Connection terminal and connector

Abstract

This utility model discloses a connection terminal and a connector. The connection terminal includes a terminal body, two elastic plates, and a fixing sleeve. The terminal body includes two side plates and a wiring portion connected to one end of the two side plates. The two side plates are arranged opposite each other and spaced apart. An elastic plate is disposed on the inner side of one side plate, and the two elastic plates enclose a mating area. The elastic plate has multiple elastic arms arranged in a ring, and at least part of the elastic arms extend towards the mating area. The fixing sleeve is disposed on the outer side of the terminal body and fixed to the two side plates. The fixing sleeve has a plug interface communicating with the mating area. The fixing sleeve is used to limit the deformation of the two side plates in the direction away from the elastic plate. The plug is inserted into the mating area through the plug interface and elastically abuts against the multiple elastic arms. The technical solution of this utility model aims to ensure the reliability of contact when the connection terminal is connected to the plug to meet the requirements of use under high voltage and high current conditions.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connecting terminal and a connector. Background Technology

[0002] Connectors are widely used in the power equipment industry, electric vehicle charging systems, elevator control systems, new energy power generation and other fields. Connectors have connection terminals, which provide contact points. When the plug is inserted into the socket, the wires are connected to the external circuit through the connection terminals, thereby realizing the effective transmission of current or signals between different parts.

[0003] In related technologies, the ends of the connecting terminals are provided with two opposing elastic clamping arms. The elastic clamping arms have few contact points with the plug-in components, and after repeated plugging and unplugging, the two elastic clamping arms are prone to deformation, resulting in unreliable contact, which cannot meet the requirements for use under high voltage and high current conditions. Utility Model Content

[0004] The main purpose of this utility model is to provide a connection terminal and connector, which aims to ensure the reliability of contact when the connection terminal is connected to the plug, so as to meet the usage requirements under high voltage and high current conditions.

[0005] To achieve the above objectives, the connection terminal proposed in this utility model includes:

[0006] The terminal body includes two side plates and a wiring portion connected to one end of the two side plates, the two side plates being arranged opposite each other and spaced apart;

[0007] Two elastic sheets, one of which is disposed on the inner side of the side plate, and the two elastic sheets surround each other to form an insertion area. Each elastic sheet is provided with multiple elastic arms, which are arranged in a circular manner, and at least part of the elastic arms extend toward the insertion area.

[0008] A fixing sleeve is provided on the outside of the terminal body and fixed to the two side plates. The fixing sleeve is provided with a plug interface communicating with the plug area. The fixing sleeve is used to restrict the deformation of the two side plates in the direction away from the elastic sheet.

[0009] The connector is inserted into the plug area from the plug interface and elastically abuts against the plurality of elastic arms.

[0010] In one embodiment of the present invention, the elastic sheet further includes a main body, and the elastic arm includes a plurality of first elastic arms and a plurality of second elastic arms, the first elastic arms and the second elastic arms being spaced apart; the first elastic arm includes a first segment, a second segment and a third segment connected in sequence and arranged at an angle, and the second elastic arm includes a first segment and a second segment connected in sequence and arranged at an angle;

[0011] The first segment is connected to the main body and extends toward the insertion area. The second segment extends away from the insertion area, and the third segment extends toward the insertion area.

[0012] The area between the first segment and the second segment forms at least one contact point with the connector.

[0013] A support point is formed between the second segment and the third segment to abut against the side plate.

[0014] In one embodiment of this utility model, the contact points formed by a plurality of first elastic arms and a plurality of second elastic arms are arranged at circumferential intervals.

[0015] The support points formed by the multiple first elastic arms are distributed at circumferential intervals.

[0016] In one embodiment of this utility model, the first segment, the second segment, and the third segment are all connected by a rounded transition.

[0017] And / or, the extension lengths of the first segment, the second segment, and the third segment gradually decrease.

[0018] In one embodiment of the present invention, the elastic sheet further includes an elastic region disposed at the center of the main body, a plurality of elastic arms are disposed around the elastic region, and a plurality of spaced positioning notches are formed on the side of the main body;

[0019] The inner surface of the side plate is provided with a plurality of spaced limiting buckles, which abut against the positioning notch or the side of the main body to limit the movement of the main body relative to the side plate.

[0020] And / or, the main body is further provided with a plurality of rivet points, the plurality of rivet points surrounding the outer side of the elastic region, and the main body and the side plate are riveted and fixed by the rivet points.

[0021] In one embodiment of the present invention, the fixing sleeve includes a first plate, a connecting plate, and a second plate connected in sequence. The first plate, the connecting plate, and the second plate form a U-shaped groove, which is used to accommodate the two side plates of the terminal body.

