US3810241A - Mode changeover apparatus for a miniature type cassette tape recorder - Google Patents

Mode changeover apparatus for a miniature type cassette tape recorder Download PDF

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Publication number
US3810241A
US3810241A US00104718A US10471871A US3810241A US 3810241 A US3810241 A US 3810241A US 00104718 A US00104718 A US 00104718A US 10471871 A US10471871 A US 10471871A US 3810241 A US3810241 A US 3810241A
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Prior art keywords
driving plate
pin
plate
mode
lever
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Expired - Lifetime
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US00104718A
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English (en)
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S Murata
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Individual
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Individual
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Priority claimed from JP4471970U external-priority patent/JPS51894Y1/ja
Priority claimed from JP4471870U external-priority patent/JPS51893Y1/ja
Priority claimed from JP45039008A external-priority patent/JPS5040523B1/ja
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Publication of US3810241A publication Critical patent/US3810241A/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/675—Guiding containers, e.g. loading, ejecting cassettes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/10—Manually-operated control; Solenoid-operated control
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1883—Driving; Starting; Stopping; Arrangements for control or regulation thereof for record carriers inside containers

Definitions

  • ABSTRACT May 9, 1970 Japan 45-39008 May 9 1970 Japan 45-44718 a mature type cassette tape recorder a mOde Ma 1970 Ja an 4544719 changeover apparatus can perform changeover operay p tion between a recording or reproducing mode, tape U S Cl 360/96 fast forwarding mode, tape rewinding mode, and stop [51] 15/10 mode etc. by operating a single operating button.
  • Fieid 4/4 D H 4 C 14 accordance with operation of the operating button, a 42/261 driving plate on which magnetic heads and a pinch I roller are mounted slides in a longitudinal direction or
  • References Cited 1 swings in a lateral direction.
  • 'mode changeover between a recording mode, reproducing mode, tape fast forwarding mode, tape rewinding mode, stop mode etc. is effected by providing operating buttons each of which corresponds vto each mode.
  • An operator who operates this conventional cassette tape recorder is required to select a'correct operating button for his desired mode. It is frequently happened, however, that theoperator, particularly a person who is unskilled or inexperienced in the use of such tape recorder, operates a wrong button among many operating buttons provided on the apparatus.
  • Another object of the invention is to provide a mode changeover apparatus in which mode changeover can be effected by a mechanism of a very simple and compact construction.
  • a further object of the invention is to provide a mode changeover apparatus which is capable of effecting mode changeover between a recording mode, reproducing mode, tape fast forwarding mode, tape rewinding mode, stop modeetc. by forward and backward, and rightward and leftward operations of a single button.
  • the cassette tape recorder to which the apparatus according to this invention is applied can be operated risk of any erroneous operation.
  • a still further object of the invention is to provide a mode changeover apparatus which has a simple construction and is capable of selectively effecting the tape fast forwarding operation and the tape rewinding operation through a simple mechanism by merely moving a driving plate in the rightwardand leftward directions.
  • a still further object of the invention is to provide a mode changeover apparatus in which a driving plate for effecting mode changeoveroperationcan be returned to its original position after its forward and backward,
  • a switch can be opened and closed by means of a single lever and a single spring.
  • FIG. 1 is a top plan view of one embodiment of the ultraminiature cassette tape recorder in which the apparatus according to this invention is employed, showingthe cassette insertionside; I I
  • FIG. 2 is a bottom plan view showing the speaker side of the tape recorder shown in ,FIG. 1;
  • FIG. 3 is a front elevational view showing the operating button side of tape recorder shown in FIG. 1;
  • FIG. 4 is a top plan view of one embodiment of the driving mechanism according to the invention in its non-operation state
  • FIG. 5 is a bottom plan view of the same mechanism in its stateshown in FIG. 4;
  • FIG. 6 is a top plan view of the mechanism shown in FIG. 11 is a bottom plan view of the mechanism in its state shown in FIG. 10.
  • FIG. 1 a cassette tape recorder 10 is provided on its top side with a top cover 11 which is pivotally supported by shafts 12.
  • the top cover 11 is openable by rotating upwardly and a cassette is placed in a loaded position in a case 13.
