A flip-type FPC connector

Abstract

The present invention relates to the technical field of manufacturing electrical connectors, in particular to a flip-type FPC connector. The wiring terminals and the mechanical terminals are independent of each other and insulated from each other. A plurality of mechanical terminals cooperate with each other to elastically apply pressure and limit the flipping pressure member. When the flipping pressure member is locked, the flexible cable is elastically pressed and electrically conducted by a plurality of wiring terminals in cooperation. The flipping pressure member is formed by combining a plastic flipping pressure plate and a metal shell. The left metal locking member and the right metal locking member cooperate with each other to bear and lock the flipping pressure member. The left metal locking member and the right metal locking member are grounded, and the metal shell that is electrically conducted simultaneously with the left metal locking member and the right metal locking member is indirectly grounded, and at least one of the plurality of wiring terminals and the plurality of mechanical terminals are grounded. In this way, not only is it ensured that the signal transmission process is not affected by electromagnetic waves and noise, but also it is beneficial to ensure that the flipping pressure member always maintains a reliable locked state during the signal transmission process.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connector manufacturing, and more particularly to a flip-type FPC connector. Background Art

[0002] A flexible flat cable (FFC) is a signal transmission component, which has the advantages of being arbitrarily bendable and high signal transmission, and thus is widely used in many electronic products. The flexible flat cable is used in combination with an FPC connector and an electrical connector to transmit signals from one end to the other end to achieve the purpose of signal transmission. It is usually applied in various fields such as digital communication products, portable electronic products, computer peripheral devices, measuring instruments, and automotive electronics.

[0003] Chinese Patent CN212810617U discloses a flip-type FPC connector. The flip-type FPC connector mainly consists of an insulating rubber seat, a flipping member, and a wiring terminal. The wiring terminal is composed of a front cantilever, a rear connecting arm, and a lower cantilever connected in sequence, and is approximately in the shape of a "C" as a whole. The flipping member is hinged to the insulating rubber seat and can freely perform a circumferential flipping action when subjected to an external force. The flipping member is located directly in front of the rear connecting arm and is horizontally disposed between the front cantilever and the lower cantilever. Along its width direction, a plurality of non-circular blocking arms are formed on the flipping member and are arranged in a linear array. Near its free end, a semi-open receiving groove is formed on the front cantilever. The plurality of semi-open receiving grooves cooperate to limit the flipping member. During the process of circumferentially flipping the flipping member, each non-circular blocking arm performs a circumferential rotational movement in the corresponding semi-open receiving groove to achieve / release the pressing and locking of the flexible flat cable. A lower inner extension protrusion is formed at the free end of the lower cantilever. After the flexible flat cable is inserted, its bottom wall is elastically pressed by a plurality of lower inner extension protrusions arranged in a linear array to facilitate signal transmission.

[0004] Furthermore, it can be seen from the above description that the plurality of connection terminals not only have the function of electrically connecting the flexible flat cable to transmit signals, but also cooperate with each other to have the functions of elastic pressure application and position limiting flipping member. In actual application, this flip-up FPC connector has the following obvious defects, which are specifically manifested as follows: 1) As far as the existing technology is concerned, the wiring terminal adopts a plug-in method to realize assembly with the insulating rubber seat. In addition, the bonding area between the wiring terminal and the insulating rubber seat is relatively limited, and the bonding strength and bonding stability are extremely poor. In the process of flipping the flip part, the upper cantilever is continuously subjected to the reaction force from the flip part. After multiple flipping operations, the wiring terminal is very likely to loosen or even come loose relative to the insulating rubber seat, which will inevitably affect the stability of signal transmission; 2) The wiring terminal has both a lower cantilever for realizing signal transmission and an upper cantilever for realizing the limit of the flip part, and the two are connected and electrically conductive with the help of a rear connecting arm. In the process of electrical conduction, the charge distribution surface is large, which will inevitably affect the stability and reliability of signal transmission, and the electromagnetic wave and crosstalk interference problems are serious; 3) After a period of use, the conductive layer of the flexible cable is seriously worn, which will inevitably affect the stability and reliability of signal transmission. The reason is that after the flexible flat cable is pressed and conducted by multiple terminals, due to the design defects of the terminals, the elastic recovery ability of the terminals after combining with the insulating rubber seat is insufficient, or there is no elastic recovery ability at all. Therefore, the flexible flat cable tends to be subjected to rigid pressure for a long time. Over time, the conductive layer of the flexible flat cable is bound to be worn out.

[0005] In addition, by Figure 1It can also be clearly seen from the figure that a snap protrusion is provided on the flip member. The number of snap protrusions is set to 2, and they are formed by symmetrically extending outward from the left and right side walls of the flip member. There are snap grooves for the snap protrusions to be placed on the left and right sides of the insulating rubber seat. In actual application, after the flexible flat cable is inserted into place relative to the insulating rubber seat, the flip member is tilted circumferentially, and the snap protrusion gradually approaches the snap groove until it is completely sunk into the snap groove, and in this process, the flexible flat cable is locked due to the pressure from the flip member. In actual application, it is found that this flip-up FPC connector still has the following problems: after a period of use, the snap protrusion and the snap groove are severely worn, the flip member cannot be stably and reliably locked, and the flexible flat cable is loose or accidentally falls off from the FPC connector from time to time, which leads to interruption of signal transmission. The reason is that the insulating rubber seat and the flip part are both made of plastic, and their own structural strength, rigidity and wear resistance are not as good as expected, which leads to the relatively limited structural strength and wear resistance of the buckle protrusions and buckle grooves formed thereon. In addition, under the design requirements of large width dimensions, the flip part after molding is very easy to be arched or twisted. The above two factors lead to the buckle protrusions and buckle grooves failing due to severe wear or the buckle protrusions accidentally falling out of the buckle grooves. This problem is particularly serious when the FPC connector is used in high-frequency excitation occasions. In addition, due to the design defect that the flip part is made of plastic, the flip part does not have the function of shielding the external magnetic field, so the signal is very susceptible to electromagnetic and radio frequency interference during the transmission process, which affects the signal transmission quality.

[0006] In summary, it is urgent for technical personnel in this field to solve the above technical problems. Summary of the invention

[0007] Therefore, in view of the above existing problems and defects, the designers of the present invention collected relevant information, conducted multiple evaluations and considerations, and continued to experiment and modify after many years of R&D experience in this industry, which ultimately led to the emergence of the flip-on FPC connector.

[0008] In order to solve the above technical problems, the present invention relates to a flip-on FPC connector, including an insulating rubber seat, wiring terminals, mechanical terminals, a flip pressure piece, a left-mounted metal locking piece and a right-mounted metal locking piece. After the flip-on FPC connector is assembled, the wiring terminals and the mechanical terminals are independent of each other and insulated from each other. A flexible cable insertion slot, a wiring terminal insertion slot and a mechanical terminal insertion slot are formed on the insulating rubber seat at the same time. A plurality of mechanical terminals cooperate to elastically apply pressure and limit the flip pressure piece. When the flexible cable is inserted into place relative to the flexible cable insertion slot and the flip pressure piece is locked, the flexible cable is elastically pressed by the plurality of wiring terminals and is electrically conductive. The flip pressure piece is composed of a plastic flip pressure plate and a metal shell. The metal shell is made of low-resistance, high-strength material. The left-mounted metal locking piece and the right-mounted metal locking piece cooperate to bear and lock the flip pressure piece. The left metal lock component and the right metal lock component are grounded, the metal shell electrically connected with the left metal lock component and the right metal lock component is indirectly grounded, and at least one of the multiple connection terminals and multiple mechanical terminals are grounded.