[0022] The first plate is also connected to a first buckle plate, which is provided with a buckle. The first buckle plate is bent relative to the first plate and abuts against the edge of the side plate.

[0023] The second plate is also connected to a second buckle plate, which has buckle holes. The second buckle plate is bent relative to the second plate and covers the outside of the first buckle plate so that the buckle engages with the buckle holes.

[0024] In one embodiment of the present invention, a first fixing buckle is formed on the surface of the first plate, and the open end of the first fixing buckle is disposed facing the wiring portion.

[0025] A second fixing buckle is formed on the surface of the second plate, and the open end of the second fixing buckle is arranged facing the wiring part.

[0026] The connecting terminal is fixedly connected to the insulating base via the first fixing buckle and the second fixing buckle.

[0027] In one embodiment of the present invention, anti-mistake ribs are further formed on the surfaces of the first plate and the second plate. The anti-mistake ribs extend along the length direction of the first plate and are located at the top and bottom of the first fixing buckle, and are spaced apart from the first fixing buckle.

[0028] In one embodiment of the present invention, the sides of the first plate and the second plate are further bent to form a limiting card platform, and the edge of the side plate is provided with a corresponding card groove, and the limiting card platform is inserted into the card groove.

[0029] In one embodiment of this utility model, the connecting plate is disposed on the bottom surface of the fixing sleeve, and the insertion interface is located on the side of the fixing sleeve away from the wiring part, so that the insertion direction of the insertion piece is parallel to the extension direction of the connecting terminal.

[0030] In one embodiment of this utility model, the connecting plate is disposed on the side of the fixing sleeve away from the wiring part, and the plug interface is located on the side of the fixing sleeve near the connecting plate, so that the plug insertion direction and the extension direction of the connecting terminal are set at an angle.

[0031] This utility model also provides a connector, which includes an insulating base and a connecting terminal, wherein the connecting terminal is fixed to the insulating base.

[0032] The connection terminal in this application includes a terminal body, an elastic sheet, and a fixing sleeve. The terminal body includes two spaced and opposing side plates, and a wiring portion connected to the two side plates. The two side plates are connected at the end near the wiring portion by a connecting structure. Each side plate has an elastic sheet on its inner side, and the elastic sheet has multiple elastic arms, at least a portion of which extends toward the insertion area. The multiple elastic arms on the elastic sheet are arranged in a circumferential manner. The fixing sleeve is fitted on the outer side of the side plate to limit the deformation of the side plate in a direction away from the elastic sheet during use. When the connector is inserted into the insertion area of ​​the connection terminal through the insertion interface of the fixing sleeve, the multiple elastic arms form multiple contact points with the connector, and the connector forces the elastic arms to elastically deform to form contact pressure, ensuring reliable contact pressure and sufficient contact points between the connection terminal and the connector. The fixing sleeve also ensures that the elastic sheet always maintains a preset clamping force. Under high voltage and high current conditions, the multiple contact points form parallel conductive channels, effectively reducing contact resistance and temperature rise, and meeting the usage requirements under high voltage and high current conditions. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort.

[0034] Figure 1 This is a schematic diagram of the structure of one embodiment of the connecting terminal of this utility model;

[0035] Figure 2 for Figure 1 A cross-sectional view along one direction of the connecting terminal;

[0036] Figure 3 for Figure 1 A cross-sectional view of the connecting terminal from another direction;

[0037] Figure 4 This is an exploded view of the connection terminal structure of this utility model;

[0038] Figure 5 for Figure 4 A cross-sectional view of the connecting terminal;

[0039] Figure 6 This is a schematic diagram of another embodiment of the connecting terminal of this utility model;

[0040] Figure 7 This is an exploded view of another embodiment of the connecting terminal of this utility model;

[0041] Figure 8This is a schematic diagram of the structure of an embodiment of the connector of this utility model;

[0042] Figure 9 This is a partial cross-sectional view of the connector of this utility model;

[0043] Figure 10 This is an exploded view of the connector structure of this utility model.

[0044] Explanation of icon numbers:

[0045] 100. Connecting terminal; 10. Terminal body; 11. Side plate; 111. Limiting buckle; 113. Slot; 13. Wiring part; 20. Elastic sheet; 21. Main body; 211. Riveting point; 213. Positioning notch; 23. Elastic area; 25. Elastic arm; 251. First elastic arm; 253. Second elastic arm; 2511. First segment; 2513. Second segment; 2515. Third segment; 27. Insertion area; 30. Fixing sleeve; 31. First plate; 311. First fixing buckle; 313. Anti-foolproof rib; 32. Second plate; 321. Second fixing buckle; 33. First buckle plate; 331. Buckle; 34. Second buckle plate; 341. Buckle hole; 35. Connecting plate; 36. Limiting buckle platform; 37. Insertion interface; 200, Insulating base; 210, Anti-disengagement clip; 300, Plug-in part; 1000, Connector.

