JPS63206983A - Carriage supporting device for disk player - Google Patents

Abstract

PURPOSE:To avoid the transmission of impacts and vibrations to a carriage plate by forming plural projected streaks having the thickness reduced toward the tip part respectively to a vibration absorbing member attached to the carriage plate or a holder and securing the contacts among those streaks and the cylindrical surface of a contact member attached to the other one of said carriage plate and holder so that the deformation rates of the projected streaks are reduced against a large amplitude. CONSTITUTION:A damper consists of two pieces, i.e., an outer cylinder part 55 attached to a holder 25 and an inner cylinder part 56 having a center hole into which a projected shaft 32a of a carriage plate 32 is put. Several projected streaks 56a, having the thickness reduced toward the tip part respectively are provided radially around the center hole of the part 56. The tip of a projected streak 56 touches the inner circumferential face of the part 55. When the external vibrations or impacts are applied to the holder 25, even the root of each streak 56a is deformed as the amplitude is increased. Thus the attenuating capacity is secured even to the vibrations and impacts of large amplitude and not transmitted directly to the plate 32.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a disc player that plays audio discs called video discs, compact discs, etc. The present invention relates to a carriage support device that supports a carriage plate on which a pickup for reading and the like is mounted in a vibration-proof manner.

[Conventional technology]

A damper used in a conventional disc player support device of this type is shown in FIGS. 26 and 27, and will be described below.

This damper has a hollow body consisting of a housing portion 101 and a lid body 102, and the hollow body is filled with a viscous fluid 103 such as silicone or oil.

A part of the accommodating part 101 is sunken into the viscous fluid 103, and the sunken part 101a has a projection 1 protruding from the carriage plate.
04 is inserted.

This protrusion 104 acts as a braking member for stirring the viscous fluid 103.

Further, a variable volume hollow member 105 made of rubber or the like and filled with gas is provided in the viscous fluid 103, and this variable volume hollow member 105 is connected to the protrusion 104 via a recessed portion 101a.

The outer periphery of the accommodating portion 101 is fitted into the hole of the holder 106, and the carriage plate is supported with respect to the holder 106 via this damper.

In this damper, the variable volume hollow member 105 expands or contracts together with the air enclosed therein according to the temperature change of the viscous fluid 103, so that the protrusion 10 as a braking member is activated.
This is intended to increase or decrease the movement resistance in the viscous fluid 103 of No. 4.

The damper shown in FIG. 27 has a plurality of thin curved pieces 109 connected between an outer cylinder 107 attached to the holder 106 and an inner cylinder 10B attached to the protrusion 104.

This damper attempts to attenuate vibrations and shocks by changing the resistance of the curved thin curved piece 109.

[Problem that the invention seeks to solve]

In the damper as described above, when an external impact or vibration is applied to the holder 106, even if the impact or amplitude varies in magnitude, the damper 17 will be affected by the flow resistance of the viscous fluid 104 against the depressed portion 104. and only the deformation resistance of the accommodating portion 101.

Also, in the latter damper, the only buffering effect is the resistance to change in curvature of the thin curved piece 109.

These resistances do not change depending on the magnitude of impact or amplitude.

Therefore, the resistance or damping force that attempts to absorb the shock or vibration becomes linear when the vertical axis represents the damping force and the horizontal axis represents the amplitude, as shown in FIG.

However, the damping force against shocks and vibrations of large amplitude is stronger than when the amplitude is small (desirably, it acts, but the above-mentioned dampers were not able to exert such an effect).

[Purpose of the invention]

The present invention solves the above-mentioned problems of the conventional disc player support device, and as shocks and vibrations increase,
The purpose is to increase the ratio of damping force to the damping force, to prevent the shock and vibration from being transmitted to the carriage plate, and to prevent damage to the support device.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention forms a plurality of protrusions that become thinner toward the tip on a vibration absorbing member made of a viscoelastic material that is attached to either the carriage plate or the holder. The gist of this is that the damping ratio is increased by bringing the cylindrical surfaces of other contact members into contact with each other and reducing the rate of deformation of the protrusions relative to the amplitude of the swing.

