Card cover assembly and card seat connector

Abstract

A card cover assembly comprises a shielding shell, a plurality of conductive terminals and an insulation body which enables the conductive terminals to be formed on the inner surface of the shielding shell, the shielding shell comprises a main body plate part and two side walls which are formed by bending and extending downwards from the two transverse sides of the main body plate part, and an elastic piece is integrally arranged on the outer surface of the main body plate part. And the elastic sheet comprises an elastic sheet base part which is welded and fixed on the main body plate part, an inclined arm which is formed by obliquely extending upwards from the elastic sheet base part, and a contact part which is formed at the tail end of the inclined arm. The utility model further comprises a card seat connector, and the technical scheme of the utility model reduces the manufacturing difficulty and saves the cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical connectors, and in particular to a cover assembly and a card connector. BACKGROUND

[0002] Patent No. 201922355710.7 of the People's Republic of China discloses a stacked card connector, which comprises a first terminal module welded on a printed circuit board, a shielding shell welded on the printed circuit board, a second terminal module integrally formed on the inner wall surface of the shielding shell, a receiving space formed between the printed circuit board and the shielding shell, and a card holder that can be inserted and pulled out in the receiving space. The shielding shell comprises a top wall and side walls that are formed by vertically bending downward from the lateral sides of the top wall. The card holder is provided with a first card accommodating space and a second card accommodating space on the front and back sides respectively to accommodate two electronic cards. The two electronic cards loaded in the first and second card accommodating spaces are respectively connected in conduction with the first and second terminal modules.

[0003] The existing mobile phones and other devices have replaced the traditional aluminum alloy back cover with a metal middle frame and a non-metal back cover to ensure smooth transmission of 5G signals. In some cases, the metal middle frame needs to be grounded. The conventional method is to connect the metal middle frame to the printed circuit board for grounding through a separate spring. If designed, it will occupy more circuit board space and complicate the assembly operation. Therefore, it is necessary to propose a more optimal and simpler middle frame grounding solution. CONTENT OF THE UTILITY MODEL

[0004] In view of this, it is necessary to provide a cover assembly and card connector that can ground the middle frame.

[0005] To solve the above technical problems, the present application provides a cover assembly, which comprises a shielding shell, a plurality of conductive terminals, and an insulating body that forms the conductive terminals on the inner surface of the shielding shell. The shielding shell comprises a main plate portion, two side walls that are formed by bending downward from the lateral sides of the main plate portion. An outer surface of the main plate portion is integrally provided with a spring. The spring comprises a spring base portion welded and fixed on the main plate portion, an inclined arm extending obliquely upward from the spring base portion, and a contact portion formed at the end of the inclined arm.

[0006] Preferably, the spring is formed by tearing the main plate portion and bending it. The spring base portion is connected to the main plate portion as a whole through a bending connection portion.

[0007] Preferably, the spring base portion and the main plate portion are bonded together and fixed by spot welding. An intermediate gap is formed in the middle part of the bending connection portion, which divides the bending connection portion into two parts.

[0008] Preferably, the main plate part under the base of the elastic sheet is torn to form a stress sheet with an opening facing the middle gap, the stress sheet is connected with the main plate part by bending, and the end of the stress sheet is parallel to the main plate part.

[0009] Preferably, the upper surface of the stress sheet is not higher than the lower surface of the main plate part, and the main plate part and the stress sheet are formed with gaps on both sides in the longitudinal direction for the flow of molten plastic.

[0010] Preferably, when the conductive terminal is formed on the shielding shell, the molten plastic fills the space between the base of the elastic sheet and the stress sheet, and the part filled with plastic connects the remaining part of plastic on both sides in the longitudinal direction to maintain better grip.

[0011] Preferably, the inclined arm of the elastic sheet extends obliquely to the upper rear side in the longitudinal direction.

[0012] Preferably, a card withdrawing mechanism is mounted on the cover assembly, one of the two side walls is torn inward to form a first elastic arm, the main plate part near the other side wall is torn downward to form a second elastic arm inward, the main plate part inside the side wall is torn downward to form a limiting sheet, the limiting sheet and the other side wall form a mounting space for mounting the card withdrawing mechanism, the card withdrawing mechanism includes a push rod, a lever and a rivet, the push rod is inserted into the mounting space, the bottom of the side wall in the mounting space is bent inward and then upward to form a barb for holding the push rod, the lever is fixed to the rear end of the main plate part by the rivet, and one end of the lever interferes with the rear end of the push rod to produce linkage.

