JPS5832251A - Recording device for tape recorder - Google Patents

Abstract

PURPOSE:To perform recording in a forward direction only, by operating a recording button which can be depressed, only when a magnetic head for the forward playing on a head lever is set to the operating position. CONSTITUTION:In case when a mechanism constitutent 2 is situated at a position to be drawn out, when a recording button is manually depressed, this depressing force is exerted to a moving frame 10 of the mechanism constituent 2 as a pushing force to push the constituent 2 into a device main body 1. In this state, a head supporting lever 71 is shaken with a counterclockwise torque to be in the forward reproduction state, and the forward recording can be performed by depressing a recording lever 53 with the recording button and contacting an erasing head 62 on a tape. In the tape reverse reproduction state, however, since the head supporting lever 71 is inversely shaken, the depressed movement of the recording lever 53 is blocked, thereby disabling the recording button to be operated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder having a built-in tape reversing drive mechanism and a mechanism structure having a cassette mounting portion that can be freely drawn out from the main body of the device.

As is well known, the microcassette tape is driven by a capstan and a pinch roller located at the center of the cassette. The present invention provides a novel reversible tape recorder for playing microcassettes.

Such a reversible tape recorder for micro cassettes has a central capstan that rotates in forward and reverse directions, and the left and right sides of the capstan are switched into an operating position and a non-operating position in relation to the running direction of the tape, for forward play and reverse play. magnetic heads are arranged.

The present invention provides that when this type of tape recorder is provided with a one-way recording mechanism, a head support lever that selectively brings the forward direction playing magnetic head and the backward direction playing magnetic head to the 'operating position' is configured to Consideration has been given to allowing the recording button to be pressed only when the head is set in the operating position, and only forward recording is possible.

(Hereafter, extra white) Embodiments of the present invention shown in the drawings will be described below.

FIG. 1 shows an external configuration diagram of the tape recorder of the present invention,
A mechanism component (2!) is provided on the device main body il+ so that it can be freely pulled out in the direction of arrow A or pushed in the direction of arrow A. (The size has a cassette mounting part (4) including a pair of reel spindles i31+3) and a built-in tape drive mechanism.

The mechanism components (on the front of the external case are a forward play button 5 which is pressed in the direction of arrow A', a reverse play button 16), a record button (7), and an eject button (8). arrangement d
At the same time, a forward/reverse fast forward button (9) which is operated from the neutral position in the left/right direction is arranged at right angles to the direction of the arrow X.

Figure 2 shows the mechanism component ■ and the device body (the drawer structure of the sword), α [ is the box-shaped movable frame forming the mechanism component (m), and (11) is the device body (the one that is attached to the This is a fixed plate.

A pair of parallel guide slots r, +zai and 0313 are formed on the opposing surfaces of the movable frame OC and the fixed plate 11), respectively. A pair of guide shafts, 14) aj and 05αゐ are fixed respectively, and the guide elongated hole (guide shaft 04 of the movable frame OC) 16 of the fixed plate 0υ is inserted into and assembled, In addition, the guide shafts ao qo of the fixed plate all fit into and engage with each other in the guide elongated hole of the movable frame α (one noodle).

Therefore, the movable frame q (1) of the mechanism component linearly slides on the fixed plate (111) by means of these guide slots and guide shafts.

The stop is the guide shaft 419 on the fixing plate (11) on the device main body side.
A discharge coil spring whose one end is connected to the bending piece αη of the movable frame GO+ of the mechanism component and whose other end is connected to the bent piece αη of the movable frame Qα of the mechanism component.
The guide roller 11 is arranged so as to expand and contract approximately at right angles along a guide roller 11 rotatably supported by the guide roller 11 . Therefore, when the mechanism component iz) is pushed in the direction of arrow A, the coil spring (16) expands along the guide roller α9. A mechanical lock pin device is fixed on the lower surface of the movable frame αα of the mechanism component, and a fixed plate attached to the main body of the device; And a wide hole part (21b) that spreads from this narrow hole part through a symmetrical inclined surface.
An approximately inverted triangular control hole (2D) is formed, and a locking lever (n has a radius 1231) that locks the mechanical lock pin ■ when the mechanism component movable frame 0Q is pushed onto the device main body fixing plate 11. It is rotatably provided as a fulcrum.

(241 is a spring that biases the locking lever counterclockwise, (to) is a stopper of the locking bar.

