JPH0438656A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To prevent the malfunction of a tone arm due to erroneous operation or the like at the time of disk reproduction by operating an interlock means interlocking with a changeover switch for switching between the record reproducing mode and the disk reproducing mode and stopping the operation of an arm mechanism at the time of switching to the disk reproducing mode. CONSTITUTION:When a changeover switch 70 is switched to the 'CD' side to switch the mode to the disk reproducing mode, a control lever 71 is turned clockwise by an operation lever, and its rear end part slides an operation slide 74 toward the other end side through a shaft 74c. Therefore, the shaft part of an arm rest 79 brought into contact with a stepped piece 74d is pressed upward by the slope of the base part of the stepped piece 74d, and the arm rest 79 is moved upward to lift the base part of a tone arm 17. Thus, downward turning of the tome arm 17 is stopped to surely prevent a pickup 18 from coming into contact with a tray, a cabinet, or a disk even if the tone arm 17 is erroneously moved in the disk reproducing mode.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is designed to play both analog records played by a stylus pickup and discs such as compact discs played by an optical pickup. The present invention relates to a composite type disc playback device.

[Conventional technology]

Conventionally, this kind of composite type disc playback device is disclosed in, for example, Japanese Utility Model Application Publication No. 1988-1.56049 (GIIB 17104).
), a plurality of disk storage compartments are formed on the top surface of the turntable, which is supported by the disc player body and on which analog records are placed. Inside, there is a tone arm and its drive mechanism that plays the record,
It is constructed by disposing a CD drive mechanism consisting of a turntable for rotating a CD, an optical pink-up, etc.

When playing a record, place the record on the turntable, rotate the Kuhn table, and trace the sound groove with the tone arm.
When reproducing a disc, the turntable is rotated intermittently to guide the recessed part in which the desired disc is stored to the disc mounting position, and the four discs are pressed onto the CD rotating turntable by a stabilizer.

Switching between record playback and Deinuku playback is performed by operating an operation button provided on the front of the main unit.

[Problem to be solved by the invention]

In conventional composite disc playback devices, record playback and disc playback are selected by button operation, and the tone arm mechanism and CD drive mechanism are operated according to this selection, and both mechanisms operate independently. For example, when playing a disc, there is a risk that the tone arm may malfunction due to some kind of malfunction. There is a risk of injury.

In particular, when the tone arm is rotatably supported on the main body in the horizontal and vertical directions, as seen in conventional record players, so that the tone arm can be moved to any position on the record for manual playback, If the tone arm is moved incorrectly, or if the tone arm is moved by external force, the pickup at the tip of the tone arm may come into contact with the turntable, the main body, or the disc, causing damage.

The present invention has been made with these problems in mind, and is intended to reliably prevent tone arm malfunctions during disc playback in a composite disc playback device that can play both analog records and discs. The purpose is to

[Failure to solve the problem]

In order to achieve the above object, the disc playback device of the present invention includes a rotary tray that is rotatably supported by a cabinet and on which an analog record is placed, and a needle pick amplifier that is placed on the tray. an arm mechanism that traces a recorded record, a disc holder that is recessed in the top surface of the tray and on which the Deinuk is placed, a turntable that rotates the disc placed on this holder, and an optical system that plays the disc. A disc playback section consisting of a type pickup, etc., a changeover switch installed in the cabinet that switches between record playback mode and disk playback mode, and an arm mechanism that operates in conjunction with switching of this changeover switch and operates when switching to disk playback mode. interlock means for preventing

[Effect]

In a disc playback device configured as described above,
When the changeover switch is switched to the disc playback mode prior to disc playback, the interlock means operates in conjunction with this to prevent the arm mechanism from operating, thereby preventing the arm mechanism from malfunctioning during disc playback.

〔Example〕

Examples will be described with reference to the drawings.

(First Example) First, a first example will be described using FIGS. 1 to 31.

In Figures 1 to 4, (1) is a cabinet, (2
) is a bracket supported horizontally within the cabinet (1), (3) is a center shaft installed in the bracket (2) and located in the center of the cabinet (1), and (41 is a shaft rotatably supported on the shaft (3)). It is a circular rotating tray that is supported and on which an analog record disc (5) is placed.

