JPS644241B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a record player configured to ensure reliable operation control of an automatic mechanism using a single solenoid.

The present invention will be described below with reference to drawings of embodiments.

FIG. 1 shows an embodiment of the record player of the present invention.

In the figure, reference numeral 1 denotes a solenoid that serves both as a start and a stop, and is provided with a suction plate 2 and a spring 3 that biases the suction plate 2 in a direction opposite to the suction direction. Reference numeral 4 designates a stop plate whose operation is controlled in response to the suction operation of the solenoid 1, and is operated by a spring 7 suspended between a pin 5 provided on the stop plate and a hook 6 provided on the chassis. spring biased in the direction. The stop plate 4 is provided with an actuating pin 8 and an actuating piece 9 made of rubber in addition to the locking stepped portion 4a of the suction plate 2. 10 is the stop plate 4 mentioned above.
This is a switch lever whose operation is controlled by an operating pin 8 provided on the chassis, and is rotatably supported on a support shaft 11 provided on the chassis. The switch lever 10 is provided with a first arm 10a that engages with the operating pin 8 of the stop plate 4, as well as second and third arms 10b and 10c. Reference numeral 12 denotes a motor switch whose operation is controlled by the second arm 10b of the switch lever 10, and connects and disconnects power to a motor (not shown). 13 is a small gear provided on the main shaft 14 of the motor;
A turntable (not shown) is also provided. Reference numeral 15 denotes a starting plate whose operation is controlled by the operating piece 9 of the stop plate 4, and is rotatably supported by a support shaft 16 provided on the chassis. The activation plate 15 includes a pin 17 against which the actuation piece 9 of the stop plate 4 comes into contact, as well as a first arm 15a for activating an activation member (described later), and a first arm 15a for sensing the movement of a pick-up arm device (described later). It is provided with two arms 15b. 18 is a main gear in which a starting link 19 and a friction link 20 as starting members are rotatably supported on a support shaft 21;
It is rotatably supported by a support shaft 22 provided on the chassis. The main gear 18 includes the small gear 1.
A cutout portion 18a is provided at a location corresponding to No. 3, and the cutout portion 18a faces the small gear 13 when the main gear 18 is stopped rotating. Reference numeral 23 denotes a drive plate that moves linearly in response to the rotational movement of the main gear 18, and the main gear 1 is attached to the tip of the drive plate.
It has a pin 24 that is engaged with a heart cam groove (not shown) provided at 8, and a linear cam 25 for lifting at the other end. The drive plate 23 is supported so as to be linearly movable by inserting an elongated hole 23b into a support shaft 80 provided on the chassis. A pick-up arm device 27 is mounted on a cabinet (not shown), and its rotating shaft portion 28 is provided with a pick fixing plate 29 and a pick movable plate 30. 31
is the second arm 10b of the switch lever 10.
The switch control piece is rotatably supported on a support shaft 32, and a protruding piece 33 provided on the chassis is inserted into a deformable hole 31a provided in the center of the switch control piece, and its rotation range is regulated. The switch control piece 31 is also provided with a groove 31b into which a switch control pin 34 provided on the pick fixing plate 29 is inserted.
Reference numeral 35 designates an index plate which is rotatably supported on a support shaft 80 that supports the drive plate 23 so as to be capable of linear movement;
It has a pin 36 to be inserted into the deformation hole 23a provided in the record size, and also has locking steps 35a, 35b, and 35c against which the protrusion 30a of the pick movable plate 30 comes into contact for setting the record size. ing. As shown in FIG. 3, the index plate 35 is connected to a record size setting knob 38 provided on the cabinet by a flexible wire 37 hooked onto a pin 39 provided on the cabinet.
Its rotation range is regulated. The above record size setting knob 38 is not shown, but it is 30cm,
It is configured to be slid and operated with a click mechanism for locking at each record size position of 25 cm and 17 cm. 40 is a repeat claw provided on the drive plate 23, and a spindle 4 provided at one end thereof.
1 is inserted into the elongated hole 23c of the drive plate 23 and is supported so as to be capable of linear movement and rotary movement. The repeat claw 40 is connected to the drive plate 23.
The projecting piece 40b provided thereon is biased by a spring 42 suspended between the deformed hole 23a.
It is inserted inside to restrict rotation. In addition to the repeat pawl 40, a deformed pawl 23 provided on the drive plate 23
a pin 43 inserted into the index plate 35 and a protruding piece 40a that comes into contact with the pin 36 of the index plate 35;
It is equipped with A memory repeat wheel 44 is operated by the repeat pawl 40, and is rotatably supported by a support shaft 45 provided on the chassis. The memory repeat wheel 44 includes a pawl tooth portion 46 and a cam portion 47 with which the repeat pawl 40 comes into contact. And the above memory repeat car 44
As shown in FIG. 3, a flexible wire 51 is suspended between the drum portion 48 and rollers 49, 50 provided on the cabinet, and is connected to a repeat knob 52 provided on the flexible wire 51. Crimp terminals 53a, 53b are provided in the middle of the flexible wire 51, and a spring 54 suspended between the crimp terminals 53a, 53b
The wire portion 51a between the wires 51 and 51 is slackened.
gives appropriate tension to. Although the memory repeat wheel 44 is not shown, a click operation corresponding to each pitch of the pawl tooth portion 46 is provided between the memory repeat wheel 44 and the chassis, and the repeat knob 52
Moderation is given to the feeding operation for each pitch.

