Connector module and connector

Abstract

The utility model discloses a connector module and a connector. The connector module includes: an insulator; the two rows of terminals are arranged on the insulator and are opposite up and down, and each terminal is provided with an elastic cantilever; and the preloading piece is movably arranged on the insulator and is positioned between the elastic cantilevers of the two rows of terminals. And the preloading piece can be pushed by the inserted matching board card to move from the preloading position to the releasing position. When the pre-loading part is located at the pre-loading position, the pre-loading part expands the elastic cantilevers of the two rows of terminals outwards so as to increase the distance between the electric contact parts of the two rows of terminals and apply pre-loading force on the elastic cantilevers; when the pre-loading part is pushed to the release position, the pre-loading part is separated from the elastic cantilever, and the elastic cantilever is released and exerts preset contact force on the matching board card so as to be in reliable electric contact with the matching board card. According to the utility model, the residual end part of the differential signal terminal can be shortened, the impedance low point and insertion loss high-frequency resonance at the contact interface of the connector can be effectively avoided, and the signal integrity is improved.

Description

Technical Field

[0001] This utility model relates to a connector module and a connector including the connector module. Background Technology

[0002] In the prior art, connectors typically include a housing containing upper and lower rows of terminals. Each terminal has a resilient cantilever with an electrical contact at its end for electrical contact with a mating card inserted between the resilient cantilever arms of the two rows of terminals. In the prior art, to guide the mating card into the space between the resilient cantilever arms of the two rows of terminals, the terminals have obliquely extending residual ends from the electrical contacts. These residual ends define outwardly flared guide openings to facilitate smooth insertion of the mating card between the resilient cantilever arms of the two rows of terminals. In the prior art, the length of the residual ends of the terminals is relatively large, which can lead to low impedance points at the connector contact interface and high-frequency resonance of insertion loss, thus reducing the signal integrity of the connector. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a connector module is provided. The connector module includes: an insulator having a front side and a rear side opposite each other in a longitudinal direction; two rows of terminals mounted on the insulator and opposite each other in a height direction, each terminal having a resilient cantilever extending from the front side of the insulator; and a preload member movably mounted on the insulator and located between the resilient cantilever of the two rows of terminals. The preload member is movable along the longitudinal direction from a preloaded position to a released position under the push of a mating plate inserted between the resilient cantilever of the two rows of terminals, the resilient cantilever having an electrical contact portion at its end for electrical contact with the mating plate. When in the preloaded position, the preload member extends outward to open the elastic cantilever of the two rows of terminals, thereby increasing the distance between the electrical contacts of the two rows of terminals and applying a preload force to the elastic cantilever of the two rows of terminals; when pushed to the release position by the mating board, the preload member separates from the elastic cantilever of the two rows of terminals, the elastic cantilever is released and a predetermined contact force is applied to the mating board to ensure reliable electrical contact between the electrical contacts and the mating board.

[0005] According to an exemplary embodiment of the present invention, the connector module further includes: an elastic element, clamped between the preloaded member and the insulator, for resetting the preloaded member from the release position to the preloaded position.

[0006] According to another exemplary embodiment of the present invention, the elastic element is a helical spring, and the connector module includes a plurality of helical springs spaced laterally, the plurality of helical springs being axially compressed between the preload member and the insulator.

[0007] According to another exemplary embodiment of the present invention, a plurality of positioning blind holes are formed on the front side of the insulator, and the rear ends of the plurality of helical springs are respectively installed and positioned in the plurality of positioning blind holes.

[0008] According to another exemplary embodiment of the present invention, the elastic element is a corrugated spring sheet, and the connector module includes a single corrugated spring sheet, which is longitudinally pressed between the preload member and the insulator.

[0009] According to another exemplary embodiment of the present invention, a receiving groove extending laterally is formed on the front side of the insulator, and the corrugated spring is received and installed in the receiving groove of the insulator.

[0010] According to another exemplary embodiment of the present invention, an elastic buckle is formed on the corrugated spring sheet, and an engagement hole is formed on the insulator. The elastic buckle is inserted into and engaged in the engagement hole to engage the corrugated spring sheet to the insulator.