  • the 'top cover 11 is provided with a transparent window l4.-Winclings 15a and 15b of magnetic tape respectively wound around'a supply spool and a take-up spool in the cassette can-be observed through the window 14.
  • the bottom side of the case 13 is provided with a grill 16 as shown in FIG. 2.
  • the grill 16 is provided with a number of slits for facilitating passage of sounds of a speaker to the outside.
  • the side of the case shown in FIG. I is defined, for the sake of convenience, as the top side and the side shown in FIG. 2 as the bottom side.
  • the cassette insertion side shown in FIG. 1 is used as a top side in the recording mode and the speaker side shown in FIG. 2 is used as a top side in the reproducing mode. Accordingly, the determination of the top and bottom sides of the case in actual use depends upon the modes in use.
  • the tape recorder can also be used to its erected position.
  • a single operatingbutton 17 is provided protrudingly on a front panel 18 of thecase 13.
  • the operating button 17 is so constructed as to be capable of moving forward and backward, and rightward and leftward directionsas will be described later more in detail.
  • the front panel 18 is further provided with a volume control revolving knob 19, level meter 20, microphone jack 21 etc.
  • FIGS. 4 to 11 One embodiment of the apparatus according to the invention will be illustrated with reference to FIGS. 4 to 11. First, the construction of the embodiment will be illustrated referring to FIGS. 4 and 5 which show the apparatus in its stop mode.
  • a baseplat'e is fixedly mounted in the case 13 of the cassette tape recorder 10.
  • a motor 31 is fixedly at a corner of the base plate 30.
  • Pulley supporting plates 33 and 34 are provided on an edge of an opening 32 formed in the base plate 30.
  • Pulleys 37 and 38 which are provided respectively with a winding shaft 35 and a rewinding shaft 36 are respectively rotatably mounted on the pulley supporting plates 33 and 34.
  • a swinging plate is pivotally mounted at its end on the base plate 30 by means of a shaft 39.
  • Idlers 41 and 42 are rotatably supported on the swinging plate 40.
  • the idlers 41 and 42 are located between the pulleys 37 and 38.
  • An ereasing head 44, a recording and reproducing head 45 and a pinch roller 46 are fixed in a lateral direction on the base portion of a substantially inverted T shaped driving plate 43.
  • the projecting leg portion of the driving plate 43 covering the middle part of the opening 32 is formed at its center with an opening 47.
  • Resilient rod springs 49 and which are parallel with each other are fixed at their one ends to a pin 48 provided on the,
  • a lever 53 is pivotally supported by a shaft 54 on the base plate 30 and has three arm portions 55, 57 and 60.
  • a switch cam 56 is rotatable about a pin 89 due to its gravity. In FIG. 4, the lower fore end of the cam 56 is at a height at which it can push the arm portion 55 of the lever 53. When the tape recorder is turned over as shown in FIG. 5, the cam 56 is rotated by its own gravity into a position in which it cannot push the arm portion 55.
  • a lever 59 is pivotally supported about a shaft 58 fixed to the base plate 30 and has a pawl 59a provided on its upper surface.
  • a recording-reproducing changeover switch 61 is actuated by a rotating motion of the arm portion 60.
  • the applicant has already disclosed a principle of a switch using a gravity-operated changeover means in U.S. Pat. No. 3,485,963 patented Dec. 23, 1969.
  • a slot 62 is formed at a front central part of the base plate 30.
  • the slot 62 is substantially in the form of an inverted T shape having a leg-like slot portion 62a and arm-like slot portions 62band 620.
  • a pin 63 provided at a front central part of the under surface of the driving plate 43 is engaged in the slot 62.
  • a lever 64 is pivotally supported by a shaft 65 on the base plate 30.
  • One arm 64a of the lever 64 is formed at its foremost end into a V-shapedportion 66.
  • a spring 67 Between another arm 64b of the lever 64 and the base plate 30, there is provided a spring 67.'In FIG. 5, the lever 64 receives a rotating force in the counterclockwise direction by the spring 67. Hence, the lever 64 urges the pin 63 at the bottom of the V" shaped engaging portion 66 in the direction of an arrow A whereby the pin 63 and the driving plate 43 are normally held at a stable non-operating neutral position.
  • a movable contact member 87 of a main switch 86 is normally urged against the foremost end of the arm 64b of the lever 64 thereby opening the circuit.
  • An engaging pin 98 provided at the fore end on the under surface of the driving plate 43 is engaged in a guide slot 68 formed in the base plate 30 in the direction of arrows A and B.
  • An engaging plate 69 is of the same shape as the one used in a well known push-on and push-off switch and is mounted on the base plate 30 by a shaft 70.
  • the engaging plate 69 is rotatable about the shaft 70 in the clockwise and counterclockwise directions and also slightly movable in the vertical direction along the shaft 70.
  • the engaging plate 69 receives a rotating force in the clockwise direction in FIG. 5 and is always urged against the pin 98.
  • a flywheel 72 is formed coaxially and integrally with a pulley 74 and is rotatably supported on a supporting plate 75 fixed to the base plate 30.
  • a capstan 73 is coaxially provided on the upper surface of the flywheel 72, projecting through an opening 93 formed in the base plate 30.
  • a lever 76 is pivotally mounted by a shaft 77 on the base plate 30.
  • a pulley 78 and an idler 84 formed integrally therewith are rotatably mounted on the base plate 30.
  • On the upper surface of another endof the lever 76 there is provided a pin 79.
  • the lever 76 receives a rotating force in the counterclockwise direction in FIG. 5 by a spring 81 provided between a point adjacent said other end of the lever and the base plate 30. Hence, the pin 79 is always urged against a side projection 80 formed at the fore end of the driving plate 43.
  • a belt 83 is passed around a shaft 82 of the motor 31 and the pulley 74.
  • the pulley 78 is pressing the belt 83 from the outside.
  • the idler 84 is spaced apart from the pulley 37 of the taking-up side.
  • a belt 85 is passed around the idlers 41 and 42 and a pulley (not shown) formed integrally withthe flywheel 72 on the upper surface thereof.
  • the belt 85 is passed substantially in the shape of S" around the idlers 41 and 42, so that the idlers 41 an 42 rotate in the opposite direction to each other as the belt 85 runs.
  • a projection 88 is provided at the front central portion of the driving plate 43 and the operating button 17 is fixed to this projection 88.
  • a plate part 90 shown by a chain line is a plate carrying component parts of the electric circuit and is rigidly mounted on the base plate 30 by screws 91 and 92.
  • a speaker of a relatively large diameter (not shown) is disposed in a space formed about the center 0 which is substantially at the center of the base plate 30.
  • each component part is in the state shown in FIGS. 4 and 5.
  • the cover 11 shown in FIG. 1 is opened and a cassette 100 is placed in a loaded position indicated by a chain line as shown in FIG. 6.
  • the operating button 17 is pushed in the direction of an arrow B.
  • This mechanism may be replaced by a known mechanism in which another button for the recording mode is provided besides the operating button I 17. and the apparatus is changed over therecording mode only when both buttons are pushed.
  • the engaging pin 98 advances and causes the engaging plate 69 to rotate in the counterclockwise direction against a resilient force of the spring 71.
  • the pin 98 engages a slot 94 formed at the fore end of the engaging plate 69 thereby stoppingits move ment.
  • the engaging plate 69 moves in a rotating motion in the clockwise direction by force of the spring 71 and the pin 98 comes into abutting contact with an intermediate step 95 of the slot- 94. Accordingly, the driving plate 43 is held in the displaced position even after the operating button 17 is released-from pushing.
  • the pin 63 With the sliding movement of the driving plate 43, the pin 63 moves in the direction of the arrow B.
  • the pin 63 while being engaged at the bottom of the engaging portion 66, causes the lever 64 to rotate in the clockwise direction against a force of the spring 67.
  • the movable contact member 87 of the main switch 86 is pushed by the foremost end of the arm 64b to close the main switch 86.
  • the electric current flows in the electric.
  • the magnetic heads 44 and 45 and the pinch roller 46 With the sliding movement of the driving plate 43 in the direction of the arrow B, the magnetic heads 44 and 45 and the pinch roller 46 also move in the direction of the arrow B, enter into the cassette 100 from its front opening and come into contact with the tape in the cassette 100. At this time thepinch roller 46 is urged against the capstan 73 through the tape. The capstan 73 is being rotated by the rotational force of the motor 31 transmitted through the belt 83 and the pulley 74. Accordingly, the tape is run at a constant speed by the capstan 73 and the pinch roller 46. Thus erasing is effected by the erasing magnetichead 44 and recording is effected by the recording and reproducing magnetic head 45 respectively on the tape.
  • the button 17 is further pushed in the direction of the arrow B.
  • the engagingpin 98 advances further in the direction of the arrow B and comes out-of engagement with the intermediate step 95.
  • the engaging plate 69 is slightly rotated in the clockwise direction by a force of the spring 71 and the engaging pin 98 engages with an inner step 97.
  • a projection 96 provided between the intermediate step and the inner step 97 is curved upwardly at its foremost end in FIG. 7-.
  • the driving plate 43 and the engaging pin 98 are always subject to a sliding force applied. by
  • FIGS. 8 and 9 An operation in the tape rewinding mode will now be illustrated with reference to FIGS. 8 and 9.
  • the button 17 is pushed sidewards in the direction of an arrow C as shown in FIG. 8.
  • the driving plate 43 moves in a rotational motion about the pin 98 engaged in the slot 68 in the clockwise direction in FIG. 8.
  • the pin 63 is guided along the arm-like slot portion 62b of the slot 62 as shown in FIG. 9.
  • the rotational force of the motor 3] is transmitted to the idler 42 through the belt 83, the pulley 74 and the belt.85 to cause the idler 42 to rotate in the counterclockwise direction as shown in FIG. 8 (in the clockwise direction in FIG. 9).
  • the diameter of the idler 42 is so selected that it is larger than the diameter of the idler 84. Accordingly, the pulley 3 8 and the shaft 36 rotate at a relatively high speed, rewinding the tape contained in the cassette 100 at a relatively high speed.
  • the button 17 is released.
  • the lever 64 is rotated in the counterclockwise direction as shown in FIG. 9 by the force of the spring 67.
  • the rotating lever 64 pushes the pin 63 by the slope of the engaging portion 66 in the direction of an arrow D.
  • This causes the pin'63 and the driving plate 43 to move in a rotational motion in the direction of the arrow D to return to their neutral position shown in FIG. 1.
  • the main switch 86 is again opened because of the counterclockwise rotational movement of the lever 64 and the tape rewinding mode is completed.
  • the rotational force of the motor 31 is transmitted to the idler 41 through the belt 83, the pulley 74 and the idler to cause the idler 41 to rotate in the clockwise direction as shown in FIG. 10 (in the counterclockwise direction as shown in'FIG. 11).
  • the diameter of the idler 4 1 is to selected that it is larger than the diameter of the idler 84. Accordingly, the pulley 37 and the shaft 35 rotate at relatively high speed, winding the tape contained in the cassette at a relatively high speed.
  • the button 17 is released.
  • the lever 64 is rotated by the force of the spring 67 in the clockwise direction in FIG. 11.
  • the rotating lever 64 pushes the pin 63 by the slope of the engaging portion 66 in the direction of the arrow C.
  • This causes the pin 63 and the driving plate 43 to move in a pivotal motion in the direction of the arrow C to return to their neutral positions shown in FIG. I.
  • the main switch 86 is opened again because of the counterclockwise rotational movement of the lever 64 and the tape fast forwarding mode is completed.
  • the apparatus according to this invention having the above described construction is capable of performing each operation in the aforementioned modes simply by operating the single button 17 and the driving plate 43 attached thereto longitudinally (forwardly and backwardly) and laterally (leftwardly and rightwardly).
  • this apparatus has fewer component parts and therefore the manufacturing cost is lower than the conventional apparatus.
  • the apparatus can provide a relatively large space in the case 13 due to its simplified construction. This is advantageous in that the cassette tape recorder can accommodate a larger speaker, amplifier etc. than an ordinary cassette tape recorder in spite of its ultraminiature size thereby obtaining an excellent reproduced sound in spite of its size.
  • a mode change-over apparatus for a miniature cassette tape recorder comprising: a base plate for sup porting a driving motor and two spaced-apart pulleys for rotating a. tape take-up spool and a tape supply spool in a cassette loaded thereon; a driving plate including a first portion for supporting an erasing magnetichead, a recording and reproducing magnetic head and a pinch roller substantially in one line, and a second portion extended from the middle portion of one side of said first portion, perpendicularly to said line and in a plane including said first portion, said driving plate being supported on said base plate so that said driving plate is slidably and swingably movable; an opcrating button provided at the middle portion of the other side of said first portion of the driving plate; first means for guiding said driving'plate in asliding movement in parallel with said baseplate and in et direction perpendicular to said line; second means for guiding said driving plate in a swinging movement in parallel with said base plate and about an
  • said first and said second guide means include a first guiding slot formed at said base plate in said direction along the extension of said second portion of the driving plate, a first pin provided at the foremost end of said second portion and engaged in said first slot, a second guiding slot including a linear portion formed-at said base plate along said extension of the second portion and an arcuate slotportion formed at said base plate along the direction of swinging of said driving plate, said linear and said arcuate slot portions being connected with each other, and a second pin provided on said driving plate and engaged in said second slot, said driving plate being guided in said sliding movement by said first pin guided along said first slot, and said second pin guided along said linear portion of the second slot, and said driving plate being further guided in said swinging movement by said first pin which acts as said axis of the swinging movement while being engaged in said first slot, and

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US00104718A 1970-05-09 1971-01-07 Mode changeover apparatus for a miniature type cassette tape recorder Expired - Lifetime US3810241A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4471970U JPS51894Y1 (de) 1970-05-09 1970-05-09
JP4471870U JPS51893Y1 (de) 1970-05-09 1970-05-09
JP45039008A JPS5040523B1 (de) 1970-05-09 1970-05-09

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US3810241A true US3810241A (en) 1974-05-07

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US00104718A Expired - Lifetime US3810241A (en) 1970-05-09 1971-01-07 Mode changeover apparatus for a miniature type cassette tape recorder

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US (1) US3810241A (de)
CA (1) CA944477A (de)
DE (1) DE2122795C3 (de)
FR (1) FR2091334A5 (de)
GB (1) GB1297321A (de)
IT (1) IT960012B (de)
NL (1) NL7106282A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513210A (ja) * 1974-06-27 1976-01-12 Matsushita Electric Ind Co Ltd Jikikirokusaiseisochi
US4010493A (en) * 1974-04-05 1977-03-01 Autovox S.P.A. Tape transport device
FR2360148A1 (fr) * 1976-07-09 1978-02-24 Sony Corp Appareil de lecture et d'enregistrement de cartes magnetiques
US4179714A (en) * 1975-09-30 1979-12-18 Olympus Optical Company, Ltd. Method of recording an index signal in dictating tape recorder
US4280154A (en) * 1978-01-24 1981-07-21 Masatoshi Ando Slot loading cassette tape mechanism
US4318138A (en) * 1978-11-16 1982-03-02 Olympus Optical Co., Ltd. Automatic reverse cassette tape recorder with a rotatable head-supporting board

