Card cover assembly, card connector and electronic equipment

Abstract

A card cover assembly, a card connector and an electronic device, the card cover assembly comprising a shielding housing, a second terminal group integrally formed on the shielding housing, and a card withdrawing mechanism assembled on a fixing member, the shielding shell comprises a top plate, side walls and a card support moving space, the side walls are formed by bending two transverse sides of the top plate downwards, the card support moving space is positioned in the top plate and the side walls, and the card withdrawing mechanism comprises a push rod and an execution piece riveted on the shielding shell. The lower side parts of the side walls in the vertical direction are bent inwards and extend to a first elastic arm and a second elastic arm in the card support moving space, and one of the side walls is located above the first elastic arm to form a push rod mounting space for inserting the push rod; and the projection of the push rod mounting space and the projection of the first elastic arm in the vertical direction are mutually overlapped. The product size can be effectively reduced.

Description

Technical Field

[0001] This application relates to the field of electrical connectors, and more particularly to a card cover assembly, card connector, and electronic device. Background Technology

[0002] Patent application No. 201310424210.9, filed in 2013, discloses a card-type split connector, comprising a conductive terminal group mounted on a printed circuit board, a shielding shell soldered to the printed circuit board and forming a receiving space with the conductive terminal group, a tray for holding an electronic card and allowing insertion and removal within the receiving space, and a card ejection mechanism. The card ejection mechanism includes a push rod and a cam mechanism. The shielding shell includes a main body, first and second side portions extending downward from both sides of the main body, and a retaining portion formed by pressing downward from the side of the main body near the second side portion. A mounting portion for mounting the push rod is formed between the second side portion and the retaining portion. The push rod is movably fixed within the mounting portion. The cam component is directly riveted to the tail of the shielding shell by riveting. This patent is the first to disclose how assembling the card ejection mechanism onto the shielding shell eliminates the insulating body, thereby reducing the overall thickness of the card connector.

[0003] Subsequently, a stacked card connector emerged, in which another terminal group corresponding to the conductive terminal group on the printed circuit board is integrally formed on the shielding housing, and electronic card carrying spaces are provided on both the upper and lower sides of the card tray to correspond to the aforementioned two terminal groups. Patent publication number CN120280750A discloses a stacked card cover assembly, including a shielding housing, a fixing member welded to the shielding housing, and a card ejection mechanism assembled on the fixing member. The shielding housing includes a top plate and side walls formed by bending downward from both sides of the top plate laterally. The top plate includes a main plate portion and a recessed portion formed on one lateral outer side of the main plate portion. The fixing member includes a bonding weld portion connected to the recessed portion and a limiting outer wall formed by bending downward from the lateral outer side of the bonding weld portion. The card ejection mechanism includes a push rod and an actuator riveted to the shielding housing. The push rod is installed on the inner side of the limiting outer wall along the card insertion direction. By installing the push rod with a separate fixing component, the product's overall size can be reduced to some extent. However, the push rod and the spring are still arranged laterally, limiting the space for size reduction. Summary of the Invention

[0004] Therefore, it is necessary to provide a smaller card cover assembly, card connector, and electronic device.

[0005] To solve the above-mentioned technical problems, this application provides a card cover assembly, including a shielding housing, a second terminal group integrally formed on the shielding housing, and a card ejection mechanism. The shielding housing includes a top plate, side walls formed by bending downward from both sides of the top plate, and a card tray moving space located within the top plate and the side walls. The card ejection mechanism includes a push rod and an actuator riveted to the shielding housing. The lower portion of the side wall in the vertical direction is bent inward and extends into the card tray moving space to form a first elastic arm and a second elastic arm. One of the side walls forms a push rod mounting space above the first elastic arm for inserting the push rod. The push rod mounting space overlaps with the projection of the first elastic arm in the vertical direction.

[0006] Preferably, the bend between the sidewall and the top plate is defined as a first bend line, and a second bend line parallel to the first bend line is provided inside the first bend line. The top plate is torn downward around the second bend line to form a plurality of inner limiting pieces opposite to the sidewall, and the sidewall is torn inward to form a plurality of lower limiting pieces. The upper surface of the lower limiting pieces is not lower than the upper surface of the first elastic arm.

[0007] Preferably, the inner limiting piece, the lower limiting piece, the side wall, and the top plate surround the push rod mounting space extending along the insertion direction, and the top plate is located above the push rod mounting space and is torn towards the push rod mounting space to form a pressing spring piece that partially enters the push rod mounting space.

