Ultra-thin SIM card connector

Abstract

The utility model discloses an ultra-thin SIM card connector, which comprises an insulating seat body and two rows of elastic terminals inserted and formed on the insulating seat body, the insulating seat body comprises a top surface, a bottom surface, a plurality of terminal holes and a plurality of slug holes, the terminal holes and the slug holes vertically penetrate through the insulating seat body, and the elastic terminals are arranged on the top surface of the insulating seat body. Each elastic terminal comprises a base part embedded in the insulating seat body, an arc-shaped contact part extending backwards and upwards out of the top surface from the base part and a welding pin extending from the base part, and the slug holes are configured to cut the elastic terminals and realize separation between the adjacent elastic terminals. The requirement for the machining precision of the insulating seat body and the elastic terminals is lowered, the stability of the elastic terminals is effectively enhanced, and the elastic terminals are prevented from accidentally falling off from the insulating seat body.

Description

Technical Field

[0001] This utility model relates to a SIM card connector, and more particularly to a structurally stable ultra-thin SIM card connector. Background Technology

[0002] A SIM card connector, also known as a SIM card socket or adapter, is a miniature interface component designed specifically for mobile phones and other mobile communication devices. Its core function is to connect the SIM card (i.e., the user identification module). As a key component of the GSM digital mobile communication system, the SIM card is responsible for storing user identity information and service data. The SIM card connector acts as a bridge, enabling the establishment of an electrical connection between the SIM card and the mobile phone circuit board, thus realizing the transmission of data and power.

[0003] When a SIM card is inserted into a phone, the phone's power supply provides power to the SIM card as needed, ensuring voltage matching. At this time, the SIM card's contacts make close contact with the spring terminals inside the connector. These spring terminals not only provide a stable physical connection but also ensure continuous transmission of electrical signals. This allows the microprocessor, memory, and other components inside the SIM card to connect to the phone's circuit board via the spring terminals, enabling efficient data transmission and interaction.

[0004] Given the slim and lightweight nature of SIM card connectors, assembling flexible terminals using an insertion method presents numerous challenges: the assembly process is difficult and inefficient, while requiring extremely high precision in the machining of the insulating base and terminals; furthermore, this method can easily lead to loose terminals, or even terminals falling off the insulating base, resulting in unstable flatness and alignment of the terminal soldering pins, thus weakening the electrical contact between the SIM card and the terminals.

[0005] Therefore, it is necessary to design a new SIM card connector to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide an ultra-thin SIM card connector with improved structural strength.

[0007] To achieve the aforementioned objectives, the present invention adopts the following technical solution: an ultra-thin SIM card connector, comprising an insulating base and two rows of elastic terminals inserted into the insulating base. The insulating base includes a top surface, a bottom surface, a plurality of terminal holes, and a plurality of escape holes. The terminal holes and the escape holes penetrate the insulating base vertically. Each elastic terminal includes a base embedded in the insulating base, an arc-shaped contact portion extending backward and upward from the base to the top surface, and a soldering foot extending from the base. The contact portion is partially received in the corresponding terminal hole, and the soldering foot is located in the corresponding terminal hole. The escape holes are configured to cut the elastic terminals, thereby achieving separation between adjacent elastic terminals.

[0008] In a further improvement, the front and rear ends of the contact portion are located at the terminal hole, respectively.

[0009] In a further improvement, the top of the contact portion is provided with a long strip-shaped protrusion extending from front to back for contacting the contacts of the SIM card.

[0010] In a further improvement, some of the elastic terminals are provided with two welding feet, located on the left and right sides of the corresponding contact portion; other elastic terminals are provided with only one welding foot, located on the left or right side of the corresponding contact portion.

[0011] In a further improvement, the resilient terminal also includes a side extending forward from the left and / or right end of the base, the side being embedded in the insulating base.

[0012] In a further improvement, some of the elastic terminals are also provided with a rear side connected to the front end of the side, the rear side extending to the left and right and embedded in the insulating base.

