JPS5830665B2 - Record centralization device in autoplayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a record centralizing device in an auto player.

Generally, a record player is constructed so that the record is placed on a turntable so that the center hole of the record is engaged with a center spindle rotated by a motor, and playback is started by manual operation. ing.

However, it is extremely troublesome to place the record on the turntable as described above and operate the record as described above. The development of automatic players has come to be desired by general users.

However, there is an automatic performance device called a jukebox that automatically guides a record to a playing position and automatically plays the guided record.

However, such a device is not configured to automatically guide an arbitrarily selected record to a performance position from the outside and perform the performance.

The present invention proposes a record concentrating device which is particularly effective in an automatic player that inserts a record record and guides it smoothly to the playing position.Therefore, the object of the present invention is to When the record is not being guided, the concentrated member that guides the record to the center of the turntable is located outside of the vicinity of the record sensor, which is arranged on an arc centered on the center of the turntable. The object of the present invention is to provide a device in which the record conveying section of the conveying device is located inside the circular arc, thereby achieving a smooth and quick loading operation of the record by the concentrating member.

Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is an overall perspective view of an autoplayer according to the present invention, showing one configured for playing records,
Reference numerals 1 and 2 denote two upper and lower housings that constitute the autoplayer, and these two are always in a sealed state, so that the internal structure cannot be directly touched from the outside.

In addition, if the upper housing 1 is made of a transparent material and the lead-in operation can be performed arbitrarily using the manual operation member of the tone arm attached to the housing 1 or 2, the lead-in state can be controlled from the outside. It can be easily checked.

Reference numeral 3 denotes a group of switches for automatically operating the auto player, and display operation modes such as auto repeat and auto eject.

Reference numeral 4 denotes an insertion/ejection opening for a record disc 5 provided at the front of the housing 2, and upper and lower plates 6.7 and left and right side plates 8, 9 are provided protruding from the plate body of the housing 2, and in particular, the lower plate 7 is A relatively deep notch 10 is provided extending from the plate 6 and protruding forward as shown in FIG. 2, so that a record can be easily inserted and removed.

In addition, in order to smoothly insert the record 5, the upper and lower plates 6 are
, 7 is provided with a beveled edge LL12 at its tip.

On the other hand, in FIG. 2, reference numeral 13 is a board installed in the housing 2, and at the bottom of the board 13 is an electrical circuit box 1 that performs various controls using the electrical switch group 3.
4.15 is provided.

16 is a turntable 17 attached to the bottom of the board 13
This is a driving motor, and no center spindle is provided on the turntable 17.

On the other hand, 18 is a bracket attached to the lower surface of the housing 1, and a through hole 19 is bored in the horizontal part of the bracket 18, and a cotter pin 20 is fitted in the upper end of the through hole 19 for lifting/lowering. The rod 21 is slidably inserted, and this elevating rod 21
A coil spring 23 is interposed between the cotter pin 22 fitted into the midsection of the bracket 18 and the horizontal portion of the bracket 18, and this coil spring 23 always urges the lifting rod 21 downward.

Reference numeral 24 denotes a pin installed horizontally below the split pin 22 on the lifting rod 21, and one end of a link 26 that is rotatable about a shaft 25 lifts the pin 24. They are engaged in a similar manner.

Further, the other end of the link 26 faces one end of a single-shaped link 28 that is rotatable about a shaft 27, and the other end of the single-shaped link 28 is rotatably attached to an operating rod 30 of the plunger 29. installed.

That is, by the urging of the plunger 29, the elevating rod 21 is lifted upward via the cross-shaped link 28 and the link 26.

On the other hand, a protrusion 31 that fits into the center hole of the LP record;
A protrusion 32 that is continuous with this and can fit into the center hole of the donut disk
A record presser plate 34, which includes a protrusion 33 projecting from the periphery of the protrusion 32, is rotatably attached to the lower end of the elevating rod 21.

That is, when the plunger 29 becomes inactive,
The record holding plate 34 is lowered by the biasing force of the coil spring 23, and the protrusion 31 or 32 is fitted into the center hole of the record 5 on the turntable 17,
By pressing this, the rotation of the turntable 17 is reliably transmitted to the record 5.

Next, 35 and 36 insert the record 5 into the insertion/ejection opening 4 as described above.
A set of rollers forming the record conveying section of the record conveying device that pulls and conveys the record from the outside to the inside and from the inside to the outside. Processing is performed to enable operation, and if necessary, from the standpoint of preventing static electricity, etc.
Rubber mixed with carbon powder, etc. is used.

The roller 35 is attached to a predetermined portion of the casing 1 or 2 so that its circumferential surface faces an area at least as thick as the record disc than the horizontal position of the upper surface of the turntable 17. It is driven via a belt 39 by a motor 38 supported by a bracket 37 attached to a predetermined location within the housing 1 .

Note that a configuration in which the motor 38 is directly driven is also optional.

On the other hand, the roller 36 is rotatably attached to one end of a link 41 which is rotatably operated around a shaft 40, and an operating rod 43 of a plunger 42 is rotatably connected to the other end of the link 41. There is.