[0009] As a further improvement of the technical solution disclosed in the present invention, the terminal block is a metal punching part, which is composed of a first inserting section, a first vertical thrust section, an elastic top-contact conductive section and a first PCB board welding section. The first inserting section and the elastic top-contact conductive section are both formed by extending backward from the rear side wall of the first vertical thrust section, and the first inserting section is located directly below the elastic top-contact conductive section. The first PCB board welding section is formed by extending forward from the front side wall of the first vertical thrust section. When the flexible flat cable is inserted into place relative to the FPC connector and is pressed and locked, the multiple elastic top-contact conductive sections arranged in a linear array adopt an elastic top-contact method to electrically conduct with the flexible flat cable. The terminal insertion groove is composed of an upper terminal insertion sub-groove and a lower terminal insertion sub-groove that are independent of each other. The upper terminal insertion sub-groove is used to place the elastic top-contact conductive section, and it is extended downward from the top wall of the flexible flat cable insertion groove. The lower wiring terminal embedding sub-groove is used for inserting the first embedding section and is formed by extending upward from the bottom wall of the insulating rubber seat.

[0010] As a further improvement of the technical solution disclosed in the present invention, along the front-to-back direction, the elastic top-contact conduction section is sequentially connected by a flat abutting section and an inclined elastic top-contact section. A top-contact protrusion is formed at the free end of the inclined elastic top-contact section. When the wiring terminal is completely embedded relative to the insulating rubber seat, the flat abutting section presses against the bottom wall of the upper wiring terminal embedding sub-slot, while the inclined elastic top-contact section remains free.

[0011] As a further improvement of the technical solution disclosed in the present invention, a first hooking protrusion is formed at the free end of the first insertion section. When the wiring terminal is completely embedded relative to the insulating rubber seat, the first hooking protrusion is blocked, limited, or penetrates into the insulating rubber seat to a set depth.

[0012] As a further improvement of the technical solution disclosed in the present invention, the mechanical terminal is a metal punching part, which is composed of a second vertical thrust section, a second insert section, a third insert section, a fourth insert section and a second PCB board welding section. The second insert section, the third insert section and the fourth insert section are all formed by extending forward from the front side wall of the second vertical thrust section. When the mechanical terminal is inserted into place relative to the insulating rubber seat, the second insert section, the third insert section and the second vertical thrust section are all hidden in the insulating rubber seat, and the fourth insert section extends beyond the insulating rubber seat by a set length. The second PCB board welding section is formed by extending backward from the rear side wall of the second vertical thrust section and is misaligned with the second insert section. The second PCB board welding section is fixed to the PCB board by welding and is grounded. At different stages in the process of tilting and flipping the pressure piece, the reaction force on the protruding part of the fourth insert section changes, and its horizontal inclination angle can be adaptively changed. The mechanical terminal mounting groove is composed of an upper mechanical terminal mounting sub-groove and a lower mechanical terminal mounting sub-groove that are independent of each other. The upper mechanical terminal embedding sub-groove is used to embed the fourth embedding section and the third embedding section at the same time, while the lower mechanical terminal embedding sub-groove is used to embed the second embedding section independently.

[0013] As a further improvement of the technical solution disclosed in the present invention, a second hooking protrusion is formed at the free end of the third inserting section. During the process of inserting the mechanical terminal, the third inserting section is inclined to the fourth inserting section due to the reaction force, and the second hooking protrusion elastically contacts the bottom wall of the upper mechanical terminal inserting sub-slot to perform a sliding motion until the reaction force disappears and the second hooking protrusion is blocked and limited by the insulating rubber seat.

[0014] As a further improvement of the technical solution disclosed in the present invention, a limiting notch is formed at the free end of the fourth insertion section. Along its width direction, a series of chamfered pressure shafts are formed on the plastic flip pressure plate. When the flip-on FPC connector is assembled, the chamfered pressure shaft is elastically pressed and limited by the limiting notch opposite to it. In the process of the flip pressure piece performing a circumferential flipping motion due to the action of an external force, the area where the chamfered pressure shaft is pressed by the limiting notch changes, and the flip pressure piece can realize or release the compression and locking of the flexible flat cable.

[0015] As a further improvement of the technical solution disclosed in the present invention, the plastic flip pressure plate is an integrated injection molded part, which is composed of a pressure plate body, a left-mounted rotating pivot, and a right-mounted rotating pivot. By removing material, the rear side wall of the pressure plate body extends forward to form an avoidance gap for avoiding the mechanical terminal. The number of avoidance gaps is multiple, and they are arranged in a linear array along the width direction of the pressure plate body. By adding material, the chamfered pressure shaft is formed in a horizontal state in the avoidance gap. By adding material, the left-mounted rotating pivot and the right-mounted rotating pivot are respectively extended outward by the left and right side walls of the pressure plate body. In the process of the flip pressure piece being subjected to external force and performing a circumferential flipping motion with the common central axis of the left-mounted rotating pivot and the right-mounted rotating pivot as the rotation reference, the area where the chamfered pressure shaft is pressed by the fourth inserted section changes, and the pressure plate body is able to achieve or release the clamping lock of the soft flat cable.

[0016] As a further improvement of the technical solution disclosed in the present invention, the top wall of the pressure plate body extends downward to form a settling groove for placing the metal shell, and a plurality of limiting columns are formed along the width direction of the settling groove. Along its width direction, a plurality of limiting holes corresponding to the positions of the limiting columns and matched in size are opened on the metal shell. When the metal shell is placed in place relative to the settling groove, the limiting column protrudes from the top wall of the metal shell by 0.1 to 0.6 mm, and the limiting column is subjected to the synergistic effect of heat and pressure, and the protruding section of the limiting column changes its shape to form a large-diameter limiting pier head, while the non-protruding section is radially expanded.

[0017] As a further improvement of the technical solution disclosed in the present invention, after the punching and pressing process, the metal shell is formed with an elastic pressure contact arm, and correspondingly, the pressure plate body is formed with a process notch for the elastic pressure contact arm to freely pass through. When the flexible flat cable is inserted in place relative to the FPC connector, the elastic pressure contact arm touches the shielding layer of the flexible flat cable and is electrically conductive.

[0018] As a further improvement of the technical solution disclosed in the present invention, the metal shell is a sheet metal bending part, which is connected in sequence by a left-placed drooping section, a flat-placed fitting section and a right-placed drooping section. The left-placed drooping section and the right-placed drooping section are both extended from the flat-placed fitting section and bent at 90 degrees. A profiling process is performed, and a left-placed extended locking protrusion and a right-placed extended locking protrusion are correspondingly formed on the left-placed drooping section and the right-placed drooping section. The left-placed drooping section, the flat-placed fitting section, and the right-placed drooping section are respectively in contact with the left side wall, the top wall, and the right side wall of the plastic flip pressure plate, and are combined and fixed. The left-placed metal locking fastener and the right-placed metal locking fastener are also sheet metal bending parts, and both adopt an inserting method to achieve fixation with the insulating rubber seat. The left-placed metal locking fastener is formed with a left-placed locking notch that matches the left-placed extended locking protrusion. The right-placed metal locking fastener is formed with a right-placed locking notch that matches the right-placed extended locking protrusion. At a certain moment in the process of the flipping pressure piece performing circumferential flipping motion due to the action of external force, partial areas of the left-mounted metal locking piece and the right-mounted metal locking piece undergo temporary elastic deformation due to being squeezed, and the left-mounted extended locking protrusion and the right-mounted extended locking protrusion are squeezed into the left-mounted locking notch and the right-mounted locking notch respectively, so that the flipping freedom of the flipping pressure piece is restricted to zero, and the flexible cable is pressed and locked.

