Flexible flat cable locking structure suitable for lifting type FPC connector

Abstract

The utility model relates to the technical field of electric connector manufacturing, in particular to a flexible flat cable locking structure suitable for a lifting type FPC (Flexible Printed Circuit) connector. And the left lock catch piece and the right lock catch piece are fixed with the insulating rubber base and cooperate with each other to bear and lock the overturning pressing piece. And the turnover pressing piece is formed by combining a plastic turnover pressing plate and a metal shell. A left extension locking protrusion and a right extension locking protrusion are formed on the metal shell. A left locking notch and a right locking notch are formed in the left locking fastener and the right locking fastener respectively. Therefore, on one hand, the phenomenon that the flexible flat cable locking structure is abraded due to long-term application is avoided; on the other hand, the phenomenon that due to the action of exciting force, the left extension locking protrusion is accidentally loosened from the left locking notch, and the right extension locking protrusion is accidentally loosened from the right locking notch is avoided; and on the other hand, the design strength and the wear resistance of the flexible flat cable locking structure are ensured, and the lightweight design of the FPC connector can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connector manufacturing, in particular to a flexible cable locking structure suitable for a flip-on FPC connector. Background Art

[0002] Flexible flat cables (FFCs) are components used for signal transmission. Their inherent advantages include flexible design and high signal transmission speed, making them widely used in many electronic products. These cables utilize FPC connectors and electronic connectors to transmit signals from one end to the other, achieving signal transmission. They are commonly used in various digital communications products, portable electronics, computer peripherals, measuring instruments, automotive electronics, and other fields.

[0003] Chinese utility model patent CN212810617U discloses a flip-up FPC connector. The flip-up FPC connector is mainly composed of several parts such as an insulating rubber seat, a flip piece and a terminal. Figure 1 As shown in the figure, the flip member is hinged to the insulating rubber seat and can freely perform a circumferential flipping movement when subjected to external force. The flip member is located directly in front of the rear connecting arm and is placed horizontally between the upper cantilever and the lower cantilever. Along the left and right directions, a series of avoidance grooves are arranged in a linear array on the flip member. And for each avoidance groove, its inner cavity is provided with a non-circular stop arm that is always elastically pressed against the upper cantilever. 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. Snap grooves for the snap protrusions to be placed are provided 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. During this process, the flexible flat cable is locked due to the pressure from the flip member. In actual applications, flip-up FPC connectors with similar structures have been found to have the following problems: 1) After a period of use, the snap-on protrusions and snap-on grooves become severely worn, and the flip-up member cannot be stably and reliably locked; 2) The flexible cable often becomes loose or accidentally falls out of the FPC connector, resulting in signal transmission interruption. The above two points are caused by the fact that the insulating rubber seat and flip-up member are both made of plastic, which has weak structural strength. The snap-on protrusions and snap-on grooves molded thereon have relatively limited structural strength and wear resistance. As a result, the snap-on protrusions and snap-on grooves are often worn or the snap-on protrusions fall out of the snap-on grooves. This problem is particularly serious when the FPC connector is used in high-frequency excitation situations. Therefore, technical personnel are urgently needed to solve the above problems. Utility Model Content

[0004] Therefore, in view of the above-mentioned existing problems and defects, the designers of the present invention collected relevant information, conducted multiple evaluations and considerations, and, after continuous experimentation and modification by technicians with many years of R&D experience in this industry, ultimately led to the development of a flexible cable locking structure suitable for flip-close FPC connectors.

