JPS6142338B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pickup device for a record player, and more particularly to a pickup device of a linear tracking type suitable for a vertical record player.

In the conventional general linear tracking type pick-up device, the amount of rotation of the pick-up arm by tracing the record sound groove is detected by optical means, and the rotation fulcrum of the pick-up arm is set by the motor in accordance with this amount of rotation. There is a method in which the device is moved by the driving force of the device.

However, this type of structure tends to be complicated and expensive, and in order to make the pick-up move as close to a straight line as possible, it is necessary to precisely detect the amount of rotation of the pick-up arm. The pick-up arm requires the use of a long arm, which hinders miniaturization of the device. Furthermore, the related shortcomings include the need for a complicated device for the rapid forwarding and return mechanism of the pick-up arm.

Therefore, the present invention has been devised to eliminate the above-mentioned drawbacks of the conventional device, and to put it simply, the present invention enables the pick-up arm to be linearly slidable along a guide rail and rotatable to at least two positions. By providing a guide rail inclined at a predetermined angle toward the center of the record, during playback when the arm rotates to the first position, the feed of the pick-up arm is controlled by its own weight and the record sound groove. In addition, during fast forwarding and return, the pick-up arm is rotated to the second rotation position to disconnect it from the record and engage the belt that is driven as appropriate. The belt is used to drive the pick-up arm along the guide rail (fast-forward, return), and with this configuration, a complicated device for regenerating the pick-up, like the conventional device described above, can be used. In addition, since the inward force from tracing is partially used to feed the pick-up arm, the pick-up arm can be made shorter and smaller, and as a result, the device can be configured in a smaller size, and the pick-up arm can be moved quickly. The return mechanism also has a simple configuration.

Furthermore, the pickup device of the present invention provides a pickup device that has effects such as completely eliminating tracking errors because it moves in a perfect straight line.

Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in Figures 1 and 2, 1L is
LP record, 1E indicates EP record. This record player inserts the records 1L and 1E into the record insertion slot 3 provided in the player main body 2 in the state shown by the dashed line in FIG. This record player is of the type shown by the two-dot chain line in the figure) and is played in a vertical position.Furthermore, this record player is capable of playing back both sides of a record.

In Fig. 1, reference numeral 4 denotes an operation button, which is used to instruct the turntable, pickup, etc., to be described later, to load/unload a record, to play, to stop, etc., using a control circuit (not shown) (description is omitted). be. Reference numeral 5 denotes a record size switching knob, which is fixed to a switching lever 63 (described later), and can be switched according to the size of the performance record.
This is used to set the rotation speed of the turntable, the position of the record insertion guide, and the starting position of the pickup. Further, the player main body 2 is provided with a front display window 6 and a rear display window 7 in order to observe the state of the trace of the loaded record.

FIG. 3 is an overall view (partially omitted) showing the internal device of this player, and the device will be explained in detail below with reference to FIG. 3 and the following figures.

FIG. 4 is a perspective view showing the drive device for the record lifting mechanism, FIGS. 5 and 6 are front and side views showing the record lifting mechanism and the insertion slot guide mechanism, and FIG. 7 is a perspective view of the record holder. As shown in FIGS. 4 and 5, a rotary plate 9R and a support arm 10R are fixedly attached to a shaft 8R rotatably mounted on the back plate 2a of the player body, and are configured to rotate together. has been done.
Further, as shown in FIG. 4, a support plate 12 is attached to the shaft 11 fixed to the back plate 2a by an angle not shown.
is rotatably attached, and this support plate 12 rotatably supports a shaft 13, to which a rubber roller 13a and a worm gear 13b are fixed. A link 14 is attached to the back plate 2a by an angle (not shown) so as to be rotatable about a shaft 14a, and one end thereof is fixed to the shaft 13 of the support plate 12, and the other end is fixed to the back plate 2a. They are each rotatably fixed to the iron core 15a of the support arm starting plunger 15, and connect the two. The link 14 also has a spring 14 fixed at one end to the back plate.
b is always rotated in the direction of arrow B in FIG.
The rubber roller 13a is brought into pressure contact with the back surface 35b of the flywheel 35, which will be described later, only when 5 is OFF (the plunger is not energized) and when the turntable 29 is retracted, which will be described later. A reduction gear 16 is rotatably attached to the back plate 2a, and this large diameter portion 16
a has a small diameter portion 16b in the worm gear 13b.
is the gear portion 9 provided on the outer periphery of the rotary plate 9R.
a, respectively.

As shown in FIGS. 5 and 6, one end of the connecting arm 17 is rotatably attached to the rotating plate 9R.
The other end of the connecting arm 17 is rotatably attached to a rotary plate 9R fixed to a shaft 8L provided on the back plate 2a at a position symmetrical to the shaft 8R. A support arm 10L is also fixed to the shaft 8L symmetrically with the support arm 10R, and is configured to rotate together with the rotary plate 9L. Record holders 18R and 18L are fixed to these support arms 10R and 10L, as shown in FIGS. 5-7. As shown in FIG. 7, each of the record holders 18R and 18L has a first mounting section 18C that supports the record when it is lowered from insertion, a second mounting section 18b that supports the record when it is raised, and a second mounting section 18B that supports the record when it is raised. A moving slope 18c is formed continuously on the second mounting section 18b in order to move the record to the first mounting section 18a again.

