Lifting-closing type FPC (Flexible Printed Circuit) connector

Abstract

The utility model relates to the technical field of FPC (Flexible Printed Circuit) connector manufacturing, in particular to a lifting-closing type FPC connector. The wiring terminal is formed by sequentially connecting an upper cantilever, a rear connection arm and a lower cantilever. And a conducting hook extends upwards from the free end of the lower cantilever. And the left limiting piece and the right limiting piece are inserted into the insulating rubber base. The overturning piece is composed of an overturning body, a left rotating shaft and a right rotating shaft. The overturning piece and the insulating rubber base are assembled into a whole under the synergistic effect of the lower cantilever, the left limiting piece and the right limiting piece, and the overturning piece only keeps the overturning freedom degree. When the overturning piece is overturned to the horizontal state, the flat cable is subjected to the pressing force effect from the overturning piece and the hooking force effect from the conduction hook at the same time, and the position of the flat cable is locked. And when the locking of the flat cable needs to be relieved, the overturning piece is overturned reversely until the pressing of the flat cable is relieved and the hooking of the flat cable is relieved by conducting the hook.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC connector manufacturing, in particular to a flip-type FPC connector. Background Art

[0002] A flexible flat cable (FFC) is a component for signal transmission, which has the advantages of arbitrary bending and high signal transmission, so it is widely used in many electronic products. The flexible flat cable is used in combination with an FPC connector and an electronic 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] At present, most of the FPC connectors on the market adopt a flip-type structure. However, in actual applications, there are various problems. For example, the Chinese utility model patent CN206388891U discloses a flip-lid buckle structure of an electrical connector, which has problems such as a complex implementation structure, a relatively high manufacturing cost of the buckle, and an increase in the time required for the assembly process. The Chinese utility model patent CN212810617U discloses a flip-type FPC connector. Although the buckle is cancelled, when pre-locking the flexible flat cable, the flipping member needs to be flipped to a flat state and ensure that the buckle protrusion enters the buckle groove. However, in the actual working process, due to the action of the excitation force, the buckle protrusion is easily disengaged from the buckle groove, resulting in the accidental unlocking of the flexible flat cable. Moreover, there is no effective stop for the two side rotating shafts of the flipping member, and it is difficult to keep the left and right movement processes of the flipping member synchronized during the flipping process, which will inevitably cause its posture to be distorted, not only affecting the locking stability of the flexible flat cable, but also the phenomenon that one side rotating shaft of the flipping member is forcibly disengaged from the corresponding buckle groove when subjected to unreasonable external forces occurs frequently. Therefore, it is urgent for technical personnel to solve the above problems. Summary of the Utility Model

[0004] Therefore, in view of the above existing problems and defects, the designers of the present utility model collected relevant materials, conducted multi-party evaluations and considerations, and through continuous experiments and modifications by technical personnel with many years of R & D experience in this industry, finally led to the emergence of this flip-type FPC connector.

[0005] In order to solve the above technical problems, the present utility model relates to a flip-type FPC connector, which includes an insulating rubber seat, a wiring terminal assembly, a flipping member, a left limiting member, and a right limiting member. The wiring terminal assembly is composed of a plurality of wiring terminals arranged in a linear array. Along the length direction of the insulating rubber seat, a series of wiring terminal slots are provided to respectively insert the wiring terminals. The wiring terminal is sequentially connected by an upper cantilever, a rear connecting arm, and a lower cantilever. A conducting hook is extended upward from the free end of the lower cantilever to achieve position locking and contact conduction of the flexible cable. The left limiting member and the right limiting member are inserted on the insulating rubber seat and are symmetrically arranged along the left-right direction. A left limiting member slot and a right limiting member slot are simultaneously formed on the insulating rubber seat. The flipping member is assembled with the insulating rubber seat as a whole under the cooperative action of the upper cantilever, the left limiting member, and the right limiting member, and the flipping member only retains the flipping degree of freedom. When the flexible cable is pushed against the insulating rubber seat in place, the flipping member is flipped to a flat state, and the flexible cable is position-locked by the pressing force from the flipping member and the hooking force from the conducting hook at the same time. When it is necessary to release the locking of the flexible cable, the flipping member is flipped in the reverse direction until the flipping member releases the pressing on the flexible cable and the conducting hook releases the hooking of the flexible cable. During this process, the upper cantilever tilts upward and yields due to the pushing force from the flipping member.