[0046] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0051] In related technologies, the connecting terminal 100 generally adopts a structure of two oppositely arranged elastic clamping arms. This structure results in only single-point or double-point contact between the plug-in 300 and the elastic clamping arms. During long-term use, the elastic clamping arms are prone to plastic deformation due to stress concentration caused by repeated insertion and removal, and the contact pressure gradually decreases. Especially under high current load conditions, the temperature rise caused by the increase in contact resistance will accelerate material fatigue and eventually lead to contact failure.

[0052] To address the aforementioned issues, this application proposes a connection terminal 100 and a connector 1000.

[0053] Reference Figures 1 to 3In one example of this application, the connecting terminal 100 includes a terminal body 10, elastic pieces 20, and a fixing sleeve 30. The terminal body 10 includes two side plates 11 and a wiring portion 13 connected to one end of the two side plates 11. The two side plates 11 are arranged opposite to each other and spaced apart. Of the two elastic pieces 20, one elastic piece 20 is disposed inside one of the side plates 11, and the two elastic pieces 20 enclose a plug-in area 27. Each elastic piece 20 is provided with a plurality of elastic arms 25. The arm 25 is arranged in a circumferential manner, and at least a portion of the elastic arm 25 extends toward the insertion area 27; the fixing sleeve 30 is provided on the outside of the terminal body 10 and is fixed to the two side plates 11. The fixing sleeve 30 is provided with a plug interface 37 communicating with the insertion area 27. The fixing sleeve 30 is used to restrict the deformation of the two side plates 11 toward the direction away from the elastic piece 20; the plug member 300 is inserted into the insertion area 27 through the plug interface 37 and elastically abuts against the plurality of elastic arms 25.

[0054] In one embodiment of the present application, the terminal body 10 includes two spaced and opposite side plates 11, and a wiring portion 13 connected to the two side plates 11. The two side plates 11 are connected by a connection structure at one end near the wiring portion 13. Each of the two side plates 11 has an elastic sheet 20 on its inner side. The elastic sheet 20 has a plurality of elastic arms 25, and at least some of the elastic arms 25 extend toward the insertion area 27.

[0055] The terminal body 10 is made of metal. The two side plates 11 can be coplanar before the elastic pieces 20 are connected. After the two elastic pieces 20 are fixed to the two side plates 11 respectively, the two side plates 11 can be bent to face each other using a bending process. The wiring part 13 is connected to the ends of the two side plates 11 through a bending process, and the wiring part 13 is used for connection and fixation with wires. The elastic pieces 20 are installed on the inner surface of the side plates 11. The elastic pieces 20 are also made of metal with good conductivity. The elastic pieces 20 are formed by a stamping process to create multiple elastic arms 25 extending in different directions. The elastic pieces 20 are fixed to the inner surface of the side plates 11 by riveting or welding. The multiple elastic arms 25 are arranged in a ring, forming multiple contact points with the connector 300. The connector 300 can be inserted into the insertion area 24 from multiple directions. When the connector 300 is inserted, it forces the elastic arms 25 to undergo elastic deformation, creating contact pressure and ensuring reliable contact pressure between the connecting terminal 100 and the connector 300. The fixing sleeve 30 is a constraint component fitted onto the outside of the side plate 11. The fixing sleeve 30 is also made of bent stainless steel strip and is fixed by a snap-fit ​​structure 331. It is used to limit the deformation of the side plate 11 in the direction away from the elastic sheet 20 during use. Depending on the insertion direction of the connector 300, a matching insertion interface 37 can be formed on the fixing sleeve 300 to meet different connection requirements. When the connector 300 is inserted into the insertion area 27 of the connecting terminal 100, multiple elastic arms 25 form multiple contact points with the connector 300, and the connector 300 forces the elastic arms 25 to undergo elastic deformation to form contact pressure, ensuring reliable contact pressure and sufficient contact points between the connecting terminal 100 and the connector 300, meeting the requirements for use under high voltage and high current conditions.

