JPS5857828B2 - auto player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an auto player, and particularly provides an auto player capable of freely selecting between auto repeat operation and manual operation.
It is strained.

FIG. 1 is a bottom view of a fully automatic player according to the present invention viewed from the bottom of the player chassis, and FIG. 2 is a perspective view of the main parts of the fully automatic player viewed from above.
FIG. 3 is a plan view of the same from above.

First, reference numeral 1 denotes a center gear rotatably attached to the center of the chassis. It is fixed integrally with the center shaft (on which the turntable is placed) that protrudes from the back side of the unit.

The center gear 1 is rotatably and internally supported by a bracket 41 installed in the chassis.

Additionally, a support shaft 5 is stretched between the tip of the bracket 4 and the chassis.
A plate-shaped drive gear 6 with a large diameter is rotatably attached.

On the lower surface of the drive gear 6, a first trip 8 and a second trip 9, which can rotate around a support shaft γ, are arranged l
The first trip 8 is attached independently and overlappingly, and a claw piece 10 is protruded from one end of the first trip 8, and a working piece 11 is provided from the other end, and the end 8a of the working piece 11 is It is bent and faces into the elongated hole 12 of the drive gear 6 to restrict the range of rotation of the first trip 8.

゛The drive gear 6 has a toothless portion 6a following a part of the gear, and a long pin 6b and a short pin 6ct6 on the lower surface thereof.
A is provided protrudingly.

On the other hand, one end 9a of the second trip 9 is extended long from the lower surface of the drive gear 6, and its tip is bent, facing into the elongated hole 13 of the drive gear 6, and the second trip 9 rotates. It's like restricting the range of movement.

In addition, a heart cam groove 14 formed by two protrusions is provided on the upper surface of the drive gear 6, and a portion of the cam groove 14 is deep as described later, and is used to control the elevation of the arm lifter. Served.

Reference numeral 15 denotes a start/reject operating lever, which is supported by a bracket 16 formed by standing up the chassis, and has an operating part 15a and an operating part 15b, and the operating part 15b is connected to the operating piece 11 of the first trip 8. It's like facing.

Reference numeral 17 denotes a shaft mounted on the chassis. A main lever 18 is rotatably attached to the shaft 17, and the main lever 18 is always pushed back by a coil spring 19 attached to the shaft 17. The main lever 18 is mounted so as to urge the one end 18a side downward in the clockwise direction, and a protrusion 20 for controlling the rotational movement of the main lever 18 protrudes on the lower surface of the one end 18a side. The cam groove 14 is provided so that it is in contact with the inside of the cam groove 14.

Therefore, this main lever 18 performs a seesaw action and a rotating action.

Further, a projecting piece 21 is provided protruding from the other end 18b side of the main lever 18, and between this projecting piece 21 and an extension portion 19a of the portion where the coil spring 19 is fixed to the main lever 18, A certain interval is provided.

Reference numeral 22 designates a rotating shaft that is integral with the horizontal rotating shaft of a tone arm (not shown), and is smoothly held by a well-known bearing mechanism f.A fan-shaped lever 23 is fixed to the rotating shaft 22.
In addition, the tone arm operating plate 24 is rotatably fitted loosely so as to overlap the fan-shaped lever 231.

The tone arm actuating plate 24 is connected to a sizing lever 28, which will be described later, and is formed into an elongated shape to determine the drop point of the squill onto the disc. An operating pin 25 is installed near the moving shaft 22 and is interposed between the protrusion 21 and the extension 19a of the coil spring 19.

Further, the drop point fine adjustment cam 26 is attached to the side opposite to the operating pin 25, and the cam is loosely fitted into the fan-shaped hole 27 formed in the fan-shaped lever 23. In relation to the fine adjustment cam 26,
The above fine adjustment is possible.

24a is the fan-shaped lever 23 and the tone arm operating plate 24;
The tone arm operating plate 24 is always biased counterclockwise against the fan-shaped lever 23 by a spring tensioned between the tone arm actuating plate 24 and the fan-shaped lever 23.

