JP2813736B2 - Disc player - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a disc player.

(Prior Art) In-vehicle CD players need to consider installation space, humidity, vibration, dust, operability, etc. due to special conditions of use in a car. In particular, it is necessary to consider the vibration of the vehicle, and it is required to faithfully reproduce the information from the CD even during traveling.

For this reason, a carriage mechanism including a pickup and a clamp mechanism, which are normally locked to the loading mechanism by the lock mechanism, is unlocked by the lock mechanism when reproducing information from the CD (when clamping the CD). It floats on the loading mechanism via the vibration isolation mechanism.

FIG. 3 shows the lock mechanism for locking the carriage mechanism after the clamp is released.

As shown in the figure, the locking mechanism is provided with a loading arm 2 having an engaging pin 1 and rotatably arranged in the directions of arrows a and b. In the vicinity of the loading arm 2, a switching arm 3 for switching between a locked / free state is arranged via a shaft 4 so as to be rotatable in the directions of arrows c and d. The switching arm 3 is provided with an engagement groove 5, a cam groove 6, and an engagement pin 7, and the engagement pin 1 of the loading arm 2 is engaged with the engagement groove 5.

In the vicinity of the switching arm 3, a lock arm 8 is
Are arranged so as to be freely rotatable in the directions of arrows e and f via. The lock arm 8 includes an engagement pin 10 and an engagement recess 11.
Are provided, and the engagement pin 10 is engaged with the cam groove 6 of the switching arm 3.

In the vicinity of the lock arm 8, a lock lever 12 constantly urged in the direction of arrow g by a spring 13 is disposed so as to be movable in the direction of arrows g and h. The lock lever 12 is provided with an engagement groove 14, guide grooves 15, 15 and a communication hole 16. The engagement groove 14 is engaged with the engagement pin 7 of the switching arm 3, and each guide groove 15 is loaded. It is engaged with a protruding pin of a mechanical chassis (not shown). The communication hole 16 has substantially the same size as a hole (not shown) formed in the loading mechanical chassis, and penetrates a carriage shaft 17 that supports a carriage mechanical chassis (not shown).

To release the lock of the carriage shaft 17 during clamping, first, when the loading arm 2 rotates in the direction of arrow a, the switching arm 3 rotates in the direction of arrow c via the engaging pin 1 or the engaging groove 5. Let it. By this rotation, the cam groove 6 of the switching arm 3 rotates the lock arm 8 in the direction of the arrow e via the engagement pin 10, so that the engagement recess 11 comes off the carriage shaft 17. At this time, the engaging pin 7 of the switching arm 3 moves the lock lever 12 in the direction of the arrow h via the engaging groove 14, whereby the carriage shaft 17 is brought into a free state in the communication hole 16.

On the other hand, when the carriage shaft 17
In the lock, the loading arm 2 rotates in the direction of the arrow b, and each component performs the reverse operation in conjunction with the rotation.

As a result, the carriage mechanism at the time of clamping is in a floating state insulated from external vibration, and the carriage mechanism at the time of releasing the clamp is locked by the lock mechanism.

(Problems to be Solved by the Invention) However, since the above-mentioned conventional locking mechanism mainly includes the loading arm 2, the switching arm 3, the lock arm 8, and the lock lever 12, there is a problem in the following point. .

In other words, the large number of components hinders cost reduction and improvement in dimensional accuracy of each component, and increases loss of interlocking force.

The present invention has been made in view of such circumstances, and has as its object to provide a CD player capable of reducing the number of components.

(Means for Solving the Problems) In order to achieve the above object, a disc player according to the present invention locks the carriage means when the clamp is released, so that the carriage means is locked to the loading means, and In a disc player in which a carriage means is floated on a loading means via an anti-vibration means, the locking means moves in synchronization with a clamping operation of the disc, and operates in conjunction with the loading arm. In addition, a lock member that locks the carriage means when the clamp is released, and a switching member that switches between locking of the lock member and release of the lock operation in conjunction with the operation of the loading arm are provided.

(Operation) In the CD player according to the present invention, a loading arm that rotates in synchronization with a disk clamping operation, a locking member that rotates in conjunction with the loading arm, and locks the carriage means when the clamp is released, Locking or unlocking of the carriage means with respect to the loading means can be performed by a locking means provided with a switching member for switching the locking or unlocking operation of the locking member in conjunction with the rotation of the loading arm.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment in which the present invention is applied to an in-vehicle CD player.

