CN111627464A - Air-float rotary disc and black-glue player - Google Patents

Abstract

The invention provides an air-floating turntable and a vinyl record player, comprising a base and a turntable, the base facing the turntable is provided with a conical frustum, the turntable is provided with a turntable groove corresponding to the conical frustum, and the base There is an air chamber, the air chamber is provided with an air nozzle on the side away from the turntable, and the top surface of the conical frustum is provided with a top surface annular groove, and the top surface annular groove is connected to the The air chamber is connected, the side of the frustum is provided with a side annular groove, the side annular groove is communicated with the air chamber through the side air hole, the turntable is arranged above the base, and can be connected to the base under the action of gas Keep a certain interval. The beneficial effects of the present invention are as follows: an air-floating turntable with a reasonable air path structure is provided, which can reliably filter the vibration from the horizontal and vertical directions, effectively avoid the distortion of the playing sound caused by the vibration interference, and let the vinyl record player play back. The music has better signal-to-noise ratio indicators, less distortion, and purer sound quality.

Description

Air-floating turntable and vinyl record player

technical field

The invention relates to the technical field of vibration isolation structures, in particular to an air-floating turntable and a vinyl record player.

Background technique

In the field of vinyl record players, the turntable (Platter) is the key component that carries the vinyl record and rotates at a specified speed. The vinyl playback system relies on the stylus to pick up the vibration signal engraved on the record to produce sound. Therefore, on the vinyl record player, it is necessary to isolate the interference of external vibration and the self-resonance of the record player to the sound pickup of the stylus, so as to avoid the distortion of the playback sound caused by the vibration interference. .

At present, the more advanced vibration isolation technology used in the design of the turntable is the magnetic suspension and air suspension. Among them, the isolation effect of air flotation is the best. The existing air-floating turntable only has the air-floating in the vertical direction, and still has the rigid connection of the metal shaft in the horizontal direction, so it can only play the role of isolating the vibration in the vertical direction, and still cannot isolate the shock wave in the horizontal direction.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an air-floating turntable and a black glue machine with reasonable structure, high reliability and omnidirectional vibration isolation.

In order to solve the above technical problems, the technical solution adopted in the present invention is as follows: an air-floating turntable, comprising a base and a turntable, the side of the base facing the turntable is provided with a conical frustum, and the turntable is provided with a turntable corresponding to the conical frustum groove, the base is provided with an air chamber, the side of the air chamber away from the turntable is provided with a gas nozzle, the top surface of the conical frustum is provided with a top annular groove, and the top annular groove passes through The air hole on the top surface communicates with the air chamber, the side surface of the frustum is provided with a side annular groove, and the side annular groove communicates with the air chamber through the side air hole, and the turntable is arranged above the base and can be Keep a certain distance from the base under the action of gas.

Further, it includes a base and a turntable, the side of the base facing the turntable is provided with a conical frustum, the turntable is provided with a turntable groove corresponding to the conical frustum, the base is provided with an air chamber, and the air chamber is far away from the One side of the turntable is provided with a gas nozzle, the top surface of the frustum is provided with an annular groove on the top surface, the annular groove on the top surface is communicated with the air chamber through the air hole on the top surface, and the side surface of the frustum is provided with a top surface. There is a side annular groove, the side annular groove communicates with the air chamber through the side air hole, the turntable is arranged above the base, and can maintain a certain distance from the base under the action of gas.

Further, the ratio of the opening width of the annular groove on the top surface to the diameter of the air hole on the top surface is a, where 2≤a≤4;

The ratio of the opening width of the side annular groove to the diameter of the side air hole is b, where 2≤b≤4.

Further, the cross-section of the annular groove on the top surface is semicircular; the cross-section of the annular groove on the side surface is semicircular.

Further, the side surface of the frustum is provided with two side annular grooves.

Further, the center distance between the two side annular grooves is 8-10mm.

Further, the air pressure of the air chamber is 50-100KPa.

Further, the plane error of the base is less than 0.02mm, and the plane error of the turntable is less than 0.02mm.

Further, the materials of the base and the turntable are both metal.

The invention also relates to a vinyl record player, comprising: a base, an air-floating turntable, a driver and a tone arm, the air-floating turntable includes a base and a turntable, and the air-floating turntable is arranged on the base through the base On the seat, the driver is arranged on the base, the driver is connected with the turntable through a belt, a disc holder is arranged in the middle of the turntable, and the tone arm is arranged on the base to be in contact with the surface of the disc. To realize the playback function, the air-floating turntable is the air-floating turntable described in any one of the above.

The beneficial effects of the present invention are as follows: an air-floating turntable with a reasonable air path structure is provided, which can reliably filter the vibration from the horizontal and vertical directions, effectively avoid the distortion of the playing sound caused by the vibration interference, and let the vinyl record player play back. The music has better signal-to-noise ratio indicators, less distortion, and purer sound quality.