(to) is a cushion rubber fixed to the bent part of the fixed base, and when the mechanism component l≦) is pulled out, the extension piece (support) of the movable frame a0 comes into contact with it to reduce the impact. It is something. The target is a power switch disposed on the fixed plate α1).

Therefore, the mechanism component f is configured such that its movable frame 00) can be freely pulled out into the main body of the device by being guided by the guide shaft and guide pin on the fixed plate 111, and the pushed state of the mechanism component f is It is locked with the lock lever ■.

Next, the internal structure of the mechanism structure 12) will be explained.

Figure 3 shows the mechanism component 1) in its drawn out state, with a movable frame! Various mechanisms, which will be explained below, are provided for the Nyasi funeral placed in the container 1c.

Gl) is a flywheel provided coaxially with the capstan, and the flywheel '31+ is rotated via a belt by a motor whose forward and reverse rotation directions can be switched. The capstan ■: A pair of reel spindles; 3] +
3) and the cassette (351) installed in the cassette mounting part '4). At this time, the cassette part is connected to the chassis (T
The position is determined by a pair of positioning pins provided on the top.

A gear is provided coaxially with the capstan, and a pair of left and right reel spindles (3) is provided with a reel stand gear.

A pair of intermediate gears (4α) are engaged with the capstan gear shaft on the left and right sides, and when the capstan gear shaft rotates clockwise (positive direction), the left intermediate gear (support) is connected to the left reel base gear. (3) is engaged between the capstan gear and the capstan gear.
When the capstan gear (η) rotates counterclockwise (reverse direction), the right intermediate gear (401) is meshed between the right reel base gear (to) and the capstan gear (9), that is, in the center. It is configured to selectively transmit rotational force to the reel stand gear 38) or (2) in relation to the rotational direction of the disposed capstan gear (2).

(41) is a detection lever provided slidably in the direction of the arrow along the guide shaft (G), and is biased by a spring (43) so that the detection lever (41a) always protrudes into the cassette mounting section. When the cassette is installed, it slides slightly backward against the spring.The detection lever (
4. The engagement piece (41b) is integrally formed. (
The pinch lever is rotatably provided on the shaft on the chassis ■ and is equipped with a pinch roller (461) rotatably around the support shaft Aη. is formed, and the actuating lever lock has an actuating surface (48a) that comes into contact with and separates from a control pin mounted on the fixed plate aυ, and an engaging piece (41b) of the detection lever (41) that engages or separates from the actuating surface (48a). A protruding piece (48b) is formed.

[Co., Ltd.] is a erroneous recording prevention lever that detects the presence or absence of an erroneous erasure prevention claw formed on the cassette. 1<-, the erroneous recording prevention lever (7) is pivoted on a shaft 311 on the chassis and is supported by a spring @ It is constantly urged to rotate clockwise). And the erroneous recording prevention lever ω has the operating surface (50a) that comes into contact with and separates from the control pin (49), the detection piece (sob) of the erroneous erasure prevention claw, and the operation movement of the recording/sl- similar to the operating Lenoy machine. A blocking piece (50c) for blocking is formed.

ω is the recording/e operated by the recording button (7),
The recording lever has a pull-out link pin (53a), a first control hole (53b), and a second control hole (53) that are clearly visible in FIG.
c) and a blocking protrusion (53a) are formed, and are biased toward the non-operating position by a spring.

(to) is when the recording lever (to) is pressed against the spring @ to the operating position;
53a), the recording lock is pivotally supported on a shaft on the chassis and biased to rotate counterclockwise by a spring 6η. . The first control hole' (5+b) of the recording lever ω is provided with the blocking piece (5+b) of the erroneous recording prevention lever group.
50c) is inserted, and this blocking piece (50c) is inserted into the first control hole (50c) when the erroneous recording prevention lever ■ is in contact with the control pin (491) (when the mechanism component is in the pulled out position).
The first control hole (53
b) Left step part (L): This is the guide hole between the left and right step parts (L) and (R) when it is detected that the cassette has a claw for preventing accidental erasure when the mechanism component is in the pushing position. (1
There are four of them facing each other.

Further, a protrusion pin ω provided on the lower surface of the erasing lever ■ shown in FIG. 3 is inserted into the second control hole (53c) of the recording lever □□□ through an inclined hole in the chassis.

The eraser lever (1) has an inclined guide hole formed at its tip, and the inclined guide hole engages with a positioning pin to move forward or backward in an oblique direction;
An erasing head is attached to the top surface with screws.

In Figs. 3 and 8, the ejection lever is operated by the ejection button (8), and the ejection lever is set in the non-operating position by means of a spring (surface) with a guide elongated hole engaged with the shaft shaft of the chassis. energized in the direction.

The ejection lever (B41) faces the bent piece (22a) of the locking lever when the mechanism component (2!) is pushed into the device body and locked with the locking lever (2), At this time, when the discharge lever bar is pressed, the locking lever can be rotated against the spring t24.

The gutter is an extensible coil spring interposed between the pinch lever (40) and the movable frame plate, and the pinch lever is always urged to rotate clockwise by the elastic force of the coil spring (681). (Nichi-Tei used the above-mentioned coil spring (pinch lever (4) to control the position of the target).
4 and a regulating shaft provided on the movable frame, respectively. (2) is a head support lever on which the magnetic head for forward direction play and the magnetic head for reverse direction play are respectively installed via the mounting base 1'7415, and the head support lever made by Lenoy Co., Ltd. is shown in Fig. 4. The magnetic head for playing in the forward direction is on the right side of the capstan ■, and the magnetic head for playing in the reverse direction is on the capstan.
A tape guide (□□□) is provided on the side of each magnetic head.

The head support lever T) is configured symmetrically around an imaginary line connecting the capstan and the shaft stop, and in the intermediate position shown in FIG. The magnetic head for forward play (7) is set to the operating position, and by swinging a full stroke counterclockwise or clockwise about the shaft 761 through this intermediate position, the forward playing magnetic head (7 is connected to the tape in the cassette or to bring the reverse playing magnetic head (1) into an operating position in which it contacts the tape in the cassette.

The head support lever m) is a mechanism structure +2)
It is forcibly held at the intermediate position by the holding lever □ which responds to the pulling operation from the main body t1).

That is, the holding lever (2) is rotatably provided in a ring on the chassis, and when the holding pin at one end is regulated by the narrow hole (21a) of the fixing plate αυ (211), the other end is closed. The head support lever (manufactured by Co., Ltd.) is maintained at an intermediate position through the circular protrusion (71a) that is assembled with the fork portion (71a).

FIG. 4 shows a state in which the mechanism component (≦) is pushed into the device body (1), and at this time, the holding pin (81) at one end of the holding lever 4 is attached to the wide hole part (21b) of the control hole CB.
) is allowed to rotate significantly in the left and right direction.
The head support lever σB swings a full stroke in the counterclockwise direction, and the magnetic head (2) for playing in the forward direction is set at the operating position.

Next, a mechanism for controlling the head support lever will be explained with reference to FIGS. 5, 6, and 7.

The transmission gear (F!3) is a transmission gear installed coaxially with the shaft 1 of the Head Support Lever Co., Ltd. (F! , This gear part (an arc-shaped control hole □□□ is formed in a substantially concentric relationship with the circle. The projecting pin (71b) of the head support lever shaft) is fitted into the arc-shaped control hole (c). The projecting pin (711) and the spring hook of the transmission gear are connected to the part (8
3a) A tension spring ((g)) is passed between the two.

Therefore, as shown in Fig. 15, the transmission gear (Yuno gear part)
When the machine (goods) is located on the right side of the imaginary line connecting the capstan ■ and the axis σe, the protrusion pin (71b) is located at the left corner of the arc-shaped control hole and is pulled by the spring f86). The head support lever (manufactured by Co., Ltd.) uses a shaft (■) as a fulcrum, and a spring (■) resists the rotational force in the counterclockwise direction.

Furthermore, there is a capstan gear (
), and after instantaneously meshing with the capstan gear (9) and rotating by a predetermined angle in relation to the rotational direction of the capstan, it is set to a non-meshing state with the capstan gear (9). Ru. The predetermined angle is determined by the arcuate control hole.

When the head support lever m) is rotated to the position shown in Fig. 5 and the magnetic head for forward direction play is in the operating position, the direction of rotation of the motor is set to forward rotation, that is, the capstan (2) is rotated clockwise. The motor selector switch (not shown) is switched so that the head support lever ff1l rotates in the fifth direction.
When the magnetic head 1 for playing in the reverse direction is in the operating position, the motor rotates in the opposite direction, that is, the capstan area rotates counterclockwise. It is configured so that a changeover switch (r shown in the figure) can be changed over.

FIG. 6 shows a mechanism for instantaneously meshing the transmission gear (the gutter) with the capstan gear.

The leopard is a forward playback lever that is pressed and operated by a forward playback button (5), and a guide elongated hole engages with a positioning pin on the chassis, and is biased toward the non-operating position by a spring (2).

(Denoted at 901 is a reverse playback lever that is pressed and operated by a reverse playback button (6), and a positioning pin on the chassis and a guiding elongated hole 1) are engaged with each other and urged toward a non-operating position by a spring ω.

The forward playback lever and the reverse playback lever include:
Trigger pieces (87a) and (90a) for rotating the transmission gear □ clockwise or counterclockwise.
are formed respectively, and when the gear part (b) of the transmission gear (b) is in the non-meshing position on the right side as shown in Figure 6, it is pressed by the trigger piece (90a) of the reverse regeneration lever ((). A trigger receiving pin (ssb) is formed, and the trigger piece (87a) of the reverse regeneration lever is
A trigger receiving pin (83c) is formed which is pressed by the trigger pin (83c).

The can is a protective lever that prevents the forward playback lever 2 and the reverse playback lever 2 from being pressed at the same time, and the protection lever 1°C is rotatably provided on the chassis with a shaft The left and right ends face the tips of the playback levers (η).

Tatsumi is a protective lever that prevents the reverse playback lever ■ and recording lever ■ from being pressed at the same time.
□□ is also rotatably provided by a shaft on the chassis, and its left and right ends are opposed to the tip of the reverse playback lever (■) and the bent part (53e) of the bar group.

In FIG. 6 and FIG. 7, (capital) is an automatic reversing operation lever that is operated in the same direction as the pressing operation direction of the playback lever by a plunger (not shown) that operates when the end of tape running is detected; The automatic reversing operation lever (equipment) has a trigger receiving pin (83b) (83) for the transmission gear (transmission).
A trigger part (97a) is formed to press c).

As shown in Fig. 6, the intermediate gear (401) is provided on the swinging arm (2) with the capstan (2) as a fulcrum, and each intermediate gear (79'40) is constantly meshed with the capstan (79) and the capstan gear (401). When the intermediate gear receives a rotational force in the rotational direction of (capital), the swinging arm example swings left and right, and the swinging range is such that the pin (g) comes into contact with the left and right sides of the through hole α (g) of the steering wheel. It is now regulated by

Next, the forward/reverse fast forward operation mechanism shown in FIG. 8 will be explained.

(lOl) is a forward/reverse fast-forward operation lever that is operated in the left-right direction from the neutral position by the forward/reverse fast-forward button (9) shown in FIG. 1, and is provided on the chassis so as to be slidable in the left-right direction. A bent piece (102) is formed in the center of the forward/reverse fast-forward operation lever (101), and this bent piece (102) has a through hole (t) formed in the rear end of the control lever (tOa).
o! Ia) is loosely fitted, and a through hole (losb) formed at one end of the control lever (tOa) is loosely fitted to the pinch roller support shaft f471 of the pinch lever +441.

(104) and (tos) are a pair of lock levers that are independently and symmetrically supported on the shafts (106) and (107) of the chassis, respectively.
5) have lock holes (104a) each having a lock portion.
)Oosa) are formed, and each opposite end (to
tb) (105b) are interlockably connected by a combination of a through hole and a protruding piece. And each lock lever (10
4) A tension spring (10g) is connected between the projecting pieces (104 (!
09) (110) is formed, and the operation lever (1
01) is in the neutral position, each lock pin (109)
(110) is a pair of lock levers (104) (106)
are located in the lock holes (104a) (105&) of
1Ot) to the right, the lock pin on the right (n
o) is locked to the lock part of the lock hole of the right side opening hole t<-(105), and the operation/seal (101)
The locking pin (109) on the left side is locked into the locking portion of the locking hole on the left side opening (104) when the locking pin (109) is operated to the left from the neutral position.

In addition, a circular protrusion (1tt) is formed at one end of t<-(101) when performing a fast forward operation in reverse to the above, and the direction number of the operation ratio (1Ot) changes from the neutral position to the left and right (1 deviation force). When operated, the relay lever (112) is pivoted (tta)
Relay it so that it rotates with /< -(11
The circular protrusion (111) on the fork portion (112a) of 2)
Even if they are combined).

7. Time for rest lever (112)! i + i linked t
<-(tts) is slid against the spring (114), and the tip (t18a) of the interlocking tNJ-(us) is opposed to one end of the recording head. The first guide hole (115) of the interlocking t4- (11B) is a positioning pin! %il+ko is combined.

As shown in FIG. 8, the pair of left and right lock levers (10
4) and (105) have ejection levers on the left and right ends.
protrusion (64a) and upward regeneration lever leopard protrusion (87)
b) A release piece (104c) that receives the lock release force (shown with a chain line) and a protrusion piece (90) of the reverse regeneration lever.
b) A release piece (IQ5c) that receives the lock release force (shown by a chain line) is formed respectively.One of the lock levers (104) has a release pin (97a) planted in the sub-automatic reversing operation lever. ) that receives the force of the release piece (XO
4a) is formed.

As shown in Fig. 9, the head support lever (manufactured by Co., Ltd.) is equipped with a blocking protrusion (53(1)) opposite to the blocking protrusion (53(1)) on the bar when the recording operation is performed when the magnetic head (?31) for playing in the reverse direction is in the operating position. A protrusion (71c) is formed.

In addition, as shown in Figure 4, for the power switch
When pushed upward, a pinch roller (manufactured by Co., Ltd.) comes into contact with the capstan □ and operates at the same time, so that it is closed by the tip of the bar.

The present invention is configured as described above, and its operation will be explained below.

1) Attaching the cassette The cassette is attached with the mechanism shown in FIG. 1 being pulled out from the main body of the device in the direction of the arrow.

In this state, as shown in Fig. 3, the mechanism structure +21
This is a state in which the movable frame α [slides toward the front on the fixed plate 111 of the device main body (1), and in this state, move the cassette 351 shown by the dashed line to the cassette mounting portion 14 along the positioning pins. ), the detection piece (41a) is pressed at the rear of the cassette (to), and the detection lever (411) slides slightly backward against the spring (43). By sliding, the engaging piece (41b) disengages from the actuating lever (double protruding piece (48b)).Therefore, the pinch lever (4 and 4)
il-(to) is regulated only by the control pin (49) on the fixed plate fill.

2) Pushing the mechanism component into the device body Now, move the temporary cassette (to) into the cassette mounting portion (4) of mechanism component 12+ without inserting the mechanism component (into the device body). When pushed in, the detection lever
Since it is in the position where it is engaged with the protrusion (48b) of No. 1,
The operating surface (48a) of the operating lever (4gl) is attached to the fixed plate 111.
Even if it is separated from the control pin on the upper control lever (u!
Since the position of J is restricted, the pinch lever (44
1 does not rotate and the pinch rail (461 does not come into pressure contact with the capstan 2), and its end does not close the power switch due to the restraint of the operating lever F48.

On the other hand, after installing the cassette (to) in the cassette mounting part (4) of the mechanism component, when this mechanism component ■ is pushed into the device body (1), the detection lever (4°C is the operating lever Since it is separated from the gate, as shown in FIG. When the pinch lever roller is pressed against the capstan device, the power switch device can be closed by the end of the operating lever (a).

At this time, the operating surface (50a) of the erroneous recording prevention lever is also separated from the control pin fa, so the erroneous recording prevention lever ω is rotated clockwise by the spring group and the detection piece (50b) is activated to detect the cassette (to). It is possible to detect the presence or absence of an erasure prevention claw.

When the mechanism component ■ is in the pulled out position as shown in Figure 3, the holding pin (8υ) of the holding lever σ9 is connected to the control hole (2
) is forcibly held in the neutral position by the narrow hole part (2ia) of the head support lever (2), so that the head support lever (2) is also held in the intermediate position. The magnetic head is in a non-operating position outside the cassette.

Now, if the rotation direction of the capstan ■ is clockwise (positive direction), the transmission gear is in a state where its gear part (circle) is deflected to the right as shown in Figure 5. 1KII and the protrusion pin (71b) of the head support lever (2), the head support lever (m) is in a state in which a counterclockwise force is withstood by the tension of the tension spring (2).

The intermediate position in the direction of the head support lever is held against the counterclockwise rotational force of this tension spring (861).

Therefore, from the drawn out state shown in Figure 3, the movable frame is fixed on the fixed plate +
When the upper part 111 is pushed backward, the holding pin +811 of the holding lever flower escapes from the narrow hole part (21a) of the control hole (21), so that the holding lever flower becomes free in its first position.

When the holding lever a9 becomes free, the head supporting lever is rotated counterclockwise as shown in Fig. 4 by the spring biasing the head supporting lever in the counterclockwise direction; The playing magnetic head enters into the cassette and comes into contact with the tape, and is in the operating position, and the -traditional playing magnetic head is in the largely inactive position.

On the other hand, the intermediate gear ■ (4ω) is converted by the clockwise rotation of the capstan gear via the swinging arm as shown in Figure 6, and the rotational force is transmitted to the left reel stand gear ball. be done.

When the mechanism component) is pushed into the main body of the device (inside the sword), it is locked by locking the mechanical lock pin into the locking lever ■.

Therefore, the tape is driven at a constant speed in the left direction (forward direction) in the figure by the clockwise rotation of the capstan (2), and the forward direction playback state can be achieved by the forward direction playing magnetic head (2).

3) Manual reversal operation In order to reverse the tape from the above-mentioned forward playback state to obtain a reverse playback state, press the reverse playback lever in Fig. 6.
η is suppressed.

By operating this regeneration lever j (the trigger piece (9)
0a) meshes with the trigger receiving pin (83b) of transmission gear (2) against the tongue gear, and in response to the clockwise rotational force of the capstan gear, a counterclockwise rotational force is applied to transmission gear (&1). Therefore, as the transmission gear rotates, the spring catch part (83a) moves rightward from the position shown in FIG. 6 while extending the tension spring field.

Then, when the gear part/circle of the transmission gear 4 becomes disengaged from the capstan gear, the tension spring
The projecting pin (71b) is pulled into the right corner of the arc-shaped control hole (851) by a tensile force of 1 mm, resulting in the state shown in FIG. 7.

Therefore, in the state shown in FIG.
11)) Receives a clockwise rotational force depending on the direction of the tension spring can connected to. Therefore, the head support lever 171) rotates as shown in FIG.
At the same time, the magnetic head for playing in the forward direction η is largely shifted to the non-operating position, and at the same time, the magnetic head for playing in the backward direction j? 3 is Kasetsu)
(The ninth head support lever (71)
In conjunction with the rotation to the position shown in the figure, the motor changeover switch is changed, and the direction of rotation of the motor is reversed, causing the capstan to rotate counterclockwise and the intermediate gear 4ω to rotate. By switching and transmitting rotational force to the right reel stand gear (2), the tape can be driven at a constant speed in the right direction (reverse direction), and can be switched to a reverse play state by the reverse play magnetic head.

Next, in order to reverse the tape again from the reverse playback state shown in FIG. 7 to obtain the forward playback state, press the forward playback button (5).
All you have to do is press .

In this case, the IJ car piece (of the forward direction regeneration lever (a))
87a) comes into contact with the trigger receiving pin (83c) of the transmission gear (1), and a clockwise rotation force gives - to the transmission gear.

At this time, the capstan gear is rotating counterclockwise, so in response to this rotational force, the transmission gear instantly rotates by a predetermined angle, and as described above, the tensile force of the tension spring and fan is applied. In response, the head support lever f711 can be rotated to the position shown in FIG.

Along with this, the motor changeover switch is changed and the capstan is rotated clockwise, thereby making it possible to resume tape playback in the forward direction.

During the manual reversing operation, the forward playback lever and the reverse playback lever are prevented from being operated simultaneously by a protective lever fence.

4) Automatic reversing operation When the end of tape running is detected mechanically or electrically in the tape forward playback state shown in Figures 4 and 6, the automatic reversing operation lever (one section of each reproducing lever) It is operated in the same direction as the glaze operation direction, and some of the birds are (97a)
comes into contact with the trigger receiving pin (83b) of the transmission gear, and a counterclockwise rotational force is applied to the transmission gear.

Therefore, by instantaneously meshing the gear portion of this transmission gear (F!3) with the capstan gear return, it is possible to obtain the reverse playback state in the same manner as in the case of the manual reversal operation described above.

5) Forward/reverse fast-forward operation When the tape is played in the forward direction shown in Figures 4 and 8, forward/reverse fast-forward operation - If the bar (101) is operated and moved from the neutral position shown in the figure to the right, as shown in Figure 10. As shown, the lock pin (110) on the right side of the operating lever (101) is inserted into the lock hole (t) in the multi-open lever (105) on the right side.
OSa) is locked in the lock section. This control lever (
By moving the control lever (101) from the neutral position to the right, a through hole (+
The control lever (tOa) into which the control lever (tOa) is loosely fitted is linked and pulls the pinch roller support shaft (4η) of the pinch lever (441), thereby separating the pinch roller (461) from the capstan ■. At this time, the control lever (lOl) A relay lever (112) assembled with a circular protrusion (111) formed on the right end
) rotates counterclockwise, the interlocking lever (■3) moves rearward via the middle bar (112), and the recording lock lever 5 is rotated clockwise by the interlocking lever (l13). By moving the motor, a switch (not shown) that increases the rotational speed of the motor is closed, and the tape can be run in the forward direction at high speed.

On the other hand, when the forward/reverse fast-forward operating lever (+01) is operated and moved to the left from the neutral position while the tape is being played in the reverse direction, the lock pin (10) on the left side of the operating lever (1 (+1)
9) is locked in the lock portion of the lock hole (to4a) in the left lock lever (104).

At the same time, the pinch roller (461) is separated from the capstan (2), and at the same time, the motor rotation speed increase switch is closed, thereby making it possible to run the tape in the opposite direction at high speed.

6) Canceling the forward/reverse fast-forward operation state In the above-mentioned forward high-speed state or reverse high-speed state, you can release it by operating the forward playback lever or the reverse playback lever (co). Projection piece (8
7b') rotates the left lock lever (104) in the unlocking direction against the spring (108), and rotates the right lock lever (105) ζ in the unlocking direction in conjunction with this. The other protruding piece (90b) rotates the right lock lever (1OS) in the unlocking direction against the spring (ROS), and also rotates the left lock lever (104) in the unlocking direction. Rotate to.

Therefore, when the tape is running at high speed and the forward/reverse fast-forward operation is being performed, in order to cancel this operation, it is necessary to return the fast-forward operation lever to the middle position by operating either one of the playback levers. This makes it possible to immediately return to the forward playback operation state or the reverse playback operation state.

In this case, if you operate the forward playback lever auxiliary during forward fast forward operation, the forward playback state will be immediately obtained, and if you operate the reverse playback lever η, the fast forward operation lever (101
) is released, the manual reversal operation state described above is established, and a reverse playback state is obtained.

If you operate the forward playback lever or the reverse playback lever (during reverse fast-forwarding), operating the former will bring you into the forward playback state in the manual reversal state, and operating the latter will immediately bring you into the reverse playback state. is obtained.

Also, when the tape has finished running in the forward/reverse fast forward mode, the automatic reversing operation lever (the castle will slide), but the force f of the automatic reversing operation lever (release pin (97a) on the left side of the lock lever ( 104) in the unlocking direction, the fast-forward operating state can be canceled and the playback operating state in the forward or reverse direction can be automatically returned.

7) Recording operation As shown in Figure 3, when the mechanical pentagonal crosspiece is in the pulled out position, the erroneous recording prevention lever mark is regulated by the control pin (49), so the first control hole of the recording lever ω is The right step portion (R) faces the blocking piece (50c) of the erroneous recording prevention lever [Co., Ltd.].

Therefore, when manual pressing force is applied to the recording button (7), the right step (R) of the recording lever arm comes into contact with the blocking piece (50c) of the erroneous recording prevention lever, preventing the pressing operation. . If further pressing force is applied to this recording button (7), the pressing force will act as a pushing force against the mechanism structure 1, the shadow movable frame 1, and the recording lever housing). Since the movable frame (10) can be slid backwards against the fixed plate, the mechanism component (2) can be pushed into the device body (1) and can be moved in the forward or reverse direction. Set to play state.

Next, a case will be described in which the recording button (7) is pressed in the forward playback state to enter the recording state.

In the forward direction playback state, the head support lever swings as shown in FIG. Ll whose movement is not blocked.

On the other hand, when the power set has a claw for preventing erroneous erasure, the blocking piece (50c) of the erroneous recording prevention lever ω faces the guide hole (b) of the recording lever ①.

Therefore, when the recording button (7) is pressed in this state, the operation movement of the recording lever (■) is permitted, and the second control hole (53c) moves the protrusion pin of the Radre lever group to the inclined hole (pA) of the chassis. Press along.

This allows the erase head lever to slide forward in a diagonal direction and bring the erase head 10 into an operative position in contact with the tape within the cassette.

It goes without saying that the recording/playback changeover switch is switched to the recording sub-side terminal in conjunction with the operation movement of the recording lever M. As a result, a recording state in the forward direction can be obtained.

When the tape is being played in the reverse direction, as shown in Figure 9,
This is prevented by the reverse swinging of the head support lever σ1).
The protrusion (71c) is the recording lever (arrogant blocking protrusion (53d))
Since the recording button (7) is opposite to the recording button (7), it is impossible to operate the recording button (7).

In fast-forwarding state A of the tape, the recording lock lever ■ is rotating clockwise as shown in FIG.
31 is prevented from moving, and as a result, the recording button (7) cannot be operated.

In the recording state, the bent part (53e) of the recording lever in Figure 6 rotates the retention lever (%) counterclockwise, so it prevents the operation movement of the playback lever 1°C in the reverse direction. As a result, the reverse Ij direction playback button 6) cannot be operated.

8) Pulling out operation of the mechanism component When the ejection/\- column is operated against the spring ((material)) in the state shown in Fig. 8, the tip of the lever moves the chain lever against the spring self Φ. As a result, the mechanical locking mechanism that was locked to the chain-to-stop lever'n is released.The coil spring (1θ) that had been extended until now is released. Due to the contraction force, the movable frame of the mechanism structure is fixed plate j1
1) Slide the upper part forward and the mechanism component (ri) can be pulled out from the main body of the device (sword).

In connection with this pull-out operation, the reciprocating lever (pitch and erroneous recording prevention lever) cooperates with the control pin (49), and at the same time as the pinch roller (pinch roller) separates from the capstan β, the erroneous recording prevention lever Then, the power switch 29 is opened to enter a stopped state.

(Left below) As mentioned above, the device of the present invention is a tape recorder having a tape reversing drive mechanism with a unidirectional recording mechanism, which selectively operates two magnetic heads for forward play and reverse play. with a head support lever that brings it into position;
It consists of a record button that can be pressed only when the magnetic head for forward play on the head support lever is set to the operating position, so the press operation of the record button depends on the position of the head support lever. This device is useful as a recording device for a small-sized, small-space tape recorder, since it is possible to select whether or not to use a tape recorder.

[Brief explanation of the drawing]

The figures show an embodiment of the tape recorder according to the present invention, and FIG. 1 is an external perspective view with the mechanism component pulled out;
Fig. 2 is a plan view showing the relationship between the movable frame of the mechanism component and the fixed plate of the device body, Fig. 3 is a plan view of the main mechanism, and Fig. 4 is a plan view of the main mechanism in a different state from Fig. 3. , FIG. 5, FIG. 6, and FIG. 7 are plan views of the main parts to explain the control mechanism of the head support lever, FIG. 8 is a plan view to explain the forward/reverse fast-forward operation mechanism, and FIG. FIG. 10 is a plan view of the main parts for explaining the various blocking structures, and FIG. 10 is a plan view of the operating state of the forward/reverse fast-forward operation means. (1)...Equipment body, (2)...Mechanism component, (4)...Cassette mounting section, (5)...Forward playback button, (6)...Reverse playback button , (7)...Record button, (8)...Eject button, (9)...Forward/reverse fast forward button, 0
Q...Movable frame, Qη...Fixed plate, Q2(c)', α
Pier 03'...Guide slot, α4Q→', 090υ'...
・Guide shaft, wing...mechanical lock pin, P29...control hole, wing...power switch, (A)...capstan, (to)...cassette, (A)...capstan Gear, (to) (to)... Reel stand gear, (to) master...
Intermediate gear, 0υ...detection lever, (4B)...detection piece, (41b)...engaging piece, ■...pinch lever,
)...Pinch roller, 0η...Pinch roller support shaft, (Incorporated)...Pinch roller actuation lever, ha...Control pin, Country...Repani to prevent erroneous recording □゛, (Incorporated)・・・
Recording lever, Zeng... Recording lock lake -1 (to)...
・Erase head 112...Erase head, -...
Ejection lever, ■... Head support lever, (c)...
To the magnetic field for playing in the forward direction, 7 C, (c)...Magnetic head for playing in the reverse direction, (70...swing shaft, wing...holding lever, 61)...holding pin, (c) ...Transmission gear, (Foundation)...Gear part, Can...Circular control hole, (C)...
・Tension spring, ■...Forward play lever, (A)
...Reverse direction playback lever, (g?a) (m)...Trigger piece, (&3b) C8 and 3c)...Trigger receiving pin, (g)...Protection lever for simultaneous operation, (I) )...Automatic reversing operation lever, (101)...Forward/reverse fast forwarding operation lever, (103)...Control lever, (+04) (10
5) "Lock lever 1 (+09) (11...lock pin. Figure 1 Figure 4 Figure 5 [---] l -h--22 1 1ζ Figure 7 Figure 9 Figure 5j (1

Claims (1)

[Claims] (1) A tape recorder having a tape reversing drive mechanism with a unidirectional recording mechanism, comprising a head support lever for selectively bringing each of the magnetic heads for forward play and reverse play to an operating position, and the head support. A recording device for a tape recorder consisting of a recording button that can be pressed only when a magnetic head for playing in the forward direction on a lever is set to the operating position.