[0008] Preferably, the lower limiting piece includes a pair of lower limiting pieces formed by tearing on the sidewalls at both ends of the first elastic arm, and the inner limiting piece includes a pair of inner limiting pieces formed by tearing at positions corresponding to the lower limiting pieces.

[0009] Preferably, the front end of the top plate further includes a supporting portion formed by bending from the second bending line. The supporting portion includes a vertical portion formed by bending downward from the outer edge of the top plate, a horizontal portion formed by bending outward from the lower edge of the vertical portion, and a welded portion formed by bending downward from the outer edge of the horizontal portion. The lower limiting piece includes at least one lower limiting piece formed by tearing on the side wall at the rear end of the first elastic arm. The inner limiting piece includes at least one inner limiting piece formed by tearing at the rear end of the top plate. The vertical portion and the inner limiting piece are in the same plane, the horizontal portion and the lower limiting piece are in the same plane, the outer surface of the welded portion does not extend beyond the outer surface of the side wall, and a push rod passage space corresponding to the push rod installation space is formed above the horizontal portion.

[0010] Preferably, the second terminal group is formed on the shielding housing by an insulating body, the insulating body including a base portion and a tail portion extending downward from the rear end of the base portion.

[0011] Preferably, the top plate has a riveting hole at its rear end, and the actuator of the ejector mechanism is rotatably riveted and fixed in the riveting hole.

[0012] Preferably, the push rod includes a rod body, a linkage end located at the rear end of the rod body, a pressing end located at the front end of the rod body, and a pressing groove provided on the top surface of the rod body. A pressing spring on the top plate presses against the pressing groove. The actuator includes a shaft portion rotatably riveted into the riveting hole, a prying end formed on the lateral outer side of the shaft portion and interfering with the linkage end, and a push-card portion located on the lateral inner side of the shaft portion and located on the rear side of the card holder moving space. The push rod is inserted into the push rod mounting space from the card insertion end side along the card insertion direction.

[0013] To address the aforementioned technical problems, this application also provides a card connector, including the aforementioned card cover assembly, a first terminal module disposed opposite to the card cover assembly, and a card tray. The first terminal module is mounted and soldered onto a printed circuit board, the card cover assembly covers the first terminal module and is soldered and fixed onto the printed circuit board, and the card tray has a movable space located between the card cover assembly and the first terminal module.

[0014] Preferably, the card holder includes a middle plate, an outer frame formed around the periphery of the middle plate, and a first bearing space and a second bearing space enclosed by the outer frame on the upper and lower sides of the middle plate. The first bearing space corresponds to the second terminal group, and the second bearing space corresponds to the first terminal module. The bottom of the frame on the lateral side protrudes outward to form a limited protrusion that enters below the push rod mounting space and a clearance portion that is located above the limited protrusion. The push rod mounting space is located within the clearance portion.

[0015] Preferably, the limited protrusion has a groove structure, the first elastic arm and the second elastic arm are pressed in the groove structure, and the frame also has an elastic holding part extending into the first bearing space and the second bearing space.

[0016] To address the aforementioned technical problems, this application also provides an electronic device, including the aforementioned card connector, a device housing, and a printed circuit board disposed within the device housing. The card connector is mounted and soldered onto the printed circuit board. The device housing includes a middle frame, on which a card insertion slot is provided, and the card insertion slot corresponds to the card tray movement space.

[0017] The card cover assembly, card connector, and electronic device of this application both place the push rod mounting space and the first elastic arm on the lateral side of the shielding housing, and make the projections of the push rod mounting space and the first elastic arm in the vertical direction overlap. Compared with the existing structure that arranges the two in the lateral direction, the lateral width of the product can be effectively reduced. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional assembly diagram of the connector for the card in this application.

[0019] Figure 2 This is an exploded 3D view of the connector for the card in this application.

[0020] Figure 3 This is an exploded perspective view of the connector for the card in this application from another angle.

[0021] Figure 4 This is an exploded perspective view of the card cover component of this application.

[0022] Figure 5 for Figure 4 A magnified view of a portion of the dashed circle shown.

[0023] Figure 6 This is an exploded 3D view of the card cover assembly after removing the card ejection mechanism.

[0024] Figure 7 For along Figure 3 The cross-sectional view shown by the dashed line AA.

[0025] Figure 8 To remove the back edge of the circuit board Figure 1 The cross-sectional view shown by the dashed line BB.

