Micro Terminal Assemblies

Abstract

A miniature terminal assembly comprises an insulating body and eight terminals fixed to the insulating body by injection molding, each terminal comprises a fixing portion buried in the insulating body, a first connecting portion and a docking portion extending from the fixing portion outside the insulating body, the first connecting portion being electrically connected to a docking circuit board, the insulating body is penetrated along the thickness direction corresponding to each docking portion to form a terminal hole, the docking portion is accommodated in the terminal hole, and the docking portion protrudes out of the insulating body in the thickness direction to form a contact point, the eight terminals comprise three front row terminals arranged in a row, three rear row terminals arranged in another row, and two edge terminals, the three front row terminals and the three rear row terminals are arranged in two rows along the front-to-back direction, and the two edge terminals are respectively located in the middle of the left and right sides of the three front row terminals and the three rear row terminals, and have the characteristics of miniaturization and thinness, and at the same time, the structure is simple, easy to manufacture and the overall structure is stable.

Description

[Technical field]

[0002] The present application relates to a miniature terminal assembly. [Background technology]

[0004] SIM card (Subscriber Identity Module), also known as user identification card, smart card, GSM digital mobile phone must be installed with this card before it can be used. SIM card can store digital mobile phone customer information, encryption keys and user phone book and other contents, which can be used for GSM network customer identity authentication and encrypt customer voice information during calls.

[0005] On August 23, 2019, China's invention patent application No. CN110165449A 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 oppositely, 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 exposed outside the insulating body and connected to the fixing portion, the elastic portion is provided with a contact point 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, and the upper position of the end edge of the terminal head is completely covered by the insulating body.

[0006] With the development of technology, SIM cards are becoming smaller and smaller, followed by the popularity of Miro-SIM cards and Nano-SIM cards. In conjunction with the slim body design of current smartphones, the card connectors used with SIM cards are also becoming thinner and thinner, so as to occupy as little space as possible inside the phone, which is conducive to the lightweight design of the phone. However, such terminal modules (card connectors) disclosed in the above-mentioned prior art can no longer meet the design and functional requirements.

[0007] Therefore, it is necessary to provide a new terminal assembly to overcome the above-mentioned defects. [Summary of the invention]

[0009] The purpose of the present application is to provide a miniature terminal assembly that is miniaturized, lightweight, and has a simple structure, is easy to manufacture, and has a stable overall structure.

[0010] The purpose of this application is achieved through the following technical solutions:

[0011] A miniature terminal assembly comprises an insulating body and eight terminals fixed to the insulating body by injection molding, each of the terminals comprising a fixing portion buried in the insulating body, a first connecting portion extending from the fixing portion out of the insulating body, and a docking portion, the first connecting portion being electrically connected to a docking circuit board, the insulating body being penetrated along a thickness direction corresponding to each docking portion to form a terminal hole, the docking portion being accommodated in the terminal hole, the docking portion protruding out of the insulating body in the thickness direction to form a contact point, the eight terminals comprising three front row terminals arranged in one row, three rear row terminals arranged in another row, and two edge terminals, the three front row terminals and the three rear row terminals being arranged in two rows along a front-to-back direction, and the two edge terminals being respectively located in the middle of the left and right sides of the three front row terminals and the three rear row terminals.

[0012] Furthermore, the docking portion is in a long strip shape along the front-to-back direction, and the docking portion protrudes out of the insulating body in the thickness direction of the insulating body at a middle position in the front-to-back direction to form the contact point.

[0013] Furthermore, the contact points of the terminals on the left among the three front row terminals and the contact points of the terminals on the left among the three rear row terminals are both located on the straight line AA extending in the front-to-back direction, the first connection portions of the terminals on the left among the three front row terminals are located on the left side of the straight line AA, and the first connection portions of the terminals on the left among the three rear row terminals are located on the left side of the straight line AA.

[0014] Furthermore, the contact points of the terminals on the right side of the three front row terminals and the contact points of the terminals on the right side of the three rear row terminals are both located on the BB straight line extending in the front-to-back direction, the first connection portions of the terminals on the left side of the three front row terminals are located on the right side of the BB straight line, and the first connection portions of the terminals on the left side of the three rear row terminals are located on the right side of the BB straight line.

