CN1447327A

CN1447327A - CD driver

Info

Publication number: CN1447327A
Application number: CN 03120896
Authority: CN
Inventors: 弓取裕明; 斉藤明夫; 古谷仁志
Original assignee: Mitsumi Electric Co Ltd
Current assignee: Mitsumi Electric Co Ltd
Priority date: 2002-03-26
Filing date: 2003-03-25
Publication date: 2003-10-08
Anticipated expiration: 2023-03-25
Also published as: CN100481227C; JP2003281876A

Abstract

The present invention provided a disk drive in which a chassis mounted with an optical disk rotation drive mechanism is prevented from interfering and colliding with other components even when impact acts on the drive while the disk tray ejects a disk. This disk drive 1 is provided with a drive main body 2, the disk tray 11 movable between the position for loading an optical disk and the position for ejecting the optical disk, and the chassis 4 mounted with the optical disk rotation drive mechanism 5. The chassis 4 is mounted turnably around the center of a turning end 41 with respect to the drive main body 2 and located at a lower position when the disk tray ejects the optical disk, having an inclined posture. On the bottom surface of the chassis 4, a first stopper 48 located around a displacement end 42 and a second stopper 49 located at the middle part between the turning end 41 and the displacement end 42 are respectively projectedly formed. The first and second stoppers 48 and 49 are allowed to abut on a bottom plate 221 at their lower position.

Description

CD driver device

Technical field

The present invention relates to CD driver device.

Background technology

The CD driver device of CDs such as playback or recording/reproducing CD-ROM, CD-R, DVD is well-known.This CD driver device comprises: the apparatus main body of case shape, with respect to this apparatus main body make CD can the warehouse entry position with go out the CD holder that bin location moves, the screw mechanism unit that in apparatus main body, is provided with.The screw mechanism unit is by the CD rotating drive mechanism that is assembled in the fixing disc on the chassis respectively and makes it to rotate, light picker (optical head) and light picker is constituted along the light picker travel mechanism that moves radially of CD.

The screw mechanism unit is to be the rotary parts that the relative apparatus main body in center is provided with near the end thereafter.CD holder is when delivering from godown, and screw mechanism unit rotational, also relative apparatus main body are inclination attitude (down position), and itself and the CD holder that moves to out bin location are not disturbed, and makes its front side edge decline.

CD holder is under the state of delivering from godown, because when CD driver device falls the impact that waits to the downward acting force (impact) of screw mechanism unit generation, the problem that exists is: the screw mechanism unit that is in down position, its the place ahead one side further descends, not only miscellaneous part damages screw mechanism unit itself because of the damaged that is hit thereby also can impact with the bottom of apparatus main body.In order to prevent this situation, all be limiter of outstanding formation below the front end position on the chassis of screw mechanism unit in the past, when being in down position in the screw mechanism unit, this limiter will touch with the bottom connection of apparatus main body.

But, this existing structure of picture, the decline at the front end position of the screw mechanism unit when having prevented above-mentioned impact, in the more intense occasion of impulsive force, with above-mentioned limiter is the rear one side decline of the screw mechanism unit of fulcrum, produce and disturb, impact being arranged on main circuit board below the screw mechanism unit, the danger of damage main circuit board is arranged.

Summary of the invention

The purpose of this invention is to provide a kind of CD driver device,, can prevent that also the chassis and the miscellaneous part that are provided with the CD rotating drive mechanism from producing interference, impacting even device is produced under the situation of percussive action at the state that delivers from godown of CD holder.

Technical scheme according to following 1-8 of the present invention can realize this purpose.

(1) having the CD driver device be recorded in the informational function on the CD of resetting has: apparatus main body, with respect to the said apparatus main body can make CD the warehouse entry position with go out the CD holder that bin location moves, the chassis that is provided with the rotating drive mechanism that CD is housed and makes it to rotate, it is characterized in that: above-mentioned chassis is being that the center also can be rotated with respect to the setting of said apparatus main body near the one end, down position be in decline when above-mentioned CD holder delivers from godown after rises, is in the lifting position that CD is contained on the above-mentioned rotating drive mechanism when CD become to be rotated; Below above-mentioned chassis, outstanding respectively the 2nd limiter that is positioned near the 1st limiter of the other end and is positioned at the middle part of an end and the other end that forms; Above-mentioned the 1st limiter and above-mentioned the 2nd limiter when being in above-mentioned down position, touching with the bottom connection of said apparatus main body or are close.

