A card connector assembly

Abstract

The application discloses a card connector assembly, comprising: a metal shell formed with a top plate and two side plates bent downward from two side edges of the top plate; a terminal assembly comprising an insulating body and a plurality of terminals, the insulating body comprising a base plate part and an end wall part integrally formed at a front end position of the base plate part along the insertion direction of a mating module, the base plate part being fixed to the inner side of the top plate; each of the terminals comprising an elastic contact arm capable of elastically contacting the mating module, the free end of the elastic contact arm forming a simply supported end part; a recess formed with the top plate; an insulating filling part combined in the recess, the simply supported end part corresponding to the inner surface of the insulating filling part in the up-down direction, when the elastic contact arm is pressed upward, the simply supported end part can slide on the inner surface of the insulating filling part to avoid the short circuit of the terminal and the metal shell.

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 subscriber's information, encryption keys, and the user's phonebook, enabling GSM network authentication and encrypting voice messages during calls. For example, current mobile phones require one SIM card slot in addition to the existing one, and at least one more SIM card for dual-SIM dual-standby configurations. The multiple card slots occupy a significant amount of space, making a reasonable and compact layout a challenge for the industry.

[0003] In the prior art, card connectors are generally used to fix to a circuit board inside an electronic device. They include an insulator, a metal housing covering the insulator, and several terminals fixed to the insulator. In some embodiments, the top plate of the metal housing is attached to one side of the insulator, and an insertion space is formed between the surface of the insulator away from the metal housing and the two side plates of the metal housing. Each terminal includes a resilient arm protruding from the insulator, the resilient arm including a contact portion protruding into the insertion space for elastic contact with the SIM card. The free end of the resilient arm can easily overlap with the metal housing, causing a short circuit.

[0004] Therefore, it is necessary to design a new card connector to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this application is to provide a terminal assembly and card connector that enables a thinner design and more effective soldering and fixing with the mating circuit board.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A card connector assembly, comprising:

[0008] The metal shell has a top plate and two side plates formed by bending down from the two sides of the top plate. The top plate and the two side plates together enclose a docking space and form an insertion port at one end.

[0009] The terminal assembly includes an insulating body and a plurality of terminals, wherein the insulating body includes a base plate portion and an end wall portion, the end wall portion is integrally formed at the front end position of the base plate portion along the insertion direction of the docking module, and the base plate portion is fixed to the inner side of the top plate.

[0010] Each terminal includes a fixed section embedded in the substrate portion and the end wall portion, an elastic contact arm integrally extended from the fixed section, and a mating foot extending from the fixed section at the end wall portion out of the insulating body. The middle position of the elastic contact arm protrudes into the mating space, and the free end of the elastic contact arm forms a simply supported end.

[0011] The recessed portion is formed by the inner surface of the top plate being recessed upwards and the corresponding outer surface being protruded upwards along the vertical direction;

[0012] An insulating filling part is integrally injection molded into the recessed part. The simply supported end corresponds to the inner surface of the insulating filling part in the vertical direction. When the elastic contact arm is pressed upward, the simply supported end can slide on the inner surface of the insulating filling part.

[0013] Furthermore, the inner surface of the insulating filling part is flush with the inner surface of the top plate, or the inner surface of the insulating filling part protrudes downward from the plane containing the inner surface of the top plate;

[0014] Along the vertical direction, the plane containing the inner surface of the insulating filling part is located above the plane containing the inner surface of the top plate.

[0015] Furthermore, the insulating filling portion and the substrate portion together form a recessed shape with an open front end and a downward opening along the pull-out direction of the docking module.

[0016] Furthermore, along the vertical direction, the projection of the insulating filling portion does not overlap with that of the substrate portion.

[0017] Furthermore, the top plate has a connecting hole formed through the recessed portion in the vertical direction, and the insulating filling portion includes a portion that fills into the connecting hole.

[0018] Furthermore, the insulating filling portion and the substrate portion are integrally formed.

[0019] Furthermore, along the vertical direction, the side of the simply supported end away from the insulating filler is not obstructed.