[0011] According to another exemplary embodiment of the present invention, a hook is formed on the preload member and a slot is formed on the insulator, the hook and the slot being movably engaged to allow the preload member to move relative to the insulator between the preload position and the release position but not to detach from the insulator.

[0012] According to another exemplary embodiment of the present invention, the preload member has a main body extending laterally and two ends respectively connected to the two ends of the main body. The main body of the preload member is located between the elastic cantilever arms of the two rows of terminals, and the hook is formed on the ends of the preload member.

[0013] According to another exemplary embodiment of the present invention, the hook includes a cantilever portion extending along the longitudinal direction and a protrusion formed at the end of the cantilever portion, the slot extending along the longitudinal direction and slidably engaging with the protrusion of the hook, such that the protrusion of the hook can move along the longitudinal direction in the slot.

[0014] According to another exemplary embodiment of the present invention, the preload member has a front side and a rear side opposite to each other in the longitudinal direction, and a positioning groove is formed on the front side of the preload member, the positioning groove extending in the transverse direction for positioning and accommodating the front end of the mating card.

[0015] According to another exemplary embodiment of the present invention, a strip-shaped protrusion extending laterally is formed on the rear side of the preload member, the strip-shaped protrusion being used to abut against the elastic member.

[0016] According to another exemplary embodiment of the present invention, the terminal further has an L-shaped fixing part and a welding foot, the L-shaped fixing part being connected between the elastic cantilever and the welding foot, the welding foot being exposed from the bottom of the insulator for welding to a circuit board.

[0017] According to another exemplary embodiment of the present invention, the connector module further includes: an upper injection molded body, which is injection molded onto the L-shaped fixing portion of the upper row of terminals in the two rows of terminals, such that the upper row of terminals and the upper injection molded body are formed as a single piece, and an upper mounting groove is formed on the insulator, wherein the upper injection molded body and the upper row of terminals are assembled into the upper mounting groove of the insulator.

[0018] According to another exemplary embodiment of the present invention, the connector module further includes: a lower injection molded body, which is injection molded onto the L-shaped fixing portion of the lower row of terminals in the two rows of terminals, such that the lower row of terminals and the lower injection molded body are formed as a single piece, and a lower mounting groove is formed on the insulator, wherein the lower injection molded body and the lower row of terminals are assembled into the lower mounting groove of the insulator.

[0019] According to another exemplary embodiment of the present invention, the elastic cantilever of the terminal also has a residual end extending from the electrical contact portion, the two rows of terminals including multiple pairs of differential signal terminals, the length of the residual end of the differential signal terminal being less than the length of the residual ends of the other terminals in the two rows of terminals besides the differential signal terminal.

[0020] According to another exemplary embodiment of the present invention, when the preloaded member is in the release position and the mating plate is not inserted between the elastic cantilever of the two rows of terminals, the distance between the electrical contacts of the two rows of terminals is a first distance, and the first distance is less than the thickness of the mating plate; when the preloaded member is in the preload position, the distance between the electrical contacts of the two rows of terminals is expanded by the preloaded member to a second distance greater than the first distance.

[0021] According to another exemplary embodiment of the present invention, the second spacing is equal to, slightly greater than or slightly less than the thickness of the mating plate, so as to reduce the insertion force of the mating plate into the elastic cantilever of the two rows of terminals.

[0022] According to another aspect of the present invention, a connector is provided. The connector includes: a housing; and the aforementioned connector module, which is mounted in the housing.

[0023] In the foregoing exemplary embodiments of the present invention, the preload member can increase the spacing between the electrical contacts of the upper and lower rows of terminals, allowing the mating card to be smoothly inserted between the electrical contacts of the two rows of terminals without the need for guidance of the residual ends of the terminals. Therefore, the present invention can shorten or eliminate the residual ends of the differential signal terminals, effectively avoiding the problems of low impedance points and high-frequency resonance of insertion loss at the connector contact interface, and improving the signal integrity of the connector.