Reference numeral 28 denotes a size determining lever rotatably attached to the shaft rod 1γ, which operates to indicate the drop point according to the size of the disk, and one end of which is formed by drilling a through hole. A cam hole 29 and a cam piece 30 are provided, and the cam hole 291 has two valley cams 29a, 2.
9b is the cam piece 30 (here is the two valley cams 30a, 30).
b are respectively provided, and the other end is connected to the drive gear 6.
It is extended by one concentric circle.

Reference numeral 31 denotes a disk size selector rod which is operated from the back side of the chassis to engage the cam 29a or 29bG.The rotation range of the size determining lever 28 is determined by selecting the position of the size selector rod 31. stipulate.

32 is a spring that urges the sizing lever 28 to rotate clockwise.

Reference numeral 33 denotes a substantially Y-shaped repeat feed lever supported rotatably around the shaft rod 11, and one piece 33a thereof.
The end of the supporting shaft 5t projects in the opposite direction, and a parallel cam 34, a V-shaped cam 35, and a guide cam 36 are connected to it, and the other piece 33bF has a spring 37 (l) that rotates. The urged repeat feed piece 38 is attached, and the feed piece 38 (a protruding pin 39 protruding downwards) moves along a through hole drilled in the chassis to actuate a program lever to be described later. There is.

Note that 40 is a spring that biases the repeat feed lever 33 in a counterclockwise direction.

Further, a projecting pin 41 is erected on the other piece 33b,
The spring 42 (therefore, one piece 44al of the modified Y-shaped arm stopper 44 which is biased clockwise about the support shaft 43) is brought into contact with the projecting pin 41.

45 is a hook provided on the other piece 44b of the arm stopper 44; 46 is a hook provided on the lower surface of the base piece 44c of the arm stopper 44; It is a protrusion pin.

Here, in the state shown in FIG. 1, that is, the V-shaped cam 35 of the repeat feed lever 33 is connected to the long pin 6b of the drive gear 6.
When the counterclockwise rotation is restricted by the spring 40, the protruding pin 41 of the reheat feed lever 33 is locked by the arm stopper 44.
a is locked to restrict clockwise rotation of the arm stopper 44.

When the long pin 6b comes off the V-shaped cam 35 due to the rotational action of the drive gear 6, which will be described later, the repeat feed lever 33 moves counterclockwise around the shaft 17.
This rotation releases the locking of the piece 44a of the arm stopper 44 by the projecting pin 41.

In this way, the arm stopper 44 by the projecting pin 41
The rotational movement of the arm stopper 44 when the rotation restriction is released is determined according to the operation setting position of the repeat feed plate, which will be described later.

That is, when the repeat feed plate described later is operated in the power-on mode, the protrusion pin 4 of the arm stopper 44
6 is a valley cam surface 84, which will be described later, provided on the repeat feed plate.
1, the arm stopper 44 is rotated about the support shaft 43 in the clockwise direction in FIG. The section 45 locks the upright piece 24b of the arm actuating plate 24, thus restricting the lead-in of the tone arm. However, when the repeat feed plate is operated to the auto repeat position, the protruding pin Even if 41 releases the locking of one piece 44a, the protruding pin 46 of the arm stopper 44 is in contact with a parallel cam 83, which will be described later, provided on the repeat feed plate, so the arm stopper 44 does not hold the above-mentioned hook portion 4.
5 do not engage with the upright piece 24b, the arm operating plate 24 can freely rotate in the lead-in direction under the force of the spring 24a.

Further, due to the rotation of the arm actuating plate 24 in the lead-in direction, this causes the tip 9 of the second trip 9 described above.
a to enable continuous rotation of the drive gear 6.

In other words, the auto-repeat operation of the player is enabled.

Reference numeral 41 denotes an operation switch plate rotatably mounted around the shaft rod 17, and between it and the repeat feed lever 33 (a spring 47a is interposed between the switch plate 41 and the repeat feed lever 33). The actuation switch plate 47 is biased counterclockwise.