[0005] In order to solve the above-mentioned technical problems, the present invention relates to a flexible cable locking structure suitable for a flip-up FPC connector, comprising an insulating rubber seat, a mechanical terminal, a flip pressure piece, a left-mounted locking piece, and a right-mounted locking piece. A flexible cable insertion slot and a mechanical terminal insertion slot are formed simultaneously on the insulating rubber seat. A plurality of mechanical terminals cooperate to elastically apply pressure and limit the flip pressure piece. The left-mounted locking piece and the right-mounted locking piece cooperate to bear and lock the flip pressure piece. The flip pressure piece is formed by combining a plastic flip pressure plate and a metal shell. The metal shell is a sheet metal bending part, which is sequentially connected by a left-mounted hanging section, a flat-mounted fitting section, and a right-mounted hanging section. The left-mounted hanging section and the right-mounted hanging section are both extended from the flat-mounted fitting section and bent 90 degrees. A profiling process is performed, and a left-mounted extended locking protrusion and a right-mounted extended locking protrusion are correspondingly formed on the left-mounted hanging section and the right-mounted hanging section. The left-mounted drooping section, the flat-mounted fitting section, and the right-mounted drooping section are respectively in contact with the left side wall, top wall, and right side wall of the plastic flip pressure plate, and are fixed together. The left-mounted locking fastener and the right-mounted locking fastener are also sheet metal bending parts, and both are fixed to the insulating rubber seat by inserting. The left-mounted locking fastener is formed with a left-mounted locking notch that matches the left-mounted extended locking protrusion. The right-mounted locking fastener is formed with a right-mounted locking notch that matches the right-mounted extended locking protrusion. At a certain moment in the process of the flip pressure member performing a circumferential flipping motion due to the action of an external force, some areas of the left-mounted locking fastener and the right-mounted locking fastener 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, so that the flipping freedom of the flip pressure member is limited to zero, and the flexible cable is pressed and locked.

[0006] As a further improvement of the technical solution disclosed in the present utility model, the outer shapes of the left-placed extended locking protrusion and the right-placed extended locking protrusion are both semi-spherical, and the protruding height values ​​h1 and h2 are controlled between 0.08 and 0.12 mm.

[0007] As a further improvement to the technical solution disclosed in the present invention, the design structures of the left-mounted locking fastener and the right-mounted locking fastener are completely mirrored. The left-mounted locking fastener is used as the object of design structure description, and includes a left-mounted inserting arm, a left-mounted arc-shaped transition arm, and a left-mounted flip-piece locking arm. The left-mounted locking fastener is assembled and fixed with the insulating rubber seat by means of the left-mounted inserting arm. Punching is performed, and a left-mounted supporting notch for assuming the function of a flip pressure member is formed on the left-mounted inserting arm, and a left-mounted locking notch is formed on the left-mounted flip-piece locking arm. The left-mounted locking notch is formed by extending backward from the front side wall of the left-mounted flip-piece locking arm. The left-mounted arc-shaped transition arm serves as a connection transition between the left-mounted inserting arm and the left-mounted flip-piece locking arm. The insulating rubber seat is also formed with a left-mounted inserting slot for inserting the left-mounted inserting arm and a left-mounted receiving slot for receiving the left-mounted flip-piece locking arm. When the left-positioned flip member 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 inclination angle of the left-positioned flip member lock arm changes.

[0008] As a further improvement of the technical solution disclosed in the present utility model, the wall thickness value of the left-mounted flip member locking arm is a, and the width value of the left-mounted accommodating groove is b, then 0.02mm≤ba≤0.03mm.

[0009] As a further improvement to the technical solution disclosed in this utility model, the left-mounted locking member also includes a left-mounted grounding arm. This left-mounted grounding arm extends downward from a portion of the left-mounted inserting arm and is bent outward 90 degrees. Once the flip-close FPC connector is positioned relative to the PCB, the left-mounted grounding arm is soldered to secure it to the PCB and provide electrical continuity with the ground.

