Card seat connector with stably fixed terminals

Abstract

The utility model relates to the technical field of card holders, and particularly discloses a card holder connector with a stably fixed terminal, which comprises a guide connection terminal, the guide connection terminal comprises a fixed part and an inclined part formed by protruding and bending from the fixed part, a contact part is formed at one end, far away from the fixed part, of the inclined part, a through positioning hole is arranged on the fixed part, and the guide connection terminal is connected with the fixed part. The positioning holes are rectangular and extend in the length direction or / and the width direction of the fixing part. By means of the innovative design of the guide connection terminals and the ingenious limiting structure, the connector can be stably installed on a circuit mainboard and effectively connected with an external clamping piece, and the card seat connector has the advantages of being simple in structure, convenient to install, stable, reliable and the like and can be widely applied to various electronic devices needing the card seat connector.

Description

Technical Field

[0001] The utility model relates to the technical field of card sockets, and in particular discloses a card socket connector with firmly fixed terminals. Background Art

[0002] As an important medium for data transmission, memory cards play an indispensable role in many electronic products such as digital cameras, digital video cameras, and mobile phones. The key component for data exchange between memory cards and these devices is the card connector. When the memory card is properly inserted into the card connector, its built-in contact terminals will accurately dock with the terminal array of the memory card, instantly building an electrical connection bridge to ensure smooth data transmission. However, in the market, the card connector faces some challenges in its use. Frequent plugging and unplugging of memory cards, especially improper operation, such as excessive force or incorrect angle, may cause impact on the card connector, causing its structure to deform or the connection terminals to shake, thereby affecting the use effect and life. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a socket connector with firmly fixed terminals.

[0004] To achieve the above-mentioned purpose, the utility model provides a terminal firmly fixed card socket connector, comprising a conducting terminal, wherein the conducting terminal comprises a fixing portion, and an inclined portion protruding and bent from the fixing portion, wherein an end of the inclined portion away from the fixing portion forms a contact portion; a penetrating positioning hole is provided on the fixing portion, and the conducting terminal is assembled and arranged on an insulating body of the card socket connector, and the insulating body is provided with a limiting portion located in the positioning hole, and with the help of the cooperation between the limiting portion and the positioning hole, the conducting terminal is prevented from rotating or moving relative to the insulating body of the card socket connector, thereby ensuring that the conducting terminal is firmly positioned on the insulating body of the card socket connector.

[0005] The positioning hole is a non-circular hole, which may be rectangular, and is extended along the length direction and / or width direction of the fixing part. A rectangular positioning hole is punched out on the fixing part of the conductive terminal with the help of an external punch, and both ends of the positioning hole in the length direction are arc-shaped side walls to avoid flanging defects between the punch and the fixing part during punching and blanking. At the same time, the rectangular positioning hole can prevent the conductive terminal from rotating or moving relative to the insulating body of the card socket connector.

[0006] The fixed part serves as a stable foundation and provides support for the subsequent structure. We bend one end of the fixed part to form an inclined part. This design not only enhances the structural strength of the conductive terminal, but also provides a suitable angle and position for the subsequent contact with the memory card. The inclined part is further bent to form a fine contact end face, which can accurately dock with the terminal group on the external card (such as a memory card) to ensure accurate electrical connection. The fixed part is provided with a through positioning hole, which is rectangular. The positioning hole is set to a rectangular shape. When the injection molded top pressure piece is inserted, the top pressure piece is not easy to shake, which can achieve a better fixing effect. On the other hand, the through positioning hole provided on the fixed part can increase the impedance of the conductive terminal, achieve impedance matching, and improve the connection efficiency and transmission quality between the conductive terminal and the external card.

[0007] The end of the contact portion is bent to form a contact end face, and the contact end face is in conduction with the terminal group on the external card, and the end of the fixing portion away from the inclined portion is bent to form a welding portion, and the conductive terminal is welded and fixed to the circuit main board of the external electrical connector via the welding portion. By welding the welding portion to the circuit main board, the conductive terminal is firmly fixed to the circuit main board and an electrical connection is achieved.