(2), in the CD driver device of above-mentioned (1) record, above-mentioned the 2nd limiter is arranged near the centre of the end on above-mentioned chassis and the other end.

(3), above-mentioned (1) or (2) record CD driver device in, a pair of above-mentioned the 1st limiter and the 2nd limiter are set respectively.

(4), in the CD driver device of any one record in above-mentioned (1) to (3),, be provided with the main circuit board of the circuit of the exercises that formed the control CD driver device at the downside on above-mentioned chassis, from an end of the 2nd limiter.

(5), in the CD driver device of any one record in above-mentioned (1) to (4), be provided with rotary, be positioned at the bracket component on the said apparatus main body, make it surround the periphery on above-mentioned chassis; Above-mentioned chassis is supported on the above-mentioned bracket component by elastomeric element.

(6), in the CD driver device of any one record in above-mentioned (1) to (5), the length of above-mentioned the 2nd limiter is longer than the length of above-mentioned the 1st limiter.

(7), in the CD driver device of any one record in above-mentioned (1) to (6), above-mentioned the 1st limiter and/or above-mentioned the 2nd limiter are by adopting ejection formation to form with respect to tabular chassis.

(8), in the CD driver device of above-mentioned (7) record, above-mentioned the 1st limiter and/or above-mentioned the 2nd limiter are made of one with identical parts.

Description of drawings

Fig. 1 is the planimetric map of the embodiment of expression CD driver device of the present invention.

Fig. 2 is that the planimetric map under the top board state of CD driver device shown in Figure 1 is taken off in expression.

Fig. 3 is the cross-section side view (state delivers from godown) of expression CD driver device shown in Figure 1.

Fig. 4 is the cross-section side view (warehouse entry state) of expression CD driver device shown in Figure 1.

Fig. 5 is the planimetric map of the screw mechanism unit of expression optical disc apparatus shown in Figure 1.

Fig. 6 is the planimetric map that the chassis before such as CD rotating drive mechanism, light picker and light picker travel mechanism of screw mechanism unit shown in Figure 5 is installed in expression.

Fig. 7 is the upward view on expression chassis shown in Figure 6.

Fig. 8 is the front elevation on expression chassis shown in Figure 6.

Fig. 9 is the right side view on expression chassis shown in Figure 6.

Embodiment

Below, the most preferred embodiment shown in is described in detail CD driver device of the present invention with reference to the accompanying drawings.

Fig. 1 is the planimetric map of the embodiment of expression CD driver device of the present invention, Fig. 2 is that the planimetric map under the top board state of CD driver device shown in Figure 1 is taken off in expression, Fig. 3 and Fig. 4 are the cross-section side views of representing CD driver device shown in Figure 1 respectively, Fig. 5 is the planimetric map of the screw mechanism unit of expression optical disc apparatus shown in Figure 1, Fig. 6 is the CD rotating drive mechanism that screw mechanism unit shown in Figure 5 is installed in expression, the planimetric map on the chassis before light picker and the light picker travel mechanism etc., Fig. 7 is the upward view on expression chassis shown in Figure 6, Fig. 8 is the front elevation on expression chassis shown in Figure 6, and Fig. 9 is the right side view on expression chassis shown in Figure 6.In addition, below for ease of the explanation, right-hand being referred to as " back " or " rear " with among the top among Fig. 1, Fig. 2 and Fig. 3, Fig. 4 are referred to as " preceding " or " the place ahead " with the left among the below among Fig. 1, Fig. 2 and Fig. 3, Fig. 4.

CD driver device 1 shown in these figure is meant that having the playback music is recorded in the device of the function (perhaps imprinting/playback) of the information on the CD with CD, CD-ROM, CD-R, CD-RW, DVD etc., for example the CD-ROM drive installed of the main body of the such computer installation (not shown) of PC relatively.