[0024] Other objects and advantages of the present 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

[0025] Figure 1 A perspective view of a connector module according to an exemplary embodiment of the present invention is shown;

[0026] Figure 2 An exploded view of a connector module according to an exemplary embodiment of the present invention is shown;

[0027] Figure 3 Another exploded view of a connector module according to an exemplary embodiment of the present invention is shown;

[0028] Figure 4 Another exploded view of a connector module according to an exemplary embodiment of the present invention is shown;

[0029] Figure 5 Showing a longitudinal sectional view of a connector module according to an exemplary embodiment of the present invention;

[0030] Figure 6 Showing a plan sectional view of a connector module according to an exemplary embodiment of the present invention;

[0031] Figure 7 A perspective view of a connector module and mating board according to an exemplary embodiment of the present invention is shown.

[0032] Figure 8 This shows a planar sectional view of a connector module and a mating board according to an exemplary embodiment of the present invention, wherein the mating board has not yet been inserted and the preloaded component is in the preloaded position;

[0033] Figure 9This shows a planar sectional view of a connector module and a mating board according to an exemplary embodiment of the present invention, wherein the mating board has not yet been inserted and the preloaded component is in the released position;

[0034] Figure 10 Showing a planar sectional view of a connector module and mating board according to an exemplary embodiment of the present invention, wherein the preloaded element is in the released position;

[0035] Figure 11 Showing a planar sectional view of a connector module and mating board according to an exemplary embodiment of the present invention, wherein the preloaded member has been pushed to the release position by the mating board;

[0036] Figure 12 An exploded view of a connector module according to another exemplary embodiment of the present invention is shown. Detailed Implementation

[0037] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0038] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0039] According to a general technical concept of this utility model, a connector module is provided. The connector module includes: an insulator having a front side and a rear side opposite each other in the longitudinal direction; two rows of terminals mounted on the insulator and opposite each other in the height direction, each terminal having a resilient cantilever extending from the front side of the insulator; and a preload member movably mounted on the insulator and located between the resilient cantilever of the two rows of terminals. The preload member is capable of moving along the longitudinal direction from a preloaded position to a released position under the push of a mating plate inserted between the resilient cantilever of the two rows of terminals, the resilient cantilever having an electrical contact portion at its end for electrical contact with the mating plate. When in the preloaded position, the preload member extends outward to open the elastic cantilever of the two rows of terminals, thereby increasing the distance between the electrical contacts of the two rows of terminals and applying a preload force to the elastic cantilever of the two rows of terminals; when pushed to the release position by the mating board, the preload member separates from the elastic cantilever of the two rows of terminals, the elastic cantilever is released and a predetermined contact force is applied to the mating board to ensure reliable electrical contact between the electrical contacts and the mating board.

[0040] According to another general technical concept of the present invention, a connector is provided. The connector includes: a housing; and the aforementioned connector module, which is installed in the housing.

[0041] Figure 1 A perspective view of a connector module according to an exemplary embodiment of the present invention is shown; Figure 2 An exploded view of a connector module according to an exemplary embodiment of the present invention is shown; Figure 3 Another exploded view of a connector module according to an exemplary embodiment of the present invention is shown; Figure 4 Another exploded view of a connector module according to an exemplary embodiment of the present invention is shown; Figure 5 Showing a longitudinal sectional view of a connector module according to an exemplary embodiment of the present invention; Figure 6 Showing a plan sectional view of a connector module according to an exemplary embodiment of the present invention; Figure 7 A perspective view of a connector module and mating board 6 according to an exemplary embodiment of the present invention is shown. Figure 8 This shows a planar sectional view of a connector module and mating card 6 according to an exemplary embodiment of the present invention, wherein the mating card 6 has not yet been inserted and the preload member 3 is in the preload position; Figure 9 This shows a planar sectional view of a connector module and mating card 6 according to an exemplary embodiment of the present invention, wherein the mating card 6 has not been inserted and the preload 3 is in the released position; Figure 10Showing a planar sectional view of a connector module and mating board 6 according to an exemplary embodiment of the present invention, wherein the preloaded member 3 is in the released position; Figure 11 This shows a planar sectional view of a connector module and mating board 6 according to an exemplary embodiment of the present invention, wherein the preloaded member 3 has been pushed to the release position by the mating board 6.