[0008] The conductive terminal is provided with a blanking hole, which extends from the fixing portion to the contact portion, and penetrates the conductive terminal along the thickness direction of the conductive terminal. The blanking hole is provided to reduce the strength of the inclined portion itself and increase its elasticity. When the card is plugged in or out, the contact portion on the inclined portion with high hardness is prevented from scratching the conductive contact plate on the card. The design of the blanking hole also helps to improve the smoothness of plugging and unplugging, because the elastic deformation of the inclined portion can provide better compliance, making it easier to insert and unplug the card, while reducing friction and resistance.

[0009] The terminal-stable fixed card socket connector also includes an insulating base for installing the conductive terminal, the insulating base includes a bottom plate and an inner plate connected to the bottom plate, the fixing portion is located inside the bottom plate, the bottom plate has a non-circular limiting portion located in the positioning hole, and multiple groups of positioning protrusions are arranged around the outer side of the inner plate. It also includes a shell cover, the shell cover includes a top plate and an outer plate connected to the top plate, and multiple groups of positioning grooves are arranged around the outer plate. The multiple groups of positioning grooves of the shell cover are matched with the multiple groups of positioning protrusions of the insulating base to form a card slot. Under the joint action of the positioning structures on the inner plate and the outer plate, the precise positioning of the SD card is achieved, ensuring the accuracy and reliability of the electrical connection. The insulating materials used in the insulating base include plastics (such as LCP, i.e. liquid crystal polymer), ceramics and some special composite materials. These materials can not only effectively isolate electrical signals, prevent short circuits and interference, but also have certain wear resistance and corrosion resistance, and can adapt to various working environments.

[0010] The bottom plate is provided with a through hole, and the external pressing piece presses the fixing part through the through hole to limit the conductive terminal, and the molten plastic from the outside is injection molded to cover the insulating base outside the fixing part. The conductive terminal mounted on the insulating base can be fixed on the through hole through the injection molding process, thereby achieving a stable fixation of the conductive terminal. This fixing method not only enhances the connection strength between the conductive terminal and the insulating base, but also ensures the stability and reliability of the conductive terminal during subsequent use. Injection molding is a process of injecting molten plastic into a mold and cooling and solidifying to form a component of the desired shape and size. During the connector manufacturing process, the molten insulating material can be injected into the through hole, and the injected insulating material flows through the through hole on the bottom plate to the positioning hole of the conductive terminal. When the material cools and solidifies, the conductive terminal will be firmly fixed on the insulating base by the pressing piece formed after the injection molding, and the through hole on the bottom plate and the positioning hole of the conductive terminal become a channel connecting the bottom plate and the conductive terminal.

[0011] The push mechanism also includes a push part and a limit convex block arranged on one side of the push part. Pressing the push part drives the limit convex block to move, and the limit convex block cooperates with the external card to be loaded or removed. A limit strip is arranged on the inner side plate on the side away from the push mechanism. One side of the limit strip is bent to form a bent part. The end face of the bent part faces the card slot. The limit strip is used to limit the external card from shaking left and right after installation, resulting in unstable connection, poor contact and other problems.

[0012] When the user needs to insert an external card, the user can press the push part to drive the limit protrusion to move. In this process, the limit protrusion will first move to a predetermined position to provide space for the insertion of the card. Then, the user inserts the card into the card slot and continues to press the push part to move the limit protrusion further until the card is firmly fixed in the card slot. In this process, the limit protrusion plays a guiding and fixing role, ensuring that the card can be inserted smoothly and accurately.

[0013] The first angle between the plane where the fixing portion is located and the length direction of the inclined portion is 1-15°. The fixing portion is bent at a fixed angle so that the contact end face can be closer to the contact of the SD card, thereby enhancing the firmness and reliability of the contact. This design not only improves the efficiency of data transmission, but also extends the service life of the connection terminal and the SD card, bringing users a better user experience. The design of the angle will also affect the plug-in and pull-out force of external card components (such as SD cards). The appropriate angle can provide sufficient resistance to prevent the card components from accidentally falling off, and at the same time will not make the plug-in and pull-out process too difficult.