Reference numeral 48 denotes a switch attached to the actuation switch plate 4T, and its actuator 48a is covered by the actuation plate 48b. The switch operation rod stands up from the lid plate and looks like it's facing you.

In addition, 49 is a speed selector switch, 50 is a drive motor, and 51 is a hydraulic type lid shaft that faces the lower surface of the main lever 18, and is always urged upward via a spring to operate the main lever. 18.

FIG. 3 is a plan view of the device shown in FIG. 1, viewed from the top surface on which the turntable is placed, with the player's turntable and the like facing upward.

Here, 52 is a center shaft integrated with the center gear 1, and a turntable 53 is supported on the center shaft 52 as is well known.

Further, 54 is a drive shaft of the drive motor 50, and the drive shaft 54 and the convex pulley 5 of the turntable 53 are connected to the drive shaft 54.
A rubber belt 56 is stretched between the turntable 53 and the turntable 53 so that the turntable 53 rotates at a predetermined speed.

Reference numeral 57 denotes a size selector having the size selector rod 31, which detects the size of the disc (LP or EP disc) placed on the turntable 55 and selects the size selector from the spindle 5.
The size selector rod 3 is rotated left and right around 8.
The sizing lever is controlled by the first rotational position.

Reference numeral 59 denotes a horizontal rotation axis of the tone arm 60 connected to the rotation axis 22, on which a bracket 61 is supported, and a pivot 621 attached to the bracket 611.
Thus, the tone arm 60 is supported via the support plate 63 so as to be freely rotatable in the vertical direction.

Furthermore, a cartridge shell 64 and a cartridge 65 are attached to the tip of the tone arm 60.

66 is an armrest board having an armrest 68, 6T
69 is a lifter plate that directly supports the tone arm 60, and the end of the lifter plate 69 is connected to the lifter shaft 51.
is attached to.

In addition, a cam plate 70 whose lower surface is flat and protrudes is attached to the middle of the lifter shaft 51.
through the through hole 71 and along the through hole 71, gradually (
The cam plate 70 is supported by a guide cam 72 having a convex cam 72b formed to be high.

73 is a switch operating rod that stands up from the guide cam 72 and faces the operating plate 48b of the switch 48;
A spring 74 biases the guide cam 72 clockwise about the support shaft 72a.

Next, reference numeral 75 is a repeat feed plate that moves back and forth on the chassis, and its guide grooves 76 and 77 are guided by guide members 78 and 79t attached to the chassis, respectively.Furthermore, the repeat feed plate 75 The left side edge 1 includes three serrated cams 80, followed by a parallel cam 81, and the parallel cam 81 (followed by a sliding position stabilizing cam 8).
2 are connected in series, and the sliding position stabilizing cam 82I is
In order to set the feed position of the repeat feed plate 75 correctly, a steel ball (not shown) biased by a spring elastically supports the trough of the sliding position stabilizing cam, and the sawtooth shape The cam (this is where the protruding pin 39 is facing).

On the other hand, a parallel cam surface 8 is provided on the right edge of the repeat feed plate.
3 and a valley cam surface 84 following this are provided, and these cam surfaces 83 and 84 are provided with the arm I-tube 4.
Each time the projecting pin 46 protruding from the base piece 44c/l of No. 4 slides into contact with the base piece 44, the protruding pin 46 rotates by <7.

Further, a hook member 75a is attached to the rear end of the repeat feed plate 75 and is slidably supported in the longitudinal direction via a spring (not shown), and this hook member 75a engages with the pin 12c on the guide cam 12. The guide cam 72 is hooked and rotated clockwise to turn on the switch 48.

Note that 85 is an operating lever for the speed changeover switch 49.

With the structure as described above, the relationship between the operation of the repeat feed plate 75 and the operation of the fully automatic player will be mainly explained below with reference to FIGS. 4 to 6.