[0013] To solve the above technical problems, the application also provides a card seat connector, which includes a first terminal module welded on a printed circuit board, the aforementioned cover assembly and a card holder, the cover assembly and the first terminal module define a card holder moving space, and the card holder moves in the card holder moving space.

[0014] Preferably, the card seat connector is installed in an electronic device, the electronic device includes a metal middle frame, the contact part of the elastic sheet on the shielding shell of the card seat connector is connected with the metal middle frame and grounded through the shielding shell.

[0015] The cover assembly and the card seat connector of the application set an elastic sheet on the shielding shell, and make the metal middle frame of the electronic device grounded through the shielding shell by connecting the metal middle frame with the printed circuit board through the elastic sheet. Compared with the traditional technical solution, the application is simpler, has lower cost, and saves the occupied space of the printed circuit board. Attached Figure Description

[0016] 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:

[0017] Figure 1 This is a three-dimensional assembly diagram of the card slot connector of this application;

[0018] Figure 2 This is a three-dimensional assembly diagram of the card cover components of this application;

[0019] Figure 3 This is a perspective view of the shielding housing of the card cover assembly in this application;

[0020] Figure 4 for Figure 3 A magnified view of a portion of the dashed circle shown;

[0021] Figure 5 This is a perspective view of the shielding housing of the card cover assembly of this application from another angle;

[0022] Figure 6 for Figure 5 A magnified view of a portion of the dashed circle shown;

[0023] Figure 7 This is a perspective view of the card tray of the card slot connector in this application;

[0024] Figure 8 For along Figure 2 The cross-sectional view shown by the dashed line AA.

[0025] Explanation of reference numerals in the attached figures

[0026] Printed circuit board - 10; Card tray - 20; Metal partition - 21; Plastic frame - 22; Card tray cover - 23; Sealing groove - 24; First card holding space - 25; Card limiting elastic element - 26; Card cover assembly - 30; Shielding shell - 31; Main body plate - 311; Avoidance cut - 3111; Tear opening - 3112; Side wall - 312; First elastic arm - 3121; Second elastic arm - 3122; Barb - 3123; Limiting plate - 3124; Welding foot - 3125; Riveting hole - 313; Insulating body - 32; Conductive terminal - 33; Spring piece - 34; Spring piece base - 341; Tilt arm - 342; Contact part - 343; Welding area - 344; Bending connection part - 345; Middle notch - 346; Lower force plate - 347; Unlocking mechanism - 40; Push rod - 41; Lever - 42; Rivet - 43. 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 X direction is the vertical direction (the direction of inserting and retracting the card), the Y direction is the horizontal direction, and the Z direction is the vertical direction above.

[0029] Please continue reading. Figure 1 As shown, the card holder connector of this application includes a first terminal module (not shown) soldered on a printed circuit board, a card cover assembly 30 covered on the first terminal module and soldered on the printed circuit board, a card tray moving space (not labeled) formed between the card cover assembly 30 and the first terminal module, a card tray 20 inserted and removed in the card tray moving space, and a card ejection mechanism 40 assembled on the card cover assembly 30.

[0030] Please continue reading. Figure 7 As shown, the card tray 20 includes a metal partition 21, a plastic outer frame 22 integrally formed around the periphery of the metal partition 21, a card tray cover 23 connected to the longitudinal outer end of the plastic outer frame 22, and a sealing groove 24 formed on the side of the plastic outer frame 22 near the card tray cover. The metal partition 21 has a first card-accepting space 25 and a second card-accepting space (not shown) on its front and back sides, respectively. Electronic cards (such as SIM cards, TF cards, etc.) are installed in the first card-accepting space 25 and the second card-accepting space, respectively. One end of the lower first card-accepting space 25 has a card-limiting elastic member 26 extending into the first card-accepting space 25. The portion of the card-limiting elastic member 26 protruding into the first card-accepting space 25 elastically holds the electronic card inserted into the first card-accepting space 25, thus fixing the lower electronic card under force and preventing it from falling off due to gravity.