[0013] In a further improvement, the elastic terminal located in the rear row is also provided with a reinforcing welding foot extending forward from the left or right side of the side, and the insulating base is provided with a through hole to accommodate the reinforcing welding foot, the through hole penetrating the insulating base vertically.

[0014] In a further improvement, the elastic terminal also includes a fixing part connected to the front end of the contact portion, the fixing part being embedded in the insulating base.

[0015] In a further improvement, the insulating base is provided with a through hole into which the fixing part extends forward, and the through hole extends vertically through the insulating base.

[0016] In a further improvement, the insulating base is provided with a side wall portion surrounding the terminal hole, and the material escape hole is provided through the corresponding side wall portion.

[0017] The flexible terminals of this SIM card connector are securely fixed to the insulating base using an insertion molding technique. This design not only relaxes the requirements for the machining precision of the insulating base and the flexible terminals but also effectively enhances the stability of the flexible terminals, preventing them from accidentally detaching from the insulating base. Simultaneously, this fixing method ensures the flatness and precise alignment of the soldering feet of the flexible terminals, thereby optimizing the electrical connection performance between the SIM card and the circuit board. Attached Figure Description

[0018] Figure 1 This is a perspective view of the ultra-thin SIM card connector of this utility model.

[0019] Figure 2This is a perspective view of the ultra-thin SIM card connector of this utility model from another angle.

[0020] Figure 3 This is an exploded perspective view of the ultra-thin SIM card connector of this utility model.

[0021] Figure 4 This is a perspective view of the insulating base of the ultra-thin SIM card connector of this utility model. Detailed Implementation

[0022] Please see Figures 1 to 4 As shown, the ultra-thin SIM card connector 100 of this utility model is used to be installed on the circuit board of a mobile phone or other mobile communication device to realize the transmission of data and power between the SIM card and the circuit board. The SIM card connector 100 includes an insulating base 10 and two rows of elastic terminals 20, with the elastic terminals 20 inserted and formed in the insulating base 10.

[0023] The insulating base 10 is a horizontal plate shape, including a top surface 11, a bottom surface 12, a plurality of terminal holes 13, and a plurality of material escape holes 14. The front end of the insulating base 10 is provided with an inclined surface 15 for guiding the SIM card to be inserted above the top surface 11. The top surface 11 and the bottom surface 12 are both horizontal surfaces. The bottom surface 12 is provided with positioning posts 121 for cooperating with the positioning holes of the circuit board. Each terminal hole 13 and each material escape hole 14 penetrates the insulating base 10 vertically.

[0024] The terminal holes 13 are arranged in two rows, one in front and one behind. Each terminal hole 13 corresponds to one or two elastic terminals 20. The insulating base 10 is provided with a side wall portion 16 surrounding each terminal hole 13. Each material escape hole 14 is provided through the corresponding side wall portion 16.

[0025] After two rows of elastic terminals 20 are connected together and integrally inserted into the insulating base 10, a cutting process is performed in each escape hole 14 to achieve separation between adjacent elastic terminals 20 in the front and rear and left and right directions. Each elastic terminal 20 includes a base 21, an arc-shaped contact portion 22 extending backward and upward from the base 21, a welding foot 23 extending forward and downward from the base 21, and a fixing portion 24 connected to the rear end of the contact portion 22. The bases 21 of the two rows of elastic terminals 20 are located on the same horizontal plane. The base 21 and the fixing portion 24 are embedded in the insulating base 10. The insulating base 10 has a through hole 17 for the fixing portion 24 to extend forward, and the through hole 17 penetrates the insulating base 10 vertically. The front and rear ends of the contact portion 22 are located in the corresponding terminal hole 13, and the welding foot 23 is located in the corresponding terminal hole 13. The top of the contact portion 22 has a long strip-shaped protruding rib 220 extending forward and backward to enhance the electrical contact effect with the SIM card contacts. Some of the elastic terminals 20 are provided with two welding feet 23, located on the left and right sides of the corresponding contact portion 22, while other elastic terminals 20 are provided with only one welding foot 23, located on the left or right side of the corresponding contact portion 22.

