A card connector assembly

Abstract

This application discloses a card connector assembly comprising: a first terminal module having a first insulating body and a plurality of first terminals fixed to the first insulating body, each first terminal having a highest contact point extending upward into a mating space; a metal shell having at least a top plate and two side plates extending downward from the two side edges of the top plate, the metal shell being disposed above the first terminal module and used for fixing to a mating circuit board; and a second terminal module having a second insulating body and a plurality of second terminals fixed to the second insulating body, the second terminal module being coupled to the inner surface of the top plate, each second terminal having a lowest contact point extending downward into the mating space; a mating space being formed between the first terminal module and the second terminal module and an insertion port being formed at one end, wherein the highest contact point of the first terminal and the lowest contact point of the second terminal are offset along the insertion / removal direction of the mating module.

Description

Technical Field

[0001] This application relates to a card connector assembly. Background Technology

[0002] A SIM card (Subscriber Identification Module), also known as a user identification card or smart card, is required for the operation of GSM digital mobile phones. The SIM card stores the digital mobile phone customer's information, encryption keys, and the user's phonebook, enabling GSM network authentication of the customer and encryption of voice messages during calls.

[0003] With the development of technology, the requirements for miniaturization of card connector components are getting higher and higher. However, in the current design, due to the size standardization limitation of Nano SIM cards, the miniaturization of card connector components has basically reached its limit and it is difficult to make further progress.

[0004] Therefore, it is necessary to design a new card connector assembly to improve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this application is to provide a card connector assembly that enables a miniaturized design.

[0006] To achieve the above objectives, this application provides the following technical solution: A card connector assembly, comprising: The first terminal module is provided with a first insulating body and a plurality of first terminals fixed to the first insulating body. The first terminal module is used to be attached and fixed to the mating circuit board. The metal shell has at least a top plate and two side plates extending downward from the two sides of the top plate. The metal shell is placed above the first terminal module and is used to fix it to the mating circuit board. The second terminal module is provided with a second insulating body and a plurality of second terminals fixed to the second insulating body. The second terminal module is attached to the inner surface of the top plate. A docking space is formed between the first terminal module and the second terminal module, and an insertion port is formed at one end. Each first terminal has a highest contact point that protrudes upward into the docking space, and each second terminal has a lowest contact point that protrudes downward into the docking space. The highest contact points of the plurality of first terminals are arranged in a front row of highest contact points A1 located at the front end and a rear row of highest contact points A2 located at the rear end along the insertion direction of the docking module; the lowest contact points of the plurality of second terminals are arranged in a front row of lowest contact points B1 located at the front end and a rear row of lowest contact points B2 located at the rear end along the insertion direction of the docking module, characterized in that: Along the insertion direction of the docking module, the highest contact point A2 of the rear row is located in front of the lowest contact point B2 of the rear row, the lowest contact point B1 of the front row is located in front of the highest contact point A2 of the rear row, and the highest contact point A1 of the front row is located in front of the lowest contact point B1 of the front row.

[0007] Furthermore, it also includes: a docking module, wherein the upper surface of the docking module is recessed downward to form an upper receiving groove, and the lower surface of the docking module is recessed upward to form a lower receiving groove, wherein the lower receiving groove and the upper receiving groove are misaligned along the insertion direction of the docking module, so that the foremost point of the lower receiving groove is located in front of the foremost point of the upper receiving groove.

[0008] Furthermore, the docking module forms a limiting member at the rear end of the lower receiving slot along the insertion direction of the docking module, and the limiting member protrudes forward along the left-right direction near the middle position along the insertion direction of the docking module to form an elastic limiting part. Along the insertion direction of the docking module, the foremost end of the elastic limiting part is located in front of the rearmost end of the upper receiving slot.

