CN102253249A

CN102253249A - Flexible printed circuit (FPC) testing wire

Info

Publication number: CN102253249A
Application number: CN2011101105308A
Authority: CN
Inventors: 张洋; 李博; 汪翠兰
Original assignee: Hisense Mobile Communications Technology Co Ltd
Current assignee: Hisense Mobile Communications Technology Co Ltd
Priority date: 2011-04-29
Filing date: 2011-04-29
Publication date: 2011-11-23

Abstract

The invention discloses a flexible printed circuit (FPC) testing wire, which comprises a plurality of mainboard spigots for being plugged with a connector on a printer circuit board assembly (PCBA) of electronic equipment correspondingly and at least one part spigot for being plugged with a connector on a part to be assembled correspondingly, wherein a plurality of mainboard spigots are connected in parallel and are connected with pins of which the interface definitions are the same in the part spigots correspondingly. In the FPC testing wire, when one of a plurality of connector spigots which are connected in parallel cannot be used due to serious abrasion, the next spigot can be used as a connector for testing, so the service life of the FPC testing wire is prolonged, the human input for fixture maintenance and the suspended state in which a testing station is positioned in the fixture maintenance process are reduced, and the efficiency of the integral testing is improved. In addition, the service life of the single FPC testing wire is prolonged, so the purchasing cost of the FPC testing wire is reduced substantially, the single-machine cost of the PCBA is reduced, and the produced products have a price advantage.

Description

A kind of FPC p-wire

Technical field

The invention belongs to the circuit board testing technical field, specifically, relate to a kind of a kind of subconnector spare of using when being used to simulate the complete machine functional test.

Background technology

In the mobile phone production procedure, need be with mobile phone PCBA(Pinter Circuit Board Assembly, the i.e. circuit board of the various electron devices of fit on) behind the every radio frequency and functional parameter test passes, it can be changed over to the assembling link of assembling parts.At this moment, because the parts to be assembled of mobile phone are not installed on the PCBA, therefore the complete machine functional test of PCBA just needs to make the functional test frock, subconnector spares such as probe by anchor clamps of the PCBA of mobile phone, FPC p-wire with after parts to be assembled are connected, could be begun PCBA is simulated the complete machine functional test.

FPC is the abbreviation of Flexible Printed Circuit, i.e. flexible printed circuit board.Operated by rotary motion has the male 12 of a board to board connector and the female 11 of a board to board connector on existing FPC p-wire 10, as shown in Figure 1.When the PCBA 13 that uses 10 pairs of mobile phones of FPC p-wire carries out functional test, the female of the board to board connector on the male 12 of FPC p-wire 10 and the mobile phone PCBA 13 need be connected slotting on the one hand, as shown in Figure 2; On the other hand, need the female 11 of FPC p-wire 10 is first-class such as shooting with parts 14(to be assembled) on the male of board to board connector is connected inserting, and then realization PCBA 13 is communicated with the circuit of parts 14 to be assembled.Board to board connector to inserting in the process, can produce wearing and tearing to a certain degree to the coat of metal of connector, and wearing and tearing in various degree also can appear in its base material, therefore, connector can corresponding certain serviceable life in the plug use.When board to board connector may wear to the correctness of the stability that influences its test or test result, this FPC p-wire just can not continue to have used again.

When the production quantity of FPC p-wire is between 20 ~ 1000, processing producer is for the consideration of cost of manufacture, the processing technology of FPC p-wire generally all is to adopt the flow process of sample processing, producer can not drop into the processing technology and the equipment making of volume production, the quotation of single sample is than the batch making height, therefore, cause the unit price of FPC p-wire also than higher.The FPC p-wire mainly is used in the test process of PCBA, when quantity on order between 10K ~ 1000K the time, the FPC p-wire quantity that is used to test also is in the interval of sample processing substantially according to the production statistical conditions, it is higher relatively therefore to make price.

Summary of the invention

The present invention proposes a kind of FPC p-wire of brand new,, reach the purpose of design of the buying expenses that reduces the FPC p-wire by prolonging the serviceable life of FPC p-wire.

For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:

A kind of FPC p-wire, comprise the mainboard socket of the corresponding grafting of connector on a plurality of PCBA that are used for electronic equipment and at least one be used for parts to be assembled on the parts socket of the corresponding grafting of connector, after the parallel connection of a plurality of mainboard socket, identical with interface definition in the parts socket more corresponding connection of each pin.

Wherein, described parts socket preferably is provided with one; When described parts socket includes when a plurality of, a plurality of parts sockets are in parallel.