(Embodiment of the Invention) An embodiment of the present invention will be described with respect to a multi-disc player shown in FIG. 1 and the following drawings.

As shown in Fig. 3, this multi-disc player is suitable for being carried in a car.A player body B is mounted in the trunk A of the car, and a magazine C is inserted into the player body B. ing.

In this magazine C, a plurality of disk mounting plates C1 are connected to a shaft C.
2 is rotatably supported, and each disk mounting plate C2 has a 1
The disc D to be loaded is placed on the required disc mounting plate C1.
By rotating around the axis C2, a desired disc D is set in the player body B.

This player body B is connected by a cable E to a remote control device F installed on a dash board A2 of an automobile A.

The remote control device F selects a desired disc from among the plurality of discs D in the magazine C, transfers the disc D from the magazine C to the player body B, and plays it.

A hole C2 is bored in the case C1 of this magazine C on the side near the shaft C2, and from this hole C5, the disk mounting plate CI on which the desired disk D is mounted is pushed. This is rotated and pushed out of the case C8 as shown in the figure.

Further, the case C3 is provided with a recess C4 for locking the case C3.

Next, the configuration of the player body B will be explained.

Reference numeral 1 denotes a frame that becomes box-shaped by attaching the upper plate 1a, and the left and right side walls thereof have shafts 1 that protrude toward the inner surface.
b, and a vertically elongated guide hole IC.

Horizontally long guide holes 2a of slide plates 2.3 are inserted into the shaft 1b on the left and right sides, respectively, and the slide plates 2.3 can slide back and forth along the side walls of the frame 1.

One slide t7Ii2 has two stepped cam holes 2b, and the other slide plate 3 has one similar cam hole 2.
b is formed, and the disk mounting plate C of the magazine C is
A temporary mark 4 is provided in which the same number of holes as 5 are formed in one horizontal row.

Reference numeral 5 designates a magazine holder that becomes box-shaped by attaching the upper plate 5a to the left and right side plates 5c and 5d attached to the lower plate 5b. One pin 5e is horizontally erected on the side.

These pins 5e are connected to the cam holes 2b of the slides 2 and 3.
is inserted into the guide hole IC of the frame 1, and the magazine holder 5 does not move in the front and back direction, and the magazine holder 5 is inserted into the guide hole IC of the frame 1.
It is kept horizontal by point support.

A rack 2C is carved on the upper surface of the slide plates 2 and 3, and gears 5a and 5b are connected by one shaft 6.
are engaged with the racks 2C of the slide plates 2 and 3, respectively.

A motor 7 is attached to the upper plate 1a, and a plurality of reduction gear mechanisms 8 reduce the rotational speed and transmit it to the gear 6b. When the gears 6a and 6b rotate, the rack 2C meshing with the gears moves back and forth. The slide plates 2 and 3 are driven, and the guide hole 2a is guided by the shaft 1b, and the slide plates 2 and 3 slide in the front and rear directions.

Further, on the upper plate 1a, a photo sensor P is mounted with the temporary mark 4 in between.
1 is installed.

The magazine holder 5 includes an upper plate 5a, a lower plate 5b, a side plate 5c,
A magazine C can be inserted into the upper plate 5d, and an arm 9 is pivotally supported on the upper plate 5a, and a spring 9a is mounted on the arm 9.

When the magazine C is inserted into the magazine holder 5, the tip of the magazine C hits the bent portion 9b of the arm 9, causing it to rotate.

On the upper plate 5a, when the arm 9 is rotated in this way,
A switch SW1 operated by arm 9 is attached.

A rotating arm 10 is pivotally supported on the lower plate 5b, and its bent piece 10a passes through the elongated hole 5'' of the lower plate 5b and protrudes from the upper surface of the lower plate 5b, so that when the magazine C is inserted, Pushed by this, the rotating arm 10 rotates.