As shown in FIG. 2, a detection plate 55 having a pin 61 that comes into contact with the cam portion 47 of the other memory repeat wheel 44 is rotatably supported on the support shaft 11 that supports the switch lever 10. The detection plate 55 is provided with a detection escape plate 58 which is rotatably supported by a support shaft 56 and abuts an operating pin 57 provided on the lift cam 25. Also,
The detection plate 55 is also provided with a detection auxiliary plate 60 rotatably supported by a support shaft 59. The detection relief plate 58 is biased by a spring 62 suspended between the detection plate 55 and the detection plate 55.
The detection auxiliary plate 60 is biased by a spring 63 suspended between it and the detection plate 55, and is brought into contact with a protrusion 64 provided on the switch control piece 31.
The drive plate 23 is provided with a movable piece 67 that is supported by a support shaft 65 and clicked by a leaf spring 66.

In this configuration, when the start/stop switch (not shown) is pressed from the stopped state shown in FIG. 1, the solenoid 1 attracts the suction plate 3 against the biasing force of the spring 3. The suction plate 3 is removed from the locking step 4a of the stop plate 4 to release the locking state of the stop plate 4. Then, the stop plate 4 slides in the direction of the arrow A shown in the figure by the biasing force of the spring 7, and the operating pin 8 rotates the switch lever 10 in the direction of the arrow B shown in the figure, so that the second arm 10 of the switch lever 10 is rotated.
At step b, the operation button 12a of the motor switch 12 is pressed in the direction of arrow C in the figure. Therefore, the motor is energized by the motor switch 12, and the rotational force of the motor causes the motor main shaft 14 to be energized.
rotates in the direction of arrow D in the figure, and at the same time the turntable and small gear 13 begin to rotate. on the other hand,
At the same time as the switch lever 10 rotates, the actuating piece 9 of the stop plate 4 engages the pin 1 of the starting plate 15.
7, the activation plate 15 rotates in the direction of the arrow E in the figure, and the first arm 15a rotates the activation link 19 and the friction link 20 provided on the main gear 18 in the direction of the arrow F in the figure. Become. Therefore, the starting link 19 is pushed by the pawl 13a of the small gear 13, and the main gear 1
8 rotates in the direction of arrow G in the figure, and the main gear 1
After the small gear 13 is engaged with the main gear 8, the main gear 18 receives the rotational force of the motor via the small gear 13 and rotates.