With the above configuration, the rotation of the flywheel 35 is controlled by the rubber roller 13a, the shaft 13, and the worm gear 13.
b, the deceleration is transmitted to the rotary plate 9R via the reduction gear 16, and the connecting arm 17, the rotary plate 9L, and the shafts 8R, L
The left and right support arms 10R and 10L are operated via the recorder to perform a record lifting and lowering operation, which will be described later.

As shown in Figures 5 and 6, the left side plate 2 of the player body
A pin 19a is fixed to b, and a slide plate 19 is supported so as to be slidable in the vertical direction as shown in FIGS. 5 and 6 via an elongated hole 19e. This slide plate 19
One of the bent portions 19b is engaged with a pin 9La protruding from the rotating plate 9L through its elongated hole 19c, and is configured to slide as the rotating plate rotates. Also, the other bent portion 1 of the slide plate 19
9d is an engaging portion 20 at one end of the arm 20 rotatably supported by a pin 20a protruding from the left side plate 2b.
b. An insertion slot guide roller 21F, which serves as one of the guides when inserting a record, is rotatably attached to this arm 20 by a shaft 20c. Arm 20' rotatably attached by 'a'
Fixed. These arms 20, 20'
, the guide roller 21F is the arm 20, the left side plate 2
The slide plate 19 is rotated clockwise in the clockwise direction in FIG. 6 by a spring 20d attached between the ends of the slide plate 19 when the record is in the raised position shown in FIGS.
The shaft 21a is located in a position where its rotation is restricted by the bent portion 19d of the shaft 21a, and is fixed to the left and right side plates 2b and 2c.
A gap t ₁ equal to the thickness of the record 1 is formed between the record member and another insertion port guide roller 21R rotatably supported by the record member 1 to guide the insertion of the record. Further, pins 22, 22' protruding from the left and right side plates 2b, 2c are used to restrict rotation of the arms 20, 20' when a record is mounted, which will be described later.

With the above configuration, when the record is lowered, the slide plate 19 is slid by the rotation of the rotary plate 9L,
It releases the restriction on the arm 20 and acts to cut off the interference between the record and the guide roller 21 when the record is mounted and rotated, which will be described later.

Next, the record mounting mechanism and the record center guide mechanism will be explained with reference to FIG. 3 and FIGS. 8 to 11.

Figures 8 and 9 show the drive device of the record loading mechanism.
10 and 11 show the record pressing mechanism and the record center guide mechanism.

As shown in FIGS. 8 and 9, a support plate 23 is rotatably supported on a shaft 23d protruding from the back plate 2a. A drive shaft 24 having a threaded portion 24a in a part is rotatably attached to the support plate 23, and a rubber roller 25 that can be pressed against the inner surface of a flywheel 35, which will be described later, is fixed to one end of the drive shaft 24. A nut 26 is fitted into the threaded portion 24a so as to be movable on the shaft by the screwing action caused by the rotation of the drive shaft 24. A sliding bearing 27 is fixed approximately at the center of the back plate 2a. This sliding bearing is provided with a notch 27a,
A rotary bearing 28 is slidably supported, and a driven pin 28a protruding from the rotary bearing 28 is inserted into the notch 27a. Furthermore, the rotation bearing 28
A turntable shaft 30 having a turntable 29 fixed to one end thereof is rotatably supported while being prevented from coming off. A shaft 31a is also fixed to the back plate 2a at an angle, and a drive lever 31 is slidably supported on the shaft 31a through an elongated hole 31b. One end of this drive lever is connected to the nut 26 through a screw 31c, and the other end is connected to the driven pin 28a of the rotary bearing 28 through an elongated hole 31d.
Further, a plunger 32 is fixed to the back plate 2a, and an iron core 32a of the plunger 32 is connected to the support plate 23 by a connecting arm 33. Further, the support plate 23 is biased in the direction of arrow C in FIG. 8 by a spring 24 attached between it and the back plate 2a. Fig. 8 35 is formed integrally with a turntable 29 (not shown in Fig. 8), and is rotated by a pulley 36a and a belt 37 by a dual motor 36 capable of forward and reverse rotation as shown in Fig. 3. The driven flywheel is shown. Further, 35a is the inner surface of the flywheel.

With the above configuration, the rotation of the flywheel is transmitted to the drive shaft 24 by the rubber roller 25, and the drive lever 31 is rotated by the screwing action of the threaded portion 24a and the nut 26, and the rotation bearing 28 is transferred to the turntable shaft 30. , turntable 2
9. It is moved back and forth with respect to the sliding bearing 27 together with the flywheel 35 to perform record loading/unloading operations.