[0010] In practical applications, the flexible cable locking structure disclosed in the present invention for a flip-close FPC connector can achieve at least the following beneficial technical effects, specifically:

[0011] 1) The metal shell formed with the left-mounted extended locking protrusion and the right-mounted extended locking protrusion, as well as the left-mounted locking fastener and the right-mounted locking fastener formed with the left-mounted locking notch and the right-mounted locking notch are all made of metal, which has extremely excellent structural strength and wear resistance. This, on the one hand, can effectively prevent the left-mounted extended locking protrusion, the right-mounted extended locking protrusion, the left-mounted locking notch, and the right-mounted locking notch from wearing out due to long-term use, ensuring that the flip pressure member is stably and reliably locked. On the other hand, it can effectively prevent the left-mounted extended locking protrusion from loosening or accidentally coming loose from the left-mounted locking notch or the right-mounted extended locking protrusion from loosening from the right-mounted locking notch due to the action of exciting force, ensuring that the flexible cable always maintains the correct assembly relationship with the FPC connector during long-term use, facilitating stable signal transmission;

[0012] 2) Abandoning the all-metal structure design, an innovative plastic + metal composite structure is introduced. That is, the metal shell with left-positioned extended locking protrusions and right-positioned extended locking protrusions is in contact with the plastic flip pressure plate, and the combined fixation and the left-positioned locking fastener with left-positioned locking notch and the right-positioned locking fastener with right-positioned locking notch are both inserted to achieve fixation with the insulating rubber seat. In this way, it can not only effectively ensure the design strength and wear resistance of the flexible cable locking structure, but also help to achieve the lightweight design goal of the FPC connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0014] Figure 1 It is a three-dimensional schematic diagram of a flip-close FPC connector in the prior art.

[0015] Figure 2 This is a schematic diagram of the application of the flip-close FPC connector disclosed in the present utility model.

[0016] Figure 3 It is a three-dimensional schematic diagram of the flexible cable locking structure disclosed in the present utility model and applicable to the flip-close FPC connector.

[0017] Figure 4 yes Figure 3 A magnified view of the I part.

[0018] Figure 5 yes Figure 3 Partially enlarged view of II.

[0019] Figure 6 The utility model is a three-dimensional schematic diagram of an insulating rubber seat in a flexible cable locking structure applicable to a flip-and-close FPC connector disclosed in the present invention.

[0020] Figure 7 yes Figure 6 A partial enlarged view of III.

[0021] Figure 8 yes Figure 6 A partial enlarged view of IV.

[0022] Figure 9 The utility model is a three-dimensional schematic diagram of a flip pressure member in a flexible cable locking structure applicable to a flip-close FPC connector.

[0023] Figure 10The utility model is a three-dimensional schematic diagram of a metal shell in a flexible cable locking structure suitable for a flip-and-close FPC connector disclosed in the present invention, viewed from one perspective.

[0024] Figure 11 This is a three-dimensional schematic diagram of another perspective of the metal shell in the flexible cable locking structure applicable to the flip-close FPC connector disclosed in the present invention.

[0025] Figure 12 The utility model is a three-dimensional schematic diagram of a left-positioned locking member in a flexible cable locking structure applicable to a flip-and-close FPC connector disclosed in the present invention, viewed from one perspective.

[0026] Figure 13 This is a three-dimensional schematic diagram of another perspective of the left-positioned locking member in the flexible cable locking structure applicable to the flip-close FPC connector disclosed in the present invention.

[0027] Figure 14 The utility model is a three-dimensional schematic diagram of a right-side locking member in a flexible cable locking structure applicable to a flip-and-close FPC connector disclosed in the present invention, viewed from one perspective.

[0028] Figure 15 It is a three-dimensional schematic diagram of another perspective of the right-positioned locking member in the flexible cable locking structure applicable to the flip-close FPC connector disclosed in the present invention.

[0029] Figure 16 yes Figure 3 Top view of the PCB (with hidden lines visible).

[0030] Figure 17 yes Figure 16 AA cross-sectional view.

[0031] Figure 18 yes Figure 17 A magnified view of the V part.

[0032] Figure 19 yes Figure 17 A partial enlarged view of VI.