[0015] Furthermore, the contact point of the middle terminal among the three front row terminals and the contact point of the middle terminal among the three rear row terminals are both located on the CC straight line extending in the front-to-back direction, the first connection portion of the middle terminal among the three front row terminals is located on the CC straight line, and the first connection portion of the middle terminal among the three rear row terminals is located on the CC straight line.

[0016] Furthermore, there are eight terminal holes, which correspond to the docking parts of the eight terminals respectively, and each terminal also includes a second connecting part. The second connecting parts of the three front-row terminals and the three rear-row terminals all protrude into the corresponding terminal holes.

[0017] Furthermore, the butting portion located in the terminal hole and the second connecting portion of each of the three front-row terminals and the three rear-row terminals do not extend directly.

[0018] Furthermore, the insulating body further comprises a plurality of isolation blocks, and the isolation blocks separate the butting portion and the second connecting portion of each terminal in the three front-row terminals and the three rear-row terminals, which are located in the terminal hole.

[0019] Furthermore, the insulating body also forms a limiting portion, one end of the docking portion of each terminal is connected to the corresponding fixing portion, the other end of the docking portion of each terminal is abutted against the lower surface of the limiting portion, and the lower surface of the other end of the docking portion of each terminal is not supported.

[0020] Furthermore, the fixing portions of the two edge terminals extend from the front edge of the insulating body to the rear edge of the insulating body along the front-to-back direction.

[0021] Furthermore, it also includes a reinforcement member, which includes a transverse member buried between the three front-row terminals and the three rear-row terminals and a longitudinal member extending from the front end edge of the insulating body to the rear end edge of the insulating body.

[0022] Compared with the prior art, the present invention has the characteristics of miniaturization, lightness and thinness, simple structure, easy manufacture and stable overall structure.

Brief Description of the Drawings

[0024] Figure 1 is a top view of the micro terminal assembly of the present application, which specifically shows a top view of the micro terminal assembly after being matched with an electronic card;

[0025] Figure 2 yes Figure 1 Middle is a top view of the electronic card after being separated from the micro terminal assembly;

[0026] Figure 3 is a three-dimensional schematic diagram of the micro terminal assembly of the present application;

[0027] Figure 4 yes Figure 3 The exploded view of the miniature terminal assembly shown in the figure specifically shows a three-dimensional schematic diagram of the insulating body, the terminal and the reinforcement after being separated from each other;

[0028] Figure 5 is a side view of the micro terminal assembly of the present application;

[0029] Figure 6 It is a front view of the micro terminal assembly of the present application. [Specific implementation method]

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the application can be combined with each other. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] In the description of the application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the application can be understood according to specific circumstances.

[0033] 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 comprising 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.

[0034] For the accuracy of the full text, all directions should be referred to as Figure 1 For reference, the length direction of the micro terminal assembly 100 is defined as the front-to-back direction (which is also the plug-in and pull-out direction of the electronic card 200 that cooperates with the micro terminal assembly 100 of the present application), and the width direction of the micro terminal assembly 100 is defined as the left-right direction.

[0035] Please refer to Figures 1 to 6 As shown, the present application discloses a miniature terminal assembly 100, comprising an insulating body 1 made of an insulating plastic material and eight terminals 2 fixed integrally to the insulating body 1 by injection molding. The insulating body is roughly in the shape of a rectangular sheet. The miniature terminal assembly 100 is generally used for welding to an internal docking circuit board (not shown) of an electronic device, and the miniature terminal assembly 100 cooperates with a metal shell (not shown) to form a card connector. A card insertion space is formed between the metal shell and the miniature terminal assembly 100, and the card insertion space is used to insert and accommodate an electronic card 200, and the electronic card 200 is connected to the docking circuit board through the terminal 2.