[0020] Furthermore, it also includes: a switch assembly having a fixed terminal portion and a moving terminal portion;

[0021] The fixed terminal portion is formed by bending the top plate in the vertical direction into the docking space from the front end position of the docking module in the insertion direction to form a cantilever shape;

[0022] The moving terminal is an independent terminal, including a retaining section fixed in the end wall, an elastic section formed by folding back one end of the retaining section along the width direction, and a contact section formed by extending the free section of the elastic section along the insertion direction of the docking module and bending it along the width direction. The contact section is in elastic contact with the front surface of the fixed terminal along the insertion direction of the docking module.

[0023] An insulating reinforcement portion is integrally formed on the inner surface of the substrate portion and is attached to the rear surface of the fixed terminal portion along the insertion direction of the docking module.

[0024] Furthermore, it also includes: a clearance hole, which is formed through the end wall portion along the insertion and removal direction of the docking module, the contact segment protruding forward through the clearance hole along the insertion direction of the docking module, and at least a portion of the contact segment protruding upward through the clearance hole in the vertical direction.

[0025] Furthermore, it also includes: an upper positioning port, which is formed by a downward recess of the outer surface of the front end of the substrate portion along the insertion direction of the docking module;

[0026] The lower positioning port is formed by an upward indentation of the inner surface of the front end of the substrate portion along the insertion direction of the docking module;

[0027] The end positioning port is formed by the outer surface of the upper end of the end wall portion being recessed inward along the pull-out direction of the docking module.

[0028] The fixed section includes a horizontal section extending along the insertion and removal direction of the docking module and a vertical section integrally connected to the front end of the horizontal section along the insertion direction of the docking module and extending downward in the vertical direction.

[0029] The upper surface of the front end of the horizontal segment along the insertion direction of the docking module protrudes into the upper positioning port;

[0030] The lower surface of the front end of the horizontal segment along the insertion direction of the docking module protrudes into the lower positioning port;

[0031] The outer surface of the upper end of the vertical segment protrudes into the end positioning opening.

[0032] Compared with the prior art, the beneficial effect of this application is that it can avoid short circuits caused by the connection between the terminals and the metal housing. Attached Figure Description

[0033] Figure 1 This is a three-dimensional schematic diagram of the card connector assembly of this application, specifically showing a three-dimensional schematic diagram when the docking module is inserted into the card connector assembly.

[0034] Figure 2This is a three-dimensional schematic diagram of the card connector assembly of this application, specifically showing a three-dimensional schematic diagram of the docking module before inserting the card connector assembly.

[0035] Figure 3 This is a partial exploded perspective view of the connector assembly of the card in this application.

[0036] Figure 4 yes Figure 3 A three-dimensional diagram viewed from another angle.

[0037] Figure 5 yes Figure 4 A further exploded perspective view of the card connector assembly shown.

[0038] Figure 6 This is a bottom view of the connector assembly of this application card, specifically showing the bottom view of the insulating body of the terminal assembly and the mating terminal assembly separated from the metal housing, and also showing the mating module.

[0039] Figure 7 yes Figure 1 The diagram shows a top view of a card connector assembly incorporating a docking module; the circuit board is not shown.

[0040] Figure 8 It is self Figure 7 Sectional view of line AA in the middle. Figure 8 The circuit board is shown in the image.

[0041] Figure 9 yes Figure 8 Enlarged view of the structure within the dashed box.

[0042] Figure 10 yes Figure 9 A variation of the above. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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 specifically defined as the width direction / left-right direction; the Y-axis direction is defined as the up-down direction, with the positive Y-axis being up; and the Z-axis direction is defined as the insertion / removal direction of the docking module, with the positive Z-axis being the insertion direction of the docking module.

[0047] Please refer to the reference. Figures 1 to 10 The image shows a card connector assembly disclosed in this application, comprising: a metal housing 1, a terminal assembly 2 fixed to the metal housing 1, and a mating terminal assembly 8. This application also schematically illustrates a docking module (i.e., a card tray for carrying electronic cards) that mates with the card connector assembly of this application.

[0048] Please refer to the reference. Figures 1 to 3 As shown, the metal shell 1 is formed by stamping and bending a metal sheet (such as stainless steel sheet), and has a top plate 11 and two side plates 12 formed by bending the two sides of the top plate 11 downwards. The top plate 11 and the two side plates 12 together form a docking space 10 and form an insertion port (not labeled) at one end.