As shown in FIGS. 5 and 6, on the upper surface of the tray (4), four disks are placed and housed in which deinuku are placed and stored at equal intervals in symmetrical positions with respect to the center of rotation. Part (6)
is recessed deep into the thickness of the disc, and a disc playback operation hole (7) from which a turntable and optical pink-up, which will be described later, protrude freely, is provided in each mounting portion (6). There is.

The rotation of the tray (4) is controlled by fixing a pulley (9) to the rotating shaft of a motor 181 supported by the bracket (2), and forming concentrically the pulley (9) and the lower surface of the tray (4). The tray (4) is rotated by driving the motor (3).

When playing a disc, it is necessary to control the rotation of the tray (4) so that the mounting section [6] moves to the disc playing position at the rear center of the cabinet (1). The rim 00 has notched detection portions a' at the same spacing as the arrangement spacing of the placement portions (6);! J is formed,
This is shown in Fig. 2 by position detectors a and 1 such as photocouplers.
By detecting and controlling the drive of the motor (8),
It becomes possible to correctly move each placing part (6) to the playback position in sequence, and in this case, the placing parts (6) are sorted according to the number of notches formed on the rim 00 near each detection part 0. It is possible to guide the desired placing section (6) to the playback position.

α4) is a record (5) placed on a tray (4)
As shown in Figures 1 and 4, this is an arm mechanism that is supported by the cabinet (1) so that it can rotate horizontally around a vertical axis α0, and can also move up and down around a horizontal axis αQ. It consists of a rotatably supported tone arm Q7) and a needle-type pink-up scoop attached to the tip of the tone arm 07). By moving the record to the silent groove (5) and lowering the tone arm αη, the signal from the record C51 is read by the pick-up α, and the record C51 is brought into a reproduction state.

As mentioned above, each of the trays (4) is recessed deeper than the thickness of the disc, so when the disc is housed in the tray (6), the record disc ( 5)
can be placed and played.

a9 is the cabinet (1) as shown in Figures 7 and 8.
) is rotatably supported on the support shaft of the cabinet (1), and covers the entire tray (4) and the am mechanism 04) from above, c21) is rotatably supported on the support shaft 1d of the cabinet (1), as shown in FIG. As shown in FIGS. 7 and 8, it is a clamping member provided between the tray (4) on the cabinet (1) and the lid q9, and the entire disc on the mounting section f61 guided to the playback position. a small lid that covers the disc from above, and a chuck pulley that is integrally attached to the inside of the small lid (c) and holds the disc in the playback position by pressure between it and the turntable.
It consists of

When the lid is closed, the tip of the small lid is in contact with the upper end of the shaft (3), as shown in FIG.

That is, it is held slightly above the record C51 on the tray (4), and therefore the record can be played even with the small lid closed.

As shown in FIG. 7, when only the lid body 09 is opened upward, the upper surface of the mounting section (6) other than the disc playback position is opened, so that each mounting section (6) If the disc can be replaced, at this time, the loading section (at the playback position)
6) is covered with a small lid (c), so the disc at the playback position can be protected when replacing the disc.

Furthermore, as shown in Fig. 8, if the small lid body (C) is also opened upward, discs can be replaced in all the trays (6) of the tray (4), or record discs and discs can be replaced.
51 can also be placed thereon.

As shown in FIG. 1, on the lower surface of the small lid body, there is an operation hole () of the mounting section (6) adjacent to and at a position away from the disc placed on the mounting section (6) at the playback position. A record presence/absence detector (c) for detecting the presence or absence of a record disc (5) from above the tray (4) is provided at a position opposite to the cabinet (1). 2
A pair of record presence/absence detectors (A) are provided (see FIG. 9).

The detection signals of this detector (c) and cn are used as control signals for the disc playback block, which will be described later. When the record disc presence detection signal is detected, the operation of the disc playback block to the disc playback state is prohibited, and the record disc ( 5) is protected.

Next, the disc playback system will be explained.

Disc playback blocks shown in Figures 10 to 13 (
As shown in Fig. 9, the 10th
As shown in the figure, the main chassis (C) is fixed to the cabinet (1), the main chassis (C) is supported rotatably up and down, and the main chassis (C) is rotatably supported at the tip of the subchassis frame. The optical pickup (331, main chassis (C) A drive motor (34) that can rotate forward and backward, and a pink-up drive mechanism (3) that moves the multi-hick absorber (33) by the rotational force of the motor (34).
The sub-chassis (A) is moved up and down by the rotational force of a motor (34), and a lifting mechanism (36).