[0009] Furthermore, the limiting member is formed as a fixed beam with its two ends fixed to the inner wall of the lower receiving slot in the left and right directions, and the limiting member is formed at the middle position in the left and right directions so as to be able to bend and deform elastically in the insertion and removal direction of the docking module. The limiting member forms an elastic displacement gap behind the insertion / removal direction of the docking module.

[0010] Furthermore, the upper surface of the docking module on the side where the upper slot is located is recessed downward at the front edge position of the docking module in the insertion direction to form a relief groove. The relief groove extends along the left and right direction over the full width of the docking module and forms a contact surface perpendicular to the insertion and removal direction of the docking module. The switch elastic terminal has a fixed section, an elastic wall section formed by bending and extending one end of the fixed section, a contact section formed by extending the free end of the elastic wall section, and a docking section formed by further extending the fixed section to correspond to electrical contact with the docking circuit board. At least a portion of the elastic wall segment protrudes into the docking space along the pull-out direction of the docking module and forms an abutting portion at the foremost end of the pull-out direction of the docking module. When the docking module is fully inserted into the docking space, at least a portion of the elastic wall segment is accommodated in the relief groove, and the abutting portion abuts against the abutting surface of the relief groove.

[0011] Furthermore, the elastic wall segment and the fixed segment are integrally connected by a meandering segment, which includes an arc-shaped segment and a gradually transitioning segment; The arc segment has a uniform width in both the vertical and horizontal directions; The width of the gradual transition section gradually decreases from the arc-shaped section to the elastic wall section in the vertical direction.

[0012] Furthermore, the elastic wall segment includes a first inclined segment, a second inclined segment, a bending transition segment, an extension transition segment, and the contact segment connected in sequence; The first inclined segment and the second inclined segment are positioned opposite to the fixed segment along the insertion and removal direction of the docking module; With the plane where the extension surface of the fixed segment is located as a reference, the inclination angle of the first inclined segment is smaller than that of the second inclined segment. The bending transition section is formed by bending the free end of the second inclined section back towards the fixed section along the insertion direction of the docking module; The extended transition section is formed by extending or tilting the free end of the bending transition section along the insertion direction of the docking module. The contact section is formed by extending or inclinedly extending the free end of the extended transition section further along the left and right direction toward the connection section between the elastic wall section and the fixed section; The contact section and the extension transition section are connected to form an L-shape or a V-shape.

[0013] Furthermore, the width of the first inclined segment, the second inclined segment, the bending transition segment, and the extension transition segment in the vertical direction is less than half of the arc segment.

[0014] Furthermore, the widths of the first inclined segment, the second inclined segment, the bending transition segment, and the extension transition segment are equal in the vertical direction.

[0015] Furthermore, a clearance notch is formed at a corner corresponding to the detour section at the front edge of the docking module along the insertion direction, and the clearance notch is formed below the clearance groove of the docking module. When the docking module is fully inserted into the docking space, the detour section and the projection of the docking module in the left-right direction at least partially overlap, and the gradual transition section cooperates with the clearance corner portion to make way.

[0016] Furthermore, it also includes: a card ejection mechanism, which is equipped with an operating lever and a card ejection lever. The operating lever is reciprocally slidably assembled on one side of the metal shell along the insertion and removal direction of the docking module, and the card ejection lever is pivotally connected to the front section of the top plate along the insertion direction of the docking module via a rotating component. When the docking module is fully inserted into the docking space, at least a portion of the retraction lever is accommodated in the clearance groove.

[0017] Furthermore, the rotating component passes through the ejector rod and the top plate, and the portion of the rotating component located below the ejector rod has a shape in which the diameter at the upper end is larger than the diameter at the lower end, so as to allow the docking module to be fully inserted into the docking space. The lower edge of the rotating component is welded and fixed to the docking circuit board.

[0018] Compared with the prior art, the beneficial effect of this application is that it enables miniaturized design. Attached Figure Description

[0019] Figure 1 This is a perspective view of the card connector assembly of this application, specifically showing a perspective view of the card connector assembly assembled onto a schematic mating circuit board.