[0049] The terminal assembly 2 includes an insulating body 21 and a plurality of terminals 22. The insulating body 21 includes a base plate portion 211 and an end wall portion 212, the end wall portion 212 being integrally formed at the front end of the base plate portion 211 along the insertion direction of the docking module. The base plate portion 211 is fixed to the inner side of the top plate 11. In a preferred embodiment of this application, the insulating body 21 and the metal housing 1 are integrally formed and fixed together. Of course, in other embodiments, the insulating body 21 can also be fixed to the metal housing 1 by means of assembly clips or the like. The plurality of terminals 22 are arranged in two rows along the insertion direction of the docking module, each row of terminals 22 having three terminals. Each terminal 22 includes a fixing section 221 embedded in the base plate portion 211 and the end wall portion 212, an elastic contact arm 222 integrally extended from the fixing section 221, and a docking foot 223 extending from the fixing section 221 at the end wall portion 212 out of the insulating body 21. The elastic contact arm 222 protrudes into the docking space 10 at its middle position for elastic electrical contact with the electronic card carried in the docking module 9. The free end of the elastic contact arm 222 forms a simply supported end 2221. The docking foot 223 is used for contact with the circuit board 7 inside the electronic device (see reference). Figure 8 (Illustrated in the diagram) Electrical connection.

[0050] Please refer to the reference. Figures 1 to 10 As shown in this application, recesses 111 are formed on the inner surface of the top plate 11 along the vertical direction corresponding to the positions of each of the simply supported ends 2221. The recesses 111 are formed by the inner surface of the top plate 11 being recessed upwards and the corresponding outer surface being protruding upwards. This application also includes an insulating filling part 3, which fills and fixes the recesses 111. When the docking module 9 carrying the electronic card is inserted into the docking space 210, the electronic card will press the elastic contact arm 222 upwards, causing the elastic contact arm to deform elastically. The simply supported ends 2221 can slide on the inner surface of the insulating filling part 3, thereby preventing the simply supported ends 2221 from short-circuiting with the metal housing 1. This satisfies the miniaturization design of the card connector and avoids increasing the overall thickness of the card connector.

[0051] Of course, to achieve better results, preferably, the inner surface of the insulating filling part 3 is flush with the inner surface of the top plate 11, or the inner surface of the insulating filling part 3 protrudes downward from the plane of the inner surface of the top plate 11 (e.g., Figure 10 (As shown in the embodiment). Furthermore, preferably, along the vertical direction, the plane containing the inner surface of the insulating filler 3 is located above the plane containing the inner surface of the top plate 11. The insulating filler 3 and the substrate portion 211 together form a recessed shape that is open at the front end and downwards along the pull-out direction of the docking module 9. In the preferred embodiment (e.g.) Figures 1 to 9In the illustrated embodiment, the projections of the insulating filler portion 3 and the substrate portion 211 do not overlap in the vertical direction. The insulating filler portion 3 is integrally injection molded into the recessed portion 111. Of course, in other embodiments (such as...), Figure 10 In some embodiments, the insulating filling portion 3 and the substrate portion 211 can also be designed as a single unit. To ensure a more stable bond between the insulating filling portion 3 and the recessed portion 111, preferably, the top plate 11 has a connecting hole 110 formed through the recessed portion 111 in a vertical direction, and the insulating filling portion 3 includes a portion that fills into the connecting hole 110. Please refer to the reference. Figures 4 to 10 As shown in the embodiment of this application, the side of the simply supported end 2221 away from the insulating filling part 3 is not blocked along the vertical direction, which makes it easier to injection mold the insulating body 21 and the metal shell 1.

[0052] Please refer to the reference. Figures 1 to 8 As shown, the connector assembly of this application also includes a switch assembly (not labeled), which has a fixed terminal portion 41 and a movable terminal portion 42. Preferably, the fixed terminal portion 41 is formed by bending the top plate 11 in the vertical direction into the docking space 10 from the front end position of the docking module in the insertion direction to form a cantilever shape. The movable terminal portion 42 is an independent terminal formed by stamping and bending a metal plate, including a retaining section 421 fixed in the end wall portion 212, an elastic section 422 formed by folding back one end of the retaining section 421 in the width direction, and a contact section 423 formed by extending the free section of the elastic section 422 in the insertion direction of the docking module and bending it in the width direction. The contact section 423 is in elastic contact with the front surface of the fixed terminal portion 41 in the insertion direction of the docking module. An insulating reinforcement portion 5 is also provided, integrally extended on the inner surface of the substrate portion 211. The insulating reinforcement portion 5 is attached to the rear surface of the fixed terminal portion 41 in the insertion direction of the docking module.