As shown in Figures 10-11, the turntable 2
9 is provided with a recess 29a, in which an EP adapter 38 is housed via a spring 38a.
An annular screw 39 prevents it from coming off. A rubber disc 40 is also attached to the turntable 29 and forms a record pressing surface 41. Further, the outer diameter of the turntable is made smaller than the label surface of the record.

A pressure bonding plate support 42 is fixed to the front plate 2d of the player main body 2. This crimping plate support base 42 has a notch 4 through which a crimping plate spring 45 (described later) passes.
2a, and a tapered surface 42c is continuously formed in the center hole 42b. Crimping plate 43
has its support shaft 43a fitted into the center hole 42b of the crimping plate support 42, and is prevented from coming off by a stopper 44. In addition, the support shaft 43a
is formed in such a thickness that it does not come into contact with the center hole 42b when the crimping plate 43 is positioned at the center. Further, the stopper 44 is formed with a tapered surface 44a having the same slope as the tapered surface 42c of the crimping plate support 42. The tip of the support shaft 43a of the crimping plate 43 is pressed by a crimping plate spring 45 whose one end is fixed to the front plate 2d. Due to the abutting action of the surfaces 42c and 44a, the center of the crimping plate and the center of the turntable shaft 30 are positioned to be the same. In addition, a rubber disc 46 for crimping the record is attached to the front of the crimping plate 43 to form another record crimping surface 47, and a rubber disc 46 for crimping the record is installed in the center to determine the center position of the crimping plate when the record is mounted. A center hole 43b that engages with the turntable shaft 30 is provided for this purpose. Furthermore, a recess 43c is provided in which an EP adapter is fitted when an EP record is installed. Further, the outer diameter of the pressure bonding plate is configured to be smaller than the label surface of the record.

With the above configuration, the records 1L and E are positioned at the mounting position by the record lifting mechanism,
The drive mechanism of the mounting mechanism advances the turntable shaft 30, turntable 29, etc., and the pressure plate spring 45 presses the record 1L, E.
, the crimp surface 41 of the turntable 29 and the crimp plate 4
7.

A conversion lever 48 and a record center guide plate 49 are each rotatably supported at one end by an angle on the front plate 2d. The tip bent portion 45a of the compression plate spring 45 is attached to the bent portion 48a of the conversion lever 48, and the center guide plate 49
The tip bent portions 48b of the conversion lever 48 are respectively engaged with the bent portions 49a of the converting lever 48, thereby connecting them. A record center guide wheel 50 is attached to each of the three bent portions 49b of the center guide plate 49 so as to be rotatable in the circumferential direction on a concentric circle.

With the above configuration, the center guide plate is placed in a forwardly inclined rotating position due to the bias of the crimping plate spring 45, and the guide wheel 50 slightly protrudes forward from the crimping surface 47 of the crimping plate 43. serves as a guide when the record is moved up and down by the record elevating mechanism, and when the turntable 29 rotates and moves forward and backward during the record device process, the records 1L and E are also rotated by the friction of the rubber disc 40. The records 1L and 1E are appropriately guided while moving backward by the deflection of the compression plate spring and the rotation of the conversion lever.

In addition, a crimping completion detection switch _S1 is installed on the front plate 2d.
is attached, and its actuator S _1a is positioned so as to be switched by rotation of the conversion lever 48. This crimping completion detection switch S ₁
is connected to a control circuit (not shown), and the rubber roller 25 is brought into pressure contact with the inner surface 35a of the flywheel by the suction of the plunger 32 shown in FIG. , E is the amount of deflection of the plate spring 45 that is securely attached to the crimping surfaces 41 and 47 of the turntable 29 and the crimping plate 43 (that is, the amount of deflection of the conversion lever 4
8), and the control circuit stops the suction of the plunger 32 and stops the forward movement of the turntable 29.

Next, according to figures 12 to 16, the pick-up mechanism,
The pickup fast forward mechanism and record size switching mechanism related to this will be explained.

During playback, the pick-up device of this player will
The pick-up arm moves down the slope under its own weight to follow the sound groove of the record, and during fast forwarding, the playback needle is moved away from the sound groove, causing a part of the pick-up arm to come into contact with a rubber belt that is driven to rotate as appropriate. It is of the form. In addition, the pickup device of this player is provided with two pairs of pickup devices symmetrically on the front and back so that the front and back sides of the record can be played back without changing the front and back sides.

As shown in FIGS. 3, 12, and 14, the right side plate 2c of the player body 2 (not shown in FIGS. 12 and 14) has a guide rail 51F that is slightly inclined so that it becomes lower toward the center of the turntable 29. It has been installed. On this guide rail 51F, a front regeneration pick-up arm 53F is placed by two rotatable pulleys 52F.
The inclination of the guide rail 51F is set so that during playback, the turntable 29 is moved toward the center on the guide rail 51F by the movement force toward the center of the turntable 29 due to its own weight and the inward force due to tracing of the record sound groove. There is.

