 on the conductive element 11, becomes smaller. Furthermore, the smaller the pressing force of the pin 30 on the conductive element 11, the smaller the contact force of the first portions 111 against the inner wall of the sleeve 20. Similarly, since the length of the line segment in the line segment region also exhibits a cosine wave-like shape change, the structural deformation of the conductive element 11, the contact state with the wall 211, and the stress state can all be maintained in a cosine wave-like gradual change state, thereby ensuring the structural reliability of the conductive element 11 and the efficient use of the material. The same applies when multiple first parts 111 are provided.

[0100] Even if the conductive element 11 has more first parts 111 so that the contact force of the first parts 111 is reduced, interference still exists between the conductive element 11 and the surface 311, and therefore the terminal 10 still has connection stability. It should also be understood that as the number of first parts 111 increases, there are more contact points between the conductive element 11 and the sleeve 20, thereby resulting in a larger current overload capacity.

[0101] Figures 12 and 13 show embodiments having a conductive element 11 comprising five and six first portions 111, respectively. The location of the openings 114 may not be limited. The openings 114 may be located in the first portions 111 or between adjacent first portions 111.

[0102] Referring to Figures 3 and 2, in some embodiments of the present disclosure, two adjacent conductive elements 11 may be connected via a member 12. The member 12 may be integrated with the conductive elements 11 by welding or by buckling that is easily disassembled or connected. In this way, a rated number of conductive elements 11 can be provided according to specific connection requirements, and these can be sequentially connected via the member 12.

[0103] Member 12 may be located on one side of the first portion 111. For example, member 12 may be positioned above or below the first portion 111 (for example, in the axial direction 102 of the terminal 10). Member 12 may be used to connect the first portions 111 of two adjacent conductive elements 11. Alternatively or additionally, member 12 may be positioned on both sides of the first portion, thereby increasing the contact area between the first portion 111 and the wall 211, and thus increasing the connection strength of the conductive elements 11 while further increasing the current overload capacity.

[0104] The conductive element 11 may comprise a plurality of second parts 14. The number of second parts 14 may be determined according to the number of first parts 111. The ends of each second part 14 may be connected to the ends of two adjacent first parts 111, respectively, so as to connect the first parts 111 in series.

[0105] Member 12 may be positioned between adjacent first portions 111 (for example, on one side of the second portion 14). Member 12 may also be positioned at other locations, such as on one side of the joint between the second portion 14 and the first portion 111. The conductive elements 11 may overlap in the axial direction 102 to increase the length of the terminals, thereby enabling the manufacture of terminals with different lengths.

[0106] Referring to Figures 1 to 4, in some embodiments of the present disclosure, a projection 13 may be provided on one side of the conductive element 11. The projection 13 may be located between two adjacent first portions 111. One end of the projection 13 may be located on one side of the conductive element 11 and between two adjacent first portions 111. When inserting the pin 30 into the terminal 10, the surface 311 first contacts the projection 13, which can stretch the conductive element 11. This configuration prevents the surface of the pin 30 from being damaged by the edge of the conductive element 11. The projection 13 located between two adjacent first portions 111 can facilitate the stretching of the side of the conductive element 11 that contacts the pin 30 and increase the contact area between the two first portions.

[0107] According to aspects of this disclosure, the length of the terminal 10 of the electrical connector may be adapted according to the pin 30. The number of the multiple first parts 111 of the terminal 10 of the electrical connector may be configured to provide stable connection capability (for example, under the elastic effect of the terminal 10). The number of connected conductive elements 11 may be configured to allow controllable withdrawal and insertion forces, facilitating the insertion of the pin 30 into and withdrawal of the pin 30 from the electrical connector, and providing a comfortable user experience. The technology described herein enables a small and simple structure of the terminal 10, and as a result, the electrical connector may have lower manufacturing costs and be more beneficial to product production.

[0108] Referring to Figures 1 and 2, in some embodiments of the present disclosure, the insertion end of the pin 30 may be provided with an end face 31. The end face 31 may be formed (for example, curved) so that it can be attached to the projection 13 of the terminal 10. The arrangement of the end face 31 facilitates the insertion of the pin 30 and thus contact with the projection 13 of the terminal 10, thereby facilitating the attachment of the pin 30 to the projection 13 and the inner surface of the conductive element 11.

