Terminal assembly and card connector

Abstract

The utility model discloses a terminal assembly and a card connector, and the terminal assembly comprises an insulating body which is provided with an upper surface and a lower surface; the plurality of terminal holes are formed in the insulating body in a penetrating manner; a plurality of conductive terminals, wherein each conductive terminal is provided with a fixed plate embedded in the insulating body, an elastic arm extending out of the insulating body from the fixed plate, and a butt joint part extending out of the lower surface of the insulating body from the fixed plate; at least part of the elastic arm protrudes upwards from the terminal hole to the position above the upper surface and can elastically deform in the vertical direction. The upper surface of the fixing plate is embedded between the upper surface and the lower surface of the insulating body; the lower surface of the fixing plate is flush with the lower surface of the insulating body. According to the terminal assembly, miniaturization design can be realized, and the structure is stable.

Description

TECHNICAL FIELD

[0001] The application relates to a terminal assembly and a card connector. BACKGROUND

[0002] A SIM card (Subscriber Identification Module), also known as a user identity identification card and a smart card, must be installed on a GSM digital mobile phone to be used. The SIM card can store the information of a digital mobile phone customer, an encrypted key and a user's phone book, etc., and can be used for the identification of a GSM network customer identity and the encryption of voice information during the call of the customer.

[0003] For related prior art, please refer to Chinese Invention Patent Application CN111193123A. The prior art discloses a terminal assembly, which comprises an insulating body and a plurality of terminals. The plurality of terminals are integrally fixed with the insulating body by injection molding. Each terminal comprises a fixed part embedded in the insulating body, a connecting part extended out of the insulating body from the fixed part, and a butt joint part. The insulating body is formed with a terminal hole penetrating in the thickness direction. One end of the butt joint part is integrally connected with the fixed part and at least partially protrudes into the terminal hole. The butt joint part is in the shape of a long strip simple beam. The butt joint part protrudes out of the insulating body in the thickness direction at the middle position in the length direction. The insulating body is further formed with a limiting part. The limiting part is at least partially supported on the upper surface of the other end of the butt joint part. The lower surface of the other end of the butt joint part is not supported. The terminal assembly has the characteristics of miniaturization and thinness, simple structure, easy manufacturing and stable overall structure.

[0004] With the development of science and technology, SIM cards are becoming smaller and smaller. As a result, Micro SIM cards and Nano SIM cards have become popular. In order to possibly occupy less space inside the mobile phone, the card connector matched with the SIM card is also becoming thinner, which is beneficial to the thin and light design of the mobile phone. However, the terminal module (card connector) disclosed in the above prior art cannot meet the design and functional requirements.

[0005] Therefore, it is necessary to design a new terminal assembly and card connector to solve the above technical problems. CONTENT OF THE INVENTION

[0006] The application aims to provide a terminal assembly and a card connector, which can realize thinner design and more effective welding and fixation with a butt joint circuit board.

[0007] In order to achieve the above purpose, the application provides the following technical solutions:

[0008] A terminal assembly comprises:

[0009] An insulating body formed with an upper surface and a lower surface;

[0010] A plurality of terminal holes formed through the insulating body;

[0011] A plurality of conductive terminals, each of which is formed with a fixing plate embedded in the insulating body, an elastic arm extended from the fixing plate out of the insulating body, and a butt joint portion extended from the fixing plate and exposed out of the lower surface of the insulating body;

[0012] At least part of the elastic arm is protruded upward above the upper surface by the terminal hole and can be elastically deformed in the up-down direction;

[0013] The upper surface of the fixing plate is embedded between the upper surface and the lower surface of the insulating body;

[0014] The lower surface of the fixing plate is flush with the lower surface of the insulating body.

[0015] Further, the butt joint portion is formed by punching downward in the up-down direction from the fixing plate, and the lower surface of the butt joint portion is protruded downward and beyond the lower surface of the insulating body.

[0016] Further, the butt joint portion is in the shape of a fixed beam, both ends of the butt joint portion are integrally connected with the fixing plate, and both sides of the butt joint portion are formed with through holes;

[0017] A giving-through hole is formed through the insulating body, and the butt joint portion is formed in the giving-through hole.

[0018] Further, it further comprises an implanting portion which is formed by extending and bending upwardly from the fixing plate, and the implanting portion is embedded and fixed in the insulating body.

[0019] Further, it further comprises a fixing through hole formed through the position where the implanting portion is connected with the fixing plate, and the fixing through hole is filled with the insulating body.