Further, described a plurality of mainboard socket forms one group to be separated with described parts socket and to be laid on the FPC p-wire, and in this group mainboard socket, a plurality of mainboard socket adjacent spaces are laid, so that after certain mainboard socket heavy wear, conveniently the FPC p-wire is pruned.

Preferably, described mainboard socket is laid in the front of FPC p-wire, and described parts socket is laid in the back side of FPC p-wire.

Further, on the opposing face of each the mainboard socket laid on the described FPC p-wire and parts socket, be provided with a back-up block, to make things convenient for the grafting of socket.

Preferably, described back-up block is steel disc or epoxy plate etc.

Profile for described FPC p-wire can be designed to difformity, such as strip, L shaped or stepped appearance etc.When described FPC p-wire was L-shaped, described a plurality of mainboard socket preferred cloth were located at the long limit of L shaped FPC p-wire, and the parts socket is laid in the minor face of L shaped FPC p-wire.When described FPC p-wire is stepped appearance, preferably lay a described mainboard socket or parts socket at one of them flex point place on each rank.

Further again, the printed wire of described FPC p-wire is laid on 2 layers the flexible PCB at least, and trace width is value in the scope of [0.1mm, 0.2mm] preferably.

Further, male or female that described mainboard socket is a connector, its quantity are preferably between 3 to 6; Accordingly, female or male that described parts socket is a connector preferably are provided with one.

Compared with prior art, advantage of the present invention and good effect are: FPC p-wire of the present invention is by laying the connector socket of a plurality of parallel connections, when a socket serious wear can't be used, can use next socket as test connector, thereby can prolong the serviceable life of FPC p-wire greatly.Owing to the lifting in serviceable life of FPC p-wire, can reduce the human input that frock is safeguarded on the one hand; Can reduce the situation that test station in the frock maintenance process is in halted state on the other hand, thereby reduce influence system test efficient.In addition, this FPC p-wire also because of the wall scroll prolongation in serviceable life, makes the buying expenses of FPC p-wire significantly reduce, thereby has reduced the unit cost of PCBA, makes the product of producing have more price advantage.

After reading the detailed description of embodiment of the present invention in conjunction with the accompanying drawings, other characteristics of the present invention and advantage will become clearer.

Description of drawings

Fig. 1 is the structural representation of existing FPC p-wire;

Fig. 2 is to use the connected mode synoptic diagram of existing FPC p-wire;

Fig. 3 is the Facad structure synoptic diagram of first kind of embodiment of FPC p-wire proposed by the invention;

Fig. 4 is the structure synoptic diagram of FPC p-wire shown in Figure 3;

Fig. 5 is the Facad structure synoptic diagram of second kind of embodiment of FPC p-wire proposed by the invention;

Fig. 6 is the structure synoptic diagram of FPC p-wire shown in Figure 5;

Fig. 7 is the Facad structure synoptic diagram of the third embodiment of FPC p-wire proposed by the invention;

Fig. 8 is the structure synoptic diagram of FPC p-wire shown in Figure 7;

Fig. 9 is to use the connected mode synoptic diagram of FPC p-wire shown in Figure 3;

Figure 10 is to use the connected mode synoptic diagram of FPC p-wire shown in Figure 5;

Figure 11 is to use the connected mode synoptic diagram of FPC p-wire shown in Figure 7;

Figure 12 is the circuit theory diagrams of a kind of embodiment of FPC p-wire proposed by the invention;

Figure 13 adopts FPC p-wire shown in Figure 3 to prune the synoptic diagram of a kind of embodiment of use in actual use;

Figure 14 adopts FPC p-wire shown in Figure 3 to prune the synoptic diagram of another embodiment of use in actual use.

Embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.

Embodiment one, present embodiment is in order to prolong the serviceable life of FPC p-wire, be provided with simultaneously on the single FPC p-wire a plurality of be used for PCBA on the connector socket (below be called the mainboard socket) of the corresponding grafting of connector socket, and at least one be used for parts to be assembled on the connector socket (below be called the parts socket) of the corresponding grafting of connector socket.A plurality of mainboard sockets are in parallel, and identical with interface definition on the parts socket then pin connects one to one, can realize the signal communication of mainboard socket and parts socket thus.