[0014] The fixing portion is provided with fins located in the insulating base. The design of the fins can increase the contact area between the fixing portion and the insulating base, improve the stability of the connection by physical locking, and prevent loosening or falling off under vibration or external force. The fins are usually made of the same material as the insulating base to ensure good compatibility and bonding strength. However, in some cases, a material with better thermal conductivity may be selected to make the fins.

[0015] The limiting protrusion is provided with a groove on the side facing the bottom plate. When the pushing part is pressed to drive the limiting protrusion to move, the conductive terminal arranged on the bottom plate passes through the groove without being affected by the limiting protrusion. The position of the groove should match the layout of the conductive terminal to ensure that the conductive terminal can accurately pass through the groove when the pushing mechanism is working. When the user presses the pushing part, the pushing part will drive the limiting protrusion to move together. In this process, due to the design of the groove on the limiting protrusion facing the side of the bottom plate, the conductive terminal on the bottom plate can pass through the groove smoothly without being blocked by the limiting protrusion. In this way, the user can easily load or remove the external card (such as an SD card) into or out of the connector without worrying about the operational difficulties or damage risks caused by interference problems.

[0016] The beneficial effects of the utility model: the innovative structural composition of the conductive terminal and the through hole of the insulating base can be used to fix the conductive terminal on the insulating base through the injection molding process, thereby further firmly fixing the conductive terminal on the basis of the existing technology, realizing the stable installation of the connector on the circuit board and the effective connection with the external card component, having the advantages of simple structure, easy installation, stability and reliability, and can be widely used in various electronic devices that require a card socket connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the conductive terminal of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the conductive terminal of the utility model from another perspective;

[0019] Figure 3 It is a schematic diagram of the combined structure of the shell cover and the insulating base of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the shell cover of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the insulating base of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the pushing mechanism of the utility model.

[0023] Reference numerals include:

[0024] 1. Conducting terminal; 2. Fixing part; 3. Inclined part; 400. Contact part; 4. Contact end face; 500. Positioning hole; 600. Blanking hole; 5. Welding part; 6. Insulating base; 7. Bottom plate; 8. Inner plate; 9. Positioning protrusion; 11. Shell cover; 12. Top plate; 13. Outer plate; 14. Positioning groove; 15. Card slot; 16. Through hole; 17. Pushing mechanism; 18. Pushing part; 19. Limiting protrusion; 21. Limiting strip; 22. Bending part; 25. First angle. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0026] See also Figures 1 to 6 As shown, a terminal firmly fixed card socket connector of the utility model comprises a conducting terminal 1, the conducting terminal 1 comprises a fixing portion 2, an inclined portion 3 protruding from the fixing portion 2 and bent, the end of the inclined portion 3 away from the fixing portion 2 forms a contact portion 400; the fixing portion 2 is provided with a through positioning hole 500. In actual use, the conducting terminal 1 is assembled and arranged on the insulating body of the card socket connector, and the insulating body is provided with a limiting portion located in the positioning hole 500. With the cooperation of the limiting portion and the positioning hole 500, the conducting terminal 1 is prevented from rotating or moving relative to the insulating body of the card socket connector, ensuring that the conducting terminal 1 is firmly positioned on the insulating body of the card socket connector.

[0027] In this embodiment, the positioning hole 500 is a non-circular hole, which may be rectangular. In actual use, a rectangular positioning hole 500 is punched out on the fixing portion 2 of the conductive terminal 1 with the help of an external punch. The two ends of the positioning hole 500 in the length direction are arc-shaped side walls to avoid flanging defects between the punch and the fixing portion 2 during punching and blanking. The positioning hole 500 is extended along the length direction and / or width direction of the fixing portion 2. Preferably, the positioning hole 500 is extended along the length direction of the fixing portion 2.

