JPH01143053A - Tape driving device - Google Patents

Abstract

PURPOSE:To reduce cost with a unidirectional motor low in price by providing an oscillating gear, which is selectively engaged to a gear to be interlocked to a coiling shaft and a gear to be interlocked to a coiling-back shaft, and an energizing member to energize a turning member in the opposite direction of the turning direction of the motor. CONSTITUTION:To a turning member 56 which is turned in correspondence to the revolution of a motor 50, a first oscillating gear 58 and a second oscillating gear 60 are provided to receive the transmission of revolving force from the motor 50 and to be oscillated by the revolution of the turning member 56. Now, when an energizing member 28 to be an operating lever is moved in an arrow B direction, the turning member 56 is energized in the opposite direction of the revolving direction of the motor 50 through a butting pin 62 and the second oscillating gear 60 and a coiling reel gear 24 are engaged. When the operating lever is moved in an arrow D direction, the abutting pin 64 is engaged to a recessing part 78 of the energizing member 28 and the turning member 56 is oscillated in an arrow C direction which is the revolving direction of the motor 50. Then, the first oscillating gear 58 drives a coiling-back reel gear 26 through a gear 66. Thus, unidirectional motor of the low price, which does not need a control circuit, is used and the cost can be reduced.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention is used in an apparatus equipped with a winding shaft and an unwinding shaft between which a tape is passed. The present invention relates to a tape drive device that selectively runs a tape in one direction or the other between these shafts by selectively transmitting rotational force from a motor to the shafts.

(Prior Art) The above-mentioned type of tape drive device was developed in U.S. Pat.
It is known from the publication No. 1259.

In this conventional tape drive tl+ device, gears are concentrically connected to the bases of each of the take-up reel stand and the supply reel stand, between which the tape is passed. The pulleys are arranged so that the rotation center axis of the gear and its own rotation center cooperate to form three vertices of a triangle.

A power transmission belt is passed between the output pulley fixed to the output shaft of the motor, and
The drive gears are fixed concentrically.

One end of a rotating lever is rotatably connected to the rotation center axis of the pulley, and the other end of the rotating lever extends between a pair of gears connected to a take-up reel stand and a supply reel stand. ing. A rotary gear that meshes with the drive gear is rotatably connected to the other end of this rotary lever, and as a result of the rotation of the drive gear, the rotary gear rotates around the drive gear while being meshed with the drive gear. It revolves in the direction of rotation.

In this conventional example, the output shaft of the motor is selectively rotated in one direction and the other direction. For example, if the output shaft of the motor is rotated in one direction, the pulley will also rotate in one direction, and the rotary gear will be driven by the drive gear concentric with the boob. It revolves on the IJ gear in the same direction as the rotation of the boob, and this rotating gear meshes with a gear connected to, for example, a take-up reel stand located in the direction of revolution, and the output shaft of the motor The rotational force is transmitted to the gear on the take-up reel stand. As a result, the tape is pulled out from the supply reel stand to which the rotational force from the motor's output shaft is not transmitted by the rotation of the take-up reel stand to which the rotational force from the motor's output shaft is transmitted, and heads toward the take-up reel stand. It travels and is finally wound onto a take-up reel stand.

Contrary to what was described above, if the output shaft of the motor is rotated in the other direction, the drive I which is concentric with the bobbin rotating in the same direction as the output shaft of the motor! The rotating gear is driven by the ll gear.
It revolves on the J gear in the same direction as the rotation of the boob, and this rotation v
JI! The iI wheel is positioned in the direction of revolution and meshes with the gear connected to the supply reel stand, transmitting the rotational force from the output shaft of the motor to the gear of the supply reel stand. Due to the rotation of the supply reel stand to which the rotational force from the motor's output shaft was transmitted, it is pulled out from the take-up reel stand to which the rotational force from the motor's output shaft was not transmitted, travels toward the supply reel stand, and finally is wound onto the supply reel table.

(Problems to be Solved by the Invention) In the conventional tape drive device configured as described above, the motor that can rotate in one direction and the other direction is expensive, and the motor can be rotated in one direction or the other direction. A control circuit is required to selectively rotate the motor. Such a control circuit complicates the structure of an apparatus using a tape drive, increases the manufacturing cost of the latter apparatus, and is an obstacle to miniaturization of the latter apparatus.

(Means for solving the problem) This invention was made under the above circumstances, and the purpose of this invention is to:
The M4 structure of the device using the tape drive device is made into a multi-shape device, which increases the manufacturing cost of the latter device and can rotate in only one direction without requiring a control circuit, which is an impediment to miniaturization of the latter device. It is possible to use an inexpensive motor, and even with this inexpensive motor that can rotate only in one direction, the winding shaft corresponding to the winding reel stand of the conventional example described above and the lζ The tape can be selectively run in one direction or the other between the rewind shaft, which corresponds to the conventional supply reel stand, and there is no need for a control circuit. It is an object of the present invention to provide a tape drive device that simplifies 4M construction, lowers the manufacturing cost of the latter device, and promotes miniaturization of the latter device.

The object of the present invention is to provide a rotating member that rotates in accordance with the rotation of a motor, a rotating member that is provided on the rotating member to receive rotational force from the motor, and a rotating member that rotates due to the rotation of the rotating member. A rocking gear that selectively meshes with a gear that interlocks with a take-up shaft and a gear that moves on an unwinding shaft, and an urging member that urges the rotating member in a direction opposite to the direction of rotation by the motor. This can be achieved by a tape drive device having the following characteristics.

(Function) In a tape drive device characterized by the above-described configuration capable of achieving the above-described object of the present invention, when the output shaft of the motor rotates in one direction, the rotating member also rotates in the one direction. It attempts to rotate, but the rotating member is biased by the biasing means in the opposite direction to the rotational direction of the motor's output shaft, so it is located in the opposite direction to the rotational direction of the motor's output shaft. By meshing the oscillating VJ gear with either the gear interlocking with the winding shaft or the gear interlocking with the rewinding shaft, the rotational force from the output shaft of the motor is transmitted to one of the gears. The tape is run from the other shaft to either a take-up shaft or a rewind shaft which are interlocked with the gear, and the tape pulled out from the other shaft is wound onto either of the shafts. While the output shaft of the motor is rotating in one direction, if the above-mentioned biasing of the rotating member by the biasing means is stopped, the rotating member will respond to the rotation of the output shaft of the motor in one direction. By meshing the oscillating gear with the other gear that rotates in one direction and interlocks with the take-up shaft located in the rotational direction of the motor's output shaft or the gear that moves with the unwind shaft, the motor The rotational force from the output shaft of is transmitted to the other remaining gear, and the tape is run from one shaft to the remaining other of the winding shaft or rewinding shaft that is interlocked with this gear, and The tape pulled out from the above one shaft is wrapped around the remaining other shaft.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

(Embodiment) FIG. 1 shows a chassis 10 of a tape recorder using a tape drive device according to an embodiment of the present invention from the front side, in which various constituent members of the tape drive device are shown. The chassis 10 is shown by a two-dot chain line because it is disposed on the back side of the chassis 10.The above tape recorder is a handy type tape recorder that uses a tape cassette called a micro cassette. The cassette is placed on the surface side of the chassis 10, and is placed at a predetermined position on the surface of the chassis 10 by a positioning bin (not shown) planted on the surface side.
A take-up reel shaft and a rewind reel shaft inserted into a pair of reel hubs of a micro cassette (not shown) are arranged at predetermined positions on the surface of the cassette. Each axis of rotation 12.
The base of the opening 16.14 is formed in the chassis 10.
18 and is fixed to tongue pieces 20 and 22 which are bent from the periphery of the opening 16 to the back side.

A rotation center shaft 12 located on the back side of the chassis 10.
A take-up reel gear 24 and a rewind reel gear 26, which are concentrically connected to the take-up reel shaft and the unwind reel shaft via a known slip mechanism, are rotatably attached to the base of the reel 14. .