[0033] 1-Insulating rubber seat; 11-Flexible cable insertion slot; 12-Mechanical terminal insertion slot; 13-Left insertion slot; 14-Left receiving slot; 15-Right insertion slot; 16-Right receiving slot; 2-Mechanical terminal; 3-Flip pressure piece; 31-Plastic flip pressure plate; 32-Metal shell; 321-Left hanging section; 3211-Left extended locking protrusion; 322-Flat fitting section; 323-Right hanging section; 3231-Right external locking protrusion Extended locking protrusion; 4-left-placed locking piece; 41-left-placed embedded arm; 411-left-placed supporting notch; 42-left-placed arc-shaped transition arm; 43-left-placed flip piece locking arm; 431-left-placed locking notch; 44-left-placed grounding arm; 5-right-placed locking piece; 51-right-placed embedded arm; 511-right-placed supporting notch; 52-right-placed arc-shaped transition arm; 53-right-placed flip piece locking arm; 531-right-placed locking notch; 54-right-placed grounding arm. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "up", "down", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0035] The following is a further detailed description of the present invention in conjunction with specific embodiments. Figure 2 A schematic diagram of the application of the flip-on FPC connector disclosed in the present invention is shown. It can be seen that the flip-on 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.

[0036] Figure 3 、 Figure 4 、 Figure 5 The three-dimensional schematic diagram, partial enlarged diagram I and partial enlarged diagram II of the flexible cable locking structure for the flip-close FPC connector disclosed in the present invention are shown respectively. It can be seen that it mainly consists of several parts, such as an insulating rubber seat 1, a mechanical terminal 2, a flip pressure member 3, a left-mounted locking member 4 and a right-mounted locking member 5. Figure 6As shown in FIG, the insulating rubber base 1 is formed with both a flexible cable insertion slot 11 and a mechanical terminal insertion slot 12. Multiple mechanical terminals 2 are correspondingly inserted into the mechanical terminal insertion slots 12, and they cooperate to elastically apply pressure and limit the position of the flip pressure member 3. The left-hand locking member 4 and the right-hand locking member 5 cooperate to support and lock the flip pressure member. When the flexible cable is inserted into the insulating rubber base 1 and the flip pressure member 3 is flipped into place and locked, the flexible cable is positioned due to the pressure applied by the flip pressure member 3.

[0037] like Figure 9 As shown in FIG, the flip pressure member 3 is formed by combining a plastic flip pressure plate 311 and a metal shell 32. Figure 10 、 11 As shown in the figure, the metal shell 32 is a sheet metal bending part, which is connected in sequence by a left hanging section 321, a flat fitting section 322 and a right hanging section 323. The left hanging section 321 and the right hanging section 323 are both extended from the flat fitting section 322 and bent 90 degrees. After the profiling process is performed, the left hanging section 321 and the right hanging section 323 are respectively formed with a left extension locking protrusion 3211 and a right extension locking protrusion 3231. Figure 9 As shown in the figure, it can be clearly seen that the left hanging section 321, the flat fitting section 322, and the right hanging section 323 are respectively in contact with the left wall, top wall, and right wall of the plastic flip pressure plate 311, and are fixed together. The left locking member 4 and the right locking member 5 are also sheet metal bending parts, and both adopt an inserting method to achieve fixation with the insulating rubber base 1. Figure 12 、 13 As shown in FIG, a left-positioned locking notch 431 is formed on the left-positioned locking member 4 to match the left-positioned extended locking protrusion 3211. Figure 14 、 15 As shown in FIG, a right-positioned locking notch 531 is formed on the right-positioned locking member 5 to match the above-mentioned right-positioned extended locking protrusion 3231.