The right side plate 2c (not shown in FIG. 12) also has an arm lift operation plate 54F rotatably supported at one end, and the other end is similarly supported by the front plate 2d by an angle not shown. There is. This operating plate 5
4F, an engaging portion 55Fa at one end of a link 55F rotatably attached to the right side plate 2c is engaged with the bent portion 54Fa. This link 55F
The other end is connected to the iron core 55Fa of the arm lifting plunger 56F fixed to the right side plate 2c, and is moved counterclockwise in FIG. 12 by a spring 55Fb attached between it and the right side plate 2c. It is energized. This results in link 55
F rotates the actuating plate 54F in the clockwise direction in FIG.
3F as shown in Figure 12a, guide rail 51F
Rotate the regeneration hand 5 clockwise around the center.
7Fa is separated from records 1V and E.
57F is a cartridge fixed to the tip of the pick-up arm. At the other end of the pick-up arm, a driven portion 53Fb is formed of a rubber material or the like and can be brought into pressure contact with a fast-forwarding rubber belt 6P, which will be described later. The front panel 2d is provided with a front display window 6 for observing the trace state on the front surface of the record. For this reason, several light bulbs 6a are provided at the rear of the display window to facilitate observation of the trace state.

As shown in FIGS. 3 and 15, an angle 58L is attached to the left side plate 2b, and a pickup fast-forward motor 59 is fixed to this angle. A pinion gear 59b attached to an output shaft 59a of this motor 59 meshes with a gear 60a rotatably attached to a shaft 58La protruding from an angle 58L, and a pulley 60L is integrally formed with this gear 60a. has been done. An angle 58R is fixed to the right side plate 2c, and a pulley 60R is rotatably supported on a shaft 58Ra protruding from the angle 58R. And these pulleys 60R, 6
A rubber belt 61 for quick-forwarding the pick-up is suspended on the 0L, and is appropriately driven by the motor 59. Further, driven portions 53Fb and 53Rb of pick-up arms 53F and 53R are configured to come into pressure contact with this belt 61.

FIG. 13 shows a pickup device for the rear side of a record and its display device.

The pick-up device for the rear side of the record is the same mechanism as the pick-up device for the front side of the record, which is symmetrically provided on the back side of the loaded record, and therefore a description thereof will be omitted.

As shown in the figure, a mirror 62a is provided at an angle (not shown) near the cartridge 57R of the rear pickup device. The configuration is such that the tracing state of 57R can be observed from the rear display window 7 through an optical path as indicated by arrow F. In addition, several light bulbs 7a are provided behind the mirror 62a for illumination.

FIG. 16 is a perspective view showing the record size switching mechanism, showing a state in which it is switched for LP records.

A switching lever 63 is slidably attached to the front plate 2d through a guide shaft 63a and a pin 63a' in the elongated hole _2d1 , and is always operated by a spring 64 attached to the pin 63a and the front plate. , both are energized at the sliding limit position. This switching lever 6
The bent portion 63b of No. 3 is positioned so as to come into contact with the side portion of the driven portion 53Fb (not shown in FIG. 16) of the front pickup arm 53F. Further, the guide shaft 63a protrudes below the insertion slot 3 when guiding the outer periphery of the record when inserting the record. Another bent portion 6 of the switching lever 63
3c, one end of a link 65 rotatably fixed to the top plate 2e of the player main body 2 is rotatably attached. The other end of the link 65 is rotatably connected to a bent portion 66a at one end of a sliding plate 66 that is slidably supported by the inner plate 2f of the player body 2. The sliding plate 66 has the aforementioned guide shaft 63.
A guide shaft 66b is protrudingly provided to guide the outer periphery of the record in cooperation with the guide shaft 66b. In addition, the bent portion 66c
Similar to the bending portion 63b of the switching lever 63,
Driven part 53 of rear pick-up arm 53R
It is positioned so that it can come into contact with the side of Rb.

These switching lever 63 and sliding plate 66 are switched to the EP record position and LP record position by operating the switching knob 5 fixedly attached to the switching lever 63, and the operating position of the outer circumferential guide and pick-up when inserting a record. In addition to regulation, the rotation speed of the motor 36 is changed by operating a changeover switch (not shown).

This player device is configured as described above.

Next, the operation of this player device will be explained.

First, the record mounting operation will be explained with reference to FIGS. 1 to 11. As shown in FIG. 1, when loading records, first insert the records 1L and 1E into the insertion slot 3. In this case, guide rollers 21F and 21 are provided in the thickness direction of the record as shown in FIGS.
R is a guide shaft 63a in FIG. 16 in the circumferential direction,
66b serves as an insertion guide. At this time, 3rd, 5a,
As shown in figures 6a and 7a, support arms 10R and 10
L is at the upper limit rotation position, and as shown in FIG. 7a, the record receivers 18R and 18L are oriented so that the movable slope 18c can support the record. Therefore, record 1L,
When E is placed on this slope, it moves along the slope as shown by arrow A and is supported at a position continuous with the placing portion 18a. This state is shown by the dashed line in FIG. 2.