[0036] Please refer to Figures 2 to 6As shown, each of the terminals 2 is formed by stamping and bending a metal sheet, and includes a fixing portion 21 embedded in the insulating body 1, a first connecting portion 22 extending from a local position of the fixing portion 21 to the outside of the insulating body 1, and a docking portion 23 extending from another local position of the fixing portion 21 to the outside of the insulating body 1, and the first connecting portion 22 is used to electrically connect with the docking circuit board. The insulating body 1 is penetrated along the thickness direction corresponding to each docking portion 23 to form a terminal hole 10, and each of the docking portions 23 is correspondingly accommodated in the terminal hole 10. The docking portion 23 of each of the terminals 2 is in a long strip shape along the front-to-back direction, and each of the docking portions 23 protrudes from the insulating body 1 in the thickness direction of the insulating body 1 and forms a contact point 230. Specifically, each of the docking portions 23 protrudes from the insulating body 1 in the thickness direction of the insulating body 1 at the middle position in the front-to-back direction and forms the contact point 230.

[0037] In the present application, the eight terminals 2 include three front-row terminals 2 arranged in a row, three rear-row terminals 2 arranged in another row, and two edge terminals 2. The three front-row terminals 2 and the three rear-row terminals 2 are arranged in two rows along the front-to-back direction, and the two edge terminals 2 are respectively located in the middle position on the left and right sides of the three front-row terminals 2 and the three rear-row terminals 2. In this way, on the basis of meeting the arrangement requirements of the gold fingers matching the docking electronic card 200, the contact points 230 positions of each terminal 2 can be reasonably arranged.

[0038] Specifically, when the micro-terminal assembly 100 in the present application is designed to be sufficiently thin and small due to the needs of the usage scenario, the contact points 230 of the eight terminals 2 will be closer and closer to each other, thereby causing the risk of accidental contact with the gold finger (not shown) of the electronic card 200 (for example, the contact points of two adjacent terminals 2 contact the same gold finger on the electronic card 200). In order to reduce the occurrence of this risk, in the design scheme of the present application, firstly, while ensuring that there is a sufficient spacing between the contact points 230 of the three front-row terminals 2 and the contact points 230 of the three rear-row terminals 2, the structural characteristics of the terminals 2 (long strip structure) are fully utilized, and the other two edge terminals 2 are designed to be located in the middle of the left and right sides of the three front-row terminals 2 and the three rear-row terminals 2, respectively, so that even if the edge terminal 2 is very close to one of the adjacent front-row terminals 2 and / or one of the rear-row terminals 2, the contact points 230 can still maintain a large spacing.

[0039] Please refer to Figures 2 to 6As shown, the contact points 230 of the three front-row terminals 2 located on the left and the contact points 230 of the three rear-row terminals 2 located on the left are both located on the straight line AA extending in the front-back direction, the first connection parts 22 of the three front-row terminals 2 located on the left are located on the left side of the straight line AA, and the first connection parts 22 of the three rear-row terminals 2 located on the left are located on the left side of the straight line AA. The contact points 230 of the three front-row terminals 2 located on the right and the contact points 230 of the three rear-row terminals 2 located on the right are both located on the straight line BB extending in the front-back direction, the first connection parts 22 of the three front-row terminals 2 located on the left are located on the right side of the straight line BB, and the first connection parts 22 of the three rear-row terminals 2 located on the left are located on the right side of the straight line BB. The contact point 230 of the middle terminal 2 among the three front row terminals 2 and the contact point 230 of the middle terminal 2 among the three rear row terminals 2 are both located on the CC straight line extending in the front-to-back direction, the first connection portion 22 of the middle terminal 2 among the three front row terminals 2 is located on the CC straight line, and the first connection portion 22 of the middle terminal 2 among the three rear row terminals 2 is located on the CC straight line.

