CN205987344U

CN205987344U - FPCB structure and speaker module

Info

Publication number: CN205987344U
Application number: CN201620800692.2U
Authority: CN
Inventors: 伦英军; 张翠丽
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2016-07-27
Filing date: 2016-07-27
Publication date: 2017-02-22
Anticipated expiration: 2026-07-27

Abstract

The utility model provides a FPCB structure and speaker module, wherein the former includes FPCB body and bending segment, definition the bending segment with there is the virtual datum line of buckling in the position of buckling between the FPCB body, the bending segment with the datum line of buckling is relative for the benchmark buckle in FPCB body place plane, on the copper foil layer of FPCB structure with be equipped with the via hole on the corresponding position of the datum line of buckling. The utility model discloses a set up the via hole on the copper foil layer of FPCB structure, buckle the stress dispersion that the department concentrated with the FPCB structure and weaken, prevent the copper foil layer fracture of FPCB structure for can select for use the lower electrolysis copper of cost as the substrate of FPCB structure, thus the cost of control FPCB structure, in addition the via hole setting still make buckle more convenient.

Description

A kind of FPCB structure and speaker module

Technical field

This utility model is related to flexible printed circuit board field, more specifically, this utility model is related to a kind of FPCB structure, And apply the speaker module of this FPCB structure.

Background technology

FPCB (Flexible Printed Circuit Board) refers to flexible printed circuit board, and it is a kind of using soft The printed circuit board (PCB) with figure that property base material is made.Compare with rigid printed circuit board (PCB), FPCB possess free bend, The advantages of fold, wind.During completed knocked down products, FPCB arbitrarily can be arranged according to the layout in interiors of products space as wire Cloth, such that it is able to components and parts of arbitrarily arranging in three dimensions, and also can cancel adapter between wire and wiring board Part, therefore, FPCB can make miniaturization of electronic products, precise treatment, and product reliability greatly improves.FPCB has been widely used in shifting The fields such as dynamic communication products, laptop computer, consumer electronics product, space flight, Military Electronic Equipment.

At present, become increasingly complex with electronic product structure, the also more and more higher of the requirement to FPCB, the application of FPCB is more next More extensive, above-mentioned FPCB refers to need in application process FPCB is operated.

Copper is cost accounting weight the best part (accounting for 40%) in whole FPCB composition, therefore, based on cost control Consider, generally first-selected lower-cost cathode copper (ED copper), but easy fracture when cathode copper has the shortcomings that, particularly work as FPCB Bending angle excessive, for example extremely roll over (i.e. 180 °) when, the stress high concentration of bending place and cannot discharge, will lead in FPCB The Copper Foil fracture in portion.In order to prevent the Copper Foil within FPCB from rupturing, FPCB have to the higher calendering copper of alternative costs (RA copper or Person's HA copper).

Utility model content

A purpose of the present utility model is to provide a kind of FPCB structure that can effectively prevent the Copper Foil within FPCB from rupturing.

According to one side of the present utility model, provide a kind of FPCB structure, including FPCB body and bending segment, define institute State the crooked place between bending segment and described FPCB body and there is virtual bending datum line, described bending segment is with described bending On the basis of datum line, described FPCB body place plane relatively is bent, with described bending on the copper foil layer of described FPCB structure The corresponding position of datum line is provided with via.

Optionally, described via is with the described bending axially symmetric structure as axis of symmetry for the datum line.

Optionally, described via is waist-shaped hole, rectangular opening or circular hole.

Optionally, the copper foil layer width between two neighboring via is more than or equal to the width of described via.

Optionally, it is provided with, along described bending datum line, the crease line being formed by raised, depression or color mark.

Optionally, it is provided with one layer of copper foil layer in described FPCB structure.

Optionally, be provided with two-layer copper foil layer in described FPCB structure, including positioned at bending inner side internal layer Copper Foil and be located at The outer copper foil in bending outside, is provided with via on the position corresponding with described bending datum line on described internal layer Copper Foil.

Optionally, the outer copper foil of the described FPCB structure position corresponding with described bending datum line also was provided with Hole.

Optionally, the via on described internal layer Copper Foil and described outer copper foil is crisscross arranged.

Another purpose of the present utility model is to provide a kind of speaker mould applying FPCB structure of the present utility model Group.

According to second aspect of the present utility model, there is provided a kind of speaker module, including module shell and be installed on institute State the loudspeaker monomer in module shell, described speaker module also includes FPCB structure of the present utility model, described FPCB knot One end of structure electrically connects described loudspeaker monomer, and the other end is used for electrically connecting external circuit.

