A terminal assembly

Abstract

A terminal assembly comprises an insulating body and a plurality of terminals, the 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 through 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 simply supported beam, the butt joint part protrudes out of the insulating body in the thickness direction of the insulating body 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, lightness and thinness, simple structure, easy manufacturing and stable overall structure.

Description

Technical field

[0001] The present application relates to a terminal assembly. [Background Technology]

[0002] A SIM card (Subscriber Identification Module), also known as a user identity card or smart card, is required for GSM digital mobile phones. It stores customer information, encryption keys, and the user's phone book. It helps the GSM network authenticate subscribers and encrypts voice messages during calls.

[0003] On August 23, 2019, China's invention patent application CN 110165449 A was published. The invention patent application discloses a terminal module, including an insulating body and a plurality of conductive terminals fixed in the insulating body by integral molding. The insulating body is formed with an upper surface and a lower surface arranged opposite to each other. The conductive terminal includes a fixing portion fixed to the insulating body, an elastic portion extending from the fixing portion and protruding upward from the upper surface of the insulating body, and a corresponding welding portion connected to the fixing portion and exposed outside the insulating body. The elastic portion is provided with a contact portion located above the upper surface of the insulating body. The free end of the elastic portion extends to form a terminal head. The lower surface of the insulating body is recessed at a corresponding position of each terminal head to form a terminal clearance groove. The end edge of the terminal head is exposed in the clearance groove. The insulating body forms a mortgage portion located above the terminal head and a guide sliding portion located below the terminal head. The upper position of the end edge of the terminal head is completely covered by the insulating body.

[0004] With the development of technology, SIM cards have become smaller and smaller, and Micro SIM cards and Nano SIM cards have become popular. In line with the slim design of current smartphones, the card connectors used with SIM cards are also becoming thinner, so as to occupy as little space as possible inside the phone and facilitate the lightweight design of the phone. However, the terminal modules (card connectors) disclosed in the above-mentioned prior art can no longer meet the design and functional requirements.

[0005] Therefore, it is necessary to provide a new terminal assembly to overcome the above-mentioned defects. [Summary of the invention]

[0006] The purpose of this application is to provide a terminal assembly that is miniaturized, lightweight, and has a simple structure, is easy to manufacture, and has a stable overall structure.

[0007] The purpose of this application is achieved through the following technical solutions:

[0008] A terminal assembly includes an insulating body and several terminals, several of the terminals are fixed to the insulating body as a whole by injection molding, each of the terminals includes a fixing portion embedded in the insulating body, a connecting portion extending from the fixing portion to the outside of the insulating body, and a docking portion, the insulating body is penetrated along the thickness direction to form a terminal hole, one end of the docking portion is integrally connected to the fixing portion and at least partially protrudes into the terminal hole, the docking portion is in the shape of a long simply supported beam, and the docking portion protrudes out of the insulating body in the thickness direction of the insulating body at the middle position in the length direction, the insulating body also forms a limiting portion, the limiting portion is at least partially supported on the upper surface of the other end of the docking portion, and the lower surface of the other end of the docking portion is not supported.

[0009] Furthermore, the thickness of the limiting portion supported on the upper surface of the other end of the docking portion is not less than half the thickness of the insulating body.

[0010] Furthermore, the terminal assembly is used to dock with a docking circuit board, the connecting portion of each terminal is electrically connected to the conductive path on the docking circuit board, and a gap is provided between the lower surface of the other end of the docking portion and the surface of the docking circuit board.

[0011] Furthermore, the docking portion includes a first elastic arm arranged obliquely, a second elastic arm arranged obliquely, a limiting arm, a first bending portion connecting the first elastic arm and the fixed portion as a whole, a second bending portion connecting the first elastic arm and the second elastic arm as a whole, and a third bending portion connecting the second elastic arm and the limiting arm as a whole. The first elastic arm, the second elastic arm and the limiting arm are all flat-plate-shaped, and the first elastic arm, the second elastic arm and the second bending portion are connected to form an inverted V-shaped cross-section.

[0012] Furthermore, the docking parts of several of the terminals are arranged in two rows, and the insulating body is provided with several terminal holes, each terminal hole corresponds to each docking part one by one, and the terminal assembly also includes a metal reinforcement embedded in the insulating body, and the metal reinforcement includes a horizontal part located between the two rows of terminals and a longitudinal part staggered with the horizontal part.