When the main gear 18 rotates in the direction of arrow G in the figure due to the above-mentioned starting action, the main gear 1
The drive plate 23 connected to the heart cam groove of No. 8 is the fourth
As shown in the figure, the lift cam 25 slides in the direction of the arrow H in the figure, and the lift cam 25 provided integrally with the
move in the direction Therefore, the lift 26 associated with the wire passing movement of the lift cam 25 is pushed upward as shown in FIG. 11, thereby raising the tone arm 27a of the pick-up arm device 27. On the other hand, in response to the sliding movement of the drive plate 23 in the direction of arrow H in the figure, the drive plate 2
3 is brought into contact with the activation plate 15, the activation plate 15 is returned in the direction of arrow I as shown in FIG. Then, in response to the returning movement of the activation plate 15, the operation of the activation link 19 by the activation plate 15 is released, and the stop plate 4 is returned to its original state while biasing the spring 7. During the return operation of the stop plate 4, the solenoid 1 is de-energized, so the suction plate 2 is biased by the spring 3 and engaged with the locking step 4a of the stop plate 4. When fitted together, the stop plate 4 is locked in a spring biased state. Further, in response to the sliding movement of the drive plate 23 in the direction of the arrow H in the figure, the operating pin 57 provided on the lift cam 25 moves the detection escape plate 58 and the detection plate 55 in the direction of the arrow J in the figure as shown in FIG. However, in this case, since the switch control pin 34 of the pick-up fixing plate 29 provided on the pick-up arm device 27 is in the recess 31b of the switch control piece 31, the protrusion 64 of the switch control piece 31 A detection auxiliary plate 60 that is pivotally supported by the detection plate 55 comes into contact with the detection plate 55 to prevent rotational movement of the detection plate 55 in the direction of arrow J in the figure.
7 is brought into contact with the detection plate 55. The moving piece 67 is rotated in the direction of the arrow K by the sliding movement of the driving plate 23 in the direction of the arrow H, and as shown in FIG. The above-mentioned pick movable plate 30 is in between.
Insert the moving pin 69 provided in the plate spring 66.
It is held with the urging force of. When the detection auxiliary plate 60 is in contact with the protruding piece 64 of the switch control piece 31, side pressure is applied to the switch control pin 34 of the pick fixing plate 29 to pick up the pick-up arm device 2.
7 from jumping out, and also, while the lift 26 is rising, a brake piece (not shown) is brought into contact with the pick fixing plate 29 to smoothly rotate the pick up arm device 27 from the rest position. I'm letting them do it.

When the repeat pawl 40 provided on the drive plate 23 moves in the direction of arrow H in the figure at the same time as the drive plate 23 in synchronization with the upward movement of the above-mentioned pick-up arm device, the pin of the index plate 35 is moved by the protrusion 40a. 36 is pressed, the index plate 35 rotates in the direction of arrow L as shown in FIG. 3, and is stopped at the position determined by the record size setting knob 38. in this case,
A wire 3 is suspended between the index plate 35 and the record size setting knob 38.
Rotate 7 until it becomes taut and then stop. The main gear 18 further rotates and the drive plate 23
When the slider slides in the direction of arrow M as shown in FIG. , the pick-up arm device 27 rotates in the direction of arrow N in the figure. Then, the protruding piece 30a of the pick movable plate 30 of the pick-up arm device 27 comes into contact with one of the locking step portions 35a to 35c for setting the record size of the index plate 35, and the rotation of the pick-up arm device 27 moves. The operation is stopped. In other words, when the record size setting knob 38 is at the 30cm record position, the pick-up arm device 27 is attached to the locking step 35c.
When in the cm record position, the locking step 35b
, when the 17cm record is in the position, the locking step 3
The pick movable plate 30 rotates until it comes into contact with the pick 5a. When the drive plate 23 is further moved in the direction of arrow M, the movable piece 67 rotates in the direction of arrow O to come into contact with a stopper piece (not shown), and moves out of the rotational trajectory of the movable pin 69. do. In response to the rotational movement of the pick up arm device 27 in the direction of the arrow N shown in the figure, the pick fixing plate 29 also rotates in the direction of the arrow N shown in the figure, and the switch control pin 34 of the pick fixing plate 29 31 is held in the state shown in FIG. 5 by the protruding piece 33 on the switch control piece 31 in order to move it in the direction of arrow P in the figure. The motor switch 12 is maintained in the closed state because the switch control piece 31 pulls the switch lever 10 in the direction of arrow P in the figure.

