A connector

Abstract

A connector includes a housing and a terminal assembly; the housing has a cavity; the terminal assembly is received in the cavity and includes a first terminal, the first terminal includes a first mating portion, a first connecting portion, a first mating beam extending from the first mating portion to the first connecting portion, and an insert block for the first terminal, the insert block includes an insert block frame, the insert block frame has a first passage configured to pass the first mating beam therethrough and a preloading portion supporting the first mating beam and applying a pre-pressure to the first mating beam. The connector reduces electrical stubs and ensures high electrical performance.

Description

Technical Field

[0001] This invention relates to the field of signal transmission, and more specifically to a connector. Background Technology

[0002] Typically, a connector includes two rows of conductive terminals. One end of each row of terminals serves as a connecting part and connects to the main circuit board. The other end of each row of terminals serves as a mating part and contacts and mates with the inserted male circuit board, thereby forming an electrical connection between the main circuit board and the male circuit board to transmit signals between them.

[0003] Currently, to ensure proper mating between the mating portion and the male circuit board during mating and to prevent damage to the mating portion, the mating portions of the conductive terminals in existing connectors are typically bent. Furthermore, after mating, the length from the contact point between the mating portion and the male circuit board to the free end of the mating portion is often excessive. This excessive length creates electrical stubs, which degrade the connector's electrical performance and thus reduce signal transmission capability. Additionally, the mating portions of the conductive terminals in existing connectors typically employ a traditional inverted hump bend, which leads to impedance mismatch, further reducing the connector's electrical performance. Summary of the Invention

[0004] The purpose of this invention is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0005] According to one aspect of the present invention, a connector is provided, comprising:

[0006] A housing having a cavity; and

[0007] A terminal assembly, housed within the cavity and including a first terminal, the first terminal including a first mating portion, a first connecting portion, and a first mating beam extending from the first mating portion to the first connecting portion.

[0008] The terminal assembly further includes a plug for the first terminal, the plug including a plug frame having a first channel and a preload portion.

[0009] The first channel is configured to allow the first mating beam to pass through, and

[0010] The preloaded part supports the first mating beam and applies preload to the first mating beam.

[0011] According to an exemplary embodiment of the present invention, the insert frame further has a first partition wall, and two adjacent first partition walls define the first channel.

[0012] According to another exemplary embodiment of the present invention, the insert frame further has a first through hole leading to the corresponding first channel, and the first mating part passes through the first through hole to reach the mating area where the first mating part contacts and engages with the inserted male circuit board.

[0013] According to another exemplary embodiment of the present invention, the first terminal further includes a first transition beam extending from the first mating beam to the first connecting portion.

[0014] According to another exemplary embodiment of the present invention, the first transition beam includes a first straight segment, an oblique segment, and a second straight segment extending sequentially from the first mating beam to the first connecting portion. The first straight segment is perpendicularly connected to the first mating beam, the oblique segment extends from the first straight segment into the interior of the cavity, and the second straight segment is arranged parallel to the first straight segment and perpendicularly connected to the first connecting portion.

[0015] According to another exemplary embodiment of the present invention, the angle between the oblique line segment and the first straight line segment is 135° to 139°.

[0016] According to another exemplary embodiment of the invention, the insert further includes an additional frame extending from the insert frame along a direction facing the inserted male circuit board, the additional frame having a second channel configured to allow the first straight segment to pass through and position the first straight segment.

[0017] According to another exemplary embodiment of the invention, the additional frame further has a second partition wall, with two adjacent second partition walls defining the second channel.

[0018] According to another exemplary embodiment of the invention, the additional frame has a lateral protrusion, and the additional frame is secured to the housing by receiving the lateral protrusion within a socket in the housing.

[0019] According to another exemplary embodiment of the present invention, the terminal assembly further includes a retainer for the first terminal, the retainer including a first fixing frame disposed above the insert and a second fixing frame disposed below the insert, the first fixing frame covering and fixing the first mating beam, and the second fixing frame covering and fixing the oblique segment.

[0020] According to another exemplary embodiment of the present invention, the first fixing frame has a mounting protrusion, and the first fixing frame is mounted on the plug frame by receiving the mounting protrusion in the mounting groove of the plug frame.

[0021] According to another exemplary embodiment of the present invention, the second fixing frame has an insert, and the second fixing frame is mounted on the housing by inserting the insert into a slot on the inner wall of the housing.