Description of drawings

The specific structure of the present invention will be described in detail below in conjunction with the accompanying drawings:

Fig. 1 is a perspective schematic diagram of the explosion structure of the air-floating turntable of the present invention;

Fig. 2 is another perspective schematic diagram of the explosion structure of the air-floating turntable of the present invention;

FIG. 3 is a schematic diagram of the cross-sectional structure of the air-floating turntable of the present invention;

Fig. 4 is the overall structure schematic diagram of the vinyl record player of the present invention;

1- base; 11- frustum; 111- top surface annular groove; 112- top surface air hole; 12- air chamber groove; 121- side annular groove; 122- side air hole;

2- turntable; 21- turntable groove; 22- record holder;

3-air chamber cover; 31-air nozzle; 32-seal ring groove;

100-base; 200-air-floating turntable; 300-driver; 301-belt; 400-tone arm.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the descriptions involving "first", "second", etc. in the present invention are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

Example 1

Please refer to FIGS. 1 to 3 . An air-floating turntable includes a base 1 and a turntable 2 . The base 1 faces the turntable 2 and is provided with a cone 11 , and the turntable 2 is provided with a cone corresponding to the cone 11 . Turntable groove 21, the base 1 is provided with an air chamber, the side of the air chamber away from the turntable 2 is provided with a gas nozzle 31, and the top surface of the cone frustum 11 is provided with a top surface annular groove 111, so The top annular groove 111 communicates with the air chamber through the top surface air hole 112, the side surface of the frustum 11 is provided with a side annular groove 121, and the side annular groove 121 communicates with the air chamber through the side air hole 122. The turntable 2 is arranged above the base 1, and the turntable can maintain a certain distance from the base 1 under the action of gas.

In this embodiment, the bottom of the base is provided with an air chamber groove 12, the air chamber groove 12 is covered with an air chamber cover 3, an air chamber is formed between the air chamber cover 3 and the air chamber groove 12, and the air chamber cover 3 is provided with The gas nozzle 31 is pumped into the gas chamber through the gas nozzle 31, and the gas is ejected from the top surface annular groove 111 and the side annular groove 121 through the top surface air holes 112 and the side air holes 122 on the conical frustum 11 of the base 1, A bearing gas film is formed between the base 1 and the turntable 2 , so that the turntable 2 is suspended above the base 1 .

In order to ensure the airtight performance of the air chamber cover 3 and the air chamber groove 12 , the air chamber cover 3 is provided with a sealing ring groove 32 , and a sealing ring is arranged in the sealing ring groove 32 .

The angle between the side surface of the frustum and the horizontal plane is 40-50°. Preferably, when the included angle is 45°, the processing difficulty of the frustum and the air flotation effect are easier to balance.

As can be seen from the above description, the beneficial effects of the present invention are: an air-floating turntable with a reasonable air path structure is provided, which can reliably filter vibrations from the horizontal and vertical directions, effectively avoid the distortion of the playing sound caused by the vibration interference, Let the music played by the vinyl record player have a better signal-to-noise ratio index, less distortion, and purer sound quality.

Example 2

On the basis of Embodiment 1, the annular groove 111 on the top surface communicates with the air chamber through at least two air holes 112 on the top surface, and the two air holes 112 on the top surface are evenly distributed along the circumferential direction;

The side annular groove 121 communicates with the air chamber through at least two side air holes 122, and the two side air holes 122 are evenly distributed along the circumferential direction.

In this embodiment, a plurality of air holes communicating with the air chamber are evenly arranged at the bottom of the groove along the circumferential direction, so that the thickness of the air film is more uniform, the bearing capacity is stronger, and the air flotation effect is more stable.

Example 3

On the basis of Example 2, the ratio of the opening width of the annular groove 111 on the top surface to the diameter of the air hole 112 on the top surface is a, where 2≤a≤4;

The ratio of the opening width of the side annular groove 121 to the diameter of the side air hole 122 is b, where 2≤b≤4.

In this embodiment, in order to allow the gas in the air chamber to be ejected through the air hole smoothly, the opening width of the groove should be larger than the diameter of the air hole. To achieve a good spray effect.

Preferably, when the ratio of the opening width of the annular groove on the top surface to the diameter of the air hole on the top surface is 3:1, that is:

The opening width of the annular groove on the top surface is 3mm, the diameter of the air hole on the top surface is 1mm, the opening width of the annular groove on the side surface is 3mm, and the diameter of the air hole on the side surface is 1mm, the carrier gas film can be well formed between the base and the turntable. .

Example 4

On the basis of Embodiment 3, the cross section of the top annular groove 111 is semicircular; the cross section of the side annular groove 121 is semicircular.

In this embodiment, when the cross-sectional shape of the groove is a semicircle, the gas can be better ejected from the gas chamber through the air hole, and a bearing gas film is formed between the turntable and the base. Preferably, when the radius of the groove is 1.5 mm, the carrier gas film can be formed better.

Similarly, the cross-sectional shape of the groove can also be a trapezoidal structure or a conical structure, etc., which are wide at the top and narrow at the bottom.

Example 5

On the basis of Embodiment 4, the side surface of the frustum 11 is provided with two side annular grooves.