Inventor of the present utility model finds, in the prior art, be implicitly present in FPCB structure stress cannot discharge and Lead to the problem of the Copper Foil fracture of inside.Therefore, this utility model technical assignment to be realized or technology to be solved Problem be that those skilled in the art never expect or it is not expected that, therefore this utility model is a kind of new technical side Case.

One of the present utility model has technical effect that, by arranging via on the copper foil layer of FPCB structure, by FPCB The stress dispersion that structure bending place is concentrated weakens, and prevents the Copper Foil fault rupture of FPCB structure so that can be selected for lower-cost electricity As the base material of FPCB structure, thus controlling the cost of FPCB structure, and via setting also makes bending convenient to solution copper.

By the detailed description to exemplary embodiment of the present utility model referring to the drawings, other of the present utility model Feature and its advantage will be made apparent from.

Brief description

Constitute the Description of Drawings of a part the embodiment of the present utility model of description, and use together with the description In explanation principle of the present utility model.

Fig. 1 is the structural representation of the embodiment of this utility model FPCB structure；

Fig. 2 is the partial enlarged drawing of Fig. 1；

Fig. 3 is the structural representation after the embodiment bending of this utility model FPCB structure；

Fig. 4 is for A-A in Fig. 3 to cut-away view.

In figure indicates as follows：

FPCB body -1, bending segment -2, location hole -21, crease line -3, internal layer Copper Foil -4, via -5, base material -6, outer layer Copper Foil -7, coverlay -8.

Specific embodiment

To describe various exemplary embodiment of the present utility model now with reference to accompanying drawing in detail.It should be noted that：Unless it is another Illustrate outward, the positioned opposite, numerical expression of the part otherwise illustrating in these embodiments and step and numerical value do not limit Make scope of the present utility model.

Description only actually at least one exemplary embodiment is illustrative below, never as to this practicality Any restriction that is new and its applying or use.

May be not discussed in detail for technology and equipment known to person of ordinary skill in the relevant, but in suitable situation Under, described technology and equipment should be considered a part for description.

In all examples with discussion shown here, any occurrence should be construed as merely exemplary, and not It is as restriction.Therefore, other examples of exemplary embodiment can have different values.

It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then do not need it is further discussed in subsequent accompanying drawing.

In order to solve the Copper Foil easy fracture within FPCB, the problem of FPCB high cost, the utility model proposes a kind of FPCB structure, as shown in Figures 1 to 4, including FPCB body 1 and bending segment 2, defines described bending segment 2 and described FPCB body 1 Between crooked place there is virtual bending datum line, described bending segment 2 by described bending datum line on the basis of relatively described FPCB body 1 place plane is bent, and above-mentioned bending datum line is dummy line, but can pass through projection etc. in actual applications Mode is marked to facilitate bending to bending datum line, and particular content will subsequently illustrate；The copper foil layer of described FPCB structure with The corresponding position of described bending datum line is provided with via 5.

This utility model passes through to arrange via 5 on the copper foil layer of FPCB structure, by answering that FPCB structure bending place is concentrated Power dispersion weakens, and prevents the Copper Foil fault rupture of FPCB structure so that can be selected for lower-cost cathode copper as FPCB structure Base material, thus controlling the cost of FPCB structure, and via 5 arranges and also makes bending convenient.

Further, described via 5 is with the described bending axially symmetric structure as axis of symmetry for the datum line, and this set is favourable In the Copper Foil fault rupture more efficiently preventing from FPCB structure.

The shapes and sizes of via 5 all can select according to the actual requirements, for example via 5 be waist-shaped hole, elliptical aperture, circular hole or Rectangular opening etc..

Optionally, the copper foil layer width between two neighboring via 5 is more than or equal to the width of described via 5, to prevent The intensity that via 5 is excessively intensive and has influence on copper foil layer itself.

Optionally, it is provided with, along described bending datum line, the crease line 3 being formed by raised, depression or color mark, with Conveniently bent exactly along bending datum line.

In a preferred embodiment of the present utility model, in described FPCB structure, it is provided with one layer of copper foil layer.