[0028] The fixing part 2 serves as a stable foundation to provide support for the subsequent structure. From one end of the fixing part 2, we bend it to form an inclined part 3. This design not only enhances the structural strength of the conductive terminal 1, but also provides a suitable angle and position for the subsequent contact with the memory card. The inclined part 3 is further bent to form a fine contact end face 4. This contact end face 4 can accurately dock with the terminal group on the external card (such as a memory card) to ensure the accuracy of the electrical connection. A through positioning hole 500 is provided on the fixing part 2. The positioning hole 500 is rectangular. The positioning hole 500 is set to a rectangular shape. When the injection molding top pressure piece is inserted, the top pressure piece is not easy to shake, which can achieve a better fixing effect. On the other hand, the through positioning hole 500 provided on the fixing part 2 can increase the impedance of the conductive terminal 1, achieve impedance matching, and improve the connection efficiency and transmission quality between the conductive terminal and the external card.

[0029] The end of the contact portion 400 is bent to form a contact end face 4, which is in conduction with the terminal group on the external card, and the end of the fixing portion 2 away from the inclined portion 3 is bent to form a welding portion 5, and the conductive terminal 1 is welded and fixed to the circuit board of the external electrical connector via the welding portion 5. By welding the welding portion 5 to the circuit board, the conductive terminal 1 is firmly fixed to the circuit board and an electrical connection is achieved.

[0030] The conductive terminal 1 is provided with a blanking hole 600, which is extended from the fixing portion 2 toward the contact portion 400, and penetrates the conductive terminal 1 along the thickness direction of the conductive terminal 1. The blanking hole 600 is provided to reduce the strength of the inclined portion 3 itself and increase its elasticity, so that when the card is plugged in or out, the contact portion 400 on the inclined portion 3 with high hardness can be prevented from scratching the conductive contact pad on the card.

[0031] The terminal-fixed card socket connector also includes an insulating base 6 for mounting the conductive terminal 1. The insulating base 6 includes a bottom plate 7 and an inner plate 8 connected to the bottom plate 7. The fixing portion 2 is located inside the bottom plate 7. The bottom plate 7 has a non-circular limiting portion located inside the positioning hole 500. A plurality of positioning protrusions 9 are arranged around the outer side of the inner plate 8. The terminal-fixed card socket connector also includes a shell cover 11. The shell cover 11 includes a top plate 12 and an outer plate 13 connected to the top plate 12. A plurality of positioning grooves 14 are arranged around the outer plate 13. The plurality of positioning grooves 14 of the shell cover 11 are matched with the plurality of positioning protrusions 9 of the insulating base 6 to form a card insertion slot 15. A cavity structure is provided on the insulating base 6. The conductive terminal 1 mounted on the insulating base 6 protrudes from the cavity structure of the insulating base 6. The end face of the contact portion of the conductive terminal 1 faces the card insertion slot 15. When the external card is inserted into the card insertion slot 15, it is in close contact with the end face of the conductive terminal 1 to achieve electrical connection.

[0032] The positioning structures on the inner plate 8 and the outer plate 13 work together to achieve accurate positioning of the SD card, ensuring the accuracy and reliability of the electrical connection. The insulating materials used in the insulating base 6 include plastics (such as LCP, i.e., liquid crystal polymer), ceramics, and some special composite materials. These materials can not only effectively isolate electrical signals, prevent short circuits and interference, but also have certain wear resistance and corrosion resistance, and can adapt to various working environments.

