JPS5857665A - Reproducer of recording disk - Google Patents

Abstract

PURPOSE:To maintain the dimension of the titled device high precision by transmitting disconnectable driving force from a mobile body driver to a hooking/shifting mechanism and at the same time shifting a recording disk up to the 1st position with the force of an energizing matter when the driving force is cut off. CONSTITUTION:When a power supply is on, a driving pin is sucked with a compression spring pressed. Thus the driving pin is apart from a contact part, and a pinion gear is actuated upward by the function of a tension spring 53 to match with a rack gear 14c of a rack plate 14. At the same time, a mobile body 9 presses the compression spring 54 at its waiting position. The driving pin is positioned so as to touch the contact part of a housing when necessary. Then the load is selected for the springs 53 and 54 so that the moment around the pin due to the spring 53 is larger than that of the pin 54.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a base device for a recording disk, and particularly to a mechanism for mounting a recording disk to the device.

This type of recording disk is stored in a cartridge because its playback ability decreases when touched by hand.The cartridge containing this recording disk is inserted into the playback device,
I was stuck in the extraction operation, and the recording disk was transferred to the playback device t (
A method is used in which it remains inside. At the second position, which is the insertion position of the L recording disk, -1=
The recording disc is supported near the center. However, this type of recording disk (1) is made of a flexible material whose main component is vinyl chloride, and it cannot be stored under stress for a long time, especially at high temperatures of 40°C or higher (when stored). There is a risk of permanent deformation.And this kind of recording disk (1
) has a limitation that unless the surface precision is several hundred microns or less, the signal detector (1t1) will not respond and a sufficient reproduction signal will not be obtained. In order to avoid problems caused by
After inserting the recording disk (1) using a drive means such as an electric motor, ■ [immediately perform an electric sequence to move it from the second position to the first position, or use a timer to move it to the second position after a few minutes have passed.
The idea was to move it from the first position to the first position.

However, since an electric motor or the like is used to move the recording disk from the second position to the first position, when the recording disk is in the second position and the power supply circuit is interrupted due to a power outage, the recording disk may not be in the first position for a long time. 2 position, and there was a risk that the reproduction signal would be adversely affected by deformation of the recording disk or the like.

This invention was made in order to eliminate the above-mentioned disadvantages of the conventional device, and the driving force is transmitted from the movable body drive device to the engagement movement mechanism in a manner that can be interrupted, and when the driving force is interrupted, the recording disk is moved by the urging force of the urging body. It is an object of the present invention to provide a recording disk reproducing device that does not cause problems such as a decrease in the surface precision of the recording disk even if the power is cut off by moving the recording disk to the first position.

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) is a recording disk, (2) is a cartridge that accommodates this recording disk (1), (3) is a cartridge half that is fitted into the opening (2a) of this cartridge (2), and (8a) is a cartridge half that fits into the opening (2a) of this cartridge (2). ) is this cartridge half (3)
does not come out from the cartridge (2) J: Lock part that acts on the sea urchin, (81)) is the above-mentioned car 1-ridge half (3)
The hook that is engaged when the remains inside the playback device is the part, (4)
is a cartridge guide device that translates together with the cartridge (2) when inserting the car 1 to the cartridge (2) into the playback device side, (4a) is the right slider, (4b) is the left slider, (4c) is the upper beam, (4d) is the lower beam. (
5) is the right guide, and (6) is the left guide. Although not shown, when inserting the cartridge (2) into the playback device Mj, due to the difference in unevenness provided on the right guide (5) and the left guide (6),
-1- Beam (4c) and lower beam (4d) are opened, and by the action of claws (not shown) attached to these, the sea urchin cartridge (2) is opened (not shown in Figure 2). l,
II-11 people were appointed in the same situation.