[0056] Meanwhile, since the multiple elastic arms 25 are arranged in a ring, when the connector 300 is inserted into the insertion area 27, its outer surface simultaneously contacts the multiple elastic arms 25 on the two elastic plates 20. Each elastic arm 25 undergoes elastic deformation during the insertion of the connector 300, forming a contact pressure evenly distributed along the circumference. This ensures that the clamping force on the connector 300 remains balanced radially, avoiding stress concentration on one side. The fixing sleeve 30, by wrapping around the outer surface of the side plate 11, prevents the side plate 11 from expanding and deforming outward under the insertion and extraction force, ensuring that the elastic plates 20 always maintain the preset clamping force. Under high voltage and high current conditions, multiple contact points form parallel conductive channels, effectively reducing contact resistance and temperature rise. This application solution achieves multi-point contact between the plug 300 and the connecting terminal 100, effectively dispersing current load and mechanical stress. The setting of the fixing sleeve 30 also effectively improves the deformation of the side plate 11 of the terminal body 10, ensuring that the contact pressure is maintained within the design range during long-term use. This makes the connecting terminal 100 suitable for scenarios requiring high-reliability electrical connections, such as electric vehicle charging piles and industrial equipment power modules, and solves the technical problem of contact failure of traditional terminals under high current conditions.

[0057] Reference Figures 3 to 5 The elastic arm 25 includes a plurality of first elastic arms 251 and a plurality of second elastic arms 253, the first elastic arms 251 and the second elastic arms 253 being spaced apart; the first elastic arm 251 includes a first segment 2511, a second segment 2513 and a third segment 2515 connected in sequence and arranged at an angle, and the second elastic arm 253 includes a first segment 2511 and a second segment 2513 connected in sequence and arranged at an angle;

[0058] The first segment 2511 is connected to the main body and extends toward the insertion area 27. The second segment 2513 extends away from the insertion area 27, and the third segment 2515 extends toward the insertion area 27.

[0059] The area between the first segment 2511 and the second segment 2513 forms at least one contact point with the connector 300.

[0060] A support point is formed between the second segment 2513 and the third segment 2515, which abuts against the side plate 11.

[0061] The first elastic arm 251 and the second elastic arm 253 have roughly the same structure. Both the first elastic arm 251 and the second elastic arm 253 are elastic structures that directly contact the connector 300 and are arc-shaped metal sheet structures. A support point that can abut against the side plate 11 is also formed between the second segment 2513 and the third segment 2515 of the first elastic arm 251, which can improve the stability of the first elastic arm 251 and form a reaction force support with the contact point to avoid large-scale deformation due to the squeezing force of the connector 300. The first elastic arm 251 and the second elastic arm 253 are arranged alternately, meaning that the first elastic arm 251 and the second elastic arm 253 are arranged alternately in the elastic region 23, and the lengths of the first elastic arm 251 and the second elastic arm 253 are set to be different to avoid interference between them during deformation.

[0062] Specifically, the first elastic arm 251 and the second elastic arm 253 are compressed when the connector 300 is inserted. Through their own elastic deformation, they form multiple contact points with the surface of the connector 300, thereby increasing the conductive contact area. The first elastic arm 251 also abuts against the side plate 11 during the insertion process and generates a reverse elastic force, preventing excessive deformation of the first elastic arm 251 and ensuring that the first elastic arm 251 maintains an elastic abutment with the connector 300. This maintains the stability of the contact between the connector 300 and the elastic sheet 20, effectively avoiding poor contact. The first elastic arm 251 and the second elastic arm 253 are spaced apart and have different lengths, so that they do not interfere with each other during deformation.

[0063] In the technical solution of this embodiment, the problem of unreliable contact caused by the small number of contact points and easy deformation of the elastic clamping arm is effectively solved, and multi-point stable contact between the plug-in 300 and the elastic arm 25 is achieved. At the same time, the deformation of the side plate 11 is suppressed by the bidirectional elastic support structure, ensuring the long-term reliability of the connection terminal 100 under high voltage or high current conditions.

[0064] The first elastic arm 251 includes a first segment 2511, a second segment 2513, and a third segment 2515 connected sequentially and arranged at an angle. The first segment 2511 is connected to the main body 21 and extends toward the insertion area 27. The second segment 2513 extends away from the insertion area 27, and the third segment 2515 extends toward the insertion area 27. The elastic arm 25 forms at least one contact point with the insertion member 300. The three segments of the first elastic arm 251 form a wave-like structure through extension paths in different directions. The first segment 2511 refers to the starting part of the elastic arm 25, which is directly connected to the main body 21. It adopts a slightly curved sheet structure, and its extension direction forms an angle with the main body 21. It is used to provide elastic support in the initial stage of insertion. The second segment 2513 is the middle part connecting the first segment 2511 and the third segment 2515. It adopts a reverse-bent arc structure, and its extension direction is away from the insertion area 27. The third segment 2515 refers to the end part of the elastic arm 25. It is a sheet structure with a second reverse bend. The area between the second segment 2513 and the third segment 2515 is used to form a support point with the side plate 11.