[0026] Explanation of reference numerals in the attached figures Printed Circuit Board - 10; Board Body - 11; Solder Pad - 12; Card Holder - 20; Middle Plate - 21; Outer Frame - 22; Frame Body - 221; Limiting Protrusion - 222; Clearance Part - 223; Head - 224; Elastic Holding Part - 225; Slot Structure - 226; First Bearing Space - 201; Second Bearing Space - 202; First Terminal Module - 30; Plastic Part - 31; First Terminal Group - 32; Card Cover Assembly - A; Insulating Body - 40; Base Part - 41; Tail Part - 42; Opening - 43; Moving Terminal Mounting Part - 44; Terminal Deformation Space - 45; Shielding Housing - 50; Top Plate - 51; Tail Wall - 52; Side Wall - 53; First Elastic Arm - 531; Second Elastic Arm - 532; Inner Limiting Plate - 533; Lower Limiting Plate - 534; Pressing Spring - 535; Fixing Foot -536; Supporting part -54; Vertical part -541; Horizontal part -542; Welding part -543; Push rod passage space -544; Riveting hole -55; Push rod mounting space -60; Unlocking mechanism -70; Push rod -71; Rod body -711; Linkage end -712; Pressing end -713; Pressing groove -714; Actuator -72; Shaft part -721; Prying end -722; Push-locking part -723; Rivet-73; Detection component-80; Stationary terminal-81; Stationary terminal contact-811; Solder feet-812, 822; Moving terminal-82; Fixing part-821; Detection spring arm-823; Tensioning part-824; Detection contact-825; Second terminal group-90; Molded fixing part-91; Contact part-92; Hole structure-93; Solder foot-94; Surrounding part-95. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0028] This application is based on Figure 1 The Y direction is the vertical direction (the direction of inserting and retracting the card), the X direction is the horizontal direction, and the Z direction is the vertical direction above.

[0029] Please continue reading. Figures 1 to 3 As shown, the card connector of this application includes a first terminal module 30 mounted on a printed circuit board 10, a card cover assembly A covered by the first terminal module 30 and soldered to the printed circuit board 10, a card tray 20, and a card tray moving space S formed in the card cover assembly A and located above the first terminal module 30. The card tray 20 moves in the longitudinal direction within the card tray moving space S.

[0030] The first terminal module 30 includes a first terminal group 32 composed of a plurality of conductive terminals and a plastic part 31 that holds the first terminal group 32 together. The first terminal group 32 extends at least partially into the card tray moving space S to make electrical contact with the electronic card in the card tray 20. The first terminal module 30 is prior art and will not be described in detail here.

[0031] The printed circuit board 10 includes a board body 11 and a plurality of pads 12 disposed on the board body 11. The first terminal group 32 of the first terminal module 30 is welded and fixed to the pads 12 with the cover assembly A.

[0032] The card tray 20 includes a metal middle plate 21, an outer frame 22 formed around the middle plate 21, and a first bearing space 201 and a second bearing space 202 formed by the middle plate 21 and the outer frame 22 on the upper and lower sides of the middle plate 21. The first bearing space 201 and the second bearing space 202 are respectively used to store electronic cards, which are SIM cards or TF cards. The outer frame 22 includes a frame body 221 formed around the middle plate 21 and a head 224 formed at the front end of the frame body 221. The lower side of the frame body 221 on both sides of the horizontal direction protrudes outward to form a limiting protrusion 222. The upper part of the limiting protrusion 222 is cut out to form an avoidance part 223. The limiting protrusion 222 has a plurality of groove structures 226 on the horizontal outer side to facilitate the positioning of the card tray 20. The first carrying space 201 and the second space have elastic card holding parts 225 formed on the frame 221 on the front side of the space 202 to keep the electronic card inside from falling out.

[0033] Please continue reading. Figures 4 to 8 As shown, the card cover assembly A of this application includes a shielding housing 50, a second terminal group 90, an insulating body 40 on which the second terminal group 90 is formed on the inner surface of the shielding housing 50, a card ejection mechanism 70, and a detection component 80.