Next, in FIG. 8, (7) is the chassis, (7a)
(81 is the guide rod fixed to the chassis protrusion (7b) (7c), (81 is the guide rod fixed to the chassis protrusion (7b) (7c),
Reference numeral 9) denotes a moving body on which a signal detector q1 is mounted, and a bearing portion (9a) forming a part of this moving body (9) is slidably supported by the guide rod (8). (1υ) is a roller pivotally supported by the moving body (9), and is rotatable on the guide rod (2) fixed to the chassis protrusion (7d) (7e). a moving body driving device that moves the moving body (9) along the guide rod (8);
a< is a rack plate attached to the side surface (9b) of the movable body (9), a-th is a rotating rod pivotally supported by the bracket 000η081, and (II is an arm A1 fixed to this rotating rod). ) is a roller pivotally supported by this arm A, and in FIG. 3, this roller (4) is in contact with the lower parallel part (14a) of the rank plate 0. eυ is the rotation rod OFj An arm B is fixed to the arm B, and a tension spring (a) is applied between this arm 13@])l and the protrusion (7f) of the chassis (7). A is a link or a plate fixed to the rotating rod 01, and transmits the driving force of the lower finger (A) which is a part of the clamper device (C) of the recording disk (1). (E) is a rotating pipe pivotally supported by the rotating rod OQ, (C) is the arm C1 fixed to this rotating pipe (4) (C) is a rotating plate, and (A) is the rotating plate mentioned above. Arm C@ and rotating plate (4
) is pivotally supported by the link plate, (to) the chassis protrusion (
7g) and the rotation lever (to). cIIJ, CV5 is the above rotating pipe (7)
This arm (2) is fixed to the lift plate (I) and is raised and lowered by the operation of the pantograph mechanism (which engages the bone and is connected to the rotating pipe).

□□□ is the arm I fixed to the above rotating rod Qfj)
and is located at a position where it comes into contact with the upper part of the arm (2) when necessary. (The bone is the contact surface of the lift plate C→ (84)
a) is an elevating body supported by its own weight, and this elevating body +Ii
The recording disk (1) is supported on the second surface (86a) of No.3. (B) is a motor that is attached to the chassis (7) and rotates the turntable (C), (88a) is the outer peripheral surface of this turntable (7), and (to) is the shaft (117a) of the motor ζ-cut. ) is slid on the recording disc (
1) is the centering tool.

Figure 4 shows the moving body drive device Ktogo, which includes a mounting plate (11) attached to the chassis (7).
) is this installation play) The bottle (40
a) is a housing pivotally supported, (6) is a mounting plate attached to the chassis (force), (42a) is a bottle erected thereon, and the bottle (42a) is provided on the housing (11); It is engaged with the large length (41a),
The housing 01) is rotatable around the pin (40a) f.

(41b) is a pin that is set upright in the housing 0υ, and the wheel gear 0 east and the binion gear 0 (4) are fixed coaxially to each other and are pivotally supported by the pin (41b). (c) is a bracket attached to the housing θη, (to) is a pin pivotally supported by this, and the worm θ and the pulley (c) are fixed to this pin (c). θ is the motor attached to the housing θ℃, and this output shaft (
A belt 151) is hung between the pulley fixed to the pulley (not shown) and the pulley 0. The older sister is an excitation adsorption type solenoid fixed to the above mounting plate □□□,
(52a) is a drive bin, (52b) is a stopper, (
52c) is a compression spring, and the drive pin (52a) is in a positional relationship such that it comes into contact with the contact portion (41c) of the housing 0υ when necessary. The pin (421) set up on the mounting plate (6)) and the end of the housing 0υ (
41d), so that the moment around the pin (40a) caused by the compression spring (52c) is greater than the moment around the pin (40a) caused by this tension spring 3). The tension spring - also shown in Fig. 8 - is fitted into the guide rod (8) and abuts against the chassis projection (713) and the bearing part (9a) of the moving body (9), thereby causing the movement! This is a compression spring that biases the Irb base in the right direction in the figure.

Next, the operation will be explained. FIG. 8 shows the shape 111ρ of 111 in which the cartridge (2) containing the recording disc (1) in FIG. 1 is inserted into the playback device, and the rotating rod 09 is Torque is applied in the clockwise direction, and the roller α is in contact with the rack plate (single IZ part, flat plate part 0). A torque is applied to Jj, and this action causes the rotating pipe ψ9 to rotate by 1"J' ff
The lift plate CCa is actuated in the i'1 direction, that is, in the upward direction, and the elevating body Gf9 supported by the lift plate 1- It has become.

In this position, the cartridge (2) containing the recording disc (1) is inserted into the insertion slot (7a) of the chassis (7).
inserted from. At this time, the opening (2a) is opened by the action of the cartridge guide device (4).
is inserted in an enlarged state, and at an intermediate position, the cartridge guide device (4) engages with the tilt ff1 (28a) of the rotating plate (c) to lift and lower the lift plate (2) supported by the lift plate (2). The body q bone descends, and the above-mentioned insertion operation continues without interference between the cartridge (2) and the elevating body ζ bone. Cartridge (2) is a clamp device (goods)
When it reaches the recording disk (1) and cartridge half (3)
is held in a clamping device, and the empty cartridge is extracted from the reproducing device. In the middle of this extraction,
Due to the engagement between the cartridge guide device (4) and the inclined portion (28a) of the rotating plate (c), the elevating body (c) rises,
Supports the recording disk (1).