[0109] Referring to Figure 2, in some embodiments of this disclosure, both ends of the terminal 10 in the axial direction 102 may abut against both ends of the cavity 21, thereby reducing the risk of the terminal 10 coming off the sleeve 20.

[0110] Various embodiments, including but not limited to the following, are described in this disclosure. 1. A terminal (e.g., terminal 10) comprising one or more conductive elements (e.g., conductive element 11) that at least partially surround a region having a center (e.g., center 104), each of which comprises at least two first parts (e.g., first part 111) each offset from the center by a first radius (e.g., first radius 106), and a plurality of second parts (e.g., second part 14) connecting adjacent first parts of the at least two first parts and offset from the center by a first radius. 2. A terminal according to Embodiment 1 or any other embodiment, wherein each of one or more conductive elements is configured to expand and contract radially with respect to the center of the region. 3. A terminal according to Embodiment 1 or any other embodiment, wherein one or more conductive elements include two conductive elements stacked axially perpendicular to the radial direction with respect to the center of the region. 4. A terminal according to embodiment 3 or any other embodiment, comprising a member for connecting two conductive elements. 5. The terminal according to embodiment 4 or any other embodiment, wherein the member is positioned between two conductive elements and joins the first portions of the two conductive elements. 6. A terminal according to Embodiment 1 or any other embodiment, wherein each of one or more conductive elements comprises a first end and a second end separated from each other. 7. The terminal according to embodiment 6 or any other embodiment, wherein for each of one or more conductive elements, the first end and the second end are located in at least one of the two first parts. 8. A terminal according to Embodiment 1 or any other embodiment, wherein at least one of the conductive elements comprises one or more projections extending from the edge of the at least one conductive element and positioned between each adjacent first portion of the at least one conductive element, the one or more projections being angled away from the center. 9. A terminal according to Embodiment 1 or any other embodiment, wherein each of one or more conductive elements comprises three to six first parts. 10. One or more conductive elements are punched out from a metal sheet, as described in any one of embodiments 1 to 9 or any other embodiment. 11. The thickness of the sheet defines the radial range of each of one or more conductive elements, as described in embodiment 10 or any other embodiment. 12. The surface of the sheet defines the surface of one or more conductive elements facing the area, as described in embodiment 10 or any other embodiment. 13. A terminal according to any one of embodiments 1 to 9 or any other embodiment, wherein each of the plurality of second parts comprises an elongated band. 14. Terminals according to embodiment 13 or any other embodiment, in which elongated bands of one or more conductive elements are arranged in parallel. 15. A terminal according to embodiment 13 or any other embodiment, wherein each of at least two first parts comprises a bent portion. 16. An electrical connector comprising: a sleeve (e.g., sleeve 20) having an inner wall (e.g., wall 211) that borders a cavity (e.g., cavity 21); and a terminal disposed within the cavity and including a conductive element, wherein the conductive element comprises a first portion that abuts against the inner wall of the sleeve and a second portion disposed within the cavity and connecting adjacent first portions. 17. An electrical connector according to embodiment 16 or any other embodiment, wherein each of the first parts comprises an inflection point that contacts the inner wall of the sleeve. 18. An electrical connector according to embodiment 17 or any other embodiment, comprising a plurality of gaps located between the terminal portion and the inner wall of the sleeve, separated from each other by the inflection points of the respective first portions of the terminal that abut the inner wall of the sleeve. 19. An electrical connector according to embodiment 18 or any other embodiment, wherein each of the multiple gaps decreases toward the point of the respective first part. 20. An electrical connector according to embodiment 19 or any other embodiment, wherein each of the multiple gaps is symmetrical. 21. An electrical connector according to embodiment 20 or any other embodiment, wherein multiple gaps conform to waves. 22. An electrical connector according to embodiment 16 or any other embodiment, wherein the conductive element comprises a first end and a second end separate from the first end, and the first end and the second end are arranged in the first part. 23. An electrical connector according to embodiment 16 or any other embodiment, wherein the terminal comprises a plurality of conductive elements, the plurality of conductive elements stacked axially extending through a cavity of a sleeve. 24. An electrical connector according to embodiment 23 or any other embodiment, comprising a plurality of members that join first portions of adjacent conductive elements among a plurality of conductive elements. 25. An electrical connector according to embodiment 24 or any other embodiment, comprising a plurality of projections extending from the edges of second portions of a plurality of conductive elements and angled away from the center of a cavity. 26. A terminal mated to a pin, the terminal comprising one or more conductive elements that at least partially surround the pin, each of the one or more conductive elements comprising at least two first parts and a plurality of second parts, each of which contacts the surface of the pin at a first radius from the center of the pin, and at least two first parts connecting adjacent second parts of the plurality of second parts and offset greater than the first radius from the center of the pin. 27. A terminal according to embodiment 26 or any other embodiment, wherein one or more conductive elements are punched out from a metal sheet. 28. The terminal according to embodiment 27 or any other embodiment, wherein the thickness of the sheet defines the radial range of each of one or more conductive elements. 29. The terminal according to embodiment 27 or any other embodiment, wherein the surface of the sheet defines the surface of one or more conductive elements facing the center. 30. A terminal according to any one of embodiments 26 to 29 or any other embodiment, wherein each of the plurality of second parts comprises an elongated band. 31. Terminals according to embodiment 30 or any other embodiment, in which elongated bands of one or more conductive elements are arranged in parallel. 32. A terminal according to embodiment 30 or any other embodiment, wherein each of at least two first parts comprises a bent portion. 