[0006] As a further improvement of the technical solution disclosed by the present utility model, the flipping member is composed of a flipping body, a left rotating shaft, and a right rotating shaft. The left rotating shaft and the right rotating shaft are continuously extended outward from the left and right side walls of the flipping body. Along its length direction, a plurality of upper avoidance notches arranged in a linear array are formed on the flipping body to avoid interference between the flipping member and the upper cantilever during the flipping process. At a set distance from its front end face, the upper cantilever is provided with an upper semi-elliptical limiting notch. A deflecting load-bearing member is formed by locally extending the left side wall of the upper avoidance notch to the right until the right side wall. The left limiting member and the right limiting member are respectively formed with a left semi-circular limiting notch and a right semi-circular limiting notch that are adapted to the outer diameter dimensions of the left rotating shaft and the right rotating shaft. When the flipping member is assembled with the insulating rubber seat, the left rotating shaft and the right rotating shaft are respectively semi-encircled by the left semi-circular limiting notch and the right semi-circular limiting notch. At the same time, a plurality of deflecting load-bearing members are sunk into the corresponding upper semi-elliptical limiting notches, and a plurality of deflecting load-bearing members are always subjected to the elastic pressing force from the upper cantilever.

[0007] As a further improvement of the technical solution disclosed by the present utility model, the central axes of the left rotating shaft, the right rotating shaft, and the plurality of deflecting load-bearing members coincide. The outer shapes of the left rotating shaft and the right rotating shaft are the same, and the cross section is circular. The cross section of the deflecting load-bearing member is a bevelled one-round shape.

[0008] As a further improvement of the technical solution disclosed in the utility model, a left-mounted push-top sliding slope is formed on the left-mounted limit piece. There is a smooth transition between the left-mounted push-top sliding slope and the left-mounted semicircular limit notch. A right-mounted push-top sliding slope is formed on the right-mounted limit piece. There is a smooth transition between the right-mounted push-top sliding slope and the right-mounted semicircular limit notch. In the process of the left-mounted limit piece and the right-mounted limit piece going deep into the insulating rubber seat, the left-mounted rotating shaft and the right-mounted rotating shaft slide along the left-mounted push-top sliding slope and the right-mounted push-top sliding slope respectively, and the position height is raised until entering the left-mounted semicircular limit notch and the right-mounted semicircular limit notch.

[0009] As a further improvement of the technical solution disclosed in the utility model, a left-positioned limit barb and a right-positioned limit barb are formed on the left-positioned limit member and the right-positioned limit member at a set distance from the rear end surface thereof. In the process of the left-positioned limit member and the right-positioned limit member penetrating into the insulating rubber seat, the top wall of the left-positioned limit member slot and the right-positioned limit member slot elastically retreats due to the squeezing force from the left-positioned limit barb and the right-positioned limit barb respectively. When the left-positioned limit member and the right-positioned limit member are reversely dragged by an external force, the depth of the left-positioned limit barb and the right-positioned limit barb penetrating into the insulating rubber seat increases accordingly, and the kinematic freedom of the left-positioned limit member and the right-positioned limit member is limited to zero.

[0010] As a further improvement of the technical solution disclosed in the utility model, a left-positioned horizontal limiting arm and a right-positioned horizontal limiting arm are respectively formed on the left-positioned limiting member and the right-positioned limiting member.

[0011] In practical applications, the flip-on FPC connector disclosed in the present utility model can achieve the following beneficial technical effects, specifically:

[0012] 1) The traditional assembly method of hingedly connecting the flip part and the insulating rubber seat is abandoned, and the upper cantilever, the left limiter and the right limiter are used to assist in the assembly with the insulating rubber seat. In the actual operation, the cable can be locked / released by simply flipping the flip part, which greatly improves the installation and removal speed of the cable;

[0013] 2) When the flip piece is flipped to the flat state, the cable is effectively locked, and the flip piece can achieve self-locking of its posture with the help of the reverse force of the upper cantilever and its own weight. In this way, on the one hand, it can effectively prevent the subsequent PFC connector from being dislodged due to the exciting force; on the other hand, the design structure of the flip-close FPC connector is simplified to a certain extent, which is conducive to reducing the difficulty of subsequent manufacturing and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a three-dimensional schematic diagram of the flip-up FPC connector in the present invention (in the state where the wire harness is locked).

