CN213043093U - Back-lifting FPC connector assembly - Google Patents

Abstract

The utility model relates to a back lift formula FPC connector assembly, including the FPC connector. The FPC connector comprises an insulating rubber seat, an overturning piece, a first wiring terminal and a second wiring terminal. A series of first terminal insertion grooves matched with the first terminal and a series of second terminal insertion grooves matched with the second terminal are formed in the insulating rubber base at intervals in sequence. The first wiring terminal and the second wiring terminal are formed by connecting an upper cantilever, a middle contact arm and a lower cantilever. The first connecting terminal is inserted into the first terminal insertion groove from back to front, and a first extending welding part welded and fixed with the PCB is extended downwards from the rear free end of the lower cantilever. The second connecting terminal is inserted into the second terminal insertion groove along the front-to-rear direction, and a second extending welding part welded and fixed with the PCB is extended downwards from the front free end of the lower cantilever.

Description

Back-lifting FPC connector assembly

Technical Field

The utility model belongs to the technical field of the FPC connector manufacturing technique and specifically relates to a lift formula FPC connector assembly after.

Background

A Flexible Flat Cable (FFC) is a signal transmission component, which has the advantages of being able to be bent at will and high in signal transmission, and thus is widely used in many electronic products. The flexible flat cable is used in combination with the electronic connector by means of the FPC connector to transmit signals from one end to the other end, so that the purpose of signal transmission is achieved. The method is generally applied to the fields of various digital communication products, portable electronic products, computer peripheral equipment, measuring instruments, automobile electronics and the like.

In practical application, the rear-lift FPC connector can quickly lock/unlock the flat cable, and the molding process is relatively simple, so that the rear-lift FPC connector is increasingly widely used. Generally, an FPC connector includes an insulating paste base, a flip-up member, and a connection terminal. The insulating rubber seat is internally provided with a flat cable plugging groove for plugging a flat cable. And a series of terminal slots are arranged along the left and right directions of the flat cable plugging slot for plugging the wiring terminals. The wiring terminal is in an H-shaped structure and is formed by sequentially connecting an upper cantilever, a middle contact arm and a lower cantilever. The turnover part is hinged with the insulating rubber seat, arranged on the middle contact arm and clamped between the upper cantilever and the lower cantilever. A flat cable guide part extends downwards from the front free end of the upper cantilever. When the turnover piece is pulled, the upper cantilever moves towards/away from the lower cantilever under the action of the middle connection arm, so that the connection/disconnection between the flat cable guide part and the flat cable is realized. In order to realize the electric conduction between the wiring terminal and the PCB, an extension welding part is required to extend downwards from the lower cantilever. In the prior art, the extension welding part is formed by extending the rear free end of the lower cantilever downwards. In addition, the gap value between the connection terminals is only 0.15-0.25mm, so that, on one hand, inconvenience is inevitably caused when the welding operation of the connection terminals and the PCB is performed, and the improvement of the welding efficiency is severely limited; on the other hand, in the welding process, the adhesion phenomenon is easy to occur between adjacent welding spots, and further the reliability and stability of signal transmission are affected. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above-mentioned problems and drawbacks, the present invention provides a connector assembly for a rear lift FPC, which is a continuous experiment and modification performed by technicians in many years of research and development experience in this field, and which is capable of collecting relevant information and evaluating and considering the information.

In order to solve the technical problem, the utility model relates to a back lift formula FPC connector assembly, including FPC connector, PCB board and winding displacement. The FPC connector is fixed on the PCB and used for inserting the flat cable. The FPC connector comprises an insulating rubber seat, an overturning piece and a wiring terminal assembly. Wherein, a flat cable plugging groove is arranged in the insulating rubber seat and extends from front to back for plugging the flat cable. The wiring terminal assembly is composed of a plurality of first wiring terminals and second wiring terminals which are arranged at intervals. A series of terminal slots are arranged along the left and right directions of the flat cable plugging slot. The first wiring terminal is in an H structure and is formed by connecting a first upper cantilever, a first middle contact arm and a first lower cantilever. The second connecting terminal is of an H structure and is formed by connecting a second upper cantilever, a second middle connecting arm and a second lower cantilever. The turnover part is hinged with the insulating rubber seat, arranged right behind the first middle part contact arm and the second middle part contact arm and simultaneously clamped between the first upper cantilever and the first lower cantilever as well as the second upper cantilever and the second lower cantilever. The terminal insertion groove is composed of a first terminal insertion groove matched with the first terminal and a second terminal insertion groove matched with the second terminal, which are sequentially arranged at intervals. The first connecting terminal is inserted into the first terminal insertion groove from back to front, and a first extending welding part extends downwards from the rear free end of the first lower cantilever. The second connecting terminal is inserted into the second terminal insertion groove along the front-to-rear direction, and a second extending welding part extends downwards from the front free end of the second lower cantilever. The first extending welding part and the second extending welding part are welded and fixed on the PCB.