[0034] The shielding housing 50 includes a top plate 51, side walls 53 extending downward from both sides of the top plate 51, and a tail wall 52 extending downward from the rear end of the top plate 51. The card holder moving space S is limited by the top plate 51, the tail wall 52, and the side walls 53. The bend between the side wall 53 and the top plate 51 is defined as the first bending line L1. The side wall 53 is divided into an upper part near the top plate 51 and a lower part away from the top plate 51 in the vertical direction. The lower parts of the two side walls 53 are bent into the card holder moving space S to form a first elastic arm 531 and a second elastic arm 532, respectively. The first elastic arm 531 and the second elastic arm 532 are respectively pressed against the limited protrusion 221 of the card holder 20 and interfere with the groove structure 226 on the limited protrusion 221. The bottom of the sidewall 53 is also bent into the card holder moving space S to form a fixing foot 536. The fixing foot 536 is welded to the printed circuit board 10 for fixation and at the same time has the function of limiting the limited protrusion 221 on the lower side to prevent the card holder 20 from scratching the printed circuit board 10. A riveting hole 55 is provided on the lateral side of the rear end of the top plate 51.

[0035] One of the sidewalls 53 has at least one lower limiting piece 534 torn at the upper portion of the longitudinal ends of the first elastic arm 531 or the second elastic arm 532 toward the card holder moving space S. Preferably, the lower limiting piece 534 is close to the end of the riveting hole 55. In another embodiment, there can be two lower limiting pieces 534, that is, one lower limiting piece 534 is provided at each of the front and rear ends of the sidewall 53. The top plate 51 defines a second bending line L2 inside the first bending line L1. The top plate 51 is torn downward on the second bending line L2 to form a plurality of inner limiting pieces 533 opposite to the sidewall 53. Preferably, there is one inner limiting piece 533 at each of the front and rear ends. The upper portion of the sidewall 53, the lower limiting pieces 534, the top plate 51, and the inner limiting pieces 533 enclose a push rod mounting space 60 extending along the insertion direction. The top plate 51 is torn downward at the push rod mounting space 60 to form a pressing spring 535 that extends elastically into the push rod mounting space 60.

[0036] The top plate 51, located on both sides of the insertion end, is further bent downwards along the second bending line L2 to form supporting portions 54. Each supporting portion 54 includes a vertical portion 541 bent downwards from the top plate 51, a horizontal portion 542 bent outwards from the lower end of the vertical portion 541, and a welded portion 543 bent downwards from the outer end of the horizontal portion 542. The vertical portion 541 and the inner limiting piece 533 are in the same plane, the horizontal portion 542 and the lower limiting piece 534 are in the same plane, and the welded portion 543 and the side wall 53 are in the same plane. A push rod passage space 544 is defined above the horizontal portion 542 and outside the vertical portion 541, and this push rod passage space 544 corresponds to the push rod mounting space 60.

[0037] In one embodiment, the retaining part 54 may be omitted, and only the structure on the sidewall 53 needs to be retained.

[0038] The ejection mechanism 70 includes a push rod 71, a rivet 73, and an actuator 72 riveted to the rivet hole 55 via the rivet 73. The push rod 71 includes a rod body 711, a linkage end 712 located at the rear end of the rod body 711, a pressing end 713 located at the front end of the rod body 711, and a pressing groove 714 provided on the top surface of the rod body 711. The actuator 72 includes a shaft portion 721 rotatably riveted to the rivet hole 55, a prying end 722 formed on the lateral outer side of the shaft portion 721 and interfering with the linkage end 712, and a push portion 723 located on the lateral inner side of the shaft portion 721 and behind the card holder moving space S. The prying end 722 is attached to the upper surface of the shaft portion 721 on the inner surface of the top plate 51, and the push portion 723 is bent downward to avoid the insulating body 40 formed on the inner wall surface of the top plate 51. When the pressing end 713 of the push rod 71 presses backward, the linkage end 712 drives the prying end 722 of the actuator 72 to rotate backward around the shaft 721, thereby causing the push-lock part 723 to rotate forward and push the card holder 20 out.

[0039] The push rod 71 passes through the push rod passage space 544 of the holding part 54 from the card insertion end side and is inserted into the push rod mounting space 60. The inner limiting piece 533, the vertical part 541, and the inner wall surface of the side wall 53 restrict the position of the push rod 71 on both sides in the horizontal direction. The top plate 51, the lower limiting piece 534, and the horizontal part 542 limit the push rod 71 in the vertical direction. The pressing spring piece 535 presses against the pressing groove 714 on the rod body 711 to prevent the push rod from shaking. The first elastic arm 531 or the second elastic arm 532 is located below the push rod mounting space 60, that is, the projection of the first elastic arm 531 or the second elastic arm 532 and the push rod mounting space 60 in the vertical direction overlaps with each other.

