JP3383410B2 - Auto reverse type tape recorder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
-Regarding the precoder. 2. Description of the Related Art Conventionally, a motor is rotated forward and backward to rotate the motor.
Forward play mode, reverse play mode, fast forward
Mode switching such as high-speed driving mode such as
There is an auto-reverse type tape recorder configured as described above.
FIG. 21 shows an example of the configuration of a conventional tape recorder. This
FIG. 21 shows the forward play mode.
Shows the view from the back side of the surface on which the cassette is placed.
ing. [0003] In FIG. 21, reference numeral 101 denotes a tape recorder.
102 is a take-up reel, 103 is a supply reel,
104 is a capstan in the forward direction, 105 is a river
The capstan in the forward direction, 106 is the pin in the forward direction.
The pinch roller 107 is a pinch roller in the reverse direction.
You. [0004] 108 and 109 are rotationally driven, respectively.
Force is applied to the take-up reel 102 and the supply reel 103 side.
The intermediate idler for transmitting each is shown. [0005] 111 is predetermined on the upper and lower surfaces of the left and right ends respectively
This is a slide lever with a cam surface
Advance and retreat of the operating lever 113 provided on the lancer 112
Along with this, a triangle rotatably supported by the support shaft 125
Can slide left and right through the cam plate pin 114
It is configured to: Therefore, the operation lever 113
Is provided with an operating pin 126. The pinch rollers 106 and 107 rotate respectively.
This rotating lever is provided on moving levers 115 and 116.
Sliding pins 117 and 118 provided on 115 and 116
By sliding the peripheral surface of the slide lever 111,
Pressing and separating operations are performed on the capstans 104 and 105.
Will be The intermediate idlers 108 and 109 are fulcrums 121 and 1
With the operation of the rotation pins 123 and 124 around the center 22
The pins 117, 1
18 and 123 and 124 are slide levers 11
1 can be slid on the peripheral surface. Therefore, the forward play mode shown in FIG.
In the mode, the rotation supplied to the capstan 104 is
The driving force is supplied to the supply reel 102 via the intermediate idler 108.
Side and the capstan 104 has a pin
The chill roller 106 is in a pressed state. In contrast
To de-energize the plunger 112 and then reattach it.
The force is applied through the pin 114 of the triangular cam plate.
And move the slide lever 111 to the right,
The rotation driving force of the capstan 105 is the intermediate idler 1
09 and transmitted to the take-up reel 103 side.
Then, the pinch roller 107 is pressed against the capstan 105.
Then, a reverse play mode is set (not shown). By doing so, the tape can be forwarded.
Travel control in the
It becomes possible. In order to achieve such control,
The plunger 112 described above is mounted on the ride lever 111.
The plunger 11 is connected via a triangular cam plate.
Forward play shown in FIG.
Mode or reverse play mode not shown
are doing. In addition, in this configuration, the format shown in FIG.
Word play mode or reverse play (not shown)
Plunger 112 is always energized to enter mode
It is in a state where it was done. [0009] Incidentally, the above-described subordinate
In conventional tape recorders, the plunger 112
Forwarding through triangular cam plate by biasing and deenergizing
Bring to play mode or reverse play mode
But to preserve each mode
The plunger 112 should always be in a biased state
Must. Therefore, the forward play mode shown in FIG.
Mode or reverse play mode (not shown)
If you want to keep it,
Power must be maintained, resulting in power consumption
Has the disadvantage of greatly increasing the cost and is not economical.
there were. Therefore, the present invention solves such a problem.
A solution, especially for motor rotation and
Control to obtain the desired operating mode.
As well as aim without constantly energizing the plunger
Auto-reverse type that can maintain the operation mode of
This is to propose a tape recorder. [0011] According to the present invention, a module is provided.
Forward play mode and reverse play
Mode switching such as spray mode and high-speed driving mode
Auto reverse tape recorder
The large-diameter gear and the small-diameter gear
Main gear driven by the rotation of the
A) The first working part, the second working part, and the
And a first gear and a second gear meshing with the large-diameter gear.
The first switching lever that rotates and rotates coaxially with the main gear
A gear that is freely arranged and meshes with the action part and the small diameter gear
A second switching lever having the following, and the first switching lever:
And driven via the first gear
And a first cam engaged with the cam gear
A lever and a plunger for controlling the first cam lever
And the first cam engaged with the cam gear.
A second cam lever controlled by the lever, and the second cam lever;
Controlled by the lever and through the second action section
A control lever for controlling the first switching lever;
A magnetic head and a pair of pinch rollers controlled by a cam lever
Controlling the second switching lever via the
Forward play mode, reverse play mode or
It has a direction lever to select the high-speed transport mode.
It is characterized by the fact that According to the present invention, the drive motor rotates normally and reversely.
The rotation direction of the cam gear 4 accompanying the rotation and the plunger PL
The first cam lever that is driven and controlled by ON and OFF
By achieving the above-mentioned purpose by controlling
Accordingly, the control operation is as shown in FIG. That is, the stop mode is defined as an initial state.
And, from this stop mode, forward play mode
In order to obtain this, a motor driven by a drive motor (not shown)
Rotate the gear 4 counterclockwise and
Is turned off. By doing this
Thus, the forward play mode is achieved. Further, the cam gear 4 is disengaged from the stop mode.
Turn clockwise and turn on plunger PL
If so, the fast forward mode is achieved. In this case
In the middle from stop mode to fast forward mode
The plunger PL after setting the fast forward mode.
Is released. Also, when the cam gear 4 is operated from the stop mode,
Rotate in the measuring direction and turn on the plunger PL
In this state, the reverse play mode is achieved. this
The stop play mode to the reverse play mode.
During playback or after setting the reverse play mode.
And the urging state of the plunger PL is released.
You. Further, the cam gear 4 is moved from the stop mode.
Rotate clockwise and turn plunger PL off.
In this state, a rewind mode is set. The stop mode in the initial state from each operation mode
In order to change the rotation direction of the cam gear 4,
Rotate in the opposite direction of rotation to get the operating mode
And turn on the plunger PL.
The stop mode is thus obtained. Plunger P
The energized state for L is released after the stop mode is set.
You. As described above, the power accompanying the rotation of the driving motor is
Rotation of plunger 4 and on / off movement of plunger PL
By skillfully controlling the work,
The operation mode is reliably obtained. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
An embodiment of the present invention will be described. this
In the invention, as described in the section of “action”
In order to obtain a predetermined operation mode,
Rotation direction of cam gear 4 with rotation of motor and plunger
-Use the on / off operation of the PL skillfully. As shown in FIG. 20, as shown in FIGS.
Set the stop mode to the initial state
A cam gear 4 driven by a drive motor (not shown)
While rotating counterclockwise, the plunger PL
12 and 13 by turning it off.
A forward play mode is obtained. In the stop mode, the cam gear 4 is turned counterclockwise.