To shown in Figure 5, CD driver device 1 possesses as Fig. 1: apparatus main body 2, be used to put into CD (not shown) and with respect to apparatus main body 2 in the mobile CD holder 11 of fore-and-aft direction (horizontal direction) be arranged on the screw mechanism unit (CD driver device parts) 3 of apparatus main body 2.Structure to each several part is illustrated below.

Apparatus main body 2 has the top board 23 on the top of the shell 22 of the bottom of framework 21, cover framework 21 and side and cover framework 21.

CD holder 11 and driving mechanism thereof (not shown), screw mechanism unit 3, main circuit board 12 etc. are installed on framework 21.

Shell 22 usefulness screws and so on are fixed on the framework 21, and the bottom of framework 21 covers with the base plate 221 of shell 22.In addition, top board 23 usefulness screws and so on are fixed on the top of framework 21, form the space of laying CD holder 11 between framework 21 and top board 23.

In addition, framework 21 and CD holder 11 are formed by resin material (plastics) moulding respectively.And shell 22 and top board 23 are to make sheet metal be deformed into the plate-shaped member of definite shape by compression moulding etc. respectively.

On main circuit board 12, in the circuit of the exercises that form control CD driver device 1, various electronic components such as the various integrated packages of the interface plug connector that is connected with the main body of aforementioned calculation machine, microprocessor, storer, motor driver etc. and resistance, electric capacity, switch have also been carried.As Fig. 3 and shown in Figure 4, main circuit board 12 is arranged on the downside of described screw mechanism unit, back 3 (chassis 4).

CD holder 11 comprises the CD holder 111 that slightly is concavity, and CD (not shown) is carried when being placed on the state in this CD holder 111.

CD holder 11 is by being installed in driving mechanism (not shown) driving on the framework 21 and moving (slip) at fore-and-aft direction with respect to apparatus main body 2.That is, CD holder 11 can be with respect to apparatus main body 2, between position (being designated hereinafter simply as " warehouse entry position " or " warehouse entry state ") of placing CD and the position (hereinafter to be referred as " going out bin location " or " state delivers from godown ") that ejects CD, move.CD holder 11 is (state shown in Figure 4) in the warehouse entry position, becomes it and all is contained in state in the apparatus main body, is going out bin location (Fig. 1 is to state shown in Figure 3), for it most withdraws from (give prominence to) state on one side, the place ahead of apparatus main body 2.

To shown in Figure 4,, the bracket component 13 of support helix mechanism unit 3 is set as Fig. 2 in the inside of apparatus main body 2.The frame shape that bracket component 13 is rectangle substantially, portion in its back-end, outstanding respectively its both sides that are formed on of axle 131.Axle 131 can be supported on the bearing portion of shape on framework 21 rotationally.Therefore, bracket component 13 can be a center steering with axle 131 just with respect to apparatus main body 2.

Bracket component 13, driving by not shown driving mechanism is shifted, thereby make it be parastate (with reference to Fig. 4) substantially at warehouse entry state and top board 23 and base plate 221, below its place ahead one side direction of the state of delivering from godown, be shifted, become with respect to top board 23 and base plate 221 inclined (with reference to Fig. 3).

Below the fore-end of bracket component 13, the outstanding limiter (projection) 132 that forms.As shown in Figure 3, when the place ahead of the state bracket component 13 that delivers from godown one side descended, limiter 132 contacted (perhaps approaching) with bottom (base plate 221), further descends from this state to prevent bracket component 13.

Screw mechanism unit 3 is positioned at the inboard of bracket component 13.Screw mechanism unit 3 is supported on (with reference to Fig. 2) on the bracket component 13 by 4 rubber sleeves (elastomeric element) 14 of absorbing vibration.

As shown in Figure 5, screw mechanism unit 3 mainly is made of chassis 4 and the CD rotating drive mechanism 5, light picker (optical head) 6 and the light picker travel mechanism 7 that are disposed on the chassis 4.

CD rotating drive mechanism 5 comprises spindle motor 51 and the epitrochanterian rotating disk 52 that is fixed in this spindle motor 51.CD rotating drive mechanism 5 is put into (carrying) CD exactly and is driven the mechanism that this CD rotates on rotating disk 52.