[0013] Furthermore, the transverse member extends from the left edge of the insulating body to the right edge of the insulating body, and both ends of the transverse member extend out of the insulating body to form welding feet.

[0014] Furthermore, the longitudinal member extends from the front end edge of the insulating body to the rear end edge of the insulating body.

[0015] Furthermore, each terminal is formed with two connecting parts, and each terminal hole is formed with a clearance opening connected to the terminal hole at one end position along the left and right directions. One of the connecting parts of each terminal protrudes out of the insulating body from the outer edge of the insulating body, and the other connecting part of each terminal protrudes into the corresponding clearance opening.

[0016] Furthermore, the row of terminals is provided with at least three terminals, wherein the clearance openings of the two terminal holes adjacent to the longitudinal member are arranged on a side away from the longitudinal member.

[0017] Furthermore, each terminal is located in a non-direct extension between the docking portion and the connecting portion in the corresponding terminal hole.

[0018] Compared with the prior art, the present invention has the characteristics of miniaturization and lightness, simple structure, easy manufacturing and stable overall structure.

Brief Description of the Drawings

[0019] Figure 1 It is a three-dimensional schematic diagram of the terminal assembly of the present application;

[0020] Figure 2 yes Figure 1 is a perspective schematic diagram of the terminal assembly shown as viewed from another angle;

[0021] Figure 3 This is an exploded view of the terminal assembly of the present application, which shows a three-dimensional schematic diagram of the insulating body, terminal, and metal reinforcement when they are separated from each other.

[0022] Figure 4 is a top view of the terminal assembly of the present application;

[0023] Figure 5 is a top view of the terminal assembly of the present application, wherein the distribution of the terminals and metal reinforcements embedded in the insulating body is further illustrated in the form of dotted lines;

[0024] Figure 6 This is a top view of the insulating body, terminal, and metal reinforcement in the terminal assembly of the present application when they are separated from each other;

[0025] Figure 7 yes Figure 4 The cross-sectional view taken along line AA further includes a docking circuit board, schematically illustrating the matching relationship between the terminal assembly of the present application and the docking circuit board. [Specific implementation method]

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the application can be combined with each other. The application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] In the description of the application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the application based on the specific circumstances.

[0028] In the description of the application, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. 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 explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0029] In order to make the whole article accurate, all directions involved should be expressed in Figure 1 For reference, the length direction of the terminal assembly 100 is defined as the front-to-back direction, that is, the plug-in and pull-out direction of the electronic card (not shown) that cooperates with the terminal assembly 100 of the present application; the width direction of the terminal assembly 100 is defined as the left-to-right direction.

[0030] Please refer to Figures 1 to 7 As shown, the present application discloses a terminal assembly 100, comprising an insulating body 1 made of an insulating plastic material and a plurality of terminals 2. The plurality of terminals 2 are integrally fixed to the insulating body 1 by injection molding. The terminal assembly 100 is generally used for soldering to an internal docking circuit board (not shown) of an electronic device. The terminal assembly 100 cooperates with a metal housing (not shown) to form a card connector. A card insertion space is formed between the metal housing and the terminal assembly 100. The card insertion space is used to insert and accommodate at least one electronic card. The electronic card communicates with the docking circuit board through the terminals 2.

[0031] Please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7As shown, each terminal 2 includes a fixed portion 21 embedded in the insulating body 1, a connecting portion 22 extending from the fixed portion 21 outside the insulating body 1, and a docking portion 23. The insulating body 1 is formed with a terminal hole 10 along the thickness direction. One end of the docking portion 23 is integrally connected to the fixed portion 21 and at least partially protrudes into the terminal hole 10. The docking portion 23 is in the shape of an elongated simply supported beam. The docking portion 23 protrudes out of the insulating body 1 in the thickness direction at the middle position of the length direction. The insulating body 1 also forms a limiting portion 11. The limiting portion 11 is at least partially supported on the upper surface of the other end of the docking portion 23, while the lower surface of the other end of the docking portion 23 is unsupported. This allows the limiting portion 11 to be designed to be thicker, ensuring that the limiting portion 11 has a strong structural strength. This design ensures that the limiting portion 11 can effectively limit the end of the docking portion 23 of the terminal 2, while also allowing the insulating body 1 to be made as thin as possible. In this design, the thickness of the limiting portion 11 supported on the upper surface of the other end of the docking portion 23 is not less than half the thickness of the insulating body 1 .