Further, as shown in FIG. 3, the index plate 35 is rotated by the drive plate 23 in the direction of the arrow Q shown in the figure, and is moved out of the rotation locus of the movable pick plate 30. Therefore, the lift 26 is lowered by the lift cam 25 of the drive plate 23, and the pick-up arm device 27 is lowered, and the tip of the pick-up arm device 27 is lowered onto the record disc on the turntable, and the switch control pin 34 is lowered. comes off from the switch control piece 31 and becomes free. And main gear 18
The gear is set and stopped at a position corresponding to the small gear 13, and the playing state is started.

As the above-mentioned record playing state progresses and the pick-up arm device 27 moves far into the inner periphery, the second projecting piece 30 of the pick movable plate 30
In order to push the second arm 15b of the activation plate 15 in the direction of the arrow R shown in FIG.
is pushed in the direction of arrow F in the figure, and the activation link 19 disposed on this friction link 20 is also pushed in the direction of arrow F in the figure. In other words, when the amount of movement of the pick-up arm device is small in the sound groove of the record, the starting link 19 is pushed by the rear part of the pawl 13a of the small gear 13 and becomes misaligned with the friction link 20. The starting link 19 moves largely in the rough groove pitch. Therefore, the starting link 19 is connected to the small gear 1.
The drive plate 23 is pushed by the claw 13a of No. 3 and rotates in the direction of the arrow G in the figure, and slides in the direction of the arrow H in the figure in order to engage the main gear 18 and the small gear 13. When the drive plate 23 slides in the direction of arrow H in the figure, the lift cam 25 moves the lift 2
6 to pull the tip of the pick-up arm device 27 away from the record disc, and return the activation plate 15 in the direction of arrow I shown in the figure. Lift cam 2 above
During the slide transition in the direction of arrow H shown in Fig. 5, pin 5
7 comes into contact with the detection plate 55, the detection plate 55
rotates in the direction of arrow J shown in the figure. In this case, the switch control pin 34 is inserted into the concave groove 31 of the switch control piece 31.
b, the detection auxiliary plate 60 of the detection plate 55 does not touch the protrusion 64 of the switch control piece 31. When the driving plate 23 further slides in the direction of the arrow H in the figure, the moving pin 69 is pushed by the engaging portion 25a of the lift cam 25, so that the pick-up arm device 27 rotates in the direction of the arrow S in the figure as shown in FIG. , and is returned to the rest position. At this time, since the switch control pin 34 enters into the concave groove 31b of the switch control piece 31, the switch control piece 31 is rotated in the direction of arrow T as shown in FIG. Although the holding state of the switch control piece 31 is released, the switch lever 10 is maintained in the closed state because the cam portion of the third arm 10c is in contact with the pin 57 of the lift cam 25. Furthermore, since the detection plate 55 is rotating in the direction of the arrow J in the figure, the movable piece 67 does not come into contact with the detection plate 55 and is not rotated in the direction of the arrow K as shown in FIG. do not have.
Therefore, despite the sliding movement of the drive plate 23 in the direction of the arrow M shown in the figure, the pick-up arm device 27 does not move from the rest position. When the pick-up arm device 27 is in the rest position, as shown in FIG.
Since the detection plate 55 rotates in the direction indicated by the arrow U and pushes the detection auxiliary plate 60, the detection plate 55 rotates in the direction indicated by the arrow U in the figure. in this case,
The movable piece 67 on the drive plate 23 trying to return in the direction of the arrow M in the figure hits the detection plate 55, but the spring 63 stretches and escapes. Then, while the main gear 18 is rotating, the starting link 19 and the friction link 20 are returned to their original positions by the small gear 13. Also, since the pin 57 of the lift cam 25 is returned to its original position, the switch lever 10 rotates in the direction of the arrow V shown in FIG.
2a can no longer be pressed, the motor is de-energized and the turntable loses its rotational force, the lift 26 is lowered and the pick-up arm device is lowered onto the rest.