[0031] Please continue reading. Figure 8 As shown, the card ejection mechanism 40 includes a push rod 41, a lever 42 for prying the card tray 20, and a rivet 43 for riveting the lever 42 to the card cover assembly 30. The push rod 41 is installed on one side of the card cover assembly 30. One end of the push rod 41 can be pushed from the outside using a tool along the card insertion direction. The other end of the push rod 41 interferes with the outer end of the lever 42 to drive the lever 42 to rotate around the rivet 43. The other end of the lever 42 abuts against the tail of the card tray 20 to pry the card tray 20 out along the card insertion direction. A sealing ring (not shown) is installed in the sealing groove 24 of the card tray 20, and the sealing ring is pressed and sealed against the middle frame of the electronic device.

[0032] Please continue reading. Figures 2 to 6As shown, the card cover assembly 30 of this application includes a shielding housing 31, a plurality of conductive terminals 33, and an insulating body 32 on which the plurality of conductive terminals 33 are formed on the inner wall surface of the shielding housing 31. The shielding housing 31 includes a flat main body plate 311, two side walls 312 formed by bending downward from both sides of the main body plate 311, a riveting hole 313 opened at the tail of the main body plate 311, and a spring piece 34 formed by tearing the main body plate 31 and then bending it.

[0033] The main body plate 311 has a plurality of clearance cuts 3111 along the longitudinal direction to avoid the conductive terminals 33. One of the clearance cuts 3111 located on the longitudinal front end side of the main body plate 31 forms a continuous tear 3112 by tearing in the longitudinal direction. One sidewall 312 is torn and bent toward the card holder moving space to form a first elastic arm 3121 that presses the card holder 20. The main body plate 311 located on the other sidewall 312 is torn downward to form a second elastic arm 3122 corresponding to the first elastic arm 3121. The main body plate 311 located outside the second elastic arm 3121 is bent downward to form at least one limiting piece 3124 opposite to its corresponding sidewall 312. The limiting piece 3124 and the sidewall 312 define an installation space for installing the push rod 41. The bottom of the sidewall 312 is bent inward and then upward to form a barb 3123 that protects the push rod 41. The bottom of both side walls 312 bends inward to form several weld feet 3125.

[0034] The push rod 41 is inserted into the installation space from the longitudinal front end. The two lateral sides of the push rod 41 are respectively limited by the side wall 312 and the limiting piece 3124, and the bottom side of the push rod 41 is limited by the barb 3123.

[0035] The structure of the conductive terminal 33 and the insulating body 32 is known technology and is not the focus of this application, so it will not be described in detail here.

[0036] The spring clip 34 is formed by tearing from the tear 3112 of the main body plate portion 311. Specifically, the spring clip includes a spring clip base 341 that is torn and folded from the tear 3112 and attached to the surface of the main body plate portion 311, an inclined arm 342 that extends obliquely upward and backward from the spring clip base 341, a contact portion 343 formed at the end of the inclined arm 342, and a bent connecting portion 345 connecting the spring clip base 341 and the main body plate portion 311. In addition to extending upward and backward, the inclined arm 342 can also extend obliquely upward in other directions depending on the internal layout of the electronic device, and is not limited to extending upward and backward. The end of the inclined arm 342 is slightly bent downward, and the contact portion is formed at the bend at the end of the inclined arm 342.

[0037] The bent connecting portion 345 is cut in the middle to form a central notch 346, dividing the bent connecting portion 345 into two parts. A stress-bearing piece 347 is torn in the main body plate portion 311 at the central notch 346. The opening of the stress-bearing piece 347 faces the central notch 346. The stress-bearing piece 347 is obliquely connected to the main body plate portion 311 and extends horizontally from the connection point. The upper surface of the stress-bearing piece 347 is not higher than the lower surface of the main body plate portion 311. During injection molding of the conductive terminal 33, the insulating body 32 fills between the spring base portion 341 and the stress-bearing piece 347. The molten plastic material can flow along the gap between the stress-bearing piece 347 and the main body plate portion 311. This is the design reason why the upper surface of the stress-bearing piece 347 is not higher than the lower surface of the main body plate portion 311, so that the plastic maintains the integrity of the connection. To ensure the stability of the spring piece 34, while the spring piece base 341 is attached to the main body plate 311, the spring piece base 341 is welded and fixed to the main body plate 311 by spot welding to form a welding area 344.

