DE202005003400U1 - Floating tangential pick-up arm for a record player has a pick-up arm trough filled with a liquid and a pick-up needle that is automatically moved along a tangent to a record groove - Google Patents

Abstract

Floating tangential pick-up arm (P9) for a record player has a sound pick mounted on an open and closed pick-up arm bracket construction. A pick-up arm trough (P3) is filled with liquid. The pick-up needle (P12) automatically moves along the tangent (P1) of a record groove as it is moved towards the center of the turntable.

Description

State of Tangential tonearm Tangential tonearm according to the prior art

During the Playing the record (Z.1 - P 11) moves the stylus (Z.1 - P 12) of the pickup (Z.3 - P 8) on the tangent (Z.1 - P 1), which in the tangential tonearm in a straight line (Z.1 - P 1) from the utmost Radius (Z.1 - P 25) of the turntable (Z.1 - P 13) to its center (Z.1 - P 18).

Of the Path of the stylus is running thus exactly on the position, which originally the cutting stylus with Cutting the transferred to him Information in the paint film or metal foil has taken.

Consequently deleted the horizontal track error angle (deviation 0 ° on the tangent) and the skating force the tangential tonearms, which are both causes of distortion.

Of the Tonearm / pickup is mounted on a carriage. This moves on or on a guide rod / rail or rope construction, which is aligned parallel to the tangent is.

This requires high mechanical precision to all involved sliding surfaces, because these are extremely low-friction have to be because they are crucial for are the sampling behavior of the pickup and so on the sound quality decides.

Around to follow the groove specification of the record, makes an electronic controlled drive motor the necessary feed for the carriage, on which the tonearm / pickup is mounted.

This applied principle has the following disadvantage:

Of the needed Feed for the tangential tonearm must be done with a controlled motor be because of the friction forces of the pickup slide on the guide rod / rail or rope construction are so big that an independent, free movement of the tonearm by the given groove guide the Vinyl record on the tangent to the turntable center is impossible.

effects

• - There these frictional forces Pickup Carriage / Guide Bar / Rail or rope construction on the way to the turntable center overcome Need to become, a controlled motor provides the necessary feed. These permanent rules are necessary to the pickup needle of the pickup in the record groove respectively. at this process will be disrupted generated to which the tangential tonearm is exposed. they seem negatively affect the sampling behavior of the pickup and thus distort the useful signal.

description

Of the in the protection claim 1,2,3 and 4 specified invention is the problem underlying, for the reproduction of an unadulterated Sound of the medium record, with this buoyant tangential tonearm, its buoyant body in a liquid-filled tub floats / hovers thereby an unrestricted freedom of movement for the tonearm / pickup to reach out to an outside, through the groove guide of the Record specified direction of movement, directed force in unterstützender-, regulatory or corrective, by e.g. controlled engines, omitted can be.

Floating tangential tonearm

working principle

By the rotational movement (Z.1 + 3 - P 15) of the turntable (Z.1 - P 13), e.g. 33 1/3 U / pm, exercises the disk rotating in a clockwise direction (Z.1 - P 11) a resistance to the in the record groove (Z.1 - P 11) attached stylus (Z.1 + 3 - P 12) of the pickup (Z.3 - P 8), which has a tensile force (Z.1 - P 24).

These Tensile force (Z.1 - P 24) / (Z.3 - P 24) is sufficient, the gliders (Z.1 - P 4) / (Z.3 - P 4) of the buoyancy body (Z.1 - P 2) / (Z.3 - P2 ) with the Tone Arm / Tonearm / Pickup (Z.3 - P 5.8 + 9) to the guide rail (Z.1 - P 6) / (Z.3 - P 6) of the tonearm trough (Z.1 - P 3) / (Z.3 - P 3) to steer.

The occurring friction forces between the sliding surfaces (Z.1 + 3 - P 4) of the buoyant body (Z.1 + 3 - P2) and the guide rail (Z.1 + 3 - P 6) are lower than the forces, which the record groove on the pickup or the stylus (Z.1 - P 12), self-employed (Z.1 - P 27) always the groove specification of the record on the tangent (Z.1 - P 1), towards the center of the record (Z.1 - P 18), following, to move.

equipment

• stand body (Z.1 - P 14) for the recording of the Tonarmwanne (Z.1,2 + 3 - P 3)
• Tonearm tray (Z.1,2 + 3 - P 3) with guide rail (Z.1 + 3 - P 6)
• Float (Z.1,2 + 3 - P 2) with slider (Z. 1 + 3 - P 4)
• Tonarmbügel (Z.1,2 + 3 - P 5) to record the tonearm (Z.3 - P 9)
• Tonearm / pickup (Z.3 - P 8 + 9)
• Shadow Theory (Z.1,2 + 3 - P 7)
• liquid (Z.1,2 + 3 - P 16)

construction

Of the Tonearm is on an open backwards or closed tonearm construction, in turn, at right angles to the buoyant body that is in the liquid the Tonarmwanne is floating or floating, is fixed.

The Position of the Tone Arm with the tonearm / pickup on the buoyant body is chosen so that the weight evenly this is distributed and he thus horizontally to all sides aligns.

The Tone arm tub is dimensioned so that this the disk drive for stability spanned on both sides.

Adjustment of the tangent basic setting

The guide rail in the Tonarmwanne, which the leadership the tonearm on the way to the center of the record and thus takes over the stylus of the pickup in the optimal position must be parallel to the tangent the turntable be aligned.

If put the stylus of the pickup on the record is, must Pickup first set to horizontal position (Z.3 - P 10) to exclude the vertical tracking angle.

These Adjustment requires the supply of liquid into the Tonarmwanne, until the upwardly moving buoyant body with Tone arm / tonearm / pickup construction this reached above described position.

A straight rail (= "shadow gauge"), the laterally outside at the Tonearm tray top edge to the guide rail is attached and protrudes laterally, serves as an adjustment aid to the tangent of the turntable and the guide rail align in the Tonarmwanne parallel to each other.

A Another adjustment aid is a template which points to the central axis the turntable is plugged.

she indicates the tangent and serves as a default for the optimal scan of the pickup.

default the stylus on the tangent

A switched light source on the front side above the Tonarmwanne is placed so that the shadow of the shadow gauge is plugged onto the Stencil, which rests on the Schallpatte, falls.

The Setting switched light source should be chosen so that creates a sharp contrast between light / dark.

The Shadow line is positioned by the light source switched on brought to coincide with the recorded line of the template.

Becomes the pickup is placed on the rotating record the pickup needle either in the light / dark range or exactly on the shadow line, the tangent.

In the position light / dark becomes the activated light source now Positioned so that the pickup needle exactly on the Shadow line is running.

To off the drive and the removal of the pickup from the Record is placed on the template with the recorded tangent.

The Tangent of the template is now either in the light or in the dark area. Now the record drive with the template moved so far, either forward or back, that the shadowline and the recorded tangent of the template exactly parallel to each other run.

Becomes the pickup now put back on the record, so extends the scanning of the pickup needle exactly on the tangent.

During the Playback of the record can be characterized by the sharp contrast light / dark with the light source switched on the position of the stylus be controlled to the tangent at all times.

fluid system Floating tangential tonearm

equipment

• liquid reservoir (Z. 2 - P 20)
• Shut-off device (valve) (Z. 2 - P 21)
• Pump (Z. 2 - P 22)
• Tonearm tray (Z.1,2 + 3 - P 3)
• Fill / drain conduit (Z. 2 - P 19)

function

In the liquid line (Z. 2 - P 19), between the liquid reservoir (Z. 2 - P 20) and the liquid pump (Z. 2 - P 22) a shut-off device (Z. 2 - P 21) is integrated. On the pressure side leads the liquid line into the Tonarmwanne (Z. 2 - P 3), wherein the liquid line end (Z. 2 - P 28) far below the liquid level (Z. 2 - P 29) and thus a continuous liquid connection of the Tonarmwanne (Z. 2 - P 3) to the liquid reservoir (Z. 2 - P 20) which is interrupted by the obturator (Z. 2 - P 21) is.

The Lowering the fluid level (Z. 2 - P 30) in the Tonarmwanne (Z. 2 - P 3) is opened by opening the Obturator (Z. 2 - P 21) is reached, with the liquid from the Tonarmwanne independently (Z. 2 - P 32) the inlet / outlet line (Z. 2 - P 19) through the pump body (Z. 2 - P 22) into the liquid reservoir (Z. 2 - P 20) flows back, which is placed below the Tonarmwanne.

The Raising the fluid level (Z. 2 - P 30) in the Tonarmwanne (Z. 2 - P 3) is opened by opening the Shut-off valve (Z. 2 - P 21) and switching on the pump (Z. 2 - P 22), which required the Liquid over the Inlet / drain line (Z. 2 - P 19) from the liquid reservoir (Z. 2 - P 20) into the Tonarmwanne pumps (Z. 2 - P 31).

Fixing the vertical Track error angle

conditioned by playing different thickness records and the resulting deviation of the stylus from the tangent and the vertical tracking skew set therefrom the horizontal orientation (Z.3 - P 10) of the pickup or the Adjust the pickup to the tangent by lowering or raising the liquid level done in the Tonarmwanne.

Has been the basic setting of the tonearm made with a "thin" record and it follows a change to a thicker record, so is an adaptation necessary, because a vertical track error angle has been set, by raising the fluid level is compensated. It is opened by opening the valve and simultaneously Connecting the pump so much liquid pumped into the Tonarmwanne until the pickup needle again located on the tangent.

Becomes a thinner one Record is released in comparison to the previous one, by opening the Valve in the inlet / drain line as long as liquid in the liquid reservoir returned, until the pickup needle is back on the tangent.

reached advantages

• - improvement the soundscape, especially naturalness, dynamics and spatial Presentation - increased listening pleasure
• - optimal and quickly adjusting the tonearm to different thicknesses Records in relation to the tangent
• - occurrence of minimal frictional forces on bearings, resulting in improved scanning capability
• - reduced bearing noise and thus a differentiated, spatial sound image

Legend to the drawings 1, 2 and 3

• Z = drawing (for example: Z.1 - P5 = drawing 1, position 5)
• P = position

Position Explanation Floating tangential tonearm

P1

tangent Turntable / record

P2

 buoyancy

P3

 Tonarmwanne

P4

 skid

P5

 Tonarmbügel

P6

 guide rail

P7

 Stealth Lore

P8

 pickup

P9

 tonearm

P10

 horizontal Position of the pickup

P11

 vinyl record

P12

 stylus

P13

 records plate

P14

 Stand body for the recording the Tonarmwanne

P15

 direction of rotation of the turntable

P16

 Liquid, the buoyancy of the float allows

P17

 fixation the tonearm bow

P18

 central axis of the turntable

P19

 Supply / drain line

P20

 liquid reservoir

P21

 shutoff

P22

 pump

P23

 light source

P24

 movement direction of the buoyancy body Traction of the

stylus

P25

 outermost Radius of the turntable

P26

 Shadow / Shadow Line

P27

 movement direction of the buoyant body with tonearm

P28

 cable end the filling / drain line

P29

 liquid level

P30

 liquid level

P31

 movement direction the liquid (to Tonarmwanne)

P32

 movement direction the liquid (to the liquid reservoir)

Systems (page 1-3)

• Drawing 1
• Drawing 2
• Drawing 3

Claims (4)