First, in the first position where the repeat feed plate 75 is pushed farthest back (upward in FIG. 3), the power off and lifter plate 69 up modes are selected, and then forward (downward in FIG. 3). In the second position shown in FIG. 5 when the crotch is pulled forward, the power is turned on and the down mode and manual mode of the lifter plate 69 are selected, and the lifter plate 69 is moved forward to the 2nd, 3rd, and 4th positions.
In the third position, the auto-repeat mode and the repeat count instruction mode are selected, respectively.

Here, when the repeat feed plate 75 is set and held at the third position corresponding to the auto-repeat mode, the guide cam 72 receives the force of the spring 74 and the support shaft 7
2a in a clockwise direction, the switch operating rod 73 pushes in the actuating plate 48b of the switch 48, thereby closing it.

Thus, power is supplied to the motor 50, which rotates, and the rotation is transmitted to the turntable 53 via the drive shaft 54 and belt 56.

Further, the operation rod 85 is operated to select the playback speed of the disc, and then the operation rod 15 for start/reject is operated to rotate the actuating portion 15b to select the first trip. Rotate the operating piece 11 of No. 8 about the support shaft 7 in the clockwise direction in FIG.

At this time, the claw piece 10 is engaged with the claw protrusion 3 at the bottom of the center gear 1, and the center gear 1 is rotated via the turntable 53 driven by the rotation of the motor 50. Therefore, the above claw protrusion 3
pushes out the claw piece 10, and therefore, the concave notch 6a of the tooth gear 6 having the first trip is rotated clockwise, and the gear following the tooth notch 6a meshes with the center gear 1 and rotates. be done.

Further, due to the rotation of the drive gear 6, the long pin 6b is engaged with the V-shaped cam 35 of the repeat feed lever 33.
is released from the V-shaped cam, and the repeat feed lever 33 is rotated clockwise around the shaft rod 17.
As it moves toward the post-escape guide cam 36, the repeat feed lever 33 is again largely rotated counterclockwise, and then the short pins 6c, 6 on the lower surface of the drive gear 6
d is guided along the circular foreground of the sizing lever 28.

On the other hand, due to the rotation of the drive gear 6, the cam groove 1
4 along which the protrusion 20 is guided.

By the way, FIG. 1 shows a state in which the auto mechanism is stopped, and at this time, the protrusion 20 is guided to the deep part of the cam groove 14, and therefore the lifter facing the other end 18b of the main lever 18 The shaft 51 has been moved from the back to the front of the paper in FIG. 1, and therefore the lifter plate 69 on the back side is in a lowered position.

As the drive gear 6 rotates, the cam groove 14 becomes shallower and the protrusion 20 also begins to rise, pushing up one side 18a of the main lever 18 to perform a seesaw action. 1
The lifter plate 69 shown in FIG. 3 gradually rises as it is pushed in from the front to the back of the paper.

Therefore, the tone arm 60 placed on this lifter plate 69 rises.

Next, the projecting piece 21 of the main lever 18 contacts the operating pin 25 on the tone arm operating plate 24, and the tone arm 60 is moved to the armrest 68 via the tone arm operating plate 24 and the fan-shaped lever 23. Push back up.

Further, the tone arm actuating plate 24 and the fan-shaped lever 23 are related to each other by a spring 24a, so that even if the tone arm actuating plate 24 overstrokes, the tone arm 60 can be moved safely and reliably.

By the subsequent rotation of the drive gear 6, the protrusion 2
0 reaches the folded portion 14a of the cam groove 14, the main lever 18 is rotated clockwise in the opposite direction, and the extension portion 19a of the coil spring 19 contacts the pin 25, causing the tone arm operating plate 24 to rotate. The tone arm 60 is rotated counterclockwise, that is, in the lead-in direction.

Immediately before the start of the lead-in, the sizing lever 28, whose operation has been limited by the long pin 6b and short pins 6c and 6d, rotates clockwise under the force of the spring 32.