[0022] According to another exemplary embodiment of the present invention, the first mating portion protrudes as a whole toward the inserted male circuit board in a curved shape, the first mating portion including a coupling segment for capacitive coupling with the inserted male circuit board, the coupling segment being a straight segment, and the angle between the length direction of the coupling segment and the contact surface of the inserted male circuit board being 11° to 13°.

[0023] According to another exemplary embodiment of the present invention, the first mating portion further includes a connecting segment extending from the first mating beam toward the coupling segment and a free segment extending from the coupling segment toward the free end of the first mating portion, wherein the connecting segment and the free segment each form an angle with the coupling segment.

[0024] According to another exemplary embodiment of the present invention, the connector further includes a second terminal received in the cavity, the second terminal being independent of the terminal assembly, the second terminal including a second mating portion, the first mating portion and the second mating portion being arranged opposite to each other to define a mating area between the first mating portion and the second mating portion for contacting and engaging with the inserted male circuit board.

[0025] According to another exemplary embodiment of the present invention, the connector is configured such that, during assembly of the connector, the terminal assembly is inserted into the cavity from the front of the housing, while the second terminal is inserted into the cavity from the rear of the housing.

[0026] In the connector of the aforementioned exemplary embodiments of the present invention, the preloaded portion supports the first mating beam and applies a preload to the first mating beam in a direction away from the inserted male terminal circuit board, causing the first mating beam to generate an elastic bias force. This elastic bias force causes the first mating portion to elastically bias the inserted male terminal circuit board, thereby providing sufficient contact force for the contact between the first mating portion and the male terminal circuit board. This reduces the upward (i.e., in a direction away from the inserted male terminal circuit board) deflection of the first mating beam required to maintain the electrical connection between the first mating portion and the inserted male terminal circuit board. As a result, the length of the first mating portion between its contact point with the male terminal circuit board and its free end is reduced compared to the length without the preloaded portion. This reduces the electrical stub of the first terminal, thereby not degrading the electrical performance of the connector and ensuring high signal transmission capability.

[0027] Other objects and advantages of the invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. It should be understood that the drawings described below only relate to some embodiments of the present invention and are not intended to limit the invention, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a traditional terminal.

[0030] Figure 2 This is a schematic diagram of the structure of the first terminal according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the front part of the connector according to an embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram of the rear structure of the connector according to an embodiment of the present invention.

[0033] Figure 5 This is an exploded structural diagram of a connector according to an embodiment of the present invention.

[0034] Figure 6 This is a cross-sectional view of a connector according to an embodiment of the present invention.

[0035] Figure 7 The assembly process of the terminal assembly itself according to an embodiment of the present invention and the assembly process of assembling the assembled terminal assembly into the housing are shown.

[0036] Figure 8 This is a schematic diagram of the structure of the insert block according to an embodiment of the present invention.

[0037] Figure 9 This is a top view of the insert block according to an embodiment of the present invention.

[0038] Figure label:

[0039] 1. Housing; 11. Socket; 12. Slot; 2. Terminal assembly; 21. First terminal; 211. First mating part; 211a. Coupling section; 211b. Connecting section; 211c. Free section; 211d. Free end of the first mating part; 212. First mating beam; 213. First transition beam; 213a. First straight section; 213b. Oblique section; 213c. Second straight section; 214. First connecting part; 22. Insert block; 221. Insert block frame; 221a. First channel; 221b. Preload part; 221c. 1. Partition wall; 221d. First through hole; 221e. Mounting groove; 222. Additional frame; 222a. Second channel; 222b. Second partition wall; 222c. Lateral protrusion; 23. Fixer; 231. First fixing frame; 231a. Mounting protrusion; 232. Second fixing frame; 232a. Insert; 21'. Conventional terminal; 211'. Mating part of conventional terminal; 211a'. Coupling section of conventional terminal; 212'. Transition beam of conventional terminal; 3. Second terminal; 31. Second mating part; 4. Mating area. Detailed Implementation

[0040] To more clearly illustrate the objectives, technical solutions, and advantages of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the following description of the embodiments is intended to explain and illustrate the overall concept of the present invention and should not be construed as limiting the present invention. In the specification and drawings, the same or similar reference numerals refer to the same or similar parts or components. For clarity, the drawings are not necessarily drawn to scale, and some well-known parts and structures may be omitted from the drawings.