[0065] The second spring arm 253 includes a first segment 2511 and a second segment 2513 connected and arranged at an angle. The first segment 2511 of the second spring arm 253 extends in the same direction and has the same length as the first segment 2511 of the first spring arm 251, ensuring that the contact points formed by the second spring arm 253, the first spring arm 251, and the connector 300 are on the same circumference. Preferably, the extension length of the second segment 2513 of the second spring arm 253 is less than the extension length of the second segment 2513 of the first spring arm 251. The second segment 2513 of the second spring arm 253 extends in the same direction as the first segment 2513 of the first spring arm 251, but is shorter in length, thus avoiding interference between the second spring arm 253 and the first spring arm 251.

[0066] Reference Figure 5In one embodiment of this utility model, the contact points formed by multiple first spring arms 251 and multiple second spring arms 253 are distributed at intervals along the circumference. This allows the contact points formed by the multiple first spring arms 251 and second spring arms 253 to be arranged in a 360° surround configuration, ensuring that the connector 300 has multiple contact points with the terminal body and that the force is evenly distributed when inserted. A support point is formed in the area between the second segment 2513 and the third segment 2515. The support points formed by the multiple first spring arms are distributed in a circumferential direction, thus ensuring that the support between each first spring arm 251 and the side plate is more stable and reliable. This also ensures that the elastic sheet receives a uniform support force opposite to the direction of the contact points, ensuring reliable contact between the connector 300 and the elastic sheet.

[0067] Continue to refer to Figure 5 In one embodiment of this application, the segments of the elastic arm 25 are connected by a rounded transition. This rounded transition refers to the use of an arc-shaped structure instead of a right-angle connection at the joints between the first segment 2511, the second segment 2513, and the third segment 2515 of the elastic arm 25. The rounded corners have a radius of 1 mm to 5 mm. This design eliminates stress concentration at right-angle joints, resulting in a more uniform stress distribution during repeated deformation of the elastic arm 25. The rounded transition disperses stress in the arc-shaped connection areas of each segment, avoiding the risk of localized fracture. The gradually decreasing extension length of the elastic arm 25 refers to the sequentially decreasing lengths of the first segment 2511, the second segment 2513, and the third segment 2515. For example, the first segment 2511 is 10 mm long, the second segment 2513 is 6 mm long, and the third segment 2515 is 3 mm long, forming a stepped shortening. This structure creates a gradual elastic gradient, controlling the overall deformation amplitude through the length differences of the different segments. When the connector 300 is inserted, the extension length gradually decreases, giving the third segment 2515 a larger elastic displacement space than the first segment 2511, thus ensuring contact pressure while avoiding plastic deformation.

[0068] In the technical solution of this embodiment, the problem of fracture caused by stress concentration of the elastic arm 25 is effectively solved, and the deformation capability of the elastic arm 25 is optimized to ensure that the connector 300 can maintain stable multi-point contact pressure after multiple insertions and removals.

[0069] Reference Figure 2 , Figure 4 as well as Figure 5In one embodiment of this application, the elastic sheet 20 includes a main body 21 and an elastic region 23 located at the center of the main body 21. The elastic region 23 refers to the area where the elastic sheet 20 forms multiple elastic arms 25, that is, the space within the largest circumference where the main body 21 connects with the multiple elastic arms 25. The multiple elastic arms 25 are arranged around the elastic region 23. Multiple spaced positioning notches 213 are formed on the side of the main body 21. Multiple spaced limiting buckles 111 are protruded from the inner surface of the side plate 11. The limiting buckles 111 abut against the positioning notches 213 or the side of the main body 21 for limiting. The main body 21 is also provided with multiple riveting points 211. The multiple riveting points 211 surround the outer side of the elastic region 23. The main body 21 and the side plate 11 are riveted and fixed by the riveting points 211. The positioning notch 213 refers to the groove structure opened on the side of the main body 21, which can be formed by a punching process. It restricts the displacement of the elastic sheet 20 by cooperating with the limiting buckles 111. The limiting buckle 111 refers to a protruding structure stamped on the inner surface of the side plate 11, which limits movement in three directions through contact with the positioning notch 213 or the side of the main body 21. The riveting point 211 is the metal connection point between the main body 21 and the side plate 11. Multiple riveting points 211 are arranged in a ring along the outer side of the elastic region 23, eliminating the assembly gap between the elastic sheet 20 and the side plate 11 through multi-point riveting. This solution achieves double fixation while ensuring the free movement of the elastic arm 25, through the limiting cooperation of the positioning notch 213 and the limiting buckle 111, combined with the surrounding riveting points 211, thus avoiding the technical difficulties of high-precision alignment required during processing.