This clockwise rotation stroke can be achieved by appropriately rotating the size selector 57 described above.
The size selector rod 31 is the valley cam 29a or 2
9b, it becomes arbitrarily defined.

In other words, this locked position becomes the drop-in point of the tone arm 60 for the LP or EP disc.

Note that the tone arm operating plate 24 is connected to the main lever 18.
The spring 19 prevents excessive stress caused by overstroke.

Thus, the lead-in of the tone arm 60 is completed, but then the sizing lever 28 is returned to the normal position by the short pin 6d, and then the long pin 6b on the drive gear 6 is moved to the repeat feed lever 33. Piece 33
The parallel cam 34 on the a side is pushed, thereby rotating the repeat feed lever 33 clockwise around the shaft rod 1γ, and the feed piece 38 rotatably attached to the other piece 33b side.
The projecting pin 39 is connected to the repeat feed plate 75 shown in FIG. 3 above.
The serrated cam 80 is folded once, and the repeat feed plate 75 is
move backwards.

In other words, it is like counting down the number of repeat memories.

At this time, the protrusion 20 of the main lever 18 enters the deep part of the cam groove 14, lowers the lifter plate, and lowers the tone arm 60.

At this point, the drive gear 6 also completes one rotation, and by bringing the center gear 1 toward the toothless portion 6a, it stops rotating, and only the turntable 53 rotates freely, allowing the player to play. Continue.

Note that the front part of the serrated cam 80 of the repeat feed plate 75 is continued by a long parallel cam 81, and the rear part is provided with a parallel cam 86 having the same height as the top of the serrated cam 80. Since it does not have serrations, in conjunction with the through holes 67, the repeat feed plate 75 is not moved when in the power off/lifter plate up mode and the infinite auto repeat mode.

Therefore, by indicating these movement amounts on the panel as the number of auto-repeat times, the user can arbitrarily select the number of auto-repeat times.

Furthermore, this repeat feed plate 75 is used for turning on and off the power as described above.
The off operation and lifting and lowering of the lifter can be performed arbitrarily, and therefore the above auto-repeat feed plate is configured according to the user's mode selection operation, so that it can be operated by the legitimate child of ■. This is an improvement in operability. This is a significant advance for

As described above, in the present invention, when the repeat feed plate 75 is pushed to the rearmost position, the power is turned off, and the lifter plate 69 is in the up mode, the guide cam 72 is in the state shown in FIG. The cam plate TO is on the mountain cam 72b, and the lifter plate 69 is pushed up to raise the tone arm 60, and the switch operating rod γ3 is separated from the operating plate 48b of the switch 48, so that the switch cannot be turned on. It is in.

That is, the motor 50 does not rotate and the turntable 55 is not driven.

Next, when the repeat feed plate 75 is pulled forward one step, the guide cam 72 is returned clockwise by the force of the spring 14, so that the cam plate 10
2b and land on a low flat part, and the lifter plate 6
9 descends, the tone arm 60 also descends, and manually,
The tone arm 60 can be operated to lead-in to any position on the disc.

At the same time, the switch operating rod 73 is operated by the switch 4.
Pushing in the actuating plate 48b of No. 8 and closing the switch,
The motor is rotated, the turntable is driven, and the turntable is ready for playing.

That is, in this state, the power is on, the lifter plate 69 is down, and each of the above-mentioned manual modes is formed.

In other words, to explain in a little more detail the process of switching from the power-off mode to the power-on and manual mode, in the power-off mode (also in the mode in which the lifter plate 69 is up), a predetermined position on the disk is moved. Just as you select the lead-in position to the band, the tone arm 60
manually onto the band, and then move the repeat feed plate 75 to the power-on mode (manual mode).
Then, as described above, the power is turned on, the turntable starts rotating, and the tone arm is lowered by the guide cam 72 to perform manual lead-in.