Light picker 6 possesses: object lens 61, the driver 62 that these object lens are driven along the radial direction (following) of optical axis direction (focusing) and CD, LASER Light Source, light-gathering optics, spectroscope (perhaps semi-transparent border), detection information with and the light receiving element used of focus signal, detection tracking signal and the support component 63 that supports these, to shine the reflected light of the laser of cd-rom recording surface, and import the reception optical element by object lens, spectroscope (perhaps semi-transparent border) and constitute.

Object lens 61 are at the warehouse entry state, and the opening 112 that forms from CD holder 11 is exposed to CD holder 111, and is relative with the record surface of CD.

Support component 63 is made of the metal material of similar die casting manufacturing.The left side of the support component 63 in Fig. 5 has formed a pair of sliding part 64 that is formed by the hole of inserting the logical axis of guide 76.Also have, the right side of support component 63 in Fig. 5 has formed with the axis of guide 77 and has been connected, along the sliding part 65 of these axis of guide 77 slips.

Light picker travel mechanism 7, by the worm screw motor 71 that can just change/reverse, be fixed on this worm screw motor 71 rotation axis on worm screw 72, with the gear wheel in large diameter 73 of these worm screw 72 interlocks, be fixed on the gear wheel in large diameter 73 and the small diameter gear 74 of coaxial rotation, be fixed on the support component 63 and constitute with a pair of axis of guide 76 of the mobile route of rack gear arrangement 75, control and the guide support parts 63 of small diameter gear 74 interlocks and 77.

After worm screw motor 71 was activated, its rotating force passed to worm screw 72, gear wheel in large diameter 73, small diameter gear 74 and rack gear arrangement 75 successively, and support component 63 moves in the moving range of regulation along radially (radial direction) of the axis of

guide

76,77 at CD.At this moment, according to the rotation direction of worm screw motor 71, support component 63 is moving near the direction of the center of rotation of CD or away from the direction of center of rotation.

Rotate with respect to apparatus main body 2 jointly with bracket component 13 on chassis 4 (screw mechanism unit 3).As shown in Figure 3, the axle 131 of this center of rotation is positioned near the rear end (end) on chassis 4.That is, the rear end on chassis 4 be relative to the apparatus main body 2 that becomes center of rotation basically not displacement rotate end 41, the front end on chassis 4 (other end) is to be the displacement end 42 of upper and lower to displacement basically with respect to apparatus main body 2.

According to this structure, chassis 4 (screw mechanism unit 3) the warehouse entry state be positioned at position after displacement end 42 1 sides rise (hereinafter to be referred as " and lifting position) (with reference to Fig. 4); Position (hereinafter to be referred as " down position ") (with reference to Fig. 3) after the state of delivering from godown is positioned at the decline of displacement end 42 1 sides.

Chassis 4 is parastate substantially at lifting position and top board 23 and base plate 221; Inclined with respect to top board 23 and base plate 221 when down position.

When chassis 4 was positioned at lifting position, in CD holder 111, therefore, the CD of putting into apparatus main body 2 was to place (carrying) on rotating disk 52 to rotating disk 52 from opening 112 outstanding (exposing).Under this state, rotary CD folder 15 attraction that are arranged on the rotating disk 52 that are provided with in the inboard of top board 23 are so CD is sandwiched between rotating disk 52 and the CD folder 15 (with reference to Fig. 4).

When chassis 4 is positioned at down position, all there be not to disturb (with reference to Fig. 3) for the part of rotating disk 52 or light picker 6 and the CD holder 11 that moves to out bin location.

To shown in Figure 8, chassis 4 comprises flat chassis main body 43 as Fig. 6.Chassis main body 43 state that is rectangle substantially is made of the metal material of for example stainless steel etc.The adjustment component 81 of the spindle motor fixed part 45 of (installations) the has been set rubber sleeve department of assembly 44 of assembling rubber sleeve 14 and fixed main shaft motor 51, the height of the adjustment axis of guide 77, lay and keep each parts such as hold assembly 91 of worm screw motor 71 on chassis main body 43.