33. A terminal according to embodiment 26 or any other embodiment, wherein each of the one or more conductive elements comprises one or more projections extending from the edge of a second portion of the conductive element. 34. A method for operating an electrical connector, the electrical connector comprising a sleeve having a cavity and a terminal disposed within the cavity, the method comprising inserting a pin into the terminal, expanding the terminal, and generating pressure against the circumferential surface of the pin. 35. The method of embodiment 34 or any other embodiment, comprising generating pressure against the inner wall of the sleeve. 36. The method according to embodiment 34 or any other embodiment, wherein the terminal comprises one or more conductive elements that at least partially surround a region having a center, and each of the one or more conductive elements comprises at least two first portions offset from the center by a first radius greater than a first radius, and a plurality of second portions that connect adjacent first portions of the at least two first portions and are offset from the center by a first radius less than a first radius. 37. The method according to embodiment 36 or any other embodiment, wherein the terminal expansion includes expanding at least two first portions such that the contact area between at least two first portions and the inner wall of the sleeve is increased, and expanding a plurality of second portions such that the plurality of second portions conform to the circumferential surface of the pin. 38. The method according to embodiment 36 or any other embodiment, wherein each of one or more conductive elements comprises a first end located in the first part of at least two first parts, and a second end located in the first part of at least two first parts and separated from the first end, and extending the terminals comprises further increasing the distance between the first end and the second end. 39. The method of embodiment 36 or any other embodiment, wherein each of one or more conductive elements comprises a plurality of projections extending from the edges of a plurality of second parts of the conductive element and angled away from the center, and extending the terminals comprises, for each of one or more conductive elements, bringing the plurality of projections into contact with a pin, thereby guiding the pin to contact the plurality of second parts of the conductive element. 40. A corrugated spring (e.g., terminal 10) comprising a plurality of spring plates (e.g., conductive elements 11), the spring plates arranged in a ring, the spring plates sequentially connected and stacked in the axial direction, each spring plate comprising at least three contact portions (e.g., first portion 111), the contact portions distributed around the outside of each spring plate, and the contact portions configured to expand and contract radially around each spring plate. 41. A corrugated spring according to embodiment 40 or any other embodiment, wherein each of the spring plates comprises a first end and a second end, the first end and the second end being configured to abut each other and cooperate to define an opening (e.g., an opening 114). 42. A corrugated spring according to embodiment 41 or any other embodiment, wherein the opening is located at one of at least three contact portions. 43. A corrugated spring according to embodiment 40 or any other embodiment, wherein adjacent spring plates among a plurality of spring plates are connected via a connecting sheet (e.g., member 12). 44. A corrugated spring according to embodiment 43 or any other embodiment, wherein each of the plurality of spring plates further comprises a plurality of connecting portions (e.g., a second portion 14), and both ends of each connecting portion are connected to adjacent contact portions of at least three contact portions, and a connecting sheet is located on one side of each contact portion or on one side of each connecting portion, and the connecting sheet is configured to connect the contact portions of two adjacent spring plates. 45. A corrugated spring according to embodiment 40 or any other embodiment, wherein each of the plurality of spring plates is further provided with a guide portion (e.g., projection 13) on one side thereof, the guide portion being located between adjacent contact portions of at least three contact portions. 46. ​​A corrugated spring according to embodiment 40 or any other embodiment, wherein at least three contact portions include three to six contact portions. 47. A plug terminal connector comprising a corrugated spring as described in any one of embodiments 39 to 45 or any other embodiment, the plug terminal connector further comprising: a sleeve having an annular housing cavity disposed therein, a corrugated spring disposed therein, and a contact portion of which contacts a cavity wall (e.g., wall 211) of the housing cavity (e.g., cavity 21); and a contact pin that can be inserted into the corrugated spring. 48. A plug terminal connector according to embodiment 47 or any other embodiment, wherein the insertion end of the contact pin has an arcuate surface, and the arcuate surface is attachable to the guide portion of a corrugated spring. 49. A plug terminal connector according to embodiment 47 or any other embodiment, wherein both ends of the corrugated spring in the axial direction abut against both ends of the housing cavity, respectively. 50. A terminal comprising one or more conductive elements, each of which comprises a plurality of first parts, each having an outermost point (e.g., point 112) positioned on a first annular shape (e.g., the circumference of the wall 211 of the sleeve 20 as shown in Figure 4), and a plurality of second parts (e.g., point 114) positioned between adjacent first parts of the plurality of first parts and having endpoints joining the respective first parts, wherein the ends of the plurality of second parts are positioned on a second annular shape (e.g., the circumference of the surface 311 of the pin 30 as shown in Figure 4). 51. A terminal according to embodiment 50 or any other embodiment, wherein the first annular shape and the second annular shape are concentric. 52. A terminal according to embodiment 50 or any other embodiment, wherein each part of one or more conductive elements between adjacent outermost points of a plurality of first parts is separated from the first annular shape by a gap (e.g., gap 120), the gap decreasing toward each outermost point. 53. A terminal according to embodiment 52 or any other embodiment, wherein the gap is symmetrical. 54. A terminal according to embodiment 50 or any other embodiment, wherein each of a plurality of first parts is separated from a second annular shape by a first gap (e.g., gap 116), and each of a plurality of second parts is separated from a second annular shape by a second gap (e.g., gap 118) different from the first gap. 55. A terminal according to embodiment 50 or any other embodiment, wherein each of one or more conductive elements comprises a first end located in a first portion and a second end located in the first portion and separated from the first end.