Start in the middle of the record performance mentioned above.
By pressing the switch that also serves as a stop, the solenoid 1 is energized, the suction plate 2 is attracted, and the stop plate 4 is
When the stopped state is released, the activation plate 15 rotates in the direction of the arrow E in the figure, so the pick-up arm device 27 is returned to the rest position by the same operation as the second operation of the drive plate 23 in the above explanation,
The switch 10 can be opened and stopped.

Furthermore, when the pick-up arm device 27 is manually rotated in the direction of arrow N in the figure in the stopped state of FIG. 1, the switch control pin 34 moves and rotates the switch control piece 31 in the direction of arrow P in the figure. The motor rotates in the direction of arrow B shown in the figure, and the button 12a of the switch 12 is pressed to rotate the motor. When the needle tip of the pick-up arm device 27 is lowered onto the record disc, the switch control pin 34 is separated from the switch control piece 31 and becomes free.
is the illustrated arrow P of the switch control piece 31 at the protrusion 33.
In order to maintain the state of movement in the direction, the switch 12
The record is kept closed and starts playing the record.
When the start/stop switch is operated at the end of or in the middle of playing a record, the pick-up arm device 27 is returned to the rest position by the same operation as the second operation of the drive plate 23 in the above explanation, and the switch 10 is turned on. It can be opened and stopped. On the other hand, when the pick-up arm device 27 is manually returned to the rest position in the middle of playing a record, the switch control pin 34 rotates the switch control piece 31 in the direction of arrow T in the figure, and the protrusion piece 33 causes the switch control piece 31 to rotate. To release the held state, the motor switch 10 can be opened to stop the rotation of the motor.

In addition, when the number of plays is set with the memory repeat knob 52 in the record playing state, the pin 6 of the detection plate 55 is set as shown in FIG.
1 comes into contact with the circumferential surface of the cam portion 47 of the memory repeat wheel 44, and stops the rotational movement of the detection plate 55 by the pin 57 in the direction of the arrow J shown in the figure. Therefore, when the drive plate 23 slides in the direction of the arrow H in the figure, the moving piece 67 provided on the drive plate 23 comes into contact with the detection plate 55 and rotates in the direction of the arrow K in the figure. 27 is returned to the rest position, but the moving pin 69 is moved again.
The above-mentioned memory repeat knob 52
Repeat for the set number of times. On the other hand, the drive plate 23
During the return operation in the direction of arrow M shown in the figure, the repeat pawl 4 provided on the drive plate 23 as shown in FIG.
0 protrusion 40b presses one tooth of the claw tooth portion 46 of the memory repeat wheel 44 and rotates the memory repeat wheel 44 in the direction of arrow W in the figure, so the number of times the memory repeat knob 52 is set is reduced by one. Become. After the repeat pawl 40 pushes the pawl tooth portion 46 by one tooth, the pin 43 comes into contact with the stopper piece 70 as shown in FIG. The part 46 moves out of the rotation locus. When the above-mentioned repeated record performance is completed, that is, when the record performance is completed with the set number of times of the memory repeat knob 52 returned to the zero position, the pick-up arm device 27 is automatically activated in the same manner as described above. The motor can be stopped by returning to the rest position.

Further, when a continuous repeat position is set with the memory repeat knob 52 in the record playing state, the performance is continuously repeated until the setting mode of the memory repeat knob 52 is returned to the zero position. In this case, although the pin 61 of the detection plate 55 contacts the circumferential surface of the cam portion 47, the claw tooth portion 46 that the repeat claw 40 contacts does not have a corresponding relationship, so that the memory based on the rotation of the memory repeat wheel 44 does not correspond. The return operation of the repeat knob 52 is not performed.

