CN205451771U

CN205451771U - Optical pickup head's flexible circuit board

Info

Publication number: CN205451771U
Application number: CN201521142649.3U
Authority: CN
Inventors: 王学军; 廖志坚; 林妙南; 钟镇
Original assignee: Dongguan Huaqiang Information Technology Co ltd
Current assignee: Dongguan Huaqiang Information Technology Co ltd
Priority date: 2015-12-30
Filing date: 2015-12-30
Publication date: 2016-08-10
Anticipated expiration: 2025-12-30

Abstract

The utility model relates to an optical pickup head's flexible circuit board, including a plurality of connection electronic component's circuit, the protective layer that lies in circuit Board and a plurality of reserve soldering tin face of printing in the protective layer top, the circuit quantity of being connected electronic component on the quantity of reserve soldering tin face and the flexible circuit board equals, every reserve soldering tin face one -to -one ground sets up on a circuit of connecting electronic component, and this reserve soldering tin face and this line electrically connected. Owing to the reserve soldering tin face that is equipped with that all corresponds on every circuit of connecting electronic component, therefore, when partial the damage appears in the circuit board, instruments such as usable scissors are cut off reserve soldering tin face from about intermediate position, then use in the other flexible circuit board undamaged some more change the partly of damage, instruments such as use flatiron switch on the reserve soldering tin face connection of two parts, thereby need all not change whole circuit board, it repairs to have realized the flexible circuit board replacement, repeated recycling, the cost is lowered.

Description

A kind of flexible PCB of optical pickup head

Technical field

This utility model relates to the accessory of optical pickup head unit, refers specifically to the flexible PCB of a kind of optical pickup head.

Background technology

Optical pickup head unit is to be incorporated in the material pedestals by regulation shape molding such as use resin by several optical elements.On pedestal, it is configured with the actuator that wiring board, adapter and holding object lens move.Optical pickup head unit is that the laser that the light-emitting component being built in pedestal sends focuses on laser disc via object lens, and on laser disc, the laser of reflection is read by photo detector, thus the information on laser disc is read or write.

In optical pickup head, because it is bonding that pH effect has many places to need, each element the most at grade, therefore typically need to use flexible PCB, for loading various electronic component and control circuit, and connect light-emitting component, the actuator keeping object lens to move and photo detector etc..

In existing optical pickup head, flexible PCB typically has two ways, and one is integral type, and another kind is split type.Wherein integral type flexible PCB, is the most such as damaged, and monoblock flexible PCB is scrapped, and cost is high.Split flexible circuit board then needs separate part to be assembled respectively in optical pickup head production process and weld, and spends the time long, and efficiency is low.

Utility model content

The problems referred to above existed for prior art, the purpose of this utility model is to provide the flexible PCB of a kind of optical pickup head.

For achieving the above object; this utility model adopts the following technical scheme that the flexible PCB of a kind of optical pickup head; circuit and the protective layer being positioned at circuit board surface including multiple connecting electronic components, it is characterised in that: also include the multiple standby solder side being printed on above protective layer；The quantity of described standby solder side is equal with the number of, lines of connecting electronic component on flexible PCB；Each standby solder side is arranged on the circuit of a connecting electronic component correspondingly, and this standby solder side is connected with this line electricity.

As optimization, this flexible PCB is integral type structure.

Relative to prior art, this utility model has the advantage that the flexible PCB that this utility model provides, it is provided with a standby solder side due to corresponding on the circuit of each connecting electronic component, therefore, in use when partial destruction occurs in wiring board, standby solder side is cut off by the instruments such as available shears from about middle position, then an intact part in other one piece of flexible PCB is used to replace a part for damage, use the instruments such as flatiron that two-part standby solder side is connected conducting, all change from without by whole circuit board, achieve flexible PCB displacement to repair, repeat recycling, reduce cost.