A spring 10b is mounted on the rotating arm 10 in a direction to push back the magazine C, and a resistance gear 11 is meshed with the gear 10c of the spring 10b. When the magazine C is pushed out from the magazine holder 5 by force, the resistance gear 11 slows down the rotating arm 10 and weakens the ejection speed of the magazine C.

A locking arm 12 is pivotally supported by the side plate 5C, and a spring 12a is mounted on this locking arm so that the locking end 12b thereof is biased to protrude into the magazine holder 5.

The other end 12c of the locking arm 12 is in contact with the recess 2d of the slide plate 2, as shown in FIG. , the locking end 12b of the locking arm 12 is retracted from inside the magazine holder 5.

Reference numeral 13 denotes a second slide plate that slides back and forth along the side wall of the frame 1, with a horizontally long guide hole 13a being guided by a shaft provided on one side wall of the frame 1.

A rack 13b is engraved on the side surface of the slide plate 13, and one end of a clamper press-down cam 14, which is pivotally supported on the lower surface of the frame 1, is pivotally connected to a connecting portion 13c, so that the slide plate 13 can slide. Then, the clamper pressing cam 14 rotates.

Furthermore, a motor 15 is attached to the lower surface of the upper plate 1a,
A worm 15a attached to the rotating shaft meshes with several stages of reduction gear mechanisms 16.

17 is an extrusion arm that is rotatably supported on the upper W and la shafts and rotates the disk mounting plate CI of the magazine C;
Coaxially with this, a shaft portion 18c of a double-sided gear 18 having an internal gear 18a and an external gear 18b formed on both sides of a cylindrical annular surface is rotatably supported.

A small gear 19 is rotatably fitted to this shaft portion 18c,
A 'M star gear 20 that meshes with the small gear 19 and the internal gear 18a and can roll around the small gear 19 in accordance with the rotation of the push arm 17 is supported on the shaft portion 17a of the push arm 17.

The pinion 19 meshes with the reduction gear mechanism 16 and the rotation of the motor 15 is transmitted thereto, but when the rotation of the external gear 18b is blocked, the planetary gear 20 rolls around the pinion 19. , when the push-out arm 17 is prevented from rotating, the double-sided gear 18 rotates.

The external gear 18b meshes with an intermediate gear 22 that meshes with a rack 21b of a third slide plate 21 in which a horizontally elongated guide hole 21a is inserted into the shaft of the upper plate 1a.

Further, an elongated guide hole 23a is inserted into the shaft of the upper plate 1a, and a protruding pin 21C of the slide plate 21 is slidably inserted into an L-shaped guide hole 23b of the regulating plate 23, which is slidable left and right. has been done.

Furthermore, the push-out arm 17 includes a rotating arm 17b that pushes the disk mounting plate C2 out of the case C3, a push-back arm 17c that pushes the disk back into the case C1, and a push-back arm 17c that is parallel to the axis of the push-back arm 17c. A protruding pin 17d is provided, and the protruding pin 17d is inserted into a guide hole 23C of the regulating plate 23, which is perpendicular to the guide hole 23a.

Initially, the projecting pin 21C of the slide plate 21 is inserted into the guide hole 21.
It is located at the far end of the portion parallel to the guide hole 23a of b, and prevents the slide plate 21 from sliding. Therefore, the external gear 18b is prevented from rotating via the rank 21b and the intermediate gear 22.

At this time, when the motor 15 rotates, the rotation of the pinion 19 causes the planetary gear 20 to shift around the pinion 19, so that the push-out arm 17 is rotated by the shaft 17a.

Then, the protruding pin 17d slides the guide hole 23c, and the regulating plate 23 is slid along the guide hole 23a.

Then, when the extrusion arm 17 rotates 90 degrees, the regulating plate 2
3, the L-shaped corner of the guide hole 23b reaches the position of the protruding pin 21c, allowing the slide plate 21 to slide.