[0020] Figure 2 yes Figure 1 The exploded perspective view of the card connector assembly shown in the figure specifically illustrates the three-dimensional schematic diagram after the docking module and the metal shell integrating the second terminal module are separated from the docking circuit board and the first terminal module.

[0021] Figure 3 This is a three-dimensional exploded view of the connector assembly of the card in this application.

[0022] Figure 4 This is a partial exploded perspective view of the connector assembly of the card in this application. Specifically, it shows the perspective view of the first terminal module and the mating circuit board after separation. It mainly shows the mating relationship between the mating module and the switch elastic terminal after the mating module is fully inserted into the mating space.

[0023] Figure 5 yes Figure 4 Enlarged view of the structure within the dashed box.

[0024] Figure 6 yes Figure 1 Top view of the card connector assembly.

[0025] Figure 7 It is self Figure 6 A cross-sectional view along the BB line.

[0026] Figure 8 This is another cross-sectional view of the card connector assembly of this application, with the cutting direction being the thickness direction of the card connector assembly.

[0027] Figure 9 yes Figure 8 The sectional view shown depicts the state when the docking module is pulled out.

[0028] Figure 10 This is a three-dimensional schematic diagram of the switch elastic terminal of the card connector assembly in this application.

[0029] Figure 11 yes Figure 10 Front view of the flexible terminal of the switch.

[0030] Figure 12 yes Figure 10 Top view of the flexible terminal of the switch. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] In this application description, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0034] Furthermore, for the sake of accuracy, all directions mentioned throughout this application shall be referred to as... Figure 1 For reference, the X-axis direction is defined as the insertion and removal direction of the docking module 4; the Y-axis direction is defined as the up and down direction (that is, the thickness direction), with the positive Y-axis being up; and the Z-axis direction is defined as the left and right direction.

[0035] Please refer to the reference. Figures 1 to 12 As shown, the card connector assembly of this application includes: a first terminal module 1, a metal shell 2, a second terminal module 3, a card ejection mechanism, and a docking module 4. The metal shell 2 has at least a top plate 21 and two side plates 22 extending downward from the two side edges of the top plate 21. In a preferred embodiment, the first terminal module 1 is an independent component, used to be attached and fixed to the docking circuit board 200. The metal shell 2 covers the first terminal module 1 and is used to fix it to the docking circuit board 200. The second terminal module 3 is integrated and fixed to the metal shell 2. A docking space (unlabeled) is formed between the first terminal module 1 and the second terminal module 3, and an insertion port (unlabeled) is formed at one end.

[0036] The first terminal module 1 includes a first insulating body 11 and a plurality of first terminals 12 fixed to the first insulating body 11. Each first terminal 11 includes a first terminal fixing section (unlabeled) integrally fixed to the first insulating body 11, a first terminal docking portion extending from the first terminal fixing section and protruding outside the first insulating body 11, corresponding to electrical contact with the docking circuit board 200, and a first terminal elastic contact section (unlabeled) extending from the other end of the first terminal fixing section and at least partially protruding into the docking space. The first terminal elastic contact section has a highest contact point 121 protruding upward into the docking space.

[0037] The second terminal module 3 includes a second insulating body 31 and a plurality of second terminals 32 fixed to the second insulating body 31. The second terminal module 3 is coupled to the inner surface of the top plate 21. Each second terminal 32 includes a second terminal fixing section (unlabeled) integrally fixed to the second insulating body 31, a second terminal mating portion extending from the second terminal fixing section and protruding outside the second insulating body 311, corresponding to electrical contact with the mating circuit board 200, and a second terminal elastic contact section (unlabeled) extending from the other end of the second terminal fixing section and at least partially protruding into the mating space. The second terminal elastic contact section has a contact lowest point (321) protruding downward into the mating space.