As the technical scheme of the utility model the further improvement, the PCB board includes base member board, rearmounted soldering lug and leading soldering lug. The number of the rear welding sheets is consistent with that of the first connecting terminals, and the rear welding sheets are welded between the base plate and the first extending welding parts. The number of the front soldering lugs is consistent with that of the second wiring terminals, and the front soldering lugs are welded between the base plate and the second extension soldering parts.

As a further improvement of the technical proposal of the utility model, the front free end of the first extending welding part is obliquely cut backwards to form a first guiding oblique plane. The rear free end of the second extending welding part is chamfered forwards to form a second guiding inclined surface.

As the utility model discloses technical scheme's further improvement, the rearmounted free end of cantilever is gone up by first last cantilever, second and is extended downwards respectively and has the spacing section of first arc, the spacing section of second arc.

As a further improvement of the technical scheme of the utility model, just corresponding to the spacing section of first arc, seted up first elasticity reinforcing groove on first cantilever. The first elasticity enhancing groove is formed by cutting the rear end face of the first lower cantilever forwards.

Compared with the rear-lift type FPC connector assembly with the traditional design structure, the rear-lift type FPC connector assembly comprises a first connecting terminal and a second connecting terminal which are arranged alternately in two different design structures, in addition, the welding part of the first connecting terminal and the PCB is arranged at the rear end of the rear-lift type FPC connector assembly, the welding part of the second connecting terminal and the PCB is arranged at the front end of the rear-lift type FPC connector assembly, and therefore sufficient operation space is reserved for subsequent welding processes. Therefore, on one hand, the welding efficiency of the first connecting terminal and the second connecting terminal is effectively improved, and the total time required by the forming of the assembly of the rear-lift FPC connector is reduced; on the other hand, the distance between the welding spots is larger, so that the phenomenon of adhesion of the welding spots is avoided, and the reliability and the stability of signal transmission are further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the assembly of the middle and rear lifting type FPC connector of the present invention (after the flat cable is hidden).

Fig. 2 is a perspective view of the rear-lift FPC connector in the rear-lift FPC connector assembly of the present invention.

Fig. 3 is an exploded view of the rear lift FPC connector of the assembly of the present invention.

Fig. 4 is a perspective view of the rear-lift FPC connector in the rear-lift FPC connector assembly of the present invention (with the insulating rubber seat hidden).

Fig. 5 is a perspective view of an insulation rubber seat in the assembly of the rear-lift FPC connector according to the present invention.

Fig. 6 is a perspective view of another view of the insulating rubber seat in the assembly of the rear-lift FPC connector of the present invention.

Fig. 7 is a perspective view of the first connecting terminal of the rear-lift FPC connector assembly of the present invention.

Fig. 8 is a perspective view of the second connecting terminal of the rear-lift FPC connector assembly of the present invention.

Fig. 9 is a schematic perspective view of a PCB board in the assembly of the rear lift-type FPC connector of the present invention.

1-FPC connector; 11-an insulating rubber base; 111-flat cable plugging grooves; 112-terminal slot; 1121-first terminal insertion groove; 1122-second terminal insertion groove; 12-a flip-over member; 13-a terminal assembly; 131-a first connection terminal; 1311-first upper cantilever; 13111-a first arc-shaped spacing segment; 1312-a first middle link arm; 1313-first lower cantilever; 13131 — first extension weld; 131311-first guide ramp; 13132-first elasticity-enhancing groove; 132-a second connection terminal; 1321-a second upper cantilever; 13211-a second arc-shaped spacing segment; 1322-a second middle linkage arm; 1323-a second lower cantilever; 13231-second extension weld; 132311-second guide ramp; 2-a PCB board; 21-a base plate; 22-rear soldering lug; 23-front solder pad.