[0042] like Figures 1 to 11 As shown, in an exemplary embodiment of this utility model, a connector module is disclosed. The connector module includes: an insulator 1, two rows of terminals 2, and a preload member 3. The insulator 1 has a front side and a rear side opposite each other in the longitudinal direction Y. The two rows of terminals 2 are mounted on the insulator 1 and are opposite each other in the height direction Z, each terminal 2 having a resilient cantilever 21 extending from the front side of the insulator 1. The preload member 3 is movably mounted on the insulator 1 and located between the resilient cantilever 21s of the two rows of terminals 2. The preload member 3 is movable from a preloaded position to a released position along the longitudinal direction Y under the push of a mating plate 6 inserted between the resilient cantilever 21s of the two rows of terminals 2. The resilient cantilever 21 has an electrical contact portion 21a at its end for electrical contact with the mating plate 6. When in the preloaded position, the preload member 3 outwardly expands the resilient cantilever 21s of the two rows of terminals 2 to increase the spacing between the electrical contact portions 21a of the two rows of terminals 2 and to apply a preload force to the resilient cantilever 21s of the two rows of terminals 2. When the mating board 6 is pushed to the release position, the preloaded member 3 separates from the elastic cantilever 21 of the two rows of terminals 2. The elastic cantilever 21 is released and a predetermined contact force is applied to the mating board 6 to ensure reliable electrical contact between the electrical contact part 21a and the mating board 6.

[0043] like Figures 1 to 11 As shown in the illustrated embodiment, the connector module further includes an elastic element 4, which is clamped between the preloaded element 3 and the insulator 1, for resetting the preloaded element 3 from the release position to the preloaded position.

[0044] like Figures 1 to 11 As shown in the illustrated embodiment, the elastic element 4 is a helical spring 4', and the connector module includes a plurality of helical springs 4' spaced apart in the transverse X direction. The plurality of helical springs 4' are axially compressed between the preload element 3 and the insulator 1.

[0045] like Figures 1 to 11 As shown in the illustrated embodiment, a plurality of positioning blind holes 14 are formed on the front side of the insulator 1, and the rear ends of a plurality of helical springs 4' are respectively installed and positioned in the plurality of positioning blind holes 14.

[0046] like Figures 1 to 11As shown in the illustrated embodiment, a hook 33 is formed on the preload member 3 and a slot 13 is formed on the insulator 1. The hook 33 and the slot 13 are movably engaged to allow the preload member 3 to move relative to the insulator 1 between a preload position and a release position, but not to detach from the insulator 1.

[0047] like Figures 1 to 11 As shown, in the illustrated embodiment, the preload member 3 has a main body 31 extending in the transverse direction X and two ends 32 respectively connected to the two ends of the main body 31. The main body 31 of the preload member 3 is located between the elastic cantilever 21 of the two rows of terminals 2, and the hook 33 is formed on the ends 32 of the preload member 3.

[0048] like Figures 1 to 11 As shown, in the illustrated embodiment, the hook 33 includes a cantilever portion 33a extending along the longitudinal direction Y and a protrusion 33b formed on the end of the cantilever portion 33a. The slot 13 extends along the longitudinal direction Y and slides into contact with the protrusion 33b of the hook 33, so that the protrusion 33b of the hook 33 can move along the longitudinal direction Y in the slot 13.

[0049] like Figures 1 to 11 As shown in the illustrated embodiment, the preload member 3 has a front side and a rear side opposite each other in the longitudinal direction Y. A positioning groove 301 is formed on the front side of the preload member 3. The positioning groove 301 extends in the transverse direction X and is used to position and accommodate the front end of the mating card 6.

[0050] like Figures 1 to 11 As shown in the illustrated embodiment, a strip-shaped protrusion 34 extending laterally X is formed on the rear side of the preload member 3, and the strip-shaped protrusion 34 is used to abut against the elastic member 4.