[0070] The technical solution of this embodiment can prevent the elastic sheet 20 from shifting position during insertion and removal, ensuring that the elastic arm 25 maintains stable multi-point contact with the connector 300. The elastic sheet 20 and the side plate 11 form a dual fixation of position limiting and rigid riveting, significantly improving the vibration resistance of the connecting terminal 100. The regional arrangement of the positioning notch 213 and the riveting point 211 simplifies the processing technology, improves production efficiency, and enhances product consistency.

[0071] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7In one embodiment of this application, the fixing sleeve 30 includes a first plate 31, a connecting plate 35, and a second plate 32 connected in sequence. The first plate 31, the connecting plate 35, and the second plate 32 form a U-shaped groove, which is used to accommodate the two side plates 11 of the terminal body 10. A first buckle plate 33 is also connected to the first plate 31. The first buckle plate 33 is provided with a buckle 331. The first buckle plate 33 is bent relative to the first plate 31 and abuts against the edge of the side plate 11. A second buckle plate 34 is also connected to the second plate 32. The second buckle plate 34 is provided with a buckle hole 341. The second buckle plate 34 is bent relative to the second plate 32 and covers the outside of the first buckle plate 33 so that the buckle 331 cooperates with the buckle hole 341.

[0072] The U-shaped channel is formed by bending a metal sheet. When the U-shaped channel wraps around the outside of the terminal body 10, its inner wall is in close contact with the outer surface of the side plate 11. The rigid support restricts the outward deformation of the side plate 11 caused by the force of the elastic sheet 20. The first snap plate 33 and the second snap plate 34 refer to the extensions located at the ends of the first plate 31 and the second plate 32, respectively. They can be formed by bending. The first snap plate 33 and the second snap plate 34 extend from both ends of the U-shaped groove and are bent to form a fixed layer that is stacked on top of each other. The first snap plate 33 abuts against the edge of the side plate 11, and the second snap plate 34 covers the first snap plate 33 and forms an interlocking structure through the cooperation of the snap 331 and the snap hole 341. This clamps the two side plates 11 in the thickness direction, preventing the side plates 11 from expanding outward or misaligning due to repeated insertion and removal. This effectively prevents the side plates 11 from deforming during the insertion and removal process, ensuring stable contact pressure between the elastic sheet 20 and the plug 300, avoiding poor contact caused by the expansion of the side plates 11, and enabling them to withstand mechanical vibration and thermal stress under high voltage and high current conditions, thus meeting the requirements for high reliability connection.

[0073] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7In one embodiment of this application, a first fixing buckle 311 with its opening end facing the wiring portion 13 is provided on the surface of the first plate 31 of the fixing sleeve 30, and a second fixing buckle 321 with its opening end facing the wiring portion 13 is provided on the surface of the second plate 32. The two fixing buckles form a fixed connection with the insulating seat 200. The first fixing buckle 311 refers to a protruding structure stamped on the surface of the first plate 31, with its opening end facing the wiring portion 13. A hooked fastening portion is formed on the metal plate using a stamping process. The second fixing buckle 321 has the same structure and forming process as the first fixing buckle 311, and will not be described in detail here. The setting of the first fixing buckle 311 and the second fixing buckle 321 achieves multi-point fixing between the connecting terminal 100 and the insulating seat 200. The bidirectional fastening structure maintains stable contact pressure during insertion and removal, preventing the terminal from loosening due to external impact or temperature changes, and ensuring the long-term reliability of the contact interface during high-voltage and high-current transmission.

[0074] In one embodiment of this application, anti-misalignment ribs 313 are formed on the surfaces of both the first plate 31 and the second plate 32. The anti-misalignment ribs 313 extend along the length of the first plate 31 and are located at the top and bottom of the first fixing buckle 311, and are spaced apart from the first fixing buckle 311. The design of the anti-misalignment ribs 313 extending along the length of the first plate 31 ensures that they form linear contact with the corresponding guide groove of the insulating seat 200 during installation, which can avoid assembly errors and ensure that the operator can only complete the assembly in the correct direction; the double ribs form surface contact with the guide groove of the insulating seat 200, improving positioning accuracy; the spaced arrangement of the ribs and the buckle 331 forms a double fixing point, enhancing connection stability; the extended ribs also improve the bending strength of the plate, preventing plate deformation during installation from causing positioning failure.