[0040] Key references Figure 7 , Figure 8 As shown, after the card holder 20 is inserted into the card holder moving space S, the limited protrusion 222 of the card holder 20 enters below the push rod mounting space 60 and is limited by the lower limiting piece 534 and the horizontal part 542. At the same time, the groove structure 226 on the limited protrusion 222 is pressed by the first elastic arm 531 and the second elastic arm 532. The push rod 71 and the push rod mounting space 60 are accommodated in the clearance part 223 of the card holder 20.

[0041] The second terminal group 90 is formed by stamping a metal sheet to form a plurality of conductive terminals. Each conductive terminal includes a forming and fixing part 91, a contact part 92 extending from the forming and fixing part 91 into the card holder moving space S, a hole structure penetrating the forming and fixing part 91, and a solder leg 94 extending from the forming and fixing part 91 to the rear end. The conductive terminals are arranged in two columns longitudinally and three rows laterally. The solder leg 94 of the frontmost row of terminals extends from the front end of the conductive terminal, then extends around the lateral outer side of the other conductive terminals, and then bends downward to the rear end. The solder leg 94 is connected to the forming and fixing part 91 as a whole by a surrounding part 95.

[0042] The insulating body 40 integrally forms the second terminal group 90 on the inner surface of the top plate 51 of the shielding housing 50 so that the contact portion 92 of the second terminal group 90 corresponds to the first bearing space 201 of the card tray 20, and the contact portion 92 makes electrical contact with the electronic card in the first bearing space 201. The insulating body 40 includes a base portion 41 that wraps around the second terminal group 90, a terminal deformation space 45 that penetrates the base portion 41 and corresponds to the contact portion 92, and a tail portion 42 that extends downward from the rear end of the base portion 41. The tail portion 42 has a movable terminal mounting groove 44 on the side away from the card ejection mechanism 70, and an opening 43 is also provided inside the movable terminal mounting groove 44.

[0043] The surrounding portion 95 of the second terminal group 90 is formed within the insulating body 40, which can increase the strength of the insulating body 40 to a certain extent.

[0044] The detection component 80 includes a stationary terminal 81 and a moving terminal 82 that is connected / disconnected to the stationary terminal 81. The stationary terminal 81 includes a stationary terminal contact portion 811 erected behind the card holder moving space S and a solder leg 812 formed by bending downward from the stationary terminal contact portion 811. The stationary terminal 81 is integrally stamped and formed within the insulating body 40 along with the second terminal group 90. The insulating body 40 extends downward to form a reinforcing block (not labeled) supporting the front side of the stationary terminal contact portion 811. The opening 43 of the tail portion 42 faces the stationary terminal contact portion 811. The moving terminal 82 includes a fixing part 821 fixed in the moving terminal mounting groove 44, a welding leg 822 bent from the lower end of the fixing part 821, a detection spring arm 823 bent laterally outward from the fixing part 821 and extending towards the card holder moving space S, a tensioning part 824 bent backward from the detection spring arm 823, and a detection contact 825 formed by extending backward from the tensioning part 824 and then bending laterally outward. In the initial state, the detection contact 825 of the moving terminal 82 overlaps with the stationary terminal contact part 811 to form a passage. When the card holder 20 is pushed in, the rear end of the card holder 20 pushes the detection spring arm 823 forward, causing the detection contact to move forward and disengage from the stationary terminal contact part 811 to form a circuit break, thereby forming a switch function.

[0045] This application also includes an electronic device (not shown), which may be a mobile phone, tablet computer, robot, network card, etc. The electronic device includes a device housing and a card connector fixed inside the device housing. The device housing includes a middle frame, and a card insertion slot is provided on the middle frame corresponding to the front end of the card connector. The card insertion slot corresponds to the card tray moving space S to insert a card tray 20 carrying an electronic card from the card insertion slot into the card tray moving space.

[0046] The card cover assembly, card connector, and electronic device of this application both have the push rod mounting space 60 and the first elastic arm 531 located on the lateral side of the shielding housing 50, and the projections of the push rod mounting space 60 and the first elastic arm 531 in the vertical direction overlap. Compared with the existing structure that arranges the two in the lateral direction, the lateral width of the product can be effectively reduced.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention should be determined by the appended claims.

Claims

1. A card cover assembly, comprising a shielding housing, a second terminal group integrally formed on the shielding housing, and a card ejection mechanism, wherein the shielding housing includes a top plate, side walls formed by bending downward from both sides of the top plate, and a card holder moving space located within the top plate and the side walls, and the card ejection mechanism includes a push rod and an actuator riveted to the shielding housing, characterized in that, The lower portion of the sidewall bends inward in the vertical direction and extends to the first and second elastic arms within the card slot movement space. One of the sidewalls is located above the first elastic arm and forms a push rod mounting space for inserting the push rod. The push rod mounting space overlaps with the projection of the first elastic arm in the vertical direction.