Here, when the repeat feed plate 75 is set to the above-mentioned power-on mode, during a period until the drive gear 6 (to be described later) starts to rotate, as shown in FIG. is locked by the protruding pin 41 of the repeat feed lever 33, so the hook portion 45 of the arm stopper 44 does not engage with the upright piece 24b of the tone arm operating plate 24, and the tone The arm can be rotated freely.

Therefore, it is also possible to manually lead in the tone arm 60 after operating the repeat feed plate 75 to the power-on mode, and in this case, the needle is manually lowered onto the rotating record disc. It turns out.

When the performance ends and the stylus is about to pass through the last band, the arm operating plate 24 associated with the tone arm 60 also rotates counterclockwise in FIG. Acting on the tip 9a of the second trip 9 attached to the gear 6 as described above, the second trip 9 is rotated clockwise about the support shaft 7, and the tip 9a of the first trip 8 is rotated clockwise. act to rotate the first trip 8 counterclockwise, and as described above, the pawl piece 10 engages with the pawl protrusion 3 to rotate the drive gear. The tone arm automatically operates to lead out and returns to the armrest 68.

By the way, when the drive gear 6 is rotationally driven,
As shown in FIG. 6, the long pin 6b is disengaged from the V-shaped cam 35 of the repeat feed lever 33 as a controlled mechanism, and the repeat feed lever 33 moves to the sixth position around the shaft rod 17 due to the rotation biasing force of the spring 40. Rotates counterclockwise in the figure,
The locking of the piece 44a of the arm stopper 44 by the projecting pin 41 is released.

Here, when the repeat feed plate 75 is located in the power-on mode, the protruding pin 4 of the arm stopper 44
6 is spaced apart from the valley cam surface 84 of the repeat feed plate 75, so when the lock is released, the arm stopper 44 is rotated clockwise in FIG. The protrusion pin 46 rotates and the valley cam surface 8
4.

In such a rotational position where the projecting pin 46 of the arm stopper 44 contacts the valley cam surface 84, the arm stopper 4
One piece 44a of 4 is in a state where it can lock the upright piece 24b of the tone arm operating plate 24, as shown by the imaginary line in FIG.

However, the solid line in FIG. 6 indicates a state in which the drive gear 6 has started to be rotated, and
When the tone arm actuating plate 24 rotates and the lead-out operation is completed, the tone arm actuating plate 24 returns to the position indicated by the imaginary line in FIG.

Therefore, at almost the end of this lead-out operation, the protrusion 20 of the main lever 18 reaches the folded part 142 of the cam groove 14, and the subsequent rotation of the drive gear 6 causes the main lever 18 to rotate counterclockwise. However, as is clear from the explanation of FIG. 6 above, the projecting pin 46 of the arm stopper 44
is in contact with the valley cam surface 84 of the reheat feed plate 15, the hook portion 45 is in contact with the upright piece 24 of the tone arm actuating plate 24.
Since the tone arm actuating plate 24 is locked, the counterclockwise rotation of the tone arm actuating plate 24 is restricted and the lead-in operation is prevented.

Furthermore, when the drive gear 6 is rotated, the long pin 6b presses the parallel cam 34 of the repeat feed lever 33, and when this lever 33 is rotated clockwise, the protrusion pin 39 of the repeat feed piece 38 is rotated. Serrated cam 8 on feed plate 15
0 is pressed to move the repeat feed plate 75 to the first position (power off mode position), and the switch 48 is turned off to rotate the guide cam 72 counterclockwise.

In other words, the presence of these two modes makes it possible to arbitrarily and correctly select a predetermined join-in position by checking the level or track number on the disc.

Furthermore, when the repeat feed plate 75 is pulled forward by one or more steps, the guide cam 72 is the same as in the second mode, the power is turned on, the lifter plate 69 is kept down, and the auto repeat is continued. Enter the mode.

In this auto-repeat mode, as described above, the protruding pin 46 of the arm stopper 44 is connected to the repeat feed plate 75.
It is formed by being moved by the parallel cam surface 83 from the valley cam surface 84 of.