[0038] In actual application, when the flexible cable is inserted into place relative to the flip-close FPC connector and the locking operation is performed on it, at a certain moment in the process of the flip pressure member 3 performing a circumferential flipping motion due to the action of external force, part of the left-placed locking member 4 and the right-placed locking member 5 undergo temporary elastic deformation due to being squeezed, and the left-placed extended locking protrusion 3211 and the right-placed extended locking protrusion 3231 are respectively squeezed into the left-placed locking notch 431 and the right-placed locking notch 531, so that the flipping freedom of the flip pressure member 3 is limited to zero, and the flexible cable is pressed and locked.

[0039] By adopting the above technical solution, the metal shell 32 formed with the left-positioned extended locking protrusion 3211 and the right-positioned extended locking protrusion 3231 and the left-positioned locking fastener 4 and the right-positioned locking fastener 5 formed with the left-positioned locking notch 431 and the right-positioned locking notch 531 are all made of metal, which has extremely excellent structural strength and wear resistance. In this way, on the one hand, it can effectively prevent the left-positioned extended locking protrusion 3211, the right-positioned extended locking protrusion 3231, the left-positioned locking notch 431, and the right-positioned locking notch 531 from being worn out due to long-term use, ensuring that the flip pressure member 3 can be stably and reliably locked; on the other hand, it can effectively prevent the left-positioned extended locking protrusion 3211 from loosening or accidentally loosening from the left-positioned locking notch 431 and the right-positioned extended locking protrusion 3231 from loosening or accidentally loosening from the right-positioned locking notch 531 due to the action of the exciting force, ensuring that the flexible cable always maintains a correct assembly relationship relative to the FPC connector during long-term use, which is conducive to stable signal transmission.

[0040] It should also be noted here that in order to achieve the design goals of high design strength and high wear resistance, the traditional all-metal structure design has been abandoned. In the technical solution disclosed in this embodiment, a plastic + metal composite structure is innovatively introduced, that is, the metal shell 32 formed with a left-placed extended locking protrusion 3211 and a right-placed extended locking protrusion 3231 is in contact with the plastic flip pressure plate 31, and is combined with the fixed part 4 formed with a left-placed locking notch 431 and the right-placed locking part 5 formed with a right-placed locking notch 531 both adopt an inserting method to achieve fixation with the insulating rubber seat 1. In this way, not only can the design strength and wear resistance of the flexible cable locking structure be effectively guaranteed, but it can also help to achieve the lightweight design goal of the FPC connector.

[0041] like Figure 10 、 11 As shown in Figures 16-19, the left-mounted extended locking protrusion 3211 and the right-mounted extended locking protrusion 3231 are preferably semi-spherical in shape. This, on the one hand, facilitates the high-quality molding of the left-mounted extended locking protrusion 3211 and the right-mounted extended locking protrusion 3231 by die stamping, and helps reduce the molding difficulty; on the other hand, compared with other designs, the semi-spherical left-mounted extended locking protrusion 3211 and the right-mounted extended locking protrusion 3231 are more likely to slide along the side wall of the metal shell 32 with low resistance, and maintain good buckle-limiting stability after sinking into the left-mounted locking notch 431 and the right-mounted locking notch 531.

[0042] After long-term testing, it was verified that the flip pressure member 3 achieved good locking stability as expected, which was not only affected by the design shape factors of the left-side extended locking protrusion 3211 and the right-side extended locking protrusion 3231, but also by their design dimensions. Figure 16-19As shown in , assuming that the protruding height values ​​of the left-placed extended locking protrusion 3211 and the right-placed extended locking protrusion 3231 are h1 and h2 respectively, both should be controlled between 0.08 and 0.12 mm.