[0038] In a preferred embodiment, the highest contact points 121 of the plurality of first terminals 12 are arranged as a front row of highest contact points A1 at the front end and a rear row of highest contact points A2 at the rear end along the insertion direction of the docking module. The lowest contact points 321 of the plurality of second terminals 32 are arranged as a front row of lowest contact points B1 at the front end and a rear row of lowest contact points B2 at the rear end along the insertion direction of the docking module. Along the insertion direction of the docking module, the rear row of highest contact points A2 is located in front of the rear row of lowest contact points B2, the front row of lowest contact points B1 is located in front of the rear row of highest contact points A2, and the front row of highest contact points A1 is located in front of the front row of lowest contact points B1. Preferably, the arrangement of the first terminals 12 in this application conforms to the SIM card standard, and the arrangement of the second terminals also conforms to the SIM card standard.

[0039] Specifically, the docking module can be a card tray for carrying a SIM card. The upper surface of the docking module is recessed downwards to form an upper card slot 41. The lower surface of the docking module 4 is recessed upwards to form a lower card slot 42. The lower card slot 42 and the upper card slot 41 are misaligned along the insertion direction of the docking module 4, so that the foremost point of the lower card slot 42 is located in front of the foremost point of the upper card slot 41. Further, a limiting member 43 is formed at the rear end of the lower card slot 42 along the insertion direction of the docking module 4. The limiting member 43 protrudes forward along the insertion direction of the docking module 4 near the middle in the left-right direction, forming an elastic limiting portion 431. Along the insertion direction of the docking module 4, the foremost point of the elastic limiting portion 431 is located in front of the rear end of the upper card slot 41. The limiting member 43 is integrally formed as a fixed beam with both ends fixed to the inner wall of the lower receiving slot 42 in the left-right direction, and the limiting member 43 is formed at the middle position in the left-right direction so as to be elastically bent and deformed in the insertion and removal direction of the docking module 4. In a preferred embodiment, the limiting member 43 has an elastic displacement gap 432 formed behind it in the insertion and removal direction of the docking module 4.

[0040] In this application's card connector assembly, because the lower card slot 42 of the docking module 4 needs to form a retaining member 43 to accommodate the SIM card in case it falls out, the length required below the docking module 4 along the insertion / removal direction is longer. In this design, the lower card slot 42 and the upper card slot 41 are staggered along the insertion / removal direction of the docking module 4. Specifically, the lower card slot 42 is slightly ahead of the upper card slot 41 along the insertion direction of the docking module 4, so that there is space for the retaining member 43. Correspondingly, the highest contact point 121 of the multiple first terminals 12 and the lowest contact point 321 of the multiple second terminals 32 are staggered along the insertion / removal direction of the docking module, also to match the structural design of the docking module 4, so that there is space for the retaining member 43. This achieves overall miniaturization of the card connector assembly. In particular, the length of the card connector assembly along the insertion / removal direction of the docking module is optimized and reduced to the extreme.

[0041] Furthermore, the upper surface of the docking module 4 on the side containing the upper slot 41 is recessed downward at the front edge position of the docking module 4 in the insertion direction to form a relief groove 44. The relief groove 44 extends along the full width of the docking module 4 in the left-right direction, and the relief groove 44 forms an abutment surface 40 perpendicular to the insertion and removal direction of the docking module 4. The card connector assembly of this application also includes a switch elastic terminal 5. The switch elastic terminal 5 forms a fixed section 51, an elastic wall section 52 formed by bending and extending one end of the fixed section 51, a contact section 53 formed by extending the free end of the elastic wall section 52, and a docking section 54 corresponding to electrical contact with the docking circuit board, which further extends from the fixed section 51. The elastic wall section 52 at least partially protrudes into the docking space along the removal direction of the docking module 4 and forms an abutment portion located at the foremost front end in the removal direction of the docking module 4. When the docking module 4 is fully inserted into the docking space, at least a portion of the elastic wall segment 52 is accommodated in the relief groove 44, and the abutting part abuts against the abutting surface 40 of the relief groove 44.