[0040] In the present application, the first connection portion 22 of each terminal is welded and fixed to the docking circuit board, wherein the first connection portions 22 of the three front-row terminals 2 and the first connection portions 22 of the three rear-row terminals 2 are located at the periphery of the insulating body 1, and are the main source of the holding force to ensure the stable fixation of the micro terminal assembly 100 of the present application to the docking circuit board. Therefore, for the stability of welding, the first connection portions 22 of the three front-row terminals 2 and the first connection portions 22 of the three rear-row terminals 2 need to be arranged relatively dispersed, which is conducive to welding, and can make the micro terminal assembly 100 as a whole stably fixed to the docking circuit board, not easy to warp, and have good flatness.

[0041] In the present application, there are eight terminal holes 10, and the eight terminal holes 10 correspond to the docking parts 23 of the eight terminals 2 respectively. Each terminal 2 also includes a second connection part 24, and the second connection parts 24 of the three front-row terminals 2 and the three rear-row terminals 2 all protrude into the corresponding terminal hole 10. The insulating body 1 is formed with a clearance hole (not marked) through the thickness direction at one end of each edge terminal 2, and the first connection part 22 of the edge terminal 2 protrudes into the clearance hole. The second connection part 24 of each edge terminal 2 extends from the fixing part 21 to the corresponding terminal hole 10 (one of the terminal holes 10 of the third front-row terminals 2 or one of the third rear-row terminals 2) along one end of the edge terminal 2 away from the first connection part 22. In the present application, the second connection part 24 plays a role in assisting welding fixation.

[0042] Please refer to Figures 2 to 4 As shown, the butt joint 23 and the second connection portion 24 of each of the three front-row terminals 2 and the three rear-row terminals 2, which are located in the terminal hole 10, do not extend directly. In this embodiment, specifically, the insulating body 1 further includes a plurality of isolation blocks 11, and the isolation blocks 11 separate the butt joint 23 and the second connection portion 24 of each of the three front-row terminals 2 and the three rear-row terminals 2, which are located in the terminal hole 10. Such a design can prevent the solder paste from climbing up to the butt joint 23 along the second connection portion 24 and the fixing portion 21 when the second connection portion 24 is soldered to the butt joint circuit board (that is, the anti-climbing solder function).

[0043] Please refer to Figures 2 to 4 As shown, the insulating body 1 is also formed with a plurality of limiting portions 101, one end of the docking portion 23 of each terminal 2 is connected to the corresponding fixing portion 21, and the other end of the docking portion 23 of each terminal 2 is abutted against the lower surface of the limiting portion 101, and the lower surface of the other end of the docking portion 23 of each terminal 2 is not supported, and the docking portion 23 of each terminal shown is in the shape of a simply supported beam. In the present application, the thickness of the limiting portion 101 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. The design that the lower surface of the other end of the docking portion 23 of each terminal 2 is not supported can further enable the limiting portion 101 to be designed to be thicker, further ensuring that the limiting portion 101 has a stronger structural strength. Such a design can ensure the limiting effect of the limiting portion 101 on the end of the docking portion 23 of the terminal 2, and at the same time, the insulating body 1 can be made as thin as possible.

[0044] Please refer to Figure 2 Cooperate Figure 4 As shown, the fixing portions 21 of the two edge terminals 2 extend from the front edge of the insulating body 1 to the rear edge of the insulating body 1 along the front-to-back direction. In addition, the micro terminal assembly 100 of the present application also includes a reinforcing member 3, and the reinforcing member 3 includes a transverse member 31 buried between the three front-row terminals 2 and the three rear-row terminals 2 and a longitudinal member 32 extending from the front edge of the insulating body 1 to the rear edge of the insulating body 1. With such a design, the fixing portions 21 of the two edge terminals 2 and the reinforcing member 3 form an integral structure that runs through the front-to-back and left-to-right directions of the insulating body 1, forming a criss-cross cross-shaped reinforcement effect, which can maximize the structural strength of the micro terminal assembly 100.

[0045] The coaxial connector of the present application is characterized by miniaturization, lightness and thinness, and at the same time has a simple structure, is easy to manufacture and has a stable overall structure.

[0046] The above descriptions are only some embodiments of the present application, not all embodiments. Any equivalent changes made to the technical solution of the present application by ordinary technicians in this field after reading the specification of the present application are covered by the claims of the present application.