[0043] As a further refinement of the above technical solution, Figure 12 、 13 As shown in the figure, the left-positioned locking member 4 is composed of several parts, such as a left-positioned inserting arm 41, a left-positioned arc-shaped transition arm 42, a left-positioned flip-piece locking arm 43, and a left-positioned grounding arm 44. Among them, the left-positioned locking member 4 is assembled and fixed with the insulating rubber base 1 with the help of the left-positioned inserting arm 41. After punching, a left-positioned supporting notch 411 is formed on the left-positioned inserting arm 41 to bear the function of the flip pressure member 3, and a left-positioned locking notch 431 is formed on the left-positioned flip-piece locking arm 43. The left-positioned locking notch 431 is formed by extending backward from the front side wall of the left-positioned flip-piece locking arm 43. The left-positioned arc-shaped transition arm 42 serves as a connection and transition between the left-positioned inserting arm 41 and the left-positioned flip-piece locking arm 43. The left-positioned grounding arm 44 is formed by extending downward from a part of the left-positioned inserting arm 41 and bending outward 90 degrees. When the flip-close FPC connector is positioned relative to the PCB, the left grounding arm 44 is fixed to the PCB and connected to the ground. Figure 7 As shown in FIG, the left side of the insulating rubber base 1 is formed with a left insertion slot 13 for inserting the left insertion arm 41 and a left receiving slot 14 for receiving the left flip member latch arm 43. Assuming the wall thickness of the left flip member latch arm 43 is a and the width of the left receiving slot 14 is b, then 0.02 mm ≤ b ≤ 0.03 mm.

[0044] like Figure 13 、 14 As shown in the figure, compared to the left-mounted locking element 4, the right-mounted locking element 5 has a completely mirrored design structure, which is composed of several parts such as the right-mounted inserting arm 51, the right-mounted arc-shaped transition arm 52, the right-mounted flip-piece locking arm 53, and the right-mounted grounding arm 54. The left-mounted locking element 4 and the right-mounted locking element 5 have the same structural design concept and design purpose. In order to save space, the detailed structure of the right-mounted locking element 5 will not be expanded here. Figure 8 As shown in FIG, the right side of the insulating rubber base 1 is formed with a right-side insertion slot 15 for inserting the right-side insertion arm 51 and a right-side receiving slot 16 for receiving the right-side flip member latch arm 53. Assuming the wall thickness of the right-side flip member latch arm 53 is c and the width of the right-side receiving slot 16 is d, then 0.02 mm ≤ dc ≤ 0.03 mm.

[0045] In actual application, when the flexible cable is locked, when the left flip lock arm 43 and the right flip lock arm 53 are respectively subjected to the top contact force from the left extended locking protrusion 3211 and the right extended locking protrusion 3231, the bending radius of the left arc-shaped transition arm 42 and the right arc-shaped transition arm 52 changes. At the same time, the inclination angles of the left flip lock arm 43 and the right flip lock arm 53 change until the left outer locking protrusion 3211 and the right outer locking protrusion 3231 are respectively applied. The extended locking protrusion 3211 and the right extended locking protrusion 3231 are respectively sunken into the left locking notch 431 and the right locking notch 531. At this point, the elastic potential energy stored in the left arc-shaped transition arm 42 and the right arc-shaped transition arm 52 is released, and the left flip part locking arm 43 and the right flip part locking arm 53 are reset to the vertical posture. From then on, the left locking part 4 and the right locking part 5 cooperate to complete the locking of the flip pressure part 3.

[0046] It's also important to note that once the flip-up FPC connector is positioned relative to the PCB, both the left-mounted grounding arm 44 and the right-mounted grounding arm 54 are soldered to secure them to the PCB and maintain electrical contact with the ground. Since the left-mounted locking member 4 and the right-mounted locking member 5 are electrically connected to the metal shell 32 via the left-mounted extended locking protrusion 3211 and the right-mounted extended locking protrusion 3231, respectively, the metal shell 32 is also grounded. This not only protects the FPC connector's signal transmission process from electromagnetic and radio frequency interference during actual use, but also effectively prevents the accumulation of static electricity on the metal shell 32.