Accompanying drawing explanation

Fig. 1 is the outside primary structure schematic diagram of the optical pickup head being provided with the flexible PCB that this utility model provides；

Fig. 2 is the internal primary structure schematic diagram of the optical pickup head being provided with the flexible PCB that this utility model provides；

The flexible PCB assembling schematic diagram that Fig. 3 provides for this utility model；

The flexible PCB schematic diagram that Fig. 4 provides for this utility model；

The flexible PCB partial schematic diagram that Fig. 5 provides for this utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is described in further detail.

See Fig. 1, optical pickup head unit 10, mainly by pedestal 12 be assembled in various parts and optical element on this pedestal 12 and form, wherein pedestal 12 two end portions is provided with main shaft part 14 and countershaft portion 16, is used for fixing when optical pickup head unit 10 uses and moves.The above major part of pedestal 12 is covered by lid 11, and lid 11 employs screw 31 and is fixed on pedestal 12.The flexible PCB 29 connecting various electronic components is had below lid 11, the part not covered by lid 11, is that pedestal 12 is mounted with by cradle portion 20, keeps the object lens 26 objective carrier 24 in assigned position, can flexibly support the actuator 18 that several support wires 22 of objective carrier 24 are constituted.

See Fig. 2, in the inside of optical pickup head unit 10, device has the optical elements such as pellicle mirror 32, collimating mirror 38,1/4 wavelength plate 36, reflecting mirror 40, grating 30, and the parts such as light-emitting component 28, grating fixing bracket 21, these optical elements and various part device, after correct position, are fixed in optical pickup head unit 10 by methods such as glue.

Optical pickup head unit 10 is operationally, first from the laser of light-emitting component 28 radiation, by grating 30, it is separated into 0 diffraction light ,+1 diffraction light and-1 diffraction light, after laser penetration grating 30, then by optical elements such as pellicle mirror 32,1/4 wavelength plate 36, collimating mirror 38 and reflecting mirrors 40, laser is changed, then by object lens 26, focusing on laser disc signal recording surface, on laser disc, the laser of reflection is read by photo detector, thus the information on laser disc is read or write.

Seeing Fig. 3 and Fig. 4, flexible PCB 29 is assemblied in pedestal 12 after folding, and this flexible PCB 29 is integral type structure.

Seeing Fig. 5, flexible PCB, it includes the circuit of multiple connecting electronic component and is positioned at the protective layer of circuit board surface, also including the multiple standby solder side 33 being printed on above protective layer；The quantity of standby solder side 33 is equal with the number of, lines of connecting electronic component on flexible PCB；Each standby solder side 33 is arranged on the circuit of a connecting electronic component correspondingly, and this standby solder side is connected with this line electricity.

When being embodied as, seeing Fig. 5, standby solder side 33 is arranged on the circuit connecting light-emitting element part 29a, is additionally arranged on the circuit connecting other elements, and the quantity of standby solder side is equal with the number of, lines of institute's connecting electronic component.

Further, the flexible PCB 29 of optical pickup head, when in use connecting light-emitting element part 29a or connect another part element 29b appearance damage of light-emitting component, standby solder side 33 is cut off by the instruments such as available shears from about middle position, i.e. cut off along line a-a, then use an intact part in other one piece of flexible PCB to replace a part for damage, use the instruments such as flatiron that two-part standby solder side 33 is connected conducting.

It is based on flexible PCB 29 the multiple standby solder side 33 of printing so that flexible PCB 29 can obtain displacement and repair, and repeats recycling, reduces cost.

Finally illustrate is, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical solution of the utility model can be modified or equivalent, without deviating from objective and the scope of technical solutions of the utility model, it all should be contained in the middle of right of the present utility model.

Claims

1. a flexible PCB for optical pickup head, including circuit and the protective layer being positioned at circuit board surface of multiple connecting electronic components, it is characterised in that: also include the multiple standby solder side being printed on above protective layer；

The quantity of described standby solder side is equal with the number of, lines of connecting electronic component on flexible PCB；

Each standby solder side is arranged on the circuit of a connecting electronic component correspondingly, and this standby solder side is connected with this line electricity.

2. the flexible PCB of optical pickup head as claimed in claim 1, it is characterised in that: this flexible PCB is integral type structure.