JPS5916323B2 - record player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a record player, and in particular has a structure in which a record is attracted to the turntable by sucking the air above the turntable 35 from below the turntable, thereby making it possible to play various records. To provide a record player which can be operated stably without causing any inconvenient phenomena, and which can be handled in the same manner as conventional record players.

If the record to be played does not stick tightly to the turntable due to its own warping or the like and floats even more than this, the following problems will occur.

In most cases, a record player is placed and used in the same room where speakers are installed.

For this reason, acoustic feedback acts on the record player, degrading the quality of the reproduced sound, but if the record is even slightly floating above the turntable, the degree of deterioration of the sound quality becomes greater. 2 When the playback needle traces the record, a reaction acts on the record.

At this time, if the record is floating above the turntable, the record will vibrate greatly and playback characteristics will deteriorate.
3. When the record is warped and the pick-up arm and cantilever swing vertically and the stylus moves between a and b, as shown in Figure 1, the stylus moves a distance D in the longitudinal direction of the sound groove.
As a result, the reproduced signal is frequency modulated and wow occurs.

4. Due to the warpage of the record, the center of motion of the vibrator changes significantly from its original center position, leaving the linear range of power generation efficiency, resulting in amplitude modulation, cross modulation, distortion, etc.

From the above, in order to improve the playback characteristics of a record, it has become essential to eliminate the rise of the record from the turntable.

Until now, the following configurations have been used to bring the record into close contact with the turntable, but none of them have been able to achieve a sufficient effect. 1. Purchase by placing a weight in the center of the record.

It has no effect at all if the outer circumference of the record is warped and floating. 2. Purchased by devising the shape of the rubber sheet on the turntable.

The warpage of records varies, and there is no one shape that fits all warps. 3. Purchasing a flat rubber bag filled with oil.

Since vinyl records are light, it is necessary to use extremely thin rubber in order to deform them to fit the record.

Therefore, it is easily damaged and cannot be put to practical use. Also, when the turntable rotates, the centrifugal force causes the oil to move toward the outer side, causing the original effect to be lost. 4. Rubber sheet structure with multiple suction cups lined up.

Since the record has sound grooves, the record does not stick to the suction cup, and the record is simply placed on the suction cup. 5. Purchase by pressing the outer circumference of the record with a ring.

Although it is quite effective to correct the warpage of a record and bring it into close contact with a turntable, it is troublesome to handle and causes problems such as the ring becoming an obstacle and causing parts that cannot be played. Furthermore, this method is ineffective if the center of the record is warped in the rising direction. In this case, although it is effective to use it in combination with a weight placed in the center, the trouble of handling is doubled. 6. Purchase of layers of rubber, plastic, foam, etc.

This is the same as placing a record on a flexible surface, and will not correct the warp. 7.Purchase to adhere to the turntable with adhesive.

There are problems such as the sticky substance sticking to the record or the stickiness of the sticky substance not lasting. It is also conceivable to purchase a record player in the same manner as the record cutting device shown in FIG.

In the figure, the suction turntable 1 is the turntable stand 2.
It is placed above. By fitting a cap 4 onto the upper part of the spindle 3 and suctioning it through a hose 5, the master record is attracted onto the suction turntable 1. However, this configuration cannot be applied to record players for the following reasons. 1. Every time you change a record, you have to remove the cap 4 from the spindle 3.
It is troublesome to handle.

．． Since the hose 5 extends upward, the height of the record player increases.

Furthermore, the hose 5 becomes very strained when changing records, which is inconvenient for use. ．． Since the hose 5 does not rotate, frictional noise is generated when the spindle rotates, and this is mixed into the record playback sound.

The present invention eliminates the above-mentioned drawbacks, and each embodiment thereof will be described below with reference to the drawings.

FIG. 3 is a plan view of essential parts of the first embodiment of the record player according to the present invention, and FIG. 4 is a sectional view taken along the line -- in FIG. In both figures, a turntable 10 is fitted and fixed to a rotating shaft 12 which is rotatably held upright on a bearing 11.
Further, the upper surface of the turntable 10 has a plurality of annular grooves 1.
0a and a diametrical groove 10b are formed, and the record disc 13
The grooves are configured so that the inside of each groove and the center of the turntable are in communication even when the turntable is placed thereon. Further, a plurality of communication holes 10d extending in the direction of the rotation axis are formed in the center step portion 10c0 of the turntable 10 and arranged in the circumferential direction. 1
Reference numeral 4 designates a suction adapter, which is loosely fitted onto the rotating shaft 12 and positioned and fixed on the underside of the turntable 10 between this and the bearing 11, and its upper surface abuts against the hub lower surface 10e of the turntable 10. There is.