[0075] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7In one embodiment of this application, the sides of the first plate 31 and the second plate 32 are bent to form a limiting bracket 36, and the edge of the side plate 11 is provided with a corresponding slot 113, in which the limiting bracket 36 is inserted. The limiting bracket 36 refers to a protruding structure formed on the side of the first plate 31 and the second plate 32 by a bending process, and the slot 113 refers to a recessed structure opened on the edge of the side plate 11. During assembly, the bracket is inserted into the slot 113 on the edge of the side plate 11, forming a two-way constraint in both the lateral and longitudinal directions. When external vibration or insertion / extraction force is applied to the terminal body 10, the contact surface between the limiting bracket 36 and the slot 113 generates a reaction force, preventing the fixing sleeve 30 from sliding relative to the side plate 11. Because the fitting depth and bending angle of the limiting bracket 36 and the slot 113 are designed, the wrapping force of the fixing sleeve 30 on the side plate 11 is evenly distributed, avoiding local stress concentration that could lead to structural deformation. The technical solution of this embodiment can effectively prevent the relative displacement between the fixing sleeve 30 and the terminal body 10 under the action of external force, ensure the stable contact pressure between the elastic sheet 20 and the plug 300, and avoid the problem of increased contact resistance or interruption of signal transmission caused by structural loosening.

[0076] like Figure 1 , 4 As shown in Figure 5, the connecting plate 35 can be disposed on the bottom surface of the first plate 31 and the second plate 32. In this case, the connecting plate 35 abuts against the edge of the bottom surface of the side plate 11. The two ends of the wiring plate 35 are respectively connected to the first plate 31 and the second plate 32 to form a U-shaped groove. The end of the first plate 31 away from the wiring plate 35 is connected to a first buckle plate 33, and the end of the second plate 32 away from the wiring plate 35 is connected to a second buckle plate 34. At this time, the side of the fixing sleeve 30 away from the wiring part 13 forms a plug interface 30. The plug-in member 300 can be inserted into the plug interface 30 along the extension direction of the connecting terminal and abut against the elastic piece 20 therein. Preferably, the first plate 31 is provided with two first buckle plates 33, which are respectively disposed at both ends of the length direction of the first plate 31; the second plate 32 is provided with two second buckle plates 34, which are respectively disposed at both ends of the length direction of the second plate 32.

[0077] like Figure 6 , 7The connecting plate 35 can also be located on the side of the fixing sleeve 30 away from the wiring part 13. In this case, the connecting plate 35 abuts against the side of the side plate 11 away from the wiring part 13. The two ends of the wiring plate 35 are respectively connected to the first plate body 31 and the second plate body 32 to form a U-shaped groove. The end of the first plate body 31 away from the wiring plate 35 is connected to the first buckle plate 33, and the end of the second plate body 32 away from the wiring plate 35 is connected to the second buckle plate 34. At this time, the side of the fixing sleeve 30 near the plug-in plate forms a plug-in interface 30, and the plug-in direction of the plug-in member 300 is set at an angle to the extension direction of the connecting terminal 100. At this time, the plug-in member 300 can be inserted into the plug-in area 27 from the plug-in interface 30 at the top of the fixing sleeve 300 or from the plug-in interface 30 at the bottom of the fixing sleeve.

[0078] Reference Figures 8 to 10 In one embodiment of this application, a connector 1000 includes an insulating base 200 and a connecting terminal 100, with the connecting terminal 100 fixed to the insulating base 200. The insulating base 200 is made of insulating material, typically plastic or resin, and is produced through injection molding. It provides external fixation and electrical isolation for the connecting terminal 100. The entire connecting terminal 100 is fixedly connected to the insulating base 200 via first fixing buckles 311 and second fixing buckles 321 on both sides of a fixing sleeve 30. After the connecting terminal 100 engages with the insulating base 200, the first fixing buckles 311 and second fixing buckles 321 undergo elastic deformation, preventing the connecting terminal 100 from detaching from the crimping portion. Correspondingly, the insulating base 200 also has an anti-disengagement buckle 210 at the end near the insertion area 27. The end of the fixing sleeve 30 abuts against the anti-disengagement buckle 210 to limit its movement, preventing the entire connecting terminal 100 from over-inserting into the insulating base 200 and separating from it. The insulating base 200 further restricts the outward deformation of the fixing sleeve 30 and the side plate 11 by enclosing the connecting terminal 100, maintaining the contact stability of the elastic arm 25. In high-voltage and high-current scenarios, multi-point contact reduces contact resistance, and the surrounding layout disperses current density, avoiding localized overheating. The insulating material isolates conductive components, preventing short-circuit risks.