As shown in FIG. 1, the CD player includes a loading mechanism (hereinafter, simply referred to as L mechanism) 100, a carriage mechanism (hereinafter, simply referred to as C mechanism) 200, and an anti-vibration mechanism 3.
00 is provided.

The L mechanism 100 is provided with a chassis 101. A release lever 102 is arranged on the chassis 101 so as to be movable in the depth direction on one side thereof. Release lever 10
An upper end of a restraining lever 103 whose lower end is rotatably attached to the chassis 101 via a shaft 103A is loosely fitted to one end of the second lever. The restricting lever 103 is provided with a projection 103X and a notch 103Y for restricting a vertical movement of a gear shaft described later. Further, the chassis 101 is provided with an arm 105 pivotally mounted on a shaft 105A, and a loading arm 104 that swings in a vertical plane is attached to the arm 105.

Window holes 104A and 104B are formed in the loading arm 104, and a gear shaft to be described later passes through these window holes. At the distal end of the loading arm 104, a stop pin 104X and a connection pin 104Y for restricting the movement of a clamp arm, which will be described later, are protruded. The loading arm 104 has a shaft 10 supporting the shaft 83A of the loading roller 83.
A free arm 106 is mounted via 6A. At the end of the free arm 106, a shaft of a large gear 115, which will be described later, is mounted. The shaft is connected to a window 104B of the loading arm 104.
It is arranged within. When the large gear 115 is retracted from the inscribed gear 122 of the gear arm 120 described later, the free arm
106 rotates clockwise.

A loading motor 110 serving as a power source for loading the disk D is attached to the arm 105. The rotation shaft of the loading motor 110 has a pinion 111
Are mounted, and the pinion 111 meshes with a reduction gear 112 supported by the loading arm 104. The reduction gear 112 is a reduction gear 11 supported by the loading arm 104.
3, the reduction gear 113 meshes with a reduction gear 114 coaxial with the pivot 106A of the free arm 106. The reduction gear 114 meshes with a large gear 115 attached to the tip of the free arm 106. A pinion 116 provided coaxially with the large gear 115 is provided with a recess 12 attached to the mechanical chassis 101 via a screw 121.
3 meshes with the partially inscribed gear 122 of the gear arm 120.

Further, the chassis 101 is provided with a switching arm 130 pivotally mounted on a shaft 131. One end of the switching arm 130 has a U
A groove 132 is formed, and a guide pin 133 protrudes from the other end. One end of a spring 134 is locked on the shaft 131, and the other end of the spring 134 is locked on a connecting pin 104Y protruding from the tip of the loading arm 104.

The guide pin 133 of the switching arm 130 is attached to the chassis 101.
One end of a lock arm 140 that is pivotally attached to a shaft 141 and urged in a counterclockwise direction by a spring 145 is connected. At the other end of the lock arm 140, a hook groove 143 is formed.
To be engaged with the shaft 210.

Further, the chassis 101 is formed with a through hole 150, through which the shaft 21 of the carriage mechanism 200 extends.
0 is exposed, and the hook groove 143 of the lock arm 140 is engaged with this.

The end of the shaft 83A of the loading roller 83 is
It is arranged on the same axis as the shaft 106A of 06, and performs a partial arc motion with the loading arm 104.

The C mechanism 200 supported on the shaft 210 has a support shaft
A chassis 203 having 203a is provided. Chassis 2
03, a clamp arm 202 having a clamper 201
Is pivotally attached to the shaft 204. The clamp arm 202 is urged downward by a coil spring 205 whose end is locked to the chassis 203. At a position facing the clamper 201, a turntable 207 attached to a rotation shaft (not shown) of the spindle motor 206 is arranged. Clamp arm 2
On the pivot side of 02, two stop pins 208 for positioning the disk are arranged downward.

An arm 161 that pivots in the direction of the arrow against the urging force of the spring 102B via a pin 160 that contacts the edge of the disk D is pivotally attached to the chassis 101 by a shaft 162.

At the time of clamping, the chassis 203 is in a floating state by the vibration isolating spring 301 of the vibration isolating mechanism 300 and the damper 303 stored in the holder 302. The damper 303 is filled with silicone oil, and the viscosity of the damper 303 absorbs the vibration of the chassis 203.

Next, the operation of the lock mechanism will be described with reference to FIG.
The locking mechanism among the components shown in FIG. 1 includes a loading arm 104, a switching arm 130, and a locking arm.
It consists of 140. Further, the lock mechanism in the figure shows a locked state of the C mechanism 200 at the time of releasing the clamp.

In this state, the lock groove 143 of the lock arm 140 is engaged with the shaft 210 of the C mechanism 200.
200 movements are regulated. The switching arm 130 is
It is located in the illustrated state by the urging force of the spring 134.