Reference numeral 14a denotes an annular groove, which is formed on the upper surface of the adapter 14 so as to face the lower end opening of each of the plurality of communication holes 10d.

Further, on the side surface of the adapter 14, there is a suction hole 1 which communicates with the annular groove 14a and has one end connected to a suction pump (not shown) and the other end of a hose (not shown).
4b is formed. Thereby, the suction hole 14'ID communicates with the upper surface of the turntable through the communication hole 10d. Next, the operation of the purchasing device will be explained.

When the record disc 13 is placed on the turntable 10, the outer peripheral part of the record disc 13 comes into contact with the outer annular step part 10f, and the center part comes into contact with the central step part 10c, so that the upper side of the turntable 10 The flat space of the record disc 13 is substantially cut off from the outside. Now, when the suction pump (not shown) is activated, each groove 10a of the turntable 10,
The air in the turntable 10b moves to the center of the turntable, flows into the plurality of communication holes 10d, and is further discharged from the bottom of the turntable through the annular groove 14a5 and the suction hole 14b, and the record 13 is attracted onto the turntable 10. be done. Therefore, by continuing to operate the suction pump (not shown) during the record playback operation, the record 13 has its center and outer circumferential portions aligned with the central stepped portion 10c and the outer annular stepped portion 10f, respectively. The sound groove forming portion is brought into close contact with the plurality of step portions 10g, and the record 13 is attracted and brought into close contact with the turntable 10, so that even if the record 13 is warped, the warp is corrected. It rotates together with the turntable 10 in a horizontal state.

This eliminates the aforementioned drawbacks regarding playback characteristics,
The following effects can be obtained.

1 Since the record is in close contact with the turntable, howling is effectively prevented.

- Acoustic feedback prevents sound quality deterioration.

2. Even if the record is warped, the warp is corrected and the record is leveled, making pick-up tracing extremely stable.

・Output fluctuations are eliminated.

・Wah, cross modulation, and distortion are eliminated.

In addition, the player purchased above does not have any unnecessary protrusions above the turntable 10, so there is no problem in handling it.
It can be handled like a normal record player.

Note that the adapter 14 does not rotate and is attached to the turntable 10.
Since it is in contact with the hub lower surface 10e, the hub lower surface 1
0e requires highly accurate flatness.

However, since the central lower surface portion is easy to process, the hub lower surface 10e with desired accuracy can be obtained relatively easily. Further, since the relative speed between the adapter 14 and the lower surface 10e of the turntable hub is slow, it is sufficient to apply a small amount of grease to the contact surface. Furthermore, even if external air is sucked in between the adapter 14 and the turntable hub lower surface 10e, the amount of suction is small because the length of the outer periphery of the contact surface is short, and the record 13 is not placed on the turntable 10. It has almost no effect on the adsorption operation. Furthermore, since the above-mentioned unnecessary air suction occurs below the turntable 10, the sound generated by the air suction is hardly transmitted above the turntable 10, and does not become audible to the record player operator. In the above embodiment, the communication holes 10d are formed at six positions in the turntable of the record player shown in FIG.

This is because the machining accuracy of this part is high and the rotational speed is low, so that relative sliding with the adapter 14 can be performed smoothly, and the amount of unnecessary air suction can be reduced. It is also conceivable to form communication holes at positions 9, 6, 9, and 6 in the turntable. However, although the above-mentioned positions are easy to process, the rotational speed is high, the amount of surface runout and eccentricity are large, and the amount of air that is unnecessarily sucked tends to be large, causing a harsh sound, which is not preferable. Next, a second embodiment of the record player according to the present invention will be described with reference to FIG. attach

A ring-shaped sealing member 15 is made of an elastic material such as rubber or plastic and has a circular cross section.

On the top surface of the adapter 14, there is a small circular groove 1 on the outside of the circular groove 14.
4c, and a plurality of communication holes 10d are formed on the lower surface 10e of the turntable hub at positions corresponding to the small annular grooves 14c.
A small circular groove 10h is formed surrounding the ring-shaped seal member 15.
is fitted. Thereby, the airtightness between the turntable hub lower surface 10e and the adapter upper surface is completely ensured, and air intake in this portion is completely prevented.

