DE2005331C3 - Guide device for pickups - Google Patents
Guide device for pickupsInfo
- Publication number
- DE2005331C3 DE2005331C3 DE2005331A DE2005331A DE2005331C3 DE 2005331 C3 DE2005331 C3 DE 2005331C3 DE 2005331 A DE2005331 A DE 2005331A DE 2005331 A DE2005331 A DE 2005331A DE 2005331 C3 DE2005331 C3 DE 2005331C3
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- pickup
- record
- guided
- guide device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C39/00—Relieving load on bearings
- F16C39/06—Relieving load on bearings using magnetic means
- F16C39/063—Permanent magnets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0434—Passive magnetic bearings with permanent magnets on both parts repelling each other for parts moving linearly
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
- G11B3/09—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using manual means only
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
- G11B3/09—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using manual means only
- G11B3/092—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using manual means only using mechanical means
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
- G11B3/12—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse
- G11B3/125—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse by using electric or magnetic means
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
- G11B3/34—Driving or guiding during transducing operation
- G11B3/38—Guiding, e.g. constructions or arrangements providing linear or other special tracking characteristics
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moving Of Heads (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Description
gemäß der Erfindung mit einem herkömmlichen Plattenspielerin seitlicher Ansicht, teilweise im Schnitt, undaccording to the invention with a conventional record player side view, partly in section, and
F i g. 7 eine Aufsicht auf die Gesamtanordnung nach F i g. 6.F i g. 7 shows a plan view of the overall arrangement according to FIG. 6th
Die magnetische Führungsvorrichtung, die als »Magnetbahn« bezeichnet wird, ist mit I bzeichnet und besteht aus dem Permanentmagneten 3, den Polschuhen 4 und 4' und dem Schwebemagneten 2, der ebenfalls ein Permanentmagnet isL Die Magneten 2 und 3 bestehen vorzugsweise aus einem in beliebiger Richtung magnetisierbaren Material, z. B. Barium-Ferrit. Bei der in Fig. 3 angenommenen Polarität der Magnete schwebt der Magnet 2 auf Grund der magnetischen Abstoßung innerhalb des homogenen Magnetfeldes, das sich zwischen den Polschuhen 4 und 4' ausbildet. Die magnetischen Kräfte in der Richtung A-A heben sich auf, wenn der Magnet 2 genügend weit von den Enden der Magnetbahn 1 entfernt bleibt, d. h. solange er sich im langgestreckten, homogenen Feld 1 befindet. Da sich die auf den Schwebemagneten 2 in der Richtung A-A wirkenden Kräfte aufheben, läßt sich der Schwebemagnet 2 in der Richtung A-A leicht verschieben.The magnetic guide device, which is referred to as "magnetic track", is marked with I and consists of the permanent magnet 3, the pole pieces 4 and 4 'and the levitation magnet 2, which is also a permanent magnet. The magnets 2 and 3 preferably consist of one in any Direction of magnetizable material, e.g. B. Barium Ferrite. With the polarity of the magnets assumed in FIG. 3, the magnet 2 floats due to the magnetic repulsion within the homogeneous magnetic field which is formed between the pole pieces 4 and 4 '. The magnetic forces in the direction AA cancel each other out when the magnet 2 remains far enough away from the ends of the magnetic track 1, ie as long as it is in the elongated, homogeneous field 1. Since the forces acting on the levitation magnet 2 in the direction AA cancel each other out, the levitation magnet 2 can be easily displaced in the direction AA.
Somit folgt die magnetische Führungsvorrichtung reibungslos den Bewegungen des Tonabnehmers in der Richtung A-A (Fig. 1) bzw. in der RichtungB (Fig. 5 und 7).Thus, the magnetic guide device smoothly follows the movements of the pickup in the direction AA (Fig. 1) or in the direction B (Figs. 5 and 7).