[0051] like Figures 1 to 11 As shown in the illustrated embodiment, terminal 2 also has an L-shaped fixing part 22 and a soldering foot 23. The L-shaped fixing part 22 is connected between the elastic cantilever 21 and the soldering foot 23. The soldering foot 23 protrudes from the bottom of the insulator 1 and is used for soldering to the circuit board.

[0052] like Figures 1 to 11 As shown in the illustrated embodiment, the connector module further includes an upper injection molded body 51, which is injection molded onto the L-shaped fixing portion 22 of the upper row of terminals 2, such that the upper row of terminals 2 and the upper injection molded body 51 are formed as a single piece. An upper mounting groove 11 is formed on the insulator 1, and the upper injection molded body 51 and the upper row of terminals 2 are assembled into the upper mounting groove 11 of the insulator 1.

[0053] like Figures 1 to 11As shown in the illustrated embodiment, the connector module further includes a lower injection molded body 52, which is injection molded onto the L-shaped fixing portion 22 of the lower row terminal 2 of the two rows of terminals 2, so that the lower row terminal 2 and the lower injection molded body 52 are formed as a single piece. A lower mounting groove is formed on the insulator 1, and the lower injection molded body 52 and the lower row terminal 2 are assembled into the lower mounting groove of the insulator 1.

[0054] like Figures 1 to 11 As shown, in the illustrated embodiment, the elastic cantilever 21 of terminal 2 also has a stubbing 21b extending from the electrical contact portion 21a. The two rows of terminals 2 include multiple pairs of differential signal terminals 2'. The length of the stubbing 21b of the differential signal terminals 2' is less than the length of the stubbing 21b of the other terminals 2 in the two rows of terminals 2, excluding the differential signal terminals 2'.

[0055] like Figures 1 to 11 As shown in the illustrated embodiment, when the preload member 3 is in the released position and the mating card 6 is not inserted between the elastic cantilever 21 of the two rows of terminals 2, the distance between the electrical contact portions 21a of the two rows of terminals 2 is a first distance d1, and the first distance d1 is less than the thickness d of the mating card 6. When the preload member 3 is in the preload position, the distance between the electrical contact portions 21a of the two rows of terminals 2 is expanded by the preload member 3 to a second distance d2 that is greater than the first distance d1.

[0056] like Figures 1 to 11 As shown, in the illustrated embodiment, the second spacing d2 can be equal to, slightly greater than, or slightly less than the thickness d of the mating card 6, in order to reduce the insertion force of the mating card 6 into the elastic cantilever 21 of the two rows of terminals 2.

[0057] like Figures 1 to 11 As shown in the illustrated embodiment, the preload member 3 increases the spacing between the electrical contacts 21a of the upper and lower rows of terminals 2, allowing the mating card 6 to be smoothly inserted between the electrical contacts 21a of the two rows of terminals 2 without the guidance of the residual ends 21b of the terminals 2. Therefore, this invention can shorten or eliminate the residual ends 21b of the differential signal terminals 2', effectively avoiding the problems of low impedance points and high-frequency resonance of insertion loss at the connector contact interface, and improving the signal integrity of the connector.

[0058] like Figures 1 to 11 As shown in the illustrated embodiment, shortening the length of the residual end portion 21b at the head of terminal 2 can reduce the parasitic capacitance and inductance of the residual end portion 21b, making the impedance closer to the target value, thereby improving impedance matching, reducing signal reflection, and improving signal transmission quality. By shortening the length of the residual end portion 21b, the resonant frequency can be changed, moving it away from the signal transmission frequency band, or the amplitude of the resonance can be reduced, thereby effectively suppressing high-frequency resonance, reducing insertion loss, and meeting the signal transmission efficiency requirements of 224G applications.

[0059] Figure 12 An exploded view of a connector module according to another exemplary embodiment of the present invention is shown. Figure 12 The connector module shown is Figures 1 to 11 The only difference between the connector modules shown is the elastic element 4.

[0060] like Figure 12 As shown, in the illustrated embodiment, the elastic element 4 is a wavy spring 4”, and the connector module includes a single wavy spring 4”, which is longitudinally Y-pressed between the preload element 3 and the insulator 1.