[0041] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The word “a” or “an” does not exclude multiple components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” “right,” “top,” or “bottom,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. When an element is said to be located “upper” or “lower” than another element, the element may be located “directly” above or below the other element, or there may be intermediate elements present.

[0042] like Figures 2 to 9 As shown, an embodiment of the present invention provides a connector. Generally, the connector includes a housing 1, a terminal assembly 2, and a second terminal 3. The housing 1 has a cavity; the terminal assembly 2 and the second terminal 3 are accommodated in the cavity; the terminal assembly 2 includes a first terminal 21, a plug 22 for the first terminal 21, and a retainer 23 for the first terminal 21. The specific components of the connector of the embodiment will now be described in detail with reference to the accompanying drawings.

[0043] As shown in the corresponding figures, there can be multiple first terminals 21 and second terminals 3 of the present invention, and they can be arranged in a row. For ease of description and to highlight key points, the following description uses a single first terminal and second terminal as an example, but the present invention is not limited thereto, and the arrangement of terminals in a row is also within the protection scope of the present invention.

[0044] Reference Figure 2 The first terminal 21 includes, from right to left, a first mating portion 211, a first mating beam 212, a first transition beam 213, and a first connecting portion 214. The first mating portion 211 is used to contact and mate with the inserted male circuit board (not shown); the first mating beam 212 extends from the first mating portion 211 to the first connecting portion 214; the first transition beam 213 extends from the first mating beam 212 to the first connecting portion 214; and the first connecting portion 214 is used to connect with the main circuit board (not shown).

[0045] The first mating part 211 protrudes towards the inserted male circuit board in a curved shape. Figure 2 As can be seen, the first mating portion 211 is generally concave and curved. The first mating portion 211 includes a coupling section 211a for capacitive coupling with the inserted male circuit board, a connecting section 211b extending from the first mating beam 212 to the coupling section 211a, and a free section 211c extending from the coupling section 211a to the free end 211d of the first mating portion 211.

[0046] like Figure 2 As shown, the coupling segment 211a of the present invention is a straight segment, and the connecting segment 211b and the free segment 211c each form an angle with the coupling segment 211a. The coupling segment 211a is the segment in which a coupling effect is formed between the first mating part 211 and the inserted male circuit board. This coupling segment 211a does not necessarily have to be the segment in which the first mating part 211 and the inserted male circuit board are in complete contact; any segment in which a coupling effect is formed between the first mating part 211 and the inserted male circuit board can be considered a coupling segment. In an embodiment, the angle between the length direction of the coupling segment 211a and the contact surface of the inserted male circuit board (i.e., the surface of the male circuit board where the mating part 211 is in contact with the first mating part 211) is 11° to 13°, preferably 12°. Figure 1 The conventional terminal 21' shown typically employs a conventional inverted hump bend in its mating portion 211', with the coupling section 211a' being a curved segment. This often results in impedance mismatch, thereby degrading the connector's electrical performance. Compared to Figure 1 In contrast to conventional terminals 21', the first mating portion 211 of the first terminal 21 of the present invention arranges the coupling segment 211a as a straight segment and sets the angle between the length direction of the coupling segment 211a and the contact surface of the inserted male circuit board to 11° to 13°. This allows a coupling effect to be formed in the contact area between the coupling segment 211a and the inserted male circuit board, thereby improving the high-frequency impedance (e.g., 112G high-frequency impedance), reducing the impedance mismatch generated in conventional terminals 21', and thus improving the electrical performance of the connector.

[0047] The first transition beam 213 of the present invention specifically includes a first straight segment 213a, an oblique segment 213b, and a second straight segment 213c extending sequentially from the first mating beam 212 to the first connecting portion 214. The first straight segment 213a is connected to the first mating beam 212 substantially perpendicularly. The oblique segment 213b extends from the first straight segment 213a into the cavity. The second straight segment 213c is arranged parallel to the first straight segment 213a and is connected to the first connecting portion 214 substantially perpendicularly. The angle between the oblique segment 213b and the first straight segment 213a is 135° to 139°, preferably 137°; and the oblique segment 213b can be covered and fixed by the second fixing frame 232 of the fixer 23 (described below). Figure 1 The conventional terminal 21' shown has a transition beam 212' that is a straight segment running from top to bottom. Compared to Figure 1 The conventional terminal 21' in the present invention has a first transition beam 213, which has a diagonal segment 213b extending from the first straight segment 213a into the interior of the cavity, and the angle between the diagonal segment 213b and the first straight segment 213a is 135° to 139° and is covered and fixed by the second fixing frame 232 of the retainer 23. This arrangement can achieve a minimum covering volume, reduce the space occupied by the first terminal 21, and improve the crosstalk index ICN value of the connector.