[0019] As a further improvement of the technical solution disclosed in the present invention, the design structures of the left-mounted metal lock fastener and the right-mounted metal lock fastener are completely mirrored. Taking the left-mounted metal lock fastener as the description object, it is composed of a left-mounted embedded arm, a left-mounted arc-shaped transition arm, a left-mounted flip-piece lock arm and a left-mounted grounding arm. Among them, the left-mounted metal lock fastener is assembled and fixed with the insulating rubber seat by means of the left-mounted embedded arm. Punching is performed, and a left-mounted supporting notch for supporting the left-mounted rotating pivot is formed on the left-mounted embedded arm, and a left-mounted locking notch is formed on the left-mounted flip-piece lock arm. The left-mounted locking notch is formed by extending backward from the front side wall of the left-mounted flip-piece lock arm. The left-mounted arc-shaped transition arm serves as a connection transition between the left-mounted embedded arm and the left-mounted flip-piece lock arm. The left-mounted grounding arm extends downward from a partial area of ​​the left-mounted embedded arm and is bent outward by 90°. After the flip-on FPC connector is positioned relative to the PCB, the left grounding arm is fixed to the PCB by soldering and is connected to the ground. The insulating rubber seat is formed with a left metal lock fastener insertion slot for inserting the left insertion arm and a left metal lock fastener receiving slot for inserting the left flip lock fastener arm. When the left flip lock fastener arm is subjected to the top contact force from the left extended locking protrusion, the bending radius of the left arc-shaped transition arm changes, and at the same time, the left flip lock fastener arm is adaptively tilted at a small angle in the left metal lock fastener receiving slot.

[0020] In practical applications, the flip-on FPC connector disclosed in the present invention can achieve at least the following beneficial technical effects, specifically:

[0021] 1) The mechanical terminal only retains the function of limiting the flip pressure piece, while the wiring terminal only retains the elastic pressure-contact soft cable to realize the signal transmission function. Both the mechanical terminal and the wiring terminal are punched out of metal strips. In this way, on the one hand, during the entire process of flipping the pressure piece, the flip pressure plate is always subject to the elastic pressure from the mechanical terminal, so that the flip pressure plate can be reliably and stably limited, and the flipping action is extremely flexible and smooth; on the other hand, after the installation is completed, the mechanical terminal has a larger bonding area relative to the insulating rubber seat. In this way, when the mechanical terminal is subjected to the reaction force from the flip pressure piece, the mechanical terminal always maintains a good bonding strength relative to the insulating rubber seat, which can effectively avoid the occurrence of its own loosening, even when the flip pressure piece undergoes multiple flipping operations;

[0022] 2) The mechanical terminals and wiring terminals are independent of each other and insulated from each other. In addition, after the redesign, the design dimensions of the mechanical terminals and wiring terminals have been greatly reduced, and the charge distribution surface has been significantly reduced during the electrical conduction process. In addition, thanks to the grounding of at least one of the multiple wiring terminals, multiple mechanical terminals and the metal shell, a good electromagnetic field shielding effect can be formed around the flexible cable plug-in end area, which can shield the external magnetic field and noise through reflection, absorption and funneling, and the signal transmission process can be protected from the adverse effects of electromagnetic waves and noise, thereby ensuring that the signal can be transmitted stably and with high quality;

[0023] 3) When the flexible flat cable is inserted into place relative to the FPC connector, multiple terminals are electrically connected to the flexible flat cable by elastic pressure contact. Thanks to the design concept that the mechanical terminals and the terminals are independent and insulated from each other, the upper limit of the elastic deformation of the terminals is extremely high, even when the terminals are fully installed, thus paving the way for the conductive layer of the flexible flat cable to avoid severe and excessive wear in long-term use;

[0024] 4) The formed flip pressure piece has excellent structural strength, rigidity and wear resistance, which can prevent the buckle structure formed between the left metal lock piece, the right metal lock piece and the flip pressure piece from being worn during multiple locking / unlocking actions, thereby ensuring that the flip pressure piece always maintains a reliable locking state during the signal transmission process, even in the face of high-frequency excitation application scenarios;

[0025] 5) Since the metal shell is grounded, the charge on the flip pressure piece can be immediately transferred to the ground, thereby effectively eliminating the adverse effects of static electricity accumulation on the signal transmission process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a three-dimensional schematic diagram of a flip-close FPC connector in the prior art.

[0028] Figure 2 It is an application schematic diagram of the flip-on FPC connector disclosed in the present invention.

[0029] Figure 3 It is a three-dimensional schematic diagram of the flip-close FPC connector disclosed in the present invention.

[0030] Figure 4 yes Figure 3 A partial enlarged view of I.

[0031] Figure 5 yes Figure 3 A partial enlarged view of II.

[0032] Figure 6 It is a three-dimensional schematic diagram of the insulating rubber seat in the flip-close FPC connector disclosed in the present invention.

[0033] Figure 7 yes Figure 6 A partial enlarged view of III.

[0034] Figure 8 yes Figure 6 A partial enlarged view of IV.

[0035] Fig. 9 yes Figure 6 Front view of .

[0036] Fig.10 yes Fig. 9 AA section view.

[0037] Fig.11 It is a three-dimensional schematic diagram of the connection terminal in the flip-close FPC connector disclosed in the present invention.

[0038] Fig.12 It is a three-dimensional schematic diagram of the mechanical terminal in the flip-close FPC connector disclosed in the present invention.

[0039] Fig.13 It is a three-dimensional schematic diagram of the flip pressure-applying member in the flip-close FPC connector disclosed in the present invention.

[0040] Fig.14It is an exploded schematic diagram of the flip pressure-applying member in the flip-close FPC connector disclosed in the present invention.

[0041] Fig.15 It is a three-dimensional schematic diagram of a plastic flip pressure plate in the flip-close FPC connector disclosed in the present invention from one viewing angle.

[0042] Fig.16 It is a three-dimensional schematic diagram of another viewing angle of the plastic flip pressure plate in the flip-close FPC connector disclosed in the present invention.

[0043] Fig.17 It is a three-dimensional schematic diagram of a metal shell in the flip-close FPC connector disclosed in the present invention from one viewing angle.

[0044] Fig.18 It is a three-dimensional schematic diagram of another viewing angle of the metal shell in the flip-close FPC connector disclosed in the present invention.

[0045] Fig.19 It is a three-dimensional schematic diagram of a left-placed metal locking component in the flip-close FPC connector disclosed in the present invention from one viewing angle.

[0046] Fig. 20 It is a three-dimensional schematic diagram of another viewing angle of the left-placed metal locking component in the flip-close FPC connector disclosed in the present invention.

[0047] Fig.21 It is a three-dimensional schematic diagram of a right-placed metal locking component in the flip-close FPC connector disclosed in the present invention from one viewing angle.

[0048] Fig. 22 It is a three-dimensional schematic diagram of another viewing angle of the right-placed metal locking component in the flip-close FPC connector disclosed in the present invention.

[0049] Fig.23 yes Figure 3 Front view of .

[0050] Fig.24 yes Fig.23 BB cross-sectional view.