At this time, the pinion 116 is
It is located in the recess 123 deviating from 122. Pinion 116
The axis 106B of the free arm 106, which is coaxial with
, And its movement is restricted. The swing arm 104 includes a shaft 10 which is a swing fulcrum of the arm 105.
It is located at the top of 5A.

When the disk D is set, the loading motor 110 is driven. This driving force is transmitted to the pinion 111, the gears 112, 113, 114, the large gear 115, and the pinion 116.

At this time, the pinion 116 is
Since it is located in the middle, it is idle.

Next, when the disk D is taken in by the loading roller 83 and reaches the clamping position, the edge thereof is
Push 2 in the direction of the arrow. As a result, the arm 161 is
, The release lever 102 is pushed out in the direction of the arrow. When the release lever 102 moves in the direction of the arrow, the restraining lever 103 rotates counterclockwise via the shaft 103A, whereby the shaft 106B engaged with the notch 103Y is released.

At this time, when the free arm 106 slightly rotates clockwise due to friction caused by the clockwise rotation of the gear 114,
The pinion 116 escapes from the concave portion 123 and meshes with the internal gear 122. As a result, the loading arm 104 rotates clockwise. In addition, the rotation of the loading arm 104 causes the stop pin 104X to move downward, and the clamp arm
Release the downward rotation restriction of 202.

As a result, the clamper 201 of the clamp arm 202 moves toward the turntable 206, and presses the center of the disk D against the turntable 206. At this time, the switching arm 130 rotates counterclockwise via the shaft 131 with the rotation of the loading arm 104. The lock arm 140 which engages with the shaft 210 accompanying the rotation of the switching arm 130,
It rotates clockwise via the shaft 141. As a result, when the shaft 210 of the C mechanism 200 is released to be in a free state in the play through hole 152, the C mechanism 200 is brought into a floating state via the vibration isolation mechanism 300.

Subsequently, when the clamp is released, the free arm 106 slightly rotates counterclockwise due to friction caused by the rotation of the gear 114 in the counterclockwise direction, and the pinion 116 meshes with the internal gear 122. Next, when the pinion 116 moves upward along the inscribed gear 122, the above-described components perform reverse movements. When the lock arm 140 rotates counterclockwise, the lock groove 143 engages with the shaft 210 of the C mechanism 200. At this time, the pin 162 of the arm 160 has returned to the rotation area of the disk D.

As described above, in the present embodiment, since the lock mechanism is configured by the three components of the loading arm, the switching arm, and the lock arm, the number of components is reduced as compared with the conventional lock mechanism.

Therefore, by reducing the number of parts, it is possible to reduce costs and improve the dimensional accuracy of each part,
The loss of the interlocking force can be reduced.

Further, since the loss of the interlocking force is reduced, the positional accuracy of the carriage mechanism at the time of loading is improved.
Delivery of the disk from the mechanism to the C mechanism and vice versa can be reliably performed.

In this embodiment, the case where the present invention is applied to an in-vehicle CD player has been described. However, the present invention is not limited to this example, and may be applied to other CD players for home use.

(Effects of the Invention) As described above, according to the disc player of the present invention, the loading arm, the switching member, and the locking means lock or unlock the carriage means with respect to the loading means. Can reduce the number of parts.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a CD player according to the present invention, FIG. 2 is a side view showing a lock mechanism of FIG. 1, and FIG. 3 is a side view showing a conventional lock mechanism. 100 ... Loading mechanism, 101 ... Mechanical chassis, 102
…… Release lever, 102A …… Pin, 103 …… Restriction lever, 1
03Y …… Notch, 104 …… Loading arm, 104X ……
Stop pin, 106: Free arm, 120: Gear arm, 122: Internal gear, 123: Depressed portion, 130: Switching arm, 140: Lock arm, 143: Lock groove, 160:
... arm, 200 ... carriage mechanism, 201 ... clamper, 202 ... clamp arm, 203 ... chassis, 206
… Turntable, 210… shaft.

Claims (1)

(57) [Claims] In a disk player, when a clamp is released, a lock means locks a carriage means so that the carriage means is locked to a loading means, and when clamped, the carriage means is floated on the loading means via an anti-vibration means. A loading arm that moves in synchronization with a clamping operation of the disc, a locking member that operates in conjunction with the loading arm, locks the carriage means when the clamp is released, and an operation of the loading arm. A switching member that switches between locking of the lock member and release of the lock operation in conjunction with the switching member.