[0026] The resilient terminal 20 also includes a side 25 extending forward from the left and / or right end of the base 21. Some resilient terminals 20 are also provided with a rear side 26 connected to the front end of the side 25. The rear side 26 extends to the left and right. The side 25 and the rear side 26 are embedded in the insulating base 10, which strengthens the fixing strength of the resilient terminal 20 on the insulating base 10.

[0027] Furthermore, the resilient terminals 20 located in the rear row are also provided with reinforcing welding feet 28 extending forward from the left or right side of the side 25. The insulating base 10 is provided with through holes 18 to accommodate each reinforcing welding foot 28, and the through holes 18 also penetrate the insulating base 10 vertically.

[0028] The resilient terminal 20 of the SIM card connector 100 of this invention is firmly fixed inside the insulating base 10 using an insertion molding technique. This design not only relaxes the requirements for the processing precision of the insulating base 10 and the resilient terminal 20, but also effectively enhances the stability of the resilient terminal 20, preventing it from accidentally falling out of the insulating base 10. At the same time, this fixing method ensures the flatness and precise alignment of the soldering feet 23 of the resilient terminal 20, thereby optimizing the electrical connection performance between the SIM card and the circuit board.

[0029] Although preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will recognize that various modifications, additions, and substitutions are possible without departing from the scope and spirit of the present invention as disclosed in the appended claims.

Claims

1. An ultra-thin SIM card connector, characterized in that: The device includes an insulating base and two rows of resilient terminals inserted into the insulating base. The insulating base includes a top surface, a bottom surface, a plurality of terminal holes, and a plurality of escape holes. The terminal holes and the escape holes penetrate the insulating base vertically. Each resilient terminal includes a base embedded in the insulating base, an arc-shaped contact portion extending backward and upward from the base to the top surface, and a welding leg extending from the base. The contact portion is partially received in the corresponding terminal hole, and the welding leg is located in the corresponding terminal hole. The escape holes are configured to cut the resilient terminals to achieve separation between adjacent resilient terminals.

2. The ultra-thin SIM card connector according to claim 1, characterized in that: The front and rear ends of the contact portion are located at the terminal hole, respectively.

3. The ultra-thin SIM card connector according to claim 1, characterized in that: The top of the contact portion is provided with a protruding rib for contacting the contacts of the SIM card.

4. The ultra-thin SIM card connector according to claim 1, characterized in that: Some of the elastic terminals have two welding feet, located on the left and right sides of the corresponding contact portion; other elastic terminals have only one welding foot, located on the left or right side of the corresponding contact portion.

5. The ultra-thin SIM card connector according to claim 1, characterized in that: The resilient terminal also includes a side extending forward from the left and / or right end of the base, the side being embedded in the insulating base.

6. The ultra-thin SIM card connector according to claim 5, characterized in that: Some of the resilient terminals are also provided with a rear side connected to the front end of the side, the rear side extending to the left and right and embedded in the insulating base.

7. The ultra-thin SIM card connector according to claim 5, characterized in that: The elastic terminal located in the rear row is also provided with a reinforcing welding foot extending forward from the left or right side of the side, and the insulating base is provided with a through hole to accommodate the reinforcing welding foot, the through hole penetrating the insulating base vertically.

8. The ultra-thin SIM card connector according to claim 1, characterized in that: The elastic terminal also includes a fixing part connected to the front end of the contact portion, the fixing part being embedded in the insulating base.

9. The ultra-thin SIM card connector according to claim 8, characterized in that: The insulating base is provided with a through hole for the fixing part to extend forward, and the through hole extends through the insulating base from top to bottom.

10. The ultra-thin SIM card connector according to claim 1, characterized in that: The insulating base has sidewalls surrounding the terminal hole, and the material escape hole is provided through the corresponding sidewall.

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