JP2003272101A - Stabilizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stabilizer capable of optionally and continuously varying a pressing force on a record disk. <P>SOLUTION: The stabilizer comprises: a metallic outer cylinder having a cylindrical inner face and a bottom face and having a hole, in the center of the bottom face, into which a top part of a drive shaft of a record player and made of a magnetic material is inserted; and a metallic cylinder to be inserted in the cylindrical space and vertically movable. In the stabilizer, a permanent magnet is embedded in the inside thereof. The pressing force of the bottom face of the outer cylinder on the record disk can be varied by the vertical movement of the cylinder when the stabilizer is placed in the center of the record disk. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stabilizer, and more particularly to a stabilizer capable of continuously changing a pressing force applied to a record board by one stabilizer.

[0002]

2. Description of the Related Art Conventionally, CD has been widely used as a recording medium for music, but the old resin record board is still very popular and many users love it. When listening to music using these vinyls, the vinyls have more or less some subtle warping and other natural vibration coefficients that occur during rotation, and subtle changes and distortions in the sound during voice playback. Is occurring.

Stabilizers are widely used as a tool for suppressing the deformation and natural vibration coefficient of such a record board and bringing the record board into close contact with a rubber sheet on a turntable, as shown in FIG. 4, for example. The stabilizer has a weight of about 100 to 800 g, and a hole into which the top of the rotary shaft protruding from the turntable is inserted is provided at the center of the bottom surface. The top of the rotary shaft is inserted into this hole. By the load of the stabilizer, the record board is pressed against the rubber sheet, and the deformation and natural vibration coefficient of the record board are corrected.

[0004]

As the above-mentioned conventional stabilizers, various types are used, but each record board has its own deformation such as warp and a natural vibration coefficient, and one stabilizer is used. Therefore, it is impossible to correct the deformation and the natural vibration coefficient of a large number of record discs, and it is required to prepare stabilizers of various weights and replace the stabilizers with the record discs. Even if you prepare more stabilizers,
It is also difficult to find a suitable weight stabilizer for a particular record.

Therefore, an object of the present invention is to change the pressing force applied to a record board arbitrarily and continuously by one stabilizer for the record boards having different deformation degrees and natural vibration coefficients. It is to provide a stabilizer that can be enjoyed.

[0006]

The above object can be achieved by the present invention described below. That is, the present invention has a cylindrical outer surface and a bottom surface, and a metal outer cylinder having a hole at the center of the bottom surface into which the top of the rotating shaft of the record player is inserted, A stabilizer comprising a vertically movable metal columnar body inserted in a space, and a permanent magnet embedded in the columnar body, the stabilizer being placed at the center of a record board. Sometimes
Provided is a stabilizer characterized in that a pressing force exerted by the bottom surface of the outer cylinder against a record board can be varied by vertically moving the columnar body.

In the present invention, the vertical movement of the cylindrical body in the outer cylinder is performed by the taps (screws) formed on the outer circumference of the cylindrical body and the cylindrical inner surface; the permanent magnet except for the bottom surface thereof. Covered with a magnetic material layer; a synthetic resin layer is provided between the permanent magnet and the magnetic material layer; and a handle for rotating the cylinder is provided on the top of the cylinder. It is preferable that the outer cylinder body and the columnar body are made of aluminum.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail with reference to the preferred embodiments. FIG. 1 is a diagram for explaining an example of the external appearance of the stabilizer of the present invention. As shown in FIG. 1, the surface shape of the outer cylinder 1 is roughly cylindrical, but it is essential that it be cylindrical. Instead, it may be another shape such as a hexagon or an octagon. Further, in the side view of FIG. 1, some grooves 2 are formed on the outer cylinder surface, but these grooves 2 are not essential and the outer peripheral surface may be flat. However, if a large number of irregularities are formed on the surface as shown in the side view of FIG. 1, it is difficult for the stabilizer to slip when held by hand, and the risk of accidentally dropping the stabilizer on the record board is reduced.

The cylindrical body indicated by reference numeral 3 in FIG. 1 will be described later. Reference numeral 4 is a handle for rotating the cylindrical body 3, and the handle 4 is not essential in the present invention. Reference numeral 5 denotes the bottom surface of the outer cylinder 1, and the bottom surface 5 is provided with a hole 6 into which the top of the rotary shaft of the record player is inserted. This hole 6
Is essential in the present invention.