Next, a third embodiment of the record player according to the present invention will be described with reference to FIGS. 7 and 8. In this embodiment, a communication hole is formed around the rotation axis.

In each figure, the turntable 16 has a hub 16a fitted and fixed to a rotating shaft 18 which is rotatably held in a bearing 17, and the lower surface of the hub is in contact with the upper surface of the bearing 17.

A ring-shaped seal member 19 is interposed in this contact portion. The bearing 17 has a suction hole 17a on the side surface near the top thereof, and an annular hole 17 that communicates with the suction hole 17a and opens at the top of the bearing.
(b) Grease reservoirs 17c are formed inside the central portions. Note that grooves 16b to 16e extending in the axial direction of the turntable are formed at four locations at 90° intervals on the inner peripheral surface side of the hub 16a of the turntable 16, and the wall surface of each of the grooves 16b to 16e. A communication hole 20 is formed between the rotary shaft 18 and the circumferential side of the rotating shaft 18 .

That is, the communication hole 20 connects the turntable 16 to the rotating shaft 18.
By fitting and fixing, the upper end thereof is opened to the upper surface of the turntable, and the lower end thereof is opened to the annular hole 17b, and is formed around the rotating shaft 18. Incidentally, grooving on the inner wall surface of the hub 16a is relatively easily performed. When a suction pump (not shown) is operated, air from the top side of the turntable 16 is sucked through the plurality of communication holes 20 and the suction hole 17a, and the center of the record 13 is engaged with the stepped portion 18a of the rotating shaft 18. It is stopped and attracted onto the turntable 16.

At this time, the seal member 19 prevents unnecessary air from being sucked. 9 to 11 respectively show fourth to sixth embodiments of record players according to the present invention, each having a structure in which a communication hole is formed surrounding the turntable rotation axis.

In each figure, parts that are substantially the same as those shown in FIG. 8 are given the same reference numbers. In FIG. 9, the turntable 21 has a plurality of grooves 21b formed on the inner wall of its hub 21a,
An annular groove 21c that connects the grooves 21b with each other at the lower end.
It forms. A groove 22a is formed in the circumferential wall of the rotating shaft 22 between the annular groove 21c and the annular hole 17b. Here, the groove 21b cooperates with the peripheral wall surface of the rotating shaft 22 to define the first communication hole 23, and the groove 22a cooperates with the lower inner wall surface 21d of the hub 21a to define the second communication hole 23. Communication hole 2
Define 4. Further, the second communication hole 24 communicates with the suction hole 17a at all rotational positions of the turntable 21 through the annular hole 17b of the bearing 17. Note that the lower surface of the hub of the turntable 21 is in contact with the upper surface of the bearing 17.
When the suction pump (not shown) is operated, the air on the top side of the turntable 16 is sucked through the first communication hole 23, the second communication hole 24, and the suction hole 17a, and
3 is attracted onto the turntable 21 with its center being locked by the rotating shaft stepped portion 22b.

FIG. 10 was purchased in substantially the same manner as FIG. 9.

In the figure, reference numeral 25 denotes a cylindrical seal member made of metal, plastic, or rubber, the upper part of which fits into the inner circumference of the turntable hub 21a, and the lower part of which fits into the inner peripheral part of the bearing 17. It matches. Thereby, even if the turntable 21 is separated from the bearing 17, the second communication hole 26 defined by the inner wall surface of the seal member 25 and the side wall groove 22a of the rotating shaft 22 is sealed from the outside.

Therefore, the turntable 21 rotates more smoothly without contacting the bearing 17, and moreover, no unnecessary external air is sucked in. Furthermore, the turntable 21 maintains its seal as long as the cylindrical seal member 25 is fitted into the turntable hub 21a and the bearing 17.
By varying the dimension d, the height position of the turntable 21 can be easily and variably adjusted. This eliminates the need for the commonly performed troublesome height adjustment operation for the lower end of the shaft. In general, in machining, the peripheral wall surface of a cylinder and the inner wall surface of a cylinder can be machined more easily and with higher precision than when machining a flat surface. Therefore, in the above embodiment, the peripheral wall surface of the cylinder and the inner wall surface of the cylinder contact each other to form a sealing part, so compared to the case where a pair of flat surfaces contact each other to form a sealing part, it can be easily processed. , which exhibits a considerable sealing effect. In FIG. 11, the hub 27a of the turntable 27 is in contact with the top of the bearing 28. In FIG.