And turn the plunger PL on
, The fast-forward mode shown in FIGS. 14 and 15 is obtained.
Can be In this case, fast-forward from stop mode
Die before entering the mode or after setting the fast forward mode
Thus, the biased state of the plunger PL is released. In the stop mode, the cam gear 4 is turned clockwise.
And turn the plunger PL on.
Then, the reverse play mode shown in FIGS.
Is obtained. Even in this case, stop mode
On the way to reverse play mode or reverse
After setting the ray mode, the plunger PL
The energized state is released. In the stop mode, the cam gear 4 is turned clockwise.
And turn the plunger PL off.
Then, the rewind mode shown in FIGS. 18 and 19 is established.
You. FIGS. 1 and 2 show the operation modes.
In order to set the stop mode as the initial state shown,
The direction of rotation of the cam gear 4 is determined according to the operation mode.
Rotation in the opposite direction to the rotation
Stop by turning on the Langer PL
Mode is obtained. The bias on the plunger is
Canceled after Top mode is set. FIGS. 1 and 2 show the tape recorder of this embodiment.
Indicates the stop mode in which each operation mode
This is the initial state at the time of selection.
Taking is just one example. An embodiment of the tape recorder of the present invention will be described.
The configuration and operation will be described separately. First, the outline of the configuration
explain about. Note that the tape cassette
The figure is viewed from the back side with respect to the surface on which the
You. In addition, in actual parts,
There are places that are arranged in a state where
On the surface, this overlap is ignored and represented by a solid line. 1 and 2, reference numeral 1 denotes a main gear.
And a shaft 11 protruding from a mechanical chassis (not shown).
Rotatably arranged on the motor
It is driven to rotate more. This main gear 1 is a large diameter gear 1a.
And a small diameter gear 1b arranged coaxially.
The large diameter gear 1a and the small diameter gear 1b are made of felt material or the like.
Via known frictional engagement (clutch) means (not shown)
Are linked. This is great when the tape end comes
Even if the diameter gear 1a is rotationally driven by a motor,
The rotation of the supply reel 102 and the supply reel 103 stops.
This allows the small-diameter gear 1b to stop.
That's why. Reference numeral 2 denotes a first switching lever, and the shaft 11
And is rotatably arranged coaxially with the main gear 1.
The second gear always meshes with the large-diameter gear 1a of the main gear 1.
It has a first gear 2a and a second gear 2b. Also,
A third gear 2c with a slightly smaller diameter is integrated with one gear 2a.
The third gear 2c is provided with a cam to be described later.
Intermittent gear portions 48a, 48b provided on the peripheral surface of the gear 4;
The cam gear 4 is rotated by meshing. Furthermore, switching lever
2 is a lower portion of a cam provided on a lower surface side of a cam gear 4 described later.
A pin 2d serving as a first action portion engaging with the surface 4B is planted.
And the switching lever is engaged with the control lever 7 described later.
-2 from the switching lever 2 that controls the rotation position of itself
A bent portion 2e serving as a second acting portion formed by bending is arranged.
ing. The third gear 2c reduces the rotation of the main gear 1.
It is provided to rotate the cam gear 4 at a high speed,
Even if the third gear 2c also serves as the first gear 2a
good. Reference numeral 3 denotes a second switching lever, and the shaft 11
Coaxially with the main gear 1 and the first switching lever 2
The main gear 1 has a small diameter gear.
The gear 3a has a gear 3a that always meshes with the gear 1b. As shown in FIG.
As shown in FIG.
The pin 3b serving as an action portion engaging with the lever 8 is planted.
Through the pin 3b to the right of the direction lever 8.
Switching lever 3 itself with sliding in the left or right direction
Is controlled. Reference numeral 4 denotes a cam gear.
The shaft 41 protrudes from the lower surface of the mechanical chassis (not shown).
Arranged freely. This cam gear 4 has both sides
The cam upper surface 4A shown in FIG. 3 and the cam lower surface 4 shown in FIG.
B is formed, and the cam portions 42 to 45 and
A cam portion 46 and a stopper 47 are formed on the cam lower surface 4B.
Have been. The cam gear 4 has an intermittent gear on its outer periphery.
Notches 49a, 49b are formed.
ing. As will be described in detail later, the cam gear 4
Or the first switching lever with the rotation in the counterclockwise direction.
2 pin 2d, a pin 5b of a first cam lever 5 described later.
And the pin 6b of the second cam lever 6 is
For 45 and 46, pin 2d is C1-C8,
5d is B1 to B3, B5 to B7, pin 6d is A1 to A7
By moving through the relative trajectories of
The operation mode can be obtained. FIG. 3 shows a cam.
FIG. 4 is a diagram showing a cam upper surface 4A which is an upper surface of the gear 4, and FIG.
Denotes a cam lower surface 4B, which is the lower surface of the cam gear 4, for convenience of explanation.
FIG. 7 is a diagram showing a state as viewed from the upper and upper surfaces of the cam upper surface 4A.
is there. The following describes the operation modes of the tape recorder.
In this case, the description will be made assuming a state viewed from the cam upper surface 4A side. Reference numeral 5 denotes a first cam lever, not shown.
It is rotatably arranged on a shaft 51 projecting from the mechanical chassis.
And also protruded from a mechanical chassis (not shown)
The center is suspended on the shaft 52, and one end protrudes from the mechanical chassis.
The other end of the cam lever 5
5a always rotates clockwise by the spring T1.
Powered. As shown in FIG.
Provided on the cam lower surface 4B side of the cam gear 4 as described above
A pin 5b is provided to engage with the outer peripheral wall of 46. Ma
In addition, the figure is on the side substantially symmetrical with respect to the pin 5b and the shaft 51.
As shown in FIG. 1, the suction action of the plunger PL causes
To rotate the lever 5 clockwise against the spring T1.
Iron piece 5c and cam lever 5 by plunger PL
When rotated counterclockwise, a second cam lever 6 described later
5d for controlling the rotational position of the
I have. Reference numeral 6 denotes a second cam lever, not shown.
It is rotatably arranged on a shaft 61 protruding from the mechanical chassis.
The center is suspended on this shaft 61 and both
First bent portion 6 bent at the end from cam lever 6
a and a shaft 62 projecting from a mechanical chassis (not shown)
The forked spring T2 is configured to hold the
And always hold the cam lever 6 in the neutral position.
It has been done. Also, as shown in FIG.
Is a cam portion provided on the cam upper surface 4A side of the cam gear 4.
While the pin 6b engaging with 42-45 is planted,
The second fold engaging with the action portion 5d of the first cam lever 5
This control is performed by engaging a curved portion 6c with a control lever 7 described later.
Third bent portion 6d for sliding lever 7 left and right
And this direction engages a direction lever 8 described later.
An action portion 6e for sliding the bar 8 left and right is provided.