[0051] Fig.25 yes Fig.24 A partial enlarged view of V.

[0052] Fig.26 yes Figure 3 Top view of the .

[0053] Fig. 27 yes Fig.26 CC cross-sectional view.

[0054] Fig.28 yes Fig.26 DD cross-sectional view.

[0055] Fig.29 Also Figure 3 A top view of a graph with hidden lines visible.

[0056] Fig.30 yes Fig.29 EE cross-sectional view.

[0057] Fig.31 yes Fig.30 A partial enlarged view of VI.

[0058] Fig.32 yes Fig.30 A partial enlarged view of VII.

[0059] 1-insulating rubber seat; 11-flexible cable insertion slot; 12-terminal insertion slot; 121-upper terminal insertion slot; 122-lower terminal insertion slot; 13-mechanical terminal insertion slot; 131-upper mechanical terminal insertion slot; 132-lower mechanical terminal insertion slot; 14-left metal lock fastener insertion slot; 15-left metal lock fastener receiving slot; 16-right metal lock fastener insertion slot; 17-right metal lock fastener receiving slot; 2-terminal; 21 - first embedded section; 211- first hooking protrusion; 22- first vertical thrust section; 23- elastic top contact conduction section; 231- flat abutting section; 232- inclined elastic top contact section; 2321- top contact protrusion; 24- first PCB board welding section; 3- mechanical terminal; 31- second vertical thrust section; 32- second embedded section; 33- third embedded section; 331- second hooking protrusion; 34- fourth embedded section; 341- limiting notch; 35- second PCB board welding section; 4-flip pressure piece; 41-plastic flip pressure plate; 411-pressure plate body; 4111-avoidance gap; 4112-edge-cut pressure shaft; 4113-sinking groove; 4114-limiting column; 4115-process gap; 412-left rotation pivot; 413-right rotation pivot; 42-metal shell; 421-left drooping section; 4211-left extension locking protrusion; 422-flat fitting section; 4221-limiting hole; 4222-elastic pressure contact arm; 423-right The drooping section is placed; 4231-right extended locking protrusion; 5-left metal locking piece; 51-left embedded arm; 511-left supporting notch; 52-left arc-shaped transition arm; 53-left flip piece locking arm; 531-left locking notch; 54-left grounding arm; 6-right metal locking piece; 61-right embedded arm; 611-right supporting notch; 62-right arc-shaped transition arm; 63-right flip piece locking arm; 631-right locking notch; 64-right grounding arm. DETAILED DESCRIPTION

[0060] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "left", "right", "front", "back", "up", "down", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0061] The present invention will be further described in detail below in conjunction with specific embodiments. Figure 2 The application schematic diagram of the FPC connector disclosed in the present invention is shown. It can be seen that the FPC connector and the flexible flat cable work together to achieve the purpose of signal transmission, serving many markets and applications, including consumer electronics, industrial control, displays, printers, automobiles, test and measurement instruments, home appliances and medical equipment.

[0062] Figure 3 , Figure 4 , Figure 5 The structure diagram of the flip-close FPC connector disclosed in the present invention is shown together. It can be seen that it is mainly composed of several parts such as an insulating rubber seat 1, a wiring terminal 2, a mechanical terminal 3, a flip pressure member 4, a left-mounted metal lock member 5 and a right-mounted metal lock member 6. Fig.23 , Fig.24 As shown in , when the flip-on FPC connector is assembled, the connection terminals 2 and the mechanical terminals 3 are aligned one by one along the front-to-back direction, are independent of each other, and are insulated from each other. Figure 6 , Figure 7 , Figure 8 As shown in the figure, a flexible flat cable insertion slot 11, a terminal insertion slot 12 and a mechanical terminal insertion slot 13 are formed on the insulating rubber seat 1. Multiple mechanical terminals 3 cooperate to apply elastic pressure and limit the flip pressure member 4. When the flexible flat cable is inserted into the flexible flat cable insertion slot 11 and the flip pressure member 4 is locked, the flexible flat cable is elastically pressed by multiple terminal 2 and electrically connected. Fig.13 , Fig.14 As shown in the figure, the flip pressure member 4 is a plastic + metal composite member, which is composed of a plastic flip pressure plate 41 and a metal shell 42. The metal shell 42 is made of a low-resistance, high-strength material (such as chrome copper, manganese copper, copper-nickel alloy, etc.). Fig.26 , Figure 28-32As shown in the figure, the left metal lock member 5 and the right metal lock member 6 cooperate to bear and lock the flip pressure member 4. The left metal lock member 5 and the right metal lock member 6 are grounded, and the metal shell 42 that is electrically connected to the left metal lock member 5 and the right metal lock member 6 is indirectly grounded, and at least one of the multiple terminals 2 and the multiple mechanical terminals 3 are grounded. When the FPC connector is placed in place relative to the PCB board, the multiple terminals 2 are soldered and fixed to the PCB board, one of which is grounded, and is pressed and electrically connected to the ground wire of the flexible cable.

[0063] Terminal 2 only retains the function of top contact and conducting the flexible cable. Fig.11 As shown in , the terminal block 2 is a metal punching part, which is composed of a first inserting section 21, a first vertical thrust section 22, an elastic top-contact conductive section 23 and a first PCB board soldering section 24. Among them, the first inserting section 21 and the elastic top-contact conductive section 23 are both formed by extending backward from the rear side wall of the first vertical thrust section 22, and the first inserting section 21 is located directly below the elastic top-contact conductive section 23. The first PCB board soldering section 24 is formed by extending forward from the front side wall of the first vertical thrust section 22. After the flip-up FPC connector is placed in place relative to the PCB board, the first PCB board soldering section 24 is fixed to the PCB board by soldering, and at least one of the multiple terminal blocks 2 is grounded, and the remaining parts are connected to the signal transmission circuit. When the flexible flat cable is inserted into place relative to the FPC connector and is pressed and locked, the multiple elastic top-contact conductive sections 23 arranged in a linear array adopt an elastic top-contact method to be electrically conductive with the flexible flat cable. As shown Fig. 9 , Fig.10 , Fig.23 , Fig.24 As shown in the figure, the terminal insertion groove 12 is composed of an upper terminal insertion sub-groove 121 and a lower terminal insertion sub-groove 122 which are independent of each other. The upper terminal insertion sub-groove 121 is used to insert the elastic top contact conductive section 23, and is formed by extending downward from the top wall of the flexible flat cable insertion groove 11. The lower terminal insertion sub-groove 122 is used to insert the first insertion section 21, and is formed by extending upward from the bottom wall of the insulating rubber seat 1.

[0064] As can be seen from the above description, the terminal block 2 does not have the function of the limit flip pressure member 4, but only retains the elastic pressure-touch flexible cable to realize the signal transmission function, and is punched out of a metal strip. In this way, on the one hand, the design structure of the terminal block 2 can be effectively simplified, and the size can be reduced, which means that the charge distribution surface during the electrical conduction process can be greatly reduced, ensuring the stability and reliability of signal transmission. In addition, at least one of the multiple terminals 2 is grounded, and is pressed and electrically connected to the ground wire of the flexible flat cable, thereby to a certain extent weakening the electromagnetic waves and crosstalk interference problems associated with the flexible flat cable during signal transmission; on the other hand, when the flexible flat cable is inserted into place relative to the flip-on FPC connector, the multiple terminals 2 adopt an elastic pressing contact method to electrically connect with the flexible flat cable, and in the process of pressing and positioning the flexible flat cable, the elastic top contact conductive section 23 undergoes adaptive elastic deformation due to the reverse force, thereby paving the way for the conductive layer of the flexible flat cable to avoid severe and excessive wear during long-term use; on the other hand, thanks to the extremely simple design structure and small size of the terminal, it also paves the way for simplifying the manufacturing process and subsequent embedding process.