Detailed Description

In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the following, the contents of the present invention will be further described in detail with reference to the specific embodiments, and fig. 1 shows a schematic perspective view of a rear-lift type FPC connector assembly (after the flat cable is hidden), which mainly comprises an FPC connector 1, a PCB 2, and a flat cable (not shown in the figure). The FPC connector 1 is fixed to the PCB 2 and is used to insert a flat cable, thereby realizing signal transmission.

Fig. 2 is a schematic perspective view of the rear-lift FPC connector assembly of the present invention, which is mainly composed of an insulating rubber seat 11, a turnover part 12, a terminal block assembly 13, and the like. The insulating rubber base 11 is provided with a flat cable insertion groove 111 therein, and extends from front to back for inserting a flat cable. A series of terminal insertion grooves 112 are formed along the left and right directions of the flat cable insertion groove 111. The terminal assembly 13 is inserted into the terminal slot 112 for connecting the flat cable and the PCB board 2. The turnover part 12 is hinged with the insulating rubber base 11 and can lock/unlock the flat cable by rotating the turnover part.

As shown in fig. 4, the terminal assembly 13 is composed of a plurality of first and second terminals 131 and 132 spaced apart from each other. As shown in fig. 7, the first connection terminal 131 is in an "H-configuration" and is formed by connecting a first upper cantilever 1311, a first middle connection arm 1312 and a first lower cantilever 1313. As shown in fig. 8, the second terminal 132 is in an "H-frame" structure, and is formed by connecting a second upper cantilever 1321, a second middle contact arm 1322 and a second lower cantilever 1323. The flip member 12 is hinged to the seat 11, disposed right behind the first and second middle link arms 1312 and 1322, and interposed between the first upper suspension arm 1311 and the first lower suspension arm 1313, and the second upper suspension arm 1321 and the second lower suspension arm 1323. When the flip-flop 12 is rotated, under the action of the first intermediate connecting arm 1312 and the second intermediate connecting beam 1322, the first upper suspension arm 1311 moves toward/away from the first lower suspension arm 1313 and the second upper suspension arm 1321 moves toward/away from the second lower suspension arm 1323, i.e., the first connection terminal 131, the second connection terminal 132 and the flat cable are connected/disconnected. As shown in fig. 5 and 6, the terminal insertion groove 112 is composed of a first terminal insertion groove 1121 adapted to the first connection terminal 131 and a second terminal insertion groove 1122 adapted to the second connection terminal 132, which are sequentially spaced apart. As shown in fig. 3, the first connection terminal 131 is inserted into the first terminal insertion groove 1121 along the direction from back to front, and a first extension welding portion 13131 (shown in fig. 7) extends downward from the rear free end of the first lower cantilever 1313. The second wire connecting terminal 132 is inserted into the second terminal insertion groove 1122 from the front-to-rear direction, and a second extending welding portion 13231 (shown in fig. 8) extends downward from the front free end of the second lower cantilever 1323. The first extension soldering part 13131 and the second extension soldering part 13231 are soldered and fixed to the PCB board 2 (as shown in fig. 1). Through adopting above-mentioned technical scheme to set up to reserve sufficient operating space to subsequent welding process. Thus, on one hand, the welding efficiency of the first connection terminals 131 and the second connection terminals 132 is effectively improved, and the total time required for forming the rear-lift type FPC connector assembly is reduced; on the other hand, the distance between the welding spots is larger, so that the phenomenon of adhesion of the welding spots is avoided, and the reliability and the stability of signal transmission are further ensured.

In order to reduce the difficulty of assembly and improve the assembly efficiency, guiding inclined planes may be disposed at the inlet ends of the first terminal insertion groove 1121 and the second terminal insertion groove 1122 to make a cushion for smooth insertion of the first connection terminal 131 and the second connection terminal 132.

In the conventional process, the connecting terminal is directly soldered to the PCB. When a welding operation is performed, the substrate is easily damaged, thereby causing unstable signal transmission. In addition, in order to adapt to the welding of the connecting terminal, a great deal of structural improvement needs to be carried out on the PCB, so that the forming difficulty and the manufacturing cost are increased. In view of this, as a further optimization of the above-mentioned back-lift FPC connector assembly structure, as shown in fig. 9, the PCB 2 is preferably a split design structure, i.e., it includes a base plate 21, a rear tab 22 and a front tab 23. The number of the post tabs 22 corresponds to the number of the first connection terminals 131, and is welded between the base plate 21 and the first extension welding part 13131. The leading tabs 23 are equal in number to the second connection terminals 132, and are welded between the base plate 21 and the second extension weld 13231.

