Double-contact signal terminal and FPC connector

Abstract

The utility model discloses a double-contact signal terminal and an FPC connector. The double-contact signal terminal comprises a first terminal main body and a second terminal main body which are overlapped with each other. The first terminal main body comprises a first substrate, a first supporting arm, a first pin and a first elastic arm. The second terminal body comprises a second substrate, a second supporting arm, a second pin and a second elastic arm. Wherein the first terminal main body and the second terminal main body are formed by integrally stamping and folding a metal plate, and the integrally connected part of the first terminal main body and the second terminal main body is a bending part. According to the utility model, by adopting the design of the double contacts and the double weld legs which are mutually overlapped side by side left and right, the structural strength of the signal terminal is greatly improved, the signal terminal is not easy to deform and damage, and the common problems of poor contact stability, low welding strength, easy falling of the insulating cover and the like of the existing FPC connector are effectively solved; and the performance and the reliability of the FPC connector are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric connector, especially relates to the field of FPC connector. BACKGROUND

[0002] In the era of rapid development of electronic technology, FPC (flexible printed circuit board) connector as the key component of connecting flexible circuit board and other circuit components in electronic equipment plays a vital role. Because of its flexible and convenient, simple assembly, strong practicality, it is widely used in the field of vehicle screen. Among them, the signal terminal is the core part of FPC connector, and its performance directly affects the overall performance and reliability of electronic equipment.

[0003] At present, the signal terminal of FPC connector has a series of problems. 1, due to the few contacts of the signal terminal, the contact tightness and reliability between the single point contact signal terminal and FPC flat cable are poor, especially when the electronic equipment is in the case of vibration, etc., the signal attenuation and distortion are prone to occur due to poor contact. 2, in the process of installation and use, the low strength signal terminal is easy to be affected by external force and deformed or broken, especially the buckling part of the insulating cover, which is easy to deform during assembly, and the insulating cover is also easy to be pulled out after buckling. 3, the pin of the signal terminal is also single point, the welding contact surface is small, the welding difficulty is increased, which is easy to cause the welding not firm such as air welding and virtual welding. In the process of using electronic equipment, due to the influence of factors such as vibration and temperature change, the welding point is easy to loosen or fall off, thereby affecting the transmission quality of signal. Although the thickness can be increased to a certain extent to improve the strength of the signal terminal, due to the limited length of the terminal force arm, it will also lead to the decrease of the elastic height, the poor elasticity, and the inability to well adapt to different connection environment and stress change in the connection process, which is easy to cause the connection not tight or loose. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of double-contact signal terminal and FPC connector to solve the deficiency of prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A double-contact signal terminal comprises a first terminal body and a second terminal body arranged in mutual overlap; a non-elastic contact part of the first terminal body comprises a first base plate, a first support arm formed by extending forward from an upper end of the first base plate, and a first leg formed by extending backward from a lower end of the first base plate; an elastic contact part of the first terminal body comprises a first elastic arm formed by extending forward from the lower end of the first base plate; a non-elastic contact part of the second terminal body comprises a second base plate, a second support arm formed by extending forward from an upper end of the second base plate, and a second leg formed by extending backward from a lower end of the second base plate; an elastic contact part of the second terminal body comprises a second elastic arm formed by extending forward from the lower end of the second base plate; and the non-elastic contact part of the second terminal body is partially integrally connected with the non-elastic contact part of the first terminal body.

[0007] Further, the first terminal body and the second terminal body are integrally stamped and folded from a metal plate piece, and the first terminal body and the second terminal body are integrally connected at a bending part.

[0008] Further, a first contact head protruding upward is arranged at a terminal end of the first elastic arm, and a second contact head protruding upward is arranged at a terminal end of the second elastic arm.

[0009] Further, the first contact head and the second contact head are identical in shape and arranged in mutual overlap in left and right sides.

[0010] Further, the second elastic arm is longer than the first elastic arm, and the second contact head and the first contact head are arranged in staggered arrangement in front and back.

[0011] Further, the second elastic arm is bent outward by a certain radian at a middle part to form an avoiding space for the first contact head to bend toward the second elastic arm, so that the first contact head and the second contact head are both located on a middle surface of the signal terminal.

[0012] Further, the non-elastic contact parts of the first terminal body and the second terminal body are partially fixed into an integral part by riveting or welding process.

[0013] Further, the first support arm and the second support arm are identical in shape and both are provided with a hook part and arranged in mutual overlap in left and right sides.

[0014] An FPC connector comprises an insulating shell, an insulating cover rotatably installed on the insulating shell, a ground sheet fixedly arranged in the insulating shell, and a double-contact signal terminal.