In another preferred embodiment of the present utility model, in described FPCB structure, it is provided with two-layer copper foil layer, including position In internal layer Copper Foil 4 and the outer copper foil 7 being located at bending outside of bending inner side, with described bending base on described internal layer Copper Foil 4 The corresponding position of directrix is provided with via 5, and taking speaker field as a example, the FPCB structure of this two-layer copper foil layer is applied to tool There is the speaker module of two loudspeaker monomers.Further, the outer copper foil 7 of described FPCB structure and described bending datum line Via 5 also is provided with corresponding position, this be respectively provided with via 5 on internal layer Copper Foil 4 and outer copper foil 7 and be conducive to more effectively The stress dispersion of concentration is weakened by ground, thus simultaneously working as preventing the effect of internal layer Copper Foil 4 and outer copper foil 7 fracture.This area Technical staff is it should be clear that the basic structure for the FPCB structure with two-layer copper foil layer generally includes base material 6, is located at bending The internal layer Copper Foil 4 of inner side and the outer copper foil 7 being located at bending outside, and cover the coverlay 8 on Copper Foil.

Have influence on the FPCB structure intensity of itself in order to prevent via 5 excessively intensive, positioned at described internal layer Copper Foil 4 and institute The via 5 stated on outer copper foil 7 is preferably crisscross arranged.

In a preferred embodiment of the present utility model, bending segment 2 is provided with location hole 21, and above-mentioned location hole 21 can use In the accuracy of the crooked place of detection bending segment 2, and location hole can be additionally used in FPCB structure positioning in electronic product. Specifically, prepare that be there is and can be matched with the end of bending segment 2 the end point detection position of (for example engaging), and have can be with positioning Hole match (such as insert) bulge-structure cubing, above-mentioned end detecting position can be by matching with the end of bending segment 2 Groove structure realize, above-mentioned bulge-structure may be, for example, PIN needle；When the accuracy needing the crooked place detecting bending segment 2 When, first bending segment 2 is bent along crease line 3, then the end of the bending segment 2 of FPCB structure and location hole 21 are placed on The relevant position of above-mentioned cubing, if the end of bending segment 2 and location hole 21 can successfully with the end point detection position of cubing and convex Play structure to match, then show that the accuracy of the crooked place of bending segment 2 meets the requirements, otherwise undesirable；When need by When FPCB structure is attached in electronic product, location hole 21 also can be matched with e.g. projection etc. the structure in electronic product, More easily FPCB structure to be mounted or located in electronic product.

This utility model additionally provides a kind of speaker module, including module shell and being installed in described module shell Loudspeaker monomer, described speaker module also includes the FPCB structure described in any of the above-described embodiment, and the one of described FPCB structure End electrically connects described loudspeaker monomer, and the other end is used for electrically connecting external circuit.

Although being described in detail to some specific embodiments of the present utility model by example, this area It is to be understood by the skilled artisans that above example is merely to illustrate, rather than in order to limit scope of the present utility model.This Field it is to be understood by the skilled artisans that can be in the case of without departing from scope and spirit of the present utility model, to above example Modify.Scope of the present utility model is defined by the following claims.

Claims

1. a kind of FPCB structure is it is characterised in that include FPCB body (1) and bending segment (2), the described bending segment of definition (2) and There is virtual bending datum line in the crooked place between described FPCB body (1), described bending segment (2) is with described bending benchmark On the basis of line, described FPCB body (1) place plane relatively is bent, with described bending on the copper foil layer of described FPCB structure The corresponding position of datum line is provided with via (5).

2. FPCB structure according to claim 1 is it is characterised in that described via (5) is to be with described bending datum line The axially symmetric structure of axis of symmetry.

3. FPCB structure according to claim 1, described via (5) is waist-shaped hole, rectangular opening or circular hole.

4. FPCB structure according to claim 1 is it is characterised in that copper foil layer width between two neighboring via (5) Width more than or equal to described via (5).

5. FPCB structure according to claim 1 it is characterised in that along described bending datum line be provided with by raised, Depression or the crease line (3) of color mark formation.

6. FPCB structure according to claim 1 is it is characterised in that be provided with one layer of copper foil layer in described FPCB structure.

7. FPCB structure according to claim 1, it is characterised in that being provided with two-layer copper foil layer in described FPCB structure, is wrapped Include the internal layer Copper Foil (4) positioned at bending inner side and the outer copper foil (7) being located at bending outside, described internal layer Copper Foil (4) upper with The corresponding position of described bending datum line is provided with via (5).

8. FPCB structure according to claim 7 it is characterised in that the outer copper foil (7) of described FPCB structure with described Bending datum line also is provided with via (5) on corresponding position.

9. FPCB structure according to claim 8 is it is characterised in that be located at described internal layer Copper Foil (4) and described outer layer copper Via (5) on paper tinsel (7) is crisscross arranged.

10. a kind of speaker module, including module shell and the loudspeaker monomer being installed in described module shell, its feature exists In described speaker module also includes the FPCB structure as described in any one of claim 1-9, one end electricity of described FPCB structure Connect described loudspeaker monomer, the other end is used for electrically connecting external circuit.