[0016] Figure 2 It is an exploded schematic diagram of the flip-up FPC connector in the present invention.

[0017] Figure 3 Is Figure 1 The top view of.

[0018] Figure 4 Is Figure 3 The A-A cross-sectional view of.

[0019] Figure 5 Is Figure 4 The B-B cross-sectional view of.

[0020] Figure 6 Is Figure 4 The C-C cross-sectional view of.

[0021] Figure 7 Is Figure 4 The D-D cross-sectional view of.

[0022] Figure 8 It is a three-dimensional schematic diagram of the first perspective of the insulating rubber seat in the flip-up FPC connector of the present invention.

[0023] Figure 9 It is a three-dimensional schematic diagram of the second perspective of the insulating rubber seat in the flip-up FPC connector of the present invention.

[0024] Figure 10 It is a three-dimensional schematic diagram of the third perspective of the insulating rubber seat in the flip-up FPC connector of the present invention.

[0025] Figure 11 It is a three-dimensional schematic diagram of the terminal in the flip-up FPC connector of the present invention.

[0026] Figure 12 It is a three-dimensional schematic diagram of one perspective of the flipping member in the flip-up FPC connector of the present invention.

[0027] Figure 13 It is a three-dimensional schematic diagram of another perspective of the flipping member in the flip-up FPC connector of the present invention.

[0028] Figure 14 It is a three-dimensional schematic diagram of the left-position limiting member in the flip-up FPC connector of the present utility model.

[0029] Figure 15 It is a three-dimensional schematic diagram of the right-position limiting member in the flip-up FPC connector of the present utility model.

[0030] Figure 16 It is also a three-dimensional schematic diagram of the flip-up FPC connector in the present utility model (when the wiring harness is in the unlocked state).

[0031] 1 - Insulating rubber seat; 11 - Wiring terminal slot; 12 - Left-position limiting member slot; 13 - Right-position limiting member slot; 2 - Wiring terminal assembly; 21 - Wiring terminal; 211 - Upper cantilever; 2111 - Upper semi-elliptical limiting notch; 212 - Rear connecting arm; 213 - Lower cantilever; 2131 - Conductive hook; 3 - Flipping member; 31 - Flipping body; 311 - Upper avoidance notch; 312 - Deflection load-bearing member; 313 - Left avoidance notch; 314 - Right avoidance notch; 32 - Left rotating shaft; 33 - Right rotating shaft; 4 - Left-position limiting member; 41 - Left semi-circular limiting notch; 42 - Left pushing and sliding inclined plane; 43 - Left limiting barb; 44 - Left horizontal limiting arm; 5 - Right-position limiting member; 51 - Right semi-circular limiting notch; 52 - Right pushing and sliding inclined plane; 53 - Right limiting barb; 54 - Right horizontal limiting arm. Detailed implementation manners

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0033] It is known that the FPC connector is fixed to the PCB board and is used to insert a wiring harness (such as an FFC wiring harness) to achieve signal transmission.

[0034] The following combines specific embodiments to further elaborate on the content of the present utility model. Figure 1 、 Figure 2 Respectively shown are the three-dimensional schematic diagram and the exploded schematic diagram of the flip-up FPC connector in the present utility model. It can be seen that it mainly consists of several parts such as an insulating rubber seat 1, a wiring terminal assembly 2, a flipping member 3, a left-position limiting member 4, and a right-position limiting member 5. Among them, the wiring terminal assembly 2 is composed of a plurality of wiring terminals 21 arranged in a linear array. As Figure 8 、 9As shown in 10, a series of terminal slots 11 are provided along the length direction of the insulating rubber base 1 to respectively insert the terminal 21. Figure 11 As shown in the figure, the terminal block 21 is formed by connecting an upper cantilever 211, a rear connecting arm 212 and a lower cantilever 213 in sequence. A conductive hook 2131 extends upward from the free end of the lower cantilever 213 to achieve position locking and contact conduction of the cable. The left-positioned stopper 4 and the right-positioned stopper 5 are inserted into the insulating rubber seat 1 and are symmetrically arranged along the left and right directions. Figure 8 , 9 As shown in 10, a left-positioned limiter slot 12 and a right-positioned limiter slot 13 are formed on the insulating rubber seat 1. Figure 12 , 13 As shown in FIG. 1 , the flip member 3 is composed of a flip body 31, a left-positioned rotating shaft 32, and a right-positioned rotating shaft 33. The left-positioned rotating shaft 32 and the right-positioned rotating shaft 33 are formed by the left and right side walls of the flip body 31 extending outwards. Figures 3 - 7 As shown in the figure, the flip member 3 is assembled into one with the insulating rubber seat 1 under the coordinated action of the upper cantilever 211, the left-positioned limiter 4 and the right-positioned limiter 5, and the flip member 3 only retains the degree of freedom of flipping. When the cable is pushed into place relative to the insulating rubber seat 1, the flip member 3 is flipped to a flat state, and the cable is locked in position by the pressing force from the flip member 3 and the hooking force from the conductive hook 2131. When the cable needs to be unlocked, the flip member 3 is flipped in the opposite direction until the flip member 3 releases the pressing force on the cable and the conductive hook 2131 releases the hook on the cable. In this process, the upper cantilever 211 is tilted upward and retreats due to the pushing force from the flip member 3.