[0015] Compared with the prior art, the double-contact signal terminal has the following beneficial technical effects:

[0016] 1、Enhanced contact stability and signal integrity, for the elastic contact part of the signal terminal, the design of side by side or double-point contact in front and back, compared with the traditional single-point contact, double-point contact greatly improves the stability and reliability of the contact. In actual use, whether it is subjected to slight vibration or in a complex working environment, double-point contact can ensure that the signal terminal and the connection part maintain close and stable connection, effectively reducing the occurrence of signal interruption or interference caused by poor contact. In the welding end, the design of side-by-side double-welding foot contact is also adopted, which increases the welding contact area and significantly enhances the welding strength, which can better withstand external forces and environmental influences, making the welding more stable and reliable. In the use process of electronic equipment, the welding part is not easy to loosen or fall off, thereby ensuring the stable transmission of the signal and further enhancing the integrity of the signal.

[0017] 2、Improved the overall mechanical properties of the signal terminal, under the premise of ensuring appropriate elasticity, the overall strength of the signal terminal has been significantly improved, whether in the assembly and working state, it is more difficult to break or deform, and effectively strengthens the reliability of the connection between the shaft of the signal terminal and the insulating cover, ensuring the stable connection between the signal terminal and the FPC flat cable, providing a strong guarantee for the reliable work of the FPC connector. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings in the following description are only some embodiments, and other drawings can be obtained from these drawings without creative labor for those skilled in the art. In the drawings:

[0019] Figure 1 A structure diagram of an FPC connector provided by the embodiment of the present application Figure One ;

[0020] Figure 2 A structure diagram of an FPC connector provided by the embodiment of the present application Figure Two ;

[0021] Figure 3 A cross-sectional view of the first contact and the second contact in the FPC connector provided by the embodiment of the present application when the first contact and the second contact are arranged side by side and overlapped left and right;

[0022] Figure 4 A structure diagram of a signal terminal in the FPC connector provided by the embodiment of the present application when the first contact and the second contact are arranged side by side and overlapped left and right;

[0023] Figure 5 A cross-sectional view of the first contact and the second contact in the FPC connector provided by the embodiment of the present application when the first contact and the second contact are arranged side by side and overlapped left and right;

[0024] Figure 6 The utility model provides a structure schematic diagram of signal terminal when the second contact and the first contact of a kind of FPC connector are staggered arrangement in front and back for the embodiment of the utility model.

[0025] In the drawing, the component list represented by each mark is as follows:

[0026] 1-insulating body, 101-slot, 2-insulating cover, 201-rotating shaft, 3-ground sheet, 4-first terminal body, 401-first substrate, 402-first support arm, 403-first pin, 404-first elastic arm, 405-first contact, 5-second terminal body, 501-second substrate, 502-second support arm, 503-second pin, 504-second elastic arm, 505-second contact, 6-bending part, 7-hook part, 8-fixing point. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] The utility model embodiment provides a kind of FPC connector, comprising: insulating body 1, insulating cover 2, ground sheet 3 and signal terminal.Specifically:

[0029] As Figures 1 to 4 Shown, the insulating body 1 is the basic framework of FPC connector, its inside is equipped with multiple hole positions for supporting and fixing signal terminal, ground sheet 3 and other components, and the slot 101 for guiding the accurate insertion of flat cable to specified position, ensuring that the contact of signal terminal and flat cable can be correctly contacted.The insulating body 1 is integrally formed by injection molding process etc., can provide wrapping and protection for signal terminal, isolate each terminal, prevent short circuit and other faults caused by contact between terminals, ensure the stability and reliability of signal transmission, and provide certain mechanical strength for the whole connector, ensure the structural stability of the connector.

[0030] The insulating cover 2 is in a flat strip shape matching the insulating body 1 to ensure covering the connection part of the FPC flat cable and the signal terminal completely to protect the internal signal terminal and the flat cable connection part, prevent dust and sundries from entering the connector to affect the signal transmission and the stability of the connection. The insulating cover 2 is rotatably installed on the insulating body 1 to enable the insulating cover 2 to be flipped open and closed relative to the insulating body 1, facilitating the insertion and extraction of the FPC flat cable. The insulating cover 2 and the insulating body 1 are fixed by the elastic buckle to ensure the close connection of the FPC flat cable and the connector, avoiding the loose connection leading to poor signal transmission.

[0031] The ground sheet 3 is located in the fixed groove at both ends of the insulating body 1 and the bottom end is connected with the ground circuit on the circuit board to realize the grounding function, provide a stable reference potential for signal transmission, guide the interference signals such as static electricity and noise in the circuit to the ground to avoid the influence of the interference signals on the normal signal transmission, improve the quality and stability of the signal.

[0032] The signal terminal is the core component of the FPC connector, uniformly distributed in the hole position inside the insulating body 1 and corresponding to the contact position on the FPC flat cable to enable the accurate contact with the flat cable contact when the flat cable is inserted to realize the transmission of electronic signals. In the embodiment, the signal terminal is a double-contact signal terminal, which includes the first terminal body 4 and the second terminal body 5 arranged in mutual overlap.