Described mainboard socket and parts socket can carry out the specific design of FPC p-wire respectively according to the connector socket type selecting socket type adaptive with it on PCBA and the parts to be assembled.For example: if the attachment unit interface on the PCBA is a female, then the mainboard socket should be selected the male of connector; Otherwise if the connector on the PCBA is a male, then the mainboard socket should be female.Same, if the attachment unit interface of parts to be assembled is a male, then the parts socket should be selected female; Otherwise when if the connector of parts to be assembled is female, then the parts socket should be male.Present embodiment is that example is specifically described with the connector that is used to connect camera on the mobile phone PCBA.Suppose that the camera attaching device on the mobile phone PCBA is a female, the connector of camera is a male, then when design FPC p-wire the male of a plurality of connectors and the female of at least one connector should be set simultaneously on p-wire.After considering that in a single day the FPC p-wire pegs graft with camera in actual use, generally do not need again camera to be pulled up, only need the FPC p-wire of the camera of having pegged graft is plugged on the different mobile phone PCBA, the PCBA of different mobile phones is carried out functional test get final product.Therefore, be not easy to wear and tear, can only on the FPC p-wire, be provided with one, to reduce the cost of FPC p-wire as the female of parts socket; Then owing to need often plug, easily cause wearing and tearing as the male of mainboard socket, therefore need be provided with a plurality of simultaneously.

Present embodiment is to be provided with three males 3 simultaneously and a female 1 is that example describes, as shown in Figure 3, Figure 4 on FPC p-wire 2.Three males 3 are formed one group separate laying, follow-up male 3 is pruned to make things convenient for female 1.Such as an end that female 1 can be arranged on FPC p-wire 2, remainder is laid described three males 3, makes the 3 adjacent and settings at interval of three males.Described three males 3 are in parallel, and then are connected with female 1, as shown in figure 12, are about to male 3 and are connected with each identical function pin correspondence of interface definition on the female 1, to guarantee the correct transmission of signal between mobile phone PCBA and camera.

Certainly, also can on FPC p-wire 2, lay a plurality of simultaneously as the female 1 of unit interface according to the needs that reality is used.If in the time of need laying a plurality of female 1 simultaneously, the connected mode that then can copy male 3 among Figure 12 with a plurality of female 1 parallel connections after, again with the male 3 corresponding connections of parallel connection, soon each identical function pin of interface definition is connected correspondingly on male 3 and the female 1.

The minimum feature and the distance between centers of tracks of the inside cabling of described FPC p-wire 2 can be set to 0.1mm, wherein, and power lead and special power supply is arranged or the cabling of impedance requirement can be widened to 0.2mm.If male 3 and female 1 are arranged on the same one side of FPC p-wire, and the profile width of FPC p-wire is enough, and one deck flexible PCB can only be set.But less in view of the space on the test fixture, and the FPC p-wire is generally narrow, therefore preferably circuit is printed on more than or equal on 2 layers the flexible PCB, to make things convenient for the topological design of the inner cabling of FPC p-wire.

In the present embodiment, described male 3 and female 1 can be laid on the same one side of FPC p-wire 2; Also can lay respectively on the branch two sides, such as the front that female 1 can be laid in FPC p-wire 2, as shown in Figure 3, and male 3 is laid in the back side of FPC p-wire 2, as shown in Figure 4.The plug of connector for convenience, the also preferred reverse side that the position of male 3 and female 1 is installed on FPC p-wire 2 adds back-up block 4, and as shown in Figure 3, Figure 4, each male 3 and female 1 corresponding back-up block 4 are to increase the intensity of connector.In the present embodiment, described back-up block 4 can select for use designs such as steel plate or FR4 epoxy plate to realize, present embodiment is not limited in above giving an example.

In actual use, at first female on the FPC p-wire 21 and camera 7 are pegged graft, with being positioned on the FPC p-wire 2 on the connector female that outermost male 3 is plugged into mobile phone PCBA, as shown in Figure 9, begin this PCBA is simulated the functional test of complete machine then.If be positioned at outermost male 3 serious wear, when influencing the stability of test result and correctness, can this male be pruned away together with one section FPC p-wire attached thereto with instruments such as cutting nippers, scissors, make next male (promptly originally being positioned at the male in centre position) become the upward continuation use of PCBA that test connector is plugged into mobile phone, referring to shown in Figure 13.When if situation that heavy wear can't use also appears in this male after long-time the use, can further it be pruned away, use a remaining male as test connector, be plugged into and continue on the connector of PCBA to use, referring to shown in Figure 14, thus can be so that obtain 3 times lifting the serviceable life of FPC p-wire 2.If the mainboard socket of laying on the p-wire then can be so that be able to more times lifting the serviceable life of FPC p-wire more than three.It should be noted that: the electrical property characteristics that number and tested parts are set of board to board connector have certain relation, because the data of transmitting in the FPC p-wire often all are the higher digital signals of frequency, under factory's complex electromagnetic environments (electromagnetic interference (EMI) that electromagnetic interference (EMI), workshop other products and the other products test instrumentation that produces when the electromagnetic interference (EMI) that the instrument that is used to test produces, PCBA energising test itself produces), for making the FPC p-wire have reliable antijamming capability, the mainboard socket quantity of board to board connector is the best with 3 ~ 6.In actual application, only need to do the debugging checking slightly, can determine the optimum of connector and lay quantity.