[0053] In this embodiment, the insulating body 21 is further provided with a clearance hole 2120, which is formed through the end wall portion 212 along the insertion and removal direction of the docking module. The contact segment 423 protrudes forward through the clearance hole 2120 along the insertion direction of the docking module, and at least a portion of the contact segment 423 protrudes upward through the clearance hole 2120 in the vertical direction. On the one hand, the clearance hole 2120 can serve as an observation hole when the switch terminals are assembled and overlapped; on the other hand, when the moving terminal portion 42 is pressed along the insertion direction of the docking module 9, the clearance hole 2120 can provide clearance space for the displacement of the contact segment 423. If necessary, the contact segment 423 can protrude through the clearance hole 2120 to the outside of the docking space 10, which is beneficial to the overall miniaturization design of the card connector assembly.

[0054] The connector assembly of this application also includes an upper positioning port 2111, formed by a downward recess of the outer surface of the front end of the base plate portion 211 along the insertion direction of the docking module. A lower positioning port 2112 is formed by an upward recess of the inner surface of the front end of the base plate portion 211 along the insertion direction of the docking module. An end positioning port 2112 is formed by an inward recess of the outer surface of the upper end position of the end wall portion 212 along the pull-out direction of the docking module. The fixing segment 221 includes a horizontal segment 2211 extending along the insertion / pull-out direction of the docking module and a vertical segment 2212 integrally connected to the front end of the horizontal segment 2211 along the insertion direction of the docking module and extending downward along the vertical direction. The upper surface of the front end of the horizontal segment 2211 along the insertion direction of the docking module protrudes into the upper positioning port 2111. The lower surface of the front end of the horizontal segment 2211 along the insertion direction of the docking module 9 protrudes into the lower positioning port 2112. The outer surface of the upper end of the vertical segment 2212 protrudes into the end positioning port 2112 along the vertical direction. Through the design of the multiple positioning ports (upper positioning port 2111, lower positioning port 2112, and end positioning port 2112), the longer fixed segment 221 is better positioned when integrally formed with the insulating body 21. In this embodiment, the upper positioning port 2111 and the lower positioning port 2112 are correspondingly arranged along the vertical direction. The upper positioning port 2111, lower positioning port 2112, and end positioning port 2112 are all designed near the connection between the vertical segment 2212 and the horizontal segment 2211 to avoid deformation of the fixed end 221.

[0055] This application discloses a card connector assembly 8 that is used in conjunction with a mating terminal assembly 8. The mating terminal assembly 8 is an independent terminal assembly, including an insulator (unlabeled) and multiple conductive terminals (unlabeled) integrally fixed with the insulator. After the mating terminal assembly 8 is separately soldered and fixed to the circuit board 7 inside the electronic device, the card connector assembly 8 of this application is then placed over the mating terminal assembly 8 and fixed to the circuit board 7. The area between the top of the mating terminal assembly 8 and the bottom of the terminal assembly 2 is for the insertion of the docking module 9.

[0056] 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.

[0057] 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 characterized by comprising: include: The metal shell (1) has a top plate (11) and two side plates (12) formed by bending down the two sides of the top plate (11). The top plate (11) and the two side plates (12) together form a docking space (10) and an insertion port is formed at one end. The terminal assembly (2) includes an insulating body (21) and a plurality of terminals (22), wherein the insulating body (21) includes a base plate portion (211) and an end wall portion (212), the end wall portion (212) is integrally formed on the front end of the base plate portion (211) along the insertion direction of the docking module, and the base plate portion (211) is fixed to the inner side of the top plate (11); Each of the terminals (22) includes a fixed section (221) embedded in the substrate portion (211) and the end wall portion (212), an elastic contact arm (222) integrally extended from the fixed section (221), and a mating foot (223) extending from the fixed section (221) at the end wall portion (212) out of the insulating body (21). The middle position of the elastic contact arm (222) protrudes into the mating space (10), and the free end of the elastic contact arm (222) forms a simply supported end (2221). The recess (111) is formed by the inner surface of the top plate (11) being recessed upward and the corresponding outer surface being protruding upward along the vertical direction; The insulating filling part (3) is integrally injection molded into the recessed part (111). The simply supported end (2221) corresponds to the inner surface of the insulating filling part (3) in the vertical direction. When the elastic contact arm (222) is pressed upward, the simply supported end (2221) can slide on the inner surface of the insulating filling part (3).

