turntable

Abstract

The objective is to provide a turntable that can remove static electricity generated in the record needle and record, thereby maintaining high-quality sound quality when playing records. [Solution] The turntable 1 of this invention comprises a body 2, a platter 3, a tonearm 4, a rotation mechanism 5, a suction mechanism 6, a levitation mechanism 7, and a static elimination mechanism 8. The static elimination mechanism 8 eliminates static electricity from the record 11 placed on the upper surface 3U of the platter 3. As a result, the turntable 1 of this invention can remove static electricity generated in the record needle and the record 11, thereby maintaining high quality sound quality of the reproduced sound of the record 11.

Description

Technical Field

[0001] This invention relates to a turntable.

Background Art

[0002] As a turntable for playing an analog record, there is one disclosed in Patent Document 1 below. Hereinafter, an analog record may sometimes be referred to as a record.

[0003] The turntable of Patent Document 1 includes a platter in which a hollow portion is formed, an adsorption mechanism for adsorbing the lower surface of the record to the upper surface of the platter, and a floating mechanism for floating the lower surface of the platter with respect to the upper surface of the body.

[0004] The turntable of Patent Document 1 reduces vibrations propagated from the platter to the record by floating the lower surface of the platter with respect to the upper surface of the body. As a result, the turntable of Patent Document 1 can suppress the generation of noise and maintain the high quality of the playback sound of the record by reducing the vibrations propagated to the record.

[0005] In a turntable, in order to maintain the high quality of the playback sound of the record, it is important to reduce the vibrations propagated to the record and to remove static electricity generated in the record needle and the record.

[0006] As a device for removing static electricity generated in an optical pickup and a disk, there is one disclosed in Patent Document 2 below. This disk device of Patent Document 2 generates ionized compressed air, that is, air ions, and blows them from a nozzle onto the disk surface to neutralize and remove static electricity generated in the optical pickup and the disk.

Prior Art Documents

Patent Documents

[0007] [Patent Document 1] Japanese Patent Application Publication No. 59-188802 [Patent Document 2] Japanese Patent Publication No. 2006-185517 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] However, the turntable described in Patent Document 1 does not include a record needle or a technical means for removing static electricity generated on the record.

[0009] Furthermore, the disc device described in Patent Document 2 is a disc device that records information onto a disc and reproduces information from a disc using an optical pickup, and is not a turntable that plays records with a record needle. Moreover, the disc device described in Patent Document 2 is a disc device that neutralizes and removes static electricity generated on the optical pickup and the disc by blowing air ions from a nozzle onto the disc surface, and is not a turntable that removes static electricity generated on the record needle and the record to maintain high quality sound quality of the reproduced sound of the record.

[0010] Thus, the turntable described in Patent Document 1 and the disc drive described in Patent Document 2 differ in the structure of the record needle and optical pickup, and in the objects being reproduced, which are records and discs. For this reason, even if the turntable described in Patent Document 1 is simply equipped with the static eliminator and nozzle of the disc drive described in Patent Document 2, it will be difficult to remove the static electricity generated in the record needle and record and maintain high quality sound quality of the reproduced record.

[0011] The problem that this invention aims to solve is to provide a turntable that can remove static electricity generated in the record needle and record, thereby maintaining high quality sound quality of the reproduced sound of the record. [Means for solving the problem]

[0012] A turntable according to a first aspect of this invention, in order to solve the above problems, is characterized by comprising: a body; a platter rotatably mounted on the upper surface of the body; a tonearm having one end attached to the body and the other end to which a record needle is attached; a rotation mechanism having at least a portion attached to the body for rotating the platter; a suction mechanism having at least a portion attached to the body for adhering the lower surface of a record placed on the upper surface of the platter to the upper surface of the platter; a levitation mechanism having at least a portion attached to the body for floating the lower surface of the platter relative to the upper surface of the body; and a static elimination mechanism having at least a portion attached to the body for eliminating static electricity from the record placed on the upper surface of the platter.

[0013] In the turntable of this invention, the adsorption mechanism has a pump, an air passage provided between the pump and an air port provided on the upper surface of the platter, and a valve provided in the middle of the air passage, and the static elimination mechanism has an ionizer that generates air ions, a nozzle provided on the body that sprays the air ions onto the upper surface of the record, a first air ion supply passage provided between the ionizer and the nozzle that supplies the air ions from the ionizer to the nozzle, and the first air ion The air supply path includes an air ion branch path that branches off from the middle of the supply path and is connected to the valve, an injection port provided on the upper surface of the platter for injecting the air ions onto the lower surface of the record, and a second air ion supply path provided between the air ion branch path and the injection port via the valve for supplying the air ions from the ionizer to the injection port. Preferably, a portion of the air path from the air port to the valve is shared with the second air ion supply path, and the air port and the injection port are shared. [Effects of the Invention]

[0014] The turntable of this invention can remove static electricity generated in the record needle and the record, thereby maintaining high quality sound quality when playing records. [Brief explanation of the drawing]

[0015] [Figure 1] Figure 1 is a perspective view showing an embodiment of the turntable of this invention in use. [Figure 2] Figure 2 is a bottom view of the turntable, and is a view taken along arrow II in Figure 1. [Figure 3] Figure 3 is a cross-sectional view of the turntable, and is a cross-sectional view taken along line III-III in Figure 1. [Figure 4] Figure 4 is a cross-sectional view of the turntable, and is a cross-sectional view taken along line IV-IV in Figure 1. [Figure 5] Figure 5 is an explanatory diagram showing the state during record playback in the case of a fan-equipped ionizer. [Figure 6] Figure 6 is an explanatory diagram showing the state after record playback has finished in the case of an ionizer with a fan. [Figure 7] Figure 7 is an explanatory diagram showing the state during record playback in the case of a fanless ionizer that is not equipped with a fan. [Figure 8] Figure 8 is an explanatory diagram showing the state after record playback has finished in the case of a fanless ionizer. [Figure 9] Figure 9 is an explanatory diagram of an air-electrical circuit for a fan-equipped ionizer, showing the state when the valve is in the third position, the closed center. [Figure 10] Figure 10 is an explanatory diagram of an air-electric circuit for a fan-equipped ionizer, showing the state during record playback as shown in Figure 5, when the valve is in the first position. [Figure 11] Figure 11 is an explanatory diagram of an air-electric circuit for a fan-equipped ionizer, showing the state after the record playback in Figure 6 has finished, when the valve is in the second position. [Figure 12] Figure 12 is an air-electric circuit explanatory diagram showing the state when the valve is located at the third position of the close center in the case of a fanless ionizer. [Figure 13] Figure 13 is an air-electric circuit explanatory diagram showing the state during record playback in FIG. 5 when the valve is located at the first position in the case of a fanless ionizer. [Figure 14] Figure 14 is an air-electric circuit explanatory diagram showing the state after the record playback in FIG. 6 when the valve is located at the second position in the case of a fanless ionizer.

Embodiments for Carrying Out the Invention

[0016] Hereinafter, an example of an embodiment (example) of the turntable according to this invention will be described based on the drawings.

[0017] Note that the present invention is not limited by the following embodiments. Further, the constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those within the so-called equivalent range. Furthermore, the constituent elements disclosed in the following embodiments can be combined as appropriate.