The main chassis (c), as shown in FIG.
It is formed into a frame shape, and a pivot recess (37) is formed on the base folding side, and by fitting the boss parts (38) protruding from both sides of the base of the sag chassis frame into this, the sub-chassis (A) is formed.
is supported so that it can rotate up and down, and both chassis (c).

A spring (39) stretched between the bases of the sub-chassis wing is biased to rotate the tip of the sub-chassis wing upward.

Turn tape/L supported at the tip of the subchassis wing
As shown in FIG. 9, / (to) is placed below the disc playback position, and when the tip of the sub-chassis wing rotates upward, the turntable (to) moves to the disc mounting part (to) at the playback position. 6) through the operation hole (7) of the tray [4]
A disk (40) protrudes upward and is on the placing part +61.
The pindle motor (31)
The turntable (to) rotates, and the Deinuk (4
0) rotates.

The optical pickup (33) is slidably supported by the sub-shaft (A) so as to trace the disk (40) on the lens (a3j is the tongue tape) in the radial direction, and extends above the sub-chassis wall. When the pickup (33) is rotated, the pickup (33) and the turn tape /L/(to) protrude upward from the operation hole (7) of the placing part (6) at the playback position,
It slides along the operation hole f7).

Next, the pickup drive mechanism will be explained using FIGS. 10 to 16.

(41) is a first rack slide (hereinafter referred to as the first
The main chassis (called Nuride) shown in FIG.
c) By fitting it into the guide boss (28B) on the top, it can slide parallel to the guide rail (3).

02 is a second rack slide (hereinafter referred to as the second slide) which is slidably supported on the first slide (41) in the same direction as the first slide (41) and has an elastic retaining piece (42a). 42a) is adapted to elastically abut against the other surface of the pink up (33) by means of a spring interposed between the support piece (42b) and the second slide (42).
The first slide (41) is biased to slide to the left by a spring (44) interposed between the opposing protrusions (41c) and (42c) of both slides (41), +42). Holding arm (41a) and second slide (4
The pick-up drive 3)
is held.

Both slides (411, (four racks) are formed with rack parts (41d) and (42d) of the same pitch, respectively, but the rack parts (42d) of the second slide (four racks) are the same as those of the first slide. (41) is longer than the rank part (41d), and a small rack gear part (42e) is protruded from the lower surface of the left end of the second slide α, which is the first part (41).
It passes through the elongated hole (41e) of the ride (41) and leads out downward from the main chassis.

(The tilt is the drive motor supported by the main chassis pane (
The drive gear (46) is rotatably supported by the support shaft (47) on the main chassis (c), and the drive gear (46) is rotatably supported by the support shaft (47) on the main chassis (c), and the drive gear (46) is rotatably supported by the shaft (47) on the main chassis (c), and the drive gear (46) is rotatably supported by the shaft (47) on the main chassis (c).
It is a pink feed gear having a small gear part (46a) that meshes with 1d) and (42d), and is a reduction gear (50) supported by support shafts [48) and (49) on the main chassis (c), respectively. (15η) is connected to the drive gear (1.
), the two slides f41) and (4) slide back and forth, and the pickup (33) held between the two pieces (4], a), and (42a) is moved.

Here, both slides +41+, (42 is the spring (44
), both rank portions (41d) are biased in directions that repel each other.

(42d) and the small gear part (46a) are absorbed, and the backlash generated at the respective meshing parts of the small gear part (46a) is absorbed.
Backlash pickup (
33) so as not to cause movement delays.

Figure 10 shows that the pick feed gear (46) is rotated clockwise to allow both slides! 41) , (42 is slid to the right and the pickup (33) is moved to the innermost circumference of the disc on the turn tape) V (to). At this time, the first slide (41) is the rack part (4
1d) is detached from the small gear part (46a), and its right end comes into contact with the stopper 6 on the main chassis (c), so it remains stopped from then on.
) also stops at this position.

The second slide (for the 4-slide, the rack part (42d) is the first
Slide (41) is more beautifully formed, so
The subsequent clockwise rotation of the pick feed gear (46) causes it to slide further to the right, and as shown in FIGS. 11 and 14, the elastic retaining piece (42a) of the second slide (42)
leaves the pickup (33), and the pickup (33)
) will be released from the clamped state.