Floating tangential tonearm, characterized in that the tonearm (Z.3 - P 9) with pickup (Z.3 - P 8) is mounted on an open or closed tonearm bow construction (Z.1,2 + 3 - P 5), which in turn is connected to the buoyancy body (Z.1,2 + 3 - P 2) (Z.3 - P 17), on whose longitudinal side (Z.1 - P 13) slide / sliding surfaces (Z.1 - P 4) / (Z.3 - P 4) are incorporated, and in a filled with a liquid Tonarmwanne (Z.1,2 + 3 - P 3), in which a guide rail (Z.1 +3 - P 6) is fixed, which is aligned parallel to the tangent (Z.1 - P 1) of the turntable (Z.1 - P 13), "floats" or "floats", along with the buoyant body (Z.1,2 + 3 - P 2) slides along the tonearm / pickup (Z.3 - P 8 + 9) / (Z 1 - P2) and, by means of the attached stylus (Z 1 + 3 - P 12) during the playback of a record, moves independently on the tangent (Z .1 - P 1), the course of the predetermined groove guide the rotating record (Z.1 - P 11), to the central axis (Z.1 - P 18) of the turntable (Z.1 - P 13). Floating tangential tonearm for protection claim 1 characterized in that the lifting, in the Tonarmwanne (Z. 2 - P 3) Floating or floating buoyancy body (Z.1,2 + 3 - P 2) with Tone Arm / Tonearm / Pickup (Z. 2 - P 5 + 8 + 9) the liquid level (Z. 2 - P 30) is done by the obturator (Z. 2 - P 21) in the inlet / outlet line (Z. 2 - P 19) is opened and on the switched on pump (Z. 2 - P 22) as much liquid from the liquid reservoir (Z. 2 - P 20) the cable end protruding into the tonearm trough (Z. 2 - P 28) the inlet / outlet line (Z. 2 - P 19), in the Tonarmwanne (Z. 2 - P 3) is pumped until the on the record (Z.2 - P 11) patched Scanning needle (Z.1 - P 12) of the pickup (Z.3 - P 8) again the Position on the set tangent (Z.1 - P 1) / (Z.3 - P 1) of the turntable (Z.1 - P 13) or the pickup (Z.3 - P 8) is aligned horizontally (Z.3 - P 10). Floating tangential tonearm for protection claim 1 thereby in that the lowering of the in the Tonarmwanne (Z. 2 - P 3) floating or floating buoyancy body (Z.1,2 + 3 - P 2) with Tone Arm / Tonearm / Pickup (Z. 2 - P 5 + 8 + 9) the liquid level (Z. 2 - P 30) happens by adding so much liquid from the tonearm tray (Z. 2 - P 3) dissipated becomes, by the shut-off device (Z. 2 - P 21) in the inlet / outlet line (Z. 2 - P 19), with the end of the line (Z. 2 - P 28) in the liquid dips in and below the liquid level (Z. 2 -P 30) of the in the Tonarmwanne (Z. 2 - P 3) located liquid (Z. 2 - P 16) remains open will, and the liquid independent (Z. 2 - P 32) through the pump body (Z. 2 - P 22) the inlet / outlet line (Z. 2 - P 19) into the liquid reservoir (Z. 2 - P 20) flows back until the on the record (Z.2 - P 11) patch needle (Z.1 - P 12) of the pickup (Z.3 - P 8) again the position on the Tangent (Z.1 - P 1) / (Z.3 - P 1) of the turntable (Z.1 - P 13) or the pickup (Z.3 - P 8) is aligned horizontally (Z.3 - P 10). Floating tangential tonearm for protection claim 1 characterized in that the setting of the pickup needle (Z.3 - P12) on the tangent (Z.3 - P 1) / (Z.1 - P 1 + 12) of the turntable (Z.1 - P 13) a "shadow lesson" (Z.1,2 + 3 - P 7), one straight rail, which parallel to the guide rail of Tonarmwanne (Z.1 + 3 - P 6) fixed to the Tonarmwannenaußenkante (Z.1 - P 7 + 3) is and is made, and about these, outside Laterally projecting rail, a suitable switched light source (Z. 2 - P 23) / (Z.3 - P 23) so a contrast of light / dark (Z. 2 + 3 - P 26) on the record (Z. 2 + 3 - P 11) or tangent adjustment template generates that to recognize this as a shadow line (Z.3 + 2 - P 26) is and serves as an orientation and adjustment aid for the tangent (Z.1 + 3 - P 1) serves, on which the stylus (Z.1 + 3 - P 12) of the pickup (Z.3 - P8) of the given groove guide the Schallpatte (Z.1 + 2 - P 11) to the central axis (Z.1 - P 18) of Turntable (Z.1 - P 13) moves.