At the same time, the projecting pin 17d reaches the end of the guide hole 23c, and the rotation of the push-out arm 17 is blocked, making it impossible for the planetary gear 20 to shift, allowing the internal gear 18a to rotate, and the intermediate gear 22, rack 21b to slide the slide plate 21.

Reference numeral 25 denotes a carriage plate holder which is suspended by two hanging arms 24 so as to be able to move in an arc with respect to the upper plate 1a.
A fixing arm 26 is rotatably supported on the shaft 25b of a.

When the slide plate 21 slides on the side of the fixing arm 26 and the horizontal plate part 24a as described above, the tip 21
A tension spring 26a is installed between the fixing arm 26 and the holder 25, and a tension spring 25c is also installed between the holder 25 and the upper plate 1a.
is mounted.

Pins 25d are erected on the left and right sides of the holder 25, and the slide holes 27a of the fixing plates 27, 28 are slidably inserted into these pins. connected.

Therefore, when the fixing arm 26 is pushed by the slide plate 21, the fixing plates 27 and 28 slide through the guide hole 27a.

On the left and right inner surfaces of the holder 25, one support arm 29 for supporting the disk D is rotatably supported on a shaft 25e, and is supported by a spring 29a wound around the shaft 25d. The tip 29b of the arm 29 is urged downward.

This support arm 29 is provided with a cam surface 29c, and the projecting pieces 27b of the fixing +1i, 27, and 28 come into contact with this, and when the fixing arm 26 rotates as described above, the projecting pieces 27b of the fixing +1i, 27, and Piece 2 ab pushes the cam surface 29C and the tip 2
9b is raised against the spring 29a.

Furthermore, one side of the fixing plate 27 and two horizontal ■-shaped fixing grooves 27c are formed on the fixing plate 28.

Furthermore, mounting holes 2 are provided on both sides of the holder 25.
5f is drilled and the support 3.1 of the damper 30 is attached to this.

The damper 30 is made of a viscoelastic material such as rubber, and exhibits a vibration absorbing effect. A protruding shaft 32a protruding left and right from the carriage plate 32 is inserted into its center hole 30a, and vibrations from the outside are absorbed into the holder. 25 to the carriage plate 32, so this is prevented.

In addition, from the carriage plate 32, there is one wire on one side and two wires on the other side.
A shaft 32b for fixing the book is provided in a protruding manner.
1827c, and the carriage plate 32 is inserted into the holder 2.
It is fixed at 5.

32c is a spring that suspends the carriage plate 32 from the holder 25, balances the weight of the carriage plate 32 and various parts attached to it, prevents the weight from being applied to the damper 30, and reduces the vibration absorption of the damper 30. Improving abilities.

A spindle motor 33 is attached to the carriage plate 32, and as shown in FIG. 18, a spindle table 34 is attached to this in advance. It can be attached by inserting the screw from the side and tightening the screw to the carriage plate 32 through the hole 34a of the spindle table 34.

By doing this, the spindle table 34 can be attached to the spindle motor 33 in advance.
The work is easy, the spindle table 34 can be prevented from tilting, and there is no need to use any mounting parts.

Two guide rails 35 for guiding the big amplifier member 36 are attached to the carriage plate 32.

As shown in FIG. 19, this big amplifier member 36 has a big amplifier main body 37 that fits and slides on one guide rail 35, sandwiching the other guide rail 35 from above and below, and has a magnet 38 on its negative side. The screw 40 is screwed into the slide piece 39, and the connecting piece 42 has a spring 41 mounted between it and the slide piece 39. .

One end of the connecting piece 42 is fixed to the pink-up main body 37.

The magnet 38 attracts the guide rail 35 and the two pieces sandwiching it by its adsorption force to the guide rail 35.
The play in between is shifted to one side to prevent play in the pickup member 36.

The levelness of the pickup main body 37 is determined depending on the degree of tightening of the screw 40.

A sub-plate 44 is attached to the carriage plate 32, as shown in FIG. 20, on which a motor 43 for moving the pink-up member 36 in the tracking direction is attached. A shaft 32b is attached.