In other words, by selecting the movement position of the repeat feed plate 75, it is possible to systematically and extremely easily perform operations such as turning the power on/off, switching the lifter plate up/down, manual operation, and switching the auto repeat operation. Ru.

As is clear from the above description, the present invention includes a drive gear that meshes appropriately with a center gear and is driven to rotate one rotation, and a lead-out operation of the tone arm and this lead-out operation by one rotation of the drive gear. In an auto player equipped with an auto mechanism that performs lead-in operations continuously, a mechanism for controlling the raising and lowering of the tone arm is provided separately from the mechanism for performing the lead-out and lead-in operations of the tone arm. , the repeat feed plate can take an off (up) position, an on (down) position, and a plurality of repeat number setting positions, and when the repeat feed plate is in the off (up) position, the tone arm is raised and lowered. When the tone arm is held in the raised position by the controlling mechanism, and the repeat feed plate is in the on (down) position and the plurality of repeat count setting positions, the mechanism that controls the raising and lowering of the tone arm holds the tone arm in the lowering position. The feed member rotatably biased by the repeat feed lever driven by the drive gear presses the serrated cam portion provided on the repeat feed plate during the lead-out operation of the auto mechanism. The repeat feed plate is moved one step, and the lead-in operation is prohibited by a prohibition mechanism that prohibits the lead-in operation by the auto mechanism when the repeat feed plate is in the on (down) position. It has one characteristic.

That is, the present invention has a configuration in which the repeat feed plate is moved a predetermined amount during the lead-out operation of the tone arm and the set number of repeat memory times is counted down. Manual operation is possible by controlling the mode from off and lifter plate up to power on and lifter plate down, and even during manual playback, the tone arm automatically returns when the playback is finished. Furthermore, at this time, it is possible to move the reheat feed plate to the power-off state in the manual mode and the lifter plate up state, allowing for extremely good operability and free mode selection.

[Brief explanation of the drawing]

FIG. 1 is a bottom view of a fully automatic player showing one embodiment of the present invention, viewed from the back of the player chassis;
The figure is a perspective view of the main parts of the above-mentioned player viewed from the upper part, which is the side on which the turntable is mounted, FIG. 3 is a plan view thereof, FIG. 4 is a perspective view of the main parts, and FIGS. FIG. 6 is a schematic bottom view of the main parts viewed from the back of the player chassis, showing different operating states. 1-...Center gear, 6...Drive gear 8.9...Trip, 15...
・Operation rod for start/reject, 18...
Main lever, 44...Arm stopper 48
...Switch for motor power supply control, 50...
...Motor, 60...Tone arm, 69.
...Tone arm lifter plate, 72...
Guide cam, 75...Repeat feed plate, 83...
...Parallel cam surface, 84...Tani cam surface.

Claims (1)

[Claims] 1. A drive gear which is driven to rotate one rotation by properly meshing with the center gear l, and a lead-out operation of the tone arm from one rotation f of this drive gear, and a lead-in operation following this lead-out operation. In an auto player equipped with an auto mechanism, a mechanism for controlling the elevation of the tone arm is provided separately from the mechanism for performing the lead-out and lead-in operations of the tone arm, and the repeat feed plate is turned off (up). position, on (down) position, and multiple repeat count setting positions, with the repeat feed plate above off (up)
When the tone arm is in the position f, the tone arm is held in the raised position by a mechanism that controls the raising and lowering of the tone arm, and when the repeat feed plate is in the on (down) position and the plurality of repeat number setting positions, the tone arm The mechanism for controlling the raising and lowering of the tone arm is configured to allow the tone arm to descend, and a feed member rotatably biased by the repeat feed lever driven by the drive gear f moves the repeat feed plate during the lead-out operation of the auto mechanism. The repeat feed plate is moved one step by pressing the serrated cam portion provided on the cam, and when the repeat feed plate is in the on (down) position, the lead-in operation by the auto mechanism is performed. An auto player which prohibits the lead-in operation by means of a prohibition mechanism.