In this embodiment, two side annular grooves that are parallel to each other are arranged on the side surface of the frustum, which can more stably generate an air film so that the turntable is suspended above the base.

Example 6

On the basis of Example 5, the center-to-center spacing of the two side annular grooves is 8-10 mm.

In this embodiment, the two side annular grooves are set at a certain distance, so that the gas film can be formed better.

Preferably, the distance between the two side annular grooves is 9 mm.

Example 7

On the basis of Example 6, the air pressure of the air chamber is 50-100 KPa.

In this embodiment, the air pressure of 50-100KPa can make the turntable weighing 10kg stably float above the base.

Example 8

On the basis of Example 7, the plane error of the base 1 is less than 0.02 mm, and the plane error of the turntable 2 is less than 0.02 mm.

In this embodiment, in order to ensure that the gas film can be well generated, the plane errors of the base and the turntable must be both less than 0.02 mm.

Example 9

On the basis of Example 8, the base 1 and the turntable 2 are made of metal.

In this embodiment, the base and the turntable are made of metal material, so that the air-floating turntable is not easily affected by the airflow, and the operation is more stable.

Example 10

Please refer to FIG. 4 , the present invention also relates to a vinyl record player, comprising: a base 100 , an air-floating turntable 200 , a driver 300 and a tone arm 400 , the air-floating turntable 200 includes a base 1 and a turntable 2 , and the air-floating turntable 200 includes a base 1 and a turntable 2 . The turntable 200 is arranged on the base 100 through the base 1 , the driver 300 is arranged on the base 100 , and the driver 300 is connected with the turntable 2 through a belt 301 , and the middle of the turntable 2 is provided with In the disc holder 22, the tone arm 400 is disposed on the base 100 so as to be in contact with the surface of the disc to realize the playback function, and the air-floating turntable 200 is the air-floating turntable described in any one of the above embodiments.

In this embodiment, the base of the air-floating turntable is fixed on the base, the air nozzle at the bottom of the base is connected with an air supply device, the driver is arranged on the base and located on one side of the air-floating turntable, and the driver is connected to the turntable through a belt, The side surface of the turntable is correspondingly provided with a belt groove, one end of the belt is sleeved with the belt groove of the turntable, and the other end is sleeved with the driving wheel of the driver.

When working, place the record on the record holder of the turntable, press the record with a fixing member (not marked in the figure), and pump gas into the base of the air-floating turntable through the air supply device, so that the turntable is suspended above the base, and then Start the driver, make the driver drive the turntable to rotate, and then put the stylus on the tone arm on the rotating record, so as to realize the playback function.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims (10)

1. An air-float rotary disk is characterized in that: including base and carousel, the base towards the one side of carousel is equipped with the frustum, the carousel corresponds the frustum is equipped with the carousel recess, the base is equipped with the air chamber, the air chamber is kept away from one side of carousel is equipped with the air cock, the top surface of frustum is equipped with top surface annular groove, top surface annular groove pass through the top surface gas pocket with the air chamber intercommunication, the side of frustum is equipped with side annular groove, side annular groove pass through the side gas pocket with the air chamber intercommunication, the carousel sets up in the top of base to can keep certain interval with the base under the gas action.

2. The air-floating rotary disk of claim 1, wherein: the top surface annular groove is communicated with the air chamber through at least two top surface air holes, and the two top surface air holes are uniformly distributed along the circumferential direction;

the side annular groove is communicated with the air chamber through at least two side air holes, and the two side air holes are uniformly distributed along the circumferential direction.

3. The air bearing rotary disk of claim 2, wherein: the ratio of the opening width of the top surface annular groove to the diameter of the top surface air hole is a, wherein a is more than or equal to 2 and less than or equal to 4;

the ratio of the opening width of the side annular groove to the diameter of the side air hole is b, wherein b is more than or equal to 2 and less than or equal to 4.

4. The air bearing rotary disk of claim 3, wherein: the section of the top surface annular groove is semicircular; the section of the side annular groove is semicircular.

5. The air bearing rotary disk of claim 4, wherein: two side annular grooves are formed in the side face of the frustum.

6. The air bearing rotary disk of claim 5, wherein: the center distance between the two side annular grooves is 8-10 mm.

7. The air-floating rotary disk of claim 6, wherein: the air pressure of the air chamber is 50-100 KPa.

8. The air bearing rotary disk of claim 7, wherein: the plane error of base is less than 0.02mm, the plane error of carousel is less than 0.02 mm.

9. The air bearing rotary disk of claim 8, wherein: the base and the turntable are made of metal.

10. A black glue record player is characterized in that: the method comprises the following steps: the turntable comprises a base and a turntable, the air-flotation turntable is arranged on the base through the base, the driver is arranged on the base and connected with the turntable through a belt, a record seat is arranged in the middle of the turntable, the tone arm is arranged on the base and is in contact with the surface of a record to realize a playing function, and the air-flotation turntable is the air-flotation turntable as claimed in any one of claims 1 to 9.

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