When the pick feed gear (4G) continues to rotate after this, the rank portion (42d) of the second slide (42) also moves to the small gear portion (46).
a), and the pickup drive mechanism (the third yen is detached from the drive motor (34)).

Next, the elevating mechanism (36) is shown in FIGS. 10 to 12.

This will be explained using FIGS. 17 to 21.

(Foundation) is a cam gear rotatably supported by a shaft (Foundation) on the base of the main chassis frame, and as shown in Figures 17 to 19, the gear part (58a) has a toothless part (58b). In addition, there is an inclined part C58C on the circumferential surface, and a cam part on the top surface (C58C).
58d) and a gear post portion (53e) are formed on the lower surface, respectively, and a protrusion (53r) for operating a switch is provided.

The gear part (58a) of the cam gear (G) engages and disengages from the drive gear (45) via reduction gears η and (A) supported by support shafts (A) and (4) on the main chassis pane, respectively. In FIG. 10, the toothless part (58a) of the gear part (58a) is connected freely.
53b) is stopped because it faces the six reduction gears, but when rotational force is applied by the control slide described later, the gear part (53a) meshes with the six reduction gears, and the drive motor (34) This causes the cam gear to rotate.

On the inclined part (58C) of the cam gear race, an operation pin 6 protruding from the side surface of the base end of the subchassis blade is connected to the spring (39C).
), and as the operating shaft 69 slides on the inclined part (580) according to the forward and reverse rotation of the cam gear (A), the subchassis wing is rotated up and down, and its tip turn tape /I/ (to), pickup (3
3) and the like move up and down as shown in FIGS. 20 and 21.

In the downward slope shown in FIG. 20, as shown in FIG. 4) It does not come into contact with the record (5) or disc (40) placed above.

In addition, in the raised state shown in FIG. 21, the disc playback unit projects upward from the operation hole (7) of the placement unit (6) at the playback position, and the disc (40) of the placement unit (6) is rotated by the turn tape/ Place it on L/ (to) and press and hold it between it and the chuck pulley (c).

The above-mentioned pickup drive mechanism (35) and lifting mechanism (trowel) are each connected to the drive motor (34) so as to be freely engageable and detachable, but the timing of engagement and disengagement of each of them is at the 22nd
This is done by a control slide as shown in the figure.

As shown in Fig. 11, this control slide (■) consists of two guide shafts (6) protruding from the bottom surface of the main chassis (C).
1) so as to be slidable left and right, and, as shown in FIG. 10, is slidably biased to the right by a spring trowel whose one end is latched to the main chassis (c).

As shown in FIGS. 23 and 24, a rank part (60a) is provided at the right end of the control slide, and this is supported by a support shaft on the bottom of the main chassis (C) at the bottom of the gear lever. It meshes with the gear part (64B), and here, the rack part (64b) at the upper part of the gear lever engages with the second slide (4-inch small rack gear part (42e)) so as to be freely engageable and detachable. It has become.

At the left end of the control slide... there are teeth (60h+), (60
h2).

A notch tooth portion (60b) having a diameter of (60bg) is provided, and is adapted to engage and disengage from engagement teeth (53e+) and (58e2) formed on the gear post portion (53e) of the cam gear.

FIG. 10 shows the end of the movement of the pickup (33) in the disc playback state, and when the drive motor (34) rotates the pick feed gear (46) clockwise from this state, as described above, the Small gear part (46
a) has finished meshing with the rank part (41d) of the first slide (41), and has finished meshing with the rank part (42d) of the second slide (42).
), the second slide (42) slides to the right, and its elastic retaining piece (42B) separates from the pickup (33).

During this operation, as shown in FIG.
The second small rack gear part (42e) meshes with the rack part (64b) of the gear lever, and as the second slide (42) moves, the gear lever rotates clockwise, and the gear V
/(-The control slide (2) is slid to the left via the -1 gear portion (64a).

On the other hand, since the toothless part (53b) is opposed to the six reduction gears and presses the engaging teeth (53e2) of the gear post part C588), the cam gear □□□ rotates clockwise, and the gear part (5
3a) meshes with the reduction gear 6'I) which is rotated counterclockwise by the drive motor (34), and from then on, the cam gear (34) meshes with the reduction gear 6'I) which is rotated counterclockwise by the drive motor (34). The inclined portion (580) causes the sub-chassis wing to rotate in the direction of lowering the disc playback section.