[0111] Embodiments of the present invention have been described in detail with reference to the drawings above, but this disclosure is not limited to the embodiments described above, and various modifications can be made within the scope of the knowledge of those skilled in the art without departing from the purpose of this disclosure.

[0112] Embodiments of the Disclosure are described in detail herein, and examples of embodiments are shown in the drawings, where the same or similar reference numerals throughout the drawings may indicate the same or similar elements, or elements having the same or similar function. Embodiments described herein with reference to the drawings are illustrative and are intended solely to illustrate the Disclosure and should not be understood as limiting the Disclosure.

[0113] In the description of this disclosure, any orientation or positional relationship, such as those indicated by terms like "up," "down," "front," "back," "left," and "right," is based on the orientation or positional relationship shown in the drawings and is used solely for the convenience and simplification of the description of this disclosure. It does not indicate or imply that the shown device or element must have a particular orientation, or must be configured and operated in a particular orientation, and should therefore not be understood as limiting this disclosure.

[0114] Unless expressly defined in the description of this disclosure, the terms “installation,” “attachment,” and “connection” should be interpreted broadly, and a person skilled in the art can reasonably determine the specific meaning of these terms in this disclosure in conjunction with the specific content of the technical solution.

Claims

1. It comprises one or more conductive elements that at least partially surround the region having a center, Each of the one or more conductive elements is At least two first portions that are offset from the center and are greater than the first radius, Connecting adjacent first parts of the at least two first parts, and a plurality of second parts that are offset from the center and have a radius smaller than the first radius, A terminal equipped with a terminal.

2. The terminal according to claim 1, wherein each of the one or more conductive elements is configured to expand and contract radially with respect to the center of the region.

3. The terminal according to claim 1, wherein the one or more conductive elements include two conductive elements stacked in an axial direction perpendicular to the radial direction with respect to the center of the region.