From this state, by operating the operation button 4, the motor 36, plunger 15,
The record is loaded by operating the plunger 32 or the like.

When the record loading button of the operation buttons 4 is operated, the motor 36 starts rotating clockwise in FIG. 3 by a control circuit (not shown), and the pulleys 36a,
A flywheel 35 is driven in the same direction via a belt 37. Therefore, the rubber roller 13a, which is pressed against the back surface 35b of the flywheel 35 by the spring 14b, begins to rotate in the direction of arrow B, as shown in FIG. Therefore, this rotation is caused by the axis 13,
Worm gear 13b, gear part 16a, gear part 16
b, the deceleration is transmitted to the rotating plate 9R via the gear portion 9a, and the rotating plate 9R is rotated counterclockwise in FIG. 5a. Here, the rotation of the rotating plate 9R is transmitted to the left rotating plate 9L via the connecting arm 17,
Rotate this clockwise in the figure. The rotation of these left and right rotating plates 9R and 9L is based on each axis 8.
The support arms 10R and 10L are rotated through the support arms R and 8L so that the record holders 18R and 18L are lowered. Therefore, the records 1L and E placed on the record holders 18R and 18L are connected to the rotating plate 9, the connecting arm 17, and the supporting arm 1, as shown in FIG. 5b.
0, etc. is moved to the position shown by the solid line in the case of LP record 1L, and to the position shown by the one-dot chain line in the case of EP record 1E, and is lowered to the position shown by the two-dot chain line, where the arm rotation position (not shown) is detected. By the means, the plunger 15 shown in FIG. 4 is energized to rotate the support plate 12 via the link 14,
By separating the rubber roller 13a from the flywheel back surface 35b, the lowering operation of the records 1E and L is stopped, and the positioning of the records (that is, the position where the center of the record and the turntable shaft 30 are on the same line) is completed. (The plunger 15 moves forward after the turntable, which will be described later, moves forward.
Note that the rotation position of the support arm 10 is selected here by the record size switching lever 63 shown in FIGS. 3 and 16 and a control circuit not shown.

Simultaneously with the lowering of the record 1, the front guide roller 21F is moved to the release position by the rotation of the rotating plate 9L. That is, in FIG. 5a, the rotating plate 9L
When the pin 90a rotates clockwise, the elongated hole 1 is inserted into the pin 90a.
A slide plate 19c connected via 9c slides upward. For this reason, the spring 20 is always
(Clockwise direction in Figure 6a)
The arm 20, which has been rotationally energized in the direction shown in FIG. Move to the regulated position. Due to this release operation, during the record crimping operation described later,
As shown in FIG. 6b, even when the record 1 moves forward and rotates at the mounting position, it is prevented from interfering with these guide rollers 21.

Next, of the record mounting operation, the pressing operation by moving the turntable forward will be explained.

The record 1 is lowered to the mounting position, and the plunger 15 is detected by the support arm rotation position detection means described above.
is turned on and the record stops descending, the plunger 3 shown in Fig. 8 is activated by a control circuit (not shown).
2 is energized and the support plate 23 is connected via the connecting arm 33.
is rotated about the shaft 23a in the direction of arrow C' in the figure against the spring 34. For this reason, the rubber roller 25 is attached to the flywheel inner surface 3.
5a, and is thereby rotationally driven in the direction of arrow C. Therefore, in the state shown in FIG. 9a, the threaded portion 24a formed coaxially with the rubber roller 25
The nut 26 moves rightward on the shaft 24 by the screwing action of the nut 26 fitted thereto. Therefore, the drive lever 3 connected to the nut 26
1 rotates clockwise in the figure around a shaft 31a, and a rotary bearing 28 that engages a driven pin in its elongated hole 31d is connected to a turntable shaft 30, a turntable 29, and a flywheel 35.
At the same time, it moves to the left in the sliding bearing in the same figure, resulting in the state shown in FIG. 9b.

The record is loaded by forward movement of the turntable 29 and the like. This will be explained below with reference to FIGS. 10-11 and FIGS. 6b and 7.