If the memory repeat knob 52 is being used improperly, such as by pressing the knob 52 during its return operation, the repeat claw 40 may be
Even when the pawl tooth portion 46 is forcibly rotated by one tooth in the direction of the arrow W shown in the figure, a spring 54 is provided between the memory repeat wheel 44 and the memory repeat knob 52. Since the energized wire 51 is suspended as shown in FIG. 10, there is no adverse effect on the performance of the record. That is, in the above embodiment, when the repeat claw 40 rotates the claw tooth portion 46 by one tooth to rotate the memory repeat wheel 44, the spring 54 provided in the middle of the flexible wire 51 as shown in FIG. absorbs the rotational stroke of one tooth, so it does not pose any hindrance to the sliding movement of the drive plate 23. After the feed operation for one tooth is completed, the spring 54 is applied to the pawl tooth portion 4.
6 is returned to its original position, and the absolute positional relationship between the memory repeat knob 52 and the pawl tooth portion 46 does not shift.

As described above, according to the present invention, the stop plate biased in one direction is locked by the spring biased state of the suction plate controlled by the suction of the solenoid. Since the activation plate can be controlled in the same direction by the plate,
This has the advantage that one solenoid can perform both stop and start operations.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing one embodiment of the record player of the present invention, Figs. 2, 3, and 4 are block diagrams of the main parts of the player, and Figs. 5 to 10 are block diagrams of the same player. FIG. 11, which is a diagram for explaining the operation, is a sectional view of the main part of the player. 1...Solenoid, 2...Adsorption plate, 3,7...
Spring, 4...Stop plate, 10...Switch lever, 13...Small gear, 15...Start plate, 18...
Main gear, 19, 20...Starting link, 23
... Drive plate, 25 ... Lift cam, 27 ... Pick up arm device, 29 ... Pick fixing plate, 3
0...Pick movable plate, 31...Switch control piece,
34...Switch control pin, 55...Detection plate, 5
7... Working pin, 58... Detection escape plate, 60...
Detection auxiliary plate, 62, 63... spring, 67... moving piece, 69... moving pin.

Claims (1)

[Claims] 1. A suction plate that locks the stop plate that is biased by a spring in one direction, a solenoid that also serves as a start/stop function that releases the locking state of the stop plate by the suction plate, and A starting plate and a switch lever that are rotated in conjunction with the movement, a motor switch that is operated by the switch lever, a main gear that includes a starting member that is rotationally driven by the starting plate and the motor switch, and rotation of this main gear. In response to the motion, the stop plate is linearly moved in a reciprocating direction, and in conjunction with the forward linear movement, the stop plate is moved in a direction opposite to the spring biasing direction, and is in a state where it is spring biased by the suction plate. a drive plate for locking and controlling the rotation of the switch lever to maintain the closed state of the motor switch; and a drive plate for vertically moving the pick-up arm device in conjunction with the linear movement of the drive plate in the reciprocating direction. a lift means, an arm position detection device for detecting the rotational position of the pick-up arm device, and a driving direction of the pick-up arm device determined in accordance with a detection output of the arm position detection device, when the pick-up arm device is at a rest position. , in conjunction with the linear movement of the drive plate in the reciprocating direction, holding a moving pin provided on the pick-up arm device to move the pick-up arm device from the rest position to the record playing position, and the pick-up arm device to the record playing position. At some point, an arm driving means for rotating the pick-up arm device from the record playing position to the rest position via the moving pin in conjunction with the reciprocating linear movement of the driving plate, and the output of the arm position detecting device. switch control means for maintaining the motor switch in the closed state when the pick-up arm device is in the record playing position, and controlling the motor switch to open the motor switch when the pick-up arm device has completed its pivot movement to the rest position; A record player characterized by: