JP2814236B2 - Carriage support device for disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]   The present invention is referred to as a video disc or a compact disc.
Disc player that plays audio discs
In the layer, the spindle that drives these disks
Key equipped with a motor, pickup for reading signals, etc.
The carriage support device supports the carriage plate in a vibration-proof manner.
You. [Conventional technology]   Used in conventional support devices for this type of disc player
The dampers to be used are shown in Figs. 27 and 28.
explain.   This damper is a hollow body composed of a housing 101 and a lid 102.
The cavity has a viscosity of silicon or oil.
Sexual fluid 103 is filled.   A part of the housing 101 is depressed in the viscous fluid 103,
A projection 10 projecting from the carriage plate is fitted into the depression 101a.
ing.   This projection 104 is a braking member for stirring the viscous fluid 103.
It acts as.   Further, a gas is sealed in the viscous fluid 103 and rubber or the like is
A variable volume hollow member 105 composed of
The variable volume hollow member 105 is connected to the projection 104 through the depression 101a.
Have been combined.   Then, the outer periphery of the housing portion 101 is mounted in the hole of the holder 106.
Through the damper to the holder 106
Is supported.   This damper has a capacity according to a temperature change of the viscous fluid 103.
The variable volume hollow member 105 expands with the enclosed air, or
Is contracted, so that the projection 104 as a braking member
Attempts to increase or decrease the movement resistance in the viscous fluid 103
It is.   The damper shown in FIG. 28 is an outer cylinder 1 attached to the holder 106.
07 and the inner cylinder 108 attached to the projection 104,
It is connected by a thin curved piece 109.   This damper changes the curvature of the thin curved piece 109
It is intended to attenuate vibration and shock by resistance.
is there. [Problems to be solved by the invention]   In the case of the above-mentioned damper, external shock and vibration
When motion is applied to the holder 106, the magnitude of the impact or
If present, the buffer will
Only the flow resistance of the fluid 103 and the deformation resistance of
You.   Also, the damper of the latter also has a buffer deformation of the thin curved piece 109.
It is only a chemical resistance.   These resistances change depending on the magnitude of the impact and the amplitude.
Nothing.   Therefore, the resistance to absorb the shock or vibration, that is,
As shown in Fig. 29, the damping force is shown on the vertical axis and the amplitude on the horizontal axis.
When taken, it becomes linear.   However, the damping force against shock and vibration with large amplitude
It is desirable to work more strongly than when it is small.
Damper cannot perform such an action
Was. [Object of the invention]   The present invention relates to a conventional disk player supporting device.
Solves the problem described above, and has an amplitude of a certain size or more
When a shock is applied, it is damped against the shock and vibration.
Increase the force ratio and do not transmit the shock or vibration to the carriage plate.
And to prevent damage to the support device.
Aim. [Summary of the Invention]   The present invention provides a carriage plate
And a holder for supporting the carriage plate, and the holder and the carrier.
And an elastic damper interposed between the rigid plates,
The damper is either a carriage plate or a holder
An inner cylindrical part that forms a central hole that connects the
Or an outer cylindrical portion to be coupled to either of the holders,
A connecting portion for connecting the inner cylindrical portion and the outer cylindrical portion, and an inner cylindrical portion
Elastically deformable ring integrally formed in the gap between the outer cylindrical part
And a shock-absorbing projection are integrally formed, and a vibration of a predetermined amount or less is formed.
Motion or impact is absorbed by the curvature of the connection, and
Above vibration or shock, furthermore, bumping protrusion and outer cylinder
That it was absorbed by the collision with the
It is an abstract. (Example of the invention)   An embodiment of the present invention will be described with reference to FIGS.
The disk player will be described.   This multi-disc player is automatically operated as shown in FIG.
Suitable for vehicle loading, trunk A of car A
₁And a player body B mounted thereon.
Then, the magazine C is inserted.   This magazine C has a plurality of disc mounting plates C₁Is axis C_Two
And each disc mounting plate C₁To one
The disk D is mounted on the disk, and the required disk mounting plate C₁Is axis C_Two
By rotating about the required disk D
Is set on the player body B.   The player body B is connected to a car A by a cable E.
Dashboard A_TwoConnected to remote control device F installed in
Have been.   Then, the magazine C is controlled by the remote control device F.