[0048] The second terminal 3 is used in conjunction with the first terminal 21 of the terminal assembly 2. The second terminal 3 includes a second mating portion 31, with the first mating portion 211 and the second mating portion 31 arranged opposite to each other to define a mating area 4 between the first mating portion 211 and the second mating portion 31 for contacting and mating with the inserted male circuit board. The second terminal 3 of the present invention can be the lower row terminal of an off-the-shelf SFP 56G connector (i.e., a small pluggable connector with a transmission rate of 56Gbps). That is, the second terminal 3 can be independent of the terminal assembly 2. The plug 22 and the retainer 23 of the present invention only act on the first terminal 21 and do not act on the second terminal 3, i.e., they do not fix or apply pressure to the second terminal 3. The first terminal 21 of the terminal assembly 2 of the present invention can be used as an upper row terminal in conjunction with the lower row terminal of an off-the-shelf SFP 56G connector, and can share an off-the-shelf automated assembly line for SFP 56G connectors, and can also reuse other components of the SFP 56G connector, thereby reducing production and usage costs. During the assembly of the connector, terminal assembly 2 is inserted into the cavity from the front of housing 1, while the second terminal 3 is inserted into the cavity from the rear of housing 1, as follows. Figure 3 and Figure 4 As shown.

[0049] like Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, the plug 22 includes a plug frame 221 and an additional frame 222 extending from the plug frame 221 along the direction facing the inserted male circuit board.

[0050] The insert frame 221 has a first channel 221a, a preloading portion 221b, a first partition wall 221c, and a first through hole 221d, with the preloading portion 221b located within the first channel 221a. Clearly, in the case of multiple first terminals arranged in a row, there are multiple first channels 221a, first partition walls 221c, and first through holes 221d. Two adjacent first partition walls 221c define the first channel 221a. The first channel 221a is configured to allow the first mating beam 212 to pass through and to position the first mating beam 212. The preloading portion 221b supports the first mating beam 212 and applies a preload to the first mating beam 212 in a direction generally away from the inserted male terminal circuit board, causing the first mating beam 212 to generate an elastic bias force. This elastic bias force causes the first mating portion 211 to elastically bias the inserted male terminal circuit board, thereby ensuring good contact and mating between the first mating portion 211 and the inserted male terminal circuit board. The first through hole 221d leads to the corresponding first channel 221a, and the first mating part 211 passes through the first through hole 221d to reach the mating area 4 where the first mating part 211 contacts and mates with the inserted male circuit board. Figure 6As shown, the free segment 211c of the first mating part 211 can extend into the first through hole 221d.

[0051] The additional frame 222 has a second channel 222a and a second partition wall 222b. Clearly, in the case of multiple first terminals arranged in a row, there are multiple second channels 222a and multiple partition walls 222b. Two adjacent second partition walls 222b define the second channel 222a. The second channel 222a is configured to allow the first straight segment 213a to pass through and to position the first straight segment 213a. The additional frame 222 may have lateral protrusions 222c on both sides, and the additional frame 222 can be fixed to the housing 1 by receiving the lateral protrusions 222c within the insertion holes 11 of the housing 1.

[0052] Reference Figure 3 and Figure 5 As can be seen, the retainer 23 includes a first fixing frame 231 arranged above the insert block 22 and a second fixing frame 232 arranged below the insert block 22. The first fixing frame 231 covers and fixes the first mating beam 212, and the second fixing frame 232 covers and fixes the oblique segment 213b of the first transition beam 213. The first fixing frame 231 has a mounting protrusion 231a, and the first fixing frame 231 is mounted on the insert block frame 221 by receiving the mounting protrusion 231a in the mounting groove 221e of the insert block frame 221. The second fixing frame 232 has an insert 232a on each side extending in the front-rear direction of the housing 1, and the second fixing frame 232 can be mounted on the housing 1 by inserting the insert 232a into the corresponding slot 12 on the inner wall of the housing.