Die Luftspalte zwischen den Magneten sind relativ groß, so daß eindringender Staub od. dgl. d;e Führungsfunktion nicht nachteilig beeinflussen kann. In F i g. 4 ist ein Hebelarm 7 dargestellt, der in dem Lager 5 um den Drehpunkte schwenkbar aufgehängt ist. Am einen Ende dieses Hebels 7 ist eine Tondose 8 mit der Abtastspitze 9 angebracht, während am entgegengesetzten Ende ein Gegengewicht — vorzugsweise verstellbar — befestigt ist. Dieses Gegengewicht 10 ermöglicht es, das Gewicht der Tondose 8 auf den gewünschten Auflagedruck einzustellen. Das den Hebel 7 aufnehmende Lager 5 ist dabei fest mit dem Schwebemagneten 2 verbunden, so daß der Schwebemagnet 2 die Bewegung des Tonabnehmers 8 parallel zur radialen Richtung mit den von ihm getragenen Teilen voll mitmacht.The air gaps between the magnets are relatively large, so that dust penetrating or the like. D ; e cannot adversely affect management functions. In Fig. 4 shows a lever arm 7 which is suspended in the bearing 5 so as to be pivotable about the pivot point. At one end of this lever 7 a clay box 8 with the scanning tip 9 is attached, while at the opposite end a counterweight - preferably adjustable - is attached. This counterweight 10 makes it possible to adjust the weight of the clay can 8 to the desired contact pressure. The bearing 5 receiving the lever 7 is firmly connected to the levitation magnet 2 so that the levitation magnet 2 fully participates in the movement of the pickup 8 parallel to the radial direction with the parts carried by it.
Auf Grund der Ausbildung des Lagers 5 ist es der Abtastspitze möglich, dem kleinen Höhenschlag, den fast alle Schallplatten aufweisen, leicht zu folgen.Due to the design of the bearing 5, it is possible for the scanning tip, the small runout, the almost all records feature easy to follow.
Durch den Vorschub der Schallplattenrillen wird nun die Abtastspitze 9 in der Richtung B (F i g. 5 und 7) transportiert, wodurch die gesamte Abtastanordnung, nämlich die Teile 5 bis 10, die mit dem Schwebemagneten 2 verbunden sind, diesen berührungsfro in der Magnetbahn 1 entlang führen. Diese Bahn verläuft parallel zur radialen Richtung der Schallplatte Dabei wird zweckmäßigerweise dafür Sorge getragen, daß der Schwebemagnet 2 in keinem Fall die beidop Enden der Magnetbahn · verlassen kann, sich al·· immer innerhalb des homogenen Magnetfeldes bei ή den muß. Mittel hierfür sind dem Durchschnittsfach mann bekannt, beispielsweise in Form von mechar: sehen oder magnetischen Endanschlägon.By advancing the record grooves, the scanning tip 9 is now transported in the direction B (Figs. 5 and 7), whereby the entire scanning arrangement, namely the parts 5 to 10, which are connected to the levitation magnet 2, freeze it in the magnetic track 1 run along. This path runs parallel to the radial direction of the record. In this case, it is expediently ensured that the levitation magnet 2 cannot leave the two ends of the magnetic path, but must always be within the homogeneous magnetic field. Means for this are known to the average person skilled in the art, for example in the form of mechar : see or magnetic end stops.
In den F i g. 6 und 7 trägt die Grundplatte 11 eino^ drehbaren Plattenteller 12, der in einer Lageranonl nung 13, 18 gelagert ist. Ferner nimmt die Grunii platte 11 den Lagerbock 16 auf, in welchem ein Knie hebel 14 mit Hilfe des Handgriffes 17 um 90° um da-Lager 15 in der Pfeil richtung D geschwenkt werde r· kann. Der Kniehebel 14 nimmt die vollständige Füh rungsanordnung auf, die durch Verschwenken au der in Fig. 6 gezeigten Stellung in der Richtung/-zusammen mit der Tonabnehmermechanik von dem Plattenteller abgehoben werden kann, so daß der Schallplattenwechsel nicht behindert wird.In the F i g. 6 and 7, the base plate 11 carries a rotatable turntable 12 which is mounted in a bearing arrangement 13, 18. The Grunii plate 11 also receives the bearing block 16, in which a toggle lever 14 can be pivoted through 90 ° around the bearing 15 in the direction of arrow D with the aid of the handle 17. The toggle lever 14 takes the complete Füh approximately arrangement, which can be lifted from the turntable by pivoting au the position shown in Fig. 6 in the direction / together with the pickup mechanism, so that the record change is not hindered.