The best illustration of the stabilizer of the present invention is FIG. 2 which is a cross-sectional view of FIG. As shown in FIG. 2a, the stabilizer of the present invention has a cylindrical inner surface 7 and a bottom portion 8, and a hole 6 into which a top portion 9 of a rotary shaft of a record player made of a magnetic material is inserted at the center of the bottom portion 8. And a metal columnar body 3 which is vertically movable by being inserted into a space formed by the cylindrical inner surface 7 and which has a metal outer cylinder 1 having The permanent magnet 11 is embedded. The stabilizer is shown in FIG.
As shown in FIG. 5, when the disc is placed at the center of the record board, the pressing force of the bottom surface portion 12 of the outer cylinder 1 against the record board can be varied by the vertical movement of the columnar body 3. ing.

FIG. 2a shows a state in which the permanent magnet 11 and the top of the rotary shaft 9 are close to each other. In this state, the magnetic force of the permanent magnet 11 acts most strongly on the top of the rotating shaft 9, and the bottom surface 12 of the stabilizer applies a large pressing force to the record board by the attraction force of the magnetic force in addition to the weight of the stabilizer itself. . FIG. 2b shows a state in which the cylindrical body 3 is raised to the distance of the arrow X1 in the outer cylinder 1, and the attraction force of the permanent magnet 11 to the top of the rotating shaft 9 decreases in proportion to the distance of X1. ing. Therefore, in the state of FIG. 2b, the pressing force of the bottom surface 12 of the stabilizer against the record board is reduced as compared with the state shown in FIG. 2a. Further, as shown in FIG. 2c, by further raising the cylindrical body 3 to the distance X2, the pressing force of the stabilizer against the record board is further reduced.

FIG. 2 shows three cylinders 3 having different heights, but in reality, the position of the cylinder 3 can be continuously raised and lowered. Therefore, the pressing force of the stabilizer on the record board can be continuously changed and finely adjusted. Therefore, even if there are many records to be viewed and the degree of deformation and the natural vibration coefficient are different, the deformation and natural vibration coefficient of the record can be controlled by one stabilizer of the present invention. Even one record board,
With one stabilizer, you can freely adjust the sound quality for your record.

A further preferred embodiment of the stabilizer of the present invention will be described. The vertical movement of the cylindrical body 3 in the outer cylinder 1 may be performed by any method, but as shown in FIG. 2, taps (thread grooves) that mesh with each other are formed on both the outer periphery 13 of the cylindrical body 3 and the inner surface 7 of the cylindrical space 10. It is preferable that the cylindrical body 3 can be continuously moved up and down within the space 10 of the outer cylinder 1 by forming the cylindrical body 3 and rotating the cylindrical body 3.

The permanent magnet 11 is fixed in the space formed in the cylindrical body 3 except for the bottom surface 14 of the permanent magnet 11. The permanent magnet 11 may have any form, but in the example shown in FIG. 2, ten disk-shaped magnets are stacked and filled. The number of magnets is not limited, and may be one or a plurality of other magnets. These permanent magnets 11 are preferably covered with a magnetic material layer 15 except for the bottom surface 14. By coating the permanent magnet 11 with the magnetic material layer 15 in this way,
The magnetic field generated by the permanent magnet 11 can be prevented from leaking to the periphery of the stabilizer, and the magnetic force can be concentrated below the cylindrical body 3 (around the top of the rotary shaft 9). The adverse effect on the cartridge (needle) of can be eliminated.

In the example shown in FIG. 2, the permanent magnet 1 is used.
A layer 16 made of a synthetic resin such as a polyester resin is provided around the circumference of 1. The synthetic resin layer 16 is for the purpose of holding a large number of permanent magnets 11 and is not essential in the present invention. The function of the stabilizer of the present invention does not change even without the synthetic resin layer 16. A handle 4 for rotating the columnar body 3 is preferably provided on the upper part of the columnar body 3, but if the columnar body 3 can be rotated by hand, the handle 4 may be omitted. The handle 4 is not limited to the illustrated shape, and may have any shape.

The outer cylinder body 1 and the cylindrical body 3 as described above are preferably made of metal, and are preferably made of aluminum in consideration of lightness and the like. The material of the handle 4 is not particularly limited, and may be iron, aluminum, brass or the like. Further, in order to fix the permanent magnet 11, the magnetic material layer 15, the synthetic resin layer 16 and the like inside the cylindrical body 3, for example, an epoxy-based adhesive or the like can be used, if necessary.
A strong magnet such as neodymium is preferably used as the permanent magnet 11, and any magnetic material such as iron, an alloy of iron and another metal, or iron oxide is used as the magnetic material 15. It is possible.

[0017]

EXAMPLES The present invention will be described in more detail with reference to the examples shown in FIG. First, the aluminum columnar body shown in FIG. 3a was machined, four φ4 mm brass round bar insertion holes were provided on top of it, and a fine spiral thread groove was formed on the periphery, with a φ32.4 mm deep bottom. Create a space of 20 mm. An iron cylinder of the shape and dimensions shown in Figure 3b is then created. The permanent magnet shown in FIG. 3d is fixed by the polyester ring shown in FIG. 3c, and this fixed object is inserted into the cylinder shown in FIG. 3b. At this time, if necessary, an epoxy-based adhesive or the like is used. The structure thus formed is inserted into the space shown in FIG. 3a, and if necessary, fixed with an adhesive such as epoxy. Finally, fix the four handles.

On the other hand, the stabilizer of the present invention is obtained by forming an outer cylinder as shown in FIG. 3e and screwing the structure into the space. This stabilizer is
The cross-sectional shape is shown in FIG. 2, and by rotating the handle, the columnar body can be moved up and down as shown in FIGS. When this stabilizer is used as shown in Fig. 4, the record board on the rubber sheet can be pressed with an arbitrary pressing force, and by appropriately changing the pressing force, the deformation of the record board and the natural vibration coefficient are adjusted, and the maximum You can enjoy excellent voice or desired voice reproduction. Further, the number of the stabilizers is only one, and it is possible to appropriately cope with the deformation state and the natural vibration coefficient of each recording disc with respect to any other recording disc.

[0019]

As described above, according to the present invention, with respect to a record board having a different deformation degree and a different natural vibration coefficient, one stabilizer can arbitrarily and continuously apply a pressing force to the record board. It is possible to provide a stabilizer that can be changed to.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an appearance of a stabilizer according to an example of the present invention.

FIG. 2 is a diagram illustrating a structure of a stabilizer according to an example of the present invention.

FIG. 3 is a diagram illustrating the production of a stabilizer according to an example of the present invention.

FIG. 4 is a diagram illustrating the use of a conventional stabilizer.

[Explanation of symbols]

1: Outer cylinder 2: Groove 3: Cylindrical body 4: Handle 5: Bottom of outer cylinder 6: hole 7: Inner surface of cylindrical space 8: bottom 9: Rotation axis 10: Space 11: Permanent magnet 12: bottom 13: Outer circumference of cylindrical body 14: Bottom of cylinder 15: Magnetic material layer 16: Synthetic resin layer

Claims (6)

[Claims] 1. A metal outer cylinder having a cylindrical inner surface and a bottom surface, and having a hole into which a top of a rotary shaft of a record player made of a magnetic material is inserted in the center of the bottom surface, and the cylindrical space. A stabilizer comprising a vertically movable metal columnar body inserted therein, and a permanent magnet embedded inside the columnar body, the stabilizer being placed at the center of a record board. A stabilizer capable of varying the pressing force applied to the record board by the bottom surface of the outer cylinder by moving the columnar body up and down. 2. The stabilizer according to claim 1, wherein the vertical movement of the cylindrical body in the outer cylinder is performed by taps (screws) formed on the outer circumference of the cylindrical body and the cylindrical inner surface. 3. The stabilizer according to claim 1, wherein the permanent magnet is covered with a magnetic material layer except for the bottom surface thereof. 4. The stabilizer according to claim 1, further comprising a synthetic resin layer between the permanent magnet and the magnetic material layer. 5. The stabilizer according to claim 1, wherein a handle for rotating the cylindrical body is provided on an upper portion of the cylindrical body. 6. The stabilizer according to claim 1, wherein the outer cylinder body and the columnar body are made of aluminum.