Have been killed. Reference numeral 7 denotes a control lever, as shown in FIG.
Shafts 71 and 7 protruding from a mechanical chassis (not shown)
2 enables sliding to the left and right through the slots 73 and 74
FIG. 9 shows the broken surface of the dashed line in FIG.
As shown in FIG. 10, the heads of the shafts 71 and 72 are elongated holes.
The diameter is slightly larger than the width in the short direction of 73 and 74.
Also, the position of the control lever 7 is regulated upward in FIG.
It has become. Also, the control lever 7 has
To the third bent portion 6d of the second cam lever 6 as described above.
The control lever 7 to the right or left
A first operating portion 7a and a second operating portion 7b,
Is engaged with the bent portion 2e of the switching lever 2
The third action portion 7c for controlling the rotation position of the second and fourth operations
7d is provided. Furthermore, the control lever 7
Is slid right or left by the second cam lever 6.
When moved, the movement position is changed as shown in FIG.
A strike for holding by a locking portion 75 provided on the chassis S
The upper part 7e is provided. The first to the locking portions 75
Third locking portions 75a to 75c are provided. Stopper
-Portion 7e and first to third locking portions 75a to 75c are substantially V
The V-shaped stopper portion 7e is formed in a V-shape.
Locked by the first to third locking portions 75a to 75c
Thus, the position of the control lever 7 is maintained. Locking part 75
Of the control lever 7 in the stop mode.
And the second locking portion 75b is
The third locking portion 75c is held at the right
Hold the ride position. Locking portion 75 of stopper portion 7e
Will be described. Second cam lever 6
The control lever 7 is slid right or left by
When the V-shaped tip of the stopper portion 7e is
a-75c, this tape
The V-shaped tip of the stopper portion 7e is locked by the locking portion 75a.
~ 75c to the predetermined position (V-shaped center)
Works. Due to this pull-in action, the accuracy of parts varies.
Of the movement stroke of the control lever 7 generated based on the
Fluctuation can be minimized, so the control lever 7
Operation can be stabilized. Reference numeral 8 denotes a direction lever.
As shown in the figure, it was protruded from a mechanical chassis (not shown).
The shafts 81 and 82 slide left and right through long holes 83 and 84, respectively.
Id is arranged to be possible. This direction lever 8
Is engaged with the action portion 6e of the second cam lever 6,
First fold to slide bar 8 right or left
Part 8a, the second bent part 8b, and with the sliding of the lever 8,
Selectively move the pinch rollers P1 and P2 to the capstan CP.
1, a first working pin 8c to be pressed against and separated from CP2,
The operating pin 8d and the top and bottom of FIG.
Operating chassis (not shown) slidably arranged in the direction
The head H mounted on the head is vertically moved in FIG.
1st to 3rd formed by bending to slide in
Acting portions 8e to 8g and a pin 3 of the second switching lever 3
b to control the second switching lever 3
A fourth action portion 8h formed of a substantially U-shaped groove provided,
A spring-loaded storage device arranged on a mechanical chassis (not shown)
The first for engaging the par 86 and holding the stop position
Locking portion 8i for holding the right sliding position of lever 8
Of the second locking portion 8j and the lever 8 to the left slide position.
A third locking portion 8k is provided for holding. The capstans CP1 and CP2 are shown in the drawing.
Not driven by the rotation of the motor, also shown
No flywheel is articulated. pinch
Rollers P1 and P2 are respectively attached to pinch levers (not shown).
The pinch lever is mounted
The first operation pin 8c and the second operation pin 8d of the operation lever 8
When the lever 8 slides left and right,
La P1 or P2 is selectively replaced with capstan CP1 or
It is configured to be pressed against and separated from CP2. 102 is a take-up reel, 103 is a supply reel
Show. Reference numeral 91 denotes a winding idler, which is a winding lead.
Large diameter idler gear 91a that always meshes with
Two-stage gear of small diameter idler gear 91b provided integrally with
A. Forward play mode (Fig. 1
2, 13), the gear 3a of the second switching lever 3 is large.
The take-up reel 102 meshes with the diameter idler gear 91a.
Drive in rotation. In the fast forward mode (FIGS. 14, 1)
In 5), the second gear 2b of the first switching lever 2 has a small diameter gear.
High speed take-up reel 102 by engaging with idler gear 91b
Drive in rotation. Reference numeral 92 denotes a supply idler, which is a winding lead.
Large idler gear 92a that always meshes with
Two-stage gear of a small diameter idler gear 92b provided integrally with the
A. Reverse play mode (FIG. 16,
17) Sometimes, the gear 3a of the second switching lever 3 is
The supply reel 103 is rotated by meshing with the idler gear 92a.
Move. In the rewind mode (FIGS. 18 and 19)
Means that the second gear 2b of the first switching lever 2 is a small-diameter idler.
The supply reel 103 is driven to rotate at high speed by meshing with the gear 92b.
Let it. The configuration in this example is as described above.
Then, stop the operation mode in this example.
Mode, forward play mode, fast forward mode,
The description will be made in the order of the play mode and the rewind mode. First, the stop mode shown in FIGS.
The motor (not shown) is not rotating.
Therefore, the main gear 1 is not driven to rotate. Therefore,
A of the first switching lever 2 meshing with the large-diameter gear 1a of
1, small gears of second gears 2a and 2b and main gear 1
The gear 3a of the second switching lever 3 that meshes with
And thus take-up reel 102 and
The supply reel 103 is not driven to rotate. A cam provided on the cam upper surface 4A of the cam gear 4
The fork part 42a of the rubber part 42 is countered by a forked spring T2.
The pin 6b of the second cam lever 6 urged in the
The cam gear 4 is urged in the counterclockwise direction
On the other hand, provided on the cam lower surface 4B of the cam gear 4.
The contact portion 45a of the cam portion 45 is turned clockwise by a spring T1.
Pin 5b of the first cam lever 5 urged in
The cam gear 4 is positioned. In this stop mode, the plunge
Since no current is applied to the first cam PL, the first cam
The lever 5 is biased clockwise by the spring T1 as described above.
Have been. The third gear 2c of the first switching lever 2
Is opposed to a notch 49a provided on the outer periphery of the cam gear 4.
I have. The second cam lever 6 is rotated counterclockwise by a forked spring T2.
A counterclockwise rotational force is applied. The control lever 7 is locked by its stopper 7e.
The first locking portion 75a of the portion 75
In addition, the direction lever 8 slides with the first locking portion 8i.
The toppers 86 are engaged with each other and held at the neutral position.
ing. Furthermore, a substantially U-shaped groove of the direction lever 8
Through the pin 3b engaging with the fourth action portion 8h
The exchange lever 3 has a gear 3a whose size is the size of the winding idler 91.
Large diameter idler gear 91a and supply idler 92
Holds in a state where it does not mesh with either of the idler gears 92a
Have been. The above is the stop mode. From this stop mode, forward play
The operation for shifting to the mode will be described.
