CN100367399C

CN100367399C - Anti-static optical disk drive

Info

Publication number: CN100367399C
Application number: CNB2005100036432A
Authority: CN
Inventors: 陈明文; 彭文宽; 简嘉南
Original assignee: Quanta Storage Inc
Current assignee: Quanta Storage Inc
Priority date: 2005-01-10
Filing date: 2005-01-10
Publication date: 2008-02-06
Anticipated expiration: 2025-01-10
Also published as: CN1805045A

Abstract

The present invention relates to an anti-static optical disk player which comprises a casing in which a hollow area is arranged, a tray provided with a rotation motor, a panel adjacent to the front of the tray, a hole for accommodating a sheet withdrawing key, a metal sheet which is arranged on the back of the panel and surrounds the hole and a signal line which is connected with the casing and forms the grounding state with the rotation motor, wherein a base board covers below the rotation motor, is in contact with the rotation motor and can freely come in and go out of the hollow part. The static can be effectively led out no matter the tray comes into the hollow area or shift out of the casing.

Description

CD player with electrostatic defending

Technical field

The present invention relates to a kind of CD player, particularly relate to and have electrostatic protection structure in order to get rid of the CD player of operator's static.

Background technology

CD player in the household electrical appliances information product needs with suitable precise electronic part, reaches the demand of high density memory capacity and high speed transmission of signals.Therefore in using operating process, accurate electronic component very easily is subjected to the destruction of user institute static electrification, needs electrostatic defending badly.As shown in Figure 1, existing CD player 10 mainly comprises the shell 11 and a disk tray 12 of a metal material.Shell 11 has a hollow region can allow pallet 12 insert or pull out.The rotation motor of disc, read head and contain the printed circuit board (PCB) 15 of controlling electronic component and then be configured on the pallet 12, the below is with a metal base plate 121 covering protections.The front end of pallet 12 is established a switch 16, pallet 12 the place aheads are then in abutting connection with a panel 13, an ESC Escape 14 is established in the position of panel 13 relative switches 16, one sheet metal 20 is installed in panel 13 back sides, the movable cable 21 of one U-shaped is located in the space 22 of the below of pallet 12 and shell 11, one end is connected to sheet metal 20, and the other end then is connected to the ground connection of shell 11.

When the ESC Escape 14 of pushing CD player 10 when user's finger 17 moves back sheet, finger 17 with static, the slit 18 via 14 of panel 13 and ESC Escapes is discharged to sheet metal 20, by sheet metal 20 static is led through movable cable 21, borrow the ground connection of shell 11 to get rid of static.To avoid static 19 printed circuit board (PCB) 15 of flowing through, damage electronic component accurate on it, reach the purpose of electrostatic protection.Yet existing CD player additionally is provided with movable cable 21 static such as grade of U-shaped and leads removal apparatus, cost height not only, and during manufacturing expenses and increase volume, movable cable 21 exposes along with pallet 12 turnover shells 11 and more causes inconvenient operation simultaneously.

Though another existing CD player is provided with contact point at sheet metal, and between sheet metal and panel elastic sheet rubber is set, with after suppressing contact point and making pallet enter shell, directly contacts shell and get rid of static, so that deletion activity cable.But this existing CD player only at pallet when entering shell, just led destaticing.Yet shift out from shell at pallet, and make rotation motor, the read head of disc and contain the printed circuit board (PCB) of controlling electronic component when directly exposing to the open air outside, static can't be led on the contrary and be removed, will be caused precise electronic part sensitive for damages, be reduced the quality of CD player.

Summary of the invention

The object of the present invention is to provide a kind of CD player, utilize the original disc rotation motor of CD player, base plate and signal wire, directly lead destaticing, with simplified construction and reduce cost with electrostatic defending.

Another purpose of the present invention is to provide a kind of CD player with electrostatic defending, when pallet no matter when entering or shifting out the hollow region of housing, the static on the pallet all is able to be led effectively remove.