F i g. 7 zeigt mit Pfeil B die Bewegungsbahn der Führungsvorrichtung, die parallel zum strichpunk tiert dargestellten Radius R verläuft, wobei die Abtastspitze diesem Radius R folgt.F i g. 7 shows with arrow B the path of movement of the guide device, which runs parallel to the radius R shown by dashed and dotted lines, the scanning tip following this radius R.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (6)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2005331A DE2005331C3 (en) | 1970-02-06 | 1970-02-06 | Guide device for pickups |
DK36571AA DK129881B (en) | 1970-02-06 | 1971-01-28 | Suspension for a pickup arm. |
US00113579A US3771797A (en) | 1970-02-06 | 1971-02-08 | Guide for phono-pick-up |
GB2131971A GB1354318A (en) | 1970-02-06 | 1971-04-19 | Phonograph pick-ups |
DE19712120751 DE2120751A1 (en) | 1970-02-06 | 1971-04-28 | Device for the frictionless and force-free longitudinal movement of a scanner for audio and video discs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2005331A DE2005331C3 (en) | 1970-02-06 | 1970-02-06 | Guide device for pickups |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2005331A1 DE2005331A1 (en) | 1971-08-19 |
DE2005331B2 DE2005331B2 (en) | 1972-06-08 |
DE2005331C3 true DE2005331C3 (en) | 1973-01-04 |
Family
ID=5761557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2005331A Expired DE2005331C3 (en) | 1970-02-06 | 1970-02-06 | Guide device for pickups |
Country Status (4)
Country | Link |
---|---|
US (1) | US3771797A (en) |
DE (1) | DE2005331C3 (en) |
DK (1) | DK129881B (en) |
GB (1) | GB1354318A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3151948A1 (en) * | 1981-12-30 | 1983-07-14 | Valerij Georgievič Karpov | TONE ARM |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4114895A (en) * | 1977-07-26 | 1978-09-19 | Lewis Eckhart | Phonograph tonearm pickup counterbalance |
CH613796A5 (en) * | 1978-06-24 | 1979-10-15 | John A Youngs | Record player |
US4455641A (en) * | 1978-09-12 | 1984-06-19 | Dennesen Electrostatics, Inc. | Linear tracking system |
GB2040480B (en) * | 1978-12-23 | 1984-06-27 | Mutoh Ind Ltd | Rail-type parallel drafting device |
GB2040056B (en) * | 1978-12-23 | 1984-06-27 | Mutoh Ind Ltd | Rail type parallel drafting device |
FR2518790A1 (en) * | 1981-12-21 | 1983-06-24 | Karpov Valery | Tone arm for audio disc systems - has tracking roller to provide radial motion for disc pick=up |
US4553230A (en) * | 1984-08-20 | 1985-11-12 | Paulson Rollie W | Vibration free turntable apparatus |
US5101398A (en) * | 1988-02-19 | 1992-03-31 | Canon Kabushiki Kaisha | Device for magnetically guiding movement of a moving body such as an optical head |
CN101988545A (en) * | 2009-08-06 | 2011-03-23 | 马明 | Magnetic suspension bearing |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2413206A (en) * | 1943-11-18 | 1946-12-24 | Arthur F Worsham | Pickup arm |
US3101952A (en) * | 1962-02-02 | 1963-08-27 | James E Godfrey | Tone-arm for a play-back sound reproducer |
US3356372A (en) * | 1964-12-09 | 1967-12-05 | Rabinow Jacob | Free-tracking phonograph pickup |
US3441331A (en) * | 1967-10-23 | 1969-04-29 | Gen Motors Corp | Gliding shelf |
-
1970
- 1970-02-06 DE DE2005331A patent/DE2005331C3/en not_active Expired
-
1971
- 1971-01-28 DK DK36571AA patent/DK129881B/en unknown
- 1971-02-08 US US00113579A patent/US3771797A/en not_active Expired - Lifetime
- 1971-04-19 GB GB2131971A patent/GB1354318A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3151948A1 (en) * | 1981-12-30 | 1983-07-14 | Valerij Georgievič Karpov | TONE ARM |
Also Published As
Publication number | Publication date |
---|---|
DE2005331A1 (en) | 1971-08-19 |
DK129881B (en) | 1974-11-25 |
GB1354318A (en) | 1974-06-05 |
US3771797A (en) | 1973-11-13 |
DE2005331B2 (en) | 1972-06-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) |