In the actual manufacturing process of the PCB, the base plate 21, the rear bonding pad 22 and the front bonding pad 23 are individually molded, and then the rear bonding pad 22 and the front bonding pad 23 are fixed to the base plate 21 by soldering or conductive glue connection.

In performing the soldering operation of the FCB electrical connector 1 and the PCB 2, the free end of the first extension solder 13131 may be chamfered backward to form a first guiding inclined surface 131311 (as shown in fig. 7) in order to prevent the front solder 23 and the rear solder 22 from being scratched and thus affecting the stability of signal transmission. Is chamfered forwardly from the rearward free end of the second extension weld 13231 to form a second guide ramp surface 132311 (shown in fig. 8).

As is clear from the above description, the flipper 12 is swingably interposed between the first upper boom 1311 and the first lower boom 1313 and between the second upper boom 1321 and the second lower boom 1323. When the flip-flop 12 is rotated, the first upper suspension arm 1311 and the second upper suspension arm 1321 are inevitably axially moved, and in the past, the welding points of the first connection terminal 131, the second connection terminal 132, the rear soldering lug 22 and the front soldering lug 23 are inevitably fatigued, so that the connection is easily disconnected. In view of this, a first arc-shaped limiting section 13111 and a second arc-shaped limiting section 13211 (shown in fig. 7 and 8) may extend downward from the rear free ends of the first upper cantilever 1311 and the second upper cantilever 1321, respectively.

Finally, in order to take account of the reliability of the flat cable locking and the flexibility of the turning piece 12, a first elastic enhancement groove 13131 may be formed on the first lower suspending arm 1313 corresponding to the first arc-shaped limiting section 13111. First resiliency enhancing channel 13131 is cut forward from the rear end face of first lower cantilever 1313 (as shown in fig. 7). The presence of the first resilient reinforcement groove 13131 is advantageous to ensure that the first terminal 131 always maintains a suitable resilient pressing force against the flip 12.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A rear lift type FPC connector assembly comprises an FPC connector, a PCB and a flat cable; the FPC connector is fixed on the PCB and is used for inserting the flat cable; the FPC connector comprises an insulating rubber seat, an overturning piece and a wiring terminal assembly; the insulating rubber seat is internally provided with a flat cable inserting groove which extends from front to back for inserting the flat cable; the wiring terminal assembly is composed of a plurality of first wiring terminals and second wiring terminals which are arranged at intervals; a series of terminal slots are arranged along the left and right directions of the flat cable plugging slot; the first wiring terminal is in an H structure and is formed by connecting a first upper cantilever, a first middle contact arm and a first lower cantilever; the second wiring terminal is in an H-shaped structure and is formed by connecting a second upper cantilever, a second middle contact arm and a second lower cantilever; the terminal slot is characterized in that the terminal slot is composed of a first terminal insertion slot matched with the first terminal and a second terminal insertion slot matched with the second terminal which are sequentially arranged at intervals; the first wiring terminal is inserted into the first terminal insertion groove from back to front, and a first extension welding part extends downwards from the rear free end of the first lower cantilever; the second connecting terminal is inserted into the second terminal insertion groove along the front-to-rear direction, and a second extending welding part extends downwards from the front free end of the second lower cantilever; the first extending welding part and the second extending welding part are welded and fixed on the PCB.

2. A rear lift FPC connector assembly as in claim 1, wherein the PCB board includes a base plate, a rear tab and a front tab; the number of the rear welding sheets is consistent with that of the first connecting terminals, and the rear welding sheets are welded between the base plate and the first extension welding parts; the number of the front soldering lugs is consistent with that of the second wiring terminals, and the front soldering lugs are welded between the base plate and the second extension welding parts.

3. A rear lift FPC connector assembly as claimed in claim 2, wherein the leading free end of the first extension weld is chamfered rearwardly to form a first lead ramp surface; and the rear free end of the second extension welding part is chamfered forwards to form a second guide inclined surface.

4. A rear lift-off FPC connector assembly as in any one of claims 1-3, wherein a first arc-shaped retaining section and a second arc-shaped retaining section extend downwardly from the rear free ends of the first upper cantilever and the second upper cantilever, respectively.

5. The back-lift FPC connector assembly of claim 4, wherein a first elastic enhancement groove is formed on the first lower suspension arm just corresponding to the first arc-shaped position-limiting section; the first elasticity enhancing groove is formed by cutting the rear end face of the first lower cantilever forwards.

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