2. The card cover assembly as described in claim 1, characterized in that, The bend between the sidewall and the top plate is defined as the first bend line. A second bend line parallel to the first bend line is provided inside the first bend line. The top plate is torn downward around the second bend line to form a plurality of inner limiting pieces opposite to the sidewall. The sidewall is torn inward to form a plurality of lower limiting pieces. The upper surface of the lower limiting pieces is not lower than the upper surface of the first elastic arm.

3. The card cover assembly as described in claim 2, characterized in that, The inner limiting piece, the lower limiting piece, the side wall, and the top plate surround the push rod mounting space extending along the insertion direction. The top plate is located above the push rod mounting space and is torn towards the inside of the push rod mounting space to form a pressing spring piece that partially enters the push rod mounting space.

4. The card cover assembly as described in claim 3, characterized in that, The lower limiting piece includes a pair of lower limiting pieces formed by tearing on the sidewalls at both ends of the first elastic arm, and the inner limiting piece includes a pair of inner limiting pieces formed by tearing at positions corresponding to the lower limiting pieces.

5. The card cover assembly as described in claim 3, characterized in that, The front end of the top plate also includes a support portion formed by bending from the second bending line. The support portion includes a vertical portion formed by bending downward from the outer edge of the top plate, a horizontal portion formed by bending outward from the lower edge of the vertical portion, and a welded portion formed by bending downward from the outer edge of the horizontal portion. The lower limiting piece includes at least one lower limiting piece formed by tearing on the side wall at the rear end of the first elastic arm. The inner limiting piece includes at least one inner limiting piece formed by tearing on the rear end of the top plate. The vertical portion and the inner limiting piece are in the same plane. The horizontal portion and the lower limiting piece are in the same plane. The outer surface of the welded portion does not extend beyond the outer surface of the side wall. A push rod passage space corresponding to the push rod installation space is formed above the horizontal portion.

6. The cover assembly as described in claim 4 or 5, characterized in that, The second terminal group is formed on the shielding housing by an insulating body, the insulating body including a base portion and a tail portion extending downward from the rear end of the base portion.

7. The card cover assembly as claimed in claim 4 or 5, characterized in that, The top plate has a riveting hole at its rear end, and the actuator of the card ejection mechanism is rotatably riveted and fixed in the riveting hole.

8. The card cover assembly as claimed in claim 7, characterized in that, The push rod includes a rod body, a linkage end located at the rear end of the rod body, a pressing end located at the front end of the rod body, and a pressing groove provided on the top surface of the rod body. A pressing spring on the top plate presses against the pressing groove. The actuator includes a shaft portion rotatably riveted into the riveting hole, a prying end formed on the lateral outer side of the shaft portion and interfering with the linkage end, and a push-card portion located on the lateral inner side of the shaft portion and located on the rear side of the card holder moving space. The push rod is inserted into the push rod mounting space from the card insertion end side along the card insertion direction.

9. A card connector, characterized in that, The device includes a card cover assembly as described in any one of claims 1-8, a first terminal module disposed opposite to the card cover assembly, and a card tray, wherein the first terminal module is mounted and soldered onto a printed circuit board, the card cover assembly is disposed above the first terminal module and soldered and fixed onto the printed circuit board, and the card tray has a movable space located between the card cover assembly and the first terminal module.

10. The card connector as claimed in claim 9, characterized in that, The card holder includes a middle plate, an outer frame formed around the periphery of the middle plate, and a first bearing space and a second bearing space enclosed by the outer frame on the upper and lower sides of the middle plate. The first bearing space corresponds to the second terminal group, and the second bearing space corresponds to the first terminal module. The bottom of the frame on the lateral side protrudes outward to form a limited protrusion that enters below the push rod mounting space and a clearance portion located above the limited protrusion. The push rod mounting space is located within the clearance portion.

11. The card connector as claimed in claim 10, characterized in that, The limited protrusion has a groove structure, and the first elastic arm and the second elastic arm are pressed in the groove structure. The frame also has an elastic holding part that extends into the first bearing space and the second bearing space.

12. An electronic device, characterized in that, The device includes a card connector as described in claim 9, a device housing, and a printed circuit board disposed within the device housing. The card connector is mounted and soldered onto the printed circuit board. The device housing includes a middle frame, on which a card insertion slot is provided. The card insertion slot corresponds to the card tray movement space.

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