[0020] Further, each of the elastic arms is formed by extending in the front-back direction, one end of the elastic arm is integrally connected with the fixing plate, and the other end of the elastic arm is in the shape of a cantilever;

[0021] At least one of the butt joint portions is formed at the position where the fixing plate is connected with one end of the elastic arm;

[0022] A creepage-preventing tin hole is formed through the fixing plate, and the creepage-preventing tin hole is located between the corresponding butt joint portion and one end of the elastic arm integrally connected with the fixing plate in the front-back direction;

[0023] The creepage-preventing tin hole is filled with the insulating body.

[0024] Further, the docking circuit board is provided, and the lower surface of each docking portion is attached to the upper surface of the docking circuit board and fixed by welding;

[0025] A spacing gap is formed between the lower surface of the fixing plate and the upper surface of the docking circuit board;

[0026] A spacing gap is formed between the lower surface of the insulating body and the upper surface of the docking circuit board.

[0027] Further, each elastic arm is formed in an extending manner in the front-rear direction, one end of the elastic arm is integrally connected to the fixing plate, and the other end of the elastic arm is in a cantilevered manner;

[0028] An insulating stop portion is integrally provided with the insulating body;

[0029] The upper surface of the insulating stop portion is higher than the upper surface of the insulating body;

[0030] The other end of the elastic arm abuts upwardly against the lower surface of the insulating stop portion;

[0031] The lower surface of the other end of the elastic arm is higher than the lower surface of the insulating body.

[0032] To achieve the above object, the application further discloses the following technical scheme.

[0033] A connector comprises the terminal assembly according to any one of the above.

[0034] Further, the terminal assembly can be matched with a SIM card to contact and realize signal transmission.

[0035] Compared with the prior art, the application has the beneficial effects that a thinner design can be realized, and more effective welding fixing with the docking circuit board can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a perspective view of the terminal assembly of the application.

[0037] Figure 2 is Figure 1 is a perspective view of the terminal assembly of the application from another angle.

[0038] Figure 3 is Figure 1 is an exploded view of the terminal assembly.

[0039] Figure 4 is Figure 1 is a top view of the terminal assembly.

[0040] Figure 5 is a view of the terminal assembly from Figure 4A cross-sectional view along line A-A.

[0041] Figure 6 is Figure 5 An enlarged view of the structure in the dashed box. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0043] In the description of the present application, it should be noted that unless explicitly specified and limited, the terms "mounting", "assembling", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the description of the present application, it should be understood that the terms "including" and "having" and any variations thereof used in the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0045] In addition, in order to ensure the accuracy of the description, all the directions involved in the present application are uniformly defined with reference to Figure 1 as the reference, the direction in which the X axis is defined as the left-right direction; the direction in which the Y axis is defined as the up-down direction, wherein the positive direction of the Y axis is upward; the direction in which the Z axis is defined as the front-back direction.

[0046] Please refer to Figure 1 and Figure 6 A terminal assembly disclosed by the present application includes: an insulating body 1 and a plurality of conductive terminals 2 fixed on the insulating body 1 by integral injection molding. Wherein, the insulating body 1 is formed with an upper surface 101 and a lower surface 102. The insulating body 1 is formed with a plurality of terminal holes 10 along the up-down direction, and a plurality of terminal holes 10 are arranged into two rows along the left-right direction, and each row of terminal holes is provided with three terminal holes.

[0047] Further, the conductive terminal 2 is formed by punching a metal plate, each of the conductive terminal 2 includes a fixed plate 21 extending along a horizontal plane and embedded in the insulating body 1, an elastic arm 22 extending out of the insulating body 1 from the fixed plate 21, and a butt joint portion 23 extending from the fixed plate 21 and exposed out of the lower surface 102 of the insulating body 1. Specifically, the elastic arm 22 is arched upward at the middle position in the front-rear direction and protrudes above the upper surface 101 of the insulating body 1 to form a contact portion (not numbered) for elastically butting with a butt joint module (such as an electronic card). The elastic arm 22 can be elastically deformed in the up-down direction;

[0048] Please refer to Figures 1 to 6 As shown in the drawings, in the present application, in the preferred embodiment, the fixed plate 21 is embedded in the insulating body 1. Specifically, the upper surface 201 of the fixed plate 21 is embedded between the upper surface 101 and the lower surface 102 of the insulating body 1. The lower surface 202 of the fixed plate 21 is flush with the lower surface 102 of the insulating body 1. Such design can minimize the overall thickness of the terminal assembly, which is conducive to the miniaturization design.