[0065] Depend on Fig.11 As shown in FIG. 1 , it can be clearly seen that, from front to back, the elastic top-contact conducting section 23 is sequentially connected by a flat abutting section 231 and an inclined elastic top-contact section 232. A top-contact protrusion 2321 is formed at the free end of the inclined elastic top-contact section 232. Fig.24 , Fig.25 As shown in , assuming that the horizontal inclination angle of the tilted elastic top contact segment 232 is α, then 4°≤α≤7°. After the wiring terminal 2 is completely embedded relative to the insulating rubber seat 1, the flat abutting segment 231 presses against the bottom wall of the upper wiring terminal embedding sub-slot 121, while the tilted elastic top contact segment 232 remains free. As the flexible flat cable is locked due to the pressing force from the flip pressure member 4, the multiple top contact protrusions 2321 arranged in a linear array are able to achieve elastic pressure contact with the flexible flat cable, and at the same time, the horizontal inclination angle α changes adaptively.

[0066] According to common knowledge, the elastic deformation capacity of the tilted elastic top contact segment 232 mainly depends on its own extension length and its horizontal inclination angle α. In view of this, when designing a flip-on FPC connector, it is necessary to specifically determine the extension length value of the tilted elastic top contact segment 232 and its initial horizontal inclination angle α according to the type of pre-inserted flexible flat cable and the characteristics of its conductive layer.

[0067] Likewise Fig.11As shown in the figure, a first hooking protrusion 211 is formed at the free end of the first insertion section 21. After the wiring terminal 2 is completely inserted relative to the insulating rubber seat 1, the first hooking protrusion 211 is blocked and limited by the insulating rubber seat 1, so that the wiring terminal 2 can be effectively prevented from accidentally falling out of the insulating rubber seat 1 due to excessive external force during the process of inserting the flexible flat cable or in actual application.

[0068] The signal transmission function is completed by the independent multiple wiring terminals 2, while the mechanical terminal 3 abandons the signal transmission function and only retains the elastic pressure and limit flip pressure member 4 functions. Fig.12 As shown in the figure, the mechanical terminal 3 is also a metal punching part, which is composed of a second vertical thrust section 31, a second inserting section 32, a third inserting section 33, a fourth inserting section 34 and a second PCB board welding section 35. The second inserting section 32, the third inserting section 33 and the fourth inserting section 34 are all formed by extending forward from the front side wall of the second vertical thrust section 31. Fig.23 , Fig.24 As shown in , when the mechanical terminal 3 is inserted into place relative to the insulating rubber seat 1, the second inserting section 32, the third inserting section 33 and the second vertical thrust section 31 are all hidden in the insulating rubber seat 1, and the fourth inserting section 34 extends out of the insulating rubber seat 1 by a set length. The second PCB board welding section 35 is formed by extending backward from the rear side wall of the second vertical thrust section 31, and is offset from the second inserting section 32. The second PCB board welding section 35 is welded and fixed to the PCB board and is grounded. At different stages in the process of tilting and flipping the pressure member 4, the reaction force on the protruding part of the fourth inserting section 34 changes, and its inclination angle with the horizontal is adaptively changed.

[0069] In practical applications, when the flexible flat cable needs to be locked or unlocked, the flip pressure member 4 performs a circumferential flipping motion due to the external force, and in this process, the flip pressure member 4 is always subjected to the coordinated elastic pressure from the plurality of fourth inserting sections 34, so that the flip pressure member 4 can be reliably and stably limited, and the flipping motion is extremely flexible and smooth;

[0070] It should also be noted that, compared with the traditional design, the mechanical terminal 3 is assembled with the insulating rubber seat 1 by an embedded method, that is, before the insulating casting 1 is formally injection molded, multiple mechanical terminals 3 are placed in a linear array in the injection mold cavity, and then, liquid resin is filled into the injection mold cavity, and after solidification, each mechanical terminal 3 is embedded in the insulating rubber seat 1 without gaps. After embedding, the mechanical terminal 3 has a larger bonding area relative to the insulating rubber seat 1, so that when the mechanical terminal 3 is subjected to the reaction force from the flip pressure piece 4, the mechanical terminal 3 always maintains a good bonding strength relative to the insulating rubber seat 1, effectively avoiding the occurrence of accidental loosening of the flexible flat cable, even when the flip pressure piece 4 undergoes multiple flipping operations.

[0071] Furthermore, in order to facilitate the reliable assembly of the mechanical terminal 3 and maintain excellent bonding strength relative to the insulating rubber seat 1 after assembly, as a further optimization of the above technical solution, Fig. 9 , Fig.10 As shown in , the mechanical terminal insertion groove 13 is composed of an upper mechanical terminal insertion sub-groove 131 and a lower mechanical terminal insertion sub-groove 132 which are independent of each other. The upper mechanical terminal insertion sub-groove 131 is used to insert the fourth insertion section 34 and the third insertion section 33 at the same time, while the lower mechanical terminal insertion sub-groove 132 is used to insert the second insertion section 32 independently. Fig.12 As shown in FIG. 1 , a second hooking protrusion 331 is formed at the free end of the third insertion section 33. During the process of inserting the mechanical terminal 3, the third insertion section 33 is inclined to the fourth insertion section 34 due to the reaction force, and the second hooking protrusion 331 elastically contacts the bottom wall of the upper mechanical terminal insertion sub-groove 131 to perform a sliding motion until the reaction force disappears, and the second hooking protrusion 331 is blocked and limited by the insulating rubber seat 1.

[0072] Depend on Fig.12 As shown in FIG. 3 , it can also be clearly seen that a limited notch 341 is formed at the free end of the fourth inserting section 34. Fig.15 , Fig.16 As shown in the figure, a plurality of chamfered pressure shafts 4112 are formed on the plastic flip pressure plate 41, and are arranged in a linear array along its width direction. When the flip-on FPC connector is assembled, the chamfered pressure shaft 4112 is elastically pressed and limited by the limiting notch 341 opposite to it. In the process of the flip pressure member 4 performing a circumferential flipping motion due to the action of an external force, the area where the chamfered pressure shaft 4112 is pressed by the limiting notch 341 changes, and the flip pressure member 4 is able to achieve or release the compression and locking of the flexible flat cable, thereby not only ensuring that the flip pressure member 4 is accurately locked after the flip is completed, but also that the flip pressure member 4 is able to more accurately and stably press the flexible flat cable.

[0073] Furthermore, the same Fig.12 As shown in FIG. 1 , the protruding portion of the fourth inserting section 34 undergoes a chamfering process, and its width is gradually reduced along the extending direction. Fig.23 , Fig.24 Under the premise of ensuring stable and reliable elastic pressure on the flipping pressure piece 4, the elastic modulus of the protruding part of the fourth embedded section 34 is controlled within a reasonable value range. In this way, the reaction force from the flipping pressure piece 4 can be more evenly applied to each fourth embedded section 34, and the deformation stage and deformation amount of each fourth embedded section 34 tend to be consistent, thereby laying a good foundation for ensuring that the flipping pressure piece 4 is always subjected to a stable elastic pressure during the flipping action.