[0033] As shown in Figures 3 to 6 In the embodiment, the non-elastic contact part of the first terminal body 4 includes the first base plate 401, the first support arm 402 and the first pin 403, and the elastic contact part of the first terminal body 4 is the first elastic arm 404. The first support arm 402 is formed by extending forward from the upper end of the first base plate 401, and the first support arm 402 is provided with a hook part 7 capable of rotating with the rotating shaft 201 on the insulating cover 2 to enable the insulating cover 2 to be flipped open and closed relative to the insulating body 1. The first elastic arm 404 is formed by extending forward from the lower end of the first base plate 401, and the end of the first elastic arm 404 is further provided with the first contact 405 protruding upward for contacting the contact surface of the FPC flat cable. The first pin 403 is formed by extending backward from the lower end of the first base plate 401 for welding and fixing with the circuit board or other electronic equipment.

[0034] Correspondingly, the second terminal body 5 and the first terminal body 4 are integrally stamped and folded from a metal plate. The non-elastic contact part of the second terminal body 5 comprises a second base plate 501, a second support arm 502, and a second pin 503. The elastic contact part of the second terminal body 5 is a second elastic arm 504. The non-elastic contact part of the second terminal body 5 is partially connected with the non-elastic contact part of the first terminal body 4. In this embodiment, the upper end of the second base plate 501 is integrally connected with the upper end of the first base plate 401, and the connection part is a bending part. The first base plate 401 and the second base plate 501 are folded along the bending part, forming a high-strength, double-contact, double-pin signal terminal structure. Of course, the bending part can also be at the lower end or other positions of the first base plate 401 and the second base plate 501.

[0035] The second support arm 502 is formed by extending forward from the upper end of the second base plate 501. The second support arm 502 has the same shape as the first support arm 402 and is also provided with a hook part 7. The second support arm 502 and the first support arm 402 are arranged side by side and overlap each other, so as to strengthen the buckling part of the signal terminal and make the connection between the signal terminal and the insulating cover 2 more reliable and avoid falling off. The second elastic arm 504 is formed by extending forward from the lower end of the second base plate 501. The end of the second elastic arm 504 is protruded upward to form a second contact head 505. The second contact head 505 has the same shape as the first contact head 405 and is arranged side by side and overlaps each other, forming a double-contact point arranged side by side. Of course, in order to adapt to more types of FPC flat cables, the second elastic arm 504 can be longer than the first elastic arm 404, so that the second contact head 505 and the first contact head 405 are arranged staggered in front and back. Further, the middle part of the second elastic arm 504 is bent outward with a certain curvature, forming a space for the first contact head 405 to bend towards the second elastic arm 504, so that the first contact head 405 and the second contact head 505 are both located on the middle surface of the signal terminal, forming a double-point contact arranged side by side. Compared with the traditional double-point contact signal terminal, the up-and-down floating space of the elastic arm of the signal terminal is larger, the contact is more stable and reliable, and the integrity of the signal is ensured. The second pin 503 is formed by extending backward from the lower end of the second base plate 501 and cooperates with the first pin 403 to form a double-pin, improving the welding strength and making the connection between the signal terminal and the circuit board more firm and reliable.

[0036] As Figures 4 to 6As shown, as a preferred embodiment, the non-elastic contact part of the first terminal body 4 and the second terminal body 5 is fixed integrally by riveting or welding process, the riveting or welding part is the fixed point 8, (i.e. the middle part of the first substrate 401 and the second substrate 501, the middle part of the first support arm 402 and the second support arm 502, and the upper end of the first pin 403 and the second pin 503), through the riveting or welding of multiple fixed points 8, the first terminal body 4 and the second terminal body 5 are formed integrally, and are not easy to be misaligned, under the premise of ensuring proper elasticity, effectively improve the overall mechanical strength of the signal terminal.

[0037] The above-mentioned embodiments only express the implementation of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the application patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A dual contact signal terminal, characterized by: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

2. A dual contact signal terminal according to claim 1, characterized in that: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

3. A dual contact signal terminal according to claim 1, wherein: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

4. A dual contact signal terminal according to claim 3, wherein: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

5. A dual contact signal terminal according to claim 3, wherein: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

6. A dual contact signal terminal according to claim 5, wherein: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

7. A dual contact signal terminal according to claim 1, wherein: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

8. A dual contact signal terminal according to claim 3, wherein: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion.

9. An FPC connector characterized by comprising: The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. The first terminal body (4) and the second terminal body (5) are integrally stamped and folded from a metal plate, and the first terminal body (4) and the second terminal body (5) are integrally connected at a bending portion. 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