[0042] By designing the clearance slot 44, the structural space of the lower card slot 42 and the upper card slot 41 being misaligned along the insertion and removal direction of the docking module 4 can be fully utilized. The clearance slot 44, together with the clearance switch elastic terminal 5, can further optimize and reduce the length of the card connector assembly along the insertion and removal direction of the docking module 4.

[0043] Please refer to the reference. Figures 3 to 5 and Figures 9 to 12 As shown, the elastic wall segment 52 and the fixed segment 51 are integrally connected by a meandering segment 55, which includes an arc-shaped segment 551 and a gradual transition segment 552. In a preferred embodiment, the arc-shaped segment 551 has a uniform width in the vertical direction. The width of the gradual transition segment 552 gradually decreases from the arc-shaped segment 551 towards the elastic wall segment 52 in the vertical direction.

[0044] The elastic wall segment 52 includes a first inclined segment 521, a second inclined segment 522, a bending transition segment 523, an extension transition segment 524, and the contact segment 53 connected in sequence. The first inclined segment 521 and the second inclined segment 522 are arranged opposite to the fixed segment 51 along the insertion and removal direction of the docking module 4. Preferably, with the plane containing the extension surface of the fixed segment 51 as a reference, the inclination angle of the first inclined segment 521 is smaller than that of the second inclined segment 522. The bending transition segment 523 is formed by bending the free end of the second inclined segment 522 back towards the fixed segment 51 along the insertion direction of the docking module 4. The extension transition segment 524 is formed by extending or inclinedly extending the free end of the bending transition segment 523 along the insertion direction of the docking module 4. The contact segment 53 is formed by further extending or inclinedly extending the free end of the extension transition segment 524 along the left-right direction towards the connection section between the elastic wall segment 52 and the fixed segment 51. In a preferred embodiment, the contact segment 53 and the extension transition segment 524 are connected to form an L-shape or a V-shape.

[0045] Furthermore, in a preferred embodiment, the widths of the first inclined segment 521, the second inclined segment 522, the bending transition segment 523, and the extension transition segment 524 in the vertical direction are less than half the width of the arc segment 551. The widths of the first inclined segment 521, the second inclined segment 522, the bending transition segment 523, and the extension transition segment 524 in the vertical direction are equal.

[0046] Through the structural design of the switch elastic terminal 5, on the one hand, it can cooperate with the docking module 4 to further optimize and reduce the length of the card connector assembly along the insertion and removal direction of the docking module 4. The special structural design of the switch elastic terminal 5 in this application can ensure that the elastic deformation of each functional position of the switch elastic terminal 5 is stable and controllable during the insertion and removal of the docking module 4 into the docking space. Moreover, the stress release of the switch elastic terminal 5 is uniform throughout the elastic deformation process, which can avoid the occurrence of plastic deformation of the switch elastic terminal 5. More importantly, it can effectively prevent the interference and collision between the detour section 55 of the switch elastic terminal 5 and the docking module 4.

[0047] Specifically, a clearance notch 401 is formed at a corner of the docking module 4 corresponding to the detour section 55 along the insertion direction. The clearance notch 401 is formed below the clearance groove 44 of the docking module 4. When the docking module 4 is fully inserted into the docking space, the detour section 55 and the projection of the docking module 4 in the left-right direction at least partially overlap. The gradient transition section 552 cooperates with the clearance notch 401 to make clearance. This further reduces the length of the card connector assembly along the insertion and removal direction of the docking module 4.