[0035] In this embodiment, the flip-on FPC connector abandons the traditional assembly method of directly hingedly connecting the flip member 3 and the insulating rubber seat 1, and instead realizes the assembly with the insulating rubber seat 1 with the assistance of the upper cantilever 211, the left stopper 4 and the right stopper 5. In the actual operation, the locking of the cable can be realized / released by only flipping the flip member 3, which greatly improves the installation and removal speed of the cable.

[0036] Here, it is also necessary to explain that when the flip member 3 is flipped to the horizontal state, the cable is effectively locked, and the flip member 3 can achieve self-locking of its posture with the help of the reverse force of the upper cantilever 211 and its own weight. In this way, on the one hand, it can effectively prevent the subsequent PFC connector from being dislodged due to the excitation force; on the other hand, the design structure of the flip-close FPC connector is simplified to a certain extent, which is conducive to reducing the difficulty of subsequent manufacturing and assembly.

[0037] like Figure 12 , 13As shown in FIG. 1 , along its length direction, the flip body 31 is formed with a plurality of upper avoidance notches 311 arranged in a linear array to prevent the flip member 3 from interfering with the upper cantilever 211 during the flipping process. Figure 11 As shown in , the upper cantilever 211 is provided with an upper half-waist-shaped limiting notch 2111 at a set distance from its front end surface. The left side wall of the upper avoiding notch 311 is partially extended to the right and reaches the right side wall, and the deflection bearing member 312 is formed. Figure 14 , 15 As shown in the figure, the left-positioned limiting member 4 and the right-positioned limiting member 5 are respectively formed with a left-positioned semicircular limiting notch 41 and a right-positioned semicircular limiting notch 51 which are adapted to the outer diameter of the left-positioned rotating shaft 32 and the right-positioned rotating shaft 33. When the flip member 3 is assembled relative to the insulating rubber seat 1, the left-positioned rotating shaft 32 and the right-positioned rotating shaft 33 are respectively semi-encircled by the left-positioned semicircular limiting notch 41 and the right-positioned semicircular limiting notch 51. At the same time, the multiple deflection bearing members 312 are sunken in the upper semi-waist-shaped limiting notch 2111 opposite thereto, and the multiple deflection bearing members 312 are always subjected to the elastic pressing force from the upper cantilever 211 (such as Figures 3 - 7 As shown in ). Under the premise of ensuring that the flip-on FPC connector has a very simple design structure and is conducive to reducing the difficulty of manufacturing and assembly, by adopting the above technical solution, the flip member 3 can be reliably and stably assembled with the insulating rubber seat 1, and the cable can be locked / unlocked by flipping the flip member 3 forwards and backwards.