Parts such as these rubber sleeve departments of assembly 44, spindle motor fixed part 45, adjustment component 81, hold assembly 91 constitute by the synthetic resin material, utilize ejection formation (disposable) moulding simultaneously with respect to chassis main body 43.Aforementioned synthetic resin material, there is no particular limitation, such as enumerating polyacetal, poly-terephthalic acids butene esters (PBT resin), polyphenylene sulfid etc.

At this, so-called ejection formation is meant that the substrate with systems such as metallic or synthetic resin is clipped in the metal die of moulding, will be by the method for the disposable setting of disposable injection molding functional part (type) on substrate.

Chassis 4 with respect to cheap and high rigidity, excellent size stability chassis main body 43, each parts for the above-mentioned complicated shape of picture, by utilizing the disposable injection moulding of ejection formation to form, make the speciality of metal material and the synthetic resin material expense of being brought into play and reasonably reduce cost.

Below, will on chassis main body 43, be referred to as the ejection formation parts by the parts with the ejection formation setting.

As shown in Figure 9, like this below chassis 4, the 1st limiter (the 1st projection) the 48 and the 2nd limiter (the 2nd projection) 49 respectively below outstanding formation.The 1st limiter 48 is positioned near the displacement end 42, and the 2nd limiter 49 is positioned at the middle part of rotating end 41 and displacement end 42.The bottom of the 1st limiter 48 and the 2nd limiter 49 is respectively circular.

As shown in Figure 7, the 1st limiter 48 and the 2nd limiter 49 are a pair of parts that are separately positioned on the both sides on chassis 4.

As shown in Figure 3, when chassis 4 is positioned at down position, the 1st limiter 48 and the 2nd limiter 49 contact with the bottom (base plate 221) of apparatus main body 2 respectively (perhaps approaching).

The 2nd limiter 49 probably is positioned at the centre of rotating end 41 and displacement end 42.Main circuit board 12 is arranged in the downside on chassis 4 and holds 41 1 sides (Fig. 3 right side) from the 2nd limiter 49 near rotating.

As shown in Figure 9, the length of the 2nd limiter is longer than the length of the 1st limiter 48.Like this, different according to the length of the 1st limiter 48 and the 2nd limiter 49, when chassis 4 tilts at down position, the 1st limiter 48 and the 2nd limiter 49 just contact with base plate 221 simultaneously (perhaps approaching).

As shown in Figure 8,, form tabular reinforcement 491 in the exterior circumferential of the 2nd limiter 49, therefore, though the 2nd limiter 49 is grown but still is had enough intensity.In illustrated structure, reinforcement 491 is 3 reinforcements that form with respect to one the 2nd limiter 49.

According to this structure, CD driver device 1, the impact force action that is subjected to that CD driver device 1 falls etc. at the state of delivering from godown shown in Figure 3, power below screw mechanism unit 3 (impulsive force) is done the time spent (hereinafter to be referred as " during impact "), because the 1st limiter 48 contacts with base plate 221, just can prevent that the displacement on chassis 4 from holding the decline of 42 1 sides with respect to apparatus main body 2.Therefore, just can prevent from reliably to be shifted the impact of 42 pairs of base plates 221 of end and the interference that causes near each parts 42 pairs at the damage of each parts of screw mechanism unit 3 and the displacement end, impact the damage that these parts are caused.

In addition, during impact,, can prevent the central part on chassis 4 and rotate of the decline of end 41 1 sides with respect to apparatus main body 2 because the 2nd limiter 49 contacts with base plate 221.Like this, just can prevent 4 pairs on chassis with the miscellaneous part headed by the main circuit board 14 produce interference, impact, thereby can prevent from main circuit board 12 is waited the damage of other parts reliably.

In contrast, be different from of the present invention, under the occasion that the 2nd limiter 49 is not set, during impact, because rubber sleeve 14 distortion (bending), the central part on chassis 4 and rotation end 41 1 sides descend with respect to bracket component 13, wait other parts to impact to main circuit board 12, and the danger of these parts of damage is just arranged.

In the present embodiment, the 1st limiter 48 and the 2nd limiter 49 are made of the ejection formation parts.So the 1st limiter 48 and the 2nd limiter 49 need not to spend the preliminary expenses and the manufacturing cost of single manufacturing, in addition, also need not also assemble chassis main body 43.So, can avoid the manufacturing cost of CD driver device 1 to increase.