The feed screw 46 is supported by shaft bearings 45a and 45b attached to this sub-plate 44, and the pulley 47 of the feed screw 46 is
a, a belt 48 is placed between the motor 43 and the pulley 47b, and the rotation of the motor 43 is transmitted to the feed screw 46;

On the other hand, a ridge 49 that engages with the feed screw 46 is attached to the pink-up member 36, and the pink-up member 36 is sent in the tracking direction as the motor 43 rotates.

In this way, by using the sub-plate 44, the number of holes drilled in the carriage plate 32 can be reduced, and the number of holes drilled in the carriage plate 32 can be reduced.
This increases the strength of the material and eliminates problems such as warpage.

A support piece 50 is attached to the carriage plate 32, and a fulcrum 51a of the clamper support plate 51 is pivotally supported on the support piece 50 by a shaft 50a.
The clamper support plate 51 and the support piece 50
A spring 51b is installed between the two.

53 is a temporary spring attached to the frame l and pushes the clamper 52 toward the spindle table 34; 54 is the upper plate 1;
This is a guide body that is attached to a and guides the disk R placement plate CI when it is pushed out from the case C3 of the magazine C.

A photocoupler P2 is attached to the guide body 54 in the direction in which the disk mounting plate c1 passes, and the passage of the disk D is confirmed by the reflected light when the disk D passes thereover.

[Operation of the embodiment]

The operation of this player body B will be explained next.

First, a disc D is placed on each disc mounting plate C9 of the magazine C, and inserted through the magazine insertion slot B of the player body B.

The magazine C inserted in this way enters the magazine holder 5, presses the bent part 9b of the arm 9 to rotate it, and when the magazine C is completely stored in the magazine holder 5, the switch sw1 is closed. .

Then, the motor 7 rotates and the gears 6a and 6b move the slide plates 2 and 3 forward.

As a result of this movement, the locking arm 12 moves from the other end 12C to the recess 2d, so the locking arm 12 rotates under pressure from the spring 12a, and its locking end 12b protrudes into the magazine holder 5, causing the magazine C into the recess C4 and fix the magazine C in that position.

At the same time, the bin 5c of the magazine holder 5 is pushed by the cam holes 2b of the slide plates 2 and 3 and reaches the end of the cam holes 2b, that is, the lowest position, so the magazine holder 5 remains in the horizontal position and reaches the lowest position. Descend to the lowered position.

When the slide plate 3 is completely moved, the switch SW2 is operated, and when it is detected that the slide plate 3 has reached the lowest position, the motor 7 is stopped and the magazine holder 5 is maintained at that position.

Next, when a command to play the desired disc D is received from the remote control device F, the motor 7 reads the mark plate 4 of the slide plate 3 with the photo sensor P and selects the disc on which the desired disc D is placed. The mounting plate CI rises until it matches the height of the rotating arm 17a of the extrusion arm 17, and in response to a command related to the photosensor P1 that detects this, the motor 7 is stopped and the motor 15 is rotated at the same time.

At this time, since the projecting pin 21c of the slide plate 21 is prevented from sliding by the guide hole 23b of the regulating plate 23, the double-sided gear 18 cannot rotate.

When the rotation of the motor 15 is transmitted to the small gear 19,
Since the double-sided gear 18 cannot rotate, the planetary gear 20 rolls around the small gear 19, so the push-out arm 17 rotates, and the rotating arm 17b is inserted into the hole C3 on the side surface of the magazine C.
Press the side surface of the disk mounting plate C1 from the side.

As a result, the disc mounting plate CI on which the required disc D is mounted slides on the guide plate 54 and
It rotates 0 degrees and is pushed out of the case C3.

At this time, photocoupler P connects disk D to this.
A check is made to see if disc D is loaded.
When no one is placed, the motor 15 is immediately rotated in the opposite direction, and the push-out arm 17 is rotated in the opposite direction.