For reaching above-mentioned purpose, the present invention proposes a kind of CD player with electrostatic defending, comprise: an inside has a hollow region housing, one pallet is provided with a rotation motor, and the below covers a metal bottom and is electrically connected with rotation motor and can freely passes in and out hollow region, and a panel is adjacent to pallet the place ahead, be provided with a hole and move back the sheet key with ccontaining one, one sheet metal is located at back side of panel and around hole, is contacted with base plate, and a signal wire connects housing and rotation motor forms ground connection;

Wherein the rear end of this housing hollow region is provided with a printed circuit board (PCB) and frame ground, this signal wire one end connects printed circuit board (PCB), this pallet downside is established and is contained the control circuit board of controlling electronic component, and this rotation motor is connected with the signal wire other end via control circuit board.

The present invention has the CD player of electrostatic defending, makes sheet metal, base plate, rotation motor, the signal wire ground loop to housing, keeps not interrupting.Not only make pallet enter housing operation when moving back the sheet key, can static be got rid of in good time, also can be when pallet shift out housing, in time the user is touched the place and produce electrostatic induced current and lead and remove.Make static unlikely, avoid damaging electronic component accurate on it, make CD player obtain complete electrostatic protection through control circuit board.And utilize the original member of CD player to form ground loop, simplified construction and reducing cost.

Description of drawings

Fig. 1 is the sectional view of existing electrostatic protection device of CD;

Fig. 2 has the stereographic map of electrostatic defending CD player for the present invention;

Fig. 3 has the top view of electrostatic defending CD player for the present invention;

Fig. 4 has the upward view of electrostatic defending CD player for the present invention.

Embodiment

Relevant the present invention is for reaching above-mentioned purpose, and technological means that is adopted and complementary work thereof are imitated, and lift preferred embodiment now, and cooperate graphic be illustrated as follows.

Please refer to Fig. 2, the CD player 30 that the present invention has electrostatic defending mainly comprises a pallet 31, a housing 32, a panel 33 and a base plate 34.This pallet 31, preceding master establishes panel 33, and the below then covers base plate 34, and housing 32 has a hollow area, can allow the pallet 31 of carrying disc freely pass in and out, to change disc.

Wherein, establish the rotation motor 311 of rotation disc and the read head 312 of read-write disc data on the pallet 31, contain the control circuit board 313 of controlling electronic component and then be located at the downside of pallet 31, control circuit board 313 is provided with perforation 314 in the position of relative rotation motor 311 part rear ends (for example bearing).The below of control circuit board 313 is covered with metal bottom 34 again, and base plate 34 also is convexly equipped with contact site 341 in the relative position of rotation motor 311 part rear ends (for example bearing), and base plate 34 has than control circuit board 313 large tracts of land more.In addition, pallet 31 the place aheads are in abutting connection with a panel 33, and panel 33 is provided with hole 331, is convexly set in panel 33 fronts in order to the ccontaining sheet key 332 that moves back, the position that sheet key 332 is moved back at the back side of panel 33 relatively is provided with a sheet metal 35, and sheet metal 35 relative holes 331 also are provided with perforation 351.Though the present invention forms individual part with sheet metal 35, sheet metal 35 also can be directly be bent to form by the leading edge extension of base plate 34, with simplified structure.

As shown in Figures 3 and 4, CD player 30 of the present invention will be moved back the hole 331 that sheet key 332 is placed in panel 33, and pass the perforation 351 of being located at panel 33 back metal sheets 35, make sheet metal 35 closely around moving back sheet key 332, again panel 33 is connected at pallet 31 the place aheads, allows move back and move back sheet mechanism on the sheet key 332 contact pallets 31.In addition, establish rotation motor 311 and read head 312 on the pallet 31,313 of one control circuit boards are fixed on pallet 31 downsides, the perforation 314 of control circuit board can be exposed so that fixing ccontaining rotation motor 311 part rear ends (for example bearing), fixedly cover the downside of pallet 31 at last with base plate 34, control circuit board 313 is coated on 34 of pallet 31 and base plates, and make the rear end of the contact site 341 contact rotation motors 311 of base plate 34, do not influencing under rotation motor 311 normal rotation, produce and be electrically connected, base plate 34 control circuit boards 313 extend to cover to the front end of pallet 31 and are subjected to electromagnetic interference (EMI) with the control electronic component that prevents control circuit board 313, and allow the leading edge contact metal film 35 and forming of base plate 34 be electrically connected.