At this time, the second slide (42 elastic retaining pieces (42a)
) is already separated from the pickup (33), the rotation of the sub-chassis wing is performed with the pickup (33) released from the clamping state. Note that even in the lowered position of the pick-up (the hook), the engagement arm (41a)
is engaged with a part of the pickup (33).

At the initial stage of rotation of the cam gear branch, the gear post section (53
The engaging edge (53e)' of e) is connected to the tooth (
60b I) and slide the control slide further to the left, so that the gear lever and small rack gear (
42e) through the second slide (42 moves to the right,
The rank part (42d) separates from the small gear part (46a) of the pick feed gear (46), and then the control slide moves to the retaining teeth (53e+), (5
Since the peripheral surface of the gear post portion (58e) having the same diameter as the tip circle of 3e2) maintains its position by pressing the teeth (60bl), the second slide (42) is controlled to be in a stopped state.

When the sub-chassis 〇 rotates as the cam gear (A) rotates and the disk reproducing section completes its descent, the protrusion (58f) of the cam gear (A) comes into contact with the switch ring shown in Fig. 10, and this In order to operate the current, a drive motor (34
) is cut off, and the cam gear () stops.

Next, when you want to shift to the disc playback state again, you can command this using the operation switch (not shown), and the drive motor (
34) is rotated in the opposite direction to the above-mentioned direction, the cam gear racer is rotated counterclockwise, and the sub-chassis wing is rotated by its inclined part (530), and the disc playback part is brought to a predetermined position (horizontal position). Rise.

After that, Cam Gear Co., Ltd.'s Gear Poss i (58e) K
The engaging teeth (58e+) and (58e2) are the teeth (60b+) at the notched tooth portion (60b) of the control slide.
, (60b2) in order to sequentially engage the control slide-
is slid to the right, the gear lever is rotated counterclockwise, and the second slide (4) is slid to the left via the small rack gear portion (42e).

Then, the rack part (42d) of the second slide i4 is connected to the small gear part (46a) of the pink feed gear (4 [1) which is rotated counterclockwise by the drive motor (34),
When the second slide (4 匈) further slides to the left by the drive motor (34), the small rack gear part (42e) separates from the gear lever, and then the elastic retaining piece (42a) of the second slide (42) picks up ( The first slide (4
Also in 1), the rack portion (41d) meshes with the small gear portion (46a), making it possible to feed the pickup (33).

The second Nuride (4 rack part (42d) is the small gear part (
Immediately after meshing with cam gear (a), the toothless part of cam gear (a) (
58b) comes close to the reduction gear 6, but the control slide (2) cannot slide to the position where it is regulated by the guide shaft (6) due to the rightward bias by the spring.
Notched tooth portion (60')) (The position where the engaging tooth (58e2) of the gear post portion (53e) is pressed by the D tooth (60bs) and the cam gear ■ makes the toothless portion (53b) face the six reduction gears. The cam gear (to) stops rotating.

Next, the positioning mechanism of the rotary tray (4) will be explained.

In Figure 25, the ring is connected to the support shaft (
The cam part (58d) of the cam gear Q is rotatably supported by the
) The lock lever has a ponnu part (66B) that is engaged with the cam part (66B), and is rotated clockwise by a spring, so that the tip part (66a) is attached to the circumferential surface of the cam part (53d). The lock lever is rotated as the cam gear rotates.

The O Samurai has four V-shaped grooves formed at equal intervals on the same circumference on the inner circumferential side of the rim 00 on the bottom surface of the rotating tray (4), and each disk on the tray (4) can be placed there. When the section (6) moves to the disc playback position, each V-shaped groove section faces the lock pin (66b) at the other end of the lock lever ■, and by clockwise rotation of the lock lever wheel, By engaging the lock pin (66b) with the V-shaped groove, the mounting section [6] is accurately positioned at the playback position.

The cam part (53d) of the cam gear branch has an inclined part (580
) to raise the disk reproducing section of the sub-chassis wing. At the beginning of the operation, the lock lever is rotated by a spring wheel to engage its lock pin (66b) with the V-shaped groove I [present], and the reproducing section is lowered. At the end of the operation, the lock lever wheel is rotated counterclockwise to remove the lock pin (661) from the V-shaped groove.