A considerably long side wall groove 29a is formed in the inner wall of the rotating shaft 29, the upper end of which faces the central annular groove 27b on the upper surface side of the turntable 27, and the lower end of which faces the grease reservoir 28a located approximately at the center of the bearing 28. . This side wall groove 29a is connected to the hub 27a.
A communicating hole 30 is formed in cooperation with the inner wall surface of the bearing 28. Further, the bearing 28 is provided with a suction hole 28b that communicates with the grease reservoir 28a at substantially the center in the height direction. In the fifth and sixth embodiments as well, by operating the suction pump (not shown), the air above the turntable is sucked through the communication holes 23, 30, etc., and the record 13 is moved from the turntable 21, 27. In addition, in the first to sixth embodiments described above, the cross-sectional area of the communication hole can be made considerably larger than that in the embodiments described later.
Therefore, the amount of air sucked can be increased, and the record can be effectively attracted to the turntable.

Next, seventh, eighth and ninth embodiments of the record player according to the present invention will be described with reference to FIGS. 12, 13 and 14, respectively.

Each of the embodiments has a structure in which a hole communicating between the top surface of the turntable and the suction hole is formed in the rotating shaft, thereby eliminating the need for a seal between the turntable and the bearing at all. In FIG. 12, the turntable 31 has its tapered hole fitted and fixed to the tapered part of the rotating shaft 32.
is rotatably held by a bearing 33 located away from the turntable 31, with its lower end supported by a steel ball 34.

The rotating shaft 32 has an axial hole 32a and a diametric hole 32.
b and 32c, and annular grooves 32d are formed at both end openings of the diametrical hole (suction opening) 32b. The axial hole 32a is formed to extend from the lower end surface of the rotating shaft 32 to near the top thereof. A plurality of vertical holes 31a are bored in the vicinity of the center of the turntable 31, and the diametrical hole 32b has an annular groove 32d on both open end sides facing near the bottom of the vertical hole 31a. Axial hole 3
It is formed with an opening at the top of 2a. Another diametrical hole 32c is formed across the axial hole 32a, with both ends opening into a grease reservoir 33a formed approximately at the center of the bearing 33 in the height direction. Also, the suction hole 33b
is formed on the side surface of the bearing 33 in communication with the grease reservoir 33a. Note that the holes 32a, 32b, and 32c function as communication holes. When the suction pump (not shown) is operated, the air on the top side of the turntable is pumped through the vertical hole 31a and the holes 32b, 32a, 3 in the rotating shaft 32.
The record 13 is guided to the suction hole 33b through the record 2c and sucked by the pump, and the record 13 is attracted to the upper surface of the turntable 31.

Note that the portion 43 where the rotating shaft 32 and the bearing 33 are in contact exhibits a sufficient sealing function. In the above configuration, since the communication hole is formed in the rotating shaft 32, the communication hole can be completely kept airtight without requiring the sealing material required in each of the above embodiments. It is possible to provide a record suction function in almost the same shape as a player, and furthermore, since no processing requiring particularly high precision is required, the same performance can be obtained even when processed into a conventional player.

In the eighth embodiment shown in FIG. 13, the suction hole 35a is arranged near the middle and lower part of the bearing 35, and communicates with the space 37 formed between the narrow diameter part of the rotating shaft 36 and the bearing 35. There is.

The rotating shaft 36 includes an axial hole 36a extending from the lower surface, and diametric holes 3 near the upper and lower portions of the axial hole 36a.
6b and 36c are formed. The rotary shaft 36 is rotatably held in the bearing 35 with its lower end supported by a steel ball 38, and a turntable 39 is fitted and fixed to the upper part of the rotary shaft 36 at a distance from the bearing 35. Also, turntable 3
9, a central annular groove 39a is formed opposite the openings at both ends of the diametrical hole 36b. Note that the holes 36a, 36
b and 36c have a function as a communicating hole. When the suction pump (not shown) is activated, the air above the turntable flows through the central annular groove 39a and the diametrical hole 36b.
, the axial hole 36a, the diametrical hole 36c, and the space 37 to the suction hole 35a, and is sucked by the pump, and the record 13 is attracted onto the turntable 39.