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1004253B (it) * 1974-04-05 1976-07-10 Autovox Spa Giranastri per nastro in cartuccia
GB1542882A (en) * 1975-03-20 1979-03-28 Matsushita Electric Ind Co Ltd Tape cassette machines

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971762A (en) * 1956-06-05 1961-02-14 Zorn Werner Controlling magnetic sound recording and reproducing devices
FR1542195A (fr) * 1966-11-03 1968-10-11 Philips Nv Appareil d'enregistrement et de reproduction
US3417936A (en) * 1965-11-30 1968-12-24 Bosch Elektronik Photokino Drive arrangement for a tape recorder
US3514050A (en) * 1968-02-26 1970-05-26 Matsushita Electric Ind Co Ltd Fast forwarding and rewinding mechanism in tape recorder of magazine type
US3532293A (en) * 1968-05-21 1970-10-06 Rca Corp Magnetic tape cassette player apparatus
US3542312A (en) * 1968-06-21 1970-11-24 Minnesota Mining & Mfg Web transport drive structure
US3550983A (en) * 1965-11-24 1970-12-29 Grundig Emv Sound recording and reproducing apparatus
US3582569A (en) * 1966-08-31 1971-06-01 Marcel Jules Helene Staar Selecting apparatus for the reproduction of multitrack magnetic tapes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971762A (en) * 1956-06-05 1961-02-14 Zorn Werner Controlling magnetic sound recording and reproducing devices
US3550983A (en) * 1965-11-24 1970-12-29 Grundig Emv Sound recording and reproducing apparatus
US3417936A (en) * 1965-11-30 1968-12-24 Bosch Elektronik Photokino Drive arrangement for a tape recorder
US3582569A (en) * 1966-08-31 1971-06-01 Marcel Jules Helene Staar Selecting apparatus for the reproduction of multitrack magnetic tapes
FR1542195A (fr) * 1966-11-03 1968-10-11 Philips Nv Appareil d'enregistrement et de reproduction
US3514050A (en) * 1968-02-26 1970-05-26 Matsushita Electric Ind Co Ltd Fast forwarding and rewinding mechanism in tape recorder of magazine type
US3532293A (en) * 1968-05-21 1970-10-06 Rca Corp Magnetic tape cassette player apparatus
US3542312A (en) * 1968-06-21 1970-11-24 Minnesota Mining & Mfg Web transport drive structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010493A (en) * 1974-04-05 1977-03-01 Autovox S.P.A. Tape transport device
JPS513210A (ja) * 1974-06-27 1976-01-12 Matsushita Electric Ind Co Ltd Jikikirokusaiseisochi
JPS5524177B2 (de) * 1974-06-27 1980-06-27
US4179714A (en) * 1975-09-30 1979-12-18 Olympus Optical Company, Ltd. Method of recording an index signal in dictating tape recorder
FR2360148A1 (fr) * 1976-07-09 1978-02-24 Sony Corp Appareil de lecture et d'enregistrement de cartes magnetiques
US4126885A (en) * 1976-07-09 1978-11-21 Sony Corporation Card recording and/or reproducing apparatus
US4280154A (en) * 1978-01-24 1981-07-21 Masatoshi Ando Slot loading cassette tape mechanism
US4318138A (en) * 1978-11-16 1982-03-02 Olympus Optical Co., Ltd. Automatic reverse cassette tape recorder with a rotatable head-supporting board

Also Published As

Publication number Publication date
NL7106282A (de) 1971-11-11
DE2122795B2 (de) 1973-06-20
GB1297321A (de) 1972-11-22
DE2122795C3 (de) 1974-01-31
CA944477A (en) 1974-03-26
DE2122795A1 (de) 1971-11-18
IT960012B (it) 1973-11-20
FR2091334A5 (de) 1972-01-14

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