[0032] Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 7 As shown, the terminal assembly is used to connect with a docking circuit board 4. The connecting portion 22 of each terminal 2 is electrically connected to the conductive path on the docking circuit board 4. A gap is provided between the lower surface of the other end of the docking portion 23 and the surface of the docking circuit board 4. The docking portion 23 of each terminal 2 includes a first elastic arm 231 arranged obliquely, a second elastic arm 232 arranged obliquely, a limiting arm 235, a first bent portion 233 connecting the first elastic arm 231 and the fixing portion 21, a second bent portion 234 connecting the first elastic arm 231 and the second elastic arm, and a third bent portion 236 connecting the second elastic arm 232 and the limiting arm 235. The first elastic arm 231, the second elastic arm 232, and the limiting arm 235 are all flat. The first elastic arm 231, the second elastic arm 232, and the second bent portion 234 are connected to form an inverted V-shaped cross-section.

[0033] When the terminal assembly 100 is assembled and fixed to the surface of the circuit board, and during the process of cooperating with the mating electronic card to realize the function, the second bending part 234 of the mating part 23 is pressed down, the limiting arm 235 of the free end of the mating part 23 is passively displaced downward and contacts the mating circuit board, and then the mating part 23 is stretched downward and toward the free end, during which the limiting arm 235 is disengaged from the limiting part 11 and slides on the surface of the mating circuit board. During the sliding process of the circuit board, the free end of the limiting arm 235 is slightly tilted upward with the third bending part 236 as the fulcrum. In order to ensure that the free end of the limiting arm 235 does not protrude above the surface of the insulating body 1 during the entire operation process, the length of the limiting arm 235 is designed as short as possible.

[0034] In addition, in the present application, the first elastic arm 231, the second elastic arm 232 and the limiting arm 235 are all designed in a flat plate shape, so that the number of bends of the mating part 23 is reduced as much as possible, thereby ensuring that the mating part 23 has a shorter body extension length as much as possible within the entire length range, so that the distance of the forward stretching of the mating part 23 is shorter during the process of being pressed and deformed, and the height of the upward tilting of the free end of the limiting arm 235 is lower. The overall thickness of the terminal assembly 100 can be further reduced.

[0035] Please refer to Figures 1 to 7 As shown in the figure, the terminal 2 is provided with six, the mating part 23 of each terminal 2 extends in the front-rear direction and is arranged in two rows in the front-rear direction with three as one row, the terminal hole 10 of the insulating body 1 is provided with six, each terminal hole 10 corresponds to each mating part 23 one by one, the terminal assembly 100 further includes a metal reinforcing part 3 embedded in the insulating body 1, the metal reinforcing part 3 includes a transverse part 31 located between the two rows of terminals 2 and a longitudinal part 32 staggered with the transverse part 31. The metal reinforcing part 3 is used to strengthen the strength of the insulating body 1, so that the overall structural strength of the terminal assembly 100 is better.

[0036] In the present application, the transverse part 31 extends from the left side edge of the insulating body 1 to the right side edge of the insulating body 1, and the two ends of the transverse part 31 extend out of the insulating body 1 to form a welding foot 311. The longitudinal part 32 extends from the front end edge of the insulating body 1 to the rear end edge of the insulating body 1. The transverse part 31 and the longitudinal part 32 form an overall structure penetrating the front-rear and left-right directions of the insulating body 1, forming a cross-shaped reinforcing effect of longitudinal and transverse interlacing, which can maximize the structural strength of the terminal assembly 100.

[0037] Each terminal 2 is formed with two connecting portions 22, and each terminal hole 10 is formed with a clearance opening 101 in communication with the terminal hole 10 at one end position along the left-right direction. One of the connecting portions 22 of each terminal 2 protrudes from the insulating body 1 from the outer edge (specifically, the end edge in the front-to-back direction) of the insulating body 1, and the other connecting portion 22 of each terminal 2 protrudes into the corresponding clearance opening 101. The row of terminals 2 is provided with at least three terminals, wherein the clearance openings 101 of the two terminal holes 10 adjacent to the longitudinal member 32 are provided on the side of the terminal hole 10 away from the longitudinal member 32. No connecting portion 22 is provided around the position where the longitudinal member 32 is provided in the insulating body 1, so that the effective space of the insulating body can be more reasonably utilized, which is conducive to the overall miniaturization design of the terminal assembly 100.