Select the required disk from the multiple disks D,
Transfer this disc D from magazine C to player body B.
And play it back.   Case C of this magazine C_ThreeHas axis C_TwoOne side near
Hole C_ThreeIs drilled and this hole C_ThreeFrom the required disc
Disk mounting plate C on which disk D is mounted₁Press this
And rotate it to Case C as shown in the figure._ThreePush out
Things.   Case C_ThreeHas a recess C to lock it_FourIs set
Have been killed.   Next, the configuration of the player main body B will be described.   1 is a box-shaped frame by attaching the upper plate 1a.
Shafts 1b projecting toward the inner surface on the left and right side walls.
, A vertically long guide hole 1c is formed.   This shaft 1b has horizontal slide plates 2 and 3
Guide holes 2a are inserted, and the slide plates 2 and 3
Can be slid back and forth along the side walls of the.   One slide plate 2 has two step-like cam holes 2b.
However, the other slide plate 3 has one similar cam hole 2b.
The disk mounting plate C of the magazine C₁Same number as
Mark plate 4 in which holes are formed in one horizontal row is provided.
I have.   5 is the upper plate 5a, the left and right attached to the lower plate 5b
Box-shaped magazine when mounted on side plates 5c and 5d
Two holders on the side plate 5c side on the upper plate 5 and two on the side plate 5d side
One pin 5e stands upright in the horizontal direction.   These pins 5e pass through the cam holes 2b of the slide plates 2 and 3.
Then, it is inserted into the guide hole 1c of the frame 1 and the magazine
The rudder 5 does not move in the front-back direction and is supported at three points.
Keeping horizontal.   On the upper surfaces of the slide plates 2 and 3, a rack 2c is engraved.
Gears 6a and 6b connected by one shaft 6
They are engaged with the racks 2c of the slides 2 and 3, respectively.   A motor 7 is mounted on the upper plate 1a, and a plurality of
The speed gear mechanism 8 reduces the rotation speed and transmits it to the gear 6b,
When the gears 6a and 6b rotate, the rack 2c meshing therewith moves forward.
Driven later, the slide plates 2 and 3 have the guide holes 2a
Guided to slide back and forth.   The upper plate 1a has a photo sensor P with a mark plate 4 interposed therebetween.₁
Is installed.   The magazine holder 5 is mounted on the upper plate 5a, the lower plate 5b, and the side plates 5c and 5d.
Therefore, magazine C can be inserted into the enclosure
When the arm 9 is pivotally supported on the upper plate 5a,
Then, a spring 9a is mounted on the arm 9.   Then, the magazine C is inserted into the magazine holder 5.
And the tip of the magazine C hits the bent portion 9b of the arm 9,
Rotate it.   When the arm 9 is rotated in this manner on the upper plate 5a,
Switch SW operated by arm 9₁Installed
I have.   A rotating arm 10 is pivotally supported by the lower plate 5b, and is bent.
The piece 10a projects through the long hole 5f of the lower plate 5b and projects to the upper surface of the lower plate 5b
Then, when the magazine C is inserted, it is pushed and rotated
The arm 10 rotates.   The direction in which the magazine C is pushed back is
The spring 10b is mounted on the gear 10c, and the gear 10c has a resistance tooth.
The car 11 is engaged, and the magazine C is rotated by the bias of the spring 10b.
When pushed out of the magazine holder 5 by the arm 10
At the same time, the resistance gear 11 reduces the speed of the rotating arm 10 and the magazine
Decrease the eject speed of C.   Reference numeral 12 denotes a locking arm that is supported by the side plate 5c.
Has a spring 12a mounted on it and its locking end 12b is
It is urged to protrude into the cylinder 5.   The other end 12c of the locking arm 12 is slid as shown in FIG.
The sliding plate 2 is in contact with the concave portion 2d of the
When the slider slides as shown, the protruding surface other than the concave
And the locking end 12b of the locking arm 12 is in the magazine holder 5.
Withdraw from.   13 is horizontal by a shaft provided on one side wall of the frame 1.
The long guide hole 13a is guided and extends along the side wall of the frame 1.
Is a second slide plate that slides back and forth.   A rack 13b is engraved on the side of the slide plate 13.
And a clamper pivotally supported on the lower surface of the frame 1.