[0038] The card slot connector of this application is soldered onto the printed circuit board 10 inside the electronic device, and the contact portion 343 of the spring 34 abuts against the metal frame of the electronic device to conduct the metal frame and ground through the solder feet 3125 of the shielding housing 31.

[0039] It should be noted that the spring clip 34 of this application is torn from the main body plate 311 of the shielding shell 31, which can effectively reduce manufacturing costs, simplify the process, and save raw materials. However, the spring clip 34 can also be designed separately from the shielding shell 31, simply by spot welding the base 341 of the spring clip to the corresponding position of the main body plate 311.

[0040] The card cover assembly and card slot connector of this application use a spring contact 34 on the shielding housing 31 to conduct electricity to the metal frame of the electronic device, so that the metal frame is grounded through the shielding housing 31. Compared with the traditional technical solution that requires a separate connection between the metal frame and the printed circuit board 10 to ground via the spring contact 34, this application is simpler, lower in cost, and saves space occupied by the printed circuit board 10.

[0041] 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.

[0042] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A card cover assembly comprising a shield case, a plurality of conductive terminals, and an insulating body molding the conductive terminals on an inner surface of the shield case, the shield case comprising a main plate portion, two side walls formed by extending downwardly and bending from both sides of the main plate portion in the lateral direction, characterized in that, The outer surface of the main plate part is integrally provided with a spring sheet, which includes a spring sheet base welded to the main plate part, an inclined arm extending obliquely upward from the spring sheet base, and a contact part formed at the end of the inclined arm.

2. The card cover assembly of claim 1, wherein, The spring sheet is formed by tearing the main plate part and then bending it, and the spring sheet base is integrally connected to the main plate part through a bending connecting part.

3. The card cover assembly of claim 2, wherein, The spring sheet base is attached to the main plate part and fixed by spot welding, and a middle gap is formed in the middle part of the bending connecting part.

4. The card cover assembly of claim 3, wherein, The main plate part below the spring sheet base is torn to form a stress sheet with an opening facing the middle gap, and the stress sheet is connected to the main plate part by bending, with the end of the stress sheet parallel to the main plate part.

5. The card cover assembly of claim 4, wherein, The upper surface of the stress sheet is not higher than the lower surface of the main plate part, so that the main plate part and the stress sheet have a gap on both sides in the longitudinal direction for the flow of molten plastic.

6. The card cover assembly of claim 5, wherein, When the conductive terminal is formed on the shielding shell, the molten plastic fills the space between the spring sheet base and the stress sheet, and the part filled with plastic connects the remaining part of plastic on both sides in the longitudinal direction to maintain better grip.

7. The card cover assembly of claim 6, wherein, The inclined arm of the spring sheet extends obliquely upward and rearward.

8. The card cover assembly of claim 1, wherein, A card ejecting mechanism is mounted on the cover assembly, one of the two side walls is torn inward to form a first elastic arm; the main plate part near the other side wall is torn downward to form a second elastic arm inward, and the main plate part inside the side wall is torn downward to form a limiting sheet, and the limiting sheet and the other side wall form a mounting space for mounting the card ejecting mechanism; the card ejecting mechanism includes a push rod, a lever and a rivet, the push rod is inserted into the mounting space, the bottom of the side wall in the mounting space is bent inward and then upward to form a barb that holds the push rod, the lever is fixed to the rear end of the main plate part by the rivet, and one end of the lever interferes with the rear end of the push rod to produce linkage.

9. A card cage connector characterized by, A card cover assembly and a card holder as claimed in any one of claims 1-8 are welded to a first terminal module on a printed circuit board, and the card cover assembly and the first terminal module define a card holder movement space, and the card holder moves in the card holder movement space.

10. The card cage connector of claim 9, wherein, The card holder connector is installed in an electronic device, and the electronic device includes a metal middle frame, and the contact part of the spring sheet on the shielding shell of the card holder connector is connected to the metal middle frame and grounded through the shielding shell.

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