[0018] Also, in the claims on the separate sheet and in this specification, the upper surface and the lower surface are the upper surface and the lower surface in the state where the turntable according to this invention is installed on the installation surface.

[0019] Furthermore, in the drawings, since they are schematic diagrams, the main parts are illustrated, the illustration of parts other than the main parts is omitted, and a part of the hatching is omitted, or a part of the cross-section is omitted.

[0020] (Description of the Configuration of the Embodiment) Hereinafter, the configuration of the turntable 1 according to this embodiment will be described.

[0021] (Description of the Turntable 1) As shown in Figures 1 to 8, the turntable 1 comprises a body 2, a platter 3, a tonearm 4, a rotation mechanism 5, a suction mechanism 6, a levitation mechanism 7, a static elimination mechanism 8, and a power supply unit 9. The turntable 1 is placed on any surface 10, such as an audio device or piece of furniture. The turntable 1 plays analog records 11. Note that analog records 11 are sometimes simply referred to as records 11. A hole is provided in the center of the record 11.

[0022] (Description of Body 2) As shown in Figures 1 to 8, in this example, body 2 is formed by machining from a metal block such as aluminum. Therefore, body 2 is heavy. This increases the total weight of the main body, which consists of body 2 and its associated components, thus expanding the dynamic range.

[0023] A plate-shaped member, in this example a disc-shaped glass plate 20, is fixed to the upper surface 2U of the body 2. The upper surface 2U of the body 2 and the lower surface 20D of the glass plate 20 are in close contact. The upper surface 20U of the glass plate 20 is a smooth surface. A concave storage compartment 21 is provided on the lower surface 2D of the body 2. A shaft hole 22 is provided in the central part of the body 2, extending from the upper surface 2U of the body 2 to the storage compartment 21. The storage compartment 21 and the shaft hole 22 are in communication. The lower end portion of the rotating shaft 23 is rotatably inserted into the shaft hole 22. An air bearing mechanism is interposed between the fixed side of the body 2 and the rotating side of the rotating shaft 23. The upper end portion of the rotating shaft 23 protrudes upward from the upper surface 2U of the body 2.

[0024] Mounting sections 24 for attaching tonearms 4 are provided at each of the four corners of the upper surface 2U of the body 2. This allows the turntable 1 to be fitted with a maximum of four tonearms 4. However, in this example, a nozzle 83 of the static elimination mechanism 8 is attached to one of the mounting sections 24, so a maximum of three tonearms 4 can be fitted.

[0025] Legs 25 are attached to each of the four corners of the lower surface 2D of body 2. The legs 25 at the four corners of the lower surface 2D of body 2 correspond to the mounting parts 24 at the four corners of the upper surface 2U of body 2. The legs 25 are installed on the mounting surface 10. The legs 25 are made of air-damping insulators. This reduces vibration of the turntable 1.

[0026] An operating section 26 is provided on the front of the body 2. The operating section 26 includes switches 27 for operating the turntable 1 and a liquid crystal display 28 for displaying the operation of the turntable 1. The switches 27 include switches for suction and release, a switch for setting the rotation speed of the record 11, and a power on / off switch. The liquid crystal display 28 displays, for example, the rotation speed of the record 11.

[0027] (Description of Platter 3) As shown in Figures 1, 3 to 8, the platter 3 is rotatably mounted on the upper surface 2U of the body 2 and the upper surface 20U of the glass plate 20. Note that the upper surface 2U of the body 2 and the upper surface 20U of the glass plate 20 may simply be referred to as the upper surfaces 2U and 20U of the body 2, etc.

[0028] As shown in Figure 4, the platter 3 in this example has a double structure consisting of an outer main platter 3M and an inner sub-platter 3S. In this example, both the main platter 3M and the sub-platter 3S are formed into a disc shape by machining from solid aluminum. This increases the weight of the platter 3 and the inertia value of the platter 3, resulting in smoother and more stable rotation of the platter 3.

[0029] The diameter of the main platter 3M is greater than the diameter of the sub-platter 3S. Also, the height of the main platter 3M is greater than the height of the sub-platter 3S. Furthermore, the diameter of the bottom surface 3SD of the sub-platter 3S is smaller than the diameter of the top surface 20U of the glass plate 20.

[0030] A spindle 30 is provided in the center of the upper surface 3MU of the main platter 3M. The spindle 30 has a frustoconical shape, with its diameter increasing from top to bottom. In other words, the sides of the spindle 30 are tapered. This allows the record 11 to be set without any looseness when the holes of the record 11 are fitted onto the spindle 30. The upper surface 3MU of the main platter 3M is sometimes referred to as the upper surface 3U of the platter 3.

[0031] A thin electrostatic discharge sheet is attached to the upper surface 3U of the platter 3 to protect the record 11. Additionally, a lip-shaped sealing member is provided on the upper surface 3U of the platter 3 to ensure close contact between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3. However, the thin electrostatic discharge sheet is not necessarily required, nor is the lip-shaped sealing member necessarily required.

[0032] A cylindrical storage recess 31 is provided on the lower surface 3MD of the main platter 3M. The sub-platter 3S is housed in the storage recess 31. The main platter 3M and the sub-platter 3S are fixed together as a single unit. An O-ring 32 for sealing is provided between the lower surface 3MD of the main platter 3M, specifically the lower surface 3MD of the storage recess 31, and the upper surface 3SU of the sub-platter 3S.

[0033] A shaft hole 33 is provided in the central part of the sub-platter 3S. The upper end of the rotating shaft 23 is inserted and fixed into the shaft hole 33. As a result, the lower surface 3MD of the main platter 3M and the lower surface 3SD of the sub-platter 3S of the platter 3, which are fixed together, are rotatably positioned on the upper surfaces 2U and 20U of the body 2, etc. Note that the lower surface 3MD of the main platter 3M and the lower surface 3SD of the sub-platter 3S of the platter 3 are sometimes simply referred to as the lower surface 3D of the platter 3.

[0034] An annular space 34 is provided between the inner surface of the main platter 3M and the outer surface of the sub-platter 3S. The upper part of the annular space 34 is closed by the main platter 3M. On the other hand, the lower part of the annular space 34 is open on the lower surface 3MD of the main platter 3M and faces the upper surface 2U of the body 2.

[0035] (Explanation of tonearm 4) A mounting portion 40 and a base 400 are provided at one end of the tonearm 4. On the other hand, a cartridge, i.e., a record needle, is attached to the other end of the tonearm 4. Note that the record needle is not shown in the illustration. As shown in Figure 1, in this example the tonearm 4 has two tonearms, i.e., a first tonearm 41 and a second tonearm 42. Note that the tonearm 4, the first tonearm 41 and the second tonearm 42 are not shown in Figures 2 to 8.

[0036] The mounting portion 40 and base 400 at one end of the first tonearm 41 and the mounting portion 40 and base 400 at one end of the second tonearm 42 are attached to any two of the four mounting portions 24 of the body 2. In this example, there are two tonearms 4, but there may be one, three, or four. In this example, since the nozzle 83 of the static elimination mechanism 8 is attached to one of the four mounting portions 24 of the body 2, a maximum of three tonearms 4 can be attached to the mounting portions 24 of the body 2.