[0079] This utility model also proposes a connector 1000, which includes an insulating base 200 and a connecting terminal 100. The specific structure of the connecting terminal 100 is as described in the above embodiments. Since this connector 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0080] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A connecting terminal, characterized in that, include: The terminal body includes two side plates and a wiring portion connected to one end of the two side plates, the two side plates being arranged opposite each other and spaced apart; Two elastic sheets, one of which is disposed on the inner side of the side plate, and the two elastic sheets surround each other to form an insertion area. Each elastic sheet is provided with multiple elastic arms, which are arranged in a circular manner, and at least part of the elastic arms extend toward the insertion area. A fixing sleeve is provided on the outside of the terminal body and fixed to the two side plates. The fixing sleeve is provided with a plug interface communicating with the plug area. The fixing sleeve is used to restrict the deformation of the two side plates in the direction away from the elastic sheet. The connector is inserted into the plug area from the plug interface and elastically abuts against the plurality of elastic arms.

2. The connection terminal as described in claim 1, characterized in that, The elastic sheet also includes a main body, and the elastic arm includes a plurality of first elastic arms and a plurality of second elastic arms, with the first elastic arms and the second elastic arms being spaced apart; the first elastic arm includes a first segment, a second segment and a third segment connected in sequence and arranged at an angle, and the second elastic arm includes a first segment and a second segment connected in sequence and arranged at an angle. The first segment is connected to the main body and extends toward the insertion area. The second segment extends away from the insertion area, and the third segment extends toward the insertion area. The area between the first segment and the second segment forms at least one contact point with the connector. A support point is formed between the second segment and the third segment to abut against the side plate.

3. The connection terminal as described in claim 2, characterized in that, The contact points formed by the plurality of first elastic arms and the plurality of second elastic arms are arranged at circumferential intervals. The support points formed by the multiple first elastic arms are distributed at circumferential intervals.

4. The connection terminal as described in claim 3, characterized in that, The first segment, the second segment, and the third segment all have a rounded transition. And / or, the extension lengths of the first segment, the second segment, and the third segment gradually decrease.

5. The connection terminal as described in claim 2, characterized in that, The elastic sheet also includes an elastic region located at the center of the main body, a plurality of elastic arms are arranged around the elastic region, and a plurality of spaced positioning notches are formed on the side of the main body. The inner surface of the side plate is provided with a plurality of spaced limiting buckles, which abut against the positioning notch or the side of the main body to limit the movement of the main body relative to the side plate. And / or, the main body is further provided with a plurality of rivet points, the plurality of rivet points surrounding the outer side of the elastic region, and the main body and the side plate are riveted and fixed by the rivet points.

6. The connecting terminal as described in any one of claims 1 to 5, characterized in that, The fixing sleeve includes a first plate, a connecting plate, and a second plate connected in sequence. The first plate, the connecting plate, and the second plate form a U-shaped groove, which is used to accommodate the two side plates of the terminal body. The first plate is also connected to a first buckle plate, which is provided with a buckle. The first buckle plate is bent relative to the first plate and abuts against the edge of the side plate. The second plate is also connected to a second buckle plate, which has buckle holes. The second buckle plate is bent relative to the second plate and covers the outside of the first buckle plate so that the buckle engages with the buckle holes.

7. The connection terminal as described in claim 6, characterized in that, A first fixing buckle is formed on the surface of the first plate, and the open end of the first fixing buckle is disposed facing the wiring part. A second fixing buckle is formed on the surface of the second plate, and the open end of the second fixing buckle is arranged facing the wiring part. The connecting terminal is fixedly connected to the insulating base via the first fixing buckle and the second fixing buckle.

8. The connection terminal as described in claim 7, characterized in that, The surfaces of the first plate and the second plate are also provided with anti-mistake ribs. The anti-mistake ribs extend along the length of the first plate and are located at the top and bottom of the first fixing buckle, and are spaced apart from the first fixing buckle.

9. The connection terminal as described in claim 6, characterized in that, The sides of the first plate and the second plate are also bent to form a limiting card platform, and the edge of the side plate is provided with a corresponding card groove, and the limiting card platform is inserted into the card groove.

10. The connection terminal as claimed in claim 6, characterized in that, The connecting plate is located on the bottom surface of the fixing sleeve, and the insertion interface is located on the side of the fixing sleeve away from the wiring part, so that the insertion direction of the insertion piece is parallel to the extension direction of the connecting terminal.

11. The connection terminal as claimed in claim 6, characterized in that, The connecting plate is located on the side of the fixing sleeve away from the wiring part, and the plug interface is located on the side of the fixing sleeve near the connecting plate, so that the plug insertion direction and the extension direction of the connecting terminal are set at an angle.

12. A connector, characterized in that, The connector includes an insulating base and a connecting terminal as described in any one of claims 1 to 11, wherein the connecting terminal is fixed to the insulating base.

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