[0061] like Figure 12 As shown, in the illustrated embodiment, a receiving groove 104 extending laterally X is formed on the front side of the insulator 1, and the wavy spring piece 4” is received and installed in the receiving groove 104 of the insulator 1.

[0062] like Figure 12 As shown, in the illustrated embodiment, an elastic buckle 4a is formed on the corrugated spring 4”, and a connecting hole 1a is formed on the insulator 1. The elastic buckle 4a is inserted into and engaged in the connecting hole 1a to engage the corrugated spring 4” to the insulator 1.

[0063] In addition to the differences mentioned above Figure 12 Other technical features of the connector module shown are similar to Figures 1 to 11 The connector modules shown are basically the same and can be referenced. Figures 1 to 11 The connector module shown.

[0064] like Figures 1 to 12 As shown, in another exemplary embodiment of this utility model, a connector is also disclosed. The connector includes: a housing (not shown) and... Figures 1 to 12 The connector module is shown. The connector module is installed into the housing.

[0065] 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 structural or principle conflicts, and these changes should fall within the protection scope of this utility model.

[0066] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0067] While some embodiments of the general concept of this utility model have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of this utility model, the scope of which is defined by the claims and their equivalents.

[0068] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of this invention.

Claims

1. A connector module, characterized in that, include: An insulator (1) has a front side and a rear side opposite each other in the longitudinal direction (Y); Two rows of terminals (2) are mounted on the insulator (1) and are opposite each other in the height direction (Z), each terminal (2) having an elastic cantilever (21) extending from the front side of the insulator (1); and The preload element (3) is movably mounted on the insulator (1) and located between the elastic cantilever (21) of the two rows of terminals (2). The preload member (3) is capable of moving from the preload position to the release position along the longitudinal direction (Y) under the push of the mating plate (6) between the elastic cantilever (21) inserted into the two rows of terminals (2). The elastic cantilever (21) has an electrical contact portion (21a) at its end for electrical contact with the mating plate (6). When in the preloaded position, the preload member (3) extends outward to open the elastic cantilever (21) of the two rows of terminals (2), thereby increasing the distance between the electrical contact portions (21a) of the two rows of terminals (2) and applying a preload force to the elastic cantilever (21) of the two rows of terminals (2). When pushed to the release position by the mating board (6), the preload member (3) separates from the elastic cantilever (21) of the two rows of terminals (2), the elastic cantilever (21) is released and a predetermined contact force is applied to the mating board (6) to ensure reliable electrical contact between the electrical contact (21a) and the mating board (6).

2. The connector module according to claim 1, characterized in that, Also includes: An elastic element (4) is held between the preloaded element (3) and the insulator (1) for resetting the preloaded element (3) from the release position to the preloaded position.

3. The connector module according to claim 2, characterized in that: The elastic element (4) is a helical spring (4'), and the connector module includes a plurality of helical springs (4') spaced apart in the transverse (X) direction, the plurality of helical springs (4') being axially pressed between the preloaded element (3) and the insulator (1).

4. The connector module according to claim 3, characterized in that: A plurality of positioning blind holes (14) are formed on the front side of the insulator (1), and the rear ends of the plurality of helical springs (4') are respectively installed and positioned in the plurality of positioning blind holes (14).

5. The connector module according to claim 2, characterized in that: The elastic element (4) is a wave-shaped spring (4”), and the connector module includes a single wave-shaped spring (4”), which is longitudinally (Y) pressed between the preload element (3) and the insulator (1).

6. The connector module according to claim 5, characterized in that: A receiving groove (104) extending laterally (X) is formed on the front side of the insulator (1), and the wave-shaped spring piece (4”) is received and installed in the receiving groove (104) of the insulator (1).

7. The connector module according to claim 5, characterized in that: An elastic buckle (4a) is formed on the corrugated spring (4”), and an engagement hole (1a) is formed on the insulator (1). The elastic buckle (4a) is inserted into and engaged in the engagement hole (1a) to engage the corrugated spring (4”) to the insulator (1).