[0047] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily 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 is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible cable locking structure suitable for a flip-on FPC connector, comprising an insulating rubber base, a mechanical terminal, a flip pressure member, a left-mounted locking member, and a right-mounted locking member; the insulating rubber base is formed with a flexible cable insertion slot and a mechanical terminal insertion slot; the plurality of mechanical terminals cooperate to elastically apply pressure and limit the flip pressure member; the left-mounted locking member and the right-mounted locking member cooperate to support and lock the flip pressure member, characterized in that: The flip pressure piece is composed of a plastic flip pressure plate and a metal shell; the metal shell is a sheet metal bending piece, which is connected in sequence by a left-placed hanging section, a flat-laid fitting section and a right-placed hanging section; the left-placed hanging section and the right-placed hanging section are both extended from the flat-laid fitting section and bent 90°; a press forming process is performed, and a left-placed extended locking protrusion and a right-placed extended locking protrusion are correspondingly formed on the left-placed hanging section and the right-placed hanging section; the left-placed hanging section, the flat-laid fitting section and the right-placed hanging section are respectively in contact with the left side wall, top wall and right side wall of the plastic flip pressure plate, and are fixed together; the left-placed locking fastener and the right-placed locking fastener are also sheet metal bending pieces, and both adopt An inserting method is adopted to achieve fixation with the insulating rubber seat; the left-placed locking fastener is formed with a left-placed locking notch that is compatible with the left-placed extended locking protrusion; the right-placed locking fastener is formed with a right-placed locking notch that is compatible with the right-placed extended locking protrusion; at a certain moment in the process of the flip pressure member performing a circumferential flipping motion due to the action of external force, partial areas of the left-placed locking fastener and the right-placed locking fastener undergo temporary elastic deformation due to being squeezed, and the left-placed extended locking protrusion and the right-placed extended locking protrusion are respectively squeezed into the left-placed locking notch and the right-placed locking notch, so that the flipping freedom of the flip pressure member is limited to zero, and the flexible cable is pressed and locked.

2. The flexible cable locking structure for a flip-up FPC connector according to claim 1, wherein: The outer shapes of the left-positioned extended locking protrusion and the right-positioned extended locking protrusion are both semi-spherical, and the protruding height values ​​h1 and h2 are controlled between 0.08 and 0.12 mm.

3. The flexible cable locking structure for a flip-close FPC connector according to any one of claims 1 to 2, wherein: The design structures of the left-positioned locking fastener and the right-positioned locking fastener are completely mirror images; The left-positioned locking part is used as the design structure description object, which includes a left-positioned embedded arm, a left-positioned arc-shaped transition arm and a left-positioned flip-piece locking arm; wherein, the left-positioned locking part is assembled and fixed with the insulating rubber seat by means of the left-positioned embedded arm; a punching process is performed, and a left-positioned supporting notch for assuming the function of the flip pressure member is formed on the left-positioned embedded arm, and the left-positioned locking notch is formed on the left-positioned flip-piece locking arm; the left-positioned locking notch is formed from the front side wall of the left-positioned flip-piece locking arm to the left-positioned flip-piece locking arm The left-positioned arc-shaped transition arm serves as a connection transition between the left-positioned insertion arm and the left-positioned flip-piece locking arm; the insulating rubber seat is simultaneously formed with a left-positioned insertion slot for inserting the left-positioned insertion arm and the left-positioned accommodating slot for inserting the left-positioned flip-piece locking arm; when the left-positioned flip-piece locking 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 inclination angle of the left-positioned flip-piece locking arm changes.

4. The flexible cable locking structure for a flip-close FPC connector according to claim 3, wherein: The wall thickness value of the left-placed flip member locking arm is a, and the width value of the left-placed accommodating groove is b, then 0.02mm≤ba≤0.03mm.

5. The flexible cable locking structure for a flip-close FPC connector according to claim 3, wherein: The left-positioned locking member also includes a left-positioned grounding arm; the left-positioned grounding arm extends downward from a portion of the left-positioned inserting arm and is bent outward 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 conductive with the ground.

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