Therefore, disc playback can be performed with the tray (4) placement part (6) accurately positioned at the playback position, and when the disc is not being played back, the tray (4) can be released from its position and rotated freely. becomes.

In particular, since the positioning operation of the tray (4) is performed in conjunction with the operation of the disc playback block (c), the tray (4) can be rotated continuously when the disc is not being played, and records can be played back without any problems. Therefore, it is of great practical value in this kind of composite type disc playback device.

Next, the interlock mechanism between the record playback mode and the disc playback mode will be explained using FIGS. 26 to 31.

In Fig. 26, Q is a left-right sliding type changeover switch provided on the upper right front part of the cabinet (1).When operated toward the right [ANALOG PLAYERJ side], the record playback mode is set; If you move it to the "CD" side, it will enter disc playback mode. (c) is the cabinet (
1) The control lever is rotatably supported by a support shaft @, and its front end is located on the left side of the operation lever v4 of the changeover switch handle, and the spring f
3, and the end portion m is in contact with the operating rod ad.

Q → is provided on the upper surface of the bracket (2) and inserts the guide pin (74a) on the bracket into the guide hole (74a) at one end of the bracket (2).
It is an operation slide that is slidably supported by loosely inserting the guide pin (741) in the middle part of the abdomen into the guide hole (7G) of the bracket (2), and the control lever (71).
) constitutes an interlock means with the slide (74
Insert the bracket (2) through the guide hole (7G) in the middle of 1
A shaft (74G) protruding downward from 1 is installed, and a spring (74G) is installed between this and the shaft of bracket (2) shown in FIG.
The bridge is stretched, and the slide f4 is biased to slide toward one end.

The other end of this slide has a stepped piece (7
4d) is formed, and as shown in FIGS. 27 and 28, the lower end of the shaft section (■) of the armrest (7) disposed below the base of the tone arm αη is formed with a stepped piece (74d).
) is in contact with the top.

The rear end of the control lever) is connected to the shaft of the slide C4 (74).
c) It is located at position 1 to the left.

In the record playback mode shown in FIGS. 26 to 28, after placing the record r51 on the tray (4), the tone arm 0η is rotated to
8) to the silent groove of the record (5), the mota (8)
When electricity is started and the tray [4] rotates and the tone arm αη7 is rotated downward, the pink up 08) reads the signal from the record [5] and enters the playback state.

Next, as shown in FIG.
When you operate the DJ side and switch to disc playback mode,
The control lever σ is rotated clockwise by the operating lever vd,
The rear end slides the operation slide cage → to the other end side via the shaft (740).

Therefore, as shown in FIGS. 30 and 31, the armless (71) that was in contact with the stepped piece (74d) is pressed upward by the slope of the base of the stepped piece (74d). , the armrest (71) moves upward and lifts the base of the tone arm Q''I.

As a result, even if the tone arm 071 is moved by mistake in the Deinuku playback mode, it is prevented from rotating downward and the pickup 08) hits the tray (4), gear vignette (1), or disk (40). contact is reliably prevented.

(Second Embodiment) Next, a second embodiment will be described using FIGS. 32 to 34.

In this embodiment, a switching switch (70 is a front-back sliding type, 8]) for switching between a record playback mode and a disc playback mode is supported on the right side of the cabinet (1) so as to be slidable back and forth. The front end is an interlocking Nuride connected to the operating rod d of the changeover switch Q0, and the rear end is formed with a downward bending piece (81a), which moves the front and back in conjunction with the forward and backward switching operation of the changeover switch Q0. to slide.

(A) is rotatably supported on the bottom surface of the bracket (2) around a support shaft (C), and one side has six bent pieces (
The L-shaped locking lever facing 81a) is integrally installed at the lower end of the vertical shaft n5 of the arm mechanism 04), and has a locking lever @ boss (c) facing the other side of the force at the tip. This is a protruding locking arm, which together with the interlocking slide 6η and the retaining lever (c) constitutes an interlocking means, and when the tone arm αη rotates in the horizontal direction, the vertical shaft portion rotates together. , the locking arm (b) also rotates.