Forward play mode is instructed by operating means
And a command from a microcomputer (not shown)
The main gear 1 is driven to rotate counterclockwise.
Let Plunger PL maintains the off state. Now, for the rotation of the main gear 1 in the counterclockwise direction,
The first gear 2 meshing with the large-diameter gear 1a of the main gear 1
a, the first switching lever 2 is also counterclockwise driven by the second gear 2b.
Direction rotation force is applied, and the pin 2 d
Until it comes into contact with the contact portion 46d provided on the inner periphery of the portion 46
Rotate counterclockwise. Counterclockwise of the first switching lever 2
The third gear of the first switching lever 2 during the movement in the
2c starts engaging with the intermittent gear portion 48a of the cam gear 4.
However, the rotation of the cam gear 4 is not achieved. The pin 2d of the first switching lever 2 is a cam gear.
4 abuts on the contact portion 46d provided on the inner periphery of the cam portion 46
However, the contact of the first switching lever 2 in the counterclockwise direction
When the rotation is stopped, the third switching lever 2
The cam gear 4 through the intermittent gear portion 48a by the gear 2c
Is provided with a counterclockwise rotation force. Therefore, the cam gear
4 starts rotating counterclockwise. In this state, the first cut
Of the second gear 2b of the exchange lever 2 and the take-up idler 91
It does not mesh with the diameter idler gear 91a. As the cam gear 4 rotates counterclockwise,
The second cam lever which has been in contact with the contact portion 42a of the
-6 pin 6b moves from the contact part 42a to the cam part 43 side
However, it may be moved to the contact portion 43a side of the cam portion 43, or
Alternatively, whether or not the cam portion 43 moves to the contact portion 43b side
1 cam lever 5 is moved through plunger PL via iron piece 5c.
It depends on whether it is sucked. That is, the cam gear 4 rotates counterclockwise.
Then, the contact portion 4 of the cam portion 46 provided on the cam lower surface 4B
The pin 5b of the first cam lever 5 which is in contact with the
Moving along the contact portion 46b of the
The cam lever 5 is rotated counterclockwise against the spring T1.
Can be At this time, a current is applied to the plunger PL.
If the plunger PL has been turned on,
Counterclockwise against the spring T1 of the first cam lever 5
Since the rotational position in the direction is held via the iron piece 5c,
The second cam lever 6 is turned counterclockwise by the urging force of the crotch spring T2.
When the first cam lever 5 rotates, the action portion 5d of the first cam lever 5
And the second cam lever 6 is engaged with the second bent portion of the cam lever 6.
-6 is prevented from turning counterclockwise. Therefore, plunge
When the locker PL is on, the pin of the second cam lever 6
6b is from the contact portion 42a to the contact portion 43b side of the cam portion 43.
Moving. When the plunger PL is off, the first
The pin 5b of the cam lever 5 is in contact with the contact portion 46b of the cam portion 46.
And then the cam 46 is moved by the biasing force of the spring T1.
Move along. Therefore, the first force is generated by the biasing force of the forked spring T1.
When the cam lever 6 rotates counterclockwise, the first cam
Second bending of the working portion 5d of the lever 5 and the second cam lever 6
Parts do not engage. Therefore, the plunger PL is turned off.
In the state, the pin 6b of the second cam lever 6 is
The contact portion 43a of the cam portion 43 from the contact portion 42a
Move to a side. From the stop mode to the forward play mode
Plunger PL is turned off as described above
State is maintained. Therefore, the second cam lever 6
The pin 6b is connected to the cams 42 to 44 as shown in FIG.
From position 6b (0) to position 6b (1) along trajectory A1
Moving. It moves along the contact part 43a of the cam part 43
At this time, the contact portion 43a is gradually inclined in the axial direction.
Then, the second cam lever 6 is further counter-rotated through the pin 6b.
It can be rotated in the measuring direction. For the counterclockwise rotation of the second cam lever 6
Accordingly, the control lever 7 has the first action portion 7a
The control lever 7 comes into contact with the third bent portion 6d of the lever 6 and the left
The left slide position is the control level.
The stopper 7e of the bar 7 is connected to the second locking portion 75 of the locking portion 75.
It is held by engaging with b. Sly to the left
The operated control lever 7 is firstly switched by the third action portion 7c.
The counterclockwise rotation of the exchange lever 2 is restricted. That is, the counterclockwise rotation of the cam gear 4
Accordingly, the pin 2d of the first switching lever 2 moves along the locus shown in FIG.
It moves along the C1 from the 2d (0) position.
When the first switching lever 2 is turned by the inner peripheral wall of the cam portion 46,
The rotation in the measuring direction is restricted, and the first
When the pin 2d of the switching lever 2 escapes, the pin 2d
Since it is locked to the third action portion 7c of the control lever 7,
And the counterclockwise rotation of the first switching lever 2 is 2d.
(1) Regulated by position. Therefore, in the forward play mode, the first
Gear 2b of the switching lever 2 and the winding idler 91
Does not mesh with the small diameter idler gear 91b. For the counterclockwise rotation of the second cam lever 6
Accordingly, the action portion 6e of the second cam lever 6 is moved in the direction.
Abuts on the first bent portion 8a of the lever 8 and the first bent portion 8a
8a, slide the direction lever 8 to the right.
Let Sliding position of this direction lever 8 to the right
The second engagement part 8j and the stopper 86 must be engaged.
Is held by Rightward direction lever 8
Along with the slide, a substantially U-shaped groove of the direction lever 8
Through the pin 3b engaging with the fourth action portion 8h
The exchange lever 3 rotates counterclockwise, and its gear 3a is wound.
Meshes with the large-diameter idler gear 91a of the take-off idler 91
You. Accordingly, the take-up reel 102 rotates clockwise.
You. The rightward sliding of the direction lever 8
The first working pin 8c of the direction lever 8
Moves the pinch roller P1 through a pinch lever (not shown).
Press the tape T against the capstan CP1 and move the tape T to the left
Run at a constant speed and mount on an operating chassis (not shown).
The placed head H is directed to the direction
The bar 8 is moved from the first action portion 8e to the second action portion 8f.
And slide the head H upward in FIG.
Contact As the cam gear 4 rotates counterclockwise,
Gear 48a of the third gear 2 and the third gear of the first switching lever 2.
The engagement with the gear 2c is released by the intermittent portion 49b of the cam gear 4.
Therefore, the cam gear 4 is stopped. This series of cam gear
4 rotates the first cam lever 5 in a counterclockwise direction.
The pin 5b is located at the position 5b (0) along the locus B1 shown in FIG.
And finally moves to 5b (1). In the forward play mode, the first
The pin 5b of the cam lever 5 is brought into contact with the contact portion 45 by a spring T1.
and rotate the cam gear 4 slightly counterclockwise through d.
However, the pin 6b of the second cam lever 6
The cam gear 4 functions as a topper, as shown in FIG.
The state shown by 2 and 13 is maintained. Figure through the above process
The forward play modes shown in 12 and 13 are obtained. Stop from this forward play mode
The operation for shifting to the mode will be described.
When the stop mode is instructed by the operating means,
The motor (not shown) moves forward
The main gear 1
Is rotated clockwise. Plunger PL is current
Is applied to turn on. Now, as the main gear 1 rotates clockwise,
Gear 2 meshing with the large-diameter gear 1a of the main gear 1
a, the first switching lever 2 is also clockwise driven by the second gear 2b.
And a pin 2d is connected to the cam portion of the cam gear 4.
When it comes into contact with the contact portion 46e provided on the inner circumference of
Rotate in the measuring direction. During the clockwise movement of the first switching lever 2
, The third gear 2c of the first switching lever 2 is
A begins to mesh with the intermittent gear portion 48a of the cam gear 4,
Cannot be driven to rotate. Of the first switching lever 2
Pin 2d is provided on the inner periphery of cam portion 46 of cam gear 4.
The first switching lever comes into contact with the contact portion 46e.
-2 is prevented from rotating clockwise, the first turn
The third gear 2c of the exchange lever 2 is connected via a gear portion 48a.
Thus, the cam gear 4 is provided with a clockwise rotational force. Therefore, the cam gear 4 starts rotating clockwise.
Confuse. With the clockwise rotation of the cam gear 4, the cam portion 44
The pin 6b of the second cam lever 6 that has been in contact with
From 44, it comes into contact with the contact portion 43c of the cam portion 43. This
The second cam lever 6 rotates clockwise by the contact portion 43c.
Let me do. The clockwise rotation of the second cam lever 6
As a result, the control lever 7 is moved through the second action portion 7b.
Sliding rightward by the third bent portion 6d of the second cam lever 6
The slide position to the right is
Stopper 7e engages with first locking portion 75a of locking portion 75
Will be retained by For the counterclockwise rotation of the second cam lever 6
Accordingly, the action portion 6e of the second cam lever 6 is moved to the second bent portion.
8b, slide the direction lever 8 to the left.
Let Sliding position of this direction lever 8 to the left
The first engagement part 8i and the stopper 86 must be engaged.
Is held by Slide the direction lever 8 to the left
With the 4th work of the substantially U-shaped groove of the direction lever 8
Second switching lever via a pin 3b engaging with the
3 rotates clockwise, the gear 3a and the winding idler
The meshing state of the large-diameter idler gear 91a is released.
You. Therefore, the clockwise rotation of the take-up reel 102
The rotation stops. Slide left direction of direction lever 8
With the ride, the first operation pin of the direction lever 8
8c is a pinch roller P via a pinch lever (not shown).
Release the pressure contact state between Capstan 1 and capstan CP1 and tape
Stop the constant speed running in the left direction of the arrow T and
The head H placed on the working chassis that does not
From the second action portion 8f of the direction lever 8
1 Move to the action section 8e and slide the head H downward in FIG.
And separated from the tape T. As the cam gear 4 rotates clockwise, the cam
The intermittent gear portion 48a of the gear 4 and the third
The engagement with the gear 2c is released by the intermittent portion 49a of the cam gear 4.
Therefore, the cam gear 4 is stopped. This series of mussels
The clockwise rotation of the first cam lever 5 causes the first cam lever 5 to rotate.
Pin 5b is located at position 5b (1) along locus B2 shown in FIG.
And finally located at 5b (0). That is, the plunger PL is turned on.
Although the first cam lever 5 is turned counterclockwise by the spring T1
The cam gear 4 is urged in the
The iron piece 5c is separated from the plunger PL body
Suction action by plunger PL because it is separated
Does not reach the first cam lever 5. Turn of cam gear 4
With the rotation, the pin 5b of the first cam lever 5 is moved to the cam portion 46.
The first cam lever 5 to the spring T1 by the contact portion 46b of
When turned counterclockwise in opposition, the iron piece 5c
Brought into the suction area of the jar PL, and the first cam lever
5 is held counterclockwise against the spring T1.
It is. When the cam gear 4 further rotates, the first gear
The pin 5b of the lever 5 is the stopper 47 of the cam gear 4.
Abut. This contact causes the cam gear 4 to move as described above.
And the third gear of the first switching lever 2
Is disengaged at the notch portion 49a of the cam gear 4,
The clockwise rotation caused by the inertia of the
The pin 5b of the first cam lever 5
Can be securely positioned at the contact portion 46a of the arm 46.
You. Similarly, the stop mode is changed from the other operation modes.
The same is done when doing so. Plunger P
L is turned off after the rotation of the cam gear 4 is stopped. As the cam gear 4 rotates clockwise, the second
The pin 6b of the cam lever 6 along the locus A2 shown in FIG.
Move from the 6b (1) position to finally 6b (0)
To position. The pin 2d of the first switching lever 2 is
From 2d (1) to 2d (0) along the locus C2 shown in
Moving. Through the above process, the stop model shown in FIGS.
Code is obtained. Shift from stop mode to fast forward mode
Operation will be described.
When the rewind mode is specified, a microcomputer (not shown)
, A motor (not shown) is driven to rotate and the main gear 1
Is rotated counterclockwise. Plunger PL
State. From the stop mode described above, the forward play
The difference from the operation to shift to
-PL is turned off (forward play mode)
Or just turn off (fast forward mode)
The details are omitted, but only the differences are explained below.
I will tell. When the plunger PL is on, the second
The pin 6b of the cam lever 6 is pressed by the biasing force of the forked spring T2.
Move from the contact portion 42a to the contact portion 43b side of the cam portion 43
You. The contact portion 43b is provided substantially concentrically with the shaft 41.
Therefore, the second cam lever 6 does not rotate. Follow
The control lever 7, the direction lever 8 and the second
Is held at the stop mode position. As the cam gear 4 rotates counterclockwise, the first
The pin 2d of the switching lever 2 of FIG.
Move from 2d (0) to 2d (2). While moving
Clockwise rotation of the first switching lever 2 by the
The control lever 7 is then stopped.
Pin 2d is held in the control lever 7
Counterclockwise rotation of the main gear 1
First gear meshing with the large-diameter gear 1a of the main gear 1
2a, the first switching lever 2 is also counterclockwise by the second gear 2b
It turns in the measuring direction. The first switching lever 2 is turned counterclockwise.
The movement is made between the second gear 2b of the first switching lever 2 and the winding arm.
Until the small diameter idler gear 91b of the idler 91 meshes
Done. Biting of the second gear 2b and the small idler gear 91b
After joining, the small diameter idler gear 91b and the large diameter idler gear 9
1a, the take-up reel 102 is rotated clockwise at high speed.
Invert. As the cam gear 4 rotates counterclockwise,
Of the first switching lever 2 and the intermittent gear portion 48a of the
The engagement with the third gear 2c is released at the notch 49b of the cam gear 4.
The cam gear 4 is stopped. This series of cams
The counterclockwise rotation of the gear 4 causes the first cam lever
The 5th pin 5b moves along the locus B3 shown in FIG.
And finally located at 5b (1). Also,
The pin 6b of the second cam lever 6 extends along A3 shown in FIG.
Moved from 6b (0) and finally located at 6b (2)
I do. Through the above process, the fast-forward mode shown in FIGS.
Is obtained. The mode is shifted from the fast-forward mode to the stop mode.
The operation to be performed will be described.
When the stop mode is instructed, a myco
When the motor (not shown)
The main gear 1 is rotated clockwise by reverse rotation.
Let it. The plunger PL is turned on when current is applied.
Has become. Now, as the main gear 1 rotates clockwise,
Gear 2 meshing with the large-diameter gear 1a of the main gear 1
a, the first switching lever 2 is also clockwise driven by the second gear 2b.
And a pin 2d is connected to the cam portion of the cam gear 4.
When it comes into contact with the contact portion 46e provided on the inner circumference of
Rotate in the measuring direction. Clockwise movement of the first switching lever 2
During the movement, the second gear 2b of the first switching lever 2
Biting of the take-up idler 91 with the small-diameter idler gear 91b
Is released, the take-up reel 102 rotates at a high speed.
Stop. The pin 2d of the first switching lever 2 is a cam gear.
4 abuts against the contact portion 46e of the cam portion 46.
The first switching lever 2 is prevented from rotating clockwise.
And this time by the third gear 2c of the first switching lever 2.
The cam gear 4 rotates clockwise through the intermittent gear portion 48a.
Power is given. Therefore, the cam gear 4 starts rotating clockwise.
Confuse. With the clockwise rotation of the cam gear 4, the cam portion 44
The pin 6b of the second cam lever 6 that has been in contact with
Move along the trajectory A4 shown in FIG.
Move to (0). Note that the pin 5b of the first cam lever 5 is
Along the locus B2 shown in FIG. 4 from 5b (1) to 5b (0).
Move with. The pin 2d of the first switching lever 2 is
Along the locus C4 shown in FIG. 4 from 2d (2) to 2d (0).
Move with. Through the above process, the stop shown in FIGS.
Mode is obtained. The other main operations are the same as those described above.
Operation from word play mode to stop mode
The stop mode shown in FIGS.
Is obtained. From the stop mode to the reverse play mode
The operation to shift to
When the reverse play mode is indicated by the step,
Motor (not shown)
To rotate the main gear 1 clockwise. plan
The jar PL is turned on. Now, as the main gear 1 rotates clockwise,
Gear 2 meshing with the large-diameter gear 1a of the main gear 1
a, the first switching lever 2 is also clockwise driven by the second gear 2b.
And a pin 2d is connected to the cam portion of the cam gear 4.
When it comes into contact with the contact part 46f provided on the inner circumference of 46
Rotate in the measuring direction. During the movement of the first switching lever 2 in the clockwise direction
, The third gear 2c of the first switching lever 2 is
A begins to mesh with the intermittent gear portion 48b of the cam gear 4,
Cannot be driven to rotate. Of the first switching lever 2
The pin 2d contacts the contact portion 46f of the cam portion 46 of the cam gear 4.
The first switching lever 2 in the clockwise direction
When the rotation is stopped, the third switching lever 2
The cam gear 4 via the intermittent gear portion 48b by the gear 2c
Is provided with a clockwise rotational force. Therefore, the cam gear 4 starts rotating clockwise.
Confuse. In this state, the second gear 2b of the first switching lever 2
Meshes with the small-diameter idler gear 92b of the supply idler 92.
Not matched. As the cam gear 4 rotates clockwise, the cam
The second cam lever which has been in contact with the contact portion 42a of the portion 42
6 moves from the contact portion 42a to the cam portion 45 side.
Move to the contact portion 45a side of the cam portion 45, or
Whether the first cam lever 5 moves to the side of the part 45b
Whether or not it is sucked into the plunger PL via 5c
According to That is, the cam gear 4 rotates clockwise.
Then, the contact portion 46 of the cam portion 46 provided on the cam lower surface 4B
a pin 5b of the first cam lever 5 which is in contact with
Since it moves along the contact portion 46c of the portion 46, the first
The lever 5 is rotated counterclockwise against the spring T1.
It is. At this time, current is applied to the plunger PL and
If the plunger is in the
Counterclockwise against the spring T1 of the first cam lever 5
Since the turning position in the direction is held via the iron piece 5c,
The second cam lever 6 is turned counterclockwise by the urging force of the spring T2.
When rotating, the action portion 5d of the first cam lever 5 is
Engagement with the second bent portion 6c of the cam lever 6 causes the second cam
The bar 6 is prevented from rotating counterclockwise. Therefore, the plan
When the jar PL is on, the pin of the second cam lever 6
6b moves from the contact portion 42a to the contact portion 45a side of the cam 45.
Moving. When the plunger PL is off, the first
Pin 5b of the cam lever 5 is in contact with the contact portion 46c of the cam portion 46.
And then the cam 46 is moved by the biasing force of the spring T1.
Move along. Therefore, the first force is generated by the biasing force of the forked spring T1.
When the cam lever 6 rotates counterclockwise, the first cam
Second bending of the working portion 5d of the lever 5 and the second cam lever 6
The portion 6c does not engage. Therefore, plunger PL is turned off.
In the retracted state, the pin 6b of the second cam lever 6 is
The contact portion of the cam portion 46 from the contact portion 42a by the urging force of the spring T2.
Move to the 46b side. From stop mode to reverse play mode
Plunger PL is turned on as described above
State. Therefore, the pin 6b of the second cam lever 6 is
As a result of passing through the contact portion 45a side of the cam 45, FIG.
Along the locus A5 shown in FIG.
Is moved to the side of the contact portion 45a. The contact portion 45a gradually separates from the axial direction.
And the pin 6b of the second cam lever 6
Rotates clockwise when moving along the contact portion 45a
Let me do. As the second cam lever 6 rotates clockwise,
The control lever 7 has its second operating portion 7b
The control lever 7 contacts the third bent portion 6d of the bar 6 and the control lever 7 moves to the right.
The slide position to the right is the control lever
7 stops at the third locking portion 75c of the locking portion 75.
It is held by engaging. The control lever 7 slid to the right is
Of the first switching lever 2 in the clockwise direction by the fourth action portion 7d.
Regulate movement. That is, when the cam gear 4 rotates clockwise,
Accordingly, the pin 2d of the first switching lever 2 has a locus C shown in FIG.
Move along 2 from 2d (0) to 2d (3). Transfer
During movement, the first switching lever 2 is rotated clockwise by the cam portion 46.
Rotation is restricted, and after the rotation of the cam gear 4 is stopped,
Is the fourth operating portion 7d of the control lever 7 and the first switching lever 2
The clockwise rotation of is regulated. Therefore, in the reverse play mode, the first
The small size of the second gear 2b of the switching lever 2 and the supply idler 92
It does not mesh with the diameter idler gear 92b. As the second cam lever 6 rotates clockwise,
The action part 6e of the second cam lever 6 is directed
The lever 8 comes into contact with the second bent portion 8b, and the second bent portion 8
Slide the direction lever 8 to the left through b
You. A leftward slide of the direction lever 8
The id position is such that the third locking portion 8k and the stopper 86 are engaged.
It is kept by doing. Left of direction lever 8
Along with the slide, the direction lever 8 is almost U-shaped
Via the pin 3b engaging with the fourth action portion 8h of the
Switch lever 3 rotates clockwise, and its gear 3a is
Meshes with the large idler gear 91a of the supply idler 92
You. Therefore, the supply reel 103 moves counterclockwise.
Rotate. To slide the direction lever 8 to the left
Accordingly, the second action pin 8d of the direction lever 8 is
The pinch roller P2 is moved via the pinch lever (not shown).
Press the tape T against the pusher CP2 and move the tape T at a constant speed in the right direction of the arrow.
While running, and placed on the operation chassis (not shown).
Head H through the pin 85
8 from the first action portion 8e to the third action portion 8g,
The slide H is moved upward in FIG.
You. With the clockwise rotation of the cam gear 4, the cam
The intermittent gear portion 48b of the gear 4 and the third
The engagement with the gear 2c is released by the notch 49b of the cam gear 4.
Therefore, the cam gear 4 is stopped. This series of mussels
The clockwise rotation of the first cam lever 5 causes the first cam lever 5 to rotate.
The pin 5b is moved from 5b (0) along a locus B5 shown in FIG.
After moving, it is finally located at 5b (2). The above process
Through the reverse play mode shown in FIGS.
It is. The stop play mode is switched from the reverse play mode.
The operation for shifting to the mode will be described.
When stop mode is instructed by operation means,
The motor (not shown) reverses
The main gear 1 is rotated in reverse rotation to the play mode.
Rotate clockwise. Plunger PL is on
State. Now, with respect to the rotation of the main gear 1 in the counterclockwise direction,
The first gear 2 meshing with the large-diameter gear 1a of the main gear 1
a, the first switching lever 2 is also counterclockwise driven by the second gear 2b.
Direction rotation force is applied, and the pin 2 d
Rotates counterclockwise until it contacts the contact part 46g of the part 46
I do. During the movement of the first switching lever 2 in the counterclockwise direction,
And the third gear 2c of the first switching lever 2 is a cam gear 4
Starts to mesh with the gear portion 48b of the
It doesn't work. The pin 2d of the first switching lever 2 is a cam gear.
4 comes into contact with the contact portion 46g of the cam portion 46, and by this contact,
Counterclockwise rotation of the first switching lever 2 is prevented.
And this time by the third gear 2c of the first switching lever 2.
The cam gear 4 rotates counterclockwise through the intermittent gear portion 48b.
Rolling force is given. Therefore, the cam gear 4 rotates counterclockwise.
start. As the cam gear 4 rotates counterclockwise, the cam
The pin 6b of the second cam lever 6 which has been in contact with 44 is shown in FIG.
From 6b (3) along the locus A6 shown in FIG.
It contacts the contact portion 45c. The contact portion 45c allows the second cam lever
6 is rotated counterclockwise. This second cam lever
With the clockwise rotation of -6, the control lever 7
1 working portion 7a is connected to the third bent portion 6d of the second cam lever 6
The control lever 7 is slid to the left,
The stopper position 7e of the control lever 7 is
Engagement with the first locking portion 75a of the stop portion 75 allows the
Be held. For the counterclockwise rotation of the second cam lever 6
Accordingly, the action portion 6e of the second cam lever 6 is moved in the direction.
Abuts on the first bent portion 8a of the lever 8 and the first bent portion 8a
8a, slide the direction lever 8 to the right.
Let Sliding position of this direction lever 8 to the right
The first engagement part 8i and the stopper 86 must be engaged.
Is held by On the right slide of the direction lever 8,
Accordingly, the fourth operation of the substantially U-shaped groove of the direction lever 8 is performed.
The second switching lever 3 via the pin 3b engaged with the portion 8h
Is rotated counterclockwise, and the gear 3a and the supply idler 9 are rotated.
The meshing state of the second large-diameter idler gear 92a is released.
Therefore, the rotation of the supply reel 103 in the counterclockwise direction stops.
You. Slide the direction lever 8 to the right
As a result, the second action pin 8d of the direction lever 8 is
The pinch roller P2 and the pinch roller P2 are
Release the pressure contact state with the capstan CP2 and release the arrow
Stops constant speed running in the right direction, and not shown
The head H mounted on the operating chassis is connected via the pin 85
First action from the third action portion 8g of the direction lever 8
Section 8e, and slide the head H downward in FIG.
And separate it from the tape T. As the cam gear 4 rotates counterclockwise,
Of the first switching lever 2 and the intermittent gear portion 48b of the first gear 2
The engagement with the third gear is released by the notch 49a of the cam gear 4.
Therefore, the cam gear 4 is stopped. The series of rotations of the cam gear 4 in the counterclockwise direction
Accordingly, the pin 5b of the first cam lever 5 is shown in FIG.
After moving from 5b (2) along the locus B6, finally
b (0). The pin 6b of the second cam lever 6 is
Moving from 6b (4) along the locus A6 shown in FIG.
b (0). Also, a pin of the first switching lever 2
2b moves from 2d (3) along the locus C6 shown in FIG.
And is located at 2d (0). Through the above process,
The stop mode shown in FIG. Shift from stop mode to rewind mode
Operation will be described.
When the rewind mode is specified, a microcomputer (not shown)
, A motor (not shown) is driven to rotate and the main gear 1
Is rotated clockwise. Plunger PL is off
State. Reverse play from the stop mode described above
What is different from the mode transition operation is the plunger
PL is turned on (reverse play mode)
Only in the rewind state (rewind mode).
Although omitted, only different points will be described below. When the plunger PL is in the off state,
The pin 6b of the second cam lever 6 is a bifurcated spring T2.
The contact portion 42a to the contact portion 45b of the cam portion 45 with the urging force of
Move to the side. The contact portion 45b is substantially concentric with the shaft 41
, So that the second cam lever 6
It is not rotated by the part 45b. Therefore, the control lever
7, direction lever 8 and second switching lever 3
Is held in the stop mode position. With the clockwise rotation of the cam gear 4, the first
The pin 2d of the switching lever 2 moves along the locus C7 shown in FIG.
Move from 2d (0) to 2d (4). Cam while moving
The clockwise rotation of the first switching lever 2 is controlled by the portion 46.
It is regulated, but after that the control lever 7 is in stop mode
Pin 2d is attached to the control lever 7
Therefore, it is not regulated, and the rotation of the main gear 1 in the clockwise direction
Gear 2 meshing with the large-diameter gear 1a of the main gear 1
a, the first switching lever 2 is also clockwise driven by the second gear 2b.
Rotate in the direction. The clockwise rotation of the first switching lever 2
Are the second gear 2b of the first switching lever 2 and the supply
Until the small diameter idler gear 92b of the
It is. After the second gear 2b meshes with the small diameter idler gear 92b
Are small diameter idler gear 92b, large diameter idler gear 92a
The supply reel 103 is rotated counterclockwise at high speed
Let As the cam gear 4 rotates clockwise, the cam
The intermittent gear portion 48b of the gear 4 and the third
The engagement with the gear 2c is released by the notch 49b of the cam gear 4.
Therefore, the cam gear 4 is stopped. This series of rotations of the cam gear 4 in the clockwise direction
Therefore, the pin 5b of the first cam lever 5 is connected to the rail shown in FIG.
Moves from 5b (0) along trace B7 and finally 5b
Located at (2). Also, the pin 6 of the second cam lever 6
b moves from 6b (0) along A7 shown in FIG.
Eventually, it is located at 6b (4). Through the above process, Figure 1
The rewind mode shown in FIGS. The mode is shifted from the rewind mode to the stop mode.
The operation to be performed will be described.
When the stop mode is instructed, a myco
Motor (not shown) in the rewind mode
The main gear 1 is rotated counterclockwise by reverse rotation.
Move. The plunger PL is turned on when current is applied
It has become. Now, for the rotation of the main gear 1 in the counterclockwise direction,
The first gear 2 meshing with the large-diameter gear 1a of the main gear 1
a, the first switching lever 2 is also counterclockwise driven by the second gear 2b.
Direction rotation force is applied, and the pin 2 d
Until it comes into contact with the contact portion 46g provided on the inner periphery of the portion 46
Rotate counterclockwise. During the clockwise movement of the first switching lever 2
And the second gear 2b of the first switching lever 2 and the winding
The engagement of the idler 92 with the small-diameter idler gear 92b is released.
High-speed rotation of the take-up reel 102 is stopped.
You. A pin 2d of the first switching lever 2 is a cam gear.
4 comes into contact with the contact portion 46g of the cam portion 46, and by this contact,
Counterclockwise rotation of the first switching lever 2 is prevented.
And this time by the third gear 2c of the first switching lever 2.
The cam gear 4 rotates clockwise through the intermittent gear portion 48a.
Power is given. Therefore, the cam gear 4 starts rotating clockwise.
Confuse. With the clockwise rotation of the cam gear 4, the cam portion 44
The pin 6b of the second cam lever 6 that has been in contact with
Follow the course opposite to the locus A7 shown, from 6b (4)
Move to 6b (0). Note that the pin 5b of the first cam lever 5 is
5b (2) to 5b (0) along the locus B6 shown in FIG.
Move with. The pin 2d of the first switching lever 2 is
Along the locus C8 shown in FIG. 4 from 2d (4) to 2d (0).
Move with. The other main operation is as described in the forward
Operation is almost the same as when switching from play mode to stop mode.
Although omitted because it is one, the stop mode shown in FIGS.
can get. The mode switching described above is an example.
And continuously from play mode to stop mode
Mode switching to shift to high-speed feed mode via
Such changes can be made as appropriate. According to the present invention, the forward rotation of the drive motor,
By skillfully controlling the reversal, one cam gear and
First cam lever driven and controlled by plunger
Control to obtain a predetermined operating mode.
And even if the plunger is not constantly energized,
Auto-reverse to maintain the desired operation mode
Type tape recorder can be provided,
Each lever can be controlled with a pin and a plunger. That
According to the present invention, an auto-reverse tape recorder
The number of parts for mode switching can be reduced.
Thus, the structure can be simple and inexpensive.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a stop mode of an embodiment. FIG. 2 is a diagram illustrating a stop mode of the embodiment. FIG. 3 is a diagram illustrating an upper surface of a cam gear according to the embodiment. FIG. 4 is a diagram showing a lower surface of the cam gear of the embodiment. FIG. 5 is a view showing a first switching lever of the embodiment. FIG. 6 is a view showing a second switching lever of the embodiment. FIG. 7 is a view showing a first cam lever of the embodiment. FIG. 8 is a view showing a second cam lever of the embodiment. FIG. 9 is a diagram showing a control lever of the embodiment. FIG. 10 is a diagram illustrating a retracting operation of the control lever according to the embodiment. FIG. 11 is a view showing a direction lever of the embodiment. FIG. 12 is a diagram showing a forward play mode of the embodiment. FIG. 13 is a diagram showing a forward play mode of the embodiment. FIG. 14 is a diagram showing a fast-forward mode of the embodiment. FIG. 15 is a diagram illustrating a fast-forward mode of the embodiment. FIG. 16 is a diagram showing a reverse play mode of the embodiment. FIG. 17 is a diagram showing a reverse play mode of the embodiment. FIG. 18 is a diagram illustrating a rewind mode of the embodiment. FIG. 19 is a diagram illustrating a rewind mode of the embodiment. FIG. 20 is a diagram for explaining operation mode switching of the embodiment. FIG. 21 is a diagram showing a forward play mode of a conventional tape recorder. [Description of Signs] 1 Main gear 2 First switching lever 3 Second switching lever gear section 4 Cam gear 5 First cam lever 6 Second cam lever 7 Control lever 8 Direction levers 42 to 46 Cam section 47 Stoppers 48a, 48b Intermittent Gears 49a, 49b Notch 102 Take-up reel 103 Supply reel PL Plunger

Claims (1)

(57) [Claim 1] In an auto-reverse type tape recorder in which mode switching such as forward play mode, reverse play mode, and high-speed running mode is performed by forward and reverse rotation of a motor, A main gear driven by rotation of the motor, wherein a first gear is rotatably disposed coaxially with the main gear;
A first switching lever having a second gear, a first gear meshing with the large diameter gear, and a second gear; a first switching lever rotatably disposed coaxially with the main gear and meshing with the working part and the small diameter gear; A second switching lever having a gear that engages with the first switching lever; a cam gear that is engaged with the first operating portion of the first switching lever and that is driven via the first gear; A cam lever; a plunger that controls the first cam lever; a second cam lever that engages with the cam gear and is controlled by the first cam lever; and a second action that is controlled by the second cam lever. A control lever for controlling the first switching lever via a unit, and a second switching lever controlled by the second cam lever via a magnetic head, a pair of pinch rollers and an action unit. And a direction lever for selecting a forward play mode, a reverse play mode, or a high-speed transport mode.