Next, in response to the regeneration operation instruction signal, the moving body driving device α field moves to the right in the figure 1. At this time, the tension spring (A)
By overcoming the tension splash (illusion), the roller (A) moves towards the rack plate (+41 inclined part (14
b), the rotating rod aq rotates clockwise, the elevating body (7) and the recording disk (1) supported by it descend, and this recording disk (1) is moved to the turntable □□□ When the recording disk (1) is placed in the playback device if< fIi by contacting the outer peripheral rib surface (87a) of the recording disk (1), that is, reaching the first position,
1 is completed, and the moving body (9) is moved to the recording disk (by the operation of 11).
Move to the playback position of 1) and start playback operation.

The above explanation of the operation is an explanation of normal normal operation, but
” - In the explanation, the transfer 1liQ body 11 device (in the state before the If operates, that is, 11self ε1 is a disk (1)
It is not supported by the elevating body jM9 and is held in the second position.
Fig. 4 shows the state when the power is on, and the solenoid force is an excitation attraction type and is connected to the source part of ↑1. Therefore, when the power is turned on, the drive pin (421) is attracted and the compression spring (52c) is pressurized.This drive pin (42b) and the contact part (41c) are separated from each other. Due to the action of the cage tension spring, the pinion gear (1:I is 1
It is hinged with the rack tooth (14c) of the rack plate 0, which was made as an accessory.

Furthermore, the moving body (9) is suppressing the compression spring in the standby position shown in FIG. In this state, when the power is cut off, the solenoid has no suction force, and the contact portion (41c) is pressed downward by the compression spring (52c). At this time, if the torque due to the compression spring (52c) is set to be larger than the torque around the bottle (40a) due to the tension spring, the compression spring (52c)
Due to the action of , the housing 0υ rotates clockwise around the bin (40a), and the binion gear rotates around the rack tM (
It can be solved from 14c). At this time, the movable body (9) moves to the right in Fig. 8 due to the suppressing action of the compression spring, and is supported by the elevating body (■) due to the engagement of the rack plate 0 fathom and the rotating rod QFj. The recorded recording disk (1) descends and reaches the first position.

In the above embodiment, the compression spring applied a biasing force to the moving body (9) in the right direction in the figure, but this compression spring was removed and the lower parallel portion of the rack plate Q41 (
If t4a) is eliminated, the inclined part (tab) is extended, and the moving body (9) is placed in a standby position with the roller (a) in contact with the inclined part (14b) midway, the rotating rod α
A clockwise torque is applied to υ by the action of the tension spring (a), and the component of this torque in the moving direction of the movable body (9) can also be used as an urging force.

Interrupts the driving force from the drive device to the engagement movement mechanism 1t'ji '
r'iJ function, and when shutting off, the biasing body's
Since the structure is provided with a drive cutoff mechanism that moves the recording disk to the first position by the J force, the power is cut off when the recording disk is in a position other than the first position, for example, the second position. can also be quickly moved to the first position, which has the effect of maintaining the dimensional accuracy of the recording disk in good condition.

[Brief explanation of drawings]

1 and 2 are views common to a conventional recording disc production device and an embodiment of the present invention, and FIG. 8 is a diagram showing a recording disc reproducing device according to an embodiment of the present invention. FIG. 4 is a detailed view of FIG. 8 in the direction of arrow 2, and FIG. 5 is a detailed view of the main part of FIG. 8 to show the operation. In the figure, (1) is a recording disk, (21i;j cartridge, (9) is a moving body, Oq is a signal detector, a:j is a moving body drive device, 041 is a rack plate, and QI'9 is an engagement movement The rotating rod of the mechanism, and the rotating pipe of the engaging movement mechanism,
Cft is the lifting body of the engagement movement mechanism, 0th is the pinion gear of the drive cutoff mechanism, and the older sister is the solenoid of the drive cutoff mechanism.
indicates a biasing body which is a compression spring. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent Makoto Kuzuno- No. 1″:2 Figure 2

Claims (1)

[Claims] a moving body on which a signal detector for detecting signals from a recording disk is mounted; a moving body drive device for moving the moving body in a radial direction of the recording disk; When the recording disk is moved to a standby position on the outer periphery, in response to the movement of the moving body, the recording disk is moved from a first position where a signal can be detected by the signal detector to a second position separated from the first position. an engaging and moving mechanism that moves the moving body to the position, a biasing body that urges the moving body from the standby position in the direction of the recording disk, and a driving force that can be cut off from the moving body driving device to the engaging and moving mechanism. A recording disc playback device comprising a drive interrupting mechanism that transmits power to the user and moves the recording disc to a first position by the biasing force of the biasing body when shutting off.