[0053] Figure 7 The assembly process of the terminal assembly 2 itself and the assembly process of assembling the assembled terminal assembly 2 into the housing 1 are shown. Figure 7As shown, when assembling the terminal assembly 2, the first mating beam 212 and the oblique segment 213b of the first transition beam 213 are first covered and fixed with the first fixed frame 231 and the second fixed frame 232, respectively. Then, the second channel 222a of the additional frame 222 of the insert block 22 is aligned with and accommodates the first straight segment 213a of the first transition beam 213. Next, the insert block 22 is moved upward as a whole. During the movement, the first channel 221a of the insert block frame 221 accommodates the first mating beam 212. The preloaded part 221b in the first channel 221a gradually supports the first mating beam 212, making the first mating beam 212... The first mating beam 212 is deflected upwards, which applies a pre-pressure upwards to the first mating beam 212, causing it to generate a downward elastic bias force. This causes the first mating part 211 to be elastically biased downwards against the inserted male circuit board. At the same time, the first through hole 221d of the insert frame 221 also passes through the first mating part 211, leaving most of the connecting section 211b and part of the free section 211c inside the first through hole 221d, while the coupling section 211a of the first mating part 211 is exposed below the outside of the first through hole 221d. At this point, the terminal assembly 2 is assembled. Then, the assembled terminal assembly 2 is inserted into the cavity of the housing 1 from the front, thus completing the assembly of the terminal assembly 2 inside the housing 1. It can be seen that the covered first terminal 21 is not directly (immediately) inserted into the housing 1, but is first assembled with the insert 22, and then inserted into the housing 1 together.

[0054] In an embodiment of the invention, the preloading portion 221b positions the first mating beam 212 higher than its natural position, causing the first terminal 21 to generate an elastic bias force. This elastic bias force ensures the stability of the first terminal 21's springback and provides sufficient contact force for the contact between the first mating portion 211 and the male circuit board (e.g., contact with the male circuit board's plug-in head). This reduces the upward (i.e., along the direction away from the inserted male circuit board) deflection of the first mating beam 212 required to maintain the electrical connection between the first mating portion 211 and the inserted male circuit board. Consequently, the length of the first mating portion 211 between its contact point with the male circuit board and its free end 211d is reduced compared to its length without the preloading portion, thereby reducing the electrical stub length of the first terminal 21. The number of stubs is reduced compared to when there is no preload section, so the electrical performance of the connector is not reduced and high signal transmission capability is ensured. In addition, since the deflection of the first mating part 211 is reduced, it is ensured that the free end 211d of the first mating part 211 (also referred to as the head of the first terminal 21) does not reach and contact the lower surface of the housing 1, thereby avoiding the risk that the free end 211d will be forced to penetrate the housing 1 due to the insertion of the male terminal circuit board.

[0055] In summary, compared with existing connectors (such as SFP 56G connectors), the connector of the present invention can effectively achieve high-speed signal transmission, such as the effective transmission of 112Gbps PM4 / 56Gbps NRZ (non-return-to-zero) signals; and can achieve compatibility with various public-side circuit boards (such as 10G / 28G / 56G optical module circuit boards); in addition, it can be used with the lower row terminals of readily available connector machines (such as SFP 56G connectors) and their automated assembly lines, thereby greatly reducing production and usage costs.

[0056] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing any conflict in structure or principle.

[0057] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate examples of the invention and should not be construed as limiting the invention. The dimensions and proportions in the drawings are merely illustrative and should not be construed as limiting the invention.

[0058] The above embodiments are merely illustrative of the principles and structure of the present invention and are not intended to limit the present invention. Those skilled in the art should understand that any changes and modifications made to the present invention without departing from the overall concept are within the scope of the present invention. The scope of protection of the present invention should be determined by the scope defined in the claims of this application.