During this operation, the portion 44 where the rotating shaft 36 and the bearing 35 are in contact with each other
, 45 exhibit a sufficient sealing function, and air does not flow into the grease reservoir 35b, so there is no risk of the grease deteriorating in quality. Further, in the above embodiment, the lower diametrical hole 36c is formed near the lower part of the rotating shaft 36,
Accordingly, a suction hole 35a is arranged near the bottom of the bearing 35.

As a result, the contact area between the rotating shaft 36 and the bearing 35 at the upper position of the suction hole 35a becomes large, and a sufficiently large sealing effect can be obtained. Moreover, instead of this diametrical hole 36c, a diametrical groove (indicated by a two-dot chain line) may be formed on the lower surface side of the rotating shaft 36. Further, in the ninth embodiment shown in FIG. 14, the turntable 40 is fitted and fixed to a rotating shaft 41, and the rotating shaft 41 is rotatably held in a bearing 42, and the hub of the two turntables and the upper surface of the bearing It is separated from.

A groove 40a opening toward the top side is formed in the inner wall surface of the hub of the turntable 40, and a suction hole 42b communicating with a grease reservoir 42a is formed at the substantially central side surface side of the bearing 42. and the rotating shaft 41 has a hole 41a.
and 41b are bent to each other and communicated with each other at one end thereof, and are bored from the peripheral wall side of the rotating shaft 41.
Further, the hole 41a is open to face the groove 40a, and another hole 41b is opened to face the grease reservoir 42a. Here, the holes 41a and 41b function as so-called communication holes, and the lengths of these communication holes are as shown in FIGS. 12 and 13 above.
It is considerably shorter than the embodiment shown in the figure. In addition, the rotating shaft 4
The portion 46 where 1 and the bearing 42 come into contact exhibits a sufficient sealing function as in the previous case. When the suction pump (not shown) is activated, the air above the turntable is drawn into the groove 4.
0a, a pair of holes 41a and 41b, and a grease reservoir 42a, the oil is guided to a suction hole 42b, and is sucked by the pump, so that the record 13 is suctioned onto the turntable 40.

Therefore, also in the second to ninth embodiments, the record rotates while being attracted to the turntable, and the warpage of the record is also corrected, so the advantages obtained by the first embodiment are obtained. Effects similar to those described above can be achieved. As described above, according to the record player of the present invention, in the record player that suctions the air on the upper surface side of the turntable to attract the record onto the turntable, the suction hole connected to the suction pump is connected to the turntable. An adapter is formed in an adapter that is fixedly provided in contact with a part of the bottom surface of the turntable in a state that allows independent rotation of the turntable, and is provided below the turntable, and the adapter is provided between the suction hole and the top surface of the turntable. A communication hole is formed in the hub of the turntable, and the turntable has a shape in which a plurality of grooves and a communication groove communicating with the center of each turntable are formed on the upper surface of the turntable. Since the air in the groove on the top surface is sucked through the communication hole and the suction hole and the record is sucked onto the turntable, the record is attached to the part facing the groove on the turntable, i.e. Since most of the surface of the record is sucked and absorbed, the suction force applied to the record is quite large, making it possible to firmly attach the record to the turntable. 6 Howling and sound quality deterioration due to acoustic feedback can be effectively prevented, and even if the record is warped, the warp can be effectively corrected.
Various inconveniences caused by warping can be solved, and since the adapter is configured with a suction hole formed in it and the adapter is placed in contact with the bottom surface of the turntable, the configuration and assembly can be simplified, and communication can be improved. Since the hole is formed in the hub of the turntable, it is easier to form the communication hole and increase the cross-sectional area of the communication hole compared to the case where the communication hole is provided inside the turntable rotation shaft. In addition, the communication hole is formed by a groove extending in the axial direction on either the circumferential surface of the turntable rotating shaft or the inner circumferential surface of the turntable hub. The communication hole can be formed by relatively easy machining, in particular, by forming a groove on the inner circumferential wall surface of the hub of the turntable, which is made of a soft material, and forming a groove defined by the groove and the circumferential wall surface of the turntable shaft. By forming the space between the turntable and the bearing into a communication hole, machining can be performed much more easily.Furthermore, by forming the communication hole inside the turntable rotating shaft, the connection between the turntable and the bearing can be made easier. It is possible to completely eliminate unnecessary inflow of air into the communication hole even if the holes are separated, there is no need to consider sealing, and there is no need for precision machining. Records can be reliably attracted by simply processing the holes, etc. Furthermore, by opening the lower side of the communicating hole formed in the rotating shaft to the lower end surface of the rotating shaft, the communicating hole can be used as a steel ball holding hole. It has various excellent features such as being able to be used in combination with the steel ball holding hole and eliminating the need to specially form a steel ball holding hole.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a diagram showing the state of displacement of the pickup device due to warping of the record, Fig. 2 is a diagram showing the schematic configuration of the record master suction device in the record cutting device, and Fig. 3 4 is a plan view of the first embodiment of the record player according to the present invention, FIG. 4 is a vertical cross-sectional view taken along the vertical plane including the line in FIG. 3, and FIG. 6 is a vertical cross-sectional view of the main parts of the second embodiment of the record player of the present invention, FIG. 7 is a cross-sectional view of the main parts of the third embodiment of the record player of the present invention, and FIG. The figure is a plan view showing the shape of the turntable hub in FIG. 7, and FIGS. 9 to 14 are longitudinal sectional views of main parts of fourth to ninth embodiments of the record player according to the present invention, respectively. 10, 16, 19, 21, 27, 31, 39, 40...
... Turntable, 10d, 20, 23, 24,
30...Communication hole, 11, 17, 28, 33, 3
5, 42...Bearing, 12, 18, 22, 29,
32, 36, 41--Rotating axis, 13...
-Record, 14...Suction adapter, 14
a, 17a, 28b, 33b, 35a, 42b...
...Suction hole, 15, 19-...Ring-shaped seal member, 25...Cylindrical seal member, 32a, 36
a... Axial hole, 32b, 32c, 36b, 3
6c... Diameter hole.