4. The terminal according to claim 3, further comprising a member for connecting the two conductive elements.

5. The terminal according to claim 4, wherein the member is positioned between the two conductive elements and joins the first portions of the two conductive elements.

6. The terminal according to claim 1, wherein each of the one or more conductive elements comprises a first end and a second end separated from each other.

7. For each of the one or more conductive elements, The terminal according to claim 6, wherein the first end and the second end are located in one of the at least two first portions.

8. At least one of the one or more conductive elements comprises one or more projections extending from the edge of the at least one conductive element and positioned between each adjacent first portion of the at least one conductive element, The terminal according to claim 1, wherein one or more of the projections are angled away from the center.

9. The terminal according to claim 1, wherein each of the one or more conductive elements includes three to six first parts.

10. The terminal according to any one of claims 1 to 9, wherein the one or more conductive elements are punched out from a metal sheet.

11. The terminal according to claim 10, wherein the thickness of the sheet defines the radial range of each of the one or more conductive elements.

12. The terminal according to claim 10, wherein the surface of the sheet defines the surface of one or more conductive elements facing the region.

13. The terminal according to any one of claims 1 to 9, wherein each of the plurality of second parts comprises an elongated band.

14. The terminal according to claim 13, wherein the elongated bands of one or more conductive elements are arranged in parallel.

15. The terminal according to claim 13, wherein each of at least two first parts comprises a bent portion.

16. A sleeve having an inner wall that defines the cavity, The cavity is disposed within the aforementioned cavity and comprises a terminal including a conductive element, The aforementioned conductive element is The first portion that contacts the inner wall of the sleeve, A second portion is located within the cavity and connects adjacent first portions, An electrical connector equipped with the following features.

17. The electrical connector according to claim 16, wherein each of the first parts has an inflection point that contacts the inner wall of the sleeve.

18. The electrical connector according to claim 17, comprising a plurality of gaps located between the portion of the terminal and the inner wall of the sleeve, separated from each other by the inflection points of each first portion of the terminal that abuts the inner wall of the sleeve.

19. The electrical connector according to claim 18, wherein each of the plurality of gaps decreases toward the point of each of the first portions.

20. The electrical connector according to claim 19, wherein each of the plurality of gaps is symmetrical.

21. The electrical connector according to claim 20, wherein the plurality of gaps conform to waves.

22. The conductive element comprises a first end and a second end separate from the first end. The electrical connector according to claim 16, wherein the first end and the second end are arranged in the first portion.

23. The terminal comprises a plurality of conductive elements, including the conductive element. The electrical connector according to claim 16, wherein the plurality of conductive elements are stacked in the axial direction extending through the cavity of the sleeve.

24. The electrical connector according to claim 23, further comprising a plurality of members that join first portions of adjacent conductive elements among the plurality of conductive elements.

25. The electrical connector according to claim 24, comprising a plurality of projections extending from the edges of the second portions of the plurality of conductive elements and angled away from the center of the cavity.

26. A terminal that is mated to a pin, The pin comprises one or more conductive elements that at least partially surround it, Each of the one or more conductive elements is It comprises at least two first parts and a plurality of second parts, Each of the aforementioned plurality of second portions contacts the surface of the pin at a first radius from the center of the pin, A terminal in which at least two first parts connect adjacent second parts of the plurality of second parts and are offset from the center of the pin by a radius greater than the first radius.

27. The terminal according to claim 26, wherein one or more conductive elements are punched out from a metal sheet.

28. The terminal according to claim 27, wherein the thickness of the sheet defines the radial range of each of the one or more conductive elements.

29. The terminal according to claim 27, wherein the surface of the sheet defines the surface of one or more conductive elements facing the center.

30. Each of the plurality of second parts comprises an elongated band, the terminal according to any one of claims 26 to 29.

31. The terminal according to claim 30, wherein the elongated bands of one or more conductive elements are arranged in parallel.

32. The terminal according to claim 30, wherein each of at least two first parts comprises a bent portion.

33. The terminal according to claim 26, wherein each of the one or more conductive elements comprises one or more projections extending from the edge of the second portion of the conductive element.

34. A method for operating an electrical connector comprising a sleeve having a cavity and terminals disposed within the cavity, Inserting a pin into the aforementioned terminal, To expand the aforementioned terminals, To generate pressure on the circumferential surface of the aforementioned pin, Methods that include...