[0038] Depend on Figure 12 , 13 It can also be clearly seen that the central axes of the left-mounted rotating shaft 32, the right-mounted rotating shaft 33 and the multiple deflection bearing members 312 coincide with each other. The outer shapes of the left-mounted rotating shaft 32 and the right-mounted rotating shaft 33 are consistent, and the cross-section is circular. The cross-section of the deflection bearing member 312 is a chamfered circle. In the process of turning the flip member 3 to perform the deflection movement, the left-mounted rotating shaft 32 and the right-mounted rotating shaft 33 respectively perform circumferential rotation movement in the left semicircular limiting notch 41 and the right semicircular limiting notch 51 in a one-to-one correspondence, and the freedom of translational movement of both along the front-to-back direction is restricted. At the same time, the multiple deflection bearing members 312 perform circumferential rotation movement in the corresponding upper semi-waist-shaped limiting notch 2111. In view of the special matching relationship between the deflection load-bearing member 312 and the upper semi-waist-shaped limiting notch 2111, on the one hand, when the flip member 3 is flipped to a flat state, the flip member 3 achieves self-locking of its posture with the help of the reverse force of the upper cantilever 211 and its own weight; on the other hand, when the flip member 3 is pushed in the reverse direction, the upper cantilever 211 swings upward due to the joint pushing force from multiple deflection load-bearing members 312, and at the same time, the flip member 3 releases the pressure on the cable.

[0039] As shown Figure 14 and 15 shown, a left push-sliding inclined surface 42 is formed on the left limiting member 4. A smooth transition is provided between the left push-sliding inclined surface 42 and the left semi-circular limiting notch 41. A right push-sliding inclined surface 52 is formed on the right limiting member 5. A smooth transition is provided between the right push-sliding inclined surface 52 and the right semi-circular limiting notch 51. During the process of the left limiting member 4 and the right limiting member 5 penetrating into the insulating rubber seat 1, the left rotating shaft 32 and the right rotating shaft 33 respectively slide along the left push-sliding inclined surface 42 and the right push-sliding inclined surface 52 in a one-to-one correspondence, and their position heights are lifted until they enter the left semi-circular limiting notch 41 and the right semi-circular limiting notch 42. At the same time, the deflection load-bearing member 312 sinks into the corresponding upper half-waist-shaped limiting notch 2111, and the deflection load-bearing member 312 is elastically pressed by the corresponding upper cantilever 211. At this moment, the flipping member 3 completes the assembly with the insulating rubber seat 1.

[0040] It is known that during the small-batch trial production stage, it is found that the left limiting member 4 and the right limiting member 5 sometimes move positionally along the left limiting member slot 12 and the right limiting member slot 13. In serious cases, they even come out of the insulating rubber seat 1, which will inevitably lead to incorrect assembly relationship or assembly failure of the flipping member 3. In view of this, as a further optimization of the above technical solution, as shown Figure 14 and 15 shown, at a set distance from their rear end surfaces, left limiting hooks 43 and right limiting hooks 53 are respectively formed on the left limiting member 4 and the right limiting member 5 in a one-to-one correspondence. As shown Figure 6 and 7 shown, during the process of the left limiting member 4 and the right limiting member 5 penetrating into the insulating rubber seat 1, the top walls of the left limiting member slot 12 and the right limiting member slot 13 elastically retreat due to the extrusion forces from the left limiting hook 43 and the right limiting hook 53 respectively. When the left limiting member 4 and the right limiting member 5 are pulled backward by an external force, the penetration depths of the left limiting hook 43 and the right limiting hook 53 into the insulating rubber seat 1 increase, and the kinematic degrees of freedom of the left limiting member 4 and the right limiting member 5 are restricted to zero.

[0041] Similarly, as shown Figure 14 and 15It can also be clearly seen that left horizontal limiting arms 44 and right horizontal limiting arms 54 are respectively formed on the left limiting member 4 and the right limiting member 5. By adopting the above technical solution, on the one hand, in the process of releasing the pressing on the flexible cable due to the flipping of the flipping member 3, the upward displacement movement freedom degree of the flexible cable is jointly restricted by the left horizontal limiting arm 44 and the right horizontal limiting arm 54, ensuring that the flexible cable can be smoothly taken out of the flip-type FPC connector and avoiding the occurrence of damage to the internal circuit due to local excessive bending; on the other hand, in the initial stage of inserting the flexible cable, the left horizontal limiting arm 44 and the right horizontal limiting arm 54 can cooperate to guide its direction, which is more conducive to the operator applying the insertion force to the flexible cable (such as Figure 16 as shown in