[0038] Combine Figures 3 to 6 As shown, in the present application, each of the terminals 2 is located between the docking portion 23 and the connecting portion 22 in the terminal hole 10 and does not extend directly (but is extended and connected through the fixing portion 21 that is completely buried in the insulating body 1). Such a design can prevent the solder paste from climbing along the connecting portion 22 and the fixing portion 21 to the docking portion 23 when the connecting portion 22 is soldered to the docking circuit board (that is, the anti-tin climbing function).

[0039] The coaxial connector of the present application has the characteristics of miniaturization, lightness and thinness, and at the same time has a simple structure, is easy to manufacture and has a stable overall structure.

[0040] The above description is only part of the implementation methods of the present application, not all of the implementation methods. Any equivalent changes made to the technical solution of the present application by ordinary technicians in this field after reading the description of the present application are covered by the claims of the present application.

Claims

1. A terminal assembly, characterized in that: The invention comprises an insulating body and a plurality of terminals, wherein the plurality of terminals are integrally fixed to the insulating body by injection molding, each of the terminals comprising a fixing portion embedded in the insulating body, a connecting portion extending from the fixing portion out of the insulating body, and a docking portion. The insulating body is penetrated along the thickness direction to form a terminal hole, one end of the docking portion is integrally connected to the fixing portion and at least partially protrudes into the terminal hole, the docking portion is in the shape of an elongated simply supported beam, and the docking portion protrudes out of the insulating body in the thickness direction of the insulating body at a middle position in the longitudinal direction. The insulating body further forms a limiting portion, the limiting portion being at least partially supported on the upper surface of the other end of the docking portion, and the lower surface of the other end of the docking portion is unsupported. The docking parts of several of the terminals are arranged in two rows, and the terminal assembly also includes a metal reinforcement embedded in the insulating body, the metal reinforcement includes a transverse member located between the two rows of terminals and a longitudinal member staggered with the transverse member, and the longitudinal member includes a portion located between two adjacent docking parts in one row of the docking parts and a portion located between two adjacent docking parts in another row of the docking parts.

2. The terminal assembly according to claim 1, wherein: The thickness of the limiting portion supported on the upper surface of the other end of the butting portion is not less than half the thickness of the insulating body.

3. The terminal assembly according to claim 1, wherein: The terminal assembly is used to dock with a docking circuit board, the connecting portion of each terminal is electrically connected to the conductive path on the docking circuit board, and a gap is provided between the lower surface of the other end of the docking portion and the surface of the docking circuit board.

4. The terminal assembly according to claim 1, wherein: The docking portion includes a first elastic arm arranged obliquely, a second elastic arm arranged obliquely, a limiting arm, a first bending portion connecting the first elastic arm and the fixing portion as a whole, a second bending portion connecting the first elastic arm and the second elastic arm as a whole, and a third bending portion connecting the second elastic arm and the limiting arm as a whole. The first elastic arm, the second elastic arm and the limiting arm are all flat-plate-shaped, and the first elastic arm, the second elastic arm and the second bending portion are connected to form an inverted V-shaped cross-section.

5. The terminal assembly according to any one of claims 1 to 4, characterized in that: The insulating body is provided with a plurality of terminal holes, and each terminal hole corresponds to each docking portion one by one.

6. The terminal assembly according to claim 5, wherein: The transverse member extends from the left edge of the insulating body to the right edge of the insulating body, and both ends of the transverse member extend out of the insulating body to form welding legs.

7. The terminal assembly according to claim 5, wherein: The longitudinal piece extends from the front end edge of the insulating body to the rear end edge of the insulating body.

8. The terminal assembly according to claim 5, wherein: Each terminal is formed with two connecting parts, and each terminal hole is formed with a clearance opening connected to the terminal hole at one end position along the left and right directions. One of the connecting parts of each terminal protrudes from the outer edge of the insulating body out of the insulating body, and the other connecting part of each terminal protrudes into the corresponding clearance opening.

9. The terminal assembly according to claim 8, wherein: There are at least three terminals in the row, wherein the clearance openings of the two terminal holes adjacent to the longitudinal member are arranged on a side away from the longitudinal member.

10. The terminal assembly according to claim 8, wherein: Each terminal is located in a corresponding terminal hole and extends non-directly between the butting portion and the connecting portion.

Images