As shown in FIG. 10a, the records 1L and E positioned by the above-mentioned record lifting mechanism are in the state shown in the figure, and the front surface of the records 1L and 1E is in the state shown in the figure. It is in contact with the solid guide hole 50 of the center guide plate 49 in the forward tilted rotation position, and the rear surface is in contact with the support arm 1.
0R, L (not shown in FIG. 10), etc., so as not to rattle back and forth. In this state, when the turntable 29 moves forward together with the turntable shaft 30 by the aforementioned turntable forward drive means, the EP adapter 38 is fitted into the center hole 1Ea of the EP record 1E, as shown in FIG. 10b. At the same time, the central shaft 43a is pressed by the crimping leaf spring 45, and the tapered surface 44a of the stopper 44 and the tapered surface 42 of the crimping plate support 42
The center position was determined by the action of c. The turntable shaft 30 and the EP adapter 38 are fitted into the center hole 43b and the recess 43c of the crimping plate 43, respectively. And record 1E
is held between a crimping surface 41 formed by a rubber plate 40 on the turntable 29 and a crimping surface 47 formed by a rubber plate 46 on the crimping plate 43 . Furthermore, the pressure force for holding this record is obtained. Therefore, turntable 29 is set to record 1.
E, move forward slightly together with the crimping plate 43 while bending the crimping plate spring 45. Due to this forward movement, the record 1E first moves in the direction of arrow D, as shown in FIGS. The record receiver 18 and the supporting arm 10 are prevented from interfering with each other by taking a floating position above the mounting portion 18b. Further, as shown in FIG. 10a, the crimping plate 43 normally abuts and engages the support base 4 with the tapered surface 44a of the stopper 44, which positions the sensor by urging the crimping plate spring.
Since the engagement with the tapered surface 42c of 2 is cut off, as shown in FIG. 10b, interference with any fixing means other than the contact between the central axis 43a and the pressure-bonding leaf spring 45 is cut off. Note that the center positioning of the crimping plate at this time is performed using the turntable shaft 30 and the center hole 43b.
This is done by mating with the In addition, the crimp plate spring 4
Due to the bending of 5, the bent portion 4 is formed at the bent portion 45a.
Conversion lever 48 connected by 8a, 10th
Rotate clockwise in figure a. Furthermore, the bent portion 48b is connected to the bent portion 49a by a bent portion 49a.
The center guide arm 49 rotates counterclockwise in the figure. This center guide arm 49
Since the rotation is magnified by the conversion lever 48, the amount of deflection of the crimp leaf spring 45, that is,
This is larger than the amount of retraction of the crimping plate 43, and the guide wheel 50, which was guiding the record when not crimped, is separated from the record 1 as shown in FIG. 10b. The above-described record crimping operation is performed by detecting the magnitude of the crimping force, that is, the amount of deflection of the crimping leaf spring 45, by a crimping completion detection switch _S1 configured to change over the conversion lever 48, and by a control circuit (not shown). Then, the above-mentioned plunger 32 is turned off to complete the process.

When installing the LP record 1L, as shown in Fig. 10c, the EP adapter 38 contacts the record 1L and sinks into the turntable against the spring 38a, and the turntable shaft 30 is fitted into the record center hole 1La. The other operations are the same as those for the EP record 1E described above.

When the installation operation is completed as described above, the motor 3
6 stops, the flywheel 35 also stops, and the player enters a standby state. Further, the rotating means of the turntable shaft 30, the turntable 29, the record 1, the crimping plate 43, etc. are only in contact with the bearing 28 of the turntable shaft 30 and the crimping leaf spring 43a, Mouth guide roller 21, center guide wheel 50, record holder 18, support arm 1
0, the crimping plate support stand 42, etc., the state is such that there is no interference at all.

Next, the record size switching mechanism and pickup mechanism will be explained with reference to FIGS. 12 to 16.

As mentioned above, this player is equipped with a pick-up device on each of the front and rear sides so that the front and rear sides of the record held can be played back without having to reinstall the record.
Stop switching, fast forwarding of the pick-up arm,
These operations are performed by appropriately operating the plungers 56F, 56R, motor 59, and motor 36 using the operation button 4 and a control circuit (not shown).

First, when regenerating the front surface, a control circuit (not shown) operates the flywheel 3 by the motor 36.
5. The turntable 29 rotates clockwise in FIG. 3 at a rotational speed set by a record size switching mechanism, which will be described later, to drive the record 1. Then, in the state shown in Fig. 12, the plunger 56F is energized by a control circuit (not shown), and the ON operation of this 56F causes the link 55F to rotate clockwise in the drawing against the bias of the spring 55Fb. do. Further, the actuating plate 54F, which engages the bent portion 54Fa with the engaging portion 55Fa of the link 55F, rotates counterclockwise in the figure. Therefore, the sliding wheel 53Fa is normally pressed against the actuating plate 54F via the link 55F by the bias of the spring 55Fb, and the reproducing needle 57Fa is moved clockwise in the figure centering on the guide rail 51F. It was rotating against its own weight, moving away from 1. The pick-up arm 53F rotates clockwise in the figure due to its own weight, and the regenerating needle 57 is rotated by an appropriately set needle pressure.
Fa is placed on the sound groove of the record 1 which is rotating at an appropriately set rotation speed. (The state shown in Fig. 12) Then, the guide rail 51F is moved to the center of the record 1 by the moving force due to its own weight generated by the inclination of the guide rail 51F toward the center of the turntable 29, and the inward force caused by tracing the sound groove of the record 1. While moving to , trace the front of record 1.