[0049] Further, in the preferred embodiment of the present application, the butt joint portion 23 is formed by punching the fixed plate 21 downward in the up-down direction, and the lower surface of the butt joint portion 23 protrudes downward and beyond the lower surface 102 of the insulating body 1. Overall, the butt joint portion 23 is in the shape of a downward protruding convex. In some embodiments, the butt joint portion 23 can also be designed as a fixed beam, both ends of the butt joint portion 23 are integrally connected with the fixed plate 21, both sides of the butt joint portion 23 form through holes 203 respectively, and the insulating body 1 corresponds to the positions of the through holes 203 and the butt joint portion 23 and is formed with a clearance through hole 103 in the up-down direction. In the embodiment of the present application, two clearance through holes 103 are formed on both sides of the insulating body of the terminal assembly in the left-right direction. Such design can make the terminal assembly and the butt joint circuit board hold more firmly and stably.

[0050] Please refer to Figures 2 to 5As shown, in the embodiment of the present application, the local position of the fixed plate 21 is also inclined and bent upward to form a plurality of implanting parts 211. When the conductive terminal 2 is integrally injection molded with the insulating body 1, the implanting parts 211 are embedded in the insulating body 1, thereby strengthening the holding between the conductive terminal 2 and the insulating body 1. Further, in the preferred embodiment, the position where the implanting part 211 is connected with the fixed plate 21 is also formed with a fixed through hole 2110, and the fixed through hole 2110 is filled with the insulating body 1, so as to further strengthen the holding between the conductive terminal 2 and the insulating body 1. Of course, in order to achieve better effect, half of the fixed through hole 2110 is formed on the implanting part 211, and the other half is formed on the fixed plate 21.

[0051] Please refer to Figures 1 to 5 As shown, in the preferred embodiment of the present application, the elastic arm 22 extends in the front-rear direction, one end of the elastic arm 22 is integrally connected with the fixed plate 21, and the other end of the elastic arm 22 is cantilevered. Among them, at least one abutting part 23 is formed at the position where the fixed plate 21 is integrally connected with one end of the elastic arm 22. In addition, in the preferred embodiment, the fixed plate 21 is also formed with an anti-tin climbing hole 212, and the anti-tin climbing hole 212 is located between the end where the elastic arm 22 and the fixed plate 21 are integrally connected and the corresponding abutting part 23 in the front-rear direction. The anti-tin climbing hole 212 is filled with the insulating body 1. The lower surface of the terminal assembly is formed with a joint (not numbered) at the joint position of the anti-tin climbing hole 212 and the insulating body, and the abutting part 23 is blocked by the joint on the extension path of the elastic arm 227 in the front-rear direction, thereby achieving the effect of anti-tin climbing. Of course, in order to achieve better effect, the anti-tin climbing hole 212 needs to be as large as possible (referring to the extension width in the left-right direction), and in the preferred embodiment, the extension width of the anti-tin climbing hole 212 in the left-right direction is not less than half of the width of the end where the elastic arm 22 and the fixed plate 21 are integrally connected; and in the more preferred embodiment, the extension width of the anti-tin climbing hole 212 in the left-right direction is not less than the width of the end where the elastic arm 22 and the fixed plate 21 are integrally connected.

[0052] The terminal assembly of the present application is mainly used for welding to a mating circuit board (not shown), wherein the lower surface of each of the mating portions 23 is attached to the upper surface of the mating circuit board and fixed by welding. In a preferred embodiment, a spacing gap is formed between the lower surface 202 of the fixed plate 21 and the upper surface of the mating circuit board; a spacing gap is formed between the lower surface 102 of the insulating body 1 and the upper surface of the mating circuit board. In this way, the welding stability between the terminal assembly and the mating circuit board can be improved, and the planarity of the mating portions 23 can be improved. If the mating portions 23 and the entire fixed plate 21 are designed on the same plane, it is not easy to control the planarity, for example, some positions are deformed upward, which can easily affect the welding stability between the mating portions 23 and the mating circuit board. Uniformly slightly raising the mating portions 23 can easily stabilize the planarity.

[0053] Please refer to Figures 1 to 6 As shown, in a preferred embodiment, the insulating body 1 is further integrally provided with an insulating stop portion 104. The upper surface of the insulating stop portion 104 is higher than the upper surface 101 of the insulating body 1. The other end of the elastic arm 22 abuts upward against the lower surface of the insulating stop portion 104. The lower surface of the other end of the elastic arm 22 is higher than the lower surface 102 of the insulating body 1. In this way, on the one hand, the structural strength of the insulating stop portion 104 can be appropriately enhanced, and on the other hand, the deformation and displacement of the other end of the elastic arm 22 below the lower surface of the insulating stop portion 104 can be provided with space.

[0054] The terminal assembly of the present application can be used in a card connector, for example, can be used in cooperation with a metal shell to form a complete card connector.

[0055] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0056] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A terminal assembly characterized by, The terminal assembly comprises: an insulating body (1) formed with an upper surface (101) and a lower surface (102); a plurality of terminal holes (10) formed through the insulating body (1); a plurality of conductive terminals (2), each of the conductive terminals (2) is formed with a fixing plate (21) embedded in the insulating body (1), an elastic arm (22) extended out of the insulating body (1) from the fixing plate (21), and a butt joint portion (23) extended from the fixing plate (21) and exposed out of the lower surface (102) of the insulating body (1); at least part of the elastic arm (22) is protruded upwardly above the upper surface (101) by the terminal hole (10) and can be elastically deformed in the up-down direction; the upper surface (201) of the fixing plate (21) is embedded between the upper surface (101) and the lower surface (102) of the insulating body (1); the lower surface (202) of the fixing plate (21) is flush with the lower surface (102) of the insulating body (1).

2. The terminal assembly of claim 1, wherein: The butt joint portion (23) is formed by punching downwardly from the fixing plate (21) in the up-down direction, and the lower surface of the butt joint portion (23) is protruded downwardly and beyond the lower surface (102) of the insulating body (1).

3. The terminal assembly of claim 2, wherein: The butt joint portion (23) is in the shape of a fixed beam, and the two ends of the butt joint portion (23) are integrally connected with the fixing plate (21), and the two sides of the butt joint portion (23) are respectively formed with through holes (203); a giving-through hole (103) formed through the insulating body (1), and the butt joint portion (23) is formed in the giving-through hole (103).

4. The terminal assembly of claim 1 or 2 or 3, wherein, Further comprising: an implanting portion (211) formed by extending and bending upwardly from the fixing plate (21), and the implanting portion (211) is embedded and fixed in the insulating body (1).

5. The terminal assembly of claim 4, wherein, Further comprising: a fixing through hole (2110) formed through the position where the implanting portion (211) is connected with the fixing plate (21), and the fixing through hole (2110) is filled with the insulating body (1).

6. The terminal assembly according to claim 1 or 2 or 3, wherein: each of the elastic arms (22) is formed by extending in the front-rear direction, one end of the elastic arm (22) is integrally connected with the fixing plate (21), and the other end of the elastic arm (22) is in the shape of a cantilever; at least one of the butt joint portions (23) is formed at the position where the fixing plate (21) is connected with one end of the elastic arm (22); a tin creep prevention hole (212) formed through the fixing plate (21), and the tin creep prevention hole (212) is located between the one end of the elastic arm (22) integrally connected with the fixing plate (21) and the corresponding butt joint portion (23) in the front-rear direction; the tin creep prevention hole (212) is filled with the insulating body (1).

7. The terminal assembly of claims 2 or 3, wherein, Further comprising: a butt joint circuit board, the lower surface of each of the butt joint portions (23) is attached to the upper surface of the butt joint circuit board and fixed by welding; a spacing gap is formed between the lower surface (202) of the fixing plate (21) and the upper surface of the butt joint circuit board. A gap is formed between the lower surface (102) of the insulating body (1) and the upper surface of the mating circuit board.

8. The terminal assembly of claim 1 or 2 or 3, wherein: Each of the elastic arms (22) is formed extending in the front-rear direction, one end of the elastic arm (22) is integrally connected with the fixed plate (21), and the other end of the elastic arm (22) is cantilevered; An insulating stop portion (104) is integrally provided with the insulating body (1); The upper surface of the insulating stop portion (104) is higher than the upper surface (101) of the insulating body (1); The other end of the elastic arm (22) is upwardly abutted against the lower surface of the insulating stop portion (104); The lower surface of the other end of the elastic arm (22) is higher than the lower surface (102) of the insulating body (1).

9. A card connector characterized by comprising: The terminal assembly comprises any one of the terminal assemblies according to claims 1 to 8.

10. The card connector according to claim 9, wherein: The terminal assembly can be matched with a SIM card to contact and realize signal transmission.

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