8. The connector module according to claim 1, characterized in that: A hook (33) is formed on the preload member (3), and a slot (13) is formed on the insulator (1). The hook (33) is movably engaged with the slot (13) to allow the preload member (3) to move relative to the insulator (1) between the preload position and the release position, but not to disengage from the insulator (1).

9. The connector module according to claim 8, characterized in that: The preload member (3) has a main body (31) extending in the transverse direction (X) and two ends (32) respectively connected to the two ends of the main body (31). The main body (31) of the preload member (3) is located between the elastic cantilever (21) of the two rows of terminals (2). The hook (33) is formed on the end (32) of the preload member (3).

10. The connector module according to claim 9, characterized in that: The hook (33) includes a cantilever portion (33a) extending along the longitudinal direction (Y) and a protrusion (33b) formed at the end of the cantilever portion (33a). The slot (13) extends along the longitudinal direction (Y) and slidably engages with the protrusion (33b) of the hook (33), such that the protrusion (33b) of the hook (33) can move along the longitudinal direction (Y) in the slot (13).

11. The connector module according to claim 9, characterized in that: The preloading member (3) has a front side and a rear side opposite each other in the longitudinal direction (Y). A positioning groove (301) is formed on the front side of the preloading member (3), and the positioning groove (301) extends in the transverse direction (X) for positioning and accommodating the front end of the mating card (6).

12. The connector module according to claim 11, characterized in that: A strip-shaped protrusion (34) extending in the transverse direction (X) is formed on the rear side of the preload member (3), the strip-shaped protrusion (34) being used to abut against the elastic member (4).

13. The connector module according to claim 1, characterized in that: The terminal (2) also has an L-shaped fixing part (22) and a welding foot (23), the L-shaped fixing part (22) being connected between the elastic cantilever (21) and the welding foot (23), the welding foot (23) being exposed from the bottom of the insulator (1) for welding to the circuit board.

14. The connector module according to claim 13, characterized in that, Also includes: The upper injection body (51) is injection molded onto the L-shaped fixing part (22) of the upper row terminal (2) of the two rows of terminals (2), so that the upper row terminal (2) and the upper injection body (51) are formed into a single piece. An upper mounting groove (11) is formed on the insulator (1), and the upper injection molded body (51) and the upper row of terminals (2) are assembled into the upper mounting groove (11) of the insulator (1).

15. The connector module according to claim 13, characterized in that, Also includes: The injection molding body (52) is injection molded onto the L-shaped fixing part (22) of the lower row terminal (2) of the two rows of terminals (2), so that the lower row terminal (2) and the injection molding body (52) are formed into a single piece. A lower mounting groove is formed on the insulator (1), and the lower injection molded body (52) and the lower row of terminals (2) are assembled into the lower mounting groove of the insulator (1).

16. The connector module according to claim 1, characterized in that: The elastic cantilever (21) of the terminal (2) also has a residual end (21b) extending from the electrical contact (21a), and the two rows of terminals (2) include multiple pairs of differential signal terminals (2'), the length of the residual end (21b) of the differential signal terminal (2') being less than the length of the residual end (21b) of the other terminals (2) in the two rows of terminals (2) except for the differential signal terminal (2').

17. The connector module according to any one of claims 1-16, characterized in that: When the preloaded component (3) is in the release position and the mating plate (6) is not inserted between the elastic cantilever (21) of the two rows of terminals (2), the distance between the electrical contact portions (21a) of the two rows of terminals (2) is a first distance (d1), and the first distance (d1) is less than the thickness (d) of the mating plate (6). When the preload member (3) is in the preload position, the distance between the electrical contact portions (21a) of the two rows of terminals (2) is expanded by the preload member (3) to a second distance (d2) greater than the first distance (d1).

18. The connector module according to claim 17, characterized in that: The second spacing (d2) is equal to, slightly greater than or slightly less than the thickness (d) of the mating plate (6) to reduce the insertion force of the mating plate (6) into the elastic cantilever (21) of the two rows of terminals (2).

19. A connector, characterized in that, include: case; and The connector module according to any one of claims 1-18 is installed in the housing.

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