Then, the push-back arm 17c pushes the disk mounting plate C5 to the opposite side without pushing it back into the case C2, and at the same time displays this on the remote control device F to inform that the disk D is missing.

If the passage of the disk D is detected by the photocoupler P2, the rotation of the motor 15 continues and the disk mounting plate C
1 is pushed out to 90 degrees by the rotating arm 17b.

In this way, when the push-out arm 17 rotates 90 degrees, the protrusion pin 17d is prevented from rotating by the guide hole 23c, and while the push-out arm 17 is rotating, the regulation plate 3 is
2 moves in the direction of the guide hole 23a, and the protruding pin 21C is positioned at the corner of the guide hole 23b.

As a result, the internal gear 18a can rotate, and the rotation is transmitted to the rack 21b, and the slide plate 2
The tip of 1 is the horizontal plate part 25a of the holder 25 and the fixing arm 2
Hit the side of 6 and press it.

Therefore, the holder 25 is at the point where the arm 24 is rotated and the holder 25 is stopped, and the arm 24 is unable to swing the holder 25.

Also, the fixing arm 26 is held at the tip 21e against the spring 26a.
When it is pushed and rotated, the fixing plates 27 and 28 move, and the ■-shaped fixing groove 27c separates from the protruding shaft 32b, making it free, so the carriage plate 32 is supported by the spring 32c and the damper 30. The damper 30 absorbs external vibrations.

The completion of the above operation by the slide plate 21 is completed by the switch S operated by the protrusion 21d of the slide plate 21.
Detected by W.

On the other hand, the rack 13b of the second slide plate 13 is also meshed with the external gear 18b, and when the external gear 18b cannot rotate, the push-down cam 14a of the clamper push-down cam 14 connected to the slide plate 13 It contacts the clamper support plate 51 and pushes it down against the spring 51b.

Therefore, the clamper 52 is separated from the spindle table 34.

However, when the external gear 38 rotates, the slide plate 13 also slides, rotating the clamper push-down cam 14, so that the lower part of the push-down cam 14a contacts the clamper support plate 51.
The clamper 52 moves toward the spindle table 34 by the biasing force of the spring 51b.

At this time, the temporary spring 53 helps the clamper 52 approach the spindle table 34 horizontally.

Before the fixed plates 27 and 28 move, the fixed plates 2
The tip 29b of the support arm 29 whose tip 29b has been lowered by 7.28 is in contact with the upper surface of the disk D fed in by the rotation of the disk mounting plate C1.

However, as described above, at the same time as the clamper 52 rises, the tip 29b of the support arm 29 also retreats upward due to the slide of the fixed plates 27 and 28, so the disk D is pushed up by the clamper 52 and set on the spindle table 34. be done.

When the completion of this operation is detected by the switch SW3 as described above, the spindle motor 33 rotates to drive the disk D, and the motor 43 drives the feed screw 4.
6 and attach the big amplifier member 36 to the guide rail 3.
5 in the tracking direction, and the disc D is played back.

When the playback of the disc D is completed or a command is issued from the remote control device F to stop the playback or return the disc D to the magazine C, the operation opposite to the above is performed and the disc D is placed on the disc mounting plate C9. After that, the disk at plate CI is returned into the case C3.

Then, the magazine C descends again to the lowest position and waits.

Next, when there is an eject command for magazine C, motor 7
By the reverse rotation of , the slide plates 2 and 3 slide in the opposite direction, raising the magazine holder 5 to the highest position, and at the same time, the other end of the locking arm 12 comes into contact with the actual image other than the recess 2d,
The locking end 12b is held against the spring 12a by the magazine holder 5.
pull it outward from the

As a result, magazine C is unlocked, so
The magazine C is pushed by the bent portion lOa of the rotating arm 10,
It is ejected from the player body B.

The carriage plate 32 is provided with an opening 32d at least within the range of movement of the pickup body 37 so that the pickup body 37 can read the signal from the disk D set on the spindle table 34.