[0033] The bottom plate 7 is provided with a through hole 16, and the external pressing member presses the fixing part 2 through the through hole 16 to limit the conductive terminal 1, and the molten plastic from the outside is injection molded to cover the insulating base 6 outside the fixing part 2. The conductive terminal 1 installed on the insulating base 6 can be fixed on the through hole 16 through the injection molding process, thereby achieving a stable fixation of the conductive terminal 1. This fixing method not only enhances the connection strength between the conductive terminal 1 and the insulating base 6, but also ensures the stability and reliability of the conductive terminal 1 during subsequent use. Injection molding is a process in which molten plastic is injected into a mold and cooled and solidified to form a component of a desired shape and size. During the connector manufacturing process, molten insulating material can be injected into the through hole 16, and the injected insulating material flows through the through hole 16 on the bottom plate 7 to the positioning hole 500 of the conductive terminal 1. When the material cools and solidifies, the conductive terminal 1 will be firmly fixed on the insulating base 6 by the top pressing piece formed after injection molding, and the through hole 16 on the bottom plate 7 and the positioning hole 500 of the conductive terminal 1 become a channel connecting the bottom plate 7 and the conductive terminal 1.

[0034] It also includes a pushing mechanism 17, which includes a pushing part 18 and a limiting protrusion 19 arranged on one side of the pushing part 18. Pressing the pushing part 18 drives the limiting protrusion 19 to move, and the limiting protrusion 19 cooperates with the external card to be loaded or removed. The pushing mechanism 17 generally adopts a pushing device that automatically pops out after the elastic card block is pressed. The pushing mechanism 17 is provided with an elastic card block for engaging with the SD card. The pushing mechanism 17 is connected with a pull rod. A slide groove for sliding one end of the pull rod is provided in the pushing mechanism 17. The slide groove is provided with a limiting groove for engaging the end of the pull rod. One end of the pull rod is rotatably connected to the pushing mechanism 17 and a push rod extends from the end. One end of the push rod is abutted against the side of the elastic card block away from the SD card. The slider is provided with a receiving groove for the push rod to rotate. After pressing the elastic card block, the push rod places or removes the external card by moving back and forth in the receiving groove.

[0035] When the user needs to insert an external card, the user can press the push portion 18 to drive the limiting protrusion 19 to move. In this process, the limiting protrusion 19 will first move to a predetermined position to provide space for the insertion of the card. Then, the user inserts the card into the card slot 15 and continues to press the push portion 18 to move the limiting protrusion 19 further until the card is firmly fixed in the card slot 15. In this process, the limiting protrusion 19 plays a guiding and fixing role, ensuring that the card can be smoothly and accurately inserted.

[0036] A limit strip 21 is provided on the inner side plate 8 of the insulating base 6 away from the pushing mechanism 17. One side of the limit strip 21 is bent to form a bent portion 22. The end face of the bent portion 22 faces the card insertion slot 15. When the external card is inserted into the card insertion slot 15, the limit strip 21 and the inner side strip of the insulating base 6 clamp the external card. The limit strip 21 is used to limit the external card from shaking left and right after installation, resulting in problems such as unstable connection and poor contact.

[0037] The first angle 25 between the plane where the fixing portion 2 is located and the length direction of the inclined portion 3 is 1-15°. The fixing portion is bent at a fixed angle so that the contact end face 4 can be closer to the contact of the SD card, thereby enhancing the firmness and reliability of the contact. This design not only improves the efficiency of data transmission, but also extends the service life of the connection terminal and the SD card, bringing users a more excellent user experience. The design of the angle will also affect the plug-in and pull-out force of external card components (such as SD cards). The appropriate angle can provide sufficient resistance to prevent the card components from accidentally falling off, and at the same time will not make the plug-in and pull-out process too difficult.

[0038] The through holes 16 are provided with multiple groups, and the shape of the through holes 16 can be circular or rectangular. The circular through holes 16 are one of the most common shapes, and they have the advantages of simple structure, convenient processing, and uniform force. The circular through holes 16 are suitable for most fixing requirements, especially in the case of rotating or sliding fit, the circular through holes 16 can provide better smoothness and wear resistance. The rectangular through holes 16 have a larger area and a clearer boundary, and are suitable for the situation where large parts need to be accurately positioned or fixed. The rectangular through holes 16 can also adjust the aspect ratio according to actual needs to adapt to parts of different shapes and sizes. In addition, the rectangular through holes 16 can also provide additional guiding effects in some cases to help the parts to be inserted or positioned more accurately. In practical applications, the designer will comprehensively consider the number, shape and layout of the through holes 16 according to the specific needs of the connector, the use environment, the manufacturing cost and other factors. The design of multiple groups of through holes 16 and circular or rectangular through holes 16 provides more flexibility and practicality for the terminal fixed card socket connector. This design not only enhances the stability and reliability of the connector, but also improves its adaptability and heat dissipation performance.