Note that the roller 36 is located sufficiently below the horizontal position of the upper surface of the turntable 17, and when the plunger 42 is energized, the link 41 is automatically rotated to move the roller 3
6 is pressed against the roller 35.

Further, each of the rollers 35 and 36 forming a pair constituting the record disc conveying section is connected to the turntable 1 as shown in FIG.
It is provided so as to be located inside a record sensor, which will be described later, which is arranged so as to be located on a circular arc centered on the center of the turntable 17, that is, to be located on the center side of the turntable 17 in the circular arc.

On the other hand, on the upper surface of the substrate 13, four
Book guide rails 44, 45, 46° 47 are attached, and these guide rails 44° 45, 46, 47 extend from the outer edge of the board 13 to the bottom of the turntable 17, as shown in FIGS. As shown in the figure, each consists of two bending plates facing each other.

In addition, rectangular cylindrical sliding members 48, 49 are guided along the guide rails 4445, 46, 47.
, 50.51 are loosely fitted.

Furthermore, within this sliding member 48°49.50.51,
Concentrating members 53, 54, 55, and 56 formed in an L shape that can freely rotate around a support shaft 52 that guides the record disc 5 to the center of the turntable 17 are attached, and the inside of these upright pieces (The center side of the turntable) is formed into a curved shape, and a record engagement portion 57 that engages with the outer peripheral edge of the record disc 5 is formed at the upper end thereof.

In this way, the sliding members 48, 49, 50, 51 move on the board 13 along the guide rails 44, 45, 46, 47.
When guided along the concentrating members 53, 54, 5
Parallel sides 53a, 54a, 55a, 56 of 5°56
The lower surface a also slides on the substrate 13, and the upright piece is also moved in a straight upright state.

Next, 58, 59, 60.61 are the sliding members 48.4
9, 50, and 51 respectively, and these are strings attached to the pulley 6 rotatably mounted on the base plate 13.
2, 63, 64, 65 to one end of a spring 66, 67, 68, 69 attached to a proper position on the board 13, and the sliding member 48, 49, 50, 51 is always kept outside the board 13. It seems to be biased towards the direction.

On the other hand, in front of the sliding members 4B, 49, 50.51, another string 70, 71, 72, 73 is fixed to the front of the sliding member 4B, 49, 50.
．． γ5. γ6. Another roller 80 guides the edge in the vertical direction so as to converge it through T7 and 78.79, respectively.
, 81, 82° 83, and is further inserted into a through hole 84 bored in the substrate 13 and a pipe 85 provided in communication with the hole 84, so that these are concentrated into one in this pipe 85, and the above-mentioned One end is fixed to a pulley 88 attached to the rotating shaft of a motor 87 via a pulley 86 rotatably attached to the lower part of the substrate 13.

Therefore, due to the driving rotation of the motor 87, the sliding members 48, 49, 50° 51 are moved against the turntable 17 against the springs 66, 67, 68° 69, respectively.
can be concentrated toward the center at a constant velocity.

Note that 89 in FIG. 4 is a detection switch that is closed when the sliding member reaches the outermost part of the substrate 13.

Furthermore, sensors 90, 91 and 92, 93 for detecting insertion of a record disc 5 are installed inside the auto player near the insertion/ejection opening 4 of the turntable 1.
7, and the distances from the center to the sensors 90, 91, 92, 93 are sufficiently shorter than the distances to the concentration members 53, 54, 55, 56 (i.e. , the above-mentioned cross-shaped plates 53, 54, 55.5
6).

Reference numeral 94 is a sensor for detecting the size of the record disc 5, and when the record disc 5 placed on the turntable 17 is an LP disc, this is shielded, but when it is an EP disc, it is not shielded. The size of the record disc 5 is detected by electromagnetic or photoelectric changes caused by the disc.

Sensors 95 and 96 are placed near the turntable 17, and are used to prevent another record from being erroneously inserted while the record 5 on the turntable 17 is being played.

Next, in the auto player configured as above,
The operation will be explained in order.

First, insert the record 5 into the housings 1 and 2 from the insertion/ejection opening 4 from the position shown by the solid line in FIG. 1 or the one-dot chain line in FIG.
By providing 0, it can be performed deeply as shown by the two-dot chain line.

In such a state, the leading edge of the record 5 reaches the lower part of the roller 35.

Incidentally, at the predetermined position where the record disc 5 is inserted, the entry of the record disc 5 is detected by the sensors 90, 91, 92, and 93, and the motor 38 is driven to move the roller 3.
5 rotates, the plunger 42 operates, and the roller 36 is moved through the link 41 to the upper roller 3.
5 and is driven to rotate.

In this way, the record 5 with its tip reaching the lower part of the roller 35 is held by these two rollers 35 and 36 so as to be bitten between them, and is drawn toward the turntable 17. .