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can 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 these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flip - type FPC connector, characterized in that, It includes an insulating rubber base, a terminal assembly, a flipping member, a left-position limiting member, and a right-position limiting member; the terminal assembly is composed of a plurality of terminals arranged in a linear array; a series of terminal slots are provided along the length direction of the insulating rubber base for respectively inserting the terminals; the terminal is sequentially connected by an upper cantilever, a rear connecting arm, and a lower cantilever; a conducting hook extends upward from the free end of the lower cantilever to achieve position locking and contact conduction of the flat cable; the left-position limiting member and the right-position limiting member are inserted on the insulating rubber base and are symmetrically arranged along the left-right direction; a left-position limiting member slot and a right-position limiting member slot are simultaneously formed on the insulating rubber base; the flipping member is assembled with the insulating rubber base as a whole under the cooperative action of the upper cantilever, the left-position limiting member, and the right-position limiting member, and the flipping member only retains the flipping degree of freedom; when the flat cable is pushed against the insulating rubber base in place, the flipping member is flipped to a flat state, and the flat cable is position-locked by the pressing force from the flipping member and the hooking force from the conducting hook; when it is necessary to release the locking of the flat cable, the flipping member is flipped in the reverse direction until the flipping member releases the pressing on the flat cable and the conducting hook releases the hooking of the flat cable. During this process, the upper cantilever tilts upward and yields due to the pushing force from the flipping member.

2. The snap-fit FPC connector according to claim 1, wherein, The flipping member is composed of a flipping body, a left-position rotating shaft, and a right-position rotating shaft; the left-position rotating shaft and the right-position rotating shaft extend outward from the left and right side walls of the flipping body. Along its length direction, a plurality of upper avoidance notches arranged in a linear array are formed on the flipping body to avoid interference between the flipping member and the upper cantilever during the flipping process; at a set distance from its front end face, the upper cantilever is provided with an upper semi-waist-shaped limiting notch; a deflection bearing member is formed by partially extending the left side wall of the upper avoidance notch to the right until the right side wall; the left-position limiting member and the right-position limiting member are respectively formed with a left semi-circular limiting notch and a right semi-circular limiting notch that are adapted to the outer diameter dimensions of the left-position rotating shaft and the right-position rotating shaft; when the flipping member is assembled with the insulating rubber base, the left-position rotating shaft and the right-position rotating shaft are respectively semi-surrounded by the left semi-circular limiting notch and the right semi-circular limiting notch. At the same time, a plurality of deflection bearing members are sunk into the corresponding upper semi-waist-shaped limiting notches, and a plurality of deflection bearing members are always subjected to the elastic pressing force from the upper cantilever.

3. The flip-type FPC connector according to claim 2, wherein The central axes of the left-position rotating shaft, the right-position rotating shaft, and a plurality of deflection bearing members coincide; the outer shapes of the left-position rotating shaft and the right-position rotating shaft are the same, and the cross-section is circular; the cross-section of the deflection bearing member is a bevelled one-round shape.

4. The flip - type FPC connector according to any one of claims 2 - 3, characterized in that, The left limiting member is formed with a left pushing and sliding inclined surface; a smooth transition is provided between the left pushing and sliding inclined surface and the left semi-circular limiting notch; the right limiting member is formed with a right pushing and sliding inclined surface; a smooth transition is provided between the right pushing and sliding inclined surface and the right semi-circular limiting notch; during the process of the left limiting member and the right limiting member penetrating into the insulating rubber seat, the left rotating shaft and the right rotating shaft respectively slide along the left pushing and sliding inclined surface and the right pushing and sliding inclined surface in a one-to-one correspondence, and the position height is lifted until they enter the left semi-circular limiting notch and the right semi-circular limiting notch.

5. The flip-type FPC connector according to any one of claims 2-3, characterized in that, At a set distance from their rear end faces, the left limiting member and the right limiting member are respectively formed with left limiting barbs and right limiting barbs in a one-to-one correspondence; during the process of the left limiting member and the right limiting member penetrating into the insulating rubber seat, the top walls of the left limiting member slot and the right limiting member slot elastically retreat due to the extrusion forces from the left limiting barbs and the right limiting barbs respectively; when the left limiting member and the right limiting member are subjected to an external force for reverse dragging, the penetration depths of the left limiting barbs and the right limiting barbs into the insulating rubber seat increase, and the kinematic degrees of freedom of the left limiting member and the right limiting member are restricted to zero.

6. The flip - type FPC connector according to any one of claims 2 - 3, wherein The left limiting member and the right limiting member are respectively formed with a left horizontal limiting arm and a right horizontal limiting arm.

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