Therefore, in order to prevent oil applied to various parts of the carriage plate 32 or other parts from flying off and adhering to the pickup body 37, and to support the wiring to the spindle motor 33 and the pink-up member 36, the partition wall 61a is upright. A provisional cover 61 is attached to the carriage plate 32. This cover vi61 also serves to increase the strength of the carriage plate 32.

[Damper configuration and action]

Damper 30 used in the above multi-disc player
The details will be explained with reference to FIGS. 21 to 23.

This damper 30 has an outer cylindrical portion 5 attached to the holder 25.
5 and an inner cylindrical body 56 having a center hole 30a that is fitted onto the protruding shaft 32a of the carriage Fi32.

Around the center hole 30 of the inner cylindrical body 56, several protruding stripes 56a are provided that are made of actinobacteria and become thinner toward the tip.

The inner peripheral surface of the outer cylindrical body 55 is a cylindrical cavity, and a protrusion 56 is provided in this.
The tips of the two are touching.

The carriage +l 132 is suspended by the spring 32c, and since the spring 32c and its weight are balanced as described above, the load is not applied to the damper 30, that is, the protrusion 56a, so that the protrusion 56a It will not be deformed.

However, when external vibrations and shocks are applied to the holder 25, the protruding ridge 56a deforms as the amplitude of the vibration increases, and the protruding ridge 56a becomes thinner as it reaches its tip. Even the root of 56a is deformed.

Since the protrusion 56a has the above-mentioned shape, its resistance force increases as the swing width increases, and the damping car stroke diagram of FIG. 25 shows the damping force on the vertical axis and the stroke on the horizontal axis. As the amplitude increases, the rate at which the damping force increases increases.

In this manner, the damper 30 has a larger damping force as the strength of the impact or vibration increases, and can appropriately respond to the magnitude of the vibration or impact.

FIG. 24 shows an embodiment of another damper, in which the protrusion 56a is formed into an annular shape that becomes thinner toward the tip, and several of these are stacked in the axial direction, and have the same effect as the damper described previously. produce an effect.

〔Effect of the invention〕

In the present invention, as with ridges, as external vibrations and shocks increase, the deformation given to the protrusions also increases, but since the protrusions become thinner toward the tips, the deformation begins from the tips. , as the width increases, it approaches the base of the protrusion.

Such deformation of the protrusion is not linear with respect to the swing width, and as the swing width becomes thicker (to the extent that the shape ratio becomes smaller).

Therefore, the damping force due to this protrusion forms a curve that becomes steeper as the stroke becomes larger.

For this reason, even if vibrations or shocks of large amplitude that would conventionally be transmitted directly to the carriage plate are maintained, the ability to attenuate them is maintained and the vibrations are not directly transmitted to the carriage plate.

Since the increase in damping force follows a curve as described above, it is also possible to prevent resonance, etc., which is likely to occur near the boundary when the damping force changes suddenly.

Therefore, it is possible to prevent various playback problems such as skipping, defocus, and tracking errors caused by vibrations and shocks being transmitted to the carriage plate during disk playback.

[Brief explanation of the drawing]