Claims

1. A miniature terminal assembly, characterized in that: It comprises an insulating body and eight terminals fixed to the insulating body by injection molding, each of the terminals comprises a fixing portion embedded in the insulating body, a first connecting portion and a docking portion extending from the fixing portion out of the insulating body, the first connecting portion corresponding to the docking circuit board being electrically connected, the insulating body is penetrated along the thickness direction corresponding to each docking portion to form a terminal hole, the docking portion is accommodated in the terminal hole, the docking portion protrudes out of the insulating body in the thickness direction to form a contact point, the eight terminals comprise three front-row terminals arranged in one row, three rear-row terminals arranged in another row and two edge terminals, the three front-row terminals and the three rear-row terminals are arranged in two rows along the front-to-back direction, and the two edge terminals are respectively located in the middle of the left and right sides of the three front-row terminals and the three rear-row terminals; The butt joint of each terminal is in the shape of a long strip along the front-to-back direction; The fixing portions of the two edge terminals extend from the front edge of the insulating body to the rear edge of the insulating body along the front-to-back direction; A reinforcing member, comprising two longitudinal members extending in the front-to-back direction and a transverse member extending in a width direction perpendicular to the front-to-back direction, wherein the longitudinal members and the transverse members are connected in one piece, and the longitudinal members extend from the front end of the insulating body to the rear end of the insulating body; The transverse member is buried between the three front row terminals and the three rear row terminals; One of the longitudinal members is disposed between any two adjacent front-row terminals, and the longitudinal member is located between the corresponding two rear-row terminals.

2. The micro terminal assembly according to claim 1, characterized in that: The butting portion protrudes out of the insulating body in the thickness direction of the insulating body at a middle position in the front-to-back direction to form the contact point.

3. The micro terminal assembly according to claim 1 or 2, characterized in that: The contact points of the terminals on the left among the three front row terminals and the contact points of the terminals on the left among the three rear row terminals are both located on the straight line AA extending in the front-to-back direction, the first connection portions of the terminals on the left among the three front row terminals are located on the left side of the straight line AA, and the first connection portions of the terminals on the left among the three rear row terminals are located on the left side of the straight line AA.

4. The micro terminal assembly according to claim 1 or 2, characterized in that: The contact points of the terminals on the right side of the three front row terminals and the contact points of the terminals on the right side of the three rear row terminals are both located on the BB straight line extending in the front-to-back direction, the first connection parts of the terminals on the left side of the three front row terminals are located on the right side of the BB straight line, and the first connection parts of the terminals on the left side of the three rear row terminals are located on the right side of the BB straight line.

5. The micro terminal assembly according to claim 1 or 2, characterized in that: The contact point of the middle terminal among the three front row terminals and the contact point of the middle terminal among the three rear row terminals are both located on the CC straight line extending in the front-to-back direction, the first connection portion of the middle terminal among the three front row terminals is located on the CC straight line, and the first connection portion of the middle terminal among the three rear row terminals is located on the CC straight line.

6. The micro terminal assembly according to claim 1 or 2, characterized in that: There are eight terminal holes, which correspond to the docking parts of the eight terminals respectively. Each terminal also includes a second connecting part. The second connecting parts of the three front-row terminals and the three rear-row terminals all protrude into the corresponding terminal holes.

7. The micro terminal assembly according to claim 6, characterized in that: The butting portion of each of the three front-row terminals and the three rear-row terminals located in the terminal hole does not extend directly between the second connecting portion.

8. The micro terminal assembly according to claim 6, characterized in that: The insulating body further comprises a plurality of isolation blocks, and the isolation blocks separate the butting portion and the second connecting portion of each of the three front-row terminals and the three rear-row terminals, which are located in the terminal hole.

9. The micro terminal assembly according to claim 1 or 2, characterized in that: The insulating body also forms a limiting portion, one end of the docking portion of each terminal is connected to the corresponding fixing portion, the other end of the docking portion of each terminal is abutted against the lower surface of the limiting portion, and the lower surface of the other end of the docking portion of each terminal is not supported.

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