35. The method according to claim 34, comprising generating pressure against the inner wall of the sleeve.

36. The terminal comprises one or more conductive elements that at least partially surround a region having a center, Each of the one or more conductive elements is At least two first portions, each offset from the center by a radius greater than the first radius, The method according to claim 34, comprising a plurality of second parts that connect adjacent first parts of the at least two first parts and are offset from the center by a radius less than the first radius.

37. Expanding the aforementioned terminals means Expanding the at least two first portions such that the contact area between the at least two first portions and the inner wall of the sleeve increases, The plurality of second portions are extended so that they fit the circumferential surface of the pin, The method according to claim 36, including the method described in claim 36.

38. Each of the one or more conductive elements is A first end positioned in the first of the at least two first parts, It comprises a second end located in the first of the at least two first parts and separated from the first end, The method according to claim 36, wherein extending the terminals further increases the distance between the first end and the second end.

39. Each of the one or more conductive elements comprises a plurality of projections extending from the edges of the plurality of second portions of the conductive element and angled away from the center, The method according to claim 36, wherein extending the terminals includes bringing the plurality of protrusions into contact with the pin for each of the one or more conductive elements, thereby guiding the pin to contact the plurality of second portions of the conductive element.

40. Equipped with multiple spring plates, A corrugated spring in which the spring plates are arranged in a ring, are sequentially connected and stacked in the axial direction, each of the spring plates has at least three contact points, the contact points are distributed around the outside of each spring plate, and the contact points are configured to expand and contract radially around each spring plate.

41. Each of the spring plates has a first end and a second end, The wave spring according to claim 40, wherein the first end and the second end are configured to abut each other and cooperate to define an opening.

42. The wave spring according to claim 41, wherein the opening is located at one of the at least three contact portions.

43. The corrugated spring according to claim 40, wherein adjacent spring plates among the plurality of spring plates are connected via a connecting sheet.

44. Each of the aforementioned plurality of spring plates further comprises a plurality of connecting parts, Each end of the aforementioned connecting portion is connected to an adjacent contact portion among the at least three contact portions, The connecting sheet is located on one side of each contact portion or on one side of each of the connecting portions. The corrugated spring according to claim 43, wherein the connecting sheet is configured to connect the contact portions of two adjacent spring plates.

45. Each of the aforementioned plurality of spring plates is further provided with a guide portion on one side, The wave spring according to claim 40, wherein the guide portion is located between adjacent contact portions among the at least three contact portions.

46. The waveform spring according to claim 40, wherein the at least three contact portions include three to six contact portions.

47. A plug terminal connector comprising a wave spring according to any one of claims 39 to 45, Sleeves and A contact pin that can be inserted into the aforementioned wave spring, Furthermore, A plug terminal connector in which an annular housing cavity is disposed within the sleeve, the corrugated spring is disposed within the housing cavity, and the contact portion contacts the cavity wall of the housing cavity.

48. The insertion end of the aforementioned contact pin has an arcuate surface, The plug terminal connector according to claim 47, wherein the arcuate surface can be attached to the guide portion of the wave spring.

49. The plug terminal connector according to claim 47, wherein both ends of the wave spring in the axial direction abut against both ends of the housing cavity, respectively.

50. Equipped with one or more conductive elements, Each of the one or more conductive elements is A plurality of first parts, each having an outermost point arranged on a first annular shape, A plurality of second parts, arranged between adjacent first parts of the plurality of first parts, and having endpoints that join the respective first parts, wherein the ends of the plurality of second parts are arranged on a second annular shape, A terminal equipped with a terminal.

51. The terminal according to claim 50, wherein the first annular shape and the second annular shape are concentric.

52. Each of the one or more conductive elements between adjacent outermost points of the plurality of first parts is separated from the first annular shape by a gap. The terminal according to claim 50, wherein the gap decreases toward each outermost point.

53. The terminal according to claim 52, wherein the gap is symmetrical.

54. Each of the plurality of first parts is separated from the second annular shape by a first gap, The terminal according to claim 50, wherein each of the plurality of second parts is separated from the second annular shape by a second gap different from the first gap.

55. Each of the one or more conductive elements is A first end positioned in the first part, A second end is positioned in the first portion and separated from the first end, The terminal according to claim 50, comprising:

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