[0039] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0040] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A terminal-fixed card socket connector, comprising a conductive terminal (1), the conductive terminal (1) comprising a fixed portion (2), an inclined portion (3) protruding from the fixed portion (2) and bent to form a contact portion (400); the inclined portion (3) having an end away from the fixed portion (2) forming a contact portion (400); characterized in that: The fixing portion (2) is provided with a penetrating positioning hole (500).

2. A terminal firmly fixed card socket connector according to claim 1, characterized in that: The positioning hole (500) is a non-circular hole, and the positioning hole (500) is extended along the length direction and / or the width direction of the fixing portion (2).

3. The terminal-fixed card socket connector according to claim 2, characterized in that: The positioning hole (500) is rectangular.

4. The terminal-fixed card socket connector according to claim 1, characterized in that: The end of the contact portion (400) is bent to form a contact end face (4), and the contact end face (4) is in electrical communication with a terminal group on an external card. One end of the fixing portion (2) away from the inclined portion (3) is bent to form a welding portion (5), and the conductive terminal (1) is welded and fixed to a circuit board of an external electrical connector via the welding portion (5).

5. The terminal-fixed card connector according to claim 1, characterized in that: The conductive terminal (1) is provided with a blanking hole (600), the blanking hole (600) is extended from the fixing portion (2) in the direction of the contact portion (400), and the blanking hole (600) penetrates the conductive terminal (1) along the thickness direction of the conductive terminal (1).

6. The terminal-fixed card socket connector according to claim 1, characterized in that: The terminal-fixed card socket connector also includes an insulating base (6) for mounting the conductive terminal (1), the insulating base (6) including a bottom plate (7) and an inner plate (8) connected to the bottom plate (7), the fixing portion (2) is located inside the bottom plate (7), the bottom plate (7) has a non-circular limiting portion located inside the positioning hole (500), and a plurality of groups of positioning protrusions (9) are provided around the outer side of the inner plate (8).

7. The terminal-fixed card connector according to claim 5, characterized in that: The invention also comprises a shell cover (11), wherein the shell cover (11) comprises a top plate (12) and an outer plate (13) connected to the top plate (12), wherein a plurality of groups of positioning grooves (14) are arranged around the outer plate (13), and the plurality of groups of positioning grooves (14) of the shell cover (11) are matched with a plurality of groups of positioning protrusions (9) of the insulating base (6) to form a card insertion slot (15).

8. The terminal-fixed card connector according to claim 6, characterized in that: The bottom plate (7) is provided with a through hole (16), and an external pressing member presses the fixing part (2) via the through hole (16) to limit the position of the conductive terminal (1), and the external molten plastic is injection-molded to cover the insulating base (6) outside the fixing part (2).

9. The terminal-fixed card socket connector according to claim 5, characterized in that: The terminal-fixed card socket connector also includes a pushing mechanism (17), the pushing mechanism (17) including a pushing portion (18) and a limiting protrusion (19) arranged on one side of the pushing portion (18), the pushing portion (18) is pressed to drive the limiting protrusion (19) to move, the limiting protrusion (19) cooperates with the external card to be inserted or removed, and a limiting strip (21) is provided on the inner side plate (8) on the side of the insulating base (6) away from the pushing mechanism (17), one side of the limiting strip (21) is bent to form a bent portion (22), the end face of the bent portion (22) faces the card insertion slot (15), and the limiting strip (21) is used to limit the movement of the external card.

10. The terminal-fixed card socket connector according to claim 1, characterized in that: The first angle (25) between the plane where the fixing portion (2) is located and the length direction of the inclined portion (3) is 1-15°.

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