[0048] Please refer to the reference. Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, the card ejection mechanism of the card connector assembly in this application includes an operating lever 61 and an ejection lever 62. The operating lever 61 is slidably mounted on one side of the metal shell 2 along the insertion direction of the docking module 4. The ejection lever 62 is pivotally connected to the front section of the top plate 21 along the insertion direction of the docking module 4 via a rotating member 7. When the docking module 4 is fully inserted into the docking space, at least a portion of the ejection lever 62 is accommodated in the clearance groove 44. In a preferred embodiment, the rotating member 7 passes through the ejection lever 62 and the top plate 21, and the portion of the rotating member 7 located below the ejection lever 62 has a diameter at the upper end that is larger than the diameter at the lower end, thus allowing the docking module 4 to be fully inserted into the docking space. The lower edge of the rotating member 7 is correspondingly welded and fixed to the docking circuit board 200.

[0049] By implementing the card connector assembly of this application, the overall length of the card connector assembly along the insertion / removal direction of the docking module 4 can be fully optimized and reduced, and the overall structure of the card connector assembly is stable.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0051] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A card connector assembly, comprising: The first terminal module (1) is provided with a first insulating body (11) and a plurality of first terminals (12) fixed to the first insulating body (11). The first terminal module (1) is used to attach and fix to the mating circuit board. The metal shell (2) has at least a top plate (21) and two side plates (22) extending downward from the two sides of the top plate (21). The metal shell (2) covers the first terminal module (1) and is used to fix it to the mating circuit board. The second terminal module (3) is provided with a second insulating body (31) and a plurality of second terminals (32) fixed to the second insulating body (31). The second terminal module (3) is attached to the inner surface of the top plate (21). A docking space is formed between the first terminal module (1) and the second terminal module (3) and an insertion port is formed at one end. Each of the first terminals (12) has a contact highest point (121) that protrudes upward into the docking space, and each of the second terminals (32) has a contact lowest point (321) that protrudes downward into the docking space. The highest contact points (121) of a plurality of first terminals (12) are arranged to form a front row of highest contact points A1 at the front end and a rear row of highest contact points A2 at the rear end along the insertion direction of the docking module, and the lowest contact points (321) of a plurality of second terminals (32) are arranged to form a front row of lowest contact points B1 at the front end and a rear row of lowest contact points B2 at the rear end along the insertion direction of the docking module, characterized in that: Along the insertion direction of the docking module, the highest contact point A2 of the rear row is located in front of the lowest contact point B2 of the rear row, the lowest contact point B1 of the front row is located in front of the highest contact point A2 of the rear row, and the highest contact point A1 of the front row is located in front of the lowest contact point B1 of the front row.

2. The card connector assembly according to claim 1, wherein Also includes: The docking module (4) has an upper recessed groove (41) on its upper surface and a lower recessed groove (42) on its lower surface. The lower groove (42) and the upper groove (41) are misaligned along the insertion direction of the docking module (4) so ​​that the front end of the lower groove (42) is located in front of the front end of the upper groove (41).

3. The card connector assembly according to claim 2, wherein The docking module (4) forms a limiting member (43) at the rear end of the lower receiving slot (42) along the insertion direction of the docking module (4). The limiting member (43) protrudes forward along the insertion direction of the docking module (4) at a position close to the middle in the left-right direction to form an elastic limiting part (431). Along the insertion direction of the docking module (4), the front end of the elastic limiting part (431) is located in front of the rear end of the upper receiving slot (41).

4. The card connector assembly according to claim 3, wherein The limiting member (43) is formed as a fixed beam with its two ends fixed to the inner wall of the lower receiving slot (42) in the left and right directions, and the limiting member (43) is formed in the middle position in the left and right directions so that it can be elastically bent and deformed in the insertion and removal direction of the docking module (4). The limiting member (43) forms an elastic displacement gap (432) behind the insertion and removal direction of the docking module (4).