[0037] (Explanation of rotation mechanism 5) The rotating mechanism 5 is partially mounted on the body 2 and rotates the platter 3. The rotating mechanism 5 includes a drive motor 50 shown in Figure 2, a pulley (not shown), a belt (not shown), a control unit 51, and a power supply 52 for the drive motor 50. The power supply 52 is built into the box 90 of the power supply unit 9. The drive motor 50 is sometimes simply referred to as the motor 50.

[0038] In this example, the motor 50 is a two-phase four-pole AC synchronous motor. The motor 50 is housed in the housing 21 of the body 2 and is attached to the body 2 via a vibration damping mechanism.

[0039] The pulley is connected to the rotating shaft of the motor 50. The belt is wrapped around the pulley and the sub-platter 3S. The rotational force of the motor 50 is transmitted to the sub-platter 3S via the rotating shaft, pulley, and belt. This causes the sub-platter 3S and the main platter 3M, i.e., the platter 3, to rotate. In this example, the belt is made of polyurethane rubber with polished surfaces on both sides, so that vibrations from the motor 50 can be blocked by the belt and suppressed from being transmitted to the platter 3, thereby achieving a high signal-to-noise ratio.

[0040] As shown in Figures 1, 2, 5 to 8, the control unit 51 includes a control circuit 510, a first connector 511, a second connector 512, a first cable 513, a second cable 514, and a relay cable 515.

[0041] The control circuit 510 is housed in the storage compartment 21 of the body 2. The first connector 511 is located on the back of the body 2. The second connector 512 is located in the box 90 of the power supply unit 9. The first cable 513 is housed in the storage compartment 21 of the body 2. The first cable 513 is electrically connected to the operating unit 26 and the control circuit 510, to the motor 50 and the control circuit 510, and to the control circuit 510 and the first connector 511. The second cable 514 is wired and located inside the box 90 of the power supply unit 9. The relay cable 515 is connected to the first connector 511 and the second connector 512.

[0042] The control circuit 510, at startup, drives the motor 50 with high torque to rotate the stationary platter 3. When the rotational speed of the platter 3 reaches the rated speed, the torque switching circuit activates, switching the torque of the motor 50 to approximately half. Furthermore, while the platter 3 is rotating at the rated speed, the control circuit 510 constantly monitors the rotational speed of the platter 3 using a non-contact sensor (not shown), and controls the drive of the motor 50 so that the rotational speed of the platter 3 becomes the predetermined rotational speed when the rotational speed of the platter 3 changes. This results in low-vibration rotation of the motor 50 and accurate rotational speed, i.e., rotational speed, of the platter 3.

[0043] Part of the rotating mechanism 5 provided in the body 2 includes the motor 50, pulley, belt, control circuit 510, first connector 511, and first cable 513.

[0044] (Explanation of adsorption mechanism 6) As shown in Figures 1, 2, 4 to 8, the suction mechanism 6 is provided in part on the body 2 and the platter 3, and is used to adsorb the record 11 onto the upper surface 3U of the platter 3. The suction mechanism 6 includes a pump P, an air passage 60, and a valve V. The pump P and valve V are built into the box 90 of the power supply unit 9.

[0045] As shown in Figure 4, the air passage 60 is provided between the pump P and the air inlet 600. The valve V is provided in the middle of the air passage 60, that is, between the pump P and the air inlet 600. The air inlets 600 are provided at multiple locations on the upper surface 3U of the platter 3, in this example, at two locations. The air inlets 600 are also provided on the side of the O-ring 32 of the platter 3 that is closer to the spindle 30, that is, on the spindle 30 side. The number of locations where the air inlets 600 are provided, as well as the size and shape of the air inlets 600, are not particularly limited.

[0046] The air passage 60 includes a longitudinal passage 601, a transverse passage 602, an annular passage 603, a connecting passage 604, a first joint 605, a second joint 606, a first pipe 607, a second pipe 608, and a tube 609 as an intermediate pipe.

[0047] Two vertical passages 601 are provided between the air vent 600 on the upper surface 3U of the platter 3 and the lower surface 3MD of the main platter 3M. Two horizontal passages 602 are provided between the lower end of the vertical passage 601 on the upper surface 3SU of the sub-platter 3S and the upper end of the rotating shaft 23. Annular passages 603 are provided in an annular shape on the outer circumferential surface of the upper end of the rotating shaft 23 and in communication with the horizontal passages 602. Multiple connecting passages 604 are provided in the radial direction of the rotating shaft 23 between the annular passages 603 and the center of the upper end of the rotating shaft 23, and one is provided in the axial direction of the rotating shaft 23 between the center of the upper end of the rotating shaft 23 and the lower end surface of the rotating shaft 23.

[0048] The first joint 605 is located on the rear of the body 2. The second joint 606 is located in the box 90 of the power supply unit 9. The first pipe 607 is connected to the communication passage 604 on the lower end surface of the rotating shaft 23 and to the first joint 605. The second pipe 608 is routed inside the box 90 of the power supply unit 9 and is connected to the first port P1 of the valve V and to the third port P3 of the valve V and to the suction port PI of the pump P. The tube 609 is connected to the first joint 605 and the second joint 606.

[0049] Part of the suction mechanism 6 provided in the body 2 and platter 3 consists of an air inlet 600, a vertical passage 601, a horizontal passage 602, an annular passage 603, a connecting passage 604, a first joint 605, and a first pipe 607.

[0050] (Explanation of levitation mechanism 7) As shown in Figures 1, 2, 4 to 8, the levitation mechanism 7 is provided in part on the body 2 and levitates the lower surface 3D of the platter 3 relative to the upper surfaces 2U and 20U of the body 2. The levitation mechanism 7 includes a pump P common to the adsorption mechanism 6 and a levitation air passage 70.

[0051] The levitation air passage 70 is provided between the pump P and the annular space 700, as shown in Figures 4 to 8. The annular space 700 is provided in an annular shape at the lower part of the central portion of the sub-platter 3S. The upper part of the annular space 700 is closed by the sub-platter 3S. On the other hand, the lower part of the annular space 700 is open on the lower surface 3SD of the sub-platter 3S and faces the upper surfaces 2U and 20U of the body 2, etc. Note that the annular space 700 can be any space provided between the upper surfaces 2U and 20U of the body 2, etc. and the lower surface 3D of the platter 3.

[0052] The floating air passage 70 includes a vertical passage 701, a first joint 702, a second joint 703, a first pipe 704, a second pipe 705, and a tube 706 as an intermediate pipe. In the case of a fanless ionizer 81, as shown in Figures 7 and 8, the floating air passage 70 also includes a branch pipe 707.

[0053] The vertical shaft 701 is provided vertically from the upper surface 2U of the central part of the body 2 to the lower surface 2D of the central part of the body 2. The upper end of the vertical shaft 701 is in communication with the annular space 700.

[0054] The first fitting 702 is located on the rear of the body 2. The second fitting 703 is located in the box 90 of the power supply unit 9. The first pipe 704 is connected to the lower end of the vertical passage 701 on the lower surface 2D of the body 2 and to the first fitting 702. The second pipe 705 is routed inside the box 90 of the power supply unit 9 and is connected to the second fitting 703 and the discharge port PO of the pump P. The tube 706 is connected to the first fitting 702 and the second fitting 703. In the case of a fanless ionizer 81, the branch pipe 707 is branched from the second pipe 705 and connected to the air chamber 82. As a result, the air chamber 82 is connected to the discharge port PO of the pump P.