With the above operation, the front cartridge 57F
The front side of the record 1 is played back through a playback circuit (not shown) electrically connected to.

To reproduce the rear side of the record 1, a control circuit (not shown) rotates the motor 36 in the counterclockwise direction in FIG. This is done by energizing the plunger 56R shown in the figure. By this energization, the same operation as that of the front-side playback pickup described above results in the playback state shown in FIG.
The rear side of record 1 is played back. FIG. 14 shows a perspective view of the pickup device in a reproducing state.

When fast-forwarding these pickups, turn off the power to the plunger 56 that is in the reproducing state so that it is in the stopped state shown in FIG. 12a, and then move the motor 59 of the fast-forwarding device shown in FIG. 15 in the appropriate direction. All you have to do is drive it. Below, the front and rear surfaces will be explained.

When the plunger 56 is de-energized in the regeneration state shown in FIG. 12b or FIG. 13, the link 55 and the actuating plate 54 are rotated to the stopped state shown in FIG. 12a due to the bias of the spring 55b, and then , the pick-up arm 53 has its sliding wheel 53
Since a is pressed by the actuating plate, it rotates around the guide rail 51, and its driven portion 53b is pressed against the rubber belt 61. This state is the same as the stopped state. A control circuit (not shown) controls the first
A motor 59 shown in FIG. 5 rotates in a direction determined by the operation button 4 as appropriate. Therefore, the rotation of the motor 59 rotates the rubber belt 61 in an appropriate direction via the gear 59b, the gear 60a, and the pulley 60L. Therefore, the pick-up arm 5 whose driven portion 53b is in pressure contact with the rubber belt 61
3 is driven in an appropriate direction on the guide rail by its frictional force, regardless of its own weight. The fast-forward movement of the pick-up arm is regulated by an angle (not shown) so that the playback needle 57a stops at the innermost position of the record sound groove in the direction toward the center of the turntable, and in the other direction, as will be described later. It is regulated by the record size switching mechanism.

Next, the record size switching mechanism will be explained with reference to FIG.

Figure 16 shows the state switched for LP records. A changeover switch means (not shown) inserted into a control circuit (not shown) is connected to the changeover lever 63 in order to control the rotational speed of the turntable drive motor 36, the rotational position of the record support arm 10, etc. In the LP state shown in the figure, the guide shaft 63a of the switching lever 63 and the guide shaft 66b of the sliding plate 66 operate when inserting the record as described above.
The spacing is set to guide (position) the outer circumference of the LP record. In addition, the switching lever 6
3 bent portion 63b and sliding plate 66 bent portion 66c
As shown in the figure, these can come into contact with the side surface of the driven portion 53Fb of the front pickup 53F and the side surface of the driven portion 53Rb of the rear pickup 53R, respectively, and the movement of these pickups 53 is controlled by the regeneration needle. 57a is regulated at a position where it is placed on the outermost circumference of the LP record 1L sound groove.

Next, a case will be described in which the switching knob 5 is operated in the direction of arrow E to switch the mechanism to one for EP records. When the switching knob 5 is operated in the direction of arrow E, the switching lever 63 slides in the same direction, and the spring 64
is held in the EP position by Further link 6
5 rotates, and the sliding plate 65 slides in the direction of arrow E. As a result, the guide shafts 63a and 66b are
Leave enough space to guide the outer circumference of the EP record when inserting it. Further, by sliding the lever 63 to the EP position, the aforementioned changeover switch means is switched to the EP position. Furthermore, the bent portions 63b, 66c
The movement of the pick-up 53 is controlled by the playback needle 57.
a is positioned so as to be restricted to a position where it is placed on the outer periphery of the sound groove of the EP record 1E.

The above is the operation of the record size switching mechanism.

Next, the record loading/unloading operation will be explained.

When loading/unloading the record 1, in the state shown in FIGS. 10b and 10c, a control circuit (not shown) is actuated by the record loading/unloading button of the operation buttons 4, and the motor 36 is rotated in the counterclockwise direction in FIG. At the same time, the plunger 32 and the plunger 15 shown in FIG.
is energized and the plunger 32 is energized,
As in the case of mounting, the rubber roller 25 comes into pressure contact with the inner surface 35a of the flywheel, thereby rotationally driving the shaft 24. The rotation of this shaft 24 is opposite to that when installed.
The turntable longitudinal drive mechanism, which was in the C' direction and therefore in the state shown in FIG. 9b, moves to the state shown in FIG. 9a by the screw action of the nut 26 and the threaded portion 24a. Therefore, the turntable shaft 30,
The turntable 29 and the like move back from the state shown in FIGS. 10b and 10c to the state shown in FIG. The center position is determined by engagement with the tapered surface 42c,
Similarly, the center guide plate 49 assumes the same forward tilted rotational position as in the non-pressure state by the urging of the pressure-bonding leaf spring 45, and brings its guide wheel into contact with the record 1. On the other hand, the record 1 disengages its center hole 1a from the turntable shaft 30 or the EP adapter 38, and from the crimping surface 41 of the turntable 29 and the crimping surface 47 of the crimping plate 43, and becomes free. Therefore, it fell slightly due to its own weight, and the left and right record holder 1 shown in Figure 7b
It is placed on the No. 8 placing section 18b. As described above, when the record 1 is disconnected from the turntable 29 and the crimping plate, the retracted position of the turntable is detected by the detection mechanism (not shown), and the plunger 32 is activated.
When the switch is turned off, the retracting operation of the turntable 29 is completed, and the apparatus enters the state shown in FIGS. 9a and 10a.