The laying mode of the general shape of described FPC p-wire, length, each connector need satisfy on test fixture rationally puts, so the specific design mode can be different.L shaped such as the FPC p-wire being designed to, as Fig. 5, shown in Figure 6, parts socket (is example with female 1) is arranged on the minor face of L shaped FPC p-wire 5, peg graft with parts to be assembled (is example with camera 7) with convenient, as shown in figure 10; Mainboard socket (is example with male 3) is arranged the long limit that is laid in L shaped FPC p-wire 5, and the mobile phone PCBA that is used to peg graft is conveniently to build complete test macro.Certainly, also the FPC p-wire can be designed to stepped appearance,, described male 3 and female 1 be set at one of them flex point place on each rank as Fig. 7, shown in Figure 8.Wherein, female 1 is arranged on a wherein end in stepped appearance FPC p-wire 6 fronts, as shown in Figure 7, with its position opposing backside surface back-up block 4 is installed; Male 3 is separately positioned on one of them flex point place on other each rank at stepped appearance FPC p-wire 6 back sides, as shown in Figure 8, and back-up block 4 of the front of the p-wire 6 relative with each the male 3 position corresponding installation of difference.The annexation of described FPC p-wire 6 in actual application is referring to shown in Figure 11.

Certainly, the profile of FPC p-wire can also be designed to other forms according to the concrete needs of test macro, and present embodiment is not limited in above giving an example.Described male 3 and female 1 also can be carried out adaptability according to the particular type of the connector that is provided with on PCBA and the parts to be assembled and be selected.

The FPC p-wire of present embodiment is applied to mobile phone PCBA or adopts in the functional test of electronic equipment PCBA of similar connected mode, serve as the subconnector spare between PCBA and the parts to be assembled, PCBA is simulated the functional test of complete machine, thereby can reduce production cost and the frock maintenance cost of PCBA, and then reach the purpose of design that reduces electronic product unit cost.

Certainly; the above only is a kind of preferred implementation of the present invention, for those skilled in the art, and under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. FPC p-wire, it is characterized in that: comprise the mainboard socket of the corresponding grafting of connector on a plurality of PCBA that are used for electronic equipment and at least one be used for parts to be assembled on the parts socket of the corresponding grafting of connector, after the parallel connection of a plurality of mainboard socket, identical with interface definition in the parts socket more corresponding connection of each pin.

2. FPC p-wire according to claim 1 is characterized in that: when described parts socket includes when a plurality of, a plurality of parts sockets are in parallel.

3. FPC p-wire according to claim 1 and 2 is characterized in that: described a plurality of mainboard sockets form one group to be separated with described parts socket and to be laid on the FPC p-wire, and in this group mainboard socket, a plurality of mainboard socket adjacent spaces are laid.

4. FPC p-wire according to claim 3 is characterized in that: described mainboard socket is laid in the front of FPC p-wire, and described parts socket is laid in the back side of FPC p-wire.

5. FPC p-wire according to claim 3 is characterized in that: be provided with a back-up block on the opposing face of each the mainboard socket laid on the described FPC p-wire and parts socket.

6. FPC p-wire according to claim 5 is characterized in that: described back-up block is steel disc or epoxy plate.

7. FPC p-wire according to claim 3 is characterized in that: described FPC p-wire is L-shaped, and a plurality of mainboard sockets are laid in the long limit of L shaped FPC p-wire, and the parts socket is laid in the minor face of L shaped FPC p-wire.

8. FPC p-wire according to claim 3 is characterized in that: described FPC p-wire is stepped appearance, lays a mainboard socket or parts socket at one of them flex point place on each rank.

9. FPC p-wire according to claim 3 is characterized in that: the printed wire of described FPC p-wire is laid on 2 layers the flexible PCB at least, and trace width is value in the scope of [0.1mm, 0.2mm].

10. FPC p-wire according to claim 3 is characterized in that: male or female that described mainboard socket is a connector, and its quantity is between 3 to 6; Female or male that described parts socket is a connector.