A sliding operating lever 28 is further disposed on the back side of the chassis 10 and extends along the lower edge of the chassis 10. The sliding operating lever 28 is an operating button that protrudes outward from the lower edge of the chassis 10. Contains 29. The sliding operating lever 28 is guided to move along the lower edge of the chassis 10 by a plurality of guide pins 30 that are embedded in the back surface of the chassis 10 or are bent to protrude toward the back surface. Sliding operation lever 28
Three positioning recesses 32, 34, 36 are successively formed on the lower edge of the holder.
．． A roller 40, which is rotatably attached to the other end of a leaf spring 38 whose one end is fixed to the side wall of the chassis 10, is engaged with one of the springs 36. Three positioning recesses 32, 34° 36 on the lower edge of the sliding operating lever 28 and a leaf spring 38 fixed to the side wall of the chassis 10.
The three positioning recesses 32, 3 are rotatably supported by
4. Roller 40 and fist engaging any one of 36,
It constitutes a so-called click-stop mechanism that selectively holds the sliding operating lever 28 at three predetermined positions.

Approximately halfway between the take-up reel gear 24 and the unwind reel gear 26 and near the upper edge of the sliding operating lever 28, there is a
A capstan 44 rotatably held by a bearing 42 on the chassis 10 is disposed, and a flywheel 46 is concentrically fixed to the base of the capstan 44 located on the back side of the chassis 10. , chassis 10
A drive gear 48 is fixed concentrically to the upper surface of the flywheel 46, which faces the surface of the flywheel 46.

A power transmission belt 54 is passed around the circumferential surface of the flywheel 46 between it and a pulley 52 on the output shaft of a motor 50 which is fixed to the chassis 10 on the side thereof. The motor 50 rotates only in one direction shown by arrow A at a predetermined speed.

The outer peripheral surface of the bearing 42 on the chassis 10 is provided so that one end of a rotary lever 56 can freely rotate along the back surface of the chassis 10 between the 11th surface of the chassis 10 and the drive gear 48 of the flywheel 46. It is attached and the rotating lever 5
A large-diameter first swing gear 58 that meshes with the drive gear 48 is rotatably attached to the other end of the drive gear 6 . The first oscillating gear 58 has a smaller diameter second oscillating gear 60 integrally formed concentrically on its outer surface opposite the pivoting lever 56 . The moving gear 60 meshes with the take-up reel gear 24.

The rotary lever 56 is equipped with an abutment pin 62 at one end on the slide type operating lever 28 side, and when the abutment pin 62 comes into contact with the upper edge of the slide type operation lever 28, the rotary lever 56 is moved to the motor 50. This prevents rotation in the same direction as the rotation direction of the output shaft (clockwise in FIG. 1).

Further, on the back surface of the chassis 10, a rotary shaft 64 is attached to the other end of the rotary lever 56 on the side of the rewind reel gear 26 so as to be rotatable with respect to a rotation center shaft 64 planted on the back surface of the chassis 10. A rewind idler gear 66 is disposed. The rewind idler gear 66 is the rewind reel gear 26
and is located in the same plane as the large-diameter first swing gear 58 rotatably supported by the other end of the swing lever 56.

The take-up reel gear 24 has a small-diameter fast-forwarding gear 68 integrally and concentrically formed on its back surface. A large-diameter first rapid-feeding idler gear 66 that is rotatably attached to a rotation center shaft 70 implanted on the back surface of the chassis 10 meshes with the rapid-feeding gear 68 .
A second rapid traverse idler gear 76 having a small diameter and which is rotatably attached to a rotation center shaft 74 implanted on the back surface of the chassis 10 is meshed with the rapid traverse idler gear 66 . The second rapid feed idler gear 76 is also located in the same plane as the large-diameter first swing gear 58 rotatably supported on the other end of the pivot lever 56 . When rotates counterclockwise around the capstan 44, the first large-diameter swing! lJI! IiI car 58
It is located within the extension of the movement trajectory drawn by .

A notch 78 is formed on the upper edge of the sliding operation lever 28 and extends further to the right from a position a predetermined distance apart to the right of the abutting pin 62 at one end of the rotary lever 56 .

In the tape recorder configured as described above, when the sliding operating lever 28 is pressed in the right direction as indicated by the arrow B shown in FIG. It moves to the right until it engages in the left-hand positioning recess 32 of the two positioning recesses 32° 34.36.

At this time, a so-called record mode is set on the tape recorder. When the record mode is set, the motor 50 rotates the output shaft in the clockwise direction indicated by arrow A at a predetermined speed. The rotational force from the output shaft of the motor 50 is transmitted to the flywheel 46 by the power transmission belt 54, and the flywheel 46 rotates together with the drive gear 48 in the clockwise direction indicated by arrow C at a predetermined speed.

The above-described rotation of the flywheel 46 and drive gear 48 tends to rotate the pivot lever 56 in the clockwise direction indicated by arrow C; however, the rotation of the pivot lever 56 in the clockwise direction indicated by arrow C is The abutting pin 62 of the movable lever 56 abuts against the upper edge of the sliding operating lever 28, so that it is placed on top of the upper edge of the sliding operating lever 28. That is, the upper edge of the sliding operation lever 28 applies an urging force to the rotary lever 56 in the opposite direction to the rotational force that attempts to rotate the rotary lever 56 in the clockwise direction shown by arrow C. 56 is prevented from rotating in the clockwise direction indicated by arrow C.

As a result, as shown in FIG. 1, the engagement of the small-diameter second oscillating VJ gear 60 at the other end of the rotating lever 56 with the take-up reel gear 24 is maintained, so that the drive gear 48 of the flywheel 46 The rotational force is transmitted to the take-up reel gear 24 via the large-diameter first swing gear 58 and the small-diameter second swing gear 60, and the take-up reel shaft (not shown) is rotated clockwise. Rotates at a predetermined speed.

In the record mode, a magnetic head and an erase head (not shown) placed on the top surface of the chassis 10 are connected to a magnetic recording tape in a tape cassette (not shown) placed at a predetermined position on the top surface of the chassis 10; A pinch roller is attached to a take-up reel shaft and a rewind reel shaft (not shown).
A pinch roller (not shown), which abuts between the pair of reel hubs, cooperates with a capstan 44 to pinch the magnetic recording tape. Here, the magnetic recording tape is connected to the rewind reel gear 2 to which the rotational force from the output shaft of the motor 50 is not transmitted.
A magnetic head and an erase head (not shown) are pulled out at a predetermined speed by a capstan 44 and a pinch roller from a reel hub on a rewind reel shaft (not shown) connected to the rewind reel shaft (not shown) and the capstan 44.
and a pinch roller to perform magnetic recording on the magnetic recording tape. The magnetic recording tape that has passed through the capstan 44 and the pinch roller is wound onto a reel hub on a take-up reel shaft (not shown) connected to the take-up reel gear 24 to which rotational force from the output shaft of the motor 50 is transmitted. taken.

In the tape recorder constructed as described above, when the sliding operating lever 28 is pushed in the left direction as indicated by the arrow shown in FIG.
is moved to the left until it engages in the positioning recess 36 located on the right of the three positioning recesses 32, 34, 36.

At this time, a so-called play mode is set in the tape recorder. At this time, as shown by the two-dot chain line in Figure 1,
The notch 78 on the upper edge of the sliding operating lever 28 does not reach the position of the abutting pin 62 of the rotating lever 56.

Therefore, even if the rotating lever 56 attempts to rotate in the clockwise direction indicated by arrow C due to the rotational force transmitted from the output shaft of the motor 50, this rotation will be prevented by the contact with the upper edge of the sliding operating lever 28. This is blocked by pin 62 and is the same as in the record mode described above.

The play mode is different from the above-mentioned record mode because the erase head (not shown) does not come into contact with the magnetic tape, and the magnetic head that comes into contact with the magnetic tape reads information magnetically recorded on the magnetic tape for reproduction. be.

FIG. 2 shows a state in which the sliding operating lever 28 is moved further to the left than the play mode setting position described above. Here, the roller 40 of the click-stop mechanism is located in three positioning recesses 32, 34, 3.
It rests on an inclined surface on the lower edge of the sliding operating lever 28 further to the right than the positioning recess 36 located on the right side of the lever 6.

At this time, a so-called review mode is set in the tape recorder. Also in review mode, motor 5
The output shaft of 0 rotates at a predetermined speed in the clockwise direction indicated by arrow A in FIG. In the review mode, the notch 78 on the upper edge of the sliding operating lever 28 has moved to just below the abutting pin 62 of the rotating lever 56, so that the drive gear receives the rotational force from the output shaft of the motor 50. The rotary lever 56, which attempts to rotate in the same direction as the rotational direction of the drive gear 48 by rotating the clockwise direction indicated by the arrow C at a predetermined speed, has an abutment pin 62 as shown in FIG. Notch 78 on the upper edge of the sliding operation lever 28
By entering therein, it rotates clockwise around the capstan 44 in the same direction as the rotational direction of the drive gear 48 . This moves the small-diameter second oscillating gear 60 away from the take-up reel gear 24 and causes the large-diameter first oscillating gear 58 to mesh with the rewind idler gear 66 instead. Therefore motor 50
The rotational force from the output shaft of is transmitted from the drive gear 48 to the large-diameter first
is transmitted to the rewind reel gear 26 through the oscillating gear 58 and the rewind idler gear 66, so that the rewind reel gear 26 rotates at a predetermined speed in a counterclockwise direction. Here, the large-diameter first swing gear 58 meshing with the rewind reel gear 26 is rotating in the counterclockwise direction indicated by arrow E, and this rotation is caused by the first swing gear 58
11J gear 58 is pressed against rewind idler 1ilii66.

In the review mode, an erase head (not shown) and a pinch roller placed on the top surface of the chassis 10 are separated from a magnetic recording tape in a tape cassette (not shown) placed at a predetermined position on the top surface of the chassis 10. , only the magnetic head (not shown) is in contact with the magnetic recording tape.

Therefore, the magnetic recording tape is pulled out from the reel hub on the take-up reel shaft (not shown) connected to the pick-up sole gear 24 to which the rotational force from the output shaft of the motor 50 is not transmitted, and from the output shaft of the motor 50. The information magnetically recorded on the magnetic tape is wound onto a reel hub on a rewind reel shaft (not shown) connected to the rewind reel gear 26 to which the rotational force of the magnetic tape is transmitted. Read out.

Move the sliding operation lever 28 to the right from the rewind mode setting position shown in FIG. 2 to the aforementioned play mode setting position, the stop mode setting position shown in FIG. 1, or the aforementioned record mode setting position. When the slide operation lever 28 is turned, the left edge of the notch 78 on the upper edge of the slide operation lever 28 presses the abutment pin 62 of the rotation lever 56 and the rotation lever 56
is rotated counterclockwise around the capstan 44 from the position shown in FIG. When the sliding operating lever 28 is placed in the play mode setting position described above, the stop mode setting position shown in FIG. The contact pin 62 is returned to the position where it is in contact with the upper edge of the sliding operation lever 28, and the large-diameter first swing gear 58 is rewinded and separated from the idler gear 66 as shown in FIG. Instead, the first rocking gear 60 having a small diameter is meshed with the take-up reel gear 24.

In the tape recorder described above, a seven-door strike forward lever (not shown) is connected to the rotary lever 56. The fast forward lever (not shown) can be operated only when the sliding operating lever 28 is placed in the stop mode setting position (not shown in FIG. 1), and when it is not operated, the rotating lever 56 is moved from the position shown in FIG. 1. Furthermore, the small-diameter second rocking gear 60 is prevented from disengaging from the take-up reel gear 24 by rotating counterclockwise. When the fast forward lever (not shown) is operated, the rotating lever 56 is forced to further rotate counterclockwise from the position shown in FIG. 1 by the fast forward lever (not shown), and as a result, the small diameter second
The oscillating gear 6'0 is separated from the take-up reel gear 24,
Instead, the large-diameter first oscillating wheel 58 meshes with the second fast-forward idler gear 76 . Even when a fast forward lever (not shown) is operated, the output shaft of the motor 50 rotates in the clockwise direction indicated by arrow A in FIG. 48, the first swing gear 58, the second fast-forward idler gear 76, the first fast-forward idler gear 72, and the fast-forward gear 68 to the take-up reel tooth 1i24.

In the fast forward mode, a magnetic recording tape in a tape cassette (not shown) placed at a predetermined position on the top surface of the chassis 10 is transferred to a magnetic head and an erasing head (not shown) placed on the top surface of the chassis 10; and pinch rollers are all spaced apart. Therefore, the magnetic recording tape is pulled out from the reel hub on the rewind reel shaft (not shown) connected to the rewind reel gear 26 to which the rotational force from the output shaft of the motor 50 is not transmitted. It is wound onto a reel hub on a take-up reel shaft (not shown) connected to a take-up reel gear 24 to which rotational force is transmitted.

When the operation of the fast forward lever (not shown) is released, the rotating lever 56 is forcibly returned to the position shown in FIG. 1 by the fast forward lever (not shown). Note that the fast forward lever (not shown) does not interfere with the rotation of the rotary lever 56 between the position shown in FIG. 1 and the position shown in FIG. 2 at all.

The embodiments described above are for illustrating this invention,
It goes without saying that this invention is not limited in any way, and that all modifications, modifications, etc. made within the scope of this invention are also included in this invention.

For example, in order to ensure that the rotating lever 56 rotates clockwise quickly, a biasing spring that biases the rotating lever 56 in the clockwise direction can be connected to the rotating lever 56.

(Function) As detailed above, the tape drive according to the present invention! The lJ device includes a rotating member that rotates according to the rotation of the motor, and a rotating member that is provided on the rotating member to receive the rotational force from the motor, and is linked to the winding shaft by the rotation of the rotating member. fl to do
The present invention is characterized by comprising a wilJm wheel that selectively meshes with a gear that interlocks with the llN and rewinding shafts, and a biasing member that biases the rotary member in a direction opposite to the direction of rotation by the motor. Because it can rotate in only one direction, it does not require a control circuit, which not only complicates the structure of the device using the tape drive and increases the manufacturing cost of the latter device, but also hinders the miniaturization of the latter device. It is possible to use an inexpensive motor that can rotate in only one direction, and even with this inexpensive motor that can rotate in only one direction, it is possible to use a take-up shaft corresponding to the take-up reel stand of the above-mentioned conventional example and the above-mentioned one. A device that uses a tape drive device because it can selectively run the tape in one direction or the other between the rewind shaft and the rewind shaft, which corresponds to the conventional supply reel stand, and does not require a control circuit. It is possible to simplify the structure of the latter device, lower the manufacturing cost of the latter device, and promote miniaturization of the latter HIM.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of the main parts of the tape recorder when the stop mode is set in the tape recorder using the tape drive vJ device according to the embodiment of the present invention, viewed from the front side of the chassis. FIG. 2 is a plan view, simpler than FIG. 1, of the main parts of the tape recorder shown in FIG. 1, viewed from the front side of the chassis, when the review mode is set in the tape recorder. 24... Take-up reel gear, 26... Rewind reel gear, 28... Slide type operation lever (biasing member),
50...Motor, 56...Rotating lever (rotating member)
, 58...first swing gear, 60...second swing gear. Applicant's representative Patent attorney Foreign attorney Atsushi Procedural amendments 1932/1930 → Japan Patent Office Commissioner Kunio Ogawa 1, Indication of case Patent application No. 1983-300362 2, Title of invention Tape drive device 3, Amendment Patent applicant (037) Olympus Optical Industry Co., Ltd. 4, Agent 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo tlBE Building 1
00 Telephone 03 (502>3181 (main representative) 6,
Drawings to be amended 7, contents of amendment

Claims (1)

[Claims] a rotating member that rotates in accordance with the rotation of the motor; a gear that is provided on the rotating member to receive rotational force from the motor and that is interlocked with a winding shaft by rotation of the rotating member; and a rewinding gear. A tape drive device comprising: a rocking gear that selectively meshes with a gear that is interlocked with a shaft; and a biasing member that biases the rotating member in a direction opposite to the direction of rotation by the motor.