When the backward movement of the turntable is completed, the plunger 15 shown in FIG. 4 is turned off by a control circuit (not shown). This plunger 15
OFF, the rubber roller 13a comes into pressure contact with the back surface 35b of the flywheel 35 due to the bias of the spring 14b, and the shaft 13 is rotationally driven. This rotation of the shaft 13 is in the opposite direction to that when the record is lowered, and therefore, the record lifting mechanism in the state shown in FIG. In order to insert the record 1 supported above, the support arm 10 is moved to the state shown in FIG. 5a.

When the support arm 10 rotates upward, the record 1 placed on the record holder 18 is moved to the seventh position.
The record tray 18 is moved from the second mounting portion 18b of the record tray 18 in the lowered position shown in FIG. 7A to the moving slope 18c of the record tray 18 in the raised position shown in FIG. Therefore, the record 1 moves on the moving slope 18c by its own weight as shown by arrow A to a position continuous with the first placing section 18a, and when the next record is loaded, the record is placed on the first placing section 18a. It moves on the placement part 18a and takes a preparation state for center positioning.

On the other hand, in the operation of the record lifting mechanism, the rotary plate 9
The counterclockwise rotation of L in FIG. 5b causes the slide plate 19 to slide downward in the same figure. For this reason, during the record device, the arm 20 that moves the guide roller 21F forward so as not to interfere with the rotation of the record has its engagement portion 2
0b is engaged with and pressed by the bent portion 19d of the slide plate 19, the guide rotates against the spring 20d from the state shown in FIG. 6b to the state shown in FIG. 6a to guide the record 1. Roller 21F, 2
A gap t ₁ equivalent to the thickness of the record is formed between 1R.

When the record lifting mechanism and the insertion slot guide mechanism operate as described above, the plunger 15 is turned on by the support arm rotation position detection means (not shown).
At the same time, motor 36 stops. Note that the motor 36
stops, and when the flywheel 35 stops, the power to the plunger 15 is turned off, and the rubber roller 1
3a comes into pressure contact with the flywheel rear surface 35b again by the bias of the spring 14b, and the record is ready for mounting the next record.

With the above operations, records 1L and E become the second
It rises from the state shown by the two-dot chain line shown in the figure, and assumes the state shown by the one-dot chain line. From this state, the record can be replaced or loaded again by the above-described operation.

[Brief explanation of the drawing]

The drawings show a player device according to an embodiment of the present invention, and FIG. 1 is an external view thereof, FIG. 2 is a front view of the player device showing the record insertion and insertion position, and FIG.
The figure is a perspective view of the drive mechanism of the record lifting mechanism.
The figure is a perspective view showing the drive mechanism of the record elevating mechanism, FIG. 5 is a front view of main parts showing the record elevating mechanism and the insertion slot guide mechanism, FIG. 6 is a side view of each mechanism in FIG. 5, and FIG. The figure is a perspective view showing the operation of the record holder related to the above mechanism, FIG. 8 is a perspective view showing the turntable front and back drive mechanism related to the above mechanism, and FIG.
8 is a partially sectional side view of the mechanism shown in FIG. 8, FIG. 10 is a sectional view showing the operation of the record crimping mechanism, FIG. 11 is an exploded perspective view of the mechanism shown in FIG. 10, and FIG. 12 is a front playback pick-up. 13 is a side view of the pick-up mechanism for rear playback; FIG. 14 is a perspective view of the main part showing the pick-up mechanism; FIG. 15 is a perspective view of the main part showing the pick-up fast forwarding device;
FIG. 6 is a perspective view showing the record size switching mechanism.

Claims (1)

[Claims] 1. In a pick-up device for a vertical record player that plays a record by holding the record in a vertically aligned state, there is a guide rail that is tilted in a direction toward the center of the record's surface. , is supported so as to be slidable along the guide rail, and is rotatable so as to be able to assume at least a first rotation position and a second rotation position by using the guide rail as a rotation axis. and a drive mechanism that contributes to sliding of the pick-up arm, and when the pick-up arm is in a first rotating position, it is in a reproducing state, and when the pick-up arm is in a second rotation position, the pick-up arm is in a reproducing state. A pickup device for a vertical record player, characterized in that the pickup arm is configured to be slidable by the drive mechanism when in the rotation position.