[0074] Thanks to the advantages of both plastic and metal, the flip pressure piece 4 after molding has excellent structural strength, rigidity, wear resistance and light weight. This not only effectively ensures that the flip pressure piece 4 can always maintain a reliable locking state during the signal transmission process, even in the face of high-frequency excitation application scenarios, but also makes the design concept of a large-size flip pressure piece 4 a reality. After molding and long-term use, it can still retain good appearance regularity.

[0075] Furthermore, thanks to the low resistance and grounding design features of the metal shell 42, it can shield external magnetic fields and noise through reflection, absorption, and funneling effects, and can effectively weaken the electromagnetic waves and crosstalk interference problems associated with the flexible cable during the signal transmission process, thereby ensuring that the signal can be transmitted stably and with high quality.

[0076] like Fig.15 , Fig.16 As shown in the figure, the plastic flip pressure plate 41 is an integral injection molded part, which is composed of a pressure plate body 411, a left-mounted rotating pivot 412, and a right-mounted rotating pivot 413. By removing material, the rear side wall of the pressure plate body 411 extends forward to form an avoidance gap 4111 for avoiding the mechanical terminal 3. There are multiple avoidance gaps 4111, and they are arranged in a linear array along the width direction of the pressure plate body 411. By adding material, the chamfered pressure shaft 4112 mentioned above is only formed in a horizontal state in the avoidance gap 4111. By adding material, the left-mounted rotating pivot 412 and the right-mounted rotating pivot 413 are respectively extended outward by the left and right side walls of the pressure plate body 411. As shown in the figure, the left-mounted rotating pivot 412 and the right-mounted rotating pivot 413 are respectively extended outward by the left and right side walls of the pressure plate body 411. Fig.23 , Fig.24 , Fig.26 , Fig.28 As shown in , in the process of the flip pressure member 4 being subjected to external force and performing circumferential flipping motion with the common central axis of the left-mounted rotating pivot 412 and the right-mounted rotating pivot 413 as the rotation reference, the area where the chamfered pressure shaft 4112 is pressed by the mechanical terminal 3 changes, and the pressure plate body 411 is able to achieve or release the compression and locking of the flexible flat cable. In this way, in the entire process of tilting the flip pressure member 4, the multiple chamfered pressure shafts 4112 are always subjected to the coordinated elastic pressure from the fourth interlocking section 34 opposite to them, and the flip pressure member 4 can be reliably and stably limited, and the flipping action is more flexible and smooth.

[0077] Furthermore, if Fig.15 , Fig.16 It can also be clearly seen that the top wall of the pressing plate body 411 extends downward to form a sinking groove 4113 for placing the metal shell 42, and a plurality of limiting columns 4114 are additionally formed along the width direction of the sinking groove 4113. Fig.17 , Fig.18 As shown in , the metal shell 42 is a sheet metal bending part, which is connected in sequence by a left-placed drooping section 421, a flat-placed fitting section 422, and a right-placed drooping section 423. The left-placed drooping section 421 and the right-placed drooping section 423 are both extended from the flat-placed fitting section 422 and bent at 90 degrees. And when the plastic flip pressing plate 41 and the metal shell 42 are combined, the left-placed drooping section 421, the flat-placed fitting section 422, and the right-placed drooping section 423 are respectively in contact with the left side wall, the top wall, and the right side wall of the plastic flip pressing plate 41, and are combined and fixed. Along its width direction, a plurality of limit holes 4221 corresponding to the position of the limit column 4114 and having a size matching are opened on the flat-placed fitting section 422. When the flat fitting section 422 is put in place relative to the sinking tank 4113, the limiting column 4114 extends out of the top wall of the flat fitting section 422 by 0.1 to 0.6 mm. When the plastic flip pressing plate 41 and the metal shell 42 are combined into one, a hot pressing device is required. Due to the synergistic effect of heat and pressure, the extending section of the limiting column 4114 changes its shape to form a large-diameter limiting pier head, while the non-extending section is radially expanded. In this way, on the one hand, it is effectively ensured that the plastic flip pressure plate 41 and the metal shell 42 have good bonding stability and reliability, and the metal shell 42 falls into the sinking groove 4113, which is conducive to the realization of ultra-thin design, and the overall thickness of the flip pressure member 4 after molding is controlled within the design specification range; on the other hand, thanks to the paired application of the limiting column 4114 and the limiting hole 4221, and the hot pressing method is used to shape each limiting column 4114 after assembly, it not only ensures that the combined plastic flip pressure plate 41 and the metal shell 42 maintain extremely high relative position accuracy, but also prevents the occurrence of separation of the two due to excessive external force in the later application process.

[0078] As can be seen from the above description, thanks to the low resistance and grounding design features of the metal shell 42, the electromagnetic waves and crosstalk interference that accompany the flexible cable during signal transmission can be effectively reduced. However, actual experiments have shown that the reduction of electromagnetic waves and crosstalk interference is relatively limited by relying solely on the metal shielding effect, and still cannot meet the customer's high-quality signal transmission standards. In view of this, as a further optimization of the above technical solution, Fig.17 , Fig.18 As shown in , after the punching and pressing process, the flat fitting section 422 is formed with elastic pressure contact arms 4222, and the number of the elastic pressure contact arms 4222 is 2, and they are linearly arranged along the width direction of the metal shell 42. Correspondingly, as Fig.15 , Fig.16 As shown in FIG, the pressing plate body 411 is formed with a process notch 4115 for the elastic pressing contact arm 4222 to freely pass through. Fig.26 , Fig. 27As shown in the figure, when the flexible flat cable is inserted in place relative to the FPC connector, the elastic pressure contact arm 4222 contacts the ground shielding layer of the flexible flat cable and is electrically conductive. In this way, the impedance peak point and return loss of the flexible flat cable in the signal transmission process are significantly reduced, which can not only effectively prevent the interference of external electromagnetic waves and external signals on the normal signal transmission process, but also improve the anti-interference ability of the flexible flat cable and the reliability and stability of data transmission.

[0079] Furthermore, if Fig.17 , Fig.18 As shown in , a profiling process is performed to form a left-placed extended locking protrusion 4211 and a right-placed extended locking protrusion 4231 on the left-placed hanging section 421 and the right-placed hanging section 423 respectively.

[0080] like Figure 4 , Figure 5 As shown in the figure, the left metal lock fastener 5 and the right metal lock fastener 6 are both sheet metal bending parts, and both adopt an inserting method to achieve fixation with the insulating rubber seat 1. Fig.19 , Fig. 20 As shown in the figure, the left-positioned metal lock fastener 5 is composed of a left-positioned embedded arm 51, a left-positioned arc-shaped transition arm 52, a left-positioned flip-piece lock arm 53 and a left-positioned grounding arm 54. The left-positioned metal lock fastener 5 is assembled and fixed with the insulating rubber seat 1 by means of the left-positioned embedded arm 51. Punching is performed, and a left-positioned supporting notch 511 for bearing the left-positioned rotating pivot 412 is formed on the left-positioned embedded arm 51, and a left-positioned locking notch 531 adapted to the left-positioned extended locking protrusion 4211 is formed on the left-positioned flip-piece lock arm 53. The left-positioned locking notch 531 is formed by extending backward from the front side wall of the left-positioned flip-piece lock arm 53. The left-positioned arc-shaped transition arm 52 serves as a connection transition between the left-positioned embedded arm 51 and the left-positioned flip-piece lock arm 53. The left-positioned grounding arm 54 is formed by extending downward from a part of the left-positioned embedded arm 51 and bending outward at 90°. After the flip-on FPC connector is positioned relative to the PCB, the left grounding arm 51 is soldered to fix it to the PCB and to be connected to the ground. Figure 6 , Figure 7 As shown in FIG. 1 , the insulating rubber seat 1 is formed with a left-positioned metal lock fastener inserting slot 14 for inserting the left-positioned inserting arm 51 and a left-positioned metal lock fastener receiving slot 15 for inserting the left-positioned flip member lock fastener arm 53 .