Claims (1)

[Scope of Claims] 1. In a record player that suctions air from the upper surface of a turntable to attract a record onto the turntable, a suction hole connected to a suction pump is connected to a suction hole that allows the turntable to rotate independently. An adapter is formed in an adapter that is fixedly provided in contact with a part of the lower surface of the turntable in a permissive state, and is provided below the turntable, and has a communication hole that communicates the suction hole with the upper surface of the turntable. The turntable is formed in the hub of the turntable, and the turntable has a shape in which a plurality of grooves and a communication groove for communicating each groove with the center of the turntable are formed on the upper surface of the turntable, and a groove in the groove on the upper surface of the turntable is formed. A record player characterized in that air is sucked through the communication hole and the suction hole to attract the record onto the turntable. 2. A suction hole connected to a suction pump in a record player that suctions air from the upper surface of the turntable to attract the record onto the turntable, is connected to a suction hole connected to a suction pump that rotatably holds the turntable rotating shaft and attaches the record to the lower surface of the turntable. A communication hole is formed in the side wall of the bearing that is in contact with the turntable, and is provided below the turntable, and a communication hole that communicates the suction hole with the upper surface side of the turntable is provided around the turntable rotation axis or inside the hub of the turntable. A plurality of grooves on the upper surface of the turntable, and a communication groove that communicates each groove with the center of the turntable; A record player characterized in that the turntable has a shape in which air in a groove on the upper surface of the turntable is sucked through the communication hole and the suction hole to attract the record onto the turntable. . 3. In a record player that suctions air from the upper surface of a turntable to attract a record onto the turntable, a suction hole connected to a suction pump is connected to a side wall of a bearing that rotatably holds a turntable rotating shaft. A communication hole is formed inside the turntable rotation shaft to communicate the suction hole and the upper surface side of the turntable, and the turntable is provided with a plurality of grooves and The groove is shaped to have a communication groove that communicates with the center of the turntable, and the air in the groove on the top surface of the turntable is sucked through the communication hole and the suction hole to place the record onto the turntable. A record player characterized in that it is configured to be adsorbed. 4. The communication hole is formed to extend in the axial direction from the lower surface of the turntable rotation shaft, and the lower end opening of the communication hole is fitted into a steel ball placed on the bottom of a bearing that holds the rotation shaft. 4. A record player according to claim 3, characterized in that the record player has a configuration in which: