JPH01149251A - Tape recorder - Google Patents

Abstract

PURPOSE:To reduce the time required for setting a fast forward or fast rewinding mode by setting a magnetic head and a pinch roller in other specified positions respectively at the time of ejecting a tape cassette. CONSTITUTION:At the time of ejecting the tape cassette, the magnetic head 128 and the pinch roller 142 can be set by a slide lever 28 into their 1st positions as widely withdrawn from the tape, and the pinch roller 142 and the magnetic head 128 are selectively set into their 2nd positions, where the pinch roller 142 is pressed by a capstan 44 and the magnetic head 128 is abutted against the tape. Moreover, their 3rd positions, where the pinch roller 142 is slightly separated from the capstan 44 and the magnetic head 128 is abutted against the tape, can selectively be set, and in addition, their 4th positions, where the pinch roller 142 is in a prescribed position between the 1st position and the 3rd position and the magnetic head 128 is separated from the tape, can selectively be set as well. By this method, the required time for setting the fast forward or rewinding mode can be reduced.

Description

[Detailed description of the invention] (Industrial application field) This invention relates to tape recorders.

(Prior Art) JP-A-56-124149 discloses a tape recorder in which a magnetic head and a pinch roller are moved in advance to a position where they come into contact with the tape in conjunction with the operation of a power switch to the ON position. In this tape recorder, since the magnetic head and the pinch roller are already in contact with the tape when setting the recording mode or reproduction mode to the tape recorder, no transit noise is generated.

(Problem to be Solved by the Invention) However, when setting the tape recorder to fast forward or fast rewind mode, which requires the magnetic head and pinch roller to be separated from the tape by a large distance, similar to setting the eject mode, these If setting the mode is done manually, it requires a relatively large amount of fingertip force; if it is done electrically, it consumes a large amount of power; Necessity (Means for Solving Problems) This invention was made under the above circumstances, and the purpose of this invention is to reduce the consumption of fingertip force and power required to set fast forward and fast rewind modes on a tape recorder. Decrease '6t! It is an object of the present invention to provide a tape recorder that can not only reduce the time required for the above settings but also reduce the time required for the above settings.

The object of the present invention as described above is to provide a first setting means for setting a magnetic head and a pinch roller to a first position largely retracted from the tape when ejecting a tape cassette;
a second setting means for setting the pinch roller and the magnetic head at a second position where the pinch roller presses the capstan and the magnetic head contacts the tape; and a second setting means for setting the pinch roller and the magnetic head at a second position where the pinch roller presses the capstan and the magnetic head contacts the tape; a third position in which the pinch roller and the magnetic head are set in a third position where they contact each other;
and a fourth setting means for setting the pinch roller and the magnetic head at a fourth position where the pinch roller is at a predetermined position between the first position and the third position and the magnetic head is spaced from the tape. This can be achieved by the tape recorder according to the present invention, which is characterized in that it is equipped with a setting means.

(Function) In the tape recorder according to the present invention, which is configured as described above, when the tape cassette is ejected, the first setting means moves the magnetic head and the pinch roller to the first position, which is largely retreated from the tape. Set.

A second setting means provided in the tape recorder according to the present invention selectively sets the pinch roller and the magnetic head to a second position where the pinch roller is pressed against the capstan and the magnetic head is in contact with the tape. I can do it. In the tape recorder according to the present invention, the pinch roller and the magnetic head are further selectively set by a third setting means to a third position where the pinch roller is slightly separated from the capstan and the magnetic head is in contact with the tape. The pinch roller can be set to the first setting by the fourth setting means.
It is also possible to selectively set the magnetic head to a fourth position, which is located at a predetermined position between this position and the third position, and the magnetic head is spaced apart from the tape.

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

(Embodiment) In FIG. 1, a tape recorder chassis 10 according to an embodiment of the present invention is shown from the front side. The various components of the power transmission mechanism are indicated by dash-dot lines. The above-mentioned tape recorder is a handy type tape recorder that uses a tape cassette called a microcassette.

A take-up reel shaft and a rewind reel shaft (not shown) are arranged on the front side of the chassis 10, and the bases of the rotation center shafts 12 and 14 of each of the take-up reel shaft and the rewind reel shaft are formed in the chassis 10. It is fixed to a tongue piece 20.degree. 22 which is inserted into the opening 16.18 and bent from the periphery of the opening 16.degree. 18 to the back side.

A rotation center shaft 12 located on the back side of the chassis 10.
A take-up reel gear 2.4 and a rewind reel gear 26, which are concentrically connected to the take-up reel shaft and the unwind reel shaft through known slips In41iI, are rotatably attached to the base of the rewind reel shaft 14. ing.

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. I have 29. The sliding operation lever 28 is guided so as 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
There are four positioning recesses 32, 34, 36, 37 on the lower edge of the
are continuously formed, and these positioning recesses 32
, 34, 36, 37 is engaged with a roller 40 rotatably attached to the other end of a leaf spring 38, one end of which is fixed to the side wall of the chassis 10.

Four positioning recesses 32, 34, 36, 37 on the lower edge of the sliding operation lever 28 and four positioning recesses 32, 34, 36 rotatably supported by a leaf spring 38 fixed to the side wall of the chassis 10. The roller 40 that engages with any one of .37 means that the sliding operating lever 28 is
A so-called click button that selectively holds two parts in place
It has a stop mechanism.

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
Drive teeth 1i48 are concentrically fixed to the upper surface of the flywheel 46, which is opposite to the back 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 fixed to the chassis 10 on the side of the chassis 1Cj. The motor 50 rotates only in one direction shown by arrow A at a predetermined speed.

One end of a rotary lever 56 is attached to the outer peripheral surface of the bearing 42 on the chassis 10 between the rear surface of the chassis 10 and the drive gear 48 of the flywheel 46 so that it can freely rotate along the rear surface of the chassis 10. A large-diameter first swing gear 58 that meshes with the drive gear 48 is rotatably attached to the other end of the pivot lever 56. The first oscillating gear 58 has a second oscillating gear 60 of a smaller diameter integrally formed concentrically on the outer surface of the oscillating lever 56 opposite to the first oscillating gear 58 .
The second rocking gear 60 meshes with the take-up reel gear 24.

The rotating lever 56 is equipped with an abutting pin 62 at one end on the sliding operating lever 28 side, and when the abutting pin 62 comes into contact with the upper edge of the sliding operating lever 28, the rotating lever 56 is connected 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 2
6, and is located in the same plane as a 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 of a small diameter is attached to the rapid traverse idler gear 66 so as to be rotatable with respect to a rotation center shaft 74 implanted on the back surface of the chassis 10 (X). The 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, so that the pivot lever 56 is It is located within the extension of the movement locus drawn by the large-diameter first rocking gear 58 when it rotates counterclockwise on the outer circumferential surface of the gear 42 .

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 .

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

At the left corner of the back surface of the chassis 10, a fast forward lever (hereinafter referred to as FF lever) 80, which has an abbreviated shape as shown in detail in FIG. 2, is arranged. The FF lever 80 has a long piece extending along the left edge of the chassis 10, and a fast forward lever operation button (hereinafter referred to as FF operation button) protruding further downward from the lower edge of the chassis 10 at the end of the short piece. ) 82. The FF lever 80 is guided to move vertically by a pair of guide pins 84 and 86 installed on the back surface of the chassis 10, and a guide pin 84 at the left corner is formed at the lower end of the long piece of the FF lever 80. It is inserted into a guide hole 88 extending in the vertical direction. F
The F lever 80 is biased toward its lower end position relative to the chassis 10 by a compression coil spring 89 interposed between the FF operation button 82 and the front wall of the chassis 10 . The FF lever 80 also has another one at the upper end of its long piece that extends to the left of the second fast-forward idler gear 76.
It has two guide holes 90.

As shown in detail in FIG. 2, the guide hole 90 consists of a portion extending in the vertical direction and a portion extending diagonally downward to the right from the lower end of the vertically extending portion.

On the back side of the FF lever 80 that is far from the back side of the chassis 10, there is an overlapping eject lever 92 extending in the vertical direction, and the eject lever 〇2 is also connected to a pair of guide pins 84 and 86 on the back side of the chassis 10. Chassis 10 by
It is guided vertically along the back side of the screen. As shown in detail in FIG. 3, the lower end of the eject lever 92 is also formed with a guide hole 94 extending in the vertical direction into which the guide pin 84 at the left corner of the chassis 10 is inserted. The lever 92 is connected to the chassis 10 by a compression coil spring 98 interposed between an eject lever operation button (hereinafter referred to as an eject operation section) 96 protruding further downward from the lower edge of the chassis 1o and the front wall of the chassis 10. It is biased to its own lower end position. As shown in FIG. 1, the FF lever 80 and the eject lever 92 are adjacent to each other.

The eject lever 92 has an extending portion 100 extending rightward from its lower end along the lower edge of the chassis 10, and has an upper edge of the extending portion 100 that slides away from the back surface of the chassis 10. An escape hole 10 is provided at a position facing the locking pin 102 that extends from the left side extension of the operation lever 28.
4 is formed.

The ejector lever 92 also has a head arm drive protrusion 106 that protrudes to the right above the extension 100.

A cassette holder drive lever 108 is rotatably attached to the upper end of the eject lever 92 on the back surface farther from the back surface of the chassis 10 . A hook 110 protruding leftward is formed on the left edge of the lower end of the cassette holder drive lever 108, and a guide pin 112 protruding toward the back surface of the chassis 10 is formed on the right edge of the upper end.
is formed. The guide pin 112 passes through an opening 114 formed at the upper end of the eject lever 92 and is further inserted into the guide hole 90 at the upper end of the FF lever 80. When the eject lever 92 and the FF lever 80 are arranged at the lower end positions as shown in FIG.
The hook 110 is located at the lower end of the diagonally downwardly extending portion of the guide hole 90 of the lever 80, and the hook 110 does not protrude leftward from the left end of the chassis 10.

Hook 1 of the cassette holder drive lever 108 on the eject lever 92 located at the lower end position shown in FIG.
10, there is one end of a cassette holder locking lever 116 for holding a cassette holder (not shown), which is provided on the front side of the chassis 10 so as to be openable and closable, in a closed position. It extends along the left side wall of the chassis 10 to the back side of the chassis 10. The cassette holder locking lever 116 connects the above one end to the chassis 1.
By being pressed upward along the left side wall of 0, the engagement with the cassette holder (not shown) is released, and the cassette holder (not shown) is thereby moved from the closed position to the open position by the urging force of the urging means (not shown). to eject the tape cassette from this tape recorder.

The eject lever 92 has a 1ζ engagement protrusion 118 that protrudes leftward from the left edge, and the FF lever 80 has an eject lever drive pin (hereinafter referred to as a drive pin) bent from the left edge in a direction away from the back surface of the chassis 10. ) 120. Eject lever 92 and FF lever 80
1, the engagement protrusion 118 of the eject lever 92 is adjacent to the upper side of the drive bin 120 of the FF lever 80, as shown in FIG.

On the upper surface of the chassis 10, as shown in FIG. 4, cassette position determining bins 122 are installed on both the left and right sides of the capstan 44. A head support arm 124 is also arranged on the upper surface of the shark 10 and extends in the left-right direction along the barrier wall of the chassis 10. FIG. 5 shows the detailed shape of the head support arm 124, and the head support arm 124 has a rotation center implanted on the surface of the chassis 10 at a portion near the left end of the center of the area along the upper edge. It is mounted so as to be rotatable about an axis 126 parallel to the surface of the chassis 10 .

A magnetic head 128 is attached to the upper surface of the head support arm 124 at a position corresponding to between the capstan 44 and the cassette position setting bin 122 on the right side. The left end of the head support arm 124 extends over an opening 130 formed in the chassis 10;
An engaging protrusion 132 protruding inside is formed. The head support arm 124 has a rotation center shaft 126 and a magnetic head 1.
An opening 136 corresponding to the opening 134 of the chassis 10 is formed between the rotation center axis 12 and the opening 136 .
The upper surface of the chassis 10, which has a shape resembling an arc around the head support arm 124, also has a cylindrical surface mounted on the surface of the chassis 10 in the vicinity of the left side of the rotation center axis 126 of the head support arm 124, as shown in FIG. The rotation center axis 13 provided
A pinch roller support lever 140 is disposed with one end attached so as to be rotatable in parallel to the surface of the chassis 10 around the chassis 10 . The other end of the pinch roller support lever 140 extends to the right on the upper surface of the head support arm 124, and rotatably supports the pinch roller 142. The pinch roller support lever 140 has a substantially U-shaped cross section, is supported by the rotation center shaft 138 by an upper piece and a lower piece, and also supports the pinch roller 142; In order to make the drawings easier to read, the upper part is omitted. FIG. 6 shows the shape of the pinch roller support lever 140 in detail.

A torsion coil spring 144 is wound around the rotation center shaft 138 of the pinch roller support lever 140. One end of the torsion coil spring 144 is inserted into a through hole formed in the front wall of the chassis 10, and the other end is attached to the rotation center shaft 138 of the pinch roller support lever 140. Roller support lever 1
The pinch roller support lever 140 is inserted into a through hole formed in the side wall of the pinch roller support lever 140 in a counterclockwise direction.

An engagement pin 146 formed at one end of the pinch roller support lever 140 so as to protrude downward is engaged with the upper edge of the left end of the head support arm 124, thereby preventing the head support arm 124 from twisting. coil spring 1
Together with the pinch roller support lever 140, it is urged counterclockwise by the urging force of 44.

The engagement protrusion 132 at the left end of the head support arm 124 is engaged with an engagement hook 150 at one end of an engagement lever 148 whose central portion is rotatably attached to the back surface of the chassis 10. The other end 152 is the chassis 1
0 and protrudes toward the front surface through the opening 130. At the other end 152 of the engagement lever 148, there is a torsion coil spring 154, which is wound around a small protrusion on the surface of the chassis 10 and whose one end is fixed to the rotation center shaft 138 for the pinch roller support lever 140. The ends are closed.

The torsion coil spring 154 biases the engagement lever 148 in a counterclockwise direction.

The right end of the head support arm 124 is pressed onto the surface of the chassis 10 by a leaf spring 156 fixed to the right side wall of the chassis 10, and is located at a position a predetermined distance above the upper edge of the right end of the head support arm 124. A stop bin 158 is formed rising from the surface of the chassis 10.

A guide pin 160 inserted through the opening 136 of the head support arm 124 and the opening 134 of the chassis 10 is implanted on the back surface of the lower piece of the pinch roller support lever 140.

The guide pin 160 protrudes further to the rear from the back surface of the chassis 10, and is inserted into a guide hole 162 formed in the center of the sliding operation lever 28 on the back surface of the chassis 10, as shown in FIG. There is.

Further, on the surface of the chassis 10, as shown in FIG.
An erasure lever 163 is arranged along the right end of the front wall of the chassis 10 and extends in the left-right direction. The shape of the erase lever 163 is also shown in detail in FIG. The erasing lever 163 is equipped with an erasing head 164 made of a permanent magnet on the right end, and the chassis 1 on the left end.
The chassis 10 is mounted on a rotation center shaft 166 implanted on the surface of the chassis 10 so as to be rotatable parallel to the surface of the chassis 10. A torsion coil spring 168 is wound around the rotation center shaft 166 and has one end in contact with the front wall of the chassis 10 and the other end is hooked to the front edge of the erasure lever 163. 163 in the counterclockwise direction.

A cam protrusion 170 protruding into the through hole of the front wall of the chassis 10 is formed on the lower edge of the eraser lever 163, and the operation button of the slide slide type operation lever 28 is mounted on a cam drive on the extension. The protrusion 172 is erased by the ladder lever 163.
The cam projection 170 is in contact with the left edge of the cam projection 170.

An abutment pin 174 is formed on the head support arm 124 above the upper edge of the eraser lever 163 and protrudes forward from the surface of the chassis 10.

In the cheap record configured as described above,
As shown in FIG. 1, the four positioning recesses 32, 34, 3 of the click-stop mechanism of the sliding operating lever 28
A click-stop roller 40 is seated in the second positioning recess 34 from the left in 6.37, and the engagement protrusion 132 at the 'ti end of the head support arm 124 engages the engagement lever of the chassis 10. When engaged with the engagement hook 150 of 148, the cassette holder (not shown) is placed in the open position. In addition, the motor 50 and the magnetic head 128
A starting switch (not shown) for this purpose is turned off.

Furthermore, the guide pin 160 on the back surface of the pinch roller support lever 140 is located in the diagonally lower left region of the guide hole 162 in the center of the sliding operating lever 28, as shown by the solid line in FIG. The mode of the tape recorder at this time is the eject mode. Here, the magnetic head 128 and the pinch roller 142 are stored in a tape cassette (not shown) when placed at a predetermined position on the chassis 10 as will be described later, contact the capstan 44 on the lower side, and extend in the left-right direction. The distance from the magnetic recording tape (not shown) is the greatest compared to various other modes described later.

When a tape cassette (not shown) is attached to a cassette holder (not shown) placed in the open position and then the cassette holder (not shown) is moved to the closed position, the chassis 10 is attached to the pair of reel hubs of the tape cassette in the cassette holder.
A pair of take-up reel shafts and a rewind reel shaft connected to the take-up reel gear 24 and unwind reel gear 26 are mounted, and one of the chassis 10 is inserted into the pair of positioning holes of the tape cassette. By inserting the pair of cassette position setting pins 122, the tape cassette is placed at a predetermined position on the chassis 10, and the cassette holder (not shown) is a cassette holder whose part is shown on the left side wall of the chassis 10. It is held in the closed position by a locking lever 116. A tape cassette (not shown) placed at a predetermined position on the chassis 10 contacts the other end 152 of the engagement lever 148 extending into the opening 130 at the left corner of the chassis 10 and presses it downward in FIG. death,
As a result, the engagement lever 148 is activated by the torsion coil spring 1.
The head support arm 124 is rotated clockwise against the biasing force of the head support arm 124 to release the engagement with the engagement protrusion 132 at the left end of the head support arm 124. Then, the head support arm 124 moves together with the pinch roller support lever 140.
40 is rotated counterclockwise by the biasing force of the torsion coil spring 144 on the rotation center shaft 138.

Such counterclockwise rotation of the pinch roller support lever 140 causes the guide pin 160 on the back side of the pinch roller support lever 140 to move to the upper end of the diagonally lower left region of the guide hole 162 in the center of the sliding operation lever 28. A trapezoidal protrusion 1 is formed to protrude into the guide hole 162 in accordance with the
76, as shown by the double dotted line in FIG. 1, it comes into contact and stops. At this time, the pinch roller support lever 140
The upper pinch roller 142 is slightly spaced from the capstan 44, as shown in detail in FIG. When the pinch roller support lever 140 stops rotating as described above, the head support arm 124 continues to rotate due to inertia due to the IIJ friction force generated between it and the leaf spring 156 on the right side wall of the chassis 10. The rotation is stopped together with the pinch roller support lever 140 without any movement. The upper edge of the pinch roller support lever 140 that has stopped rotating is slightly spaced downward from the stop bin 158 near the side wall of the chassis 10, as shown in FIG. When placed at a predetermined position on the tape 10, the magnetic recording tape 178 is stored in a tape cassette (not shown), contacts the capstan 44 on the lower side, and lightly contacts the magnetic recording tape 178 extending in the left-right direction.

The tape recorder mode at this time is standby (preparation).
mode, and the starting switches (not shown) for the motor 50 and magnetic head 128 are still OFF.

Next, move the sliding operating lever 28 to the arrow B in FIG.
When the roller 40 of the click-stop mechanism is moved to the right as shown by , until the roller 40 of the click-stop mechanism is seated in the first positioning recess 32 from the left of the click-stop mechanism of the sliding operating lever 28. A record mode is set on a tape recorder according to an embodiment of the present invention. In the record mode, the guide pin 160 on the back side of the pinch roller support lever 140 is located on the left side of the trapezoidal protrusion 176 on the upper edge of the guide hole 162 of the slide operation lever 28 which is placed in the record mode setting position. is disposed in a recess 180 of. For this reason, the pinch roller support lever 140 is supported by the torsion coil spring 1.
Due to the biasing force of 44, the magnetic recording tape 17 on the capstan 44 is further rotated counterclockwise from the standby mode setting position shown in FIG. 7, as shown in FIG.
8 is held and pressed onto the capstan 44.

Rad lever 16 to erase in record mode
3, the cam protrusion 170 is activated by the cam drive protrusion 172 on the operation button support extension of the sliding operation lever 20 which is placed in the record (recording) mode setting position.
As shown in the figure, by being pressed upward, it rotates counterclockwise from the position shown in FIG. 7 against the biasing force of the torsion coil spring 168. The engagement pin 146 of the pinch roller support lever 140, which has been rotated counterclockwise by the biasing force of the torsion coil spring 144 until it comes into contact with the capstan 44, is connected to the head support arm 124! It is rotated together with the pinch roller support lever 140 from the standby position shown in FIG. Such rotation of the head support arm 124 causes the right end of the upper edge of the head support arm 124 to be placed in the eighth position near the right side wall of the chassis 10.
It is stopped by coming into contact with it as shown in the figure. Here, the magnetic head 128 presses against the magnetic recording tape 178 as shown in FIG.

Erase head support lever 163 rotated counterclockwise
The abutment bin 17 whose upper edge is the lower edge of the head support arm 124
4, the rotation of the erasing head support lever 163 is stopped, and at this point, the spreading head 164 is also pressing against the magnetic recording chip 7178, as shown in FIG.

When the sliding operation lever 28 is placed in the record mode setting position as described above, a magnetic head function selection switch (not shown) is set to the record mode, and a start switch (not shown) starts the magnetic head 128 and motor 50.

The drive gear 48 of the flywheel 46 to which the rotational force from the output shaft of the motor 50 is transmitted moves the rotary lever 56 to the motor 5.
The same direction as the rotation direction of the output shaft of 0, that is, arrow C in FIG.
When trying to rotate it in the clockwise direction shown by
By abutting the upper edge of the pivot lever 56, rotation of the pivot lever 56 in the clockwise direction from the position shown in FIG. 1 is prevented. Therefore, the engagement of the small-diameter second swing gear 60 on the rotation lever 56 with the take-up reel gear 24 is maintained, and the motor 5
The rotational force from the output shaft 0 is transmitted to the take-up reel gear 24.

In the record mode, the magnetic recording tape 178 is transferred to the rewind reel gear 26 to which the rotational force from the output shaft of the motor 50 is not transmitted. The capstan 44 is inserted from above the reel hub (not shown) on the rewinding reel shaft (not shown) which is dry.
The magnetic head 128 and the erase head 164 perform magnetic recording on the magnetic recording chip 1178 between the unwinding reel shaft (not shown) and the capstan 44. The magnetic recording tape 178 that has passed between the capstan 44 and the pinch roller 142 is placed 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. is wound onto a reel hub (not shown).

This time, the sliding operation lever 28 moves to the left and clicks.
When the roller 40 of the stop fIIiI4 is moved until it is seated in the third positioning recess 36 from the left of the click lug structure on the lower edge of the sliding operating lever 28, the embodiment of the present invention A play mode is set for tape recorders that comply with the above.

When the sliding operation lever 28 is placed in the play mode setting position, the pinch roller support lever 14
The guide pin 160 on the back side of 0 is the sliding operation lever 28
is seated in a recess 182 located to the right of the trapezoidal projection 176 on the upper edge in the guide hole 162 in the central part of.

The play mode is different from the record mode described above because the erasing head 163 remains in the same position as in FIG. 1, separated from the magnetic recording tape 178, as shown in FIG. Yes, the magnetic head function selection switch (not shown) for the magnetic head 128 is activated (
playback) mode. The erasing head 163 erases the magnetic recording tape 178 as shown in FIG.
The cam drive protrusion 172 on the operation button support extension of the sliding operation lever 28 located in the play mode setting position remains in the same position as in FIG. As shown in FIG.
This is because it is spaced to the left from the cam protrusion 170.

Therefore, in the play mode, the magnetic head 12
Reference numeral 8 indicates a predetermined speed by the capstan 44 and the pinch roller 142 from above the reel hub (not shown) 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. For reproduction, the magnetic recording tape 178 is pulled out by the capstan 44 and the pinch row 51.
42, the magnetic recording tape 178 is placed on a reel hub (not shown) on a take-up reel shaft (not shown) connected to the take-up reel gear 24 to which the rotational force from the output shaft of the motor 50 is transmitted. be wound up.

The sliding operating lever 28 moves to the left until the click-stop mechanism roller 40 seats in the fourth WI positioning recess 37 from the left of the click-stop mechanism at the lower edge of the sliding operating lever 28. Then, the beam view mode is set in the tape recorder according to the embodiment of the present invention.

When the sliding operation lever 28 is placed in the view mode setting position, the guide pin 160 on the back side of the pinch roller support lever 140 extends diagonally downward to the right in the guide hole 162 in the center of the sliding operation lever 28. 184 and descends to the approximate center of the edge. As a result, the pinch roller support lever 140 is turned clockwise against the biasing force of the torsion coil spring 144, thereby separating the pinch roller 142 from the capstan 44 as shown in FIG. The distance that the pinch roller 142 is separated from the capstan 44 in the review mode is smaller than that in the eject mode shown in FIG. greater than the distance. To change from standby mode or record mode to review mode, it is necessary to go through the play mode described above, so the head support arm 124 is first moved to the play mode position shown in FIG. 9 by the capstan support lever 140. After being moved, only the capstan support lever 140 is moved slightly away from the magnetic recording tape 178 as described above, and the head support arm 124 is moved to the position shown in FIG. be left in the same position.

When the sliding operation lever 28 is placed in the review mode setting position as described above, the magnetic head function selection switch (not shown) is set to the play mode, and the start switch (not shown) starts the magnetic head 128 and the motor 50. A notch 78 on the upper edge of the sliding operation lever 28 is arranged at a position facing the abutting pin 62 of the rotary lever 56.

Here, the drive gear 48 of the flywheel 46 to which the rotational force from the output shaft of the motor 50 is transmitted is transferred to the rotary lever 5.
6 in the same direction as the rotational direction of the output shaft of the motor 50, that is, in the clockwise direction shown by arrow C in FIG. The lever 56 is inserted into the notch 78 in the upper edge of the lever 56 and rotated clockwise from the position shown in FIG. Therefore, from the take-up reel gear 24 to the rotation lever 5
The small-diameter second oscillating wheel 60 on 6 moves away, and the large-diameter first oscillating wheel 60 moves away instead. 1 wheel 58 is the rewinding idler gear 6
6, and the rotational force from the output shaft of the motor 50 is transmitted to the rewind reel gear 26.

Therefore, the magnetic recording tape 178 is pulled out from a reel hub (not shown) on a take-up reel shaft (not shown) connected to the take-up reel gear 24 to which the rotational force from the output shaft of the motor 50 is not transmitted, and then Rewinding reel gear 26 to which the rotational force from the output shaft of 50 is transmitted.
The magnetic head 1 is wound onto a reel hub (not shown) on a rewinding reel shaft (not shown) connected to the magnetic head 1.
28 reads information magnetically recorded in the magnetic recording chip 1178 for reproduction.

The sliding operating lever 28 is formed on the left side, and the roller 40 of the click-stop gate mechanism is formed on the right side of the fourth positioning recess 37 from the left of the click-stop mechanism at the lower edge of the sliding operating lever 28. Once moved onto the slope, the tape recorder according to an embodiment of the present invention is set to a rewind mode.

When the sliding operation lever 28 is placed in the rewind mode setting position, the guide bin 160 on the back side of the pinch roller support lever 140 is located in the diagonally lower right extending area 184 in the guide hole 162 in the center of the sliding operation lever 28. It further slides on the right edge and descends to near the lower end on the right edge. As a result, the pinch roller support lever 140 further rotates clockwise from the position shown in FIG. The capstan 44 is moved further away from the capstan 44 than the position shown in FIG. The guide pin 160 on the back side of the pinch roller support lever 140, which is further rotated clockwise from the position in the review mode, comes into contact with the lower end of the opening 136 in the center of the head support arm 124.
4 in the clockwise direction together with the pinch roller support lever 140, and as a result, the magnetic head 128 moves to the first position.
1, it is separated from the magnetic recording tape 178. The distance that the pinch roller 142 is separated from the capstan 44 in the rewind mode is smaller than the above-mentioned distance in the eject mode shown in FIG. It is larger than the above distance.

When the sliding operation lever 28 is placed in the wind mode setting position as described above, the magnetic head function selection switch (not shown) remains in the play mode setting position, and the starting switch (not shown) starts the magnetic head 128 and motor 50. , and a sliding operation lever 28
The notch 78 in the upper edge of also remains positioned opposite the abutment pin 62 of the pivot lever 56.

Therefore, here again, the rotational force from the output shaft of the motor 50 is transmitted to the rewinding reel tooth 26 in the same manner as described above and in the view mode. The magnetic recording tape 178 pulled out from the reel hub (not shown) on the take-up reel shaft (not shown) connected to the take-up reel gear 24 to which the rotational force from the output shaft of the motor 50 is not transmitted is the output shaft of the motor 50. The magnetic head 128, which is wound on a reel hub (not shown) on a rewind reel shaft (not shown) connected to the rewind reel teeth 1i26 to which the rotational force from No action is taken on the magnetic recording chip 7178 that is running as described above.

Next, when the sliding operation lever 28 is placed in the standby mode setting position shown in FIG.
When the lever 80 is pressed upward against the biasing force of the compression coil spring 89, the drive pin 12 on the left edge of the FF lever 80
0 engages with the engagement protrusion 118 on the left edge of the eject lever 80 and presses the eject lever 80 upward. Here, the lower end of the eject lever 80 extends to the right.
Since the relief hole 104 of 00 faces the locking pin 102 of the leftward extension of the sliding operation lever 28, the eject lever 80 is not blocked by the locking pin 102 and the ejector lever 80 is attached to the compression coil spring 98. It can move upward together with the FF lever 80 against the force. The helad arm drive protrusion 106 of the eject lever 80 that has moved upward is the first
As shown in FIG. 2, the head support arm 124 is engaged with the engagement protrusion 132 at the left end of the head support arm 124 to rotate the head support arm 124 clockwise, and as a result, the magnetic head 128 is separated from the magnetic recording tape 178.

The upper edge of the head support arm 124 rotating clockwise comes into contact with the engagement pin 146 of the pinch roller support lever 140 and presses the engagement pin 146 upward, thereby causing the pinch roller support lever 140 to act as a torsion coil spring. 144
The pinch roller 1 rotates clockwise together with the head support arm 124 against the urging force of the pinch roller 1 as shown in FIG.
42 is separated from the magnetic recording tape 178. The positions of the head support arm 124 and the pinch roller support lever 140 shown in FIG. 12 when both the FF lever 80 and the eject lever 80 have moved to the upper end position are the positions shown in FIG. 4 in the eject mode. Same as position.

When the FF lever 80 is pressed upward, the FF lever 80
A forced rotation lever (not shown) that is linked to rotates the rotation lever 56 in a counterclockwise direction from the position shown in FIG. The lever 60 moves away from the take-up reel gear 24 and the larger diameter second swinging lever 60 engages the second fast-forward idler gear 76 instead. When the FF lever 80 is pressed upward, the output shaft of the motor 50 starts rotating at a predetermined speed in the clockwise direction indicated by arrow A, and the motor 50
The rotational force from the output shaft of is transmitted through the drive gear 48 of the flywheel 46, the large-diameter second swing lever 60, the second fast-forward idler gear 76, the first fast-forward idler gear 72, and the fast-forward gear 70. It is transmitted to the take-up reel gear 24. As a result, the magnetic recording chip 7178
The rotational force from the output shaft of the motor 50 is transmitted after being pulled out from above the reel hub (not shown) on the rewinding reel shaft (not shown) connected to the rewinding reel gear 26 to which the rotational force from the output shaft of the motor 50 is not transmitted. The magnetic head 128, which is wound on a reel hub (not shown) on a take-up reel shaft (not shown) connected to the take-up reel gear 24, which is spaced apart from the magnetic recording tape 178, runs as described above. There is no effect on the magnetic recording chip 1178 that is present.

Now, when the sliding operation lever 28 is placed in the standby mode setting position shown in FIG. The cassette holder drive lever 108 at the top of the eject lever 96 is connected to the guide bin 112.
is rotated clockwise by being guided by the guide hole 90 at the upper part of the FF lever 80, causing the hook 110 to protrude from the left end of the chassis 10. The blade arm drive lever 106 of the eject lever 96 that moves upward is connected to the head support arm 124 in the same way as when setting the FF mode described above.
Then, the pinch roller support lever 140 is rotated clockwise against the urging force of the torsion coil spring 144. When the hook 110 of the head arm drive lever 106 protruding from the end of the chassis 10 presses upward a part of the cassette holder locking lever 116 disposed along the left side wall of the chassis 10, the cassette holder locking lever is closed. 11
6 releases the lock on the illustrated cassette holder,
As a result, the cassette holder (not shown) is moved from the closed position to the open position by the biasing means (not shown), and the tape cassette (not shown) is ejected from a predetermined position on the surface of the chassis 10.

When the tape cassette (not shown) is ejected from a predetermined position on the surface of the chassis 10 , the engagement lever 148 , which releases the pressing force from the tape cassette (not shown) to the other end 152 , torsion coil spring 154 .
The engaging hook 15 rotates counterclockwise due to the urging force of
0 is engaged with the engagement protrusion 132 on the other end of the head support arm 124 as shown in FIG. This state is the eject mode shown in FIG.

As detailed above, the tape recorder according to the present invention has the following functions:
a first setting means for setting the magnetic head and the pinch roller at a first position where the magnetic head and the pinch roller are largely retreated from the tape when ejecting the tape cassette; and a second position where the pinch roller presses the capstan and the magnetic head comes into contact with the tape. a second setting means for setting the pinch roller and the magnetic head; and a third setting means for setting the pinch roller and the magnetic head at a third position where the pinch roller is slightly separated from the capstan and the magnetic head is in contact with the tape. and fourth setting means for setting the pinch roller and the magnetic head at a fourth position where the pinch roller is at a predetermined position between the first position and the third position and the magnetic head is spaced apart from the tape. This not only reduces the amount of finger effort and power consumption required to set the fast forward or rewind mode on the tape recorder, but also reduces the time required for the above settings. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a schematic view of various power transmission mechanisms on the back side of the chassis of the tape recorder according to an embodiment of the present invention when the rejiku l-mode is set, as viewed from the front side of the chassis. Figures 2 and 3 are plan views showing the fast forward lever (FF lever) and eject lever in Figure 1; Figure 4 shows the front side of the tape recorder chassis in Figure 1; Schematic plan view as seen: FIG. 5 is a plan view showing the head support arm in FIG. 4 together with a part of the chassis; FIG. 6 is a plan view showing the erase head support lever and pinch roller support lever in FIG. 4 Figure 7 shows the head support arm, erase head support lever, and pinch roller support lever of the chassis when the standby mode is set for the tape recorder in Figure 1. A plan view showing some parts of the tape recorder: Figure 8 shows the head support arm, erasing head support lever, and pinch roller support lever in the chassis when the record (8! sound) mode is set in the tape recorder shown in Figure 1. Figure 9 shows the head support arm, erasing head support lever, and pinch roller support lever together with part of the chassis when the tape recorder of Figure 1 is set to play mode. Fig. 10 is a plan view showing the head support arm, erasing head support lever, and pinch roller support lever together with a part of the chassis when the review mode is set in the tape recorder shown in Fig. 1; 12 is a plan view of the tape recorder shown in FIG. 1 in which the head support arm, erasing head support lever, and pinch roller support lever are not shown together with a portion of the chassis when the rewind (fast rewind) mode is set; 1 is a plan view showing a head support arm, an erasing head support lever, and a pinch roller support lever together with a part of the chassis when a fast forward mode is set in the tape recorder of FIG. 1. 10... Chassis, 24... Take-up reel gear, 2
6... Rewinding reel gear, 28... Sliding operation lever, 44... Capstan, 46... Flywheel, 50... Motor, 122... Cassette position establishment pin, 124...・Head support arm, 128...
・Magnetic head, 140...pinch roller support lever,
142...Pinch roller, 160...Guide pin (head position establishing means), 162...Guide hole (head position establishing means), 163...Rad lever to erase, 164...
...Erasing head, 178...Magnetic recording tape. Applicant's agent Patent attorney Uki Tsuboi 5'7! Figure 2 Figure 3 Procedural amendment January 8, 1988 Kunio Ogawa, Commissioner of the Patent Office 1, Indication of the case Patent Application No. 1982-306155 2, Name of the invention Tape code 3, Relationship with the case of the person making the amendment Patent applicant (037) Olympus Optical Industry Co., Ltd. 4, Agent IP-E Building, 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo
oo Telephone 03 (502>3181 (main representative)) As shown in the attached sheet (no change in content)

Claims (1)

[Claims] a first setting means for setting the magnetic head and the pinch roller at a first position where the magnetic head and the pinch roller are largely retreated from the tape when ejecting the tape cassette; and a second position where the pinch roller presses the capstan and the magnetic head comes into contact with the tape. a second setting means for setting the pinch roller and the magnetic head;
a third setting means for setting the pinch roller and the magnetic head at a third position where the pinch roller is slightly spaced apart from the capstan and the magnetic head is in contact with the tape; and a fourth setting means for setting the pinch roller and the magnetic head to a fourth position where the magnetic head is spaced apart from the tape.