[0055] A portion of the levitation mechanism 7 provided in the body 2 consists of an annular space 700, a longitudinal passage 701, a first joint 702, and a first pipe 704.

[0056] (Explanation of static elimination mechanism 8) As shown in Figures 1 to 8, the static elimination mechanism 8 is provided in part on the body 2 and the platter 3, and eliminates static electricity from the record 11 placed on the upper surface 3U of the platter 3. The static elimination mechanism 8 includes a fan-equipped ionizer 80 shown in Figures 5 and 6, or a fanless ionizer 81 shown in Figures 7 and 8, an air chamber 82, a nozzle 83, a first air ion supply path 84, an air ion branch path 85, an injection port 86, and a second air ion supply path 87. Note that the fan-equipped ionizer 80 or the fanless ionizer 81 may simply be referred to as ionizer 80 or 81, the fan-equipped ionizer 80 may simply be referred to as ionizer 80, and the fanless ionizer 81 may simply be referred to as ionizer 81.

[0057] Ionizer 80 or 81 generates air ions A2. That is, ionizer 80 or 81 generates ions and mixes them with the air to produce air ions A2.

[0058] The air chamber 82 temporarily stores air ions A2 from the ionizer 80 or 81, thereby facilitating the supply of air ions A2.

[0059] The nozzle 83 is attached to one of the four mounting points 24 on the body 2. In this example, the nozzle 83 is tubular in shape and has a vertical portion at its lower end attached to the mounting point 24, and a horizontal portion at one end that is continuous with the upper end of the vertical portion. On the lower surface of the horizontal portion, there are multiple nozzles 88 for injecting air ions A2 onto the upper surface 11U of the record 11; in this example, there are three nozzles 88. In this example, the size of the three nozzles 88 increases from the upstream side to the downstream side, and the spacing between the nozzles 88 also increases from the upstream side to the downstream side. The number, shape, size, and spacing between the nozzles 88 are not particularly limited.

[0060] The first air ion supply path 84 is provided between the ionizer 80 or 81 and the air chamber 82, and between the air chamber 82 and the nozzle 83, and supplies air ions A2 from the ionizer 80 or 81 to the nozzle 83 via the air chamber 82, as shown by the dashed arrow.

[0061] The first air ion supply path 84 includes a first joint 840, a second joint 841, a first pipe 842, a second pipe 843, and a tube 844 as an intermediate pipe.

[0062] The first joint 840 is located on the rear of the body 2. The second joint 841 is located in the box 90 of the power supply unit 9. The first pipe 842 is routed within the storage section 21 of the body 2 and is connected to one of the four mounting points 24 of the body 2, specifically to the lower end of the vertical portion of the nozzle 83 and the first joint 840. The second pipe 843 is routed within the box 90 of the power supply unit 9 and is connected to the second joint 841 and the air chamber 82, and to the air chamber 82 and the ionizer 80 or 81, respectively. The tube 844 is connected to the first joint 840 and the second joint 841. The air chamber 82 is located in the middle of the second pipe 843 of the first air ion supply path 84.

[0063] The air ion branching path 85 is branched from the air chamber 82 located in the middle of the first air ion supply path 84 and is connected to the fourth port P4 of valve V.

[0064] The injection nozzles 86 are provided at multiple locations on the upper surface 3U of the platter 3, in this example at two locations, and inject air ions A2 onto the lower surface 11D of the record 11. In this example, the injection nozzles 86 are shared with the air inlet 600.

[0065] The second air ion supply passage 87 is provided between the air ion branch passage 85 and the injection port 86 via a valve V, and supplies air ions A2 from the ionizer 80 or 81 to the injection port 86. In this example, the second air ion supply passage 87 shares a portion of the air passage 60 between the air inlet 600 and the valve V. The portion shared with the second air ion supply passage 87 is the vertical passage 601, the horizontal passage 602, the annular passage 603, the connecting passage 604, the first pipe 607, the first joint 605, the tube 609, the second joint 606, and the second pipe 608, specifically the second pipe 608 between the second joint 606 and the valve V. In other words, the portion shared with the second air ion supply passage 87 is the portion excluding the second pipe 608 that is routed between the valve V and the pump P.

[0066] A portion of the static elimination mechanism 8 provided in the body 2 and platter consists of a nozzle 83, a first joint 840, a first pipe 842, an injection port 86, and a longitudinal passage 601, a transverse passage 602, an annular passage 603, a connecting passage 604, a first joint 605, and a first pipe 607, all of which are shared with the second air ion supply passage 87.

[0067] (Explanation of valve V)

[0068] As shown in Figures 5 to 8, valve V is an air passage 60 provided between the suction port PI and the air port 600 of pump P, and is located in the middle of the second piping 608. Valve V is also connected to the air chamber 82 of the static elimination mechanism 8 via the air ion branching passage 85. Valve V switches the flow of air A1 and air ions A2 in the air passage 60 in two directions: the direction of the solid arrow and the direction of the dashed arrow.

[0069] In other words, valve V is connected to the suction port PI of pump P via the second pipe 608, and when pump P is operated, the flow of air A1 in the air passage 60 is switched to an adsorption flow as shown by the solid arrows in Figures 5 and 7. That is, the air A1 between the upper surface 3U of platter 3 and the lower surface 11D of record 11 is drawn into the air passage 60 from the air port 600, passes through valve V, and flows to the suction port PI of pump P. As a result, the lower surface 11D of record 11 is adsorbed onto the upper surface 3U of platter 3.

[0070] Furthermore, valve V is connected to the air chamber 82 of the static elimination mechanism 8 via the air ion branching path 85, and the operation of the fan or pump P of the ionizer 80 of the static elimination mechanism 8 switches the flow of air ions A2 in the air passage 60 to the adsorption release flow shown in the direction of the dashed arrow. That is, air ions A2 in the first air ion supply passage 84 of the static elimination mechanism 8 are diverted from the air chamber 82 to the air ion branching path 85, pass through valve V and the air passage 60, and are discharged from the air port 600 between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11. As a result, the adsorption between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11 is released. At the same time, the lower surface 11D of the record 11 is statically eliminated.

[0071] Thus, valve V switches between the adsorption flow shown in the direction of the solid arrow and the adsorption release flow shown in the direction of the dashed arrow.

[0072] The configuration of valve V will be described in detail below. Valve V is a 3-position closed center solenoid valve, as shown in Figures 9 to 14. That is, valve V switches between the intermediate position shown in Figures 9 and 12, the first position on the left side shown in Figures 10 and 13, and the second position on the right side shown in Figures 11 and 14. Solenoids and springs are positioned at both ends of valve V, respectively.

[0073] Valve V is equipped with a first port P1, a second port P2, a third port P3, and a fourth port P4. The first port P1 is connected to the second fitting 606 via a portion of the second piping 608 of the adsorption mechanism 6 and a second air ion supply passage 87. The second port P2 is open and communicates with the atmosphere. The third port P3 is connected to the suction port PI of the pump P via the remainder of the second piping 608 of the adsorption mechanism 6. The fourth port P4 is connected to the air chamber 82 via an air ion branch passage 85.