Claims

1. A connector, comprising: The housing (1) has a cavity; and Terminal assembly (2), which is housed in the cavity and includes a first terminal (21), the first terminal (21) including a first mating portion (211), a first connecting portion (214) and a first mating beam (212) extending from the first mating portion (211) to the first connecting portion (214). The terminal assembly (2) further includes a plug (22) for the first terminal (21), the plug (22) including a plug frame (221) having a first channel (221a) and a preload portion (221b). The first channel (221a) is configured to allow the first mating beam (212) to pass through, and The preloading part (221b) supports the first mating beam (212) and applies preload to the first mating beam (212). The first terminal (21) further includes a first transition beam (213) extending from the first mating beam (212) to the first connecting portion (214). The first transition beam (213) includes a first straight segment (213a), an oblique segment (213b), and a second straight segment (213c) extending sequentially from the first mating beam (212) to the first connecting portion (214). The first straight segment (213a) is perpendicularly connected to the first mating beam (212), the oblique segment (213b) extends from the first straight segment (213a) into the interior of the cavity, and the second straight segment (213c) is arranged parallel to the first straight segment (213a) and perpendicularly connected to the first connecting portion (214). The terminal assembly (2) further includes a retainer (23) for the first terminal (21), the retainer (23) including a second fixing frame (232) arranged below the insert (22), the second fixing frame (232) covering around the oblique segment (213b) and fixing the oblique segment (213b).

2. The connector according to claim 1, characterized in that, The insert frame (221) also has a first partition wall (221c), with two adjacent first partition walls (221c) defining the first channel (221a).

3. The connector according to claim 1, characterized in that, The insert frame (221) also has a first through hole (221d) leading to the corresponding first channel (221a), and the first mating part (211) passes through the first through hole (221d) to reach the mating area (4) where the first mating part (211) contacts and engages with the inserted male circuit board.

4. The connector according to claim 1, characterized in that, The angle between the oblique line segment (213b) and the first straight line segment (213a) is 135° to 139°.

5. The connector according to claim 1, characterized in that, The insert (22) further includes an additional frame (222) extending from the insert frame (221) along the direction facing the inserted male circuit board, the additional frame (222) having a second channel (222a) configured to allow the first straight segment (213a) to pass through and to position the first straight segment (213a).

6. The connector according to claim 5, characterized in that, The additional frame (222) also has a second partition wall (222b), with two adjacent second partition walls (222b) defining the second channel (222a).

7. The connector according to claim 5, characterized in that, The additional frame (222) has a lateral protrusion (222c) and is fixed to the housing (1) by receiving the lateral protrusion (222c) in the insertion hole (11) of the housing (1).

8. The connector according to claim 1, characterized in that, The fixture (23) further includes a first fixing frame (231) arranged above the insert (22), the first fixing frame (231) covering the first mating beam (212) and fixing the first mating beam (212).

9. The connector according to claim 8, characterized in that, The first fixing frame (231) has a mounting protrusion (231a), and the first fixing frame (231) is mounted on the plug frame (221) by accommodating the mounting protrusion (231a) in the mounting groove (221e) of the plug frame (221).

10. The connector according to claim 8, characterized in that, The second fixing frame (232) has an insert (232a) and is mounted on the housing (1) by inserting the insert (232a) into a slot (12) on the inner wall of the housing (1).

11. The connector according to any one of claims 1 to 10, characterized in that, The first mating part (211) protrudes as a whole toward the inserted male circuit board in a curved shape. The first mating part (211) includes a coupling section (211a) for capacitive coupling with the inserted male circuit board. The coupling section (211a) is a straight section, and the angle between the length direction of the coupling section (211a) and the contact surface of the inserted male circuit board is 11° to 13°.

12. The connector according to claim 11, characterized in that, The first mating part (211) further includes a connecting section (211b) extending from the first mating beam (212) toward the coupling section (211a) and a free section (211c) extending from the coupling section (211a) toward the free end (211d) of the first mating part (211), wherein the connecting section (211b) and the free section (211c) each form an angle with the coupling section (211a).

13. The connector according to claim 1, further comprising a second terminal (3) received in the cavity, the second terminal (3) being independent of the terminal assembly (2), the second terminal (3) including a second mating portion (31), the first mating portion (211) and the second mating portion (31) being arranged opposite to each other to define a mating area (4) between the first mating portion (211) and the second mating portion (31) for contacting and engaging with the inserted male circuit board.

14. The connector according to claim 13, characterized in that, The connector is configured such that, when the connector is assembled, the terminal assembly (2) is inserted into the cavity from the front of the housing (1), and the second terminal (3) is inserted into the cavity from the rear of the housing (1).

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