[0081] like Fig.21 , Fig. 22As shown in , compared with the left-mounted metal lock component 5, the right-mounted metal lock component 6 has a completely mirrored design structure, which is composed of several parts such as a right-mounted insert arm 61, a right-mounted arc-shaped transition arm 62, a right-mounted flip-piece lock arm 63 and a right-mounted ground arm 64. After punching, the right-mounted insert arm 61 is formed with a right-mounted supporting notch 611 for supporting the right-mounted rotating pivot 413, and the right-mounted flip-piece lock arm 63 is formed with a right-mounted locking notch 631 that matches the right-mounted extended locking protrusion 4231. The left-mounted metal lock component 5 and the right-mounted metal lock component 6 have the same structural design concept and design purpose. In order to save space, the detailed structure of the right-mounted metal lock component 6 will not be expanded here. As Figure 6 , Figure 8 As shown in FIG. 1 , a right metal lock member inserting slot 16 for inserting the right inserting arm 61 and a right metal lock member receiving slot 17 for inserting the right flip member lock arm 63 are formed on the right side of the insulating rubber seat 1 .

[0082] In the process of locking the flexible flat cable, when the left flip member locking arm 53 and the right flip member locking arm 63 are respectively subjected to the top contact force from the left extended locking protrusion 4211 and the right extended locking protrusion 4231, the bending radius of the left arc-shaped transition arm 52 and the right arc-shaped transition arm 52 changes. At the same time, the inclination angles of the left flip member locking arm 53 and the right arc-shaped transition arm 62 change until the left extended locking protrusion 4211 and the right extended locking protrusion 4231 are respectively subjected to the top contact force, the left flip member locking arm 53 and the right arc-shaped transition arm 62 change. 211, the right-mounted extended locking protrusion 4231 is respectively sunken into the left-mounted locking notch 531 and the right-mounted locking notch 631, so that the elastic potential energy stored in the left-mounted arc-shaped transition arm 52 and the right-mounted arc-shaped transition arm 52 is released, and the left-mounted flip member locking arm 53 and the right-mounted arc-shaped transition arm 62 are restored to the vertical posture. From then on, the left-mounted metal locking member 5 and the right-mounted metal locking member 6 cooperate to complete the locking of the flip pressure member 4 (such as Figure 29-32 As shown in ). In this way, on the one hand, in actual application, the left-positioned extended locking protrusion 4211, the right-positioned extended locking protrusion 4231, the left-positioned locking notch 531, and the right-positioned locking notch 631 are effectively prevented from being worn out due to long-term use, ensuring that the flip pressure member 4 can be stably and reliably locked; on the other hand, the left-positioned extended locking protrusion 4211 is effectively prevented from being loosened or accidentally loosened from the left-positioned locking notch 531 and the right-positioned extended locking protrusion 4231 from being loosened from the right-positioned locking notch 631 due to the exciting force, ensuring that the flexible flat cable always maintains a correct plug-in relationship with the FPC connector in long-term use, which is conducive to stable signal transmission.

[0083] Finally, it is also important to note that Figure 2As shown in , after the flip-up FPC connector is positioned relative to the PCB, the left grounding arm 54 and the right grounding arm 64 are both soldered to achieve fixation with the PCB, so that the left metal lock 5 and the right metal lock 6 are connected to the ground. The left metal lock 5 and the right metal lock 6 are connected to the metal shell 42 by means of the left extension locking protrusion 4211 and the right extension locking protrusion 4231, respectively, so that the metal shell 42 remains in a grounded state. In this way, not only is it ensured that the flexible flat cable is free from electromagnetic and radio frequency interference during the signal transmission process, but it also effectively prevents the occurrence of adverse effects on the stability and quality of signal transmission due to static electricity accumulation on the metal shell 42.

[0084] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flip-on FPC connector, characterized in that: The invention comprises an insulating rubber seat, a wiring terminal, a mechanical terminal, a flip pressure piece, a left-positioned metal locking piece and a right-positioned metal locking piece; after the flip-on FPC connector is assembled, the wiring terminal and the mechanical terminal are independent of each other and insulated from each other; a flexible flat cable insertion slot, a wiring terminal insertion slot and a mechanical terminal insertion slot are formed on the insulating rubber seat at the same time; a plurality of the mechanical terminals cooperate to elastically apply pressure and limit the flip pressure piece; when the flexible flat cable is inserted into the flexible flat cable insertion slot and the flip pressure piece is locked, the flexible flat cable is The plurality of connection terminals cooperate to elastically press and touch, and are electrically conductive; the flip pressure member is formed by combining a plastic flip pressure plate and a metal shell; the metal shell is made of a low-resistance, high-strength material; the left-positioned metal lock member and the right-positioned metal lock member cooperate to bear and lock the flip pressure member; the left-positioned metal lock member and the right-positioned metal lock member are grounded, and the metal shell that is electrically conductive with the left-positioned metal lock member and the right-positioned metal lock member is indirectly grounded, and at least one of the plurality of connection terminals and a plurality of the mechanical terminals are grounded; The terminal block is a metal stamping part, which consists of a first inserting section, a first vertical thrust section, an elastic top contact conductive section and a first PCB board welding section; the first inserting section and the elastic top contact conductive section are both formed by extending backward from the rear side wall of the first vertical thrust section, and the first inserting section is located directly below the elastic top contact conductive section; and the first PCB board welding section is formed by extending forward from the front side wall of the first vertical thrust section; when the flexible flat cable is inserted into place relative to the FPC connector and is pressed and locked , the multiple elastic top-contact conductive sections arranged in a linear array adopt an elastic top-contact method to be electrically conductive with the flexible flat cable; the terminal embedding groove is composed of an upper terminal embedding sub-groove and a lower terminal embedding sub-groove that are independent of each other; the upper terminal embedding sub-groove is used to place the elastic top-contact conductive section, and it is extended downward from the top wall of the flexible flat cable insertion groove; the lower terminal embedding sub-groove is used to insert the first embedding section, and it is extended upward from the bottom wall of the insulating rubber seat.

2. The flip-on FPC connector according to claim 1, characterized in that: Along the front-to-back direction, the elastic top-contact conductive section is sequentially connected by a flat abutting section and an inclined elastic top-contact section; and a top-contact protrusion is formed at the free end of the inclined elastic top-contact section; and when the wiring terminal is completely embedded relative to the insulating rubber seat, the flat abutting section is pressed against the bottom wall of the upper wiring terminal embedding sub-slot, and the inclined elastic top-contact section remains in a free state.

3. The flip-on FPC connector according to claim 2, characterized in that: A first hooking protrusion is formed at the free end of the first insertion section; when the wiring terminal is completely embedded relative to the insulating rubber seat, the first hooking protrusion is blocked and limited by the insulating rubber seat, or penetrates into the insulating rubber seat to a set depth.