[0074] When the power to the solenoids on both the left and right sides is off, valve V is in the intermediate position, as shown in Figures 9 and 12, and the first port P1, second port P2, third port P3, and fourth port P4 are all closed.

[0075] When the power to the left solenoid is turned on, valve V switches from the intermediate position to the leftmost position (first position), as shown in Figures 10 and 13, opening the first port P1 and the third port P3, while the second port P2 and the fourth port P4 remain closed. As a result, air A1 between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11 is drawn into the air passage 60 from the air inlet 600, causing the lower surface 11D of the record 11 to adhere to the upper surface 3U of the platter 3. When the power to the left solenoid is turned off, the elastic return action of the left spring causes valve V to switch from the first position shown in Figures 10 and 13 to the intermediate position shown in Figures 9 and 12.

[0076] When the power to the solenoid on the right is turned on, valve V switches from the intermediate position to the second position on the right, as shown in Figures 11 and 14, connecting the first port P1 and the fourth port P4, and connecting the second port P2 and the third port P3. As a result, a portion of the air ions A2 that were diverted from the first air ion supply path 84 to the air ion branch path 85 are discharged through the second air ion supply path 87 and from the injection port 86, which is shared with the air inlet 600, between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11. This releases the adsorption between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11, and simultaneously discharges the lower surface 11D of the record 11. When the power to the solenoid on the right is turned off, the spring on the right elastically returns valve V to the intermediate position shown in Figures 9 and 12.

[0077] (Explanation of pump P) As shown in Figures 5 to 14, the pump P has an inlet PI and a discharge port PO. The inlet PI is connected to the third port P3 of the valve V via the second pipe 608 of the air passage 60. The discharge port PO is connected to the buoyancy air passage 70. The pump P draws air A1 from the atmosphere into the inlet PI from the first port P1 or second port P2 of the valve V, through the third port P3 of the valve V and the second pipe 608 of the air passage 60, and compresses it as compressed air A3. The pump P then discharges the compressed air A3 from the discharge port PO into the buoyancy air passage 70, causing the platter 3 to float relative to the body 2.

[0078] (Explanation of power supply section 9) The power supply unit 9 comprises a box 90 separate from the body 2. The box 90 is equipped with a second connector 512 and second fittings 606, 703, and 841. Inside the box 90 are a power supply 52, a pump P, a valve V, an ionizer 80 or 81, an air chamber 82, a second cable 514, second piping 608, 705, and 843, an air ion branching path 85, and a second air ion supply path 87 which is shared with a portion of the second piping 608 of the adsorption mechanism 6.

[0079] The second cable 514 is wired inside the box 90 of the power supply unit 9 and is electrically connected to the second connector 512 and the power supply 52, to the power supply 52 and the pump P, to the power supply 52 and the valve V, and to the power supply 52 and the ionizer 80 or 81, respectively. The second pipes 608, 705, 843, the air ion branching path 85, and the second air ion supply path 87 are piped inside the box 90 of the power supply unit 9 and are connected to predetermined components.

[0080] (Explanation of the operation of the embodiment, and the operation in the case of the fan-equipped ionizer 80) The turntable 1 according to this embodiment has the configuration described above, and the operation in the case of the fan-equipped ionizer 80 will be explained below.

[0081] First, before playing record 11, the power to pump P, valve V, fan-equipped ionizer 80, and motor 50 is turned off. At this time, valve V is in the intermediate position shown in Figure 9.

[0082] Next, when playing record 11, the power to pump P, valve V, ionizer 80 or 81, and motor 50 is turned on.

[0083] At this time, the valve V is switched to the first position shown in Figure 10 when the solenoid on the left is energized. Also, the motor 50 rotates, causing the record 11 to rotate along with the platter 3, and the record 11 is played.

[0084] Furthermore, the fan-equipped ionizer 80 is activated, generating air ions A2 as shown in Figures 5 and 10, and these air ions A2 are supplied from the fan-equipped ionizer 80 to the air chamber 82. Due to the airflow action of the fan, some of the air ions A2 reach the nozzle 83 via the first air ion supply path 84 and are injected from the nozzle 83's injection port 88 onto the upper surface 11U of the record 11. This removes static electricity from the upper surface 11U of the record 11.

[0085] Meanwhile, the remaining air ions A2 reach the fourth port P4 of valve V via the air ion branching path 85. At this time, valve V is in the first position, and the fourth port P4 is closed. Therefore, the remaining air ions A2 remain at the fourth port P4 of valve V.

[0086] Furthermore, when the pump P is activated, as shown in Figures 5 and 10, the air A1 between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3 is drawn into the air passage 60 from the air inlet 600. As a result, the lower surface 11D of the record 11 is attracted to the upper surface 3U of the platter 3. When the air A1 between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3 is drawn into the air inlet 600, air A1 from the atmosphere is drawn in through the gap between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3.

[0087] Air A1 drawn into the air passage 60 from the air inlet 600 is drawn into the pump P via a portion of the air passage 60, the first port P1 and third port P3 of the valve V, the remaining second piping 608 of the air passage 60, and the suction port PI of the pump P, where it is compressed into compressed air A3. The compressed air A3 is discharged from the discharge port PO of the pump P and supplied to the annular space 700 via the levitation air passage 70. The compressed air A3 supplied to the annular space 700 causes the lower surface 3D of the platter 3 to float above the upper surfaces 2U and 20U of the body 2, etc., and a gap C is formed between the upper surfaces 2U and 20U of the body 2, etc. and the lower surface 3D of the levitated platter 3. The compressed air A3 supplied to the annular space 700 is discharged into the atmosphere through this gap C.

[0088] In this way, the operation of the pump P causes the lower surface 11D of the record 11 to be attracted to the upper surface 3U of the platter 3, and at the same time, the lower surface 3D of the platter 3 floats above the upper surfaces 2U and 20U of the body 2, etc.

[0089] When record 11 is stopped, the power to pump P, valve V, and fan-equipped ionizer 80 is on, while the power to motor 50 is off.

[0090] At this time, the valve V is switched to the second position shown in Figure 11, as the solenoid on the right side is energized. Also, the motor 50 stops rotating, and the record 11 stops rotating along with the platter 3, thus stopping the playback of the record 11.

[0091] Furthermore, the fan-equipped ionizer 80 is activated, generating air ions A2 as shown in Figures 6 and 11. These air ions A2 are supplied from the fan-equipped ionizer 80 to the air chamber 82. Due to the airflow action of the fan, some of the air ions A2 reach the nozzle 83 via the first air ion supply path 84 and are injected from the nozzle 83's injection port 88 onto the upper surface 11U of the record 11. This removes static electricity from the upper surface 11U of the record 11.

[0092] Meanwhile, the remaining air ions A2 are injected onto the lower surface 11D of the record 11 from the injection port 86, which is shared with the air inlet 600, via the air ion branching path 85, the fourth port P4 and the first port P1 of the valve V, and the second air ion supply path 87, which is part of the air passage 60. As a result, the lower surface 11D of the record 11, along with the upper surface 11U, is de-staticized.

[0093] Furthermore, the air ions A2 sprayed onto the lower surface 11D of the record 11 from the injection port 86, which is shared with the air port 600, cause the lower surface 11D of the record 11 to separate from the upper surface 3U of the platter 3, thereby releasing the adsorption between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3.

[0094] Furthermore, when pump P is activated, as shown in Figures 6 and 11, air A1 from the atmosphere is drawn into pump P through the second port P2 and third port P3 of valve V, the second pipe 608 of air passage 60, and the suction port PI of pump P, where it is compressed into compressed air A3. The compressed air A3 is discharged from the discharge port PO of pump P and supplied to the annular space 700 via the levitation air passage 70. The compressed air A3 supplied to the annular space 700 causes the lower surface 3D of the platter 3 to float above the upper surfaces 2U and 20U of the body 2, etc., and a gap C is formed between the upper surfaces 2U and 20U of the body 2, etc. and the lower surface 3D of the levitated platter 3. The compressed air A3 supplied to the annular space 700 is discharged into the atmosphere through this gap C.

[0095] (Explanation of the operation in the case of the fanless ionizer 81) The following describes the operation of the fanless ionizer 81. Before playback of record 11, the operation is the same as that of the fan-equipped ionizer 80, so the explanation is omitted.

[0096] During playback of record 11, valve V is switched to the first position shown in Figure 13. Also, motor 50 rotates, causing record 11 to rotate along with platter 3, and record 11 is played.

[0097] Furthermore, the fanless ionizer 81 is activated, generating air ions A2 as shown in Figures 7 and 13, and these air ions A2 are supplied from the fanless ionizer 81 to the air chamber 82. In addition, the pump P is activated, supplying compressed air A3 to the air chamber 82 via the branch pipe 707 of the flotation air passage 70, as shown in Figures 7 and 13.

[0098] When pump P is activated, some of the air ions A2 reach nozzle 83 via the first air ion supply path 84 and are injected from nozzle 83's nozzle opening 88 onto the upper surface 11U of record 11. This causes the upper surface 11U of record 11 to be statically discharged.

[0099] Meanwhile, the remaining air ions A2 reach the fourth port P4 of valve V via the air ion branching path 85. At this time, valve V is in the first position, and the fourth port P4 is closed. Therefore, the remaining air ions A2 remain at the fourth port P4 of valve V.

[0100] Furthermore, as shown in Figures 7 and 13, the operation of pump P draws air A1 between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3 into the air passage 60 through the air inlet 600. As a result, the lower surface 11D of the record 11 is attracted to the upper surface 3U of the platter 3. When air A1 between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3 is drawn into the air inlet 600, air A1 from the atmosphere is drawn in through the gap between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3.

[0101] The air A1 drawn into the air passage 60 from the air inlet 600 passes through a part of the air passage 60, the first port P1 and the third port P3 of the valve V, the second piping 608 of the air passage 60, and the suction port PI of the pump P, and is drawn into the pump P, where it is compressed to become compressed air A3.

[0102] Compressed air A3 is discharged from the outlet PO of the pump P into the buoyancy air passage 70. A portion of the compressed air A3 discharged into the buoyancy air passage 70 is supplied to the annular space 700 via the buoyancy air passage 70. The compressed air A3 supplied to the annular space 700 causes the lower surface 3D of the platter 3 to float above the upper surfaces 2U and 20U of the body 2, etc., and a gap C is formed between the upper surfaces 2U and 20U of the body 2, etc. and the floating lower surface 3D of the platter 3. The compressed air A3 supplied to the annular space 700 is discharged into the atmosphere through this gap C.

[0103] In this way, the operation of the pump P causes the lower surface 11D of the record 11 to be attracted to the upper surface 3U of the platter 3, and at the same time, the lower surface 3D of the platter 3 floats above the upper surfaces 2U and 20U of the body 2, etc.

[0104] Furthermore, the remaining compressed air A3 discharged into the buoyancy air passage 70 is supplied to the air chamber 82 via the branch pipe 707 of the buoyancy air passage 70.

[0105] When record 11 is stopped, the power to pump P, valve V, and fanless ionizer 81 is on, while the power to motor 50 is off.

[0106] At this time, the valve V is switched to the second position shown in Figure 14, as the solenoid on the right side is energized. Also, the motor 50 stops rotating, and the record 11 stops rotating along with the platter 3, thus stopping the playback of the record 11.

[0107] Furthermore, the fanless ionizer 81 is activated, generating air ions A2 as shown in Figures 8 and 14, and these air ions A2 are supplied from the fanless ionizer 81 to the air chamber 82. In addition, the pump P is activated, supplying compressed air A3 to the air chamber 82 via the branch pipe 707 of the flotation air passage 70, as shown in Figures 8 and 14.

[0108] When pump P is activated, some of the air ions A2 reach nozzle 83 via the first air ion supply path 84 and are injected from nozzle 83's nozzle opening 88 onto the upper surface 11U of record 11. This causes the upper surface 11U of record 11 to be statically discharged.

[0109] Meanwhile, the remaining air ions A2 are injected onto the lower surface 11D of the record 11 from the injection port 86, which is shared with the air inlet 600, via the air ion branching path 85, the fourth port P4 and the first port P1 of the valve V, and the second air ion supply path 87, which is part of the air passage 60. As a result, the lower surface 11D of the record 11, along with the upper surface 11U, is de-staticized.

[0110] Furthermore, the air ions A2 sprayed onto the lower surface 11D of the record 11 from the injection port 86, which is shared with the air port 600, cause the lower surface 11D of the record 11 to separate from the upper surface 3U of the platter 3, thereby releasing the adsorption between the lower surface 11D of the record 11 and the upper surface 3U of the platter 3.

[0111] Furthermore, when pump P is activated, as shown in Figures 8 and 14, air A1 from the atmosphere is drawn into pump P through the second port P2 and third port P3 of valve V, the second pipe 608 of air passage 60, and the suction port PI of pump P, where it is compressed into compressed air A3.

[0112] Compressed air A3 is discharged from the outlet PO of the pump P into the buoyancy air passage 70. A portion of the compressed air A3 discharged into the buoyancy air passage 70 is supplied to the annular space 700 via the buoyancy air passage 70. The compressed air A3 supplied to the annular space 700 causes the lower surface 3D of the platter 3 to float above the upper surfaces 2U and 20U of the body 2, etc., and a gap C is formed between the upper surfaces 2U and 20U of the body 2, etc. and the floating lower surface 3D of the platter 3. The compressed air A3 supplied to the annular space 700 is discharged into the atmosphere through this gap C.

[0113] In this way, the operation of the pump P causes the lower surface 11D of the record 11 to be attracted to the upper surface 3U of the platter 3, and at the same time, the lower surface 3D of the platter 3 floats above the upper surfaces 2U and 20U of the body 2, etc.

[0114] Furthermore, the remaining compressed air A3 discharged into the buoyancy air passage 70 is supplied to the air chamber 82 via the branch pipe 707 of the buoyancy air passage 70.

[0115] (Description of the effects of the embodiment) The turntable 1 according to this embodiment has the configuration and operation described above, and its effects will be explained below.

[0116] The turntable 1 according to this embodiment comprises a body 2, a platter 3 rotatably mounted on the upper surface 2U of the body 2, a tonearm 4 with one end attached to the body 2 and a record needle attached to the other end, a rotation mechanism 5 with at least a portion provided on the body 2 for rotating the platter 3, a suction mechanism 6 with at least a portion provided on the body 2 for attracting the lower surface 11D of a record 11 placed on the upper surface 3U of the platter 3 to the upper surface 3U of the platter 3, a levitation mechanism 7 with at least a portion provided on the body 2 for levitating the lower surface 3D of the platter 3 relative to the upper surface 2U of the body 2, and a static elimination mechanism 8 with at least a portion provided on the body 2 for eliminating static electricity from the record 11 placed on the upper surface 3U of the platter 3.

[0117] As a result, the turntable 1 according to this embodiment can remove static electricity from the record 11 placed on the upper surface 3U of the platter 3 by the static elimination mechanism 8. This allows the turntable 1 according to this embodiment to remove static electricity generated in the record needle and the record 11, thereby maintaining high quality sound quality of the reproduced sound of the record 11.

[0118] In the turntable 1 according to this embodiment, the adsorption mechanism 6 includes a pump P, an air passage 60 provided between the pump P and an air port 600 provided on the upper surface 3U of the platter 3, and a valve V provided in the middle of the air passage 60. The static elimination mechanism 8 includes an ionizer 80 or 81 that generates air ions A2, a nozzle 83 provided on the body 2 that sprays air ions A2 onto the upper surface 11U of the record 11, and a first air ion supply passage provided between the ionizer 80 or 81 and the nozzle 83 that supplies air ions A2 from the ionizer 80 or 81 to the nozzle 83. The air passage 60 has an air ion branching passage 85 that branches off from the middle of the first air ion supply passage 84 and is connected to the valve V, an injection port 86 provided on the upper surface 3U of the platter 3 that injects air ions A2 onto the lower surface 11D of the record 11, and a second air ion supply passage 87 provided between the air ion branching passage 85 and the injection port 86 via the valve V that supplies air ions A2 from the ionizer 80 or 81 to the injection port 86. The air passage 60 has an air ion branching passage 85 that branches off from the air port 600 to the valve V and the second air ion supply passage 87, and the air port 600 and the injection port 86 share an air passage 600.

[0119] As a result, the turntable 1 according to this embodiment can simultaneously remove static electricity from the upper surface 11U and lower surface 11D of the record 11 placed on the upper surface 3U of the platter 3 by the nozzle 83 and the injection port 86 of the static elimination mechanism 8. This allows the turntable 1 according to this embodiment to remove static electricity generated in the record needle and the record 11, thereby maintaining high quality sound quality of the reproduced sound of the record 11.

[0120] In the turntable 1 according to this embodiment, the valve V can be switched between at least two positions: a first position in which air A1 between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11 is drawn in from the air port 600 into the air passage 60, causing the lower surface 11D of the record 11 to adhere to the upper surface 3U of the platter 3; and a second position in which a portion of the air ions A2 that have been diverted from the first air ion supply passage 84 to the air ion branch passage 85 is discharged from the injection port 86 through the second air ion supply passage 87 between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11, releasing the adhesion between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11, while simultaneously discharging static electricity from the lower surface 11D of the record 11.

[0121] As a result, the turntable 1 according to this embodiment can switch the airflow in the air passage 60 between an adsorption flow that adsorbs the lower surface 11D of the record 11 to the upper surface 3U of the platter 3, and an adsorption release flow that releases the adsorption between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11, using a valve V.

[0122] Furthermore, in this embodiment, the turntable 1 switches the airflow in the air passage 60 via a valve V, which diverts the air ions A2 in the first air ion supply passage 84 from the air chamber 82 to the air ion branch passage 85. The ions then pass through a second air ion supply passage 87, which is shared with the valve V and a part of the air passage 60, and are discharged from an injection port 86, which is shared with the air port 600, between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11. In this way, the turntable 1 in this embodiment can release the adsorption between the upper surface 3U of the platter 3 and the lower surface 11D of the record 11, while simultaneously removing static electricity from the lower surface 11D of the record 11.

[0123] In the turntable 1 according to this embodiment, the ionizer 80 is a fan-equipped ionizer 80, an air chamber 82 is provided in the middle of the first air ion supply path 84, and the air ion branch path 85 is branched from the air chamber 82 and connected to the valve V, and the air chamber 82 temporarily stores the air ions A2 from the fan-equipped ionizer 80.

[0124] As a result, the turntable 1 according to this embodiment can temporarily store air ions A2 from the fan-equipped ionizer 80 in the air chamber 82, thereby facilitating the supply of air ions A2. Moreover, the turntable 1 according to this embodiment can maintain a high pressure in the air chamber 82 due to the fan action of the fan-equipped ionizer 80, thereby facilitating the supply of air ions A2.

[0125] In the turntable 1 according to this embodiment, the ionizer 81 is a fanless ionizer 81, an air chamber 82 is provided in the middle of the first air ion supply path 84, an air ion branch path 85 is branched from the air chamber 82 and connected to a valve V, the air chamber 82 is connected to a pump P, and compressed air A3 from the pump P is temporarily stored together with air ions A2 from the fanless ionizer 81.

[0126] As a result, the turntable 1 according to this embodiment can temporarily store air ions A2 from the fanless ionizer 81 in the air chamber 82, thereby facilitating the supply of air ions A2. Moreover, the turntable 1 according to this embodiment can maintain a high pressure in the air chamber 82 with compressed air A3 from the pump P, thereby facilitating the supply of air ions A2.

[0127] In this embodiment of the turntable 1, the levitation mechanism 7 has a pump P common to the suction mechanism 6 and a levitation air passage 70, the levitation air passage 70 is provided between the pump P and a space 700 provided between the upper surface 2U of the body 2 and the lower surface 3D of the platter 3.

[0128] As a result, the turntable 1 in this embodiment uses the same pump P for both the adsorption mechanism 6 and the buoyancy mechanism 7, thus reducing manufacturing costs.

[0129] In this embodiment of the turntable 1, a box 90 independent of the body 2 is provided, the rotation mechanism 5 has a part provided on the body 2 and a part that includes a drive motor 50 for rotating the platter 3 and a power supply 52 for the drive motor 50, the adsorption mechanism 6 has a part provided on the body 2, a pump P and a valve V, the levitation mechanism 7 has a part provided on the body 2 and the pump P common to the adsorption mechanism 6, the static elimination mechanism 8 has a part provided on the body 2, an ionizer 80 or 81 for generating air ions A2 and an air chamber 82 for temporarily storing the air ions A2, and the power supply 52, pump P, valve V, ionizer 80 or 81 and air chamber 82 are built into the box 90.

[0130] As a result, the turntable 1 according to this embodiment can be made smaller in size by incorporating the power supply 52, pump P, valve V, ionizer 80 or 81, and air chamber 82 within the box 90. Moreover, in the turntable 1 according to this embodiment, since vibrations from the power supply 52, pump P, valve V, ionizer 80 or 81, and air chamber 82 within the box 90 are not transmitted to the body 2, the sound quality of the playback sound of the record 11 can be maintained at a high quality.

[0131] (Explanation of examples other than the embodiment) It should be noted that this invention is not limited to the embodiments and modifications described above. For example, in the above embodiment, the pump P of the adsorption mechanism 6 and the pump P of the flotation mechanism 7 are shared. However, in this invention, the pump P of the adsorption mechanism 6 and the pump P of the flotation mechanism 7 may be separate.

[0132] In the above embodiment, the upper surface 11U and the lower surface 11D of the record 11 are simultaneously discharged. However, in this invention, as shown in claim 2, only the upper surface 11U of the record 11 may be discharged, or as shown in claim 3, only the lower surface 11D of the record 11 may be discharged. In this case, the number of parts can be reduced, and the manufacturing cost can be made cheaper.

[0133] In the above embodiment, the ionizer 80 or 81 is pre-attached to the body 2. However, in this invention, as shown in claim 9, the ionizer 80 or 81 may be retrofitted to the body 2. In this case, for example, as shown by the dashed line in Figure 1, a power supply unit 9A having the same configuration as the power supply unit 9 of the above embodiment is retrofitted to any of the multiple mounting units 24 of the body 2 via a mounting unit 900A. In this case, the ionizer 80 or 81 can be attached or removed as desired, and the turntable 1 can be adjusted as desired.

[0134] [Note] The contents described in some of the embodiments above can be understood, for example, as follows:

[0135] (1) Body 2 and A platter 3 is rotatably mounted on the upper surface 2U of the body 2, A tonearm 4, with one end attached to the body 2 and the other end to which a record needle is attached, At least a portion of the body 2 is provided, and the rotating mechanism 5 rotates the platter 3, A suction mechanism 6 is provided on the body 2 in part and is used to suction the lower surface 11D of the record 11, which is placed on the upper surface 3U of the platter 3, to the upper surface 3U of the platter 3. At least a portion of the body 2 is provided with a levitation mechanism 7 that levitates the lower surface 3D of the platter 3 relative to the upper surface 2U of the body 2, A static elimination mechanism 8 is provided in at least part of the body 2 and is used to eliminate static electricity from the record 11 which is placed on the upper surface 3U of the platter 3, Equipped with, It is characterized by the following:

[0136] As a result, the turntable 1 according to this embodiment can remove static electricity from the record 11 placed on the upper surface 3U of the platter 3 by the static elimination mechanism 8. This allows the turntable 1 according to this embodiment to remove static electricity generated in the record needle and the record 11, thereby maintaining high quality sound quality of the reproduced sound of the record 11.

[0137] (2) The adsorption mechanism 6 is Pump P and, An air passage 60 is provided between the pump P and the air port 600 provided on the upper surface 3U of the platter 3, A valve V is provided in the middle of the air passage 60, It has, The static elimination mechanism 8 is, Ionizer 80 or 81 that generates air ions A2, The body 2 is provided with a nozzle 83 that injects the air ions A2 onto the upper surface 11U of the record 11, A first air ion supply path 84 is provided between the ionizer 80 or 81 and the nozzle 83, and supplies the air ions A2 from the ionizer 80 or 81 to the nozzle 83. An air ion branching path 85 is branched off from the middle of the first air ion supply path 84 and connected to the valve V, An injection nozzle 86 is provided on the upper surface 3U of the platter 3, which injects the air ions A2 onto the lower surface 11D of the record 11, A second air ion supply passage 87 is provided between the air ion branch passage 85 and the injection port 86 via the valve V, and supplies the air ions A2 from the ionizer 80 or 81 to the injection port 86, It has, A portion of the air passage 60 between the air inlet 600 and the valve V is shared with the second air ion supply passage 87. The air port portion 600 and the injection port portion 86 are shared, It is characterized by the following:

[0138] As a result, the turntable 1 according to this embodiment can simultaneously remove static electricity from the upper surface 11U and lower surface 11D of the record 11 placed on the upper surface 3U of the platter 3 by the nozzle 83 and the injection port 86 of the static elimination mechanism 8. This allows the turntable 1 according to this embodiment to remove static electricity generated in the record needle and the record 11, thereby maintaining high quality sound quality of the reproduced sound of the record 11. [Explanation of Symbols]

[0139] 1 Turntable 10 Installation surface 11 records 11D Bottom 11U top 2 Body 2D bottom side 2U top 20 glass plates 20D Bottom 20U top 21 Storage compartment 22 Shaft holes 23 Rotation axis 24 Mounting part 25 Legs 26 Control section 27 switches 28 LCD displays 3 Platters 3D bottom surface 3U top 3M Main Platter 3MD bottom side 3MU top side 3S Subplatter 3SD bottom side 3SU top 30 spindles 31 Storage recess 32 O-rings 33 Shaft hole 34 Annular space 4 tonearms 40 Mounting part 400 base 41. First tonearm 42. Second tonearm 5. Rotation mechanism 50 motors 51 Control Unit 510 Control Circuit 511 First connector 512 Second connector 513 Cable No. 1 514 Second Cable 515 Relay Cable 52 Power supply 6 Adsorption mechanism 60 air passage 600 Air vent section 601 Passage 602 Yokoji 603 Ring Road 604 Communication path 605 First joint 606 Second joint 607 Piping No. 1 608 Second Piping 609 Tube 7 Levitation mechanism 70 Air channel for buoyancy 700 Annular space 701 Passage 702 First joint 703 Second joint 704 First Piping 705 Second Piping 706 Tube 707 Branch piping 8 Static elimination mechanism 80 Fan-equipped Ionizer 81 Fanless Ionizer 82 Air Chamber 83 nozzles 84. First air ion supply channel 840 First joint 841 Second joint 842 First Piping 843 Second Piping 844 Tube 85 Air Ion Branching Channel 86 Injection port 87. Second air ion supply channel 88 Nozzle 9.9A Power Supply Section 90 boxes 900A Mounting section A1 Air A2 Air ions A3 Compressed air C Gap P Pump PI intake port PO discharge port V-valve P1 Port 1 P2 2nd Port P3 3rd Port P4 4th Port

Claims

1. The body and, A platter rotatably mounted on the upper surface of the body, A tonearm having one end attached to the body and the other end to which a record needle is attached, At least a portion of the body is provided with a rotating mechanism for rotating the platter, A suction mechanism is provided in the body, at least in part, to suction the lower surface of a record placed on the upper surface of the platter to the upper surface of the platter, At least a portion of the body is provided with a levitation mechanism that raises the lower surface of the platter relative to the upper surface of the body, A static elimination mechanism is provided in at least part of the body for eliminating static electricity from the record placed on the upper surface of the platter, Equipped with, A turntable characterized by the following features.

2. The adsorption mechanism is, Pump and An air passage is provided between the pump and the air port provided on the upper surface of the platter, A valve is provided in the middle of the aforementioned air passage, It has, The aforementioned static elimination mechanism is An ionizer that generates air ions, The body is provided with a nozzle that sprays the air ions onto the upper surface of the record, A first air ion supply path is provided between the ionizer and the nozzle, and supplies the air ions from the ionizer to the nozzle. An air ion branching path that branches off from the middle of the first air ion supply path and is connected to the valve, The platter's upper surface is provided with an injection port that sprays the air ions onto the record's lower surface, A second air ion supply path is provided between the air ion branch path and the nozzle via the valve, and supplies the air ions from the ionizer to the nozzle. It has, A portion of the aforementioned air passage from the air inlet to the valve and the second air ion supply passage are shared. The air port and the injection port are shared, The turntable according to feature 1.

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