Figures 1 to 25 show an embodiment of the present invention, Figures 1 and 2 are perspective views in an exploded state, Figure 3 is an overall perspective view when mounted on a vehicle, and Figure 4. is a plan view, Fig. 5 is a plan view with most of the upper plate cut away, Fig. 6 is a plan view showing the magazine holder and carriage plate, Fig. 7 is a plan view of the clamper pressing mechanism and carriage plate holder locking mechanism, Figure 8 is a plan view of the arm for pushing out the disc in Figure 7 when it has rotated to the extrusion state, Figure 9 is a plan view of the carriage plate holder in the locked state of Figure 7, and Figure 10 is the magazine and spindle. A plan view showing the relationship between the tables, Fig. 11 is a plan view of the disk mounting machine shown in Fig. 10 rotated to the play position, Fig. 12 is a plan view of the carriage temporary holder, and Fig. 13 is a plan view of one side Fig. 14 is a side view showing the main parts when the magazine holder is in its lowest position; Fig. 15 is a side view showing the position of the magazine holder and the relationship of the disk to the spindle table; Fig. 16 Figure 17 is a side view of the carriage temporary holder, Figure 17 is a side view of the disk guide plate and photosensor, Figure 18 is a perspective view showing the mounting means for the spindle table, and Figure 19 is a front view showing the state in which the pickup member is supported. , Fig. 20 is a plan view of the feed screw portion, Fig. 21 is a sectional view showing the carriage plate support device, Fig. 22 is an enlarged sectional view of the damper, and Fig. 23 is an enlarged sectional view in the direction perpendicular to Fig. 22. , Fig. 24 is a sectional view of another embodiment of the damper, Fig. 25 is a damping car stroke diagram of these dampers, Fig. 26 is a sectional view of a conventional damper, and Fig. 27 is a sectional view of other embodiments of the conventional damper. FIG. 28 is a damping car stroke diagram of the damper shown in FIGS. 26 and 27. B...Player body, C...Magazine, C6...
Disk mounting machine, C2...shaft, C3...case, C
4... hollow, 1... frame, 1b... shaft, lc
...Guide hole, 2.3...Slide plate, 2a...
Guide hole, 2b...cam hole, 2C...rack, 2d
... Recessed portion, 4... Mark plate, 5... Magazine holder, 5c... Pin, 6... Shaft, 5a. 6b...Gear, 7...Motor, 8...Reduction gear mechanism, 9...Arm, 9a...Spring, 9b...Bending portion, 10...Rotating arm, 10a. ...Bending part, 10
b...Spring, 10C...Gear portion, 11...Resistance gear, 12...Locking arm, 12a...Spring, 12b
...Locking end, 12c...Other end, 13...Slide plate, 13a...Guide hole, 13b...Rack, 1
3C...Connection part, 14...Clamper push-down cam, 1
5... Motor, 15a... Worm, 16... Reduction gear mechanism, 17... Pushing arm, 17a... Shaft, 17b... Rotating arm, 17c... Pushing back arm, 17d ...Protrusion 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...Protrusion piece, 21e
...Tip, 22...Intermediate tooth BI, 23...Regulation plate, 23a, 23b, 23c--Guide hole, 24...Hanging arm, 25...Carriage plate holder, 25a... horizontal plate part, 25b... shaft, 25c
...Spring, 25d, 25e...Shaft, 26...Fixing arm, 26a...Spring, 27.28...Fixing plate, 27a...Guide hole, 27b...Protrusion piece, 27c
...Fixing 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, 3
2d...Opening, 33...Spindle motor, 34.
...Spindle table, 34a...hole, 35...
Guide rail, 36... Big a knob member, 37.
...Pickup, 38...Magnet, 39...
Slide piece, 40... screw, 41... spring, 42...
...Connection piece, 43...Motor, 44...Sub plate, 4
5a, 45b... Bearing body, 46... Feed screw, 4
7a, 47b...Pulley, 48...Belt, 49.
... Rank, 50 ... Support piece, 50a ... Shaft, 51
... Clamper support plate, 51a... Fulcrum, 51b...
・Spring, 52... Clamper, 53... Leaf spring, 54
...Guide body, 5W,, SWz, SW,, SW,
...Switch, P, ...Photo sensor, P2...
Photocoupler, 55...outer cylindrical body, 56...inner cylindrical body,
56a... Projection. Patent applicant Pioneer Corporation Figure 17 Figure 32c Figure 18 Figure 21 Figure 22! Figure 23 Figure 24 Figure 25 Figure 28

Claims (1)

[Claims] a carriage plate, a holder for supporting the carriage plate, and a vibration absorbing member made of a viscoelastic body, which is attached to any one of the carriage plates and has a plurality of protrusions on the circumferential surface that become thinner toward the tip; 1. A carriage support device for a disc player, comprising: a contact member attached to any one of the above-mentioned members and having a cylindrical surface in contact with a tip of a protrusion of the vibration absorbing member.