2. The card connector assembly according to claim 1, wherein: The inner surface of the insulating filling part (3) is flush with the inner surface of the top plate (11), or the inner surface of the insulating filling part (3) protrudes downward from the plane of the inner surface of the top plate (11). Along the vertical direction, the plane containing the inner surface of the insulating filling part (3) is located above the plane containing the inner surface of the top plate (11).

3. The card connector assembly according to claim 1 or 2, wherein: The insulating filling part (3) and the substrate part (211) together form a recessed shape with an open front end along the pull-out direction of the docking module and an open downward shape.

4. The card connector assembly according to claim 1 or 2, wherein: Along the vertical direction, the projections of the insulating filling portion (3) and the substrate portion (211) do not overlap.

5. The card connector assembly according to claim 1 or 2, characterized in that: The top plate (11) has a connecting hole (110) formed through the recess (111) in the vertical direction, and the insulating filling part (3) includes a portion that fills into the connecting hole (110).

6. The card connector assembly according to claim 1 or 2, characterized in that: The insulating filling part (3) and the substrate part (211) are integral.

7. The card connector assembly according to claim 1 or 2, characterized in that: Along the vertical direction, the side of the simply supported end (2221) away from the insulating filler (3) is not obstructed.

8. The card connector assembly according to claim 1 or 2, characterized in that, Also includes: The switch assembly includes a fixed terminal portion (41) and a movable terminal portion (42); The fixed terminal (41) is formed by bending the top plate (11) in the vertical direction into the docking space (10) from the front end position of the docking module in the insertion direction to form a cantilever shape; The moving terminal (42) is an independent terminal, including a retaining section (421) fixed in the end wall (212), an elastic section (422) formed by folding back one end of the retaining section (421) in the width direction, and a contact section (423) formed by extending the free section of the elastic section (422) in the insertion direction of the docking module and bending it in the width direction. The contact section (423) is in elastic contact with the front surface of the fixed terminal (41) in the insertion direction of the docking module. An insulating reinforcement (5) is integrally formed on the inner surface of the substrate portion (211), and the insulating reinforcement (5) is attached to the rear surface of the fixed terminal portion (41) along the insertion direction of the docking module.

9. The card connector assembly according to claim 8, characterized in that, Also includes: A clearance hole (2120) is formed through the end wall portion (212) along the insertion and removal direction of the docking module. The contact segment (423) protrudes forward from the clearance hole (2120) along the insertion direction of the docking module, and at least a portion of the contact segment (423) protrudes upward from the clearance hole (2120) in the vertical direction.

10. The card connector assembly according to claim 1 or 2, characterized in that, Also includes: The upper positioning port (2111) is formed by the outer surface of the front end of the substrate portion (211) being recessed downward along the insertion direction of the docking module; The lower positioning port (2112) is formed by the inner surface of the front end of the substrate portion (211) along the insertion direction of the docking module, which is recessed upward. The end positioning port (2112) is formed by the outer surface of the upper end position of the end wall (212) in the vertical direction, which is recessed inward along the pull-out direction of the docking module; The fixed section (221) includes a horizontal section (2211) extending along the insertion direction of the docking module and a vertical section (2212) integrally connected to the front end of the horizontal section (2211) along the insertion direction of the docking module and extending downward in the vertical direction. The upper surface of the front end of the horizontal segment (2211) along the insertion direction of the docking module is exposed into the upper positioning port (2111); The lower surface of the front end of the horizontal segment (2211) along the insertion direction of the docking module is exposed into the lower positioning port (2112); The outer surface of the upper end of the vertical segment (2212) is exposed into the end positioning port (2112) along the vertical direction.

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