In addition, the 1st limiter 48 in the left side among Fig. 7 and the 2nd limiter 49, be made of one with identical (one) ejection formation parts, same, the 1st limiter 48 on the right side among Fig. 7 and the 2nd limiter 49 also are made of one with identical (one) ejection formation parts.So the precision that the position is set of the 1st limiter 48 and the 2nd limiter 49 is very high, can guarantee more reliably on the chassis 4 when being in down position with respect to the ground connection property of the base plate 221 of the 1st limiter 48 and the 2nd limiter 49.

In addition, the 1st limiter 48 and the 2nd limiter 49 are because constitute with resin material (the particularly soft resin of using as above-mentioned ejection formation), and impact absorbency is good especially, can protect screw mechanism unit 3 more reliably.

In addition, in the present embodiment, though the situation of using ejection formation to form to the chassis is illustrated, among the present invention, the chassis can adopt any manufacture method to make, and can adopt any structure.In addition, on chassis 4, other limiters except that the 1st limiter 48 and the 2nd limiter 49 can also be set.Bracket component 13 also can not passed through in chassis 4, and is directly supporting rotationally on apparatus main body 2.

More than, with regard to illustrated embodiment CD driver device of the present invention is illustrated, but the present invention is not subjected to these qualification, constitute each parts of CD driver device, can replace with any component parts that can bring into play said function.Also have, also can add any component parts.

In sum, adopt the present invention,, also can prevent to be provided with of interference and the impact of the chassis of CD-ROM drive rotating drive mechanism reliably other parts generation even CD holder produces under the situation of percussive action device at the state of delivering from godown.Thereby, can prevent damage and destruction reliably to relevant miscellaneous part.

Claims

1. CD driver device, function with playback of recorded information on CD, possess: apparatus main body, can and go out the CD holder that moves between bin location in the warehouse entry position of CD with respect to the said apparatus main body, and be provided with the chassis of the rotating drive mechanism that CD is housed and makes it to rotate, it is characterized in that: above-mentioned chassis, being that the relative said apparatus main body of center of rotation can be provided with rotationally near the one end, down position after when the state that delivers from godown of above-mentioned CD holder, being in decline, when the CD limit is rotated, be in the lifting position that rising and near CD are contained in above-mentioned rotating drive mechanism;

Below above-mentioned chassis, be positioned at the 1st limiter of the other end and be positioned at outstanding respectively formation of the 2nd limiter of the middle part of an end and the other end;

Above-mentioned the 1st limiter and the 2nd limiter when being in above-mentioned down position, touching with the bottom connection of said apparatus main body or are close.

2. according to the CD driver device of claim 1 record, it is characterized in that: above-mentioned the 2nd limiter is arranged near the centre of the end on above-mentioned chassis and the other end.

3. according to the CD driver device of claim 1 or 2 records, it is characterized in that: a pair of above-mentioned the 1st limiter and above-mentioned the 2nd limiter are set respectively.

4. according to the CD driver device of any one record in the claim 1 to 3, it is characterized in that: the downside on above-mentioned chassis is distolateral near one from above-mentioned the 2nd limiter, and the main circuit board of the circuit of the exercises that formed the control CD driver device is set.

5. according to the CD driver device of any one record in the claim 1 to 4, it is characterized in that: be provided with the bracket component that is positioned on the said apparatus main body rotationally, make its periphery of surrounding above-mentioned chassis, above-mentioned chassis is supported on the above-mentioned bracket component by elastomeric element.

6. according to the CD driver device of any one record in the claim 1 to 5, it is characterized in that: the length of above-mentioned the 2nd limiter is longer than the length of above-mentioned the 1st limiter.

7. according to the CD driver device of any one record in the claim 1 to 6, it is characterized in that: above-mentioned the 1st limiter and/or above-mentioned the 2nd limiter form with respect to tabular chassis main body by carrying out ejection formation.

8. according to the CD driver device of claim 7 record, it is characterized in that: above-mentioned the 1st limiter and above-mentioned the 2nd limiter are made of one with identical parts.