4. The flip-on FPC connector according to claim 1, characterized in that: The mechanical terminal is a metal punching part, which is composed of a second vertical thrust section, a second insert section, a third insert section, a fourth insert section and a second PCB board welding section; the second insert section, the third insert section and the fourth insert section are all extended forward from the front side wall of the second vertical thrust section; when the mechanical terminal is inserted into place relative to the insulating rubber seat, the second insert section, the third insert section and the second vertical thrust section are all hidden in the insulating rubber seat, and the fourth insert section extends beyond the insulating rubber seat by a set length; the second PCB board welding section is extended backward from the rear side wall of the second vertical thrust section The fourth inserting section extends from the upper side of the mechanical terminal and is offset from the second inserting section; the second PCB board welding section is welded and fixed to the PCB board and is grounded; at different stages in the process of tilting the flip pressure piece, the reaction force exerted on the protruding part of the fourth inserting section changes, and its inclination angle with the horizontal direction can be adaptively changed; the mechanical terminal embedding groove is composed of an upper mechanical terminal embedding sub-groove and a lower mechanical terminal embedding sub-groove which are independent of each other; wherein the upper mechanical terminal embedding sub-groove is used to simultaneously embed the fourth inserting section and the third inserting section, while the lower mechanical terminal embedding sub-groove is used to independently embed the second inserting section.

5. The flip-on FPC connector according to claim 4, characterized in that: A second hooking protrusion is formed at the free end of the third inserting section; in the process of embedding the mechanical terminal, the third inserting section tends to the fourth inserting section due to the reaction force, and the second hooking protrusion elastically contacts the bottom wall of the upper mechanical terminal embedding sub-slot to perform a sliding movement until the reaction force disappears, and the second hooking protrusion is blocked and limited by the insulating rubber seat.

6. The flip-on FPC connector according to claim 4, characterized in that: A limiting notch is formed at the free end of the fourth inserting section; a series of chamfered pressure shafts are formed on the plastic flip pressure plate along its width direction; when the flip-on FPC connector is assembled, the chamfered pressure shaft is elastically pressurized and limited by the limiting notch opposite to it; in the process of the flip pressure piece performing a circumferential flipping movement due to the action of external force, the area of ​​the chamfered pressure shaft pressed by the fourth inserting section changes, and the flip pressure piece is able to achieve or release the compression and locking of the flexible flat cable.

7. The flip-on FPC connector according to claim 6, characterized in that: The plastic flip pressure plate is an integral injection-molded part, which consists of a pressure plate body, a left-mounted rotating pivot, and a right-mounted rotating pivot; by removing material, the rear side wall of the pressure plate body extends forward to form an avoidance gap for avoiding the mechanical terminal; the number of the avoidance gaps is multiple, and they are arranged in a linear array along the width direction of the pressure plate body; by adding material, the chamfered pressure shaft is formed in the avoidance gap in a horizontal state; by adding material, the left-mounted rotating pivot and the right-mounted rotating pivot are respectively extended outward from the left and right side walls of the pressure plate body; in the process of the flip pressure piece being subjected to external force and performing a circumferential flipping motion with the common central axis of the left-mounted rotating pivot and the right-mounted rotating pivot as a rotation reference, the area where the chamfered pressure shaft is pressed by the mechanical terminal changes, and the pressure plate body is able to achieve or release the clamping lock on the soft flat cable.

8. The flip-close FPC connector according to claim 7, characterized in that: A sinking groove for placing the metal shell is extended downward from the top wall of the pressure plate body, and a plurality of limiting columns are formed along the width direction of the sinking groove; along its width direction, a plurality of limiting holes corresponding to the positions of the limiting columns and matched in size are opened on the metal shell; when the metal shell is placed in place relative to the sinking groove, the limiting columns protrude from the top wall of the metal shell by 0.1 to 0.6 mm, and due to the synergistic effect of heat and pressure, the protruding section of the limiting column changes its shape to form a large-diameter limiting pier head, while the non-protruding section is radially expanded.

9. The flip-close FPC connector according to claim 7, characterized in that: After punching and pressing processes, the metal shell is formed with an elastic pressure contact arm, and correspondingly, the pressure plate body is formed with a process notch for the elastic pressure contact arm to pass freely; when the flexible flat cable is inserted into place relative to the FPC connector, the elastic pressure contact arm touches the shielding layer of the flexible flat cable and is electrically conductive.

10. The flip-on FPC connector according to claim 7, characterized in that: The metal shell is a sheet metal bending part, which is connected in sequence by a left-placed drooping section, a flat-laid fitting section and a right-placed drooping section; the left-placed drooping section and the right-placed drooping section are both extended from the flat-laid fitting section and bent at 90 degrees; a profiling process is performed, and a left-placed extended locking protrusion and a right-placed extended locking protrusion are correspondingly formed on the left-placed drooping section and the right-placed drooping section; the left-placed drooping section, the flat-laid fitting section and the right-placed drooping section are respectively in contact with the left side wall, the top wall and the right side wall of the plastic flip pressure plate, and are combined and fixed; the left-placed metal locking fastener and the right-placed metal locking fastener are also sheet metal bending parts, and both are inserted in an embedded manner to achieve connection with the insulating The rubber seat is fixed; the left-mounted metal locking piece is formed with a left-mounted locking notch which is compatible with the left-mounted extended locking protrusion; the right-mounted metal locking piece is formed with a right-mounted locking notch which is compatible with the right-mounted extended locking protrusion; at a certain moment in the process of the flipping pressure piece performing a circumferential flipping movement due to the action of external force, partial areas of the left-mounted metal locking piece and the right-mounted metal locking piece undergo temporary elastic deformation due to being squeezed, and the left-mounted extended locking protrusion and the right-mounted extended locking protrusion are respectively squeezed into the left-mounted locking notch and the right-mounted locking notch in a one-to-one manner, so that the flipping freedom of the flipping pressure piece is limited to zero, and the flexible flat cable is pressed and locked.

11. The flip-on FPC connector according to claim 10, characterized in that: The design structures of the left-positioned metal lock fastener and the right-positioned metal lock fastener are completely mirror images; the left-positioned metal lock fastener is used as the description object, and is composed of a left-positioned insert arm, a left-positioned arc-shaped transition arm, a left-positioned flip-piece lock arm and a left-positioned grounding arm; wherein, the left-positioned metal lock fastener is assembled and fixed with the insulating rubber seat by means of the left-positioned insert arm; a punching process is performed, and a left-positioned supporting notch for bearing the left-positioned rotating pivot is formed on the left-positioned insert arm, and the left-positioned locking notch is formed on the left-positioned flip-piece lock arm; the left-positioned locking notch is formed by extending backward from the front side wall of the left-positioned flip-piece lock arm; the left-positioned arc-shaped transition arm serves as a connection transition between the left-positioned insert arm and the left-positioned flip-piece lock arm; The left-positioned grounding arm extends downward from a partial area of ​​the left-positioned embedded arm and is bent outward by 90°; when the flip-close FPC connector is positioned relative to the PCB circuit board, the left-positioned grounding arm is fixed to the PCB circuit board by soldering and is connected to the ground; the insulating rubber seat is simultaneously formed with a left-positioned metal lock fastener insertion slot for inserting the left-positioned embedded arm and a left-positioned metal lock fastener accommodating slot for inserting the left-positioned flip-piece lock arm; when the left-positioned flip-piece lock arm is subjected to the top contact force from the left-positioned extended locking protrusion, the bending radius of the left-positioned arc-shaped transition arm changes, and at the same time, the left-positioned flip-piece lock arm adaptively tilts at a small angle in the left-positioned metal lock fastener accommodating slot.

Images