During this retraction, when the record 5 releases the shielding of the sensors 90, 91, 92, 93, the drive of the monitor 38 and the biasing of the plunger 42 are released, and the The motor 87 is driven, and the edges 70, 71, 72, 73 are pulled through the boots IJ 88, 86, and the sliding member 4
8.49, 50.51 are guide rails 44, 45, 46
, 47 toward the center of the turntable 17, and the center of the record 5 pressed by the concentration members 53, 54, 55, 56 is aligned with the turntable 1.
The record 5 is guided onto the turntable 17 so as to be centered on the turntable 7, and a rough center positioning operation is performed in this way.

When this is completed, the urging force of the franchisor 29 is released, and the elevating rod 21 immediately descends under the elastic force of the coil spring 23, and the protrusion 3 of the record holding plate 34
1 or 32 is fitted to the center hole of the record 5, and accurate center positioning is performed.

When it is detected that the center positioning is completed, the motor 87 is driven to rotate in the opposite direction, and the edges 70° 71, 72, 73 are elastically moved by the springs 66, 67, 68, 69. The sliding members 48, 49, 50, and 51 are retracted in the circumferential direction by being pulled back in response to the generated force.

When the switch 89 detects the withdrawal, the motor 16 is then driven to rotate.

The rotation speed of the motor 16 is automatically determined by the sensor detecting whether the record disc 5 on the turntable 17 is an LP disc or an EP disc. The well-known lead-in mechanism of the tone arm operates.

Incidentally, in the performance state, the peripheral portion of the record 5 faces the lower part of the roller 35.

Here, when the performance is finished, the tone arm is returned, and the record 5 is ejected (this operation can be arbitrarily selected by the switch group 3), first, the plunger 29 is energized, When the lifting rod 21 is lifted, the projection 31.3 relative to the record 5
2 is disengaged, the driving of the motor 16 is stopped, and the other motor 38 is driven to rotate in the opposite direction to the above, and the plunger 42 is biased to cause the roller 36 to rotate. 35 through the periphery of the record 5.

Thus, the record 5 is moved by these two rollers 35, 3.
6 and moved toward the insertion/ejection port 4, when the peripheral part of the record 5 reaches the notch 10, and the record 5 releases the shielding for the sensors 95 and 96. , stopping the motor 38 that rotationally drives the roller 35 and rotating the roller 3 to the roller 35;
6, that is, the biasing of the plunger 42 is released.

Then, the ejecting operation described above is completed by pinching the periphery of the record in the notch 10 and pulling it out.

By the way, in the present invention, the concentration members 53, 54
, 55 and 56 are selected at positions relatively far from the center of the turntable 17 compared to the sensors 90, 9L92, and 93 described above.

This is because record 5 has these sensors 90, 9L92.
．． 93 detects the insertion, the roller 35 is driven, and the record disc 5 is pulled toward the turntable 17 while being held between the roller 36 and the record disc 5 is When the shielding of each of the sensors 90, 91, 92, and 93 by When the above-mentioned concentration member 53,
54, 55, and 56 can perform concentrated movements.

In this way, the concentration members 53, 54, 55, and 56 can smoothly concentrate the movement of the record 5 on the turntable.

As explained above, the present invention provides an auto player in which a record inserted through the insertion/ejection opening is automatically guided onto the turntable. A plurality of record disc sensors arranged on an arc centered on the center of the table, a record disc transport device that is operated according to the detection state of the record disc sensor, and a record disc transport device that is operated according to the detection state of the record disc sensor; a plurality of concentrated members that guide the record by moving radially with respect to the center of the turntable so that the center of the record almost coincides with the center of the turntable; Since the record holding part of the member is located outside of the vicinity of the circular arc, and the record transport part of the record transport device is located inside the arc, the record disc It is extremely easy and safe to load a record onto a turntable, and it also allows quick and concentrated operation of records onto the turntable, while ensuring reliable loading regardless of the size of the record being inserted. can be achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall perspective view of an autoplayer according to the present invention, FIG. 2 is a front sectional view of the main parts, and FIG. 3 is a schematic plan view of the main parts. FIG. 4 is also an enlarged perspective view of the concentrated member of the record disc. 4...Insertion/ejection port, 5...Record, 1
7...Turntable, 35.36...
・Roller, 53° 54.55.56... Concentrated member, 90, 91° 92.93... Sensor.

Claims (1)

[Claims] 1. In an auto player that automatically guides a record inserted through the insertion/ejection opening onto the turntable, there is a disc placed near the insertion/ejection opening along the insertion/extraction opening and along an arc centered on the center of the turntable. A plurality of record disc sensors are arranged, a record disc transport device is operated according to the detection state of the record disc sensor, and the center of the record transported by the record disc transport device is the center of the turntable. a plurality of concentrated members that guide the record by moving radially with respect to the center of the turntable so as to substantially coincide with the center of the turntable, and except during the guidance, the record holding portion of the concentrated members is aligned with the arc of the circular arc. A device for concentrating record discs in an auto player, wherein the record disc conveying section of the record disc conveying device is located outside the vicinity and inside the circular arc.