One end of the pressing cam 14 is pivotally connected to the connecting portion 13c,
When the guide plate 13 slides, the clamper pressing cam 14 rotates.
I do.   Further, a motor 15 is mounted on the lower surface of the upper plate 1a,
Worm 15a attached to the rotating shaft of the gear is a several-stage reduction gear
It is in mesh with the mechanism 16.   Reference numeral 17 denotes a magazine C which is rotatably supported on the shaft of the upper plate 1a.
Disc mounting plate C₁The extruding arm that rotates
Coaxially, the inner gear 18a and the outer gear 18b are connected to both sides of the cylindrical annular surface.
The shaft 18c of the double-sided gear 18 formed on the shaft is rotatably supported.
You.   A small gear 19 is rotatably fitted to the shaft portion 18c,
The gear 19 meshes with the internal gear 18a, and the pushing arm 17
The shaft 17a of the small gear 19
A planetary gear 20 that can roll around is supported.   Then, the small gear 19 meshes with the reduction gear mechanism 16, and the motor
The rotation of 15 is transmitted to this, but the rotation of external gear 18b is
When blocked, planetary gear 20 rolls around pinion 19
When the rotation of the pushing arm 17 is stopped, the double-sided gear
18 rotates.   The external gear 18b has a horizontally long guide hole 21a in the axis of the upper plate 1a.
Into the rack 21b of the third slide plate 21 in which
The meshing intermediate gears 22 are meshed.   Also, a long guide hole 23a is inserted into the shaft of the upper plate 1a,
L-shaped guide hole 23b of trainee plate 23 slidable left and right
, The protruding pin 21c of the slide plate 21 is slidably inserted
Have been.   Further, the pushing arm 17 has a disc mounting plate C₁The case
C_ThreeRotating arm 17b pushed out of case C_ThreePush back in
Return arm 17c, a position parallel to the push-back arm 17c and the axis.
A protrusion pin 17d is provided at the position, and the protrusion pin 17d
It is inserted into a guide hole 23c perpendicular to the guide hole 23a.   First, the projecting pin 21c of the slide plate 21 is fitted into the guide hole 23b.
Located at the far end of the portion parallel to the
In the rack 21b,
The rotation of the external gear 18b is prevented via the intermediate gear 22.   At this time, when the motor 15 rotates, the rotation of the pinion 19 causes
As the planetary gear 20 rolls around the pinion 19, the shaft 17
The pushing arm 17 is rotated by a.   Then, while the protruding pin 17d slides in the guide hole 23c,
Then, the setting plate 23 is slid along the guide hole 23a.   When the pushing arm 17 rotates 90 degrees, the
The L-shaped corner of the guide hole 23b is projected by sliding.
To the position of the slider 21c, allowing the slide plate 21 to slide.
I do.   At the same time, the protruding pin 17d reaches the end of the guide hole 23c,
Since rotation of the pushing arm 17 is prevented, rotation of the planetary gear 20 is prevented.
Movement becomes impossible, the internal gear 18a starts to rotate,
Slide the slide plate 21 with the intermediate gear 22 and the rack 21b.
Let me   25 is attached to the upper plate 1a by two suspension arms 24
Carriage plate holder suspended for arc movement
The horizontal plate portion 25a of the holder 25 and the shaft 25b of the horizontal plate portion 25a
, A fixing arm 26 is rotatably supported.   The side of the fixing arm 26 and the horizontal plate portion 24a is
When the slide plate 21 slides as shown in FIG.
And press it, and the fixing arm 26 and
A tension spring 26a is mounted between the holder 25 and the holder 25.
A tension spring 25c is also mounted between the upper plate 1a and the upper plate 1a.   Pins 25d are provided on the left and right sides of the holder 25, respectively.
The sliding holes 27a of the fixing plates 27 and 28 can slide
The fixing plates 27 and 28 are attached to the fixing arm 26.
It is connected to both ends.   Therefore, the fixing arm 26 is pressed by the slide plate 21.
Then, the fixing plates 27 and 28 slide by the guide holes 27a.
You.   The disc D is supported on the left and right inner surfaces of the holder 25.
Support arm 29 is pivotally connected to a shaft 25e.
Supported by a spring 29a wound around a shaft 25d.
The tip 29b of the holding arm 29 is urged to descend.
You.   This support arm 29 is provided with a cam surface 29c,
The protruding pieces 27b of the fixing plates 27, 28 come into contact with this.
When the fixing arm 26 rotates as described above,
b pushes cam surface 29c and raises tip 29b against spring 29a
Let it.   In addition, one fixed plate 28 is fixed to the fixed plate 27 and two fixed
A V-shaped fixing groove 27c is formed.   Further, mounting holes 25 are provided on both sides of the holder 25, respectively.
f is drilled, and the support 31 of the damper 30 is attached to it.
You.   The damper 30 is formed of a viscoelastic material such as rubber, and
It protrudes from the carriage plate 32 to the left and right.
Protruding shaft 32a is inserted into its center hole 30a, and
Prevent the vibration from being transmitted from the holder 25 to the carriage plate 32.
I have.   From the carriage plate 32, one is provided on one side and the other is provided on the other side.
The fixing shaft 32b protrudes, and the fixing shaft 32b is
Insert the hole 25g of the die 25 and project outward, and fix the fixing plates 27 and 28.
Depending on the ride, insert it into the V-shaped fixing groove 27c.
Thus, the carriage plate 32 is fixed to the holder 25.   32c is a spring for suspending the carriage plate 32 from the holder 25.
The weight of the carriage plate 32 and the parts attached to it.
Balance the amount, the weight does not add to the damper 30
As a result, the vibration absorbing ability of the damper 30 is improved.   A spindle motor 33 is mounted on the carriage plate 32.
However, as shown in Fig. 18, this
Is mounted on the carriage plate 32 through the opening 32d.
Insert the carriage plate 32 into the mounting part from the side,
Tighten the screw to the carriage plate 32 from the hole 34a of the table 34
By doing so, it can be attached.   In this way, the spindle table 34 is
Since it can be attached to the pindle motor 33,
Work is easy and the spindle table 34 can be prevented from tilting.
And no mounting parts are required.   Guides the pickup member 36 to the carriage plate 32
Two guide rails 35 are mounted.   This pickup member 36 has a single gas as shown in FIG.
Pickup body that slides by fitting into the id rail 35
37, sandwich the other guide rail 35 from above and below, one side
The slide piece 39 in which the magnet 38 is embedded,
Screw 40 screwed into ride piece 39, when screw 40 is inserted
A connecting piece 42 in which a spring 41 is mounted between the connecting piece 42 and the sliding piece 39
It is constituted by.   One end of the connecting piece 42 is fixed to the pickup body 37
I have.   The magnet 38 has an attractive force on the guide rail 35.
Between the two pieces sandwiching this and the guide rail 35
The play is shifted to one side to prevent the play of the pickup member 36
I do.   Then, depending on the degree of screw 40 tightening, pickup
The level of the main body 37 is adjusted.   The carriage plate 32 has a pickup member as shown in FIG.
Sub-plate with motor 43 that feeds 36 in the tracking direction
44 is attached, and the protruding shaft 32a to one side of the holder 25 is
Two fixing shafts 32b are mounted.   Feeding is performed by bearings 45a and 45b attached to the sub plate 44.
Bearing the screw 46, the pulley 47a of the feed screw 46 and the motor 43
A belt 48 is suspended between the pulley 47b and the rotation of the motor 43.
Inform feed screw 46.   On the other hand, the pickup member 36 meshes with the feed screw 46
Attach rack 49 and pick up according to the rotation of motor 43.
The feed member 36 is sent in the tracking direction.   As described above, by using the sub plate 44,
By reducing the number of holes drilled in the rigid plate 32,
The problem has been solved by increasing the degree of warpage.   A support piece 50 is attached to the carriage plate 32, and a clamper is attached thereto.
The fulcrum 51a of the support plate 51 is pivotally supported by a shaft 50a, and the clamper
How to raise the clamper 52 supported by the tip of the support plate 51
A spring 51b between the clamper support plate 51 and the support piece 50.
Erect.   53 is attached to the frame 1 and spins the clamper 52
A leaf spring that presses toward the dollar table 34, 54 is attached to the upper plate 1a
Kere, Magazine C Case C_ThreeFrom disk mounting plate C₁But
When pushed out, it is a guide body that guides this.   This guide body 54 has a disc mounting plate C₁Who passes
Photo coupler P_TwoIs mounted, and disk D is
The reflected light when passing through confirms the passage
It is. [Operation of Embodiment]   The operation of the player main body B will be described below.   First, each disk mounting plate C of magazine C₁To each
The disc D is placed on the magazine insertion slot of the player body B.
B₁Insert this from   Magazine C inserted in this way is
Into the holder 5, push the bent portion 9b of the arm 9 and turn it.
And magazine C is stored in magazine holder 5 and finished.
Switch SW₁Closes.   Then, the motor 7 rotates and slides by the gears 6a and 6b.
The plates 2 and 3 are moved forward.   The movement causes the other end 12c of the locking arm 12 to
d, the spring 12a pushes the locking arm 12
And its locking end 12b projects into the magazine holder 5.
And the depression C of the magazine C_FourAnd enter Magazine C
And fix it in place.   At the same time, the pin 5e of the magazine holder 5 slides
Pushed by the cam holes 2b of the plates 2 and 3, the end of the cam holes 2b
The magazine holder 5 is in the horizontal position because it reaches the lowermost position.
Descend to the lowest position while maintaining.   This descent occurs when the movement of the slide plate 3 is completed.
H SW_TwoOperates and detects that it has reached the lowest position.
And the motor 7 stops, and the magazine holder 5 is
Will be kept.   Next, the required disc D is played from the remote control device F.
When a command is received, the motor 7 operates the mark plate 4 of the slide plate 3.
The photo sensor P₁The required disk D is loaded while reading
Disc mounting plate C₁But the rotation of the pushing arm 17
Ascends until it matches the height of arm 17a, and detects this
Photo sensor P₁By the command related to
At the same time as stopping, the motor 15 rotates.   At this time, the protruding pin 21c of the slide plate 21 is
The slide is blocked by the guide hole 23b of
Thus, the two-sided gear 18 cannot rotate.   When the rotation of the motor 15 is transmitted to the small gear 19,
Since the face gear 18 cannot rotate, the planetary gear 20
The extrusion arm 17 rotates, and
The moving arm 17b has a hole C on the side of the magazine C._FiveFrom disk loading
Table C₁Press the side of   As a result, the data on which the required disc D is
Disk mounting plate C₁90 degrees while sliding on guide plate 54
Rotate to the case C_ThreeExtruded out.   At this time, the photocoupler P_TwoBy this, disk D
Is checked to see if the disc D is loaded.
When the motor is not mounted, immediately rotate the motor 15 in the reverse direction.
To rotate the pushing arm 17 in the opposite direction.   Then, the push-back arm 17c is moved to the disk mounting plate C.₁The other side
And press this to Case C_TwoAt the same time
Displayed on the remote control device F, indicating that there was no disk D
Inform.   If the disc D passes through the photocoupler P_TwoDetected by
Then, the rotation of the motor 15 continues and the disc mounting plate C₁Is
Pushed up to 90 degrees by the rotating arm 17b.   Thus, when the pushing arm 17 rotates 90 degrees, the projecting pin
17d is prevented from rotating by the guide hole 23c, and the pushing arm
During the rotation of 17, the setting plate 32 is guided by the projecting pin 17 d into the guide hole 23 a.
And the protrusion pin 21c is located at the corner of the guide hole 23b.
Will be done.   This allows the internal gear 18a to rotate.
Then, the rotation is transmitted to the rack 21b, and the slide plate 21
The tip is on the side of the horizontal plate 25a of the holder 25 and the side of the fixing arm 26.
Hit it and press it.   Therefore, the holder 25 rotates the arm 24 to
25 where the holder 25 is stopped by the arm 24
Swing becomes impossible.   Also, the fixing arm 26 is pressed by the tip 21e against the spring 26a.
When rotated, the fixed plates 27 and 28 move, and the V-shaped
The fixing groove 27c separates from the protruding shaft 32b and makes it free.
In, the carriage plate 32 is supported by the spring 32c and the damper 30,
The damper 30 absorbs external vibration.   The completion of the above operation by the slide plate 21 is determined by
Switch SW operated by protrusion 21d of ride board 21_ThreeBy
Is detected.   On the other hand, the Lark 13b of the second slide plate 13 also has the external gear 18b.
When this external gear 18b cannot rotate,
Of the clamper pressing cam 14 connected to the slide plate 13
The push-down cam 14a contacts the clamper support plate 51, and
It is pushing this down.   Therefore, the clamper 52 is separated from the spindle table 34.
Have been.   However, when the external gear 38 rotates, the slide plate 13 also slides.
Ride, rotate the clamper press down cam 14 and press down
The lower part of the cam 14a contacts the clamper support plate 51 and the spring 51b
With the biasing force, the clamper 52 moves toward the spindle table 34
Moving.   At this time, the leaf spring 53 moves the clamper 52 horizontally to the spindle.
Help get closer to table 34.   Before the fixed plates 27, 28 move, the fixed plates 27, 28
The support arm 29 whose tip 29b is lowered by the
The tip 29b is the disk mounting plate C₁Feed by rotation of
In contact with the upper surface of the disc D.   However, as described above, at the same time when the clamper 52 is raised,
The slide of the platen 27, 28 causes the tip 29b of the support arm 29 to move.
Also retracts upward, so that the disc D is clamped by the clamper 52.
And is set on the spindle table 34.   When this operation is completed, switch SW_ThreeInspection by
When notified, the spindle motor 33 rotates and the disk
D and the feed screw 46 is turned by the motor 43.
The pickup member 36 along the guide rail 35
Driving in the tracking direction, playback of the disc D is performed.
You.   When the playback of the disc D ends, or when the remote control device F
A command to stop playback or return disc D to magazine C
When it comes out, the reverse operation is performed and the disc D is
Mounting plate C₁After being placed on the disk loading plate C₁But the case
C_ThreeWill be returned within.   Then, Magazine C descends to the lowest position again and waits
I do.   Next, when there is an eject command for the magazine C, the motor
7, the slide plates 2 and 3 slide in the opposite direction.
And raise the magazine holder 5 to the highest position.
The other end of the locking arm 12 contacts the protruding surface other than the recess 2d,
The locking end 12b is moved outward from the magazine holder 5 against 12a.
Let it retract.   As a result, the locking of the magazine C is released.
Then, the magazine C is pushed by the bent portion 10a of the rotating arm 10,
It is ejected outside the player body B.   The carriage plate 32 is set on the spindle table 34.
The pickup body 37 reads the signal of the disc D
At least within the range of movement of the pickup body 37.
A mouth 32d is provided.   Therefore, each part of the carriage plate 32 or other locations
Oil applied to the body flies and adheres to the pickup body 37
Spindle motor 33, pick-up
The partition wall 61a that supports the wiring to the tap member 36 is erected.
A cover plate 61 is attached to the carriage plate 32. This mosquito
The bar plate 61 serves to increase the strength of the carriage plate 32.
It is. [Structure and operation of damper]   Dump used in the multi-disc player described above.
Details of the damper 30 will be described with reference to FIGS. 21 and 22.   In this damper 30, the projecting shaft 32a of the carriage plate 32 is inserted.
Center hole 30a as inner cylindrical part, and attached to holder 25
The outer cylindrical portion 30b is made of a viscoelastic material such as rubber
Formed in the body, the center hole 30a and the outer cylindrical part 30b are connected
The part to be done is a thin bowl-shaped part 30c as a connecting part
Is formed. Also, the anti-vibration is provided around the center hole 30a.
Cap 30 as a buffer projection with greater elasticity than rubber
d is fitted.   Therefore, the bowl-shaped portion 30c is rich in flexibility and vibrates to the outer cylindrical portion 30b.
The carriage plate 32 is suspended by the spring 32c even when movement or impact is applied.
And the weight is not added to the damper 30.
By the way, it cannot be conveyed by the change in the degree of curvature of the bowl 30c.   The outer periphery of the cap 30d of the damper 30 and the outer cylindrical portion 30b are
Since a gap is formed between them, it is added to the outer cylindrical part 30b.
The amplitude of vibration and impact increases, and the center of the outer cylindrical portion 30b
The center of the central hole 30a is greatly displaced, and the bowl-shaped portion 30c is curved.
Increases, the inner circumference of the outer cylindrical portion 30b contacts the cap 30d.
Will be done.   Since the cap 30d has a large vibration absorbing property, the bowl-shaped portion 3
The damping force of the vibration caused by the 0c curve and the damping force of the cap 30d
Is added.   Therefore, the damping force is plotted on the vertical axis and the stroke is plotted on the horizontal axis.
As shown in the damping force-stroke diagram of FIG.
The damping force after the inner surface of 30b contacts the cap 30d
Will change at a greater rate than before, strong and weak
Acts properly as a damper against sway vibrations and shocks
The Rukoto. Note that, instead of the cap 30d, the center hole 3
Radial through the gap between the outer circumference of 0a and the outer cylindrical part 30b
Several ridges may also be formed.   FIGS. 23 and 24 show a state in which the carriage plate 32 is fitted to the protruding shaft 32a.
A bowl-shaped body 55 having a center hole 55a as an inner cylindrical portion,
3 Several annular protrusions 56a are provided as buffer protrusions as shown in Fig. 3.
Girder ring 56, radiating as bumps as shown in Figure 24
An annular body having annular portions 56d and 57d provided with several ridges 57a
57 pieces.   The outer cylindrical portion 55b of the bowl-shaped body 55 is formed by the outer peripheral portions of the annular bodies 56 and 57.
The outer cylindrical portion 55b is fixed to 56b and 57b by a bowl-shaped portion 55c.
A gap is formed between the ridges 56a and 57b.   56c and 57c are air vent holes, and annular bodies 56 and 57 are
Mounted.   Therefore, the amplitude of vibration or impact increases, and the ridges 56a, 57
aWhen it comes into contact with the inner surface of the outer cylindrical portion 55b,
The deformation resistance of the annular portions 56d and 57d is added to the bending deformation resistance of the
However, when the amplitude further increases, the deformation resistance of the ridges 56a and 57a
The damping of Fig. 26 has the same representation as in Fig. 25.
A force-stroke diagram is obtained. 〔The invention's effect〕   As described above, the present invention has a constant external vibration and shock.
Absorbs shock even if the value is exceeded
Projection collides with, for example, the opposite wall of the holder,
The damping force is strengthened by the elastic deformation of the projection itself.
You.   This increase in damping force is greater than the previous linear increase.
Therefore, the rate of the increase increases, and
It becomes possible to attenuate this even if you take a hit.   Therefore, vibrations and shocks with such large amplitudes are also carried.
Is not transmitted to the plate, so the disk rotating on the carriage
Position of the pickup and the pickup is accurately maintained,
Out of focus, noise, and other playback defects
It can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 26 show an embodiment of the present invention, FIG. 1 and FIG. 2 are perspective views of an exploded state, and FIG. Fig. 4 is a plan view, Fig. 5 is a plan view of the upper plate with most of the plate removed, Fig. 6 is a plan view showing a magazine holder and a carriage plate, and Fig. 7 is a clamper pressing mechanism and a carriage plate. Fig. 8 is a plan view of the holder lock mechanism when the disk pushing arm of Fig. 7 is rotated to the pushed state; Fig. 9 is a plan view of the locked state of the carriage plate holder of Fig. 7; FIG. 10 is a plan view showing a relationship between a magazine and a spindle table, FIG. 11 is a plan view of a state where the disc mounting plate of FIG. 10 is rotated to a play position, FIG. 12 is a plan view of a carriage plate holder, Fig. 13 is a side view of one frame cut off, Fig. 14 is when the magazine holder is lowered FIG. 15 is a side view showing the relationship between the position of the magazine holder and the setting of the disk with respect to the spindle table. FIG. 16 is a side view of the carriage plate holder. FIG. 17 is a disk guide plate and photo. FIG. 18 is a side view of the sensor, FIG. 18 is a perspective view showing a mounting means of the spindle table, FIG. 19 is a front view showing a support state of the pickup member, FIG. 20 is a plan view of the feed screw portion, and FIG. 21 is a carriage plate Sectional view showing the supporting device, FIG. 22 is an enlarged sectional view of the damper, FIG. 23 and FIG. 24 are sectional views each showing another embodiment of the damper, FIG. 25 and FIG. FIG. 23 is a stroke-damping force diagram of the damper, FIG. 27 is a cross-sectional view of the conventional damper, FIG. 28 is a perspective view showing another embodiment of the conventional damper, FIG. FIG. 28 is a damping force-stroke diagram of the damper of FIG. 28. B ... player body, C ... magazine, C ₁ ... disk mounting plate, C ₂ ... shaft, C ₃ ... case, C ₄ recess ..., 1 ...
Frame, 1b ... Shaft, 1c ... Guide hole, 2,3 ... Slide plate, 2a ... Guide hole, 2b ... Cam hole, 2c ... Rack,
2d: recess, 4: mark plate, 5: magazine holder,
5e: Pin, 6: Shaft, 6a, 6b: Gear, 7: Motor, 8: Reduction gear mechanism, 9: Arm, 9a: Spring,
9b ... bending part, 10 ... rotating arm, 10a ... bending part, 10b
... Spring, 10c ... Gear part, 11 ... Resistive gear, 12 ... Locking arm, 12a ... Spring, 12b ... Locking end, 12c ... Other end, 13 ... Slide plate, 13a ... … Guide holes, 13b… Rack, 13c… Connecting part, 14… Champer press down cam, 15…
… Motor, 15a …… worm, 16 …… reduction gear mechanism, 17
…… Extrusion arm, 17a …… Shaft, 17b …… Rotating arm, 17
c: Push-back arm, 17d: Protruding pin, 18: Double-sided gear,
18a: Internal gear, 18b: External gear, 18c: Shaft, 19
…… Small gear, 20 …… Planetary gear, 21 …… Slide plate, 21a
…… Guide hole, 21b …… Rack, 21c …… Protrusion pin, 21d…
... projecting piece, 21e ... tip, 22 ... intermediate gear, 23 ... setting plate, 23a, 23b, 23c ... guide hole, 24 ... hanging arm, 2
5 ... Carriage plate holder, 25a ... Horizontal plate, 25b ...
Shaft, 25c… Spring, 25d, 25e… Shaft, 26… Fixing arm, 26a… Spring, 27, 28… Fixing plate, 27a… Guide hole, 27b… Protrusion, 27c… fixed Groove, 29 ... Support arm,
29a ... spring, 30 ... damper, 30a ... center hole, 31 ... damper support, 32 ... carriage plate, 32a ... protruding shaft, 32b ...
... Fixing shaft, 32c ... Spring, 32d ... Opening, 33 ... Spindle motor, 34 ... Spindle table, 34a ... Hole, 3
5 …… Guide rail, 36 …… Pickup member, 37 ……
Pickup, 38 ... magnet, 39 ... slide piece,
40 screws 41 springs 42 connecting pieces 43 motors 44 sub-plates 45a and 45b bearings 46 feed screws 47a and 47b pulleys 48 … Belt, 49… rack, 50… support piece, 50a… shaft, 51… clamper support plate, 51a… fulcrum, 51b… spring, 52… clamper, 53…
... leaf spring, 54 ...... guide _{body, SW 1, SW 2, SW} 3, SW 4 ...... switch, P ₁ ...... photosensor, P ₂ ...... photocoupler, 30b
…… Outer cylindrical part, 30c …… Bowl-shaped part, 30d …… Protrusion, 55 …… Bowl strip, 55a …… Center hole, 55b …… Outer cylindrical part, 55c …… Bowl strip, 56,57… … Annular body, 56a, 57a …… protrusion, 56b, 57b ……
Outer peripheral portion, 56c, 57c ... air vent hole, 56d, 57d ... annular portion.

   ────────────────────────────────────────────────── ─── Continuation of front page        Panel     Referee Teruo Naito     Judge Eiji Mitomo     Referee Yoshio Imai                (56) References Japanese Utility Model Showa Sho 61-76593 (JP, U)                 Tokiko Sho 43-19967 (JP, B1)

Claims (1)

(57) [Claims] A carriage plate, a holder for supporting the carriage plate, and a damper having elasticity interposed between the holder and the carriage plate, wherein the damper has a center hole for coupling either the carriage plate or the holder. Forming an inner cylindrical portion, an outer cylindrical portion to be connected to the other one of the carriage plate and the holder, a connecting portion to connect the inner cylindrical portion and the outer cylindrical portion, and the inner cylindrical portion and the outer cylindrical portion. An elastically deformable annular buffering protrusion formed in the gap is integrally formed with the elastic member. Vibration or impact of a predetermined amount or less is absorbed by the bending of the connecting portion, and vibration or impact of a predetermined amount or more is Further, the carriage plate supporting device for a disc player is absorbed by a collision between the buffering projection and the outer cylindrical portion.