In addition, the rear end of housing 32 interior hollow region is provided with a printed circuit board (PCB) 36, one signal wire, 37 1 ends connect printed circuit board (PCB) 36, the other end then connects the control circuit board 313 of pallet 31 belows, signal wire 37 is the electric energy of supply tray 31 upper members and the control signal of main frame not only, and the data-signal that makes control circuit board 313 detect or produce transfers to printed circuit board (PCB) 36 by signal wire 37, converts proper signal to for the main frame arithmetic operation.Signal wire 37 is provided at printed circuit board (PCB) 36 ends and housing 32 suitable ground connection simultaneously in transmission, run well with protection rotation motor 311.

The present invention has the CD player 30 of electrostatic defending, move back sheet key 332 when moving back sheet when pushing, the user with static can be via finger, discharge is passed panel 33 and is moved back sheet key 332 gaps, received by being located at the sheet metal 35 that panel 33 back sides and next-door neighbour move back sheet key 332, conduct to the base plate 34 that is electrically connected with it again, be electrically connected the rear end of rotation motor 311 by the contact site 341 of base plate 34, be conducted into rotation motor 311, again through signal wire 37 ground loops, transfer to printed circuit board (PCB) 36, by the ground connection of housing 32, to get rid of this static.Make the discharge of static unlikely, avoid damaging accurate electronic component, to improve the quality of product through control circuit board 313.

Because CD player 30 of the present invention is utilized original members such as sheet metal 35, base plate 34, rotation motor 311, signal wire 37 and printed circuit board (PCB) 36 of CD player, make base plate 34 suitably contact to form and be electrically connected, constitute ground loop in order to get rid of static with rotation motor 311.Therefore needn't set up movable cable or other member of conduction, can simplify the CD player structure and reduce cost.Simultaneously, because CD player 30 of the present invention is in order to the signal wire 37 of conduction electrostatic grounding, no matter pallet 31 enters or when shifting out housing 32, all the time the ground connection that connects rotation motor 311 and printed circuit board (PCB) 36, make sheet metal 35, base plate 34, contact site 341, rotation motor 311, through signal wire 37, printed circuit board (PCB) 36 ground connection to housing 32, control circuit board 313 keeps not interrupt circuitry, to get rid of static.Make the discharge of static unlikely, avoid damaging accurate electronic component, to improve the quality of product through control circuit board 313.Therefore not only enter housing 32 operations when moving back sheet key 332 at pallet 31; can static be got rid of in good time; also can be when pallet 31 shift out housing 32, in time user touch place (comprise move back sheet key 332 or the base plate 34) electrostatic induced current that produces is led and removed, make CD player obtain complete electrostatic protection.

Above-described content only is that scope of the present invention is not limited to this each preferred embodiment, and is all according to any change that the present invention did, and not breaking away under the spirit of the present invention, all belongs to the scope of claim of the present invention in order to convenient explanation preferred embodiment of the present invention.

Claims

1. CD player with electrostatic defending comprises:

One housing, inside have a hollow region;

One pallet is provided with a rotation motor, and the below covers a metal bottom and is electrically connected with rotation motor, can freely pass in and out this hollow area;

One panel is adjacent to this pallet the place ahead, is provided with a hole and moves back the sheet key with ccontaining one;

One sheet metal is located at this back side of panel and is centered on this hole, contacts with base plate; And

One signal wire connects this housing and rotation motor and forms ground connection;

2. according to the described CD player with electrostatic defending of claim 1, wherein this control circuit board is between base plate and pallet, and control circuit board is provided with fixedly rotation motor of perforation, and base plate extends a contact site and is electrically connected rotation motor.

3. according to the described CD player with electrostatic defending of claim 1, wherein this sheet metal is bent to form by direct extension of base plate.