5. The card connector assembly according to claim 2, wherein The upper surface of the docking module (4) on the side where the upper receiving slot (41) is located is recessed downward at the front edge position of the docking module (4) in the insertion direction to form a relief groove (44). The relief groove (44) extends along the left and right direction over the full width of the docking module (4). The relief groove (44) forms a contact surface (40) perpendicular to the insertion and removal direction of the docking module (4). The switch elastic terminal (5) has a fixed section (51), an elastic wall section (52) formed by bending and extending one end of the fixed section (51), a contact section (53) formed by extending the free end of the elastic wall section (52), and a docking section (54) formed by further extending the fixed section (51) to correspond to electrical contact with the docking circuit board. The elastic wall segment (52) extends at least partially into the docking space along the pull-out direction of the docking module (4) and forms an abutment portion at the foremost end of the pull-out direction of the docking module (4). When the docking module (4) is fully inserted into the docking space, at least a portion of the elastic wall segment (52) is accommodated in the relief groove (44), and the abutment portion abuts against the abutment surface (40) of the relief groove (44).

6. The card connector assembly according to claim 5, wherein The elastic wall section (52) and the fixed section (51) are integrally connected by a meandering section (55), which includes an arc-shaped section (551) and a gradual transition section (552). The arc segment (551) has a uniform width in the vertical direction; The width of the gradual transition section (552) in the vertical direction gradually decreases from the arc section (551) to the elastic wall section (52).

7. The card connector assembly according to claim 6, characterized in that: The elastic wall segment (52) includes a first inclined segment (521), a second inclined segment (522), a bending transition segment (523), an extension transition segment (524), and the contact segment (53) connected in sequence. The first inclined segment (521) and the second inclined segment (522) are arranged opposite to the fixed segment (51) along the insertion and removal direction of the docking module (4); Based on the plane where the extension surface of the fixed segment (51) is located, the inclination angle of the first inclined segment (521) is smaller than that of the second inclined segment (522). The bending transition section (523) is formed by bending the free end of the second inclined section (522) back towards the fixed section (51) along the insertion direction of the docking module (4); The extended transition section (524) is formed by extending or tilting the free end of the bent transition section (523) along the insertion direction of the docking module (4); The contact section (53) is formed by extending or inclinedly extending the free end of the extension transition section (524) further along the left and right direction toward the connection section between the elastic wall section (52) and the fixed section (51); The contact section (53) is connected to the extension transition section (524) to form an L-shape or V-shape.

8. The card connector assembly according to claim 7, wherein: The width of the first inclined segment (521), the second inclined segment (522), the bending transition segment (523), and the extension transition segment (524) in the vertical direction is less than half that of the arc segment (551).

9. The card connector assembly according to claim 7, wherein: The first inclined segment (521), the second inclined segment (522), the bending transition segment (523), and the extension transition segment (524) have the same width in the vertical direction.

10. The card connector assembly according to claim 6, wherein: The docking module (4) forms a clearance notch (401) at a corner corresponding to the detour section (55) along the insertion direction at the front edge of the docking module (4). The clearance notch (401) is formed below the clearance groove (44) of the docking module (4). When the docking module (4) is fully inserted into the docking space, the detour section (55) and the projection of the docking module (4) in the left and right directions at least partially overlap, and the gradual transition section (552) cooperates with the yielding corner section (401) to make way.

11. The card connector assembly according to any one of claims 5 to 10, wherein Also includes: The card ejection mechanism (6) is provided with an operating lever (61) and a card ejection lever (62). The operating lever (61) can be reciprocated and slidably assembled on one side of the metal shell (2) along the insertion and removal direction of the docking module (4). The card ejection lever (62) is pivotally connected to the front end of the top plate (21) along the insertion direction of the docking module (4) via a rotating part (7). When the docking module (4) is fully inserted into the docking space, at least a portion of the ejector bar (62) is accommodated in the clearance groove (44).

12. The card connector assembly according to claim 11, wherein: The rotating component (7) passes through the ejector rod (62) and the top plate (21). The part of the rotating component (7) located below the ejector rod (62) has a shape in which the diameter of the upper position is larger than the diameter of the lower position so as to allow the docking module (4) to be fully inserted into the docking space. The lower edge of the rotating component (7) is welded and fixed to the docking circuit board (200).

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