In such a configuration, when switching to the record playback mode shown in FIGS. 32 and 34, the interlocking slide 61) is retracted to the front by the changeover switch handle, so that the engagement lever (a) is rotatable. Even if the tone arm α is rotated in conjunction with the record playback operation, the locking arm 2 integrated therewith is often prevented from rotating, so the record playback is performed in the manner described above.

On the other hand, as shown in FIG. 33, the changeover switch ff
When you slide l backwards to switch to the disc playback mode, the operating lever (7) causes the interlocking slide a to slide backwards, and its bent piece (81a) presses the engagement lever @gong, causing it to move. When rotated clockwise, the retaining lever (A) is placed in the boss (C) of the locking arm (B) at the stop position of the tone arm αη.
comes into contact with.

Therefore, in this disc playback mode, even if you try to rotate the tone arm 071, the tone arm 0
Since the movement of the locking arm (7), which is integrated with the locking arm (7), is prevented from moving by the retaining lever 6, the tip of the tone arm will not rotate from the stop position, and malfunction of the tone arm is prevented.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

The interlock means is activated in conjunction with the changeover switch that switches between record playback mode and disc playback mode, and prevents the arm mechanism from operating when switching to disc playback mode.This prevents the tone arm from being activated due to an erroneous operation during disc playback. It can be reliably prevented from operating,
It not only protects the needle-type pickup at the tip of the tone arm, but also prevents misuse, which is of great practical value.

[Brief explanation of drawings]

The drawings show an embodiment of the Deinuk regeneration device according to the invention,
1 to 31 show the first embodiment, and FIG. 1 is a plan view when the lid is omitted, FIG. 2, FIG. 3, and FIG.
The figures are a front view cut along line A-A' in Figure 1, and It
-11' line cut left side view and C-σ line cut old and new ([11
The top view, FIGS. 5 and 6 are a perspective view as seen from above and a perspective view as seen from below of the rotating tray, and FIGS. 7 and 8 respectively.
The figures are a right side view illustrating the open/closed state of the small lid, FIG. 9 is a plan view showing the old disc playback block, and FIG.
Figure 0 is a plan view of the disc playback block, Figure 11 is a cutaway front view of the same, Figure 12 is an exploded perspective view of the same, Figure 13 is a cutaway right side view of the same, and Figure 14 is a part of the disc playback block omitted. FIG. 15 is a partial perspective view of the pickup drive mechanism, and FIG. 16 is a partial perspective view of the pickup drive mechanism. A perspective view of the second rack slide, FIGS. 17, 18 and 19 are respectively a front view of the cam gear, a perspective view seen from above and a perspective view seen from below, and FIGS. 20 and 21 are respectively discs. FIG. 22 is a perspective view of the control slide; FIGS. 23 and 24 are plan views for explaining the operation of the control slide; and FIG. 25 is a rotating tray positioning mechanism. 26 to 31 show the interlock mechanism between record playback mode and Deinuk playback mode, FIG. 26 is a plan view in record playback mode, and FIGS. 27 and 28 respectively. FIG. 26 is a right side view taken along line D-D and a front view taken along line E-E, FIG. 32. Right side view and cutaway front view corresponding to FIG.
Figures 34 to 34 show the main parts of the second embodiment;
33 are plan views in the red playback mode and disc playback mode, respectively, and FIG. 34 is a side view. (1)...cabinet, (4)...rotating tray,
C5)...Record disc, (6)...Disc mounting section,
0(A)...Arm mechanism, (17)...Tone arm, 081...Needle pickup, (7)...Turn tape)v, (33)...Optical hink up, (4
0)...disc, wire...mode changeover switch, V1
)...control/<-1 (74+...operation slide,
翰...arm len), al)...interlocking slide, ni)...engaging lever, (b)...locking arm.

Claims (1)

[Claims] (1) A rotating tray that is rotatably supported by a cabinet and on which an analog record is placed; an arm mechanism equipped with a stylus pickup that traces the record placed on the tray; and an upper surface of the tray. a disc loading section that is recessed in the housing and on which the disc is placed; a disc playback section that includes a turntable that rotates the disc that is placed on the loading section, an optical pickup that plays the disc, and the like; and the cabinet. a changeover switch provided in the switch for switching between a record playback mode and a disc playback mode, and an interlock means that operates in conjunction with switching of the changeover switch and prevents operation of the arm mechanism when switching to the disc playback mode. A disc playback device characterized by: